Mercurial > dropbear

annotate circbuffer.h @ 1902:4a6725ac957c

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Revert "Don't include sk keys at all in KEX list" This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72. The sk algorithms need to remain in the sigalgs list so that they are included in the server-sig-algs ext-info message sent by the server. RFC8308 for server-sig-algs requires that all algorithms are listed (though OpenSSH client 8.4p1 tested doesn't require that)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 24 Mar 2022 13:42:08 +0800
parents 06d52bcb8094
children
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1 /*
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2 * Dropbear SSH
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3 *
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4 * Copyright (c) 2002-2004 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_CIRCBUFFER_H_
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26 #define DROPBEAR_CIRCBUFFER_H_
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27 struct circbuf {
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28
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29 unsigned int size;
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30 unsigned int readpos;
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31 unsigned int writepos;
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32 unsigned int used;
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33 unsigned char* data;
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34 };
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35
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36 typedef struct circbuf circbuffer;
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37
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38 circbuffer * cbuf_new(unsigned int size);
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39 void cbuf_free(circbuffer * cbuf);
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40
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41 unsigned int cbuf_getused(const circbuffer * cbuf); /* how much data stored */
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42 unsigned int cbuf_getavail(const circbuffer * cbuf); /* how much we can write */
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43 unsigned int cbuf_writelen(const circbuffer *cbuf); /* max linear write len */
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44
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45 /* returns pointers to the two portions of the circular buffer that can be read */
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46 void cbuf_readptrs(const circbuffer *cbuf,
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47 unsigned char **p1, unsigned int *len1,
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48 unsigned char **p2, unsigned int *len2);
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49 unsigned char* cbuf_writeptr(circbuffer *cbuf, unsigned int len);
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50 void cbuf_incrwrite(circbuffer *cbuf, unsigned int len);
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51 void cbuf_incrread(circbuffer *cbuf, unsigned int len);
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52 #endif