63 lines
2.1 KiB
Python
63 lines
2.1 KiB
Python
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from flask_wtf import FlaskForm
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from werkzeug.security import generate_password_hash
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from wtforms import EmailField, PasswordField, validators
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from ereuse_devicehub.resources.user.models import User
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class LoginForm(FlaskForm):
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email = EmailField('Email Address', [validators.Length(min=6, max=35)])
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password = PasswordField('Password', [
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validators.DataRequired(),
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])
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error_messages = {
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'invalid_login': (
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"Please enter a correct email and password. Note that both "
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"fields may be case-sensitive."
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),
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'inactive': "This account is inactive.",
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}
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def validate(self, extra_validators=None):
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is_valid = super().validate(extra_validators)
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if not is_valid:
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return False
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email = self.email.data
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password = self.password.data
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self.user_cache = self.authenticate(email, password)
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if self.user_cache is None:
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self.form_errors.append(self.error_messages['invalid_login'])
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return False
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return self.confirm_login_allowed(self.user_cache)
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def authenticate(self, email, password):
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if email is None or password is None:
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return
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user = User.query.filter_by(email=email).first()
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if user is None:
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# Run the default password hasher once to reduce the timing
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# difference between an existing and a nonexistent user (#20760).
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generate_password_hash(password)
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else:
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if user.check_password(password):
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return user
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def confirm_login_allowed(self, user):
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"""
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Controls whether the given User may log in. This is a policy setting,
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independent of end-user authentication. This default behavior is to
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allow login by active users, and reject login by inactive users.
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If the given user cannot log in, this method should raise a
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``ValidationError``.
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If the given user may log in, this method should return None.
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"""
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if not user.is_active:
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self.form_errors.append(self.error_messages['inactive'])
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return user.is_active
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