1 /* $NetBSD: clnt_generic.c,v 1.6 1995/06/03 22:37:21 mycroft 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 #if defined(LIBC_SCCS) && !defined(lint) 33 /*static char *sccsid = "from: @(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";*/ 34 /*static char *sccsid = "from: @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC";*/ 35 static char *rcsid = "$NetBSD: clnt_generic.c,v 1.6 1995/06/03 22:37:21 mycroft Exp $"; 36 #endif 37 38 /* 39 * Copyright (C) 1987, Sun Microsystems, Inc. 40 */ 41 #include <string.h> 42 #include <rpc/rpc.h> 43 #include <sys/socket.h> 44 #include <sys/errno.h> 45 #include <netdb.h> 46 47 /* 48 * Generic client creation: takes (hostname, program-number, protocol) and 49 * returns client handle. Default options are set, which the user can 50 * change using the rpc equivalent of ioctl()'s. 51 */ 52 CLIENT * 53 clnt_create(hostname, prog, vers, proto) 54 char *hostname; 55 u_long prog; 56 u_long vers; 57 char *proto; 58 { 59 struct hostent *h; 60 struct protoent *p; 61 struct sockaddr_in sin; 62 int sock; 63 struct timeval tv; 64 CLIENT *client; 65 66 h = gethostbyname(hostname); 67 if (h == NULL) { 68 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 69 return (NULL); 70 } 71 if (h->h_addrtype != AF_INET) { 72 /* 73 * Only support INET for now 74 */ 75 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 76 rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; 77 return (NULL); 78 } 79 memset(&sin, 0, sizeof(sin)); 80 sin.sin_len = sizeof(struct sockaddr_in); 81 sin.sin_family = h->h_addrtype; 82 sin.sin_port = 0; 83 bcopy(h->h_addr, (char*)&sin.sin_addr, h->h_length); 84 p = getprotobyname(proto); 85 if (p == NULL) { 86 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 87 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 88 return (NULL); 89 } 90 sock = RPC_ANYSOCK; 91 switch (p->p_proto) { 92 case IPPROTO_UDP: 93 tv.tv_sec = 5; 94 tv.tv_usec = 0; 95 client = clntudp_create(&sin, prog, vers, tv, &sock); 96 if (client == NULL) { 97 return (NULL); 98 } 99 break; 100 case IPPROTO_TCP: 101 client = clnttcp_create(&sin, prog, vers, &sock, 0, 0); 102 if (client == NULL) { 103 return (NULL); 104 } 105 break; 106 default: 107 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 108 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 109 return (NULL); 110 } 111 return (client); 112 } 113