1 /* 2 * Copyright (c) 1997 - 2003 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 #include "krb5_locl.h" 35 36 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 37 krb5_mk_error(krb5_context context, 38 krb5_error_code error_code, 39 const char *e_text, 40 const krb5_data *e_data, 41 const krb5_principal client, 42 const krb5_principal server, 43 time_t *client_time, 44 int *client_usec, 45 krb5_data *reply) 46 { 47 const char *e_text2 = NULL; 48 KRB_ERROR msg; 49 krb5_timestamp sec; 50 int32_t usec; 51 size_t len = 0; 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 = e_text2 = krb5_get_error_message(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 = rk_UNCONST(&e_text); 72 if (e_data) 73 msg.e_data = rk_UNCONST(e_data); 74 if(server){ 75 msg.realm = server->realm; 76 msg.sname = server->name; 77 }else{ 78 static char unspec[] = "<unspecified realm>"; 79 msg.realm = unspec; 80 } 81 if(client){ 82 msg.crealm = &client->realm; 83 msg.cname = &client->name; 84 } 85 86 ASN1_MALLOC_ENCODE(KRB_ERROR, reply->data, reply->length, &msg, &len, ret); 87 if (e_text2) 88 krb5_free_error_message(context, e_text2); 89 if (ret) 90 return ret; 91 if(reply->length != len) 92 krb5_abortx(context, "internal error in ASN.1 encoder"); 93 return 0; 94 } 95