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siphash.c
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siphash.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 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: |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_siphash.h"
#include "siphash-impl.h"
#ifndef WORDS_BIGENDIAN
# include <arpa/inet.h>
#endif
const zend_function_entry siphash_functions[] = {
PHP_FE(sip_hash, NULL)
PHP_FE(sip_hash32, NULL)
#ifdef PHP_FE_END
PHP_FE_END
#else
{ NULL, NULL, NULL }
#endif
};
/* {{{ siphash_module_entry
*/
zend_module_entry siphash_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#endif
"siphash",
siphash_functions,
PHP_MINIT(siphash),
PHP_MSHUTDOWN(siphash),
NULL,
NULL,
PHP_MINFO(siphash),
#if ZEND_MODULE_API_NO >= 20010901
"1.0",
#endif
STANDARD_MODULE_PROPERTIES
};
/* }}} */
#ifdef COMPILE_DL_SIPHASH
ZEND_GET_MODULE(siphash)
#endif
/* {{{ PHP_MINIT_FUNCTION
*/
PHP_MINIT_FUNCTION(siphash)
{
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION
*/
PHP_MSHUTDOWN_FUNCTION(siphash)
{
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION
*/
PHP_MINFO_FUNCTION(siphash)
{
php_info_print_table_start();
php_info_print_table_header(2, "siphash support", "enabled");
php_info_print_table_end();
}
/* }}} */
PHP_FUNCTION(sip_hash)
{
char *key = NULL;
char *message = NULL;
uint64_t hash;
int key_size;
int message_size;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss",
&key, &key_size,
&message, &message_size) == FAILURE) {
return;
}
if (key_size != 16) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Bad key length");
RETURN_FALSE;
}
if (message_size < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Empty message");
RETURN_FALSE;
}
hash = siphash((unsigned char *) key,
(const unsigned char *) message, (size_t) message_size);
#ifdef WORDS_BIGENDIAN
hash = (((uint64_t) htonl((uint32_t) hash)) << 32) |
htonl((uint32_t) (hash >> 32));
#endif
RETURN_STRINGL((void *) &hash, sizeof hash, 1);
}
PHP_FUNCTION(sip_hash32)
{
char *key = NULL;
char *message = NULL;
uint64_t hash;
long hash32;
int key_size;
int message_size;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss",
&key, &key_size,
&message, &message_size) == FAILURE) {
return;
}
if (key_size != 16) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Bad key length");
RETURN_FALSE;
}
if (message_size < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Empty message");
RETURN_FALSE;
}
hash = siphash((unsigned char *) key,
(const unsigned char *) message, (size_t) message_size);
hash32 = (long) (hash & 0xFFFFFFFF);
RETURN_LONG(hash32);
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/