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d79d4a7ced
- Get all functions prototyped or at least defined before use.
- Make code compile (Mostly) clean with -Wall set
- Start to reduce the degree to which DES aka libdes is built in.
- get all functions to the same uniform standard of definition:
int
foo(a, b)
int a;
int *b;
{
:
}
- fix numerous bugs exposed by above processes.
Note - this replaces the previous work which used an unpopular function
definition style.
133 lines
4.0 KiB
C
133 lines
4.0 KiB
C
/*
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* Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
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* of Technology.
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* For copying and distribution information, please see the file
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* <Copyright.MIT>.
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*
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* from: create_ticket.c,v 4.11 89/03/22 14:43:23 jtkohl Exp $
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* $Id: create_ticket.c,v 1.3 1995/07/18 16:38:12 mark Exp $
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*/
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#if 0
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#ifndef lint
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static char rcsid[] =
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"$Id: create_ticket.c,v 1.3 1995/07/18 16:38:12 mark Exp $";
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#endif /* lint */
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#endif
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#include <stdio.h>
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#include <des.h>
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#include <krb.h>
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#include <prot.h>
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#include <strings.h>
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/*
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* Create ticket takes as arguments information that should be in a
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* ticket, and the KTEXT object in which the ticket should be
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* constructed. It then constructs a ticket and returns, leaving the
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* newly created ticket in tkt.
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* The length of the ticket is a multiple of
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* eight bytes and is in tkt->length.
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*
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* If the ticket is too long, the ticket will contain nulls.
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* The return value of the routine is undefined.
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*
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* The corresponding routine to extract information from a ticket it
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* decomp_ticket. When changes are made to this routine, the
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* corresponding changes should also be made to that file.
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*
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* The packet is built in the following format:
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*
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* variable
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* type or constant data
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* ---- ----------- ----
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*
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* tkt->length length of ticket (multiple of 8 bytes)
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*
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* tkt->dat:
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*
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* unsigned char flags namely, HOST_BYTE_ORDER
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*
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* string pname client's name
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*
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* string pinstance client's instance
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*
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* string prealm client's realm
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*
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* 4 bytes paddress client's address
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*
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* 8 bytes session session key
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*
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* 1 byte life ticket lifetime
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*
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* 4 bytes time_sec KDC timestamp
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*
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* string sname service's name
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*
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* string sinstance service's instance
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*
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* <=7 bytes null null pad to 8 byte multiple
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*
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*/
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int krb_create_ticket(tkt, flags, pname, pinstance, prealm, paddress,
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session, life, time_sec, sname, sinstance, key)
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KTEXT tkt; /* Gets filled in by the ticket */
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unsigned char flags; /* Various Kerberos flags */
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char *pname; /* Principal's name */
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char *pinstance; /* Principal's instance */
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char *prealm; /* Principal's authentication domain */
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long paddress; /* Net address of requesting entity */
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char *session; /* Session key inserted in ticket */
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short life; /* Lifetime of the ticket */
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long time_sec; /* Issue time and date */
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char *sname; /* Service Name */
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char *sinstance; /* Instance Name */
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C_Block key; /* Service's secret key */
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{
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Key_schedule key_s;
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register char *data; /* running index into ticket */
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tkt->length = 0; /* Clear previous data */
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flags |= HOST_BYTE_ORDER; /* ticket byte order */
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bcopy((char *) &flags,(char *) (tkt->dat),sizeof(flags));
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data = ((char *)tkt->dat) + sizeof(flags);
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(void) strcpy(data, pname);
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data += 1 + strlen(pname);
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(void) strcpy(data, pinstance);
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data += 1 + strlen(pinstance);
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(void) strcpy(data, prealm);
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data += 1 + strlen(prealm);
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bcopy((char *) &paddress, data, 4);
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data += 4;
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bcopy((char *) session, data, 8);
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data += 8;
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*(data++) = (char) life;
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/* issue time */
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bcopy((char *) &time_sec, data, 4);
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data += 4;
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(void) strcpy(data, sname);
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data += 1 + strlen(sname);
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(void) strcpy(data, sinstance);
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data += 1 + strlen(sinstance);
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/* guarantee null padded ticket to multiple of 8 bytes */
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bzero(data, 7);
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tkt->length = ((data - ((char *)tkt->dat) + 7)/8)*8;
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/* Check length of ticket */
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if (tkt->length > (sizeof(KTEXT_ST) - 7)) {
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bzero(tkt->dat, tkt->length);
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tkt->length = 0;
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return KFAILURE /* XXX */;
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}
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#ifndef NOENCRYPTION
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key_sched((C_Block *)key,key_s);
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pcbc_encrypt((C_Block *)tkt->dat,(C_Block *)tkt->dat,(long)tkt->length,
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key_s,(C_Block *)key,ENCRYPT);
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#endif
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return 0;
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}
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