serve.go 7.6 KB

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  1. // Copyright 2014 The Gogs Authors. All rights reserved.
  2. // Use of this source code is governed by a MIT-style
  3. // license that can be found in the LICENSE file.
  4. package cmd
  5. import (
  6. "crypto/tls"
  7. "fmt"
  8. "os"
  9. "os/exec"
  10. "path/filepath"
  11. "strings"
  12. "time"
  13. "github.com/Unknwon/com"
  14. "github.com/codegangsta/cli"
  15. "github.com/gogits/gogs/models"
  16. "github.com/gogits/gogs/modules/httplib"
  17. "github.com/gogits/gogs/modules/log"
  18. "github.com/gogits/gogs/modules/setting"
  19. "github.com/gogits/gogs/modules/uuid"
  20. )
  21. const (
  22. _ACCESS_DENIED_MESSAGE = "Repository does not exist or you do not have access"
  23. )
  24. var CmdServ = cli.Command{
  25. Name: "serv",
  26. Usage: "This command should only be called by SSH shell",
  27. Description: `Serv provide access auth for repositories`,
  28. Action: runServ,
  29. Flags: []cli.Flag{
  30. stringFlag("config, c", "custom/conf/app.ini", "Custom configuration file path"),
  31. },
  32. }
  33. func setup(logPath string) {
  34. setting.NewContext()
  35. log.NewGitLogger(filepath.Join(setting.LogRootPath, logPath))
  36. if setting.DisableSSH {
  37. println("Gogs: SSH has been disabled")
  38. os.Exit(1)
  39. }
  40. models.LoadConfigs()
  41. if setting.UseSQLite3 || setting.UseTiDB {
  42. workDir, _ := setting.WorkDir()
  43. os.Chdir(workDir)
  44. }
  45. models.SetEngine()
  46. }
  47. func parseCmd(cmd string) (string, string) {
  48. ss := strings.SplitN(cmd, " ", 2)
  49. if len(ss) != 2 {
  50. return "", ""
  51. }
  52. return ss[0], strings.Replace(ss[1], "'/", "'", 1)
  53. }
  54. var (
  55. allowedCommands = map[string]models.AccessMode{
  56. "git-upload-pack": models.ACCESS_MODE_READ,
  57. "git-upload-archive": models.ACCESS_MODE_READ,
  58. "git-receive-pack": models.ACCESS_MODE_WRITE,
  59. }
  60. )
  61. func fail(userMessage, logMessage string, args ...interface{}) {
  62. fmt.Fprintln(os.Stderr, "Gogs:", userMessage)
  63. if len(logMessage) > 0 {
  64. if !setting.ProdMode {
  65. fmt.Fprintf(os.Stderr, logMessage+"\n", args...)
  66. }
  67. log.GitLogger.Fatal(3, logMessage, args...)
  68. return
  69. }
  70. log.GitLogger.Close()
  71. os.Exit(1)
  72. }
  73. func handleUpdateTask(uuid string, user *models.User, username, reponame string, isWiki bool) {
  74. task, err := models.GetUpdateTaskByUUID(uuid)
  75. if err != nil {
  76. if models.IsErrUpdateTaskNotExist(err) {
  77. log.GitLogger.Trace("No update task is presented: %s", uuid)
  78. return
  79. }
  80. log.GitLogger.Fatal(2, "GetUpdateTaskByUUID: %v", err)
  81. } else if err = models.DeleteUpdateTaskByUUID(uuid); err != nil {
  82. log.GitLogger.Fatal(2, "DeleteUpdateTaskByUUID: %v", err)
  83. }
  84. if isWiki {
  85. return
  86. }
  87. if err = models.Update(task.RefName, task.OldCommitID, task.NewCommitID,
  88. user.Name, username, reponame, user.Id); err != nil {
  89. log.GitLogger.Error(2, "Update: %v", err)
  90. }
  91. // Ask for running deliver hook and test pull request tasks.
  92. reqURL := setting.LocalUrl + username + "/" + reponame + "/tasks/trigger?branch=" +
  93. strings.TrimPrefix(task.RefName, "refs/heads/")
  94. log.GitLogger.Trace("Trigger task: %s", reqURL)
  95. resp, err := httplib.Head(reqURL).SetTLSClientConfig(&tls.Config{
  96. InsecureSkipVerify: true,
  97. }).Response()
  98. if err == nil {
  99. resp.Body.Close()
  100. if resp.StatusCode/100 != 2 {
  101. log.GitLogger.Error(2, "Fail to trigger task: not 2xx response code")
  102. }
  103. } else {
  104. log.GitLogger.Error(2, "Fail to trigger task: %v", err)
  105. }
  106. }
  107. func runServ(c *cli.Context) {
  108. if c.IsSet("config") {
  109. setting.CustomConf = c.String("config")
  110. }
  111. setup("serv.log")
  112. if len(c.Args()) < 1 {
  113. fail("Not enough arguments", "Not enough arguments")
  114. }
  115. cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
  116. if len(cmd) == 0 {
  117. println("Hi there, You've successfully authenticated, but Gogs does not provide shell access.")
  118. println("If this is unexpected, please log in with password and setup Gogs under another user.")
  119. return
  120. }
  121. verb, args := parseCmd(cmd)
  122. repoPath := strings.ToLower(strings.Trim(args, "'"))
  123. rr := strings.SplitN(repoPath, "/", 2)
  124. if len(rr) != 2 {
  125. fail("Invalid repository path", "Invalid repository path: %v", args)
  126. }
  127. username := strings.ToLower(rr[0])
  128. reponame := strings.ToLower(strings.TrimSuffix(rr[1], ".git"))
  129. isWiki := false
  130. if strings.HasSuffix(reponame, ".wiki") {
  131. isWiki = true
  132. reponame = reponame[:len(reponame)-5]
  133. }
  134. repoUser, err := models.GetUserByName(username)
  135. if err != nil {
  136. if models.IsErrUserNotExist(err) {
  137. fail("Repository owner does not exist", "Unregistered owner: %s", username)
  138. }
  139. fail("Internal error", "Failed to get repository owner(%s): %v", username, err)
  140. }
  141. repo, err := models.GetRepositoryByName(repoUser.Id, reponame)
  142. if err != nil {
  143. if models.IsErrRepoNotExist(err) {
  144. fail(_ACCESS_DENIED_MESSAGE, "Repository does not exist: %s/%s", repoUser.Name, reponame)
  145. }
  146. fail("Internal error", "Failed to get repository: %v", err)
  147. }
  148. requestedMode, has := allowedCommands[verb]
  149. if !has {
  150. fail("Unknown git command", "Unknown git command %s", verb)
  151. }
  152. // Prohibit push to mirror repositories.
  153. if requestedMode > models.ACCESS_MODE_READ && repo.IsMirror {
  154. fail("mirror repository is read-only", "")
  155. }
  156. // Allow anonymous clone for public repositories.
  157. var (
  158. keyID int64
  159. user *models.User
  160. )
  161. if requestedMode == models.ACCESS_MODE_WRITE || repo.IsPrivate {
  162. keys := strings.Split(c.Args()[0], "-")
  163. if len(keys) != 2 {
  164. fail("Key ID format error", "Invalid key argument: %s", c.Args()[0])
  165. }
  166. key, err := models.GetPublicKeyByID(com.StrTo(keys[1]).MustInt64())
  167. if err != nil {
  168. fail("Invalid key ID", "Invalid key ID[%s]: %v", c.Args()[0], err)
  169. }
  170. keyID = key.ID
  171. // Check deploy key or user key.
  172. if key.Type == models.KEY_TYPE_DEPLOY {
  173. if key.Mode < requestedMode {
  174. fail("Key permission denied", "Cannot push with deployment key: %d", key.ID)
  175. }
  176. // Check if this deploy key belongs to current repository.
  177. if !models.HasDeployKey(key.ID, repo.ID) {
  178. fail("Key access denied", "Key access denied: %d-%d", key.ID, repo.ID)
  179. }
  180. // Update deploy key activity.
  181. deployKey, err := models.GetDeployKeyByRepo(key.ID, repo.ID)
  182. if err != nil {
  183. fail("Internal error", "GetDeployKey: %v", err)
  184. }
  185. deployKey.Updated = time.Now()
  186. if err = models.UpdateDeployKey(deployKey); err != nil {
  187. fail("Internal error", "UpdateDeployKey: %v", err)
  188. }
  189. } else {
  190. user, err = models.GetUserByKeyID(key.ID)
  191. if err != nil {
  192. fail("internal error", "Failed to get user by key ID(%d): %v", keyID, err)
  193. }
  194. mode, err := models.AccessLevel(user, repo)
  195. if err != nil {
  196. fail("Internal error", "Fail to check access: %v", err)
  197. } else if mode < requestedMode {
  198. clientMessage := _ACCESS_DENIED_MESSAGE
  199. if mode >= models.ACCESS_MODE_READ {
  200. clientMessage = "You do not have sufficient authorization for this action"
  201. }
  202. fail(clientMessage,
  203. "User %s does not have level %v access to repository %s",
  204. user.Name, requestedMode, repoPath)
  205. }
  206. }
  207. }
  208. uuid := uuid.NewV4().String()
  209. os.Setenv("uuid", uuid)
  210. // Special handle for Windows.
  211. if setting.IsWindows {
  212. verb = strings.Replace(verb, "-", " ", 1)
  213. }
  214. var gitcmd *exec.Cmd
  215. verbs := strings.Split(verb, " ")
  216. if len(verbs) == 2 {
  217. gitcmd = exec.Command(verbs[0], verbs[1], repoPath)
  218. } else {
  219. gitcmd = exec.Command(verb, repoPath)
  220. }
  221. gitcmd.Dir = setting.RepoRootPath
  222. gitcmd.Stdout = os.Stdout
  223. gitcmd.Stdin = os.Stdin
  224. gitcmd.Stderr = os.Stderr
  225. if err = gitcmd.Run(); err != nil {
  226. fail("Internal error", "Failed to execute git command: %v", err)
  227. }
  228. if requestedMode == models.ACCESS_MODE_WRITE {
  229. handleUpdateTask(uuid, user, username, reponame, isWiki)
  230. }
  231. // Update user key activity.
  232. if keyID > 0 {
  233. key, err := models.GetPublicKeyByID(keyID)
  234. if err != nil {
  235. fail("Internal error", "GetPublicKeyById: %v", err)
  236. }
  237. key.Updated = time.Now()
  238. if err = models.UpdatePublicKey(key); err != nil {
  239. fail("Internal error", "UpdatePublicKey: %v", err)
  240. }
  241. }
  242. }