2 * Copyright (c) 1980, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1980, 1988, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)from.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/from/from.c,v 1.8.2.1 2000/10/06 08:19:19 ru Exp $
32 * $DragonFly: src/usr.bin/from/from.c,v 1.5 2005/04/22 15:36:39 liamfoy Exp $
35 #include <sys/types.h>
46 static int match(char *, char *);
47 static void usage(void);
50 main(int argc, char **argv)
53 int ch, count, newline;
56 #if MAXPATHLEN > BUFSIZ
64 while ((ch = getopt(argc, argv, "cf:s:")) != -1)
74 for (p = sender; *p; ++p)
85 snprintf(buf, sizeof(buf), "%s/%s", _PATH_MAILDIR, *argv);
88 if ((file = getenv("MAIL")) == NULL) {
89 if (!(pwd = getpwuid(getuid())))
90 errx(1, "no password file entry for you");
92 snprintf(buf, sizeof(buf),
93 "%s/%s", _PATH_MAILDIR, file);
100 if (strcmp(file, "-") == 0) {
102 else if (freopen(file, "r", stdin) == NULL) {
103 err(1, "can't read %s", file);
105 for (newline = 1; fgets(buf, sizeof(buf), stdin);) {
110 if (newline && !strncmp(buf, "From ", 5) &&
111 (!sender || match(buf + 5, sender))) {
120 printf("There %s %d message%s in your incoming mailbox.\n",
121 count == 1 ? "is" : "are", count, count == 1 ? "" : "s");
128 fprintf(stderr, "usage: from [-c] [-f file] [-s sender] [user]\n");
133 match(char *line, char *sender)
135 char ch, pch, first, *p, *t;
137 for (first = *sender++;;) {
138 if (isspace(ch = *line))
144 for (p = sender, t = line;;) {