diff options
Diffstat (limited to 'src/mint-lib/mint_api_reserve.c')
| -rw-r--r-- | src/mint-lib/mint_api_reserve.c | 930 |
1 files changed, 0 insertions, 930 deletions
diff --git a/src/mint-lib/mint_api_reserve.c b/src/mint-lib/mint_api_reserve.c deleted file mode 100644 index 1f8140cff..000000000 --- a/src/mint-lib/mint_api_reserve.c +++ /dev/null @@ -1,930 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 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 - <http://www.gnu.org/licenses/> -*/ -/** - * @file mint-lib/mint_api_reserve.c - * @brief Implementation of the /reserve requests of the mint's HTTP API - * @author Christian Grothoff - */ -#include "platform.h" -#include <curl/curl.h> -#include <jansson.h> -#include <microhttpd.h> /* just for HTTP status codes */ -#include <gnunet/gnunet_util_lib.h> -#include "taler_mint_service.h" -#include "mint_api_json.h" -#include "mint_api_context.h" -#include "mint_api_handle.h" -#include "taler_signatures.h" - - -/* ********************** /reserve/status ********************** */ - -/** - * @brief A Withdraw Status Handle - */ -struct TALER_MINT_ReserveStatusHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_ReserveStatusResultCallback cb; - - /** - * Public key of the reserve we are querying. - */ - struct TALER_ReservePublicKeyP reserve_pub; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - -}; - - -/** - * Parse history given in JSON format and return it in binary - * format. - * - * @param[in] history JSON array with the history - * @param reserve_pub public key of the reserve to inspect - * @param currency currency we expect the balance to be in - * @param[out] balance final balance - * @param history_length number of entries in @a history - * @param[out] rhistory array of length @a history_length, set to the - * parsed history entries - * @return #GNUNET_OK if history was valid and @a rhistory and @a balance - * were set, - * #GNUNET_SYSERR if there was a protocol violation in @a history - */ -static int -parse_reserve_history (json_t *history, - const struct TALER_ReservePublicKeyP *reserve_pub, - const char *currency, - struct TALER_Amount *balance, - unsigned int history_length, - struct TALER_MINT_ReserveHistory *rhistory) -{ - struct GNUNET_HashCode uuid[history_length]; - unsigned int uuid_off; - struct TALER_Amount total_in; - struct TALER_Amount total_out; - size_t off; - - TALER_amount_get_zero (currency, - &total_in); - TALER_amount_get_zero (currency, - &total_out); - uuid_off = 0; - for (off=0;off<history_length;off++) - { - json_t *transaction; - struct TALER_Amount amount; - const char *type; - struct MAJ_Specification hist_spec[] = { - MAJ_spec_string ("type", &type), - MAJ_spec_amount ("amount", - &amount), - /* 'wire' and 'signature' are optional depending on 'type'! */ - MAJ_spec_end - }; - - transaction = json_array_get (history, - off); - if (GNUNET_OK != - MAJ_parse_json (transaction, - hist_spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - rhistory[off].amount = amount; - - if (0 == strcasecmp (type, - "DEPOSIT")) - { - json_t *wire; - - rhistory[off].type = TALER_MINT_RTT_DEPOSIT; - if (GNUNET_OK != - TALER_amount_add (&total_in, - &total_in, - &amount)) - { - /* overflow in history already!? inconceivable! Bad mint! */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - wire = json_object_get (transaction, - "wire"); - /* check 'wire' is a JSON object (no need to check wireformat, - but we do at least expect "some" JSON object here) */ - if ( (NULL == wire) || - (! json_is_object (wire)) ) - { - /* not even a JSON 'wire' specification, not acceptable */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - rhistory[off].details.wire_in_details = wire; - /* end type==DEPOSIT */ - } - else if (0 == strcasecmp (type, - "WITHDRAW")) - { - struct TALER_ReserveSignatureP sig; - struct TALER_WithdrawRequestPS withdraw_purpose; - struct TALER_Amount amount_from_purpose; - struct MAJ_Specification withdraw_spec[] = { - MAJ_spec_fixed_auto ("signature", - &sig), - MAJ_spec_fixed_auto ("details", - &withdraw_purpose), - MAJ_spec_end - }; - unsigned int i; - - rhistory[off].type = TALER_MINT_RTT_WITHDRAWAL; - if (GNUNET_OK != - MAJ_parse_json (transaction, - withdraw_spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - /* Check that the signature is a valid withdraw request */ - if (GNUNET_OK != - GNUNET_CRYPTO_eddsa_verify (TALER_SIGNATURE_WALLET_RESERVE_WITHDRAW, - &withdraw_purpose.purpose, - &sig.eddsa_signature, - &reserve_pub->eddsa_pub)) - { - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - TALER_amount_ntoh (&amount_from_purpose, - &withdraw_purpose.amount_with_fee); - if (0 != TALER_amount_cmp (&amount, - &amount_from_purpose)) - { - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - rhistory[off].details.out_authorization_sig = json_object_get (transaction, - "signature"); - /* Check check that the same withdraw transaction - isn't listed twice by the mint. We use the - "uuid" array to remember the hashes of all - purposes, and compare the hashes to find - duplicates. */ - GNUNET_CRYPTO_hash (&withdraw_purpose, - ntohl (withdraw_purpose.purpose.size), - &uuid[uuid_off]); - for (i=0;i<uuid_off;i++) - { - if (0 == memcmp (&uuid[uuid_off], - &uuid[i], - sizeof (struct GNUNET_HashCode))) - { - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - } - uuid_off++; - - if (GNUNET_OK != - TALER_amount_add (&total_out, - &total_out, - &amount)) - { - /* overflow in history already!? inconceivable! Bad mint! */ - GNUNET_break_op (0); - MAJ_parse_free (withdraw_spec); - return GNUNET_SYSERR; - } - /* end type==WITHDRAW */ - } - else - { - /* unexpected 'type', protocol incompatibility, complain! */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - } - - /* check balance = total_in - total_out < withdraw-amount */ - if (GNUNET_SYSERR == - TALER_amount_subtract (balance, - &total_in, - &total_out)) - { - /* total_in < total_out, why did the mint ever allow this!? */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /reserve/status request. - * - * @param cls the `struct TALER_MINT_ReserveStatusHandle` - * @param eh curl handle of the request that finished - */ -static void -handle_reserve_status_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_ReserveStatusHandle *wsh = cls; - long response_code; - json_t *json; - - wsh->job = NULL; - json = MAC_download_get_result (&wsh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - { - /* TODO: move into separate function... */ - json_t *history; - unsigned int len; - struct TALER_Amount balance; - struct TALER_Amount balance_from_history; - struct MAJ_Specification spec[] = { - MAJ_spec_amount ("balance", &balance), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - history = json_object_get (json, - "history"); - if (NULL == history) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - len = json_array_size (history); - { - struct TALER_MINT_ReserveHistory rhistory[len]; - - if (GNUNET_OK != - parse_reserve_history (history, - &wsh->reserve_pub, - balance.currency, - &balance_from_history, - len, - rhistory)) - { - GNUNET_break_op (0); - response_code = 0; - break; - } - if (0 != - TALER_amount_cmp (&balance_from_history, - &balance)) - { - /* mint cannot add up balances!? */ - GNUNET_break_op (0); - response_code = 0; - break; - } - wsh->cb (wsh->cb_cls, - response_code, - json, - &balance, - len, - rhistory); - wsh->cb = NULL; - } - } - 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_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; - } - if (NULL != wsh->cb) - wsh->cb (wsh->cb_cls, - response_code, - json, - NULL, - 0, NULL); - json_decref (json); - TALER_MINT_reserve_status_cancel (wsh); -} - - -/** - * Submit a request to obtain the transaction history of a reserve - * from the mint. Note that while we return the full response 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 and add up to the balance). If the mint's - * reply is not well-formed, we return an HTTP status code of zero to - * @a cb. - * - * @param mint the mint handle; the mint must be ready to operate - * @param reserve_pub public key of the reserve to inspect - * @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_ReserveStatusHandle * -TALER_MINT_reserve_status (struct TALER_MINT_Handle *mint, - const struct TALER_ReservePublicKeyP *reserve_pub, - TALER_MINT_ReserveStatusResultCallback cb, - void *cb_cls) -{ - struct TALER_MINT_ReserveStatusHandle *wsh; - struct TALER_MINT_Context *ctx; - CURL *eh; - char *pub_str; - char *arg_str; - - if (GNUNET_YES != - MAH_handle_is_ready (mint)) - { - GNUNET_break (0); - return NULL; - } - pub_str = GNUNET_STRINGS_data_to_string_alloc (reserve_pub, - sizeof (struct TALER_ReservePublicKeyP)); - GNUNET_asprintf (&arg_str, - "/reserve/status?reserve_pub=%s", - pub_str); - GNUNET_free (pub_str); - wsh = GNUNET_new (struct TALER_MINT_ReserveStatusHandle); - wsh->mint = mint; - wsh->cb = cb; - wsh->cb_cls = cb_cls; - wsh->reserve_pub = *reserve_pub; - wsh->url = MAH_path_to_url (mint, - arg_str); - GNUNET_free (arg_str); - - eh = curl_easy_init (); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wsh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wsh->db)); - ctx = MAH_handle_to_context (mint); - wsh->job = MAC_job_add (ctx, - eh, - GNUNET_NO, - &handle_reserve_status_finished, - wsh); - return wsh; -} - - -/** - * Cancel a withdraw status request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param wsh the withdraw status request handle - */ -void -TALER_MINT_reserve_status_cancel (struct TALER_MINT_ReserveStatusHandle *wsh) -{ - if (NULL != wsh->job) - { - MAC_job_cancel (wsh->job); - wsh->job = NULL; - } - GNUNET_free_non_null (wsh->db.buf); - GNUNET_free (wsh->url); - GNUNET_free (wsh); -} - - -/* ********************** /reserve/withdraw ********************** */ - -/** - * @brief A Withdraw Sign Handle - */ -struct TALER_MINT_ReserveWithdrawHandle -{ - - /** - * The connection to mint this request handle will use - */ - struct TALER_MINT_Handle *mint; - - /** - * The url for this request. - */ - char *url; - - /** - * JSON encoding of the request to POST. - */ - char *json_enc; - - /** - * Handle for the request. - */ - struct MAC_Job *job; - - /** - * Function to call with the result. - */ - TALER_MINT_ReserveWithdrawResultCallback cb; - - /** - * Key used to blind the value. - */ - const struct TALER_DenominationBlindingKey *blinding_key; - - /** - * Denomination key we are withdrawing. - */ - const struct TALER_MINT_DenomPublicKey *pk; - - /** - * Closure for @a cb. - */ - void *cb_cls; - - /** - * Download buffer - */ - struct MAC_DownloadBuffer db; - - /** - * Hash of the public key of the coin we are signing. - */ - struct GNUNET_HashCode c_hash; - - /** - * Public key of the reserve we are withdrawing from. - */ - struct TALER_ReservePublicKeyP reserve_pub; - -}; - - -/** - * We got a 200 OK response for the /reserve/withdraw operation. - * Extract the coin's signature and return it to the caller. - * The signature we get from the mint is for the blinded value. - * Thus, we first must unblind it and then should verify its - * validity against our coin's hash. - * - * If everything checks out, we return the unblinded signature - * to the application via the callback. - * - * @param wsh operation handle - * @param json reply from the mint - * @return #GNUNET_OK on success, #GNUNET_SYSERR on errors - */ -static int -reserve_withdraw_ok (struct TALER_MINT_ReserveWithdrawHandle *wsh, - json_t *json) -{ - struct GNUNET_CRYPTO_rsa_Signature *blind_sig; - struct GNUNET_CRYPTO_rsa_Signature *sig; - struct TALER_DenominationSignature dsig; - struct MAJ_Specification spec[] = { - MAJ_spec_rsa_signature ("ev_sig", &blind_sig), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - sig = GNUNET_CRYPTO_rsa_unblind (blind_sig, - wsh->blinding_key->rsa_blinding_key, - wsh->pk->key.rsa_public_key); - GNUNET_CRYPTO_rsa_signature_free (blind_sig); - if (GNUNET_OK != - GNUNET_CRYPTO_rsa_verify (&wsh->c_hash, - sig, - wsh->pk->key.rsa_public_key)) - { - GNUNET_break_op (0); - GNUNET_CRYPTO_rsa_signature_free (sig); - return GNUNET_SYSERR; - } - /* signature is valid, return it to the application */ - dsig.rsa_signature = sig; - wsh->cb (wsh->cb_cls, - MHD_HTTP_OK, - &dsig, - json); - /* make sure callback isn't called again after return */ - wsh->cb = NULL; - GNUNET_CRYPTO_rsa_signature_free (sig); - return GNUNET_OK; -} - - -/** - * We got a 402 PAYMENT REQUIRED response for the /reserve/withdraw operation. - * Check the signatures on the withdraw transactions in the provided - * history and that the balances add up. We don't do anything directly - * with the information, as the JSON will be returned to the application. - * However, our job is ensuring that the mint followed the protocol, and - * this in particular means checking all of the signatures in the history. - * - * @param wsh operation handle - * @param json reply from the mint - * @return #GNUNET_OK on success, #GNUNET_SYSERR on errors - */ -static int -reserve_withdraw_payment_required (struct TALER_MINT_ReserveWithdrawHandle *wsh, - json_t *json) -{ - struct TALER_Amount balance; - struct TALER_Amount balance_from_history; - struct TALER_Amount requested_amount; - json_t *history; - size_t len; - struct MAJ_Specification spec[] = { - MAJ_spec_amount ("balance", &balance), - MAJ_spec_end - }; - - if (GNUNET_OK != - MAJ_parse_json (json, - spec)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - history = json_object_get (json, - "history"); - if (NULL == history) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - - /* go over transaction history and compute - total incoming and outgoing amounts */ - len = json_array_size (history); - { - struct TALER_MINT_ReserveHistory rhistory[len]; - - if (GNUNET_OK != - parse_reserve_history (history, - &wsh->reserve_pub, - balance.currency, - &balance_from_history, - len, - rhistory)) - { - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - } - - if (0 != - TALER_amount_cmp (&balance_from_history, - &balance)) - { - /* mint cannot add up balances!? */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - /* Compute how much we expected to charge to the reserve */ - if (GNUNET_OK != - TALER_amount_add (&requested_amount, - &wsh->pk->value, - &wsh->pk->fee_withdraw)) - { - /* Overflow here? Very strange, our CPU must be fried... */ - GNUNET_break (0); - return GNUNET_SYSERR; - } - /* Check that funds were really insufficient */ - if (0 >= TALER_amount_cmp (&requested_amount, - &balance)) - { - /* Requested amount is smaller or equal to reported balance, - so this should not have failed. */ - GNUNET_break_op (0); - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - - -/** - * Function called when we're done processing the - * HTTP /reserve/withdraw request. - * - * @param cls the `struct TALER_MINT_ReserveWithdrawHandle` - * @param eh curl handle of the request that finished - */ -static void -handle_reserve_withdraw_finished (void *cls, - CURL *eh) -{ - struct TALER_MINT_ReserveWithdrawHandle *wsh = cls; - long response_code; - json_t *json; - - wsh->job = NULL; - json = MAC_download_get_result (&wsh->db, - eh, - &response_code); - switch (response_code) - { - case 0: - break; - case MHD_HTTP_OK: - if (GNUNET_OK != - reserve_withdraw_ok (wsh, - 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_PAYMENT_REQUIRED: - /* The mint says that the reserve has insufficient funds; - check the signatures in the history... */ - if (GNUNET_OK != - reserve_withdraw_payment_required (wsh, - json)) - { - GNUNET_break_op (0); - response_code = 0; - } - break; - case MHD_HTTP_UNAUTHORIZED: - GNUNET_break (0); - /* 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, the mint basically just says - that it doesn't know this reserve. Can happen if we - query before the wire transfer went through. - We should simply 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; - } - if (NULL != wsh->cb) - wsh->cb (wsh->cb_cls, - response_code, - NULL, - json); - json_decref (json); - TALER_MINT_reserve_withdraw_cancel (wsh); -} - - -/** - * Withdraw a coin from the mint 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 mint the mint handle; the mint must be ready to operate - * @param pk kind of coin to create - * @param reserve_priv private key of the reserve to withdraw from - * @param coin_priv where to store the coin's private key, - * caller must have committed this value to disk before the call (with @a pk) - * @param blinding_key where to store the coin's blinding key - * 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 #GNUNET_OK on success, #GNUNET_SYSERR - * if the inputs are invalid (i.e. denomination key not with this mint). - * In this case, the callback is not called. - */ -struct TALER_MINT_ReserveWithdrawHandle * -TALER_MINT_reserve_withdraw (struct TALER_MINT_Handle *mint, - const struct TALER_MINT_DenomPublicKey *pk, - const struct TALER_ReservePrivateKeyP *reserve_priv, - const struct TALER_CoinSpendPrivateKeyP *coin_priv, - const struct TALER_DenominationBlindingKey *blinding_key, - TALER_MINT_ReserveWithdrawResultCallback res_cb, - void *res_cb_cls) -{ - struct TALER_MINT_ReserveWithdrawHandle *wsh; - struct TALER_WithdrawRequestPS req; - struct TALER_ReserveSignatureP reserve_sig; - struct TALER_CoinSpendPublicKeyP coin_pub; - struct TALER_MINT_Context *ctx; - struct TALER_Amount amount_with_fee; - char *coin_ev; - size_t coin_ev_size; - json_t *withdraw_obj; - CURL *eh; - - wsh = GNUNET_new (struct TALER_MINT_ReserveWithdrawHandle); - wsh->mint = mint; - wsh->cb = res_cb; - wsh->cb_cls = res_cb_cls; - wsh->pk = pk; - - GNUNET_CRYPTO_eddsa_key_get_public (&coin_priv->eddsa_priv, - &coin_pub.eddsa_pub); - GNUNET_CRYPTO_hash (&coin_pub.eddsa_pub, - sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey), - &wsh->c_hash); - coin_ev_size = GNUNET_CRYPTO_rsa_blind (&wsh->c_hash, - blinding_key->rsa_blinding_key, - pk->key.rsa_public_key, - &coin_ev); - GNUNET_CRYPTO_eddsa_key_get_public (&reserve_priv->eddsa_priv, - &wsh->reserve_pub.eddsa_pub); - req.purpose.size = htonl (sizeof (struct TALER_WithdrawRequestPS)); - req.purpose.purpose = htonl (TALER_SIGNATURE_WALLET_RESERVE_WITHDRAW); - req.reserve_pub = wsh->reserve_pub; - if (GNUNET_OK != - TALER_amount_add (&amount_with_fee, - &pk->fee_withdraw, - &pk->value)) - { - /* mint gave us denomination keys that overflow like this!? */ - GNUNET_break_op (0); - GNUNET_free (coin_ev); - GNUNET_free (wsh); - return NULL; - } - TALER_amount_hton (&req.amount_with_fee, - &amount_with_fee); - TALER_amount_hton (&req.withdraw_fee, - &pk->fee_withdraw); - GNUNET_CRYPTO_rsa_public_key_hash (pk->key.rsa_public_key, - &req.h_denomination_pub); - GNUNET_CRYPTO_hash (coin_ev, - coin_ev_size, - &req.h_coin_envelope); - GNUNET_assert (GNUNET_OK == - GNUNET_CRYPTO_eddsa_sign (&reserve_priv->eddsa_priv, - &req.purpose, - &reserve_sig.eddsa_signature)); - withdraw_obj = json_pack ("{s:o, s:o," /* denom_pub and coin_ev */ - " s:o, s:o}",/* reserve_pub and reserve_sig */ - "denom_pub", TALER_json_from_rsa_public_key (pk->key.rsa_public_key), - "coin_ev", TALER_json_from_data (coin_ev, - coin_ev_size), - "reserve_pub", TALER_json_from_data (&wsh->reserve_pub, - sizeof (struct TALER_ReservePublicKeyP)), - "reserve_sig", TALER_json_from_data (&reserve_sig, - sizeof (reserve_sig))); - GNUNET_free (coin_ev); - - wsh->blinding_key = blinding_key; - wsh->url = MAH_path_to_url (mint, "/reserve/withdraw"); - - eh = curl_easy_init (); - GNUNET_assert (NULL != (wsh->json_enc = - json_dumps (withdraw_obj, - JSON_COMPACT))); - json_decref (withdraw_obj); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_URL, - wsh->url)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDS, - wsh->json_enc)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_POSTFIELDSIZE, - strlen (wsh->json_enc))); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEFUNCTION, - &MAC_download_cb)); - GNUNET_assert (CURLE_OK == - curl_easy_setopt (eh, - CURLOPT_WRITEDATA, - &wsh->db)); - ctx = MAH_handle_to_context (mint); - wsh->job = MAC_job_add (ctx, - eh, - GNUNET_YES, - &handle_reserve_withdraw_finished, - wsh); - return wsh; -} - - -/** - * Cancel a withdraw status request. This function cannot be used - * on a request handle if a response is already served for it. - * - * @param sign the withdraw sign request handle - */ -void -TALER_MINT_reserve_withdraw_cancel (struct TALER_MINT_ReserveWithdrawHandle *sign) -{ - if (NULL != sign->job) - { - MAC_job_cancel (sign->job); - sign->job = NULL; - } - GNUNET_free_non_null (sign->db.buf); - GNUNET_free (sign->url); - GNUNET_free (sign->json_enc); - GNUNET_free (sign); -} - - -/* end of mint_api_reserve.c */ |