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/* $Id: openssl-compat.c,v 1.19 2014/07/02 05:28:07 djm Exp $ */
/*
* Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define SSH_DONT_OVERLOAD_OPENSSL_FUNCS
#include "includes.h"
#include <stdarg.h>
#include <string.h>
#ifdef USE_OPENSSL_ENGINE
# include <openssl/engine.h>
# include <openssl/conf.h>
#endif
#include "log.h"
#include "openssl-compat.h"
/*
* OpenSSL version numbers: MNNFFPPS: major minor fix patch status
* We match major, minor, fix and status (not patch) for <1.0.0.
* After that, we acceptable compatible fix versions (so we
* allow 1.0.1 to work with 1.0.0). Going backwards is only allowed
* within a patch series.
*/
int
ssh_compatible_openssl(long headerver, long libver)
{
long mask, hfix, lfix;
/* exact match is always OK */
if (headerver == libver)
return 1;
/* for versions < 1.0.0, major,minor,fix,status must match */
if (headerver < 0x1000000f) {
mask = 0xfffff00fL; /* major,minor,fix,status */
return (headerver & mask) == (libver & mask);
}
/*
* For versions >= 1.0.0, major,minor,status must match and library
* fix version must be equal to or newer than the header.
*/
mask = 0xfff0000fL; /* major,minor,status */
hfix = (headerver & 0x000ff000) >> 12;
lfix = (libver & 0x000ff000) >> 12;
if ( (headerver & mask) == (libver & mask) && lfix >= hfix)
return 1;
return 0;
}
#ifdef USE_OPENSSL_ENGINE
void
ssh_OpenSSL_add_all_algorithms(void)
{
OpenSSL_add_all_algorithms();
/* Enable use of crypto hardware */
ENGINE_load_builtin_engines();
ENGINE_register_all_complete();
OPENSSL_config(NULL);
}
#endif
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