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/*
This file is part of TALER
(C) 2014-2020 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 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 taler-merchant-httpd_private-get-transfers.c
* @brief implement API for obtaining a list of wire transfers
* @author Marcello Stanisci
* @author Christian Grothoff
*/
#include "platform.h"
#include <jansson.h>
#include <taler/taler_json_lib.h>
#include "taler-merchant-httpd_private-get-transfers.h"
/**
* Function called with information about a wire transfer.
* Generate a response (array entry) based on the given arguments.
*
* @param cls closure with a `json_t *` array to build up the response
* @param credit_amount how much was wired to the merchant (minus fees)
* @param wtid wire transfer identifier
* @param payto_uri target account that received the wire transfer
* @param exchange_url base URL of the exchange that made the wire transfer
* @param transfer_serial_id serial number identifying the transfer in the backend
* @param execution_time when did the exchange make the transfer, #GNUNET_TIME_UNIT_FOREVER_ABS
* if it did not yet happen
* @param verified YES if we checked the exchange's answer and liked it,
* NO if we checked the exchange's answer and it is problematic,
* ALL if we did not yet check
* @param confirmed true if the merchant acknowledged the wire transfer reception
*/
static void
transfer_cb (void *cls,
const struct TALER_Amount *credit_amount,
const struct TALER_WireTransferIdentifierRawP *wtid,
const char *payto_uri,
const char *exchange_url,
uint64_t transfer_serial_id,
struct GNUNET_TIME_Absolute execution_time,
bool verified,
bool confirmed)
{
json_t *ja = cls;
json_t *r;
r = json_pack ("{s:o, s:o, s:s, s:s, s:I}",
"credit_amount", TALER_JSON_from_amount (credit_amount),
"wtid", GNUNET_JSON_from_data_auto (wtid),
"payto_uri", payto_uri,
"exchange_url", exchange_url,
"transfer_serial_id", (json_int_t) transfer_serial_id);
GNUNET_assert (NULL != r);
if (GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us !=
execution_time.abs_value_us)
GNUNET_assert (0 ==
json_object_set_new (
r,
"execution_time",
GNUNET_JSON_from_time_abs (execution_time)));
GNUNET_assert (0 ==
json_object_set_new (
r,
"verified",
json_boolean (verified ? 1 : 0)));
GNUNET_assert (0 ==
json_object_set_new (
r,
"confirmed",
json_boolean (confirmed ? 1 : 0)));
GNUNET_assert (0 ==
json_array_append_new (ja,
r));
}
/**
* Manages a GET /private/transfers call.
*
* @param rh context of the handler
* @param connection the MHD connection to handle
* @param[in,out] hc context with further information about the request
* @return MHD result code
*/
MHD_RESULT
TMH_private_get_transfers (const struct TMH_RequestHandler *rh,
struct MHD_Connection *connection,
struct TMH_HandlerContext *hc)
{
const char *payto_uri;
struct GNUNET_TIME_Absolute before = GNUNET_TIME_UNIT_FOREVER_ABS;
struct GNUNET_TIME_Absolute after = GNUNET_TIME_UNIT_ZERO_ABS;
int64_t limit = -20;
uint64_t offset;
enum TALER_EXCHANGE_YesNoAll verified;
payto_uri = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"payto_uri");
{
const char *before_s;
before_s = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"before");
if ( (NULL != before_s) &&
(GNUNET_OK !=
GNUNET_STRINGS_fancy_time_to_absolute (before_s,
&before)) )
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"before");
}
{
const char *after_s;
after_s = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"after");
if ( (NULL != after_s) &&
(GNUNET_OK !=
GNUNET_STRINGS_fancy_time_to_absolute (after_s,
&after)) )
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"after");
}
{
const char *limit_s;
limit_s = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"limit");
if (NULL != limit_s)
{
char dummy[2];
long long l;
if (1 !=
sscanf (limit_s,
"%lld%1s",
&l,
dummy))
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"limit");
limit = (int64_t) l;
}
}
{
const char *offset_s;
offset_s = MHD_lookup_connection_value (connection,
MHD_GET_ARGUMENT_KIND,
"offset");
if (NULL != offset_s)
{
char dummy[2];
unsigned long long o;
if (1 !=
sscanf (offset_s,
"%llu%1s",
&o,
dummy))
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"offset");
offset = (uint64_t) o;
}
else
{
if (limit < 0)
offset = INT64_MAX;
else
offset = 0;
}
}
if (! (TALER_arg_to_yna (connection,
"verified",
TALER_EXCHANGE_YNA_ALL,
&verified)) )
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_BAD_REQUEST,
TALER_EC_GENERIC_PARAMETER_MALFORMED,
"verified");
TMH_db->preflight (TMH_db->cls);
{
json_t *ja;
enum GNUNET_DB_QueryStatus qs;
ja = json_array ();
GNUNET_assert (NULL != ja);
qs = TMH_db->lookup_transfers (TMH_db->cls,
hc->instance->settings.id,
payto_uri,
before,
after,
limit,
offset,
verified,
&transfer_cb,
ja);
if (0 > qs)
{
/* Simple select queries should not cause serialization issues */
GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR != qs);
/* Always report on hard error as well to enable diagnostics */
GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR == qs);
return TALER_MHD_reply_with_error (connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_GENERIC_DB_FETCH_FAILED,
"transfers");
}
return TALER_MHD_reply_json_pack (connection,
MHD_HTTP_OK,
"{s:o}",
"transfers", ja);
}
}
/* end of taler-merchant-httpd_track-transfer.c */
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