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annotate buffer.h @ 1665:7c17995bcdfb

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Improve address logging on early exit messages (#83) Change 'Early exit' and 'Exit before auth' messages to include the IP address & port as part of the message. This allows log scanning utilities such as 'fail2ban' to obtain the offending IP address as part of the failure event instead of extracting the PID from the message and then scanning the log again for match 'child connection from' messages Signed-off-by: Kevin Darbyshire-Bryant <[email protected]>
author Kevin Darbyshire-Bryant <6500011+ldir-EDB0@users.noreply.github.com>
date Wed, 18 Mar 2020 15:28:56 +0000
parents 06d52bcb8094
children d5cdc60db08e
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1 /*
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2 * Dropbear - a SSH2 server
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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 DROPBEAR_BUFFER_H_
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27 #define DROPBEAR_BUFFER_H_
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29 #include "includes.h"
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30
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31 struct buf {
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32 /* don't manipulate data member outside of buffer.c - it
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33 is a pointer into the malloc holding buffer itself */
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34 unsigned char * data;
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35 unsigned int len; /* the used size */
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36 unsigned int pos;
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37 unsigned int size; /* the memory size */
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38
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39 };
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40
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41 typedef struct buf buffer;
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42
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43 buffer * buf_new(unsigned int size);
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44 /* Possibly returns a new buffer*, like realloc() */
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45 buffer * buf_resize(buffer *buf, unsigned int newsize);
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46 void buf_free(buffer* buf);
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47 void buf_burn(const buffer* buf);
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48 buffer* buf_newcopy(const buffer* buf);
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49 void buf_setlen(buffer* buf, unsigned int len);
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50 void buf_incrlen(buffer* buf, unsigned int incr);
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51 void buf_setpos(buffer* buf, unsigned int pos);
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52 void buf_incrpos(buffer* buf, int incr); /* -ve is ok, to go backwards */
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53 void buf_incrwritepos(buffer* buf, unsigned int incr);
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54 unsigned char buf_getbyte(buffer* buf);
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55 unsigned char buf_getbool(buffer* buf);
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56 void buf_putbyte(buffer* buf, unsigned char val);
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57 unsigned char* buf_getptr(const buffer* buf, unsigned int len);
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58 unsigned char* buf_getwriteptr(const buffer* buf, unsigned int len);
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59 char* buf_getstring(buffer* buf, unsigned int *retlen);
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60 buffer * buf_getstringbuf(buffer *buf);
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61 void buf_eatstring(buffer *buf);
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62 void buf_putint(buffer* buf, unsigned int val);
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63 void buf_putstring(buffer* buf, const char* str, unsigned int len);
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64 void buf_putbufstring(buffer *buf, const buffer* buf_str);
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65 void buf_putbytes(buffer *buf, const unsigned char *bytes, unsigned int len);
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66 void buf_putmpint(buffer* buf, mp_int * mp);
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67 int buf_getmpint(buffer* buf, mp_int* mp);
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68 unsigned int buf_getint(buffer* buf);
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70 #endif /* DROPBEAR_BUFFER_H_ */