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<?php
namespace WPForms\Integrations\Stripe\Admin;
use WPForms\Integrations\Stripe\Api\WebhooksManager;
use WPForms\Integrations\Stripe\Helpers;
use Stripe\Account;
/**
* Stripe Connect functionality.
*
* @since 1.8.2
*/
class Connect {
/**
* WPForms Stripe OAuth URL.
*
* @since 1.8.2
*/
const WPFORMS_URL = 'https://wpforms.com/oauth/stripe-connect';
/**
* Stripe live/test account objects.
*
* @since 1.8.2
*
* @var array
*/
protected $accounts = [];
/**
* Webhooks manager.
*
* @since 1.8.4
*
* @var WebhooksManager
*/
private $webhooks_manager;
/**
* Initialize.
*
* @since 1.8.2
*
* @return Connect
*/
public function init() {
$this->webhooks_manager = new WebhooksManager();
$this->hooks();
return $this;
}
/**
* Hooks.
*
* @since 1.8.2
*/
private function hooks() {
add_action( 'admin_init', [ $this, 'handle_oauth_handshake' ] );
}
/**
* Handle Stripe Connect OAuth handshake and save Stripe keys.
*
* @since 1.8.2
*/
public function handle_oauth_handshake() {
if ( ! wpforms_current_user_can() || ! isset( $_GET['stripe_connect'] ) || $_GET['stripe_connect'] !== 'complete' ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
return;
}
$state = isset( $_GET['state'] ) ? sanitize_text_field( wp_unslash( $_GET['state'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( empty( $state ) ) {
return;
}
$credentials = $this->fetch_stripe_credentials( $state );
$required_keys = [ 'stripe_user_id', 'stripe_publishable_key', 'access_token', 'refresh_token', 'live_mode' ];
if ( 0 !== count( array_diff( $required_keys, array_keys( $credentials ) ) ) ) {
return;
}
$mode = empty( $credentials['live_mode'] ) ? 'test' : 'live';
$this->set_connected_user_id( $credentials['stripe_user_id'], $mode );
$this->set_current_mode( $mode );
Helpers::set_stripe_key( $credentials['stripe_publishable_key'], 'publishable', $mode );
Helpers::set_stripe_key( $credentials['access_token'], 'secret', $mode );
$this->update_account_meta( $credentials['stripe_user_id'], $mode );
$this->set_connected_account_country( $mode );
$this->webhooks_manager->connect();
$settings_url = $this->get_payments_settings_url();
wp_safe_redirect( $settings_url );
exit;
}
/**
* Fetch Stripe credentials from https://wpforms.com.
*
* @since 1.8.2
*
* @param string $state Anonymous autogenerated ID to safely fetch Stripe credentials.
*
* @return array
*/
protected function fetch_stripe_credentials( $state ) {
$response = wp_remote_post(
self::WPFORMS_URL,
[
'body' => [
'action' => 'credentials',
'state' => $state,
],
]
);
if ( is_wp_error( $response ) ) {
return [];
}
$body = wpforms_json_decode( wp_remote_retrieve_body( $response ), true );
return is_array( $body ) ? $body : [];
}
/**
* Fetch Stripe Account from Stripe.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*
* @return null|Account
*/
protected function fetch_stripe_account( $mode = '' ) {
$api_key = Helpers::get_stripe_key( 'secret', $mode );
if ( ! $api_key ) {
return null;
}
try {
$account = Account::retrieve( null, sanitize_text_field( $api_key ) );
} catch ( \Exception $e ) {
$account = null;
}
return $account;
}
/**
* Update connected account meta.
*
* @since 1.8.2
*
* @param string $account_id Account ID.
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*/
public function update_account_meta( $account_id = '', $mode = '' ) {
if ( ! $mode ) {
$mode = Helpers::get_stripe_mode();
}
// Stripe API has limited update method for live accounts only.
if ( $mode !== 'live' ) {
return;
}
if ( ! $account_id ) {
$account_id = $this->get_connected_user_id( $mode );
}
// Return early if no connected account.
if ( ! $account_id ) {
return;
}
$licence_type = wpforms_get_license_type();
$metadata = [
'wpforms_stripe' => Helpers::is_addon_active() ? 'addon' : 'core',
'wpforms_type' => wpforms()->is_pro() ? 'pro' : 'lite',
'wpforms_license' => $licence_type ? $licence_type : 'lite',
];
try {
Account::update( $account_id, [ 'metadata' => $metadata ], Helpers::get_auth_opts() );
} catch ( \Exception $e ) {
wpforms_log(
'Unable to update connected Stripe account meta.',
$e->getMessage(),
[
'type' => [ 'payment', 'error' ],
]
);
}
}
/**
* Generate random alphanumeric token string.
* Token length is always 32 chars.
*
* @since 1.8.2
*
* @return string
*/
public function generate_random_token() {
$random = false;
if ( function_exists( 'openssl_random_pseudo_bytes' ) ) {
$strong_result = false; // This has been added as argument #2 ($strong_result) cannot be passed by reference.
$random = openssl_random_pseudo_bytes( 16, $strong_result );
}
if ( $random === false ) {
return md5( wp_rand() );
}
return bin2hex( $random );
}
/**
* Set fetched Stripe Account for caching purposes.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*/
protected function set_connected_account( $mode = '' ) {
$user_id = $this->get_connected_user_id( $mode );
if ( ! $user_id ) {
return;
}
$account = $this->fetch_stripe_account( $mode );
$this->accounts[ $mode ] = null;
if ( ! isset( $account->id ) || $account->id !== $user_id ) {
return;
}
$this->accounts[ $mode ] = $account;
}
/**
* Get cached Stripe Account or fetch it from Stripe.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*
* @return null|Account
*/
public function get_connected_account( $mode = '' ) {
$mode = Helpers::validate_stripe_mode( $mode );
if ( empty( $this->accounts ) || ( is_array( $this->accounts ) && ! array_key_exists( $mode, $this->accounts ) ) ) {
$this->set_connected_account( $mode );
}
if ( ! empty( $this->accounts[ $mode ] ) ) {
return $this->accounts[ $mode ];
}
return null;
}
/**
* Save connected user id to an option.
*
* @since 1.8.2
*
* @param string $user_id User id to set.
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*
* @return bool
*/
protected function set_connected_user_id( $user_id, $mode = '' ) {
$mode = Helpers::validate_stripe_mode( $mode );
return update_option( "wpforms_stripe_{$mode}_connect_user_id", sanitize_text_field( $user_id ) );
}
/**
* Get saved Stripe Connect user id from DB.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*
* @return string
*/
public function get_connected_user_id( $mode = '' ) {
$mode = Helpers::validate_stripe_mode( $mode );
$user_id = get_option( "wpforms_stripe_{$mode}_connect_user_id", '' );
/**
* User ID associated with the Stripe account.
*
* @since 1.8.2
*
* @param string $user_id User ID.
*/
return (string) apply_filters( 'wpforms_stripe_admin_connect_get_connected_user_id', $user_id ); // phpcs:ignore WPForms.PHP.ValidateHooks.InvalidHookName
}
/**
* Get Stripe Account name.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*
* @return string
*/
public function get_connected_account_name( $mode = '' ) {
$account = $this->get_connected_account( $mode );
if ( isset( $account->display_name ) ) {
return $account->display_name;
}
if ( isset( $account->settings, $account->settings->dashboard->display_name ) ) {
return $account->settings->dashboard->display_name;
}
return '';
}
/**
* Set Stripe mode.
*
* @since 1.8.4
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*/
private function set_current_mode( $mode ) {
$key = 'stripe-test-mode';
$settings = (array) get_option( 'wpforms_settings', [] );
$settings[ $key ] = $mode === 'test';
update_option( 'wpforms_settings', $settings );
}
/**
* Set Stripe Account country.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*/
private function set_connected_account_country( $mode = '' ) {
$account = $this->get_connected_account( $mode );
if ( ! isset( $account->country ) ) {
return;
}
update_option( "wpforms_stripe_{$mode}_account_country", strtolower( $account->country ) );
}
/**
* Get Stripe Connect button URL.
*
* @since 1.8.2
*
* @param string $mode Stripe mode (e.g. 'live' or 'test').
*
* @return string
*/
public function get_connect_with_stripe_url( $mode = '' ) {
$mode = Helpers::validate_stripe_mode( $mode );
$settings_url = $this->get_payments_settings_url();
return add_query_arg(
[
'action' => 'init',
'live_mode' => absint( $mode === 'live' ),
'state' => $this->generate_random_token(),
'site_url' => rawurlencode( $settings_url ),
],
self::WPFORMS_URL
);
}
/**
* Get "Payments" settings page URL.
*
* @since 1.8.2
*
* @return string
*/
private function get_payments_settings_url() {
return add_query_arg(
[
'page' => 'wpforms-settings',
'view' => 'payments',
],
admin_url( 'admin.php' )
);
}
}
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