prosody
f8ddaaa08a8e
util-src/hashes.c

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util-src/hashes.c @ 4756:f8ddaaa08a8e

mod_s2s/s2sout.lib: Fix imports and some undefined variables
author Matthew Wild <mwild1@gmail.com>
date Sat, 28 Apr 2012 03:11:45 +0100
parent 2923:b7049746bd29
child 4828:f3e841521436
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1 /* Prosody IM
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2 -- Copyright (C) 2009-2010 Matthew Wild
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3 -- Copyright (C) 2009-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8 */
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9
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10
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11 /*
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12 * hashes.c
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13 * Lua library for sha1, sha256 and md5 hashes
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14 */
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15
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16 #include <string.h>
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17
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18 #include "lua.h"
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19 #include "lauxlib.h"
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20 #include <openssl/sha.h>
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21 #include <openssl/md5.h>
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22
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23 const char* hex_tab = "0123456789abcdef";
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24 void toHex(const char* in, int length, char* out) {
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25 int i;
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26 for (i = 0; i < length; i++) {
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27 out[i*2] = hex_tab[(in[i] >> 4) & 0xF];
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28 out[i*2+1] = hex_tab[(in[i]) & 0xF];
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29 }
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30 }
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31
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32 #define MAKE_HASH_FUNCTION(myFunc, func, size) \
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33 static int myFunc(lua_State *L) { \
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34 size_t len; \
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35 const char *s = luaL_checklstring(L, 1, &len); \
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36 int hex_out = lua_toboolean(L, 2); \
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37 char hash[size]; \
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38 char result[size*2]; \
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39 func((const unsigned char*)s, len, (unsigned char*)hash); \
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40 if (hex_out) { \
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41 toHex(hash, size, result); \
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42 lua_pushlstring(L, result, size*2); \
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43 } else { \
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44 lua_pushlstring(L, hash, size);\
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45 } \
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46 return 1; \
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47 }
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48
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49 MAKE_HASH_FUNCTION(Lsha1, SHA1, 20)
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50 MAKE_HASH_FUNCTION(Lsha256, SHA256, 32)
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51 MAKE_HASH_FUNCTION(Lmd5, MD5, 16)
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52
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53 static const luaL_Reg Reg[] =
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54 {
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55 { "sha1", Lsha1 },
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56 { "sha256", Lsha256 },
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57 { "md5", Lmd5 },
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58 { NULL, NULL }
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59 };
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60
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61 LUALIB_API int luaopen_util_hashes(lua_State *L)
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62 {
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63 luaL_register(L, "hashes", Reg);
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64 lua_pushliteral(L, "version"); /** version */
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65 lua_pushliteral(L, "-3.14");
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66 lua_settable(L,-3);
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67 return 1;
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68 }