From cbe046b30ab34ec07934bbdcbcb9b0438f24a821 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Thu, 4 May 2023 21:57:52 +0200
Subject: wrap contract_terms in pay hook

---
 ...-merchant-httpd_private-post-orders-ID-refund.c | 49 +++++++++++++++++++---
 1 file changed, 44 insertions(+), 5 deletions(-)

(limited to 'src/backend/taler-merchant-httpd_private-post-orders-ID-refund.c')

diff --git a/src/backend/taler-merchant-httpd_private-post-orders-ID-refund.c b/src/backend/taler-merchant-httpd_private-post-orders-ID-refund.c
index 5b5f6b05..130b9dde 100644
--- a/src/backend/taler-merchant-httpd_private-post-orders-ID-refund.c
+++ b/src/backend/taler-merchant-httpd_private-post-orders-ID-refund.c
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  (C) 2014-2021 Taler Systems SA
+  (C) 2014-2023 Taler Systems SA
 
   TALER is free software; you can redistribute it and/or modify it under the
   terms of the GNU Affero General Public License as published by the Free Software
@@ -130,13 +130,13 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
   };
   enum TALER_MERCHANTDB_RefundStatus rs;
   struct TALER_PrivateContractHashP h_contract;
+  json_t *contract_terms;
+  struct GNUNET_TIME_Timestamp timestamp;
 
   {
     enum GNUNET_DB_QueryStatus qs;
-    json_t *contract_terms;
     uint64_t order_serial;
     struct GNUNET_TIME_Timestamp refund_deadline;
-    struct GNUNET_TIME_Timestamp timestamp;
     bool paid = false;
 
     qs = TMH_db->lookup_contract_terms (TMH_db->cls,
@@ -170,12 +170,12 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
           TALER_EC_MERCHANT_GENERIC_DB_CONTRACT_CONTENT_INVALID,
           "mandatory fields missing");
       }
-      json_decref (contract_terms);
       if (GNUNET_TIME_timestamp_cmp (timestamp,
                                      ==,
                                      refund_deadline))
       {
         /* refund was never allowed, so we should refuse hard */
+        json_decref (contract_terms);
         return TALER_MHD_reply_with_error (
           connection,
           MHD_HTTP_FORBIDDEN,
@@ -191,6 +191,7 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
     }
     else
     {
+      json_decref (contract_terms);
       return TALER_MHD_reply_with_error (connection,
                                          MHD_HTTP_NOT_FOUND,
                                          TALER_EC_MERCHANT_GENERIC_ORDER_UNKNOWN,
@@ -205,9 +206,12 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
                                      hc->request_body,
                                      spec);
     if (GNUNET_OK != res)
+    {
+      json_decref (contract_terms);
       return (GNUNET_NO == res)
              ? MHD_YES
              : MHD_NO;
+    }
   }
 
   TMH_db->preflight (TMH_db->cls);
@@ -218,6 +222,7 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
                        "increase refund"))
     {
       GNUNET_break (0);
+      json_decref (contract_terms);
       return TALER_MHD_reply_with_error (connection,
                                          MHD_HTTP_INTERNAL_SERVER_ERROR,
                                          TALER_EC_GENERIC_DB_START_FAILED,
@@ -238,8 +243,41 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
     if (TALER_MERCHANTDB_RS_SUCCESS == rs)
     {
       enum GNUNET_DB_QueryStatus qs;
+      json_t *rargs;
 
-      qs = TMH_db->commit (TMH_db->cls);
+      rargs = GNUNET_JSON_PACK (
+        GNUNET_JSON_pack_timestamp ("timestamp",
+                                    timestamp),
+        GNUNET_JSON_pack_string ("order_id",
+                                 hc->infix),
+        GNUNET_JSON_pack_object_incref ("contract_terms",
+                                        contract_terms),
+        TALER_JSON_pack_amount ("refund_amount",
+                                &refund),
+        GNUNET_JSON_pack_string ("reason",
+                                 reason)
+        );
+      GNUNET_assert (NULL != rargs);
+      qs = TMH_trigger_webhook (
+        hc->instance->settings.id,
+        "refund",
+        rargs);
+      json_decref (rargs);
+      switch (qs)
+      {
+      case GNUNET_DB_STATUS_HARD_ERROR:
+        GNUNET_break (0);
+        TMH_db->rollback (TMH_db->cls);
+        rs = TALER_MERCHANTDB_RS_HARD_ERROR;
+        break;
+      case GNUNET_DB_STATUS_SOFT_ERROR:
+        TMH_db->rollback (TMH_db->cls);
+        continue;
+      case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
+      case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
+        qs = TMH_db->commit (TMH_db->cls);
+        break;
+      }
       if (GNUNET_DB_STATUS_HARD_ERROR == qs)
       {
         GNUNET_break (0);
@@ -253,6 +291,7 @@ TMH_private_post_orders_ID_refund (const struct TMH_RequestHandler *rh,
     }
     break;
   } /* retries loop */
+  json_decref (contract_terms);
 
   switch (rs)
   {
-- 
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