prosody
d55e67e4191a
util-src/windows.c

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util-src/windows.c @ 3940:d55e67e4191a

mod_pubsub: Add get_subscriptions and get_subscriptions_other capabilities to default affiliations
author Matthew Wild <mwild1@gmail.com>
date Wed, 22 Dec 2010 03:49:23 +0000
parent 3748:2237796ba228
child 4128:b6d072a3668d
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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 luaL_error(L, "DnsQueryConfig returned %d", status);
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42 return 0; // unreachable, but prevents a compiler warning
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43 }
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44 }
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45
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46 static void lassert(lua_State *L, BOOL test, char* string) {
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47 if (!test) {
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48 luaL_error(L, "%s: %d", string, GetLastError());
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49 }
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50 }
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51
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52 static int Lget_consolecolor(lua_State *L) {
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53 HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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54 WORD color; DWORD read_len;
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55
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56 CONSOLE_SCREEN_BUFFER_INFO info;
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57
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58 lassert(L, console != INVALID_HANDLE_VALUE, "GetStdHandle");
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59 lassert(L, GetConsoleScreenBufferInfo(console, &info), "GetConsoleScreenBufferInfo");
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60 lassert(L, ReadConsoleOutputAttribute(console, &color, sizeof(WORD), info.dwCursorPosition, &read_len), "ReadConsoleOutputAttribute");
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61
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62 lua_pushnumber(L, color);
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63 return 1;
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64 }
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65 static int Lset_consolecolor(lua_State *L) {
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66 int color = luaL_checkint(L, 1);
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67 HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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68 lassert(L, console != INVALID_HANDLE_VALUE, "GetStdHandle");
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69 lassert(L, SetConsoleTextAttribute(console, color), "SetConsoleTextAttribute");
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70 return 0;
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71 }
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72
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73 static const luaL_Reg Reg[] =
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74 {
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75 { "get_nameservers", Lget_nameservers },
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76 { "get_consolecolor", Lget_consolecolor },
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77 { "set_consolecolor", Lset_consolecolor },
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78 { NULL, NULL }
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79 };
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80
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81 LUALIB_API int luaopen_util_windows(lua_State *L) {
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82 luaL_register(L, "windows", Reg);
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83 lua_pushliteral(L, "version"); /** version */
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84 lua_pushliteral(L, "-3.14");
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85 lua_settable(L,-3);
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86 return 1;
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87 }