yp_update.c revision 90298
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 90298 2002-02-06 15:26:07Z des $"); 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(char *domain, char *map, unsigned int ypop, char *key, int keylen, 59 char *data, int datalen) 60{ 61 char *master; 62 int rval; 63 unsigned int res; 64 struct ypupdate_args upargs; 65 struct ypdelete_args delargs; 66 CLIENT *clnt; 67 char netname[MAXNETNAMELEN+1]; 68 des_block des_key; 69 struct timeval timeout; 70 71 /* Get the master server name for 'domain.' */ 72 if ((rval = yp_master(domain, map, &master))) 73 return(rval); 74 75 /* Check that ypupdated is running there. */ 76 if (getrpcport(master, YPU_PROG, YPU_VERS, ypop)) 77 return(YPERR_DOMAIN); 78 79 /* Get a handle. */ 80 if ((clnt = clnt_create(master, YPU_PROG, YPU_VERS, "tcp")) == NULL) 81 return(YPERR_RPC); 82 83 /* 84 * Assemble netname of server. 85 * NOTE: It's difficult to discern from the documentation, but 86 * when you make a Secure RPC call, the netname you pass should 87 * be the netname of the guy on the other side, not your own 88 * netname. This is how the client side knows what public key 89 * to use for the initial exchange. Passing your own netname 90 * only works if the server on the other side is running under 91 * your UID. 92 */ 93 if (!host2netname(netname, master, domain)) { 94 clnt_destroy(clnt); 95 return(YPERR_BADARGS); 96 } 97 98 /* Make up a DES session key. */ 99 key_gendes(&des_key); 100 101 /* Set up DES authentication. */ 102 if ((clnt->cl_auth = (AUTH *)authdes_create(netname, WINDOW, NULL, 103 &des_key)) == NULL) { 104 clnt_destroy(clnt); 105 return(YPERR_RESRC); 106 } 107 108 /* Set a timeout for clnt_call(). */ 109 timeout.tv_usec = 0; 110 timeout.tv_sec = TIMEOUT; 111 112 /* 113 * Make the call. Note that we use clnt_call() here rather than 114 * the rpcgen-erated client stubs. We could use those stubs, but 115 * then we'd have to do some gymnastics to get at the error 116 * information to figure out what error code to send back to the 117 * caller. With clnt_call(), we get the error status returned to 118 * us right away, and we only have to exert a small amount of 119 * extra effort. 120 */ 121 switch (ypop) { 122 case YPOP_CHANGE: 123 upargs.mapname = map; 124 upargs.key.yp_buf_len = keylen; 125 upargs.key.yp_buf_val = key; 126 upargs.datum.yp_buf_len = datalen; 127 upargs.datum.yp_buf_val = data; 128 129 if ((rval = clnt_call(clnt, YPU_CHANGE, xdr_ypupdate_args, 130 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 131 if (rval == RPC_AUTHERROR) 132 res = YPERR_ACCESS; 133 else 134 res = YPERR_RPC; 135 } 136 137 break; 138 case YPOP_INSERT: 139 upargs.mapname = map; 140 upargs.key.yp_buf_len = keylen; 141 upargs.key.yp_buf_val = key; 142 upargs.datum.yp_buf_len = datalen; 143 upargs.datum.yp_buf_val = data; 144 145 if ((rval = clnt_call(clnt, YPU_INSERT, xdr_ypupdate_args, 146 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 147 if (rval == RPC_AUTHERROR) 148 res = YPERR_ACCESS; 149 else 150 res = YPERR_RPC; 151 } 152 153 break; 154 case YPOP_DELETE: 155 delargs.mapname = map; 156 delargs.key.yp_buf_len = keylen; 157 delargs.key.yp_buf_val = key; 158 159 if ((rval = clnt_call(clnt, YPU_DELETE, xdr_ypdelete_args, 160 &delargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 161 if (rval == RPC_AUTHERROR) 162 res = YPERR_ACCESS; 163 else 164 res = YPERR_RPC; 165 } 166 167 break; 168 case YPOP_STORE: 169 upargs.mapname = map; 170 upargs.key.yp_buf_len = keylen; 171 upargs.key.yp_buf_val = key; 172 upargs.datum.yp_buf_len = datalen; 173 upargs.datum.yp_buf_val = data; 174 175 if ((rval = clnt_call(clnt, YPU_STORE, xdr_ypupdate_args, 176 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 177 if (rval == RPC_AUTHERROR) 178 res = YPERR_ACCESS; 179 else 180 res = YPERR_RPC; 181 } 182 183 break; 184 default: 185 res = YPERR_BADARGS; 186 break; 187 } 188 189 /* All done: tear down the connection. */ 190 auth_destroy(clnt->cl_auth); 191 clnt_destroy(clnt); 192 free(master); 193 194 return(res); 195} 196