Index: webkit/user_agent/user_agent.cc |
diff --git a/webkit/user_agent/user_agent.cc b/webkit/user_agent/user_agent.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..0efdb22c21ec9c4f08faae58e42e87dd38a7c9ad |
--- /dev/null |
+++ b/webkit/user_agent/user_agent.cc |
@@ -0,0 +1,145 @@ |
+// Copyright 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 "webkit/user_agent/user_agent.h" |
+ |
+#include "base/lazy_instance.h" |
+#include "base/logging.h" |
+#include "base/string_util.h" |
+#include "base/stringprintf.h" |
+#include "base/synchronization/lock.h" |
+#include "webkit/user_agent/user_agent_util.h" |
+ |
+namespace webkit_glue { |
+ |
+namespace { |
+ |
+class UserAgentState { |
+ public: |
+ UserAgentState(); |
+ ~UserAgentState(); |
+ |
+ void Set(const std::string& user_agent, bool overriding); |
+ const std::string& Get(const GURL& url) const; |
+ |
+ private: |
+ mutable std::string user_agent_; |
+ // The UA string when we're pretending to be Mac Safari or Win Firefox. |
+ mutable std::string user_agent_for_spoofing_hack_; |
+ |
+ mutable bool user_agent_requested_; |
+ bool user_agent_is_overridden_; |
+ |
+ // This object can be accessed from multiple threads, so use a lock around |
+ // accesses to the data members. |
+ mutable base::Lock lock_; |
+}; |
+ |
+UserAgentState::UserAgentState() |
+ : user_agent_requested_(false), |
+ user_agent_is_overridden_(false) { |
+} |
+ |
+UserAgentState::~UserAgentState() { |
+} |
+ |
+void UserAgentState::Set(const std::string& user_agent, bool overriding) { |
+ base::AutoLock auto_lock(lock_); |
+ if (user_agent == user_agent_) { |
+ // We allow the user agent to be set multiple times as long as it |
+ // is set to the same value, in order to simplify unit testing |
+ // given g_user_agent is a global. |
+ return; |
+ } |
+ DCHECK(!user_agent.empty()); |
+ DCHECK(!user_agent_requested_) << "Setting the user agent after someone has " |
+ "already requested it can result in unexpected behavior."; |
+ user_agent_is_overridden_ = overriding; |
+ user_agent_ = user_agent; |
+} |
+ |
+bool IsMicrosoftSiteThatNeedsSpoofingForSilverlight(const GURL& url) { |
+#if defined(OS_MACOSX) |
+ // The landing page for updating Silverlight gives a confusing experience |
+ // in browsers that Silverlight doesn't officially support; spoof as |
+ // Safari to reduce the chance that users won't complete updates. |
+ // Should be removed if the sniffing is removed: http://crbug.com/88211 |
+ if (url.host() == "www.microsoft.com" && |
+ StartsWithASCII(url.path(), "/getsilverlight", false)) { |
+ return true; |
+ } |
+#endif |
+ return false; |
+} |
+ |
+bool IsYahooSiteThatNeedsSpoofingForSilverlight(const GURL& url) { |
+#if defined(OS_MACOSX) || defined(OS_WIN) |
+ // The following Yahoo! JAPAN pages erroneously judge that Silverlight does |
+ // not support Chromium. Until the pages are fixed, spoof the UA. |
+ // http://crbug.com/104426 |
+ if (url.host() == "headlines.yahoo.co.jp" && |
+ StartsWithASCII(url.path(), "/videonews/", true)) { |
+ return true; |
+ } |
+#endif |
+#if defined(OS_MACOSX) |
+ if ((url.host() == "downloads.yahoo.co.jp" && |
+ StartsWithASCII(url.path(), "/docs/silverlight/", true)) || |
+ url.host() == "gyao.yahoo.co.jp") { |
+ return true; |
+ } |
+#elif defined(OS_WIN) |
+ if ((url.host() == "weather.yahoo.co.jp" && |
+ StartsWithASCII(url.path(), "/weather/zoomradar/", true)) || |
+ url.host() == "promotion.shopping.yahoo.co.jp" || |
+ url.host() == "pokemon.kids.yahoo.co.jp") { |
+ return true; |
+ } |
+#endif |
+ return false; |
+} |
+ |
+const std::string& UserAgentState::Get(const GURL& url) const { |
+ base::AutoLock auto_lock(lock_); |
+ user_agent_requested_ = true; |
+ |
+ DCHECK(!user_agent_.empty()); |
+ |
+ // Workarounds for sites that use misguided UA sniffing. |
+ if (!user_agent_is_overridden_) { |
+ if (IsMicrosoftSiteThatNeedsSpoofingForSilverlight(url) || |
+ IsYahooSiteThatNeedsSpoofingForSilverlight(url)) { |
+ if (user_agent_for_spoofing_hack_.empty()) { |
+#if defined(OS_MACOSX) |
+ user_agent_for_spoofing_hack_ = |
+ BuildUserAgentFromProduct("Version/5.1.1 Safari/534.51.22"); |
+#elif defined(OS_WIN) |
+ // Pretend to be Firefox. Silverlight doesn't support Win Safari. |
+ base::StringAppendF( |
+ &user_agent_for_spoofing_hack_, |
+ "Mozilla/5.0 (%s) Gecko/20100101 Firefox/8.0", |
+ webkit_glue::BuildOSCpuInfo().c_str()); |
+#endif |
+ } |
+ DCHECK(!user_agent_for_spoofing_hack_.empty()); |
+ return user_agent_for_spoofing_hack_; |
+ } |
+ } |
+ |
+ return user_agent_; |
+} |
+ |
+base::LazyInstance<UserAgentState> g_user_agent = LAZY_INSTANCE_INITIALIZER; |
+ |
+} // namespace |
+ |
+void SetUserAgent(const std::string& user_agent, bool overriding) { |
+ g_user_agent.Get().Set(user_agent, overriding); |
+} |
+ |
+const std::string& GetUserAgent(const GURL& url) { |
+ return g_user_agent.Get().Get(url); |
+} |
+ |
+} // namespace webkit_glue |