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// Copyright (c) 2010 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 "chrome/browser/policy/device_management_service.h"
#include "chrome/browser/browser_thread.h"
#include "net/base/cookie_monster.h"
#include "net/base/host_resolver.h"
#include "net/base/load_flags.h"
#include "net/base/ssl_config_service_defaults.h"
#include "net/http/http_auth_handler_factory.h"
#include "net/http/http_network_layer.h"
#include "net/proxy/proxy_service.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_status.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/io_thread.h"
#include "chrome/browser/net/chrome_net_log.h"
#include "chrome/browser/policy/device_management_backend_impl.h"
#include "chrome/common/net/url_request_context_getter.h"
#include "webkit/glue/webkit_glue.h"
namespace policy {
namespace {
// Custom request context implementation that allows to override the user agent,
// amongst others. Wraps a baseline request context from which we reuse the
// networking components.
class DeviceManagementRequestContext : public URLRequestContext {
public:
explicit DeviceManagementRequestContext(URLRequestContext* base_context);
virtual ~DeviceManagementRequestContext();
private:
// Overriden from URLRequestContext.
virtual const std::string& GetUserAgent(const GURL& url) const;
};
DeviceManagementRequestContext::DeviceManagementRequestContext(
URLRequestContext* base_context) {
// Share resolver, proxy service and ssl bits with the baseline context. This
// is important so we don't make redundant requests (e.g. when resolving proxy
// auto configuration).
net_log_ = base_context->net_log();
host_resolver_ = base_context->host_resolver();
proxy_service_ = base_context->proxy_service();
ssl_config_service_ = base_context->ssl_config_service();
// Share the http session.
http_transaction_factory_ = net::HttpNetworkLayer::CreateFactory(
base_context->http_transaction_factory()->GetSession());
// No cookies, please.
cookie_store_ = new net::CookieMonster(NULL, NULL);
// Initialize these to sane values for our purposes.
accept_language_ = "*";
accept_charset_ = "*";
}
DeviceManagementRequestContext::~DeviceManagementRequestContext() {
delete http_transaction_factory_;
delete http_auth_handler_factory_;
}
const std::string& DeviceManagementRequestContext::GetUserAgent(
const GURL& url) const {
return webkit_glue::GetUserAgent(url);
}
// Request context holder.
class DeviceManagementRequestContextGetter : public URLRequestContextGetter {
public:
DeviceManagementRequestContextGetter(
URLRequestContextGetter* base_context_getter)
: base_context_getter_(base_context_getter) {}
// URLRequestContextGetter overrides.
virtual URLRequestContext* GetURLRequestContext();
virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() const;
private:
scoped_refptr<URLRequestContext> context_;
scoped_refptr<URLRequestContextGetter> base_context_getter_;
};
URLRequestContext*
DeviceManagementRequestContextGetter::GetURLRequestContext() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (!context_) {
context_ = new DeviceManagementRequestContext(
base_context_getter_->GetURLRequestContext());
}
return context_.get();
}
scoped_refptr<base::MessageLoopProxy>
DeviceManagementRequestContextGetter::GetIOMessageLoopProxy() const {
return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
}
} // namespace
DeviceManagementService::~DeviceManagementService() {
// All running jobs should have been canceled by now. If not, there are
// backend objects still around, which is an error.
DCHECK(pending_jobs_.empty());
DCHECK(queued_jobs_.empty());
}
DeviceManagementBackend* DeviceManagementService::CreateBackend() {
return new DeviceManagementBackendImpl(this);
}
void DeviceManagementService::Initialize(
URLRequestContextGetter* request_context_getter) {
DCHECK(!request_context_getter_);
request_context_getter_ =
new DeviceManagementRequestContextGetter(request_context_getter);
while (!queued_jobs_.empty()) {
StartJob(queued_jobs_.front());
queued_jobs_.pop_front();
}
}
void DeviceManagementService::Shutdown() {
for (JobFetcherMap::iterator job(pending_jobs_.begin());
job != pending_jobs_.end();
++job) {
delete job->first;
queued_jobs_.push_back(job->second);
}
}
DeviceManagementService::DeviceManagementService(
const std::string& server_url)
: server_url_(server_url) {
}
void DeviceManagementService::AddJob(DeviceManagementJob* job) {
if (request_context_getter_.get())
StartJob(job);
else
queued_jobs_.push_back(job);
}
void DeviceManagementService::RemoveJob(DeviceManagementJob* job) {
for (JobFetcherMap::iterator entry(pending_jobs_.begin());
entry != pending_jobs_.end();
++entry) {
if (entry->second == job) {
delete entry->first;
pending_jobs_.erase(entry);
break;
}
}
}
void DeviceManagementService::StartJob(DeviceManagementJob* job) {
URLFetcher* fetcher = URLFetcher::Create(0, job->GetURL(server_url_),
URLFetcher::POST, this);
fetcher->set_load_flags(net::LOAD_DO_NOT_SEND_COOKIES |
net::LOAD_DO_NOT_SAVE_COOKIES |
net::LOAD_DISABLE_CACHE);
fetcher->set_request_context(request_context_getter_.get());
job->ConfigureRequest(fetcher);
pending_jobs_[fetcher] = job;
fetcher->Start();
}
void DeviceManagementService::OnURLFetchComplete(
const URLFetcher* source,
const GURL& url,
const URLRequestStatus& status,
int response_code,
const ResponseCookies& cookies,
const std::string& data) {
JobFetcherMap::iterator entry(pending_jobs_.find(source));
if (entry != pending_jobs_.end()) {
DeviceManagementJob* job = entry->second;
job->HandleResponse(status, response_code, cookies, data);
pending_jobs_.erase(entry);
} else {
NOTREACHED() << "Callback from foreign URL fetcher";
}
delete source;
}
} // namespace policy
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