Leftovers

internal/tracker/magnet.go

@@ -3,6 +3,8 @@ package tracker
 import (
 	"context"
 	"fmt"
+	"net/url"
+	"strings"
 	"time"
 
 	"github.com/anacrolix/torrent"
@@ -11,6 +13,18 @@ import (
 	"github.com/rs/zerolog/log"
 )
 
+func ExtractInfoHash(magnetURI string) string {
+	u, err := url.Parse(magnetURI)
+	if err != nil {
+		return ""
+	}
+	xt := u.Query().Get("xt")
+	if strings.HasPrefix(xt, "urn:btih:") {
+		return strings.ToLower(xt[len("urn:btih:"):])
+	}
+	return ""
+}
+
 type ResolveResult struct {
 	Data             []byte
 	ConnectedSeeders int