soundcloud-key-fetch/index.js

Fetch a SoundCloud API key without owning a SoundCloud app!

exports.fetchKey = async function () {
    return new Promise(async function (resolve, rej) {
        require("https")
            .get("https://soundcloud.com/", (res) => {
                let r = "";
                res.on("data", async (d) => {
                    r += d;
                });

                res.on("end", async () => {
                    const res = r.split('<script crossorigin src="');
                    const urls = [];
                    res.forEach((urlA) => {
                        const urlreg =
                            /^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)$/;
                        let url = urlA.replace('"></script>', "");
                        let res = url.split("\n")[0];
                        if (urlreg.test(res)) urls.push(res);
                    });
                    async function fetchKey() {
                        return new Promise(async function (resolve, rej) {
                            let key;
                            require("https").get(
                                urls[urls.length - 1],
                                async (a) => {
                                    let data = "";
                                    a.on("data", async (d) => {
                                        data += d;
                                    });

                                    a.on("end", () => {
                                        if (data.includes(',client_id:"')) {
                                            const thingA =
                                                data.split(',client_id:"');
                                            key = thingA[1].split('"')[0];
                                            return resolve(key);
                                        }
                                        return resolve("");
                                    });

                                    a.on("error", (err) => rej(err));
                                }
                            );
                        });
                    }
                    const key = await fetchKey();
                    if (key) {
                        resolve(key);
                    } else {
                        rej(
                            new Error(
                                `Unable to fetch a SoundCloud API key! This most likely has happened due to either making too many requests, or the SoundCloud website has changed!`
                            )
                        );
                    }
                });
            })
            .on("error", async (e) => {
                rej(e);
            });
    });
};

exports.testKey = function (key) {
    return new Promise(function (res, rej) {
        if (!key) {
            return rej(new Error(`No SoundCloud API key provided`));
        } else {
            require("https")
                .get(
                    `https://api-v2.soundcloud.com/search?client_id=${key}&q=this%20package%20gave%20me%20neck%20pains&limit=0`,
                    async (result) => {
                        if (
                            result.statusCode === 401 ||
                            result.statusCode === 403
                        )
                            return res(false);
                        if (
                            result.statusCode === 404 ||
                            result.statusCode === 200
                        )
                            return res(true);
                    }
                )
                .on("error", (e) => {
                    return rej(e);
                });
        }
    });
};