NetBSD/usr.sbin/rpc.yppasswdd/rpc.yppasswdd.c

177 lines
4.7 KiB
C

/* $NetBSD: rpc.yppasswdd.c,v 1.18 2017/05/04 16:26:09 sevan Exp $ */
/*
* Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: rpc.yppasswdd.c,v 1.18 2017/05/04 16:26:09 sevan Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <util.h>
#include <rpc/rpc.h>
#include <rpc/pmap_clnt.h>
#include <rpcsvc/yppasswd.h>
#include "extern.h"
int noshell, nogecos, nopw;
char make_arg[_POSIX2_LINE_MAX] = "make";
void yppasswddprog_1(struct svc_req *, SVCXPRT *);
__dead static void usage(void);
int
main(int argc, char *argv[])
{
SVCXPRT *transp;
int i;
char *arg;
int maxrec = RPC_MAXDATASIZE;
for (i = 1; i < argc; i++) {
arg = argv[i];
if (*arg++ != '-')
usage();
if (strcmp("d", arg) == 0)
if (++i == argc)
usage();
else {
if (pw_setprefix(argv[i]) < 0)
err(EXIT_FAILURE,NULL);
}
else if (strcmp("noshell", arg) == 0)
noshell = 1;
else if (strcmp("nogecos", arg) == 0)
nogecos = 1;
else if (strcmp("nopw", arg) == 0)
nopw = 1;
else if (strcmp("m", arg) == 0) {
int len;
len = strlen(make_arg);
if (++i == argc)
usage();
for (; i < argc; i++) {
int arglen;
arglen = strlen(argv[i]);
if ((len + arglen) > (int)(sizeof(make_arg) - 2))
errx(EXIT_FAILURE, "%s", strerror(E2BIG));
make_arg[len++] = ' ';
(void)strcpy(&make_arg[len], argv[i]);
len += arglen;
}
} else
usage();
}
if (daemon(0, 0))
err(EXIT_FAILURE, "can't detach");
pidfile(NULL);
rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
(void)pmap_unset(YPPASSWDPROG, YPPASSWDVERS);
transp = svcudp_create(RPC_ANYSOCK);
if (transp == NULL)
errx(EXIT_FAILURE, "cannot create UDP service");
if (!svc_register(transp, YPPASSWDPROG, YPPASSWDVERS, yppasswddprog_1,
IPPROTO_UDP))
errx(EXIT_FAILURE,
"unable to register YPPASSWDPROG/YPPASSWDVERS/UDP");
transp = svctcp_create(RPC_ANYSOCK, RPC_MAXDATASIZE, RPC_MAXDATASIZE);
if (transp == NULL)
errx(EXIT_FAILURE, "cannot create TCP service");
if (!svc_register(transp, YPPASSWDPROG, YPPASSWDVERS, yppasswddprog_1,
IPPROTO_TCP))
errx(EXIT_FAILURE,
"unable to register YPPASSWDPROG/YPPASSWDVERS/TCP");
svc_run();
errx(EXIT_FAILURE, "svc_run returned");
/* NOTREACHED */
}
void
yppasswddprog_1(struct svc_req *rqstp, SVCXPRT *transp)
{
union {
yppasswd yppasswdproc_update_1_arg;
} argument;
switch (rqstp->rq_proc) {
case NULLPROC:
(void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
return;
case YPPASSWDPROC_UPDATE:
/*
* We'd like this to look like a regular RPC
* stub, but we have to send the reply in the
* handler in order to avoid both signal race
* conditions locally and timeouts on the
* client.
*/
(void)memset(&argument, 0, sizeof(argument));
if (!svc_getargs(transp, xdr_yppasswd, (caddr_t) & argument)) {
svcerr_decode(transp);
return;
}
make_passwd((yppasswd *)&argument, rqstp, transp);
if (!svc_freeargs(transp, xdr_yppasswd, (caddr_t) &argument))
errx(EXIT_FAILURE, "unable to free arguments");
return;
}
svcerr_noproc(transp);
}
void
usage(void)
{
fprintf(stderr, "usage: %s [-d directory] [-noshell] [-nogecos] "
"[-nopw] [-m arg1 [arg2 ...]]\n", getprogname());
exit(EXIT_FAILURE);
}