blob: fb960738060ff7b7a37be5f856c4dacaafe1f05c [file] [log] [blame]
// Copyright (c) 2010 The Chromium OS 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 <deque>
#include <string>
#include <base/logging.h>
#include <google/protobuf/stubs/common.h>
#include "update_engine/utils.h"
namespace chromeos_update_engine {
extern const char kNoProxy[];
// Callback for a call to GetProxiesForUrl().
// Resultant proxies are in |out_proxy|. Each will be in one of the
// following forms:
// http://<host>[:<port>] - HTTP proxy
// socks{4,5}://<host>[:<port>] - SOCKS4/5 proxy
// kNoProxy - no proxy
typedef void (*ProxiesResolvedFn)(const std::deque<std::string>& proxies,
void* data);
class ProxyResolver {
ProxyResolver() {}
virtual ~ProxyResolver() {}
// Finds proxies for the given URL and returns them via the callback.
// |data| will be passed to the callback.
// Returns true on success.
virtual bool GetProxiesForUrl(const std::string& url,
ProxiesResolvedFn callback,
void* data) = 0;
// Always says to not use a proxy
class DirectProxyResolver : public ProxyResolver {
DirectProxyResolver() : idle_callback_id_(0), num_proxies_(1) {}
virtual ~DirectProxyResolver();
virtual bool GetProxiesForUrl(const std::string& url,
ProxiesResolvedFn callback,
void* data);
// Set the number of direct (non-) proxies to be returned by resolver.
// The default value is 1; higher numbers are currently used in testing.
inline void set_num_proxies(size_t num_proxies) {
num_proxies_ = num_proxies;
// The ID of the idle main loop callback
guint idle_callback_id_;
// Number of direct proxies to return on resolved list; currently used for
// testing.
size_t num_proxies_;
// The MainLoop callback, from here we return to the client.
void ReturnCallback(ProxiesResolvedFn callback, void* data);
} // namespace chromeos_update_engine