package grasp
import (
"fmt"
"net/http"
"regexp"
"strings"
"fiatjaf.com/nostr"
"fiatjaf.com/nostr/nip19"
)
var asciiPattern = regexp.MustCompile(`^[\w-.]+$`)
// handleGitRequest validates .git suffix and decodes npub, then calls the handler
func (gs *GraspServer) handleGitRequest(
w http.ResponseWriter,
r *http.Request,
base http.Handler,
handler func(http.ResponseWriter,
*http.Request,
nostr.PubKey,
string,
),
) {
npub := r.PathValue("npub")
repoWithGit := r.PathValue("repo")
// validate .git suffix
if !strings.HasSuffix(repoWithGit, ".git") {
base.ServeHTTP(w, r)
return
}
repoName := strings.TrimSuffix(repoWithGit, ".git")
// validate repo name
if !asciiPattern.MatchString(repoName) {
http.Error(w, "invalid repository name", 400)
return
}
// decode npub to pubkey
_, value, err := nip19.Decode(npub)
if err != nil {
http.Error(w, "invalid npub", 400)
return
}
pk, ok := value.(nostr.PubKey)
if !ok {
http.Error(w, "invalid npub", 400)
return
}
handler(w, r, pk, repoName)
}
// serveRepoPage serves a webpage for the repository
func (gs *GraspServer) serveRepoPage(w http.ResponseWriter, r *http.Request, npub, repoName string) {
w.Header().Set("Content-Type", "text/html")
html := fmt.Sprintf(`
%s/%s - NIP-34 Git Repository
Repository: %s/%s
This is a NIP-34 git repository served over Nostr.
Clone this repository
Use a git-nostr client to clone:
git clone %s/%s/%s.git
Browse
Use a git-nostr web client or Nostr client to browse this repository.
`, npub, repoName, npub, repoName, r.Host, npub, repoName)
fmt.Fprint(w, html)
}