Mulitple Gitea Doctor improvements (#10943) (#10990) (#10064) (#9095) (#10991)

* Mulitple Gitea Doctor improvements (#10943)

Backport #10943

* Add `gitea doctor --list` flag to list the checks that will be run, including those by default
* Add `gitea doctor --run` to run specific checks
* Add `gitea doctor --all` to run all checks
* Add db version checker
* Add non-default recalculate merge bases check/fixer to doctor
* Add hook checker (Fix #9878) and ensure hooks are executable (Fix #6319)
* Fix authorized_keys checker - slight change of functionality here because parsing the command is fragile and we should just check if the authorized_keys file is essentially the same as what gitea would produce. (This is still not perfect as order matters - we should probably just md5sum the two files.)
* Add SCRIPT_TYPE check (Fix #10977)
* Add `gitea doctor --fix` to attempt to fix what is possible to easily fix
* Add `gitea doctor --log-file` to set the log-file, be it a file, stdout or to switch off completely. (Fixes previously undetected bug with certain xorm logging configurations - see @6543 comment.)

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Switch to io.Writer instead of io.StringWriter

Signed-off-by: Andrew Thornton <art27@cantab.net>

8 files changed, 679 insertions, 21 deletions

diff --git a/cmd/doctor.go b/cmd/doctor.go
new file mode 100644
index 000000000..61ca27cf3
--- /dev/null
+++ b/cmd/doctor.go
@@ -0,0 +1,496 @@
+// Copyright 2019 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 cmd
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"fmt"
+	"io/ioutil"
+	golog "log"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"text/tabwriter"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/models/migrations"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/options"
+	"code.gitea.io/gitea/modules/setting"
+	"xorm.io/builder"
+
+	"github.com/urfave/cli"
+)
+
+// CmdDoctor represents the available doctor sub-command.
+var CmdDoctor = cli.Command{
+	Name:        "doctor",
+	Usage:       "Diagnose problems",
+	Description: "A command to diagnose problems with the current Gitea instance according to the given configuration.",
+	Action:      runDoctor,
+	Flags: []cli.Flag{
+		cli.BoolFlag{
+			Name:  "list",
+			Usage: "List the available checks",
+		},
+		cli.BoolFlag{
+			Name:  "default",
+			Usage: "Run the default checks (if neither --run or --all is set, this is the default behaviour)",
+		},
+		cli.StringSliceFlag{
+			Name:  "run",
+			Usage: "Run the provided checks - (if --default is set, the default checks will also run)",
+		},
+		cli.BoolFlag{
+			Name:  "all",
+			Usage: "Run all the available checks",
+		},
+		cli.BoolFlag{
+			Name:  "fix",
+			Usage: "Automatically fix what we can",
+		},
+		cli.StringFlag{
+			Name:  "log-file",
+			Usage: `Name of the log file (default: "doctor.log"). Set to "-" to output to stdout, set to "" to disable`,
+		},
+	},
+}
+
+type check struct {
+	title            string
+	name             string
+	isDefault        bool
+	f                func(ctx *cli.Context) ([]string, error)
+	abortIfFailed    bool
+	skipDatabaseInit bool
+}
+
+// checklist represents list for all checks
+var checklist = []check{
+	{
+		// NOTE: this check should be the first in the list
+		title:            "Check paths and basic configuration",
+		name:             "paths",
+		isDefault:        true,
+		f:                runDoctorPathInfo,
+		abortIfFailed:    true,
+		skipDatabaseInit: true,
+	},
+	{
+		title:         "Check Database Version",
+		name:          "check-db",
+		isDefault:     true,
+		f:             runDoctorCheckDBVersion,
+		abortIfFailed: true,
+	},
+	{
+		title:     "Check if OpenSSH authorized_keys file is up-to-date",
+		name:      "authorized_keys",
+		isDefault: true,
+		f:         runDoctorAuthorizedKeys,
+	},
+	{
+		title:     "Check if SCRIPT_TYPE is available",
+		name:      "script-type",
+		isDefault: false,
+		f:         runDoctorScriptType,
+	},
+	{
+		title:     "Check if hook files are up-to-date and executable",
+		name:      "hooks",
+		isDefault: false,
+		f:         runDoctorHooks,
+	},
+	{
+		title:     "Recalculate merge bases",
+		name:      "recalculate_merge_bases",
+		isDefault: false,
+		f:         runDoctorPRMergeBase,
+	},
+	// more checks please append here
+}
+
+func runDoctor(ctx *cli.Context) error {
+
+	// Silence the default loggers
+	log.DelNamedLogger("console")
+	log.DelNamedLogger(log.DEFAULT)
+
+	// Now setup our own
+	logFile := ctx.String("log-file")
+	if !ctx.IsSet("log-file") {
+		logFile = "doctor.log"
+	}
+
+	if len(logFile) == 0 {
+		log.NewLogger(1000, "doctor", "console", `{"level":"NONE","stacktracelevel":"NONE","colorize":"%t"}`)
+	} else if logFile == "-" {
+		log.NewLogger(1000, "doctor", "console", `{"level":"trace","stacktracelevel":"NONE"}`)
+	} else {
+		log.NewLogger(1000, "doctor", "file", fmt.Sprintf(`{"filename":%q,"level":"trace","stacktracelevel":"NONE"}`, logFile))
+	}
+
+	// Finally redirect the default golog to here
+	golog.SetFlags(0)
+	golog.SetPrefix("")
+	golog.SetOutput(log.NewLoggerAsWriter("INFO", log.GetLogger(log.DEFAULT)))
+
+	if ctx.IsSet("list") {
+		w := tabwriter.NewWriter(os.Stdout, 0, 8, 0, '\t', 0)
+		_, _ = w.Write([]byte("Default\tName\tTitle\n"))
+		for _, check := range checklist {
+			if check.isDefault {
+				_, _ = w.Write([]byte{'*'})
+			}
+			_, _ = w.Write([]byte{'\t'})
+			_, _ = w.Write([]byte(check.name))
+			_, _ = w.Write([]byte{'\t'})
+			_, _ = w.Write([]byte(check.title))
+			_, _ = w.Write([]byte{'\n'})
+		}
+		return w.Flush()
+	}
+
+	var checks []check
+	if ctx.Bool("all") {
+		checks = checklist
+	} else if ctx.IsSet("run") {
+		addDefault := ctx.Bool("default")
+		names := ctx.StringSlice("run")
+		for i, name := range names {
+			names[i] = strings.ToLower(strings.TrimSpace(name))
+		}
+
+		for _, check := range checklist {
+			if addDefault && check.isDefault {
+				checks = append(checks, check)
+				continue
+			}
+			for _, name := range names {
+				if name == check.name {
+					checks = append(checks, check)
+					break
+				}
+			}
+		}
+	} else {
+		for _, check := range checklist {
+			if check.isDefault {
+				checks = append(checks, check)
+			}
+		}
+	}
+
+	dbIsInit := false
+
+	for i, check := range checks {
+		if !dbIsInit && !check.skipDatabaseInit {
+			// Only open database after the most basic configuration check
+			setting.EnableXORMLog = false
+			if err := initDBDisableConsole(true); err != nil {
+				fmt.Println(err)
+				fmt.Println("Check if you are using the right config file. You can use a --config directive to specify one.")
+				return nil
+			}
+			dbIsInit = true
+		}
+		fmt.Println("[", i+1, "]", check.title)
+		messages, err := check.f(ctx)
+		for _, message := range messages {
+			fmt.Println("-", message)
+		}
+		if err != nil {
+			fmt.Println("Error:", err)
+			if check.abortIfFailed {
+				return nil
+			}
+		} else {
+			fmt.Println("OK.")
+		}
+		fmt.Println()
+	}
+	return nil
+}
+
+func runDoctorPathInfo(ctx *cli.Context) ([]string, error) {
+
+	res := make([]string, 0, 10)
+
+	if fi, err := os.Stat(setting.CustomConf); err != nil || !fi.Mode().IsRegular() {
+		res = append(res, fmt.Sprintf("Failed to find configuration file at '%s'.", setting.CustomConf))
+		res = append(res, fmt.Sprintf("If you've never ran Gitea yet, this is normal and '%s' will be created for you on first run.", setting.CustomConf))
+		res = append(res, "Otherwise check that you are running this command from the correct path and/or provide a `--config` parameter.")
+		return res, fmt.Errorf("can't proceed without a configuration file")
+	}
+
+	setting.NewContext()
+
+	fail := false
+
+	check := func(name, path string, is_dir, required, is_write bool) {
+		res = append(res, fmt.Sprintf("%-25s  '%s'", name+":", path))
+		fi, err := os.Stat(path)
+		if err != nil {
+			if os.IsNotExist(err) && ctx.Bool("fix") && is_dir {
+				if err := os.MkdirAll(path, 0777); err != nil {
+					res = append(res, fmt.Sprintf("    ERROR: %v", err))
+					fail = true
+					return
+				}
+				fi, err = os.Stat(path)
+			}
+		}
+		if err != nil {
+			if required {
+				res = append(res, fmt.Sprintf("    ERROR: %v", err))
+				fail = true
+				return
+			}
+			res = append(res, fmt.Sprintf("    NOTICE: not accessible (%v)", err))
+			return
+		}
+
+		if is_dir && !fi.IsDir() {
+			res = append(res, "    ERROR: not a directory")
+			fail = true
+			return
+		} else if !is_dir && !fi.Mode().IsRegular() {
+			res = append(res, "    ERROR: not a regular file")
+			fail = true
+		} else if is_write {
+			if err := runDoctorWritableDir(path); err != nil {
+				res = append(res, fmt.Sprintf("    ERROR: not writable: %v", err))
+				fail = true
+			}
+		}
+	}
+
+	// Note print paths inside quotes to make any leading/trailing spaces evident
+	check("Configuration File Path", setting.CustomConf, false, true, false)
+	check("Repository Root Path", setting.RepoRootPath, true, true, true)
+	check("Data Root Path", setting.AppDataPath, true, true, true)
+	check("Custom File Root Path", setting.CustomPath, true, false, false)
+	check("Work directory", setting.AppWorkPath, true, true, false)
+	check("Log Root Path", setting.LogRootPath, true, true, true)
+
+	if options.IsDynamic() {
+		// Do not check/report on StaticRootPath if data is embedded in Gitea (-tags bindata)
+		check("Static File Root Path", setting.StaticRootPath, true, true, false)
+	}
+
+	if fail {
+		return res, fmt.Errorf("please check your configuration file and try again")
+	}
+
+	return res, nil
+}
+
+func runDoctorWritableDir(path string) error {
+	// There's no platform-independent way of checking if a directory is writable
+	// https://stackoverflow.com/questions/20026320/how-to-tell-if-folder-exists-and-is-writable
+
+	tmpFile, err := ioutil.TempFile(path, "doctors-order")
+	if err != nil {
+		return err
+	}
+	if err := os.Remove(tmpFile.Name()); err != nil {
+		fmt.Printf("Warning: can't remove temporary file: '%s'\n", tmpFile.Name())
+	}
+	tmpFile.Close()
+	return nil
+}
+
+const tplCommentPrefix = `# gitea public key`
+
+func runDoctorAuthorizedKeys(ctx *cli.Context) ([]string, error) {
+	if setting.SSH.StartBuiltinServer || !setting.SSH.CreateAuthorizedKeysFile {
+		return nil, nil
+	}
+
+	fPath := filepath.Join(setting.SSH.RootPath, "authorized_keys")
+	f, err := os.Open(fPath)
+	if err != nil {
+		if ctx.Bool("fix") {
+			return []string{fmt.Sprintf("Error whilst opening authorized_keys: %v. Attempting regeneration", err)}, models.RewriteAllPublicKeys()
+		}
+		return nil, err
+	}
+	defer f.Close()
+
+	linesInAuthorizedKeys := map[string]bool{}
+
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, tplCommentPrefix) {
+			continue
+		}
+		linesInAuthorizedKeys[line] = true
+	}
+	f.Close()
+
+	// now we regenerate and check if there are any lines missing
+	regenerated := &bytes.Buffer{}
+	if err := models.RegeneratePublicKeys(regenerated); err != nil {
+		return nil, err
+	}
+	scanner = bufio.NewScanner(regenerated)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if strings.HasPrefix(line, tplCommentPrefix) {
+			continue
+		}
+		if ok := linesInAuthorizedKeys[line]; ok {
+			continue
+		}
+		if ctx.Bool("fix") {
+			return []string{"authorized_keys is out of date, attempting regeneration"}, models.RewriteAllPublicKeys()
+		}
+		return nil, fmt.Errorf("authorized_keys is out of date and should be regenerated with gitea admin regenerate keys")
+	}
+	return nil, nil
+}
+
+func runDoctorCheckDBVersion(ctx *cli.Context) ([]string, error) {
+	if err := models.NewEngine(context.Background(), migrations.EnsureUpToDate); err != nil {
+		if ctx.Bool("fix") {
+			return []string{fmt.Sprintf("WARN: Got Error %v during ensure up to date", err), "Attempting to migrate to the latest DB version to fix this."}, models.NewEngine(context.Background(), migrations.Migrate)
+		}
+		return nil, err
+	}
+	return nil, nil
+}
+
+func iterateRepositories(each func(*models.Repository) ([]string, error)) ([]string, error) {
+	results := []string{}
+	err := models.Iterate(
+		models.DefaultDBContext(),
+		new(models.Repository),
+		builder.Gt{"id": 0},
+		func(idx int, bean interface{}) error {
+			res, err := each(bean.(*models.Repository))
+			results = append(results, res...)
+			return err
+		},
+	)
+	return results, err
+}
+
+func iteratePRs(repo *models.Repository, each func(*models.Repository, *models.PullRequest) ([]string, error)) ([]string, error) {
+	results := []string{}
+	err := models.Iterate(
+		models.DefaultDBContext(),
+		new(models.PullRequest),
+		builder.Eq{"base_repo_id": repo.ID},
+		func(idx int, bean interface{}) error {
+			res, err := each(repo, bean.(*models.PullRequest))
+			results = append(results, res...)
+			return err
+		},
+	)
+	return results, err
+}
+
+func runDoctorHooks(ctx *cli.Context) ([]string, error) {
+	// Need to iterate across all of the repositories
+	return iterateRepositories(func(repo *models.Repository) ([]string, error) {
+		results, err := models.CheckDelegateHooks(repo.RepoPath())
+		if err != nil {
+			return nil, err
+		}
+		if len(results) > 0 && ctx.Bool("fix") {
+			return []string{fmt.Sprintf("regenerated hooks for %s", repo.FullName())}, models.CreateDelegateHooks(repo.RepoPath())
+		}
+
+		return results, nil
+	})
+}
+
+func runDoctorPRMergeBase(ctx *cli.Context) ([]string, error) {
+	numRepos := 0
+	numPRs := 0
+	numPRsUpdated := 0
+	results, err := iterateRepositories(func(repo *models.Repository) ([]string, error) {
+		numRepos++
+		return iteratePRs(repo, func(repo *models.Repository, pr *models.PullRequest) ([]string, error) {
+			numPRs++
+			results := []string{}
+			pr.BaseRepo = repo
+			repoPath := repo.RepoPath()
+
+			oldMergeBase := pr.MergeBase
+
+			if !pr.HasMerged {
+				var err error
+				pr.MergeBase, err = git.NewCommand("merge-base", "--", pr.BaseBranch, pr.GetGitRefName()).RunInDir(repoPath)
+				if err != nil {
+					var err2 error
+					pr.MergeBase, err2 = git.NewCommand("rev-parse", git.BranchPrefix+pr.BaseBranch).RunInDir(repoPath)
+					if err2 != nil {
+						results = append(results, fmt.Sprintf("WARN: Unable to get merge base for PR ID %d, #%d onto %s in %s/%s", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name))
+						log.Error("Unable to get merge base for PR ID %d, Index %d in %s/%s. Error: %v & %v", pr.ID, pr.Index, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err, err2)
+						return results, nil
+					}
+				}
+			} else {
+				parentsString, err := git.NewCommand("rev-list", "--parents", "-n", "1", pr.MergedCommitID).RunInDir(repoPath)
+				if err != nil {
+					results = append(results, fmt.Sprintf("WARN: Unable to get parents for merged PR ID %d, #%d onto %s in %s/%s", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name))
+					log.Error("Unable to get parents for merged PR ID %d, Index %d in %s/%s. Error: %v", pr.ID, pr.Index, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err)
+					return results, nil
+				}
+				parents := strings.Split(strings.TrimSpace(parentsString), " ")
+				if len(parents) < 2 {
+					return results, nil
+				}
+
+				args := append([]string{"merge-base", "--"}, parents[1:]...)
+				args = append(args, pr.GetGitRefName())
+
+				pr.MergeBase, err = git.NewCommand(args...).RunInDir(repoPath)
+				if err != nil {
+					results = append(results, fmt.Sprintf("WARN: Unable to get merge base for merged PR ID %d, #%d onto %s in %s/%s", pr.ID, pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name))
+					log.Error("Unable to get merge base for merged PR ID %d, Index %d in %s/%s. Error: %v", pr.ID, pr.Index, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, err)
+					return results, nil
+				}
+			}
+			pr.MergeBase = strings.TrimSpace(pr.MergeBase)
+			if pr.MergeBase != oldMergeBase {
+				if ctx.Bool("fix") {
+					if err := pr.UpdateCols("merge_base"); err != nil {
+						return results, err
+					}
+				} else {
+					results = append(results, fmt.Sprintf("#%d onto %s in %s/%s: MergeBase should be %s but is %s", pr.Index, pr.BaseBranch, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, oldMergeBase, pr.MergeBase))
+				}
+				numPRsUpdated++
+			}
+			return results, nil
+		})
+	})
+
+	if ctx.Bool("fix") {
+		results = append(results, fmt.Sprintf("%d PR mergebases updated of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos))
+	} else {
+		if numPRsUpdated > 0 && err == nil {
+			return results, fmt.Errorf("%d PRs with incorrect mergebases of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos)
+		}
+		results = append(results, fmt.Sprintf("%d PRs with incorrect mergebases of %d PRs total in %d repos", numPRsUpdated, numPRs, numRepos))
+	}
+
+	return results, err
+}
+
+func runDoctorScriptType(ctx *cli.Context) ([]string, error) {
+	path, err := exec.LookPath(setting.ScriptType)
+	if err != nil {
+		return []string{fmt.Sprintf("ScriptType %s is not on the current PATH", setting.ScriptType)}, err
+	}
+	return []string{fmt.Sprintf("ScriptType %s is on the current PATH at %s", setting.ScriptType, path)}, nil
+}
diff --git a/main.go b/main.go
index 30dbf2766..c67eaf769 100644
--- a/main.go
+++ b/main.go
@@ -68,6 +68,7 @@ arguments - which can alternatively be run by running the subcommand web.`
 		cmd.CmdMigrate,
 		cmd.CmdKeys,
 		cmd.CmdConvert,
+		cmd.CmdDoctor,
 	}
 	// Now adjust these commands to add our global configuration options
 
diff --git a/models/context.go b/models/context.go
index 5f47c595a..a8c33e3e9 100644
--- a/models/context.go
+++ b/models/context.go
@@ -4,6 +4,11 @@
 
 package models
 
+import (
+	"code.gitea.io/gitea/modules/setting"
+	"xorm.io/builder"
+)
+
 // DBContext represents a db context
 type DBContext struct {
 	e Engine
@@ -53,3 +58,10 @@ func WithTx(f func(ctx DBContext) error) error {
 	sess.Close()
 	return err
 }
+
+// Iterate iterates the databases and doing something
+func Iterate(ctx DBContext, tableBean interface{}, cond builder.Cond, fun func(idx int, bean interface{}) error) error {
+	return ctx.e.Where(cond).
+		BufferSize(setting.Database.IterateBufferSize).
+		Iterate(tableBean, fun)
+}
diff --git a/models/migrations/migrations.go b/models/migrations/migrations.go
index 73c9bc113..f626e4964 100644
--- a/models/migrations/migrations.go
+++ b/models/migrations/migrations.go
@@ -292,6 +292,52 @@ var migrations = []Migration{
 	NewMigration("Add block on rejected reviews branch protection", addBlockOnRejectedReviews),
 }
 
+// GetCurrentDBVersion returns the current db version
+func GetCurrentDBVersion(x *xorm.Engine) (int64, error) {
+	if err := x.Sync(new(Version)); err != nil {
+		return -1, fmt.Errorf("sync: %v", err)
+	}
+
+	currentVersion := &Version{ID: 1}
+	has, err := x.Get(currentVersion)
+	if err != nil {
+		return -1, fmt.Errorf("get: %v", err)
+	}
+	if !has {
+		return -1, nil
+	}
+	return currentVersion.Version, nil
+}
+
+// ExpectedVersion returns the expected db version
+func ExpectedVersion() int64 {
+	return int64(minDBVersion + len(migrations))
+}
+
+// EnsureUpToDate will check if the db is at the correct version
+func EnsureUpToDate(x *xorm.Engine) error {
+	currentDB, err := GetCurrentDBVersion(x)
+	if err != nil {
+		return err
+	}
+
+	if currentDB < 0 {
+		return fmt.Errorf("Database has not been initialised")
+	}
+
+	if minDBVersion > currentDB {
+		return fmt.Errorf("DB version %d (<= %d) is too old for auto-migration. Upgrade to Gitea 1.6.4 first then upgrade to this version", currentDB, minDBVersion)
+	}
+
+	expected := ExpectedVersion()
+
+	if currentDB != expected {
+		return fmt.Errorf(`Current database version %d is not equal to the expected version %d. Please run "gitea [--config /path/to/app.ini] migrate" to update the database version`, currentDB, expected)
+	}
+
+	return nil
+}
+
 // Migrate database to current version
 func Migrate(x *xorm.Engine) error {
 	if err := x.Sync(new(Version)); err != nil {
diff --git a/models/repo.go b/models/repo.go
index ed44a5e68..8d777a549 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -968,6 +968,21 @@ func CheckCreateRepository(doer, u *User, name string) error {
 	return nil
 }
 
+func getHookTemplates() (hookNames, hookTpls, giteaHookTpls []string) {
+	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 \"${hook}\" && test -f \"${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 \"${hook}\" && test -f \"${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 \"${hook}\" && test -f \"${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),
+	}
+	return
+}
+
 // CreateDelegateHooks creates all the hooks scripts for the repo
 func CreateDelegateHooks(repoPath string) error {
 	return createDelegateHooks(repoPath)
@@ -975,21 +990,7 @@ func CreateDelegateHooks(repoPath string) error {
 
 // 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),
-		}
-	)
-
+	hookNames, hookTpls, giteaHookTpls := getHookTemplates()
 	hookDir := filepath.Join(repoPath, "hooks")
 
 	for i, hookName := range hookNames {
@@ -1008,16 +1009,94 @@ func createDelegateHooks(repoPath string) (err error) {
 			return fmt.Errorf("write old hook file '%s': %v", oldHookPath, err)
 		}
 
+		if err = ensureExecutable(oldHookPath); err != nil {
+			return fmt.Errorf("Unable to set %s executable. Error %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)
 		}
+
+		if err = ensureExecutable(newHookPath); err != nil {
+			return fmt.Errorf("Unable to set %s executable. Error %v", oldHookPath, err)
+		}
 	}
 
 	return nil
 }
+func checkExecutable(filename string) bool {
+	fileInfo, err := os.Stat(filename)
+	if err != nil {
+		return false
+	}
+	return (fileInfo.Mode() & 0100) > 0
+}
+
+func ensureExecutable(filename string) error {
+	fileInfo, err := os.Stat(filename)
+	if err != nil {
+		return err
+	}
+	if (fileInfo.Mode() & 0100) > 0 {
+		return nil
+	}
+	mode := fileInfo.Mode() | 0100
+	return os.Chmod(filename, mode)
+}
+
+// CheckDelegateHooks checks the hooks scripts for the repo
+func CheckDelegateHooks(repoPath string) ([]string, error) {
+	hookNames, hookTpls, giteaHookTpls := getHookTemplates()
+
+	hookDir := filepath.Join(repoPath, "hooks")
+	results := make([]string, 0, 10)
+
+	for i, hookName := range hookNames {
+		oldHookPath := filepath.Join(hookDir, hookName)
+		newHookPath := filepath.Join(hookDir, hookName+".d", "gitea")
+
+		cont := false
+		if !com.IsExist(oldHookPath) {
+			results = append(results, fmt.Sprintf("old hook file %s does not exist", oldHookPath))
+			cont = true
+		}
+		if !com.IsExist(oldHookPath + ".d") {
+			results = append(results, fmt.Sprintf("hooks directory %s does not exist", oldHookPath+".d"))
+			cont = true
+		}
+		if !com.IsExist(newHookPath) {
+			results = append(results, fmt.Sprintf("new hook file %s does not exist", newHookPath))
+			cont = true
+		}
+		if cont {
+			continue
+		}
+		contents, err := ioutil.ReadFile(oldHookPath)
+		if err != nil {
+			return results, err
+		}
+		if string(contents) != hookTpls[i] {
+			results = append(results, fmt.Sprintf("old hook file %s is out of date", oldHookPath))
+		}
+		if !checkExecutable(oldHookPath) {
+			results = append(results, fmt.Sprintf("old hook file %s is not executable", oldHookPath))
+		}
+		contents, err = ioutil.ReadFile(newHookPath)
+		if err != nil {
+			return results, err
+		}
+		if string(contents) != giteaHookTpls[i] {
+			results = append(results, fmt.Sprintf("new hook file %s is out of date", newHookPath))
+		}
+		if !checkExecutable(newHookPath) {
+			results = append(results, fmt.Sprintf("new hook file %s is not executable", newHookPath))
+		}
+	}
+	return results, nil
+}
 
 // initRepoCommit temporarily changes with work directory.
 func initRepoCommit(tmpPath string, repo *Repository, u *User) (err error) {
diff --git a/models/ssh_key.go b/models/ssh_key.go
index f441c3e42..99e12e975 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -15,6 +15,7 @@ import (
 	"encoding/pem"
 	"errors"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"math/big"
 	"os"
@@ -687,14 +688,29 @@ func rewriteAllPublicKeys(e Engine) error {
 		}
 	}
 
-	err = e.Iterate(new(PublicKey), func(idx int, bean interface{}) (err error) {
-		_, err = t.WriteString((bean.(*PublicKey)).AuthorizedString())
+	if err := regeneratePublicKeys(e, t); err != nil {
+		return err
+	}
+
+	t.Close()
+	return os.Rename(tmpPath, fPath)
+}
+
+// RegeneratePublicKeys regenerates the authorized_keys file
+func RegeneratePublicKeys(t io.Writer) error {
+	return regeneratePublicKeys(x, t)
+}
+
+func regeneratePublicKeys(e Engine, t io.Writer) error {
+	err := e.Iterate(new(PublicKey), func(idx int, bean interface{}) (err error) {
+		_, err = t.Write([]byte((bean.(*PublicKey)).AuthorizedString()))
 		return err
 	})
 	if err != nil {
 		return err
 	}
 
+	fPath := filepath.Join(setting.SSH.RootPath, "authorized_keys")
 	if com.IsExist(fPath) {
 		f, err := os.Open(fPath)
 		if err != nil {
@@ -707,7 +723,7 @@ func rewriteAllPublicKeys(e Engine) error {
 				scanner.Scan()
 				continue
 			}
-			_, err = t.WriteString(line + "\n")
+			_, err = t.Write([]byte(line + "\n"))
 			if err != nil {
 				f.Close()
 				return err
@@ -715,9 +731,7 @@ func rewriteAllPublicKeys(e Engine) error {
 		}
 		f.Close()
 	}
-
-	t.Close()
-	return os.Rename(tmpPath, fPath)
+	return nil
 }
 
 // ________                .__                 ____  __.
diff --git a/modules/options/dynamic.go b/modules/options/dynamic.go
index 7de7cfbd6..20dde11dc 100644
--- a/modules/options/dynamic.go
+++ b/modules/options/dynamic.go
@@ -98,3 +98,8 @@ func fileFromDir(name string) ([]byte, error) {
 
 	return []byte{}, fmt.Errorf("Asset file does not exist: %s", name)
 }
+
+// IsDynamic will return false when using embedded data (-tags bindata)
+func IsDynamic() bool {
+	return true
+}
diff --git a/modules/options/static.go b/modules/options/static.go
index 1cf841ebb..f8811e43a 100644
--- a/modules/options/static.go
+++ b/modules/options/static.go
@@ -112,3 +112,8 @@ func fileFromDir(name string) ([]byte, error) {
 
 	return ioutil.ReadAll(f)
 }
+
+// IsDynamic will return false when using embedded data (-tags bindata)
+func IsDynamic() bool {
+	return false
+}