Mercurial > dropbear
annotate listener.h @ 994:5c5ade336926
Prefer stronger algorithms in algorithm negotiation.
Prefer diffie-hellman-group14-sha1 (2048 bit) over
diffie-hellman-group1-sha1 (1024 bit).
Due to meet-in-the-middle attacks the effective key length of
three key 3DES is 112 bits. AES is stronger and faster then 3DES.
Prefer to delay the start of compression until after authentication
has completed. This avoids exposing compression code to attacks
from unauthenticated users.
(github pull request #9)
author | Fedor Brunner <fedor.brunner@azet.sk> |
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date | Fri, 23 Jan 2015 23:00:25 +0800 |
parents | e3adf4cf5465 |
children | deed0571cacc |
rev | line source |
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1 /* |
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2 * Dropbear SSH |
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3 * |
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4 * Copyright (c) 2002,2003 Matt Johnston |
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5 * All rights reserved. |
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6 * |
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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8 * of this software and associated documentation files (the "Software"), to deal |
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9 * in the Software without restriction, including without limitation the rights |
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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11 * copies of the Software, and to permit persons to whom the Software is |
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12 * furnished to do so, subject to the following conditions: |
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13 * |
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14 * The above copyright notice and this permission notice shall be included in |
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15 * all copies or substantial portions of the Software. |
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16 * |
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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23 * SOFTWARE. */ |
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24 |
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25 #ifndef _LISTENER_H |
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26 #define _LISTENER_H |
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27 |
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28 #define MAX_LISTENERS 20 |
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29 #define LISTENER_EXTEND_SIZE 1 |
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30 |
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31 struct Listener { |
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32 |
62 | 33 int socks[DROPBEAR_MAX_SOCKS]; |
34 unsigned int nsocks; | |
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35 |
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36 int index; /* index in the array of listeners */ |
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37 |
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38 void (*acceptor)(struct Listener*, int sock); |
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39 void (*cleanup)(struct Listener*); |
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40 |
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41 int type; /* CHANNEL_ID_X11, CHANNEL_ID_AGENT, |
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42 CHANNEL_ID_TCPDIRECT (for clients), |
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43 CHANNEL_ID_TCPFORWARDED (for servers) */ |
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44 |
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45 void *typedata; |
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46 |
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47 }; |
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48 |
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49 void listeners_initialise(); |
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50 void handle_listeners(fd_set * readfds); |
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51 void set_listener_fds(fd_set * readfds); |
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52 |
62 | 53 struct Listener* new_listener(int socks[], unsigned int nsocks, |
54 int type, void* typedata, | |
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55 void (*acceptor)(struct Listener* listener, int sock), |
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56 void (*cleanup)(struct Listener*)); |
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57 |
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58 struct Listener * get_listener(int type, void* typedata, |
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59 int (*match)(void*, void*)); |
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60 |
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61 void remove_listener(struct Listener* listener); |
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62 |
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63 #endif /* _LISTENER_H */ |