diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/create_ticket.c')
-rw-r--r-- | crypto/kerberosIV/lib/krb/create_ticket.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/create_ticket.c b/crypto/kerberosIV/lib/krb/create_ticket.c new file mode 100644 index 0000000..b469232 --- /dev/null +++ b/crypto/kerberosIV/lib/krb/create_ticket.c @@ -0,0 +1,134 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "krb_locl.h" + +RCSID("$Id: create_ticket.c,v 1.12 1997/04/01 08:18:21 joda Exp $"); + +/* + * Create ticket takes as arguments information that should be in a + * ticket, and the KTEXT object in which the ticket should be + * constructed. It then constructs a ticket and returns, leaving the + * newly created ticket in tkt. + * The length of the ticket is a multiple of + * eight bytes and is in tkt->length. + * + * If the ticket is too long, the ticket will contain nulls. + * + * The corresponding routine to extract information from a ticket it + * decomp_ticket. When changes are made to this routine, the + * corresponding changes should also be made to that file. + * + * The packet is built in the following format: + * + * variable + * type or constant data + * ---- ----------- ---- + * + * tkt->length length of ticket (multiple of 8 bytes) + * + * tkt->dat: + * + * unsigned char flags namely, HOST_BYTE_ORDER + * + * string pname client's name + * + * string pinstance client's instance + * + * string prealm client's realm + * + * 4 bytes paddress client's address + * + * 8 bytes session session key + * + * 1 byte life ticket lifetime + * + * 4 bytes time_sec KDC timestamp + * + * string sname service's name + * + * string sinstance service's instance + * + * <=7 bytes null null pad to 8 byte multiple + * + */ + +int +krb_create_ticket(KTEXT tkt, /* Gets filled in by the ticket */ + unsigned char flags, /* Various Kerberos flags */ + char *pname, /* Principal's name */ + char *pinstance, /* Principal's instance */ + char *prealm, /* Principal's authentication domain */ + int32_t paddress, /* Net address of requesting entity */ + void *session, /* Session key inserted in ticket */ + int16_t life, /* Lifetime of the ticket */ + int32_t time_sec, /* Issue time and date */ + char *sname, /* Service Name */ + char *sinstance, /* Instance Name */ + des_cblock *key) /* Service's secret key */ +{ + unsigned char *p = tkt->dat; + + memset(tkt, 0, sizeof(KTEXT_ST)); + + p += krb_put_int(flags, p, 1); + p += krb_put_nir(pname, pinstance, prealm, p); + + p += krb_put_address(paddress, p); + + memcpy(p, session, 8); + p += 8; + + p += krb_put_int(life, p, 1); + p += krb_put_int(time_sec, p, 4); + + p += krb_put_nir(sname, sinstance, NULL, p); + + /* multiple of eight bytes */ + tkt->length = (p - tkt->dat + 7) & ~7; + + /* Check length of ticket */ + if (tkt->length > (sizeof(KTEXT_ST) - 7)) { + memset(tkt->dat, 0, tkt->length); + tkt->length = 0; + return KFAILURE /* XXX */; + } + + encrypt_ktext(tkt, key, DES_ENCRYPT); + return KSUCCESS; +} |