1 /* $Id: openssl-compat.c,v 1.19 2014/07/02 05:28:07 djm Exp $ */
2
3 /*
4 * Copyright (c) 2005 Darren Tucker <dtucker@zip.com.au>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #define SSH_DONT_OVERLOAD_OPENSSL_FUNCS
20 #include "includes.h"
21
22 #ifdef WITH_OPENSSL
23
24 #include <stdarg.h>
25 #include <string.h>
26
27 #ifdef USE_OPENSSL_ENGINE
28 # include <openssl/engine.h>
29 # include <openssl/conf.h>
30 #endif
31
32 #include "log.h"
33
34 #include "openssl-compat.h"
35
36 /*
37 * OpenSSL version numbers: MNNFFPPS: major minor fix patch status
38 * We match major, minor, fix and status (not patch) for <1.0.0.
39 * After that, we acceptable compatible fix versions (so we
40 * allow 1.0.1 to work with 1.0.0). Going backwards is only allowed
41 * within a patch series.
42 */
43
44 int
ssh_compatible_openssl(long headerver,long libver)45 ssh_compatible_openssl(long headerver, long libver)
46 {
47 long mask, hfix, lfix;
48
49 /* exact match is always OK */
50 if (headerver == libver)
51 return 1;
52
53 /* for versions < 1.0.0, major,minor,fix,status must match */
54 if (headerver < 0x1000000f) {
55 mask = 0xfffff00fL; /* major,minor,fix,status */
56 return (headerver & mask) == (libver & mask);
57 }
58
59 /*
60 * For versions >= 1.0.0, major,minor,status must match and library
61 * fix version must be equal to or newer than the header.
62 */
63 mask = 0xfff0000fL; /* major,minor,status */
64 hfix = (headerver & 0x000ff000) >> 12;
65 lfix = (libver & 0x000ff000) >> 12;
66 if ( (headerver & mask) == (libver & mask) && lfix >= hfix)
67 return 1;
68 return 0;
69 }
70
71 #ifdef USE_OPENSSL_ENGINE
72 void
ssh_OpenSSL_add_all_algorithms(void)73 ssh_OpenSSL_add_all_algorithms(void)
74 {
75 OpenSSL_add_all_algorithms();
76
77 /* Enable use of crypto hardware */
78 ENGINE_load_builtin_engines();
79 ENGINE_register_all_complete();
80 OPENSSL_config(NULL);
81 }
82 #endif
83
84 #endif /* WITH_OPENSSL */
85