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<?php |
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/** |
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* Email Access |
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* |
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* @package Give |
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* @subpackage Classes/Give_Email_Access |
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* @copyright Copyright (c) 2016, WordImpress |
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* @license https://opensource.org/licenses/gpl-license GNU Public License |
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* @since 1.4 |
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*/ |
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// Exit if accessed directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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/** |
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* Give_Email_Access class |
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* |
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* This class handles email access, allowing donors access to their donation w/o logging in; |
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* |
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* Based on the work from Matt Gibbs - https://github.com/FacetWP/edd-no-logins |
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* |
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* @since 1.0 |
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*/ |
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class Give_Email_Access { |
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/** |
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* Token exists |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @var bool |
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*/ |
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public $token_exists = false; |
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/** |
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* Token email |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @var bool |
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*/ |
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public $token_email = false; |
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/** |
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* Token |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @var bool |
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*/ |
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public $token = false; |
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/** |
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* Error |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @var string |
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*/ |
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public $error = ''; |
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/** |
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* Verify throttle |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @var |
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*/ |
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public $verify_throttle; |
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/** |
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* Limit throttle |
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* |
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* @since 1.8.17 |
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* @access public |
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* |
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* @var |
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*/ |
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public $limit_throttle; |
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/** |
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* Verify expiration |
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* |
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* @since 1.0 |
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* @access private |
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* |
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* @var string |
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*/ |
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private $token_expiration; |
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/** |
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* Class Constructor |
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* |
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* Set up the Give Email Access Class. |
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* |
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* @since 1.0 |
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* @access public |
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*/ |
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public function __construct() { |
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// get it started |
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add_action( 'init', array( $this, 'init' ) ); |
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} |
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/** |
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* Init |
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* |
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* Register defaults and filters |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @return void |
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*/ |
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public function init() { |
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// Bail Out, if user is logged in. |
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if ( is_user_logged_in() ) { |
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return; |
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} |
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// Are db columns setup? |
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$column_exists = Give()->donors->does_column_exist( 'token' ); |
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if ( ! $column_exists ) { |
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$this->create_columns(); |
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} |
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// Timeouts. |
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$this->verify_throttle = apply_filters( 'give_nl_verify_throttle', 300 ); |
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$this->limit_throttle = apply_filters( 'give_nl_limit_throttle', 3 ); |
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$this->token_expiration = apply_filters( 'give_nl_token_expiration', 7200 ); |
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// Setup login. |
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$this->check_for_token(); |
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if ( $this->token_exists ) { |
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add_filter( 'give_can_view_receipt', '__return_true' ); |
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add_filter( 'give_user_pending_verification', '__return_false' ); |
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add_filter( 'give_get_users_donations_args', array( $this, 'users_donations_args' ) ); |
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} |
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} |
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/** |
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* Prevent email spamming. |
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* |
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* @param int $donor_id Donor ID. |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @return bool |
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*/ |
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public function can_send_email( $donor_id ) { |
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$donor = Give()->donors->get_donor_by( 'id', $donor_id ); |
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if ( is_object( $donor ) ) { |
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$email_throttle_count = (int) give_get_meta( $donor_id, '_give_email_throttle_count', true ); |
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$cache_key = "give_cache_email_throttle_limit_exhausted_{$donor_id}"; |
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if ( |
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$email_throttle_count < $this->limit_throttle && |
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true !== Give_Cache::get( $cache_key ) |
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) { |
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give_update_meta( $donor_id, '_give_email_throttle_count', $email_throttle_count + 1 ); |
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} else { |
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give_update_meta( $donor_id, '_give_email_throttle_count', 0 ); |
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Give_Cache::set( $cache_key, true, $this->verify_throttle ); |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* Send the user's token |
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* |
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* @param int $donor_id Donor id. |
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* @param string $email Donor email. |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @return bool |
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*/ |
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public function send_email( $donor_id, $email ) { |
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return apply_filters( 'give_email-access_email_notification', $donor_id, $email ); |
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} |
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/** |
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* Has the user authenticated? |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @return bool |
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*/ |
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public function check_for_token() { |
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$token = isset( $_GET['give_nl'] ) ? give_clean( $_GET['give_nl'] ) : ''; |
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// Check for cookie. |
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if ( empty( $token ) ) { |
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$token = isset( $_COOKIE['give_nl'] ) ? give_clean( $_COOKIE['give_nl'] ) : ''; |
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} |
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// Must have a token. |
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if ( ! empty( $token ) ) { |
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if ( ! $this->is_valid_token( $token ) ) { |
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if ( ! $this->is_valid_verify_key( $token ) ) { |
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return false; |
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} |
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} |
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// Set Receipt Access Session. |
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Give()->session->set( 'receipt_access', true ); |
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$this->token_exists = true; |
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// Set cookie. |
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$lifetime = current_time( 'timestamp' ) + Give()->session->set_expiration_time(); |
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@setcookie( 'give_nl', $token, $lifetime, COOKIEPATH, COOKIE_DOMAIN, false ); |
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return true; |
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} |
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} |
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/** |
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* Is this a valid token? |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @param $token string The token. |
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* |
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* @return bool |
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*/ |
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public function is_valid_token( $token ) { |
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global $wpdb; |
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// Make sure token isn't expired. |
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$expires = date( 'Y-m-d H:i:s', time() - $this->token_expiration ); |
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$email = $wpdb->get_var( |
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$wpdb->prepare( "SELECT email FROM {$wpdb->donors} WHERE verify_key = %s AND verify_throttle >= %s LIMIT 1", $token, $expires ) |
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); |
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if ( ! empty( $email ) ) { |
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$this->token_email = $email; |
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$this->token = $token; |
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return true; |
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} |
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// Set error only if email access form isn't being submitted. |
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if ( ! isset( $_POST['give_email'] ) && ! isset( $_POST['_wpnonce'] ) ) { |
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give_set_error( 'give_email_token_expired', apply_filters( 'give_email_token_expired_message', __( 'Your access token has expired. Please request a new one below:', 'give' ) ) ); |
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} |
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return false; |
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} |
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/** |
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* Add the verify key to DB |
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* |
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* @param int $donor_id Donor id. |
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* @param string $email Donor email. |
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* @param string $verify_key The verification key. |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @return void |
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*/ |
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public function set_verify_key( $donor_id, $email, $verify_key ) { |
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global $wpdb; |
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$now = date( 'Y-m-d H:i:s' ); |
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// Insert or update? |
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$row_id = (int) $wpdb->get_var( |
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$wpdb->prepare( "SELECT id FROM {$wpdb->donors} WHERE id = %d LIMIT 1", $donor_id ) |
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); |
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// Update. |
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if ( ! empty( $row_id ) ) { |
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$wpdb->query( |
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$wpdb->prepare( "UPDATE {$wpdb->donors} SET verify_key = %s, verify_throttle = %s WHERE id = %d LIMIT 1", $verify_key, $now, $row_id ) |
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); |
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} // Insert. |
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else { |
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$wpdb->query( |
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$wpdb->prepare( "INSERT INTO {$wpdb->donors} ( verify_key, verify_throttle) VALUES (%s, %s)", $verify_key, $now ) |
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); |
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} |
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} |
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/** |
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* Is this a valid verify key? |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @param $token string The token. |
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* |
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* @return bool |
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*/ |
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public function is_valid_verify_key( $token ) { |
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/* @var WPDB $wpdb */ |
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global $wpdb; |
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// See if the verify_key exists. |
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$row = $wpdb->get_row( |
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$wpdb->prepare( "SELECT id, email FROM {$wpdb->donors} WHERE verify_key = %s LIMIT 1", $token ) |
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); |
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$now = date( 'Y-m-d H:i:s' ); |
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// Set token and remove verify key. |
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if ( ! empty( $row ) ) { |
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$wpdb->query( |
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$wpdb->prepare( "UPDATE {$wpdb->donors} SET verify_key = '', token = %s, verify_throttle = %s WHERE id = %d LIMIT 1", $token, $now, $row->id ) |
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); |
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$this->token_email = $row->email; |
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$this->token = $token; |
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return true; |
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} |
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return false; |
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} |
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/** |
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* Users donations args |
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* |
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* Force Give to find donations by email, not user ID. |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @param $args array User Donations arguments. |
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* |
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* @return mixed |
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*/ |
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public function users_donations_args( $args ) { |
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$args['user'] = $this->token_email; |
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return $args; |
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} |
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/** |
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* Create required columns |
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* |
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* Create the necessary columns for email access |
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* |
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* @since 1.0 |
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* @access public |
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* |
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* @return void |
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*/ |
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public function create_columns() { |
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global $wpdb; |
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// Create columns in donors table. |
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$wpdb->query( "ALTER TABLE {$wpdb->donors} ADD `token` VARCHAR(255) CHARACTER SET utf8 NOT NULL, ADD `verify_key` VARCHAR(255) CHARACTER SET utf8 NOT NULL AFTER `token`, ADD `verify_throttle` DATETIME NOT NULL AFTER `verify_key`" ); |
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} |
380
|
|
|
|
381
|
|
|
} |
382
|
|
|
|