src/chrome/browser/safe_browsing/browser_feature_extractor_unittest.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/browser/safe_browsing/browser_feature_extractor.h"
   6
   7 #include <map>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/message_loop/message_loop.h"
  13 #include "base/strings/stringprintf.h"
  14 #include "base/time/time.h"
  15 #include "chrome/browser/history/history_backend.h"
  16 #include "chrome/browser/history/history_service.h"
  17 #include "chrome/browser/history/history_service_factory.h"
  18 #include "chrome/browser/profiles/profile.h"
  19 #include "chrome/browser/safe_browsing/browser_features.h"
  20 #include "chrome/browser/safe_browsing/client_side_detection_host.h"
  21 #include "chrome/browser/safe_browsing/database_manager.h"
  22 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
  23 #include "chrome/browser/safe_browsing/ui_manager.h"
  24 #include "chrome/common/safe_browsing/csd.pb.h"
  25 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
  26 #include "chrome/test/base/testing_profile.h"
  27 #include "content/public/browser/navigation_controller.h"
  28 #include "content/public/browser/web_contents.h"
  29 #include "content/public/common/page_transition_types.h"
  30 #include "content/public/common/referrer.h"
  31 #include "content/public/test/test_browser_thread.h"
  32 #include "content/public/test/web_contents_tester.h"
  33 #include "testing/gmock/include/gmock/gmock.h"
  34 #include "testing/gtest/include/gtest/gtest.h"
  35 #include "url/gurl.h"
  36
  37 using content::BrowserThread;
  38 using content::ResourceType;
  39 using content::WebContentsTester;
  40
  41 using testing::DoAll;
  42 using testing::Return;
  43 using testing::StrictMock;
  44
  45 namespace safe_browsing {
  46
  47 namespace {
  48
  49 class MockSafeBrowsingDatabaseManager : public SafeBrowsingDatabaseManager {
  50  public:
  51   explicit MockSafeBrowsingDatabaseManager(
  52       const scoped_refptr<SafeBrowsingService>& service)
  53       : SafeBrowsingDatabaseManager(service) { }
  54
  55   MOCK_METHOD1(MatchMalwareIP, bool(const std::string& ip_address));
  56
  57  protected:
  58   virtual ~MockSafeBrowsingDatabaseManager() {}
  59
  60  private:
  61   DISALLOW_COPY_AND_ASSIGN(MockSafeBrowsingDatabaseManager);
  62 };
  63
  64 class MockClientSideDetectionHost : public ClientSideDetectionHost {
  65  public:
  66   MockClientSideDetectionHost(
  67       content::WebContents* tab,
  68       SafeBrowsingDatabaseManager* database_manager)
  69       : ClientSideDetectionHost(tab) {
  70     set_safe_browsing_managers(NULL, database_manager);
  71   }
  72
  73   virtual ~MockClientSideDetectionHost() {}
  74
  75   MOCK_METHOD1(IsBadIpAddress, bool(const std::string&));
  76 };
  77 }  // namespace
  78
  79 class BrowserFeatureExtractorTest : public ChromeRenderViewHostTestHarness {
  80  protected:
  81   virtual void SetUp() {
  82     ChromeRenderViewHostTestHarness::SetUp();
  83     ASSERT_TRUE(profile()->CreateHistoryService(
  84         true /* delete_file */, false /* no_db */));
  85
  86     db_manager_ = new StrictMock<MockSafeBrowsingDatabaseManager>(
  87         SafeBrowsingService::CreateSafeBrowsingService());
  88     host_.reset(new StrictMock<MockClientSideDetectionHost>(
  89         web_contents(), db_manager_.get()));
  90     extractor_.reset(
  91         new BrowserFeatureExtractor(web_contents(), host_.get()));
  92     num_pending_ = 0;
  93     browse_info_.reset(new BrowseInfo);
  94   }
  95
  96   virtual void TearDown() {
  97     extractor_.reset();
  98     host_.reset();
  99     db_manager_ = NULL;
 100     profile()->DestroyHistoryService();
 101     ChromeRenderViewHostTestHarness::TearDown();
 102     ASSERT_EQ(0, num_pending_);
 103   }
 104
 105   HistoryService* history_service() {
 106     return HistoryServiceFactory::GetForProfile(profile(),
 107                                                 Profile::EXPLICIT_ACCESS);
 108   }
 109
 110   void SetRedirectChain(const std::vector<GURL>& redirect_chain,
 111                         bool new_host) {
 112     browse_info_->url_redirects = redirect_chain;
 113     if (new_host) {
 114       browse_info_->host_redirects = redirect_chain;
 115     }
 116   }
 117
 118   // Wrapper around NavigateAndCommit that also sets the redirect chain to
 119   // a sane value.
 120   void SimpleNavigateAndCommit(const GURL& url) {
 121     std::vector<GURL> redirect_chain;
 122     redirect_chain.push_back(url);
 123     SetRedirectChain(redirect_chain, true);
 124     NavigateAndCommit(url, GURL(), content::PAGE_TRANSITION_LINK);
 125   }
 126
 127   // This is similar to NavigateAndCommit that is in WebContentsTester, but
 128   // allows us to specify the referrer and page_transition_type.
 129   void NavigateAndCommit(const GURL& url,
 130                          const GURL& referrer,
 131                          content::PageTransition type) {
 132     web_contents()->GetController().LoadURL(
 133         url, content::Referrer(referrer, blink::WebReferrerPolicyDefault),
 134         type, std::string());
 135
 136     static int page_id = 0;
 137     content::RenderFrameHost* rfh =
 138         WebContentsTester::For(web_contents())->GetPendingMainFrame();
 139     if (!rfh) {
 140       rfh = web_contents()->GetMainFrame();
 141     }
 142     WebContentsTester::For(web_contents())->ProceedWithCrossSiteNavigation();
 143     WebContentsTester::For(web_contents())->TestDidNavigateWithReferrer(
 144         rfh, ++page_id, url,
 145         content::Referrer(referrer, blink::WebReferrerPolicyDefault), type);
 146   }
 147
 148   bool ExtractFeatures(ClientPhishingRequest* request) {
 149     StartExtractFeatures(request);
 150     base::MessageLoop::current()->Run();
 151     EXPECT_EQ(1U, success_.count(request));
 152     return success_.count(request) ? success_[request] : false;
 153   }
 154
 155   void StartExtractFeatures(ClientPhishingRequest* request) {
 156     success_.erase(request);
 157     ++num_pending_;
 158     extractor_->ExtractFeatures(
 159         browse_info_.get(),
 160         request,
 161         base::Bind(&BrowserFeatureExtractorTest::ExtractFeaturesDone,
 162                    base::Unretained(this)));
 163   }
 164
 165   void GetFeatureMap(const ClientPhishingRequest& request,
 166                      std::map<std::string, double>* features) {
 167     for (int i = 0; i < request.non_model_feature_map_size(); ++i) {
 168       const ClientPhishingRequest::Feature& feature =
 169           request.non_model_feature_map(i);
 170       EXPECT_EQ(0U, features->count(feature.name()));
 171       (*features)[feature.name()] = feature.value();
 172     }
 173   }
 174
 175   void ExtractMalwareFeatures(ClientMalwareRequest* request) {
 176     // Feature extraction takes ownership of the request object
 177     // and passes it along to the done callback in the end.
 178     StartExtractMalwareFeatures(request);
 179     base::MessageLoopForUI::current()->Run();
 180     EXPECT_EQ(1U, success_.count(request));
 181     EXPECT_TRUE(success_[request]);
 182   }
 183
 184   void StartExtractMalwareFeatures(ClientMalwareRequest* request) {
 185     success_.erase(request);
 186     ++num_pending_;
 187     // We temporarily give up ownership of request to ExtractMalwareFeatures
 188     // but we'll regain ownership of it in ExtractMalwareFeaturesDone.
 189     extractor_->ExtractMalwareFeatures(
 190         browse_info_.get(),
 191         request,
 192         base::Bind(&BrowserFeatureExtractorTest::ExtractMalwareFeaturesDone,
 193                    base::Unretained(this)));
 194   }
 195
 196   void GetMalwareUrls(
 197       const ClientMalwareRequest& request,
 198       std::map<std::string, std::set<std::string> >* urls) {
 199     for (int i = 0; i < request.bad_ip_url_info_size(); ++i) {
 200       const ClientMalwareRequest::UrlInfo& urlinfo =
 201           request.bad_ip_url_info(i);
 202       (*urls)[urlinfo.ip()].insert(urlinfo.url());
 203     }
 204   }
 205
 206   int num_pending_;  // Number of pending feature extractions.
 207   scoped_ptr<BrowserFeatureExtractor> extractor_;
 208   std::map<void*, bool> success_;
 209   scoped_ptr<BrowseInfo> browse_info_;
 210   scoped_ptr<StrictMock<MockClientSideDetectionHost> > host_;
 211   scoped_refptr<StrictMock<MockSafeBrowsingDatabaseManager> > db_manager_;
 212
 213  private:
 214   void ExtractFeaturesDone(bool success,
 215                            scoped_ptr<ClientPhishingRequest> request) {
 216     EXPECT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::UI));
 217     ASSERT_EQ(0U, success_.count(request.get()));
 218     // The pointer doesn't really belong to us.  It belongs to
 219     // the test case which passed it to ExtractFeatures above.
 220     success_[request.release()] = success;
 221     if (--num_pending_ == 0) {
 222       base::MessageLoop::current()->Quit();
 223     }
 224   }
 225
 226   void ExtractMalwareFeaturesDone(
 227       bool success,
 228       scoped_ptr<ClientMalwareRequest> request) {
 229     EXPECT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::UI));
 230     ASSERT_EQ(0U, success_.count(request.get()));
 231     // The pointer doesn't really belong to us.  It belongs to
 232     // the test case which passed it to ExtractMalwareFeatures above.
 233     success_[request.release()] = success;
 234     if (--num_pending_ == 0) {
 235       base::MessageLoopForUI::current()->Quit();
 236     }
 237   }
 238 };
 239
 240 TEST_F(BrowserFeatureExtractorTest, UrlNotInHistory) {
 241   ClientPhishingRequest request;
 242   SimpleNavigateAndCommit(GURL("http://www.google.com"));
 243   request.set_url("http://www.google.com/");
 244   request.set_client_score(0.5);
 245   EXPECT_FALSE(ExtractFeatures(&request));
 246 }
 247
 248 TEST_F(BrowserFeatureExtractorTest, RequestNotInitialized) {
 249   ClientPhishingRequest request;
 250   request.set_url("http://www.google.com/");
 251   // Request is missing the score value.
 252   SimpleNavigateAndCommit(GURL("http://www.google.com"));
 253   EXPECT_FALSE(ExtractFeatures(&request));
 254 }
 255
 256 TEST_F(BrowserFeatureExtractorTest, UrlInHistory) {
 257   history_service()->AddPage(GURL("http://www.foo.com/bar.html"),
 258                              base::Time::Now(),
 259                              history::SOURCE_BROWSED);
 260   history_service()->AddPage(GURL("https://www.foo.com/gaa.html"),
 261                              base::Time::Now(),
 262                              history::SOURCE_BROWSED);  // same host HTTPS.
 263   history_service()->AddPage(GURL("http://www.foo.com/gaa.html"),
 264                              base::Time::Now(),
 265                              history::SOURCE_BROWSED);  // same host HTTP.
 266   history_service()->AddPage(GURL("http://bar.foo.com/gaa.html"),
 267                              base::Time::Now(),
 268                              history::SOURCE_BROWSED);  // different host.
 269   history_service()->AddPage(GURL("http://www.foo.com/bar.html?a=b"),
 270                              base::Time::Now() - base::TimeDelta::FromHours(23),
 271                              NULL, 0, GURL(), history::RedirectList(),
 272                              content::PAGE_TRANSITION_LINK,
 273                              history::SOURCE_BROWSED, false);
 274   history_service()->AddPage(GURL("http://www.foo.com/bar.html"),
 275                              base::Time::Now() - base::TimeDelta::FromHours(25),
 276                              NULL, 0, GURL(), history::RedirectList(),
 277                              content::PAGE_TRANSITION_TYPED,
 278                              history::SOURCE_BROWSED, false);
 279   history_service()->AddPage(GURL("https://www.foo.com/goo.html"),
 280                              base::Time::Now() - base::TimeDelta::FromDays(5),
 281                              NULL, 0, GURL(), history::RedirectList(),
 282                              content::PAGE_TRANSITION_TYPED,
 283                              history::SOURCE_BROWSED, false);
 284
 285   SimpleNavigateAndCommit(GURL("http://www.foo.com/bar.html"));
 286
 287   ClientPhishingRequest request;
 288   request.set_url("http://www.foo.com/bar.html");
 289   request.set_client_score(0.5);
 290   EXPECT_TRUE(ExtractFeatures(&request));
 291   std::map<std::string, double> features;
 292   GetFeatureMap(request, &features);
 293
 294   EXPECT_EQ(12U, features.size());
 295   EXPECT_DOUBLE_EQ(2.0, features[features::kUrlHistoryVisitCount]);
 296   EXPECT_DOUBLE_EQ(1.0,
 297                    features[features::kUrlHistoryVisitCountMoreThan24hAgo]);
 298   EXPECT_DOUBLE_EQ(1.0, features[features::kUrlHistoryTypedCount]);
 299   EXPECT_DOUBLE_EQ(1.0, features[features::kUrlHistoryLinkCount]);
 300   EXPECT_DOUBLE_EQ(4.0, features[features::kHttpHostVisitCount]);
 301   EXPECT_DOUBLE_EQ(2.0, features[features::kHttpsHostVisitCount]);
 302   EXPECT_DOUBLE_EQ(1.0, features[features::kFirstHttpHostVisitMoreThan24hAgo]);
 303   EXPECT_DOUBLE_EQ(1.0, features[features::kFirstHttpsHostVisitMoreThan24hAgo]);
 304
 305   request.Clear();
 306   request.set_url("http://bar.foo.com/gaa.html");
 307   request.set_client_score(0.5);
 308   EXPECT_TRUE(ExtractFeatures(&request));
 309   features.clear();
 310   GetFeatureMap(request, &features);
 311   // We have less features because we didn't Navigate to this page, so we don't
 312   // have Referrer, IsFirstNavigation, HasSSLReferrer, etc.
 313   EXPECT_EQ(7U, features.size());
 314   EXPECT_DOUBLE_EQ(1.0, features[features::kUrlHistoryVisitCount]);
 315   EXPECT_DOUBLE_EQ(0.0,
 316                    features[features::kUrlHistoryVisitCountMoreThan24hAgo]);
 317   EXPECT_DOUBLE_EQ(0.0, features[features::kUrlHistoryTypedCount]);
 318   EXPECT_DOUBLE_EQ(1.0, features[features::kUrlHistoryLinkCount]);
 319   EXPECT_DOUBLE_EQ(1.0, features[features::kHttpHostVisitCount]);
 320   EXPECT_DOUBLE_EQ(0.0, features[features::kHttpsHostVisitCount]);
 321   EXPECT_DOUBLE_EQ(0.0, features[features::kFirstHttpHostVisitMoreThan24hAgo]);
 322   EXPECT_FALSE(features.count(features::kFirstHttpsHostVisitMoreThan24hAgo));
 323 }
 324
 325 TEST_F(BrowserFeatureExtractorTest, MultipleRequestsAtOnce) {
 326   history_service()->AddPage(GURL("http://www.foo.com/bar.html"),
 327                              base::Time::Now(),
 328                              history::SOURCE_BROWSED);
 329   SimpleNavigateAndCommit(GURL("http:/www.foo.com/bar.html"));
 330   ClientPhishingRequest request;
 331   request.set_url("http://www.foo.com/bar.html");
 332   request.set_client_score(0.5);
 333   StartExtractFeatures(&request);
 334
 335   SimpleNavigateAndCommit(GURL("http://www.foo.com/goo.html"));
 336   ClientPhishingRequest request2;
 337   request2.set_url("http://www.foo.com/goo.html");
 338   request2.set_client_score(1.0);
 339   StartExtractFeatures(&request2);
 340
 341   base::MessageLoop::current()->Run();
 342   EXPECT_TRUE(success_[&request]);
 343   // Success is false because the second URL is not in the history and we are
 344   // not able to distinguish between a missing URL in the history and an error.
 345   EXPECT_FALSE(success_[&request2]);
 346 }
 347
 348 TEST_F(BrowserFeatureExtractorTest, BrowseFeatures) {
 349   history_service()->AddPage(GURL("http://www.foo.com/"),
 350                              base::Time::Now(),
 351                              history::SOURCE_BROWSED);
 352   history_service()->AddPage(GURL("http://www.foo.com/page.html"),
 353                              base::Time::Now(),
 354                              history::SOURCE_BROWSED);
 355   history_service()->AddPage(GURL("http://www.bar.com/"),
 356                              base::Time::Now(),
 357                              history::SOURCE_BROWSED);
 358   history_service()->AddPage(GURL("http://www.bar.com/other_page.html"),
 359                              base::Time::Now(),
 360                              history::SOURCE_BROWSED);
 361   history_service()->AddPage(GURL("http://www.baz.com/"),
 362                              base::Time::Now(),
 363                              history::SOURCE_BROWSED);
 364
 365   ClientPhishingRequest request;
 366   request.set_url("http://www.foo.com/");
 367   request.set_client_score(0.5);
 368   std::vector<GURL> redirect_chain;
 369   redirect_chain.push_back(GURL("http://somerandomwebsite.com/"));
 370   redirect_chain.push_back(GURL("http://www.foo.com/"));
 371   SetRedirectChain(redirect_chain, true);
 372   browse_info_->http_status_code = 200;
 373   NavigateAndCommit(GURL("http://www.foo.com/"),
 374                     GURL("http://google.com/"),
 375                     content::PageTransitionFromInt(
 376                         content::PAGE_TRANSITION_AUTO_BOOKMARK |
 377                         content::PAGE_TRANSITION_FORWARD_BACK));
 378
 379   EXPECT_TRUE(ExtractFeatures(&request));
 380   std::map<std::string, double> features;
 381   GetFeatureMap(request, &features);
 382
 383   EXPECT_EQ(1.0,
 384             features[base::StringPrintf("%s=%s",
 385                                         features::kReferrer,
 386                                         "http://google.com/")]);
 387   EXPECT_EQ(1.0,
 388             features[base::StringPrintf("%s[0]=%s",
 389                                         features::kRedirect,
 390                                         "http://somerandomwebsite.com/")]);
 391   // We shouldn't have a feature for the last redirect in the chain, since it
 392   // should always be the URL that we navigated to.
 393   EXPECT_EQ(0.0,
 394             features[base::StringPrintf("%s[1]=%s",
 395                                         features::kRedirect,
 396                                         "http://foo.com/")]);
 397   EXPECT_EQ(0.0, features[features::kHasSSLReferrer]);
 398   EXPECT_EQ(2.0, features[features::kPageTransitionType]);
 399   EXPECT_EQ(1.0, features[features::kIsFirstNavigation]);
 400   EXPECT_EQ(200.0, features[features::kHttpStatusCode]);
 401
 402   request.Clear();
 403   request.set_url("http://www.foo.com/page.html");
 404   request.set_client_score(0.5);
 405   redirect_chain.clear();
 406   redirect_chain.push_back(GURL("http://www.foo.com/redirect"));
 407   redirect_chain.push_back(GURL("http://www.foo.com/second_redirect"));
 408   redirect_chain.push_back(GURL("http://www.foo.com/page.html"));
 409   SetRedirectChain(redirect_chain, false);
 410   browse_info_->http_status_code = 404;
 411   NavigateAndCommit(GURL("http://www.foo.com/page.html"),
 412                     GURL("http://www.foo.com"),
 413                     content::PageTransitionFromInt(
 414                         content::PAGE_TRANSITION_TYPED |
 415                         content::PAGE_TRANSITION_CHAIN_START |
 416                         content::PAGE_TRANSITION_CLIENT_REDIRECT));
 417
 418   EXPECT_TRUE(ExtractFeatures(&request));
 419   features.clear();
 420   GetFeatureMap(request, &features);
 421
 422   EXPECT_EQ(1,
 423             features[base::StringPrintf("%s=%s",
 424                                         features::kReferrer,
 425                                         "http://www.foo.com/")]);
 426   EXPECT_EQ(1.0,
 427             features[base::StringPrintf("%s[0]=%s",
 428                                         features::kRedirect,
 429                                         "http://www.foo.com/redirect")]);
 430   EXPECT_EQ(1.0,
 431             features[base::StringPrintf("%s[1]=%s",
 432                                         features::kRedirect,
 433                                         "http://www.foo.com/second_redirect")]);
 434   EXPECT_EQ(0.0, features[features::kHasSSLReferrer]);
 435   EXPECT_EQ(1.0, features[features::kPageTransitionType]);
 436   EXPECT_EQ(0.0, features[features::kIsFirstNavigation]);
 437   EXPECT_EQ(1.0,
 438             features[base::StringPrintf("%s%s=%s",
 439                                         features::kHostPrefix,
 440                                         features::kReferrer,
 441                                         "http://google.com/")]);
 442   EXPECT_EQ(1.0,
 443             features[base::StringPrintf("%s%s[0]=%s",
 444                                         features::kHostPrefix,
 445                                         features::kRedirect,
 446                                         "http://somerandomwebsite.com/")]);
 447   EXPECT_EQ(2.0,
 448             features[base::StringPrintf("%s%s",
 449                                         features::kHostPrefix,
 450                                         features::kPageTransitionType)]);
 451   EXPECT_EQ(1.0,
 452             features[base::StringPrintf("%s%s",
 453                                         features::kHostPrefix,
 454                                         features::kIsFirstNavigation)]);
 455   EXPECT_EQ(404.0, features[features::kHttpStatusCode]);
 456
 457   request.Clear();
 458   request.set_url("http://www.bar.com/");
 459   request.set_client_score(0.5);
 460   redirect_chain.clear();
 461   redirect_chain.push_back(GURL("http://www.foo.com/page.html"));
 462   redirect_chain.push_back(GURL("http://www.bar.com/"));
 463   SetRedirectChain(redirect_chain, true);
 464   NavigateAndCommit(GURL("http://www.bar.com/"),
 465                     GURL("http://www.foo.com/page.html"),
 466                     content::PageTransitionFromInt(
 467                         content::PAGE_TRANSITION_LINK |
 468                         content::PAGE_TRANSITION_CHAIN_END |
 469                         content::PAGE_TRANSITION_CLIENT_REDIRECT));
 470
 471   EXPECT_TRUE(ExtractFeatures(&request));
 472   features.clear();
 473   GetFeatureMap(request, &features);
 474
 475   EXPECT_EQ(1.0,
 476             features[base::StringPrintf("%s=%s",
 477                                         features::kReferrer,
 478                                         "http://www.foo.com/page.html")]);
 479   EXPECT_EQ(1.0,
 480             features[base::StringPrintf("%s[0]=%s",
 481                                         features::kRedirect,
 482                                         "http://www.foo.com/page.html")]);
 483   EXPECT_EQ(0.0, features[features::kHasSSLReferrer]);
 484   EXPECT_EQ(0.0, features[features::kPageTransitionType]);
 485   EXPECT_EQ(0.0, features[features::kIsFirstNavigation]);
 486
 487   // Should not have host features.
 488   EXPECT_EQ(0U,
 489             features.count(base::StringPrintf("%s%s",
 490                                               features::kHostPrefix,
 491                                               features::kPageTransitionType)));
 492   EXPECT_EQ(0U,
 493             features.count(base::StringPrintf("%s%s",
 494                                               features::kHostPrefix,
 495                                               features::kIsFirstNavigation)));
 496
 497   request.Clear();
 498   request.set_url("http://www.bar.com/other_page.html");
 499   request.set_client_score(0.5);
 500   redirect_chain.clear();
 501   redirect_chain.push_back(GURL("http://www.bar.com/other_page.html"));
 502   SetRedirectChain(redirect_chain, false);
 503   NavigateAndCommit(GURL("http://www.bar.com/other_page.html"),
 504                     GURL("http://www.bar.com/"),
 505                     content::PAGE_TRANSITION_LINK);
 506
 507   EXPECT_TRUE(ExtractFeatures(&request));
 508   features.clear();
 509   GetFeatureMap(request, &features);
 510
 511   EXPECT_EQ(1.0,
 512             features[base::StringPrintf("%s=%s",
 513                                         features::kReferrer,
 514                                         "http://www.bar.com/")]);
 515   EXPECT_EQ(0.0, features[features::kHasSSLReferrer]);
 516   EXPECT_EQ(0.0, features[features::kPageTransitionType]);
 517   EXPECT_EQ(0.0, features[features::kIsFirstNavigation]);
 518   EXPECT_EQ(1.0,
 519             features[base::StringPrintf("%s%s=%s",
 520                                         features::kHostPrefix,
 521                                         features::kReferrer,
 522                                         "http://www.foo.com/page.html")]);
 523   EXPECT_EQ(1.0,
 524             features[base::StringPrintf("%s%s[0]=%s",
 525                                         features::kHostPrefix,
 526                                         features::kRedirect,
 527                                         "http://www.foo.com/page.html")]);
 528   EXPECT_EQ(0.0,
 529             features[base::StringPrintf("%s%s",
 530                                         features::kHostPrefix,
 531                                         features::kPageTransitionType)]);
 532   EXPECT_EQ(0.0,
 533             features[base::StringPrintf("%s%s",
 534                                         features::kHostPrefix,
 535                                         features::kIsFirstNavigation)]);
 536   request.Clear();
 537   request.set_url("http://www.baz.com/");
 538   request.set_client_score(0.5);
 539   redirect_chain.clear();
 540   redirect_chain.push_back(GURL("https://bankofamerica.com"));
 541   redirect_chain.push_back(GURL("http://www.baz.com/"));
 542   SetRedirectChain(redirect_chain, true);
 543   NavigateAndCommit(GURL("http://www.baz.com"),
 544                     GURL("https://bankofamerica.com"),
 545                     content::PAGE_TRANSITION_GENERATED);
 546
 547   EXPECT_TRUE(ExtractFeatures(&request));
 548   features.clear();
 549   GetFeatureMap(request, &features);
 550
 551   EXPECT_EQ(1.0,
 552             features[base::StringPrintf("%s[0]=%s",
 553                                         features::kRedirect,
 554                                         features::kSecureRedirectValue)]);
 555   EXPECT_EQ(1.0, features[features::kHasSSLReferrer]);
 556   EXPECT_EQ(5.0, features[features::kPageTransitionType]);
 557   // Should not have redirect or host features.
 558   EXPECT_EQ(0U,
 559             features.count(base::StringPrintf("%s%s",
 560                                               features::kHostPrefix,
 561                                               features::kPageTransitionType)));
 562   EXPECT_EQ(0U,
 563             features.count(base::StringPrintf("%s%s",
 564                                               features::kHostPrefix,
 565                                               features::kIsFirstNavigation)));
 566   EXPECT_EQ(5.0, features[features::kPageTransitionType]);
 567 }
 568
 569 TEST_F(BrowserFeatureExtractorTest, SafeBrowsingFeatures) {
 570   SimpleNavigateAndCommit(GURL("http://www.foo.com/malware.html"));
 571   ClientPhishingRequest request;
 572   request.set_url("http://www.foo.com/malware.html");
 573   request.set_client_score(0.5);
 574
 575   browse_info_->unsafe_resource.reset(
 576       new SafeBrowsingUIManager::UnsafeResource);
 577   browse_info_->unsafe_resource->url = GURL("http://www.malware.com/");
 578   browse_info_->unsafe_resource->original_url = GURL("http://www.good.com/");
 579   browse_info_->unsafe_resource->is_subresource = true;
 580   browse_info_->unsafe_resource->threat_type = SB_THREAT_TYPE_URL_MALWARE;
 581
 582   ExtractFeatures(&request);
 583   std::map<std::string, double> features;
 584   GetFeatureMap(request, &features);
 585   EXPECT_TRUE(features.count(base::StringPrintf(
 586       "%s%s",
 587       features::kSafeBrowsingMaliciousUrl,
 588       "http://www.malware.com/")));
 589   EXPECT_TRUE(features.count(base::StringPrintf(
 590       "%s%s",
 591        features::kSafeBrowsingOriginalUrl,
 592         "http://www.good.com/")));
 593   EXPECT_DOUBLE_EQ(1.0, features[features::kSafeBrowsingIsSubresource]);
 594   EXPECT_DOUBLE_EQ(2.0, features[features::kSafeBrowsingThreatType]);
 595 }
 596
 597 TEST_F(BrowserFeatureExtractorTest, MalwareFeatures) {
 598   ClientMalwareRequest request;
 599   request.set_url("http://www.foo.com/");
 600
 601   std::vector<IPUrlInfo> bad_urls;
 602   bad_urls.push_back(
 603       IPUrlInfo("http://bad.com", "GET", "", content::RESOURCE_TYPE_SCRIPT));
 604   bad_urls.push_back(
 605       IPUrlInfo("http://evil.com", "GET", "", content::RESOURCE_TYPE_SCRIPT));
 606   browse_info_->ips.insert(std::make_pair("193.5.163.8", bad_urls));
 607   browse_info_->ips.insert(std::make_pair("92.92.92.92", bad_urls));
 608   std::vector<IPUrlInfo> good_urls;
 609   good_urls.push_back(
 610       IPUrlInfo("http://ok.com", "GET", "", content::RESOURCE_TYPE_SCRIPT));
 611   browse_info_->ips.insert(std::make_pair("23.94.78.1", good_urls));
 612   EXPECT_CALL(*db_manager_, MatchMalwareIP("193.5.163.8"))
 613       .WillOnce(Return(true));
 614   EXPECT_CALL(*db_manager_, MatchMalwareIP("92.92.92.92"))
 615       .WillOnce(Return(true));
 616   EXPECT_CALL(*db_manager_, MatchMalwareIP("23.94.78.1"))
 617       .WillOnce(Return(false));
 618
 619   ExtractMalwareFeatures(&request);
 620   EXPECT_EQ(4, request.bad_ip_url_info_size());
 621   std::map<std::string, std::set<std::string> > result_urls;
 622   GetMalwareUrls(request, &result_urls);
 623
 624   EXPECT_EQ(2U, result_urls.size());
 625   EXPECT_TRUE(result_urls.count("193.5.163.8"));
 626   std::set<std::string> urls = result_urls["193.5.163.8"];
 627   EXPECT_EQ(2U, urls.size());
 628   EXPECT_TRUE(urls.find("http://bad.com") != urls.end());
 629   EXPECT_TRUE(urls.find("http://evil.com") != urls.end());
 630   EXPECT_TRUE(result_urls.count("92.92.92.92"));
 631   urls = result_urls["92.92.92.92"];
 632   EXPECT_EQ(2U, urls.size());
 633   EXPECT_TRUE(urls.find("http://bad.com") != urls.end());
 634   EXPECT_TRUE(urls.find("http://evil.com") != urls.end());
 635 }
 636
 637 TEST_F(BrowserFeatureExtractorTest, MalwareFeatures_ExceedLimit) {
 638   ClientMalwareRequest request;
 639   request.set_url("http://www.foo.com/");
 640
 641   std::vector<IPUrlInfo> bad_urls;
 642   bad_urls.push_back(
 643       IPUrlInfo("http://bad.com", "GET", "", content::RESOURCE_TYPE_SCRIPT));
 644   std::vector<std::string> ips;
 645   for (int i = 0; i < 7; ++i) {  // Add 7 ips
 646     std::string ip = base::StringPrintf("%d.%d.%d.%d", i, i, i, i);
 647     ips.push_back(ip);
 648     browse_info_->ips.insert(std::make_pair(ip, bad_urls));
 649
 650     // First ip is good but all the others are bad.
 651     EXPECT_CALL(*db_manager_, MatchMalwareIP(ip)).WillOnce(Return(i > 0));
 652   }
 653
 654   ExtractMalwareFeatures(&request);
 655   // The number of IP matched url we store is capped at 5 IPs per request.
 656   EXPECT_EQ(5, request.bad_ip_url_info_size());
 657 }
 658
 659 }  // namespace safe_browsing