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authorChristian Grothoff <christian@grothoff.org>2020-02-29 16:42:10 +0100
committerChristian Grothoff <christian@grothoff.org>2020-02-29 16:42:10 +0100
commit0a2b049864c8dae0c53c203d46fca89e0e66849d (patch)
tree3e836be37902320a4a3a099ee62d960198057952 /src/lib/exchange_api_track_transfer.c
parentde9ab28ab9e55597baf2ca32194ec65b441f0f36 (diff)
downloadexchange-0a2b049864c8dae0c53c203d46fca89e0e66849d.tar.gz
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big rename fest related to #6067 API renaming
Diffstat (limited to 'src/lib/exchange_api_track_transfer.c')
-rw-r--r--src/lib/exchange_api_track_transfer.c400
1 files changed, 0 insertions, 400 deletions
diff --git a/src/lib/exchange_api_track_transfer.c b/src/lib/exchange_api_track_transfer.c
deleted file mode 100644
index c5d484d23..000000000
--- a/src/lib/exchange_api_track_transfer.c
+++ /dev/null
@@ -1,400 +0,0 @@
-/*
- This file is part of TALER
- Copyright (C) 2014, 2015, 2016 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 lib/exchange_api_track_transfer.c
- * @brief Implementation of the /track/transfer request of the exchange's HTTP API
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include <jansson.h>
-#include <microhttpd.h> /* just for HTTP status codes */
-#include <gnunet/gnunet_util_lib.h>
-#include <gnunet/gnunet_curl_lib.h>
-#include "taler_exchange_service.h"
-#include "taler_json_lib.h"
-#include "exchange_api_handle.h"
-#include "taler_signatures.h"
-#include "exchange_api_curl_defaults.h"
-
-
-/**
- * @brief A /track/transfer Handle
- */
-struct TALER_EXCHANGE_TransfersGetHandle
-{
-
- /**
- * The connection to exchange this request handle will use
- */
- struct TALER_EXCHANGE_Handle *exchange;
-
- /**
- * The url for this request.
- */
- char *url;
-
- /**
- * Handle for the request.
- */
- struct GNUNET_CURL_Job *job;
-
- /**
- * Function to call with the result.
- */
- TALER_EXCHANGE_TransfersGetCallback cb;
-
- /**
- * Closure for @a cb.
- */
- void *cb_cls;
-
-};
-
-
-/**
- * We got a #MHD_HTTP_OK response for the /track/transfer request.
- * Check that the response is well-formed and if it is, call the
- * callback. If not, return an error code.
- *
- * This code is very similar to
- * merchant_api_track_transfer.c::check_track_transfer_response_ok.
- * Any changes should likely be reflected there as well.
- *
- * @param wdh handle to the operation
- * @param json response we got
- * @return #GNUNET_OK if we are done and all is well,
- * #GNUNET_SYSERR if the response was bogus
- */
-static int
-check_track_transfer_response_ok (struct
- TALER_EXCHANGE_TransfersGetHandle *wdh,
- const json_t *json)
-{
- json_t *details_j;
- struct GNUNET_HashCode h_wire;
- struct GNUNET_TIME_Absolute exec_time;
- struct TALER_Amount total_amount;
- struct TALER_Amount total_expected;
- struct TALER_Amount wire_fee;
- struct TALER_MerchantPublicKeyP merchant_pub;
- unsigned int num_details;
- struct TALER_ExchangePublicKeyP exchange_pub;
- struct TALER_ExchangeSignatureP exchange_sig;
- struct GNUNET_JSON_Specification spec[] = {
- TALER_JSON_spec_amount ("total", &total_amount),
- TALER_JSON_spec_amount ("wire_fee", &wire_fee),
- GNUNET_JSON_spec_fixed_auto ("merchant_pub", &merchant_pub),
- GNUNET_JSON_spec_fixed_auto ("h_wire", &h_wire),
- GNUNET_JSON_spec_absolute_time ("execution_time", &exec_time),
- GNUNET_JSON_spec_json ("deposits", &details_j),
- GNUNET_JSON_spec_fixed_auto ("exchange_sig", &exchange_sig),
- GNUNET_JSON_spec_fixed_auto ("exchange_pub", &exchange_pub),
- GNUNET_JSON_spec_end ()
- };
-
- if (GNUNET_OK !=
- GNUNET_JSON_parse (json,
- spec,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- if (GNUNET_OK !=
- TALER_amount_get_zero (total_amount.currency,
- &total_expected))
- {
- GNUNET_break_op (0);
- return GNUNET_SYSERR;
- }
- num_details = json_array_size (details_j);
- {
- struct TALER_TrackTransferDetails details[num_details];
- unsigned int i;
- struct GNUNET_HashContext *hash_context;
- struct TALER_WireDepositDetailP dd;
- struct TALER_WireDepositDataPS wdp;
-
- hash_context = GNUNET_CRYPTO_hash_context_start ();
- for (i = 0; i<num_details; i++)
- {
- struct TALER_TrackTransferDetails *detail = &details[i];
- struct json_t *detail_j = json_array_get (details_j, i);
- struct GNUNET_JSON_Specification spec_detail[] = {
- GNUNET_JSON_spec_fixed_auto ("h_contract_terms",
- &detail->h_contract_terms),
- GNUNET_JSON_spec_fixed_auto ("coin_pub", &detail->coin_pub),
- TALER_JSON_spec_amount ("deposit_value", &detail->coin_value),
- TALER_JSON_spec_amount ("deposit_fee", &detail->coin_fee),
- GNUNET_JSON_spec_end ()
- };
-
- if (GNUNET_OK !=
- GNUNET_JSON_parse (detail_j,
- spec_detail,
- NULL, NULL))
- {
- GNUNET_break_op (0);
- GNUNET_CRYPTO_hash_context_abort (hash_context);
- GNUNET_JSON_parse_free (spec);
- return GNUNET_SYSERR;
- }
- /* build up big hash for signature checking later */
- dd.h_contract_terms = detail->h_contract_terms;
- dd.execution_time = GNUNET_TIME_absolute_hton (exec_time);
- dd.coin_pub = detail->coin_pub;
- TALER_amount_hton (&dd.deposit_value,
- &detail->coin_value);
- TALER_amount_hton (&dd.deposit_fee,
- &detail->coin_fee);
- if ( (GNUNET_OK !=
- TALER_amount_add (&total_expected,
- &total_expected,
- &detail->coin_value)) ||
- (GNUNET_OK !=
- TALER_amount_subtract (&total_expected,
- &total_expected,
- &detail->coin_fee)) )
- {
- GNUNET_break_op (0);
- GNUNET_CRYPTO_hash_context_abort (hash_context);
- GNUNET_JSON_parse_free (spec);
- return GNUNET_SYSERR;
- }
- GNUNET_CRYPTO_hash_context_read (hash_context,
- &dd,
- sizeof (struct
- TALER_WireDepositDetailP));
- }
- /* Check signature */
- wdp.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_CONFIRM_WIRE_DEPOSIT);
- wdp.purpose.size = htonl (sizeof (struct TALER_WireDepositDataPS));
- TALER_amount_hton (&wdp.total,
- &total_amount);
- TALER_amount_hton (&wdp.wire_fee,
- &wire_fee);
- wdp.merchant_pub = merchant_pub;
- wdp.h_wire = h_wire;
- GNUNET_CRYPTO_hash_context_finish (hash_context,
- &wdp.h_details);
- if (GNUNET_OK !=
- TALER_EXCHANGE_test_signing_key (TALER_EXCHANGE_get_keys (
- wdh->exchange),
- &exchange_pub))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return GNUNET_SYSERR;
- }
- if (GNUNET_OK != GNUNET_CRYPTO_eddsa_verify
- (TALER_SIGNATURE_EXCHANGE_CONFIRM_WIRE_DEPOSIT,
- &wdp.purpose,
- &exchange_sig.eddsa_signature,
- &exchange_pub.eddsa_pub))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return GNUNET_SYSERR;
- }
-
- if (GNUNET_OK !=
- TALER_amount_subtract (&total_expected,
- &total_expected,
- &wire_fee))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return GNUNET_SYSERR;
- }
- if (0 !=
- TALER_amount_cmp (&total_expected,
- &total_amount))
- {
- GNUNET_break_op (0);
- GNUNET_JSON_parse_free (spec);
- return GNUNET_SYSERR;
- }
- wdh->cb (wdh->cb_cls,
- MHD_HTTP_OK,
- TALER_EC_NONE,
- &exchange_pub,
- json,
- &h_wire,
- exec_time,
- &total_amount,
- &wire_fee,
- num_details,
- details);
- }
- GNUNET_JSON_parse_free (spec);
- TALER_EXCHANGE_transfers_get_cancel (wdh);
- return GNUNET_OK;
-}
-
-
-/**
- * Function called when we're done processing the
- * HTTP /track/transfer request.
- *
- * @param cls the `struct TALER_EXCHANGE_TransfersGetHandle`
- * @param response_code HTTP response code, 0 on error
- * @param response parsed JSON result, NULL on error
- */
-static void
-handle_track_transfer_finished (void *cls,
- long response_code,
- const void *response)
-{
- struct TALER_EXCHANGE_TransfersGetHandle *wdh = cls;
- const json_t *j = response;
-
- wdh->job = NULL;
- switch (response_code)
- {
- case 0:
- break;
- case MHD_HTTP_OK:
- if (GNUNET_OK ==
- check_track_transfer_response_ok (wdh,
- j))
- return;
- GNUNET_break_op (0);
- response_code = 0;
- break;
- case MHD_HTTP_BAD_REQUEST:
- /* This should never happen, either us or the exchange is buggy
- (or API version conflict); just pass JSON reply to the application */
- break;
- case MHD_HTTP_FORBIDDEN:
- /* Nothing really to verify, exchange says one of the signatures is
- invalid; as we checked them, this should never happen, we
- should pass the JSON reply to the application */
- break;
- case MHD_HTTP_NOT_FOUND:
- /* Exchange does not know about transaction;
- we should pass the reply to the application */
- break;
- case MHD_HTTP_INTERNAL_SERVER_ERROR:
- /* Server had an internal issue; we should retry, but this API
- leaves this to the application */
- break;
- default:
- /* unexpected response code */
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Unexpected response code %u\n",
- (unsigned int) response_code);
- GNUNET_break (0);
- response_code = 0;
- break;
- }
- wdh->cb (wdh->cb_cls,
- response_code,
- TALER_JSON_get_error_code (j),
- NULL,
- j,
- NULL,
- GNUNET_TIME_UNIT_ZERO_ABS,
- NULL,
- NULL,
- 0, NULL);
- TALER_EXCHANGE_transfers_get_cancel (wdh);
-}
-
-
-/**
- * Query the exchange about which transactions were combined
- * to create a wire transfer.
- *
- * @param exchange exchange to query
- * @param wtid raw wire transfer identifier to get information about
- * @param cb callback to call
- * @param cb_cls closure for @a cb
- * @return handle to cancel operation
- */
-struct TALER_EXCHANGE_TransfersGetHandle *
-TALER_EXCHANGE_transfers_get (struct TALER_EXCHANGE_Handle *exchange,
- const struct
- TALER_WireTransferIdentifierRawP *wtid,
- TALER_EXCHANGE_TransfersGetCallback cb,
- void *cb_cls)
-{
- struct TALER_EXCHANGE_TransfersGetHandle *wdh;
- struct GNUNET_CURL_Context *ctx;
- CURL *eh;
- char arg_str[sizeof (struct TALER_WireTransferIdentifierRawP) * 2 + 32];
-
- if (GNUNET_YES !=
- TEAH_handle_is_ready (exchange))
- {
- GNUNET_break (0);
- return NULL;
- }
-
- wdh = GNUNET_new (struct TALER_EXCHANGE_TransfersGetHandle);
- wdh->exchange = exchange;
- wdh->cb = cb;
- wdh->cb_cls = cb_cls;
-
- {
- char wtid_str[sizeof (struct TALER_WireTransferIdentifierRawP) * 2];
- char *end;
-
- end = GNUNET_STRINGS_data_to_string (wtid,
- sizeof (struct
- TALER_WireTransferIdentifierRawP),
- wtid_str,
- sizeof (wtid_str));
- *end = '\0';
- GNUNET_snprintf (arg_str,
- sizeof (arg_str),
- "/transfers/%s",
- wtid_str);
- }
- wdh->url = TEAH_path_to_url (wdh->exchange,
- arg_str);
- eh = TEL_curl_easy_get (wdh->url);
- ctx = TEAH_handle_to_context (exchange);
- wdh->job = GNUNET_CURL_job_add (ctx,
- eh,
- GNUNET_YES,
- &handle_track_transfer_finished,
- wdh);
- return wdh;
-}
-
-
-/**
- * Cancel wire deposits request. This function cannot be used on a request
- * handle if a response is already served for it.
- *
- * @param wdh the wire deposits request handle
- */
-void
-TALER_EXCHANGE_transfers_get_cancel (struct
- TALER_EXCHANGE_TransfersGetHandle *wdh)
-{
- if (NULL != wdh->job)
- {
- GNUNET_CURL_job_cancel (wdh->job);
- wdh->job = NULL;
- }
- GNUNET_free (wdh->url);
- GNUNET_free (wdh);
-}
-
-
-/* end of exchange_api_wire_deposits.c */