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from cryptography.hazmat.primitives import serialization |
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from flask import Flask, request, jsonify |
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from models import db, VAPIDKey, Subscription |
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from pywebpush import webpush, WebPushException |
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from typing import Dict, Tuple, Union, Optional |
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from flask import Flask, request, jsonify, Response |
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from models import db, VAPIDKey, Subscription |
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from cryptography.hazmat.backends import default_backend |
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from cryptography.hazmat.backends import default_backend |
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from cryptography.hazmat.primitives import serialization |
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from cryptography.hazmat.primitives import serialization |
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from cryptography.hazmat.primitives.asymmetric import ec |
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from cryptography.hazmat.primitives.asymmetric import ec |
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from pywebpush import webpush, WebPushException |
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import base64 |
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import base64 |
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import binascii |
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import threading |
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import json |
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import os |
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import re |
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import time |
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import time |
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def create_app(config_name): |
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class WebPushService: |
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app = Flask(__name__) |
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app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///data/webpush.db' |
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def __init__(self, config_name: str) -> None: |
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db.init_app(app) |
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self.app = Flask(__name__) |
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self.app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///data/webpush.db' |
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db.init_app(self.app) |
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with self.app.app_context(): |
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self._initialize() |
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self.daily_notification_thread = threading.Thread(target=self._send_daily_notifications) |
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self.daily_notification_thread.start() |
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def generate_and_save_vapid_keys(): |
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def _generate_and_save_vapid_keys(self) -> None: |
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try: |
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try: |
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private_key = ec.generate_private_key(ec.SECP256R1(), default_backend()) |
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private_key = ec.generate_private_key(ec.SECP256R1(), default_backend()) |
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public_key_bytes = private_key.public_key().public_bytes( |
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public_key_bytes = private_key.public_key().public_bytes( |
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@ -34,7 +38,6 @@ def create_app(config_name): |
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format=serialization.PrivateFormat.PKCS8, |
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format=serialization.PrivateFormat.PKCS8, |
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encryption_algorithm=serialization.NoEncryption() |
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encryption_algorithm=serialization.NoEncryption() |
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) |
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) |
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private_key_base64 = base64.b64encode(private_key_bytes).decode() |
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private_key_base64 = base64.b64encode(private_key_bytes).decode() |
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key = VAPIDKey(public_key=public_key_base64, private_key=private_key_base64) |
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key = VAPIDKey(public_key=public_key_base64, private_key=private_key_base64) |
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@ -45,74 +48,68 @@ def create_app(config_name): |
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print(f"Error generating VAPID keys: {e}") |
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print(f"Error generating VAPID keys: {e}") |
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def _initialize(self) -> None: |
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def initialize(): |
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if not VAPIDKey.query.first(): |
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if not VAPIDKey.query.first(): |
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generate_and_save_vapid_keys() |
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self._generate_and_save_vapid_keys() |
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def send_push_notification(subscription_info, message, vapid_key): |
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def _send_push_notification(self, subscription_info: Dict, message: Dict, vapid_key: VAPIDKey) -> bool: |
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result = True |
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try: |
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try: |
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private_key_base64 = vapid_key.private_key |
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webpush( |
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webpush( |
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subscription_info=subscription_info, |
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subscription_info=subscription_info, |
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data=json.dumps(message), |
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data=json.dumps(message), |
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vapid_private_key=private_key_base64, |
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vapid_private_key=vapid_key.private_key, |
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vapid_claims={ |
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vapid_claims={"sub": "mailto:admin@yourdomain.com"} |
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"sub": "mailto:info@timesafari.org" |
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} |
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) |
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) |
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return True |
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except Exception as e: |
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except WebPushException as ex: |
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result = False |
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print(f"Failed to send push notification: {ex}") |
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print(f"Failed to send notification: {e}") |
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return result |
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def is_valid_base64_url(s): |
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return re.match(r'^[A-Za-z0-9_-]*$', s) is not None |
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def is_valid_server_key(server_key): |
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if not is_valid_base64_url(server_key): |
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return False |
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return False |
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return len(server_key) == 88 |
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@app.route('/web-push/clear_subscriptions', methods=['POST']) |
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def _send_daily_notifications(self) -> None: |
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def clear_subscriptions(): |
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while True: |
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with self.app.app_context(): |
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all_subscriptions = Subscription.query.all() |
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vapid_key = VAPIDKey.query.first() |
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message = {"title": "Daily Update", "message": "Here's your daily update!"} |
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for subscription in all_subscriptions: |
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subscription_info = { |
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"endpoint": subscription.endpoint, |
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"keys": { |
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"p256dh": subscription.p256dh, |
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"auth": subscription.auth |
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} |
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} |
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self._send_push_notification(subscription_info, message, vapid_key) |
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time.sleep(24 * 60 * 60) |
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# Route handlers and other methods would go here... |
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@app.route('/regenerate_vapid', methods=['POST']) |
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def regenerate_vapid(self) -> Tuple[str, int]: |
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try: |
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try: |
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Subscription.query.delete() |
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with self.app.app_context(): |
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return jsonify(message='Subscriptions cleared') |
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VAPIDKey.query.delete() |
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db.session.commit() |
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except Exception as e: |
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self._generate_and_save_vapid_keys() |
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return jsonify(error=f'Error clearing subscriptions: {str(e)}'), 500 |
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@app.route('/web-push/regenerate_vapid_keys', methods=['POST']) |
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return jsonify(success=True, message="VAPID keys regenerated successfully"), 200 |
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def regenerate_vapid_keys(): |
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try: |
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# Generate new VAPID keys |
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VAPIDKey.query.delete() |
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generate_and_save_vapid_keys() |
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return jsonify(message='VAPID keys regenerated successfully') |
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except Exception as e: |
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except Exception as e: |
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return jsonify(error=f'Error regenerating VAPID keys: {str(e)}'), 500 |
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return jsonify(error=f'Error regenerating VAPID keys: {str(e)}'), 500 |
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@app.route('/web-push/vapid', methods=['GET']) |
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@app.route('/get_vapid') |
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def get_vapid(): |
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def get_vapid(self) -> Response: |
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key = VAPIDKey.query.first() |
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key = VAPIDKey.query.first() |
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return jsonify(vapidKey=key.public_key) |
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return jsonify(vapidKey=key.public_key) |
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@app.route('/web-push/subscribe', methods=['POST']) |
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@app.route('/subscribe', methods=['POST']) |
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def subscribe(): |
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def subscribe(self) -> Tuple[str, int]: |
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content = request.json |
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content = request.json |
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vapid_key = VAPIDKey.query.first() |
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vapid_key = VAPIDKey.query.first() |
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@ -137,13 +134,13 @@ def create_app(config_name): |
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} |
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} |
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message = {"title": "Subscription Successful", "message": "Thank you for subscribing!"} |
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message = {"title": "Subscription Successful", "message": "Thank you for subscribing!"} |
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success = send_push_notification(subscription_info, message, vapid_key) |
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success = self._send_push_notification(subscription_info, message, vapid_key) |
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return jsonify(success=success, message=vapid_key.private_key) |
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return jsonify(success=success, message=vapid_key.private_key) |
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@app.route('/web-push/unsubscribe', methods=['DELETE']) |
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@app.route('/unsubscribe', methods=['POST']) |
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def unsubscribe(): |
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def unsubscribe(self) -> Tuple[str, int]: |
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content = request.json |
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content = request.json |
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endpoint = content['endpoint'] |
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endpoint = content['endpoint'] |
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subscription = Subscription.query.filter_by(endpoint=endpoint).first() |
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subscription = Subscription.query.filter_by(endpoint=endpoint).first() |
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@ -152,11 +149,5 @@ def create_app(config_name): |
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db.session.delete(subscription) |
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db.session.delete(subscription) |
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db.session.commit() |
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db.session.commit() |
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return jsonify(success=True, message="Subscription deleted successfully") |
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return jsonify(success=True, message="Subscription deleted successfully") |
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else: |
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else: |
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return jsonify(success=False, error="Subscription not found"), 404 |
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return jsonify(success=False, error="Subscription not found"), 404 |
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with app.app_context(): |
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initialize() |
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return app |
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