/keys API.

Adding method to override the last_denom value for a key set.

src/include/taler_exchange_service.h

@@ -422,6 +422,16 @@ TALER_EXCHANGE_disconnect (struct TALER_EXCHANGE_Handle *exchange);
 const struct TALER_EXCHANGE_Keys *
 TALER_EXCHANGE_get_keys (struct TALER_EXCHANGE_Handle *exchange);
 
+/**
+ * Let the user set the last valid denomination time manually.
+ *
+ * @param exchange the exchange handle.
+ * @param last_denom_new new last denomination time.
+ */
+void
+TALER_EXCHANGE_set_last_denom (struct TALER_EXCHANGE_Handle *exchange,
+                               struct GNUNET_TIME_Absolute last_denom_new);
+
 
 /**
  * Check if our current response for /keys is valid, and if

src/include/taler_testing_lib.h

@@ -1424,6 +1424,34 @@ TALER_TESTING_cmd_check_keys_pull_all_keys
    unsigned int num_denom_keys);
 
 
+/**
+ * Make a "check keys" command.  This type of command
+ * checks whether the number of denomination keys from
+ * @a exchange matches @a num_denom_keys.  Additionally,
+ * it lets the user set a last denom issue date to be
+ * used in the request for /keys.
+ *
+ * @param label command label
+ * @param generation when this command is run, exactly @a
+ *        generation /keys downloads took place.  If the number
+ *        of downloads is less than @a generation, the logic will
+ *        first make sure that @a generation downloads are done,
+ *        and _then_ execute the rest of the command.
+ * @param num_denom_keys expected number of denomination keys.
+ * @param exchange connection handle to the exchange to test.
+ * @param last_denom_date date to be set in the "last_denom_issue"
+ *        URL parameter of /keys.
+ *
+ * @return the command.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_check_keys_with_last_denom
+  (const char *label,
+   unsigned int generation,
+   unsigned int num_denom_keys,
+   struct GNUNET_TIME_Absolute last_denom_date);
+
+
 /**
  * Create a "batch" command.  Such command takes a
  * end_CMD-terminated array of CMDs and executed them.

src/lib/exchange_api_handle.c

@@ -1030,6 +1030,21 @@ request_keys (void *cls);
 void
 TEAH_handle_reset (struct TALER_EXCHANGE_Handle *h);
 
+
+
+/**
+ * Let the user set the last valid denomination time manually.
+ *
+ * @param exchange the exchange handle.
+ * @param last_denom_new new last denomination time.
+ */
+void
+TALER_EXCHANGE_set_last_denom (struct TALER_EXCHANGE_Handle *exchange,
+                               struct GNUNET_TIME_Absolute last_denom_new)
+{
+  exchange->key_data.last_denom_issue_date = last_denom_new;
+}
+
 /**
  * Check if our current response for /keys is valid, and if
  * not trigger download.
@@ -1047,8 +1062,12 @@ TALER_EXCHANGE_check_keys_current (struct TALER_EXCHANGE_Handle *exchange,
 {
   if (NULL != exchange->kr)
     return GNUNET_TIME_UNIT_ZERO_ABS;
+
   if (GNUNET_YES == pull_all_keys)
+  {
+    GNUNET_assert (GNUNET_YES == force_download);
     TEAH_handle_reset (exchange);
+  }
   if ( (GNUNET_NO == force_download) &&
        (0 < GNUNET_TIME_absolute_get_remaining (exchange->key_data_expiration).rel_value_us) )
     return exchange->key_data_expiration;

src/lib/test_exchange_api_overlapping_keys_bug.c

@@ -96,12 +96,11 @@ run (void *cls,
                                   1,
                                   4),
 
-    /**
+    /* Causes GET /keys?last_denom_issue=0 */
-     * Avoid cherry-pick, just GET /keys.
+    TALER_TESTING_cmd_check_keys_with_last_denom ("second-download",
-     */
+                                                  2,
-    TALER_TESTING_cmd_check_keys_pull_all_keys ("second-download",
+                                                  8,
-                                                2,
+                                                  GNUNET_TIME_UNIT_ZERO_ABS),
-                                                4),
     TALER_TESTING_cmd_end ()
   };
 

src/lib/testing_api_cmd_check_keys.c

@@ -54,6 +54,20 @@ struct CheckKeysState
    * downloaded.
    */
   unsigned int pull_all_keys;
+
+  /**
+   * If GNUNET_YES, then the user must specify the
+   * last_denom_issue_date manually.  This way, it is possible
+   * to force whatever X value here: /keys?last_denom_issue=X.
+   */
+  unsigned int set_last_denom;
+
+  /**
+   * Value X to set as the URL parameter:
+   * "/keys?last_denom_issue=X" is used only when `set_last_denom'
+   * equals GNUNET_YES.
+   */
+  struct GNUNET_TIME_Absolute last_denom_date;
 };
 
 
@@ -82,6 +96,13 @@ check_keys_run (void *cls,
     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                 "Triggering GET /keys, cmd `%s'\n",
                 cmd->label);
+    
+    if (GNUNET_YES == cks->set_last_denom)
+    {
+      TALER_LOG_DEBUG ("Forcing last_denom_date URL argument\n");
+      TALER_EXCHANGE_set_last_denom (is->exchange,
+                                     cks->last_denom_date);  
+    }
 
     /* Means re-download /keys.  */
     GNUNET_break
@@ -134,6 +155,51 @@ check_keys_cleanup (void *cls,
 }
 
 
+/**
+ * Make a "check keys" command.  This type of command
+ * checks whether the number of denomination keys from
+ * @a exchange matches @a num_denom_keys.  Additionally,
+ * it lets the user set a last denom issue date to be
+ * used in the request for /keys.
+ *
+ * @param label command label
+ * @param generation when this command is run, exactly @a
+ *        generation /keys downloads took place.  If the number
+ *        of downloads is less than @a generation, the logic will
+ *        first make sure that @a generation downloads are done,
+ *        and _then_ execute the rest of the command.
+ * @param num_denom_keys expected number of denomination keys.
+ * @param exchange connection handle to the exchange to test.
+ * @param last_denom_date date to be set in the "last_denom_issue"
+ *        URL parameter of /keys.
+ *
+ * @return the command.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_check_keys_with_last_denom
+  (const char *label,
+   unsigned int generation,
+   unsigned int num_denom_keys,
+   struct GNUNET_TIME_Absolute last_denom_date)
+{
+  struct CheckKeysState *cks;
+
+  cks = GNUNET_new (struct CheckKeysState);
+  cks->generation = generation;
+  cks->num_denom_keys = num_denom_keys;
+  cks->set_last_denom = GNUNET_YES;
+  cks->last_denom_date = last_denom_date;
+
+  struct TALER_TESTING_Command cmd = {
+    .cls = cks,
+    .label = label,
+    .run = &check_keys_run,
+    .cleanup = &check_keys_cleanup
+  };
+
+  return cmd;
+}
+
 /**
  * Make a "check keys" command.  This type of command
  * checks whether the number of denomination keys from