Software / code / prosody
Annotate
net/dns.lua @ 8905:65d1a80d3565
mod_mam: Add coment on how 'complete' works
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 10 Jun 2018 00:14:34 +0200 |
| parent | 8901:eae606b9266c |
| child | 8902:ac21f13798ae |
| child | 8907:b7b960d30eef |
| rev | line source |
|---|---|
|
1523
841d61be198f
Remove version number from copyright headers
Matthew Wild <mwild1@gmail.com>
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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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3324
070c8ba71b76
net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
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16 local timer = require "util.timer"; |
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7054
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
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17 local new_ip = require "util.ip".new_ip; |
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18 |
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0ed6369605bf
net.dns: Updated to use util.windows.get_nameservers for enumerating nameservers on Windows.
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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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936b78e9f399
net.dns: remove unused variable unpack [luacheck]
Anton Shestakov <av6@dwimlabs.net>
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25 local ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type = |
|
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net.dns: remove unused variable unpack [luacheck]
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26 ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type; |
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net.dns: Removed dependency on util.ztact by moving ztact.get/set in.
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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 local _ENV = nil; |
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75 local dns = {}; |
| 337 | 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 | |
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89 local function augment (t, prefix) -- - - - - - - - - - - - - - - - - augment |
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90 local a = {}; |
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91 for i = 1, 0xffff do |
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92 local s = t[i] or ("%s%d"):format(prefix, i); |
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93 a[i] = s; |
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94 a[s] = s; |
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95 a[string.lower(s)] = s; |
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96 end |
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97 return a; |
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98 end |
| 337 | 99 |
| 100 | |
| 101 local function encode (t) -- - - - - - - - - - - - - - - - - - - - - encode | |
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102 local code = {}; |
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103 for i,s in pairs(t) do |
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104 local word = string.char(highbyte(i), i%0x100); |
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105 code[i] = word; |
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106 code[s] = word; |
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107 code[string.lower(s)] = word; |
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108 end |
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109 return code; |
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110 end |
| 337 | 111 |
| 112 | |
| 113 dns.types = { | |
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114 'A', 'NS', 'MD', 'MF', 'CNAME', 'SOA', 'MB', 'MG', 'MR', 'NULL', 'WKS', |
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115 'PTR', 'HINFO', 'MINFO', 'MX', 'TXT', |
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116 [ 28] = 'AAAA', [ 29] = 'LOC', [ 33] = 'SRV', |
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117 [252] = 'AXFR', [253] = 'MAILB', [254] = 'MAILA', [255] = '*' }; |
| 337 | 118 |
| 119 | |
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120 dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' }; |
| 337 | 121 |
| 122 | |
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123 dns.type = augment (dns.types, "TYPE"); |
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124 dns.class = augment (dns.classes, "CLASS"); |
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125 dns.typecode = encode (dns.types); |
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126 dns.classcode = encode (dns.classes); |
| 337 | 127 |
| 128 | |
| 129 | |
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130 local function standardize(qname, qtype, qclass) -- - - - - - - standardize |
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131 if string.byte(qname, -1) ~= 0x2E then qname = qname..'.'; end |
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132 qname = string.lower(qname); |
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133 return qname, dns.type[qtype or 'A'], dns.class[qclass or 'IN']; |
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134 end |
| 337 | 135 |
| 136 | |
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137 local function prune(rrs, time, soft) -- - - - - - - - - - - - - - - prune |
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138 time = time or socket.gettime(); |
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139 for i,rr in ipairs(rrs) do |
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140 if rr.tod then |
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141 if rr.tod < time then |
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142 rrs[rr[rr.type:lower()]] = nil; |
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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[rr[rr.type:lower()]] = nil; |
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149 table.remove(rrs, i); |
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150 end |
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151 end |
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152 end |
| 337 | 153 |
| 154 | |
| 155 -- metatables & co. ------------------------------------------ metatables & co. | |
| 156 | |
| 157 | |
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158 local resolver = {}; |
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159 resolver.__index = resolver; |
| 337 | 160 |
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161 resolver.timeout = default_timeout; |
| 337 | 162 |
|
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163 local function default_rr_tostring(rr) |
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164 local rr_val = rr.type and rr[rr.type:lower()]; |
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165 if type(rr_val) ~= "string" then |
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166 return "<UNKNOWN RDATA TYPE>"; |
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167 end |
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168 return rr_val; |
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169 end |
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170 |
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171 local special_tostrings = { |
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172 LOC = resolver.LOC_tostring; |
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173 MX = function (rr) |
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174 return string.format('%2i %s', rr.pref, rr.mx); |
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175 end; |
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176 SRV = function (rr) |
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177 local s = rr.srv; |
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178 return string.format('%5d %5d %5d %s', s.priority, s.weight, s.port, s.target); |
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179 end; |
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180 }; |
| 337 | 181 |
|
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182 local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable |
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183 function rr_metatable.__tostring(rr) |
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184 local rr_string = (special_tostrings[rr.type] or default_rr_tostring)(rr); |
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185 return string.format('%2s %-5s %6i %-28s %s', rr.class, rr.type, rr.ttl, rr.name, rr_string); |
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186 end |
| 337 | 187 |
| 188 | |
|
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189 local rrs_metatable = {}; -- - - - - - - - - - - - - - - - - - rrs_metatable |
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190 function rrs_metatable.__tostring(rrs) |
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191 local t = {}; |
|
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Anton Shestakov <av6@dwimlabs.net>
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192 for _, rr in ipairs(rrs) do |
|
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193 append(t, tostring(rr)..'\n'); |
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194 end |
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195 return table.concat(t); |
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196 end |
| 337 | 197 |
| 198 | |
|
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199 local cache_metatable = {}; -- - - - - - - - - - - - - - - - cache_metatable |
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200 function cache_metatable.__tostring(cache) |
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201 local time = socket.gettime(); |
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202 local t = {}; |
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203 for class,types in pairs(cache) do |
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204 for type,names in pairs(types) do |
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205 for name,rrs in pairs(names) do |
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206 prune(rrs, time); |
|
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207 append(t, tostring(rrs)); |
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208 end |
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209 end |
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|
210 end |
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211 return table.concat(t); |
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|
212 end |
| 337 | 213 |
| 214 | |
| 215 -- packet layer -------------------------------------------------- packet layer | |
| 216 | |
| 217 | |
|
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|
218 function dns.random(...) -- - - - - - - - - - - - - - - - - - - dns.random |
|
6645
4f934cf03bc9
net.dns: Make sure argument to math.randomseed does not overflow a 32 bit *signed* int (blame Lua). Closes #439
Kim Alvefur <zash@zash.se>
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|
219 math.randomseed(math.floor(10000*socket.gettime()) % 0x80000000); |
|
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|
220 dns.random = math.random; |
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|
221 return dns.random(...); |
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|
222 end |
| 337 | 223 |
| 224 | |
|
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225 local function encodeHeader(o) -- - - - - - - - - - - - - - - encodeHeader |
|
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|
226 o = o or {}; |
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227 o.id = o.id or dns.random(0, 0xffff); -- 16b (random) id |
| 337 | 228 |
|
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229 o.rd = o.rd or 1; -- 1b 1 recursion desired |
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230 o.tc = o.tc or 0; -- 1b 1 truncated response |
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231 o.aa = o.aa or 0; -- 1b 1 authoritative response |
|
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232 o.opcode = o.opcode or 0; -- 4b 0 query |
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|
233 -- 1 inverse query |
| 337 | 234 -- 2 server status request |
| 235 -- 3-15 reserved | |
|
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|
236 o.qr = o.qr or 0; -- 1b 0 query, 1 response |
| 337 | 237 |
|
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|
238 o.rcode = o.rcode or 0; -- 4b 0 no error |
| 337 | 239 -- 1 format error |
| 240 -- 2 server failure | |
| 241 -- 3 name error | |
| 242 -- 4 not implemented | |
| 243 -- 5 refused | |
| 244 -- 6-15 reserved | |
|
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|
245 o.z = o.z or 0; -- 3b 0 resvered |
|
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246 o.ra = o.ra or 0; -- 1b 1 recursion available |
| 337 | 247 |
|
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248 o.qdcount = o.qdcount or 1; -- 16b number of question RRs |
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249 o.ancount = o.ancount or 0; -- 16b number of answers RRs |
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250 o.nscount = o.nscount or 0; -- 16b number of nameservers RRs |
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251 o.arcount = o.arcount or 0; -- 16b number of additional RRs |
| 337 | 252 |
|
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253 -- string.char() rounds, so prevent roundup with -0.4999 |
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|
254 local header = string.char( |
|
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|
255 highbyte(o.id), o.id %0x100, |
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|
256 o.rd + 2*o.tc + 4*o.aa + 8*o.opcode + 128*o.qr, |
|
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257 o.rcode + 16*o.z + 128*o.ra, |
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258 highbyte(o.qdcount), o.qdcount %0x100, |
|
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|
259 highbyte(o.ancount), o.ancount %0x100, |
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|
260 highbyte(o.nscount), o.nscount %0x100, |
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261 highbyte(o.arcount), o.arcount %0x100 |
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|
262 ); |
| 337 | 263 |
|
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|
264 return header, o.id; |
|
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|
265 end |
| 337 | 266 |
| 267 | |
|
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268 local function encodeName(name) -- - - - - - - - - - - - - - - - encodeName |
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269 local t = {}; |
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270 for part in string.gmatch(name, '[^.]+') do |
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271 append(t, string.char(string.len(part))); |
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272 append(t, part); |
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273 end |
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274 append(t, string.char(0)); |
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275 return table.concat(t); |
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276 end |
| 337 | 277 |
| 278 | |
|
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279 local function encodeQuestion(qname, qtype, qclass) -- - - - encodeQuestion |
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280 qname = encodeName(qname); |
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281 qtype = dns.typecode[qtype or 'a']; |
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282 qclass = dns.classcode[qclass or 'in']; |
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283 return qname..qtype..qclass; |
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284 end |
| 337 | 285 |
| 286 | |
|
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287 function resolver:byte(len) -- - - - - - - - - - - - - - - - - - - - - byte |
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288 len = len or 1; |
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289 local offset = self.offset; |
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290 local last = offset + len - 1; |
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291 if last > #self.packet then |
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292 error(string.format('out of bounds: %i>%i', last, #self.packet)); |
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293 end |
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294 self.offset = offset + len; |
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295 return string.byte(self.packet, offset, last); |
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296 end |
| 337 | 297 |
| 298 | |
|
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299 function resolver:word() -- - - - - - - - - - - - - - - - - - - - - - word |
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300 local b1, b2 = self:byte(2); |
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301 return 0x100*b1 + b2; |
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302 end |
| 337 | 303 |
| 304 | |
| 305 function resolver:dword () -- - - - - - - - - - - - - - - - - - - - - dword | |
|
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306 local b1, b2, b3, b4 = self:byte(4); |
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307 --print('dword', b1, b2, b3, b4); |
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308 return 0x1000000*b1 + 0x10000*b2 + 0x100*b3 + b4; |
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309 end |
| 337 | 310 |
| 311 | |
|
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312 function resolver:sub(len) -- - - - - - - - - - - - - - - - - - - - - - sub |
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313 len = len or 1; |
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314 local s = string.sub(self.packet, self.offset, self.offset + len - 1); |
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315 self.offset = self.offset + len; |
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316 return s; |
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317 end |
| 337 | 318 |
| 319 | |
|
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320 function resolver:header(force) -- - - - - - - - - - - - - - - - - - header |
|
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321 local id = self:word(); |
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322 --print(string.format(':header id %x', id)); |
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323 if not self.active[id] and not force then return nil; end |
| 337 | 324 |
|
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325 local h = { id = id }; |
| 337 | 326 |
|
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327 local b1, b2 = self:byte(2); |
| 337 | 328 |
|
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329 h.rd = b1 %2; |
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330 h.tc = b1 /2%2; |
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331 h.aa = b1 /4%2; |
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332 h.opcode = b1 /8%16; |
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333 h.qr = b1 /128; |
| 337 | 334 |
|
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335 h.rcode = b2 %16; |
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336 h.z = b2 /16%8; |
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337 h.ra = b2 /128; |
| 337 | 338 |
|
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339 h.qdcount = self:word(); |
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340 h.ancount = self:word(); |
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341 h.nscount = self:word(); |
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342 h.arcount = self:word(); |
| 337 | 343 |
|
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344 for k,v in pairs(h) do h[k] = v-v%1; end |
| 337 | 345 |
|
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346 return h; |
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347 end |
| 337 | 348 |
| 349 | |
|
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350 function resolver:name() -- - - - - - - - - - - - - - - - - - - - - - name |
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351 local remember, pointers = nil, 0; |
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352 local len = self:byte(); |
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353 local n = {}; |
|
4422
c25dee24623f
s2smanager, net.dns: Fix handling for NXNAME and SRV target of "."
Florian Zeitz <florob@babelmonkeys.de>
parents:
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|
354 if len == 0 then return "." end -- Root label |
|
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355 while len > 0 do |
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356 if len >= 0xc0 then -- name is "compressed" |
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357 pointers = pointers + 1; |
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358 if pointers >= 20 then error('dns error: 20 pointers'); end; |
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359 local offset = ((len-0xc0)*0x100) + self:byte(); |
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360 remember = remember or self.offset; |
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361 self.offset = offset + 1; -- +1 for lua |
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362 else -- name is not compressed |
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363 append(n, self:sub(len)..'.'); |
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364 end |
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365 len = self:byte(); |
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|
366 end |
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367 self.offset = remember or self.offset; |
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368 return table.concat(n); |
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369 end |
| 337 | 370 |
| 371 | |
|
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372 function resolver:question() -- - - - - - - - - - - - - - - - - - question |
|
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373 local q = {}; |
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374 q.name = self:name(); |
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375 q.type = dns.type[self:word()]; |
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376 q.class = dns.class[self:word()]; |
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377 return q; |
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378 end |
| 337 | 379 |
| 380 | |
|
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381 function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A |
|
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382 local b1, b2, b3, b4 = self:byte(4); |
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383 rr.a = string.format('%i.%i.%i.%i', b1, b2, b3, b4); |
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|
384 end |
| 337 | 385 |
|
4267
29d7eb6ff62c
net.dns: Support for resolving AAAA records
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|
386 function resolver:AAAA(rr) |
|
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|
387 local addr = {}; |
|
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
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|
388 for _ = 1, rr.rdlength, 2 do |
|
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|
389 local b1, b2 = self:byte(2); |
|
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390 table.insert(addr, ("%02x%02x"):format(b1, b2)); |
|
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|
391 end |
| 4373 | 392 addr = table.concat(addr, ":"):gsub("%f[%x]0+(%x)","%1"); |
| 393 local zeros = {}; | |
|
8421
3d21c63ec03f
net.dns: Don't compress a single zero group in IPv6 addresses to match behaviour of inet_ntop
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
394 for item in addr:gmatch(":[0:]+:[0:]+:") do |
| 4373 | 395 table.insert(zeros, item) |
| 396 end | |
| 397 if #zeros == 0 then | |
| 398 rr.aaaa = addr; | |
| 399 return | |
| 400 elseif #zeros > 1 then | |
| 401 table.sort(zeros, function(a, b) return #a > #b end); | |
| 402 end | |
| 403 rr.aaaa = addr:gsub(zeros[1], "::", 1):gsub("^0::", "::"):gsub("::0$", "::"); | |
|
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29d7eb6ff62c
net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents:
4251
diff
changeset
|
404 end |
| 337 | 405 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
406 function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
407 rr.cname = self:name(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
408 end |
| 337 | 409 |
| 410 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
411 function resolver:MX(rr) -- - - - - - - - - - - - - - - - - - - - - - - MX |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
412 rr.pref = self:word(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
413 rr.mx = self:name(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
414 end |
| 337 | 415 |
| 416 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
417 function resolver:LOC_nibble_power() -- - - - - - - - - - LOC_nibble_power |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
418 local b = self:byte(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
419 --print('nibbles', ((b-(b%0x10))/0x10), (b%0x10)); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
420 return ((b-(b%0x10))/0x10) * (10^(b%0x10)); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
421 end |
| 337 | 422 |
| 423 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
424 function resolver:LOC(rr) -- - - - - - - - - - - - - - - - - - - - - - LOC |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
425 rr.version = self:byte(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
426 if rr.version == 0 then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
427 rr.loc = rr.loc or {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
428 rr.loc.size = self:LOC_nibble_power(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
429 rr.loc.horiz_pre = self:LOC_nibble_power(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
430 rr.loc.vert_pre = self:LOC_nibble_power(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
431 rr.loc.latitude = self:dword(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
432 rr.loc.longitude = self:dword(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
433 rr.loc.altitude = self:dword(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
434 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
435 end |
| 337 | 436 |
| 437 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
438 local function LOC_tostring_degrees(f, pos, neg) -- - - - - - - - - - - - - |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
439 f = f - 0x80000000; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
440 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
|
441 local deg, min, msec; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
442 msec = f%60000; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
443 f = (f-msec)/60000; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
444 min = f%60; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
445 deg = (f-min)/60; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
446 return string.format('%3d %2d %2.3f %s', deg, min, msec/1000, pos); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
447 end |
| 337 | 448 |
| 449 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
450 function resolver.LOC_tostring(rr) -- - - - - - - - - - - - - LOC_tostring |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
451 local t = {}; |
| 337 | 452 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
453 --[[ |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
454 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:
2068
diff
changeset
|
455 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:
2068
diff
changeset
|
456 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
457 --]] |
| 337 | 458 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
459 append(t, string.format( |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
460 '%s %s %.2fm %.2fm %.2fm %.2fm', |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
461 LOC_tostring_degrees (rr.loc.latitude, 'N', 'S'), |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
462 LOC_tostring_degrees (rr.loc.longitude, 'E', 'W'), |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
463 (rr.loc.altitude - 10000000) / 100, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
464 rr.loc.size / 100, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
465 rr.loc.horiz_pre / 100, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
466 rr.loc.vert_pre / 100 |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
467 )); |
| 337 | 468 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
469 return table.concat(t); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
470 end |
| 337 | 471 |
| 472 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
473 function resolver:NS(rr) -- - - - - - - - - - - - - - - - - - - - - - - NS |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
474 rr.ns = self:name(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
475 end |
| 337 | 476 |
| 477 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
478 function resolver:SOA(rr) -- - - - - - - - - - - - - - - - - - - - - - SOA |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
479 end |
| 337 | 480 |
| 481 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
482 function resolver:SRV(rr) -- - - - - - - - - - - - - - - - - - - - - - SRV |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
483 rr.srv = {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
484 rr.srv.priority = self:word(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
485 rr.srv.weight = self:word(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
486 rr.srv.port = self:word(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
487 rr.srv.target = self:name(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
488 end |
| 337 | 489 |
|
3513
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
490 function resolver:PTR(rr) |
|
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
491 rr.ptr = self:name(); |
|
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
492 end |
| 337 | 493 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
494 function resolver:TXT(rr) -- - - - - - - - - - - - - - - - - - - - - - TXT |
| 4251 | 495 rr.txt = self:sub (self:byte()); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
496 end |
| 337 | 497 |
| 498 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
499 function resolver:rr() -- - - - - - - - - - - - - - - - - - - - - - - - rr |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
500 local rr = {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
501 setmetatable(rr, rr_metatable); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
502 rr.name = self:name(self); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
503 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
|
504 rr.class = dns.class[self:word()] or rr.class; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
505 rr.ttl = 0x10000*self:word() + self:word(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
506 rr.rdlength = self:word(); |
| 337 | 507 |
|
8263
9b52b1f19b51
net.dns: Correctly apply lower bound of RTT (thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents:
8164
diff
changeset
|
508 rr.tod = self.time + math.max(rr.ttl, 1); |
| 337 | 509 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
510 local remember = self.offset; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
511 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
|
512 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
|
513 self.offset = remember; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
514 rr.rdata = self:sub(rr.rdlength); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
515 return rr; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
516 end |
| 337 | 517 |
| 518 | |
| 519 function resolver:rrs (count) -- - - - - - - - - - - - - - - - - - - - - rrs | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
520 local rrs = {}; |
|
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
changeset
|
521 for _ = 1, count do append(rrs, self:rr()); end |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
522 return rrs; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
523 end |
| 337 | 524 |
| 525 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
526 function resolver:decode(packet, force) -- - - - - - - - - - - - - - decode |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
527 self.packet, self.offset = packet, 1; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
528 local header = self:header(force); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
529 if not header then return nil; end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
530 local response = { header = header }; |
| 337 | 531 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
532 response.question = {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
533 local offset = self.offset; |
|
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
changeset
|
534 for _ = 1, response.header.qdcount do |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
535 append(response.question, self:question()); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
536 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
537 response.question.raw = string.sub(self.packet, offset, self.offset - 1); |
| 337 | 538 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
539 if not force then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
540 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
|
541 self.active[response.header.id] = nil; |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
542 return nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
543 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
544 end |
| 337 | 545 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
546 response.answer = self:rrs(response.header.ancount); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
547 response.authority = self:rrs(response.header.nscount); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
548 response.additional = self:rrs(response.header.arcount); |
| 337 | 549 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
550 return response; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
551 end |
| 337 | 552 |
| 553 | |
| 554 -- socket layer -------------------------------------------------- socket layer | |
| 555 | |
| 556 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
557 resolver.delays = { 1, 3 }; |
| 337 | 558 |
| 559 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
560 function resolver:addnameserver(address) -- - - - - - - - - - addnameserver |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
561 self.server = self.server or {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
562 append(self.server, address); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
563 end |
| 337 | 564 |
| 565 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
566 function resolver:setnameserver(address) -- - - - - - - - - - setnameserver |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
567 self.server = {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
568 self:addnameserver(address); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
569 end |
| 337 | 570 |
| 571 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
572 function resolver:adddefaultnameservers() -- - - - - adddefaultnameservers |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
573 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
|
574 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
|
575 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
|
576 self:addnameserver(server); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
577 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
578 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
579 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
|
580 -- 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
|
581 self:addnameserver("208.67.222.222"); |
|
2742
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2741
diff
changeset
|
582 self:addnameserver("208.67.220.220"); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
583 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
584 else -- posix |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
585 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
|
586 if resolv_conf then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
587 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
|
588 line = line:gsub("#.*$", "") |
|
7056
7b0651e4534f
net.dns: Allow a zone id in resolv.conf (eg like %eth0)
Kim Alvefur <zash@zash.se>
parents:
7054
diff
changeset
|
589 :match('^%s*nameserver%s+([%x:%.]*%%?%S*)%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
|
590 if line then |
|
7054
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
591 local ip = new_ip(line); |
|
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
592 if ip then |
|
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
593 self:addnameserver(ip.addr); |
|
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
594 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
|
595 end |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
596 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
597 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
598 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
|
599 -- 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
|
600 self:addnameserver("127.0.0.1"); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
601 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
602 end |
|
399
93b6587d9afb
Added temporary fix for srv on windows: using opendns nameservers
Waqas Hussain <waqas20@gmail.com>
parents:
379
diff
changeset
|
603 end |
| 337 | 604 |
| 605 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
606 function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
607 self.socket = self.socket or {}; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
608 self.socketset = self.socketset or {}; |
| 337 | 609 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
610 local sock = self.socket[servernum]; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
611 if sock then return sock; end |
| 337 | 612 |
|
6509
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
613 local ok, err; |
|
7054
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
614 local peer = self.server[servernum]; |
|
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
615 if peer:find(":") then |
|
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
616 sock, err = socket.udp6(); |
|
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
617 else |
|
6857
86fcc3fa1a97
net.dns: Use new IPv4-specific socket factory if available (fixes dns on libevent with latest development version of luasocket)
Kim Alvefur <zash@zash.se>
parents:
6780
diff
changeset
|
618 sock, err = (socket.udp4 or socket.udp)(); |
|
7054
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
619 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
|
620 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
|
621 if not sock then |
|
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
622 return nil, err; |
|
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
623 end |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
624 sock:settimeout(0); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
625 -- 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
|
626 self.socket[servernum] = sock; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
627 self.socketset[sock] = servernum; |
|
6509
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
628 -- set{sock,peer}name can fail, eg because of local routing table |
|
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
629 -- if so, try the next server |
|
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
630 ok, err = sock:setsockname('*', 0); |
|
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
631 if not ok then return self:servfail(sock, err); end |
|
7054
94d5e2f33a10
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
Florian Zeitz <florob@babelmonkeys.de>
parents:
6863
diff
changeset
|
632 ok, err = sock:setpeername(peer, 53); |
|
6509
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
633 if not ok then return self:servfail(sock, err); end |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
634 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
|
635 end |
| 337 | 636 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
637 function resolver:voidsocket(sock) |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
638 if self.socket[sock] then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
639 self.socketset[self.socket[sock]] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
640 self.socket[sock] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
641 elseif self.socketset[sock] then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
642 self.socket[self.socketset[sock]] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
643 self.socketset[sock] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
644 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
|
645 sock:close(); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
646 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
647 |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
648 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
|
649 self.socket_wrapper = func; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
650 end |
| 337 | 651 |
| 652 | |
| 653 function resolver:closeall () -- - - - - - - - - - - - - - - - - - closeall | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
654 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
|
655 self.socket[i] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
656 self.socketset[sock] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
657 sock:close(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
658 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
659 end |
| 337 | 660 |
| 661 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
662 function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
663 --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
|
664 local qname, qtype, qclass = standardize(rr.name, rr.type, rr.class); |
| 337 | 665 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
666 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
|
667 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
|
668 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
|
669 --print('remember all', all); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
670 if all then append(all, rr); end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
671 end |
| 337 | 672 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
673 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
|
674 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
|
675 set(self.cache, qclass, type, qname, setmetatable({}, rrs_metatable)); |
|
8900
fcf42bd7d067
net.dns: Don't attempt to cache unparsed data (fixes #1056)
Kim Alvefur <zash@zash.se>
parents:
8898
diff
changeset
|
676 if rr[qtype:lower()] and not rrs[rr[qtype:lower()]] then |
|
6463
460584257cc9
net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents:
6310
diff
changeset
|
677 rrs[rr[qtype:lower()]] = true; |
|
460584257cc9
net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents:
6310
diff
changeset
|
678 append(rrs, rr); |
|
460584257cc9
net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents:
6310
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 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
|
682 end |
| 337 | 683 |
| 684 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
685 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
|
686 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
|
687 end |
| 337 | 688 |
| 689 | |
|
6631
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
690 function resolver:peek (qname, qtype, qclass, n) -- - - - - - - - - - - - peek |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
691 qname, qtype, qclass = standardize(qname, qtype, qclass); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
692 local rrs = get(self.cache, qclass, qtype, qname); |
|
6631
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
693 if not rrs then |
|
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
694 if n then if n <= 0 then return end else n = 3 end |
|
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
695 rrs = get(self.cache, qclass, "CNAME", qname); |
|
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
696 if not (rrs and rrs[1]) then return end |
|
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
697 return self:peek(rrs[1].cname, qtype, qclass, n - 1); |
|
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
698 end |
|
2069
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 |
|
6631
45222bfb206f
net.dns, mod_s2s: Add chasing of CNAMEs to net.dns and remove it from mod_s2s
Kim Alvefur <zash@zash.se>
parents:
6509
diff
changeset
|
703 if self.unsorted[rrs] then table.sort (rrs, comp_mx); self.unsorted[rrs] = nil; end |
|
2069
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 |
|
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
752 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
|
753 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
|
754 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
|
755 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
|
756 conn:send (o.packet) |
|
7093
388281be2bc7
net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents:
7059
diff
changeset
|
757 |
|
388281be2bc7
net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents:
7059
diff
changeset
|
758 -- remember which coroutine wants the answer |
|
388281be2bc7
net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents:
7059
diff
changeset
|
759 if co then |
|
388281be2bc7
net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents:
7059
diff
changeset
|
760 set(self.wanted, qclass, qtype, qname, co, true); |
|
388281be2bc7
net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents:
7059
diff
changeset
|
761 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
|
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 |
|
6509
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
786 function resolver:servfail(sock, err) |
|
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 |
|
6508
4a28b8320d7f
net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents:
6463
diff
changeset
|
792 sock = self:voidsocket(sock); |
|
2069
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 |
|
6509
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
809 sock, err = self:getsocket(o.server); |
|
6508
4a28b8320d7f
net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents:
6463
diff
changeset
|
810 if sock then sock:send(o.packet); end |
|
2069
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 |
|
6509
7cb69eba3e95
net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents:
6508
diff
changeset
|
826 return sock, err; |
|
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
|
827 end |
| 337 | 828 |
|
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
829 function resolver:settimeout(seconds) |
|
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
830 self.timeout = seconds; |
|
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
831 end |
|
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
832 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
833 function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
834 --print('receive'); print(self.socket); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
835 self.time = socket.gettime(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
836 rset = rset or self.socket; |
| 337 | 837 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
838 local response; |
|
7469
363e4a5e9b0a
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7322
diff
changeset
|
839 for _, sock in pairs(rset) do |
| 337 | 840 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
841 if self.socketset[sock] then |
|
2619
04158baefa34
net.dns: Update for new socket API
Matthew Wild <mwild1@gmail.com>
parents:
2578
diff
changeset
|
842 local packet = sock:receive(); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
843 if packet then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
844 response = self:decode(packet); |
|
2278
8c10f13c0c20
modulemanager, net.dns: Remove trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2082
diff
changeset
|
845 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
|
846 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
|
847 --print('received response'); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
848 --self.print(response); |
| 337 | 849 |
|
7469
363e4a5e9b0a
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7322
diff
changeset
|
850 for _, rr in pairs(response.answer) do |
|
7059
7ec52755622f
Backout 88d54bec26b7 prior to release, as it certainly requires more testing
Matthew Wild <mwild1@gmail.com>
parents:
7056
diff
changeset
|
851 if rr.name:sub(-#response.question[1].name, -1) == response.question[1].name then |
|
7ec52755622f
Backout 88d54bec26b7 prior to release, as it certainly requires more testing
Matthew Wild <mwild1@gmail.com>
parents:
7056
diff
changeset
|
852 self:remember(rr, response.question[1].type) |
|
7ec52755622f
Backout 88d54bec26b7 prior to release, as it certainly requires more testing
Matthew Wild <mwild1@gmail.com>
parents:
7056
diff
changeset
|
853 end |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
854 end |
| 337 | 855 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
856 -- retire the query |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
857 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
|
858 queries[response.question.raw] = nil; |
|
1381b2071c2e
net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents:
2081
diff
changeset
|
859 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
860 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
|
861 if not next(self.active) then self:closeall(); end |
| 337 | 862 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
863 -- 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
|
864 local q = response.question[1]; |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
865 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
|
866 if cos then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
867 for co in pairs(cos) do |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
868 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
|
869 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
870 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
|
871 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
872 end |
|
5266
5c3a3ef6b769
net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents:
4422
diff
changeset
|
873 |
|
2069
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 |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
876 end |
| 337 | 877 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
878 return response; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
879 end |
| 337 | 880 |
| 881 | |
|
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
|
882 function resolver:feed(sock, packet, force) |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
883 --print('receive'); print(self.socket); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
884 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
|
885 |
|
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
|
886 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
|
887 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
|
888 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
|
889 --print('received response'); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
890 --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
|
891 |
|
7469
363e4a5e9b0a
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7322
diff
changeset
|
892 for _, rr in pairs(response.answer) do |
|
8897
102242a7ee60
net.dns: Cache all records from the 'answer' section (fixes #487)
Kim Alvefur <zash@zash.se>
parents:
8421
diff
changeset
|
893 self:remember(rr, rr.type); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
894 end |
|
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
895 |
|
8898
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
896 for _, rr in pairs(response.additional) do |
|
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
897 self:remember(rr, rr.type); |
|
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
898 end |
|
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
899 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
900 -- retire the query |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
901 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
|
902 queries[response.question.raw] = nil; |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
903 if not next(queries) then self.active[response.header.id] = nil; end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
904 if not next(self.active) then 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
|
905 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
906 -- was the query on the wanted list? |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
907 local q = response.question[1]; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
908 if q then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
909 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
|
910 if cos then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
911 for co in pairs(cos) do |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
912 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
|
913 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
914 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
|
915 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
916 end |
|
2742
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2741
diff
changeset
|
917 end |
|
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
918 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
919 return response; |
|
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
920 end |
|
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
921 |
|
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
|
922 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
|
923 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
|
924 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
|
925 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
|
926 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
|
927 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
|
928 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
|
929 end |
|
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
896
diff
changeset
|
930 end |
|
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
931 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
932 function resolver:pulse() -- - - - - - - - - - - - - - - - - - - - - pulse |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
933 --print(':pulse'); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
934 while self:receive() do end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
935 if not next(self.active) then return nil; end |
| 337 | 936 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
937 self.time = socket.gettime(); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
938 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
|
939 for question,o in pairs(queries) do |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
940 if self.time >= o.retry then |
| 337 | 941 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
942 o.server = o.server + 1; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
943 if o.server > #self.server then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
944 o.server = 1; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
945 o.delay = o.delay + 1; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
946 end |
| 337 | 947 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
948 if o.delay > #self.delays then |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
949 --print('timeout'); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
950 queries[question] = nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
951 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
|
952 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
|
953 else |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
954 --print('retry', o.server, o.delay); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
955 local _a = self.socket[o.server]; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
956 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
|
957 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
|
958 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
959 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
960 end |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
961 end |
| 337 | 962 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
963 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
|
964 return nil; |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
965 end |
| 337 | 966 |
| 967 | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
968 function resolver:lookup(qname, qtype, qclass) -- - - - - - - - - - lookup |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
969 self:query (qname, qtype, qclass) |
|
3049
e54774bd73a7
net/dns: Fix socket.select timeout.
Brian Cully <bjc@junctionnetworks.com>
parents:
2742
diff
changeset
|
970 while self:pulse() do |
|
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
971 local recvt = {} |
|
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
972 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
|
973 recvt[i] = s |
|
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
974 end |
|
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
975 socket.select(recvt, nil, 4) |
|
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
976 end |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
977 --print(self.cache); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
978 return self:peek(qname, qtype, qclass); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
979 end |
| 337 | 980 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
981 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
|
982 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
|
983 end |
| 337 | 984 |
|
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
985 function resolver:tohostname(ip) |
|
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
986 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
|
987 end |
|
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
988 |
|
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
989 --print ---------------------------------------------------------------- print |
| 337 | 990 |
| 991 | |
| 992 local hints = { -- - - - - - - - - - - - - - - - - - - - - - - - - - - hints | |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
993 qr = { [0]='query', 'response' }, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
994 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
|
995 aa = { [0]='non-authoritative', 'authoritative' }, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
996 tc = { [0]='complete', 'truncated' }, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
997 rd = { [0]='recursion not desired', 'recursion desired' }, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
998 ra = { [0]='recursion not available', 'recursion available' }, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
999 z = { [0]='(reserved)' }, |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1000 rcode = { [0]='no error', 'format error', 'server failure', 'name error', 'not implemented' }, |
| 337 | 1001 |
|
2069
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net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1002 type = dns.type, |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1003 class = dns.class |
|
72357b1c6d88
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diff
changeset
|
1004 }; |
| 337 | 1005 |
| 1006 | |
|
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1007 local function hint(p, s) -- - - - - - - - - - - - - - - - - - - - - - hint |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1008 return (hints[s] and hints[s][p[s]]) or ''; |
|
72357b1c6d88
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changeset
|
1009 end |
| 337 | 1010 |
| 1011 | |
|
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1012 function resolver.print(response) -- - - - - - - - - - - - - resolver.print |
|
7480
3dc7de31d3d1
net.dns: don't use "for s,s in pairs..." (unused loop variable s) [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7469
diff
changeset
|
1013 for _, s in pairs { 'id', 'qr', 'opcode', 'aa', 'tc', 'rd', 'ra', 'z', |
|
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1014 'rcode', 'qdcount', 'ancount', 'nscount', 'arcount' } do |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1015 print( string.format('%-30s', 'header.'..s), response.header[s], hint(response.header, s) ); |
|
72357b1c6d88
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parents:
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diff
changeset
|
1016 end |
| 337 | 1017 |
|
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1018 for i,question in ipairs(response.question) do |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1019 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
|
1020 print(string.format ('question[%i].type ', i), question.type); |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1021 print(string.format ('question[%i].class ', i), question.class); |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1022 end |
| 337 | 1023 |
|
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1024 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
|
1025 local tmp; |
|
7480
3dc7de31d3d1
net.dns: don't use "for s,s in pairs..." (unused loop variable s) [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7469
diff
changeset
|
1026 for _, s in pairs({'answer', 'authority', 'additional'}) do |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1027 for i,rr in pairs(response[s]) do |
|
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
changeset
|
1028 for _, t in pairs({ 'name', 'type', 'class', 'ttl', 'rdlength' }) do |
|
2069
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, t); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1030 print(string.format('%-30s', tmp), rr[t], hint(rr, t)); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1031 end |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1032 for j,t in pairs(rr) do |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1033 if not common[j] then |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1034 tmp = string.format('%s[%i].%s', s, i, j); |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1035 print(string.format('%-30s %s', tostring(tmp), tostring(t))); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1036 end |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1037 end |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1038 end |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1039 end |
|
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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changeset
|
1040 end |
| 337 | 1041 |
| 1042 | |
| 1043 -- module api ------------------------------------------------------ module api | |
| 1044 | |
| 1045 | |
| 1046 function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver | |
|
6310
d232bb1bbe1e
net.dns: Remove unused obsolete code
Matthew Wild <mwild1@gmail.com>
parents:
6309
diff
changeset
|
1047 local r = { active = {}, cache = {}, unsorted = {}, wanted = {}, best_server = 1 }; |
|
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1048 setmetatable (r, resolver); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1049 setmetatable (r.cache, cache_metatable); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1050 setmetatable (r.unsorted, { __mode = 'kv' }); |
|
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1051 return r; |
|
72357b1c6d88
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parents:
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diff
changeset
|
1052 end |
| 337 | 1053 |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1054 local _resolver = dns.resolver(); |
|
60493186fef6
net.dns: Removed some useless indirection to improve readability.
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diff
changeset
|
1055 dns._resolver = _resolver; |
| 337 | 1056 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1057 function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1058 return _resolver:lookup(...); |
|
2069
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1059 end |
| 337 | 1060 |
|
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1061 function dns.tohostname(...) |
|
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1062 return _resolver:tohostname(...); |
|
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1063 end |
|
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1064 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1065 function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1066 return _resolver:purge(...); |
|
2069
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net.dns: Fixed indentation and coding style.
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parents:
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diff
changeset
|
1067 end |
| 337 | 1068 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1069 function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1070 return _resolver:peek(...); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
1071 end |
| 337 | 1072 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1073 function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1074 return _resolver:query(...); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1075 end |
| 337 | 1076 |
|
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1077 function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1078 return _resolver:feed(...); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1079 end |
|
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1080 |
|
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1081 function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel |
|
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1082 return _resolver:cancel(...); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1083 end |
| 337 | 1084 |
|
3328
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1085 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
|
1086 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
|
1087 end |
|
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1088 |
|
5566
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1089 function dns.cache() |
|
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1090 return _resolver.cache; |
|
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1091 end |
|
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1092 |
|
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
|
1093 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
|
1094 return _resolver:socket_wrapper_set(...); |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1095 end |
| 337 | 1096 |
|
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1097 return dns; |
