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// Copyright (c) 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.
#ifndef NET_DNS_DNS_CONFIG_SERVICE_POSIX_H_
#define NET_DNS_DNS_CONFIG_SERVICE_POSIX_H_
#include <sys/types.h>
#include <netinet/in.h>
#include <resolv.h>
#include "base/compiler_specific.h"
#include "net/base/net_export.h"
#include "net/dns/dns_config_service.h"
namespace net {
// Use DnsConfigService::CreateSystemService to use it outside of tests.
namespace internal {
class NET_EXPORT_PRIVATE DnsConfigServicePosix : public DnsConfigService {
public:
DnsConfigServicePosix();
virtual ~DnsConfigServicePosix();
protected:
// DnsConfigService:
virtual void ReadNow() OVERRIDE;
virtual bool StartWatching() OVERRIDE;
private:
class Watcher;
class ConfigReader;
class HostsReader;
void OnConfigChanged(bool succeeded);
void OnHostsChanged(bool succeeded);
scoped_ptr<Watcher> watcher_;
scoped_refptr<ConfigReader> config_reader_;
scoped_refptr<HostsReader> hosts_reader_;
DISALLOW_COPY_AND_ASSIGN(DnsConfigServicePosix);
};
enum ConfigParsePosixResult {
CONFIG_PARSE_POSIX_OK = 0,
CONFIG_PARSE_POSIX_RES_INIT_FAILED,
CONFIG_PARSE_POSIX_RES_INIT_UNSET,
CONFIG_PARSE_POSIX_BAD_ADDRESS,
CONFIG_PARSE_POSIX_BAD_EXT_STRUCT,
CONFIG_PARSE_POSIX_NULL_ADDRESS,
CONFIG_PARSE_POSIX_NO_NAMESERVERS,
CONFIG_PARSE_POSIX_MISSING_OPTIONS,
CONFIG_PARSE_POSIX_UNHANDLED_OPTIONS,
CONFIG_PARSE_POSIX_MAX // Bounding values for enumeration.
};
// Fills in |dns_config| from |res|.
ConfigParsePosixResult NET_EXPORT_PRIVATE ConvertResStateToDnsConfig(
const struct __res_state& res, DnsConfig* dns_config);
} // namespace internal
} // namespace net
#endif // NET_DNS_DNS_CONFIG_SERVICE_POSIX_H_
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