exchange

commit e6a50ff981459c8f634acdb7a06d2ad60080335d
parent f3e67ba34312909ca5600ead77b3eb5a58b40620
Author: Christian Grothoff <grothoff@gnunet.org>
Date:   Wed, 30 Jul 2025 13:02:23 +0200

implement #10207

Diffstat:
M
src/exchange/taler-exchange-httpd.c
 | 
25
+++++++++++++++++++++++++
M
src/exchange/taler-exchange-httpd.h
 | 
6
++++++
M
src/exchange/taler-exchange-httpd_config.c
 | 
7
+++++++
M
src/exchange/taler-exchange-httpd_config.h
 | 
4
++--
M
src/exchange/taler-exchange-httpd_keys.c
 | 
4
++++

5 files changed, 44 insertions(+), 2 deletions(-)
diff --git a/src/exchange/taler-exchange-httpd.c b/src/exchange/taler-exchange-httpd.c
@@ -200,6 +200,12 @@ json_t *TEH_zero_limits;
 char *TEH_shopping_url;
 
 /**
+ * URL where wallets can find an open banking gateway API to
+ * initiate wire transfers to withdraw money from this exchange. Can be NULL.
+ */
+char *TEH_obg_url;
+
+/**
  * Where to redirect users from "/"?
  */
 static char *toplevel_redirect_url;
@@ -2338,6 +2344,25 @@ exchange_serve_process_config (const char *cfg_fn)
                                "invalid URL");
     return GNUNET_SYSERR;
   }
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_string (TEH_cfg,
+                                             "exchange",
+                                             "OPEN_BANKING_GATEWAY_URL",
+                                             &TEH_obg_url))
+  {
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_INFO,
+                               "exchange",
+                               "OPEN_BANKING_GATEWAY_URL");
+  }
+  if ( (NULL != TEH_obg_url) &&
+       (! TALER_is_web_url (TEH_obg_url)) )
+  {
+    GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
+                               "exchange",
+                               "OPEN_BANKING_GATEWAY_URL",
+                               "invalid URL");
+    return GNUNET_SYSERR;
+  }
 
   {
     char *master_public_key_str;
diff --git a/src/exchange/taler-exchange-httpd.h b/src/exchange/taler-exchange-httpd.h
@@ -149,6 +149,12 @@ extern struct TALER_Amount TEH_tiny_amount;
 extern char *TEH_shopping_url;
 
 /**
+ * URL where wallets can find an open banking gateway API to
+ * initiate wire transfers to withdraw money from this exchange. Can be NULL.
+ */
+extern char *TEH_obg_url;
+
+/**
  * Linear STEFAN parameter.
  */
 extern float TEH_stefan_lin;
diff --git a/src/exchange/taler-exchange-httpd_config.c b/src/exchange/taler-exchange-httpd_config.c
@@ -62,6 +62,13 @@ TEH_handler_config (struct TEH_RequestContext *rc,
         GNUNET_JSON_pack_string (
           "aml_spa_dialect",
           TEH_aml_spa_dialect)),
+      GNUNET_JSON_pack_allow_null (
+        GNUNET_JSON_pack_string ("shopping_url",
+                                 TEH_shopping_url)),
+      GNUNET_JSON_pack_allow_null (
+        GNUNET_JSON_pack_string (
+          "open_banking_gateway",
+          TEH_obg_url)),
       GNUNET_JSON_pack_string (
         "implementation",
         "urn:net:taler:specs:taler-exchange:c-reference"),
diff --git a/src/exchange/taler-exchange-httpd_config.h b/src/exchange/taler-exchange-httpd_config.h
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  (C) 2023 Taler Systems SA
+  (C) 2025 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
@@ -41,7 +41,7 @@
  *
  * Returned via both /config and /keys endpoints.
  */
-#define EXCHANGE_PROTOCOL_VERSION "30:2:8"
+#define EXCHANGE_PROTOCOL_VERSION "30:3:8"
 
 
 /**
diff --git a/src/exchange/taler-exchange-httpd_keys.c b/src/exchange/taler-exchange-httpd_keys.c
@@ -2491,6 +2491,10 @@ create_krd (struct TEH_KeyStateHandle *ksh,
       GNUNET_JSON_pack_string ("shopping_url",
                                TEH_shopping_url)),
     GNUNET_JSON_pack_allow_null (
+      GNUNET_JSON_pack_string (
+        "open_banking_gateway",
+        TEH_obg_url)),
+    GNUNET_JSON_pack_allow_null (
       TALER_amount_is_zero (&TEH_tiny_amount)
       ? GNUNET_JSON_pack_string ("dummy",
                                  NULL)