From efa0ca4ec18d636f9950cb03a192cf9a6484fadb Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 5 Jun 2022 00:25:56 +0200
Subject: -move econtract into sub-object with its own parser

---
 src/json/json_helper.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/json/json_pack.c   | 34 ++++++++++++++++++++++
 2 files changed, 110 insertions(+)

(limited to 'src/json')

diff --git a/src/json/json_helper.c b/src/json/json_helper.c
index 50d4705d5..2e5241b5a 100644
--- a/src/json/json_helper.c
+++ b/src/json/json_helper.c
@@ -234,6 +234,82 @@ TALER_JSON_spec_amount_any_nbo (const char *name,
 }
 
 
+/**
+ * Parse given JSON object to an encrypted contract.
+ *
+ * @param cls closure, NULL
+ * @param root the json object representing data
+ * @param[out] spec where to write the data
+ * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error
+ */
+static enum GNUNET_GenericReturnValue
+parse_econtract (void *cls,
+                 json_t *root,
+                 struct GNUNET_JSON_Specification *spec)
+{
+  struct TALER_EncryptedContract *econtract = spec->ptr;
+  struct GNUNET_JSON_Specification ispec[] = {
+    GNUNET_JSON_spec_varsize ("econtract",
+                              &econtract->econtract,
+                              &econtract->econtract_size),
+    GNUNET_JSON_spec_fixed_auto ("econtract_sig",
+                                 &econtract->econtract_sig),
+    GNUNET_JSON_spec_fixed_auto ("contract_pub",
+                                 &econtract->contract_pub),
+    GNUNET_JSON_spec_end ()
+  };
+  const char *emsg;
+  unsigned int eline;
+
+  (void) cls;
+  if (GNUNET_OK !=
+      GNUNET_JSON_parse (root,
+                         ispec,
+                         &emsg,
+                         &eline))
+  {
+    GNUNET_break_op (0);
+    return GNUNET_SYSERR;
+  }
+  return GNUNET_OK;
+}
+
+
+/**
+ * Cleanup data left from parsing encrypted contract.
+ *
+ * @param cls closure, NULL
+ * @param[out] spec where to free the data
+ */
+static void
+clean_econtract (void *cls,
+                 struct GNUNET_JSON_Specification *spec)
+{
+  struct TALER_EncryptedContract *econtract = spec->ptr;
+
+  (void) cls;
+  GNUNET_free (econtract->econtract);
+}
+
+
+struct GNUNET_JSON_Specification
+TALER_JSON_spec_econtract (const char *name,
+                           struct TALER_EncryptedContract *econtract)
+{
+  struct GNUNET_JSON_Specification ret = {
+    .parser = &parse_econtract,
+    .cleaner = &clean_econtract,
+    .cls = NULL,
+    .field = name,
+    .ptr = econtract,
+    .ptr_size = 0,
+    .size_ptr = NULL
+  };
+
+  return ret;
+}
+
+
 /**
  * Parse given JSON object to denomination public key.
  *
diff --git a/src/json/json_pack.c b/src/json/json_pack.c
index ad41eb955..090a8b96b 100644
--- a/src/json/json_pack.c
+++ b/src/json/json_pack.c
@@ -47,6 +47,30 @@ TALER_JSON_pack_time_abs_nbo_human (const char *name,
 }
 
 
+struct GNUNET_JSON_PackSpec
+TALER_JSON_pack_econtract (
+  const char *name,
+  const struct TALER_EncryptedContract *econtract)
+{
+  struct GNUNET_JSON_PackSpec ps = {
+    .field_name = name,
+  };
+
+  if (NULL == econtract)
+    return ps;
+  ps.object
+    = GNUNET_JSON_PACK (
+        GNUNET_JSON_pack_data_varsize ("econtract",
+                                       econtract->econtract,
+                                       econtract->econtract_size),
+        GNUNET_JSON_pack_data_auto ("econtract_sig",
+                                    &econtract->econtract_sig),
+        GNUNET_JSON_pack_data_auto ("contract_pub",
+                                    &econtract->contract_pub));
+  return ps;
+}
+
+
 struct GNUNET_JSON_PackSpec
 TALER_JSON_pack_denom_pub (
   const char *name,
@@ -56,6 +80,8 @@ TALER_JSON_pack_denom_pub (
     .field_name = name,
   };
 
+  if (NULL == pk)
+    return ps;
   switch (pk->cipher)
   {
   case TALER_DENOMINATION_RSA:
@@ -95,6 +121,8 @@ TALER_JSON_pack_denom_sig (
     .field_name = name,
   };
 
+  if (NULL == sig)
+    return ps;
   switch (sig->cipher)
   {
   case TALER_DENOMINATION_RSA:
@@ -129,6 +157,8 @@ TALER_JSON_pack_exchange_withdraw_values (
     .field_name = name,
   };
 
+  if (NULL == ewv)
+    return ps;
   switch (ewv->cipher)
   {
   case TALER_DENOMINATION_RSA:
@@ -166,6 +196,8 @@ TALER_JSON_pack_blinded_denom_sig (
     .field_name = name,
   };
 
+  if (NULL == sig)
+    return ps;
   switch (sig->cipher)
   {
   case TALER_DENOMINATION_RSA:
@@ -200,6 +232,8 @@ TALER_JSON_pack_blinded_planchet (
     .field_name = name,
   };
 
+  if (NULL == blinded_planchet)
+    return ps;
   switch (blinded_planchet->cipher)
   {
   case TALER_DENOMINATION_RSA:
-- 
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