1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Zeev Suraski <zeev@zend.com> |
16 * Pierre Joye <pierre@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 /* $Id$ */
21
22 #include "php.h"
23 #include <wincrypt.h>
24
25 PHPAPI char *php_win32_error_to_msg(HRESULT error)
26 {
27 char *buf = NULL;
28
29 FormatMessage(
30 FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
31 NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&buf, 0, NULL
32 );
33
34 return (buf ? (char *) buf : "");
35 }
36
37 int php_win32_check_trailing_space(const char * path, const int path_len) {
38 if (path_len < 1) {
39 return 1;
40 }
41 if (path) {
42 if (path[0] == ' ' || path[path_len - 1] == ' ') {
43 return 0;
44 } else {
45 return 1;
46 }
47 } else {
48 return 0;
49 }
50 }
51
52 HCRYPTPROV hCryptProv;
53 unsigned int has_crypto_ctx = 0;
54
55 #ifdef ZTS
56 MUTEX_T php_lock_win32_cryptoctx;
57 void php_win32_init_rng_lock()
58 {
59 php_lock_win32_cryptoctx = tsrm_mutex_alloc();
60 }
61
62 void php_win32_free_rng_lock()
63 {
64 tsrm_mutex_lock(php_lock_win32_cryptoctx);
65 if (has_crypto_ctx == 1) {
66 CryptReleaseContext(hCryptProv, 0);
67 has_crypto_ctx = 0;
68 }
69 tsrm_mutex_unlock(php_lock_win32_cryptoctx);
70 tsrm_mutex_free(php_lock_win32_cryptoctx);
71
72 }
73 #else
74 #define php_win32_init_rng_lock();
75 #define php_win32_free_rng_lock();
76 #endif
77
78
79
80 PHPAPI int php_win32_get_random_bytes(unsigned char *buf, size_t size) { /* {{{ */
81
82 BOOL ret;
83
84 #ifdef ZTS
85 tsrm_mutex_lock(php_lock_win32_cryptoctx);
86 #endif
87
88 if (has_crypto_ctx == 0) {
89 /* CRYPT_VERIFYCONTEXT > only hashing&co-like use, no need to acces prv keys */
90 if (!CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET|CRYPT_VERIFYCONTEXT )) {
91 /* Could mean that the key container does not exist, let try
92 again by asking for a new one. If it fails here, it surely means that the user running
93 this process does not have the permission(s) to use this container.
94 */
95 if (GetLastError() == NTE_BAD_KEYSET) {
96 if (CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET | CRYPT_VERIFYCONTEXT )) {
97 has_crypto_ctx = 1;
98 } else {
99 has_crypto_ctx = 0;
100 }
101 }
102 } else {
103 has_crypto_ctx = 1;
104 }
105 }
106
107 #ifdef ZTS
108 tsrm_mutex_unlock(php_lock_win32_cryptoctx);
109 #endif
110
111 if (has_crypto_ctx == 0) {
112 return FAILURE;
113 }
114
115 /* XXX should go in the loop if size exceeds UINT_MAX */
116 ret = CryptGenRandom(hCryptProv, (DWORD)size, buf);
117
118 if (ret) {
119 return SUCCESS;
120 } else {
121 return FAILURE;
122 }
123 }
124 /* }}} */
125
126 /*
127 * Local variables:
128 * tab-width: 4
129 * c-basic-offset: 4
130 * End:
131 * vim600: sw=4 ts=4 fdm=marker
132 * vim<600: sw=4 ts=4
133 */