From 197d87fe7bea10cf7be2b1d3dcdf3f71c20ca10a Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Mon, 17 Feb 2025 07:17:02 +0800
Subject: ssh_handle_upload_pack: Use system git-upload-pack

---
 ssh_handle_upload_pack.go | 52 +++++++++++++++++------------------------------
 1 file changed, 19 insertions(+), 33 deletions(-)

diff --git a/ssh_handle_upload_pack.go b/ssh_handle_upload_pack.go
index 8281cbd..3cc3bb2 100644
--- a/ssh_handle_upload_pack.go
+++ b/ssh_handle_upload_pack.go
@@ -1,11 +1,10 @@
 package main
 
 import (
+	"fmt"
+	"os/exec"
+
 	glider_ssh "github.com/gliderlabs/ssh"
-	"github.com/go-git/go-billy/v5/osfs"
-	"github.com/go-git/go-git/v5/plumbing/protocol/packp"
-	"github.com/go-git/go-git/v5/plumbing/transport"
-	"github.com/go-git/go-git/v5/plumbing/transport/server"
 )
 
 func ssh_handle_upload_pack(session glider_ssh.Session, pubkey string, repo_identifier string) (err error) {
@@ -13,37 +12,24 @@ func ssh_handle_upload_pack(session glider_ssh.Session, pubkey string, repo_iden
 	if err != nil {
 		return err
 	}
-	endpoint, err := transport.NewEndpoint("/")
-	if err != nil {
-		return err
-	}
-	billy_fs := osfs.New(repo_path)
-	fs_loader := server.NewFilesystemLoader(billy_fs)
-	transport := server.NewServer(fs_loader)
-	upload_pack_session, err := transport.NewUploadPackSession(endpoint, nil)
-	if err != nil {
-		return err
-	}
-	advertised_references, err := upload_pack_session.AdvertisedReferencesContext(session.Context())
-	if err != nil {
-		return err
-	}
-	err = advertised_references.Encode(session)
-	if err != nil {
-		return err
-	}
-	reference_update_request := packp.NewUploadPackRequest()
-	err = reference_update_request.Decode(session)
-	if err != nil {
-		return err
-	}
-	report_status, err := upload_pack_session.UploadPack(session.Context(), reference_update_request)
+
+	proc := exec.CommandContext(session.Context(), "git-upload-pack", repo_path)
+	proc.Stdin = session
+	proc.Stdout = session
+	proc.Stderr = session.Stderr()
+
+	err = proc.Start()
 	if err != nil {
+		fmt.Fprintln(session.Stderr(), "Error while starting process:", err)
 		return err
 	}
-	err = report_status.Encode(session)
-	if err != nil {
-		return err
+
+	err = proc.Wait()
+	if exitError, ok := err.(*exec.ExitError); ok {
+		fmt.Fprintln(session.Stderr(), "Process exited with error", exitError.ExitCode())
+	} else if err != nil {
+		fmt.Fprintln(session.Stderr(), "Error while waiting for process:", err)
 	}
-	return nil
+
+	return err
 }
-- 
cgit v1.2.3