chrome/browser/safe_browsing/ui_manager.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/ui_manager.h"
   6
   7 #include "base/bind.h"
   8 #include "base/bind_helpers.h"
   9 #include "base/callback.h"
  10 #include "base/debug/leak_tracker.h"
  11 #include "base/stl_util.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/threading/thread.h"
  14 #include "base/threading/thread_restrictions.h"
  15 #include "chrome/browser/browser_process.h"
  16 #include "chrome/browser/safe_browsing/malware_details.h"
  17 #include "chrome/browser/safe_browsing/metadata.pb.h"
  18 #include "chrome/browser/safe_browsing/ping_manager.h"
  19 #include "chrome/browser/safe_browsing/safe_browsing_blocking_page.h"
  20 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
  21 #include "chrome/browser/tab_contents/tab_util.h"
  22 #include "chrome/common/url_constants.h"
  23 #include "components/metrics/metrics_service.h"
  24 #include "content/public/browser/browser_thread.h"
  25 #include "content/public/browser/navigation_entry.h"
  26 #include "content/public/browser/notification_service.h"
  27 #include "content/public/browser/web_contents.h"
  28 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
  29 #include "net/ssl/ssl_info.h"
  30 #include "net/url_request/url_request_context.h"
  31 #include "net/url_request/url_request_context_getter.h"
  32
  33 using content::BrowserThread;
  34 using content::NavigationEntry;
  35 using content::WebContents;
  36
  37 struct SafeBrowsingUIManager::WhiteListedEntry {
  38   int render_process_host_id;
  39   int render_view_id;
  40   std::string domain;
  41   SBThreatType threat_type;
  42 };
  43
  44 SafeBrowsingUIManager::UnsafeResource::UnsafeResource()
  45     : is_subresource(false),
  46       threat_type(SB_THREAT_TYPE_SAFE),
  47       render_process_host_id(-1),
  48       render_view_id(-1) {
  49 }
  50
  51 SafeBrowsingUIManager::UnsafeResource::~UnsafeResource() { }
  52
  53 SafeBrowsingUIManager::SafeBrowsingUIManager(
  54     const scoped_refptr<SafeBrowsingService>& service)
  55     : sb_service_(service) {
  56 }
  57
  58 SafeBrowsingUIManager::~SafeBrowsingUIManager() { }
  59
  60 void SafeBrowsingUIManager::StopOnIOThread(bool shutdown) {
  61   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  62
  63   if (shutdown)
  64     sb_service_ = NULL;
  65 }
  66
  67 void SafeBrowsingUIManager::LogPauseDelay(base::TimeDelta time) {
  68   UMA_HISTOGRAM_LONG_TIMES("SB2.Delay", time);
  69 }
  70
  71 // Only report SafeBrowsing related stats when UMA is enabled. User must also
  72 // ensure that safe browsing is enabled from the calling profile.
  73 bool SafeBrowsingUIManager::CanReportStats() const {
  74   const metrics::MetricsService* metrics = g_browser_process->metrics_service();
  75   return metrics && metrics->reporting_active();
  76 }
  77
  78 void SafeBrowsingUIManager::OnBlockingPageDone(
  79     const std::vector<UnsafeResource>& resources,
  80     bool proceed) {
  81   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  82   for (std::vector<UnsafeResource>::const_iterator iter = resources.begin();
  83        iter != resources.end(); ++iter) {
  84     const UnsafeResource& resource = *iter;
  85     if (!resource.callback.is_null())
  86       resource.callback.Run(proceed);
  87
  88     if (proceed) {
  89       BrowserThread::PostTask(
  90           BrowserThread::UI,
  91           FROM_HERE,
  92           base::Bind(&SafeBrowsingUIManager::UpdateWhitelist, this, resource));
  93     }
  94   }
  95 }
  96
  97 void SafeBrowsingUIManager::DisplayBlockingPage(
  98     const UnsafeResource& resource) {
  99   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 100   if (resource.is_subresource && !resource.is_subframe) {
 101     // Sites tagged as serving Unwanted Software should only show a warning for
 102     // main-frame or sub-frame resource. Similar warning restrictions should be
 103     // applied to malware sites tagged as "landing sites" (see "Types of
 104     // Malware sites" under
 105     // https://developers.google.com/safe-browsing/developers_guide_v3#UserWarnings).
 106     safe_browsing::MalwarePatternType proto;
 107     if (resource.threat_type == SB_THREAT_TYPE_URL_UNWANTED ||
 108         (resource.threat_type == SB_THREAT_TYPE_URL_MALWARE &&
 109          !resource.threat_metadata.empty() &&
 110          proto.ParseFromString(resource.threat_metadata) &&
 111          proto.pattern_type() == safe_browsing::MalwarePatternType::LANDING)) {
 112       if (!resource.callback.is_null()) {
 113         BrowserThread::PostTask(
 114             BrowserThread::IO, FROM_HERE, base::Bind(resource.callback, true));
 115       }
 116       return;
 117     }
 118   }
 119
 120   // Indicate to interested observers that the resource in question matched the
 121   // SB filters.
 122   if (resource.threat_type != SB_THREAT_TYPE_SAFE) {
 123     FOR_EACH_OBSERVER(Observer, observer_list_, OnSafeBrowsingMatch(resource));
 124   }
 125
 126   // Check if the user has already ignored our warning for this render_view
 127   // and domain.
 128   if (IsWhitelisted(resource)) {
 129     if (!resource.callback.is_null()) {
 130       BrowserThread::PostTask(
 131           BrowserThread::IO, FROM_HERE, base::Bind(resource.callback, true));
 132     }
 133     return;
 134   }
 135
 136   // The tab might have been closed.
 137   WebContents* web_contents =
 138       tab_util::GetWebContentsByID(resource.render_process_host_id,
 139                                    resource.render_view_id);
 140
 141   if (!web_contents) {
 142     // The tab is gone and we did not have a chance at showing the interstitial.
 143     // Just act as if "Don't Proceed" were chosen.
 144     std::vector<UnsafeResource> resources;
 145     resources.push_back(resource);
 146     BrowserThread::PostTask(
 147       BrowserThread::IO, FROM_HERE,
 148       base::Bind(&SafeBrowsingUIManager::OnBlockingPageDone,
 149                  this, resources, false));
 150     return;
 151   }
 152
 153   if (resource.threat_type != SB_THREAT_TYPE_SAFE &&
 154       CanReportStats()) {
 155     GURL page_url = web_contents->GetURL();
 156     GURL referrer_url;
 157     NavigationEntry* entry = web_contents->GetController().GetActiveEntry();
 158     if (entry)
 159       referrer_url = entry->GetReferrer().url;
 160
 161     // When the malicious url is on the main frame, and resource.original_url
 162     // is not the same as the resource.url, that means we have a redirect from
 163     // resource.original_url to resource.url.
 164     // Also, at this point, page_url points to the _previous_ page that we
 165     // were on. We replace page_url with resource.original_url and referrer
 166     // with page_url.
 167     if (!resource.is_subresource &&
 168         !resource.original_url.is_empty() &&
 169         resource.original_url != resource.url) {
 170       referrer_url = page_url;
 171       page_url = resource.original_url;
 172     }
 173     ReportSafeBrowsingHit(resource.url, page_url, referrer_url,
 174                           resource.is_subresource, resource.threat_type,
 175                           std::string() /* post_data */);
 176   }
 177
 178   if (resource.threat_type != SB_THREAT_TYPE_SAFE) {
 179     FOR_EACH_OBSERVER(Observer, observer_list_, OnSafeBrowsingHit(resource));
 180   }
 181   SafeBrowsingBlockingPage::ShowBlockingPage(this, resource);
 182 }
 183
 184 // A safebrowsing hit is sent after a blocking page for malware/phishing
 185 // or after the warning dialog for download urls, only for UMA users.
 186 void SafeBrowsingUIManager::ReportSafeBrowsingHit(
 187     const GURL& malicious_url,
 188     const GURL& page_url,
 189     const GURL& referrer_url,
 190     bool is_subresource,
 191     SBThreatType threat_type,
 192     const std::string& post_data) {
 193   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 194   if (!CanReportStats())
 195     return;
 196
 197   BrowserThread::PostTask(
 198       BrowserThread::IO, FROM_HERE,
 199       base::Bind(&SafeBrowsingUIManager::ReportSafeBrowsingHitOnIOThread, this,
 200                  malicious_url, page_url, referrer_url, is_subresource,
 201                  threat_type, post_data));
 202 }
 203
 204 void SafeBrowsingUIManager::ReportInvalidCertificateChain(
 205     const std::string& serialized_report,
 206     const base::Closure& callback) {
 207   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 208   BrowserThread::PostTaskAndReply(
 209       BrowserThread::IO, FROM_HERE,
 210       base::Bind(
 211           &SafeBrowsingUIManager::ReportInvalidCertificateChainOnIOThread, this,
 212           serialized_report),
 213       callback);
 214 }
 215
 216 void SafeBrowsingUIManager::AddObserver(Observer* observer) {
 217   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 218   observer_list_.AddObserver(observer);
 219 }
 220
 221 void SafeBrowsingUIManager::RemoveObserver(Observer* observer) {
 222   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 223   observer_list_.RemoveObserver(observer);
 224 }
 225
 226 void SafeBrowsingUIManager::ReportSafeBrowsingHitOnIOThread(
 227     const GURL& malicious_url,
 228     const GURL& page_url,
 229     const GURL& referrer_url,
 230     bool is_subresource,
 231     SBThreatType threat_type,
 232     const std::string& post_data) {
 233   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 234
 235   // The service may delete the ping manager (i.e. when user disabling service,
 236   // etc). This happens on the IO thread.
 237   if (sb_service_.get() == NULL || sb_service_->ping_manager() == NULL)
 238     return;
 239
 240   DVLOG(1) << "ReportSafeBrowsingHit: " << malicious_url << " " << page_url
 241            << " " << referrer_url << " " << is_subresource << " "
 242            << threat_type;
 243   sb_service_->ping_manager()->ReportSafeBrowsingHit(
 244       malicious_url, page_url,
 245       referrer_url, is_subresource,
 246       threat_type, post_data);
 247 }
 248
 249 void SafeBrowsingUIManager::ReportInvalidCertificateChainOnIOThread(
 250     const std::string& serialized_report) {
 251   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 252
 253   // The service may delete the ping manager (i.e. when user disabling service,
 254   // etc). This happens on the IO thread.
 255   if (!sb_service_ || !sb_service_->ping_manager())
 256     return;
 257
 258   sb_service_->ping_manager()->ReportInvalidCertificateChain(serialized_report);
 259 }
 260
 261 // If the user had opted-in to send MalwareDetails, this gets called
 262 // when the report is ready.
 263 void SafeBrowsingUIManager::SendSerializedMalwareDetails(
 264     const std::string& serialized) {
 265   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 266
 267   // The service may delete the ping manager (i.e. when user disabling service,
 268   // etc). This happens on the IO thread.
 269   if (sb_service_.get() == NULL || sb_service_->ping_manager() == NULL)
 270     return;
 271
 272   if (!serialized.empty()) {
 273     DVLOG(1) << "Sending serialized malware details.";
 274     sb_service_->ping_manager()->ReportMalwareDetails(serialized);
 275   }
 276 }
 277
 278 void SafeBrowsingUIManager::UpdateWhitelist(const UnsafeResource& resource) {
 279   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 280   // Whitelist this domain and warning type for the given tab.
 281   WhiteListedEntry entry;
 282   entry.render_process_host_id = resource.render_process_host_id;
 283   entry.render_view_id = resource.render_view_id;
 284   entry.domain = net::registry_controlled_domains::GetDomainAndRegistry(
 285       resource.url,
 286       net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
 287   entry.threat_type = resource.threat_type;
 288   white_listed_entries_.push_back(entry);
 289 }
 290
 291 bool SafeBrowsingUIManager::IsWhitelisted(const UnsafeResource& resource) {
 292   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 293   // Check if the user has already ignored our warning for this render_view
 294   // and domain.
 295   for (size_t i = 0; i < white_listed_entries_.size(); ++i) {
 296     const WhiteListedEntry& entry = white_listed_entries_[i];
 297     if (entry.render_process_host_id == resource.render_process_host_id &&
 298         entry.render_view_id == resource.render_view_id) {
 299       return entry.domain ==
 300           net::registry_controlled_domains::GetDomainAndRegistry(
 301               resource.url,
 302               net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
 303     }
 304   }
 305   return false;
 306 }