add ssh supports(unfinished)

serve.go

@@ -0,0 +1,164 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/codegangsta/cli"
+	"github.com/gogits/gogs/models"
+	"github.com/gogits/gogs/utils/log"
+)
+
+var (
+	COMMANDS_READONLY = map[string]int{
+		"git-upload-pack": models.AU_WRITABLE,
+		"git upload-pack": models.AU_WRITABLE,
+	}
+
+	COMMANDS_WRITE = map[string]int{
+		"git-receive-pack": models.AU_READABLE,
+		"git receive-pack": models.AU_READABLE,
+	}
+)
+
+var CmdServ = cli.Command{
+	Name:  "serv",
+	Usage: "just run",
+	Description: `
+gogs serv`,
+	Action: runServ,
+	Flags:  []cli.Flag{
+	//cli.BoolFlag{"update, u", "update pakcage(s) and dependencies if any"},
+	//cli.BoolFlag{"verbose, v", "show process details"},
+	},
+}
+
+func In(b string, sl map[string]int) bool {
+	_, e := sl[b]
+	return e
+}
+
+func runServ(*cli.Context) {
+	keys := strings.Split(os.Args[2], "-")
+	if len(keys) != 2 {
+		fmt.Println("auth file format error")
+		return
+	}
+
+	keyId, err := strconv.ParseInt(keys[1], 10, 64)
+	if err != nil {
+		fmt.Println("auth file format error")
+		return
+	}
+	user, err := models.GetUserByKeyId(keyId)
+	if err != nil {
+		fmt.Println("You have no right to access")
+		return
+	}
+
+	cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
+	if cmd == "" {
+		fmt.Printf("Hi %s! You've successfully authenticated, but Gogits does not provide shell access.\n", user.Name)
+		return
+	}
+
+	f, _ := os.Create("test2.log")
+	f.WriteString(cmd)
+	f.Close()
+
+	log.Info("cmd is %s", cmd)
+
+	verb, args := parseCmd(cmd)
+	rr := strings.SplitN(strings.Trim(args, "'"), "/", 1)
+	if len(rr) != 2 {
+		fmt.Printf("Unavilable repository")
+		return
+	}
+	repoName := rr[1]
+	if strings.HasSuffix(repoName, ".git") {
+		repoName = repoName[:len(repoName)-4]
+	}
+	isWrite := In(verb, COMMANDS_WRITE)
+	isRead := In(verb, COMMANDS_READONLY)
+	switch {
+	case isWrite:
+		has, err := models.HasAccess(user.Name, repoName, COMMANDS_WRITE[verb])
+		if err != nil {
+			fmt.Println("Inernel error")
+			return
+		}
+		if !has {
+			fmt.Println("You have no right to access this repository")
+			return
+		}
+	case isRead:
+		has, err := models.HasAccess(user.Name, repoName, COMMANDS_READONLY[verb])
+		if err != nil {
+			fmt.Println("Inernel error")
+			return
+		}
+		if !has {
+			has, err = models.HasAccess(user.Name, repoName, COMMANDS_WRITE[verb])
+			if err != nil {
+				fmt.Println("Inernel error")
+				return
+			}
+		}
+		if !has {
+			fmt.Println("You have no right to access this repository")
+			return
+		}
+	default:
+		fmt.Println("Unknown command")
+		return
+	}
+
+	isExist, err := models.IsRepositoryExist(user, repoName)
+	if err != nil {
+		fmt.Println("Inernel error")
+		return
+	}
+
+	if !isExist {
+		if isRead {
+			fmt.Println("Repository is not exist")
+			return
+		} else if isWrite {
+			_, err := models.CreateRepository(user, repoName)
+			if err != nil {
+				fmt.Println("Create repository failed")
+				return
+			}
+		}
+	}
+
+	fullPath := filepath.Join(models.RepoRootPath, user.Name, repoName+".git")
+	newcmd := fmt.Sprintf("%s '%s'", verb, fullPath)
+	fmt.Println(newcmd)
+	gitcmd := exec.Command("git", "shell", "-c", newcmd)
+	gitcmd.Stdout = os.Stdout
+	gitcmd.Stderr = os.Stderr
+
+	err = gitcmd.Run()
+	if err != nil {
+		log.Error("execute command error: %s", err)
+	}
+}
+
+func parseCmd(cmd string) (string, string) {
+	ss := strings.SplitN(cmd, " ", 1)
+	if len(ss) != 2 {
+		return "", ""
+	}
+	verb, args := ss[0], ss[1]
+	if verb == "git" {
+		ss = strings.SplitN(args, " ", 1)
+		args = ss[1]
+		verb = fmt.Sprintf("%s %s", verb, ss[0])
+	}
+	return verb, args
+}