6a467e50db
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@3573 ec53bebd-3082-4978-b11e-865c3cabbd6b
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*
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* Copyright (c) 1997 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Kungliga Tekniska
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* Högskolan and its contributors.
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*
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* 4. 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("$Id$");
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krb5_error_code
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krb5_mk_safe(krb5_context context,
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krb5_auth_context auth_context,
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const krb5_data *userdata,
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krb5_data *outbuf,
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/*krb5_replay_data*/ void *outdata)
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{
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krb5_error_code r;
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KRB_SAFE s;
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int32_t sec, usec;
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KerberosTime sec2;
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unsigned usec2;
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u_char buf[1024];
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size_t len;
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unsigned tmp_seq;
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krb5_cksumtype cksumtype;
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if (auth_context->cksumtype)
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cksumtype = auth_context->cksumtype;
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else {
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r = krb5_keytype_to_cksumtype (context,
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auth_context->key.keytype,
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&cksumtype);
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if (r)
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return r;
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}
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s.pvno = 5;
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s.msg_type = krb_safe;
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s.safe_body.user_data = *userdata;
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krb5_us_timeofday (context, &sec, &usec);
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sec2 = sec;
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s.safe_body.timestamp = &sec2;
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usec2 = usec2;
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s.safe_body.usec = &usec2;
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if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
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tmp_seq = ++auth_context->local_seqnumber;
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s.safe_body.seq_number = &tmp_seq;
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} else
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s.safe_body.seq_number = NULL;
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s.safe_body.s_address = auth_context->local_address;
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s.safe_body.r_address = auth_context->remote_address;
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s.cksum.cksumtype = 0;
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s.cksum.checksum.data = NULL;
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s.cksum.checksum.length = 0;
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r = encode_KRB_SAFE (buf + sizeof(buf) - 1,
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sizeof(buf),
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&s,
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&len);
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if (r)
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return r;
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r = krb5_create_checksum (context,
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cksumtype,
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buf + sizeof(buf) - len,
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len,
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&auth_context->key,
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&s.cksum);
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if (r)
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return r;
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r = encode_KRB_SAFE (buf + sizeof(buf) - 1, sizeof(buf), &s, &len);
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if (r)
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return r;
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outbuf->length = len;
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outbuf->data = malloc (len);
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if (outbuf->data == NULL)
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return ENOMEM;
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memcpy (outbuf->data, buf + sizeof(buf) - len, len);
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return 0;
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}
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