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// Copyright 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 "ios/net/request_tracker.h"
#include "base/logging.h"
#import "ios/net/clients/crn_forwarding_network_client.h"
#import "ios/net/clients/crn_forwarding_network_client_factory.h"
namespace net {
namespace {
// Reference to the single instance of the RequestTrackerFactory.
RequestTracker::RequestTrackerFactory* g_request_tracker_factory = nullptr;
// Array of network client factories that should be added to any new request
// tracker.
class GlobalNetworkClientFactories {
public:
static GlobalNetworkClientFactories* GetInstance() {
if (!g_global_network_client_factories)
g_global_network_client_factories = new GlobalNetworkClientFactories;
return g_global_network_client_factories;
}
// Gets the factories.
NSArray* GetFactories() {
DCHECK(thread_checker_.CalledOnValidThread());
return factories_.get();
}
// Adds a factory.
void AddFactory(CRNForwardingNetworkClientFactory* factory) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK_EQ(NSNotFound,
static_cast<NSInteger>([factories_ indexOfObject:factory]));
DCHECK(!IsSelectorOverriden(factory, @selector(clientHandlingRequest:)));
DCHECK(!IsSelectorOverriden(factory,
@selector(clientHandlingResponse:request:)));
DCHECK(!IsSelectorOverriden(
factory, @selector(clientHandlingRedirect:url:response:)));
[factories_ addObject:factory];
}
// Returns true if |factory| re-implements |selector|.
// Only used for debugging.
bool IsSelectorOverriden(CRNForwardingNetworkClientFactory* factory,
SEL selector) {
return
[factory methodForSelector:selector] !=
[CRNForwardingNetworkClientFactory instanceMethodForSelector:selector];
}
private:
GlobalNetworkClientFactories() : factories_([[NSMutableArray alloc] init]) {}
base::scoped_nsobject<NSMutableArray> factories_;
base::ThreadChecker thread_checker_;
static GlobalNetworkClientFactories* g_global_network_client_factories;
};
GlobalNetworkClientFactories*
GlobalNetworkClientFactories::g_global_network_client_factories = nullptr;
} // namespace
RequestTracker::RequestTrackerFactory::~RequestTrackerFactory() {
}
// static
void RequestTracker::SetRequestTrackerFactory(RequestTrackerFactory* factory) {
g_request_tracker_factory = factory;
}
// static
bool RequestTracker::GetRequestTracker(NSURLRequest* request,
base::WeakPtr<RequestTracker>* tracker) {
DCHECK(request);
DCHECK(tracker);
DCHECK(!tracker->get());
if (!g_request_tracker_factory) {
return true;
}
return g_request_tracker_factory->GetRequestTracker(request, tracker);
}
void RequestTracker::AddNetworkClientFactory(
CRNForwardingNetworkClientFactory* factory) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK([[factory clientClass]
isSubclassOfClass:[CRNForwardingNetworkClient class]]);
// Sanity check: We don't already have a factory of the type being added.
DCHECK([client_factories_ indexOfObjectPassingTest:^BOOL(id obj,
NSUInteger idx,
BOOL* stop) {
return [obj clientClass] == [factory clientClass];
}] == NSNotFound);
[client_factories_ addObject:factory];
if ([factory requiresOrdering]) {
[client_factories_ sortUsingSelector:@selector(orderRelativeTo:)];
}
}
// static
void RequestTracker::AddGlobalNetworkClientFactory(
CRNForwardingNetworkClientFactory* factory) {
GlobalNetworkClientFactories::GetInstance()->AddFactory(factory);
}
RequestTracker::RequestTracker()
: client_factories_([[NSMutableArray alloc] init]),
initialized_(false),
cache_mode_(CACHE_NORMAL),
weak_ptr_factory_(this) {
// RequestTracker can be created from the main thread and used from another
// thread.
thread_checker_.DetachFromThread();
}
RequestTracker::~RequestTracker() {
}
base::WeakPtr<RequestTracker> RequestTracker::GetWeakPtr() {
return weak_ptr_factory_.GetWeakPtr();
}
void RequestTracker::InvalidateWeakPtrs() {
weak_ptr_factory_.InvalidateWeakPtrs();
}
void RequestTracker::Init() {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(!initialized_);
initialized_ = true;
for (CRNForwardingNetworkClientFactory* factory in
GlobalNetworkClientFactories::GetInstance()->GetFactories()) {
AddNetworkClientFactory(factory);
}
}
// static
NSArray* RequestTracker::GlobalClientsHandlingAnyRequest() {
NSMutableArray* applicable_clients = [NSMutableArray array];
for (CRNForwardingNetworkClientFactory* factory in
GlobalNetworkClientFactories::GetInstance()->GetFactories()) {
CRNForwardingNetworkClient* client = [factory clientHandlingAnyRequest];
if (client)
[applicable_clients addObject:client];
}
return applicable_clients;
}
NSArray* RequestTracker::ClientsHandlingAnyRequest() {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(initialized_);
NSMutableArray* applicable_clients = [NSMutableArray array];
for (CRNForwardingNetworkClientFactory* factory in client_factories_.get()) {
CRNForwardingNetworkClient* client = [factory clientHandlingAnyRequest];
if (client)
[applicable_clients addObject:client];
}
return applicable_clients;
}
NSArray* RequestTracker::ClientsHandlingRequest(const URLRequest& request) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(initialized_);
NSMutableArray* applicable_clients = [NSMutableArray array];
for (CRNForwardingNetworkClientFactory* factory in client_factories_.get()) {
CRNForwardingNetworkClient* client =
[factory clientHandlingRequest:request];
if (client)
[applicable_clients addObject:client];
}
return applicable_clients;
}
NSArray* RequestTracker::ClientsHandlingRequestAndResponse(
const URLRequest& request,
NSURLResponse* response) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(initialized_);
NSMutableArray* applicable_clients = [NSMutableArray array];
for (CRNForwardingNetworkClientFactory* factory in client_factories_.get()) {
CRNForwardingNetworkClient* client =
[factory clientHandlingResponse:response request:request];
if (client)
[applicable_clients addObject:client];
}
return applicable_clients;
}
NSArray* RequestTracker::ClientsHandlingRedirect(
const URLRequest& request,
const GURL& new_url,
NSURLResponse* redirect_response) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(initialized_);
NSMutableArray* applicable_clients = [NSMutableArray array];
for (CRNForwardingNetworkClientFactory* factory in client_factories_.get()) {
CRNForwardingNetworkClient* client =
[factory clientHandlingRedirect:request
url:new_url
response:redirect_response];
if (client)
[applicable_clients addObject:client];
}
return applicable_clients;
}
RequestTracker::CacheMode RequestTracker::GetCacheMode() const {
DCHECK(thread_checker_.CalledOnValidThread());
return cache_mode_;
}
void RequestTracker::SetCacheMode(RequestTracker::CacheMode mode) {
DCHECK(thread_checker_.CalledOnValidThread());
cache_mode_ = mode;
}
} // namespace net
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