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