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|
/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.0 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_0.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. |
+----------------------------------------------------------------------+
| Authors: Stig Bakken <ssb@gaurdian.no> |
| Zeev Suraski <zeev@zend.com> |
| Rasmus Lerdorf <rasmus@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include <stdlib.h>
#include "php.h"
#if HAVE_CRYPT
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_CRYPT_H
#include <crypt.h>
#endif
#if TM_IN_SYS_TIME
#include <sys/time.h>
#else
#include <time.h>
#endif
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#ifdef PHP_WIN32
#include <process.h>
extern char *crypt(char *__key, char *__salt);
#endif
#include "php_lcg.h"
#include "php_crypt.h"
#include "php_rand.h"
/*
The capabilities of the crypt() function is determined by the test programs
run by configure from aclocal.m4. They will set PHP_STD_DES_CRYPT,
PHP_EXT_DES_CRYPT, PHP_MD5_CRYPT and PHP_BLOWFISH_CRYPT as appropriate
for the target platform
*/
#if PHP_STD_DES_CRYPT
#define PHP_MAX_SALT_LEN 2
#endif
#if PHP_EXT_DES_CRYPT
#undef PHP_MAX_SALT_LEN
#define PHP_MAX_SALT_LEN 9
#endif
#if PHP_MD5_CRYPT
#undef PHP_MAX_SALT_LEN
#define PHP_MAX_SALT_LEN 12
#endif
#if PHP_BLOWFISH_CRYPT
#undef PHP_MAX_SALT_LEN
#define PHP_MAX_SALT_LEN 60
#endif
/*
* If the configure-time checks fail, we provide DES.
* XXX: This is a hack. Fix the real problem
*/
#ifndef PHP_MAX_SALT_LEN
#define PHP_MAX_SALT_LEN 2
#undef PHP_STD_DES_CRYPT
#define PHP_STD_DES_CRYPT 1
#endif
#define PHP_CRYPT_RAND php_rand(TSRMLS_C)
static int php_crypt_rand_seeded=0;
PHP_MINIT_FUNCTION(crypt)
{
REGISTER_LONG_CONSTANT("CRYPT_SALT_LENGTH", PHP_MAX_SALT_LEN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CRYPT_STD_DES", PHP_STD_DES_CRYPT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CRYPT_EXT_DES", PHP_EXT_DES_CRYPT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CRYPT_MD5", PHP_MD5_CRYPT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CRYPT_BLOWFISH", PHP_BLOWFISH_CRYPT, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
PHP_RINIT_FUNCTION(crypt)
{
if(!php_crypt_rand_seeded) {
php_srand(time(0) * getpid() * (unsigned long) (php_combined_lcg(TSRMLS_C) * 10000.0) TSRMLS_CC);
php_crypt_rand_seeded=1;
}
return SUCCESS;
}
static unsigned char itoa64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
static void php_to64(char *s, long v, int n)
{
while (--n >= 0) {
*s++ = itoa64[v&0x3f];
v >>= 6;
}
}
/* {{{ proto string crypt(string str [, string salt])
Encrypt a string */
PHP_FUNCTION(crypt)
{
char salt[PHP_MAX_SALT_LEN+1];
char *str, *salt_in = NULL;
int str_len, salt_in_len;
salt[0]=salt[PHP_MAX_SALT_LEN]='\0';
/* This will produce suitable results if people depend on DES-encryption
available (passing always 2-character salt). At least for glibc6.1 */
memset(&salt[1], '$', PHP_MAX_SALT_LEN-1);
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|s", &str, &str_len,
&salt_in, &salt_in_len) == FAILURE) {
return;
}
if (salt_in) {
memcpy(salt, salt_in, MIN(PHP_MAX_SALT_LEN, salt_in_len));
}
/* The automatic salt generation only covers standard DES and md5-crypt */
if(!*salt) {
#if PHP_MD5_CRYPT
strcpy(salt, "$1$");
php_to64(&salt[3], PHP_CRYPT_RAND, 4);
php_to64(&salt[7], PHP_CRYPT_RAND, 4);
strcpy(&salt[11], "$");
#elif PHP_STD_DES_CRYPT
php_to64(&salt[0], PHP_CRYPT_RAND, 2);
salt[2] = '\0';
#endif
}
RETVAL_STRING(crypt(str, salt), 1);
}
/* }}} */
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
|
