1 files changed, 108 insertions, 0 deletions
diff --git a/routes/git.go b/routes/git.go
new file mode 100644
index 0000000..1a5e035
--- /dev/null
+++ b/routes/git.go
@@ -0,0 +1,108 @@
+package routes
+
+import (
+	"errors"
+	"log"
+	"net/http"
+	"path/filepath"
+
+	"github.com/alexedwards/flow"
+	"github.com/go-git/go-billy/v5/osfs"
+	"github.com/go-git/go-git/v5/plumbing/format/pktline"
+	"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 (d *deps) InfoRefs(w http.ResponseWriter, r *http.Request) {
+	name := flow.Param(r.Context(), "name")
+	name = filepath.Clean(name)
+
+	repo := filepath.Join(d.c.Repo.ScanPath, name)
+
+	w.Header().Set("content-type", "application/x-git-upload-pack-advertisement")
+
+	ep, err := transport.NewEndpoint("/")
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+
+	billyfs := osfs.New(repo)
+	loader := server.NewFilesystemLoader(billyfs)
+	srv := server.NewServer(loader)
+	session, err := srv.NewUploadPackSession(ep, nil)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+
+	ar, err := session.AdvertisedReferencesContext(r.Context())
+	if errors.Is(err, transport.ErrRepositoryNotFound) {
+		http.Error(w, err.Error(), 404)
+		return
+	} else if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	ar.Prefix = [][]byte{
+		[]byte("# service=git-upload-pack"),
+		pktline.Flush,
+	}
+
+	if err = ar.Encode(w); err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+}
+
+func (d *deps) UploadPack(w http.ResponseWriter, r *http.Request) {
+	name := flow.Param(r.Context(), "name")
+	name = filepath.Clean(name)
+
+	repo := filepath.Join(d.c.Repo.ScanPath, name)
+
+	w.Header().Set("content-type", "application/x-git-upload-pack-result")
+
+	upr := packp.NewUploadPackRequest()
+	err := upr.Decode(r.Body)
+	if err != nil {
+		http.Error(w, err.Error(), 400)
+		log.Printf("git: %s", err)
+		return
+	}
+
+	ep, err := transport.NewEndpoint("/")
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+
+	billyfs := osfs.New(repo)
+	loader := server.NewFilesystemLoader(billyfs)
+	svr := server.NewServer(loader)
+	session, err := svr.NewUploadPackSession(ep, nil)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+
+	res, err := session.UploadPack(r.Context(), upr)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+
+	if err = res.Encode(w); err != nil {
+		http.Error(w, err.Error(), 500)
+		log.Printf("git: %s", err)
+		return
+	}
+}