Files
myDrive/backend/services/ChunkService/chunkService.ts
T
2024-08-10 01:41:02 -04:00

458 lines
13 KiB
TypeScript

import { Response, Request } from "express";
import { UserInterface } from "../../models/userModel";
import NotAuthorizedError from "../../utils/NotAuthorizedError";
import NotFoundError from "../../utils/NotFoundError";
import crypto from "crypto";
import getBusboyData from "./utils/getBusboyData";
import videoChecker from "../../utils/videoChecker";
import uuid from "uuid";
import File, { FileInterface } from "../../models/fileModel";
import FileDB from "../../db/mongoDB/fileDB";
import FolderDB from "../../db/mongoDB/folderDB";
import Thumbnail, { ThumbnailInterface } from "../../models/thumbnailModel";
import User from "../../models/userModel";
import env from "../../enviroment/env";
import fixStartChunkLength from "./utils/fixStartChunkLength";
import Folder, { FolderInterface } from "../../models/folderModel";
import ForbiddenError from "../../utils/ForbiddenError";
import { ObjectId } from "mongodb";
import { S3Actions } from "./actions/S3Actions";
import { FilesystemActions } from "./actions/fileSystemActions";
import { createGenericParams } from "./utils/storageHelper";
const fileDB = new FileDB();
const folderDB = new FolderDB();
const storageActions =
env.dbType === "s3" ? new S3Actions() : new FilesystemActions();
class StorageService {
constructor() {}
uploadFile = async (user: UserInterface, busboy: any, req: Request) => {
const password = user.getEncryptionKey();
if (!password) throw new ForbiddenError("Invalid Encryption Key");
const initVect = crypto.randomBytes(16);
const CIPHER_KEY = crypto.createHash("sha256").update(password).digest();
const cipher = crypto.createCipheriv("aes256", CIPHER_KEY, initVect);
const { file, filename: fileInfo, formData } = await getBusboyData(busboy);
const filename = fileInfo.filename;
const parent = formData.get("parent") || "/";
const size = formData.get("size") || "";
let hasThumbnail = false;
let thumbnailID = "";
const isVideo = videoChecker(filename);
const parentList = [];
if (parent !== "/") {
const parentFolder = await folderDB.getFolderInfo(
parent,
user._id.toString()
);
if (!parentFolder) throw new NotFoundError("Parent Folder Not Found");
parentList.push(...parentFolder.parentList, parentFolder._id);
} else {
parentList.push("/");
}
const randomFilenameID = uuid.v4();
const metadata = {
owner: user._id,
parent,
parentList: parentList.toString(),
hasThumbnail,
thumbnailID,
isVideo,
size,
IV: initVect,
} as any;
if (env.dbType === "fs") {
metadata.filePath = env.fsDirectory + randomFilenameID;
} else {
metadata.s3ID = randomFilenameID;
}
const fileWriteStream = storageActions.createWriteStream(
metadata,
file.pipe(cipher),
randomFilenameID
);
return {
cipher,
fileWriteStream,
metadata,
filename,
};
};
downloadFile = async (user: UserInterface, fileID: string, res: Response) => {
const currentFile = await fileDB.getFileInfo(fileID, user._id.toString());
if (!currentFile) throw new NotFoundError("Download File Not Found");
const password = user.getEncryptionKey();
if (!password) throw new ForbiddenError("Invalid Encryption Key");
const IV = currentFile.metadata.IV;
const readStreamParams = createGenericParams({
filePath: currentFile.metadata.filePath,
Key: currentFile.metadata.s3ID,
});
const readStream = storageActions.createReadStream(readStreamParams);
const CIPHER_KEY = crypto.createHash("sha256").update(password).digest();
const decipher = crypto.createDecipheriv("aes256", CIPHER_KEY, IV);
return {
readStream,
decipher,
file: currentFile,
};
};
getThumbnail = async (user: UserInterface, id: string) => {
const password = user.getEncryptionKey();
if (!password) throw new ForbiddenError("Invalid Encryption Key");
const thumbnail = (await Thumbnail.findById(
new ObjectId(id)
)) as ThumbnailInterface;
if (thumbnail.owner !== user._id.toString()) {
throw new ForbiddenError("Thumbnail Unauthorized Error");
}
const iv = thumbnail.IV;
const CIPHER_KEY = crypto.createHash("sha256").update(password).digest();
const decipher = crypto.createDecipheriv("aes256", CIPHER_KEY, iv);
const readStreamParams = createGenericParams({
filePath: thumbnail.path,
Key: thumbnail.s3ID,
});
const readStream = storageActions.createReadStream(readStreamParams);
return {
readStream,
decipher,
};
};
getFullThumbnail = async (user: UserInterface, fileID: string) => {
const userID = user._id;
const file = await fileDB.getFileInfo(fileID, userID.toString());
if (!file) throw new NotFoundError("File Thumbnail Not Found");
const password = user.getEncryptionKey();
const IV = file.metadata.IV;
if (!password) throw new ForbiddenError("Invalid Encryption Key");
const readStreamParams = createGenericParams({
filePath: file.metadata.filePath,
Key: file.metadata.s3ID,
});
const readStream = storageActions.createReadStream(readStreamParams);
const CIPHER_KEY = crypto.createHash("sha256").update(password).digest();
const decipher = crypto.createDecipheriv("aes256", CIPHER_KEY, IV);
return {
readStream,
decipher,
file,
};
};
streamVideo = async (user: UserInterface, fileID: string, headers: any) => {
const userID = user._id;
const currentFile = await fileDB.getFileInfo(fileID, userID.toString());
if (!currentFile) throw new NotFoundError("Video File Not Found");
const password = user.getEncryptionKey();
if (!password) throw new ForbiddenError("Invalid Encryption Key");
const fileSize = currentFile.metadata.size;
const range = headers.range;
const parts = range.replace(/bytes=/, "").split("-");
let start = parseInt(parts[0], 10);
let end = parts[1] ? parseInt(parts[1], 10) : fileSize - 1;
const IV = currentFile.metadata.IV;
const chunksize = end - start + 1;
let head = {
"Content-Range": "bytes " + start + "-" + end + "/" + fileSize,
"Accept-Ranges": "bytes",
"Content-Length": chunksize,
"Content-Type": "video/mp4",
};
let currentIV = IV;
let fixedStart = 0;
let fixedEnd = currentFile.length;
if (start === 0 && end === 1) {
fixedStart = 0;
fixedEnd = 15;
} else {
fixedStart = start % 16 === 0 ? start : fixStartChunkLength(start);
}
if (+start === 0) {
fixedStart = 0;
}
const readStreamParams = createGenericParams({
filePath: currentFile.metadata.filePath,
Key: currentFile.metadata.s3ID,
});
if (fixedStart !== 0 && start !== 0) {
currentIV = (await storageActions.getPrevIV(
readStreamParams,
fixedStart - 16
)) as Buffer;
}
const readStream = storageActions.createReadStreamWithRange(
readStreamParams,
fixedStart,
fixedEnd
);
const CIPHER_KEY = crypto.createHash("sha256").update(password).digest();
const decipher = crypto.createDecipheriv("aes256", CIPHER_KEY, currentIV);
decipher.setAutoPadding(false);
return {
readStream,
decipher,
file: currentFile,
head,
};
};
getPublicDownload = async (fileID: string, tempToken: any, res: Response) => {
const file = await fileDB.getPublicFile(fileID);
if (!file || !file.metadata.link || file.metadata.link !== tempToken) {
throw new NotAuthorizedError("File Not Public");
}
if (file.metadata.linkType === "one") {
await fileDB.removeOneTimePublicLink(fileID);
}
const user = (await User.findById(file.metadata.owner)) as UserInterface;
const password = user.getEncryptionKey();
if (!password) throw new ForbiddenError("Invalid Encryption Key");
const IV = file.metadata.IV;
const readStreamParams = createGenericParams({
filePath: file.metadata.filePath,
Key: file.metadata.s3ID,
});
const readStream = storageActions.createReadStream(readStreamParams);
const CIPHER_KEY = crypto.createHash("sha256").update(password).digest();
const decipher = crypto.createDecipheriv("aes256", CIPHER_KEY, IV);
return {
readStream,
decipher,
file: file,
};
};
deleteMulti = async (
userID: string,
items: {
type: "file" | "folder" | "quick-item";
id: string;
file?: FileInterface;
folder?: FolderInterface;
}[]
) => {
const fileList = items.filter(
(item) => item.type === "file" || item.type === "quick-item"
);
const folderList = items
.filter((item) => item.type === "folder")
.sort((a, b) => {
if (!a.folder || !b.folder) return 0;
return b.folder.parentList.length - a.folder.parentList.length;
});
for (const file of fileList) {
await this.deleteFile(userID, file.id);
}
for (const folder of folderList) {
await this.deleteFolder(userID, folder.id);
}
};
deleteFile = async (userID: string, fileID: string) => {
const file = await fileDB.getFileInfo(fileID, userID);
if (!file) throw new NotFoundError("Delete File Not Found Error");
if (file.metadata.thumbnailID) {
const thumbnail = (await Thumbnail.findById(
file.metadata.thumbnailID
)) as ThumbnailInterface;
const removeChunksParams = createGenericParams({
filePath: thumbnail.path,
Key: thumbnail.s3ID,
});
await storageActions.removeChunks(removeChunksParams);
await Thumbnail.deleteOne({ _id: file.metadata.thumbnailID });
}
const removeChunksParams = createGenericParams({
filePath: file.metadata.filePath,
Key: file.metadata.s3ID,
});
await storageActions.removeChunks(removeChunksParams);
await File.deleteOne({ _id: file._id });
};
deleteFolder = async (userID: string, folderID: string) => {
const folder = await folderDB.getFolderInfo(folderID, userID);
if (!folder) throw new NotFoundError("Delete Folder Not Found Error");
const parentList = [...folder.parentList, folder._id];
await Folder.deleteMany({
owner: userID,
parentList: { $all: parentList },
});
await Folder.deleteMany({ owner: userID, _id: folderID });
const fileList = await fileDB.getFileListByIncludedParent(
userID,
parentList.toString()
);
if (!fileList) throw new NotFoundError("Delete File List Not Found");
for (let i = 0; i < fileList.length; i++) {
const currentFile = fileList[i];
try {
if (currentFile.metadata.thumbnailID) {
const thumbnail = (await Thumbnail.findById(
currentFile.metadata.thumbnailID
)) as ThumbnailInterface;
const removeChunksParams = createGenericParams({
filePath: thumbnail.path,
Key: thumbnail.s3ID,
});
await storageActions.removeChunks(removeChunksParams);
await Thumbnail.deleteOne({ _id: currentFile.metadata.thumbnailID });
}
const removeChunksParams = createGenericParams({
filePath: currentFile.metadata.filePath,
Key: currentFile.metadata.s3ID,
});
await storageActions.removeChunks(removeChunksParams);
await File.deleteOne({ _id: currentFile._id });
} catch (e) {
console.log(
"Could not delete file",
currentFile.filename,
currentFile._id
);
}
}
};
deleteAll = async (userID: string) => {
await Folder.deleteMany({ owner: userID });
const fileList = await fileDB.getFileListByOwner(userID);
if (!fileList)
throw new NotFoundError("Delete All File List Not Found Error");
for (let i = 0; i < fileList.length; i++) {
const currentFile = fileList[i];
try {
if (currentFile.metadata.thumbnailID) {
const thumbnail = (await Thumbnail.findById(
currentFile.metadata.thumbnailID
)) as ThumbnailInterface;
const removeChunksParams = createGenericParams({
filePath: thumbnail.path,
Key: thumbnail.s3ID,
});
await storageActions.removeChunks(removeChunksParams);
await Thumbnail.deleteOne({ _id: currentFile.metadata.thumbnailID });
}
const removeChunksParams = createGenericParams({
filePath: currentFile.metadata.filePath,
Key: currentFile.metadata.s3ID,
});
await storageActions.removeChunks(removeChunksParams);
await File.deleteOne({ _id: currentFile._id });
} catch (e) {
console.log(
"Could Not Remove File",
currentFile.filename,
currentFile._id
);
}
}
};
}
export default StorageService;