1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifdef WIN32
18
19 #include "httpd.h"
20 #include "http_main.h"
21 #include "http_log.h"
22 #include "http_config.h" /* for read_config */
23 #include "http_core.h" /* for get_remote_host */
24 #include "http_connection.h"
25 #include "apr_portable.h"
26 #include "apr_thread_proc.h"
27 #include "apr_getopt.h"
28 #include "apr_strings.h"
29 #include "apr_lib.h"
30 #include "apr_shm.h"
31 #include "apr_thread_mutex.h"
32 #include "ap_mpm.h"
33 #include "apr_general.h"
34 #include "ap_config.h"
35 #include "ap_listen.h"
36 #include "mpm_default.h"
37 #include "mpm_winnt.h"
38 #include "mpm_common.h"
39 #include <malloc.h>
40 #include "apr_atomic.h"
41 #include "scoreboard.h"
42
43 #ifdef __WATCOMC__
44 #define _environ environ
45 #endif
46
47 #ifndef STACK_SIZE_PARAM_IS_A_RESERVATION /* missing on MinGW */
48 #define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000
49 #endif
50
51 /* Because ap_setup_listeners() is skipped in the child, any merging
52 * of [::]:80 and 0.0.0.0:80 for AP_ENABLE_V4_MAPPED in the parent
53 * won't have taken place in the child, so the child will expect to
54 * read two sockets for "Listen 80" but the parent will send only
55 * one.
56 */
57 #ifdef AP_ENABLE_V4_MAPPED
58 #error The WinNT MPM does not currently support AP_ENABLE_V4_MAPPED
59 #endif
60
61 /* scoreboard.c does the heavy lifting; all we do is create the child
62 * score by moving a handle down the pipe into the child's stdin.
63 */
64 extern apr_shm_t *ap_scoreboard_shm;
65
66 /* my_generation is returned to the scoreboard code */
67 static volatile ap_generation_t my_generation=0;
68
69 /* Definitions of WINNT MPM specific config globals */
70 static HANDLE shutdown_event; /* used to signal the parent to shutdown */
71 static HANDLE restart_event; /* used to signal the parent to restart */
72
73 static int one_process = 0;
74 static char const* signal_arg = NULL;
75
76 OSVERSIONINFO osver; /* VER_PLATFORM_WIN32_NT */
77
78 /* set by child_main to STACK_SIZE_PARAM_IS_A_RESERVATION for NT >= 5.1 (XP/2003) */
79 DWORD stack_res_flag;
80
81 static DWORD parent_pid;
82 DWORD my_pid;
83
84 /* used by parent to signal the child to start and exit */
85 apr_proc_mutex_t *start_mutex;
86 HANDLE exit_event;
87
88 int ap_threads_per_child = 0;
89 static int thread_limit = 0;
90 static int first_thread_limit = 0;
91 int winnt_mpm_state = AP_MPMQ_STARTING;
92
93 /* shared by service.c as global, although
94 * perhaps it should be private.
95 */
96 apr_pool_t *pconf;
97
98 /* Only one of these, the pipe from our parent, meant only for
99 * one child worker's consumption (not to be inherited!)
100 * XXX: decorate this name for the trunk branch, was left simplified
101 * only to make the 2.2 patch trivial to read.
102 */
103 static HANDLE pipe;
104
105 /*
106 * Command processors
107 */
108
set_threads_per_child(cmd_parms * cmd,void * dummy,const char * arg)109 static const char *set_threads_per_child (cmd_parms *cmd, void *dummy, const char *arg)
110 {
111 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
112 if (err != NULL) {
113 return err;
114 }
115
116 ap_threads_per_child = atoi(arg);
117 return NULL;
118 }
set_thread_limit(cmd_parms * cmd,void * dummy,const char * arg)119 static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg)
120 {
121 const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
122 if (err != NULL) {
123 return err;
124 }
125
126 thread_limit = atoi(arg);
127 return NULL;
128 }
129
130 static const command_rec winnt_cmds[] = {
131 LISTEN_COMMANDS,
132 AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
133 "Number of threads each child creates" ),
134 AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
135 "Maximum worker threads in a server for this run of Apache"),
136 { NULL }
137 };
138
winnt_note_child_started(int slot,pid_t pid)139 static void winnt_note_child_started(int slot, pid_t pid)
140 {
141 ap_scoreboard_image->parent[slot].pid = pid;
142 ap_run_child_status(ap_server_conf,
143 ap_scoreboard_image->parent[slot].pid,
144 my_generation, slot, MPM_CHILD_STARTED);
145 }
146
winnt_note_child_killed(int slot)147 static void winnt_note_child_killed(int slot)
148 {
149 ap_run_child_status(ap_server_conf,
150 ap_scoreboard_image->parent[slot].pid,
151 ap_scoreboard_image->parent[slot].generation,
152 slot, MPM_CHILD_EXITED);
153 ap_scoreboard_image->parent[slot].pid = 0;
154 }
155
156 /*
157 * Signalling Apache on NT.
158 *
159 * Under Unix, Apache can be told to shutdown or restart by sending various
160 * signals (HUP, USR, TERM). On NT we don't have easy access to signals, so
161 * we use "events" instead. The parent apache process goes into a loop
162 * where it waits forever for a set of events. Two of those events are
163 * called
164 *
165 * apPID_shutdown
166 * apPID_restart
167 *
168 * (where PID is the PID of the apache parent process). When one of these
169 * is signalled, the Apache parent performs the appropriate action. The events
170 * can become signalled through internal Apache methods (e.g. if the child
171 * finds a fatal error and needs to kill its parent), via the service
172 * control manager (the control thread will signal the shutdown event when
173 * requested to stop the Apache service), from the -k Apache command line,
174 * or from any external program which finds the Apache PID from the
175 * httpd.pid file.
176 *
177 * The signal_parent() function, below, is used to signal one of these events.
178 * It can be called by any child or parent process, since it does not
179 * rely on global variables.
180 *
181 * On entry, type gives the event to signal. 0 means shutdown, 1 means
182 * graceful restart.
183 */
184 /*
185 * Initialise the signal names, in the global variables signal_name_prefix,
186 * signal_restart_name and signal_shutdown_name.
187 */
188 #define MAX_SIGNAL_NAME 30 /* Long enough for apPID_shutdown, where PID is an int */
189 static char signal_name_prefix[MAX_SIGNAL_NAME];
190 static char signal_restart_name[MAX_SIGNAL_NAME];
191 static char signal_shutdown_name[MAX_SIGNAL_NAME];
setup_signal_names(char * prefix)192 static void setup_signal_names(char *prefix)
193 {
194 apr_snprintf(signal_name_prefix, sizeof(signal_name_prefix), prefix);
195 apr_snprintf(signal_shutdown_name, sizeof(signal_shutdown_name),
196 "%s_shutdown", signal_name_prefix);
197 apr_snprintf(signal_restart_name, sizeof(signal_restart_name),
198 "%s_restart", signal_name_prefix);
199 }
200
ap_signal_parent(ap_signal_parent_e type)201 AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type)
202 {
203 HANDLE e;
204 char *signal_name;
205
206 if (parent_pid == my_pid) {
207 switch(type) {
208 case SIGNAL_PARENT_SHUTDOWN:
209 {
210 SetEvent(shutdown_event);
211 break;
212 }
213 /* This MPM supports only graceful restarts right now */
214 case SIGNAL_PARENT_RESTART:
215 case SIGNAL_PARENT_RESTART_GRACEFUL:
216 {
217 SetEvent(restart_event);
218 break;
219 }
220 }
221 return;
222 }
223
224 switch(type) {
225 case SIGNAL_PARENT_SHUTDOWN:
226 {
227 signal_name = signal_shutdown_name;
228 break;
229 }
230 /* This MPM supports only graceful restarts right now */
231 case SIGNAL_PARENT_RESTART:
232 case SIGNAL_PARENT_RESTART_GRACEFUL:
233 {
234 signal_name = signal_restart_name;
235 break;
236 }
237 default:
238 return;
239 }
240
241 e = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_name);
242 if (!e) {
243 /* Um, problem, can't signal the parent, which means we can't
244 * signal ourselves to die. Ignore for now...
245 */
246 ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf, APLOGNO(00382)
247 "OpenEvent on %s event", signal_name);
248 return;
249 }
250 if (SetEvent(e) == 0) {
251 /* Same problem as above */
252 ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf, APLOGNO(00383)
253 "SetEvent on %s event", signal_name);
254 CloseHandle(e);
255 return;
256 }
257 CloseHandle(e);
258 }
259
260
261 /*
262 * Passed the following handles [in sync with send_handles_to_child()]
263 *
264 * ready event [signal the parent immediately, then close]
265 * exit event [save to poll later]
266 * start mutex [signal from the parent to begin accept()]
267 * scoreboard shm handle [to recreate the ap_scoreboard]
268 */
get_handles_from_parent(server_rec * s,HANDLE * child_exit_event,apr_proc_mutex_t ** child_start_mutex,apr_shm_t ** scoreboard_shm)269 static void get_handles_from_parent(server_rec *s, HANDLE *child_exit_event,
270 apr_proc_mutex_t **child_start_mutex,
271 apr_shm_t **scoreboard_shm)
272 {
273 HANDLE hScore;
274 HANDLE ready_event;
275 HANDLE os_start;
276 DWORD BytesRead;
277 void *sb_shared;
278 apr_status_t rv;
279
280 /* *** We now do this way back in winnt_rewrite_args
281 * pipe = GetStdHandle(STD_INPUT_HANDLE);
282 */
283 if (!ReadFile(pipe, &ready_event, sizeof(HANDLE),
284 &BytesRead, (LPOVERLAPPED) NULL)
285 || (BytesRead != sizeof(HANDLE))) {
286 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00384)
287 "Child: Unable to retrieve the ready event from the parent");
288 exit(APEXIT_CHILDINIT);
289 }
290
291 SetEvent(ready_event);
292 CloseHandle(ready_event);
293
294 if (!ReadFile(pipe, child_exit_event, sizeof(HANDLE),
295 &BytesRead, (LPOVERLAPPED) NULL)
296 || (BytesRead != sizeof(HANDLE))) {
297 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00385)
298 "Child: Unable to retrieve the exit event from the parent");
299 exit(APEXIT_CHILDINIT);
300 }
301
302 if (!ReadFile(pipe, &os_start, sizeof(os_start),
303 &BytesRead, (LPOVERLAPPED) NULL)
304 || (BytesRead != sizeof(os_start))) {
305 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00386)
306 "Child: Unable to retrieve the start_mutex from the parent");
307 exit(APEXIT_CHILDINIT);
308 }
309 *child_start_mutex = NULL;
310 if ((rv = apr_os_proc_mutex_put(child_start_mutex, &os_start, s->process->pool))
311 != APR_SUCCESS) {
312 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00387)
313 "Child: Unable to access the start_mutex from the parent");
314 exit(APEXIT_CHILDINIT);
315 }
316
317 if (!ReadFile(pipe, &hScore, sizeof(hScore),
318 &BytesRead, (LPOVERLAPPED) NULL)
319 || (BytesRead != sizeof(hScore))) {
320 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00388)
321 "Child: Unable to retrieve the scoreboard from the parent");
322 exit(APEXIT_CHILDINIT);
323 }
324 *scoreboard_shm = NULL;
325 if ((rv = apr_os_shm_put(scoreboard_shm, &hScore, s->process->pool))
326 != APR_SUCCESS) {
327 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00389)
328 "Child: Unable to access the scoreboard from the parent");
329 exit(APEXIT_CHILDINIT);
330 }
331
332 rv = ap_reopen_scoreboard(s->process->pool, scoreboard_shm, 1);
333 if (rv || !(sb_shared = apr_shm_baseaddr_get(*scoreboard_shm))) {
334 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00390)
335 "Child: Unable to reopen the scoreboard from the parent");
336 exit(APEXIT_CHILDINIT);
337 }
338 /* We must 'initialize' the scoreboard to relink all the
339 * process-local pointer arrays into the shared memory block.
340 */
341 ap_init_scoreboard(sb_shared);
342
343 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00391)
344 "Child: Retrieved our scoreboard from the parent.");
345 }
346
347
send_handles_to_child(apr_pool_t * p,HANDLE child_ready_event,HANDLE child_exit_event,apr_proc_mutex_t * child_start_mutex,apr_shm_t * scoreboard_shm,HANDLE hProcess,apr_file_t * child_in)348 static int send_handles_to_child(apr_pool_t *p,
349 HANDLE child_ready_event,
350 HANDLE child_exit_event,
351 apr_proc_mutex_t *child_start_mutex,
352 apr_shm_t *scoreboard_shm,
353 HANDLE hProcess,
354 apr_file_t *child_in)
355 {
356 apr_status_t rv;
357 HANDLE hCurrentProcess = GetCurrentProcess();
358 HANDLE hDup;
359 HANDLE os_start;
360 HANDLE hScore;
361 apr_size_t BytesWritten;
362
363 if (!DuplicateHandle(hCurrentProcess, child_ready_event, hProcess, &hDup,
364 EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
365 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00392)
366 "Parent: Unable to duplicate the ready event handle for the child");
367 return -1;
368 }
369 if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
370 != APR_SUCCESS) {
371 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00393)
372 "Parent: Unable to send the exit event handle to the child");
373 return -1;
374 }
375 if (!DuplicateHandle(hCurrentProcess, child_exit_event, hProcess, &hDup,
376 EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
377 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00394)
378 "Parent: Unable to duplicate the exit event handle for the child");
379 return -1;
380 }
381 if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
382 != APR_SUCCESS) {
383 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00395)
384 "Parent: Unable to send the exit event handle to the child");
385 return -1;
386 }
387 if ((rv = apr_os_proc_mutex_get(&os_start, child_start_mutex)) != APR_SUCCESS) {
388 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00396)
389 "Parent: Unable to retrieve the start mutex for the child");
390 return -1;
391 }
392 if (!DuplicateHandle(hCurrentProcess, os_start, hProcess, &hDup,
393 SYNCHRONIZE, FALSE, 0)) {
394 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00397)
395 "Parent: Unable to duplicate the start mutex to the child");
396 return -1;
397 }
398 if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
399 != APR_SUCCESS) {
400 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00398)
401 "Parent: Unable to send the start mutex to the child");
402 return -1;
403 }
404 if ((rv = apr_os_shm_get(&hScore, scoreboard_shm)) != APR_SUCCESS) {
405 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00399)
406 "Parent: Unable to retrieve the scoreboard handle for the child");
407 return -1;
408 }
409 if (!DuplicateHandle(hCurrentProcess, hScore, hProcess, &hDup,
410 FILE_MAP_READ | FILE_MAP_WRITE, FALSE, 0)) {
411 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00400)
412 "Parent: Unable to duplicate the scoreboard handle to the child");
413 return -1;
414 }
415 if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
416 != APR_SUCCESS) {
417 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00401)
418 "Parent: Unable to send the scoreboard handle to the child");
419 return -1;
420 }
421
422 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00402)
423 "Parent: Sent the scoreboard to the child");
424 return 0;
425 }
426
427
428 /*
429 * get_listeners_from_parent()
430 * The listen sockets are opened in the parent. This function, which runs
431 * exclusively in the child process, receives them from the parent and
432 * makes them availeble in the child.
433 */
get_listeners_from_parent(server_rec * s)434 static void get_listeners_from_parent(server_rec *s)
435 {
436 WSAPROTOCOL_INFO WSAProtocolInfo;
437 ap_listen_rec *lr;
438 DWORD BytesRead;
439 int lcnt = 0;
440 SOCKET nsd;
441
442 /* Set up a default listener if necessary */
443 if (ap_listeners == NULL) {
444 ap_listen_rec *lr;
445 lr = apr_palloc(s->process->pool, sizeof(ap_listen_rec));
446 lr->sd = NULL;
447 lr->next = ap_listeners;
448 ap_listeners = lr;
449 }
450
451 /* Open the pipe to the parent process to receive the inherited socket
452 * data. The sockets have been set to listening in the parent process.
453 *
454 * *** We now do this way back in winnt_rewrite_args
455 * pipe = GetStdHandle(STD_INPUT_HANDLE);
456 */
457 for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
458 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00403)
459 "Child: Waiting for data for listening socket %pI",
460 lr->bind_addr);
461 if (!ReadFile(pipe, &WSAProtocolInfo, sizeof(WSAPROTOCOL_INFO),
462 &BytesRead, (LPOVERLAPPED) NULL)) {
463 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00404)
464 "Child: Unable to read socket data from parent");
465 exit(APEXIT_CHILDINIT);
466 }
467
468 nsd = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO,
469 &WSAProtocolInfo, 0, 0);
470 if (nsd == INVALID_SOCKET) {
471 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf, APLOGNO(00405)
472 "Child: WSASocket failed to open the inherited socket");
473 exit(APEXIT_CHILDINIT);
474 }
475
476 if (!SetHandleInformation((HANDLE)nsd, HANDLE_FLAG_INHERIT, 0)) {
477 ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(00406)
478 "Child: SetHandleInformation failed");
479 }
480 apr_os_sock_put(&lr->sd, &nsd, s->process->pool);
481 }
482
483 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00407)
484 "Child: retrieved %d listeners from parent", lcnt);
485 }
486
487
send_listeners_to_child(apr_pool_t * p,DWORD dwProcessId,apr_file_t * child_in)488 static int send_listeners_to_child(apr_pool_t *p, DWORD dwProcessId,
489 apr_file_t *child_in)
490 {
491 apr_status_t rv;
492 int lcnt = 0;
493 ap_listen_rec *lr;
494 LPWSAPROTOCOL_INFO lpWSAProtocolInfo;
495 apr_size_t BytesWritten;
496
497 /* Run the chain of open sockets. For each socket, duplicate it
498 * for the target process then send the WSAPROTOCOL_INFO
499 * (returned by dup socket) to the child.
500 */
501 for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
502 apr_os_sock_t nsd;
503 lpWSAProtocolInfo = apr_pcalloc(p, sizeof(WSAPROTOCOL_INFO));
504 apr_os_sock_get(&nsd, lr->sd);
505 ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00408)
506 "Parent: Duplicating socket %d (%pI) and sending it to child process %lu",
507 nsd, lr->bind_addr, dwProcessId);
508 if (WSADuplicateSocket(nsd, dwProcessId,
509 lpWSAProtocolInfo) == SOCKET_ERROR) {
510 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf, APLOGNO(00409)
511 "Parent: WSADuplicateSocket failed for socket %d. Check the FAQ.", nsd);
512 return -1;
513 }
514
515 if ((rv = apr_file_write_full(child_in, lpWSAProtocolInfo,
516 sizeof(WSAPROTOCOL_INFO), &BytesWritten))
517 != APR_SUCCESS) {
518 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00410)
519 "Parent: Unable to write duplicated socket %d to the child.", nsd);
520 return -1;
521 }
522 }
523
524 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, APLOGNO(00411)
525 "Parent: Sent %d listeners to child %lu", lcnt, dwProcessId);
526 return 0;
527 }
528
529 enum waitlist_e {
530 waitlist_ready = 0,
531 waitlist_term = 1
532 };
533
create_process(apr_pool_t * p,HANDLE * child_proc,HANDLE * child_exit_event,DWORD * child_pid)534 static int create_process(apr_pool_t *p, HANDLE *child_proc, HANDLE *child_exit_event,
535 DWORD *child_pid)
536 {
537 /* These NEVER change for the lifetime of this parent
538 */
539 static char **args = NULL;
540 static char pidbuf[28];
541
542 apr_status_t rv;
543 apr_pool_t *ptemp;
544 apr_procattr_t *attr;
545 apr_proc_t new_child;
546 HANDLE hExitEvent;
547 HANDLE waitlist[2]; /* see waitlist_e */
548 char *cmd;
549 char *cwd;
550 char **env;
551 int envc;
552
553 apr_pool_create_ex(&ptemp, p, NULL, NULL);
554
555 /* Build the command line. Should look something like this:
556 * C:/apache/bin/httpd.exe -f ap_server_confname
557 * First, get the path to the executable...
558 */
559 apr_procattr_create(&attr, ptemp);
560 apr_procattr_cmdtype_set(attr, APR_PROGRAM);
561 apr_procattr_detach_set(attr, 1);
562 if (((rv = apr_filepath_get(&cwd, 0, ptemp)) != APR_SUCCESS)
563 || ((rv = apr_procattr_dir_set(attr, cwd)) != APR_SUCCESS)) {
564 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00412)
565 "Parent: Failed to get the current path");
566 }
567
568 if (!args) {
569 /* Build the args array, only once since it won't change
570 * for the lifetime of this parent process.
571 */
572 if ((rv = ap_os_proc_filepath(&cmd, ptemp))
573 != APR_SUCCESS) {
574 ap_log_error(APLOG_MARK, APLOG_CRIT, ERROR_BAD_PATHNAME, ap_server_conf, APLOGNO(00413)
575 "Parent: Failed to get full path of %s",
576 ap_server_conf->process->argv[0]);
577 apr_pool_destroy(ptemp);
578 return -1;
579 }
580
581 args = malloc((ap_server_conf->process->argc + 1) * sizeof (char*));
582 memcpy(args + 1, ap_server_conf->process->argv + 1,
583 (ap_server_conf->process->argc - 1) * sizeof (char*));
584 args[0] = malloc(strlen(cmd) + 1);
585 strcpy(args[0], cmd);
586 args[ap_server_conf->process->argc] = NULL;
587 }
588 else {
589 cmd = args[0];
590 }
591
592 /* Create a pipe to send handles to the child */
593 if ((rv = apr_procattr_io_set(attr, APR_FULL_BLOCK,
594 APR_NO_PIPE, APR_NO_PIPE)) != APR_SUCCESS) {
595 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00414)
596 "Parent: Unable to create child stdin pipe.");
597 apr_pool_destroy(ptemp);
598 return -1;
599 }
600
601 /* Create the child_ready_event */
602 waitlist[waitlist_ready] = CreateEvent(NULL, TRUE, FALSE, NULL);
603 if (!waitlist[waitlist_ready]) {
604 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00415)
605 "Parent: Could not create ready event for child process");
606 apr_pool_destroy (ptemp);
607 return -1;
608 }
609
610 /* Create the child_exit_event */
611 hExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
612 if (!hExitEvent) {
613 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00416)
614 "Parent: Could not create exit event for child process");
615 apr_pool_destroy(ptemp);
616 CloseHandle(waitlist[waitlist_ready]);
617 return -1;
618 }
619
620 /* Build the env array */
621 for (envc = 0; _environ[envc]; ++envc) {
622 ;
623 }
624 env = apr_palloc(ptemp, (envc + 2) * sizeof (char*));
625 memcpy(env, _environ, envc * sizeof (char*));
626 apr_snprintf(pidbuf, sizeof(pidbuf), "AP_PARENT_PID=%lu", parent_pid);
627 env[envc] = pidbuf;
628 env[envc + 1] = NULL;
629
630 rv = apr_proc_create(&new_child, cmd, (const char * const *)args,
631 (const char * const *)env, attr, ptemp);
632 if (rv != APR_SUCCESS) {
633 ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf, APLOGNO(00417)
634 "Parent: Failed to create the child process.");
635 apr_pool_destroy(ptemp);
636 CloseHandle(hExitEvent);
637 CloseHandle(waitlist[waitlist_ready]);
638 CloseHandle(new_child.hproc);
639 return -1;
640 }
641
642 ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00418)
643 "Parent: Created child process %d", new_child.pid);
644
645 if (send_handles_to_child(ptemp, waitlist[waitlist_ready], hExitEvent,
646 start_mutex, ap_scoreboard_shm,
647 new_child.hproc, new_child.in)) {
648 /*
649 * This error is fatal, mop up the child and move on
650 * We toggle the child's exit event to cause this child
651 * to quit even as it is attempting to start.
652 */
653 SetEvent(hExitEvent);
654 apr_pool_destroy(ptemp);
655 CloseHandle(hExitEvent);
656 CloseHandle(waitlist[waitlist_ready]);
657 CloseHandle(new_child.hproc);
658 return -1;
659 }
660
661 /* Important:
662 * Give the child process a chance to run before dup'ing the sockets.
663 * We have already set the listening sockets noninheritable, but if
664 * WSADuplicateSocket runs before the child process initializes
665 * the listeners will be inherited anyway.
666 */
667 waitlist[waitlist_term] = new_child.hproc;
668 rv = WaitForMultipleObjects(2, waitlist, FALSE, INFINITE);
669 CloseHandle(waitlist[waitlist_ready]);
670 if (rv != WAIT_OBJECT_0) {
671 /*
672 * Outch... that isn't a ready signal. It's dead, Jim!
673 */
674 SetEvent(hExitEvent);
675 apr_pool_destroy(ptemp);
676 CloseHandle(hExitEvent);
677 CloseHandle(new_child.hproc);
678 return -1;
679 }
680
681 if (send_listeners_to_child(ptemp, new_child.pid, new_child.in)) {
682 /*
683 * This error is fatal, mop up the child and move on
684 * We toggle the child's exit event to cause this child
685 * to quit even as it is attempting to start.
686 */
687 SetEvent(hExitEvent);
688 apr_pool_destroy(ptemp);
689 CloseHandle(hExitEvent);
690 CloseHandle(new_child.hproc);
691 return -1;
692 }
693
694 apr_file_close(new_child.in);
695
696 *child_exit_event = hExitEvent;
697 *child_proc = new_child.hproc;
698 *child_pid = new_child.pid;
699
700 return 0;
701 }
702
703 /***********************************************************************
704 * master_main()
705 * master_main() runs in the parent process. It creates the child
706 * process which handles HTTP requests then waits on one of three
707 * events:
708 *
709 * restart_event
710 * -------------
711 * The restart event causes master_main to start a new child process and
712 * tells the old child process to exit (by setting the child_exit_event).
713 * The restart event is set as a result of one of the following:
714 * 1. An apache -k restart command on the command line
715 * 2. A command received from Windows service manager which gets
716 * translated into an ap_signal_parent(SIGNAL_PARENT_RESTART)
717 * call by code in service.c.
718 * 3. The child process calling ap_signal_parent(SIGNAL_PARENT_RESTART)
719 * as a result of hitting MaxConnectionsPerChild.
720 *
721 * shutdown_event
722 * --------------
723 * The shutdown event causes master_main to tell the child process to
724 * exit and that the server is shutting down. The shutdown event is
725 * set as a result of one of the following:
726 * 1. An apache -k shutdown command on the command line
727 * 2. A command received from Windows service manager which gets
728 * translated into an ap_signal_parent(SIGNAL_PARENT_SHUTDOWN)
729 * call by code in service.c.
730 *
731 * child process handle
732 * --------------------
733 * The child process handle will be signaled if the child process
734 * exits for any reason. In a normal running server, the signaling
735 * of this event means that the child process has exited prematurely
736 * due to a seg fault or other irrecoverable error. For server
737 * robustness, master_main will restart the child process under this
738 * condtion.
739 *
740 * master_main uses the child_exit_event to signal the child process
741 * to exit.
742 **********************************************************************/
743 #define NUM_WAIT_HANDLES 3
744 #define CHILD_HANDLE 0
745 #define SHUTDOWN_HANDLE 1
746 #define RESTART_HANDLE 2
master_main(server_rec * s,HANDLE shutdown_event,HANDLE restart_event)747 static int master_main(server_rec *s, HANDLE shutdown_event, HANDLE restart_event)
748 {
749 int rv, cld;
750 int child_created;
751 int restart_pending;
752 int shutdown_pending;
753 HANDLE child_exit_event;
754 HANDLE event_handles[NUM_WAIT_HANDLES];
755 DWORD child_pid;
756
757 child_created = restart_pending = shutdown_pending = 0;
758
759 event_handles[SHUTDOWN_HANDLE] = shutdown_event;
760 event_handles[RESTART_HANDLE] = restart_event;
761
762 /* Create a single child process */
763 rv = create_process(pconf, &event_handles[CHILD_HANDLE],
764 &child_exit_event, &child_pid);
765 if (rv < 0)
766 {
767 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00419)
768 "master_main: create child process failed. Exiting.");
769 shutdown_pending = 1;
770 goto die_now;
771 }
772
773 child_created = 1;
774
775 if (!strcasecmp(signal_arg, "runservice")) {
776 mpm_service_started();
777 }
778
779 /* Update the scoreboard. Note that there is only a single active
780 * child at once.
781 */
782 ap_scoreboard_image->parent[0].quiescing = 0;
783 winnt_note_child_started(/* slot */ 0, child_pid);
784
785 /* Wait for shutdown or restart events or for child death */
786 winnt_mpm_state = AP_MPMQ_RUNNING;
787 rv = WaitForMultipleObjects(NUM_WAIT_HANDLES, (HANDLE *) event_handles, FALSE, INFINITE);
788 cld = rv - WAIT_OBJECT_0;
789 if (rv == WAIT_FAILED) {
790 /* Something serious is wrong */
791 ap_log_error(APLOG_MARK,APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00420)
792 "master_main: WaitForMultipleObjects WAIT_FAILED -- doing server shutdown");
793 shutdown_pending = 1;
794 }
795 else if (rv == WAIT_TIMEOUT) {
796 /* Hey, this cannot happen */
797 ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00421)
798 "master_main: WaitForMultipleObjects with INFINITE wait exited with WAIT_TIMEOUT");
799 shutdown_pending = 1;
800 }
801 else if (cld == SHUTDOWN_HANDLE) {
802 /* shutdown_event signalled */
803 shutdown_pending = 1;
804 ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, s, APLOGNO(00422)
805 "Parent: Received shutdown signal -- Shutting down the server.");
806 if (ResetEvent(shutdown_event) == 0) {
807 ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00423)
808 "ResetEvent(shutdown_event)");
809 }
810 }
811 else if (cld == RESTART_HANDLE) {
812 /* Received a restart event. Prepare the restart_event to be reused
813 * then signal the child process to exit.
814 */
815 restart_pending = 1;
816 ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, APLOGNO(00424)
817 "Parent: Received restart signal -- Restarting the server.");
818 if (ResetEvent(restart_event) == 0) {
819 ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00425)
820 "Parent: ResetEvent(restart_event) failed.");
821 }
822 if (SetEvent(child_exit_event) == 0) {
823 ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s, APLOGNO(00426)
824 "Parent: SetEvent for child process event %pp failed.",
825 event_handles[CHILD_HANDLE]);
826 }
827 /* Don't wait to verify that the child process really exits,
828 * just move on with the restart.
829 */
830 CloseHandle(event_handles[CHILD_HANDLE]);
831 event_handles[CHILD_HANDLE] = NULL;
832 }
833 else {
834 /* The child process exited prematurely due to a fatal error. */
835 DWORD exitcode;
836 if (!GetExitCodeProcess(event_handles[CHILD_HANDLE], &exitcode)) {
837 /* HUH? We did exit, didn't we? */
838 exitcode = APEXIT_CHILDFATAL;
839 }
840 if ( exitcode == APEXIT_CHILDFATAL
841 || exitcode == APEXIT_CHILDINIT
842 || exitcode == APEXIT_INIT) {
843 ap_log_error(APLOG_MARK, APLOG_CRIT, 0, ap_server_conf, APLOGNO(00427)
844 "Parent: child process %lu exited with status %lu -- Aborting.",
845 child_pid, exitcode);
846 shutdown_pending = 1;
847 }
848 else {
849 int i;
850 restart_pending = 1;
851 ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00428)
852 "Parent: child process %lu exited with status %lu -- Restarting.",
853 child_pid, exitcode);
854 for (i = 0; i < ap_threads_per_child; i++) {
855 ap_update_child_status_from_indexes(0, i, SERVER_DEAD, NULL);
856 }
857 }
858 CloseHandle(event_handles[CHILD_HANDLE]);
859 event_handles[CHILD_HANDLE] = NULL;
860 }
861
862 winnt_note_child_killed(/* slot */ 0);
863
864 if (restart_pending) {
865 ++my_generation;
866 ap_scoreboard_image->global->running_generation = my_generation;
867 }
868 die_now:
869 if (shutdown_pending)
870 {
871 int timeout = 30000; /* Timeout is milliseconds */
872 winnt_mpm_state = AP_MPMQ_STOPPING;
873
874 if (!child_created) {
875 return 0; /* Tell the caller we do not want to restart */
876 }
877
878 /* This shutdown is only marginally graceful. We will give the
879 * child a bit of time to exit gracefully. If the time expires,
880 * the child will be wacked.
881 */
882 if (!strcasecmp(signal_arg, "runservice")) {
883 mpm_service_stopping();
884 }
885 /* Signal the child processes to exit */
886 if (SetEvent(child_exit_event) == 0) {
887 ap_log_error(APLOG_MARK,APLOG_ERR, apr_get_os_error(), ap_server_conf, APLOGNO(00429)
888 "Parent: SetEvent for child process event %pp failed",
889 event_handles[CHILD_HANDLE]);
890 }
891 if (event_handles[CHILD_HANDLE]) {
892 rv = WaitForSingleObject(event_handles[CHILD_HANDLE], timeout);
893 if (rv == WAIT_OBJECT_0) {
894 ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00430)
895 "Parent: Child process %lu exited successfully.", child_pid);
896 CloseHandle(event_handles[CHILD_HANDLE]);
897 event_handles[CHILD_HANDLE] = NULL;
898 }
899 else {
900 ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, APLOGNO(00431)
901 "Parent: Forcing termination of child process %lu",
902 child_pid);
903 TerminateProcess(event_handles[CHILD_HANDLE], 1);
904 CloseHandle(event_handles[CHILD_HANDLE]);
905 event_handles[CHILD_HANDLE] = NULL;
906 }
907 }
908 CloseHandle(child_exit_event);
909 return 0; /* Tell the caller we do not want to restart */
910 }
911 winnt_mpm_state = AP_MPMQ_STARTING;
912 CloseHandle(child_exit_event);
913 return 1; /* Tell the caller we want a restart */
914 }
915
916 /* service_nt_main_fn needs to append the StartService() args
917 * outside of our call stack and thread as the service starts...
918 */
919 apr_array_header_t *mpm_new_argv;
920
921 /* Remember service_to_start failures to log and fail in pre_config.
922 * Remember inst_argc and inst_argv for installing or starting the
923 * service after we preflight the config.
924 */
925
winnt_query(int query_code,int * result,apr_status_t * rv)926 static int winnt_query(int query_code, int *result, apr_status_t *rv)
927 {
928 *rv = APR_SUCCESS;
929 switch (query_code) {
930 case AP_MPMQ_MAX_DAEMON_USED:
931 *result = MAXIMUM_WAIT_OBJECTS;
932 break;
933 case AP_MPMQ_IS_THREADED:
934 *result = AP_MPMQ_STATIC;
935 break;
936 case AP_MPMQ_IS_FORKED:
937 *result = AP_MPMQ_NOT_SUPPORTED;
938 break;
939 case AP_MPMQ_HARD_LIMIT_DAEMONS:
940 *result = HARD_SERVER_LIMIT;
941 break;
942 case AP_MPMQ_HARD_LIMIT_THREADS:
943 *result = thread_limit;
944 break;
945 case AP_MPMQ_MAX_THREADS:
946 *result = ap_threads_per_child;
947 break;
948 case AP_MPMQ_MIN_SPARE_DAEMONS:
949 *result = 0;
950 break;
951 case AP_MPMQ_MIN_SPARE_THREADS:
952 *result = 0;
953 break;
954 case AP_MPMQ_MAX_SPARE_DAEMONS:
955 *result = 0;
956 break;
957 case AP_MPMQ_MAX_SPARE_THREADS:
958 *result = 0;
959 break;
960 case AP_MPMQ_MAX_REQUESTS_DAEMON:
961 *result = ap_max_requests_per_child;
962 break;
963 case AP_MPMQ_MAX_DAEMONS:
964 *result = 1;
965 break;
966 case AP_MPMQ_MPM_STATE:
967 *result = winnt_mpm_state;
968 break;
969 case AP_MPMQ_GENERATION:
970 *result = my_generation;
971 break;
972 default:
973 *rv = APR_ENOTIMPL;
974 break;
975 }
976 return OK;
977 }
978
winnt_get_name(void)979 static const char *winnt_get_name(void)
980 {
981 return "WinNT";
982 }
983
984 #define SERVICE_UNSET (-1)
985 static apr_status_t service_set = SERVICE_UNSET;
986 static apr_status_t service_to_start_success;
987 static int inst_argc;
988 static const char * const *inst_argv;
989 static const char *service_name = NULL;
990
winnt_rewrite_args(process_rec * process)991 static void winnt_rewrite_args(process_rec *process)
992 {
993 /* Handle the following SCM aspects in this phase:
994 *
995 * -k runservice [transition in service context only]
996 * -k install
997 * -k config
998 * -k uninstall
999 * -k stop
1000 * -k shutdown (same as -k stop). Maintained for backward compatability.
1001 *
1002 * We can't leave this phase until we know our identity
1003 * and modify the command arguments appropriately.
1004 *
1005 * We do not care if the .conf file exists or is parsable when
1006 * attempting to stop or uninstall a service.
1007 */
1008 apr_status_t rv;
1009 char *def_server_root;
1010 char *binpath;
1011 char optbuf[3];
1012 const char *opt_arg;
1013 int fixed_args;
1014 char *pid;
1015 apr_getopt_t *opt;
1016 int running_as_service = 1;
1017 int errout = 0;
1018 apr_file_t *nullfile;
1019
1020 pconf = process->pconf;
1021
1022 osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
1023 GetVersionEx(&osver);
1024
1025 /* We wish this was *always* a reservation, but sadly it wasn't so and
1026 * we couldn't break a hard limit prior to NT Kernel 5.1
1027 */
1028 if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT
1029 && ((osver.dwMajorVersion > 5)
1030 || ((osver.dwMajorVersion == 5) && (osver.dwMinorVersion > 0)))) {
1031 stack_res_flag = STACK_SIZE_PARAM_IS_A_RESERVATION;
1032 }
1033
1034 /* AP_PARENT_PID is only valid in the child */
1035 pid = getenv("AP_PARENT_PID");
1036 if (pid)
1037 {
1038 HANDLE filehand;
1039 HANDLE hproc = GetCurrentProcess();
1040
1041 /* This is the child */
1042 my_pid = GetCurrentProcessId();
1043 parent_pid = (DWORD) atol(pid);
1044
1045 /* Prevent holding open the (nonexistant) console */
1046 ap_real_exit_code = 0;
1047
1048 /* The parent gave us stdin, we need to remember this
1049 * handle, and no longer inherit it at our children
1050 * (we can't slurp it up now, we just aren't ready yet).
1051 * The original handle is closed below, at apr_file_dup2()
1052 */
1053 pipe = GetStdHandle(STD_INPUT_HANDLE);
1054 if (DuplicateHandle(hproc, pipe,
1055 hproc, &filehand, 0, FALSE,
1056 DUPLICATE_SAME_ACCESS)) {
1057 pipe = filehand;
1058 }
1059
1060 /* The parent gave us stdout of the NUL device,
1061 * and expects us to suck up stdin of all of our
1062 * shared handles and data from the parent.
1063 * Don't infect child processes with our stdin
1064 * handle, use another handle to NUL!
1065 */
1066 {
1067 apr_file_t *infile, *outfile;
1068 if ((apr_file_open_stdout(&outfile, process->pool) == APR_SUCCESS)
1069 && (apr_file_open_stdin(&infile, process->pool) == APR_SUCCESS))
1070 apr_file_dup2(infile, outfile, process->pool);
1071 }
1072
1073 /* This child needs the existing stderr opened for logging,
1074 * already
1075 */
1076
1077
1078 /* The parent is responsible for providing the
1079 * COMPLETE ARGUMENTS REQUIRED to the child.
1080 *
1081 * No further argument parsing is needed, but
1082 * for good measure we will provide a simple
1083 * signal string for later testing.
1084 */
1085 signal_arg = "runchild";
1086 return;
1087 }
1088
1089 /* This is the parent, we have a long way to go :-) */
1090 parent_pid = my_pid = GetCurrentProcessId();
1091
1092 /* This behavior is voided by setting real_exit_code to 0 */
1093 atexit(hold_console_open_on_error);
1094
1095 /* Rewrite process->argv[];
1096 *
1097 * strip out -k signal into signal_arg
1098 * strip out -n servicename and set the names
1099 * add default -d serverroot from the path of this executable
1100 *
1101 * The end result will look like:
1102 *
1103 * The invocation command (%0)
1104 * The -d serverroot default from the running executable
1105 * The requested service's (-n) registry ConfigArgs
1106 * The WinNT SCM's StartService() args
1107 */
1108 if ((rv = ap_os_proc_filepath(&binpath, process->pconf))
1109 != APR_SUCCESS) {
1110 ap_log_error(APLOG_MARK,APLOG_CRIT, rv, NULL, APLOGNO(00432)
1111 "Failed to get the full path of %s", process->argv[0]);
1112 exit(APEXIT_INIT);
1113 }
1114 /* WARNING: There is an implict assumption here that the
1115 * executable resides in ServerRoot or ServerRoot\bin
1116 */
1117 def_server_root = (char *) apr_filepath_name_get(binpath);
1118 if (def_server_root > binpath) {
1119 *(def_server_root - 1) = '\0';
1120 def_server_root = (char *) apr_filepath_name_get(binpath);
1121 if (!strcasecmp(def_server_root, "bin"))
1122 *(def_server_root - 1) = '\0';
1123 }
1124 apr_filepath_merge(&def_server_root, NULL, binpath,
1125 APR_FILEPATH_TRUENAME, process->pool);
1126
1127 /* Use process->pool so that the rewritten argv
1128 * lasts for the lifetime of the server process,
1129 * because pconf will be destroyed after the
1130 * initial pre-flight of the config parser.
1131 */
1132 mpm_new_argv = apr_array_make(process->pool, process->argc + 2,
1133 sizeof(const char *));
1134 *(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
1135 *(const char **)apr_array_push(mpm_new_argv) = "-d";
1136 *(const char **)apr_array_push(mpm_new_argv) = def_server_root;
1137
1138 fixed_args = mpm_new_argv->nelts;
1139
1140 optbuf[0] = '-';
1141 optbuf[2] = '\0';
1142 apr_getopt_init(&opt, process->pool, process->argc, process->argv);
1143 opt->errfn = NULL;
1144 while ((rv = apr_getopt(opt, "wn:k:" AP_SERVER_BASEARGS,
1145 optbuf + 1, &opt_arg)) == APR_SUCCESS) {
1146 switch (optbuf[1]) {
1147
1148 /* Shortcuts; include the -w option to hold the window open on error.
1149 * This must not be toggled once we reset ap_real_exit_code to 0!
1150 */
1151 case 'w':
1152 if (ap_real_exit_code)
1153 ap_real_exit_code = 2;
1154 break;
1155
1156 case 'n':
1157 service_set = mpm_service_set_name(process->pool, &service_name,
1158 opt_arg);
1159 break;
1160
1161 case 'k':
1162 signal_arg = opt_arg;
1163 break;
1164
1165 case 'E':
1166 errout = 1;
1167 /* Fall through so the Apache main() handles the 'E' arg */
1168 default:
1169 *(const char **)apr_array_push(mpm_new_argv) =
1170 apr_pstrdup(process->pool, optbuf);
1171
1172 if (opt_arg) {
1173 *(const char **)apr_array_push(mpm_new_argv) = opt_arg;
1174 }
1175 break;
1176 }
1177 }
1178
1179 /* back up to capture the bad argument */
1180 if (rv == APR_BADCH || rv == APR_BADARG) {
1181 opt->ind--;
1182 }
1183
1184 while (opt->ind < opt->argc) {
1185 *(const char **)apr_array_push(mpm_new_argv) =
1186 apr_pstrdup(process->pool, opt->argv[opt->ind++]);
1187 }
1188
1189 /* Track the number of args actually entered by the user */
1190 inst_argc = mpm_new_argv->nelts - fixed_args;
1191
1192 /* Provide a default 'run' -k arg to simplify signal_arg tests */
1193 if (!signal_arg)
1194 {
1195 signal_arg = "run";
1196 running_as_service = 0;
1197 }
1198
1199 if (!strcasecmp(signal_arg, "runservice"))
1200 {
1201 /* Start the NT Service _NOW_ because the WinNT SCM is
1202 * expecting us to rapidly assume control of our own
1203 * process, the SCM will tell us our service name, and
1204 * may have extra StartService() command arguments to
1205 * add for us.
1206 *
1207 * The SCM will generally invoke the executable with
1208 * the c:\win\system32 default directory. This is very
1209 * lethal if folks use ServerRoot /foopath on windows
1210 * without a drive letter. Change to the default root
1211 * (path to apache root, above /bin) for safety.
1212 */
1213 apr_filepath_set(def_server_root, process->pool);
1214
1215 /* Any other process has a console, so we don't to begin
1216 * a Win9x service until the configuration is parsed and
1217 * any command line errors are reported.
1218 *
1219 * We hold the return value so that we can die in pre_config
1220 * after logging begins, and the failure can land in the log.
1221 */
1222 if (!errout) {
1223 mpm_nt_eventlog_stderr_open(service_name, process->pool);
1224 }
1225 service_to_start_success = mpm_service_to_start(&service_name,
1226 process->pool);
1227 if (service_to_start_success == APR_SUCCESS) {
1228 service_set = APR_SUCCESS;
1229 }
1230
1231 /* Open a null handle to soak stdout in this process.
1232 * Windows service processes are missing any file handle
1233 * usable for stdin/out/err. This was the cause of later
1234 * trouble with invocations of apr_file_open_stdout()
1235 */
1236 if ((rv = apr_file_open(&nullfile, "NUL",
1237 APR_READ | APR_WRITE, APR_OS_DEFAULT,
1238 process->pool)) == APR_SUCCESS) {
1239 apr_file_t *nullstdout;
1240 if (apr_file_open_stdout(&nullstdout, process->pool)
1241 == APR_SUCCESS)
1242 apr_file_dup2(nullstdout, nullfile, process->pool);
1243 apr_file_close(nullfile);
1244 }
1245 }
1246
1247 /* Get the default for any -k option, except run */
1248 if (service_set == SERVICE_UNSET && strcasecmp(signal_arg, "run")) {
1249 service_set = mpm_service_set_name(process->pool, &service_name,
1250 AP_DEFAULT_SERVICE_NAME);
1251 }
1252
1253 if (!strcasecmp(signal_arg, "install")) /* -k install */
1254 {
1255 if (service_set == APR_SUCCESS)
1256 {
1257 ap_log_error(APLOG_MARK,APLOG_ERR, 0, NULL, APLOGNO(00433)
1258 "%s: Service is already installed.", service_name);
1259 exit(APEXIT_INIT);
1260 }
1261 }
1262 else if (running_as_service)
1263 {
1264 if (service_set == APR_SUCCESS)
1265 {
1266 /* Attempt to Uninstall, or stop, before
1267 * we can read the arguments or .conf files
1268 */
1269 if (!strcasecmp(signal_arg, "uninstall")) {
1270 rv = mpm_service_uninstall();
1271 exit(rv);
1272 }
1273
1274 if ((!strcasecmp(signal_arg, "stop")) ||
1275 (!strcasecmp(signal_arg, "shutdown"))) {
1276 mpm_signal_service(process->pool, 0);
1277 exit(0);
1278 }
1279
1280 rv = mpm_merge_service_args(process->pool, mpm_new_argv,
1281 fixed_args);
1282 if (rv == APR_SUCCESS) {
1283 ap_log_error(APLOG_MARK,APLOG_INFO, 0, NULL, APLOGNO(00434)
1284 "Using ConfigArgs of the installed service "
1285 "\"%s\".", service_name);
1286 }
1287 else {
1288 ap_log_error(APLOG_MARK,APLOG_WARNING, rv, NULL, APLOGNO(00435)
1289 "No installed ConfigArgs for the service "
1290 "\"%s\", using Apache defaults.", service_name);
1291 }
1292 }
1293 else
1294 {
1295 ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL, APLOGNO(00436)
1296 "No installed service named \"%s\".", service_name);
1297 exit(APEXIT_INIT);
1298 }
1299 }
1300 if (strcasecmp(signal_arg, "install") && service_set && service_set != SERVICE_UNSET)
1301 {
1302 ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL, APLOGNO(00437)
1303 "No installed service named \"%s\".", service_name);
1304 exit(APEXIT_INIT);
1305 }
1306
1307 /* Track the args actually entered by the user.
1308 * These will be used for the -k install parameters, as well as
1309 * for the -k start service override arguments.
1310 */
1311 inst_argv = (const char * const *)mpm_new_argv->elts
1312 + mpm_new_argv->nelts - inst_argc;
1313
1314 /* Now, do service install or reconfigure then proceed to
1315 * post_config to test the installed configuration.
1316 */
1317 if (!strcasecmp(signal_arg, "config")) { /* -k config */
1318 /* Reconfigure the service */
1319 rv = mpm_service_install(process->pool, inst_argc, inst_argv, 1);
1320 if (rv != APR_SUCCESS) {
1321 exit(rv);
1322 }
1323
1324 fprintf(stderr,"Testing httpd.conf....\n");
1325 fprintf(stderr,"Errors reported here must be corrected before the "
1326 "service can be started.\n");
1327 }
1328 else if (!strcasecmp(signal_arg, "install")) { /* -k install */
1329 /* Install the service */
1330 rv = mpm_service_install(process->pool, inst_argc, inst_argv, 0);
1331 if (rv != APR_SUCCESS) {
1332 exit(rv);
1333 }
1334
1335 fprintf(stderr,"Testing httpd.conf....\n");
1336 fprintf(stderr,"Errors reported here must be corrected before the "
1337 "service can be started.\n");
1338 }
1339
1340 process->argc = mpm_new_argv->nelts;
1341 process->argv = (const char * const *) mpm_new_argv->elts;
1342 }
1343
1344
winnt_pre_config(apr_pool_t * pconf_,apr_pool_t * plog,apr_pool_t * ptemp)1345 static int winnt_pre_config(apr_pool_t *pconf_, apr_pool_t *plog, apr_pool_t *ptemp)
1346 {
1347 /* Handle the following SCM aspects in this phase:
1348 *
1349 * -k runservice [WinNT errors logged from rewrite_args]
1350 */
1351
1352 /* Initialize shared static objects.
1353 * TODO: Put config related statics into an sconf structure.
1354 */
1355 pconf = pconf_;
1356
1357 if (ap_exists_config_define("ONE_PROCESS") ||
1358 ap_exists_config_define("DEBUG"))
1359 one_process = -1;
1360
1361 /* XXX: presume proper privilages; one nice thing would be
1362 * a loud emit if running as "LocalSystem"/"SYSTEM" to indicate
1363 * they should change to a user with write access to logs/ alone.
1364 */
1365 ap_sys_privileges_handlers(1);
1366
1367 if (!strcasecmp(signal_arg, "runservice")
1368 && (service_to_start_success != APR_SUCCESS)) {
1369 ap_log_error(APLOG_MARK,APLOG_CRIT, service_to_start_success, NULL, APLOGNO(00438)
1370 "%s: Unable to start the service manager.",
1371 service_name);
1372 exit(APEXIT_INIT);
1373 }
1374 else if (ap_state_query(AP_SQ_RUN_MODE) == AP_SQ_RM_NORMAL
1375 && !one_process && !my_generation) {
1376 /* Open a null handle to soak stdout in this process.
1377 * We need to emulate apr_proc_detach, unix performs this
1378 * same check in the pre_config hook (although it is
1379 * arguably premature). Services already fixed this.
1380 */
1381 apr_file_t *nullfile;
1382 apr_status_t rv;
1383 apr_pool_t *pproc = apr_pool_parent_get(pconf);
1384
1385 if ((rv = apr_file_open(&nullfile, "NUL",
1386 APR_READ | APR_WRITE, APR_OS_DEFAULT,
1387 pproc)) == APR_SUCCESS) {
1388 apr_file_t *nullstdout;
1389 if (apr_file_open_stdout(&nullstdout, pproc)
1390 == APR_SUCCESS)
1391 apr_file_dup2(nullstdout, nullfile, pproc);
1392 apr_file_close(nullfile);
1393 }
1394 }
1395
1396 ap_listen_pre_config();
1397 thread_limit = DEFAULT_THREAD_LIMIT;
1398 ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
1399
1400 return OK;
1401 }
1402
winnt_check_config(apr_pool_t * pconf,apr_pool_t * plog,apr_pool_t * ptemp,server_rec * s)1403 static int winnt_check_config(apr_pool_t *pconf, apr_pool_t *plog,
1404 apr_pool_t *ptemp, server_rec* s)
1405 {
1406 int is_parent;
1407 int startup = 0;
1408
1409 /* We want this only in the parent and only the first time around */
1410 is_parent = (parent_pid == my_pid);
1411 if (is_parent &&
1412 ap_state_query(AP_SQ_MAIN_STATE) == AP_SQ_MS_CREATE_PRE_CONFIG) {
1413 startup = 1;
1414 }
1415
1416 if (thread_limit > MAX_THREAD_LIMIT) {
1417 if (startup) {
1418 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00439)
1419 "WARNING: ThreadLimit of %d exceeds compile-time "
1420 "limit of", thread_limit);
1421 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL,
1422 " %d threads, decreasing to %d.",
1423 MAX_THREAD_LIMIT, MAX_THREAD_LIMIT);
1424 } else if (is_parent) {
1425 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00440)
1426 "ThreadLimit of %d exceeds compile-time limit "
1427 "of %d, decreasing to match",
1428 thread_limit, MAX_THREAD_LIMIT);
1429 }
1430 thread_limit = MAX_THREAD_LIMIT;
1431 }
1432 else if (thread_limit < 1) {
1433 if (startup) {
1434 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00441)
1435 "WARNING: ThreadLimit of %d not allowed, "
1436 "increasing to 1.", thread_limit);
1437 } else if (is_parent) {
1438 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00442)
1439 "ThreadLimit of %d not allowed, increasing to 1",
1440 thread_limit);
1441 }
1442 thread_limit = 1;
1443 }
1444
1445 /* You cannot change ThreadLimit across a restart; ignore
1446 * any such attempts.
1447 */
1448 if (!first_thread_limit) {
1449 first_thread_limit = thread_limit;
1450 }
1451 else if (thread_limit != first_thread_limit) {
1452 /* Don't need a startup console version here */
1453 if (is_parent) {
1454 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00443)
1455 "changing ThreadLimit to %d from original value "
1456 "of %d not allowed during restart",
1457 thread_limit, first_thread_limit);
1458 }
1459 thread_limit = first_thread_limit;
1460 }
1461
1462 if (ap_threads_per_child > thread_limit) {
1463 if (startup) {
1464 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00444)
1465 "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
1466 "of", ap_threads_per_child);
1467 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL,
1468 " %d threads, decreasing to %d.",
1469 thread_limit, thread_limit);
1470 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL,
1471 " To increase, please see the ThreadLimit "
1472 "directive.");
1473 } else if (is_parent) {
1474 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00445)
1475 "ThreadsPerChild of %d exceeds ThreadLimit "
1476 "of %d, decreasing to match",
1477 ap_threads_per_child, thread_limit);
1478 }
1479 ap_threads_per_child = thread_limit;
1480 }
1481 else if (ap_threads_per_child < 1) {
1482 if (startup) {
1483 ap_log_error(APLOG_MARK, APLOG_WARNING | APLOG_STARTUP, 0, NULL, APLOGNO(00446)
1484 "WARNING: ThreadsPerChild of %d not allowed, "
1485 "increasing to 1.", ap_threads_per_child);
1486 } else if (is_parent) {
1487 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(00447)
1488 "ThreadsPerChild of %d not allowed, increasing to 1",
1489 ap_threads_per_child);
1490 }
1491 ap_threads_per_child = 1;
1492 }
1493
1494 return OK;
1495 }
1496
winnt_post_config(apr_pool_t * pconf,apr_pool_t * plog,apr_pool_t * ptemp,server_rec * s)1497 static int winnt_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec* s)
1498 {
1499 apr_status_t rv = 0;
1500
1501 /* Handle the following SCM aspects in this phase:
1502 *
1503 * -k install (catch and exit as install was handled in rewrite_args)
1504 * -k config (catch and exit as config was handled in rewrite_args)
1505 * -k start
1506 * -k restart
1507 * -k runservice [Win95, only once - after we parsed the config]
1508 *
1509 * because all of these signals are useful _only_ if there
1510 * is a valid conf\httpd.conf environment to start.
1511 *
1512 * We reached this phase by avoiding errors that would cause
1513 * these options to fail unexpectedly in another process.
1514 */
1515
1516 if (!strcasecmp(signal_arg, "install")) {
1517 /* Service install happens in the rewrite_args hooks. If we
1518 * made it this far, the server configuration is clean and the
1519 * service will successfully start.
1520 */
1521 apr_pool_destroy(s->process->pool);
1522 apr_terminate();
1523 exit(0);
1524 }
1525 if (!strcasecmp(signal_arg, "config")) {
1526 /* Service reconfiguration happens in the rewrite_args hooks. If we
1527 * made it this far, the server configuration is clean and the
1528 * service will successfully start.
1529 */
1530 apr_pool_destroy(s->process->pool);
1531 apr_terminate();
1532 exit(0);
1533 }
1534
1535 if (!strcasecmp(signal_arg, "start")) {
1536 ap_listen_rec *lr;
1537
1538 /* Close the listening sockets. */
1539 for (lr = ap_listeners; lr; lr = lr->next) {
1540 apr_socket_close(lr->sd);
1541 lr->active = 0;
1542 }
1543 rv = mpm_service_start(ptemp, inst_argc, inst_argv);
1544 apr_pool_destroy(s->process->pool);
1545 apr_terminate();
1546 exit (rv);
1547 }
1548
1549 if (!strcasecmp(signal_arg, "restart")) {
1550 mpm_signal_service(ptemp, 1);
1551 apr_pool_destroy(s->process->pool);
1552 apr_terminate();
1553 exit (rv);
1554 }
1555
1556 if (parent_pid == my_pid)
1557 {
1558 if (ap_state_query(AP_SQ_MAIN_STATE) != AP_SQ_MS_CREATE_PRE_CONFIG
1559 && ap_state_query(AP_SQ_CONFIG_GEN) == 1)
1560 {
1561 /* This code should be run once in the parent and not run
1562 * across a restart
1563 */
1564 PSECURITY_ATTRIBUTES sa = GetNullACL(); /* returns NULL if invalid (Win95?) */
1565 setup_signal_names(apr_psprintf(pconf, "ap%lu", parent_pid));
1566
1567 ap_log_pid(pconf, ap_pid_fname);
1568
1569 /* Create shutdown event, apPID_shutdown, where PID is the parent
1570 * Apache process ID. Shutdown is signaled by 'apache -k shutdown'.
1571 */
1572 shutdown_event = CreateEvent(sa, FALSE, FALSE, signal_shutdown_name);
1573 if (!shutdown_event) {
1574 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00448)
1575 "Parent: Cannot create shutdown event %s", signal_shutdown_name);
1576 CleanNullACL((void *)sa);
1577 return HTTP_INTERNAL_SERVER_ERROR;
1578 }
1579
1580 /* Create restart event, apPID_restart, where PID is the parent
1581 * Apache process ID. Restart is signaled by 'apache -k restart'.
1582 */
1583 restart_event = CreateEvent(sa, FALSE, FALSE, signal_restart_name);
1584 if (!restart_event) {
1585 CloseHandle(shutdown_event);
1586 ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf, APLOGNO(00449)
1587 "Parent: Cannot create restart event %s", signal_restart_name);
1588 CleanNullACL((void *)sa);
1589 return HTTP_INTERNAL_SERVER_ERROR;
1590 }
1591 CleanNullACL((void *)sa);
1592
1593 /* Create the start mutex, as an unnamed object for security.
1594 * Ths start mutex is used during a restart to prevent more than
1595 * one child process from entering the accept loop at once.
1596 */
1597 rv = apr_proc_mutex_create(&start_mutex, NULL,
1598 APR_LOCK_DEFAULT,
1599 ap_server_conf->process->pool);
1600 if (rv != APR_SUCCESS) {
1601 ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, APLOGNO(00450)
1602 "%s: Unable to create the start_mutex.",
1603 service_name);
1604 return HTTP_INTERNAL_SERVER_ERROR;
1605 }
1606 }
1607 /* Always reset our console handler to be the first, even on a restart
1608 * because some modules (e.g. mod_perl) might have set a console
1609 * handler to terminate the process.
1610 */
1611 if (strcasecmp(signal_arg, "runservice"))
1612 mpm_start_console_handler();
1613 }
1614 else /* parent_pid != my_pid */
1615 {
1616 mpm_start_child_console_handler();
1617 }
1618 return OK;
1619 }
1620
1621 /* This really should be a post_config hook, but the error log is already
1622 * redirected by that point, so we need to do this in the open_logs phase.
1623 */
winnt_open_logs(apr_pool_t * p,apr_pool_t * plog,apr_pool_t * ptemp,server_rec * s)1624 static int winnt_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
1625 {
1626 /* Initialize shared static objects.
1627 */
1628 if (parent_pid != my_pid) {
1629 return OK;
1630 }
1631
1632 /* We cannot initialize our listeners if we are restarting
1633 * (the parent process already has glomed on to them)
1634 * nor should we do so for service reconfiguration
1635 * (since the service may already be running.)
1636 */
1637 if (!strcasecmp(signal_arg, "restart")
1638 || !strcasecmp(signal_arg, "config")) {
1639 return OK;
1640 }
1641
1642 if (ap_setup_listeners(s) < 1) {
1643 ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
1644 NULL, APLOGNO(00451) "no listening sockets available, shutting down");
1645 return DONE;
1646 }
1647
1648 return OK;
1649 }
1650
winnt_child_init(apr_pool_t * pchild,struct server_rec * s)1651 static void winnt_child_init(apr_pool_t *pchild, struct server_rec *s)
1652 {
1653 apr_status_t rv;
1654
1655 setup_signal_names(apr_psprintf(pchild, "ap%lu", parent_pid));
1656
1657 /* This is a child process, not in single process mode */
1658 if (!one_process) {
1659 /* Set up events and the scoreboard */
1660 get_handles_from_parent(s, &exit_event, &start_mutex,
1661 &ap_scoreboard_shm);
1662
1663 /* Set up the listeners */
1664 get_listeners_from_parent(s);
1665
1666 /* Done reading from the parent, close that channel */
1667 CloseHandle(pipe);
1668
1669 my_generation = ap_scoreboard_image->global->running_generation;
1670 }
1671 else {
1672 /* Single process mode - this lock doesn't even need to exist */
1673 rv = apr_proc_mutex_create(&start_mutex, signal_name_prefix,
1674 APR_LOCK_DEFAULT, s->process->pool);
1675 if (rv != APR_SUCCESS) {
1676 ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, APLOGNO(00452)
1677 "%s child: Unable to init the start_mutex.",
1678 service_name);
1679 exit(APEXIT_CHILDINIT);
1680 }
1681
1682 /* Borrow the shutdown_even as our _child_ loop exit event */
1683 exit_event = shutdown_event;
1684 }
1685 }
1686
1687
winnt_run(apr_pool_t * _pconf,apr_pool_t * plog,server_rec * s)1688 static int winnt_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s )
1689 {
1690 static int restart = 0; /* Default is "not a restart" */
1691
1692 /* ### If non-graceful restarts are ever introduced - we need to rerun
1693 * the pre_mpm hook on subsequent non-graceful restarts. But Win32
1694 * has only graceful style restarts - and we need this hook to act
1695 * the same on Win32 as on Unix.
1696 */
1697 if (!restart && ((parent_pid == my_pid) || one_process)) {
1698 /* Set up the scoreboard. */
1699 if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
1700 return DONE;
1701 }
1702 }
1703
1704 if ((parent_pid != my_pid) || one_process)
1705 {
1706 /* The child process or in one_process (debug) mode
1707 */
1708 ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00453)
1709 "Child process is running");
1710
1711 child_main(pconf);
1712
1713 ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf, APLOGNO(00454)
1714 "Child process is exiting");
1715 return DONE;
1716 }
1717 else
1718 {
1719 /* A real-honest to goodness parent */
1720 ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, APLOGNO(00455)
1721 "%s configured -- resuming normal operations",
1722 ap_get_server_description());
1723 ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf, APLOGNO(00456)
1724 "Server built: %s", ap_get_server_built());
1725 ap_log_command_line(plog, s);
1726
1727 restart = master_main(ap_server_conf, shutdown_event, restart_event);
1728
1729 if (!restart)
1730 {
1731 /* Shutting down. Clean up... */
1732 ap_remove_pid(pconf, ap_pid_fname);
1733 apr_proc_mutex_destroy(start_mutex);
1734
1735 CloseHandle(restart_event);
1736 CloseHandle(shutdown_event);
1737
1738 return DONE;
1739 }
1740 }
1741
1742 return OK; /* Restart */
1743 }
1744
winnt_hooks(apr_pool_t * p)1745 static void winnt_hooks(apr_pool_t *p)
1746 {
1747 /* Our open_logs hook function must run before the core's, or stderr
1748 * will be redirected to a file, and the messages won't print to the
1749 * console.
1750 */
1751 static const char *const aszSucc[] = {"core.c", NULL};
1752
1753 ap_hook_pre_config(winnt_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
1754 ap_hook_check_config(winnt_check_config, NULL, NULL, APR_HOOK_MIDDLE);
1755 ap_hook_post_config(winnt_post_config, NULL, NULL, 0);
1756 ap_hook_child_init(winnt_child_init, NULL, NULL, APR_HOOK_MIDDLE);
1757 ap_hook_open_logs(winnt_open_logs, NULL, aszSucc, APR_HOOK_REALLY_FIRST);
1758 ap_hook_mpm(winnt_run, NULL, NULL, APR_HOOK_MIDDLE);
1759 ap_hook_mpm_query(winnt_query, NULL, NULL, APR_HOOK_MIDDLE);
1760 ap_hook_mpm_get_name(winnt_get_name, NULL, NULL, APR_HOOK_MIDDLE);
1761 ap_hook_insert_network_bucket(winnt_insert_network_bucket, NULL, NULL,
1762 APR_HOOK_MIDDLE);
1763 }
1764
1765 AP_DECLARE_MODULE(mpm_winnt) = {
1766 MPM20_MODULE_STUFF,
1767 winnt_rewrite_args, /* hook to run before apache parses args */
1768 NULL, /* create per-directory config structure */
1769 NULL, /* merge per-directory config structures */
1770 NULL, /* create per-server config structure */
1771 NULL, /* merge per-server config structures */
1772 winnt_cmds, /* command apr_table_t */
1773 winnt_hooks /* register_hooks */
1774 };
1775
1776 #endif /* def WIN32 */
1777