1 |
nmav |
1.1 |
/* |
2 |
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* Copyright (C) 1998,1999 Nikos Mavroyanopoulos |
3 |
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* |
4 |
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* This library is free software; you can redistribute it and/or modify it under the terms of the |
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* GNU Library General Public License as published by the Free Software |
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* Foundation; either version 2 of the License, or (at your option) any |
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* later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
18 |
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*/ |
19 |
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20 |
nmav |
1.13 |
/* $Id: mcrypt_extra.c,v 1.12 2001/07/11 07:34:20 nmav Exp $ */ |
21 |
nmav |
1.1 |
|
22 |
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#ifndef LIBDEFS_H |
23 |
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#define LIBDEFS_H |
24 |
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#include <libdefs.h> |
25 |
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#endif |
26 |
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#include <bzero.h> |
27 |
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#include <xmemory.h> |
28 |
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#include <mcrypt_internal.h> |
29 |
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30 |
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31 |
nmav |
1.3 |
int mcrypt_algorithm_module_ok(const char *file, const char *directory); |
32 |
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int mcrypt_mode_module_ok(const char *file, const char *directory); |
33 |
nmav |
1.13 |
|
34 |
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void *mcrypt_dlopen(mcrypt_dlhandle *handle, const char *a_directory, const char *m_directory, |
35 |
nmav |
1.6 |
const char *filename); |
36 |
nmav |
1.3 |
|
37 |
nmav |
1.12 |
#ifdef HAVE_READDIR_R |
38 |
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# define MAXPATHLEN 256 |
39 |
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#endif |
40 |
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|
41 |
nmav |
1.6 |
WIN32DLL_DEFINE char *mcrypt_readdir(DIR * dirstream) |
42 |
nmav |
1.3 |
{ |
43 |
nmav |
1.2 |
|
44 |
nmav |
1.6 |
char *result; |
45 |
nmav |
1.3 |
struct dirent *ret = NULL; |
46 |
nmav |
1.6 |
#ifdef HAVE_READDIR_R |
47 |
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struct dirent ret2[sizeof(struct dirent)+MAXPATHLEN]; |
48 |
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#endif |
49 |
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50 |
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#ifdef DT_REG |
51 |
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do { |
52 |
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#endif |
53 |
nmav |
1.2 |
|
54 |
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#ifdef HAVE_READDIR_R |
55 |
nmav |
1.6 |
readdir_r(dirstream, ret2, &ret); |
56 |
nmav |
1.2 |
#else |
57 |
nmav |
1.6 |
ret = readdir(dirstream); |
58 |
nmav |
1.2 |
#endif |
59 |
nmav |
1.12 |
if (ret==NULL) return NULL; |
60 |
nmav |
1.6 |
|
61 |
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result = calloc(1, strlen(ret->d_name) + 1); |
62 |
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if (result == NULL) { |
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return NULL; |
64 |
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} |
65 |
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strcpy(result, ret->d_name); |
66 |
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#ifdef DT_REG |
67 |
nmav |
1.3 |
} |
68 |
nmav |
1.6 |
while ((ret->d_type != DT_REG) && (ret->d_type != DT_UNKNOWN) |
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&& (ret != NULL)); |
70 |
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#endif |
71 |
nmav |
1.3 |
|
72 |
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return result; |
73 |
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74 |
nmav |
1.2 |
} |
75 |
nmav |
1.1 |
|
76 |
nmav |
1.13 |
static char* inc_algos[] = { |
77 |
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"arcfour", |
78 |
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NULL |
79 |
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}; |
80 |
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81 |
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static char* inc_modes[] = { |
82 |
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"stream", |
83 |
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NULL |
84 |
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}; |
85 |
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86 |
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87 |
nmav |
1.6 |
WIN32DLL_DEFINE char **mcrypt_list_algorithms(char *libdir, int *size) |
88 |
nmav |
1.1 |
{ |
89 |
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DIR *pdir; |
90 |
nmav |
1.2 |
char directory[512]; |
91 |
nmav |
1.6 |
char *dirname; |
92 |
nmav |
1.1 |
char **filename = NULL, *ptr; |
93 |
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int tmpsize; |
94 |
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95 |
nmav |
1.13 |
|
96 |
nmav |
1.1 |
*size = 0; |
97 |
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98 |
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if (libdir == NULL) { |
99 |
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strcpy(directory, LIBDIR); |
100 |
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} else { |
101 |
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strcpy(directory, libdir); |
102 |
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} |
103 |
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104 |
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pdir = opendir(directory); |
105 |
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if (pdir == NULL) { |
106 |
nmav |
1.11 |
#ifdef DEBUG |
107 |
nmav |
1.1 |
fprintf(stderr, "Unable to open directory %s.\n", |
108 |
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directory); |
109 |
nmav |
1.11 |
#endif |
110 |
nmav |
1.1 |
return NULL; |
111 |
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} |
112 |
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113 |
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for (;;) { |
114 |
nmav |
1.2 |
dirname = mcrypt_readdir(pdir); |
115 |
nmav |
1.1 |
if (dirname != NULL) { |
116 |
nmav |
1.6 |
tmpsize = strlen(dirname); |
117 |
nmav |
1.3 |
if (tmpsize > 3) { |
118 |
nmav |
1.6 |
if (mcrypt_algorithm_module_ok |
119 |
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(dirname, directory) > 0) { |
120 |
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filename = |
121 |
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realloc(filename, |
122 |
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(*size + |
123 |
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1) * sizeof(char *)); |
124 |
nmav |
1.10 |
if (filename==NULL) { |
125 |
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free(dirname); |
126 |
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return NULL; |
127 |
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} |
128 |
nmav |
1.6 |
filename[*size] = |
129 |
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calloc(1, tmpsize + 1); |
130 |
nmav |
1.7 |
if (filename[*size]==NULL) return NULL; |
131 |
nmav |
1.6 |
strcpy(filename[*size], dirname); |
132 |
nmav |
1.10 |
|
133 |
nmav |
1.6 |
ptr = |
134 |
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strrchr(filename[*size], '.'); |
135 |
nmav |
1.3 |
if (ptr != NULL) |
136 |
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*ptr = '\0'; |
137 |
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(*size)++; |
138 |
nmav |
1.1 |
} |
139 |
nmav |
1.3 |
} |
140 |
nmav |
1.10 |
free(dirname); |
141 |
nmav |
1.1 |
} else { |
142 |
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break; |
143 |
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} |
144 |
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145 |
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} |
146 |
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147 |
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148 |
nmav |
1.3 |
closedir(pdir); |
149 |
nmav |
1.1 |
|
150 |
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return filename; |
151 |
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152 |
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} |
153 |
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154 |
nmav |
1.6 |
WIN32DLL_DEFINE char **mcrypt_list_modes(char *libdir, int *size) |
155 |
nmav |
1.1 |
{ |
156 |
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DIR *pdir; |
157 |
nmav |
1.2 |
char directory[512]; |
158 |
nmav |
1.6 |
char *dirname; |
159 |
nmav |
1.1 |
char **filename = NULL, *ptr; |
160 |
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int tmpsize; |
161 |
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162 |
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if (libdir == NULL) { |
163 |
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strcpy(directory, LIBDIR); |
164 |
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} else { |
165 |
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strcpy(directory, libdir); |
166 |
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} |
167 |
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168 |
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pdir = opendir(directory); |
169 |
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if (pdir == NULL) { |
170 |
nmav |
1.11 |
#ifdef DEBUG |
171 |
nmav |
1.1 |
fprintf(stderr, "Unable to open directory %s.\n", |
172 |
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directory); |
173 |
nmav |
1.11 |
#endif |
174 |
nmav |
1.1 |
return NULL; |
175 |
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} |
176 |
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177 |
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*size = 0; |
178 |
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for (;;) { |
179 |
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180 |
nmav |
1.2 |
dirname = mcrypt_readdir(pdir); |
181 |
nmav |
1.1 |
if (dirname != NULL) { |
182 |
nmav |
1.6 |
tmpsize = strlen(dirname); |
183 |
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if (tmpsize > 3) { |
184 |
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if (mcrypt_mode_module_ok |
185 |
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(dirname, directory) > 0) { |
186 |
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filename = |
187 |
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realloc(filename, |
188 |
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(*size + |
189 |
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1) * sizeof(char *)); |
190 |
nmav |
1.10 |
if (filename==NULL) { |
191 |
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free(dirname); |
192 |
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return NULL; |
193 |
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} |
194 |
nmav |
1.6 |
filename[*size] = |
195 |
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calloc(1, tmpsize + 1); |
196 |
nmav |
1.7 |
if (filename[*size]==NULL) return NULL; |
197 |
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|
198 |
nmav |
1.6 |
strcpy(filename[*size], dirname); |
199 |
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ptr = |
200 |
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strrchr(filename[*size], '.'); |
201 |
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if (ptr != NULL) |
202 |
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*ptr = '\0'; |
203 |
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(*size)++; |
204 |
nmav |
1.1 |
} |
205 |
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} |
206 |
nmav |
1.6 |
free(dirname); |
207 |
nmav |
1.1 |
} else { |
208 |
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break; |
209 |
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} |
210 |
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211 |
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} |
212 |
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213 |
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closedir(pdir); |
214 |
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return filename; |
215 |
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} |
216 |
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|
217 |
nmav |
1.6 |
WIN32DLL_DEFINE void mcrypt_free_p(char **p, int size) |
218 |
nmav |
1.3 |
{ |
219 |
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int i; |
220 |
nmav |
1.1 |
|
221 |
nmav |
1.3 |
for (i = 0; i < size; i++) { |
222 |
nmav |
1.1 |
free(p[i]); |
223 |
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} |
224 |
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free(p); |
225 |
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} |
226 |
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|
227 |
nmav |
1.5 |
WIN32DLL_DEFINE |
228 |
nmav |
1.6 |
int mcrypt_algorithm_module_ok(const char *file, const char *directory) |
229 |
nmav |
1.1 |
{ |
230 |
|
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word32 ret; |
231 |
nmav |
1.13 |
mcrypt_dlhandle _handle; |
232 |
|
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void* rr; |
233 |
nmav |
1.1 |
int (*_version) (void); |
234 |
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|
235 |
nmav |
1.3 |
if (file == NULL && directory == NULL) { |
236 |
nmav |
1.1 |
return MCRYPT_UNKNOWN_ERROR; |
237 |
|
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} |
238 |
nmav |
1.4 |
|
239 |
nmav |
1.3 |
if (lt_dlinit() != 0) { |
240 |
nmav |
1.1 |
return MCRYPT_UNKNOWN_ERROR; |
241 |
|
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} |
242 |
nmav |
1.4 |
|
243 |
nmav |
1.3 |
|
244 |
nmav |
1.2 |
/* LTDL_SET_PRELOADED_SYMBOLS(); */ |
245 |
nmav |
1.3 |
|
246 |
nmav |
1.13 |
rr = mcrypt_dlopen(&_handle, directory, NULL, file); |
247 |
nmav |
1.1 |
|
248 |
nmav |
1.13 |
if (!rr) { |
249 |
nmav |
1.1 |
lt_dlexit(); |
250 |
|
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return MCRYPT_UNKNOWN_ERROR; |
251 |
|
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} |
252 |
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|
253 |
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|
254 |
nmav |
1.13 |
_version = mcrypt_dlsym(_handle, "_mcrypt_algorithm_version"); |
255 |
nmav |
1.1 |
|
256 |
nmav |
1.3 |
if (_version == NULL) { |
257 |
nmav |
1.13 |
mcrypt_dlclose(_handle); |
258 |
nmav |
1.1 |
lt_dlexit(); |
259 |
|
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return MCRYPT_UNKNOWN_ERROR; |
260 |
|
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} |
261 |
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|
262 |
|
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ret = _version(); |
263 |
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|
264 |
nmav |
1.13 |
mcrypt_dlclose(_handle); |
265 |
nmav |
1.1 |
lt_dlexit(); |
266 |
|
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|
267 |
|
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return ret; |
268 |
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|
269 |
|
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} |
270 |
|
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|
271 |
nmav |
1.5 |
WIN32DLL_DEFINE |
272 |
nmav |
1.6 |
int mcrypt_mode_module_ok(const char *file, const char *directory) |
273 |
nmav |
1.1 |
{ |
274 |
|
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word32 ret; |
275 |
nmav |
1.13 |
mcrypt_dlhandle _handle; |
276 |
|
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void* rr; |
277 |
nmav |
1.1 |
int (*_version) (void); |
278 |
|
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|
279 |
nmav |
1.3 |
if (file == NULL && directory == NULL) { |
280 |
nmav |
1.1 |
return MCRYPT_UNKNOWN_ERROR; |
281 |
|
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} |
282 |
|
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|
283 |
nmav |
1.3 |
if (lt_dlinit() != 0) { |
284 |
nmav |
1.1 |
return MCRYPT_UNKNOWN_ERROR; |
285 |
nmav |
1.3 |
} |
286 |
nmav |
1.1 |
/* LTDL_SET_PRELOADED_SYMBOLS(); */ |
287 |
nmav |
1.3 |
|
288 |
nmav |
1.13 |
rr = mcrypt_dlopen(&_handle, directory, NULL, file); |
289 |
nmav |
1.3 |
|
290 |
nmav |
1.13 |
if (!rr) { |
291 |
nmav |
1.1 |
lt_dlexit(); |
292 |
|
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return MCRYPT_UNKNOWN_ERROR; |
293 |
|
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} |
294 |
nmav |
1.3 |
|
295 |
nmav |
1.1 |
|
296 |
nmav |
1.13 |
_version = mcrypt_dlsym(_handle, "_mcrypt_mode_version"); |
297 |
nmav |
1.1 |
|
298 |
nmav |
1.3 |
if (_version == NULL) { |
299 |
nmav |
1.13 |
mcrypt_dlclose(_handle); |
300 |
nmav |
1.1 |
lt_dlexit(); |
301 |
|
|
return MCRYPT_UNKNOWN_ERROR; |
302 |
|
|
} |
303 |
nmav |
1.3 |
|
304 |
nmav |
1.1 |
ret = _version(); |
305 |
|
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|
306 |
nmav |
1.13 |
mcrypt_dlclose(_handle); |
307 |
nmav |
1.1 |
lt_dlexit(); |
308 |
|
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|
309 |
|
|
return ret; |
310 |
|
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|
311 |
|
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} |
312 |
nmav |
1.8 |
|
313 |
|
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/* Taken from libgcrypt */ |
314 |
|
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|
315 |
|
|
static const char* |
316 |
|
|
parse_version_number( const char *s, int *number ) |
317 |
|
|
{ |
318 |
|
|
int val = 0; |
319 |
|
|
|
320 |
|
|
if( *s == '0' && isdigit(s[1]) ) |
321 |
|
|
return NULL; /* leading zeros are not allowed */ |
322 |
|
|
for ( ; isdigit(*s); s++ ) { |
323 |
|
|
val *= 10; |
324 |
|
|
val += *s - '0'; |
325 |
|
|
} |
326 |
|
|
*number = val; |
327 |
|
|
return val < 0? NULL : s; |
328 |
|
|
} |
329 |
|
|
|
330 |
|
|
|
331 |
|
|
static const char * |
332 |
|
|
parse_version_string( const char *s, int *major, int *minor, int *micro ) |
333 |
|
|
{ |
334 |
|
|
s = parse_version_number( s, major ); |
335 |
|
|
if( !s || *s != '.' ) |
336 |
|
|
return NULL; |
337 |
|
|
s++; |
338 |
|
|
s = parse_version_number( s, minor ); |
339 |
|
|
if( !s || *s != '.' ) |
340 |
|
|
return NULL; |
341 |
|
|
s++; |
342 |
|
|
s = parse_version_number( s, micro ); |
343 |
|
|
if( !s ) |
344 |
|
|
return NULL; |
345 |
|
|
return s; /* patchlevel */ |
346 |
|
|
} |
347 |
|
|
|
348 |
|
|
/**************** |
349 |
|
|
* Check that the the version of the library is at minimum the requested one |
350 |
|
|
* and return the version string; return NULL if the condition is not |
351 |
|
|
* satisfied. If a NULL is passed to this function, no check is done, |
352 |
|
|
* but the version string is simply returned. |
353 |
|
|
*/ |
354 |
|
|
const char * |
355 |
|
|
mcrypt_check_version( const char *req_version ) |
356 |
|
|
{ |
357 |
|
|
const char *ver = VERSION; |
358 |
|
|
int my_major, my_minor, my_micro; |
359 |
|
|
int rq_major, rq_minor, rq_micro; |
360 |
|
|
const char *my_plvl, *rq_plvl; |
361 |
|
|
|
362 |
|
|
if ( !req_version ) |
363 |
|
|
return ver; |
364 |
|
|
|
365 |
|
|
my_plvl = parse_version_string( ver, &my_major, &my_minor, &my_micro ); |
366 |
|
|
if ( !my_plvl ) |
367 |
|
|
return NULL; /* very strange our own version is bogus */ |
368 |
|
|
rq_plvl = parse_version_string( req_version, &rq_major, &rq_minor, |
369 |
|
|
&rq_micro ); |
370 |
|
|
if ( !rq_plvl ) |
371 |
|
|
return NULL; /* req version string is invalid */ |
372 |
|
|
|
373 |
|
|
if ( my_major > rq_major |
374 |
|
|
|| (my_major == rq_major && my_minor > rq_minor) |
375 |
|
|
|| (my_major == rq_major && my_minor == rq_minor |
376 |
|
|
&& my_micro > rq_micro) |
377 |
|
|
|| (my_major == rq_major && my_minor == rq_minor |
378 |
|
|
&& my_micro == rq_micro |
379 |
|
|
&& strcmp( my_plvl, rq_plvl ) >= 0) ) { |
380 |
|
|
return ver; |
381 |
|
|
} |
382 |
|
|
return NULL; |
383 |
|
|
} |
384 |
|
|
|