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/*
* verify.c --- verify message
*
* $Source$
* $Author$
* $Header$
*
* Copyright 1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
*/
#include <gssapi.h>
#include <krb5/asn1.h>
OM_uint32 gss_verify(minor_status, context, message_buffer,
token_buffer, qop_state)
OM_uint32 *minor_status;
gss_ctx_id_t context;
gss_buffer_t message_buffer;
gss_buffer_t token_buffer;
int *qop_state;
{
OM_uint32 retval;
krb5_data inbuf, outbuf, *scratch;
krb5_safe *message;
int safe_flags = 0;
*minor_status = 0;
if (retval = gss_check_token(minor_status, message_buffer,
GSS_API_KRB5_TYPE, GSS_API_KRB5_SIGN))
return(retval);
inbuf.length = token_buffer->length-4;
inbuf.data = ( (char *) token_buffer->value)+4;
if (*minor_status = decode_krb5_safe(&inbuf, &message))
return(GSS_S_FAILURE);
if (message->user_data.data)
krb5_xfree(message->user_data.data);
message->user_data.length = message_buffer->length;
message->user_data.data = message_buffer->value;
if (*minor_status = encode_krb5_safe(&message, &scratch)) {
message->user_data.data = NULL;
krb5_free_safe(message);
return(GSS_S_FAILURE);
}
message->user_data.data = NULL;
krb5_free_safe(message);
if (context->flags & GSS_C_SEQUENCE_FLAG)
safe_flags = KRB5_SAFE_DOSEQUENCE|KRB5_SAFE_NOTIME;
if (*minor_status = krb5_rd_safe(scratch,
context->session_key,
&context->his_address,
&context->my_address,
context->his_seq_num,
safe_flags,
0, /* no rcache */
&outbuf)) {
krb5_free_data(scratch);
return(GSS_S_FAILURE);
}
krb5_free_data(scratch);
if (qop_state)
*qop_state = 0;
return(GSS_S_COMPLETE);
}
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