CRM/Core/Payment/PayPalProIPN.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | Copyright CiviCRM LLC. All rights reserved.                        |
   5  |                                                                    |
   6  | This work is published under the GNU AGPLv3 license with some      |
   7  | permitted exceptions and without any warranty. For full license    |
   8  | and copyright information, see https://civicrm.org/licensing       |
   9  +--------------------------------------------------------------------+
  10  */
  11
  12 /**
  13  *
  14  * @package CRM
  15  * @copyright CiviCRM LLC https://civicrm.org/licensing
  16  */
  17 class CRM_Core_Payment_PayPalProIPN extends CRM_Core_Payment_BaseIPN {
  18
  19   public static $_paymentProcessor = NULL;
  20
  21   /**
  22    * Input parameters from payment processor. Store these so that
  23    * the code does not need to keep retrieving from the http request
  24    * @var array
  25    */
  26   protected $_inputParameters = [];
  27
  28   /**
  29    * Store for the variables from the invoice string.
  30    * @var array
  31    */
  32   protected $_invoiceData = [];
  33
  34   /**
  35    * Is this a payment express transaction.
  36    * @var bool
  37    */
  38   protected $_isPaymentExpress = FALSE;
  39
  40   /**
  41    * Component.
  42    *
  43    * Are we dealing with an event an 'anything else' (contribute).
  44    *
  45    * @var string
  46    */
  47   protected $_component = 'contribute';
  48
  49   /**
  50    * Constructor function.
  51    *
  52    * @param array $inputData
  53    *   Contents of HTTP REQUEST.
  54    *
  55    * @throws CRM_Core_Exception
  56    */
  57   public function __construct($inputData) {
  58     $this->setInputParameters($inputData);
  59     $this->setInvoiceData();
  60     parent::__construct();
  61   }
  62
  63   /**
  64    * get the values from the rp_invoice_id string.
  65    *
  66    * @param string $name
  67    *   E.g. i, values are stored in the string with letter codes.
  68    * @param bool $abort
  69    *   Throw exception if not found
  70    *
  71    * @throws CRM_Core_Exception
  72    * @return mixed
  73    */
  74   public function getValue($name, $abort = TRUE) {
  75     if ($abort && empty($this->_invoiceData[$name])) {
  76       throw new CRM_Core_Exception("Failure: Missing Parameter $name");
  77     }
  78     else {
  79       return $this->_invoiceData[$name] ?? NULL;
  80     }
  81   }
  82
  83   /**
  84    * Set $this->_invoiceData from the input array
  85    */
  86   public function setInvoiceData() {
  87     if (empty($this->_inputParameters['rp_invoice_id'])) {
  88       $this->_isPaymentExpress = TRUE;
  89       return;
  90     }
  91     $rpInvoiceArray = explode('&', $this->_inputParameters['rp_invoice_id']);
  92     // for clarify let's also store without the single letter unreadable
  93     //@todo after more refactoring we might ditch storing the one letter stuff
  94     $mapping = [
  95       'i' => 'invoice_id',
  96       'm' => 'component',
  97       'c' => 'contact_id',
  98       'b' => 'contribution_id',
  99       'r' => 'contribution_recur_id',
 100       'p' => 'participant_id',
 101       'e' => 'event_id',
 102     ];
 103     foreach ($rpInvoiceArray as $rpInvoiceValue) {
 104       $rpValueArray = explode('=', $rpInvoiceValue);
 105       $this->_invoiceData[$rpValueArray[0]] = $rpValueArray[1];
 106       $this->_inputParameters[$mapping[$rpValueArray[0]]] = $rpValueArray[1];
 107       // p has been overloaded & could mean contribution page or participant id. Clearly we need an
 108       // alphabet with more letters.
 109       // the mode will always be resolved before the mystery p is reached
 110       if ($rpValueArray[1] == 'contribute') {
 111         $mapping['p'] = 'contribution_page_id';
 112       }
 113     }
 114     if (empty($this->_inputParameters['component'])) {
 115       $this->_isPaymentExpress = TRUE;
 116     }
 117   }
 118
 119   /**
 120    * @param string $name
 121    *   Of variable to return.
 122    * @param string $type
 123    *   Data type.
 124    *   - String
 125    *   - Integer
 126    * @param string $location
 127    *   Deprecated.
 128    * @param bool $abort
 129    *   Abort if empty.
 130    *
 131    * @throws CRM_Core_Exception
 132    * @return mixed
 133    */
 134   public function retrieve($name, $type, $location = 'POST', $abort = TRUE) {
 135     $value = CRM_Utils_Type::validate(
 136       CRM_Utils_Array::value($name, $this->_inputParameters),
 137       $type,
 138       FALSE
 139     );
 140     if ($abort && $value === NULL) {
 141       throw new CRM_Core_Exception("Could not find an entry for $name in $location");
 142     }
 143     return $value;
 144   }
 145
 146   /**
 147    * Process recurring contributions.
 148    * @param array $input
 149    * @param array $ids
 150    * @param array $objects
 151    * @param bool $first
 152    * @return void
 153    */
 154   public function recur(&$input, &$ids, &$objects, $first) {
 155     if (!isset($input['txnType'])) {
 156       Civi::log()->debug('PayPalProIPN: Could not find txn_type in input request.');
 157       echo "Failure: Invalid parameters<p>";
 158       return;
 159     }
 160
 161     $recur = &$objects['contributionRecur'];
 162
 163     // make sure the invoice ids match
 164     // make sure the invoice is valid and matches what we have in
 165     // the contribution record
 166     if ($recur->invoice_id != $input['invoice']) {
 167       Civi::log()->debug('PayPalProIPN: Invoice values dont match between database and IPN request recur is ' . $recur->invoice_id . ' input is ' . $input['invoice']);
 168       echo "Failure: Invoice values dont match between database and IPN request recur is " . $recur->invoice_id . " input is " . $input['invoice'];
 169       return;
 170     }
 171
 172     $now = date('YmdHis');
 173
 174     // fix dates that already exist
 175     $dates = ['create', 'start', 'end', 'cancel', 'modified'];
 176     foreach ($dates as $date) {
 177       $name = "{$date}_date";
 178       if ($recur->$name) {
 179         $recur->$name = CRM_Utils_Date::isoToMysql($recur->$name);
 180       }
 181     }
 182
 183     $sendNotification = FALSE;
 184     $subscriptionPaymentStatus = NULL;
 185     //List of Transaction Type
 186     /*
 187     recurring_payment_profile_created          RP Profile Created
 188     recurring_payment           RP Successful Payment
 189     recurring_payment_failed                               RP Failed Payment
 190     recurring_payment_profile_cancel           RP Profile Cancelled
 191     recurring_payment_expired         RP Profile Expired
 192     recurring_payment_skipped        RP Profile Skipped
 193     recurring_payment_outstanding_payment      RP Successful Outstanding Payment
 194     recurring_payment_outstanding_payment_failed          RP Failed Outstanding Payment
 195     recurring_payment_suspended        RP Profile Suspended
 196     recurring_payment_suspended_due_to_max_failed_payment  RP Profile Suspended due to Max Failed Payment
 197      */
 198
 199     //set transaction type
 200     $txnType = $this->retrieve('txn_type', 'String');
 201     //Changes for paypal pro recurring payment
 202     $contributionStatuses = array_flip(CRM_Contribute_BAO_Contribution::buildOptions('contribution_status_id', 'validate'));
 203     switch ($txnType) {
 204       case 'recurring_payment_profile_created':
 205         if (in_array($recur->contribution_status_id, [
 206           $contributionStatuses['Pending'],
 207           $contributionStatuses['In Progress'],
 208         ])
 209           && !empty($recur->processor_id)
 210         ) {
 211           echo "already handled";
 212           return;
 213         }
 214         $recur->create_date = $now;
 215         $recur->contribution_status_id = $contributionStatuses['Pending'];
 216         $recur->processor_id = $this->retrieve('recurring_payment_id', 'String');
 217         $recur->trxn_id = $recur->processor_id;
 218         $subscriptionPaymentStatus = CRM_Core_Payment::RECURRING_PAYMENT_START;
 219         $sendNotification = TRUE;
 220         break;
 221
 222       case 'recurring_payment':
 223         if ($first) {
 224           $recur->start_date = $now;
 225         }
 226         else {
 227           if ($input['paymentStatus'] != 'Completed') {
 228             throw new CRM_Core_Exception("Ignore all IPN payments that are not completed");
 229           }
 230
 231           // In future moving to create pending & then complete, but this OK for now.
 232           // Also consider accepting 'Failed' like other processors.
 233           $input['contribution_status_id'] = $contributionStatuses['Completed'];
 234           $input['invoice_id'] = md5(uniqid(rand(), TRUE));
 235           $input['original_contribution_id'] = $ids['contribution'];
 236           $input['contribution_recur_id'] = $ids['contributionRecur'];
 237
 238           civicrm_api3('Contribution', 'repeattransaction', $input);
 239           return;
 240         }
 241
 242         //contribution installment is completed
 243         if ($this->retrieve('profile_status', 'String') == 'Expired') {
 244           if (!empty($recur->end_date)) {
 245             echo "already handled";
 246             return;
 247           }
 248           $recur->contribution_status_id = $contributionStatuses['Completed'];
 249           $recur->end_date = $now;
 250           $sendNotification = TRUE;
 251           $subscriptionPaymentStatus = CRM_Core_Payment::RECURRING_PAYMENT_END;
 252         }
 253
 254         // make sure the contribution status is not done
 255         // since order of ipn's is unknown
 256         if ($recur->contribution_status_id != $contributionStatuses['Completed']) {
 257           $recur->contribution_status_id = $contributionStatuses['In Progress'];
 258         }
 259         break;
 260     }
 261
 262     $recur->save();
 263
 264     if ($sendNotification) {
 265       $autoRenewMembership = FALSE;
 266       if ($recur->id &&
 267         isset($ids['membership']) && $ids['membership']
 268       ) {
 269         $autoRenewMembership = TRUE;
 270       }
 271       //send recurring Notification email for user
 272       CRM_Contribute_BAO_ContributionPage::recurringNotify($subscriptionPaymentStatus,
 273         $ids['contact'],
 274         $ids['contributionPage'],
 275         $recur,
 276         $autoRenewMembership
 277       );
 278     }
 279
 280     if ($txnType != 'recurring_payment') {
 281       return;
 282     }
 283
 284     if (!$first) {
 285       //check if this contribution transaction is already processed
 286       //if not create a contribution and then get it processed
 287       $contribution = new CRM_Contribute_BAO_Contribution();
 288       $contribution->trxn_id = $input['trxn_id'];
 289       if ($contribution->trxn_id && $contribution->find()) {
 290         Civi::log()->debug('PayPalProIPN: Returning since contribution has already been handled.');
 291         echo "Success: Contribution has already been handled<p>";
 292         return;
 293       }
 294
 295       $contribution->contact_id = $recur->contact_id;
 296       $contribution->financial_type_id = $objects['contributionType']->id;
 297       $contribution->contribution_page_id = $ids['contributionPage'];
 298       $contribution->contribution_recur_id = $ids['contributionRecur'];
 299       $contribution->currency = $objects['contribution']->currency;
 300       $contribution->payment_instrument_id = $objects['contribution']->payment_instrument_id;
 301       $contribution->amount_level = $objects['contribution']->amount_level;
 302       $contribution->campaign_id = $objects['contribution']->campaign_id;
 303       $objects['contribution'] = &$contribution;
 304       $contribution->invoice_id = md5(uniqid(rand(), TRUE));
 305     }
 306     // CRM-13737 - am not aware of any reason why payment_date would not be set - this if is a belt & braces
 307     $objects['contribution']->receive_date = !empty($input['payment_date']) ? date('YmdHis', strtotime($input['payment_date'])) : $now;
 308
 309     $this->single($input, $ids, $objects, TRUE, $first);
 310   }
 311
 312   /**
 313    * @param array $input
 314    * @param array $ids
 315    * @param array $objects
 316    * @param bool $recur
 317    * @param bool $first
 318    *
 319    * @return void
 320    */
 321   public function single(&$input, &$ids, &$objects, $recur = FALSE, $first = FALSE) {
 322     $contribution = &$objects['contribution'];
 323
 324     // make sure the invoice is valid and matches what we have in the contribution record
 325     if ((!$recur) || ($recur && $first)) {
 326       if ($contribution->invoice_id != $input['invoice']) {
 327         Civi::log()->debug('PayPalProIPN: Invoice values dont match between database and IPN request.');
 328         echo "Failure: Invoice values dont match between database and IPN request<p>contribution is" . $contribution->invoice_id . " and input is " . $input['invoice'];
 329         return;
 330       }
 331     }
 332     else {
 333       $contribution->invoice_id = md5(uniqid(rand(), TRUE));
 334     }
 335
 336     if (!$recur) {
 337       if ($contribution->total_amount != $input['amount']) {
 338         Civi::log()->debug('PayPalProIPN: Amount values dont match between database and IPN request.');
 339         echo "Failure: Amount values dont match between database and IPN request<p>";
 340         return;
 341       }
 342     }
 343     else {
 344       $contribution->total_amount = $input['amount'];
 345     }
 346
 347     $transaction = new CRM_Core_Transaction();
 348
 349     $status = $input['paymentStatus'];
 350     if ($status == 'Denied' || $status == 'Failed' || $status == 'Voided') {
 351       $this->failed($objects, $transaction);
 352       return;
 353     }
 354     elseif ($status == 'Pending') {
 355       $this->pending($objects, $transaction);
 356       return;
 357     }
 358     elseif ($status == 'Refunded' || $status == 'Reversed') {
 359       $this->cancelled($objects, $transaction);
 360       return;
 361     }
 362     elseif ($status != 'Completed') {
 363       $this->unhandled($objects, $transaction);
 364       return;
 365     }
 366
 367     // check if contribution is already completed, if so we ignore this ipn
 368     $completedStatusId = CRM_Core_PseudoConstant::getKey('CRM_Contribute_BAO_Contribution', 'contribution_status_id', 'Completed');
 369     if ($contribution->contribution_status_id == $completedStatusId) {
 370       $transaction->commit();
 371       Civi::log()->debug('PayPalProIPN: Returning since contribution has already been handled.');
 372       echo "Success: Contribution has already been handled<p>";
 373       return;
 374     }
 375
 376     $this->completeTransaction($input, $ids, $objects, $transaction, $recur);
 377   }
 378
 379   /**
 380    * Gets PaymentProcessorID for PayPal
 381    *
 382    * @return int
 383    */
 384   public function getPayPalPaymentProcessorID() {
 385     // This is an unreliable method as there could be more than one instance.
 386     // Recommended approach is to use the civicrm/payment/ipn/xx url where xx is the payment
 387     // processor id & the handleNotification function (which should call the completetransaction api & by-pass this
 388     // entirely). The only thing the IPN class should really do is extract data from the request, validate it
 389     // & call completetransaction or call fail? (which may not exist yet).
 390
 391     Civi::log()->warning('Unreliable method used to get payment_processor_id for PayPal Pro IPN - this will cause problems if you have more than one instance');
 392
 393     $paymentProcessorTypeID = CRM_Core_DAO::getFieldValue('CRM_Financial_DAO_PaymentProcessorType',
 394       'PayPal', 'id', 'name'
 395     );
 396     return (int) civicrm_api3('PaymentProcessor', 'getvalue', [
 397       'is_test' => 0,
 398       'options' => ['limit' => 1],
 399       'payment_processor_type_id' => $paymentProcessorTypeID,
 400       'return' => 'id',
 401     ]);
 402
 403   }
 404
 405   /**
 406    * This is the main function to call. It should be sufficient to instantiate the class
 407    * (with the input parameters) & call this & all will be done
 408    *
 409    * @todo the references to POST throughout this class need to be removed
 410    * @return void
 411    */
 412   public function main() {
 413     CRM_Core_Error::debug_var('GET', $_GET, TRUE, TRUE);
 414     CRM_Core_Error::debug_var('POST', $_POST, TRUE, TRUE);
 415     if ($this->_isPaymentExpress) {
 416       $this->handlePaymentExpress();
 417       return;
 418     }
 419     $objects = $ids = $input = [];
 420     $this->_component = $input['component'] = self::getValue('m');
 421     $input['invoice'] = self::getValue('i', TRUE);
 422     // get the contribution and contact ids from the GET params
 423     $ids['contact'] = self::getValue('c', TRUE);
 424     $ids['contribution'] = self::getValue('b', TRUE);
 425
 426     $this->getInput($input, $ids);
 427
 428     if ($this->_component == 'event') {
 429       $ids['event'] = self::getValue('e', TRUE);
 430       $ids['participant'] = self::getValue('p', TRUE);
 431       $ids['contributionRecur'] = self::getValue('r', FALSE);
 432     }
 433     else {
 434       // get the optional ids
 435       //@ how can this not be broken retrieving from GET as we are dealing with a POST request?
 436       // copy & paste? Note the retrieve function now uses data from _REQUEST so this will be included
 437       $ids['membership'] = self::retrieve('membershipID', 'Integer', 'GET', FALSE);
 438       $ids['contributionRecur'] = self::getValue('r', FALSE);
 439       $ids['contributionPage'] = self::getValue('p', FALSE);
 440       $ids['related_contact'] = self::retrieve('relatedContactID', 'Integer', 'GET', FALSE);
 441       $ids['onbehalf_dupe_alert'] = self::retrieve('onBehalfDupeAlert', 'Integer', 'GET', FALSE);
 442     }
 443
 444     if (!$ids['membership'] && $ids['contributionRecur']) {
 445       $sql = "
 446     SELECT m.id
 447       FROM civicrm_membership m
 448 INNER JOIN civicrm_membership_payment mp ON m.id = mp.membership_id AND mp.contribution_id = %1
 449      WHERE m.contribution_recur_id = %2
 450      LIMIT 1";
 451       $sqlParams = [
 452         1 => [$ids['contribution'], 'Integer'],
 453         2 => [$ids['contributionRecur'], 'Integer'],
 454       ];
 455       if ($membershipId = CRM_Core_DAO::singleValueQuery($sql, $sqlParams)) {
 456         $ids['membership'] = $membershipId;
 457       }
 458     }
 459
 460     $paymentProcessorID = self::getPayPalPaymentProcessorID();
 461
 462     if (!$this->validateData($input, $ids, $objects, TRUE, $paymentProcessorID)) {
 463       return;
 464     }
 465
 466     self::$_paymentProcessor = &$objects['paymentProcessor'];
 467     //?? how on earth would we not have component be one of these?
 468     // they are the only valid settings & this IPN file can't even be called without one of them
 469     // grepping for this class doesn't find other paths to call this class
 470     if ($this->_component == 'contribute' || $this->_component == 'event') {
 471       if ($ids['contributionRecur']) {
 472         // check if first contribution is completed, else complete first contribution
 473         $first = TRUE;
 474         $completedStatusId = CRM_Core_PseudoConstant::getKey('CRM_Contribute_BAO_Contribution', 'contribution_status_id', 'Completed');
 475         if ($objects['contribution']->contribution_status_id == $completedStatusId) {
 476           $first = FALSE;
 477         }
 478         $this->recur($input, $ids, $objects, $first);
 479         return;
 480       }
 481     }
 482     $this->single($input, $ids, $objects, FALSE, FALSE);
 483   }
 484
 485   /**
 486    * @param array $input
 487    * @param array $ids
 488    *
 489    * @return void
 490    * @throws CRM_Core_Exception
 491    */
 492   public function getInput(&$input, &$ids) {
 493     if (!$this->getBillingID($ids)) {
 494       return;
 495     }
 496
 497     $input['txnType'] = self::retrieve('txn_type', 'String', 'POST', FALSE);
 498     $input['paymentStatus'] = self::retrieve('payment_status', 'String', 'POST', FALSE);
 499
 500     $input['amount'] = self::retrieve('mc_gross', 'Money', 'POST', FALSE);
 501     $input['reasonCode'] = self::retrieve('ReasonCode', 'String', 'POST', FALSE);
 502
 503     $billingID = $ids['billing'];
 504     $lookup = [
 505       "first_name" => 'first_name',
 506       "last_name" => 'last_name',
 507       "street_address-{$billingID}" => 'address_street',
 508       "city-{$billingID}" => 'address_city',
 509       "state-{$billingID}" => 'address_state',
 510       "postal_code-{$billingID}" => 'address_zip',
 511       "country-{$billingID}" => 'address_country_code',
 512     ];
 513     foreach ($lookup as $name => $paypalName) {
 514       $value = self::retrieve($paypalName, 'String', 'POST', FALSE);
 515       $input[$name] = $value ? $value : NULL;
 516     }
 517
 518     $input['is_test'] = self::retrieve('test_ipn', 'Integer', 'POST', FALSE);
 519     $input['fee_amount'] = self::retrieve('mc_fee', 'Money', 'POST', FALSE);
 520     $input['net_amount'] = self::retrieve('settle_amount', 'Money', 'POST', FALSE);
 521     $input['trxn_id'] = self::retrieve('txn_id', 'String', 'POST', FALSE);
 522     $input['payment_date'] = $input['receive_date'] = self::retrieve('payment_date', 'String', 'POST', FALSE);
 523     $input['total_amount'] = $input['amount'];
 524   }
 525
 526   /**
 527    * Handle payment express IPNs.
 528    *
 529    * For one off IPNS no actual response is required
 530    * Recurring is more difficult as we have limited confirmation material
 531    * lets look up invoice id in recur_contribution & rely on the unique transaction id to ensure no
 532    * duplicated
 533    * this may not be acceptable to all sites - e.g. if they are shipping or delivering something in return
 534    * then the quasi security of the ids array might be required - although better to
 535    * http://stackoverflow.com/questions/4848227/validate-that-ipn-call-is-from-paypal
 536    * but let's assume knowledge on invoice id & schedule is enough for now esp for donations
 537    * only contribute is handled
 538    */
 539   public function handlePaymentExpress() {
 540     //@todo - loads of copy & paste / code duplication but as this not going into core need to try to
 541     // keep discreet
 542     // also note that a lot of the complexity above could be removed if we used
 543     // http://stackoverflow.com/questions/4848227/validate-that-ipn-call-is-from-paypal
 544     // as membership id etc can be derived by the load objects fn
 545     $objects = $ids = $input = [];
 546     $isFirst = FALSE;
 547     $input['invoice'] = self::getValue('i', FALSE);
 548     //Avoid return in case of unit test.
 549     if (empty($input['invoice']) && empty($this->_inputParameters['is_unit_test'])) {
 550       return;
 551     }
 552     $input['txnType'] = $this->retrieve('txn_type', 'String');
 553     $contributionRecur = civicrm_api3('contribution_recur', 'getsingle', [
 554       'return' => 'contact_id, id, payment_processor_id',
 555       'invoice_id' => $input['invoice'],
 556     ]);
 557
 558     if ($input['txnType'] !== 'recurring_payment' && $input['txnType'] !== 'recurring_payment_profile_created') {
 559       throw new CRM_Core_Exception('Paypal IPNS not handled other than recurring_payments');
 560     }
 561
 562     $this->getInput($input, $ids);
 563     if ($input['txnType'] === 'recurring_payment' && $this->transactionExists($input['trxn_id'])) {
 564       throw new CRM_Core_Exception('This transaction has already been processed');
 565     }
 566
 567     $ids['contact'] = $contributionRecur['contact_id'];
 568     $ids['contributionRecur'] = $contributionRecur['id'];
 569     $result = civicrm_api3('contribution', 'getsingle', ['invoice_id' => $input['invoice'], 'contribution_test' => '']);
 570
 571     $ids['contribution'] = $result['id'];
 572     //@todo hardcoding 'pending' for now
 573     $pendingStatusId = CRM_Core_PseudoConstant::getKey('CRM_Contribute_BAO_Contribution', 'contribution_status_id', 'Pending');
 574     if ($result['contribution_status_id'] == $pendingStatusId) {
 575       $isFirst = TRUE;
 576     }
 577     // arg api won't get this - fix it
 578     $ids['contributionPage'] = CRM_Core_DAO::singleValueQuery("SELECT contribution_page_id FROM civicrm_contribution WHERE invoice_id = %1", [
 579       1 => [
 580         $ids['contribution'],
 581         'Integer',
 582       ],
 583     ]);
 584     // only handle component at this stage - not terribly sure how a recurring event payment would arise
 585     // & suspec main function may be a victom of copy & paste
 586     // membership would be an easy add - but not relevant to my customer...
 587     $this->_component = $input['component'] = 'contribute';
 588     $input['trxn_date'] = date('Y-m-d-H-i-s', strtotime(self::retrieve('time_created', 'String')));
 589     $paymentProcessorID = $contributionRecur['payment_processor_id'];
 590
 591     if (!$this->validateData($input, $ids, $objects, TRUE, $paymentProcessorID)) {
 592       throw new CRM_Core_Exception('Data did not validate');
 593     }
 594     $this->recur($input, $ids, $objects, $isFirst);
 595   }
 596
 597   /**
 598    * Function check if transaction already exists.
 599    * @param string $trxn_id
 600    * @return bool|void
 601    */
 602   public function transactionExists($trxn_id) {
 603     if (CRM_Core_DAO::singleValueQuery("SELECT count(*) FROM civicrm_contribution WHERE trxn_id = %1",
 604       [
 605         1 => [$trxn_id, 'String'],
 606       ])
 607     ) {
 608       return TRUE;
 609     }
 610   }
 611
 612 }