From 4b748acb26818b75c2760e4218388cdafb5a771b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20Bl=C3=A4ttler?= <blatc2@bfh.ch>
Date: Sat, 11 May 2024 16:01:55 +0200
Subject: use gnunet json helper for blinded signature

---
 src/json/json_helper.c | 121 +------------------------------------------------
 1 file changed, 2 insertions(+), 119 deletions(-)

diff --git a/src/json/json_helper.c b/src/json/json_helper.c
index 7cad6a38c..2ade19446 100644
--- a/src/json/json_helper.c
+++ b/src/json/json_helper.c
@@ -802,131 +802,14 @@ TALER_JSON_spec_denom_sig (const char *field,
 }
 
 
-/**
- * Parse given JSON object to blinded denomination signature.
- *
- * @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_blinded_denom_sig (void *cls,
-                         json_t *root,
-                         struct GNUNET_JSON_Specification *spec)
-{
-  struct TALER_BlindedDenominationSignature *denom_sig = spec->ptr;
-  struct GNUNET_CRYPTO_BlindedSignature *blinded_sig;
-  const char *cipher;
-  struct GNUNET_JSON_Specification dspec[] = {
-    GNUNET_JSON_spec_string ("cipher",
-                             &cipher),
-    GNUNET_JSON_spec_end ()
-  };
-  const char *emsg;
-  unsigned int eline;
-
-  (void) cls;
-  if (GNUNET_OK !=
-      GNUNET_JSON_parse (root,
-                         dspec,
-                         &emsg,
-                         &eline))
-  {
-    GNUNET_break_op (0);
-    return GNUNET_SYSERR;
-  }
-  blinded_sig = GNUNET_new (struct GNUNET_CRYPTO_BlindedSignature);
-  blinded_sig->cipher = string_to_cipher (cipher);
-  blinded_sig->rc = 1;
-  switch (blinded_sig->cipher)
-  {
-  case GNUNET_CRYPTO_BSA_INVALID:
-    break;
-  case GNUNET_CRYPTO_BSA_RSA:
-    {
-      struct GNUNET_JSON_Specification ispec[] = {
-        GNUNET_JSON_spec_rsa_signature (
-          "blinded_rsa_signature",
-          &blinded_sig->details.blinded_rsa_signature),
-        GNUNET_JSON_spec_end ()
-      };
-
-      if (GNUNET_OK !=
-          GNUNET_JSON_parse (root,
-                             ispec,
-                             &emsg,
-                             &eline))
-      {
-        GNUNET_break_op (0);
-        GNUNET_free (blinded_sig);
-        return GNUNET_SYSERR;
-      }
-      denom_sig->blinded_sig = blinded_sig;
-      return GNUNET_OK;
-    }
-  case GNUNET_CRYPTO_BSA_CS:
-    {
-      struct GNUNET_JSON_Specification ispec[] = {
-        GNUNET_JSON_spec_uint32 ("b",
-                                 &blinded_sig->details.blinded_cs_answer.b),
-        GNUNET_JSON_spec_fixed_auto ("s",
-                                     &blinded_sig->details.blinded_cs_answer.
-                                     s_scalar),
-        GNUNET_JSON_spec_end ()
-      };
-
-      if (GNUNET_OK !=
-          GNUNET_JSON_parse (root,
-                             ispec,
-                             &emsg,
-                             &eline))
-      {
-        GNUNET_break_op (0);
-        GNUNET_free (blinded_sig);
-        return GNUNET_SYSERR;
-      }
-      denom_sig->blinded_sig = blinded_sig;
-      return GNUNET_OK;
-    }
-  }
-  GNUNET_break_op (0);
-  GNUNET_free (blinded_sig);
-  return GNUNET_SYSERR;
-}
-
-
-/**
- * Cleanup data left from parsing denomination public key.
- *
- * @param cls closure, NULL
- * @param[out] spec where to free the data
- */
-static void
-clean_blinded_denom_sig (void *cls,
-                         struct GNUNET_JSON_Specification *spec)
-{
-  struct TALER_BlindedDenominationSignature *denom_sig = spec->ptr;
-
-  (void) cls;
-  TALER_blinded_denom_sig_free (denom_sig);
-}
-
-
 struct GNUNET_JSON_Specification
 TALER_JSON_spec_blinded_denom_sig (
   const char *field,
   struct TALER_BlindedDenominationSignature *sig)
 {
-  struct GNUNET_JSON_Specification ret = {
-    .parser = &parse_blinded_denom_sig,
-    .cleaner = &clean_blinded_denom_sig,
-    .field = field,
-    .ptr = sig
-  };
-
   sig->blinded_sig = NULL;
-  return ret;
+  return GNUNET_JSON_spec_blinded_signature (field,
+                                             &sig->blinded_sig);
 }
 
 
-- 
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