148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/*
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* Copyright (c) 1995, 1996
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ypxfrd_server.c,v 1.5 1997/04/10 13:48:59 wpaul Exp $
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*/
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#include "ypxfrd.h"
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#ifndef lint
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static const char rcsid[] = "$Id: ypxfrd_server.c,v 1.5 1997/04/10 13:48:59 wpaul Exp $";
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#endif /* not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/uio.h>
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#include <sys/fcntl.h>
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#include <machine/endian.h>
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#include "ypxfrd_extern.h"
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int forked = 0;
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int children = 0;
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int fp = 0;
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static bool_t
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xdr_my_xfr(register XDR *xdrs, xfr *objp)
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{
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unsigned char buf[XFRBLOCKSIZE];
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while(1) {
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if ((objp->xfr_u.xfrblock_buf.xfrblock_buf_len =
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read(fp, &buf, XFRBLOCKSIZE)) != -1) {
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objp->ok = TRUE;
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objp->xfr_u.xfrblock_buf.xfrblock_buf_val = (char *)&buf;
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} else {
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objp->ok = FALSE;
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objp->xfr_u.xfrstat = XFR_READ_ERR;
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yp_error("read error: %s", strerror(errno));
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}
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/* Serialize */
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if (!xdr_xfr(xdrs, objp))
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return(FALSE);
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if (objp->ok == FALSE)
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return(TRUE);
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if (objp->xfr_u.xfrblock_buf.xfrblock_buf_len < XFRBLOCKSIZE) {
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objp->ok = FALSE;
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objp->xfr_u.xfrstat = XFR_DONE;
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if (!xdr_xfr(xdrs, objp))
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return(FALSE);
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return(TRUE);
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}
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}
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}
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struct xfr *
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ypxfrd_getmap_1_svc(ypxfr_mapname *argp, struct svc_req *rqstp)
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{
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static struct xfr result;
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char buf[MAXPATHLEN];
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result.ok = FALSE;
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result.xfr_u.xfrstat = XFR_DENIED;
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if (yp_validdomain(argp->xfrdomain)) {
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return(&result);
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}
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if (yp_access(argp->xfrmap, (struct svc_req *)rqstp)) {
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return(&result);
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}
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snprintf (buf, sizeof(buf), "%s/%s/%s", yp_dir, argp->xfrdomain,
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argp->xfrmap);
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if (access((char *)&buf, R_OK) == -1) {
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result.xfr_u.xfrstat = XFR_ACCESS;
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return(&result);
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}
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if (argp->xfr_db_type != XFR_DB_BSD_HASH &&
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argp->xfr_db_type != XFR_DB_ANY) {
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result.xfr_u.xfrstat = XFR_DB_TYPE_MISMATCH;
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return(&result);
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}
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#if BYTE_ORDER == LITTLE_ENDIAN
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if (argp->xfr_byte_order == XFR_ENDIAN_BIG) {
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#else
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if (argp->xfr_byte_order == XFR_ENDIAN_LITTLE) {
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#endif
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result.xfr_u.xfrstat = XFR_DB_ENDIAN_MISMATCH;
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return(&result);
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}
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#ifndef DEBUG
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if (children < MAX_CHILDREN && fork()) {
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children++;
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forked = 0;
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return (NULL);
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} else {
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forked++;
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}
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#endif
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if ((fp = open((char *)&buf, O_RDONLY)) == -1) {
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result.xfr_u.xfrstat = XFR_READ_ERR;
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return(&result);
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}
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/* Start sending the file. */
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svc_sendreply(rqstp->rq_xprt, xdr_my_xfr, (char *)&result);
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close(fp);
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return (NULL);
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}
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