| 1 |
<?php |
| 2 |
// @codingStandardsIgnoreFile |
| 3 |
/** |
| 4 |
* s2Member's PayPal Checkout Webhook handler (REST). |
| 5 |
* |
| 6 |
* Receives PayPal webhooks, verifies authenticity, translates events into legacy |
| 7 |
* PayPal-IPN-like vars/txn_type equivalents, and proxies into s2Member's existing |
| 8 |
* PayPal notify handler (via a proxy key) to preserve provisioning behavior. |
| 9 |
* |
| 10 |
* - Signature verification: verify-webhook-signature. |
| 11 |
* - Idempotent processing: duplicate deliveries are safely ignored (and logged). |
| 12 |
* - Admin reachability test: optional GET-based "OK" response for diagnostics. |
| 13 |
* |
| 14 |
* Note: PayPal's Webhooks Simulator is best treated as connectivity-only; real sandbox |
| 15 |
* transactions are the reliable end-to-end verification path. |
| 16 |
* |
| 17 |
* @package s2Member\PayPal |
| 18 |
* @since 260112 |
| 19 |
*/ |
| 20 |
if(!defined('WPINC')) // MUST have WordPress. |
| 21 |
exit('Do not access this file directly.'); |
| 22 |
|
| 23 |
if(!class_exists('c_ws_plugin__s2member_paypal_webhook_in')) |
| 24 |
{ |
| 25 |
class c_ws_plugin__s2member_paypal_webhook_in |
| 26 |
{ |
| 27 |
public static function paypal_webhook() |
| 28 |
{ |
| 29 |
if(empty($_REQUEST['s2member_paypal_webhook'])) |
| 30 |
return; |
| 31 |
|
| 32 |
//260218 Allow webhook processing even when Checkout buttons are disabled (if creds+webhook id exist). |
| 33 |
if(!c_ws_plugin__s2member_paypal_utilities::paypal_checkout_webhook_processing_is_enabled()) |
| 34 |
{ |
| 35 |
status_header(404); |
| 36 |
exit(); |
| 37 |
} |
| 38 |
// Admin-only reachability test endpoint (does not validate signatures). |
| 39 |
if(!empty($_GET['s2member_paypal_webhook_test']) && current_user_can('manage_options') |
| 40 |
&& !empty($_GET['_wpnonce']) && wp_verify_nonce((string)$_GET['_wpnonce'], 's2member_ppco_webhook_test')) |
| 41 |
{ |
| 42 |
$env_site = c_ws_plugin__s2member_paypal_utilities::paypal_checkout_is_sandbox() ? 'sandbox' : 'live'; |
| 43 |
$env_webhook = (!empty($_GET['ppco_webhook_env']) && $_GET['ppco_webhook_env'] === 'sandbox') ? 'sandbox' : 'live'; |
| 44 |
|
| 45 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 46 |
'ppco' => 'webhook', |
| 47 |
'env_setting' => $env_site, |
| 48 |
'env_webhook' => $env_webhook, |
| 49 |
'event' => 'endpoint_test_ok', |
| 50 |
'host' => !empty($_SERVER['HTTP_HOST']) ? (string)$_SERVER['HTTP_HOST'] : '', |
| 51 |
'uri' => !empty($_SERVER['REQUEST_URI']) ? (string)$_SERVER['REQUEST_URI'] : '', |
| 52 |
'ssl' => is_ssl() ? '1' : '0', |
| 53 |
)); |
| 54 |
|
| 55 |
status_header(200); |
| 56 |
header('Content-Type: text/plain; charset=UTF-8'); |
| 57 |
|
| 58 |
$lines = array( |
| 59 |
'SUCCESS', |
| 60 |
'', |
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's2Member PayPal Webhook Endpoint (reachability test)', |
| 62 |
'Environment setting: '.$env_site, |
| 63 |
'Environment webhook: '.$env_webhook, |
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'SSL: '.(is_ssl() ? 'yes' : 'no'), |
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'Host: '.(!empty($_SERVER['HTTP_HOST']) ? (string)$_SERVER['HTTP_HOST'] : ''), |
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'URI: '.(!empty($_SERVER['REQUEST_URI']) ? (string)$_SERVER['REQUEST_URI'] : ''), |
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'Timestamp (UTC): '.gmdate('Y-m-d H:i:s'), |
| 68 |
'', |
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'Note: This is a reachability-only test. Real PayPal webhooks are POST requests and require signature verification.', |
| 70 |
); |
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|
| 72 |
echo implode("\n", $lines); |
| 73 |
exit(); |
| 74 |
} |
| 75 |
|
| 76 |
if(strtoupper((string)$_SERVER['REQUEST_METHOD']) !== 'POST') |
| 77 |
{ |
| 78 |
status_header(405); |
| 79 |
exit(); |
| 80 |
} |
| 81 |
|
| 82 |
$raw_body = file_get_contents('php://input'); |
| 83 |
$event = json_decode((string)$raw_body, true); |
| 84 |
|
| 85 |
$headers = array(); |
| 86 |
if(function_exists('getallheaders')) |
| 87 |
foreach((array)getallheaders() as $_k => $_v) |
| 88 |
$headers[strtolower((string)$_k)] = (string)$_v; |
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|
| 90 |
// Fallback for hosts without getallheaders(). |
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foreach(array( |
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'HTTP_PAYPAL_TRANSMISSION_ID' => 'paypal-transmission-id', |
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'HTTP_PAYPAL_TRANSMISSION_TIME' => 'paypal-transmission-time', |
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'HTTP_PAYPAL_TRANSMISSION_SIG' => 'paypal-transmission-sig', |
| 95 |
'HTTP_PAYPAL_CERT_URL' => 'paypal-cert-url', |
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'HTTP_PAYPAL_AUTH_ALGO' => 'paypal-auth-algo', |
| 97 |
) as $_server => $_key) |
| 98 |
if(empty($headers[$_key]) && !empty($_SERVER[$_server])) |
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$headers[$_key] = (string)$_SERVER[$_server]; |
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|
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//260206 Detect environment from inbound PayPal cert URL. |
| 102 |
$cert_url = !empty($headers['paypal-cert-url']) ? (string)$headers['paypal-cert-url'] : ''; |
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$env_site = c_ws_plugin__s2member_paypal_utilities::paypal_checkout_is_sandbox() ? 'sandbox' : 'live'; |
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|
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$cert_host = $cert_url ? (string)parse_url($cert_url, PHP_URL_HOST) : ''; |
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$env_webhook = 'unknown'; |
| 107 |
|
| 108 |
if($cert_host && preg_match('/(^|\.)paypal\.com$/i', $cert_host)) |
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$env_webhook = (stripos($cert_host, 'sandbox') !== false || strpos($cert_url, 'sandbox') !== false) ? 'sandbox' : 'live'; |
| 110 |
|
| 111 |
if(!is_array($event) || empty($event['id']) || empty($event['event_type'])) |
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{ |
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c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 114 |
'ppco' => 'webhook', |
| 115 |
'env_setting' => $env_site, |
| 116 |
'env_webhook' => $env_webhook, |
| 117 |
'event' => 'invalid_payload', |
| 118 |
)); |
| 119 |
status_header(400); |
| 120 |
exit(); |
| 121 |
} |
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|
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$verified = c_ws_plugin__s2member_paypal_utilities::paypal_checkout_verify_webhook_signature($event, $raw_body, $headers); |
| 124 |
if(!$verified) |
| 125 |
{ |
| 126 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 127 |
'ppco' => 'webhook', |
| 128 |
'env_setting'=> $env_site, |
| 129 |
'env_webhook'=> $env_webhook, |
| 130 |
'event' => 'signature_failed', |
| 131 |
'event_id' => (string)$event['id'], |
| 132 |
'event_type' => (string)$event['event_type'], |
| 133 |
'tx_id' => !empty($headers['paypal-transmission-id']) ? (string)$headers['paypal-transmission-id'] : '', |
| 134 |
'tx_time' => !empty($headers['paypal-transmission-time']) ? (string)$headers['paypal-transmission-time'] : '', |
| 135 |
'auth_algo' => !empty($headers['paypal-auth-algo']) ? (string)$headers['paypal-auth-algo'] : '', |
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'cert_url' => !empty($headers['paypal-cert-url']) ? (string)$headers['paypal-cert-url'] : '', |
| 137 |
)); |
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status_header(400); |
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exit(); |
| 140 |
} |
| 141 |
|
| 142 |
$event_id = (string)$event['id']; |
| 143 |
$event_type = (string)$event['event_type']; |
| 144 |
|
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//260406 Use option-based dedupe/lock markers for PayPal Checkout because transients were not reliable enough on some sites. |
| 146 |
$event_lock_option = 's2m_ppco_wh_lock_'.md5($event_id); |
| 147 |
$event_done_option = 's2m_ppco_wh_done_'.md5($event_id); |
| 148 |
$event_lock_ttl = 900; |
| 149 |
$event_done_ttl = 6 * HOUR_IN_SECONDS; |
| 150 |
$txn_done_ttl = DAY_IN_SECONDS; |
| 151 |
$subscr_done_ttl = DAY_IN_SECONDS; |
| 152 |
|
| 153 |
//260406 Occasionally clean up expired PayPal Checkout dedupe markers; the transient only throttles cleanup frequency. |
| 154 |
c_ws_plugin__s2member_paypal_utilities::dedupe_markers_cleanup('s2m_ppco_dedupe_cleanup_throttle', array( |
| 155 |
array('prefix' => 's2m_ppco_wh_done_', 'ttl' => $event_done_ttl), |
| 156 |
array('prefix' => 's2m_ppco_txn_done_', 'ttl' => $txn_done_ttl), |
| 157 |
array('prefix' => 's2m_ppco_subscr_done_', 'ttl' => $subscr_done_ttl), |
| 158 |
), 6 * HOUR_IN_SECONDS); |
| 159 |
|
| 160 |
$event_done_time = c_ws_plugin__s2member_paypal_utilities::dedupe_done_time_get($event_done_option, $event_done_ttl); |
| 161 |
if($event_done_time > 0) |
| 162 |
{ |
| 163 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 164 |
'ppco' => 'webhook', |
| 165 |
'env_setting'=> $env_site, |
| 166 |
'env_webhook'=> $env_webhook, |
| 167 |
'event' => 'duplicate_event', |
| 168 |
'action' => 'ignored', |
| 169 |
'note' => 'Duplicate webhook delivery (event_id already processed).', |
| 170 |
'event_id' => $event_id, |
| 171 |
'event_type' => $event_type, |
| 172 |
)); |
| 173 |
status_header(200); |
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exit(); |
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} |
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|
| 177 |
if(!c_ws_plugin__s2member_paypal_utilities::dedupe_lock_acquire($event_lock_option, $event_lock_ttl)) |
| 178 |
{ |
| 179 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 180 |
'ppco' => 'webhook', |
| 181 |
'env_setting'=> $env_site, |
| 182 |
'env_webhook'=> $env_webhook, |
| 183 |
'event' => 'duplicate_event', |
| 184 |
'action' => 'ignored', |
| 185 |
'note' => 'Duplicate webhook delivery (event_id already processing).', |
| 186 |
'event_id' => $event_id, |
| 187 |
'event_type' => $event_type, |
| 188 |
)); |
| 189 |
status_header(200); |
| 190 |
exit(); |
| 191 |
} |
| 192 |
|
| 193 |
$resource = !empty($event['resource']) && is_array($event['resource']) ? $event['resource'] : array(); |
| 194 |
|
| 195 |
$paypal = array(); |
| 196 |
$paypal['charset'] = 'utf-8'; |
| 197 |
$paypal['custom'] = !empty($_SERVER['HTTP_HOST']) ? (string)$_SERVER['HTTP_HOST'] : (string)parse_url(home_url('/'), PHP_URL_HOST); |
| 198 |
|
| 199 |
$subscr_id = ''; |
| 200 |
$txn_id = ''; |
| 201 |
|
| 202 |
$txn_done_option = ''; |
| 203 |
$subscr_done_option = ''; |
| 204 |
$subscr_handled_by_webhook = false; |
| 205 |
|
| 206 |
// Subscription lifecycle events. |
| 207 |
if(strpos($event_type, 'BILLING.SUBSCRIPTION.') === 0) |
| 208 |
{ |
| 209 |
if(!empty($resource['id'])) |
| 210 |
$subscr_id = (string)$resource['id']; |
| 211 |
|
| 212 |
if($subscr_id) |
| 213 |
$subscr_done_option = 's2m_ppco_subscr_done_'.md5($subscr_id); //260406 Match the checkout subscription-done option so webhook ACTIVATED/RE-ACTIVATED stays fallback-only. |
| 214 |
|
| 215 |
//260401 Treat CREATED as informational only, and let ACTIVATED/RE-ACTIVATED act only as a fallback when checkout has not already handled this Subscription. |
| 216 |
if($event_type === 'BILLING.SUBSCRIPTION.CREATED') |
| 217 |
{ |
| 218 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 219 |
'ppco' => 'webhook', |
| 220 |
'env_setting'=> $env_site, |
| 221 |
'env_webhook'=> $env_webhook, |
| 222 |
'event' => 'subscription_created', |
| 223 |
'event_id' => $event_id, |
| 224 |
'event_type' => $event_type, |
| 225 |
'subscr_id' => $subscr_id, |
| 226 |
)); |
| 227 |
|
| 228 |
//260406 Mark the webhook event done and release its lock for valid terminal events. |
| 229 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 230 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 231 |
|
| 232 |
status_header(200); |
| 233 |
exit(); |
| 234 |
} |
| 235 |
else if($event_type === 'BILLING.SUBSCRIPTION.ACTIVATED' || $event_type === 'BILLING.SUBSCRIPTION.RE-ACTIVATED') |
| 236 |
{ |
| 237 |
$subscr_done_time = ($subscr_done_option) ? c_ws_plugin__s2member_paypal_utilities::dedupe_done_time_get($subscr_done_option, $subscr_done_ttl) : 0; |
| 238 |
|
| 239 |
//260401 Ignore webhook activation when checkout already handled this Subscription; otherwise allow webhook activation as a fallback. |
| 240 |
if($subscr_done_option && $subscr_done_time > 0) |
| 241 |
{ |
| 242 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 243 |
'ppco' => 'webhook', |
| 244 |
'env_setting'=> $env_site, |
| 245 |
'env_webhook'=> $env_webhook, |
| 246 |
'event' => 'subscription_activation_ignored', |
| 247 |
'note' => 'Checkout already handled this Subscription; skipping webhook fallback activation.', |
| 248 |
'event_id' => $event_id, |
| 249 |
'event_type' => $event_type, |
| 250 |
'subscr_id' => $subscr_id, |
| 251 |
'option' => $subscr_done_option, |
| 252 |
)); |
| 253 |
|
| 254 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 255 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 256 |
|
| 257 |
status_header(200); |
| 258 |
exit(); |
| 259 |
} |
| 260 |
|
| 261 |
$paypal['txn_type'] = 'subscr_signup'; //260401 Keep webhook activation as a fallback to the legacy signup handler only when checkout did not already handle this Subscription. |
| 262 |
$paypal['payment_status'] = 'Completed'; |
| 263 |
|
| 264 |
$subscr_handled_by_webhook = true; |
| 265 |
} |
| 266 |
else if($event_type === 'BILLING.SUBSCRIPTION.UPDATED') |
| 267 |
$paypal['txn_type'] = 'subscr_modify'; |
| 268 |
else if($event_type === 'BILLING.SUBSCRIPTION.CANCELLED') |
| 269 |
$paypal['txn_type'] = 'subscr_cancel'; |
| 270 |
else if($event_type === 'BILLING.SUBSCRIPTION.SUSPENDED') |
| 271 |
$paypal['txn_type'] = 'recurring_payment_suspended_due_to_max_failed_payment'; |
| 272 |
else if($event_type === 'BILLING.SUBSCRIPTION.EXPIRED') |
| 273 |
$paypal['txn_type'] = 'subscr_eot'; |
| 274 |
else if($event_type === 'BILLING.SUBSCRIPTION.PAYMENT.FAILED') |
| 275 |
$paypal['txn_type'] = 'subscr_failed'; |
| 276 |
else |
| 277 |
{ |
| 278 |
// Ignore other BILLING.SUBSCRIPTION.* events. |
| 279 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 280 |
'ppco' => 'webhook', |
| 281 |
'env_setting'=> $env_site, |
| 282 |
'env_webhook'=> $env_webhook, |
| 283 |
'event' => 'ignored', |
| 284 |
'event_id' => $event_id, |
| 285 |
'event_type' => $event_type, |
| 286 |
)); |
| 287 |
|
| 288 |
//260406 Mark the webhook event done and release its lock for valid terminal events. |
| 289 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 290 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 291 |
|
| 292 |
status_header(200); |
| 293 |
exit(); |
| 294 |
} |
| 295 |
|
| 296 |
$paypal['subscr_id'] = $subscr_id; |
| 297 |
$paypal['txn_id'] = $event_id; // best-effort unique id |
| 298 |
|
| 299 |
// Help legacy notify logic resolve a user when signup vars are missing (migrations, etc.). |
| 300 |
$paypal['mp_id'] = $subscr_id; |
| 301 |
$paypal['recurring_payment_id'] = $subscr_id; |
| 302 |
|
| 303 |
// Best-effort payer email for logs/fallback logic. |
| 304 |
if(!empty($resource['subscriber']['email_address'])) |
| 305 |
$paypal['payer_email'] = (string)$resource['subscriber']['email_address']; |
| 306 |
|
| 307 |
// Enrich lifecycle events with stored signup vars so legacy notify handlers can match and set EOT properly. |
| 308 |
//!!! TO-DO: Deduplicate signup-vars enrichment logic (also used in PayPal Checkout proxy confirm flow). |
| 309 |
if(!empty($paypal['txn_type']) && $subscr_id |
| 310 |
&& in_array($paypal['txn_type'], array('subscr_signup', 'subscr_modify', 'subscr_cancel', 'subscr_eot', 'subscr_failed', 'recurring_payment_suspended_due_to_max_failed_payment'), true) |
| 311 |
&& ($user_id = c_ws_plugin__s2member_utils_users::get_user_id_with($subscr_id)) |
| 312 |
&& is_array($ipn_signup_vars = get_user_option('s2member_ipn_signup_vars', $user_id)) |
| 313 |
&& !empty($ipn_signup_vars['subscr_id']) && (string)$ipn_signup_vars['subscr_id'] === (string)$subscr_id |
| 314 |
) |
| 315 |
{ |
| 316 |
if(empty($paypal['item_number']) && !empty($ipn_signup_vars['item_number'])) |
| 317 |
$paypal['item_number'] = (string)$ipn_signup_vars['item_number']; |
| 318 |
|
| 319 |
if(empty($paypal['item_name']) && !empty($ipn_signup_vars['item_name'])) |
| 320 |
$paypal['item_name'] = (string)$ipn_signup_vars['item_name']; |
| 321 |
|
| 322 |
if(empty($paypal['period1']) && !empty($ipn_signup_vars['period1'])) |
| 323 |
$paypal['period1'] = (string)$ipn_signup_vars['period1']; |
| 324 |
|
| 325 |
if(empty($paypal['period3']) && !empty($ipn_signup_vars['period3'])) |
| 326 |
$paypal['period3'] = (string)$ipn_signup_vars['period3']; |
| 327 |
} |
| 328 |
} |
| 329 |
|
| 330 |
// Recurring payment events (PayPal often emits PAYMENT.SALE.COMPLETED for subscription payments). |
| 331 |
//260216 Add refund/reversal webhook support so refunds can trigger immediate EOT/demotion. |
| 332 |
//260226 !!! TO-DO: Consider handling PayPal dispute/chargeback webhooks (e.g., CUSTOMER.DISPUTE.*), since not all chargebacks map to SALE/CAPTURE reversal events. |
| 333 |
else if(in_array($event_type, array( |
| 334 |
'PAYMENT.SALE.COMPLETED', |
| 335 |
'PAYMENT.CAPTURE.COMPLETED', |
| 336 |
'PAYMENT.SALE.REFUNDED', |
| 337 |
'PAYMENT.CAPTURE.REFUNDED', |
| 338 |
'PAYMENT.SALE.REVERSED', |
| 339 |
'PAYMENT.CAPTURE.REVERSED', |
| 340 |
), true)) |
| 341 |
{ |
| 342 |
if(!empty($resource['billing_agreement_id'])) |
| 343 |
$subscr_id = (string)$resource['billing_agreement_id']; |
| 344 |
else if(!empty($resource['parent_payment'])) |
| 345 |
$subscr_id = (string)$resource['parent_payment']; // fallback (not always present) |
| 346 |
else if(!empty($resource['subscription_id'])) |
| 347 |
$subscr_id = (string)$resource['subscription_id']; |
| 348 |
else if(!empty($resource['supplementary_data']['related_ids']['billing_agreement_id'])) |
| 349 |
$subscr_id = (string)$resource['supplementary_data']['related_ids']['billing_agreement_id']; |
| 350 |
|
| 351 |
//260228 Ignore one-time sale/capture webhooks that have no subscription reference. |
| 352 |
if(!$subscr_id) |
| 353 |
{ |
| 354 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 355 |
'ppco' => 'webhook', |
| 356 |
'env_setting'=> $env_site, |
| 357 |
'env_webhook'=> $env_webhook, |
| 358 |
'event' => 'ignored_non_subscription_payment', |
| 359 |
'event_id' => $event_id, |
| 360 |
'event_type' => $event_type, |
| 361 |
'resource' => $resource, |
| 362 |
)); |
| 363 |
|
| 364 |
//260406 Mark the webhook event done and release its lock for valid terminal events. |
| 365 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 366 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 367 |
|
| 368 |
status_header(200); |
| 369 |
exit(); |
| 370 |
} |
| 371 |
|
| 372 |
$paypal['txn_type'] = 'subscr_payment'; |
| 373 |
|
| 374 |
if(strpos($event_type, '.REFUNDED') !== false) |
| 375 |
$paypal['payment_status'] = 'Refunded'; |
| 376 |
else if(strpos($event_type, '.REVERSED') !== false) |
| 377 |
$paypal['payment_status'] = 'Reversed'; |
| 378 |
else |
| 379 |
$paypal['payment_status'] = 'Completed'; |
| 380 |
|
| 381 |
if(!empty($resource['id'])) |
| 382 |
$txn_id = (string)$resource['id']; // original capture/sale id |
| 383 |
|
| 384 |
if(!empty($resource['amount']['total'])) |
| 385 |
$paypal['mc_gross'] = (string)$resource['amount']['total']; |
| 386 |
else if(!empty($resource['amount']['value'])) |
| 387 |
$paypal['mc_gross'] = (string)$resource['amount']['value']; |
| 388 |
|
| 389 |
if(!empty($resource['amount']['currency'])) |
| 390 |
$paypal['mc_currency'] = (string)$resource['amount']['currency']; |
| 391 |
else if(!empty($resource['amount']['currency_code'])) |
| 392 |
$paypal['mc_currency'] = (string)$resource['amount']['currency_code']; |
| 393 |
|
| 394 |
if(!empty($resource['payer']['payer_info']['email'])) |
| 395 |
$paypal['payer_email'] = (string)$resource['payer']['payer_info']['email']; |
| 396 |
else if(!empty($resource['payer']['email_address'])) |
| 397 |
$paypal['payer_email'] = (string)$resource['payer']['email_address']; |
| 398 |
|
| 399 |
$paypal['subscr_id'] = $subscr_id; |
| 400 |
|
| 401 |
//260216 Emulate IPN semantics for refund/reversal: parent_txn_id=original, txn_id=event delivery. |
| 402 |
if(!empty($paypal['payment_status']) && preg_match('/^(refunded|reversed|reversal)$/i', $paypal['payment_status'])) |
| 403 |
{ |
| 404 |
$paypal['parent_txn_id'] = $txn_id ? $txn_id : $event_id; |
| 405 |
$paypal['txn_id'] = $event_id; |
| 406 |
} |
| 407 |
else |
| 408 |
$paypal['txn_id'] = $txn_id ? $txn_id : $event_id; |
| 409 |
|
| 410 |
$paypal['mp_id'] = $subscr_id; |
| 411 |
$paypal['recurring_payment_id'] = $subscr_id; |
| 412 |
|
| 413 |
//260216 Enrich refund/reversal from stored signup vars so legacy handlers can demote immediately. |
| 414 |
if(!empty($paypal['payment_status']) && preg_match('/^(refunded|reversed|reversal)$/i', $paypal['payment_status']) |
| 415 |
&& $subscr_id |
| 416 |
&& ($user_id = c_ws_plugin__s2member_utils_users::get_user_id_with($subscr_id)) |
| 417 |
&& is_array($ipn_signup_vars = get_user_option('s2member_ipn_signup_vars', $user_id)) |
| 418 |
&& !empty($ipn_signup_vars['subscr_id']) && (string)$ipn_signup_vars['subscr_id'] === (string)$subscr_id |
| 419 |
) |
| 420 |
{ |
| 421 |
if(empty($paypal['item_number']) && !empty($ipn_signup_vars['item_number'])) |
| 422 |
$paypal['item_number'] = (string)$ipn_signup_vars['item_number']; |
| 423 |
|
| 424 |
if(empty($paypal['item_name']) && !empty($ipn_signup_vars['item_name'])) |
| 425 |
$paypal['item_name'] = (string)$ipn_signup_vars['item_name']; |
| 426 |
|
| 427 |
if(empty($paypal['period1']) && !empty($ipn_signup_vars['period1'])) |
| 428 |
$paypal['period1'] = (string)$ipn_signup_vars['period1']; |
| 429 |
|
| 430 |
if(empty($paypal['period3']) && !empty($ipn_signup_vars['period3'])) |
| 431 |
$paypal['period3'] = (string)$ipn_signup_vars['period3']; |
| 432 |
|
| 433 |
if(empty($paypal['payer_email']) && !empty($ipn_signup_vars['payer_email'])) |
| 434 |
$paypal['payer_email'] = (string)$ipn_signup_vars['payer_email']; |
| 435 |
} |
| 436 |
} |
| 437 |
else |
| 438 |
{ |
| 439 |
// Ignore for MVP. |
| 440 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 441 |
'ppco' => 'webhook', |
| 442 |
'env_setting'=> $env_site, |
| 443 |
'env_webhook'=> $env_webhook, |
| 444 |
'event' => 'ignored', |
| 445 |
'event_id' => $event_id, |
| 446 |
'event_type' => $event_type, |
| 447 |
)); |
| 448 |
|
| 449 |
//260406 Mark the webhook event done and release its lock for valid terminal events. |
| 450 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 451 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 452 |
|
| 453 |
status_header(200); |
| 454 |
exit(); |
| 455 |
} |
| 456 |
|
| 457 |
//260406 Idempotency per txn prevents different webhook event IDs from double-processing the same payment. |
| 458 |
if(!empty($paypal['txn_type'])) |
| 459 |
{ |
| 460 |
$txn_key = (string)$event_id; |
| 461 |
|
| 462 |
//260216 For refund/reversal, prefer idempotency on original payment id. |
| 463 |
if(!empty($paypal['parent_txn_id'])) |
| 464 |
$txn_key = (string)$paypal['parent_txn_id']; |
| 465 |
else if(!empty($paypal['txn_id'])) |
| 466 |
$txn_key = (string)$paypal['txn_id']; |
| 467 |
|
| 468 |
$txn_done_option = 's2m_ppco_txn_done_'.md5($paypal['txn_type'].'|'.$subscr_id.'|'.$txn_key); |
| 469 |
|
| 470 |
if($txn_key) |
| 471 |
{ |
| 472 |
$txn_done_time = c_ws_plugin__s2member_paypal_utilities::dedupe_done_time_get($txn_done_option, $txn_done_ttl); |
| 473 |
|
| 474 |
if($txn_done_time > 0) |
| 475 |
{ |
| 476 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 477 |
'ppco' => 'webhook', |
| 478 |
'env_setting'=> $env_site, |
| 479 |
'env_webhook'=> $env_webhook, |
| 480 |
'event' => 'duplicate_txn', |
| 481 |
'action' => 'ignored', |
| 482 |
'note' => 'Duplicate webhook delivery (txn_id already processed).', |
| 483 |
'event_id' => $event_id, |
| 484 |
'event_type' => $event_type, |
| 485 |
'subscr_id' => $subscr_id, |
| 486 |
'txn_id' => !empty($paypal['txn_id']) ? (string)$paypal['txn_id'] : '', |
| 487 |
'option' => $txn_done_option, |
| 488 |
)); |
| 489 |
|
| 490 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 491 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 492 |
|
| 493 |
status_header(200); |
| 494 |
exit(); |
| 495 |
} |
| 496 |
} |
| 497 |
} |
| 498 |
|
| 499 |
// Proxy into existing s2Member PayPal notify handler to reuse all provisioning/eot logic. |
| 500 |
$url = add_query_arg('s2member_paypal_notify', '1', home_url('/')); |
| 501 |
$post = array_merge($paypal, array( |
| 502 |
's2member_paypal_proxy' => 'paypal', |
| 503 |
's2member_paypal_proxy_use' => 'paypal_checkout_webhook', |
| 504 |
's2member_paypal_proxy_verification' => c_ws_plugin__s2member_paypal_utilities::paypal_proxy_key_gen(), |
| 505 |
)); |
| 506 |
|
| 507 |
$r = c_ws_plugin__s2member_utils_urls::remote($url, $post, array( |
| 508 |
'timeout' => 20, |
| 509 |
), true); |
| 510 |
|
| 511 |
if(!is_array($r)) |
| 512 |
$r = array('code' => 0, 'message' => 'request_failed', 'body' => ''); |
| 513 |
|
| 514 |
$code = !empty($r['code']) ? (int)$r['code'] : 0; |
| 515 |
|
| 516 |
if($code >= 200 && $code <= 299) |
| 517 |
{ |
| 518 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($event_done_option); |
| 519 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 520 |
|
| 521 |
if(!empty($txn_done_option)) |
| 522 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($txn_done_option); |
| 523 |
|
| 524 |
//260401 If webhook activation had to rescue this Subscription, mark it done so later activation webhooks are ignored. |
| 525 |
if($subscr_handled_by_webhook && !empty($subscr_done_option)) |
| 526 |
c_ws_plugin__s2member_paypal_utilities::dedupe_done_mark($subscr_done_option); |
| 527 |
|
| 528 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 529 |
'ppco' => 'webhook', |
| 530 |
'env_setting'=> $env_site, |
| 531 |
'env_webhook'=> $env_webhook, |
| 532 |
'event' => 'notify_proxy_response', |
| 533 |
'event_id' => $event_id, |
| 534 |
'event_type' => $event_type, |
| 535 |
'subscr_id' => $subscr_id, |
| 536 |
'txn_id' => $txn_id ? $txn_id : $event_id, |
| 537 |
'url' => $url, |
| 538 |
'code' => $code, |
| 539 |
'message' => !empty($r['message']) ? (string)$r['message'] : '', |
| 540 |
)); |
| 541 |
} |
| 542 |
else |
| 543 |
{ |
| 544 |
//260406 Release the in-flight webhook lock on failure so PayPal retries can proceed. |
| 545 |
c_ws_plugin__s2member_paypal_utilities::dedupe_lock_release($event_lock_option); |
| 546 |
|
| 547 |
c_ws_plugin__s2member_utils_logs::log_entry('paypal-checkout', array( |
| 548 |
'ppco' => 'webhook', |
| 549 |
'env_setting'=> $env_site, |
| 550 |
'env_webhook'=> $env_webhook, |
| 551 |
'event' => 'notify_proxy_failed', |
| 552 |
'event_id' => $event_id, |
| 553 |
'event_type' => $event_type, |
| 554 |
'subscr_id' => $subscr_id, |
| 555 |
'txn_id' => $txn_id ? $txn_id : $event_id, |
| 556 |
'url' => $url, |
| 557 |
'code' => $code, |
| 558 |
'message' => !empty($r['message']) ? (string)$r['message'] : '', |
| 559 |
)); |
| 560 |
} |
| 561 |
|
| 562 |
status_header(200); |
| 563 |
exit(); |
| 564 |
} |
| 565 |
} |
| 566 |
} |
| 567 |
|
