check tokens on idempotent pay request

1 files changed, 38 insertions, 0 deletions

diff --git a/src/include/taler_merchantdb_plugin.h b/src/include/taler_merchantdb_plugin.h
index 329975fa..aac39d17 100644
--- a/src/include/taler_merchantdb_plugin.h
+++ b/src/include/taler_merchantdb_plugin.h
@@ -1132,6 +1132,27 @@ struct TALER_MERCHANTDB_SpentTokenDetails
 
 
 /**
+ * Function called with information about a token that was used.
+ *
+ * @param cls closure
+ * @param spent_token_serial which used token is this about
+ * @param h_contract_terms hash of the contract terms this token was used on
+ * @param h_issue_pub hash of the token issue public key
+ * @param use_pub token use public key
+ * @param use_sig token use signature
+ * @param issue_sig unblinded token issue signature
+ */
+typedef void
+(*TALER_MERCHANTDB_UsedTokensCallback)(
+  void *cls,
+  uint64_t spent_token_serial,
+  const struct TALER_PrivateContractHashP *h_contract_terms,
+  const struct TALER_TokenIssuePublicKeyHashP *h_issue_pub,
+  const struct TALER_TokenUsePublicKeyP *use_pub,
+  const struct TALER_TokenUseSignatureP *use_sig,
+  const struct TALER_TokenIssueSignatureP *issue_sig);
+
+/**
  * Handle to interact with the database.
  *
  * Functions ending with "_TR" run their OWN transaction scope
@@ -2127,6 +2148,23 @@ struct TALER_MERCHANTDB_Plugin
                     void *rc_cls);
 
 
+
+  /**
+   * Retrieve details about tokens that were used for an order.
+   *
+   * @param cls closure
+   * @param order_serial identifies the order
+   * @param cb function to call for each used token
+   * @param cb_cls closure for @a cb
+   * @return transaction status
+   */
+  enum GNUNET_DB_QueryStatus
+  (*lookup_spent_tokens_by_order) (void *cls,
+                                   uint64_t order_serial,
+                                   TALER_MERCHANTDB_UsedTokensCallback cb,
+                                   void *cb_cls);
+
+
   /**
    * Mark contract as paid and store the current @a session_id
    * for which the contract was paid. Deletes the underlying order