mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
f4ac32def2
Add some constness to avoid some warnings. Remove use register keyword. Deal with missing/unneeded extern/prototypes. Some minor type changes/casts to avoid warnings. Reviewed by: md5
174 lines
4.4 KiB
C
174 lines
4.4 KiB
C
/*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1988, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)from.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
#endif /* not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <paths.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
int match(const char *, const char *);
|
|
static void usage(void);
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
FILE *mbox;
|
|
struct passwd *pwd;
|
|
int ch, count, newline;
|
|
const char *file;
|
|
char *sender, *p;
|
|
#if MAXPATHLEN > BUFSIZ
|
|
char buf[MAXPATHLEN];
|
|
#else
|
|
char buf[BUFSIZ];
|
|
#endif
|
|
|
|
file = sender = NULL;
|
|
count = -1;
|
|
while ((ch = getopt(argc, argv, "cf:s:")) != -1)
|
|
switch (ch) {
|
|
case 'c':
|
|
count = 0;
|
|
break;
|
|
case 'f':
|
|
file = optarg;
|
|
break;
|
|
case 's':
|
|
sender = optarg;
|
|
for (p = sender; *p; ++p)
|
|
if (isupper(*p))
|
|
*p = tolower(*p);
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (file == NULL) {
|
|
if (argc) {
|
|
(void)snprintf(buf, sizeof(buf), "%s/%s", _PATH_MAILDIR, *argv);
|
|
file = buf;
|
|
} else {
|
|
if (!(file = getenv("MAIL"))) {
|
|
if (!(pwd = getpwuid(getuid())))
|
|
errx(1, "no password file entry for you");
|
|
file = pwd->pw_name;
|
|
(void)snprintf(buf, sizeof(buf),
|
|
"%s/%s", _PATH_MAILDIR, file);
|
|
file = buf;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* read from stdin */
|
|
if (strcmp(file, "-") == 0) {
|
|
mbox = stdin;
|
|
}
|
|
else if ((mbox = fopen(file, "r")) == NULL) {
|
|
errx(1, "can't read %s", file);
|
|
}
|
|
for (newline = 1; fgets(buf, sizeof(buf), mbox);) {
|
|
if (*buf == '\n') {
|
|
newline = 1;
|
|
continue;
|
|
}
|
|
if (newline && !strncmp(buf, "From ", 5) &&
|
|
(!sender || match(buf + 5, sender))) {
|
|
if (count != -1)
|
|
count++;
|
|
else
|
|
printf("%s", buf);
|
|
}
|
|
newline = 0;
|
|
}
|
|
if (count != -1)
|
|
printf("There %s %d message%s in your incoming mailbox.\n",
|
|
count == 1 ? "is" : "are", count, count == 1 ? "" : "s");
|
|
fclose(mbox);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: from [-c] [-f file] [-s sender] [user]\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
match(const char *line, const char *sender)
|
|
{
|
|
char ch, pch, first;
|
|
const char *p, *t;
|
|
|
|
for (first = *sender++;;) {
|
|
if (isspace(ch = *line))
|
|
return(0);
|
|
++line;
|
|
if (isupper(ch))
|
|
ch = tolower(ch);
|
|
if (ch != first)
|
|
continue;
|
|
for (p = sender, t = line;;) {
|
|
if (!(pch = *p++))
|
|
return(1);
|
|
if (isupper(ch = *t++))
|
|
ch = tolower(ch);
|
|
if (ch != pch)
|
|
break;
|
|
}
|
|
}
|
|
/* NOTREACHED */
|
|
}
|