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winutil.c
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winutil.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2013 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: Zeev Suraski <zeev@zend.com> |
* Pierre Joye <pierre@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include <wincrypt.h>
PHPAPI char *php_win32_error_to_msg(int error)
{
char *buf = NULL;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&buf, 0, NULL
);
return (buf ? (char *) buf : "");
}
int php_win32_check_trailing_space(const char * path, const int path_len) {
if (path_len < 1) {
return 1;
}
if (path) {
if (path[0] == ' ' || path[path_len - 1] == ' ') {
return 0;
} else {
return 1;
}
} else {
return 0;
}
}
HCRYPTPROV hCryptProv;
unsigned int has_crypto_ctx = 0;
#ifdef ZTS
MUTEX_T php_lock_win32_cryptoctx;
void php_win32_init_rng_lock()
{
php_lock_win32_cryptoctx = tsrm_mutex_alloc();
}
void php_win32_free_rng_lock()
{
tsrm_mutex_lock(php_lock_win32_cryptoctx);
if (has_crypto_ctx == 1) {
CryptReleaseContext(hCryptProv, 0);
has_crypto_ctx = 0;
}
tsrm_mutex_unlock(php_lock_win32_cryptoctx);
tsrm_mutex_free(php_lock_win32_cryptoctx);
}
#else
#define php_win32_init_rng_lock();
#define php_win32_free_rng_lock();
#endif
PHPAPI int php_win32_get_random_bytes(unsigned char *buf, size_t size) { /* {{{ */
unsigned int has_contextg = 0;
BOOL ret;
size_t i = 0;
#ifdef ZTS
tsrm_mutex_lock(php_lock_win32_cryptoctx);
#endif
if (has_crypto_ctx == 0) {
/* CRYPT_VERIFYCONTEXT > only hashing&co-like use, no need to acces prv keys */
if (!CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET|CRYPT_VERIFYCONTEXT )) {
/* Could mean that the key container does not exist, let try
again by asking for a new one. If it fails here, it surely means that the user running
this process does not have the permission(s) to use this container.
*/
if (GetLastError() == NTE_BAD_KEYSET) {
if (CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET | CRYPT_VERIFYCONTEXT )) {
has_crypto_ctx = 1;
} else {
has_crypto_ctx = 0;
}
}
} else {
has_crypto_ctx = 1;
}
}
#ifdef ZTS
tsrm_mutex_unlock(php_lock_win32_cryptoctx);
#endif
if (has_crypto_ctx == 0) {
return FAILURE;
}
ret = CryptGenRandom(hCryptProv, size, buf);
if (ret) {
return SUCCESS;
} else {
return FAILURE;
}
}
/* }}} */