-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
- * Reserved. This file contains Original Code and/or Modifications of
- * Original Code as defined in and that are subject to the Apple Public
- * Source License Version 1.0 (the 'License'). You may not use this file
- * except in compliance with the License. Please obtain a copy of the
- * License at http://www.apple.com/publicsource and read it before using
- * this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License."
- *
- * @APPLE_LICENSE_HEADER_END@
- */
/*
* Copyright (c) 1988, 1990, 1993
* The Regents of the University of California. All rights reserved.
* SUCH DAMAGE.
*/
+#include <sys/cdefs.h>
+
#ifndef lint
-static char copyright[] =
+static const char copyright[] =
"@(#) Copyright (c) 1988, 1990, 1993\n\
The Regents of the University of California. All rights reserved.\n";
-#endif /* not lint */
+#endif
+
+#ifndef lint
+static const char sccsid[] = "@(#)wall.c 8.2 (Berkeley) 11/16/93";
+#endif
/*
* This program is not related to David Wall, whose Stanford Ph.D. thesis
#include <sys/param.h>
#include <sys/stat.h>
-#include <sys/time.h>
#include <sys/uio.h>
+#include <ctype.h>
+#include <err.h>
+#include <grp.h>
+#include <locale.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
#include <unistd.h>
#include <utmp.h>
-void makemsg __P((char *));
+#include "ttymsg.h"
-#define IGNOREUSER "sleeper"
+static void makemsg(char *);
+static void usage(void);
+struct wallgroup {
+ struct wallgroup *next;
+ char *name;
+ gid_t gid;
+} *grouplist;
int nobanner;
int mbufsize;
char *mbuf;
-/* ARGSUSED */
int
-main(argc, argv)
- int argc;
- char **argv;
+main(int argc, char *argv[])
{
- extern int optind;
- int ch;
struct iovec iov;
struct utmp utmp;
+ int ch;
+ int ingroup;
FILE *fp;
- char *p, *ttymsg();
+ struct wallgroup *g;
+ struct group *grp;
+ char **np;
+ const char *p;
+ struct passwd *pw;
char line[sizeof(utmp.ut_line) + 1];
+ char username[sizeof(utmp.ut_name) + 1];
+
+ (void)setlocale(LC_CTYPE, "");
- while ((ch = getopt(argc, argv, "n")) != EOF)
+ while ((ch = getopt(argc, argv, "g:n")) != -1)
switch (ch) {
case 'n':
/* undoc option for shutdown: suppress banner */
if (geteuid() == 0)
nobanner = 1;
break;
+ case 'g':
+ g = (struct wallgroup *)malloc(sizeof *g);
+ g->next = grouplist;
+ g->name = optarg;
+ g->gid = -1;
+ grouplist = g;
+ break;
case '?':
default:
-usage:
- (void)fprintf(stderr, "usage: wall [file]\n");
- exit(1);
+ usage();
}
argc -= optind;
argv += optind;
if (argc > 1)
- goto usage;
+ usage();
+
+ for (g = grouplist; g; g = g->next) {
+ grp = getgrnam(g->name);
+ if (grp != NULL)
+ g->gid = grp->gr_gid;
+ else
+ warnx("%s: no such group", g->name);
+ }
makemsg(*argv);
- if (!(fp = fopen(_PATH_UTMP, "r"))) {
- (void)fprintf(stderr, "wall: cannot read %s.\n", _PATH_UTMP);
- exit(1);
- }
+ if (!(fp = fopen(_PATH_UTMP, "r")))
+ err(1, "cannot read %s", _PATH_UTMP);
iov.iov_base = mbuf;
iov.iov_len = mbufsize;
/* NOSTRICT */
while (fread((char *)&utmp, sizeof(utmp), 1, fp) == 1) {
- if (!utmp.ut_name[0] ||
- !strncmp(utmp.ut_name, IGNOREUSER, sizeof(utmp.ut_name)))
+ if (!utmp.ut_name[0])
continue;
+ if (grouplist) {
+ ingroup = 0;
+ strlcpy(username, utmp.ut_name, sizeof(utmp.ut_name));
+ pw = getpwnam(username);
+ if (!pw)
+ continue;
+ for (g = grouplist; g && ingroup == 0; g = g->next) {
+ if (g->gid == (gid_t)-1)
+ continue;
+ if (g->gid == pw->pw_gid)
+ ingroup = 1;
+ else if ((grp = getgrgid(g->gid)) != NULL) {
+ for (np = grp->gr_mem; *np; np++) {
+ if (strcmp(*np, username) == 0) {
+ ingroup = 1;
+ break;
+ }
+ }
+ }
+ }
+ if (ingroup == 0)
+ continue;
+ }
strncpy(line, utmp.ut_line, sizeof(utmp.ut_line));
line[sizeof(utmp.ut_line)] = '\0';
if ((p = ttymsg(&iov, 1, line, 60*5)) != NULL)
- (void)fprintf(stderr, "wall: %s\n", p);
+ warnx("%s", p);
}
exit(0);
}
+static void
+usage()
+{
+ (void)fprintf(stderr, "usage: wall [-g group] [file]\n");
+ exit(1);
+}
+
void
-makemsg(fname)
- char *fname;
+makemsg(char *fname)
{
- register int ch, cnt;
+ int cnt;
+ unsigned char ch;
struct tm *lt;
struct passwd *pw;
struct stat sbuf;
- time_t now, time();
+ time_t now;
FILE *fp;
int fd;
- char *p, *whom, hostname[MAXHOSTNAMELEN], lbuf[100], tmpname[15];
- char *getlogin(), *strcpy(), *ttyname();
-
- (void)strcpy(tmpname, _PATH_TMP);
- (void)strcat(tmpname, "/wall.XXXXXX");
- if (!(fd = mkstemp(tmpname)) || !(fp = fdopen(fd, "r+"))) {
- (void)fprintf(stderr, "wall: can't open temporary file.\n");
- exit(1);
- }
+ char *p, hostname[MAXHOSTNAMELEN], lbuf[256], tmpname[64];
+ const char *tty;
+ const char *whom;
+ gid_t egid;
+
+ (void)snprintf(tmpname, sizeof(tmpname), "%s/wall.XXXXXX", _PATH_TMP);
+ if ((fd = mkstemp(tmpname)) == -1 || !(fp = fdopen(fd, "r+")))
+ err(1, "can't open temporary file");
(void)unlink(tmpname);
if (!nobanner) {
+ tty = ttyname(STDERR_FILENO);
+ if (tty == NULL)
+ tty = "no tty";
+
if (!(whom = getlogin()))
whom = (pw = getpwuid(getuid())) ? pw->pw_name : "???";
(void)gethostname(hostname, sizeof(hostname));
* in column 80, but that can't be helped.
*/
(void)fprintf(fp, "\r%79s\r\n", " ");
- (void)sprintf(lbuf, "Broadcast Message from %s@%s",
+ (void)snprintf(lbuf, sizeof(lbuf),
+ "Broadcast Message from %s@%s",
whom, hostname);
(void)fprintf(fp, "%-79.79s\007\007\r\n", lbuf);
- (void)sprintf(lbuf, " (%s) at %d:%02d ...", ttyname(2),
- lt->tm_hour, lt->tm_min);
+ (void)snprintf(lbuf, sizeof(lbuf),
+ " (%s) at %d:%02d %s...", tty,
+ lt->tm_hour, lt->tm_min, lt->tm_zone);
(void)fprintf(fp, "%-79.79s\r\n", lbuf);
}
(void)fprintf(fp, "%79s\r\n", " ");
- if (fname && !(freopen(fname, "r", stdin))) {
- (void)fprintf(stderr, "wall: can't read %s.\n", fname);
- exit(1);
+ if (fname) {
+ egid = getegid();
+ setegid(getgid());
+ if (freopen(fname, "r", stdin) == NULL)
+ err(1, "can't read %s", fname);
+ setegid(egid);
}
while (fgets(lbuf, sizeof(lbuf), stdin))
for (cnt = 0, p = lbuf; (ch = *p) != '\0'; ++p, ++cnt) {
- if (cnt == 79 || ch == '\n') {
+ if (ch == '\r') {
+ cnt = 0;
+ } else if (cnt == 79 || ch == '\n') {
for (; cnt < 79; ++cnt)
putc(' ', fp);
putc('\r', fp);
putc('\n', fp);
cnt = 0;
- } else
+ }
+ if (((ch & 0x80) && ch < 0xA0) ||
+ /* disable upper controls */
+ (!isprint(ch) && !isspace(ch) &&
+ ch != '\a' && ch != '\b')
+ ) {
+ if (ch & 0x80) {
+ ch &= 0x7F;
+ putc('M', fp);
+ if (++cnt == 79) {
+ putc('\r', fp);
+ putc('\n', fp);
+ cnt = 0;
+ }
+ putc('-', fp);
+ if (++cnt == 79) {
+ putc('\r', fp);
+ putc('\n', fp);
+ cnt = 0;
+ }
+ }
+ if (iscntrl(ch)) {
+ ch ^= 040;
+ putc('^', fp);
+ if (++cnt == 79) {
+ putc('\r', fp);
+ putc('\n', fp);
+ cnt = 0;
+ }
+ }
+ putc(ch, fp);
+ } else {
putc(ch, fp);
+ }
}
(void)fprintf(fp, "%79s\r\n", " ");
rewind(fp);
- if (fstat(fd, &sbuf)) {
- (void)fprintf(stderr, "wall: can't stat temporary file.\n");
- exit(1);
- }
+ if (fstat(fd, &sbuf))
+ err(1, "can't stat temporary file");
mbufsize = sbuf.st_size;
- if (!(mbuf = malloc((u_int)mbufsize))) {
- (void)fprintf(stderr, "wall: out of memory.\n");
- exit(1);
- }
- if (fread(mbuf, sizeof(*mbuf), mbufsize, fp) != mbufsize) {
- (void)fprintf(stderr, "wall: can't read temporary file.\n");
- exit(1);
- }
+ if (!(mbuf = malloc((u_int)mbufsize)))
+ err(1, "out of memory");
+ if ((int)fread(mbuf, sizeof(*mbuf), mbufsize, fp) != mbufsize)
+ err(1, "can't read temporary file");
(void)close(fd);
}
projects / apple / network_cmds.git / blobdiff