chrome/browser/extensions/activity_log/activity_log.cc

   1 // Copyright (c) 2011 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/browser/extensions/activity_log/activity_log.h"
   6
   7 #include <set>
   8 #include <vector>
   9
  10 #include "base/command_line.h"
  11 #include "base/json/json_string_value_serializer.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/logging.h"
  14 #include "base/strings/string_util.h"
  15 #include "base/strings/utf_string_conversions.h"
  16 #include "base/threading/thread_checker.h"
  17 #include "chrome/browser/extensions/activity_log/activity_action_constants.h"
  18 #include "chrome/browser/extensions/activity_log/counting_policy.h"
  19 #include "chrome/browser/extensions/activity_log/fullstream_ui_policy.h"
  20 #include "chrome/browser/extensions/api/activity_log_private/activity_log_private_api.h"
  21 #include "chrome/browser/extensions/extension_tab_util.h"
  22 #include "chrome/browser/prefs/pref_service_syncable.h"
  23 #include "chrome/browser/prerender/prerender_manager.h"
  24 #include "chrome/browser/prerender/prerender_manager_factory.h"
  25 #include "chrome/browser/profiles/profile.h"
  26 #include "chrome/browser/ui/browser.h"
  27 #include "chrome/common/chrome_constants.h"
  28 #include "chrome/common/chrome_switches.h"
  29 #include "chrome/common/pref_names.h"
  30 #include "content/public/browser/browser_thread.h"
  31 #include "content/public/browser/web_contents.h"
  32 #include "extensions/browser/extension_registry.h"
  33 #include "extensions/browser/extension_registry_factory.h"
  34 #include "extensions/browser/extension_system.h"
  35 #include "extensions/browser/extension_system_provider.h"
  36 #include "extensions/browser/extensions_browser_client.h"
  37 #include "extensions/common/extension.h"
  38 #include "extensions/common/one_shot_event.h"
  39 #include "third_party/re2/re2/re2.h"
  40 #include "url/gurl.h"
  41
  42 namespace constants = activity_log_constants;
  43
  44 namespace extensions {
  45
  46 namespace {
  47
  48 using constants::kArgUrlPlaceholder;
  49 using content::BrowserThread;
  50
  51 // If DOM API methods start with this string, we flag them as being of type
  52 // DomActionType::XHR.
  53 const char kDomXhrPrefix[] = "XMLHttpRequest.";
  54
  55 // Specifies a possible action to take to get an extracted URL in the ApiInfo
  56 // structure below.
  57 enum Transformation {
  58   NONE,
  59   DICT_LOOKUP,
  60   LOOKUP_TAB_ID,
  61 };
  62
  63 // Information about specific Chrome and DOM APIs, such as which contain
  64 // arguments that should be extracted into the arg_url field of an Action.
  65 struct ApiInfo {
  66   // The lookup key consists of the action_type and api_name in the Action
  67   // object.
  68   Action::ActionType action_type;
  69   const char* api_name;
  70
  71   // If non-negative, an index into args might contain a URL to be extracted
  72   // into arg_url.
  73   int arg_url_index;
  74
  75   // A transformation to apply to the data found at index arg_url_index in the
  76   // argument list.
  77   //
  78   // If NONE, the data is expected to be a string which is treated as a URL.
  79   //
  80   // If LOOKUP_TAB_ID, the data is either an integer which is treated as a tab
  81   // ID and translated (in the context of a provided Profile), or a list of tab
  82   // IDs which are translated.
  83   //
  84   // If DICT_LOOKUP, the data is expected to be a dictionary, and
  85   // arg_url_dict_path is a path (list of keys delimited by ".") where a URL
  86   // string is to be found.
  87   Transformation arg_url_transform;
  88   const char* arg_url_dict_path;
  89 };
  90
  91 static const ApiInfo kApiInfoTable[] = {
  92     // Tabs APIs that require tab ID translation
  93     {Action::ACTION_API_CALL, "tabs.connect", 0, LOOKUP_TAB_ID, NULL},
  94     {Action::ACTION_API_CALL, "tabs.detectLanguage", 0, LOOKUP_TAB_ID, NULL},
  95     {Action::ACTION_API_CALL, "tabs.duplicate", 0, LOOKUP_TAB_ID, NULL},
  96     {Action::ACTION_API_CALL, "tabs.executeScript", 0, LOOKUP_TAB_ID, NULL},
  97     {Action::ACTION_API_CALL, "tabs.get", 0, LOOKUP_TAB_ID, NULL},
  98     {Action::ACTION_API_CALL, "tabs.insertCSS", 0, LOOKUP_TAB_ID, NULL},
  99     {Action::ACTION_API_CALL, "tabs.move", 0, LOOKUP_TAB_ID, NULL},
 100     {Action::ACTION_API_CALL, "tabs.reload", 0, LOOKUP_TAB_ID, NULL},
 101     {Action::ACTION_API_CALL, "tabs.remove", 0, LOOKUP_TAB_ID, NULL},
 102     {Action::ACTION_API_CALL, "tabs.sendMessage", 0, LOOKUP_TAB_ID, NULL},
 103     {Action::ACTION_API_CALL, "tabs.update", 0, LOOKUP_TAB_ID, NULL},
 104     {Action::ACTION_API_EVENT, "tabs.onUpdated", 0, LOOKUP_TAB_ID, NULL},
 105     {Action::ACTION_API_EVENT, "tabs.onMoved", 0, LOOKUP_TAB_ID, NULL},
 106     {Action::ACTION_API_EVENT, "tabs.onDetached", 0, LOOKUP_TAB_ID, NULL},
 107     {Action::ACTION_API_EVENT, "tabs.onAttached", 0, LOOKUP_TAB_ID, NULL},
 108     {Action::ACTION_API_EVENT, "tabs.onRemoved", 0, LOOKUP_TAB_ID, NULL},
 109     {Action::ACTION_API_EVENT, "tabs.onReplaced", 0, LOOKUP_TAB_ID, NULL},
 110
 111     // Other APIs that accept URLs as strings
 112     {Action::ACTION_API_CALL, "bookmarks.create", 0, DICT_LOOKUP, "url"},
 113     {Action::ACTION_API_CALL, "bookmarks.update", 1, DICT_LOOKUP, "url"},
 114     {Action::ACTION_API_CALL, "cookies.get", 0, DICT_LOOKUP, "url"},
 115     {Action::ACTION_API_CALL, "cookies.getAll", 0, DICT_LOOKUP, "url"},
 116     {Action::ACTION_API_CALL, "cookies.remove", 0, DICT_LOOKUP, "url"},
 117     {Action::ACTION_API_CALL, "cookies.set", 0, DICT_LOOKUP, "url"},
 118     {Action::ACTION_API_CALL, "downloads.download", 0, DICT_LOOKUP, "url"},
 119     {Action::ACTION_API_CALL, "history.addUrl", 0, DICT_LOOKUP, "url"},
 120     {Action::ACTION_API_CALL, "history.deleteUrl", 0, DICT_LOOKUP, "url"},
 121     {Action::ACTION_API_CALL, "history.getVisits", 0, DICT_LOOKUP, "url"},
 122     {Action::ACTION_API_CALL, "webstore.install", 0, NONE, NULL},
 123     {Action::ACTION_API_CALL, "windows.create", 0, DICT_LOOKUP, "url"},
 124     {Action::ACTION_DOM_ACCESS, "Document.location", 0, NONE, NULL},
 125     {Action::ACTION_DOM_ACCESS, "HTMLAnchorElement.href", 0, NONE, NULL},
 126     {Action::ACTION_DOM_ACCESS, "HTMLButtonElement.formAction", 0, NONE, NULL},
 127     {Action::ACTION_DOM_ACCESS, "HTMLEmbedElement.src", 0, NONE, NULL},
 128     {Action::ACTION_DOM_ACCESS, "HTMLFormElement.action", 0, NONE, NULL},
 129     {Action::ACTION_DOM_ACCESS, "HTMLFrameElement.src", 0, NONE, NULL},
 130     {Action::ACTION_DOM_ACCESS, "HTMLHtmlElement.manifest", 0, NONE, NULL},
 131     {Action::ACTION_DOM_ACCESS, "HTMLIFrameElement.src", 0, NONE, NULL},
 132     {Action::ACTION_DOM_ACCESS, "HTMLImageElement.longDesc", 0, NONE, NULL},
 133     {Action::ACTION_DOM_ACCESS, "HTMLImageElement.src", 0, NONE, NULL},
 134     {Action::ACTION_DOM_ACCESS, "HTMLImageElement.lowsrc", 0, NONE, NULL},
 135     {Action::ACTION_DOM_ACCESS, "HTMLInputElement.formAction", 0, NONE, NULL},
 136     {Action::ACTION_DOM_ACCESS, "HTMLInputElement.src", 0, NONE, NULL},
 137     {Action::ACTION_DOM_ACCESS, "HTMLLinkElement.href", 0, NONE, NULL},
 138     {Action::ACTION_DOM_ACCESS, "HTMLMediaElement.src", 0, NONE, NULL},
 139     {Action::ACTION_DOM_ACCESS, "HTMLMediaElement.currentSrc", 0, NONE, NULL},
 140     {Action::ACTION_DOM_ACCESS, "HTMLModElement.cite", 0, NONE, NULL},
 141     {Action::ACTION_DOM_ACCESS, "HTMLObjectElement.data", 0, NONE, NULL},
 142     {Action::ACTION_DOM_ACCESS, "HTMLQuoteElement.cite", 0, NONE, NULL},
 143     {Action::ACTION_DOM_ACCESS, "HTMLScriptElement.src", 0, NONE, NULL},
 144     {Action::ACTION_DOM_ACCESS, "HTMLSourceElement.src", 0, NONE, NULL},
 145     {Action::ACTION_DOM_ACCESS, "HTMLTrackElement.src", 0, NONE, NULL},
 146     {Action::ACTION_DOM_ACCESS, "HTMLVideoElement.poster", 0, NONE, NULL},
 147     {Action::ACTION_DOM_ACCESS, "Location.assign", 0, NONE, NULL},
 148     {Action::ACTION_DOM_ACCESS, "Location.replace", 0, NONE, NULL},
 149     {Action::ACTION_DOM_ACCESS, "Window.location", 0, NONE, NULL},
 150     {Action::ACTION_DOM_ACCESS, "XMLHttpRequest.open", 1, NONE, NULL}};
 151
 152 // A singleton class which provides lookups into the kApiInfoTable data
 153 // structure.  It inserts all data into a map on first lookup.
 154 class ApiInfoDatabase {
 155  public:
 156   static ApiInfoDatabase* GetInstance() {
 157     return Singleton<ApiInfoDatabase>::get();
 158   }
 159
 160   // Retrieves an ApiInfo record for the given Action type.  Returns either a
 161   // pointer to the record, or NULL if no such record was found.
 162   const ApiInfo* Lookup(Action::ActionType action_type,
 163                         const std::string& api_name) const {
 164     std::map<std::string, const ApiInfo*>::const_iterator i =
 165         api_database_.find(api_name);
 166     if (i == api_database_.end())
 167       return NULL;
 168     if (i->second->action_type != action_type)
 169       return NULL;
 170     return i->second;
 171   }
 172
 173  private:
 174   ApiInfoDatabase() {
 175     for (size_t i = 0; i < arraysize(kApiInfoTable); i++) {
 176       const ApiInfo* info = &kApiInfoTable[i];
 177       api_database_[info->api_name] = info;
 178     }
 179   }
 180   virtual ~ApiInfoDatabase() {}
 181
 182   // The map is keyed by API name only, since API names aren't be repeated
 183   // across multiple action types in kApiInfoTable.  However, the action type
 184   // should still be checked before returning a positive match.
 185   std::map<std::string, const ApiInfo*> api_database_;
 186
 187   friend struct DefaultSingletonTraits<ApiInfoDatabase>;
 188   DISALLOW_COPY_AND_ASSIGN(ApiInfoDatabase);
 189 };
 190
 191 // Gets the URL for a given tab ID.  Helper method for ExtractUrls.  Returns
 192 // true if able to perform the lookup.  The URL is stored to *url, and
 193 // *is_incognito is set to indicate whether the URL is for an incognito tab.
 194 bool GetUrlForTabId(int tab_id,
 195                     Profile* profile,
 196                     GURL* url,
 197                     bool* is_incognito) {
 198   content::WebContents* contents = NULL;
 199   Browser* browser = NULL;
 200   bool found = ExtensionTabUtil::GetTabById(
 201       tab_id,
 202       profile,
 203       true,  // Search incognito tabs, too.
 204       &browser,
 205       NULL,
 206       &contents,
 207       NULL);
 208
 209   if (found) {
 210     *url = contents->GetURL();
 211     *is_incognito = browser->profile()->IsOffTheRecord();
 212     return true;
 213   } else {
 214     return false;
 215   }
 216 }
 217
 218 // Resolves an argument URL relative to a base page URL.  If the page URL is
 219 // not valid, then only absolute argument URLs are supported.
 220 bool ResolveUrl(const GURL& base, const std::string& arg, GURL* arg_out) {
 221   if (base.is_valid())
 222     *arg_out = base.Resolve(arg);
 223   else
 224     *arg_out = GURL(arg);
 225
 226   return arg_out->is_valid();
 227 }
 228
 229 // Performs processing of the Action object to extract URLs from the argument
 230 // list and translate tab IDs to URLs, according to the API call metadata in
 231 // kApiInfoTable.  Mutates the Action object in place.  There is a small chance
 232 // that the tab id->URL translation could be wrong, if the tab has already been
 233 // navigated by the time of invocation.
 234 //
 235 // Any extracted URL is stored into the arg_url field of the action, and the
 236 // URL in the argument list is replaced with the marker value "<arg_url>".  For
 237 // APIs that take a list of tab IDs, extracts the first valid URL into arg_url
 238 // and overwrites the other tab IDs in the argument list with the translated
 239 // URL.
 240 void ExtractUrls(scoped_refptr<Action> action, Profile* profile) {
 241   const ApiInfo* api_info = ApiInfoDatabase::GetInstance()->Lookup(
 242       action->action_type(), action->api_name());
 243   if (api_info == NULL)
 244     return;
 245
 246   int url_index = api_info->arg_url_index;
 247
 248   if (!action->args() || url_index < 0 ||
 249       static_cast<size_t>(url_index) >= action->args()->GetSize())
 250     return;
 251
 252   // Do not overwrite an existing arg_url value in the Action, so that callers
 253   // have the option of doing custom arg_url extraction.
 254   if (action->arg_url().is_valid())
 255     return;
 256
 257   GURL arg_url;
 258   bool arg_incognito = action->page_incognito();
 259
 260   switch (api_info->arg_url_transform) {
 261     case NONE: {
 262       // No translation needed; just extract the URL directly from a raw string
 263       // or from a dictionary.  Succeeds if we can find a string in the
 264       // argument list and that the string resolves to a valid URL.
 265       std::string url_string;
 266       if (action->args()->GetString(url_index, &url_string) &&
 267           ResolveUrl(action->page_url(), url_string, &arg_url)) {
 268         action->mutable_args()->Set(url_index,
 269                                     new base::StringValue(kArgUrlPlaceholder));
 270       }
 271       break;
 272     }
 273
 274     case DICT_LOOKUP: {
 275       CHECK(api_info->arg_url_dict_path);
 276       // Look up the URL from a dictionary at the specified location.  Succeeds
 277       // if we can find a dictionary in the argument list, the dictionary
 278       // contains the specified key, and the corresponding value resolves to a
 279       // valid URL.
 280       base::DictionaryValue* dict = NULL;
 281       std::string url_string;
 282       if (action->mutable_args()->GetDictionary(url_index, &dict) &&
 283           dict->GetString(api_info->arg_url_dict_path, &url_string) &&
 284           ResolveUrl(action->page_url(), url_string, &arg_url)) {
 285         dict->SetString(api_info->arg_url_dict_path, kArgUrlPlaceholder);
 286       }
 287       break;
 288     }
 289
 290     case LOOKUP_TAB_ID: {
 291       // Translation of tab IDs to URLs has been requested.  There are two
 292       // cases to consider: either a single integer or a list of integers (when
 293       // multiple tabs are manipulated).
 294       int tab_id;
 295       base::ListValue* tab_list = NULL;
 296       if (action->args()->GetInteger(url_index, &tab_id)) {
 297         // Single tab ID to translate.
 298         GetUrlForTabId(tab_id, profile, &arg_url, &arg_incognito);
 299         if (arg_url.is_valid()) {
 300           action->mutable_args()->Set(
 301               url_index, new base::StringValue(kArgUrlPlaceholder));
 302         }
 303       } else if (action->mutable_args()->GetList(url_index, &tab_list)) {
 304         // A list of possible IDs to translate.  Work through in reverse order
 305         // so the last one translated is left in arg_url.
 306         int extracted_index = -1;  // Which list item is copied to arg_url?
 307         for (int i = tab_list->GetSize() - 1; i >= 0; --i) {
 308           if (tab_list->GetInteger(i, &tab_id) &&
 309               GetUrlForTabId(tab_id, profile, &arg_url, &arg_incognito)) {
 310             if (!arg_incognito)
 311               tab_list->Set(i, new base::StringValue(arg_url.spec()));
 312             extracted_index = i;
 313           }
 314         }
 315         if (extracted_index >= 0) {
 316           tab_list->Set(
 317               extracted_index, new base::StringValue(kArgUrlPlaceholder));
 318         }
 319       }
 320       break;
 321     }
 322
 323     default:
 324       NOTREACHED();
 325   }
 326
 327   if (arg_url.is_valid()) {
 328     action->set_arg_incognito(arg_incognito);
 329     action->set_arg_url(arg_url);
 330   }
 331 }
 332
 333 }  // namespace
 334
 335 // SET THINGS UP. --------------------------------------------------------------
 336
 337 static base::LazyInstance<BrowserContextKeyedAPIFactory<ActivityLog> >
 338     g_factory = LAZY_INSTANCE_INITIALIZER;
 339
 340 BrowserContextKeyedAPIFactory<ActivityLog>* ActivityLog::GetFactoryInstance() {
 341   return g_factory.Pointer();
 342 }
 343
 344 // static
 345 ActivityLog* ActivityLog::GetInstance(content::BrowserContext* context) {
 346   return ActivityLog::GetFactoryInstance()->Get(
 347       Profile::FromBrowserContext(context));
 348 }
 349
 350 // Use GetInstance instead of directly creating an ActivityLog.
 351 ActivityLog::ActivityLog(content::BrowserContext* context)
 352     : database_policy_(NULL),
 353       database_policy_type_(ActivityLogPolicy::POLICY_INVALID),
 354       profile_(Profile::FromBrowserContext(context)),
 355       db_enabled_(false),
 356       testing_mode_(false),
 357       has_threads_(true),
 358       extension_registry_observer_(this),
 359       watchdog_apps_active_(0) {
 360   // This controls whether logging statements are printed & which policy is set.
 361   testing_mode_ = base::CommandLine::ForCurrentProcess()->HasSwitch(
 362       switches::kEnableExtensionActivityLogTesting);
 363
 364   // Check if the watchdog extension is previously installed and active.
 365   watchdog_apps_active_ =
 366       profile_->GetPrefs()->GetInteger(prefs::kWatchdogExtensionActive);
 367
 368   observers_ = new base::ObserverListThreadSafe<Observer>;
 369
 370   // Check that the right threads exist for logging to the database.
 371   // If not, we shouldn't try to do things that require them.
 372   if (!BrowserThread::IsMessageLoopValid(BrowserThread::DB) ||
 373       !BrowserThread::IsMessageLoopValid(BrowserThread::FILE) ||
 374       !BrowserThread::IsMessageLoopValid(BrowserThread::IO)) {
 375     has_threads_ = false;
 376   }
 377
 378   db_enabled_ =
 379       has_threads_ && (base::CommandLine::ForCurrentProcess()->HasSwitch(
 380                            switches::kEnableExtensionActivityLogging) ||
 381                        watchdog_apps_active_);
 382
 383   extension_registry_observer_.Add(ExtensionRegistry::Get(profile_));
 384   ChooseDatabasePolicy();
 385 }
 386
 387 void ActivityLog::SetDatabasePolicy(
 388     ActivityLogPolicy::PolicyType policy_type) {
 389   if (database_policy_type_ == policy_type)
 390     return;
 391   if (!IsDatabaseEnabled() && !IsWatchdogAppActive())
 392     return;
 393
 394   // Deleting the old policy takes place asynchronously, on the database
 395   // thread.  Initializing a new policy below similarly happens
 396   // asynchronously.  Since the two operations are both queued for the
 397   // database, the queue ordering should ensure that the deletion completes
 398   // before database initialization occurs.
 399   //
 400   // However, changing policies at runtime is still not recommended, and
 401   // likely only should be done for unit tests.
 402   if (database_policy_)
 403     database_policy_->Close();
 404
 405   switch (policy_type) {
 406     case ActivityLogPolicy::POLICY_FULLSTREAM:
 407       database_policy_ = new FullStreamUIPolicy(profile_);
 408       break;
 409     case ActivityLogPolicy::POLICY_COUNTS:
 410       database_policy_ = new CountingPolicy(profile_);
 411       break;
 412     default:
 413       NOTREACHED();
 414   }
 415   database_policy_->Init();
 416   database_policy_type_ = policy_type;
 417 }
 418
 419 ActivityLog::~ActivityLog() {
 420   if (database_policy_)
 421     database_policy_->Close();
 422 }
 423
 424 // MAINTAIN STATUS. ------------------------------------------------------------
 425
 426 void ActivityLog::ChooseDatabasePolicy() {
 427   if (!(IsDatabaseEnabled() || IsWatchdogAppActive()))
 428     return;
 429   if (testing_mode_)
 430     SetDatabasePolicy(ActivityLogPolicy::POLICY_FULLSTREAM);
 431   else
 432     SetDatabasePolicy(ActivityLogPolicy::POLICY_COUNTS);
 433 }
 434
 435 bool ActivityLog::IsDatabaseEnabled() {
 436   // Make sure we are not enabled when there are no threads.
 437   DCHECK(has_threads_ || !db_enabled_);
 438   return db_enabled_;
 439 }
 440
 441 bool ActivityLog::IsWatchdogAppActive() {
 442   return (watchdog_apps_active_ > 0);
 443 }
 444
 445 void ActivityLog::SetWatchdogAppActiveForTesting(bool active) {
 446   watchdog_apps_active_ = active ? 1 : 0;
 447 }
 448
 449 void ActivityLog::OnExtensionLoaded(content::BrowserContext* browser_context,
 450                                     const Extension* extension) {
 451   if (!ActivityLogAPI::IsExtensionWhitelisted(extension->id())) return;
 452   if (has_threads_)
 453     db_enabled_ = true;
 454   watchdog_apps_active_++;
 455   profile_->GetPrefs()->SetInteger(prefs::kWatchdogExtensionActive,
 456                                    watchdog_apps_active_);
 457   if (watchdog_apps_active_ == 1)
 458     ChooseDatabasePolicy();
 459 }
 460
 461 void ActivityLog::OnExtensionUnloaded(content::BrowserContext* browser_context,
 462                                       const Extension* extension,
 463                                       UnloadedExtensionInfo::Reason reason) {
 464   if (!ActivityLogAPI::IsExtensionWhitelisted(extension->id())) return;
 465   watchdog_apps_active_--;
 466   profile_->GetPrefs()->SetInteger(prefs::kWatchdogExtensionActive,
 467                                    watchdog_apps_active_);
 468   if (watchdog_apps_active_ == 0 &&
 469       !base::CommandLine::ForCurrentProcess()->HasSwitch(
 470           switches::kEnableExtensionActivityLogging)) {
 471     db_enabled_ = false;
 472   }
 473 }
 474
 475 // OnExtensionUnloaded will also be called right before this.
 476 void ActivityLog::OnExtensionUninstalled(
 477     content::BrowserContext* browser_context,
 478     const Extension* extension,
 479     extensions::UninstallReason reason) {
 480   if (ActivityLogAPI::IsExtensionWhitelisted(extension->id()) &&
 481       !base::CommandLine::ForCurrentProcess()->HasSwitch(
 482           switches::kEnableExtensionActivityLogging) &&
 483       watchdog_apps_active_ == 0) {
 484     DeleteDatabase();
 485   } else if (database_policy_) {
 486     database_policy_->RemoveExtensionData(extension->id());
 487   }
 488 }
 489
 490 void ActivityLog::AddObserver(ActivityLog::Observer* observer) {
 491   observers_->AddObserver(observer);
 492 }
 493
 494 void ActivityLog::RemoveObserver(ActivityLog::Observer* observer) {
 495   observers_->RemoveObserver(observer);
 496 }
 497
 498 // static
 499 void ActivityLog::RegisterProfilePrefs(
 500     user_prefs::PrefRegistrySyncable* registry) {
 501   registry->RegisterIntegerPref(prefs::kWatchdogExtensionActive, false);
 502 }
 503
 504 // LOG ACTIONS. ----------------------------------------------------------------
 505
 506 void ActivityLog::LogAction(scoped_refptr<Action> action) {
 507   if (ActivityLogAPI::IsExtensionWhitelisted(action->extension_id()))
 508     return;
 509
 510   // Perform some preprocessing of the Action data: convert tab IDs to URLs and
 511   // mask out incognito URLs if appropriate.
 512   ExtractUrls(action, profile_);
 513
 514   // Mark DOM XHR requests as such, for easier processing later.
 515   if (action->action_type() == Action::ACTION_DOM_ACCESS &&
 516       base::StartsWith(action->api_name(), kDomXhrPrefix,
 517                        base::CompareCase::SENSITIVE) &&
 518       action->other()) {
 519     base::DictionaryValue* other = action->mutable_other();
 520     int dom_verb = -1;
 521     if (other->GetInteger(constants::kActionDomVerb, &dom_verb) &&
 522         dom_verb == DomActionType::METHOD) {
 523       other->SetInteger(constants::kActionDomVerb, DomActionType::XHR);
 524     }
 525   }
 526
 527   if (IsDatabaseEnabled() && database_policy_)
 528     database_policy_->ProcessAction(action);
 529   if (IsWatchdogAppActive())
 530     observers_->Notify(FROM_HERE, &Observer::OnExtensionActivity, action);
 531   if (testing_mode_)
 532     VLOG(1) << action->PrintForDebug();
 533 }
 534
 535 void ActivityLog::OnScriptsExecuted(
 536     const content::WebContents* web_contents,
 537     const ExecutingScriptsMap& extension_ids,
 538     const GURL& on_url) {
 539   Profile* profile =
 540       Profile::FromBrowserContext(web_contents->GetBrowserContext());
 541   ExtensionRegistry* registry = ExtensionRegistry::Get(profile);
 542   for (ExecutingScriptsMap::const_iterator it = extension_ids.begin();
 543        it != extension_ids.end(); ++it) {
 544     const Extension* extension =
 545         registry->GetExtensionById(it->first, ExtensionRegistry::ENABLED);
 546     if (!extension || ActivityLogAPI::IsExtensionWhitelisted(extension->id()))
 547       continue;
 548
 549     // If OnScriptsExecuted is fired because of tabs.executeScript, the list
 550     // of content scripts will be empty.  We don't want to log it because
 551     // the call to tabs.executeScript will have already been logged anyway.
 552     if (!it->second.empty()) {
 553       scoped_refptr<Action> action;
 554       action = new Action(extension->id(),
 555                           base::Time::Now(),
 556                           Action::ACTION_CONTENT_SCRIPT,
 557                           "");  // no API call here
 558       action->set_page_url(on_url);
 559       action->set_page_title(base::UTF16ToUTF8(web_contents->GetTitle()));
 560       action->set_page_incognito(
 561           web_contents->GetBrowserContext()->IsOffTheRecord());
 562
 563       const prerender::PrerenderManager* prerender_manager =
 564           prerender::PrerenderManagerFactory::GetForProfile(profile);
 565       if (prerender_manager &&
 566           prerender_manager->IsWebContentsPrerendering(web_contents, NULL))
 567         action->mutable_other()->SetBoolean(constants::kActionPrerender, true);
 568       for (std::set<std::string>::const_iterator it2 = it->second.begin();
 569            it2 != it->second.end();
 570            ++it2) {
 571         action->mutable_args()->AppendString(*it2);
 572       }
 573       LogAction(action);
 574     }
 575   }
 576 }
 577
 578 void ActivityLog::OnApiEventDispatched(const std::string& extension_id,
 579                                        const std::string& event_name,
 580                                        scoped_ptr<base::ListValue> event_args) {
 581   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 582   scoped_refptr<Action> action = new Action(extension_id,
 583                                             base::Time::Now(),
 584                                             Action::ACTION_API_EVENT,
 585                                             event_name);
 586   action->set_args(event_args.Pass());
 587   LogAction(action);
 588 }
 589
 590 void ActivityLog::OnApiFunctionCalled(const std::string& extension_id,
 591                                       const std::string& api_name,
 592                                       scoped_ptr<base::ListValue> args) {
 593   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 594   scoped_refptr<Action> action = new Action(extension_id,
 595                                             base::Time::Now(),
 596                                             Action::ACTION_API_CALL,
 597                                             api_name);
 598   action->set_args(args.Pass());
 599   LogAction(action);
 600 }
 601
 602 // LOOKUP ACTIONS. -------------------------------------------------------------
 603
 604 void ActivityLog::GetFilteredActions(
 605     const std::string& extension_id,
 606     const Action::ActionType type,
 607     const std::string& api_name,
 608     const std::string& page_url,
 609     const std::string& arg_url,
 610     const int daysAgo,
 611     const base::Callback
 612         <void(scoped_ptr<std::vector<scoped_refptr<Action> > >)>& callback) {
 613   if (database_policy_) {
 614     database_policy_->ReadFilteredData(
 615         extension_id, type, api_name, page_url, arg_url, daysAgo, callback);
 616   }
 617 }
 618
 619 // DELETE ACTIONS. -------------------------------------------------------------
 620
 621 void ActivityLog::RemoveActions(const std::vector<int64>& action_ids) {
 622   if (!database_policy_)
 623     return;
 624   database_policy_->RemoveActions(action_ids);
 625 }
 626
 627 void ActivityLog::RemoveURLs(const std::vector<GURL>& restrict_urls) {
 628   if (!database_policy_)
 629     return;
 630   database_policy_->RemoveURLs(restrict_urls);
 631 }
 632
 633 void ActivityLog::RemoveURLs(const std::set<GURL>& restrict_urls) {
 634   if (!database_policy_)
 635     return;
 636
 637   std::vector<GURL> urls;
 638   for (std::set<GURL>::const_iterator it = restrict_urls.begin();
 639        it != restrict_urls.end(); ++it) {
 640     urls.push_back(*it);
 641   }
 642   database_policy_->RemoveURLs(urls);
 643 }
 644
 645 void ActivityLog::RemoveURL(const GURL& url) {
 646   if (url.is_empty())
 647     return;
 648   std::vector<GURL> urls;
 649   urls.push_back(url);
 650   RemoveURLs(urls);
 651 }
 652
 653 void ActivityLog::DeleteDatabase() {
 654   if (!database_policy_)
 655     return;
 656   database_policy_->DeleteDatabase();
 657 }
 658
 659 template <>
 660 void BrowserContextKeyedAPIFactory<ActivityLog>::DeclareFactoryDependencies() {
 661   DependsOn(ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
 662   DependsOn(ExtensionRegistryFactory::GetInstance());
 663 }
 664
 665 }  // namespace extensions