1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 */ 29 30 #if defined(LIBC_SCCS) && !defined(lint) 31 static char *rcsid = "$OpenBSD: clnt_generic.c,v 1.3 1996/08/19 08:31:25 tholo Exp $"; 32 #endif /* LIBC_SCCS and not lint */ 33 34 /* 35 * Copyright (C) 1987, Sun Microsystems, Inc. 36 */ 37 #include <string.h> 38 #include <rpc/rpc.h> 39 #include <sys/socket.h> 40 #include <sys/errno.h> 41 #include <netdb.h> 42 43 /* 44 * Generic client creation: takes (hostname, program-number, protocol) and 45 * returns client handle. Default options are set, which the user can 46 * change using the rpc equivalent of ioctl()'s. 47 */ 48 CLIENT * 49 clnt_create(hostname, prog, vers, proto) 50 char *hostname; 51 u_long prog; 52 u_long vers; 53 char *proto; 54 { 55 struct hostent *h; 56 struct protoent *p; 57 struct sockaddr_in sin; 58 int sock; 59 struct timeval tv; 60 CLIENT *client; 61 62 h = gethostbyname(hostname); 63 if (h == NULL) { 64 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 65 return (NULL); 66 } 67 if (h->h_addrtype != AF_INET) { 68 /* 69 * Only support INET for now 70 */ 71 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 72 rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; 73 return (NULL); 74 } 75 memset(&sin, 0, sizeof(sin)); 76 sin.sin_len = sizeof(struct sockaddr_in); 77 sin.sin_family = h->h_addrtype; 78 sin.sin_port = 0; 79 memcpy((char*)&sin.sin_addr, h->h_addr, h->h_length); 80 p = getprotobyname(proto); 81 if (p == NULL) { 82 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 83 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 84 return (NULL); 85 } 86 sock = RPC_ANYSOCK; 87 switch (p->p_proto) { 88 case IPPROTO_UDP: 89 tv.tv_sec = 5; 90 tv.tv_usec = 0; 91 client = clntudp_create(&sin, prog, vers, tv, &sock); 92 if (client == NULL) { 93 return (NULL); 94 } 95 break; 96 case IPPROTO_TCP: 97 client = clnttcp_create(&sin, prog, vers, &sock, 0, 0); 98 if (client == NULL) { 99 return (NULL); 100 } 101 break; 102 default: 103 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 104 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 105 return (NULL); 106 } 107 return (client); 108 } 109