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/* $OpenBSD: tkt_string.c,v 1.8 1998/05/18 00:54:02 art Exp $ */
/* $KTH: tkt_string.c,v 1.13 1998/04/04 17:56:53 assar Exp $ */
/*
* This source code is no longer held under any constraint of USA
* `cryptographic laws' since it was exported legally. The cryptographic
* functions were removed from the code and a "Bones" distribution was
* made. A Commodity Jurisdiction Request #012-94 was filed with the
* USA State Department, who handed it to the Commerce department. The
* code was determined to fall under General License GTDA under ECCN 5D96G,
* and hence exportable. The cryptographic interfaces were re-added by Eric
* Young, and then KTH proceeded to maintain the code in the free world.
*
*/
/*
* Copyright (C) 1989 by the Massachusetts Institute of Technology
*
* Export of this software from the United States of America is assumed
* to require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*/
#include "krb_locl.h"
/*
* This routine is used to generate the name of the file that holds
* the user's cache of server tickets and associated session keys.
*
* If it is set, krb_ticket_string contains the ticket file name.
* Otherwise, the filename is constructed as follows:
*
* If it is set, the environment variable "KRBTKFILE" will be used as
* the ticket file name. Otherwise TKT_ROOT (defined in "krb.h") and
* the user's uid are concatenated to produce the ticket file name
* (e.g., "/tmp/tkt123"). A pointer to the string containing the ticket
* file name is returned.
*/
static char krb_ticket_string[MAXPATHLEN] = "";
char *
tkt_string(void)
{
char *env;
if (krb_ticket_string[0] == '\0') {
if ((env = getenv("KRBTKFILE"))) {
strncpy(krb_ticket_string, env,
sizeof(krb_ticket_string)-1);
krb_ticket_string[sizeof(krb_ticket_string)-1] = '\0';
} else {
snprintf(krb_ticket_string, sizeof(krb_ticket_string),
"%s%u",TKT_ROOT,(unsigned)getuid());
}
}
return krb_ticket_string;
}
/*
* This routine is used to set the name of the file that holds the user's
* cache of server tickets and associated session keys.
*
* The value passed in is copied into local storage.
*
* NOTE: This routine should be called during initialization, before other
* Kerberos routines are called; otherwise tkt_string() above may be called
* and return an undesired ticket file name until this routine is called.
*/
void
krb_set_tkt_string(const char *val)
{
strncpy(krb_ticket_string, val, sizeof(krb_ticket_string)-1);
krb_ticket_string[sizeof(krb_ticket_string)-1] = '\0';
return;
}
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