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/*
* tkt_string.c
*
* Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
* of Technology.
*
* For copying and distribution information, please see the file
* <mit-copyright.h>.
*/
#include "mit-copyright.h"
#include "krb.h"
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#else
char *getenv();
#endif
#ifdef _WINDOWS
typedef unsigned long uid_t;
uid_t getuid(void) { return 0; }
#endif /* _WINDOWS */
/*
* 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()
{
char *env;
uid_t getuid();
if (!*krb_ticket_string) {
env = getenv("KRBTKFILE");
if (env) {
(void) strncpy(krb_ticket_string, env,
sizeof(krb_ticket_string)-1);
krb_ticket_string[sizeof(krb_ticket_string)-1] = '\0';
} else {
/* 32 bits of signed integer will always fit in 11 characters
(including the sign), so no need to worry about overflow */
(void) sprintf(krb_ticket_string, "%s%d",TKT_ROOT,(int) 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(val)
char *val;
{
(void) strncpy(krb_ticket_string, val, sizeof(krb_ticket_string)-1);
krb_ticket_string[sizeof(krb_ticket_string)-1] = '\0';
}
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