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//
// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "update_engine/common/http_fetcher.h"
#include <base/bind.h>
using base::Closure;
using brillo::MessageLoop;
using std::deque;
using std::string;
namespace chromeos_update_engine {
HttpFetcher::~HttpFetcher() {
CancelProxyResolution();
}
void HttpFetcher::SetPostData(const void* data,
size_t size,
HttpContentType type) {
post_data_set_ = true;
post_data_.clear();
const char* char_data = reinterpret_cast<const char*>(data);
post_data_.insert(post_data_.end(), char_data, char_data + size);
post_content_type_ = type;
}
void HttpFetcher::SetPostData(const void* data, size_t size) {
SetPostData(data, size, kHttpContentTypeUnspecified);
}
// Proxy methods to set the proxies, then to pop them off.
void HttpFetcher::ResolveProxiesForUrl(const string& url,
const Closure& callback) {
CHECK_EQ(static_cast<Closure*>(nullptr), callback_.get());
callback_.reset(new Closure(callback));
if (!proxy_resolver_) {
LOG(INFO) << "Not resolving proxies (no proxy resolver).";
no_resolver_idle_id_ = MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&HttpFetcher::NoProxyResolverCallback,
base::Unretained(this)));
return;
}
proxy_request_ = proxy_resolver_->GetProxiesForUrl(
url, base::Bind(&HttpFetcher::ProxiesResolved, base::Unretained(this)));
}
void HttpFetcher::NoProxyResolverCallback() {
no_resolver_idle_id_ = MessageLoop::kTaskIdNull;
ProxiesResolved(deque<string>());
}
void HttpFetcher::ProxiesResolved(const deque<string>& proxies) {
proxy_request_ = kProxyRequestIdNull;
if (!proxies.empty())
SetProxies(proxies);
CHECK(callback_.get()) << "ProxiesResolved but none pending.";
Closure* callback = callback_.release();
// This may indirectly call back into ResolveProxiesForUrl():
callback->Run();
delete callback;
}
bool HttpFetcher::CancelProxyResolution() {
bool ret = false;
if (no_resolver_idle_id_ != MessageLoop::kTaskIdNull) {
ret = MessageLoop::current()->CancelTask(no_resolver_idle_id_);
no_resolver_idle_id_ = MessageLoop::kTaskIdNull;
}
if (proxy_request_ && proxy_resolver_) {
ret = proxy_resolver_->CancelProxyRequest(proxy_request_) || ret;
proxy_request_ = kProxyRequestIdNull;
}
return ret;
}
} // namespace chromeos_update_engine