741 lines
21 KiB
C
741 lines
21 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2017-2020 Taler Systems SA
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* @file taler-bank-transfer.c
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* @brief Execute wire transfer.
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include <gnunet/gnunet_util_lib.h>
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#include <gnunet/gnunet_json_lib.h>
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#include <jansson.h>
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#include "taler_bank_service.h"
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/**
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* If set to #GNUNET_YES, then we'll ask the bank for a list
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* of incoming transactions from the account.
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*/
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static int incoming_history;
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/**
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* If set to #GNUNET_YES, then we'll ask the bank for a list
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* of outgoing transactions from the account.
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*/
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static int outgoing_history;
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/**
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* Amount to transfer.
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*/
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static struct TALER_Amount amount;
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/**
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* Credit account payto://-URI.
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*/
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static char *credit_account;
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/**
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* Debit account payto://-URI.
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*/
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static char *debit_account;
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/**
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* Wire transfer subject.
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*/
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static char *subject;
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/**
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* Which config section has the credentials to access the bank.
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*/
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static char *account_section;
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/**
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* Starting row.
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*/
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static unsigned long long start_row;
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/**
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* Authentication data.
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*/
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static struct TALER_BANK_AuthenticationData auth;
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/**
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* Return value from main().
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*/
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static int global_ret = 1;
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/**
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* Main execution context for the main loop.
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*/
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static struct GNUNET_CURL_Context *ctx;
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/**
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* Handle to ongoing credit history operation.
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*/
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static struct TALER_BANK_CreditHistoryHandle *chh;
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/**
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* Handle to ongoing debit history operation.
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*/
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static struct TALER_BANK_DebitHistoryHandle *dhh;
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/**
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* Handle for executing the wire transfer.
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*/
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static struct TALER_BANK_TransferHandle *eh;
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/**
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* Handle to access the exchange.
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*/
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static struct TALER_BANK_AdminAddIncomingHandle *op;
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/**
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* Context for running the CURL event loop.
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*/
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static struct GNUNET_CURL_RescheduleContext *rc;
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/**
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* Function run when the test terminates (good or bad).
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* Cleans up our state.
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*
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* @param cls NULL
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*/
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static void
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do_shutdown (void *cls)
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{
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(void) cls;
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if (NULL != op)
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{
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TALER_BANK_admin_add_incoming_cancel (op);
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op = NULL;
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}
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if (NULL != chh)
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{
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TALER_BANK_credit_history_cancel (chh);
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chh = NULL;
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}
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if (NULL != dhh)
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{
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TALER_BANK_debit_history_cancel (dhh);
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dhh = NULL;
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}
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if (NULL != eh)
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{
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TALER_BANK_transfer_cancel (eh);
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eh = NULL;
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}
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if (NULL != ctx)
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{
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GNUNET_CURL_fini (ctx);
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ctx = NULL;
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}
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if (NULL != rc)
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{
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GNUNET_CURL_gnunet_rc_destroy (rc);
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rc = NULL;
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}
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TALER_BANK_auth_free (&auth);
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}
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/**
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* Callback used to process ONE entry in the transaction
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* history returned by the bank.
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*
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* @param cls closure
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* @param http_status HTTP status code from server
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* @param ec taler error code
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* @param serial_id identification of the position at
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* which we are returning data
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* @param details details about the wire transfer
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* @param json original full response from server
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* @return #GNUNET_OK to continue, #GNUNET_SYSERR to
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* abort iteration
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*/
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static int
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credit_history_cb (void *cls,
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unsigned int http_status,
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enum TALER_ErrorCode ec,
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uint64_t serial_id,
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const struct TALER_BANK_CreditDetails *details,
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const json_t *json)
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{
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(void) cls;
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if (MHD_HTTP_OK != http_status)
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{
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if ( (MHD_HTTP_NO_CONTENT != http_status) ||
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(TALER_EC_NONE != ec) ||
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(NULL == details) )
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{
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fprintf (stderr,
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"Failed to obtain credit history: %u/%d\n",
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http_status,
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ec);
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if (NULL != json)
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json_dumpf (json,
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stderr,
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JSON_INDENT (2));
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global_ret = 2;
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GNUNET_SCHEDULER_shutdown ();
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return GNUNET_NO;
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}
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fprintf (stdout,
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"End of transactions list.\n");
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global_ret = 0;
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GNUNET_SCHEDULER_shutdown ();
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return GNUNET_NO;
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}
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/* If credit/debit accounts were specified, use as a filter */
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if ( (NULL != credit_account) &&
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(0 != strcasecmp (credit_account,
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details->credit_account_url) ) )
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return GNUNET_OK;
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if ( (NULL != debit_account) &&
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(0 != strcasecmp (debit_account,
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details->debit_account_url) ) )
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return GNUNET_OK;
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fprintf (stdout,
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"%llu: %s->%s (%s) over %s at %s\n",
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(unsigned long long) serial_id,
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details->debit_account_url,
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details->credit_account_url,
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TALER_B2S (&details->reserve_pub),
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TALER_amount2s (&details->amount),
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GNUNET_STRINGS_absolute_time_to_string (details->execution_date));
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return GNUNET_OK;
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}
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/**
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* Ask the bank the list of transactions for the bank account
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* mentioned in the config section given by the user.
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*/
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static void
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execute_credit_history ()
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{
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if (NULL != subject)
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{
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fprintf (stderr,
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"Specifying subject is not supported when inspecting credit history\n");
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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chh = TALER_BANK_credit_history (ctx,
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&auth,
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start_row,
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-10,
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&credit_history_cb,
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NULL);
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if (NULL == chh)
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{
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fprintf (stderr,
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"Could not request the credit transaction history.\n");
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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}
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/**
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* Function with the debit debit transaction history.
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*
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* @param cls closure
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* @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request
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* 0 if the bank's reply is bogus (fails to follow the protocol),
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* #MHD_HTTP_NO_CONTENT if there are no more results; on success the
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* last callback is always of this status (even if `abs(num_results)` were
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* already returned).
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* @param ec detailed error code
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* @param serial_id monotonically increasing counter corresponding to the transaction
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* @param details details about the wire transfer
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* @param json detailed response from the HTTPD, or NULL if reply was not in JSON
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* @return #GNUNET_OK to continue, #GNUNET_SYSERR to abort iteration
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*/
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static int
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debit_history_cb (void *cls,
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unsigned int http_status,
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enum TALER_ErrorCode ec,
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uint64_t serial_id,
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const struct TALER_BANK_DebitDetails *details,
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const json_t *json)
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{
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(void) cls;
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if (MHD_HTTP_OK != http_status)
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{
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if ( (MHD_HTTP_NO_CONTENT != http_status) ||
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(TALER_EC_NONE != ec) ||
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(NULL == details) )
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{
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fprintf (stderr,
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"Failed to obtain debit history: %u/%d\n",
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http_status,
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ec);
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if (NULL != json)
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json_dumpf (json,
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stderr,
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JSON_INDENT (2));
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global_ret = 2;
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GNUNET_SCHEDULER_shutdown ();
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return GNUNET_NO;
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}
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fprintf (stdout,
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"End of transactions list.\n");
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global_ret = 0;
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GNUNET_SCHEDULER_shutdown ();
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return GNUNET_NO;
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}
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/* If credit/debit accounts were specified, use as a filter */
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if ( (NULL != credit_account) &&
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(0 != strcasecmp (credit_account,
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details->credit_account_url) ) )
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return GNUNET_OK;
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if ( (NULL != debit_account) &&
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(0 != strcasecmp (debit_account,
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details->debit_account_url) ) )
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return GNUNET_OK;
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fprintf (stdout,
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"%llu: %s->%s (%s) over %s at %s\n",
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(unsigned long long) serial_id,
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details->debit_account_url,
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details->credit_account_url,
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TALER_B2S (&details->wtid),
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TALER_amount2s (&details->amount),
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GNUNET_STRINGS_absolute_time_to_string (details->execution_date));
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return GNUNET_OK;
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}
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/**
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* Ask the bank the list of transactions for the bank account
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* mentioned in the config section given by the user.
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*/
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static void
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execute_debit_history ()
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{
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if (NULL != subject)
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{
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fprintf (stderr,
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"Specifying subject is not supported when inspecting debit history\n");
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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dhh = TALER_BANK_debit_history (ctx,
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&auth,
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start_row,
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-10,
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&debit_history_cb,
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NULL);
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if (NULL == dhh)
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{
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fprintf (stderr,
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"Could not request the debit transaction history.\n");
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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}
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/**
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* Callback that processes the outcome of a wire transfer
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* execution.
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*
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* @param cls closure
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* @param response_code HTTP status code
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* @param ec taler error code
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* @param row_id unique ID of the wire transfer in the bank's records
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* @param timestamp when did the transaction go into effect
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*/
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static void
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confirmation_cb (void *cls,
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unsigned int response_code,
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enum TALER_ErrorCode ec,
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uint64_t row_id,
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struct GNUNET_TIME_Absolute timestamp)
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{
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(void) cls;
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eh = NULL;
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if (MHD_HTTP_OK != response_code)
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{
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fprintf (stderr,
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"The wire transfer didn't execute correctly (%u/%d).\n",
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response_code,
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ec);
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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fprintf (stdout,
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"Wire transfer #%llu executed successfully at %s.\n",
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(unsigned long long) row_id,
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GNUNET_STRINGS_absolute_time_to_string (timestamp));
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global_ret = 0;
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GNUNET_SCHEDULER_shutdown ();
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}
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/**
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* Ask the bank to execute a wire transfer.
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*/
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static void
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execute_wire_transfer ()
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{
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struct TALER_WireTransferIdentifierRawP wtid;
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void *buf;
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size_t buf_size;
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char *params;
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if (NULL != debit_account)
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{
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fprintf (stderr,
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"Invalid option -C specified, conflicts with -D\n");
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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// See if subject was given as a payto-parameter.
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if (NULL == subject)
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subject = TALER_payto_get_subject (credit_account);
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if (NULL != subject)
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{
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if (GNUNET_OK !=
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GNUNET_STRINGS_string_to_data (subject,
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strlen (subject),
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&wtid,
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sizeof (wtid)))
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{
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fprintf (stderr,
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"Error: wire transfer subject must be a WTID\n");
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return;
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}
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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else
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{
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/* pick one at random */
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GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_NONCE,
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&wtid,
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sizeof (wtid));
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}
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params = strchr (credit_account,
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(unsigned char) '&');
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if (NULL != params)
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*params = '\0';
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TALER_BANK_prepare_transfer (credit_account,
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&amount,
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"http://exchange.example.com/",
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&wtid,
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&buf,
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&buf_size);
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eh = TALER_BANK_transfer (ctx,
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&auth,
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buf,
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buf_size,
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&confirmation_cb,
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NULL);
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if (NULL == eh)
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{
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fprintf (stderr,
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"Could not execute the wire transfer\n");
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GNUNET_SCHEDULER_shutdown ();
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return;
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}
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}
|
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|
|
|
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/**
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* Function called with the result of the operation.
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*
|
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* @param cls closure
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* @param http_status HTTP response code, #MHD_HTTP_OK (200) for successful status request
|
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* 0 if the bank's reply is bogus (fails to follow the protocol)
|
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* @param ec detailed error code
|
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* @param serial_id unique ID of the wire transfer in the bank's records; UINT64_MAX on error
|
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* @param timestamp timestamp when the transaction got settled at the bank.
|
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* @param json detailed response from the HTTPD, or NULL if reply was not in JSON
|
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*/
|
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static void
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res_cb (void *cls,
|
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unsigned int http_status,
|
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enum TALER_ErrorCode ec,
|
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uint64_t serial_id,
|
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struct GNUNET_TIME_Absolute timestamp,
|
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const json_t *json)
|
|
{
|
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(void) cls;
|
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(void) timestamp;
|
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op = NULL;
|
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switch (ec)
|
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{
|
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case TALER_EC_NONE:
|
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global_ret = 0;
|
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fprintf (stdout,
|
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"%llu\n",
|
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(unsigned long long) serial_id);
|
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break;
|
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default:
|
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fprintf (stderr,
|
|
"Operation failed with status code %u/%u\n",
|
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(unsigned int) ec,
|
|
http_status);
|
|
if (NULL != json)
|
|
json_dumpf (json,
|
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stderr,
|
|
JSON_INDENT (2));
|
|
break;
|
|
}
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
}
|
|
|
|
|
|
/**
|
|
* Ask the bank to execute a wire transfer to the exchange.
|
|
*/
|
|
static void
|
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execute_admin_transfer ()
|
|
{
|
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struct TALER_ReservePublicKeyP reserve_pub;
|
|
|
|
if (NULL != subject)
|
|
{
|
|
if (GNUNET_OK !=
|
|
GNUNET_STRINGS_string_to_data (subject,
|
|
strlen (subject),
|
|
&reserve_pub,
|
|
sizeof (reserve_pub)))
|
|
{
|
|
fprintf (stderr,
|
|
"Error: wire transfer subject must be a reserve public key\n");
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* pick one that is kind-of well-formed at random */
|
|
GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_NONCE,
|
|
&reserve_pub,
|
|
sizeof (reserve_pub));
|
|
}
|
|
op = TALER_BANK_admin_add_incoming (ctx,
|
|
&auth,
|
|
&reserve_pub,
|
|
&amount,
|
|
credit_account,
|
|
&res_cb,
|
|
NULL);
|
|
if (NULL == op)
|
|
{
|
|
fprintf (stderr,
|
|
"Could not execute the wire transfer to the exchange\n");
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Main function that will be run.
|
|
*
|
|
* @param cls closure
|
|
* @param args remaining command-line arguments
|
|
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
|
|
* @param cfg configuration
|
|
*/
|
|
static void
|
|
run (void *cls,
|
|
char *const *args,
|
|
const char *cfgfile,
|
|
const struct GNUNET_CONFIGURATION_Handle *cfg)
|
|
{
|
|
(void) cls;
|
|
(void) args;
|
|
(void) cfgfile;
|
|
(void) cfg;
|
|
|
|
GNUNET_SCHEDULER_add_shutdown (&do_shutdown,
|
|
NULL);
|
|
ctx = GNUNET_CURL_init (&GNUNET_CURL_gnunet_scheduler_reschedule,
|
|
&rc);
|
|
GNUNET_assert (NULL != ctx);
|
|
rc = GNUNET_CURL_gnunet_rc_create (ctx);
|
|
if (NULL != account_section)
|
|
{
|
|
if ( (NULL != auth.wire_gateway_url) ||
|
|
(NULL != auth.details.basic.username) ||
|
|
(NULL != auth.details.basic.password) )
|
|
{
|
|
fprintf (stderr,
|
|
"Conflicting authentication options provided. Please only use one method.\n");
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
return;
|
|
}
|
|
if (GNUNET_OK !=
|
|
TALER_BANK_auth_parse_cfg (cfg,
|
|
account_section,
|
|
&auth))
|
|
{
|
|
fprintf (stderr,
|
|
"Authentication information not found in configuration section `%s'\n",
|
|
account_section);
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ( (NULL != auth.wire_gateway_url) &&
|
|
(NULL != auth.details.basic.username) &&
|
|
(NULL != auth.details.basic.password) )
|
|
{
|
|
auth.method = TALER_BANK_AUTH_BASIC;
|
|
}
|
|
else if (NULL == auth.wire_gateway_url)
|
|
{
|
|
fprintf (stderr,
|
|
"No account specified (use -b or -s options).\n");
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
return;
|
|
}
|
|
}
|
|
if ( (GNUNET_YES == incoming_history) &&
|
|
(GNUNET_YES == incoming_history) )
|
|
{
|
|
fprintf (stderr,
|
|
"Please specify only -i or -o, but not both.\n");
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
return;
|
|
}
|
|
if (GNUNET_YES == incoming_history)
|
|
{
|
|
execute_credit_history ();
|
|
return;
|
|
}
|
|
if (GNUNET_YES == outgoing_history)
|
|
{
|
|
execute_debit_history ();
|
|
return;
|
|
}
|
|
if (NULL != credit_account)
|
|
{
|
|
execute_wire_transfer ();
|
|
return;
|
|
}
|
|
if (NULL != debit_account)
|
|
{
|
|
execute_admin_transfer ();
|
|
return;
|
|
}
|
|
|
|
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
|
|
"No operation specified.\n");
|
|
global_ret = 0;
|
|
GNUNET_SCHEDULER_shutdown ();
|
|
}
|
|
|
|
|
|
/**
|
|
* The main function of the taler-bank-transfer tool
|
|
*
|
|
* @param argc number of arguments from the command line
|
|
* @param argv command line arguments
|
|
* @return 0 ok, 1 on error
|
|
*/
|
|
int
|
|
main (int argc,
|
|
char *const *argv)
|
|
{
|
|
const struct GNUNET_GETOPT_CommandLineOption options[] = {
|
|
TALER_getopt_get_amount ('a',
|
|
"amount",
|
|
"VALUE",
|
|
"value to transfer",
|
|
&amount),
|
|
GNUNET_GETOPT_option_string ('b',
|
|
"bank",
|
|
"URL",
|
|
"Wire gateway URL to use to talk to the bank",
|
|
&auth.wire_gateway_url),
|
|
GNUNET_GETOPT_option_help ("Deposit funds into a Taler reserve"),
|
|
GNUNET_GETOPT_option_string ('C',
|
|
"credit",
|
|
"ACCOUNT",
|
|
"payto URI of the bank account to credit (when making outgoing transfers)",
|
|
&credit_account),
|
|
GNUNET_GETOPT_option_string ('D',
|
|
"debit",
|
|
"PAYTO-URL",
|
|
"payto URI of the bank account to debit (when making incoming transfers)",
|
|
&debit_account),
|
|
GNUNET_GETOPT_option_flag ('i',
|
|
"credit-history",
|
|
"Ask to get a list of 10 incoming transactions.",
|
|
&incoming_history),
|
|
GNUNET_GETOPT_option_flag ('o',
|
|
"debit-history",
|
|
"Ask to get a list of 10 outgoing transactions.",
|
|
&outgoing_history),
|
|
GNUNET_GETOPT_option_string ('p',
|
|
"pass",
|
|
"PASSPHRASE",
|
|
"passphrase to use for authentication",
|
|
&auth.details.basic.password),
|
|
GNUNET_GETOPT_option_string ('s',
|
|
"section",
|
|
"ACCOUNT-SECTION",
|
|
"Which config section has the credentials to access the bank. Conflicts with -b -u and -p options.\n",
|
|
&account_section),
|
|
GNUNET_GETOPT_option_string ('S',
|
|
"subject",
|
|
"SUBJECT",
|
|
"specifies the wire transfer subject",
|
|
&subject),
|
|
GNUNET_GETOPT_option_string ('u',
|
|
"user",
|
|
"USERNAME",
|
|
"username to use for authentication",
|
|
&auth.details.basic.username),
|
|
GNUNET_GETOPT_option_ulong ('w',
|
|
"since-when",
|
|
"ROW",
|
|
"When asking the bank for transactions history, this option commands that all the results should have IDs settled after SW. If not given, then the 10 youngest transactions are returned.",
|
|
&start_row),
|
|
GNUNET_GETOPT_OPTION_END
|
|
};
|
|
|
|
GNUNET_assert (GNUNET_OK ==
|
|
GNUNET_log_setup ("taler-bank-transfer",
|
|
"WARNING",
|
|
NULL));
|
|
global_ret = 1;
|
|
if (GNUNET_OK !=
|
|
GNUNET_PROGRAM_run (argc, argv,
|
|
"taler-bank-transfer",
|
|
"Client tool of the Taler Wire Gateway",
|
|
options,
|
|
&run, NULL))
|
|
return 1;
|
|
return global_ret;
|
|
}
|
|
|
|
|
|
/* end taler-bank-transfer.c */
|