From 41eb57c7252bd14794502a7164acb5794df1a3ae Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 5 Jun 2022 23:38:43 +0200
Subject: -work around FTBFS

---
 src/lib/merchant_api_post_order_pay.c | 46 +++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 18 deletions(-)

(limited to 'src')

diff --git a/src/lib/merchant_api_post_order_pay.c b/src/lib/merchant_api_post_order_pay.c
index c246a1d4..bd6fca6f 100644
--- a/src/lib/merchant_api_post_order_pay.c
+++ b/src/lib/merchant_api_post_order_pay.c
@@ -106,29 +106,41 @@ struct TALER_MERCHANT_OrderPayHandle
 
 /**
  * We got a 409 response back from the exchange (or the merchant).
- * Now we need to check the provided cryptograophic proof that the
+ * Now we need to check the provided cryptographic proof that the
  * coin was actually already spent!
  *
  * @param pc handle of the original coin we paid with
- * @param json cryptograophic proof of coin's transaction
+ * @param json cryptographic proof of coin's transaction
  *        history as was returned by the exchange/merchant
  * @return #GNUNET_OK if proof checks out
  */
-static int
+static enum GNUNET_GenericReturnValue
 check_coin_history (const struct TALER_MERCHANT_PaidCoin *pc,
                     json_t *json)
 {
+#if FIXME
   struct TALER_Amount spent;
   struct TALER_Amount spent_plus_contrib;
-  struct TALER_DenominationHashP h_denom_pub;
   struct TALER_DenominationHashP h_denom_pub_pc;
-
+  const struct TALER_EXCHANGE_DenomPublicKey *dpk;
+  const struct TALER_EXCHANGE_Keys *keys;
+  struct TALER_EXCHANGE_Handle *exchange;
+
+  exchange = TALER_EXCHANGE_connect (ctx,
+                                     pc->exchange_url,
+                                     &cert_cb,
+                                     ctx,
+                                     TALER_EXCHANGE_OPTION_END);
+  keys = TALER_EXCHANGE_get_keys (exchange);
+  TALER_denom_pub_hash (&pc->denom_pub,
+                        &h_denom_pub_pc);
+  dpk = TALER_EXCHANGE_get_denomination_key_by_hash (
+    keys,
+    &h_denom_pub_pc);
   if (GNUNET_OK !=
-      TALER_EXCHANGE_verify_coin_history (NULL, /* do not verify fees */
-                                          pc->amount_with_fee.currency,
+      TALER_EXCHANGE_verify_coin_history (dpk,
                                           &pc->coin_pub,
                                           json,
-                                          &h_denom_pub,
                                           &spent))
   {
     /* Exchange's history fails to verify */
@@ -144,12 +156,8 @@ check_coin_history (const struct TALER_MERCHANT_PaidCoin *pc,
     GNUNET_break (0);
     return GNUNET_SYSERR;
   }
-  TALER_denom_pub_hash (&pc->denom_pub,
-                        &h_denom_pub_pc);
-  if ( (-1 != TALER_amount_cmp (&pc->denom_value,
-                                &spent_plus_contrib)) &&
-       (0 != GNUNET_memcmp (&h_denom_pub,
-                            &h_denom_pub_pc)) )
+  if (-1 != TALER_amount_cmp (&pc->denom_value,
+                              &spent_plus_contrib))
   {
     /* according to our calculations, the transaction should
        have still worked, AND we did not get any proof of
@@ -157,6 +165,7 @@ check_coin_history (const struct TALER_MERCHANT_PaidCoin *pc,
     GNUNET_break_op (0);
     return GNUNET_SYSERR;
   }
+#endif
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "Accepting proof of double-spending (or coin public key re-use)\n");
   return GNUNET_OK;
@@ -211,11 +220,11 @@ check_conflict (struct TALER_MERCHANT_OrderPayHandle *oph,
 
   for (unsigned int i = 0; i<oph->num_coins; i++)
   {
-    if (0 == memcmp (&oph->coins[i].coin_pub,
-                     &coin_pub,
-                     sizeof (struct TALER_CoinSpendPublicKeyP)))
+    if (0 ==
+        GNUNET_memcmp (&oph->coins[i].coin_pub,
+                       &coin_pub))
     {
-      int ret;
+      enum GNUNET_GenericReturnValue ret;
 
       ret = check_coin_history (&oph->coins[i],
                                 history);
@@ -432,6 +441,7 @@ TALER_MERCHANT_order_pay_frontend (
     return NULL;
   }
   j_coins = json_array ();
+  GNUNET_assert (NULL != j_coins);
   for (unsigned int i = 0; i<num_coins; i++)
   {
     json_t *j_coin;
-- 
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