dns-packet-typescript/dist/index.js

An abstract-encoding compliant module for encoding / decoding DNS packets

'use strict';
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __exportStar = (this && this.__exportStar) || function(m, exports) {
    for (var p in m) if (p !== "default" && !exports.hasOwnProperty(p)) __createBinding(exports, m, p);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.streamDecode = exports.streamEncode = exports.encodingLength = exports.decode = exports.encode = exports.DNSSEC_OK = exports.CHECKING_DISABLED = exports.AUTHENTIC_DATA = exports.RECURSION_AVAILABLE = exports.RECURSION_DESIRED = exports.TRUNCATED_RESPONSE = exports.AUTHORITATIVE_ANSWER = exports.NOT_FLUSH_MASK = exports.FLUSH_MASK = exports.string = exports.name = exports.header = exports.question = exports.answer = void 0;
var header = require("./header");
exports.header = header;
var name = require("./name");
exports.name = name;
var string = require("./string");
exports.string = string;
var answer = require("./answer");
exports.answer = answer;
var question = require("./question");
exports.question = question;
var utils_1 = require("./utils");
__exportStar(require("./renc"), exports);
exports.FLUSH_MASK = 1 << 15;
exports.NOT_FLUSH_MASK = ~exports.FLUSH_MASK;
exports.AUTHORITATIVE_ANSWER = 1 << 10;
exports.TRUNCATED_RESPONSE = 1 << 9;
exports.RECURSION_DESIRED = 1 << 8;
exports.RECURSION_AVAILABLE = 1 << 7;
exports.AUTHENTIC_DATA = 1 << 5;
exports.CHECKING_DISABLED = 1 << 4;
exports.DNSSEC_OK = 1 << 15;
function encode(result, buf, offset) {
    if (offset === void 0) { offset = 0; }
    if (!buf)
        buf = Buffer.allocUnsafe(encodingLength(result));
    if (!offset)
        offset = 0;
    var oldOffset = offset;
    if (!result.questions)
        result.questions = [];
    if (!result.answers)
        result.answers = [];
    if (!result.authorities)
        result.authorities = [];
    if (!result.additionals)
        result.additionals = [];
    header.encode(result, buf, offset);
    offset += header.encode.bytes;
    offset = utils_1.encodeList(result.questions, question, buf, offset);
    offset = utils_1.encodeList(result.answers, answer, buf, offset);
    offset = utils_1.encodeList(result.authorities, answer, buf, offset);
    offset = utils_1.encodeList(result.additionals, answer, buf, offset);
    encode.bytes = offset - oldOffset;
    return buf;
}
exports.encode = encode;
encode.bytes = 0;
function decode(buf, offset) {
    if (offset === void 0) { offset = 0; }
    var oldOffset = offset;
    var result = header.decode(buf, offset);
    offset += header.decode.bytes;
    offset = utils_1.decodeList(result.questions, question, buf, offset);
    offset = utils_1.decodeList(result.answers, answer, buf, offset);
    offset = utils_1.decodeList(result.authorities, answer, buf, offset);
    offset = utils_1.decodeList(result.additionals, answer, buf, offset);
    decode.bytes = offset - oldOffset;
    return result;
}
exports.decode = decode;
decode.bytes = 0;
function encodingLength(result) {
    var _a, _b, _c, _d;
    return header.encodingLength() +
        utils_1.encodingLengthList((_a = result.questions) !== null && _a !== void 0 ? _a : [], question) +
        utils_1.encodingLengthList((_b = result.answers) !== null && _b !== void 0 ? _b : [], answer) +
        utils_1.encodingLengthList((_c = result.authorities) !== null && _c !== void 0 ? _c : [], answer) +
        utils_1.encodingLengthList((_d = result.additionals) !== null && _d !== void 0 ? _d : [], answer);
}
exports.encodingLength = encodingLength;
function streamEncode(result) {
    var buf = encode(result);
    var sbuf = Buffer.allocUnsafe(2);
    sbuf.writeUInt16BE(buf.byteLength);
    var combine = Buffer.concat([sbuf, buf]);
    streamEncode.bytes = combine.byteLength;
    return combine;
}
exports.streamEncode = streamEncode;
streamEncode.bytes = 0;
function streamDecode(sbuf) {
    var len = sbuf.readUInt16BE(0);
    if (sbuf.byteLength < len + 2) {
        // not enough data
        return null;
    }
    var result = decode(sbuf.slice(2));
    streamDecode.bytes = decode.bytes;
    return result;
}
exports.streamDecode = streamDecode;
streamDecode.bytes = 0;
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