aboutsummaryrefslogblamecommitdiff
path: root/external/unbound/winrc/win_svc.c
blob: 57a160d6ae73098d985ec0edf1543fd28f9162eb (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620











































































































































































































































































































































































































































































































































































































































                                                                               
/*
 * winrc/win_svc.c - windows services API implementation for unbound
 *
 * Copyright (c) 2009, NLnet Labs. All rights reserved.
 *
 * This software is open source.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * 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.
 * 
 * Neither the name of the NLNET LABS 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 COPYRIGHT HOLDERS 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 COPYRIGHT
 * HOLDER 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.
 */

/**
 * \file
 *
 * This file contains functions to integrate with the windows services API.
 * This means it handles the commandline switches to install and remove
 * the service (via CreateService and DeleteService), it handles
 * the ServiceMain() main service entry point when started as a service,
 * and it handles the Handler[_ex]() to process requests to the service
 * (such as start and stop and status).
 */
#include "config.h"
#include "winrc/win_svc.h"
#include "winrc/w_inst.h"
#include "daemon/daemon.h"
#include "daemon/worker.h"
#include "daemon/remote.h"
#include "util/config_file.h"
#include "util/netevent.h"
#include "util/winsock_event.h"

/** global service status */
static SERVICE_STATUS	service_status;
/** global service status handle */
static SERVICE_STATUS_HANDLE service_status_handle;
/** global service stop event */
static WSAEVENT service_stop_event = NULL;
/** event struct for stop callbacks */
static struct event service_stop_ev;
/** if stop even means shutdown or restart */
static int service_stop_shutdown = 0;
/** config file to open. global communication to service_main() */
static char* service_cfgfile = CONFIGFILE;
/** commandline verbosity. global communication to service_main() */
static int service_cmdline_verbose = 0;
/** the cron callback */
static struct comm_timer* service_cron = NULL;
/** the cron thread */
static ub_thread_t cron_thread = NULL;
/** if cron has already done its quick check */
static int cron_was_quick = 0;

/**
 * Report current service status to service control manager
 * @param state: current state
 * @param exitcode: error code (when stopped)
 * @param wait: pending operation estimated time in milliseconds.
 */
static void report_status(DWORD state, DWORD exitcode, DWORD wait)
{
	static DWORD checkpoint = 1;
	service_status.dwCurrentState = state;
	service_status.dwWin32ExitCode = exitcode;
	service_status.dwWaitHint = wait;
	if(state == SERVICE_START_PENDING)
		service_status.dwControlsAccepted = 0;
	else 	service_status.dwControlsAccepted = SERVICE_ACCEPT_STOP;
	if(state == SERVICE_RUNNING || state == SERVICE_STOPPED)
		service_status.dwCheckPoint = 0;
	else	service_status.dwCheckPoint = checkpoint++;
	SetServiceStatus(service_status_handle, &service_status);
}

/**
 * Service control handler. Called by serviceControlManager when a control
 * code is sent to the service (with ControlService).
 * @param ctrl: control code
 */
static void 
hdlr(DWORD ctrl)
{
	if(ctrl == SERVICE_CONTROL_STOP) {
		report_status(SERVICE_STOP_PENDING, NO_ERROR, 0);
		service_stop_shutdown = 1;
		/* send signal to stop */
		if(!WSASetEvent(service_stop_event))
			log_err("Could not WSASetEvent: %s",
				wsa_strerror(WSAGetLastError()));
		return;
	} else {
		/* ctrl == SERVICE_CONTROL_INTERROGATE or whatever */
		/* update status */
		report_status(service_status.dwCurrentState, NO_ERROR, 0);
	}
}

/**
 * report event to system event log
 * For use during startup and shutdown.
 * @param str: the error
 */
static void
reportev(const char* str)
{
	char b[256];
	char e[256];
	HANDLE* s;
	LPCTSTR msg = b;
	/* print quickly to keep GetLastError value */
	wsvc_err2str(e, sizeof(e), str, GetLastError());
	snprintf(b, sizeof(b), "%s: %s", SERVICE_NAME, e);
	s = RegisterEventSource(NULL, SERVICE_NAME);
	if(!s) return;
	ReportEvent(s, /* event log */
		EVENTLOG_ERROR_TYPE, /* event type */
		0, /* event category */
		MSG_GENERIC_ERR, /* event ID (from gen_msg.mc) */
		NULL, /* user security context */
		1, /* numstrings */
		0, /* binary size */
		&msg, /* strings */
		NULL); /* binary data */
	DeregisterEventSource(s);
}

/**
 * Obtain registry string (if it exists).
 * @param key: key string
 * @param name: name of value to fetch.
 * @return malloced string with the result or NULL if it did not
 * exist on an error (logged) was encountered.
 */
static char*
lookup_reg_str(const char* key, const char* name)
{
	HKEY hk = NULL;
	DWORD type = 0;
	BYTE buf[1024];
	DWORD len = (DWORD)sizeof(buf);
	LONG ret;
	char* result = NULL;
	ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
	if(ret == ERROR_FILE_NOT_FOUND)
		return NULL; /* key does not exist */
	else if(ret != ERROR_SUCCESS) {
		reportev("RegOpenKeyEx failed");
		return NULL;
	}
	ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
	if(RegCloseKey(hk))
		reportev("RegCloseKey");
	if(ret == ERROR_FILE_NOT_FOUND)
		return NULL; /* name does not exist */
	else if(ret != ERROR_SUCCESS) {
		reportev("RegQueryValueEx failed");
		return NULL;
	}
	if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
		buf[sizeof(buf)-1] = 0;
		buf[sizeof(buf)-2] = 0; /* for multi_sz */
		result = strdup((char*)buf);
		if(!result) reportev("out of memory");
	}
	return result;
}

/**
 * Obtain registry integer (if it exists).
 * @param key: key string
 * @param name: name of value to fetch.
 * @return integer value (if it exists), or 0 on error.
 */
static int
lookup_reg_int(const char* key, const char* name)
{
	HKEY hk = NULL;
	DWORD type = 0;
	BYTE buf[1024];
	DWORD len = (DWORD)sizeof(buf);
	LONG ret;
	int result = 0;
	ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, key, 0, KEY_READ, &hk);
	if(ret == ERROR_FILE_NOT_FOUND)
		return 0; /* key does not exist */
	else if(ret != ERROR_SUCCESS) {
		reportev("RegOpenKeyEx failed");
		return 0;
	}
	ret = RegQueryValueEx(hk, (LPCTSTR)name, 0, &type, buf, &len);
	if(RegCloseKey(hk))
		reportev("RegCloseKey");
	if(ret == ERROR_FILE_NOT_FOUND)
		return 0; /* name does not exist */
	else if(ret != ERROR_SUCCESS) {
		reportev("RegQueryValueEx failed");
		return 0;
	}
	if(type == REG_SZ || type == REG_MULTI_SZ || type == REG_EXPAND_SZ) {
		buf[sizeof(buf)-1] = 0;
		buf[sizeof(buf)-2] = 0; /* for multi_sz */
		result = atoi((char*)buf);
	} else if(type == REG_DWORD) {
		DWORD r;
		memmove(&r, buf, sizeof(r));
		result = r;
	} 
	return result;
}

/** wait for unbound-anchor process to finish */
static void
waitforubanchor(PROCESS_INFORMATION* pinfo)
{
	/* we have 5 seconds scheduled for it, usually it will be very fast,
	 * with only a UDP message or two (100 msec or so), but the https
	 * connections could take some time */
	DWORD count = 7900;
	DWORD ret = WAIT_TIMEOUT;
	/* decrease timer every 1/10 second, we are still starting up */
	while(ret == WAIT_TIMEOUT) {
		ret = WaitForSingleObject(pinfo->hProcess, 100);
		if(count > 4000) count -= 100;
		else count--; /* go slow, it is taking long */
		if(count > 3000)
			report_status(SERVICE_START_PENDING, NO_ERROR, count);
	}
	verbose(VERB_ALGO, "unbound-anchor done");
	if(ret != WAIT_OBJECT_0) {
		return; /* did not end successfully */
	}
	if(!GetExitCodeProcess(pinfo->hProcess, &ret)) {
		log_err("GetExitCodeProcess failed");
		return;
	}
	verbose(VERB_ALGO, "unbound-anchor exit code is %d", (int)ret);
	if(ret != 0) {
		log_info("The root trust anchor has been updated.");
	}
}


/**
 * Perform root anchor update if so configured, by calling that process
 */
static void
call_root_update(void)
{
	char* rootanchor;
 	rootanchor = lookup_reg_str("Software\\Unbound", "RootAnchor");
	if(rootanchor && strlen(rootanchor)>0) {
		STARTUPINFO sinfo;
		PROCESS_INFORMATION pinfo;
		memset(&pinfo, 0, sizeof(pinfo));
		memset(&sinfo, 0, sizeof(sinfo));
		sinfo.cb = sizeof(sinfo);
		verbose(VERB_ALGO, "rootanchor: %s", rootanchor);
		report_status(SERVICE_START_PENDING, NO_ERROR, 8000);
		if(!CreateProcess(NULL, rootanchor, NULL, NULL, 0, 
			CREATE_NO_WINDOW, NULL, NULL, &sinfo, &pinfo))
			log_err("CreateProcess error for unbound-anchor.exe");
		else {
			waitforubanchor(&pinfo);
			CloseHandle(pinfo.hProcess);
			CloseHandle(pinfo.hThread);
		}
	}
	free(rootanchor);
}

/**
 * Init service. Keeps calling status pending to tell service control
 * manager that this process is not hanging.
 * @param r: restart, true on restart
 * @param d: daemon returned here.
 * @param c: config file returned here.
 * @return false if failed.
 */
static int
service_init(int r, struct daemon** d, struct config_file** c)
{
	struct config_file* cfg = NULL;
	struct daemon* daemon = NULL;

	if(!service_cfgfile) {
		char* newf = lookup_reg_str("Software\\Unbound", "ConfigFile");
		if(newf) service_cfgfile = newf;
		else 	service_cfgfile = strdup(CONFIGFILE);
		if(!service_cfgfile) fatal_exit("out of memory");
	}

	/* create daemon */
	if(r) 	daemon = *d;
	else 	daemon = daemon_init();
	if(!daemon) return 0;
	if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2800);

	/* read config */
	cfg = config_create();
	if(!cfg) return 0;
	if(!config_read(cfg, service_cfgfile, daemon->chroot)) {
		if(errno != ENOENT) {
			log_err("error in config file");
			return 0;
		}
		log_warn("could not open config file, using defaults");
	}
	if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2600);

	verbose(VERB_QUERY, "winservice - apply settings");
	/* apply settings and init */
	verbosity = cfg->verbosity + service_cmdline_verbose;
	if(cfg->directory && cfg->directory[0]) {
		if(chdir(cfg->directory)) {
			log_err("could not chdir to %s: %s", 
				cfg->directory, strerror(errno));
			if(errno != ENOENT)
				return 0;
			log_warn("could not change directory - continuing");
		} else
			verbose(VERB_QUERY, "chdir to %s", cfg->directory);
	}
	log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
	if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2400);
	verbose(VERB_QUERY, "winservice - apply cfg");
	daemon_apply_cfg(daemon, cfg);

	if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2300);
	if(!(daemon->rc = daemon_remote_create(cfg))) {
		log_err("could not set up remote-control");
		daemon_delete(daemon);
		config_delete(cfg);
		return 0;
	}

	/* open ports */
	/* keep reporting that we are busy starting */
	if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2200);
	verbose(VERB_QUERY, "winservice - open ports");
	if(!daemon_open_shared_ports(daemon)) return 0;
	verbose(VERB_QUERY, "winservice - ports opened");
	if(!r) report_status(SERVICE_START_PENDING, NO_ERROR, 2000);

	*d = daemon;
	*c = cfg;
	return 1;
}

/**
 * Deinit the service
 */
static void
service_deinit(struct daemon* daemon, struct config_file* cfg)
{
	daemon_cleanup(daemon);
	config_delete(cfg);
	daemon_delete(daemon);
}

#ifdef DOXYGEN
#define ATTR_UNUSED(x) x
#endif
/**
 * The main function for the service.
 * Called by the services API when starting unbound on windows in background.
 * Arguments could have been present in the string 'path'.
 * @param argc: nr args
 * @param argv: arg text.
 */
static void 
service_main(DWORD ATTR_UNUSED(argc), LPTSTR* ATTR_UNUSED(argv))
{
	struct config_file* cfg = NULL;
	struct daemon* daemon = NULL;

	service_status_handle = RegisterServiceCtrlHandler(SERVICE_NAME, 
		(LPHANDLER_FUNCTION)hdlr);
	if(!service_status_handle) {
		reportev("Could not RegisterServiceCtrlHandler");
		return;
	}
	
	service_status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
	service_status.dwServiceSpecificExitCode = 0;

	/* see if we have root anchor update enabled */
	call_root_update();

	/* we are now starting up */
	report_status(SERVICE_START_PENDING, NO_ERROR, 3000);
	if(!service_init(0, &daemon, &cfg)) {
		reportev("Could not service_init");
		report_status(SERVICE_STOPPED, NO_ERROR, 0);
		return;
	}

	/* event that gets signalled when we want to quit; it
	 * should get registered in the worker-0 waiting loop. */
	service_stop_event = WSACreateEvent();
	if(service_stop_event == WSA_INVALID_EVENT) {
		log_err("WSACreateEvent: %s", wsa_strerror(WSAGetLastError()));
		reportev("Could not WSACreateEvent");
		report_status(SERVICE_STOPPED, NO_ERROR, 0);
		return;
	}
	if(!WSAResetEvent(service_stop_event)) {
		log_err("WSAResetEvent: %s", wsa_strerror(WSAGetLastError()));
	}

	/* SetServiceStatus SERVICE_RUNNING;*/
	report_status(SERVICE_RUNNING, NO_ERROR, 0);
	verbose(VERB_QUERY, "winservice - init complete");

	/* daemon performs work */
	while(!service_stop_shutdown) {
		daemon_fork(daemon);
		if(!service_stop_shutdown) {
			daemon_cleanup(daemon);
			config_delete(cfg); cfg=NULL;
			if(!service_init(1, &daemon, &cfg)) {
				reportev("Could not service_init");
				report_status(SERVICE_STOPPED, NO_ERROR, 0);
				return;
			}
		}
	}

	/* exit */
	verbose(VERB_ALGO, "winservice - cleanup.");
	report_status(SERVICE_STOP_PENDING, NO_ERROR, 0);
	service_deinit(daemon, cfg);
	free(service_cfgfile);
	if(service_stop_event) (void)WSACloseEvent(service_stop_event);
	verbose(VERB_QUERY, "winservice - full stop");
	report_status(SERVICE_STOPPED, NO_ERROR, 0);
}

/** start the service */
static void 
service_start(const char* cfgfile, int v, int c)
{
	SERVICE_TABLE_ENTRY myservices[2] = {
		{SERVICE_NAME, (LPSERVICE_MAIN_FUNCTION)service_main},
		{NULL, NULL} };
	verbosity=v;
	if(verbosity >= VERB_QUERY) {
		/* log to file about start sequence */
		fclose(fopen("C:\\unbound.log", "w"));
		log_init("C:\\unbound.log", 0, 0);
		verbose(VERB_QUERY, "open logfile");
	} else log_init(0, 1, 0); /* otherwise, use Application log */
	if(c) {
		service_cfgfile = strdup(cfgfile);
		if(!service_cfgfile) fatal_exit("out of memory");
	} else 	service_cfgfile = NULL;
	service_cmdline_verbose = v;
	/* this call returns when service has stopped. */
	if(!StartServiceCtrlDispatcher(myservices)) {
		reportev("Could not StartServiceCtrlDispatcher");
	}
}

void
wsvc_command_option(const char* wopt, const char* cfgfile, int v, int c)
{
	if(strcmp(wopt, "install") == 0)
		wsvc_install(stdout, NULL);
	else if(strcmp(wopt, "remove") == 0)
		wsvc_remove(stdout);
	else if(strcmp(wopt, "service") == 0)
		service_start(cfgfile, v, c);
	else if(strcmp(wopt, "start") == 0)
		wsvc_rc_start(stdout);
	else if(strcmp(wopt, "stop") == 0)
		wsvc_rc_stop(stdout);
	else fatal_exit("unknown option: %s", wopt);
	exit(0);
}

void
worker_win_stop_cb(int ATTR_UNUSED(fd), short ATTR_UNUSED(ev), void* arg)
{
        struct worker* worker = (struct worker*)arg;
        verbose(VERB_QUERY, "caught stop signal (wsaevent)");
        worker->need_to_exit = 1;
        comm_base_exit(worker->base);
}

/** wait for cron process to finish */
static void
waitforit(PROCESS_INFORMATION* pinfo)
{
	DWORD ret = WaitForSingleObject(pinfo->hProcess, INFINITE);
	verbose(VERB_ALGO, "cronaction done");
	if(ret != WAIT_OBJECT_0) {
		return; /* did not end successfully */
	}
	if(!GetExitCodeProcess(pinfo->hProcess, &ret)) {
		log_err("GetExitCodeProcess failed");
		return;
	}
	verbose(VERB_ALGO, "exit code is %d", (int)ret);
	if(ret != 1) {
		if(!WSASetEvent(service_stop_event))
			log_err("Could not WSASetEvent: %s",
			wsa_strerror(WSAGetLastError()));
	}
}

/** Do the cron action and wait for result exit value */
static void*
win_do_cron(void* ATTR_UNUSED(arg))
{
	int mynum=65;
	char* cronaction;
	log_thread_set(&mynum);
 	cronaction = lookup_reg_str("Software\\Unbound", "CronAction");
	if(cronaction && strlen(cronaction)>0) {
		STARTUPINFO sinfo;
		PROCESS_INFORMATION pinfo;
		memset(&pinfo, 0, sizeof(pinfo));
		memset(&sinfo, 0, sizeof(sinfo));
		sinfo.cb = sizeof(sinfo);
		verbose(VERB_ALGO, "cronaction: %s", cronaction);
		if(!CreateProcess(NULL, cronaction, NULL, NULL, 0, 
			CREATE_NO_WINDOW, NULL, NULL, &sinfo, &pinfo))
			log_err("CreateProcess error");
		else {
			waitforit(&pinfo);
			CloseHandle(pinfo.hProcess);
			CloseHandle(pinfo.hThread);
		}
	}
	free(cronaction);
	/* stop self */
	CloseHandle(cron_thread);
	cron_thread = NULL;
	return NULL;
}

/** Set the timer for cron for the next wake up */
static void
set_cron_timer()
{
	struct timeval tv;
	int crontime;
	if(cron_was_quick == 0) {
		cron_was_quick = 1;
		crontime = 3600; /* first update some time after boot */
	} else {
		crontime = lookup_reg_int("Software\\Unbound", "CronTime");
		if(crontime == 0) crontime = 60*60*24; /* 24 hours */
	}
	memset(&tv, 0, sizeof(tv));
	tv.tv_sec = (time_t)crontime;
	comm_timer_set(service_cron, &tv);
}

void
wsvc_cron_cb(void* arg)
{
	struct worker* worker = (struct worker*)arg;
	/* perform cronned operation */
	verbose(VERB_ALGO, "cron timer callback");
	if(cron_thread == NULL) {
		/* create new thread to do it */
		ub_thread_create(&cron_thread, win_do_cron, worker);
	}
	/* reschedule */
	set_cron_timer();
}

void wsvc_setup_worker(struct worker* worker)
{
	/* if not started with -w service, do nothing */
	if(!service_stop_event)
		return;
	if(!winsock_register_wsaevent(comm_base_internal(worker->base),
		&service_stop_ev, service_stop_event,
		&worker_win_stop_cb, worker)) {
		fatal_exit("could not register wsaevent");
		return;
	}
	if(!service_cron) {
		service_cron = comm_timer_create(worker->base, 
			wsvc_cron_cb, worker);
		if(!service_cron)
			fatal_exit("could not create cron timer");
		set_cron_timer();
	}
}

void wsvc_desetup_worker(struct worker* ATTR_UNUSED(worker))
{
	comm_timer_delete(service_cron);
	service_cron = NULL;
}