implement /config to query e.g. currency

4 files changed, 110 insertions, 1 deletions

diff --git a/src/backend/Makefile.am b/src/backend/Makefile.am
index 67ba825b..f5476df0 100644
--- a/src/backend/Makefile.am
+++ b/src/backend/Makefile.am
@@ -30,7 +30,8 @@ taler_merchant_httpd_SOURCES = \
   taler-merchant-httpd_track-transfer.c taler-merchant-httpd_track-transfer.h \
   taler-merchant-httpd_refund.c taler-merchant-httpd_refund.h \
   taler-merchant-httpd_check-payment.c taler-merchant-httpd_check-payment.h \
-  taler-merchant-httpd_trigger-pay.c taler-merchant-httpd_trigger-pay.h
+  taler-merchant-httpd_trigger-pay.c taler-merchant-httpd_trigger-pay.h \
+  taler-merchant-httpd_config.c taler-merchant-httpd_config.h
 
 
 taler_merchant_httpd_LDADD = \
diff --git a/src/backend/taler-merchant-httpd.c b/src/backend/taler-merchant-httpd.c
index 4b2f3499..9cc198e5 100644
--- a/src/backend/taler-merchant-httpd.c
+++ b/src/backend/taler-merchant-httpd.c
@@ -48,6 +48,7 @@
 #include "taler-merchant-httpd_refund.h"
 #include "taler-merchant-httpd_check-payment.h"
 #include "taler-merchant-httpd_trigger-pay.h"
+#include "taler-merchant-httpd_config.h"
 
 /**
  * Backlog for listen operation on unix-domain sockets.
@@ -291,6 +292,9 @@ url_handler (void *cls,
       { "/public/trigger-pay", MHD_HTTP_METHOD_GET, "text/plain",
         NULL, 0,
         &MH_handler_trigger_pay, MHD_HTTP_OK},
+      { "/config", MHD_HTTP_METHOD_GET, "text/plain",
+        NULL, 0,
+        &MH_handler_config, MHD_HTTP_OK},
       {NULL, NULL, NULL, NULL, 0, 0 }
     };
   static struct TMH_RequestHandler h404 =
diff --git a/src/backend/taler-merchant-httpd_config.c b/src/backend/taler-merchant-httpd_config.c
new file mode 100644
index 00000000..931270f1
--- /dev/null
+++ b/src/backend/taler-merchant-httpd_config.c
@@ -0,0 +1,61 @@
+/*
+  This file is part of TALER
+  (C) 2019 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU Affero General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file backend/taler-merchant-httpd_config.c
+ * @brief implement API for querying configuration data of the backend
+ * @author Florian Dold
+ */
+#include "platform.h"
+#include <jansson.h>
+#include <taler/taler_util.h>
+#include <taler/taler_json_lib.h>
+#include "taler-merchant-httpd.h"
+#include "taler-merchant-httpd_mhd.h"
+#include "taler-merchant-httpd_parsing.h"
+#include "taler-merchant-httpd_exchanges.h"
+#include "taler-merchant-httpd_responses.h"
+#include "taler-merchant-httpd_tip-query.h"
+#include "taler-merchant-httpd_tip-reserve-helper.h"
+
+
+/**
+ * Handle a "/config" request.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] connection_cls the connection's closure (can be updated)
+ * @param upload_data upload data
+ * @param[in,out] upload_data_size number of bytes (left) in @a upload_data
+ * @return MHD result code
+ */
+int
+MH_handler_config (struct TMH_RequestHandler *rh,
+                   struct MHD_Connection *connection,
+                   void **connection_cls,
+                   const char *upload_data,
+                   size_t *upload_data_size)
+{
+  int ret;
+  ret = TMH_RESPONSE_reply_json_pack (connection,
+                                      MHD_HTTP_OK,
+                                      "{s:s}",
+                                      "currency", TMH_currency);
+
+
+  return ret;
+}
+
+/* end of taler-merchant-httpd_config.c */
diff --git a/src/backend/taler-merchant-httpd_config.h b/src/backend/taler-merchant-httpd_config.h
new file mode 100644
index 00000000..cff766eb
--- /dev/null
+++ b/src/backend/taler-merchant-httpd_config.h
@@ -0,0 +1,43 @@
+/*
+  This file is part of TALER
+  (C) 2019 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
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file backend/taler-merchant-httpd_config.h
+ * @brief headers for /config handler
+ * @author Florian Dold
+ */
+#ifndef TALER_MERCHANT_HTTPD_CONFIG_H
+#define TALER_MERCHANT_HTTPD_CONFIG_H
+#include <microhttpd.h>
+#include "taler-merchant-httpd.h"
+
+/**
+ * Manages a /config call.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] connection_cls the connection's closure (can be updated)
+ * @param upload_data upload data
+ * @param[in,out] upload_data_size number of bytes (left) in @a upload_data
+ * @return MHD result code
+ */
+int
+MH_handler_config (struct TMH_RequestHandler *rh,
+                   struct MHD_Connection *connection,
+                   void **connection_cls,
+                   const char *upload_data,
+                   size_t *upload_data_size);
+
+#endif