244 lines
7.3 KiB
C
244 lines
7.3 KiB
C
/*
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This file is part of TALER
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Copyright (C) 2015, 2016 GNUnet e.V.
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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, If not, see
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<http://www.gnu.org/licenses/>
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*/
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/**
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* @file bank-lib/bank_api_admin.c
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* @brief Implementation of the /admin/ requests of the bank's HTTP API
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* @author Christian Grothoff
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*/
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#include "platform.h"
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#include <curl/curl.h>
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#include <jansson.h>
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#include <microhttpd.h> /* just for HTTP status codes */
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#include <gnunet/gnunet_util_lib.h>
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#include "taler_bank_service.h"
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#include "bank_api_json.h"
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#include "bank_api_context.h"
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#include "taler_signatures.h"
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/**
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* @brief An admin/add/incoming Handle
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*/
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struct TALER_BANK_AdminAddIncomingHandle
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{
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/**
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* The connection to bank this request handle will use
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*/
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struct TALER_BANK_Context *bank;
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/**
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* The url for this request.
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*/
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char *url;
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/**
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* JSON encoding of the request to POST.
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*/
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char *json_enc;
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/**
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* Handle for the request.
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*/
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struct BAC_Job *job;
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/**
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* HTTP headers for the request.
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*/
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struct curl_slist *headers;
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/**
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* Function to call with the result.
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*/
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TALER_BANK_AdminAddIncomingResultCallback cb;
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/**
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* Closure for @a cb.
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*/
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void *cb_cls;
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/**
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* Download buffer
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*/
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struct BAC_DownloadBuffer db;
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};
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/**
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* Function called when we're done processing the
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* HTTP /admin/add/incoming request.
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*
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* @param cls the `struct TALER_BANK_AdminAddIncomingHandle`
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* @param eh the curl request handle
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*/
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static void
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handle_admin_add_incoming_finished (void *cls,
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CURL *eh)
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{
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struct TALER_BANK_AdminAddIncomingHandle *aai = cls;
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long response_code;
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json_t *json;
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aai->job = NULL;
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json = BAC_download_get_result (&aai->db,
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eh,
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&response_code);
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switch (response_code)
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{
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case 0:
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break;
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case MHD_HTTP_OK:
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break;
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case MHD_HTTP_BAD_REQUEST:
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/* This should never happen, either us or the bank is buggy
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(or API version conflict); just pass JSON reply to the application */
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break;
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case MHD_HTTP_FORBIDDEN:
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/* Access denied */
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break;
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case MHD_HTTP_UNAUTHORIZED:
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/* Nothing really to verify, bank says one of the signatures is
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invalid; as we checked them, this should never happen, we
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should pass the JSON reply to the application */
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break;
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case MHD_HTTP_NOT_FOUND:
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/* Nothing really to verify, this should never
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happen, we should pass the JSON reply to the application */
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break;
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case MHD_HTTP_INTERNAL_SERVER_ERROR:
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/* Server had an internal issue; we should retry, but this API
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leaves this to the application */
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break;
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default:
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/* unexpected response code */
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GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
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"Unexpected response code %u\n",
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response_code);
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GNUNET_break (0);
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response_code = 0;
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break;
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}
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aai->cb (aai->cb_cls,
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response_code);
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json_decref (json);
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TALER_BANK_admin_add_incoming_cancel (aai);
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}
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/**
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* Notify the bank that we have received an incoming transaction
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* which fills a reserve. Note that this API is an administrative
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* API and thus not accessible to typical bank clients, but only
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* to the operators of the bank.
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*
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* @param bank the bank handle; the bank must be ready to operate
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* @param reserve_pub public key of the reserve
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* @param amount amount that was deposited
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* @param execution_date when did we receive the amount
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* @param debit_account_no account number to withdraw from (53 bits at most)
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* @param credit_account_no account number to deposit into (53 bits at most)
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* @param res_cb the callback to call when the final result for this request is available
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* @param res_cb_cls closure for the above callback
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* @return NULL
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* if the inputs are invalid (i.e. invalid amount).
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* In this case, the callback is not called.
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*/
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struct TALER_BANK_AdminAddIncomingHandle *
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TALER_BANK_admin_add_incoming (struct TALER_BANK_Context *bank,
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const struct TALER_WireTransferIdentifierRawP *wtid,
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const struct TALER_Amount *amount,
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uint64_t debit_account_no,
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uint64_t credit_account_no,
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TALER_BANK_AdminAddIncomingResultCallback res_cb,
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void *res_cb_cls)
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{
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struct TALER_BANK_AdminAddIncomingHandle *aai;
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json_t *admin_obj;
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CURL *eh;
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admin_obj = json_pack ("{s:o, s:o,"
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" s:I, s:I}",
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"wtid", TALER_json_from_data (wtid,
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sizeof (*wtid)),
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"amount", TALER_json_from_amount (amount),
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"debit_account", (json_int_t) debit_account_no,
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"credit_account", (json_int_t) credit_account_no);
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aai = GNUNET_new (struct TALER_BANK_AdminAddIncomingHandle);
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aai->bank = bank;
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aai->cb = res_cb;
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aai->cb_cls = res_cb_cls;
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aai->url = BAC_path_to_url (bank, "/admin/add/incoming");
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eh = curl_easy_init ();
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GNUNET_assert (NULL != (aai->json_enc =
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json_dumps (admin_obj,
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JSON_COMPACT)));
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json_decref (admin_obj);
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GNUNET_assert (CURLE_OK ==
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curl_easy_setopt (eh,
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CURLOPT_URL,
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aai->url));
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GNUNET_assert (CURLE_OK ==
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curl_easy_setopt (eh,
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CURLOPT_POSTFIELDS,
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aai->json_enc));
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GNUNET_assert (CURLE_OK ==
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curl_easy_setopt (eh,
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CURLOPT_POSTFIELDSIZE,
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strlen (aai->json_enc)));
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GNUNET_assert (CURLE_OK ==
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curl_easy_setopt (eh,
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CURLOPT_WRITEFUNCTION,
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&BAC_download_cb));
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GNUNET_assert (CURLE_OK ==
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curl_easy_setopt (eh,
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CURLOPT_WRITEDATA,
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&aai->db));
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aai->job = BAC_job_add (bank,
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eh,
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GNUNET_YES,
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&handle_admin_add_incoming_finished,
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aai);
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return aai;
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}
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/**
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* Cancel an add incoming. This function cannot be used on a request
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* handle if a response is already served for it.
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*
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* @param aai the admin add incoming request handle
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*/
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void
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TALER_BANK_admin_add_incoming_cancel (struct TALER_BANK_AdminAddIncomingHandle *aai)
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{
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if (NULL != aai->job)
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{
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BAC_job_cancel (aai->job);
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aai->job = NULL;
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}
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curl_slist_free_all (aai->headers);
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GNUNET_free_non_null (aai->db.buf);
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GNUNET_free (aai->url);
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GNUNET_free (aai->json_enc);
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GNUNET_free (aai);
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}
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/* end of bank_api_admin.c */
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