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server.js
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server.js
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import { Mongo } from 'meteor/mongo';
import { fetch } from 'meteor/fetch';
import { WebApp } from 'meteor/webapp';
import { Meteor } from 'meteor/meteor';
import { Random } from 'meteor/random';
import { Cookies } from 'meteor/ostrio:cookies';
import { check, Match } from 'meteor/check';
import WriteStream from './write-stream.js';
import FilesCollectionCore from './core.js';
import { fixJSONParse, fixJSONStringify, helpers } from './lib.js';
import AbortController from 'abort-controller';
import fs from 'fs';
import nodeQs from 'querystring';
import nodePath from 'path';
/**
* @const {Object} bound - Meteor.bindEnvironment (Fiber wrapper)
* @const {Function} noop - No Operation function, placeholder for required callbacks
*/
const bound = Meteor.bindEnvironment(callback => callback());
const noop = function noop () {};
/**
* Create (ensure) index on MongoDB collection, catch and log exception if thrown
* @function createIndex
* @param {Mongo.Collection} collection - Mongo.Collection instance
* @param {object} keys - Field and value pairs where the field is the index key and the value describes the type of index for that field
* @param {object} opts - Set of options that controls the creation of the index
* @returns {void 0}
*/
const createIndex = async (_collection, keys, opts) => {
const collection = _collection.rawCollection();
try {
await collection.createIndex(keys, opts);
} catch (e) {
if (e.code === 85) {
let indexName;
const indexes = await collection.indexes();
for (const index of indexes) {
let allMatch = true;
for (const indexKey of Object.keys(keys)) {
if (typeof index.key[indexKey] === 'undefined') {
allMatch = false;
break;
}
}
for (const indexKey of Object.keys(index.key)) {
if (typeof keys[indexKey] === 'undefined') {
allMatch = false;
break;
}
}
if (allMatch) {
indexName = index.name;
break;
}
}
if (indexName) {
await collection.dropIndex(indexName);
await collection.createIndex(keys, opts);
}
} else {
Meteor._debug(`Can not set ${Object.keys(keys).join(' + ')} index on "${_collection._name}" collection`, { keys, opts, details: e });
}
}
};
/**
* @locus Anywhere
* @class FilesCollection
* @param config {Object} - [Both] Configuration object with next properties:
* @param config.debug {Boolean} - [Both] Turn on/of debugging and extra logging
* @param config.schema {Object} - [Both] Collection Schema
* @param config.public {Boolean} - [Both] Store files in folder accessible for proxy servers, for limits, and more - read docs
* @param config.strict {Boolean} - [Server] Strict mode for partial content, if is `true` server will return `416` response code, when `range` is not specified, otherwise server return `206`
* @param config.protected {Function} - [Server] If `true` - files will be served only to authorized users, if `function()` - you're able to check visitor's permissions in your own way function's context has:
* - `request`
* - `response`
* - `user()`
* - `userId`
* @param config.chunkSize {Number} - [Both] Upload chunk size, default: 524288 bytes (0,5 Mb)
* @param config.permissions {Number} - [Server] Permissions which will be set to uploaded files (octal), like: `511` or `0o755`. Default: 0644
* @param config.parentDirPermissions {Number} - [Server] Permissions which will be set to parent directory of uploaded files (octal), like: `611` or `0o777`. Default: 0755
* @param config.storagePath {String|Function} - [Server] Storage path on file system
* @param config.cacheControl {String} - [Server] Default `Cache-Control` header
* @param config.responseHeaders {Object|Function} - [Server] Custom response headers, if function is passed, must return Object
* @param config.throttle {Number} - [Server] DEPRECATED bps throttle threshold
* @param config.downloadRoute {String} - [Both] Server Route used to retrieve files
* @param config.collection {Mongo.Collection} - [Both] Mongo Collection Instance
* @param config.collectionName {String} - [Both] Collection name
* @param config.namingFunction {Function}- [Both] Function which returns `String`
* @param config.integrityCheck {Boolean} - [Server] Check file's integrity before serving to users
* @param config.onAfterUpload {Function}- [Server] Called right after file is ready on FS. Use to transfer file somewhere else, or do other thing with file directly
* @param config.onAfterRemove {Function} - [Server] Called right after file is removed. Removed objects is passed to callback
* @param config.continueUploadTTL {Number} - [Server] Time in seconds, during upload may be continued, default 3 hours (10800 seconds)
* @param config.onBeforeUpload {Function}- [Both] Function which executes on server after receiving each chunk and on client right before beginning upload. Function context is `File` - so you are able to check for extension, mime-type, size and etc.:
* - return `true` to continue
* - return `false` or `String` to abort upload
* @param config.getUser {Function} - [Server] Replace default way of recognizing user, usefull when you want to auth user based on custom cookie (or other way). arguments {http: {request: {...}, response: {...}}}, need to return {userId: String, user: Function}
* @param config.onInitiateUpload {Function} - [Server] Function which executes on server right before upload is begin and right after `onBeforeUpload` hook. This hook is fully asynchronous.
* @param config.onBeforeRemove {Function} - [Server] Executes before removing file on server, so you can check permissions. Return `true` to allow action and `false` to deny.
* @param config.allowClientCode {Boolean} - [Both] Allow to run `remove` from client
* @param config.downloadCallback {Function} - [Server] Callback triggered each time file is requested, return truthy value to continue download, or falsy to abort
* @param config.interceptRequest {Function} - [Server] Intercept incoming HTTP request, so you can whatever you want, no checks or preprocessing, arguments {http: {request: {...}, response: {...}}, params: {...}}
* @param config.interceptDownload {Function} - [Server] Intercept download request, so you can serve file from third-party resource, arguments {http: {request: {...}, response: {...}}, fileRef: {...}}
* @param config.disableUpload {Boolean} - Disable file upload, useful for server only solutions
* @param config.disableDownload {Boolean} - Disable file download (serving), useful for file management only solutions
* @param config.allowedOrigins {Regex|Boolean} - [Server] Regex of Origins that are allowed CORS access or `false` to disable completely. Defaults to `/^http:\/\/localhost:12[0-9]{3}$/` for allowing Meteor-Cordova builds access
* @param config.allowQueryStringCookies {Boolean} - Allow passing Cookies in a query string (in URL). Primary should be used only in Cordova environment. Note: this option will be used only on Cordova. Default: `false`
* @param config.sanitize {Function} - Override default sanitize function
* @param config._preCollection {Mongo.Collection} - [Server] Mongo preCollection Instance
* @param config._preCollectionName {String} - [Server] preCollection name
* @summary Create new instance of FilesCollection
*/
class FilesCollection extends FilesCollectionCore {
constructor(config) {
super();
let storagePath;
if (config) {
({
_preCollection: this._preCollection,
_preCollectionName: this._preCollectionName,
allowClientCode: this.allowClientCode,
allowedOrigins: this.allowedOrigins,
allowQueryStringCookies: this.allowQueryStringCookies,
cacheControl: this.cacheControl,
chunkSize: this.chunkSize,
collection: this.collection,
collectionName: this.collectionName,
continueUploadTTL: this.continueUploadTTL,
debug: this.debug,
disableDownload: this.disableDownload,
disableUpload: this.disableUpload,
downloadCallback: this.downloadCallback,
downloadRoute: this.downloadRoute,
getUser: this.getUser,
integrityCheck: this.integrityCheck,
interceptDownload: this.interceptDownload,
interceptRequest: this.interceptRequest,
namingFunction: this.namingFunction,
onAfterRemove: this.onAfterRemove,
onAfterUpload: this.onAfterUpload,
onBeforeRemove: this.onBeforeRemove,
onBeforeUpload: this.onBeforeUpload,
onInitiateUpload: this.onInitiateUpload,
parentDirPermissions: this.parentDirPermissions,
permissions: this.permissions,
protected: this.protected,
public: this.public,
responseHeaders: this.responseHeaders,
sanitize: this.sanitize,
schema: this.schema,
storagePath,
strict: this.strict,
} = config);
}
const self = this;
if (!helpers.isBoolean(this.debug)) {
this.debug = false;
}
if (!helpers.isBoolean(this.public)) {
this.public = false;
}
if (!this.protected) {
this.protected = false;
}
if (!this.chunkSize) {
this.chunkSize = 1024 * 512;
}
this.chunkSize = Math.floor(this.chunkSize / 8) * 8;
if (!helpers.isString(this.collectionName) && !this.collection) {
this.collectionName = 'MeteorUploadFiles';
}
if (!this.collection) {
this.collection = new Mongo.Collection(this.collectionName);
} else {
this.collectionName = this.collection._name;
}
this.collection.filesCollection = this;
check(this.collectionName, String);
if (this.public && !this.downloadRoute) {
throw new Meteor.Error(500, `[FilesCollection.${this.collectionName}]: "downloadRoute" must be precisely provided on "public" collections! Note: "downloadRoute" must be equal or be inside of your web/proxy-server (relative) root.`);
}
if (!helpers.isString(this.downloadRoute)) {
this.downloadRoute = '/cdn/storage';
}
this.downloadRoute = this.downloadRoute.replace(/\/$/, '');
if (!helpers.isFunction(this.namingFunction)) {
this.namingFunction = false;
}
if (!helpers.isFunction(this.onBeforeUpload)) {
this.onBeforeUpload = false;
}
if (!helpers.isFunction(this.getUser)) {
this.getUser = false;
}
if (!helpers.isBoolean(this.allowClientCode)) {
this.allowClientCode = true;
}
if (!helpers.isFunction(this.onInitiateUpload)) {
this.onInitiateUpload = false;
}
if (!helpers.isFunction(this.interceptRequest)) {
this.interceptRequest = false;
}
if (!helpers.isFunction(this.interceptDownload)) {
this.interceptDownload = false;
}
if (!helpers.isBoolean(this.strict)) {
this.strict = true;
}
if (!helpers.isBoolean(this.allowQueryStringCookies)) {
this.allowQueryStringCookies = false;
}
if (!helpers.isNumber(this.permissions)) {
this.permissions = parseInt('644', 8);
}
if (!helpers.isNumber(this.parentDirPermissions)) {
this.parentDirPermissions = parseInt('755', 8);
}
if (!helpers.isString(this.cacheControl)) {
this.cacheControl = 'public, max-age=31536000, s-maxage=31536000';
}
if (!helpers.isFunction(this.onAfterUpload)) {
this.onAfterUpload = false;
}
if (!helpers.isBoolean(this.disableUpload)) {
this.disableUpload = false;
}
if (!helpers.isFunction(this.onAfterRemove)) {
this.onAfterRemove = false;
}
if (!helpers.isFunction(this.onBeforeRemove)) {
this.onBeforeRemove = false;
}
if (!helpers.isBoolean(this.integrityCheck)) {
this.integrityCheck = true;
}
if (!helpers.isBoolean(this.disableDownload)) {
this.disableDownload = false;
}
if (this.allowedOrigins === true || this.allowedOrigins === void 0) {
this.allowedOrigins = /^http:\/\/localhost:12[0-9]{3}$/;
}
if (!helpers.isObject(this._currentUploads)) {
this._currentUploads = {};
}
if (!helpers.isFunction(this.downloadCallback)) {
this.downloadCallback = false;
}
if (!helpers.isNumber(this.continueUploadTTL)) {
this.continueUploadTTL = 10800;
}
if (!helpers.isFunction(this.sanitize)) {
this.sanitize = helpers.sanitize;
}
if (!helpers.isFunction(this.responseHeaders)) {
this.responseHeaders = (responseCode, fileRef, versionRef) => {
const headers = {};
switch (responseCode) {
case '206':
headers.Pragma = 'private';
headers['Transfer-Encoding'] = 'chunked';
break;
case '400':
headers['Cache-Control'] = 'no-cache';
break;
case '416':
headers['Content-Range'] = `bytes */${versionRef.size}`;
break;
default:
break;
}
headers.Connection = 'keep-alive';
headers['Content-Type'] = versionRef.type || 'application/octet-stream';
headers['Accept-Ranges'] = 'bytes';
return headers;
};
}
if (this.public && !storagePath) {
throw new Meteor.Error(500, `[FilesCollection.${this.collectionName}] "storagePath" must be set on "public" collections! Note: "storagePath" must be equal on be inside of your web/proxy-server (absolute) root.`);
}
if (!storagePath) {
storagePath = function () {
return `assets${nodePath.sep}app${nodePath.sep}uploads${nodePath.sep}${self.collectionName}`;
};
}
if (helpers.isString(storagePath)) {
this.storagePath = () => storagePath;
} else {
this.storagePath = function () {
let sp = storagePath.apply(self, arguments);
if (!helpers.isString(sp)) {
throw new Meteor.Error(400, `[FilesCollection.${self.collectionName}] "storagePath" function must return a String!`);
}
sp = sp.replace(/\/$/, '');
return nodePath.normalize(sp);
};
}
this._debug('[FilesCollection.storagePath] Set to:', this.storagePath({}));
try {
fs.mkdirSync(this.storagePath({}), {
mode: this.parentDirPermissions,
recursive: true
});
} catch (error) {
if (error) {
throw new Meteor.Error(401, `[FilesCollection.${self.collectionName}] Path "${this.storagePath({})}" is not writable!`, error);
}
}
check(this.strict, Boolean);
check(this.permissions, Number);
check(this.storagePath, Function);
check(this.cacheControl, String);
check(this.onAfterRemove, Match.OneOf(false, Function));
check(this.onAfterUpload, Match.OneOf(false, Function));
check(this.disableUpload, Boolean);
check(this.integrityCheck, Boolean);
check(this.onBeforeRemove, Match.OneOf(false, Function));
check(this.disableDownload, Boolean);
check(this.downloadCallback, Match.OneOf(false, Function));
check(this.interceptRequest, Match.OneOf(false, Function));
check(this.interceptDownload, Match.OneOf(false, Function));
check(this.continueUploadTTL, Number);
check(this.responseHeaders, Match.OneOf(Object, Function));
check(this.allowedOrigins, Match.OneOf(Boolean, RegExp));
check(this.allowQueryStringCookies, Boolean);
this._cookies = new Cookies({
allowQueryStringCookies: this.allowQueryStringCookies,
allowedCordovaOrigins: this.allowedOrigins
});
if (!this.disableUpload) {
if (!helpers.isString(this._preCollectionName) && !this._preCollection) {
this._preCollectionName = `__pre_${this.collectionName}`;
}
if (!this._preCollection) {
this._preCollection = new Mongo.Collection(this._preCollectionName);
} else {
this._preCollectionName = this._preCollection._name;
}
check(this._preCollectionName, String);
createIndex(this._preCollection, { createdAt: 1 }, { expireAfterSeconds: this.continueUploadTTL, background: true });
const _preCollectionCursor = this._preCollection.find({}, {
fields: {
_id: 1,
isFinished: 1
}
});
_preCollectionCursor.observe({
changed(doc) {
if (doc.isFinished) {
self._debug(`[FilesCollection] [_preCollectionCursor.observe] [changed]: ${doc._id}`);
self._preCollection.remove({_id: doc._id}, noop);
}
},
removed(doc) {
// Free memory after upload is done
// Or if upload is unfinished
self._debug(`[FilesCollection] [_preCollectionCursor.observe] [removed]: ${doc._id}`);
if (helpers.isObject(self._currentUploads[doc._id])) {
self._currentUploads[doc._id].stop();
self._currentUploads[doc._id].end();
// We can be unlucky to run into a race condition where another server removed this document before the change of `isFinished` is registered on this server.
// Therefore it's better to double-check with the main collection if the file is referenced there. Issue: https://github.com/veliovgroup/Meteor-Files/issues/672
if (!doc.isFinished && self.collection.find({ _id: doc._id }).count() === 0) {
self._debug(`[FilesCollection] [_preCollectionCursor.observe] [removeUnfinishedUpload]: ${doc._id}`);
self._currentUploads[doc._id].abort();
}
delete self._currentUploads[doc._id];
}
}
});
this._createStream = (_id, path, opts) => {
this._currentUploads[_id] = new WriteStream(path, opts.fileLength, opts, this.permissions);
};
// This little function allows to continue upload
// even after server is restarted (*not on dev-stage*)
this._continueUpload = (_id) => {
if (this._currentUploads[_id] && this._currentUploads[_id].file) {
if (!this._currentUploads[_id].aborted && !this._currentUploads[_id].ended) {
return this._currentUploads[_id].file;
}
this._createStream(_id, this._currentUploads[_id].file.file.path, this._currentUploads[_id].file);
return this._currentUploads[_id].file;
}
const contUpld = this._preCollection.findOne({_id});
if (contUpld) {
this._createStream(_id, contUpld.file.path, contUpld);
return this._currentUploads[_id].file;
}
return false;
};
}
if (!this.schema) {
this.schema = FilesCollectionCore.schema;
}
check(this.debug, Boolean);
check(this.schema, Object);
check(this.public, Boolean);
check(this.getUser, Match.OneOf(false, Function));
check(this.protected, Match.OneOf(Boolean, Function));
check(this.chunkSize, Number);
check(this.downloadRoute, String);
check(this.namingFunction, Match.OneOf(false, Function));
check(this.onBeforeUpload, Match.OneOf(false, Function));
check(this.onInitiateUpload, Match.OneOf(false, Function));
check(this.allowClientCode, Boolean);
if (this.public && this.protected) {
throw new Meteor.Error(500, `[FilesCollection.${this.collectionName}]: Files can not be public and protected at the same time!`);
}
this._checkAccess = (http) => {
if (this.protected) {
let result;
const {user, userId} = this._getUser(http);
if (helpers.isFunction(this.protected)) {
let fileRef;
if (helpers.isObject(http.params) && http.params._id) {
fileRef = this.collection.findOne(http.params._id);
}
result = http ? this.protected.call(Object.assign(http, {user, userId}), (fileRef || null)) : this.protected.call({user, userId}, (fileRef || null));
} else {
result = !!userId;
}
if ((http && (result === true)) || !http) {
return true;
}
const rc = helpers.isNumber(result) ? result : 401;
this._debug('[FilesCollection._checkAccess] WARN: Access denied!');
if (http) {
const text = 'Access denied!';
if (!http.response.headersSent) {
http.response.writeHead(rc, {
'Content-Type': 'text/plain',
'Content-Length': text.length
});
}
if (!http.response.finished) {
http.response.end(text);
}
}
return false;
}
return true;
};
this._methodNames = {
_Abort: `_FilesCollectionAbort_${this.collectionName}`,
_Write: `_FilesCollectionWrite_${this.collectionName}`,
_Start: `_FilesCollectionStart_${this.collectionName}`,
_Remove: `_FilesCollectionRemove_${this.collectionName}`
};
this.on('_handleUpload', this._handleUpload);
this.on('_finishUpload', this._finishUpload);
this._handleUploadSync = Meteor.wrapAsync(this._handleUpload.bind(this));
if (this.disableUpload && this.disableDownload) {
return;
}
WebApp.connectHandlers.use((httpReq, httpResp, next) => {
if (this.allowedOrigins && httpReq._parsedUrl.path.includes(`${this.downloadRoute}/`) && !httpResp.headersSent) {
if (this.allowedOrigins.test(httpReq.headers.origin)) {
httpResp.setHeader('Access-Control-Allow-Credentials', 'true');
httpResp.setHeader('Access-Control-Allow-Origin', httpReq.headers.origin);
}
if (httpReq.method === 'OPTIONS') {
httpResp.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
httpResp.setHeader('Access-Control-Allow-Headers', 'Range, Content-Type, x-mtok, x-start, x-chunkid, x-fileid, x-eof');
httpResp.setHeader('Access-Control-Expose-Headers', 'Accept-Ranges, Content-Encoding, Content-Length, Content-Range');
httpResp.setHeader('Allow', 'GET, POST, OPTIONS');
httpResp.writeHead(200);
httpResp.end();
return;
}
}
if (!this.disableUpload && httpReq._parsedUrl.path.includes(`${this.downloadRoute}/${this.collectionName}/__upload`)) {
if (httpReq.method !== 'POST') {
next();
return;
}
const handleError = (_error) => {
let error = _error;
Meteor._debug('[FilesCollection] [Upload] [HTTP] Exception:', error);
if (!httpResp.headersSent) {
httpResp.writeHead(500);
}
if (!httpResp.finished) {
if (helpers.isObject(error) && helpers.isFunction(error.toString)) {
error = error.toString();
}
if (!helpers.isString(error)) {
error = 'Unexpected error!';
}
httpResp.end(JSON.stringify({ error }));
}
};
let body = '';
const handleData = () => {
try {
let opts;
let result;
let user = this._getUser({request: httpReq, response: httpResp});
if (httpReq.headers['x-start'] !== '1') {
// CHUNK UPLOAD SCENARIO:
opts = {
fileId: this.sanitize(httpReq.headers['x-fileid'], 20, 'a')
};
if (httpReq.headers['x-eof'] === '1') {
opts.eof = true;
} else {
opts.binData = Buffer.from(body, 'base64');
opts.chunkId = parseInt(httpReq.headers['x-chunkid']);
}
const _continueUpload = this._continueUpload(opts.fileId);
if (!_continueUpload) {
throw new Meteor.Error(408, 'Can\'t continue upload, session expired. Start upload again.');
}
({result, opts} = this._prepareUpload(Object.assign(opts, _continueUpload), user.userId, 'HTTP'));
if (opts.eof) {
// FINISH UPLOAD SCENARIO:
this._handleUpload(result, opts, (_error) => {
let error = _error;
if (error) {
if (!httpResp.headersSent) {
httpResp.writeHead(500);
}
if (!httpResp.finished) {
if (helpers.isObject(error) && helpers.isFunction(error.toString)) {
error = error.toString();
}
if (!helpers.isString(error)) {
error = 'Unexpected error!';
}
httpResp.end(JSON.stringify({ error }));
}
}
if (!httpResp.headersSent) {
httpResp.writeHead(200);
}
if (helpers.isObject(result.file) && result.file.meta) {
result.file.meta = fixJSONStringify(result.file.meta);
}
if (!httpResp.finished) {
httpResp.end(JSON.stringify(result));
}
});
return;
}
this.emit('_handleUpload', result, opts, noop);
if (!httpResp.headersSent) {
httpResp.writeHead(204);
}
if (!httpResp.finished) {
httpResp.end();
}
} else {
// START SCENARIO:
try {
opts = JSON.parse(body);
} catch (jsonErr) {
Meteor._debug('Can\'t parse incoming JSON from Client on [.insert() | upload], something went wrong!', jsonErr);
opts = {file: {}};
}
if (!helpers.isObject(opts.file)) {
opts.file = {};
}
if (opts.fileId) {
opts.fileId = this.sanitize(opts.fileId, 20, 'a');
}
this._debug(`[FilesCollection] [File Start HTTP] ${opts.file.name || '[no-name]'} - ${opts.fileId}`);
if (helpers.isObject(opts.file) && opts.file.meta) {
opts.file.meta = fixJSONParse(opts.file.meta);
}
opts.___s = true;
({result} = this._prepareUpload(helpers.clone(opts), user.userId, 'HTTP Start Method'));
if (this.collection.findOne(result._id)) {
throw new Meteor.Error(400, 'Can\'t start upload, data substitution detected!');
}
opts._id = opts.fileId;
opts.createdAt = new Date();
opts.maxLength = opts.fileLength;
this._preCollection.insert(helpers.omit(opts, '___s'));
this._createStream(result._id, result.path, helpers.omit(opts, '___s'));
if (opts.returnMeta) {
if (!httpResp.headersSent) {
httpResp.writeHead(200);
}
if (!httpResp.finished) {
httpResp.end(JSON.stringify({
uploadRoute: `${this.downloadRoute}/${this.collectionName}/__upload`,
file: result
}));
}
} else {
if (!httpResp.headersSent) {
httpResp.writeHead(204);
}
if (!httpResp.finished) {
httpResp.end();
}
}
}
} catch (httpRespErr) {
handleError(httpRespErr);
}
};
httpReq.setTimeout(20000, handleError);
if (typeof httpReq.body === 'object' && Object.keys(httpReq.body).length !== 0) {
body = JSON.stringify(httpReq.body);
handleData();
} else {
httpReq.on('data', (data) => bound(() => {
body += data;
}));
httpReq.on('end', () => bound(() => {
handleData();
}));
}
return;
}
if (!this.disableDownload) {
let uri;
if (!this.public) {
if (httpReq._parsedUrl.path.includes(`${this.downloadRoute}/${this.collectionName}`)) {
uri = httpReq._parsedUrl.path.replace(`${this.downloadRoute}/${this.collectionName}`, '');
if (uri.indexOf('/') === 0) {
uri = uri.substring(1);
}
const uris = uri.split('/');
if (uris.length === 3) {
const params = {
_id: uris[0],
query: httpReq._parsedUrl.query ? nodeQs.parse(httpReq._parsedUrl.query) : {},
name: uris[2].split('?')[0],
version: uris[1]
};
const http = {request: httpReq, response: httpResp, params};
if (this.interceptRequest && helpers.isFunction(this.interceptRequest) && this.interceptRequest(http) === true) {
return;
}
if (this._checkAccess(http)) {
this.download(http, uris[1], this.collection.findOne(uris[0]));
}
} else {
next();
}
} else {
next();
}
} else {
if (httpReq._parsedUrl.path.includes(`${this.downloadRoute}`)) {
uri = httpReq._parsedUrl.path.replace(`${this.downloadRoute}`, '');
if (uri.indexOf('/') === 0) {
uri = uri.substring(1);
}
const uris = uri.split('/');
let _file = uris[uris.length - 1];
if (_file) {
let version;
if (_file.includes('-')) {
version = _file.split('-')[0];
_file = _file.split('-')[1].split('?')[0];
} else {
version = 'original';
_file = _file.split('?')[0];
}
const params = {
query: httpReq._parsedUrl.query ? nodeQs.parse(httpReq._parsedUrl.query) : {},
file: _file,
_id: _file.split('.')[0],
version,
name: _file
};
const http = {request: httpReq, response: httpResp, params};
if (this.interceptRequest && helpers.isFunction(this.interceptRequest) && this.interceptRequest(http) === true) {
return;
}
this.download(http, version, this.collection.findOne(params._id));
} else {
next();
}
} else {
next();
}
}
return;
}
next();
});
if (!this.disableUpload) {
const _methods = {};
// Method used to remove file
// from Client side
_methods[this._methodNames._Remove] = function (selector) {
check(selector, Match.OneOf(String, Object));
self._debug(`[FilesCollection] [Unlink Method] [.remove(${selector})]`);
if (self.allowClientCode) {
if (self.onBeforeRemove && helpers.isFunction(self.onBeforeRemove)) {
const userId = this.userId;
const userFuncs = {
userId: this.userId,
user() {
if (Meteor.users) {
return Meteor.users.findOne(userId);
}
return null;
}
};
if (!self.onBeforeRemove.call(userFuncs, (self.find(selector) || null))) {
throw new Meteor.Error(403, '[FilesCollection] [remove] Not permitted!');
}
}
const cursor = self.find(selector);
if (cursor.count() > 0) {
self.remove(selector);
return true;
}
throw new Meteor.Error(404, 'Cursor is empty, no files is removed');
} else {
throw new Meteor.Error(405, '[FilesCollection] [remove] Running code on a client is not allowed!');
}
};
// Method used to receive "first byte" of upload
// and all file's meta-data, so
// it won't be transferred with every chunk
// Basically it prepares everything
// So user can pause/disconnect and
// continue upload later, during `continueUploadTTL`
_methods[this._methodNames._Start] = function (opts, returnMeta) {
check(opts, {
file: Object,
fileId: String,
FSName: Match.Optional(String),
chunkSize: Number,
fileLength: Number
});
check(returnMeta, Match.Optional(Boolean));
opts.fileId = self.sanitize(opts.fileId, 20, 'a');
self._debug(`[FilesCollection] [File Start Method] ${opts.file.name} - ${opts.fileId}`);
opts.___s = true;
const { result } = self._prepareUpload(helpers.clone(opts), this.userId, 'DDP Start Method');
if (self.collection.findOne(result._id)) {
throw new Meteor.Error(400, 'Can\'t start upload, data substitution detected!');
}
opts._id = opts.fileId;
opts.createdAt = new Date();
opts.maxLength = opts.fileLength;
try {
self._preCollection.insert(helpers.omit(opts, '___s'));
self._createStream(result._id, result.path, helpers.omit(opts, '___s'));
} catch (e) {
self._debug(`[FilesCollection] [File Start Method] [EXCEPTION:] ${opts.file.name} - ${opts.fileId}`, e);
throw new Meteor.Error(500, 'Can\'t start');
}
if (returnMeta) {
return {
uploadRoute: `${self.downloadRoute}/${self.collectionName}/__upload`,
file: result
};
}
return true;
};
// Method used to write file chunks
// it receives very limited amount of meta-data
// This method also responsible for EOF
_methods[this._methodNames._Write] = function (_opts) {
let opts = _opts;
let result;
check(opts, {
eof: Match.Optional(Boolean),
fileId: String,
binData: Match.Optional(String),
chunkId: Match.Optional(Number)
});
opts.fileId = self.sanitize(opts.fileId, 20, 'a');
if (opts.binData) {
opts.binData = Buffer.from(opts.binData, 'base64');
}
const _continueUpload = self._continueUpload(opts.fileId);
if (!_continueUpload) {
throw new Meteor.Error(408, 'Can\'t continue upload, session expired. Start upload again.');
}
this.unblock();
({result, opts} = self._prepareUpload(Object.assign(opts, _continueUpload), this.userId, 'DDP'));
if (opts.eof) {
try {
return self._handleUploadSync(result, opts);
} catch (handleUploadErr) {
self._debug('[FilesCollection] [Write Method] [DDP] Exception:', handleUploadErr);
throw handleUploadErr;
}
} else {
self.emit('_handleUpload', result, opts, noop);
}
return true;
};
// Method used to Abort upload
// - Freeing memory by ending writableStreams
// - Removing temporary record from @_preCollection
// - Removing record from @collection
// - .unlink()ing chunks from FS
_methods[this._methodNames._Abort] = function (_id) {
check(_id, String);
const _continueUpload = self._continueUpload(_id);
self._debug(`[FilesCollection] [Abort Method]: ${_id} - ${(helpers.isObject(_continueUpload.file) ? _continueUpload.file.path : '')}`);
if (self._currentUploads && self._currentUploads[_id]) {
self._currentUploads[_id].stop();
self._currentUploads[_id].abort();
}
if (_continueUpload) {
self._preCollection.remove({_id});
self.remove({_id});
if (helpers.isObject(_continueUpload.file) && _continueUpload.file.path) {
self.unlink({_id, path: _continueUpload.file.path});
}
}
return true;
};
Meteor.methods(_methods);
}
}
/**
* @locus Server
* @memberOf FilesCollection
* @name _prepareUpload
* @summary Internal method. Used to optimize received data and check upload permission
* @returns {Object}
*/
_prepareUpload(opts = {}, userId, transport) {
let ctx;
if (!helpers.isBoolean(opts.eof)) {
opts.eof = false;
}
if (!opts.binData) {
opts.binData = 'EOF';
}
if (!helpers.isNumber(opts.chunkId)) {
opts.chunkId = -1;
}
if (!helpers.isString(opts.FSName)) {
opts.FSName = opts.fileId;
}
this._debug(`[FilesCollection] [Upload] [${transport}] Got #${opts.chunkId}/${opts.fileLength} chunks, dst: ${opts.file.name || opts.file.fileName}`);
const fileName = this._getFileName(opts.file);
const {extension, extensionWithDot} = this._getExt(fileName);
if (!helpers.isObject(opts.file.meta)) {
opts.file.meta = {};
}
let result = opts.file;
result.name = fileName;
result.meta = opts.file.meta;
result.extension = extension;
result.ext = extension;
result._id = opts.fileId;
result.userId = userId || null;
opts.FSName = this.sanitize(opts.FSName);
if (this.namingFunction) {
opts.FSName = this.namingFunction(opts);
}