/*
This file is part of TALER
Copyright (C) 2015--2020 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
*/
/**
* @file bank-lib/bank_api_admin.c
* @brief Implementation of the /admin/ requests of the bank's HTTP API
* @author Christian Grothoff
*/
#include "platform.h"
#include "bank_api_common.h"
#include /* just for HTTP status codes */
#include "taler_signatures.h"
#include "taler_curl_lib.h"
/**
* @brief An admin/add-incoming Handle
*/
struct TALER_BANK_AdminAddIncomingHandle
{
/**
* The url for this request.
*/
char *request_url;
/**
* POST context.
*/
struct TEAH_PostContext post_ctx;
/**
* Handle for the request.
*/
struct GNUNET_CURL_Job *job;
/**
* Function to call with the result.
*/
TALER_BANK_AdminAddIncomingResultCallback cb;
/**
* Closure for @a cb.
*/
void *cb_cls;
};
/**
* Function called when we're done processing the
* HTTP /admin/add-incoming request.
*
* @param cls the `struct TALER_BANK_AdminAddIncomingHandle`
* @param response_code HTTP response code, 0 on error
* @param response parsed JSON result, NULL on error
*/
static void
handle_admin_add_incoming_finished (void *cls,
long response_code,
const void *response)
{
struct TALER_BANK_AdminAddIncomingHandle *aai = cls;
uint64_t row_id = UINT64_MAX;
struct GNUNET_TIME_Absolute timestamp;
enum TALER_ErrorCode ec;
const json_t *j = response;
aai->job = NULL;
timestamp = GNUNET_TIME_UNIT_FOREVER_ABS;
switch (response_code)
{
case 0:
ec = TALER_EC_INVALID_RESPONSE;
break;
case MHD_HTTP_OK:
{
struct GNUNET_JSON_Specification spec[] = {
GNUNET_JSON_spec_uint64 ("row_id",
&row_id),
GNUNET_JSON_spec_absolute_time ("timestamp",
×tamp),
GNUNET_JSON_spec_end ()
};
if (GNUNET_OK !=
GNUNET_JSON_parse (j,
spec,
NULL, NULL))
{
GNUNET_break_op (0);
response_code = 0;
ec = TALER_EC_INVALID_RESPONSE;
break;
}
ec = TALER_EC_NONE;
}
break;
case MHD_HTTP_BAD_REQUEST:
/* This should never happen, either us or the bank is buggy
(or API version conflict); just pass JSON reply to the application */
ec = TALER_JSON_get_error_code (j);
break;
case MHD_HTTP_FORBIDDEN:
/* Access denied */
ec = TALER_JSON_get_error_code (j);
break;
case MHD_HTTP_UNAUTHORIZED:
/* Nothing really to verify, bank says one of the signatures is
invalid; as we checked them, this should never happen, we
should pass the JSON reply to the application */
ec = TALER_JSON_get_error_code (j);
break;
case MHD_HTTP_NOT_FOUND:
/* Nothing really to verify, this should never
happen, we should pass the JSON reply to the application */
ec = TALER_JSON_get_error_code (j);
break;
case MHD_HTTP_INTERNAL_SERVER_ERROR:
/* Server had an internal issue; we should retry, but this API
leaves this to the application */
ec = TALER_JSON_get_error_code (j);
break;
default:
/* unexpected response code */
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Unexpected response code %u\n",
(unsigned int) response_code);
GNUNET_break (0);
ec = TALER_JSON_get_error_code (j);
response_code = 0;
break;
}
aai->cb (aai->cb_cls,
response_code,
ec,
row_id,
timestamp,
j);
TALER_BANK_admin_add_incoming_cancel (aai);
}
/**
* Notify the bank that we have received an incoming transaction
* which fills a reserve. Note that this API is an administrative
* API and thus not accessible to typical bank clients, but only
* to the operators of the bank.
*
* @param ctx curl context for the event loop
* @param account_base_url URL of the bank (money flows into this account)
* @param auth authentication data to send to the bank
* @param reserve_pub wire transfer subject for the transfer
* @param amount amount that was deposited
* @param debit_account account to deposit from (payto URI, but used as 'payfrom')
* @param res_cb the callback to call when the final result for this request is available
* @param res_cb_cls closure for the above callback
* @return NULL
* if the inputs are invalid (i.e. invalid amount).
* In this case, the callback is not called.
*/
struct TALER_BANK_AdminAddIncomingHandle *
TALER_BANK_admin_add_incoming (struct GNUNET_CURL_Context *ctx,
const char *account_base_url,
const struct TALER_BANK_AuthenticationData *auth,
const struct
TALER_ReservePublicKeyP *reserve_pub,
const struct TALER_Amount *amount,
const char *debit_account,
TALER_BANK_AdminAddIncomingResultCallback res_cb,
void *res_cb_cls)
{
struct TALER_BANK_AdminAddIncomingHandle *aai;
json_t *admin_obj;
CURL *eh;
admin_obj = json_pack ("{s:o, s:o, s:s}",
"reserve_pub",
GNUNET_JSON_from_data_auto (reserve_pub),
"amount",
TALER_JSON_from_amount (amount),
"debit_account",
debit_account);
if (NULL == admin_obj)
{
GNUNET_break (0);
return NULL;
}
aai = GNUNET_new (struct TALER_BANK_AdminAddIncomingHandle);
aai->cb = res_cb;
aai->cb_cls = res_cb_cls;
aai->request_url = TALER_BANK_path_to_url_ (account_base_url,
"/admin/add-incoming");
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Requesting administrative transaction at `%s' for reserve %s\n",
aai->request_url,
TALER_B2S (reserve_pub));
aai->post_ctx.headers = curl_slist_append
(aai->post_ctx.headers,
"Content-Type: application/json");
eh = curl_easy_init ();
if ( (GNUNET_OK !=
TALER_BANK_setup_auth_ (eh,
auth)) ||
(CURLE_OK !=
curl_easy_setopt (eh,
CURLOPT_URL,
aai->request_url)) ||
(GNUNET_OK !=
TALER_curl_easy_post (&aai->post_ctx,
eh,
admin_obj)) )
{
GNUNET_break (0);
TALER_BANK_admin_add_incoming_cancel (aai);
curl_easy_cleanup (eh);
json_decref (admin_obj);
return NULL;
}
json_decref (admin_obj);
aai->job = GNUNET_CURL_job_add2 (ctx,
eh,
aai->post_ctx.headers,
&handle_admin_add_incoming_finished,
aai);
return aai;
}
/**
* Cancel an add incoming. This function cannot be used on a request
* handle if a response is already served for it.
*
* @param aai the admin add incoming request handle
*/
void
TALER_BANK_admin_add_incoming_cancel (struct
TALER_BANK_AdminAddIncomingHandle *aai)
{
if (NULL != aai->job)
{
GNUNET_CURL_job_cancel (aai->job);
aai->job = NULL;
}
TALER_curl_easy_post_finished (&aai->post_ctx);
GNUNET_free (aai->request_url);
GNUNET_free (aai);
}
/* end of bank_api_admin.c */