1 /* $NetBSD: mk_error.c,v 1.1.1.2 2014/04/24 12:45:50 pettai Exp $ */ 2 3 /* 4 * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "krb5_locl.h" 37 38 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 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 const char *e_text2 = NULL; 50 KRB_ERROR msg; 51 krb5_timestamp sec; 52 int32_t usec; 53 size_t len = 0; 54 krb5_error_code ret = 0; 55 56 krb5_us_timeofday (context, &sec, &usec); 57 58 memset(&msg, 0, sizeof(msg)); 59 msg.pvno = 5; 60 msg.msg_type = krb_error; 61 msg.stime = sec; 62 msg.susec = usec; 63 msg.ctime = client_time; 64 msg.cusec = client_usec; 65 /* Make sure we only send `protocol' error codes */ 66 if(error_code < KRB5KDC_ERR_NONE || error_code >= KRB5_ERR_RCSID) { 67 if(e_text == NULL) 68 e_text = e_text2 = krb5_get_error_message(context, error_code); 69 error_code = KRB5KRB_ERR_GENERIC; 70 } 71 msg.error_code = error_code - KRB5KDC_ERR_NONE; 72 if (e_text) 73 msg.e_text = rk_UNCONST(&e_text); 74 if (e_data) 75 msg.e_data = rk_UNCONST(e_data); 76 if(server){ 77 msg.realm = server->realm; 78 msg.sname = server->name; 79 }else{ 80 static char unspec[] = "<unspecified realm>"; 81 msg.realm = unspec; 82 } 83 if(client){ 84 msg.crealm = &client->realm; 85 msg.cname = &client->name; 86 } 87 88 ASN1_MALLOC_ENCODE(KRB_ERROR, reply->data, reply->length, &msg, &len, ret); 89 if (e_text2) 90 krb5_free_error_message(context, e_text2); 91 if (ret) 92 return ret; 93 if(reply->length != len) 94 krb5_abortx(context, "internal error in ASN.1 encoder"); 95 return 0; 96 } 97