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/* $Id: krb_lib.c,v 1.2 1996/09/16 18:48:51 millert Exp $ */
/*-
* 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 "kdb_locl.h"
#ifdef DEBUG
extern int debug;
extern char *progname;
long kerb_debug;
#endif
static int init = 0;
/*
* initialization routine for data base
*/
int
kerb_init()
{
#ifdef DEBUG
if (!init) {
char *dbg = getenv("KERB_DBG");
if (dbg)
sscanf(dbg, "%d", &kerb_debug);
init = 1;
}
#endif
kerb_db_init();
#ifdef CACHE
kerb_cache_init();
#endif
/* successful init, return 0, else errcode */
return (0);
}
/*
* finalization routine for database -- NOTE: MUST be called by any
* program using kerb_init. ALSO will have to be modified to finalize
* caches, if they're ever really implemented.
*/
void
kerb_fini()
{
kerb_db_fini();
}
/*
* look up a principal in the cache or data base returns number of
* principals found
*/
int
kerb_get_principal(name, inst, principal, max, more)
char *name; /* could have wild card */
char *inst; /* could have wild card */
Principal *principal;
unsigned int max; /* max number of name structs to return */
int *more; /* more tuples than room for */
{
int found = 0;
#ifdef CACHE
static int wild = 0;
#endif
if (!init)
kerb_init();
#ifdef DEBUG
if (kerb_debug & 1)
fprintf(stderr, "\n%s: kerb_get_principal for %s %s max = %d\n",
progname, name, inst, max);
#endif
/*
* if this is a request including a wild card, have to go to db
* since the cache may not be exhaustive.
*/
/* clear the principal area */
bzero((char *) principal, max * sizeof(Principal));
#ifdef CACHE
/*
* so check to see if the name contains a wildcard "*" or "?", not
* preceeded by a backslash.
*/
wild = 0;
if (index(name, '*') || index(name, '?') ||
index(inst, '*') || index(inst, '?'))
wild = 1;
if (!wild) {
/* try the cache first */
found = kerb_cache_get_principal(name, inst, principal, max, more);
if (found)
return (found);
}
#endif
/* If we didn't try cache, or it wasn't there, try db */
found = kerb_db_get_principal(name, inst, principal, max, more);
/* try to insert principal(s) into cache if it was found */
#ifdef CACHE
if (found) {
kerb_cache_put_principal(principal, found);
}
#endif
return (found);
}
/* principals */
int
kerb_put_principal(principal, n)
Principal *principal;
unsigned int n; /* number of principal structs to write */
{
struct tm *tp;
/* set mod date */
principal->mod_date = time((time_t *)0);
/* and mod date string */
tp = k_localtime(&principal->mod_date);
(void) snprintf(principal->mod_date_txt, sizeof(principal->mod_date_txt),
"%4d-%2d-%2d",
tp->tm_year > 1900 ? tp->tm_year : tp->tm_year + 1900,
tp->tm_mon + 1, tp->tm_mday); /* January is 0, not 1 */
#ifdef DEBUG
if (kerb_debug & 1) {
int i;
fprintf(stderr, "\nkerb_put_principal...");
for (i = 0; i < n; i++) {
krb_print_principal(&principal[i]);
}
}
#endif
/* write database */
if (kerb_db_put_principal(principal, n) < 0) {
#ifdef DEBUG
if (kerb_debug & 1)
fprintf(stderr, "\n%s: kerb_db_put_principal err", progname);
/* watch out for cache */
#endif
return -1;
}
#ifdef CACHE
/* write cache */
if (!kerb_cache_put_principal(principal, n)) {
#ifdef DEBUG
if (kerb_debug & 1)
fprintf(stderr, "\n%s: kerb_cache_put_principal err", progname);
#endif
return -1;
}
#endif
return 0;
}
int
kerb_get_dba(name, inst, dba, max, more)
char *name; /* could have wild card */
char *inst; /* could have wild card */
Dba *dba;
unsigned int max; /* max number of name structs to return */
int *more; /* more tuples than room for */
{
int found = 0;
#ifdef CACHE
static int wild = 0;
#endif
if (!init)
kerb_init();
#ifdef DEBUG
if (kerb_debug & 1)
fprintf(stderr, "\n%s: kerb_get_dba for %s %s max = %d\n",
progname, name, inst, max);
#endif
/*
* if this is a request including a wild card, have to go to db
* since the cache may not be exhaustive.
*/
/* clear the dba area */
bzero((char *) dba, max * sizeof(Dba));
#ifdef CACHE
/*
* so check to see if the name contains a wildcard "*" or "?", not
* preceeded by a backslash.
*/
wild = 0;
if (index(name, '*') || index(name, '?') ||
index(inst, '*') || index(inst, '?'))
wild = 1;
if (!wild) {
/* try the cache first */
found = kerb_cache_get_dba(name, inst, dba, max, more);
if (found)
return (found);
}
#endif
/* If we didn't try cache, or it wasn't there, try db */
found = kerb_db_get_dba(name, inst, dba, max, more);
#ifdef CACHE
/* try to insert dba(s) into cache if it was found */
if (found) {
kerb_cache_put_dba(dba, found);
}
#endif
return (found);
}
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