convert to chrome

background.js

@@ -1,16 +1,33 @@
-browser.runtime.onMessage.addListener((message, sender, sendResponse) => {
-  if (message.type === "COOKIE") {
-    return browser.cookies.get({
+const extensionApi = globalThis.browser ?? globalThis.chrome;
+
+extensionApi.runtime.onMessage.addListener((message, sender, sendResponse) => {
+  if (message.type !== "COOKIE") {
+    sendResponse({ error: `Unknown message type ${message.type}` });
+    return false;
+  }
+
+  const details = {
     url: message.url,
     name: message.key
-    });
-    // const cookie = await browser.cookies.get({
-    //   url: message.url,
-    //   name: message.key
-    // });
-    // console.log(cookie)
-    // sendResponse({"cookie":cookie});
-  } else {
-    throw `Unkown message type ${message.type}`
+  };
+
+  if (globalThis.browser?.cookies?.get) {
+    extensionApi.cookies.get(details)
+      .then((cookie) => sendResponse(cookie))
+      .catch((error) => sendResponse({ error: error.message }));
+    return true;
   }
+
+  extensionApi.cookies.get(details, (cookie) => {
+    const runtimeError = extensionApi.runtime.lastError;
+
+    if (runtimeError) {
+      sendResponse({ error: runtimeError.message });
+      return;
+    }
+
+    sendResponse(cookie);
+  });
+
+  return true;
 });

content.js

@@ -1,5 +1,7 @@
 "use strict";
 
+const extensionApi = globalThis.browser ?? globalThis.chrome;
+
 function getApplicationId() {
   const match = window.location.hash.match(/^#\/job-procedures\/record\/([0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12})/)
   if (match != null) {
@@ -10,16 +12,37 @@ function getApplicationId() {
 
 async function getXSRFToken() {
   // we need to go through the background script to get the XSRF-TOKEN cookie
-  return browser.runtime.sendMessage(
-    { type: "COOKIE", url: "https://personal.uni-graz.at", key: "XSRF-TOKEN" }
-  ).then((cookie) => {
-    return cookie.value;
+  return new Promise((resolve, reject) => {
+    extensionApi.runtime.sendMessage(
+      { type: "COOKIE", url: "https://personal.uni-graz.at", key: "XSRF-TOKEN" },
+      (cookie) => {
+        const runtimeError = extensionApi.runtime.lastError;
+
+        if (runtimeError) {
+          reject(new Error(runtimeError.message))
+          return
+        }
+
+        if (cookie?.error != null) {
+          reject(new Error(cookie.error))
+          return
+        }
+
+        if (cookie?.value == null) {
+          reject(new Error("Failed to retrieve XSRF token cookie"))
+          return
+        }
+
+        resolve(cookie.value)
+      }
+    )
   })
 }
 
 async function getApplicant(applicant, token) {
-  return content.fetch(`https://personal.uni-graz.at/api/erec/job-applications/${applicant.id}`,
+  return fetch(`https://personal.uni-graz.at/api/erec/job-applications/${applicant.id}`,
     {
+      credentials: "same-origin",
       headers: { "X-XSRF-TOKEN": token }
     })
     .then((response) => {
@@ -32,7 +55,7 @@ async function getApplicant(applicant, token) {
       const files = jsonData.application_files ?? []
 
       await Promise.all(files.map(async (afile) => {
-        const response = await content.fetch(
+        const response = await fetch(
           `https://personal.uni-graz.at/api/erec/download-file/${afile.file_id}`,
           {
             credentials: "same-origin",
@@ -54,7 +77,7 @@ async function getApplicant(applicant, token) {
 async function getApplicants() {
   const aid = getApplicationId()
   const token = await getXSRFToken()
-  return content.fetch(`https://personal.uni-graz.at/api/erec/job-applications/procedure/${aid}`,
+  return fetch(`https://personal.uni-graz.at/api/erec/job-applications/procedure/${aid}`,
     {
       credentials: "same-origin",
       headers: { "X-XSRF-TOKEN": token }

manifest.json

@@ -1,17 +1,17 @@
 {
-  "manifest_version": 2,
+  "manifest_version": 3,
   "name": "KF-Application-Downloader",
   "version": "0.1.0",
-  "browser_specific_settings": {
-    "gecko": {
-      "id": "gaspard.jankowiak@uni-graz.at"
-    }
-  },
+  "description": "Downloads all files from an application procedure at the KFU",
+  "permissions": [
+    "cookies"
+  ],
+  "host_permissions": [
+    "https://personal.uni-graz.at/*"
+  ],
   "background": {
-    "scripts": ["background.js"]
+    "service_worker": "background.js"
   },
-  "permissions": ["*://personal.uni-graz.at/*", "cookies"],
-  "description": "Downloads all files from a application procedure at the KFU",
   "content_scripts": [
     {
       "matches": [