'',
'product_permalink' => false,
'placeholder' => 'XXXXXXXX-XXXXXXXX-XXXXXXXX-XXXXXXXX',
'is_password' => false,
);
public function display() {
if ( !empty( $this->owner->postID ) ) {
return;
}
/* Get the license */
$license = esc_attr( sanitize_key( $this->getValue() ) );
$this->echoOptionHeader();
printf( '',
$this->getID(),
$this->settings['placeholder'],
$this->getID(),
$this->settings['is_password'] ? 'password' : 'text',
$license );
if(strlen($license) > 0) {
/* Get the license activation status */
$status = get_transient( "{$this->settings['plugin_name']}_license_status" );
/* For debug only, forces transient to be false so it will always check the license key. */
$status = false;
/* If no transient is found or it is expired to check the license again. */
if ( false == $status ) {
$status = $this->check( $license );
}
switch ( $status ) {
case 'valid':
?>echoOptionFooter();
}
public function check($license, $action = 'check_license') {
if ( empty( $license ) || !$this->settings['product_permalink'] ) {
return false;
}
/* Sanitize the key. */
$license = trim( sanitize_key( $license ) );
/* Set license validity time, after this it will be checked again */
$check_time = YEAR_IN_SECONDS;
$api_params = array(
'product_permalink' => $this->settings['product_permalink'],
'license_key' => $license,
'increment_uses_count' => (($action == 'use_license') ? 'true' : 'false'),
);
$response = wp_remote_post( add_query_arg( $api_params, $this->settings['server'] ), array( 'timeout' => 15 ) );
/* Check for request error. */
if ( is_wp_error( $response ) ) {
return false;
}
/* Decode license data. */
$license_data = json_decode( wp_remote_retrieve_body( $response ) );
/* If the remote server didn't return a valid response we just return an error and don't set any transients so that activation will be tried again next time the option is saved */
if ( ! is_object( $license_data ) || empty( $license_data ) || ! isset( $license_data->success ) ) {
return 'no_response';
}
/* If there success is false or there is no purchase data the license is invalid. */
if( $license_data->success === false || !isset($license_data->purchase) ) {
set_transient( "{$this->settings['plugin_name']}_license_status", 'invalid', $check_time );
return 'invalid';
}
if( $license_data->purchase->chargebacked || $license_data->purchase->refunded ) {
set_transient( "{$this->settings['plugin_name']}_license_status", 'invalid_refund', $check_time );
return 'invalid_refund';
}
/* Is this license allowed to be used on ulimited domains? If so, bypass everything else (at this point we know the license is valid) and return valid */
if( isset( $license_data->purchase->variants) && strcasecmp($license_data->purchase->variants, '(unlimited domains)') === 0) {
set_transient( "{$this->settings['plugin_name']}_license_status", 'valid_unlimited', $check_time );
delete_site_transient( 'update_plugins' ); //Delete the update_plugins transient to force an update check as the user can now update
return 'valid_unlimited';
}
/* If there is domain data they are only licensed to update the plugin while it is installed on a specific domain. Check the domain to make sure it matches. */
if( isset( $license_data->purchase->custom_fields[0] ) ) {
//We don't know if the URL has www. or not & parse_url requires http:// so let's format the domain a little
$licenseDomain = str_ireplace(array('domain: ', 'http://', 'https://'), '', trim($license_data->purchase->custom_fields[0]));
$licenseDomain = preg_replace("/(www\.)/is", "", $licenseDomain);
$licenseDomain = "http://" . $licenseDomain;
$licenseDomain = parse_url($licenseDomain, PHP_URL_HOST);
$thisDomain = parse_url(get_site_url(), PHP_URL_HOST);
//Compare the domain & the expected domain. If they are not the same (binary safe) the license is not for this domain.
if(strcasecmp($licenseDomain, $thisDomain) !== 0) {
set_transient( "{$this->settings['plugin_name']}_license_status", 'invalid_domain', $check_time );
return 'invalid_domain';
} else {
set_transient( "{$this->settings['plugin_name']}_license_status", 'valid', $check_time );
delete_site_transient( 'update_plugins' ); //Delete the update_plugins transient to force an update check as the user can now update
return 'valid';
}
}
return 'unknown_error';
}
}