Annotate

net/dns.lua @ 8907:b7b960d30eef

Backed out changeset eae606b9266c: Used a lot of memory
author Kim Alvefur <zash@zash.se>
date Sun, 10 Jun 2018 17:37:06 +0200
parent 8901:eae606b9266c
child 8908:144666d0ad2f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- Prosody IM
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2 -- This file is included with Prosody IM. It has modifications,
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3 -- which are hereby placed in the public domain.
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6 -- todo: quick (default) header generation
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7 -- todo: nxdomain, error handling
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8 -- todo: cache results of encodeName
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11 -- reference: http://tools.ietf.org/html/rfc1035
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12 -- reference: http://tools.ietf.org/html/rfc1876 (LOC)
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15 local socket = require "socket";
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16 local timer = require "util.timer";
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17 local new_ip = require "util.ip".new_ip;
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19 local _, windows = pcall(require, "util.windows");
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20 local is_windows = (_ and windows) or os.getenv("WINDIR");
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22 local coroutine, io, math, string, table =
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23 coroutine, io, math, string, table;
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25 local ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type =
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26 ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type;
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28 local ztact = { -- public domain 20080404 lua@ztact.com
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29 get = function(parent, ...)
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30 local len = select('#', ...);
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31 for i=1,len do
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32 parent = parent[select(i, ...)];
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33 if parent == nil then break; end
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34 end
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35 return parent;
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36 end;
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37 set = function(parent, ...)
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38 local len = select('#', ...);
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39 local key, value = select(len-1, ...);
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40 local cutpoint, cutkey;
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41
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42 for i=1,len-2 do
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43 local key = select (i, ...)
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44 local child = parent[key]
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46 if value == nil then
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47 if child == nil then
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48 return;
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49 elseif next(child, next(child)) then
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50 cutpoint = nil; cutkey = nil;
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51 elseif cutpoint == nil then
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52 cutpoint = parent; cutkey = key;
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53 end
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54 elseif child == nil then
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55 child = {};
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56 parent[key] = child;
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57 end
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58 parent = child
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59 end
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60
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61 if value == nil and cutpoint then
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62 cutpoint[cutkey] = nil;
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63 else
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64 parent[key] = value;
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65 return value;
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66 end
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67 end;
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68 };
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69 local get, set = ztact.get, ztact.set;
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70
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71 local default_timeout = 15;
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72
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73 -------------------------------------------------- module dns
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74 local _ENV = nil;
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75 local dns = {};
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77
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78 -- dns type & class codes ------------------------------ dns type & class codes
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80
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81 local append = table.insert
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82
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83
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84 local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte
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85 return (i-(i%0x100))/0x100;
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86 end
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88
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89 local function augment (t) -- - - - - - - - - - - - - - - - - - - - augment
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90 local a = {};
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91 for i,s in pairs(t) do
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92 a[i] = s;
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93 a[s] = s;
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94 a[string.lower(s)] = s;
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95 end
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96 return a;
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97 end
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98
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99
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100 local function encode (t) -- - - - - - - - - - - - - - - - - - - - - encode
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101 local code = {};
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102 for i,s in pairs(t) do
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103 local word = string.char(highbyte(i), i%0x100);
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104 code[i] = word;
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105 code[s] = word;
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106 code[string.lower(s)] = word;
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107 end
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108 return code;
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109 end
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110
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111
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112 dns.types = {
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113 'A', 'NS', 'MD', 'MF', 'CNAME', 'SOA', 'MB', 'MG', 'MR', 'NULL', 'WKS',
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114 'PTR', 'HINFO', 'MINFO', 'MX', 'TXT',
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115 [ 28] = 'AAAA', [ 29] = 'LOC', [ 33] = 'SRV',
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116 [252] = 'AXFR', [253] = 'MAILB', [254] = 'MAILA', [255] = '*' };
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117
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118
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119 dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' };
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121
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122 dns.type = augment (dns.types);
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123 dns.class = augment (dns.classes);
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124 dns.typecode = encode (dns.types);
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125 dns.classcode = encode (dns.classes);
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128
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parents: 2068
diff changeset
129 local function standardize(qname, qtype, qclass) -- - - - - - - standardize
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
130 if string.byte(qname, -1) ~= 0x2E then qname = qname..'.'; end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
131 qname = string.lower(qname);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
132 return qname, dns.type[qtype or 'A'], dns.class[qclass or 'IN'];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
133 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
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134
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
135
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
136 local function prune(rrs, time, soft) -- - - - - - - - - - - - - - - prune
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
137 time = time or socket.gettime();
6463
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
138 for i,rr in ipairs(rrs) do
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
139 if rr.tod then
8151
2c65f8be38aa net.dns: Simplify expiry calculation (fixes #919)
Kim Alvefur <zash@zash.se>
parents: 7093
diff changeset
140 if rr.tod < time then
6463
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
141 rrs[rr[rr.type:lower()]] = nil;
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
142 table.remove(rrs, i);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
143 return prune(rrs, time, soft); -- Re-iterate
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
144 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
145 elseif soft == 'soft' then -- What is this? I forget!
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
146 assert(rr.ttl == 0);
6463
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
147 rrs[rr[rr.type:lower()]] = nil;
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
148 table.remove(rrs, i);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
149 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
150 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
151 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
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152
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
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153
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
154 -- metatables & co. ------------------------------------------ metatables & co.
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
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155
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
156
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
157 local resolver = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
158 resolver.__index = resolver;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
159
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
160 resolver.timeout = default_timeout;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161
3747
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
162 local function default_rr_tostring(rr)
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
163 local rr_val = rr.type and rr[rr.type:lower()];
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
164 if type(rr_val) ~= "string" then
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
165 return "<UNKNOWN RDATA TYPE>";
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
166 end
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
167 return rr_val;
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
168 end
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
169
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
170 local special_tostrings = {
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
171 LOC = resolver.LOC_tostring;
4125
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
172 MX = function (rr)
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
173 return string.format('%2i %s', rr.pref, rr.mx);
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
174 end;
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
175 SRV = function (rr)
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
176 local s = rr.srv;
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
177 return string.format('%5d %5d %5d %s', s.priority, s.weight, s.port, s.target);
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
178 end;
3747
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
179 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
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180
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
181 local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
182 function rr_metatable.__tostring(rr)
3747
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
183 local rr_string = (special_tostrings[rr.type] or default_rr_tostring)(rr);
7d5b135bf268 net.dns: Clean up tostring() of returned records, as a result PTR records can now be tostring()'d
Matthew Wild <mwild1@gmail.com>
parents: 3746
diff changeset
184 return string.format('%2s %-5s %6i %-28s %s', rr.class, rr.type, rr.ttl, rr.name, rr_string);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
185 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
186
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
187
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
188 local rrs_metatable = {}; -- - - - - - - - - - - - - - - - - - rrs_metatable
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
189 function rrs_metatable.__tostring(rrs)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
190 local t = {};
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
191 for _, rr in ipairs(rrs) do
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
192 append(t, tostring(rr)..'\n');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
193 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
194 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
195 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
196
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
197
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
198 local cache_metatable = {}; -- - - - - - - - - - - - - - - - cache_metatable
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
199 function cache_metatable.__tostring(cache)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
200 local time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
201 local t = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
202 for class,types in pairs(cache) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
203 for type,names in pairs(types) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
204 for name,rrs in pairs(names) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
205 prune(rrs, time);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
206 append(t, tostring(rrs));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
207 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
208 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
209 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
210 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
211 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 -- packet layer -------------------------------------------------- packet layer
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
216
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
217 function dns.random(...) -- - - - - - - - - - - - - - - - - - - dns.random
6645
4f934cf03bc9 net.dns: Make sure argument to math.randomseed does not overflow a 32 bit *signed* int (blame Lua). Closes #439
Kim Alvefur <zash@zash.se>
parents: 6631
diff changeset
218 math.randomseed(math.floor(10000*socket.gettime()) % 0x80000000);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
219 dns.random = math.random;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
220 return dns.random(...);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
221 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
223
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
224 local function encodeHeader(o) -- - - - - - - - - - - - - - - encodeHeader
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
225 o = o or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
226 o.id = o.id or dns.random(0, 0xffff); -- 16b (random) id
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
227
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
228 o.rd = o.rd or 1; -- 1b 1 recursion desired
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
229 o.tc = o.tc or 0; -- 1b 1 truncated response
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
230 o.aa = o.aa or 0; -- 1b 1 authoritative response
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
231 o.opcode = o.opcode or 0; -- 4b 0 query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
232 -- 1 inverse query
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
233 -- 2 server status request
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
234 -- 3-15 reserved
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
235 o.qr = o.qr or 0; -- 1b 0 query, 1 response
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
236
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
237 o.rcode = o.rcode or 0; -- 4b 0 no error
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238 -- 1 format error
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239 -- 2 server failure
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 -- 3 name error
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
241 -- 4 not implemented
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
242 -- 5 refused
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243 -- 6-15 reserved
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
244 o.z = o.z or 0; -- 3b 0 resvered
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
245 o.ra = o.ra or 0; -- 1b 1 recursion available
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
247 o.qdcount = o.qdcount or 1; -- 16b number of question RRs
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
248 o.ancount = o.ancount or 0; -- 16b number of answers RRs
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
249 o.nscount = o.nscount or 0; -- 16b number of nameservers RRs
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
250 o.arcount = o.arcount or 0; -- 16b number of additional RRs
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
251
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
252 -- string.char() rounds, so prevent roundup with -0.4999
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
253 local header = string.char(
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
254 highbyte(o.id), o.id %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
255 o.rd + 2*o.tc + 4*o.aa + 8*o.opcode + 128*o.qr,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
256 o.rcode + 16*o.z + 128*o.ra,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
257 highbyte(o.qdcount), o.qdcount %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
258 highbyte(o.ancount), o.ancount %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
259 highbyte(o.nscount), o.nscount %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
260 highbyte(o.arcount), o.arcount %0x100
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
261 );
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
262
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
263 return header, o.id;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
264 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
265
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
266
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
267 local function encodeName(name) -- - - - - - - - - - - - - - - - encodeName
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
268 local t = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
269 for part in string.gmatch(name, '[^.]+') do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
270 append(t, string.char(string.len(part)));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
271 append(t, part);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
272 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
273 append(t, string.char(0));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
274 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
275 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
276
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
277
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
278 local function encodeQuestion(qname, qtype, qclass) -- - - - encodeQuestion
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
279 qname = encodeName(qname);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
280 qtype = dns.typecode[qtype or 'a'];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
281 qclass = dns.classcode[qclass or 'in'];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
282 return qname..qtype..qclass;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
283 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
284
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
285
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
286 function resolver:byte(len) -- - - - - - - - - - - - - - - - - - - - - byte
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
287 len = len or 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
288 local offset = self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
289 local last = offset + len - 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
290 if last > #self.packet then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
291 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
292 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
293 self.offset = offset + len;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
294 return string.byte(self.packet, offset, last);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
295 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
296
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
297
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
298 function resolver:word() -- - - - - - - - - - - - - - - - - - - - - - word
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
299 local b1, b2 = self:byte(2);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
300 return 0x100*b1 + b2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
301 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
302
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
303
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
304 function resolver:dword () -- - - - - - - - - - - - - - - - - - - - - dword
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
305 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
306 --print('dword', b1, b2, b3, b4);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
307 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
308 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
309
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
310
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
311 function resolver:sub(len) -- - - - - - - - - - - - - - - - - - - - - - sub
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
312 len = len or 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
313 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
314 self.offset = self.offset + len;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
315 return s;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
316 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
317
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
318
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
319 function resolver:header(force) -- - - - - - - - - - - - - - - - - - header
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
320 local id = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
321 --print(string.format(':header id %x', id));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
322 if not self.active[id] and not force then return nil; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
323
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
324 local h = { id = id };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
325
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
326 local b1, b2 = self:byte(2);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
327
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
328 h.rd = b1 %2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
329 h.tc = b1 /2%2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
330 h.aa = b1 /4%2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
331 h.opcode = b1 /8%16;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
332 h.qr = b1 /128;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
333
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
334 h.rcode = b2 %16;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
335 h.z = b2 /16%8;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
336 h.ra = b2 /128;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
337
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
338 h.qdcount = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
339 h.ancount = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
340 h.nscount = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
341 h.arcount = self:word();
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
342
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
343 for k,v in pairs(h) do h[k] = v-v%1; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
344
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
345 return h;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
346 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
347
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
348
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
349 function resolver:name() -- - - - - - - - - - - - - - - - - - - - - - name
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
350 local remember, pointers = nil, 0;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
351 local len = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
352 local n = {};
4422
c25dee24623f s2smanager, net.dns: Fix handling for NXNAME and SRV target of "."
Florian Zeitz <florob@babelmonkeys.de>
parents: 4400
diff changeset
353 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
354 while len > 0 do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
355 if len >= 0xc0 then -- name is "compressed"
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
356 pointers = pointers + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
357 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
358 local offset = ((len-0xc0)*0x100) + self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
359 remember = remember or self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
360 self.offset = offset + 1; -- +1 for lua
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
361 else -- name is not compressed
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
362 append(n, self:sub(len)..'.');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
363 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
364 len = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
365 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
366 self.offset = remember or self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
367 return table.concat(n);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
368 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
369
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
370
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
371 function resolver:question() -- - - - - - - - - - - - - - - - - - question
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
372 local q = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
373 q.name = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
374 q.type = dns.type[self:word()];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
375 q.class = dns.class[self:word()];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
376 return q;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
377 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
378
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
379
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
380 function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
381 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
382 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
383 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
384
4267
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
385 function resolver:AAAA(rr)
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
386 local addr = {};
7500
4c519444d4a2 net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7480
diff changeset
387 for _ = 1, rr.rdlength, 2 do
4267
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
388 local b1, b2 = self:byte(2);
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
389 table.insert(addr, ("%02x%02x"):format(b1, b2));
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
390 end
4373
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
391 addr = table.concat(addr, ":"):gsub("%f[%x]0+(%x)","%1");
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
392 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
393 for item in addr:gmatch(":[0:]+:[0:]+:") do
4373
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
394 table.insert(zeros, item)
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
395 end
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
396 if #zeros == 0 then
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
397 rr.aaaa = addr;
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
398 return
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
399 elseif #zeros > 1 then
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
400 table.sort(zeros, function(a, b) return #a > #b end);
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
401 end
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
402 rr.aaaa = addr:gsub(zeros[1], "::", 1):gsub("^0::", "::"):gsub("::0$", "::");
4267
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
403 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
404
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
405 function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
406 rr.cname = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
407 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
408
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
409
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
410 function resolver:MX(rr) -- - - - - - - - - - - - - - - - - - - - - - - MX
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
411 rr.pref = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
412 rr.mx = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
413 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
414
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
415
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
416 function resolver:LOC_nibble_power() -- - - - - - - - - - LOC_nibble_power
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
417 local b = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
418 --print('nibbles', ((b-(b%0x10))/0x10), (b%0x10));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
419 return ((b-(b%0x10))/0x10) * (10^(b%0x10));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
420 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
421
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
422
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
423 function resolver:LOC(rr) -- - - - - - - - - - - - - - - - - - - - - - LOC
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
424 rr.version = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
425 if rr.version == 0 then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
426 rr.loc = rr.loc or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
427 rr.loc.size = self:LOC_nibble_power();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
428 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
429 rr.loc.vert_pre = self:LOC_nibble_power();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
430 rr.loc.latitude = self:dword();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
431 rr.loc.longitude = self:dword();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
432 rr.loc.altitude = self:dword();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
433 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
434 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
435
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
436
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
437 local function LOC_tostring_degrees(f, pos, neg) -- - - - - - - - - - - - -
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
438 f = f - 0x80000000;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
439 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
440 local deg, min, msec;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
441 msec = f%60000;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
442 f = (f-msec)/60000;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
443 min = f%60;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
444 deg = (f-min)/60;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
445 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
446 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
447
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
448
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
449 function resolver.LOC_tostring(rr) -- - - - - - - - - - - - - LOC_tostring
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
450 local t = {};
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
451
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
452 --[[
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
453 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
454 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
455 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
456 --]]
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
457
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
458 append(t, string.format(
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
459 '%s %s %.2fm %.2fm %.2fm %.2fm',
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
460 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
461 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
462 (rr.loc.altitude - 10000000) / 100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
463 rr.loc.size / 100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
464 rr.loc.horiz_pre / 100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
465 rr.loc.vert_pre / 100
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
466 ));
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
467
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
468 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
469 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
470
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
471
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
472 function resolver:NS(rr) -- - - - - - - - - - - - - - - - - - - - - - - NS
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
473 rr.ns = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
474 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
475
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
476
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
477 function resolver:SOA(rr) -- - - - - - - - - - - - - - - - - - - - - - SOA
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
478 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
479
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
480
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
481 function resolver:SRV(rr) -- - - - - - - - - - - - - - - - - - - - - - SRV
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
482 rr.srv = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
483 rr.srv.priority = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
484 rr.srv.weight = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
485 rr.srv.port = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
486 rr.srv.target = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
487 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
488
3513
4cf5962747fc net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents: 3512
diff changeset
489 function resolver:PTR(rr)
4cf5962747fc net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents: 3512
diff changeset
490 rr.ptr = self:name();
4cf5962747fc net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents: 3512
diff changeset
491 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
492
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
493 function resolver:TXT(rr) -- - - - - - - - - - - - - - - - - - - - - - TXT
4251
96e9d5f9ab3b net.dns: Fix TXT records
Kim Alvefur <zash@zash.se>
parents: 4125
diff changeset
494 rr.txt = self:sub (self:byte());
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
495 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
496
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
497
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
498 function resolver:rr() -- - - - - - - - - - - - - - - - - - - - - - - - rr
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
499 local rr = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
500 setmetatable(rr, rr_metatable);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
501 rr.name = self:name(self);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
502 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
503 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
504 rr.ttl = 0x10000*self:word() + self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
505 rr.rdlength = self:word();
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
506
8263
9b52b1f19b51 net.dns: Correctly apply lower bound of RTT (thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 8164
diff changeset
507 rr.tod = self.time + math.max(rr.ttl, 1);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
508
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
509 local remember = self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
510 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
511 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
512 self.offset = remember;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
513 rr.rdata = self:sub(rr.rdlength);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
514 return rr;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
515 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
516
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
517
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
518 function resolver:rrs (count) -- - - - - - - - - - - - - - - - - - - - - rrs
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
519 local rrs = {};
7500
4c519444d4a2 net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7480
diff changeset
520 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
521 return rrs;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
522 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
523
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
524
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
525 function resolver:decode(packet, force) -- - - - - - - - - - - - - - decode
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
526 self.packet, self.offset = packet, 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
527 local header = self:header(force);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
528 if not header then return nil; end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
529 local response = { header = header };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
530
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
531 response.question = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
532 local offset = self.offset;
7500
4c519444d4a2 net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7480
diff changeset
533 for _ = 1, response.header.qdcount do
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
534 append(response.question, self:question());
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
535 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
536 response.question.raw = string.sub(self.packet, offset, self.offset - 1);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
537
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
538 if not force then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
539 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
540 self.active[response.header.id] = nil;
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
541 return nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
542 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
543 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
544
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
545 response.answer = self:rrs(response.header.ancount);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
546 response.authority = self:rrs(response.header.nscount);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
547 response.additional = self:rrs(response.header.arcount);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
548
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
549 return response;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
550 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
551
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
552
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
553 -- socket layer -------------------------------------------------- socket layer
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
554
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
555
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
556 resolver.delays = { 1, 3 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
557
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
558
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
559 function resolver:addnameserver(address) -- - - - - - - - - - addnameserver
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
560 self.server = self.server or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
561 append(self.server, address);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
562 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
563
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
564
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
565 function resolver:setnameserver(address) -- - - - - - - - - - setnameserver
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
566 self.server = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
567 self:addnameserver(address);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
568 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
569
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
570
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
571 function resolver:adddefaultnameservers() -- - - - - adddefaultnameservers
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
572 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
573 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
574 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
575 self:addnameserver(server);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
576 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
577 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
578 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
579 -- 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
580 self:addnameserver("208.67.222.222");
2742
6c0a081cd766 net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2741
diff changeset
581 self:addnameserver("208.67.220.220");
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
582 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
583 else -- posix
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
584 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
585 if resolv_conf then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
586 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
587 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
588 :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
589 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
590 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
591 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
592 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
593 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
594 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
595 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
596 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
597 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
598 -- 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
599 self:addnameserver("127.0.0.1");
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
600 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
601 end
399
93b6587d9afb Added temporary fix for srv on windows: using opendns nameservers
Waqas Hussain <waqas20@gmail.com>
parents: 379
diff changeset
602 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
603
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
604
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
605 function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
606 self.socket = self.socket or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
607 self.socketset = self.socketset or {};
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
608
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
609 local sock = self.socket[servernum];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
610 if sock then return sock; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
611
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
612 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
613 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
614 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
615 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
616 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
617 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
618 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
619 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
620 if not sock then
6e22b0cf3d72 net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents: 3747
diff changeset
621 return nil, err;
6e22b0cf3d72 net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents: 3747
diff changeset
622 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
623 sock:settimeout(0);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
624 -- 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
625 self.socket[servernum] = sock;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
626 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
627 -- 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
628 -- 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
629 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
630 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
631 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
632 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
633 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
634 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
635
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
636 function resolver:voidsocket(sock)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
637 if self.socket[sock] then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
638 self.socketset[self.socket[sock]] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
639 self.socket[sock] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
640 elseif self.socketset[sock] then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
641 self.socket[self.socketset[sock]] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
642 self.socketset[sock] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
643 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
644 sock:close();
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
645 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
646
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
647 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
648 self.socket_wrapper = func;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
649 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
650
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
651
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
652 function resolver:closeall () -- - - - - - - - - - - - - - - - - - closeall
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
653 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
654 self.socket[i] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
655 self.socketset[sock] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
656 sock:close();
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
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
659
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
660
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
661 function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
662 --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
663 local qname, qtype, qclass = standardize(rr.name, rr.type, rr.class);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
664
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
665 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
666 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
667 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
668 --print('remember all', all);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
669 if all then append(all, rr); end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
670 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
671
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
672 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
673 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
674 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
675 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
676 rrs[rr[qtype:lower()]] = true;
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
677 append(rrs, rr);
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
678 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
679
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
680 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
681 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
682
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
683
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
684 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
685 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
686 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
687
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
688
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
689 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
690 qname, qtype, qclass = standardize(qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
691 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
692 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
693 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
694 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
695 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
696 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
697 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
698 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
699 set(self.cache, qclass, qtype, qname, nil);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
700 return nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
701 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
702 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
703 return rrs;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
704 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
705
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
706
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
707 function resolver:purge(soft) -- - - - - - - - - - - - - - - - - - - purge
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
708 if soft == 'soft' then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
709 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
710 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
711 for type,names in pairs(types) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
712 for name,rrs in pairs(names) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
713 prune(rrs, self.time, 'soft')
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 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
716 end
4400
ac651265766c net.dns: Preserve metatable on manual cache purge
Matthew Wild <mwild1@gmail.com>
parents: 4373
diff changeset
717 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
718 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
719
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
720
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
721 function resolver:query(qname, qtype, qclass) -- - - - - - - - - - -- query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
722 qname, qtype, qclass = standardize(qname, qtype, qclass)
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
723
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
724 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
725 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
726 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
727 -- 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
728 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
729 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
730 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
731
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
732 if not self.server then self:adddefaultnameservers(); end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
733
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
734 local question = encodeQuestion(qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
735 local peek = self:peek (qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
736 if peek then return peek; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
737
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
738 local header, id = encodeHeader();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
739 --print ('query id', id, qclass, qtype, qname)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
740 local o = {
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
741 packet = header..question,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
742 server = self.best_server,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
743 delay = 1,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
744 retry = socket.gettime() + self.delays[1]
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
745 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
746
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
747 -- remember the query
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
748 self.active[id] = self.active[id] or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
749 self.active[id][question] = o;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
750
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
751 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
752 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
753 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
754 end
3324
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
755 conn:send (o.packet)
7093
388281be2bc7 net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents: 7059
diff changeset
756
388281be2bc7 net.dns: Remember query only after it was sent, in case it was not (fixes #598)
Kim Alvefur <zash@zash.se>
parents: 7059
diff changeset
757 -- 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
758 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
759 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
760 end
3324
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
761
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
762 if timer and self.timeout then
3324
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
763 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
764 local i = 1;
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
765 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
766 if get(self.wanted, qclass, qtype, qname, co) then
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
767 if i < num_servers then
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
768 i = i + 1;
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
769 self:servfail(conn);
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
770 o.server = self.best_server;
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
771 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
772 if conn then
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
773 conn:send(o.packet);
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
774 return self.timeout;
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
775 end
3324
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
776 end
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
777 -- Tried everything, failed
6309
b6f76a52eb36 net.dns: Ensure all pending requests get notified of a timeout when looking up a record (fix for d122420542fb)
Matthew Wild <mwild1@gmail.com>
parents: 6288
diff changeset
778 self:cancel(qclass, qtype, qname);
3324
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
779 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
780 end)
070c8ba71b76 net.dns: Handle our own timeouts, including falling onto other servers in resolv.conf if necessary
Matthew Wild <mwild1@gmail.com>
parents: 3057
diff changeset
781 end
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
782 return true;
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
783 end
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
784
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
785 function resolver:servfail(sock, err)
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
786 -- Resend all queries for this server
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
787
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
788 local num = self.socketset[sock]
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
789
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
790 -- Socket is dead now
6508
4a28b8320d7f net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents: 6463
diff changeset
791 sock = self:voidsocket(sock);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
792
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
793 -- 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
794 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
795 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
796 for question,o in pairs(queries) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
797 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
798 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
799 if o.server > #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
800 o.server = 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
801 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
802
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
803 o.retries = (o.retries or 0) + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
804 if o.retries >= #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
805 --print('timeout');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
806 queries[question] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
807 else
6509
7cb69eba3e95 net.dns: Try next server if peer name can not be set (thanks wirehack7)
Kim Alvefur <zash@zash.se>
parents: 6508
diff changeset
808 sock, err = self:getsocket(o.server);
6508
4a28b8320d7f net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents: 6463
diff changeset
809 if sock then sock:send(o.packet); end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
810 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
811 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
812 end
5266
5c3a3ef6b769 net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents: 4422
diff changeset
813 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
814 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
815 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
816 end
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
817
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
818 if num == self.best_server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
819 self.best_server = self.best_server + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
820 if self.best_server > #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
821 -- Exhausted all servers, try first again
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
822 self.best_server = 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
823 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
824 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
825 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
826 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
827
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
828 function resolver:settimeout(seconds)
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
829 self.timeout = seconds;
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
830 end
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
831
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
832 function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
833 --print('receive'); print(self.socket);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
834 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
835 rset = rset or self.socket;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
836
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
837 local response;
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
838 for _, sock in pairs(rset) do
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
839
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
840 if self.socketset[sock] then
2619
04158baefa34 net.dns: Update for new socket API
Matthew Wild <mwild1@gmail.com>
parents: 2578
diff changeset
841 local packet = sock:receive();
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
842 if packet then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
843 response = self:decode(packet);
2278
8c10f13c0c20 modulemanager, net.dns: Remove trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2082
diff changeset
844 if response and self.active[response.header.id]
2081
b9bbb709d62e net.dns: Be more strict about checking the DNS replies we receive
Matthew Wild <mwild1@gmail.com>
parents: 2069
diff changeset
845 and self.active[response.header.id][response.question.raw] then
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
846 --print('received response');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
847 --self.print(response);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
848
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
849 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
850 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
851 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
852 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
853 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
854
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
855 -- retire the query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
856 local queries = self.active[response.header.id];
2082
1381b2071c2e net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents: 2081
diff changeset
857 queries[response.question.raw] = nil;
1381b2071c2e net.dns: Be more strict about the records we cache
Matthew Wild <mwild1@gmail.com>
parents: 2081
diff changeset
858
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
859 if not next(queries) then self.active[response.header.id] = nil; end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
860 if not next(self.active) then self:closeall(); end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
861
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
862 -- was the query on the wanted list?
2301
8a01b0898679 net.dns: Fix for blocking dns lookups to find waiting coroutines correctly (not that we use this in Prosody...)
Matthew Wild <mwild1@gmail.com>
parents: 2300
diff changeset
863 local q = response.question[1];
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
864 local cos = get(self.wanted, q.class, q.type, q.name);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
865 if cos then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
866 for co in pairs(cos) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
867 if coroutine.status(co) == "suspended" then coroutine.resume(co); end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
868 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
869 set(self.wanted, q.class, q.type, q.name, nil);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
870 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
871 end
5266
5c3a3ef6b769 net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents: 4422
diff changeset
872
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
873 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
874 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
875 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
876
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
877 return response;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
878 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
879
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
880
3512
e344b00f2cc9 net.dns: Add 'force' parameter to resolver:feed() to force decoding a packet even if it doesn't match an outstanding request
Matthew Wild <mwild1@gmail.com>
parents: 3360
diff changeset
881 function resolver:feed(sock, packet, force)
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
882 --print('receive'); print(self.socket);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
883 self.time = socket.gettime();
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
884
3512
e344b00f2cc9 net.dns: Add 'force' parameter to resolver:feed() to force decoding a packet even if it doesn't match an outstanding request
Matthew Wild <mwild1@gmail.com>
parents: 3360
diff changeset
885 local response = self:decode(packet, force);
2300
e182b5029ef2 net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents: 2278
diff changeset
886 if response and self.active[response.header.id]
e182b5029ef2 net.dns: Port some DNS fixes to the resolver:feed() function for net.adns to use
Matthew Wild <mwild1@gmail.com>
parents: 2278
diff changeset
887 and self.active[response.header.id][response.question.raw] then
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
888 --print('received response');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
889 --self.print(response);
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
890
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
891 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
892 self:remember(rr, rr.type);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
893 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
894
8898
e6ba0e5260b4 net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents: 8897
diff changeset
895 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
896 self:remember(rr, rr.type);
e6ba0e5260b4 net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents: 8897
diff changeset
897 end
e6ba0e5260b4 net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents: 8897
diff changeset
898
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
899 -- retire the query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
900 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
901 queries[response.question.raw] = nil;
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
902 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
903 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
904
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
905 -- was the query on the wanted list?
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
906 local q = response.question[1];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
907 if q then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
908 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
909 if cos then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
910 for co in pairs(cos) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
911 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
912 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
913 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
914 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
915 end
2742
6c0a081cd766 net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2741
diff changeset
916 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
917
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
918 return response;
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
919 end
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
920
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
921 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
922 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
923 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
924 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
925 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
926 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
927 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
928 end
e69fafc14491 net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents: 896
diff changeset
929 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
930
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
931 function resolver:pulse() -- - - - - - - - - - - - - - - - - - - - - pulse
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
932 --print(':pulse');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
933 while self:receive() do end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
934 if not next(self.active) then return nil; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
935
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
936 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
937 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
938 for question,o in pairs(queries) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
939 if self.time >= o.retry then
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
940
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
941 o.server = o.server + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
942 if o.server > #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
943 o.server = 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
944 o.delay = o.delay + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
945 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
946
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
947 if o.delay > #self.delays then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
948 --print('timeout');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
949 queries[question] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
950 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
951 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
952 else
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
953 --print('retry', o.server, o.delay);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
954 local _a = self.socket[o.server];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
955 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
956 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
957 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
958 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
959 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
960 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
961
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
962 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
963 return nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
964 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
965
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
966
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
967 function resolver:lookup(qname, qtype, qclass) -- - - - - - - - - - lookup
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
968 self:query (qname, qtype, qclass)
3049
e54774bd73a7 net/dns: Fix socket.select timeout.
Brian Cully <bjc@junctionnetworks.com>
parents: 2742
diff changeset
969 while self:pulse() do
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
970 local recvt = {}
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
971 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
972 recvt[i] = s
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
973 end
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
974 socket.select(recvt, nil, 4)
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
975 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
976 --print(self.cache);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
977 return self:peek(qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
978 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
979
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
980 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
981 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
982 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
983
3746
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
984 function resolver:tohostname(ip)
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
985 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
986 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
987
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
988 --print ---------------------------------------------------------------- print
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
989
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
990
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
991 local hints = { -- - - - - - - - - - - - - - - - - - - - - - - - - - - hints
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
992 qr = { [0]='query', 'response' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
993 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
994 aa = { [0]='non-authoritative', 'authoritative' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
995 tc = { [0]='complete', 'truncated' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
996 rd = { [0]='recursion not desired', 'recursion desired' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
997 ra = { [0]='recursion not available', 'recursion available' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
998 z = { [0]='(reserved)' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
999 rcode = { [0]='no error', 'format error', 'server failure', 'name error', 'not implemented' },
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1000
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1001 type = dns.type,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1002 class = dns.class
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1003 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1004
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1005
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1006 local function hint(p, s) -- - - - - - - - - - - - - - - - - - - - - - hint
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1007 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
1008 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1009
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1010
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1011 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
1012 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
1013 'rcode', 'qdcount', 'ancount', 'nscount', 'arcount' } do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1014 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
1015 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1016
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1017 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
1018 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
1019 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
1020 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
1021 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1022
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1023 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
1024 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
1025 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
1026 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
1027 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
1028 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
1029 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
1030 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1031 for j,t in pairs(rr) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1032 if not common[j] then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1033 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
1034 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
1035 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1036 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1037 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1038 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1039 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1040
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1041
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1042 -- module api ------------------------------------------------------ module api
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1043
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1044
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1045 function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver
6310
d232bb1bbe1e net.dns: Remove unused obsolete code
Matthew Wild <mwild1@gmail.com>
parents: 6309
diff changeset
1046 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
1047 setmetatable (r, resolver);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1048 setmetatable (r.cache, cache_metatable);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1049 setmetatable (r.unsorted, { __mode = 'kv' });
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1050 return r;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1051 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1052
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1053 local _resolver = dns.resolver();
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1054 dns._resolver = _resolver;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1055
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1056 function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1057 return _resolver:lookup(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1058 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1059
3746
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1060 function dns.tohostname(...)
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1061 return _resolver:tohostname(...);
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1062 end
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1063
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1064 function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1065 return _resolver:purge(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1066 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1067
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1068 function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1069 return _resolver:peek(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1070 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1071
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1072 function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1073 return _resolver:query(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1074 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1075
2575
8f4d69940132 net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents: 2574
diff changeset
1076 function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1077 return _resolver:feed(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1078 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1079
2575
8f4d69940132 net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents: 2574
diff changeset
1080 function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1081 return _resolver:cancel(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1082 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1083
3328
5ac4fbbfb74d net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents: 3327
diff changeset
1084 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
1085 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
1086 end
5ac4fbbfb74d net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents: 3327
diff changeset
1087
5566
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1088 function dns.cache()
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1089 return _resolver.cache;
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1090 end
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1091
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
1092 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
1093 return _resolver:socket_wrapper_set(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1094 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1095
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1096 return dns;