DRM-Request-Capture-Extensions/Jio Capture/background.js

const tabIDs = {};
const textDecoder = new TextDecoder();

function requestToClipboard(tabId) {
	const lic_headers = tabIDs[tabId].license_request[0]?.license_headers;
	const lic_url = tabIDs[tabId].license_url;
	const lic_data_json = tabIDs[tabId].license_data;
	const video_link = tabIDs[tabId].video_metadata_url;
	if (!lic_headers)
		return;

	// Fetching the user's ip for setting the header X-Forwarded-For.
	// This might help to bypass regional restrictions when performing the license request in some cases.

	const ip_retrieve_link = "https://ipinfo.io/ip";

	var get_ip = new XMLHttpRequest();
	get_ip.open('GET', ip_retrieve_link, true);
	get_ip.onload = function () {
		var ip_resposnse = this.responseText;
		console.log(ip_resposnse);
		
		var i = 0;
		let curl_license_data = "curl ";
		curl_license_data += `'${lic_url}' \\`;
		for (; i < lic_headers.length; ++i)
			curl_license_data += `\n  -H '${lic_headers[i].name.toLowerCase()}: ${lic_headers[i].value}' \\`;
		curl_license_data += `\n  -H 'x-forwarded-for: ${ip_resposnse}' \\`;
		curl_license_data += "\n  --data-raw ";
		
		if (lic_data_json.includes("u0008")) {
			curl_license_data += `${lic_data_json} \\`;
		} else {
			curl_license_data += `'${lic_data_json}' \\`; /* It is not the same as above line. Note the additional ' symbol at the start and end! */
		}
		
		curl_license_data += "\n  --compressed";
		
		// Generating the curl license text link for https://t.me/drm_downloader_robot
		const jio_gen_link = "https://drm-bot.herokuapp.com/jio.php";
		var data = new FormData();
		data.append('playlist', curl_license_data);
		data.append('api', 'api');

		var gen_link = new XMLHttpRequest();
		gen_link.open('POST', jio_gen_link, true);
		gen_link.onload = function () {
			var gen_link_resposnse = this.responseText;
			let json_resp = JSON.parse(gen_link_resposnse);
			console.log(json_resp);
			let generated_license_link = json_resp.data;
			
			const final = `${video_link}*${generated_license_link}`;
			console.log(final);

			const copyText = document.createElement("textarea");
			copyText.style.position = "absolute";
			copyText.style.left = "-5454px";
			copyText.style.top = "-5454px";
			copyText.style.opacity = 0;
			document.body.appendChild(copyText);
			copyText.value = final;
			copyText.select();
			document.execCommand("copy");
			document.body.removeChild(copyText);

			chrome.browserAction.setBadgeBackgroundColor({color: "#FF0000", tabId: tabId});
			chrome.browserAction.setBadgeText({text: "📋", tabId: tabId});
			console.log("The jio link and the generated link of widevine license curl data has been copied to your clipboard successfully!\n\nNow go to https://t.me/drm_downloader_robot and paste it and send it to the bot.\n\nIf you need to play this video on the site please remember to disable this extension and reload the page.");
			tabIDs[tabId].timeout_id = setTimeout(() => {chrome.browserAction.setBadgeText({text: "", tabId: tabId});}, 20000);

		}
		gen_link.send(data);
	}
	get_ip.send();
}
				
function getLicenseRequestData(details) {
	tabIDs[details.tabId] = tabIDs[details.tabId] || {};
	if (details.url.includes("playbackrights") && details.method == "POST") {
		console.log(details.url);
		tabIDs[details.tabId].video_metadata_url = details.url;
	} else if (details.requestBody && details.requestBody.raw && details.method == "POST") {
        for (var j = 0; j < details.requestBody.raw.length; ++j) {
            try {
				const decodedString = textDecoder.decode(details.requestBody.raw[j].bytes);
				const encodedString = btoa(unescape(encodeURIComponent(decodedString)));
				
				// If the license request does not uses json payloads the data has been sent in raw format. 
				// But the base64 encoded format of it will have the characters "CAES".
				if (encodedString.includes("CAES")) {
					tabIDs[details.tabId] = {license_data: `$'\\u0008\\u0004'`, license_request: [], license_url: details.url, req_id: details.requestId, video_metadata_url: tabIDs[details.tabId].video_metadata_url ?? ""};
					
				// If the license request uses json payloads the charcters "CAES" will be there in almost all cases.
				} else if (decodedString.includes("CAES") || details.url.includes("license") && decodedString.includes("token") && decodedString.length > 4000 || decodedString.includes("8, 1, 18")) {
					tabIDs[details.tabId] = {license_data: decodedString, license_request: [], license_url: details.url, req_id: details.requestId, video_metadata_url: tabIDs[details.tabId].video_metadata_url ?? ""};
				} else {
					return;
				}
            } catch (e) {
                console.error(e);
            }
        }
    }
}
chrome.webRequest.onBeforeRequest.addListener(
    getLicenseRequestData,
    { urls: ["https://prod.media.jio.com/apis/common/v3/playbackrights/*", "https://prod.media.jio.com/proxy*"], types: ["xmlhttprequest"] },
	["requestBody"]
);

function getLicenseRequestHeaders(details) {
    if (details.method == "POST" && tabIDs[details.tabId] && tabIDs[details.tabId].license_url === details.url && tabIDs[details.tabId].req_id === details.requestId) {
		console.log(details.url);
        tabIDs[details.tabId].license_request.push({license_headers: details.requestHeaders});
		console.log(tabIDs)
        requestToClipboard(details.tabId);
	}
}
chrome.webRequest.onBeforeSendHeaders.addListener(
    getLicenseRequestHeaders,
    { urls: ["https://prod.media.jio.com/proxy*"], types: ["xmlhttprequest"] },
    ["requestHeaders"]
);