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net/dns.lua @ 6391:4d334d00c635
plugins/muc/muc.lib: Add instant room support
author | daurnimator <quae@daurnimator.com> |
---|---|
date | Fri, 05 Sep 2014 11:19:16 -0400 |
parent | 6312:1940a014aeca |
child | 6464:737c81bd898e |
rev | line source |
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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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16 local timer = require "util.timer"; |
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17 local new_ip = require "util.ip".new_ip; |
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18 |
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19 local _, windows = pcall(require, "util.windows"); |
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20 local is_windows = (_ and windows) or os.getenv("WINDIR"); |
337 | 21 |
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22 local coroutine, io, math, string, table = |
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23 coroutine, io, math, string, table; |
337 | 24 |
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25 local ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select, type= |
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26 ipairs, next, pairs, print, setmetatable, tostring, assert, error, unpack, select, type; |
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27 |
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28 local ztact = { -- public domain 20080404 lua@ztact.com |
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29 get = function(parent, ...) |
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30 local len = select('#', ...); |
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31 for i=1,len do |
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32 parent = parent[select(i, ...)]; |
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33 if parent == nil then break; end |
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34 end |
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35 return parent; |
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36 end; |
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37 set = function(parent, ...) |
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38 local len = select('#', ...); |
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39 local key, value = select(len-1, ...); |
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40 local cutpoint, cutkey; |
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41 |
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42 for i=1,len-2 do |
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43 local key = select (i, ...) |
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44 local child = parent[key] |
337 | 45 |
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46 if value == nil then |
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47 if child == nil then |
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48 return; |
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49 elseif next(child, next(child)) then |
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50 cutpoint = nil; cutkey = nil; |
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51 elseif cutpoint == nil then |
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52 cutpoint = parent; cutkey = key; |
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53 end |
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54 elseif child == nil then |
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55 child = {}; |
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56 parent[key] = child; |
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57 end |
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58 parent = child |
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59 end |
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60 |
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61 if value == nil and cutpoint then |
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62 cutpoint[cutkey] = nil; |
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63 else |
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64 parent[key] = value; |
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65 return value; |
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66 end |
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67 end; |
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68 }; |
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69 local get, set = ztact.get, ztact.set; |
337 | 70 |
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71 local default_timeout = 15; |
337 | 72 |
73 -------------------------------------------------- module dns | |
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74 module('dns') |
337 | 75 local dns = _M; |
76 | |
77 | |
78 -- dns type & class codes ------------------------------ dns type & class codes | |
79 | |
80 | |
81 local append = table.insert | |
82 | |
83 | |
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84 local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte |
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85 return (i-(i%0x100))/0x100; |
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86 end |
337 | 87 |
88 | |
89 local function augment (t) -- - - - - - - - - - - - - - - - - - - - augment | |
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90 local a = {}; |
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91 for i,s in pairs(t) do |
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92 a[i] = s; |
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93 a[s] = s; |
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94 a[string.lower(s)] = s; |
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95 end |
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96 return a; |
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97 end |
337 | 98 |
99 | |
100 local function encode (t) -- - - - - - - - - - - - - - - - - - - - - encode | |
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101 local code = {}; |
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102 for i,s in pairs(t) do |
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103 local word = string.char(highbyte(i), i%0x100); |
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104 code[i] = word; |
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105 code[s] = word; |
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106 code[string.lower(s)] = word; |
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107 end |
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108 return code; |
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109 end |
337 | 110 |
111 | |
112 dns.types = { | |
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113 'A', 'NS', 'MD', 'MF', 'CNAME', 'SOA', 'MB', 'MG', 'MR', 'NULL', 'WKS', |
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114 'PTR', 'HINFO', 'MINFO', 'MX', 'TXT', |
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115 [ 28] = 'AAAA', [ 29] = 'LOC', [ 33] = 'SRV', |
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116 [252] = 'AXFR', [253] = 'MAILB', [254] = 'MAILA', [255] = '*' }; |
337 | 117 |
118 | |
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119 dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' }; |
337 | 120 |
121 | |
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122 dns.type = augment (dns.types); |
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123 dns.class = augment (dns.classes); |
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124 dns.typecode = encode (dns.types); |
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125 dns.classcode = encode (dns.classes); |
337 | 126 |
127 | |
128 | |
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129 local function standardize(qname, qtype, qclass) -- - - - - - - standardize |
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130 if string.byte(qname, -1) ~= 0x2E then qname = qname..'.'; end |
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131 qname = string.lower(qname); |
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132 return qname, dns.type[qtype or 'A'], dns.class[qclass or 'IN']; |
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133 end |
337 | 134 |
135 | |
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136 local function prune(rrs, time, soft) -- - - - - - - - - - - - - - - prune |
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137 time = time or socket.gettime(); |
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138 for i,rr in pairs(rrs) do |
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139 if rr.tod then |
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140 -- rr.tod = rr.tod - 50 -- accelerated decripitude |
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141 rr.ttl = math.floor(rr.tod - time); |
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142 if rr.ttl <= 0 then |
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143 table.remove(rrs, i); |
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144 return prune(rrs, time, soft); -- Re-iterate |
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145 end |
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146 elseif soft == 'soft' then -- What is this? I forget! |
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147 assert(rr.ttl == 0); |
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148 rrs[i] = nil; |
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149 end |
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150 end |
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151 end |
337 | 152 |
153 | |
154 -- metatables & co. ------------------------------------------ metatables & co. | |
155 | |
156 | |
2069
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157 local resolver = {}; |
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158 resolver.__index = resolver; |
337 | 159 |
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160 resolver.timeout = default_timeout; |
337 | 161 |
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162 local function default_rr_tostring(rr) |
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163 local rr_val = rr.type and rr[rr.type:lower()]; |
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164 if type(rr_val) ~= "string" then |
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165 return "<UNKNOWN RDATA TYPE>"; |
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166 end |
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167 return rr_val; |
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168 end |
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169 |
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170 local special_tostrings = { |
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171 LOC = resolver.LOC_tostring; |
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172 MX = function (rr) |
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173 return string.format('%2i %s', rr.pref, rr.mx); |
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174 end; |
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175 SRV = function (rr) |
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176 local s = rr.srv; |
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177 return string.format('%5d %5d %5d %s', s.priority, s.weight, s.port, s.target); |
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178 end; |
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179 }; |
337 | 180 |
2069
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181 local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable |
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182 function rr_metatable.__tostring(rr) |
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183 local rr_string = (special_tostrings[rr.type] or default_rr_tostring)(rr); |
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184 return string.format('%2s %-5s %6i %-28s %s', rr.class, rr.type, rr.ttl, rr.name, rr_string); |
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185 end |
337 | 186 |
187 | |
2069
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188 local rrs_metatable = {}; -- - - - - - - - - - - - - - - - - - rrs_metatable |
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189 function rrs_metatable.__tostring(rrs) |
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190 local t = {}; |
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191 for i,rr in pairs(rrs) do |
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192 append(t, tostring(rr)..'\n'); |
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193 end |
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194 return table.concat(t); |
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195 end |
337 | 196 |
197 | |
2069
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198 local cache_metatable = {}; -- - - - - - - - - - - - - - - - cache_metatable |
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199 function cache_metatable.__tostring(cache) |
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200 local time = socket.gettime(); |
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201 local t = {}; |
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202 for class,types in pairs(cache) do |
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203 for type,names in pairs(types) do |
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204 for name,rrs in pairs(names) do |
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205 prune(rrs, time); |
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206 append(t, tostring(rrs)); |
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207 end |
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208 end |
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209 end |
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210 return table.concat(t); |
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211 end |
337 | 212 |
213 | |
2069
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214 function resolver:new() -- - - - - - - - - - - - - - - - - - - - - resolver |
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215 local r = { active = {}, cache = {}, unsorted = {} }; |
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216 setmetatable(r, resolver); |
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217 setmetatable(r.cache, cache_metatable); |
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218 setmetatable(r.unsorted, { __mode = 'kv' }); |
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219 return r; |
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220 end |
337 | 221 |
222 | |
223 -- packet layer -------------------------------------------------- packet layer | |
224 | |
225 | |
2069
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|
226 function dns.random(...) -- - - - - - - - - - - - - - - - - - - dns.random |
5340
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Kim Alvefur <zash@zash.se>
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|
227 math.randomseed(math.floor(10000*socket.gettime()) % 0x100000000); |
2069
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|
228 dns.random = math.random; |
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|
229 return dns.random(...); |
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230 end |
337 | 231 |
232 | |
2069
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233 local function encodeHeader(o) -- - - - - - - - - - - - - - - encodeHeader |
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|
234 o = o or {}; |
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235 o.id = o.id or dns.random(0, 0xffff); -- 16b (random) id |
337 | 236 |
2069
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237 o.rd = o.rd or 1; -- 1b 1 recursion desired |
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|
238 o.tc = o.tc or 0; -- 1b 1 truncated response |
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239 o.aa = o.aa or 0; -- 1b 1 authoritative response |
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240 o.opcode = o.opcode or 0; -- 4b 0 query |
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241 -- 1 inverse query |
337 | 242 -- 2 server status request |
243 -- 3-15 reserved | |
2069
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244 o.qr = o.qr or 0; -- 1b 0 query, 1 response |
337 | 245 |
2069
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246 o.rcode = o.rcode or 0; -- 4b 0 no error |
337 | 247 -- 1 format error |
248 -- 2 server failure | |
249 -- 3 name error | |
250 -- 4 not implemented | |
251 -- 5 refused | |
252 -- 6-15 reserved | |
2069
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253 o.z = o.z or 0; -- 3b 0 resvered |
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254 o.ra = o.ra or 0; -- 1b 1 recursion available |
337 | 255 |
2069
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256 o.qdcount = o.qdcount or 1; -- 16b number of question RRs |
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257 o.ancount = o.ancount or 0; -- 16b number of answers RRs |
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258 o.nscount = o.nscount or 0; -- 16b number of nameservers RRs |
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259 o.arcount = o.arcount or 0; -- 16b number of additional RRs |
337 | 260 |
2069
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261 -- string.char() rounds, so prevent roundup with -0.4999 |
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|
262 local header = string.char( |
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|
263 highbyte(o.id), o.id %0x100, |
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|
264 o.rd + 2*o.tc + 4*o.aa + 8*o.opcode + 128*o.qr, |
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265 o.rcode + 16*o.z + 128*o.ra, |
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266 highbyte(o.qdcount), o.qdcount %0x100, |
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267 highbyte(o.ancount), o.ancount %0x100, |
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|
268 highbyte(o.nscount), o.nscount %0x100, |
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269 highbyte(o.arcount), o.arcount %0x100 |
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270 ); |
337 | 271 |
2069
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272 return header, o.id; |
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273 end |
337 | 274 |
275 | |
2069
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276 local function encodeName(name) -- - - - - - - - - - - - - - - - encodeName |
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|
277 local t = {}; |
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|
278 for part in string.gmatch(name, '[^.]+') do |
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|
279 append(t, string.char(string.len(part))); |
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280 append(t, part); |
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281 end |
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282 append(t, string.char(0)); |
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283 return table.concat(t); |
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284 end |
337 | 285 |
286 | |
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287 local function encodeQuestion(qname, qtype, qclass) -- - - - encodeQuestion |
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288 qname = encodeName(qname); |
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289 qtype = dns.typecode[qtype or 'a']; |
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290 qclass = dns.classcode[qclass or 'in']; |
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291 return qname..qtype..qclass; |
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292 end |
337 | 293 |
294 | |
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295 function resolver:byte(len) -- - - - - - - - - - - - - - - - - - - - - byte |
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296 len = len or 1; |
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297 local offset = self.offset; |
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298 local last = offset + len - 1; |
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299 if last > #self.packet then |
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300 error(string.format('out of bounds: %i>%i', last, #self.packet)); |
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301 end |
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302 self.offset = offset + len; |
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303 return string.byte(self.packet, offset, last); |
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304 end |
337 | 305 |
306 | |
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307 function resolver:word() -- - - - - - - - - - - - - - - - - - - - - - word |
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308 local b1, b2 = self:byte(2); |
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309 return 0x100*b1 + b2; |
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310 end |
337 | 311 |
312 | |
313 function resolver:dword () -- - - - - - - - - - - - - - - - - - - - - dword | |
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314 local b1, b2, b3, b4 = self:byte(4); |
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315 --print('dword', b1, b2, b3, b4); |
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316 return 0x1000000*b1 + 0x10000*b2 + 0x100*b3 + b4; |
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317 end |
337 | 318 |
319 | |
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320 function resolver:sub(len) -- - - - - - - - - - - - - - - - - - - - - - sub |
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321 len = len or 1; |
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322 local s = string.sub(self.packet, self.offset, self.offset + len - 1); |
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323 self.offset = self.offset + len; |
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324 return s; |
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325 end |
337 | 326 |
327 | |
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328 function resolver:header(force) -- - - - - - - - - - - - - - - - - - header |
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329 local id = self:word(); |
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330 --print(string.format(':header id %x', id)); |
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331 if not self.active[id] and not force then return nil; end |
337 | 332 |
2069
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333 local h = { id = id }; |
337 | 334 |
2069
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335 local b1, b2 = self:byte(2); |
337 | 336 |
2069
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337 h.rd = b1 %2; |
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338 h.tc = b1 /2%2; |
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339 h.aa = b1 /4%2; |
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340 h.opcode = b1 /8%16; |
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341 h.qr = b1 /128; |
337 | 342 |
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343 h.rcode = b2 %16; |
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344 h.z = b2 /16%8; |
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345 h.ra = b2 /128; |
337 | 346 |
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347 h.qdcount = self:word(); |
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348 h.ancount = self:word(); |
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349 h.nscount = self:word(); |
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350 h.arcount = self:word(); |
337 | 351 |
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352 for k,v in pairs(h) do h[k] = v-v%1; end |
337 | 353 |
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354 return h; |
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355 end |
337 | 356 |
357 | |
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358 function resolver:name() -- - - - - - - - - - - - - - - - - - - - - - name |
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359 local remember, pointers = nil, 0; |
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360 local len = self:byte(); |
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361 local n = {}; |
4422
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Florian Zeitz <florob@babelmonkeys.de>
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362 if len == 0 then return "." end -- Root label |
2069
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363 while len > 0 do |
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364 if len >= 0xc0 then -- name is "compressed" |
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365 pointers = pointers + 1; |
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366 if pointers >= 20 then error('dns error: 20 pointers'); end; |
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367 local offset = ((len-0xc0)*0x100) + self:byte(); |
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368 remember = remember or self.offset; |
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369 self.offset = offset + 1; -- +1 for lua |
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370 else -- name is not compressed |
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371 append(n, self:sub(len)..'.'); |
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372 end |
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373 len = self:byte(); |
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374 end |
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375 self.offset = remember or self.offset; |
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376 return table.concat(n); |
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377 end |
337 | 378 |
379 | |
2069
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380 function resolver:question() -- - - - - - - - - - - - - - - - - - question |
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381 local q = {}; |
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382 q.name = self:name(); |
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383 q.type = dns.type[self:word()]; |
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384 q.class = dns.class[self:word()]; |
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385 return q; |
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386 end |
337 | 387 |
388 | |
2069
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389 function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A |
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390 local b1, b2, b3, b4 = self:byte(4); |
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391 rr.a = string.format('%i.%i.%i.%i', b1, b2, b3, b4); |
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392 end |
337 | 393 |
4267
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net.dns: Support for resolving AAAA records
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|
394 function resolver:AAAA(rr) |
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395 local addr = {}; |
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396 for i = 1, rr.rdlength, 2 do |
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397 local b1, b2 = self:byte(2); |
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398 table.insert(addr, ("%02x%02x"):format(b1, b2)); |
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399 end |
4373 | 400 addr = table.concat(addr, ":"):gsub("%f[%x]0+(%x)","%1"); |
401 local zeros = {}; | |
402 for item in addr:gmatch(":[0:]+:") do | |
403 table.insert(zeros, item) | |
404 end | |
405 if #zeros == 0 then | |
406 rr.aaaa = addr; | |
407 return | |
408 elseif #zeros > 1 then | |
409 table.sort(zeros, function(a, b) return #a > #b end); | |
410 end | |
411 rr.aaaa = addr:gsub(zeros[1], "::", 1):gsub("^0::", "::"):gsub("::0$", "::"); | |
4267
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412 end |
337 | 413 |
2069
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414 function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME |
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415 rr.cname = self:name(); |
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416 end |
337 | 417 |
418 | |
2069
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419 function resolver:MX(rr) -- - - - - - - - - - - - - - - - - - - - - - - MX |
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420 rr.pref = self:word(); |
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421 rr.mx = self:name(); |
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422 end |
337 | 423 |
424 | |
2069
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425 function resolver:LOC_nibble_power() -- - - - - - - - - - LOC_nibble_power |
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|
426 local b = self:byte(); |
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
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|
427 --print('nibbles', ((b-(b%0x10))/0x10), (b%0x10)); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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|
428 return ((b-(b%0x10))/0x10) * (10^(b%0x10)); |
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parents:
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diff
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|
429 end |
337 | 430 |
431 | |
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
432 function resolver:LOC(rr) -- - - - - - - - - - - - - - - - - - - - - - LOC |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
433 rr.version = self:byte(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
434 if rr.version == 0 then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
435 rr.loc = rr.loc or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
436 rr.loc.size = self:LOC_nibble_power(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
437 rr.loc.horiz_pre = self:LOC_nibble_power(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
438 rr.loc.vert_pre = self:LOC_nibble_power(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
439 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
|
440 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
|
441 rr.loc.altitude = self:dword(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
442 end |
72357b1c6d88
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parents:
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diff
changeset
|
443 end |
337 | 444 |
445 | |
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
446 local function LOC_tostring_degrees(f, pos, neg) -- - - - - - - - - - - - - |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
447 f = f - 0x80000000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
448 if f < 0 then pos = neg; f = -f; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
449 local deg, min, msec; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
450 msec = f%60000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
451 f = (f-msec)/60000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
452 min = f%60; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
453 deg = (f-min)/60; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
454 return string.format('%3d %2d %2.3f %s', deg, min, msec/1000, pos); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
455 end |
337 | 456 |
457 | |
2069
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
458 function resolver.LOC_tostring(rr) -- - - - - - - - - - - - - LOC_tostring |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
459 local t = {}; |
337 | 460 |
2069
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
461 --[[ |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
462 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
|
463 append(t, string.format('%4s%-10s: %12.0f\n', '', name, rr.loc[name])); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
464 end |
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parents:
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diff
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|
465 --]] |
337 | 466 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
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parents:
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diff
changeset
|
467 append(t, string.format( |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
468 '%s %s %.2fm %.2fm %.2fm %.2fm', |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
469 LOC_tostring_degrees (rr.loc.latitude, 'N', 'S'), |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
470 LOC_tostring_degrees (rr.loc.longitude, 'E', 'W'), |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
471 (rr.loc.altitude - 10000000) / 100, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
472 rr.loc.size / 100, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
473 rr.loc.horiz_pre / 100, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
474 rr.loc.vert_pre / 100 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
475 )); |
337 | 476 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
477 return table.concat(t); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
478 end |
337 | 479 |
480 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
481 function resolver:NS(rr) -- - - - - - - - - - - - - - - - - - - - - - - NS |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
482 rr.ns = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
483 end |
337 | 484 |
485 | |
2069
72357b1c6d88
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parents:
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diff
changeset
|
486 function resolver:SOA(rr) -- - - - - - - - - - - - - - - - - - - - - - SOA |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
487 end |
337 | 488 |
489 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
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parents:
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diff
changeset
|
490 function resolver:SRV(rr) -- - - - - - - - - - - - - - - - - - - - - - SRV |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
491 rr.srv = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
492 rr.srv.priority = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
493 rr.srv.weight = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
494 rr.srv.port = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
495 rr.srv.target = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
496 end |
337 | 497 |
3513
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
498 function resolver:PTR(rr) |
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
499 rr.ptr = self:name(); |
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
500 end |
337 | 501 |
2069
72357b1c6d88
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parents:
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diff
changeset
|
502 function resolver:TXT(rr) -- - - - - - - - - - - - - - - - - - - - - - TXT |
4251 | 503 rr.txt = self:sub (self:byte()); |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
504 end |
337 | 505 |
506 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
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parents:
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diff
changeset
|
507 function resolver:rr() -- - - - - - - - - - - - - - - - - - - - - - - - rr |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
508 local rr = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
509 setmetatable(rr, rr_metatable); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
510 rr.name = self:name(self); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
511 rr.type = dns.type[self:word()] or rr.type; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
512 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
|
513 rr.ttl = 0x10000*self:word() + self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
514 rr.rdlength = self:word(); |
337 | 515 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
516 if rr.ttl <= 0 then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
517 rr.tod = self.time + 30; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
518 else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
519 rr.tod = self.time + rr.ttl; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
520 end |
337 | 521 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
522 local remember = self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
523 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
|
524 if rr_parser then rr_parser(self, rr); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
525 self.offset = remember; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
526 rr.rdata = self:sub(rr.rdlength); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
527 return rr; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
528 end |
337 | 529 |
530 | |
531 function resolver:rrs (count) -- - - - - - - - - - - - - - - - - - - - - rrs | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
532 local rrs = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
533 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
|
534 return rrs; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
535 end |
337 | 536 |
537 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
538 function resolver:decode(packet, force) -- - - - - - - - - - - - - - decode |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
539 self.packet, self.offset = packet, 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
540 local header = self:header(force); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
541 if not header then return nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
542 local response = { header = header }; |
337 | 543 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
544 response.question = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
545 local offset = self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
546 for i = 1,response.header.qdcount do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
547 append(response.question, self:question()); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
548 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
549 response.question.raw = string.sub(self.packet, offset, self.offset - 1); |
337 | 550 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
551 if not force then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
552 if not self.active[response.header.id] or not self.active[response.header.id][response.question.raw] then |
5266
5c3a3ef6b769
net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents:
4422
diff
changeset
|
553 self.active[response.header.id] = nil; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
554 return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
555 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
556 end |
337 | 557 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
558 response.answer = self:rrs(response.header.ancount); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
559 response.authority = self:rrs(response.header.nscount); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
560 response.additional = self:rrs(response.header.arcount); |
337 | 561 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
562 return response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
563 end |
337 | 564 |
565 | |
566 -- socket layer -------------------------------------------------- socket layer | |
567 | |
568 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
569 resolver.delays = { 1, 3 }; |
337 | 570 |
571 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
572 function resolver:addnameserver(address) -- - - - - - - - - - addnameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
573 self.server = self.server or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
574 append(self.server, address); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
575 end |
337 | 576 |
577 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
578 function resolver:setnameserver(address) -- - - - - - - - - - setnameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
579 self.server = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
580 self:addnameserver(address); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
581 end |
337 | 582 |
583 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
584 function resolver:adddefaultnameservers() -- - - - - adddefaultnameservers |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
585 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
|
586 if windows and windows.get_nameservers then |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
587 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
|
588 self:addnameserver(server); |
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 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
591 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
|
592 -- 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
|
593 self:addnameserver("208.67.222.222"); |
2742
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2741
diff
changeset
|
594 self:addnameserver("208.67.220.220"); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
595 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
596 else -- posix |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
597 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
|
598 if resolv_conf then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
599 for line in resolv_conf:lines() do |
2741
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
|
600 line = line:gsub("#.*$", "") |
5705
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
601 :match('^%s*nameserver%s+([%x:%.]*)%s*$'); |
2741
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
|
602 if line then |
5705
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
603 local ip = new_ip(line); |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
604 if ip then |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
605 self:addnameserver(ip.addr); |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
606 end |
2741
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
|
607 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
608 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
609 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
610 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
|
611 -- 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
|
612 self:addnameserver("127.0.0.1"); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
613 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
614 end |
399
93b6587d9afb
Added temporary fix for srv on windows: using opendns nameservers
Waqas Hussain <waqas20@gmail.com>
parents:
379
diff
changeset
|
615 end |
337 | 616 |
617 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
618 function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
619 self.socket = self.socket or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
620 self.socketset = self.socketset or {}; |
337 | 621 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
622 local sock = self.socket[servernum]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
623 if sock then return sock; end |
337 | 624 |
3954
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
625 local err; |
5705
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
626 local peer = self.server[servernum]; |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
627 if peer:find(":") then |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
628 sock, err = socket.udp6(); |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
629 else |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
630 sock, err = socket.udp(); |
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
631 end |
5730
411e9e7d8035
net.dns, net.adns: Make sure errors from net.server are propagated (thanks asterix)
Kim Alvefur <zash@zash.se>
parents:
5566
diff
changeset
|
632 if sock and self.socket_wrapper then sock, err = self.socket_wrapper(sock, self); end |
3954
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
633 if not sock then |
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
634 return nil, err; |
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
635 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
636 sock:settimeout(0); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
637 -- 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
|
638 sock:setsockname('*', 0); |
5705
6eebd5808fbc
net.dns: Support IPv6 addresses in resolv.conf
Florian Zeitz <florob@babelmonkeys.de>
parents:
5566
diff
changeset
|
639 sock:setpeername(peer, 53); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
640 self.socket[servernum] = sock; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
641 self.socketset[sock] = servernum; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
642 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
|
643 end |
337 | 644 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
645 function resolver:voidsocket(sock) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
646 if self.socket[sock] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
647 self.socketset[self.socket[sock]] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
648 self.socket[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
649 elseif self.socketset[sock] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
650 self.socket[self.socketset[sock]] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
651 self.socketset[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
652 end |
5267
a2080e5c4eda
net.dns: Close voided sockets, so they don't stay in net.server
Kim Alvefur <zash@zash.se>
parents:
5266
diff
changeset
|
653 sock:close(); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
654 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
655 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
656 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
|
657 self.socket_wrapper = func; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
658 end |
337 | 659 |
660 | |
661 function resolver:closeall () -- - - - - - - - - - - - - - - - - - closeall | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
662 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
|
663 self.socket[i] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
664 self.socketset[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
665 sock:close(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
666 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
667 end |
337 | 668 |
669 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
670 function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
671 --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
|
672 local qname, qtype, qclass = standardize(rr.name, rr.type, rr.class); |
337 | 673 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
674 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
|
675 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
|
676 local all = get(self.cache, qclass, '*', qname); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
677 --print('remember all', all); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
678 if all then append(all, rr); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
679 end |
337 | 680 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
681 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
|
682 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
|
683 set(self.cache, qclass, type, qname, setmetatable({}, rrs_metatable)); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
684 append(rrs, rr); |
337 | 685 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
686 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
|
687 end |
337 | 688 |
689 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
690 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
|
691 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
|
692 end |
337 | 693 |
694 | |
695 function resolver:peek (qname, qtype, qclass) -- - - - - - - - - - - - peek | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
696 qname, qtype, qclass = standardize(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
697 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
|
698 if not rrs then return nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
699 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
|
700 set(self.cache, qclass, qtype, qname, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
701 return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
702 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
703 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
|
704 return rrs; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
705 end |
337 | 706 |
707 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
708 function resolver:purge(soft) -- - - - - - - - - - - - - - - - - - - purge |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
709 if soft == 'soft' then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
710 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
711 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
|
712 for type,names in pairs(types) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
713 for name,rrs in pairs(names) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
714 prune(rrs, self.time, 'soft') |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
715 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
716 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
717 end |
4400
ac651265766c
net.dns: Preserve metatable on manual cache purge
Matthew Wild <mwild1@gmail.com>
parents:
4373
diff
changeset
|
718 else self.cache = setmetatable({}, cache_metatable); end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
719 end |
337 | 720 |
721 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
722 function resolver:query(qname, qtype, qclass) -- - - - - - - - - - -- query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
723 qname, qtype, qclass = standardize(qname, qtype, qclass) |
337 | 724 |
6288
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
725 local co = coroutine.running(); |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
726 local q = get(self.wanted, qclass, qtype, qname); |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
727 if co and q then |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
728 -- We are already waiting for a reply to an identical query. |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
729 set(self.wanted, qclass, qtype, qname, co, true); |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
730 return true; |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
731 end |
d122420542fb
net.dns: Fix duplicated cache insertions by limiting outstanding queries per name to one
Kim Alvefur <zash@zash.se>
parents:
5730
diff
changeset
|
732 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
733 if not self.server then self:adddefaultnameservers(); end |
337 | 734 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
735 local question = encodeQuestion(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
736 local peek = self:peek (qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
737 if peek then return peek; end |
337 | 738 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
739 local header, id = encodeHeader(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
740 --print ('query id', id, qclass, qtype, qname) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
741 local o = { |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
742 packet = header..question, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
743 server = self.best_server, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
744 delay = 1, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
745 retry = socket.gettime() + self.delays[1] |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
746 }; |
337 | 747 |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
748 -- remember the query |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
749 self.active[id] = self.active[id] or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
750 self.active[id][question] = o; |
337 | 751 |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
752 -- remember which coroutine wants the answer |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
753 if co then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
754 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
|
755 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
|
756 |
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
757 local conn, err = self:getsocket(o.server) |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
758 if not conn then |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
759 return nil, err; |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
760 end |
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
|
761 conn:send (o.packet) |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5731
diff
changeset
|
762 |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
763 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
|
764 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
|
765 local i = 1; |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
766 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
|
767 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
|
768 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
|
769 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
|
770 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
|
771 o.server = self.best_server; |
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
772 conn, err = self:getsocket(o.server); |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
773 if conn then |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
774 conn:send(o.packet); |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
775 return self.timeout; |
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
776 end |
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
|
777 end |
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
778 -- Tried everything, failed |
6309
b6f76a52eb36
net.dns: Ensure all pending requests get notified of a timeout when looking up a record (fix for d122420542fb)
Matthew Wild <mwild1@gmail.com>
parents:
6288
diff
changeset
|
779 self:cancel(qclass, qtype, qname); |
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
|
780 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
|
781 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
|
782 end |
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
783 return true; |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
784 end |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
785 |
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
|
786 function resolver:servfail(sock) |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
787 -- Resend all queries for this server |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
788 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
789 local num = self.socketset[sock] |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
790 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
791 -- Socket is dead now |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
792 self:voidsocket(sock); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
793 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
794 -- 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
|
795 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
796 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
|
797 for question,o in pairs(queries) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
798 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
|
799 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
|
800 if o.server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
801 o.server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
802 end |
337 | 803 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
804 o.retries = (o.retries or 0) + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
805 if o.retries >= #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
806 --print('timeout'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
807 queries[question] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
808 else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
809 local _a = self:getsocket(o.server); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
810 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
|
811 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
812 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
813 end |
5266
5c3a3ef6b769
net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents:
4422
diff
changeset
|
814 if next(queries) == nil then |
5c3a3ef6b769
net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents:
4422
diff
changeset
|
815 self.active[id] = nil; |
5c3a3ef6b769
net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents:
4422
diff
changeset
|
816 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
817 end |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
818 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
819 if num == self.best_server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
820 self.best_server = self.best_server + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
821 if self.best_server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
822 -- Exhausted all servers, try first again |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
823 self.best_server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
824 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
825 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
|
826 end |
337 | 827 |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
828 function resolver:settimeout(seconds) |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
829 self.timeout = seconds; |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
830 end |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
831 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
832 function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
833 --print('receive'); print(self.socket); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
834 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
835 rset = rset or self.socket; |
337 | 836 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
837 local response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
838 for i,sock in pairs(rset) do |
337 | 839 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
840 if self.socketset[sock] then |
2619
04158baefa34
net.dns: Update for new socket API
Matthew Wild <mwild1@gmail.com>
parents:
2578
diff
changeset
|
841 local packet = sock:receive(); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
842 if packet then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
843 response = self:decode(packet); |
2278
8c10f13c0c20
modulemanager, net.dns: Remove trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2082
diff
changeset
|
844 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:
2069
diff
changeset
|
845 and self.active[response.header.id][response.question.raw] then |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
846 --print('received response'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
847 --self.print(response); |
337 | 848 |
2082
1381b2071c2e
net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents:
2081
diff
changeset
|
849 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
|
850 if rr.name:sub(-#response.question[1].name, -1) == response.question[1].name then |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
851 self:remember(rr, response.question[1].type) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
852 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
853 end |
337 | 854 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
855 -- retire the query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
856 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
|
857 queries[response.question.raw] = nil; |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5731
diff
changeset
|
858 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
859 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
|
860 if not next(self.active) then self:closeall(); end |
337 | 861 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
862 -- 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
|
863 local q = response.question[1]; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
864 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
|
865 if cos then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
866 for co in pairs(cos) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
867 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
|
868 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
869 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
|
870 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
871 end |
5776
bd0ff8ae98a8
Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents:
5731
diff
changeset
|
872 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
873 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
874 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
875 end |
337 | 876 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
877 return response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
878 end |
337 | 879 |
880 | |
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
|
881 function resolver:feed(sock, packet, force) |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
882 --print('receive'); print(self.socket); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
883 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
|
884 |
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
|
885 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:
2278
diff
changeset
|
886 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:
2278
diff
changeset
|
887 and self.active[response.header.id][response.question.raw] then |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
888 --print('received response'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
889 --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
|
890 |
2300
e182b5029ef2
net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents:
2278
diff
changeset
|
891 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:
2278
diff
changeset
|
892 self:remember(rr, response.question[1].type); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
893 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
894 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
895 -- retire the query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
896 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:
2278
diff
changeset
|
897 queries[response.question.raw] = nil; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
898 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
|
899 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
|
900 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
901 -- was the query on the wanted list? |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
902 local q = response.question[1]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
903 if q then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
904 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
|
905 if cos then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
906 for co in pairs(cos) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
907 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
|
908 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
909 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
|
910 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
911 end |
2742
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2741
diff
changeset
|
912 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
913 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
914 return response; |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
915 end |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
916 |
6309
b6f76a52eb36
net.dns: Ensure all pending requests get notified of a timeout when looking up a record (fix for d122420542fb)
Matthew Wild <mwild1@gmail.com>
parents:
6288
diff
changeset
|
917 function resolver:cancel(qclass, qtype, qname) |
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
|
918 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:
896
diff
changeset
|
919 if cos then |
6309
b6f76a52eb36
net.dns: Ensure all pending requests get notified of a timeout when looking up a record (fix for d122420542fb)
Matthew Wild <mwild1@gmail.com>
parents:
6288
diff
changeset
|
920 for co in pairs(cos) do |
b6f76a52eb36
net.dns: Ensure all pending requests get notified of a timeout when looking up a record (fix for d122420542fb)
Matthew Wild <mwild1@gmail.com>
parents:
6288
diff
changeset
|
921 if coroutine.status(co) == "suspended" then coroutine.resume(co); end |
3325
b3117a1da834
net.dns, net.adns: Move coroutine-calling logic into resolver:cancel()
Matthew Wild <mwild1@gmail.com>
parents:
3324
diff
changeset
|
922 end |
6309
b6f76a52eb36
net.dns: Ensure all pending requests get notified of a timeout when looking up a record (fix for d122420542fb)
Matthew Wild <mwild1@gmail.com>
parents:
6288
diff
changeset
|
923 set(self.wanted, qclass, qtype, qname, nil); |
1202
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
896
diff
changeset
|
924 end |
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
896
diff
changeset
|
925 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
926 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
927 function resolver:pulse() -- - - - - - - - - - - - - - - - - - - - - pulse |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
928 --print(':pulse'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
929 while self:receive() do end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
930 if not next(self.active) then return nil; end |
337 | 931 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
932 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
933 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
|
934 for question,o in pairs(queries) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
935 if self.time >= o.retry then |
337 | 936 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
937 o.server = o.server + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
938 if o.server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
939 o.server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
940 o.delay = o.delay + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
941 end |
337 | 942 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
943 if o.delay > #self.delays then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
944 --print('timeout'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
945 queries[question] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
946 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
|
947 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
|
948 else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
949 --print('retry', o.server, o.delay); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
950 local _a = self.socket[o.server]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
951 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
|
952 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
|
953 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
954 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
955 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
956 end |
337 | 957 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
958 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
|
959 return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
960 end |
337 | 961 |
962 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
963 function resolver:lookup(qname, qtype, qclass) -- - - - - - - - - - lookup |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
964 self:query (qname, qtype, qclass) |
3049
e54774bd73a7
net/dns: Fix socket.select timeout.
Brian Cully <bjc@junctionnetworks.com>
parents:
2742
diff
changeset
|
965 while self:pulse() do |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
966 local recvt = {} |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
967 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
|
968 recvt[i] = s |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
969 end |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
970 socket.select(recvt, nil, 4) |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
971 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
972 --print(self.cache); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
973 return self:peek(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
974 end |
337 | 975 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
976 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
|
977 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
|
978 end |
337 | 979 |
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
980 function resolver:tohostname(ip) |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
981 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
|
982 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
983 |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
984 --print ---------------------------------------------------------------- print |
337 | 985 |
986 | |
987 local hints = { -- - - - - - - - - - - - - - - - - - - - - - - - - - - hints | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
988 qr = { [0]='query', 'response' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
989 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
|
990 aa = { [0]='non-authoritative', 'authoritative' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
991 tc = { [0]='complete', 'truncated' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
992 rd = { [0]='recursion not desired', 'recursion desired' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
993 ra = { [0]='recursion not available', 'recursion available' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
994 z = { [0]='(reserved)' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
995 rcode = { [0]='no error', 'format error', 'server failure', 'name error', 'not implemented' }, |
337 | 996 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
997 type = dns.type, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
998 class = dns.class |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
999 }; |
337 | 1000 |
1001 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1002 local function hint(p, s) -- - - - - - - - - - - - - - - - - - - - - - hint |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1003 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
|
1004 end |
337 | 1005 |
1006 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1007 function resolver.print(response) -- - - - - - - - - - - - - resolver.print |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1008 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
|
1009 'rcode', 'qdcount', 'ancount', 'nscount', 'arcount' } do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1010 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
|
1011 end |
337 | 1012 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1013 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
|
1014 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
|
1015 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
|
1016 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
|
1017 end |
337 | 1018 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1019 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
|
1020 local tmp; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1021 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
|
1022 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
|
1023 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
|
1024 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
|
1025 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
|
1026 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1027 for j,t in pairs(rr) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1028 if not common[j] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1029 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
|
1030 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
|
1031 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1032 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1033 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1034 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1035 end |
337 | 1036 |
1037 | |
1038 -- module api ------------------------------------------------------ module api | |
1039 | |
1040 | |
1041 function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1042 -- this function seems to be redundant with resolver.new () |
337 | 1043 |
6310
d232bb1bbe1e
net.dns: Remove unused obsolete code
Matthew Wild <mwild1@gmail.com>
parents:
6309
diff
changeset
|
1044 local r = { active = {}, cache = {}, unsorted = {}, wanted = {}, best_server = 1 }; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1045 setmetatable (r, resolver); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1046 setmetatable (r.cache, cache_metatable); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1047 setmetatable (r.unsorted, { __mode = 'kv' }); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1048 return r; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1049 end |
337 | 1050 |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1051 local _resolver = dns.resolver(); |
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1052 dns._resolver = _resolver; |
337 | 1053 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1054 function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1055 return _resolver:lookup(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1056 end |
337 | 1057 |
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1058 function dns.tohostname(...) |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1059 return _resolver:tohostname(...); |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1060 end |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1061 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1062 function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1063 return _resolver:purge(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1064 end |
337 | 1065 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1066 function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1067 return _resolver:peek(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1068 end |
337 | 1069 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1070 function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1071 return _resolver:query(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1072 end |
337 | 1073 |
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1074 function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1075 return _resolver:feed(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1076 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1077 |
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1078 function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1079 return _resolver:cancel(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1080 end |
337 | 1081 |
3328
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1082 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
|
1083 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
|
1084 end |
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1085 |
5566
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1086 function dns.cache() |
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1087 return _resolver.cache; |
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1088 end |
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1089 |
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
|
1090 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
|
1091 return _resolver:socket_wrapper_set(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1092 end |
337 | 1093 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1094 return dns; |