feat(extension): initial commit

extension/manifest.json

@@ -0,0 +1,23 @@
+
+{
+   "manifest_version":2, 
+   "name": "aci",
+   "version": "0.0.1",
+   "description": "aci",
+   "content_scripts":[
+      {
+         "matches":  ["*://checkin.york.ac.uk/selfregistration"],
+         "js": ["src/content.js"]
+      }
+   ],
+   "permissions": [
+      "webRequest",
+      "*://aci-api.ashhhleyyy.dev/*",
+      "*://checkin.york.ac.uk/*"
+   ],
+   "background": {
+      "scripts": ["src/background.js"],
+      "persistent": false,
+      "type": "module"
+   }
+}

extension/src/background.js

@@ -0,0 +1,46 @@
+console.log('i am a background script');
+
+const codeCache = new Map();
+
+function extractActivityId(url) {
+    const m = url.match(/^https:\/\/checkin\.york\.ac\.uk\/api\/selfregistration\/([0-9]+)\/present$/m);
+    return m[1];
+}
+
+function interceptSubmit(details) {
+    const activityId = extractActivityId(details.url);
+    const codeCorrect = details.statusCode >= 200 && details.statusCode <= 299;
+    if (!codeCache.has(activityId)) {
+        console.error('we did not manage to log a code for activity', activityId);
+        return;
+    }
+    const code = codeCache.get(activityId);
+    codeCache.delete(activityId);
+    console.log('request for activity', activityId, 'the code', code, 'was', codeCorrect ? 'correct' : 'incorrect');
+}
+
+function interceptCode(details) {
+    const activityId = extractActivityId(details.url);
+    const body = details.requestBody;
+    if (body.error) {
+        console.error('failed to obtain request body', body.error);
+        return;
+    }
+    if (!body.formData) {
+        console.error('request body did not have form data');
+        return;
+    }
+    if (!body.formData['code']) {
+        console.error('request did not contain a code');
+        return;
+    }
+    const code = body.formData['code'][0];
+    codeCache.set(activityId, code);
+}
+
+browser.webRequest.onBeforeRequest.addListener(interceptCode, {
+    urls: ['https://checkin.york.ac.uk/api/selfregistration/*/present'],
+}, ['requestBody']);
+browser.webRequest.onCompleted.addListener(interceptSubmit, {
+    urls: ['https://checkin.york.ac.uk/api/selfregistration/*/present'],
+});

extension/src/content.js

@@ -0,0 +1 @@
+console.log('hello');