1 /* $NetBSD: rpc.yppasswdd.c,v 1.10 2002/01/25 20:30:41 wennmach Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Mats O Jansson <moj@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/cdefs.h> 35 #ifndef lint 36 __RCSID("$NetBSD: rpc.yppasswdd.c,v 1.10 2002/01/25 20:30:41 wennmach Exp $"); 37 #endif /* not lint */ 38 39 #include <sys/types.h> 40 #include <sys/wait.h> 41 42 #include <err.h> 43 #include <errno.h> 44 #include <limits.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <signal.h> 49 #include <unistd.h> 50 #include <util.h> 51 52 #include <rpc/rpc.h> 53 #include <rpc/pmap_clnt.h> 54 #include <rpcsvc/yppasswd.h> 55 56 #include "extern.h" 57 58 int noshell, nogecos, nopw; 59 char make_arg[_POSIX2_LINE_MAX] = "make"; 60 61 int main(int, char *[]); 62 void yppasswddprog_1(struct svc_req *, SVCXPRT *); 63 void usage(void); 64 65 int 66 main(int argc, char *argv[]) 67 { 68 SVCXPRT *transp; 69 int i; 70 char *arg; 71 72 for (i = 1; i < argc; i++) { 73 arg = argv[i]; 74 if (*arg++ != '-') 75 usage(); 76 if (strcmp("d", arg) == 0) 77 if (++i == argc) 78 usage(); 79 else { 80 if (pw_setprefix(argv[i]) < 0) 81 err(EXIT_FAILURE,NULL); 82 } 83 else if (strcmp("noshell", arg) == 0) 84 noshell = 1; 85 else if (strcmp("nogecos", arg) == 0) 86 nogecos = 1; 87 else if (strcmp("nopw", arg) == 0) 88 nopw = 1; 89 else if (strcmp("m", arg) == 0) { 90 int len; 91 92 len = strlen(make_arg); 93 if (++i == argc) 94 usage(); 95 for (; i < argc; i++) { 96 int arglen; 97 98 arglen = strlen(argv[i]); 99 if ((len + arglen) > (sizeof(make_arg) - 2)) 100 errx(EXIT_FAILURE, strerror(E2BIG)); 101 make_arg[len++] = ' '; 102 (void)strcpy(&make_arg[len], argv[i]); 103 len += arglen; 104 } 105 } else 106 usage(); 107 } 108 109 if (daemon(0, 0)) 110 err(EXIT_FAILURE, "can't detach"); 111 pidfile(NULL); 112 113 (void)pmap_unset(YPPASSWDPROG, YPPASSWDVERS); 114 115 transp = svcudp_create(RPC_ANYSOCK); 116 if (transp == NULL) 117 errx(EXIT_FAILURE, "cannot create UDP service"); 118 119 if (!svc_register(transp, YPPASSWDPROG, YPPASSWDVERS, yppasswddprog_1, 120 IPPROTO_UDP)) 121 errx(EXIT_FAILURE, 122 "unable to register YPPASSWDPROG/YPPASSWDVERS/UDP"); 123 124 transp = svctcp_create(RPC_ANYSOCK, 0, 0); 125 if (transp == NULL) 126 errx(EXIT_FAILURE, "cannot create TCP service"); 127 128 if (!svc_register(transp, YPPASSWDPROG, YPPASSWDVERS, yppasswddprog_1, 129 IPPROTO_TCP)) 130 errx(EXIT_FAILURE, 131 "unable to register YPPASSWDPROG/YPPASSWDVERS/TCP"); 132 133 svc_run(); 134 errx(EXIT_FAILURE, "svc_run returned"); 135 /* NOTREACHED */ 136 } 137 138 void 139 yppasswddprog_1(struct svc_req *rqstp, SVCXPRT *transp) 140 { 141 union { 142 yppasswd yppasswdproc_update_1_arg; 143 } argument; 144 145 switch (rqstp->rq_proc) { 146 case NULLPROC: 147 (void)svc_sendreply(transp, xdr_void, (char *) NULL); 148 return; 149 150 case YPPASSWDPROC_UPDATE: 151 /* 152 * We'd like this to look like a regular RPC 153 * stub, but we have to send the reply in the 154 * handler in order to avoid both signal race 155 * conditions locally and timeouts on the 156 * client. 157 */ 158 (void)memset(&argument, 0, sizeof(argument)); 159 if (!svc_getargs(transp, xdr_yppasswd, (caddr_t) & argument)) { 160 svcerr_decode(transp); 161 return; 162 } 163 make_passwd((yppasswd *)&argument, rqstp, transp); 164 if (!svc_freeargs(transp, xdr_yppasswd, (caddr_t) &argument)) 165 errx(EXIT_FAILURE, "unable to free arguments"); 166 return; 167 } 168 169 svcerr_noproc(transp); 170 } 171 172 void 173 usage(void) 174 { 175 176 fprintf(stderr, "usage: %s [-d directory] [-noshell] [-nogecos] " 177 "[-nopw] [-m arg1 [arg2 ...]]\n", getprogname()); 178 exit(EXIT_FAILURE); 179 } 180