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117 lines
2.7 KiB
117 lines
2.7 KiB
/* Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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*/
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/*
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* windows.c
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* Windows support functions for Lua
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*/
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#include <stdio.h>
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#include <windows.h>
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#include <windns.h>
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#include "lua.h"
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#include "lauxlib.h"
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#if (LUA_VERSION_NUM == 501)
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#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
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#endif
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#if (LUA_VERSION_NUM < 504)
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#define luaL_pushfail lua_pushnil
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#endif
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static int Lget_nameservers(lua_State *L) {
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char stack_buffer[1024]; // stack allocated buffer
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IP4_ARRAY *ips = (IP4_ARRAY *) stack_buffer;
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DWORD len = sizeof(stack_buffer);
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DNS_STATUS status;
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status = DnsQueryConfig(DnsConfigDnsServerList, FALSE, NULL, NULL, ips, &len);
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if(status == 0) {
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DWORD i;
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lua_createtable(L, ips->AddrCount, 0);
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for(i = 0; i < ips->AddrCount; i++) {
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DWORD ip = ips->AddrArray[i];
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char ip_str[16] = "";
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sprintf_s(ip_str, sizeof(ip_str), "%d.%d.%d.%d", (ip >> 0) & 255, (ip >> 8) & 255, (ip >> 16) & 255, (ip >> 24) & 255);
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lua_pushstring(L, ip_str);
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lua_rawseti(L, -2, i + 1);
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}
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return 1;
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} else {
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luaL_pushfail(L);
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lua_pushfstring(L, "DnsQueryConfig returned %d", status);
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return 2;
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}
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}
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static int lerror(lua_State *L, char *string) {
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luaL_pushfail(L);
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lua_pushfstring(L, "%s: %d", string, GetLastError());
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return 2;
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}
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static int Lget_consolecolor(lua_State *L) {
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HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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WORD color;
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DWORD read_len;
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CONSOLE_SCREEN_BUFFER_INFO info;
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if(console == INVALID_HANDLE_VALUE) {
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return lerror(L, "GetStdHandle");
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}
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if(!GetConsoleScreenBufferInfo(console, &info)) {
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return lerror(L, "GetConsoleScreenBufferInfo");
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}
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if(!ReadConsoleOutputAttribute(console, &color, 1, info.dwCursorPosition, &read_len)) {
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return lerror(L, "ReadConsoleOutputAttribute");
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}
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lua_pushnumber(L, color);
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return 1;
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}
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static int Lset_consolecolor(lua_State *L) {
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int color = luaL_checkint(L, 1);
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HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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if(console == INVALID_HANDLE_VALUE) {
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return lerror(L, "GetStdHandle");
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}
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if(!SetConsoleTextAttribute(console, color)) {
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return lerror(L, "SetConsoleTextAttribute");
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}
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lua_pushboolean(L, 1);
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return 1;
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}
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static const luaL_Reg Reg[] = {
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{ "get_nameservers", Lget_nameservers },
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{ "get_consolecolor", Lget_consolecolor },
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{ "set_consolecolor", Lset_consolecolor },
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{ NULL, NULL }
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};
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LUALIB_API int luaopen_util_windows(lua_State *L) {
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#if (LUA_VERSION_NUM > 501)
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luaL_checkversion(L);
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#endif
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lua_newtable(L);
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luaL_setfuncs(L, Reg, 0);
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lua_pushliteral(L, "-3.14");
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lua_setfield(L, -2, "version");
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return 1;
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}
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