Changing configuration structure to enable multiple accounts.

This change enables using multiple wire plugins at the same time.
Also, we now distinguish between the wire plugin (i.e. EBICS or
taler_bank) and the wire method (i.e. SEPA or x-taler-bank) that
the wire plugin is implementing.  The "taler-bank" wire method
was renamed from "test" to "x-taler-bank".

This also changes the format of the /wire response of the exchange,
as we now need to return multiple accounts.  Note that wire fees
are specified per wire method, not per wire account.

taler-exchange-keyup now automatically signs all of the /wire
responses in the location specified by the configuration.

Account identification in wire plugins was changed to use
payto://-URLs instead of method-specific JSON fields.  Signing
and validation of /wire responses was moved from each wire
plugin to a generic validation method in libtalerutil (crypto)
or libtalerjson (for JSON-formatted inputs).
Convenience methods were added to generate JSON for wire accounts
(salting, signing).

Various section and option names were adjusted to streamline the
configuration and make it more consistent overall.  Documentation
was updated as well.

1 files changed, 8 insertions, 9 deletions

diff --git a/src/exchange/taler-exchange-httpd_wire.c b/src/exchange/taler-exchange-httpd_wire.c
index 69b800ff8..bbbf3fb48 100644
--- a/src/exchange/taler-exchange-httpd_wire.c
+++ b/src/exchange/taler-exchange-httpd_wire.c
@@ -74,20 +74,20 @@ fees_to_json (struct TALER_EXCHANGEDB_AggregateFees *af)
 
 
 /**
- * Obtain fee structure for @a wire_plugin_name wire transfers.
+ * Obtain fee structure for @a method wire transfers.
  *
- * @param wire_plugin_name name of the plugin to load fees for
+ * @param method method to load fees for
  * @return JSON object (to be freed by caller) with fee structure
  */
 json_t *
-TEH_WIRE_get_fees (const char *wire_plugin_name)
+TEH_WIRE_get_fees (const char *method)
 {
   struct TALER_EXCHANGEDB_AggregateFees *af;
   json_t *j;
   struct GNUNET_TIME_Absolute now;
 
   af = TALER_EXCHANGEDB_fees_read (cfg,
-                                   wire_plugin_name);
+                                   method);
   now = GNUNET_TIME_absolute_get ();
   while ( (NULL != af) &&
           (af->end_date.abs_value_us < now.abs_value_us) )
@@ -101,7 +101,7 @@ TEH_WIRE_get_fees (const char *wire_plugin_name)
   {
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Failed to find current wire transfer fees for `%s'\n",
-                wire_plugin_name);
+                method);
     return NULL;
   }
   j = fees_to_json (af);
@@ -143,9 +143,8 @@ TEH_WIRE_handler_wire (struct TEH_RequestHandler *rh,
 int
 TEH_WIRE_init ()
 {
-  wire_methods = TEH_VALIDATION_get_wire_methods ();
-  if ( (NULL == wire_methods) ||
-       (0 == json_object_size (wire_methods)) )
+  wire_methods = TEH_VALIDATION_get_wire_response ();
+  if (NULL == wire_methods)
   {
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Failed to find properly configured wire transfer method\n");
@@ -156,7 +155,7 @@ TEH_WIRE_init ()
 
 
 /**
- * Initialize libgcrypt.
+ * Clean up wire subsystem.
  */
 void  __attribute__ ((destructor))
 TEH_wire_cleanup ()