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/* $OpenBSD: rd_err.c,v 1.3 1997/12/09 07:57:33 art Exp $ */
/* $KTH: rd_err.c,v 1.8 1997/04/01 08:18:40 joda Exp $ */
/*
* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Kungliga Tekniska
* Högskolan and its contributors.
*
* 4. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "krb_locl.h"
/*
* Given an AUTH_MSG_APPL_ERR message, "in" and its length "in_length",
* return the error code from the message in "code" and the text in
* "m_data" as follows:
*
* m_data->app_data points to the error text
* m_data->app_length points to the length of the error text
*
* If all goes well, return RD_AP_OK. If the version number
* is wrong, return RD_AP_VERSION, and if it's not an AUTH_MSG_APPL_ERR
* type message, return RD_AP_MSG_TYPE.
*
* The AUTH_MSG_APPL_ERR message format can be found in mk_err.c
*/
int
krb_rd_err(u_char *in, u_int32_t in_length, int32_t *code, MSG_DAT *m_data)
{
unsigned char *p = (unsigned char*)in;
unsigned char pvno, type;
int little_endian;
if (p == NULL)
return KFAILURE;
pvno = *p++;
if(pvno != KRB_PROT_VERSION)
return RD_AP_VERSION;
type = *p++;
little_endian = type & 1;
type &= ~1;
if(type != AUTH_MSG_APPL_ERR)
return RD_AP_MSG_TYPE;
p += krb_get_int(p, (u_int32_t *)&code, 4, little_endian);
m_data->app_data = p;
m_data->app_length = in_length; /* XXX is this correct? */
return KSUCCESS;
}
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