JSON: implement taler-specific json pack functions

src/include/taler_json_lib.h

@@ -37,6 +37,117 @@
               "JSON parsing failed at %s:%u: %s (%s)\n",                  \
               __FILE__, __LINE__, error.text, error.source)
 
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * absolute time.
+ * The absolute time value is expected to be already rounded.
+ *
+ * @param name name of the field to add to the object
+ * @param at absolute time to pack
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_abs (const char *name,
+                          struct GNUNET_TIME_Absolute at);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * absolute time in network byte order.
+ * The absolute time value is expected to be already rounded.
+ *
+ * @param name name of the field to add to the object
+ * @param at absolute time to pack
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_abs_nbo (const char *name,
+                              struct GNUNET_TIME_AbsoluteNBO at);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * relative time.
+ * The relative time value is expected to be already rounded.
+ *
+ * @param name name of the field to add to the object
+ * @param rt relative time to pack
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_rel (const char *name,
+                          struct GNUNET_TIME_Relative rt);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * relative time in network byte order.
+ * The relative time value is expected to be already rounded.
+ *
+ * @param name name of the field to add to the object
+ * @param rt relative time to pack
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_rel_nbo (const char *name,
+                              struct GNUNET_TIME_RelativeNBO rt);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * denomination public key.
+ *
+ * @param name name of the field to add to the object
+ * @param pk public key
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_denomination_public_key (const char *name,
+                                         const struct
+                                         TALER_DenominationPublicKey *pk);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * denomination signature.
+ *
+ * @param name name of the field to add to the object
+ * @param sig signature
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_denomination_signature (const char *name,
+                                        const struct
+                                        TALER_DenominationSignature *sig);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * amount.
+ *
+ * @param name name of the field to add to the object
+ * @param amount valid amount to pack
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_amount (const char *name,
+                        const struct TALER_Amount *amount);
+
+
+/**
+ * Generate packer instruction for a JSON field of type
+ * amount.
+ *
+ * @param name name of the field to add to the object
+ * @param amount valid amount to pack
+ * @return json pack specification
+ */
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_amount_nbo (const char *name,
+                            const struct TALER_AmountNBO *amount);
+
+
 /**
  * Convert a TALER amount to a JSON object.
  *

src/json/Makefile.am

@@ -13,6 +13,7 @@ libtalerjson_la_SOURCES = \
   i18n.c \
   json.c \
   json_helper.c \
+  json_pack.c \
   json_wire.c
 libtalerjson_la_LDFLAGS = \
   -version-info 1:0:1 \

src/json/json_pack.c

@@ -0,0 +1,113 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2021 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
+  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, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file json/json_pack.c
+ * @brief helper functions for JSON object packing
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_util.h"
+#include "taler_json_lib.h"
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_abs (const char *name,
+                          struct GNUNET_TIME_Absolute at)
+{
+  GNUNET_assert (GNUNET_OK ==
+                 GNUNET_TIME_round_abs (&at));
+  return GNUNET_JSON_pack_time_abs (name,
+                                    at);
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_abs_nbo (const char *name,
+                              struct GNUNET_TIME_AbsoluteNBO at)
+{
+  return TALER_JSON_pack_time_abs (name,
+                                   GNUNET_TIME_absolute_ntoh (at));
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_rel (const char *name,
+                          struct GNUNET_TIME_Relative rt)
+{
+  GNUNET_assert (GNUNET_OK ==
+                 GNUNET_TIME_round_rel (&rt));
+  return GNUNET_JSON_pack_time_rel (name,
+                                    rt);
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_time_rel_nbo (const char *name,
+                              struct GNUNET_TIME_RelativeNBO rt)
+{
+  return TALER_JSON_pack_time_rel (name,
+                                   GNUNET_TIME_relative_ntoh (rt));
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_denomination_public_key (const char *name,
+                                         const struct
+                                         TALER_DenominationPublicKey *pk)
+{
+  return GNUNET_JSON_pack_rsa_public_key (name,
+                                          pk->rsa_public_key);
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_denomination_signature (const char *name,
+                                        const struct
+                                        TALER_DenominationSignature *sig)
+{
+  return GNUNET_JSON_pack_rsa_signature (name,
+                                         sig->rsa_signature);
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_amount (const char *name,
+                        const struct TALER_Amount *amount)
+{
+  json_t *json;
+
+  json = TALER_JSON_from_amount (amount);
+  GNUNET_assert (NULL != json);
+  return GNUNET_JSON_pack_object_steal (name,
+                                        json);
+}
+
+
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_amount_nbo (const char *name,
+                            const struct TALER_AmountNBO *amount)
+{
+  json_t *json;
+
+  json = TALER_JSON_from_amount_nbo (amount);
+  GNUNET_assert (NULL != json);
+  return GNUNET_JSON_pack_object_steal (name,
+                                        json);
+}
+
+
+/* End of json/json_pack.c */