1/* 2 * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifdef HAVE_CONFIG_H 35#include "config.h" 36RCSID("$Id$"); 37#endif 38 39#include "otp_locl.h" 40 41int 42otp_challenge (OtpContext *ctx, char *user, char *str, size_t len) 43{ 44 void *dbm; 45 int ret; 46 47 ctx->challengep = 0; 48 ctx->err = NULL; 49 ctx->user = strdup(user); 50 if (ctx->user == NULL) { 51 ctx->err = "Out of memory"; 52 return -1; 53 } 54 dbm = otp_db_open (); 55 if (dbm == NULL) { 56 ctx->err = "Cannot open database"; 57 return -1; 58 } 59 ret = otp_get (dbm, ctx); 60 otp_db_close (dbm); 61 if (ret) 62 return ret; 63 snprintf (str, len, 64 "[ otp-%s %u %s ]", 65 ctx->alg->name, ctx->n-1, ctx->seed); 66 ctx->challengep = 1; 67 return 0; 68} 69