07ce40632e
from usr.sbin/mopd/common/pf.c, where only the ad clause is removed, because it has a shared UCB copyright) on Mats O Jansson's files. thorpej OK'd usr.sbin/rpc.yppasswdd/yppasswdd_mkpw.c, where he shares copyright.
170 lines
4.2 KiB
C
170 lines
4.2 KiB
C
/* $NetBSD: loop-bsd.c,v 1.10 2009/10/20 00:51:13 snj Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1993-95 Mats O Jansson. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: loop-bsd.c,v 1.10 2009/10/20 00:51:13 snj Exp $");
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <strings.h>
|
|
#include <unistd.h>
|
|
#if defined(__bsdi__) || defined(__FreeBSD__) || defined(__NetBSD__)
|
|
#include <sys/time.h>
|
|
#endif
|
|
#include <net/bpf.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/poll.h>
|
|
#include <assert.h>
|
|
|
|
#include "os.h"
|
|
#include "common.h"
|
|
#include "device.h"
|
|
#include "mopdef.h"
|
|
#include "log.h"
|
|
|
|
int
|
|
mopOpenRC(p, trans)
|
|
struct if_info *p;
|
|
int trans;
|
|
{
|
|
#ifndef NORC
|
|
return (*(p->iopen))(p->if_name,
|
|
O_RDWR,
|
|
MOP_K_PROTO_RC,
|
|
trans);
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
int
|
|
mopOpenDL(p, trans)
|
|
struct if_info *p;
|
|
int trans;
|
|
{
|
|
#ifndef NODL
|
|
return (*(p->iopen))(p->if_name,
|
|
O_RDWR,
|
|
MOP_K_PROTO_DL,
|
|
trans);
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
mopReadRC()
|
|
{
|
|
}
|
|
|
|
void
|
|
mopReadDL()
|
|
{
|
|
}
|
|
|
|
/*
|
|
* The list of all interfaces that are being listened to. loop()
|
|
* "polls" on the descriptors in this list.
|
|
*/
|
|
struct if_info *iflist;
|
|
|
|
void mopProcess __P((struct if_info *, u_char *));
|
|
|
|
/*
|
|
* Loop indefinitely listening for MOP requests on the
|
|
* interfaces in 'iflist'.
|
|
*/
|
|
void
|
|
Loop()
|
|
{
|
|
u_char *buf, *bp, *ep;
|
|
int cc, n, m;
|
|
struct pollfd *set;
|
|
int bufsize;
|
|
struct if_info *ii;
|
|
|
|
if (iflist == 0)
|
|
mopLogErrX("no interfaces");
|
|
if (iflist->fd != -1) {
|
|
if (ioctl(iflist->fd, BIOCGBLEN, (caddr_t) & bufsize) < 0)
|
|
mopLogErr("BIOCGBLEN");
|
|
} else
|
|
mopLogErrX("cannot get buffer size");
|
|
buf = (u_char *) malloc((unsigned) bufsize);
|
|
if (buf == 0)
|
|
mopLogErr("malloc");
|
|
/*
|
|
* Find the highest numbered file descriptor for poll().
|
|
* Initialize the set of descriptors to listen to.
|
|
*/
|
|
for (ii = iflist, n = 0; ii; ii = ii->next, n++)
|
|
;
|
|
set = malloc(n * sizeof(*set));
|
|
for (ii = iflist, m = 0; ii; ii = ii->next, m++) {
|
|
assert(ii->fd != -1);
|
|
set[m].fd = ii->fd;
|
|
set[m].events = POLLIN;
|
|
}
|
|
for (;;) {
|
|
if (poll(set, n, INFTIM) < 0)
|
|
mopLogErr("poll");
|
|
for (ii = iflist, m = 0; ii; ii = ii->next, m++) {
|
|
if (!(set[m].revents & POLLIN))
|
|
continue;
|
|
again:
|
|
cc = read(ii->fd, (char *) buf, bufsize);
|
|
/* Don't choke when we get ptraced */
|
|
if (cc < 0 && errno == EINTR)
|
|
goto again;
|
|
/* Due to a SunOS bug, after 2^31 bytes, the file
|
|
* offset overflows and read fails with EINVAL. The
|
|
* lseek() to 0 will fix things. */
|
|
if (cc < 0) {
|
|
if (errno == EINVAL &&
|
|
(lseek(ii->fd, 0, SEEK_CUR) + bufsize) < 0) {
|
|
(void) lseek(ii->fd, 0, 0);
|
|
goto again;
|
|
}
|
|
mopLogErr("read");
|
|
}
|
|
/* Loop through the packet(s) */
|
|
#define bhp ((struct bpf_hdr *)bp)
|
|
bp = buf;
|
|
ep = bp + cc;
|
|
while (bp < ep) {
|
|
int caplen, hdrlen;
|
|
|
|
caplen = bhp->bh_caplen;
|
|
hdrlen = bhp->bh_hdrlen;
|
|
mopProcess(ii, bp + hdrlen);
|
|
bp += BPF_WORDALIGN(hdrlen + caplen);
|
|
}
|
|
}
|
|
}
|
|
}
|