dns-suite.js/dns.rdata.pack.js

46 lines
1.6 KiB
JavaScript
Raw Normal View History

2017-02-16 22:52:07 +00:00
(function (exports) {
'use strict';
var classes = exports.DNS_CLASSES || require('./dns.classes.js').DNS_CLASSES;
var types = exports.DNS_TYPES || require('./dns.types.js').DNS_TYPES;
exports.DNS_RDATA_PACK = function (ab, dv, total, record) {
// ab is needed if the rdata makes use of compression pointers
// packet is given for convenience
var packer;
var className = classes[record.class];
var typeName = types[record.type];
if (!className) {
throw new Error("Support for DNS Class 0x" + record.class.toString(16) + " (" + record.class + ")"
+ " is not implemented yet. Open an issue if you actually need support"
+ " (i.e. you're not working with a malformed packet)"
);
}
if (!typeName) {
throw new Error("Support for DNS Type 0x" + record.type.toString(16) + " (" + record.type + ")"
+ " is not implemented yet. Open an issue if you actually need support"
+ " (i.e. you're not working with a malformed packet)"
);
}
try {
packer = exports['DNS_PACKER_TYPE_' + typeName]
|| require('./dns.packer.type.' + typeName.toLowerCase())['DNS_PACKER_TYPE_' + typeName];
}
catch (e) { /*console.error(e)*/ }
if (!packer) {
throw new Error("Packer for DNS Type " + typeName + " could not be loaded."
+ " Did you include <script src=\"dns.packer.type." + typeName.toLowerCase() + ".js\"></script> ?"
+ " (or perhaps we plan to implement it and haven't yet - in which case please open an issue)"
);
}
return packer(ab, dv, total, record);
};
}('undefined' !== typeof window ? window : exports));