chrome/browser/extensions/api/identity/identity_api.h

   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 #ifndef CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11 #include <utility>
  12 #include <vector>
  13
  14 #include "base/memory/ref_counted.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "base/observer_list.h"
  17 #include "chrome/browser/extensions/api/identity/extension_token_key.h"
  18 #include "chrome/browser/extensions/api/identity/gaia_web_auth_flow.h"
  19 #include "chrome/browser/extensions/api/identity/identity_mint_queue.h"
  20 #include "chrome/browser/extensions/api/identity/identity_signin_flow.h"
  21 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
  22 #include "chrome/browser/extensions/chrome_extension_function.h"
  23 #include "components/signin/core/browser/profile_identity_provider.h"
  24 #include "extensions/browser/browser_context_keyed_api_factory.h"
  25 #include "google_apis/gaia/account_tracker.h"
  26 #include "google_apis/gaia/oauth2_mint_token_flow.h"
  27 #include "google_apis/gaia/oauth2_token_service.h"
  28
  29 class GoogleServiceAuthError;
  30 class MockGetAuthTokenFunction;
  31
  32 namespace content {
  33 class BrowserContext;
  34 }
  35
  36 namespace extensions {
  37
  38 class GetAuthTokenFunctionTest;
  39 class MockGetAuthTokenFunction;
  40
  41 namespace identity_constants {
  42 extern const char kInvalidClientId[];
  43 extern const char kInvalidScopes[];
  44 extern const char kAuthFailure[];
  45 extern const char kNoGrant[];
  46 extern const char kUserRejected[];
  47 extern const char kUserNotSignedIn[];
  48 extern const char kInteractionRequired[];
  49 extern const char kInvalidRedirect[];
  50 extern const char kOffTheRecord[];
  51 extern const char kPageLoadFailure[];
  52 extern const char kCanceled[];
  53 }  // namespace identity_constants
  54
  55 class IdentityTokenCacheValue {
  56  public:
  57   IdentityTokenCacheValue();
  58   explicit IdentityTokenCacheValue(const IssueAdviceInfo& issue_advice);
  59   IdentityTokenCacheValue(const std::string& token,
  60                           base::TimeDelta time_to_live);
  61   ~IdentityTokenCacheValue();
  62
  63   // Order of these entries is used to determine whether or not new
  64   // entries supercede older ones in SetCachedToken.
  65   enum CacheValueStatus {
  66     CACHE_STATUS_NOTFOUND,
  67     CACHE_STATUS_ADVICE,
  68     CACHE_STATUS_TOKEN
  69   };
  70
  71   CacheValueStatus status() const;
  72   const IssueAdviceInfo& issue_advice() const;
  73   const std::string& token() const;
  74   const base::Time& expiration_time() const;
  75
  76  private:
  77   bool is_expired() const;
  78
  79   CacheValueStatus status_;
  80   IssueAdviceInfo issue_advice_;
  81   std::string token_;
  82   base::Time expiration_time_;
  83 };
  84
  85 class IdentityAPI : public BrowserContextKeyedAPI,
  86                     public gaia::AccountTracker::Observer {
  87  public:
  88   typedef std::map<ExtensionTokenKey, IdentityTokenCacheValue> CachedTokens;
  89
  90   class ShutdownObserver {
  91    public:
  92     virtual void OnShutdown() = 0;
  93   };
  94
  95   explicit IdentityAPI(content::BrowserContext* context);
  96   ~IdentityAPI() override;
  97
  98   // Request serialization queue for getAuthToken.
  99   IdentityMintRequestQueue* mint_queue();
 100
 101   // Token cache
 102   void SetCachedToken(const ExtensionTokenKey& key,
 103                       const IdentityTokenCacheValue& token_data);
 104   void EraseCachedToken(const std::string& extension_id,
 105                         const std::string& token);
 106   void EraseAllCachedTokens();
 107   const IdentityTokenCacheValue& GetCachedToken(const ExtensionTokenKey& key);
 108
 109   const CachedTokens& GetAllCachedTokens();
 110
 111   // Account queries.
 112   std::vector<std::string> GetAccounts() const;
 113   std::string FindAccountKeyByGaiaId(const std::string& gaia_id);
 114
 115   // BrowserContextKeyedAPI implementation.
 116   void Shutdown() override;
 117   static BrowserContextKeyedAPIFactory<IdentityAPI>* GetFactoryInstance();
 118
 119   // gaia::AccountTracker::Observer implementation:
 120   void OnAccountAdded(const gaia::AccountIds& ids) override;
 121   void OnAccountRemoved(const gaia::AccountIds& ids) override;
 122   void OnAccountSignInChanged(const gaia::AccountIds& ids,
 123                               bool is_signed_in) override;
 124
 125   void AddShutdownObserver(ShutdownObserver* observer);
 126   void RemoveShutdownObserver(ShutdownObserver* observer);
 127
 128   void SetAccountStateForTest(gaia::AccountIds ids, bool is_signed_in);
 129
 130  private:
 131   friend class BrowserContextKeyedAPIFactory<IdentityAPI>;
 132
 133   // BrowserContextKeyedAPI implementation.
 134   static const char* service_name() { return "IdentityAPI"; }
 135   static const bool kServiceIsNULLWhileTesting = true;
 136
 137   content::BrowserContext* browser_context_;
 138   IdentityMintRequestQueue mint_queue_;
 139   CachedTokens token_cache_;
 140   ProfileIdentityProvider profile_identity_provider_;
 141   gaia::AccountTracker account_tracker_;
 142   base::ObserverList<ShutdownObserver> shutdown_observer_list_;
 143 };
 144
 145 template <>
 146 void BrowserContextKeyedAPIFactory<IdentityAPI>::DeclareFactoryDependencies();
 147
 148 class IdentityGetAccountsFunction : public ChromeUIThreadExtensionFunction {
 149  public:
 150   DECLARE_EXTENSION_FUNCTION("identity.getAccounts",
 151                              IDENTITY_GETACCOUNTS);
 152
 153   IdentityGetAccountsFunction();
 154
 155  private:
 156   ~IdentityGetAccountsFunction() override;
 157
 158   // UIThreadExtensionFunction implementation.
 159   ExtensionFunction::ResponseAction Run() override;
 160 };
 161
 162 // identity.getAuthToken fetches an OAuth 2 function for the
 163 // caller. The request has three sub-flows: non-interactive,
 164 // interactive, and sign-in.
 165 //
 166 // In the non-interactive flow, getAuthToken requests a token from
 167 // GAIA. GAIA may respond with a token, an error, or "consent
 168 // required". In the consent required cases, getAuthToken proceeds to
 169 // the second, interactive phase.
 170 //
 171 // The interactive flow presents a scope approval dialog to the
 172 // user. If the user approves the request, a grant will be recorded on
 173 // the server, and an access token will be returned to the caller.
 174 //
 175 // In some cases we need to display a sign-in dialog. Normally the
 176 // profile will be signed in already, but if it turns out we need a
 177 // new login token, there is a sign-in flow. If that flow completes
 178 // successfully, getAuthToken proceeds to the non-interactive flow.
 179 class IdentityGetAuthTokenFunction : public ChromeAsyncExtensionFunction,
 180                                      public GaiaWebAuthFlow::Delegate,
 181                                      public IdentityMintRequestQueue::Request,
 182                                      public OAuth2MintTokenFlow::Delegate,
 183                                      public IdentitySigninFlow::Delegate,
 184                                      public OAuth2TokenService::Consumer,
 185                                      public IdentityAPI::ShutdownObserver {
 186  public:
 187   DECLARE_EXTENSION_FUNCTION("identity.getAuthToken",
 188                              EXPERIMENTAL_IDENTITY_GETAUTHTOKEN);
 189
 190   IdentityGetAuthTokenFunction();
 191
 192   const ExtensionTokenKey* GetExtensionTokenKeyForTest() {
 193     return token_key_.get();
 194   }
 195
 196  protected:
 197   ~IdentityGetAuthTokenFunction() override;
 198
 199   // IdentitySigninFlow::Delegate implementation:
 200   void SigninSuccess() override;
 201   void SigninFailed() override;
 202
 203   // GaiaWebAuthFlow::Delegate implementation:
 204   void OnGaiaFlowFailure(GaiaWebAuthFlow::Failure failure,
 205                          GoogleServiceAuthError service_error,
 206                          const std::string& oauth_error) override;
 207   void OnGaiaFlowCompleted(const std::string& access_token,
 208                            const std::string& expiration) override;
 209
 210   // Starts a login access token request.
 211   virtual void StartLoginAccessTokenRequest();
 212
 213   // OAuth2TokenService::Consumer implementation:
 214   void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
 215                          const std::string& access_token,
 216                          const base::Time& expiration_time) override;
 217   void OnGetTokenFailure(const OAuth2TokenService::Request* request,
 218                          const GoogleServiceAuthError& error) override;
 219
 220   // Starts a mint token request to GAIA.
 221   // Exposed for testing.
 222   virtual void StartGaiaRequest(const std::string& login_access_token);
 223
 224   // Caller owns the returned instance.
 225   // Exposed for testing.
 226   virtual OAuth2MintTokenFlow* CreateMintTokenFlow();
 227
 228   scoped_ptr<OAuth2TokenService::Request> login_token_request_;
 229
 230  private:
 231   FRIEND_TEST_ALL_PREFIXES(GetAuthTokenFunctionTest,
 232                            ComponentWithChromeClientId);
 233   FRIEND_TEST_ALL_PREFIXES(GetAuthTokenFunctionTest,
 234                            ComponentWithNormalClientId);
 235   FRIEND_TEST_ALL_PREFIXES(GetAuthTokenFunctionTest, InteractiveQueueShutdown);
 236   FRIEND_TEST_ALL_PREFIXES(GetAuthTokenFunctionTest, NoninteractiveShutdown);
 237
 238   // ExtensionFunction:
 239   bool RunAsync() override;
 240
 241   // Helpers to report async function results to the caller.
 242   void StartAsyncRun();
 243   void CompleteAsyncRun(bool success);
 244   void CompleteFunctionWithResult(const std::string& access_token);
 245   void CompleteFunctionWithError(const std::string& error);
 246
 247   // Initiate/complete the sub-flows.
 248   void StartSigninFlow();
 249   void StartMintTokenFlow(IdentityMintRequestQueue::MintType type);
 250   void CompleteMintTokenFlow();
 251
 252   // IdentityMintRequestQueue::Request implementation:
 253   void StartMintToken(IdentityMintRequestQueue::MintType type) override;
 254
 255   // OAuth2MintTokenFlow::Delegate implementation:
 256   void OnMintTokenSuccess(const std::string& access_token,
 257                           int time_to_live) override;
 258   void OnMintTokenFailure(const GoogleServiceAuthError& error) override;
 259   void OnIssueAdviceSuccess(const IssueAdviceInfo& issue_advice) override;
 260
 261   // IdentityAPI::ShutdownObserver implementation:
 262   void OnShutdown() override;
 263
 264 #if defined(OS_CHROMEOS)
 265   // Starts a login access token request for device robot account. This method
 266   // will be called only in enterprise kiosk mode in ChromeOS.
 267   virtual void StartDeviceLoginAccessTokenRequest();
 268 #endif
 269
 270   // Methods for invoking UI. Overridable for testing.
 271   virtual void ShowLoginPopup();
 272   virtual void ShowOAuthApprovalDialog(const IssueAdviceInfo& issue_advice);
 273
 274   // Checks if there is a master login token to mint tokens for the extension.
 275   bool HasLoginToken() const;
 276
 277   // Maps OAuth2 protocol errors to an error message returned to the
 278   // developer in chrome.runtime.lastError.
 279   std::string MapOAuth2ErrorToDescription(const std::string& error);
 280
 281   std::string GetOAuth2ClientId() const;
 282
 283   bool interactive_;
 284   bool should_prompt_for_scopes_;
 285   IdentityMintRequestQueue::MintType mint_token_flow_type_;
 286   scoped_ptr<OAuth2MintTokenFlow> mint_token_flow_;
 287   OAuth2MintTokenFlow::Mode gaia_mint_token_mode_;
 288   bool should_prompt_for_signin_;
 289
 290   scoped_ptr<ExtensionTokenKey> token_key_;
 291   std::string oauth2_client_id_;
 292   // When launched in interactive mode, and if there is no existing grant,
 293   // a permissions prompt will be popped up to the user.
 294   IssueAdviceInfo issue_advice_;
 295   scoped_ptr<GaiaWebAuthFlow> gaia_web_auth_flow_;
 296   scoped_ptr<IdentitySigninFlow> signin_flow_;
 297 };
 298
 299 class IdentityGetProfileUserInfoFunction
 300     : public ChromeUIThreadExtensionFunction {
 301  public:
 302   DECLARE_EXTENSION_FUNCTION("identity.getProfileUserInfo",
 303                              IDENTITY_GETPROFILEUSERINFO);
 304
 305   IdentityGetProfileUserInfoFunction();
 306
 307  private:
 308   ~IdentityGetProfileUserInfoFunction() override;
 309
 310   // UIThreadExtensionFunction implementation.
 311   ExtensionFunction::ResponseAction Run() override;
 312 };
 313
 314 class IdentityRemoveCachedAuthTokenFunction
 315     : public ChromeSyncExtensionFunction {
 316  public:
 317   DECLARE_EXTENSION_FUNCTION("identity.removeCachedAuthToken",
 318                              EXPERIMENTAL_IDENTITY_REMOVECACHEDAUTHTOKEN)
 319   IdentityRemoveCachedAuthTokenFunction();
 320
 321  protected:
 322   ~IdentityRemoveCachedAuthTokenFunction() override;
 323
 324   // SyncExtensionFunction implementation:
 325   bool RunSync() override;
 326 };
 327
 328 class IdentityLaunchWebAuthFlowFunction : public ChromeAsyncExtensionFunction,
 329                                           public WebAuthFlow::Delegate {
 330  public:
 331   DECLARE_EXTENSION_FUNCTION("identity.launchWebAuthFlow",
 332                              EXPERIMENTAL_IDENTITY_LAUNCHWEBAUTHFLOW);
 333
 334   IdentityLaunchWebAuthFlowFunction();
 335
 336   // Tests may override extension_id.
 337   void InitFinalRedirectURLPrefixForTest(const std::string& extension_id);
 338
 339  private:
 340   ~IdentityLaunchWebAuthFlowFunction() override;
 341   bool RunAsync() override;
 342
 343   // WebAuthFlow::Delegate implementation.
 344   void OnAuthFlowFailure(WebAuthFlow::Failure failure) override;
 345   void OnAuthFlowURLChange(const GURL& redirect_url) override;
 346   void OnAuthFlowTitleChange(const std::string& title) override {}
 347
 348   // Helper to initialize final URL prefix.
 349   void InitFinalRedirectURLPrefix(const std::string& extension_id);
 350
 351   scoped_ptr<WebAuthFlow> auth_flow_;
 352   GURL final_url_prefix_;
 353 };
 354
 355 }  // namespace extensions
 356
 357 #endif  // CHROME_BROWSER_EXTENSIONS_API_IDENTITY_IDENTITY_API_H_