wings/wings.go

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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"
)
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
}
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printLogo()
if err := configureLogging(c.Debug); err != nil {
panic(err)
}
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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.Username)
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")
}
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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))
}
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r, err := s.Environment.IsRunning()
if err != nil {
zap.S().Errorw("error checking server environment status", zap.String("server", s.Uuid), zap.Error(err))
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}
// 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.State == server.ProcessRunningState || s.State == server.ProcessStartingState)) {
zap.S().Infow("detected server is running, re-attaching to process", zap.String("server", s.Uuid))
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if err := s.Environment.Start(); err != nil {
zap.S().Warnw(
"failed to properly start server detected as already running",
zap.String("server", s.Uuid),
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zap.Error(errors.WithStack(err)),
)
}
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return
}
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// 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 {
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sftp.Initialize(c)
}
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// Ensure the archive directory exists.
if err := os.MkdirAll(c.System.ArchiveDirectory, 0755); err != nil {
zap.S().Errorw("failed to create archive directory", zap.Error(err))
}
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()
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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.
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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()
}