1 /* $NetBSD: clnt_generic.c,v 1.11 1998/02/13 05:52:15 lukem Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI"; 36 static char *sccsid = "@(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC"; 37 #else 38 __RCSID("$NetBSD: clnt_generic.c,v 1.11 1998/02/13 05:52:15 lukem Exp $"); 39 #endif 40 #endif 41 42 /* 43 * Copyright (C) 1987, Sun Microsystems, Inc. 44 */ 45 #include "namespace.h" 46 47 #include <sys/types.h> 48 #include <sys/socket.h> 49 50 #include <errno.h> 51 #include <netdb.h> 52 #include <string.h> 53 54 #include <rpc/rpc.h> 55 56 #ifdef __weak_alias 57 __weak_alias(clnt_create,_clnt_create); 58 #endif 59 60 /* 61 * Generic client creation: takes (hostname, program-number, protocol) and 62 * returns client handle. Default options are set, which the user can 63 * change using the rpc equivalent of ioctl()'s. 64 */ 65 CLIENT * 66 clnt_create(hostname, prog, vers, proto) 67 char *hostname; 68 u_long prog; 69 u_long vers; 70 char *proto; 71 { 72 struct hostent *h; 73 struct protoent *p; 74 struct sockaddr_in sin; 75 int sock; 76 struct timeval tv; 77 CLIENT *client; 78 79 h = gethostbyname(hostname); 80 if (h == NULL) { 81 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 82 return (NULL); 83 } 84 if (h->h_addrtype != AF_INET) { 85 /* 86 * Only support INET for now 87 */ 88 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 89 rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; 90 return (NULL); 91 } 92 memset(&sin, 0, sizeof(sin)); 93 sin.sin_len = sizeof(struct sockaddr_in); 94 sin.sin_family = h->h_addrtype; 95 sin.sin_port = 0; 96 memmove((char*)&sin.sin_addr, h->h_addr, h->h_length); 97 p = getprotobyname(proto); 98 if (p == NULL) { 99 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 100 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 101 return (NULL); 102 } 103 sock = RPC_ANYSOCK; 104 switch (p->p_proto) { 105 case IPPROTO_UDP: 106 tv.tv_sec = 5; 107 tv.tv_usec = 0; 108 client = clntudp_create(&sin, prog, vers, tv, &sock); 109 if (client == NULL) { 110 return (NULL); 111 } 112 break; 113 case IPPROTO_TCP: 114 client = clnttcp_create(&sin, prog, vers, &sock, 0, 0); 115 if (client == NULL) { 116 return (NULL); 117 } 118 break; 119 default: 120 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 121 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 122 return (NULL); 123 } 124 return (client); 125 } 126