Add files via upload

PSSH Capture/background.js

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+const tabIDs = {};
+const textDecoder = new TextDecoder();
+
+function requestToClipboard(tabId) {
+    chrome.tabs.get(tabId, (details) => {
+        const lic_headers = tabIDs[details.id].license_request[0]?.license_headers;
+		const lic_url = tabIDs[details.id].license_url;
+		const lic_data_json = tabIDs[details.id].license_data;
+		const widevine_pssh = tabIDs[details.id].pssh;
+        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 += `'${lic_data_json}' \\`; /* It is not the same as above line. Note the additional ' symbol at the start and end! */
+			}
+			
+			curl_license_data += "\n  --compressed";
+			
+			// Generating the curl license text link for https://t.me/drm_downloader_robot
+			const license_gen_link = "https://drm-bot.herokuapp.com/gen.php";
+			var data = new FormData();
+			data.append('playlist', curl_license_data);
+			data.append('api', 'api');
+
+			var gen_link = new XMLHttpRequest();
+			gen_link.open('POST', license_gen_link, true);
+			gen_link.onload = function () {
+				var gen_link_resposnse = this.responseText;
+				let json_resp = JSON.parse(gen_link_resposnse);
+				console.log(json_resp);
+				let generated_license_link = json_resp.data;
+				
+				const final = `${widevine_pssh}^${generated_license_link}`;
+				console.log(final);
+
+				const copyText = document.createElement("textarea");
+				copyText.style.position = "absolute";
+				copyText.style.left = "-5454px";
+				copyText.style.top = "-5454px";
+				copyText.style.opacity = 0;
+				document.body.appendChild(copyText);
+				copyText.value = final;
+				copyText.select();
+				document.execCommand("copy");
+				document.body.removeChild(copyText);
+
+				chrome.browserAction.setBadgeBackgroundColor({color: "#FF0000", tabId: details.id});
+				chrome.browserAction.setBadgeText({text: "📋", tabId: details.id});
+				alert("The pssh and the generated link of widevine license curl data has been copied to your clipboard successfully!\n\nNow go to https://t.me/drm_downloader_robot and paste it and send it to the bot.");
+
+			}
+			gen_link.send(data);
+		}
+		get_ip.send();
+	});
+}
+				
+function getLicenseRequestData(details) {
+	tabIDs[details.tabId] = tabIDs[details.tabId] || {};
+	if (details.requestBody && details.requestBody.raw && details.method == "POST") {
+        for (var j = 0; j < details.requestBody.raw.length; ++j) {
+            try {
+				const decodedString = textDecoder.decode(details.requestBody.raw[j].bytes);
+				const encodedString = btoa(unescape(encodeURIComponent(decodedString)));
+				
+				// If the license request does not uses json payloads the data has been sent in raw format. 
+				// But the base64 encoded format of it will have the characters "CAES".
+				if (encodedString.includes("CAES")) {
+					tabIDs[details.tabId].license_data = `$'\\u0008\\u0004'`;
+					tabIDs[details.tabId].license_url = details.url;
+					tabIDs[details.tabId].req_id = details.requestId;
+					
+				// 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;
+					tabIDs[details.tabId].license_url = details.url;
+					tabIDs[details.tabId].req_id = details.requestId;
+					
+				} else {
+					return;
+				}
+            } catch (e) {
+                console.error(e);
+            }
+        }
+    } else if (details.requestBody && details.requestBody.formData && details.method == "POST") {
+		try {
+			if (details.requestBody.formData.widevine2Challenge) {
+				const challenge = String(details.requestBody.formData.widevine2Challenge)
+				if (challenge.includes("CAES")) {
+					const decodedString = `widevine2Challenge=${challenge}&includeHdcpTestKeyInLicense=true`;
+					tabIDs[details.tabId].license_data = decodedString;
+					tabIDs[details.tabId].license_url = details.url;
+					tabIDs[details.tabId].req_id = details.requestId;
+				}
+			} else {
+				return;
+			}
+		} catch (e) {
+			console.error(e);
+		}
+	}
+}
+chrome.webRequest.onBeforeRequest.addListener(
+    getLicenseRequestData,
+    { urls: ["<all_urls>"], 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});
+        requestToClipboard(details.tabId);
+		
+		// Some license requests can hold one time token values in their headers or payload. So blocking such requests before they are sent to the server and capturing them!
+		// If your license request also holds one time values add them in the below line, seprating by an || operator. Remember to disable the extension if you actually need to play the video of these services!
+		if (details.url.includes("api2.hbogoasia.com/onwards-widevine") || details.requestHeaders.includes("prepladder.com") || details.url.includes("scvm1sc0.anycast.nagra.com") || details.url.includes("wvls/contentlicenseservice/v1/licenses")) {
+			return { cancel: true };
+		}
+	}
+}
+chrome.webRequest.onBeforeSendHeaders.addListener(
+    getLicenseRequestHeaders,
+    { urls: ["<all_urls>"], types: ["xmlhttprequest"] },
+    ["requestHeaders", "blocking", "extraHeaders"]
+);
+
+chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
+    if (!request || !sender.tab)
+        return;
+    tabIDs[sender.tab.id] = tabIDs[sender.tab.id] || {};
+	tabIDs[sender.tab.id] = {license_data: "", license_request: [], license_url: "", req_id: "", pssh: request};
+	console.log(`PSSH:- ${tabIDs[sender.tab.id].pssh}`);
+});

PSSH Capture/content-script.js

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+(() => {
+    "use strict";
+
+    window.addEventListener("message", (event) => {
+        if (event.source != window)
+            return;
+
+        if (event.data.type && event.data.type === "38405bbb-36ef-454d-8b32-346f9564c978") {
+            if (event.data.log)
+                chrome.runtime.sendMessage(event.data.log);
+        }
+    }, false);
+
+    const script = document.createElement("script");
+    script.type = "text/javascript";
+    script.defer = false;
+    script.async = false;
+    script.src = chrome.extension.getURL("/eme-logger-mod.js");
+    (document.head || document.documentElement).appendChild(script);
+    script.remove();
+})();

PSSH Capture/eme-logger-mod.js

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+(async () => {
+    const b64 = {
+        decode: s => Uint8Array.from(atob(s), c => c.charCodeAt(0)),
+        encode: b => btoa(String.fromCharCode(...new Uint8Array(b)))
+    };
+
+    const fnproxy = (object, func) => new Proxy(object, { apply: func });
+
+    const proxy = (object, key, func) => Object.defineProperty(object, key, {
+        value: fnproxy(object[key], func)
+    });
+	
+    proxy(MediaKeySession.prototype, 'generateRequest', async (_target, _this, _args) => {
+        const [initDataType, initData] = _args;
+		const pssh = b64.encode(initData);
+        console.groupCollapsed(
+            `PSSH: ${b64.encode(initData)}`
+        );
+        console.trace();
+        console.groupEnd();
+		if (pssh)
+			window.postMessage({ type: "38405bbb-36ef-454d-8b32-346f9564c978", log: pssh }, "*");
+        return _target.apply(_this, _args);
+    });
+})();

PSSH Capture/manifest.json

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+{
+  "name": "PSSH Capture",
+  "version": "3.0",
+  "manifest_version": 2,
+  "background": {
+    "scripts": [
+      "background.js"
+    ]
+  },
+  "content_scripts": [
+    {
+      "matches": [
+		"*://*/*"
+      ],
+      "js": [
+        "content-script.js"
+      ],
+      "all_frames": false,
+      "run_at": "document_start"
+    }
+  ],
+  "browser_action": {"default_icon": "icon.png"},
+  "permissions": [
+	"*://*/*",
+    "clipboardWrite",
+    "tabs",
+    "webRequest",
+	"activeTab",
+	"storage",
+	"webRequestBlocking"
+  ],
+  "web_accessible_resources": [
+    "eme-logger-mod.js"
+  ]
+}