fix(gw): preserve query on website redirect

core/corehttp/gateway_handler.go

@@ -290,7 +290,12 @@ func (i *gatewayHandler) getOrHeadHandler(w http.ResponseWriter, r *http.Request
 		goget := r.URL.Query().Get("go-get") == "1"
 		if dirwithoutslash && !goget {
 			// See comment above where originalUrlPath is declared.
-			http.Redirect(w, r, originalUrlPath+"/", 302)
+			suffix := "/"
+			if r.URL.RawQuery != "" {
+				// preserve query parameters
+				suffix = suffix + "?" + r.URL.RawQuery
+			}
+			http.Redirect(w, r, originalUrlPath+suffix, 302)
 			return
 		}
 

test/sharness/t0110-gateway.sh

@@ -54,8 +54,9 @@ test_expect_success "GET IPFS path output looks good" '
 '
 
 test_expect_success "GET IPFS directory path succeeds" '
-  mkdir dir &&
+  mkdir -p dir/dirwithindex &&
   echo "12345" >dir/test &&
+  echo "hello i am a webpage" >dir/dirwithindex/index.html &&
   ipfs add -r -q dir >actual &&
   HASH2=$(tail -n 1 actual) &&
   curl -sf "http://127.0.0.1:$port/ipfs/$HASH2"
@@ -69,6 +70,16 @@ test_expect_success "GET IPFS directory file output looks good" '
   test_cmp dir/test actual
 '
 
+test_expect_success "GET IPFS directory with index.html returns redirect to add trailing slash" "
+  curl -sI -o response_without_slash \"http://127.0.0.1:$port/ipfs/$HASH2/dirwithindex?query=to-remember\"  &&
+  test_should_contain \"Location: /ipfs/$HASH2/dirwithindex/?query=to-remember\" response_without_slash
+"
+
+test_expect_success "GET IPFS directory with index.html and trailing slash returns expected output" "
+  curl -s -o response_with_slash \"http://127.0.0.1:$port/ipfs/$HASH2/dirwithindex/?query=to-remember\"  &&
+  test_should_contain \"hello i am a webpage\" response_with_slash
+"
+
 test_expect_success "GET IPFS nonexistent file returns code expected (404)" '
   test_curl_resp_http_code "http://127.0.0.1:$port/ipfs/$HASH2/pleaseDontAddMe" "HTTP/1.1 404 Not Found"
 '