chore: defer to go-trustless-utils for filename check

Author: rvagg

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/ipld/go-codec-dagpb v1.7.0
 	github.com/ipld/go-fixtureplate v0.1.0
 	github.com/ipld/go-ipld-prime v0.21.0
-	github.com/ipld/go-trustless-utils v0.6.0
+	github.com/ipld/go-trustless-utils v0.6.1-0.20251014050816-171c6b23a8c1
 	github.com/ipld/ipld/specs v0.0.0-20231012031213-54d3b21deda4
 	github.com/ipni/go-libipni v0.7.1
 	github.com/ipni/index-provider v0.15.5

go.sum

@@ -210,8 +210,8 @@ github.com/ipld/go-ipld-prime v0.21.0 h1:n4JmcpOlPDIxBcY037SVfpd1G+Sj1nKZah0m6QH
 github.com/ipld/go-ipld-prime v0.21.0/go.mod h1:3RLqy//ERg/y5oShXXdx5YIp50cFGOanyMctpPjsvxQ=
 github.com/ipld/go-ipld-prime/storage/bsadapter v0.0.0-20250821084354-a425e60cd714 h1:cqNk8PEwHnK0vqWln+U/YZhQc9h2NB3KjUjDPZo5Q2s=
 github.com/ipld/go-ipld-prime/storage/bsadapter v0.0.0-20250821084354-a425e60cd714/go.mod h1:ZEUdra3CoqRVRYgAX/jAJO9aZGz6SKtKEG628fHHktY=
-github.com/ipld/go-trustless-utils v0.6.0 h1:Yy9L+HI2AQwlq5EQPr3ZyAKbkBz/BpojqGAvym0s2lA=
-github.com/ipld/go-trustless-utils v0.6.0/go.mod h1:inKRRT3L9BT1r/u6yBbXuIq+wIGO2yf0NqiOo36bH9U=
+github.com/ipld/go-trustless-utils v0.6.1-0.20251014050816-171c6b23a8c1 h1:LGTUHNsKLlL2zzXlJL5KZnvteRhQblhOP8CBKaUZi7M=
+github.com/ipld/go-trustless-utils v0.6.1-0.20251014050816-171c6b23a8c1/go.mod h1:inKRRT3L9BT1r/u6yBbXuIq+wIGO2yf0NqiOo36bH9U=
 github.com/ipld/ipld/specs v0.0.0-20231012031213-54d3b21deda4 h1:0VXv637/xpI0Pb5J8K+K8iRtTw4DOcxs0MB1HMzfwNY=
 github.com/ipld/ipld/specs v0.0.0-20231012031213-54d3b21deda4/go.mod h1:WcT0DfRe+e2QFY0kcbsOnuT6jL5Q0JNZ83I5DHIdStg=
 github.com/ipni/go-libipni v0.7.1 h1:0peyJTXXgrDHqjiqpSuYlxH3JIvnUMw1Orq7nJtq/tY=

httpipfs.go

@@ -255,21 +255,11 @@ func NewHttpIpfsHandlerFunc(
 		}
 		accept := accepts[0]
 
-		// Parse filename parameter - trustlesshttp.ParseFilename only accepts .car
-		// but frisbii also supports raw responses with .bin, so we handle that case
-		fileName, err := trustlesshttp.ParseFilename(req)
+		// Parse filename parameter - supports both .car and .bin extensions
+		fileName, err := trustlesshttp.ParseFilename(req, accepts)
 		if err != nil {
-			// If ParseFilename failed, check if it's because of .bin extension for raw response
-			if accept.IsRaw() && req.URL.Query().Get("filename") != "" {
-				fileName = req.URL.Query().Get("filename")
-				if !strings.HasSuffix(fileName, ".bin") {
-					logError(http.StatusBadRequest, fmt.Errorf("invalid filename parameter for raw response; expected .bin extension"))
-					return
-				}
-			} else {
-				logError(http.StatusBadRequest, err)
-				return
-			}
+			logError(http.StatusBadRequest, err)
+			return
 		}
 
 		// validate CID path parameter