blob: db8951c1b5e8fb4ffa58b4779123559367fe9aba [file] [log] [blame]
Damien Miller4af51302000-04-16 11:18:38 +10001/*
2 * Copyright (c) 2000 Markus Friedl. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
Damien Miller4af51302000-04-16 11:18:38 +100012 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24#include "includes.h"
Damien Miller62cee002000-09-23 17:15:56 +110025RCSID("$OpenBSD: dispatch.c,v 1.5 2000/09/21 11:25:34 markus Exp $");
Damien Miller4af51302000-04-16 11:18:38 +100026#include "ssh.h"
27#include "dispatch.h"
28#include "packet.h"
29
30#define DISPATCH_MIN 0
31#define DISPATCH_MAX 255
32
33dispatch_fn *dispatch[DISPATCH_MAX];
34
35void
Damien Miller62cee002000-09-23 17:15:56 +110036dispatch_protocol_error(int type, int plen, void *ctxt)
Damien Miller4af51302000-04-16 11:18:38 +100037{
38 error("Hm, dispatch protocol error: type %d plen %d", type, plen);
39}
40void
41dispatch_init(dispatch_fn *dflt)
42{
43 int i;
44 for (i = 0; i < DISPATCH_MAX; i++)
45 dispatch[i] = dflt;
46}
47void
48dispatch_set(int type, dispatch_fn *fn)
49{
50 dispatch[type] = fn;
51}
52void
Damien Miller62cee002000-09-23 17:15:56 +110053dispatch_run(int mode, int *done, void *ctxt)
Damien Miller4af51302000-04-16 11:18:38 +100054{
55 for (;;) {
56 int plen;
57 int type;
58
59 if (mode == DISPATCH_BLOCK) {
60 type = packet_read(&plen);
61 } else {
62 type = packet_read_poll(&plen);
63 if (type == SSH_MSG_NONE)
64 return;
65 }
66 if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
Damien Miller62cee002000-09-23 17:15:56 +110067 (*dispatch[type])(type, plen, ctxt);
Damien Miller4af51302000-04-16 11:18:38 +100068 else
69 packet_disconnect("protocol error: rcvd type %d", type);
70 if (done != NULL && *done)
71 return;
72 }
73}