45 lines
1.1 KiB
TypeScript
45 lines
1.1 KiB
TypeScript
import _sha1 from "sha1";
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import _md5 from "md5";
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import { HashDef } from "../types/hashDef";
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/**
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* Returns the hash sum of bytes of given bytes using SHA1.
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*
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* This is what CurseForge and Forge are using to check files.
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*/
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export const sha1 = (inputBuffer: Buffer): string => {
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return _sha1(inputBuffer);
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};
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/**
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* Returns the hash sum of bytes of given bytes using MD5.
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*
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* This is what CF is using to check files.
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*/
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export const md5 = (inputBuffer: Buffer): string => {
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return _md5(inputBuffer);
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};
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const hashFuncs: { [key: string]: (buffer: Buffer) => string } = {
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sha1,
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md5,
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};
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/**
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* Compare buffer to the given HashDef.
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*
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* @param {Buffer} buffer
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* @param {HashDef} hashDef
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*
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* @throws {Error} Throws a generic error if hashes don't match.
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*/
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export const compareBufferToHashDef = (buffer: Buffer, hashDef: HashDef): boolean => {
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if (!hashFuncs[hashDef.id]) {
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throw new Error(`No hash function found for ${hashDef.id}.`);
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}
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const sum = hashFuncs[hashDef.id](buffer);
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return (Array.isArray(hashDef.hashes) && hashDef.hashes.includes(sum)) || hashDef.hashes == sum;
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};
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