[taler-exchange] branch master updated: -more minor bugfixes

[gnunet]

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grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 446761b6 -more minor bugfixes
446761b6 is described below

commit 446761b6029298410000181697abef5dbdbd4b57
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Tue Jun 7 16:57:12 2022 +0200

    -more minor bugfixes
---
 src/lib/exchange_api_common.c                | 53 ++++++++++++----------------
 src/lib/exchange_api_purse_merge.c           |  5 +--
 src/lib/exchange_api_refund.c                | 27 ++++++++++----
 src/lib/exchange_api_reserves_history.c      |  2 ++
 src/testing/testing_api_cmd_insert_deposit.c | 18 +++++-----
 5 files changed, 58 insertions(+), 47 deletions(-)

diff --git a/src/lib/exchange_api_common.c b/src/lib/exchange_api_common.c
index 79e5a31d..4b36aa93 100644
--- a/src/lib/exchange_api_common.c
+++ b/src/lib/exchange_api_common.c
@@ -842,21 +842,17 @@ help_melt (struct CoinHistoryParseContext *pc,
     return GNUNET_SYSERR;
   }
 
-  if (NULL != pc->dk)
+  /* check that melt fee matches our expectations from /keys! */
+  if ( (GNUNET_YES !=
+        TALER_amount_cmp_currency (&melt_fee,
+                                   &pc->dk->fees.refresh)) ||
+       (0 !=
+        TALER_amount_cmp (&melt_fee,
+                          &pc->dk->fees.refresh)) )
   {
-    /* check that melt fee matches our expectations from /keys! */
-    if ( (GNUNET_YES !=
-          TALER_amount_cmp_currency (&melt_fee,
-                                     &pc->dk->fees.refresh)) ||
-         (0 !=
-          TALER_amount_cmp (&melt_fee,
-                            &pc->dk->fees.refresh)) )
-    {
-      GNUNET_break_op (0);
-      return GNUNET_SYSERR;
-    }
+    GNUNET_break_op (0);
+    return GNUNET_SYSERR;
   }
-
   if (GNUNET_OK !=
       TALER_wallet_melt_verify (
         amount,
@@ -938,26 +934,23 @@ help_refund (struct CoinHistoryParseContext *pc,
     return GNUNET_SYSERR;
   }
   /* NOTE: theoretically, we could also check that the given
-       merchant_pub and h_contract_terms appear in the
-       history under deposits.  However, there is really no benefit
-       for the exchange to lie here, so not checking is probably OK
-       (an auditor ought to check, though). Then again, we similarly
-       had no reason to check the merchant's signature (other than a
-       well-formendess check). */
+     merchant_pub and h_contract_terms appear in the
+     history under deposits.  However, there is really no benefit
+     for the exchange to lie here, so not checking is probably OK
+     (an auditor ought to check, though). Then again, we similarly
+     had no reason to check the merchant's signature (other than a
+     well-formendess check). */
 
   /* check that refund fee matches our expectations from /keys! */
-  if (NULL != pc->dk)
+  if ( (GNUNET_YES !=
+        TALER_amount_cmp_currency (&refund_fee,
+                                   &pc->dk->fees.refund)) ||
+       (0 !=
+        TALER_amount_cmp (&refund_fee,
+                          &pc->dk->fees.refund)) )
   {
-    if ( (GNUNET_YES !=
-          TALER_amount_cmp_currency (&refund_fee,
-                                     &pc->dk->fees.refund)) ||
-         (0 !=
-          TALER_amount_cmp (&refund_fee,
-                            &pc->dk->fees.refund)) )
-    {
-      GNUNET_break_op (0);
-      return GNUNET_SYSERR;
-    }
+    GNUNET_break_op (0);
+    return GNUNET_SYSERR;
   }
   return GNUNET_NO;
 }
diff --git a/src/lib/exchange_api_purse_merge.c 
b/src/lib/exchange_api_purse_merge.c
index 4b65e97f..6b6c3751 100644
--- a/src/lib/exchange_api_purse_merge.c
+++ b/src/lib/exchange_api_purse_merge.c
@@ -406,8 +406,9 @@ TALER_EXCHANGE_account_merge (
   {
     struct TALER_Amount zero_purse_fee;
 
-    TALER_amount_set_zero (purse_value_after_fees->currency,
-                           &zero_purse_fee);
+    GNUNET_assert (GNUNET_OK ==
+                   TALER_amount_set_zero (purse_value_after_fees->currency,
+                                          &zero_purse_fee));
     TALER_wallet_account_merge_sign (merge_timestamp,
                                      purse_pub,
                                      purse_expiration,
diff --git a/src/lib/exchange_api_refund.c b/src/lib/exchange_api_refund.c
index 09a21883..b1cd7c84 100644
--- a/src/lib/exchange_api_refund.c
+++ b/src/lib/exchange_api_refund.c
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2014-2021 Taler Systems SA
+  Copyright (C) 2014-2022 Taler Systems SA
 
   TALER is free software; you can redistribute it and/or modify it under the
   terms of the GNU General Public License as published by the Free Software
@@ -445,17 +445,30 @@ verify_conflict_history_ok (struct 
TALER_EXCHANGE_RefundHandle *rh,
   {
     rtotal = rh->refund_amount;
   }
-  if (-1 == TALER_amount_cmp (&dtotal,
+  if ( (have_refund) && (! have_deposit) )
+  {
+    GNUNET_break (0);
+    GNUNET_JSON_parse_free (spec);
+    return GNUNET_SYSERR;
+  }
+  if (! (have_refund && have_deposit))
+  {
+    /* need both for a refund-deposit conflict proof */
+    GNUNET_break (0);
+    GNUNET_JSON_parse_free (spec);
+    return GNUNET_SYSERR;
+  }
+  if (-1 != TALER_amount_cmp (&dtotal,
                               &rtotal))
   {
-    /* dtotal < rtotal: good! */
+    /* rtotal <= dtotal is fine, no conflict! */
+    GNUNET_break_op (0);
     GNUNET_JSON_parse_free (spec);
-    return GNUNET_OK;
+    return GNUNET_SYSERR;
   }
-  /* this fails to prove a conflict */
-  GNUNET_break_op (0);
+  /* dtotal < rtotal: that's a conflict! */
   GNUNET_JSON_parse_free (spec);
-  return GNUNET_SYSERR;
+  return GNUNET_OK;
 }
 
 
diff --git a/src/lib/exchange_api_reserves_history.c 
b/src/lib/exchange_api_reserves_history.c
index 1d3891c2..2a0dd565 100644
--- a/src/lib/exchange_api_reserves_history.c
+++ b/src/lib/exchange_api_reserves_history.c
@@ -311,6 +311,7 @@ TALER_EXCHANGE_reserves_history (
   if (NULL == keys)
   {
     GNUNET_break (0);
+    curl_easy_cleanup (eh);
     GNUNET_free (rsh->url);
     GNUNET_free (rsh);
     return NULL;
@@ -320,6 +321,7 @@ TALER_EXCHANGE_reserves_history (
   if (NULL == gf)
   {
     GNUNET_break_op (0);
+    curl_easy_cleanup (eh);
     GNUNET_free (rsh->url);
     GNUNET_free (rsh);
     return NULL;
diff --git a/src/testing/testing_api_cmd_insert_deposit.c 
b/src/testing/testing_api_cmd_insert_deposit.c
index a82caa73..032ff72d 100644
--- a/src/testing/testing_api_cmd_insert_deposit.c
+++ b/src/testing/testing_api_cmd_insert_deposit.c
@@ -164,14 +164,16 @@ insert_deposit_run (void *cls,
           0,
           sizeof (deposit));
 
-  GNUNET_CRYPTO_kdf (&merchant_priv,
-                     sizeof (struct TALER_MerchantPrivateKeyP),
-                     "merchant-priv",
-                     strlen ("merchant-priv"),
-                     ids->merchant_name,
-                     strlen (ids->merchant_name),
-                     NULL,
-                     0);
+  GNUNET_assert (
+    GNUNET_YES ==
+    GNUNET_CRYPTO_kdf (&merchant_priv,
+                       sizeof (struct TALER_MerchantPrivateKeyP),
+                       "merchant-priv",
+                       strlen ("merchant-priv"),
+                       ids->merchant_name,
+                       strlen (ids->merchant_name),
+                       NULL,
+                       0));
   GNUNET_CRYPTO_eddsa_key_get_public (&merchant_priv.eddsa_priv,
                                       &deposit.merchant_pub.eddsa_pub);
   GNUNET_CRYPTO_hash_create_random (GNUNET_CRYPTO_QUALITY_WEAK,

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