chrome/renderer/content_settings_observer.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/renderer/content_settings_observer.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/histogram.h"
   9 #include "chrome/common/chrome_switches.h"
  10 #include "chrome/common/render_messages.h"
  11 #include "chrome/common/url_constants.h"
  12 #include "content/public/renderer/document_state.h"
  13 #include "content/public/renderer/navigation_state.h"
  14 #include "content/public/renderer/render_frame.h"
  15 #include "content/public/renderer/render_view.h"
  16 #include "third_party/WebKit/public/platform/WebPermissionCallbacks.h"
  17 #include "third_party/WebKit/public/platform/WebURL.h"
  18 #include "third_party/WebKit/public/web/WebDataSource.h"
  19 #include "third_party/WebKit/public/web/WebDocument.h"
  20 #include "third_party/WebKit/public/web/WebFrame.h"
  21 #include "third_party/WebKit/public/web/WebFrameClient.h"
  22 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
  23 #include "third_party/WebKit/public/web/WebView.h"
  24
  25 #if defined(ENABLE_EXTENSIONS)
  26 #include "chrome/common/extensions/chrome_extension_messages.h"
  27 #include "extensions/common/constants.h"
  28 #include "extensions/common/extension.h"
  29 #include "extensions/renderer/dispatcher.h"
  30 #endif
  31
  32 using blink::WebDataSource;
  33 using blink::WebDocument;
  34 using blink::WebFrame;
  35 using blink::WebPermissionCallbacks;
  36 using blink::WebSecurityOrigin;
  37 using blink::WebString;
  38 using blink::WebURL;
  39 using blink::WebView;
  40 using content::DocumentState;
  41 using content::NavigationState;
  42
  43 namespace {
  44
  45 enum {
  46   INSECURE_CONTENT_DISPLAY = 0,
  47   INSECURE_CONTENT_DISPLAY_HOST_GOOGLE,
  48   INSECURE_CONTENT_DISPLAY_HOST_WWW_GOOGLE,
  49   INSECURE_CONTENT_DISPLAY_HTML,
  50   INSECURE_CONTENT_RUN,
  51   INSECURE_CONTENT_RUN_HOST_GOOGLE,
  52   INSECURE_CONTENT_RUN_HOST_WWW_GOOGLE,
  53   INSECURE_CONTENT_RUN_TARGET_YOUTUBE,
  54   INSECURE_CONTENT_RUN_JS,
  55   INSECURE_CONTENT_RUN_CSS,
  56   INSECURE_CONTENT_RUN_SWF,
  57   INSECURE_CONTENT_DISPLAY_HOST_YOUTUBE,
  58   INSECURE_CONTENT_RUN_HOST_YOUTUBE,
  59   INSECURE_CONTENT_RUN_HOST_GOOGLEUSERCONTENT,
  60   INSECURE_CONTENT_DISPLAY_HOST_MAIL_GOOGLE,
  61   INSECURE_CONTENT_RUN_HOST_MAIL_GOOGLE,
  62   INSECURE_CONTENT_DISPLAY_HOST_PLUS_GOOGLE,
  63   INSECURE_CONTENT_RUN_HOST_PLUS_GOOGLE,
  64   INSECURE_CONTENT_DISPLAY_HOST_DOCS_GOOGLE,
  65   INSECURE_CONTENT_RUN_HOST_DOCS_GOOGLE,
  66   INSECURE_CONTENT_DISPLAY_HOST_SITES_GOOGLE,
  67   INSECURE_CONTENT_RUN_HOST_SITES_GOOGLE,
  68   INSECURE_CONTENT_DISPLAY_HOST_PICASAWEB_GOOGLE,
  69   INSECURE_CONTENT_RUN_HOST_PICASAWEB_GOOGLE,
  70   INSECURE_CONTENT_DISPLAY_HOST_GOOGLE_READER,
  71   INSECURE_CONTENT_RUN_HOST_GOOGLE_READER,
  72   INSECURE_CONTENT_DISPLAY_HOST_CODE_GOOGLE,
  73   INSECURE_CONTENT_RUN_HOST_CODE_GOOGLE,
  74   INSECURE_CONTENT_DISPLAY_HOST_GROUPS_GOOGLE,
  75   INSECURE_CONTENT_RUN_HOST_GROUPS_GOOGLE,
  76   INSECURE_CONTENT_DISPLAY_HOST_MAPS_GOOGLE,
  77   INSECURE_CONTENT_RUN_HOST_MAPS_GOOGLE,
  78   INSECURE_CONTENT_DISPLAY_HOST_GOOGLE_SUPPORT,
  79   INSECURE_CONTENT_RUN_HOST_GOOGLE_SUPPORT,
  80   INSECURE_CONTENT_DISPLAY_HOST_GOOGLE_INTL,
  81   INSECURE_CONTENT_RUN_HOST_GOOGLE_INTL,
  82   INSECURE_CONTENT_NUM_EVENTS
  83 };
  84
  85 // Constants for UMA statistic collection.
  86 static const char kWWWDotGoogleDotCom[] = "www.google.com";
  87 static const char kMailDotGoogleDotCom[] = "mail.google.com";
  88 static const char kPlusDotGoogleDotCom[] = "plus.google.com";
  89 static const char kDocsDotGoogleDotCom[] = "docs.google.com";
  90 static const char kSitesDotGoogleDotCom[] = "sites.google.com";
  91 static const char kPicasawebDotGoogleDotCom[] = "picasaweb.google.com";
  92 static const char kCodeDotGoogleDotCom[] = "code.google.com";
  93 static const char kGroupsDotGoogleDotCom[] = "groups.google.com";
  94 static const char kMapsDotGoogleDotCom[] = "maps.google.com";
  95 static const char kWWWDotYoutubeDotCom[] = "www.youtube.com";
  96 static const char kDotGoogleUserContentDotCom[] = ".googleusercontent.com";
  97 static const char kGoogleReaderPathPrefix[] = "/reader/";
  98 static const char kGoogleSupportPathPrefix[] = "/support/";
  99 static const char kGoogleIntlPathPrefix[] = "/intl/";
 100 static const char kDotJS[] = ".js";
 101 static const char kDotCSS[] = ".css";
 102 static const char kDotSWF[] = ".swf";
 103 static const char kDotHTML[] = ".html";
 104
 105 // Constants for mixed-content blocking.
 106 static const char kGoogleDotCom[] = "google.com";
 107
 108 static bool IsHostInDomain(const std::string& host, const std::string& domain) {
 109   return (EndsWith(host, domain, false) &&
 110           (host.length() == domain.length() ||
 111            (host.length() > domain.length() &&
 112             host[host.length() - domain.length() - 1] == '.')));
 113 }
 114
 115 GURL GetOriginOrURL(const WebFrame* frame) {
 116   WebString top_origin = frame->top()->document().securityOrigin().toString();
 117   // The the |top_origin| is unique ("null") e.g., for file:// URLs. Use the
 118   // document URL as the primary URL in those cases.
 119   if (top_origin == "null")
 120     return frame->top()->document().url();
 121   return GURL(top_origin);
 122 }
 123
 124 ContentSetting GetContentSettingFromRules(
 125     const ContentSettingsForOneType& rules,
 126     const WebFrame* frame,
 127     const GURL& secondary_url) {
 128   ContentSettingsForOneType::const_iterator it;
 129   // If there is only one rule, it's the default rule and we don't need to match
 130   // the patterns.
 131   if (rules.size() == 1) {
 132     DCHECK(rules[0].primary_pattern == ContentSettingsPattern::Wildcard());
 133     DCHECK(rules[0].secondary_pattern == ContentSettingsPattern::Wildcard());
 134     return rules[0].setting;
 135   }
 136   const GURL& primary_url = GetOriginOrURL(frame);
 137   for (it = rules.begin(); it != rules.end(); ++it) {
 138     if (it->primary_pattern.Matches(primary_url) &&
 139         it->secondary_pattern.Matches(secondary_url)) {
 140       return it->setting;
 141     }
 142   }
 143   NOTREACHED();
 144   return CONTENT_SETTING_DEFAULT;
 145 }
 146
 147 }  // namespace
 148
 149 ContentSettingsObserver::ContentSettingsObserver(
 150     content::RenderFrame* render_frame,
 151     extensions::Dispatcher* extension_dispatcher)
 152     : content::RenderFrameObserver(render_frame),
 153       content::RenderFrameObserverTracker<ContentSettingsObserver>(
 154           render_frame),
 155 #if defined(ENABLE_EXTENSIONS)
 156       extension_dispatcher_(extension_dispatcher),
 157 #endif
 158       allow_displaying_insecure_content_(false),
 159       allow_running_insecure_content_(false),
 160       content_setting_rules_(NULL),
 161       is_interstitial_page_(false),
 162       npapi_plugins_blocked_(false),
 163       current_request_id_(0) {
 164   ClearBlockedContentSettings();
 165   render_frame->GetWebFrame()->setPermissionClient(this);
 166
 167   if (render_frame->GetRenderView()->GetMainRenderFrame() != render_frame) {
 168     // Copy all the settings from the main render frame to avoid race conditions
 169     // when initializing this data. See http://crbug.com/333308.
 170     ContentSettingsObserver* parent = ContentSettingsObserver::Get(
 171         render_frame->GetRenderView()->GetMainRenderFrame());
 172     allow_displaying_insecure_content_ =
 173         parent->allow_displaying_insecure_content_;
 174     allow_running_insecure_content_ = parent->allow_running_insecure_content_;
 175     temporarily_allowed_plugins_ = parent->temporarily_allowed_plugins_;
 176     is_interstitial_page_ = parent->is_interstitial_page_;
 177     npapi_plugins_blocked_ = parent->npapi_plugins_blocked_;
 178   }
 179 }
 180
 181 ContentSettingsObserver::~ContentSettingsObserver() {
 182 }
 183
 184 void ContentSettingsObserver::SetContentSettingRules(
 185     const RendererContentSettingRules* content_setting_rules) {
 186   content_setting_rules_ = content_setting_rules;
 187 }
 188
 189 bool ContentSettingsObserver::IsPluginTemporarilyAllowed(
 190     const std::string& identifier) {
 191   // If the empty string is in here, it means all plug-ins are allowed.
 192   // TODO(bauerb): Remove this once we only pass in explicit identifiers.
 193   return (temporarily_allowed_plugins_.find(identifier) !=
 194           temporarily_allowed_plugins_.end()) ||
 195          (temporarily_allowed_plugins_.find(std::string()) !=
 196           temporarily_allowed_plugins_.end());
 197 }
 198
 199 void ContentSettingsObserver::DidBlockContentType(
 200     ContentSettingsType settings_type) {
 201   if (!content_blocked_[settings_type]) {
 202     content_blocked_[settings_type] = true;
 203     Send(new ChromeViewHostMsg_ContentBlocked(routing_id(), settings_type));
 204   }
 205 }
 206
 207 bool ContentSettingsObserver::OnMessageReceived(const IPC::Message& message) {
 208   bool handled = true;
 209   IPC_BEGIN_MESSAGE_MAP(ContentSettingsObserver, message)
 210     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetAsInterstitial, OnSetAsInterstitial)
 211     IPC_MESSAGE_HANDLER(ChromeViewMsg_NPAPINotSupported, OnNPAPINotSupported)
 212     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetAllowDisplayingInsecureContent,
 213                         OnSetAllowDisplayingInsecureContent)
 214     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetAllowRunningInsecureContent,
 215                         OnSetAllowRunningInsecureContent)
 216     IPC_MESSAGE_HANDLER(ChromeViewMsg_ReloadFrame, OnReloadFrame);
 217     IPC_MESSAGE_HANDLER(ChromeViewMsg_RequestFileSystemAccessAsyncResponse,
 218                         OnRequestFileSystemAccessAsyncResponse)
 219     IPC_MESSAGE_UNHANDLED(handled = false)
 220   IPC_END_MESSAGE_MAP()
 221   if (handled)
 222     return true;
 223
 224   // Don't swallow LoadBlockedPlugins messages, as they're sent to every
 225   // blocked plugin.
 226   IPC_BEGIN_MESSAGE_MAP(ContentSettingsObserver, message)
 227     IPC_MESSAGE_HANDLER(ChromeViewMsg_LoadBlockedPlugins, OnLoadBlockedPlugins)
 228   IPC_END_MESSAGE_MAP()
 229
 230   return false;
 231 }
 232
 233 void ContentSettingsObserver::DidCommitProvisionalLoad(bool is_new_navigation) {
 234   WebFrame* frame = render_frame()->GetWebFrame();
 235   if (frame->parent())
 236     return;  // Not a top-level navigation.
 237
 238   DocumentState* document_state = DocumentState::FromDataSource(
 239       frame->dataSource());
 240   NavigationState* navigation_state = document_state->navigation_state();
 241   if (!navigation_state->was_within_same_page()) {
 242     // Clear "block" flags for the new page. This needs to happen before any of
 243     // |allowScript()|, |allowScriptFromSource()|, |allowImage()|, or
 244     // |allowPlugins()| is called for the new page so that these functions can
 245     // correctly detect that a piece of content flipped from "not blocked" to
 246     // "blocked".
 247     ClearBlockedContentSettings();
 248     temporarily_allowed_plugins_.clear();
 249   }
 250
 251   GURL url = frame->document().url();
 252   // If we start failing this DCHECK, please makes sure we don't regress
 253   // this bug: http://code.google.com/p/chromium/issues/detail?id=79304
 254   DCHECK(frame->document().securityOrigin().toString() == "null" ||
 255          !url.SchemeIs(url::kDataScheme));
 256 }
 257
 258 bool ContentSettingsObserver::allowDatabase(const WebString& name,
 259                                             const WebString& display_name,
 260                                             unsigned long estimated_size) {
 261   WebFrame* frame = render_frame()->GetWebFrame();
 262   if (frame->document().securityOrigin().isUnique() ||
 263       frame->top()->document().securityOrigin().isUnique())
 264     return false;
 265
 266   bool result = false;
 267   Send(new ChromeViewHostMsg_AllowDatabase(
 268       routing_id(), GURL(frame->document().securityOrigin().toString()),
 269       GURL(frame->top()->document().securityOrigin().toString()),
 270       name, display_name, &result));
 271   return result;
 272 }
 273
 274 void ContentSettingsObserver::requestFileSystemAccessAsync(
 275     const WebPermissionCallbacks& callbacks) {
 276   WebFrame* frame = render_frame()->GetWebFrame();
 277   if (frame->document().securityOrigin().isUnique() ||
 278       frame->top()->document().securityOrigin().isUnique()) {
 279     WebPermissionCallbacks permissionCallbacks(callbacks);
 280     permissionCallbacks.doDeny();
 281     return;
 282   }
 283   ++current_request_id_;
 284   std::pair<PermissionRequestMap::iterator, bool> insert_result =
 285       permission_requests_.insert(
 286           std::make_pair(current_request_id_, callbacks));
 287
 288   // Verify there are no duplicate insertions.
 289   DCHECK(insert_result.second);
 290
 291   Send(new ChromeViewHostMsg_RequestFileSystemAccessAsync(
 292       routing_id(),
 293       current_request_id_,
 294       GURL(frame->document().securityOrigin().toString()),
 295       GURL(frame->top()->document().securityOrigin().toString())));
 296 }
 297
 298 bool ContentSettingsObserver::allowImage(bool enabled_per_settings,
 299                                          const WebURL& image_url) {
 300   bool allow = enabled_per_settings;
 301   if (enabled_per_settings) {
 302     if (is_interstitial_page_)
 303       return true;
 304
 305     if (IsWhitelistedForContentSettings(render_frame()))
 306       return true;
 307
 308     if (content_setting_rules_) {
 309       GURL secondary_url(image_url);
 310       allow =
 311           GetContentSettingFromRules(content_setting_rules_->image_rules,
 312                                      render_frame()->GetWebFrame(),
 313                                      secondary_url) != CONTENT_SETTING_BLOCK;
 314     }
 315   }
 316   if (!allow)
 317     DidBlockContentType(CONTENT_SETTINGS_TYPE_IMAGES);
 318   return allow;
 319 }
 320
 321 bool ContentSettingsObserver::allowIndexedDB(const WebString& name,
 322                                              const WebSecurityOrigin& origin) {
 323   WebFrame* frame = render_frame()->GetWebFrame();
 324   if (frame->document().securityOrigin().isUnique() ||
 325       frame->top()->document().securityOrigin().isUnique())
 326     return false;
 327
 328   bool result = false;
 329   Send(new ChromeViewHostMsg_AllowIndexedDB(
 330       routing_id(), GURL(frame->document().securityOrigin().toString()),
 331       GURL(frame->top()->document().securityOrigin().toString()),
 332       name, &result));
 333   return result;
 334 }
 335
 336 bool ContentSettingsObserver::allowPlugins(bool enabled_per_settings) {
 337   return enabled_per_settings;
 338 }
 339
 340 bool ContentSettingsObserver::allowScript(bool enabled_per_settings) {
 341   if (!enabled_per_settings)
 342     return false;
 343   if (is_interstitial_page_)
 344     return true;
 345
 346   WebFrame* frame = render_frame()->GetWebFrame();
 347   std::map<WebFrame*, bool>::const_iterator it =
 348       cached_script_permissions_.find(frame);
 349   if (it != cached_script_permissions_.end())
 350     return it->second;
 351
 352   // Evaluate the content setting rules before
 353   // |IsWhitelistedForContentSettings|; if there is only the default rule
 354   // allowing all scripts, it's quicker this way.
 355   bool allow = true;
 356   if (content_setting_rules_) {
 357     ContentSetting setting = GetContentSettingFromRules(
 358         content_setting_rules_->script_rules,
 359         frame,
 360         GURL(frame->document().securityOrigin().toString()));
 361     allow = setting != CONTENT_SETTING_BLOCK;
 362   }
 363   allow = allow || IsWhitelistedForContentSettings(render_frame());
 364
 365   cached_script_permissions_[frame] = allow;
 366   return allow;
 367 }
 368
 369 bool ContentSettingsObserver::allowScriptFromSource(
 370     bool enabled_per_settings,
 371     const blink::WebURL& script_url) {
 372   if (!enabled_per_settings)
 373     return false;
 374   if (is_interstitial_page_)
 375     return true;
 376
 377   bool allow = true;
 378   if (content_setting_rules_) {
 379     ContentSetting setting =
 380         GetContentSettingFromRules(content_setting_rules_->script_rules,
 381                                    render_frame()->GetWebFrame(),
 382                                    GURL(script_url));
 383     allow = setting != CONTENT_SETTING_BLOCK;
 384   }
 385   return allow || IsWhitelistedForContentSettings(render_frame());
 386 }
 387
 388 bool ContentSettingsObserver::allowStorage(bool local) {
 389   WebFrame* frame = render_frame()->GetWebFrame();
 390   if (frame->document().securityOrigin().isUnique() ||
 391       frame->top()->document().securityOrigin().isUnique())
 392     return false;
 393   bool result = false;
 394
 395   StoragePermissionsKey key(
 396       GURL(frame->document().securityOrigin().toString()), local);
 397   std::map<StoragePermissionsKey, bool>::const_iterator permissions =
 398       cached_storage_permissions_.find(key);
 399   if (permissions != cached_storage_permissions_.end())
 400     return permissions->second;
 401
 402   Send(new ChromeViewHostMsg_AllowDOMStorage(
 403       routing_id(), GURL(frame->document().securityOrigin().toString()),
 404       GURL(frame->top()->document().securityOrigin().toString()),
 405       local, &result));
 406   cached_storage_permissions_[key] = result;
 407   return result;
 408 }
 409
 410 bool ContentSettingsObserver::allowReadFromClipboard(bool default_value) {
 411   bool allowed = false;
 412 #if defined(ENABLE_EXTENSIONS)
 413   WebFrame* frame = render_frame()->GetWebFrame();
 414   // TODO(dcheng): Should we consider a toURL() method on WebSecurityOrigin?
 415   Send(new ChromeViewHostMsg_CanTriggerClipboardRead(
 416       GURL(frame->document().securityOrigin().toString()), &allowed));
 417 #endif
 418   return allowed;
 419 }
 420
 421 bool ContentSettingsObserver::allowWriteToClipboard(bool default_value) {
 422   bool allowed = false;
 423 #if defined(ENABLE_EXTENSIONS)
 424   WebFrame* frame = render_frame()->GetWebFrame();
 425   Send(new ChromeViewHostMsg_CanTriggerClipboardWrite(
 426       GURL(frame->document().securityOrigin().toString()), &allowed));
 427 #endif
 428   return allowed;
 429 }
 430
 431 bool ContentSettingsObserver::allowMutationEvents(bool default_value) {
 432   return IsPlatformApp() ? false : default_value;
 433 }
 434
 435 bool ContentSettingsObserver::allowPushState() {
 436   return !IsPlatformApp();
 437 }
 438
 439 static void SendInsecureContentSignal(int signal) {
 440   UMA_HISTOGRAM_ENUMERATION("SSL.InsecureContent", signal,
 441                             INSECURE_CONTENT_NUM_EVENTS);
 442 }
 443
 444 bool ContentSettingsObserver::allowDisplayingInsecureContent(
 445     bool allowed_per_settings,
 446     const blink::WebSecurityOrigin& origin,
 447     const blink::WebURL& resource_url) {
 448   SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY);
 449
 450   std::string origin_host(origin.host().utf8());
 451   WebFrame* frame = render_frame()->GetWebFrame();
 452   GURL frame_gurl(frame->document().url());
 453   if (IsHostInDomain(origin_host, kGoogleDotCom)) {
 454     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_GOOGLE);
 455     if (StartsWithASCII(frame_gurl.path(), kGoogleSupportPathPrefix, false)) {
 456       SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_GOOGLE_SUPPORT);
 457     } else if (StartsWithASCII(frame_gurl.path(),
 458                                kGoogleIntlPathPrefix,
 459                                false)) {
 460       SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_GOOGLE_INTL);
 461     }
 462   }
 463
 464   if (origin_host == kWWWDotGoogleDotCom) {
 465     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_WWW_GOOGLE);
 466     if (StartsWithASCII(frame_gurl.path(), kGoogleReaderPathPrefix, false))
 467       SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_GOOGLE_READER);
 468   } else if (origin_host == kMailDotGoogleDotCom) {
 469     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_MAIL_GOOGLE);
 470   } else if (origin_host == kPlusDotGoogleDotCom) {
 471     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_PLUS_GOOGLE);
 472   } else if (origin_host == kDocsDotGoogleDotCom) {
 473     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_DOCS_GOOGLE);
 474   } else if (origin_host == kSitesDotGoogleDotCom) {
 475     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_SITES_GOOGLE);
 476   } else if (origin_host == kPicasawebDotGoogleDotCom) {
 477     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_PICASAWEB_GOOGLE);
 478   } else if (origin_host == kCodeDotGoogleDotCom) {
 479     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_CODE_GOOGLE);
 480   } else if (origin_host == kGroupsDotGoogleDotCom) {
 481     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_GROUPS_GOOGLE);
 482   } else if (origin_host == kMapsDotGoogleDotCom) {
 483     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_MAPS_GOOGLE);
 484   } else if (origin_host == kWWWDotYoutubeDotCom) {
 485     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HOST_YOUTUBE);
 486   }
 487
 488   GURL resource_gurl(resource_url);
 489   if (EndsWith(resource_gurl.path(), kDotHTML, false))
 490     SendInsecureContentSignal(INSECURE_CONTENT_DISPLAY_HTML);
 491
 492   if (allowed_per_settings || allow_displaying_insecure_content_)
 493     return true;
 494
 495   Send(new ChromeViewHostMsg_DidBlockDisplayingInsecureContent(routing_id()));
 496
 497   return false;
 498 }
 499
 500 bool ContentSettingsObserver::allowRunningInsecureContent(
 501     bool allowed_per_settings,
 502     const blink::WebSecurityOrigin& origin,
 503     const blink::WebURL& resource_url) {
 504   std::string origin_host(origin.host().utf8());
 505   WebFrame* frame = render_frame()->GetWebFrame();
 506   GURL frame_gurl(frame->document().url());
 507   DCHECK_EQ(frame_gurl.host(), origin_host);
 508
 509   bool is_google = IsHostInDomain(origin_host, kGoogleDotCom);
 510   if (is_google) {
 511     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_GOOGLE);
 512     if (StartsWithASCII(frame_gurl.path(), kGoogleSupportPathPrefix, false)) {
 513       SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_GOOGLE_SUPPORT);
 514     } else if (StartsWithASCII(frame_gurl.path(),
 515                                kGoogleIntlPathPrefix,
 516                                false)) {
 517       SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_GOOGLE_INTL);
 518     }
 519   }
 520
 521   if (origin_host == kWWWDotGoogleDotCom) {
 522     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_WWW_GOOGLE);
 523     if (StartsWithASCII(frame_gurl.path(), kGoogleReaderPathPrefix, false))
 524       SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_GOOGLE_READER);
 525   } else if (origin_host == kMailDotGoogleDotCom) {
 526     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_MAIL_GOOGLE);
 527   } else if (origin_host == kPlusDotGoogleDotCom) {
 528     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_PLUS_GOOGLE);
 529   } else if (origin_host == kDocsDotGoogleDotCom) {
 530     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_DOCS_GOOGLE);
 531   } else if (origin_host == kSitesDotGoogleDotCom) {
 532     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_SITES_GOOGLE);
 533   } else if (origin_host == kPicasawebDotGoogleDotCom) {
 534     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_PICASAWEB_GOOGLE);
 535   } else if (origin_host == kCodeDotGoogleDotCom) {
 536     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_CODE_GOOGLE);
 537   } else if (origin_host == kGroupsDotGoogleDotCom) {
 538     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_GROUPS_GOOGLE);
 539   } else if (origin_host == kMapsDotGoogleDotCom) {
 540     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_MAPS_GOOGLE);
 541   } else if (origin_host == kWWWDotYoutubeDotCom) {
 542     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_YOUTUBE);
 543   } else if (EndsWith(origin_host, kDotGoogleUserContentDotCom, false)) {
 544     SendInsecureContentSignal(INSECURE_CONTENT_RUN_HOST_GOOGLEUSERCONTENT);
 545   }
 546
 547   GURL resource_gurl(resource_url);
 548   if (resource_gurl.host() == kWWWDotYoutubeDotCom)
 549     SendInsecureContentSignal(INSECURE_CONTENT_RUN_TARGET_YOUTUBE);
 550
 551   if (EndsWith(resource_gurl.path(), kDotJS, false))
 552     SendInsecureContentSignal(INSECURE_CONTENT_RUN_JS);
 553   else if (EndsWith(resource_gurl.path(), kDotCSS, false))
 554     SendInsecureContentSignal(INSECURE_CONTENT_RUN_CSS);
 555   else if (EndsWith(resource_gurl.path(), kDotSWF, false))
 556     SendInsecureContentSignal(INSECURE_CONTENT_RUN_SWF);
 557
 558   if (!allow_running_insecure_content_ && !allowed_per_settings) {
 559     DidBlockContentType(CONTENT_SETTINGS_TYPE_MIXEDSCRIPT);
 560     return false;
 561   }
 562
 563   return true;
 564 }
 565
 566 void ContentSettingsObserver::didNotAllowPlugins() {
 567   DidBlockContentType(CONTENT_SETTINGS_TYPE_PLUGINS);
 568 }
 569
 570 void ContentSettingsObserver::didNotAllowScript() {
 571   DidBlockContentType(CONTENT_SETTINGS_TYPE_JAVASCRIPT);
 572 }
 573
 574 bool ContentSettingsObserver::AreNPAPIPluginsBlocked() const {
 575   return npapi_plugins_blocked_;
 576 }
 577
 578 void ContentSettingsObserver::OnLoadBlockedPlugins(
 579     const std::string& identifier) {
 580   temporarily_allowed_plugins_.insert(identifier);
 581 }
 582
 583 void ContentSettingsObserver::OnSetAsInterstitial() {
 584   is_interstitial_page_ = true;
 585 }
 586
 587 void ContentSettingsObserver::OnNPAPINotSupported() {
 588   npapi_plugins_blocked_ = true;
 589 }
 590
 591 void ContentSettingsObserver::OnSetAllowDisplayingInsecureContent(bool allow) {
 592   allow_displaying_insecure_content_ = allow;
 593 }
 594
 595 void ContentSettingsObserver::OnSetAllowRunningInsecureContent(bool allow) {
 596   allow_running_insecure_content_ = allow;
 597   OnSetAllowDisplayingInsecureContent(allow);
 598 }
 599
 600 void ContentSettingsObserver::OnReloadFrame() {
 601   DCHECK(!render_frame()->GetWebFrame()->parent()) <<
 602       "Should only be called on the main frame";
 603   render_frame()->GetWebFrame()->reload();
 604 }
 605
 606 void ContentSettingsObserver::OnRequestFileSystemAccessAsyncResponse(
 607     int request_id,
 608     bool allowed) {
 609   PermissionRequestMap::iterator it = permission_requests_.find(request_id);
 610   if (it == permission_requests_.end())
 611     return;
 612
 613   WebPermissionCallbacks callbacks = it->second;
 614   permission_requests_.erase(it);
 615
 616   if (allowed) {
 617     callbacks.doAllow();
 618     return;
 619   }
 620   callbacks.doDeny();
 621 }
 622
 623 void ContentSettingsObserver::ClearBlockedContentSettings() {
 624   for (size_t i = 0; i < arraysize(content_blocked_); ++i)
 625     content_blocked_[i] = false;
 626   cached_storage_permissions_.clear();
 627   cached_script_permissions_.clear();
 628 }
 629
 630 bool ContentSettingsObserver::IsPlatformApp() {
 631 #if defined(ENABLE_EXTENSIONS)
 632   WebFrame* frame = render_frame()->GetWebFrame();
 633   WebSecurityOrigin origin = frame->document().securityOrigin();
 634   const extensions::Extension* extension = GetExtension(origin);
 635   return extension && extension->is_platform_app();
 636 #else
 637   return false;
 638 #endif
 639 }
 640
 641 #if defined(ENABLE_EXTENSIONS)
 642 const extensions::Extension* ContentSettingsObserver::GetExtension(
 643     const WebSecurityOrigin& origin) const {
 644   if (!EqualsASCII(origin.protocol(), extensions::kExtensionScheme))
 645     return NULL;
 646
 647   const std::string extension_id = origin.host().utf8().data();
 648   if (!extension_dispatcher_->IsExtensionActive(extension_id))
 649     return NULL;
 650
 651   return extension_dispatcher_->extensions()->GetByID(extension_id);
 652 }
 653 #endif
 654
 655 bool ContentSettingsObserver::IsWhitelistedForContentSettings(
 656     content::RenderFrame* frame) {
 657   // Whitelist Instant processes.
 658   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInstantProcess))
 659     return true;
 660
 661   // Whitelist ftp directory listings, as they require JavaScript to function
 662   // properly.
 663   if (frame->IsFTPDirectoryListing())
 664     return true;
 665
 666   WebFrame* web_frame = frame->GetWebFrame();
 667   return IsWhitelistedForContentSettings(web_frame->document().securityOrigin(),
 668                                          web_frame->document().url());
 669 }
 670
 671 bool ContentSettingsObserver::IsWhitelistedForContentSettings(
 672     const WebSecurityOrigin& origin,
 673     const GURL& document_url) {
 674   if (document_url == GURL(content::kUnreachableWebDataURL))
 675     return true;
 676
 677   if (origin.isUnique())
 678     return false;  // Uninitialized document?
 679
 680   if (EqualsASCII(origin.protocol(), content::kChromeUIScheme))
 681     return true;  // Browser UI elements should still work.
 682
 683   if (EqualsASCII(origin.protocol(), content::kChromeDevToolsScheme))
 684     return true;  // DevTools UI elements should still work.
 685
 686 #if defined(ENABLE_EXTENSIONS)
 687   if (EqualsASCII(origin.protocol(), extensions::kExtensionScheme))
 688     return true;
 689 #endif
 690
 691   // TODO(creis, fsamuel): Remove this once the concept of swapped out
 692   // RenderFrames goes away.
 693   if (document_url == GURL(content::kSwappedOutURL))
 694     return true;
 695
 696   // If the scheme is file:, an empty file name indicates a directory listing,
 697   // which requires JavaScript to function properly.
 698   if (EqualsASCII(origin.protocol(), url::kFileScheme)) {
 699     return document_url.SchemeIs(url::kFileScheme) &&
 700            document_url.ExtractFileName().empty();
 701   }
 702
 703   return false;
 704 }