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 *sccsid = "from: @(#)clnt_generic.c 1.4 87/08/11 (C) 1987 SMI";*/ 32 /*static char *sccsid = "from: @(#)clnt_generic.c 2.2 88/08/01 4.0 RPCSRC";*/ 33 static char *rcsid = "$FreeBSD$"; 34 #endif 35 36 /* 37 * Copyright (C) 1987, Sun Microsystems, Inc. 38 */ 39 #include <rpc/rpc.h> 40 #include <sys/socket.h> 41 #include <sys/errno.h> 42 #include <netdb.h> 43 #include <string.h> 44 45 /* 46 * Generic client creation: takes (hostname, program-number, protocol) and 47 * returns client handle. Default options are set, which the user can 48 * change using the rpc equivalent of ioctl()'s. 49 */ 50 CLIENT * 51 clnt_create(hostname, prog, vers, proto) 52 char *hostname; 53 u_long prog; 54 u_long vers; 55 char *proto; 56 { 57 struct hostent *h; 58 struct protoent *p; 59 struct sockaddr_in sin; 60 struct sockaddr_un sun; 61 int sock; 62 static struct timeval tv; 63 CLIENT *client; 64 65 if (!strcmp(proto, "unix")) { 66 bzero((char *)&sun, sizeof(sun)); 67 sun.sun_family = AF_UNIX; 68 strcpy(sun.sun_path, hostname); 69 sun.sun_len = sizeof(sun.sun_len) + sizeof(sun.sun_family) + 70 strlen(sun.sun_path) + 1; 71 sock = RPC_ANYSOCK; 72 client = clntunix_create(&sun, prog, vers, &sock, 0, 0); 73 if (client == NULL) 74 return(NULL); 75 tv.tv_sec = 25; 76 tv.tv_usec = 0; 77 clnt_control(client, CLSET_TIMEOUT, &tv); 78 return(client); 79 } 80 81 h = gethostbyname(hostname); 82 if (h == NULL) { 83 rpc_createerr.cf_stat = RPC_UNKNOWNHOST; 84 return (NULL); 85 } 86 if (h->h_addrtype != AF_INET) { 87 /* 88 * Only support INET for now 89 */ 90 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 91 rpc_createerr.cf_error.re_errno = EAFNOSUPPORT; 92 return (NULL); 93 } 94 memset(&sin, 0, sizeof(sin)); 95 sin.sin_len = sizeof(struct sockaddr_in); 96 sin.sin_family = h->h_addrtype; 97 sin.sin_port = 0; 98 memcpy((char*)&sin.sin_addr, h->h_addr, h->h_length); 99 p = getprotobyname(proto); 100 if (p == NULL) { 101 rpc_createerr.cf_stat = RPC_UNKNOWNPROTO; 102 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 103 return (NULL); 104 } 105 sock = RPC_ANYSOCK; 106 switch (p->p_proto) { 107 case IPPROTO_UDP: 108 tv.tv_sec = 5; 109 tv.tv_usec = 0; 110 client = clntudp_create(&sin, prog, vers, tv, &sock); 111 if (client == NULL) { 112 return (NULL); 113 } 114 #if 0 /* XXX do we need this? */ 115 tv.tv_sec = 25; 116 tv.tv_usec = 0; 117 clnt_control(client, CLSET_TIMEOUT, &tv); 118 #endif 119 break; 120 case IPPROTO_TCP: 121 client = clnttcp_create(&sin, prog, vers, &sock, 0, 0); 122 if (client == NULL) { 123 return (NULL); 124 } 125 #if 0 /* XXX do we need this? */ 126 tv.tv_sec = 25; 127 tv.tv_usec = 0; 128 clnt_control(client, CLSET_TIMEOUT, &tv); 129 #endif 130 break; 131 default: 132 rpc_createerr.cf_stat = RPC_SYSTEMERROR; 133 rpc_createerr.cf_error.re_errno = EPFNOSUPPORT; 134 return (NULL); 135 } 136 return (client); 137 } 138