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/*
* loadman.c --
*
* Loader for various crypto libraries.
*
* Copyright (c) 1997 Andreas Kupries (andreas_kupries@users.sourceforge.net)
* All rights reserved.
*
* CVS: $Id: loadman.c,v 1.12 2008/12/11 19:04:25 andreas_kupries Exp $
*/
#include "loadman.h"
/*
* Allow the Makefile to define this value
*/
#ifndef SSL_LIB_NAME
# ifdef __WIN32__
# define SSL_LIB_NAME "crypto32.dll"
# endif /* __WIN32__ */
# ifdef __APPLE__
# define SSL_LIB_NAME "libcrypto.dylib"
# endif /* __APPLE__ */
# ifndef SSL_LIB_NAME
# define SSL_LIB_NAME "libcrypto.so"
# endif /* SSL_LIB_NAME */
#endif /* SSL_LIB_NAME */
#ifndef CRYPT_LIB_NAME
# ifdef __WIN32__
# define CRYPT_LIB_NAME "crypt.dll"
# endif /* __WIN32__ */
# ifdef __APPLE__
# define CRYPT_LIB_NAME "libcrypto.dylib"
# endif /* __APPLE__ */
# ifndef CRYPT_LIB_NAME
# define CRYPT_LIB_NAME "libcrypt.so"
# endif /* SSL_LIB_NAME */
#endif /* SSL_LIB_NAME */
typedef struct SslLibFunctions {
void* handle;
/* MD2 */
void (* md2_init) _ANSI_ARGS_ ((MD2_CTX* c));
void (* md2_update) _ANSI_ARGS_ ((MD2_CTX* c, unsigned char* data, unsigned long length));
void (* md2_final) _ANSI_ARGS_ ((unsigned char* digest, MD2_CTX* c));
/* SHA1 */
void (* sha1_init) _ANSI_ARGS_ ((SHA_CTX* c));
void (* sha1_update) _ANSI_ARGS_ ((SHA_CTX* c, unsigned char* data, unsigned long length));
void (* sha1_final) _ANSI_ARGS_ ((unsigned char* digest, SHA_CTX* c));
} sslLibFunctions;
static char* ssl_symbols [] = {
/* md2 */
"MD2_Init",
"MD2_Update",
"MD2_Final",
/* sha1 */
"SHA1_Init",
"SHA1_Update",
"SHA1_Final",
/* -- */
(char *) NULL,
};
#ifndef MD5_STATIC_BUILD
static char* crypt_symbols [] = {
/* md5 */
"MD5_Init",
"MD5_Update",
"MD5_Final",
"crypt",
/* -- */
(char *) NULL,
};
#endif
/*
* Global variables containing the vectors to DES, MD2, ...
*/
md2Functions md2f = {0}; /* THREADING: serialize initialization */
sha1Functions sha1f = {0}; /* THREADING: serialize initialization */
md5Functions md5f = {0}; /* THREADING: serialize initialization */
#ifdef MD5_STATIC_BUILD
#include "../md5-crypt/md5.h" /* THREADING: import of one constant var, read-only => safe */
extern char *md5_crypt(const char *key, const char *salt);
static void md5_update(MD5_CTX *c, unsigned char* data, unsigned long length)
{
md5_process_bytes(data, length, c);
}
static void md5_final(unsigned char* digest, MD5_CTX* c) {
md5_finish_ctx(c, digest);
}
#endif
/*
* Internal global var's, contains all vectors loaded from SSL's 'cryptlib'.
* contains all vectors loaded from 'libdes' library.
*/
static sslLibFunctions ssl; /* THREADING: serialize initialization */
/*
*------------------------------------------------------*
*
* TrfLoadMD2 --
*
* ------------------------------------------------*
* Makes MD2 functionality available.
* ------------------------------------------------*
*
* Sideeffects:
* Loads the required shared library and
* makes the addresses of MD2 functionality
* available. In case of failure an error
* message is left in the result area of
* the specified interpreter.
*
* Result:
* A standard tcl error code.
*
*------------------------------------------------------*
*/
int
TrfLoadMD2 (interp)
Tcl_Interp* interp;
{
#ifdef SSL_STATIC_BUILD
md2f.loaded = 1;
md2f.init = MD2_Init;
md2f.update = MD2_Update;
md2f.final = MD2_Final;
return TCL_OK;
#else
int res;
TrfLock; /* THREADING: serialize initialization */
if (md2f.loaded) {
TrfUnlock;
return TCL_OK;
}
res = Trf_LoadLibrary (interp, SSL_LIB_NAME, (VOID**) &ssl, ssl_symbols, 0);
if ((res == TCL_OK) &&
(ssl.md2_init != NULL) &&
(ssl.md2_update != NULL) &&
(ssl.md2_final != NULL)) {
md2f.loaded = 1;
md2f.init = ssl.md2_init;
md2f.update = ssl.md2_update;
md2f.final = ssl.md2_final;
TrfUnlock;
return TCL_OK;
}
TrfUnlock;
return TCL_ERROR;
#endif
}
/*
*------------------------------------------------------*
*
* TrfLoadMD5 --
*
* ------------------------------------------------*
* Makes MD5 functionality available.
* ------------------------------------------------*
*
* Sideeffects:
* Loads the required shared library and
* makes the addresses of MD5 functionality
* available. In case of failure an error
* message is left in the result area of
* the specified interpreter.
*
* Result:
* A standard tcl error code.
*
*------------------------------------------------------*
*/
int
TrfLoadMD5 (interp)
Tcl_Interp* interp;
{
#ifdef MD5_STATIC_BUILD
md5f.loaded = 1;
md5f.init = md5_init_ctx;
md5f.update = md5_update;
md5f.final = md5_final;
md5f.crypt = md5_crypt;
return TCL_OK;
#else
int res;
TrfLock; /* THREADING: serialize initialization */
res = Trf_LoadLibrary (interp, CRYPT_LIB_NAME, (VOID**) &md5f,
crypt_symbols, 0);
TrfUnlock;
return res;
#endif
}
/*
*------------------------------------------------------*
*
* TrfLoadSHA1 --
*
* ------------------------------------------------*
* Makes SHA-1 functionality available.
* ------------------------------------------------*
*
* Sideeffects:
* Loads the required shared library and
* makes the addresses of SHA-1 functionality
* available. In case of failure an error
* message is left in the result area of
* the specified interpreter.
*
*
* Result:
* A standard tcl error code.
*
*------------------------------------------------------*
*/
int
TrfLoadSHA1 (interp)
Tcl_Interp* interp;
{
#ifdef SSL_STATIC_BUILD
sha1f.loaded = 1;
sha1f.init = SHA1_Init;
sha1f.update = SHA1_Update;
sha1f.final = SHA1_Final;
return TCL_OK;
#else
int res;
TrfLock; /* THREADING: serialize initialization */
if (sha1f.loaded) {
TrfUnlock;
return TCL_OK;
}
res = Trf_LoadLibrary (interp, SSL_LIB_NAME, (VOID**) &ssl, ssl_symbols, 0);
if ((res == TCL_OK) &&
(ssl.sha1_init != NULL) &&
(ssl.sha1_update != NULL) &&
(ssl.sha1_final != NULL)) {
sha1f.loaded = 1;
sha1f.init = ssl.sha1_init;
sha1f.update = ssl.sha1_update;
sha1f.final = ssl.sha1_final;
TrfUnlock;
return TCL_OK;
}
TrfUnlock;
return TCL_ERROR;
#endif
}
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