Spoof UA as Chrome 1.0 when loading URLs from *.pointroll.com.

webkit/glue/webkit_glue.cc

 // Copyright (c) 2006-2009 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 "config.h"
 #include "webkit/glue/webkit_glue.h"
 
 #if defined(OS_WIN)
 #include <objidl.h>
 #include <mlang.h>
@@ skipping 50 matching lines @@
 namespace {
 
 static const char kLayoutTestsPattern[] = "/LayoutTests/";
 static const std::string::size_type kLayoutTestsPatternSize =
     arraysize(kLayoutTestsPattern) - 1;
 static const char kFileUrlPattern[] = "file:/";
 static const char kDataUrlPattern[] = "data:";
 static const std::string::size_type kDataUrlPatternSize =
     arraysize(kDataUrlPattern) - 1;
 static const char kFileTestPrefix[] = "(file test):";
+static const char kChrome1ProductString[] = "Chrome/1.0.154.53";
 
 }
 
 //------------------------------------------------------------------------------
 // webkit_glue impl:
 
 namespace webkit_glue {
 
 // Global variable used by the plugin quirk "die after unload".
 bool g_forcefully_terminate_plugin_process = false;
@@ skipping 234 matching lines @@
 
 namespace {
 
 struct UserAgentState {
   UserAgentState()
       : user_agent_requested(false),
         user_agent_is_overridden(false) {
   }
 
   std::string user_agent;
+  std::string mimic_chrome1_user_agent;
   bool user_agent_requested;
   bool user_agent_is_overridden;
 };
 
 Singleton<UserAgentState> g_user_agent;
 
 std::string BuildOSCpuInfo() {
   std::string os_cpu;
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
@@ skipping 39 matching lines @@
 #else
       "%s %s",
       unixinfo.sysname, // e.g. Linux
       cputype.c_str()   // e.g. i686
 #endif
   );
 
   return os_cpu;
 }
 
-void BuildUserAgent(std::string* result) {
+void BuildUserAgent(bool mimic_chrome1, std::string* result) {
   const char kUserAgentPlatform[] =
 #if defined(OS_WIN)
       "Windows";
 #elif defined(OS_MACOSX)
       "Macintosh";
 #elif defined(OS_LINUX)
       "X11";              // strange, but that's what Firefox uses
 #else
       "?";
 #endif
 
   const char kUserAgentSecurity = 'U'; // "US" strength encryption
 
   // TODO(port): figure out correct locale
   const char kUserAgentLocale[] = "en-US";
 
   // Get the product name and version, and replace Safari's Version/X string
   // with it.  This is done to expose our product name in a manner that is
   // maximally compatible with Safari, we hope!!
   std::string product;
 
-  scoped_ptr<FileVersionInfo> version_info(
-      FileVersionInfo::CreateFileVersionInfoForCurrentModule());
-  if (version_info.get()) {
-    product = "Chrome/" + WideToASCII(version_info->product_version());
+  if (mimic_chrome1) {
+    product = kChrome1ProductString;
   } else {
-    DLOG(WARNING) << "Unknown product version";
-    product = "Chrome/0.0.0.0";
+    scoped_ptr<FileVersionInfo> version_info(
+        FileVersionInfo::CreateFileVersionInfoForCurrentModule());
+    if (version_info.get()) {
+      product = "Chrome/" + WideToASCII(version_info->product_version());
+    } else {
+      DLOG(WARNING) << "Unknown product version";
+      product = "Chrome/0.0.0.0";
+    }
   }
 
   // Derived from Safari's UA string.
   StringAppendF(
       result,
       "Mozilla/5.0 (%s; %c; %s; %s) AppleWebKit/%d.%d"
       " (KHTML, like Gecko) %s Safari/%d.%d",
       kUserAgentPlatform,
       kUserAgentSecurity,
       BuildOSCpuInfo().c_str(),
       kUserAgentLocale,
       WEBKIT_VERSION_MAJOR,
       WEBKIT_VERSION_MINOR,
       product.c_str(),
       WEBKIT_VERSION_MAJOR,
       WEBKIT_VERSION_MINOR
       );
 }
 
 void SetUserAgentToDefault() {
-  BuildUserAgent(&g_user_agent->user_agent);
+  BuildUserAgent(false, &g_user_agent->user_agent);
 }
 
 }  // namespace
 
 void SetUserAgent(const std::string& new_user_agent) {
   // If you combine this with the previous line, the function only works the
   // first time.
   DCHECK(!g_user_agent->user_agent_requested) <<
       "Setting the user agent after someone has "
       "already requested it can result in unexpected behavior.";
   g_user_agent->user_agent_is_overridden = true;
   g_user_agent->user_agent = new_user_agent;
 }
 
 const std::string& GetUserAgent(const GURL& url) {
   if (g_user_agent->user_agent.empty())
     SetUserAgentToDefault();
   g_user_agent->user_agent_requested = true;
+  if (!g_user_agent->user_agent_is_overridden) {
+    // For cnn.com, which uses pointroll.com to serve their front door promo,
+    // we must spoof Chrome 1.0 in order to avoid blank page due to mis-sniffing
+    // of the UA on the server side (http://crbug.com/25934)
+    // TODO(dglazkov): Remove this once CNN's front door promo is over or when
+    // pointroll fixes their sniffing.
+    if (MatchPattern(url.host(), "*.pointroll.com")) {
+      if (g_user_agent->mimic_chrome1_user_agent.empty())
+        BuildUserAgent(true, &g_user_agent->mimic_chrome1_user_agent);
+      return g_user_agent->mimic_chrome1_user_agent;
+    }
+  }
   return g_user_agent->user_agent;
 }
 
 void SetForcefullyTerminatePluginProcess(bool value) {
   if (IsPluginRunningInRendererProcess()) {
     // Ignore this quirk when the plugins are not running in their own process.
     return;
   }
 
   g_forcefully_terminate_plugin_process = value;
@@ skipping 22 matching lines @@
 
 bool IsMediaCacheEnabled() {
   return g_enable_media_cache;
 }
 
 void SetMediaCacheEnabled(bool enabled) {
   g_enable_media_cache = enabled;
 }
 
 } // namespace webkit_glue