Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 1 | /* |
| 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 Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 12 | * |
| 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 Lindstrom | ef1cf5d | 2001-01-29 07:55:07 +0000 | [diff] [blame] | 25 | RCSID("$OpenBSD: dispatch.c,v 1.8 2001/01/28 10:15:34 markus Exp $"); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 26 | |
| 27 | #include "ssh1.h" |
Ben Lindstrom | ef1cf5d | 2001-01-29 07:55:07 +0000 | [diff] [blame] | 28 | #include "ssh2.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 29 | #include "log.h" |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 30 | #include "dispatch.h" |
| 31 | #include "packet.h" |
Ben Lindstrom | ef1cf5d | 2001-01-29 07:55:07 +0000 | [diff] [blame] | 32 | #include "compat.h" |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 33 | |
| 34 | #define DISPATCH_MIN 0 |
| 35 | #define DISPATCH_MAX 255 |
| 36 | |
| 37 | dispatch_fn *dispatch[DISPATCH_MAX]; |
| 38 | |
| 39 | void |
Damien Miller | 62cee00 | 2000-09-23 17:15:56 +1100 | [diff] [blame] | 40 | dispatch_protocol_error(int type, int plen, void *ctxt) |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 41 | { |
| 42 | error("Hm, dispatch protocol error: type %d plen %d", type, plen); |
Ben Lindstrom | ef1cf5d | 2001-01-29 07:55:07 +0000 | [diff] [blame] | 43 | if (compat20 && type == SSH2_MSG_KEXDH_INIT) |
| 44 | fatal("dispatch_protocol_error: rekeying is not supported"); |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 45 | } |
| 46 | void |
| 47 | dispatch_init(dispatch_fn *dflt) |
| 48 | { |
| 49 | int i; |
| 50 | for (i = 0; i < DISPATCH_MAX; i++) |
| 51 | dispatch[i] = dflt; |
| 52 | } |
| 53 | void |
| 54 | dispatch_set(int type, dispatch_fn *fn) |
| 55 | { |
| 56 | dispatch[type] = fn; |
| 57 | } |
| 58 | void |
Damien Miller | 62cee00 | 2000-09-23 17:15:56 +1100 | [diff] [blame] | 59 | dispatch_run(int mode, int *done, void *ctxt) |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 60 | { |
| 61 | for (;;) { |
| 62 | int plen; |
| 63 | int type; |
| 64 | |
| 65 | if (mode == DISPATCH_BLOCK) { |
| 66 | type = packet_read(&plen); |
| 67 | } else { |
| 68 | type = packet_read_poll(&plen); |
| 69 | if (type == SSH_MSG_NONE) |
| 70 | return; |
| 71 | } |
| 72 | if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL) |
Damien Miller | 62cee00 | 2000-09-23 17:15:56 +1100 | [diff] [blame] | 73 | (*dispatch[type])(type, plen, ctxt); |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 74 | else |
| 75 | packet_disconnect("protocol error: rcvd type %d", type); |
| 76 | if (done != NULL && *done) |
| 77 | return; |
| 78 | } |
| 79 | } |