Added characters that look like padlocks to URL unescaping blacklist.

net/base/escape_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 #include <string>
 
 #include "net/base/escape.h"
 
 #include "base/basictypes.h"
@@ skipping 258 matching lines @@
     {L"Some%20random text %25%E2%80%AEOK",
      UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
      L"Some%20random text %25\xE2\x80\xAEOK"},
     {L"Some%20random text %25%E2%81%A6OK",
      UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
      L"Some%20random text %25\xE2\x81\xA6OK"},
     {L"Some%20random text %25%E2%81%A9OK",
      UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
      L"Some%20random text %25\xE2\x81\xA9OK"},
 
+    // Certain banned characters should not be unescaped unless explicitly told
+    // to do so with UnescapeRule::CONTROL_CHARS.
+    // U+1F50F LOCK WITH INK PEN
+    {L"Some%20random text %25%F0%9F%94%8FOK", UnescapeRule::NORMAL,
+     L"Some%20random text %25%F0%9F%94%8FOK"},
+    // U+1F510 CLOSED LOCK WITH KEY
+    {L"Some%20random text %25%F0%9F%94%90OK", UnescapeRule::NORMAL,
+     L"Some%20random text %25%F0%9F%94%90OK"},
+    // U+1F512 LOCK
+    {L"Some%20random text %25%F0%9F%94%92OK", UnescapeRule::NORMAL,
+     L"Some%20random text %25%F0%9F%94%92OK"},
+    // U+1F513 OPEN LOCK
+    {L"Some%20random text %25%F0%9F%94%93OK", UnescapeRule::NORMAL,
+     L"Some%20random text %25%F0%9F%94%93OK"},
+    // UnescapeRule::CONTROL_CHARS should unescape banned characters.
+    {L"Some%20random text %25%F0%9F%94%8FOK",
+     UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
+     L"Some%20random text %25\xF0\x9F\x94\x8FOK"},
+    {L"Some%20random text %25%F0%9F%94%90OK",
+     UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
+     L"Some%20random text %25\xF0\x9F\x94\x90OK"},
+    {L"Some%20random text %25%F0%9F%94%92OK",
+     UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
+     L"Some%20random text %25\xF0\x9F\x94\x92OK"},
+    {L"Some%20random text %25%F0%9F%94%93OK",
+     UnescapeRule::NORMAL | UnescapeRule::CONTROL_CHARS,
+     L"Some%20random text %25\xF0\x9F\x94\x93OK"},
+
     {L"Some%20random text %25%2dOK", UnescapeRule::SPACES,
      L"Some random text %25-OK"},
     {L"Some%20random text %25%2dOK", UnescapeRule::URL_SPECIAL_CHARS,
      L"Some%20random text %-OK"},
     {L"Some%20random text %25%2dOK",
      UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS,
      L"Some random text %-OK"},
     {L"%A0%B1%C2%D3%E4%F5", UnescapeRule::NORMAL, L"\xA0\xB1\xC2\xD3\xE4\xF5"},
     {L"%Aa%Bb%Cc%Dd%Ee%Ff", UnescapeRule::NORMAL, L"\xAa\xBb\xCc\xDd\xEe\xFf"},
     // Certain URL-sensitive characters should not be unescaped unless asked.
@@ skipping 223 matching lines @@
                 "http://example.com/path/sub?q=a|b|c&q=1|2|3#ref|"));
   ASSERT_EQ("http://example.com/path/sub?q=a%7Cb%7Cc&q=1%7C2%7C3#ref%7C",
             EscapeExternalHandlerValue(
                 "http://example.com/path/sub?q=a%7Cb%7Cc&q=1%7C2%7C3#ref%7C"));
   ASSERT_EQ("http://[2001:db8:0:1]:80",
             EscapeExternalHandlerValue("http://[2001:db8:0:1]:80"));
 }
 
 }  // namespace
 }  // namespace net