[taler-exchange] branch master updated: -refactor TALER_AgeMask.mask -> TALER_AgeMask.bits

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oec pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 7624db4e -refactor TALER_AgeMask.mask -> TALER_AgeMask.bits
7624db4e is described below

commit 7624db4efd91aee964b54ad67be38dd901a66040
Author: Özgür Kesim <oec-taler@kesim.org>
AuthorDate: Wed Mar 2 10:59:42 2022 +0100

    -refactor TALER_AgeMask.mask -> TALER_AgeMask.bits
    
    also: fix off-by-one in TALER_age_restriction_commit
---
 src/benchmark/taler-aggregator-benchmark.c     |  2 +-
 src/exchange-tools/taler-exchange-offline.c    |  2 +-
 src/exchange/taler-exchange-httpd_extensions.c |  2 +-
 src/exchange/taler-exchange-httpd_keys.c       |  4 +--
 src/exchangedb/plugin_exchangedb_postgres.c    | 16 +++++------
 src/extensions/extension_age_restriction.c     | 40 +++++++++++++-------------
 src/include/taler_crypto_lib.h                 |  2 +-
 src/json/json_helper.c                         |  2 +-
 src/json/json_pack.c                           |  4 +--
 src/pq/pq_query_helper.c                       |  2 +-
 src/pq/pq_result_helper.c                      |  2 +-
 src/testing/testing_api_cmd_refresh.c          |  2 +-
 src/testing/testing_api_helpers_exchange.c     |  4 +--
 src/util/age_restriction.c                     | 34 ++++++++++++----------
 src/util/denom.c                               |  6 ++--
 15 files changed, 64 insertions(+), 60 deletions(-)

diff --git a/src/benchmark/taler-aggregator-benchmark.c 
b/src/benchmark/taler-aggregator-benchmark.c
index 6db08342..1437dafa 100644
--- a/src/benchmark/taler-aggregator-benchmark.c
+++ b/src/benchmark/taler-aggregator-benchmark.c
@@ -530,7 +530,7 @@ run (void *cls,
     {
       uint64_t seed;
       struct TALER_AgeMask mask = {
-        .mask = 1 || 1 << 8 || 1 << 12 || 1 << 16 || 1 << 18
+        .bits = 1 || 1 << 8 || 1 << 12 || 1 << 16 || 1 << 18
       };
       struct TALER_AgeCommitmentProof acp = {0};
 
diff --git a/src/exchange-tools/taler-exchange-offline.c 
b/src/exchange-tools/taler-exchange-offline.c
index 8e1fdd51..0c1e84dd 100644
--- a/src/exchange-tools/taler-exchange-offline.c
+++ b/src/exchange-tools/taler-exchange-offline.c
@@ -3260,7 +3260,7 @@ load_age_mask (const char*section_name)
   static const struct TALER_AgeMask null_mask = {0};
   enum GNUNET_GenericReturnValue ret;
 
-  if (age_mask.mask == 0)
+  if (age_mask.bits == 0)
     return null_mask;
 
   if (GNUNET_OK != (GNUNET_CONFIGURATION_have_value (
diff --git a/src/exchange/taler-exchange-httpd_extensions.c 
b/src/exchange/taler-exchange-httpd_extensions.c
index 6894a076..0a7707e7 100644
--- a/src/exchange/taler-exchange-httpd_extensions.c
+++ b/src/exchange/taler-exchange-httpd_extensions.c
@@ -131,7 +131,7 @@ extension_update_event_cb (void *cls,
   /* Special case age restriction: Update global flag and mask  */
   if (TALER_Extension_AgeRestriction == type)
   {
-    TEH_age_mask.mask = 0;
+    TEH_age_mask.bits = 0;
     TEH_age_restriction_enabled =
       TALER_extensions_age_restriction_is_enabled ();
     if (TEH_age_restriction_enabled)
diff --git a/src/exchange/taler-exchange-httpd_keys.c 
b/src/exchange/taler-exchange-httpd_keys.c
index 8d90afae..33f9170d 100644
--- a/src/exchange/taler-exchange-httpd_keys.c
+++ b/src/exchange/taler-exchange-httpd_keys.c
@@ -797,7 +797,7 @@ load_age_mask (const char*section_name)
   static const struct TALER_AgeMask null_mask = {0};
   struct TALER_AgeMask age_mask = TALER_extensions_age_restriction_ageMask ();
 
-  if (age_mask.mask == 0)
+  if (age_mask.bits == 0)
     return null_mask;
 
   if (GNUNET_OK != (GNUNET_CONFIGURATION_have_value (
@@ -2120,7 +2120,7 @@ finish_keys_response (struct TEH_KeyStateHandle *ksh)
          * the properties of the denomination.  Also, we build up the right
          * hash for the corresponding array. */
         if (TEH_age_restriction_enabled &&
-            (0 != dk->denom_pub.age_mask.mask))
+            (0 != dk->denom_pub.age_mask.bits))
         {
           have_age_restricted_denoms = true;
           array = age_restricted_denoms;
diff --git a/src/exchangedb/plugin_exchangedb_postgres.c 
b/src/exchangedb/plugin_exchangedb_postgres.c
index c8c0c296..bb1f0b6f 100644
--- a/src/exchangedb/plugin_exchangedb_postgres.c
+++ b/src/exchangedb/plugin_exchangedb_postgres.c
@@ -3146,13 +3146,13 @@ postgres_insert_denomination_info (
     TALER_PQ_query_param_amount_nbo (&issue->properties.fees.deposit),
     TALER_PQ_query_param_amount_nbo (&issue->properties.fees.refresh),
     TALER_PQ_query_param_amount_nbo (&issue->properties.fees.refund),
-    GNUNET_PQ_query_param_uint32 (&denom_pub->age_mask.mask),
+    GNUNET_PQ_query_param_uint32 (&denom_pub->age_mask.bits),
     GNUNET_PQ_query_param_end
   };
   struct TALER_DenomFeeSet fees;
 
-  GNUNET_assert (denom_pub->age_mask.mask ==
-                 issue->age_mask.mask);
+  GNUNET_assert (denom_pub->age_mask.bits ==
+                 issue->age_mask.bits);
   TALER_denom_pub_hash (denom_pub,
                         &denom_hash);
   GNUNET_assert (0 ==
@@ -3225,7 +3225,7 @@ postgres_get_denomination_info (
     TALER_PQ_RESULT_SPEC_AMOUNT_NBO ("fee_refund",
                                      &issue->properties.fees.refund),
     GNUNET_PQ_result_spec_uint32 ("age_mask",
-                                  &issue->age_mask.mask),
+                                  &issue->age_mask.bits),
     GNUNET_PQ_result_spec_end
   };
 
@@ -3316,7 +3316,7 @@ domination_cb_helper (void *cls,
       TALER_PQ_result_spec_denom_pub ("denom_pub",
                                       &denom_pub),
       GNUNET_PQ_result_spec_uint32 ("age_mask",
-                                    &issue.age_mask.mask),
+                                    &issue.age_mask.bits),
       GNUNET_PQ_result_spec_end
     };
 
@@ -3464,7 +3464,7 @@ dominations_cb_helper (void *cls,
       TALER_PQ_result_spec_denom_pub ("denom_pub",
                                       &denom_pub),
       GNUNET_PQ_result_spec_uint32 ("age_mask",
-                                    &meta.age_mask.mask),
+                                    &meta.age_mask.bits),
       GNUNET_PQ_result_spec_end
     };
 
@@ -10329,7 +10329,7 @@ postgres_lookup_denomination_key (
     TALER_PQ_RESULT_SPEC_AMOUNT ("fee_refund",
                                  &meta->fees.refund),
     GNUNET_PQ_result_spec_uint32 ("age_mask",
-                                  &meta->age_mask.mask),
+                                  &meta->age_mask.bits),
     GNUNET_PQ_result_spec_end
   };
 
@@ -10373,7 +10373,7 @@ postgres_add_denomination_key (
     TALER_PQ_query_param_amount (&meta->fees.deposit),
     TALER_PQ_query_param_amount (&meta->fees.refresh),
     TALER_PQ_query_param_amount (&meta->fees.refund),
-    GNUNET_PQ_query_param_uint32 (&meta->age_mask.mask),
+    GNUNET_PQ_query_param_uint32 (&meta->age_mask.bits),
     GNUNET_PQ_query_param_end
   };
 
diff --git a/src/extensions/extension_age_restriction.c 
b/src/extensions/extension_age_restriction.c
index 28b2dbb1..fd883ae4 100644
--- a/src/extensions/extension_age_restriction.c
+++ b/src/extensions/extension_age_restriction.c
@@ -64,7 +64,7 @@ TALER_parse_age_group_string (
       if (prev >= val)
         return GNUNET_SYSERR;
 
-      mask->mask |= 1 << val;
+      mask->bits |= 1 << val;
       prev = val;
       val = 0;
       continue;
@@ -82,8 +82,8 @@ TALER_parse_age_group_string (
   if (0>val || 32<=val || prev>=val)
     return GNUNET_SYSERR;
 
-  mask->mask |= (1 << val);
-  mask->mask |= 1; // mark zeroth group, too
+  mask->bits |= (1 << val);
+  mask->bits |= 1; // mark zeroth group, too
 
   return GNUNET_OK;
 }
@@ -100,7 +100,7 @@ char *
 TALER_age_mask_to_string (
   const struct TALER_AgeMask *m)
 {
-  uint32_t mask = m->mask;
+  uint32_t bits = m->bits;
   unsigned int n = 0;
   char *buf = GNUNET_malloc (32 * 3); // max characters possible
   char *pos = buf;
@@ -110,11 +110,11 @@ TALER_age_mask_to_string (
     return buf;
   }
 
-  while (mask != 0)
+  while (bits != 0)
   {
-    mask >>= 1;
+    bits >>= 1;
     n++;
-    if (0 == (mask & 1))
+    if (0 == (bits & 1))
     {
       continue;
     }
@@ -125,7 +125,7 @@ TALER_age_mask_to_string (
     }
     *(pos++) = '0' + n % 10;
 
-    if (0 != (mask >> 1))
+    if (0 != (bits >> 1))
     {
       *(pos++) = ':';
     }
@@ -160,7 +160,7 @@ age_restriction_disable (
     this->config_json = NULL;
   }
 
-  _config.mask.mask = 0;
+  _config.mask.bits = 0;
   _config.num_groups = 0;
 }
 
@@ -212,23 +212,23 @@ age_restriction_load_taler_config (
     return GNUNET_SYSERR;
 
 
-  mask.mask = TALER_EXTENSION_AGE_RESTRICTION_DEFAULT_AGE_MASK;
+  mask.bits = TALER_EXTENSION_AGE_RESTRICTION_DEFAULT_AGE_MASK;
   ret = GNUNET_OK;
 
   if (groups != NULL)
   {
     ret = TALER_parse_age_group_string (groups, &mask);
     if (GNUNET_OK != ret)
-      mask.mask = TALER_EXTENSION_AGE_RESTRICTION_DEFAULT_AGE_MASK;
+      mask.bits = TALER_EXTENSION_AGE_RESTRICTION_DEFAULT_AGE_MASK;
   }
 
   if (GNUNET_OK == ret)
   {
     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                "setting age mask to %x with #groups: %d\n", mask.mask,
-                __builtin_popcount (mask.mask) - 1);
-    _config.mask.mask = mask.mask;
-    _config.num_groups = __builtin_popcount (mask.mask) - 1; /* no underflow, 
first bit always set */
+                "setting age mask to %x with #groups: %d\n", mask.bits,
+                __builtin_popcount (mask.bits) - 1);
+    _config.mask.bits = mask.bits;
+    _config.num_groups = __builtin_popcount (mask.bits) - 1; /* no underflow, 
first bit always set */
     this->config = &_config;
 
     /* Note: we do now have _config set, however this->config_json is NOT set,
@@ -266,16 +266,16 @@ age_restriction_load_json_config (
   if (TALER_Extension_AgeRestriction != this->type)
     return GNUNET_SYSERR;
 
-  _config.mask.mask = mask.mask;
+  _config.mask.bits = mask.bits;
   _config.num_groups = 0;
 
-  if (mask.mask > 0)
+  if (mask.bits > 0)
   {
     /* if the mask is not zero, the first bit MUST be set */
-    if (0 == (mask.mask & 1))
+    if (0 == (mask.bits & 1))
       return GNUNET_SYSERR;
 
-    _config.num_groups = __builtin_popcount (mask.mask) - 1;
+    _config.num_groups = __builtin_popcount (mask.bits) - 1;
   }
 
   this->config = &_config;
@@ -358,7 +358,7 @@ struct TALER_Extension _extension_age_restriction = {
 bool
 TALER_extensions_age_restriction_is_configured ()
 {
-  return (0 != _config.mask.mask);
+  return (0 != _config.mask.bits);
 }
 
 
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index a8dc4b0d..ea1a73af 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -850,7 +850,7 @@ struct TALER_BlindedDenominationSignature
  */
 struct TALER_AgeMask
 {
-  uint32_t mask;
+  uint32_t bits;
 };
 
 /**
diff --git a/src/json/json_helper.c b/src/json/json_helper.c
index 4ec9a698..4896fb59 100644
--- a/src/json/json_helper.c
+++ b/src/json/json_helper.c
@@ -253,7 +253,7 @@ parse_denom_pub (void *cls,
     GNUNET_JSON_spec_string ("cipher",
                              &cipher),
     GNUNET_JSON_spec_uint32 ("age_mask",
-                             &denom_pub->age_mask.mask),
+                             &denom_pub->age_mask.bits),
     GNUNET_JSON_spec_end ()
   };
   const char *emsg;
diff --git a/src/json/json_pack.c b/src/json/json_pack.c
index 8f888eaf..ad41eb95 100644
--- a/src/json/json_pack.c
+++ b/src/json/json_pack.c
@@ -64,7 +64,7 @@ TALER_JSON_pack_denom_pub (
           GNUNET_JSON_pack_string ("cipher",
                                    "RSA"),
           GNUNET_JSON_pack_uint64 ("age_mask",
-                                   pk->age_mask.mask),
+                                   pk->age_mask.bits),
           GNUNET_JSON_pack_rsa_public_key ("rsa_public_key",
                                            pk->details.rsa_public_key));
     break;
@@ -74,7 +74,7 @@ TALER_JSON_pack_denom_pub (
           GNUNET_JSON_pack_string ("cipher",
                                    "CS"),
           GNUNET_JSON_pack_uint64 ("age_mask",
-                                   pk->age_mask.mask),
+                                   pk->age_mask.bits),
           GNUNET_JSON_pack_data_varsize ("cs_public_key",
                                          &pk->details.cs_public_key,
                                          sizeof (pk->details.cs_public_key)));
diff --git a/src/pq/pq_query_helper.c b/src/pq/pq_query_helper.c
index efa25012..1db608ed 100644
--- a/src/pq/pq_query_helper.c
+++ b/src/pq/pq_query_helper.c
@@ -186,7 +186,7 @@ qconv_denom_pub (void *cls,
   GNUNET_assert (scratch_length > 0);
   GNUNET_break (NULL == cls);
   be[0] = htonl ((uint32_t) denom_pub->cipher);
-  be[1] = htonl (denom_pub->age_mask.mask);
+  be[1] = htonl (denom_pub->age_mask.bits);
   switch (denom_pub->cipher)
   {
   case TALER_DENOMINATION_RSA:
diff --git a/src/pq/pq_result_helper.c b/src/pq/pq_result_helper.c
index 68cbbcd4..139cf1cb 100644
--- a/src/pq/pq_result_helper.c
+++ b/src/pq/pq_result_helper.c
@@ -426,7 +426,7 @@ extract_denom_pub (void *cls,
   res += sizeof (be);
   len -= sizeof (be);
   pk->cipher = ntohl (be[0]);
-  pk->age_mask.mask = ntohl (be[1]);
+  pk->age_mask.bits = ntohl (be[1]);
   switch (pk->cipher)
   {
   case TALER_DENOMINATION_RSA:
diff --git a/src/testing/testing_api_cmd_refresh.c 
b/src/testing/testing_api_cmd_refresh.c
index e2ed8b21..2b04156c 100644
--- a/src/testing/testing_api_cmd_refresh.c
+++ b/src/testing/testing_api_cmd_refresh.c
@@ -1115,7 +1115,7 @@ melt_run (void *cls,
     /* Melt amount starts with the melt fee of the old coin; we'll add the
        values and withdraw fees of the fresh coins next */
     melt_amount = melt_denom_pub->fees.refresh;
-    age_restricted = melt_denom_pub->key.age_mask.mask != 0;
+    age_restricted = melt_denom_pub->key.age_mask.bits != 0;
     for (unsigned int i = 0; i<num_fresh_coins; i++)
     {
       const struct TALER_EXCHANGE_DenomPublicKey *fresh_pk;
diff --git a/src/testing/testing_api_helpers_exchange.c 
b/src/testing/testing_api_helpers_exchange.c
index 1eecbfeb..c2c5136e 100644
--- a/src/testing/testing_api_helpers_exchange.c
+++ b/src/testing/testing_api_helpers_exchange.c
@@ -425,7 +425,7 @@ TALER_TESTING_find_pk (const struct TALER_EXCHANGE_Keys 
*keys,
          (GNUNET_TIME_timestamp_cmp (now,
                                      <,
                                      pk->withdraw_valid_until)) &&
-         (age_restricted == (0 != pk->key.age_mask.mask)) )
+         (age_restricted == (0 != pk->key.age_mask.bits)) )
       return pk;
   }
   /* do 2nd pass to check if expiration times are to blame for
@@ -442,7 +442,7 @@ TALER_TESTING_find_pk (const struct TALER_EXCHANGE_Keys 
*keys,
           GNUNET_TIME_timestamp_cmp (now,
                                      >,
                                      pk->withdraw_valid_until) ) &&
-         (age_restricted == (0 != pk->key.age_mask.mask)) )
+         (age_restricted == (0 != pk->key.age_mask.bits)) )
     {
       GNUNET_log
         (GNUNET_ERROR_TYPE_WARNING,
diff --git a/src/util/age_restriction.c b/src/util/age_restriction.c
index 2cb5cb20..8e088a40 100644
--- a/src/util/age_restriction.c
+++ b/src/util/age_restriction.c
@@ -38,7 +38,7 @@ TALER_age_commitment_hash (
     return;
   }
 
-  GNUNET_assert (__builtin_popcount (commitment->mask.mask) - 1 ==
+  GNUNET_assert (__builtin_popcount (commitment->mask.bits) - 1 ==
                  commitment->num);
 
   hash_context = GNUNET_CRYPTO_hash_context_start ();
@@ -67,7 +67,7 @@ get_age_group (
   const struct TALER_AgeMask *mask,
   uint8_t age)
 {
-  uint32_t m = mask->mask;
+  uint32_t m = mask->bits;
   uint8_t i = 0;
 
   while (m > 0)
@@ -89,26 +89,29 @@ TALER_age_restriction_commit (
   const uint64_t salt,
   struct TALER_AgeCommitmentProof *new)
 {
-  uint8_t num_pub = __builtin_popcount (mask->mask) - 1;
-  uint8_t num_priv = get_age_group (mask, age) - 1;
+  uint8_t num_pub = __builtin_popcount (mask->bits) - 1;
+  uint8_t num_priv = get_age_group (mask, age);
   size_t i;
 
   GNUNET_assert (NULL != new);
-  GNUNET_assert (mask->mask & 1); /* fist bit must have been set */
+  GNUNET_assert (mask->bits & 1); /* fist bit must have been set */
   GNUNET_assert (0 <= num_priv);
   GNUNET_assert (31 > num_priv);
   GNUNET_assert (num_priv <= num_pub);
 
-  new->commitment.mask.mask = mask->mask;
+  new->commitment.mask.bits = mask->bits;
   new->commitment.num = num_pub;
   new->proof.num = num_priv;
+  new->proof.priv = NULL;
 
   new->commitment.pub = GNUNET_new_array (
     num_pub,
     struct TALER_AgeCommitmentPublicKeyP);
-  new->proof.priv = GNUNET_new_array (
-    num_priv,
-    struct TALER_AgeCommitmentPrivateKeyP);
+
+  if (0 < num_priv)
+    new->proof.priv = GNUNET_new_array (
+      num_priv,
+      struct TALER_AgeCommitmentPrivateKeyP);
 
   /* Create as many private keys as we need and fill the rest of the
    * public keys with valid curve points.
@@ -143,7 +146,8 @@ TALER_age_restriction_commit (
 
 FAIL:
   GNUNET_free (new->commitment.pub);
-  GNUNET_free (new->proof.priv);
+  if (NULL != new->proof.priv)
+    GNUNET_free (new->proof.priv);
   return GNUNET_SYSERR;
 }
 
@@ -199,7 +203,7 @@ TALER_age_commitment_derive (
 
   GNUNET_assert (NULL != new);
   GNUNET_assert (orig->commitment.num== __builtin_popcount (
-                   orig->commitment.mask.mask) - 1);
+                   orig->commitment.mask.bits) - 1);
   GNUNET_assert (orig->proof.num <= orig->commitment.num);
 
   new->commitment.mask = orig->commitment.mask;
@@ -305,7 +309,7 @@ TALER_age_commitment_attest (
     return GNUNET_OK;
   }
 
-  if (group > cp->proof.num)
+  if (group >= cp->proof.num)
     return GNUNET_NO;
 
   {
@@ -316,7 +320,7 @@ TALER_age_commitment_attest (
       .age = age
     };
 
-    GNUNET_CRYPTO_eddsa_sign (&cp->proof.priv[group].eddsa_priv,
+    GNUNET_CRYPTO_eddsa_sign (&cp->proof.priv[group - 1].eddsa_priv,
                               &at,
                               &attest->eddsa_signature);
   }
@@ -345,7 +349,7 @@ TALER_age_commitment_verify (
   if (0 == group)
     return GNUNET_OK;
 
-  if (group > comm->num)
+  if (group >= comm->num)
     return GNUNET_NO;
 
   {
@@ -360,7 +364,7 @@ TALER_age_commitment_verify (
       GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_AGE_ATTESTATION,
                                   &at,
                                   &attest->eddsa_signature,
-                                  &comm->pub[group].eddsa_pub);
+                                  &comm->pub[group - 1].eddsa_pub);
   }
 }
 
diff --git a/src/util/denom.c b/src/util/denom.c
index d4cdb8fe..c1c3cdf5 100644
--- a/src/util/denom.c
+++ b/src/util/denom.c
@@ -230,7 +230,7 @@ TALER_denom_pub_hash (const struct 
TALER_DenominationPublicKey *denom_pub,
                       struct TALER_DenominationHashP *denom_hash)
 {
   uint32_t opt[2] = {
-    htonl (denom_pub->age_mask.mask),
+    htonl (denom_pub->age_mask.bits),
     htonl ((uint32_t) denom_pub->cipher)
   };
   struct GNUNET_HashContext *hc;
@@ -558,8 +558,8 @@ TALER_denom_pub_cmp (const struct 
TALER_DenominationPublicKey *denom1,
 {
   if (denom1->cipher != denom2->cipher)
     return (denom1->cipher > denom2->cipher) ? 1 : -1;
-  if (denom1->age_mask.mask != denom2->age_mask.mask)
-    return (denom1->age_mask.mask > denom2->age_mask.mask) ? 1 : -1;
+  if (denom1->age_mask.bits != denom2->age_mask.bits)
+    return (denom1->age_mask.bits > denom2->age_mask.bits) ? 1 : -1;
   switch (denom1->cipher)
   {
   case TALER_DENOMINATION_INVALID:

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