prosody
24524d70a50a
util-src/windows.c

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util-src/windows.c @ 4663:24524d70a50a

moduleapi: module:depends(): Load shared modules onto the current host even if they are loaded globally already
author Matthew Wild <mwild1@gmail.com>
date Mon, 23 Apr 2012 14:15:07 +0100
parent 4128:b6d072a3668d
child 5864:22b1d18eb919
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1 /* Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8 */
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9
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10 /*
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11 * windows.c
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12 * Windows support functions for Lua
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13 */
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14
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15 #include <stdio.h>
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16 #include <windows.h>
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17 #include <windns.h>
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18
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19 #include "lua.h"
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20 #include "lauxlib.h"
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21
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22 static int Lget_nameservers(lua_State *L) {
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23 char stack_buffer[1024]; // stack allocated buffer
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24 IP4_ARRAY* ips = (IP4_ARRAY*) stack_buffer;
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25 DWORD len = sizeof(stack_buffer);
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26 DNS_STATUS status;
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27
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28 status = DnsQueryConfig(DnsConfigDnsServerList, FALSE, NULL, NULL, ips, &len);
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29 if (status == 0) {
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30 DWORD i;
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31 lua_createtable(L, ips->AddrCount, 0);
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32 for (i = 0; i < ips->AddrCount; i++) {
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33 DWORD ip = ips->AddrArray[i];
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34 char ip_str[16] = "";
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35 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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36 lua_pushstring(L, ip_str);
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37 lua_rawseti(L, -2, i+1);
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38 }
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39 return 1;
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40 } else {
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41 lua_pushnil(L);
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42 lua_pushfstring(L, "DnsQueryConfig returned %d", status);
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43 return 2;
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44 }
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45 }
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46
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47 static int lerror(lua_State *L, char* string) {
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48 lua_pushnil(L);
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49 lua_pushfstring(L, "%s: %d", string, GetLastError());
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50 return 2;
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51 }
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52
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53 static int Lget_consolecolor(lua_State *L) {
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54 HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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55 WORD color; DWORD read_len;
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56
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57 CONSOLE_SCREEN_BUFFER_INFO info;
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58
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59 if (console == INVALID_HANDLE_VALUE) return lerror(L, "GetStdHandle");
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60 if (!GetConsoleScreenBufferInfo(console, &info)) return lerror(L, "GetConsoleScreenBufferInfo");
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61 if (!ReadConsoleOutputAttribute(console, &color, sizeof(WORD), info.dwCursorPosition, &read_len)) return lerror(L, "ReadConsoleOutputAttribute");
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62
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63 lua_pushnumber(L, color);
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64 return 1;
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65 }
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66 static int Lset_consolecolor(lua_State *L) {
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67 int color = luaL_checkint(L, 1);
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68 HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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69 if (console == INVALID_HANDLE_VALUE) return lerror(L, "GetStdHandle");
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70 if (!SetConsoleTextAttribute(console, color)) return lerror(L, "SetConsoleTextAttribute");
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71 lua_pushboolean(L, 1);
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72 return 1;
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73 }
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74
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75 static const luaL_Reg Reg[] =
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76 {
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77 { "get_nameservers", Lget_nameservers },
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78 { "get_consolecolor", Lget_consolecolor },
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79 { "set_consolecolor", Lset_consolecolor },
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80 { NULL, NULL }
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81 };
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82
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83 LUALIB_API int luaopen_util_windows(lua_State *L) {
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84 luaL_register(L, "windows", Reg);
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85 lua_pushliteral(L, "version"); /** version */
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86 lua_pushliteral(L, "-3.14");
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87 lua_settable(L,-3);
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88 return 1;
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89 }