70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
/* $OpenBSD: get_addrs.c,v 1.10 2016/02/01 07:29:25 mestre Exp $ */
|
|
/* $NetBSD: get_addrs.c,v 1.3 1994/12/09 02:14:14 jtc Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1983, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <err.h>
|
|
#include <netdb.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "talk.h"
|
|
#include "talk_ctl.h"
|
|
|
|
void
|
|
get_addrs(char *my_machine_name, char *his_machine_name)
|
|
{
|
|
struct hostent *hp;
|
|
struct servent *sp;
|
|
|
|
msg.pid = htonl(getpid());
|
|
/* look up the address of the local host */
|
|
hp = gethostbyname(my_machine_name);
|
|
if (hp == NULL)
|
|
errx(1, "%s: %s", my_machine_name, hstrerror(h_errno));
|
|
bcopy(hp->h_addr, &my_machine_addr, hp->h_length);
|
|
/*
|
|
* If the callee is on-machine, just copy the
|
|
* network address, otherwise do a lookup...
|
|
*/
|
|
if (strcmp(his_machine_name, my_machine_name)) {
|
|
hp = gethostbyname(his_machine_name);
|
|
if (hp == NULL)
|
|
errx(1, "%s: %s", his_machine_name, hstrerror(h_errno));
|
|
bcopy(hp->h_addr, &his_machine_addr, hp->h_length);
|
|
} else
|
|
his_machine_addr = my_machine_addr;
|
|
/* find the server's port */
|
|
sp = getservbyname("ntalk", "udp");
|
|
if (sp == NULL)
|
|
errx(1, "ntalk/udp: service is not registered.");
|
|
daemon_port = sp->s_port;
|
|
}
|