bigbluebutton / greenlight

# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.

#

# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).

#

# This program is free software; you can redistribute it and/or modify it under the

# terms of the GNU Lesser General Public License as published by the Free Software

# Foundation; either version 3.0 of the License, or (at your option) any later

# version.

#

# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY

# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A

# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.

class UsersController < ApplicationController

  include Pagy::Backend

  include Authenticator

  include Emailer

  include Registrar

  include Recorder

  include Rolify

  before_action :find_user, only: [:edit, :change_password, :delete_account, :update, :destroy]

  before_action :ensure_unauthenticated, only: [:new, :create, :signin]

  before_action :check_admin_of, only: [:edit, :change_password, :delete_account]

  # POST /u

  def create

    # Verify that GreenLight is configured to allow user signup.

    return unless Rails.configuration.allow_user_signup

    @user = User.new(user_params)

    @user.provider = @user_domain

    # User or recpatcha is not valid

    render(:new) && return unless valid_user_or_captcha

    # Redirect to root if user token is either invalid or expired

    # User has passed all validations required

    @user.save

    logger.info "Support: #{@user.email} user has been created."

    # Set user to pending and redirect if Approval Registration is set

    if approval_registration

      @user.add_role :pending

      return redirect_to root_path,

        flash: { success: I18n.t("registration.approval.signup") } unless Rails.configuration.enable_email_verification

    end

    send_registration_email

    # Sign in automatically if email verification is disabled or if user is already verified.

    login(@user) && return if !Rails.configuration.enable_email_verification || @user.email_verified

    send_activation_email(@user)

    redirect_to root_path

  end

  # GET /signin

  def signin

    check_if_twitter_account

    providers = configured_providers

    if (!allow_user_signup? || !allow_greenlight_accounts?) && providers.count == 1 &&

       !Rails.configuration.loadbalanced_configuration

      provider_path = if Rails.configuration.omniauth_ldap

        ldap_signin_path

      else

        "#{Rails.configuration.relative_url_root}/auth/#{providers.first}"

      end

      return redirect_to provider_path

    end

  end

  # GET /ldap_signin

  def ldap_signin

  end

  # GET /signup

  def new

    return redirect_to root_path unless Rails.configuration.allow_user_signup

    # Check if the user needs to be invited

    if invite_registration

      redirect_to root_path, flash: { alert: I18n.t("registration.invite.no_invite") } unless params[:invite_token]

      session[:invite_token] = params[:invite_token]

    end

    check_if_twitter_account(true)

    @user = User.new

  end

  # GET /u/:user_uid/edit

  def edit

    redirect_to root_path unless current_user

  end

  # GET /u/:user_uid/change_password

  def change_password

    redirect_to edit_user_path unless current_user.greenlight_account?

  end

  # GET /u/:user_uid/delete_account

  # PATCH /u/:user_uid/edit

  def update

    redirect_path = current_user.admin_of?(@user) ? admins_path : edit_user_path(@user)

    if params[:setting] == "password"

      # Update the users password.

      errors = {}

      if @user.authenticate(user_params[:password])

        # Verify that the new passwords match.

        if user_params[:new_password] == user_params[:password_confirmation]

          @user.password = user_params[:new_password]

        else

          # New passwords don't match.

          errors[:password_confirmation] = "doesn't match"

        end

      else

        # Original password is incorrect, can't update.

        errors[:password] = "is incorrect"

      end

      if errors.empty? && @user.save

        # Notify the user that their account has been updated.

        redirect_to redirect_path, flash: { success: I18n.t("info_update_success") }

      else

        # Append custom errors.

        errors.each { |k, v| @user.errors.add(k, v) }

        render :edit, params: { settings: params[:settings] }

      end

    else

      if @user.update_attributes(user_params)

        @user.update_attributes(email_verified: false) if user_params[:email] != @user.email

        user_locale(@user)

        if update_roles(params[:user][:role_ids])

          return redirect_to redirect_path, flash: { success: I18n.t("info_update_success") }

        else

          flash[:alert] = I18n.t("administrator.roles.invalid_assignment")

        end

      end

      render :edit, params: { settings: params[:settings] }

    end

  end

  # DELETE /u/:user_uid

  def destroy

    logger.info "Support: #{current_user.email} is deleting #{@user.email}."

    if current_user && current_user == @user

      @user.destroy

      session.delete(:user_id)

    elsif current_user.admin_of?(@user)

      begin

        @user.destroy

      rescue => e

        logger.error "Support: Error in user deletion: #{e}"

        flash[:alert] = I18n.t(params[:message], default: I18n.t("administrator.flash.delete_fail"))

      else

        flash[:success] = I18n.t("administrator.flash.delete")

      end

      redirect_to(admins_path) && return

    end

    redirect_to root_path

  end

  # GET /u/:user_uid/recordings

  def recordings

    if current_user && current_user.uid == params[:user_uid]

      @search, @order_column, @order_direction, recs =

        all_recordings(current_user.rooms.pluck(:bbb_id), params.permit(:search, :column, :direction), true)

      @pagy, @recordings = pagy_array(recs)

    else

      redirect_to root_path

    end

  end

  # GET | POST /terms

  def terms

    redirect_to '/404' unless Rails.configuration.terms

    if params[:accept] == "true"

      current_user.update_attributes(accepted_terms: true)

      login(current_user)

    end

  end

  private

  def find_user

    @user = User.where(uid: params[:user_uid]).includes(:roles).first

  end

  def ensure_unauthenticated

    redirect_to current_user.main_room if current_user && params[:old_twitter_user_id].nil?

  end

  def user_params

    params.require(:user).permit(:name, :email, :image, :password, :password_confirmation,

      :new_password, :provider, :accepted_terms, :language)

  end

  def send_registration_email

    if invite_registration

      send_invite_user_signup_email(@user)

    elsif approval_registration

      send_approval_user_signup_email(@user)

    end

  end

  # Add validation errors to model if they exist

  def valid_user_or_captcha

    valid_user = @user.valid?

    valid_captcha = Rails.configuration.recaptcha_enabled ? verify_recaptcha(model: @user) : true

    logger.error("Support: #{@user.email} creation failed: User params are not valid.") unless valid_user

    valid_user && valid_captcha

  end

  # Checks if the user passes the requirements to be invited

  def passes_invite_reqs

    # check if user needs to be invited and IS invited

    invitation = check_user_invited(@user.email, session[:invite_token], @user_domain)

    @user.email_verified = true if invitation[:verified]

    invitation[:present]

  end

  # Checks that the user is allowed to edit this user

  def check_admin_of

    redirect_to current_user.main_room if current_user && @user != current_user && !current_user.admin_of?(@user)

  end

  def check_if_twitter_account(log_out = false)

    unless params[:old_twitter_user_id].nil? && session[:old_twitter_user_id].nil?

      logout if log_out

      flash.now[:alert] = I18n.t("registration.deprecated.new_signin")

      session[:old_twitter_user_id] = params[:old_twitter_user_id] unless params[:old_twitter_user_id].nil?

    end

  end

end