1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2015 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Wez Furlong <wez@thebrainroom.com> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id: 1e821e8a0cbb868efec453560ba303e04f3a1db2 $ */
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include "php.h"
26 #include "php_globals.h"
27 #include "ext/standard/info.h"
28 #include "php_sysvmsg.h"
29 #include "ext/standard/php_var.h"
30 #include "ext/standard/php_smart_str.h"
31
32 /* In order to detect MSG_EXCEPT use at run time; we have no way
33 * of knowing what the bit definitions are, so we can't just define
34 * out own MSG_EXCEPT value. */
35 #define PHP_MSG_IPC_NOWAIT 1
36 #define PHP_MSG_NOERROR 2
37 #define PHP_MSG_EXCEPT 4
38
39 /* True global resources - no need for thread safety here */
40 static int le_sysvmsg;
41
42 /* {{{ arginfo */
43 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_get_queue, 0, 0, 1)
44 ZEND_ARG_INFO(0, key)
45 ZEND_ARG_INFO(0, perms)
46 ZEND_END_ARG_INFO()
47
48 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_send, 0, 0, 3)
49 ZEND_ARG_INFO(0, queue)
50 ZEND_ARG_INFO(0, msgtype)
51 ZEND_ARG_INFO(0, message)
52 ZEND_ARG_INFO(0, serialize)
53 ZEND_ARG_INFO(0, blocking)
54 ZEND_ARG_INFO(1, errorcode)
55 ZEND_END_ARG_INFO()
56
57 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_receive, 0, 0, 5)
58 ZEND_ARG_INFO(0, queue)
59 ZEND_ARG_INFO(0, desiredmsgtype)
60 ZEND_ARG_INFO(1, msgtype)
61 ZEND_ARG_INFO(0, maxsize)
62 ZEND_ARG_INFO(1, message)
63 ZEND_ARG_INFO(0, unserialize)
64 ZEND_ARG_INFO(0, flags)
65 ZEND_ARG_INFO(1, errorcode)
66 ZEND_END_ARG_INFO()
67
68 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_remove_queue, 0, 0, 1)
69 ZEND_ARG_INFO(0, queue)
70 ZEND_END_ARG_INFO()
71
72 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_stat_queue, 0, 0, 1)
73 ZEND_ARG_INFO(0, queue)
74 ZEND_END_ARG_INFO()
75
76 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_set_queue, 0, 0, 2)
77 ZEND_ARG_INFO(0, queue)
78 ZEND_ARG_INFO(0, data)
79 ZEND_END_ARG_INFO()
80
81 ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_queue_exists, 0, 0, 1)
82 ZEND_ARG_INFO(0, key)
83 ZEND_END_ARG_INFO()
84 /* }}} */
85
86 /* {{{ sysvmsg_functions[]
87 *
88 * Every user visible function must have an entry in sysvmsg_functions[].
89 */
90 const zend_function_entry sysvmsg_functions[] = {
91 PHP_FE(msg_get_queue, arginfo_msg_get_queue)
92 PHP_FE(msg_send, arginfo_msg_send)
93 PHP_FE(msg_receive, arginfo_msg_receive)
94 PHP_FE(msg_remove_queue, arginfo_msg_remove_queue)
95 PHP_FE(msg_stat_queue, arginfo_msg_stat_queue)
96 PHP_FE(msg_set_queue, arginfo_msg_set_queue)
97 PHP_FE(msg_queue_exists, arginfo_msg_queue_exists)
98 PHP_FE_END
99 };
100 /* }}} */
101
102 /* {{{ sysvmsg_module_entry
103 */
104 zend_module_entry sysvmsg_module_entry = {
105 STANDARD_MODULE_HEADER,
106 "sysvmsg",
107 sysvmsg_functions,
108 PHP_MINIT(sysvmsg),
109 NULL,
110 NULL,
111 NULL,
112 PHP_MINFO(sysvmsg),
113 NO_VERSION_YET,
114 STANDARD_MODULE_PROPERTIES
115 };
116 /* }}} */
117
118 #ifdef COMPILE_DL_SYSVMSG
ZEND_GET_MODULE(sysvmsg)119 ZEND_GET_MODULE(sysvmsg)
120 #endif
121
122 static void sysvmsg_release(zend_rsrc_list_entry *rsrc TSRMLS_DC)
123 {
124 sysvmsg_queue_t * mq = (sysvmsg_queue_t *) rsrc->ptr;
125 efree(mq);
126 }
127
128 /* {{{ PHP_MINIT_FUNCTION
129 */
PHP_MINIT_FUNCTION(sysvmsg)130 PHP_MINIT_FUNCTION(sysvmsg)
131 {
132 le_sysvmsg = zend_register_list_destructors_ex(sysvmsg_release, NULL, "sysvmsg queue", module_number);
133 REGISTER_LONG_CONSTANT("MSG_IPC_NOWAIT", PHP_MSG_IPC_NOWAIT, CONST_PERSISTENT|CONST_CS);
134 REGISTER_LONG_CONSTANT("MSG_EAGAIN", EAGAIN, CONST_PERSISTENT|CONST_CS);
135 REGISTER_LONG_CONSTANT("MSG_ENOMSG", ENOMSG, CONST_PERSISTENT|CONST_CS);
136 REGISTER_LONG_CONSTANT("MSG_NOERROR", PHP_MSG_NOERROR, CONST_PERSISTENT|CONST_CS);
137 REGISTER_LONG_CONSTANT("MSG_EXCEPT", PHP_MSG_EXCEPT, CONST_PERSISTENT|CONST_CS);
138 return SUCCESS;
139 }
140 /* }}} */
141
142 /* {{{ PHP_MINFO_FUNCTION
143 */
PHP_MINFO_FUNCTION(sysvmsg)144 PHP_MINFO_FUNCTION(sysvmsg)
145 {
146 php_info_print_table_start();
147 php_info_print_table_row(2, "sysvmsg support", "enabled");
148 php_info_print_table_row(2, "Revision", "$Id: 1e821e8a0cbb868efec453560ba303e04f3a1db2 $");
149 php_info_print_table_end();
150 }
151 /* }}} */
152
153 /* {{{ proto bool msg_set_queue(resource queue, array data)
154 Set information for a message queue */
PHP_FUNCTION(msg_set_queue)155 PHP_FUNCTION(msg_set_queue)
156 {
157 zval *queue, *data;
158 sysvmsg_queue_t *mq = NULL;
159 struct msqid_ds stat;
160
161 RETVAL_FALSE;
162
163 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ra", &queue, &data) == FAILURE) {
164 return;
165 }
166
167 ZEND_FETCH_RESOURCE(mq, sysvmsg_queue_t *, &queue, -1, "sysvmsg queue", le_sysvmsg);
168
169 if (msgctl(mq->id, IPC_STAT, &stat) == 0) {
170 zval **item;
171
172 /* now pull out members of data and set them in the stat buffer */
173 if (zend_hash_find(Z_ARRVAL_P(data), "msg_perm.uid", sizeof("msg_perm.uid"), (void **) &item) == SUCCESS) {
174 convert_to_long_ex(item);
175 stat.msg_perm.uid = Z_LVAL_PP(item);
176 }
177 if (zend_hash_find(Z_ARRVAL_P(data), "msg_perm.gid", sizeof("msg_perm.gid"), (void **) &item) == SUCCESS) {
178 convert_to_long_ex(item);
179 stat.msg_perm.gid = Z_LVAL_PP(item);
180 }
181 if (zend_hash_find(Z_ARRVAL_P(data), "msg_perm.mode", sizeof("msg_perm.mode"), (void **) &item) == SUCCESS) {
182 convert_to_long_ex(item);
183 stat.msg_perm.mode = Z_LVAL_PP(item);
184 }
185 if (zend_hash_find(Z_ARRVAL_P(data), "msg_qbytes", sizeof("msg_qbytes"), (void **) &item) == SUCCESS) {
186 convert_to_long_ex(item);
187 stat.msg_qbytes = Z_LVAL_PP(item);
188 }
189 if (msgctl(mq->id, IPC_SET, &stat) == 0) {
190 RETVAL_TRUE;
191 }
192 }
193 }
194 /* }}} */
195
196 /* {{{ proto array msg_stat_queue(resource queue)
197 Returns information about a message queue */
PHP_FUNCTION(msg_stat_queue)198 PHP_FUNCTION(msg_stat_queue)
199 {
200 zval *queue;
201 sysvmsg_queue_t *mq = NULL;
202 struct msqid_ds stat;
203
204 RETVAL_FALSE;
205
206 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &queue) == FAILURE) {
207 return;
208 }
209
210 ZEND_FETCH_RESOURCE(mq, sysvmsg_queue_t *, &queue, -1, "sysvmsg queue", le_sysvmsg);
211
212 if (msgctl(mq->id, IPC_STAT, &stat) == 0) {
213 array_init(return_value);
214
215 add_assoc_long(return_value, "msg_perm.uid", stat.msg_perm.uid);
216 add_assoc_long(return_value, "msg_perm.gid", stat.msg_perm.gid);
217 add_assoc_long(return_value, "msg_perm.mode", stat.msg_perm.mode);
218 add_assoc_long(return_value, "msg_stime", stat.msg_stime);
219 add_assoc_long(return_value, "msg_rtime", stat.msg_rtime);
220 add_assoc_long(return_value, "msg_ctime", stat.msg_ctime);
221 add_assoc_long(return_value, "msg_qnum", stat.msg_qnum);
222 add_assoc_long(return_value, "msg_qbytes", stat.msg_qbytes);
223 add_assoc_long(return_value, "msg_lspid", stat.msg_lspid);
224 add_assoc_long(return_value, "msg_lrpid", stat.msg_lrpid);
225 }
226 }
227 /* }}} */
228
229
230 /* {{{ proto bool msg_queue_exists(int key)
231 Check whether a message queue exists */
PHP_FUNCTION(msg_queue_exists)232 PHP_FUNCTION(msg_queue_exists)
233 {
234 long key;
235
236 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &key) == FAILURE) {
237 return;
238 }
239
240 if (msgget(key, 0) < 0) {
241 RETURN_FALSE;
242 }
243
244 RETURN_TRUE;
245 }
246 /* }}} */
247
248
249 /* {{{ proto resource msg_get_queue(int key [, int perms])
250 Attach to a message queue */
PHP_FUNCTION(msg_get_queue)251 PHP_FUNCTION(msg_get_queue)
252 {
253 long key;
254 long perms = 0666;
255 sysvmsg_queue_t *mq;
256
257 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|l", &key, &perms) == FAILURE) {
258 return;
259 }
260
261 mq = (sysvmsg_queue_t *) emalloc(sizeof(sysvmsg_queue_t));
262
263 mq->key = key;
264 mq->id = msgget(key, 0);
265 if (mq->id < 0) {
266 /* doesn't already exist; create it */
267 mq->id = msgget(key, IPC_CREAT | IPC_EXCL | perms);
268 if (mq->id < 0) {
269 php_error_docref(NULL TSRMLS_CC, E_WARNING, "failed for key 0x%lx: %s", key, strerror(errno));
270 efree(mq);
271 RETURN_FALSE;
272 }
273 }
274 RETVAL_RESOURCE(zend_list_insert(mq, le_sysvmsg TSRMLS_CC));
275 }
276 /* }}} */
277
278 /* {{{ proto bool msg_remove_queue(resource queue)
279 Destroy the queue */
PHP_FUNCTION(msg_remove_queue)280 PHP_FUNCTION(msg_remove_queue)
281 {
282 zval *queue;
283 sysvmsg_queue_t *mq = NULL;
284
285 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &queue) == FAILURE) {
286 return;
287 }
288
289 ZEND_FETCH_RESOURCE(mq, sysvmsg_queue_t *, &queue, -1, "sysvmsg queue", le_sysvmsg);
290
291 if (msgctl(mq->id, IPC_RMID, NULL) == 0) {
292 RETVAL_TRUE;
293 } else {
294 RETVAL_FALSE;
295 }
296 }
297 /* }}} */
298
299 /* {{{ proto mixed msg_receive(resource queue, int desiredmsgtype, int &msgtype, int maxsize, mixed message [, bool unserialize=true [, int flags=0 [, int errorcode]]])
300 Send a message of type msgtype (must be > 0) to a message queue */
PHP_FUNCTION(msg_receive)301 PHP_FUNCTION(msg_receive)
302 {
303 zval *out_message, *queue, *out_msgtype, *zerrcode = NULL;
304 long desiredmsgtype, maxsize, flags = 0;
305 long realflags = 0;
306 zend_bool do_unserialize = 1;
307 sysvmsg_queue_t *mq = NULL;
308 struct php_msgbuf *messagebuffer = NULL; /* buffer to transmit */
309 int result;
310
311 RETVAL_FALSE;
312
313 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rlzlz|blz",
314 &queue, &desiredmsgtype, &out_msgtype, &maxsize,
315 &out_message, &do_unserialize, &flags, &zerrcode) == FAILURE) {
316 return;
317 }
318
319 if (maxsize <= 0) {
320 php_error_docref(NULL TSRMLS_CC, E_WARNING, "maximum size of the message has to be greater than zero");
321 return;
322 }
323
324 if (flags != 0) {
325 if (flags & PHP_MSG_EXCEPT) {
326 #ifndef MSG_EXCEPT
327 php_error_docref(NULL TSRMLS_CC, E_WARNING, "MSG_EXCEPT is not supported on your system");
328 RETURN_FALSE;
329 #else
330 realflags |= MSG_EXCEPT;
331 #endif
332 }
333 if (flags & PHP_MSG_NOERROR) {
334 realflags |= MSG_NOERROR;
335 }
336 if (flags & PHP_MSG_IPC_NOWAIT) {
337 realflags |= IPC_NOWAIT;
338 }
339 }
340
341 ZEND_FETCH_RESOURCE(mq, sysvmsg_queue_t *, &queue, -1, "sysvmsg queue", le_sysvmsg);
342
343 messagebuffer = (struct php_msgbuf *) safe_emalloc(maxsize, 1, sizeof(struct php_msgbuf));
344
345 result = msgrcv(mq->id, messagebuffer, maxsize, desiredmsgtype, realflags);
346
347 zval_dtor(out_msgtype);
348 zval_dtor(out_message);
349 ZVAL_LONG(out_msgtype, 0);
350 ZVAL_FALSE(out_message);
351
352 if (zerrcode) {
353 zval_dtor(zerrcode);
354 ZVAL_LONG(zerrcode, 0);
355 }
356
357 if (result >= 0) {
358 /* got it! */
359 ZVAL_LONG(out_msgtype, messagebuffer->mtype);
360
361 RETVAL_TRUE;
362 if (do_unserialize) {
363 php_unserialize_data_t var_hash;
364 zval *tmp = NULL;
365 const unsigned char *p = (const unsigned char *) messagebuffer->mtext;
366
367 MAKE_STD_ZVAL(tmp);
368 PHP_VAR_UNSERIALIZE_INIT(var_hash);
369 if (!php_var_unserialize(&tmp, &p, p + result, &var_hash TSRMLS_CC)) {
370 php_error_docref(NULL TSRMLS_CC, E_WARNING, "message corrupted");
371 RETVAL_FALSE;
372 } else {
373 REPLACE_ZVAL_VALUE(&out_message, tmp, 0);
374 }
375 FREE_ZVAL(tmp);
376 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
377 } else {
378 ZVAL_STRINGL(out_message, messagebuffer->mtext, result, 1);
379 }
380 } else if (zerrcode) {
381 ZVAL_LONG(zerrcode, errno);
382 }
383 efree(messagebuffer);
384 }
385 /* }}} */
386
387 /* {{{ proto bool msg_send(resource queue, int msgtype, mixed message [, bool serialize=true [, bool blocking=true [, int errorcode]]])
388 Send a message of type msgtype (must be > 0) to a message queue */
PHP_FUNCTION(msg_send)389 PHP_FUNCTION(msg_send)
390 {
391 zval *message, *queue, *zerror=NULL;
392 long msgtype;
393 zend_bool do_serialize = 1, blocking = 1;
394 sysvmsg_queue_t * mq = NULL;
395 struct php_msgbuf * messagebuffer = NULL; /* buffer to transmit */
396 int result;
397 int message_len = 0;
398
399 RETVAL_FALSE;
400
401 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rlz|bbz",
402 &queue, &msgtype, &message, &do_serialize, &blocking, &zerror) == FAILURE) {
403 return;
404 }
405
406 ZEND_FETCH_RESOURCE(mq, sysvmsg_queue_t*, &queue, -1, "sysvmsg queue", le_sysvmsg);
407
408 if (do_serialize) {
409 smart_str msg_var = {0};
410 php_serialize_data_t var_hash;
411
412 PHP_VAR_SERIALIZE_INIT(var_hash);
413 php_var_serialize(&msg_var, &message, &var_hash TSRMLS_CC);
414 PHP_VAR_SERIALIZE_DESTROY(var_hash);
415
416 /* NB: php_msgbuf is 1 char bigger than a long, so there is no need to
417 * allocate the extra byte. */
418 messagebuffer = safe_emalloc(msg_var.len, 1, sizeof(struct php_msgbuf));
419 memcpy(messagebuffer->mtext, msg_var.c, msg_var.len + 1);
420 message_len = msg_var.len;
421 smart_str_free(&msg_var);
422 } else {
423 char *p;
424 switch (Z_TYPE_P(message)) {
425 case IS_STRING:
426 p = Z_STRVAL_P(message);
427 message_len = Z_STRLEN_P(message);
428 break;
429
430 case IS_LONG:
431 case IS_BOOL:
432 message_len = spprintf(&p, 0, "%ld", Z_LVAL_P(message));
433 break;
434
435 case IS_DOUBLE:
436 message_len = spprintf(&p, 0, "%F", Z_DVAL_P(message));
437 break;
438
439 default:
440 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Message parameter must be either a string or a number.");
441 RETURN_FALSE;
442 }
443
444 messagebuffer = safe_emalloc(message_len, 1, sizeof(struct php_msgbuf));
445 memcpy(messagebuffer->mtext, p, message_len + 1);
446
447 if (Z_TYPE_P(message) != IS_STRING) {
448 efree(p);
449 }
450 }
451
452 /* set the message type */
453 messagebuffer->mtype = msgtype;
454
455 result = msgsnd(mq->id, messagebuffer, message_len, blocking ? 0 : IPC_NOWAIT);
456
457 efree(messagebuffer);
458
459 if (result == -1) {
460 php_error_docref(NULL TSRMLS_CC, E_WARNING, "msgsnd failed: %s", strerror(errno));
461 if (zerror) {
462 ZVAL_LONG(zerror, errno);
463 }
464 } else {
465 RETVAL_TRUE;
466 }
467 }
468 /* }}} */
469
470 /*
471 * Local variables:
472 * tab-width: 4
473 * c-basic-offset: 4
474 * End:
475 * vim600: noet sw=4 ts=4 tw=78 fdm=marker
476 * vim<600: noet sw=4 ts=4 tw=78
477 */
478
