[taler-exchange] branch master updated: -refactor internal API to use new EncrptedContract struct where applicable

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grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 21a1c715 -refactor internal API to use new EncrptedContract struct 
where applicable
21a1c715 is described below

commit 21a1c715ee2578b0cb7738a46117552674f0a294
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Sun Jun 5 00:36:19 2022 +0200

    -refactor internal API to use new EncrptedContract struct where applicable
---
 src/exchange/taler-exchange-httpd_purses_create.c  | 12 +----
 src/exchange/taler-exchange-httpd_reserves_purse.c | 13 +----
 src/exchangedb/plugin_exchangedb_postgres.c        | 62 ++++++++--------------
 src/include/taler_exchangedb_plugin.h              | 18 ++-----
 src/lib/exchange_api_purse_create_with_deposit.c   |  5 +-
 5 files changed, 33 insertions(+), 77 deletions(-)

diff --git a/src/exchange/taler-exchange-httpd_purses_create.c 
b/src/exchange/taler-exchange-httpd_purses_create.c
index 65cd5d45..434984d8 100644
--- a/src/exchange/taler-exchange-httpd_purses_create.c
+++ b/src/exchange/taler-exchange-httpd_purses_create.c
@@ -369,13 +369,9 @@ create_transaction (void *cls,
   }
   /* 3) if present, persist contract */
   in_conflict = true;
-  // FIXME: combine econtract arguments into one!
   qs = TEH_plugin->insert_contract (TEH_plugin->cls,
                                     pcc->purse_pub,
-                                    &pcc->econtract.contract_pub,
-                                    pcc->econtract.econtract_size,
-                                    pcc->econtract.econtract,
-                                    &pcc->econtract.econtract_sig,
+                                    &pcc->econtract,
                                     &in_conflict);
   if (qs < 0)
   {
@@ -393,14 +389,10 @@ create_transaction (void *cls,
     struct TALER_EncryptedContract econtract;
     struct GNUNET_HashCode h_econtract;
 
-    // FIXME: combine econtract arguments into one!
     qs = TEH_plugin->select_contract_by_purse (
       TEH_plugin->cls,
       pcc->purse_pub,
-      &econtract.contract_pub,
-      &econtract.econtract_sig,
-      &econtract.econtract_size,
-      &econtract.econtract);
+      &econtract);
     if (qs <= 0)
     {
       if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
diff --git a/src/exchange/taler-exchange-httpd_reserves_purse.c 
b/src/exchange/taler-exchange-httpd_reserves_purse.c
index af86bc91..74291976 100644
--- a/src/exchange/taler-exchange-httpd_reserves_purse.c
+++ b/src/exchange/taler-exchange-httpd_reserves_purse.c
@@ -411,13 +411,9 @@ purse_transaction (void *cls,
   {
     bool in_conflict = true;
 
-    // FIXME: combine econtract args!
     qs = TEH_plugin->insert_contract (TEH_plugin->cls,
                                       &rpc->purse_pub,
-                                      &rpc->econtract.contract_pub,
-                                      rpc->econtract.econtract_size,
-                                      rpc->econtract.econtract,
-                                      &rpc->econtract.econtract_sig,
+                                      &rpc->econtract,
                                       &in_conflict);
     if (qs < 0)
     {
@@ -435,15 +431,10 @@ purse_transaction (void *cls,
       struct TALER_EncryptedContract econtract;
       struct GNUNET_HashCode h_econtract;
 
-      /* FIXME: change API to only pass econtract
-         instead of all members! */
       qs = TEH_plugin->select_contract_by_purse (
         TEH_plugin->cls,
         &rpc->purse_pub,
-        &econtract.contract_pub,
-        &econtract.econtract_sig,
-        &econtract.econtract_size,
-        &econtract.econtract);
+        &econtract);
       if (qs <= 0)
       {
         if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
diff --git a/src/exchangedb/plugin_exchangedb_postgres.c 
b/src/exchangedb/plugin_exchangedb_postgres.c
index 9fcd6203..b259e351 100644
--- a/src/exchangedb/plugin_exchangedb_postgres.c
+++ b/src/exchangedb/plugin_exchangedb_postgres.c
@@ -13959,21 +13959,14 @@ postgres_select_contract (void *cls,
  *
  * @param cls the @e cls of this struct with the plugin-specific state
  * @param purse_pub key to lookup the contract by
- * @param[out] pub_ckey set to the ephemeral DH used to encrypt the contract
- * @param[out] econtract_sig set to the signature over the encrypted contract
- * @param[out] econtract_size set to the number of bytes in @a econtract
  * @param[out] econtract set to the encrypted contract on success, to be freed 
by the caller
  * @return transaction status code
  */
 static enum GNUNET_DB_QueryStatus
-postgres_select_contract_by_purse (void *cls,
-                                   const struct
-                                   TALER_PurseContractPublicKeyP *purse_pub,
-                                   struct TALER_ContractDiffiePublicP 
*pub_ckey,
-                                   struct TALER_PurseContractSignatureP *
-                                   econtract_sig,
-                                   size_t *econtract_size,
-                                   void **econtract)
+postgres_select_contract_by_purse (
+  void *cls,
+  const struct TALER_PurseContractPublicKeyP *purse_pub,
+  struct TALER_EncryptedContract *econtract)
 {
   struct PostgresClosure *pg = cls;
   struct GNUNET_PQ_QueryParam params[] = {
@@ -13982,12 +13975,12 @@ postgres_select_contract_by_purse (void *cls,
   };
   struct GNUNET_PQ_ResultSpec rs[] = {
     GNUNET_PQ_result_spec_auto_from_type ("pub_ckey",
-                                          pub_ckey),
+                                          &econtract->contract_pub),
     GNUNET_PQ_result_spec_auto_from_type ("contract_sig",
-                                          econtract_sig),
+                                          &econtract->econtract_sig),
     GNUNET_PQ_result_spec_variable_size ("e_contract",
-                                         econtract,
-                                         econtract_size),
+                                         &econtract->econtract,
+                                         &econtract->econtract_size),
     GNUNET_PQ_result_spec_end
   };
 
@@ -14004,10 +13997,7 @@ postgres_select_contract_by_purse (void *cls,
  *
  * @param cls the @e cls of this struct with the plugin-specific state
  * @param purse_pub the purse the contract is associated with (must exist)
- * @param pub_ckey ephemeral key for DH used to encrypt the contract
- * @param econtract_size number of bytes in @a econtract
  * @param econtract the encrypted contract
- * @param[out] econtract_sig set to the signature over the encrypted contract
  * @param[out] in_conflict set to true if @a econtract
  *             conflicts with an existing contract;
  *             in this case, the return value will be
@@ -14018,20 +14008,17 @@ static enum GNUNET_DB_QueryStatus
 postgres_insert_contract (
   void *cls,
   const struct TALER_PurseContractPublicKeyP *purse_pub,
-  const struct TALER_ContractDiffiePublicP *pub_ckey,
-  size_t econtract_size,
-  const void *econtract,
-  const struct TALER_PurseContractSignatureP *econtract_sig,
+  const struct TALER_EncryptedContract *econtract,
   bool *in_conflict)
 {
   struct PostgresClosure *pg = cls;
   enum GNUNET_DB_QueryStatus qs;
   struct GNUNET_PQ_QueryParam params[] = {
     GNUNET_PQ_query_param_auto_from_type (purse_pub),
-    GNUNET_PQ_query_param_auto_from_type (pub_ckey),
-    GNUNET_PQ_query_param_fixed_size (econtract,
-                                      econtract_size),
-    GNUNET_PQ_query_param_auto_from_type (econtract_sig),
+    GNUNET_PQ_query_param_auto_from_type (&econtract->contract_pub),
+    GNUNET_PQ_query_param_fixed_size (econtract->econtract,
+                                      econtract->econtract_size),
+    GNUNET_PQ_query_param_auto_from_type (&econtract->econtract_sig),
     GNUNET_PQ_query_param_end
   };
 
@@ -14042,31 +14029,28 @@ postgres_insert_contract (
   if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS != qs)
     return qs;
   {
-    struct TALER_ContractDiffiePublicP pub_ckey2;
-    struct TALER_PurseContractSignatureP esig2;
-    size_t econtract_size2;
-    void *econtract2;
+    struct TALER_EncryptedContract econtract2;
 
     qs = postgres_select_contract_by_purse (pg,
                                             purse_pub,
-                                            &pub_ckey2,
-                                            &esig2,
-                                            &econtract_size2,
                                             &econtract2);
     if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
     {
       GNUNET_break (0);
       return GNUNET_DB_STATUS_HARD_ERROR;
     }
-    if ( (0 == GNUNET_memcmp (&pub_ckey2,
-                              pub_ckey)) &&
-         (econtract_size2 == econtract_size) &&
-         (0 == memcmp (econtract2,
-                       econtract,
-                       econtract_size)) )
+    if ( (0 == GNUNET_memcmp (&econtract->contract_pub,
+                              &econtract2.contract_pub)) &&
+         (econtract2.econtract_size ==
+          econtract->econtract_size) &&
+         (0 == memcmp (econtract2.econtract,
+                       econtract->econtract,
+                       econtract->econtract_size)) )
     {
+      GNUNET_free (econtract2.econtract);
       return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
     }
+    GNUNET_free (econtract2.econtract);
     *in_conflict = true;
     return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
   }
diff --git a/src/include/taler_exchangedb_plugin.h 
b/src/include/taler_exchangedb_plugin.h
index 39417775..15f5661d 100644
--- a/src/include/taler_exchangedb_plugin.h
+++ b/src/include/taler_exchangedb_plugin.h
@@ -24,6 +24,7 @@
 #include <jansson.h>
 #include <gnunet/gnunet_util_lib.h>
 #include <gnunet/gnunet_db_lib.h>
+#include "taler_json_lib.h"
 #include "taler_signatures.h"
 
 
@@ -4779,9 +4780,6 @@ struct TALER_EXCHANGEDB_Plugin
    * Function called to persist an encrypted contract associated with a 
reserve.
    *
    * @param cls the @e cls of this struct with the plugin-specific state
-   * @param purse_pub the purse the contract is associated with (must exist)
-   * @param pub_ckey ephemeral key for DH used to encrypt the contract
-   * @param econtract_size number of bytes in @a econtract
    * @param econtract the encrypted contract
    * @param[out] econtract_sig set to the signature over the encrypted contract
    * @param[out] in_conflict set to true if @a econtract
@@ -4793,10 +4791,7 @@ struct TALER_EXCHANGEDB_Plugin
   enum GNUNET_DB_QueryStatus
   (*insert_contract)(void *cls,
                      const struct TALER_PurseContractPublicKeyP *purse_pub,
-                     const struct TALER_ContractDiffiePublicP *pub_ckey,
-                     size_t econtract_size,
-                     const void *econtract,
-                     const struct TALER_PurseContractSignatureP *econtract_sig,
+                     const struct TALER_EncryptedContract *econtract,
                      bool *in_conflict);
 
 
@@ -4820,14 +4815,12 @@ struct TALER_EXCHANGEDB_Plugin
     size_t *econtract_size,
     void **econtract);
 
+
   /**
    * Function called to retrieve an encrypted contract.
    *
    * @param cls the @e cls of this struct with the plugin-specific state
    * @param purse_pub key to lookup the contract by
-   * @param[out] pub_ckey set to the ephemeral DH used to encrypt the contract
-   * @param[out] econtract_sig set to the signature over the encrypted contract
-   * @param[out] econtract_size set to the number of bytes in @a econtract
    * @param[out] econtract set to the encrypted contract on success, to be 
freed by the caller
    * @return transaction status code
    */
@@ -4835,10 +4828,7 @@ struct TALER_EXCHANGEDB_Plugin
   (*select_contract_by_purse)(
     void *cls,
     const struct TALER_PurseContractPublicKeyP *purse_pub,
-    struct TALER_ContractDiffiePublicP *pub_ckey,
-    struct TALER_PurseContractSignatureP *econtract_sig,
-    size_t *econtract_size,
-    void **econtract);
+    struct TALER_EncryptedContract *econtract);
 
 
   /**
diff --git a/src/lib/exchange_api_purse_create_with_deposit.c 
b/src/lib/exchange_api_purse_create_with_deposit.c
index e77bbf2d..cace7324 100644
--- a/src/lib/exchange_api_purse_create_with_deposit.c
+++ b/src/lib/exchange_api_purse_create_with_deposit.c
@@ -254,7 +254,6 @@ TALER_EXCHANGE_purse_create_with_deposit (
   CURL *eh;
   struct TALER_PurseContractSignatureP purse_sig;
   struct TALER_EncryptedContract econtract;
-  struct TALER_ContractDiffiePublicP contract_pub;
   char arg_str[sizeof (pch->purse_pub) * 2 + 32];
   char *url;
   uint32_t min_age = 0;
@@ -402,10 +401,10 @@ TALER_EXCHANGE_purse_create_with_deposit (
                                              &econtract.econtract,
                                              &econtract.econtract_size);
     GNUNET_CRYPTO_ecdhe_key_get_public (&contract_priv->ecdhe_priv,
-                                        &contract_pub.ecdhe_pub);
+                                        &econtract.contract_pub.ecdhe_pub);
     TALER_wallet_econtract_upload_sign (econtract.econtract,
                                         econtract.econtract_size,
-                                        &contract_pub,
+                                        &econtract.contract_pub,
                                         purse_priv,
                                         &econtract.econtract_sig);
   }

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