129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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* Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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RCSID("$Id: mk_error.c,v 1.16 2001/05/14 06:14:49 assar Exp $");
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krb5_error_code
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krb5_mk_error(krb5_context context,
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krb5_error_code error_code,
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const char *e_text,
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const krb5_data *e_data,
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const krb5_principal client,
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const krb5_principal server,
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time_t *ctime,
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int *cusec,
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krb5_data *reply)
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{
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KRB_ERROR msg;
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u_char *buf;
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size_t buf_size;
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int32_t sec, usec;
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size_t len;
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krb5_error_code ret = 0;
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krb5_us_timeofday (context, &sec, &usec);
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memset(&msg, 0, sizeof(msg));
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msg.pvno = 5;
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msg.msg_type = krb_error;
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msg.stime = sec;
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msg.susec = usec;
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msg.ctime = ctime;
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msg.cusec = cusec;
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/* Make sure we only send `protocol' error codes */
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if(error_code < KRB5KDC_ERR_NONE || error_code >= KRB5_ERR_RCSID) {
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if(e_text == NULL)
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e_text = krb5_get_err_text(context, error_code);
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error_code = KRB5KRB_ERR_GENERIC;
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}
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msg.error_code = error_code - KRB5KDC_ERR_NONE;
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if (e_text)
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msg.e_text = (general_string*)&e_text;
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if (e_data)
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msg.e_data = (octet_string*)e_data;
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if(server){
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msg.realm = server->realm;
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msg.sname = server->name;
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}else{
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msg.realm = "<unspecified realm>";
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}
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if(client){
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msg.crealm = &client->realm;
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msg.cname = &client->name;
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}
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buf_size = 1024;
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buf = malloc (buf_size);
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if (buf == NULL) {
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krb5_set_error_string (context, "malloc: out of memory");
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return ENOMEM;
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}
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do {
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ret = encode_KRB_ERROR(buf + buf_size - 1,
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buf_size,
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&msg,
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&len);
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if (ret) {
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if (ret == ASN1_OVERFLOW) {
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u_char *tmp;
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buf_size *= 2;
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tmp = realloc (buf, buf_size);
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if (tmp == NULL) {
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krb5_set_error_string (context, "malloc: out of memory");
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ret = ENOMEM;
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goto out;
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}
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buf = tmp;
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} else {
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goto out;
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}
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}
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} while (ret == ASN1_OVERFLOW);
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reply->length = len;
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reply->data = malloc(len);
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if (reply->data == NULL) {
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krb5_set_error_string (context, "malloc: out of memory");
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ret = ENOMEM;
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goto out;
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}
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memcpy (reply->data, buf + buf_size - len, len);
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out:
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free (buf);
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return ret;
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}
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