| // 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. |
| |
| #ifndef EXTENSIONS_BROWSER_UPDATER_EXTENSION_DOWNLOADER_H_ |
| #define EXTENSIONS_BROWSER_UPDATER_EXTENSION_DOWNLOADER_H_ |
| |
| #include <deque> |
| #include <map> |
| #include <memory> |
| #include <set> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/version.h" |
| #include "extensions/browser/updater/extension_downloader_delegate.h" |
| #include "extensions/browser/updater/manifest_fetch_data.h" |
| #include "extensions/browser/updater/request_queue.h" |
| #include "extensions/common/extension.h" |
| #include "extensions/common/update_manifest.h" |
| #include "google_apis/gaia/oauth2_token_service.h" |
| #include "net/url_request/url_fetcher_delegate.h" |
| #include "url/gurl.h" |
| |
| class IdentityProvider; |
| |
| namespace net { |
| class URLFetcher; |
| class URLRequestContextGetter; |
| class URLRequestStatus; |
| } |
| |
| namespace extensions { |
| |
| struct UpdateDetails { |
| UpdateDetails(const std::string& id, const base::Version& version); |
| ~UpdateDetails(); |
| |
| std::string id; |
| base::Version version; |
| }; |
| |
| class ExtensionCache; |
| class ExtensionDownloaderTestDelegate; |
| class ExtensionUpdaterTest; |
| |
| // A class that checks for updates of a given list of extensions, and downloads |
| // the crx file when updates are found. It uses a |ExtensionDownloaderDelegate| |
| // that takes ownership of the downloaded crx files, and handles events during |
| // the update check. |
| class ExtensionDownloader : public net::URLFetcherDelegate, |
| public OAuth2TokenService::Consumer { |
| public: |
| // A closure which constructs a new ExtensionDownloader to be owned by the |
| // caller. |
| typedef base::Callback<std::unique_ptr<ExtensionDownloader>( |
| ExtensionDownloaderDelegate* delegate)> |
| Factory; |
| |
| // |delegate| is stored as a raw pointer and must outlive the |
| // ExtensionDownloader. |
| ExtensionDownloader(ExtensionDownloaderDelegate* delegate, |
| net::URLRequestContextGetter* request_context); |
| ~ExtensionDownloader() override; |
| |
| // Adds |extension| to the list of extensions to check for updates. |
| // Returns false if the |extension| can't be updated due to invalid details. |
| // In that case, no callbacks will be performed on the |delegate_|. |
| // The |request_id| is passed on as is to the various |delegate_| callbacks. |
| // This is used for example by ExtensionUpdater to keep track of when |
| // potentially concurrent update checks complete. |
| bool AddExtension(const Extension& extension, int request_id); |
| |
| // Adds extension |id| to the list of extensions to check for updates. |
| // Returns false if the |id| can't be updated due to invalid details. |
| // In that case, no callbacks will be performed on the |delegate_|. |
| // The |request_id| is passed on as is to the various |delegate_| callbacks. |
| // This is used for example by ExtensionUpdater to keep track of when |
| // potentially concurrent update checks complete. |
| bool AddPendingExtension(const std::string& id, |
| const GURL& update_url, |
| int request_id); |
| |
| // Schedules a fetch of the manifest of all the extensions added with |
| // AddExtension() and AddPendingExtension(). |
| void StartAllPending(ExtensionCache* cache); |
| |
| // Schedules an update check of the blacklist. |
| void StartBlacklistUpdate(const std::string& version, |
| const ManifestFetchData::PingData& ping_data, |
| int request_id); |
| |
| // Sets an IdentityProvider to be used for OAuth2 authentication on protected |
| // Webstore downloads. |
| void SetWebstoreIdentityProvider( |
| std::unique_ptr<IdentityProvider> identity_provider); |
| |
| void set_brand_code(const std::string& brand_code) { |
| brand_code_ = brand_code; |
| } |
| |
| void set_manifest_query_params(const std::string& params) { |
| manifest_query_params_ = params; |
| } |
| |
| void set_ping_enabled_domain(const std::string& domain) { |
| ping_enabled_domain_ = domain; |
| } |
| |
| // Sets a test delegate to use by any instances of this class. The |delegate| |
| // should outlive all instances. |
| static void set_test_delegate(ExtensionDownloaderTestDelegate* delegate); |
| |
| // These are needed for unit testing, to help identify the correct mock |
| // URLFetcher objects. |
| static const int kManifestFetcherId = 1; |
| static const int kExtensionFetcherId = 2; |
| |
| // Update AppID for extension blacklist. |
| static const char kBlacklistAppID[]; |
| |
| static const int kMaxRetries = 10; |
| |
| private: |
| friend class ExtensionUpdaterTest; |
| |
| // These counters are bumped as extensions are added to be fetched. They |
| // are then recorded as UMA metrics when all the extensions have been added. |
| struct URLStats { |
| URLStats() |
| : no_url_count(0), |
| google_url_count(0), |
| other_url_count(0), |
| extension_count(0), |
| theme_count(0), |
| app_count(0), |
| platform_app_count(0), |
| pending_count(0) {} |
| |
| int no_url_count, google_url_count, other_url_count; |
| int extension_count, theme_count, app_count, platform_app_count, |
| pending_count; |
| }; |
| |
| // We need to keep track of some information associated with a url |
| // when doing a fetch. |
| struct ExtensionFetch { |
| ExtensionFetch(); |
| ExtensionFetch(const std::string& id, |
| const GURL& url, |
| const std::string& package_hash, |
| const std::string& version, |
| const std::set<int>& request_ids); |
| ~ExtensionFetch(); |
| |
| std::string id; |
| GURL url; |
| std::string package_hash; |
| std::string version; |
| std::set<int> request_ids; |
| |
| enum CredentialsMode { |
| CREDENTIALS_NONE = 0, |
| CREDENTIALS_OAUTH2_TOKEN, |
| CREDENTIALS_COOKIES, |
| }; |
| |
| // Indicates the type of credentials to include with this fetch. |
| CredentialsMode credentials; |
| |
| // Counts the number of times OAuth2 authentication has been attempted for |
| // this fetch. |
| int oauth2_attempt_count; |
| }; |
| |
| // Helper for AddExtension() and AddPendingExtension(). |
| bool AddExtensionData(const std::string& id, |
| const base::Version& version, |
| Manifest::Type extension_type, |
| const GURL& extension_update_url, |
| const std::string& update_url_data, |
| int request_id); |
| |
| // Adds all recorded stats taken so far to histogram counts. |
| void ReportStats() const; |
| |
| // Begins an update check. |
| void StartUpdateCheck(std::unique_ptr<ManifestFetchData> fetch_data); |
| |
| // Called by RequestQueue when a new manifest fetch request is started. |
| void CreateManifestFetcher(); |
| |
| // net::URLFetcherDelegate implementation. |
| void OnURLFetchComplete(const net::URLFetcher* source) override; |
| |
| // Handles the result of a manifest fetch. |
| void OnManifestFetchComplete(const GURL& url, |
| const net::URLRequestStatus& status, |
| int response_code, |
| const base::TimeDelta& backoff_delay, |
| const std::string& data); |
| |
| // Once a manifest is parsed, this starts fetches of any relevant crx files. |
| // If |results| is null, it means something went wrong when parsing it. |
| void HandleManifestResults(const ManifestFetchData* fetch_data, |
| const UpdateManifest::Results* results); |
| |
| // Given a list of potential updates, returns the indices of the ones that are |
| // applicable (are actually a new version, etc.) in |result|. |
| void DetermineUpdates(const ManifestFetchData& fetch_data, |
| const UpdateManifest::Results& possible_updates, |
| std::vector<int>* result); |
| |
| // Begins (or queues up) download of an updated extension. |
| void FetchUpdatedExtension(std::unique_ptr<ExtensionFetch> fetch_data); |
| |
| // Called by RequestQueue when a new extension fetch request is started. |
| void CreateExtensionFetcher(); |
| |
| // Handles the result of a crx fetch. |
| void OnCRXFetchComplete(const net::URLFetcher* source, |
| const GURL& url, |
| const net::URLRequestStatus& status, |
| int response_code, |
| const base::TimeDelta& backoff_delay); |
| |
| // Invokes OnExtensionDownloadFailed() on the |delegate_| for each extension |
| // in the set, with |error| as the reason for failure. |
| void NotifyExtensionsDownloadFailed(const std::set<std::string>& id_set, |
| const std::set<int>& request_ids, |
| ExtensionDownloaderDelegate::Error error); |
| |
| // Send a notification that an update was found for |id| that we'll |
| // attempt to download. |
| void NotifyUpdateFound(const std::string& id, const std::string& version); |
| |
| // Do real work of StartAllPending. If .crx cache is used, this function |
| // is called when cache is ready. |
| void DoStartAllPending(); |
| |
| // Notify delegate and remove ping results. |
| void NotifyDelegateDownloadFinished( |
| std::unique_ptr<ExtensionFetch> fetch_data, |
| bool from_cache, |
| const base::FilePath& crx_path, |
| bool file_ownership_passed); |
| |
| // Cached extension installation completed. If it was not successful, we will |
| // try to download it from the web store using already fetched manifest. |
| void CacheInstallDone(std::unique_ptr<ExtensionFetch> fetch_data, |
| bool installed); |
| |
| // Potentially updates an ExtensionFetch's authentication state and returns |
| // |true| if the fetch should be retried. Returns |false| if the failure was |
| // not related to authentication, leaving the ExtensionFetch data unmodified. |
| bool IterateFetchCredentialsAfterFailure(ExtensionFetch* fetch, |
| const net::URLRequestStatus& status, |
| int response_code); |
| |
| // OAuth2TokenService::Consumer implementation. |
| void OnGetTokenSuccess(const OAuth2TokenService::Request* request, |
| const std::string& access_token, |
| const base::Time& expiration_time) override; |
| void OnGetTokenFailure(const OAuth2TokenService::Request* request, |
| const GoogleServiceAuthError& error) override; |
| |
| ManifestFetchData* CreateManifestFetchData(const GURL& update_url, |
| int request_id); |
| |
| // The delegate that receives the crx files downloaded by the |
| // ExtensionDownloader, and that fills in optional ping and update url data. |
| ExtensionDownloaderDelegate* delegate_; |
| |
| // The request context to use for the URLFetchers. |
| scoped_refptr<net::URLRequestContextGetter> request_context_; |
| |
| // Collects UMA samples that are reported when ReportStats() is called. |
| URLStats url_stats_; |
| |
| // List of data on fetches we're going to do. We limit the number of |
| // extensions grouped together in one batch to avoid running into the limits |
| // on the length of http GET requests, so there might be multiple |
| // ManifestFetchData* objects with the same base_url. |
| using FetchMap = std::map<std::pair<int, GURL>, |
| std::vector<std::unique_ptr<ManifestFetchData>>>; |
| FetchMap fetches_preparing_; |
| |
| // Outstanding url fetch requests for manifests and updates. |
| std::unique_ptr<net::URLFetcher> manifest_fetcher_; |
| std::unique_ptr<net::URLFetcher> extension_fetcher_; |
| |
| // Pending manifests and extensions to be fetched when the appropriate fetcher |
| // is available. |
| RequestQueue<ManifestFetchData> manifests_queue_; |
| RequestQueue<ExtensionFetch> extensions_queue_; |
| |
| // Maps an extension-id to its PingResult data. |
| std::map<std::string, ExtensionDownloaderDelegate::PingResult> ping_results_; |
| |
| // Cache for .crx files. |
| ExtensionCache* extension_cache_; |
| |
| // An IdentityProvider which may be used for authentication on protected |
| // download requests. May be NULL. |
| std::unique_ptr<IdentityProvider> identity_provider_; |
| |
| // A Webstore download-scoped access token for the |identity_provider_|'s |
| // active account, if any. |
| std::string access_token_; |
| |
| // A pending token fetch request. |
| std::unique_ptr<OAuth2TokenService::Request> access_token_request_; |
| |
| // Brand code to include with manifest fetch queries if sending ping data. |
| std::string brand_code_; |
| |
| // Baseline parameters to include with manifest fetch queries. |
| std::string manifest_query_params_; |
| |
| // Domain to enable ping data. Ping data will be sent with manifest fetches |
| // to update URLs which match this domain. Defaults to empty (no domain). |
| std::string ping_enabled_domain_; |
| |
| // Used to create WeakPtrs to |this|. |
| base::WeakPtrFactory<ExtensionDownloader> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ExtensionDownloader); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // EXTENSIONS_BROWSER_UPDATER_EXTENSION_DOWNLOADER_H_ |