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 RecordingsHelper

  include Pagy::Backend

  include Emailer

  include Registrar

  include Recorder

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

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

  # 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

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

      @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 if Rails.configuration.enable_email_verification

    # 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_verification

    redirect_to root_path

  end

  # GET /signin

  def signin

      flash[: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

    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

      logout

      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

    @user = User.new

  end

  # GET /u/:user_uid/edit

  def edit

    if current_user

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

    else

      redirect_to root_path

    end

  end

  # 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.

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

        redirect_to redirect_path

      else

        # Append custom errors.

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

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

      end

    elsif user_params[:email] != @user.email && @user.update_attributes(user_params) && update_roles

      @user.update_attributes(email_verified: false)

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

      redirect_to redirect_path

    elsif @user.update_attributes(user_params) && update_roles

      update_locale(@user)

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

      redirect_to redirect_path

    else

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

    end

  end

  # DELETE /u/:user_uid

  def destroy

    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 "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), current_user.provider,

         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_verification

    # Start email verification and redirect to root.

    begin

      send_activation_email(@user)

    rescue => e

      logger.error "Error in email delivery: #{e}"

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

    else

      flash[:success] = I18n.t("email_sent", email_type: t("verify.verification"))

    end

  end

  def send_registration_email

    begin

      if invite_registration

        send_invite_user_signup_email(@user)

      elsif approval_registration

        send_approval_user_signup_email(@user)

      end

    rescue => e

      logger.error "Error in email delivery: #{e}"

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

    end

  end

  # Add validation errors to model if they exist

  # 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

  # Updates as user's roles

  def update_roles

    # Check that the user can edit roles

    if current_user.highest_priority_role.can_edit_roles

      new_roles = params[:user][:role_ids].split(' ').map(&:to_i)

      old_roles = @user.roles.pluck(:id)

      added_role_ids = new_roles - old_roles

      removed_role_ids = old_roles - new_roles

      added_roles = []

      removed_roles = []

      current_user_role = current_user.highest_priority_role

      # Check that the user has the permissions to add all the new roles

      added_role_ids.each do |id|

        role = Role.find(id)

        # Admins are able to add the admin role to other users. All other roles may only

        # add roles with a higher priority

        if (role.priority > current_user_role.priority || current_user_role.name == "admin") &&

           role.provider == @user_domain

          added_roles << role

        else

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

          return false

        end

      end

      # Check that the user has the permissions to remove all the deleted roles

      removed_role_ids.each do |id|

        role = Role.find(id)

        # Admins are able to remove the admin role from other users. All other roles may only

        # remove roles with a higher priority

        if (role.priority > current_user_role.priority || current_user_role.name == "admin") &&

           role.provider == @user_domain

          removed_roles << role

        else

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

          return false

        end

      end

      # Send promoted/demoted emails

      added_roles.each { |role| send_user_promoted_email(@user, role.name) if role.send_promoted_email }

      removed_roles.each { |role| send_user_demoted_email(@user, role.name) if role.send_demoted_email }

      # Update the roles

      @user.roles.delete(removed_roles)

      @user.roles << added_roles

      # Make sure each user always has at least the user role

      @user.roles = [Role.find_by(name: "user", provider: @user_domain)] if @user.roles.count.zero?

      @user.save!

    else

      true

    end

  end

end