[injectors/mv3] rewrite with csp workaround (#22)

* [injectors/mv3] use csp workaround

* [injectors/mv3] append script to documentElement because head doesn't exist yet

* [injectors/mv3] bump version to 1.2

injectors/mv3/content.js

@@ -1 +1,4 @@
-chrome.runtime.sendMessage("pwnme");
+const script = document.createElement("script");
+script.src = chrome.runtime.getURL("shelter-loader.js");
+
+document.documentElement.append(script);

injectors/mv3/dnr_rules.json → injectors/mv3/dnr-rules.json

@@ -12,8 +12,7 @@
       ]
     },
     "condition": {
-      "regexFilter": "https?://discord.com/.*",
-      "resourceTypes": ["main_frame"]
+      "resourceTypes": ["main_frame", "sub_frame"]
     }
   }
 ]

injectors/mv3/manifest.json

@@ -1,31 +1,31 @@
 {
   "name": "Shelter MV3 Inj",
-  "version": "1.1",
+  "version": "1.2",
   "homepage_url": "https://github.com/uwu/shelter",
   "description": "Injects shelter on discord.com/app - for MV3 browsers",
   "manifest_version": 3,
-  "permissions": ["debugger", "storage", "declarativeNetRequestWithHostAccess"],
-  "host_permissions": ["https://*/*"],
-  "background": {
-    "service_worker": "worker.js"
-  },
+  "permissions": ["declarativeNetRequest"],
+  "host_permissions": ["*://*.discord.com/*"],
   "content_scripts": [
     {
-      "matches": ["https://discord.com/*", "https://*.discord.com/*"],
+      "matches": ["*://*.discord.com/*"],
       "js": ["content.js"],
       "run_at": "document_start"
     }
   ],
   "icons": {},
-  "externally_connectable": {
-    "matches": ["https://discord.com/*", "https://*.discord.com/*"]
-  },
+  "web_accessible_resources": [
+    {
+      "resources": ["shelter-loader.js"],
+      "matches": ["*://*.discord.com/*"]
+    }
+  ],
   "declarative_net_request": {
     "rule_resources": [
       {
         "id": "discord_nocsp",
         "enabled": true,
-        "path": "dnr_rules.json"
+        "path": "dnr-rules.json"
       }
     ]
   }

injectors/mv3/shelter-loader.js

@@ -0,0 +1,27 @@
+const SHELTER_URL = "https://raw.githubusercontent.com/uwu/shelter-builds/main/shelter.js";
+
+// discord removes localStorage later, so hold onto it
+const localStorage = window.localStorage;
+
+async function fetchShelter() {
+  const shelter = await (await fetch(SHELTER_URL)).text();
+  return `${shelter}\n//# sourceMappingURL=${SHELTER_URL}.map`;
+}
+
+async function initShelter() {
+  const localShelter = localStorage.getItem("shelter-bundle");
+
+  if (localShelter) {
+    const script = document.createElement("script");
+    script.innerText = localShelter;
+    document.documentElement.append(script);
+  }
+
+  const remoteShelter = await fetchShelter();
+  if (remoteShelter === localShelter) return;
+
+  localStorage.setItem("shelter-bundle", remoteShelter);
+  window.location.reload();
+}
+
+initShelter();