prosody
e96ac4bb6dd8
util-src/hashes.c

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util-src/hashes.c @ 520:e96ac4bb6dd8

and the C files too
author Matthew Wild <mwild1@gmail.com>
date Wed, 03 Dec 2008 14:45:03 +0000
parent 441:4089b62b510c
child 766:433a5226267f
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520
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1 /* Prosody IM v0.1
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2 -- Copyright (C) 2008 Matthew Wild
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3 -- Copyright (C) 2008 Waqas Hussain
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4 --
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5 -- This program is free software; you can redistribute it and/or
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6 -- modify it under the terms of the GNU General Public License
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7 -- as published by the Free Software Foundation; either version 2
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8 -- of the License, or (at your option) any later version.
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9 --
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10 -- This program is distributed in the hope that it will be useful,
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11 -- but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 -- GNU General Public License for more details.
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14 --
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15 -- You should have received a copy of the GNU General Public License
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16 -- along with this program; if not, write to the Free Software
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17 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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18 */
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19
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20
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21 /*
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22 * hashes.c
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23 * Lua library for sha1, sha256 and md5 hashes
416
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24 */
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25
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26 #include <string.h>
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27
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28 #include "lua.h"
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29 #include "lauxlib.h"
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30 #include <openssl/sha.h>
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31 #include <openssl/md5.h>
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32
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33 const char* hex_tab = "0123456789abcdef";
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34 void toHex(const char* in, int length, char* out) {
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35 int i;
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36 for (i = 0; i < length; i++) {
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37 out[i*2] = hex_tab[(in[i] >> 4) & 0xF];
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38 out[i*2+1] = hex_tab[(in[i]) & 0xF];
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39 }
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40 }
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41
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42 #define MAKE_HASH_FUNCTION(myFunc, func, size) \
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43 static int myFunc(lua_State *L) { \
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44 size_t len; \
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45 const char *s = luaL_checklstring(L, 1, &len); \
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46 int hex_out = lua_toboolean(L, 2); \
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47 char hash[size]; \
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48 char result[size*2]; \
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49 func((const unsigned char*)s, len, (unsigned char*)hash); \
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50 if (hex_out) { \
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51 toHex(hash, size, result); \
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52 lua_pushlstring(L, result, size*2); \
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53 } else { \
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54 lua_pushlstring(L, hash, size);\
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55 } \
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56 return 1; \
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57 }
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58
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59 MAKE_HASH_FUNCTION(Lsha1, SHA1, 20)
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60 MAKE_HASH_FUNCTION(Lsha256, SHA256, 32)
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61 MAKE_HASH_FUNCTION(Lmd5, MD5, 16)
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62
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63 static const luaL_Reg Reg[] =
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64 {
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65 { "sha1", Lsha1 },
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66 { "sha256", Lsha256 },
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67 { "md5", Lmd5 },
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68 { NULL, NULL }
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69 };
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70
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71 LUALIB_API int luaopen_util_hashes(lua_State *L)
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72 {
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73 luaL_register(L, "hashes", Reg);
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74 lua_pushliteral(L, "version"); /** version */
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75 lua_pushliteral(L, "-3.14");
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76 lua_settable(L,-3);
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77 return 1;
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78 }