1 /* $NetBSD: rpcb_clnt.c,v 1.6 2000/07/16 06:41:43 itojun Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2010, Oracle America, Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions are met: 11 * - Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * - Neither the name of the "Oracle America, Inc." nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 /* 33 * Copyright (c) 1986-1991 by Sun Microsystems Inc. 34 */ 35 36 #include <sys/cdefs.h> 37 /* 38 * rpcb_clnt.c 39 * interface to rpcbind rpc service. 40 * 41 * Copyright (C) 1988, Sun Microsystems, Inc. 42 */ 43 44 #include "opt_inet6.h" 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/malloc.h> 50 #include <sys/proc.h> 51 #include <sys/socket.h> 52 #include <sys/socketvar.h> 53 54 #include <rpc/rpc.h> 55 #include <rpc/rpcb_clnt.h> 56 #include <rpc/rpcb_prot.h> 57 58 #include <rpc/rpc_com.h> 59 60 static struct timeval tottimeout = { 60, 0 }; 61 static const char nullstring[] = "\000"; 62 static CLIENT *rpcb_clnt; 63 64 static void 65 local_rpcb(void *v __unused) 66 { 67 rpcb_clnt = client_nl_create("rpcbind", RPCBPROG, RPCBVERS); 68 KASSERT(rpcb_clnt, ("%s: netlink client already exist", __func__)); 69 clnt_control(rpcb_clnt, CLSET_RETRIES, &(int){6}); 70 clnt_control(rpcb_clnt, CLSET_WAITCHAN, "rpcb"); 71 } 72 SYSINIT(rpcb_clnt, SI_SUB_VFS, SI_ORDER_SECOND, local_rpcb, NULL); 73 74 /* 75 * Set a mapping between program, version and address. 76 * Calls the rpcbind service to do the mapping. 77 */ 78 bool_t 79 rpcb_set(rpcprog_t program, rpcvers_t version, 80 const struct netconfig *nconf, /* Network structure of transport */ 81 const struct netbuf *address) /* Services netconfig address */ 82 { 83 bool_t rslt = FALSE; 84 RPCB parms; 85 #if 0 86 char uidbuf[32]; 87 #endif 88 struct netconfig nconfcopy; 89 struct netbuf addresscopy; 90 91 /* parameter checking */ 92 if (nconf == NULL) { 93 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 94 return (FALSE); 95 } 96 if (address == NULL) { 97 rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 98 return (FALSE); 99 } 100 101 /* convert to universal */ 102 /*LINTED const castaway*/ 103 nconfcopy = *nconf; 104 addresscopy = *address; 105 parms.r_addr = taddr2uaddr(&nconfcopy, &addresscopy); 106 if (!parms.r_addr) { 107 rpc_createerr.cf_stat = RPC_N2AXLATEFAILURE; 108 return (FALSE); /* no universal address */ 109 } 110 parms.r_prog = program; 111 parms.r_vers = version; 112 parms.r_netid = nconf->nc_netid; 113 #if 0 114 /* 115 * Though uid is not being used directly, we still send it for 116 * completeness. For non-unix platforms, perhaps some other 117 * string or an empty string can be sent. 118 */ 119 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 120 parms.r_owner = uidbuf; 121 #else 122 parms.r_owner = ""; 123 #endif 124 125 CLNT_CALL(rpcb_clnt, (rpcproc_t)RPCBPROC_SET, (xdrproc_t) xdr_rpcb, 126 (char *)(void *)&parms, (xdrproc_t) xdr_bool, 127 (char *)(void *)&rslt, tottimeout); 128 129 free(parms.r_addr, M_RPC); 130 return (rslt); 131 } 132 133 /* 134 * Remove the mapping between program, version and netbuf address. 135 * Calls the rpcbind service to do the un-mapping. 136 * If netbuf is NULL, unset for all the transports, otherwise unset 137 * only for the given transport. 138 */ 139 bool_t 140 rpcb_unset(rpcprog_t program, rpcvers_t version, const struct netconfig *nconf) 141 { 142 bool_t rslt = FALSE; 143 RPCB parms; 144 #if 0 145 char uidbuf[32]; 146 #endif 147 148 parms.r_prog = program; 149 parms.r_vers = version; 150 if (nconf) 151 parms.r_netid = nconf->nc_netid; 152 else { 153 /*LINTED const castaway*/ 154 parms.r_netid = (char *)(uintptr_t) &nullstring[0]; /* unsets all */ 155 } 156 /*LINTED const castaway*/ 157 parms.r_addr = (char *)(uintptr_t) &nullstring[0]; 158 #if 0 159 (void) snprintf(uidbuf, sizeof uidbuf, "%d", geteuid()); 160 parms.r_owner = uidbuf; 161 #else 162 parms.r_owner = ""; 163 #endif 164 165 CLNT_CALL(rpcb_clnt, (rpcproc_t)RPCBPROC_UNSET, (xdrproc_t) xdr_rpcb, 166 (char *)(void *)&parms, (xdrproc_t) xdr_bool, 167 (char *)(void *)&rslt, tottimeout); 168 169 return (rslt); 170 } 171