719 lines
24 KiB
C
719 lines
24 KiB
C
/*
|
||
This file is part of TALER
|
||
Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
|
||
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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
|
||
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
|
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
||
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 mint-lib/mint_api_deposit.c
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* @brief Implementation of the /deposit request of the mint's HTTP API
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* @author Sree Harsha Totakura <sreeharsha@totakura.in>
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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_mint_service.h"
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#include "mint_api_json.h"
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#include "mint_api_context.h"
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#include "mint_api_handle.h"
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#include "taler_signatures.h"
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||
|
||
|
||
/**
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* Print JSON parsing related error information
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||
*/
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#define JSON_WARN(error) \
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GNUNET_log (GNUNET_ERROR_TYPE_WARNING, \
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"JSON parsing failed at %s:%u: %s (%s)", \
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||
__FILE__, __LINE__, error.text, error.source)
|
||
|
||
|
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/**
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* @brief A Deposit Handle
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||
*/
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||
struct TALER_MINT_DepositHandle
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{
|
||
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||
/**
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* The connection to mint this request handle will use
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||
*/
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struct TALER_MINT_Handle *mint;
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||
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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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||
/**
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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 MAC_Job *job;
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||
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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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/**
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* Function to call with the result.
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*/
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TALER_MINT_DepositResultCallback 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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/**
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* Download buffer
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*/
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void *buf;
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||
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/**
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* Information the mint should sign in response.
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*/
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struct TALER_DepositConfirmationPS depconf;
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||
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/**
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* Value of the /deposit transaction, including fee.
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*/
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struct TALER_Amount amount_with_fee;
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/**
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* Total value of the coin being transacted with.
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*/
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struct TALER_Amount coin_value;
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||
|
||
/**
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* The size of the download buffer
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||
*/
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size_t buf_size;
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||
|
||
/**
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* Error code (based on libc errno) if we failed to download
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* (i.e. response too large).
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*/
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int eno;
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};
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||
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/**
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* Verify that the signature on the "200 OK" response
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* from the mint is valid.
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*
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* @param dh deposit handle
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* @param json json reply with the signature
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* @return #GNUNET_OK if the signature is valid, #GNUNET_SYSERR if not
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*/
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static int
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verify_deposit_signature_ok (const struct TALER_MINT_DepositHandle *dh,
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json_t *json)
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||
{
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struct TALER_MintSignatureP mint_sig;
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const struct TALER_MINT_Keys *key_state;
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const struct TALER_MintPublicKeyP *mint_pub;
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struct MAJ_Specification spec[] = {
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MAJ_spec_fixed_auto ("sig", &mint_sig),
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MAJ_spec_end
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};
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if (GNUNET_OK !=
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MAJ_parse_json (json,
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spec))
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{
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GNUNET_break_op (0);
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return GNUNET_SYSERR;
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}
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key_state = TALER_MINT_get_keys (dh->mint);
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mint_pub = TALER_MINT_get_signing_key (key_state);
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if (GNUNET_OK !=
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GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_MINT_CONFIRM_DEPOSIT,
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&dh->depconf.purpose,
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&mint_sig.eddsa_signature,
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&mint_pub->eddsa_pub))
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{
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GNUNET_break_op (0);
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return GNUNET_SYSERR;
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}
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return GNUNET_OK;
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||
}
|
||
|
||
|
||
/**
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||
* Verify that the signatures on the "403 FORBIDDEN" response from the
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* mint demonstrating customer double-spending are valid.
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||
*
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* @param dh deposit handle
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* @param json json reply with the signature(s) and transaction history
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* @return #GNUNET_OK if the signature(s) is valid, #GNUNET_SYSERR if not
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*/
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static int
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verify_deposit_signature_forbidden (const struct TALER_MINT_DepositHandle *dh,
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json_t *json)
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||
{
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||
json_t *history;
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size_t len;
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||
size_t off;
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||
struct TALER_Amount total;
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||
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history = json_object_get (json,
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"history");
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if (NULL == history)
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{
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GNUNET_break_op (0);
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return GNUNET_SYSERR;
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}
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len = json_array_size (history);
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if (0 == len)
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{
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GNUNET_break_op (0);
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return GNUNET_SYSERR;
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}
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TALER_amount_get_zero (dh->coin_value.currency,
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&total);
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for (off=0;off<len;off++)
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{
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json_t *transaction;
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struct TALER_Amount amount;
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struct GNUNET_CRYPTO_EccSignaturePurpose *purpose;
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struct MAJ_Specification spec[] = {
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MAJ_spec_amount ("amount",
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&amount),
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MAJ_spec_eddsa_signed_purpose ("signature",
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&purpose,
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&dh->depconf.coin_pub.eddsa_pub),
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MAJ_spec_end
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};
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transaction = json_array_get (history,
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off);
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if (GNUNET_OK !=
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MAJ_parse_json (transaction,
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spec))
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{
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GNUNET_break_op (0);
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return GNUNET_SYSERR;
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}
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switch (ntohl (purpose->purpose))
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{
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case TALER_SIGNATURE_WALLET_COIN_DEPOSIT:
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{
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const struct TALER_DepositRequestPS *dr;
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struct TALER_Amount dr_amount;
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if (ntohl (purpose->size) != sizeof (struct TALER_DepositRequestPS))
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{
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GNUNET_break (0);
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MAJ_parse_free (spec);
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return GNUNET_SYSERR;
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}
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dr = (const struct TALER_DepositRequestPS *) purpose;
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TALER_amount_ntoh (&dr_amount,
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&dr->amount_with_fee);
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if (0 != TALER_amount_cmp (&dr_amount,
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&amount))
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{
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GNUNET_break (0);
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MAJ_parse_free (spec);
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return GNUNET_SYSERR;
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}
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}
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break;
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case TALER_SIGNATURE_WALLET_COIN_MELT:
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{
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const struct TALER_RefreshMeltCoinAffirmationPS *rm;
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struct TALER_Amount rm_amount;
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||
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if (ntohl (purpose->size) != sizeof (struct TALER_RefreshMeltCoinAffirmationPS))
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{
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GNUNET_break (0);
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MAJ_parse_free (spec);
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return GNUNET_SYSERR;
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}
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rm = (const struct TALER_RefreshMeltCoinAffirmationPS *) purpose;
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TALER_amount_ntoh (&rm_amount,
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&rm->amount_with_fee);
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if (0 != TALER_amount_cmp (&rm_amount,
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&amount))
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{
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GNUNET_break (0);
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MAJ_parse_free (spec);
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return GNUNET_SYSERR;
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}
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}
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break;
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default:
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/* signature not supported, new version on server? */
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GNUNET_break (0);
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MAJ_parse_free (spec);
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return GNUNET_SYSERR;
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}
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if (GNUNET_OK !=
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TALER_amount_add (&total,
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&total,
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&amount))
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{
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/* overflow in history already!? inconceivable! Bad mint! */
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GNUNET_break_op (0);
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MAJ_parse_free (spec);
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return GNUNET_SYSERR;
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}
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MAJ_parse_free (spec);
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}
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if (GNUNET_OK !=
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TALER_amount_add (&total,
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&total,
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&dh->amount_with_fee))
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{
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/* clearly not OK if our transaction would have caused
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the overflow... */
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return GNUNET_OK;
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}
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if (0 >= TALER_amount_cmp (&total,
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&dh->coin_value))
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{
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/* transaction should have still fit */
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GNUNET_break (0);
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return GNUNET_SYSERR;
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||
}
|
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/* everything OK, proof of double-spending was provided */
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return GNUNET_OK;
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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 /deposit request.
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*
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* @param cls the `struct TALER_MINT_DepositHandle`
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*/
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static void
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handle_deposit_finished (void *cls,
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CURL *eh)
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{
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struct TALER_MINT_DepositHandle *dh = cls;
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long response_code;
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json_error_t error;
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||
json_t *json;
|
||
|
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json = NULL;
|
||
if (0 == dh->eno)
|
||
{
|
||
json = json_loadb (dh->buf,
|
||
dh->buf_size,
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JSON_REJECT_DUPLICATES | JSON_DISABLE_EOF_CHECK,
|
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&error);
|
||
if (NULL == json)
|
||
{
|
||
JSON_WARN (error);
|
||
response_code = 0;
|
||
}
|
||
}
|
||
if (NULL != json)
|
||
{
|
||
if (CURLE_OK !=
|
||
curl_easy_getinfo (eh,
|
||
CURLINFO_RESPONSE_CODE,
|
||
&response_code))
|
||
{
|
||
/* unexpected error... */
|
||
GNUNET_break (0);
|
||
response_code = 0;
|
||
}
|
||
}
|
||
switch (response_code)
|
||
{
|
||
case MHD_HTTP_OK:
|
||
if (GNUNET_OK !=
|
||
verify_deposit_signature_ok (dh,
|
||
json))
|
||
{
|
||
GNUNET_break_op (0);
|
||
response_code = 0;
|
||
}
|
||
break;
|
||
case MHD_HTTP_BAD_REQUEST:
|
||
/* This should never happen, either us or the mint is buggy
|
||
(or API version conflict); just pass JSON reply to the application */
|
||
break;
|
||
case MHD_HTTP_FORBIDDEN:
|
||
/* Double spending; check signatures on transaction history */
|
||
if (GNUNET_OK !=
|
||
verify_deposit_signature_forbidden (dh,
|
||
json))
|
||
{
|
||
GNUNET_break_op (0);
|
||
response_code = 0;
|
||
}
|
||
break;
|
||
case MHD_HTTP_UNAUTHORIZED:
|
||
/* Nothing really to verify, mint 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_break (0);
|
||
response_code = 0;
|
||
break;
|
||
}
|
||
dh->cb (dh->cb_cls,
|
||
response_code,
|
||
json);
|
||
json_decref (json);
|
||
TALER_MINT_deposit_cancel (dh);
|
||
}
|
||
|
||
|
||
/**
|
||
* Verify signature information about the deposit.
|
||
*
|
||
* @param dki public key information
|
||
* @param amount the amount to be deposited
|
||
* @param h_wire hash of the merchant’s account details
|
||
* @param h_contract hash of the contact of the merchant with the customer (further details are never disclosed to the mint)
|
||
* @param coin_pub coin’s public key
|
||
* @param denom_pub denomination key with which the coin is signed
|
||
* @param denom_sig mint’s unblinded signature of the coin
|
||
* @param timestamp timestamp when the contract was finalized, must match approximately the current time of the mint
|
||
* @param transaction_id transaction id for the transaction between merchant and customer
|
||
* @param merchant_pub the public key of the merchant (used to identify the merchant for refund requests)
|
||
* @param refund_deadline date until which the merchant can issue a refund to the customer via the mint (can be zero if refunds are not allowed)
|
||
* @param coin_sig the signature made with purpose #TALER_SIGNATURE_WALLET_COIN_DEPOSIT made by the customer with the coin’s private key.
|
||
* @return #GNUNET_OK if signatures are OK, #GNUNET_SYSERR if not
|
||
*/
|
||
static int
|
||
verify_signatures (const struct TALER_MINT_DenomPublicKey *dki,
|
||
const struct TALER_Amount *amount,
|
||
const struct GNUNET_HashCode *h_wire,
|
||
const struct GNUNET_HashCode *h_contract,
|
||
const struct TALER_CoinSpendPublicKeyP *coin_pub,
|
||
const struct TALER_DenominationSignature *denom_sig,
|
||
const struct TALER_DenominationPublicKey *denom_pub,
|
||
struct GNUNET_TIME_Absolute timestamp,
|
||
uint64_t transaction_id,
|
||
const struct TALER_MerchantPublicKeyP *merchant_pub,
|
||
struct GNUNET_TIME_Absolute refund_deadline,
|
||
const struct TALER_CoinSpendSignatureP *coin_sig)
|
||
{
|
||
struct TALER_DepositRequestPS dr;
|
||
struct TALER_CoinPublicInfo coin_info;
|
||
|
||
dr.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_COIN_DEPOSIT);
|
||
dr.purpose.size = htonl (sizeof (struct TALER_DepositRequestPS));
|
||
dr.h_contract = *h_contract;
|
||
dr.h_wire = *h_wire;
|
||
dr.timestamp = GNUNET_TIME_absolute_hton (timestamp);
|
||
dr.refund_deadline = GNUNET_TIME_absolute_hton (refund_deadline);
|
||
dr.transaction_id = GNUNET_htonll (transaction_id);
|
||
TALER_amount_hton (&dr.amount_with_fee,
|
||
amount);
|
||
TALER_amount_hton (&dr.deposit_fee,
|
||
&dki->fee_deposit);
|
||
dr.merchant = *merchant_pub;
|
||
dr.coin_pub = *coin_pub;
|
||
if (GNUNET_OK !=
|
||
GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_COIN_DEPOSIT,
|
||
&dr.purpose,
|
||
&coin_sig->eddsa_signature,
|
||
&coin_pub->eddsa_pub))
|
||
{
|
||
TALER_LOG_WARNING ("Invalid coin signature on /deposit request\n");
|
||
return GNUNET_SYSERR;
|
||
}
|
||
|
||
/* check coin signature */
|
||
coin_info.coin_pub = *coin_pub;
|
||
coin_info.denom_pub = *denom_pub;
|
||
coin_info.denom_sig = *denom_sig;
|
||
if (GNUNET_YES !=
|
||
TALER_test_coin_valid (&coin_info))
|
||
{
|
||
TALER_LOG_WARNING ("Invalid coin passed for /deposit\n");
|
||
return GNUNET_SYSERR;
|
||
}
|
||
if (TALER_amount_cmp (&dki->fee_deposit,
|
||
amount) < 0)
|
||
{
|
||
TALER_LOG_WARNING ("Deposit amount smaller than fee\n");
|
||
return GNUNET_SYSERR;
|
||
}
|
||
return GNUNET_OK;
|
||
}
|
||
|
||
|
||
/**
|
||
* Callback used when downloading the reply to a /deposit request.
|
||
* Just appends all of the data to the `buf` in the
|
||
* `struct TALER_MINT_DepositHandle` for further processing. The size of
|
||
* the download is limited to #GNUNET_MAX_MALLOC_CHECKED, if
|
||
* the download exceeds this size, we abort with an error.
|
||
*
|
||
* @param bufptr data downloaded via HTTP
|
||
* @param size size of an item in @a bufptr
|
||
* @param nitems number of items in @a bufptr
|
||
* @param cls the `struct TALER_MINT_DepositHandle`
|
||
* @return number of bytes processed from @a bufptr
|
||
*/
|
||
static int
|
||
deposit_download_cb (char *bufptr,
|
||
size_t size,
|
||
size_t nitems,
|
||
void *cls)
|
||
{
|
||
struct TALER_MINT_DepositHandle *dh = cls;
|
||
size_t msize;
|
||
void *buf;
|
||
|
||
if (0 == size * nitems)
|
||
{
|
||
/* Nothing (left) to do */
|
||
return 0;
|
||
}
|
||
msize = size * nitems;
|
||
if ( (msize + dh->buf_size) >= GNUNET_MAX_MALLOC_CHECKED)
|
||
{
|
||
dh->eno = ENOMEM;
|
||
return 0; /* signals an error to curl */
|
||
}
|
||
dh->buf = GNUNET_realloc (dh->buf,
|
||
dh->buf_size + msize);
|
||
buf = dh->buf + dh->buf_size;
|
||
memcpy (buf, bufptr, msize);
|
||
dh->buf_size += msize;
|
||
return msize;
|
||
}
|
||
|
||
|
||
/**
|
||
* Submit a deposit permission to the mint and get the mint's response.
|
||
* Note that while we return the response verbatim to the caller for
|
||
* further processing, we do already verify that the response is
|
||
* well-formed (i.e. that signatures included in the response are all
|
||
* valid). If the mint's reply is not well-formed, we return an
|
||
* HTTP status code of zero to @a cb.
|
||
*
|
||
* We also verify that the @a coin_sig is valid for this deposit
|
||
* request, and that the @a ub_sig is a valid signature for @a
|
||
* coin_pub. Also, the @a mint must be ready to operate (i.e. have
|
||
* finished processing the /keys reply). If either check fails, we do
|
||
* NOT initiate the transaction with the mint and instead return NULL.
|
||
*
|
||
* @param mint the mint handle; the mint must be ready to operate
|
||
* @param amount the amount to be deposited
|
||
* @param wire the merchant’s account details, in a format supported by the mint
|
||
* @param h_contract hash of the contact of the merchant with the customer (further details are never disclosed to the mint)
|
||
* @param coin_pub coin’s public key
|
||
* @param denom_pub denomination key with which the coin is signed
|
||
* @param denom_sig mint’s unblinded signature of the coin
|
||
* @param timestamp timestamp when the contract was finalized, must match approximately the current time of the mint
|
||
* @param transaction_id transaction id for the transaction between merchant and customer
|
||
* @param merchant_pub the public key of the merchant (used to identify the merchant for refund requests)
|
||
* @param refund_deadline date until which the merchant can issue a refund to the customer via the mint (can be zero if refunds are not allowed)
|
||
* @param coin_sig the signature made with purpose #TALER_SIGNATURE_WALLET_COIN_DEPOSIT made by the customer with the coin’s private key.
|
||
* @param cb the callback to call when a reply for this request is available
|
||
* @param cb_cls closure for the above callback
|
||
* @return a handle for this request; NULL if the inputs are invalid (i.e.
|
||
* signatures fail to verify). In this case, the callback is not called.
|
||
*/
|
||
struct TALER_MINT_DepositHandle *
|
||
TALER_MINT_deposit (struct TALER_MINT_Handle *mint,
|
||
const struct TALER_Amount *amount,
|
||
json_t *wire_details,
|
||
const struct GNUNET_HashCode *h_contract,
|
||
const struct TALER_CoinSpendPublicKeyP *coin_pub,
|
||
const struct TALER_DenominationSignature *denom_sig,
|
||
const struct TALER_DenominationPublicKey *denom_pub,
|
||
struct GNUNET_TIME_Absolute timestamp,
|
||
uint64_t transaction_id,
|
||
const struct TALER_MerchantPublicKeyP *merchant_pub,
|
||
struct GNUNET_TIME_Absolute refund_deadline,
|
||
const struct TALER_CoinSpendSignatureP *coin_sig,
|
||
TALER_MINT_DepositResultCallback cb,
|
||
void *cb_cls)
|
||
{
|
||
const struct TALER_MINT_Keys *key_state;
|
||
const struct TALER_MINT_DenomPublicKey *dki;
|
||
struct TALER_MINT_DepositHandle *dh;
|
||
struct TALER_MINT_Context *ctx;
|
||
json_t *deposit_obj;
|
||
CURL *eh;
|
||
struct GNUNET_HashCode h_wire;
|
||
struct TALER_Amount amount_without_fee;
|
||
|
||
if (GNUNET_YES !=
|
||
MAH_handle_is_ready (mint))
|
||
{
|
||
GNUNET_break (0);
|
||
return NULL;
|
||
}
|
||
/* initialize h_wire */
|
||
if (GNUNET_OK !=
|
||
TALER_hash_json (wire_details,
|
||
&h_wire))
|
||
{
|
||
GNUNET_break (0);
|
||
return NULL;
|
||
}
|
||
key_state = TALER_MINT_get_keys (mint);
|
||
dki = TALER_MINT_get_denomination_key (key_state,
|
||
denom_pub);
|
||
if (NULL == dki)
|
||
{
|
||
TALER_LOG_WARNING ("Denomination key unknown to mint\n");
|
||
return NULL;
|
||
}
|
||
|
||
if (GNUNET_OK !=
|
||
verify_signatures (dki,
|
||
amount,
|
||
&h_wire,
|
||
h_contract,
|
||
coin_pub,
|
||
denom_sig,
|
||
denom_pub,
|
||
timestamp,
|
||
transaction_id,
|
||
merchant_pub,
|
||
refund_deadline,
|
||
coin_sig))
|
||
{
|
||
GNUNET_break_op (0);
|
||
return NULL;
|
||
}
|
||
|
||
deposit_obj = json_pack ("{s:o, s:o," /* f/wire */
|
||
" s:s, s:s," /* H_wire, H_contract */
|
||
" s:s, s:s," /* coin_pub, denom_pub */
|
||
" s:s, s:s," /* ub_sig, timestamp */
|
||
" s:I, s:s," /* transaction id, merchant_pub */
|
||
" s:s, s:s}", /* refund_deadline, coin_sig */
|
||
"f", TALER_json_from_amount (amount),
|
||
"wire", wire_details,
|
||
"H_wire", TALER_json_from_data (&h_wire,
|
||
sizeof (h_wire)),
|
||
"H_contract", TALER_json_from_data (&h_contract,
|
||
sizeof (h_contract)),
|
||
"coin_pub", TALER_json_from_data (coin_pub,
|
||
sizeof (*coin_pub)),
|
||
"denom_pub", TALER_json_from_rsa_public_key (denom_pub->rsa_public_key),
|
||
"ub_sig", TALER_json_from_rsa_signature (denom_sig->rsa_signature),
|
||
"timestamp", TALER_json_from_abs (timestamp),
|
||
"transaction_id", (json_int_t) transaction_id,
|
||
"merchant_pub", TALER_json_from_data (merchant_pub,
|
||
sizeof (*merchant_pub)),
|
||
"refund_deadline", TALER_json_from_abs (refund_deadline),
|
||
"coin_sig", TALER_json_from_data (coin_sig,
|
||
sizeof (*coin_sig))
|
||
);
|
||
|
||
dh = GNUNET_new (struct TALER_MINT_DepositHandle);
|
||
dh->mint = mint;
|
||
dh->cb = cb;
|
||
dh->cb_cls = cb_cls;
|
||
dh->url = MAH_path_to_url (mint, "/deposit");
|
||
dh->depconf.purpose.size = htonl (sizeof (struct TALER_DepositConfirmationPS));
|
||
dh->depconf.purpose.purpose = htonl (TALER_SIGNATURE_MINT_CONFIRM_DEPOSIT);
|
||
dh->depconf.h_contract = *h_contract;
|
||
dh->depconf.h_wire = h_wire;
|
||
dh->depconf.transaction_id = GNUNET_htonll (transaction_id);
|
||
dh->depconf.timestamp = GNUNET_TIME_absolute_hton (timestamp);
|
||
dh->depconf.refund_deadline = GNUNET_TIME_absolute_hton (refund_deadline);
|
||
TALER_amount_subtract (&amount_without_fee,
|
||
amount,
|
||
&dki->fee_deposit);
|
||
TALER_amount_hton (&dh->depconf.amount_without_fee,
|
||
&amount_without_fee);
|
||
dh->depconf.coin_pub = *coin_pub;
|
||
dh->depconf.merchant = *merchant_pub;
|
||
dh->amount_with_fee = *amount;
|
||
dh->coin_value = dki->value;
|
||
|
||
eh = curl_easy_init ();
|
||
GNUNET_assert (NULL != (dh->json_enc =
|
||
json_dumps (deposit_obj,
|
||
JSON_COMPACT)));
|
||
json_decref (deposit_obj);
|
||
GNUNET_assert (CURLE_OK ==
|
||
curl_easy_setopt (eh,
|
||
CURLOPT_URL,
|
||
dh->url));
|
||
GNUNET_assert (CURLE_OK ==
|
||
curl_easy_setopt (eh,
|
||
CURLOPT_POSTFIELDS,
|
||
dh->json_enc));
|
||
GNUNET_assert (CURLE_OK ==
|
||
curl_easy_setopt (eh,
|
||
CURLOPT_POSTFIELDSIZE,
|
||
strlen (dh->json_enc)));
|
||
GNUNET_assert (CURLE_OK ==
|
||
curl_easy_setopt (eh,
|
||
CURLOPT_WRITEFUNCTION,
|
||
&deposit_download_cb));
|
||
GNUNET_assert (CURLE_OK ==
|
||
curl_easy_setopt (eh,
|
||
CURLOPT_WRITEDATA,
|
||
dh));
|
||
GNUNET_assert (NULL != (dh->headers =
|
||
curl_slist_append (dh->headers,
|
||
"Content-Type: application/json")));
|
||
GNUNET_assert (CURLE_OK ==
|
||
curl_easy_setopt (eh,
|
||
CURLOPT_HTTPHEADER,
|
||
dh->headers));
|
||
ctx = MAH_handle_to_context (mint);
|
||
dh->job = MAC_job_add (ctx,
|
||
eh,
|
||
&handle_deposit_finished,
|
||
dh);
|
||
return dh;
|
||
}
|
||
|
||
|
||
/**
|
||
* Cancel a deposit permission request. This function cannot be used
|
||
* on a request handle if a response is already served for it.
|
||
*
|
||
* @param deposit the deposit permission request handle
|
||
*/
|
||
void
|
||
TALER_MINT_deposit_cancel (struct TALER_MINT_DepositHandle *deposit)
|
||
{
|
||
MAC_job_cancel (deposit->job);
|
||
curl_slist_free_all (deposit->headers);
|
||
GNUNET_free (deposit->url);
|
||
GNUNET_free (deposit->json_enc);
|
||
GNUNET_free (deposit);
|
||
}
|
||
|
||
|
||
/* end of mint_api_deposit.c */
|