1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 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. |
+----------------------------------------------------------------------+
| Authors: Stig Bakken <ssb@php.net> |
| Zeev Suraski <zeev@zend.com> |
| Rasmus Lerdorf <rasmus@php.net> |
| Pierre Joye <pierre@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include <stdlib.h>
#include "php.h"
#if HAVE_CRYPT
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if PHP_USE_PHP_CRYPT_R
# include "php_crypt_r.h"
# include "crypt_freesec.h"
#else
# if HAVE_CRYPT_H
# if defined(CRYPT_R_GNU_SOURCE) && !defined(_GNU_SOURCE)
# define _GNU_SOURCE
# endif
# include <crypt.h>
# endif
#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>
#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 PHP_SHA512_CRYPT
#undef PHP_MAX_SALT_LEN
#define PHP_MAX_SALT_LEN 123
#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)
PHP_MINIT_FUNCTION(crypt) /* {{{ */
{
REGISTER_INT_CONSTANT("CRYPT_SALT_LENGTH", PHP_MAX_SALT_LEN, CONST_CS | CONST_PERSISTENT);
REGISTER_INT_CONSTANT("CRYPT_STD_DES", PHP_STD_DES_CRYPT, CONST_CS | CONST_PERSISTENT);
REGISTER_INT_CONSTANT("CRYPT_EXT_DES", PHP_EXT_DES_CRYPT, CONST_CS | CONST_PERSISTENT);
REGISTER_INT_CONSTANT("CRYPT_MD5", PHP_MD5_CRYPT, CONST_CS | CONST_PERSISTENT);
REGISTER_INT_CONSTANT("CRYPT_BLOWFISH", PHP_BLOWFISH_CRYPT, CONST_CS | CONST_PERSISTENT);
#ifdef PHP_SHA256_CRYPT
REGISTER_INT_CONSTANT("CRYPT_SHA256", PHP_SHA256_CRYPT, CONST_CS | CONST_PERSISTENT);
#endif
#ifdef PHP_SHA512_CRYPT
REGISTER_INT_CONSTANT("CRYPT_SHA512", PHP_SHA512_CRYPT, CONST_CS | CONST_PERSISTENT);
#endif
#if PHP_USE_PHP_CRYPT_R
php_init_crypt_r();
#endif
return SUCCESS;
}
/* }}} */
PHP_MSHUTDOWN_FUNCTION(crypt) /* {{{ */
{
#if PHP_USE_PHP_CRYPT_R
php_shutdown_crypt_r();
#endif
return SUCCESS;
}
/* }}} */
static unsigned char itoa64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
static void php_to64(char *s, php_int_t v, int n) /* {{{ */
{
while (--n >= 0) {
*s++ = itoa64[v&0x3f];
v >>= 6;
}
}
/* }}} */
PHPAPI zend_string *php_crypt(const char *password, const int pass_len, const char *salt, int salt_len)
{
char *crypt_res;
zend_string *result;
/* Windows (win32/crypt) has a stripped down version of libxcrypt and
a CryptoApi md5_crypt implementation */
#if PHP_USE_PHP_CRYPT_R
{
struct php_crypt_extended_data buffer;
if (salt[0]=='$' && salt[1]=='1' && salt[2]=='$') {
char output[MD5_HASH_MAX_LEN], *out;
out = php_md5_crypt_r(password, salt, output);
if (out) {
return STR_INIT(out, strlen(out), 0);
}
return NULL;
} else if (salt[0]=='$' && salt[1]=='6' && salt[2]=='$') {
char *output;
output = emalloc(PHP_MAX_SALT_LEN);
crypt_res = php_sha512_crypt_r(password, salt, output, PHP_MAX_SALT_LEN);
if (!crypt_res) {
memset(output, 0, PHP_MAX_SALT_LEN);
efree(output);
return NULL;
} else {
result = STR_INIT(output, strlen(output), 0);
memset(output, 0, PHP_MAX_SALT_LEN);
efree(output);
return result;
}
} else if (salt[0]=='$' && salt[1]=='5' && salt[2]=='$') {
char *output;
output = emalloc(PHP_MAX_SALT_LEN);
crypt_res = php_sha256_crypt_r(password, salt, output, PHP_MAX_SALT_LEN);
if (!crypt_res) {
memset(output, 0, PHP_MAX_SALT_LEN);
efree(output);
return NULL;
} else {
result = STR_INIT(output, strlen(output), 0);
memset(output, 0, PHP_MAX_SALT_LEN);
efree(output);
return result;
}
} else if (
salt[0] == '$' &&
salt[1] == '2' &&
salt[2] >= 'a' && salt[2] <= 'z' &&
salt[3] == '$' &&
salt[4] >= '0' && salt[4] <= '3' &&
salt[5] >= '0' && salt[5] <= '9' &&
salt[6] == '$') {
char output[PHP_MAX_SALT_LEN + 1];
memset(output, 0, PHP_MAX_SALT_LEN + 1);
crypt_res = php_crypt_blowfish_rn(password, salt, output, sizeof(output));
if (!crypt_res) {
memset(output, 0, PHP_MAX_SALT_LEN + 1);
return NULL;
} else {
result = STR_INIT(output, strlen(output), 0);
memset(output, 0, PHP_MAX_SALT_LEN + 1);
return result;
}
} else {
memset(&buffer, 0, sizeof(buffer));
_crypt_extended_init_r();
crypt_res = _crypt_extended_r(password, salt, &buffer);
if (!crypt_res) {
return NULL;
} else {
result = STR_INIT(crypt_res, strlen(crypt_res), 0);
return result;
}
}
}
#else
# if defined(HAVE_CRYPT_R) && (defined(_REENTRANT) || defined(_THREAD_SAFE))
{
# if defined(CRYPT_R_STRUCT_CRYPT_DATA)
struct crypt_data buffer;
memset(&buffer, 0, sizeof(buffer));
# elif defined(CRYPT_R_CRYPTD)
CRYPTD buffer;
# else
# error Data struct used by crypt_r() is unknown. Please report.
# endif
crypt_res = crypt_r(password, salt, &buffer);
if (!crypt_res) {
return FAILURE;
} else {
result = STR_INIT(crypt_res, strlen(crypt_res), 0);
return result;
}
}
# endif
#endif
}
/* }}} */
/* {{{ proto string crypt(string str [, string salt])
Hash a string */
PHP_FUNCTION(crypt)
{
char salt[PHP_MAX_SALT_LEN + 1];
char *str, *salt_in = NULL;
int str_len, salt_in_len = 0;
zend_string *result;
salt[0] = salt[PHP_MAX_SALT_LEN] = '\0';
/* This will produce suitable results if people depend on DES-encryption
* available (passing always 2-character salt). At least for glibc6.1 */
memset(&salt[1], '$', 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));
} else {
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "No salt parameter was specified. You must use a randomly generated salt and a strong hash function to produce a secure hash.");
}
/* The automatic salt generation covers standard DES, md5-crypt and Blowfish (simple) */
if (!*salt) {
#if PHP_MD5_CRYPT
strncpy(salt, "$1$", PHP_MAX_SALT_LEN);
php_to64(&salt[3], PHP_CRYPT_RAND, 4);
php_to64(&salt[7], PHP_CRYPT_RAND, 4);
strncpy(&salt[11], "$", PHP_MAX_SALT_LEN - 11);
#elif PHP_STD_DES_CRYPT
php_to64(&salt[0], PHP_CRYPT_RAND, 2);
salt[2] = '\0';
#endif
salt_in_len = strlen(salt);
} else {
salt_in_len = MIN(PHP_MAX_SALT_LEN, salt_in_len);
}
salt[salt_in_len] = '\0';
if ((result = php_crypt(str, str_len, salt, salt_in_len)) == NULL) {
if (salt[0] == '*' && salt[1] == '0') {
RETURN_STRING("*1");
} else {
RETURN_STRING("*0");
}
}
RETURN_STR(result);
}
/* }}} */
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
|
