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Diffstat (limited to '')
| -rw-r--r-- | cipher/idea-stub.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/cipher/idea-stub.c b/cipher/idea-stub.c deleted file mode 100644 index 9dd0ced30..000000000 --- a/cipher/idea-stub.c +++ /dev/null @@ -1,198 +0,0 @@ -/* idea-stub.c - Dummy module for the deprecated IDEA cipher. - * Copyright (C) 2002 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GnuPG is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -/* IDEA is a patented algorithm and therefore the use of IDEA in - countries where this patent is valid can not be allowed due to the - terms of the GNU General Public License. Those restrictions are - there to help protecting the freedom of software. For more - information on the nonsense of software patents and the general - problem with this, please see http://www.noepatents.org. - - However for research purposes and in certain situations it might be - useful to use this algorithm anyway. - - We provide this stub which will dynload a idea module and is only - used if the configure run did't found statically linked file. - See http://www.gnupg.org/why-not-dea.html for details. -*/ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#ifdef HAVE_DL_DLOPEN - #include <dlfcn.h> -#endif -#ifdef __MINGW32__ - #include <windows.h> -#endif -#include "util.h" -#include "algorithms.h" - -#ifndef RTLD_NOW - #define RTLD_NOW 1 -#endif - - -#ifdef __MINGW32__ -#define HAVE_DL_DLOPEN -#define USE_DYNAMIC_LINKING - -static int last_error = 0; - -void* -dlopen (const char *pathname, int mode) -{ - void *h = LoadLibrary (pathname); - if (!h) - { - log_error ("LoadLibrary failed ec=%d\n", (int)GetLastError()); - last_error = 1; - return NULL; - } - return h; -} - -int -dlclose ( void *handle ) -{ - last_error = 0; - return FreeLibrary (handle); -} - -char* -dlerror (void) -{ - static char dlerrstr[10]; - if (last_error) - { - sprintf(dlerrstr, "%d", (int)GetLastError() ); - return dlerrstr; - } - return NULL; -} - -void* -dlsym ( void *handle, const char *name ) -{ - void *h = GetProcAddress (handle, name); - if (!h) - { - log_error ("GetProcAddress failed ec=%d\n", (int)GetLastError()); - last_error = 1; - } - return h; -} -#endif /*__MINGW32__*/ - -/* We do only support dlopen and the Windows emulation of it. */ -#ifndef HAVE_DL_DLOPEN -#undef USE_DYNAMIC_LINKING -#endif - - -static void * -load_module (const char *name) -{ -#ifdef USE_DYNAMIC_LINKING - const char *err; - void *handle; - void *sym; - -#ifndef __MINGW32__ - /* Make sure we are not setuid. */ - if (getuid() != geteuid()) - log_bug("trying to load an extension while still setuid\n"); -#endif - - handle = dlopen (name, RTLD_NOW); - if (!name) - { - /*log_error ("error loading module `%s': %s\n", name, dlerror());*/ - goto failure; - } - - sym = dlsym (handle, "idea_get_info"); - if (dlerror ()) - sym = dlsym (handle, "_idea_get_info"); - if ((err=dlerror())) - { - log_info ("invalid module `%s': %s\n", name, err); - goto failure; - } - - return sym; - - failure: - if (handle) - dlclose (handle); -#endif /*USE_DYNAMIC_LINKING*/ - return NULL; -} - -#ifdef __riscos__ -typedef -const char *(*INFO_CAST)(int, size_t*, size_t*, size_t*, - int (**)( void *, byte *, unsigned), - void (**)( void *, byte *, byte *), - void (**)( void *, byte *, byte *)); -#endif /* __riscos__ */ - -const char * -idea_get_info( int algo, size_t *keylen, - size_t *blocksize, size_t *contextsize, - int (**r_setkey)( void *c, byte *key, unsigned keylen ), - void (**r_encrypt)( void *c, byte *outbuf, byte *inbuf ), - void (**r_decrypt)( void *c, byte *outbuf, byte *inbuf ) - ) -{ - static int initialized; - static const char * (*info_fnc)(int, size_t*, size_t*, size_t*, - int (**)( void *, byte *, unsigned), - void (**)( void *, byte *, byte *), - void (**)( void *, byte *, byte *)); - const char *rstr; - int i; - - if (!initialized) - { - initialized = 1; - for (i=0; (rstr = dynload_enum_module_names (i)); i++) - { -#ifndef __riscos__ - info_fnc = load_module (rstr); -#else /* __riscos__ */ - info_fnc = (INFO_CAST) load_module (rstr); -#endif /* __riscos__ */ - if (info_fnc) - break; - } - } - if (!info_fnc) - return NULL; /* dynloadable module not found. */ - rstr = info_fnc (algo, keylen, blocksize, contextsize, - r_setkey, r_encrypt, r_decrypt); - if (rstr && *keylen == 128 && *blocksize == 8 - && *r_setkey && *r_encrypt && r_decrypt) - return rstr; - return NULL; -} - |