1*0a6a1f1dSLionel Sambuc /* $NetBSD: otp_verify.c,v 1.1.1.2 2014/04/24 12:45:51 pettai Exp $ */
2ebfedea0SLionel Sambuc
3ebfedea0SLionel Sambuc /*
4ebfedea0SLionel Sambuc * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
5ebfedea0SLionel Sambuc * (Royal Institute of Technology, Stockholm, Sweden).
6ebfedea0SLionel Sambuc * All rights reserved.
7ebfedea0SLionel Sambuc *
8ebfedea0SLionel Sambuc * Redistribution and use in source and binary forms, with or without
9ebfedea0SLionel Sambuc * modification, are permitted provided that the following conditions
10ebfedea0SLionel Sambuc * are met:
11ebfedea0SLionel Sambuc *
12ebfedea0SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
13ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer.
14ebfedea0SLionel Sambuc *
15ebfedea0SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
16ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
17ebfedea0SLionel Sambuc * documentation and/or other materials provided with the distribution.
18ebfedea0SLionel Sambuc *
19ebfedea0SLionel Sambuc * 3. Neither the name of the Institute nor the names of its contributors
20ebfedea0SLionel Sambuc * may be used to endorse or promote products derived from this software
21ebfedea0SLionel Sambuc * without specific prior written permission.
22ebfedea0SLionel Sambuc *
23ebfedea0SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24ebfedea0SLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25ebfedea0SLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26ebfedea0SLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27ebfedea0SLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28ebfedea0SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29ebfedea0SLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30ebfedea0SLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31ebfedea0SLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32ebfedea0SLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33ebfedea0SLionel Sambuc * SUCH DAMAGE.
34ebfedea0SLionel Sambuc */
35ebfedea0SLionel Sambuc
36ebfedea0SLionel Sambuc #ifdef HAVE_CONFIG_H
37ebfedea0SLionel Sambuc #include "config.h"
38*0a6a1f1dSLionel Sambuc __RCSID("NetBSD");
39ebfedea0SLionel Sambuc #endif
40ebfedea0SLionel Sambuc
41ebfedea0SLionel Sambuc #include "otp_locl.h"
42ebfedea0SLionel Sambuc
43ebfedea0SLionel Sambuc int
otp_verify_user_1(OtpContext * ctx,const char * passwd)44ebfedea0SLionel Sambuc otp_verify_user_1 (OtpContext *ctx, const char *passwd)
45ebfedea0SLionel Sambuc {
46ebfedea0SLionel Sambuc OtpKey key1, key2;
47ebfedea0SLionel Sambuc
48ebfedea0SLionel Sambuc if (otp_parse (key1, passwd, ctx->alg)) {
49ebfedea0SLionel Sambuc ctx->err = "Syntax error in reply";
50ebfedea0SLionel Sambuc return -1;
51ebfedea0SLionel Sambuc }
52ebfedea0SLionel Sambuc memcpy (key2, key1, sizeof(key1));
53ebfedea0SLionel Sambuc ctx->alg->next (key2);
54ebfedea0SLionel Sambuc if (memcmp (ctx->key, key2, sizeof(key2)) == 0) {
55ebfedea0SLionel Sambuc --ctx->n;
56ebfedea0SLionel Sambuc memcpy (ctx->key, key1, sizeof(key1));
57ebfedea0SLionel Sambuc return 0;
58ebfedea0SLionel Sambuc } else
59ebfedea0SLionel Sambuc return -1;
60ebfedea0SLionel Sambuc }
61ebfedea0SLionel Sambuc
62ebfedea0SLionel Sambuc int
otp_verify_user(OtpContext * ctx,const char * passwd)63ebfedea0SLionel Sambuc otp_verify_user (OtpContext *ctx, const char *passwd)
64ebfedea0SLionel Sambuc {
65ebfedea0SLionel Sambuc void *dbm;
66ebfedea0SLionel Sambuc int ret;
67ebfedea0SLionel Sambuc
68ebfedea0SLionel Sambuc if (!ctx->challengep)
69ebfedea0SLionel Sambuc return -1;
70ebfedea0SLionel Sambuc ret = otp_verify_user_1 (ctx, passwd);
71ebfedea0SLionel Sambuc dbm = otp_db_open ();
72ebfedea0SLionel Sambuc if (dbm == NULL) {
73ebfedea0SLionel Sambuc free(ctx->user);
74ebfedea0SLionel Sambuc return -1;
75ebfedea0SLionel Sambuc }
76ebfedea0SLionel Sambuc otp_put (dbm, ctx);
77ebfedea0SLionel Sambuc free(ctx->user);
78ebfedea0SLionel Sambuc otp_db_close (dbm);
79ebfedea0SLionel Sambuc return ret;
80ebfedea0SLionel Sambuc }
81