From 1ccdf19fae06b9d568268b83c05c14f4081663c8 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Mon, 13 Mar 2017 14:27:29 +0800
Subject: [PATCH] fix forget migration for wiki hooks (#1227)

---
 models/migrations/migrations.go |  2 +
 models/migrations/v22.go        | 94 +++++++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 models/migrations/v22.go

diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index bcf6285923..1425dbffcf 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -92,6 +92,8 @@ var migrations = []Migration{
 	NewMigration("use new avatar path name for security reason", useNewNameAvatars),
 	// v21 -> v22
 	NewMigration("rewrite authorized_keys file via new format", useNewPublickeyFormat),
+	// v21 -> v22
+	NewMigration("generate and migrate wiki Git hooks", generateAndMigrateWikiGitHooks),
 }
 
 // Migrate database to current version
diff --git a/models/migrations/v22.go b/models/migrations/v22.go
new file mode 100644
index 0000000000..17709496e1
--- /dev/null
+++ b/models/migrations/v22.go
@@ -0,0 +1,94 @@
+// Copyright 2017 The Gitea 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 migrations
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/Unknwon/com"
+	"github.com/go-xorm/xorm"
+)
+
+func generateAndMigrateWikiGitHooks(x *xorm.Engine) (err error) {
+	type Repository struct {
+		ID      int64
+		OwnerID int64
+		Name    string
+	}
+	type User struct {
+		ID   int64
+		Name string
+	}
+
+	var (
+		hookNames = []string{"pre-receive", "update", "post-receive"}
+		hookTpls  = []string{
+			fmt.Sprintf("#!/usr/bin/env %s\nORI_DIR=`pwd`\nSHELL_FOLDER=$(cd \"$(dirname \"$0\")\";pwd)\ncd \"$ORI_DIR\"\nfor i in `ls \"$SHELL_FOLDER/pre-receive.d\"`; do\n    sh \"$SHELL_FOLDER/pre-receive.d/$i\"\ndone", setting.ScriptType),
+			fmt.Sprintf("#!/usr/bin/env %s\nORI_DIR=`pwd`\nSHELL_FOLDER=$(cd \"$(dirname \"$0\")\";pwd)\ncd \"$ORI_DIR\"\nfor i in `ls \"$SHELL_FOLDER/update.d\"`; do\n    sh \"$SHELL_FOLDER/update.d/$i\" $1 $2 $3\ndone", setting.ScriptType),
+			fmt.Sprintf("#!/usr/bin/env %s\nORI_DIR=`pwd`\nSHELL_FOLDER=$(cd \"$(dirname \"$0\")\";pwd)\ncd \"$ORI_DIR\"\nfor i in `ls \"$SHELL_FOLDER/post-receive.d\"`; do\n    sh \"$SHELL_FOLDER/post-receive.d/$i\"\ndone", setting.ScriptType),
+		}
+		giteaHookTpls = []string{
+			fmt.Sprintf("#!/usr/bin/env %s\n\"%s\" hook --config='%s' pre-receive\n", setting.ScriptType, setting.AppPath, setting.CustomConf),
+			fmt.Sprintf("#!/usr/bin/env %s\n\"%s\" hook --config='%s' update $1 $2 $3\n", setting.ScriptType, setting.AppPath, setting.CustomConf),
+			fmt.Sprintf("#!/usr/bin/env %s\n\"%s\" hook --config='%s' post-receive\n", setting.ScriptType, setting.AppPath, setting.CustomConf),
+		}
+	)
+
+	return x.Where("id > 0").Iterate(new(Repository),
+		func(idx int, bean interface{}) error {
+			repo := bean.(*Repository)
+			user := new(User)
+			has, err := x.Where("id = ?", repo.OwnerID).Get(user)
+			if err != nil {
+				return fmt.Errorf("query owner of repository [repo_id: %d, owner_id: %d]: %v", repo.ID, repo.OwnerID, err)
+			} else if !has {
+				return nil
+			}
+
+			repoPath := filepath.Join(setting.RepoRootPath, strings.ToLower(user.Name), strings.ToLower(repo.Name)) + ".wiki.git"
+			if !com.IsExist(repoPath) {
+				return nil
+			}
+			hookDir := filepath.Join(repoPath, "hooks")
+
+			for i, hookName := range hookNames {
+				oldHookPath := filepath.Join(hookDir, hookName)
+				newHookPath := filepath.Join(hookDir, hookName+".d", "gitea")
+
+				customHooksDir := filepath.Join(hookDir, hookName+".d")
+				// if it's exist, that means you have upgraded ever
+				if com.IsExist(customHooksDir) {
+					continue
+				}
+
+				if err = os.MkdirAll(customHooksDir, os.ModePerm); err != nil {
+					return fmt.Errorf("create hooks dir '%s': %v", customHooksDir, err)
+				}
+
+				// WARNING: Old server-side hooks will be moved to sub directory with the same name
+				if hookName != "update" && com.IsExist(oldHookPath) {
+					newPlace := filepath.Join(hookDir, hookName+".d", hookName)
+					if err = os.Rename(oldHookPath, newPlace); err != nil {
+						return fmt.Errorf("Remove old hook file '%s' to '%s': %v", oldHookPath, newPlace, err)
+					}
+				}
+
+				if err = ioutil.WriteFile(oldHookPath, []byte(hookTpls[i]), 0777); err != nil {
+					return fmt.Errorf("write old hook file '%s': %v", oldHookPath, err)
+				}
+
+				if err = ioutil.WriteFile(newHookPath, []byte(giteaHookTpls[i]), 0777); err != nil {
+					return fmt.Errorf("write new hook file '%s': %v", oldHookPath, err)
+				}
+			}
+			return nil
+		})
+}