]>
Commit | Line | Data |
---|---|---|
519fc2b7 | 1 | /* $OpenBSD: dispatch.c,v 1.20 2006/07/23 01:11:05 stevesk Exp $ */ |
6ae2364d | 2 | /* |
3 | * Copyright (c) 2000 Markus Friedl. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
6ae2364d | 13 | * |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
17 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
24 | */ | |
25 | #include "includes.h" | |
42f11eb2 | 26 | |
519fc2b7 | 27 | #include <signal.h> |
28 | ||
42f11eb2 | 29 | #include "ssh1.h" |
014beb5b | 30 | #include "ssh2.h" |
42f11eb2 | 31 | #include "log.h" |
6ae2364d | 32 | #include "dispatch.h" |
33 | #include "packet.h" | |
014beb5b | 34 | #include "compat.h" |
6ae2364d | 35 | |
36 | #define DISPATCH_MIN 0 | |
37 | #define DISPATCH_MAX 255 | |
38 | ||
39 | dispatch_fn *dispatch[DISPATCH_MAX]; | |
40 | ||
41 | void | |
7819b5c3 | 42 | dispatch_protocol_error(int type, u_int32_t seq, void *ctxt) |
6ae2364d | 43 | { |
bbe88b6d | 44 | logit("dispatch_protocol_error: type %d seq %u", type, seq); |
6367063f | 45 | if (!compat20) |
46 | fatal("protocol error"); | |
47 | packet_start(SSH2_MSG_UNIMPLEMENTED); | |
48 | packet_put_int(seq); | |
49 | packet_send(); | |
50 | packet_write_wait(); | |
51 | } | |
52 | void | |
53 | dispatch_protocol_ignore(int type, u_int32_t seq, void *ctxt) | |
54 | { | |
bbe88b6d | 55 | logit("dispatch_protocol_ignore: type %d seq %u", type, seq); |
6ae2364d | 56 | } |
57 | void | |
58 | dispatch_init(dispatch_fn *dflt) | |
59 | { | |
6367063f | 60 | u_int i; |
6ae2364d | 61 | for (i = 0; i < DISPATCH_MAX; i++) |
62 | dispatch[i] = dflt; | |
63 | } | |
64 | void | |
6367063f | 65 | dispatch_range(u_int from, u_int to, dispatch_fn *fn) |
66 | { | |
67 | u_int i; | |
68 | ||
69 | for (i = from; i <= to; i++) { | |
70 | if (i >= DISPATCH_MAX) | |
71 | break; | |
72 | dispatch[i] = fn; | |
73 | } | |
74 | } | |
75 | void | |
6ae2364d | 76 | dispatch_set(int type, dispatch_fn *fn) |
77 | { | |
78 | dispatch[type] = fn; | |
79 | } | |
80 | void | |
50394f26 | 81 | dispatch_run(int mode, volatile sig_atomic_t *done, void *ctxt) |
6ae2364d | 82 | { |
83 | for (;;) { | |
6ae2364d | 84 | int type; |
24ca6821 | 85 | u_int32_t seqnr; |
6ae2364d | 86 | |
87 | if (mode == DISPATCH_BLOCK) { | |
54a5250f | 88 | type = packet_read_seqnr(&seqnr); |
6ae2364d | 89 | } else { |
54a5250f | 90 | type = packet_read_poll_seqnr(&seqnr); |
6ae2364d | 91 | if (type == SSH_MSG_NONE) |
92 | return; | |
93 | } | |
94 | if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL) | |
7819b5c3 | 95 | (*dispatch[type])(type, seqnr, ctxt); |
6ae2364d | 96 | else |
2b87da3b | 97 | packet_disconnect("protocol error: rcvd type %d", type); |
6ae2364d | 98 | if (done != NULL && *done) |
99 | return; | |
100 | } | |
101 | } |