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 * @(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI 30 * @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC 31 * $FreeBSD: src/lib/libc/rpc/clnt_generic.c,v 1.9.2.1 2001/03/05 10:48:28 obrien Exp $ 32 * $DragonFly: src/lib/libc/rpc/clnt_generic.c,v 1.4 2005/01/31 22:29:38 dillon Exp $ 33 */ 34 35 /* 36 * Copyright (C) 1987, Sun Microsystems, Inc. 37 */ 38 #include <rpc/rpc.h> 39 #include <sys/socket.h> 40 #include <errno.h> 41 #include <netdb.h> 42 #include <string.h> 43 44 /* 45 * Generic client creation: takes (hostname, program-number, protocol) and 46 * returns client handle. Default options are set, which the user can 47 * change using the rpc equivalent of _ioctl()'s. 48 */ 49 CLIENT * 50 clnt_create(const char *hostname, u_long prog, u_long vers, const char *proto) 51 { 52 struct hostent *h; 53 struct protoent *p; 54 struct sockaddr_in sin; 55 struct sockaddr_un sun; 56 int sock; 57 static struct timeval tv; 58 CLIENT *client; 59 60 if (!strcmp(proto, "unix")) { 61 bzero((char *)&sun, sizeof(sun)); 62 sun.sun_family = AF_UNIX; 63 strcpy(sun.sun_path, hostname); 64 sun.sun_len = sizeof(sun.sun_len) + sizeof(sun.sun_family) + 65 strlen(sun.sun_path) + 1; 66 sock = RPC_ANYSOCK; 67 client = clntunix_create(&sun, prog, vers, &sock, 0, 0); 68 if (client == NULL) 69 return(NULL); 70 tv.tv_sec = 25; 71 tv.tv_usec = 0; 72 clnt_control(client, CLSET_TIMEOUT, &tv); 73 return(client); 74 } 75 76 h = gethostbyname(hostname); 77 if (h == NULL) { 78 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 79 return (NULL); 80 } 81 if (h->h_addrtype != AF_INET) { 82 /* 83 * Only support INET for now 84 */ 85 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 86 rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; 87 return (NULL); 88 } 89 memset(&sin, 0, sizeof(sin)); 90 sin.sin_len = sizeof(struct sockaddr_in); 91 sin.sin_family = h->h_addrtype; 92 sin.sin_port = 0; 93 memcpy((char*)&sin.sin_addr, h->h_addr, h->h_length); 94 p = getprotobyname(proto); 95 if (p == NULL) { 96 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 97 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 98 return (NULL); 99 } 100 sock = RPC_ANYSOCK; 101 switch (p->p_proto) { 102 case IPPROTO_UDP: 103 tv.tv_sec = 5; 104 tv.tv_usec = 0; 105 client = clntudp_create(&sin, prog, vers, tv, &sock); 106 if (client == NULL) { 107 return (NULL); 108 } 109 #if 0 /* XXX do we need this? */ 110 tv.tv_sec = 25; 111 tv.tv_usec = 0; 112 clnt_control(client, CLSET_TIMEOUT, &tv); 113 #endif 114 break; 115 case IPPROTO_TCP: 116 client = clnttcp_create(&sin, prog, vers, &sock, 0, 0); 117 if (client == NULL) { 118 return (NULL); 119 } 120 #if 0 /* XXX do we need this? */ 121 tv.tv_sec = 25; 122 tv.tv_usec = 0; 123 clnt_control(client, CLSET_TIMEOUT, &tv); 124 #endif 125 break; 126 default: 127 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 128 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 129 return (NULL); 130 } 131 return (client); 132 } 133