android_webview/browser/net/aw_url_request_context_getter.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 "android_webview/browser/net/aw_url_request_context_getter.h"
   6
   7 #include <vector>
   8
   9 #include "android_webview/browser/aw_browser_context.h"
  10 #include "android_webview/browser/aw_content_browser_client.h"
  11 #include "android_webview/browser/aw_request_interceptor.h"
  12 #include "android_webview/browser/net/aw_network_delegate.h"
  13 #include "android_webview/browser/net/aw_url_request_job_factory.h"
  14 #include "android_webview/browser/net/init_native_callback.h"
  15 #include "android_webview/common/aw_content_client.h"
  16 #include "base/command_line.h"
  17 #include "base/strings/string_number_conversions.h"
  18 #include "base/threading/sequenced_worker_pool.h"
  19 #include "base/threading/worker_pool.h"
  20 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_auth_request_handler.h"
  21 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config_service.h"
  22 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_interceptor.h"
  23 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.h"
  24 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h"
  25 #include "content/public/browser/browser_thread.h"
  26 #include "content/public/browser/content_browser_client.h"
  27 #include "content/public/browser/cookie_store_factory.h"
  28 #include "content/public/common/content_client.h"
  29 #include "content/public/common/content_switches.h"
  30 #include "content/public/common/url_constants.h"
  31 #include "net/base/cache_type.h"
  32 #include "net/base/net_log.h"
  33 #include "net/cookies/cookie_store.h"
  34 #include "net/dns/mapped_host_resolver.h"
  35 #include "net/http/http_cache.h"
  36 #include "net/http/http_stream_factory.h"
  37 #include "net/proxy/proxy_service.h"
  38 #include "net/socket/next_proto.h"
  39 #include "net/ssl/default_channel_id_store.h"
  40 #include "net/url_request/data_protocol_handler.h"
  41 #include "net/url_request/file_protocol_handler.h"
  42 #include "net/url_request/url_request_context_builder.h"
  43 #include "net/url_request/url_request_context.h"
  44 #include "net/url_request/url_request_intercepting_job_factory.h"
  45 #include "net/url_request/url_request_interceptor.h"
  46
  47 using content::BrowserThread;
  48 using data_reduction_proxy::DataReductionProxySettings;
  49
  50 namespace android_webview {
  51
  52
  53 namespace {
  54
  55 void ApplyCmdlineOverridesToURLRequestContextBuilder(
  56     net::URLRequestContextBuilder* builder) {
  57   const base::CommandLine& command_line =
  58       *base::CommandLine::ForCurrentProcess();
  59   if (command_line.HasSwitch(switches::kHostResolverRules)) {
  60     // If hostname remappings were specified on the command-line, layer these
  61     // rules on top of the real host resolver. This allows forwarding all
  62     // requests through a designated test server.
  63     scoped_ptr<net::MappedHostResolver> host_resolver(
  64         new net::MappedHostResolver(
  65             net::HostResolver::CreateDefaultResolver(NULL)));
  66     host_resolver->SetRulesFromString(
  67         command_line.GetSwitchValueASCII(switches::kHostResolverRules));
  68     builder->set_host_resolver(host_resolver.release());
  69   }
  70 }
  71
  72 void ApplyCmdlineOverridesToNetworkSessionParams(
  73     net::HttpNetworkSession::Params* params) {
  74   int value;
  75   const base::CommandLine& command_line =
  76       *base::CommandLine::ForCurrentProcess();
  77   if (command_line.HasSwitch(switches::kTestingFixedHttpPort)) {
  78     base::StringToInt(command_line.GetSwitchValueASCII(
  79         switches::kTestingFixedHttpPort), &value);
  80     params->testing_fixed_http_port = value;
  81   }
  82   if (command_line.HasSwitch(switches::kTestingFixedHttpsPort)) {
  83     base::StringToInt(command_line.GetSwitchValueASCII(
  84         switches::kTestingFixedHttpsPort), &value);
  85     params->testing_fixed_https_port = value;
  86   }
  87   if (command_line.HasSwitch(switches::kIgnoreCertificateErrors)) {
  88     params->ignore_certificate_errors = true;
  89   }
  90 }
  91
  92 void PopulateNetworkSessionParams(
  93     net::URLRequestContext* context,
  94     net::HttpNetworkSession::Params* params) {
  95   params->host_resolver = context->host_resolver();
  96   params->cert_verifier = context->cert_verifier();
  97   params->channel_id_service = context->channel_id_service();
  98   params->transport_security_state = context->transport_security_state();
  99   params->proxy_service = context->proxy_service();
 100   params->ssl_config_service = context->ssl_config_service();
 101   params->http_auth_handler_factory = context->http_auth_handler_factory();
 102   params->network_delegate = context->network_delegate();
 103   params->http_server_properties = context->http_server_properties();
 104   params->net_log = context->net_log();
 105   // TODO(sgurun) remove once crbug.com/329681 is fixed.
 106   params->next_protos = net::NextProtosSpdy31();
 107   params->use_alternate_protocols = true;
 108
 109   ApplyCmdlineOverridesToNetworkSessionParams(params);
 110 }
 111
 112 scoped_ptr<net::URLRequestJobFactory> CreateJobFactory(
 113     content::ProtocolHandlerMap* protocol_handlers,
 114     content::URLRequestInterceptorScopedVector request_interceptors) {
 115   scoped_ptr<AwURLRequestJobFactory> aw_job_factory(new AwURLRequestJobFactory);
 116   bool set_protocol = aw_job_factory->SetProtocolHandler(
 117       url::kFileScheme,
 118       new net::FileProtocolHandler(
 119           content::BrowserThread::GetBlockingPool()->
 120               GetTaskRunnerWithShutdownBehavior(
 121                   base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
 122   DCHECK(set_protocol);
 123   set_protocol = aw_job_factory->SetProtocolHandler(
 124       url::kDataScheme, new net::DataProtocolHandler());
 125   DCHECK(set_protocol);
 126   set_protocol = aw_job_factory->SetProtocolHandler(
 127       url::kBlobScheme,
 128       (*protocol_handlers)[url::kBlobScheme].release());
 129   DCHECK(set_protocol);
 130   set_protocol = aw_job_factory->SetProtocolHandler(
 131       url::kFileSystemScheme,
 132       (*protocol_handlers)[url::kFileSystemScheme].release());
 133   DCHECK(set_protocol);
 134   set_protocol = aw_job_factory->SetProtocolHandler(
 135       content::kChromeUIScheme,
 136       (*protocol_handlers)[content::kChromeUIScheme].release());
 137   DCHECK(set_protocol);
 138   set_protocol = aw_job_factory->SetProtocolHandler(
 139       content::kChromeDevToolsScheme,
 140       (*protocol_handlers)[content::kChromeDevToolsScheme].release());
 141   DCHECK(set_protocol);
 142   protocol_handlers->clear();
 143
 144   // Note that even though the content:// scheme handler is created here,
 145   // it cannot be used by child processes until access to it is granted via
 146   // ChildProcessSecurityPolicy::GrantScheme(). This is done in
 147   // AwContentBrowserClient.
 148   request_interceptors.push_back(
 149       CreateAndroidContentRequestInterceptor().release());
 150   request_interceptors.push_back(
 151       CreateAndroidAssetFileRequestInterceptor().release());
 152   // The AwRequestInterceptor must come after the content and asset file job
 153   // factories. This for WebViewClassic compatibility where it was not
 154   // possible to intercept resource loads to resolvable content:// and
 155   // file:// URIs.
 156   // This logical dependency is also the reason why the Content
 157   // URLRequestInterceptor has to be added as an interceptor rather than as a
 158   // ProtocolHandler.
 159   request_interceptors.push_back(new AwRequestInterceptor());
 160
 161   // The chain of responsibility will execute the handlers in reverse to the
 162   // order in which the elements of the chain are created.
 163   scoped_ptr<net::URLRequestJobFactory> job_factory(aw_job_factory.Pass());
 164   for (content::URLRequestInterceptorScopedVector::reverse_iterator i =
 165            request_interceptors.rbegin();
 166        i != request_interceptors.rend();
 167        ++i) {
 168     job_factory.reset(new net::URLRequestInterceptingJobFactory(
 169         job_factory.Pass(), make_scoped_ptr(*i)));
 170   }
 171   request_interceptors.weak_clear();
 172
 173   return job_factory.Pass();
 174 }
 175
 176 }  // namespace
 177
 178 AwURLRequestContextGetter::AwURLRequestContextGetter(
 179     const base::FilePath& cache_path, net::CookieStore* cookie_store,
 180     scoped_ptr<data_reduction_proxy::DataReductionProxyConfigService>
 181         config_service)
 182     : cache_path_(cache_path),
 183       cookie_store_(cookie_store),
 184       net_log_(new net::NetLog()) {
 185   data_reduction_proxy_config_service_ = config_service.Pass();
 186   // CreateSystemProxyConfigService for Android must be called on main thread.
 187   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 188 }
 189
 190 AwURLRequestContextGetter::~AwURLRequestContextGetter() {
 191 }
 192
 193 void AwURLRequestContextGetter::InitializeURLRequestContext() {
 194   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 195   DCHECK(!url_request_context_);
 196
 197   net::URLRequestContextBuilder builder;
 198   builder.set_user_agent(GetUserAgent());
 199   scoped_ptr<AwNetworkDelegate> aw_network_delegate(new AwNetworkDelegate());
 200
 201   AwBrowserContext* browser_context = AwBrowserContext::GetDefault();
 202   DCHECK(browser_context);
 203
 204   // Compression statistics are not gathered for WebView, so
 205   // DataReductionProxyStatisticsPrefs is not instantiated and passed to the
 206   // network delegate.
 207   DataReductionProxySettings* data_reduction_proxy_settings =
 208       browser_context->GetDataReductionProxySettings();
 209   DCHECK(data_reduction_proxy_settings);
 210   data_reduction_proxy_auth_request_handler_.reset(
 211       new data_reduction_proxy::DataReductionProxyAuthRequestHandler(
 212           data_reduction_proxy::Client::WEBVIEW_ANDROID,
 213           data_reduction_proxy_settings->params(),
 214           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO)));
 215
 216   data_reduction_proxy::DataReductionProxyNetworkDelegate*
 217       data_reduction_proxy_network_delegate =
 218           new data_reduction_proxy::DataReductionProxyNetworkDelegate(
 219               aw_network_delegate.Pass(),
 220               data_reduction_proxy_settings->params(),
 221               data_reduction_proxy_auth_request_handler_.get(),
 222               data_reduction_proxy::DataReductionProxyNetworkDelegate::
 223                   ProxyConfigGetter());
 224
 225   builder.set_network_delegate(data_reduction_proxy_network_delegate);
 226 #if !defined(DISABLE_FTP_SUPPORT)
 227   builder.set_ftp_enabled(false);  // Android WebView does not support ftp yet.
 228 #endif
 229   DCHECK(data_reduction_proxy_config_service_.get());
 230   // Android provides a local HTTP proxy that handles all the proxying.
 231   // Create the proxy without a resolver since we rely on this local HTTP proxy.
 232   // TODO(sgurun) is this behavior guaranteed through SDK?
 233   builder.set_proxy_service(
 234       net::ProxyService::CreateWithoutProxyResolver(
 235           data_reduction_proxy_config_service_.release(),
 236           net_log_.get()));
 237   builder.set_accept_language(net::HttpUtil::GenerateAcceptLanguageHeader(
 238       AwContentBrowserClient::GetAcceptLangsImpl()));
 239   builder.set_net_log(net_log_.get());
 240   builder.set_channel_id_enabled(false);
 241   ApplyCmdlineOverridesToURLRequestContextBuilder(&builder);
 242
 243   url_request_context_.reset(builder.Build());
 244   // TODO(mnaganov): Fix URLRequestContextBuilder to use proper threads.
 245   net::HttpNetworkSession::Params network_session_params;
 246
 247   PopulateNetworkSessionParams(url_request_context_.get(),
 248                                &network_session_params);
 249
 250   net::HttpCache* main_cache = new net::HttpCache(
 251       network_session_params,
 252       new net::HttpCache::DefaultBackend(
 253           net::DISK_CACHE,
 254           net::CACHE_BACKEND_SIMPLE,
 255           cache_path_,
 256           20 * 1024 * 1024,  // 20M
 257           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE)));
 258
 259   main_http_factory_.reset(main_cache);
 260   url_request_context_->set_http_transaction_factory(main_cache);
 261   url_request_context_->set_cookie_store(cookie_store_.get());
 262
 263   job_factory_ = CreateJobFactory(&protocol_handlers_,
 264                                   request_interceptors_.Pass());
 265
 266   job_factory_.reset(new net::URLRequestInterceptingJobFactory(
 267       job_factory_.Pass(), make_scoped_ptr(
 268           new data_reduction_proxy::DataReductionProxyInterceptor(
 269               data_reduction_proxy_settings->params(), NULL,
 270               browser_context->GetDataReductionProxyEventStore()))));
 271   url_request_context_->set_job_factory(job_factory_.get());
 272 }
 273
 274 net::URLRequestContext* AwURLRequestContextGetter::GetURLRequestContext() {
 275   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 276   if (!url_request_context_)
 277     InitializeURLRequestContext();
 278
 279   return url_request_context_.get();
 280 }
 281
 282 scoped_refptr<base::SingleThreadTaskRunner>
 283 AwURLRequestContextGetter::GetNetworkTaskRunner() const {
 284   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
 285 }
 286
 287 void AwURLRequestContextGetter::SetHandlersAndInterceptors(
 288     content::ProtocolHandlerMap* protocol_handlers,
 289     content::URLRequestInterceptorScopedVector request_interceptors) {
 290   std::swap(protocol_handlers_, *protocol_handlers);
 291   request_interceptors_.swap(request_interceptors);
 292 }
 293
 294 data_reduction_proxy::DataReductionProxyAuthRequestHandler*
 295 AwURLRequestContextGetter::GetDataReductionProxyAuthRequestHandler() const {
 296   return data_reduction_proxy_auth_request_handler_.get();
 297 }
 298
 299 net::NetLog* AwURLRequestContextGetter::GetNetLog() {
 300   return net_log_.get();
 301 }
 302
 303 void AwURLRequestContextGetter::SetKeyOnIO(const std::string& key) {
 304   DCHECK(data_reduction_proxy_auth_request_handler_);
 305   data_reduction_proxy_auth_request_handler_->InitAuthentication(key);
 306 }
 307
 308 }  // namespace android_webview