Annotate

net/dns.lua @ 8903:c5d5dfaa8d38

net.dns: Expand table of known RR types from IANA registry
author Kim Alvefur <zash@zash.se>
date Sat, 09 Jun 2018 15:30:26 +0200 (2018-06-09)
parent 8902:ac21f13798ae
child 8909:dbb5ec6885fe
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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18 local have_util_net, util_net = pcall(require, "util.net");
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20 local _, windows = pcall(require, "util.windows");
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21 local is_windows = (_ and windows) or os.getenv("WINDIR");
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23 local coroutine, io, math, string, table =
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24 coroutine, io, math, string, table;
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25
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26 local ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type =
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27 ipairs, next, pairs, print, setmetatable, tostring, assert, error, select, type;
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29 local ztact = { -- public domain 20080404 lua@ztact.com
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30 get = function(parent, ...)
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31 local len = select('#', ...);
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32 for i=1,len do
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33 parent = parent[select(i, ...)];
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34 if parent == nil then break; end
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35 end
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36 return parent;
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37 end;
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38 set = function(parent, ...)
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39 local len = select('#', ...);
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40 local key, value = select(len-1, ...);
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41 local cutpoint, cutkey;
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43 for i=1,len-2 do
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44 local key = select (i, ...)
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45 local child = parent[key]
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47 if value == nil then
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48 if child == nil then
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49 return;
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50 elseif next(child, next(child)) then
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51 cutpoint = nil; cutkey = nil;
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52 elseif cutpoint == nil then
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53 cutpoint = parent; cutkey = key;
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54 end
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55 elseif child == nil then
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56 child = {};
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57 parent[key] = child;
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58 end
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59 parent = child
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60 end
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61
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62 if value == nil and cutpoint then
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63 cutpoint[cutkey] = nil;
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64 else
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65 parent[key] = value;
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66 return value;
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67 end
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68 end;
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69 };
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70 local get, set = ztact.get, ztact.set;
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71
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72 local default_timeout = 15;
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73
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74 -------------------------------------------------- module dns
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75 local _ENV = nil;
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76 -- luacheck: std none
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77 local dns = {};
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78
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79
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80 -- dns type & class codes ------------------------------ dns type & class codes
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81
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82
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83 local append = table.insert
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84
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85
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86 local function highbyte(i) -- - - - - - - - - - - - - - - - - - - highbyte
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87 return (i-(i%0x100))/0x100;
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88 end
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89
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90
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91 local function augment (t, prefix) -- - - - - - - - - - - - - - - - - augment
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92 local a = {};
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93 for i = 1, 0xffff do
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94 local s = t[i] or ("%s%d"):format(prefix, i);
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95 a[i] = s;
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96 a[s] = s;
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97 a[string.lower(s)] = s;
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98 end
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99 return a;
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100 end
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101
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102
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103 local function encode (t) -- - - - - - - - - - - - - - - - - - - - - encode
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104 local code = {};
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105 for i,s in pairs(t) do
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106 local word = string.char(highbyte(i), i%0x100);
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107 code[i] = word;
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108 code[s] = word;
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109 code[string.lower(s)] = word;
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110 end
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111 return code;
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112 end
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113
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114
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115 dns.types = {
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116 [1] = "A", -- a host address,[RFC1035],,
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117 [2] = "NS", -- an authoritative name server,[RFC1035],,
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118 [3] = "MD", -- a mail destination (OBSOLETE - use MX),[RFC1035],,
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119 [4] = "MF", -- a mail forwarder (OBSOLETE - use MX),[RFC1035],,
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120 [5] = "CNAME", -- the canonical name for an alias,[RFC1035],,
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121 [6] = "SOA", -- marks the start of a zone of authority,[RFC1035],,
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122 [7] = "MB", -- a mailbox domain name (EXPERIMENTAL),[RFC1035],,
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123 [8] = "MG", -- a mail group member (EXPERIMENTAL),[RFC1035],,
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124 [9] = "MR", -- a mail rename domain name (EXPERIMENTAL),[RFC1035],,
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125 [10] = "NULL", -- a null RR (EXPERIMENTAL),[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
126 [11] = "WKS", -- a well known service description,[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
127 [12] = "PTR", -- a domain name pointer,[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
128 [13] = "HINFO", -- host information,[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
129 [14] = "MINFO", -- mailbox or mail list information,[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
130 [15] = "MX", -- mail exchange,[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
131 [16] = "TXT", -- text strings,[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
132 [17] = "RP", -- for Responsible Person,[RFC1183],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
133 [18] = "AFSDB", -- for AFS Data Base location,[RFC1183][RFC5864],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
134 [19] = "X25", -- for X.25 PSDN address,[RFC1183],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
135 [20] = "ISDN", -- for ISDN address,[RFC1183],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
136 [21] = "RT", -- for Route Through,[RFC1183],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
137 [22] = "NSAP", -- "for NSAP address, NSAP style A record",[RFC1706],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
138 [23] = "NSAP-PTR", -- "for domain name pointer, NSAP style",[RFC1348][RFC1637][RFC1706],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
139 [24] = "SIG", -- for security signature,[RFC4034][RFC3755][RFC2535][RFC2536][RFC2537][RFC2931][RFC3110][RFC3008],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
140 [25] = "KEY", -- for security key,[RFC4034][RFC3755][RFC2535][RFC2536][RFC2537][RFC2539][RFC3008][RFC3110],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
141 [26] = "PX", -- X.400 mail mapping information,[RFC2163],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
142 [27] = "GPOS", -- Geographical Position,[RFC1712],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
143 [28] = "AAAA", -- IP6 Address,[RFC3596],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
144 [29] = "LOC", -- Location Information,[RFC1876],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
145 [30] = "NXT", -- Next Domain (OBSOLETE),[RFC3755][RFC2535],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
146 [31] = "EID", -- Endpoint Identifier,[Michael_Patton][http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt],,1995-06
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
147 [32] = "NIMLOC", -- Nimrod Locator,[1][Michael_Patton][http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt],,1995-06
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
148 [33] = "SRV", -- Server Selection,[1][RFC2782],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
149 [34] = "ATMA", -- ATM Address,"[ ATM Forum Technical Committee, ""ATM Name System, V2.0"", Doc ID: AF-DANS-0152.000, July 2000. Available from and held in escrow by IANA.]",,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
150 [35] = "NAPTR", -- Naming Authority Pointer,[RFC2915][RFC2168][RFC3403],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
151 [36] = "KX", -- Key Exchanger,[RFC2230],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
152 [37] = "CERT", -- CERT,[RFC4398],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
153 [38] = "A6", -- A6 (OBSOLETE - use AAAA),[RFC3226][RFC2874][RFC6563],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
154 [39] = "DNAME", -- DNAME,[RFC6672],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
155 [40] = "SINK", -- SINK,[Donald_E_Eastlake][http://tools.ietf.org/html/draft-eastlake-kitchen-sink],,1997-11
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
156 [41] = "OPT", -- OPT,[RFC6891][RFC3225],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
157 [42] = "APL", -- APL,[RFC3123],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
158 [43] = "DS", -- Delegation Signer,[RFC4034][RFC3658],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
159 [44] = "SSHFP", -- SSH Key Fingerprint,[RFC4255],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
160 [45] = "IPSECKEY", -- IPSECKEY,[RFC4025],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
161 [46] = "RRSIG", -- RRSIG,[RFC4034][RFC3755],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
162 [47] = "NSEC", -- NSEC,[RFC4034][RFC3755],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
163 [48] = "DNSKEY", -- DNSKEY,[RFC4034][RFC3755],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
164 [49] = "DHCID", -- DHCID,[RFC4701],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
165 [50] = "NSEC3", -- NSEC3,[RFC5155],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
166 [51] = "NSEC3PARAM", -- NSEC3PARAM,[RFC5155],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
167 [52] = "TLSA", -- TLSA,[RFC6698],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
168 [53] = "SMIMEA", -- S/MIME cert association,[RFC8162],SMIMEA/smimea-completed-template,2015-12-01
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
169 -- [54] = "Unassigned", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
170 [55] = "HIP", -- Host Identity Protocol,[RFC8005],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
171 [56] = "NINFO", -- NINFO,[Jim_Reid],NINFO/ninfo-completed-template,2008-01-21
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
172 [57] = "RKEY", -- RKEY,[Jim_Reid],RKEY/rkey-completed-template,2008-01-21
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
173 [58] = "TALINK", -- Trust Anchor LINK,[Wouter_Wijngaards],TALINK/talink-completed-template,2010-02-17
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
174 [59] = "CDS", -- Child DS,[RFC7344],CDS/cds-completed-template,2011-06-06
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
175 [60] = "CDNSKEY", -- DNSKEY(s) the Child wants reflected in DS,[RFC7344],,2014-06-16
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
176 [61] = "OPENPGPKEY", -- OpenPGP Key,[RFC7929],OPENPGPKEY/openpgpkey-completed-template,2014-08-12
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
177 [62] = "CSYNC", -- Child-To-Parent Synchronization,[RFC7477],,2015-01-27
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
178 -- [63 .. 98] = "Unassigned", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
179 [99] = "SPF", -- ,[RFC7208],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
180 [100] = "UINFO", -- ,[IANA-Reserved],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
181 [101] = "UID", -- ,[IANA-Reserved],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
182 [102] = "GID", -- ,[IANA-Reserved],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
183 [103] = "UNSPEC", -- ,[IANA-Reserved],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
184 [104] = "NID", -- ,[RFC6742],ILNP/nid-completed-template,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
185 [105] = "L32", -- ,[RFC6742],ILNP/l32-completed-template,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
186 [106] = "L64", -- ,[RFC6742],ILNP/l64-completed-template,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
187 [107] = "LP", -- ,[RFC6742],ILNP/lp-completed-template,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
188 [108] = "EUI48", -- an EUI-48 address,[RFC7043],EUI48/eui48-completed-template,2013-03-27
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
189 [109] = "EUI64", -- an EUI-64 address,[RFC7043],EUI64/eui64-completed-template,2013-03-27
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
190 -- [110 .. 248] = "Unassigned", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
191 [249] = "TKEY", -- Transaction Key,[RFC2930],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
192 [250] = "TSIG", -- Transaction Signature,[RFC2845],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
193 [251] = "IXFR", -- incremental transfer,[RFC1995],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
194 [252] = "AXFR", -- transfer of an entire zone,[RFC1035][RFC5936],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
195 [253] = "MAILB", -- "mailbox-related RRs (MB, MG or MR)",[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
196 [254] = "MAILA", -- mail agent RRs (OBSOLETE - see MX),[RFC1035],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
197 [255] = "*", -- A request for all records the server/cache has available,[RFC1035][RFC6895],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
198 [256] = "URI", -- URI,[RFC7553],URI/uri-completed-template,2011-02-22
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
199 [257] = "CAA", -- Certification Authority Restriction,[RFC6844],CAA/caa-completed-template,2011-04-07
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
200 [258] = "AVC", -- Application Visibility and Control,[Wolfgang_Riedel],AVC/avc-completed-template,2016-02-26
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
201 [259] = "DOA", -- Digital Object Architecture,[draft-durand-doa-over-dns],DOA/doa-completed-template,2017-08-30
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
202 -- [260 .. 32767] = "Unassigned", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
203 [32768] = "TA", -- DNSSEC Trust Authorities,"[Sam_Weiler][http://cameo.library.cmu.edu/][ Deploying DNSSEC Without a Signed Root. Technical Report 1999-19, Information Networking Institute, Carnegie Mellon University, April 2004.]",,2005-12-13
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
204 [32769] = "DLV", -- DNSSEC Lookaside Validation,[RFC4431],,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
205 -- [32770 .. 65279] = "Unassigned", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
206 -- [65280 .. 65534] = "Private use", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
207 -- [65535] = "Reserved", -- ,,,
c5d5dfaa8d38 net.dns: Expand table of known RR types from IANA registry
Kim Alvefur <zash@zash.se>
parents: 8902
diff changeset
208 }
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
210 dns.classes = { 'IN', 'CS', 'CH', 'HS', [255] = '*' };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212
8901
eae606b9266c net.dns: Syntesize type names for the full range
Kim Alvefur <zash@zash.se>
parents: 8900
diff changeset
213 dns.type = augment (dns.types, "TYPE");
eae606b9266c net.dns: Syntesize type names for the full range
Kim Alvefur <zash@zash.se>
parents: 8900
diff changeset
214 dns.class = augment (dns.classes, "CLASS");
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
215 dns.typecode = encode (dns.types);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
216 dns.classcode = encode (dns.classes);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
218
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
219
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
220 local function standardize(qname, qtype, qclass) -- - - - - - - standardize
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
221 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
222 qname = string.lower(qname);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
223 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
224 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
226
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
227 local function prune(rrs, time, soft) -- - - - - - - - - - - - - - - prune
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
228 time = time or socket.gettime();
6463
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
229 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
230 if rr.tod then
8151
2c65f8be38aa net.dns: Simplify expiry calculation (fixes #919)
Kim Alvefur <zash@zash.se>
parents: 7093
diff changeset
231 if rr.tod < time then
6463
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
232 rrs[rr[rr.type:lower()]] = nil;
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
233 table.remove(rrs, i);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
234 return prune(rrs, time, soft); -- Re-iterate
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
235 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
236 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
237 assert(rr.ttl == 0);
6463
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
238 rrs[rr[rr.type:lower()]] = nil;
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
239 table.remove(rrs, i);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
240 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
241 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
242 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
244
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
245 -- metatables & co. ------------------------------------------ metatables & co.
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
247
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
248 local resolver = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
249 resolver.__index = resolver;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
250
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
251 resolver.timeout = default_timeout;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
252
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
253 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
254 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
255 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
256 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
257 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
258 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
259 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
260
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
261 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
262 LOC = resolver.LOC_tostring;
4125
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
263 MX = function (rr)
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
264 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
265 end;
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
266 SRV = function (rr)
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
267 local s = rr.srv;
5cf13260edec net.dns: Fix tostring() for SRV records
Matthew Wild <mwild1@gmail.com>
parents: 3955
diff changeset
268 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
269 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
270 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
271
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
272 local rr_metatable = {}; -- - - - - - - - - - - - - - - - - - - rr_metatable
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
273 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
274 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
275 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
276 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
277
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
278
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
279 local rrs_metatable = {}; -- - - - - - - - - - - - - - - - - - rrs_metatable
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
280 function rrs_metatable.__tostring(rrs)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
281 local t = {};
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
282 for _, rr in ipairs(rrs) do
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
283 append(t, tostring(rr)..'\n');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
284 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
285 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
286 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
287
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
288
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
289 local cache_metatable = {}; -- - - - - - - - - - - - - - - - cache_metatable
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
290 function cache_metatable.__tostring(cache)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
291 local time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
292 local t = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
293 for class,types in pairs(cache) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
294 for type,names in pairs(types) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
295 for name,rrs in pairs(names) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
296 prune(rrs, time);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
297 append(t, tostring(rrs));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
298 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
299 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
300 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
301 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
302 end
337
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
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
305 -- packet layer -------------------------------------------------- packet layer
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
306
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
307
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
308 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
309 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
310 dns.random = math.random;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
311 return dns.random(...);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
312 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
313
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
314
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
315 local function encodeHeader(o) -- - - - - - - - - - - - - - - encodeHeader
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
316 o = o or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
317 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
318
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
319 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
320 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
321 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
322 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
323 -- 1 inverse query
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
324 -- 2 server status request
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
325 -- 3-15 reserved
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
326 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
327
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
328 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
329 -- 1 format error
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
330 -- 2 server failure
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
331 -- 3 name error
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
332 -- 4 not implemented
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
333 -- 5 refused
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
334 -- 6-15 reserved
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
335 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
336 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
337
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
338 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
339 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
340 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
341 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
342
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
343 -- 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
344 local header = string.char(
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
345 highbyte(o.id), o.id %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
346 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
347 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
348 highbyte(o.qdcount), o.qdcount %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
349 highbyte(o.ancount), o.ancount %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
350 highbyte(o.nscount), o.nscount %0x100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
351 highbyte(o.arcount), o.arcount %0x100
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
352 );
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
353
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
354 return header, o.id;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
355 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
356
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
357
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
358 local function encodeName(name) -- - - - - - - - - - - - - - - - encodeName
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
359 local t = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
360 for part in string.gmatch(name, '[^.]+') do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
361 append(t, string.char(string.len(part)));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
362 append(t, part);
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 append(t, string.char(0));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
365 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
366 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
367
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
368
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
369 local function encodeQuestion(qname, qtype, qclass) -- - - - encodeQuestion
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
370 qname = encodeName(qname);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
371 qtype = dns.typecode[qtype or 'a'];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
372 qclass = dns.classcode[qclass or 'in'];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
373 return qname..qtype..qclass;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
374 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
375
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
376
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
377 function resolver:byte(len) -- - - - - - - - - - - - - - - - - - - - - byte
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
378 len = len or 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
379 local offset = self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
380 local last = offset + len - 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
381 if last > #self.packet then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
382 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
383 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
384 self.offset = offset + len;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
385 return string.byte(self.packet, offset, last);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
386 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
387
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
388
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
389 function resolver:word() -- - - - - - - - - - - - - - - - - - - - - - word
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
390 local b1, b2 = self:byte(2);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
391 return 0x100*b1 + b2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
392 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
393
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
394
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
395 function resolver:dword () -- - - - - - - - - - - - - - - - - - - - - dword
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
396 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
397 --print('dword', b1, b2, b3, b4);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
398 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
399 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
400
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
401
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
402 function resolver:sub(len) -- - - - - - - - - - - - - - - - - - - - - - sub
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
403 len = len or 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
404 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
405 self.offset = self.offset + len;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
406 return s;
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:header(force) -- - - - - - - - - - - - - - - - - - header
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
411 local id = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
412 --print(string.format(':header id %x', id));
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
413 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
414
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
415 local h = { id = id };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
416
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
417 local b1, b2 = self:byte(2);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
418
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
419 h.rd = b1 %2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
420 h.tc = b1 /2%2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
421 h.aa = b1 /4%2;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
422 h.opcode = b1 /8%16;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
423 h.qr = b1 /128;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
424
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
425 h.rcode = b2 %16;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
426 h.z = b2 /16%8;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
427 h.ra = b2 /128;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
428
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
429 h.qdcount = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
430 h.ancount = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
431 h.nscount = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
432 h.arcount = self:word();
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
433
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
434 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
435
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
436 return h;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
437 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
438
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
439
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
440 function resolver:name() -- - - - - - - - - - - - - - - - - - - - - - name
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
441 local remember, pointers = nil, 0;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
442 local len = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
443 local n = {};
4422
c25dee24623f s2smanager, net.dns: Fix handling for NXNAME and SRV target of "."
Florian Zeitz <florob@babelmonkeys.de>
parents: 4400
diff changeset
444 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
445 while len > 0 do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
446 if len >= 0xc0 then -- name is "compressed"
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
447 pointers = pointers + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
448 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
449 local offset = ((len-0xc0)*0x100) + self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
450 remember = remember or self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
451 self.offset = offset + 1; -- +1 for lua
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
452 else -- name is not compressed
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
453 append(n, self:sub(len)..'.');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
454 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
455 len = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
456 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
457 self.offset = remember or self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
458 return table.concat(n);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
459 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
460
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
461
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
462 function resolver:question() -- - - - - - - - - - - - - - - - - - question
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
463 local q = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
464 q.name = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
465 q.type = dns.type[self:word()];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
466 q.class = dns.class[self:word()];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
467 return q;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
468 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
469
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
470
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
471 function resolver:A(rr) -- - - - - - - - - - - - - - - - - - - - - - - - A
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
472 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
473 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
474 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
475
8427
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
476 if have_util_net and util_net.ntop then
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
477 function resolver:A(rr)
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
478 rr.a = util_net.ntop(self:sub(4));
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
479 end
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
480 end
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
481
4267
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
482 function resolver:AAAA(rr)
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
483 local addr = {};
7500
4c519444d4a2 net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7480
diff changeset
484 for _ = 1, rr.rdlength, 2 do
4267
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
485 local b1, b2 = self:byte(2);
29d7eb6ff62c net.dns: Support for resolving AAAA records
Matthew Wild <mwild1@gmail.com>
parents: 4251
diff changeset
486 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
487 end
4373
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
488 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
489 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
490 for item in addr:gmatch(":[0:]+:[0:]+:") do
4373
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
491 table.insert(zeros, item)
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
492 end
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
493 if #zeros == 0 then
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
494 rr.aaaa = addr;
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
495 return
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
496 elseif #zeros > 1 then
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
497 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
498 end
9a20acf315c9 net.dns: Shorten AAAA records
Kim Alvefur <zash@zash.se>
parents: 4267
diff changeset
499 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
500 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
501
8427
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
502 if have_util_net and util_net.ntop then
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
503 function resolver:AAAA(rr)
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
504 rr.aaaa = util_net.ntop(self:sub(16));
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
505 end
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
506 end
1371518f70ff net.dns: Use inet_ntop from util.net if available
Kim Alvefur <zash@zash.se>
parents: 8263
diff changeset
507
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
508 function resolver:CNAME(rr) -- - - - - - - - - - - - - - - - - - - - CNAME
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
509 rr.cname = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
510 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
511
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
512
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
513 function resolver:MX(rr) -- - - - - - - - - - - - - - - - - - - - - - - MX
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
514 rr.pref = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
515 rr.mx = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
516 end
337
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
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
519 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
520 local b = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
521 --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
522 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
523 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
524
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
525
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
526 function resolver:LOC(rr) -- - - - - - - - - - - - - - - - - - - - - - LOC
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
527 rr.version = self:byte();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
528 if rr.version == 0 then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
529 rr.loc = rr.loc or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
530 rr.loc.size = self:LOC_nibble_power();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
531 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
532 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
533 rr.loc.latitude = self:dword();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
534 rr.loc.longitude = self:dword();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
535 rr.loc.altitude = self:dword();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
536 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
537 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
538
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
539
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
540 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
541 f = f - 0x80000000;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
542 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
543 local deg, min, msec;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
544 msec = f%60000;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
545 f = (f-msec)/60000;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
546 min = f%60;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
547 deg = (f-min)/60;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
548 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
549 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
550
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
551
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
552 function resolver.LOC_tostring(rr) -- - - - - - - - - - - - - LOC_tostring
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
553 local t = {};
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
554
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
555 --[[
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
556 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
557 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
558 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
559 --]]
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
560
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
561 append(t, string.format(
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
562 '%s %s %.2fm %.2fm %.2fm %.2fm',
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
563 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
564 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
565 (rr.loc.altitude - 10000000) / 100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
566 rr.loc.size / 100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
567 rr.loc.horiz_pre / 100,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
568 rr.loc.vert_pre / 100
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
569 ));
337
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 return table.concat(t);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
572 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
573
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
574
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
575 function resolver:NS(rr) -- - - - - - - - - - - - - - - - - - - - - - - NS
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
576 rr.ns = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
577 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
578
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
579
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
580 function resolver:SOA(rr) -- - - - - - - - - - - - - - - - - - - - - - SOA
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
581 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
582
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
583
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
584 function resolver:SRV(rr) -- - - - - - - - - - - - - - - - - - - - - - SRV
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
585 rr.srv = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
586 rr.srv.priority = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
587 rr.srv.weight = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
588 rr.srv.port = self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
589 rr.srv.target = self:name();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
590 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
591
3513
4cf5962747fc net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents: 3512
diff changeset
592 function resolver:PTR(rr)
4cf5962747fc net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents: 3512
diff changeset
593 rr.ptr = self:name();
4cf5962747fc net.dns: Support for parsing PTR records
Matthew Wild <mwild1@gmail.com>
parents: 3512
diff changeset
594 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
595
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
596 function resolver:TXT(rr) -- - - - - - - - - - - - - - - - - - - - - - TXT
4251
96e9d5f9ab3b net.dns: Fix TXT records
Kim Alvefur <zash@zash.se>
parents: 4125
diff changeset
597 rr.txt = self:sub (self:byte());
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
598 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
599
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
600
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
601 function resolver:rr() -- - - - - - - - - - - - - - - - - - - - - - - - rr
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
602 local rr = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
603 setmetatable(rr, rr_metatable);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
604 rr.name = self:name(self);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
605 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
606 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
607 rr.ttl = 0x10000*self:word() + self:word();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
608 rr.rdlength = self:word();
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
609
8263
9b52b1f19b51 net.dns: Correctly apply lower bound of RTT (thanks Ge0rG)
Kim Alvefur <zash@zash.se>
parents: 8164
diff changeset
610 rr.tod = self.time + math.max(rr.ttl, 1);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
611
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
612 local remember = self.offset;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
613 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
614 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
615 self.offset = remember;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
616 rr.rdata = self:sub(rr.rdlength);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
617 return rr;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
618 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
619
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
620
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
621 function resolver:rrs (count) -- - - - - - - - - - - - - - - - - - - - - rrs
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
622 local rrs = {};
7500
4c519444d4a2 net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7480
diff changeset
623 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
624 return rrs;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
625 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
626
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
627
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
628 function resolver:decode(packet, force) -- - - - - - - - - - - - - - decode
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
629 self.packet, self.offset = packet, 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
630 local header = self:header(force);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
631 if not header then return nil; end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
632 local response = { header = header };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
633
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
634 response.question = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
635 local offset = self.offset;
7500
4c519444d4a2 net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7480
diff changeset
636 for _ = 1, response.header.qdcount do
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
637 append(response.question, self:question());
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
638 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
639 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
640
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
641 if not force then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
642 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
643 self.active[response.header.id] = nil;
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
644 return nil;
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 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
647
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
648 response.answer = self:rrs(response.header.ancount);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
649 response.authority = self:rrs(response.header.nscount);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
650 response.additional = self:rrs(response.header.arcount);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
651
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
652 return response;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
653 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
654
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
655
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
656 -- socket layer -------------------------------------------------- socket layer
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
657
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
658
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
659 resolver.delays = { 1, 3 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
660
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
661
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
662 function resolver:addnameserver(address) -- - - - - - - - - - addnameserver
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
663 self.server = self.server or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
664 append(self.server, address);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
665 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
666
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
667
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
668 function resolver:setnameserver(address) -- - - - - - - - - - setnameserver
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
669 self.server = {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
670 self:addnameserver(address);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
671 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
672
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
673
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
674 function resolver:adddefaultnameservers() -- - - - - adddefaultnameservers
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
675 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
676 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
677 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
678 self:addnameserver(server);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
679 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
680 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
681 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
682 -- 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
683 self:addnameserver("208.67.222.222");
2742
6c0a081cd766 net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2741
diff changeset
684 self:addnameserver("208.67.220.220");
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
685 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
686 else -- posix
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
687 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
688 if resolv_conf then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
689 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
690 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
691 :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
692 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
693 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
694 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
695 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
696 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
697 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
698 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
699 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
700 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
701 -- 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
702 self:addnameserver("127.0.0.1");
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
703 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
704 end
399
93b6587d9afb Added temporary fix for srv on windows: using opendns nameservers
Waqas Hussain <waqas20@gmail.com>
parents: 379
diff changeset
705 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
706
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
707
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
708 function resolver:getsocket(servernum) -- - - - - - - - - - - - - getsocket
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
709 self.socket = self.socket or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
710 self.socketset = self.socketset or {};
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
711
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
712 local sock = self.socket[servernum];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
713 if sock then return sock; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
714
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
715 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
716 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
717 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
718 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
719 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
720 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
721 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
722 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
723 if not sock then
6e22b0cf3d72 net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents: 3747
diff changeset
724 return nil, err;
6e22b0cf3d72 net.dns: resolver:getsocket(): Return nil, err on failure
Matthew Wild <mwild1@gmail.com>
parents: 3747
diff changeset
725 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
726 sock:settimeout(0);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
727 -- 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
728 self.socket[servernum] = sock;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
729 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
730 -- 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
731 -- 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
732 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
733 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
734 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
735 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
736 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
737 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
738
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
739 function resolver:voidsocket(sock)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
740 if self.socket[sock] then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
741 self.socketset[self.socket[sock]] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
742 self.socket[sock] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
743 elseif self.socketset[sock] then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
744 self.socket[self.socketset[sock]] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
745 self.socketset[sock] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
746 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
747 sock:close();
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
748 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
749
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
750 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
751 self.socket_wrapper = func;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
752 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
753
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
754
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
755 function resolver:closeall () -- - - - - - - - - - - - - - - - - - closeall
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
756 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
757 self.socket[i] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
758 self.socketset[sock] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
759 sock:close();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
760 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
761 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
762
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
763
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
764 function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
765 --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
766 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
767
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
768 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
769 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
770 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
771 --print('remember all', all);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
772 if all then append(all, rr); end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
773 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
774
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
775 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
776 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
777 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
778 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
779 rrs[rr[qtype:lower()]] = true;
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
780 append(rrs, rr);
460584257cc9 net.dns: Avoid duplicate cache entries
Florian Zeitz <florob@babelmonkeys.de>
parents: 6310
diff changeset
781 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
782
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
783 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
784 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
785
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
786
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
787 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
788 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
789 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
790
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
791
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
792 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
793 qname, qtype, qclass = standardize(qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
794 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
795 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
796 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
797 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
798 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
799 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
800 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
801 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
802 set(self.cache, qclass, qtype, qname, nil);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
803 return nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
804 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
805 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
806 return rrs;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
807 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
808
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
809
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
810 function resolver:purge(soft) -- - - - - - - - - - - - - - - - - - - purge
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
811 if soft == 'soft' then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
812 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
813 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
814 for type,names in pairs(types) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
815 for name,rrs in pairs(names) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
816 prune(rrs, self.time, 'soft')
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
817 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
818 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
819 end
4400
ac651265766c net.dns: Preserve metatable on manual cache purge
Matthew Wild <mwild1@gmail.com>
parents: 4373
diff changeset
820 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
821 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
822
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
823
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
824 function resolver:query(qname, qtype, qclass) -- - - - - - - - - - -- query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
825 qname, qtype, qclass = standardize(qname, qtype, qclass)
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
826
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
827 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
828 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
829 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
830 -- 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
831 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
832 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
833 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
834
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
835 if not self.server then self:adddefaultnameservers(); end
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 question = encodeQuestion(qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
838 local peek = self:peek (qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
839 if peek then return peek; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
840
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
841 local header, id = encodeHeader();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
842 --print ('query id', id, qclass, qtype, qname)
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
843 local o = {
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
844 packet = header..question,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
845 server = self.best_server,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
846 delay = 1,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
847 retry = socket.gettime() + self.delays[1]
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
848 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
849
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
850 -- remember the query
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
851 self.active[id] = self.active[id] or {};
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
852 self.active[id][question] = o;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
853
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
854 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
855 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
856 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
857 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
858 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
859
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
860 -- 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
861 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
862 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
863 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
864
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
865 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
866 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
867 local i = 1;
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
868 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
869 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
870 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
871 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
872 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
873 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
874 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
875 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
876 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
877 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
878 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
879 end
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
880 -- 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
881 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
882 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
883 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
884 end
3955
a096700d23d9 net.dns: resolver:query(): Handle getsocket() failures, and return true on success
Matthew Wild <mwild1@gmail.com>
parents: 3954
diff changeset
885 return true;
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
886 end
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
887
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
888 function resolver:servfail(sock, err)
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
889 -- Resend all queries for this server
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
890
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
891 local num = self.socketset[sock]
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
892
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
893 -- Socket is dead now
6508
4a28b8320d7f net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents: 6463
diff changeset
894 sock = self:voidsocket(sock);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
895
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
896 -- 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
897 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
898 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
899 for question,o in pairs(queries) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
900 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
901 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
902 if o.server > #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
903 o.server = 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
904 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
905
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
906 o.retries = (o.retries or 0) + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
907 if o.retries >= #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
908 --print('timeout');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
909 queries[question] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
910 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
911 sock, err = self:getsocket(o.server);
6508
4a28b8320d7f net.dns: Return new socket from servfail
Kim Alvefur <zash@zash.se>
parents: 6463
diff changeset
912 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
913 end
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
5266
5c3a3ef6b769 net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents: 4422
diff changeset
916 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
917 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
918 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
919 end
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
920
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
921 if num == self.best_server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
922 self.best_server = self.best_server + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
923 if self.best_server > #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
924 -- Exhausted all servers, try first again
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
925 self.best_server = 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
926 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
927 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
928 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
929 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
930
3327
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
931 function resolver:settimeout(seconds)
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
932 self.timeout = seconds;
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
933 end
b447682f2a8d net.dns: Make timeout configurable (default 15s)
Matthew Wild <mwild1@gmail.com>
parents: 3326
diff changeset
934
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
935 function resolver:receive(rset) -- - - - - - - - - - - - - - - - - receive
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
936 --print('receive'); print(self.socket);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
937 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
938 rset = rset or self.socket;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
939
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
940 local response;
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
941 for _, sock in pairs(rset) do
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
942
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
943 if self.socketset[sock] then
2619
04158baefa34 net.dns: Update for new socket API
Matthew Wild <mwild1@gmail.com>
parents: 2578
diff changeset
944 local packet = sock:receive();
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
945 if packet then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
946 response = self:decode(packet);
2278
8c10f13c0c20 modulemanager, net.dns: Remove trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2082
diff changeset
947 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
948 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
949 --print('received response');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
950 --self.print(response);
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
951
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
952 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
953 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
954 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
955 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
956 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
957
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
958 -- retire the query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
959 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
960 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
961
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
962 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
963 if not next(self.active) then self:closeall(); end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
964
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
965 -- 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
966 local q = response.question[1];
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
967 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
968 if cos then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
969 for co in pairs(cos) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
970 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
971 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
972 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
973 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
974 end
5266
5c3a3ef6b769 net.dns: Clean up query list when a server is marked down
Matthew Wild <mwild1@gmail.com>
parents: 4422
diff changeset
975
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
976 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
977 end
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 return response;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
981 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
982
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
983
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
984 function resolver:feed(sock, packet, force)
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
985 --print('receive'); print(self.socket);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
986 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
987
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
988 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
989 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
990 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
991 --print('received response');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
992 --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
993
7469
363e4a5e9b0a net.dns: remove unused one-letter loop variables [luacheck]
Anton Shestakov <av6@dwimlabs.net>
parents: 7322
diff changeset
994 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
995 self:remember(rr, rr.type);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
996 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
997
8898
e6ba0e5260b4 net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents: 8897
diff changeset
998 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
999 self:remember(rr, rr.type);
e6ba0e5260b4 net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents: 8897
diff changeset
1000 end
e6ba0e5260b4 net.dns: Also cache records from the 'additional' section
Kim Alvefur <zash@zash.se>
parents: 8897
diff changeset
1001
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1002 -- retire the query
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1003 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
1004 queries[response.question.raw] = nil;
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1005 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
1006 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
1007
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1008 -- was the query on the wanted list?
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1009 local q = response.question[1];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1010 if q then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1011 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
1012 if cos then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1013 for co in pairs(cos) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1014 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
1015 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1016 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
1017 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1018 end
2742
6c0a081cd766 net.dns: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2741
diff changeset
1019 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1020
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1021 return response;
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1022 end
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1023
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
1024 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
1025 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
1026 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
1027 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
1028 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
1029 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
1030 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
1031 end
e69fafc14491 net.dns: Add support for cancelling a coroutine-based request
Matthew Wild <mwild1@gmail.com>
parents: 896
diff changeset
1032 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1033
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1034 function resolver:pulse() -- - - - - - - - - - - - - - - - - - - - - pulse
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1035 --print(':pulse');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1036 while self:receive() do end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1037 if not next(self.active) then return nil; end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1038
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1039 self.time = socket.gettime();
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1040 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
1041 for question,o in pairs(queries) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1042 if self.time >= o.retry then
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1043
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1044 o.server = o.server + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1045 if o.server > #self.server then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1046 o.server = 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1047 o.delay = o.delay + 1;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1048 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1049
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1050 if o.delay > #self.delays then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1051 --print('timeout');
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1052 queries[question] = nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1053 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
1054 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
1055 else
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1056 --print('retry', o.server, o.delay);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1057 local _a = self.socket[o.server];
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1058 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
1059 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
1060 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1061 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1062 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1063 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1064
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1065 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
1066 return nil;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1067 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1068
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1069
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1070 function resolver:lookup(qname, qtype, qclass) -- - - - - - - - - - lookup
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1071 self:query (qname, qtype, qclass)
3049
e54774bd73a7 net/dns: Fix socket.select timeout.
Brian Cully <bjc@junctionnetworks.com>
parents: 2742
diff changeset
1072 while self:pulse() do
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
1073 local recvt = {}
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
1074 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
1075 recvt[i] = s
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
1076 end
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
1077 socket.select(recvt, nil, 4)
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3513
diff changeset
1078 end
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1079 --print(self.cache);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1080 return self:peek(qname, qtype, qclass);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1081 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1082
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1083 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
1084 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
1085 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1086
3746
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1087 function resolver:tohostname(ip)
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1088 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
1089 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1090
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1091 --print ---------------------------------------------------------------- print
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1092
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1093
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1094 local hints = { -- - - - - - - - - - - - - - - - - - - - - - - - - - - hints
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1095 qr = { [0]='query', 'response' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1096 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
1097 aa = { [0]='non-authoritative', 'authoritative' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1098 tc = { [0]='complete', 'truncated' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1099 rd = { [0]='recursion not desired', 'recursion desired' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1100 ra = { [0]='recursion not available', 'recursion available' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1101 z = { [0]='(reserved)' },
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1102 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
1103
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1104 type = dns.type,
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1105 class = dns.class
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1106 };
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1107
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1108
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1109 local function hint(p, s) -- - - - - - - - - - - - - - - - - - - - - - hint
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1110 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
1111 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1112
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1113
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1114 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
1115 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
1116 'rcode', 'qdcount', 'ancount', 'nscount', 'arcount' } do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1117 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
1118 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1119
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1120 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
1121 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
1122 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
1123 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
1124 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1125
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1126 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
1127 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
1128 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
1129 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
1130 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
1131 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
1132 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
1133 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1134 for j,t in pairs(rr) do
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1135 if not common[j] then
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1136 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
1137 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
1138 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1139 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1140 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1141 end
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1142 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1143
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1144
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1145 -- module api ------------------------------------------------------ module api
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1146
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1147
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1148 function dns.resolver () -- - - - - - - - - - - - - - - - - - - - - resolver
6310
d232bb1bbe1e net.dns: Remove unused obsolete code
Matthew Wild <mwild1@gmail.com>
parents: 6309
diff changeset
1149 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
1150 setmetatable (r, resolver);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1151 setmetatable (r.cache, cache_metatable);
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1152 setmetatable (r.unsorted, { __mode = 'kv' });
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1153 return r;
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1154 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1155
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1156 local _resolver = dns.resolver();
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1157 dns._resolver = _resolver;
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1158
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1159 function dns.lookup(...) -- - - - - - - - - - - - - - - - - - - - - lookup
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1160 return _resolver:lookup(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1161 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1162
3746
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1163 function dns.tohostname(...)
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1164 return _resolver:tohostname(...);
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1165 end
9719316c854e net.dns: Add resolver:tohostname() and dns.tohostname()
Matthew Wild <mwild1@gmail.com>
parents: 3719
diff changeset
1166
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1167 function dns.purge(...) -- - - - - - - - - - - - - - - - - - - - - - purge
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1168 return _resolver:purge(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1169 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1170
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1171 function dns.peek(...) -- - - - - - - - - - - - - - - - - - - - - - - peek
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1172 return _resolver:peek(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1173 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1174
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1175 function dns.query(...) -- - - - - - - - - - - - - - - - - - - - - - query
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1176 return _resolver:query(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1177 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1178
2575
8f4d69940132 net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents: 2574
diff changeset
1179 function dns.feed(...) -- - - - - - - - - - - - - - - - - - - - - - - feed
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1180 return _resolver:feed(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1181 end
869
09019c452709 net.dns: Add methods necessary for allowing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
parents: 759
diff changeset
1182
2575
8f4d69940132 net.dns: Fixed whitespace/indentation.
Waqas Hussain <waqas20@gmail.com>
parents: 2574
diff changeset
1183 function dns.cancel(...) -- - - - - - - - - - - - - - - - - - - - - - cancel
2573
60493186fef6 net.dns: Removed some useless indirection to improve readability.
Waqas Hussain <waqas20@gmail.com>
parents: 2425
diff changeset
1184 return _resolver:cancel(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1185 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1186
3328
5ac4fbbfb74d net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents: 3327
diff changeset
1187 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
1188 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
1189 end
5ac4fbbfb74d net.dns: Add dns.settimeout() to set the timeout for the default resolver
Matthew Wild <mwild1@gmail.com>
parents: 3327
diff changeset
1190
5566
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1191 function dns.cache()
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1192 return _resolver.cache;
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1193 end
74ae3e7e8779 net.dns: Add nicer API to cached records
Kim Alvefur <zash@zash.se>
parents: 5340
diff changeset
1194
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
1195 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
1196 return _resolver:socket_wrapper_set(...);
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1197 end
337
4a1dd1c2c219 We have SRV resolving \o/
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1198
2069
72357b1c6d88 net.dns: Fixed indentation and coding style.
Waqas Hussain <waqas20@gmail.com>
parents: 2068
diff changeset
1199 return dns;