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// Copyright (c) 2009 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 "webkit/appcache/appcache_interceptor.h"
#include "webkit/appcache/appcache_backend_impl.h"
#include "webkit/appcache/appcache_host.h"
#include "webkit/appcache/appcache_interfaces.h"
#include "webkit/appcache/appcache_request_handler.h"
#include "webkit/appcache/appcache_service.h"
#include "webkit/appcache/appcache_url_request_job.h"
namespace appcache {
void AppCacheInterceptor::SetHandler(
URLRequest* request, AppCacheRequestHandler* handler) {
request->SetUserData(instance(), handler); // request takes ownership
}
AppCacheRequestHandler* AppCacheInterceptor::GetHandler(URLRequest* request) {
return reinterpret_cast<AppCacheRequestHandler*>(
request->GetUserData(instance()));
}
void AppCacheInterceptor::SetExtraRequestInfo(
URLRequest* request, AppCacheService* service, int process_id,
int host_id, ResourceType::Type resource_type) {
if (!service || (host_id == kNoHostId))
return;
AppCacheBackendImpl* backend = service->GetBackend(process_id);
if (!backend)
return;
// TODO(michaeln): An invalid host id is indicative of bad data
// from a child process. How should we handle that here?
AppCacheHost* host = backend->GetHost(host_id);
if (!host)
return;
// Create a handler for this request and associate it with the request.
AppCacheRequestHandler* handler =
host->CreateRequestHandler(request, resource_type);
if (handler)
SetHandler(request, handler);
}
void AppCacheInterceptor::GetExtraResponseInfo(URLRequest* request,
int64* cache_id,
GURL* manifest_url) {
DCHECK(*cache_id == kNoCacheId);
DCHECK(manifest_url->is_empty());
AppCacheRequestHandler* handler = GetHandler(request);
if (handler)
handler->GetExtraResponseInfo(cache_id, manifest_url);
}
AppCacheInterceptor::AppCacheInterceptor() {
URLRequest::RegisterRequestInterceptor(this);
}
AppCacheInterceptor::~AppCacheInterceptor() {
URLRequest::UnregisterRequestInterceptor(this);
}
URLRequestJob* AppCacheInterceptor::MaybeIntercept(URLRequest* request) {
AppCacheRequestHandler* handler = GetHandler(request);
if (!handler)
return NULL;
return handler->MaybeLoadResource(request);
}
URLRequestJob* AppCacheInterceptor::MaybeInterceptRedirect(
URLRequest* request,
const GURL& location) {
AppCacheRequestHandler* handler = GetHandler(request);
if (!handler)
return NULL;
return handler->MaybeLoadFallbackForRedirect(request, location);
}
URLRequestJob* AppCacheInterceptor::MaybeInterceptResponse(
URLRequest* request) {
AppCacheRequestHandler* handler = GetHandler(request);
if (!handler)
return NULL;
return handler->MaybeLoadFallbackForResponse(request);
}
} // namespace appcache
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