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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "android_webview/browser/aw_request_interceptor.h"
#include "android_webview/browser/aw_contents_io_thread_client.h"
#include "android_webview/browser/aw_web_resource_response.h"
#include "base/android/jni_string.h"
#include "base/memory/scoped_ptr.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/resource_request_info.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_job.h"
using content::BrowserThread;
using content::RenderViewHost;
using content::ResourceRequestInfo;
namespace android_webview {
namespace {
const void* kRequestAlreadyQueriedDataKey = &kRequestAlreadyQueriedDataKey;
} // namespace
AwRequestInterceptor::AwRequestInterceptor() {
}
AwRequestInterceptor::~AwRequestInterceptor() {
}
scoped_ptr<AwWebResourceResponse>
AwRequestInterceptor::QueryForAwWebResourceResponse(
net::URLRequest* request) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
int render_process_id, render_frame_id;
if (!ResourceRequestInfo::GetRenderFrameForRequest(
request, &render_process_id, &render_frame_id))
return scoped_ptr<AwWebResourceResponse>();
scoped_ptr<AwContentsIoThreadClient> io_thread_client =
AwContentsIoThreadClient::FromID(render_process_id, render_frame_id);
if (!io_thread_client.get())
return scoped_ptr<AwWebResourceResponse>();
return io_thread_client->ShouldInterceptRequest(request).Pass();
}
net::URLRequestJob* AwRequestInterceptor::MaybeInterceptRequest(
net::URLRequest* request,
net::NetworkDelegate* network_delegate) const {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// See if we've already found out the aw_web_resource_response for this
// request.
// This is done not only for efficiency reasons, but also for correctness
// as it is possible for the Interceptor chain to be invoked more than once
// in which case we don't want to query the embedder multiple times.
// Note: The Interceptor chain is not invoked more than once if we create a
// URLRequestJob in this method, so this is only caching negative hits.
if (request->GetUserData(kRequestAlreadyQueriedDataKey))
return NULL;
request->SetUserData(kRequestAlreadyQueriedDataKey,
new base::SupportsUserData::Data());
scoped_ptr<AwWebResourceResponse> aw_web_resource_response =
QueryForAwWebResourceResponse(request);
if (!aw_web_resource_response)
return NULL;
// The newly created job will own the AwWebResourceResponse.
return AwWebResourceResponse::CreateJobFor(
aw_web_resource_response.Pass(), request, network_delegate);
}
} // namespace android_webview
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