1 /* $OpenBSD: pmap_clnt.c,v 1.16 2010/09/01 14:43:34 millert Exp $ */ 2 3 /* 4 * Copyright (c) 2010, Oracle America, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials 15 * 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 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 27 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * pmap_clnt.c 36 * Client interface to pmap rpc service. 37 */ 38 39 #include <unistd.h> 40 #include <errno.h> 41 #include <rpc/rpc.h> 42 #include <rpc/pmap_prot.h> 43 #include <rpc/pmap_clnt.h> 44 45 static struct timeval timeout = { 5, 0 }; 46 static struct timeval tottimeout = { 60, 0 }; 47 48 /* 49 * Set a mapping between program,version and port. 50 * Calls the pmap service remotely to do the mapping. 51 */ 52 bool_t 53 pmap_set(u_long program, u_long version, u_int protocol, int iport) 54 { 55 struct sockaddr_in myaddress; 56 int sock = -1; 57 CLIENT *client; 58 struct pmap parms; 59 bool_t rslt; 60 u_short port = iport; 61 62 if (get_myaddress(&myaddress) != 0) 63 return (FALSE); 64 myaddress.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 65 client = clntudp_bufcreate(&myaddress, PMAPPROG, PMAPVERS, 66 timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 67 if (client == NULL) 68 return (FALSE); 69 parms.pm_prog = program; 70 parms.pm_vers = version; 71 parms.pm_prot = protocol; 72 parms.pm_port = port; 73 if (CLNT_CALL(client, PMAPPROC_SET, xdr_pmap, &parms, xdr_bool, &rslt, 74 tottimeout) != RPC_SUCCESS) { 75 int save_errno = errno; 76 77 clnt_perror(client, "Cannot register service"); 78 errno = save_errno; 79 return (FALSE); 80 } 81 CLNT_DESTROY(client); 82 if (sock != -1) 83 (void)close(sock); 84 return (rslt); 85 } 86 87 /* 88 * Remove the mapping between program,version and port. 89 * Calls the pmap service remotely to do the un-mapping. 90 */ 91 bool_t 92 pmap_unset(u_long program, u_long version) 93 { 94 struct sockaddr_in myaddress; 95 int sock = -1; 96 CLIENT *client; 97 struct pmap parms; 98 bool_t rslt; 99 100 if (get_myaddress(&myaddress) != 0) 101 return (FALSE); 102 myaddress.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 103 client = clntudp_bufcreate(&myaddress, PMAPPROG, PMAPVERS, 104 timeout, &sock, RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); 105 if (client == NULL) 106 return (FALSE); 107 parms.pm_prog = program; 108 parms.pm_vers = version; 109 parms.pm_port = parms.pm_prot = 0; 110 CLNT_CALL(client, PMAPPROC_UNSET, xdr_pmap, &parms, xdr_bool, &rslt, 111 tottimeout); 112 CLNT_DESTROY(client); 113 if (sock != -1) 114 (void)close(sock); 115 return (rslt); 116 } 117