From e4e8fe6c7c57305e3d2118b81c186ded6c6b1f3c Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 9 Mar 2015 13:04:51 +0100
Subject: add withdraw proof to reserve history json

---
 src/mint/mint_db.h                    |  8 +++++++-
 src/mint/taler-mint-httpd_db.c        |  5 ++++-
 src/mint/taler-mint-httpd_responses.c | 15 ++++++++++++++-
 3 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/mint/mint_db.h b/src/mint/mint_db.h
index c3a300a57..48fb5ea39 100644
--- a/src/mint/mint_db.h
+++ b/src/mint/mint_db.h
@@ -182,9 +182,15 @@ struct CollectableBlindcoin
    */
   struct GNUNET_CRYPTO_EddsaPublicKey reserve_pub;
 
+  /**
+   * Hash over the blinded message, needed to verify
+   * the @e reserve_sig.
+   */
+  struct GNUNET_HashCode h_coin_envelope;
+
   /**
    * Signature confirming the withdrawl, matching @e reserve_pub,
-   * @e denom_pub and @e h_blind.
+   * @e denom_pub and @e h_coin_envelope.
    */
   struct GNUNET_CRYPTO_EddsaSignature reserve_sig;
 };
diff --git a/src/mint/taler-mint-httpd_db.c b/src/mint/taler-mint-httpd_db.c
index ed9119313..b20e88494 100644
--- a/src/mint/taler-mint-httpd_db.c
+++ b/src/mint/taler-mint-httpd_db.c
@@ -378,9 +378,12 @@ TALER_MINT_db_execute_withdraw_sign (struct MHD_Connection *connection,
     return TALER_MINT_reply_internal_error (connection,
                                             "Internal error");
   }
-  collectable.denom_pub = (struct GNUNET_CRYPTO_rsa_PublicKey *) denomination_pub;
   collectable.sig = sig;
+  collectable.denom_pub = (struct GNUNET_CRYPTO_rsa_PublicKey *) denomination_pub;
   collectable.reserve_pub = *reserve;
+  GNUNET_CRYPTO_hash (blinded_msg,
+                      blinded_msg_len,
+                      &collectable.h_coin_envelope);
   collectable.reserve_sig = *signature;
   if (GNUNET_OK !=
       TALER_MINT_DB_insert_collectable_blindcoin (db_conn,
diff --git a/src/mint/taler-mint-httpd_responses.c b/src/mint/taler-mint-httpd_responses.c
index ec8fdc03b..9af372995 100644
--- a/src/mint/taler-mint-httpd_responses.c
+++ b/src/mint/taler-mint-httpd_responses.c
@@ -418,10 +418,12 @@ compile_reserve_history (const struct ReserveHistory *rh,
   struct TALER_Amount withdraw_total;
   struct TALER_Amount value;
   json_t *json_history;
+  json_t *transaction;
   int ret;
   const struct ReserveHistory *pos;
   struct TALER_MINT_DenomKeyIssuePriv *dki;
   struct MintKeyState *key_state;
+  struct TALER_WithdrawRequest wr;
 
   json_history = json_array ();
   ret = 0;
@@ -456,6 +458,7 @@ compile_reserve_history (const struct ReserveHistory *rh,
     case TALER_MINT_DB_RO_BANK_TO_MINT:
       break;
     case TALER_MINT_DB_RO_WITHDRAW_COIN:
+
       dki = TALER_MINT_get_denom_key (key_state,
                                       pos->details.withdraw->denom_pub);
       value = TALER_amount_ntoh (dki->issue.value);
@@ -465,10 +468,20 @@ compile_reserve_history (const struct ReserveHistory *rh,
         withdraw_total = TALER_amount_add (withdraw_total,
                                            value);
       ret = 1;
-      /* FIXME: add `struct CollectableBlindcoin` as JSON here as well! (#3527) */
+      wr.purpose.purpose = htonl (TALER_SIGNATURE_WITHDRAW);
+      wr.purpose.size = htonl (sizeof (struct TALER_WithdrawRequest));
+      wr.reserve_pub = pos->details.withdraw->reserve_pub;
+      GNUNET_CRYPTO_rsa_public_key_hash (pos->details.withdraw->denom_pub,
+                                         &wr.h_denomination_pub);
+      wr.h_coin_envelope = pos->details.withdraw->h_coin_envelope;
+
+      transaction = TALER_JSON_from_eddsa_sig (&wr.purpose,
+                                               &pos->details.withdraw->reserve_sig);
+
       json_array_append_new (json_history,
                              json_pack ("{s:s, s:o, s:o}",
                                         "type", "WITHDRAW",
+                                        "signature", transaction,
                                         "amount", TALER_JSON_from_amount (value)));
 
       break;
-- 
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