net.server_epoll: Add support for systemd socket activation
Allows creating listening sockets and accepting client connections
before Prosody starts.
This is unlike normal Prosody dynamic resource management, where ports
may added and removed at any time, and the ports defined by the config.
Weird things happen if these are closed (e.g. due to reload) so here we
prevent closing and ensure sockets are reused when opened again.
/* 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"
#if (LUA_VERSION_NUM < 504)
#define luaL_pushfail lua_pushnil
#endif
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_pushfail(L);
lua_pushfstring(L, "DnsQueryConfig returned %d", status);
return 2;
}
}
static int lerror(lua_State *L, char *string) {
luaL_pushfail(L);
lua_pushfstring(L, "%s: %d", string, GetLastError());
return 2;
}
static int Lget_consolecolor(lua_State *L) {
HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
WORD color;
DWORD read_len;
CONSOLE_SCREEN_BUFFER_INFO info;
if(console == INVALID_HANDLE_VALUE) {
return lerror(L, "GetStdHandle");
}
if(!GetConsoleScreenBufferInfo(console, &info)) {
return lerror(L, "GetConsoleScreenBufferInfo");
}
if(!ReadConsoleOutputAttribute(console, &color, 1, info.dwCursorPosition, &read_len)) {
return lerror(L, "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);
if(console == INVALID_HANDLE_VALUE) {
return lerror(L, "GetStdHandle");
}
if(!SetConsoleTextAttribute(console, color)) {
return lerror(L, "SetConsoleTextAttribute");
}
lua_pushboolean(L, 1);
return 1;
}
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_checkversion(L);
lua_newtable(L);
luaL_setfuncs(L, Reg, 0);
lua_pushliteral(L, "-3.14");
lua_setfield(L, -2, "version");
return 1;
}