implement packet compression, implement player controller, implement join server authentication, add cobblestone, implement chunk provider, implement block position, implement session, implement movement, chunk, chat and block update packets, version 1.1.5
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LabyStudio
+135
-102
@@ -2,126 +2,159 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// https://git.coolaj86.com/coolaj86/asn1-parser.js
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;(function (exports) {
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'use strict';
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let ELOOPN = 102;
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let EDEEPN = 60;
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let CTYPES = [0x30, 0x31, 0xa0, 0xa1];
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let VTYPES = [0x01, 0x02, 0x05, 0x06, 0x0c, 0x82];
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if (!exports.ASN1) { exports.ASN1 = {}; }
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if (!exports.Enc) { exports.Enc = {}; }
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if (!exports.PEM) { exports.PEM = {}; }
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function parseAsn1(buf) {
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//let ws = ' ';
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function parseAsn1(buf, depth, eager) {
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if (depth.length >= EDEEPN) {
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throw new Error("EDEEP");
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}
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var ASN1 = exports.ASN1;
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var Enc = exports.Enc;
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var PEM = exports.PEM;
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let index = 2; // we know, at minimum, data starts after type (0) and lengthSize (1)
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let asn1 = {type: buf[0], lengthSize: 0, length: buf[1]};
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let child;
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let iters = 0;
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let adjust = 0;
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let adjustedLen;
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//
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// Parser
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//
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// Although I've only seen 9 max in https certificates themselves,
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// but each domain list could have up to 100
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ASN1.ELOOPN = 102;
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ASN1.ELOOP = "uASN1.js Error: iterated over " + ASN1.ELOOPN + "+ elements (probably a malformed file)";
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// I've seen https certificates go 29 deep
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ASN1.EDEEPN = 60;
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ASN1.EDEEP = "uASN1.js Error: element nested " + ASN1.EDEEPN + "+ layers deep (probably a malformed file)";
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// Container Types are Sequence 0x30, Container Array? (0xA0, 0xA1)
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// Value Types are Boolean 0x01, Integer 0x02, Null 0x05, Object ID 0x06, String 0x0C, 0x16, 0x13, 0x1e Value Array? (0x82)
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// Bit String (0x03) and Octet String (0x04) may be values or containers
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// Sometimes Bit String is used as a container (RSA Pub Spki)
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ASN1.CTYPES = [ 0x30, 0x31, 0xa0, 0xa1 ];
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ASN1.VTYPES = [ 0x01, 0x02, 0x05, 0x06, 0x0c, 0x82 ];
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ASN1.parse = function parseAsn1Helper(buf) {
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//var ws = ' ';
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function parseAsn1(buf, depth, eager) {
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if (depth.length >= ASN1.EDEEPN) { throw new Error(ASN1.EDEEP); }
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// Determine how many bytes the length uses, and what it is
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if (0x80 & asn1.length) {
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asn1.lengthSize = 0x7f & asn1.length;
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// I think that buf->hex->int solves the problem of Endianness... not sure
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asn1.length = parseInt(bufToHex(buf.slice(index, index + asn1.lengthSize)), 16);
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index += asn1.lengthSize;
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}
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var index = 2; // we know, at minimum, data starts after type (0) and lengthSize (1)
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var asn1 = { type: buf[0], lengthSize: 0, length: buf[1] };
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var child;
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var iters = 0;
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var adjust = 0;
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var adjustedLen;
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// High-order bit Integers have a leading 0x00 to signify that they are positive.
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// Bit Streams use the first byte to signify padding, which x.509 doesn't use.
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if (0x00 === buf[index] && (0x02 === asn1.type || 0x03 === asn1.type)) {
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// However, 0x00 on its own is a valid number
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if (asn1.length > 1) {
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index += 1;
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adjust = -1;
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// Determine how many bytes the length uses, and what it is
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if (0x80 & asn1.length) {
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asn1.lengthSize = 0x7f & asn1.length;
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// I think that buf->hex->int solves the problem of Endianness... not sure
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asn1.length = parseInt(Enc.bufToHex(buf.slice(index, index + asn1.lengthSize)), 16);
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index += asn1.lengthSize;
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}
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}
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adjustedLen = asn1.length + adjust;
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function bufToHex(u8) {
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let hex = [];
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let i, h;
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let len = (u8.byteLength || u8.length);
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for (i = 0; i < len; i += 1) {
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h = u8[i].toString(16);
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if (h.length % 2) {
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h = '0' + h;
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// High-order bit Integers have a leading 0x00 to signify that they are positive.
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// Bit Streams use the first byte to signify padding, which x.509 doesn't use.
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if (0x00 === buf[index] && (0x02 === asn1.type || 0x03 === asn1.type)) {
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// However, 0x00 on its own is a valid number
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if (asn1.length > 1) {
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index += 1;
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adjust = -1;
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}
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hex.push(h);
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}
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adjustedLen = asn1.length + adjust;
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return hex.join('').toLowerCase();
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}
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//console.warn(depth.join(ws) + '0x' + Enc.numToHex(asn1.type), index, 'len:', asn1.length, asn1);
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function parseChildren(eager) {
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asn1.children = [];
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//console.warn('1 len:', (2 + asn1.lengthSize + asn1.length), 'idx:', index, 'clen:', 0);
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while (iters < ELOOPN && index < (2 + asn1.length + asn1.lengthSize)) {
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iters += 1;
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depth.length += 1;
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child = parseAsn1(buf.slice(index, index + adjustedLen), depth, eager);
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depth.length -= 1;
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// The numbers don't match up exactly and I don't remember why...
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// probably something with adjustedLen or some such, but the tests pass
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index += (2 + child.lengthSize + child.length);
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//console.warn('2 len:', (2 + asn1.lengthSize + asn1.length), 'idx:', index, 'clen:', (2 + child.lengthSize + child.length));
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if (index > (2 + asn1.lengthSize + asn1.length)) {
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if (!eager) {
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console.error("error");
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//console.warn(depth.join(ws) + '0x' + Enc.numToHex(asn1.type), index, 'len:', asn1.length, asn1);
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function parseChildren(eager) {
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asn1.children = [];
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//console.warn('1 len:', (2 + asn1.lengthSize + asn1.length), 'idx:', index, 'clen:', 0);
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while (iters < ASN1.ELOOPN && index < (2 + asn1.length + asn1.lengthSize)) {
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iters += 1;
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depth.length += 1;
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child = parseAsn1(buf.slice(index, index + adjustedLen), depth, eager);
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depth.length -= 1;
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// The numbers don't match up exactly and I don't remember why...
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// probably something with adjustedLen or some such, but the tests pass
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index += (2 + child.lengthSize + child.length);
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//console.warn('2 len:', (2 + asn1.lengthSize + asn1.length), 'idx:', index, 'clen:', (2 + child.lengthSize + child.length));
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if (index > (2 + asn1.lengthSize + asn1.length)) {
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if (!eager) { console.error(JSON.stringify(asn1, ASN1._replacer, 2)); }
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throw new Error("Parse error: child value length (" + child.length
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+ ") is greater than remaining parent length (" + (asn1.length - index)
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+ " = " + asn1.length + " - " + index + ")");
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}
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throw new Error("Parse error: child value length (" + child.length
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+ ") is greater than remaining parent length (" + (asn1.length - index)
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+ " = " + asn1.length + " - " + index + ")");
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asn1.children.push(child);
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//console.warn(depth.join(ws) + '0x' + Enc.numToHex(asn1.type), index, 'len:', asn1.length, asn1);
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}
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asn1.children.push(child);
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//console.warn(depth.join(ws) + '0x' + Enc.numToHex(asn1.type), index, 'len:', asn1.length, asn1);
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}
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if (index !== (2 + asn1.lengthSize + asn1.length)) {
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//console.warn('index:', index, 'length:', (2 + asn1.lengthSize + asn1.length));
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throw new Error("premature end-of-file");
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}
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if (iters >= ELOOPN) {
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throw new Error("ELOOP");
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if (index !== (2 + asn1.lengthSize + asn1.length)) {
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//console.warn('index:', index, 'length:', (2 + asn1.lengthSize + asn1.length));
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throw new Error("premature end-of-file");
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}
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if (iters >= ASN1.ELOOPN) { throw new Error(ASN1.ELOOP); }
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delete asn1.value;
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return asn1;
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}
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delete asn1.value;
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return asn1;
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// Recurse into types that are _always_ containers
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if (-1 !== ASN1.CTYPES.indexOf(asn1.type)) { return parseChildren(eager); }
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// Return types that are _always_ values
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asn1.value = buf.slice(index, index + adjustedLen);
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if (-1 !== ASN1.VTYPES.indexOf(asn1.type)) { return asn1; }
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// For ambigious / unknown types, recurse and return on failure
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// (and return child array size to zero)
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try { return parseChildren(true); }
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catch(e) { asn1.children.length = 0; return asn1; }
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}
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// Recurse into types that are _always_ containers
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if (-1 !== CTYPES.indexOf(asn1.type)) {
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return parseChildren(eager);
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var asn1 = parseAsn1(buf, []);
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var len = buf.byteLength || buf.length;
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if (len !== 2 + asn1.lengthSize + asn1.length) {
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throw new Error("Length of buffer does not match length of ASN.1 sequence.");
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}
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return asn1;
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};
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ASN1._replacer = function (k, v) {
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if ('type' === k) { return '0x' + Enc.numToHex(v); }
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if (v && 'value' === k) { return '0x' + Enc.bufToHex(v.data || v); }
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return v;
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};
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// don't replace the full parseBlock, if it exists
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PEM.parseBlock = PEM.parseBlock || function (str) {
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var der = str.split(/\n/).filter(function (line) {
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return !/-----/.test(line);
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}).join('');
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return { der: Enc.base64ToBuf(der) };
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};
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Enc.base64ToBuf = function (b64) {
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return Enc.binToBuf(atob(b64));
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};
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Enc.binToBuf = function (bin) {
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var arr = bin.split('').map(function (ch) {
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return ch.charCodeAt(0);
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});
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return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
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};
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Enc.bufToHex = function (u8) {
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var hex = [];
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var i, h;
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var len = (u8.byteLength || u8.length);
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for (i = 0; i < len; i += 1) {
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h = u8[i].toString(16);
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if (h.length % 2) { h = '0' + h; }
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hex.push(h);
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}
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// Return types that are _always_ values
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asn1.value = buf.slice(index, index + adjustedLen);
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if (-1 !== VTYPES.indexOf(asn1.type)) {
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return asn1;
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return hex.join('').toLowerCase();
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};
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Enc.numToHex = function (d) {
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d = d.toString(16);
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if (d.length % 2) {
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return '0' + d;
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}
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return d;
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};
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// For ambigious / unknown types, recurse and return on failure
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// (and return child array size to zero)
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try {
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return parseChildren(true);
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} catch (e) {
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asn1.children.length = 0;
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return asn1;
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}
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}
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let asn1 = parseAsn1(buf, []);
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let len = buf.byteLength || buf.length;
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if (len !== 2 + asn1.lengthSize + asn1.length) {
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throw new Error("Length of buffer does not match length of ASN.1 sequence.");
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}
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return asn1;
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}
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export {parseAsn1};
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}('undefined' !== typeof window ? window : module.exports));
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