working safari prototype

Safari/BlockerExtension/BlockerExtension.entitlements

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.security.app-sandbox</key>
+    <true/>
+    <key>com.apple.security.files.user-selected.read-only</key>
+    <true/>
+</dict>
+</plist>

Safari/BlockerExtension/ContentBlockerRequestHandler.swift

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+//
+//  ContentBlockerRequestHandler.swift
+//  BlockerExtension
+//
+//  Created by Bruce Roettgers on 07.04.19.
+//  Copyright © 2019 Dirk Hulverscheidt. All rights reserved.
+//
+
+import Foundation
+
+class ContentBlockerRequestHandler: NSObject, NSExtensionRequestHandling {
+
+    func beginRequest(with context: NSExtensionContext) {
+        let attachment = NSItemProvider(contentsOf: Bundle.main.url(forResource: "blockerList", withExtension: "json"))!
+
+        let item = NSExtensionItem()
+        item.attachments = [attachment]
+
+        context.completeRequest(returningItems: [item], completionHandler: nil)
+    }
+
+}

Safari/BlockerExtension/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleDisplayName</key>
+	<string>BlockerExtension</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>XPC!</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSExtension</key>
+	<dict>
+		<key>NSExtensionPointIdentifier</key>
+		<string>com.apple.Safari.content-blocker</string>
+		<key>NSExtensionPrincipalClass</key>
+		<string>$(PRODUCT_MODULE_NAME).ContentBlockerRequestHandler</string>
+	</dict>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2019 Dirk Hulverscheidt. All rights reserved.</string>
+	<key>NSHumanReadableDescription</key>
+	<string>Add a description of what your extension does here.</string>
+</dict>
+</plist>

Safari/BlockerExtension/blockerList.json

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+[
+    {
+        "action": {
+            "type": "block"
+        },
+        "trigger": {
+            "url-filter": ".*",
+            "resource-type": ["script"]
+        }
+    }
+]