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// Copyright 2011 The Chromium Authors
// 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_factory.h"
#include "base/containers/contains.h"
#include "net/base/net_errors.h"
#include "net/net_buildflags.h"
#include "net/url_request/url_request.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_interceptor.h"
#include "url/gurl.h"
#include "url/url_constants.h"
namespace net {
namespace {
URLRequestInterceptor* g_interceptor_for_testing = nullptr;
// TODO(mmenke): Look into removing this class and
// URLRequestJobFactory::ProtocolHandlers completely. The only other subclass
// is iOS-only.
class HttpProtocolHandler : public URLRequestJobFactory::ProtocolHandler {
public:
// URLRequest::is_for_websockets() must match `is_for_websockets`, or requests
// will be failed. This is so that attempts to fetch WebSockets requests
// fails, and attempts to use HTTP URLs for WebSockets also fail.
explicit HttpProtocolHandler(bool is_for_websockets)
: is_for_websockets_(is_for_websockets) {}
HttpProtocolHandler(const HttpProtocolHandler&) = delete;
HttpProtocolHandler& operator=(const HttpProtocolHandler&) = delete;
~HttpProtocolHandler() override = default;
std::unique_ptr<URLRequestJob> CreateJob(URLRequest* request) const override {
if (request->is_for_websockets() != is_for_websockets_) {
return std::make_unique<URLRequestErrorJob>(request,
ERR_UNKNOWN_URL_SCHEME);
}
return URLRequestHttpJob::Create(request);
}
const bool is_for_websockets_;
};
} // namespace
URLRequestJobFactory::ProtocolHandler::~ProtocolHandler() = default;
bool URLRequestJobFactory::ProtocolHandler::IsSafeRedirectTarget(
const GURL& location) const {
return true;
}
URLRequestJobFactory::URLRequestJobFactory() {
SetProtocolHandler(url::kHttpScheme, std::make_unique<HttpProtocolHandler>(
/*is_for_websockets=*/false));
SetProtocolHandler(url::kHttpsScheme, std::make_unique<HttpProtocolHandler>(
/*is_for_websockets=*/false));
#if BUILDFLAG(ENABLE_WEBSOCKETS)
SetProtocolHandler(url::kWsScheme, std::make_unique<HttpProtocolHandler>(
/*is_for_websockets=*/true));
SetProtocolHandler(url::kWssScheme, std::make_unique<HttpProtocolHandler>(
/*is_for_websockets=*/true));
#endif // BUILDFLAG(ENABLE_WEBSOCKETS)
}
URLRequestJobFactory::~URLRequestJobFactory() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
}
bool URLRequestJobFactory::SetProtocolHandler(
const std::string& scheme,
std::unique_ptr<ProtocolHandler> protocol_handler) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (!protocol_handler) {
auto it = protocol_handler_map_.find(scheme);
if (it == protocol_handler_map_.end())
return false;
protocol_handler_map_.erase(it);
return true;
}
if (base::Contains(protocol_handler_map_, scheme))
return false;
protocol_handler_map_[scheme] = std::move(protocol_handler);
return true;
}
std::unique_ptr<URLRequestJob> URLRequestJobFactory::CreateJob(
URLRequest* request) const {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
// If we are given an invalid URL, then don't even try to inspect the scheme.
if (!request->url().is_valid())
return std::make_unique<URLRequestErrorJob>(request, ERR_INVALID_URL);
if (g_interceptor_for_testing) {
std::unique_ptr<URLRequestJob> job(
g_interceptor_for_testing->MaybeInterceptRequest(request));
if (job)
return job;
}
auto it = protocol_handler_map_.find(request->url().scheme());
if (it == protocol_handler_map_.end()) {
return std::make_unique<URLRequestErrorJob>(request,
ERR_UNKNOWN_URL_SCHEME);
}
return it->second->CreateJob(request);
}
bool URLRequestJobFactory::IsSafeRedirectTarget(const GURL& location) const {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (!location.is_valid()) {
// Error cases are safely handled.
return true;
}
auto it = protocol_handler_map_.find(location.scheme());
if (it == protocol_handler_map_.end()) {
// Unhandled cases are safely handled.
return true;
}
return it->second->IsSafeRedirectTarget(location);
}
void URLRequestJobFactory::SetInterceptorForTesting(
URLRequestInterceptor* interceptor) {
DCHECK(!interceptor || !g_interceptor_for_testing);
g_interceptor_for_testing = interceptor;
}
} // namespace net
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