From d92781bf941972761177ac9e07441f8893758fd3 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Tue, 21 Jan 2020 04:01:19 +0800
Subject: Refactor repository check and sync functions (#9854)

Move more general repository functions out of models/repo.go
---
 modules/repository/hooks.go | 104 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 modules/repository/hooks.go

(limited to 'modules/repository/hooks.go')

diff --git a/modules/repository/hooks.go b/modules/repository/hooks.go
new file mode 100644
index 0000000000..60e3418571
--- /dev/null
+++ b/modules/repository/hooks.go
@@ -0,0 +1,104 @@
+// Copyright 2020 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 repository
+
+import (
+	"context"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
+
+	"xorm.io/builder"
+)
+
+// CreateDelegateHooks creates all the hooks scripts for the repo
+func CreateDelegateHooks(repoPath string) error {
+	return createDelegateHooks(repoPath)
+}
+
+// createDelegateHooks creates all the hooks scripts for the repo
+func createDelegateHooks(repoPath string) (err error) {
+
+	var (
+		hookNames = []string{"pre-receive", "update", "post-receive"}
+		hookTpls  = []string{
+			fmt.Sprintf("#!/usr/bin/env %s\ndata=$(cat)\nexitcodes=\"\"\nhookname=$(basename $0)\nGIT_DIR=${GIT_DIR:-$(dirname $0)}\n\nfor hook in ${GIT_DIR}/hooks/${hookname}.d/*; do\ntest -x \"${hook}\" || continue\necho \"${data}\" | \"${hook}\"\nexitcodes=\"${exitcodes} $?\"\ndone\n\nfor i in ${exitcodes}; do\n[ ${i} -eq 0 ] || exit ${i}\ndone\n", setting.ScriptType),
+			fmt.Sprintf("#!/usr/bin/env %s\nexitcodes=\"\"\nhookname=$(basename $0)\nGIT_DIR=${GIT_DIR:-$(dirname $0)}\n\nfor hook in ${GIT_DIR}/hooks/${hookname}.d/*; do\ntest -x \"${hook}\" || continue\n\"${hook}\" $1 $2 $3\nexitcodes=\"${exitcodes} $?\"\ndone\n\nfor i in ${exitcodes}; do\n[ ${i} -eq 0 ] || exit ${i}\ndone\n", setting.ScriptType),
+			fmt.Sprintf("#!/usr/bin/env %s\ndata=$(cat)\nexitcodes=\"\"\nhookname=$(basename $0)\nGIT_DIR=${GIT_DIR:-$(dirname $0)}\n\nfor hook in ${GIT_DIR}/hooks/${hookname}.d/*; do\ntest -x \"${hook}\" || continue\necho \"${data}\" | \"${hook}\"\nexitcodes=\"${exitcodes} $?\"\ndone\n\nfor i in ${exitcodes}; do\n[ ${i} -eq 0 ] || exit ${i}\ndone\n", 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),
+		}
+	)
+
+	hookDir := filepath.Join(repoPath, "hooks")
+
+	for i, hookName := range hookNames {
+		oldHookPath := filepath.Join(hookDir, hookName)
+		newHookPath := filepath.Join(hookDir, hookName+".d", "gitea")
+
+		if err := os.MkdirAll(filepath.Join(hookDir, hookName+".d"), os.ModePerm); err != nil {
+			return fmt.Errorf("create hooks dir '%s': %v", filepath.Join(hookDir, hookName+".d"), err)
+		}
+
+		// WARNING: This will override all old server-side hooks
+		if err = os.Remove(oldHookPath); err != nil && !os.IsNotExist(err) {
+			return fmt.Errorf("unable to pre-remove old hook file '%s' prior to rewriting: %v ", oldHookPath, 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 = os.Remove(newHookPath); err != nil && !os.IsNotExist(err) {
+			return fmt.Errorf("unable to pre-remove new hook file '%s' prior to rewriting: %v", newHookPath, err)
+		}
+		if err = ioutil.WriteFile(newHookPath, []byte(giteaHookTpls[i]), 0777); err != nil {
+			return fmt.Errorf("write new hook file '%s': %v", newHookPath, err)
+		}
+	}
+
+	return nil
+}
+
+// SyncRepositoryHooks rewrites all repositories' pre-receive, update and post-receive hooks
+// to make sure the binary and custom conf path are up-to-date.
+func SyncRepositoryHooks(ctx context.Context) error {
+	log.Trace("Doing: SyncRepositoryHooks")
+
+	if err := models.Iterate(
+		models.DefaultDBContext(),
+		new(models.Repository),
+		builder.Gt{"id": 0},
+		func(idx int, bean interface{}) error {
+			select {
+			case <-ctx.Done():
+				return fmt.Errorf("Aborted due to shutdown")
+			default:
+			}
+
+			if err := createDelegateHooks(bean.(*models.Repository).RepoPath()); err != nil {
+				return fmt.Errorf("SyncRepositoryHook: %v", err)
+			}
+			if bean.(*models.Repository).HasWiki() {
+				if err := createDelegateHooks(bean.(*models.Repository).WikiPath()); err != nil {
+					return fmt.Errorf("SyncRepositoryHook: %v", err)
+				}
+			}
+			return nil
+		},
+	); err != nil {
+		return err
+	}
+
+	log.Trace("Finished: SyncRepositoryHooks")
+	return nil
+}
-- 
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