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implement URI record #22

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implement URI record #22

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33 changes: 30 additions & 3 deletions packet.js
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Original file line number Diff line number Diff line change
Expand Up @@ -152,7 +152,8 @@ var
WRITE_SOA = consts.NAME_TO_QTYPE.SOA,
WRITE_OPT = consts.NAME_TO_QTYPE.OPT,
WRITE_NAPTR = consts.NAME_TO_QTYPE.NAPTR,
WRITE_TLSA = consts.NAME_TO_QTYPE.TLSA;
WRITE_TLSA = consts.NAME_TO_QTYPE.TLSA,
WRITE_URI = consts.NAME_TO_QTYPE.URI;

function writeHeader(buff, packet) {
assert(packet.header, 'Packet requires "header"');
Expand Down Expand Up @@ -362,6 +363,18 @@ function writeTlsa(buff, val) {
return WRITE_RESOURCE_DONE;
}

// URI: https://tools.ietf.org/html/draft-faltstrom-uri
function writeUri(buff, val) {
assertUndefined(val.priority, 'URI record requires "priority"');
assertUndefined(val.weight, 'URI record requires "weight"');
assertUndefined(val.target, 'URI record requires "target"');
buff.writeUInt16BE(val.priority & 0xFFFF);
buff.writeUInt16BE(val.weight & 0xFFFF);
buff.write(val.target);
return WRITE_RESOURCE_DONE;
}


function makeEdns(packet) {
packet.edns = {
name: '',
Expand Down Expand Up @@ -481,6 +494,9 @@ Packet.write = function(buff, packet) {
case WRITE_TLSA:
state = writeTlsa(buff, val);
break;
case WRITE_URI:
state = writeUri(buff, val);
break;
case WRITE_END:
return buff.tell();
default:
Expand Down Expand Up @@ -658,6 +674,13 @@ function parseOpt(val, msg, rdata, packet) {
return PARSE_RESOURCE_DONE;
}

function parseUri(val, msg, rdata) {
val.priority = msg.readUInt16BE();
val.weight = msg.readUInt16BE();
val.target = msg.slice(rdata.len - 4).toString('utf8');
return PARSE_RESOURCE_DONE;
}

var
PARSE_HEADER = 100000,
PARSE_QUESTION = 100001,
Expand All @@ -677,8 +700,9 @@ var
PARSE_NAPTR = consts.NAME_TO_QTYPE.NAPTR,
PARSE_OPT = consts.NAME_TO_QTYPE.OPT,
PARSE_SPF = consts.NAME_TO_QTYPE.SPF,
PARSE_TLSA = consts.NAME_TO_QTYPE.TLSA;

PARSE_TLSA = consts.NAME_TO_QTYPE.TLSA,
PARSE_URI = consts.NAME_TO_QTYPE.URI;


Packet.parse = function(msg) {
var state,
Expand Down Expand Up @@ -767,6 +791,9 @@ Packet.parse = function(msg) {
case PARSE_TLSA:
state = parseTlsa(val, msg, rdata);
break;
case PARSE_URI:
state = parseUri(val, msg, rdata);
break;
case PARSE_END:
return packet;
default:
Expand Down
Binary file added test/fixtures/single.draft-faltstrom-uri.uk.uri.bin
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28 changes: 28 additions & 0 deletions test/fixtures/single.draft-faltstrom-uri.uk.uri.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
{ header:
{ id: 8294,
qr: 1,
opcode: 0,
aa: 0,
tc: 0,
rd: 1,
ra: 1,
res1: 0,
res2: 0,
res3: 0,
rcode: 0 },
question: [ { name: 'single.draft-faltstrom-uri.uk', type: 256, class: 1 } ],
answer:
[{
name: 'single.draft-faltstrom-uri.uk',
type: 256,
class: 1,
ttl: 126,
priority: 42,
weight: 69,
target: 'http://tools.ietf.org/html/draft-faltstrom-uri'
} ],
authority: [],
additional: [],
edns_options: [],
payload: undefined,
}