[age restriction] progress 9/n

More worke towards support for extensions and age restriction:

- taler-exchange-httpd_management_extensions.c almost completed
  - handling of request implemented
  - stub "set_extensions" for database transaction added

- utility functions added
  - TALER_exchange_offline_extension_agemask_{sign,verify}
  - TALER_agemask_parse_json

1 files changed, 12 insertions, 0 deletions

diff --git a/src/include/taler_json_lib.h b/src/include/taler_json_lib.h
index b20bd4ea4..888256385 100644
--- a/src/include/taler_json_lib.h
+++ b/src/include/taler_json_lib.h
@@ -542,6 +542,18 @@ TALER_deposit_extension_hash (const json_t *extensions,
                               struct TALER_ExtensionContractHash *ech);
 
 
+/**
+ * Parses a JSON object { "extension": "age_restriction", "mask": <uint32> }.
+ *
+ * @param root is the json object
+ * @param[out] mask on succes, will contain the age mask
+ * @return GNUNET_OK on success and GNUNET_SYSERR on failure.
+ */
+enum GNUNET_GenericReturnValue
+TALER_agemask_parse_json (const json_t *root,
+                          struct TALER_AgeMask *mask);
+
+
 #endif /* TALER_JSON_LIB_H_ */
 
 /* End of taler_json_lib.h */