blob: 3f96c726bc736eda48e89d8976474083154f4357 [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"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000025
26#include "ssh1.h"
Ben Lindstromef1cf5d2001-01-29 07:55:07 +000027#include "ssh2.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000028#include "log.h"
Damien Miller4af51302000-04-16 11:18:38 +100029#include "dispatch.h"
30#include "packet.h"
Ben Lindstromef1cf5d2001-01-29 07:55:07 +000031#include "compat.h"
Damien Miller4af51302000-04-16 11:18:38 +100032
33#define DISPATCH_MIN 0
34#define DISPATCH_MAX 255
35
36dispatch_fn *dispatch[DISPATCH_MAX];
37
38void
Damien Miller630d6f42002-01-22 23:17:30 +110039dispatch_protocol_error(int type, u_int32_t seq, void *ctxt)
Damien Miller4af51302000-04-16 11:18:38 +100040{
Damien Miller996acd22003-04-09 20:59:48 +100041 logit("dispatch_protocol_error: type %d seq %u", type, seq);
Damien Miller7d053392002-01-22 23:24:13 +110042 if (!compat20)
43 fatal("protocol error");
44 packet_start(SSH2_MSG_UNIMPLEMENTED);
45 packet_put_int(seq);
46 packet_send();
47 packet_write_wait();
48}
49void
50dispatch_protocol_ignore(int type, u_int32_t seq, void *ctxt)
51{
Damien Miller996acd22003-04-09 20:59:48 +100052 logit("dispatch_protocol_ignore: type %d seq %u", type, seq);
Damien Miller4af51302000-04-16 11:18:38 +100053}
54void
55dispatch_init(dispatch_fn *dflt)
56{
Damien Miller7d053392002-01-22 23:24:13 +110057 u_int i;
Damien Miller4af51302000-04-16 11:18:38 +100058 for (i = 0; i < DISPATCH_MAX; i++)
59 dispatch[i] = dflt;
60}
61void
Damien Miller7d053392002-01-22 23:24:13 +110062dispatch_range(u_int from, u_int to, dispatch_fn *fn)
63{
64 u_int i;
65
66 for (i = from; i <= to; i++) {
67 if (i >= DISPATCH_MAX)
68 break;
69 dispatch[i] = fn;
70 }
71}
72void
Damien Miller4af51302000-04-16 11:18:38 +100073dispatch_set(int type, dispatch_fn *fn)
74{
75 dispatch[type] = fn;
76}
77void
Damien Miller62cee002000-09-23 17:15:56 +110078dispatch_run(int mode, int *done, void *ctxt)
Damien Miller4af51302000-04-16 11:18:38 +100079{
80 for (;;) {
Damien Miller4af51302000-04-16 11:18:38 +100081 int type;
Damien Miller278f9072001-12-21 15:00:19 +110082 u_int32_t seqnr;
Damien Miller4af51302000-04-16 11:18:38 +100083
84 if (mode == DISPATCH_BLOCK) {
Damien Millerdff50992002-01-22 23:16:32 +110085 type = packet_read_seqnr(&seqnr);
Damien Miller4af51302000-04-16 11:18:38 +100086 } else {
Damien Millerdff50992002-01-22 23:16:32 +110087 type = packet_read_poll_seqnr(&seqnr);
Damien Miller4af51302000-04-16 11:18:38 +100088 if (type == SSH_MSG_NONE)
89 return;
90 }
91 if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
Damien Miller630d6f42002-01-22 23:17:30 +110092 (*dispatch[type])(type, seqnr, ctxt);
Damien Miller4af51302000-04-16 11:18:38 +100093 else
Kevin Stevesef4eea92001-02-05 12:42:17 +000094 packet_disconnect("protocol error: rcvd type %d", type);
Damien Miller4af51302000-04-16 11:18:38 +100095 if (done != NULL && *done)
96 return;
97 }
98}