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_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";*/ 32 /*static char *sccsid = "from: @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC";*/ 33 static char *rcsid = "$FreeBSD: src/lib/libc/rpc/clnt_simple.c,v 1.12 2000/01/27 23:06:35 jasone Exp $"; 34 #endif 35 36 /* 37 * clnt_simple.c 38 * Simplified front end to rpc. 39 * 40 * Copyright (C) 1984, Sun Microsystems, Inc. 41 */ 42 43 #include <sys/param.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 #include <string.h> 48 #include <rpc/rpc.h> 49 #include <sys/socket.h> 50 #include <netdb.h> 51 52 static struct callrpc_private { 53 CLIENT *client; 54 int socket; 55 int oldprognum, oldversnum, valid; 56 char *oldhost; 57 } *callrpc_private; 58 59 int 60 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 61 char *host; 62 int prognum, versnum, procnum; 63 xdrproc_t inproc, outproc; 64 char *in, *out; 65 { 66 register struct callrpc_private *crp = callrpc_private; 67 struct sockaddr_in server_addr; 68 enum clnt_stat clnt_stat; 69 struct hostent *hp; 70 struct timeval timeout, tottimeout; 71 72 if (crp == 0) { 73 crp = (struct callrpc_private *)calloc(1, sizeof (*crp)); 74 if (crp == 0) 75 return (0); 76 callrpc_private = crp; 77 } 78 if (crp->oldhost == NULL) { 79 crp->oldhost = malloc(MAXHOSTNAMELEN); 80 crp->oldhost[0] = 0; 81 crp->socket = RPC_ANYSOCK; 82 } 83 if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum 84 && strcmp(crp->oldhost, host) == 0) { 85 /* reuse old client */ 86 } else { 87 crp->valid = 0; 88 if (crp->socket != -1) 89 (void)_close(crp->socket); 90 crp->socket = RPC_ANYSOCK; 91 if (crp->client) { 92 clnt_destroy(crp->client); 93 crp->client = NULL; 94 } 95 if ((hp = gethostbyname(host)) == NULL) 96 return ((int) RPC_UNKNOWNHOST); 97 timeout.tv_usec = 0; 98 timeout.tv_sec = 5; 99 memset(&server_addr, 0, sizeof(server_addr)); 100 memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length); 101 server_addr.sin_len = sizeof(struct sockaddr_in); 102 server_addr.sin_family = AF_INET; 103 server_addr.sin_port = 0; 104 if ((crp->client = clntudp_create(&server_addr, (u_long)prognum, 105 (u_long)versnum, timeout, &crp->socket)) == NULL) 106 return ((int) rpc_createerr.cf_stat); 107 crp->valid = 1; 108 crp->oldprognum = prognum; 109 crp->oldversnum = versnum; 110 (void) strcpy(crp->oldhost, host); 111 } 112 tottimeout.tv_sec = 25; 113 tottimeout.tv_usec = 0; 114 clnt_stat = clnt_call(crp->client, procnum, inproc, in, 115 outproc, out, tottimeout); 116 /* 117 * if call failed, empty cache 118 */ 119 if (clnt_stat != RPC_SUCCESS) 120 crp->valid = 0; 121 return ((int) clnt_stat); 122 } 123