yp_server.c revision 24780
112891Swpaul/* 212891Swpaul * Copyright (c) 1995 312891Swpaul * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 412891Swpaul * 512891Swpaul * Redistribution and use in source and binary forms, with or without 612891Swpaul * modification, are permitted provided that the following conditions 712891Swpaul * are met: 812891Swpaul * 1. Redistributions of source code must retain the above copyright 912891Swpaul * notice, this list of conditions and the following disclaimer. 1012891Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1112891Swpaul * notice, this list of conditions and the following disclaimer in the 1212891Swpaul * documentation and/or other materials provided with the distribution. 1312891Swpaul * 3. All advertising materials mentioning features or use of this software 1412891Swpaul * must display the following acknowledgement: 1512891Swpaul * This product includes software developed by Bill Paul. 1612891Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1712891Swpaul * may be used to endorse or promote products derived from this software 1812891Swpaul * without specific prior written permission. 1912891Swpaul * 2012891Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2112891Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2212891Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2312891Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE 2412891Swpaul * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2512891Swpaul * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2612891Swpaul * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2712891Swpaul * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2812891Swpaul * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2912891Swpaul * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3012891Swpaul * SUCH DAMAGE. 3112891Swpaul * 3212891Swpaul */ 3312891Swpaul 3420818Swpaul#include "yp.h" 3512891Swpaul#include "yp_extern.h" 3612891Swpaul#include <stdlib.h> 3712891Swpaul#include <dirent.h> 3812891Swpaul#include <sys/stat.h> 3912891Swpaul#include <sys/param.h> 4012891Swpaul#include <errno.h> 4112891Swpaul#include <sys/types.h> 4212891Swpaul#include <sys/socket.h> 4312891Swpaul#include <netinet/in.h> 4412891Swpaul#include <arpa/inet.h> 4512997Swpaul#include <rpc/rpc.h> 4612891Swpaul 4712891Swpaul#ifndef lint 4824780Swpaulstatic const char rcsid[] = "$Id: yp_server.c,v 1.5 1997/03/15 06:06:06 wpaul Exp wpaul $"; 4912891Swpaul#endif /* not lint */ 5012891Swpaul 5112891Swpaulint forked = 0; 5212891Swpaulint children = 0; 5319161Swpaulstatic char *master_string = "YP_MASTER_NAME"; 5419161Swpaulstatic char *order_string = "YP_LAST_MODIFIED"; 5519161Swpaulstatic int master_sz = sizeof("YP_MASTER_NAME") - 1; 5619161Swpaulstatic int order_sz = sizeof("YP_LAST_MODIFIED") - 1; 5712891Swpaul 5814262Swpaul/* 5914262Swpaul * NIS v2 support. This is where most of the action happens. 6014262Swpaul */ 6114262Swpaul 6212891Swpaulvoid * 6312891Swpaulypproc_null_2_svc(void *argp, struct svc_req *rqstp) 6412891Swpaul{ 6512891Swpaul static char * result; 6612891Swpaul static char rval = 0; 6712891Swpaul 6819161Swpaul#ifdef DB_CACHE 6919161Swpaul if (yp_access(NULL, NULL, (struct svc_req *)rqstp)) 7019161Swpaul#else 7112891Swpaul if (yp_access(NULL, (struct svc_req *)rqstp)) 7219161Swpaul#endif 7312891Swpaul return(NULL); 7412891Swpaul 7512891Swpaul result = &rval; 7612891Swpaul 7712891Swpaul return((void *) &result); 7812891Swpaul} 7912891Swpaul 8012891Swpaulbool_t * 8112891Swpaulypproc_domain_2_svc(domainname *argp, struct svc_req *rqstp) 8212891Swpaul{ 8312891Swpaul static bool_t result; 8412891Swpaul 8519161Swpaul#ifdef DB_CACHE 8619161Swpaul if (yp_access(NULL, NULL, (struct svc_req *)rqstp)) { 8719161Swpaul#else 8812891Swpaul if (yp_access(NULL, (struct svc_req *)rqstp)) { 8919161Swpaul#endif 9012891Swpaul result = FALSE; 9112891Swpaul return (&result); 9212891Swpaul } 9312891Swpaul 9412891Swpaul if (argp == NULL || yp_validdomain(*argp)) 9512891Swpaul result = FALSE; 9612891Swpaul else 9712891Swpaul result = TRUE; 9812891Swpaul 9912891Swpaul return (&result); 10012891Swpaul} 10112891Swpaul 10212891Swpaulbool_t * 10312891Swpaulypproc_domain_nonack_2_svc(domainname *argp, struct svc_req *rqstp) 10412891Swpaul{ 10512891Swpaul static bool_t result; 10612891Swpaul 10719161Swpaul#ifdef DB_CACHE 10819161Swpaul if (yp_access(NULL, NULL, (struct svc_req *)rqstp)) 10919161Swpaul#else 11012891Swpaul if (yp_access(NULL, (struct svc_req *)rqstp)) 11119161Swpaul#endif 11212891Swpaul return (NULL); 11312891Swpaul 11412891Swpaul if (argp == NULL || yp_validdomain(*argp)) 11512891Swpaul return (NULL); 11612891Swpaul else 11712891Swpaul result = TRUE; 11812891Swpaul 11912891Swpaul return (&result); 12012891Swpaul} 12112891Swpaul 12212891Swpaulypresp_val * 12312891Swpaulypproc_match_2_svc(ypreq_key *argp, struct svc_req *rqstp) 12412891Swpaul{ 12512891Swpaul static ypresp_val result; 12612891Swpaul 12714304Swpaul result.val.valdat_val = ""; 12814304Swpaul result.val.valdat_len = 0; 12919161Swpaul 13019161Swpaul#ifdef DB_CACHE 13119161Swpaul if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) { 13219161Swpaul#else 13312891Swpaul if (yp_access(argp->map, (struct svc_req *)rqstp)) { 13419161Swpaul#endif 13512891Swpaul result.stat = YP_YPERR; 13612891Swpaul return (&result); 13712891Swpaul } 13812891Swpaul 13912891Swpaul if (argp->domain == NULL || argp->map == NULL) { 14012891Swpaul result.stat = YP_BADARGS; 14112891Swpaul return (&result); 14212891Swpaul } 14312891Swpaul 14420818Swpaul if (yp_select_map(argp->map, argp->domain, &argp->key, 1) != YP_TRUE) { 14520818Swpaul result.stat = yp_errno; 14620818Swpaul return(&result); 14712891Swpaul } 14812891Swpaul 14920818Swpaul result.stat = yp_getbykey(&argp->key, &result.val); 15020818Swpaul 15112891Swpaul /* 15212891Swpaul * Do DNS lookups for hosts maps if database lookup failed. 15312891Swpaul */ 15412891Swpaul 15519161Swpaul#ifdef DB_CACHE 15619161Swpaul if (result.stat != YP_TRUE && 15719161Swpaul (yp_testflag(argp->map, argp->domain, YP_INTERDOMAIN) || 15819161Swpaul (strstr(argp->map, "hosts") && do_dns))) { 15919161Swpaul#else 16012891Swpaul if (do_dns && result.stat != YP_TRUE && strstr(argp->map, "hosts")) { 16119161Swpaul#endif 16220818Swpaul 16320818Swpaul /* NUL terminate! NUL terminate!! NUL TERMINATE!!! */ 16420818Swpaul argp->key.keydat_val[argp->key.keydat_len] = '\0'; 16512891Swpaul 16612891Swpaul if (debug) 16712891Swpaul yp_error("Doing DNS lookup of %.*s", 16812891Swpaul argp->key.keydat_len, 16912891Swpaul argp->key.keydat_val); 17012891Swpaul 17112891Swpaul if (!strcmp(argp->map, "hosts.byname")) 17220907Swpaul result.stat = yp_async_lookup_name(rqstp, 17320818Swpaul (char *)argp->key.keydat_val); 17412891Swpaul else if (!strcmp(argp->map, "hosts.byaddr")) 17520907Swpaul result.stat = yp_async_lookup_addr(rqstp, 17620818Swpaul (char *)argp->key.keydat_val); 17712891Swpaul 17820818Swpaul if (result.stat == YP_TRUE) 17920818Swpaul return(NULL); 18012891Swpaul } 18112891Swpaul 18212891Swpaul return (&result); 18312891Swpaul} 18412891Swpaul 18512891Swpaulypresp_key_val * 18612891Swpaulypproc_first_2_svc(ypreq_nokey *argp, struct svc_req *rqstp) 18712891Swpaul{ 18812891Swpaul static ypresp_key_val result; 18912891Swpaul 19014304Swpaul result.val.valdat_val = result.key.keydat_val = ""; 19114304Swpaul result.val.valdat_len = result.key.keydat_len = 0; 19219161Swpaul 19319161Swpaul#ifdef DB_CACHE 19419161Swpaul if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) { 19519161Swpaul#else 19612891Swpaul if (yp_access(argp->map, (struct svc_req *)rqstp)) { 19719161Swpaul#endif 19812891Swpaul result.stat = YP_YPERR; 19912891Swpaul return (&result); 20012891Swpaul } 20112891Swpaul 20212891Swpaul if (argp->domain == NULL) { 20312891Swpaul result.stat = YP_BADARGS; 20412891Swpaul return (&result); 20512891Swpaul } 20612891Swpaul 20720818Swpaul if (yp_select_map(argp->map, argp->domain, &result.key, 0) != YP_TRUE) { 20812891Swpaul result.stat = yp_errno; 20912891Swpaul return(&result); 21012891Swpaul } 21112891Swpaul 21220818Swpaul result.stat = yp_firstbykey(&result.key, &result.val); 21312891Swpaul 21412891Swpaul return (&result); 21512891Swpaul} 21612891Swpaul 21712891Swpaulypresp_key_val * 21812891Swpaulypproc_next_2_svc(ypreq_key *argp, struct svc_req *rqstp) 21912891Swpaul{ 22012891Swpaul static ypresp_key_val result; 22112891Swpaul 22214304Swpaul result.val.valdat_val = result.key.keydat_val = ""; 22314304Swpaul result.val.valdat_len = result.key.keydat_len = 0; 22415426Swpaul 22519161Swpaul#ifdef DB_CACHE 22619161Swpaul if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) { 22719161Swpaul#else 22812891Swpaul if (yp_access(argp->map, (struct svc_req *)rqstp)) { 22919161Swpaul#endif 23012891Swpaul result.stat = YP_YPERR; 23112891Swpaul return (&result); 23212891Swpaul } 23312891Swpaul 23412891Swpaul if (argp->domain == NULL || argp->map == NULL) { 23512891Swpaul result.stat = YP_BADARGS; 23612891Swpaul return (&result); 23712891Swpaul } 23812891Swpaul 23920818Swpaul if (yp_select_map(argp->map, argp->domain, &argp->key, 0) != YP_TRUE) { 24012891Swpaul result.stat = yp_errno; 24112891Swpaul return(&result); 24212891Swpaul } 24312891Swpaul 24420818Swpaul result.key.keydat_len = argp->key.keydat_len; 24520818Swpaul result.key.keydat_val = argp->key.keydat_val; 24612891Swpaul 24720818Swpaul result.stat = yp_nextbykey(&result.key, &result.val); 24820818Swpaul 24912891Swpaul return (&result); 25012891Swpaul} 25112891Swpaul 25212997Swpaulstatic void ypxfr_callback(rval,addr,transid,prognum,port) 25312997Swpaul ypxfrstat rval; 25412997Swpaul struct sockaddr_in *addr; 25512997Swpaul unsigned int transid; 25612997Swpaul unsigned int prognum; 25712997Swpaul unsigned long port; 25812997Swpaul{ 25912997Swpaul CLIENT *clnt; 26012997Swpaul int sock = RPC_ANYSOCK; 26112997Swpaul struct timeval timeout; 26212997Swpaul yppushresp_xfr ypxfr_resp; 26313375Swpaul struct rpc_err err; 26412997Swpaul 26513375Swpaul timeout.tv_sec = 5; 26612997Swpaul timeout.tv_usec = 0; 26712997Swpaul addr->sin_port = htons(port); 26812997Swpaul 26919131Swpaul if ((clnt = clntudp_create(addr,prognum,1,timeout,&sock)) == NULL) { 27019131Swpaul yp_error("%s: %s", inet_ntoa(addr->sin_addr), 27119161Swpaul clnt_spcreateerror("failed to establish callback handle")); 27219131Swpaul return; 27319131Swpaul } 27412997Swpaul 27512997Swpaul ypxfr_resp.status = rval; 27612997Swpaul ypxfr_resp.transid = transid; 27712997Swpaul 27813375Swpaul /* Turn the timeout off -- we don't want to block. */ 27913375Swpaul timeout.tv_sec = 0; 28013375Swpaul if (clnt_control(clnt, CLSET_TIMEOUT, (char *)&timeout) == FALSE) 28113375Swpaul yp_error("failed to set timeout on ypproc_xfr callback"); 28212997Swpaul 28313375Swpaul if (yppushproc_xfrresp_1(&ypxfr_resp, clnt) == NULL) { 28413375Swpaul clnt_geterr(clnt, &err); 28513375Swpaul if (err.re_status != RPC_SUCCESS && 28613375Swpaul err.re_status != RPC_TIMEDOUT) 28713375Swpaul yp_error("%s", clnt_sperror(clnt, 28813375Swpaul "ypxfr callback failed")); 28913375Swpaul } 29013375Swpaul 29112997Swpaul clnt_destroy(clnt); 29212997Swpaul return; 29312997Swpaul} 29412997Swpaul 29515426Swpaul#define YPXFR_RETURN(CODE) \ 29615426Swpaul /* Order is important: send regular RPC reply, then callback */ \ 29715426Swpaul result.xfrstat = CODE; \ 29815426Swpaul svc_sendreply(rqstp->rq_xprt, xdr_ypresp_xfr, (char *)&result); \ 29915426Swpaul ypxfr_callback(CODE,rqhost,argp->transid, \ 30015426Swpaul argp->prog,argp->port); \ 30115426Swpaul return(NULL); 30215426Swpaul 30312891Swpaulypresp_xfr * 30412891Swpaulypproc_xfr_2_svc(ypreq_xfr *argp, struct svc_req *rqstp) 30512891Swpaul{ 30612891Swpaul static ypresp_xfr result; 30712997Swpaul struct sockaddr_in *rqhost; 30824780Swpaul ypresp_master *mres; 30924780Swpaul ypreq_nokey mreq; 31012891Swpaul 31113375Swpaul result.transid = argp->transid; 31213375Swpaul rqhost = svc_getcaller(rqstp->rq_xprt); 31313375Swpaul 31424780Swpaul /* 31524780Swpaul * The FreeBSD ypxfr(8) program will not talk to a ypserv(8) 31624780Swpaul * or rpc.ypxfrd(8) unless it's using a reserved port, but we 31724780Swpaul * may as well check that the process calling this procedure 31824780Swpaul * is also using one. 31924780Swpaul * 32024780Swpaul * yp_access() may also do a reserved port test, but only 32124780Swpaul * if the YP_SECURE flag is set in the map. For this procedure, 32224780Swpaul * the check should be unconditional. 32324780Swpaul */ 32424780Swpaul if (ntohs(rqhost->sin_port) >= IPPORT_RESERVED) { 32524780Swpaul yp_error("ypxfr request from non-reserved port (%s:%d) -- \ 32624780Swpaulrejecting", inet_ntoa(rqhost->sin_addr), ntohs(rqhost->sin_port)); 32724780Swpaul YPXFR_RETURN(YPXFR_REFUSED) 32824780Swpaul } 32924780Swpaul 33019161Swpaul#ifdef DB_CACHE 33119161Swpaul if (yp_access(argp->map_parms.map, 33219161Swpaul argp->map_parms.domain, (struct svc_req *)rqstp)) { 33319161Swpaul#else 33412891Swpaul if (yp_access(argp->map_parms.map, (struct svc_req *)rqstp)) { 33519161Swpaul#endif 33624780Swpaul YPXFR_RETURN(YPXFR_REFUSED) 33712891Swpaul } 33812891Swpaul 33924780Swpaul 34012891Swpaul if (argp->map_parms.domain == NULL) { 34124780Swpaul YPXFR_RETURN(YPXFR_BADARGS) 34212891Swpaul } 34312891Swpaul 34412891Swpaul if (yp_validdomain(argp->map_parms.domain)) { 34524780Swpaul YPXFR_RETURN(YPXFR_NODOM) 34612891Swpaul } 34712891Swpaul 34824780Swpaul /* 34924780Swpaul * Determine the master host ourselves. The caller may 35024780Swpaul * be up to no good. This has the side effect of verifying 35124780Swpaul * that the requested map and domain actually exist. 35224780Swpaul */ 35324780Swpaul 35424780Swpaul mreq.domain = argp->map_parms.domain; 35524780Swpaul mreq.map = argp->map_parms.map; 35624780Swpaul 35724780Swpaul mres = ypproc_master_2_svc(&mreq, rqstp); 35824780Swpaul 35924780Swpaul if (mres->stat != YP_TRUE) { 36024780Swpaul yp_error("couldn't find master for map %s@%s", 36124780Swpaul argp->map_parms.map, 36224780Swpaul argp->map_parms.domain); 36324780Swpaul yp_error("host at %s (%s) may be pulling my leg", 36424780Swpaul argp->map_parms.peer, 36524780Swpaul inet_ntoa(rqhost->sin_addr)); 36624780Swpaul YPXFR_RETURN(YPXFR_REFUSED) 36724780Swpaul } 36824780Swpaul 36912891Swpaul switch(fork()) { 37012891Swpaul case 0: 37112891Swpaul { 37212891Swpaul char g[11], t[11], p[11]; 37312891Swpaul char ypxfr_command[MAXPATHLEN + 2]; 37412891Swpaul 37512891Swpaul sprintf (ypxfr_command, "%sypxfr", _PATH_LIBEXEC); 37612891Swpaul sprintf (t, "%u", argp->transid); 37712891Swpaul sprintf (g, "%u", argp->prog); 37812891Swpaul sprintf (p, "%u", argp->port); 37922321Swpaul if (debug) { 38012997Swpaul close(0); close(1); close(2); 38122321Swpaul } 38212997Swpaul if (strcmp(yp_dir, _PATH_YP)) { 38314304Swpaul execl(ypxfr_command, "ypxfr", 38414304Swpaul "-d", argp->map_parms.domain, 38524780Swpaul "-h", mres->peer, 38614304Swpaul "-p", yp_dir, "-C", t, 38714304Swpaul g, inet_ntoa(rqhost->sin_addr), 38814304Swpaul p, argp->map_parms.map, 38912997Swpaul NULL); 39012997Swpaul } else { 39114304Swpaul execl(ypxfr_command, "ypxfr", 39214304Swpaul "-d", argp->map_parms.domain, 39324780Swpaul "-h", mres->peer, 39414304Swpaul "-C", t, 39514304Swpaul g, inet_ntoa(rqhost->sin_addr), 39614304Swpaul p, argp->map_parms.map, 39712997Swpaul NULL); 39812997Swpaul } 39912997Swpaul forked++; 40015426Swpaul yp_error("ypxfr execl(%s): %s", ypxfr_command, strerror(errno)); 40124780Swpaul YPXFR_RETURN(YPXFR_XFRERR) 40212997Swpaul break; 40312891Swpaul } 40412891Swpaul case -1: 40512891Swpaul yp_error("ypxfr fork(): %s", strerror(errno)); 40624780Swpaul YPXFR_RETURN(YPXFR_XFRERR) 40712891Swpaul break; 40812891Swpaul default: 40913375Swpaul result.xfrstat = YPXFR_SUCC; 41012997Swpaul children++; 41112997Swpaul forked = 0; 41212891Swpaul break; 41312891Swpaul } 41413375Swpaul 41513375Swpaul return (&result); 41612891Swpaul} 41715426Swpaul#undef YPXFR_RETURN 41812891Swpaul 41912891Swpaulvoid * 42012891Swpaulypproc_clear_2_svc(void *argp, struct svc_req *rqstp) 42112891Swpaul{ 42212891Swpaul static char * result; 42312891Swpaul static char rval = 0; 42412891Swpaul 42519161Swpaul#ifdef DB_CACHE 42619161Swpaul if (yp_access(NULL, NULL, (struct svc_req *)rqstp)) 42719161Swpaul#else 42812891Swpaul if (yp_access(NULL, (struct svc_req *)rqstp)) 42919161Swpaul#endif 43012891Swpaul return (NULL); 43115426Swpaul#ifdef DB_CACHE 43215426Swpaul /* clear out the database cache */ 43315426Swpaul yp_flush_all(); 43415426Swpaul#endif 43514240Swpaul /* Re-read the securenets database for the hell of it. */ 43614240Swpaul load_securenets(); 43714240Swpaul 43812891Swpaul result = &rval; 43912891Swpaul return((void *) &result); 44012891Swpaul} 44112891Swpaul 44212891Swpaul/* 44312891Swpaul * For ypproc_all, we have to send a stream of ypresp_all structures 44412891Swpaul * via TCP, but the XDR filter generated from the yp.x protocol 44512891Swpaul * definition file only serializes one such structure. This means that 44612891Swpaul * to send the whole stream, you need a wrapper which feeds all the 44712891Swpaul * records into the underlying XDR routine until it hits an 'EOF.' 44812891Swpaul * But to use the wrapper, you have to violate the boundaries between 44912891Swpaul * RPC layers by calling svc_sendreply() directly from the ypproc_all 45012891Swpaul * service routine instead of letting the RPC dispatcher do it. 45112891Swpaul * 45212891Swpaul * Bleah. 45312891Swpaul */ 45412891Swpaul 45512891Swpaul/* 45620100Swpaul * Custom XDR routine for serialzing results of ypproc_all: keep 45720100Swpaul * reading from the database and spew until we run out of records 45820100Swpaul * or encounter an error. 45912891Swpaul */ 46012891Swpaulstatic bool_t 46112891Swpaulxdr_my_ypresp_all(register XDR *xdrs, ypresp_all *objp) 46212891Swpaul{ 46320100Swpaul while (1) { 46420100Swpaul /* Get a record. */ 46520100Swpaul if ((objp->ypresp_all_u.val.stat = 46620818Swpaul yp_nextbykey(&objp->ypresp_all_u.val.key, 46720818Swpaul &objp->ypresp_all_u.val.val)) == YP_TRUE) { 46820100Swpaul objp->more = TRUE; 46920100Swpaul } else { 47020100Swpaul objp->more = FALSE; 47120100Swpaul } 47220100Swpaul 47320100Swpaul /* Serialize. */ 47420100Swpaul if (!xdr_ypresp_all(xdrs, objp)) 47520100Swpaul return(FALSE); 47620100Swpaul if (objp->more == FALSE) 47720100Swpaul return(TRUE); 47820100Swpaul } 47912891Swpaul} 48012891Swpaul 48112891Swpaulypresp_all * 48212891Swpaulypproc_all_2_svc(ypreq_nokey *argp, struct svc_req *rqstp) 48312891Swpaul{ 48412891Swpaul static ypresp_all result; 48512891Swpaul 48612891Swpaul /* 48712891Swpaul * Set this here so that the client will be forced to make 48812891Swpaul * at least one attempt to read from us even if all we're 48912891Swpaul * doing is returning an error. 49012891Swpaul */ 49112891Swpaul result.more = TRUE; 49214304Swpaul result.ypresp_all_u.val.key.keydat_len = 0; 49314304Swpaul result.ypresp_all_u.val.key.keydat_val = ""; 49412891Swpaul 49519161Swpaul#ifdef DB_CACHE 49619161Swpaul if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) { 49719161Swpaul#else 49812891Swpaul if (yp_access(argp->map, (struct svc_req *)rqstp)) { 49919161Swpaul#endif 50012891Swpaul result.ypresp_all_u.val.stat = YP_YPERR; 50112891Swpaul return (&result); 50212891Swpaul } 50312891Swpaul 50412891Swpaul if (argp->domain == NULL || argp->map == NULL) { 50512891Swpaul result.ypresp_all_u.val.stat = YP_BADARGS; 50612891Swpaul return (&result); 50712891Swpaul } 50812891Swpaul 50920100Swpaul /* 51021389Swpaul * XXX If we hit the child limit, fail the request. 51121389Swpaul * If we don't, and the map is large, we could block for 51221389Swpaul * a long time in the parent. 51321389Swpaul */ 51421389Swpaul if (children >= MAX_CHILDREN) { 51521389Swpaul result.ypresp_all_u.val.stat = YP_YPERR; 51621389Swpaul return(&result); 51721389Swpaul } 51821389Swpaul 51921389Swpaul /* 52020100Swpaul * The ypproc_all procedure can take a while to complete. 52120100Swpaul * Best to handle it in a subprocess so the parent doesn't 52220100Swpaul * block. (Is there a better way to do this? Maybe with 52320100Swpaul * async socket I/O?) 52420100Swpaul */ 52520100Swpaul if (!debug && children < MAX_CHILDREN && fork()) { 52620100Swpaul children++; 52720100Swpaul forked = 0; 52820100Swpaul return (NULL); 52920100Swpaul } else { 53020100Swpaul forked++; 53120100Swpaul } 53220100Swpaul 53320818Swpaul if (yp_select_map(argp->map, argp->domain, 53420818Swpaul &result.ypresp_all_u.val.key, 0) != YP_TRUE) { 53512891Swpaul result.ypresp_all_u.val.stat = yp_errno; 53612891Swpaul return(&result); 53712891Swpaul } 53812891Swpaul 53912891Swpaul /* Kick off the actual data transfer. */ 54020100Swpaul svc_sendreply(rqstp->rq_xprt, xdr_my_ypresp_all, (char *)&result); 54120100Swpaul 54212891Swpaul /* 54312891Swpaul * Returning NULL prevents the dispatcher from calling 54412891Swpaul * svc_sendreply() since we already did it. 54512891Swpaul */ 54612891Swpaul return (NULL); 54712891Swpaul} 54812891Swpaul 54912891Swpaulypresp_master * 55012891Swpaulypproc_master_2_svc(ypreq_nokey *argp, struct svc_req *rqstp) 55112891Swpaul{ 55212891Swpaul static ypresp_master result; 55315426Swpaul static char ypvalbuf[YPMAXRECORD]; 55420818Swpaul keydat key = { master_sz, master_string }; 55520818Swpaul valdat val; 55612891Swpaul 55714303Swpaul result.peer = ""; 55814303Swpaul 55919161Swpaul#ifdef DB_CACHE 56019161Swpaul if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) { 56119161Swpaul#else 56219161Swpaul if (yp_access(argp->map, (struct svc_req *)rqstp)) { 56319161Swpaul#endif 56412891Swpaul result.stat = YP_YPERR; 56512891Swpaul return(&result); 56612891Swpaul } 56712891Swpaul 56812891Swpaul if (argp->domain == NULL) { 56912891Swpaul result.stat = YP_BADARGS; 57012891Swpaul return (&result); 57112891Swpaul } 57212891Swpaul 57320818Swpaul if (yp_select_map(argp->map, argp->domain, &key, 1) != YP_TRUE) { 57420818Swpaul result.stat = yp_errno; 57520818Swpaul return(&result); 57620818Swpaul } 57720818Swpaul 57815426Swpaul /* 57915426Swpaul * Note that we copy the data retrieved from the database to 58015426Swpaul * a private buffer and NUL terminate the buffer rather than 58115426Swpaul * terminating the data in place. We do this because by stuffing 58215426Swpaul * a '\0' into data.data, we will actually be corrupting memory 58315426Swpaul * allocated by the DB package. This is a bad thing now that we 58415426Swpaul * cache DB handles rather than closing the database immediately. 58515426Swpaul */ 58620818Swpaul result.stat = yp_getbykey(&key, &val); 58720818Swpaul if (result.stat == YP_TRUE) { 58820818Swpaul bcopy((char *)val.valdat_val, (char *)&ypvalbuf, 58920818Swpaul val.valdat_len); 59020818Swpaul ypvalbuf[val.valdat_len] = '\0'; 59115426Swpaul result.peer = (char *)&ypvalbuf; 59212891Swpaul } else 59312891Swpaul result.peer = ""; 59412891Swpaul 59512891Swpaul return (&result); 59612891Swpaul} 59712891Swpaul 59812891Swpaulypresp_order * 59912891Swpaulypproc_order_2_svc(ypreq_nokey *argp, struct svc_req *rqstp) 60012891Swpaul{ 60112891Swpaul static ypresp_order result; 60220818Swpaul keydat key = { order_sz, order_string }; 60320818Swpaul valdat val; 60412891Swpaul 60514304Swpaul result.ordernum = 0; 60614304Swpaul 60719161Swpaul#ifdef DB_CACHE 60819161Swpaul if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) { 60919161Swpaul#else 61019161Swpaul if (yp_access(argp->map, (struct svc_req *)rqstp)) { 61119161Swpaul#endif 61212891Swpaul result.stat = YP_YPERR; 61312891Swpaul return(&result); 61412891Swpaul } 61512891Swpaul 61612891Swpaul if (argp->domain == NULL) { 61712891Swpaul result.stat = YP_BADARGS; 61812891Swpaul return (&result); 61912891Swpaul } 62012891Swpaul 62112891Swpaul /* 62212891Swpaul * We could just check the timestamp on the map file, 62312891Swpaul * but that's a hack: we'll only know the last time the file 62412891Swpaul * was touched, not the last time the database contents were 62512891Swpaul * updated. 62612891Swpaul */ 62712891Swpaul 62820818Swpaul if (yp_select_map(argp->map, argp->domain, &key, 1) != YP_TRUE) { 62920818Swpaul result.stat = yp_errno; 63020818Swpaul return(&result); 63120818Swpaul } 63220818Swpaul 63320818Swpaul result.stat = yp_getbykey(&key, &val); 63420818Swpaul 63520818Swpaul if (result.stat == YP_TRUE) 63620818Swpaul result.ordernum = atoi((char *)val.valdat_val); 63712891Swpaul else 63812891Swpaul result.ordernum = 0; 63912891Swpaul 64012891Swpaul return (&result); 64112891Swpaul} 64212891Swpaul 64312891Swpaulstatic void yp_maplist_free(yp_maplist) 64412891Swpaul struct ypmaplist *yp_maplist; 64512891Swpaul{ 64612891Swpaul register struct ypmaplist *next; 64712891Swpaul 64812891Swpaul while(yp_maplist) { 64912891Swpaul next = yp_maplist->next; 65012891Swpaul free(yp_maplist->map); 65112891Swpaul free(yp_maplist); 65212891Swpaul yp_maplist = next; 65312891Swpaul } 65412891Swpaul return; 65512891Swpaul} 65612891Swpaul 65712891Swpaulstatic struct ypmaplist *yp_maplist_create(domain) 65812891Swpaul const char *domain; 65912891Swpaul{ 66012891Swpaul char yp_mapdir[MAXPATHLEN + 2]; 66112891Swpaul char yp_mapname[MAXPATHLEN + 2]; 66212891Swpaul struct ypmaplist *cur = NULL; 66312891Swpaul struct ypmaplist *yp_maplist = NULL; 66412891Swpaul DIR *dird; 66512891Swpaul struct dirent *dirp; 66612891Swpaul struct stat statbuf; 66712891Swpaul 66812891Swpaul snprintf(yp_mapdir, sizeof(yp_mapdir), "%s/%s", yp_dir, domain); 66912891Swpaul 67012891Swpaul if ((dird = opendir(yp_mapdir)) == NULL) { 67113800Swpaul yp_error("opendir(%s) failed: %s", yp_mapdir, strerror(errno)); 67212891Swpaul return(NULL); 67312891Swpaul } 67412891Swpaul 67512891Swpaul while ((dirp = readdir(dird)) != NULL) { 67612891Swpaul if (strcmp(dirp->d_name, ".") && strcmp(dirp->d_name, "..")) { 67714304Swpaul snprintf(yp_mapname, sizeof(yp_mapname), "%s/%s", 67814304Swpaul yp_mapdir,dirp->d_name); 67914304Swpaul if (stat(yp_mapname, &statbuf) < 0 || 68014304Swpaul !S_ISREG(statbuf.st_mode)) 68112891Swpaul continue; 68214304Swpaul if ((cur = (struct ypmaplist *) 68316044Swpaul malloc(sizeof(struct ypmaplist))) == NULL) { 68414304Swpaul yp_error("malloc() failed: %s",strerror(errno)); 68512891Swpaul closedir(dird); 68612891Swpaul yp_maplist_free(yp_maplist); 68712891Swpaul return(NULL); 68812891Swpaul } 68912891Swpaul if ((cur->map = (char *)strdup(dirp->d_name)) == NULL) { 69014304Swpaul yp_error("strdup() failed: %s",strerror(errno)); 69112891Swpaul closedir(dird); 69212891Swpaul yp_maplist_free(yp_maplist); 69312891Swpaul return(NULL); 69412891Swpaul } 69512891Swpaul cur->next = yp_maplist; 69612891Swpaul yp_maplist = cur; 69712891Swpaul if (debug) 69812891Swpaul yp_error("map: %s", yp_maplist->map); 69912891Swpaul } 70012891Swpaul 70112891Swpaul } 70212891Swpaul closedir(dird); 70312891Swpaul return(yp_maplist); 70412891Swpaul} 70512891Swpaul 70612891Swpaulypresp_maplist * 70712891Swpaulypproc_maplist_2_svc(domainname *argp, struct svc_req *rqstp) 70812891Swpaul{ 70915426Swpaul static ypresp_maplist result = { 0, NULL }; 71012891Swpaul 71119161Swpaul#ifdef DB_CACHE 71219161Swpaul if (yp_access(NULL, NULL, (struct svc_req *)rqstp)) { 71319161Swpaul#else 71412891Swpaul if (yp_access(NULL, (struct svc_req *)rqstp)) { 71519161Swpaul#endif 71612891Swpaul result.stat = YP_YPERR; 71712891Swpaul return(&result); 71812891Swpaul } 71912891Swpaul 72012891Swpaul if (argp == NULL) { 72112891Swpaul result.stat = YP_BADARGS; 72212891Swpaul return (&result); 72312891Swpaul } 72412891Swpaul 72512891Swpaul if (yp_validdomain(*argp)) { 72612891Swpaul result.stat = YP_NODOM; 72712891Swpaul return (&result); 72812891Swpaul } 72912891Swpaul 73012891Swpaul /* 73112891Swpaul * We have to construct a linked list for the ypproc_maplist 73212891Swpaul * procedure using dynamically allocated memory. Since the XDR 73312891Swpaul * layer won't free this list for us, we have to deal with it 73412891Swpaul * ourselves. We call yp_maplist_free() first to free any 73512891Swpaul * previously allocated data we may have accumulated to insure 73612891Swpaul * that we have only one linked list in memory at any given 73712891Swpaul * time. 73812891Swpaul */ 73912891Swpaul 74012891Swpaul yp_maplist_free(result.maps); 74112891Swpaul 74212891Swpaul if ((result.maps = yp_maplist_create(*argp)) == NULL) { 74312891Swpaul yp_error("yp_maplist_create failed"); 74412891Swpaul result.stat = YP_YPERR; 74512891Swpaul return(&result); 74612891Swpaul } else 74712891Swpaul result.stat = YP_TRUE; 74812891Swpaul 74912891Swpaul return (&result); 75012891Swpaul} 75114262Swpaul 75214262Swpaul/* 75314262Swpaul * NIS v1 support. The nullproc, domain and domain_nonack 75414262Swpaul * functions from v1 are identical to those in v2, so all 75514262Swpaul * we have to do is hand off to them. 75614262Swpaul * 75714262Swpaul * The other functions are mostly just wrappers around their v2 75814262Swpaul * counterparts. For example, for the v1 'match' procedure, we 75914262Swpaul * crack open the argument structure, make a request to the v2 76014262Swpaul * 'match' function, repackage the data into a v1 response and 76114262Swpaul * then send it on its way. 76214262Swpaul * 76314262Swpaul * Note that we don't support the pull, push and get procedures. 76414262Swpaul * There's little documentation available to show what they 76514262Swpaul * do, and I suspect they're meant largely for map transfers 76614262Swpaul * between master and slave servers. 76714262Swpaul */ 76814262Swpaul 76914262Swpaulvoid * 77014262Swpaulypoldproc_null_1_svc(void *argp, struct svc_req *rqstp) 77114262Swpaul{ 77214262Swpaul return(ypproc_null_2_svc(argp, rqstp)); 77314262Swpaul} 77414262Swpaul 77514262Swpaulbool_t * 77614262Swpaulypoldproc_domain_1_svc(domainname *argp, struct svc_req *rqstp) 77714262Swpaul{ 77814262Swpaul return(ypproc_domain_2_svc(argp, rqstp)); 77914262Swpaul} 78014262Swpaul 78114262Swpaulbool_t * 78214262Swpaulypoldproc_domain_nonack_1_svc(domainname *argp, struct svc_req *rqstp) 78314262Swpaul{ 78414262Swpaul return (ypproc_domain_nonack_2_svc(argp, rqstp)); 78514262Swpaul} 78614262Swpaul 78714304Swpaul/* 78814304Swpaul * the 'match' procedure sends a response of type YPRESP_VAL 78914304Swpaul */ 79014262Swpaulypresponse * 79114262Swpaulypoldproc_match_1_svc(yprequest *argp, struct svc_req *rqstp) 79214262Swpaul{ 79314262Swpaul static ypresponse result; 79414262Swpaul ypresp_val *v2_result; 79514262Swpaul 79614262Swpaul result.yp_resptype = YPRESP_VAL; 79714304Swpaul result.ypresponse_u.yp_resp_valtype.val.valdat_val = ""; 79814304Swpaul result.ypresponse_u.yp_resp_valtype.val.valdat_len = 0; 79914262Swpaul 80014262Swpaul if (argp->yp_reqtype != YPREQ_KEY) { 80114262Swpaul result.ypresponse_u.yp_resp_valtype.stat = YP_BADARGS; 80214262Swpaul return(&result); 80314262Swpaul } 80414262Swpaul 80514262Swpaul v2_result = ypproc_match_2_svc(&argp->yprequest_u.yp_req_keytype,rqstp); 80614262Swpaul if (v2_result == NULL) 80714262Swpaul return(NULL); 80814262Swpaul 80914262Swpaul bcopy((char *)v2_result, 81014262Swpaul (char *)&result.ypresponse_u.yp_resp_valtype, 81114262Swpaul sizeof(ypresp_val)); 81214262Swpaul 81314262Swpaul return (&result); 81414262Swpaul} 81514262Swpaul 81614304Swpaul/* 81714304Swpaul * the 'first' procedure sends a response of type YPRESP_KEY_VAL 81814304Swpaul */ 81914262Swpaulypresponse * 82014262Swpaulypoldproc_first_1_svc(yprequest *argp, struct svc_req *rqstp) 82114262Swpaul{ 82214262Swpaul static ypresponse result; 82314262Swpaul ypresp_key_val *v2_result; 82414262Swpaul 82514262Swpaul result.yp_resptype = YPRESP_KEY_VAL; 82614304Swpaul result.ypresponse_u.yp_resp_key_valtype.val.valdat_val = 82714304Swpaul result.ypresponse_u.yp_resp_key_valtype.key.keydat_val = ""; 82814304Swpaul result.ypresponse_u.yp_resp_key_valtype.val.valdat_len = 82914304Swpaul result.ypresponse_u.yp_resp_key_valtype.key.keydat_len = 0; 83014262Swpaul 83114262Swpaul if (argp->yp_reqtype != YPREQ_NOKEY) { 83214262Swpaul result.ypresponse_u.yp_resp_key_valtype.stat = YP_BADARGS; 83314262Swpaul return(&result); 83414262Swpaul } 83514262Swpaul 83614262Swpaul v2_result = ypproc_first_2_svc(&argp->yprequest_u.yp_req_nokeytype, 83714262Swpaul rqstp); 83814262Swpaul if (v2_result == NULL) 83914262Swpaul return(NULL); 84014262Swpaul 84114262Swpaul bcopy((char *)v2_result, 84214262Swpaul (char *)&result.ypresponse_u.yp_resp_key_valtype, 84314262Swpaul sizeof(ypresp_key_val)); 84414262Swpaul 84514262Swpaul return (&result); 84614262Swpaul} 84714262Swpaul 84814304Swpaul/* 84914304Swpaul * the 'next' procedure sends a response of type YPRESP_KEY_VAL 85014304Swpaul */ 85114262Swpaulypresponse * 85214262Swpaulypoldproc_next_1_svc(yprequest *argp, struct svc_req *rqstp) 85314262Swpaul{ 85414262Swpaul static ypresponse result; 85514262Swpaul ypresp_key_val *v2_result; 85614262Swpaul 85714262Swpaul result.yp_resptype = YPRESP_KEY_VAL; 85814304Swpaul result.ypresponse_u.yp_resp_key_valtype.val.valdat_val = 85914304Swpaul result.ypresponse_u.yp_resp_key_valtype.key.keydat_val = ""; 86014304Swpaul result.ypresponse_u.yp_resp_key_valtype.val.valdat_len = 86114304Swpaul result.ypresponse_u.yp_resp_key_valtype.key.keydat_len = 0; 86214262Swpaul 86314262Swpaul if (argp->yp_reqtype != YPREQ_KEY) { 86414262Swpaul result.ypresponse_u.yp_resp_key_valtype.stat = YP_BADARGS; 86514262Swpaul return(&result); 86614262Swpaul } 86714262Swpaul 86814262Swpaul v2_result = ypproc_next_2_svc(&argp->yprequest_u.yp_req_keytype,rqstp); 86914262Swpaul if (v2_result == NULL) 87014262Swpaul return(NULL); 87114262Swpaul 87214262Swpaul bcopy((char *)v2_result, 87314262Swpaul (char *)&result.ypresponse_u.yp_resp_key_valtype, 87414262Swpaul sizeof(ypresp_key_val)); 87514262Swpaul 87614262Swpaul return (&result); 87714262Swpaul} 87814262Swpaul 87914304Swpaul/* 88014304Swpaul * the 'poll' procedure sends a response of type YPRESP_MAP_PARMS 88114304Swpaul */ 88214262Swpaulypresponse * 88314262Swpaulypoldproc_poll_1_svc(yprequest *argp, struct svc_req *rqstp) 88414262Swpaul{ 88514262Swpaul static ypresponse result; 88614262Swpaul ypresp_master *v2_result1; 88714262Swpaul ypresp_order *v2_result2; 88814262Swpaul 88914262Swpaul result.yp_resptype = YPRESP_MAP_PARMS; 89014262Swpaul result.ypresponse_u.yp_resp_map_parmstype.domain = 89114262Swpaul argp->yprequest_u.yp_req_nokeytype.domain; 89214262Swpaul result.ypresponse_u.yp_resp_map_parmstype.map = 89314262Swpaul argp->yprequest_u.yp_req_nokeytype.map; 89414262Swpaul /* 89514262Swpaul * Hmm... there is no 'status' value in the 89614262Swpaul * yp_resp_map_parmstype structure, so I have to 89714262Swpaul * guess at what to do to indicate a failure. 89814262Swpaul * I hope this is right. 89914262Swpaul */ 90014262Swpaul result.ypresponse_u.yp_resp_map_parmstype.ordernum = 0; 90114262Swpaul result.ypresponse_u.yp_resp_map_parmstype.peer = ""; 90214262Swpaul 90314262Swpaul if (argp->yp_reqtype != YPREQ_MAP_PARMS) { 90414262Swpaul return(&result); 90514262Swpaul } 90614262Swpaul 90714262Swpaul v2_result1 = ypproc_master_2_svc(&argp->yprequest_u.yp_req_nokeytype, 90814262Swpaul rqstp); 90914262Swpaul if (v2_result1 == NULL) 91014262Swpaul return(NULL); 91114262Swpaul 91214262Swpaul if (v2_result1->stat != YP_TRUE) { 91314262Swpaul return(&result); 91414262Swpaul } 91514262Swpaul 91614262Swpaul v2_result2 = ypproc_order_2_svc(&argp->yprequest_u.yp_req_nokeytype, 91714262Swpaul rqstp); 91814262Swpaul if (v2_result2 == NULL) 91914262Swpaul return(NULL); 92014262Swpaul 92114262Swpaul if (v2_result2->stat != YP_TRUE) { 92214262Swpaul return(&result); 92314262Swpaul } 92414262Swpaul 92514262Swpaul result.ypresponse_u.yp_resp_map_parmstype.peer = 92614262Swpaul v2_result1->peer; 92714262Swpaul result.ypresponse_u.yp_resp_map_parmstype.ordernum = 92814262Swpaul v2_result2->ordernum; 92914262Swpaul 93014262Swpaul return (&result); 93114262Swpaul} 93214262Swpaul 93314262Swpaulypresponse * 93414262Swpaulypoldproc_push_1_svc(yprequest *argp, struct svc_req *rqstp) 93514262Swpaul{ 93614262Swpaul static ypresponse result; 93714262Swpaul 93814262Swpaul /* 93914262Swpaul * Not implemented. 94014262Swpaul */ 94114262Swpaul 94214262Swpaul return (&result); 94314262Swpaul} 94414262Swpaul 94514262Swpaulypresponse * 94614262Swpaulypoldproc_pull_1_svc(yprequest *argp, struct svc_req *rqstp) 94714262Swpaul{ 94814262Swpaul static ypresponse result; 94914262Swpaul 95014262Swpaul /* 95114262Swpaul * Not implemented. 95214262Swpaul */ 95314262Swpaul 95414262Swpaul return (&result); 95514262Swpaul} 95614262Swpaul 95714262Swpaulypresponse * 95814262Swpaulypoldproc_get_1_svc(yprequest *argp, struct svc_req *rqstp) 95914262Swpaul{ 96014262Swpaul static ypresponse result; 96114262Swpaul 96214262Swpaul /* 96314262Swpaul * Not implemented. 96414262Swpaul */ 96514262Swpaul 96614262Swpaul return (&result); 96714262Swpaul} 968