mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-13 10:02:38 +00:00
105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/* $OpenBSD: dispatch.c,v 1.22 2008/10/31 15:05:34 stevesk Exp $ */
|
|
/*
|
|
* Copyright (c) 2000 Markus Friedl. 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 "includes.h"
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <signal.h>
|
|
#include <stdarg.h>
|
|
|
|
#include "ssh1.h"
|
|
#include "ssh2.h"
|
|
#include "log.h"
|
|
#include "dispatch.h"
|
|
#include "packet.h"
|
|
#include "compat.h"
|
|
|
|
#define DISPATCH_MAX 255
|
|
|
|
dispatch_fn *dispatch[DISPATCH_MAX];
|
|
|
|
void
|
|
dispatch_protocol_error(int type, u_int32_t seq, void *ctxt)
|
|
{
|
|
logit("dispatch_protocol_error: type %d seq %u", type, seq);
|
|
if (!compat20)
|
|
fatal("protocol error");
|
|
packet_start(SSH2_MSG_UNIMPLEMENTED);
|
|
packet_put_int(seq);
|
|
packet_send();
|
|
packet_write_wait();
|
|
}
|
|
void
|
|
dispatch_protocol_ignore(int type, u_int32_t seq, void *ctxt)
|
|
{
|
|
logit("dispatch_protocol_ignore: type %d seq %u", type, seq);
|
|
}
|
|
void
|
|
dispatch_init(dispatch_fn *dflt)
|
|
{
|
|
u_int i;
|
|
for (i = 0; i < DISPATCH_MAX; i++)
|
|
dispatch[i] = dflt;
|
|
}
|
|
void
|
|
dispatch_range(u_int from, u_int to, dispatch_fn *fn)
|
|
{
|
|
u_int i;
|
|
|
|
for (i = from; i <= to; i++) {
|
|
if (i >= DISPATCH_MAX)
|
|
break;
|
|
dispatch[i] = fn;
|
|
}
|
|
}
|
|
void
|
|
dispatch_set(int type, dispatch_fn *fn)
|
|
{
|
|
dispatch[type] = fn;
|
|
}
|
|
void
|
|
dispatch_run(int mode, volatile sig_atomic_t *done, void *ctxt)
|
|
{
|
|
for (;;) {
|
|
int type;
|
|
u_int32_t seqnr;
|
|
|
|
if (mode == DISPATCH_BLOCK) {
|
|
type = packet_read_seqnr(&seqnr);
|
|
} else {
|
|
type = packet_read_poll_seqnr(&seqnr);
|
|
if (type == SSH_MSG_NONE)
|
|
return;
|
|
}
|
|
if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
|
|
(*dispatch[type])(type, seqnr, ctxt);
|
|
else
|
|
packet_disconnect("protocol error: rcvd type %d", type);
|
|
if (done != NULL && *done)
|
|
return;
|
|
}
|
|
}
|