1 /* 2 * Copyright (c) 1997 - 2002 Kungliga Tekniska H�gskolan 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 #include "krb5_locl.h" 35 36 RCSID("$Id: mk_error.c,v 1.18 2002/09/04 16:26:04 joda Exp $"); 37 38 krb5_error_code 39 krb5_mk_error(krb5_context context, 40 krb5_error_code error_code, 41 const char *e_text, 42 const krb5_data *e_data, 43 const krb5_principal client, 44 const krb5_principal server, 45 time_t *client_time, 46 int *client_usec, 47 krb5_data *reply) 48 { 49 KRB_ERROR msg; 50 int32_t sec, usec; 51 size_t len; 52 krb5_error_code ret = 0; 53 54 krb5_us_timeofday (context, &sec, &usec); 55 56 memset(&msg, 0, sizeof(msg)); 57 msg.pvno = 5; 58 msg.msg_type = krb_error; 59 msg.stime = sec; 60 msg.susec = usec; 61 msg.ctime = client_time; 62 msg.cusec = client_usec; 63 /* Make sure we only send `protocol' error codes */ 64 if(error_code < KRB5KDC_ERR_NONE || error_code >= KRB5_ERR_RCSID) { 65 if(e_text == NULL) 66 e_text = krb5_get_err_text(context, error_code); 67 error_code = KRB5KRB_ERR_GENERIC; 68 } 69 msg.error_code = error_code - KRB5KDC_ERR_NONE; 70 if (e_text) 71 msg.e_text = (general_string*)&e_text; 72 if (e_data) 73 msg.e_data = (octet_string*)e_data; 74 if(server){ 75 msg.realm = server->realm; 76 msg.sname = server->name; 77 }else{ 78 msg.realm = "<unspecified realm>"; 79 } 80 if(client){ 81 msg.crealm = &client->realm; 82 msg.cname = &client->name; 83 } 84 85 ASN1_MALLOC_ENCODE(KRB_ERROR, reply->data, reply->length, &msg, &len, ret); 86 if (ret) 87 return ret; 88 if(reply->length != len) 89 krb5_abortx(context, "internal error in ASN.1 encoder"); 90 return 0; 91 } 92