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/* $Id: tcpconnect.C,v 1.4 2000/06/02 01:38:36 dm Exp $ */
/*
*
* Copyright (C) 1998 David Mazieres (dm@uun.org)
*
* 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, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include "async.h"
#include "dns.h"
static void
tcpconnect_addr_cb (int fd, cbi cb)
{
fdcb (fd, selwrite, NULL);
sockaddr_in sin;
socklen_t sn = sizeof (sin);
if (!getpeername (fd, (sockaddr *) &sin, &sn)) {
(*cb) (fd);
return;
}
int err = 0;
sn = sizeof (err);
getsockopt (fd, SOL_SOCKET, SO_ERROR, (char *) &err, &sn);
close (fd);
errno = err ? err : ECONNREFUSED;
(*cb) (-1);
}
void
tcpconnect (in_addr addr, u_int16_t port, cbi cb)
{
sockaddr_in sin;
bzero (&sin, sizeof (sin));
sin.sin_family = AF_INET;
sin.sin_port = htons (port);
sin.sin_addr = addr;
int fd = inetsocket (SOCK_STREAM);
if (fd < 0) {
(*cb) (-1);
return;
}
make_async (fd);
close_on_exec (fd);
if (connect (fd, (sockaddr *) &sin, sizeof (sin)) < 0
&& errno != EINPROGRESS) {
close (fd);
(*cb) (-1);
return;
}
fdcb (fd, selwrite, wrap (tcpconnect_addr_cb, fd, cb));
}
static void
tcpconnect_name_cb (u_int16_t port, str *namep,
cbi cb, ptr<hostent> h, int err)
{
if (!h) {
errno = ENOENT;
(*cb) (-1);
return;
}
if (namep)
*namep = h->h_name;
tcpconnect (*(in_addr *) h->h_addr, port, cb);
}
void
tcpconnect (str hostname, u_int16_t port, cbi cb, bool dnssearch,
str *namep)
{
dns_hostbyname (hostname, wrap (tcpconnect_name_cb, port, namep, cb),
dnssearch);
}
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