/* Prosody IM v0.4 -- Copyright (C) 2008 Matthew Wild -- Copyright (C) 2008 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- */ /* * hashes.c * Lua library for sha1, sha256 and md5 hashes */ #include <string.h> #include "lua.h" #include "lauxlib.h" #include <openssl/sha.h> #include <openssl/md5.h> const char* hex_tab = "0123456789abcdef"; void toHex(const char* in, int length, char* out) { int i; for (i = 0; i < length; i++) { out[i*2] = hex_tab[(in[i] >> 4) & 0xF]; out[i*2+1] = hex_tab[(in[i]) & 0xF]; } } #define MAKE_HASH_FUNCTION(myFunc, func, size) \ static int myFunc(lua_State *L) { \ size_t len; \ const char *s = luaL_checklstring(L, 1, &len); \ int hex_out = lua_toboolean(L, 2); \ char hash[size]; \ char result[size*2]; \ func((const unsigned char*)s, len, (unsigned char*)hash); \ if (hex_out) { \ toHex(hash, size, result); \ lua_pushlstring(L, result, size*2); \ } else { \ lua_pushlstring(L, hash, size);\ } \ return 1; \ } MAKE_HASH_FUNCTION(Lsha1, SHA1, 20) MAKE_HASH_FUNCTION(Lsha256, SHA256, 32) MAKE_HASH_FUNCTION(Lmd5, MD5, 16) static const luaL_Reg Reg[] = { { "sha1", Lsha1 }, { "sha256", Lsha256 }, { "md5", Lmd5 }, { NULL, NULL } }; LUALIB_API int luaopen_util_hashes(lua_State *L) { luaL_register(L, "hashes", Reg); lua_pushliteral(L, "version"); /** version */ lua_pushliteral(L, "-3.14"); lua_settable(L,-3); return 1; }