Mercurial > dropbear
annotate libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c @ 1630:9579377b5f8b
use strlcpy & strlcat (#74)
* refactor checkpubkeyperms() with safe BSD functions
fix gcc8 warnings
```
svr-authpubkey.c: In function 'checkpubkeyperms':
svr-authpubkey.c:427:2: warning: 'strncat' specified bound 5 equals source length [-Wstringop-overflow=]
strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
svr-authpubkey.c:433:2: warning: 'strncat' specified bound 16 equals source length [-Wstringop-overflow=]
strncat(filename, "/authorized_keys", 16);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```
see https://www.sudo.ws/todd/papers/strlcpy.html
* restore strlcpy in xstrdup
see original https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/xmalloc.c?rev=1.16
| author | François Perrad <francois.perrad@gadz.org> |
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| date | Wed, 20 Mar 2019 15:09:19 +0100 |
| parents | 6dba84798cd5 |
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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 #include "tomcrypt.h" |
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10 |
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11 /** |
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12 @file der_decode_boolean.c |
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13 ASN.1 DER, decode a BOOLEAN, Tom St Denis |
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14 */ |
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15 |
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16 |
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17 #ifdef LTC_DER |
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18 |
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19 /** |
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20 Read a BOOLEAN |
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21 @param in The destination for the DER encoded BOOLEAN |
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22 @param inlen The size of the DER BOOLEAN |
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23 @param out [out] The boolean to decode |
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24 @return CRYPT_OK if successful |
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25 */ |
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26 int der_decode_boolean(const unsigned char *in, unsigned long inlen, |
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27 int *out) |
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28 { |
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29 LTC_ARGCHK(in != NULL); |
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30 LTC_ARGCHK(out != NULL); |
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31 |
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32 if (inlen < 3 || in[0] != 0x01 || in[1] != 0x01 || (in[2] != 0x00 && in[2] != 0xFF)) { |
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33 return CRYPT_INVALID_ARG; |
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34 } |
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35 |
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36 *out = (in[2]==0xFF) ? 1 : 0; |
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37 |
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38 return CRYPT_OK; |
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39 } |
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40 |
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41 #endif |
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42 |
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43 /* ref: $Format:%D$ */ |
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44 /* git commit: $Format:%H$ */ |
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45 /* commit time: $Format:%ai$ */ |