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/* $NetBSD: pcnfsd_cache.c,v 1.2 1995/07/25 22:20:37 gwr Exp $ */
/* RE_SID: @(%)/usr/dosnfs/shades_SCCS/unix/pcnfsd/v2/src/SCCS/s.pcnfsd_cache.c 1.1 91/09/03 12:45:14 SMI */
/*
**=====================================================================
** Copyright (c) 1986,1987,1988,1989,1990,1991 by Sun Microsystems, Inc.
** @(#)pcnfsd_cache.c 1.1 9/3/91
**=====================================================================
*/
#include "common.h"
/*
**=====================================================================
** I N C L U D E F I L E S E C T I O N *
** *
** If your port requires different include files, add a suitable *
** #define in the customization section, and make the inclusion or *
** exclusion of the files conditional on this. *
**=====================================================================
*/
#include "pcnfsd.h"
#include <stdio.h>
#include <pwd.h>
#include <errno.h>
#include <string.h>
extern char *crypt();
/*
**---------------------------------------------------------------------
** Misc. variable definitions
**---------------------------------------------------------------------
*/
extern int errno;
#ifdef USER_CACHE
#define CACHE_SIZE 16 /* keep it small, as linear searches are
* done */
struct cache
{
int cuid;
int cgid;
char cpw[_PASSWORD_LEN];
char cuname[10]; /* keep this even for machines
* with alignment problems */
}User_cache[CACHE_SIZE];
/*
**---------------------------------------------------------------------
** User cache support procedures
**---------------------------------------------------------------------
*/
int
check_cache(name, pw, p_uid, p_gid)
char *name;
char *pw;
int *p_uid;
int *p_gid;
{
int i;
int c1, c2;
for (i = 0; i < CACHE_SIZE; i++) {
if (!strcmp(User_cache[i].cuname, name)) {
c1 = strlen(pw);
c2 = strlen(User_cache[i].cpw);
if ((!c1 && !c2) ||
!(strcmp(User_cache[i].cpw,
crypt(pw, User_cache[i].cpw)))) {
*p_uid = User_cache[i].cuid;
*p_gid = User_cache[i].cgid;
return (1);
}
User_cache[i].cuname[0] = '\0'; /* nuke entry */
return (0);
}
}
return (0);
}
void
add_cache_entry(p)
struct passwd *p;
{
int i;
for (i = CACHE_SIZE - 1; i > 0; i--)
User_cache[i] = User_cache[i - 1];
User_cache[0].cuid = p->pw_uid;
User_cache[0].cgid = p->pw_gid;
(void)strncpy(User_cache[0].cpw, p->pw_passwd, sizeof User_cache[0].cpw-1);
User_cache[0].cpw[sizeof User_cache[0].cpw-1] = '\0';
(void)strncpy(User_cache[0].cuname, p->pw_name, sizeof User_cache[0].cuname-1);
User_cache[0].cuname[sizeof User_cache[0].cuname-1] = '\0';
}
#endif /* USER_CACHE */
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