()
return render_template('login.html', form=form)
Handler for the login page view.

    There are three ways of authentication.
    1) Google Cloud Identity-Aware Proxy.
    2) If Single Sign On (SSO) is enabled in the configuration and the
       environment variable is present, e.g. REMOTE_USER then the system will
       get or create the user object and setup a session for the user.
    3) Local authentication is used if SSO login is not enabled. This will
       authenticate the user against the local user database.

    Returns:
        Redirect if authentication is successful or template with context
        otherwise.
Handler for the login page view.
Handler for the login page view .
def login():
    """Handler for the login page view.

    There are three ways of authentication.
    1) Google Cloud Identity-Aware Proxy.
    2) If Single Sign On (SSO) is enabled in the configuration and the
       environment variable is present, e.g. REMOTE_USER then the system will
       get or create the user object and setup a session for the user.
    3) Local authentication is used if SSO login is not enabled. This will
       authenticate the user against the local user database.

    Returns:
        Redirect if authentication is successful or template with context
        otherwise.
    """
    # Google OpenID Connect authentication.
    if current_app.config.get('GOOGLE_OIDC_ENABLED', False):
        hosted_domain = current_app.config.get('GOOGLE_OIDC_HOSTED_DOMAIN')
        return redirect(get_oauth2_authorize_url(hosted_domain))

    # Google Identity-Aware Proxy authentication (using JSON Web Tokens)
    if current_app.config.get('GOOGLE_IAP_ENABLED', False):
        encoded_jwt = request.environ.get(
            'HTTP_X_GOOG_IAP_JWT_ASSERTION', None)
        if encoded_jwt:
            expected_audience = current_app.config.get('GOOGLE_IAP_AUDIENCE')
            expected_issuer = current_app.config.get('GOOGLE_IAP_ISSUER')
            algorithm = current_app.config.get('GOOGLE_IAP_ALGORITHM')
            url = current_app.config.get('GOOGLE_IAP_PUBLIC_KEY_URL')
            try:
                public_key = get_public_key_for_jwt(encoded_jwt, url)
                decoded_jwt = decode_jwt(
                    encoded_jwt, public_key, algorithm, expected_audience)
                validate_jwt(decoded_jwt, expected_issuer)
                email = decoded_jwt.get('email')
                if email:
                    user = User.get_or_create(username=email, name=email)
                    login_user(user)

            except (ImportError, NameError, UnboundLocalError):
                raise

            except (JwtValidationError, JwtKeyError, Exception) as e:  # pylint: disable=broad-except
                current_app.logger.error('{}'.format(e))

    # SSO login based on environment variable, e.g. REMOTE_USER.
    if current_app.config.get('SSO_ENABLED', False):
        remote_user_env = current_app.config.get('SSO_USER_ENV_VARIABLE',
                                                 'REMOTE_USER')
        sso_group_env = current_app.config.get('SSO_GROUP_ENV_VARIABLE', None)

        remote_user = request.environ.get(remote_user_env, None)
        if remote_user:
            user = User.get_or_create(username=remote_user, name=remote_user)
            login_user(user)

        # If we get groups from the SSO system create the group(s) in
        # Timesketch and add/remove the user from it.
        if sso_group_env:
            groups_string = request.environ.get(sso_group_env, '')
            separator = current_app.config.get('SSO_GROUP_SEPARATOR', ';')
            not_member_sign = current_app.config.get(
                'SSO_GROUP_NOT_MEMBER_SIGN', None)
            for group_name in groups_string.split(separator):
                remove_group = False
                if not_member_sign:
                    remove_group = group_name.startswith(not_member_sign)
                    group_name = group_name.lstrip(not_member_sign)

                # Get or create the group in the Timesketch database.
                group = Group.get_or_create(name=group_name)

                if remove_group:
                    if group in user.groups:
                        user.groups.remove(group)
                else:
                    if group not in user.groups:
                        user.groups.append(group)
            # Commit the changes to the database.
            db_session.commit()

    # Login form POST
    form = UsernamePasswordForm()
    if form.validate_on_submit:
        user = User.query.filter_by(username=form.username.data).first()
        if user:
            if user.check_password(plaintext=form.password.data):
                login_user(user)

    # Log the user in and setup the session.
    if current_user.is_authenticated:
        return redirect(request.args.get('next') or '/')

    return render_template('login.html', form=form)
def login ( ) : # Google OpenID Connect authentication. if current_app . config . get ( 'GOOGLE_OIDC_ENABLED' , False ) : hosted_domain = current_app . config . get ( 'GOOGLE_OIDC_HOSTED_DOMAIN' ) return redirect ( get_oauth2_authorize_url ( hosted_domain ) ) # Google Identity-Aware Proxy authentication (using JSON Web Tokens) if current_app . config . get ( 'GOOGLE_IAP_ENABLED' , False ) : encoded_jwt = request . environ . get ( 'HTTP_X_GOOG_IAP_JWT_ASSERTION' , None ) if encoded_jwt : expected_audience = current_app . config . get ( 'GOOGLE_IAP_AUDIENCE' ) expected_issuer = current_app . config . get ( 'GOOGLE_IAP_ISSUER' ) algorithm = current_app . config . get ( 'GOOGLE_IAP_ALGORITHM' ) url = current_app . config . get ( 'GOOGLE_IAP_PUBLIC_KEY_URL' ) try : public_key = get_public_key_for_jwt ( encoded_jwt , url ) decoded_jwt = decode_jwt ( encoded_jwt , public_key , algorithm , expected_audience ) validate_jwt ( decoded_jwt , expected_issuer ) email = decoded_jwt . get ( 'email' ) if email : user = User . get_or_create ( username = email , name = email ) login_user ( user ) except ( ImportError , NameError , UnboundLocalError ) : raise except ( JwtValidationError , JwtKeyError , Exception ) as e : # pylint: disable=broad-except current_app . logger . error ( '{}' . format ( e ) ) # SSO login based on environment variable, e.g. REMOTE_USER. if current_app . config . get ( 'SSO_ENABLED' , False ) : remote_user_env = current_app . config . get ( 'SSO_USER_ENV_VARIABLE' , 'REMOTE_USER' ) sso_group_env = current_app . config . get ( 'SSO_GROUP_ENV_VARIABLE' , None ) remote_user = request . environ . get ( remote_user_env , None ) if remote_user : user = User . get_or_create ( username = remote_user , name = remote_user ) login_user ( user ) # If we get groups from the SSO system create the group(s) in # Timesketch and add/remove the user from it. if sso_group_env : groups_string = request . environ . get ( sso_group_env , '' ) separator = current_app . config . get ( 'SSO_GROUP_SEPARATOR' , ';' ) not_member_sign = current_app . config . get ( 'SSO_GROUP_NOT_MEMBER_SIGN' , None ) for group_name in groups_string . split ( separator ) : remove_group = False if not_member_sign : remove_group = group_name . startswith ( not_member_sign ) group_name = group_name . lstrip ( not_member_sign ) # Get or create the group in the Timesketch database. group = Group . get_or_create ( name = group_name ) if remove_group : if group in user . groups : user . groups . remove ( group ) else : if group not in user . groups : user . groups . append ( group ) # Commit the changes to the database. db_session . commit ( ) # Login form POST form = UsernamePasswordForm ( ) if form . validate_on_submit : user = User . query . filter_by ( username = form . username . data ) . first ( ) if user : if user . check_password ( plaintext = form . password . data ) : login_user ( user ) # Log the user in and setup the session. if current_user . is_authenticated : return redirect ( request . args . get ( 'next' ) or '/' ) return render_template ( 'login.html' , form = form )