51956e9393
YP server. This is required if the passwd database is to stay in sync if this program is run on the YP server. Note, local passwd database operations can still be performed by passing the -l flag.
289 lines
6.8 KiB
C
289 lines
6.8 KiB
C
/* $NetBSD: pw_yp.c,v 1.6 1996/08/09 09:22:18 thorpej Exp $ */
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/*
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* Copyright (c) 1988 The Regents of the University of California.
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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. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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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* 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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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)pw_yp.c 1.0 2/2/93";
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#else
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static char rcsid[] = "$NetBSD: pw_yp.c,v 1.6 1996/08/09 09:22:18 thorpej Exp $";
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#endif
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#endif /* not lint */
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#ifdef YP
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <time.h>
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#include <pwd.h>
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#include <errno.h>
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#include <rpc/rpc.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#define passwd yp_passwd_rec
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#include <rpcsvc/yppasswd.h>
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#undef passwd
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static char *domain;
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pw_yp(pw, uid)
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struct passwd *pw;
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uid_t uid;
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{
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char *master;
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char *pp;
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int r, rpcport, status;
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struct yppasswd yppasswd;
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struct timeval tv;
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CLIENT *client;
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extern char *getpass();
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/*
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* Get local domain
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*/
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if (!domain && (r = yp_get_default_domain(&domain)))
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errx(1, "can't get local YP domain. Reason: %s",
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yperr_string(r));
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/*
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* Find the host for the passwd map; it should be running
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* the daemon.
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*/
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if ((r = yp_master(domain, "passwd.byname", &master)) != 0) {
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warnx("can't find the master YP server. Reason: %s",
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yperr_string(r));
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return (1);
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}
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/*
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* Ask the portmapper for the port of the daemon.
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*/
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if ((rpcport = getrpcport(master, YPPASSWDPROG, YPPASSWDPROC_UPDATE,
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IPPROTO_UDP)) == 0) {
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warnx("master YP server not running yppasswd daemon.\n\t%s\n",
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"Can't change password.");
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return (1);
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}
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/*
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* Be sure the port is priviledged
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*/
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if (rpcport >= IPPORT_RESERVED) {
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warnx("yppasswd daemon is on an invalid port.");
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return (1);
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}
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/* prompt for old password */
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bzero(&yppasswd, sizeof yppasswd);
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yppasswd.oldpass = "none";
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yppasswd.oldpass = getpass("Old password:");
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if (!yppasswd.oldpass) {
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warnx("Cancelled.");
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return (1);
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}
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/* tell rpc.yppasswdd */
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yppasswd.newpw.pw_name = pw->pw_name;
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yppasswd.newpw.pw_passwd= pw->pw_passwd;
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yppasswd.newpw.pw_uid = pw->pw_uid;
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yppasswd.newpw.pw_gid = pw->pw_gid;
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yppasswd.newpw.pw_gecos = pw->pw_gecos;
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yppasswd.newpw.pw_dir = pw->pw_dir;
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yppasswd.newpw.pw_shell = pw->pw_shell;
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client = clnt_create(master, YPPASSWDPROG, YPPASSWDVERS, "udp");
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if (client==NULL) {
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warnx("cannot contact yppasswdd on %s: Reason: %s",
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master, yperr_string(YPERR_YPBIND));
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return (1);
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}
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client->cl_auth = authunix_create_default();
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tv.tv_sec = 5;
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tv.tv_usec = 0;
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r = clnt_call(client, YPPASSWDPROC_UPDATE,
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xdr_yppasswd, &yppasswd, xdr_int, &status, tv);
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if (r) {
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warnx("rpc to yppasswdd failed.");
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return (1);
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} else if (status)
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printf("Couldn't change YP password.\n");
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else
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printf("%s %s, %s\n",
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"The YP password information has been changed on",
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master, "the master YP passwd server.");
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return (0);
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}
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static char *
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pwskip(p)
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register char *p;
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{
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while (*p && *p != ':' && *p != '\n')
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++p;
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if (*p)
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*p++ = 0;
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return (p);
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}
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static struct passwd *
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interpret(pwent, line)
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struct passwd *pwent;
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char *line;
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{
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register char *p = line;
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register int c;
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pwent->pw_passwd = "*";
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pwent->pw_uid = 0;
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pwent->pw_gid = 0;
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pwent->pw_gecos = "";
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pwent->pw_dir = "";
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pwent->pw_shell = "";
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pwent->pw_change = 0;
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pwent->pw_expire = 0;
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pwent->pw_class = "";
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/* line without colon separators is no good, so ignore it */
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if(!strchr(p,':'))
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return(NULL);
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pwent->pw_name = p;
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p = pwskip(p);
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pwent->pw_passwd = p;
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p = pwskip(p);
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pwent->pw_uid = (uid_t)strtoul(p, NULL, 10);
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p = pwskip(p);
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pwent->pw_gid = (gid_t)strtoul(p, NULL, 10);
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p = pwskip(p);
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pwent->pw_gecos = p;
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p = pwskip(p);
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pwent->pw_dir = p;
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p = pwskip(p);
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pwent->pw_shell = p;
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while (*p && *p != '\n')
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p++;
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*p = '\0';
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return (pwent);
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}
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struct passwd *
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ypgetpwnam(nam)
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char *nam;
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{
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static struct passwd pwent;
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static char line[1024];
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char *val;
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int reason, vallen;
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/*
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* Get local domain
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*/
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if (!domain && (reason = yp_get_default_domain(&domain)))
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errx(1, "can't get local YP domain. Reason: %s",
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yperr_string(reason));
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reason = yp_match(domain, "passwd.byname", nam, strlen(nam),
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&val, &vallen);
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switch(reason) {
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case 0:
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break;
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default:
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return (NULL);
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break;
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}
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val[vallen] = '\0';
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strcpy(line, val);
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free(val);
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return(interpret(&pwent, line));
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}
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struct passwd *
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ypgetpwuid(uid)
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uid_t uid;
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{
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static struct passwd pwent;
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static char line[1024];
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char *val;
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int reason, vallen;
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char namebuf[16];
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if (!domain && (reason = yp_get_default_domain(&domain)))
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errx(1, "can't get local YP domain. Reason: %s\n",
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yperr_string(reason));
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sprintf(namebuf, "%d", uid);
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reason = yp_match(domain, "passwd.byuid", namebuf, strlen(namebuf),
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&val, &vallen);
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switch(reason) {
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case 0:
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break;
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default:
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return (NULL);
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break;
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}
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val[vallen] = '\0';
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strcpy(line, val);
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free(val);
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return(interpret(&pwent, line));
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}
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void
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yppw_error(name, err, eval)
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const char *name;
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int err, eval;
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{
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if (err)
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warn(name);
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errx(eval, "YP passwd information unchanged");
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}
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void
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yppw_prompt()
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{
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int c;
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(void)printf("re-edit the password file? [y]: ");
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(void)fflush(stdout);
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c = getchar();
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if (c != EOF && c != '\n')
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while (getchar() != '\n');
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if (c == 'n')
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yppw_error(NULL, 0, 0);
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}
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#endif /* YP */
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