/* This file is part of TALER Copyright (C) 2015, 2016, 2017 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" // FIXME(dold): temporary hack #include "teah_common.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; 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_BANK_parse_ec_ (j); break; case MHD_HTTP_FORBIDDEN: /* Access denied */ ec = TALER_BANK_parse_ec_ (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_BANK_parse_ec_ (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_BANK_parse_ec_ (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_BANK_parse_ec_ (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_BANK_parse_ec_ (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 bank_base_url URL of the bank (used to execute this request) * @param auth authentication data to send to the bank * @param exchange_base_url base URL of the exchange (for tracking) * @param subject wire transfer subject for the transfer * @param amount amount that was deposited * @param debit_account_no account number to withdraw from (53 bits at most) * @param credit_account_no account number to deposit into (53 bits at most) * @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 *bank_base_url, const struct TALER_BANK_AuthenticationData *auth, const char *exchange_base_url, const char *subject, const struct TALER_Amount *amount, uint64_t debit_account_no, uint64_t credit_account_no, TALER_BANK_AdminAddIncomingResultCallback res_cb, void *res_cb_cls) { struct TALER_BANK_AdminAddIncomingHandle *aai; json_t *admin_obj; CURL *eh; if (NULL == exchange_base_url) { GNUNET_break (0); return NULL; } admin_obj = json_pack ("{s:{s:s}, s:s, s:s, s:o, s:I, s:I}", "auth", "type", "basic", "exchange_url", exchange_base_url, "subject", subject, "amount", TALER_JSON_from_amount (amount), "debit_account", (json_int_t) debit_account_no, "credit_account", (json_int_t) credit_account_no); 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_ (bank_base_url, "/admin/add/incoming"); aai->post_ctx.headers = TALER_BANK_make_auth_header_ (auth); GNUNET_assert (NULL != (aai->post_ctx.headers = curl_slist_append (aai->post_ctx.headers, "Content-Type: application/json"))); eh = curl_easy_init (); GNUNET_assert (GNUNET_OK == TEAH_curl_easy_post (&aai->post_ctx, eh, admin_obj)); json_decref (admin_obj); GNUNET_assert (CURLE_OK == curl_easy_setopt (eh, CURLOPT_URL, aai->request_url)); 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; } TEAH_curl_easy_post_finished (&aai->post_ctx); GNUNET_free (aai->request_url); GNUNET_free (aai); } /* end of bank_api_admin.c */