From b38b51d5e8b71f2fcf30dc6aaef82c1fbcede5f8 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 17 Oct 2021 15:58:23 +0200
Subject: implement /kyc-check, add skeleton for /kyc-proof

---
 src/exchange/taler-exchange-httpd_kyc-proof.c | 99 +++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 src/exchange/taler-exchange-httpd_kyc-proof.c

(limited to 'src/exchange/taler-exchange-httpd_kyc-proof.c')

diff --git a/src/exchange/taler-exchange-httpd_kyc-proof.c b/src/exchange/taler-exchange-httpd_kyc-proof.c
new file mode 100644
index 000000000..cb3f00dde
--- /dev/null
+++ b/src/exchange/taler-exchange-httpd_kyc-proof.c
@@ -0,0 +1,99 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2021 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 Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file taler-exchange-httpd_kyc-proof.c
+ * @brief Handle request for proof for KYC check.
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_json_lib.h>
+#include <jansson.h>
+#include <microhttpd.h>
+#include <pthread.h>
+#include "taler_json_lib.h"
+#include "taler_mhd_lib.h"
+#include "taler-exchange-httpd_kyc-proof.h"
+#include "taler-exchange-httpd_responses.h"
+
+
+/**
+ * Context for the proof.
+ */
+struct KycProofContext
+{
+
+};
+
+
+/**
+ * Function implementing database transaction to check proof's KYC status.
+ * Runs the transaction logic; IF it returns a non-error code, the transaction
+ * logic MUST NOT queue a MHD response.  IF it returns an hard error, the
+ * transaction logic MUST queue a MHD response and set @a mhd_ret.  IF it
+ * returns the soft error code, the function MAY be called again to retry and
+ * MUST not queue a MHD response.
+ *
+ * @param cls closure with a `struct KycProofContext *`
+ * @param connection MHD proof which triggered the transaction
+ * @param[out] mhd_ret set to MHD response status for @a connection,
+ *             if transaction failed (!)
+ * @return transaction status
+ */
+static enum GNUNET_DB_QueryStatus
+proof_kyc_check (void *cls,
+                 struct MHD_Connection *connection,
+                 MHD_RESULT *mhd_ret)
+{
+  struct KycProofContext *kpc = cls;
+
+  (void) kpc; // FIXME: do work here!
+  return -2;
+}
+
+
+MHD_RESULT
+TEH_handler_kyc_proof (
+  struct MHD_Connection *connection,
+  ...)
+{
+  struct KycProofContext kpc;
+  MHD_RESULT res;
+  enum GNUNET_GenericReturnValue ret;
+
+  if (1 || (TEH_KYC_NONE == TEH_kyc_config.mode))
+    return TALER_MHD_reply_static (
+      connection,
+      MHD_HTTP_NO_CONTENT,
+      NULL,
+      NULL,
+      0);
+  ret = TEH_DB_run_transaction (connection,
+                                "check proof kyc",
+                                &res,
+                                &proof_kyc_check,
+                                &kpc);
+  if (GNUNET_SYSERR == ret)
+    return res;
+  return TALER_MHD_REPLY_JSON_PACK (
+    connection,
+    MHD_HTTP_OK,
+    GNUNET_JSON_pack_uint64 ("42",
+                             42));
+}
+
+
+/* end of taler-exchange-httpd_kyc-proof.c */
-- 
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