coolaj86/dns-suite.js
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fix bug by adding null terminator

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This commit is contained in:
AJ ONeal 2017-10-09 13:19:54 -06:00
parent ed28de4e59
commit ef3f2ae941
2 changed files with 19 additions and 16 deletions
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13
packer/type.ns.js
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@ -1,3 +1,5 @@
// NOTE: this should be EXACTLY the same as PTR
(function (exports) { (function (exports) {
'use strict'; 'use strict';
@ -8,8 +10,10 @@ exports.DNS_PACKER_TYPE_NS = function (ab, dv, total, record) {
throw new Error("no data on NS record"); throw new Error("no data on NS record");
} }
var rdLenIndex = total; // RDLENGTH
total +=2; // leading len and length of string and trailing null (all dots become lengths)
dv.setUint16(total, record.data.length + 2, false);
total += 2;
// RDATA // RDATA
// a sequence of labels // a sequence of labels
@ -23,9 +27,8 @@ exports.DNS_PACKER_TYPE_NS = function (ab, dv, total, record) {
total += 1; total += 1;
}); });
}); });
dv.setUint8(total, 0x00, false);
// RDLENGTH total += 1;
dv.setUint16(rdLenIndex, record.data.length + 1, false);
return total; return total;
}; };

22
packer/type.ptr.js
View File

@ -1,35 +1,35 @@
// NOTE: this should be EXACTLY the same as NS
(function (exports) { (function (exports) {
'use strict'; 'use strict';
// The host name that represents the supplied UP address // The host name that represents the supplied UP address
// May be a label, pointer or any combination // May be a label, pointer or any combination
exports.DNS_PACKER_TYPE_PTR = function (ab, dv, total, record) { exports.DNS_PACKER_TYPE_PTR = function (ab, dv, total, record) {
if (!record.data) { if (!record.data) {
throw new Error("no data for PTR record"); throw new Error("no data for PTR record");
} }
var ptrLen = 0; // RDLENGTH
var rdLenIndex = total; // leading len and length of string and trailing null (all dots become lengths)
dv.setUint16(total, record.data.length + 2, false);
total += 2; total += 2;
// RDATA // RDATA
// a sequence of labels // a sequence of labels
record.data.split('.').forEach(function (label){ record.data.split('.').forEach(function (label) {
console.log("the labels are: " + label);
ptrLen += 1 + label.length;
dv.setUint8(total, label.length, false); dv.setUint8(total, label.length, false);
total += 1; total += 1;
label.split('').forEach(function (ch){ label.split('').forEach(function (ch) {
dv.setUint8(total, ch.charCodeAt(0), false); dv.setUint8(total, ch.charCodeAt(0), false);
total += 1; total += 1;
}); });
}); });
dv.setUint8(total, 0x00, false);
// RDLENGTH total += 1;
dv.setUint16(rdLenIndex, record.data.length + 1, false);
return total; return total;
}; };