5e53a4f90f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
316 lines
8.8 KiB
C
316 lines
8.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2002 Networks Associates Technology, 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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* 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. 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 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 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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* 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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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <errno.h>
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#include <netconfig.h>
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#include <netdb.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <rpcsvc/ypclnt.h>
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#include <rpcsvc/yppasswd.h>
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#include "ypclnt.h"
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#include "yppasswd_private.h"
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static int yppasswd_remote(ypclnt_t *, const struct passwd *, const char *);
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static int yppasswd_local(ypclnt_t *, const struct passwd *);
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/*
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* Determines the availability of rpc.yppasswdd. Returns -1 for not
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* available (or unable to determine), 0 for available, 1 for available in
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* master mode.
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*/
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int
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ypclnt_havepasswdd(ypclnt_t *ypclnt)
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{
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struct netconfig *nc = NULL;
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void *localhandle = NULL;
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CLIENT *clnt = NULL;
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int ret;
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/* check if rpc.yppasswdd is running */
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if (getrpcport(ypclnt->server, YPPASSWDPROG,
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YPPASSWDPROC_UPDATE, IPPROTO_UDP) == 0) {
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ypclnt_error(ypclnt, __func__, "no rpc.yppasswdd on server");
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return (-1);
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}
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/* if we're not root, use remote method */
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if (getuid() != 0)
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return (0);
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/* try to connect to rpc.yppasswdd */
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localhandle = setnetconfig();
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while ((nc = getnetconfig(localhandle)) != NULL) {
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if (nc->nc_protofmly != NULL &&
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strcmp(nc->nc_protofmly, NC_LOOPBACK) == 0)
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break;
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}
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if (nc == NULL) {
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ypclnt_error(ypclnt, __func__,
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"getnetconfig: %s", nc_sperror());
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ret = 0;
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goto done;
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}
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if ((clnt = clnt_tp_create(NULL, MASTER_YPPASSWDPROG,
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MASTER_YPPASSWDVERS, nc)) == NULL) {
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ypclnt_error(ypclnt, __func__,
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"failed to connect to rpc.yppasswdd: %s",
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clnt_spcreateerror(ypclnt->server));
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ret = 0;
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goto done;
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} else
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ret = 1;
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done:
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if (clnt != NULL) {
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clnt_destroy(clnt);
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}
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endnetconfig(localhandle);
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return (ret);
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}
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/*
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* Updates the NIS user information for the specified user.
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*/
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int
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ypclnt_passwd(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
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{
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switch (ypclnt_havepasswdd(ypclnt)) {
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case 0:
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return (yppasswd_remote(ypclnt, pwd, passwd));
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case 1:
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return (yppasswd_local(ypclnt, pwd));
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default:
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return (-1);
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}
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}
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/*
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* yppasswd_remote and yppasswd_local are quite similar but still
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* sufficiently different that merging them into one makes the code
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* significantly less readable, IMHO, so we keep them separate.
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*/
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static int
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yppasswd_local(ypclnt_t *ypclnt, const struct passwd *pwd)
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{
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struct master_yppasswd yppwd;
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struct rpc_err rpcerr;
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struct netconfig *nc = NULL;
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void *localhandle = NULL;
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CLIENT *clnt = NULL;
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int ret, *result;
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/* fill the master_yppasswd structure */
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memset(&yppwd, 0, sizeof yppwd);
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yppwd.newpw.pw_uid = pwd->pw_uid;
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yppwd.newpw.pw_gid = pwd->pw_gid;
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yppwd.newpw.pw_change = pwd->pw_change;
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yppwd.newpw.pw_expire = pwd->pw_expire;
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yppwd.newpw.pw_fields = pwd->pw_fields;
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yppwd.oldpass = strdup("");
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yppwd.domain = strdup(ypclnt->domain);
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if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
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(yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
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(yppwd.newpw.pw_class = strdup(pwd->pw_class)) == NULL ||
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(yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
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(yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
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(yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL) {
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ypclnt_error(ypclnt, __func__, strerror(errno));
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ret = -1;
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goto done;
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}
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/* connect to rpc.yppasswdd */
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localhandle = setnetconfig();
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while ((nc = getnetconfig(localhandle)) != NULL) {
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if (nc->nc_protofmly != NULL &&
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strcmp(nc->nc_protofmly, NC_LOOPBACK) == 0)
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break;
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}
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if (nc == NULL) {
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ypclnt_error(ypclnt, __func__,
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"getnetconfig: %s", nc_sperror());
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ret = -1;
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goto done;
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}
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if ((clnt = clnt_tp_create(NULL, MASTER_YPPASSWDPROG,
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MASTER_YPPASSWDVERS, nc)) == NULL) {
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ypclnt_error(ypclnt, __func__,
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"failed to connect to rpc.yppasswdd: %s",
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clnt_spcreateerror(ypclnt->server));
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ret = -1;
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goto done;
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}
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clnt->cl_auth = authunix_create_default();
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/* request the update */
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result = yppasswdproc_update_master_1(&yppwd, clnt);
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/* check for RPC errors */
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clnt_geterr(clnt, &rpcerr);
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if (rpcerr.re_status != RPC_SUCCESS) {
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ypclnt_error(ypclnt, __func__,
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"NIS password update failed: %s",
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clnt_sperror(clnt, ypclnt->server));
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ret = -1;
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goto done;
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}
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/* check the result of the update */
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if (result == NULL || *result != 0) {
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ypclnt_error(ypclnt, __func__,
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"NIS password update failed");
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/* XXX how do we get more details? */
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ret = -1;
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goto done;
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}
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ypclnt_error(ypclnt, NULL, NULL);
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ret = 0;
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done:
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if (clnt != NULL) {
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auth_destroy(clnt->cl_auth);
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clnt_destroy(clnt);
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}
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endnetconfig(localhandle);
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free(yppwd.newpw.pw_name);
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if (yppwd.newpw.pw_passwd != NULL) {
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memset(yppwd.newpw.pw_passwd, 0, strlen(yppwd.newpw.pw_passwd));
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free(yppwd.newpw.pw_passwd);
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}
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free(yppwd.newpw.pw_class);
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free(yppwd.newpw.pw_gecos);
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free(yppwd.newpw.pw_dir);
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free(yppwd.newpw.pw_shell);
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if (yppwd.oldpass != NULL) {
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memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));
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free(yppwd.oldpass);
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}
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return (ret);
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}
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static int
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yppasswd_remote(ypclnt_t *ypclnt, const struct passwd *pwd, const char *passwd)
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{
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struct yppasswd yppwd;
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struct rpc_err rpcerr;
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CLIENT *clnt = NULL;
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int ret, *result;
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/* fill the yppasswd structure */
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memset(&yppwd, 0, sizeof yppwd);
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yppwd.newpw.pw_uid = pwd->pw_uid;
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yppwd.newpw.pw_gid = pwd->pw_gid;
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if ((yppwd.newpw.pw_name = strdup(pwd->pw_name)) == NULL ||
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(yppwd.newpw.pw_passwd = strdup(pwd->pw_passwd)) == NULL ||
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(yppwd.newpw.pw_gecos = strdup(pwd->pw_gecos)) == NULL ||
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(yppwd.newpw.pw_dir = strdup(pwd->pw_dir)) == NULL ||
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(yppwd.newpw.pw_shell = strdup(pwd->pw_shell)) == NULL ||
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(yppwd.oldpass = strdup(passwd ? passwd : "")) == NULL) {
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ypclnt_error(ypclnt, __func__, strerror(errno));
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ret = -1;
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goto done;
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}
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/* connect to rpc.yppasswdd */
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clnt = clnt_create(ypclnt->server, YPPASSWDPROG, YPPASSWDVERS, "udp");
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if (clnt == NULL) {
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ypclnt_error(ypclnt, __func__,
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"failed to connect to rpc.yppasswdd: %s",
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clnt_spcreateerror(ypclnt->server));
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ret = -1;
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goto done;
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}
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clnt->cl_auth = authunix_create_default();
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/* request the update */
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result = yppasswdproc_update_1(&yppwd, clnt);
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/* check for RPC errors */
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clnt_geterr(clnt, &rpcerr);
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if (rpcerr.re_status != RPC_SUCCESS) {
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ypclnt_error(ypclnt, __func__,
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"NIS password update failed: %s",
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clnt_sperror(clnt, ypclnt->server));
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ret = -1;
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goto done;
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}
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/* check the result of the update */
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if (result == NULL || *result != 0) {
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ypclnt_error(ypclnt, __func__,
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"NIS password update failed");
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/* XXX how do we get more details? */
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ret = -1;
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goto done;
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}
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ypclnt_error(ypclnt, NULL, NULL);
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ret = 0;
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done:
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if (clnt != NULL) {
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auth_destroy(clnt->cl_auth);
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clnt_destroy(clnt);
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}
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free(yppwd.newpw.pw_name);
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if (yppwd.newpw.pw_passwd != NULL) {
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memset(yppwd.newpw.pw_passwd, 0, strlen(yppwd.newpw.pw_passwd));
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free(yppwd.newpw.pw_passwd);
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}
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free(yppwd.newpw.pw_gecos);
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free(yppwd.newpw.pw_dir);
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free(yppwd.newpw.pw_shell);
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if (yppwd.oldpass != NULL) {
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memset(yppwd.oldpass, 0, strlen(yppwd.oldpass));
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free(yppwd.oldpass);
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}
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return (ret);
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}
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