Add gogs fix location command

cmd/fix.go

@@ -5,10 +5,16 @@
 package cmd
 
 import (
+	"bufio"
 	"fmt"
+	"io"
+	"io/ioutil"
 	"os"
+	"path"
+	"strings"
 
 	"github.com/codegangsta/cli"
+
 	"github.com/gogits/gogs/models"
 	"github.com/gogits/gogs/modules/setting"
 )
@@ -16,28 +22,152 @@ import (
 var CmdFix = cli.Command{
 	Name:        "fix",
 	Usage:       "This command for upgrade from old version",
-	Description: `Fix provide upgrade from old version`,
 	Action:      runFix,
+	Subcommands: fixCommands,
 	Flags:       []cli.Flag{},
 }
 
-func runFix(k *cli.Context) {
-	workDir, _ := setting.WorkDir()
-	newLogger(workDir)
-
-	setting.NewConfigContext()
-	models.LoadModelsConfig()
-
-	if models.UseSQLite3 {
-		os.Chdir(workDir)
-	}
-
-	models.SetEngine()
-
-	err := models.Fix()
-	if err != nil {
-		fmt.Println(err)
-	} else {
-		fmt.Println("Fix successfully!")
-	}
+func runFix(ctx *cli.Context) {
+}
+
+var fixCommands = []cli.Command{
+	{
+		Name:  "location",
+		Usage: "Change Gogs app location",
+		Description: `Command location fixes location change of Gogs
+
+gogs fix location <old Gogs path>
+`,
+		Action: runFixLocation,
+	},
+}
+
+// rewriteAuthorizedKeys replaces old Gogs path to the new one.
+func rewriteAuthorizedKeys(sshPath, oldPath, newPath string) error {
+	fr, err := os.Open(sshPath)
+	if err != nil {
+		return err
+	}
+	defer fr.Close()
+
+	tmpPath := sshPath + ".tmp"
+	fw, err := os.Create(tmpPath)
+	if err != nil {
+		return err
+	}
+	defer fw.Close()
+
+	oldPath = "command=\"" + oldPath + " serv"
+	newPath = "command=\"" + newPath + " serv"
+	buf := bufio.NewReader(fr)
+	for {
+		line, errRead := buf.ReadString('\n')
+		line = strings.TrimSpace(line)
+
+		if errRead != nil {
+			if errRead != io.EOF {
+				return errRead
+			}
+
+			// Reached end of file, if nothing to read then break,
+			// otherwise handle the last line.
+			if len(line) == 0 {
+				break
+			}
+		}
+
+		// Still finding the line, copy the line that currently read.
+		if _, err = fw.WriteString(strings.Replace(line, oldPath, newPath, 1) + "\n"); err != nil {
+			return err
+		}
+
+		if errRead == io.EOF {
+			break
+		}
+	}
+
+	if err = os.Remove(sshPath); err != nil {
+		return err
+	}
+	return os.Rename(tmpPath, sshPath)
+}
+
+func rewriteUpdateHook(path, appPath string) error {
+	rp := strings.NewReplacer("\\", "/", " ", "\\ ")
+	if err := ioutil.WriteFile(path, []byte(fmt.Sprintf(models.TPL_UPDATE_HOOK,
+		setting.ScriptType, rp.Replace(appPath))), os.ModePerm); err != nil {
+		return err
+	}
+	return nil
+}
+
+func walkDir(rootPath, recPath, appPath string, depth int) error {
+	depth++
+	if depth > 3 {
+		return nil
+	} else if depth == 3 {
+		if err := rewriteUpdateHook(path.Join(rootPath, "hooks/update"), appPath); err != nil {
+			return err
+		}
+	}
+
+	dir, err := os.Open(rootPath)
+	if err != nil {
+		return err
+	}
+	defer dir.Close()
+
+	fis, err := dir.Readdir(0)
+	if err != nil {
+		return err
+	}
+
+	for _, fi := range fis {
+		if strings.Contains(fi.Name(), ".DS_Store") {
+			continue
+		}
+
+		relPath := path.Join(recPath, fi.Name())
+		curPath := path.Join(rootPath, fi.Name())
+		if fi.IsDir() {
+			if err = walkDir(curPath, relPath, appPath, depth); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func runFixLocation(ctx *cli.Context) {
+	if len(ctx.Args()) != 1 {
+		fmt.Println("Incorrect arguments number, expect 1")
+		os.Exit(2)
+	}
+
+	execPath, _ := setting.ExecPath()
+
+	oldPath := ctx.Args().First()
+	fmt.Printf("Old location: %s\n", oldPath)
+	fmt.Println("This command should be executed in the new Gogs path")
+	fmt.Printf("Do you want to change Gogs app path from old location to:\n")
+	fmt.Printf("-> %s?\n", execPath)
+	fmt.Print("Press <enter> to continue, use <Ctrl+c> to exit.")
+	fmt.Scanln()
+
+	// Fix in authorized_keys file.
+	sshPath := path.Join(models.SshPath, "authorized_keys")
+	fmt.Printf("Fixing pathes in file: %s\n", sshPath)
+	if err := rewriteAuthorizedKeys(sshPath, oldPath, execPath); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+
+	// Fix position in gogs-repositories.
+	setting.NewConfigContext()
+	fmt.Printf("Fixing pathes in repositories: %s\n", setting.RepoRootPath)
+	if err := walkDir(setting.RepoRootPath, "", execPath, 0); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+	fmt.Println("Fix position finished!")
 }