From 7a1a7b5ba308fd4fbc6125df960d8841ba9eff7b Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Sun, 1 Sep 2019 22:46:24 +0200
Subject: teach config about instances

---
 src/backend/taler-merchant-httpd_config.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/backend/taler-merchant-httpd_config.c b/src/backend/taler-merchant-httpd_config.c
index 931270f1..51d44729 100644
--- a/src/backend/taler-merchant-httpd_config.c
+++ b/src/backend/taler-merchant-httpd_config.c
@@ -49,12 +49,27 @@ MH_handler_config (struct TMH_RequestHandler *rh,
                    size_t *upload_data_size)
 {
   int ret;
+  const char *instance_str;
+  struct MerchantInstance *mi;
+
+  instance_str = MHD_lookup_connection_value (connection,
+                                              MHD_GET_ARGUMENT_KIND,
+                                              "instance");
+  if (NULL == instance_str)
+    instance_str = "default";
+
+  mi = TMH_lookup_instance (instance_str);
+
+  if (NULL == mi)
+    return TMH_RESPONSE_reply_bad_request (connection,
+                                           TALER_EC_CHECK_PAYMENT_INSTANCE_UNKNOWN,
+                                           "merchant instance unknown");
+
   ret = TMH_RESPONSE_reply_json_pack (connection,
                                       MHD_HTTP_OK,
                                       "{s:s}",
                                       "currency", TMH_currency);
 
-
   return ret;
 }
 
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