first commit

wp-content/plugins/contact-form-7/modules/stripe/api.php

@@ -0,0 +1,191 @@
+<?php
+
+/**
+ * Class for the Stripe API.
+ *
+ * @link https://docs.stripe.com/api
+ */
+class WPCF7_Stripe_API {
+
+	const api_version = '2022-11-15';
+	const partner_id = 'pp_partner_HHbvqLh1AaO7Am';
+	const app_name = 'WordPress Contact Form 7';
+	const app_url = 'https://contactform7.com/stripe-integration/';
+
+	private $secret;
+
+
+	/**
+	 * Constructor.
+	 *
+	 * @param string $secret Secret key.
+	 */
+	public function __construct( $secret ) {
+		$this->secret = $secret;
+	}
+
+
+	/**
+	 * Sends a debug information for a remote request to the PHP error log.
+	 *
+	 * @param string $url URL to retrieve.
+	 * @param array $request Request arguments.
+	 * @param array|WP_Error $response The response or WP_Error on failure.
+	 */
+	private function log( $url, $request, $response ) {
+		wpcf7_log_remote_request( $url, $request, $response );
+	}
+
+
+	/**
+	 * Returns default set of HTTP request headers used for Stripe API.
+	 *
+	 * @link https://docs.stripe.com/building-plugins#setappinfo
+	 *
+	 * @return array An associative array of headers.
+	 */
+	private function default_headers() {
+		$app_info = array(
+			'name' => self::app_name,
+			'partner_id' => self::partner_id,
+			'url' => self::app_url,
+			'version' => WPCF7_VERSION,
+		);
+
+		$ua = array(
+			'lang' => 'php',
+			'lang_version' => PHP_VERSION,
+			'application' => $app_info,
+		);
+
+		$headers = array(
+			'Authorization' => sprintf( 'Bearer %s', $this->secret ),
+			'Stripe-Version' => self::api_version,
+			'X-Stripe-Client-User-Agent' => wp_json_encode( $ua ),
+			'User-Agent' => sprintf(
+				'%1$s/%2$s (%3$s)',
+				self::app_name,
+				WPCF7_VERSION,
+				self::app_url
+			),
+		);
+
+		return $headers;
+	}
+
+
+	/**
+	 * Creates a Payment Intent.
+	 *
+	 * @link https://docs.stripe.com/api/payment_intents/create
+	 *
+	 * @param string|array $args Optional. Arguments to control behavior.
+	 * @return array|bool An associative array if 200 OK, false otherwise.
+	 */
+	public function create_payment_intent( $args = '' ) {
+		$args = wp_parse_args( $args, array(
+			'amount' => 0,
+			'currency' => '',
+			'receipt_email' => '',
+		) );
+
+		if ( ! is_email( $args['receipt_email'] ) ) {
+			unset( $args['receipt_email'] );
+		}
+
+		$endpoint = 'https://api.stripe.com/v1/payment_intents';
+
+		$request = array(
+			'headers' => $this->default_headers(),
+			'body' => $args,
+		);
+
+		$response = wp_remote_post( sanitize_url( $endpoint ), $request );
+
+		if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {
+			if ( WP_DEBUG ) {
+				$this->log( $endpoint, $request, $response );
+			}
+
+			return false;
+		}
+
+		$response_body = wp_remote_retrieve_body( $response );
+		$response_body = json_decode( $response_body, true );
+
+		return $response_body;
+	}
+
+
+	/**
+	 * Retrieves a Payment Intent.
+	 *
+	 * @link https://docs.stripe.com/api/payment_intents/retrieve
+	 *
+	 * @param string $id Payment Intent identifier.
+	 * @return array|bool An associative array if 200 OK, false otherwise.
+	 */
+	public function retrieve_payment_intent( $id ) {
+		$endpoint = sprintf(
+			'https://api.stripe.com/v1/payment_intents/%s',
+			urlencode( $id )
+		);
+
+		$request = array(
+			'headers' => $this->default_headers(),
+		);
+
+		$response = wp_remote_get( sanitize_url( $endpoint ), $request );
+
+		if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {
+			if ( WP_DEBUG ) {
+				$this->log( $endpoint, $request, $response );
+			}
+
+			return false;
+		}
+
+		$response_body = wp_remote_retrieve_body( $response );
+		$response_body = json_decode( $response_body, true );
+
+		return $response_body;
+	}
+
+
+	/**
+	 * Updates a Payment Intent.
+	 *
+	 * @link https://docs.stripe.com/api/payment_intents/update
+	 *
+	 * @param string $id Payment Intent identifier.
+	 * @param array $parameters Parameters.
+	 * @return array|bool An associative array if 200 OK, false otherwise.
+	 */
+	public function update_payment_intent( $id, $parameters ) {
+		$endpoint = sprintf(
+			'https://api.stripe.com/v1/payment_intents/%s',
+			urlencode( $id )
+		);
+
+		$request = array(
+			'headers' => $this->default_headers(),
+			'body' => wp_parse_args( $parameters, array() ),
+		);
+
+		$response = wp_remote_post( sanitize_url( $endpoint ), $request );
+
+		if ( 200 !== wp_remote_retrieve_response_code( $response ) ) {
+			if ( WP_DEBUG ) {
+				$this->log( $endpoint, $request, $response );
+			}
+
+			return false;
+		}
+
+		$response_body = wp_remote_retrieve_body( $response );
+		$response_body = json_decode( $response_body, true );
+
+		return $response_body;
+	}
+
+}

wp-content/plugins/contact-form-7/modules/stripe/index.asset.php

@@ -0,0 +1,6 @@
+<?php
+
+return array(
+	'dependencies' => array(),
+	'version' => WPCF7_VERSION,
+);

wp-content/plugins/contact-form-7/modules/stripe/index.js

@@ -0,0 +1 @@
+document.addEventListener("DOMContentLoaded",(e=>{const t=()=>{const e=document.querySelectorAll("form.wpcf7-form .wpcf7-stripe");for(let t=0;t<e.length;t++){let r=e[t];r.querySelector("button").disabled=!0;let i=document.createElement("span");i.setAttribute("class","wpcf7-not-valid-tip"),i.insertAdjacentText("beforeend","This form includes a payment widget that requires a modern browser to work."),r.appendChild(i)}};if(void 0===window.wpcf7_stripe)return console.error("window.wpcf7_stripe is not defined."),void t();if("function"!=typeof window.Stripe)return console.error("window.Stripe is not defined."),void t();if("function"!=typeof wpcf7.submit)return console.error("wpcf7.submit is not defined."),void t();const r=Stripe(wpcf7_stripe.publishable_key),i=r.elements();document.addEventListener("wpcf7submit",(e=>{const t=e.detail.unitTag,s=`${t}-ve-stripe-card-element`,n=document.querySelector(`#${t} form`),o=n.closest(".wpcf7").querySelector(".screen-reader-response"),d=n.querySelector(".wpcf7-stripe .wpcf7-form-control-wrap"),c=n.querySelector(".wpcf7-stripe button.first"),a=n.querySelector(".wpcf7-stripe button.second"),l=n.querySelector('[name="_wpcf7_stripe_payment_intent"]');if(!l)return;l.setAttribute("value","");const u=e=>{const t=o.querySelector("ul"),r=t.querySelector(`li#${s}`);r&&r.remove();const i=document.createElement("li");i.setAttribute("id",s),i.insertAdjacentText("beforeend",e.message),t.appendChild(i)},p=e=>{const t=d.querySelector(".wpcf7-form-control");t.classList.add("wpcf7-not-valid"),t.setAttribute("aria-describedby",s);const r=document.createElement("span");r.setAttribute("class","wpcf7-not-valid-tip"),r.setAttribute("aria-hidden","true"),r.insertAdjacentText("beforeend",e.message),d.appendChild(r),d.querySelectorAll("[aria-invalid]").forEach((e=>{e.setAttribute("aria-invalid","true")})),t.closest(".use-floating-validation-tip")&&(t.addEventListener("focus",(e=>{r.setAttribute("style","display: none")})),r.addEventListener("mouseover",(e=>{r.setAttribute("style","display: none")})))},f=()=>{o.querySelectorAll(`ul li#${s}`).forEach((e=>{e.remove()})),d.querySelectorAll(".wpcf7-not-valid-tip").forEach((e=>{e.remove()})),d.querySelectorAll("[aria-invalid]").forEach((e=>{e.setAttribute("aria-invalid","false")})),d.querySelectorAll(".wpcf7-form-control").forEach((e=>{e.removeAttribute("aria-describedby"),e.classList.remove("wpcf7-not-valid")}))};if("payment_required"===e.detail.status){const s=e.detail.apiResponse.stripe.payment_intent;s.id&&l.setAttribute("value",s.id);const o=i.getElement("card")||i.create("card");o.mount(`#${t} .wpcf7-stripe .card-element`),o.clear(),d.classList.remove("hidden"),c.classList.add("hidden"),a.classList.remove("hidden"),a.disabled=!0,o.addEventListener("change",(e=>{if(f(),e.error){const t={message:e.error.message};u(t),p(t),a.disabled=!0}else a.disabled=!1})),a.addEventListener("click",(e=>{f(),a.disabled=!0,n.classList.add("submitting"),wpcf7.blocked||r.confirmCardPayment(s.client_secret,{payment_method:{card:o}}).then((e=>{if(e.error){e.error.decline_code&&["fraudulent","lost_card","merchant_blacklist","pickup_card","restricted_card","security_violation","service_not_allowed","stolen_card","transaction_not_allowed"].includes(e.error.decline_code)&&(wpcf7.blocked=!0),n.classList.remove("submitting");const t={message:e.error.message};u(t),p(t)}else"succeeded"===e.paymentIntent.status&&wpcf7.submit(n)}))}))}else d.classList.add("hidden"),c.classList.remove("hidden"),a.classList.add("hidden"),["mail_sent","mail_failed"].includes(e.detail.status)&&(c.disabled=!0)}))}));

wp-content/plugins/contact-form-7/modules/stripe/service.php

@@ -0,0 +1,300 @@
+<?php
+
+if ( ! class_exists( 'WPCF7_Service' ) ) {
+	return;
+}
+
+class WPCF7_Stripe extends WPCF7_Service {
+
+	private static $instance;
+	private $api_keys;
+
+
+	public static function get_instance() {
+		if ( empty( self::$instance ) ) {
+			self::$instance = new self();
+		}
+
+		return self::$instance;
+	}
+
+
+	private function __construct() {
+		$option = WPCF7::get_option( 'stripe' );
+
+		if (
+			isset( $option['api_keys']['publishable'] ) and
+			isset( $option['api_keys']['secret'] )
+		) {
+			$this->api_keys = array(
+				'publishable' => $option['api_keys']['publishable'],
+				'secret' => $option['api_keys']['secret'],
+			);
+		}
+	}
+
+
+	public function get_title() {
+		return __( 'Stripe', 'contact-form-7' );
+	}
+
+
+	public function is_active() {
+		return (bool) $this->get_api_keys();
+	}
+
+
+	public function api() {
+		if ( $this->is_active() ) {
+			$api = new WPCF7_Stripe_API( $this->api_keys['secret'] );
+			return $api;
+		}
+	}
+
+
+	public function get_api_keys() {
+		return $this->api_keys;
+	}
+
+
+	public function get_categories() {
+		return array( 'payments' );
+	}
+
+
+	public function icon() {
+	}
+
+
+	public function link() {
+		echo wp_kses_data( wpcf7_link(
+			'https://stripe.com/',
+			'stripe.com'
+		) );
+	}
+
+
+	protected function menu_page_url( $args = '' ) {
+		$args = wp_parse_args( $args, array() );
+
+		$url = menu_page_url( 'wpcf7-integration', false );
+		$url = add_query_arg( array( 'service' => 'stripe' ), $url );
+
+		if ( ! empty( $args ) ) {
+			$url = add_query_arg( $args, $url );
+		}
+
+		return $url;
+	}
+
+
+	protected function save_data() {
+		WPCF7::update_option( 'stripe', array(
+			'api_keys' => $this->api_keys,
+		) );
+	}
+
+
+	protected function reset_data() {
+		$this->api_keys = null;
+		$this->save_data();
+	}
+
+
+	public function load( $action = '' ) {
+		if (
+			'setup' === $action and
+			'POST' === wpcf7_superglobal_server( 'REQUEST_METHOD' )
+		) {
+			check_admin_referer( 'wpcf7-stripe-setup' );
+
+			if ( ! empty( $_POST['reset'] ) ) {
+				$this->reset_data();
+				$redirect_to = $this->menu_page_url( 'action=setup' );
+			} else {
+				$publishable = wpcf7_superglobal_post( 'publishable' );
+				$secret = wpcf7_superglobal_post( 'secret' );
+
+				if ( $publishable and $secret ) {
+					$this->api_keys = array(
+						'publishable' => $publishable,
+						'secret' => $secret,
+					);
+
+					$this->save_data();
+
+					$redirect_to = $this->menu_page_url( array(
+						'message' => 'success',
+					) );
+				} else {
+					$redirect_to = $this->menu_page_url( array(
+						'action' => 'setup',
+						'message' => 'invalid',
+					) );
+				}
+			}
+
+			wp_safe_redirect( $redirect_to );
+			exit();
+		}
+	}
+
+
+	public function admin_notice( $message = '' ) {
+		if ( 'invalid' === $message ) {
+			wp_admin_notice(
+				__( '<strong>Error:</strong> Invalid key values.', 'contact-form-7' ),
+				array( 'type' => 'error' )
+			);
+		}
+
+		if ( 'success' === $message ) {
+			wp_admin_notice(
+				__( 'Settings saved.', 'contact-form-7' ),
+				array( 'type' => 'success' )
+			);
+		}
+	}
+
+
+	public function display( $action = '' ) {
+		$formatter = new WPCF7_HTMLFormatter( array(
+			'allowed_html' => array_merge( wpcf7_kses_allowed_html(), array(
+				'form' => array(
+					'action' => true,
+					'method' => true,
+				),
+			) ),
+		) );
+
+		$formatter->append_start_tag( 'p' );
+
+		$formatter->append_preformatted(
+			esc_html( __( 'Stripe is a simple and powerful way to accept payments online. Stripe has no setup fees, no monthly fees, and no hidden costs. Millions of businesses rely on Stripe&#8217;s software tools to accept payments securely and expand globally.', 'contact-form-7' ) )
+		);
+
+		$formatter->end_tag( 'p' );
+
+		$formatter->append_start_tag( 'p' );
+		$formatter->append_start_tag( 'strong' );
+
+		$formatter->append_preformatted(
+			wpcf7_link(
+				__( 'https://contactform7.com/stripe-integration/', 'contact-form-7' ),
+				__( 'Stripe integration', 'contact-form-7' )
+			)
+		);
+
+		$formatter->end_tag( 'p' );
+
+		if ( $this->is_active() ) {
+			$formatter->append_start_tag( 'p', array(
+				'class' => 'dashicons-before dashicons-yes',
+			) );
+
+			$formatter->append_preformatted(
+				esc_html( __( 'Stripe is active on this site.', 'contact-form-7' ) )
+			);
+
+			$formatter->end_tag( 'p' );
+		}
+
+		if ( 'setup' === $action ) {
+			$formatter->call_user_func( function () {
+				$this->display_setup();
+			} );
+		} elseif ( is_ssl() or WP_DEBUG ) {
+			$formatter->append_start_tag( 'p' );
+
+			$formatter->append_start_tag( 'a', array(
+				'href' => esc_url( $this->menu_page_url( 'action=setup' ) ),
+				'class' => 'button',
+			) );
+
+			$formatter->append_preformatted(
+				esc_html( __( 'Setup integration', 'contact-form-7' ) )
+			);
+
+			$formatter->end_tag( 'p' );
+		} else {
+			$formatter->append_start_tag( 'p', array(
+				'class' => 'dashicons-before dashicons-warning',
+			) );
+
+			$formatter->append_preformatted(
+				esc_html( __( 'Stripe is not available on this site. It requires an HTTPS-enabled site.', 'contact-form-7' ) )
+			);
+
+			$formatter->end_tag( 'p' );
+		}
+
+		$formatter->print();
+	}
+
+
+	private function display_setup() {
+		$api_keys = $this->get_api_keys();
+
+		if ( $api_keys ) {
+			$publishable = $api_keys['publishable'];
+			$secret = $api_keys['secret'];
+		} else {
+			$publishable = '';
+			$secret = '';
+		}
+
+?>
+<form method="post" action="<?php echo esc_url( $this->menu_page_url( 'action=setup' ) ); ?>">
+<?php wp_nonce_field( 'wpcf7-stripe-setup' ); ?>
+<table class="form-table">
+<tbody>
+<tr>
+	<th scope="row"><label for="publishable"><?php echo esc_html( __( 'Publishable Key', 'contact-form-7' ) ); ?></label></th>
+	<td><?php
+		if ( $this->is_active() ) {
+			echo esc_html( $publishable );
+			echo sprintf(
+				'<input type="hidden" value="%s" id="publishable" name="publishable" />',
+				esc_attr( $publishable )
+			);
+		} else {
+			echo sprintf(
+				'<input type="text" aria-required="true" value="%s" id="publishable" name="publishable" class="regular-text code" />',
+				esc_attr( $publishable )
+			);
+		}
+	?></td>
+</tr>
+<tr>
+	<th scope="row"><label for="secret"><?php echo esc_html( __( 'Secret Key', 'contact-form-7' ) ); ?></label></th>
+	<td><?php
+		if ( $this->is_active() ) {
+			echo esc_html( wpcf7_mask_password( $secret ) );
+			echo sprintf(
+				'<input type="hidden" value="%s" id="secret" name="secret" />',
+				esc_attr( $secret )
+			);
+		} else {
+			echo sprintf(
+				'<input type="text" aria-required="true" value="%s" id="secret" name="secret" class="regular-text code" />',
+				esc_attr( $secret )
+			);
+		}
+	?></td>
+</tr>
+</tbody>
+</table>
+<?php
+		if ( $this->is_active() ) {
+			submit_button(
+				_x( 'Remove Keys', 'API keys', 'contact-form-7' ),
+				'small', 'reset'
+			);
+		} else {
+			submit_button( __( 'Save Changes', 'contact-form-7' ) );
+		}
+?>
+</form>
+<?php
+	}
+}

wp-content/plugins/contact-form-7/modules/stripe/stripe.php

@@ -0,0 +1,406 @@
+<?php
+/**
+ * Stripe module main file
+ *
+ * @link https://contactform7.com/stripe-integration/
+ */
+
+wpcf7_include_module_file( 'stripe/service.php' );
+wpcf7_include_module_file( 'stripe/api.php' );
+
+
+add_action(
+	'wpcf7_init',
+	'wpcf7_stripe_register_service',
+	50, 0
+);
+
+/**
+ * Registers the Stripe service.
+ */
+function wpcf7_stripe_register_service() {
+	$integration = WPCF7_Integration::get_instance();
+
+	$integration->add_service( 'stripe',
+		WPCF7_Stripe::get_instance()
+	);
+}
+
+
+add_action(
+	'wpcf7_enqueue_scripts',
+	'wpcf7_stripe_enqueue_scripts',
+	10, 0
+);
+
+/**
+ * Enqueues scripts and styles for the Stripe module.
+ */
+function wpcf7_stripe_enqueue_scripts() {
+	$service = WPCF7_Stripe::get_instance();
+
+	if ( ! $service->is_active() ) {
+		return;
+	}
+
+	wp_enqueue_style( 'wpcf7-stripe',
+		wpcf7_plugin_url( 'modules/stripe/style.css' ),
+		array(), WPCF7_VERSION, 'all'
+	);
+
+	wp_register_script(
+		'stripe',
+		'https://js.stripe.com/v3/',
+		array(),
+		null,
+		array( 'in_footer' => true )
+	);
+
+	$assets = include wpcf7_plugin_path( 'modules/stripe/index.asset.php' );
+
+	$assets = wp_parse_args( $assets, array(
+		'dependencies' => array(),
+		'version' => WPCF7_VERSION,
+	) );
+
+	wp_enqueue_script(
+		'wpcf7-stripe',
+		wpcf7_plugin_url( 'modules/stripe/index.js' ),
+		array_merge(
+			$assets['dependencies'],
+			array(
+				'wp-polyfill',
+				'contact-form-7',
+				'stripe',
+			)
+		),
+		$assets['version'],
+		array( 'in_footer' => true )
+	);
+
+	$api_keys = $service->get_api_keys();
+
+	if ( $api_keys['publishable'] ) {
+		wp_add_inline_script( 'wpcf7-stripe',
+			sprintf(
+				'var wpcf7_stripe = %s;',
+				wp_json_encode( array(
+					'publishable_key' => $api_keys['publishable'],
+				), JSON_PRETTY_PRINT )
+			),
+			'before'
+		);
+	}
+}
+
+
+add_filter(
+	'wpcf7_skip_spam_check',
+	'wpcf7_stripe_skip_spam_check',
+	10, 2
+);
+
+/**
+ * Skips the spam check if it is not necessary.
+ *
+ * @return bool True if the spam check is not necessary.
+ */
+function wpcf7_stripe_skip_spam_check( $skip_spam_check, $submission ) {
+	$service = WPCF7_Stripe::get_instance();
+
+	if ( ! $service->is_active() ) {
+		return $skip_spam_check;
+	}
+
+	$pi_id = (string) wpcf7_superglobal_post( '_wpcf7_stripe_payment_intent' );
+
+	if ( $pi_id ) {
+		$payment_intent = $service->api()->retrieve_payment_intent( $pi_id );
+
+		if (
+			isset( $payment_intent['metadata']['wpcf7_submission_timestamp'] )
+		) {
+			// This PI has already been used. Ignore.
+			return $skip_spam_check;
+		}
+
+		if (
+			isset( $payment_intent['status'] ) and
+			'succeeded' === $payment_intent['status']
+		) {
+			$submission->push( 'payment_intent', $pi_id );
+
+			$service->api()->update_payment_intent( $pi_id, array(
+				'metadata' => array_merge( $payment_intent['metadata'], array(
+					'wpcf7_submission_timestamp' => $submission->get_meta( 'timestamp' ),
+				) ),
+			) );
+		}
+	}
+
+	if (
+		! empty( $submission->pull( 'payment_intent' ) ) and
+		$submission->verify_posted_data_hash()
+	) {
+		$skip_spam_check = true;
+	}
+
+	return $skip_spam_check;
+}
+
+
+add_filter(
+	'wpcf7_spam',
+	'wpcf7_stripe_verify_payment_intent',
+	6, 2
+);
+
+/**
+ * Verifies submitted Stripe Payment Intent ID.
+ */
+function wpcf7_stripe_verify_payment_intent( $spam, $submission ) {
+	$service = WPCF7_Stripe::get_instance();
+
+	if ( ! $service->is_active() ) {
+		return $spam;
+	}
+
+	$pi_id = (string) wpcf7_superglobal_post( '_wpcf7_stripe_payment_intent' );
+
+	if ( $pi_id ) {
+		$payment_intent = $service->api()->retrieve_payment_intent( $pi_id );
+
+		if (
+			! $payment_intent or
+			isset( $payment_intent['metadata']['wpcf7_submission_timestamp'] )
+		) {
+			$spam = true;
+
+			$submission->add_spam_log( array(
+				'agent' => 'stripe',
+				'reason' => __(
+					'Invalid Stripe Payment Intent ID detected.',
+					'contact-form-7'
+				),
+			) );
+		}
+	}
+
+	return $spam;
+}
+
+
+add_action(
+	'wpcf7_before_send_mail',
+	'wpcf7_stripe_before_send_mail',
+	10, 3
+);
+
+/**
+ * Creates Stripe's Payment Intent.
+ */
+function wpcf7_stripe_before_send_mail( $contact_form, &$abort, $submission ) {
+	$service = WPCF7_Stripe::get_instance();
+
+	if ( ! $service->is_active() ) {
+		return;
+	}
+
+	$tags = $contact_form->scan_form_tags( array( 'type' => 'stripe' ) );
+
+	if ( ! $tags ) {
+		return;
+	}
+
+	if ( ! empty( $submission->pull( 'payment_intent' ) ) ) {
+		return;
+	}
+
+	$tag = $tags[0];
+	$amount = $tag->get_option( 'amount', 'int', true );
+	$currency = $tag->get_option( 'currency', '[a-zA-Z]{3}', true );
+
+	$payment_intent_params = apply_filters(
+		'wpcf7_stripe_payment_intent_parameters',
+		array(
+			'amount' => $amount ? absint( $amount ) : null,
+			'currency' => $currency ? strtolower( $currency ) : null,
+			'receipt_email' => $submission->get_posted_data( 'your-email' ),
+		)
+	);
+
+	$payment_intent = $service->api()->create_payment_intent(
+		$payment_intent_params
+	);
+
+	if ( $payment_intent ) {
+		$submission->add_result_props( array(
+			'stripe' => array(
+				'payment_intent' => array(
+					'id' => $payment_intent['id'],
+					'client_secret' => $payment_intent['client_secret'],
+				),
+			),
+		) );
+
+		$submission->set_status( 'payment_required' );
+
+		$submission->set_response(
+			__( 'Payment is required. Please pay by credit card.', 'contact-form-7' )
+		);
+	}
+
+	$abort = true;
+}
+
+
+/**
+ * Returns payment link URL.
+ *
+ * @param string $pi_id Payment Intent ID.
+ * @return string The URL.
+ */
+function wpcf7_stripe_get_payment_link( $pi_id ) {
+	return sprintf(
+		'https://dashboard.stripe.com/payments/%s',
+		urlencode( $pi_id )
+	);
+}
+
+
+add_filter(
+	'wpcf7_special_mail_tags',
+	'wpcf7_stripe_smt',
+	10, 4
+);
+
+/**
+ * Registers the [_stripe_payment_link] special mail-tag.
+ */
+function wpcf7_stripe_smt( $output, $tag_name, $html, $mail_tag = null ) {
+	if ( '_stripe_payment_link' === $tag_name ) {
+		$submission = WPCF7_Submission::get_instance();
+
+		$pi_id = $submission->pull( 'payment_intent' );
+
+		if ( ! empty( $pi_id ) ) {
+			$output = wpcf7_stripe_get_payment_link( $pi_id );
+		}
+	}
+
+	return $output;
+}
+
+
+add_filter(
+	'wpcf7_flamingo_inbound_message_parameters',
+	'wpcf7_stripe_add_flamingo_inbound_message_params',
+	10, 1
+);
+
+/**
+ * Adds Stripe-related meta data to Flamingo Inbound Message parameters.
+ */
+function wpcf7_stripe_add_flamingo_inbound_message_params( $args ) {
+	$submission = WPCF7_Submission::get_instance();
+
+	$pi_id = $submission->pull( 'payment_intent' );
+
+	if ( empty( $pi_id ) ) {
+		return $args;
+	}
+
+	$pi_link = wpcf7_stripe_get_payment_link( $pi_id );
+
+	$meta = (array) $args['meta'];
+
+	$meta['stripe_payment_link'] = $pi_link;
+
+	$args['meta'] = $meta;
+
+	return $args;
+}
+
+
+add_action(
+	'wpcf7_init',
+	'wpcf7_add_form_tag_stripe',
+	10, 0
+);
+
+/**
+ * Registers the stripe form-tag handler.
+ */
+function wpcf7_add_form_tag_stripe() {
+	wpcf7_add_form_tag(
+		'stripe',
+		'wpcf7_stripe_form_tag_handler',
+		array(
+			'display-block' => true,
+			'singular' => true,
+		)
+	);
+}
+
+
+/**
+ * Defines the stripe form-tag handler.
+ *
+ * @return string HTML content that replaces a stripe form-tag.
+ */
+function wpcf7_stripe_form_tag_handler( $tag ) {
+	$card_element = sprintf(
+		'<div %s></div>',
+		wpcf7_format_atts( array(
+			'class' => 'card-element wpcf7-form-control',
+			'aria-invalid' => 'false',
+		) )
+	);
+
+	$card_element = sprintf(
+		'<div class="wpcf7-form-control-wrap hidden">%s</div>',
+		$card_element
+	);
+
+	$button_1_label = __( 'Proceed to checkout', 'contact-form-7' );
+
+	if ( isset( $tag->values[0] ) ) {
+		$button_1_label = trim( $tag->values[0] );
+	}
+
+	$button_1 = sprintf(
+		'<button %1$s>%2$s</button>',
+		wpcf7_format_atts( array(
+			'type' => 'submit',
+			'class' => 'first',
+		) ),
+		esc_html( $button_1_label )
+	);
+
+	$button_2_label = __( 'Complete payment', 'contact-form-7' );
+
+	if ( isset( $tag->values[1] ) ) {
+		$button_2_label = trim( $tag->values[1] );
+	}
+
+	$button_2 = sprintf(
+		'<button %1$s>%2$s</button>',
+		wpcf7_format_atts( array(
+			'type' => 'button',
+			'class' => 'second hidden',
+		) ),
+		esc_html( $button_2_label )
+	);
+
+	$buttons = sprintf(
+		'<span class="buttons has-spinner">%1$s %2$s</span>',
+		$button_1, $button_2
+	);
+
+	return sprintf(
+		'<div class="wpcf7-stripe">%1$s %2$s %3$s</div>',
+		$card_element,
+		$buttons,
+		'<input type="hidden" name="_wpcf7_stripe_payment_intent" value="" />'
+	);
+}

wp-content/plugins/contact-form-7/modules/stripe/style.css

@@ -0,0 +1,18 @@
+.wpcf7 .wpcf7-stripe .wpcf7-form-control-wrap {
+	margin: .6em 0;
+}
+
+.wpcf7 .wpcf7-stripe .wpcf7-form-control {
+	display: block;
+	background: #f6f7f7;
+	padding: 12px 12px;
+	border: 1px solid #787c82;
+}
+
+.wpcf7 .wpcf7-stripe button:disabled {
+	cursor: not-allowed;
+}
+
+.wpcf7 .wpcf7-stripe .hidden {
+	display: none;
+}