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/* |
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* Copyright (C) 1998,1999 Nikos Mavroyanopoulos |
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* |
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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 |
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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. |
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*/ |
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|
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/* $Id: mcrypt_extra.c,v 1.2 2000/09/16 02:01:38 nmav Exp $ */ |
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|
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#ifndef LIBDEFS_H |
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#define LIBDEFS_H |
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#include <libdefs.h> |
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#endif |
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#include <bzero.h> |
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#include <xmemory.h> |
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#include <mcrypt_internal.h> |
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|
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#if 0 |
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extern int preloaded_symbols; |
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#endif |
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|
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int mcrypt_algorithm_module_ok(const char *file, const char *directory); |
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int mcrypt_mode_module_ok(const char *file, const char *directory); |
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#ifndef USE_LTDL |
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void *mcrypt_dlopen_ext(const char *filename); |
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#endif |
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void *mcrypt_dlopen ( const char* a_directory, const char *m_directory, const char *filename); |
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|
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struct dirent *mcrypt_readdir(DIR * dirstream) |
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{ |
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|
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struct dirent *result; |
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struct dirent *ret = NULL; |
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|
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#ifdef HAVE_READDIR_R |
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struct dirent ret2[sizeof(struct dirent)]; |
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|
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readdir_r(dirstream, ret2, &ret); |
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#else |
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ret = readdir(dirstream); |
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#endif |
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if (ret != NULL) { |
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result = malloc(sizeof(struct dirent)); |
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memmove(result, ret, sizeof(struct dirent)); |
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} else { |
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result = NULL; |
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} |
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|
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return result; |
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|
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} |
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|
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char **mcrypt_list_algorithms(char *libdir, int *size) |
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{ |
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DIR *pdir; |
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char directory[512]; |
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struct dirent *dirname; |
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char **filename = NULL, *ptr; |
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int tmpsize; |
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|
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*size = 0; |
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|
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if (libdir == NULL) { |
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strcpy(directory, LIBDIR); |
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} else { |
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strcpy(directory, libdir); |
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} |
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|
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pdir = opendir(directory); |
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if (pdir == NULL) { |
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fprintf(stderr, "Unable to open directory %s.\n", |
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directory); |
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return NULL; |
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} |
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|
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|
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for (;;) { |
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dirname = mcrypt_readdir(pdir); |
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if (dirname != NULL) { |
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#ifdef DT_REG |
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if ((dirname->d_type == DT_REG) |
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|| (dirname->d_type == DT_UNKNOWN)) { |
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#endif |
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tmpsize = strlen(dirname->d_name); /*(unsigned int)dirname->d_namlen;*/ |
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|
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if (tmpsize > 3) { |
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if (mcrypt_algorithm_module_ok(dirname->d_name, directory) > 0) { |
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filename = realloc(filename, (*size + 1) * sizeof(char *)); |
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filename[*size] = calloc(1, tmpsize + 1); |
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strcpy(filename[*size], dirname->d_name); |
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|
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ptr = strrchr(filename[*size], '.'); |
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if (ptr != NULL) |
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*ptr = '\0'; |
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(*size)++; |
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} |
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} |
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#ifdef DT_REG |
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} |
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#endif |
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if (dirname != NULL) |
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free(dirname); |
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} else { |
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if (dirname != NULL) |
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free(dirname); |
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break; |
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} |
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|
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} |
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|
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|
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closedir(pdir); |
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|
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return filename; |
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|
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} |
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|
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char **mcrypt_list_modes(char *libdir, int *size) |
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{ |
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DIR *pdir; |
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char directory[512]; |
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struct dirent *dirname; |
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char **filename = NULL, *ptr; |
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int tmpsize; |
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|
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if (libdir == NULL) { |
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strcpy(directory, LIBDIR); |
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} else { |
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strcpy(directory, libdir); |
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} |
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|
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pdir = opendir(directory); |
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if (pdir == NULL) { |
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fprintf(stderr, "Unable to open directory %s.\n", |
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directory); |
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return NULL; |
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} |
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|
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*size = 0; |
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for (;;) { |
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|
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dirname = mcrypt_readdir(pdir); |
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if (dirname != NULL) { |
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#ifdef DT_REG |
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if ((dirname->d_type == DT_REG) |
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|| (dirname->d_type == DT_UNKNOWN)) { |
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#endif |
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tmpsize = strlen(dirname->d_name); |
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if (tmpsize > 3) { |
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if (mcrypt_mode_module_ok |
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(dirname->d_name, |
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directory) > 0) { |
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filename = |
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realloc(filename, |
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(*size + |
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1) * |
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sizeof(char |
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*)); |
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filename[*size] = |
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calloc(1, tmpsize + 1); |
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strcpy(filename[*size], |
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dirname->d_name); |
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ptr = |
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strrchr(filename |
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[*size], '.'); |
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if (ptr != NULL) |
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*ptr = '\0'; |
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(*size)++; |
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} |
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} |
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#ifdef DT_REG |
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} |
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#endif |
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if (dirname != NULL) |
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free(dirname); |
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} else { |
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if (dirname != NULL) |
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free(dirname); |
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break; |
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} |
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|
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} |
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|
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closedir(pdir); |
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return filename; |
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} |
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|
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|
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void mcrypt_free_p(char **p, int size) |
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{ |
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int i; |
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|
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for (i = 0; i < size; i++) { |
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free(p[i]); |
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} |
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free(p); |
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} |
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|
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int mcrypt_algorithm_module_ok(const char *file, const char *directory) |
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{ |
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word32 ret; |
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lt_dlhandle *_handle; |
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int (*_version) (void); |
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|
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if (file == NULL && directory == NULL) { |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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if (lt_dlinit() != 0) { |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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/* LTDL_SET_PRELOADED_SYMBOLS(); */ |
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|
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_handle = mcrypt_dlopen(directory, NULL, file); |
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|
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if (!_handle) { |
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/* fputs(lt_dlerror(), stderr); |
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* fputs("\n", stderr); |
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*/ |
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lt_dlexit(); |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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|
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_version = lt_dlsym(_handle, "_mcrypt_algorithm_version"); |
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|
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if (_version == NULL) { |
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lt_dlclose(_handle); |
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lt_dlexit(); |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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ret = _version(); |
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|
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lt_dlclose(_handle); |
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lt_dlexit(); |
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|
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return ret; |
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|
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} |
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|
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int mcrypt_mode_module_ok(const char *file, const char *directory) |
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{ |
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word32 ret; |
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lt_dlhandle *_handle; |
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int (*_version) (void); |
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|
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if (file == NULL && directory == NULL) { |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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if (lt_dlinit() != 0) { |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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/* LTDL_SET_PRELOADED_SYMBOLS(); */ |
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|
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_handle = mcrypt_dlopen(directory, NULL, file); |
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|
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if (!_handle) { |
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lt_dlexit(); |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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|
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_version = lt_dlsym(_handle, "_mcrypt_mode_version"); |
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|
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if (_version == NULL) { |
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lt_dlclose(_handle); |
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lt_dlexit(); |
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return MCRYPT_UNKNOWN_ERROR; |
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} |
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|
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ret = _version(); |
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|
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lt_dlclose(_handle); |
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lt_dlexit(); |
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|
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return ret; |
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|
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} |
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