GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/talk/get_names.c Lines: 0 49 0.0 %
Date: 2016-12-06 Branches: 0 30 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: get_names.c,v 1.21 2016/02/01 07:29:25 mestre Exp $	*/
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/*	$NetBSD: get_names.c,v 1.4 1994/12/09 02:14:16 jtc Exp $	*/
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/*
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 * Copyright (c) 1983, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/socket.h>
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#include <err.h>
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#include <limits.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "talk.h"
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extern	CTL_MSG msg;
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/*
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 * Determine the local and remote user, tty, and machines
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 */
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void
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get_names(int argc, char *argv[])
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{
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	char hostname[HOST_NAME_MAX+1];
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	char *his_name, *my_name;
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	char *my_machine_name, *his_machine_name;
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	char *his_tty;
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	char *cp;
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	char *names;
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	if (argc > 1 && !strcmp(argv[1], "-H")) {
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		argv[1] = argv[0];
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		++argv;
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		--argc;
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		high_print = 1;
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	}
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	if (argc > 1 && !strcmp(argv[1], "-s")) {
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		argv[1] = argv[0];
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		++argv;
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		--argc;
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		smooth_scroll = TRUE;
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	}
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	if ((argc < 2 ) || ('@' == argv[1][0])) {
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		extern char *__progname;
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		fprintf(stderr, "usage: %s [-Hs] person [ttyname]\n", __progname);
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		exit(1);
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	}
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	if (!isatty(STDIN_FILENO))
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		errx(1, "standard input must be a tty, not a pipe or a file");
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	if ((my_name = getlogin()) == NULL) {
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		struct passwd *pw;
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		if ((pw = getpwuid(getuid())) == NULL)
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			errx(1, "you don't exist in the passwd file.");
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		my_name = pw->pw_name;
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	}
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	gethostname(hostname, sizeof (hostname));
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	my_machine_name = hostname;
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	/* check for, and strip out, the machine name of the target */
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	names = strdup(argv[1]);
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	if (names == NULL)
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		errx(1, "out of memory");
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	for (cp = names; *cp && !strchr("@:!.", *cp); cp++)
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		;
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	if (*cp == '\0') {
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		/* this is a local to local talk */
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		his_name = names;
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		his_machine_name = my_machine_name;
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	} else {
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		if (*cp++ == '@') {
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			/* user@host */
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			his_name = names;
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			his_machine_name = cp;
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		} else {
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			/* host.user or host!user or host:user */
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			his_name = cp;
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			his_machine_name = names;
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		}
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		*--cp = '\0';
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	}
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	if (argc > 2)
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		his_tty = argv[2];	/* tty name is arg 2 */
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	else
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		his_tty = "";
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	get_addrs(my_machine_name, his_machine_name);
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	/*
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	 * Initialize the message template.
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	 */
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	msg.vers = TALK_VERSION;
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	msg.addr.sa_family = htons(AF_INET);
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	msg.ctl_addr.sa_family = htons(AF_INET);
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	msg.id_num = htonl(0);
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	strncpy(msg.l_name, my_name, NAME_SIZE);
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	msg.l_name[NAME_SIZE - 1] = '\0';
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	strncpy(msg.r_name, his_name, NAME_SIZE);
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	msg.r_name[NAME_SIZE - 1] = '\0';
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	strncpy(msg.r_tty, his_tty, TTY_SIZE);
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	msg.r_tty[TTY_SIZE - 1] = '\0';
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	free(names);
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}