merchant

commit 6520fde88e315cd398277c7498329c60eefa808b
parent f432e22ff0e34ae0573cee58b783adbfbc54d1ec
Author: Marcello Stanisci <marcello.stanisci@inria.fr>
Date:   Tue, 13 Jun 2017 21:28:45 +0200

backend /refund handler skeleton, not in compilation

Diffstat:
A
src/backend/taler-merchant-httpd_refund.c
 | 
164
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 164 insertions(+), 0 deletions(-)
diff --git a/src/backend/taler-merchant-httpd_refund.c b/src/backend/taler-merchant-httpd_refund.c
@@ -0,0 +1,164 @@
+/*
+  This file is part of TALER
+  (C) 2014, 2015, 2016, 2017 INRIA
+
+  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_refund.c
+ * @brief HTTP serving layer mainly intended to communicate with the frontend
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include <jansson.h>
+#include <taler/taler_signatures.h>
+#include <taler/taler_json_lib.h>
+#include "taler-merchant-httpd.h"
+#include "taler-merchant-httpd_parsing.h"
+#include "taler-merchant-httpd_responses.h"
+
+
+/**
+ * Information we keep for individual calls
+ * to requests that parse JSON, but keep no other state.
+ */
+struct TMH_JsonParseContext
+{
+
+  /**
+   * This field MUST be first.
+   * FIXME: Explain why!
+   */
+  struct TM_HandlerContext hc;
+
+  /**
+   * Placeholder for #TMH_PARSE_post_json() to keep its internal state.
+   */
+  void *json_parse_context;
+};
+
+
+/**
+ * Custom cleanup routine for a `struct TMH_JsonParseContext`.
+ *
+ * @param hc the `struct TMH_JsonParseContext` to clean up.
+ */
+static void
+json_parse_cleanup (struct TM_HandlerContext *hc)
+{
+  struct TMH_JsonParseContext *jpc = (struct TMH_JsonParseContext *) hc;
+
+  TMH_PARSE_post_cleanup_callback (jpc->json_parse_context);
+  GNUNET_free (jpc);
+}
+
+
+extern struct MerchantInstance *
+get_instance (struct json_t *json);
+
+
+/**
+ * Handle request for increasing the refund associated with
+ * a contract.
+ *
+ * @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_refund_increase (struct TMH_RequestHandler *rh,
+                            struct MHD_Connection *connection,
+                            void **connection_cls,
+                            const char *upload_data,
+                            size_t *upload_data_size)
+{
+  int res;
+  struct TMH_JsonParseContext *ctx;
+  json_t *root;
+
+  if (NULL == *connection_cls)
+  {
+    ctx = GNUNET_new (struct TMH_JsonParseContext);
+    ctx->hc.cc = &json_parse_cleanup;
+    *connection_cls = ctx;
+  }
+  else
+  {
+    ctx = *connection_cls;
+  }
+
+  res = TMH_PARSE_post_json (connection,
+                             &ctx->json_parse_context,
+                             upload_data,
+                             upload_data_size,
+                             &root);
+  if (GNUNET_SYSERR == res)
+    return MHD_NO;
+  /* the POST's body has to be further fetched */
+  if ((GNUNET_NO == res) || (NULL == root))
+    return MHD_YES;
+
+  /* FIXME: TBD */
+
+  json_decref (root);
+  return res;
+}
+
+
+/**
+ * Return refund situation about a contract.
+ *
+ * @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_refund_lookup (struct TMH_RequestHandler *rh,
+                          struct MHD_Connection *connection,
+                          void **connection_cls,
+                          const char *upload_data,
+                          size_t *upload_data_size)
+{
+  const char *order_id;
+  const char *instance;
+  int res;
+  struct MerchantInstance *mi;
+
+  instance = MHD_lookup_connection_value (connection,
+                                          MHD_GET_ARGUMENT_KIND,
+                                          "instance");
+  if (NULL == instance)
+    return TMH_RESPONSE_reply_arg_missing (connection,
+					   TALER_EC_PARAMETER_MISSING,
+                                           "instance");
+
+  mi = TMH_lookup_instance (instance);
+  GNUNET_assert (NULL != mi);
+
+  order_id = MHD_lookup_connection_value (connection,
+                                          MHD_GET_ARGUMENT_KIND,
+                                          "order_id");
+  if (NULL == order_id)
+    return TMH_RESPONSE_reply_arg_missing (connection,
+					   TALER_EC_PARAMETER_MISSING,
+                                           "order_id");
+  /* FIXME: TBD */
+  return res;
+}
+
+
+/* end of taler-merchant-httpd_refund.c */