2014-04-16 14:07:07 +05:30
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// Copyright 2014 The Gogs Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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2014-04-10 23:50:58 +05:30
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package repo
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/go-martini/martini"
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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/middleware"
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"github.com/gogits/gogs/modules/setting"
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)
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func Http(ctx *middleware.Context, params martini.Params) {
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username := params["username"]
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reponame := params["reponame"]
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if strings.HasSuffix(reponame, ".git") {
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reponame = reponame[:len(reponame)-4]
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}
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var isPull bool
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service := ctx.Query("service")
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if service == "git-receive-pack" ||
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strings.HasSuffix(ctx.Req.URL.Path, "git-receive-pack") {
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isPull = false
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} else if service == "git-upload-pack" ||
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strings.HasSuffix(ctx.Req.URL.Path, "git-upload-pack") {
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isPull = true
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} else {
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isPull = (ctx.Req.Method == "GET")
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}
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repoUser, err := models.GetUserByName(username)
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if err != nil {
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if err == models.ErrUserNotExist {
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ctx.Handle(404, "repo.Http(GetUserByName)", nil)
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} else {
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ctx.Handle(500, "repo.Http(GetUserByName)", nil)
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}
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return
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}
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repo, err := models.GetRepositoryByName(repoUser.Id, reponame)
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if err != nil {
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if err == models.ErrRepoNotExist {
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ctx.Handle(404, "repo.Http(GetRepositoryByName)", nil)
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} else {
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ctx.Handle(500, "repo.Http(GetRepositoryByName)", nil)
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}
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return
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}
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// only public pull don't need auth
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isPublicPull := !repo.IsPrivate && isPull
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var askAuth = !isPublicPull || setting.Service.RequireSignInView
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var authUser *models.User
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var authUsername, passwd string
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// check access
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if askAuth {
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baHead := ctx.Req.Header.Get("Authorization")
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if baHead == "" {
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// ask auth
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authRequired(ctx)
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return
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}
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auths := strings.Fields(baHead)
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// currently check basic auth
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// TODO: support digit auth
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if len(auths) != 2 || auths[0] != "Basic" {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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}
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authUsername, passwd, err = basicDecode(auths[1])
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if err != nil {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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}
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authUser, err = models.GetUserByName(authUsername)
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if err != nil {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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}
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newUser := &models.User{Passwd: passwd, Salt: authUser.Salt}
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newUser.EncodePasswd()
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if authUser.Passwd != newUser.Passwd {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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}
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2014-04-16 14:15:02 +05:30
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if !isPublicPull {
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var tp = models.AU_WRITABLE
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if isPull {
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tp = models.AU_READABLE
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}
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2014-04-16 14:15:02 +05:30
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has, err := models.HasAccess(authUsername, username+"/"+reponame, tp)
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if err != nil {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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} else if !has {
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if tp == models.AU_READABLE {
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has, err = models.HasAccess(authUsername, username+"/"+reponame, models.AU_WRITABLE)
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if err != nil || !has {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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}
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} else {
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ctx.Handle(401, "no basic auth and digit auth", nil)
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return
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}
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}
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}
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}
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2014-05-26 05:41:25 +05:30
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config := Config{setting.RepoRootPath, "git", true, true, func(rpc string, input []byte) {
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if rpc == "receive-pack" {
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firstLine := bytes.IndexRune(input, '\000')
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if firstLine > -1 {
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fields := strings.Fields(string(input[:firstLine]))
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if len(fields) == 3 {
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oldCommitId := fields[0][4:]
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newCommitId := fields[1]
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refName := fields[2]
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2014-05-03 11:07:49 +05:30
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models.Update(refName, oldCommitId, newCommitId, authUsername, username, reponame, authUser.Id)
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}
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}
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}
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}}
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handler := HttpBackend(&config)
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handler(ctx.ResponseWriter, ctx.Req)
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}
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type route struct {
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cr *regexp.Regexp
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method string
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handler func(handler)
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}
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type Config struct {
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ReposRoot string
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GitBinPath string
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UploadPack bool
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ReceivePack bool
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OnSucceed func(rpc string, input []byte)
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}
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type handler struct {
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*Config
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w http.ResponseWriter
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r *http.Request
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Dir string
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File string
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}
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var routes = []route{
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{regexp.MustCompile("(.*?)/git-upload-pack$"), "POST", serviceUploadPack},
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{regexp.MustCompile("(.*?)/git-receive-pack$"), "POST", serviceReceivePack},
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{regexp.MustCompile("(.*?)/info/refs$"), "GET", getInfoRefs},
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{regexp.MustCompile("(.*?)/HEAD$"), "GET", getTextFile},
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{regexp.MustCompile("(.*?)/objects/info/alternates$"), "GET", getTextFile},
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{regexp.MustCompile("(.*?)/objects/info/http-alternates$"), "GET", getTextFile},
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{regexp.MustCompile("(.*?)/objects/info/packs$"), "GET", getInfoPacks},
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{regexp.MustCompile("(.*?)/objects/info/[^/]*$"), "GET", getTextFile},
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{regexp.MustCompile("(.*?)/objects/[0-9a-f]{2}/[0-9a-f]{38}$"), "GET", getLooseObject},
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{regexp.MustCompile("(.*?)/objects/pack/pack-[0-9a-f]{40}\\.pack$"), "GET", getPackFile},
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{regexp.MustCompile("(.*?)/objects/pack/pack-[0-9a-f]{40}\\.idx$"), "GET", getIdxFile},
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}
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// Request handling function
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func HttpBackend(config *Config) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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for _, route := range routes {
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if m := route.cr.FindStringSubmatch(r.URL.Path); m != nil {
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if route.method != r.Method {
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renderMethodNotAllowed(w, r)
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return
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}
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file := strings.Replace(r.URL.Path, m[1]+"/", "", 1)
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dir, err := getGitDir(config, m[1])
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if err != nil {
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log.GitLogger.Error(err.Error())
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renderNotFound(w)
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return
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}
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hr := handler{config, w, r, dir, file}
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route.handler(hr)
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return
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}
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}
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2014-06-28 08:36:07 +05:30
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2014-04-10 23:50:58 +05:30
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renderNotFound(w)
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return
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}
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}
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// Actual command handling functions
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func serviceUploadPack(hr handler) {
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serviceRpc("upload-pack", hr)
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}
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func serviceReceivePack(hr handler) {
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serviceRpc("receive-pack", hr)
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}
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func serviceRpc(rpc string, hr handler) {
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w, r, dir := hr.w, hr.r, hr.Dir
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access := hasAccess(r, hr.Config, dir, rpc, true)
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if access == false {
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renderNoAccess(w)
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return
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}
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w.Header().Set("Content-Type", fmt.Sprintf("application/x-git-%s-result", rpc))
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w.WriteHeader(http.StatusOK)
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2014-06-28 08:36:07 +05:30
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input, _ := ioutil.ReadAll(r.Body)
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br := bytes.NewReader(input)
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2014-04-10 23:50:58 +05:30
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args := []string{rpc, "--stateless-rpc", dir}
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cmd := exec.Command(hr.Config.GitBinPath, args...)
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cmd.Dir = dir
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cmd.Stdout = w
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cmd.Stdin = br
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2014-06-28 08:36:07 +05:30
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err := cmd.Run()
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if err != nil {
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log.GitLogger.Error(err.Error())
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return
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}
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if hr.Config.OnSucceed != nil {
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hr.Config.OnSucceed(rpc, input)
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}
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}
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func getInfoRefs(hr handler) {
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w, r, dir := hr.w, hr.r, hr.Dir
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serviceName := getServiceType(r)
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access := hasAccess(r, hr.Config, dir, serviceName, false)
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if access {
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args := []string{serviceName, "--stateless-rpc", "--advertise-refs", "."}
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refs := gitCommand(hr.Config.GitBinPath, dir, args...)
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hdrNocache(w)
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w.Header().Set("Content-Type", fmt.Sprintf("application/x-git-%s-advertisement", serviceName))
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w.WriteHeader(http.StatusOK)
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w.Write(packetWrite("# service=git-" + serviceName + "\n"))
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w.Write(packetFlush())
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w.Write(refs)
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} else {
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updateServerInfo(hr.Config.GitBinPath, dir)
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hdrNocache(w)
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sendFile("text/plain; charset=utf-8", hr)
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}
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}
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func getInfoPacks(hr handler) {
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hdrCacheForever(hr.w)
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sendFile("text/plain; charset=utf-8", hr)
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}
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func getLooseObject(hr handler) {
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hdrCacheForever(hr.w)
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sendFile("application/x-git-loose-object", hr)
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}
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func getPackFile(hr handler) {
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hdrCacheForever(hr.w)
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sendFile("application/x-git-packed-objects", hr)
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}
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func getIdxFile(hr handler) {
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hdrCacheForever(hr.w)
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sendFile("application/x-git-packed-objects-toc", hr)
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}
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func getTextFile(hr handler) {
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hdrNocache(hr.w)
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sendFile("text/plain", hr)
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}
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// Logic helping functions
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func sendFile(contentType string, hr handler) {
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w, r := hr.w, hr.r
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reqFile := path.Join(hr.Dir, hr.File)
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//fmt.Println("sendFile:", reqFile)
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f, err := os.Stat(reqFile)
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if os.IsNotExist(err) {
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renderNotFound(w)
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return
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}
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w.Header().Set("Content-Type", contentType)
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w.Header().Set("Content-Length", fmt.Sprintf("%d", f.Size()))
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w.Header().Set("Last-Modified", f.ModTime().Format(http.TimeFormat))
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http.ServeFile(w, r, reqFile)
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}
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2014-04-14 20:52:00 +05:30
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func getGitDir(config *Config, fPath string) (string, error) {
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2014-04-10 23:50:58 +05:30
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root := config.ReposRoot
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if root == "" {
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cwd, err := os.Getwd()
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if err != nil {
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2014-06-20 10:44:54 +05:30
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log.GitLogger.Error(err.Error())
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2014-04-10 23:50:58 +05:30
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return "", err
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}
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root = cwd
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}
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2014-04-14 20:52:00 +05:30
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if !strings.HasSuffix(fPath, ".git") {
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fPath = fPath + ".git"
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}
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f := filepath.Join(root, fPath)
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if _, err := os.Stat(f); os.IsNotExist(err) {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
|
|
|
|
return f, nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func getServiceType(r *http.Request) string {
|
|
|
|
serviceType := r.FormValue("service")
|
|
|
|
|
|
|
|
if s := strings.HasPrefix(serviceType, "git-"); !s {
|
|
|
|
return ""
|
|
|
|
}
|
|
|
|
|
|
|
|
return strings.Replace(serviceType, "git-", "", 1)
|
|
|
|
}
|
|
|
|
|
|
|
|
func hasAccess(r *http.Request, config *Config, dir string, rpc string, checkContentType bool) bool {
|
|
|
|
if checkContentType {
|
|
|
|
if r.Header.Get("Content-Type") != fmt.Sprintf("application/x-git-%s-request", rpc) {
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if !(rpc == "upload-pack" || rpc == "receive-pack") {
|
|
|
|
return false
|
|
|
|
}
|
|
|
|
if rpc == "receive-pack" {
|
|
|
|
return config.ReceivePack
|
|
|
|
}
|
|
|
|
if rpc == "upload-pack" {
|
|
|
|
return config.UploadPack
|
|
|
|
}
|
|
|
|
|
|
|
|
return getConfigSetting(config.GitBinPath, rpc, dir)
|
|
|
|
}
|
|
|
|
|
|
|
|
func getConfigSetting(gitBinPath, serviceName string, dir string) bool {
|
|
|
|
serviceName = strings.Replace(serviceName, "-", "", -1)
|
|
|
|
setting := getGitConfig(gitBinPath, "http."+serviceName, dir)
|
|
|
|
|
|
|
|
if serviceName == "uploadpack" {
|
|
|
|
return setting != "false"
|
|
|
|
}
|
|
|
|
|
|
|
|
return setting == "true"
|
|
|
|
}
|
|
|
|
|
|
|
|
func getGitConfig(gitBinPath, configName string, dir string) string {
|
|
|
|
args := []string{"config", configName}
|
|
|
|
out := string(gitCommand(gitBinPath, dir, args...))
|
|
|
|
return out[0 : len(out)-1]
|
|
|
|
}
|
|
|
|
|
|
|
|
func updateServerInfo(gitBinPath, dir string) []byte {
|
|
|
|
args := []string{"update-server-info"}
|
|
|
|
return gitCommand(gitBinPath, dir, args...)
|
|
|
|
}
|
|
|
|
|
|
|
|
func gitCommand(gitBinPath, dir string, args ...string) []byte {
|
|
|
|
command := exec.Command(gitBinPath, args...)
|
|
|
|
command.Dir = dir
|
|
|
|
out, err := command.Output()
|
|
|
|
|
|
|
|
if err != nil {
|
2014-06-20 10:44:54 +05:30
|
|
|
log.GitLogger.Error(err.Error())
|
2014-04-10 23:50:58 +05:30
|
|
|
}
|
|
|
|
|
|
|
|
return out
|
|
|
|
}
|
|
|
|
|
|
|
|
// HTTP error response handling functions
|
|
|
|
|
|
|
|
func renderMethodNotAllowed(w http.ResponseWriter, r *http.Request) {
|
|
|
|
if r.Proto == "HTTP/1.1" {
|
|
|
|
w.WriteHeader(http.StatusMethodNotAllowed)
|
|
|
|
w.Write([]byte("Method Not Allowed"))
|
|
|
|
} else {
|
|
|
|
w.WriteHeader(http.StatusBadRequest)
|
|
|
|
w.Write([]byte("Bad Request"))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
func renderNotFound(w http.ResponseWriter) {
|
|
|
|
w.WriteHeader(http.StatusNotFound)
|
|
|
|
w.Write([]byte("Not Found"))
|
|
|
|
}
|
|
|
|
|
|
|
|
func renderNoAccess(w http.ResponseWriter) {
|
|
|
|
w.WriteHeader(http.StatusForbidden)
|
|
|
|
w.Write([]byte("Forbidden"))
|
|
|
|
}
|
|
|
|
|
|
|
|
// Packet-line handling function
|
|
|
|
|
|
|
|
func packetFlush() []byte {
|
|
|
|
return []byte("0000")
|
|
|
|
}
|
|
|
|
|
|
|
|
func packetWrite(str string) []byte {
|
|
|
|
s := strconv.FormatInt(int64(len(str)+4), 16)
|
|
|
|
|
|
|
|
if len(s)%4 != 0 {
|
|
|
|
s = strings.Repeat("0", 4-len(s)%4) + s
|
|
|
|
}
|
|
|
|
|
|
|
|
return []byte(s + str)
|
|
|
|
}
|
|
|
|
|
|
|
|
// Header writing functions
|
|
|
|
|
|
|
|
func hdrNocache(w http.ResponseWriter) {
|
|
|
|
w.Header().Set("Expires", "Fri, 01 Jan 1980 00:00:00 GMT")
|
|
|
|
w.Header().Set("Pragma", "no-cache")
|
|
|
|
w.Header().Set("Cache-Control", "no-cache, max-age=0, must-revalidate")
|
|
|
|
}
|
|
|
|
|
|
|
|
func hdrCacheForever(w http.ResponseWriter) {
|
|
|
|
now := time.Now().Unix()
|
|
|
|
expires := now + 31536000
|
|
|
|
w.Header().Set("Date", fmt.Sprintf("%d", now))
|
|
|
|
w.Header().Set("Expires", fmt.Sprintf("%d", expires))
|
|
|
|
w.Header().Set("Cache-Control", "public, max-age=31536000")
|
|
|
|
}
|