From 941cb8182f052bbd6344ba7daf91f3aa792027bd Mon Sep 17 00:00:00 2001 From: Christian Grothoff Date: Mon, 25 Jan 2016 10:20:40 +0100 Subject: adding first version of thebank-lib --- src/bank-lib/bank_api_admin.c | 240 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 240 insertions(+) create mode 100644 src/bank-lib/bank_api_admin.c (limited to 'src/bank-lib/bank_api_admin.c') diff --git a/src/bank-lib/bank_api_admin.c b/src/bank-lib/bank_api_admin.c new file mode 100644 index 000000000..ed205eebb --- /dev/null +++ b/src/bank-lib/bank_api_admin.c @@ -0,0 +1,240 @@ +/* + This file is part of TALER + Copyright (C) 2015, 2016 GNUnet e.V. + + 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, 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 +#include +#include /* just for HTTP status codes */ +#include +#include "taler_bank_service.h" +#include "bank_api_json.h" +#include "bank_api_context.h" +#include "taler_signatures.h" + + +/** + * @brief An admin/add/incoming Handle + */ +struct TALER_BANK_AdminAddIncomingHandle +{ + + /** + * The connection to bank this request handle will use + */ + struct TALER_BANK_Context *bank; + + /** + * The url for this request. + */ + char *url; + + /** + * JSON encoding of the request to POST. + */ + char *json_enc; + + /** + * Handle for the request. + */ + struct BAC_Job *job; + + /** + * HTTP headers for the request. + */ + struct curl_slist *headers; + + /** + * Function to call with the result. + */ + TALER_BANK_AdminAddIncomingResultCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Download buffer + */ + struct BAC_DownloadBuffer db; + +}; + + +/** + * Function called when we're done processing the + * HTTP /admin/add/incoming request. + * + * @param cls the `struct TALER_BANK_AdminAddIncomingHandle` + * @param eh the curl request handle + */ +static void +handle_admin_add_incoming_finished (void *cls, + CURL *eh) +{ + struct TALER_BANK_AdminAddIncomingHandle *aai = cls; + long response_code; + json_t *json; + + aai->job = NULL; + json = BAC_download_get_result (&aai->db, + eh, + &response_code); + switch (response_code) + { + case 0: + break; + case MHD_HTTP_OK: + 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 */ + break; + case MHD_HTTP_FORBIDDEN: + /* Access denied */ + 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 */ + break; + case MHD_HTTP_NOT_FOUND: + /* Nothing really to verify, this should never + happen, we should pass the JSON 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", + response_code); + GNUNET_break (0); + response_code = 0; + break; + } + aai->cb (aai->cb_cls, + response_code); + json_decref (json); + 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 bank the bank handle; the bank must be ready to operate + * @param reserve_pub public key of the reserve + * @param amount amount that was deposited + * @param execution_date when did we receive the amount + * @param wire wire details + * @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 TALER_BANK_Context *bank, + const struct TALER_WireTransferIdentifierRawP *wtid, + const struct TALER_Amount *amount, + const json_t *wire, + 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," /* reserve_pub/amount */ + " s:O}", /* execution_Date/wire */ + "wtid", TALER_json_from_data (wtid, + sizeof (*wtid)), + "amount", TALER_json_from_amount (amount), + "wire", wire); + aai = GNUNET_new (struct TALER_BANK_AdminAddIncomingHandle); + aai->bank = bank; + aai->cb = res_cb; + aai->cb_cls = res_cb_cls; + aai->url = BAC_path_to_url (bank, "/admin/add/incoming"); + + eh = curl_easy_init (); + GNUNET_assert (NULL != (aai->json_enc = + json_dumps (admin_obj, + JSON_COMPACT))); + json_decref (admin_obj); + GNUNET_assert (CURLE_OK == + curl_easy_setopt (eh, + CURLOPT_URL, + aai->url)); + GNUNET_assert (CURLE_OK == + curl_easy_setopt (eh, + CURLOPT_POSTFIELDS, + aai->json_enc)); + GNUNET_assert (CURLE_OK == + curl_easy_setopt (eh, + CURLOPT_POSTFIELDSIZE, + strlen (aai->json_enc))); + GNUNET_assert (CURLE_OK == + curl_easy_setopt (eh, + CURLOPT_WRITEFUNCTION, + &BAC_download_cb)); + GNUNET_assert (CURLE_OK == + curl_easy_setopt (eh, + CURLOPT_WRITEDATA, + &aai->db)); + aai->job = BAC_job_add (bank, + eh, + GNUNET_YES, + &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) + { + BAC_job_cancel (aai->job); + aai->job = NULL; + } + curl_slist_free_all (aai->headers); + GNUNET_free_non_null (aai->db.buf); + GNUNET_free (aai->url); + GNUNET_free (aai->json_enc); + GNUNET_free (aai); +} + + +/* end of bank_api_admin.c */ -- cgit v1.2.3