From 1ce4fb256f43bb82c3b78a1cd7de87cc32690dc1 Mon Sep 17 00:00:00 2001
From: zeripath <art27@cantab.net>
Date: Thu, 22 Jul 2021 12:53:54 +0100
Subject: [PATCH] Restore creation of git-daemon-export-ok files (#16508)

Somewhere along the line the creation of git-daemon-export-ok
files disappeared but the updating of these files when
repo visibility changes remained. The problem is that the
current state will create files even when the org or user
is private.

This PR restores creation correctly.

Fix #15521

Signed-off-by: Andrew Thornton <art27@cantab.net>
---
 models/repo.go         | 15 +++++++--
 modules/doctor/misc.go | 73 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+), 2 deletions(-)

diff --git a/models/repo.go b/models/repo.go
index d6abc1b5e..de8a28253 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -1152,6 +1152,16 @@ func CreateRepository(ctx DBContext, doer, u *User, repo *Repository, overwriteO
 		return fmt.Errorf("recalculateAccesses: %v", err)
 	}
 
+	if u.Visibility == api.VisibleTypePublic && !repo.IsPrivate {
+		// Create/Remove git-daemon-export-ok for git-daemon...
+		daemonExportFile := path.Join(repo.RepoPath(), `git-daemon-export-ok`)
+		if f, err := os.Create(daemonExportFile); err != nil {
+			log.Error("Failed to create %s: %v", daemonExportFile, err)
+		} else {
+			f.Close()
+		}
+	}
+
 	if setting.Service.AutoWatchNewRepos {
 		if err = watchRepo(ctx.e, doer.ID, repo.ID, true); err != nil {
 			return fmt.Errorf("watchRepo: %v", err)
@@ -1310,15 +1320,16 @@ func updateRepository(e Engine, repo *Repository, visibilityChanged bool) (err e
 		// Create/Remove git-daemon-export-ok for git-daemon...
 		daemonExportFile := path.Join(repo.RepoPath(), `git-daemon-export-ok`)
 		isExist, err := util.IsExist(daemonExportFile)
+		isPublic := !repo.IsPrivate && repo.Owner.Visibility == api.VisibleTypePublic
 		if err != nil {
 			log.Error("Unable to check if %s exists. Error: %v", daemonExportFile, err)
 			return err
 		}
-		if repo.IsPrivate && isExist {
+		if !isPublic && isExist {
 			if err = util.Remove(daemonExportFile); err != nil {
 				log.Error("Failed to remove %s: %v", daemonExportFile, err)
 			}
-		} else if !repo.IsPrivate && !isExist {
+		} else if isPublic && !isExist {
 			if f, err := os.Create(daemonExportFile); err != nil {
 				log.Error("Failed to create %s: %v", daemonExportFile, err)
 			} else {
diff --git a/modules/doctor/misc.go b/modules/doctor/misc.go
index 0ca1e841e..47fee8f7f 100644
--- a/modules/doctor/misc.go
+++ b/modules/doctor/misc.go
@@ -6,7 +6,9 @@ package doctor
 
 import (
 	"fmt"
+	"os"
 	"os/exec"
+	"path"
 	"strings"
 
 	"code.gitea.io/gitea/models"
@@ -14,6 +16,9 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/repository"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/modules/util"
+	lru "github.com/hashicorp/golang-lru"
 	"xorm.io/builder"
 )
 
@@ -75,6 +80,7 @@ func checkUserStarNum(logger log.Logger, autofix bool) error {
 func checkEnablePushOptions(logger log.Logger, autofix bool) error {
 	numRepos := 0
 	numNeedUpdate := 0
+
 	if err := iterateRepositories(func(repo *models.Repository) error {
 		numRepos++
 		r, err := git.OpenRepository(repo.RepoPath())
@@ -114,6 +120,66 @@ func checkEnablePushOptions(logger log.Logger, autofix bool) error {
 	return nil
 }
 
+func checkDaemonExport(logger log.Logger, autofix bool) error {
+	numRepos := 0
+	numNeedUpdate := 0
+	cache, err := lru.New(512)
+	if err != nil {
+		logger.Critical("Unable to create cache: %v", err)
+		return err
+	}
+	if err := iterateRepositories(func(repo *models.Repository) error {
+		numRepos++
+
+		if owner, has := cache.Get(repo.OwnerID); has {
+			repo.Owner = owner.(*models.User)
+		} else {
+			if err := repo.GetOwner(); err != nil {
+				return err
+			}
+			cache.Add(repo.OwnerID, repo.Owner)
+		}
+
+		// Create/Remove git-daemon-export-ok for git-daemon...
+		daemonExportFile := path.Join(repo.RepoPath(), `git-daemon-export-ok`)
+		isExist, err := util.IsExist(daemonExportFile)
+		if err != nil {
+			log.Error("Unable to check if %s exists. Error: %v", daemonExportFile, err)
+			return err
+		}
+		isPublic := !repo.IsPrivate && repo.Owner.Visibility == structs.VisibleTypePublic
+
+		if isPublic != isExist {
+			numNeedUpdate++
+			if autofix {
+				if !isPublic && isExist {
+					if err = util.Remove(daemonExportFile); err != nil {
+						log.Error("Failed to remove %s: %v", daemonExportFile, err)
+					}
+				} else if isPublic && !isExist {
+					if f, err := os.Create(daemonExportFile); err != nil {
+						log.Error("Failed to create %s: %v", daemonExportFile, err)
+					} else {
+						f.Close()
+					}
+				}
+			}
+		}
+		return nil
+	}); err != nil {
+		logger.Critical("Unable to checkDaemonExport: %v", err)
+		return err
+	}
+
+	if autofix {
+		logger.Info("Updated git-daemon-export-ok files for %d of %d repositories.", numNeedUpdate, numRepos)
+	} else {
+		logger.Info("Checked %d repositories, %d need updates.", numRepos, numNeedUpdate)
+	}
+
+	return nil
+}
+
 func init() {
 	Register(&Check{
 		Title:     "Check if SCRIPT_TYPE is available",
@@ -143,4 +209,11 @@ func init() {
 		Run:       checkEnablePushOptions,
 		Priority:  7,
 	})
+	Register(&Check{
+		Title:     "Check git-daemon-export-ok files",
+		Name:      "check-git-daemon-export-ok",
+		IsDefault: false,
+		Run:       checkDaemonExport,
+		Priority:  8,
+	})
 }