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net/dns.lua @ 12429:16a49f04d507
adhoc: Include stanza and origin in adhoc event data
This allows easier access to these, which could be useful for all sorts
of reasons
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Mon, 06 Mar 2017 15:19:35 +0100 |
parent | 12387:05c250fa335a |
child | 12604:bd9e006a7a74 |
rev | line source |
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1523
841d61be198f
Remove version number from copyright headers
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1 -- Prosody IM |
615 | 2 -- This file is included with Prosody IM. It has modifications, |
3 -- which are hereby placed in the public domain. | |
337 | 4 |
5 | |
6 -- todo: quick (default) header generation | |
7 -- todo: nxdomain, error handling | |
8 -- todo: cache results of encodeName | |
9 | |
10 | |
11 -- reference: http://tools.ietf.org/html/rfc1035 | |
12 -- reference: http://tools.ietf.org/html/rfc1876 (LOC) | |
13 | |
14 | |
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15 local socket = require "socket"; |
10664
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net.dns: Handle being loaded outside of Prosody
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16 local have_timer, timer = pcall(require, "util.timer"); |
7054
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net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]
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17 local new_ip = require "util.ip".new_ip; |
8427
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net.dns: Use inet_ntop from util.net if available
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18 local have_util_net, util_net = pcall(require, "util.net"); |
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net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
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19 |
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20 local log = require "util.logger".init("dns"); |
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21 |
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net.dns: Updated to use util.windows.get_nameservers for enumerating nameservers on Windows.
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22 local _, windows = pcall(require, "util.windows"); |
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23 local is_windows = (_ and windows) or os.getenv("WINDIR"); |
337 | 24 |
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25 local coroutine, io, math, string, table = |
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26 coroutine, io, math, string, table; |
337 | 27 |
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28 local ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type = |
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29 ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type; |
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30 |
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31 local ztact = { -- public domain 20080404 lua@ztact.com |
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32 get = function(parent, ...) |
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33 local len = select('#', ...); |
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34 for i=1,len do |
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35 parent = parent[select(i, ...)]; |
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36 if parent == nil then break; end |
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37 end |
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38 return parent; |
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39 end; |
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40 set = function(parent, ...) |
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41 local len = select('#', ...); |
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42 local key, value = select(len-1, ...); |
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43 local cutpoint, cutkey; |
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44 |
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45 for i=1,len-2 do |
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46 local key = select (i, ...) |
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47 local child = parent[key] |
337 | 48 |
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49 if value == nil then |
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50 if child == nil then |
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51 return; |
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52 elseif next(child, next(child)) then |
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53 cutpoint = nil; cutkey = nil; |
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54 elseif cutpoint == nil then |
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55 cutpoint = parent; cutkey = key; |
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56 end |
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57 elseif child == nil then |
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58 child = {}; |
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59 parent[key] = child; |
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60 end |
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61 parent = child |
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62 end |
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63 |
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64 if value == nil and cutpoint then |
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65 cutpoint[cutkey] = nil; |
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66 else |
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67 parent[key] = value; |
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68 return value; |
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69 end |
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70 end; |
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71 }; |
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72 local get, set = ztact.get, ztact.set; |
337 | 73 |
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74 local default_timeout = 5; |
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75 local default_jitter = 1; |
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76 local default_retry_jitter = 2; |
337 | 77 |
78 -------------------------------------------------- module dns | |
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79 local _ENV = nil; |
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80 -- luacheck: std none |
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81 local dns = {}; |
337 | 82 |
83 | |
84 -- dns type & class codes ------------------------------ dns type & class codes | |
85 | |
86 | |
87 local append = table.insert | |
88 | |
89 | |
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90 local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte |
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91 return (i-(i%0x100))/0x100; |
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92 end |
337 | 93 |
94 | |
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95 local function augment (t, prefix) -- - - - - - - - - - - - - - - - - augment |
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96 local a = {}; |
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97 for i,s in pairs(t) do |
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98 a[i] = s; |
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99 a[s] = s; |
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100 a[string.lower(s)] = s; |
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101 end |
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102 setmetatable(a, { |
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103 __index = function (_, i) |
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104 if type(i) == "number" then |
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105 return ("%s%d"):format(prefix, i); |
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106 elseif type(i) == "string" then |
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107 return i:upper(); |
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108 end |
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109 end; |
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110 }) |
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111 return a; |
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112 end |
337 | 113 |
114 | |
115 local function encode (t) -- - - - - - - - - - - - - - - - - - - - - encode | |
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116 local code = {}; |
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117 for i,s in pairs(t) do |
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118 local word = string.char(highbyte(i), i%0x100); |
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119 code[i] = word; |
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120 code[s] = word; |
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121 code[string.lower(s)] = word; |
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122 end |
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123 return code; |
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124 end |
337 | 125 |
126 | |
127 dns.types = { | |
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128 [1] = "A", -- a host address,[RFC1035],, |
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129 [2] = "NS", -- an authoritative name server,[RFC1035],, |
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130 [3] = "MD", -- a mail destination (OBSOLETE - use MX),[RFC1035],, |
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131 [4] = "MF", -- a mail forwarder (OBSOLETE - use MX),[RFC1035],, |
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132 [5] = "CNAME", -- the canonical name for an alias,[RFC1035],, |
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133 [6] = "SOA", -- marks the start of a zone of authority,[RFC1035],, |
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134 [7] = "MB", -- a mailbox domain name (EXPERIMENTAL),[RFC1035],, |
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135 [8] = "MG", -- a mail group member (EXPERIMENTAL),[RFC1035],, |
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parents:
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diff
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136 [9] = "MR", -- a mail rename domain name (EXPERIMENTAL),[RFC1035],, |
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parents:
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137 [10] = "NULL", -- a null RR (EXPERIMENTAL),[RFC1035],, |
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parents:
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138 [11] = "WKS", -- a well known service description,[RFC1035],, |
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parents:
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139 [12] = "PTR", -- a domain name pointer,[RFC1035],, |
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parents:
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diff
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140 [13] = "HINFO", -- host information,[RFC1035],, |
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parents:
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141 [14] = "MINFO", -- mailbox or mail list information,[RFC1035],, |
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parents:
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diff
changeset
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142 [15] = "MX", -- mail exchange,[RFC1035],, |
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parents:
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diff
changeset
|
143 [16] = "TXT", -- text strings,[RFC1035],, |
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parents:
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144 [17] = "RP", -- for Responsible Person,[RFC1183],, |
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parents:
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145 [18] = "AFSDB", -- for AFS Data Base location,[RFC1183][RFC5864],, |
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parents:
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146 [19] = "X25", -- for X.25 PSDN address,[RFC1183],, |
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parents:
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147 [20] = "ISDN", -- for ISDN address,[RFC1183],, |
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parents:
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148 [21] = "RT", -- for Route Through,[RFC1183],, |
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149 [22] = "NSAP", -- "for NSAP address, NSAP style A record",[RFC1706],, |
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parents:
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|
150 [23] = "NSAP-PTR", -- "for domain name pointer, NSAP style",[RFC1348][RFC1637][RFC1706],, |
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parents:
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changeset
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151 [24] = "SIG", -- for security signature,[RFC4034][RFC3755][RFC2535][RFC2536][RFC2537][RFC2931][RFC3110][RFC3008],, |
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152 [25] = "KEY", -- for security key,[RFC4034][RFC3755][RFC2535][RFC2536][RFC2537][RFC2539][RFC3008][RFC3110],, |
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parents:
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153 [26] = "PX", -- X.400 mail mapping information,[RFC2163],, |
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parents:
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154 [27] = "GPOS", -- Geographical Position,[RFC1712],, |
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parents:
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diff
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|
155 [28] = "AAAA", -- IP6 Address,[RFC3596],, |
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parents:
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diff
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156 [29] = "LOC", -- Location Information,[RFC1876],, |
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parents:
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157 [30] = "NXT", -- Next Domain (OBSOLETE),[RFC3755][RFC2535],, |
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parents:
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158 [31] = "EID", -- Endpoint Identifier,[Michael_Patton][http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt],,1995-06 |
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parents:
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159 [32] = "NIMLOC", -- Nimrod Locator,[1][Michael_Patton][http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt],,1995-06 |
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parents:
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160 [33] = "SRV", -- Server Selection,[1][RFC2782],, |
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161 [34] = "ATMA", -- ATM Address,"[ ATM Forum Technical Committee, ""ATM Name System, V2.0"", Doc ID: AF-DANS-0152.000, July 2000. Available from and held in escrow by IANA.]",, |
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162 [35] = "NAPTR", -- Naming Authority Pointer,[RFC2915][RFC2168][RFC3403],, |
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parents:
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163 [36] = "KX", -- Key Exchanger,[RFC2230],, |
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parents:
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|
164 [37] = "CERT", -- CERT,[RFC4398],, |
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parents:
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165 [38] = "A6", -- A6 (OBSOLETE - use AAAA),[RFC3226][RFC2874][RFC6563],, |
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parents:
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166 [39] = "DNAME", -- DNAME,[RFC6672],, |
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parents:
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167 [40] = "SINK", -- SINK,[Donald_E_Eastlake][http://tools.ietf.org/html/draft-eastlake-kitchen-sink],,1997-11 |
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168 [41] = "OPT", -- OPT,[RFC6891][RFC3225],, |
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parents:
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169 [42] = "APL", -- APL,[RFC3123],, |
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170 [43] = "DS", -- Delegation Signer,[RFC4034][RFC3658],, |
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parents:
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171 [44] = "SSHFP", -- SSH Key Fingerprint,[RFC4255],, |
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parents:
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172 [45] = "IPSECKEY", -- IPSECKEY,[RFC4025],, |
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173 [46] = "RRSIG", -- RRSIG,[RFC4034][RFC3755],, |
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174 [47] = "NSEC", -- NSEC,[RFC4034][RFC3755],, |
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175 [48] = "DNSKEY", -- DNSKEY,[RFC4034][RFC3755],, |
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parents:
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176 [49] = "DHCID", -- DHCID,[RFC4701],, |
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parents:
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177 [50] = "NSEC3", -- NSEC3,[RFC5155],, |
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parents:
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178 [51] = "NSEC3PARAM", -- NSEC3PARAM,[RFC5155],, |
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parents:
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179 [52] = "TLSA", -- TLSA,[RFC6698],, |
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parents:
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180 [53] = "SMIMEA", -- S/MIME cert association,[RFC8162],SMIMEA/smimea-completed-template,2015-12-01 |
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parents:
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changeset
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181 -- [54] = "Unassigned", -- ,,, |
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parents:
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|
182 [55] = "HIP", -- Host Identity Protocol,[RFC8005],, |
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parents:
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183 [56] = "NINFO", -- NINFO,[Jim_Reid],NINFO/ninfo-completed-template,2008-01-21 |
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parents:
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184 [57] = "RKEY", -- RKEY,[Jim_Reid],RKEY/rkey-completed-template,2008-01-21 |
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Kim Alvefur <zash@zash.se>
parents:
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185 [58] = "TALINK", -- Trust Anchor LINK,[Wouter_Wijngaards],TALINK/talink-completed-template,2010-02-17 |
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Kim Alvefur <zash@zash.se>
parents:
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186 [59] = "CDS", -- Child DS,[RFC7344],CDS/cds-completed-template,2011-06-06 |
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parents:
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187 [60] = "CDNSKEY", -- DNSKEY(s) the Child wants reflected in DS,[RFC7344],,2014-06-16 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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|
188 [61] = "OPENPGPKEY", -- OpenPGP Key,[RFC7929],OPENPGPKEY/openpgpkey-completed-template,2014-08-12 |
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Kim Alvefur <zash@zash.se>
parents:
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diff
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|
189 [62] = "CSYNC", -- Child-To-Parent Synchronization,[RFC7477],,2015-01-27 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
190 -- [63 .. 98] = "Unassigned", -- ,,, |
c5d5dfaa8d38
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parents:
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diff
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|
191 [99] = "SPF", -- ,[RFC7208],, |
c5d5dfaa8d38
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parents:
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diff
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|
192 [100] = "UINFO", -- ,[IANA-Reserved],, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
8902
diff
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|
193 [101] = "UID", -- ,[IANA-Reserved],, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
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|
194 [102] = "GID", -- ,[IANA-Reserved],, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
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|
195 [103] = "UNSPEC", -- ,[IANA-Reserved],, |
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parents:
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diff
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|
196 [104] = "NID", -- ,[RFC6742],ILNP/nid-completed-template, |
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Kim Alvefur <zash@zash.se>
parents:
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|
197 [105] = "L32", -- ,[RFC6742],ILNP/l32-completed-template, |
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Kim Alvefur <zash@zash.se>
parents:
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|
198 [106] = "L64", -- ,[RFC6742],ILNP/l64-completed-template, |
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Kim Alvefur <zash@zash.se>
parents:
8902
diff
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|
199 [107] = "LP", -- ,[RFC6742],ILNP/lp-completed-template, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
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|
200 [108] = "EUI48", -- an EUI-48 address,[RFC7043],EUI48/eui48-completed-template,2013-03-27 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
201 [109] = "EUI64", -- an EUI-64 address,[RFC7043],EUI64/eui64-completed-template,2013-03-27 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
202 -- [110 .. 248] = "Unassigned", -- ,,, |
c5d5dfaa8d38
net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents:
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|
203 [249] = "TKEY", -- Transaction Key,[RFC2930],, |
c5d5dfaa8d38
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parents:
8902
diff
changeset
|
204 [250] = "TSIG", -- Transaction Signature,[RFC2845],, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
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|
205 [251] = "IXFR", -- incremental transfer,[RFC1995],, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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|
206 [252] = "AXFR", -- transfer of an entire zone,[RFC1035][RFC5936],, |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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|
207 [253] = "MAILB", -- "mailbox-related RRs (MB, MG or MR)",[RFC1035],, |
c5d5dfaa8d38
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parents:
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|
208 [254] = "MAILA", -- mail agent RRs (OBSOLETE - see MX),[RFC1035],, |
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parents:
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209 [255] = "*", -- A request for all records the server/cache has available,[RFC1035][RFC6895],, |
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parents:
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diff
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|
210 [256] = "URI", -- URI,[RFC7553],URI/uri-completed-template,2011-02-22 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
8902
diff
changeset
|
211 [257] = "CAA", -- Certification Authority Restriction,[RFC6844],CAA/caa-completed-template,2011-04-07 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
212 [258] = "AVC", -- Application Visibility and Control,[Wolfgang_Riedel],AVC/avc-completed-template,2016-02-26 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
8902
diff
changeset
|
213 [259] = "DOA", -- Digital Object Architecture,[draft-durand-doa-over-dns],DOA/doa-completed-template,2017-08-30 |
c5d5dfaa8d38
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Kim Alvefur <zash@zash.se>
parents:
8902
diff
changeset
|
214 -- [260 .. 32767] = "Unassigned", -- ,,, |
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
215 [32768] = "TA", -- DNSSEC Trust Authorities,"[Sam_Weiler][http://cameo.library.cmu.edu/][ Deploying DNSSEC Without a Signed Root. Technical Report 1999-19, Information Networking Institute, Carnegie Mellon University, April 2004.]",,2005-12-13 |
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parents:
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diff
changeset
|
216 [32769] = "DLV", -- DNSSEC Lookaside Validation,[RFC4431],, |
c5d5dfaa8d38
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parents:
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diff
changeset
|
217 -- [32770 .. 65279] = "Unassigned", -- ,,, |
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parents:
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diff
changeset
|
218 -- [65280 .. 65534] = "Private use", -- ,,, |
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
219 -- [65535] = "Reserved", -- ,,, |
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parents:
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diff
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|
220 } |
337 | 221 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
222 dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' }; |
337 | 223 |
224 | |
8908
144666d0ad2f
net.dns: Lazily generate unknown RR type names
Kim Alvefur <zash@zash.se>
parents:
8907
diff
changeset
|
225 dns.type = augment (dns.types, "TYPE"); |
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226 dns.class = augment (dns.classes, "CLASS"); |
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227 dns.typecode = encode (dns.types); |
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228 dns.classcode = encode (dns.classes); |
337 | 229 |
230 | |
231 | |
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232 local function standardize(qname, qtype, qclass) -- - - - - - - standardize |
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233 if string.byte(qname, -1) ~= 0x2E then qname = qname..'.'; end |
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234 qname = string.lower(qname); |
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235 return qname, dns.type[qtype or 'A'], dns.class[qclass or 'IN']; |
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236 end |
337 | 237 |
238 | |
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239 local function prune(rrs, time, soft) -- - - - - - - - - - - - - - - prune |
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240 time = time or socket.gettime(); |
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241 for i,rr in ipairs(rrs) do |
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242 if rr.tod then |
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243 if rr.tod < time then |
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244 rrs[rr[rr.type:lower()]] = nil; |
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245 table.remove(rrs, i); |
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246 return prune(rrs, time, soft); -- Re-iterate |
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247 end |
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248 elseif soft == 'soft' then -- What is this? I forget! |
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249 assert(rr.ttl == 0); |
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250 rrs[rr[rr.type:lower()]] = nil; |
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251 table.remove(rrs, i); |
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252 end |
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253 end |
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254 end |
337 | 255 |
256 | |
257 -- metatables & co. ------------------------------------------ metatables & co. | |
258 | |
259 | |
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260 local resolver = {}; |
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261 resolver.__index = resolver; |
337 | 262 |
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263 resolver.timeout = default_timeout; |
337 | 264 |
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265 local function default_rr_tostring(rr) |
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266 local rr_val = rr.type and rr[rr.type:lower()]; |
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267 if type(rr_val) ~= "string" then |
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268 return "<UNKNOWN RDATA TYPE>"; |
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269 end |
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270 return rr_val; |
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271 end |
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272 |
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273 local special_tostrings = { |
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274 LOC = resolver.LOC_tostring; |
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275 MX = function (rr) |
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276 return string.format('%2i %s', rr.pref, rr.mx); |
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277 end; |
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278 SRV = function (rr) |
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279 local s = rr.srv; |
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280 return string.format('%5d %5d %5d %s', s.priority, s.weight, s.port, s.target); |
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281 end; |
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282 }; |
337 | 283 |
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284 local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable |
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285 function rr_metatable.__tostring(rr) |
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286 local rr_string = (special_tostrings[rr.type] or default_rr_tostring)(rr); |
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287 return string.format('%2s %-5s %6i %-28s %s', rr.class, rr.type, rr.ttl, rr.name, rr_string); |
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288 end |
337 | 289 |
290 | |
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291 local rrs_metatable = {}; -- - - - - - - - - - - - - - - - - - rrs_metatable |
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292 function rrs_metatable.__tostring(rrs) |
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293 local t = {}; |
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Anton Shestakov <av6@dwimlabs.net>
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294 for _, rr in ipairs(rrs) do |
2069
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295 append(t, tostring(rr)..'\n'); |
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296 end |
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297 return table.concat(t); |
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298 end |
337 | 299 |
300 | |
2069
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301 local cache_metatable = {}; -- - - - - - - - - - - - - - - - cache_metatable |
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302 function cache_metatable.__tostring(cache) |
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303 local time = socket.gettime(); |
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304 local t = {}; |
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305 for class,types in pairs(cache) do |
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|
306 for type,names in pairs(types) do |
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|
307 for name,rrs in pairs(names) do |
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|
308 prune(rrs, time); |
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309 append(t, tostring(rrs)); |
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310 end |
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311 end |
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312 end |
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313 return table.concat(t); |
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|
314 end |
337 | 315 |
316 | |
317 -- packet layer -------------------------------------------------- packet layer | |
318 | |
319 | |
2069
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|
320 function dns.random(...) -- - - - - - - - - - - - - - - - - - - dns.random |
6645
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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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6631
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|
321 math.randomseed(math.floor(10000*socket.gettime()) % 0x80000000); |
2069
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322 dns.random = math.random; |
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|
323 return dns.random(...); |
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324 end |
337 | 325 |
326 | |
2069
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|
327 local function encodeHeader(o) -- - - - - - - - - - - - - - - encodeHeader |
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|
328 o = o or {}; |
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329 o.id = o.id or dns.random(0, 0xffff); -- 16b (random) id |
337 | 330 |
2069
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331 o.rd = o.rd or 1; -- 1b 1 recursion desired |
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332 o.tc = o.tc or 0; -- 1b 1 truncated response |
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333 o.aa = o.aa or 0; -- 1b 1 authoritative response |
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334 o.opcode = o.opcode or 0; -- 4b 0 query |
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|
335 -- 1 inverse query |
337 | 336 -- 2 server status request |
337 -- 3-15 reserved | |
2069
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338 o.qr = o.qr or 0; -- 1b 0 query, 1 response |
337 | 339 |
2069
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340 o.rcode = o.rcode or 0; -- 4b 0 no error |
337 | 341 -- 1 format error |
342 -- 2 server failure | |
343 -- 3 name error | |
344 -- 4 not implemented | |
345 -- 5 refused | |
346 -- 6-15 reserved | |
12387
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Spelling: Fix various spelling mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
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10976
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|
347 o.z = o.z or 0; -- 3b 0 reserved |
2069
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348 o.ra = o.ra or 0; -- 1b 1 recursion available |
337 | 349 |
2069
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350 o.qdcount = o.qdcount or 1; -- 16b number of question RRs |
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351 o.ancount = o.ancount or 0; -- 16b number of answers RRs |
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352 o.nscount = o.nscount or 0; -- 16b number of nameservers RRs |
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353 o.arcount = o.arcount or 0; -- 16b number of additional RRs |
337 | 354 |
2069
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355 -- string.char() rounds, so prevent roundup with -0.4999 |
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|
356 local header = string.char( |
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|
357 highbyte(o.id), o.id %0x100, |
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|
358 o.rd + 2*o.tc + 4*o.aa + 8*o.opcode + 128*o.qr, |
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|
359 o.rcode + 16*o.z + 128*o.ra, |
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|
360 highbyte(o.qdcount), o.qdcount %0x100, |
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|
361 highbyte(o.ancount), o.ancount %0x100, |
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changeset
|
362 highbyte(o.nscount), o.nscount %0x100, |
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
363 highbyte(o.arcount), o.arcount %0x100 |
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
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|
364 ); |
337 | 365 |
2069
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|
366 return header, o.id; |
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|
367 end |
337 | 368 |
369 | |
2069
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|
370 local function encodeName(name) -- - - - - - - - - - - - - - - - encodeName |
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changeset
|
371 local t = {}; |
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Waqas Hussain <waqas20@gmail.com>
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|
372 for part in string.gmatch(name, '[^.]+') do |
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Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
373 append(t, string.char(string.len(part))); |
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Waqas Hussain <waqas20@gmail.com>
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changeset
|
374 append(t, part); |
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diff
changeset
|
375 end |
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changeset
|
376 append(t, string.char(0)); |
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
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|
377 return table.concat(t); |
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Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
378 end |
337 | 379 |
380 | |
2069
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Waqas Hussain <waqas20@gmail.com>
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changeset
|
381 local function encodeQuestion(qname, qtype, qclass) -- - - - encodeQuestion |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
382 qname = encodeName(qname); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
383 qtype = dns.typecode[qtype or 'a']; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
384 qclass = dns.classcode[qclass or 'in']; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
385 return qname..qtype..qclass; |
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Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
386 end |
337 | 387 |
388 | |
2069
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Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
389 function resolver:byte(len) -- - - - - - - - - - - - - - - - - - - - - byte |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
390 len = len or 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
391 local offset = self.offset; |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
392 local last = offset + len - 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
393 if last > #self.packet then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
394 error(string.format('out of bounds: %i>%i', last, #self.packet)); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
395 end |
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Waqas Hussain <waqas20@gmail.com>
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diff
changeset
|
396 self.offset = offset + len; |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
397 return string.byte(self.packet, offset, last); |
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
398 end |
337 | 399 |
400 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
401 function resolver:word() -- - - - - - - - - - - - - - - - - - - - - - word |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
402 local b1, b2 = self:byte(2); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
403 return 0x100*b1 + b2; |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
404 end |
337 | 405 |
406 | |
407 function resolver:dword () -- - - - - - - - - - - - - - - - - - - - - dword | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
408 local b1, b2, b3, b4 = self:byte(4); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
409 --print('dword', b1, b2, b3, b4); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
410 return 0x1000000*b1 + 0x10000*b2 + 0x100*b3 + b4; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
411 end |
337 | 412 |
413 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
414 function resolver:sub(len) -- - - - - - - - - - - - - - - - - - - - - - sub |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
415 len = len or 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
416 local s = string.sub(self.packet, self.offset, self.offset + len - 1); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
417 self.offset = self.offset + len; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
418 return s; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
419 end |
337 | 420 |
421 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
422 function resolver:header(force) -- - - - - - - - - - - - - - - - - - header |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
423 local id = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
424 --print(string.format(':header id %x', id)); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
425 if not self.active[id] and not force then return nil; end |
337 | 426 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
427 local h = { id = id }; |
337 | 428 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
429 local b1, b2 = self:byte(2); |
337 | 430 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
431 h.rd = b1 %2; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
432 h.tc = b1 /2%2; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
433 h.aa = b1 /4%2; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
434 h.opcode = b1 /8%16; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
435 h.qr = b1 /128; |
337 | 436 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
437 h.rcode = b2 %16; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
438 h.z = b2 /16%8; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
439 h.ra = b2 /128; |
337 | 440 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
441 h.qdcount = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
442 h.ancount = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
443 h.nscount = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
444 h.arcount = self:word(); |
337 | 445 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
446 for k,v in pairs(h) do h[k] = v-v%1; end |
337 | 447 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
448 return h; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
449 end |
337 | 450 |
451 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
452 function resolver:name() -- - - - - - - - - - - - - - - - - - - - - - name |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
453 local remember, pointers = nil, 0; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
454 local len = self:byte(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
455 local n = {}; |
4422
c25dee24623f
s2smanager, net.dns: Fix handling for NXNAME and SRV target of "."
Florian Zeitz <florob@babelmonkeys.de>
parents:
4400
diff
changeset
|
456 if len == 0 then return "." end -- Root label |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
457 while len > 0 do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
458 if len >= 0xc0 then -- name is "compressed" |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
459 pointers = pointers + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
460 if pointers >= 20 then error('dns error: 20 pointers'); end; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
461 local offset = ((len-0xc0)*0x100) + self:byte(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
462 remember = remember or self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
463 self.offset = offset + 1; -- +1 for lua |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
464 else -- name is not compressed |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
465 append(n, self:sub(len)..'.'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
466 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
467 len = self:byte(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
468 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
469 self.offset = remember or self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
470 return table.concat(n); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
471 end |
337 | 472 |
473 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
474 function resolver:question() -- - - - - - - - - - - - - - - - - - question |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
475 local q = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
476 q.name = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
477 q.type = dns.type[self:word()]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
478 q.class = dns.class[self:word()]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
479 return q; |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
480 end |
337 | 481 |
482 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
483 function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
484 local b1, b2, b3, b4 = self:byte(4); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
485 rr.a = string.format('%i.%i.%i.%i', b1, b2, b3, b4); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
486 end |
337 | 487 |
8427
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
488 if have_util_net and util_net.ntop then |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
489 function resolver:A(rr) |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
490 rr.a = util_net.ntop(self:sub(4)); |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
491 end |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
492 end |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
493 |
4267
29d7eb6ff62c
net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents:
4251
diff
changeset
|
494 function resolver:AAAA(rr) |
29d7eb6ff62c
net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents:
4251
diff
changeset
|
495 local addr = {}; |
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
changeset
|
496 for _ = 1, rr.rdlength, 2 do |
4267
29d7eb6ff62c
net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents:
4251
diff
changeset
|
497 local b1, b2 = self:byte(2); |
29d7eb6ff62c
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Matthew Wild <mwild1@gmail.com>
parents:
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diff
changeset
|
498 table.insert(addr, ("%02x%02x"):format(b1, b2)); |
29d7eb6ff62c
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parents:
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diff
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|
499 end |
4373 | 500 addr = table.concat(addr, ":"):gsub("%f[%x]0+(%x)","%1"); |
501 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
|
502 for item in addr:gmatch(":[0:]+:[0:]+:") do |
4373 | 503 table.insert(zeros, item) |
504 end | |
505 if #zeros == 0 then | |
506 rr.aaaa = addr; | |
507 return | |
508 elseif #zeros > 1 then | |
509 table.sort(zeros, function(a, b) return #a > #b end); | |
510 end | |
511 rr.aaaa = addr:gsub(zeros[1], "::", 1):gsub("^0::", "::"):gsub("::0$", "::"); | |
4267
29d7eb6ff62c
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parents:
4251
diff
changeset
|
512 end |
337 | 513 |
8427
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
514 if have_util_net and util_net.ntop then |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
515 function resolver:AAAA(rr) |
1371518f70ff
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Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
516 rr.aaaa = util_net.ntop(self:sub(16)); |
1371518f70ff
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Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
517 end |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
518 end |
1371518f70ff
net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents:
8263
diff
changeset
|
519 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
520 function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
521 rr.cname = self:name(); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
522 end |
337 | 523 |
524 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
525 function resolver:MX(rr) -- - - - - - - - - - - - - - - - - - - - - - - MX |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
526 rr.pref = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
527 rr.mx = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
528 end |
337 | 529 |
530 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
531 function resolver:LOC_nibble_power() -- - - - - - - - - - LOC_nibble_power |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
532 local b = self:byte(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
533 --print('nibbles', ((b-(b%0x10))/0x10), (b%0x10)); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
534 return ((b-(b%0x10))/0x10) * (10^(b%0x10)); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
535 end |
337 | 536 |
537 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
538 function resolver:LOC(rr) -- - - - - - - - - - - - - - - - - - - - - - LOC |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
539 rr.version = self:byte(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
540 if rr.version == 0 then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
541 rr.loc = rr.loc or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
542 rr.loc.size = self:LOC_nibble_power(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
543 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
|
544 rr.loc.vert_pre = self:LOC_nibble_power(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
545 rr.loc.latitude = self:dword(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
546 rr.loc.longitude = self:dword(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
547 rr.loc.altitude = self:dword(); |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
548 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
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diff
changeset
|
549 end |
337 | 550 |
551 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
552 local function LOC_tostring_degrees(f, pos, neg) -- - - - - - - - - - - - - |
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
553 f = f - 0x80000000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
554 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
|
555 local deg, min, msec; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
556 msec = f%60000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
557 f = (f-msec)/60000; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
558 min = f%60; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
559 deg = (f-min)/60; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
560 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
|
561 end |
337 | 562 |
563 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
564 function resolver.LOC_tostring(rr) -- - - - - - - - - - - - - LOC_tostring |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
565 local t = {}; |
337 | 566 |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
567 --[[ |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
568 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
|
569 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
|
570 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
571 --]] |
337 | 572 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
573 append(t, string.format( |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
574 '%s %s %.2fm %.2fm %.2fm %.2fm', |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
575 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
|
576 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
|
577 (rr.loc.altitude - 10000000) / 100, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
578 rr.loc.size / 100, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
579 rr.loc.horiz_pre / 100, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
580 rr.loc.vert_pre / 100 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
581 )); |
337 | 582 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
583 return table.concat(t); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
584 end |
337 | 585 |
586 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
587 function resolver:NS(rr) -- - - - - - - - - - - - - - - - - - - - - - - NS |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
588 rr.ns = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
589 end |
337 | 590 |
591 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
592 function resolver:SOA(rr) -- - - - - - - - - - - - - - - - - - - - - - SOA |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
593 end |
337 | 594 |
595 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
596 function resolver:SRV(rr) -- - - - - - - - - - - - - - - - - - - - - - SRV |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
597 rr.srv = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
598 rr.srv.priority = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
599 rr.srv.weight = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
600 rr.srv.port = self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
601 rr.srv.target = self:name(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
602 end |
337 | 603 |
3513
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
604 function resolver:PTR(rr) |
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
605 rr.ptr = self:name(); |
4cf5962747fc
net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents:
3512
diff
changeset
|
606 end |
337 | 607 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
608 function resolver:TXT(rr) -- - - - - - - - - - - - - - - - - - - - - - TXT |
4251 | 609 rr.txt = self:sub (self:byte()); |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
610 end |
337 | 611 |
612 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
613 function resolver:rr() -- - - - - - - - - - - - - - - - - - - - - - - - rr |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
614 local rr = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
615 setmetatable(rr, rr_metatable); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
616 rr.name = self:name(self); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
617 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
|
618 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
|
619 rr.ttl = 0x10000*self:word() + self:word(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
620 rr.rdlength = self:word(); |
337 | 621 |
8263
9b52b1f19b51
net.dns: Correctly apply lower bound of RTT (thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents:
8164
diff
changeset
|
622 rr.tod = self.time + math.max(rr.ttl, 1); |
337 | 623 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
624 local remember = self.offset; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
625 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
|
626 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
|
627 self.offset = remember; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
628 rr.rdata = self:sub(rr.rdlength); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
629 return rr; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
630 end |
337 | 631 |
632 | |
633 function resolver:rrs (count) -- - - - - - - - - - - - - - - - - - - - - rrs | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
634 local rrs = {}; |
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
changeset
|
635 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
|
636 return rrs; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
637 end |
337 | 638 |
639 | |
2069
72357b1c6d88
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Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
640 function resolver:decode(packet, force) -- - - - - - - - - - - - - - decode |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
641 self.packet, self.offset = packet, 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
642 local header = self:header(force); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
643 if not header then return nil; end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
644 local response = { header = header }; |
337 | 645 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
646 response.question = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
647 local offset = self.offset; |
7500
4c519444d4a2
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7480
diff
changeset
|
648 for _ = 1, response.header.qdcount do |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
649 append(response.question, self:question()); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
650 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
651 response.question.raw = string.sub(self.packet, offset, self.offset - 1); |
337 | 652 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
653 if not force then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
654 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
|
655 self.active[response.header.id] = nil; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
656 return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
657 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
658 end |
337 | 659 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
660 response.answer = self:rrs(response.header.ancount); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
661 response.authority = self:rrs(response.header.nscount); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
662 response.additional = self:rrs(response.header.arcount); |
337 | 663 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
664 return response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
665 end |
337 | 666 |
667 | |
668 -- socket layer -------------------------------------------------- socket layer | |
669 | |
670 | |
10958
25680ece29c2
net.dns: Increase backoff delays
Matthew Wild <mwild1@gmail.com>
parents:
10957
diff
changeset
|
671 resolver.delays = { 1, 2, 3, 5 }; |
337 | 672 |
10957
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
673 resolver.jitter = have_timer and default_jitter or nil; |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
674 resolver.retry_jitter = have_timer and default_retry_jitter or nil; |
337 | 675 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
676 function resolver:addnameserver(address) -- - - - - - - - - - addnameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
677 self.server = self.server or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
678 append(self.server, address); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
679 end |
337 | 680 |
681 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
682 function resolver:setnameserver(address) -- - - - - - - - - - setnameserver |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
683 self.server = {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
684 self:addnameserver(address); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
685 end |
337 | 686 |
687 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
688 function resolver:adddefaultnameservers() -- - - - - adddefaultnameservers |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
689 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
|
690 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
|
691 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
|
692 self:addnameserver(server); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
693 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
694 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
695 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
|
696 -- 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
|
697 self:addnameserver("208.67.222.222"); |
2742
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2741
diff
changeset
|
698 self:addnameserver("208.67.220.220"); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
699 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
700 else -- posix |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
701 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
|
702 if resolv_conf then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
703 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
|
704 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
|
705 :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
|
706 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
|
707 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
|
708 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
|
709 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
|
710 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
|
711 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
712 end |
9952
6402bc76f51a
net.dns: Close resolv.conf handle when done (fixes #1342)
Kim Alvefur <zash@zash.se>
parents:
8909
diff
changeset
|
713 resolv_conf:close(); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
714 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
715 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
|
716 -- 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
|
717 self:addnameserver("127.0.0.1"); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
718 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
719 end |
399
93b6587d9afb
Added temporary fix for srv on windows: using opendns nameservers
Waqas Hussain <waqas20@gmail.com>
parents:
379
diff
changeset
|
720 end |
337 | 721 |
722 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
723 function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
724 self.socket = self.socket or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
725 self.socketset = self.socketset or {}; |
337 | 726 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
727 local sock = self.socket[servernum]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
728 if sock then return sock; end |
337 | 729 |
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
|
730 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
|
731 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
|
732 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
|
733 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
|
734 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
|
735 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
|
736 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
|
737 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
|
738 if not sock then |
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
739 return nil, err; |
6e22b0cf3d72
net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents:
3747
diff
changeset
|
740 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
741 sock:settimeout(0); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
742 -- 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
|
743 self.socket[servernum] = sock; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
744 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
|
745 -- 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
|
746 -- 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
|
747 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
|
748 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
|
749 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
|
750 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
|
751 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
|
752 end |
337 | 753 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
754 function resolver:voidsocket(sock) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
755 if self.socket[sock] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
756 self.socketset[self.socket[sock]] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
757 self.socket[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
758 elseif self.socketset[sock] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
759 self.socket[self.socketset[sock]] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
760 self.socketset[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
761 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
|
762 sock:close(); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
763 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
764 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
765 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
|
766 self.socket_wrapper = func; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
767 end |
337 | 768 |
769 | |
770 function resolver:closeall () -- - - - - - - - - - - - - - - - - - closeall | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
771 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
|
772 self.socket[i] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
773 self.socketset[sock] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
774 sock:close(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
775 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
776 end |
337 | 777 |
778 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
779 function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
780 --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
|
781 local qname, qtype, qclass = standardize(rr.name, rr.type, rr.class); |
337 | 782 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
783 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
|
784 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
|
785 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
|
786 --print('remember all', all); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
787 if all then append(all, rr); end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
788 end |
337 | 789 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
790 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
|
791 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
|
792 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
|
793 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
|
794 rrs[rr[qtype:lower()]] = true; |
460584257cc9
net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents:
6310
diff
changeset
|
795 append(rrs, rr); |
460584257cc9
net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents:
6310
diff
changeset
|
796 end |
337 | 797 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
798 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
|
799 end |
337 | 800 |
801 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
802 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
|
803 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
|
804 end |
337 | 805 |
806 | |
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
|
807 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
|
808 qname, qtype, qclass = standardize(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
809 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
|
810 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
|
811 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
|
812 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
|
813 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
|
814 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
|
815 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
816 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
|
817 set(self.cache, qclass, qtype, qname, nil); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
818 return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
819 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
|
820 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
|
821 return rrs; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
822 end |
337 | 823 |
824 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
825 function resolver:purge(soft) -- - - - - - - - - - - - - - - - - - - purge |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
826 if soft == 'soft' then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
827 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
828 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
|
829 for type,names in pairs(types) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
830 for name,rrs in pairs(names) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
831 prune(rrs, self.time, 'soft') |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
832 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
833 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
834 end |
4400
ac651265766c
net.dns: Preserve metatable on manual cache purge
Matthew Wild <mwild1@gmail.com>
parents:
4373
diff
changeset
|
835 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
|
836 end |
337 | 837 |
838 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
839 function resolver:query(qname, qtype, qclass) -- - - - - - - - - - -- query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
840 qname, qtype, qclass = standardize(qname, qtype, qclass) |
337 | 841 |
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
|
842 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
|
843 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
|
844 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
|
845 -- 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
|
846 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
|
847 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
|
848 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
|
849 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
850 if not self.server then self:adddefaultnameservers(); end |
337 | 851 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
852 local question = encodeQuestion(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
853 local peek = self:peek (qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
854 if peek then return peek; end |
337 | 855 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
856 local header, id = encodeHeader(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
857 --print ('query id', id, qclass, qtype, qname) |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
858 local o = { |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
859 packet = header..question, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
860 server = self.best_server, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
861 delay = 1, |
10957
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
862 retry = socket.gettime() + self.delays[1]; |
10956
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
863 qclass = qclass; |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
864 qtype = qtype; |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
865 qname = qname; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
866 }; |
337 | 867 |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
868 -- remember the query |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
869 self.active[id] = self.active[id] or {}; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
870 self.active[id][question] = o; |
337 | 871 |
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
872 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
|
873 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
|
874 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
|
875 end |
10957
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
876 if self.jitter then |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
877 timer.add_task(math.random()*self.jitter, function () |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
878 conn:send(o.packet); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
879 end); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
880 else |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
881 conn:send(o.packet); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
882 end |
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
|
883 |
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
|
884 -- 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
|
885 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
|
886 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
|
887 end |
12387
05c250fa335a
Spelling: Fix various spelling mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
parents:
10976
diff
changeset
|
888 |
10664
c2b79b44ded7
net.dns: Handle being loaded outside of Prosody
Kim Alvefur <zash@zash.se>
parents:
9952
diff
changeset
|
889 if have_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
|
890 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
|
891 local i = 1; |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
892 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
|
893 if get(self.wanted, qclass, qtype, qname, co) then |
10955
7bcfac630b65
net.dns: Add some debug logging
Matthew Wild <mwild1@gmail.com>
parents:
10664
diff
changeset
|
894 log("debug", "DNS request timeout %d/%d", i, num_servers) |
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
|
895 i = i + 1; |
10956
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
896 self:servfail(self.socket[o.server]); |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
897 -- end |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
898 end |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
899 -- Still outstanding? (i.e. retried) |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
900 if get(self.wanted, qclass, qtype, qname, co) then |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
901 return self.timeout; -- Then wait |
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
|
902 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
|
903 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
|
904 end |
3955
a096700d23d9
net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents:
3954
diff
changeset
|
905 return true; |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
906 end |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
907 |
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
|
908 function resolver:servfail(sock, err) |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
909 -- Resend all queries for this server |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
910 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
911 local num = self.socketset[sock] |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
912 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
913 -- Socket is dead now |
6508
4a28b8320d7f
net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents:
6463
diff
changeset
|
914 sock = self:voidsocket(sock); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
915 |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
916 -- 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
|
917 self.time = socket.gettime(); |
10955
7bcfac630b65
net.dns: Add some debug logging
Matthew Wild <mwild1@gmail.com>
parents:
10664
diff
changeset
|
918 log("debug", "servfail %d (of %d)", num, #self.server); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
919 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
|
920 for question,o in pairs(queries) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
921 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
|
922 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
|
923 if o.server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
924 o.server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
925 end |
337 | 926 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
927 o.retries = (o.retries or 0) + 1; |
10956
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
928 local retried; |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
929 if o.retries < #self.server then |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
930 sock, err = self:getsocket(o.server); |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
931 if sock then |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
932 retried = true; |
10957
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
933 if self.retry_jitter then |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
934 local delay = self.delays[((o.retries-1)%#self.delays)+1] + (math.random()*self.retry_jitter); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
935 log("debug", "retry %d in %0.2fs", o.retries, delay); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
936 timer.add_task(delay, function () |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
937 sock:send(o.packet); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
938 end); |
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
939 else |
10956
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
940 log("debug", "retry %d (immediate)", o.retries); |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
941 sock:send(o.packet); |
10957
8902cecbdd39
net.dns: Add jitter to spread queries and reduce failures due to congestion
Matthew Wild <mwild1@gmail.com>
parents:
10956
diff
changeset
|
942 end |
10956
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
943 end |
12387
05c250fa335a
Spelling: Fix various spelling mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
parents:
10976
diff
changeset
|
944 end |
10956
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
945 if not retried then |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
946 log("debug", 'tried all servers, giving up'); |
03a09fa02e8e
net.dns: Fix timeout retry logic
Matthew Wild <mwild1@gmail.com>
parents:
10955
diff
changeset
|
947 self:cancel(o.qclass, o.qtype, o.qname); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
948 queries[question] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
949 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
950 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
951 end |
5266
5c3a3ef6b769
net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents:
4422
diff
changeset
|
952 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
|
953 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
|
954 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
955 end |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
956 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
957 if num == self.best_server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
958 self.best_server = self.best_server + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
959 if self.best_server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
960 -- Exhausted all servers, try first again |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
961 self.best_server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
962 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
963 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
|
964 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
|
965 end |
337 | 966 |
3327
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
967 function resolver:settimeout(seconds) |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
968 self.timeout = seconds; |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
969 end |
b447682f2a8d
net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents:
3326
diff
changeset
|
970 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
971 function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
972 --print('receive'); print(self.socket); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
973 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
974 rset = rset or self.socket; |
337 | 975 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
976 local response; |
7469
363e4a5e9b0a
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7322
diff
changeset
|
977 for _, sock in pairs(rset) do |
337 | 978 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
979 if self.socketset[sock] then |
2619
04158baefa34
net.dns: Update for new socket API
Matthew Wild <mwild1@gmail.com>
parents:
2578
diff
changeset
|
980 local packet = sock:receive(); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
981 if packet then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
982 response = self:decode(packet); |
2278
8c10f13c0c20
modulemanager, net.dns: Remove trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2082
diff
changeset
|
983 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
|
984 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
|
985 --print('received response'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
986 --self.print(response); |
337 | 987 |
7469
363e4a5e9b0a
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7322
diff
changeset
|
988 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
|
989 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
|
990 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
|
991 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
992 end |
337 | 993 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
994 -- retire the query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
995 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
|
996 queries[response.question.raw] = nil; |
12387
05c250fa335a
Spelling: Fix various spelling mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
parents:
10976
diff
changeset
|
997 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
998 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
|
999 if not next(self.active) then self:closeall(); end |
337 | 1000 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1001 -- 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
|
1002 local q = response.question[1]; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1003 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
|
1004 if cos then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1005 for co in pairs(cos) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1006 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
|
1007 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1008 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
|
1009 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1010 end |
12387
05c250fa335a
Spelling: Fix various spelling mistakes (thanks timeless)
Kim Alvefur <zash@zash.se>
parents:
10976
diff
changeset
|
1011 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1012 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1013 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1014 end |
337 | 1015 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1016 return response; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1017 end |
337 | 1018 |
1019 | |
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
|
1020 function resolver:feed(sock, packet, force) |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1021 --print('receive'); print(self.socket); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1022 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
|
1023 |
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
|
1024 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
|
1025 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
|
1026 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
|
1027 --print('received response'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1028 --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
|
1029 |
7469
363e4a5e9b0a
net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents:
7322
diff
changeset
|
1030 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
|
1031 self:remember(rr, rr.type); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1032 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1033 |
8898
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
1034 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
|
1035 self:remember(rr, rr.type); |
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
1036 end |
e6ba0e5260b4
net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents:
8897
diff
changeset
|
1037 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1038 -- retire the query |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1039 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
|
1040 queries[response.question.raw] = nil; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1041 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
|
1042 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
|
1043 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1044 -- was the query on the wanted list? |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1045 local q = response.question[1]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1046 if q then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1047 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
|
1048 if cos then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1049 for co in pairs(cos) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1050 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
|
1051 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1052 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
|
1053 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1054 end |
2742
6c0a081cd766
net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents:
2741
diff
changeset
|
1055 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1056 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1057 return response; |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1058 end |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1059 |
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
|
1060 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
|
1061 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
|
1062 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
|
1063 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
|
1064 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
|
1065 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
|
1066 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
|
1067 end |
e69fafc14491
net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents:
896
diff
changeset
|
1068 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1069 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1070 function resolver:pulse() -- - - - - - - - - - - - - - - - - - - - - pulse |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1071 --print(':pulse'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1072 while self:receive() do end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1073 if not next(self.active) then return nil; end |
337 | 1074 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1075 self.time = socket.gettime(); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1076 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
|
1077 for question,o in pairs(queries) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1078 if self.time >= o.retry then |
337 | 1079 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1080 o.server = o.server + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1081 if o.server > #self.server then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1082 o.server = 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1083 o.delay = o.delay + 1; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1084 end |
337 | 1085 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1086 if o.delay > #self.delays then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1087 --print('timeout'); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1088 queries[question] = nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1089 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
|
1090 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
|
1091 else |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1092 --print('retry', o.server, o.delay); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1093 local _a = self.socket[o.server]; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1094 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
|
1095 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
|
1096 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1097 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1098 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1099 end |
337 | 1100 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1101 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
|
1102 return nil; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1103 end |
337 | 1104 |
1105 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1106 function resolver:lookup(qname, qtype, qclass) -- - - - - - - - - - lookup |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1107 self:query (qname, qtype, qclass) |
3049
e54774bd73a7
net/dns: Fix socket.select timeout.
Brian Cully <bjc@junctionnetworks.com>
parents:
2742
diff
changeset
|
1108 while self:pulse() do |
3540
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
1109 local recvt = {} |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
1110 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
|
1111 recvt[i] = s |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
1112 end |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
1113 socket.select(recvt, nil, 4) |
bc139431830b
Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents:
3513
diff
changeset
|
1114 end |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1115 --print(self.cache); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1116 return self:peek(qname, qtype, qclass); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1117 end |
337 | 1118 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1119 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
|
1120 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
|
1121 end |
337 | 1122 |
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1123 function resolver:tohostname(ip) |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1124 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
|
1125 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1126 |
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1127 --print ---------------------------------------------------------------- print |
337 | 1128 |
1129 | |
1130 local hints = { -- - - - - - - - - - - - - - - - - - - - - - - - - - - hints | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1131 qr = { [0]='query', 'response' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1132 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
|
1133 aa = { [0]='non-authoritative', 'authoritative' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1134 tc = { [0]='complete', 'truncated' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1135 rd = { [0]='recursion not desired', 'recursion desired' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1136 ra = { [0]='recursion not available', 'recursion available' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1137 z = { [0]='(reserved)' }, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1138 rcode = { [0]='no error', 'format error', 'server failure', 'name error', 'not implemented' }, |
337 | 1139 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1140 type = dns.type, |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1141 class = dns.class |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1142 }; |
337 | 1143 |
1144 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1145 local function hint(p, s) -- - - - - - - - - - - - - - - - - - - - - - hint |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1146 return (hints[s] and hints[s][p[s]]) or ''; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1147 end |
337 | 1148 |
1149 | |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1150 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
|
1151 for _, s in pairs { 'id', 'qr', 'opcode', 'aa', 'tc', 'rd', 'ra', 'z', |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1152 'rcode', 'qdcount', 'ancount', 'nscount', 'arcount' } do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1153 print( string.format('%-30s', 'header.'..s), response.header[s], hint(response.header, s) ); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1154 end |
337 | 1155 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1156 for i,question in ipairs(response.question) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1157 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
|
1158 print(string.format ('question[%i].type ', i), question.type); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1159 print(string.format ('question[%i].class ', i), question.class); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1160 end |
337 | 1161 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1162 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
|
1163 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
|
1164 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
|
1165 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
|
1166 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
|
1167 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
|
1168 print(string.format('%-30s', tmp), rr[t], hint(rr, t)); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1169 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1170 for j,t in pairs(rr) do |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1171 if not common[j] then |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1172 tmp = string.format('%s[%i].%s', s, i, j); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1173 print(string.format('%-30s %s', tostring(tmp), tostring(t))); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1174 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1175 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1176 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1177 end |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1178 end |
337 | 1179 |
1180 | |
1181 -- module api ------------------------------------------------------ module api | |
1182 | |
1183 | |
1184 function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver | |
6310
d232bb1bbe1e
net.dns: Remove unused obsolete code
Matthew Wild <mwild1@gmail.com>
parents:
6309
diff
changeset
|
1185 local r = { active = {}, cache = {}, unsorted = {}, wanted = {}, best_server = 1 }; |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1186 setmetatable (r, resolver); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1187 setmetatable (r.cache, cache_metatable); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1188 setmetatable (r.unsorted, { __mode = 'kv' }); |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1189 return r; |
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1190 end |
337 | 1191 |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1192 local _resolver = dns.resolver(); |
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1193 dns._resolver = _resolver; |
10976
540f1bc5f082
net.dns: Disable jitter for default resolver (used by blocking dns.lookup() calls)
Matthew Wild <mwild1@gmail.com>
parents:
10959
diff
changeset
|
1194 _resolver.jitter, _resolver.retry_jitter = false, false; |
337 | 1195 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1196 function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1197 return _resolver:lookup(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1198 end |
337 | 1199 |
3746
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1200 function dns.tohostname(...) |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1201 return _resolver:tohostname(...); |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1202 end |
9719316c854e
net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents:
3719
diff
changeset
|
1203 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1204 function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1205 return _resolver:purge(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1206 end |
337 | 1207 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1208 function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1209 return _resolver:peek(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1210 end |
337 | 1211 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1212 function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1213 return _resolver:query(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1214 end |
337 | 1215 |
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1216 function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1217 return _resolver:feed(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1218 end |
869
09019c452709
net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents:
759
diff
changeset
|
1219 |
2575
8f4d69940132
net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents:
2574
diff
changeset
|
1220 function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel |
2573
60493186fef6
net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents:
2425
diff
changeset
|
1221 return _resolver:cancel(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1222 end |
337 | 1223 |
3328
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1224 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
|
1225 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
|
1226 end |
5ac4fbbfb74d
net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents:
3327
diff
changeset
|
1227 |
5566
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1228 function dns.cache() |
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1229 return _resolver.cache; |
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1230 end |
74ae3e7e8779
net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents:
5340
diff
changeset
|
1231 |
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
|
1232 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
|
1233 return _resolver:socket_wrapper_set(...); |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1234 end |
337 | 1235 |
2069
72357b1c6d88
net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents:
2068
diff
changeset
|
1236 return dns; |