Annotation of src/usr.bin/ssh/dispatch.c, Revision 1.10
1.1 markus 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.
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"
1.10 ! markus 25: RCSID("$OpenBSD: dispatch.c,v 1.9 2001/02/04 15:32:23 stevesk Exp $");
1.7 markus 26:
1.6 markus 27: #include "ssh1.h"
1.8 markus 28: #include "ssh2.h"
1.7 markus 29: #include "log.h"
1.1 markus 30: #include "dispatch.h"
31: #include "packet.h"
1.8 markus 32: #include "compat.h"
1.1 markus 33:
34: #define DISPATCH_MIN 0
35: #define DISPATCH_MAX 255
36:
37: dispatch_fn *dispatch[DISPATCH_MAX];
38:
39: void
1.5 markus 40: dispatch_protocol_error(int type, int plen, void *ctxt)
1.1 markus 41: {
42: error("Hm, dispatch protocol error: type %d plen %d", type, plen);
1.10 ! markus 43: if (compat20 && type == SSH2_MSG_KEXINIT)
1.8 markus 44: fatal("dispatch_protocol_error: rekeying is not supported");
1.1 markus 45: }
1.2 markus 46: void
1.1 markus 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
1.5 markus 59: dispatch_run(int mode, int *done, void *ctxt)
1.1 markus 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)
1.5 markus 73: (*dispatch[type])(type, plen, ctxt);
1.1 markus 74: else
1.9 stevesk 75: packet_disconnect("protocol error: rcvd type %d", type);
1.1 markus 76: if (done != NULL && *done)
77: return;
78: }
79: }