388 lines
11 KiB
Ruby
388 lines
11 KiB
Ruby
# frozen_string_literal: true
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class Invite < ActiveRecord::Base
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class UserExists < StandardError
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end
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class RedemptionFailed < StandardError
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end
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class ValidationFailed < StandardError
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end
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include RateLimiter::OnCreateRecord
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include Trashable
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# TODO(2021-05-22): remove
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self.ignored_columns = %w[user_id redeemed_at]
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BULK_INVITE_EMAIL_LIMIT = 200
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DOMAIN_REGEX =
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/\A(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)+([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])\z/
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rate_limit :limit_invites_per_day
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belongs_to :invited_by, class_name: "User"
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has_many :invited_users
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has_many :users, through: :invited_users
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has_many :invited_groups
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has_many :groups, through: :invited_groups
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has_many :topic_invites
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has_many :topics, through: :topic_invites, source: :topic
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validates_presence_of :invited_by_id
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validates :email, email: true, allow_blank: true
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validates :custom_message, length: { maximum: 1000 }
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validate :ensure_max_redemptions_allowed
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validate :valid_redemption_count
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validate :valid_domain, if: :will_save_change_to_domain?
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validate :user_doesnt_already_exist, if: :will_save_change_to_email?
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validate :email_xor_domain
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before_create do
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self.invite_key ||= SecureRandom.base58(10)
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self.expires_at ||= SiteSetting.invite_expiry_days.days.from_now
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end
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before_save do
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self.email_token = email.present? ? SecureRandom.hex : nil if will_save_change_to_email?
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end
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before_validation { self.email = Email.downcase(email) unless email.nil? }
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attribute :email_already_exists
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def self.emailed_status_types
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@emailed_status_types ||=
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Enum.new(not_required: 0, pending: 1, bulk_pending: 2, sending: 3, sent: 4)
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end
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def user_doesnt_already_exist
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self.email_already_exists = false
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return if email.blank?
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user = Invite.find_user_by_email(email)
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if user && user.id != self.invited_users&.first&.user_id
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self.email_already_exists = true
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errors.add(:base, user_exists_error_msg(email))
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end
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end
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def email_xor_domain
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errors.add(:base, I18n.t("invite.email_xor_domain")) if email.present? && domain.present?
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end
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# Even if a domain is specified on the invite, it still counts as
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# an invite link.
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def is_invite_link?
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self.email.blank?
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end
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# Email invites have specific behaviour and it's easier to visually
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# parse is_email_invite? than !is_invite_link?
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def is_email_invite?
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self.email.present?
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end
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def redeemable?
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!redeemed? && !expired? && !deleted_at? && !destroyed? && link_valid?
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end
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def redeemed_by_user?(redeeming_user)
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self.invited_users.exists?(user: redeeming_user)
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end
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def redeemed?
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if is_invite_link?
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redemption_count >= max_redemptions_allowed
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else
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self.invited_users.count > 0
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end
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end
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def email_matches?(email)
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email.downcase == self.email.downcase
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end
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def domain_matches?(email)
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_, domain = email.split("@")
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self.domain == domain
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end
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def can_be_redeemed_by?(user)
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return false if !self.redeemable?
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return false if redeemed_by_user?(user)
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return true if self.domain.blank? && self.email.blank?
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return true if self.email.present? && email_matches?(user.email)
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self.domain.present? && domain_matches?(user.email)
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end
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def expired?
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expires_at < Time.zone.now
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end
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def link(with_email_token: false)
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if with_email_token
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"#{Discourse.base_url}/invites/#{invite_key}?t=#{email_token}"
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else
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"#{Discourse.base_url}/invites/#{invite_key}"
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end
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end
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def link_valid?
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invalidated_at.nil?
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end
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def self.generate(invited_by, opts = nil)
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opts ||= {}
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email = Email.downcase(opts[:email]) if opts[:email].present?
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raise UserExists.new(new.user_exists_error_msg(email)) if find_user_by_email(email)
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if email.present?
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invite =
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Invite
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.with_deleted
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.where(email: email, invited_by_id: invited_by.id)
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.order("created_at DESC")
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.first
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if invite && (invite.expired? || invite.deleted_at)
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invite.destroy
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invite = nil
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end
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email_digest = Digest::SHA256.hexdigest(email)
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RateLimiter.new(invited_by, "reinvites-per-day-#{email_digest}", 3, 1.day.to_i).performed!
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end
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emailed_status =
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if opts[:skip_email] || invite&.emailed_status == emailed_status_types[:not_required]
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emailed_status_types[:not_required]
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elsif opts[:emailed_status].present?
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opts[:emailed_status]
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elsif email.present?
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emailed_status_types[:pending]
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else
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emailed_status_types[:not_required]
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end
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if invite
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invite.update_columns(
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created_at: Time.zone.now,
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updated_at: Time.zone.now,
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expires_at: opts[:expires_at] || SiteSetting.invite_expiry_days.days.from_now,
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emailed_status: emailed_status,
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)
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else
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create_args =
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opts.slice(:email, :domain, :moderator, :custom_message, :max_redemptions_allowed)
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create_args[:invited_by] = invited_by
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create_args[:email] = email
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create_args[:emailed_status] = emailed_status
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create_args[:expires_at] = opts[:expires_at] || SiteSetting.invite_expiry_days.days.from_now
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invite = Invite.create!(create_args)
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end
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topic_id = opts[:topic]&.id || opts[:topic_id]
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invite.topic_invites.find_or_create_by!(topic_id: topic_id) if topic_id.present?
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group_ids = opts[:group_ids]
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if group_ids.present?
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group_ids.each { |group_id| invite.invited_groups.find_or_create_by!(group_id: group_id) }
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end
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if emailed_status == emailed_status_types[:pending]
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invite.update_column(:emailed_status, emailed_status_types[:sending])
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Jobs.enqueue(:invite_email, invite_id: invite.id, invite_to_topic: opts[:invite_to_topic])
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end
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invite.reload
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end
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def redeem(
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email: nil,
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username: nil,
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name: nil,
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password: nil,
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user_custom_fields: nil,
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ip_address: nil,
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session: nil,
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email_token: nil,
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redeeming_user: nil
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)
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return if !redeemable?
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InviteRedeemer.new(
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invite: self,
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email: email,
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username: username,
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name: name,
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password: password,
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user_custom_fields: user_custom_fields,
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ip_address: ip_address,
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session: session,
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email_token: email_token,
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redeeming_user: redeeming_user,
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).redeem
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end
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def self.redeem_for_existing_user(user)
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invite = Invite.find_by(email: Email.downcase(user.email))
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if invite.present? && invite.redeemable?
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InviteRedeemer.new(invite: invite, redeeming_user: user).redeem
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end
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invite
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end
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def self.find_user_by_email(email)
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User.with_email(Email.downcase(email)).where(staged: false).first
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end
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def self.pending(inviter)
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Invite
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.distinct
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.joins("LEFT JOIN invited_users ON invites.id = invited_users.invite_id")
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.joins("LEFT JOIN users ON invited_users.user_id = users.id")
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.where(invited_by_id: inviter.id)
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.where("redemption_count < max_redemptions_allowed")
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.where("expires_at > ?", Time.zone.now)
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.order("invites.updated_at DESC")
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end
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def self.expired(inviter)
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Invite
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.distinct
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.joins("LEFT JOIN invited_users ON invites.id = invited_users.invite_id")
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.joins("LEFT JOIN users ON invited_users.user_id = users.id")
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.where(invited_by_id: inviter.id)
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.where("redemption_count < max_redemptions_allowed")
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.where("expires_at < ?", Time.zone.now)
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.order("invites.expires_at ASC")
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end
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def self.redeemed_users(inviter)
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InvitedUser
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.joins("LEFT JOIN invites ON invites.id = invited_users.invite_id")
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.includes(user: :user_stat)
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.where("invited_users.user_id IS NOT NULL")
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.where("invites.invited_by_id = ?", inviter.id)
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.order("invited_users.redeemed_at DESC")
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.references("invite")
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.references("user")
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.references("user_stat")
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end
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def self.invalidate_for_email(email)
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invite = Invite.find_by(email: Email.downcase(email))
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invite.update!(invalidated_at: Time.zone.now) if invite
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invite
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end
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def resend_invite
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self.update_columns(
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updated_at: Time.zone.now,
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invalidated_at: nil,
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expires_at: SiteSetting.invite_expiry_days.days.from_now,
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)
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Jobs.enqueue(:invite_email, invite_id: self.id)
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end
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def limit_invites_per_day
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RateLimiter.new(invited_by, "invites-per-day", SiteSetting.max_invites_per_day, 1.day.to_i)
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end
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def self.base_directory
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File.join(
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Rails.root,
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"public",
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"uploads",
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"csv",
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RailsMultisite::ConnectionManagement.current_db,
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)
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end
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def ensure_max_redemptions_allowed
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if self.max_redemptions_allowed.nil?
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self.max_redemptions_allowed = 1
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else
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limit =
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(
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if invited_by&.staff?
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SiteSetting.invite_link_max_redemptions_limit
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else
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SiteSetting.invite_link_max_redemptions_limit_users
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end
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)
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if self.email.present? && self.max_redemptions_allowed != 1
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errors.add(:max_redemptions_allowed, I18n.t("invite.max_redemptions_allowed_one"))
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elsif !self.max_redemptions_allowed.between?(1, limit)
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errors.add(
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:max_redemptions_allowed,
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I18n.t("invite_link.max_redemptions_limit", max_limit: limit),
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)
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end
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end
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end
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def valid_redemption_count
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if self.redemption_count > self.max_redemptions_allowed
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errors.add(
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:redemption_count,
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I18n.t(
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"invite.redemption_count_less_than_max",
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max_redemptions_allowed: self.max_redemptions_allowed,
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),
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)
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end
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end
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def valid_domain
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return if self.domain.blank?
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self.domain.downcase!
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if self.domain !~ Invite::DOMAIN_REGEX
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self.errors.add(:base, I18n.t("invite.domain_not_allowed"))
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end
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end
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def user_exists_error_msg(email)
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error_key = SiteSetting.hide_email_address_taken? ? "generic_error_response" : "user_exists"
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I18n.t("invite.#{error_key}", email: CGI.escapeHTML(email))
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end
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end
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# == Schema Information
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#
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# Table name: invites
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#
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# id :integer not null, primary key
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# invite_key :string(32) not null
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# email :string
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# invited_by_id :integer not null
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# created_at :datetime not null
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# updated_at :datetime not null
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# deleted_at :datetime
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# deleted_by_id :integer
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# invalidated_at :datetime
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# moderator :boolean default(FALSE), not null
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# custom_message :text
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# emailed_status :integer
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# max_redemptions_allowed :integer default(1), not null
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# redemption_count :integer default(0), not null
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# expires_at :datetime not null
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# email_token :string
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# domain :string
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#
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# Indexes
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#
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# index_invites_on_email_and_invited_by_id (email,invited_by_id)
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# index_invites_on_emailed_status (emailed_status)
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# index_invites_on_invite_key (invite_key) UNIQUE
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# index_invites_on_invited_by_id (invited_by_id)
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#
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