refactor h_extensions -> h_policy, and structs accordingly

25 files changed, 247 insertions, 110 deletions

diff --git a/contrib/gana b/contrib/gana
-Subproject 57d96e8e123df90c804a821874fc6cb88671ab7
+Subproject 36f9c499683d33cf3d1a267c6f4ca9e48301b53
diff --git a/src/auditor/taler-auditor-httpd_deposit-confirmation.c b/src/auditor/taler-auditor-httpd_deposit-confirmation.c
index f4d89b7c..c7bb4f50 100644
--- a/src/auditor/taler-auditor-httpd_deposit-confirmation.c
+++ b/src/auditor/taler-auditor-httpd_deposit-confirmation.c
@@ -227,7 +227,7 @@ verify_and_execute_deposit_confirmation (
       TALER_exchange_online_deposit_confirmation_verify (
         &dc->h_contract_terms,
         &dc->h_wire,
-        NULL /* h_extensions! */,
+        &dc->h_policy,
         dc->exchange_timestamp,
         dc->wire_deadline,
         dc->refund_deadline,
@@ -276,8 +276,8 @@ TAH_DEPOSIT_CONFIRMATION_handler (struct TAH_RequestHandler *rh,
   struct GNUNET_JSON_Specification spec[] = {
     GNUNET_JSON_spec_fixed_auto ("h_contract_terms",
                                  &dc.h_contract_terms),
-    GNUNET_JSON_spec_fixed_auto ("h_extensions",
-                                 &dc.h_extensions),
+    GNUNET_JSON_spec_fixed_auto ("h_policy",
+                                 &dc.h_policy),
     GNUNET_JSON_spec_fixed_auto ("h_wire",
                                  &dc.h_wire),
     GNUNET_JSON_spec_timestamp ("exchange_timestamp",
diff --git a/src/auditor/taler-helper-auditor-coins.c b/src/auditor/taler-helper-auditor-coins.c
index aa3e34b7..6a9ed09d 100644
--- a/src/auditor/taler-helper-auditor-coins.c
+++ b/src/auditor/taler-helper-auditor-coins.c
@@ -1625,7 +1625,8 @@ deposit_cb (void *cls,
                                      &h_wire,
                                      &deposit->h_contract_terms,
                                      &deposit->coin.h_age_commitment,
-                                     NULL /* FIXME-Oec: #7270: h_extensions! */,
+                                     deposit->no_policy_details ? NULL :
+                                     &deposit->h_policy,
                                      &h_denom_pub,
                                      deposit->timestamp,
                                      &deposit->merchant_pub,
diff --git a/src/auditordb/auditor-0001.sql b/src/auditordb/auditor-0001.sql
index 483f4f1e..1e96318a 100644
--- a/src/auditordb/auditor-0001.sql
+++ b/src/auditordb/auditor-0001.sql
@@ -245,7 +245,7 @@ CREATE TABLE IF NOT EXISTS deposit_confirmations
   (master_pub BYTEA NOT NULL CONSTRAINT master_pub_ref REFERENCES auditor_exchanges(master_pub) ON DELETE CASCADE
   ,serial_id BIGSERIAL NOT NULL UNIQUE
   ,h_contract_terms BYTEA NOT NULL CHECK (LENGTH(h_contract_terms)=64)
-  ,h_extensions BYTEA NOT NULL CHECK (LENGTH(h_contract_terms)=64)
+  ,h_policy BYTEA NOT NULL CHECK (LENGTH(h_policy)=64)
   ,h_wire BYTEA NOT NULL CHECK (LENGTH(h_wire)=64)
   ,exchange_timestamp INT8 NOT NULL
   ,refund_deadline INT8 NOT NULL
diff --git a/src/auditordb/plugin_auditordb_postgres.c b/src/auditordb/plugin_auditordb_postgres.c
index 46c2eb1e..400a988e 100644
--- a/src/auditordb/plugin_auditordb_postgres.c
+++ b/src/auditordb/plugin_auditordb_postgres.c
@@ -195,7 +195,7 @@ setup_connection (struct PostgresClosure *pg)
                             "INSERT INTO deposit_confirmations "
                             "(master_pub"
                             ",h_contract_terms"
-                            ",h_extensions"
+                            ",h_policy"
                             ",h_wire"
                             ",exchange_timestamp"
                             ",wire_deadline"
@@ -214,7 +214,7 @@ setup_connection (struct PostgresClosure *pg)
                             "SELECT"
                             " serial_id"
                             ",h_contract_terms"
-                            ",h_extensions"
+                            ",h_policy"
                             ",h_wire"
                             ",exchange_timestamp"
                             ",wire_deadline"
@@ -1087,7 +1087,7 @@ postgres_insert_deposit_confirmation (
   struct GNUNET_PQ_QueryParam params[] = {
     GNUNET_PQ_query_param_auto_from_type (&dc->master_public_key),
     GNUNET_PQ_query_param_auto_from_type (&dc->h_contract_terms),
-    GNUNET_PQ_query_param_auto_from_type (&dc->h_extensions),
+    GNUNET_PQ_query_param_auto_from_type (&dc->h_policy),
     GNUNET_PQ_query_param_auto_from_type (&dc->h_wire),
     GNUNET_PQ_query_param_timestamp (&dc->exchange_timestamp),
     GNUNET_PQ_query_param_timestamp (&dc->wire_deadline),
@@ -1168,8 +1168,8 @@ deposit_confirmation_cb (void *cls,
                                     &serial_id),
       GNUNET_PQ_result_spec_auto_from_type ("h_contract_terms",
                                             &dc.h_contract_terms),
-      GNUNET_PQ_result_spec_auto_from_type ("h_extensions",
-                                            &dc.h_extensions),
+      GNUNET_PQ_result_spec_auto_from_type ("h_policy",
+                                            &dc.h_policy),
       GNUNET_PQ_result_spec_auto_from_type ("h_wire",
                                             &dc.h_wire),
       GNUNET_PQ_result_spec_timestamp ("exchange_timestamp",
diff --git a/src/exchange/taler-exchange-httpd_batch-deposit.c b/src/exchange/taler-exchange-httpd_batch-deposit.c
index c9478014..637c8a45 100644
--- a/src/exchange/taler-exchange-httpd_batch-deposit.c
+++ b/src/exchange/taler-exchange-httpd_batch-deposit.c
@@ -87,15 +87,16 @@ struct BatchDepositContext
   const char *payto_uri;
 
   /**
-   * Additional details for extensions relevant for this
+   * Additional details for policy relevant for this
    * deposit operation, possibly NULL!
    */
-  json_t *extension_details;
+  json_t *policy_details;
+  bool no_policy_details;
 
   /**
-   * Hash over @e extension_details.
+   * Hash over @e policy_details, might be all zero;
    */
-  struct TALER_ExtensionContractHashP h_extensions;
+  struct TALER_ExtensionPolicyHashP h_policy;
 
   /**
    * Time when this request was generated.  Used, for example, to
@@ -173,7 +174,7 @@ again:
            &TEH_keys_exchange_sign_,
            &bdc->h_contract_terms,
            &bdc->h_wire,
-           &bdc->h_extensions,
+           bdc->no_policy_details ? NULL : &bdc->h_policy,
            bdc->exchange_timestamp,
            bdc->wire_deadline,
            bdc->refund_deadline,
@@ -474,7 +475,7 @@ parse_coin (struct MHD_Connection *connection,
                                    &dc->h_wire,
                                    &dc->h_contract_terms,
                                    &deposit->coin.h_age_commitment,
-                                   &dc->h_extensions,
+                                   dc->no_policy_details ? NULL : &dc->h_policy,
                                    &deposit->coin.denom_pub_hash,
                                    dc->timestamp,
                                    &dc->merchant_pub,
@@ -500,7 +501,7 @@ parse_coin (struct MHD_Connection *connection,
      but rather insert them ONCE and then per-coin only use
      the resulting extension UUID/serial; so the data structure
      here should be changed once we look at extensions in earnest.  */
-  deposit->extension_details = dc->extension_details;
+  deposit->policy_details = dc->policy_details;
   deposit->timestamp = dc->timestamp;
   deposit->refund_deadline = dc->refund_deadline;
   deposit->wire_deadline = dc->wire_deadline;
@@ -517,7 +518,6 @@ TEH_handler_batch_deposit (struct TEH_RequestContext *rc,
   struct BatchDepositContext dc;
   json_t *coins;
   bool no_refund_deadline = true;
-  bool no_extensions = true;
   struct GNUNET_JSON_Specification spec[] = {
     GNUNET_JSON_spec_string ("merchant_payto_uri",
                              &dc.payto_uri),
@@ -530,9 +530,9 @@ TEH_handler_batch_deposit (struct TEH_RequestContext *rc,
     GNUNET_JSON_spec_json ("coins",
                            &coins),
     GNUNET_JSON_spec_mark_optional (
-      GNUNET_JSON_spec_json ("extension_details",
-                             &dc.extension_details),
-      &no_extensions),
+      GNUNET_JSON_spec_json ("policy",
+                             &dc.policy_details),
+      &dc.no_policy_details),
     GNUNET_JSON_spec_timestamp ("timestamp",
                                 &dc.timestamp),
     GNUNET_JSON_spec_mark_optional (
@@ -607,11 +607,11 @@ TEH_handler_batch_deposit (struct TEH_RequestContext *rc,
   TALER_merchant_wire_signature_hash (dc.payto_uri,
                                       &dc.wire_salt,
                                       &dc.h_wire);
-  /* FIXME-OEC: #7270 hash actual extension JSON object here */
-  // if (! no_extensions)
-  memset (&dc.h_extensions,
-          0,
-          sizeof (dc.h_extensions));
+  if (! dc.no_policy_details)
+  {
+    TALER_deposit_policy_hash (dc.policy_details,
+                               &dc.h_policy);
+  }
   dc.num_coins = json_array_size (coins);
   if (0 == dc.num_coins)
   {
diff --git a/src/exchange/taler-exchange-httpd_deposit.c b/src/exchange/taler-exchange-httpd_deposit.c
index 0484ab07..0199802c 100644
--- a/src/exchange/taler-exchange-httpd_deposit.c
+++ b/src/exchange/taler-exchange-httpd_deposit.c
@@ -47,7 +47,7 @@
  * @param connection connection to the client
  * @param coin_pub public key of the coin
  * @param h_wire hash of wire details
- * @param h_extensions hash of applicable extensions
+ * @param h_policy hash of applicable extensions
  * @param h_contract_terms hash of contract details
  * @param exchange_timestamp exchange's timestamp
  * @param refund_deadline until when this deposit be refunded
@@ -61,7 +61,7 @@ reply_deposit_success (
   struct MHD_Connection *connection,
   const struct TALER_CoinSpendPublicKeyP *coin_pub,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp refund_deadline,
@@ -78,7 +78,7 @@ reply_deposit_success (
          &TEH_keys_exchange_sign_,
          h_contract_terms,
          h_wire,
-         h_extensions,
+         h_policy,
          exchange_timestamp,
          wire_deadline,
          refund_deadline,
@@ -208,6 +208,86 @@ deposit_transaction (void *cls,
 }
 
 
+/**
+ * @brief check the provided policy
+ *
+ * @param[in] policy_details JSON object provided by the client with prolicy
+ * @param[out] hc On success, will contain the hash of the normalized policy_details object
+ * @param[out] handler_out On success, the handler might provide an output
+ * @param[out] error_hint On failure, might contain a hint of the error from the extension
+ * @return GNUNET_OK on success.
+ */
+enum GNUNET_GenericReturnValue
+check_policy_details (
+  json_t *policy_details,
+  struct TALER_ExtensionPolicyHashP *hc,
+  json_t **handler_out,
+  char **error_hint)
+{
+  const char *type = NULL;
+  const struct TALER_Extension *extension;
+  enum GNUNET_GenericReturnValue ret;
+
+  *error_hint  = NULL;
+
+  if ((NULL == policy_details) ||
+      (! json_is_object (policy_details)))
+  {
+    *error_hint = "invalid policy object";
+    return GNUNET_SYSERR;
+  }
+
+  // parse and evaluate the object
+  {
+    json_t *jtype = json_object_get (
+      policy_details,
+      "type");
+    if (NULL == jtype)
+    {
+      *error_hint = "no type in policy object";
+      return GNUNET_SYSERR;
+    }
+
+    type = json_string_value (jtype);
+    if (NULL == type)
+    {
+      *error_hint = "invalid type in policy object";
+      return GNUNET_SYSERR;
+    }
+
+    extension = TALER_extensions_get_by_name (type);
+    if ((NULL == extension) ||
+        (NULL == extension->deposit_handler))
+    {
+      GNUNET_break (0);
+      *error_hint = "no such policy";
+      return GNUNET_SYSERR;
+    }
+
+    ret = extension->deposit_handler (policy_details,
+                                      handler_out);
+    if (GNUNET_OK != ret)
+    {
+      GNUNET_break (0);
+      if (NULL != *handler_out)
+      {
+        *error_hint = json_dumps (*handler_out, JSON_INDENT (2));
+      }
+      else
+      {
+        GNUNET_break (1);
+        *error_hint = "unknown error with the policy";
+      }
+      return ret;
+    }
+  }
+
+  TALER_deposit_policy_hash (policy_details,
+                             hc);
+  return GNUNET_OK;
+}
+
+
 MHD_RESULT
 TEH_handler_deposit (struct MHD_Connection *connection,
                      const struct TALER_CoinSpendPublicKeyP *coin_pub,
@@ -216,6 +296,9 @@ TEH_handler_deposit (struct MHD_Connection *connection,
   struct DepositContext dc;
   struct TALER_EXCHANGEDB_Deposit deposit;
   const char *payto_uri;
+  struct TALER_ExtensionPolicyHashP h_policy;
+  struct TALER_ExtensionPolicyHashP *ph_policy = NULL;
+  bool no_policy;
   struct GNUNET_JSON_Specification spec[] = {
     GNUNET_JSON_spec_string ("merchant_payto_uri",
                              &payto_uri),
@@ -240,10 +323,16 @@ TEH_handler_deposit (struct MHD_Connection *connection,
                                  &deposit.csig),
     GNUNET_JSON_spec_timestamp ("timestamp",
                                 &deposit.timestamp),
+
+    /* TODO: this will move to an extension for refunds */
     GNUNET_JSON_spec_mark_optional (
       GNUNET_JSON_spec_timestamp ("refund_deadline",
                                   &deposit.refund_deadline),
       NULL),
+    GNUNET_JSON_spec_mark_optional (
+      GNUNET_JSON_spec_json ("policy",
+                             &deposit.policy_details),
+      &no_policy),
     GNUNET_JSON_spec_timestamp ("wire_transfer_deadline",
                                 &deposit.wire_deadline),
     GNUNET_JSON_spec_end ()
@@ -383,6 +472,31 @@ TEH_handler_deposit (struct MHD_Connection *connection,
                                          NULL);
     }
 
+    /* TODO: check policy_details */
+    if (! no_policy)
+    {
+      char *hint;
+      json_t *out;
+      MHD_RESULT res;
+
+      if (GNUNET_OK !=
+          check_policy_details (dc.deposit->policy_details,
+                                &h_policy,
+                                &out,
+                                &hint))
+      {
+        res = TALER_MHD_reply_with_error (connection,
+                                          MHD_HTTP_BAD_REQUEST,
+                                          /* TODO: new error type needed */
+                                          TALER_EC_EXCHANGE_GENERIC_OPERATION_UNKNOWN,
+                                          hint);
+        GNUNET_free (hint);
+        return res;
+      }
+
+      ph_policy = &h_policy;
+    }
+
     deposit.deposit_fee = dk->meta.fees.deposit;
     /* check coin signature */
     switch (dk->denom_pub.cipher)
@@ -426,7 +540,7 @@ TEH_handler_deposit (struct MHD_Connection *connection,
                                    &h_wire,
                                    &deposit.h_contract_terms,
                                    &deposit.coin.h_age_commitment,
-                                   NULL /* FIXME: h_extensions! */,
+                                   ph_policy,
                                    &deposit.coin.denom_pub_hash,
                                    deposit.timestamp,
                                    &deposit.merchant_pub,
@@ -481,7 +595,7 @@ TEH_handler_deposit (struct MHD_Connection *connection,
     res = reply_deposit_success (connection,
                                  &deposit.coin.coin_pub,
                                  &h_wire,
-                                 NULL /* FIXME: h_extensions! */,
+                                 ph_policy,
                                  &deposit.h_contract_terms,
                                  dc.exchange_timestamp,
                                  deposit.refund_deadline,
diff --git a/src/exchange/taler-exchange-httpd_responses.c b/src/exchange/taler-exchange-httpd_responses.c
index 516b3646..fb6bc21d 100644
--- a/src/exchange/taler-exchange-httpd_responses.c
+++ b/src/exchange/taler-exchange-httpd_responses.c
@@ -76,7 +76,7 @@ TEH_RESPONSE_compile_transaction_history (
               &h_wire,
               &deposit->h_contract_terms,
               &deposit->h_age_commitment,
-              NULL /* h_extensions! */,
+              &deposit->h_policy,
               &deposit->h_denom_pub,
               deposit->timestamp,
               &deposit->merchant_pub,
diff --git a/src/exchangedb/plugin_exchangedb_postgres.c b/src/exchangedb/plugin_exchangedb_postgres.c
index 3854469e..a50cbcfc 100644
--- a/src/exchangedb/plugin_exchangedb_postgres.c
+++ b/src/exchangedb/plugin_exchangedb_postgres.c
@@ -6265,9 +6265,9 @@ postgres_do_deposit (
     GNUNET_PQ_query_param_auto_from_type (&deposit->csig),
     GNUNET_PQ_query_param_uint64 (&deposit_shard),
     GNUNET_PQ_query_param_bool (extension_blocked),
-    (NULL == deposit->extension_details)
+    (NULL == deposit->policy_details)
     ? GNUNET_PQ_query_param_null ()
-    : TALER_PQ_query_param_json (deposit->extension_details),
+    : TALER_PQ_query_param_json (deposit->policy_details),
     GNUNET_PQ_query_param_end
   };
   struct GNUNET_PQ_ResultSpec rs[] = {
diff --git a/src/extensions/policy_brandt_vickrey_auction/policy_brandt_vickrey_auction.c b/src/extensions/policy_brandt_vickrey_auction/policy_brandt_vickrey_auction.c
index daf91ccb..160250a6 100644
--- a/src/extensions/policy_brandt_vickrey_auction/policy_brandt_vickrey_auction.c
+++ b/src/extensions/policy_brandt_vickrey_auction/policy_brandt_vickrey_auction.c
@@ -170,7 +170,7 @@ parse_transcript (const json_t *jtr,
       GNUNET_JSON_spec_fixed_auto ("pubkey", &tr->seller_pub),
       GNUNET_JSON_spec_timestamp ("time_start", &tr->time_start),
       GNUNET_JSON_spec_relative_time ("time_round", &tr->time_round),
-      GNUNET_JSON_spec_string ("payto", &tr->payto),
+      GNUNET_JSON_spec_string ("payto_uri", &tr->payto),
       GNUNET_JSON_spec_end ()
     };
 
diff --git a/src/include/taler_auditor_service.h b/src/include/taler_auditor_service.h
index 30d18e6e..c20b789c 100644
--- a/src/include/taler_auditor_service.h
+++ b/src/include/taler_auditor_service.h
@@ -233,7 +233,7 @@ typedef void
  *
  * @param auditor the auditor handle; the auditor must be ready to operate
  * @param h_wire hash of merchant wire details
- * @param h_extensions hash over the extensions, if any
+ * @param h_policy hash over the policy, if any
  * @param h_contract_terms hash of the contact of the merchant with the customer (further details are never disclosed to the auditor)
  * @param exchange_timestamp timestamp when the contract was finalized, must not be too far in the future
  * @param wire_deadline date until which the exchange should wire the funds
@@ -257,7 +257,7 @@ struct TALER_AUDITOR_DepositConfirmationHandle *
 TALER_AUDITOR_deposit_confirmation (
   struct TALER_AUDITOR_Handle *auditor,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp wire_deadline,
diff --git a/src/include/taler_auditordb_plugin.h b/src/include/taler_auditordb_plugin.h
index dff96700..3f7bc658 100644
--- a/src/include/taler_auditordb_plugin.h
+++ b/src/include/taler_auditordb_plugin.h
@@ -317,9 +317,9 @@ struct TALER_AUDITORDB_DepositConfirmation
   struct TALER_PrivateContractHashP h_contract_terms;
 
   /**
-   * Hash over the extensions for the deposit.
+   * Hash over the policy for the deposit.
    */
-  struct TALER_ExtensionContractHashP h_extensions;
+  struct TALER_ExtensionPolicyHashP h_policy;
 
   /**
    * Hash over the wiring information of the merchant.
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index 228331e9..88aaf845 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -638,10 +638,10 @@ struct TALER_PrivateContractHashP
 
 
 /**
- * Hash used to represent the "public" extensions to
- * a contract that is shared with the exchange.
+ * Hash used to represent the policy to a contract that is shared with the
+ * exchange.
  */
-struct TALER_ExtensionContractHashP
+struct TALER_ExtensionPolicyHashP
 {
   /**
    * Actual hash value.
@@ -3239,7 +3239,7 @@ TALER_wallet_reserve_attest_request_verify (
  * @param h_wire hash of the merchant’s account details
  * @param h_contract_terms hash of the contact of the merchant with the customer (further details are never disclosed to the exchange)
  * @param h_age_commitment hash over the age commitment, if applicable to the denomination (maybe NULL)
- * @param h_extensions hash over the extensions
+ * @param h_policy hash over the policy
  * @param h_denom_pub hash of the coin denomination's public key
  * @param coin_priv coin’s private key
  * @param wallet_timestamp timestamp when the contract was finalized, must not be too far in the future
@@ -3254,7 +3254,7 @@ TALER_wallet_deposit_sign (
   const struct TALER_MerchantWireHashP *h_wire,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_AgeCommitmentHash *h_age_commitment,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_DenominationHashP *h_denom_pub,
   struct GNUNET_TIME_Timestamp wallet_timestamp,
   const struct TALER_MerchantPublicKeyP *merchant_pub,
@@ -3271,7 +3271,7 @@ TALER_wallet_deposit_sign (
  * @param h_wire hash of the merchant’s account details
  * @param h_contract_terms hash of the contact of the merchant with the customer (further details are never disclosed to the exchange)
  * @param h_age_commitment hash over the age commitment (maybe all zeroes, if not applicable to the denomination)
- * @param h_extensions hash over the extensions
+ * @param h_policy hash over the policy
  * @param h_denom_pub hash of the coin denomination's public key
  * @param wallet_timestamp timestamp when the contract was finalized, must not be too far in the future
  * @param merchant_pub the public key of the merchant (used to identify the merchant for refund requests)
@@ -3287,7 +3287,7 @@ TALER_wallet_deposit_verify (
   const struct TALER_MerchantWireHashP *h_wire,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_AgeCommitmentHash *h_age_commitment,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_DenominationHashP *h_denom_pub,
   struct GNUNET_TIME_Timestamp wallet_timestamp,
   const struct TALER_MerchantPublicKeyP *merchant_pub,
@@ -3692,7 +3692,7 @@ typedef enum TALER_ErrorCode
  * @param scb function to call to create the signature
  * @param h_contract_terms hash of the contact of the merchant with the customer (further details are never disclosed to the exchange)
  * @param h_wire hash of the merchant’s account details
- * @param h_extensions hash over the extensions, can be NULL
+ * @param h_policy hash over the policy, can be NULL
  * @param exchange_timestamp timestamp when the contract was finalized, must not be too far off
  * @param wire_deadline date until which the exchange should wire the funds
  * @param refund_deadline date until which the merchant can issue a refund to the customer via the exchange (can be zero if refunds are not allowed); must not be after the @a wire_deadline
@@ -3708,7 +3708,7 @@ TALER_exchange_online_deposit_confirmation_sign (
   TALER_ExchangeSignCallback scb,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp wire_deadline,
   struct GNUNET_TIME_Timestamp refund_deadline,
@@ -3724,7 +3724,7 @@ TALER_exchange_online_deposit_confirmation_sign (
  *
  * @param h_contract_terms hash of the contact of the merchant with the customer (further details are never disclosed to the exchange)
  * @param h_wire hash of the merchant’s account details
- * @param h_extensions hash over the extensions, can be NULL
+ * @param h_policy hash over the policy, can be NULL
  * @param exchange_timestamp timestamp when the contract was finalized, must not be too far off
  * @param wire_deadline date until which the exchange should wire the funds
  * @param refund_deadline date until which the merchant can issue a refund to the customer via the exchange (can be zero if refunds are not allowed); must not be after the @a wire_deadline
@@ -3739,7 +3739,7 @@ enum GNUNET_GenericReturnValue
 TALER_exchange_online_deposit_confirmation_verify (
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp wire_deadline,
   struct GNUNET_TIME_Timestamp refund_deadline,
@@ -5242,7 +5242,7 @@ TALER_merchant_contract_sign (
 /* **************** /management/extensions offline signing **************** */
 
 /**
- * Create a signature for the hash of the manifests of extensionss
+ * Create a signature for the hash of the manifests of extensions
  *
  * @param h_manifests hash of the JSON object representing the manifests
  * @param master_priv private key to sign with
diff --git a/src/include/taler_exchangedb_plugin.h b/src/include/taler_exchangedb_plugin.h
index 1cca0bc2..31ccf81c 100644
--- a/src/include/taler_exchangedb_plugin.h
+++ b/src/include/taler_exchangedb_plugin.h
@@ -1380,10 +1380,16 @@ struct TALER_EXCHANGEDB_Deposit
   char *receiver_wire_account;
 
   /**
-   * Additional details for extensions relevant for this
+   * Additional details for a policy relevant for this
    * deposit operation, possibly NULL!
    */
-  json_t *extension_details;
+  json_t *policy_details;
+  bool no_policy_details;
+
+  /**
+   * Hash over the @e policy_details.  Only filled if no_policy_details is false.
+   */
+  struct TALER_ExtensionPolicyHashP h_policy;
 
   /**
    * Time when this request was generated.  Used, for example, to
@@ -1457,6 +1463,12 @@ struct TALER_EXCHANGEDB_DepositListEntry
   struct TALER_PrivateContractHashP h_contract_terms;
 
   /**
+   * Hash over the poliy data for this deposit
+   * (remains unknown to the Exchange).
+   */
+  struct TALER_ExtensionPolicyHashP h_policy;
+
+  /**
    * Hash of the public denomination key used to sign the coin.
    */
   struct TALER_DenominationHashP h_denom_pub;
diff --git a/src/include/taler_json_lib.h b/src/include/taler_json_lib.h
index b89571df..123fe63a 100644
--- a/src/include/taler_json_lib.h
+++ b/src/include/taler_json_lib.h
@@ -767,14 +767,14 @@ TALER_JSON_wire_to_payto (const json_t *wire_s);
 
 
 /**
- * Hash @a extensions in deposits.
+ * Hash @a policy in deposits.
  *
- * @param extensions contract extensions to hash
- * @param[out] ech where to write the extension hash
+ * @param policy contract policy to hash
+ * @param[out] ech where to write the policy hash
  */
 void
-TALER_deposit_extension_hash (const json_t *extensions,
-                              struct TALER_ExtensionContractHashP *ech);
+TALER_deposit_policy_hash (const json_t *policy,
+                           struct TALER_ExtensionPolicyHashP *ech);
 
 /**
  * Hash the @a config of an extension, given as JSON
diff --git a/src/json/json.c b/src/json/json.c
index fe34d37f..6dfd483e 100644
--- a/src/json/json.c
+++ b/src/json/json.c
@@ -1008,12 +1008,12 @@ TALER_JSON_get_error_code2 (const void *data,
 
 
 void
-TALER_deposit_extension_hash (const json_t *extensions,
-                              struct TALER_ExtensionContractHashP *ech)
+TALER_deposit_policy_hash (const json_t *policy,
+                           struct TALER_ExtensionPolicyHashP *ech)
 {
   GNUNET_assert (GNUNET_OK ==
-                 dump_and_hash (extensions,
-                                "taler-contract-extensions",
+                 dump_and_hash (policy,
+                                "taler-extensions-policy",
                                 &ech->hash));
 }
 
diff --git a/src/lib/auditor_api_deposit_confirmation.c b/src/lib/auditor_api_deposit_confirmation.c
index c4542d0e..0dc3ed1e 100644
--- a/src/lib/auditor_api_deposit_confirmation.c
+++ b/src/lib/auditor_api_deposit_confirmation.c
@@ -153,7 +153,7 @@ handle_deposit_confirmation_finished (void *cls,
  * Verify signature information about the deposit-confirmation.
  *
  * @param h_wire hash of merchant wire details
- * @param h_extensions hash over the extensions, if any
+ * @param h_policy hash over the extensions, if any
  * @param h_contract_terms hash of the contact of the merchant with the customer (further details are never disclosed to the auditor)
  * @param exchange_timestamp timestamp when the deposit was received by the wallet
  * @param wire_deadline by what time must the amount be wired to the merchant
@@ -172,7 +172,7 @@ handle_deposit_confirmation_finished (void *cls,
  */
 static enum GNUNET_GenericReturnValue
 verify_signatures (const struct TALER_MerchantWireHashP *h_wire,
-                   const struct TALER_ExtensionContractHashP *h_extensions,
+                   const struct TALER_ExtensionPolicyHashP *h_policy,
                    const struct TALER_PrivateContractHashP *h_contract_terms,
                    struct GNUNET_TIME_Timestamp exchange_timestamp,
                    struct GNUNET_TIME_Timestamp wire_deadline,
@@ -192,7 +192,7 @@ verify_signatures (const struct TALER_MerchantWireHashP *h_wire,
       TALER_exchange_online_deposit_confirmation_verify (
         h_contract_terms,
         h_wire,
-        h_extensions,
+        h_policy,
         exchange_timestamp,
         wire_deadline,
         refund_deadline,
@@ -239,7 +239,7 @@ struct TALER_AUDITOR_DepositConfirmationHandle *
 TALER_AUDITOR_deposit_confirmation (
   struct TALER_AUDITOR_Handle *auditor,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp wire_deadline,
@@ -266,7 +266,7 @@ TALER_AUDITOR_deposit_confirmation (
                  TALER_AUDITOR_handle_is_ready_ (auditor));
   if (GNUNET_OK !=
       verify_signatures (h_wire,
-                         h_extensions,
+                         h_policy,
                          h_contract_terms,
                          exchange_timestamp,
                          wire_deadline,
@@ -290,8 +290,8 @@ TALER_AUDITOR_deposit_confirmation (
     = GNUNET_JSON_PACK (
         GNUNET_JSON_pack_data_auto ("h_wire",
                                     h_wire),
-        GNUNET_JSON_pack_data_auto ("h_extensions",
-                                    h_extensions),
+        GNUNET_JSON_pack_data_auto ("h_policy",
+                                    h_policy),
         GNUNET_JSON_pack_data_auto ("h_contract_terms",
                                     h_contract_terms),
         GNUNET_JSON_pack_timestamp ("exchange_timestamp",
diff --git a/src/lib/exchange_api_batch_deposit.c b/src/lib/exchange_api_batch_deposit.c
index 39c1c9b4..43f7d2d4 100644
--- a/src/lib/exchange_api_batch_deposit.c
+++ b/src/lib/exchange_api_batch_deposit.c
@@ -97,9 +97,9 @@ struct TALER_EXCHANGE_BatchDepositHandle
   struct TALER_MerchantWireHashP h_wire;
 
   /**
-   * Hash over the extensions, or all zero.
+   * Hash over the policy, or all zero.
    */
-  struct TALER_ExtensionContractHashP h_extensions;
+  struct TALER_ExtensionPolicyHashP h_policy;
 
   /**
    * Time when this confirmation was generated / when the exchange received
@@ -185,7 +185,7 @@ auditor_cb (void *cls,
   aie->dch = TALER_AUDITOR_deposit_confirmation (
     ah,
     &dh->h_wire,
-    &dh->h_extensions,
+    &dh->h_policy,
     &dh->dcd.h_contract_terms,
     dh->exchange_timestamp,
     dh->dcd.wire_deadline,
@@ -317,7 +317,7 @@ handle_deposit_finished (void *cls,
             TALER_exchange_online_deposit_confirmation_verify (
               &dh->dcd.h_contract_terms,
               &dh->h_wire,
-              &dh->h_extensions,
+              &dh->h_policy,
               dh->exchange_timestamp,
               dh->dcd.wire_deadline,
               dh->dcd.refund_deadline,
@@ -493,8 +493,8 @@ TALER_EXCHANGE_batch_deposit (
   dh->num_cdds = num_cdds;
   dh->dcd = *dcd;
   if (NULL != dcd->extension_details)
-    TALER_deposit_extension_hash (dcd->extension_details,
-                                  &dh->h_extensions);
+    TALER_deposit_policy_hash (dcd->extension_details,
+                               &dh->h_policy);
   TALER_merchant_wire_signature_hash (dcd->merchant_payto_uri,
                                       &dcd->wire_salt,
                                       &dh->h_wire);
@@ -533,7 +533,7 @@ TALER_EXCHANGE_batch_deposit (
 
     if (GNUNET_OK !=
         TALER_EXCHANGE_verify_deposit_signature_ (dcd,
-                                                  &dh->h_extensions,
+                                                  &dh->h_policy,
                                                   &dh->h_wire,
                                                   cdd,
                                                   dki))
diff --git a/src/lib/exchange_api_common.c b/src/lib/exchange_api_common.c
index 2cb379f8..30d609bd 100644
--- a/src/lib/exchange_api_common.c
+++ b/src/lib/exchange_api_common.c
@@ -724,7 +724,8 @@ help_deposit (struct CoinHistoryParseContext *pc,
 {
   struct TALER_MerchantWireHashP h_wire;
   struct TALER_PrivateContractHashP h_contract_terms;
-  // struct TALER_ExtensionContractHashP h_extensions; // FIXME #7270!
+  struct TALER_ExtensionPolicyHashP h_policy;
+  bool no_h_policy;
   struct GNUNET_TIME_Timestamp wallet_timestamp;
   struct TALER_MerchantPublicKeyP merchant_pub;
   struct GNUNET_TIME_Timestamp refund_deadline = {0};
@@ -740,6 +741,10 @@ help_deposit (struct CoinHistoryParseContext *pc,
     GNUNET_JSON_spec_fixed_auto ("h_wire",
                                  &h_wire),
     GNUNET_JSON_spec_mark_optional (
+      GNUNET_JSON_spec_fixed_auto ("h_policy",
+                                   &h_policy),
+      &no_h_policy),
+    GNUNET_JSON_spec_mark_optional (
       GNUNET_JSON_spec_fixed_auto ("h_age_commitment",
                                    &hac),
       &no_hac),
@@ -771,7 +776,7 @@ help_deposit (struct CoinHistoryParseContext *pc,
         &h_wire,
         &h_contract_terms,
         no_hac ? NULL : &hac,
-        NULL /* h_extensions! */,
+        no_h_policy ? NULL : &h_policy,
         &pc->dk->h_key,
         wallet_timestamp,
         &merchant_pub,
@@ -1905,7 +1910,7 @@ TALER_EXCHANGE_get_min_denomination_ (
 enum GNUNET_GenericReturnValue
 TALER_EXCHANGE_verify_deposit_signature_ (
   const struct TALER_EXCHANGE_DepositContractDetail *dcd,
-  const struct TALER_ExtensionContractHashP *ech,
+  const struct TALER_ExtensionPolicyHashP *ech,
   const struct TALER_MerchantWireHashP *h_wire,
   const struct TALER_EXCHANGE_CoinDepositDetail *cdd,
   const struct TALER_EXCHANGE_DenomPublicKey *dki)
diff --git a/src/lib/exchange_api_common.h b/src/lib/exchange_api_common.h
index a75ed3ed..1412ddb1 100644
--- a/src/lib/exchange_api_common.h
+++ b/src/lib/exchange_api_common.h
@@ -203,7 +203,7 @@ TALER_EXCHANGE_get_min_denomination_ (
  * Verify signature information about the deposit.
  *
  * @param dcd contract details
- * @param ech hashed contract (passed to avoid recomputation)
+ * @param eph hashed policy (passed to avoid recomputation)
  * @param h_wire hashed wire details (passed to avoid recomputation)
  * @param cdd coin-specific details
  * @param dki denomination of the coin
@@ -212,7 +212,7 @@ TALER_EXCHANGE_get_min_denomination_ (
 enum GNUNET_GenericReturnValue
 TALER_EXCHANGE_verify_deposit_signature_ (
   const struct TALER_EXCHANGE_DepositContractDetail *dcd,
-  const struct TALER_ExtensionContractHashP *ech,
+  const struct TALER_ExtensionPolicyHashP *eph,
   const struct TALER_MerchantWireHashP *h_wire,
   const struct TALER_EXCHANGE_CoinDepositDetail *cdd,
   const struct TALER_EXCHANGE_DenomPublicKey *dki);
diff --git a/src/lib/exchange_api_deposit.c b/src/lib/exchange_api_deposit.c
index 3ba986b2..074f2eb4 100644
--- a/src/lib/exchange_api_deposit.c
+++ b/src/lib/exchange_api_deposit.c
@@ -97,9 +97,9 @@ struct TALER_EXCHANGE_DepositHandle
   struct TALER_MerchantWireHashP h_wire;
 
   /**
-   * Hash over the extensions, or all zero.
+   * Hash over the policy, or all zero.
    */
-  struct TALER_ExtensionContractHashP h_extensions;
+  struct TALER_ExtensionPolicyHashP h_policy;
 
   /**
    * Time when this confirmation was generated / when the exchange received
@@ -177,7 +177,7 @@ auditor_cb (void *cls,
   aie->dch = TALER_AUDITOR_deposit_confirmation (
     ah,
     &dh->h_wire,
-    &dh->h_extensions,
+    &dh->h_policy,
     &dh->dcd.h_contract_terms,
     dh->exchange_timestamp,
     dh->dcd.wire_deadline,
@@ -277,7 +277,7 @@ handle_deposit_finished (void *cls,
           TALER_exchange_online_deposit_confirmation_verify (
             &dh->dcd.h_contract_terms,
             &dh->h_wire,
-            &dh->h_extensions,
+            &dh->h_policy,
             dh->exchange_timestamp,
             dh->dcd.wire_deadline,
             dh->dcd.refund_deadline,
@@ -447,14 +447,14 @@ TALER_EXCHANGE_deposit (
   dh->cdd = *cdd;
   dh->dcd = *dcd;
   if (NULL != dcd->extension_details)
-    TALER_deposit_extension_hash (dcd->extension_details,
-                                  &dh->h_extensions);
+    TALER_deposit_policy_hash (dcd->extension_details,
+                               &dh->h_policy);
   TALER_merchant_wire_signature_hash (dcd->merchant_payto_uri,
                                       &dcd->wire_salt,
                                       &dh->h_wire);
   if (GNUNET_OK !=
       TALER_EXCHANGE_verify_deposit_signature_ (dcd,
-                                                &dh->h_extensions,
+                                                &dh->h_policy,
                                                 &dh->h_wire,
                                                 cdd,
                                                 dki))
diff --git a/src/lib/exchange_api_refund.c b/src/lib/exchange_api_refund.c
index a937c18a..e5409ce1 100644
--- a/src/lib/exchange_api_refund.c
+++ b/src/lib/exchange_api_refund.c
@@ -236,7 +236,8 @@ verify_conflict_history_ok (struct TALER_EXCHANGE_RefundHandle *rh,
       struct TALER_PrivateContractHashP h_contract_terms;
       struct TALER_AgeCommitmentHash h_age_commitment;
       bool no_hac;
-      // struct TALER_ExtensionContractHashP h_extensions; // FIXME #7270!
+      struct TALER_ExtensionPolicyHashP h_policy;
+      bool no_h_policy;
       struct GNUNET_TIME_Timestamp wallet_timestamp;
       struct TALER_MerchantPublicKeyP merchant_pub;
       struct GNUNET_TIME_Timestamp refund_deadline;
@@ -252,6 +253,10 @@ verify_conflict_history_ok (struct TALER_EXCHANGE_RefundHandle *rh,
           GNUNET_JSON_spec_fixed_auto ("h_age_commitment",
                                        &h_age_commitment),
           &no_hac),
+        GNUNET_JSON_spec_mark_optional (
+          GNUNET_JSON_spec_fixed_auto ("h_policy",
+                                       &h_policy),
+          &no_h_policy),
         GNUNET_JSON_spec_timestamp ("timestamp",
                                     &wallet_timestamp),
         GNUNET_JSON_spec_timestamp ("refund_deadline",
@@ -280,7 +285,7 @@ verify_conflict_history_ok (struct TALER_EXCHANGE_RefundHandle *rh,
                                        no_hac
                                        ? NULL
                                        : &h_age_commitment,
-                                       NULL /* FIXME #7270-OEC: h_extensions! */,
+                                       no_h_policy ? NULL : &h_policy,
                                        &h_denom_pub,
                                        wallet_timestamp,
                                        &merchant_pub,
diff --git a/src/testing/testing_api_cmd_auditor_deposit_confirmation.c b/src/testing/testing_api_cmd_auditor_deposit_confirmation.c
index d99b1293..293ecba2 100644
--- a/src/testing/testing_api_cmd_auditor_deposit_confirmation.c
+++ b/src/testing/testing_api_cmd_auditor_deposit_confirmation.c
@@ -199,7 +199,7 @@ deposit_confirmation_run (void *cls,
                           const struct TALER_TESTING_Command *cmd,
                           struct TALER_TESTING_Interpreter *is)
 {
-  static struct TALER_ExtensionContractHashP no_h_extensions;
+  static struct TALER_ExtensionPolicyHashP no_h_policy;
   struct DepositConfirmationState *dcs = cls;
   const struct TALER_TESTING_Command *deposit_cmd;
   struct TALER_MerchantWireHashP h_wire;
@@ -310,7 +310,7 @@ deposit_confirmation_run (void *cls,
   }
   dcs->dc = TALER_AUDITOR_deposit_confirmation (dcs->auditor,
                                                 &h_wire,
-                                                &no_h_extensions,
+                                                &no_h_policy,
                                                 &h_contract_terms,
                                                 *exchange_timestamp,
                                                 *wire_deadline,
diff --git a/src/util/exchange_signatures.c b/src/util/exchange_signatures.c
index d42f70d6..e3844cd5 100644
--- a/src/util/exchange_signatures.c
+++ b/src/util/exchange_signatures.c
@@ -48,10 +48,10 @@ struct TALER_DepositConfirmationPS
   struct TALER_MerchantWireHashP h_wire GNUNET_PACKED;
 
   /**
-   * Hash over the extension options of the deposit, 0 if there
-   * were not extension options.
+   * Hash over the policy extension options of the deposit, 0 if there
+   * was no policy.
    */
-  struct TALER_ExtensionContractHashP h_extensions GNUNET_PACKED;
+  struct TALER_ExtensionPolicyHashP h_policy GNUNET_PACKED;
 
   /**
    * Time when this confirmation was generated / when the exchange received
@@ -101,7 +101,7 @@ TALER_exchange_online_deposit_confirmation_sign (
   TALER_ExchangeSignCallback scb,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp wire_deadline,
   struct GNUNET_TIME_Timestamp refund_deadline,
@@ -123,8 +123,8 @@ TALER_exchange_online_deposit_confirmation_sign (
     .merchant_pub = *merchant_pub
   };
 
-  if (NULL != h_extensions)
-    dcs.h_extensions = *h_extensions;
+  if (NULL != h_policy)
+    dcs.h_policy = *h_policy;
   TALER_amount_hton (&dcs.amount_without_fee,
                      amount_without_fee);
   return scb (&dcs.purpose,
@@ -137,7 +137,7 @@ enum GNUNET_GenericReturnValue
 TALER_exchange_online_deposit_confirmation_verify (
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_MerchantWireHashP *h_wire,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   struct GNUNET_TIME_Timestamp exchange_timestamp,
   struct GNUNET_TIME_Timestamp wire_deadline,
   struct GNUNET_TIME_Timestamp refund_deadline,
@@ -159,8 +159,8 @@ TALER_exchange_online_deposit_confirmation_verify (
     .merchant_pub = *merchant_pub
   };
 
-  if (NULL != h_extensions)
-    dcs.h_extensions = *h_extensions;
+  if (NULL != h_policy)
+    dcs.h_policy = *h_policy;
   TALER_amount_hton (&dcs.amount_without_fee,
                      amount_without_fee);
   if (GNUNET_OK !=
diff --git a/src/util/wallet_signatures.c b/src/util/wallet_signatures.c
index c57506bd..42a86167 100644
--- a/src/util/wallet_signatures.c
+++ b/src/util/wallet_signatures.c
@@ -49,9 +49,9 @@ struct TALER_DepositRequestPS
   struct TALER_AgeCommitmentHash h_age_commitment GNUNET_PACKED;
 
   /**
-   * Hash over extension attributes shared with the exchange.
+   * Hash over policy attributes shared with the exchange.
    */
-  struct TALER_ExtensionContractHashP h_extensions GNUNET_PACKED;
+  struct TALER_ExtensionPolicyHashP h_policy GNUNET_PACKED;
 
   /**
    * Hash over the wiring information of the merchant.
@@ -120,7 +120,7 @@ TALER_wallet_deposit_sign (
   const struct TALER_MerchantWireHashP *h_wire,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_AgeCommitmentHash *h_age_commitment,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_DenominationHashP *h_denom_pub,
   const struct GNUNET_TIME_Timestamp wallet_timestamp,
   const struct TALER_MerchantPublicKeyP *merchant_pub,
@@ -141,8 +141,8 @@ TALER_wallet_deposit_sign (
 
   if (NULL != h_age_commitment)
     dr.h_age_commitment = *h_age_commitment;
-  if (NULL != h_extensions)
-    dr.h_extensions = *h_extensions;
+  if (NULL != h_policy)
+    dr.h_policy = *h_policy;
   TALER_amount_hton (&dr.amount_with_fee,
                      amount);
   TALER_amount_hton (&dr.deposit_fee,
@@ -160,7 +160,7 @@ TALER_wallet_deposit_verify (
   const struct TALER_MerchantWireHashP *h_wire,
   const struct TALER_PrivateContractHashP *h_contract_terms,
   const struct TALER_AgeCommitmentHash *h_age_commitment,
-  const struct TALER_ExtensionContractHashP *h_extensions,
+  const struct TALER_ExtensionPolicyHashP *h_policy,
   const struct TALER_DenominationHashP *h_denom_pub,
   struct GNUNET_TIME_Timestamp wallet_timestamp,
   const struct TALER_MerchantPublicKeyP *merchant_pub,
@@ -178,13 +178,13 @@ TALER_wallet_deposit_verify (
     .refund_deadline = GNUNET_TIME_timestamp_hton (refund_deadline),
     .merchant = *merchant_pub,
     .h_age_commitment = {{{0}}},
-    .h_extensions = {{{0}}}
+    .h_policy = {{{0}}}
   };
 
   if (NULL != h_age_commitment)
     dr.h_age_commitment = *h_age_commitment;
-  if (NULL != h_extensions)
-    dr.h_extensions = *h_extensions;
+  if (NULL != h_policy)
+    dr.h_policy = *h_policy;
   TALER_amount_hton (&dr.amount_with_fee,
                      amount);
   TALER_amount_hton (&dr.deposit_fee,