prosody
ae2a11066001
util-src/windows.c

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util-src/windows.c @ 11204:ae2a11066001

mod_disco: Add some spacing to improve readability and code navigation
author Kim Alvefur <zash@zash.se>
date Tue, 10 Nov 2020 14:46:49 +0100
parent 10921:6eb5d2bb11af
child 12575:1f6f05a98fcd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 #if (LUA_VERSION_NUM == 501)
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23 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
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24 #endif
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25 #if (LUA_VERSION_NUM < 504)
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26 #define luaL_pushfail lua_pushnil
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27 #endif
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28
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29 static int Lget_nameservers(lua_State *L) {
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30 char stack_buffer[1024]; // stack allocated buffer
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31 IP4_ARRAY *ips = (IP4_ARRAY *) stack_buffer;
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32 DWORD len = sizeof(stack_buffer);
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33 DNS_STATUS status;
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34
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35 status = DnsQueryConfig(DnsConfigDnsServerList, FALSE, NULL, NULL, ips, &len);
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36
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37 if(status == 0) {
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38 DWORD i;
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39 lua_createtable(L, ips->AddrCount, 0);
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40
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41 for(i = 0; i < ips->AddrCount; i++) {
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42 DWORD ip = ips->AddrArray[i];
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43 char ip_str[16] = "";
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44 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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45 lua_pushstring(L, ip_str);
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46 lua_rawseti(L, -2, i + 1);
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47 }
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48
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49 return 1;
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50 } else {
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51 luaL_pushfail(L);
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52 lua_pushfstring(L, "DnsQueryConfig returned %d", status);
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53 return 2;
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54 }
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55 }
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56
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57 static int lerror(lua_State *L, char *string) {
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58 luaL_pushfail(L);
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59 lua_pushfstring(L, "%s: %d", string, GetLastError());
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60 return 2;
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61 }
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62
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63 static int Lget_consolecolor(lua_State *L) {
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64 HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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65 WORD color;
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66 DWORD read_len;
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67
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68 CONSOLE_SCREEN_BUFFER_INFO info;
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69
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70 if(console == INVALID_HANDLE_VALUE) {
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71 return lerror(L, "GetStdHandle");
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72 }
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73
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74 if(!GetConsoleScreenBufferInfo(console, &info)) {
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75 return lerror(L, "GetConsoleScreenBufferInfo");
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76 }
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77
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78 if(!ReadConsoleOutputAttribute(console, &color, 1, info.dwCursorPosition, &read_len)) {
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79 return lerror(L, "ReadConsoleOutputAttribute");
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80 }
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81
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82 lua_pushnumber(L, color);
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83 return 1;
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84 }
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85 static int Lset_consolecolor(lua_State *L) {
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86 int color = luaL_checkint(L, 1);
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87 HWND console = GetStdHandle(STD_OUTPUT_HANDLE);
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88
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89 if(console == INVALID_HANDLE_VALUE) {
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90 return lerror(L, "GetStdHandle");
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91 }
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92
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93 if(!SetConsoleTextAttribute(console, color)) {
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94 return lerror(L, "SetConsoleTextAttribute");
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95 }
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96
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97 lua_pushboolean(L, 1);
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98 return 1;
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99 }
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100
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101 static const luaL_Reg Reg[] = {
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102 { "get_nameservers", Lget_nameservers },
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103 { "get_consolecolor", Lget_consolecolor },
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104 { "set_consolecolor", Lset_consolecolor },
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105 { NULL, NULL }
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106 };
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107
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108 LUALIB_API int luaopen_util_windows(lua_State *L) {
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109 #if (LUA_VERSION_NUM > 501)
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110 luaL_checkversion(L);
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111 #endif
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6c8f6364bc48 util-src/*.c: Don't create globals when loaded
Kim Alvefur <zash@zash.se>
parents: 5864
diff changeset
112 lua_newtable(L);
6789
6b180e77c97a util-src/*.c: Invert Lua 5.2 compat to be 5.2+ by default and a macro to support 5.1
Kim Alvefur <zash@zash.se>
parents: 6615
diff changeset
113 luaL_setfuncs(L, Reg, 0);
2924
8dc4e2e00129 util.windows: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
114 lua_pushliteral(L, "-3.14");
6412
0e94f89d0e62 util-src/*.c: Use the more concise lua_setfield
Kim Alvefur <zash@zash.se>
parents: 6411
diff changeset
115 lua_setfield(L, -2, "version");
2924
8dc4e2e00129 util.windows: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
116 return 1;
8dc4e2e00129 util.windows: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 2923
diff changeset
117 }