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rpc.yppasswdd.c revision 1.3 
      1 /*	$NetBSD: rpc.yppasswdd.c,v 1.3 1999/06/06 02:44:52 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Mats O Jansson <moj (at) stacken.kth.se>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by Mats O Jansson
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/types.h>
     35 #include <sys/wait.h>
     36 #include <err.h>
     37 #include <limits.h>
     38 #include <stdio.h>
     39 #include <stdlib.h>
     40 #include <string.h>
     41 #include <signal.h>
     42 #include <unistd.h>
     43 #include <util.h>
     44 
     45 #include <rpc/rpc.h>
     46 #include <rpc/pmap_clnt.h>
     47 #include <rpcsvc/yppasswd.h>
     48 
     49 extern	char *__progname;		/* from crt0.s */
     50 
     51 int	noshell, nogecos, nopw, domake;
     52 char	make_arg[_POSIX2_LINE_MAX] = "make";
     53 
     54 extern	void make_passwd __P((yppasswd *, struct svc_req *, SVCXPRT *));
     55 
     56 int	main __P((int, char *[]));
     57 void	yppasswddprog_1 __P((struct svc_req *, SVCXPRT *));
     58 void	usage __P((void));
     59 
     60 int
     61 main(argc, argv)
     62 	int     argc;
     63 	char   *argv[];
     64 {
     65 	SVCXPRT *transp;
     66 	int i;
     67 
     68 	for (i = 1; i < argc; i++) {
     69 		if (argv[i][0] == '-') {
     70 			if (strcmp("-noshell", argv[i]) == 0)
     71 				noshell = 1;
     72 			else if (strcmp("-nogecos", argv[i]) == 0)
     73 				nogecos = 1;
     74 			else if (strcmp("-nopw", argv[i]) == 0)
     75 				nopw = 1;
     76 			else if (strcmp("-m", argv[i]) == 0) {
     77 				domake = 1;
     78 				for (; i < argc; i++) {
     79 					strcat(make_arg, " ");
     80 					strcat(make_arg, argv[i]);
     81 				}
     82 			} else
     83 				usage();
     84 		} else
     85 			usage();
     86 	}
     87 
     88 	if (daemon(0, 0))
     89 		err(1, "can't detach");
     90 	pidfile(NULL);
     91 
     92 	(void) pmap_unset(YPPASSWDPROG, YPPASSWDVERS);
     93 
     94 	transp = svcudp_create(RPC_ANYSOCK);
     95 	if (transp == NULL)
     96 		errx(1, "cannot create UDP service");
     97 
     98 	if (!svc_register(transp, YPPASSWDPROG, YPPASSWDVERS, yppasswddprog_1,
     99 	    IPPROTO_UDP))
    100 		errx(1, "unable to register YPPASSWDPROG/YPPASSWDVERS/UDP");
    101 
    102 	transp = svctcp_create(RPC_ANYSOCK, 0, 0);
    103 	if (transp == NULL)
    104 		errx(1, "cannot create TCP service");
    105 
    106 	if (!svc_register(transp, YPPASSWDPROG, YPPASSWDVERS, yppasswddprog_1,
    107 	    IPPROTO_TCP))
    108 		errx(1, "unable to register YPPASSWDPROG/YPPASSWDVERS/TCP");
    109 
    110 	svc_run();
    111 	errx(1, "svc_run returned");
    112 }
    113 
    114 void
    115 yppasswddprog_1(rqstp, transp)
    116 	struct svc_req *rqstp;
    117 	SVCXPRT *transp;
    118 {
    119 	union {
    120 		yppasswd yppasswdproc_update_1_arg;
    121 	} argument;
    122 
    123 	switch (rqstp->rq_proc) {
    124 	case NULLPROC:
    125 		(void) svc_sendreply(transp, xdr_void, (char *) NULL);
    126 		return;
    127 
    128 	case YPPASSWDPROC_UPDATE:
    129 		/*
    130 		 * We'd like this to look like a regular RPC
    131 		 * stub, but we have to send the reply in the
    132 		 * handler in order to avoid both signal race
    133 		 * conditions locally and timeouts on the
    134 		 * client.
    135 		 */
    136 		(void) memset(&argument, 0, sizeof(argument));
    137 		if (!svc_getargs(transp, xdr_yppasswd, (caddr_t) & argument)) {
    138 			svcerr_decode(transp);
    139 			return;
    140 		}
    141 		make_passwd((yppasswd *)&argument, rqstp, transp);
    142 		if (!svc_freeargs(transp, xdr_yppasswd, (caddr_t) &argument))
    143 			errx(1, "unable to free arguments");
    144 		return;
    145 	}
    146 
    147 	svcerr_noproc(transp);
    148 }
    149 
    150 void
    151 usage()
    152 {
    153 
    154 	fprintf(stderr, "usage: %s [-noshell] [-nogecos] [-nopw] "
    155 	    "[-m arg1 arg2 ...]\n", __progname);
    156 	exit(1);
    157 }
    158