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Annotation of src/usr.bin/ssh/dispatch.c, Revision 1.3

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:  * 3. All advertising materials mentioning features or use of this software
                     13:  *    must display the following acknowledgement:
                     14:  *      This product includes software developed by Markus Friedl.
                     15:  * 4. The name of the author may not be used to endorse or promote products
                     16:  *    derived from this software without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     19:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     20:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     21:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     22:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     23:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     24:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     25:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     26:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     27:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     28:  */
                     29: #include "includes.h"
1.3     ! markus     30: RCSID("$OpenBSD: dispatch.c,v 1.2 2000/04/14 10:30:31 markus Exp $");
1.1       markus     31: #include "ssh.h"
                     32: #include "dispatch.h"
                     33: #include "packet.h"
                     34:
                     35: #define DISPATCH_MIN   0
                     36: #define DISPATCH_MAX   255
                     37:
                     38: dispatch_fn *dispatch[DISPATCH_MAX];
                     39:
                     40: void
                     41: dispatch_protocol_error(int type, int plen)
                     42: {
                     43:        error("Hm, dispatch protocol error: type %d plen %d", type, plen);
                     44: }
1.2       markus     45: void
1.1       markus     46: dispatch_init(dispatch_fn *dflt)
                     47: {
                     48:        int i;
                     49:        for (i = 0; i < DISPATCH_MAX; i++)
                     50:                dispatch[i] = dflt;
                     51: }
                     52: void
                     53: dispatch_set(int type, dispatch_fn *fn)
                     54: {
                     55:        dispatch[type] = fn;
                     56: }
                     57: void
                     58: dispatch_run(int mode, int *done)
                     59: {
                     60:        for (;;) {
                     61:                int plen;
                     62:                int type;
                     63:
                     64:                if (mode == DISPATCH_BLOCK) {
                     65:                        type = packet_read(&plen);
                     66:                } else {
                     67:                        type = packet_read_poll(&plen);
                     68:                        if (type == SSH_MSG_NONE)
                     69:                                return;
                     70:                }
                     71:                if (type > 0 && type < DISPATCH_MAX && dispatch[type] != NULL)
                     72:                        (*dispatch[type])(type, plen);
                     73:                else
                     74:                        packet_disconnect("protocol error: rcvd type %d", type);
                     75:                if (done != NULL && *done)
                     76:                        return;
                     77:        }
                     78: }