wings/server/archiver.go

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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 {
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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
}
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// Stat stats the archive file.
func (a *Archiver) Stat() (*Stat, error) {
return a.Server.Filesystem.unsafeStat(a.ArchivePath())
}
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// 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()))
}
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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())
}
// 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
}