/* Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- */ /* * windows.c * Windows support functions for Lua */ #include <stdio.h> #include <windows.h> #include <windns.h> #include "lua.h" #include "lauxlib.h" static int Lget_nameservers(lua_State *L) { char stack_buffer[1024]; // stack allocated buffer IP4_ARRAY* ips = (IP4_ARRAY*) stack_buffer; DWORD len = sizeof(stack_buffer); DNS_STATUS status; status = DnsQueryConfig(DnsConfigDnsServerList, FALSE, NULL, NULL, ips, &len); if (status == 0) { DWORD i; lua_createtable(L, ips->AddrCount, 0); for (i = 0; i < ips->AddrCount; i++) { DWORD ip = ips->AddrArray[i]; char ip_str[16] = ""; sprintf_s(ip_str, sizeof(ip_str), "%d.%d.%d.%d", (ip >> 0) & 255, (ip >> 8) & 255, (ip >> 16) & 255, (ip >> 24) & 255); lua_pushstring(L, ip_str); lua_rawseti(L, -2, i+1); } return 1; } else { luaL_error(L, "DnsQueryConfig returned %d", status); return 0; // unreachable, but prevents a compiler warning } } static void lassert(lua_State *L, BOOL test, char* string) { if (!test) { luaL_error(L, "%s: %d", string, GetLastError()); } } static int Lget_consolecolor(lua_State *L) { HWND console = GetStdHandle(STD_OUTPUT_HANDLE); WORD color; DWORD read_len; CONSOLE_SCREEN_BUFFER_INFO info; lassert(L, console != INVALID_HANDLE_VALUE, "GetStdHandle"); lassert(L, GetConsoleScreenBufferInfo(console, &info), "GetConsoleScreenBufferInfo"); lassert(L, ReadConsoleOutputAttribute(console, &color, sizeof(WORD), info.dwCursorPosition, &read_len), "ReadConsoleOutputAttribute"); lua_pushnumber(L, color); return 1; } static int Lset_consolecolor(lua_State *L) { int color = luaL_checkint(L, 1); HWND console = GetStdHandle(STD_OUTPUT_HANDLE); lassert(L, console != INVALID_HANDLE_VALUE, "GetStdHandle"); lassert(L, SetConsoleTextAttribute(console, color), "SetConsoleTextAttribute"); return 0; } static const luaL_Reg Reg[] = { { "get_nameservers", Lget_nameservers }, { "get_consolecolor", Lget_consolecolor }, { "set_consolecolor", Lset_consolecolor }, { NULL, NULL } }; LUALIB_API int luaopen_util_windows(lua_State *L) { luaL_register(L, "windows", Reg); lua_pushliteral(L, "version"); /** version */ lua_pushliteral(L, "-3.14"); lua_settable(L,-3); return 1; }