adding zephyr-im master branch
This commit is contained in:
424
clients/zleave/zleave.c
Normal file
424
clients/zleave/zleave.c
Normal file
@ -0,0 +1,424 @@
|
||||
/* This file is part of the Project Athena Zephyr Notification System.
|
||||
* It contains code for the "zleave" command.
|
||||
*
|
||||
* Created by: David Jedlinsky
|
||||
*
|
||||
* $Id$
|
||||
*
|
||||
* Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
|
||||
* For copying and distribution information, see the file
|
||||
* "mit-copyright.h".
|
||||
*/
|
||||
|
||||
#include <sysdep.h>
|
||||
#include <zephyr/mit-copyright.h>
|
||||
#include <zephyr/zephyr.h>
|
||||
|
||||
#ifndef lint
|
||||
static const char rcsid_zlocate_c[] = "$Id$";
|
||||
#endif /* lint */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1980 Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms are permitted
|
||||
* provided that this notice is preserved and that due credit is given
|
||||
* to the University of California at Berkeley. The name of the University
|
||||
* may not be used to endorse or promote products derived from this
|
||||
* software without specific written prior permission. This software
|
||||
* is provided ``as is'' without express or implied warranty.
|
||||
*/
|
||||
|
||||
#ifndef lint
|
||||
char copyright[] =
|
||||
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
|
||||
All rights reserved.\n";
|
||||
#endif /* not lint */
|
||||
|
||||
#define MESSAGE_CLASS "MESSAGE"
|
||||
#define INSTANCE "LEAVE"
|
||||
/*
|
||||
* zleave [[+]hhmm [ -m "Reminder Message" ]]
|
||||
* or
|
||||
* zleave can[cel]
|
||||
*
|
||||
* Reminds you when you have to leave.
|
||||
* Leave prompts for input and goes away if you hit return.
|
||||
* Messages are sent through Zephyr. Subscriptions are handled automagically.
|
||||
* It nags you like a mother hen.
|
||||
*/
|
||||
char origlogin[20];
|
||||
char tempfile[40];
|
||||
char *whenleave;
|
||||
char *reminder_message = NULL;
|
||||
char buff[100];
|
||||
int use_zephyr=1, oldpid;
|
||||
|
||||
void usage(void);
|
||||
void doalarm(long);
|
||||
void bother(long, char *);
|
||||
void delay(long);
|
||||
int gethm(char *, int *, int*);
|
||||
|
||||
int
|
||||
main(int argc,
|
||||
char **argv)
|
||||
{
|
||||
time_t now;
|
||||
long when, diff;
|
||||
int hours, minutes;
|
||||
char *cp;
|
||||
FILE *fp;
|
||||
struct tm *nv;
|
||||
int port, c;
|
||||
ZSubscription_t sub;
|
||||
|
||||
if (ZInitialize() != ZERR_NONE) {
|
||||
fprintf(stderr,"No Zephyr! Will write directly to terminal.\n");
|
||||
use_zephyr = 0;
|
||||
}
|
||||
(void) sprintf(tempfile, "/tmp/zleave.%d", (int) getuid());
|
||||
|
||||
if (use_zephyr) {
|
||||
if ((port = ZGetWGPort()) == -1) {
|
||||
fprintf(stderr,
|
||||
"Can't find WindowGram subscription port.\n");
|
||||
fprintf(stderr,"Will write directly to terminal.\n");
|
||||
use_zephyr = 0;
|
||||
} else {
|
||||
sub.zsub_class = MESSAGE_CLASS;
|
||||
sub.zsub_classinst = INSTANCE;
|
||||
sub.zsub_recipient = ZGetSender();
|
||||
if (ZSubscribeToSansDefaults(&sub,1,(u_short)port)
|
||||
!= ZERR_NONE) {
|
||||
fprintf(stderr,
|
||||
"Subscription error! Writing to your terminal...\n");
|
||||
use_zephyr = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (!use_zephyr) {
|
||||
if ((cp = getlogin()) == NULL) {
|
||||
fputs("leave: You are not logged in.\n", stderr);
|
||||
exit(1);
|
||||
}
|
||||
(void) strcpy(origlogin, cp);
|
||||
}
|
||||
|
||||
c = 1;
|
||||
while ((c<argc) && (! reminder_message))
|
||||
if (!strcmp(argv[c++],"-m")) {
|
||||
if (argv[c])
|
||||
reminder_message = argv[c];
|
||||
else
|
||||
usage();
|
||||
}
|
||||
|
||||
if (!reminder_message)
|
||||
reminder_message = "";
|
||||
|
||||
if (argc < 2) {
|
||||
printf("When do you have to leave? ");
|
||||
(void) fflush(stdout);
|
||||
buff[read(0, buff, sizeof buff)] = 0;
|
||||
cp = buff;
|
||||
} else
|
||||
cp = argv[1];
|
||||
if (*cp == '\n')
|
||||
exit(0);
|
||||
if (*cp == '+') {
|
||||
cp++;
|
||||
if (!gethm(cp, &hours, &minutes))
|
||||
usage();
|
||||
if (minutes < 0 || minutes > 59)
|
||||
usage();
|
||||
diff = 60*hours+minutes;
|
||||
doalarm(diff);
|
||||
exit(0);
|
||||
}
|
||||
if (!strcmp(cp, "cancel") || !strcmp(cp, "can")) {
|
||||
if (!(fp = fopen(tempfile,"r"))) {
|
||||
printf("No zleave is currently running.\n");
|
||||
exit(0);
|
||||
}
|
||||
if (fscanf(fp, "%d", &oldpid) != 1) {
|
||||
printf("The zleave pid file is corrupted.\n");
|
||||
(void) fclose(fp);
|
||||
exit(0);
|
||||
}
|
||||
(void) fclose(fp);
|
||||
if (kill(oldpid,9))
|
||||
printf("No zleave is currently running.\n");
|
||||
(void) unlink(tempfile);
|
||||
exit(0);
|
||||
}
|
||||
if (!gethm(cp, &hours, &minutes))
|
||||
usage();
|
||||
if (hours > 12)
|
||||
hours -= 12;
|
||||
if (hours == 12)
|
||||
hours = 0;
|
||||
|
||||
if (hours < 0 || hours > 12 || minutes < 0 || minutes > 59)
|
||||
usage();
|
||||
|
||||
(void) time(&now);
|
||||
nv = localtime(&now);
|
||||
when = 60*hours+minutes;
|
||||
if (nv->tm_hour > 12)
|
||||
nv->tm_hour -= 12; /* do am/pm bit */
|
||||
now = 60 * nv->tm_hour + nv->tm_min;
|
||||
diff = when - now;
|
||||
while (diff < 0)
|
||||
diff += 12*60;
|
||||
if (diff > 11*60) {
|
||||
fprintf(stderr, "That time has already passed!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
doalarm(diff);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
void
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr, "usage: zleave [[+]hhmm [-m \"Reminder Message\"]]\n\
|
||||
\tor: zleave can[cel]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
int
|
||||
gethm(char *cp,
|
||||
int *hp,
|
||||
int *mp)
|
||||
{
|
||||
char c;
|
||||
int tod;
|
||||
|
||||
tod = 0;
|
||||
while ((c = *cp++) != '\0') {
|
||||
if (!isdigit(c))
|
||||
return(0);
|
||||
tod = tod * 10 + (c - '0');
|
||||
}
|
||||
*hp = tod / 100;
|
||||
*mp = tod % 100;
|
||||
return(1);
|
||||
}
|
||||
|
||||
void
|
||||
doalarm(long nmins)
|
||||
{
|
||||
time_t daytime;
|
||||
char *msg1, *msg2, *msg3, *msg4;
|
||||
register int i;
|
||||
long slp1, slp2, slp3, slp4;
|
||||
long seconds, gseconds;
|
||||
FILE *fp;
|
||||
#ifdef _POSIX_VERSION
|
||||
struct sigaction sa;
|
||||
#endif
|
||||
|
||||
seconds = 60 * nmins;
|
||||
if (seconds <= 0)
|
||||
seconds = 1;
|
||||
gseconds = seconds;
|
||||
|
||||
msg1 = "You have to leave in 5 minutes";
|
||||
if (seconds <= 60*5) {
|
||||
slp1 = 0;
|
||||
} else {
|
||||
slp1 = seconds - 60*5;
|
||||
seconds = 60*5;
|
||||
}
|
||||
|
||||
msg2 = "Just one more minute!";
|
||||
if (seconds <= 60) {
|
||||
slp2 = 0;
|
||||
} else {
|
||||
slp2 = seconds - 60;
|
||||
seconds = 60;
|
||||
}
|
||||
|
||||
msg3 = "Time to leave!";
|
||||
slp3 = seconds;
|
||||
|
||||
msg4 = "You're going to be late!";
|
||||
slp4 = 60L;
|
||||
|
||||
(void) time(&daytime);
|
||||
daytime += gseconds;
|
||||
whenleave = ctime(&daytime);
|
||||
|
||||
fp = fopen(tempfile,"r");
|
||||
if (fp) {
|
||||
if (fscanf(fp, "%d", &oldpid) == 1)
|
||||
if (!kill(oldpid,9))
|
||||
printf("Old zleave process killed.\n");
|
||||
(void) fclose(fp);
|
||||
}
|
||||
printf("Alarm set for %s", whenleave);
|
||||
|
||||
/* Subscribe to MESSAGE.LEAVE here */
|
||||
|
||||
switch(fork()) {
|
||||
case -1:
|
||||
perror("fork");
|
||||
exit(-1);
|
||||
break;
|
||||
case 0:
|
||||
break;
|
||||
default:
|
||||
exit(0);
|
||||
break;
|
||||
}
|
||||
if (!(fp = fopen(tempfile, "w")))
|
||||
fprintf(stderr, "Cannot open pid file.\n");
|
||||
else {
|
||||
fprintf(fp, "%d\n", getpid());
|
||||
if (fclose(fp) == EOF)
|
||||
(void) perror("fclose on pid file");
|
||||
}
|
||||
|
||||
#ifdef _POSIX_VERSION
|
||||
sigemptyset(&sa.sa_mask);
|
||||
sa.sa_flags = 0;
|
||||
sa.sa_handler = SIG_IGN;
|
||||
sigaction(SIGINT, &sa, (struct sigaction *)0);
|
||||
sigaction(SIGQUIT, &sa, (struct sigaction *)0);
|
||||
sigaction(SIGTERM, &sa, (struct sigaction *)0);
|
||||
sigaction(SIGTTOU, &sa, (struct sigaction *)0);
|
||||
#else
|
||||
(void) signal(SIGINT, SIG_IGN);
|
||||
(void) signal(SIGQUIT, SIG_IGN);
|
||||
(void) signal(SIGTERM, SIG_IGN);
|
||||
(void) signal(SIGTTOU, SIG_IGN);
|
||||
#endif
|
||||
|
||||
if (slp1)
|
||||
bother(slp1, msg1);
|
||||
if (slp2)
|
||||
bother(slp2, msg2);
|
||||
bother(slp3, msg3);
|
||||
for (i = 0; i < 10; i++)
|
||||
bother(slp4, msg4);
|
||||
|
||||
bother(0L, "That was the last time I'll tell you. Bye.");
|
||||
(void) unlink(tempfile);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
void
|
||||
bother(long slp,
|
||||
char *msg)
|
||||
{
|
||||
ZNotice_t notice;
|
||||
ZNotice_t retnotice;
|
||||
int retval;
|
||||
char *real_message;
|
||||
|
||||
delay(slp);
|
||||
|
||||
if (use_zephyr) {
|
||||
real_message = (char *) malloc(strlen(msg) +
|
||||
strlen(reminder_message) + 3);
|
||||
if (real_message == NULL) {
|
||||
fprintf (stderr, "zleave: out of memory\n");
|
||||
exit (1);
|
||||
}
|
||||
sprintf(real_message,"%c%s\n%s",'\0',msg,reminder_message);
|
||||
|
||||
(void) memset((char *)¬ice, 0, sizeof(notice));
|
||||
notice.z_kind = ACKED;
|
||||
notice.z_port = 0;
|
||||
notice.z_charset = ZCHARSET_UNKNOWN;
|
||||
notice.z_class = MESSAGE_CLASS;
|
||||
notice.z_class_inst = INSTANCE;
|
||||
notice.z_recipient = ZGetSender();
|
||||
notice.z_opcode = "";
|
||||
notice.z_sender = (char *) 0;
|
||||
notice.z_default_format = "\n$2";
|
||||
notice.z_message = real_message;
|
||||
/* +3: initial null, newline, final null */
|
||||
notice.z_message_len = strlen(msg)+strlen(reminder_message)+3;
|
||||
|
||||
if (ZSendNotice(¬ice, ZAUTH) != ZERR_NONE) {
|
||||
printf("\7\7\7%s\n%s", msg, reminder_message);
|
||||
use_zephyr = 0;
|
||||
} else
|
||||
if ((retval = ZIfNotice(&retnotice, (struct sockaddr_in *) 0,
|
||||
ZCompareUIDPred,
|
||||
(char *)¬ice.z_uid)) != ZERR_NONE) {
|
||||
fprintf(stderr,
|
||||
"zleave: %s while waiting for acknowledgement\n",
|
||||
error_message(retval));
|
||||
use_zephyr = 0;
|
||||
} else
|
||||
if (retnotice.z_kind == SERVNAK) {
|
||||
fprintf(stderr,
|
||||
"zleave: authorization failure while sending\n");
|
||||
use_zephyr = 0;
|
||||
} else
|
||||
if (retnotice.z_kind != SERVACK || !retnotice.z_message_len) {
|
||||
fprintf(stderr, "zleave: Detected server failure while receiving acknowledgement\n");
|
||||
use_zephyr = 0;
|
||||
} else
|
||||
if (strcmp(retnotice.z_message, ZSRVACK_SENT)) {
|
||||
/* it wasn't sent */
|
||||
exit(0);
|
||||
}
|
||||
if (!use_zephyr)
|
||||
exit(1);
|
||||
ZFreeNotice(&retnotice);
|
||||
free(real_message);
|
||||
} else
|
||||
#ifdef __STDC__
|
||||
printf("\a\a\a%s\n%s", msg, reminder_message);
|
||||
#else
|
||||
printf("\7\7\7%s\n%s", msg, reminder_message);
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* delay is like sleep but does it in 100 sec pieces and
|
||||
* knows what zero means.
|
||||
*/
|
||||
void
|
||||
delay(long secs)
|
||||
{
|
||||
long n;
|
||||
register char *l;
|
||||
|
||||
while (secs > 0) {
|
||||
n = 100;
|
||||
if (secs < n)
|
||||
n = secs;
|
||||
secs -= n;
|
||||
if (n > 0)
|
||||
sleep((unsigned) n);
|
||||
if (!use_zephyr) {
|
||||
l = getlogin();
|
||||
if (l == NULL)
|
||||
exit(0);
|
||||
if (strcmp(origlogin, l) != 0)
|
||||
exit(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef HAVE_GETLOGIN
|
||||
char *getlogin() {
|
||||
#include <utmp.h>
|
||||
|
||||
static struct utmp ubuf;
|
||||
int ufd;
|
||||
|
||||
ufd = open("/etc/utmp",0);
|
||||
seek(ufd, ttyn(0)*sizeof(ubuf), 0);
|
||||
read(ufd, &ubuf, sizeof(ubuf));
|
||||
ubuf.ut_name[sizeof(ubuf.ut_name)] = 0;
|
||||
return(&ubuf.ut_name);
|
||||
}
|
||||
#endif
|
||||
Reference in New Issue
Block a user