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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_globals.h"
#include "ext/standard/info.h"
#include "php_sysvmsg.h"
#include "ext/standard/php_var.h"
#include "zend_smart_str.h"
/* In order to detect MSG_EXCEPT use at run time; we have no way
* of knowing what the bit definitions are, so we can't just define
* out own MSG_EXCEPT value. */
#define PHP_MSG_IPC_NOWAIT 1
#define PHP_MSG_NOERROR 2
#define PHP_MSG_EXCEPT 4
/* True global resources - no need for thread safety here */
static int le_sysvmsg;
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_get_queue, 0, 0, 1)
ZEND_ARG_INFO(0, key)
ZEND_ARG_INFO(0, perms)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_send, 0, 0, 3)
ZEND_ARG_INFO(0, queue)
ZEND_ARG_INFO(0, msgtype)
ZEND_ARG_INFO(0, message)
ZEND_ARG_INFO(0, serialize)
ZEND_ARG_INFO(0, blocking)
ZEND_ARG_INFO(1, errorcode)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_receive, 0, 0, 5)
ZEND_ARG_INFO(0, queue)
ZEND_ARG_INFO(0, desiredmsgtype)
ZEND_ARG_INFO(1, msgtype)
ZEND_ARG_INFO(0, maxsize)
ZEND_ARG_INFO(1, message)
ZEND_ARG_INFO(0, unserialize)
ZEND_ARG_INFO(0, flags)
ZEND_ARG_INFO(1, errorcode)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_remove_queue, 0, 0, 1)
ZEND_ARG_INFO(0, queue)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_stat_queue, 0, 0, 1)
ZEND_ARG_INFO(0, queue)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_set_queue, 0, 0, 2)
ZEND_ARG_INFO(0, queue)
ZEND_ARG_INFO(0, data)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_msg_queue_exists, 0, 0, 1)
ZEND_ARG_INFO(0, key)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ sysvmsg_functions[]
*
* Every user visible function must have an entry in sysvmsg_functions[].
*/
const zend_function_entry sysvmsg_functions[] = {
PHP_FE(msg_get_queue, arginfo_msg_get_queue)
PHP_FE(msg_send, arginfo_msg_send)
PHP_FE(msg_receive, arginfo_msg_receive)
PHP_FE(msg_remove_queue, arginfo_msg_remove_queue)
PHP_FE(msg_stat_queue, arginfo_msg_stat_queue)
PHP_FE(msg_set_queue, arginfo_msg_set_queue)
PHP_FE(msg_queue_exists, arginfo_msg_queue_exists)
PHP_FE_END
};
/* }}} */
/* {{{ sysvmsg_module_entry
*/
zend_module_entry sysvmsg_module_entry = {
STANDARD_MODULE_HEADER,
"sysvmsg",
sysvmsg_functions,
PHP_MINIT(sysvmsg),
NULL,
NULL,
NULL,
PHP_MINFO(sysvmsg),
PHP_SYSVMSG_VERSION,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_SYSVMSG
ZEND_GET_MODULE(sysvmsg)
#endif
static void sysvmsg_release(zend_resource *rsrc)
{
sysvmsg_queue_t *mq = (sysvmsg_queue_t *) rsrc->ptr;
efree(mq);
}
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(sysvmsg)
{
le_sysvmsg = zend_register_list_destructors_ex(sysvmsg_release, NULL, "sysvmsg queue", module_number);
REGISTER_LONG_CONSTANT("MSG_IPC_NOWAIT", PHP_MSG_IPC_NOWAIT, CONST_PERSISTENT|CONST_CS);
REGISTER_LONG_CONSTANT("MSG_EAGAIN", EAGAIN, CONST_PERSISTENT|CONST_CS);
REGISTER_LONG_CONSTANT("MSG_ENOMSG", ENOMSG, CONST_PERSISTENT|CONST_CS);
REGISTER_LONG_CONSTANT("MSG_NOERROR", PHP_MSG_NOERROR, CONST_PERSISTENT|CONST_CS);
REGISTER_LONG_CONSTANT("MSG_EXCEPT", PHP_MSG_EXCEPT, CONST_PERSISTENT|CONST_CS);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(sysvmsg)
{
php_info_print_table_start();
php_info_print_table_row(2, "sysvmsg support", "enabled");
php_info_print_table_row(2, "Revision", "$Id$");
php_info_print_table_end();
}
/* }}} */
/* {{{ proto bool msg_set_queue(resource queue, array data)
Set information for a message queue */
PHP_FUNCTION(msg_set_queue)
{
zval *queue, *data;
sysvmsg_queue_t *mq = NULL;
struct msqid_ds stat;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ra", &queue, &data) == FAILURE) {
return;
}
if ((mq = (sysvmsg_queue_t *)zend_fetch_resource(Z_RES_P(queue), "sysvmsg queue", le_sysvmsg)) == NULL) {
RETURN_FALSE;
}
if (msgctl(mq->id, IPC_STAT, &stat) == 0) {
zval *item;
/* now pull out members of data and set them in the stat buffer */
if ((item = zend_hash_str_find(Z_ARRVAL_P(data), "msg_perm.uid", sizeof("msg_perm.uid") - 1)) != NULL) {
convert_to_long_ex(item);
stat.msg_perm.uid = Z_LVAL_P(item);
}
if ((item = zend_hash_str_find(Z_ARRVAL_P(data), "msg_perm.gid", sizeof("msg_perm.gid") - 1)) != NULL) {
convert_to_long_ex(item);
stat.msg_perm.gid = Z_LVAL_P(item);
}
if ((item = zend_hash_str_find(Z_ARRVAL_P(data), "msg_perm.mode", sizeof("msg_perm.mode") - 1)) != NULL) {
convert_to_long_ex(item);
stat.msg_perm.mode = Z_LVAL_P(item);
}
if ((item = zend_hash_str_find(Z_ARRVAL_P(data), "msg_qbytes", sizeof("msg_qbytes") - 1)) != NULL) {
convert_to_long_ex(item);
stat.msg_qbytes = Z_LVAL_P(item);
}
if (msgctl(mq->id, IPC_SET, &stat) == 0) {
RETVAL_TRUE;
}
}
}
/* }}} */
/* {{{ proto array msg_stat_queue(resource queue)
Returns information about a message queue */
PHP_FUNCTION(msg_stat_queue)
{
zval *queue;
sysvmsg_queue_t *mq = NULL;
struct msqid_ds stat;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &queue) == FAILURE) {
return;
}
if ((mq = (sysvmsg_queue_t *)zend_fetch_resource(Z_RES_P(queue), "sysvmsg queue", le_sysvmsg)) == NULL) {
RETURN_FALSE;
}
if (msgctl(mq->id, IPC_STAT, &stat) == 0) {
array_init(return_value);
add_assoc_long(return_value, "msg_perm.uid", stat.msg_perm.uid);
add_assoc_long(return_value, "msg_perm.gid", stat.msg_perm.gid);
add_assoc_long(return_value, "msg_perm.mode", stat.msg_perm.mode);
add_assoc_long(return_value, "msg_stime", stat.msg_stime);
add_assoc_long(return_value, "msg_rtime", stat.msg_rtime);
add_assoc_long(return_value, "msg_ctime", stat.msg_ctime);
add_assoc_long(return_value, "msg_qnum", stat.msg_qnum);
add_assoc_long(return_value, "msg_qbytes", stat.msg_qbytes);
add_assoc_long(return_value, "msg_lspid", stat.msg_lspid);
add_assoc_long(return_value, "msg_lrpid", stat.msg_lrpid);
}
}
/* }}} */
/* {{{ proto bool msg_queue_exists(int key)
Check whether a message queue exists */
PHP_FUNCTION(msg_queue_exists)
{
zend_long key;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &key) == FAILURE) {
return;
}
if (msgget(key, 0) < 0) {
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
/* {{{ proto resource msg_get_queue(int key [, int perms])
Attach to a message queue */
PHP_FUNCTION(msg_get_queue)
{
zend_long key;
zend_long perms = 0666;
sysvmsg_queue_t *mq;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "l|l", &key, &perms) == FAILURE) {
return;
}
mq = (sysvmsg_queue_t *) emalloc(sizeof(sysvmsg_queue_t));
mq->key = key;
mq->id = msgget(key, 0);
if (mq->id < 0) {
/* doesn't already exist; create it */
mq->id = msgget(key, IPC_CREAT | IPC_EXCL | perms);
if (mq->id < 0) {
php_error_docref(NULL, E_WARNING, "failed for key 0x" ZEND_XLONG_FMT ": %s", key, strerror(errno));
efree(mq);
RETURN_FALSE;
}
}
ZVAL_COPY_VALUE(return_value, zend_list_insert(mq, le_sysvmsg));
}
/* }}} */
/* {{{ proto bool msg_remove_queue(resource queue)
Destroy the queue */
PHP_FUNCTION(msg_remove_queue)
{
zval *queue;
sysvmsg_queue_t *mq = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &queue) == FAILURE) {
return;
}
if ((mq = (sysvmsg_queue_t *)zend_fetch_resource(Z_RES_P(queue), "sysvmsg queue", le_sysvmsg)) == NULL) {
RETURN_FALSE;
}
if (msgctl(mq->id, IPC_RMID, NULL) == 0) {
RETVAL_TRUE;
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ proto mixed msg_receive(resource queue, int desiredmsgtype, int &msgtype, int maxsize, mixed message [, bool unserialize=true [, int flags=0 [, int errorcode]]])
Send a message of type msgtype (must be > 0) to a message queue */
PHP_FUNCTION(msg_receive)
{
zval *out_message, *queue, *out_msgtype, *zerrcode = NULL;
zend_long desiredmsgtype, maxsize, flags = 0;
zend_long realflags = 0;
zend_bool do_unserialize = 1;
sysvmsg_queue_t *mq = NULL;
struct php_msgbuf *messagebuffer = NULL; /* buffer to transmit */
int result;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "rlz/lz/|blz/",
&queue, &desiredmsgtype, &out_msgtype, &maxsize,
&out_message, &do_unserialize, &flags, &zerrcode) == FAILURE) {
return;
}
if (maxsize <= 0) {
php_error_docref(NULL, E_WARNING, "maximum size of the message has to be greater than zero");
return;
}
if (flags != 0) {
if (flags & PHP_MSG_EXCEPT) {
#ifndef MSG_EXCEPT
php_error_docref(NULL, E_WARNING, "MSG_EXCEPT is not supported on your system");
RETURN_FALSE;
#else
realflags |= MSG_EXCEPT;
#endif
}
if (flags & PHP_MSG_NOERROR) {
realflags |= MSG_NOERROR;
}
if (flags & PHP_MSG_IPC_NOWAIT) {
realflags |= IPC_NOWAIT;
}
}
if ((mq = (sysvmsg_queue_t *)zend_fetch_resource(Z_RES_P(queue), "sysvmsg queue", le_sysvmsg)) == NULL) {
RETURN_FALSE;
}
messagebuffer = (struct php_msgbuf *) safe_emalloc(maxsize, 1, sizeof(struct php_msgbuf));
result = msgrcv(mq->id, messagebuffer, maxsize, desiredmsgtype, realflags);
zval_dtor(out_msgtype);
zval_dtor(out_message);
ZVAL_LONG(out_msgtype, 0);
ZVAL_FALSE(out_message);
if (zerrcode) {
ZVAL_DEREF(zerrcode);
zval_dtor(zerrcode);
ZVAL_LONG(zerrcode, 0);
}
if (result >= 0) {
/* got it! */
ZVAL_LONG(out_msgtype, messagebuffer->mtype);
RETVAL_TRUE;
if (do_unserialize) {
php_unserialize_data_t var_hash;
zval tmp;
const unsigned char *p = (const unsigned char *) messagebuffer->mtext;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
if (!php_var_unserialize(&tmp, &p, p + result, &var_hash)) {
php_error_docref(NULL, E_WARNING, "message corrupted");
RETVAL_FALSE;
} else {
ZVAL_COPY_VALUE(out_message, &tmp);
}
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
} else {
ZVAL_STRINGL(out_message, messagebuffer->mtext, result);
}
} else if (zerrcode) {
ZVAL_LONG(zerrcode, errno);
}
efree(messagebuffer);
}
/* }}} */
/* {{{ proto bool msg_send(resource queue, int msgtype, mixed message [, bool serialize=true [, bool blocking=true [, int errorcode]]])
Send a message of type msgtype (must be > 0) to a message queue */
PHP_FUNCTION(msg_send)
{
zval *message, *queue, *zerror=NULL;
zend_long msgtype;
zend_bool do_serialize = 1, blocking = 1;
sysvmsg_queue_t * mq = NULL;
struct php_msgbuf * messagebuffer = NULL; /* buffer to transmit */
int result;
int message_len = 0;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "rlz|bbz/",
&queue, &msgtype, &message, &do_serialize, &blocking, &zerror) == FAILURE) {
return;
}
if ((mq = (sysvmsg_queue_t *)zend_fetch_resource(Z_RES_P(queue), "sysvmsg queue", le_sysvmsg)) == NULL) {
RETURN_FALSE;
}
if (do_serialize) {
smart_str msg_var = {0};
php_serialize_data_t var_hash;
PHP_VAR_SERIALIZE_INIT(var_hash);
php_var_serialize(&msg_var, message, &var_hash);
PHP_VAR_SERIALIZE_DESTROY(var_hash);
/* NB: php_msgbuf is 1 char bigger than a long, so there is no need to
* allocate the extra byte. */
messagebuffer = safe_emalloc(ZSTR_LEN(msg_var.s), 1, sizeof(struct php_msgbuf));
memcpy(messagebuffer->mtext, ZSTR_VAL(msg_var.s), ZSTR_LEN(msg_var.s) + 1);
message_len = ZSTR_LEN(msg_var.s);
smart_str_free(&msg_var);
} else {
char *p;
switch (Z_TYPE_P(message)) {
case IS_STRING:
p = Z_STRVAL_P(message);
message_len = Z_STRLEN_P(message);
break;
case IS_LONG:
message_len = spprintf(&p, 0, ZEND_LONG_FMT, Z_LVAL_P(message));
break;
case IS_FALSE:
message_len = spprintf(&p, 0, "0");
break;
case IS_TRUE:
message_len = spprintf(&p, 0, "1");
break;
case IS_DOUBLE:
message_len = spprintf(&p, 0, "%F", Z_DVAL_P(message));
break;
default:
php_error_docref(NULL, E_WARNING, "Message parameter must be either a string or a number.");
RETURN_FALSE;
}
messagebuffer = safe_emalloc(message_len, 1, sizeof(struct php_msgbuf));
memcpy(messagebuffer->mtext, p, message_len + 1);
if (Z_TYPE_P(message) != IS_STRING) {
efree(p);
}
}
/* set the message type */
messagebuffer->mtype = msgtype;
result = msgsnd(mq->id, messagebuffer, message_len, blocking ? 0 : IPC_NOWAIT);
efree(messagebuffer);
if (result == -1) {
php_error_docref(NULL, E_WARNING, "msgsnd failed: %s", strerror(errno));
if (zerror) {
ZVAL_LONG(zerror, errno);
}
} else {
RETVAL_TRUE;
}
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 tw=78 fdm=marker
* vim<600: noet sw=4 ts=4 tw=78
*/