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, 11 insertions, 25 deletions

diff --git a/src/include/taler_wire_lib.h b/src/include/taler_wire_lib.h
index 68c36e889..0cf38d6d1 100644
--- a/src/include/taler_wire_lib.h
+++ b/src/include/taler_wire_lib.h
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2016 GNUnet e.V.
+  Copyright (C) 2016,2018 Taler Systems SA
 
   TALER is free software; you can redistribute it and/or modify it under the
   terms of the GNU General Public License as published by the Free Software
@@ -26,6 +26,16 @@
 
 
 /**
+ * Obtain the payment method from a @a payto_url
+ *
+ * @param payto_url the URL to parse
+ * @return NULL on error (malformed @a payto_url)
+ */
+char *
+TALER_WIRE_payto_get_method (const char *payto_url);
+
+
+/**
  * Load a WIRE plugin.
  *
  * @param cfg configuration to use
@@ -45,28 +55,4 @@ void
 TALER_WIRE_plugin_unload (struct TALER_WIRE_Plugin *plugin);
 
 
-/**
- * Signature of a function to be called on each enabled
- * wire plugin.
- *
- * @param cls closure
- * @param name name of the enabled plugin
- */
-typedef void
-(*TALER_WIRE_EnabledCallback)(void *cls,
-                              const char *name);
-
-
-/**
- * Check which wire plugins are enabled in @a cfg and call @a cb for each one.
- *
- * @param cfg configuration to use
- * @param cb callback to invoke
- * @param cb_cls closure for @a cb
- */
-void
-TALER_WIRE_find_enabled (const struct GNUNET_CONFIGURATION_Handle *cfg,
-                         TALER_WIRE_EnabledCallback cb,
-                         void *cb_cls);
-
 #endif