aw_url_request_context_getter.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
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 "components/data_reduction_proxy/browser/data_reduction_proxy_config_service.h"
20#include "components/data_reduction_proxy/browser/data_reduction_proxy_settings.h"
21#include "components/data_reduction_proxy/browser/http_auth_handler_data_reduction_proxy.h"
22#include "content/public/browser/browser_thread.h"
23#include "content/public/browser/content_browser_client.h"
24#include "content/public/browser/cookie_store_factory.h"
25#include "content/public/common/content_client.h"
26#include "content/public/common/content_switches.h"
27#include "content/public/common/url_constants.h"
28#include "net/base/cache_type.h"
29#include "net/cookies/cookie_store.h"
30#include "net/dns/mapped_host_resolver.h"
31#include "net/http/http_cache.h"
32#include "net/http/http_stream_factory.h"
33#include "net/proxy/proxy_service.h"
34#include "net/socket/next_proto.h"
35#include "net/url_request/data_protocol_handler.h"
36#include "net/url_request/file_protocol_handler.h"
37#include "net/url_request/url_request_context_builder.h"
38#include "net/url_request/url_request_context.h"
39#include "net/url_request/url_request_intercepting_job_factory.h"
40#include "net/url_request/url_request_interceptor.h"
41
42using content::BrowserThread;
43using data_reduction_proxy::DataReductionProxySettings;
44
45namespace android_webview {
46
47
48namespace {
49
50void ApplyCmdlineOverridesToURLRequestContextBuilder(
51    net::URLRequestContextBuilder* builder) {
52  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
53  if (command_line.HasSwitch(switches::kHostResolverRules)) {
54    // If hostname remappings were specified on the command-line, layer these
55    // rules on top of the real host resolver. This allows forwarding all
56    // requests through a designated test server.
57    scoped_ptr<net::MappedHostResolver> host_resolver(
58        new net::MappedHostResolver(
59            net::HostResolver::CreateDefaultResolver(NULL)));
60    host_resolver->SetRulesFromString(
61        command_line.GetSwitchValueASCII(switches::kHostResolverRules));
62    builder->set_host_resolver(host_resolver.release());
63  }
64}
65
66void ApplyCmdlineOverridesToNetworkSessionParams(
67    net::HttpNetworkSession::Params* params) {
68  int value;
69  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
70  if (command_line.HasSwitch(switches::kTestingFixedHttpPort)) {
71    base::StringToInt(command_line.GetSwitchValueASCII(
72        switches::kTestingFixedHttpPort), &value);
73    params->testing_fixed_http_port = value;
74  }
75  if (command_line.HasSwitch(switches::kTestingFixedHttpsPort)) {
76    base::StringToInt(command_line.GetSwitchValueASCII(
77        switches::kTestingFixedHttpsPort), &value);
78    params->testing_fixed_https_port = value;
79  }
80}
81
82void PopulateNetworkSessionParams(
83    net::URLRequestContext* context,
84    net::HttpNetworkSession::Params* params) {
85  params->host_resolver = context->host_resolver();
86  params->cert_verifier = context->cert_verifier();
87  params->server_bound_cert_service = context->server_bound_cert_service();
88  params->transport_security_state = context->transport_security_state();
89  params->proxy_service = context->proxy_service();
90  params->ssl_config_service = context->ssl_config_service();
91  params->http_auth_handler_factory = context->http_auth_handler_factory();
92  params->network_delegate = context->network_delegate();
93  params->http_server_properties = context->http_server_properties();
94  params->net_log = context->net_log();
95
96  // TODO(sgurun) remove once crbug.com/329681 is fixed.
97  params->next_protos = net::NextProtosSpdy31();
98  params->use_alternate_protocols = true;
99
100  ApplyCmdlineOverridesToNetworkSessionParams(params);
101}
102
103scoped_ptr<net::URLRequestJobFactory> CreateJobFactory(
104    content::ProtocolHandlerMap* protocol_handlers) {
105  scoped_ptr<AwURLRequestJobFactory> aw_job_factory(new AwURLRequestJobFactory);
106  bool set_protocol = aw_job_factory->SetProtocolHandler(
107      url::kFileScheme,
108      new net::FileProtocolHandler(
109          content::BrowserThread::GetBlockingPool()->
110              GetTaskRunnerWithShutdownBehavior(
111                  base::SequencedWorkerPool::SKIP_ON_SHUTDOWN)));
112  DCHECK(set_protocol);
113  set_protocol = aw_job_factory->SetProtocolHandler(
114      url::kDataScheme, new net::DataProtocolHandler());
115  DCHECK(set_protocol);
116  set_protocol = aw_job_factory->SetProtocolHandler(
117      url::kBlobScheme,
118      (*protocol_handlers)[url::kBlobScheme].release());
119  DCHECK(set_protocol);
120  set_protocol = aw_job_factory->SetProtocolHandler(
121      url::kFileSystemScheme,
122      (*protocol_handlers)[url::kFileSystemScheme].release());
123  DCHECK(set_protocol);
124  set_protocol = aw_job_factory->SetProtocolHandler(
125      content::kChromeUIScheme,
126      (*protocol_handlers)[content::kChromeUIScheme].release());
127  DCHECK(set_protocol);
128  set_protocol = aw_job_factory->SetProtocolHandler(
129      content::kChromeDevToolsScheme,
130      (*protocol_handlers)[content::kChromeDevToolsScheme].release());
131  DCHECK(set_protocol);
132  protocol_handlers->clear();
133
134  // Create a chain of URLRequestJobFactories. The handlers will be invoked
135  // in the order in which they appear in the |request_interceptors| vector.
136  typedef std::vector<net::URLRequestInterceptor*>
137      URLRequestInterceptorVector;
138  URLRequestInterceptorVector request_interceptors;
139
140  // Note that even though the content:// scheme handler is created here,
141  // it cannot be used by child processes until access to it is granted via
142  // ChildProcessSecurityPolicy::GrantScheme(). This is done in
143  // AwContentBrowserClient.
144  request_interceptors.push_back(
145      CreateAndroidContentRequestInterceptor().release());
146  request_interceptors.push_back(
147      CreateAndroidAssetFileRequestInterceptor().release());
148  // The AwRequestInterceptor must come after the content and asset file job
149  // factories. This for WebViewClassic compatibility where it was not
150  // possible to intercept resource loads to resolvable content:// and
151  // file:// URIs.
152  // This logical dependency is also the reason why the Content
153  // URLRequestInterceptor has to be added as an interceptor rather than as a
154  // ProtocolHandler.
155  request_interceptors.push_back(new AwRequestInterceptor());
156
157  // The chain of responsibility will execute the handlers in reverse to the
158  // order in which the elements of the chain are created.
159  scoped_ptr<net::URLRequestJobFactory> job_factory(aw_job_factory.Pass());
160  for (URLRequestInterceptorVector::reverse_iterator
161           i = request_interceptors.rbegin();
162       i != request_interceptors.rend();
163       ++i) {
164    job_factory.reset(new net::URLRequestInterceptingJobFactory(
165        job_factory.Pass(), make_scoped_ptr(*i)));
166  }
167
168  return job_factory.Pass();
169}
170
171}  // namespace
172
173AwURLRequestContextGetter::AwURLRequestContextGetter(
174    const base::FilePath& partition_path, net::CookieStore* cookie_store)
175    : partition_path_(partition_path),
176      cookie_store_(cookie_store),
177      proxy_config_service_(new DataReductionProxyConfigService(
178          scoped_ptr<net::ProxyConfigService>(
179              net::ProxyService::CreateSystemProxyConfigService(
180                  GetNetworkTaskRunner(),
181                  NULL /* Ignored on Android */)).Pass())) {
182  // CreateSystemProxyConfigService for Android must be called on main thread.
183  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
184}
185
186AwURLRequestContextGetter::~AwURLRequestContextGetter() {
187}
188
189void AwURLRequestContextGetter::InitializeURLRequestContext() {
190  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
191  DCHECK(!url_request_context_);
192
193  net::URLRequestContextBuilder builder;
194  builder.set_user_agent(GetUserAgent());
195  builder.set_network_delegate(new AwNetworkDelegate());
196#if !defined(DISABLE_FTP_SUPPORT)
197  builder.set_ftp_enabled(false);  // Android WebView does not support ftp yet.
198#endif
199  builder.set_proxy_config_service(proxy_config_service_.release());
200  builder.set_accept_language(net::HttpUtil::GenerateAcceptLanguageHeader(
201      AwContentBrowserClient::GetAcceptLangsImpl()));
202  ApplyCmdlineOverridesToURLRequestContextBuilder(&builder);
203
204
205  builder.add_http_auth_handler_factory(
206      data_reduction_proxy::HttpAuthHandlerDataReductionProxy::Scheme(),
207      new data_reduction_proxy::HttpAuthHandlerDataReductionProxy::Factory(
208          DataReductionProxySettings::GetDataReductionProxies()));
209
210  url_request_context_.reset(builder.Build());
211  // TODO(mnaganov): Fix URLRequestContextBuilder to use proper threads.
212  net::HttpNetworkSession::Params network_session_params;
213
214  PopulateNetworkSessionParams(url_request_context_.get(),
215                               &network_session_params);
216
217  net::HttpCache* main_cache = new net::HttpCache(
218      network_session_params,
219      new net::HttpCache::DefaultBackend(
220          net::DISK_CACHE,
221          net::CACHE_BACKEND_SIMPLE,
222          partition_path_.Append(FILE_PATH_LITERAL("Cache")),
223          20 * 1024 * 1024,  // 20M
224          BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE)));
225
226  AwBrowserContext* browser_context = AwBrowserContext::GetDefault();
227  DCHECK(browser_context);
228  DataReductionProxySettings* drp_settings =
229      browser_context->GetDataReductionProxySettings();
230  DCHECK(drp_settings);
231  std::string drp_key = drp_settings->key();
232  // Only precache credentials if a key is available at URLRequestContext
233  // initialization.
234  if (!drp_key.empty()) {
235  DataReductionProxySettings::InitDataReductionProxySession(
236      main_cache->GetSession(), drp_settings->key());
237  }
238
239  main_http_factory_.reset(main_cache);
240  url_request_context_->set_http_transaction_factory(main_cache);
241  url_request_context_->set_cookie_store(cookie_store_);
242
243  job_factory_ = CreateJobFactory(&protocol_handlers_);
244  url_request_context_->set_job_factory(job_factory_.get());
245}
246
247net::URLRequestContext* AwURLRequestContextGetter::GetURLRequestContext() {
248  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
249  if (!url_request_context_)
250    InitializeURLRequestContext();
251
252  return url_request_context_.get();
253}
254
255scoped_refptr<base::SingleThreadTaskRunner>
256AwURLRequestContextGetter::GetNetworkTaskRunner() const {
257  return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
258}
259
260void AwURLRequestContextGetter::SetProtocolHandlers(
261    content::ProtocolHandlerMap* protocol_handlers) {
262  std::swap(protocol_handlers_, *protocol_handlers);
263}
264
265DataReductionProxyConfigService*
266AwURLRequestContextGetter::proxy_config_service() {
267  // TODO(bengr): return system config if data reduction proxy is disabled.
268  return proxy_config_service_.get();
269}
270
271}  // namespace android_webview
272