diff options
Diffstat (limited to 'src/lib/exchange_api_withdraw.c')
| -rw-r--r-- | src/lib/exchange_api_withdraw.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/src/lib/exchange_api_withdraw.c b/src/lib/exchange_api_withdraw.c deleted file mode 100644 index b96adacd4..000000000 --- a/src/lib/exchange_api_withdraw.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014-2020 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 - <http://www.gnu.org/licenses/> -*/ -/** - * @file lib/exchange_api_withdraw.c - * @brief Implementation of /reserves/$RESERVE_PUB/withdraw requests with blinding/unblinding - * @author Christian Grothoff - */ -#include "platform.h" -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include <gnunet/gnunet_json_lib.h> -#include <gnunet/gnunet_curl_lib.h> -#include "taler_exchange_service.h" -#include "taler_json_lib.h" -#include "exchange_api_handle.h" -#include "taler_signatures.h" -#include "exchange_api_curl_defaults.h" - - -/** - * @brief A Withdraw Handle - */ -struct TALER_EXCHANGE_WithdrawHandle -{ - - /** - * The connection to exchange this request handle will use - */ - struct TALER_EXCHANGE_Handle *exchange; - - /** - * Handle for the actual (internal) withdraw operation. - */ - struct TALER_EXCHANGE_Withdraw2Handle *wh2; - - /** - * Function to call with the result. - */ - TALER_EXCHANGE_WithdrawCallback cb; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Secrets of the planchet. - */ - struct TALER_PlanchetSecretsP ps; - - /** - * Denomination key we are withdrawing. - */ - struct TALER_EXCHANGE_DenomPublicKey pk; - - /** - * Hash of the public key of the coin we are signing. - */ - struct GNUNET_HashCode c_hash; - -}; - - -/** - * Function called when we're done processing the - * HTTP /reserves/$RESERVE_PUB/withdraw request. - * - * @param cls the `struct TALER_EXCHANGE_WithdrawHandle` - * @param hr HTTP response data - * @param blind_sig blind signature over the coin, NULL on error - */ -static void -handle_reserve_withdraw_finished ( - void *cls, - const struct TALER_EXCHANGE_HttpResponse *hr, - const struct GNUNET_CRYPTO_RsaSignature *blind_sig) -{ - struct TALER_EXCHANGE_WithdrawHandle *wh = cls; - - wh->wh2 = NULL; - if (MHD_HTTP_OK != hr->http_status) - { - wh->cb (wh->cb_cls, - hr, - NULL); - } - else - { - struct TALER_FreshCoin fc; - - if (GNUNET_OK != - TALER_planchet_to_coin (&wh->pk.key, - blind_sig, - &wh->ps, - &wh->c_hash, - &fc)) - { - struct TALER_EXCHANGE_HttpResponse hrx = { - .reply = hr->reply, - .http_status = 0, - .ec = TALER_EC_EXCHANGE_WITHDRAW_UNBLIND_FAILURE - }; - - wh->cb (wh->cb_cls, - &hrx, - NULL); - } - else - { - wh->cb (wh->cb_cls, - hr, - &fc.sig); - GNUNET_CRYPTO_rsa_signature_free (fc.sig.rsa_signature); - } - - } - TALER_EXCHANGE_withdraw_cancel (wh); -} - - -/** - * Withdraw a coin from the exchange using a /reserve/withdraw request. Note - * that to ensure that no money is lost in case of hardware failures, - * the caller must have committed (most of) the arguments to disk - * before calling, and be ready to repeat the request with the same - * arguments in case of failures. - * - * @param exchange the exchange handle; the exchange must be ready to operate - * @param pk kind of coin to create - * @param reserve_priv private key of the reserve to withdraw from - * @param ps secrets of the planchet - * caller must have committed this value to disk before the call (with @a pk) - * @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 handle for the operation on success, NULL on error, i.e. - * if the inputs are invalid (i.e. denomination key not with this exchange). - * In this case, the callback is not called. - */ -struct TALER_EXCHANGE_WithdrawHandle * -TALER_EXCHANGE_withdraw ( - struct TALER_EXCHANGE_Handle *exchange, - const struct TALER_EXCHANGE_DenomPublicKey *pk, - const struct TALER_ReservePrivateKeyP *reserve_priv, - const struct TALER_PlanchetSecretsP *ps, - TALER_EXCHANGE_WithdrawCallback res_cb, - void *res_cb_cls) -{ - struct TALER_PlanchetDetail pd; - struct TALER_EXCHANGE_WithdrawHandle *wh; - - wh = GNUNET_new (struct TALER_EXCHANGE_WithdrawHandle); - wh->exchange = exchange; - wh->cb = res_cb; - wh->cb_cls = res_cb_cls; - wh->pk = *pk; - wh->ps = *ps; - if (GNUNET_OK != - TALER_planchet_prepare (&pk->key, - ps, - &wh->c_hash, - &pd)) - { - GNUNET_break (0); - GNUNET_free (wh); - return NULL; - } - wh->pk.key.rsa_public_key - = GNUNET_CRYPTO_rsa_public_key_dup (pk->key.rsa_public_key); - wh->wh2 = TALER_EXCHANGE_withdraw2 (exchange, - &pd, - reserve_priv, - &handle_reserve_withdraw_finished, - wh); - GNUNET_free (pd.coin_ev); - return wh; -} - - -/** - * Cancel a withdraw status request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param wh the withdraw sign request handle - */ -void -TALER_EXCHANGE_withdraw_cancel (struct TALER_EXCHANGE_WithdrawHandle *wh) -{ - if (NULL != wh->wh2) - { - TALER_EXCHANGE_withdraw2_cancel (wh->wh2); - wh->wh2 = NULL; - } - GNUNET_CRYPTO_rsa_public_key_free (wh->pk.key.rsa_public_key); - GNUNET_free (wh); -} |