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|
/*
+----------------------------------------------------------------------+
| PHP HTML Embedded Scripting Language Version 3.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997,1998 PHP Development Team (See Credits file) |
+----------------------------------------------------------------------+
| This program is free software; you can redistribute it and/or modify |
| it under the terms of one of the following licenses: |
| |
| A) the GNU General Public License as published by the Free Software |
| Foundation; either version 2 of the License, or (at your option) |
| any later version. |
| |
| B) the PHP License as published by the PHP Development Team and |
| included in the distribution in the file: LICENSE |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of both licenses referred to here. |
| If you did not, or have any questions about PHP licensing, please |
| contact core@php.net. |
+----------------------------------------------------------------------+
| Author: Stig Sæther Bakken <ssb@guardian.no> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef THREAD_SAFE
#include "tls.h"
#endif
#include "php.h"
#include <stdlib.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <errno.h>
#include <stdio.h>
#if MSVC5
#include "win32/time.h"
#else
#include <sys/time.h>
#endif
#include "uniqid.h"
/* {{{ proto string uniqid(string prefix)
Generate a unique id */
void php3_uniqid(INTERNAL_FUNCTION_PARAMETERS)
{
#ifdef HAVE_GETTIMEOFDAY
pval *prefix;
char uniqid[128];
int sec, usec;
struct timeval tv;
TLS_VARS;
if (ARG_COUNT(ht) != 1 || getParameters(ht,1,&prefix)==FAILURE) {
WRONG_PARAM_COUNT;
}
convert_to_string(prefix);
/* Do some bounds checking since we are using a char array. */
if (strlen(prefix->value.str.val) > 114) {
php3_error(E_WARNING, "The prefix to uniqid should not be more than 114 characters.");
return;
}
/* dont need this on windows so lets not do it*/
#if HAVE_USLEEP && !(WIN32|WINNT)
usleep(1);
#endif
gettimeofday((struct timeval *) &tv, (struct timezone *) NULL);
sec = (int) tv.tv_sec;
usec = (int) (tv.tv_usec % 1000000);
/* The max value usec can have is 0xF423F, so we use only five hex
* digits for usecs:
*/
sprintf(uniqid, "%s%08x%05x", prefix->value.str.val, sec, usec);
RETURN_STRING(uniqid,1);
#endif
}
/* }}} */
function_entry uniqid_functions[] = {
{"uniqid", php3_uniqid, NULL},
{NULL, NULL, NULL}
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
|
