Wed, 15 Dec 2010 03:33:00 +0500
net.xmppcomponent_listener: Move session creation from listener.onincoming to listener.onconnect.
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Remove version number from copyright headers
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1 | -- Prosody IM |
615 | 2 | -- This file is included with Prosody IM. It has modifications, |
3 | -- which are hereby placed in the public domain. | |
337 | 4 | |
5 | ||
6 | -- todo: quick (default) header generation | |
7 | -- todo: nxdomain, error handling | |
8 | -- todo: cache results of encodeName | |
9 | ||
10 | ||
11 | -- reference: http://tools.ietf.org/html/rfc1035 | |
12 | -- reference: http://tools.ietf.org/html/rfc1876 (LOC) | |
13 | ||
14 | ||
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15 | local socket = require "socket"; |
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net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
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16 | local timer = require "util.timer"; |
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net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
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17 | |
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net.dns: Updated to use util.windows.get_nameservers for enumerating nameservers on Windows.
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18 | local _, windows = pcall(require, "util.windows"); |
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net.dns: Updated to use util.windows.get_nameservers for enumerating nameservers on Windows.
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19 | local is_windows = (_ and windows) or os.getenv("WINDIR"); |
337 | 20 | |
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21 | local coroutine, io, math, string, table = |
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22 | coroutine, io, math, string, table; |
337 | 23 | |
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net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
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24 | local ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select, type= |
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net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
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25 | ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select, type; |
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net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
Waqas Hussain <waqas20@gmail.com>
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26 | |
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net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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27 | local ztact = { -- public domain 20080404 lua@ztact.com |
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28 | get = function(parent, ...) |
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29 | local len = select('#', ...); |
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30 | for i=1,len do |
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31 | parent = parent[select(i, ...)]; |
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32 | if parent == nil then break; end |
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33 | end |
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34 | return parent; |
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35 | end; |
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36 | set = function(parent, ...) |
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37 | local len = select('#', ...); |
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38 | local key, value = select(len-1, ...); |
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39 | local cutpoint, cutkey; |
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40 | |
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41 | for i=1,len-2 do |
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42 | local key = select (i, ...) |
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43 | local child = parent[key] |
337 | 44 | |
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45 | if value == nil then |
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46 | if child == nil then |
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net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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47 | return; |
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48 | elseif next(child, next(child)) then |
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49 | cutpoint = nil; cutkey = nil; |
0f87632b87e9
net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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50 | elseif cutpoint == nil then |
0f87632b87e9
net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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51 | cutpoint = parent; cutkey = key; |
0f87632b87e9
net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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52 | end |
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53 | elseif child == nil then |
0f87632b87e9
net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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54 | child = {}; |
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55 | parent[key] = child; |
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56 | end |
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57 | parent = child |
0f87632b87e9
net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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58 | end |
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net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
Waqas Hussain <waqas20@gmail.com>
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59 | |
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net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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60 | if value == nil and cutpoint then |
0f87632b87e9
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61 | cutpoint[cutkey] = nil; |
0f87632b87e9
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62 | else |
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63 | parent[key] = value; |
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64 | return value; |
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65 | end |
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66 | end; |
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67 | }; |
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68 | local get, set = ztact.get, ztact.set; |
337 | 69 | |
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net.dns: Make timeout configurable (default 15s)
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70 | local default_timeout = 15; |
337 | 71 | |
72 | -------------------------------------------------- module dns | |
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73 | module('dns') |
337 | 74 | local dns = _M; |
75 | ||
76 | ||
77 | -- dns type & class codes ------------------------------ dns type & class codes | |
78 | ||
79 | ||
80 | local append = table.insert | |
81 | ||
82 | ||
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83 | local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte |
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84 | return (i-(i%0x100))/0x100; |
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85 | end |
337 | 86 | |
87 | ||
88 | local function augment (t) -- - - - - - - - - - - - - - - - - - - - augment | |
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89 | local a = {}; |
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90 | for i,s in pairs(t) do |
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91 | a[i] = s; |
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92 | a[s] = s; |
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93 | a[string.lower(s)] = s; |
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94 | end |
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95 | return a; |
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96 | end |
337 | 97 | |
98 | ||
99 | local function encode (t) -- - - - - - - - - - - - - - - - - - - - - encode | |
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100 | local code = {}; |
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101 | for i,s in pairs(t) do |
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102 | local word = string.char(highbyte(i), i%0x100); |
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103 | code[i] = word; |
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104 | code[s] = word; |
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105 | code[string.lower(s)] = word; |
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106 | end |
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107 | return code; |
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108 | end |
337 | 109 | |
110 | ||
111 | dns.types = { | |
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112 | 'A', 'NS', 'MD', 'MF', 'CNAME', 'SOA', 'MB', 'MG', 'MR', 'NULL', 'WKS', |
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113 | 'PTR', 'HINFO', 'MINFO', 'MX', 'TXT', |
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114 | [ 28] = 'AAAA', [ 29] = 'LOC', [ 33] = 'SRV', |
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115 | [252] = 'AXFR', [253] = 'MAILB', [254] = 'MAILA', [255] = '*' }; |
337 | 116 | |
117 | ||
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118 | dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' }; |
337 | 119 | |
120 | ||
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121 | dns.type = augment (dns.types); |
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122 | dns.class = augment (dns.classes); |
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123 | dns.typecode = encode (dns.types); |
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124 | dns.classcode = encode (dns.classes); |
337 | 125 | |
126 | ||
127 | ||
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128 | local function standardize(qname, qtype, qclass) -- - - - - - - standardize |
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129 | if string.byte(qname, -1) ~= 0x2E then qname = qname..'.'; end |
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130 | qname = string.lower(qname); |
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131 | return qname, dns.type[qtype or 'A'], dns.class[qclass or 'IN']; |
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132 | end |
337 | 133 | |
134 | ||
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135 | local function prune(rrs, time, soft) -- - - - - - - - - - - - - - - prune |
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136 | time = time or socket.gettime(); |
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137 | for i,rr in pairs(rrs) do |
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138 | if rr.tod then |
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139 | -- rr.tod = rr.tod - 50 -- accelerated decripitude |
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140 | rr.ttl = math.floor(rr.tod - time); |
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141 | if rr.ttl <= 0 then |
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142 | table.remove(rrs, i); |
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143 | return prune(rrs, time, soft); -- Re-iterate |
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144 | end |
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145 | elseif soft == 'soft' then -- What is this? I forget! |
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146 | assert(rr.ttl == 0); |
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147 | rrs[i] = nil; |
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148 | end |
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149 | end |
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150 | end |
337 | 151 | |
152 | ||
153 | -- metatables & co. ------------------------------------------ metatables & co. | |
154 | ||
155 | ||
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156 | local resolver = {}; |
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157 | resolver.__index = resolver; |
337 | 158 | |
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159 | resolver.timeout = default_timeout; |
337 | 160 | |
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161 | local SRV_tostring; |
337 | 162 | |
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163 | local function default_rr_tostring(rr) |
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164 | local rr_val = rr.type and rr[rr.type:lower()]; |
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165 | if type(rr_val) ~= "string" then |
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166 | return "<UNKNOWN RDATA TYPE>"; |
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167 | end |
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168 | return rr_val; |
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169 | end |
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170 | |
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171 | local special_tostrings = { |
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172 | LOC = resolver.LOC_tostring; |
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173 | MX = function (rr) return string.format('%2i %s', rr.pref, rr.mx); end; |
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174 | SRV = SRV_tostring; |
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175 | }; |
337 | 176 | |
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177 | local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable |
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178 | function rr_metatable.__tostring(rr) |
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179 | local rr_string = (special_tostrings[rr.type] or default_rr_tostring)(rr); |
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180 | return string.format('%2s %-5s %6i %-28s %s', rr.class, rr.type, rr.ttl, rr.name, rr_string); |
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181 | end |
337 | 182 | |
183 | ||
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184 | local rrs_metatable = {}; -- - - - - - - - - - - - - - - - - - rrs_metatable |
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185 | function rrs_metatable.__tostring(rrs) |
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186 | local t = {}; |
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187 | for i,rr in pairs(rrs) do |
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188 | append(t, tostring(rr)..'\n'); |
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189 | end |
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190 | return table.concat(t); |
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191 | end |
337 | 192 | |
193 | ||
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194 | local cache_metatable = {}; -- - - - - - - - - - - - - - - - cache_metatable |
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195 | function cache_metatable.__tostring(cache) |
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196 | local time = socket.gettime(); |
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197 | local t = {}; |
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198 | for class,types in pairs(cache) do |
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199 | for type,names in pairs(types) do |
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200 | for name,rrs in pairs(names) do |
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201 | prune(rrs, time); |
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202 | append(t, tostring(rrs)); |
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203 | end |
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204 | end |
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205 | end |
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206 | return table.concat(t); |
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207 | end |
337 | 208 | |
209 | ||
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210 | function resolver:new() -- - - - - - - - - - - - - - - - - - - - - resolver |
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211 | local r = { active = {}, cache = {}, unsorted = {} }; |
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212 | setmetatable(r, resolver); |
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213 | setmetatable(r.cache, cache_metatable); |
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214 | setmetatable(r.unsorted, { __mode = 'kv' }); |
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215 | return r; |
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216 | end |
337 | 217 | |
218 | ||
219 | -- packet layer -------------------------------------------------- packet layer | |
220 | ||
221 | ||
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222 | function dns.random(...) -- - - - - - - - - - - - - - - - - - - dns.random |
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223 | math.randomseed(math.floor(10000*socket.gettime())); |
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224 | dns.random = math.random; |
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225 | return dns.random(...); |
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226 | end |
337 | 227 | |
228 | ||
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229 | local function encodeHeader(o) -- - - - - - - - - - - - - - - encodeHeader |
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230 | o = o or {}; |
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231 | o.id = o.id or dns.random(0, 0xffff); -- 16b (random) id |
337 | 232 | |
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233 | o.rd = o.rd or 1; -- 1b 1 recursion desired |
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234 | o.tc = o.tc or 0; -- 1b 1 truncated response |
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235 | o.aa = o.aa or 0; -- 1b 1 authoritative response |
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236 | o.opcode = o.opcode or 0; -- 4b 0 query |
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237 | -- 1 inverse query |
337 | 238 | -- 2 server status request |
239 | -- 3-15 reserved | |
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240 | o.qr = o.qr or 0; -- 1b 0 query, 1 response |
337 | 241 | |
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242 | o.rcode = o.rcode or 0; -- 4b 0 no error |
337 | 243 | -- 1 format error |
244 | -- 2 server failure | |
245 | -- 3 name error | |
246 | -- 4 not implemented | |
247 | -- 5 refused | |
248 | -- 6-15 reserved | |
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249 | o.z = o.z or 0; -- 3b 0 resvered |
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250 | o.ra = o.ra or 0; -- 1b 1 recursion available |
337 | 251 | |
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252 | o.qdcount = o.qdcount or 1; -- 16b number of question RRs |
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253 | o.ancount = o.ancount or 0; -- 16b number of answers RRs |
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254 | o.nscount = o.nscount or 0; -- 16b number of nameservers RRs |
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255 | o.arcount = o.arcount or 0; -- 16b number of additional RRs |
337 | 256 | |
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257 | -- string.char() rounds, so prevent roundup with -0.4999 |
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258 | local header = string.char( |
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259 | highbyte(o.id), o.id %0x100, |
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260 | o.rd + 2*o.tc + 4*o.aa + 8*o.opcode + 128*o.qr, |
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261 | o.rcode + 16*o.z + 128*o.ra, |
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262 | highbyte(o.qdcount), o.qdcount %0x100, |
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263 | highbyte(o.ancount), o.ancount %0x100, |
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264 | highbyte(o.nscount), o.nscount %0x100, |
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265 | highbyte(o.arcount), o.arcount %0x100 |
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266 | ); |
337 | 267 | |
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268 | return header, o.id; |
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269 | end |
337 | 270 | |
271 | ||
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272 | local function encodeName(name) -- - - - - - - - - - - - - - - - encodeName |
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273 | local t = {}; |
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274 | for part in string.gmatch(name, '[^.]+') do |
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275 | append(t, string.char(string.len(part))); |
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276 | append(t, part); |
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277 | end |
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278 | append(t, string.char(0)); |
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279 | return table.concat(t); |
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280 | end |
337 | 281 | |
282 | ||
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283 | local function encodeQuestion(qname, qtype, qclass) -- - - - encodeQuestion |
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284 | qname = encodeName(qname); |
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285 | qtype = dns.typecode[qtype or 'a']; |
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286 | qclass = dns.classcode[qclass or 'in']; |
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287 | return qname..qtype..qclass; |
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288 | end |
337 | 289 | |
290 | ||
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291 | function resolver:byte(len) -- - - - - - - - - - - - - - - - - - - - - byte |
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292 | len = len or 1; |
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293 | local offset = self.offset; |
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294 | local last = offset + len - 1; |
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295 | if last > #self.packet then |
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296 | error(string.format('out of bounds: %i>%i', last, #self.packet)); |
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297 | end |
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298 | self.offset = offset + len; |
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299 | return string.byte(self.packet, offset, last); |
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300 | end |
337 | 301 | |
302 | ||
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303 | function resolver:word() -- - - - - - - - - - - - - - - - - - - - - - word |
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304 | local b1, b2 = self:byte(2); |
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305 | return 0x100*b1 + b2; |
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306 | end |
337 | 307 | |
308 | ||
309 | function resolver:dword () -- - - - - - - - - - - - - - - - - - - - - dword | |
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310 | local b1, b2, b3, b4 = self:byte(4); |
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311 | --print('dword', b1, b2, b3, b4); |
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312 | return 0x1000000*b1 + 0x10000*b2 + 0x100*b3 + b4; |
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313 | end |
337 | 314 | |
315 | ||
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316 | function resolver:sub(len) -- - - - - - - - - - - - - - - - - - - - - - sub |
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317 | len = len or 1; |
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318 | local s = string.sub(self.packet, self.offset, self.offset + len - 1); |
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319 | self.offset = self.offset + len; |
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320 | return s; |
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321 | end |
337 | 322 | |
323 | ||
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324 | function resolver:header(force) -- - - - - - - - - - - - - - - - - - header |
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325 | local id = self:word(); |
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326 | --print(string.format(':header id %x', id)); |
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327 | if not self.active[id] and not force then return nil; end |
337 | 328 | |
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329 | local h = { id = id }; |
337 | 330 | |
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331 | local b1, b2 = self:byte(2); |
337 | 332 | |
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333 | h.rd = b1 %2; |
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334 | h.tc = b1 /2%2; |
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335 | h.aa = b1 /4%2; |
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336 | h.opcode = b1 /8%16; |
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337 | h.qr = b1 /128; |
337 | 338 | |
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339 | h.rcode = b2 %16; |
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340 | h.z = b2 /16%8; |
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341 | h.ra = b2 /128; |
337 | 342 | |
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343 | h.qdcount = self:word(); |
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344 | h.ancount = self:word(); |
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345 | h.nscount = self:word(); |
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346 | h.arcount = self:word(); |
337 | 347 | |
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348 | for k,v in pairs(h) do h[k] = v-v%1; end |
337 | 349 | |
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350 | return h; |
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351 | end |
337 | 352 | |
353 | ||
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354 | function resolver:name() -- - - - - - - - - - - - - - - - - - - - - - name |
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355 | local remember, pointers = nil, 0; |
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356 | local len = self:byte(); |
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357 | local n = {}; |
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358 | while len > 0 do |
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359 | if len >= 0xc0 then -- name is "compressed" |
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360 | pointers = pointers + 1; |
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361 | if pointers >= 20 then error('dns error: 20 pointers'); end; |
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362 | local offset = ((len-0xc0)*0x100) + self:byte(); |
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363 | remember = remember or self.offset; |
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364 | self.offset = offset + 1; -- +1 for lua |
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365 | else -- name is not compressed |
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366 | append(n, self:sub(len)..'.'); |
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367 | end |
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368 | len = self:byte(); |
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369 | end |
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370 | self.offset = remember or self.offset; |
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371 | return table.concat(n); |
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372 | end |
337 | 373 | |
374 | ||
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375 | function resolver:question() -- - - - - - - - - - - - - - - - - - question |
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376 | local q = {}; |
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377 | q.name = self:name(); |
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378 | q.type = dns.type[self:word()]; |
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379 | q.class = dns.class[self:word()]; |
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380 | return q; |
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381 | end |
337 | 382 | |
383 | ||
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384 | function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A |
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385 | local b1, b2, b3, b4 = self:byte(4); |
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386 | rr.a = string.format('%i.%i.%i.%i', b1, b2, b3, b4); |
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387 | end |
337 | 388 | |
389 | ||
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390 | function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME |
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391 | rr.cname = self:name(); |
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392 | end |
337 | 393 | |
394 | ||
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395 | function resolver:MX(rr) -- - - - - - - - - - - - - - - - - - - - - - - MX |
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396 | rr.pref = self:word(); |
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397 | rr.mx = self:name(); |
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398 | end |
337 | 399 | |
400 | ||
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401 | function resolver:LOC_nibble_power() -- - - - - - - - - - LOC_nibble_power |
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402 | local b = self:byte(); |
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403 | --print('nibbles', ((b-(b%0x10))/0x10), (b%0x10)); |
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404 | return ((b-(b%0x10))/0x10) * (10^(b%0x10)); |
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405 | end |
337 | 406 | |
407 | ||
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408 | function resolver:LOC(rr) -- - - - - - - - - - - - - - - - - - - - - - LOC |
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409 | rr.version = self:byte(); |
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410 | if rr.version == 0 then |
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411 | rr.loc = rr.loc or {}; |
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412 | rr.loc.size = self:LOC_nibble_power(); |
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413 | rr.loc.horiz_pre = self:LOC_nibble_power(); |
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414 | rr.loc.vert_pre = self:LOC_nibble_power(); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
415 | rr.loc.latitude = self:dword(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
416 | rr.loc.longitude = self:dword(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
417 | rr.loc.altitude = self:dword(); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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changeset
|
418 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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|
419 | end |
337 | 420 | |
421 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
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|
422 | local function LOC_tostring_degrees(f, pos, neg) -- - - - - - - - - - - - - |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
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|
423 | f = f - 0x80000000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
424 | if f < 0 then pos = neg; f = -f; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
425 | local deg, min, msec; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
426 | msec = f%60000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
427 | f = (f-msec)/60000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
428 | min = f%60; |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
429 | deg = (f-min)/60; |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
430 | return string.format('%3d %2d %2.3f %s', deg, min, msec/1000, pos); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
431 | end |
337 | 432 | |
433 | ||
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
434 | function resolver.LOC_tostring(rr) -- - - - - - - - - - - - - LOC_tostring |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
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|
435 | local t = {}; |
337 | 436 | |
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
437 | --[[ |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
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|
438 | for k,name in pairs { 'size', 'horiz_pre', 'vert_pre', 'latitude', 'longitude', 'altitude' } do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
439 | append(t, string.format('%4s%-10s: %12.0f\n', '', name, rr.loc[name])); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
440 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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|
441 | --]] |
337 | 442 | |
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
443 | append(t, string.format( |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
444 | '%s %s %.2fm %.2fm %.2fm %.2fm', |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
445 | LOC_tostring_degrees (rr.loc.latitude, 'N', 'S'), |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
446 | LOC_tostring_degrees (rr.loc.longitude, 'E', 'W'), |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
447 | (rr.loc.altitude - 10000000) / 100, |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
448 | rr.loc.size / 100, |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
449 | rr.loc.horiz_pre / 100, |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
450 | rr.loc.vert_pre / 100 |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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|
451 | )); |
337 | 452 | |
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
453 | return table.concat(t); |
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Waqas Hussain <waqas20@gmail.com>
parents:
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|
454 | end |
337 | 455 | |
456 | ||
2070
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
457 | function resolver:NS(rr) -- - - - - - - - - - - - - - - - - - - - - - - NS |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
458 | rr.ns = self:name(); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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|
459 | end |
337 | 460 | |
461 | ||
2070
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|
462 | function resolver:SOA(rr) -- - - - - - - - - - - - - - - - - - - - - - SOA |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
463 | end |
337 | 464 | |
465 | ||
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
466 | function resolver:SRV(rr) -- - - - - - - - - - - - - - - - - - - - - - SRV |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
467 | rr.srv = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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|
468 | rr.srv.priority = self:word(); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
469 | rr.srv.weight = self:word(); |
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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changeset
|
470 | rr.srv.port = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
471 | rr.srv.target = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
472 | end |
337 | 473 | |
3513
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
474 | function resolver:PTR(rr) |
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
475 | rr.ptr = self:name(); |
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
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diff
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|
476 | end |
337 | 477 | |
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
478 | function SRV_tostring(rr) -- - - - - - - - - - - - - - - - - - SRV_tostring |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
479 | local s = rr.srv; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
480 | return string.format( '%5d %5d %5d %s', s.priority, s.weight, s.port, s.target ); |
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net.dns: Fixed indentation and coding style.
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parents:
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changeset
|
481 | end |
337 | 482 | |
483 | ||
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
484 | function resolver:TXT(rr) -- - - - - - - - - - - - - - - - - - - - - - TXT |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
485 | rr.txt = self:sub (rr.rdlength); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
486 | end |
337 | 487 | |
488 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
489 | function resolver:rr() -- - - - - - - - - - - - - - - - - - - - - - - - rr |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
490 | local rr = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
491 | setmetatable(rr, rr_metatable); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
492 | rr.name = self:name(self); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
493 | rr.type = dns.type[self:word()] or rr.type; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
494 | rr.class = dns.class[self:word()] or rr.class; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
495 | rr.ttl = 0x10000*self:word() + self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
496 | rr.rdlength = self:word(); |
337 | 497 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
498 | if rr.ttl <= 0 then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
499 | rr.tod = self.time + 30; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
500 | else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
501 | rr.tod = self.time + rr.ttl; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
502 | end |
337 | 503 | |
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
504 | local remember = self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
505 | local rr_parser = self[dns.type[rr.type]]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
506 | if rr_parser then rr_parser(self, rr); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
507 | self.offset = remember; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
508 | rr.rdata = self:sub(rr.rdlength); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
509 | return rr; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
510 | end |
337 | 511 | |
512 | ||
513 | function resolver:rrs (count) -- - - - - - - - - - - - - - - - - - - - - rrs | |
2070
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
514 | local rrs = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
515 | for i = 1,count do append(rrs, self:rr()); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
516 | return rrs; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
517 | end |
337 | 518 | |
519 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
520 | function resolver:decode(packet, force) -- - - - - - - - - - - - - - decode |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
521 | self.packet, self.offset = packet, 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
522 | local header = self:header(force); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
523 | if not header then return nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
524 | local response = { header = header }; |
337 | 525 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
526 | response.question = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
527 | local offset = self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
528 | for i = 1,response.header.qdcount do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
529 | append(response.question, self:question()); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
530 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
531 | response.question.raw = string.sub(self.packet, offset, self.offset - 1); |
337 | 532 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
533 | if not force then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
534 | if not self.active[response.header.id] or not self.active[response.header.id][response.question.raw] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
535 | return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
536 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
537 | end |
337 | 538 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
539 | response.answer = self:rrs(response.header.ancount); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
540 | response.authority = self:rrs(response.header.nscount); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
541 | response.additional = self:rrs(response.header.arcount); |
337 | 542 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
543 | return response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
544 | end |
337 | 545 | |
546 | ||
547 | -- socket layer -------------------------------------------------- socket layer | |
548 | ||
549 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
550 | resolver.delays = { 1, 3 }; |
337 | 551 | |
552 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
553 | function resolver:addnameserver(address) -- - - - - - - - - - addnameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
554 | self.server = self.server or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
555 | append(self.server, address); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
556 | end |
337 | 557 | |
558 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
559 | function resolver:setnameserver(address) -- - - - - - - - - - setnameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
560 | self.server = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
561 | self:addnameserver(address); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
562 | end |
337 | 563 | |
564 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
565 | function resolver:adddefaultnameservers() -- - - - - adddefaultnameservers |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
566 | if is_windows then |
3544
f2aca3e0fe3b
net.dns: Fixed a traceback when util/windows.dll is unavailable on windows.
Waqas Hussain <waqas20@gmail.com>
parents:
3540
diff
changeset
|
567 | if windows and windows.get_nameservers then |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
568 | for _, server in ipairs(windows.get_nameservers()) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
569 | self:addnameserver(server); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
570 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
571 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
572 | if not self.server or #self.server == 0 then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
573 | -- TODO log warning about no nameservers, adding opendns servers as fallback |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
574 | self:addnameserver("208.67.222.222"); |
2741
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2740
diff
changeset
|
575 | self:addnameserver("208.67.220.220"); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
576 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
577 | else -- posix |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
578 | local resolv_conf = io.open("/etc/resolv.conf"); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
579 | if resolv_conf then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
580 | for line in resolv_conf:lines() do |
2740
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
581 | line = line:gsub("#.*$", "") |
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
582 | :match('^%s*nameserver%s+(.*)%s*$'); |
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
583 | if line then |
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
584 | line:gsub("%f[%d.](%d+%.%d+%.%d+%.%d+)%f[^%d.]", function (address) |
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
585 | self:addnameserver(address) |
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
586 | end); |
fcd30b72c50c
net.dns: More reliable parsing of resolv.conf - allow multiple nameserver IPs on one line (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents:
2620
diff
changeset
|
587 | end |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
588 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
589 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
590 | if not self.server or #self.server == 0 then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
591 | -- TODO log warning about no nameservers, adding localhost as the default nameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
592 | self:addnameserver("127.0.0.1"); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
593 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
594 | end |
399
93b6587d9afb
Added temporary fix for srv on windows: using opendns nameservers
Waqas Hussain <waqas20@gmail.com>
parents:
379
diff
changeset
|
595 | end |
337 | 596 | |
597 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
598 | function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
599 | self.socket = self.socket or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
600 | self.socketset = self.socketset or {}; |
337 | 601 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
602 | local sock = self.socket[servernum]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
603 | if sock then return sock; end |
337 | 604 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
605 | sock = socket.udp(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
606 | if self.socket_wrapper then sock = self.socket_wrapper(sock, self); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
607 | sock:settimeout(0); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
608 | -- todo: attempt to use a random port, fallback to 0 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
609 | sock:setsockname('*', 0); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
610 | sock:setpeername(self.server[servernum], 53); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
611 | self.socket[servernum] = sock; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
612 | self.socketset[sock] = servernum; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
613 | return sock; |
1786
4016d8bc30b8
net.dns: Multiple internal changes and API extensions to allow for more reliable DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
1523
diff
changeset
|
614 | end |
337 | 615 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
616 | function resolver:voidsocket(sock) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
617 | if self.socket[sock] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
618 | self.socketset[self.socket[sock]] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
619 | self.socket[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
620 | elseif self.socketset[sock] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
621 | self.socket[self.socketset[sock]] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
622 | self.socketset[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
623 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
624 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
625 | |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
626 | function resolver:socket_wrapper_set(func) -- - - - - - - socket_wrapper_set |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
627 | self.socket_wrapper = func; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
628 | end |
337 | 629 | |
630 | ||
631 | function resolver:closeall () -- - - - - - - - - - - - - - - - - - closeall | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
632 | for i,sock in ipairs(self.socket) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
633 | self.socket[i] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
634 | self.socketset[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
635 | sock:close(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
636 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
637 | end |
337 | 638 | |
639 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
640 | function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
641 | --print ('remember', type, rr.class, rr.type, rr.name) |
2620
481c6724818f
net.dns: Normalize records before placing them in the cache, fixes issues with CNAME targets in CAPS (fixes #161)
Matthew Wild <mwild1@gmail.com>
parents:
2619
diff
changeset
|
642 | local qname, qtype, qclass = standardize(rr.name, rr.type, rr.class); |
337 | 643 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
644 | if type ~= '*' then |
2620
481c6724818f
net.dns: Normalize records before placing them in the cache, fixes issues with CNAME targets in CAPS (fixes #161)
Matthew Wild <mwild1@gmail.com>
parents:
2619
diff
changeset
|
645 | type = qtype; |
481c6724818f
net.dns: Normalize records before placing them in the cache, fixes issues with CNAME targets in CAPS (fixes #161)
Matthew Wild <mwild1@gmail.com>
parents:
2619
diff
changeset
|
646 | local all = get(self.cache, qclass, '*', qname); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
647 | --print('remember all', all); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
648 | if all then append(all, rr); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
649 | end |
337 | 650 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
651 | self.cache = self.cache or setmetatable({}, cache_metatable); |
2620
481c6724818f
net.dns: Normalize records before placing them in the cache, fixes issues with CNAME targets in CAPS (fixes #161)
Matthew Wild <mwild1@gmail.com>
parents:
2619
diff
changeset
|
652 | local rrs = get(self.cache, qclass, type, qname) or |
481c6724818f
net.dns: Normalize records before placing them in the cache, fixes issues with CNAME targets in CAPS (fixes #161)
Matthew Wild <mwild1@gmail.com>
parents:
2619
diff
changeset
|
653 | set(self.cache, qclass, type, qname, setmetatable({}, rrs_metatable)); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
654 | append(rrs, rr); |
337 | 655 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
656 | if type == 'MX' then self.unsorted[rrs] = true; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
657 | end |
337 | 658 | |
659 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
660 | local function comp_mx(a, b) -- - - - - - - - - - - - - - - - - - - comp_mx |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
661 | return (a.pref == b.pref) and (a.mx < b.mx) or (a.pref < b.pref); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
662 | end |
337 | 663 | |
664 | ||
665 | function resolver:peek (qname, qtype, qclass) -- - - - - - - - - - - - peek | |
2070
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
666 | qname, qtype, qclass = standardize(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
667 | local rrs = get(self.cache, qclass, qtype, qname); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
668 | if not rrs then return nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
669 | if prune(rrs, socket.gettime()) and qtype == '*' or not next(rrs) then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
670 | set(self.cache, qclass, qtype, qname, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
671 | return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
672 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
673 | if self.unsorted[rrs] then table.sort (rrs, comp_mx); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
674 | return rrs; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
675 | end |
337 | 676 | |
677 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
678 | function resolver:purge(soft) -- - - - - - - - - - - - - - - - - - - purge |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
679 | if soft == 'soft' then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
680 | self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
681 | for class,types in pairs(self.cache or {}) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
682 | for type,names in pairs(types) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
683 | for name,rrs in pairs(names) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
684 | prune(rrs, self.time, 'soft') |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
685 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
686 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
687 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
688 | else self.cache = {}; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
689 | end |
337 | 690 | |
691 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
692 | function resolver:query(qname, qtype, qclass) -- - - - - - - - - - -- query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
693 | qname, qtype, qclass = standardize(qname, qtype, qclass) |
337 | 694 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
695 | if not self.server then self:adddefaultnameservers(); end |
337 | 696 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
697 | local question = encodeQuestion(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
698 | local peek = self:peek (qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
699 | if peek then return peek; end |
337 | 700 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
701 | local header, id = encodeHeader(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
702 | --print ('query id', id, qclass, qtype, qname) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
703 | local o = { |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
704 | packet = header..question, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
705 | server = self.best_server, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
706 | delay = 1, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
707 | retry = socket.gettime() + self.delays[1] |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
708 | }; |
337 | 709 | |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
710 | -- remember the query |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
711 | self.active[id] = self.active[id] or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
712 | self.active[id][question] = o; |
337 | 713 | |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
714 | -- remember which coroutine wants the answer |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
715 | local co = coroutine.running(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
716 | if co then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
717 | set(self.wanted, qclass, qtype, qname, co, true); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
718 | --set(self.yielded, co, qclass, qtype, qname, true); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
719 | end |
1786
4016d8bc30b8
net.dns: Multiple internal changes and API extensions to allow for more reliable DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
1523
diff
changeset
|
720 | |
3324
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
721 | local conn = self:getsocket(o.server) |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
722 | conn:send (o.packet) |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
723 | |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
724 | if timer and self.timeout then |
3324
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
725 | local num_servers = #self.server; |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
726 | local i = 1; |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
727 | timer.add_task(self.timeout, function () |
3324
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
728 | if get(self.wanted, qclass, qtype, qname, co) then |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
729 | if i < num_servers then |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
730 | i = i + 1; |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
731 | self:servfail(conn); |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
732 | o.server = self.best_server; |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
733 | conn = self:getsocket(o.server); |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
734 | conn:send(o.packet); |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
735 | return self.timeout; |
3324
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
736 | else |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
737 | -- Tried everything, failed |
3360
6c07b64e972c
net.dns: Call :cancel() on the current resolver instead of the prototype
Matthew Wild <mwild1@gmail.com>
parents:
3328
diff
changeset
|
738 | self:cancel(qclass, qtype, qname, co, true); |
3324
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
739 | end |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
740 | end |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
741 | end) |
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents:
3057
diff
changeset
|
742 | end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
743 | end |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
744 | |
1786
4016d8bc30b8
net.dns: Multiple internal changes and API extensions to allow for more reliable DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
1523
diff
changeset
|
745 | function resolver:servfail(sock) |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
746 | -- Resend all queries for this server |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
747 | |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
748 | local num = self.socketset[sock] |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
749 | |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
750 | -- Socket is dead now |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
751 | self:voidsocket(sock); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
752 | |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
753 | -- Find all requests to the down server, and retry on the next server |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
754 | self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
755 | for id,queries in pairs(self.active) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
756 | for question,o in pairs(queries) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
757 | if o.server == num then -- This request was to the broken server |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
758 | o.server = o.server + 1 -- Use next server |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
759 | if o.server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
760 | o.server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
761 | end |
337 | 762 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
763 | o.retries = (o.retries or 0) + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
764 | if o.retries >= #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
765 | --print('timeout'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
766 | queries[question] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
767 | else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
768 | local _a = self:getsocket(o.server); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
769 | if _a then _a:send(o.packet); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
770 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
771 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
772 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
773 | end |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
774 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
775 | if num == self.best_server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
776 | self.best_server = self.best_server + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
777 | if self.best_server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
778 | -- Exhausted all servers, try first again |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
779 | self.best_server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
780 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
781 | end |
1786
4016d8bc30b8
net.dns: Multiple internal changes and API extensions to allow for more reliable DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
1523
diff
changeset
|
782 | end |
337 | 783 | |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
784 | function resolver:settimeout(seconds) |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
785 | self.timeout = seconds; |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
786 | end |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
787 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
788 | function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
789 | --print('receive'); print(self.socket); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
790 | self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
791 | rset = rset or self.socket; |
337 | 792 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
793 | local response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
794 | for i,sock in pairs(rset) do |
337 | 795 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
796 | if self.socketset[sock] then |
2619
04158baefa34
net.dns: Update for new socket API
Matthew Wild <mwild1@gmail.com>
parents:
2578
diff
changeset
|
797 | local packet = sock:receive(); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
798 | if packet then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
799 | response = self:decode(packet); |
2293
8c10f13c0c20
modulemanager, net.dns: Remove trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2082
diff
changeset
|
800 | if response and self.active[response.header.id] |
2081
b9bbb709d62e
net.dns: Be more strict about checking the DNS replies we receive
Matthew Wild <mwild1@gmail.com>
parents:
2070
diff
changeset
|
801 | and self.active[response.header.id][response.question.raw] then |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
802 | --print('received response'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
803 | --self.print(response); |
337 | 804 | |
2082
1381b2071c2e
net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents:
2081
diff
changeset
|
805 | for j,rr in pairs(response.answer) do |
1381b2071c2e
net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents:
2081
diff
changeset
|
806 | if rr.name:sub(-#response.question[1].name, -1) == response.question[1].name then |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
807 | self:remember(rr, response.question[1].type) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
808 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
809 | end |
337 | 810 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
811 | -- retire the query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
812 | local queries = self.active[response.header.id]; |
2082
1381b2071c2e
net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents:
2081
diff
changeset
|
813 | queries[response.question.raw] = nil; |
1381b2071c2e
net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents:
2081
diff
changeset
|
814 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
815 | if not next(queries) then self.active[response.header.id] = nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
816 | if not next(self.active) then self:closeall(); end |
337 | 817 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
818 | -- was the query on the wanted list? |
2301
8a01b0898679
net.dns: Fix for blocking dns lookups to find waiting coroutines correctly (not that we use this in Prosody...)
Matthew Wild <mwild1@gmail.com>
parents:
2300
diff
changeset
|
819 | local q = response.question[1]; |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
820 | local cos = get(self.wanted, q.class, q.type, q.name); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
821 | if cos then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
822 | for co in pairs(cos) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
823 | set(self.yielded, co, q.class, q.type, q.name, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
824 | if coroutine.status(co) == "suspended" then coroutine.resume(co); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
825 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
826 | set(self.wanted, q.class, q.type, q.name, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
827 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
828 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
829 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
830 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
831 | end |
337 | 832 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
833 | return response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
834 | end |
337 | 835 | |
836 | ||
3512
e344b00f2cc9
net.dns: Add 'force' parameter to resolver:feed() to force decoding a packet even if it doesn't match an outstanding request
Matthew Wild <mwild1@gmail.com>
parents:
3360
diff
changeset
|
837 | function resolver:feed(sock, packet, force) |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
838 | --print('receive'); print(self.socket); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
839 | self.time = socket.gettime(); |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
840 | |
3512
e344b00f2cc9
net.dns: Add 'force' parameter to resolver:feed() to force decoding a packet even if it doesn't match an outstanding request
Matthew Wild <mwild1@gmail.com>
parents:
3360
diff
changeset
|
841 | local response = self:decode(packet, force); |
2300
e182b5029ef2
net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents:
2293
diff
changeset
|
842 | if response and self.active[response.header.id] |
e182b5029ef2
net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents:
2293
diff
changeset
|
843 | and self.active[response.header.id][response.question.raw] then |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
844 | --print('received response'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
845 | --self.print(response); |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
846 | |
2300
e182b5029ef2
net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents:
2293
diff
changeset
|
847 | for j,rr in pairs(response.answer) do |
e182b5029ef2
net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents:
2293
diff
changeset
|
848 | self:remember(rr, response.question[1].type); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
849 | end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
850 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
851 | -- retire the query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
852 | local queries = self.active[response.header.id]; |
2300
e182b5029ef2
net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents:
2293
diff
changeset
|
853 | queries[response.question.raw] = nil; |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
854 | if not next(queries) then self.active[response.header.id] = nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
855 | if not next(self.active) then self:closeall(); end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
856 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
857 | -- was the query on the wanted list? |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
858 | local q = response.question[1]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
859 | if q then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
860 | local cos = get(self.wanted, q.class, q.type, q.name); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
861 | if cos then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
862 | for co in pairs(cos) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
863 | set(self.yielded, co, q.class, q.type, q.name, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
864 | if coroutine.status(co) == "suspended" then coroutine.resume(co); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
865 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
866 | set(self.wanted, q.class, q.type, q.name, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
867 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
868 | end |
2741
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2740
diff
changeset
|
869 | end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
870 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
871 | return response; |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
872 | end |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
873 | |
3326
fb95015bc646
net.dns, net.adns: Update resolver:cancel() API so that a table doesn't need to be created for each cancellation internal to net.dns
Matthew Wild <mwild1@gmail.com>
parents:
3325
diff
changeset
|
874 | function resolver:cancel(qclass, qtype, qname, co, call_handler) |
fb95015bc646
net.dns, net.adns: Update resolver:cancel() API so that a table doesn't need to be created for each cancellation internal to net.dns
Matthew Wild <mwild1@gmail.com>
parents:
3325
diff
changeset
|
875 | local cos = get(self.wanted, qclass, qtype, qname); |
1202
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
894
diff
changeset
|
876 | if cos then |
3325
b3117a1da834
net.dns, net.adns: Move coroutine-calling logic into resolver:cancel()
Matthew Wild <mwild1@gmail.com>
parents:
3324
diff
changeset
|
877 | if call_handler then |
3326
fb95015bc646
net.dns, net.adns: Update resolver:cancel() API so that a table doesn't need to be created for each cancellation internal to net.dns
Matthew Wild <mwild1@gmail.com>
parents:
3325
diff
changeset
|
878 | coroutine.resume(co); |
3325
b3117a1da834
net.dns, net.adns: Move coroutine-calling logic into resolver:cancel()
Matthew Wild <mwild1@gmail.com>
parents:
3324
diff
changeset
|
879 | end |
3326
fb95015bc646
net.dns, net.adns: Update resolver:cancel() API so that a table doesn't need to be created for each cancellation internal to net.dns
Matthew Wild <mwild1@gmail.com>
parents:
3325
diff
changeset
|
880 | cos[co] = nil; |
1202
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
894
diff
changeset
|
881 | end |
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
894
diff
changeset
|
882 | end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
883 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
884 | function resolver:pulse() -- - - - - - - - - - - - - - - - - - - - - pulse |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
885 | --print(':pulse'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
886 | while self:receive() do end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
887 | if not next(self.active) then return nil; end |
337 | 888 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
889 | self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
890 | for id,queries in pairs(self.active) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
891 | for question,o in pairs(queries) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
892 | if self.time >= o.retry then |
337 | 893 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
894 | o.server = o.server + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
895 | if o.server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
896 | o.server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
897 | o.delay = o.delay + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
898 | end |
337 | 899 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
900 | if o.delay > #self.delays then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
901 | --print('timeout'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
902 | queries[question] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
903 | if not next(queries) then self.active[id] = nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
904 | if not next(self.active) then return nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
905 | else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
906 | --print('retry', o.server, o.delay); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
907 | local _a = self.socket[o.server]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
908 | if _a then _a:send(o.packet); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
909 | o.retry = self.time + self.delays[o.delay]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
910 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
911 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
912 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
913 | end |
337 | 914 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
915 | if next(self.active) then return true; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
916 | return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
917 | end |
337 | 918 | |
919 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
920 | function resolver:lookup(qname, qtype, qclass) -- - - - - - - - - - lookup |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
921 | self:query (qname, qtype, qclass) |
3049
e54774bd73a7
net/dns: Fix socket.select timeout.
Brian Cully <bjc@junctionnetworks.com>
parents:
2741
diff
changeset
|
922 | while self:pulse() do |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
923 | local recvt = {} |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
924 | for i, s in ipairs(self.socket) do |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
925 | recvt[i] = s |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
926 | end |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
927 | socket.select(recvt, nil, 4) |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
928 | end |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
929 | --print(self.cache); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
930 | return self:peek(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
931 | end |
337 | 932 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
933 | function resolver:lookupex(handler, qname, qtype, qclass) -- - - - - - - - - - lookup |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
934 | return self:peek(qname, qtype, qclass) or self:query(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
935 | end |
337 | 936 | |
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
937 | function resolver:tohostname(ip) |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
938 | return dns.lookup(ip:gsub("(%d+)%.(%d+)%.(%d+)%.(%d+)", "%4.%3.%2.%1.in-addr.arpa."), "PTR"); |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
939 | end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
940 | |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
941 | --print ---------------------------------------------------------------- print |
337 | 942 | |
943 | ||
944 | local hints = { -- - - - - - - - - - - - - - - - - - - - - - - - - - - hints | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
945 | qr = { [0]='query', 'response' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
946 | opcode = { [0]='query', 'inverse query', 'server status request' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
947 | aa = { [0]='non-authoritative', 'authoritative' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
948 | tc = { [0]='complete', 'truncated' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
949 | rd = { [0]='recursion not desired', 'recursion desired' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
950 | ra = { [0]='recursion not available', 'recursion available' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
951 | z = { [0]='(reserved)' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
952 | rcode = { [0]='no error', 'format error', 'server failure', 'name error', 'not implemented' }, |
337 | 953 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
954 | type = dns.type, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
955 | class = dns.class |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
956 | }; |
337 | 957 | |
958 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
959 | local function hint(p, s) -- - - - - - - - - - - - - - - - - - - - - - hint |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
960 | return (hints[s] and hints[s][p[s]]) or ''; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
961 | end |
337 | 962 | |
963 | ||
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
964 | function resolver.print(response) -- - - - - - - - - - - - - resolver.print |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
965 | for s,s in pairs { 'id', 'qr', 'opcode', 'aa', 'tc', 'rd', 'ra', 'z', |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
966 | 'rcode', 'qdcount', 'ancount', 'nscount', 'arcount' } do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
967 | print( string.format('%-30s', 'header.'..s), response.header[s], hint(response.header, s) ); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
968 | end |
337 | 969 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
970 | for i,question in ipairs(response.question) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
971 | print(string.format ('question[%i].name ', i), question.name); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
972 | print(string.format ('question[%i].type ', i), question.type); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
973 | print(string.format ('question[%i].class ', i), question.class); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
974 | end |
337 | 975 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
976 | local common = { name=1, type=1, class=1, ttl=1, rdlength=1, rdata=1 }; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
977 | local tmp; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
978 | for s,s in pairs({'answer', 'authority', 'additional'}) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
979 | for i,rr in pairs(response[s]) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
980 | for j,t in pairs({ 'name', 'type', 'class', 'ttl', 'rdlength' }) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
981 | tmp = string.format('%s[%i].%s', s, i, t); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
982 | print(string.format('%-30s', tmp), rr[t], hint(rr, t)); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
983 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
984 | for j,t in pairs(rr) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
985 | if not common[j] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
986 | tmp = string.format('%s[%i].%s', s, i, j); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
987 | print(string.format('%-30s %s', tostring(tmp), tostring(t))); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
988 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
989 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
990 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
991 | end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
992 | end |
337 | 993 | |
994 | ||
995 | -- module api ------------------------------------------------------ module api | |
996 | ||
997 | ||
998 | function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
999 | -- this function seems to be redundant with resolver.new () |
337 | 1000 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1001 | local r = { active = {}, cache = {}, unsorted = {}, wanted = {}, yielded = {}, best_server = 1 }; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1002 | setmetatable (r, resolver); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1003 | setmetatable (r.cache, cache_metatable); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1004 | setmetatable (r.unsorted, { __mode = 'kv' }); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1005 | return r; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1006 | end |
337 | 1007 | |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1008 | local _resolver = dns.resolver(); |
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1009 | dns._resolver = _resolver; |
337 | 1010 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1011 | function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1012 | return _resolver:lookup(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1013 | end |
337 | 1014 | |
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1015 | function dns.tohostname(...) |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1016 | return _resolver:tohostname(...); |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1017 | end |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1018 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1019 | function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1020 | return _resolver:purge(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1021 | end |
337 | 1022 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1023 | function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1024 | return _resolver:peek(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1025 | end |
337 | 1026 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1027 | function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1028 | return _resolver:query(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1029 | end |
337 | 1030 | |
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1031 | function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1032 | return _resolver:feed(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1033 | end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1034 | |
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1035 | function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1036 | return _resolver:cancel(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1037 | end |
337 | 1038 | |
3328
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1039 | function dns.settimeout(...) |
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1040 | return _resolver:settimeout(...); |
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1041 | end |
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1042 | |
2578
61e5eff54415
net.dns, net.adns: Changed dns:socket_wrapper_set to dns.socket_wrapper_set for consistency.
Waqas Hussain <waqas20@gmail.com>
parents:
2575
diff
changeset
|
1043 | function dns.socket_wrapper_set(...) -- - - - - - - - - socket_wrapper_set |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1044 | return _resolver:socket_wrapper_set(...); |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1045 | end |
337 | 1046 | |
2070
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1047 | return dns; |