/* * $Source: /usr/src/kerberosIV/krb/RCS/tkt_string.c,v $ * $Author: kfall $ * * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute * of Technology. * * For copying and distribution information, please see the file * <mit-copyright.h>. */ #ifndef lint static char *rcsid_tkt_string_c = "$Header: /usr/src/kerberosIV/krb/RCS/tkt_string.c,v 4.7 90/06/25 20:57:33 kfall Exp $"; #endif /* lint */ #include <mit-copyright.h> #include <stdio.h> #include <sys/types.h> #include <des.h> #include <krb.h> #include <string.h> #include <sys/param.h> char *getenv(); /* * 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) { if (env = getenv("KRBTKFILE")) { (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,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'; return; }