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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| import FilePoly from '../../polyfill/filePoly.js'; | ||
| import File from '../files/file.js'; | ||
| import Patch from './patch.js'; | ||
|
|
||
| enum NinjaCommand { | ||
| TERMINATE = 0x00, | ||
| OPEN = 0x01, | ||
| XOR = 0x02, | ||
| } | ||
|
|
||
| enum NinjaFileType { | ||
| RAW = 0, | ||
| NES = 1, | ||
| FDS = 2, | ||
| SNES = 3, | ||
| N64 = 4, | ||
| GB = 5, | ||
| SMS = 6, | ||
| MEGA = 7, | ||
| PCE = 8, | ||
| LYNX = 9, | ||
| } | ||
|
|
||
| /** | ||
| * @link https://www.romhacking.net/utilities/329/ | ||
| */ | ||
| export default class NinjaPatch extends Patch { | ||
| static readonly SUPPORTED_EXTENSIONS = ['.rup']; | ||
|
|
||
| static patchFrom(file: File): NinjaPatch { | ||
| const crcBefore = Patch.getCrcFromPath(file.getExtractedFilePath()); | ||
| return new NinjaPatch(file, crcBefore); | ||
| } | ||
|
|
||
| async apply<T>(file: File, callback: (tempFile: string) => (Promise<T> | T)): Promise<T> { | ||
| return this.getFile().extractToFile(async (patchFilePath) => { | ||
| const patchFile = await FilePoly.fileFrom(patchFilePath, 'r'); | ||
|
|
||
| const header = (await patchFile.readNext(5)).toString(); | ||
| if (header !== 'NINJA') { | ||
| await patchFile.close(); | ||
| throw new Error(`NINJA patch header is invalid: ${this.getFile().toString()}`); | ||
| } | ||
| const version = parseInt((await patchFile.readNext(1)).toString(), 10); | ||
| if (version !== 2) { | ||
| await patchFile.close(); | ||
| throw new Error(`NINJA v${version} isn't supported: ${this.getFile().toString()}`); | ||
| } | ||
|
|
||
| patchFile.skipNext(1); // encoding | ||
| patchFile.skipNext(84); // author | ||
| patchFile.skipNext(11); // version | ||
| patchFile.skipNext(256); // title | ||
| patchFile.skipNext(48); // genre | ||
| patchFile.skipNext(48); // language | ||
| patchFile.skipNext(8); // date | ||
| patchFile.skipNext(512); // website | ||
| patchFile.skipNext(1074); // info | ||
|
|
||
| const result = await file.extractToFile(async (tempFile) => { | ||
| const targetFile = await FilePoly.fileFrom(tempFile, 'r+'); | ||
|
|
||
| /* eslint-disable no-await-in-loop */ | ||
| while (!patchFile.isEOF()) { | ||
| const command = (await patchFile.readNext(1)).readUint8(); | ||
|
|
||
| if (command === NinjaCommand.TERMINATE) { | ||
| break; | ||
| } else if (command === NinjaCommand.OPEN) { | ||
| const multiFile = (await patchFile.readNext(1)).readUint8(); | ||
| if (multiFile > 0) { | ||
| await targetFile.close(); | ||
| throw new Error(`Multi-file NINJA patches aren't supported: ${this.getFile().toString()}`); | ||
| } | ||
|
|
||
| const fileNameLength = multiFile > 0 | ||
| ? (await patchFile.readNext(multiFile)).readUIntLE(0, multiFile) | ||
| : 0; | ||
| patchFile.skipNext(fileNameLength); // file name | ||
| const fileType = (await patchFile.readNext(1)).readUint8(); | ||
| if (fileType > 0) { | ||
| await targetFile.close(); | ||
| throw new Error(`Unsupported NINJA file type ${NinjaFileType[fileType]}: ${this.getFile().toString()}`); | ||
| } | ||
| const sourceFileSizeLength = (await patchFile.readNext(1)).readUint8(); | ||
| const sourceFileSize = (await patchFile.readNext(sourceFileSizeLength)) | ||
| .readUIntLE(0, sourceFileSizeLength); | ||
| const modifiedFileSizeLength = (await patchFile.readNext(1)).readUint8(); | ||
| const modifiedFileSize = (await patchFile.readNext(modifiedFileSizeLength)) | ||
| .readUIntLE(0, modifiedFileSizeLength); | ||
| patchFile.skipNext(16); // source MD5 | ||
| patchFile.skipNext(16); // modified MD5 | ||
|
|
||
| if (sourceFileSize !== modifiedFileSize) { | ||
| patchFile.skipNext(1); // "M" or "A" | ||
| const overflowSizeLength = (await patchFile.readNext(1)).readUint8(); | ||
| const overflowSize = overflowSizeLength > 0 | ||
| ? (await patchFile.readNext(overflowSizeLength)).readUIntLE(0, overflowSizeLength) | ||
| : 0; | ||
| const overflow = overflowSize > 0 | ||
| ? await patchFile.readNext(overflowSize) | ||
| : Buffer.alloc(overflowSize); | ||
| /* eslint-disable no-bitwise */ | ||
| for (let i = 0; i < overflow.length; i += 1) { | ||
| overflow[i] ^= 255; // NOTE(cemmer): this isn't documented anywhere | ||
| } | ||
| if (modifiedFileSize > sourceFileSize) { | ||
| await targetFile.writeAt(overflow, targetFile.getSize()); | ||
| } | ||
| } | ||
| } else if (command === NinjaCommand.XOR) { | ||
| const offsetLength = (await patchFile.readNext(1)).readUint8(); | ||
| const offset = (await patchFile.readNext(offsetLength)).readUIntLE(0, offsetLength); | ||
| targetFile.seek(offset); | ||
|
|
||
| const lengthLength = (await patchFile.readNext(1)).readUint8(); | ||
| const length = (await patchFile.readNext(lengthLength)).readUIntLE(0, lengthLength); | ||
| const sourceData = await targetFile.readNext(length); | ||
|
|
||
| const xorData = await patchFile.readNext(length); | ||
| const targetData = Buffer.allocUnsafe(length); | ||
| /* eslint-disable no-bitwise */ | ||
| for (let i = 0; i < length; i += 1) { | ||
| targetData[i] = (i < sourceData.length ? sourceData[i] : 0x00) ^ xorData[i]; | ||
| } | ||
| await targetFile.writeAt(targetData, offset); | ||
| } | ||
| } | ||
|
|
||
| await targetFile.close(); | ||
|
|
||
| return callback(tempFile); | ||
| }); | ||
|
|
||
| await patchFile.close(); | ||
|
|
||
| return result; | ||
| }); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| 612644F1BA96586196EC27060CAE9D3F147729D8857899F16BAEC1C41A78FEB7E64333FECBDAB8A499328A099441899A9C30A741A55709647250264D061A06B413F3197E3AF5316D29246217C7C4792E5436AFE1F36E91C2963E31845FE4941A23DD63CD9D4E78497A33BA785FF5042CDC3A208C12CD6E3C5F9312C0411BDA969D175E380CBC3DAE9A708A3F6D885B21BBF3DCF68A1264F89741020AC332400FFB65A0927871BD766B115E26E4FD5262EA9E41CA5BF6849CC0AAFF14247646EB680FAA5E8C3299C9FAE9B0B57A02F3781C1658B8EE3BA9842AE698C0C5D166F44078B2E0F3D53614FFA593CA48C006F0471F474DA91889FD4593AD1809EE1BDC5A3764B0EE21D4264D65ACEB4C20758E5522D2AB29914B23DBD4190ECE41E4CFFCBF3578C8B740A6417BFF288224FA93B99A67C664E9D825497C40E32AB82508CC860085651056EADB232D93F7FB63A6CA67CD7C02FB466613A2FE6310F7AA7ECEFF5119DDB9F4D7022DE678E05D83C6D8A3C1B01E44E20ED6040C9938FD5E5017A6AE602DF579A5E4B91F88B3E93096742EB75664FF5155B5D90AB728578BBF700588B3678076EAD8F44AF7592AEFB6FEFF445FC07187BB2670C63C972A662C03421AB023CD8323EA6801112C3BE14C36479BCB24B000E99D0B073BC9881A03E69AF5BDA011DA3B220B3BD250B2CF5354D5DE85C0294701E878643015362B8B |
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