1 /* $OpenBSD: dispatch.c,v 1.21 2006/08/03 03:34:42 deraadt Exp $ */
3 * Copyright (c) 2000 Markus Friedl. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
28 #include <sys/types.h>
40 #define DISPATCH_MIN 0
41 #define DISPATCH_MAX 255
43 dispatch_fn *dispatch[DISPATCH_MAX];
46 dispatch_protocol_error(int type, u_int32_t seq, void *ctxt)
48 logit("dispatch_protocol_error: type %d seq %u", type, seq);
50 fatal("protocol error");
51 packet_start(SSH2_MSG_UNIMPLEMENTED);
57 dispatch_protocol_ignore(int type, u_int32_t seq, void *ctxt)
59 logit("dispatch_protocol_ignore: type %d seq %u", type, seq);
62 dispatch_init(dispatch_fn *dflt)
65 for (i = 0; i < DISPATCH_MAX; i++)
69 dispatch_range(u_int from, u_int to, dispatch_fn *fn)
73 for (i = from; i <= to; i++) {
74 if (i >= DISPATCH_MAX)
80 dispatch_set(int type, dispatch_fn *fn)
85 dispatch_run(int mode, volatile sig_atomic_t *done, void *ctxt)
91 if (mode == DISPATCH_BLOCK) {
92 type = packet_read_seqnr(&seqnr);
94 type = packet_read_poll_seqnr(&seqnr);
95 if (type == SSH_MSG_NONE)
98 if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
99 (*dispatch[type])(type, seqnr, ctxt);
101 packet_disconnect("protocol error: rcvd type %d", type);
102 if (done != NULL && *done)