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Annotation of src/usr.bin/ssh/dispatch.c, Revision 1.2.2.3

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:  *
                     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"
1.2.2.3 ! jason      25: RCSID("$OpenBSD: dispatch.c,v 1.10 2001/02/18 18:33:53 markus Exp $");
        !            26:
        !            27: #include "ssh1.h"
        !            28: #include "ssh2.h"
        !            29: #include "log.h"
1.1       markus     30: #include "dispatch.h"
                     31: #include "packet.h"
1.2.2.3 ! jason      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
1.2.2.2   jason      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);
1.2.2.3 ! jason      43:        if (compat20 && type == SSH2_MSG_KEXINIT)
        !            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
1.2.2.2   jason      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)
1.2.2.2   jason      73:                        (*dispatch[type])(type, plen, ctxt);
1.1       markus     74:                else
1.2.2.3 ! jason      75:                        packet_disconnect("protocol error: rcvd type %d", type);
1.1       markus     76:                if (done != NULL && *done)
                     77:                        return;
                     78:        }
                     79: }