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<?php
class SwpmStripeBuyNowIpnHandler {
public function __construct() {
$this->handle_stripe_ipn();
}
public function handle_stripe_ipn() {
SwpmLog::log_simple_debug( 'Stripe Buy Now IPN received. Processing request...', true );
// SwpmLog::log_simple_debug(print_r($_REQUEST, true), true);//Useful for debugging purpose
if( !isset($_REQUEST['item_number']) || !isset($_REQUEST['item_price']) ){
SwpmLog::log_simple_debug( 'The Stripe Buy Now IPN request URL was accessed, but it is missing some required parameters. Aborting...', false );
wp_die( esc_html( 'The Stripe Buy Now IPN request URL was accessed, but it is missing some required parameters. Aborting...' ) );
}
// Include the Stripe library.
SwpmMiscUtils::load_stripe_lib();
// Read and sanitize the request parameters.
$button_id = sanitize_text_field( $_REQUEST['item_number'] );
$button_id = absint( $button_id );
$button_title = sanitize_text_field( $_REQUEST['item_name'] );
$payment_amount = sanitize_text_field( $_REQUEST['item_price'] );
$currency_code = sanitize_text_field( $_REQUEST['currency_code'] );
$zero_cents = unserialize( SIMPLE_WP_MEMBERSHIP_STRIPE_ZERO_CENTS );
if ( in_array( $currency_code, $zero_cents ) ) {
$price_in_cents = $payment_amount;
} else {
$price_in_cents = $payment_amount * 100;// The amount (in cents). This value is used in Stripe API.
}
$stripe_token = isset( $_POST['stripeToken'] ) ? sanitize_text_field( stripslashes ( $_POST['stripeToken'] ) ) : '';
$stripe_token_type = isset( $_POST['stripeTokenType'] ) ? sanitize_text_field( stripslashes ( $_POST['stripeTokenType'] ) ) : '';
$stripe_email = filter_input( INPUT_POST, 'stripeEmail', FILTER_SANITIZE_EMAIL );
// Retrieve the CPT for this button
$button_cpt = get_post( $button_id );
if ( ! $button_cpt ) {
// Fatal error. Could not find this payment button post object.
SwpmLog::log_simple_debug( 'Fatal Error! Failed to retrieve the payment button post object for the given button ID: ' . $button_id, false );
wp_die( esc_html( sprintf( 'Fatal Error! Payment button (ID: %d) does not exist. This request will fail.', $button_id ) ) );
}
$membership_level_id = get_post_meta( $button_id, 'membership_level_id', true );
// Validate and verify some of the main values.
$true_payment_amount = get_post_meta( $button_id, 'payment_amount', true );
$true_payment_amount = apply_filters( 'swpm_payment_amount_filter', $true_payment_amount, $button_id );
if ( $payment_amount != $true_payment_amount ) {
// Fatal error. Payment amount may have been tampered with.
$error_msg = 'Fatal Error! Received payment amount (' . $payment_amount . ') does not match with the original amount (' . $true_payment_amount . ')';
SwpmLog::log_simple_debug( $error_msg, false );
wp_die( esc_html( $error_msg ) );
}
$true_currency_code = get_post_meta( $button_id, 'payment_currency', true );
if ( $currency_code != $true_currency_code ) {
// Fatal error. Currency code may have been tampered with.
$error_msg = 'Fatal Error! Received currency code (' . $currency_code . ') does not match with the original code (' . $true_currency_code . ')';
SwpmLog::log_simple_debug( $error_msg, false );
wp_die( esc_html( $error_msg ) );
}
// Validation passed. Go ahead with the charge.
// Sandbox and other settings
$settings = SwpmSettings::get_instance();
$sandbox_enabled = $settings->get_value( 'enable-sandbox-testing' );
//API keys
$api_keys = SwpmMiscUtils::get_stripe_api_keys_from_payment_button( $button_id, ! $sandbox_enabled );
// Set secret API key in the Stripe library
\Stripe\Stripe::setApiKey( $api_keys['secret'] );
// Get the credit card details submitted by the form
$token = $stripe_token;
// Create the charge on Stripe's servers - this will charge the user's card
try {
$charge = \Stripe\Charge::create(
array(
'amount' => $price_in_cents, // Amount in cents
'currency' => strtolower( $currency_code ),
'source' => $token,
'description' => $button_title,
'receipt_email' => $stripe_email,
)
);
} catch ( \Stripe\Error\Card $e ) {
// The card has been declined
SwpmLog::log_simple_debug( 'Stripe Charge Error! The card has been declined. ' . $e->getMessage(), false );
$body = $e->getJsonBody();
$error = $body['error'];
$error_string = print_r( $error, true );
SwpmLog::log_simple_debug( 'Error details: ' . $error_string, false );
wp_die( esc_html( 'Stripe Charge Error! Card charge has been declined. ' . $e->getMessage() . $error_string ) );
}
// Everything went ahead smoothly with the charge.
SwpmLog::log_simple_debug( 'Stripe Buy Now charge successful.', true );
// Grab the charge ID and set it as the transaction ID.
$txn_id = $charge->id;// $charge->balance_transaction;
// The charge ID can be used to retrieve the transaction details using hte following call.
// \Stripe\Charge::retrieve($charge->id);
$custom = sanitize_text_field( $_REQUEST['custom'] );
$custom_var = SwpmTransactions::parse_custom_var( $custom );
$swpm_id = isset( $custom_var['swpm_id'] ) ? $custom_var['swpm_id'] : '';
// Create the $ipn_data array.
$ipn_data = array();
$ipn_data['mc_gross'] = $payment_amount;
$ipn_data['first_name'] = '';
$ipn_data['last_name'] = '';
$ipn_data['payer_email'] = $stripe_email;
$ipn_data['membership_level'] = $membership_level_id;
$ipn_data['txn_id'] = $txn_id;
$ipn_data['subscr_id'] = $txn_id;/* Set the txn_id as subscriber_id so it is similar to PayPal buy now. Also, it can connect to the profile in the "payments" menu. */
$ipn_data['swpm_id'] = $swpm_id;
$ipn_data['ip'] = $custom_var['user_ip'];
$ipn_data['custom'] = $custom;
$ipn_data['gateway'] = 'stripe';
$ipn_data['status'] = 'completed';
$ipn_data['address_street'] = '';
$ipn_data['address_city'] = '';
$ipn_data['address_state'] = '';
$ipn_data['address_zipcode'] = '';
$ipn_data['country'] = '';
// Handle the membership signup related tasks.
swpm_handle_subsc_signup_stand_alone( $ipn_data, $membership_level_id, $txn_id, $swpm_id );
// Save the transaction record
SwpmTransactions::save_txn_record( $ipn_data );
SwpmLog::log_simple_debug( 'Transaction data saved.', true );
// Trigger the stripe IPN processed action hook (so other plugins can can listen for this event).
do_action( 'swpm_stripe_ipn_processed', $ipn_data );
do_action( 'swpm_payment_ipn_processed', $ipn_data );
// Redirect the user to the return URL (or to the homepage if a return URL is not specified for this payment button).
$return_url = get_post_meta( $button_id, 'return_url', true );
if ( empty( $return_url ) ) {
$return_url = SIMPLE_WP_MEMBERSHIP_SITE_HOME_URL;
}
SwpmLog::log_simple_debug( 'Redirecting customer to: ' . $return_url, true );
SwpmLog::log_simple_debug( 'End of Stripe Buy Now IPN processing.', true, true );
SwpmMiscUtils::redirect_to_url( $return_url );
}
}
$swpm_stripe_buy_ipn = new SwpmStripeBuyNowIpnHandler();