mirror of
https://github.com/go-gitea/gitea
synced 2024-08-17 12:50:52 +02:00
204 lines
5.3 KiB
Go
204 lines
5.3 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package cmd
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import (
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"fmt"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/codegangsta/cli"
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"github.com/gogits/gogs/models"
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"github.com/gogits/gogs/modules/log"
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"github.com/gogits/gogs/modules/setting"
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"github.com/gogits/gogs/modules/uuid"
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)
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var CmdServ = cli.Command{
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Name: "serv",
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Usage: "This command should only be called by SSH shell",
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Description: `Serv provide access auth for repositories`,
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Action: runServ,
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Flags: []cli.Flag{},
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}
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func setup(logPath string) {
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setting.NewConfigContext()
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log.NewGitLogger(filepath.Join(setting.LogRootPath, logPath))
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models.LoadModelsConfig()
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if models.UseSQLite3 {
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workDir, _ := setting.WorkDir()
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os.Chdir(workDir)
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}
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models.SetEngine()
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}
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func parseCmd(cmd string) (string, string) {
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ss := strings.SplitN(cmd, " ", 2)
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if len(ss) != 2 {
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return "", ""
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}
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verb, args := ss[0], ss[1]
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if verb == "git" {
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ss = strings.SplitN(args, " ", 2)
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args = ss[1]
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verb = fmt.Sprintf("%s %s", verb, ss[0])
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}
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return verb, strings.Replace(args, "'/", "'", 1)
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}
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var (
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COMMANDS_READONLY = map[string]models.AccessType{
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"git-upload-pack": models.WRITABLE,
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"git upload-pack": models.WRITABLE,
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"git-upload-archive": models.WRITABLE,
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}
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COMMANDS_WRITE = map[string]models.AccessType{
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"git-receive-pack": models.READABLE,
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"git receive-pack": models.READABLE,
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}
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)
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func In(b string, sl map[string]models.AccessType) bool {
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_, e := sl[b]
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return e
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}
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func runServ(k *cli.Context) {
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setup("serv.log")
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keys := strings.Split(os.Args[2], "-")
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if len(keys) != 2 {
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println("Gogs: auth file format error")
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log.GitLogger.Fatal("Invalid auth file format: %s", os.Args[2])
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}
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keyId, err := strconv.ParseInt(keys[1], 10, 64)
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if err != nil {
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println("Gogs: auth file format error")
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log.GitLogger.Fatal("Invalid auth file format: %v", err)
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}
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user, err := models.GetUserByKeyId(keyId)
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if err != nil {
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if err == models.ErrUserNotKeyOwner {
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println("Gogs: you are not the owner of SSH key")
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log.GitLogger.Fatal("Invalid owner of SSH key: %d", keyId)
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}
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println("Gogs: internal error:", err)
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log.GitLogger.Fatal("Fail to get user by key ID(%d): %v", keyId, err)
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}
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cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
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if cmd == "" {
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println("Hi", user.Name, "! You've successfully authenticated, but Gogs does not provide shell access.")
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return
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}
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verb, args := parseCmd(cmd)
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repoPath := strings.Trim(args, "'")
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rr := strings.SplitN(repoPath, "/", 2)
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if len(rr) != 2 {
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println("Gogs: unavailable repository", args)
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log.GitLogger.Fatal("Unavailable repository: %v", args)
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}
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repoUserName := rr[0]
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repoName := strings.TrimSuffix(rr[1], ".git")
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isWrite := In(verb, COMMANDS_WRITE)
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isRead := In(verb, COMMANDS_READONLY)
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repoUser, err := models.GetUserByName(repoUserName)
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if err != nil {
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if err == models.ErrUserNotExist {
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println("Gogs: given repository owner are not registered")
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log.GitLogger.Fatal("Unregistered owner: %s", repoUserName)
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}
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println("Gogs: internal error:", err)
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log.GitLogger.Fatal("Fail to get repository owner(%s): %v", repoUserName, err)
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}
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// Access check.
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switch {
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case isWrite:
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has, err := models.HasAccess(user.Name, path.Join(repoUserName, repoName), models.WRITABLE)
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if err != nil {
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println("Gogs: internal error:", err)
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log.GitLogger.Fatal("Fail to check write access:", err)
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} else if !has {
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println("You have no right to write this repository")
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log.GitLogger.Fatal("User %s has no right to write repository %s", user.Name, repoPath)
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}
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case isRead:
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repo, err := models.GetRepositoryByName(repoUser.Id, repoName)
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if err != nil {
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if err == models.ErrRepoNotExist {
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println("Gogs: given repository does not exist")
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log.GitLogger.Fatal("Repository does not exist: %s/%s", repoUser.Name, repoName)
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}
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println("Gogs: internal error:", err)
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log.GitLogger.Fatal("Fail to get repository: %v", err)
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}
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if !repo.IsPrivate {
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break
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}
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has, err := models.HasAccess(user.Name, path.Join(repoUserName, repoName), models.READABLE)
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if err != nil {
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println("Gogs: internal error:", err)
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log.GitLogger.Fatal("Fail to check read access:", err)
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} else if !has {
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println("You have no right to access this repository")
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log.GitLogger.Fatal("User %s has no right to read repository %s", user.Name, repoPath)
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}
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default:
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println("Unknown command")
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return
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}
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uuid := uuid.NewV4().String()
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os.Setenv("uuid", uuid)
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gitcmd := exec.Command(verb, repoPath)
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gitcmd.Dir = setting.RepoRootPath
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gitcmd.Stdout = os.Stdout
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gitcmd.Stdin = os.Stdin
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gitcmd.Stderr = os.Stderr
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err = gitcmd.Run()
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if err != nil {
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println("Gogs: internal error:", err)
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log.GitLogger.Fatal("Fail to execute git command: %v", err)
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}
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if isWrite {
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tasks, err := models.GetUpdateTasksByUuid(uuid)
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if err != nil {
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log.GitLogger.Fatal("Fail to get update task: %v", err)
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}
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for _, task := range tasks {
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err = models.Update(task.RefName, task.OldCommitId, task.NewCommitId,
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user.Name, repoUserName, repoName, user.Id)
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if err != nil {
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log.GitLogger.Fatal("Fail to update: %v", err)
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}
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}
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err = models.DelUpdateTasksByUuid(uuid)
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if err != nil {
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log.GitLogger.Fatal("Fail to del update task: %v", err)
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}
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}
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}
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