144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/*
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* Copyright 1990 - 1994, Julianne Frances Haugh
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#ifdef NDBM /*{*/
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#include "rcsid.h"
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RCSID("$Id: pwdbm.c,v 1.4 1997/12/14 20:07:19 marekm Exp $")
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#include <sys/types.h>
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#include <stdio.h>
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#include <pwd.h>
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#include "prototypes.h"
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#include "defines.h"
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#include <ndbm.h>
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extern DBM *pw_dbm;
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/*
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* pw_dbm_update
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*
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* Updates the DBM password files, if they exist.
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*/
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int
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pw_dbm_update(const struct passwd *pw)
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{
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datum key;
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datum content;
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char data[BUFSIZ];
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int len;
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static int once;
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if (! once) {
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if (! pw_dbm)
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setpwent ();
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once++;
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}
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if (! pw_dbm)
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return 0;
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len = pw_pack (pw, data);
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content.dsize = len;
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content.dptr = data;
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key.dsize = strlen (pw->pw_name);
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key.dptr = pw->pw_name;
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if (dbm_store(pw_dbm, key, content, DBM_REPLACE))
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return 0;
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/*
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* XXX - on systems with 16-bit UIDs (such as Linux/x86)
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* name "aa" and UID 24929 will give the same key. This
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* happens only rarely, but code which only "works most
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* of the time" is not good enough...
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*
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* This needs to be fixed in several places (pwdbm.c,
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* grdbm.c, pwent.c, grent.c). Fixing it will cause
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* incompatibility with existing dbm files.
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*
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* Summary: don't use this stuff for now. --marekm
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*/
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key.dsize = sizeof pw->pw_uid;
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key.dptr = (char *) &pw->pw_uid;
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if (dbm_store(pw_dbm, key, content, DBM_REPLACE))
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return 0;
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return 1;
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}
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/*
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* pw_dbm_remove
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*
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* Removes the DBM password entry, if it exists.
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*/
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int
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pw_dbm_remove(const struct passwd *pw)
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{
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datum key;
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static int once;
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char data[BUFSIZ];
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if (! once) {
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if (! pw_dbm)
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setpwent ();
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once++;
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}
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if (! pw_dbm)
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return 0;
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key.dsize = strlen (pw->pw_name);
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key.dptr = pw->pw_name;
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if (dbm_delete (pw_dbm, key))
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return 0;
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key.dsize = sizeof pw->pw_uid;
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key.dptr = (char *) &pw->pw_uid;
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if (dbm_delete (pw_dbm, key))
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return 0;
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return 1;
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}
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int
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pw_dbm_present(void)
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{
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return (access(PASSWD_PAG_FILE, F_OK) == 0);
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}
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#endif /* NDBM */
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