url: fix file url reparse

Fixes: #35571
Refs: whatwg/url#550
Refs: web-platform-tests/wpt#25989

PR-URL: #35671
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

lib/internal/url.js

@@ -419,8 +419,6 @@ ObjectDefineProperties(URL.prototype, {
           domainToUnicode(this.hostname) : this.hostname;
         if (ctx.port !== null)
           ret += `:${ctx.port}`;
-      } else if (ctx.scheme === 'file:') {
-        ret += '//';
       }
       if (this[cannotBeBase]) {
         ret += ctx.path[0];
@@ -504,10 +502,6 @@ ObjectDefineProperties(URL.prototype, {
       if (scheme.length === 0)
         return;
       const ctx = this[context];
-      if (ctx.scheme === 'file:' &&
-          (ctx.host === '' || ctx.host === null)) {
-        return;
-      }
       parse(scheme, kSchemeStart, null, ctx,
             onParseProtocolComplete.bind(this));
     }

src/node_url.cc

@@ -1461,13 +1461,11 @@ void URL::Parse(const char* input,
                 ((buffer == "file:") &&
                  ((url->flags & URL_FLAGS_HAS_USERNAME) ||
                   (url->flags & URL_FLAGS_HAS_PASSWORD) ||
-                  (url->port != -1)))) {
+                  (url->port != -1))) ||
+                  (url->scheme == "file:" && url->host.empty())) {
               url->flags |= URL_FLAGS_TERMINATED;
               return;
             }
-
-            // File scheme && (host == empty or null) check left to JS-land
-            // as it can be done before even entering C++ binding.
           }
 
           url->scheme = std::move(buffer);
@@ -1855,13 +1853,14 @@ void URL::Parse(const char* input,
         break;
       case kFile:
         url->scheme = "file:";
+        url->host.clear();
+        url->flags |= URL_FLAGS_HAS_HOST;
         if (ch == '/' || ch == '\\') {
           state = kFileSlash;
         } else if (has_base && base->scheme == "file:") {
           switch (ch) {
             case kEOL:
               if (base->flags & URL_FLAGS_HAS_HOST) {
-                url->flags |= URL_FLAGS_HAS_HOST;
                 url->host = base->host;
               }
               if (base->flags & URL_FLAGS_HAS_PATH) {
@@ -1875,7 +1874,6 @@ void URL::Parse(const char* input,
               break;
             case '?':
               if (base->flags & URL_FLAGS_HAS_HOST) {
-                url->flags |= URL_FLAGS_HAS_HOST;
                 url->host = base->host;
               }
               if (base->flags & URL_FLAGS_HAS_PATH) {
@@ -1888,7 +1886,6 @@ void URL::Parse(const char* input,
               break;
             case '#':
               if (base->flags & URL_FLAGS_HAS_HOST) {
-                url->flags |= URL_FLAGS_HAS_HOST;
                 url->host = base->host;
               }
               if (base->flags & URL_FLAGS_HAS_PATH) {
@@ -1906,7 +1903,6 @@ void URL::Parse(const char* input,
             default:
               url->query.clear();
               if (base->flags & URL_FLAGS_HAS_HOST) {
-                url->flags |= URL_FLAGS_HAS_HOST;
                 url->host = base->host;
               }
               if (base->flags & URL_FLAGS_HAS_PATH) {

test/fixtures/wpt/README.md

@@ -12,7 +12,7 @@ Last update:
 
 - console: https://github.com/web-platform-tests/wpt/tree/3b1f72e99a/console
 - encoding: https://github.com/web-platform-tests/wpt/tree/d7f9e16c9a/encoding
-- url: https://github.com/web-platform-tests/wpt/tree/4e15edcc3c/url
+- url: https://github.com/web-platform-tests/wpt/tree/33e4ac0902/url
 - resources: https://github.com/web-platform-tests/wpt/tree/1d14e821b9/resources
 - interfaces: https://github.com/web-platform-tests/wpt/tree/15e47f779c/interfaces
 - html/webappapis/microtask-queuing: https://github.com/web-platform-tests/wpt/tree/2c5c3c4c27/html/webappapis/microtask-queuing

test/fixtures/wpt/url/resources/urltestdata.json

@@ -6091,7 +6091,7 @@
     "base": "about:blank",
     "failure": true
   },
-  "# Additional file URL tetsts for (https://github.com/whatwg/url/issues/405)",
+  "# Additional file URL tests for (https://github.com/whatwg/url/issues/405)",
   {
     "input": "file://localhost//a//../..//foo",
     "base": "about:blank",
@@ -6218,6 +6218,35 @@
     "search": "",
     "hash": ""
   },
+  "File URL tests for https://github.com/whatwg/url/issues/549",
+  {
+    "input": "file:.//p",
+    "base": "about:blank",
+    "href": "file:////p",
+    "protocol": "file:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "//p",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "file:/.//p",
+    "base": "about:blank",
+    "href": "file:////p",
+    "protocol": "file:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "//p",
+    "search": "",
+    "hash": ""
+  },
   "# IPv6 tests",
   {
     "input": "http://[1:0::]",

test/fixtures/wpt/versions.json

@@ -8,7 +8,7 @@
     "path": "encoding"
   },
   "url": {
-    "commit": "4e15edcc3ca51c72c3846133c7b175ecd94b3a9b",
+    "commit": "33e4ac09029c463ea6ee57d6f33477a9043e98e8",
     "path": "url"
   },
   "resources": {