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bbe275e95b
two places i found where it was appropriate to _use_ that third argument,
in locking.c and brlock.c! there was a static traverse_function and
i removed the static variable, typecast it to a void*, passed it to
tdb_traverse and re-cast it back to the traverse_function inside the
tdb_traverse function. this makes the use of tdb_traverse() reentrant,
which is never going to happen, i know, i just don't like to see
statics lying about when there's no need for them.
as i had to do in samba-tng, all uses of tdb_traverse modified to take
the new void* state argument.
2) disabled rpcclient: referring people to use SAMBA_TNG rpcclient.
i don't know how the other samba team members would react if i deleted
rpcclient from cvs main. damn, that code's so old, it's unreal.
20 rpcclient commands, instead of about 70 in SAMBA_TNG.
(This used to be commit 49d7f0afbc)
168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/*
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Unix SMB/Netbios implementation.
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Version 3.0
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handle unexpected packets
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Copyright (C) Andrew Tridgell 2000
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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extern int DEBUGLEVEL;
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static TDB_CONTEXT *tdbd = NULL;
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/* the key type used in the unexpeceted packet database */
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struct unexpected_key {
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enum packet_type packet_type;
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time_t timestamp;
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int count;
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};
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/****************************************************************************
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all unexpected packets are passed in here, to be stored in a unexpected
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packet database. This allows nmblookup and other tools to receive packets
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erroneoously sent to the wrong port by broken MS systems
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**************************************************************************/
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void unexpected_packet(struct packet_struct *p)
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{
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static int count;
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TDB_DATA kbuf, dbuf;
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struct unexpected_key key;
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char buf[1024];
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int len=0;
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if (!tdbd) {
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tdbd = tdb_open(lock_path("unexpected.tdb"), 1,
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TDB_CLEAR_IF_FIRST,
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O_RDWR | O_CREAT, 0644);
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if (!tdbd) {
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DEBUG(0,("Failed to open unexpected.tdb\n"));
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return;
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}
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}
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memset(buf,'\0',sizeof(buf));
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len = build_packet(buf, p);
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key.packet_type = p->packet_type;
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key.timestamp = p->timestamp;
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key.count = count++;
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kbuf.dptr = (char *)&key;
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kbuf.dsize = sizeof(key);
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dbuf.dptr = buf;
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dbuf.dsize = len;
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tdb_store(tdbd, kbuf, dbuf, TDB_REPLACE);
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}
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static time_t lastt;
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/****************************************************************************
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delete the record if it is too old
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**************************************************************************/
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static int traverse_fn(TDB_CONTEXT *ttdb, TDB_DATA kbuf, TDB_DATA dbuf, void *state)
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{
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struct unexpected_key key;
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memcpy(&key, kbuf.dptr, sizeof(key));
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if (lastt - key.timestamp > NMBD_UNEXPECTED_TIMEOUT) {
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tdb_delete(ttdb, kbuf);
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}
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return 0;
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}
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/****************************************************************************
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delete all old unexpected packets
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**************************************************************************/
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void clear_unexpected(time_t t)
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{
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if (!tdbd) return;
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if ((lastt != 0) && (t < lastt + NMBD_UNEXPECTED_TIMEOUT))
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return;
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lastt = t;
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tdb_traverse(tdbd, traverse_fn, NULL);
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}
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static struct packet_struct *matched_packet;
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static int match_id;
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static enum packet_type match_type;
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static char *match_name;
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/****************************************************************************
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tdb traversal fn to find a matching 137 packet
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**************************************************************************/
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static int traverse_match(TDB_CONTEXT *ttdb, TDB_DATA kbuf, TDB_DATA dbuf, void *state)
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{
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struct unexpected_key key;
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struct packet_struct *p;
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memcpy(&key, kbuf.dptr, sizeof(key));
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if (key.packet_type != match_type) return 0;
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p = parse_packet(dbuf.dptr, dbuf.dsize, match_type);
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if ((match_type == NMB_PACKET &&
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p->packet.nmb.header.name_trn_id == match_id) ||
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(match_type == DGRAM_PACKET &&
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match_mailslot_name(p, match_name))) {
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matched_packet = p;
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return -1;
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}
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free_packet(p);
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return 0;
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}
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/****************************************************************************
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check for a particular packet in the unexpected packet queue
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**************************************************************************/
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struct packet_struct *receive_unexpected(enum packet_type packet_type, int id,
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char *mailslot_name)
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{
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TDB_CONTEXT *tdb2;
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tdb2 = tdb_open(lock_path("unexpected.tdb"), 0, 0, O_RDONLY, 0);
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if (!tdb2) return NULL;
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matched_packet = NULL;
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match_id = id;
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match_type = packet_type;
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match_name = mailslot_name;
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tdb_traverse(tdb2, traverse_match, NULL);
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tdb_close(tdb2);
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return matched_packet;
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}
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