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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 "content/renderer/fetchers/resource_fetcher_impl.h"
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "third_party/WebKit/public/platform/Platform.h"
#include "third_party/WebKit/public/platform/WebHTTPBody.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "third_party/WebKit/public/platform/WebURLError.h"
#include "third_party/WebKit/public/platform/WebURLLoader.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/WebKit/public/web/WebSecurityPolicy.h"
using base::TimeDelta;
using blink::WebFrame;
using blink::WebHTTPBody;
using blink::WebSecurityPolicy;
using blink::WebURLError;
using blink::WebURLLoader;
using blink::WebURLRequest;
using blink::WebURLResponse;
namespace content {
// static
ResourceFetcher* ResourceFetcher::Create(const GURL& url) {
return new ResourceFetcherImpl(url);
}
ResourceFetcherImpl::ResourceFetcherImpl(const GURL& url)
: request_(url),
completed_(false) {
}
ResourceFetcherImpl::~ResourceFetcherImpl() {
if (!completed_ && loader_)
loader_->cancel();
}
void ResourceFetcherImpl::SetMethod(const std::string& method) {
DCHECK(!request_.isNull());
DCHECK(!loader_);
request_.setHTTPMethod(blink::WebString::fromUTF8(method));
}
void ResourceFetcherImpl::SetBody(const std::string& body) {
DCHECK(!request_.isNull());
DCHECK(!loader_);
WebHTTPBody web_http_body;
web_http_body.initialize();
web_http_body.appendData(blink::WebData(body));
request_.setHTTPBody(web_http_body);
}
void ResourceFetcherImpl::SetHeader(const std::string& header,
const std::string& value) {
DCHECK(!request_.isNull());
DCHECK(!loader_);
if (LowerCaseEqualsASCII(header, "referer")) {
blink::WebString referrer = WebSecurityPolicy::generateReferrerHeader(
blink::WebReferrerPolicyDefault,
request_.url(),
blink::WebString::fromUTF8(value));
request_.setHTTPReferrer(referrer, blink::WebReferrerPolicyDefault);
} else {
request_.setHTTPHeaderField(blink::WebString::fromUTF8(header),
blink::WebString::fromUTF8(value));
}
}
void ResourceFetcherImpl::Start(WebFrame* frame,
WebURLRequest::RequestContext request_context,
WebURLRequest::FrameType frame_type,
const Callback& callback) {
DCHECK(!loader_);
DCHECK(!request_.isNull());
DCHECK(callback_.is_null());
DCHECK(!completed_);
if (!request_.httpBody().isNull())
DCHECK_NE("GET", request_.httpMethod().utf8()) << "GETs can't have bodies.";
callback_ = callback;
request_.setRequestContext(request_context);
request_.setFrameType(frame_type);
request_.setFirstPartyForCookies(frame->document().firstPartyForCookies());
frame->dispatchWillSendRequest(request_);
loader_.reset(blink::Platform::current()->createURLLoader());
loader_->loadAsynchronously(request_, this);
// No need to hold on to the request.
request_.reset();
}
void ResourceFetcherImpl::SetTimeout(const base::TimeDelta& timeout) {
DCHECK(loader_);
DCHECK(!completed_);
timeout_timer_.Start(FROM_HERE, timeout, this,
&ResourceFetcherImpl::TimeoutFired);
}
void ResourceFetcherImpl::RunCallback(const WebURLResponse& response,
const std::string& data) {
completed_ = true;
timeout_timer_.Stop();
if (callback_.is_null())
return;
// Take a reference to the callback as running the callback may lead to our
// destruction.
Callback callback = callback_;
callback.Run(response, data);
}
void ResourceFetcherImpl::TimeoutFired() {
DCHECK(!completed_);
loader_->cancel();
RunCallback(WebURLResponse(), std::string());
}
/////////////////////////////////////////////////////////////////////////////
// WebURLLoaderClient methods
void ResourceFetcherImpl::willSendRequest(
WebURLLoader* loader, WebURLRequest& new_request,
const WebURLResponse& redirect_response) {
}
void ResourceFetcherImpl::didSendData(
WebURLLoader* loader, unsigned long long bytes_sent,
unsigned long long total_bytes_to_be_sent) {
}
void ResourceFetcherImpl::didReceiveResponse(
WebURLLoader* loader, const WebURLResponse& response) {
DCHECK(!completed_);
response_ = response;
}
void ResourceFetcherImpl::didReceiveData(
WebURLLoader* loader, const char* data, int data_length,
int encoded_data_length) {
DCHECK(!completed_);
DCHECK(data_length > 0);
data_.append(data, data_length);
}
void ResourceFetcherImpl::didReceiveCachedMetadata(
WebURLLoader* loader, const char* data, int data_length) {
DCHECK(!completed_);
DCHECK(data_length > 0);
metadata_.assign(data, data_length);
}
void ResourceFetcherImpl::didFinishLoading(
WebURLLoader* loader, double finishTime,
int64_t total_encoded_data_length) {
DCHECK(!completed_);
RunCallback(response_, data_);
}
void ResourceFetcherImpl::didFail(WebURLLoader* loader,
const WebURLError& error) {
DCHECK(!completed_);
// Go ahead and tell our delegate that we're done.
RunCallback(WebURLResponse(), std::string());
}
} // namespace content
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