313 lines
9.6 KiB
Ruby
313 lines
9.6 KiB
Ruby
# frozen_string_literal: true
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# NOTE: There are a _lot_ of complicated rules and conditions for our
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# invite system, and the code is spread out through a lot of places.
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# Tread lightly and read carefully when modifying this code. You may
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# also want to look at:
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#
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# * InvitesController
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# * SessionController
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# * Invite model
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# * User model
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#
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# Invites that are scoped to a specific email (email IS NOT NULL on the Invite
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# model) have different rules to invites that are considered an "invite link",
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# (email IS NULL) on the Invite model.
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class InviteRedeemer
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attr_reader :invite,
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:email,
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:username,
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:name,
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:password,
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:user_custom_fields,
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:ip_address,
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:session,
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:email_token,
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:redeeming_user
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def initialize(
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invite:,
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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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@invite = invite
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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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ensure_email_is_present!(email)
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end
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def redeem
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Invite.transaction do
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if can_redeem_invite? && mark_invite_redeemed
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process_invitation
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invited_user
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end
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end
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end
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# The email must be present in some form since many of the methods
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# for processing + redemption rely on it. If it's still nil after
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# these checks then we have hit an edge case and should not proceed!
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def ensure_email_is_present!(email)
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if email.blank?
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Rails.logger.warn(
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"email param was blank in InviteRedeemer for invite ID #{@invite.id}. The `redeeming_user` was #{@redeeming_user.present? ? "(ID: #{@redeeming_user.id})" : "not"} present.",
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)
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end
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if email.blank? && @invite.is_email_invite?
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@email = @invite.email
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elsif @redeeming_user.present?
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@email = @redeeming_user.email
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else
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@email = email
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end
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raise Discourse::InvalidParameters if @email.blank?
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end
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# This will _never_ be called if there is a redeeming_user being passed
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# in to InviteRedeemer -- see invited_user below.
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def self.create_user_from_invite(
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email:,
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invite:,
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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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)
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if username && UsernameValidator.new(username).valid_format? &&
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User.username_available?(username, email)
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available_username = username
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else
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available_username = UserNameSuggester.suggest(email)
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end
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user = User.where(staged: true).with_email(email.strip.downcase).first
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user.unstage! if user
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user ||= User.new
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user.attributes = {
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email: email,
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username: available_username,
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name: name || available_username,
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active: false,
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trust_level: SiteSetting.default_invitee_trust_level,
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ip_address: ip_address,
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registration_ip_address: ip_address,
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}
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if (!SiteSetting.must_approve_users && SiteSetting.invite_only) ||
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(SiteSetting.must_approve_users? && EmailValidator.can_auto_approve_user?(user.email))
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ReviewableUser.set_approved_fields!(user, Discourse.system_user)
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end
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user_fields = UserField.all
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if user_custom_fields.present? && user_fields.present?
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field_params = user_custom_fields || {}
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fields = user.custom_fields
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user_fields.each do |f|
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field_params[f.id.to_s] = nil if field_params[f.id.to_s] === "false"
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field_val = field_params[f.id.to_s]
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fields["#{User::USER_FIELD_PREFIX}#{f.id}"] = field_val[
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0...UserField.max_length
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] if field_val.present?
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end
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user.custom_fields = fields
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end
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user.moderator = true if invite.moderator? && invite.invited_by.staff?
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if password
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user.password = password
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user.password_required!
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end
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authenticator = UserAuthenticator.new(user, session, require_password: false)
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if !authenticator.has_authenticator? && !SiteSetting.enable_local_logins
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raise ActiveRecord::RecordNotSaved.new(I18n.t("login.incorrect_username_email_or_password"))
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end
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authenticator.start
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if authenticator.email_valid? && !authenticator.authenticated?
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raise ActiveRecord::RecordNotSaved.new(I18n.t("login.incorrect_username_email_or_password"))
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end
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user.save!
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authenticator.finish
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if invite.emailed_status != Invite.emailed_status_types[:not_required] &&
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email == invite.email && invite.email_token.present? && email_token == invite.email_token
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user.activate
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end
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User.find(user.id)
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end
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private
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def can_redeem_invite?
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return false if !invite.redeemable?
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return false if email.blank?
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# Invite scoped to email has already been redeemed by anyone.
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return false if invite.is_email_invite? && InvitedUser.exists?(invite_id: invite.id)
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# The email will be present for either an invite link (where the user provides
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# us the email manually) or for an invite scoped to an email, where we
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# prefill the email and do not let the user modify it.
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#
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# Note that an invite link can also have a domain scope which must be checked.
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email_to_check = redeeming_user&.email || email
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if invite.email.present? && !invite.email_matches?(email_to_check)
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raise ActiveRecord::RecordNotSaved.new(I18n.t("invite.not_matching_email"))
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end
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if invite.domain.present? && !invite.domain_matches?(email_to_check)
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raise ActiveRecord::RecordNotSaved.new(I18n.t("invite.domain_not_allowed"))
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end
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# Anon user is trying to redeem an invitation, if an existing user already
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# redeemed it then we cannot redeem now.
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redeeming_user ||= User.where(admin: false, staged: false).find_by_email(email)
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if redeeming_user.present? &&
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InvitedUser.exists?(user_id: redeeming_user.id, invite_id: invite.id)
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raise Invite::UserExists.new(I18n.t("invite.existing_user_already_redemeed"))
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end
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true
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end
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# Note that the invited_user is returned by #redeemed, so other places
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# (e.g. the InvitesController) can perform further actions on it, this
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# is why things like send_welcome_message are set without being saved
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# on the model.
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def invited_user
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return @invited_user if defined?(@invited_user)
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# The redeeming user is an already logged in user or a user who is
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# activating their account who is redeeming the invite,
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# which is valid for existing users to be invited to topics or groups.
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if redeeming_user.present?
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@invited_user = redeeming_user
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return @invited_user
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end
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# If there was no logged in user then we must attempt to create
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# one based on the provided params.
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invited_user ||=
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InviteRedeemer.create_user_from_invite(
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email: email,
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invite: invite,
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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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)
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invited_user.send_welcome_message = false
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@invited_user = invited_user
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@invited_user
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end
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def process_invitation
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add_to_private_topics_if_invited
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add_user_to_groups
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send_welcome_message
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notify_invitee
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end
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def mark_invite_redeemed
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@invited_user_record = InvitedUser.create!(invite_id: invite.id, redeemed_at: Time.zone.now)
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if @invited_user_record.present?
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invite.with_lock("FOR UPDATE NOWAIT") do
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Invite.increment_counter(:redemption_count, invite.id)
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invite.save!
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end
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delete_duplicate_invites
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end
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@invited_user_record.present?
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end
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def add_to_private_topics_if_invited
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# Should not happen because of ensure_email_is_present!, but better to cover bases.
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return if email.blank?
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topic_ids =
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TopicInvite
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.joins(:invite)
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.joins(:topic)
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.where("topics.archetype = ?", Archetype.private_message)
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.where("invites.email = ?", email)
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.pluck(:topic_id)
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topic_ids.each do |id|
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if !TopicAllowedUser.exists?(user_id: invited_user.id, topic_id: id)
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TopicAllowedUser.create!(user_id: invited_user.id, topic_id: id)
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end
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end
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end
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def add_user_to_groups
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guardian = Guardian.new(invite.invited_by)
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new_group_ids = invite.groups.pluck(:id) - invited_user.group_users.pluck(:group_id)
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new_group_ids.each do |id|
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group = Group.find_by(id: id)
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if guardian.can_edit_group?(group)
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invited_user.group_users.create!(group_id: group.id)
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GroupActionLogger.new(invite.invited_by, group).log_add_user_to_group(invited_user)
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DiscourseEvent.trigger(:user_added_to_group, invited_user, group, automatic: false)
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end
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end
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end
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def send_welcome_message
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@invited_user_record.update!(user_id: invited_user.id)
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invited_user.send_welcome_message = true
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end
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def notify_invitee
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return if invite.invited_by.blank?
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invite.invited_by.notifications.create!(
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notification_type: Notification.types[:invitee_accepted],
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data: { display_username: invited_user.username }.to_json,
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)
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end
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def delete_duplicate_invites
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# Should not happen because of ensure_email_is_present!, but better to cover bases.
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return if email.blank?
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Invite
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.where("invites.max_redemptions_allowed = 1")
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.joins("LEFT JOIN invited_users ON invites.id = invited_users.invite_id")
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.where("invited_users.user_id IS NULL")
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.where("invites.email = ? AND invites.id != ?", email, invite.id)
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.delete_all
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end
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end
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