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Annotation of src/usr.bin/ssh/dispatch.c, Revision 1.4

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"
1.4     ! deraadt    25: RCSID("$OpenBSD: dispatch.c,v 1.3 2000/06/20 01:39:41 markus Exp $");
1.1       markus     26: #include "ssh.h"
                     27: #include "dispatch.h"
                     28: #include "packet.h"
                     29:
                     30: #define DISPATCH_MIN   0
                     31: #define DISPATCH_MAX   255
                     32:
                     33: dispatch_fn *dispatch[DISPATCH_MAX];
                     34:
                     35: void
                     36: dispatch_protocol_error(int type, int plen)
                     37: {
                     38:        error("Hm, dispatch protocol error: type %d plen %d", type, plen);
                     39: }
1.2       markus     40: void
1.1       markus     41: dispatch_init(dispatch_fn *dflt)
                     42: {
                     43:        int i;
                     44:        for (i = 0; i < DISPATCH_MAX; i++)
                     45:                dispatch[i] = dflt;
                     46: }
                     47: void
                     48: dispatch_set(int type, dispatch_fn *fn)
                     49: {
                     50:        dispatch[type] = fn;
                     51: }
                     52: void
                     53: dispatch_run(int mode, int *done)
                     54: {
                     55:        for (;;) {
                     56:                int plen;
                     57:                int type;
                     58:
                     59:                if (mode == DISPATCH_BLOCK) {
                     60:                        type = packet_read(&plen);
                     61:                } else {
                     62:                        type = packet_read_poll(&plen);
                     63:                        if (type == SSH_MSG_NONE)
                     64:                                return;
                     65:                }
                     66:                if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
                     67:                        (*dispatch[type])(type, plen);
                     68:                else
                     69:                        packet_disconnect("protocol error: rcvd type %d", type);
                     70:                if (done != NULL && *done)
                     71:                        return;
                     72:        }
                     73: }