Golang uuid.NewV4函数代码示例

// Query if name/passwd can login against the LDAP directory pool
// Create a local user if success
// Return the same LoginUserPlain semantic
// FIXME: https://github.com/gogits/gogs/issues/672
func LoginUserLdapSource(u *User, name, passwd string, sourceId int64, cfg *LDAPConfig, autoRegister bool) (*User, error) {
	name, fn, sn, mail, logged := cfg.Ldapsource.SearchEntry(name, passwd)
	if !logged {
		// User not in LDAP, do nothing
		return nil, ErrUserNotExist
	}
	if !autoRegister {
		return u, nil
	}

	// Fallback.
	if len(mail) == 0 {
		mail = uuid.NewV4().String() + "@localhost"
	}

	u = &User{
		LowerName:   strings.ToLower(name),
		Name:        name,
		FullName:    fn + " " + sn,
		LoginType:   LDAP,
		LoginSource: sourceId,
		LoginName:   name,
		Passwd:      passwd,
		Email:       mail,
		IsActive:    true,
	}
	return u, CreateUser(u)
}

// NewAttachment creates a new attachment object.
func NewAttachment(name string, buf []byte, file multipart.File) (_ *Attachment, err error) {
	attach := &Attachment{
		UUID: gouuid.NewV4().String(),
		Name: name,
	}

	if err = os.MkdirAll(path.Dir(attach.LocalPath()), os.ModePerm); err != nil {
		return nil, fmt.Errorf("MkdirAll: %v", err)
	}

	fw, err := os.Create(attach.LocalPath())
	if err != nil {
		return nil, fmt.Errorf("Create: %v", err)
	}
	defer fw.Close()

	if _, err = fw.Write(buf); err != nil {
		return nil, fmt.Errorf("Write: %v", err)
	} else if _, err = io.Copy(fw, file); err != nil {
		return nil, fmt.Errorf("Copy: %v", err)
	}

	sess := x.NewSession()
	defer sessionRelease(sess)
	if err := sess.Begin(); err != nil {
		return nil, err
	}

	if _, err := sess.Insert(attach); err != nil {
		return nil, err
	}

	return attach, sess.Commit()
}

// CreateHookTask creates a new hook task,
// it handles conversion from Payload to PayloadContent.
func CreateHookTask(t *HookTask) error {
	data, err := t.BasePayload.GetJSONPayload()
	if err != nil {
		return err
	}
	t.Uuid = uuid.NewV4().String()
	t.PayloadContent = string(data)
	_, err = x.Insert(t)
	return err
}

// CreateHookTask creates a new hook task,
// it handles conversion from Payload to PayloadContent.
func CreateHookTask(t *HookTask) error {
	data, err := json.Marshal(t.Payload)
	if err != nil {
		return err
	}
	t.Uuid = uuid.NewV4().String()
	t.PayloadContent = string(data)
	_, err = x.Insert(t)
	return err
}

func attachmentRefactor(x *xorm.Engine) error {
	type Attachment struct {
		ID   int64  `xorm:"pk autoincr"`
		UUID string `xorm:"uuid INDEX"`

		// For rename purpose.
		Path    string `xorm:"-"`
		NewPath string `xorm:"-"`
	}

	results, err := x.Query("SELECT * FROM `attachment`")
	if err != nil {
		return fmt.Errorf("select attachments: %v", err)
	}

	attachments := make([]*Attachment, 0, len(results))
	for _, attach := range results {
		if !com.IsExist(string(attach["path"])) {
			// If the attachment is already missing, there is no point to update it.
			continue
		}
		attachments = append(attachments, &Attachment{
			ID:   com.StrTo(attach["id"]).MustInt64(),
			UUID: gouuid.NewV4().String(),
			Path: string(attach["path"]),
		})
	}

	sess := x.NewSession()
	defer sessionRelease(sess)
	if err = sess.Begin(); err != nil {
		return err
	}

	if err = sess.Sync2(new(Attachment)); err != nil {
		return fmt.Errorf("Sync2: %v", err)
	}

	// Note: Roll back for rename can be a dead loop,
	// 	so produces a backup file.
	var buf bytes.Buffer
	buf.WriteString("# old path -> new path\n")

	// Update database first because this is where error happens the most often.
	for _, attach := range attachments {
		if _, err = sess.Id(attach.ID).Update(attach); err != nil {
			return err
		}

		attach.NewPath = path.Join(setting.AttachmentPath, attach.UUID[0:1], attach.UUID[1:2], attach.UUID)
		buf.WriteString(attach.Path)
		buf.WriteString("\t")
		buf.WriteString(attach.NewPath)
		buf.WriteString("\n")
	}

	// Then rename attachments.
	isSucceed := true
	defer func() {
		if isSucceed {
			return
		}

		dumpPath := path.Join(setting.LogRootPath, "attachment_path.dump")
		ioutil.WriteFile(dumpPath, buf.Bytes(), 0666)
		fmt.Println("Fail to rename some attachments, old and new paths are saved into:", dumpPath)
	}()
	for _, attach := range attachments {
		if err = os.MkdirAll(path.Dir(attach.NewPath), os.ModePerm); err != nil {
			isSucceed = false
			return err
		}

		if err = os.Rename(attach.Path, attach.NewPath); err != nil {
			isSucceed = false
			return err
		}
	}

	return sess.Commit()
}

//.........这里部分代码省略.........
	}

	// Allow anonymous clone for public repositories.
	var (
		keyID int64
		user  *models.User
	)
	if requestedMode == models.ACCESS_MODE_WRITE || repo.IsPrivate {
		keys := strings.Split(c.Args()[0], "-")
		if len(keys) != 2 {
			fail("Key ID format error", "Invalid key argument: %s", c.Args()[0])
		}

		key, err := models.GetPublicKeyByID(com.StrTo(keys[1]).MustInt64())
		if err != nil {
			fail("Invalid key ID", "Invalid key ID[%s]: %v", c.Args()[0], err)
		}
		keyID = key.ID

		// Check deploy key or user key.
		if key.Type == models.KEY_TYPE_DEPLOY {
			if key.Mode < requestedMode {
				fail("Key permission denied", "Cannot push with deployment key: %d", key.ID)
			}
			// Check if this deploy key belongs to current repository.
			if !models.HasDeployKey(key.ID, repo.ID) {
				fail("Key access denied", "Deploy key access denied: [key_id: %d, repo_id: %d]", key.ID, repo.ID)
			}

			// Update deploy key activity.
			deployKey, err := models.GetDeployKeyByRepo(key.ID, repo.ID)
			if err != nil {
				fail("Internal error", "GetDeployKey: %v", err)
			}

			deployKey.Updated = time.Now()
			if err = models.UpdateDeployKey(deployKey); err != nil {
				fail("Internal error", "UpdateDeployKey: %v", err)
			}
		} else {
			user, err = models.GetUserByKeyID(key.ID)
			if err != nil {
				fail("internal error", "Failed to get user by key ID(%d): %v", keyID, err)
			}

			mode, err := models.AccessLevel(user, repo)
			if err != nil {
				fail("Internal error", "Fail to check access: %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"
				}
				fail(clientMessage,
					"User %s does not have level %v access to repository %s",
					user.Name, requestedMode, repoPath)
			}
		}
	}

	uuid := uuid.NewV4().String()
	os.Setenv("uuid", uuid)

	// Special handle for Windows.
	if setting.IsWindows {
		verb = strings.Replace(verb, "-", " ", 1)
	}

	var gitcmd *exec.Cmd
	verbs := strings.Split(verb, " ")
	if len(verbs) == 2 {
		gitcmd = exec.Command(verbs[0], verbs[1], repoPath)
	} else {
		gitcmd = exec.Command(verb, repoPath)
	}
	gitcmd.Dir = setting.RepoRootPath
	gitcmd.Stdout = os.Stdout
	gitcmd.Stdin = os.Stdin
	gitcmd.Stderr = os.Stderr
	if err = gitcmd.Run(); err != nil {
		fail("Internal error", "Failed to execute git command: %v", err)
	}

	if requestedMode == models.ACCESS_MODE_WRITE {
		handleUpdateTask(uuid, user, repoUser, reponame, isWiki)
	}

	// Update user key activity.
	if keyID > 0 {
		key, err := models.GetPublicKeyByID(keyID)
		if err != nil {
			fail("Internal error", "GetPublicKeyById: %v", err)
		}

		key.Updated = time.Now()
		if err = models.UpdatePublicKey(key); err != nil {
			fail("Internal error", "UpdatePublicKey: %v", err)
		}
	}
}

// NewAccessToken creates new access token.
func NewAccessToken(t *AccessToken) error {
	t.Sha1 = base.EncodeSha1(uuid.NewV4().String())
	_, err := x.Insert(t)
	return err
}

func runServ(c *cli.Context) {
	if c.IsSet("config") {
		setting.CustomConf = c.String("config")
	}
	setup("serv.log")

	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 {
		fail("key-id format error", "Invalid key id: %s", c.Args()[0])
	}

	keyId, err := com.StrTo(keys[1]).Int64()
	if err != nil {
		fail("key-id format error", "Invalid key id: %s", err)
	}

	user, err := models.GetUserByKeyId(keyId)
	if err != nil {
		fail("internal error", "Fail to get user by key ID(%d): %v", keyId, err)
	}

	cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
	if cmd == "" {
		fmt.Printf("Hi, %s! You've successfully authenticated, but Gogs does not provide shell access.\n", user.Name)
		if user.IsAdmin {
			println("If this is unexpected, please log in with password and setup Gogs under another user.")
		}
		return
	}

	verb, args := parseCmd(cmd)
	repoPath := strings.Trim(args, "'")
	rr := strings.SplitN(repoPath, "/", 2)
	if len(rr) != 2 {
		fail("Invalid repository path", "Invalide repository path: %v", args)
	}
	repoUserName := rr[0]
	repoName := strings.TrimSuffix(rr[1], ".git")

	repoUser, err := models.GetUserByName(repoUserName)
	if err != nil {
		if err == models.ErrUserNotExist {
			fail("Repository owner does not exist", "Unregistered owner: %s", repoUserName)
		}
		fail("Internal error", "Fail to get repository owner(%s): %v", repoUserName, err)
	}

	repo, err := models.GetRepositoryByName(repoUser.Id, repoName)
	if err != nil {
		if models.IsErrRepoNotExist(err) {
			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)
			}
		}
		fail("Internal error", "Fail to get repository: %v", err)
	}

	requestedMode, has := COMMANDS[verb]
	if !has {
		fail("Unknown git command", "Unknown git command %s", verb)
	}

	mode, err := models.AccessLevel(user, repo)
	if err != nil {
		fail("Internal error", "Fail to check access: %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"
		}
		fail(clientMessage,
			"User %s does not have level %v access to repository %s",
			user.Name, requestedMode, repoPath)
	}

	uuid := uuid.NewV4().String()
	os.Setenv("uuid", uuid)

	var gitcmd *exec.Cmd
	verbs := strings.Split(verb, " ")
	if len(verbs) == 2 {
		gitcmd = exec.Command(verbs[0], verbs[1], repoPath)
	} else {
		gitcmd = exec.Command(verb, repoPath)
	}
	gitcmd.Dir = setting.RepoRootPath
	gitcmd.Stdout = os.Stdout
	gitcmd.Stdin = os.Stdin
	gitcmd.Stderr = os.Stderr
//.........这里部分代码省略.........

func runServ(k *cli.Context) {
	setup("serv.log")

	keys := strings.Split(os.Args[2], "-")
	if len(keys) != 2 {
		println("Gogs: auth file format error")
		log.GitLogger.Fatal(2, "Invalid auth file format: %s", os.Args[2])
	}

	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)
	}
	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)
		log.GitLogger.Fatal(2, "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.")
		return
	}

	verb, args := parseCmd(cmd)
	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)
	}
	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)
		}
		println("Gogs: internal error:", err)
		log.GitLogger.Fatal(2, "Fail to get repository owner(%s): %v", repoUserName, err)
	}

	// Access check.
	switch {
	case isWrite:
		has, err := models.HasAccess(user.Name, path.Join(repoUserName, repoName), models.WRITABLE)
		if err != nil {
			println("Gogs: internal error:", err)
			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:
		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)
			}
			println("Gogs: internal error:", err)
			log.GitLogger.Fatal(2, "Fail to get repository: %v", err)
		}

		if !repo.IsPrivate {
			break
		}

		has, err := models.HasAccess(user.Name, path.Join(repoUserName, repoName), models.READABLE)
		if err != nil {
			println("Gogs: internal error:", err)
			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)
		}
	default:
		println("Unknown command")
		return
	}

	uuid := uuid.NewV4().String()
	os.Setenv("uuid", uuid)

	gitcmd := exec.Command(verb, repoPath)
	gitcmd.Dir = setting.RepoRootPath
	gitcmd.Stdout = os.Stdout
	gitcmd.Stdin = os.Stdin
	gitcmd.Stderr = os.Stderr
//.........这里部分代码省略.........

// SignedInUser returns the user object of signed user.
// It returns a bool value to indicate whether user uses basic auth or not.
func SignedInUser(ctx *macaron.Context, sess session.Store) (*models.User, bool) {
	if !models.HasEngine {
		return nil, false
	}

	uid := SignedInID(ctx, sess)

	if uid <= 0 {
		if setting.Service.EnableReverseProxyAuth {
			webAuthUser := ctx.Req.Header.Get(setting.ReverseProxyAuthUser)
			if len(webAuthUser) > 0 {
				u, err := models.GetUserByName(webAuthUser)
				if err != nil {
					if !models.IsErrUserNotExist(err) {
						log.Error(4, "GetUserByName: %v", err)
						return nil, false
					}

					// Check if enabled auto-registration.
					if setting.Service.EnableReverseProxyAutoRegister {
						u := &models.User{
							Name:     webAuthUser,
							Email:    uuid.NewV4().String() + "@localhost",
							Passwd:   webAuthUser,
							IsActive: true,
						}
						if err = models.CreateUser(u); err != nil {
							// FIXME: should I create a system notice?
							log.Error(4, "CreateUser: %v", err)
							return nil, false
						} else {
							return u, false
						}
					}
				}
				return u, false
			}
		}

		// Check with basic auth.
		baHead := ctx.Req.Header.Get("Authorization")
		if len(baHead) > 0 {
			auths := strings.Fields(baHead)
			if len(auths) == 2 && auths[0] == "Basic" {
				uname, passwd, _ := base.BasicAuthDecode(auths[1])

				u, err := models.UserSignIn(uname, passwd)
				if err != nil {
					if !models.IsErrUserNotExist(err) {
						log.Error(4, "UserSignIn: %v", err)
					}
					return nil, false
				}

				return u, true
			}
		}
		return nil, false
	}

	u, err := models.GetUserByID(uid)
	if err != nil {
		log.Error(4, "GetUserById: %v", err)
		return nil, false
	}
	return u, false
}

//.........这里部分代码省略.........
		}
		keyID = key.ID

		// Check deploy key or user key.
		if key.Type == models.KEY_TYPE_DEPLOY {
			if key.Mode < requestedMode {
				fail("Key permission denied", "Cannot push with deployment key: %d", key.ID)
			}
			// Check if this deploy key belongs to current repository.
			if !models.HasDeployKey(key.ID, repo.ID) {
				fail("Key access denied", "Key access denied: %d-%d", key.ID, repo.ID)
			}

			// Update deploy key activity.
			deployKey, err := models.GetDeployKeyByRepo(key.ID, repo.ID)
			if err != nil {
				fail("Internal error", "GetDeployKey: %v", err)
			}

			deployKey.Updated = time.Now()
			if err = models.UpdateDeployKey(deployKey); err != nil {
				fail("Internal error", "UpdateDeployKey: %v", err)
			}
		} else {
			user, err = models.GetUserByKeyId(key.ID)
			if err != nil {
				fail("internal error", "Failed to get user by key ID(%d): %v", keyID, err)
			}

			mode, err := models.AccessLevel(user, repo)
			if err != nil {
				fail("Internal error", "Fail to check access: %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"
				}
				fail(clientMessage,
					"User %s does not have level %v access to repository %s",
					user.Name, requestedMode, repoPath)
			}
		}
	}

	uuid := uuid.NewV4().String()
	os.Setenv("uuid", uuid)

	var gitcmd *exec.Cmd
	verbs := strings.Split(verb, " ")
	if len(verbs) == 2 {
		gitcmd = exec.Command(verbs[0], verbs[1], repoPath)
	} else {
		gitcmd = exec.Command(verb, repoPath)
	}
	gitcmd.Dir = setting.RepoRootPath
	gitcmd.Stdout = os.Stdout
	gitcmd.Stdin = os.Stdin
	gitcmd.Stderr = os.Stderr
	if err = gitcmd.Run(); err != nil {
		fail("Internal error", "Failed to execute git command: %v", err)
	}

	if requestedMode == models.ACCESS_MODE_WRITE {
		tasks, err := models.GetUpdateTasksByUuid(uuid)
		if err != nil {
			log.GitLogger.Fatal(2, "GetUpdateTasksByUuid: %v", err)
		}

		for _, task := range tasks {
			err = models.Update(task.RefName, task.OldCommitId, task.NewCommitId,
				user.Name, repoUserName, repoName, user.Id)
			if err != nil {
				log.GitLogger.Error(2, "Failed to update: %v", err)
			}
		}

		if err = models.DelUpdateTasksByUuid(uuid); err != nil {
			log.GitLogger.Fatal(2, "DelUpdateTasksByUuid: %v", err)
		}
	}

	// Send deliver hook request.
	resp, err := httplib.Head(setting.AppUrl + setting.AppSubUrl + repoUserName + "/" + repoName + "/hooks/trigger").Response()
	if err == nil {
		resp.Body.Close()
	}

	// Update user key activity.
	if keyID > 0 {
		key, err := models.GetPublicKeyByID(keyID)
		if err != nil {
			fail("Internal error", "GetPublicKeyById: %v", err)
		}

		key.Updated = time.Now()
		if err = models.UpdatePublicKey(key); err != nil {
			fail("Internal error", "UpdatePublicKey: %v", err)
		}
	}
}