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 * $FreeBSD: src/lib/librpcsvc/yp_update.c,v 1.2.2.1 2002/02/15 00:46:54 des Exp $ 39 * $DragonFly: src/lib/librpcsvc/yp_update.c,v 1.2 2003/06/17 04:26:51 dillon Exp $ 40 * 41 * $FreeBSD: src/lib/librpcsvc/yp_update.c,v 1.2.2.1 2002/02/15 00:46:54 des Exp $ 42 */ 43 44 #include <stdlib.h> 45 #include <rpc/rpc.h> 46 #include <rpcsvc/yp_prot.h> 47 #include <rpcsvc/ypclnt.h> 48 #include <rpcsvc/ypupdate_prot.h> 49 #include <rpc/key_prot.h> 50 51 #ifndef WINDOW 52 #define WINDOW (60*60) 53 #endif 54 55 #ifndef TIMEOUT 56 #define TIMEOUT 300 57 #endif 58 59 int 60 yp_update(domain, map, ypop, key, keylen, data, datalen) 61 char *domain; 62 char *map; 63 unsigned int ypop; 64 char *key; 65 int keylen; 66 char *data; 67 int datalen; 68 { 69 char *master; 70 int rval; 71 unsigned int res; 72 struct ypupdate_args upargs; 73 struct ypdelete_args delargs; 74 CLIENT *clnt; 75 char netname[MAXNETNAMELEN+1]; 76 des_block des_key; 77 struct timeval timeout; 78 79 /* Get the master server name for 'domain.' */ 80 if ((rval = yp_master(domain, map, &master))) 81 return(rval); 82 83 /* Check that ypupdated is running there. */ 84 if (getrpcport(master, YPU_PROG, YPU_VERS, ypop)) 85 return(YPERR_DOMAIN); 86 87 /* Get a handle. */ 88 if ((clnt = clnt_create(master, YPU_PROG, YPU_VERS, "tcp")) == NULL) 89 return(YPERR_RPC); 90 91 /* 92 * Assemble netname of server. 93 * NOTE: It's difficult to discern from the documentation, but 94 * when you make a Secure RPC call, the netname you pass should 95 * be the netname of the guy on the other side, not your own 96 * netname. This is how the client side knows what public key 97 * to use for the initial exchange. Passing your own netname 98 * only works if the server on the other side is running under 99 * your UID. 100 */ 101 if (!host2netname(netname, master, domain)) { 102 clnt_destroy(clnt); 103 return(YPERR_BADARGS); 104 } 105 106 /* Make up a DES session key. */ 107 key_gendes(&des_key); 108 109 /* Set up DES authentication. */ 110 if ((clnt->cl_auth = (AUTH *)authdes_create(netname, WINDOW, NULL, 111 &des_key)) == NULL) { 112 clnt_destroy(clnt); 113 return(YPERR_RESRC); 114 } 115 116 /* Set a timeout for clnt_call(). */ 117 timeout.tv_usec = 0; 118 timeout.tv_sec = TIMEOUT; 119 120 /* 121 * Make the call. Note that we use clnt_call() here rather than 122 * the rpcgen-erated client stubs. We could use those stubs, but 123 * then we'd have to do some gymnastics to get at the error 124 * information to figure out what error code to send back to the 125 * caller. With clnt_call(), we get the error status returned to 126 * us right away, and we only have to exert a small amount of 127 * extra effort. 128 */ 129 switch (ypop) { 130 case YPOP_CHANGE: 131 upargs.mapname = map; 132 upargs.key.yp_buf_len = keylen; 133 upargs.key.yp_buf_val = key; 134 upargs.datum.yp_buf_len = datalen; 135 upargs.datum.yp_buf_val = data; 136 137 if ((rval = clnt_call(clnt, YPU_CHANGE, xdr_ypupdate_args, 138 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 139 if (rval == RPC_AUTHERROR) 140 res = YPERR_ACCESS; 141 else 142 res = YPERR_RPC; 143 } 144 145 break; 146 case YPOP_INSERT: 147 upargs.mapname = map; 148 upargs.key.yp_buf_len = keylen; 149 upargs.key.yp_buf_val = key; 150 upargs.datum.yp_buf_len = datalen; 151 upargs.datum.yp_buf_val = data; 152 153 if ((rval = clnt_call(clnt, YPU_INSERT, xdr_ypupdate_args, 154 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 155 if (rval == RPC_AUTHERROR) 156 res = YPERR_ACCESS; 157 else 158 res = YPERR_RPC; 159 } 160 161 break; 162 case YPOP_DELETE: 163 delargs.mapname = map; 164 delargs.key.yp_buf_len = keylen; 165 delargs.key.yp_buf_val = key; 166 167 if ((rval = clnt_call(clnt, YPU_DELETE, xdr_ypdelete_args, 168 &delargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 169 if (rval == RPC_AUTHERROR) 170 res = YPERR_ACCESS; 171 else 172 res = YPERR_RPC; 173 } 174 175 break; 176 case YPOP_STORE: 177 upargs.mapname = map; 178 upargs.key.yp_buf_len = keylen; 179 upargs.key.yp_buf_val = key; 180 upargs.datum.yp_buf_len = datalen; 181 upargs.datum.yp_buf_val = data; 182 183 if ((rval = clnt_call(clnt, YPU_STORE, xdr_ypupdate_args, 184 &upargs, xdr_u_int, &res, timeout)) != RPC_SUCCESS) { 185 if (rval == RPC_AUTHERROR) 186 res = YPERR_ACCESS; 187 else 188 res = YPERR_RPC; 189 } 190 191 break; 192 default: 193 res = YPERR_BADARGS; 194 break; 195 } 196 197 /* All done: tear down the connection. */ 198 auth_destroy(clnt->cl_auth); 199 clnt_destroy(clnt); 200 free(master); 201 202 return(res); 203 } 204