99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* $NetBSD: pcnfsd_cache.c,v 1.4 2003/07/16 08:22:01 itojun Exp $ */
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/* RE_SID: @(%)/usr/dosnfs/shades_SCCS/unix/pcnfsd/v2/src/SCCS/s.pcnfsd_cache.c 1.1 91/09/03 12:45:14 SMI */
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/*
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**=====================================================================
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** Copyright (c) 1986,1987,1988,1989,1990,1991 by Sun Microsystems, Inc.
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** @(#)pcnfsd_cache.c 1.1 9/3/91
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**=====================================================================
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*/
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/*
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**=====================================================================
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** I N C L U D E F I L E S E C T I O N *
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** *
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** If your port requires different include files, add a suitable *
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** #define in the customization section, and make the inclusion or *
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** exclusion of the files conditional on this. *
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**=====================================================================
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*/
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#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "common.h"
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#include "pcnfsd.h"
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#include "extern.h"
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/*
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**---------------------------------------------------------------------
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** Misc. variable definitions
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**---------------------------------------------------------------------
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*/
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#ifdef USER_CACHE
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#define CACHE_SIZE 16 /* keep it small, as linear searches are done */
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struct cache {
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int cuid;
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int cgid;
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char cpw[32];
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char cuname[10]; /* keep this even for machines with alignment
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* problems */
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} User_cache[CACHE_SIZE];
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/*
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**---------------------------------------------------------------------
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** User cache support procedures
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**---------------------------------------------------------------------
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*/
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int
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check_cache(name, pw, p_uid, p_gid)
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char *name;
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char *pw;
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int *p_uid;
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int *p_gid;
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{
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int i;
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int c1, c2;
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for (i = 0; i < CACHE_SIZE; i++) {
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if (!strcmp(User_cache[i].cuname, name)) {
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c1 = strlen(pw);
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c2 = strlen(User_cache[i].cpw);
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if ((!c1 && !c2) ||
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!(strcmp(User_cache[i].cpw,
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crypt(pw, User_cache[i].cpw)))) {
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*p_uid = User_cache[i].cuid;
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*p_gid = User_cache[i].cgid;
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return (1);
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}
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User_cache[i].cuname[0] = '\0'; /* nuke entry */
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return (0);
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}
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}
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return (0);
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}
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void
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add_cache_entry(p)
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struct passwd *p;
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{
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int i;
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for (i = CACHE_SIZE - 1; i > 0; i--)
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User_cache[i] = User_cache[i - 1];
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User_cache[0].cuid = p->pw_uid;
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User_cache[0].cgid = p->pw_gid;
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(void) strlcpy(User_cache[0].cpw, p->pw_passwd,
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sizeof(User_cache[0].cpw));
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(void) strlcpy(User_cache[0].cuname, p->pw_name,
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sizeof(User_cache[0].cuname));
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}
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#endif /* USER_CACHE */
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