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gitea/serve.go

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// Copyright 2014 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
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package main
import (
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//"container/list"
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"fmt"
"os"
"os/exec"
"path"
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"strconv"
"strings"
"github.com/codegangsta/cli"
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"github.com/gogits/gogs/modules/log"
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//"github.com/gogits/git"
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"github.com/gogits/gogs/models"
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"github.com/gogits/gogs/modules/base"
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)
var (
COMMANDS_READONLY = map[string]int{
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"git-upload-pack": models.AU_WRITABLE,
"git upload-pack": models.AU_WRITABLE,
"git-upload-archive": models.AU_WRITABLE,
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}
COMMANDS_WRITE = map[string]int{
"git-receive-pack": models.AU_READABLE,
"git receive-pack": models.AU_READABLE,
}
)
var CmdServ = cli.Command{
Name: "serv",
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Usage: "This command just should be called by ssh shell",
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Description: `
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gogs serv provide access auth for repositories`,
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Action: runServ,
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Flags: []cli.Flag{},
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}
func newLogger(execDir string) {
level := "0"
logPath := execDir + "/log/serv.log"
os.MkdirAll(path.Dir(logPath), os.ModePerm)
log.NewLogger(10000, "file", fmt.Sprintf(`{"level":%s,"filename":"%s"}`, level, logPath))
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log.Trace("start logging...")
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}
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func parseCmd(cmd string) (string, string) {
ss := strings.SplitN(cmd, " ", 2)
if len(ss) != 2 {
return "", ""
}
verb, args := ss[0], ss[1]
if verb == "git" {
ss = strings.SplitN(args, " ", 2)
args = ss[1]
verb = fmt.Sprintf("%s %s", verb, ss[0])
}
return verb, args
}
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func In(b string, sl map[string]int) bool {
_, e := sl[b]
return e
}
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func runServ(k *cli.Context) {
execDir, _ := base.ExecDir()
newLogger(execDir)
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log.Trace("new serv request " + log.Mode + ":" + log.Config)
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base.NewConfigContext()
models.LoadModelsConfig()
models.NewEngine()
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keys := strings.Split(os.Args[2], "-")
if len(keys) != 2 {
fmt.Println("auth file format error")
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log.Error("auth file format error")
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return
}
keyId, err := strconv.ParseInt(keys[1], 10, 64)
if err != nil {
fmt.Println("auth file format error")
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log.Error("auth file format error")
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return
}
user, err := models.GetUserByKeyId(keyId)
if err != nil {
fmt.Println("You have no right to access")
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log.Error("You have no right to access")
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return
}
cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
if cmd == "" {
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println("Hi", user.Name, "! You've successfully authenticated, but Gogs does not provide shell access.")
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return
}
verb, args := parseCmd(cmd)
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rRepo := strings.Trim(args, "'")
rr := strings.SplitN(rRepo, "/", 2)
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if len(rr) != 2 {
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println("Unavilable repository", args)
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log.Error("Unavilable repository %v", args)
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return
}
repoName := rr[1]
if strings.HasSuffix(repoName, ".git") {
repoName = repoName[:len(repoName)-4]
}
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isWrite := In(verb, COMMANDS_WRITE)
isRead := In(verb, COMMANDS_READONLY)
/*//repo, err := models.GetRepositoryByName(user.Id, repoName)
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//var isExist bool = true
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if err != nil {
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if err == models.ErrRepoNotExist {
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//isExist = false
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if isRead {
println("Repository", user.Name+"/"+repoName, "is not exist")
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log.Error("Repository " + user.Name + "/" + repoName + " is not exist")
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return
}
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} else {
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println("Get repository error:", err)
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log.Error("Get repository error: " + err.Error())
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return
}
}*/
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// access check
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switch {
case isWrite:
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has, err := models.HasAccess(user.Name, repoName, models.AU_WRITABLE)
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if err != nil {
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println("Inernel error:", err)
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log.Error(err.Error())
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return
}
if !has {
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println("You have no right to write this repository")
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log.Error("You have no right to access this repository")
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return
}
case isRead:
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has, err := models.HasAccess(user.Name, repoName, models.AU_READABLE)
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if err != nil {
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println("Inernel error")
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log.Error(err.Error())
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return
}
if !has {
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has, err = models.HasAccess(user.Name, repoName, models.AU_WRITABLE)
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if err != nil {
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println("Inernel error")
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log.Error(err.Error())
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return
}
}
if !has {
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println("You have no right to access this repository")
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log.Error("You have no right to access this repository")
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return
}
default:
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println("Unknown command")
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log.Error("Unknown command")
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return
}
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// for update use
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os.Setenv("userName", user.Name)
os.Setenv("userId", strconv.Itoa(int(user.Id)))
os.Setenv("repoName", repoName)
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gitcmd := exec.Command(verb, rRepo)
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gitcmd.Dir = base.RepoRootPath
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gitcmd.Stdout = os.Stdout
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gitcmd.Stdin = os.Stdin
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gitcmd.Stderr = os.Stderr
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if err = gitcmd.Run(); err != nil {
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println("execute command error:", err.Error())
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log.Error("execute command error: " + err.Error())
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return
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}
}