chore: prettier cleanup
This commit is contained in:
@@ -1,36 +1,37 @@
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import { Buffer } from 'buffer'
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import { Buffer } from "buffer";
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export function parseInput(input) {
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const normalizedInput = input.replace(/\s/g, "");
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const normalizedHexInput = normalizedInput.replace(/0x/g, "").toLowerCase();
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if (isHex(normalizedHexInput)) {
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return Buffer.from(normalizedHexInput, "hex");
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} else {
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return Buffer.from(normalizedInput, "base64");
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}
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const normalizedInput = input.replace(/\s/g, "");
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const normalizedHexInput = normalizedInput.replace(/0x/g, "").toLowerCase();
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if (isHex(normalizedHexInput)) {
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return Buffer.from(normalizedHexInput, "hex");
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} else {
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return Buffer.from(normalizedInput, "base64");
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}
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}
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export function isHex(string) {
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let result = true;
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for (const char of string) {
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if (!((char >= "a" && char <= "f") || (char >= "0" && char <= "9"))) {
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result = false;
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let result = true;
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for (const char of string) {
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if (!((char >= "a" && char <= "f") || (char >= "0" && char <= "9"))) {
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result = false;
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}
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}
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}
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return result;
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return result;
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}
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export function bufferLeToBeHex(buffer) {
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let output = "";
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for (const v of buffer) {
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const hex = v.toString(16);
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if (hex.length === 1) {
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output = "0" + hex + output;
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} else {
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output = hex + output;
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let output = "";
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for (const v of buffer) {
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const hex = v.toString(16);
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if (hex.length === 1) {
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output = "0" + hex + output;
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} else {
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output = hex + output;
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}
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}
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}
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return output;
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return output;
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}
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export const bufferToPrettyHex = b => [...b].map(c => c.toString(16).padStart(2, '0')).join(' ');
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export const bufferToPrettyHex = (b) =>
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[...b].map((c) => c.toString(16).padStart(2, "0")).join(" ");
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@@ -1,132 +1,132 @@
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import { decodeVarint } from "./varintUtils";
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export class BufferReader {
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constructor(buffer) {
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this.buffer = buffer;
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this.offset = 0;
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}
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readVarInt() {
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const result = decodeVarint(this.buffer, this.offset);
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this.offset += result.length;
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return result.value;
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}
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readBuffer(length) {
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this.checkByte(length);
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const result = this.buffer.slice(this.offset, this.offset + length);
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this.offset += length;
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return result;
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}
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// gRPC has some additional header - remove it
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trySkipGrpcHeader() {
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const backupOffset = this.offset;
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if (this.buffer[this.offset] === 0 && this.leftBytes() >= 5) {
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this.offset++;
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const length = this.buffer.readInt32BE(this.offset);
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this.offset += 4;
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if (length > this.leftBytes()) {
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// Something is wrong, revert
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this.offset = backupOffset;
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}
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constructor(buffer) {
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this.buffer = buffer;
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this.offset = 0;
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}
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}
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leftBytes() {
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return this.buffer.length - this.offset;
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}
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readVarInt() {
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const result = decodeVarint(this.buffer, this.offset);
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this.offset += result.length;
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checkByte(length) {
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const bytesAvailable = this.leftBytes();
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if (length > bytesAvailable) {
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throw new Error(
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"Not enough bytes left. Requested: " +
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length +
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" left: " +
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bytesAvailable
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);
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return result.value;
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}
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}
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checkpoint() {
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this.savedOffset = this.offset;
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}
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readBuffer(length) {
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this.checkByte(length);
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const result = this.buffer.slice(this.offset, this.offset + length);
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this.offset += length;
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resetToCheckpoint() {
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this.offset = this.savedOffset;
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}
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return result;
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}
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// gRPC has some additional header - remove it
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trySkipGrpcHeader() {
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const backupOffset = this.offset;
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if (this.buffer[this.offset] === 0 && this.leftBytes() >= 5) {
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this.offset++;
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const length = this.buffer.readInt32BE(this.offset);
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this.offset += 4;
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if (length > this.leftBytes()) {
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// Something is wrong, revert
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this.offset = backupOffset;
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}
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}
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}
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leftBytes() {
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return this.buffer.length - this.offset;
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}
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checkByte(length) {
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const bytesAvailable = this.leftBytes();
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if (length > bytesAvailable) {
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throw new Error(
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"Not enough bytes left. Requested: " +
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length +
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" left: " +
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bytesAvailable,
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);
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}
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}
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checkpoint() {
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this.savedOffset = this.offset;
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}
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resetToCheckpoint() {
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this.offset = this.savedOffset;
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}
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}
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export const TYPES = {
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VARINT: 0,
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FIXED64: 1,
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LENDELIM: 2,
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FIXED32: 5
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VARINT: 0,
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FIXED64: 1,
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LENDELIM: 2,
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FIXED32: 5,
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};
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export function decodeProto(buffer) {
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const reader = new BufferReader(buffer);
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const parts = [];
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reader.trySkipGrpcHeader();
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const reader = new BufferReader(buffer);
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const parts = [];
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reader.trySkipGrpcHeader();
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try {
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while (reader.leftBytes() > 0) {
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reader.checkpoint();
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try {
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while (reader.leftBytes() > 0) {
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reader.checkpoint();
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const byteRange = [reader.offset];
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const indexType = parseInt(reader.readVarInt().toString());
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const type = indexType & 0b111;
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const index = indexType >> 3;
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const byteRange = [reader.offset];
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const indexType = parseInt(reader.readVarInt().toString());
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const type = indexType & 0b111;
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const index = indexType >> 3;
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let value;
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if (type === TYPES.VARINT) {
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value = reader.readVarInt().toString();
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} else if (type === TYPES.LENDELIM) {
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const length = parseInt(reader.readVarInt().toString());
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value = reader.readBuffer(length);
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} else if (type === TYPES.FIXED32) {
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value = reader.readBuffer(4);
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} else if (type === TYPES.FIXED64) {
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value = reader.readBuffer(8);
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} else {
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throw new Error("Unknown type: " + type);
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}
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byteRange.push(reader.offset);
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let value;
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if (type === TYPES.VARINT) {
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value = reader.readVarInt().toString();
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} else if (type === TYPES.LENDELIM) {
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const length = parseInt(reader.readVarInt().toString());
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value = reader.readBuffer(length);
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} else if (type === TYPES.FIXED32) {
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value = reader.readBuffer(4);
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} else if (type === TYPES.FIXED64) {
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value = reader.readBuffer(8);
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} else {
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throw new Error("Unknown type: " + type);
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}
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byteRange.push(reader.offset);
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parts.push({
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byteRange,
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index,
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type,
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value
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});
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parts.push({
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byteRange,
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index,
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type,
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value,
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});
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}
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} catch (err) {
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reader.resetToCheckpoint();
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console.log(err);
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}
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} catch (err) {
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reader.resetToCheckpoint();
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console.log(err);
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}
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return {
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parts,
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leftOver: reader.readBuffer(reader.leftBytes())
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};
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return {
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parts,
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leftOver: reader.readBuffer(reader.leftBytes()),
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};
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}
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export function typeToString(type, subType) {
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switch (type) {
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case TYPES.VARINT:
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return "varint";
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case TYPES.LENDELIM:
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return subType || "len_delim";
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case TYPES.FIXED32:
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return "fixed32";
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case TYPES.FIXED64:
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return "fixed64";
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default:
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return "unknown";
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}
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switch (type) {
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case TYPES.VARINT:
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return "varint";
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case TYPES.LENDELIM:
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return subType || "len_delim";
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case TYPES.FIXED32:
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return "fixed32";
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case TYPES.FIXED64:
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return "fixed64";
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default:
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return "unknown";
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}
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}
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@@ -1,23 +1,23 @@
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export function decodeVarint(buffer, offset) {
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let res = 0;
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let shift = 0;
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let byte = 0;
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let res = 0;
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let shift = 0;
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let byte = 0;
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do {
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if (offset >= buffer.length) {
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throw new RangeError("Index out of bound decoding varint");
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}
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do {
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if (offset >= buffer.length) {
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throw new RangeError("Index out of bound decoding varint");
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}
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byte = buffer[offset++];
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byte = buffer[offset++];
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const multiplier = 2 ** shift;
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const thisByteValue = (byte & 0x7f) * multiplier;
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shift += 7;
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res = res + thisByteValue;
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} while (byte >= 0x80);
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const multiplier = 2 ** shift;
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const thisByteValue = (byte & 0x7f) * multiplier;
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shift += 7;
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res = res + thisByteValue;
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} while (byte >= 0x80);
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return {
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value: res,
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length: shift / 7
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};
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return {
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value: res,
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length: shift / 7,
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};
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}
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