| 1 |
/* |
| 2 |
* Copyright (C) 1998,1999 Nikos Mavroyanopoulos |
| 3 |
* |
| 4 |
* This library is free software; you can redistribute it and/or modify it under the terms of the |
| 5 |
* GNU Library General Public License as published by the Free Software |
| 6 |
* Foundation; either version 2 of the License, or (at your option) any |
| 7 |
* later version. |
| 8 |
* |
| 9 |
* This library is distributed in the hope that it will be useful, |
| 10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 |
* Library General Public License for more details. |
| 13 |
* |
| 14 |
* You should have received a copy of the GNU Library General Public |
| 15 |
* License along with this library; if not, write to the |
| 16 |
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 17 |
* Boston, MA 02111-1307, USA. |
| 18 |
*/ |
| 19 |
|
| 20 |
/* $Id: mcrypt_extra.c,v 1.10 2001/05/17 18:58:20 nmav Exp $ */ |
| 21 |
|
| 22 |
#ifndef LIBDEFS_H |
| 23 |
#define LIBDEFS_H |
| 24 |
#include <libdefs.h> |
| 25 |
#endif |
| 26 |
#include <bzero.h> |
| 27 |
#include <xmemory.h> |
| 28 |
#include <mcrypt_internal.h> |
| 29 |
|
| 30 |
|
| 31 |
int mcrypt_algorithm_module_ok(const char *file, const char *directory); |
| 32 |
int mcrypt_mode_module_ok(const char *file, const char *directory); |
| 33 |
#ifndef USE_LTDL |
| 34 |
void *mcrypt_dlopen_ext(const char *filename); |
| 35 |
#endif |
| 36 |
void *mcrypt_dlopen(const char *a_directory, const char *m_directory, |
| 37 |
const char *filename); |
| 38 |
|
| 39 |
#define MAXPATHLEN 256 |
| 40 |
WIN32DLL_DEFINE char *mcrypt_readdir(DIR * dirstream) |
| 41 |
{ |
| 42 |
|
| 43 |
char *result; |
| 44 |
struct dirent *ret = NULL; |
| 45 |
#ifdef HAVE_READDIR_R |
| 46 |
struct dirent ret2[sizeof(struct dirent)+MAXPATHLEN]; |
| 47 |
#endif |
| 48 |
|
| 49 |
#ifdef DT_REG |
| 50 |
do { |
| 51 |
#endif |
| 52 |
|
| 53 |
#ifdef HAVE_READDIR_R |
| 54 |
readdir_r(dirstream, ret2, &ret); |
| 55 |
if (ret==NULL) return NULL; |
| 56 |
#else |
| 57 |
ret = readdir(dirstream); |
| 58 |
#endif |
| 59 |
|
| 60 |
result = calloc(1, strlen(ret->d_name) + 1); |
| 61 |
if (result == NULL) { |
| 62 |
return NULL; |
| 63 |
} |
| 64 |
strcpy(result, ret->d_name); |
| 65 |
#ifdef DT_REG |
| 66 |
} |
| 67 |
while ((ret->d_type != DT_REG) && (ret->d_type != DT_UNKNOWN) |
| 68 |
&& (ret != NULL)); |
| 69 |
#endif |
| 70 |
|
| 71 |
return result; |
| 72 |
|
| 73 |
} |
| 74 |
|
| 75 |
WIN32DLL_DEFINE char **mcrypt_list_algorithms(char *libdir, int *size) |
| 76 |
{ |
| 77 |
DIR *pdir; |
| 78 |
char directory[512]; |
| 79 |
char *dirname; |
| 80 |
char **filename = NULL, *ptr; |
| 81 |
int tmpsize; |
| 82 |
|
| 83 |
*size = 0; |
| 84 |
|
| 85 |
if (libdir == NULL) { |
| 86 |
strcpy(directory, LIBDIR); |
| 87 |
} else { |
| 88 |
strcpy(directory, libdir); |
| 89 |
} |
| 90 |
|
| 91 |
pdir = opendir(directory); |
| 92 |
if (pdir == NULL) { |
| 93 |
#ifdef DEBUG |
| 94 |
fprintf(stderr, "Unable to open directory %s.\n", |
| 95 |
directory); |
| 96 |
#endif |
| 97 |
return NULL; |
| 98 |
} |
| 99 |
|
| 100 |
for (;;) { |
| 101 |
dirname = mcrypt_readdir(pdir); |
| 102 |
if (dirname != NULL) { |
| 103 |
tmpsize = strlen(dirname); |
| 104 |
if (tmpsize > 3) { |
| 105 |
if (mcrypt_algorithm_module_ok |
| 106 |
(dirname, directory) > 0) { |
| 107 |
filename = |
| 108 |
realloc(filename, |
| 109 |
(*size + |
| 110 |
1) * sizeof(char *)); |
| 111 |
if (filename==NULL) { |
| 112 |
free(dirname); |
| 113 |
return NULL; |
| 114 |
} |
| 115 |
filename[*size] = |
| 116 |
calloc(1, tmpsize + 1); |
| 117 |
if (filename[*size]==NULL) return NULL; |
| 118 |
strcpy(filename[*size], dirname); |
| 119 |
|
| 120 |
ptr = |
| 121 |
strrchr(filename[*size], '.'); |
| 122 |
if (ptr != NULL) |
| 123 |
*ptr = '\0'; |
| 124 |
(*size)++; |
| 125 |
} |
| 126 |
} |
| 127 |
free(dirname); |
| 128 |
} else { |
| 129 |
break; |
| 130 |
} |
| 131 |
|
| 132 |
} |
| 133 |
|
| 134 |
|
| 135 |
closedir(pdir); |
| 136 |
|
| 137 |
return filename; |
| 138 |
|
| 139 |
} |
| 140 |
|
| 141 |
WIN32DLL_DEFINE char **mcrypt_list_modes(char *libdir, int *size) |
| 142 |
{ |
| 143 |
DIR *pdir; |
| 144 |
char directory[512]; |
| 145 |
char *dirname; |
| 146 |
char **filename = NULL, *ptr; |
| 147 |
int tmpsize; |
| 148 |
|
| 149 |
if (libdir == NULL) { |
| 150 |
strcpy(directory, LIBDIR); |
| 151 |
} else { |
| 152 |
strcpy(directory, libdir); |
| 153 |
} |
| 154 |
|
| 155 |
pdir = opendir(directory); |
| 156 |
if (pdir == NULL) { |
| 157 |
#ifdef DEBUG |
| 158 |
fprintf(stderr, "Unable to open directory %s.\n", |
| 159 |
directory); |
| 160 |
#endif |
| 161 |
return NULL; |
| 162 |
} |
| 163 |
|
| 164 |
*size = 0; |
| 165 |
for (;;) { |
| 166 |
|
| 167 |
dirname = mcrypt_readdir(pdir); |
| 168 |
if (dirname != NULL) { |
| 169 |
tmpsize = strlen(dirname); |
| 170 |
if (tmpsize > 3) { |
| 171 |
if (mcrypt_mode_module_ok |
| 172 |
(dirname, directory) > 0) { |
| 173 |
filename = |
| 174 |
realloc(filename, |
| 175 |
(*size + |
| 176 |
1) * sizeof(char *)); |
| 177 |
if (filename==NULL) { |
| 178 |
free(dirname); |
| 179 |
return NULL; |
| 180 |
} |
| 181 |
filename[*size] = |
| 182 |
calloc(1, tmpsize + 1); |
| 183 |
if (filename[*size]==NULL) return NULL; |
| 184 |
|
| 185 |
strcpy(filename[*size], dirname); |
| 186 |
ptr = |
| 187 |
strrchr(filename[*size], '.'); |
| 188 |
if (ptr != NULL) |
| 189 |
*ptr = '\0'; |
| 190 |
(*size)++; |
| 191 |
} |
| 192 |
} |
| 193 |
free(dirname); |
| 194 |
} else { |
| 195 |
break; |
| 196 |
} |
| 197 |
|
| 198 |
} |
| 199 |
|
| 200 |
closedir(pdir); |
| 201 |
return filename; |
| 202 |
} |
| 203 |
|
| 204 |
WIN32DLL_DEFINE void mcrypt_free_p(char **p, int size) |
| 205 |
{ |
| 206 |
int i; |
| 207 |
|
| 208 |
for (i = 0; i < size; i++) { |
| 209 |
free(p[i]); |
| 210 |
} |
| 211 |
free(p); |
| 212 |
} |
| 213 |
|
| 214 |
WIN32DLL_DEFINE |
| 215 |
int mcrypt_algorithm_module_ok(const char *file, const char *directory) |
| 216 |
{ |
| 217 |
word32 ret; |
| 218 |
lt_dlhandle _handle; |
| 219 |
int (*_version) (void); |
| 220 |
|
| 221 |
if (file == NULL && directory == NULL) { |
| 222 |
return MCRYPT_UNKNOWN_ERROR; |
| 223 |
} |
| 224 |
|
| 225 |
if (lt_dlinit() != 0) { |
| 226 |
return MCRYPT_UNKNOWN_ERROR; |
| 227 |
} |
| 228 |
|
| 229 |
|
| 230 |
/* LTDL_SET_PRELOADED_SYMBOLS(); */ |
| 231 |
|
| 232 |
_handle = mcrypt_dlopen(directory, NULL, file); |
| 233 |
|
| 234 |
if (!_handle) { |
| 235 |
lt_dlexit(); |
| 236 |
return MCRYPT_UNKNOWN_ERROR; |
| 237 |
} |
| 238 |
|
| 239 |
|
| 240 |
_version = lt_dlsym(_handle, "_mcrypt_algorithm_version"); |
| 241 |
|
| 242 |
if (_version == NULL) { |
| 243 |
lt_dlclose(_handle); |
| 244 |
lt_dlexit(); |
| 245 |
return MCRYPT_UNKNOWN_ERROR; |
| 246 |
} |
| 247 |
|
| 248 |
ret = _version(); |
| 249 |
|
| 250 |
lt_dlclose(_handle); |
| 251 |
lt_dlexit(); |
| 252 |
|
| 253 |
return ret; |
| 254 |
|
| 255 |
} |
| 256 |
|
| 257 |
WIN32DLL_DEFINE |
| 258 |
int mcrypt_mode_module_ok(const char *file, const char *directory) |
| 259 |
{ |
| 260 |
word32 ret; |
| 261 |
lt_dlhandle _handle; |
| 262 |
int (*_version) (void); |
| 263 |
|
| 264 |
if (file == NULL && directory == NULL) { |
| 265 |
return MCRYPT_UNKNOWN_ERROR; |
| 266 |
} |
| 267 |
|
| 268 |
if (lt_dlinit() != 0) { |
| 269 |
return MCRYPT_UNKNOWN_ERROR; |
| 270 |
} |
| 271 |
/* LTDL_SET_PRELOADED_SYMBOLS(); */ |
| 272 |
|
| 273 |
_handle = mcrypt_dlopen(directory, NULL, file); |
| 274 |
|
| 275 |
if (!_handle) { |
| 276 |
lt_dlexit(); |
| 277 |
return MCRYPT_UNKNOWN_ERROR; |
| 278 |
} |
| 279 |
|
| 280 |
|
| 281 |
_version = lt_dlsym(_handle, "_mcrypt_mode_version"); |
| 282 |
|
| 283 |
if (_version == NULL) { |
| 284 |
lt_dlclose(_handle); |
| 285 |
lt_dlexit(); |
| 286 |
return MCRYPT_UNKNOWN_ERROR; |
| 287 |
} |
| 288 |
|
| 289 |
ret = _version(); |
| 290 |
|
| 291 |
lt_dlclose(_handle); |
| 292 |
lt_dlexit(); |
| 293 |
|
| 294 |
return ret; |
| 295 |
|
| 296 |
} |
| 297 |
|
| 298 |
/* Taken from libgcrypt */ |
| 299 |
|
| 300 |
static const char* |
| 301 |
parse_version_number( const char *s, int *number ) |
| 302 |
{ |
| 303 |
int val = 0; |
| 304 |
|
| 305 |
if( *s == '0' && isdigit(s[1]) ) |
| 306 |
return NULL; /* leading zeros are not allowed */ |
| 307 |
for ( ; isdigit(*s); s++ ) { |
| 308 |
val *= 10; |
| 309 |
val += *s - '0'; |
| 310 |
} |
| 311 |
*number = val; |
| 312 |
return val < 0? NULL : s; |
| 313 |
} |
| 314 |
|
| 315 |
|
| 316 |
static const char * |
| 317 |
parse_version_string( const char *s, int *major, int *minor, int *micro ) |
| 318 |
{ |
| 319 |
s = parse_version_number( s, major ); |
| 320 |
if( !s || *s != '.' ) |
| 321 |
return NULL; |
| 322 |
s++; |
| 323 |
s = parse_version_number( s, minor ); |
| 324 |
if( !s || *s != '.' ) |
| 325 |
return NULL; |
| 326 |
s++; |
| 327 |
s = parse_version_number( s, micro ); |
| 328 |
if( !s ) |
| 329 |
return NULL; |
| 330 |
return s; /* patchlevel */ |
| 331 |
} |
| 332 |
|
| 333 |
/**************** |
| 334 |
* Check that the the version of the library is at minimum the requested one |
| 335 |
* and return the version string; return NULL if the condition is not |
| 336 |
* satisfied. If a NULL is passed to this function, no check is done, |
| 337 |
* but the version string is simply returned. |
| 338 |
*/ |
| 339 |
const char * |
| 340 |
mcrypt_check_version( const char *req_version ) |
| 341 |
{ |
| 342 |
const char *ver = VERSION; |
| 343 |
int my_major, my_minor, my_micro; |
| 344 |
int rq_major, rq_minor, rq_micro; |
| 345 |
const char *my_plvl, *rq_plvl; |
| 346 |
|
| 347 |
if ( !req_version ) |
| 348 |
return ver; |
| 349 |
|
| 350 |
my_plvl = parse_version_string( ver, &my_major, &my_minor, &my_micro ); |
| 351 |
if ( !my_plvl ) |
| 352 |
return NULL; /* very strange our own version is bogus */ |
| 353 |
rq_plvl = parse_version_string( req_version, &rq_major, &rq_minor, |
| 354 |
&rq_micro ); |
| 355 |
if ( !rq_plvl ) |
| 356 |
return NULL; /* req version string is invalid */ |
| 357 |
|
| 358 |
if ( my_major > rq_major |
| 359 |
|| (my_major == rq_major && my_minor > rq_minor) |
| 360 |
|| (my_major == rq_major && my_minor == rq_minor |
| 361 |
&& my_micro > rq_micro) |
| 362 |
|| (my_major == rq_major && my_minor == rq_minor |
| 363 |
&& my_micro == rq_micro |
| 364 |
&& strcmp( my_plvl, rq_plvl ) >= 0) ) { |
| 365 |
return ver; |
| 366 |
} |
| 367 |
return NULL; |
| 368 |
} |
| 369 |
|
Parent Directory
| 
Revision Log