Golang process.Exec函數代碼示例

func NewRepoContext() {
	zip.Verbose = false

	// Check if server has basic git setting.
	stdout, stderr, err := process.Exec("NewRepoContext(get setting)", "git", "config", "--get", "user.name")
	if strings.Contains(stderr, "fatal:") {
		log.Fatal("repo.NewRepoContext(fail to get git user.name): %s", stderr)
	} else if err != nil || len(strings.TrimSpace(stdout)) == 0 {
		if _, stderr, err = process.Exec("NewRepoContext(set email)", "git", "config", "--global", "user.email", "[email protected]"); err != nil {
			log.Fatal("repo.NewRepoContext(fail to set git user.email): %s", stderr)
		} else if _, stderr, err = process.Exec("NewRepoContext(set name)", "git", "config", "--global", "user.name", "Gogs"); err != nil {
			log.Fatal("repo.NewRepoContext(fail to set git user.name): %s", stderr)
		}
	}

	barePath := path.Join(setting.RepoRootPath, "git-bare.zip")
	if !com.IsExist(barePath) {
		data, err := bin.Asset("conf/content/git-bare.zip")
		if err != nil {
			log.Fatal("Fail to get asset 'git-bare.zip': %v", err)
		} else if err := ioutil.WriteFile(barePath, data, os.ModePerm); err != nil {
			log.Fatal("Fail to write asset 'git-bare.zip': %v", err)
		}
	}
}

func addKey(e Engine, key *PublicKey) (err error) {
	// Calculate fingerprint.
	tmpPath := strings.Replace(path.Join(os.TempDir(), fmt.Sprintf("%d", time.Now().Nanosecond()),
		"id_rsa.pub"), "\\", "/", -1)
	os.MkdirAll(path.Dir(tmpPath), os.ModePerm)
	if err = ioutil.WriteFile(tmpPath, []byte(key.Content), 0644); err != nil {
		return err
	}
	stdout, stderr, err := process.Exec("AddPublicKey", "ssh-keygen", "-lf", tmpPath)
	if err != nil {
		return errors.New("ssh-keygen -lf: " + stderr)
	} else if len(stdout) < 2 {
		return errors.New("not enough output for calculating fingerprint: " + stdout)
	}
	key.Fingerprint = strings.Split(stdout, " ")[1]

	// Save SSH key.
	if _, err = e.Insert(key); err != nil {
		return err
	}

	// Don't need to rewrite this file if builtin SSH server is enabled.
	if setting.StartSSHServer {
		return nil
	}
	return saveAuthorizedKeyFile(key)
}

// SSHKeyGenParsePublicKey extracts key type and length using ssh-keygen.
func SSHKeyGenParsePublicKey(key string) (string, int, error) {
	// The ssh-keygen in Windows does not print key type, so no need go further.
	if setting.IsWindows {
		return "", 0, nil
	}

	tmpName, err := writeTmpKeyFile(key)
	if err != nil {
		return "", 0, fmt.Errorf("writeTmpKeyFile: %v", err)
	}
	defer os.Remove(tmpName)

	stdout, stderr, err := process.Exec("SSHKeyGenParsePublicKey", setting.SSH.KeygenPath, "-lf", tmpName)
	if err != nil {
		return "", 0, fmt.Errorf("Fail to parse public key: %s - %s", err, stderr)
	}
	if strings.Contains(stdout, "is not a public key file") {
		return "", 0, ErrKeyUnableVerify{stdout}
	}

	fields := strings.Split(stdout, " ")
	if len(fields) < 4 {
		return "", 0, fmt.Errorf("Invalid public key line: %s", stdout)
	}

	keyType := strings.Trim(fields[len(fields)-1], "()\r\n")
	return strings.ToLower(keyType), com.StrTo(fields[0]).MustInt(), nil
}

func NewRepoContext() {
	zip.Verbose = false

	// Check Git installation.
	if _, err := exec.LookPath("git"); err != nil {
		log.Fatal(4, "Fail to test 'git' command: %v (forgotten install?)", err)
	}

	// Check Git version.
	ver, err := git.GetVersion()
	if err != nil {
		log.Fatal(4, "Fail to get Git version: %v", err)
	}

	reqVer, err := git.ParseVersion("1.7.1")
	if err != nil {
		log.Fatal(4, "Fail to parse required Git version: %v", err)
	}
	if ver.LessThan(reqVer) {
		log.Fatal(4, "Gogs requires Git version greater or equal to 1.7.1")
	}

	// Check if server has basic git setting and set if not.
	if stdout, stderr, err := process.Exec("NewRepoContext(get setting)", "git", "config", "--get", "user.name"); err != nil || strings.TrimSpace(stdout) == "" {
		// ExitError indicates user.name is not set
		if _, ok := err.(*exec.ExitError); ok || strings.TrimSpace(stdout) == "" {
			stndrdUserName := "Gogs"
			stndrdUserEmail := "[email protected]"
			if _, stderr, gerr := process.Exec("NewRepoContext(set name)", "git", "config", "--global", "user.name", stndrdUserName); gerr != nil {
				log.Fatal(4, "Fail to set git user.name(%s): %s", gerr, stderr)
			}
			if _, stderr, gerr := process.Exec("NewRepoContext(set email)", "git", "config", "--global", "user.email", stndrdUserEmail); gerr != nil {
				log.Fatal(4, "Fail to set git user.email(%s): %s", gerr, stderr)
			}
			log.Info("Git user.name and user.email set to %s <%s>", stndrdUserName, stndrdUserEmail)
		} else {
			log.Fatal(4, "Fail to get git user.name(%s): %s", err, stderr)
		}
	}

	// Set git some configurations.
	if _, stderr, err := process.Exec("NewRepoContext(git config --global core.quotepath false)",
		"git", "config", "--global", "core.quotepath", "false"); err != nil {
		log.Fatal(4, "Fail to execute 'git config --global core.quotepath false': %s", stderr)
	}

}

func NewRepoContext() {
	zip.Verbose = false

	// Check Git installation.
	if _, err := exec.LookPath("git"); err != nil {
		log.Fatal(4, "Fail to test 'git' command: %v (forgotten install?)", err)
	}

	// Check Git version.
	ver, err := git.GetVersion()
	if err != nil {
		log.Fatal(4, "Fail to get Git version: %v", err)
	}

	reqVer, err := git.ParseVersion("1.7.1")
	if err != nil {
		log.Fatal(4, "Fail to parse required Git version: %v", err)
	}
	if ver.LessThan(reqVer) {
		log.Fatal(4, "Gogs requires Git version greater or equal to 1.7.1")
	}

	// Git requires setting user.name and user.email in order to commit changes.
	for configKey, defaultValue := range map[string]string{"user.name": "Gogs", "user.email": "[email protected]"} {
		if stdout, stderr, err := process.Exec("NewRepoContext(get setting)", "git", "config", "--get", configKey); err != nil || strings.TrimSpace(stdout) == "" {
			// ExitError indicates this config is not set
			if _, ok := err.(*exec.ExitError); ok || strings.TrimSpace(stdout) == "" {
				if _, stderr, gerr := process.Exec("NewRepoContext(set "+configKey+")", "git", "config", "--global", configKey, defaultValue); gerr != nil {
					log.Fatal(4, "Fail to set git %s(%s): %s", configKey, gerr, stderr)
				}
				log.Info("Git config %s set to %s", configKey, defaultValue)
			} else {
				log.Fatal(4, "Fail to get git %s(%s): %s", configKey, err, stderr)
			}
		}
	}

	// Set git some configurations.
	if _, stderr, err := process.Exec("NewRepoContext(git config --global core.quotepath false)",
		"git", "config", "--global", "core.quotepath", "false"); err != nil {
		log.Fatal(4, "Fail to execute 'git config --global core.quotepath false': %s", stderr)
	}

}

// CheckPublicKeyString checks if the given public key string is recognized by SSH.
func CheckPublicKeyString(content string) (_ string, err error) {
	content, err = parseKeyString(content)
	if err != nil {
		return "", err
	}

	content = strings.TrimRight(content, "\n\r")
	if strings.ContainsAny(content, "\n\r") {
		return "", errors.New("only a single line with a single key please")
	}

	// write the key to a file…
	tmpFile, err := ioutil.TempFile(os.TempDir(), "keytest")
	if err != nil {
		return "", err
	}
	tmpPath := tmpFile.Name()
	defer os.Remove(tmpPath)
	tmpFile.WriteString(content)
	tmpFile.Close()

	// Check if ssh-keygen recognizes its contents.
	stdout, stderr, err := process.Exec("CheckPublicKeyString", "ssh-keygen", "-lf", tmpPath)
	if err != nil {
		return "", errors.New("ssh-keygen -lf: " + stderr)
	} else if len(stdout) < 2 {
		return "", errors.New("ssh-keygen returned not enough output to evaluate the key: " + stdout)
	}

	// The ssh-keygen in Windows does not print key type, so no need go further.
	if setting.IsWindows {
		return content, nil
	}

	sshKeygenOutput := strings.Split(stdout, " ")
	if len(sshKeygenOutput) < 4 {
		return content, ErrKeyUnableVerify{stdout}
	}

	// Check if key type and key size match.
	if !setting.Service.DisableMinimumKeySizeCheck {
		keySize := com.StrTo(sshKeygenOutput[0]).MustInt()
		if keySize == 0 {
			return "", errors.New("cannot get key size of the given key")
		}

		keyType := strings.Trim(sshKeygenOutput[len(sshKeygenOutput)-1], " ()\n")
		if minimumKeySize := setting.Service.MinimumKeySizes[keyType]; minimumKeySize == 0 {
			return "", fmt.Errorf("unrecognized public key type: %s", keyType)
		} else if keySize < minimumKeySize {
			return "", fmt.Errorf("the minimum accepted size of a public key %s is %d", keyType, minimumKeySize)
		}
	}

	return content, nil
}

func NewRepoContext() {
	zip.Verbose = false

	// Check Git installation.
	if _, err := exec.LookPath("git"); err != nil {
		log.Fatal(4, "Fail to test 'git' command: %v (forgotten install?)", err)
	}

	// Check Git version.
	ver, err := git.GetVersion()
	if err != nil {
		log.Fatal(4, "Fail to get Git version: %v", err)
	}
	if ver.Major < 2 && ver.Minor < 8 {
		log.Fatal(4, "Gogs requires Git version greater or equal to 1.8.0")
	}

	// Check if server has basic git setting.
	stdout, stderr, err := process.Exec("NewRepoContext(get setting)", "git", "config", "--get", "user.name")
	if err != nil {
		log.Fatal(4, "Fail to get git user.name: %s", stderr)
	} else if err != nil || len(strings.TrimSpace(stdout)) == 0 {
		if _, stderr, err = process.Exec("NewRepoContext(set email)", "git", "config", "--global", "user.email", "[email protected]"); err != nil {
			log.Fatal(4, "Fail to set git user.email: %s", stderr)
		} else if _, stderr, err = process.Exec("NewRepoContext(set name)", "git", "config", "--global", "user.name", "Gogs"); err != nil {
			log.Fatal(4, "Fail to set git user.name: %s", stderr)
		}
	}

	// Set git some configurations.
	if _, stderr, err = process.Exec("NewRepoContext(git config --global core.quotepath false)",
		"git", "config", "--global", "core.quotepath", "false"); err != nil {
		log.Fatal(4, "Fail to execute 'git config --global core.quotepath false': %s", stderr)
	}

}

// MigrateRepository migrates a existing repository from other project hosting.
func MigrateRepository(u *User, name, desc string, private, mirror bool, url string) (*Repository, error) {
	repo, err := CreateRepository(u, name, desc, "", "", private, mirror, false)
	if err != nil {
		return nil, err
	}

	// Clone to temprory path and do the init commit.
	tmpDir := filepath.Join(os.TempDir(), fmt.Sprintf("%d", time.Now().Nanosecond()))
	os.MkdirAll(tmpDir, os.ModePerm)

	repoPath := RepoPath(u.Name, name)

	repo.IsBare = false
	if mirror {
		if err = MirrorRepository(repo.Id, u.Name, repo.Name, repoPath, url); err != nil {
			return repo, err
		}
		repo.IsMirror = true
		return repo, UpdateRepository(repo)
	}

	// TODO: need timeout.
	// Clone from local repository.
	_, stderr, err := process.Exec(
		fmt.Sprintf("MigrateRepository(git clone): %s", repoPath),
		"git", "clone", repoPath, tmpDir)
	if err != nil {
		return repo, errors.New("git clone: " + stderr)
	}

	// TODO: need timeout.
	// Pull data from source.
	if _, stderr, err = process.ExecDir(
		tmpDir, fmt.Sprintf("MigrateRepository(git pull): %s", repoPath),
		"git", "pull", url); err != nil {
		return repo, errors.New("git pull: " + stderr)
	}

	// TODO: need timeout.
	// Push data to local repository.
	if _, stderr, err = process.ExecDir(
		tmpDir, fmt.Sprintf("MigrateRepository(git push): %s", repoPath),
		"git", "push", "origin", "master"); err != nil {
		return repo, errors.New("git push: " + stderr)
	}

	return repo, UpdateRepository(repo)
}

// CheckPublicKeyString checks if the given public key string is recognized by SSH.
func CheckPublicKeyString(content string) (bool, error) {
	if strings.ContainsAny(content, "\n\r") {
		return false, errors.New("only a single line with a single key please")
	}

	// write the key to a file…
	tmpFile, err := ioutil.TempFile(os.TempDir(), "keytest")
	if err != nil {
		return false, err
	}
	tmpPath := tmpFile.Name()
	defer os.Remove(tmpPath)
	tmpFile.WriteString(content)
	tmpFile.Close()

	// Check if ssh-keygen recognizes its contents.
	stdout, stderr, err := process.Exec("CheckPublicKeyString", "ssh-keygen", "-l", "-f", tmpPath)
	if err != nil {
		return false, errors.New("ssh-keygen -l -f: " + stderr)
	} else if len(stdout) < 2 {
		return false, errors.New("ssh-keygen returned not enough output to evaluate the key: " + stdout)
	}

	// The ssh-keygen in Windows does not print key type, so no need go further.
	if setting.IsWindows {
		return true, nil
	}

	fmt.Println(stdout)
	sshKeygenOutput := strings.Split(stdout, " ")
	if len(sshKeygenOutput) < 4 {
		return false, ErrKeyUnableVerify
	}

	// Check if key type and key size match.
	keySize := com.StrTo(sshKeygenOutput[0]).MustInt()
	if keySize == 0 {
		return false, errors.New("cannot get key size of the given key")
	}
	keyType := strings.TrimSpace(sshKeygenOutput[len(sshKeygenOutput)-1])
	if minimumKeySize := MinimumKeySize[keyType]; minimumKeySize == 0 {
		return false, errors.New("sorry, unrecognized public key type")
	} else if keySize < minimumKeySize {
		return false, fmt.Errorf("the minimum accepted size of a public key %s is %d", keyType, minimumKeySize)
	}

	return true, nil
}

// MirrorRepository creates a mirror repository from source.
func MirrorRepository(repoId int64, userName, repoName, repoPath, url string) error {
	// TODO: need timeout.
	_, stderr, err := process.Exec(fmt.Sprintf("MirrorRepository: %s/%s", userName, repoName),
		"git", "clone", "--mirror", url, repoPath)
	if err != nil {
		return errors.New("git clone --mirror: " + stderr)
	}

	if _, err = x.InsertOne(&Mirror{
		RepoId:     repoId,
		RepoName:   strings.ToLower(userName + "/" + repoName),
		Interval:   24,
		NextUpdate: time.Now().Add(24 * time.Hour),
	}); err != nil {
		return err
	}

	return git.UnpackRefs(repoPath)
}

// CheckPublicKeyString checks if the given public key string is recognized by SSH.
func CheckPublicKeyString(content string) (bool, error) {
	if strings.ContainsAny(content, "\n\r") {
		return false, errors.New("Only a single line with a single key please")
	}

	// write the key to a file…
	tmpFile, err := ioutil.TempFile(os.TempDir(), "keytest")
	if err != nil {
		return false, err
	}
	tmpPath := tmpFile.Name()
	defer os.Remove(tmpPath)
	tmpFile.WriteString(content)
	tmpFile.Close()

	// … see if ssh-keygen recognizes its contents
	stdout, stderr, err := process.Exec("CheckPublicKeyString", "ssh-keygen", "-l", "-f", tmpPath)
	if err != nil {
		return false, errors.New("ssh-keygen -l -f: " + stderr)
	} else if len(stdout) < 2 {
		return false, errors.New("ssh-keygen returned not enough output to evaluate the key")
	}
	sshKeygenOutput := strings.Split(stdout, " ")
	if len(sshKeygenOutput) < 4 {
		return false, errors.New("Not enough fields returned by ssh-keygen -l -f")
	}
	keySize, err := com.StrTo(sshKeygenOutput[0]).Int()
	if err != nil {
		return false, errors.New("Cannot get key size of the given key")
	}
	keyType := strings.TrimSpace(sshKeygenOutput[len(sshKeygenOutput)-1])

	if minimumKeySize := MinimumKeySize[keyType]; minimumKeySize == 0 {
		return false, errors.New("Sorry, unrecognized public key type")
	} else if keySize < minimumKeySize {
		return false, fmt.Errorf("The minimum accepted size of a public key %s is %d", keyType, minimumKeySize)
	}

	return true, nil
}

// AddPublicKey adds new public key to database and authorized_keys file.
func AddPublicKey(key *PublicKey) (err error) {
	has, err := x.Get(key)
	if err != nil {
		return err
	} else if has {
		return ErrKeyAlreadyExist
	}

	// Calculate fingerprint.
	tmpPath := strings.Replace(path.Join(os.TempDir(), fmt.Sprintf("%d", time.Now().Nanosecond()),
		"id_rsa.pub"), "\\", "/", -1)
	os.MkdirAll(path.Dir(tmpPath), os.ModePerm)
	if err = ioutil.WriteFile(tmpPath, []byte(key.Content), os.ModePerm); err != nil {
		return err
	}
	stdout, stderr, err := process.Exec("AddPublicKey", "ssh-keygen", "-l", "-f", tmpPath)
	if err != nil {
		return errors.New("ssh-keygen -l -f: " + stderr)
	} else if len(stdout) < 2 {
		return errors.New("not enough output for calculating fingerprint: " + stdout)
	}
	key.Fingerprint = strings.Split(stdout, " ")[1]
	if has, err := x.Get(&PublicKey{Fingerprint: key.Fingerprint}); err == nil && has {
		return ErrKeyAlreadyExist
	}

	// Save SSH key.
	if _, err = x.Insert(key); err != nil {
		return err
	} else if err = saveAuthorizedKeyFile(key); err != nil {
		// Roll back.
		if _, err2 := x.Delete(key); err2 != nil {
			return err2
		}
		return err
	}

	return nil
}

func prepareRepoCommit(repo *Repository, tmpDir, repoPath string, opts CreateRepoOptions) error {
	// Clone to temprory path and do the init commit.
	_, stderr, err := process.Exec(
		fmt.Sprintf("initRepository(git clone): %s", repoPath), "git", "clone", repoPath, tmpDir)
	if err != nil {
		return fmt.Errorf("git clone: %v - %s", err, stderr)
	}

	// README
	data, err := getRepoInitFile("readme", opts.Readme)
	if err != nil {
		return fmt.Errorf("getRepoInitFile[%s]: %v", opts.Readme, err)
	}

	cloneLink, err := repo.CloneLink()
	if err != nil {
		return fmt.Errorf("CloneLink: %v", err)
	}
	match := map[string]string{
		"Name":           repo.Name,
		"Description":    repo.Description,
		"CloneURL.SSH":   cloneLink.SSH,
		"CloneURL.HTTPS": cloneLink.HTTPS,
	}
	if err = ioutil.WriteFile(filepath.Join(tmpDir, "README.md"),
		[]byte(com.Expand(string(data), match)), 0644); err != nil {
		return fmt.Errorf("write README.md: %v", err)
	}

	// .gitignore
	if len(opts.Gitignores) > 0 {
		var buf bytes.Buffer
		names := strings.Split(opts.Gitignores, ",")
		for _, name := range names {
			data, err = getRepoInitFile("gitignore", name)
			if err != nil {
				return fmt.Errorf("getRepoInitFile[%s]: %v", name, err)
			}
			buf.WriteString("# ---> " + name + "\n")
			buf.Write(data)
			buf.WriteString("\n")
		}

		if buf.Len() > 0 {
			if err = ioutil.WriteFile(filepath.Join(tmpDir, ".gitignore"), buf.Bytes(), 0644); err != nil {
				return fmt.Errorf("write .gitignore: %v", err)
			}
		}
	}

	// LICENSE
	if len(opts.License) > 0 {
		data, err = getRepoInitFile("license", opts.License)
		if err != nil {
			return fmt.Errorf("getRepoInitFile[%s]: %v", opts.License, err)
		}

		if err = ioutil.WriteFile(filepath.Join(tmpDir, "LICENSE"), data, 0644); err != nil {
			return fmt.Errorf("write LICENSE: %v", err)
		}
	}

	return nil
}

// InitRepository initializes README and .gitignore if needed.
func initRepository(e Engine, repoPath string, u *User, repo *Repository, initReadme bool, repoLang, license string) error {
	// Somehow the directory could exist.
	if com.IsExist(repoPath) {
		return fmt.Errorf("initRepository: path already exists: %s", repoPath)
	}

	// Init bare new repository.
	os.MkdirAll(repoPath, os.ModePerm)
	_, stderr, err := process.ExecDir(-1, repoPath,
		fmt.Sprintf("initRepository(git init --bare): %s", repoPath),
		"git", "init", "--bare")
	if err != nil {
		return fmt.Errorf("git init --bare: %s", err)
	}

	if err := createUpdateHook(repoPath); err != nil {
		return err
	}

	// Initialize repository according to user's choice.
	fileName := map[string]string{}
	if initReadme {
		fileName["readme"] = "README.md"
	}
	if repoLang != "" {
		fileName["gitign"] = ".gitignore"
	}
	if license != "" {
		fileName["license"] = "LICENSE"
	}

	// Clone to temprory path and do the init commit.
	tmpDir := filepath.Join(os.TempDir(), com.ToStr(time.Now().Nanosecond()))
	os.MkdirAll(tmpDir, os.ModePerm)
	defer os.RemoveAll(tmpDir)

	_, stderr, err = process.Exec(
		fmt.Sprintf("initRepository(git clone): %s", repoPath),
		"git", "clone", repoPath, tmpDir)
	if err != nil {
		return errors.New("git clone: " + stderr)
	}

	// README
	if initReadme {
		defaultReadme := repo.Name + "\n" + strings.Repeat("=",
			utf8.RuneCountInString(repo.Name)) + "\n\n" + repo.Description
		if err := ioutil.WriteFile(filepath.Join(tmpDir, fileName["readme"]),
			[]byte(defaultReadme), 0644); err != nil {
			return err
		}
	}

	// FIXME: following two can be merged.

	// .gitignore
	// Copy custom file when available.
	customPath := path.Join(setting.CustomPath, "conf/gitignore", repoLang)
	targetPath := path.Join(tmpDir, fileName["gitign"])
	if com.IsFile(customPath) {
		if err := com.Copy(customPath, targetPath); err != nil {
			return fmt.Errorf("copy gitignore: %v", err)
		}
	} else if com.IsSliceContainsStr(Gitignores, repoLang) {
		if err = ioutil.WriteFile(targetPath,
			bindata.MustAsset(path.Join("conf/gitignore", repoLang)), 0644); err != nil {
			return fmt.Errorf("generate gitignore: %v", err)
		}
	} else {
		delete(fileName, "gitign")
	}

	// LICENSE
	customPath = path.Join(setting.CustomPath, "conf/license", license)
	targetPath = path.Join(tmpDir, fileName["license"])
	if com.IsFile(customPath) {
		if err = com.Copy(customPath, targetPath); err != nil {
			return fmt.Errorf("copy license: %v", err)
		}
	} else if com.IsSliceContainsStr(Licenses, license) {
		if err = ioutil.WriteFile(targetPath,
			bindata.MustAsset(path.Join("conf/license", license)), 0644); err != nil {
			return fmt.Errorf("generate license: %v", err)
		}
	} else {
		delete(fileName, "license")
	}

	if len(fileName) == 0 {
		// Re-fetch the repository from database before updating it (else it would
		// override changes that were done earlier with sql)
		if repo, err = getRepositoryById(e, repo.Id); err != nil {
			return err
		}
		repo.IsBare = true
		repo.DefaultBranch = "master"
		return updateRepository(e, repo, false)
	}

//.........這裏部分代碼省略.........

// InitRepository initializes README and .gitignore if needed.
func initRepository(f string, u *User, repo *Repository, initReadme bool, repoLang, license string) error {
	repoPath := RepoPath(u.Name, repo.Name)

	// Create bare new repository.
	if err := extractGitBareZip(repoPath); err != nil {
		return err
	}

	// hook/post-update
	if err := createHookUpdate(filepath.Join(repoPath, "hooks", "update"),
		fmt.Sprintf(TPL_UPDATE_HOOK, setting.ScriptType, "\""+appPath+"\"")); err != nil {
		return err
	}

	// Initialize repository according to user's choice.
	fileName := map[string]string{}
	if initReadme {
		fileName["readme"] = "README.md"
	}
	if repoLang != "" {
		fileName["gitign"] = ".gitignore"
	}
	if license != "" {
		fileName["license"] = "LICENSE"
	}

	// Clone to temprory path and do the init commit.
	tmpDir := filepath.Join(os.TempDir(), com.ToStr(time.Now().Nanosecond()))
	os.MkdirAll(tmpDir, os.ModePerm)

	_, stderr, err := process.Exec(
		fmt.Sprintf("initRepository(git clone): %s", repoPath),
		"git", "clone", repoPath, tmpDir)
	if err != nil {
		return errors.New("initRepository(git clone): " + stderr)
	}

	// README
	if initReadme {
		defaultReadme := repo.Name + "\n" + strings.Repeat("=",
			utf8.RuneCountInString(repo.Name)) + "\n\n" + repo.Description
		if err := ioutil.WriteFile(filepath.Join(tmpDir, fileName["readme"]),
			[]byte(defaultReadme), 0644); err != nil {
			return err
		}
	}

	// .gitignore
	filePath := "conf/gitignore/" + repoLang
	if com.IsFile(filePath) {
		targetPath := path.Join(tmpDir, fileName["gitign"])
		if com.IsFile(filePath) {
			if err = com.Copy(filePath, targetPath); err != nil {
				return err
			}
		} else {
			// Check custom files.
			filePath = path.Join(setting.CustomPath, "conf/gitignore", repoLang)
			if com.IsFile(filePath) {
				if err := com.Copy(filePath, targetPath); err != nil {
					return err
				}
			}
		}
	} else {
		delete(fileName, "gitign")
	}

	// LICENSE
	filePath = "conf/license/" + license
	if com.IsFile(filePath) {
		targetPath := path.Join(tmpDir, fileName["license"])
		if com.IsFile(filePath) {
			if err = com.Copy(filePath, targetPath); err != nil {
				return err
			}
		} else {
			// Check custom files.
			filePath = path.Join(setting.CustomPath, "conf/license", license)
			if com.IsFile(filePath) {
				if err := com.Copy(filePath, targetPath); err != nil {
					return err
				}
			}
		}
	} else {
		delete(fileName, "license")
	}

	if len(fileName) == 0 {
		repo.IsBare = true
		repo.DefaultBranch = "master"
		return UpdateRepository(repo)
	}

	// Apply changes and commit.
	return initRepoCommit(tmpDir, u.NewGitSig())
}