2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1980, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
33 static const char copyright[] =
34 "@(#) Copyright (c) 1980, 1988, 1993\n\
35 The Regents of the University of California. All rights reserved.\n";
40 static char sccsid[] = "@(#)from.c 8.1 (Berkeley) 6/6/93";
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
46 #include <sys/types.h>
56 static int match(const char *, const char *);
57 static void usage(void);
60 main(int argc, char **argv)
64 int ch, count, newline;
67 #if MAXPATHLEN > BUFSIZ
75 while ((ch = getopt(argc, argv, "cf:s:")) != -1)
85 for (p = sender; *p; ++p)
97 (void)snprintf(buf, sizeof(buf), "%s/%s", _PATH_MAILDIR, *argv);
100 if (!(file = getenv("MAIL"))) {
101 if (!(pwd = getpwuid(getuid())))
102 errx(1, "no password file entry for you");
104 (void)snprintf(buf, sizeof(buf),
105 "%s/%s", _PATH_MAILDIR, file);
111 /* read from stdin */
112 if (strcmp(file, "-") == 0) {
115 else if ((mbox = fopen(file, "r")) == NULL) {
116 errx(1, "can't read %s", file);
118 for (newline = 1; fgets(buf, sizeof(buf), mbox);) {
123 if (newline && !strncmp(buf, "From ", 5) &&
124 (!sender || match(buf + 5, sender))) {
133 printf("There %s %d message%s in your incoming mailbox.\n",
134 count == 1 ? "is" : "are", count, count == 1 ? "" : "s");
142 fprintf(stderr, "usage: from [-c] [-f file] [-s sender] [user]\n");
147 match(const char *line, const char *sender)
152 for (first = *sender++;;) {
153 if (isspace(ch = *line))
159 for (p = sender, t = line;;) {