From 38876c503ff53f7adf44bc82be4fec3ae9b02d01 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 15 Oct 2022 16:19:14 +0200
Subject: -refactor DB for reserve history/status routines

---
 src/util/exchange_signatures.c | 94 ++++++++++++++++++++++++++++++++++++++++++
 src/util/wallet_signatures.c   |  2 +-
 2 files changed, 95 insertions(+), 1 deletion(-)

(limited to 'src/util')

diff --git a/src/util/exchange_signatures.c b/src/util/exchange_signatures.c
index d42f70d66..8ecb3cafe 100644
--- a/src/util/exchange_signatures.c
+++ b/src/util/exchange_signatures.c
@@ -1379,6 +1379,100 @@ TALER_exchange_online_purse_created_verify (
 }
 
 
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Response by which the exchange affirms that it has
+ * received funds deposited into a purse.
+ */
+struct TALER_CoinPurseRefundConfirmationPS
+{
+
+  /**
+   * Purpose is #TALER_SIGNATURE_EXCHANGE_CONFIRM_PURSE_REFUND
+   */
+  struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
+
+  /**
+   * Public key of the purse.
+   */
+  struct TALER_PurseContractPublicKeyP purse_pub;
+
+  /**
+   * Public key of the coin.
+   */
+  struct TALER_CoinSpendPublicKeyP coin_pub;
+
+  /**
+   * How much will be refunded to the purse.
+   */
+  struct TALER_AmountNBO refunded_amount;
+
+  /**
+   * How much was the refund fee.
+   */
+  struct TALER_AmountNBO refund_fee;
+
+};
+
+GNUNET_NETWORK_STRUCT_END
+
+
+enum TALER_ErrorCode
+TALER_exchange_online_purse_refund_sign (
+  TALER_ExchangeSignCallback scb,
+  const struct TALER_Amount *amount_without_fee,
+  const struct TALER_Amount *refund_fee,
+  const struct TALER_CoinSpendPublicKeyP *coin_pub,
+  const struct TALER_PurseContractPublicKeyP *purse_pub,
+  struct TALER_ExchangePublicKeyP *pub,
+  struct TALER_ExchangeSignatureP *sig)
+{
+  struct TALER_CoinPurseRefundConfirmationPS dc = {
+    .purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_PURSE_REFUND),
+    .purpose.size = htonl (sizeof (dc)),
+    .coin_pub = *coin_pub,
+    .purse_pub = *purse_pub,
+  };
+
+  TALER_amount_hton (&dc.refunded_amount,
+                     amount_without_fee);
+  TALER_amount_hton (&dc.refund_fee,
+                     refund_fee);
+  return scb (&dc.purpose,
+              pub,
+              sig);
+}
+
+
+enum GNUNET_GenericReturnValue
+TALER_exchange_online_purse_refund_verify (
+  const struct TALER_Amount *amount_without_fee,
+  const struct TALER_Amount *refund_fee,
+  const struct TALER_CoinSpendPublicKeyP *coin_pub,
+  const struct TALER_PurseContractPublicKeyP *purse_pub,
+  const struct TALER_ExchangePublicKeyP *pub,
+  const struct TALER_ExchangeSignatureP *sig)
+{
+  struct TALER_CoinPurseRefundConfirmationPS dc = {
+    .purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_PURSE_REFUND),
+    .purpose.size = htonl (sizeof (dc)),
+    .coin_pub = *coin_pub,
+    .purse_pub = *purse_pub,
+  };
+
+  TALER_amount_hton (&dc.refunded_amount,
+                     amount_without_fee);
+  TALER_amount_hton (&dc.refund_fee,
+                     refund_fee);
+  return
+    GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_EXCHANGE_CONFIRM_PURSE_REFUND,
+                                &dc,
+                                &sig->eddsa_signature,
+                                &pub->eddsa_pub);
+}
+
+
 GNUNET_NETWORK_STRUCT_BEGIN
 
 /**
diff --git a/src/util/wallet_signatures.c b/src/util/wallet_signatures.c
index c57506bd8..1209bb699 100644
--- a/src/util/wallet_signatures.c
+++ b/src/util/wallet_signatures.c
@@ -1422,7 +1422,7 @@ struct TALER_ReserveClosePS
   /**
    * Hash of the payto://-URI of the target account
    * for the closure, or all zeros for the reserve
-   * origina ccount.
+   * origin account.
    */
   struct TALER_PaytoHashP target_account_h_payto;
 
-- 
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