split tracking into track_transfer.c and track_transaction.c

1 files changed, 126 insertions, 0 deletions

diff --git a/src/exchange/taler-exchange-httpd_track_transaction.c b/src/exchange/taler-exchange-httpd_track_transaction.c
new file mode 100644
index 000000000..9b2aaeca5
--- /dev/null
+++ b/src/exchange/taler-exchange-httpd_track_transaction.c
@@ -0,0 +1,126 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014-2017 GNUnet e.V.
+
+  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_track_transaction.c
+ * @brief Handle wire transfer tracking-related requests
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <jansson.h>
+#include <microhttpd.h>
+#include <pthread.h>
+#include "taler_signatures.h"
+#include "taler-exchange-httpd_parsing.h"
+#include "taler-exchange-httpd_track_transaction.h"
+#include "taler-exchange-httpd_responses.h"
+
+
+/**
+ * Check the merchant signature, and if it is valid,
+ * return the wire transfer identifier.
+ *
+ * @param connection the MHD connection to handle
+ * @param tps signed request to execute
+ * @param merchant_pub public key from the merchant
+ * @param merchant_sig signature from the merchant (to be checked)
+ * @return MHD result code
+ */
+static int
+check_and_handle_track_transaction_request (struct MHD_Connection *connection,
+                                            const struct TALER_DepositTrackPS *tps,
+                                            struct TALER_MerchantPublicKeyP *merchant_pub,
+                                            struct TALER_MerchantSignatureP *merchant_sig)
+{
+  if (GNUNET_OK !=
+      GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MERCHANT_TRACK_TRANSACTION,
+				  &tps->purpose,
+				  &merchant_sig->eddsa_sig,
+				  &merchant_pub->eddsa_pub))
+  {
+    GNUNET_break_op (0);
+    return TEH_RESPONSE_reply_signature_invalid (connection,
+						 TALER_EC_TRACK_TRANSACTION_MERCHANT_SIGNATURE_INVALID,
+						 "merchant_sig");
+  }
+  return TEH_DB_execute_track_transaction (connection,
+                                           &tps->h_contract_terms,
+                                           &tps->h_wire,
+                                           &tps->coin_pub,
+                                           merchant_pub);
+}
+
+
+/**
+ * Handle a "/track/transaction" 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
+TEH_TRACKING_handler_track_transaction (struct TEH_RequestHandler *rh,
+                                        struct MHD_Connection *connection,
+                                        void **connection_cls,
+                                        const char *upload_data,
+                                        size_t *upload_data_size)
+{
+  int res;
+  json_t *json;
+  struct TALER_DepositTrackPS tps;
+  struct TALER_MerchantSignatureP merchant_sig;
+  struct GNUNET_JSON_Specification spec[] = {
+    GNUNET_JSON_spec_fixed_auto ("H_wire", &tps.h_wire),
+    GNUNET_JSON_spec_fixed_auto ("h_contract_terms", &tps.h_contract_terms),
+    GNUNET_JSON_spec_fixed_auto ("coin_pub", &tps.coin_pub),
+    GNUNET_JSON_spec_fixed_auto ("merchant_pub", &tps.merchant),
+    GNUNET_JSON_spec_fixed_auto ("merchant_sig", &merchant_sig),
+    GNUNET_JSON_spec_end ()
+  };
+
+  res = TEH_PARSE_post_json (connection,
+                             connection_cls,
+                             upload_data,
+                             upload_data_size,
+                             &json);
+  if (GNUNET_SYSERR == res)
+    return MHD_NO;
+  if ( (GNUNET_NO == res) || (NULL == json) )
+    return MHD_YES;
+  res = TEH_PARSE_json_data (connection,
+                             json,
+                             spec);
+  if (GNUNET_OK != res)
+  {
+    json_decref (json);
+    return (GNUNET_NO == res) ? MHD_YES : MHD_NO;
+  }
+  tps.purpose.size = htonl (sizeof (struct TALER_DepositTrackPS));
+  tps.purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_TRACK_TRANSACTION);
+  res = check_and_handle_track_transaction_request (connection,
+                                                    &tps,
+                                                    &tps.merchant,
+                                                    &merchant_sig);
+  GNUNET_JSON_parse_free (spec);
+  json_decref (json);
+  return res;
+}
+
+
+/* end of taler-exchange-httpd_track_transaction.c */