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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef _D_ASYNC_NAME_RESOLVER_H_
#define _D_ASYNC_NAME_RESOLVER_H_
#include "common.h"
#include <string>
#include <deque>
#include <ares.h>
#include "SharedHandle.h"
#include "a2netcompat.h"
namespace aria2 {
class AsyncNameResolver {
#ifdef HAVE_LIBCARES1_5
friend void callback(void* arg, int status, int timeouts, struct hostent* host);
#else
friend void callback(void* arg, int status, struct hostent* host);
#endif // HAVE_LIBCARES1_5
public:
enum STATUS {
STATUS_READY,
STATUS_QUERYING,
STATUS_SUCCESS,
STATUS_ERROR,
};
private:
STATUS status;
ares_channel channel;
std::deque<std::string> _resolvedAddresses;
std::string error;
std::string _hostname;
public:
AsyncNameResolver();
~AsyncNameResolver();
void resolve(const std::string& name);
const std::deque<std::string>& getResolvedAddresses() const
{
return _resolvedAddresses;
}
const std::string& getError() const
{
return error;
}
STATUS getStatus() const
{
return status;
}
int getFds(fd_set* rfdsPtr, fd_set* wfdsPtr) const;
void process(fd_set* rfdsPtr, fd_set* wfdsPtr);
#ifdef HAVE_LIBCARES
int getsock(sock_t* sockets) const;
void process(ares_socket_t readfd, ares_socket_t writefd);
#endif // HAVE_LIBCARES
bool operator==(const AsyncNameResolver& resolver) const;
void setAddr(const std::string& addrString);
void reset();
const std::string& getHostname() const
{
return _hostname;
}
};
} // namespace aria2
#endif // _D_ASYNC_NAME_RESOLVER_H_
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