func main() {
syscall.Umask(0022) // set umask for pushes
clientId := common.Getenv("SSH_CLIENT", "local")
logfilePath := common.Getenv("LOGFILE", "/var/log/gitorious/gitorious-shell.log")
internalApiUrl := common.Getenv("GITORIOUS_INTERNAL_API_URL", "http://localhost:3000/api/internal")
logger := getLogger(logfilePath, clientId)
internalApi := &api.GitoriousInternalApi{internalApiUrl}
logger.Printf("client connected")
if len(os.Args) < 2 {
say("Error occured, please contact support")
logger.Printf("username argument missing, check .authorized_keys file")
os.Exit(1)
}
username := os.Args[1]
logger.Printf("user authenticated as %v", username)
sshCommand := strings.Trim(os.Getenv("SSH_ORIGINAL_COMMAND"), " \n")
if sshCommand == "" { // deny regular ssh login attempts
say("Hey %v! Sorry, Gitorious doesn't provide shell access. Bye!", username)
logger.Printf("SSH_ORIGINAL_COMMAND missing, aborting...")
os.Exit(1)
}
logger.Printf("processing command: %v", sshCommand)
command, repoPath, err := parseGitShellCommand(sshCommand)
if err != nil {
say("Invalid command")
logger.Printf("%v, aborting...", err)
os.Exit(1)
}
repoConfig, err := internalApi.GetRepoConfig(repoPath, username)
if err != nil {
if httpErr, ok := err.(*api.HttpError); ok {
if httpErr.StatusCode == 403 {
say("Access denied")
logger.Printf("%v, aborting...", err)
os.Exit(1)
} else if httpErr.StatusCode == 404 {
say("Invalid repository path")
logger.Printf("%v, aborting...", err)
os.Exit(1)
}
}
say("Error occured, please contact support")
logger.Printf("%v, aborting...", err)
os.Exit(1)
}
logger.Printf("full repo path: %v", repoConfig.FullPath)
if !common.PreReceiveHookExists(repoConfig.FullPath) {
say("Error occurred, please contact support")
logger.Printf("pre-receive hook for %v is missing or is not executable, aborting...", repoConfig.FullPath)
os.Exit(1)
}
gitShellCommand := formatGitShellCommand(command, repoConfig.FullPath)
env := createSshEnv(username, repoConfig)
logger.Printf(`invoking git-shell with command "%v"`, gitShellCommand)
if stderr, err := execGitShell(gitShellCommand, env, os.Stdin, os.Stdout); err != nil {
say("Error occurred, please contact support")
logger.Printf("error occured in git-shell: %v", err)
logger.Printf("stderr: %v", stderr)
os.Exit(1)
}
logger.Printf("done")
}
func (h *Handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
logger := &common.SessionLogger{h.logger, req.RemoteAddr}
logger.Printf("client connected")
var username string
if usernameOrEmail, password, ok := BasicAuth(req); ok {
user, err := h.internalApi.AuthenticateUser(usernameOrEmail, password)
if err != nil {
say(w, http.StatusInternalServerError, "Error occured, please contact support")
logger.Printf("%v, disconnecting...", err)
return
}
if user != nil {
username = user.Username
logger.Printf("user authenticated as %v", username)
} else {
requestBasicAuth(w, "Invalid username or password")
logger.Printf("invalid credentials, requesting basic auth, disconnecting...")
return
}
}
logger.Printf("processing request: %v", req.URL.String())
repoPath, slug, err := parsePath(req.URL.Path)
if err != nil {
say(w, http.StatusBadRequest, "Invalid command")
logger.Printf("%v, disconnecting...", err)
return
}
if (req.URL.Query().Get("service") == "git-receive-pack" || slug == "/git-receive-pack") && username == "" {
requestBasicAuth(w, "Anonymous pushing not allowed")
logger.Printf("denying anonymous push, requesting basic auth, disconnecting...")
return
}
repoConfig, err := h.internalApi.GetRepoConfig(repoPath, username)
if err != nil {
if httpErr, ok := err.(*api.HttpError); ok {
if httpErr.StatusCode == 403 {
requestBasicAuth(w, "Access denied")
logger.Printf("%v, requesting basic auth, disconnecting...", err)
return
} else if httpErr.StatusCode == 404 {
say(w, http.StatusNotFound, "Invalid repository path")
logger.Printf("%v, disconnecting...", err)
return
}
}
say(w, http.StatusInternalServerError, "Error occured, please contact support")
logger.Printf("%v, disconnecting...", err)
return
}
logger.Printf("full repo path: %v", repoConfig.FullPath)
if !common.PreReceiveHookExists(repoConfig.FullPath) {
say(w, http.StatusInternalServerError, "Error occurred, please contact support")
logger.Printf("pre-receive hook for %v is missing or is not executable, aborting...", repoConfig.FullPath)
return
}
translatedPath := repoConfig.FullPath + slug
env := createHttpEnv(username, repoConfig, translatedPath)
logger.Printf(`invoking git-http-backend with translated path "%v"`, translatedPath)
execGitHttpBackend(env, w, req)
logger.Printf("done")
}