1 /* @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC */ 2 /* 3 * Copyright (c) 2010, Oracle America, Inc. 4 * 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 are met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * * Neither the name of the "Oracle America, Inc." nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 28 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 */ 35 #if !defined(lint) && defined(SCCSIDS) 36 static char sccsid[] = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI"; 37 #endif 38 39 #include "autoconf.h" 40 #include <string.h> 41 #include <gssrpc/rpc.h> 42 #include <sys/socket.h> 43 #include <sys/errno.h> 44 #include <netdb.h> 45 46 /* 47 * Generic client creation: takes (hostname, program-number, protocol) and 48 * returns client handle. Default options are set, which the user can 49 * change using the rpc equivalent of ioctl()'s. 50 */ 51 CLIENT * 52 clnt_create( 53 char *hostname, 54 rpcprog_t prog, 55 rpcvers_t vers, 56 char *proto) 57 { 58 struct hostent *h; 59 struct protoent *p; 60 struct sockaddr_in sockin; 61 int sock; 62 struct timeval tv; 63 CLIENT *client; 64 65 h = gethostbyname(hostname); 66 if (h == NULL) { 67 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 68 return (NULL); 69 } 70 if (h->h_addrtype != AF_INET) { 71 /* 72 * Only support INET for now 73 */ 74 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 75 rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; 76 return (NULL); 77 } 78 memset(&sockin, 0, sizeof(sockin)); 79 sockin.sin_family = h->h_addrtype; 80 sockin.sin_port = 0; 81 memmove((char*)&sockin.sin_addr, h->h_addr, sizeof(sockin.sin_addr)); 82 p = getprotobyname(proto); 83 if (p == NULL) { 84 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 85 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 86 return (NULL); 87 } 88 sock = RPC_ANYSOCK; 89 switch (p->p_proto) { 90 case IPPROTO_UDP: 91 tv.tv_sec = 5; 92 tv.tv_usec = 0; 93 client = clntudp_create(&sockin, prog, vers, tv, &sock); 94 if (client == NULL) { 95 return (NULL); 96 } 97 break; 98 case IPPROTO_TCP: 99 client = clnttcp_create(&sockin, prog, vers, &sock, 0, 0); 100 if (client == NULL) { 101 return (NULL); 102 } 103 break; 104 default: 105 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 106 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 107 return (NULL); 108 } 109 return (client); 110 } 111