From aa68e86206d7d9fc74de8630acfa07dfd7f1bc95 Mon Sep 17 00:00:00 2001 From: Peter Smit Date: Mon, 16 Feb 2015 16:38:01 +0200 Subject: [PATCH] Rewrite/simplify gogs serve --- cmd/serve.go | 130 ++++++++++++++++++++----------------------------- models/user.go | 4 +- 2 files changed, 54 insertions(+), 80 deletions(-) diff --git a/cmd/serve.go b/cmd/serve.go index e8e5c186..20c9b458 100644 --- a/cmd/serve.go +++ b/cmd/serve.go @@ -21,6 +21,10 @@ import ( "github.com/gogits/gogs/modules/uuid" ) +const ( + ACCESS_DENIED_MESSAGE = "Repository does not exist or you do not have access" +) + var CmdServ = cli.Command{ Name: "serv", Usage: "This command should only be called by SSH shell", @@ -51,72 +55,58 @@ func setup(logPath string) { } func parseCmd(cmd string) (string, string) { + ss := strings.SplitN(cmd, " ", 2) if len(ss) != 2 { return "", "" } - - verb, args := ss[0], ss[1] - if verb == "git" { - ss = strings.SplitN(args, " ", 2) - args = ss[1] - verb = fmt.Sprintf("%s %s", verb, ss[0]) - } - return verb, strings.Replace(args, "'/", "'", 1) + return ss[0], strings.Replace(ss[1], "'/", "'", 1) } var ( - COMMANDS_READONLY = map[string]models.AccessMode{ - "git-upload-pack": models.ACCESS_MODE_WRITE, - "git upload-pack": models.ACCESS_MODE_WRITE, - "git-upload-archive": models.ACCESS_MODE_WRITE, - } - - COMMANDS_WRITE = map[string]models.AccessMode{ - "git-receive-pack": models.ACCESS_MODE_READ, - "git receive-pack": models.ACCESS_MODE_READ, + COMMANDS = map[string]models.AccessMode{ + "git-upload-pack": models.ACCESS_MODE_READ, + "git-upload-archive": models.ACCESS_MODE_READ, + "git-receive-pack": models.ACCESS_MODE_WRITE, } ) -func In(b string, sl map[string]models.AccessMode) bool { - _, e := sl[b] - return e -} - func runServ(c *cli.Context) { if c.IsSet("config") { setting.CustomConf = c.String("config") } setup("serv.log") - if len(c.Args()) < 1 { - log.GitLogger.Fatal(2, "Not enough arguments") + fail := func(userMessage, logMessage string, args ...interface{}) { + fmt.Fprintln(os.Stderr, "Gogs: ", userMessage) + log.GitLogger.Fatal(2, logMessage, args...) } + + if len(c.Args()) < 1 { + fail("Not enough arguments", "Not enough arugments") + } + keys := strings.Split(c.Args()[0], "-") if len(keys) != 2 { - println("Gogs: auth file format error") - log.GitLogger.Fatal(2, "Invalid auth file format: %s", os.Args[2]) + fail("key-id format error", "Invalid key id: %s", c.Args()[0]) } keyId, err := com.StrTo(keys[1]).Int64() if err != nil { - println("Gogs: auth file format error") - log.GitLogger.Fatal(2, "Invalid auth file format: %v", err) + fail("key-id format error", "Invalid key id: %s", err) } + user, err := models.GetUserByKeyId(keyId) if err != nil { - if err == models.ErrUserNotKeyOwner { - println("Gogs: you are not the owner of SSH key") - log.GitLogger.Fatal(2, "Invalid owner of SSH key: %d", keyId) - } - println("Gogs: internal error:", err.Error()) - log.GitLogger.Fatal(2, "Fail to get user by key ID(%d): %v", keyId, err) + fail("internal error", "Fail to get user by key ID(%d): %v", keyId, err) } cmd := os.Getenv("SSH_ORIGINAL_COMMAND") if cmd == "" { println("Hi", user.Name, "! You've successfully authenticated, but Gogs does not provide shell access.") - println("If this is what you do not expect, please log in with password and setup Gogs under another user.") + if user.IsAdmin { + println("If this is unexpected, please log in with password and setup Gogs under another user.") + } return } @@ -124,62 +114,47 @@ func runServ(c *cli.Context) { repoPath := strings.Trim(args, "'") rr := strings.SplitN(repoPath, "/", 2) if len(rr) != 2 { - println("Gogs: unavailable repository", args) - log.GitLogger.Fatal(2, "Unavailable repository: %v", args) + fail("Invalid repository path", "Invalide repository path: %v", args) } repoUserName := rr[0] repoName := strings.TrimSuffix(rr[1], ".git") - isWrite := In(verb, COMMANDS_WRITE) - isRead := In(verb, COMMANDS_READONLY) - repoUser, err := models.GetUserByName(repoUserName) if err != nil { if err == models.ErrUserNotExist { - println("Gogs: given repository owner are not registered") - log.GitLogger.Fatal(2, "Unregistered owner: %s", repoUserName) + fail("Repository owner does not exist", "Unregistered owner: %s", repoUserName) } - println("Gogs: internal error:", err.Error()) - log.GitLogger.Fatal(2, "Fail to get repository owner(%s): %v", repoUserName, err) + fail("Internal error", "Fail to get repository owner(%s): %v", repoUserName, err) } - // Access check. repo, err := models.GetRepositoryByName(repoUser.Id, repoName) if err != nil { if err == models.ErrRepoNotExist { - println("Gogs: given repository does not exist") - log.GitLogger.Fatal(2, "Repository does not exist: %s/%s", repoUser.Name, repoName) + if user.Id == repoUser.Id || repoUser.IsOwnedBy(user.Id) { + fail("Repository does not exist", "Repository does not exist: %s/%s", repoUser.Name, repoName) + } else { + fail(ACCESS_DENIED_MESSAGE, "Repository does not exist: %s/%s", repoUser.Name, repoName) + } } - println("Gogs: internal error:", err.Error()) - log.GitLogger.Fatal(2, "Fail to get repository: %v", err) + fail("Internal error", "Fail to get repository: %v", err) } - switch { - case isWrite: - has, err := models.HasAccess(user, repo, models.ACCESS_MODE_WRITE) - if err != nil { - println("Gogs: internal error:", err.Error()) - log.GitLogger.Fatal(2, "Fail to check write access:", err) - } else if !has { - println("You have no right to write this repository") - log.GitLogger.Fatal(2, "User %s has no right to write repository %s", user.Name, repoPath) - } - case isRead: - if !repo.IsPrivate { - break - } + requestedMode, has := COMMANDS[verb] + if !has { + fail("Unknown git command", "Unknown git command %s", verb) + } - has, err := models.HasAccess(user, repo, models.ACCESS_MODE_READ) - if err != nil { - println("Gogs: internal error:", err.Error()) - log.GitLogger.Fatal(2, "Fail to check read access:", err) - } else if !has { - println("You have no right to access this repository") - log.GitLogger.Fatal(2, "User %s has no right to read repository %s", user.Name, repoPath) + mode, err := models.AccessLevel(user, repo) + if err != nil { + fail("Internal error", "HasAccess fail: %v", err) + } else if mode < requestedMode { + clientMessage := ACCESS_DENIED_MESSAGE + if mode >= models.ACCESS_MODE_READ { + clientMessage = "You do not have sufficient authorization for this action" } - default: - println("Unknown command: " + cmd) - return + fail(clientMessage, + "User %s does not have level %v access to repository %s", + user.Name, requestedMode, repoPath) } uuid := uuid.NewV4().String() @@ -197,11 +172,10 @@ func runServ(c *cli.Context) { gitcmd.Stdin = os.Stdin gitcmd.Stderr = os.Stderr if err = gitcmd.Run(); err != nil { - println("Gogs: internal error:", err.Error()) - log.GitLogger.Fatal(2, "Fail to execute git command: %v", err) + fail("Internal error", "Fail to execute git command: %v", err) } - if isWrite { + if requestedMode == models.ACCESS_MODE_WRITE { tasks, err := models.GetUpdateTasksByUuid(uuid) if err != nil { log.GitLogger.Fatal(2, "GetUpdateTasksByUuid: %v", err) @@ -223,10 +197,10 @@ func runServ(c *cli.Context) { // Update key activity. key, err := models.GetPublicKeyById(keyId) if err != nil { - log.GitLogger.Fatal(2, "GetPublicKeyById: %v", err) + fail("Internal error", "GetPublicKeyById: %v", err) } key.Updated = time.Now() if err = models.UpdatePublicKey(key); err != nil { - log.GitLogger.Fatal(2, "UpdatePublicKey: %v", err) + fail("Internal error", "UpdatePublicKey: %v", err) } } diff --git a/models/user.go b/models/user.go index 37e77dd3..3c439fff 100644 --- a/models/user.go +++ b/models/user.go @@ -40,7 +40,7 @@ var ( ErrUserHasOrgs = errors.New("User still have membership of organization") ErrUserAlreadyExist = errors.New("User already exist") ErrUserNotExist = errors.New("User does not exist") - ErrUserNotKeyOwner = errors.New("User does not the owner of public key") + ErrPublicKeyNotExist = errors.New("Public key does not exist") ErrEmailAlreadyUsed = errors.New("E-mail already used") ErrEmailNotExist = errors.New("E-mail does not exist") ErrEmailNotActivated = errors.New("E-mail address has not been activated") @@ -516,7 +516,7 @@ func GetUserByKeyId(keyId int64) (*User, error) { if err != nil { return nil, err } else if !has { - return nil, ErrUserNotKeyOwner + return nil, ErrPublicKeyNotExist } return user, nil }