bench-forgejo/cmd/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 cmd
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import (
"fmt"
"os"
"os/exec"
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"path/filepath"
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"strings"
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"time"
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"github.com/Unknwon/com"
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"github.com/codegangsta/cli"
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"github.com/gogits/gogs/models"
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"github.com/gogits/gogs/modules/log"
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"github.com/gogits/gogs/modules/setting"
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"github.com/gogits/gogs/modules/uuid"
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)
var CmdServ = cli.Command{
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Name: "serv",
Usage: "This command should only be called by SSH shell",
Description: `Serv provide access auth for repositories`,
Action: runServ,
Flags: []cli.Flag{
cli.StringFlag{"config, c", "custom/conf/app.ini", "Custom configuration file path", ""},
},
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}
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func setup(logPath string) {
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setting.NewConfigContext()
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log.NewGitLogger(filepath.Join(setting.LogRootPath, logPath))
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if setting.DisableSSH {
println("Gogs: SSH has been disabled")
os.Exit(1)
}
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models.LoadModelsConfig()
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if setting.UseSQLite3 {
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workDir, _ := setting.WorkDir()
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os.Chdir(workDir)
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}
models.SetEngine()
}
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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])
}
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return verb, strings.Replace(args, "'/", "'", 1)
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}
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var (
COMMANDS_READONLY = map[string]models.AccessMode{
"git-upload-pack": models.ACCESS_MODE_WRITE,
"git upload-pack": models.ACCESS_MODE_WRITE,
"git-upload-archive": models.ACCESS_MODE_WRITE,
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}
COMMANDS_WRITE = map[string]models.AccessMode{
"git-receive-pack": models.ACCESS_MODE_READ,
"git receive-pack": models.ACCESS_MODE_READ,
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}
)
func In(b string, sl map[string]models.AccessMode) bool {
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_, e := sl[b]
return e
}
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func runServ(c *cli.Context) {
if c.IsSet("config") {
setting.CustomConf = c.String("config")
}
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setup("serv.log")
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if len(c.Args()) < 1 {
log.GitLogger.Fatal(2, "Not enough arguments")
}
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keys := strings.Split(c.Args()[0], "-")
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if len(keys) != 2 {
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println("Gogs: auth file format error")
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log.GitLogger.Fatal(2, "Invalid auth file format: %s", os.Args[2])
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}
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keyId, err := com.StrTo(keys[1]).Int64()
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if err != nil {
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println("Gogs: auth file format error")
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log.GitLogger.Fatal(2, "Invalid auth file format: %v", err)
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}
user, err := models.GetUserByKeyId(keyId)
if err != nil {
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if err == models.ErrUserNotKeyOwner {
println("Gogs: you are not the owner of SSH key")
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log.GitLogger.Fatal(2, "Invalid owner of SSH key: %d", keyId)
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}
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println("Gogs: internal error:", err.Error())
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log.GitLogger.Fatal(2, "Fail to get user by key ID(%d): %v", keyId, err)
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}
cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
if cmd == "" {
println("Hi", user.Name, "! You've successfully authenticated, but Gogs does not provide shell access.")
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println("If this is what you do not expect, please log in with password and setup Gogs under another user.")
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return
}
verb, args := parseCmd(cmd)
repoPath := strings.Trim(args, "'")
rr := strings.SplitN(repoPath, "/", 2)
if len(rr) != 2 {
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println("Gogs: unavailable repository", args)
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log.GitLogger.Fatal(2, "Unavailable repository: %v", args)
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}
repoUserName := rr[0]
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repoName := strings.TrimSuffix(rr[1], ".git")
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isWrite := In(verb, COMMANDS_WRITE)
isRead := In(verb, COMMANDS_READONLY)
repoUser, err := models.GetUserByName(repoUserName)
if err != nil {
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if err == models.ErrUserNotExist {
println("Gogs: given repository owner are not registered")
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log.GitLogger.Fatal(2, "Unregistered owner: %s", repoUserName)
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}
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println("Gogs: internal error:", err.Error())
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log.GitLogger.Fatal(2, "Fail to get repository owner(%s): %v", repoUserName, err)
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}
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// Access check.
repo, err := models.GetRepositoryByName(repoUser.Id, repoName)
if err != nil {
if err == models.ErrRepoNotExist {
println("Gogs: given repository does not exist")
log.GitLogger.Fatal(2, "Repository does not exist: %s/%s", repoUser.Name, repoName)
}
println("Gogs: internal error:", err.Error())
log.GitLogger.Fatal(2, "Fail to get repository: %v", err)
}
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switch {
case isWrite:
has, err := models.HasAccess(user, repo, models.ACCESS_MODE_WRITE)
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if err != nil {
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println("Gogs: internal error:", err.Error())
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log.GitLogger.Fatal(2, "Fail to check write access:", err)
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} else if !has {
println("You have no right to write this repository")
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log.GitLogger.Fatal(2, "User %s has no right to write repository %s", user.Name, repoPath)
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}
if repo.IsMirror {
println("You can't write to a mirror repository")
log.GitLogger.Fatal(2, "User %s tried to write to a mirror repository %s", user.Name, repoPath)
}
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case isRead:
if !repo.IsPrivate {
break
}
has, err := models.HasAccess(user, repo, models.ACCESS_MODE_READ)
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if err != nil {
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println("Gogs: internal error:", err.Error())
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log.GitLogger.Fatal(2, "Fail to check read access:", err)
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} else if !has {
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println("You have no right to access this repository")
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log.GitLogger.Fatal(2, "User %s has no right to read repository %s", user.Name, repoPath)
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}
default:
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println("Unknown command: " + cmd)
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return
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}
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uuid := uuid.NewV4().String()
os.Setenv("uuid", uuid)
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var gitcmd *exec.Cmd
verbs := strings.Split(verb, " ")
if len(verbs) == 2 {
gitcmd = exec.Command(verbs[0], verbs[1], repoPath)
} else {
gitcmd = exec.Command(verb, repoPath)
}
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gitcmd.Dir = setting.RepoRootPath
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gitcmd.Stdout = os.Stdout
gitcmd.Stdin = os.Stdin
gitcmd.Stderr = os.Stderr
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if err = gitcmd.Run(); err != nil {
println("Gogs: internal error:", err.Error())
log.GitLogger.Fatal(2, "Fail to execute git command: %v", err)
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}
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if isWrite {
tasks, err := models.GetUpdateTasksByUuid(uuid)
if err != nil {
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log.GitLogger.Fatal(2, "GetUpdateTasksByUuid: %v", err)
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}
for _, task := range tasks {
err = models.Update(task.RefName, task.OldCommitId, task.NewCommitId,
user.Name, repoUserName, repoName, user.Id)
if err != nil {
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log.GitLogger.Error(2, "Fail to update: %v", err)
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}
}
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if err = models.DelUpdateTasksByUuid(uuid); err != nil {
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log.GitLogger.Fatal(2, "DelUpdateTasksByUuid: %v", err)
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}
}
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// Update key activity.
key, err := models.GetPublicKeyById(keyId)
if err != nil {
log.GitLogger.Fatal(2, "GetPublicKeyById: %v", err)
}
key.Updated = time.Now()
if err = models.UpdatePublicKey(key); err != nil {
log.GitLogger.Fatal(2, "UpdatePublicKey: %v", err)
}
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}