109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/*
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* Copyright (c) 1997, 1998 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: rd_rep.c,v 1.19 1999/12/02 17:05:12 joda Exp $");
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krb5_error_code
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krb5_rd_rep(krb5_context context,
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krb5_auth_context auth_context,
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const krb5_data *inbuf,
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krb5_ap_rep_enc_part **repl)
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{
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krb5_error_code ret;
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AP_REP ap_rep;
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size_t len;
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krb5_data data;
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krb5_crypto crypto;
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krb5_data_zero (&data);
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ret = 0;
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ret = decode_AP_REP(inbuf->data, inbuf->length, &ap_rep, &len);
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if (ret)
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return ret;
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if (ap_rep.pvno != 5) {
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ret = KRB5KRB_AP_ERR_BADVERSION;
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goto out;
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}
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if (ap_rep.msg_type != krb_ap_rep) {
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ret = KRB5KRB_AP_ERR_MSG_TYPE;
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goto out;
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}
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krb5_crypto_init(context, auth_context->keyblock, 0, &crypto);
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ret = krb5_decrypt_EncryptedData (context,
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crypto,
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KRB5_KU_AP_REQ_ENC_PART,
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&ap_rep.enc_part,
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&data);
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krb5_crypto_destroy(context, crypto);
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if (ret)
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goto out;
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*repl = malloc(sizeof(**repl));
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if (*repl == NULL) {
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ret = ENOMEM;
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goto out;
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}
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ret = krb5_decode_EncAPRepPart(context,
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data.data,
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data.length,
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*repl,
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&len);
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if (ret)
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return ret;
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if ((*repl)->ctime != auth_context->authenticator->ctime ||
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(*repl)->cusec != auth_context->authenticator->cusec) {
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ret = KRB5KRB_AP_ERR_MUT_FAIL;
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goto out;
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}
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if ((*repl)->seq_number)
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auth_context->remote_seqnumber = *((*repl)->seq_number);
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out:
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krb5_data_free (&data);
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free_AP_REP (&ap_rep);
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return ret;
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}
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void
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krb5_free_ap_rep_enc_part (krb5_context context,
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krb5_ap_rep_enc_part *val)
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{
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free_EncAPRepPart (val);
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free (val);
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}
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