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-rw-r--r--src/exchange-lib/testing_api_cmd_refund.c295
1 files changed, 295 insertions, 0 deletions
diff --git a/src/exchange-lib/testing_api_cmd_refund.c b/src/exchange-lib/testing_api_cmd_refund.c
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+++ b/src/exchange-lib/testing_api_cmd_refund.c
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+/*
+ This file is part of TALER
+ Copyright (C) 2014-2018 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 exchange/testing_api_cmd_refund.c
+ * @brief Implement the /refund test command, plus other
+ * corollary commands (?).
+ * @author Marcello Stanisci
+ */
+
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_testing_lib.h"
+
+struct RefundState
+{
+ /**
+ * Expected HTTP response code.
+ */
+ unsigned int expected_response_code;
+
+ /**
+ * Amount to be refunded.
+ */
+ const char *refund_amount;
+
+ /**
+ * Expected refund fee.
+ */
+ const char *refund_fee;
+
+ /**
+ * Reference to any command that can provide a coin to refund.
+ */
+ const char *coin_reference;
+
+ /**
+ * Refund transaction identifier. Left un-initialized in the
+ * old test-suite. What's the best way to init it?
+ */
+ uint64_t refund_transaction_id;
+
+ /**
+ * Connection to the exchange.
+ */
+ struct TALER_EXCHANGE_Handle *exchange;
+
+ /**
+ * Handle to the refund operation.
+ */
+ struct TALER_EXCHANGE_RefundHandle *rh;
+
+ /**
+ * Interpreter state.
+ */
+ struct TALER_TESTING_Interpreter *is;
+};
+
+
+/**
+ * Check the result for the refund request.
+ *
+ * @param cls closure
+ * @param http_status HTTP response code, #MHD_HTTP_OK (200) for
+ * successful deposit; 0 if the exchange's reply is bogus
+ * (fails to follow the protocol).
+ * @param ec taler-specific error code, #TALER_EC_NONE on success
+ * @param exchange_pub public key the exchange used for signing @a
+ * obj
+ * @param obj the received JSON reply, should be kept as proof
+ * (and, in particular, be forwarded to the customer)
+ */
+static void
+refund_cb (void *cls,
+ unsigned int http_status,
+ enum TALER_ErrorCode ec,
+ const struct TALER_ExchangePublicKeyP *exchange_pub,
+ const json_t *obj)
+{
+
+ struct RefundState *rs = cls;
+ struct TALER_TESTING_Command *refund_cmd;
+
+ refund_cmd = &rs->is->commands[rs->is->ip];
+ rs->rh = NULL;
+ if (rs->expected_response_code != http_status)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unexpected response code %u to command %s\n",
+ http_status,
+ refund_cmd->label);
+ json_dumpf (obj, stderr, 0);
+ TALER_TESTING_interpreter_fail (rs->is);
+ return;
+ }
+
+ switch (http_status)
+ {
+ case MHD_HTTP_OK:
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Good /refund status code\n");
+ break;
+ default:
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Unmanaged HTTP status code: %u, command: %s\n",
+ http_status, refund_cmd->label);
+ }
+
+ TALER_TESTING_interpreter_next (rs->is);
+}
+
+/**
+ * Run the command.
+ *
+ * @param cls closure, typically a #struct WireState.
+ * @param cmd the command to execute, a /wire one.
+ * @param i the interpreter state.
+ */
+void
+refund_run (void *cls,
+ const struct TALER_TESTING_Command *cmd,
+ struct TALER_TESTING_Interpreter *is)
+{
+ struct RefundState *rs = cls;
+ struct TALER_CoinSpendPrivateKeyP *coin_priv;
+ struct TALER_CoinSpendPublicKeyP coin;
+ const char *contract_terms;
+ struct GNUNET_HashCode h_contract_terms;
+ json_t *j_contract_terms;
+ struct TALER_Amount refund_fee;
+ struct TALER_Amount refund_amount;
+ const struct GNUNET_CRYPTO_EddsaPrivateKey *merchant_priv;
+ const struct TALER_TESTING_Command *coin_cmd;
+
+ rs->exchange = is->exchange;
+ rs->is = is;
+
+ if (GNUNET_OK !=
+ TALER_string_to_amount (rs->refund_amount,
+ &refund_amount))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to parse amount `%s' at %u/%s\n",
+ rs->refund_amount,
+ is->ip,
+ cmd->label);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+ if (GNUNET_OK !=
+ TALER_string_to_amount (rs->refund_fee,
+ &refund_fee))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Failed to parse amount `%s' at %u/%s\n",
+ rs->refund_fee,
+ is->ip,
+ cmd->label);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+
+ coin_cmd = TALER_TESTING_interpreter_lookup_command
+ (is, rs->coin_reference);
+
+ if (NULL == coin_cmd)
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+
+ if (GNUNET_OK != TALER_TESTING_get_trait_contract_terms
+ (coin_cmd, 0, &contract_terms))
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+
+ j_contract_terms = json_loads
+ (contract_terms, JSON_REJECT_DUPLICATES, NULL);
+
+ /* Very unlikely to fail */
+ GNUNET_assert (NULL != j_contract_terms);
+ GNUNET_assert (GNUNET_OK == TALER_JSON_hash
+ (j_contract_terms, &h_contract_terms));
+
+ json_decref (j_contract_terms);
+
+ /* Hunting for a coin .. */
+ if (GNUNET_OK != TALER_TESTING_get_trait_coin_priv
+ (coin_cmd, 0, &coin_priv))
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+
+ GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv,
+ &coin.eddsa_pub);
+ if (GNUNET_OK != TALER_TESTING_get_trait_peer_key
+ (coin_cmd, 0, &merchant_priv))
+ {
+ GNUNET_break (0);
+ TALER_TESTING_interpreter_fail (is);
+ return;
+ }
+
+ rs->rh = TALER_EXCHANGE_refund
+ (rs->exchange, &refund_amount, &refund_fee, &h_contract_terms,
+ &coin, rs->refund_transaction_id,
+ (const struct TALER_MerchantPrivateKeyP *) merchant_priv,
+ &refund_cb, rs);
+
+ GNUNET_assert (NULL != rs->rh);
+}
+
+
+/**
+ * Cleanup the state.
+ *
+ * @param cls closure, typically a #struct WireState.
+ * @param cmd the command which is being cleaned up.
+ */
+void
+refund_cleanup (void *cls,
+ const struct TALER_TESTING_Command *cmd)
+{
+ struct RefundState *rs = cls;
+
+ if (NULL != rs->rh)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Command %u (%s) did not complete\n",
+ rs->is->ip,
+ cmd->label);
+ TALER_EXCHANGE_refund_cancel (rs->rh);
+ rs->rh = NULL;
+ }
+ GNUNET_free (rs);
+}
+
+/**
+ * Create a /refund test command.
+ *
+ * @param label command label
+ * @param expected_response_code expected HTTP status code
+ * @param refund_amount the amount to ask a refund for
+ * @param refund_fee expected refund fee
+ * @param coin_reference reference to a command that can
+ * provide a coin to be refunded.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_refund (const char *label,
+ unsigned int expected_response_code,
+ const char *refund_amount,
+ const char *refund_fee,
+ const char *coin_reference)
+{
+ struct RefundState *rs;
+ struct TALER_TESTING_Command cmd;
+
+ rs = GNUNET_new (struct RefundState);
+
+ rs->expected_response_code = expected_response_code;
+ rs->refund_amount = refund_amount;
+ rs->refund_fee = refund_fee;
+ rs->coin_reference = coin_reference;
+
+ cmd.cls = rs;
+ cmd.label = label;
+ cmd.run = &refund_run;
+ cmd.cleanup = &refund_cleanup;
+
+ return cmd;
+}
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