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Added 'Parse TCP' operation

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This commit is contained in:
n1474335 2022-05-30 18:06:15 +01:00
parent 477e4a7421
commit a895d1d82a
14 changed files with 430 additions and 81 deletions
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24
src/core/lib/FileSignatures.mjs
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@ -3778,8 +3778,8 @@ function parseDEFLATE(stream) {
while (!finalBlock) {
// Read header
finalBlock = stream.readBits(1);
const blockType = stream.readBits(2);
finalBlock = stream.readBits(1, "le");
const blockType = stream.readBits(2, "le");
if (blockType === 0) {
/* No compression */
@ -3798,16 +3798,16 @@ function parseDEFLATE(stream) {
/* Dynamic Huffman */
// Read the number of liternal and length codes
const hlit = stream.readBits(5) + 257;
const hlit = stream.readBits(5, "le") + 257;
// Read the number of distance codes
const hdist = stream.readBits(5) + 1;
const hdist = stream.readBits(5, "le") + 1;
// Read the number of code lengths
const hclen = stream.readBits(4) + 4;
const hclen = stream.readBits(4, "le") + 4;
// Parse code lengths
const codeLengths = new Uint8Array(huffmanOrder.length);
for (let i = 0; i < hclen; i++) {
codeLengths[huffmanOrder[i]] = stream.readBits(3);
codeLengths[huffmanOrder[i]] = stream.readBits(3, "le");
}
// Parse length table
@ -3819,16 +3819,16 @@ function parseDEFLATE(stream) {
code = readHuffmanCode(stream, codeLengthsTable);
switch (code) {
case 16:
repeat = 3 + stream.readBits(2);
repeat = 3 + stream.readBits(2, "le");
while (repeat--) lengthTable[i++] = prev;
break;
case 17:
repeat = 3 + stream.readBits(3);
repeat = 3 + stream.readBits(3, "le");
while (repeat--) lengthTable[i++] = 0;
prev = 0;
break;
case 18:
repeat = 11 + stream.readBits(7);
repeat = 11 + stream.readBits(7, "le");
while (repeat--) lengthTable[i++] = 0;
prev = 0;
break;
@ -3886,11 +3886,11 @@ function parseHuffmanBlock(stream, litTab, distTab) {
if (code < 256) continue;
// Length code
stream.readBits(lengthExtraTable[code - 257]);
stream.readBits(lengthExtraTable[code - 257], "le");
// Dist code
code = readHuffmanCode(stream, distTab);
stream.readBits(distanceExtraTable[code]);
stream.readBits(distanceExtraTable[code], "le");
}
}
@ -3948,7 +3948,7 @@ function readHuffmanCode(stream, table) {
const [codeTable, maxCodeLength] = table;
// Read max length
const bitsBuf = stream.readBits(maxCodeLength);
const bitsBuf = stream.readBits(maxCodeLength, "le");
const codeWithLength = codeTable[bitsBuf & ((1 << maxCodeLength) - 1)];
const codeLength = codeWithLength >>> 16;