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Fix:Overdrive chapter parser crash server on invalid meta data #880

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advplyr 2022-08-01 18:28:56 -05:00
parent fddf850a41
commit 95ac74d748
2 changed files with 23 additions and 9 deletions
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9
server/objects/mediaTypes/Book.js
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@ -402,9 +402,12 @@ class Book {
var includedAudioFiles = this.audioFiles.filter(af => !af.exclude)
// If overdrive media markers are present and preferred, use those instead
if (preferOverdriveMediaMarker && overdriveMediaMarkersExist(includedAudioFiles)) {
Logger.info('[Book] Overdrive Media Markers and preference found! Using these for chapter definitions')
return this.chapters = parseOverdriveMediaMarkersAsChapters(includedAudioFiles)
if (preferOverdriveMediaMarker) {
var overdriveChapters = parseOverdriveMediaMarkersAsChapters(includedAudioFiles)
if (overdriveChapters) {
Logger.info('[Book] Overdrive Media Markers and preference found! Using these for chapter definitions')
return this.chapters = overdriveChapters
}
}
if (includedAudioFiles.length === 1) {

23
server/utils/parsers/parseOverdriveMediaMarkers.js
View File

@ -3,7 +3,7 @@ const Logger = require('../../Logger')
// given a list of audio files, extract all of the Overdrive Media Markers metaTags, and return an array of them as XML
function extractOverdriveMediaMarkers(includedAudioFiles) {
Logger.debug('[parseOverdriveMediaMarkers] Extracting overdrive media markers')
var markers = includedAudioFiles.map((af) => af.metaTags.tagOverdriveMediaMarker).filter(notUndefined => notUndefined !== undefined).filter(elem => { return elem !== null }) || []
var markers = includedAudioFiles.map((af) => af.metaTags.tagOverdriveMediaMarker).filter(af => af) || []
return markers
}
@ -29,11 +29,11 @@ function cleanOverdriveMediaMarkers(overdriveMediaMarkers) {
]
*/
var parseString = require('xml2js').parseString; // function to convert xml to JSON
var parseString = require('xml2js').parseString // function to convert xml to JSON
var parsedOverdriveMediaMarkers = []
overdriveMediaMarkers.forEach(function (item, index) {
var parsed_result
overdriveMediaMarkers.forEach((item, index) => {
var parsed_result = null
parseString(item, function (err, result) {
/*
result.Markers.Marker is the result of parsing the XML for the MediaMarker tags for the MP3 file (Part##.mp3)
@ -54,10 +54,14 @@ function cleanOverdriveMediaMarkers(overdriveMediaMarkers) {
*/
// The values for Name and Time in results.Markers.Marker are returned as Arrays from parseString and should be strings
parsed_result = objectValuesArrayToString(result.Markers.Marker)
if (result && result.Markers && result.Markers.Marker) {
parsed_result = objectValuesArrayToString(result.Markers.Marker)
}
})
parsedOverdriveMediaMarkers.push(parsed_result)
if (parsed_result) {
parsedOverdriveMediaMarkers.push(parsed_result)
}
})
return removeExtraChapters(parsedOverdriveMediaMarkers)
@ -114,6 +118,7 @@ function generateParsedChapters(includedAudioFiles, cleanedOverdriveMediaMarkers
// cleanedOverdriveMediaMarkers is an array of array of objects, where the inner array matches to the included audio files tracks
// this allows us to leverage the individual track durations when calculating the start times of chapters in tracks after the first (using length)
// TODO: can we guarantee the inner array matches the included audio files?
includedAudioFiles.forEach((track, track_index) => {
cleanedOverdriveMediaMarkers[track_index].forEach((chapter) => {
time = chapter.Time.split(":")
@ -141,7 +146,13 @@ module.exports.parseOverdriveMediaMarkersAsChapters = (includedAudioFiles) => {
Logger.info('[parseOverdriveMediaMarkers] Parsing of Overdrive Media Markers started')
var overdriveMediaMarkers = extractOverdriveMediaMarkers(includedAudioFiles)
if (!overdriveMediaMarkers.length) return null
var cleanedOverdriveMediaMarkers = cleanOverdriveMediaMarkers(overdriveMediaMarkers)
// TODO: generateParsedChapters requires overdrive media markers and included audio files length to be the same
// so if not equal then we must exit
if (cleanedOverdriveMediaMarkers.length !== includedAudioFiles.length) return null
var parsedChapters = generateParsedChapters(includedAudioFiles, cleanedOverdriveMediaMarkers)
return parsedChapters