/*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (c) 1995, 1996 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * ypupdate client-side library function. * * Written by Bill Paul <wpaul@ctr.columbia.edu> * Center for Telecommunications Research * Columbia University, New York City */ #include <sys/cdefs.h> #include <stdlib.h> #include <rpc/rpc.h> #include <rpcsvc/yp_prot.h> #include <rpcsvc/ypclnt.h> #include <rpcsvc/ypupdate_prot.h> #include <rpc/key_prot.h> #ifndef WINDOW #define WINDOW (60*60) #endif #ifndef TIMEOUT #define TIMEOUT 300 #endif int yp_update(char *domain, char *map, unsigned int ypop, char *key, int keylen, char *data, int datalen) { char *master; int rval; unsigned int res; struct ypupdate_args upargs; struct ypdelete_args delargs; CLIENT *clnt; char netname[MAXNETNAMELEN+1]; des_block des_key; struct timeval timeout; /* Get the master server name for 'domain.' */ if ((rval = yp_master(domain, map, &master))) return(rval); /* Check that ypupdated is running there. */ if (getrpcport(master, YPU_PROG, YPU_VERS, ypop)) return(YPERR_DOMAIN); /* Get a handle. */ if ((clnt = clnt_create(master, YPU_PROG, YPU_VERS, "tcp")) == NULL) return(YPERR_RPC); /* * Assemble netname of server. * NOTE: It's difficult to discern from the documentation, but * when you make a Secure RPC call, the netname you pass should * be the netname of the guy on the other side, not your own * netname. This is how the client side knows what public key * to use for the initial exchange. Passing your own netname * only works if the server on the other side is running under * your UID. */ if (!host2netname(netname, master, domain)) { clnt_destroy(clnt); return(YPERR_BADARGS); } /* Make up a DES session key. */ key_gendes(&des_key); /* Set up DES authentication. */ if ((clnt->cl_auth = (AUTH *)authdes_create(netname, WINDOW, NULL, &des_key)) == NULL) { clnt_destroy(clnt); return(YPERR_RESRC); } /* Set a timeout for clnt_call(). */ timeout.tv_usec = 0; timeout.tv_sec = TIMEOUT; /* * Make the call. Note that we use clnt_call() here rather than * the rpcgen-erated client stubs. We could use those stubs, but * then we'd have to do some gymnastics to get at the error * information to figure out what error code to send back to the * caller. With clnt_call(), we get the error status returned to * us right away, and we only have to exert a small amount of * extra effort. */ switch (ypop) { case YPOP_CHANGE: upargs.mapname = map; upargs.key.yp_buf_len = keylen; upargs.key.yp_buf_val = key; upargs.datum.yp_buf_len = datalen; upargs.datum.yp_buf_val = data; if ((rval = clnt_call(clnt, YPU_CHANGE, (xdrproc_t)xdr_ypupdate_args, &upargs, (xdrproc_t)xdr_u_int, &res, timeout)) != RPC_SUCCESS) { if (rval == RPC_AUTHERROR) res = YPERR_ACCESS; else res = YPERR_RPC; } break; case YPOP_INSERT: upargs.mapname = map; upargs.key.yp_buf_len = keylen; upargs.key.yp_buf_val = key; upargs.datum.yp_buf_len = datalen; upargs.datum.yp_buf_val = data; if ((rval = clnt_call(clnt, YPU_INSERT, (xdrproc_t)xdr_ypupdate_args, &upargs, (xdrproc_t)xdr_u_int, &res, timeout)) != RPC_SUCCESS) { if (rval == RPC_AUTHERROR) res = YPERR_ACCESS; else res = YPERR_RPC; } break; case YPOP_DELETE: delargs.mapname = map; delargs.key.yp_buf_len = keylen; delargs.key.yp_buf_val = key; if ((rval = clnt_call(clnt, YPU_DELETE, (xdrproc_t)xdr_ypdelete_args, &delargs, (xdrproc_t)xdr_u_int, &res, timeout)) != RPC_SUCCESS) { if (rval == RPC_AUTHERROR) res = YPERR_ACCESS; else res = YPERR_RPC; } break; case YPOP_STORE: upargs.mapname = map; upargs.key.yp_buf_len = keylen; upargs.key.yp_buf_val = key; upargs.datum.yp_buf_len = datalen; upargs.datum.yp_buf_val = data; if ((rval = clnt_call(clnt, YPU_STORE, (xdrproc_t)xdr_ypupdate_args, &upargs, (xdrproc_t)xdr_u_int, &res, timeout)) != RPC_SUCCESS) { if (rval == RPC_AUTHERROR) res = YPERR_ACCESS; else res = YPERR_RPC; } break; default: res = YPERR_BADARGS; break; } /* All done: tear down the connection. */ auth_destroy(clnt->cl_auth); clnt_destroy(clnt); free(master); return(res); }
