Move push update to post-receive and protected branch check to pre-receive (#1030)

* move all push update to git hook post-receive and protected branch check to git hook pre-receive

* add SSH_ORIGINAL_COMMAND check back

* remove all unused codes

* fix the import

9 files changed, 175 insertions, 415 deletions

diff --git a/cmd/hook.go b/cmd/hook.go
index 15ad74f8e0..a89c3741bf 100644
--- a/cmd/hook.go
+++ b/cmd/hook.go
@@ -5,11 +5,22 @@
 package cmd
 
 import (
+	"bufio"
+	"bytes"
+	"crypto/tls"
 	"fmt"
 	"os"
+	"strconv"
+	"strings"
 
+	"code.gitea.io/git"
 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/httplib"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
 
+	"github.com/Unknwon/com"
 	"github.com/urfave/cli"
 )
 
@@ -57,10 +68,59 @@ func runHookPreReceive(c *cli.Context) error {
 	if len(os.Getenv("SSH_ORIGINAL_COMMAND")) == 0 {
 		return nil
 	}
+
 	if err := setup("hooks/pre-receive.log"); err != nil {
 		fail("Hook pre-receive init failed", fmt.Sprintf("setup: %v", err))
 	}
 
+	// the environment setted on serv command
+	repoID, _ := strconv.ParseInt(os.Getenv(models.ProtectedBranchRepoID), 10, 64)
+	isWiki := (os.Getenv(models.EnvRepoIsWiki) == "true")
+
+	buf := bytes.NewBuffer(nil)
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		buf.Write(scanner.Bytes())
+		buf.WriteByte('\n')
+
+		// TODO: support news feeds for wiki
+		if isWiki {
+			continue
+		}
+
+		fields := bytes.Fields(scanner.Bytes())
+		if len(fields) != 3 {
+			continue
+		}
+
+		oldCommitID := string(fields[0])
+		newCommitID := string(fields[1])
+		refFullName := string(fields[2])
+
+		branchName := strings.TrimPrefix(refFullName, git.BranchPrefix)
+		protectBranch, err := models.GetProtectedBranchBy(repoID, branchName)
+		if err != nil {
+			log.GitLogger.Fatal(2, "retrieve protected branches information failed")
+		}
+
+		if protectBranch != nil {
+			fail(fmt.Sprintf("protected branch %s can not be pushed to", branchName), "")
+		}
+
+		// check and deletion
+		if newCommitID == git.EmptySHA {
+			fail(fmt.Sprintf("Branch '%s' is protected from deletion", branchName), "")
+		}
+
+		// Check force push
+		output, err := git.NewCommand("rev-list", oldCommitID, "^"+newCommitID).Run()
+		if err != nil {
+			fail("Internal error", "Fail to detect force push: %v", err)
+		} else if len(output) > 0 {
+			fail(fmt.Sprintf("Branch '%s' is protected from force push", branchName), "")
+		}
+	}
+
 	return nil
 }
 
@@ -73,23 +133,6 @@ func runHookUpdate(c *cli.Context) error {
 		fail("Hook update init failed", fmt.Sprintf("setup: %v", err))
 	}
 
-	args := c.Args()
-	if len(args) != 3 {
-		fail("Arguments received are not equal to three", "Arguments received are not equal to three")
-	} else if len(args[0]) == 0 {
-		fail("First argument 'refName' is empty", "First argument 'refName' is empty")
-	}
-
-	uuid := os.Getenv(envUpdateTaskUUID)
-	if err := models.AddUpdateTask(&models.UpdateTask{
-		UUID:        uuid,
-		RefName:     args[0],
-		OldCommitID: args[1],
-		NewCommitID: args[2],
-	}); err != nil {
-		fail("Internal error", "Fail to add update task '%s': %v", uuid, err)
-	}
-
 	return nil
 }
 
@@ -102,5 +145,63 @@ func runHookPostReceive(c *cli.Context) error {
 		fail("Hook post-receive init failed", fmt.Sprintf("setup: %v", err))
 	}
 
+	// the environment setted on serv command
+	repoUser := os.Getenv(models.EnvRepoUsername)
+	repoUserSalt := os.Getenv(models.EnvRepoUserSalt)
+	isWiki := (os.Getenv(models.EnvRepoIsWiki) == "true")
+	repoName := os.Getenv(models.EnvRepoName)
+	pusherID, _ := strconv.ParseInt(os.Getenv(models.EnvPusherID), 10, 64)
+	pusherName := os.Getenv(models.EnvPusherName)
+
+	buf := bytes.NewBuffer(nil)
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		buf.Write(scanner.Bytes())
+		buf.WriteByte('\n')
+
+		// TODO: support news feeds for wiki
+		if isWiki {
+			continue
+		}
+
+		fields := bytes.Fields(scanner.Bytes())
+		if len(fields) != 3 {
+			continue
+		}
+
+		oldCommitID := string(fields[0])
+		newCommitID := string(fields[1])
+		refFullName := string(fields[2])
+
+		if err := models.PushUpdate(models.PushUpdateOptions{
+			RefFullName:  refFullName,
+			OldCommitID:  oldCommitID,
+			NewCommitID:  newCommitID,
+			PusherID:     pusherID,
+			PusherName:   pusherName,
+			RepoUserName: repoUser,
+			RepoName:     repoName,
+		}); err != nil {
+			log.GitLogger.Error(2, "Update: %v", err)
+		}
+
+		// Ask for running deliver hook and test pull request tasks.
+		reqURL := setting.LocalURL + repoUser + "/" + repoName + "/tasks/trigger?branch=" +
+			strings.TrimPrefix(refFullName, git.BranchPrefix) + "&secret=" + base.EncodeMD5(repoUserSalt) + "&pusher=" + com.ToStr(pusherID)
+		log.GitLogger.Trace("Trigger task: %s", reqURL)
+
+		resp, err := httplib.Head(reqURL).SetTLSClientConfig(&tls.Config{
+			InsecureSkipVerify: true,
+		}).Response()
+		if err == nil {
+			resp.Body.Close()
+			if resp.StatusCode/100 != 2 {
+				log.GitLogger.Error(2, "Failed to trigger task: not 2xx response code")
+			}
+		} else {
+			log.GitLogger.Error(2, "Failed to trigger task: %v", err)
+		}
+	}
+
 	return nil
 }
diff --git a/cmd/serv.go b/cmd/serv.go
index 141a58a2ac..5b1caf4d34 100644
--- a/cmd/serv.go
+++ b/cmd/serv.go
@@ -6,7 +6,6 @@
 package cmd
 
 import (
-	"crypto/tls"
 	"encoding/json"
 	"fmt"
 	"os"
@@ -15,22 +14,17 @@ import (
 	"strings"
 	"time"
 
-	"code.gitea.io/git"
 	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/base"
-	"code.gitea.io/gitea/modules/httplib"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	"github.com/Unknwon/com"
 	"github.com/dgrijalva/jwt-go"
-	gouuid "github.com/satori/go.uuid"
 	"github.com/urfave/cli"
 )
 
 const (
 	accessDenied        = "Repository does not exist or you do not have access"
 	lfsAuthenticateVerb = "git-lfs-authenticate"
-	envUpdateTaskUUID   = "GITEA_UUID"
 )
 
 // CmdServ represents the available serv sub-command.
@@ -96,52 +90,6 @@ func fail(userMessage, logMessage string, args ...interface{}) {
 	os.Exit(1)
 }
 
-func handleUpdateTask(uuid string, user, repoUser *models.User, reponame string, isWiki bool) {
-	task, err := models.GetUpdateTaskByUUID(uuid)
-	if err != nil {
-		if models.IsErrUpdateTaskNotExist(err) {
-			log.GitLogger.Trace("No update task is presented: %s", uuid)
-			return
-		}
-		log.GitLogger.Fatal(2, "GetUpdateTaskByUUID: %v", err)
-	} else if err = models.DeleteUpdateTaskByUUID(uuid); err != nil {
-		log.GitLogger.Fatal(2, "DeleteUpdateTaskByUUID: %v", err)
-	}
-
-	if isWiki {
-		return
-	}
-
-	if err = models.PushUpdate(models.PushUpdateOptions{
-		RefFullName:  task.RefName,
-		OldCommitID:  task.OldCommitID,
-		NewCommitID:  task.NewCommitID,
-		PusherID:     user.ID,
-		PusherName:   user.Name,
-		RepoUserName: repoUser.Name,
-		RepoName:     reponame,
-	}); err != nil {
-		log.GitLogger.Error(2, "Update: %v", err)
-	}
-
-	// Ask for running deliver hook and test pull request tasks.
-	reqURL := setting.LocalURL + repoUser.Name + "/" + reponame + "/tasks/trigger?branch=" +
-		strings.TrimPrefix(task.RefName, git.BranchPrefix) + "&secret=" + base.EncodeMD5(repoUser.Salt) + "&pusher=" + com.ToStr(user.ID)
-	log.GitLogger.Trace("Trigger task: %s", reqURL)
-
-	resp, err := httplib.Head(reqURL).SetTLSClientConfig(&tls.Config{
-		InsecureSkipVerify: true,
-	}).Response()
-	if err == nil {
-		resp.Body.Close()
-		if resp.StatusCode/100 != 2 {
-			log.GitLogger.Error(2, "Failed to trigger task: not 2xx response code")
-		}
-	} else {
-		log.GitLogger.Error(2, "Failed to trigger task: %v", err)
-	}
-}
-
 func runServ(c *cli.Context) error {
 	if c.IsSet("config") {
 		setting.CustomConf = c.String("config")
@@ -187,6 +135,7 @@ func runServ(c *cli.Context) error {
 	if len(rr) != 2 {
 		fail("Invalid repository path", "Invalid repository path: %v", args)
 	}
+
 	username := strings.ToLower(rr[0])
 	reponame := strings.ToLower(strings.TrimSuffix(rr[1], ".git"))
 
@@ -196,6 +145,14 @@ func runServ(c *cli.Context) error {
 		reponame = reponame[:len(reponame)-5]
 	}
 
+	os.Setenv(models.EnvRepoUsername, username)
+	if isWiki {
+		os.Setenv(models.EnvRepoIsWiki, "true")
+	} else {
+		os.Setenv(models.EnvRepoIsWiki, "false")
+	}
+	os.Setenv(models.EnvRepoName, reponame)
+
 	repoUser, err := models.GetUserByName(username)
 	if err != nil {
 		if models.IsErrUserNotExist(err) {
@@ -204,6 +161,8 @@ func runServ(c *cli.Context) error {
 		fail("Internal error", "Failed to get repository owner (%s): %v", username, err)
 	}
 
+	os.Setenv(models.EnvRepoUserSalt, repoUser.Salt)
+
 	repo, err := models.GetRepositoryByName(repoUser.ID, reponame)
 	if err != nil {
 		if models.IsErrRepoNotExist(err) {
@@ -286,7 +245,8 @@ func runServ(c *cli.Context) error {
 					user.Name, requestedMode, repoPath)
 			}
 
-			os.Setenv("GITEA_PUSHER_NAME", user.Name)
+			os.Setenv(models.EnvPusherName, user.Name)
+			os.Setenv(models.EnvPusherID, fmt.Sprintf("%d", user.ID))
 		}
 	}
 
@@ -323,11 +283,6 @@ func runServ(c *cli.Context) error {
 		return nil
 	}
 
-	uuid := gouuid.NewV4().String()
-	os.Setenv(envUpdateTaskUUID, uuid)
-	// Keep the old env variable name for backward compability
-	os.Setenv("uuid", uuid)
-
 	// Special handle for Windows.
 	if setting.IsWindows {
 		verb = strings.Replace(verb, "-", " ", 1)
@@ -341,7 +296,6 @@ func runServ(c *cli.Context) error {
 		gitcmd = exec.Command(verb, repoPath)
 	}
 
-	os.Setenv(models.ProtectedBranchAccessMode, requestedMode.String())
 	os.Setenv(models.ProtectedBranchRepoID, fmt.Sprintf("%d", repo.ID))
 
 	gitcmd.Dir = setting.RepoRootPath
@@ -352,10 +306,6 @@ func runServ(c *cli.Context) error {
 		fail("Internal error", "Failed to execute git command: %v", err)
 	}
 
-	if requestedMode == models.AccessModeWrite {
-		handleUpdateTask(uuid, user, repoUser, reponame, isWiki)
-	}
-
 	// Update user key activity.
 	if keyID > 0 {
 		key, err := models.GetPublicKeyByID(keyID)
diff --git a/cmd/update.go b/cmd/update.go
deleted file mode 100644
index 58e60493d0..0000000000
--- a/cmd/update.go
+++ /dev/null
@@ -1,83 +0,0 @@
-// Copyright 2014 The Gogs Authors. All rights reserved.
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file.
-
-package cmd
-
-import (
-	"os"
-	"strconv"
-	"strings"
-
-	"github.com/urfave/cli"
-
-	"code.gitea.io/git"
-	"code.gitea.io/gitea/models"
-	"code.gitea.io/gitea/modules/log"
-	"code.gitea.io/gitea/modules/setting"
-)
-
-// CmdUpdate represents the available update sub-command.
-var CmdUpdate = cli.Command{
-	Name:        "update",
-	Usage:       "This command should only be called by Git hook",
-	Description: `Update get pushed info and insert into database`,
-	Action:      runUpdate,
-	Flags: []cli.Flag{
-		cli.StringFlag{
-			Name:  "config, c",
-			Value: "custom/conf/app.ini",
-			Usage: "Custom configuration file path",
-		},
-	},
-}
-
-func runUpdate(c *cli.Context) error {
-	if c.IsSet("config") {
-		setting.CustomConf = c.String("config")
-	}
-
-	setup("update.log")
-
-	if len(os.Getenv("SSH_ORIGINAL_COMMAND")) == 0 {
-		log.GitLogger.Trace("SSH_ORIGINAL_COMMAND is empty")
-		return nil
-	}
-
-	args := c.Args()
-	if len(args) != 3 {
-		log.GitLogger.Fatal(2, "Arguments received are not equal to three")
-	} else if len(args[0]) == 0 {
-		log.GitLogger.Fatal(2, "First argument 'refName' is empty, shouldn't use")
-	}
-
-	// protected branch check
-	branchName := strings.TrimPrefix(args[0], git.BranchPrefix)
-	repoID, _ := strconv.ParseInt(os.Getenv(models.ProtectedBranchRepoID), 10, 64)
-	log.GitLogger.Trace("pushing to %d %v", repoID, branchName)
-	accessMode := models.ParseAccessMode(os.Getenv(models.ProtectedBranchAccessMode))
-	// skip admin or owner AccessMode
-	if accessMode == models.AccessModeWrite {
-		protectBranch, err := models.GetProtectedBranchBy(repoID, branchName)
-		if err != nil {
-			log.GitLogger.Fatal(2, "retrieve protected branches information failed")
-		}
-
-		if protectBranch != nil {
-			log.GitLogger.Fatal(2, "protected branches can not be pushed to")
-		}
-	}
-
-	task := models.UpdateTask{
-		UUID:        os.Getenv("GITEA_UUID"),
-		RefName:     args[0],
-		OldCommitID: args[1],
-		NewCommitID: args[2],
-	}
-
-	if err := models.AddUpdateTask(&task); err != nil {
-		log.GitLogger.Fatal(2, "AddUpdateTask: %v", err)
-	}
-
-	return nil
-}
diff --git a/main.go b/main.go
index b7e8244b4b..6576bf3e89 100644
--- a/main.go
+++ b/main.go
@@ -40,5 +40,4 @@ func main() {
 	if err != nil {
 		log.Fatal(4, "Failed to run app with %s: %v", os.Args, err)
 	}
-
 }
diff --git a/models/fixtures/update_task.yml b/models/fixtures/update_task.yml
deleted file mode 100644
index ffcd5fd6fa..0000000000
--- a/models/fixtures/update_task.yml
+++ /dev/null
@@ -1,20 +0,0 @@
--
-  id: 1
-  uuid: uuid1
-  ref_name: refName1
-  old_commit_id: oldCommitId1
-  new_commit_id: newCommitId1
-
--
-  id: 2
-  uuid: uuid2
-  ref_name: refName2
-  old_commit_id: oldCommitId2
-  new_commit_id: newCommitId2
-
--
-  id: 3
-  uuid: uuid3
-  ref_name: refName3
-  old_commit_id: oldCommitId3
-  new_commit_id: newCommitId3
diff --git a/models/models.go b/models/models.go
index 0840b4600e..29428dba04 100644
--- a/models/models.go
+++ b/models/models.go
@@ -100,7 +100,6 @@ func init() {
 		new(Release),
 		new(LoginSource),
 		new(Webhook),
-		new(UpdateTask),
 		new(HookTask),
 		new(Team),
 		new(OrgUser),
@@ -316,7 +315,6 @@ func GetStatistic() (stats Statistic) {
 	stats.Counter.Label, _ = x.Count(new(Label))
 	stats.Counter.HookTask, _ = x.Count(new(HookTask))
 	stats.Counter.Team, _ = x.Count(new(Team))
-	stats.Counter.UpdateTask, _ = x.Count(new(UpdateTask))
 	stats.Counter.Attachment, _ = x.Count(new(Attachment))
 	return
 }
diff --git a/models/update.go b/models/update.go
index 677a9bda31..3cb0608594 100644
--- a/models/update.go
+++ b/models/update.go
@@ -15,40 +15,15 @@ import (
 	"code.gitea.io/gitea/modules/log"
 )
 
-// UpdateTask defines an UpdateTask
-type UpdateTask struct {
-	ID          int64  `xorm:"pk autoincr"`
-	UUID        string `xorm:"index"`
-	RefName     string
-	OldCommitID string
-	NewCommitID string
-}
-
-// AddUpdateTask adds an UpdateTask
-func AddUpdateTask(task *UpdateTask) error {
-	_, err := x.Insert(task)
-	return err
-}
-
-// GetUpdateTaskByUUID returns update task by given UUID.
-func GetUpdateTaskByUUID(uuid string) (*UpdateTask, error) {
-	task := &UpdateTask{
-		UUID: uuid,
-	}
-	has, err := x.Get(task)
-	if err != nil {
-		return nil, err
-	} else if !has {
-		return nil, ErrUpdateTaskNotExist{uuid}
-	}
-	return task, nil
-}
-
-// DeleteUpdateTaskByUUID deletes an UpdateTask from the database
-func DeleteUpdateTaskByUUID(uuid string) error {
-	_, err := x.Delete(&UpdateTask{UUID: uuid})
-	return err
-}
+// env keys for git hooks need
+const (
+	EnvRepoName     = "GITEA_REPO_NAME"
+	EnvRepoUsername = "GITEA_REPO_USER_NAME"
+	EnvRepoUserSalt = "GITEA_REPO_USER_SALT"
+	EnvRepoIsWiki   = "GITEA_REPO_IS_WIKI"
+	EnvPusherName   = "GITEA_PUSHER_NAME"
+	EnvPusherID     = "GITEA_PUSHER_ID"
+)
 
 // CommitToPushCommit transforms a git.Commit to PushCommit type.
 func CommitToPushCommit(commit *git.Commit) *PushCommit {
diff --git a/models/update_test.go b/models/update_test.go
index db9d7b94b9..ae95a9641b 100644
--- a/models/update_test.go
+++ b/models/update_test.go
@@ -14,40 +14,6 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestAddUpdateTask(t *testing.T) {
-	assert.NoError(t, PrepareTestDatabase())
-	task := &UpdateTask{
-		UUID:        "uuid4",
-		RefName:     "refName4",
-		OldCommitID: "oldCommitId4",
-		NewCommitID: "newCommitId4",
-	}
-	assert.NoError(t, AddUpdateTask(task))
-	AssertExistsAndLoadBean(t, task)
-}
-
-func TestGetUpdateTaskByUUID(t *testing.T) {
-	assert.NoError(t, PrepareTestDatabase())
-	task, err := GetUpdateTaskByUUID("uuid1")
-	assert.NoError(t, err)
-	assert.Equal(t, "uuid1", task.UUID)
-	assert.Equal(t, "refName1", task.RefName)
-	assert.Equal(t, "oldCommitId1", task.OldCommitID)
-	assert.Equal(t, "newCommitId1", task.NewCommitID)
-
-	_, err = GetUpdateTaskByUUID("invalid")
-	assert.Error(t, err)
-	assert.True(t, IsErrUpdateTaskNotExist(err))
-}
-
-func TestDeleteUpdateTaskByUUID(t *testing.T) {
-	assert.NoError(t, PrepareTestDatabase())
-	assert.NoError(t, DeleteUpdateTaskByUUID("uuid1"))
-	AssertNotExistsBean(t, &UpdateTask{UUID: "uuid1"})
-
-	assert.NoError(t, DeleteUpdateTaskByUUID("invalid"))
-}
-
 func TestCommitToPushCommit(t *testing.T) {
 	now := time.Now()
 	sig := &git.Signature{
diff --git a/routers/repo/http.go b/routers/repo/http.go
index 4c143f66d0..dc29651847 100644
--- a/routers/repo/http.go
+++ b/routers/repo/http.go
@@ -8,20 +8,15 @@ import (
 	"bytes"
 	"compress/gzip"
 	"fmt"
-	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"os/exec"
 	"path"
 	"regexp"
-	"runtime"
 	"strconv"
 	"strings"
 	"time"
 
-	"code.gitea.io/git"
-
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/context"
@@ -59,7 +54,7 @@ func HTTP(ctx *context.Context) {
 	isWiki := false
 	if strings.HasSuffix(reponame, ".wiki") {
 		isWiki = true
-		reponame = reponame[:len(reponame) - 5]
+		reponame = reponame[:len(reponame)-5]
 	}
 
 	repoUser, err := models.GetUserByName(username)
@@ -89,6 +84,7 @@ func HTTP(ctx *context.Context) {
 		authUser     *models.User
 		authUsername string
 		authPasswd   string
+		environ      []string
 	)
 
 	// check access
@@ -182,94 +178,42 @@ func HTTP(ctx *context.Context) {
 				}
 			}
 		}
-	}
 
-	callback := func(rpc string, input []byte) {
-		if rpc != "receive-pack" || isWiki {
-			return
+		environ = []string{
+			models.EnvRepoUsername + "=" + username,
+			models.EnvRepoName + "=" + reponame,
+			models.EnvRepoUserSalt + "=" + repoUser.Salt,
+			models.EnvPusherName + "=" + authUser.Name,
+			models.EnvPusherID + fmt.Sprintf("=%d", authUser.ID),
+			models.ProtectedBranchRepoID + fmt.Sprintf("=%d", repo.ID),
 		}
-
-		var lastLine int64
-		for {
-			head := input[lastLine: lastLine + 2]
-			if head[0] == '0' && head[1] == '0' {
-				size, err := strconv.ParseInt(string(input[lastLine + 2:lastLine + 4]), 16, 32)
-				if err != nil {
-					log.Error(4, "%v", err)
-					return
-				}
-
-				if size == 0 {
-					//fmt.Println(string(input[lastLine:]))
-					break
-				}
-
-				line := input[lastLine: lastLine + size]
-				idx := bytes.IndexRune(line, '\000')
-				if idx > -1 {
-					line = line[:idx]
-				}
-
-				fields := strings.Fields(string(line))
-				if len(fields) >= 3 {
-					oldCommitID := fields[0][4:]
-					newCommitID := fields[1]
-					refFullName := fields[2]
-
-					// FIXME: handle error.
-					if err = models.PushUpdate(models.PushUpdateOptions{
-						RefFullName:  refFullName,
-						OldCommitID:  oldCommitID,
-						NewCommitID:  newCommitID,
-						PusherID:     authUser.ID,
-						PusherName:   authUser.Name,
-						RepoUserName: username,
-						RepoName:     reponame,
-					}); err == nil {
-						go models.AddTestPullRequestTask(authUser, repo.ID, strings.TrimPrefix(refFullName, git.BranchPrefix), true)
-					}
-
-				}
-				lastLine = lastLine + size
-			} else {
-				break
-			}
-		}
-	}
-
-	params := make(map[string]string)
-
-	if askAuth {
-		params[models.ProtectedBranchUserID] = fmt.Sprintf("%d", authUser.ID)
-		if err == nil {
-			params[models.ProtectedBranchAccessMode] = accessMode.String()
+		if isWiki {
+			environ = append(environ, models.EnvRepoIsWiki+"=true")
+		} else {
+			environ = append(environ, models.EnvRepoIsWiki+"=false")
 		}
-		params[models.ProtectedBranchRepoID] = fmt.Sprintf("%d", repo.ID)
 	}
 
 	HTTPBackend(ctx, &serviceConfig{
 		UploadPack:  true,
 		ReceivePack: true,
-		Params:      params,
-		OnSucceed:   callback,
+		Env:         environ,
 	})(ctx.Resp, ctx.Req.Request)
-
-	runtime.GC()
 }
 
 type serviceConfig struct {
 	UploadPack  bool
 	ReceivePack bool
-	Params      map[string]string
-	OnSucceed   func(rpc string, input []byte)
+	Env         []string
 }
 
 type serviceHandler struct {
-	cfg  *serviceConfig
-	w    http.ResponseWriter
-	r    *http.Request
-	dir  string
-	file string
+	cfg     *serviceConfig
+	w       http.ResponseWriter
+	r       *http.Request
+	dir     string
+	file    string
+	environ []string
 }
 
 func (h *serviceHandler) setHeaderNoCache() {
@@ -278,42 +222,6 @@ func (h *serviceHandler) setHeaderNoCache() {
 	h.w.Header().Set("Cache-Control", "no-cache, max-age=0, must-revalidate")
 }
 
-func (h *serviceHandler) getBranch(input []byte) string {
-	var lastLine int64
-	var branchName string
-	for {
-		head := input[lastLine : lastLine+2]
-		if head[0] == '0' && head[1] == '0' {
-			size, err := strconv.ParseInt(string(input[lastLine+2:lastLine+4]), 16, 32)
-			if err != nil {
-				log.Error(4, "%v", err)
-				return branchName
-			}
-
-			if size == 0 {
-				//fmt.Println(string(input[lastLine:]))
-				break
-			}
-
-			line := input[lastLine : lastLine+size]
-			idx := bytes.IndexRune(line, '\000')
-			if idx > -1 {
-				line = line[:idx]
-			}
-
-			fields := strings.Fields(string(line))
-			if len(fields) >= 3 {
-				refFullName := fields[2]
-				branchName = strings.TrimPrefix(refFullName, git.BranchPrefix)
-			}
-			lastLine = lastLine + size
-		} else {
-			break
-		}
-	}
-	return branchName
-}
-
 func (h *serviceHandler) setHeaderCacheForever() {
 	now := time.Now().Unix()
 	expires := now + 31536000
@@ -370,7 +278,7 @@ func gitCommand(dir string, args ...string) []byte {
 
 func getGitConfig(option, dir string) string {
 	out := string(gitCommand(dir, "config", option))
-	return out[0: len(out) - 1]
+	return out[0 : len(out)-1]
 }
 
 func getConfigSetting(service, dir string) bool {
@@ -414,13 +322,8 @@ func serviceRPC(h serviceHandler, service string) {
 
 	h.w.Header().Set("Content-Type", fmt.Sprintf("application/x-git-%s-result", service))
 
-	var (
-		reqBody    = h.r.Body
-		input      []byte
-		br         io.Reader
-		err        error
-		branchName string
-	)
+	var err error
+	var reqBody = h.r.Body
 
 	// Handle GZIP.
 	if h.r.Header.Get("Content-Encoding") == "gzip" {
@@ -432,52 +335,23 @@ func serviceRPC(h serviceHandler, service string) {
 		}
 	}
 
-	if h.cfg.OnSucceed != nil {
-		input, err = ioutil.ReadAll(reqBody)
-		if err != nil {
-			log.GitLogger.Error(2, "fail to read request body: %v", err)
-			h.w.WriteHeader(http.StatusInternalServerError)
-			return
-		}
-
-		branchName = h.getBranch(input)
-		br = bytes.NewReader(input)
-	} else {
-		br = reqBody
-	}
-
-	// check protected branch
-	repoID, _ := strconv.ParseInt(h.cfg.Params[models.ProtectedBranchRepoID], 10, 64)
-	accessMode := models.ParseAccessMode(h.cfg.Params[models.ProtectedBranchAccessMode])
-	// skip admin or owner AccessMode
-	if accessMode == models.AccessModeWrite {
-		protectBranch, err := models.GetProtectedBranchBy(repoID, branchName)
-		if err != nil {
-			log.GitLogger.Error(2, "fail to get protected branch information: %v", err)
-			h.w.WriteHeader(http.StatusInternalServerError)
-			return
-		}
-
-		if protectBranch != nil {
-			log.GitLogger.Error(2, "protected branches can not be pushed to")
-			h.w.WriteHeader(http.StatusForbidden)
-			return
-		}
-	}
+	// set this for allow pre-receive and post-receive execute
+	h.environ = append(h.environ, "SSH_ORIGINAL_COMMAND="+service)
 
+	var stderr bytes.Buffer
 	cmd := exec.Command("git", service, "--stateless-rpc", h.dir)
 	cmd.Dir = h.dir
+	if service == "receive-pack" {
+		cmd.Env = append(os.Environ(), h.environ...)
+	}
 	cmd.Stdout = h.w
-	cmd.Stdin = br
+	cmd.Stdin = reqBody
+	cmd.Stderr = &stderr
 	if err := cmd.Run(); err != nil {
-		log.GitLogger.Error(2, "fail to serve RPC(%s): %v", service, err)
+		log.GitLogger.Error(2, "fail to serve RPC(%s): %v - %v", service, err, stderr)
 		h.w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
-
-	if h.cfg.OnSucceed != nil {
-		h.cfg.OnSucceed(service, input)
-	}
 }
 
 func serviceUploadPack(h serviceHandler) {
@@ -501,7 +375,7 @@ func updateServerInfo(dir string) []byte {
 }
 
 func packetWrite(str string) []byte {
-	s := strconv.FormatInt(int64(len(str) + 4), 16)
+	s := strconv.FormatInt(int64(len(str)+4), 16)
 	if len(s)%4 != 0 {
 		s = strings.Repeat("0", 4-len(s)%4) + s
 	}
@@ -593,7 +467,7 @@ func HTTPBackend(ctx *context.Context, cfg *serviceConfig) http.HandlerFunc {
 					return
 				}
 
-				route.handler(serviceHandler{cfg, w, r, dir, file})
+				route.handler(serviceHandler{cfg, w, r, dir, file, cfg.Env})
 				return
 			}
 		}