784 lines
20 KiB
JavaScript
784 lines
20 KiB
JavaScript
/* jslint node: true */
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'use strict';
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// ENiGMA½
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const Config = require('./config.js').config;
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const Errors = require('./enig_error.js').Errors;
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const sortAreasOrConfs = require('./conf_area_util.js').sortAreasOrConfs;
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const FileEntry = require('./file_entry.js');
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const FileDb = require('./database.js').dbs.file;
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const ArchiveUtil = require('./archive_util.js');
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const CRC32 = require('./crc.js').CRC32;
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const Log = require('./logger.js').log;
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const resolveMimeType = require('./mime_util.js').resolveMimeType;
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const stringFormat = require('./string_format.js');
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const wordWrapText = require('./word_wrap.js').wordWrapText;
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// deps
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const _ = require('lodash');
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const async = require('async');
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const fs = require('fs');
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const crypto = require('crypto');
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const paths = require('path');
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const temptmp = require('temptmp').createTrackedSession('file_area');
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const iconv = require('iconv-lite');
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const exec = require('child_process').exec;
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const moment = require('moment');
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exports.isInternalArea = isInternalArea;
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exports.getAvailableFileAreas = getAvailableFileAreas;
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exports.getSortedAvailableFileAreas = getSortedAvailableFileAreas;
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exports.isValidStorageTag = isValidStorageTag;
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exports.getAreaStorageDirectoryByTag = getAreaStorageDirectoryByTag;
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exports.getAreaDefaultStorageDirectory = getAreaDefaultStorageDirectory;
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exports.getAreaStorageLocations = getAreaStorageLocations;
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exports.getDefaultFileAreaTag = getDefaultFileAreaTag;
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exports.getFileAreaByTag = getFileAreaByTag;
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exports.getFileEntryPath = getFileEntryPath;
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exports.changeFileAreaWithOptions = changeFileAreaWithOptions;
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exports.scanFile = scanFile;
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exports.scanFileAreaForChanges = scanFileAreaForChanges;
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exports.getDescFromFileName = getDescFromFileName;
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const WellKnownAreaTags = exports.WellKnownAreaTags = {
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Invalid : '',
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MessageAreaAttach : 'system_message_attachment',
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};
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function isInternalArea(areaTag) {
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return areaTag === WellKnownAreaTags.MessageAreaAttach;
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}
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function getAvailableFileAreas(client, options) {
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options = options || { };
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// perform ACS check per conf & omit internal if desired
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const allAreas = _.map(Config.fileBase.areas, (areaInfo, areaTag) => Object.assign(areaInfo, { areaTag : areaTag } ));
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return _.omitBy(allAreas, areaInfo => {
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if(!options.includeSystemInternal && isInternalArea(areaInfo.areaTag)) {
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return true;
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}
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if(options.writeAcs && !client.acs.hasFileAreaWrite(areaInfo)) {
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return true; // omit
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}
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return !client.acs.hasFileAreaRead(areaInfo);
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});
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}
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function getSortedAvailableFileAreas(client, options) {
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const areas = _.map(getAvailableFileAreas(client, options), v => v);
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sortAreasOrConfs(areas);
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return areas;
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}
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function getDefaultFileAreaTag(client, disableAcsCheck) {
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let defaultArea = _.findKey(Config.fileBase, o => o.default);
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if(defaultArea) {
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const area = Config.fileBase.areas[defaultArea];
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if(true === disableAcsCheck || client.acs.hasFileAreaRead(area)) {
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return defaultArea;
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}
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}
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// just use anything we can
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defaultArea = _.findKey(Config.fileBase.areas, (area, areaTag) => {
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return WellKnownAreaTags.MessageAreaAttach !== areaTag && (true === disableAcsCheck || client.acs.hasFileAreaRead(area));
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});
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return defaultArea;
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}
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function getFileAreaByTag(areaTag) {
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const areaInfo = Config.fileBase.areas[areaTag];
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if(areaInfo) {
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areaInfo.areaTag = areaTag; // convienence!
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areaInfo.storage = getAreaStorageLocations(areaInfo);
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return areaInfo;
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}
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}
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function changeFileAreaWithOptions(client, areaTag, options, cb) {
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async.waterfall(
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[
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function getArea(callback) {
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const area = getFileAreaByTag(areaTag);
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return callback(area ? null : Errors.Invalid('Invalid file areaTag'), area);
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},
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function validateAccess(area, callback) {
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if(!client.acs.hasFileAreaRead(area)) {
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return callback(Errors.AccessDenied('No access to this area'));
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}
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},
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function changeArea(area, callback) {
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if(true === options.persist) {
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client.user.persistProperty('file_area_tag', areaTag, err => {
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return callback(err, area);
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});
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} else {
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client.user.properties['file_area_tag'] = areaTag;
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return callback(null, area);
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}
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}
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],
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(err, area) => {
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if(!err) {
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client.log.info( { areaTag : areaTag, area : area }, 'Current file area changed');
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} else {
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client.log.warn( { areaTag : areaTag, area : area, error : err.message }, 'Could not change file area');
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}
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return cb(err);
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}
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);
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}
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function isValidStorageTag(storageTag) {
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return storageTag in Config.fileBase.storageTags;
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}
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function getAreaStorageDirectoryByTag(storageTag) {
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const storageLocation = (storageTag && Config.fileBase.storageTags[storageTag]);
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return paths.resolve(Config.fileBase.areaStoragePrefix, storageLocation || '');
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}
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function getAreaDefaultStorageDirectory(areaInfo) {
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return getAreaStorageDirectoryByTag(areaInfo.storageTags[0]);
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}
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function getAreaStorageLocations(areaInfo) {
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const storageTags = Array.isArray(areaInfo.storageTags) ?
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areaInfo.storageTags :
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[ areaInfo.storageTags || '' ];
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const avail = Config.fileBase.storageTags;
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return _.compact(storageTags.map(storageTag => {
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if(avail[storageTag]) {
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return {
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storageTag : storageTag,
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dir : getAreaStorageDirectoryByTag(storageTag),
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};
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}
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}));
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}
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function getFileEntryPath(fileEntry) {
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const areaInfo = getFileAreaByTag(fileEntry.areaTag);
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if(areaInfo) {
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return paths.join(areaInfo.storageDirectory, fileEntry.fileName);
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}
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}
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function getExistingFileEntriesBySha256(sha256, cb) {
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const entries = [];
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FileDb.each(
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`SELECT file_id, area_tag
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FROM file
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WHERE file_sha256=?;`,
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[ sha256 ],
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(err, fileRow) => {
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if(fileRow) {
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entries.push({
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fileId : fileRow.file_id,
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areaTag : fileRow.area_tag,
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});
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}
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},
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err => {
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return cb(err, entries);
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}
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);
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}
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// :TODO: This is bascially sliceAtEOF() from art.js .... DRY!
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function sliceAtSauceMarker(data) {
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let eof = data.length;
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const stopPos = Math.max(data.length - (256), 0); // 256 = 2 * sizeof(SAUCE)
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for(let i = eof - 1; i > stopPos; i--) {
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if(0x1a === data[i]) {
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eof = i;
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break;
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}
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}
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return data.slice(0, eof);
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}
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function attemptSetEstimatedReleaseDate(fileEntry) {
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// :TODO: yearEstPatterns RegExp's should be cached - we can do this @ Config (re)load time
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const patterns = Config.fileBase.yearEstPatterns.map( p => new RegExp(p, 'gmi'));
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function getMatch(input) {
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if(input) {
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let m;
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for(let i = 0; i < patterns.length; ++i) {
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m = patterns[i].exec(input);
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if(m) {
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return m;
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}
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}
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}
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}
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//
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// We attempt detection in short -> long order
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//
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// Throw out anything that is current_year + 2 (we give some leway)
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// with the assumption that must be wrong.
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//
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const maxYear = moment().add(2, 'year').year();
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const match = getMatch(fileEntry.desc) || getMatch(fileEntry.descLong);
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if(match && match[1]) {
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let year;
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if(2 === match[1].length) {
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year = parseInt(match[1]);
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if(year) {
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if(year > 70) {
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year += 1900;
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} else {
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year += 2000;
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}
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}
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} else {
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year = parseInt(match[1]);
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}
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if(year && year <= maxYear) {
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fileEntry.meta.est_release_year = year;
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}
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}
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}
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// a simple log proxy for when we call from oputil.js
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function logDebug(obj, msg) {
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if(Log) {
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Log.debug(obj, msg);
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}
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}
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function populateFileEntryWithArchive(fileEntry, filePath, stepInfo, iterator, cb) {
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const archiveUtil = ArchiveUtil.getInstance();
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const archiveType = fileEntry.meta.archive_type; // we set this previous to populateFileEntryWithArchive()
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async.waterfall(
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[
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function getArchiveFileList(callback) {
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stepInfo.step = 'archive_list_start';
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iterator(err => {
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if(err) {
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return callback(err);
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}
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archiveUtil.listEntries(filePath, archiveType, (err, entries) => {
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if(err) {
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stepInfo.step = 'archive_list_failed';
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} else {
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stepInfo.step = 'archive_list_finish';
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stepInfo.archiveEntries = entries || [];
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}
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iterator(iterErr => {
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return callback( iterErr, entries || [] ); // ignore original |err| here
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});
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});
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});
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},
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function processDescFilesStart(entries, callback) {
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stepInfo.step = 'desc_files_start';
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iterator(err => {
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return callback(err, entries);
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});
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},
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function extractDescFiles(entries, callback) {
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// :TODO: would be nice if these RegExp's were cached
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// :TODO: this is long winded...
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const extractList = [];
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const shortDescFile = entries.find( e => {
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return Config.fileBase.fileNamePatterns.desc.find( pat => new RegExp(pat, 'i').test(e.fileName) );
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});
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if(shortDescFile) {
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extractList.push(shortDescFile.fileName);
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}
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const longDescFile = entries.find( e => {
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return Config.fileBase.fileNamePatterns.descLong.find( pat => new RegExp(pat, 'i').test(e.fileName) );
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});
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if(longDescFile) {
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extractList.push(longDescFile.fileName);
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}
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if(0 === extractList.length) {
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return callback(null, [] );
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}
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temptmp.mkdir( { prefix : 'enigextract-' }, (err, tempDir) => {
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if(err) {
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return callback(err);
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}
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archiveUtil.extractTo(filePath, tempDir, archiveType, extractList, err => {
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if(err) {
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return callback(err);
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}
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const descFiles = {
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desc : shortDescFile ? paths.join(tempDir, shortDescFile.fileName) : null,
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descLong : longDescFile ? paths.join(tempDir, longDescFile.fileName) : null,
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};
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return callback(null, descFiles);
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});
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});
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},
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function readDescFiles(descFiles, callback) {
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async.each(Object.keys(descFiles), (descType, next) => {
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const path = descFiles[descType];
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if(!path) {
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return next(null);
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}
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fs.stat(path, (err, stats) => {
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if(err) {
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return next(null);
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}
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// skip entries that are too large
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const maxFileSizeKey = `max${_.upperFirst(descType)}FileByteSize`;
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if(Config.fileBase[maxFileSizeKey] && stats.size > Config.fileBase[maxFileSizeKey]) {
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logDebug( { byteSize : stats.size, maxByteSize : Config.fileBase[maxFileSizeKey] }, `Skipping "${descType}"; Too large` );
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return next(null);
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}
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fs.readFile(path, (err, data) => {
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if(err || !data) {
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return next(null);
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}
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//
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// Assume FILE_ID.DIZ, NFO files, etc. are CP437.
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//
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// :TODO: This isn't really always the case - how to handle this? We could do a quick detection...
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fileEntry[descType] = iconv.decode(sliceAtSauceMarker(data, 0x1a), 'cp437');
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return next(null);
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});
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});
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}, () => {
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// cleanup but don't wait
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temptmp.cleanup( paths => {
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// note: don't use client logger here - may not be avail
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logDebug( { paths : paths, sessionId : temptmp.sessionId }, 'Cleaned up temporary files' );
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});
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return callback(null);
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});
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},
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function attemptReleaseYearEstimation(callback) {
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attemptSetEstimatedReleaseDate(fileEntry);
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return callback(null);
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},
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function processDescFilesFinish(callback) {
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stepInfo.step = 'desc_files_finish';
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return iterator(callback);
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},
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],
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err => {
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return cb(err);
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}
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);
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}
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function getInfoExtractUtilForDesc(mimeType, descType) {
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let util = _.get(Config, [ 'fileTypes', mimeType, `${descType}DescUtil` ]);
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if(!_.isString(util)) {
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return;
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}
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util = _.get(Config, [ 'infoExtractUtils', util ]);
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if(!util || !_.isString(util.cmd)) {
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return;
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}
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return util;
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}
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function populateFileEntryNonArchive(fileEntry, filePath, stepInfo, iterator, cb) {
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async.series(
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[
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function processDescFilesStart(callback) {
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stepInfo.step = 'desc_files_start';
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return iterator(callback);
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},
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function getDescriptions(callback) {
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const mimeType = resolveMimeType(filePath);
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if(!mimeType) {
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return callback(null);
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}
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async.eachSeries( [ 'short', 'long' ], (descType, nextDesc) => {
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const util = getInfoExtractUtilForDesc(mimeType, descType);
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if(!util) {
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return nextDesc(null);
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}
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const args = (util.args || [ '{filePath} '] ).map( arg => stringFormat(arg, { filePath : filePath } ) );
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exec(`${util.cmd} ${args.join(' ')}`, (err, stdout) => {
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if(err) {
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logDebug(
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{ error : err.message, cmd : util.cmd, args : args },
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`${_.upperFirst(descType)} description command failed`
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);
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} else {
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stdout = (stdout || '').trim();
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if(stdout.length > 0) {
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const key = 'short' === descType ? 'desc' : 'descLong';
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if('desc' === key) {
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//
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// Word wrap short descriptions to FILE_ID.DIZ spec
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//
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// "...no more than 45 characters long"
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//
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// See http://www.textfiles.com/computers/fileid.txt
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//
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stdout = (wordWrapText( stdout, { width : 45 } ).wrapped || []).join('\n');
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}
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fileEntry[key] = stdout;
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}
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}
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return nextDesc(null);
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});
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}, () => {
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return callback(null);
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});
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},
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function processDescFilesFinish(callback) {
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stepInfo.step = 'desc_files_finish';
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return iterator(callback);
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},
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],
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err => {
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return cb(err);
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}
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);
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}
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function addNewFileEntry(fileEntry, filePath, cb) {
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// :TODO: Use detectTypeWithBuf() once avail - we *just* read some file data
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async.series(
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[
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function addNewDbRecord(callback) {
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return fileEntry.persist(callback);
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}
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],
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err => {
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return cb(err);
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}
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);
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}
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function updateFileEntry(fileEntry, filePath, cb) {
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}
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const HASH_NAMES = [ 'sha1', 'sha256', 'md5', 'crc32' ];
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function scanFile(filePath, options, iterator, cb) {
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if(3 === arguments.length && _.isFunction(iterator)) {
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cb = iterator;
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iterator = null;
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} else if(2 === arguments.length && _.isFunction(options)) {
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cb = options;
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iterator = null;
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options = {};
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}
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const fileEntry = new FileEntry({
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areaTag : options.areaTag,
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meta : options.meta,
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hashTags : options.hashTags, // Set() or Array
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fileName : paths.basename(filePath),
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storageTag : options.storageTag,
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fileSha256 : options.sha256, // caller may know this already
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});
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const stepInfo = {
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filePath : filePath,
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fileName : paths.basename(filePath),
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};
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function callIter(next) {
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if(iterator) {
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return iterator(stepInfo, next);
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} else {
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return next(null);
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}
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}
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function readErrorCallIter(origError, next) {
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stepInfo.step = 'read_error';
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stepInfo.error = origError.message;
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callIter( () => {
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return next(origError);
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});
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}
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let lastCalcHashPercent;
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// don't re-calc hashes for any we already have in |options|
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const hashesToCalc = HASH_NAMES.filter(hn => {
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if('sha256' === hn && fileEntry.fileSha256) {
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return false;
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}
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if(`file_${hn}` in fileEntry.meta) {
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return false;
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}
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|
|
return true;
|
|
});
|
|
|
|
async.waterfall(
|
|
[
|
|
function startScan(callback) {
|
|
fs.stat(filePath, (err, stats) => {
|
|
if(err) {
|
|
return readErrorCallIter(err, callback);
|
|
}
|
|
|
|
stepInfo.step = 'start';
|
|
stepInfo.byteSize = fileEntry.meta.byte_size = stats.size;
|
|
|
|
return callIter(callback);
|
|
});
|
|
},
|
|
function processPhysicalFileGeneric(callback) {
|
|
stepInfo.bytesProcessed = 0;
|
|
|
|
const hashes = {};
|
|
hashesToCalc.forEach(hashName => {
|
|
if('crc32' === hashName) {
|
|
hashes.crc32 = new CRC32;
|
|
} else {
|
|
hashes[hashName] = crypto.createHash(hashName);
|
|
}
|
|
});
|
|
|
|
const stream = fs.createReadStream(filePath);
|
|
|
|
function updateHashes(data) {
|
|
async.each(hashesToCalc, (hashName, nextHash) => {
|
|
hashes[hashName].update(data);
|
|
return nextHash(null);
|
|
}, () => {
|
|
return stream.resume();
|
|
});
|
|
}
|
|
|
|
stream.on('data', data => {
|
|
stream.pause(); // until iterator compeltes
|
|
|
|
stepInfo.bytesProcessed += data.length;
|
|
stepInfo.calcHashPercent = Math.round(((stepInfo.bytesProcessed / stepInfo.byteSize) * 100));
|
|
|
|
//
|
|
// Only send 'hash_update' step update if we have a noticable percentage change in progress
|
|
//
|
|
if(stepInfo.calcHashPercent === lastCalcHashPercent) {
|
|
updateHashes(data);
|
|
} else {
|
|
lastCalcHashPercent = stepInfo.calcHashPercent;
|
|
stepInfo.step = 'hash_update';
|
|
|
|
callIter(err => {
|
|
if(err) {
|
|
stream.destroy(); // cancel read
|
|
return callback(err);
|
|
}
|
|
|
|
updateHashes(data);
|
|
});
|
|
}
|
|
});
|
|
|
|
stream.on('end', () => {
|
|
fileEntry.meta.byte_size = stepInfo.bytesProcessed;
|
|
|
|
async.each(hashesToCalc, (hashName, nextHash) => {
|
|
if('sha256' === hashName) {
|
|
stepInfo.sha256 = fileEntry.fileSha256 = hashes.sha256.digest('hex');
|
|
} else if('sha1' === hashName || 'md5' === hashName) {
|
|
stepInfo[hashName] = fileEntry.meta[`file_${hashName}`] = hashes[hashName].digest('hex');
|
|
} else if('crc32' === hashName) {
|
|
stepInfo.crc32 = fileEntry.meta.file_crc32 = hashes.crc32.finalize().toString(16);
|
|
}
|
|
|
|
return nextHash(null);
|
|
}, () => {
|
|
stepInfo.step = 'hash_finish';
|
|
return callIter(callback);
|
|
});
|
|
});
|
|
|
|
stream.on('error', err => {
|
|
return readErrorCallIter(err, callback);
|
|
});
|
|
},
|
|
function processPhysicalFileByType(callback) {
|
|
const archiveUtil = ArchiveUtil.getInstance();
|
|
|
|
archiveUtil.detectType(filePath, (err, archiveType) => {
|
|
if(archiveType) {
|
|
// save this off
|
|
fileEntry.meta.archive_type = archiveType;
|
|
|
|
populateFileEntryWithArchive(fileEntry, filePath, stepInfo, callIter, err => {
|
|
if(err) {
|
|
populateFileEntryNonArchive(fileEntry, filePath, stepInfo, callIter, err => {
|
|
// :TODO: log err
|
|
return callback(null); // ignore err
|
|
});
|
|
} else {
|
|
return callback(null);
|
|
}
|
|
});
|
|
} else {
|
|
populateFileEntryNonArchive(fileEntry, filePath, stepInfo, callIter, err => {
|
|
// :TODO: log err
|
|
return callback(null); // ignore err
|
|
});
|
|
}
|
|
});
|
|
},
|
|
function fetchExistingEntry(callback) {
|
|
getExistingFileEntriesBySha256(fileEntry.fileSha256, (err, dupeEntries) => {
|
|
return callback(err, dupeEntries);
|
|
});
|
|
},
|
|
function finished(dupeEntries, callback) {
|
|
stepInfo.step = 'finished';
|
|
callIter( () => {
|
|
return callback(null, dupeEntries);
|
|
});
|
|
}
|
|
],
|
|
(err, dupeEntries) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
|
|
return cb(null, fileEntry, dupeEntries);
|
|
}
|
|
);
|
|
}
|
|
|
|
function scanFileAreaForChanges(areaInfo, options, iterator, cb) {
|
|
if(3 === arguments.length && _.isFunction(iterator)) {
|
|
cb = iterator;
|
|
iterator = null;
|
|
} else if(2 === arguments.length && _.isFunction(options)) {
|
|
cb = options;
|
|
iterator = null;
|
|
options = {};
|
|
}
|
|
|
|
const storageLocations = getAreaStorageLocations(areaInfo);
|
|
|
|
async.eachSeries(storageLocations, (storageLoc, nextLocation) => {
|
|
async.series(
|
|
[
|
|
function scanPhysFiles(callback) {
|
|
const physDir = storageLoc.dir;
|
|
|
|
fs.readdir(physDir, (err, files) => {
|
|
if(err) {
|
|
return callback(err);
|
|
}
|
|
|
|
async.eachSeries(files, (fileName, nextFile) => {
|
|
const fullPath = paths.join(physDir, fileName);
|
|
|
|
fs.stat(fullPath, (err, stats) => {
|
|
if(err) {
|
|
// :TODO: Log me!
|
|
return nextFile(null); // always try next file
|
|
}
|
|
|
|
if(!stats.isFile()) {
|
|
return nextFile(null);
|
|
}
|
|
|
|
scanFile(
|
|
fullPath,
|
|
{
|
|
areaTag : areaInfo.areaTag,
|
|
storageTag : storageLoc.storageTag
|
|
},
|
|
iterator,
|
|
(err, fileEntry, dupeEntries) => {
|
|
if(err) {
|
|
// :TODO: Log me!!!
|
|
return nextFile(null); // try next anyway
|
|
}
|
|
|
|
if(dupeEntries.length > 0) {
|
|
// :TODO: Handle duplidates -- what to do here???
|
|
} else {
|
|
if(Array.isArray(options.tags)) {
|
|
options.tags.forEach(tag => {
|
|
fileEntry.hashTags.add(tag);
|
|
});
|
|
}
|
|
addNewFileEntry(fileEntry, fullPath, err => {
|
|
// pass along error; we failed to insert a record in our DB or something else bad
|
|
return nextFile(err);
|
|
});
|
|
}
|
|
}
|
|
);
|
|
});
|
|
}, err => {
|
|
return callback(err);
|
|
});
|
|
});
|
|
},
|
|
function scanDbEntries(callback) {
|
|
// :TODO: Look @ db entries for area that were *not* processed above
|
|
return callback(null);
|
|
}
|
|
],
|
|
err => {
|
|
return nextLocation(err);
|
|
}
|
|
);
|
|
},
|
|
err => {
|
|
return cb(err);
|
|
});
|
|
}
|
|
|
|
function getDescFromFileName(fileName) {
|
|
// :TODO: this method could use some more logic to really be nice.
|
|
const ext = paths.extname(fileName);
|
|
const name = paths.basename(fileName, ext);
|
|
|
|
return _.upperFirst(name.replace(/[\-_.+]/g, ' ').replace(/\s+/g, ' '));
|
|
} |