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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	libexec/talkd/talkd.c	Lines:	0	47	0.0 %
Date:	2017-11-07	Branches:	0	24	0.0 %


/*	$OpenBSD: talkd.c,v 1.25 2016/02/05 10:13:51 mestre Exp $	*/

/*
 * Copyright (c) 1983 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.
 */

/*
 * The top level of the daemon, the format is heavily borrowed
 * from rwhod.c. Basically: find out who and where you are;
 * disconnect all descriptors and ttys, and then endless
 * loop on waiting for and processing requests
 */
#include <sys/socket.h>
#include <protocols/talkd.h>

#include <errno.h>
#include <limits.h>
#include <paths.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>

#include "talkd.h"

int	debug = 0;
void	timeout(int);
long	lastmsgtime;

char	hostname[HOST_NAME_MAX+1];

#define TIMEOUT 30
#define MAXIDLE 120

int
main(int argc, char *argv[])
{
	if (getuid() != 0) {
		fprintf(stderr, "%s: getuid: not super-user\n", argv[0]);
		exit(1);
	}
	openlog("talkd", LOG_PID, LOG_DAEMON);
	if (gethostname(hostname, sizeof(hostname)) < 0) {
		syslog(LOG_ERR, "gethostname: %m");
		_exit(1);
	}
	if (chdir(_PATH_DEV) < 0) {
		syslog(LOG_ERR, "chdir: %s: %m", _PATH_DEV);
		_exit(1);
	}
	if (argc > 1 && strcmp(argv[1], "-d") == 0)
		debug = 1;
	init_table();
	signal(SIGALRM, timeout);
	alarm(TIMEOUT);

	if (pledge("stdio rpath wpath cpath inet dns", NULL) == -1) {
		syslog(LOG_ERR, "pledge: %m");
		_exit(1);
	}

	for (;;) {
		CTL_RESPONSE response;
		socklen_t len = sizeof(response.addr);
		CTL_MSG	request;
		int cc;
		struct sockaddr ctl_addr;

		memset(&response, 0, sizeof(response));
		cc = recvfrom(STDIN_FILENO, (char *)&request,
		    sizeof(request), 0, (struct sockaddr *)&response.addr,
		    &len);
		if (cc != sizeof(request)) {
			if (cc < 0 && errno != EINTR)
				syslog(LOG_WARNING, "recvfrom: %m");
			continue;
		}

		/* Force NUL termination */
		request.l_name[sizeof(request.l_name) - 1] = '\0';
		request.r_name[sizeof(request.r_name) - 1] = '\0';
		request.r_tty[sizeof(request.r_tty) - 1] = '\0';

		memcpy(&ctl_addr, &request.ctl_addr, sizeof(ctl_addr));
		ctl_addr.sa_family = ntohs(request.ctl_addr.sa_family);
		ctl_addr.sa_len = sizeof(ctl_addr);
		if (ctl_addr.sa_family != AF_INET)
			continue;

		lastmsgtime = time(0);
		process_request(&request, &response);
		/* can block here, is this what I want? */
		cc = sendto(STDOUT_FILENO, (char *)&response,
		    sizeof(response), 0, &ctl_addr, sizeof(ctl_addr));
		if (cc != sizeof(response))
			syslog(LOG_WARNING, "sendto: %m");
	}
}

void
timeout(int signo)
{
	int save_errno = errno;

	if (time(0) - lastmsgtime >= MAXIDLE)
		_exit(0);
	alarm(TIMEOUT);
	errno = save_errno;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: talkd.c,v 1.25 2016/02/05 10:13:51 mestre Exp $ */
2
3			/*
4			* Copyright (c) 1983 Regents of the University of California.
5			* All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			* 3. Neither the name of the University nor the names of its contributors
16			* may be used to endorse or promote products derived from this software
17			* without specific prior written permission.
18			*
19			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29			* SUCH DAMAGE.
30			*/
31
32			/*
33			* The top level of the daemon, the format is heavily borrowed
34			* from rwhod.c. Basically: find out who and where you are;
35			* disconnect all descriptors and ttys, and then endless
36			* loop on waiting for and processing requests
37			*/
38			#include <sys/socket.h>
39			#include <protocols/talkd.h>
40
41			#include <errno.h>
42			#include <limits.h>
43			#include <paths.h>
44			#include <signal.h>
45			#include <stdio.h>
46			#include <stdlib.h>
47			#include <string.h>
48			#include <syslog.h>
49			#include <unistd.h>
50
51			#include "talkd.h"
52
53			int debug = 0;
54			void timeout(int);
55			long lastmsgtime;
56
57			char hostname[HOST_NAME_MAX+1];
58
59			#define TIMEOUT 30
60			#define MAXIDLE 120
61
62			int
63			main(int argc, char *argv[])
64			{
65			if (getuid() != 0) {
66			fprintf(stderr, "%s: getuid: not super-user\n", argv[0]);
67			exit(1);
68			}
69			openlog("talkd", LOG_PID, LOG_DAEMON);
70			if (gethostname(hostname, sizeof(hostname)) < 0) {
71			syslog(LOG_ERR, "gethostname: %m");
72			_exit(1);
73			}
74			if (chdir(_PATH_DEV) < 0) {
75			syslog(LOG_ERR, "chdir: %s: %m", _PATH_DEV);
76			_exit(1);
77			}
78			if (argc > 1 && strcmp(argv[1], "-d") == 0)
79			debug = 1;
80			init_table();
81			signal(SIGALRM, timeout);
82			alarm(TIMEOUT);
83
84			if (pledge("stdio rpath wpath cpath inet dns", NULL) == -1) {
85			syslog(LOG_ERR, "pledge: %m");
86			_exit(1);
87			}
88
89			for (;;) {
90			CTL_RESPONSE response;
91			socklen_t len = sizeof(response.addr);
92			CTL_MSG request;
93			int cc;
94			struct sockaddr ctl_addr;
95
96			memset(&response, 0, sizeof(response));
97			cc = recvfrom(STDIN_FILENO, (char *)&request,
98			sizeof(request), 0, (struct sockaddr *)&response.addr,
99			&len);
100			if (cc != sizeof(request)) {
101			if (cc < 0 && errno != EINTR)
102			syslog(LOG_WARNING, "recvfrom: %m");
103			continue;
104			}
105
106			/* Force NUL termination */
107			request.l_name[sizeof(request.l_name) - 1] = '\0';
108			request.r_name[sizeof(request.r_name) - 1] = '\0';
109			request.r_tty[sizeof(request.r_tty) - 1] = '\0';
110
111			memcpy(&ctl_addr, &request.ctl_addr, sizeof(ctl_addr));
112			ctl_addr.sa_family = ntohs(request.ctl_addr.sa_family);
113			ctl_addr.sa_len = sizeof(ctl_addr);
114			if (ctl_addr.sa_family != AF_INET)
115			continue;
116
117			lastmsgtime = time(0);
118			process_request(&request, &response);
119			/* can block here, is this what I want? */
120			cc = sendto(STDOUT_FILENO, (char *)&response,
121			sizeof(response), 0, &ctl_addr, sizeof(ctl_addr));
122			if (cc != sizeof(response))
123			syslog(LOG_WARNING, "sendto: %m");
124			}
125			}
126
127			void
128			timeout(int signo)
129			{
130			int save_errno = errno;
131
132			if (time(0) - lastmsgtime >= MAXIDLE)
133			_exit(0);
134			alarm(TIMEOUT);
135			errno = save_errno;
136			}