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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/mailwrapper/mailwrapper.c	Lines:	0	55	0.0 %
Date:	2017-11-07	Branches:	0	34	0.0 %


/*	$OpenBSD: mailwrapper.c,v 1.23 2017/06/14 16:32:11 anton Exp $	*/
/*	$NetBSD: mailwrapper.c,v 1.2 1999/02/20 22:10:07 thorpej Exp $	*/

/*
 * Copyright (c) 1998
 * 	Perry E. Metzger.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgment:
 *	This product includes software developed for the NetBSD Project
 *	by Perry E. Metzger.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <syslog.h>
#include <unistd.h>
#include <util.h>

#define _PATH_MAILERCONF	"/etc/mailer.conf"
#define _PATH_DEFAULTMTA	"/usr/sbin/smtpctl"

struct arglist {
	size_t argc, maxc;
	char **argv;
};

static void initarg(struct arglist *);
static void addarg(struct arglist *, const char *);

extern const char *__progname;	/* from crt0.o */

static void
initarg(struct arglist *al)
{
	al->argc = 0;
	al->maxc = 10;
	if ((al->argv = calloc(al->maxc, sizeof(char *))) == NULL)
		err(1, "malloc");
}

static void
addarg(struct arglist *al, const char *arg)
{
	if (al->argc == al->maxc) {
		al->maxc <<= 1;
		al->argv = reallocarray(al->argv, al->maxc, sizeof(char *));
		if (al->argv == NULL)
			err(1, "realloc");
	}

	al->argv[al->argc++] = (char *)arg;
}

int
main(int argc, char *argv[])
{
	FILE *config;
	char *line, *cp, *from, *to, *ap;
	const char *progname;
	size_t len, lineno = 0;
	struct arglist al;

	if (pledge("stdio rpath exec flock cpath wpath", NULL) == -1)
		err(1, "pledge");

	/* change __progname to mailwrapper so we get sensible error messages */
	progname = __progname;
	__progname = "mailwrapper";

	initarg(&al);
	for (len = 0; len < argc; len++)
		addarg(&al, argv[len]);

	config = fopen(_PATH_MAILERCONF, "r");

	if (pledge("stdio exec flock rpath cpath wpath", NULL) == -1)
		err(1, "pledge");

	if (config == NULL) {
		addarg(&al, NULL);
		openlog(__progname, LOG_PID, LOG_MAIL);
		syslog(LOG_INFO, "cannot open %s, using %s as default MTA",
		    _PATH_MAILERCONF, _PATH_DEFAULTMTA);
		closelog();
		execv(_PATH_DEFAULTMTA, al.argv);
		err(1, "cannot exec %s", _PATH_DEFAULTMTA);
		/*NOTREACHED*/
	}

	for (;;) {
		if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL) {
			if (feof(config))
				errx(1, "no mapping in %s", _PATH_MAILERCONF);
			err(1, "fparseln");
		}

#define	WS	" \t\n"
		cp = line;

		cp += strspn(cp, WS);
		if (cp[0] == '\0') {
			/* empty line */
			free(line);
			continue;
		}

		if ((from = strsep(&cp, WS)) == NULL || cp == NULL)
			goto parse_error;

		cp += strspn(cp, WS);

		if ((to = strsep(&cp, WS)) == NULL)
			goto parse_error;

		if (strcmp(from, progname) == 0) {
			for (ap = strsep(&cp, WS); ap != NULL;
			    ap = strsep(&cp, WS))
				if (*ap)
					addarg(&al, ap);
			break;
		}

		free(line);
	}

	(void)fclose(config);

	addarg(&al, NULL);

	execv(to, al.argv);
	err(1, "cannot exec %s", to);
	/*NOTREACHED*/
parse_error:
	errx(1, "parse error in %s at line %lu",
	    _PATH_MAILERCONF, (u_long)lineno);
	/*NOTREACHED*/
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: mailwrapper.c,v 1.23 2017/06/14 16:32:11 anton Exp $ */
2			/* $NetBSD: mailwrapper.c,v 1.2 1999/02/20 22:10:07 thorpej Exp $ */
3
4			/*
5			* Copyright (c) 1998
6			* Perry E. Metzger. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. All advertising materials mentioning features or use of this software
17			* must display the following acknowledgment:
18			* This product includes software developed for the NetBSD Project
19			* by Perry E. Metzger.
20			* 4. The name of the author may not be used to endorse or promote products
21			* derived from this software without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33			*/
34
35			#include <err.h>
36			#include <stdio.h>
37			#include <string.h>
38			#include <stdlib.h>
39			#include <syslog.h>
40			#include <unistd.h>
41			#include <util.h>
42
43			#define _PATH_MAILERCONF "/etc/mailer.conf"
44			#define _PATH_DEFAULTMTA "/usr/sbin/smtpctl"
45
46			struct arglist {
47			size_t argc, maxc;
48			char **argv;
49			};
50
51			static void initarg(struct arglist *);
52			static void addarg(struct arglist , const char );
53
54			extern const char __progname; / from crt0.o */
55
56			static void
57			initarg(struct arglist *al)
58			{
59			al->argc = 0;
60			al->maxc = 10;
61			if ((al->argv = calloc(al->maxc, sizeof(char *))) == NULL)
62			err(1, "malloc");
63			}
64
65			static void
66			addarg(struct arglist al, const char arg)
67			{
68			if (al->argc == al->maxc) {
69			al->maxc <<= 1;
70			al->argv = reallocarray(al->argv, al->maxc, sizeof(char *));
71			if (al->argv == NULL)
72			err(1, "realloc");
73			}
74
75			al->argv[al->argc++] = (char *)arg;
76			}
77
78			int
79			main(int argc, char *argv[])
80			{
81			FILE *config;
82			char line, cp, from, to, *ap;
83			const char *progname;
84			size_t len, lineno = 0;
85			struct arglist al;
86
87			if (pledge("stdio rpath exec flock cpath wpath", NULL) == -1)
88			err(1, "pledge");
89
90			/* change __progname to mailwrapper so we get sensible error messages */
91			progname = __progname;
92			__progname = "mailwrapper";
93
94			initarg(&al);
95			for (len = 0; len < argc; len++)
96			addarg(&al, argv[len]);
97
98			config = fopen(_PATH_MAILERCONF, "r");
99
100			if (pledge("stdio exec flock rpath cpath wpath", NULL) == -1)
101			err(1, "pledge");
102
103			if (config == NULL) {
104			addarg(&al, NULL);
105			openlog(__progname, LOG_PID, LOG_MAIL);
106			syslog(LOG_INFO, "cannot open %s, using %s as default MTA",
107			_PATH_MAILERCONF, _PATH_DEFAULTMTA);
108			closelog();
109			execv(_PATH_DEFAULTMTA, al.argv);
110			err(1, "cannot exec %s", _PATH_DEFAULTMTA);
111			/NOTREACHED/
112			}
113
114			for (;;) {
115			if ((line = fparseln(config, &len, &lineno, NULL, 0)) == NULL) {
116			if (feof(config))
117			errx(1, "no mapping in %s", _PATH_MAILERCONF);
118			err(1, "fparseln");
119			}
120
121			#define WS " \t\n"
122			cp = line;
123
124			cp += strspn(cp, WS);
125			if (cp[0] == '\0') {
126			/* empty line */
127			free(line);
128			continue;
129			}
130
131			if ((from = strsep(&cp, WS)) == NULL \|\| cp == NULL)
132			goto parse_error;
133
134			cp += strspn(cp, WS);
135
136			if ((to = strsep(&cp, WS)) == NULL)
137			goto parse_error;
138
139			if (strcmp(from, progname) == 0) {
140			for (ap = strsep(&cp, WS); ap != NULL;
141			ap = strsep(&cp, WS))
142			if (*ap)
143			addarg(&al, ap);
144			break;
145			}
146
147			free(line);
148			}
149
150			(void)fclose(config);
151
152			addarg(&al, NULL);
153
154			execv(to, al.argv);
155			err(1, "cannot exec %s", to);
156			/NOTREACHED/
157			parse_error:
158			errx(1, "parse error in %s at line %lu",
159			_PATH_MAILERCONF, (u_long)lineno);
160			/NOTREACHED/
161			}