Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/from/from.c	Lines:	0	60	0.0 %
Date:	2017-11-13	Branches:	0	65	0.0 %


/*	$OpenBSD: from.c,v 1.25 2017/05/31 19:41:30 millert Exp $	*/
/*	$NetBSD: from.c,v 1.6 1995/09/01 01:39:10 jtc Exp $	*/

/*
 * Copyright (c) 1980, 1988, 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 <sys/types.h>
#include <ctype.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <paths.h>
#include <string.h>
#include <err.h>
#include <errno.h>

int	match(char *, char *);
char	*mail_spool(char *file, const char *user);

int
main(int argc, char *argv[])
{
	int ch, newline, fflag = 0;
	char *file, *line, *sender, *p;
	size_t linesize = 0;
	ssize_t linelen;
	FILE *fp;

	file = line = sender = NULL;
	while ((ch = getopt(argc, argv, "f:s:")) != -1) {
		switch(ch) {
		case 'f':
			fflag = 1;
			file = optarg;
			break;
		case 's':
			sender = optarg;
			for (p = sender; *p; ++p)
				if (isupper((unsigned char)*p))
					*p = tolower((unsigned char)*p);
			break;
		default:
			fprintf(stderr,
			    "usage: from [-f file] [-s sender] [user]\n");
			exit(EXIT_FAILURE);
		}
	}
	argv += optind;

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

	file = mail_spool(file, *argv);
	if ((fp = fopen(file, "r")) == NULL) {
		if (!fflag && errno == ENOENT)
			exit(EXIT_SUCCESS);
		err(1, "%s", file);
	}

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

	for (newline = 1; (linelen = getline(&line, &linesize, fp)) != -1;) {
		if (*line == '\n') {
			newline = 1;
			continue;
		}
		if (newline && !strncmp(line, "From ", 5) &&
		    (!sender || match(line + 5, sender)))
			printf("%s", line);
		newline = 0;
	}
	free(line);
	if (ferror(fp))
		err(EXIT_FAILURE, "getline");
	fclose(fp);
	exit(EXIT_SUCCESS);
}

char *
mail_spool(char *file, const char *user)
{
	struct passwd *pwd;

	/*
	 * We find the mailbox by:
	 *	1 -f flag
	 *	2 _PATH_MAILDIR/user (from argv)
	 *	2 MAIL environment variable
	 *	3 _PATH_MAILDIR/user (from environment or passwd db)
	 */
	if (file == NULL) {
		if (user == NULL) {
			if ((file = getenv("MAIL")) == NULL) {
				if ((user = getenv("LOGNAME")) == NULL &&
				    (user = getenv("USER")) == NULL) {
					if (!(pwd = getpwuid(getuid())))
						errx(1, "no password file "
						    "entry for you");
					user = pwd->pw_name;
				}
			}
		}
		if (file == NULL) {
			if (asprintf(&file, "%s/%s", _PATH_MAILDIR, user) == -1)
				err(1, NULL);
		}
	}
	return(file);
}

int
match(char *line, char *sender)
{
	char ch, pch, first, *p, *t;

	for (first = *sender++;;) {
		if (isspace((unsigned char)(ch = *line)))
			return(0);
		++line;
		if (isupper((unsigned char)ch))
			ch = tolower((unsigned char)ch);
		if (ch != first)
			continue;
		for (p = sender, t = line;;) {
			if (!(pch = *p++))
				return(1);
			if (isupper((unsigned char)(ch = *t++)))
				ch = tolower((unsigned char)ch);
			if (ch != pch)
				break;
		}
	}
	/* NOTREACHED */
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: from.c,v 1.25 2017/05/31 19:41:30 millert Exp $ */
2			/* $NetBSD: from.c,v 1.6 1995/09/01 01:39:10 jtc Exp $ */
3
4			/*
5			* Copyright (c) 1980, 1988, 1993
6			* The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include <sys/types.h>
34			#include <ctype.h>
35			#include <pwd.h>
36			#include <stdio.h>
37			#include <stdlib.h>
38			#include <unistd.h>
39			#include <paths.h>
40			#include <string.h>
41			#include <err.h>
42			#include <errno.h>
43
44			int match(char , char );
45			char mail_spool(char file, const char *user);
46
47			int
48			main(int argc, char *argv[])
49			{
50			int ch, newline, fflag = 0;
51			char file, line, sender, p;
52			size_t linesize = 0;
53			ssize_t linelen;
54			FILE *fp;
55
56			file = line = sender = NULL;
57			while ((ch = getopt(argc, argv, "f:s:")) != -1) {
58			switch(ch) {
59			case 'f':
60			fflag = 1;
61			file = optarg;
62			break;
63			case 's':
64			sender = optarg;
65			for (p = sender; *p; ++p)
66			if (isupper((unsigned char)*p))
67			p = tolower((unsigned char)p);
68			break;
69			default:
70			fprintf(stderr,
71			"usage: from [-f file] [-s sender] [user]\n");
72			exit(EXIT_FAILURE);
73			}
74			}
75			argv += optind;
76
77			if (pledge("stdio rpath getpw flock cpath wpath", NULL) == -1)
78			err(1, "pledge");
79
80			file = mail_spool(file, *argv);
81			if ((fp = fopen(file, "r")) == NULL) {
82			if (!fflag && errno == ENOENT)
83			exit(EXIT_SUCCESS);
84			err(1, "%s", file);
85			}
86
87			if (pledge("stdio flock rpath cpath wpath", NULL) == -1)
88			err(1, "pledge");
89
90			for (newline = 1; (linelen = getline(&line, &linesize, fp)) != -1;) {
91			if (*line == '\n') {
92			newline = 1;
93			continue;
94			}
95			if (newline && !strncmp(line, "From ", 5) &&
96			(!sender \|\| match(line + 5, sender)))
97			printf("%s", line);
98			newline = 0;
99			}
100			free(line);
101			if (ferror(fp))
102			err(EXIT_FAILURE, "getline");
103			fclose(fp);
104			exit(EXIT_SUCCESS);
105			}
106
107			char *
108			mail_spool(char file, const char user)
109			{
110			struct passwd *pwd;
111
112			/*
113			* We find the mailbox by:
114			* 1 -f flag
115			* 2 _PATH_MAILDIR/user (from argv)
116			* 2 MAIL environment variable
117			* 3 _PATH_MAILDIR/user (from environment or passwd db)
118			*/
119			if (file == NULL) {
120			if (user == NULL) {
121			if ((file = getenv("MAIL")) == NULL) {
122			if ((user = getenv("LOGNAME")) == NULL &&
123			(user = getenv("USER")) == NULL) {
124			if (!(pwd = getpwuid(getuid())))
125			errx(1, "no password file "
126			"entry for you");
127			user = pwd->pw_name;
128			}
129			}
130			}
131			if (file == NULL) {
132			if (asprintf(&file, "%s/%s", _PATH_MAILDIR, user) == -1)
133			err(1, NULL);
134			}
135			}
136			return(file);
137			}
138
139			int
140			match(char line, char sender)
141			{
142			char ch, pch, first, p, t;
143
144			for (first = *sender++;;) {
145			if (isspace((unsigned char)(ch = *line)))
146			return(0);
147			++line;
148			if (isupper((unsigned char)ch))
149			ch = tolower((unsigned char)ch);
150			if (ch != first)
151			continue;
152			for (p = sender, t = line;;) {
153			if (!(pch = *p++))
154			return(1);
155			if (isupper((unsigned char)(ch = *t++)))
156			ch = tolower((unsigned char)ch);
157			if (ch != pch)
158			break;
159			}
160			}
161			/* NOTREACHED */
162			}