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_simple.c,v 1.6 1996/12/10 07:46:33 deraadt Exp $"; 32 #endif /* LIBC_SCCS and not lint */ 33 34 /* 35 * clnt_simple.c 36 * Simplified front end to rpc. 37 * 38 * Copyright (C) 1984, Sun Microsystems, Inc. 39 */ 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <rpc/rpc.h> 45 #include <sys/socket.h> 46 #include <netdb.h> 47 48 static struct callrpc_private { 49 CLIENT *client; 50 int socket; 51 int oldprognum, oldversnum, valid; 52 char *oldhost; 53 } *callrpc_private; 54 55 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 56 char *host; 57 int prognum, versnum, procnum; 58 xdrproc_t inproc, outproc; 59 char *in, *out; 60 { 61 register struct callrpc_private *crp = callrpc_private; 62 struct sockaddr_in server_addr; 63 enum clnt_stat clnt_stat; 64 struct hostent *hp; 65 struct timeval timeout, tottimeout; 66 67 if (crp == 0) { 68 crp = (struct callrpc_private *)calloc(1, sizeof (*crp)); 69 if (crp == 0) 70 return (0); 71 callrpc_private = crp; 72 } 73 if (crp->oldhost == NULL) { 74 crp->oldhost = malloc(MAXHOSTNAMELEN); 75 crp->oldhost[0] = 0; 76 crp->socket = RPC_ANYSOCK; 77 } 78 if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum 79 && strcmp(crp->oldhost, host) == 0) { 80 /* reuse old client */ 81 } else { 82 crp->valid = 0; 83 if (crp->socket != -1) 84 (void)close(crp->socket); 85 crp->socket = RPC_ANYSOCK; 86 if (crp->client) { 87 clnt_destroy(crp->client); 88 crp->client = NULL; 89 } 90 if ((hp = gethostbyname(host)) == NULL) 91 return ((int) RPC_UNKNOWNHOST); 92 timeout.tv_usec = 0; 93 timeout.tv_sec = 5; 94 memset(&server_addr, 0, sizeof(server_addr)); 95 memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length); 96 server_addr.sin_len = sizeof(struct sockaddr_in); 97 server_addr.sin_family = AF_INET; 98 server_addr.sin_port = 0; 99 if ((crp->client = clntudp_create(&server_addr, (u_long)prognum, 100 (u_long)versnum, timeout, &crp->socket)) == NULL) 101 return ((int) rpc_createerr.cf_stat); 102 crp->valid = 1; 103 crp->oldprognum = prognum; 104 crp->oldversnum = versnum; 105 (void) strcpy(crp->oldhost, host); 106 } 107 tottimeout.tv_sec = 25; 108 tottimeout.tv_usec = 0; 109 clnt_stat = clnt_call(crp->client, procnum, inproc, in, 110 outproc, out, tottimeout); 111 /* 112 * if call failed, empty cache 113 */ 114 if (clnt_stat != RPC_SUCCESS) 115 crp->valid = 0; 116 return ((int) clnt_stat); 117 } 118