prosody
666e22848890
util-src/hashes.c

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util-src/hashes.c @ 474:666e22848890

Use unsigned int instead of uint because uint is already in use on OS X.
author Tobias Markmann <tm@ayena.de>
date Fri, 28 Nov 2008 19:24:08 +0100
parent 441:4089b62b510c
child 520:e96ac4bb6dd8
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1 /*
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2 * hashes.c
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3 * Lua library for sha1, sha256 and md5 hashes
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4 */
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5
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6 #include <string.h>
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7
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8 #include "lua.h"
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9 #include "lauxlib.h"
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10 #include <openssl/sha.h>
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11 #include <openssl/md5.h>
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13 const char* hex_tab = "0123456789abcdef";
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14 void toHex(const char* in, int length, char* out) {
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15 int i;
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16 for (i = 0; i < length; i++) {
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17 out[i*2] = hex_tab[(in[i] >> 4) & 0xF];
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18 out[i*2+1] = hex_tab[(in[i]) & 0xF];
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19 }
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20 }
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22 #define MAKE_HASH_FUNCTION(myFunc, func, size) \
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23 static int myFunc(lua_State *L) { \
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24 size_t len; \
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25 const char *s = luaL_checklstring(L, 1, &len); \
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26 int hex_out = lua_toboolean(L, 2); \
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27 char hash[size]; \
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28 char result[size*2]; \
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29 func((const unsigned char*)s, len, (unsigned char*)hash); \
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30 if (hex_out) { \
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31 toHex(hash, size, result); \
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32 lua_pushlstring(L, result, size*2); \
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33 } else { \
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34 lua_pushlstring(L, hash, size);\
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35 } \
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36 return 1; \
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37 }
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38
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39 MAKE_HASH_FUNCTION(Lsha1, SHA1, 20)
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40 MAKE_HASH_FUNCTION(Lsha256, SHA256, 32)
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41 MAKE_HASH_FUNCTION(Lmd5, MD5, 16)
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43 static const luaL_Reg Reg[] =
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44 {
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45 { "sha1", Lsha1 },
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46 { "sha256", Lsha256 },
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47 { "md5", Lmd5 },
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48 { NULL, NULL }
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49 };
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50
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51 LUALIB_API int luaopen_util_hashes(lua_State *L)
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52 {
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53 luaL_register(L, "hashes", Reg);
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54 lua_pushliteral(L, "version"); /** version */
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55 lua_pushliteral(L, "-3.14");
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56 lua_settable(L,-3);
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57 return 1;
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58 }