/* calalarmd.c - daemon for sending calendar alarms
*
* Copyright (c) 1994-2008 Carnegie Mellon University. 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. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/types.h>
#include <syslog.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <signal.h>
#include <fcntl.h>
#include "global.h"
#include "xmalloc.h"
#include "exitcodes.h"
#include "caldav_db.h"
#include "caldav_alarm.h"
extern int optind;
extern char *optarg;
static int debugmode = 0;
EXPORTED void fatal(const char *msg, int err)
{
if (debugmode) fprintf(stderr, "dying with %s %d\n", msg, err);
syslog(LOG_CRIT, "%s", msg);
syslog(LOG_NOTICE, "exiting");
cyrus_done();
exit(err);
}
static void shut_down(int ec) __attribute__((noreturn));
static void shut_down(int ec)
{
caldav_done();
annotatemore_close();
quotadb_close();
quotadb_done();
mboxlist_close();
mboxlist_done();
cyrus_done();
exit(ec);
}
int main(int argc, char **argv)
{
int opt;
pid_t pid;
char *alt_config = NULL;
time_t runattime = 0;
int upgrade = 0;
while ((opt = getopt(argc, argv, "C:dt:U")) != EOF) {
switch (opt) {
case 'C': /* alt config file */
alt_config = optarg;
break;
case 'd': /* don't fork. debugging mode */
debugmode = 1;
break;
case 't': /* run a single scan at this time */
runattime = atoi(optarg);
break;
case 'U':
upgrade = 1;
break;
default:
fprintf(stderr, "invalid argument\n");
exit(EC_USAGE);
break;
}
}
cyrus_init(alt_config, "calalarmd", 0, 0);
mboxlist_init(0);
mboxlist_open(NULL);
quotadb_init(0);
quotadb_open(NULL);
annotatemore_open();
caldav_init();
mboxevent_init();
if (upgrade) {
caldav_alarm_upgrade();
shut_down(0);
}
if (runattime) {
caldav_alarm_process(runattime);
shut_down(0);
}
signals_set_shutdown(shut_down);
signals_add_handlers(0);
/* fork unless we were given the -d option or we're running as a daemon */
if (debugmode == 0 && !getenv("CYRUS_ISDAEMON")) {
pid = fork();
if (pid == -1) {
perror("fork");
exit(1);
}
if (pid != 0) { /* parent */
exit(0);
}
}
/* child */
for (;;) {
struct timeval start, end;
double totaltime;
int tosleep;
signals_poll();
gettimeofday(&start, 0);
caldav_alarm_process(0);
gettimeofday(&end, 0);
signals_poll();
totaltime = timesub(&start, &end);
tosleep = 10 - (int) (totaltime + 0.5); /* round to nearest int */
if (tosleep > 0)
sleep(tosleep);
}
/* NOTREACHED */
shut_down(1);
}