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