Bump for release

closes pterodactyl/panel#2121

.gitignore

@@ -45,3 +45,5 @@ test_*/
 # Keep all gitkeep files (This needs to stay at the bottom)
 !.gitkeep
 debug
+data/.states.json
+.DS_Store

.travis.yml

@@ -1,22 +1,24 @@
+os: linux
+dist: xenial
 language: go
 
 go:
-- 1.9.x
+- 1.13.x
+
+go_import_path: "github.com/pterodactyl/wings"
 
 services:
-  - docker
+- docker
 
 install:
 - mkdir -p $GOPATH/bin
 
 # Install used tools
-- go get github.com/golang/dep/cmd/dep
 - go get github.com/mitchellh/gox
 - go get github.com/haya14busa/goverage
 - go get github.com/schrej/godacov
 
-# Install project dependencies with dep
-- dep ensure
+- go mod download
 
 script:
 - make cross-build

CHANGELOG.md

@@ -0,0 +1,23 @@
+# Changelog
+
+## v1.0.0-beta.3
+### Fixed
+* Daemon will no longer crash if someone requests a websocket for a deleted server.
+* Temporary directories are now created properly if missing during the server installation process.
+
+### Added
+* Added support for using Amazon S3 as a backup location for archives.
+
+### Changed
+* Memory overhead for containers is now 5/10/15% higher than the passed limit to account for JVM heap and prevent crashing.
+
+## v1.0.0-alpha.2
+### Added
+* Ability to run an installation process for a server and notify the panel when completed.
+* Output from the installation process is now emitted over the server console for administrative users to view.
+
+### Fixed
+* Fixed bugs caused when unmarshaling data into a struct with default values.
+* Timezone is properly set in containers by using the `TZ=` environment variable rather than mounting timezone data into the filesystem.
+* Server data directly is now properly created when running the install process.
+* Time drift caused in the socket JWT is now handled in a better manner and less likely to unexpectedly error out.

Dockerfile

@@ -0,0 +1,14 @@
+# ----------------------------------
+# Pterodactyl Panel Dockerfile
+# ----------------------------------
+
+FROM golang:1.14-alpine
+COPY . /go/wings/
+WORKDIR /go/wings/
+RUN apk add --no-cache upx \
+ && go build -ldflags="-s -w" \
+ && upx --brute wings
+
+FROM alpine:latest
+COPY --from=0 /go/wings/wings /usr/bin/
+CMD ["wings","--config", "/var/lib/pterodactyl/config.yml"]

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 Jakob Schrettenbrunner <dev@schrej.net>
+Copyright (c) 2019 Dane Everitt <dane@daneeveritt.com>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,28 +1,12 @@
-BINARY = "build/wings"
-OSARCHLIST = "darwin/386 darwin/amd64 linux/386 linux/amd64 linux/arm linux/arm64 windows/386 windows/amd64"
+build:
+	GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -gcflags "all=-trimpath=/Users/dane/Sites/development/code" -o build/wings_linux_amd64 -v wings.go
 
-all: $(BINARY)
+compress:
+	upx --brute build/wings_*
 
-$(BINARY):
-	go build -o $(BINARY)
+cross-build: clean build compress
 
-cross-build:
-	gox -osarch $(OSARCHLIST) -output "build/{{.Dir}}_{{.OS}}_{{.Arch}}"
+clean:
+	rm -rf build/wings_*
 
-.PHONY: install
-install:
-	go install
-
-test:
-	go test `go list ./... | grep -v "/vendor/"`
-
-coverage:
-	goverage -coverprofile=coverage.out ./...
-	go tool cover -html=coverage.out
-
-dependencies:
-	glide install
-
-install-tools:
-	go get -u github.com/mitchellh/gox
-	go get -u github.com/haya14busa/goverage
+.PHONY: all build compress clean

api/api.go

@@ -4,16 +4,16 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"github.com/apex/log"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/config"
-	"go.uber.org/zap"
 	"io/ioutil"
 	"net/http"
 	"strings"
 	"time"
 )
 
-// Initalizes the requester instance.
+// Initializes the requester instance.
 func NewRequester() *PanelRequest {
 	return &PanelRequest{
 		Response: nil,
@@ -32,7 +32,7 @@ func (r *PanelRequest) GetClient() *http.Client {
 func (r *PanelRequest) SetHeaders(req *http.Request) *http.Request {
 	req.Header.Set("Accept", "application/vnd.pterodactyl.v1+json")
 	req.Header.Set("Content-Type", "application/json")
-	req.Header.Set("Authorization", "Bearer "+config.Get().AuthenticationToken)
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s.%s", config.Get().AuthenticationTokenId, config.Get().AuthenticationToken))
 
 	return req
 }
@@ -45,6 +45,26 @@ func (r *PanelRequest) GetEndpoint(endpoint string) string {
 	)
 }
 
+// Logs the request into the debug log with all of the important request bits.
+// The authorization key will be cleaned up before being output.
+func (r *PanelRequest) logDebug(req *http.Request) {
+	headers := make(map[string][]string)
+	for k, v := range req.Header {
+		if k != "Authorization" || len(v) == 0 {
+			headers[k] = v
+			continue
+		}
+
+		headers[k] = []string{v[0][0:15] + "(redacted)"}
+	}
+
+	log.WithFields(log.Fields{
+		"method": req.Method,
+		"endpoint": req.URL.String(),
+		"headers": headers,
+	}).Debug("making request to external HTTP endpoint")
+}
+
 func (r *PanelRequest) Get(url string) (*http.Response, error) {
 	c := r.GetClient()
 
@@ -55,7 +75,7 @@ func (r *PanelRequest) Get(url string) (*http.Response, error) {
 		return nil, err
 	}
 
-	zap.S().Debugw("GET request to endpoint", zap.String("endpoint", r.GetEndpoint(url)), zap.Any("headers", req.Header))
+	r.logDebug(req)
 
 	return c.Do(req)
 }
@@ -70,7 +90,7 @@ func (r *PanelRequest) Post(url string, data []byte) (*http.Response, error) {
 		return nil, err
 	}
 
-	zap.S().Debugw("POST request to endpoint", zap.String("endpoint", r.GetEndpoint(url)), zap.Any("headers", req.Header))
+	r.logDebug(req)
 
 	return c.Do(req)
 }
@@ -110,6 +130,12 @@ func (r *PanelRequest) HttpResponseCode() int {
 	return r.Response.StatusCode
 }
 
+func IsRequestError(err error) bool {
+	_, ok := err.(*RequestError)
+
+	return ok
+}
+
 type RequestError struct {
 	Code   string `json:"code"`
 	Status string `json:"status"`
@@ -117,10 +143,14 @@ type RequestError struct {
 }
 
 // Returns the error response in a string form that can be more easily consumed.
-func (re *RequestError) String() string {
+func (re *RequestError) Error() string {
 	return fmt.Sprintf("%s: %s (HTTP/%s)", re.Code, re.Detail, re.Status)
 }
 
+func (re *RequestError) String() string {
+	return re.Error()
+}
+
 type RequestErrorBag struct {
 	Errors []RequestError `json:"errors"`
 }

api/backup_endpoints.go

@@ -0,0 +1,35 @@
+package api
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/pkg/errors"
+)
+
+type BackupRequest struct {
+	Checksum string `json:"checksum"`
+	Size     int64  `json:"size"`
+	Successful bool `json:"successful"`
+}
+
+// Notifies the panel that a specific backup has been completed and is now
+// available for a user to view and download.
+func (r *PanelRequest) SendBackupStatus(backup string, data BackupRequest) (*RequestError, error) {
+	b, err := json.Marshal(data)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	resp, err := r.Post(fmt.Sprintf("/backups/%s", backup), b)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+	if r.HasError() {
+		return r.Error(), nil
+	}
+
+	return nil, nil
+}

api/server_endpoints.go

@@ -41,6 +41,41 @@ type ProcessConfiguration struct {
 	ConfigurationFiles []parser.ConfigurationFile `json:"configs"`
 }
 
+// Defines installation script information for a server process. This is used when
+// a server is installed for the first time, and when a server is marked for re-installation.
+type InstallationScript struct {
+	ContainerImage string `json:"container_image"`
+	Entrypoint     string `json:"entrypoint"`
+	Script         string `json:"script"`
+}
+
+// GetAllServerConfigurations fetches configurations for all servers assigned to this node.
+func (r *PanelRequest) GetAllServerConfigurations() (map[string]*ServerConfigurationResponse, *RequestError, error) {
+	resp, err := r.Get("/servers")
+	if err != nil {
+		return nil, nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+
+	if r.HasError() {
+		return nil, r.Error(), nil
+	}
+
+	b, _ := r.ReadBody()
+	res := map[string]*ServerConfigurationResponse{}
+	if len(b) == 2 {
+		return res, nil, nil
+	}
+
+	if err := json.Unmarshal(b, &res); err != nil {
+		return nil, nil, errors.WithStack(err)
+	}
+
+	return res, nil, nil
+}
+
 // Fetches the server configuration and returns the struct for it.
 func (r *PanelRequest) GetServerConfiguration(uuid string) (*ServerConfigurationResponse, *RequestError, error) {
 	resp, err := r.Get(fmt.Sprintf("/servers/%s", uuid))
@@ -64,3 +99,107 @@ func (r *PanelRequest) GetServerConfiguration(uuid string) (*ServerConfiguration
 
 	return res, nil, nil
 }
+
+// Fetches installation information for the server process.
+func (r *PanelRequest) GetInstallationScript(uuid string) (InstallationScript, *RequestError, error) {
+	res := InstallationScript{}
+
+	resp, err := r.Get(fmt.Sprintf("/servers/%s/install", uuid))
+	if err != nil {
+		return res, nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+
+	if r.HasError() {
+		return res, r.Error(), nil
+	}
+
+	b, _ := r.ReadBody()
+
+	if err := json.Unmarshal(b, &res); err != nil {
+		return res, nil, errors.WithStack(err)
+	}
+
+	return res, nil, nil
+}
+
+type installRequest struct {
+	Successful bool `json:"successful"`
+}
+
+// Marks a server as being installed successfully or unsuccessfully on the panel.
+func (r *PanelRequest) SendInstallationStatus(uuid string, successful bool) (*RequestError, error) {
+	b, err := json.Marshal(installRequest{Successful: successful})
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	resp, err := r.Post(fmt.Sprintf("/servers/%s/install", uuid), b)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+	if r.HasError() {
+		return r.Error(), nil
+	}
+
+	return nil, nil
+}
+
+type archiveRequest struct {
+	Successful bool `json:"successful"`
+}
+
+func (r *PanelRequest) SendArchiveStatus(uuid string, successful bool) (*RequestError, error) {
+	b, err := json.Marshal(archiveRequest{Successful: successful})
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	resp, err := r.Post(fmt.Sprintf("/servers/%s/archive", uuid), b)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+	if r.HasError() {
+		return r.Error(), nil
+	}
+
+	return nil, nil
+}
+
+func (r *PanelRequest) SendTransferFailure(uuid string) (*RequestError, error) {
+	resp, err := r.Get(fmt.Sprintf("/servers/%s/transfer/failure", uuid))
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+	if r.HasError() {
+		return r.Error(), nil
+	}
+
+	return nil, nil
+}
+
+func (r *PanelRequest) SendTransferSuccess(uuid string) (*RequestError, error) {
+	resp, err := r.Get(fmt.Sprintf("/servers/%s/transfer/success", uuid))
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer resp.Body.Close()
+
+	r.Response = resp
+	if r.HasError() {
+		return r.Error(), nil
+	}
+
+	return nil, nil
+}

api/sftp_endpoints.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/sftp-server"
+	"go.uber.org/zap"
 )
 
 func (r *PanelRequest) ValidateSftpCredentials(request sftp_server.AuthenticationRequest) (*sftp_server.AuthenticationResponse, error) {
@@ -21,11 +22,16 @@ func (r *PanelRequest) ValidateSftpCredentials(request sftp_server.Authenticatio
 	r.Response = resp
 
 	if r.HasError() {
-		if r.HttpResponseCode() == 403 {
-			return nil, sftp_server.InvalidCredentialsError{}
+		if r.HttpResponseCode() >= 400 && r.HttpResponseCode() < 500 {
+			zap.S().Debugw("failed to validate server credentials for SFTP", zap.String("error", r.Error().String()))
+
+			return nil, new(sftp_server.InvalidCredentialsError)
 		}
 
-		return nil, errors.WithStack(errors.New(r.Error().String()))
+		rerr := errors.New(r.Error().String())
+		zap.S().Warnw("error validating SFTP credentials", zap.Error(rerr))
+
+		return nil, rerr
 	}
 
 	response := new(sftp_server.AuthenticationResponse)

cmd/config_finder.go

@@ -0,0 +1,60 @@
+package cmd
+
+import (
+	"github.com/pterodactyl/wings/config"
+	"os"
+	"path/filepath"
+)
+
+// We've gone through a couple of iterations of where the configuration is stored. This
+// helpful little function will look through the three areas it might have ended up, and
+// return it.
+//
+// We only run this if the configuration flag for the instance is not actually passed in
+// via the command line. Once found, the configuration is moved into the expected default
+// location. Only errors are returned from this function, you can safely assume that after
+// running this the configuration can be found in the correct default location.
+func RelocateConfiguration() error {
+	var match string
+	check := []string{
+		config.DefaultLocation,
+		"/var/lib/pterodactyl/config.yml",
+		"/etc/wings/config.yml",
+	}
+
+	// Loop over all of the configuration paths, and return which one we found, if
+	// any.
+	for _, p := range check {
+		if s, err := os.Stat(p); err != nil {
+			if !os.IsNotExist(err) {
+				return err
+			}
+		} else if !s.IsDir() {
+			match = p
+			break
+		}
+	}
+
+	// Just return a generic not exist error at this point if we didn't have a match, this
+	// will allow the caller to handle displaying a more friendly error to the user. If we
+	// did match in the default location, go ahead and return successfully.
+	if match == "" {
+		return os.ErrNotExist
+	} else if match == config.DefaultLocation {
+		return nil
+	}
+
+	// The rest of this function simply creates the new default location and moves the
+	// old configuration file over to the new location, then sets the permissions on the
+	// file correctly so that only the user running this process can read it.
+	p, _ := filepath.Split(config.DefaultLocation)
+	if err := os.MkdirAll(p, 0755); err != nil {
+		return err
+	}
+
+	if err := os.Rename(match, config.DefaultLocation); err != nil {
+		return err
+	}
+
+	return os.Chmod(config.DefaultLocation, 0600)
+}

cmd/configure.go

@@ -0,0 +1,183 @@
+package cmd
+
+import (
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"github.com/AlecAivazis/survey/v2"
+	"github.com/AlecAivazis/survey/v2/terminal"
+	"github.com/pterodactyl/wings/config"
+	"github.com/spf13/cobra"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"regexp"
+	"time"
+)
+
+var (
+	configureArgs struct {
+		PanelURL      string
+		Token         string
+		ConfigPath    string
+		Node          string
+		Override      bool
+		AllowInsecure bool
+	}
+)
+
+var nodeIdRegex = regexp.MustCompile(`^(\d+)$`)
+
+var configureCmd = &cobra.Command{
+	Use:   "configure",
+	Short: "Use a token to configure wings automatically",
+	Run:   configureCmdRun,
+}
+
+func init() {
+	configureCmd.PersistentFlags().StringVarP(&configureArgs.PanelURL, "panel-url", "p", "", "The base URL for this daemon's panel")
+	configureCmd.PersistentFlags().StringVarP(&configureArgs.Token, "token", "t", "", "The API key to use for fetching node information")
+	configureCmd.PersistentFlags().StringVarP(&configureArgs.Node, "node", "n", "", "The ID of the node which will be connected to this daemon")
+	configureCmd.PersistentFlags().StringVarP(&configureArgs.ConfigPath, "config-path", "c", config.DefaultLocation, "The path where the configuration file should be made")
+	configureCmd.PersistentFlags().BoolVar(&configureArgs.Override, "override", false, "Set to true to override an existing configuration for this node")
+	configureCmd.PersistentFlags().BoolVar(&configureArgs.AllowInsecure, "allow-insecure", false, "Set to true to disable certificate checking")
+}
+
+func configureCmdRun(cmd *cobra.Command, args []string) {
+	if configureArgs.AllowInsecure {
+		http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{
+			InsecureSkipVerify: true,
+		}
+	}
+
+	if _, err := os.Stat(configureArgs.ConfigPath); err == nil && !configureArgs.Override {
+		survey.AskOne(&survey.Confirm{Message: "Override existing configuration file"}, &configureArgs.Override)
+		if !configureArgs.Override {
+			fmt.Println("Aborting process; a configuration file already exists for this node.")
+			os.Exit(1)
+		}
+	} else if err != nil && !os.IsNotExist(err) {
+		panic(err)
+	}
+
+	var questions []*survey.Question
+	if configureArgs.PanelURL == "" {
+		questions = append(questions, &survey.Question{
+			Name:   "PanelURL",
+			Prompt: &survey.Input{Message: "Panel URL: "},
+			Validate: func(ans interface{}) error {
+				if str, ok := ans.(string); ok {
+					_, err := url.ParseRequestURI(str)
+					return err
+				}
+				return nil
+			},
+		})
+	}
+
+	if configureArgs.Token == "" {
+		questions = append(questions, &survey.Question{
+			Name:   "Token",
+			Prompt: &survey.Input{Message: "API Token: "},
+			Validate: func(ans interface{}) error {
+				if str, ok := ans.(string); ok {
+					if len(str) == 0 {
+						return fmt.Errorf("please provide a valid authentication token")
+					}
+				}
+				return nil
+			},
+		})
+	}
+
+	if configureArgs.Node == "" {
+		questions = append(questions, &survey.Question{
+			Name:   "Node",
+			Prompt: &survey.Input{Message: "Node ID: "},
+			Validate: func(ans interface{}) error {
+				if str, ok := ans.(string); ok {
+					if !nodeIdRegex.Match([]byte(str)) {
+						return fmt.Errorf("please provide a valid authentication token")
+					}
+				}
+				return nil
+			},
+		})
+	}
+
+	if err := survey.Ask(questions, &configureArgs); err != nil {
+		if err == terminal.InterruptErr {
+			return
+		}
+
+		panic(err)
+	}
+
+	c := &http.Client{
+		Timeout: time.Second * 30,
+	}
+
+	req, err := getRequest()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("%+v", req.Header)
+	fmt.Printf(req.URL.String())
+
+	res, err := c.Do(req)
+	if err != nil {
+		fmt.Println("Failed to fetch configuration from the panel.\n", err.Error())
+		os.Exit(1)
+	}
+	defer res.Body.Close()
+
+	if res.StatusCode == http.StatusForbidden || res.StatusCode == http.StatusUnauthorized {
+		fmt.Println("The authentication credentials provided were not valid.")
+		os.Exit(1)
+	} else if res.StatusCode != http.StatusOK {
+		b, _ := ioutil.ReadAll(res.Body)
+
+		fmt.Println("An error occurred while processing this request.\n", string(b))
+		os.Exit(1)
+	}
+
+	b, err := ioutil.ReadAll(res.Body)
+
+	cfg, err := config.NewFromPath(configPath)
+	if err != nil {
+		panic(err)
+	}
+
+	if err := json.Unmarshal(b, cfg); err != nil {
+		panic(err)
+	}
+
+	if err = cfg.WriteToDisk(); err != nil {
+		panic(err)
+	}
+
+	fmt.Println("Successfully configured wings.")
+}
+
+func getRequest() (*http.Request, error) {
+	u, err := url.Parse(configureArgs.PanelURL)
+	if err != nil {
+		panic(err)
+	}
+
+	u.Path = path.Join(u.Path, fmt.Sprintf("api/application/nodes/%s/configuration", configureArgs.Node))
+
+	r, err := http.NewRequest(http.MethodGet, u.String(), nil)
+	if err != nil {
+		return nil, err
+	}
+
+	r.Header.Set("Accept", "application/vnd.pterodactyl.v1+json")
+	r.Header.Set("Content-Type", "application/json")
+	r.Header.Set("Authorization", fmt.Sprintf("Bearer %s", configureArgs.Token))
+
+	return r, nil
+}

cmd/root.go

@@ -0,0 +1,308 @@
+package cmd
+
+import (
+	"crypto/tls"
+	"fmt"
+	"github.com/apex/log"
+	"github.com/mitchellh/colorstring"
+	"github.com/pterodactyl/wings/loggers/cli"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+
+	"github.com/pkg/errors"
+	"github.com/pkg/profile"
+	"github.com/pterodactyl/wings/config"
+	"github.com/pterodactyl/wings/environment"
+	"github.com/pterodactyl/wings/router"
+	"github.com/pterodactyl/wings/server"
+	"github.com/pterodactyl/wings/sftp"
+	"github.com/pterodactyl/wings/system"
+	"github.com/remeh/sizedwaitgroup"
+	"github.com/spf13/cobra"
+	"go.uber.org/zap"
+)
+
+var configPath = config.DefaultLocation
+var debug = false
+var shouldRunProfiler = false
+
+var root = &cobra.Command{
+	Use:   "wings",
+	Short: "The wings of the pterodactyl game management panel",
+	Long:  ``,
+	Run:   rootCmdRun,
+}
+
+func init() {
+	root.PersistentFlags().StringVar(&configPath, "config", config.DefaultLocation, "set the location for the configuration file")
+	root.PersistentFlags().BoolVar(&debug, "debug", false, "pass in order to run wings in debug mode")
+	root.PersistentFlags().BoolVar(&shouldRunProfiler, "profile", false, "pass in order to profile wings")
+
+	root.AddCommand(configureCmd)
+}
+
+// Get the configuration path based on the arguments provided.
+func readConfiguration() (*config.Configuration, error) {
+	var p = configPath
+	if !strings.HasPrefix(p, "/") {
+		d, err := os.Getwd()
+		if err != nil {
+			return nil, err
+		}
+
+		p = path.Clean(path.Join(d, configPath))
+	}
+
+	if s, err := os.Stat(p); err != nil {
+		return nil, errors.WithStack(err)
+	} else if s.IsDir() {
+		return nil, errors.New("cannot use directory as configuration file path")
+	}
+
+	return config.ReadConfiguration(p)
+}
+
+func rootCmdRun(*cobra.Command, []string) {
+	if shouldRunProfiler {
+		defer profile.Start().Stop()
+	}
+
+	// Only attempt configuration file relocation if a custom location has not
+	// been specified in the command startup.
+	if configPath == config.DefaultLocation {
+		if err := RelocateConfiguration(); err != nil {
+			if os.IsNotExist(err) {
+				exitWithConfigurationNotice()
+			}
+
+			panic(err)
+		}
+	}
+
+	c, err := readConfiguration()
+	if err != nil {
+		panic(err)
+	}
+
+	if debug {
+		c.Debug = true
+	}
+
+	printLogo()
+	if err := configureLogging(c.Debug); err != nil {
+		panic(err)
+	}
+
+	log.WithField("path", c.GetPath()).Info("loading configuration from path")
+	if c.Debug {
+		log.Debug("running in debug mode")
+		log.Info("certificate checking is disabled")
+
+		http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{
+			InsecureSkipVerify: true,
+		}
+	}
+
+	config.Set(c)
+	config.SetDebugViaFlag(debug)
+
+	if err := c.System.ConfigureDirectories(); err != nil {
+		log.Fatal("failed to configure system directories for pterodactyl")
+		panic(err)
+	}
+
+	log.WithField("username", c.System.Username).Info("checking for pterodactyl system user")
+	if su, err := c.EnsurePterodactylUser(); err != nil {
+		log.Error("failed to create pterodactyl system user")
+		panic(err)
+		return
+	} else {
+		log.WithFields(log.Fields{
+			"username": su.Username,
+			"uid":      su.Uid,
+			"gid":      su.Gid,
+		}).Info("configured system user successfully")
+	}
+
+	log.Info("beginning file permission setting on server data directories")
+	if err := c.EnsureFilePermissions(); err != nil {
+		log.WithField("error", err).Error("failed to properly chown data directories")
+	} else {
+		log.Info("finished ensuring file permissions")
+	}
+
+	if err := server.LoadDirectory(); err != nil {
+		log.WithField("error", err).Fatal("failed to load server configurations")
+		return
+	}
+
+	if err := environment.ConfigureDocker(&c.Docker); err != nil {
+		log.WithField("error", err).Fatal("failed to configure docker environment")
+		os.Exit(1)
+	}
+
+	if err := c.WriteToDisk(); err != nil {
+		log.WithField("error", err).Error("failed to save configuration to disk")
+	}
+
+	// Just for some nice log output.
+	for _, s := range server.GetServers().All() {
+		log.WithField("server", s.Uuid).Info("loaded configuration for server")
+	}
+
+	// Create a new WaitGroup that limits us to 4 servers being bootstrapped at a time
+	// on Wings. This allows us to ensure the environment exists, write configurations,
+	// and reboot processes without causing a slow-down due to sequential booting.
+	wg := sizedwaitgroup.New(4)
+
+	for _, serv := range server.GetServers().All() {
+		wg.Add()
+
+		go func(s *server.Server) {
+			// Required for tracing purposes.
+			var err error
+
+			defer func() {
+				s.Log().Trace("ensuring server environment exists").Stop(&err)
+				wg.Done()
+			}()
+
+			// Create a server environment if none exists currently. This allows us to recover from Docker
+			// being reinstalled on the host system for example.
+			if err = s.Environment.Create(); err != nil {
+				s.Log().WithField("error", err).Error("failed to process environment")
+			}
+
+			r, err := s.Environment.IsRunning()
+			if err != nil {
+				s.Log().WithField("error", err).Error("error checking server environment status")
+			}
+
+			// If the server is currently running on Docker, mark the process as being in that state.
+			// We never want to stop an instance that is currently running external from Wings since
+			// that is a good way of keeping things running even if Wings gets in a very corrupted state.
+			//
+			// This will also validate that a server process is running if the last tracked state we have
+			// is that it was running, but we see that the container process is not currently running.
+			if r || (!r && s.IsRunning()) {
+				s.Log().Info("detected server is running, re-attaching to process...")
+				if err := s.Environment.Start(); err != nil {
+					s.Log().WithField("error", errors.WithStack(err)).Warn("failed to properly start server detected as already running")
+				}
+
+				return
+			}
+
+			// Addresses potentially invalid data in the stored file that can cause Wings to lose
+			// track of what the actual server state is.
+			s.SetState(server.ProcessOfflineState)
+		}(serv)
+	}
+
+	// Wait until all of the servers are ready to go before we fire up the HTTP server.
+	wg.Wait()
+
+	// Initalize SFTP.
+	sftp.Initialize(c)
+
+	// Ensure the archive directory exists.
+	if err := os.MkdirAll(c.System.ArchiveDirectory, 0755); err != nil {
+		log.WithField("error", err).Error("failed to create archive directory")
+	}
+
+	// Ensure the backup directory exists.
+	if err := os.MkdirAll(c.System.BackupDirectory, 0755); err != nil {
+		log.WithField("error", err).Error("failed to create backup directory")
+	}
+
+	log.WithFields(log.Fields{
+		"ssl": c.Api.Ssl.Enabled,
+		"host": c.Api.Host,
+		"port": c.Api.Port,
+	}).Info("configuring webserver...")
+
+	r := router.Configure()
+	addr := fmt.Sprintf("%s:%d", c.Api.Host, c.Api.Port)
+
+	if c.Api.Ssl.Enabled {
+		if err := r.RunTLS(addr, c.Api.Ssl.CertificateFile, c.Api.Ssl.KeyFile); err != nil {
+			log.WithField("error", err).Fatal("failed to configure HTTPS server")
+			os.Exit(1)
+		}
+	} else {
+		if err := r.Run(addr); err != nil {
+			log.WithField("error", err).Fatal("failed to configure HTTP server")
+			os.Exit(1)
+		}
+	}
+}
+
+// Execute calls cobra to handle cli commands
+func Execute() error {
+	return root.Execute()
+}
+
+// Configures the global logger for Zap so that we can call it from any location
+// in the code without having to pass around a logger instance.
+func configureLogging(debug bool) error {
+	cfg := zap.NewProductionConfig()
+	if debug {
+		cfg = zap.NewDevelopmentConfig()
+	}
+
+	cfg.Encoding = "console"
+	cfg.OutputPaths = []string{
+		"stdout",
+	}
+
+	logger, err := cfg.Build()
+	if err != nil {
+		return err
+	}
+
+	zap.ReplaceGlobals(logger)
+
+	log.SetHandler(cli.Default)
+	log.SetLevel(log.DebugLevel)
+
+	return nil
+}
+
+// Prints the wings logo, nothing special here!
+func printLogo() {
+	fmt.Println()
+	fmt.Println(`                     ____`)
+	fmt.Println(`__ Pterodactyl _____/___/_______ _______ ______`)
+	fmt.Println(`\_____\    \/\/    /   /       /  __   /   ___/`)
+	fmt.Println(`   \___\          /   /   /   /  /_/  /___   /`)
+	fmt.Println(`        \___/\___/___/___/___/___    /______/`)
+	fmt.Println(`                            /_______/ v` + system.Version)
+	fmt.Println()
+	fmt.Println(`Website: https://pterodactyl.io`)
+	fmt.Println(`Source: https://github.com/pterodactyl/wings`)
+	fmt.Println()
+	fmt.Println(`Copyright © 2018 - 2020 Dane Everitt & Contributors`)
+	fmt.Println()
+}
+
+func exitWithConfigurationNotice() {
+	fmt.Print(colorstring.Color(`
+[_red_][white][bold]Error: Configuration File Not Found[reset]
+
+Wings was not able to locate your configuration file, and therefore is not
+able to complete its boot process.
+
+Please ensure you have copied your instance configuration file into
+the default location, or have provided the --config flag to use a
+custom location.
+
+Default Location: /etc/pterodactyl/config.yml
+
+[yellow]This is not a bug with this software. Please do not make a bug report
+for this issue, it will be closed.[reset]
+
+`))
+	os.Exit(1)
+}

config/config.go

@@ -1,9 +1,12 @@
 package config
 
 import (
+	"errors"
 	"fmt"
+	"github.com/apex/log"
+	"github.com/cobaugh/osrelease"
 	"github.com/creasty/defaults"
-	"go.uber.org/zap"
+	"github.com/gbrlsnchs/jwt/v3"
 	"gopkg.in/yaml.v2"
 	"io/ioutil"
 	"os"
@@ -16,14 +19,36 @@ import (
 	"sync"
 )
 
+const DefaultLocation = "/etc/pterodactyl/config.yml"
+
 type Configuration struct {
+	sync.RWMutex `json:"-" yaml:"-"`
+
+	// The location from which this configuration instance was instantiated.
+	path string
+
+	// Locker specific to writing the configuration to the disk, this happens
+	// in areas that might already be locked so we don't want to crash the process.
+	writeLock sync.Mutex
+
 	// Determines if wings should be running in debug mode. This value is ignored
 	// if the debug flag is passed through the command line arguments.
 	Debug bool
 
-	Api    ApiConfiguration
-	System SystemConfiguration
-	Docker DockerConfiguration
+	// A unique identifier for this node in the Panel.
+	Uuid string
+
+	// An identifier for the token which must be included in any requests to the panel
+	// so that the token can be looked up correctly.
+	AuthenticationTokenId string `json:"token_id" yaml:"token_id"`
+
+	// The token used when performing operations. Requests to this instance must
+	// validate against it.
+	AuthenticationToken string `json:"token" yaml:"token"`
+
+	Api    ApiConfiguration    `json:"api" yaml:"api"`
+	System SystemConfiguration `json:"system" yaml:"system"`
+	Docker DockerConfiguration `json:"docker" yaml:"docker"`
 
 	// The amount of time in seconds that should elapse between disk usage checks
 	// run by the daemon. Setting a higher number can result in better IO performance
@@ -41,134 +66,35 @@ type Configuration struct {
 		// The number of seconds that must elapse before the internal counter
 		// begins decrementing warnings assigned to a process that is outputting
 		// too much data.
-		DecaySeconds int `default:"10" yaml:"decay"`
+		DecaySeconds int `default:"10" json:"decay" yaml:"decay"`
 
 		// The total number of bytes allowed to be output by a server process
 		// per interval.
-		BytesPerInterval int `default:"4096" yaml:"bytes"`
+		BytesPerInterval int `default:"4096" json:"bytes" yaml:"bytes"`
 
 		// The amount of time that should lapse between data output throttle
 		// checks. This should be defined in milliseconds.
-		CheckInterval int `defauly:"100" yaml:"check_interval"`
+		CheckInterval int `default:"100" yaml:"check_interval"`
 	}
 
 	// The location where the panel is running that this daemon should connect to
 	// to collect data and send events.
-	PanelLocation string `yaml:"remote"`
-
-	// The token used when performing operations. Requests to this instance must
-	// validate aganist it.
-	AuthenticationToken string `yaml:"token"`
-}
-
-// Defines basic system configuration settings.
-type SystemConfiguration struct {
-	// Directory where the server data is stored at.
-	Data string `default:"/srv/daemon-data" yaml:"data"`
-
-	// The user that should own all of the server files, and be used for containers.
-	Username string `default:"pterodactyl" yaml:"username"`
-
-	// Definitions for the user that gets created to ensure that we can quickly access
-	// this information without constantly having to do a system lookup.
-	User struct {
-		Uid int
-		Gid int
-	}
-
-	// Determines wether or not server data should be synced when the Daemon is started.
-	// If set to false, data will only be synced when a server process is started, or
-	// detected as started when booting.
-	SyncServersOnBoot bool `default:"true" yaml:"sync_servers_on_boot"`
-
-	// The path to the system's timezone file that will be mounted into running Docker containers.
-	TimezonePath string `yaml:"timezone_path"`
-
-	// Determines if permissions for a server should be set automatically on
-	// daemon boot. This can take a long time on systems with many servers, or on
-	// systems with servers containing thousands of files.
-	//
-	// Setting this to true by default helps us avoid a lot of support requests
-	// from people that keep trying to move files around as a root user leading
-	// to server permission issues.
-	//
-	// In production and heavy use environments where boot speed is essential,
-	// this should be set to false as servers will self-correct permissions on
-	// boot anyways.
-	SetPermissionsOnBoot bool `default:"true" yaml:"set_permissions_on_boot"`
-
-	// Determines if Wings should detect a server that stops with a normal exit code of
-	// "0" as being crashed if the process stopped without any Wings interaction. E.g.
-	// the user did not press the stop button, but the process stopped cleanly.
-	DetectCleanExitAsCrash bool `default:"true" yaml:"detect_clean_exit_as_crash"`
-
-	Sftp *SftpConfiguration `yaml:"sftp"`
+	PanelLocation string `json:"remote" yaml:"remote"`
 }
 
 // Defines the configuration of the internal SFTP server.
 type SftpConfiguration struct {
-	// If set to false, the internal SFTP server will not be booted and you will need
-	// to run the SFTP server independent of this program.
-	UseInternalSystem bool `default:"true" yaml:"use_internal"`
 	// If set to true disk checking will not be performed. This will prevent the SFTP
 	// server from checking the total size of a directory when uploading files.
 	DisableDiskChecking bool `default:"false" yaml:"disable_disk_checking"`
 	// The bind address of the SFTP server.
-	Address string `default:"0.0.0.0" yaml:"bind_address"`
+	Address string `default:"0.0.0.0" json:"bind_address" yaml:"bind_address"`
 	// The bind port of the SFTP server.
-	Port int `default:"2022" yaml:"bind_port"`
+	Port int `default:"2022" json:"bind_port" yaml:"bind_port"`
 	// If set to true, no write actions will be allowed on the SFTP server.
 	ReadOnly bool `default:"false" yaml:"read_only"`
 }
 
-type dockerNetworkInterfaces struct {
-	V4 struct {
-		Subnet  string `default:"172.18.0.0/16"`
-		Gateway string `default:"172.18.0.1"`
-	}
-
-	V6 struct {
-		Subnet  string `default:"fdba:17c8:6c94::/64"`
-		Gateway string `default:"fdba:17c8:6c94::1011"`
-	}
-}
-
-type DockerNetworkConfiguration struct {
-	// The interface that should be used to create the network. Must not conflict
-	// with any other interfaces in use by Docker or on the system.
-	Interface string `default:"172.18.0.1"`
-
-	// The name of the network to use. If this network already exists it will not
-	// be created. If it is not found, a new network will be created using the interface
-	// defined.
-	Name       string                  `default:"pterodactyl_nw"`
-	ISPN       bool                    `default:"false" yaml:"ispn"`
-	Driver     string                  `default:"bridge"`
-	IsInternal bool                    `default:"false" yaml:"is_internal"`
-	EnableICC  bool                    `default:"true" yaml:"enable_icc"`
-	Interfaces dockerNetworkInterfaces `yaml:"interfaces"`
-}
-
-// Defines the docker configuration used by the daemon when interacting with
-// containers and networks on the system.
-type DockerConfiguration struct {
-	// Network configuration that should be used when creating a new network
-	// for containers run through the daemon.
-	Network DockerNetworkConfiguration `yaml:"network"`
-
-	// If true, container images will be updated when a server starts if there
-	// is an update available. If false the daemon will not attempt updates and will
-	// defer to the host system to manage image updates.
-	UpdateImages bool `default:"true" yaml:"update_images"`
-
-	// The location of the Docker socket.
-	Socket string `default:"/var/run/docker.sock"`
-
-	// Defines the location of the timezone file on the host system that should
-	// be mounted into the created containers so that they all use the same time.
-	TimezonePath string `yaml:"timezone_path"`
-}
-
 // Defines the configuration for the internal API that is exposed by the
 // daemon webserver.
 type ApiConfiguration struct {
@@ -181,12 +107,12 @@ type ApiConfiguration struct {
 	// SSL configuration for the daemon.
 	Ssl struct {
 		Enabled         bool   `default:"false"`
-		CertificateFile string `yaml:"cert"`
-		KeyFile         string `yaml:"key"`
+		CertificateFile string `json:"cert" yaml:"cert"`
+		KeyFile         string `json:"key" yaml:"key"`
 	}
 
 	// The maximum size for files uploaded through the Panel in bytes.
-	UploadLimit int `default:"100" yaml:"upload_limit"`
+	UploadLimit int `default:"100" json:"upload_limit" yaml:"upload_limit"`
 }
 
 // Reads the configuration from the provided file and returns the configuration
@@ -199,12 +125,15 @@ func ReadConfiguration(path string) (*Configuration, error) {
 
 	c := new(Configuration)
 	// Configures the default values for many of the configuration options present
-	// in the structs. Valkues set in the configuration file take priority over the
+	// in the structs. Values set in the configuration file take priority over the
 	// default values.
 	if err := defaults.Set(c); err != nil {
 		return nil, err
 	}
 
+	// Track the location where we created this configuration.
+	c.unsafeSetPath(path)
+
 	// Replace environment variables within the configuration file with their
 	// values from the host system.
 	b = []byte(os.ExpandEnv(string(b)))
@@ -216,23 +145,76 @@ func ReadConfiguration(path string) (*Configuration, error) {
 	return c, nil
 }
 
+var Mutex sync.RWMutex
+
 var _config *Configuration
+var _jwtAlgo *jwt.HMACSHA
 var _debugViaFlag bool
 
-// Set the global configuration instance.
+// Set the global configuration instance. This is a blocking operation such that
+// anything trying to set a different configuration value, or read the configuration
+// will be paused until it is complete.
 func Set(c *Configuration) {
+	Mutex.Lock()
+
+	if _config == nil || _config.AuthenticationToken != c.AuthenticationToken {
+		_jwtAlgo = jwt.NewHS256([]byte(c.AuthenticationToken))
+	}
+
 	_config = c
+	Mutex.Unlock()
 }
 
 func SetDebugViaFlag(d bool) {
 	_debugViaFlag = d
 }
 
-// Get the global configuration instance.
+// Get the global configuration instance. This is a read-safe operation that will block
+// if the configuration is presently being modified.
 func Get() *Configuration {
+	Mutex.RLock()
+	defer Mutex.RUnlock()
+
 	return _config
 }
 
+// Returns the in-memory JWT algorithm.
+func GetJwtAlgorithm() *jwt.HMACSHA {
+	Mutex.RLock()
+	defer Mutex.RUnlock()
+
+	return _jwtAlgo
+}
+
+// Create a new struct and set the path where it should be stored.
+func NewFromPath(path string) (*Configuration, error) {
+	c := new(Configuration)
+	if err := defaults.Set(c); err != nil {
+		return c, err
+	}
+
+	c.unsafeSetPath(path)
+
+	return c, nil
+}
+
+// Sets the path where the configuration file is located on the server. This function should
+// not be called except by processes that are generating the configuration such as the configration
+// command shipped with this software.
+func (c *Configuration) unsafeSetPath(path string) {
+	c.Lock()
+	c.path = path
+	c.Unlock()
+}
+
+// Returns the path for this configuration file.
+func (c *Configuration) GetPath() string {
+	c.RLock()
+	defer c.RUnlock()
+
+	return c.path
+}
+
 // Ensures that the Pterodactyl core user exists on the system. This user will be the
 // owner of all data in the root data directory and is used as the user within containers.
 //
@@ -258,12 +240,12 @@ func (c *Configuration) EnsurePterodactylUser() (*user.User, error) {
 
 	// Alpine Linux is the only OS we currently support that doesn't work with the useradd command, so
 	// in those cases we just modify the command a bit to work as expected.
-	if strings.HasPrefix(sysName, "Alpine") {
+	if strings.HasPrefix(sysName, "alpine") {
 		command = fmt.Sprintf("adduser -S -D -H -G %[1]s -s /bin/false %[1]s", c.System.Username)
 
 		// We have to create the group first on Alpine, so do that here before continuing on
 		// to the user creation process.
-		if _, err := exec.Command("addgroup", "-s", c.System.Username).Output(); err != nil {
+		if _, err := exec.Command("addgroup", "-S", c.System.Username).Output(); err != nil {
 			return nil, err
 		}
 	}
@@ -286,9 +268,11 @@ func (c *Configuration) setSystemUser(u *user.User) error {
 	uid, _ := strconv.Atoi(u.Uid)
 	gid, _ := strconv.Atoi(u.Gid)
 
+	c.Lock()
 	c.System.Username = u.Username
 	c.System.User.Uid = uid
 	c.System.User.Gid = gid
+	c.Unlock()
 
 	return c.WriteToDisk()
 }
@@ -323,7 +307,7 @@ func (c *Configuration) EnsureFilePermissions() error {
 		// the item is not a folder, or is not a folder that matches the expected UUIDv4 format
 		// skip over it.
 		//
-		// If we do have a positive match, run a chown aganist the directory.
+		// If we do have a positive match, run a chown against the directory.
 		go func(f os.FileInfo) {
 			defer wg.Done()
 
@@ -335,7 +319,7 @@ func (c *Configuration) EnsureFilePermissions() error {
 			gid, _ := strconv.Atoi(su.Gid)
 
 			if err := os.Chown(path.Join(c.System.Data, f.Name()), uid, gid); err != nil {
-				zap.S().Warnw("failed to chown server directory", zap.String("directory", f.Name()), zap.Error(err))
+				log.WithField("error", err).WithField("directory", f.Name()).Warn("failed to chown server directory")
 			}
 		}(file)
 	}
@@ -349,11 +333,9 @@ func (c *Configuration) EnsureFilePermissions() error {
 // lock on the file. This prevents something else from writing at the exact same time and
 // leading to bad data conditions.
 func (c *Configuration) WriteToDisk() error {
-	f, err := os.OpenFile("config.yml", os.O_WRONLY, os.ModeExclusive)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
+	// Obtain an exclusive write against the configuration file.
+	c.writeLock.Lock()
+	defer c.writeLock.Unlock()
 
 	ccopy := *c
 	// If debugging is set with the flag, don't save that to the configuration file, otherwise
@@ -362,12 +344,16 @@ func (c *Configuration) WriteToDisk() error {
 		ccopy.Debug = false
 	}
 
+	if c.path == "" {
+		return errors.New("cannot write configuration, no path defined in struct")
+	}
+
 	b, err := yaml.Marshal(&ccopy)
 	if err != nil {
 		return err
 	}
 
-	if _, err := f.Write(b); err != nil {
+	if err := ioutil.WriteFile(c.GetPath(), b, 0644); err != nil {
 		return err
 	}
 
@@ -376,12 +362,10 @@ func (c *Configuration) WriteToDisk() error {
 
 // Gets the system release name.
 func getSystemName() (string, error) {
-	cmd := exec.Command("lsb_release", "-is")
-
-	b, err := cmd.Output()
-	if err != nil {
+	// use osrelease to get release version and ID
+	if release, err := osrelease.Read(); err != nil {
 		return "", err
+	} else {
+		return release["ID"], nil
 	}
-
-	return string(b), nil
 }

config/config_docker.go

@@ -0,0 +1,53 @@
+package config
+
+type dockerNetworkInterfaces struct {
+	V4 struct {
+		Subnet  string `default:"172.18.0.0/16"`
+		Gateway string `default:"172.18.0.1"`
+	}
+
+	V6 struct {
+		Subnet  string `default:"fdba:17c8:6c94::/64"`
+		Gateway string `default:"fdba:17c8:6c94::1011"`
+	}
+}
+
+type DockerNetworkConfiguration struct {
+	// The interface that should be used to create the network. Must not conflict
+	// with any other interfaces in use by Docker or on the system.
+	Interface string `default:"172.18.0.1" json:"interface" yaml:"interface"`
+
+	// The DNS settings for containers.
+	Dns []string `default:"[\"1.1.1.1\", \"1.0.0.1\"]"`
+
+	// The name of the network to use. If this network already exists it will not
+	// be created. If it is not found, a new network will be created using the interface
+	// defined.
+	Name       string                  `default:"pterodactyl_nw"`
+	ISPN       bool                    `default:"false" yaml:"ispn"`
+	Driver     string                  `default:"bridge"`
+	Mode       string                  `default:"pterodactyl_nw" yaml:"network_mode"`
+	IsInternal bool                    `default:"false" yaml:"is_internal"`
+	EnableICC  bool                    `default:"true" yaml:"enable_icc"`
+	Interfaces dockerNetworkInterfaces `yaml:"interfaces"`
+}
+
+// Defines the docker configuration used by the daemon when interacting with
+// containers and networks on the system.
+type DockerConfiguration struct {
+	// Network configuration that should be used when creating a new network
+	// for containers run through the daemon.
+	Network DockerNetworkConfiguration `json:"network" yaml:"network"`
+
+	// If true, container images will be updated when a server starts if there
+	// is an update available. If false the daemon will not attempt updates and will
+	// defer to the host system to manage image updates.
+	UpdateImages bool `default:"true" json:"update_images" yaml:"update_images"`
+
+	// The location of the Docker socket.
+	Socket string `default:"/var/run/docker.sock" json:"socket" yaml:"socket"`
+
+	// Defines the location of the timezone file on the host system that should
+	// be mounted into the created containers so that they all use the same time.
+	TimezonePath string `default:"/etc/timezone" json:"timezone_path" yaml:"timezone_path"`
+}

config/config_system.go

@@ -0,0 +1,96 @@
+package config
+
+import (
+	"github.com/apex/log"
+	"os"
+	"path"
+)
+
+// Defines basic system configuration settings.
+type SystemConfiguration struct {
+	// The root directory where all of the pterodactyl data is stored at.
+	RootDirectory string `default:"/var/lib/pterodactyl" yaml:"root_directory"`
+
+	// Directory where logs for server installations and other wings events are logged.
+	LogDirectory string `default:"/var/log/pterodactyl" yaml:"log_directory"`
+
+	// Directory where the server data is stored at.
+	Data string `default:"/var/lib/pterodactyl/volumes" yaml:"data"`
+
+	// Directory where server archives for transferring will be stored.
+	ArchiveDirectory string `default:"/var/lib/pterodactyl/archives" yaml:"archive_directory"`
+
+	// Directory where local backups will be stored on the machine.
+	BackupDirectory string `default:"/var/lib/pterodactyl/backups" yaml:"backup_directory"`
+
+	// The user that should own all of the server files, and be used for containers.
+	Username string `default:"pterodactyl" yaml:"username"`
+
+	// Definitions for the user that gets created to ensure that we can quickly access
+	// this information without constantly having to do a system lookup.
+	User struct {
+		Uid int
+		Gid int
+	}
+
+	// Determines if permissions for a server should be set automatically on
+	// daemon boot. This can take a long time on systems with many servers, or on
+	// systems with servers containing thousands of files.
+	//
+	// Setting this to true by default helps us avoid a lot of support requests
+	// from people that keep trying to move files around as a root user leading
+	// to server permission issues.
+	//
+	// In production and heavy use environments where boot speed is essential,
+	// this should be set to false as servers will self-correct permissions on
+	// boot anyways.
+	SetPermissionsOnBoot bool `default:"true" yaml:"set_permissions_on_boot"`
+
+	// Determines if Wings should detect a server that stops with a normal exit code of
+	// "0" as being crashed if the process stopped without any Wings interaction. E.g.
+	// the user did not press the stop button, but the process stopped cleanly.
+	DetectCleanExitAsCrash bool `default:"true" yaml:"detect_clean_exit_as_crash"`
+
+	Sftp SftpConfiguration `yaml:"sftp"`
+}
+
+// Ensures that all of the system directories exist on the system. These directories are
+// created so that only the owner can read the data, and no other users.
+func (sc *SystemConfiguration) ConfigureDirectories() error {
+	log.WithField("path", sc.RootDirectory).Debug("ensuring root data directory exists")
+	if err := os.MkdirAll(sc.RootDirectory, 0700); err != nil {
+		return err
+	}
+
+	log.WithField("path", sc.LogDirectory).Debug("ensuring log directory exists")
+	if err := os.MkdirAll(path.Join(sc.LogDirectory, "/install"), 0700); err != nil {
+		return err
+	}
+
+	log.WithField("path", sc.Data).Debug("ensuring server data directory exists")
+	if err := os.MkdirAll(sc.Data, 0700); err != nil {
+		return err
+	}
+
+	log.WithField("path", sc.ArchiveDirectory).Debug("ensuring archive data directory exists")
+	if err := os.MkdirAll(sc.ArchiveDirectory, 0700); err != nil {
+		return err
+	}
+
+	log.WithField("path", sc.BackupDirectory).Debug("ensuring backup data directory exists")
+	if err := os.MkdirAll(sc.BackupDirectory, 0700); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Returns the location of the JSON file that tracks server states.
+func (sc *SystemConfiguration) GetStatesPath() string {
+	return path.Join(sc.RootDirectory, "states.json")
+}
+
+// Returns the location of the JSON file that tracks server states.
+func (sc *SystemConfiguration) GetInstallLogPath() string {
+	return path.Join(sc.LogDirectory, "install/")
+}

const.go

@@ -1,29 +0,0 @@
-package main
-
-import "os"
-
-const (
-	Version = "1.0.0-alpha.1"
-
-	// DefaultFilePerms are the file perms used for created files.
-	DefaultFilePerms os.FileMode = 0644
-
-	// DefaultFolderPerms are the file perms used for created folders.
-	DefaultFolderPerms os.FileMode = 0755
-
-	// ServersPath is the path of the servers within the configured DataPath.
-	ServersPath = "servers"
-
-	// ServerConfigFile is the filename of the server config file.
-	ServerConfigFile = "server.json"
-
-	// ServerDataPath is the path of the data of a single server.
-	ServerDataPath = "data"
-
-	// DockerContainerPrefix is the prefix used for naming Docker containers.
-	// It's also used to prefix the hostnames of the docker containers.
-	DockerContainerPrefix = "ptdl-"
-
-	// WSMaxMessages is the maximum number of messages that are sent in one transfer.
-	WSMaxMessages = 10
-)

data/.gitignore

@@ -1 +0,0 @@
-servers/*.yml

docker-compose.example.yml

@@ -0,0 +1,26 @@
+version: '3'
+services:
+  daemon:
+    build: .
+    restart: always
+    hostname: daemon
+    ports:
+      - "8080:8080"
+      - "2022:2022"
+    tty: true
+    environment:
+      - "DEBUG=false"
+    volumes:
+      - "/var/run/docker.sock:/var/run/docker.sock"
+      - "/var/lib/docker/containers/:/var/lib/docker/containers/"
+      - "/var/lib/pterodactyl/:/var/lib/pterodactyl/"
+      - "/srv/daemon-data/:/srv/daemon-data/"
+      - "/tmp/pterodactyl/:/tmp/pterodactyl/"
+      - "/etc/timezone:/etc/timezone:ro"
+      ## Required for ssl if you user let's encrypt. uncomment to use.
+      ## - "/etc/letsencrypt/:/etc/letsencrypt/"
+networks:
+  default:
+    ipam:
+      config:
+        - subnet: 172.21.0.0/16

environment/docker.go

@@ -1,16 +1,17 @@
-package main
+package environment
 
 import (
 	"context"
+	"github.com/apex/log"
+
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/client"
 	"github.com/pterodactyl/wings/config"
-	"go.uber.org/zap"
 )
 
 // Configures the required network for the docker environment.
-func ConfigureDockerEnvironment(c *config.DockerConfiguration) error {
+func ConfigureDocker(c *config.DockerConfiguration) error {
 	// Ensure the required docker network exists on the system.
 	cli, err := client.NewClientWithOpts(client.FromEnv)
 	if err != nil {
@@ -19,10 +20,10 @@ func ConfigureDockerEnvironment(c *config.DockerConfiguration) error {
 
 	resource, err := cli.NetworkInspect(context.Background(), c.Network.Name, types.NetworkInspectOptions{})
 	if err != nil && client.IsErrNotFound(err) {
-		zap.S().Infow("creating missing pterodactyl0 interface, this could take a few seconds...")
+		log.Info("creating missing pterodactyl0 interface, this could take a few seconds...")
 		return createDockerNetwork(cli, c)
 	} else if err != nil {
-		zap.S().Fatalw("failed to create required docker network for containers", zap.Error(err))
+		log.WithField("error", err).Fatal("failed to create required docker network for containers")
 	}
 
 	switch resource.Driver {

go.mod

@@ -1,6 +1,6 @@
 module github.com/pterodactyl/wings
 
-go 1.12
+go 1.13
 
 // Uncomment this in development environments to make changes to the core SFTP
 // server software. This assumes you're using the official Pterodactyl Environment
@@ -11,57 +11,67 @@ go 1.12
 // replace github.com/pterodactyl/sftp-server => ../sftp-server
 
 require (
+	github.com/AlecAivazis/survey/v2 v2.0.7
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
 	github.com/Jeffail/gabs/v2 v2.2.0
 	github.com/Microsoft/go-winio v0.4.7 // indirect
 	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
+	github.com/apex/log v1.3.0
 	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a
+	github.com/aws/aws-sdk-go v1.30.14 // indirect
 	github.com/beevik/etree v1.1.0
 	github.com/buger/jsonparser v0.0.0-20191204142016-1a29609e0929
+	github.com/cobaugh/osrelease v0.0.0-20181218015638-a93a0a55a249
 	github.com/containerd/fifo v0.0.0-20190226154929-a9fb20d87448 // indirect
 	github.com/creasty/defaults v1.3.0
 	github.com/docker/distribution v2.7.1+incompatible // indirect
 	github.com/docker/docker v0.0.0-20180422163414-57142e89befe
 	github.com/docker/go-connections v0.4.0
 	github.com/docker/go-units v0.3.3 // indirect
+	github.com/fatih/color v1.9.0
 	github.com/gabriel-vasile/mimetype v0.1.4
 	github.com/gbrlsnchs/jwt/v3 v3.0.0-rc.0
 	github.com/ghodss/yaml v1.0.0
-	github.com/gogo/protobuf v1.2.1 // indirect
+	github.com/gin-gonic/gin v1.6.2
+	github.com/golang/protobuf v1.3.5 // indirect
 	github.com/google/uuid v1.1.1
 	github.com/gorilla/websocket v1.4.0
 	github.com/gotestyourself/gotestyourself v2.2.0+incompatible // indirect
 	github.com/iancoleman/strcase v0.0.0-20191112232945-16388991a334
+	github.com/icza/dyno v0.0.0-20200205103839-49cb13720835
 	github.com/imdario/mergo v0.3.8
-	github.com/julienschmidt/httprouter v1.2.0
+	github.com/klauspost/pgzip v1.2.3
 	github.com/magiconair/properties v1.8.1
+	github.com/mattn/go-colorable v0.1.4
+	github.com/mattn/go-shellwords v1.0.10 // indirect
+	github.com/mholt/archiver/v3 v3.3.0
 	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db
-	github.com/olebedev/emitter v0.0.0-20190110104742-e8d1457e6aee
-	github.com/onsi/ginkgo v1.8.0 // indirect
-	github.com/onsi/gomega v1.5.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/patrickmn/go-cache v2.1.0+incompatible
-	github.com/pkg/errors v0.8.1
-	github.com/pkg/sftp v1.10.1 // indirect
-	github.com/pterodactyl/sftp-server v1.1.0
+	github.com/pkg/errors v0.9.1
+	github.com/pkg/profile v1.4.0
+	github.com/pkg/sftp v1.11.0 // indirect
+	github.com/pterodactyl/sftp-server v1.1.2
 	github.com/remeh/sizedwaitgroup v0.0.0-20180822144253-5e7302b12cce
-	github.com/sirupsen/logrus v1.0.5 // indirect
-	go.uber.org/atomic v1.5.1 // indirect
-	go.uber.org/multierr v1.4.0 // indirect
-	go.uber.org/zap v1.13.0
-	golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413
-	golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f // indirect
-	golang.org/x/net v0.0.0-20190923162816-aa69164e4478
-	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e // indirect
-	golang.org/x/sys v0.0.0-20191206220618-eeba5f6aabab // indirect
-	golang.org/x/text v0.3.2 // indirect
-	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
-	golang.org/x/tools v0.0.0-20191206204035-259af5ff87bd // indirect
-	golang.org/x/tools/gopls v0.1.7 // indirect
-	gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect
-	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
+	github.com/sabhiram/go-gitignore v0.0.0-20180611051255-d3107576ba94
+	github.com/smartystreets/goconvey v1.6.4 // indirect
+	github.com/spf13/cobra v0.0.7
+	github.com/stretchr/objx v0.2.0 // indirect
+	github.com/yuin/goldmark v1.1.30 // indirect
+	go.uber.org/zap v1.15.0
+	golang.org/x/crypto v0.0.0-20200429183012-4b2356b1ed79 // indirect
+	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
+	golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 // indirect
+	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a
+	golang.org/x/sys v0.0.0-20200509044756-6aff5f38e54f // indirect
+	golang.org/x/tools v0.0.0-20200509030707-2212a7e161a5 // indirect
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/ini.v1 v1.51.0
-	gopkg.in/yaml.v2 v2.2.2
+	gopkg.in/yaml.v2 v2.2.8
 	gotest.tools v2.2.0+incompatible // indirect
+	honnef.co/go/tools v0.0.1-2020.1.3 // indirect
 )

go.sum

@@ -1,3 +1,6 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/AlecAivazis/survey/v2 v2.0.7 h1:+f825XHLse/hWd2tE/V5df04WFGimk34Eyg/z35w/rc=
+github.com/AlecAivazis/survey/v2 v2.0.7/go.mod h1:mlizQTaPjnR4jcpwRSaSlkbsRfYFEyKgLQvYTzxxiHA=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
@@ -6,23 +9,53 @@ github.com/Jeffail/gabs/v2 v2.2.0 h1:7touC+WzbQ7LO5+mwgxT44miyTqAVCOlIWLA6PiIB5w
 github.com/Jeffail/gabs/v2 v2.2.0/go.mod h1:xCn81vdHKxFUuWWAaD5jCTQDNPBMh5pPs9IJ+NcziBI=
 github.com/Microsoft/go-winio v0.4.7 h1:vOvDiY/F1avSWlCWiKJjdYKz2jVjTK3pWPHndeG4OAY=
 github.com/Microsoft/go-winio v0.4.7/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
+github.com/Netflix/go-expect v0.0.0-20180615182759-c93bf25de8e8 h1:xzYJEypr/85nBpB11F9br+3HUrpgb+fcm5iADzXXYEw=
+github.com/Netflix/go-expect v0.0.0-20180615182759-c93bf25de8e8/go.mod h1:oX5x61PbNXchhh0oikYAH+4Pcfw5LKv21+Jnpr6r6Pc=
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
 github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/andybalholm/brotli v0.0.0-20190621154722-5f990b63d2d6 h1:bZ28Hqta7TFAK3Q08CMvv8y3/8ATaEqv2nGoc6yff6c=
+github.com/andybalholm/brotli v0.0.0-20190621154722-5f990b63d2d6/go.mod h1:+lx6/Aqd1kLJ1GQfkvOnaZ1WGmLpMpbprPuIOOZX30U=
+github.com/apex/log v1.3.0 h1:1fyfbPvUwD10nMoh3hY6MXzvZShJQn9/ck7ATgAt5pA=
+github.com/apex/log v1.3.0/go.mod h1:jd8Vpsr46WAe3EZSQ/IUMs2qQD/GOycT5rPWCO1yGcs=
+github.com/apex/logs v0.0.4/go.mod h1:XzxuLZ5myVHDy9SAmYpamKKRNApGj54PfYLcFrXqDwo=
+github.com/aphistic/golf v0.0.0-20180712155816-02c07f170c5a/go.mod h1:3NqKYiepwy8kCu4PNA+aP7WUV72eXWJeP9/r3/K9aLE=
+github.com/aphistic/sweet v0.2.0/go.mod h1:fWDlIh/isSE9n6EPsRmC0det+whmX6dJid3stzu0Xys=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a h1:idn718Q4B6AGu/h5Sxe66HYVdqdGu2l9Iebqhi/AEoA=
 github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
+github.com/aws/aws-sdk-go v1.20.6/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
+github.com/aws/aws-sdk-go v1.30.14 h1:vZfX2b/fknc9wKcytbLWykM7in5k6dbQ8iHTJDUP1Ng=
+github.com/aws/aws-sdk-go v1.30.14/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
+github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59 h1:WWB576BN5zNSZc/M9d/10pqEx5VHNhaQ/yOVAkmj5Yo=
+github.com/aybabtme/rgbterm v0.0.0-20170906152045-cc83f3b3ce59/go.mod h1:q/89r3U2H7sSsE2t6Kca0lfwTK8JdoNGS/yzM/4iH5I=
 github.com/beevik/etree v1.1.0 h1:T0xke/WvNtMoCqgzPhkX2r4rjY3GDZFi+FjpRZY2Jbs=
 github.com/beevik/etree v1.1.0/go.mod h1:r8Aw8JqVegEf0w2fDnATrX9VpkMcyFeM0FhwO62wh+A=
-github.com/buger/jsonparser v0.0.0-20181023193515-52c6e1462ebd/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
-github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23 h1:D21IyuvjDCshj1/qq+pCNd3VZOAEI9jy6Bi131YlXgI=
-github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/buger/jsonparser v0.0.0-20191204142016-1a29609e0929 h1:MW/JDk68Rny52yI0M0N+P8lySNgB+NhpI/uAmhgOhUM=
 github.com/buger/jsonparser v0.0.0-20191204142016-1a29609e0929/go.mod h1:tgcrVJ81GPSF0mz+0nu1Xaz0fazGPrmmJfJtxjbHhUQ=
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http.go

@@ -1,559 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"github.com/buger/jsonparser"
-	"github.com/gorilla/websocket"
-	"github.com/julienschmidt/httprouter"
-	"github.com/pkg/errors"
-	"github.com/pterodactyl/wings/config"
-	"github.com/pterodactyl/wings/installer"
-	"github.com/pterodactyl/wings/server"
-	"go.uber.org/zap"
-	"io"
-	"net/http"
-	"os"
-	"strconv"
-	"strings"
-)
-
-// Retrieves a server out of the collection by UUID.
-func (rt *Router) GetServer(uuid string) *server.Server {
-	return server.GetServers().Find(func(i *server.Server) bool {
-		return i.Uuid == uuid
-	})
-}
-
-type Router struct {
-	upgrader websocket.Upgrader
-
-	// The authentication token defined in the config.yml file that allows
-	// a request to perform any action aganist the daemon.
-	token string
-}
-
-func (rt *Router) AuthenticateRequest(h httprouter.Handle) httprouter.Handle {
-	return rt.AuthenticateToken(rt.AuthenticateServer(h))
-}
-
-// Middleware to protect server specific routes. This will ensure that the server exists and
-// is in a state that allows it to be exposed to the API.
-func (rt *Router) AuthenticateServer(h httprouter.Handle) httprouter.Handle {
-	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-		if rt.GetServer(ps.ByName("server")) != nil {
-			h(w, r, ps)
-			return
-		}
-
-		http.NotFound(w, r)
-	}
-}
-
-// Attaches required access control headers to all of the requests.
-func (rt *Router) AttachAccessControlHeaders(w http.ResponseWriter, r *http.Request, ps httprouter.Params) (http.ResponseWriter, *http.Request, httprouter.Params) {
-	w.Header().Set("Access-Control-Allow-Origin", config.Get().PanelLocation)
-	w.Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
-
-	return w, r, ps
-}
-
-// Authenticates the request token aganist the given permission string, ensuring that
-// if it is a server permission, the token has control over that server. If it is a global
-// token, this will ensure that the request is using a properly signed global token.
-func (rt *Router) AuthenticateToken(h httprouter.Handle) httprouter.Handle {
-	return func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-		// Adds support for using this middleware on the websocket routes for servers. Those
-		// routes don't support Authorization headers, per the spec, so we abuse the socket
-		// protocol header and use that to pass the authorization token along to Wings without
-		// exposing the token in the URL directly. Neat. 📸
-		auth := strings.SplitN(r.Header.Get("Authorization"), " ", 2)
-
-		if len(auth) != 2 || auth[0] != "Bearer" {
-			w.Header().Set("WWW-Authenticate", "Bearer")
-			http.Error(w, "authorization failed", http.StatusUnauthorized)
-			return
-		}
-
-		// Try to match the request aganist the global token for the Daemon, regardless
-		// of the permission type. If nothing is matched we will fall through to the Panel
-		// API to try and validate permissions for a server.
-		if auth[1] == rt.token {
-			h(rt.AttachAccessControlHeaders(w, r, ps))
-			return
-		}
-
-		// Happens because we don't have any of the server handling code here.
-		http.Error(w, "not implemented", http.StatusNotImplemented)
-		return
-	}
-}
-
-// Returns the basic Wings index page without anything else.
-func (rt *Router) routeIndex(w http.ResponseWriter, _ *http.Request, _ httprouter.Params) {
-	fmt.Fprint(w, "Welcome!\n")
-}
-
-// Returns all of the servers that exist on the Daemon. This route is only accessible to
-// requests that include an administrative control key, otherwise a 404 is returned. This
-// authentication is handled by a middleware.
-func (rt *Router) routeAllServers(w http.ResponseWriter, _ *http.Request, _ httprouter.Params) {
-	json.NewEncoder(w).Encode(server.GetServers().All())
-}
-
-// Returns basic information about a single server found on the Daemon.
-func (rt *Router) routeServer(w http.ResponseWriter, _ *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-
-	json.NewEncoder(w).Encode(s)
-}
-
-type PowerActionRequest struct {
-	Action string `json:"action"`
-}
-
-type CreateDirectoryRequest struct {
-	Name string `json:"name"`
-	Path string `json:"path"`
-}
-
-func (pr *PowerActionRequest) IsValid() bool {
-	return pr.Action == "start" || pr.Action == "stop" || pr.Action == "kill" || pr.Action == "restart"
-}
-
-// Handles a request to control the power state of a server. If the action being passed
-// through is invalid a 404 is returned. Otherwise, a HTTP/202 Accepted response is returned
-// and the actual power action is run asynchronously so that we don't have to block the
-// request until a potentially slow operation completes.
-//
-// This is done because for the most part the Panel is using websockets to determine when
-// things are happening, so theres no reason to sit and wait for a request to finish. We'll
-// just see over the socket if something isn't working correctly.
-func (rt *Router) routeServerPower(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	dec := json.NewDecoder(r.Body)
-	var action PowerActionRequest
-
-	if err := dec.Decode(&action); err != nil {
-		// Don't flood the logs with error messages if someone sends through bad
-		// JSON data. We don't really care.
-		if err != io.EOF && err != io.ErrUnexpectedEOF {
-			zap.S().Errorw("failed to decode power action", zap.Error(err))
-		}
-
-		http.Error(w, "could not parse power action from request", http.StatusInternalServerError)
-		return
-	}
-
-	if !action.IsValid() {
-		http.NotFound(w, r)
-		return
-	}
-
-	// Because we route all of the actual bootup process to a seperate thread we need to
-	// check the suspension status here, otherwise the user will hit the endpoint and then
-	// just sit there wondering why it returns a success but nothing actually happens.
-	//
-	// We don't really care about any of the other actions at this point, they'll all result
-	// in the process being stopped, which should have happened anyways if the server is suspended.
-	if action.Action == "start" && s.Suspended {
-		http.Error(w, "server is suspended", http.StatusBadRequest)
-		return
-	}
-
-	// Pass the actual heavy processing off to a seperate thread to handle so that
-	// we can immediately return a response from the server.
-	go func(a string, s *server.Server) {
-		switch a {
-		case "start":
-			if err := s.Environment.Start(); err != nil {
-				zap.S().Errorw(
-					"encountered unexpected error starting server process",
-					zap.Error(err),
-					zap.String("server", s.Uuid),
-					zap.String("action", "start"),
-				)
-			}
-			break
-		case "stop":
-			if err := s.Environment.Stop(); err != nil {
-				zap.S().Errorw(
-					"encountered unexpected error stopping server process",
-					zap.Error(err),
-					zap.String("server", s.Uuid),
-					zap.String("action", "stop"),
-				)
-			}
-			break
-		case "restart":
-			break
-		case "kill":
-			if err := s.Environment.Terminate(os.Kill); err != nil {
-				zap.S().Errorw(
-					"encountered unexpected error killing server process",
-					zap.Error(err),
-					zap.String("server", s.Uuid),
-					zap.String("action", "kill"),
-				)
-			}
-		}
-	}(action.Action, s)
-
-	w.WriteHeader(http.StatusAccepted)
-}
-
-// Return the last 1Kb of the server log file.
-func (rt *Router) routeServerLogs(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-
-	l, _ := strconv.ParseInt(r.URL.Query().Get("size"), 10, 64)
-	if l <= 0 {
-		l = 2048
-	}
-
-	out, err := s.ReadLogfile(l)
-	if err != nil {
-		zap.S().Errorw("failed to read server log file", zap.Error(err))
-		http.Error(w, "failed to read log", http.StatusInternalServerError)
-		return
-	}
-
-	json.NewEncoder(w).Encode(struct{ Data []string `json:"data"` }{Data: out})
-}
-
-// Handle a request to get the contents of a file on the server.
-func (rt *Router) routeServerFileRead(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-
-	cleaned, err := s.Filesystem.SafePath(r.URL.Query().Get("file"))
-	if err != nil {
-		http.NotFound(w, r)
-		return
-	}
-
-	st, err := s.Filesystem.Stat(cleaned)
-	if err != nil {
-		if !os.IsNotExist(err) {
-			zap.S().Errorw("failed to stat file for reading", zap.String("path", ps.ByName("path")), zap.String("server", s.Uuid), zap.Error(err))
-
-			http.Error(w, "failed to stat file", http.StatusInternalServerError)
-			return
-		}
-
-		http.NotFound(w, r)
-		return
-	}
-
-	f, err := os.OpenFile(cleaned, os.O_RDONLY, 0)
-	if err != nil {
-		if !os.IsNotExist(err) {
-			zap.S().Errorw("failed to open file for reading", zap.String("path", ps.ByName("path")), zap.String("server", s.Uuid), zap.Error(err))
-		}
-
-		http.Error(w, "failed to open file", http.StatusInternalServerError)
-		return
-	}
-	defer f.Close()
-
-	w.Header().Set("X-Mime-Type", st.Mimetype)
-	w.Header().Set("Content-Length", strconv.Itoa(int(st.Info.Size())))
-
-	// If a download parameter is included in the URL go ahead and attach the necessary headers
-	// so that the file can be downloaded.
-	if r.URL.Query().Get("download") != "" {
-		w.Header().Set("Content-Disposition", "attachment; filename="+st.Info.Name())
-		w.Header().Set("Content-Type", "application/octet-stream")
-	}
-
-	bufio.NewReader(f).WriteTo(w)
-}
-
-// Lists the contents of a directory.
-func (rt *Router) routeServerListDirectory(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-
-	stats, err := s.Filesystem.ListDirectory(r.URL.Query().Get("directory"))
-	if os.IsNotExist(err) {
-		http.NotFound(w, r)
-		return
-	} else if err != nil {
-		zap.S().Errorw("failed to list contents of directory", zap.String("server", s.Uuid), zap.String("path", ps.ByName("path")), zap.Error(err))
-
-		http.Error(w, "failed to list directory", http.StatusInternalServerError)
-		return
-	}
-
-	json.NewEncoder(w).Encode(stats)
-}
-
-// Writes a file to the system for the server.
-func (rt *Router) routeServerWriteFile(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-
-	p := r.URL.Query().Get("file")
-	defer r.Body.Close()
-	err := s.Filesystem.Writefile(p, r.Body)
-
-	if err != nil {
-		zap.S().Errorw("failed to write file to directory", zap.String("server", s.Uuid), zap.String("path", p), zap.Error(err))
-
-		http.Error(w, "failed to write file to directory", http.StatusInternalServerError)
-		return
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-// Creates a new directory for the server.
-func (rt *Router) routeServerCreateDirectory(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	dec := json.NewDecoder(r.Body)
-	var data CreateDirectoryRequest
-
-	if err := dec.Decode(&data); err != nil {
-		// Don't flood the logs with error messages if someone sends through bad
-		// JSON data. We don't really care.
-		if err != io.EOF && err != io.ErrUnexpectedEOF {
-			zap.S().Errorw("failed to decode directory creation data", zap.Error(err))
-		}
-
-		http.Error(w, "could not parse data in request", http.StatusUnprocessableEntity)
-		return
-	}
-
-	if err := s.Filesystem.CreateDirectory(data.Name, data.Path); err != nil {
-		zap.S().Errorw("failed to create directory for server", zap.String("server", s.Uuid), zap.Error(err))
-
-		http.Error(w, "an error was encountered while creating the directory", http.StatusInternalServerError)
-		return
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-func (rt *Router) routeServerRenameFile(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	data := rt.ReaderToBytes(r.Body)
-	oldPath, _ := jsonparser.GetString(data, "rename_from")
-	newPath, _ := jsonparser.GetString(data, "rename_to")
-
-	if oldPath == "" || newPath == "" {
-		http.Error(w, "invalid paths provided; did you forget to provide an old path and new path?", http.StatusUnprocessableEntity)
-		return
-	}
-
-	if err := s.Filesystem.Rename(oldPath, newPath); err != nil {
-		zap.S().Errorw("failed to rename file on server", zap.String("server", s.Uuid), zap.Error(err))
-
-		http.Error(w, "an error occurred while renaming the file", http.StatusInternalServerError)
-		return
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-func (rt *Router) routeServerCopyFile(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	data := rt.ReaderToBytes(r.Body)
-	loc, _ := jsonparser.GetString(data, "location")
-
-	if err := s.Filesystem.Copy(loc); err != nil {
-		zap.S().Errorw("error copying file for server", zap.String("server", s.Uuid), zap.Error(err))
-
-		http.Error(w, "an error occurred while copying the file", http.StatusInternalServerError)
-		return
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-func (rt *Router) routeServerDeleteFile(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	data := rt.ReaderToBytes(r.Body)
-	loc, _ := jsonparser.GetString(data, "location")
-
-	if err := s.Filesystem.Delete(loc); err != nil {
-		zap.S().Errorw("failed to delete a file or directory for server", zap.String("server", s.Uuid), zap.Error(err))
-
-		http.Error(w, "an error occurred while trying to delete a file or directory", http.StatusInternalServerError)
-		return
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-func (rt *Router) routeServerSendCommand(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	if running, err := s.Environment.IsRunning(); !running || err != nil {
-		http.Error(w, "cannot send commands to a stopped instance", http.StatusBadGateway)
-		return
-	}
-
-	data := rt.ReaderToBytes(r.Body)
-	commands, dt, _, _ := jsonparser.Get(data, "commands")
-	if dt != jsonparser.Array {
-		http.Error(w, "commands must be an array of strings", http.StatusUnprocessableEntity)
-		return
-	}
-
-	for _, command := range commands {
-		if err := s.Environment.SendCommand(string(command)); err != nil {
-			zap.S().Warnw("failed to send command to server", zap.Any("command", command), zap.Error(err))
-			return
-		}
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-func (rt *Router) routeServerUpdate(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	data := rt.ReaderToBytes(r.Body)
-	if err := s.UpdateDataStructure(data, true); err != nil {
-		zap.S().Errorw("failed to update a server's data structure", zap.String("server", s.Uuid), zap.Error(err))
-
-		http.Error(w, "failed to update data structure", http.StatusInternalServerError)
-		return
-	}
-
-	w.WriteHeader(http.StatusNoContent)
-}
-
-func (rt *Router) routeCreateServer(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	defer r.Body.Close()
-
-	inst, err := installer.New(rt.ReaderToBytes(r.Body))
-
-	if err != nil {
-		zap.S().Warnw("failed to validate the received data", zap.Error(err))
-
-		http.Error(w, "failed to validate data", http.StatusUnprocessableEntity)
-		return
-	}
-
-	// Plop that server instance onto the request so that it can be referenced in
-	// requests from here-on out.
-	server.GetServers().Add(inst.Server())
-
-	// Begin the installation process in the background to not block the request
-	// cycle. If there are any errors they will be logged and communicated back
-	// to the Panel where a reinstall may take place.
-	zap.S().Infow("beginning installation process for server", zap.String("server", inst.Uuid()))
-	go inst.Execute()
-
-	w.WriteHeader(http.StatusAccepted)
-}
-
-func (rt *Router) routeSystemInformation(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	defer r.Body.Close()
-
-	s, err := GetSystemInformation()
-	if err != nil {
-		zap.S().Errorw("failed to retrieve system information", zap.Error(errors.WithStack(err)))
-
-		http.Error(w, "failed to retrieve information", http.StatusInternalServerError)
-		return
-	}
-
-	json.NewEncoder(w).Encode(s)
-}
-
-func (rt *Router) routeServerDelete(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	s := rt.GetServer(ps.ByName("server"))
-	defer r.Body.Close()
-
-	// Immediately suspend the server to prevent a user from attempting
-	// to start it while this process is running.
-	s.Suspended = true
-
-	// Destroy the environment; in Docker this will handle a running container and
-	// forcibly terminate it before removing the container, so we do not need to handle
-	// that here.
-	if err := s.Environment.Destroy(); err != nil {
-		zap.S().Errorw("failed to destroy server environment", zap.Error(errors.WithStack(err)))
-
-		http.Error(w, "failed to destroy server environment", http.StatusInternalServerError)
-		return
-	}
-
-	// Once the environment is terminated, remove the server files from the system. This is
-	// done in a seperate process since failure is not the end of the world and can be
-	// manually cleaned up after the fact.
-	//
-	// In addition, servers with large amounts of files can take some time to finish deleting
-	// so we don't want to block the HTTP call while waiting on this.
-	go func(p string) {
-		if err := os.RemoveAll(p); err != nil {
-			zap.S().Warnw("failed to remove server files on deletion", zap.String("path", p), zap.Error(errors.WithStack(err)))
-		}
-	}(s.Filesystem.Path())
-
-	var uuid = s.Uuid
-	server.GetServers().Remove(func(s2 *server.Server) bool {
-		return s2.Uuid == uuid
-	})
-
-	s = nil
-
-	// Remove the configuration file stored on the Daemon for this server.
-	go func(u string) {
-		if err := os.Remove("data/servers/" + u + ".yml"); err != nil {
-			zap.S().Warnw("failed to delete server configuration file on deletion", zap.String("server", u), zap.Error(errors.WithStack(err)))
-		}
-	}(uuid)
-
-	w.WriteHeader(http.StatusAccepted)
-}
-
-func (rt *Router) ReaderToBytes(r io.Reader) []byte {
-	buf := bytes.Buffer{}
-	buf.ReadFrom(r)
-
-	return buf.Bytes()
-}
-
-// Configures the router and all of the associated routes.
-func (rt *Router) ConfigureRouter() *httprouter.Router {
-	router := httprouter.New()
-
-	router.OPTIONS("/api/system", func(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-		rt.AttachAccessControlHeaders(w, r, ps)
-	})
-
-	router.GET("/", rt.routeIndex)
-	router.GET("/api/system", rt.AuthenticateToken(rt.routeSystemInformation))
-	router.GET("/api/servers", rt.AuthenticateToken(rt.routeAllServers))
-	router.GET("/api/servers/:server", rt.AuthenticateRequest(rt.routeServer))
-	router.GET("/api/servers/:server/ws", rt.AuthenticateServer(rt.routeWebsocket))
-	router.GET("/api/servers/:server/logs", rt.AuthenticateRequest(rt.routeServerLogs))
-	router.GET("/api/servers/:server/files/contents", rt.AuthenticateRequest(rt.routeServerFileRead))
-	router.GET("/api/servers/:server/files/list-directory", rt.AuthenticateRequest(rt.routeServerListDirectory))
-	router.PUT("/api/servers/:server/files/rename", rt.AuthenticateRequest(rt.routeServerRenameFile))
-	router.POST("/api/servers", rt.AuthenticateToken(rt.routeCreateServer));
-	router.POST("/api/servers/:server/files/copy", rt.AuthenticateRequest(rt.routeServerCopyFile))
-	router.POST("/api/servers/:server/files/write", rt.AuthenticateRequest(rt.routeServerWriteFile))
-	router.POST("/api/servers/:server/files/create-directory", rt.AuthenticateRequest(rt.routeServerCreateDirectory))
-	router.POST("/api/servers/:server/files/delete", rt.AuthenticateRequest(rt.routeServerDeleteFile))
-	router.POST("/api/servers/:server/power", rt.AuthenticateRequest(rt.routeServerPower))
-	router.POST("/api/servers/:server/commands", rt.AuthenticateRequest(rt.routeServerSendCommand))
-	router.PATCH("/api/servers/:server", rt.AuthenticateRequest(rt.routeServerUpdate))
-	router.DELETE("/api/servers/:server", rt.AuthenticateRequest(rt.routeServerDelete))
-
-	return router
-}

installer/errors.go

@@ -0,0 +1,19 @@
+package installer
+
+type validationError struct {
+	msg string
+}
+
+func (e *validationError) Error() string {
+	return e.msg
+}
+
+func IsValidationError(err error) bool {
+	_, ok := err.(*validationError)
+
+	return ok
+}
+
+func NewValidationError(msg string) error {
+	return &validationError{msg: msg}
+}

installer/installer.go

@@ -2,12 +2,15 @@ package installer
 
 import (
 	"encoding/json"
+	"github.com/apex/log"
 	"github.com/asaskevich/govalidator"
 	"github.com/buger/jsonparser"
 	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/api"
 	"github.com/pterodactyl/wings/config"
 	"github.com/pterodactyl/wings/server"
-	"go.uber.org/zap"
+	"os"
+	"path"
 )
 
 type Installer struct {
@@ -19,11 +22,11 @@ type Installer struct {
 // calling Execute().
 func New(data []byte) (*Installer, error) {
 	if !govalidator.IsUUIDv4(getString(data, "uuid")) {
-		return nil, errors.New("uuid provided was not in a valid format")
+		return nil, NewValidationError("uuid provided was not in a valid format")
 	}
 
 	if !govalidator.IsUUIDv4(getString(data, "service", "egg")) {
-		return nil, errors.New("service egg provided was not in a valid format")
+		return nil, NewValidationError("service egg provided was not in a valid format")
 	}
 
 	s := &server.Server{
@@ -38,14 +41,13 @@ func New(data []byte) (*Installer, error) {
 			IoWeight:    uint16(getInt(data, "build", "io")),
 			CpuLimit:    getInt(data, "build", "cpu"),
 			DiskSpace:   getInt(data, "build", "disk"),
+			Threads:     getString(data, "build", "threads"),
 		},
 		Allocations: server.Allocations{
 			Mappings: make(map[string][]int),
 		},
 	}
 
-	s.Init()
-
 	s.Allocations.DefaultMapping.Ip = getString(data, "allocations", "default", "ip")
 	s.Allocations.DefaultMapping.Port = int(getInt(data, "allocations", "default", "port"))
 
@@ -71,9 +73,13 @@ func New(data []byte) (*Installer, error) {
 
 	s.Container.Image = getString(data, "container", "image")
 
-	b, err := s.WriteConfigurationToDisk()
-	if err != nil {
-		return nil, err
+	c, rerr, err := api.NewRequester().GetServerConfiguration(s.Uuid)
+	if err != nil || rerr != nil {
+		if err != nil {
+			return nil, errors.WithStack(err)
+		}
+
+		return nil, errors.New(rerr.String())
 	}
 
 	// Destroy the temporary server instance.
@@ -81,7 +87,7 @@ func New(data []byte) (*Installer, error) {
 
 	// Create a new server instance using the configuration we wrote to the disk
 	// so that everything gets instantiated correctly on the struct.
-	s2, err := server.FromConfiguration(b, &config.Get().System)
+	s2, err := server.FromConfiguration(c)
 
 	return &Installer{
 		server: s2,
@@ -102,13 +108,27 @@ func (i *Installer) Server() *server.Server {
 // associated installation process based on the parameters passed through for
 // the server instance.
 func (i *Installer) Execute() {
-	zap.S().Debugw("creating required environment for server instance", zap.String("server", i.Uuid()))
-	if err := i.server.Environment.Create(); err != nil {
-		zap.S().Errorw("failed to create environment for server", zap.String("server", i.Uuid()), zap.Error(err))
+	p := path.Join(config.Get().System.Data, i.Uuid())
+	l := log.WithFields(log.Fields{"server": i.Uuid(), "process": "installer"})
+
+	l.WithField("path", p).Debug("creating required server data directory")
+	if err := os.MkdirAll(p, 0755); err != nil {
+		l.WithFields(log.Fields{"path": p, "error": errors.WithStack(err)}).Error("failed to create server data directory")
 		return
 	}
 
-	zap.S().Debugw("created environment for server during install process", zap.String("server", i.Uuid()))
+	if err := os.Chown(p, config.Get().System.User.Uid, config.Get().System.User.Gid); err != nil {
+		l.WithField("error", errors.WithStack(err)).Error("failed to chown server data directory")
+		return
+	}
+
+	l.Debug("creating required environment for server instance")
+	if err := i.server.Environment.Create(); err != nil {
+		l.WithField("error", err).Error("failed to create environment for server")
+		return
+	}
+
+	l.Info("successfully created environment for server during install process")
 }
 
 // Returns a string value from the JSON data provided.

loggers/cli/cli.go

@@ -0,0 +1,93 @@
+package cli
+
+import (
+	"fmt"
+	"github.com/apex/log"
+	"github.com/apex/log/handlers/cli"
+	color2 "github.com/fatih/color"
+	"github.com/mattn/go-colorable"
+	"github.com/pkg/errors"
+	"io"
+	"os"
+	"sync"
+	"time"
+)
+
+var Default = New(os.Stderr)
+
+var bold = color2.New(color2.Bold)
+
+var Strings = [...]string{
+	log.DebugLevel: "DEBUG",
+	log.InfoLevel:  " INFO",
+	log.WarnLevel:  " WARN",
+	log.ErrorLevel: "ERROR",
+	log.FatalLevel: "FATAL",
+}
+
+type Handler struct {
+	mu      sync.Mutex
+	Writer  io.Writer
+	Padding int
+}
+
+func New(w io.Writer) *Handler {
+	if f, ok := w.(*os.File); ok {
+		return &Handler{Writer: colorable.NewColorable(f), Padding: 2}
+	}
+
+	return &Handler{Writer: w, Padding: 2}
+}
+
+type tracer interface {
+	StackTrace() errors.StackTrace
+}
+
+// HandleLog implements log.Handler.
+func (h *Handler) HandleLog(e *log.Entry) error {
+	color := cli.Colors[e.Level]
+	level := Strings[e.Level]
+	names := e.Fields.Names()
+
+	h.mu.Lock()
+	defer h.mu.Unlock()
+
+	color.Fprintf(h.Writer, "%s: [%s] %-25s", bold.Sprintf("%*s", h.Padding+1, level), time.Now().Format(time.StampMilli), e.Message)
+
+	for _, name := range names {
+		if name == "source" {
+			continue
+		}
+
+		fmt.Fprintf(h.Writer, " %s=%v", color.Sprint(name), e.Fields.Get(name))
+	}
+
+	fmt.Fprintln(h.Writer)
+
+	for _, name := range names {
+		if name != "error" {
+			continue
+		}
+
+		if err, ok := e.Fields.Get("error").(error); ok {
+			var br = color2.New(color2.Bold, color2.FgRed)
+
+			if e, ok := errors.Cause(err).(tracer); ok {
+				st := e.StackTrace()
+
+				l := len(st)
+				if l > 5 {
+					l = 5
+				}
+
+				fmt.Fprintf(h.Writer, "\n%s%+v\n\n", br.Sprintf("Stacktrace:"), st[0:l])
+			} else {
+				fmt.Fprintf(h.Writer, "\n%s\n%+v\n\n", br.Sprintf("Stacktrace:"), err)
+			}
+		} else {
+			fmt.Printf("\n\nINVALID ERROR\n\n")
+		}
+	}
+
+	return nil
+}

parser/helpers.go

@@ -1,7 +1,9 @@
 package parser
 
 import (
+	"bytes"
 	"github.com/Jeffail/gabs/v2"
+	"github.com/apex/log"
 	"github.com/buger/jsonparser"
 	"github.com/iancoleman/strcase"
 	"github.com/pkg/errors"
@@ -44,32 +46,20 @@ func readFileBytes(path string) ([]byte, error) {
 	return ioutil.ReadAll(file)
 }
 
-// Helper function to set the value of the JSON key item based on the jsonparser value
-// type returned.
-func setPathway(c *gabs.Container, path string, value []byte, vt jsonparser.ValueType) error {
-	v := getKeyValue(value, vt)
-
-	_, err := c.SetP(v, path)
-
-	return err
-}
-
 // Gets the value of a key based on the value type defined.
-func getKeyValue(value []byte, vt jsonparser.ValueType) interface{} {
-	switch vt {
-	case jsonparser.Number:
-		{
-			v, _ := strconv.Atoi(string(value))
-			return v
-		}
-	case jsonparser.Boolean:
-		{
-			v, _ := strconv.ParseBool(string(value))
-			return v
-		}
-	default:
-		return string(value)
+func (cfr *ConfigurationFileReplacement) getKeyValue(value []byte) interface{} {
+	if cfr.ReplaceWith.Type() == jsonparser.Boolean {
+		v, _ := strconv.ParseBool(string(value))
+		return v
 	}
+
+	// Try to parse into an int, if this fails just ignore the error and continue
+	// through, returning the string.
+	if v, err := strconv.Atoi(string(value)); err == nil {
+		return v
+	}
+
+	return string(value)
 }
 
 // Iterate over an unstructured JSON/YAML/etc. interface and set all of the required
@@ -80,7 +70,9 @@ func getKeyValue(value []byte, vt jsonparser.ValueType) interface{} {
 // configurations per-world (such as Spigot and Bungeecord) where we'll need to make
 // adjustments to the bind address for the user.
 //
-// This does not currently support nested matches. container.*.foo.*.bar will not work.
+// This does not currently support nested wildcard matches. For example, foo.*.bar
+// will work, however foo.*.bar.*.baz will not, since we'll only be splitting at the
+// first wildcard, and not subsequent ones.
 func (f *ConfigurationFile) IterateOverJson(data []byte) (*gabs.Container, error) {
 	parsed, err := gabs.ParseJSON(data)
 	if err != nil {
@@ -88,7 +80,7 @@ func (f *ConfigurationFile) IterateOverJson(data []byte) (*gabs.Container, error
 	}
 
 	for _, v := range f.Replace {
-		value, dt, err := f.LookupConfigurationValue(v)
+		value, err := f.LookupConfigurationValue(v)
 		if err != nil {
 			return nil, err
 		}
@@ -104,12 +96,12 @@ func (f *ConfigurationFile) IterateOverJson(data []byte) (*gabs.Container, error
 			// If the child is a null value, nothing will happen. Seems reasonable as of the
 			// time this code is being written.
 			for _, child := range parsed.Path(strings.Trim(parts[0], ".")).Children() {
-				if err := setPathway(child, strings.Trim(parts[1], "."), value, dt); err != nil {
+				if err := v.SetAtPathway(child, strings.Trim(parts[1], "."), []byte(value)); err != nil {
 					return nil, err
 				}
 			}
 		} else {
-			if err = setPathway(parsed, v.Match, value, dt); err != nil {
+			if err = v.SetAtPathway(parsed, v.Match, []byte(value)); err != nil {
 				return nil, err
 			}
 		}
@@ -118,41 +110,79 @@ func (f *ConfigurationFile) IterateOverJson(data []byte) (*gabs.Container, error
 	return parsed, nil
 }
 
+// Sets the value at a specific pathway, but checks if we were looking for a specific
+// value or not before doing it.
+func (cfr *ConfigurationFileReplacement) SetAtPathway(c *gabs.Container, path string, value []byte) error {
+	if cfr.IfValue != "" {
+		// If this is a regex based matching, we need to get a little more creative since
+		// we're only going to replacing part of the string, and not the whole thing.
+		if c.Exists(path) && strings.HasPrefix(cfr.IfValue, "regex:") {
+			// We're doing some regex here.
+			r, err := regexp.Compile(strings.TrimPrefix(cfr.IfValue, "regex:"))
+			if err != nil {
+				log.WithFields(log.Fields{"if_value": strings.TrimPrefix(cfr.IfValue, "regex:"), "error": err}).
+					Warn("configuration if_value using invalid regexp, cannot perform replacement")
+
+				return nil
+			}
+
+			// If the path exists and there is a regex match, go ahead and attempt the replacement
+			// using the value we got from the key. This will only replace the one match.
+			v := strings.Trim(string(c.Path(path).Bytes()), "\"")
+			if r.Match([]byte(v)) {
+				_, err := c.SetP(r.ReplaceAllString(v, string(value)), path)
+
+				return err
+			}
+
+			return nil
+		} else {
+			if !c.Exists(path) || (c.Exists(path) && !bytes.Equal(c.Bytes(), []byte(cfr.IfValue))) {
+				return nil
+			}
+		}
+	}
+
+	_, err := c.SetP(cfr.getKeyValue(value), path)
+
+	return err
+}
+
 // Looks up a configuration value on the Daemon given a dot-notated syntax.
-func (f *ConfigurationFile) LookupConfigurationValue(cfr ConfigurationFileReplacement) ([]byte, jsonparser.ValueType, error) {
-	if !configMatchRegex.Match([]byte(cfr.Value)) {
-		return []byte(cfr.Value), cfr.ValueType, nil
+func (f *ConfigurationFile) LookupConfigurationValue(cfr ConfigurationFileReplacement) (string, error) {
+	// If this is not something that we can do a regex lookup on then just continue
+	// on our merry way. If the value isn't a string, we're not going to be doing anything
+	// with it anyways.
+	if cfr.ReplaceWith.Type() != jsonparser.String || !configMatchRegex.Match(cfr.ReplaceWith.Value()) {
+		return cfr.ReplaceWith.String(), nil
 	}
 
 	// If there is a match, lookup the value in the configuration for the Daemon. If no key
 	// is found, just return the string representation, otherwise use the value from the
 	// daemon configuration here.
 	huntPath := configMatchRegex.ReplaceAllString(
-		configMatchRegex.FindString(cfr.Value), "$1",
+		configMatchRegex.FindString(cfr.ReplaceWith.String()), "$1",
 	)
 
 	var path []string
-	// The camel casing is important here, the configuration for the Daemon does not use
-	// JSON, and as such all of the keys will be generated in CamelCase format, rather than
-	// the expected snake_case from the old Daemon.
 	for _, value := range strings.Split(huntPath, ".") {
-		path = append(path, strcase.ToCamel(value))
+		path = append(path, strcase.ToSnake(value))
 	}
 
 	// Look for the key in the configuration file, and if found return that value to the
 	// calling function.
-	match, dt, _, err := jsonparser.Get(f.configuration, path...)
+	match, _, _, err := jsonparser.Get(f.configuration, path...)
 	if err != nil {
 		if err != jsonparser.KeyPathNotFoundError {
-			return match, dt, errors.WithStack(err)
+			return string(match), errors.WithStack(err)
 		}
 
+		log.WithFields(log.Fields{"path": path, "filename": f.FileName}).Debug("attempted to load a configuration value that does not exist")
+
 		// If there is no key, keep the original value intact, that way it is obvious there
 		// is a replace issue at play.
-		return []byte(cfr.Value), cfr.ValueType, nil
+		return string(match), nil
 	} else {
-		replaced := []byte(configMatchRegex.ReplaceAllString(cfr.Value, string(match)))
-
-		return replaced, cfr.ValueType, nil
+		return configMatchRegex.ReplaceAllString(cfr.ReplaceWith.String(), string(match)), nil
 	}
 }

parser/parser.go

@@ -3,17 +3,18 @@ package parser
 import (
 	"bufio"
 	"encoding/json"
-	"fmt"
+	"github.com/apex/log"
 	"github.com/beevik/etree"
 	"github.com/buger/jsonparser"
-	"github.com/ghodss/yaml"
+	"github.com/icza/dyno"
 	"github.com/magiconair/properties"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/config"
-	"go.uber.org/zap"
 	"gopkg.in/ini.v1"
+	"gopkg.in/yaml.v2"
 	"io/ioutil"
 	"os"
+	"regexp"
 	"strings"
 )
 
@@ -29,6 +30,10 @@ const (
 
 type ConfigurationParser string
 
+func (cp ConfigurationParser) String() string {
+	return string(cp)
+}
+
 // Defines a configuration file for the server startup. These will be looped over
 // and modified before the server finishes booting.
 type ConfigurationFile struct {
@@ -41,31 +46,83 @@ type ConfigurationFile struct {
 	configuration []byte
 }
 
-// Defines a single find/replace instance for a given server configuration file.
-type ConfigurationFileReplacement struct {
-	Match     string               `json:"match"`
-	Value     string               `json:"value"`
-	ValueType jsonparser.ValueType `json:"-"`
-}
-
-func (cfr *ConfigurationFileReplacement) UnmarshalJSON(data []byte) error {
-	if m, err := jsonparser.GetString(data, "match"); err != nil {
+// Custom unmarshaler for configuration files. If there is an error while parsing out the
+// replacements, don't fail the entire operation, just log a global warning so someone can
+// find the issue, and return an empty array of replacements.
+//
+// I imagine people will notice configuration replacement isn't working correctly and then
+// the logs should help better expose that issue.
+func (f *ConfigurationFile) UnmarshalJSON(data []byte) error {
+	var m map[string]*json.RawMessage
+	if err := json.Unmarshal(data, &m); err != nil {
 		return err
-	} else {
-		cfr.Match = m
 	}
 
-	if v, dt, _, err := jsonparser.Get(data, "value"); err != nil {
+	if err := json.Unmarshal(*m["file"], &f.FileName); err != nil {
 		return err
-	} else {
-		if dt != jsonparser.String && dt != jsonparser.Number && dt != jsonparser.Boolean {
-			return errors.New(
-				fmt.Sprintf("cannot parse JSON: received unexpected replacement value type: %d", dt),
-			)
+	}
+
+	if err := json.Unmarshal(*m["parser"], &f.Parser); err != nil {
+		return err
+	}
+
+	if err := json.Unmarshal(*m["replace"], &f.Replace); err != nil {
+		log.WithField("file", f.FileName).WithField("error", err).Warn("failed to unmarshal configuration file replacement")
+
+		f.Replace = []ConfigurationFileReplacement{}
+	}
+
+	return nil
+}
+
+// Regex to match paths such as foo[1].bar[2] and convert them into a format that
+// gabs can work with, such as foo.1.bar.2 in this case. This is applied when creating
+// the struct for the configuration file replacements.
+var cfrMatchReplacement = regexp.MustCompile(`\[(\d+)]`)
+
+// Defines a single find/replace instance for a given server configuration file.
+type ConfigurationFileReplacement struct {
+	Match       string       `json:"match"`
+	IfValue     string       `json:"if_value"`
+	ReplaceWith ReplaceValue `json:"replace_with"`
+}
+
+// Handles unmarshaling the JSON representation into a struct that provides more useful
+// data to this functionality.
+func (cfr *ConfigurationFileReplacement) UnmarshalJSON(data []byte) error {
+	m, err := jsonparser.GetString(data, "match")
+	if err != nil {
+		return err
+	}
+
+	// See comment on the replacement regex to understand what exactly this is doing.
+	cfr.Match = cfrMatchReplacement.ReplaceAllString(m, ".$1")
+
+	iv, err := jsonparser.GetString(data, "if_value")
+	// We only check keypath here since match & replace_with should be present on all of
+	// them, however if_value is optional.
+	if err != nil && err != jsonparser.KeyPathNotFoundError {
+		return err
+	}
+	cfr.IfValue = iv
+
+	rw, dt, _, err := jsonparser.Get(data, "replace_with")
+	if err != nil {
+		if err != jsonparser.KeyPathNotFoundError {
+			return err
 		}
 
-		cfr.Value = string(v)
-		cfr.ValueType = dt
+		// Okay, likely dealing with someone who forgot to upgrade their eggs, so in
+		// that case, fallback to using the old key which was "value".
+		rw, dt, _, err = jsonparser.Get(data, "value")
+		if err != nil {
+			return err
+		}
+	}
+
+	cfr.ReplaceWith = ReplaceValue{
+		value:     rw,
+		valueType: dt,
 	}
 
 	return nil
@@ -74,10 +131,13 @@ func (cfr *ConfigurationFileReplacement) UnmarshalJSON(data []byte) error {
 // Parses a given configuration file and updates all of the values within as defined
 // in the API response from the Panel.
 func (f *ConfigurationFile) Parse(path string, internal bool) error {
-	zap.S().Debugw("parsing configuration file", zap.String("path", path), zap.String("parser", string(f.Parser)))
+	log.WithField("path", path).WithField("parser", f.Parser.String()).Debug("parsing server configuration file")
 
-	mb, _ := json.Marshal(config.Get())
-	f.configuration = mb
+	if mb, err := json.Marshal(config.Get()); err != nil {
+		return err
+	} else {
+		f.configuration = mb
+	}
 
 	var err error
 
@@ -139,7 +199,7 @@ func (f *ConfigurationFile) parseXmlFile(path string) error {
 	}
 
 	for i, replacement := range f.Replace {
-		value, _, err := f.LookupConfigurationValue(replacement)
+		value, err := f.LookupConfigurationValue(replacement)
 		if err != nil {
 			return err
 		}
@@ -176,13 +236,13 @@ func (f *ConfigurationFile) parseXmlFile(path string) error {
 
 		// Iterate over the elements we found and update their values.
 		for _, element := range doc.FindElements(path) {
-			if xmlValueMatchRegex.Match(value) {
-				k := xmlValueMatchRegex.ReplaceAllString(string(value), "$1")
-				v := xmlValueMatchRegex.ReplaceAllString(string(value), "$2")
+			if xmlValueMatchRegex.MatchString(value) {
+				k := xmlValueMatchRegex.ReplaceAllString(value, "$1")
+				v := xmlValueMatchRegex.ReplaceAllString(value, "$2")
 
 				element.CreateAttr(k, v)
 			} else {
-				element.SetText(string(value))
+				element.SetText(value)
 			}
 		}
 	}
@@ -199,6 +259,11 @@ func (f *ConfigurationFile) parseXmlFile(path string) error {
 	// Ensure the XML is indented properly.
 	doc.Indent(2)
 
+	// Truncate the file before attempting to write the changes.
+	if err := os.Truncate(path, 0); err != nil {
+		return err
+	}
+
 	// Write the XML to the file.
 	_, err = doc.WriteTo(file)
 
@@ -208,12 +273,13 @@ func (f *ConfigurationFile) parseXmlFile(path string) error {
 // Parses an ini file.
 func (f *ConfigurationFile) parseIniFile(path string) error {
 	// Ini package can't handle a non-existent file, so handle that automatically here
-	// by creating it if not exists.
-	file, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0644);
+	// by creating it if not exists. Then, immediately close the file since we will use
+	// other methods to write the new contents.
+	file, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0644)
 	if err != nil {
 		return err
 	}
-	defer file.Close()
+	file.Close()
 
 	cfg, err := ini.Load(path)
 	if err != nil {
@@ -223,7 +289,7 @@ func (f *ConfigurationFile) parseIniFile(path string) error {
 	for _, replacement := range f.Replace {
 		path := strings.SplitN(replacement.Match, ".", 2)
 
-		value, _, err := f.LookupConfigurationValue(replacement)
+		value, err := f.LookupConfigurationValue(replacement)
 		if err != nil {
 			return err
 		}
@@ -248,19 +314,15 @@ func (f *ConfigurationFile) parseIniFile(path string) error {
 		// If the key exists in the file go ahead and set the value, otherwise try to
 		// create it in the section.
 		if s.HasKey(k) {
-			s.Key(k).SetValue(string(value))
+			s.Key(k).SetValue(value)
 		} else {
-			if _, err := s.NewKey(k, string(value)); err != nil {
+			if _, err := s.NewKey(k, value); err != nil {
 				return err
 			}
 		}
 	}
 
-	if _, err := cfg.WriteTo(file); err != nil {
-		return err
-	}
-
-	return nil
+	return cfg.SaveTo(path)
 }
 
 // Parses a json file updating any matching key/value pairs. If a match is not found, the
@@ -289,10 +351,15 @@ func (f *ConfigurationFile) parseYamlFile(path string) error {
 		return err
 	}
 
+	i := make(map[string]interface{})
+	if err := yaml.Unmarshal(b, &i); err != nil {
+		return err
+	}
+
 	// Unmarshal the yaml data into a JSON interface such that we can work with
 	// any arbitrary data structure. If we don't do this, I can't use gabs which
 	// makes working with unknown JSON signficiantly easier.
-	jsonBytes, err := yaml.YAMLToJSON(b)
+	jsonBytes, err := json.Marshal(dyno.ConvertMapI2MapS(i))
 	if err != nil {
 		return err
 	}
@@ -305,7 +372,7 @@ func (f *ConfigurationFile) parseYamlFile(path string) error {
 	}
 
 	// Remarshal the JSON into YAML format before saving it back to the disk.
-	marshaled, err := yaml.JSONToYAML(data.Bytes())
+	marshaled, err := yaml.Marshal(data.Data())
 	if err != nil {
 		return err
 	}
@@ -336,7 +403,7 @@ func (f *ConfigurationFile) parseTextFile(path string) error {
 			}
 
 			hasReplaced = true
-			t = strings.Replace(t, replace.Match, replace.Value, 1)
+			t = strings.Replace(t, replace.Match, replace.ReplaceWith.String(), 1)
 		}
 
 		// If there was a replacement that occurred on this specific line, do a write to the file
@@ -364,17 +431,25 @@ func (f *ConfigurationFile) parsePropertiesFile(path string) error {
 	}
 
 	for _, replace := range f.Replace {
-		data, _, err := f.LookupConfigurationValue(replace)
+		data, err := f.LookupConfigurationValue(replace)
 		if err != nil {
 			return err
 		}
 
-		if _, _, err := p.Set(replace.Match, string(data)); err != nil {
+		v, ok := p.Get(replace.Match)
+		// Don't attempt to replace the value if we're looking for a specific value and
+		// it does not match. If there was no match at all in the file for this key but
+		// we're doing an IfValue match, do nothing.
+		if replace.IfValue != "" && (!ok || (ok && v != replace.IfValue)) {
+			continue
+		}
+
+		if _, _, err := p.Set(replace.Match, data); err != nil {
 			return err
 		}
 	}
 
-	w, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0644)
+	w, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
 	if err != nil {
 		return err
 	}

parser/value.go

@@ -0,0 +1,24 @@
+package parser
+
+import (
+	"github.com/buger/jsonparser"
+)
+
+type ReplaceValue struct {
+	value     []byte
+	valueType jsonparser.ValueType `json:"-"`
+}
+
+func (cv *ReplaceValue) Value() []byte {
+	return cv.value
+}
+
+func (cv *ReplaceValue) String() string {
+	str, _ := jsonparser.ParseString(cv.value)
+
+	return str
+}
+
+func (cv *ReplaceValue) Type() jsonparser.ValueType {
+	return cv.valueType
+}

router/error.go

@@ -0,0 +1,99 @@
+package router
+
+import (
+	"fmt"
+	"github.com/apex/log"
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/server"
+	"net/http"
+	"os"
+)
+
+type RequestError struct {
+	Err     error
+	Uuid    string
+	Message string
+	server  *server.Server
+}
+
+// Generates a new tracked error, which simply tracks the specific error that
+// is being passed in, and also assigned a UUID to the error so that it can be
+// cross referenced in the logs.
+func TrackedError(err error) *RequestError {
+	return &RequestError{
+		Err:     err,
+		Uuid:    uuid.Must(uuid.NewRandom()).String(),
+		Message: "",
+	}
+}
+
+// Same as TrackedError, except this will also attach the server instance that
+// generated this server for the purposes of logging.
+func TrackedServerError(err error, s *server.Server) *RequestError {
+	return &RequestError{
+		Err:     err,
+		Uuid:    uuid.Must(uuid.NewRandom()).String(),
+		Message: "",
+		server:  s,
+	}
+}
+
+func (e *RequestError) logger() *log.Entry {
+	if e.server != nil {
+		return e.server.Log().WithField("error_id", e.Uuid)
+	}
+
+	return log.WithField("error_id", e.Uuid)
+}
+
+// Sets the output message to display to the user in the error.
+func (e *RequestError) SetMessage(msg string) *RequestError {
+	e.Message = msg
+	return e
+}
+
+// Aborts the request with the given status code, and responds with the error. This
+// will also include the error UUID in the output so that the user can report that
+// and link the response to a specific error in the logs.
+func (e *RequestError) AbortWithStatus(status int, c *gin.Context) {
+	// If this error is because the resource does not exist, we likely do not need to log
+	// the error anywhere, just return a 404 and move on with our lives.
+	if os.IsNotExist(e.Err) {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The requested resource was not found on the system.",
+		})
+		return
+	}
+
+	// Otherwise, log the error to zap, and then report the error back to the user.
+	if status >= 500 {
+		e.logger().WithField("error", e.Err).Error("encountered HTTP/500 error while handling request")
+
+		c.Error(errors.WithStack(e))
+	} else {
+		e.logger().WithField("error", e.Err).Debug("encountered non-HTTP/500 error while handling request")
+	}
+
+	msg := "An unexpected error was encountered while processing this request."
+	if e.Message != "" {
+		msg = e.Message
+	}
+
+	c.AbortWithStatusJSON(status, gin.H{
+		"error":    msg,
+		"error_id": e.Uuid,
+	})
+}
+
+// Helper function to just abort with an internal server error. This is generally the response
+// from most errors encountered by the API.
+func (e *RequestError) AbortWithServerError(c *gin.Context) {
+	e.AbortWithStatus(http.StatusInternalServerError, c)
+}
+
+// Format the error to a string and include the UUID.
+func (e *RequestError) Error() string {
+	return fmt.Sprintf("%v (uuid: %s)", e.Err, e.Uuid)
+}

router/middleware.go

@@ -0,0 +1,67 @@
+package router
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"github.com/pterodactyl/wings/config"
+	"github.com/pterodactyl/wings/server"
+	"net/http"
+	"strings"
+)
+
+// Set the access request control headers on all of the requests.
+func SetAccessControlHeaders(c *gin.Context) {
+	c.Header("Access-Control-Allow-Origin", config.Get().PanelLocation)
+	c.Header("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization")
+	c.Next()
+}
+
+// Authenticates the request token against the given permission string, ensuring that
+// if it is a server permission, the token has control over that server. If it is a global
+// token, this will ensure that the request is using a properly signed global token.
+func AuthorizationMiddleware(c *gin.Context) {
+	auth := strings.SplitN(c.GetHeader("Authorization"), " ", 2)
+
+	if len(auth) != 2 || auth[0] != "Bearer" {
+		c.Header("WWW-Authenticate", "Bearer")
+		c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
+			"error": "The required authorization heads were not present in the request.",
+		})
+
+		return
+	}
+
+	// Try to match the request against the global token for the Daemon, regardless
+	// of the permission type. If nothing is matched we will fall through to the Panel
+	// API to try and validate permissions for a server.
+	if auth[1] == config.Get().AuthenticationToken {
+		c.Next()
+
+		return
+	}
+
+	c.AbortWithStatusJSON(http.StatusForbidden, gin.H{
+		"error": "You are not authorized to access this endpoint.",
+	})
+}
+
+// Helper function to fetch a server out of the servers collection stored in memory.
+func GetServer(uuid string) *server.Server {
+	return server.GetServers().Find(func(s *server.Server) bool {
+		return uuid == s.Uuid
+	})
+}
+
+// Ensure that the requested server exists in this setup. Returns a 404 if we cannot
+// locate it.
+func ServerExists(c *gin.Context) {
+	u, err := uuid.Parse(c.Param("server"))
+	if err != nil || GetServer(u.String()) == nil {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The resource you requested does not exist.",
+		})
+		return
+	}
+
+	c.Next()
+}

router/router.go

@@ -0,0 +1,96 @@
+package router
+
+import (
+	"github.com/apex/log"
+	"github.com/gin-gonic/gin"
+)
+
+// Configures the routing infrastructure for this daemon instance.
+func Configure() *gin.Engine {
+	gin.SetMode("release")
+
+	router := gin.New()
+
+	router.Use(gin.Recovery())
+	router.Use(SetAccessControlHeaders)
+	// @todo log this into a different file so you can setup IP blocking for abusive requests and such.
+	// This should still dump requests in debug mode since it does help with understanding the request
+	// lifecycle and quickly seeing what was called leading to the logs. However, it isn't feasible to mix
+	// this output in production and still get meaningful logs from it since they'll likely just be a huge
+	// spamfest.
+	router.Use(gin.LoggerWithFormatter(func(params gin.LogFormatterParams) string {
+		log.WithFields(log.Fields{
+			"client_ip": params.ClientIP,
+			"status":    params.StatusCode,
+			"latency":   params.Latency,
+		}).Debugf("%s %s", params.MethodColor()+params.Method+params.ResetColor(), params.Path)
+
+		return ""
+	}))
+
+	router.OPTIONS("/api/system", func(c *gin.Context) {
+		c.Status(200)
+	})
+
+	// These routes use signed URLs to validate access to the resource being requested.
+	router.GET("/download/backup", getDownloadBackup)
+	router.GET("/download/file", getDownloadFile)
+
+	// This route is special it sits above all of the other requests because we are
+	// using a JWT to authorize access to it, therefore it needs to be publicly
+	// accessible.
+	router.GET("/api/servers/:server/ws", ServerExists, getServerWebsocket)
+
+	// This request is called by another daemon when a server is going to be transferred out.
+	// This request does not need the AuthorizationMiddleware as the panel should never call it
+	// and requests are authenticated through a JWT the panel issues to the other daemon.
+	router.GET("/api/servers/:server/archive", ServerExists, getServerArchive)
+
+	// All of the routes beyond this mount will use an authorization middleware
+	// and will not be accessible without the correct Authorization header provided.
+	protected := router.Use(AuthorizationMiddleware)
+	protected.POST("/api/update", postUpdateConfiguration)
+	protected.GET("/api/system", getSystemInformation)
+	protected.GET("/api/servers", getAllServers)
+	protected.POST("/api/servers", postCreateServer)
+	protected.POST("/api/transfer", postTransfer)
+
+	// These are server specific routes, and require that the request be authorized, and
+	// that the server exist on the Daemon.
+	server := router.Group("/api/servers/:server")
+	server.Use(AuthorizationMiddleware, ServerExists)
+	{
+		server.GET("", getServer)
+		server.PATCH("", patchServer)
+		server.DELETE("", deleteServer)
+
+		server.GET("/logs", getServerLogs)
+		server.POST("/power", postServerPower)
+		server.POST("/commands", postServerCommands)
+		server.POST("/install", postServerInstall)
+		server.POST("/reinstall", postServerReinstall)
+
+		// This archive request causes the archive to start being created
+		// this should only be triggered by the panel.
+		server.POST("/archive", postServerArchive)
+
+		files := server.Group("/files")
+		{
+			files.GET("/contents", getServerFileContents)
+			files.GET("/list-directory", getServerListDirectory)
+			files.PUT("/rename", putServerRenameFile)
+			files.POST("/copy", postServerCopyFile)
+			files.POST("/write", postServerWriteFile)
+			files.POST("/create-directory", postServerCreateDirectory)
+			files.POST("/delete", postServerDeleteFile)
+		}
+
+		backup := server.Group("/backup")
+		{
+			backup.POST("", postServerBackup)
+			backup.DELETE("/:backup", deleteServerBackup)
+		}
+	}
+
+	return router
+}

router/router_download.go

@@ -0,0 +1,97 @@
+package router
+
+import (
+	"bufio"
+	"github.com/gin-gonic/gin"
+	"github.com/pterodactyl/wings/router/tokens"
+	"github.com/pterodactyl/wings/server/backup"
+	"net/http"
+	"os"
+	"strconv"
+)
+
+// Handle a download request for a server backup.
+func getDownloadBackup(c *gin.Context) {
+	token := tokens.BackupPayload{}
+	if err := tokens.ParseToken([]byte(c.Query("token")), &token); err != nil {
+		TrackedError(err).AbortWithServerError(c)
+		return
+	}
+
+	s := GetServer(token.ServerUuid)
+	if s == nil || !token.IsUniqueRequest() {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The requested resource was not found on this server.",
+		})
+		return
+	}
+
+	b, st, err := backup.LocateLocal(token.BackupUuid)
+	if err != nil {
+		if os.IsNotExist(err) {
+			c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+				"error": "The requested backup was not found on this server.",
+			})
+			return
+		}
+
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	f, err := os.Open(b.Path())
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+	defer f.Close()
+
+	c.Header("Content-Length", strconv.Itoa(int(st.Size())))
+	c.Header("Content-Disposition", "attachment; filename="+st.Name())
+	c.Header("Content-Type", "application/octet-stream")
+
+	bufio.NewReader(f).WriteTo(c.Writer)
+}
+
+// Handles downloading a specific file for a server.
+func getDownloadFile(c *gin.Context) {
+	token := tokens.FilePayload{}
+	if err := tokens.ParseToken([]byte(c.Query("token")), &token); err != nil {
+		TrackedError(err).AbortWithServerError(c)
+		return
+	}
+
+	s := GetServer(token.ServerUuid)
+	if s == nil || !token.IsUniqueRequest() {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The requested resource was not found on this server.",
+		})
+		return
+	}
+
+	p, _ := s.Filesystem.SafePath(token.FilePath)
+	st, err := os.Stat(p)
+	// If there is an error or we're somehow trying to download a directory, just
+	// respond with the appropriate error.
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	} else if st.IsDir() {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The requested resource was not found on this server.",
+		})
+		return
+	}
+
+	f, err := os.Open(p)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Header("Content-Length", strconv.Itoa(int(st.Size())))
+	c.Header("Content-Disposition", "attachment; filename="+st.Name())
+	c.Header("Content-Type", "application/octet-stream")
+
+	bufio.NewReader(f).WriteTo(c.Writer)
+}

router/router_server.go

@@ -0,0 +1,212 @@
+package router
+
+import (
+	"bytes"
+	"github.com/apex/log"
+	"github.com/gin-gonic/gin"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/server"
+	"net/http"
+	"os"
+	"strconv"
+)
+
+// Returns a single server from the collection of servers.
+func getServer(c *gin.Context) {
+	c.JSON(http.StatusOK, GetServer(c.Param("server")))
+}
+
+// Returns the logs for a given server instance.
+func getServerLogs(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	l, _ := strconv.ParseInt(c.DefaultQuery("size", "8192"), 10, 64)
+	if l <= 0 {
+		l = 2048
+	}
+
+	out, err := s.ReadLogfile(l)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"data": out})
+}
+
+// Handles a request to control the power state of a server. If the action being passed
+// through is invalid a 404 is returned. Otherwise, a HTTP/202 Accepted response is returned
+// and the actual power action is run asynchronously so that we don't have to block the
+// request until a potentially slow operation completes.
+//
+// This is done because for the most part the Panel is using websockets to determine when
+// things are happening, so theres no reason to sit and wait for a request to finish. We'll
+// just see over the socket if something isn't working correctly.
+func postServerPower(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	var data server.PowerAction
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	if !data.IsValid() {
+		c.AbortWithStatusJSON(http.StatusUnprocessableEntity, gin.H{
+			"error": "The power action provided was not valid, should be one of \"stop\", \"start\", \"restart\", \"kill\"",
+		})
+		return
+	}
+
+	// Because we route all of the actual bootup process to a separate thread we need to
+	// check the suspension status here, otherwise the user will hit the endpoint and then
+	// just sit there wondering why it returns a success but nothing actually happens.
+	//
+	// We don't really care about any of the other actions at this point, they'll all result
+	// in the process being stopped, which should have happened anyways if the server is suspended.
+	if (data.Action == "start" || data.Action == "restart") && s.Suspended {
+		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{
+			"error": "Cannot start or restart a server that is suspended.",
+		})
+		return
+	}
+
+	// Pass the actual heavy processing off to a seperate thread to handle so that
+	// we can immediately return a response from the server. Some of these actions
+	// can take quite some time, especially stopping or restarting.
+	go func(server *server.Server) {
+		if err := server.HandlePowerAction(data); err != nil {
+			server.Log().WithFields(log.Fields{"action": data, "error": err}).
+				Error("encountered error processing a server power action in the background")
+		}
+	}(s)
+
+	c.Status(http.StatusAccepted)
+}
+
+// Sends an array of commands to a running server instance.
+func postServerCommands(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	if running, err := s.Environment.IsRunning(); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	} else if !running {
+		c.AbortWithStatusJSON(http.StatusBadGateway, gin.H{
+			"error": "Cannot send commands to a stopped server instance.",
+		})
+		return
+	}
+
+	var data struct {
+		Commands []string `json:"commands"`
+	}
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	for _, command := range data.Commands {
+		if err := s.Environment.SendCommand(command); err != nil {
+			s.Log().WithFields(log.Fields{"command": command, "error": err}).Warn("failed to send command to server instance")
+		}
+	}
+
+	c.Status(http.StatusNoContent)
+}
+
+// Updates information about a server internally.
+func patchServer(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	buf := bytes.Buffer{}
+	buf.ReadFrom(c.Request.Body)
+
+	if err := s.UpdateDataStructure(buf.Bytes(), true); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}
+
+// Performs a server installation in a background thread.
+func postServerInstall(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	go func(serv *server.Server) {
+		if err := serv.Install(); err != nil {
+			serv.Log().WithField("error", err).Error("failed to execute server installation process")
+		}
+	}(s)
+
+	c.Status(http.StatusAccepted)
+}
+
+// Reinstalls a server.
+func postServerReinstall(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	go func(serv *server.Server) {
+		if err := serv.Reinstall(); err != nil {
+			serv.Log().WithField("error", err).Error("failed to complete server re-install process")
+		}
+	}(s)
+
+	c.Status(http.StatusAccepted)
+}
+
+// Deletes a server from the wings daemon and deassociates its objects.
+func deleteServer(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	// Immediately suspend the server to prevent a user from attempting
+	// to start it while this process is running.
+	s.Suspended = true
+
+	// If the server is currently installing, abort it.
+	if s.IsInstalling() {
+		s.AbortInstallation()
+	}
+
+	// Delete the server's archive if it exists. We intentionally don't return
+	// here, if the archive fails to delete, the server can still be removed.
+	if err := s.Archiver.DeleteIfExists(); err != nil {
+		s.Log().WithField("error", err).Warn("failed to delete server archive during deletion process")
+	}
+
+	// Unsubscribe all of the event listeners.
+	s.Events().UnsubscribeAll()
+
+	// Destroy the environment; in Docker this will handle a running container and
+	// forcibly terminate it before removing the container, so we do not need to handle
+	// that here.
+	if err := s.Environment.Destroy(); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+	}
+
+	// Once the environment is terminated, remove the server files from the system. This is
+	// done in a separate process since failure is not the end of the world and can be
+	// manually cleaned up after the fact.
+	//
+	// In addition, servers with large amounts of files can take some time to finish deleting
+	// so we don't want to block the HTTP call while waiting on this.
+	go func(p string) {
+		if err := os.RemoveAll(p); err != nil {
+			log.WithFields(log.Fields{
+				"path": p,
+				"error": errors.WithStack(err),
+			}).Warn("failed to remove server files during deletion process")
+		}
+	}(s.Filesystem.Path())
+
+	var uuid = s.Uuid
+	server.GetServers().Remove(func(s2 *server.Server) bool {
+		return s2.Uuid == uuid
+	})
+
+	// Deallocate the reference to this server.
+	s = nil
+
+	c.Status(http.StatusNoContent)
+}

router/router_server_backup.go

@@ -0,0 +1,65 @@
+package router
+
+import (
+	"errors"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/pterodactyl/wings/server"
+	"github.com/pterodactyl/wings/server/backup"
+	"net/http"
+)
+
+// Backs up a server.
+func postServerBackup(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	data := &backup.Request{}
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	var adapter backup.BackupInterface
+	var err error
+
+	switch data.Adapter {
+	case backup.LocalBackupAdapter:
+		adapter, err = data.NewLocalBackup()
+	case backup.S3BackupAdapter:
+		adapter, err = data.NewS3Backup()
+	default:
+		err = errors.New(fmt.Sprintf("unknown backup adapter [%s] provided", data.Adapter))
+		return
+	}
+
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	go func(b backup.BackupInterface, serv *server.Server) {
+		if err := serv.Backup(b); err != nil {
+			serv.Log().WithField("error", err).Error("failed to generate backup for server")
+		}
+	}(adapter, s)
+
+	c.Status(http.StatusAccepted)
+}
+
+// Deletes a local backup of a server.
+func deleteServerBackup(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	b, _, err := backup.LocateLocal(c.Param("backup"))
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	if err := b.Remove(); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}

router/router_server_files.go

@@ -0,0 +1,190 @@
+package router
+
+import (
+	"bufio"
+	"github.com/gin-gonic/gin"
+	"net/http"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Returns the contents of a file on the server.
+func getServerFileContents(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	p, err := url.QueryUnescape(c.Query("file"))
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+	p = "/" + strings.TrimLeft(p, "/")
+
+	cleaned, err := s.Filesystem.SafePath(p)
+	if err != nil {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The file requested could not be found.",
+		})
+		return
+	}
+
+	st, err := s.Filesystem.Stat(cleaned)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	if st.Info.IsDir() {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The requested resource was not found on the system.",
+		})
+		return
+	}
+
+	f, err := os.Open(cleaned)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+	defer f.Close()
+
+	c.Header("X-Mime-Type", st.Mimetype)
+	c.Header("Content-Length", strconv.Itoa(int(st.Info.Size())))
+
+	// If a download parameter is included in the URL go ahead and attach the necessary headers
+	// so that the file can be downloaded.
+	if c.Query("download") != "" {
+		c.Header("Content-Disposition", "attachment; filename="+st.Info.Name())
+		c.Header("Content-Type", "application/octet-stream")
+	}
+
+	bufio.NewReader(f).WriteTo(c.Writer)
+}
+
+// Returns the contents of a directory for a server.
+func getServerListDirectory(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	d, err := url.QueryUnescape(c.Query("directory"))
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	stats, err := s.Filesystem.ListDirectory(d)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.JSON(http.StatusOK, stats)
+}
+
+// Renames (or moves) a file for a server.
+func putServerRenameFile(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	var data struct {
+		RenameFrom string `json:"rename_from"`
+		RenameTo   string `json:"rename_to"`
+	}
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	if data.RenameFrom == "" || data.RenameTo == "" {
+		c.AbortWithStatusJSON(http.StatusUnprocessableEntity, gin.H{
+			"error": "Invalid paths were provided, did you forget to provide both a new and old path?",
+		})
+		return
+	}
+
+	if err := s.Filesystem.Rename(data.RenameFrom, data.RenameTo); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}
+
+// Copies a server file.
+func postServerCopyFile(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	var data struct {
+		Location string `json:"location"`
+	}
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	if err := s.Filesystem.Copy(data.Location); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}
+
+// Deletes a server file.
+func postServerDeleteFile(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	var data struct {
+		Location string `json:"location"`
+	}
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	if err := s.Filesystem.Delete(data.Location); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}
+
+// Writes the contents of the request to a file on a server.
+func postServerWriteFile(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	f, err := url.QueryUnescape(c.Query("file"))
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+	f = "/" + strings.TrimLeft(f, "/")
+
+	if err := s.Filesystem.Writefile(f, c.Request.Body); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}
+
+// Create a directory on a server.
+func postServerCreateDirectory(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	var data struct {
+		Name string `json:"name"`
+		Path string `json:"path"`
+	}
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&data); err != nil {
+		return
+	}
+
+	if err := s.Filesystem.CreateDirectory(data.Name, data.Path); err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}

router/router_server_ws.go

@@ -0,0 +1,58 @@
+package router
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/gin-gonic/gin"
+	ws "github.com/gorilla/websocket"
+	"github.com/pterodactyl/wings/router/websocket"
+)
+
+// Upgrades a connection to a websocket and passes events along between.
+func getServerWebsocket(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+	handler, err := websocket.GetHandler(s, c.Writer, c.Request)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+	defer handler.Connection.Close()
+
+	// Create a context that can be canceled when the user disconnects from this
+	// socket that will also cancel listeners running in separate threads.
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	go handler.ListenForServerEvents(ctx)
+	go handler.ListenForExpiration(ctx)
+
+	for {
+		j := websocket.Message{}
+
+		_, p, err := handler.Connection.ReadMessage()
+		if err != nil {
+			if !ws.IsCloseError(
+				err,
+				ws.CloseNormalClosure,
+				ws.CloseGoingAway,
+				ws.CloseNoStatusReceived,
+				ws.CloseServiceRestart,
+				ws.CloseAbnormalClosure,
+			) {
+				s.Log().WithField("error", err).Warn("error handling websocket message for server")
+			}
+			break
+		}
+
+		// Discard and JSON parse errors into the void and don't continue processing this
+		// specific socket request. If we did a break here the client would get disconnected
+		// from the socket, which is NOT what we want to do.
+		if err := json.Unmarshal(p, &j); err != nil {
+			continue
+		}
+
+		if err := handler.HandleInbound(j); err != nil {
+			handler.SendErrorJson(j, err)
+		}
+	}
+}

router/router_system.go

@@ -0,0 +1,103 @@
+package router
+
+import (
+	"bytes"
+	"github.com/apex/log"
+	"github.com/gin-gonic/gin"
+	"github.com/pterodactyl/wings/config"
+	"github.com/pterodactyl/wings/installer"
+	"github.com/pterodactyl/wings/server"
+	"github.com/pterodactyl/wings/system"
+	"net/http"
+	"strings"
+)
+
+// Returns information about the system that wings is running on.
+func getSystemInformation(c *gin.Context) {
+	i, err := system.GetSystemInformation()
+	if err != nil {
+		TrackedError(err).AbortWithServerError(c)
+
+		return
+	}
+
+	c.JSON(http.StatusOK, i)
+}
+
+// Returns all of the servers that are registered and configured correctly on
+// this wings instance.
+func getAllServers(c *gin.Context) {
+	c.JSON(http.StatusOK, server.GetServers().All())
+}
+
+// Creates a new server on the wings daemon and begins the installation process
+// for it.
+func postCreateServer(c *gin.Context) {
+	buf := bytes.Buffer{}
+	buf.ReadFrom(c.Request.Body)
+
+	install, err := installer.New(buf.Bytes())
+	if err != nil {
+		if installer.IsValidationError(err) {
+			c.AbortWithStatusJSON(http.StatusUnprocessableEntity, gin.H{
+				"error": "The data provided in the request could not be validated.",
+			})
+			return
+		}
+
+		TrackedError(err).AbortWithServerError(c)
+		return
+	}
+
+	// Plop that server instance onto the request so that it can be referenced in
+	// requests from here-on out.
+	server.GetServers().Add(install.Server())
+
+	// Begin the installation process in the background to not block the request
+	// cycle. If there are any errors they will be logged and communicated back
+	// to the Panel where a reinstall may take place.
+	go func(i *installer.Installer) {
+		i.Execute()
+
+		if err := i.Server().Install(); err != nil {
+			log.WithFields(log.Fields{"server": i.Uuid(), "error": err}).Error("failed to run install process for server")
+		}
+	}(install)
+
+	c.Status(http.StatusAccepted)
+}
+
+// Updates the running configuration for this daemon instance.
+func postUpdateConfiguration(c *gin.Context) {
+	// A backup of the configuration for error purposes.
+	ccopy := *config.Get()
+	// A copy of the configuration we're using to bind the data recevied into.
+	cfg := *config.Get()
+
+	// BindJSON sends 400 if the request fails, all we need to do is return
+	if err := c.BindJSON(&cfg); err != nil {
+		return
+	}
+
+	// Keep the SSL certificates the same since the Panel will send through Lets Encrypt
+	// default locations. However, if we picked a different location manually we don't
+	// want to override that.
+	//
+	// If you pass through manual locations in the API call this logic will be skipped.
+	if strings.HasPrefix(cfg.Api.Ssl.KeyFile, "/etc/letsencrypt/live/") {
+		cfg.Api.Ssl.KeyFile = ccopy.Api.Ssl.KeyFile
+		cfg.Api.Ssl.CertificateFile = ccopy.Api.Ssl.CertificateFile
+	}
+
+	config.Set(&cfg)
+	if err := config.Get().WriteToDisk(); err != nil {
+		// If there was an error writing to the disk, revert back to the configuration we had
+		// before this code was run.
+		config.Set(&ccopy)
+
+		TrackedError(err).AbortWithServerError(c)
+		return
+	}
+
+	c.Status(http.StatusNoContent)
+}

router/router_transfer.go

@@ -0,0 +1,313 @@
+package router
+
+import (
+	"bufio"
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"github.com/buger/jsonparser"
+	"github.com/gin-gonic/gin"
+	"github.com/mholt/archiver/v3"
+	"github.com/pterodactyl/wings/api"
+	"github.com/pterodactyl/wings/config"
+	"github.com/pterodactyl/wings/installer"
+	"github.com/pterodactyl/wings/router/tokens"
+	"github.com/pterodactyl/wings/server"
+	"go.uber.org/zap"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func getServerArchive(c *gin.Context) {
+	auth := strings.SplitN(c.GetHeader("Authorization"), " ", 2)
+
+	if len(auth) != 2 || auth[0] != "Bearer" {
+		c.Header("WWW-Authenticate", "Bearer")
+		c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{
+			"error": "The required authorization heads were not present in the request.",
+		})
+		return
+	}
+
+	token := tokens.TransferPayload{}
+	if err := tokens.ParseToken([]byte(auth[1]), &token); err != nil {
+		TrackedError(err).AbortWithServerError(c)
+		return
+	}
+
+	if token.Subject != c.Param("server") {
+		c.AbortWithStatusJSON(http.StatusForbidden, gin.H{
+			"error": "( .. •˘___˘• .. )",
+		})
+		return
+	}
+
+	s := GetServer(c.Param("server"))
+
+	st, err := s.Archiver.Stat()
+	if err != nil {
+		if !os.IsNotExist(err) {
+			TrackedServerError(err, s).SetMessage("failed to stat archive").AbortWithServerError(c)
+			return
+		}
+
+		c.AbortWithStatus(http.StatusNotFound)
+		return
+	}
+
+	checksum, err := s.Archiver.Checksum()
+	if err != nil {
+		TrackedServerError(err, s).SetMessage("failed to calculate checksum").AbortWithServerError(c)
+		return
+	}
+
+	file, err := os.Open(s.Archiver.ArchivePath())
+	if err != nil {
+		tserr := TrackedServerError(err, s)
+		if !os.IsNotExist(err) {
+			tserr.SetMessage("failed to open archive for reading")
+		} else {
+			tserr.SetMessage("failed to open archive")
+		}
+
+		tserr.AbortWithServerError(c)
+		return
+	}
+	defer file.Close()
+
+	c.Header("X-Checksum", checksum)
+	c.Header("X-Mime-Type", st.Mimetype)
+	c.Header("Content-Length", strconv.Itoa(int(st.Info.Size())))
+	c.Header("Content-Disposition", "attachment; filename="+s.Archiver.ArchiveName())
+	c.Header("Content-Type", "application/octet-stream")
+
+	bufio.NewReader(file).WriteTo(c.Writer)
+}
+
+func postServerArchive(c *gin.Context) {
+	s := GetServer(c.Param("server"))
+
+	go func(server *server.Server) {
+		start := time.Now()
+
+		if err := server.Archiver.Archive(); err != nil {
+			zap.S().Errorw("failed to get archive for server", zap.String("server", s.Uuid), zap.Error(err))
+			return
+		}
+
+		zap.S().Debugw(
+			"successfully created archive for server",
+			zap.String("server", server.Uuid),
+			zap.Duration("time", time.Now().Sub(start).Round(time.Microsecond)),
+		)
+
+		r := api.NewRequester()
+		rerr, err := r.SendArchiveStatus(server.Uuid, true)
+		if rerr != nil || err != nil {
+			if err != nil {
+				zap.S().Errorw("failed to notify panel with archive status", zap.String("server", server.Uuid), zap.Error(err))
+				return
+			}
+
+			zap.S().Errorw(
+				"panel returned an error when sending the archive status",
+				zap.String("server", server.Uuid),
+				zap.Error(errors.New(rerr.String())),
+			)
+			return
+		}
+
+		zap.S().Debugw("successfully notified panel about archive status", zap.String("server", server.Uuid))
+	}(s)
+
+	c.Status(http.StatusAccepted)
+}
+
+func postTransfer(c *gin.Context) {
+	zap.S().Debug("incoming transfer from panel")
+
+	buf := bytes.Buffer{}
+	buf.ReadFrom(c.Request.Body)
+
+	go func(data []byte) {
+		serverID, _ := jsonparser.GetString(data, "server_id")
+		url, _ := jsonparser.GetString(data, "url")
+		token, _ := jsonparser.GetString(data, "token")
+
+		// Create an http client with no timeout.
+		client := &http.Client{Timeout: 0}
+
+		hasError := true
+		defer func() {
+			if !hasError {
+				return
+			}
+
+			zap.S().Errorw("server transfer has failed", zap.String("server", serverID))
+			rerr, err := api.NewRequester().SendTransferFailure(serverID)
+			if rerr != nil || err != nil {
+				if err != nil {
+					zap.S().Errorw("failed to notify panel with transfer failure", zap.String("server", serverID), zap.Error(err))
+					return
+				}
+
+				zap.S().Errorw("panel returned an error when notifying of a transfer failure", zap.String("server", serverID), zap.Error(errors.New(rerr.String())))
+				return
+			}
+
+			zap.S().Debugw("successfully notified panel about transfer failure", zap.String("server", serverID))
+		}()
+
+		// Make a new GET request to the URL the panel gave us.
+		req, err := http.NewRequest("GET", url, nil)
+		if err != nil {
+			zap.S().Errorw("failed to create http request", zap.Error(err))
+			return
+		}
+
+		// Add the authorization header.
+		req.Header.Set("Authorization", token)
+
+		// Execute the http request.
+		res, err := client.Do(req)
+		if err != nil {
+			zap.S().Errorw("failed to send http request", zap.Error(err))
+			return
+		}
+		defer res.Body.Close()
+
+		// Handle non-200 status codes.
+		if res.StatusCode != 200 {
+			body, err := ioutil.ReadAll(res.Body)
+			if err != nil {
+				zap.S().Errorw("failed to read response body", zap.Int("status", res.StatusCode), zap.Error(err))
+				return
+			}
+
+			zap.S().Errorw("failed to request server archive", zap.Int("status", res.StatusCode), zap.String("body", string(body)))
+			return
+		}
+
+		// Get the path to the archive.
+		archivePath := filepath.Join(config.Get().System.ArchiveDirectory, serverID + ".tar.gz")
+
+		// Check if the archive already exists and delete it if it does.
+		_, err = os.Stat(archivePath)
+		if err != nil {
+			if !os.IsNotExist(err) {
+				zap.S().Errorw("failed to stat file", zap.Error(err))
+				return
+			}
+		} else {
+			if err := os.Remove(archivePath); err != nil {
+				zap.S().Errorw("failed to delete old file", zap.Error(err))
+				return
+			}
+		}
+
+		// Create the file.
+		file, err := os.Create(archivePath)
+		if err != nil {
+			zap.S().Errorw("failed to open file on disk", zap.Error(err))
+			return
+		}
+
+		// Copy the file.
+		_, err = io.Copy(file, res.Body)
+		if err != nil {
+			zap.S().Errorw("failed to copy file to disk", zap.Error(err))
+			return
+		}
+
+		// Close the file so it can be opened to verify the checksum.
+		if err := file.Close(); err != nil {
+			zap.S().Errorw("failed to close archive file", zap.Error(err))
+			return
+		}
+		zap.S().Debug("server archive has been downloaded, computing checksum..", zap.String("server", serverID))
+
+		// Open the archive file for computing a checksum.
+		file, err = os.Open(archivePath)
+		if err != nil {
+			zap.S().Errorw("failed to open file on disk", zap.Error(err))
+			return
+		}
+
+		// Compute the sha256 checksum of the file.
+		hash := sha256.New()
+		if _, err := io.Copy(hash, file); err != nil {
+			zap.S().Errorw("failed to copy file for checksum verification", zap.Error(err))
+			return
+		}
+
+		// Verify the two checksums.
+		if hex.EncodeToString(hash.Sum(nil)) != res.Header.Get("X-Checksum") {
+			zap.S().Errorw("checksum failed verification")
+			return
+		}
+
+		// Close the file.
+		if err := file.Close(); err != nil {
+			zap.S().Errorw("failed to close archive file", zap.Error(err))
+			return
+		}
+
+		zap.S().Infow("server archive transfer was successful", zap.String("server", serverID))
+
+		// Get the server data from the request.
+		serverData, t, _, _ := jsonparser.Get(data, "server")
+		if t != jsonparser.Object {
+			zap.S().Errorw("invalid server data passed in request")
+			return
+		}
+
+		// Create a new server installer (note this does not execute the install script)
+		i, err := installer.New(serverData)
+		if err != nil {
+			zap.S().Warnw("failed to validate the received server data", zap.Error(err))
+			return
+		}
+
+		// Add the server to the collection.
+		server.GetServers().Add(i.Server())
+
+		// Create the server's environment (note this does not execute the install script)
+		i.Execute()
+
+		// Un-archive the archive. That sounds weird..
+		if err := archiver.NewTarGz().Unarchive(archivePath, i.Server().Filesystem.Path()); err != nil {
+			zap.S().Errorw("failed to extract archive", zap.String("server", serverID), zap.Error(err))
+			return
+		}
+
+		// We mark the process as being successful here as if we fail to send a transfer success,
+		// then a transfer failure won't probably be successful either.
+		//
+		// It may be useful to retry sending the transfer success every so often just in case of a small
+		// hiccup or the fix of whatever error causing the success request to fail.
+		hasError = false
+
+		// Notify the panel that the transfer succeeded.
+		rerr, err := api.NewRequester().SendTransferSuccess(serverID)
+		if rerr != nil || err != nil {
+			if err != nil {
+				zap.S().Errorw("failed to notify panel with transfer success", zap.String("server", serverID), zap.Error(err))
+				return
+			}
+
+			zap.S().Errorw("panel returned an error when notifying of a transfer success", zap.String("server", serverID), zap.Error(errors.New(rerr.String())))
+			return
+		}
+
+		zap.S().Debugw("successfully notified panel about transfer success", zap.String("server", serverID))
+	}(buf.Bytes())
+
+	c.Status(http.StatusAccepted)
+}

router/tokens/backup.go

@@ -0,0 +1,25 @@
+package tokens
+
+import (
+	"github.com/gbrlsnchs/jwt/v3"
+)
+
+type BackupPayload struct {
+	jwt.Payload
+	ServerUuid string `json:"server_uuid"`
+	BackupUuid string `json:"backup_uuid"`
+	UniqueId   string `json:"unique_id"`
+}
+
+// Returns the JWT payload.
+func (p *BackupPayload) GetPayload() *jwt.Payload {
+	return &p.Payload
+}
+
+// Determines if this JWT is valid for the given request cycle. If the
+// unique ID passed in the token has already been seen before this will
+// return false. This allows us to use this JWT as a one-time token that
+// validates all of the request.
+func (p *BackupPayload) IsUniqueRequest() bool {
+	return getTokenStore().IsValidToken(p.UniqueId)
+}

router/tokens/file.go

@@ -0,0 +1,25 @@
+package tokens
+
+import (
+	"github.com/gbrlsnchs/jwt/v3"
+)
+
+type FilePayload struct {
+	jwt.Payload
+	FilePath   string `json:"file_path"`
+	ServerUuid string `json:"server_uuid"`
+	UniqueId   string `json:"unique_id"`
+}
+
+// Returns the JWT payload.
+func (p *FilePayload) GetPayload() *jwt.Payload {
+	return &p.Payload
+}
+
+// Determines if this JWT is valid for the given request cycle. If the
+// unique ID passed in the token has already been seen before this will
+// return false. This allows us to use this JWT as a one-time token that
+// validates all of the request.
+func (p *FilePayload) IsUniqueRequest() bool {
+	return getTokenStore().IsValidToken(p.UniqueId)
+}

router/tokens/parser.go

@@ -0,0 +1,27 @@
+package tokens
+
+import (
+	"github.com/gbrlsnchs/jwt/v3"
+	"github.com/pterodactyl/wings/config"
+	"time"
+)
+
+type TokenData interface {
+	GetPayload() *jwt.Payload
+}
+
+// Validates the provided JWT against the known secret for the Daemon and returns the
+// parsed data. This function DOES NOT validate that the token is valid for the connected
+// server, nor does it ensure that the user providing the token is able to actually do things.
+//
+// This simply returns a parsed token.
+func ParseToken(token []byte, data TokenData) error {
+	verifyOptions := jwt.ValidatePayload(
+		data.GetPayload(),
+		jwt.ExpirationTimeValidator(time.Now()),
+	)
+
+	_, err := jwt.Verify(token, config.GetJwtAlgorithm(), &data, verifyOptions)
+
+	return err
+}

router/tokens/token_store.go

@@ -0,0 +1,41 @@
+package tokens
+
+import (
+	"github.com/patrickmn/go-cache"
+	"sync"
+	"time"
+)
+
+type TokenStore struct {
+	sync.Mutex
+	cache *cache.Cache
+}
+
+var _tokens *TokenStore
+
+// Returns the global unique token store cache. This is used to validate
+// one time token usage by storing any received tokens in a local memory
+// cache until they are ready to expire.
+func getTokenStore() *TokenStore {
+	if _tokens == nil {
+		_tokens = &TokenStore{
+			cache: cache.New(time.Minute*60, time.Minute*5),
+		}
+	}
+
+	return _tokens
+}
+
+// Checks if a token is valid or not.
+func (t *TokenStore) IsValidToken(token string) bool {
+	t.Lock()
+	defer t.Unlock()
+
+	_, exists := t.cache.Get(token)
+
+	if !exists {
+		t.cache.Add(token, "", time.Minute*60)
+	}
+
+	return !exists
+}

router/tokens/transfer.go

@@ -0,0 +1,14 @@
+package tokens
+
+import (
+	"github.com/gbrlsnchs/jwt/v3"
+)
+
+type TransferPayload struct {
+	jwt.Payload
+}
+
+// GetPayload returns the JWT payload.
+func (p *TransferPayload) GetPayload() *jwt.Payload {
+	return &p.Payload
+}

router/tokens/websocket.go

@@ -0,0 +1,30 @@
+package tokens
+
+import (
+	"encoding/json"
+	"github.com/gbrlsnchs/jwt/v3"
+	"strings"
+)
+
+type WebsocketPayload struct {
+	jwt.Payload
+	UserID      json.Number `json:"user_id"`
+	ServerUUID  string      `json:"server_uuid"`
+	Permissions []string    `json:"permissions"`
+}
+
+// Returns the JWT payload.
+func (p *WebsocketPayload) GetPayload() *jwt.Payload {
+	return &p.Payload
+}
+
+// Checks if the given token payload has a permission string.
+func (p *WebsocketPayload) HasPermission(permission string) bool {
+	for _, k := range p.Permissions {
+		if k == permission || (!strings.HasPrefix(permission, "admin") && k == "*") {
+			return true
+		}
+	}
+
+	return false
+}

router/websocket/listeners.go

@@ -0,0 +1,71 @@
+package websocket
+
+import (
+	"context"
+	"github.com/pterodactyl/wings/server"
+	"time"
+)
+
+// Checks the time to expiration on the JWT every 30 seconds until the token has
+// expired. If we are within 3 minutes of the token expiring, send a notice over
+// the socket that it is expiring soon. If it has expired, send that notice as well.
+func (h *Handler) ListenForExpiration(ctx context.Context) {
+	// Make a ticker and completion channel that is used to continuously poll the
+	// JWT stored in the session to send events to the socket when it is expiring.
+	ticker := time.NewTicker(time.Second * 30)
+
+	// Whenever this function is complete, end the ticker, close out the channel,
+	// and then close the websocket connection.
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			jwt := h.GetJwt()
+			if jwt != nil {
+				if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 0 {
+					h.SendJson(&Message{Event: TokenExpiredEvent})
+				} else if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 180 {
+					h.SendJson(&Message{Event: TokenExpiringEvent})
+				}
+			}
+		}
+	}
+}
+
+// Listens for different events happening on a server and sends them along
+// to the connected websocket.
+func (h *Handler) ListenForServerEvents(ctx context.Context) {
+	events := []string{
+		server.StatsEvent,
+		server.StatusEvent,
+		server.ConsoleOutputEvent,
+		server.InstallOutputEvent,
+		server.DaemonMessageEvent,
+		server.BackupCompletedEvent,
+	}
+
+	eventChannel := make(chan server.Event)
+	for _, event := range events {
+		h.server.Events().Subscribe(event, eventChannel)
+	}
+
+	select {
+	case <-ctx.Done():
+		for _, event := range events {
+			h.server.Events().Unsubscribe(event, eventChannel)
+		}
+
+		close(eventChannel)
+	default:
+		// Listen for different events emitted by the server and respond to them appropriately.
+		for d := range eventChannel {
+			h.SendJson(&Message{
+				Event: d.Topic,
+				Args:  []string{d.Data},
+			})
+		}
+	}
+}

router/websocket/message.go

@@ -0,0 +1,26 @@
+package websocket
+
+const (
+	AuthenticationSuccessEvent = "auth success"
+	TokenExpiringEvent         = "token expiring"
+	TokenExpiredEvent          = "token expired"
+	AuthenticationEvent        = "auth"
+	SetStateEvent              = "set state"
+	SendServerLogsEvent        = "send logs"
+	SendCommandEvent           = "send command"
+	ErrorEvent                 = "daemon error"
+)
+
+type Message struct {
+	// The event to perform. Should be one of the following that are supported:
+	//
+	// - status : Returns the server's power state.
+	// - logs : Returns the server log data at the time of the request.
+	// - power : Performs a power action aganist the server based the data.
+	// - command : Performs a command on a server using the data field.
+	Event string `json:"event"`
+
+	// The data to pass along, only used by power/command currently. Other requests
+	// should either omit the field or pass an empty value as it is ignored.
+	Args []string `json:"args,omitempty"`
+}

router/websocket/websocket.go

@@ -0,0 +1,334 @@
+package websocket
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/apex/log"
+	"github.com/gbrlsnchs/jwt/v3"
+	"github.com/google/uuid"
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/config"
+	"github.com/pterodactyl/wings/router/tokens"
+	"github.com/pterodactyl/wings/server"
+	"net/http"
+	"os"
+	"strings"
+	"sync"
+	"time"
+)
+
+const (
+	PermissionConnect          = "websocket.connect"
+	PermissionSendCommand      = "control.console"
+	PermissionSendPowerStart   = "control.start"
+	PermissionSendPowerStop    = "control.stop"
+	PermissionSendPowerRestart = "control.restart"
+	PermissionReceiveErrors    = "admin.websocket.errors"
+	PermissionReceiveInstall   = "admin.websocket.install"
+	PermissionReceiveBackups   = "backup.read"
+)
+
+type Handler struct {
+	sync.RWMutex
+	Connection *websocket.Conn
+	jwt        *tokens.WebsocketPayload `json:"-"`
+	server     *server.Server
+}
+
+// Parses a JWT into a websocket token payload.
+func NewTokenPayload(token []byte) (*tokens.WebsocketPayload, error) {
+	payload := tokens.WebsocketPayload{}
+	err := tokens.ParseToken(token, &payload)
+	if err != nil {
+		return nil, err
+	}
+
+	if !payload.HasPermission(PermissionConnect) {
+		return nil, errors.New("not authorized to connect to this socket")
+	}
+
+	return &payload, nil
+}
+
+// Returns a new websocket handler using the context provided.
+func GetHandler(s *server.Server, w http.ResponseWriter, r *http.Request) (*Handler, error) {
+	upgrader := websocket.Upgrader{
+		// Ensure that the websocket request is originating from the Panel itself,
+		// and not some other location.
+		CheckOrigin: func(r *http.Request) bool {
+			return r.Header.Get("Origin") == config.Get().PanelLocation
+		},
+	}
+
+	conn, err := upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Handler{
+		Connection: conn,
+		jwt:        nil,
+		server:     s,
+	}, nil
+}
+
+func (h *Handler) SendJson(v *Message) error {
+	// Do not send JSON down the line if the JWT on the connection is not
+	// valid!
+	if err := h.TokenValid(); err != nil {
+		return nil
+	}
+
+	j := h.GetJwt()
+	if j != nil {
+		// If we're sending installation output but the user does not have the required
+		// permissions to see the output, don't send it down the line.
+		if v.Event == server.InstallOutputEvent {
+			if !j.HasPermission(PermissionReceiveInstall) {
+				return nil
+			}
+		}
+
+		// If the user does not have permission to see backup events, do not emit
+		// them over the socket.
+		if strings.HasPrefix(v.Event, server.BackupCompletedEvent) {
+			if !j.HasPermission(PermissionReceiveBackups) {
+				return nil
+			}
+		}
+	}
+
+	return h.unsafeSendJson(v)
+}
+
+// Sends JSON over the websocket connection, ignoring the authentication state of the
+// socket user. Do not call this directly unless you are positive a response should be
+// sent back to the client!
+func (h *Handler) unsafeSendJson(v interface{}) error {
+	h.Lock()
+	defer h.Unlock()
+
+	return h.Connection.WriteJSON(v)
+}
+
+// Checks if the JWT is still valid.
+func (h *Handler) TokenValid() error {
+	j := h.GetJwt()
+	if j == nil {
+		return errors.New("no jwt present")
+	}
+
+	if err := jwt.ExpirationTimeValidator(time.Now())(&j.Payload); err != nil {
+		return err
+	}
+
+	if !j.HasPermission(PermissionConnect) {
+		return errors.New("jwt does not have connect permission")
+	}
+
+	if h.server.Uuid != j.ServerUUID {
+		return errors.New("jwt server uuid mismatch")
+	}
+
+	return nil
+}
+
+// Sends an error back to the connected websocket instance by checking the permissions
+// of the token. If the user has the "receive-errors" grant we will send back the actual
+// error message, otherwise we just send back a standard error message.
+func (h *Handler) SendErrorJson(msg Message, err error) error {
+	j := h.GetJwt()
+
+	message := "an unexpected error was encountered while handling this request"
+	if server.IsSuspendedError(err) || (j != nil && j.HasPermission(PermissionReceiveErrors)) {
+		message = err.Error()
+	}
+
+	m, u := h.GetErrorMessage(message)
+
+	wsm := Message{Event: ErrorEvent}
+	wsm.Args = []string{m}
+
+	if !server.IsSuspendedError(err) {
+		h.server.Log().WithFields(log.Fields{"event": msg.Event, "error_identifier": u.String(), "error": err}).
+			Error("failed to handle websocket process; an error was encountered processing an event")
+	}
+
+	return h.unsafeSendJson(wsm)
+}
+
+// Converts an error message into a more readable representation and returns a UUID
+// that can be cross-referenced to find the specific error that triggered.
+func (h *Handler) GetErrorMessage(msg string) (string, uuid.UUID) {
+	u := uuid.Must(uuid.NewRandom())
+
+	m := fmt.Sprintf("Error Event [%s]: %s", u.String(), msg)
+
+	return m, u
+}
+
+// Sets the JWT for the websocket in a race-safe manner.
+func (h *Handler) setJwt(token *tokens.WebsocketPayload) {
+	h.Lock()
+	h.jwt = token
+	h.Unlock()
+}
+
+func (h *Handler) GetJwt() *tokens.WebsocketPayload {
+	h.RLock()
+	defer h.RUnlock()
+
+	return h.jwt
+}
+
+// Handle the inbound socket request and route it to the proper server action.
+func (h *Handler) HandleInbound(m Message) error {
+	if m.Event != AuthenticationEvent {
+		if err := h.TokenValid(); err != nil {
+			log.WithField("message", err.Error()).Debug("jwt for server websocket is no longer valid")
+
+			h.unsafeSendJson(Message{
+				Event: ErrorEvent,
+				Args:  []string{"could not authenticate client: " + err.Error()},
+			})
+
+			return nil
+		}
+	}
+
+	switch m.Event {
+	case AuthenticationEvent:
+		{
+			token, err := NewTokenPayload([]byte(strings.Join(m.Args, "")))
+			if err != nil {
+				// If the error says the JWT expired, send a token expired
+				// event and hopefully the client renews the token.
+				if err == jwt.ErrExpValidation {
+					h.SendJson(&Message{Event: TokenExpiredEvent})
+					return nil
+				}
+
+				return err
+			}
+
+			// Check if the user has previously authenticated successfully.
+			newConnection := h.GetJwt() == nil
+
+			// Previously there was a HasPermission(PermissionConnect) check around this,
+			// however NewTokenPayload will return an error if it doesn't have the connect
+			// permission meaning that it was a redundant function call.
+			h.setJwt(token)
+
+			// Tell the client they authenticated successfully.
+			h.unsafeSendJson(Message{
+				Event: AuthenticationSuccessEvent,
+				Args:  []string{},
+			})
+
+			// Check if the client was refreshing their authentication token
+			// instead of authenticating for the first time.
+			if !newConnection {
+				// This prevents duplicate status messages as outlined in
+				// https://github.com/pterodactyl/panel/issues/2077
+				return nil
+			}
+
+			// On every authentication event, send the current server status back
+			// to the client. :)
+			state := h.server.GetState()
+			h.SendJson(&Message{
+				Event: server.StatusEvent,
+				Args:  []string{state},
+			})
+
+			// Only send the current disk usage if the server is offline, if docker container is running,
+			// Environment#EnableResourcePolling() will send this data to all clients.
+			if state == server.ProcessOfflineState {
+				_ = h.server.Filesystem.HasSpaceAvailable()
+
+				resources := server.ResourceUsage{
+					Memory:      0,
+					MemoryLimit: 0,
+					CpuAbsolute: 0.0,
+					Disk:        h.server.Resources.Disk,
+				}
+				resources.Network.RxBytes = 0
+				resources.Network.TxBytes = 0
+
+				b, _ := json.Marshal(resources)
+				h.SendJson(&Message{
+					Event: server.StatsEvent,
+					Args:  []string{string(b)},
+				})
+			}
+
+			return nil
+		}
+	case SetStateEvent:
+		{
+			switch strings.Join(m.Args, "") {
+			case "start":
+				if h.GetJwt().HasPermission(PermissionSendPowerStart) {
+					return h.server.Environment.Start()
+				}
+				break
+			case "stop":
+				if h.GetJwt().HasPermission(PermissionSendPowerStop) {
+					return h.server.Environment.Stop()
+				}
+				break
+			case "restart":
+				if h.GetJwt().HasPermission(PermissionSendPowerRestart) {
+					if err := h.server.Environment.WaitForStop(60, false); err != nil {
+						return err
+					}
+
+					return h.server.Environment.Start()
+				}
+				break
+			case "kill":
+				if h.GetJwt().HasPermission(PermissionSendPowerStop) {
+					return h.server.Environment.Terminate(os.Kill)
+				}
+				break
+			}
+
+			return nil
+		}
+	case SendServerLogsEvent:
+		{
+			if running, _ := h.server.Environment.IsRunning(); !running {
+				return nil
+			}
+
+			logs, err := h.server.Environment.Readlog(1024 * 16)
+			if err != nil {
+				return err
+			}
+
+			for _, line := range logs {
+				h.SendJson(&Message{
+					Event: server.ConsoleOutputEvent,
+					Args:  []string{line},
+				})
+			}
+
+			return nil
+		}
+	case SendCommandEvent:
+		{
+			if !h.GetJwt().HasPermission(PermissionSendCommand) {
+				return nil
+			}
+
+			if h.server.GetState() == server.ProcessOfflineState {
+				return nil
+			}
+
+			return h.server.Environment.SendCommand(strings.Join(m.Args, ""))
+		}
+	}
+
+	return nil
+}

server/archiver.go

@@ -0,0 +1,104 @@
+package server
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"github.com/mholt/archiver/v3"
+	"github.com/pterodactyl/wings/config"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+// Archiver represents a Server Archiver.
+type Archiver struct {
+	Server *Server
+}
+
+// ArchivePath returns the path to the server's archive.
+func (a *Archiver) ArchivePath() string {
+	return filepath.Join(config.Get().System.ArchiveDirectory, a.ArchiveName())
+}
+
+// ArchiveName returns the name of the server's archive.
+func (a *Archiver) ArchiveName() string {
+	return a.Server.Uuid + ".tar.gz"
+}
+
+// Exists returns a boolean based off if the archive exists.
+func (a *Archiver) Exists() bool {
+	if _, err := os.Stat(a.ArchivePath()); os.IsNotExist(err) {
+		return false
+	}
+
+	return true
+}
+
+// Stat stats the archive file.
+func (a *Archiver) Stat() (*Stat, error) {
+	return a.Server.Filesystem.unsafeStat(a.ArchivePath())
+}
+
+// Archive creates an archive of the server and deletes the previous one.
+func (a *Archiver) Archive() error {
+	path := a.Server.Filesystem.Path()
+
+	// Get the list of root files and directories to archive.
+	var files []string
+	fileInfo, err := ioutil.ReadDir(path)
+	if err != nil {
+		return err
+	}
+
+	for _, file := range fileInfo {
+		files = append(files, filepath.Join(path, file.Name()))
+	}
+
+	stat, err := a.Stat()
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+
+	// Check if the file exists.
+	if stat != nil {
+		if err := os.Remove(a.ArchivePath()); err != nil {
+			return err
+		}
+	}
+
+	return archiver.NewTarGz().Archive(files, a.ArchivePath())
+}
+
+// DeleteIfExists deletes the archive if it exists.
+func (a *Archiver) DeleteIfExists() error {
+	stat, err := a.Stat()
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+
+	// Check if the file exists.
+	if stat != nil {
+		if err := os.Remove(a.ArchivePath()); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Checksum computes a SHA256 checksum of the server's archive.
+func (a *Archiver) Checksum() (string, error) {
+	file, err := os.Open(a.ArchivePath())
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	hash := sha256.New()
+	if _, err := io.Copy(hash, file); err != nil {
+		return "", err
+	}
+
+	return hex.EncodeToString(hash.Sum(nil)), nil
+}

server/backup.go

@@ -0,0 +1,117 @@
+package server
+
+import (
+	"bufio"
+	"github.com/apex/log"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/api"
+	"github.com/pterodactyl/wings/server/backup"
+	"os"
+	"path"
+)
+
+// Notifies the panel of a backup's state and returns an error if one is encountered
+// while performing this action.
+func (s *Server) notifyPanelOfBackup(uuid string, ad *backup.ArchiveDetails, successful bool) error {
+	r := api.NewRequester()
+	rerr, err := r.SendBackupStatus(uuid, ad.ToRequest(successful))
+	if rerr != nil || err != nil {
+		if err != nil {
+			s.Log().WithFields(log.Fields{
+				"backup": uuid,
+				"error":  err,
+			}).Error("failed to notify panel of backup status due to internal code error")
+
+			return err
+		}
+
+		s.Log().WithField("backup", uuid).Warn(rerr.String())
+
+		return errors.New(rerr.String())
+	}
+
+	return nil
+}
+
+// Get all of the ignored files for a server based on its .pteroignore file in the root.
+func (s *Server) getServerwideIgnoredFiles() ([]string, error) {
+	var ignored []string
+
+	f, err := os.Open(path.Join(s.Filesystem.Path(), ".pteroignore"))
+	if err != nil {
+		if !os.IsNotExist(err) {
+			return nil, err
+		}
+	} else {
+		scanner := bufio.NewScanner(f)
+		for scanner.Scan() {
+			// Only include non-empty lines, for the sake of clarity...
+			if t := scanner.Text(); t != "" {
+				ignored = append(ignored, t)
+			}
+		}
+
+		if err := scanner.Err(); err != nil {
+			return nil, err
+		}
+	}
+
+	return ignored, nil
+}
+
+// Get the backup files to include when generating it.
+func (s *Server) GetIncludedBackupFiles(ignored []string) (*backup.IncludedFiles, error) {
+	// If no ignored files are present in the request, check for a .pteroignore file in the root
+	// of the server files directory, and use that to generate the backup.
+	if len(ignored) == 0 {
+		if i, err := s.getServerwideIgnoredFiles(); err != nil {
+			s.Log().WithField("error", err).Warn("failed to retrieve ignored files listing for server")
+		} else {
+			ignored = i
+		}
+	}
+
+	// Get the included files based on the root path and the ignored files provided.
+	return s.Filesystem.GetIncludedFiles(s.Filesystem.Path(), ignored)
+}
+
+// Performs a server backup and then emits the event over the server websocket. We
+// let the actual backup system handle notifying the panel of the status, but that
+// won't emit a websocket event.
+func (s *Server) Backup(b backup.BackupInterface) error {
+	// Get the included files based on the root path and the ignored files provided.
+	inc, err := s.GetIncludedBackupFiles(b.Ignored())
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	ad, err := b.Generate(inc, s.Filesystem.Path())
+	if err != nil {
+		if notifyError := s.notifyPanelOfBackup(b.Identifier(), &backup.ArchiveDetails{}, false); notifyError != nil {
+			s.Log().WithFields(log.Fields{
+				"backup": b.Identifier(),
+				"error":  err,
+			}).Warn("failed to notify panel of failed backup state")
+		}
+
+		return errors.WithStack(err)
+	}
+
+	// Try to notify the panel about the status of this backup. If for some reason this request
+	// fails, delete the archive from the daemon and return that error up the chain to the caller.
+	if notifyError := s.notifyPanelOfBackup(b.Identifier(), ad, true); notifyError != nil {
+		b.Remove()
+
+		return notifyError
+	}
+
+	// Emit an event over the socket so we can update the backup in realtime on
+	// the frontend for the server.
+	s.Events().PublishJson(BackupCompletedEvent+":"+b.Identifier(), map[string]interface{}{
+		"uuid":        b.Identifier(),
+		"sha256_hash": ad.Checksum,
+		"file_size":   ad.Size,
+	})
+
+	return nil
+}

server/backup/archiver.go

@@ -0,0 +1,111 @@
+package backup
+
+import (
+	"archive/tar"
+	"context"
+	"github.com/apex/log"
+	gzip "github.com/klauspost/pgzip"
+	"github.com/remeh/sizedwaitgroup"
+	"golang.org/x/sync/errgroup"
+	"io"
+	"os"
+	"strings"
+	"sync"
+)
+
+type Archive struct {
+	sync.Mutex
+
+	TrimPrefix string
+	Files      *IncludedFiles
+}
+
+// Creates an archive at dest with all of the files definied in the included files struct.
+func (a *Archive) Create(dest string, ctx context.Context) error {
+	f, err := os.OpenFile(dest, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	gzw := gzip.NewWriter(f)
+	defer gzw.Close()
+
+	tw := tar.NewWriter(gzw)
+	defer tw.Close()
+
+	wg := sizedwaitgroup.New(10)
+	g, ctx := errgroup.WithContext(ctx)
+	// Iterate over all of the files to be included and put them into the archive. This is
+	// done as a concurrent goroutine to speed things along. If an error is encountered at
+	// any step, the entire process is aborted.
+	for p, s := range a.Files.All() {
+		if (*s).IsDir() {
+			continue
+		}
+
+		pa := p
+		st := s
+
+		g.Go(func() error {
+			wg.Add()
+			defer wg.Done()
+
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			default:
+				return a.addToArchive(pa, st, tw)
+			}
+		})
+	}
+
+	// Block until the entire routine is completed.
+	if err := g.Wait(); err != nil {
+		f.Close()
+
+		// Attempt to remove the archive if there is an error, report that error to
+		// the logger if it fails.
+		if rerr := os.Remove(dest); rerr != nil && !os.IsNotExist(rerr) {
+			log.WithField("location", dest).Warn("failed to delete corrupted backup archive")
+		}
+
+		return err
+	}
+
+	return nil
+}
+
+// Adds a single file to the existing tar archive writer.
+func (a *Archive) addToArchive(p string, s *os.FileInfo, w *tar.Writer) error {
+	f, err := os.Open(p)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	st := *s
+	header := &tar.Header{
+		// Trim the long server path from the name of the file so that the resulting
+		// archive is exactly how the user would see it in the panel file manager.
+		Name:    strings.TrimPrefix(p, a.TrimPrefix),
+		Size:    st.Size(),
+		Mode:    int64(st.Mode()),
+		ModTime: st.ModTime(),
+	}
+
+	// These actions must occur sequentially, even if this function is called multiple
+	// in parallel. You'll get some nasty panic's otherwise.
+	a.Lock()
+	defer a.Unlock()
+
+	if err = w.WriteHeader(header); err != nil {
+		return err
+	}
+
+	if _, err := io.Copy(w, f); err != nil {
+		return err
+	}
+
+	return nil
+}

server/backup/backup.go

@@ -0,0 +1,154 @@
+package backup
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"github.com/apex/log"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/api"
+	"github.com/pterodactyl/wings/config"
+	"io"
+	"os"
+	"path"
+	"sync"
+)
+
+const (
+	LocalBackupAdapter = "wings"
+	S3BackupAdapter    = "s3"
+)
+
+type ArchiveDetails struct {
+	Checksum string `json:"checksum"`
+	Size     int64  `json:"size"`
+}
+
+// Returns a request object.
+func (ad *ArchiveDetails) ToRequest(successful bool) api.BackupRequest {
+	return api.BackupRequest{
+		Checksum:   ad.Checksum,
+		Size:       ad.Size,
+		Successful: successful,
+	}
+}
+
+type Backup struct {
+	// The UUID of this backup object. This must line up with a backup from
+	// the panel instance.
+	Uuid string `json:"uuid"`
+
+	// An array of files to ignore when generating this backup. This should be
+	// compatible with a standard .gitignore structure.
+	IgnoredFiles []string `json:"ignored_files"`
+}
+
+// noinspection GoNameStartsWithPackageName
+type BackupInterface interface {
+	// Returns the UUID of this backup as tracked by the panel instance.
+	Identifier() string
+
+	// Generates a backup in whatever the configured source for the specific
+	// implementation is.
+	Generate(*IncludedFiles, string) (*ArchiveDetails, error)
+
+	// Returns the ignored files for this backup instance.
+	Ignored() []string
+
+	// Returns a SHA256 checksum for the generated backup.
+	Checksum() ([]byte, error)
+
+	// Returns the size of the generated backup.
+	Size() (int64, error)
+
+	// Returns the path to the backup on the machine. This is not always the final
+	// storage location of the backup, simply the location we're using to store
+	// it until it is moved to the final spot.
+	Path() string
+
+	// Returns details about the archive.
+	Details() *ArchiveDetails
+
+	// Removes a backup file.
+	Remove() error
+}
+
+func (b *Backup) Identifier() string {
+	return b.Uuid
+}
+
+// Returns the path for this specific backup.
+func (b *Backup) Path() string {
+	return path.Join(config.Get().System.BackupDirectory, b.Identifier()+".tar.gz")
+}
+
+// Return the size of the generated backup.
+func (b *Backup) Size() (int64, error) {
+	st, err := os.Stat(b.Path())
+	if err != nil {
+		return 0, errors.WithStack(err)
+	}
+
+	return st.Size(), nil
+}
+
+// Returns the SHA256 checksum of a backup.
+func (b *Backup) Checksum() ([]byte, error) {
+	h := sha256.New()
+
+	f, err := os.Open(b.Path())
+	if err != nil {
+		return []byte{}, errors.WithStack(err)
+	}
+	defer f.Close()
+
+	if _, err := io.Copy(h, f); err != nil {
+		return []byte{}, errors.WithStack(err)
+	}
+
+	return h.Sum(nil), nil
+}
+
+// Returns details of the archive by utilizing two go-routines to get the checksum and
+// the size of the archive.
+func (b *Backup) Details() *ArchiveDetails {
+	wg := sync.WaitGroup{}
+	wg.Add(2)
+
+	var checksum string
+	// Calculate the checksum for the file.
+	go func() {
+		defer wg.Done()
+
+		resp, err := b.Checksum()
+		if err != nil {
+			log.WithFields(log.Fields{
+				"backup": b.Identifier(),
+				"error": err,
+			}).Error("failed to calculate checksum for backup")
+		}
+
+		checksum = hex.EncodeToString(resp)
+	}()
+
+	var sz int64
+	go func() {
+		defer wg.Done()
+
+		if s, err := b.Size(); err != nil {
+			return
+		} else {
+			sz = s
+		}
+	}()
+
+	wg.Wait()
+
+	return &ArchiveDetails{
+		Checksum: checksum,
+		Size:     sz,
+	}
+}
+
+func (b *Backup) Ignored() []string {
+	return b.IgnoredFiles
+}

server/backup/backup_local.go

@@ -0,0 +1,55 @@
+package backup
+
+import (
+	"context"
+	"github.com/pkg/errors"
+	"os"
+)
+
+type LocalBackup struct {
+	Backup
+}
+
+var _ BackupInterface = (*LocalBackup)(nil)
+
+// Locates the backup for a server and returns the local path. This will obviously only
+// work if the backup was created as a local backup.
+func LocateLocal(uuid string) (*LocalBackup, os.FileInfo, error) {
+	b := &LocalBackup{
+		Backup{
+			Uuid:         uuid,
+			IgnoredFiles: nil,
+		},
+	}
+
+	st, err := os.Stat(b.Path())
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if st.IsDir() {
+		return nil, nil, errors.New("invalid archive found; is directory")
+	}
+
+	return b, st, nil
+}
+
+// Removes a backup from the system.
+func (b *LocalBackup) Remove() error {
+	return os.Remove(b.Path())
+}
+
+// Generates a backup of the selected files and pushes it to the defined location
+// for this instance.
+func (b *LocalBackup) Generate(included *IncludedFiles, prefix string) (*ArchiveDetails, error) {
+	a := &Archive{
+		TrimPrefix: prefix,
+		Files:      included,
+	}
+
+	if err := a.Create(b.Path(), context.Background()); err != nil {
+		return nil, err
+	}
+
+	return b.Details(), nil
+}

server/backup/backup_request.go

@@ -0,0 +1,46 @@
+package backup
+
+import (
+	"fmt"
+	"github.com/pkg/errors"
+)
+
+type Request struct {
+	Adapter      string   `json:"adapter"`
+	Uuid         string   `json:"uuid"`
+	IgnoredFiles []string `json:"ignored_files"`
+	PresignedUrl string   `json:"presigned_url"`
+}
+
+// Generates a new local backup struct.
+func (r *Request) NewLocalBackup() (*LocalBackup, error) {
+	if r.Adapter != LocalBackupAdapter {
+		return nil, errors.New(fmt.Sprintf("cannot create local backup using [%s] adapter", r.Adapter))
+	}
+
+	return &LocalBackup{
+		Backup{
+			Uuid:         r.Uuid,
+			IgnoredFiles: r.IgnoredFiles,
+		},
+	}, nil
+}
+
+// Generates a new S3 backup struct.
+func (r *Request) NewS3Backup() (*S3Backup, error) {
+	if r.Adapter != S3BackupAdapter {
+		return nil, errors.New(fmt.Sprintf("cannot create s3 backup using [%s] adapter", r.Adapter))
+	}
+
+	if len(r.PresignedUrl) == 0 {
+		return nil, errors.New("a valid presigned S3 upload URL must be provided to use the [s3] adapter")
+	}
+
+	return &S3Backup{
+		Backup: Backup{
+			Uuid:         r.Uuid,
+			IgnoredFiles: r.IgnoredFiles,
+		},
+		PresignedUrl: r.PresignedUrl,
+	}, nil
+}

server/backup/backup_s3.go

@@ -0,0 +1,86 @@
+package backup
+
+import (
+	"context"
+	"fmt"
+	"github.com/apex/log"
+	"io"
+	"net/http"
+	"os"
+	"strconv"
+)
+
+type S3Backup struct {
+	Backup
+
+	// The pre-signed upload endpoint for the generated backup. This must be
+	// provided otherwise this request will fail. This allows us to keep all
+	// of the keys off the daemon instances and the panel can handle generating
+	// the credentials for us.
+	PresignedUrl string
+}
+
+var _ BackupInterface = (*S3Backup)(nil)
+
+// Generates a new backup on the disk, moves it into the S3 bucket via the provided
+// presigned URL, and then deletes the backup from the disk.
+func (s *S3Backup) Generate(included *IncludedFiles, prefix string) (*ArchiveDetails, error) {
+	defer s.Remove()
+
+	a := &Archive{
+		TrimPrefix: prefix,
+		Files:      included,
+	}
+
+	if err := a.Create(s.Path(), context.Background()); err != nil {
+		return nil, err
+	}
+
+	rc, err := os.Open(s.Path())
+	if err != nil {
+		return nil, err
+	}
+	defer rc.Close()
+
+	if resp, err := s.generateRemoteRequest(rc); err != nil {
+		return nil, err
+	} else {
+		resp.Body.Close()
+
+		if resp.StatusCode != http.StatusOK {
+			return nil, fmt.Errorf("failed to put S3 object, %d:%s", resp.StatusCode, resp.Status)
+		}
+	}
+
+	return s.Details(), err
+}
+
+// Removes a backup from the system.
+func (s *S3Backup) Remove() error {
+	return os.Remove(s.Path())
+}
+
+// Generates the remote S3 request and begins the upload.
+func (s *S3Backup) generateRemoteRequest(rc io.ReadCloser) (*http.Response, error) {
+	r, err := http.NewRequest(http.MethodPut, s.PresignedUrl, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if sz, err := s.Size(); err != nil {
+		return nil, err
+	} else {
+		r.ContentLength = sz
+		r.Header.Add("Content-Length", strconv.Itoa(int(sz)))
+		r.Header.Add("Content-Type", "application/x-gzip")
+	}
+
+	r.Body = rc
+	
+	log.WithFields(log.Fields{
+		"endpoint": s.PresignedUrl,
+		"headers": r.Header,
+	}).Debug("uploading backup to remote S3 endpoint")
+
+	return http.DefaultClient.Do(r)
+}

server/backup/included.go

@@ -0,0 +1,31 @@
+package backup
+
+import (
+	"os"
+	"sync"
+)
+
+type IncludedFiles struct {
+	sync.RWMutex
+	files map[string]*os.FileInfo
+}
+
+// Pushes an additional file or folder onto the struct.
+func (i *IncludedFiles) Push(info *os.FileInfo, p string) {
+	i.Lock()
+	defer i.Unlock()
+
+	if i.files == nil {
+		i.files = make(map[string]*os.FileInfo)
+	}
+
+	i.files[p] = info
+}
+
+// Returns all of the files that were marked as being included.
+func (i *IncludedFiles) All() map[string]*os.FileInfo {
+	i.RLock()
+	defer i.RUnlock()
+
+	return i.files
+}

server/collection.go

@@ -4,34 +4,35 @@ import "sync"
 
 type Collection struct {
 	items []*Server
-	mutex *sync.Mutex
+	sync.RWMutex
 }
 
 // Create a new collection from a slice of servers.
 func NewCollection(servers []*Server) *Collection {
 	return &Collection{
 		items: servers,
-		mutex: &sync.Mutex{},
 	}
 }
 
 // Return all of the items in the collection.
 func (c *Collection) All() []*Server {
+	c.RLock()
+	defer c.RUnlock()
+
 	return c.items
 }
 
 // Adds an item to the collection store.
 func (c *Collection) Add(s *Server) {
-	c.mutex.Lock()
-	defer c.mutex.Unlock()
-
+	c.Lock()
 	c.items = append(c.items, s)
+	c.Unlock()
 }
 
 // Returns only those items matching the filter criteria.
 func (c *Collection) Filter(filter func(*Server) bool) []*Server {
-	c.mutex.Lock()
-	defer c.mutex.Unlock()
+	c.RLock()
+	defer c.RUnlock()
 
 	r := make([]*Server, 0)
 	for _, v := range c.items {
@@ -46,6 +47,9 @@ func (c *Collection) Filter(filter func(*Server) bool) []*Server {
 // Returns a single element from the collection matching the filter. If nothing is
 // found a nil result is returned.
 func (c *Collection) Find(filter func(*Server) bool) *Server {
+	c.RLock()
+	defer c.RUnlock()
+
 	for _, v := range c.items {
 		if filter(v) {
 			return v
@@ -57,8 +61,8 @@ func (c *Collection) Find(filter func(*Server) bool) *Server {
 
 // Removes all items from the collection that match the filter function.
 func (c *Collection) Remove(filter func(*Server) bool) {
-	c.mutex.Lock()
-	defer c.mutex.Unlock()
+	c.Lock()
+	defer c.Unlock()
 
 	r := make([]*Server, 0)
 	for _, v := range c.items {

server/config_parser.go

@@ -2,7 +2,6 @@ package server
 
 import (
 	"github.com/pterodactyl/wings/parser"
-	"go.uber.org/zap"
 	"sync"
 )
 
@@ -17,15 +16,15 @@ func (s *Server) UpdateConfigurationFiles() {
 		go func(f parser.ConfigurationFile, server *Server) {
 			defer wg.Done()
 
-			p, err := s.Filesystem.SafePath(f.FileName)
+			p, err := server.Filesystem.SafePath(f.FileName)
 			if err != nil {
-				zap.S().Errorw("failed to generate safe path for configuration file", zap.String("server", server.Uuid), zap.Error(err))
+				server.Log().WithField("error", err).Error("failed to generate safe path for configuration file")
 
 				return
 			}
 
 			if err := f.Parse(p, false); err != nil {
-				zap.S().Errorw("failed to parse and update server configuration file", zap.String("server", server.Uuid), zap.Error(err))
+				server.Log().WithField("error", err).Error("failed to parse and update server configuration file")
 			}
 		}(v, s)
 	}

server/configuration.go

@@ -1,31 +0,0 @@
-package server
-
-import (
-	"github.com/pkg/errors"
-	"gopkg.in/yaml.v2"
-	"os"
-)
-
-// Writes the server configuration to the disk. The saved configuration will be returned
-// back to the calling function to use if desired.
-func (s *Server) WriteConfigurationToDisk() ([]byte, error) {
-	s.mutex.Lock()
-	defer s.mutex.Unlock()
-
-	f, err := os.Create("data/servers/" + s.Uuid + ".yml")
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-	defer f.Close()
-
-	b, err := yaml.Marshal(&s)
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-
-	if _, err := f.Write(b); err != nil {
-		return nil, errors.WithStack(err)
-	}
-
-	return b, nil
-}

server/console.go

@@ -1,9 +1,13 @@
 package server
 
-import "io"
+import (
+	"fmt"
+	"github.com/mitchellh/colorstring"
+	"io"
+)
 
 type Console struct {
-	Server *Server
+	Server      *Server
 	HandlerFunc *func(string)
 }
 
@@ -18,4 +22,13 @@ func (c Console) Write(b []byte) (int, error) {
 	}
 
 	return len(b), nil
-}
+}
+
+// Sends output to the server console formatted to appear correctly as being sent
+// from Wings.
+func (s *Server) PublishConsoleOutputFromDaemon(data string) {
+	s.Events().Publish(
+		ConsoleOutputEvent,
+		colorstring.Color(fmt.Sprintf("[yellow][bold][Pterodactyl Daemon]:[default] %s", data)),
+	)
+}

server/crash.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/config"
-	"go.uber.org/zap"
 	"time"
 )
 
@@ -27,17 +26,15 @@ type CrashDetection struct {
 //
 // If the server is determined to have crashed, the process will be restarted and the
 // counter for the server will be incremented.
-//
-// @todo output event to server console
 func (s *Server) handleServerCrash() error {
 	// No point in doing anything here if the server isn't currently offline, there
 	// is no reason to do a crash detection event. If the server crash detection is
 	// disabled we want to skip anything after this as well.
-	if s.State != ProcessOfflineState || !s.CrashDetection.Enabled {
+	if s.GetState() != ProcessOfflineState || !s.CrashDetection.Enabled {
 		if !s.CrashDetection.Enabled {
-			zap.S().Debugw("server triggered crash detection but handler is disabled for server process", zap.String("server", s.Uuid))
+			s.Log().Debug("server triggered crash detection but handler is disabled for server process")
 
-			s.SendConsoleOutputFromDaemon("Server detected as crashed; crash detection is disabled for this instance.")
+			s.PublishConsoleOutputFromDaemon("Server detected as crashed; crash detection is disabled for this instance.")
 		}
 
 		return nil
@@ -51,20 +48,20 @@ func (s *Server) handleServerCrash() error {
 	// If the system is not configured to detect a clean exit code as a crash, and the
 	// crash is not the result of the program running out of memory, do nothing.
 	if exitCode == 0 && !oomKilled && !config.Get().System.DetectCleanExitAsCrash {
-		zap.S().Debugw("server exited with successful code; system configured to not detect as crash", zap.String("server", s.Uuid))
+		s.Log().Debug("server exited with successful exit code; system is configured to not detect this as a crash")
 
 		return nil
 	}
 
-	s.SendConsoleOutputFromDaemon("---------- Detected server process in a crashed state! ----------")
-	s.SendConsoleOutputFromDaemon(fmt.Sprintf("Exit code: %d", exitCode))
-	s.SendConsoleOutputFromDaemon(fmt.Sprintf("Out of memory: %t", oomKilled))
+	s.PublishConsoleOutputFromDaemon("---------- Detected server process in a crashed state! ----------")
+	s.PublishConsoleOutputFromDaemon(fmt.Sprintf("Exit code: %d", exitCode))
+	s.PublishConsoleOutputFromDaemon(fmt.Sprintf("Out of memory: %t", oomKilled))
 
 	c := s.CrashDetection.lastCrash
 	// If the last crash time was within the last 60 seconds we do not want to perform
 	// an automatic reboot of the process. Return an error that can be handled.
 	if !c.IsZero() && c.Add(time.Second * 60).After(time.Now()) {
-		s.SendConsoleOutputFromDaemon("Aborting automatic reboot: last crash occurred less than 60 seconds ago.")
+		s.PublishConsoleOutputFromDaemon("Aborting automatic reboot: last crash occurred less than 60 seconds ago.")
 
 		return &crashTooFrequent{}
 	}

server/environment.go

@@ -31,6 +31,11 @@ type Environment interface {
 	// not be returned.
 	Stop() error
 
+	// Waits for a server instance to stop gracefully. If the server is still detected
+	// as running after seconds, an error will be returned, or the server will be terminated
+	// depending on the value of the second argument.
+	WaitForStop(seconds int, terminate bool) error
+
 	// Determines if the server instance exists. For example, in a docker environment
 	// this should confirm that the container is created and in a bootable state. In
 	// a basic CLI environment this can probably just return true right away.

server/environment_docker.go

@@ -6,6 +6,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"github.com/apex/log"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/mount"
@@ -14,7 +15,7 @@ import (
 	"github.com/docker/go-connections/nat"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/api"
-	"go.uber.org/zap"
+	"github.com/pterodactyl/wings/config"
 	"io"
 	"os"
 	"strconv"
@@ -26,13 +27,6 @@ import (
 type DockerEnvironment struct {
 	Server *Server
 
-	// The user ID that containers should be running as.
-	User int
-
-	// Defines the configuration for the Docker instance that will allow us to connect
-	// and create and modify containers.
-	TimezonePath string
-
 	// The Docker client being used for this instance.
 	Client *client.Client
 
@@ -51,22 +45,18 @@ type DockerEnvironment struct {
 }
 
 // Creates a new base Docker environment. A server must still be attached to it.
-func NewDockerEnvironment(opts ...func(*DockerEnvironment)) (*DockerEnvironment, error) {
+func NewDockerEnvironment(server *Server) error {
 	cli, err := client.NewClientWithOpts(client.FromEnv)
 	if err != nil {
-		return nil, err
+		return err
 	}
 
-	env := &DockerEnvironment{
-		User:   1000,
+	server.Environment = &DockerEnvironment{
+		Server: server,
 		Client: cli,
 	}
 
-	for _, opt := range opts {
-		opt(env)
-	}
-
-	return env, nil
+	return nil
 }
 
 // Ensure that the Docker environment is always implementing all of the methods
@@ -132,11 +122,13 @@ func (d *DockerEnvironment) InSituUpdate() error {
 		return errors.WithStack(err)
 	}
 
+	ctx, _ := context.WithTimeout(context.Background(), time.Second * 10)
 	u := container.UpdateConfig{
 		Resources: d.getResourcesForServer(),
 	}
 
-	if _, err := d.Client.ContainerUpdate(context.Background(), d.Server.Uuid, u); err != nil {
+	d.Server.Log().WithField("limits", fmt.Sprintf("%+v", u.Resources)).Debug("updating server container on-the-fly with passed limits")
+	if _, err := d.Client.ContainerUpdate(ctx, d.Server.Uuid, u); err != nil {
 		return errors.WithStack(err)
 	}
 
@@ -151,11 +143,15 @@ func (d *DockerEnvironment) InSituUpdate() error {
 // state. This ensures that unexpected container deletion while Wings is running does
 // not result in the server becoming unbootable.
 func (d *DockerEnvironment) OnBeforeStart() error {
-	zap.S().Infow("syncing server configuration with Panel", zap.String("server", d.Server.Uuid))
+	d.Server.Log().Info("syncing server configuration with panel")
 	if err := d.Server.Sync(); err != nil {
 		return err
 	}
 
+	if !d.Server.Filesystem.HasSpaceAvailable() {
+		return errors.New("cannot start server, not enough disk space available")
+	}
+
 	// Always destroy and re-create the server container to ensure that synced data from
 	// the Panel is used.
 	if err := d.Client.ContainerRemove(context.Background(), d.Server.Uuid, types.ContainerRemoveOptions{RemoveVolumes: true}); err != nil {
@@ -188,6 +184,10 @@ func (d *DockerEnvironment) Start() error {
 	// that point.
 	defer func() {
 		if sawError {
+			// If we don't set it to stopping first, you'll trigger crash detection which
+			// we don't want to do at this point since it'll just immediately try to do the
+			// exact same action that lead to it crashing in the first place...
+			d.Server.SetState(ProcessStoppingState)
 			d.Server.SetState(ProcessOfflineState)
 		}
 	}()
@@ -202,19 +202,31 @@ func (d *DockerEnvironment) Start() error {
 		return &suspendedError{}
 	}
 
-	c, err := d.Client.ContainerInspect(context.Background(), d.Server.Uuid)
-	if err != nil && !client.IsErrNotFound(err) {
-		return errors.WithStack(err)
-	}
+	if c, err := d.Client.ContainerInspect(context.Background(), d.Server.Uuid); err != nil {
+		// Do nothing if the container is not found, we just don't want to continue
+		// to the next block of code here. This check was inlined here to guard againt
+		// a nil-pointer when checking c.State below.
+		//
+		// @see https://github.com/pterodactyl/panel/issues/2000
+		if !client.IsErrNotFound(err) {
+			return errors.WithStack(err)
+		}
+	} else {
+		// If the server is running update our internal state and continue on with the attach.
+		if c.State.Running {
+			d.Server.SetState(ProcessRunningState)
 
-	// No reason to try starting a container that is already running.
-	if c.State.Running {
-		d.Server.SetState(ProcessRunningState)
-		if !d.attached {
 			return d.Attach()
 		}
 
-		return nil
+		// Truncate the log file so we don't end up outputting a bunch of useless log information
+		// to the websocket and whatnot. Check first that the path and file exist before trying
+		// to truncate them.
+		if _, err := os.Stat(c.LogPath); err == nil {
+			if err := os.Truncate(c.LogPath, 0); err != nil {
+				return errors.WithStack(err)
+			}
+		}
 	}
 
 	d.Server.SetState(ProcessStartingState)
@@ -229,15 +241,6 @@ func (d *DockerEnvironment) Start() error {
 		return errors.WithStack(err)
 	}
 
-	// Truncate the log file so we don't end up outputting a bunch of useless log information
-	// to the websocket and whatnot. Check first that the path and file exist before trying
-	// to truncate them.
-	if _, err := os.Stat(c.LogPath); err == nil {
-		if err := os.Truncate(c.LogPath, 0); err != nil {
-			return errors.WithStack(err)
-		}
-	}
-
 	// Update the configuration files defined for the server before beginning the boot process.
 	// This process executes a bunch of parallel updates, so we just block until that process
 	// is completed. Any errors as a result of this will just be bubbled out in the logger,
@@ -251,8 +254,8 @@ func (d *DockerEnvironment) Start() error {
 		return errors.WithStack(err)
 	}
 
-	opts := types.ContainerStartOptions{}
-	if err := d.Client.ContainerStart(context.Background(), d.Server.Uuid, opts); err != nil {
+	ctx, _ := context.WithTimeout(context.Background(), time.Second * 10)
+	if err := d.Client.ContainerStart(ctx, d.Server.Uuid, types.ContainerStartOptions{}); err != nil {
 		return errors.WithStack(err)
 	}
 
@@ -280,6 +283,44 @@ func (d *DockerEnvironment) Stop() error {
 	return d.Client.ContainerStop(context.Background(), d.Server.Uuid, &t)
 }
 
+// Attempts to gracefully stop a server using the defined stop command. If the server
+// does not stop after seconds have passed, an error will be returned, or the instance
+// will be terminated forcefully depending on the value of the second argument.
+func (d *DockerEnvironment) WaitForStop(seconds int, terminate bool) error {
+	if d.Server.GetState() == ProcessOfflineState {
+		return nil
+	}
+
+	if err := d.Stop(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(seconds)*time.Second)
+	defer cancel()
+
+	// Block the return of this function until the container as been marked as no
+	// longer running. If this wait does not end by the time seconds have passed,
+	// attempt to terminate the container, or return an error.
+	ok, errChan := d.Client.ContainerWait(ctx, d.Server.Uuid, container.WaitConditionNotRunning)
+	select {
+	case <-ctx.Done():
+		if ctxErr := ctx.Err(); ctxErr != nil {
+			if terminate {
+				return d.Terminate(os.Kill)
+			}
+
+			return errors.WithStack(ctxErr)
+		}
+	case err := <-errChan:
+		if err != nil {
+			return errors.WithStack(err)
+		}
+	case <-ok:
+	}
+
+	return nil
+}
+
 // Forcefully terminates the container using the signal passed through.
 func (d *DockerEnvironment) Terminate(signal os.Signal) error {
 	ctx := context.Background()
@@ -305,11 +346,24 @@ func (d *DockerEnvironment) Terminate(signal os.Signal) error {
 func (d *DockerEnvironment) Destroy() error {
 	ctx := context.Background()
 
-	return d.Client.ContainerRemove(ctx, d.Server.Uuid, types.ContainerRemoveOptions{
+	// Avoid crash detection firing off.
+	d.Server.SetState(ProcessStoppingState)
+
+	err := d.Client.ContainerRemove(ctx, d.Server.Uuid, types.ContainerRemoveOptions{
 		RemoveVolumes: true,
 		RemoveLinks:   false,
 		Force:         true,
 	})
+
+	// Don't trigger a destroy failure if we try to delete a container that does not
+	// exist on the system. We're just a step ahead of ourselves in that case.
+	//
+	// @see https://github.com/pterodactyl/panel/issues/2001
+	if err != nil && client.IsErrNotFound(err) {
+		return nil
+	}
+
+	return err
 }
 
 // Determine the container exit state and return the exit code and wether or not
@@ -317,6 +371,19 @@ func (d *DockerEnvironment) Destroy() error {
 func (d *DockerEnvironment) ExitState() (uint32, bool, error) {
 	c, err := d.Client.ContainerInspect(context.Background(), d.Server.Uuid)
 	if err != nil {
+		// I'm not entirely sure how this can happen to be honest. I tried deleting a
+		// container _while_ a server was running and wings gracefully saw the crash and
+		// created a new container for it.
+		//
+		// However, someone reported an error in Discord about this scenario happening,
+		// so I guess this should prevent it? They didn't tell me how they caused it though
+		// so thats a mystery that will have to go unsolved.
+		//
+		// @see https://github.com/pterodactyl/panel/issues/2003
+		if client.IsErrNotFound(err) {
+			return 1, false, nil
+		}
+
 		return 0, false, errors.WithStack(err)
 	}
 
@@ -354,8 +421,12 @@ func (d *DockerEnvironment) Attach() error {
 		Server: d.Server,
 	}
 
-	d.EnableResourcePolling()
 	d.attached = true
+	go func() {
+		if err := d.EnableResourcePolling(); err != nil {
+			d.Server.Log().WithField("error", errors.WithStack(err)).Warn("failed to enable resource polling on server")
+		}
+	}()
 
 	go func() {
 		defer d.stream.Close()
@@ -397,11 +468,11 @@ func (d *DockerEnvironment) FollowConsoleOutput() error {
 
 		s := bufio.NewScanner(r)
 		for s.Scan() {
-			d.Server.Emit(ConsoleOutputEvent, s.Text())
+			d.Server.Events().Publish(ConsoleOutputEvent, s.Text())
 		}
 
 		if err := s.Err(); err != nil {
-			zap.S().Warnw("error processing scanner line in console output", zap.String("server", d.Server.Uuid), zap.Error(err))
+			d.Server.Log().WithField("error", err).Warn("error processing scanner line in console output")
 		}
 	}(reader)
 
@@ -412,7 +483,7 @@ func (d *DockerEnvironment) FollowConsoleOutput() error {
 // information, instead just sit there with an async process that lets Docker stream all of this data
 // to us automatically.
 func (d *DockerEnvironment) EnableResourcePolling() error {
-	if d.Server.State == ProcessOfflineState {
+	if d.Server.GetState() == ProcessOfflineState {
 		return errors.New("cannot enable resource polling on a server that is not running")
 	}
 
@@ -430,20 +501,23 @@ func (d *DockerEnvironment) EnableResourcePolling() error {
 			var v *types.StatsJSON
 
 			if err := dec.Decode(&v); err != nil {
-				zap.S().Warnw("encountered error processing server stats; stopping collection", zap.Error(err))
+				if err != io.EOF {
+					d.Server.Log().WithField("error", err).Warn("encountered error processing server stats, stopping collection")
+				}
+
 				d.DisableResourcePolling()
 				return
 			}
 
 			// Disable collection if the server is in an offline state and this process is
 			// still running.
-			if s.State == ProcessOfflineState {
+			if s.GetState() == ProcessOfflineState {
 				d.DisableResourcePolling()
 				return
 			}
 
 			s.Resources.CpuAbsolute = s.Resources.CalculateAbsoluteCpu(&v.PreCPUStats, &v.CPUStats)
-			s.Resources.Memory = v.MemoryStats.Usage
+			s.Resources.Memory = s.Resources.CalculateDockerMemory(v.MemoryStats)
 			s.Resources.MemoryLimit = v.MemoryStats.Limit
 
 			// Why you ask? This already has the logic for caching disk space in use and then
@@ -456,7 +530,7 @@ func (d *DockerEnvironment) EnableResourcePolling() error {
 			}
 
 			b, _ := json.Marshal(s.Resources)
-			s.Emit(StatsEvent, string(b))
+			s.Events().Publish(StatsEvent, string(b))
 		}
 	}(d.Server)
 
@@ -479,17 +553,51 @@ func (d *DockerEnvironment) DisableResourcePolling() error {
 	return errors.WithStack(err)
 }
 
-// Pulls the image from Docker.
+// Pulls the image from Docker. If there is an error while pulling the image from the source
+// but the image already exists locally, we will report that error to the logger but continue
+// with the process.
+//
+// The reasoning behind this is that Quay has had some serious outages as of late, and we don't
+// need to block all of the servers from booting just because of that. I'd imagine in a lot of
+// cases an outage shouldn't affect users too badly. It'll at least keep existing servers working
+// correctly if anything.
 //
 // @todo handle authorization & local images
 func (d *DockerEnvironment) ensureImageExists(c *client.Client) error {
-	out, err := c.ImagePull(context.Background(), d.Server.Container.Image, types.ImagePullOptions{All: false})
+	// Give it up to 15 minutes to pull the image. I think this should cover 99.8% of cases where an
+	// image pull might fail. I can't imagine it will ever take more than 15 minutes to fully pull
+	// an image. Let me know when I am inevitably wrong here...
+	ctx, _ := context.WithTimeout(context.Background(), time.Minute*15)
+
+	out, err := c.ImagePull(ctx, d.Server.Container.Image, types.ImagePullOptions{All: false})
 	if err != nil {
+		images, ierr := c.ImageList(ctx, types.ImageListOptions{})
+		if ierr != nil {
+			// Well damn, something has gone really wrong here, just go ahead and abort there
+			// isn't much anything we can do to try and self-recover from this.
+			return ierr
+		}
+
+		for _, img := range images {
+			for _, t := range img.RepoTags {
+				if t == d.Server.Container.Image {
+					d.Server.Log().WithFields(log.Fields{
+						"image": d.Server.Container.Image,
+						"error": errors.New(err.Error()),
+					}).Warn("unable to pull requested image from remote source, however the image exists locally")
+
+					// Okay, we found a matching container image, in that case just go ahead and return
+					// from this function, since there is nothing else we need to do here.
+					return nil
+				}
+			}
+		}
+
 		return err
 	}
 	defer out.Close()
 
-	zap.S().Debugw("pulling docker image... this could take a bit of time", zap.String("image", d.Server.Container.Image))
+	log.WithField("image", d.Server.Container.Image).Debug("pulling docker image... this could take a bit of time")
 
 	// I'm not sure what the best approach here is, but this will block execution until the image
 	// is done being pulled, which is what we need.
@@ -507,8 +615,6 @@ func (d *DockerEnvironment) ensureImageExists(c *client.Client) error {
 
 // Creates a new container for the server using all of the data that is currently
 // available for it. If the container already exists it will be returned.
-//
-// @todo pull the image being requested if it doesn't exist currently.
 func (d *DockerEnvironment) Create() error {
 	ctx := context.Background()
 	cli, err := client.NewClientWithOpts(client.FromEnv)
@@ -537,7 +643,7 @@ func (d *DockerEnvironment) Create() error {
 
 	conf := &container.Config{
 		Hostname:     "container",
-		User:         strconv.Itoa(d.User),
+		User:         strconv.Itoa(config.Get().System.User.Uid),
 		AttachStdin:  true,
 		AttachStdout: true,
 		AttachStderr: true,
@@ -550,7 +656,8 @@ func (d *DockerEnvironment) Create() error {
 		Env:   d.environmentVariables(),
 
 		Labels: map[string]string{
-			"Service": "Pterodactyl",
+			"Service":       "Pterodactyl",
+			"ContainerType": "server_process",
 		},
 	}
 
@@ -558,9 +665,7 @@ func (d *DockerEnvironment) Create() error {
 		PortBindings: d.portBindings(),
 
 		// Configure the mounts for this container. First mount the server data directory
-		// into the container as a r/w bind. Additionally mount the host timezone data into
-		// the container as a readonly bind so that software running in the container uses
-		// the same time as the host system.
+		// into the container as a r/w bind.
 		Mounts: []mount.Mount{
 			{
 				Target:   "/home/container",
@@ -568,12 +673,6 @@ func (d *DockerEnvironment) Create() error {
 				Type:     mount.TypeBind,
 				ReadOnly: false,
 			},
-			{
-				Target:   d.TimezonePath,
-				Source:   d.TimezonePath,
-				Type:     mount.TypeBind,
-				ReadOnly: true,
-			},
 		},
 
 		// Configure the /tmp folder mapping in containers. This is necessary for some
@@ -586,8 +685,7 @@ func (d *DockerEnvironment) Create() error {
 		// from the Panel.
 		Resources: d.getResourcesForServer(),
 
-		// @todo make this configurable again
-		DNS: []string{"1.1.1.1", "8.8.8.8"},
+		DNS: config.Get().Docker.Network.Dns,
 
 		// Configure logging for the container to make it easier on the Daemon to grab
 		// the server output. Ensure that we don't use too much space on the host machine
@@ -607,7 +705,7 @@ func (d *DockerEnvironment) Create() error {
 			"setpcap", "mknod", "audit_write", "net_raw", "dac_override",
 			"fowner", "fsetid", "net_bind_service", "sys_chroot", "setfcap",
 		},
-		NetworkMode: "pterodactyl_nw",
+		NetworkMode: container.NetworkMode(config.Get().Docker.Network.Mode),
 	}
 
 	if _, err := cli.ContainerCreate(ctx, conf, hostConf, nil, d.Server.Uuid); err != nil {
@@ -708,7 +806,10 @@ func (d *DockerEnvironment) parseLogToStrings(b []byte) ([]string, error) {
 
 // Returns the environment variables for a server in KEY="VALUE" form.
 func (d *DockerEnvironment) environmentVariables() []string {
+	zone, _ := time.Now().In(time.Local).Zone()
+
 	var out = []string{
+		fmt.Sprintf("TZ=%s", zone),
 		fmt.Sprintf("STARTUP=%s", d.Server.Invocation),
 		fmt.Sprintf("SERVER_MEMORY=%d", d.Server.Build.MemoryLimit),
 		fmt.Sprintf("SERVER_IP=%s", d.Server.Allocations.DefaultMapping.Ip),
@@ -723,7 +824,7 @@ eloop:
 			}
 		}
 
-		out = append(out, fmt.Sprintf("%s=\"%s\"", strings.ToUpper(k), v))
+		out = append(out, fmt.Sprintf("%s=%s", strings.ToUpper(k), v))
 	}
 
 	return out
@@ -778,16 +879,24 @@ func (d *DockerEnvironment) exposedPorts() nat.PortSet {
 
 // Formats the resources available to a server instance in such as way that Docker will
 // generate a matching environment in the container.
+//
+// This will set the actual memory limit on the container using the multiplier which is the
+// hard limit for the container (after which will result in a crash). We then set the
+// reservation to be the expected memory limit based on simply multiplication.
+//
+// The swap value is either -1 to disable it, or set to the value of the hard memory limit
+// plus the additional swap assigned to the server since Docker expects this value to be
+// the same or higher than the memory limit.
 func (d *DockerEnvironment) getResourcesForServer() container.Resources {
 	return container.Resources{
-		// @todo memory limit should be slightly higher than the reservation
-		Memory:            d.Server.Build.MemoryLimit * 1000000,
-		MemoryReservation: d.Server.Build.MemoryLimit * 1000000,
+		Memory:            d.Server.Build.BoundedMemoryLimit(),
+		MemoryReservation: d.Server.Build.MemoryLimit * 1_000_000,
 		MemorySwap:        d.Server.Build.ConvertedSwap(),
 		CPUQuota:          d.Server.Build.ConvertedCpuLimit(),
-		CPUPeriod:         100000,
+		CPUPeriod:         100_000,
 		CPUShares:         1024,
 		BlkioWeight:       d.Server.Build.IoWeight,
 		OomKillDisable:    &d.Server.Container.OomDisabled,
+		CpusetCpus:        d.Server.Build.Threads,
 	}
 }

server/events.go

@@ -1,63 +1,120 @@
 package server
 
 import (
-	"fmt"
-	"github.com/mitchellh/colorstring"
+	"encoding/json"
+	"strings"
+	"sync"
 )
 
-type EventListeners map[string][]EventListenerFunction
-
-type EventListenerFunction *func(string)
-
 // Defines all of the possible output events for a server.
 // noinspection GoNameStartsWithPackageName
 const (
-	ConsoleOutputEvent = "console output"
-	StatusEvent        = "status"
-	StatsEvent         = "stats"
+	DaemonMessageEvent   = "daemon message"
+	InstallOutputEvent   = "install output"
+	ConsoleOutputEvent   = "console output"
+	StatusEvent          = "status"
+	StatsEvent           = "stats"
+	BackupCompletedEvent = "backup completed"
 )
 
-// Adds an event listener for the server instance.
-func (s *Server) AddListener(event string, f EventListenerFunction) {
-	if s.listeners == nil {
-		s.listeners = make(map[string][]EventListenerFunction)
+type Event struct {
+	Data  string
+	Topic string
+}
+
+type EventBus struct {
+	sync.RWMutex
+
+	subscribers map[string][]chan Event
+}
+
+// Returns the server's emitter instance.
+func (s *Server) Events() *EventBus {
+	if s.emitter == nil {
+		s.emitter = &EventBus{
+			subscribers: map[string][]chan Event{},
+		}
 	}
 
-	if _, ok := s.listeners[event]; ok {
-		s.listeners[event] = append(s.listeners[event], f)
-	} else {
-		s.listeners[event] = []EventListenerFunction{f}
+	return s.emitter
+}
+
+// Publish data to a given topic.
+func (e *EventBus) Publish(topic string, data string) {
+	e.RLock()
+	defer e.RUnlock()
+
+	t := topic
+	// Some of our topics for the socket support passing a more specific namespace,
+	// such as "backup completed:1234" to indicate which specific backup was completed.
+	//
+	// In these cases, we still need to the send the event using the standard listener
+	// name of "backup completed".
+	if strings.Contains(topic, ":") {
+		parts := strings.SplitN(topic, ":", 2)
+
+		if len(parts) == 2 {
+			t = parts[0]
+		}
+	}
+
+	if ch, ok := e.subscribers[t]; ok {
+		go func(data Event, cs []chan Event) {
+			for _, channel := range cs {
+				channel <- data
+			}
+		}(Event{Data: data, Topic: topic}, ch)
 	}
 }
 
-// Removes the event listener for the server instance.
-func (s *Server) RemoveListener(event string, f EventListenerFunction) {
-	if _, ok := s.listeners[event]; ok {
-		for i := range s.listeners[event] {
-			if s.listeners[event][i] == f {
-				s.listeners[event] = append(s.listeners[event][:i], s.listeners[event][i+1:]...)
-				break
+func (e *EventBus) PublishJson(topic string, data interface{}) error {
+	b, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+
+	e.Publish(topic, string(b))
+
+	return nil
+}
+
+// Subscribe to an emitter topic using a channel.
+func (e *EventBus) Subscribe(topic string, ch chan Event) {
+	e.Lock()
+	defer e.Unlock()
+
+	if p, ok := e.subscribers[topic]; ok {
+		e.subscribers[topic] = append(p, ch)
+	} else {
+		e.subscribers[topic] = append([]chan Event{}, ch)
+	}
+}
+
+// Unsubscribe a channel from a topic.
+func (e *EventBus) Unsubscribe(topic string, ch chan Event) {
+	e.Lock()
+	defer e.Unlock()
+
+	if _, ok := e.subscribers[topic]; ok {
+		for i := range e.subscribers[topic] {
+			if ch == e.subscribers[topic][i] {
+				e.subscribers[topic] = append(e.subscribers[topic][:i], e.subscribers[topic][i+1:]...)
 			}
 		}
 	}
 }
 
-// Emits an event to all of the active listeners for a server.
-func (s *Server) Emit(event string, data string) {
-	if _, ok := s.listeners[event]; ok {
-		for _, handler := range s.listeners[event] {
-			go func(f EventListenerFunction, d string) {
-				(*f)(d)
-			}(handler, data)
-		}
+// Removes all of the event listeners for the server. This is used when a server
+// is being deleted to avoid a bunch of de-reference errors cropping up. Obviously
+// should also check elsewhere and handle a server reference going nil, but this
+// won't hurt.
+func (e *EventBus) UnsubscribeAll() {
+	e.Lock()
+	defer e.Unlock()
+
+	// Loop over all of the subscribers and just remove all of the events
+	// for them.
+	for t := range e.subscribers {
+		e.subscribers[t] = make([]chan Event, 0)
 	}
 }
-
-// Sends output to the server console formatted to appear correctly as being sent
-// from Wings.
-func (s *Server) SendConsoleOutputFromDaemon(data string) {
-	s.Emit(
-		ConsoleOutputEvent,
-		colorstring.Color(fmt.Sprintf("[yellow][bold][Pterodactyl Daemon]:[default] %s", data)),
-	)
-}

server/filesystem.go

@@ -3,12 +3,14 @@ package server
 import (
 	"bufio"
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"github.com/gabriel-vasile/mimetype"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/config"
-	"go.uber.org/zap"
+	"github.com/pterodactyl/wings/server/backup"
+	ignore "github.com/sabhiram/go-gitignore"
 	"io"
 	"io/ioutil"
 	"os"
@@ -18,6 +20,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 )
 
@@ -66,7 +69,7 @@ func (fs *Filesystem) SafePath(p string) (string, error) {
 		// Range over all of the path parts and form directory pathings from the end
 		// moving up until we have a valid resolution or we run out of paths to try.
 		for k := range parts {
-			try = strings.Join(parts[:(len(parts) - k)], "/")
+			try = strings.Join(parts[:(len(parts)-k)], "/")
 
 			if !strings.HasPrefix(try, fs.Path()) {
 				break
@@ -87,7 +90,7 @@ func (fs *Filesystem) SafePath(p string) (string, error) {
 			return "", InvalidPathResolution
 		}
 
-		// If the nonExistentPathResoltion variable is not empty then the initial path requested
+		// If the nonExistentPathResolution variable is not empty then the initial path requested
 		// did not exist and we looped through the pathway until we found a match. At this point
 		// we've confirmed the first matched pathway exists in the root server directory, so we
 		// can go ahead and just return the path that was requested initially.
@@ -117,23 +120,27 @@ func (fs *Filesystem) HasSpaceAvailable() bool {
 		return true
 	}
 
-	var size int64
+	// If we have a match in the cache, use that value in the return. No need to perform an expensive
+	// disk operation, even if this is an empty value.
 	if x, exists := fs.Server.Cache.Get("disk_used"); exists {
-		size = x.(int64)
+		fs.Server.Resources.Disk = x.(int64)
+		return (x.(int64) / 1000.0 / 1000.0) <= space
 	}
 
 	// If there is no size its either because there is no data (in which case running this function
 	// will have effectively no impact), or there is nothing in the cache, in which case we need to
 	// grab the size of their data directory. This is a taxing operation, so we want to store it in
 	// the cache once we've gotten it.
-	if size == 0 {
-		if size, err := fs.DirectorySize("/"); err != nil {
-			zap.S().Warnw("failed to determine directory size", zap.String("server", fs.Server.Uuid), zap.Error(err))
-		} else {
-			fs.Server.Cache.Set("disk_used", size, time.Second * 60)
-		}
+	size, err := fs.DirectorySize("/")
+	if err != nil {
+		fs.Server.Log().WithField("error", err).Warn("failed to determine root server directory size")
 	}
 
+	// Always cache the size, even if there is an error. We want to always return that value
+	// so that we don't cause an endless loop of determining the disk size if there is a temporary
+	// error encountered.
+	fs.Server.Cache.Set("disk_used", size, time.Second*60)
+
 	// Determine if their folder size, in bytes, is smaller than the amount of space they've
 	// been allocated.
 	fs.Server.Resources.Disk = size
@@ -145,41 +152,20 @@ func (fs *Filesystem) HasSpaceAvailable() bool {
 // through all of the folders. Returns the size in bytes. This can be a fairly taxing operation
 // on locations with tons of files, so it is recommended that you cache the output.
 func (fs *Filesystem) DirectorySize(dir string) (int64, error) {
+	w := fs.NewWalker()
+	ctx := context.Background()
+
 	var size int64
-	var wg sync.WaitGroup
-
-	cleaned, err := fs.SafePath(dir)
-	if err != nil {
-		return 0, err
-	}
-
-	files, err := ioutil.ReadDir(cleaned)
-	if err != nil {
-		return 0, err
-	}
-
-	// Iterate over all of the files and directories. If it is a file, immediately add its size
-	// to the total size being returned. If we're dealing with a directory, call this function
-	// on a seperate thread until we have gotten the size of everything nested within the given
-	// directory.
-	for _, f := range files {
-		if f.IsDir() {
-			wg.Add(1)
-
-			go func(p string) {
-				defer wg.Done()
-
-				s, _ := fs.DirectorySize(p)
-				size += s
-			}(filepath.Join(cleaned, f.Name()))
-		} else {
-			size += f.Size()
+	err := w.Walk(dir, ctx, func(f os.FileInfo, _ string) bool {
+		// Only increment the size when we're dealing with a file specifically, otherwise
+		// just continue digging deeper until there are no more directories to iterate over.
+		if !f.IsDir() {
+			atomic.AddInt64(&size, f.Size())
 		}
-	}
+		return true
+	})
 
-	wg.Wait()
-
-	return size, nil
+	return size, err
 }
 
 // Reads a file on the system and returns it as a byte representation in a file
@@ -299,14 +285,18 @@ func (fs *Filesystem) Stat(p string) (*Stat, error) {
 		return nil, err
 	}
 
-	s, err := os.Stat(cleaned)
+	return fs.unsafeStat(cleaned)
+}
+
+func (fs *Filesystem) unsafeStat(p string) (*Stat, error) {
+	s, err := os.Stat(p)
 	if err != nil {
 		return nil, err
 	}
 
 	var m = "inode/directory"
 	if !s.IsDir() {
-		m, _, err = mimetype.DetectFile(cleaned)
+		m, _, err = mimetype.DetectFile(p)
 		if err != nil {
 			return nil, err
 		}
@@ -373,6 +363,9 @@ func (fs *Filesystem) chownDirectory(path string) error {
 		return errors.WithStack(err)
 	}
 
+	// Chown the directory itself.
+	os.Chown(cleaned, config.Get().System.User.Uid, config.Get().System.User.Gid)
+
 	files, err := ioutil.ReadDir(cleaned)
 	if err != nil {
 		return errors.WithStack(err)
@@ -387,6 +380,7 @@ func (fs *Filesystem) chownDirectory(path string) error {
 				fs.chownDirectory(p)
 			}(filepath.Join(cleaned, f.Name()))
 		} else {
+			// Chown the file.
 			os.Chown(filepath.Join(cleaned, f.Name()), fs.Configuration.User.Uid, fs.Configuration.User.Gid)
 		}
 	}
@@ -406,13 +400,12 @@ func (fs *Filesystem) Copy(p string) error {
 		return errors.WithStack(err)
 	}
 
-	if s, err := os.Stat(cleaned); (err != nil && os.IsNotExist(err)) || s.IsDir() || !s.Mode().IsRegular() {
-		// For now I think I am okay just returning a nil response if the thing
-		// we're trying to copy doesn't exist. Probably will want to come back and
-		// re-evaluate if this is a smart decision (I'm guessing not).
-		return nil
-	} else if err != nil {
-		return errors.WithStack(err)
+	if s, err := os.Stat(cleaned); err != nil {
+		return err
+	} else if s.IsDir() || !s.Mode().IsRegular() {
+		// If this is a directory or not a regular file, just throw a not-exist error
+		// since anything calling this function should understand what that means.
+		return os.ErrNotExist
 	}
 
 	base := filepath.Base(cleaned)
@@ -511,14 +504,14 @@ func (fs *Filesystem) ListDirectory(p string) ([]*Stat, error) {
 	// You must initialize the output of this directory as a non-nil value otherwise
 	// when it is marshaled into a JSON object you'll just get 'null' back, which will
 	// break the panel badly.
-	out := make([]*Stat, 0)
+	out := make([]*Stat, len(files))
 
 	// Iterate over all of the files and directories returned and perform an async process
 	// to get the mime-type for them all.
-	for _, file := range files {
+	for i, file := range files {
 		wg.Add(1)
 
-		go func(f os.FileInfo) {
+		go func(idx int, f os.FileInfo) {
 			defer wg.Done()
 
 			var m = "inode/directory"
@@ -526,11 +519,11 @@ func (fs *Filesystem) ListDirectory(p string) ([]*Stat, error) {
 				m, _, _ = mimetype.DetectFile(filepath.Join(cleaned, f.Name()))
 			}
 
-			out = append(out, &Stat{
+			out[idx] = &Stat{
 				Info:     f,
 				Mimetype: m,
-			})
-		}(file)
+			}
+		}(i, file)
 	}
 
 	wg.Wait()
@@ -567,4 +560,44 @@ func (fs *Filesystem) EnsureDataDirectory() error {
 	}
 
 	return nil
-}
+}
+
+// Given a directory, iterate through all of the files and folders within it and determine
+// if they should be included in the output based on an array of ignored matches. This uses
+// standard .gitignore formatting to make that determination.
+//
+// If no ignored files are passed through you'll get the entire directory listing.
+func (fs *Filesystem) GetIncludedFiles(dir string, ignored []string) (*backup.IncludedFiles, error) {
+	cleaned, err := fs.SafePath(dir)
+	if err != nil {
+		return nil, err
+	}
+
+	w := fs.NewWalker()
+	ctx := context.Background()
+
+	i, err := ignore.CompileIgnoreLines(ignored...)
+	if err != nil {
+		return nil, err
+	}
+
+	// Walk through all of the files and directories on a server. This callback only returns
+	// files found, and will keep walking deeper and deeper into directories.
+	inc := new(backup.IncludedFiles)
+	if err := w.Walk(cleaned, ctx, func(f os.FileInfo, p string) bool {
+		// Avoid unnecessary parsing if there are no ignored files, nothing will match anyways
+		// so no reason to call the function.
+		if len(ignored) == 0 || !i.MatchesPath(strings.TrimPrefix(p, fs.Path() + "/")) {
+			inc.Push(&f, p)
+		}
+
+		// We can't just abort if the path is technically ignored. It is possible there is a nested
+		// file or folder that should not be excluded, so in this case we need to just keep going
+		// until we get to a final state.
+		return true
+	}); err != nil {
+		return nil, err
+	}
+
+	return inc, nil
+}

server/filesystem_walker.go

@@ -0,0 +1,70 @@
+package server
+
+import (
+	"context"
+	"golang.org/x/sync/errgroup"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+type FileWalker struct {
+	*Filesystem
+}
+
+// Returns a new walker instance.
+func (fs *Filesystem) NewWalker() *FileWalker {
+	return &FileWalker{fs}
+}
+
+// Iterate over all of the files and directories within a given directory. When a file is
+// found the callback will be called with the file information. If a directory is encountered
+// it will be recursively passed back through to this function.
+func (fw *FileWalker) Walk(dir string, ctx context.Context, callback func (os.FileInfo, string) bool) error {
+	cleaned, err := fw.SafePath(dir)
+	if err != nil {
+		return err
+	}
+
+	// Get all of the files from this directory.
+	files, err := ioutil.ReadDir(cleaned)
+	if err != nil {
+		return err
+	}
+
+	// Create an error group that we can use to run processes in parallel while retaining
+	// the ability to cancel the entire process immediately should any of it fail.
+	g, ctx := errgroup.WithContext(ctx)
+
+	for _, f := range files {
+		if f.IsDir() {
+			fi := f
+			p := filepath.Join(cleaned, f.Name())
+			// Recursively call this function to continue digging through the directory tree within
+			// a seperate goroutine. If the context is canceled abort this process.
+			g.Go(func() error {
+				select {
+				case <-ctx.Done():
+					return ctx.Err()
+				default:
+					// If the callback returns true, go ahead and keep walking deeper. This allows
+					// us to programatically continue deeper into directories, or stop digging
+					// if that pathway knows it needs nothing else.
+					if callback(fi, p) {
+						return fw.Walk(p, ctx, callback)
+					}
+
+					return nil
+				}
+			})
+		} else {
+			// If this isn't a directory, go ahead and pass the file information into the
+			// callback. We don't care about the response since we won't be stepping into
+			// anything from here.
+			callback(f, filepath.Join(cleaned, f.Name()))
+		}
+	}
+
+	// Block until all of the routines finish and have returned a value.
+	return g.Wait()
+}

server/install.go

@@ -0,0 +1,488 @@
+package server
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"github.com/apex/log"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/mount"
+	"github.com/docker/docker/client"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/api"
+	"github.com/pterodactyl/wings/config"
+	"golang.org/x/sync/semaphore"
+	"io"
+	"io/ioutil"
+	"os"
+	"path"
+	"path/filepath"
+	"sync"
+	"time"
+)
+
+// Executes the installation stack for a server process. Bubbles any errors up to the calling
+// function which should handle contacting the panel to notify it of the server state.
+func (s *Server) Install() error {
+	err := s.internalInstall()
+
+	s.Log().Debug("notifying panel of server install state")
+	if serr := s.SyncInstallState(err == nil); serr != nil {
+		l := s.Log().WithField("was_successful", err == nil)
+
+		// If the request was successful but there was an error with this request, attach the
+		// error to this log entry. Otherwise ignore it in this log since whatever is calling
+		// this function should handle the error and will end up logging the same one.
+		if err == nil {
+			l.WithField("error", serr)
+		}
+
+		l.Warn("failed to notify panel of server install state")
+	}
+
+	return err
+}
+
+// Reinstalls a server's software by utilizing the install script for the server egg. This
+// does not touch any existing files for the server, other than what the script modifies.
+func (s *Server) Reinstall() error {
+	if s.GetState() != ProcessOfflineState {
+		s.Log().Debug("waiting for server instance to enter a stopped state")
+		if err := s.Environment.WaitForStop(10, true); err != nil {
+			return err
+		}
+	}
+
+	return s.Install()
+}
+
+// Internal installation function used to simplify reporting back to the Panel.
+func (s *Server) internalInstall() error {
+	script, rerr, err := api.NewRequester().GetInstallationScript(s.Uuid)
+	if err != nil || rerr != nil {
+		if err != nil {
+			return err
+		}
+
+		return errors.New(rerr.String())
+	}
+
+	p, err := NewInstallationProcess(s, &script)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	s.Log().Info("beginning installation process for server")
+	if err := p.Run(); err != nil {
+		return err
+	}
+
+	s.Log().Info("completed installation process for server")
+	return nil
+}
+
+type InstallationProcess struct {
+	Server *Server
+	Script *api.InstallationScript
+
+	client  *client.Client
+	context context.Context
+}
+
+// Generates a new installation process struct that will be used to create containers,
+// and otherwise perform installation commands for a server.
+func NewInstallationProcess(s *Server, script *api.InstallationScript) (*InstallationProcess, error) {
+	proc := &InstallationProcess{
+		Script: script,
+		Server: s,
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	s.installer.cancel = &cancel
+
+	if c, err := client.NewClientWithOpts(client.FromEnv); err != nil {
+		return nil, errors.WithStack(err)
+	} else {
+		proc.client = c
+		proc.context = ctx
+	}
+
+	return proc, nil
+}
+
+// Try to obtain an exclusive lock on the installation process for the server. Waits up to 10
+// seconds before aborting with a context timeout.
+func (s *Server) acquireInstallationLock() error {
+	if s.installer.sem == nil {
+		s.installer.sem = semaphore.NewWeighted(1)
+	}
+
+	ctx, _ := context.WithTimeout(context.Background(), time.Second*10)
+
+	return s.installer.sem.Acquire(ctx, 1)
+}
+
+// Determines if the server is actively running the installation process by checking the status
+// of the semaphore lock.
+func (s *Server) IsInstalling() bool {
+	if s.installer.sem == nil {
+		return false
+	}
+
+	if s.installer.sem.TryAcquire(1) {
+		// If we made it into this block it means we were able to obtain an exclusive lock
+		// on the semaphore. In that case, go ahead and release that lock immediately, and
+		// return false.
+		s.installer.sem.Release(1)
+
+		return false
+	}
+
+	return true
+}
+
+// Aborts the server installation process by calling the cancel function on the installer
+// context.
+func (s *Server) AbortInstallation() {
+	if !s.IsInstalling() {
+		return
+	}
+
+	if s.installer.cancel != nil {
+		cancel := *s.installer.cancel
+
+		s.Log().Warn("aborting running installation process")
+		cancel()
+	}
+}
+
+// Removes the installer container for the server.
+func (ip *InstallationProcess) RemoveContainer() {
+	err := ip.client.ContainerRemove(ip.context, ip.Server.Uuid+"_installer", types.ContainerRemoveOptions{
+		RemoveVolumes: true,
+		Force:         true,
+	})
+
+	if err != nil && !client.IsErrNotFound(err) {
+		ip.Server.Log().WithField("error", errors.WithStack(err)).Warn("failed to delete server install container")
+	}
+}
+
+// Runs the installation process, this is done as a backgrounded thread. This will configure
+// the required environment, and then spin up the installation container.
+//
+// Once the container finishes installing the results will be stored in an installation
+// log in the server's configuration directory.
+func (ip *InstallationProcess) Run() error {
+	ip.Server.Log().Debug("acquiring installation process lock")
+	if err := ip.Server.acquireInstallationLock(); err != nil {
+		return err
+	}
+
+	// We now have an exclusive lock on this installation process. Ensure that whenever this
+	// process is finished that the semaphore is released so that other processes and be executed
+	// without encounting a wait timeout.
+	defer func() {
+		ip.Server.Log().Debug("releasing installation process lock")
+		ip.Server.installer.sem.Release(1)
+		ip.Server.installer.cancel = nil
+	}()
+
+	installPath, err := ip.BeforeExecute()
+	if err != nil {
+		return err
+	}
+
+	cid, err := ip.Execute(installPath)
+	if err != nil {
+		ip.RemoveContainer()
+
+		return err
+	}
+
+	// If this step fails, log a warning but don't exit out of the process. This is completely
+	// internal to the daemon's functionality, and does not affect the status of the server itself.
+	if err := ip.AfterExecute(cid); err != nil {
+		ip.Server.Log().WithField("error", err).Warn("failed to complete after-execute step of installation process")
+	}
+
+	return nil
+}
+
+// Writes the installation script to a temporary file on the host machine so that it
+// can be properly mounted into the installation container and then executed.
+func (ip *InstallationProcess) writeScriptToDisk() (string, error) {
+	// Make sure the temp directory root exists before trying to make a directory within it. The
+	// ioutil.TempDir call expects this base to exist, it won't create it for you.
+	if err := os.MkdirAll(path.Join(os.TempDir(), "pterodactyl/"), 0700); err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	d, err := ioutil.TempDir("", "pterodactyl/")
+	if err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	f, err := os.OpenFile(filepath.Join(d, "install.sh"), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		return "", errors.WithStack(err)
+	}
+	defer f.Close()
+
+	w := bufio.NewWriter(f)
+
+	scanner := bufio.NewScanner(bytes.NewReader([]byte(ip.Script.Script)))
+	for scanner.Scan() {
+		w.WriteString(scanner.Text() + "\n")
+	}
+
+	if err := scanner.Err(); err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	w.Flush()
+
+	return d, nil
+}
+
+// Pulls the docker image to be used for the installation container.
+func (ip *InstallationProcess) pullInstallationImage() error {
+	r, err := ip.client.ImagePull(ip.context, ip.Script.ContainerImage, types.ImagePullOptions{})
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	// Block continuation until the image has been pulled successfully.
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		log.Debug(scanner.Text())
+	}
+
+	if err := scanner.Err(); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+// Runs before the container is executed. This pulls down the required docker container image
+// as well as writes the installation script to the disk. This process is executed in an async
+// manner, if either one fails the error is returned.
+func (ip *InstallationProcess) BeforeExecute() (string, error) {
+	wg := sync.WaitGroup{}
+	wg.Add(3)
+
+	var e []error
+	var fileName string
+
+	go func() {
+		defer wg.Done()
+		name, err := ip.writeScriptToDisk()
+		if err != nil {
+			e = append(e, err)
+			return
+		}
+
+		fileName = name
+	}()
+
+	go func() {
+		defer wg.Done()
+		if err := ip.pullInstallationImage(); err != nil {
+			e = append(e, err)
+		}
+	}()
+
+	go func() {
+		defer wg.Done()
+
+		opts := types.ContainerRemoveOptions{
+			RemoveVolumes: true,
+			Force:         true,
+		}
+
+		if err := ip.client.ContainerRemove(ip.context, ip.Server.Uuid+"_installer", opts); err != nil {
+			if !client.IsErrNotFound(err) {
+				e = append(e, err)
+			}
+		}
+	}()
+
+	wg.Wait()
+
+	// Maybe a better way to handle this, but if there is at least one error
+	// just bail out of the process now.
+	if len(e) > 0 {
+		return "", errors.WithStack(e[0])
+	}
+
+	return fileName, nil
+}
+
+// Returns the log path for the installation process.
+func (ip *InstallationProcess) GetLogPath() string {
+	return filepath.Join(config.Get().System.GetInstallLogPath(), ip.Server.Uuid+".log")
+}
+
+// Cleans up after the execution of the installation process. This grabs the logs from the
+// process to store in the server configuration directory, and then destroys the associated
+// installation container.
+func (ip *InstallationProcess) AfterExecute(containerId string) error {
+	defer ip.RemoveContainer()
+
+	ip.Server.Log().WithField("container_id", containerId).Debug("pulling installation logs for server")
+	reader, err := ip.client.ContainerLogs(ip.context, containerId, types.ContainerLogsOptions{
+		ShowStdout: true,
+		ShowStderr: true,
+		Follow:     false,
+	})
+
+	if err != nil && !client.IsErrNotFound(err) {
+		return errors.WithStack(err)
+	}
+
+	f, err := os.OpenFile(ip.GetLogPath(), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+	defer f.Close()
+
+	// We write the contents of the container output to a more "permanent" file so that they
+	// can be referenced after this container is deleted.
+	if _, err := io.Copy(f, reader); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+// Executes the installation process inside a specially created docker container.
+func (ip *InstallationProcess) Execute(installPath string) (string, error) {
+	conf := &container.Config{
+		Hostname:     "installer",
+		AttachStdout: true,
+		AttachStderr: true,
+		AttachStdin:  true,
+		OpenStdin:    true,
+		Tty:          true,
+		Cmd:          []string{ip.Script.Entrypoint, "./mnt/install/install.sh"},
+		Image:        ip.Script.ContainerImage,
+		Env:          ip.Server.GetEnvironmentVariables(),
+		Labels: map[string]string{
+			"Service":       "Pterodactyl",
+			"ContainerType": "server_installer",
+		},
+	}
+
+	hostConf := &container.HostConfig{
+		Mounts: []mount.Mount{
+			{
+				Target:   "/mnt/server",
+				Source:   ip.Server.Filesystem.Path(),
+				Type:     mount.TypeBind,
+				ReadOnly: false,
+			},
+			{
+				Target:   "/mnt/install",
+				Source:   installPath,
+				Type:     mount.TypeBind,
+				ReadOnly: false,
+			},
+		},
+		Tmpfs: map[string]string{
+			"/tmp": "rw,exec,nosuid,size=50M",
+		},
+		DNS: config.Get().Docker.Network.Dns,
+		LogConfig: container.LogConfig{
+			Type: "local",
+			Config: map[string]string{
+				"max-size": "5m",
+				"max-file": "1",
+				"compress": "false",
+			},
+		},
+		Privileged:  true,
+		NetworkMode: container.NetworkMode(config.Get().Docker.Network.Mode),
+	}
+
+	ip.Server.Log().WithField("install_script", installPath+"/install.sh").Info("creating install container for server process")
+	r, err := ip.client.ContainerCreate(ip.context, conf, hostConf, nil, ip.Server.Uuid+"_installer")
+	if err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	ip.Server.Log().WithField("container_id", r.ID).Info("running installation script for server in container")
+	if err := ip.client.ContainerStart(ip.context, r.ID, types.ContainerStartOptions{}); err != nil {
+		return "", err
+	}
+
+	go func(id string) {
+		ip.Server.Events().Publish(DaemonMessageEvent, "Starting installation process, this could take a few minutes...")
+		if err := ip.StreamOutput(id); err != nil {
+			ip.Server.Log().WithField("error", err).Error("error while handling output stream for server install process")
+		}
+		ip.Server.Events().Publish(DaemonMessageEvent, "Installation process completed.")
+	}(r.ID)
+
+	sChann, eChann := ip.client.ContainerWait(ip.context, r.ID, container.WaitConditionNotRunning)
+	select {
+	case err := <-eChann:
+		if err != nil {
+			return "", errors.WithStack(err)
+		}
+	case <-sChann:
+	}
+
+	return r.ID, nil
+}
+
+// Streams the output of the installation process to a log file in the server configuration
+// directory, as well as to a websocket listener so that the process can be viewed in
+// the panel by administrators.
+func (ip *InstallationProcess) StreamOutput(id string) error {
+	reader, err := ip.client.ContainerLogs(ip.context, id, types.ContainerLogsOptions{
+		ShowStdout: true,
+		ShowStderr: true,
+		Follow:     true,
+	})
+
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	defer reader.Close()
+
+	s := bufio.NewScanner(reader)
+	for s.Scan() {
+		ip.Server.Events().Publish(InstallOutputEvent, s.Text())
+	}
+
+	if err := s.Err(); err != nil {
+		ip.Server.Log().WithFields(log.Fields{
+			"container_id": id,
+			"error":        errors.WithStack(err),
+		}).Warn("error processing scanner line in installation output for server")
+	}
+
+	return nil
+}
+
+// Makes a HTTP request to the Panel instance notifying it that the server has
+// completed the installation process, and what the state of the server is. A boolean
+// value of "true" means everything was successful, "false" means something went
+// wrong and the server must be deleted and re-created.
+func (s *Server) SyncInstallState(successful bool) error {
+	r := api.NewRequester()
+
+	rerr, err := r.SendInstallationStatus(s.Uuid, successful)
+	if rerr != nil || err != nil {
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		return errors.New(rerr.String())
+	}
+
+	return nil
+}

server/listeners.go

@@ -1,45 +1,47 @@
 package server
 
 import (
+	"github.com/apex/log"
 	"github.com/pterodactyl/wings/api"
-	"go.uber.org/zap"
 	"strings"
 )
 
-
 // Adds all of the internal event listeners we want to use for a server.
 func (s *Server) AddEventListeners() {
-	s.AddListener(ConsoleOutputEvent, s.onConsoleOutput())
-}
+	consoleChannel := make(chan Event)
+	s.Events().Subscribe(ConsoleOutputEvent, consoleChannel)
 
-var onConsoleOutputListener func(string)
+	go func() {
+		for {
+			select {
+			case data := <-consoleChannel:
+				s.onConsoleOutput(data.Data)
+			}
+		}
+	}()
+}
 
 // Custom listener for console output events that will check if the given line
 // of output matches one that should mark the server as started or not.
-func (s *Server) onConsoleOutput() *func(string) {
-	if onConsoleOutputListener == nil {
-		onConsoleOutputListener = func (data string) {
-			// If the specific line of output is one that would mark the server as started,
-			// set the server to that state. Only do this if the server is not currently stopped
-			// or stopping.
-			if s.State == ProcessStartingState && strings.Contains(data, s.processConfiguration.Startup.Done) {
-				zap.S().Debugw(
-					"detected server in running state based on line output", zap.String("match", s.processConfiguration.Startup.Done), zap.String("against", data),
-				)
+func (s *Server) onConsoleOutput(data string) {
+	// If the specific line of output is one that would mark the server as started,
+	// set the server to that state. Only do this if the server is not currently stopped
+	// or stopping.
+	if s.GetState() == ProcessStartingState && strings.Contains(data, s.processConfiguration.Startup.Done) {
+		s.Log().WithFields(log.Fields{
+			"match": s.processConfiguration.Startup.Done,
+			"against": data,
+		}).Debug("detected server in running state based on console line output")
 
-				s.SetState(ProcessRunningState)
-			}
-
-			// If the command sent to the server is one that should stop the server we will need to
-			// set the server to be in a stopping state, otherwise crash detection will kick in and
-			// cause the server to unexpectedly restart on the user.
-			if s.State == ProcessStartingState || s.State == ProcessRunningState {
-				if s.processConfiguration.Stop.Type == api.ProcessStopCommand && data == s.processConfiguration.Stop.Value {
-					s.SetState(ProcessStoppingState)
-				}
-			}
-		}
+		s.SetState(ProcessRunningState)
 	}
 
-	return &onConsoleOutputListener
-}
+	// If the command sent to the server is one that should stop the server we will need to
+	// set the server to be in a stopping state, otherwise crash detection will kick in and
+	// cause the server to unexpectedly restart on the user.
+	if s.IsRunning() {
+		if s.processConfiguration.Stop.Type == api.ProcessStopCommand && data == s.processConfiguration.Stop.Value {
+			s.SetState(ProcessStoppingState)
+		}
+	}
+}

server/power.go

@@ -0,0 +1,12 @@
+package server
+
+type PowerAction struct {
+	Action string `json:"action"`
+}
+
+func (pr *PowerAction) IsValid() bool {
+	return pr.Action == "start" ||
+		pr.Action == "stop" ||
+		pr.Action == "kill" ||
+		pr.Action == "restart"
+}

server/resources.go

@@ -9,7 +9,10 @@ import (
 // should obviously expect memory and CPU usage to be 0. However, disk will always be returned
 // since that is not dependent on the server being running to collect that data.
 type ResourceUsage struct {
-	// The total amount of memory, in bytes, that this server instance is consuming.
+	// The total amount of memory, in bytes, that this server instance is consuming. This is
+	// calculated slightly differently than just using the raw Memory field that the stats
+	// return from the container, so please check the code setting this value for how that
+	// is calculated.
 	Memory uint64 `json:"memory_bytes"`
 	// The total amount of memory this container or resource can use. Inside Docker this is
 	// going to be higher than you'd expect because we're automatically allocating overhead
@@ -28,6 +31,27 @@ type ResourceUsage struct {
 	} `json:"network"`
 }
 
+// The "docker stats" CLI call does not return the same value as the types.MemoryStats.Usage
+// value which can be rather confusing to people trying to compare panel usage to
+// their stats output.
+//
+// This math is straight up lifted from their CLI repository in order to show the same
+// values to avoid people bothering me about it. It should also reflect a slightly more
+// correct memory value anyways.
+//
+// @see https://github.com/docker/cli/blob/96e1d1d6/cli/command/container/stats_helpers.go#L227-L249
+func (ru *ResourceUsage) CalculateDockerMemory(stats types.MemoryStats) uint64 {
+	if v, ok := stats.Stats["total_inactive_file"]; ok && v < stats.Usage {
+		return stats.Usage - v
+	}
+
+	if v := stats.Stats["inactive_file"]; v < stats.Usage {
+		return stats.Usage - v
+	}
+
+	return stats.Usage
+}
+
 // Calculates the absolute CPU usage used by the server process on the system, not constrained
 // by the defined CPU limits on the container.
 //
@@ -51,4 +75,4 @@ func (ru *ResourceUsage) CalculateAbsoluteCpu(pStats *types.CPUStats, stats *typ
 	}
 
 	return math.Round(percent*1000) / 1000
-}
+}

server/server.go

@@ -1,18 +1,18 @@
 package server
 
 import (
+	"context"
 	"fmt"
+	"github.com/apex/log"
 	"github.com/creasty/defaults"
 	"github.com/patrickmn/go-cache"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/wings/api"
 	"github.com/pterodactyl/wings/config"
 	"github.com/remeh/sizedwaitgroup"
-	"go.uber.org/zap"
-	"gopkg.in/yaml.v2"
-	"io/ioutil"
+	"golang.org/x/sync/semaphore"
+	"math"
 	"os"
-	"path"
 	"strings"
 	"sync"
 	"time"
@@ -27,11 +27,11 @@ func GetServers() *Collection {
 // High level definition for a server instance being controlled by Wings.
 type Server struct {
 	// The unique identifier for the server that should be used when referencing
-	// it aganist the Panel API (and internally). This will be used when naming
+	// it against the Panel API (and internally). This will be used when naming
 	// docker containers as well as in log output.
 	Uuid string `json:"uuid"`
 
-	// Wether or not the server is in a suspended state. Suspended servers cannot
+	// Whether or not the server is in a suspended state. Suspended servers cannot
 	// be started or modified except in certain scenarios by an admin user.
 	Suspended bool `json:"suspended"`
 
@@ -45,6 +45,7 @@ type Server struct {
 	// server process.
 	EnvVars map[string]string `json:"environment" yaml:"environment"`
 
+	Archiver       Archiver       `json:"-" yaml:"-"`
 	CrashDetection CrashDetection `json:"crash_detection" yaml:"crash_detection"`
 	Build          BuildSettings  `json:"build"`
 	Allocations    Allocations    `json:"allocations"`
@@ -64,17 +65,33 @@ type Server struct {
 	// certain long operations return faster. For example, FS disk space usage.
 	Cache *cache.Cache `json:"-" yaml:"-"`
 
-	// All of the registered event listeners for this server instance.
-	listeners EventListeners
+	// Events emitted by the server instance.
+	emitter *EventBus
 
 	// Defines the process configuration for the server instance. This is dynamically
 	// fetched from the Pterodactyl Server instance each time the server process is
 	// started, and then cached here.
 	processConfiguration *api.ProcessConfiguration
 
+	// Tracks the installation process for this server and prevents a server from running
+	// two installer processes at the same time. This also allows us to cancel a running
+	// installation process, for example when a server is deleted from the panel while the
+	// installer process is still running.
+	installer InstallerDetails
+
 	// Internal mutex used to block actions that need to occur sequentially, such as
 	// writing the configuration to the disk.
-	mutex *sync.Mutex
+	sync.RWMutex
+}
+
+type InstallerDetails struct {
+	// The cancel function for the installer. This will be a non-nil value while there
+	// is an installer running for the server.
+	cancel *context.CancelFunc
+
+	// Installer lock. You should obtain an exclusive lock on this context while running
+	// the installation process and release it when finished.
+	sem *semaphore.Weighted
 }
 
 // The build settings for a given server that impact docker container creation and
@@ -98,6 +115,9 @@ type BuildSettings struct {
 
 	// The amount of disk space in megabytes that a server is allowed to use.
 	DiskSpace int64 `json:"disk_space" yaml:"disk"`
+
+	// Sets which CPU threads can be used by the docker instance.
+	Threads string `json:"threads" yaml:"threads"`
 }
 
 // Converts the CPU limit for a server build into a number that can be better understood
@@ -111,6 +131,23 @@ func (b *BuildSettings) ConvertedCpuLimit() int64 {
 	return b.CpuLimit * 1000
 }
 
+// Set the hard limit for memory usage to be 5% more than the amount of memory assigned to
+// the server. If the memory limit for the server is < 4G, use 10%, if less than 2G use
+// 15%. This avoids unexpected crashes from processes like Java which run over the limit.
+func (b *BuildSettings) MemoryOverheadMultiplier() float64 {
+	if b.MemoryLimit <= 2048 {
+		return 1.15
+	} else if b.MemoryLimit <= 4096 {
+		return 1.10
+	}
+
+	return 1.05
+}
+
+func (b *BuildSettings) BoundedMemoryLimit() int64 {
+	return int64(math.Round(float64(b.MemoryLimit) * b.MemoryOverheadMultiplier() * 1_000_000))
+}
+
 // Returns the amount of swap available as a total in bytes. This is returned as the amount
 // of memory available to the server initially, PLUS the amount of additional swap to include
 // which is the format used by Docker.
@@ -119,7 +156,7 @@ func (b *BuildSettings) ConvertedSwap() int64 {
 		return -1
 	}
 
-	return (b.Swap * 1000000) + (b.MemoryLimit * 1000000)
+	return (b.Swap * 1_000_000) + b.BoundedMemoryLimit()
 }
 
 // Defines the allocations available for a given server. When using the Docker environment
@@ -140,7 +177,7 @@ type Allocations struct {
 
 // Iterates over a given directory and loads all of the servers listed before returning
 // them to the calling function.
-func LoadDirectory(dir string, cfg *config.SystemConfiguration) error {
+func LoadDirectory() error {
 	// We could theoretically use a standard wait group here, however doing
 	// that introduces the potential to crash the program due to too many
 	// open files. This wouldn't happen on a small setup, but once the daemon is
@@ -151,43 +188,41 @@ func LoadDirectory(dir string, cfg *config.SystemConfiguration) error {
 	// the road to help big instances scale better.
 	wg := sizedwaitgroup.New(10)
 
-	f, err := ioutil.ReadDir(dir)
+	configs, rerr, err := api.NewRequester().GetAllServerConfigurations()
+	if err != nil || rerr != nil {
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		return errors.New(rerr.String())
+	}
+
+	states, err := getServerStates()
 	if err != nil {
-		return err
+		return errors.WithStack(err)
 	}
 
 	servers = NewCollection(nil)
 
-	for _, file := range f {
-		if !strings.HasSuffix(file.Name(), ".yml") || file.IsDir() {
-			continue
-		}
-
+	for uuid, data := range configs {
 		wg.Add()
-		// For each of the YAML files we find, parse it and create a new server
-		// configuration object that can then be returned to the caller.
-		go func(file os.FileInfo) {
+
+		go func(uuid string, data *api.ServerConfigurationResponse) {
 			defer wg.Done()
 
-			b, err := ioutil.ReadFile(path.Join(dir, file.Name()))
+			s, err := FromConfiguration(data)
 			if err != nil {
-				zap.S().Errorw("failed to read server configuration file, skipping...", zap.String("server", file.Name()), zap.Error(err))
+				log.WithField("server", uuid).WithField("error", err).Error("failed to load server, skipping...")
 				return
 			}
 
-			s, err := FromConfiguration(b, cfg)
-			if err != nil {
-				if IsServerDoesNotExistError(err) {
-					zap.S().Infow("server does not exist on remote system", zap.String("server", file.Name()))
-				} else {
-					zap.S().Errorw("failed to parse server configuration, skipping...", zap.String("server", file.Name()), zap.Error(err))
-				}
-
-				return
+			if state, exists := states[s.Uuid]; exists {
+				s.SetState(state)
+				s.Log().WithField("state", s.GetState()).Debug("loaded server state from cache file")
 			}
 
 			servers.Add(s)
-		}(file)
+		}(uuid, data)
 	}
 
 	// Wait until we've processed all of the configuration files in the directory
@@ -197,66 +232,78 @@ func LoadDirectory(dir string, cfg *config.SystemConfiguration) error {
 	return nil
 }
 
-// Initializes the default required internal struct components for a Server.
-func (s *Server) Init() {
-	s.listeners = make(map[string][]EventListenerFunction)
-	s.mutex = &sync.Mutex{}
-}
-
-// Initalizes a server using a data byte array. This will be marshaled into the
+// Initializes a server using a data byte array. This will be marshaled into the
 // given struct using a YAML marshaler. This will also configure the given environment
 // for a server.
-func FromConfiguration(data []byte, cfg *config.SystemConfiguration) (*Server, error) {
+func FromConfiguration(data *api.ServerConfigurationResponse) (*Server, error) {
 	s := new(Server)
 
 	if err := defaults.Set(s); err != nil {
 		return nil, err
 	}
 
-	s.Init()
-
-	if err := yaml.Unmarshal(data, s); err != nil {
+	if err := s.UpdateDataStructure(data.Settings, false); err != nil {
 		return nil, err
 	}
 
 	s.AddEventListeners()
 
-	withConfiguration := func(e *DockerEnvironment) {
-		e.User = cfg.User.Uid
-		e.TimezonePath = cfg.TimezonePath
-		e.Server = s
-	}
-
 	// Right now we only support a Docker based environment, so I'm going to hard code
 	// this logic in. When we're ready to support other environment we'll need to make
 	// some modifications here obviously.
-	var env Environment
-	if t, err := NewDockerEnvironment(withConfiguration); err == nil {
-		env = t
-	} else {
+	if err := NewDockerEnvironment(s); err != nil {
 		return nil, err
 	}
 
-	s.Environment = env
 	s.Cache = cache.New(time.Minute*10, time.Minute*15)
+	s.Archiver = Archiver{
+		Server: s,
+	}
 	s.Filesystem = Filesystem{
-		Configuration: cfg,
+		Configuration: &config.Get().System,
 		Server:        s,
 	}
 	s.Resources = ResourceUsage{}
 
-	// This is also done when the server is booted, however we need to account for instances
-	// where the server is already running and the Daemon reboots. In those cases this will
-	// allow us to you know, stop servers.
-	if cfg.SyncServersOnBoot {
-		if err := s.Sync(); err != nil {
-			return nil, err
-		}
+	// Forces the configuration to be synced with the panel.
+	if err := s.SyncWithConfiguration(data); err != nil {
+		return nil, err
 	}
 
 	return s, nil
 }
 
+// Returns all of the environment variables that should be assigned to a running
+// server instance.
+func (s *Server) GetEnvironmentVariables() []string {
+	zone, _ := time.Now().In(time.Local).Zone()
+
+	var out = []string{
+		fmt.Sprintf("TZ=%s", zone),
+		fmt.Sprintf("STARTUP=%s", s.Invocation),
+		fmt.Sprintf("SERVER_MEMORY=%d", s.Build.MemoryLimit),
+		fmt.Sprintf("SERVER_IP=%s", s.Allocations.DefaultMapping.Ip),
+		fmt.Sprintf("SERVER_PORT=%d", s.Allocations.DefaultMapping.Port),
+	}
+
+eloop:
+	for k, v := range s.EnvVars {
+		for _, e := range out {
+			if strings.HasPrefix(e, strings.ToUpper(k)) {
+				continue eloop
+			}
+		}
+
+		out = append(out, fmt.Sprintf("%s=%s", strings.ToUpper(k), v))
+	}
+
+	return out
+}
+
+func (s *Server) Log() *log.Entry {
+	return log.WithField("server", s.Uuid)
+}
+
 // Syncs the state of the server on the Panel with Wings. This ensures that we're always
 // using the state of the server from the Panel and allows us to not require successful
 // API calls to Wings to do things.
@@ -277,13 +324,16 @@ func (s *Server) Sync() error {
 		return errors.New(rerr.String())
 	}
 
+	return s.SyncWithConfiguration(cfg)
+}
+
+func (s *Server) SyncWithConfiguration(cfg *api.ServerConfigurationResponse) error {
 	// Update the data structure and persist it to the disk.
-	if err:= s.UpdateDataStructure(cfg.Settings, false); err != nil {
+	if err := s.UpdateDataStructure(cfg.Settings, false); err != nil {
 		return errors.WithStack(err)
 	}
 
 	s.processConfiguration = cfg.ProcessConfiguration
-
 	return nil
 }
 
@@ -306,68 +356,28 @@ func (s *Server) CreateEnvironment() error {
 	return s.Environment.Create()
 }
 
-const (
-	ProcessOfflineState  = "offline"
-	ProcessStartingState = "starting"
-	ProcessRunningState  = "running"
-	ProcessStoppingState = "stopping"
-)
-
-// Sets the state of the server internally. This function handles crash detection as
-// well as reporting to event listeners for the server.
-func (s *Server) SetState(state string) error {
-	if state != ProcessOfflineState && state != ProcessStartingState && state != ProcessRunningState && state != ProcessStoppingState {
-		return errors.New(fmt.Sprintf("invalid server state received: %s", state))
-	}
-
-	prevState := s.State
-	s.State = state
-
-	// Persist this change to the disk immediately so that should the Daemon be stopped or
-	// crash we can immediately restore the server state.
-	//
-	// This really only makes a difference if all of the Docker containers are also stopped,
-	// but this was a highly requested feature and isn't hard to work with, so lets do it.
-	//
-	// We also get the benefit of server status changes always propagating corrected configurations
-	// to the disk should we forget to do it elsewhere.
-	go func(server *Server) {
-		if _, err := server.WriteConfigurationToDisk(); err != nil {
-			zap.S().Warnw("failed to write server state change to disk", zap.String("server", server.Uuid), zap.Error(err))
-		}
-	}(s)
-
-	zap.S().Debugw("saw server status change event", zap.String("server", s.Uuid), zap.String("status", state))
-
-	// Emit the event to any listeners that are currently registered.
-	s.Emit(StatusEvent, s.State)
-
-	// If server was in an online state, and is now in an offline state we should handle
-	// that as a crash event. In that scenario, check the last crash time, and the crash
-	// counter.
-	//
-	// In the event that we have passed the thresholds, don't do anything, otherwise
-	// automatically attempt to start the process back up for the user. This is done in a
-	// seperate thread as to not block any actions currently taking place in the flow
-	// that called this function.
-	if (prevState == ProcessStartingState || prevState == ProcessRunningState) && s.State == ProcessOfflineState {
-		zap.S().Infow("detected server as entering a potentially crashed state; running handler", zap.String("server", s.Uuid))
-
-		go func(server *Server) {
-			if err := server.handleServerCrash(); err != nil {
-				if IsTooFrequentCrashError(err) {
-					zap.S().Infow("did not restart server after crash; occurred too soon after last", zap.String("server", server.Uuid))
-				} else {
-					zap.S().Errorw("failed to handle server crash state", zap.String("server", server.Uuid), zap.Error(err))
-				}
-			}
-		}(s)
-	}
-
-	return nil
-}
-
 // Gets the process configuration data for the server.
 func (s *Server) GetProcessConfiguration() (*api.ServerConfigurationResponse, *api.RequestError, error) {
 	return api.NewRequester().GetServerConfiguration(s.Uuid)
 }
+
+// Helper function that can receieve a power action and then process the
+// actions that need to occur for it.
+func (s *Server) HandlePowerAction(action PowerAction) error {
+	switch action.Action {
+	case "start":
+		return s.Environment.Start()
+	case "restart":
+		if err := s.Environment.WaitForStop(60, false); err != nil {
+			return err
+		}
+
+		return s.Environment.Start()
+	case "stop":
+		return s.Environment.Stop()
+	case "kill":
+		return s.Environment.Terminate(os.Kill)
+	default:
+		return errors.New("an invalid power action was provided")
+	}
+}

server/state.go

@@ -0,0 +1,142 @@
+package server
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/pkg/errors"
+	"github.com/pterodactyl/wings/config"
+	"io"
+	"io/ioutil"
+	"os"
+	"sync"
+)
+
+var stateMutex sync.Mutex
+
+// Returns the state of the servers.
+func getServerStates() (map[string]string, error) {
+	// Request a lock after we check if the file exists.
+	stateMutex.Lock()
+	defer stateMutex.Unlock()
+
+	// Open the states file.
+	f, err := os.OpenFile(config.Get().System.GetStatesPath(), os.O_RDONLY|os.O_CREATE, 0644)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+	defer f.Close()
+
+	// Convert the json object to a map.
+	states := map[string]string{}
+	if err := json.NewDecoder(f).Decode(&states); err != nil && err != io.EOF {
+		return nil, errors.WithStack(err)
+	}
+
+	return states, nil
+}
+
+// saveServerStates .
+func saveServerStates() error {
+	// Get the states of all servers on the daemon.
+	states := map[string]string{}
+	for _, s := range GetServers().All() {
+		states[s.Uuid] = s.GetState()
+	}
+
+	// Convert the map to a json object.
+	data, err := json.Marshal(states)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	stateMutex.Lock()
+	defer stateMutex.Unlock()
+
+	// Write the data to the file
+	if err := ioutil.WriteFile(config.Get().System.GetStatesPath(), data, 0644); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+const (
+	ProcessOfflineState  = "offline"
+	ProcessStartingState = "starting"
+	ProcessRunningState  = "running"
+	ProcessStoppingState = "stopping"
+)
+
+// Sets the state of the server internally. This function handles crash detection as
+// well as reporting to event listeners for the server.
+func (s *Server) SetState(state string) error {
+	if state != ProcessOfflineState && state != ProcessStartingState && state != ProcessRunningState && state != ProcessStoppingState {
+		return errors.New(fmt.Sprintf("invalid server state received: %s", state))
+	}
+
+	prevState := s.GetState()
+
+	// Obtain a mutex lock and update the current state of the server.
+	s.Lock()
+	s.State = state
+
+	// Emit the event to any listeners that are currently registered.
+	s.Log().WithField("status", s.State).Debug("saw server status change event")
+	s.Events().Publish(StatusEvent, s.State)
+
+	// Release the lock as it is no longer needed for the following actions.
+	s.Unlock()
+
+	// Persist this change to the disk immediately so that should the Daemon be stopped or
+	// crash we can immediately restore the server state.
+	//
+	// This really only makes a difference if all of the Docker containers are also stopped,
+	// but this was a highly requested feature and isn't hard to work with, so lets do it.
+	//
+	// We also get the benefit of server status changes always propagating corrected configurations
+	// to the disk should we forget to do it elsewhere.
+	go func() {
+		if err := saveServerStates(); err != nil {
+			s.Log().WithField("error", err).Warn("failed to write server states to disk")
+		}
+	}()
+
+	// If server was in an online state, and is now in an offline state we should handle
+	// that as a crash event. In that scenario, check the last crash time, and the crash
+	// counter.
+	//
+	// In the event that we have passed the thresholds, don't do anything, otherwise
+	// automatically attempt to start the process back up for the user. This is done in a
+	// separate thread as to not block any actions currently taking place in the flow
+	// that called this function.
+	if (prevState == ProcessStartingState || prevState == ProcessRunningState) && s.GetState() == ProcessOfflineState {
+		s.Log().Info("detected server as entering a crashed state; running crash handler")
+
+		go func(server *Server) {
+			if err := server.handleServerCrash(); err != nil {
+				if IsTooFrequentCrashError(err) {
+					server.Log().Info("did not restart server after crash; occurred too soon after the last")
+				} else {
+					server.Log().WithField("error", err).Error("failed to handle server crash")
+				}
+			}
+		}(s)
+	}
+
+	return nil
+}
+
+// Returns the current state of the server in a race-safe manner.
+func (s *Server) GetState() string {
+	s.RLock()
+	defer s.RUnlock()
+
+	return s.State
+}
+
+// Determines if the server state is running or not. This is different than the
+// environment state, it is simply the tracked state from this daemon instance, and
+// not the response from Docker.
+func (s *Server) IsRunning() bool {
+	return s.GetState() == ProcessRunningState || s.GetState() == ProcessStartingState
+}

server/update.go

@@ -3,11 +3,8 @@ package server
 import (
 	"encoding/json"
 	"github.com/buger/jsonparser"
-	"github.com/creasty/defaults"
 	"github.com/imdario/mergo"
 	"github.com/pkg/errors"
-	"go.uber.org/zap"
-	"os"
 )
 
 // Merges data passed through in JSON form into the existing server object.
@@ -26,21 +23,26 @@ func (s *Server) UpdateDataStructure(data []byte, background bool) error {
 	// Don't allow obviously corrupted data to pass through into this function. If the UUID
 	// doesn't match something has gone wrong and the API is attempting to meld this server
 	// instance into a totally different one, which would be bad.
-	if src.Uuid != "" && src.Uuid != s.Uuid {
+	if src.Uuid != "" && s.Uuid != "" && src.Uuid != s.Uuid {
 		return errors.New("attempting to merge a data stack with an invalid UUID")
 	}
 
-	// Set the default values in the interface that we unmarshaled into.
-	if err := defaults.Set(src); err != nil {
-		return errors.WithStack(err)
-	}
-
 	// Merge the new data object that we have received with the existing server data object
 	// and then save it to the disk so it is persistent.
 	if err := mergo.Merge(s, src, mergo.WithOverride); err != nil {
 		return errors.WithStack(err)
 	}
 
+	// Don't explode if we're setting CPU limits to 0. Mergo sees that as an empty value
+	// so it won't override the value we've passed through in the API call. However, we can
+	// safely assume that we're passing through valid data structures here. I foresee this
+	// backfiring at some point, but until then...
+	//
+	// We'll go ahead and do this with swap as well.
+	s.Build.CpuLimit = src.Build.CpuLimit
+	s.Build.Swap = src.Build.Swap
+	s.Build.DiskSpace = src.Build.DiskSpace
+
 	// Mergo can't quite handle this boolean value correctly, so for now we'll just
 	// handle this edge case manually since none of the other data passed through in this
 	// request is going to be boolean. Allegedly.
@@ -71,10 +73,6 @@ func (s *Server) UpdateDataStructure(data []byte, background bool) error {
 		s.Allocations.Mappings = src.Allocations.Mappings
 	}
 
-	if _, err := s.WriteConfigurationToDisk(); err != nil {
-		return errors.WithStack(err)
-	}
-
 	if background {
 		s.runBackgroundActions()
 	}
@@ -92,27 +90,20 @@ func (s *Server) runBackgroundActions() {
 	// Update the environment in place, allowing memory and CPU usage to be adjusted
 	// on the fly without the user needing to reboot (theoretically).
 	go func(server *Server) {
+		server.Log().Info("performing server limit modification on-the-fly")
 		if err := server.Environment.InSituUpdate(); err != nil {
-			zap.S().Warnw(
-				"failed to perform in-situ update of server environment",
-				zap.String("server", server.Uuid),
-				zap.Error(err),
-			)
+			server.Log().WithField("error", err).Warn("failed to perform on-the-fly update of the server environment")
 		}
 	}(s)
 
 	// Check if the server is now suspended, and if so and the process is not terminated
 	// yet, do it immediately.
 	go func(server *Server) {
-		if server.Suspended && server.State != ProcessOfflineState {
-			zap.S().Infow("server suspended with running process state, terminating now", zap.String("server", server.Uuid))
+		if server.Suspended && server.GetState() != ProcessOfflineState {
+			server.Log().Info("server suspended with running process state, terminating now")
 
-			if err := server.Environment.Terminate(os.Kill); err != nil {
-				zap.S().Warnw(
-					"failed to terminate server environment after seeing suspension",
-					zap.String("server", server.Uuid),
-					zap.Error(err),
-				)
+			if err := server.Environment.WaitForStop(10, true); err != nil {
+				server.Log().WithField("error", err).Warn("failed to terminate server environment after suspension")
 			}
 		}
 	}(s)

sftp/server.go

@@ -1,13 +1,13 @@
 package sftp
 
 import (
+	"github.com/apex/log"
 	"github.com/pkg/errors"
 	"github.com/pterodactyl/sftp-server"
 	"github.com/pterodactyl/wings/api"
 	"github.com/pterodactyl/wings/config"
 	"github.com/pterodactyl/wings/server"
 	"go.uber.org/zap"
-	"path"
 )
 
 func Initialize(config *config.Configuration) error {
@@ -21,8 +21,6 @@ func Initialize(config *config.Configuration) error {
 			ReadOnly:         config.System.Sftp.ReadOnly,
 			BindAddress:      config.System.Sftp.Address,
 			BindPort:         config.System.Sftp.Port,
-			ServerDataFolder: path.Join(config.System.Data, "/servers"),
-			DisableDiskCheck: config.System.Sftp.DisableDiskChecking,
 		},
 		CredentialValidator: validateCredentials,
 		PathValidator: validatePath,
@@ -41,7 +39,7 @@ func Initialize(config *config.Configuration) error {
 	// a long running operation.
 	go func(instance *sftp_server.Server) {
 		if err := c.Initalize(); err != nil {
-			zap.S().Named("sftp").Errorw("failed to initialize SFTP subsystem", zap.Error(errors.WithStack(err)))
+			log.WithField("subsystem", "sftp").WithField("error", errors.WithStack(err)).Error("failed to initialize SFTP subsystem")
 		}
 	}(c)
 
@@ -76,6 +74,8 @@ func validateDiskSpace(fs sftp_server.FileSystem) bool {
 // the server's UUID if the credentials were valid.
 func validateCredentials(c sftp_server.AuthenticationRequest) (*sftp_server.AuthenticationResponse, error) {
 	resp, err := api.NewRequester().ValidateSftpCredentials(c)
+
+	log.WithFields(log.Fields{"subsystem": "sftp", "username": c.User}).Debug("validating credentials for SFTP connection")
 	if err != nil {
 		return resp, err
 	}
@@ -85,8 +85,10 @@ func validateCredentials(c sftp_server.AuthenticationRequest) (*sftp_server.Auth
 	})
 
 	if s == nil {
-		return resp, errors.New("no server found with that UUID")
+		return resp, errors.New("no matching server with UUID found")
 	}
 
+	s.Log().WithFields(log.Fields{"subsystem": "sftp", "username": c.User}).Debug("matched user to server instance, credentials successfully validated")
+
 	return resp, err
 }

system/const.go

@@ -0,0 +1,6 @@
+package system
+
+const (
+	// The current version of this software.
+	Version = "1.0.0-beta.7"
+)

system/system.go

@@ -1,11 +1,11 @@
-package main
+package system
 
 import (
 	"github.com/docker/docker/pkg/parsers/kernel"
 	"runtime"
 )
 
-type SystemInformation struct {
+type Information struct {
 	Version       string `json:"version"`
 	KernelVersion string `json:"kernel_version"`
 	Architecture  string `json:"architecture"`
@@ -13,13 +13,13 @@ type SystemInformation struct {
 	CpuCount      int    `json:"cpu_count"`
 }
 
-func GetSystemInformation() (*SystemInformation, error) {
+func GetSystemInformation() (*Information, error) {
 	k, err := kernel.GetKernelVersion()
 	if err != nil {
 		return nil, err
 	}
 
-	s := &SystemInformation{
+	s := &Information{
 		Version:       Version,
 		KernelVersion: k.String(),
 		Architecture:  runtime.GOARCH,

websocket.go

@@ -1,417 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"github.com/gbrlsnchs/jwt/v3"
-	"github.com/google/uuid"
-	"github.com/gorilla/websocket"
-	"github.com/julienschmidt/httprouter"
-	"github.com/pkg/errors"
-	"github.com/pterodactyl/wings/config"
-	"github.com/pterodactyl/wings/server"
-	"go.uber.org/zap"
-	"net/http"
-	"os"
-	"strings"
-	"sync"
-	"time"
-)
-
-const (
-	AuthenticationSuccessEvent = "auth success"
-	TokenExpiringEvent         = "token expiring"
-	TokenExpiredEvent          = "token expired"
-	AuthenticationEvent        = "auth"
-	SetStateEvent              = "set state"
-	SendServerLogsEvent        = "send logs"
-	SendCommandEvent           = "send command"
-	ErrorEvent                 = "daemon error"
-)
-
-type WebsocketMessage struct {
-	// The event to perform. Should be one of the following that are supported:
-	//
-	// - status : Returns the server's power state.
-	// - logs : Returns the server log data at the time of the request.
-	// - power : Performs a power action aganist the server based the data.
-	// - command : Performs a command on a server using the data field.
-	Event string `json:"event"`
-
-	// The data to pass along, only used by power/command currently. Other requests
-	// should either omit the field or pass an empty value as it is ignored.
-	Args []string `json:"args,omitempty"`
-
-	// Is set to true when the request is originating from outside of the Daemon,
-	// otherwise set to false for outbound.
-	inbound bool
-}
-
-type WebsocketHandler struct {
-	Server     *server.Server
-	Mutex      sync.Mutex
-	Connection *websocket.Conn
-	JWT        *WebsocketTokenPayload
-}
-
-type WebsocketTokenPayload struct {
-	jwt.Payload
-	UserID      json.Number `json:"user_id"`
-	ServerUUID  string      `json:"server_uuid"`
-	Permissions []string    `json:"permissions"`
-}
-
-const (
-	PermissionConnect       = "connect"
-	PermissionSendCommand   = "send-command"
-	PermissionSendPower     = "send-power"
-	PermissionReceiveErrors = "receive-errors"
-)
-
-// Checks if the given token payload has a permission string.
-func (wtp *WebsocketTokenPayload) HasPermission(permission string) bool {
-	for _, k := range wtp.Permissions {
-		if k == permission {
-			return true
-		}
-	}
-
-	return false
-}
-
-var alg *jwt.HMACSHA
-
-// Validates the provided JWT against the known secret for the Daemon and returns the
-// parsed data.
-//
-// This function DOES NOT validate that the token is valid for the connected server, nor
-// does it ensure that the user providing the token is able to actually do things.
-func ParseJWT(token []byte) (*WebsocketTokenPayload, error) {
-	var payload WebsocketTokenPayload
-	if alg == nil {
-		alg = jwt.NewHS256([]byte(config.Get().AuthenticationToken))
-	}
-
-	_, err := jwt.Verify(token, alg, &payload)
-	if err != nil {
-		return nil, err
-	}
-
-	// Check the time of the JWT becoming valid does not exceed more than 15 seconds
-	// compared to the system time. This accounts for clock drift to some degree.
-	if time.Now().Unix()-payload.NotBefore.Unix() <= -15 {
-		return nil, errors.New("jwt violates nbf")
-	}
-
-	// Compare the expiration time of the token to the current system time. Include
-	// up to 15 seconds of clock drift, and if it has expired return an error and
-	// do not process the action.
-	if time.Now().Unix()-payload.ExpirationTime.Unix() > 15 {
-		return nil, errors.New("jwt violates exp")
-	}
-
-	if !payload.HasPermission(PermissionConnect) {
-		return nil, errors.New("not authorized to connect to this socket")
-	}
-
-	return &payload, nil
-}
-
-// Checks if the JWT is still valid.
-func (wsh *WebsocketHandler) TokenValid() error {
-	if wsh.JWT == nil {
-		return errors.New("no jwt present")
-	}
-
-	if time.Now().Unix()-wsh.JWT.ExpirationTime.Unix() > 15 {
-		return errors.New("jwt violates nbf")
-	}
-
-	if !wsh.JWT.HasPermission(PermissionConnect) {
-		return errors.New("jwt does not have connect permission")
-	}
-
-	if wsh.Server.Uuid != wsh.JWT.ServerUUID {
-		return errors.New("jwt server uuid mismatch")
-	}
-
-	return nil
-}
-
-// Handle a request for a specific server websocket. This will handle inbound requests as well
-// as ensure that any console output is also passed down the wire on the socket.
-func (rt *Router) routeWebsocket(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
-	c, err := rt.upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		zap.S().Errorw("error upgrading websocket", zap.Error(errors.WithStack(err)))
-		http.Error(w, "failed to upgrade websocket", http.StatusInternalServerError)
-
-		return
-	}
-
-	// Make a ticker and completion channel that is used to continuously poll the
-	// JWT stored in the session to send events to the socket when it is expiring.
-	ticker := time.NewTicker(time.Second * 30)
-	done := make(chan bool)
-
-	// Whenever this function is complete, end the ticker, close out the channel,
-	// and then close the websocket connection.
-	defer func() {
-		ticker.Stop()
-		done <- true
-		c.Close()
-	}()
-
-	s := rt.GetServer(ps.ByName("server"))
-	handler := WebsocketHandler{
-		Server:     s,
-		Mutex:      sync.Mutex{},
-		Connection: c,
-		JWT:        nil,
-	}
-
-	handleOutput := func(data string) {
-		handler.SendJson(&WebsocketMessage{
-			Event: server.ConsoleOutputEvent,
-			Args:  []string{data},
-		})
-	}
-
-	handleServerStatus := func(data string) {
-		handler.SendJson(&WebsocketMessage{
-			Event: server.StatusEvent,
-			Args:  []string{data},
-		})
-	}
-
-	handleResourceUse := func(data string) {
-		handler.SendJson(&WebsocketMessage{
-			Event: server.StatsEvent,
-			Args:  []string{data},
-		})
-	}
-
-	s.AddListener(server.StatusEvent, &handleServerStatus)
-	defer s.RemoveListener(server.StatusEvent, &handleServerStatus)
-
-	s.AddListener(server.ConsoleOutputEvent, &handleOutput)
-	defer s.RemoveListener(server.ConsoleOutputEvent, &handleOutput)
-
-	s.AddListener(server.StatsEvent, &handleResourceUse)
-	defer s.RemoveListener(server.StatsEvent, &handleResourceUse)
-
-	// Sit here and check the time to expiration on the JWT every 30 seconds until
-	// the token has expired. If we are within 3 minutes of the token expiring, send
-	// a notice over the socket that it is expiring soon. If it has expired, send that
-	// notice as well.
-	go func() {
-		for {
-			select {
-			case <-done:
-				return
-			case <-ticker.C:
-				{
-					if handler.JWT != nil {
-						if handler.JWT.ExpirationTime.Unix()-time.Now().Unix() <= 0 {
-							handler.SendJson(&WebsocketMessage{Event: TokenExpiredEvent})
-						} else if handler.JWT.ExpirationTime.Unix()-time.Now().Unix() <= 180 {
-							handler.SendJson(&WebsocketMessage{Event: TokenExpiringEvent})
-						}
-					}
-				}
-			}
-		}
-	}()
-
-	for {
-		j := WebsocketMessage{inbound: true}
-
-		_, p, err := c.ReadMessage()
-		if err != nil {
-			if !websocket.IsCloseError(
-				err,
-				websocket.CloseNormalClosure,
-				websocket.CloseGoingAway,
-				websocket.CloseNoStatusReceived,
-				websocket.CloseServiceRestart,
-				websocket.CloseAbnormalClosure,
-			) {
-				zap.S().Errorw("error handling websocket message", zap.Error(err))
-			}
-			break
-		}
-
-		// Discard and JSON parse errors into the void and don't continue processing this
-		// specific socket request. If we did a break here the client would get disconnected
-		// from the socket, which is NOT what we want to do.
-		if err := json.Unmarshal(p, &j); err != nil {
-			continue
-		}
-
-		if err := handler.HandleInbound(j); err != nil {
-			handler.SendErrorJson(err)
-		}
-	}
-}
-
-// Perform a blocking send operation on the websocket since we want to avoid any
-// concurrent writes to the connection, which would cause a runtime panic and cause
-// the program to crash out.
-func (wsh *WebsocketHandler) SendJson(v interface{}) error {
-	// Do not send JSON down the line if the JWT on the connection is not
-	// valid!
-	if err := wsh.TokenValid(); err != nil {
-		return nil
-	}
-
-	return wsh.unsafeSendJson(v)
-}
-
-// Sends JSON over the websocket connection, ignoring the authentication state of the
-// socket user. Do not call this directly unless you are positive a response should be
-// sent back to the client!
-func (wsh *WebsocketHandler) unsafeSendJson(v interface{}) error {
-	wsh.Mutex.Lock()
-	defer wsh.Mutex.Unlock()
-
-	return wsh.Connection.WriteJSON(v)
-}
-
-// Sends an error back to the connected websocket instance by checking the permissions
-// of the token. If the user has the "receive-errors" grant we will send back the actual
-// error message, otherwise we just send back a standard error message.
-func (wsh *WebsocketHandler) SendErrorJson(err error) error {
-	wsh.Mutex.Lock()
-	defer wsh.Mutex.Unlock()
-
-	message := "an unexpected error was encountered while handling this request"
-	if wsh.JWT != nil {
-		if server.IsSuspendedError(err) || wsh.JWT.HasPermission(PermissionReceiveErrors) {
-			message = err.Error()
-		}
-	}
-
-	m, u := wsh.GetErrorMessage(message)
-
-	wsm := WebsocketMessage{Event: ErrorEvent}
-	wsm.Args = []string{m}
-
-	if !server.IsSuspendedError(err) {
-		zap.S().Errorw(
-			"an error was encountered in the websocket process",
-			zap.String("server", wsh.Server.Uuid),
-			zap.String("error_identifier", u.String()),
-			zap.Error(err),
-		)
-	}
-
-	return wsh.Connection.WriteJSON(wsm)
-}
-
-// Converts an error message into a more readable representation and returns a UUID
-// that can be cross-referenced to find the specific error that triggered.
-func (wsh *WebsocketHandler) GetErrorMessage(msg string) (string, uuid.UUID) {
-	u, _ := uuid.NewRandom()
-
-	m := fmt.Sprintf("Error Event [%s]: %s", u.String(), msg)
-
-	return m, u
-}
-
-// Handle the inbound socket request and route it to the proper server action.
-func (wsh *WebsocketHandler) HandleInbound(m WebsocketMessage) error {
-	if !m.inbound {
-		return errors.New("cannot handle websocket message, not an inbound connection")
-	}
-
-	if m.Event != AuthenticationEvent {
-		if err := wsh.TokenValid(); err != nil {
-			zap.S().Debugw("jwt token is no longer valid", zap.String("message", err.Error()))
-
-			wsh.unsafeSendJson(WebsocketMessage{
-				Event: ErrorEvent,
-				Args:  []string{"could not authenticate client: " + err.Error()},
-			})
-
-			return nil
-		}
-	}
-
-	switch m.Event {
-	case AuthenticationEvent:
-		{
-			token, err := ParseJWT([]byte(strings.Join(m.Args, "")))
-			if err != nil {
-				return err
-			}
-
-			if token.HasPermission(PermissionConnect) {
-				wsh.JWT = token
-			}
-
-			// On every authentication event, send the current server status back
-			// to the client. :)
-			wsh.Server.Emit(server.StatusEvent, wsh.Server.State)
-
-			wsh.unsafeSendJson(WebsocketMessage{
-				Event: AuthenticationSuccessEvent,
-				Args:  []string{},
-			})
-
-			return nil
-		}
-	case SetStateEvent:
-		{
-			if !wsh.JWT.HasPermission(PermissionSendPower) {
-				return nil
-			}
-
-			switch strings.Join(m.Args, "") {
-			case "start":
-				return wsh.Server.Environment.Start()
-			case "stop":
-				return wsh.Server.Environment.Stop()
-			case "restart":
-				return nil
-			case "kill":
-				return wsh.Server.Environment.Terminate(os.Kill)
-			}
-
-			return nil
-		}
-	case SendServerLogsEvent:
-		{
-			if running, _ := wsh.Server.Environment.IsRunning(); !running {
-				return nil
-			}
-
-			logs, err := wsh.Server.Environment.Readlog(1024 * 16)
-			if err != nil {
-				return err
-			}
-
-			for _, line := range logs {
-				wsh.SendJson(&WebsocketMessage{
-					Event: server.ConsoleOutputEvent,
-					Args:  []string{line},
-				})
-			}
-
-			return nil
-		}
-	case SendCommandEvent:
-		{
-			if !wsh.JWT.HasPermission(PermissionSendCommand) {
-				return nil
-			}
-
-			if wsh.Server.State == server.ProcessOfflineState {
-				return nil
-			}
-
-			return wsh.Server.Environment.SendCommand(strings.Join(m.Args, ""))
-		}
-	}
-
-	return nil
-}

wings.go

@@ -1,221 +1,9 @@
 package main
 
 import (
-	"crypto/tls"
-	"flag"
-	"fmt"
-	"github.com/gorilla/websocket"
-	"github.com/pkg/errors"
-	"github.com/pterodactyl/wings/config"
-	"github.com/pterodactyl/wings/server"
-	"github.com/pterodactyl/wings/sftp"
-	"github.com/remeh/sizedwaitgroup"
-	"go.uber.org/zap"
-	"net/http"
-	"os"
+	"github.com/pterodactyl/wings/cmd"
 )
 
-var configPath = "config.yml"
-var debug = false
-
-// Entrypoint for the Wings application. Configures the logger and checks any
-// flags that were passed through in the boot arguments.
 func main() {
-	flag.StringVar(&configPath, "config", "config.yml", "set the location for the configuration file")
-	flag.BoolVar(&debug, "debug", false, "pass in order to run wings in debug mode")
-
-	flag.Parse()
-
-	c, err := config.ReadConfiguration(configPath)
-	if err != nil {
-		panic(err)
-		return
-	}
-
-	if debug {
-		c.Debug = true
-	}
-
-	printLogo()
-	if err := configureLogging(c.Debug); err != nil {
-		panic(err)
-	}
-
-	zap.S().Infof("using configuration from path: %s", configPath)
-	if c.Debug {
-		zap.S().Debugw("running in debug mode")
-		zap.S().Infow("certificate checking is disabled")
-
-		http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{
-			InsecureSkipVerify: true,
-		}
-	}
-
-	config.Set(c)
-	config.SetDebugViaFlag(debug)
-
-	zap.S().Infof("checking for pterodactyl system user \"%s\"", c.System.User)
-	if su, err := c.EnsurePterodactylUser(); err != nil {
-		zap.S().Panicw("failed to create pterodactyl system user", zap.Error(err))
-		return
-	} else {
-		zap.S().Infow("configured system user", zap.String("username", su.Username), zap.String("uid", su.Uid), zap.String("gid", su.Gid))
-	}
-
-	zap.S().Infow("beginnning file permission setting on server data directories")
-	if err := c.EnsureFilePermissions(); err != nil {
-		zap.S().Errorw("failed to properly chown data directories", zap.Error(err))
-	} else {
-		zap.S().Infow("finished ensuring file permissions")
-	}
-
-	if err := server.LoadDirectory("data/servers", &c.System); err != nil {
-		zap.S().Fatalw("failed to load server configurations", zap.Error(errors.WithStack(err)))
-		return
-	}
-
-	if err := ConfigureDockerEnvironment(&c.Docker); err != nil {
-		zap.S().Fatalw("failed to configure docker environment", zap.Error(errors.WithStack(err)))
-		os.Exit(1)
-	}
-
-	if err := c.WriteToDisk(); err != nil {
-		zap.S().Errorw("failed to save configuration to disk", zap.Error(errors.WithStack(err)))
-	}
-
-	// Just for some nice log output.
-	for _, s := range server.GetServers().All() {
-		zap.S().Infow("loaded configuration for server", zap.String("server", s.Uuid))
-	}
-
-	// Create a new WaitGroup that limits us to 4 servers being bootstrapped at a time
-	// on Wings. This allows us to ensure the environment exists, write configurations,
-	// and reboot processes without causing a slow-down due to sequential booting.
-	wg := sizedwaitgroup.New(4)
-
-	for _, serv := range server.GetServers().All() {
-		wg.Add()
-
-		go func(s *server.Server) {
-			defer wg.Done()
-
-			// Create a server environment if none exists currently. This allows us to recover from Docker
-			// being reinstalled on the host system for example.
-			zap.S().Infow("ensuring envrionment exists", zap.String("server", s.Uuid))
-			if err := s.Environment.Create(); err != nil {
-				zap.S().Errorw("failed to create an environment for server", zap.String("server", s.Uuid), zap.Error(err))
-			}
-
-			if r, err := s.Environment.IsRunning(); err != nil {
-				zap.S().Errorw("error checking server environment status", zap.String("server", s.Uuid), zap.Error(err))
-			} else if r {
-				// If the server is currently running on Docker, mark the process as being in that state.
-				// We never want to stop an instance that is currently running external from Wings since
-				// that is a good way of keeping things running even if Wings gets in a very corrupted state.
-				zap.S().Infow("detected server is running, re-attaching to process", zap.String("server", s.Uuid))
-				if err := s.Sync(); err != nil {
-					zap.S().Errorw("failed to sync server state, cannot mark as running", zap.String("server", s.Uuid), zap.Error(errors.WithStack(err)))
-				} else {
-					s.SetState(server.ProcessRunningState)
-
-					// If we cannot attach to the environment go ahead and mark the processs as being offline.
-					if err := s.Environment.Attach(); err != nil {
-						zap.S().Warnw("error attaching to server environment", zap.String("server", s.Uuid), zap.Error(err))
-						s.SetState(server.ProcessOfflineState)
-					}
-				}
-			} else if !r {
-				// If the server is not in a running state right now but according to the configuration it
-				// should be, we want to go ahead and restart the instance.
-				if s.State == server.ProcessRunningState || s.State == server.ProcessStartingState {
-					zap.S().Infow(
-						"server state does not match last recorded state in configuration, starting instance now",
-						zap.String("server", s.Uuid),
-					)
-
-					if err := s.Environment.Start(); err != nil {
-						zap.S().Warnw(
-							"failed to put server instance back in running state",
-							zap.String("server", s.Uuid),
-							zap.Error(errors.WithStack(err)),
-						)
-					}
-				} else {
-					if s.State == "" {
-						// Addresses potentially invalid data in the stored file that can cause Wings to lose
-						// track of what the actual server state is.
-						s.SetState(server.ProcessOfflineState)
-					}
-				}
-			}
-		}(serv)
-	}
-
-	// Wait until all of the servers are ready to go before we fire up the HTTP server.
-	wg.Wait()
-
-	// If the SFTP subsystem should be started, do so now.
-	if c.System.Sftp.UseInternalSystem {
-		sftp.Initialize(c)
-	}
-
-	r := &Router{
-		token: c.AuthenticationToken,
-		upgrader: websocket.Upgrader{
-			// Ensure that the websocket request is originating from the Panel itself,
-			// and not some other location.
-			CheckOrigin: func(r *http.Request) bool {
-				return r.Header.Get("Origin") == c.PanelLocation
-			},
-		},
-	}
-
-	router := r.ConfigureRouter()
-	zap.S().Infow("configuring webserver", zap.Bool("ssl", c.Api.Ssl.Enabled), zap.String("host", c.Api.Host), zap.Int("port", c.Api.Port))
-
-	addr := fmt.Sprintf("%s:%d", c.Api.Host, c.Api.Port)
-	if c.Api.Ssl.Enabled {
-		if err := http.ListenAndServeTLS(addr, c.Api.Ssl.CertificateFile, c.Api.Ssl.KeyFile, router); err != nil {
-			zap.S().Fatalw("failed to configure HTTPS server", zap.Error(err))
-		}
-	} else {
-		if err := http.ListenAndServe(addr, router); err != nil {
-			zap.S().Fatalw("failed to configure HTTP server", zap.Error(err))
-		}
-	}
-}
-
-// Configures the global logger for Zap so that we can call it from any location
-// in the code without having to pass around a logger instance.
-func configureLogging(debug bool) error {
-	cfg := zap.NewProductionConfig()
-	if debug {
-		cfg = zap.NewDevelopmentConfig()
-	}
-
-	cfg.Encoding = "console"
-	cfg.OutputPaths = []string{
-		"stdout",
-	}
-
-	logger, err := cfg.Build()
-	if err != nil {
-		return err
-	}
-
-	zap.ReplaceGlobals(logger)
-
-	return nil
-}
-
-// Prints the wings logo, nothing special here!
-func printLogo() {
-	fmt.Println()
-	fmt.Println(`                     ____`)
-	fmt.Println(`__ Pterodactyl _____/___/_______ _______ ______`)
-	fmt.Println(`\_____\    \/\/    /   /       /  __   /   ___/`)
-	fmt.Println(`   \___\          /   /   /   /  /_/  /___   /`)
-	fmt.Println(`        \___/\___/___/___/___/___    /______/`)
-	fmt.Println(`                            /_______/ v` + Version)
-	fmt.Println()
+	cmd.Execute()
 }