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a3aba57c00
with an aim to make the code simpiler and more correct. Gone is the old (since the very early Samba 3.0 krb5 days) 'iterate over all keytypes)' code in gensec_krb5, we now follow the approach used in gensec_gssapi, and use a keytab. I have also done a lot of work in the GSSAPI code, to try and reduce the diff between us and upstream heimdal. It was becoming hard to track patches in this code, and I also want this patch (the DCE_STYLE support) to be in a 'manageable' state for when lha considers it for merging. (metze assures me it still has memory leak problems, but I've started to address some of that). This patch also includes a simple update of other code to current heimdal, as well as changes we need for better PAC verification. On the PAC side of things we now match windows member servers by checking the name and authtime on an incoming PAC. Not generating these right was the cause of the PAC pain, and so now both the main code and torture test validate this behaviour. One thing doesn't work with this patch: - the sealing of RPC pipes with kerberos, Samba -> Samba seems broken. I'm pretty sure this is related to AES, and the need to break apart the gss_wrap interface. Andrew Bartlett
120 lines
3.7 KiB
C
120 lines
3.7 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: rd_rep.c,v 1.25 2005/06/17 07:49:33 lha Exp $");
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krb5_error_code KRB5_LIB_FUNCTION
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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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krb5_clear_error_string (context);
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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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krb5_clear_error_string (context);
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goto out;
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}
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ret = krb5_crypto_init(context, auth_context->keyblock, 0, &crypto);
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if (ret)
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goto out;
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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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krb5_set_error_string (context, "malloc: out of memory");
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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 (auth_context->flags & KRB5_AUTH_CONTEXT_DO_TIME) {
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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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krb5_clear_error_string (context);
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goto out;
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}
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}
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if ((*repl)->seq_number)
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krb5_auth_con_setremoteseqnumber(context, auth_context,
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*((*repl)->seq_number));
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if ((*repl)->subkey)
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krb5_auth_con_setremotesubkey(context, auth_context, (*repl)->subkey);
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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 KRB5_LIB_FUNCTION
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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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