Mercurial > dropbear

annotate libtomcrypt/src/misc/crypt/crypt_find_cipher_any.c @ 447:278805938dcf

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Patch from Nicolai Ehemann to try binding before going to the background, so that if it exits early (because something's already listening etc) then it will return an exitcode of 1.
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Jul 2007 15:54:18 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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13 /**
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14 @file crypt_find_cipher_any.c
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15 Find a cipher in the descriptor tables, Tom St Denis
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16 */
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18 /**
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19 Find a cipher flexibly. First by name then if not present by block and key size
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20 @param name The name of the cipher desired
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21 @param blocklen The minimum length of the block cipher desired (octets)
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22 @param keylen The minimum length of the key size desired (octets)
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23 @return >= 0 if found, -1 if not present
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24 */
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25 int find_cipher_any(const char *name, int blocklen, int keylen)
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26 {
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27 int x;
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29 LTC_ARGCHK(name != NULL);
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31 x = find_cipher(name);
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32 if (x != -1) return x;
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33
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34 LTC_MUTEX_LOCK(&ltc_cipher_mutex);
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35 for (x = 0; x < TAB_SIZE; x++) {
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36 if (cipher_descriptor[x].name == NULL) {
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37 continue;
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38 }
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39 if (blocklen <= (int)cipher_descriptor[x].block_length && keylen <= (int)cipher_descriptor[x].max_key_length) {
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40 LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
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41 return x;
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42 }
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43 }
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44 LTC_MUTEX_UNLOCK(&ltc_cipher_mutex);
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45 return -1;
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46 }
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47
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48 /* $Source: /cvs/libtom/libtomcrypt/src/misc/crypt/crypt_find_cipher_any.c,v $ */
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49 /* $Revision: 1.5 $ */
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50 /* $Date: 2006/03/31 14:15:35 $ */