CyberChef/src/core/operations/ExtractID3.mjs

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2020-04-02 16:43:55 +02:00
/**
* @author n1073645 [n1073645@gmail.com]
* @copyright Crown Copyright 2020
* @license Apache-2.0
*/
import Operation from "../Operation.mjs";
import OperationError from "../errors/OperationError.mjs";
/**
* Extract ID3 operation
*/
class ExtractID3 extends Operation {
/**
* ExtractID3 constructor
*/
constructor() {
super();
this.name = "Extract ID3";
this.module = "Default";
this.description = "";
this.infoURL = "";
this.inputType = "ArrayBuffer";
this.outputType = "string";
this.args = [];
}
/**
* @param {ArrayBuffer} input
* @param {Object[]} args
* @returns {string}
*/
run(input, args) {
// Borrowed from https://github.com/aadsm/jsmediatags
const FRAME_DESCRIPTIONS = {
// v2.2
"BUF": "Recommended buffer size",
"CNT": "Play counter",
"COM": "Comments",
"CRA": "Audio encryption",
"CRM": "Encrypted meta frame",
"ETC": "Event timing codes",
"EQU": "Equalization",
"GEO": "General encapsulated object",
"IPL": "Involved people list",
"LNK": "Linked information",
"MCI": "Music CD Identifier",
"MLL": "MPEG location lookup table",
"PIC": "Attached picture",
"POP": "Popularimeter",
"REV": "Reverb",
"RVA": "Relative volume adjustment",
"SLT": "Synchronized lyric/text",
"STC": "Synced tempo codes",
"TAL": "Album/Movie/Show title",
"TBP": "BPM (Beats Per Minute)",
"TCM": "Composer",
"TCO": "Content type",
"TCR": "Copyright message",
"TDA": "Date",
"TDY": "Playlist delay",
"TEN": "Encoded by",
"TFT": "File type",
"TIM": "Time",
"TKE": "Initial key",
"TLA": "Language(s)",
"TLE": "Length",
"TMT": "Media type",
"TOA": "Original artist(s)/performer(s)",
"TOF": "Original filename",
"TOL": "Original Lyricist(s)/text writer(s)",
"TOR": "Original release year",
"TOT": "Original album/Movie/Show title",
"TP1": "Lead artist(s)/Lead performer(s)/Soloist(s)/Performing group",
"TP2": "Band/Orchestra/Accompaniment",
"TP3": "Conductor/Performer refinement",
"TP4": "Interpreted, remixed, or otherwise modified by",
"TPA": "Part of a set",
"TPB": "Publisher",
"TRC": "ISRC (International Standard Recording Code)",
"TRD": "Recording dates",
"TRK": "Track number/Position in set",
"TSI": "Size",
"TSS": "Software/hardware and settings used for encoding",
"TT1": "Content group description",
"TT2": "Title/Songname/Content description",
"TT3": "Subtitle/Description refinement",
"TXT": "Lyricist/text writer",
"TXX": "User defined text information frame",
"TYE": "Year",
"UFI": "Unique file identifier",
"ULT": "Unsychronized lyric/text transcription",
"WAF": "Official audio file webpage",
"WAR": "Official artist/performer webpage",
"WAS": "Official audio source webpage",
"WCM": "Commercial information",
"WCP": "Copyright/Legal information",
"WPB": "Publishers official webpage",
"WXX": "User defined URL link frame",
// v2.3
"AENC": "Audio encryption",
"APIC": "Attached picture",
"ASPI": "Audio seek point index",
"CHAP": "Chapter",
"CTOC": "Table of contents",
"COMM": "Comments",
"COMR": "Commercial frame",
"ENCR": "Encryption method registration",
"EQU2": "Equalisation (2)",
"EQUA": "Equalization",
"ETCO": "Event timing codes",
"GEOB": "General encapsulated object",
"GRID": "Group identification registration",
"IPLS": "Involved people list",
"LINK": "Linked information",
"MCDI": "Music CD identifier",
"MLLT": "MPEG location lookup table",
"OWNE": "Ownership frame",
"PRIV": "Private frame",
"PCNT": "Play counter",
"POPM": "Popularimeter",
"POSS": "Position synchronisation frame",
"RBUF": "Recommended buffer size",
"RVA2": "Relative volume adjustment (2)",
"RVAD": "Relative volume adjustment",
"RVRB": "Reverb",
"SEEK": "Seek frame",
"SYLT": "Synchronized lyric/text",
"SYTC": "Synchronized tempo codes",
"TALB": "Album/Movie/Show title",
"TBPM": "BPM (beats per minute)",
"TCOM": "Composer",
"TCON": "Content type",
"TCOP": "Copyright message",
"TDAT": "Date",
"TDLY": "Playlist delay",
"TDRC": "Recording time",
"TDRL": "Release time",
"TDTG": "Tagging time",
"TENC": "Encoded by",
"TEXT": "Lyricist/Text writer",
"TFLT": "File type",
"TIME": "Time",
"TIPL": "Involved people list",
"TIT1": "Content group description",
"TIT2": "Title/songname/content description",
"TIT3": "Subtitle/Description refinement",
"TKEY": "Initial key",
"TLAN": "Language(s)",
"TLEN": "Length",
"TMCL": "Musician credits list",
"TMED": "Media type",
"TMOO": "Mood",
"TOAL": "Original album/movie/show title",
"TOFN": "Original filename",
"TOLY": "Original lyricist(s)/text writer(s)",
"TOPE": "Original artist(s)/performer(s)",
"TORY": "Original release year",
"TOWN": "File owner/licensee",
"TPE1": "Lead performer(s)/Soloist(s)",
"TPE2": "Band/orchestra/accompaniment",
"TPE3": "Conductor/performer refinement",
"TPE4": "Interpreted, remixed, or otherwise modified by",
"TPOS": "Part of a set",
"TPRO": "Produced notice",
"TPUB": "Publisher",
"TRCK": "Track number/Position in set",
"TRDA": "Recording dates",
"TRSN": "Internet radio station name",
"TRSO": "Internet radio station owner",
"TSOA": "Album sort order",
"TSOP": "Performer sort order",
"TSOT": "Title sort order",
"TSIZ": "Size",
"TSRC": "ISRC (international standard recording code)",
"TSSE": "Software/Hardware and settings used for encoding",
"TSST": "Set subtitle",
"TYER": "Year",
"TXXX": "User defined text information frame",
"UFID": "Unique file identifier",
"USER": "Terms of use",
"USLT": "Unsychronized lyric/text transcription",
"WCOM": "Commercial information",
"WCOP": "Copyright/Legal information",
"WOAF": "Official audio file webpage",
"WOAR": "Official artist/performer webpage",
"WOAS": "Official audio source webpage",
"WORS": "Official internet radio station homepage",
"WPAY": "Payment",
"WPUB": "Publishers official webpage",
"WXXX": "User defined URL link frame"
};
input = new Uint8Array(input);
let result = "";
/**
* Extracts the ID3 header fields.
*/
function extractHeader() {
if (input.slice(0, 3).toString() !== [0x49, 0x44, 0x33].toString())
throw new OperationError("No valid ID3 header.");
result = "{\n";
result += " Type: \"ID3\",\n";
// Tag version.
result += " Version: \"" + input[3].toString() + "." + input[4].toString() + "\",\n";
// Header flags.
result += " Flags: " + input[5].toString() + ",\n";
input = input.slice(6);
}
/**
* Converts the size fields to a single integer.
*
* @param {number} num
* @returns {string}
*/
function readSize(num) {
let result = 0;
// The sizes are 7 bit numbers stored in 8 bit locations.
for (let i = (num) * 7; i; i -= 7) {
result = (result << i) | input[0];
input = input.slice(1);
}
return result;
}
/**
* Reads frame header based on ID.
*
* @param {string} id
* @returns {number}
*/
function readFrame(id) {
result += " " + id + ": {\n";
result += " ID: \"" + id + "\",\n";
// Size of frame.
const size = readSize(4);
result += " Size: " + size.toString() + ",\n";
result += " Description: \"" + FRAME_DESCRIPTIONS[id] + "\",\n";
input = input.slice(2);
let data = "";
// Read data from frame.
for (let i = 1; i < size; i++)
data += String.fromCharCode(input[i]);
// Move to next Frame
input = input.slice(size);
result += " Data: \"" + data + "\",\n";
result += " },\n";
return size;
}
extractHeader();
const headerTagSize = readSize(4);
result += " Tags: {\n";
let pos = 10;
// While the current element is in the header.
while (pos < headerTagSize) {
// Frame Identifier of frame.
let id = String.fromCharCode(input[0]) + String.fromCharCode(input[1]) + String.fromCharCode(input[2]);
input = input.slice(3);
// If the next character is non-zero it is an identifier.
if (input[0] !== 0) {
id += String.fromCharCode(input[0]);
}
input = input.slice(1);
if (id in FRAME_DESCRIPTIONS) {
pos += 10 + readFrame(id);
// If end of header.
} else if (id === "\x00\x00\x00") {
break;
} else {
throw new OperationError("Unknown Frame Identifier: " + id);
}
}
// Tidy up the output.
result += " },\n";
result += " Size: "+headerTagSize.toString() + ",\n";
result += "}";
return result;
}
}
export default ExtractID3;