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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 --> */
#include "NameResolver.h"
#ifdef ENABLE_ASYNC_DNS
#ifdef HAVE_LIBCARES1_5
void callback(void* arg, int status, int timeouts, struct hostent* host) {
#else
void callback(void* arg, int status, struct hostent* host) {
#endif // HAVE_LIBCARES1_5
NameResolver* resolverPtr = (NameResolver*)arg;
#ifdef HAVE_LIBARES
// This block is required since the assertion in ares_strerror fails
// if status = ARES_EDESTRUCTION is passed to ares_strerror as 1st argument.
// This does not happen in c-ares.
if(status == ARES_EDESTRUCTION) {
// we simply return in this case.
return;
}
#endif
if(status != ARES_SUCCESS) {
#ifdef HAVE_LIBCARES
resolverPtr->error = ares_strerror(status);
#else
resolverPtr->error = ares_strerror(status, 0);
#endif // HAVE_LIBCARES
resolverPtr->status = NameResolver::STATUS_ERROR;
return;
}
memcpy(&resolverPtr->addr, *host->h_addr_list, sizeof(struct in_addr));
resolverPtr->status = NameResolver::STATUS_SUCCESS;
}
#else // ENABLE_ASYNC_DNS
#include "DlAbortEx.h"
#include "message.h"
void NameResolver::resolve(const string& hostname)
{
memset(&_addr, 0, sizeof(in_addr));
struct addrinfo ai;
memset((char*)&ai, 0, sizeof(ai));
ai.ai_flags = 0;
ai.ai_family = PF_INET;
ai.ai_socktype = SOCK_STREAM;
ai.ai_protocol = 0;
struct addrinfo* res;
int ec;
if((ec = getaddrinfo(hostname.c_str(), 0, &ai, &res)) != 0) {
throw new DlAbortEx(EX_RESOLVE_HOSTNAME,
hostname.c_str(), gai_strerror(ec));
}
_addr = ((struct sockaddr_in*)res->ai_addr)->sin_addr;
freeaddrinfo(res);
}
#endif // ENABLE_ASYNC_DNS
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