1 files changed, 214 insertions, 0 deletions
diff --git a/src/pq/pq_helper.c b/src/pq/pq_helper.c
new file mode 100644
index 000000000..b172a94bf
--- /dev/null
+++ b/src/pq/pq_helper.c
@@ -0,0 +1,214 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
+
+  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
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file pq/pq_helper.c
+ * @brief functions to initialize parameter arrays 
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_pq_lib.h"
+
+
+/**
+ * Generate query parameter for a currency, consisting of the three
+ * components "value", "fraction" and "currency" in this order. The
+ * types must be a 64-bit integer, 32-bit integer and a
+ * #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
+ *
+ * @param x pointer to the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct TALER_PQ_QueryParam
+TALER_PQ_QUERY_PARAM_AMOUNT_NBO (const struct TALER_AmountNBO *x)
+{
+  struct TALER_PQ_QueryParam res =
+    { TALER_PQ_QF_AMOUNT_NBO, x, sizeof (*x) };
+  return res;
+}
+	    
+
+/**
+ * Generate query parameter for a currency, consisting of the three
+ * components "value", "fraction" and "currency" in this order. The
+ * types must be a 64-bit integer, 32-bit integer and a
+ * #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
+ *
+ * @param x pointer to the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct TALER_PQ_QueryParam
+TALER_PQ_QUERY_PARAM_AMOUNT (const struct TALER_Amount *x)
+{
+  struct TALER_PQ_QueryParam res =
+    { TALER_PQ_QF_AMOUNT, x, sizeof (*x) };
+  return res;
+}
+
+
+/**
+ * Generate query parameter for an RSA public key.  The
+ * database must contain a BLOB type in the respective position.
+ *
+ * @param x the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct TALER_PQ_QueryParam
+TALER_PQ_QUERY_PARAM_RSA_PUBLIC_KEY (const struct GNUNET_CRYPTO_rsa_PublicKey *x)
+{
+  struct TALER_PQ_QueryParam res =
+    { TALER_PQ_QF_RSA_PUBLIC_KEY, (x), 0 };
+  return res;
+}
+
+
+/**
+ * Generate query parameter for an RSA signature.  The
+ * database must contain a BLOB type in the respective position.
+ *
+ * @param x the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct TALER_PQ_QueryParam
+TALER_PQ_QUERY_PARAM_RSA_SIGNATURE (const struct GNUNET_CRYPTO_rsa_Signature *x)
+{
+  struct TALER_PQ_QueryParam res =
+    { TALER_PQ_QF_RSA_SIGNATURE, (x), 0 };
+  return res;
+}
+
+
+/**
+ * Generate query parameter for an absolute time value.
+ * The database must store a 64-bit integer.
+ *
+ * @param x pointer to the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct TALER_PQ_QueryParam
+TALER_PQ_QUERY_PARAM_ABSOLUTE_TIME (struct GNUNET_TIME_Absolute x)
+{
+  struct TALER_PQ_QueryParam res =
+    { TALER_PQ_QF_TIME_ABSOLUTE, &(x), sizeof (x) };
+  return res;
+}
+
+
+/**
+ * Variable-size result expected.
+ *
+ * @param name name of the field in the table
+ * @param[out] dst where to store the result, allocated
+ * @param[out] sptr where to store the size of @a dst
+ * @return array entry for the result specification to use
+ */
+struct TALER_PQ_ResultSpec
+TALER_PQ_RESULT_SPEC_VAR (const char *name,
+			  void **dst,
+			  size_t *sptr)
+{
+  struct TALER_PQ_ResultSpec res = 
+    { TALER_PQ_RF_VARSIZE_BLOB, (void *) (dst), 0, (name), sptr };
+  return res;
+}
+
+
+/**
+ * Currency amount expected.
+ *
+ * @param name name of the field in the table
+ * @param[out] amount where to store the result
+ * @return array entry for the result specification to use
+ */
+struct TALER_PQ_ResultSpec
+TALER_PQ_RESULT_SPEC_AMOUNT_NBO (const char *name,
+				 struct TALER_AmountNBO *amount)
+{
+  struct TALER_PQ_ResultSpec res = 
+    {TALER_PQ_RF_AMOUNT_NBO, (void *) (&amount), sizeof (amount), (name), NULL };
+  return res;
+}
+
+
+/**
+ * Currency amount expected.
+ *
+ * @param name name of the field in the table
+ * @param[out] amount where to store the result
+ * @return array entry for the result specification to use
+ */
+struct TALER_PQ_ResultSpec
+TALER_PQ_RESULT_SPEC_AMOUNT (const char *name,
+			     struct TALER_Amount *amount)
+{
+  struct TALER_PQ_ResultSpec res = 
+    {TALER_PQ_RF_AMOUNT, (void *) (&amount), sizeof (amount), (name), NULL };
+  return res;
+}
+
+
+/**
+ * RSA public key expected.
+ *
+ * @param name name of the field in the table
+ * @param[out] rsa where to store the result
+ * @return array entry for the result specification to use
+ */
+struct TALER_PQ_ResultSpec
+TALER_PQ_RESULT_SPEC_RSA_PUBLIC_KEY (const char *name,
+				     struct GNUNET_CRYPTO_rsa_PublicKey **rsa)
+{
+  struct TALER_PQ_ResultSpec res = 
+    {TALER_PQ_RF_RSA_PUBLIC_KEY, (void *) &(rsa), 0, (name), NULL };
+  return res;
+}
+ 
+
+/**
+ * RSA signature expected.
+ *
+ * @param name name of the field in the table
+ * @param[out] sig where to store the result;
+ * @return array entry for the result specification to use
+ */
+struct TALER_PQ_ResultSpec
+TALER_PQ_RESULT_SPEC_RSA_SIGNATURE (const char *name,
+				    struct GNUNET_CRYPTO_rsa_Signature **sig)
+{
+  struct TALER_PQ_ResultSpec res = 
+    {TALER_PQ_RF_RSA_SIGNATURE, (void *) &(sig), 0, (name), NULL };
+  return res;
+}
+
+  
+/**
+ * Absolute time expected.
+ *
+ * @param name name of the field in the table
+ * @param[out] at where to store the result
+ * @return array entry for the result specification to use
+ */
+struct TALER_PQ_ResultSpec
+TALER_PQ_RESULT_SPEC_ABSOLUTE_TIME (const char *name,
+				    struct GNUNET_TIME_Absolute *at)
+{
+  struct TALER_PQ_ResultSpec res = 
+    {TALER_PQ_RF_TIME_ABSOLUTE, (void *) (&at), sizeof (at), (name), NULL };
+  return res;
+}
+  
+
+/* end of pq_helper.c */