Return to dispatch.c CVS log

Up to [local] / src / usr.bin / ssh

Annotation of src/usr.bin/ssh/dispatch.c, Revision 1.16.10.1

1.16.10.1! brad        1: /* $OpenBSD: dispatch.c,v 1.21 2006/08/03 03:34:42 deraadt Exp $ */
1.1       markus      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.
                     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:  */
1.16.10.1! brad       25:
        !            26: #include <sys/types.h>
        !            27:
        !            28: #include <signal.h>
        !            29: #include <stdarg.h>
1.7       markus     30:
1.6       markus     31: #include "ssh1.h"
1.8       markus     32: #include "ssh2.h"
1.7       markus     33: #include "log.h"
1.1       markus     34: #include "dispatch.h"
                     35: #include "packet.h"
1.8       markus     36: #include "compat.h"
1.1       markus     37:
                     38: #define DISPATCH_MIN   0
                     39: #define DISPATCH_MAX   255
                     40:
                     41: dispatch_fn *dispatch[DISPATCH_MAX];
                     42:
                     43: void
1.14      markus     44: dispatch_protocol_error(int type, u_int32_t seq, void *ctxt)
1.1       markus     45: {
1.16      itojun     46:        logit("dispatch_protocol_error: type %d seq %u", type, seq);
1.15      markus     47:        if (!compat20)
                     48:                fatal("protocol error");
                     49:        packet_start(SSH2_MSG_UNIMPLEMENTED);
                     50:        packet_put_int(seq);
                     51:        packet_send();
                     52:        packet_write_wait();
                     53: }
                     54: void
                     55: dispatch_protocol_ignore(int type, u_int32_t seq, void *ctxt)
                     56: {
1.16      itojun     57:        logit("dispatch_protocol_ignore: type %d seq %u", type, seq);
1.1       markus     58: }
1.2       markus     59: void
1.1       markus     60: dispatch_init(dispatch_fn *dflt)
                     61: {
1.15      markus     62:        u_int i;
1.1       markus     63:        for (i = 0; i < DISPATCH_MAX; i++)
                     64:                dispatch[i] = dflt;
1.15      markus     65: }
                     66: void
                     67: dispatch_range(u_int from, u_int to, dispatch_fn *fn)
                     68: {
                     69:        u_int i;
                     70:
                     71:        for (i = from; i <= to; i++) {
                     72:                if (i >= DISPATCH_MAX)
                     73:                        break;
                     74:                dispatch[i] = fn;
                     75:        }
1.1       markus     76: }
                     77: void
                     78: dispatch_set(int type, dispatch_fn *fn)
                     79: {
                     80:        dispatch[type] = fn;
                     81: }
                     82: void
1.16.10.1! brad       83: dispatch_run(int mode, volatile sig_atomic_t *done, void *ctxt)
1.1       markus     84: {
                     85:        for (;;) {
                     86:                int type;
1.12      djm        87:                u_int32_t seqnr;
1.1       markus     88:
                     89:                if (mode == DISPATCH_BLOCK) {
1.13      markus     90:                        type = packet_read_seqnr(&seqnr);
1.1       markus     91:                } else {
1.13      markus     92:                        type = packet_read_poll_seqnr(&seqnr);
1.1       markus     93:                        if (type == SSH_MSG_NONE)
                     94:                                return;
                     95:                }
                     96:                if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
1.14      markus     97:                        (*dispatch[type])(type, seqnr, ctxt);
1.1       markus     98:                else
1.9       stevesk    99:                        packet_disconnect("protocol error: rcvd type %d", type);
1.1       markus    100:                if (done != NULL && *done)
                    101:                        return;
                    102:        }
                    103: }