yp_update.c revision 84220
1/* 2 * Copyright (c) 1995, 1996 3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * ypupdate client-side library function. 33 * 34 * Written by Bill Paul <wpaul@ctr.columbia.edu> 35 * Center for Telecommunications Research 36 * Columbia University, New York City 37 */ 38 39#include <sys/cdefs.h> 40__FBSDID("$FreeBSD: head/lib/librpcsvc/yp_update.c 84220 2001-09-30 22:15:15Z dillon $"); 41 42#include <stdlib.h> 43#include <rpc/rpc.h> 44#include <rpcsvc/yp_prot.h> 45#include <rpcsvc/ypclnt.h> 46#include <rpcsvc/ypupdate_prot.h> 47#include <rpc/key_prot.h> 48 49#ifndef WINDOW 50#define WINDOW (60*60) 51#endif 52 53#ifndef TIMEOUT 54#define TIMEOUT 300 55#endif 56 57int 58yp_update(domain, map, ypop, key, keylen, data, datalen) 59 char *domain; 60 char *map; 61 unsigned int ypop; 62 char *key; 63 int keylen; 64 char *data; 65 int datalen; 66{ 67 char *master; 68 int rval; 69 unsigned int res; 70 struct ypupdate_args upargs; 71 struct ypdelete_args delargs; 72 CLIENT *clnt; 73 char netname[MAXNETNAMELEN+1]; 74 des_block des_key; 75 struct timeval timeout; 76 77 /* Get the master server name for 'domain.' */ 78 if ((rval = yp_master(domain, map, &master))) 79 return(rval); 80 81 /* Check that ypupdated is running there. */ 82 if (getrpcport(master, YPU_PROG, YPU_VERS, ypop)) 83 return(YPERR_DOMAIN); 84 85 /* Get a handle. */ 86 if ((clnt = clnt_create(master, YPU_PROG, YPU_VERS, "tcp")) == NULL) 87 return(YPERR_RPC); 88 89 /* 90 * Assemble netname of server. 91 * NOTE: It's difficult to discern from the documentation, but 92 * when you make a Secure RPC call, the netname you pass should 93 * be the netname of the guy on the other side, not your own 94 * netname. This is how the client side knows what public key 95 * to use for the initial exchange. Passing your own netname 96 * only works if the server on the other side is running under 97 * your UID. 98 */ 99 if (!host2netname(netname, master, domain)) { 100 clnt_destroy(clnt); 101 return(YPERR_BADARGS); 102 } 103 104 /* Make up a DES session key. */ 105 key_gendes(&des_key); 106 107 /* Set up DES authentication. */ 108 if ((clnt->cl_auth = (AUTH *)authdes_create(netname, WINDOW, NULL, 109 &des_key)) == NULL) { 110 clnt_destroy(clnt); 111 return(YPERR_RESRC); 112 } 113 114 /* Set a timeout for clnt_call(). */ 115 timeout.tv_usec = 0; 116 timeout.tv_sec = TIMEOUT; 117 118 /* 119 * Make the call. Note that we use clnt_call() here rather than 120 * the rpcgen-erated client stubs. We could use those stubs, but 121 * then we'd have to do some gymnastics to get at the error 122 * information to figure out what error code to send back to the 123 * caller. With clnt_call(), we get the error status returned to 124 * us right away, and we only have to exert a small amount of 125 * extra effort. 126 */ 127 switch(ypop) { 128 case YPOP_CHANGE: 129 upargs.mapname = map; 130 upargs.key.yp_buf_len = keylen; 131 upargs.key.yp_buf_val = key; 132 upargs.datum.yp_buf_len = datalen; 133 upargs.datum.yp_buf_val = data; 134 135 if ((rval = clnt_call(clnt, YPU_CHANGE, xdr_ypupdate_args, 136 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 137 if (rval == RPC_AUTHERROR) 138 res = YPERR_ACCESS; 139 else 140 res = YPERR_RPC; 141 } 142 143 break; 144 case YPOP_INSERT: 145 upargs.mapname = map; 146 upargs.key.yp_buf_len = keylen; 147 upargs.key.yp_buf_val = key; 148 upargs.datum.yp_buf_len = datalen; 149 upargs.datum.yp_buf_val = data; 150 151 if ((rval = clnt_call(clnt, YPU_INSERT, xdr_ypupdate_args, 152 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 153 if (rval == RPC_AUTHERROR) 154 res = YPERR_ACCESS; 155 else 156 res = YPERR_RPC; 157 } 158 159 break; 160 case YPOP_DELETE: 161 delargs.mapname = map; 162 delargs.key.yp_buf_len = keylen; 163 delargs.key.yp_buf_val = key; 164 165 if ((rval = clnt_call(clnt, YPU_DELETE, xdr_ypdelete_args, 166 &delargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 167 if (rval == RPC_AUTHERROR) 168 res = YPERR_ACCESS; 169 else 170 res = YPERR_RPC; 171 } 172 173 break; 174 case YPOP_STORE: 175 upargs.mapname = map; 176 upargs.key.yp_buf_len = keylen; 177 upargs.key.yp_buf_val = key; 178 upargs.datum.yp_buf_len = datalen; 179 upargs.datum.yp_buf_val = data; 180 181 if ((rval = clnt_call(clnt, YPU_STORE, xdr_ypupdate_args, 182 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 183 if (rval == RPC_AUTHERROR) 184 res = YPERR_ACCESS; 185 else 186 res = YPERR_RPC; 187 } 188 189 break; 190 default: 191 res = YPERR_BADARGS; 192 break; 193 } 194 195 /* All done: tear down the connection. */ 196 auth_destroy(clnt->cl_auth); 197 clnt_destroy(clnt); 198 free(master); 199 200 return(res); 201} 202