From 6c86038775037d8c1c1bac1d2a632e74414fcd69 Mon Sep 17 00:00:00 2001
From: Andrew Thornton <art27@cantab.net>
Date: Wed, 21 Jul 2021 22:01:09 +0100
Subject: [PATCH] Restore creation of git-daemon-export-ok files

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 d6abc1b5e3883..de8a2825313ad 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 0ca1e841eefd5..47fee8f7fd9fb 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,
+	})
 }