src/google_apis/gaia/fake_gaia.cc

   1 // Copyright (c) 2013 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 "google_apis/gaia/fake_gaia.h"
   6
   7 #include <vector>
   8
   9 #include "base/base_paths.h"
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/file_util.h"
  13 #include "base/files/file_path.h"
  14 #include "base/json/json_writer.h"
  15 #include "base/logging.h"
  16 #include "base/memory/linked_ptr.h"
  17 #include "base/path_service.h"
  18 #include "base/strings/string_number_conversions.h"
  19 #include "base/strings/string_split.h"
  20 #include "base/strings/string_util.h"
  21 #include "base/strings/stringprintf.h"
  22 #include "base/values.h"
  23 #include "google_apis/gaia/gaia_constants.h"
  24 #include "google_apis/gaia/gaia_urls.h"
  25 #include "net/base/url_util.h"
  26 #include "net/cookies/parsed_cookie.h"
  27 #include "net/http/http_status_code.h"
  28 #include "net/test/embedded_test_server/http_request.h"
  29 #include "net/test/embedded_test_server/http_response.h"
  30 #include "url/url_parse.h"
  31
  32 #define REGISTER_RESPONSE_HANDLER(url, method) \
  33   request_handlers_.insert(std::make_pair( \
  34         url.path(), base::Bind(&FakeGaia::method, base::Unretained(this))))
  35
  36 #define REGISTER_PATH_RESPONSE_HANDLER(path, method) \
  37   request_handlers_.insert(std::make_pair( \
  38         path, base::Bind(&FakeGaia::method, base::Unretained(this))))
  39
  40 using namespace net::test_server;
  41
  42 namespace {
  43
  44 const base::FilePath::CharType kServiceLogin[] =
  45     FILE_PATH_LITERAL("google_apis/test/service_login.html");
  46
  47 // OAuth2 Authentication header value prefix.
  48 const char kAuthHeaderBearer[] = "Bearer ";
  49 const char kAuthHeaderOAuth[] = "OAuth ";
  50
  51 const char kListAccountsResponseFormat[] =
  52     "[\"gaia.l.a.r\",[[\"gaia.l.a\",1,\"\",\"%s\",\"\",1,1,0]]]";
  53
  54 typedef std::map<std::string, std::string> CookieMap;
  55
  56 // Parses cookie name-value map our of |request|.
  57 CookieMap GetRequestCookies(const HttpRequest& request) {
  58   CookieMap result;
  59   std::map<std::string, std::string>::const_iterator iter =
  60            request.headers.find("Cookie");
  61   if (iter != request.headers.end()) {
  62     std::vector<std::string> cookie_nv_pairs;
  63     base::SplitString(iter->second, ' ', &cookie_nv_pairs);
  64     for(std::vector<std::string>::const_iterator cookie_line =
  65             cookie_nv_pairs.begin();
  66         cookie_line != cookie_nv_pairs.end();
  67         ++cookie_line) {
  68       std::vector<std::string> name_value;
  69       base::SplitString(*cookie_line, '=', &name_value);
  70       if (name_value.size() != 2)
  71         continue;
  72
  73       std::string value = name_value[1];
  74       if (value.size() && value[value.size() - 1] == ';')
  75         value = value.substr(0, value.size() -1);
  76
  77       result.insert(std::make_pair(name_value[0], value));
  78     }
  79   }
  80   return result;
  81 }
  82
  83 // Extracts the |access_token| from authorization header of |request|.
  84 bool GetAccessToken(const HttpRequest& request,
  85                     const char* auth_token_prefix,
  86                     std::string* access_token) {
  87   std::map<std::string, std::string>::const_iterator auth_header_entry =
  88       request.headers.find("Authorization");
  89   if (auth_header_entry != request.headers.end()) {
  90     if (StartsWithASCII(auth_header_entry->second, auth_token_prefix, true)) {
  91       *access_token = auth_header_entry->second.substr(
  92           strlen(auth_token_prefix));
  93       return true;
  94     }
  95   }
  96
  97   return false;
  98 }
  99
 100 void SetCookies(BasicHttpResponse* http_response,
 101                 const std::string& sid_cookie,
 102                 const std::string& lsid_cookie) {
 103   http_response->AddCustomHeader(
 104       "Set-Cookie",
 105       base::StringPrintf("SID=%s; Path=/; HttpOnly", sid_cookie.c_str()));
 106   http_response->AddCustomHeader(
 107       "Set-Cookie",
 108       base::StringPrintf("LSID=%s; Path=/; HttpOnly", lsid_cookie.c_str()));
 109 }
 110
 111 }  // namespace
 112
 113 FakeGaia::AccessTokenInfo::AccessTokenInfo()
 114   : expires_in(3600) {}
 115
 116 FakeGaia::AccessTokenInfo::~AccessTokenInfo() {}
 117
 118 FakeGaia::MergeSessionParams::MergeSessionParams() {
 119 }
 120
 121 FakeGaia::MergeSessionParams::~MergeSessionParams() {
 122 }
 123
 124 FakeGaia::FakeGaia() {
 125   base::FilePath source_root_dir;
 126   PathService::Get(base::DIR_SOURCE_ROOT, &source_root_dir);
 127   CHECK(base::ReadFileToString(
 128       source_root_dir.Append(base::FilePath(kServiceLogin)),
 129       &service_login_response_));
 130 }
 131
 132 FakeGaia::~FakeGaia() {}
 133
 134 void FakeGaia::SetMergeSessionParams(
 135     const MergeSessionParams& params) {
 136   merge_session_params_ = params;
 137 }
 138
 139 void FakeGaia::Initialize() {
 140   GaiaUrls* gaia_urls = GaiaUrls::GetInstance();
 141   // Handles /MergeSession GAIA call.
 142   REGISTER_RESPONSE_HANDLER(
 143       gaia_urls->merge_session_url(), HandleMergeSession);
 144
 145   // Handles /o/oauth2/programmatic_auth GAIA call.
 146   REGISTER_RESPONSE_HANDLER(
 147       gaia_urls->client_login_to_oauth2_url(), HandleProgramaticAuth);
 148
 149   // Handles /ServiceLogin GAIA call.
 150   REGISTER_RESPONSE_HANDLER(
 151       gaia_urls->service_login_url(), HandleServiceLogin);
 152
 153   // Handles /OAuthLogin GAIA call.
 154   REGISTER_RESPONSE_HANDLER(
 155       gaia_urls->oauth1_login_url(), HandleOAuthLogin);
 156
 157   // Handles /ServiceLoginAuth GAIA call.
 158   REGISTER_RESPONSE_HANDLER(
 159       gaia_urls->service_login_auth_url(), HandleServiceLoginAuth);
 160
 161   // Handles /SSO GAIA call (not GAIA, made up for SAML tests).
 162   REGISTER_PATH_RESPONSE_HANDLER("/SSO", HandleSSO);
 163
 164   // Handles /o/oauth2/token GAIA call.
 165   REGISTER_RESPONSE_HANDLER(
 166       gaia_urls->oauth2_token_url(), HandleAuthToken);
 167
 168   // Handles /oauth2/v2/tokeninfo GAIA call.
 169   REGISTER_RESPONSE_HANDLER(
 170       gaia_urls->oauth2_token_info_url(), HandleTokenInfo);
 171
 172   // Handles /oauth2/v2/IssueToken GAIA call.
 173   REGISTER_RESPONSE_HANDLER(
 174       gaia_urls->oauth2_issue_token_url(), HandleIssueToken);
 175
 176   // Handles /ListAccounts GAIA call.
 177   REGISTER_RESPONSE_HANDLER(
 178       gaia_urls->list_accounts_url(), HandleListAccounts);
 179 }
 180
 181 scoped_ptr<HttpResponse> FakeGaia::HandleRequest(const HttpRequest& request) {
 182   // The scheme and host of the URL is actually not important but required to
 183   // get a valid GURL in order to parse |request.relative_url|.
 184   GURL request_url = GURL("http://localhost").Resolve(request.relative_url);
 185   std::string request_path = request_url.path();
 186   scoped_ptr<BasicHttpResponse> http_response(new BasicHttpResponse());
 187   RequestHandlerMap::iterator iter = request_handlers_.find(request_path);
 188   if (iter != request_handlers_.end()) {
 189     LOG(WARNING) << "Serving request " << request_path;
 190     iter->second.Run(request, http_response.get());
 191   } else {
 192     LOG(ERROR) << "Unhandled request " << request_path;
 193     return scoped_ptr<HttpResponse>();      // Request not understood.
 194   }
 195
 196   return http_response.PassAs<HttpResponse>();
 197 }
 198
 199 void FakeGaia::IssueOAuthToken(const std::string& auth_token,
 200                                const AccessTokenInfo& token_info) {
 201   access_token_info_map_.insert(std::make_pair(auth_token, token_info));
 202 }
 203
 204 void FakeGaia::RegisterSamlUser(const std::string& account_id,
 205                                 const GURL& saml_idp) {
 206   saml_account_idp_map_[account_id] = saml_idp;
 207 }
 208
 209 // static
 210 bool FakeGaia::GetQueryParameter(const std::string& query,
 211                                  const std::string& key,
 212                                  std::string* value) {
 213   // Name and scheme actually don't matter, but are required to get a valid URL
 214   // for parsing.
 215   GURL query_url("http://localhost?" + query);
 216   return net::GetValueForKeyInQuery(query_url, key, value);
 217 }
 218
 219 void FakeGaia::HandleMergeSession(const HttpRequest& request,
 220                                   BasicHttpResponse* http_response) {
 221   http_response->set_code(net::HTTP_UNAUTHORIZED);
 222   if (merge_session_params_.session_sid_cookie.empty() ||
 223       merge_session_params_.session_lsid_cookie.empty()) {
 224     http_response->set_code(net::HTTP_BAD_REQUEST);
 225     return;
 226   }
 227
 228   std::string uber_token;
 229   if (!GetQueryParameter(request.content, "uberauth", &uber_token) ||
 230       uber_token != merge_session_params_.gaia_uber_token) {
 231     LOG(ERROR) << "Missing or invalid 'uberauth' param in /MergeSession call";
 232     return;
 233   }
 234
 235   std::string continue_url;
 236   if (!GetQueryParameter(request.content, "continue", &continue_url)) {
 237     LOG(ERROR) << "Missing or invalid 'continue' param in /MergeSession call";
 238     return;
 239   }
 240
 241   std::string source;
 242   if (!GetQueryParameter(request.content, "source", &source)) {
 243     LOG(ERROR) << "Missing or invalid 'source' param in /MergeSession call";
 244     return;
 245   }
 246
 247   SetCookies(http_response,
 248              merge_session_params_.session_sid_cookie,
 249              merge_session_params_.session_lsid_cookie);
 250   // TODO(zelidrag): Not used now.
 251   http_response->set_content("OK");
 252   http_response->set_code(net::HTTP_OK);
 253 }
 254
 255 void FakeGaia::HandleProgramaticAuth(
 256     const HttpRequest& request,
 257     BasicHttpResponse* http_response) {
 258   http_response->set_code(net::HTTP_UNAUTHORIZED);
 259   if (merge_session_params_.auth_code.empty()) {
 260     http_response->set_code(net::HTTP_BAD_REQUEST);
 261     return;
 262   }
 263
 264   GaiaUrls* gaia_urls = GaiaUrls::GetInstance();
 265   std::string scope;
 266   if (!GetQueryParameter(request.content, "scope", &scope) ||
 267       GaiaConstants::kOAuth1LoginScope != scope) {
 268     return;
 269   }
 270
 271   CookieMap cookies = GetRequestCookies(request);
 272   CookieMap::const_iterator sid_iter = cookies.find("SID");
 273   if (sid_iter == cookies.end() ||
 274       sid_iter->second != merge_session_params_.auth_sid_cookie) {
 275     LOG(ERROR) << "/o/oauth2/programmatic_auth missing SID cookie";
 276     return;
 277   }
 278   CookieMap::const_iterator lsid_iter = cookies.find("LSID");
 279   if (lsid_iter == cookies.end() ||
 280       lsid_iter->second != merge_session_params_.auth_lsid_cookie) {
 281     LOG(ERROR) << "/o/oauth2/programmatic_auth missing LSID cookie";
 282     return;
 283   }
 284
 285   std::string client_id;
 286   if (!GetQueryParameter(request.content, "client_id", &client_id) ||
 287       gaia_urls->oauth2_chrome_client_id() != client_id) {
 288     return;
 289   }
 290
 291   http_response->AddCustomHeader(
 292       "Set-Cookie",
 293       base::StringPrintf(
 294           "oauth_code=%s; Path=/o/GetOAuth2Token; Secure; HttpOnly;",
 295           merge_session_params_.auth_code.c_str()));
 296   http_response->set_code(net::HTTP_OK);
 297   http_response->set_content_type("text/html");
 298 }
 299
 300 void FakeGaia::FormatJSONResponse(const base::DictionaryValue& response_dict,
 301                                   BasicHttpResponse* http_response) {
 302   std::string response_json;
 303   base::JSONWriter::Write(&response_dict, &response_json);
 304   http_response->set_content(response_json);
 305   http_response->set_code(net::HTTP_OK);
 306 }
 307
 308 const FakeGaia::AccessTokenInfo* FakeGaia::FindAccessTokenInfo(
 309     const std::string& auth_token,
 310     const std::string& client_id,
 311     const std::string& scope_string) const {
 312   if (auth_token.empty() || client_id.empty())
 313     return NULL;
 314
 315   std::vector<std::string> scope_list;
 316   base::SplitString(scope_string, ' ', &scope_list);
 317   ScopeSet scopes(scope_list.begin(), scope_list.end());
 318
 319   for (AccessTokenInfoMap::const_iterator entry(
 320            access_token_info_map_.lower_bound(auth_token));
 321        entry != access_token_info_map_.upper_bound(auth_token);
 322        ++entry) {
 323     if (entry->second.audience == client_id &&
 324         (scope_string.empty() || entry->second.scopes == scopes)) {
 325       return &(entry->second);
 326     }
 327   }
 328
 329   return NULL;
 330 }
 331
 332 void FakeGaia::HandleServiceLogin(const HttpRequest& request,
 333                                   BasicHttpResponse* http_response) {
 334   http_response->set_code(net::HTTP_OK);
 335   http_response->set_content(service_login_response_);
 336   http_response->set_content_type("text/html");
 337 }
 338
 339 void FakeGaia::HandleOAuthLogin(const HttpRequest& request,
 340                                 BasicHttpResponse* http_response) {
 341   http_response->set_code(net::HTTP_UNAUTHORIZED);
 342   if (merge_session_params_.gaia_uber_token.empty()) {
 343     http_response->set_code(net::HTTP_FORBIDDEN);
 344     return;
 345   }
 346
 347   std::string access_token;
 348   if (!GetAccessToken(request, kAuthHeaderOAuth, &access_token)) {
 349     LOG(ERROR) << "/OAuthLogin missing access token in the header";
 350     return;
 351   }
 352
 353   GURL request_url = GURL("http://localhost").Resolve(request.relative_url);
 354   std::string request_query = request_url.query();
 355
 356   std::string source;
 357   if (!GetQueryParameter(request_query, "source", &source)) {
 358     LOG(ERROR) << "Missing 'source' param in /OAuthLogin call";
 359     return;
 360   }
 361
 362   std::string issue_uberauth;
 363   if (GetQueryParameter(request_query, "issueuberauth", &issue_uberauth) &&
 364       issue_uberauth == "1") {
 365     http_response->set_content(merge_session_params_.gaia_uber_token);
 366     http_response->set_code(net::HTTP_OK);
 367     // Issue GAIA uber token.
 368   } else {
 369     LOG(FATAL) << "/OAuthLogin for SID/LSID is not supported";
 370   }
 371 }
 372
 373 void FakeGaia::HandleServiceLoginAuth(const HttpRequest& request,
 374                                       BasicHttpResponse* http_response) {
 375   std::string continue_url =
 376       GaiaUrls::GetInstance()->service_login_url().spec();
 377   GetQueryParameter(request.content, "continue", &continue_url);
 378
 379   std::string redirect_url = continue_url;
 380
 381   std::string email;
 382   if (GetQueryParameter(request.content, "Email", &email) &&
 383       saml_account_idp_map_.find(email) != saml_account_idp_map_.end()) {
 384     GURL url(saml_account_idp_map_[email]);
 385     url = net::AppendQueryParameter(url, "SAMLRequest", "fake_request");
 386     url = net::AppendQueryParameter(url, "RelayState", continue_url);
 387     redirect_url = url.spec();
 388     http_response->AddCustomHeader("Google-Accounts-SAML", "Start");
 389   } else if (!merge_session_params_.auth_sid_cookie.empty() &&
 390              !merge_session_params_.auth_lsid_cookie.empty()) {
 391     SetCookies(http_response,
 392                merge_session_params_.auth_sid_cookie,
 393                merge_session_params_.auth_lsid_cookie);
 394   }
 395
 396   http_response->set_code(net::HTTP_TEMPORARY_REDIRECT);
 397   http_response->AddCustomHeader("Location", redirect_url);
 398 }
 399
 400 void FakeGaia::HandleSSO(const HttpRequest& request,
 401                          BasicHttpResponse* http_response) {
 402   if (!merge_session_params_.auth_sid_cookie.empty() &&
 403       !merge_session_params_.auth_lsid_cookie.empty()) {
 404     SetCookies(http_response,
 405                merge_session_params_.auth_sid_cookie,
 406                merge_session_params_.auth_lsid_cookie);
 407   }
 408   std::string relay_state;
 409   GetQueryParameter(request.content, "RelayState", &relay_state);
 410   std::string redirect_url = relay_state;
 411   http_response->set_code(net::HTTP_TEMPORARY_REDIRECT);
 412   http_response->AddCustomHeader("Location", redirect_url);
 413   http_response->AddCustomHeader("Google-Accounts-SAML", "End");
 414 }
 415
 416 void FakeGaia::HandleAuthToken(const HttpRequest& request,
 417                                BasicHttpResponse* http_response) {
 418   std::string scope;
 419   GetQueryParameter(request.content, "scope", &scope);
 420
 421   std::string grant_type;
 422   if (!GetQueryParameter(request.content, "grant_type", &grant_type)) {
 423     http_response->set_code(net::HTTP_BAD_REQUEST);
 424     LOG(ERROR) << "No 'grant_type' param in /o/oauth2/token";
 425     return;
 426   }
 427
 428   if (grant_type == "authorization_code") {
 429     std::string auth_code;
 430     if (!GetQueryParameter(request.content, "code", &auth_code) ||
 431         auth_code != merge_session_params_.auth_code) {
 432       http_response->set_code(net::HTTP_BAD_REQUEST);
 433       LOG(ERROR) << "No 'code' param in /o/oauth2/token";
 434       return;
 435     }
 436
 437     if (GaiaConstants::kOAuth1LoginScope != scope) {
 438       http_response->set_code(net::HTTP_BAD_REQUEST);
 439       LOG(ERROR) << "Invalid scope for /o/oauth2/token - " << scope;
 440       return;
 441     }
 442
 443     base::DictionaryValue response_dict;
 444     response_dict.SetString("refresh_token",
 445                             merge_session_params_.refresh_token);
 446     response_dict.SetString("access_token",
 447                             merge_session_params_.access_token);
 448     response_dict.SetInteger("expires_in", 3600);
 449     FormatJSONResponse(response_dict, http_response);
 450     return;
 451   }
 452
 453   std::string refresh_token;
 454   std::string client_id;
 455   if (GetQueryParameter(request.content, "refresh_token", &refresh_token) &&
 456       GetQueryParameter(request.content, "client_id", &client_id)) {
 457     const AccessTokenInfo* token_info =
 458         FindAccessTokenInfo(refresh_token, client_id, scope);
 459     if (token_info) {
 460       base::DictionaryValue response_dict;
 461       response_dict.SetString("access_token", token_info->token);
 462       response_dict.SetInteger("expires_in", 3600);
 463       FormatJSONResponse(response_dict, http_response);
 464       return;
 465     }
 466   }
 467
 468   LOG(ERROR) << "Bad request for /o/oauth2/token - "
 469               << "refresh_token = " << refresh_token
 470               << ", scope = " << scope
 471               << ", client_id = " << client_id;
 472   http_response->set_code(net::HTTP_BAD_REQUEST);
 473 }
 474
 475 void FakeGaia::HandleTokenInfo(const HttpRequest& request,
 476                                BasicHttpResponse* http_response) {
 477   const AccessTokenInfo* token_info = NULL;
 478   std::string access_token;
 479   if (GetQueryParameter(request.content, "access_token", &access_token)) {
 480     for (AccessTokenInfoMap::const_iterator entry(
 481              access_token_info_map_.begin());
 482          entry != access_token_info_map_.end();
 483          ++entry) {
 484       if (entry->second.token == access_token) {
 485         token_info = &(entry->second);
 486         break;
 487       }
 488     }
 489   }
 490
 491   if (token_info) {
 492     base::DictionaryValue response_dict;
 493     response_dict.SetString("issued_to", token_info->issued_to);
 494     response_dict.SetString("audience", token_info->audience);
 495     response_dict.SetString("user_id", token_info->user_id);
 496     std::vector<std::string> scope_vector(token_info->scopes.begin(),
 497                                           token_info->scopes.end());
 498     response_dict.SetString("scope", JoinString(scope_vector, " "));
 499     response_dict.SetInteger("expires_in", token_info->expires_in);
 500     response_dict.SetString("email", token_info->email);
 501     FormatJSONResponse(response_dict, http_response);
 502   } else {
 503     http_response->set_code(net::HTTP_BAD_REQUEST);
 504   }
 505 }
 506
 507 void FakeGaia::HandleIssueToken(const HttpRequest& request,
 508                                 BasicHttpResponse* http_response) {
 509   std::string access_token;
 510   std::string scope;
 511   std::string client_id;
 512   if (GetAccessToken(request, kAuthHeaderBearer, &access_token) &&
 513       GetQueryParameter(request.content, "scope", &scope) &&
 514       GetQueryParameter(request.content, "client_id", &client_id)) {
 515     const AccessTokenInfo* token_info =
 516         FindAccessTokenInfo(access_token, client_id, scope);
 517     if (token_info) {
 518       base::DictionaryValue response_dict;
 519       response_dict.SetString("issueAdvice", "auto");
 520       response_dict.SetString("expiresIn",
 521                               base::IntToString(token_info->expires_in));
 522       response_dict.SetString("token", token_info->token);
 523       FormatJSONResponse(response_dict, http_response);
 524       return;
 525     }
 526   }
 527   http_response->set_code(net::HTTP_BAD_REQUEST);
 528 }
 529
 530 void FakeGaia::HandleListAccounts(const HttpRequest& request,
 531                                  BasicHttpResponse* http_response) {
 532   http_response->set_content(base::StringPrintf(
 533       kListAccountsResponseFormat, merge_session_params_.email.c_str()));
 534   http_response->set_code(net::HTTP_OK);
 535 }