PAMified passwd(1). Some NIS-related issues remain to be solved, but this
should work for everyday use. Sponsored by: DARPA, NAI Labs
This commit is contained in:
des
parent
b9658dfaf2
commit
1e867a64f1
@ -1,97 +1,14 @@
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# From: @(#)Makefile 8.3 (Berkeley) 4/2/94
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# $FreeBSD$
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# NOPAM is used by PicoBSD
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.if defined(NOPAM)
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PROG= passwd
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SRCS= local_passwd.c passwd.c pw_copy.c pw_util.c
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GENSRCS=yp.h yp_clnt.c yppasswd.h yppasswd_clnt.c \
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yppasswd_private.h yppasswd_private_clnt.c yppasswd_private_xdr.c
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CFLAGS+=-Wall
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DPADD= ${LIBCRYPT} ${LIBUTIL}
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LDADD= -lcrypt -lutil
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.PATH: ${.CURDIR}/../../usr.bin/chpass ${.CURDIR}/../../usr.sbin/vipw
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CFLAGS+= -DLOGIN_CAP -DCRYPT -I. -I${.CURDIR} \
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-I${.CURDIR}/../../usr.sbin/vipw \
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-I${.CURDIR}/../../usr.bin/chpass \
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-I${.CURDIR}/../../lib/libc/gen \
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-Dyp_error=warnx -DLOGGING
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.else
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PROG= passwd
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SRCS= local_passwd.c passwd.c pw_copy.c pw_util.c pw_yp.c \
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yp_passwd.c ypxfr_misc.c ${GENSRCS}
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GENSRCS=yp.h yp_clnt.c yppasswd.h yppasswd_clnt.c \
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yppasswd_private.h yppasswd_private_clnt.c yppasswd_private_xdr.c
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CFLAGS+=-Wall
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DPADD= ${LIBCRYPT} ${LIBRPCSVC} ${LIBUTIL}
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LDADD= -lcrypt -lrpcsvc -lutil
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.PATH: ${.CURDIR}/../../usr.bin/chpass ${.CURDIR}/../../usr.sbin/vipw \
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${.CURDIR}/../../libexec/ypxfr \
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${.CURDIR}/../../usr.sbin/rpc.yppasswdd
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CFLAGS+= -DLOGIN_CAP -DCRYPT -DYP -I. -I${.CURDIR} \
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-I${.CURDIR}/../../usr.sbin/vipw \
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-I${.CURDIR}/../../usr.bin/chpass \
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-I${.CURDIR}/../../libexec/ypxfr \
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-I${.CURDIR}/../../usr.sbin/rpc.yppasswdd \
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-I${.CURDIR}/../../lib/libc/gen \
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-Dyp_error=warnx -DLOGGING
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.endif
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CLEANFILES= ${GENSRCS}
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RPCGEN= rpcgen -C
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RPCSRC= ${DESTDIR}/usr/include/rpcsvc/yp.x
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RPCSRC_PW= ${DESTDIR}/usr/include/rpcsvc/yppasswd.x
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RPCSRC_PRIV= ${.CURDIR}/../../usr.sbin/rpc.yppasswdd/yppasswd_private.x
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yp.h: ${RPCSRC}
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${RPCGEN} -h -o ${.TARGET} ${RPCSRC}
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yp_clnt.c: ${RPCSRC} yp.h
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${RPCGEN} -l -o ${.TARGET} ${RPCSRC}
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yppasswd.h: ${RPCSRC_PW}
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${RPCGEN} -h -o ${.TARGET} ${RPCSRC_PW}
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yppasswd_clnt.c: ${RPCSRC_PW}
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${RPCGEN} -l -o ${.TARGET} ${RPCSRC_PW}
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yppasswd_private.h: ${RPCSRC_PRIV}
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${RPCGEN} -h -o ${.TARGET} ${RPCSRC_PRIV}
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yppasswd_private_xdr.c: ${RPCSRC_PRIV}
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${RPCGEN} -c -o ${.TARGET} ${RPCSRC_PRIV}
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yppasswd_private_clnt.c: ${RPCSRC_PRIV}
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${RPCGEN} -l -o ${.TARGET} ${RPCSRC_PRIV}
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BINOWN= root
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BINMODE=4555
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LINKS=${BINDIR}/passwd ${BINDIR}/yppasswd
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MLINKS=passwd.1 yppasswd.1
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.if exists(${DESTDIR}${LIBDIR}/libkrb.a) && !defined(NOCRYPT) && !defined(NO_OPENSSL) && defined(MAKE_KERBEROS4)
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SRCS+= kpasswd_standalone.c
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.PATH: ${.CURDIR}/../../usr.bin/chpass ${.CURDIR}/../../usr.sbin/vipw \
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${.CURDIR}/../../usr.bin/passwd \
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${.CURDIR}/../../crypto/kerberosIV/kadmin
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CFLAGS+= -DKERBEROS
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# XXX not defined: ${LIBKADM}, ${LIBCOM_ERR}
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DPADD= ${LIBKADM} ${LIBKRB} ${LIBCRYPTO} ${LIBCRYPT} ${LIBRPCSVC} ${LIBCOM_ERR} ${LIBUTIL}
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LDADD= -lkadm -lkrb -lcrypto -lcrypt -lrpcsvc -lcom_err -lutil
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DISTRIBUTION= krb4
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.endif
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PROG = passwd
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BINOWN = root
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BINMODE = 4555
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DPADD = ${LIBPAM}
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LDADD = ${MINUSLPAM}
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LINKS = ${BINDIR}/passwd ${BINDIR}/yppasswd
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MLINKS = passwd.1 yppasswd.1
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WARNS ?= 4
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beforeinstall:
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.for i in passwd yppasswd
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@ -1,6 +1,11 @@
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/*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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/*-
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* Copyright (c) 2002 Networks Associates Technologies, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by ThinkSec AS and
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* NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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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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@ -10,18 +15,14 @@
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University 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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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE REGENTS OR CONTRIBUTORS BE LIABLE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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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@ -29,222 +30,136 @@
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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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* $FreeBSD$
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1988, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)passwd.c 8.3 (Berkeley) 4/2/94";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <err.h>
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#include <errno.h>
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#include <libutil.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#include <unistd.h>
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#ifdef YP
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#include <pwd.h>
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#include <pw_yp.h>
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#include <rpcsvc/yp.h>
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int __use_yp = 0;
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int yp_errno = YP_TRUE;
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extern int yp_passwd( char * );
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#endif
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#include <security/pam_appl.h>
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#include <security/openpam.h>
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#ifdef KERBEROS
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#include "krb.h"
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#endif
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static pam_handle_t *pamh;
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static struct pam_conv pamc = {
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openpam_ttyconv,
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NULL
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};
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#include "extern.h"
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static char *yp_domain;
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static char *yp_host;
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static void usage(void);
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int use_local_passwd = 0;
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static void
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usage(void)
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{
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fprintf(stderr, "Usage: passwd [-ly] [-d domain] [-h host] [user]\n");
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exit(1);
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}
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int
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main(argc, argv)
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int argc;
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char **argv;
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main(int argc, char *argv[])
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{
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int ch;
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char *uname;
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#ifdef KERBEROS
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char *iflag = 0, *rflag = 0, *uflag = 0;
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char *k;
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#endif
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char hostname[MAXHOSTNAMELEN];
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struct passwd *pwd;
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int o, pam_err;
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uid_t uid;
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#ifdef YP
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#ifdef KERBEROS
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char realm[REALM_SZ];
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#define OPTIONS "d:h:lysfoi:r:u:"
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#else
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#define OPTIONS "d:h:lysfo"
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#endif
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#else
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#ifdef KERBEROS
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char realm[REALM_SZ];
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#define OPTIONS "li:r:u:"
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#else
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#define OPTIONS "l"
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#endif
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#endif
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#ifdef YP
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int res = 0;
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if (strstr(argv[0], "yppasswd")) __use_yp = 1;
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#endif
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while ((ch = getopt(argc, argv, OPTIONS)) != -1) {
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switch (ch) {
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case 'l': /* change local password file */
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use_local_passwd = 1;
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while ((o = getopt(argc, argv, "d:h:loy")) != -1)
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switch (o) {
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case 'd':
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yp_domain = optarg;
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break;
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#ifdef KERBEROS
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case 'i':
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iflag = optarg;
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break;
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case 'r':
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rflag = optarg;
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break;
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case 'u':
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uflag = optarg;
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break;
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#endif /* KERBEROS */
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#ifdef YP
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case 'y': /* Change NIS password */
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__use_yp = 1;
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break;
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case 'd': /* Specify NIS domain. */
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#ifdef PARANOID
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if (!getuid()) {
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#endif
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yp_domain = optarg;
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if (yp_server == NULL)
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yp_server = "localhost";
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#ifdef PARANOID
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} else {
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warnx("only the super-user may use the -d flag");
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}
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#endif
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break;
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case 'h': /* Specify NIS server. */
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#ifdef PARANOID
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if (!getuid()) {
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#endif
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yp_server = optarg;
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#ifdef PARANOID
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} else {
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warnx("only the super-user may use the -h flag");
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}
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#endif
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case 'h':
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yp_host = optarg;
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break;
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case 'l':
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case 'o':
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force_old++;
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case 'y':
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/* compatibility */
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break;
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#endif
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default:
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case '?':
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if ((uname = getlogin()) == NULL)
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err(1, "getlogin");
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uid = getuid();
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switch(argc) {
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switch (argc) {
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case 0:
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if ((pwd = getpwuid(uid)) == NULL)
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errx(1, "who are you?");
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break;
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case 1:
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uname = argv[0];
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if ((pwd = getpwnam(*argv)) == NULL)
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errx(1, "%s: no such user", *argv);
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break;
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default:
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usage();
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}
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#ifdef YP
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/*
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* If NIS is turned on in the password database, use it, else punt.
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*/
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#ifdef KERBEROS
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if (__use_yp || (iflag == NULL && rflag == NULL && uflag == NULL)) {
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#endif
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res = use_yp(uname, 0, 0);
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if (res == USER_YP_ONLY) {
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if (!use_local_passwd) {
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exit(yp_passwd(uname));
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} else {
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/*
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* Reject -l flag if NIS is turned on and the user
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* doesn't exist in the local password database.
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*/
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errx(1, "unknown local user: %s", uname);
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}
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} else if (res == USER_LOCAL_ONLY) {
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/*
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* Reject -y flag if user only exists locally.
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*/
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if (__use_yp)
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errx(1, "unknown NIS user: %s", uname);
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} else if (res == USER_YP_AND_LOCAL) {
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if (!use_local_passwd && (yp_in_pw_file || __use_yp))
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exit(yp_passwd(uname));
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}
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#ifdef KERBEROS
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if (uid != 0 && uid != pwd->pw_uid)
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errx(1, "permission denied");
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/* check where the user's from */
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switch (pwd->pw_fields & _PWF_SOURCE) {
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case _PWF_FILES:
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fprintf(stderr, "Changing local password for %s\n",
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pwd->pw_name);
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break;
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case _PWF_NIS:
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fprintf(stderr, "Changing NIS password for %s\n",
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pwd->pw_name);
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break;
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case _PWF_HESIOD:
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errx(1, "can't change Hesiod password");
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break;
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default:
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/* specieist! */
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errx(1, "can't change little green men's passwords (0x%x)",
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pwd->pw_fields);
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}
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#endif
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#endif
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if (!use_local_passwd) {
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#ifdef KERBEROS
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k = auth_getval("auth_list");
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if (k && strstr(k, "kerberos"))
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if(krb_get_lrealm(realm, 0) == KSUCCESS) {
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setuid(getuid());
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fprintf(stderr, "realm %s\n", realm);
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exit(krb_passwd(argv[0], iflag, rflag, uflag));
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}
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#endif
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}
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exit(local_passwd(uname));
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}
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static void
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usage()
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{
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#ifdef YP
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#ifdef KERBEROS
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fprintf(stderr, "%s\n%s\n",
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"usage: passwd [-l] [-i instance] [-r realm] [-u fullname]",
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" passwd [-l] [-y] [-o] [-d domain [-h host]] [user]");
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#else
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(void)fprintf(stderr,
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"usage: passwd [-l] [-y] [-o] [-d domain [-h host]] [user]\n");
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#endif
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#else
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#ifdef KERBEROS
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fprintf(stderr,
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"usage: passwd [-l] [-i instance] [-r realm] [-u fullname] [user]\n");
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#else
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(void)fprintf(stderr, "usage: passwd user\n");
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#endif
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#endif
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exit(1);
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#define pam_check(func) do { \
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if (pam_err != PAM_SUCCESS) { \
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if (pam_err == PAM_AUTH_ERR || pam_err == PAM_PERM_DENIED || \
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pam_err == PAM_AUTHTOK_RECOVERY_ERR) \
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warnx("sorry"); \
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else \
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warnx("%s(): %s", func, pam_strerror(pamh, pam_err)); \
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goto end; \
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} \
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} while (0)
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/* initialize PAM */
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pam_err = pam_start("passwd", pwd->pw_name, &pamc, &pamh);
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pam_check("pam_start");
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pam_err = pam_set_item(pamh, PAM_TTY, ttyname(STDERR_FILENO));
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pam_check("pam_set_item");
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gethostname(hostname, sizeof hostname);
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pam_err = pam_set_item(pamh, PAM_RHOST, hostname);
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pam_check("pam_set_item");
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pam_err = pam_set_item(pamh, PAM_RUSER, getlogin());
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pam_check("pam_set_item");
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/* set YP domain and host */
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pam_err = pam_set_data(pamh, "yp_domain", yp_domain, NULL);
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pam_check("pam_set_data");
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pam_err = pam_set_data(pamh, "yp_server", yp_host, NULL);
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pam_check("pam_set_data");
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/* set new password */
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pam_err = pam_chauthtok(pamh, 0);
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pam_check("pam_chauthtok");
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end:
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pam_end(pamh, pam_err);
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exit(pam_err == PAM_SUCCESS ? 0 : 1);
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}
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Reference in New Issue
Block a user