132 lines
4.0 KiB
C
132 lines
4.0 KiB
C
/*
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* Copyright (c) 1995, 1996, 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 the 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 "krb_locl.h"
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RCSID("$Id: kdc_reply.c,v 1.9 1997/04/15 21:52:14 assar Exp $");
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static int little_endian; /* XXX ugly */
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int
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kdc_reply_cred(KTEXT cip, CREDENTIALS *cred)
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{
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unsigned char *p = cip->dat;
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memcpy(cred->session, p, 8);
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p += 8;
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if(p + strlen((char*)p) > cip->dat + cip->length)
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return INTK_BADPW;
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p += krb_get_string(p, cred->service);
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if(p + strlen((char*)p) > cip->dat + cip->length)
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return INTK_BADPW;
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p += krb_get_string(p, cred->instance);
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if(p + strlen((char*)p) > cip->dat + cip->length)
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return INTK_BADPW;
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p += krb_get_string(p, cred->realm);
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if(p + 3 > cip->dat + cip->length)
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return INTK_BADPW;
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cred->lifetime = *p++;
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cred->kvno = *p++;
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cred->ticket_st.length = *p++;
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if(p + cred->ticket_st.length + 4 > cip->dat + cip->length)
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return INTK_BADPW;
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memcpy(cred->ticket_st.dat, p, cred->ticket_st.length);
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p += cred->ticket_st.length;
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p += krb_get_int(p, (u_int32_t *)&cred->issue_date, 4, little_endian);
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return KSUCCESS;
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}
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int
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kdc_reply_cipher(KTEXT reply, KTEXT cip)
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{
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unsigned char *p;
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unsigned char pvno;
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unsigned char type;
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char aname[ANAME_SZ];
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char inst[INST_SZ];
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char realm[REALM_SZ];
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u_int32_t kdc_time;
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u_int32_t exp_date;
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u_int32_t clen;
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p = reply->dat;
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pvno = *p++;
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if (pvno != KRB_PROT_VERSION )
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return INTK_PROT;
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type = *p++;
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little_endian = type & 1;
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type &= ~1;
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if(type == AUTH_MSG_ERR_REPLY){
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u_int32_t code;
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p += strlen((char*)p) + 1; /* name */
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p += strlen((char*)p) + 1; /* instance */
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p += strlen((char*)p) + 1; /* realm */
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p += 4; /* time */
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p += krb_get_int(p, &code, 4, little_endian);
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return code;
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}
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if(type != AUTH_MSG_KDC_REPLY)
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return INTK_PROT;
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p += krb_get_nir(p, aname, inst, realm);
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p += krb_get_int(p, &kdc_time, 4, little_endian);
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p++; /* number of tickets */
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p += krb_get_int(p, &exp_date, 4, little_endian);
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p++; /* master key version number */
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p += krb_get_int(p, &clen, 2, little_endian);
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cip->length = clen;
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memcpy(cip->dat, p, clen);
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p += clen;
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return KSUCCESS;
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}
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