Add user email verification

powerdnsadmin/services/email.py

@@ -0,0 +1,27 @@
+import traceback
+from flask_mail import Message
+from flask import current_app, render_template, url_for
+
+from .token import generate_confirmation_token
+from ..models.setting import Setting
+
+
+def send_account_verification(user_email):
+    """
+    Send welcome message for the new registration
+    """
+    try:
+        token = generate_confirmation_token(user_email)
+        verification_link = url_for('index.confirm_email', token=token, _external=True)
+
+        subject = "Welcome to {}".format(Setting().get('site_name'))
+        msg = Message(subject=subject)
+        msg.recipients = [user_email]
+        msg.body = "Please access the following link verify your email address. {}".format(
+            verification_link)
+        msg.html = render_template('emails/account_verification.html',
+                                verification_link=verification_link)
+        current_app.mail.send(msg)
+    except Exception as e:
+        current_app.logger.error("Cannot send account verification email. Error: {}".format(e))
+        current_app.logger.debug(traceback.format_exc())

powerdnsadmin/services/token.py

@@ -0,0 +1,18 @@
+from flask import current_app
+from itsdangerous import URLSafeTimedSerializer
+
+
+def generate_confirmation_token(email):
+    serializer = URLSafeTimedSerializer(current_app.config['SECRET_KEY'])
+    return serializer.dumps(email, salt=current_app.config['SALT'])
+
+
+def confirm_token(token, expiration=86400):
+    serializer = URLSafeTimedSerializer(current_app.config['SECRET_KEY'])
+    try:
+        email = serializer.loads(token,
+                                 salt=current_app.config['SALT'],
+                                 max_age=expiration)
+    except:
+        return False
+    return email