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_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro 30 * @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC 31 * $FreeBSD: src/lib/libc/rpc/clnt_simple.c,v 1.12 2000/01/27 23:06:35 jasone Exp $ 32 * $DragonFly: src/lib/libc/rpc/clnt_simple.c,v 1.3 2004/10/25 19:38:01 drhodus Exp $ 33 */ 34 35 /* 36 * clnt_simple.c 37 * Simplified front end to rpc. 38 * 39 * Copyright (C) 1984, Sun Microsystems, Inc. 40 */ 41 42 #include <sys/param.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <unistd.h> 46 #include <string.h> 47 #include <rpc/rpc.h> 48 #include <sys/socket.h> 49 #include <netdb.h> 50 51 static struct callrpc_private { 52 CLIENT *client; 53 int socket; 54 int oldprognum, oldversnum, valid; 55 char *oldhost; 56 } *callrpc_private; 57 58 int 59 callrpc(host, prognum, versnum, procnum, inproc, in, outproc, out) 60 char *host; 61 int prognum, versnum, procnum; 62 xdrproc_t inproc, outproc; 63 char *in, *out; 64 { 65 struct callrpc_private *crp = callrpc_private; 66 struct sockaddr_in server_addr; 67 enum clnt_stat clnt_stat; 68 struct hostent *hp; 69 struct timeval timeout, tottimeout; 70 71 if (crp == 0) { 72 crp = (struct callrpc_private *)calloc(1, sizeof (*crp)); 73 if (crp == 0) 74 return (0); 75 callrpc_private = crp; 76 } 77 if (crp->oldhost == NULL) { 78 crp->oldhost = malloc(MAXHOSTNAMELEN); 79 crp->oldhost[0] = 0; 80 crp->socket = RPC_ANYSOCK; 81 } 82 if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum 83 && strcmp(crp->oldhost, host) == 0) { 84 /* reuse old client */ 85 } else { 86 crp->valid = 0; 87 if (crp->socket != -1) 88 (void)_close(crp->socket); 89 crp->socket = RPC_ANYSOCK; 90 if (crp->client) { 91 clnt_destroy(crp->client); 92 crp->client = NULL; 93 } 94 if ((hp = gethostbyname(host)) == NULL) 95 return ((int) RPC_UNKNOWNHOST); 96 timeout.tv_usec = 0; 97 timeout.tv_sec = 5; 98 memset(&server_addr, 0, sizeof(server_addr)); 99 memcpy((char *)&server_addr.sin_addr, hp->h_addr, hp->h_length); 100 server_addr.sin_len = sizeof(struct sockaddr_in); 101 server_addr.sin_family = AF_INET; 102 server_addr.sin_port = 0; 103 if ((crp->client = clntudp_create(&server_addr, (u_long)prognum, 104 (u_long)versnum, timeout, &crp->socket)) == NULL) 105 return ((int) rpc_createerr.cf_stat); 106 crp->valid = 1; 107 crp->oldprognum = prognum; 108 crp->oldversnum = versnum; 109 (void) strcpy(crp->oldhost, host); 110 } 111 tottimeout.tv_sec = 25; 112 tottimeout.tv_usec = 0; 113 clnt_stat = clnt_call(crp->client, procnum, inproc, in, 114 outproc, out, tottimeout); 115 /* 116 * if call failed, empty cache 117 */ 118 if (clnt_stat != RPC_SUCCESS) 119 crp->valid = 0; 120 return ((int) clnt_stat); 121 } 122