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cef/libcef/browser/browser_urlrequest_impl.cc

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// Copyright (c) 2012 The Chromium Embedded Framework 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 "libcef/browser/browser_urlrequest_impl.h"
#include <string>
#include <utility>
#include "libcef/browser/browser_context.h"
#include "libcef/browser/content_browser_client.h"
#include "libcef/browser/net/url_request_user_data.h"
#include "libcef/browser/request_context_impl.h"
#include "libcef/browser/thread_util.h"
#include "libcef/common/request_impl.h"
#include "libcef/common/response_impl.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_util.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/url_fetcher.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/http/http_response_headers.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "net/url_request/url_fetcher_response_writer.h"
#include "net/url_request/url_request_status.h"
using content::BrowserThread;
namespace {
class CefURLFetcherDelegate : public net::URLFetcherDelegate {
public:
CefURLFetcherDelegate(CefBrowserURLRequest::Context* context,
int request_flags);
~CefURLFetcherDelegate() override;
// net::URLFetcherDelegate methods.
void OnURLFetchComplete(const net::URLFetcher* source) override;
void OnURLFetchDownloadProgress(const net::URLFetcher* source,
int64 current,
int64 total,
int64_t current_network_bytes) override;
void OnURLFetchUploadProgress(const net::URLFetcher* source,
int64 current, int64 total) override;
private:
// The context_ pointer will outlive this object.
CefBrowserURLRequest::Context* context_;
int request_flags_;
};
class NET_EXPORT CefURLFetcherResponseWriter :
public net::URLFetcherResponseWriter {
public:
CefURLFetcherResponseWriter(
CefRefPtr<CefBrowserURLRequest> url_request,
scoped_refptr<base::SequencedTaskRunner> task_runner)
: url_request_(url_request),
task_runner_(task_runner) {
}
// net::URLFetcherResponseWriter methods.
int Initialize(const net::CompletionCallback& callback) override {
return net::OK;
}
int Write(net::IOBuffer* buffer,
int num_bytes,
const net::CompletionCallback& callback) override {
if (url_request_.get()) {
task_runner_->PostTask(FROM_HERE,
base::Bind(&CefURLFetcherResponseWriter::WriteOnClientThread,
url_request_, scoped_refptr<net::IOBuffer>(buffer),
num_bytes, callback,
base::MessageLoop::current()->task_runner()));
return net::ERR_IO_PENDING;
}
return num_bytes;
}
int Finish(int net_error, const net::CompletionCallback& callback) override {
if (url_request_.get())
url_request_ = NULL;
return net::OK;
}
private:
static void WriteOnClientThread(
CefRefPtr<CefBrowserURLRequest> url_request,
scoped_refptr<net::IOBuffer> buffer,
int num_bytes,
const net::CompletionCallback& callback,
scoped_refptr<base::SequencedTaskRunner> source_message_loop_proxy) {
CefRefPtr<CefURLRequestClient> client = url_request->GetClient();
if (client.get())
client->OnDownloadData(url_request.get(), buffer->data(), num_bytes);
source_message_loop_proxy->PostTask(FROM_HERE,
base::Bind(&CefURLFetcherResponseWriter::ContinueOnSourceThread,
num_bytes, callback));
}
static void ContinueOnSourceThread(
int num_bytes,
const net::CompletionCallback& callback) {
callback.Run(num_bytes);
}
CefRefPtr<CefBrowserURLRequest> url_request_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
DISALLOW_COPY_AND_ASSIGN(CefURLFetcherResponseWriter);
};
base::SupportsUserData::Data* CreateURLRequestUserData(
CefRefPtr<CefURLRequestClient> client) {
return new CefURLRequestUserData(client);
}
} // namespace
// CefBrowserURLRequest::Context ----------------------------------------------
class CefBrowserURLRequest::Context
: public base::RefCountedThreadSafe<CefBrowserURLRequest::Context> {
public:
Context(CefRefPtr<CefBrowserURLRequest> url_request,
CefRefPtr<CefRequest> request,
CefRefPtr<CefURLRequestClient> client,
CefRefPtr<CefRequestContext> request_context)
: url_request_(url_request),
request_(request),
client_(client),
request_context_(request_context),
task_runner_(base::MessageLoop::current()->task_runner()),
status_(UR_IO_PENDING),
error_code_(ERR_NONE),
upload_data_size_(0),
got_upload_progress_complete_(false) {
// Mark the request as read-only.
static_cast<CefRequestImpl*>(request_.get())->SetReadOnly(true);
}
inline bool CalledOnValidThread() {
return task_runner_->RunsTasksOnCurrentThread();
}
bool Start() {
DCHECK(CalledOnValidThread());
const GURL& url = GURL(request_->GetURL().ToString());
if (!url.is_valid())
return false;
const std::string& method =
base::ToLowerASCII(request_->GetMethod().ToString());
net::URLFetcher::RequestType request_type = net::URLFetcher::GET;
if (base::LowerCaseEqualsASCII(method, "get")) {
} else if (base::LowerCaseEqualsASCII(method, "post")) {
request_type = net::URLFetcher::POST;
} else if (base::LowerCaseEqualsASCII(method, "head")) {
request_type = net::URLFetcher::HEAD;
} else if (base::LowerCaseEqualsASCII(method, "delete")) {
request_type = net::URLFetcher::DELETE_REQUEST;
} else if (base::LowerCaseEqualsASCII(method, "put")) {
request_type = net::URLFetcher::PUT;
} else {
NOTREACHED() << "invalid request type";
return false;
}
BrowserThread::PostTaskAndReply(
BrowserThread::UI,
FROM_HERE,
base::Bind(&CefBrowserURLRequest::Context::GetRequestContextOnUIThread,
this),
base::Bind(&CefBrowserURLRequest::Context::ContinueOnOriginatingThread,
this, url, request_type));
return true;
}
void GetRequestContextOnUIThread() {
CEF_REQUIRE_UIT();
// Get or create the request context and browser context.
CefRefPtr<CefRequestContextImpl> request_context_impl =
CefRequestContextImpl::GetOrCreateForRequestContext(request_context_);
DCHECK(request_context_impl.get());
CefBrowserContext* browser_context =
request_context_impl->GetBrowserContext();
DCHECK(browser_context);
if (!request_context_.get())
request_context_ = request_context_impl.get();
// The request context is created on the UI thread but accessed and
// destroyed on the IO thread.
url_request_getter_ = browser_context->GetRequestContext();
}
void ContinueOnOriginatingThread(const GURL& url,
net::URLFetcher::RequestType request_type) {
DCHECK(CalledOnValidThread());
int request_flags = request_->GetFlags();
fetcher_delegate_.reset(new CefURLFetcherDelegate(this, request_flags));
fetcher_ = net::URLFetcher::Create(url, request_type,
fetcher_delegate_.get());
DCHECK(url_request_getter_.get());
fetcher_->SetRequestContext(url_request_getter_.get());
static_cast<CefRequestImpl*>(request_.get())->Get(*fetcher_,
upload_data_size_);
fetcher_->SetURLRequestUserData(
CefURLRequestUserData::kUserDataKey,
base::Bind(&CreateURLRequestUserData, client_));
std::unique_ptr<net::URLFetcherResponseWriter> response_writer;
if (request_flags & UR_FLAG_NO_DOWNLOAD_DATA) {
response_writer.reset(new CefURLFetcherResponseWriter(NULL, NULL));
} else {
response_writer.reset(
new CefURLFetcherResponseWriter(url_request_, task_runner_));
}
fetcher_->SaveResponseWithWriter(std::move(response_writer));
fetcher_->Start();
}
void Cancel() {
DCHECK(CalledOnValidThread());
// The request may already be complete.
if (!fetcher_.get())
return;
// Cancel the fetch by deleting the fetcher.
fetcher_.reset(NULL);
status_ = UR_CANCELED;
error_code_ = ERR_ABORTED;
OnComplete();
}
void OnComplete() {
DCHECK(CalledOnValidThread());
if (fetcher_.get()) {
const net::URLRequestStatus& status = fetcher_->GetStatus();
if (status.is_success())
NotifyUploadProgressIfNecessary();
switch (status.status()) {
case net::URLRequestStatus::SUCCESS:
status_ = UR_SUCCESS;
break;
case net::URLRequestStatus::IO_PENDING:
status_ = UR_IO_PENDING;
break;
case net::URLRequestStatus::CANCELED:
status_ = UR_CANCELED;
break;
case net::URLRequestStatus::FAILED:
status_ = UR_FAILED;
break;
}
error_code_ = static_cast<CefURLRequest::ErrorCode>(status.error());
if(!response_.get())
OnResponse();
}
DCHECK(url_request_.get());
client_->OnRequestComplete(url_request_.get());
if (fetcher_.get())
fetcher_.reset(NULL);
// This may result in the Context object being deleted.
url_request_ = NULL;
}
void OnDownloadProgress(int64 current, int64 total) {
DCHECK(CalledOnValidThread());
DCHECK(url_request_.get());
if(!response_.get())
OnResponse();
NotifyUploadProgressIfNecessary();
client_->OnDownloadProgress(url_request_.get(), current, total);
}
void OnDownloadData(std::unique_ptr<std::string> download_data) {
DCHECK(CalledOnValidThread());
DCHECK(url_request_.get());
if(!response_.get())
OnResponse();
client_->OnDownloadData(url_request_.get(), download_data->c_str(),
download_data->length());
}
void OnUploadProgress(int64 current, int64 total) {
DCHECK(CalledOnValidThread());
DCHECK(url_request_.get());
if (current == total)
got_upload_progress_complete_ = true;
client_->OnUploadProgress(url_request_.get(), current, total);
}
CefRefPtr<CefRequest> request() { return request_; }
CefRefPtr<CefURLRequestClient> client() { return client_; }
CefURLRequest::Status status() { return status_; }
CefURLRequest::ErrorCode error_code() { return error_code_; }
CefRefPtr<CefResponse> response() { return response_; }
private:
friend class base::RefCountedThreadSafe<CefBrowserURLRequest::Context>;
~Context() {
if (fetcher_.get()) {
// Delete the fetcher object on the thread that created it.
task_runner_->DeleteSoon(FROM_HERE, fetcher_.release());
}
}
void NotifyUploadProgressIfNecessary() {
if (!got_upload_progress_complete_ && upload_data_size_ > 0) {
// URLFetcher sends upload notifications using a timer and will not send
// a notification if the request completes too quickly. We therefore
// send the notification here if necessary.
client_->OnUploadProgress(url_request_.get(), upload_data_size_,
upload_data_size_);
got_upload_progress_complete_ = true;
}
}
void OnResponse() {
if (fetcher_.get()) {
response_ = new CefResponseImpl();
CefResponseImpl* responseImpl =
static_cast<CefResponseImpl*>(response_.get());
net::HttpResponseHeaders* headers = fetcher_->GetResponseHeaders();
if (headers)
responseImpl->SetResponseHeaders(*headers);
responseImpl->SetReadOnly(true);
}
}
// Members only accessed on the initialization thread.
CefRefPtr<CefBrowserURLRequest> url_request_;
CefRefPtr<CefRequest> request_;
CefRefPtr<CefURLRequestClient> client_;
CefRefPtr<CefRequestContext> request_context_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
std::unique_ptr<net::URLFetcher> fetcher_;
std::unique_ptr<CefURLFetcherDelegate> fetcher_delegate_;
CefURLRequest::Status status_;
CefURLRequest::ErrorCode error_code_;
CefRefPtr<CefResponse> response_;
int64 upload_data_size_;
bool got_upload_progress_complete_;
scoped_refptr<net::URLRequestContextGetter> url_request_getter_;
};
// CefURLFetcherDelegate ------------------------------------------------------
namespace {
CefURLFetcherDelegate::CefURLFetcherDelegate(
CefBrowserURLRequest::Context* context, int request_flags)
: context_(context),
request_flags_(request_flags) {
}
CefURLFetcherDelegate::~CefURLFetcherDelegate() {
}
void CefURLFetcherDelegate::OnURLFetchComplete(
const net::URLFetcher* source) {
// Complete asynchronously so as not to delete the URLFetcher while it's still
// in the call stack.
base::MessageLoop::current()->task_runner()->PostTask(FROM_HERE,
base::Bind(&CefBrowserURLRequest::Context::OnComplete, context_));
}
void CefURLFetcherDelegate::OnURLFetchDownloadProgress(
const net::URLFetcher* source,
int64 current,
int64 total,
int64_t current_network_bytes) {
context_->OnDownloadProgress(current, total);
}
void CefURLFetcherDelegate::OnURLFetchUploadProgress(
const net::URLFetcher* source,
int64 current, int64 total) {
if (request_flags_ & UR_FLAG_REPORT_UPLOAD_PROGRESS)
context_->OnUploadProgress(current, total);
}
} // namespace
// CefBrowserURLRequest -------------------------------------------------------
CefBrowserURLRequest::CefBrowserURLRequest(
CefRefPtr<CefRequest> request,
CefRefPtr<CefURLRequestClient> client,
CefRefPtr<CefRequestContext> request_context) {
context_ = new Context(this, request, client, request_context);
}
CefBrowserURLRequest::~CefBrowserURLRequest() {
}
bool CefBrowserURLRequest::Start() {
if (!VerifyContext())
return false;
return context_->Start();
}
CefRefPtr<CefRequest> CefBrowserURLRequest::GetRequest() {
if (!VerifyContext())
return NULL;
return context_->request();
}
CefRefPtr<CefURLRequestClient> CefBrowserURLRequest::GetClient() {
if (!VerifyContext())
return NULL;
return context_->client();
}
CefURLRequest::Status CefBrowserURLRequest::GetRequestStatus() {
if (!VerifyContext())
return UR_UNKNOWN;
return context_->status();
}
CefURLRequest::ErrorCode CefBrowserURLRequest::GetRequestError() {
if (!VerifyContext())
return ERR_NONE;
return context_->error_code();
}
CefRefPtr<CefResponse> CefBrowserURLRequest::GetResponse() {
if (!VerifyContext())
return NULL;
return context_->response();
}
void CefBrowserURLRequest::Cancel() {
if (!VerifyContext())
return;
return context_->Cancel();
}
bool CefBrowserURLRequest::VerifyContext() {
DCHECK(context_.get());
if (!context_->CalledOnValidThread()) {
NOTREACHED() << "called on invalid thread";
return false;
}
return true;
}
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