Fri, 16 Jan 2009 04:57:36 +0000
pposix: Add _NAME and _VERSION
520 | 1 | /* Prosody IM v0.1 |
2 | -- Copyright (C) 2008 Matthew Wild | |
3 | -- Copyright (C) 2008 Waqas Hussain | |
4 | -- | |
5 | -- This program is free software; you can redistribute it and/or | |
6 | -- modify it under the terms of the GNU General Public License | |
7 | -- as published by the Free Software Foundation; either version 2 | |
8 | -- of the License, or (at your option) any later version. | |
9 | -- | |
10 | -- This program is distributed in the hope that it will be useful, | |
11 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | -- GNU General Public License for more details. | |
14 | -- | |
15 | -- You should have received a copy of the GNU General Public License | |
16 | -- along with this program; if not, write to the Free Software | |
17 | -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
18 | */ | |
19 | ||
20 | ||
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21 | /* |
417 | 22 | * hashes.c |
23 | * Lua library for sha1, sha256 and md5 hashes | |
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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 | } |