8798cf4e3b
* Set session and indexers' data files rel to AppDataPath The setting AppDataPath is now relative to the working directory. The session svc's PROVIDER_CONFIG now defaults to AppDataPath/data/sessions. The issue indexer's IssuePath now defaults to AppDataPath/indexers/issues.bleves. * fix bug
334 lines
8.8 KiB
Go
334 lines
8.8 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2016 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package cmd
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import (
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"encoding/json"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"time"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/private"
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"code.gitea.io/gitea/modules/setting"
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"github.com/Unknwon/com"
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"github.com/dgrijalva/jwt-go"
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"github.com/urfave/cli"
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)
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const (
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accessDenied = "Repository does not exist or you do not have access"
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lfsAuthenticateVerb = "git-lfs-authenticate"
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)
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// CmdServ represents the available serv sub-command.
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var CmdServ = cli.Command{
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Name: "serv",
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Usage: "This command should only be called by SSH shell",
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Description: `Serv provide access auth for repositories`,
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Action: runServ,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "config, c",
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Value: "custom/conf/app.ini",
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Usage: "Custom configuration file path",
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},
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},
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}
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func setup(logPath string) error {
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setting.NewContext()
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log.NewGitLogger(filepath.Join(setting.LogRootPath, logPath))
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models.LoadConfigs()
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if setting.UseSQLite3 || setting.UseTiDB {
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workPath := setting.AppWorkPath
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if err := os.Chdir(workPath); err != nil {
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log.GitLogger.Fatal(4, "Failed to change directory %s: %v", workPath, err)
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}
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}
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setting.NewXORMLogService(true)
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return models.SetEngine()
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}
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func parseCmd(cmd string) (string, string) {
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ss := strings.SplitN(cmd, " ", 2)
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if len(ss) != 2 {
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return "", ""
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}
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return ss[0], strings.Replace(ss[1], "'/", "'", 1)
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}
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var (
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allowedCommands = map[string]models.AccessMode{
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"git-upload-pack": models.AccessModeRead,
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"git-upload-archive": models.AccessModeRead,
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"git-receive-pack": models.AccessModeWrite,
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lfsAuthenticateVerb: models.AccessModeNone,
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}
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)
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func fail(userMessage, logMessage string, args ...interface{}) {
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fmt.Fprintln(os.Stderr, "Gitea:", userMessage)
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if len(logMessage) > 0 {
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if !setting.ProdMode {
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fmt.Fprintf(os.Stderr, logMessage+"\n", args...)
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}
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log.GitLogger.Fatal(3, logMessage, args...)
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return
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}
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log.GitLogger.Close()
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os.Exit(1)
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}
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func runServ(c *cli.Context) error {
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if c.IsSet("config") {
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setting.CustomConf = c.String("config")
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}
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if err := setup("serv.log"); err != nil {
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fail("System init failed", fmt.Sprintf("setup: %v", err))
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}
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if setting.SSH.Disabled {
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println("Gitea: SSH has been disabled")
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return nil
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}
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if len(c.Args()) < 1 {
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cli.ShowSubcommandHelp(c)
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return nil
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}
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cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
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if len(cmd) == 0 {
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println("Hi there, You've successfully authenticated, but Gitea does not provide shell access.")
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println("If this is unexpected, please log in with password and setup Gitea under another user.")
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return nil
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}
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verb, args := parseCmd(cmd)
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var lfsVerb string
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if verb == lfsAuthenticateVerb {
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if !setting.LFS.StartServer {
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fail("Unknown git command", "LFS authentication request over SSH denied, LFS support is disabled")
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}
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argsSplit := strings.Split(args, " ")
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if len(argsSplit) >= 2 {
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args = strings.TrimSpace(argsSplit[0])
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lfsVerb = strings.TrimSpace(argsSplit[1])
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}
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}
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repoPath := strings.ToLower(strings.Trim(args, "'"))
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rr := strings.SplitN(repoPath, "/", 2)
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if len(rr) != 2 {
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fail("Invalid repository path", "Invalid repository path: %v", args)
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}
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username := strings.ToLower(rr[0])
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reponame := strings.ToLower(strings.TrimSuffix(rr[1], ".git"))
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isWiki := false
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unitType := models.UnitTypeCode
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if strings.HasSuffix(reponame, ".wiki") {
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isWiki = true
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unitType = models.UnitTypeWiki
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reponame = reponame[:len(reponame)-5]
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}
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os.Setenv(models.EnvRepoUsername, username)
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if isWiki {
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os.Setenv(models.EnvRepoIsWiki, "true")
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} else {
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os.Setenv(models.EnvRepoIsWiki, "false")
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}
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os.Setenv(models.EnvRepoName, reponame)
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repoUser, err := models.GetUserByName(username)
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if err != nil {
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if models.IsErrUserNotExist(err) {
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fail("Repository owner does not exist", "Unregistered owner: %s", username)
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}
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fail("Internal error", "Failed to get repository owner (%s): %v", username, err)
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}
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repo, err := models.GetRepositoryByName(repoUser.ID, reponame)
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if err != nil {
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if models.IsErrRepoNotExist(err) {
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fail(accessDenied, "Repository does not exist: %s/%s", repoUser.Name, reponame)
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}
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fail("Internal error", "Failed to get repository: %v", err)
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}
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requestedMode, has := allowedCommands[verb]
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if !has {
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fail("Unknown git command", "Unknown git command %s", verb)
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}
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if verb == lfsAuthenticateVerb {
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if lfsVerb == "upload" {
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requestedMode = models.AccessModeWrite
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} else if lfsVerb == "download" {
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requestedMode = models.AccessModeRead
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} else {
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fail("Unknown LFS verb", "Unknown lfs verb %s", lfsVerb)
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}
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}
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// Prohibit push to mirror repositories.
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if requestedMode > models.AccessModeRead && repo.IsMirror {
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fail("mirror repository is read-only", "")
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}
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// Allow anonymous clone for public repositories.
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var (
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keyID int64
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user *models.User
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)
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if requestedMode == models.AccessModeWrite || repo.IsPrivate {
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keys := strings.Split(c.Args()[0], "-")
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if len(keys) != 2 {
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fail("Key ID format error", "Invalid key argument: %s", c.Args()[0])
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}
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key, err := models.GetPublicKeyByID(com.StrTo(keys[1]).MustInt64())
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if err != nil {
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fail("Invalid key ID", "Invalid key ID[%s]: %v", c.Args()[0], err)
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}
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keyID = key.ID
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// Check deploy key or user key.
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if key.Type == models.KeyTypeDeploy {
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if key.Mode < requestedMode {
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fail("Key permission denied", "Cannot push with deployment key: %d", key.ID)
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}
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// Check if this deploy key belongs to current repository.
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if !models.HasDeployKey(key.ID, repo.ID) {
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fail("Key access denied", "Deploy key access denied: [key_id: %d, repo_id: %d]", key.ID, repo.ID)
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}
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// Update deploy key activity.
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deployKey, err := models.GetDeployKeyByRepo(key.ID, repo.ID)
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if err != nil {
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fail("Internal error", "GetDeployKey: %v", err)
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}
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deployKey.Updated = time.Now()
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if err = models.UpdateDeployKey(deployKey); err != nil {
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fail("Internal error", "UpdateDeployKey: %v", err)
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}
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} else {
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user, err = models.GetUserByKeyID(key.ID)
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if err != nil {
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fail("internal error", "Failed to get user by key ID(%d): %v", keyID, err)
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}
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mode, err := models.AccessLevel(user.ID, repo)
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if err != nil {
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fail("Internal error", "Failed to check access: %v", err)
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} else if mode < requestedMode {
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clientMessage := accessDenied
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if mode >= models.AccessModeRead {
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clientMessage = "You do not have sufficient authorization for this action"
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}
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fail(clientMessage,
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"User %s does not have level %v access to repository %s",
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user.Name, requestedMode, repoPath)
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}
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if !repo.CheckUnitUser(user.ID, user.IsAdmin, unitType) {
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fail("You do not have allowed for this action",
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"User %s does not have allowed access to repository %s 's code",
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user.Name, repoPath)
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}
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os.Setenv(models.EnvPusherName, user.Name)
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os.Setenv(models.EnvPusherID, fmt.Sprintf("%d", user.ID))
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}
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}
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//LFS token authentication
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if verb == lfsAuthenticateVerb {
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url := fmt.Sprintf("%s%s/%s.git/info/lfs", setting.AppURL, repoUser.Name, repo.Name)
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now := time.Now()
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
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"repo": repo.ID,
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"op": lfsVerb,
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"exp": now.Add(5 * time.Minute).Unix(),
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"nbf": now.Unix(),
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})
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// Sign and get the complete encoded token as a string using the secret
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tokenString, err := token.SignedString(setting.LFS.JWTSecretBytes)
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if err != nil {
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fail("Internal error", "Failed to sign JWT token: %v", err)
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}
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tokenAuthentication := &models.LFSTokenResponse{
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Header: make(map[string]string),
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Href: url,
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}
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tokenAuthentication.Header["Authorization"] = fmt.Sprintf("Bearer %s", tokenString)
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enc := json.NewEncoder(os.Stdout)
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err = enc.Encode(tokenAuthentication)
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if err != nil {
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fail("Internal error", "Failed to encode LFS json response: %v", err)
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}
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return nil
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}
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// Special handle for Windows.
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if setting.IsWindows {
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verb = strings.Replace(verb, "-", " ", 1)
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}
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var gitcmd *exec.Cmd
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verbs := strings.Split(verb, " ")
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if len(verbs) == 2 {
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gitcmd = exec.Command(verbs[0], verbs[1], repoPath)
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} else {
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gitcmd = exec.Command(verb, repoPath)
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}
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if isWiki {
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if err = repo.InitWiki(); err != nil {
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fail("Internal error", "Failed to init wiki repo: %v", err)
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}
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}
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os.Setenv(models.ProtectedBranchRepoID, fmt.Sprintf("%d", repo.ID))
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gitcmd.Dir = setting.RepoRootPath
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gitcmd.Stdout = os.Stdout
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gitcmd.Stdin = os.Stdin
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gitcmd.Stderr = os.Stderr
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if err = gitcmd.Run(); err != nil {
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fail("Internal error", "Failed to execute git command: %v", err)
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}
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// Update user key activity.
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if keyID > 0 {
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if err = private.UpdatePublicKeyUpdated(keyID); err != nil {
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fail("Internal error", "UpdatePublicKey: %v", err)
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}
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}
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return nil
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}
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