Mercurial > dropbear

annotate libtomcrypt/src/hashes/helper/hash_file.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 eef377591301
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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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12
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13 /**
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14 @file hash_file.c
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15 Hash a file, Tom St Denis
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16 */
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17
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18 /**
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19 @param hash The index of the hash desired
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20 @param fname The name of the file you wish to hash
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21 @param out [out] The destination of the digest
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22 @param outlen [in/out] The max size and resulting size of the message digest
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23 @result CRYPT_OK if successful
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24 */
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25 int hash_file(int hash, const char *fname, unsigned char *out, unsigned long *outlen)
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26 {
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27 #ifdef LTC_NO_FILE
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28 return CRYPT_NOP;
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29 #else
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30 FILE *in;
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31 int err;
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32 LTC_ARGCHK(fname != NULL);
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33 LTC_ARGCHK(out != NULL);
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34 LTC_ARGCHK(outlen != NULL);
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35
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36 if ((err = hash_is_valid(hash)) != CRYPT_OK) {
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37 return err;
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38 }
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40 in = fopen(fname, "rb");
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41 if (in == NULL) {
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42 return CRYPT_FILE_NOTFOUND;
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43 }
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45 err = hash_filehandle(hash, in, out, outlen);
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46 if (fclose(in) != 0) {
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47 return CRYPT_ERROR;
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48 }
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50 return err;
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51 #endif
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52 }
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55 /* $Source: /cvs/libtom/libtomcrypt/src/hashes/helper/hash_file.c,v $ */
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56 /* $Revision: 1.4 $ */
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57 /* $Date: 2006/03/31 14:15:35 $ */