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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 "net/url_request/url_request_job_manager.h"
#include <algorithm>
#include "base/memory/singleton.h"
#include "build/build_config.h"
#include "base/strings/string_util.h"
#include "net/base/load_flags.h"
#include "net/base/net_errors.h"
#include "net/base/network_delegate.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_error_job.h"
#include "net/url_request/url_request_http_job.h"
#include "net/url_request/url_request_job_factory.h"
namespace net {
// The built-in set of protocol factories
namespace {
struct SchemeToFactory {
const char* scheme;
URLRequest::ProtocolFactory* factory;
};
} // namespace
static const SchemeToFactory kBuiltinFactories[] = {
{ "http", URLRequestHttpJob::Factory },
{ "https", URLRequestHttpJob::Factory },
#if !defined(OS_IOS)
{ "ws", URLRequestHttpJob::Factory },
{ "wss", URLRequestHttpJob::Factory },
#endif // !defined(OS_IOS)
};
// static
URLRequestJobManager* URLRequestJobManager::GetInstance() {
return base::Singleton<URLRequestJobManager>::get();
}
URLRequestJob* URLRequestJobManager::CreateJob(
URLRequest* request, NetworkDelegate* network_delegate) const {
DCHECK(IsAllowedThread());
// If we are given an invalid URL, then don't even try to inspect the scheme.
if (!request->url().is_valid())
return new URLRequestErrorJob(request, network_delegate, ERR_INVALID_URL);
// We do this here to avoid asking interceptors about unsupported schemes.
const URLRequestJobFactory* job_factory =
request->context()->job_factory();
const std::string& scheme = request->url().scheme(); // already lowercase
if (!job_factory->IsHandledProtocol(scheme)) {
return new URLRequestErrorJob(
request, network_delegate, ERR_UNKNOWN_URL_SCHEME);
}
// THREAD-SAFETY NOTICE:
// We do not need to acquire the lock here since we are only reading our
// data structures. They should only be modified on the current thread.
// See if the request should be intercepted.
//
URLRequestJob* job = job_factory->MaybeCreateJobWithProtocolHandler(
scheme, request, network_delegate);
if (job)
return job;
// See if the request should be handled by a built-in protocol factory.
for (size_t i = 0; i < arraysize(kBuiltinFactories); ++i) {
if (scheme == kBuiltinFactories[i].scheme) {
URLRequestJob* new_job =
(kBuiltinFactories[i].factory)(request, network_delegate, scheme);
DCHECK(new_job); // The built-in factories are not expected to fail!
return new_job;
}
}
// If we reached here, then it means that a registered protocol factory
// wasn't interested in handling the URL. That is fairly unexpected, and we
// don't have a specific error to report here :-(
LOG(WARNING) << "Failed to map: " << request->url().spec();
return new URLRequestErrorJob(request, network_delegate, ERR_FAILED);
}
URLRequestJob* URLRequestJobManager::MaybeInterceptRedirect(
URLRequest* request,
NetworkDelegate* network_delegate,
const GURL& location) const {
DCHECK(IsAllowedThread());
if (!request->url().is_valid() ||
request->status().status() == URLRequestStatus::CANCELED) {
return NULL;
}
const URLRequestJobFactory* job_factory = NULL;
job_factory = request->context()->job_factory();
const std::string& scheme = request->url().scheme(); // already lowercase
if (!job_factory->IsHandledProtocol(scheme))
return NULL;
URLRequestJob* job =
request->context()->job_factory()->MaybeInterceptRedirect(
request, network_delegate, location);
if (job)
return job;
return NULL;
}
URLRequestJob* URLRequestJobManager::MaybeInterceptResponse(
URLRequest* request, NetworkDelegate* network_delegate) const {
DCHECK(IsAllowedThread());
if (!request->url().is_valid() ||
request->status().status() == URLRequestStatus::CANCELED) {
return NULL;
}
const URLRequestJobFactory* job_factory = NULL;
job_factory = request->context()->job_factory();
const std::string& scheme = request->url().scheme(); // already lowercase
if (!job_factory->IsHandledProtocol(scheme))
return NULL;
URLRequestJob* job =
request->context()->job_factory()->MaybeInterceptResponse(
request, network_delegate);
if (job)
return job;
return NULL;
}
// static
bool URLRequestJobManager::SupportsScheme(const std::string& scheme) {
for (size_t i = 0; i < arraysize(kBuiltinFactories); ++i) {
if (base::LowerCaseEqualsASCII(scheme, kBuiltinFactories[i].scheme))
return true;
}
return false;
}
URLRequestJobManager::URLRequestJobManager() {
}
URLRequestJobManager::~URLRequestJobManager() {}
} // namespace net
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