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Enable cloning via Git Wire Protocol v2 over HTTP #12170

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merged 3 commits into from
Jul 7, 2020
Merged

Enable cloning via Git Wire Protocol v2 over HTTP #12170

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313a181
Enable Git Wire Protocol v2 over HTTP
billiegoose Jul 7, 2020
de0a80a
use RunInDirTimeoutEnv
billiegoose Jul 7, 2020
0acb5cf
pass $HOME environment variable to git upload-pack
billiegoose Jul 7, 2020
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19 changes: 15 additions & 4 deletions routers/repo/http.go
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Original file line number Diff line number Diff line change
Expand Up @@ -483,6 +483,9 @@ var routes = []route{
{regexp.MustCompile(`(.*?)/objects/pack/pack-[0-9a-f]{40}\.idx$`), "GET", getIdxFile},
}

// one or more key=value pairs separated by colons
var safeGitProtocolHeader = regexp.MustCompile(`^[0-9a-zA-Z]+=[0-9a-zA-Z]+(:[0-9a-zA-Z]+=[0-9a-zA-Z]+)*$`)

func getGitConfig(option, dir string) string {
out, err := git.NewCommand("config", option).RunInDir(dir)
if err != nil {
Expand Down Expand Up @@ -553,14 +556,16 @@ func serviceRPC(h serviceHandler, service string) {
// set this for allow pre-receive and post-receive execute
h.environ = append(h.environ, "SSH_ORIGINAL_COMMAND="+service)

if protocol := h.r.Header.Get("Git-Protocol"); protocol != "" && safeGitProtocolHeader.MatchString(protocol) {
h.environ = append(h.environ, "GIT_PROTOCOL="+protocol)
}

ctx, cancel := gocontext.WithCancel(git.DefaultContext)
defer cancel()
var stderr bytes.Buffer
cmd := exec.CommandContext(ctx, git.GitExecutable, service, "--stateless-rpc", h.dir)
cmd.Dir = h.dir
if service == "receive-pack" {
cmd.Env = append(os.Environ(), h.environ...)
}
cmd.Env = append(os.Environ(), h.environ...)
cmd.Stdout = h.w
cmd.Stdin = reqBody
cmd.Stderr = &stderr
Expand Down Expand Up @@ -610,7 +615,13 @@ func getInfoRefs(h serviceHandler) {
h.setHeaderNoCache()
if hasAccess(getServiceType(h.r), h, false) {
service := getServiceType(h.r)
refs, err := git.NewCommand(service, "--stateless-rpc", "--advertise-refs", ".").RunInDirBytes(h.dir)

if protocol := h.r.Header.Get("Git-Protocol"); protocol != "" && safeGitProtocolHeader.MatchString(protocol) {
h.environ = append(h.environ, "GIT_PROTOCOL="+protocol)
}
h.environ = append(os.Environ(), h.environ...)

refs, err := git.NewCommand(service, "--stateless-rpc", "--advertise-refs", ".").RunInDirTimeoutEnv(h.environ, -1, h.dir)
if err != nil {
log.Error(fmt.Sprintf("%v - %s", err, string(refs)))
}
Expand Down