diff options
author | Christian Grothoff <grothoff@gnunet.org> | 2022-03-20 09:44:42 +0100 |
---|---|---|
committer | Christian Grothoff <grothoff@gnunet.org> | 2022-03-20 09:44:42 +0100 |
commit | dee45bf02284716d5dea18e94193d74e64f7e5bf (patch) | |
tree | d650ece27dd5fe51ef55417eba54538618d34021 /src/lib | |
parent | 1bb5a77c8da3e460b45b3faa49ed10ab6ae9190d (diff) | |
download | exchange-dee45bf02284716d5dea18e94193d74e64f7e5bf.tar.xz |
return new global fees from /keys
Diffstat (limited to 'src/lib')
-rw-r--r-- | src/lib/exchange_api_handle.c | 111 | ||||
-rw-r--r-- | src/lib/exchange_api_reserves_history.c | 368 | ||||
-rw-r--r-- | src/lib/exchange_api_reserves_status.c | 364 |
3 files changed, 837 insertions, 6 deletions
diff --git a/src/lib/exchange_api_handle.c b/src/lib/exchange_api_handle.c index a9713a45a..f7e877913 100644 --- a/src/lib/exchange_api_handle.c +++ b/src/lib/exchange_api_handle.c @@ -1,6 +1,6 @@ /* This file is part of TALER - Copyright (C) 2014-2021 Taler Systems SA + Copyright (C) 2014-2022 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 @@ -40,7 +40,7 @@ * Which version of the Taler protocol is implemented * by this library? Used to determine compatibility. */ -#define EXCHANGE_PROTOCOL_CURRENT 12 +#define EXCHANGE_PROTOCOL_CURRENT 13 /** * How many versions are we backwards compatible with? @@ -255,7 +255,7 @@ free_keys_request (struct KeysRequest *kr) */ static enum GNUNET_GenericReturnValue parse_json_signkey (struct TALER_EXCHANGE_SigningPublicKey *sign_key, - int check_sigs, + bool check_sigs, json_t *sign_key_obj, const struct TALER_MasterPublicKeyP *master_key) { @@ -317,7 +317,7 @@ parse_json_signkey (struct TALER_EXCHANGE_SigningPublicKey *sign_key, static enum GNUNET_GenericReturnValue parse_json_denomkey (const char *currency, struct TALER_EXCHANGE_DenomPublicKey *denom_key, - int check_sigs, + bool check_sigs, json_t *denom_key_obj, struct TALER_MasterPublicKeyP *master_key, struct GNUNET_HashContext *hash_context) @@ -394,7 +394,7 @@ EXITIF_exit: */ static enum GNUNET_GenericReturnValue parse_json_auditor (struct TALER_EXCHANGE_AuditorInformation *auditor, - int check_sigs, + bool check_sigs, json_t *auditor_obj, const struct TALER_EXCHANGE_Keys *key_data) { @@ -505,6 +505,79 @@ parse_json_auditor (struct TALER_EXCHANGE_AuditorInformation *auditor, /** + * Parse a exchange's global fee information encoded in JSON. + * + * @param[out] gf where to return the result + * @param check_sigs should we check signatures + * @param[in] fee_obj json to parse + * @param key_data already parsed information about the exchange + * @return #GNUNET_OK if all is fine, #GNUNET_SYSERR if the signature is + * invalid or the json malformed. + */ +static enum GNUNET_GenericReturnValue +parse_global_fee (struct TALER_EXCHANGE_GlobalFee *gf, + bool check_sigs, + json_t *fee_obj, + const struct TALER_EXCHANGE_Keys *key_data) +{ + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_timestamp ("start_time", + &gf->start_date), + GNUNET_JSON_spec_timestamp ("end_time", + &gf->end_date), + GNUNET_JSON_spec_relative_time ("purse_timeout", + &gf->purse_timeout), + GNUNET_JSON_spec_relative_time ("kyc_timeout", + &gf->kyc_timeout), + GNUNET_JSON_spec_relative_time ("history_expiration", + &gf->history_expiration), + GNUNET_JSON_spec_uint32 ("purse_account_limit", + &gf->purse_account_limit), + TALER_JSON_SPEC_GLOBAL_FEES (key_data->currency, + &gf->fees), + GNUNET_JSON_spec_fixed_auto ("master_sig", + &gf->master_sig), + GNUNET_JSON_spec_end () + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (fee_obj, + spec, + NULL, NULL)) + { + GNUNET_break_op (0); +#if DEBUG + json_dumpf (fee_obj, + stderr, + JSON_INDENT (2)); +#endif + return GNUNET_SYSERR; + } + if (check_sigs) + { + if (GNUNET_OK != + TALER_exchange_offline_global_fee_verify ( + gf->start_date, + gf->end_date, + &gf->fees, + gf->purse_timeout, + gf->kyc_timeout, + gf->history_expiration, + gf->purse_account_limit, + &key_data->master_pub, + &gf->master_sig)) + { + GNUNET_break_op (0); + GNUNET_JSON_parse_free (spec); + return GNUNET_SYSERR; + } + } + GNUNET_JSON_parse_free (spec); + return GNUNET_OK; +} + + +/** * Function called with information about the auditor. Marks an * auditor as 'up'. * @@ -691,7 +764,7 @@ decode_keys_json (const json_t *resp_obj, stderr, JSON_INDENT (2)); #endif - /* check the version */ + /* check the version first */ { const char *ver; unsigned int age; @@ -762,6 +835,32 @@ decode_keys_json (const json_t *resp_obj, hash_context_restricted = GNUNET_CRYPTO_hash_context_start (); } + /* parse the global fees */ + { + json_t *global_fees; + json_t *global_fee; + unsigned int index; + + EXITIF (NULL == (global_fees = + json_object_get (resp_obj, + "global_fees"))); + EXITIF (! json_is_array (global_fees)); + if (0 != (key_data->num_global_fees = + json_array_size (global_fees))) + { + key_data->global_fees + = GNUNET_new_array (key_data->num_global_fees, + struct TALER_EXCHANGE_GlobalFee); + json_array_foreach (global_fees, index, global_fee) { + EXITIF (GNUNET_SYSERR == + parse_global_fee (&key_data->global_fees[index], + check_sig, + global_fee, + key_data)); + } + } + } + /* parse the signing keys */ { json_t *sign_keys_array; diff --git a/src/lib/exchange_api_reserves_history.c b/src/lib/exchange_api_reserves_history.c new file mode 100644 index 000000000..f7191b2ad --- /dev/null +++ b/src/lib/exchange_api_reserves_history.c @@ -0,0 +1,368 @@ +/* + This file is part of TALER + Copyright (C) 2014-2022 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_reserves_history.c + * @brief Implementation of the POST /reserves/$RESERVE_PUB/history requests + * @author Christian Grothoff + */ +#include "platform.h" +#include <jansson.h> +#include <microhttpd.h> /* just for HTTP history codes */ +#include <gnunet/gnunet_util_lib.h> +#include <gnunet/gnunet_json_lib.h> +#include <gnunet/gnunet_curl_lib.h> +#include "taler_exchange_service.h" +#include "taler_json_lib.h" +#include "exchange_api_handle.h" +#include "taler_signatures.h" +#include "exchange_api_curl_defaults.h" + + +/** + * @brief A /reserves/$RID/history Handle + */ +struct TALER_EXCHANGE_ReservesHistoryHandle +{ + + /** + * The connection to exchange this request handle will use + */ + struct TALER_EXCHANGE_Handle *exchange; + + /** + * The url for this request. + */ + char *url; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Context for #TEH_curl_easy_post(). Keeps the data that must + * persist for Curl to make the upload. + */ + struct TALER_CURL_PostContext post_ctx; + + /** + * Function to call with the result. + */ + TALER_EXCHANGE_ReservesHistoryCallback cb; + + /** + * Public key of the reserve we are querying. + */ + struct TALER_ReservePublicKeyP reserve_pub; + + /** + * Closure for @a cb. + */ + void *cb_cls; + +}; + + +/** + * We received an #MHD_HTTP_OK history code. Handle the JSON + * response. + * + * @param rgh handle of the request + * @param j JSON response + * @return #GNUNET_OK on success + */ +static enum GNUNET_GenericReturnValue +handle_reserves_history_ok (struct TALER_EXCHANGE_ReservesHistoryHandle *rgh, + const json_t *j) +{ + json_t *history; + unsigned int len; + bool kyc_ok; + bool kyc_required; + struct TALER_Amount balance; + struct TALER_Amount balance_from_history; + struct GNUNET_JSON_Specification spec[] = { + TALER_JSON_spec_amount_any ("balance", + &balance), + GNUNET_JSON_spec_bool ("kyc_passed", + &kyc_ok), + GNUNET_JSON_spec_bool ("kyc_required", + &kyc_required), + GNUNET_JSON_spec_json ("history", + &history), + GNUNET_JSON_spec_end () + }; + struct TALER_EXCHANGE_HttpResponse hr = { + .reply = j, + .http_history = MHD_HTTP_OK + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (j, + spec, + NULL, + NULL)) + { + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + len = json_array_size (history); + { + struct TALER_EXCHANGE_ReserveHistory *rhistory; + + rhistory = GNUNET_new_array (len, + struct TALER_EXCHANGE_ReserveHistory); + if (GNUNET_OK != + TALER_EXCHANGE_parse_reserve_history (rgh->exchange, + history, + &rgh->reserve_pub, + balance.currency, + &balance_from_history, + len, + rhistory)) + { + GNUNET_break_op (0); + TALER_EXCHANGE_free_reserve_history (rhistory, + len); + GNUNET_JSON_parse_free (spec); + return GNUNET_SYSERR; + } + if (0 != + TALER_amount_cmp (&balance_from_history, + &balance)) + { + /* exchange cannot add up balances!? */ + GNUNET_break_op (0); + TALER_EXCHANGE_free_reserve_history (rhistory, + len); + GNUNET_JSON_parse_free (spec); + return GNUNET_SYSERR; + } + if (NULL != rgh->cb) + { + rgh->cb (rgh->cb_cls, + &hr, + &balance, + len, + rhistory); + rgh->cb = NULL; + } + TALER_EXCHANGE_free_reserve_history (rhistory, + len); + } + GNUNET_JSON_parse_free (spec); + return GNUNET_OK; +} + + +/** + * Function called when we're done processing the + * HTTP /reserves/$RID/history request. + * + * @param cls the `struct TALER_EXCHANGE_ReservesHistoryHandle` + * @param response_code HTTP response code, 0 on error + * @param response parsed JSON result, NULL on error + */ +static void +handle_reserves_history_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_EXCHANGE_ReservesHistoryHandle *rgh = cls; + const json_t *j = response; + struct TALER_EXCHANGE_HttpResponse hr = { + .reply = j, + .http_history = (unsigned int) response_code + }; + + rgh->job = NULL; + switch (response_code) + { + case 0: + hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; + break; + case MHD_HTTP_OK: + if (GNUNET_OK != + handle_reserves_history_ok (rgh, + j)) + { + hr.http_history = 0; + hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED; + } + break; + case MHD_HTTP_BAD_REQUEST: + /* This should never happen, either us or the exchange is buggy + (or API version conflict); just pass JSON reply to the application */ + GNUNET_break (0); + hr.ec = TALER_JSON_history_error_code (j); + hr.hint = TALER_JSON_history_error_hint (j); + break; + case MHD_HTTP_FORBIDDEN: + /* This should never happen, either us or the exchange is buggy + (or API version conflict); just pass JSON reply to the application */ + GNUNET_break (0); + hr.ec = TALER_JSON_history_error_code (j); + hr.hint = TALER_JSON_history_error_hint (j); + break; + case MHD_HTTP_NOT_FOUND: + /* Nothing really to verify, this should never + happen, we should pass the JSON reply to the application */ + hr.ec = TALER_JSON_history_error_code (j); + hr.hint = TALER_JSON_history_error_hint (j); + break; + case MHD_HTTP_INTERNAL_SERVER_ERROR: + /* Server had an internal issue; we should retry, but this API + leaves this to the application */ + hr.ec = TALER_JSON_history_error_code (j); + hr.hint = TALER_JSON_history_error_hint (j); + break; + default: + /* unexpected response code */ + GNUNET_break_op (0); + hr.ec = TALER_JSON_history_error_code (j); + hr.hint = TALER_JSON_history_error_hint (j); + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected response code %u/%d for reserves history\n", + (unsigned int) response_code, + (int) hr.ec); + break; + } + if (NULL != rgh->cb) + { + rgh->cb (rgh->cb_cls, + &hr, + NULL, + 0, + NULL); + rgh->cb = NULL; + } + TALER_EXCHANGE_reserves_history_cancel (rgh); +} + + +struct TALER_EXCHANGE_ReservesHistoryHandle * +TALER_EXCHANGE_reserves_history ( + struct TALER_EXCHANGE_Handle *exchange, + const struct TALER_ReservePrivateKeyP *reserve_priv, + TALER_EXCHANGE_ReservesHistoryCallback cb, + void *cb_cls) +{ + struct TALER_EXCHANGE_ReservesHistoryHandle *rgh; + struct GNUNET_CURL_Context *ctx; + CURL *eh; + char arg_str[sizeof (struct TALER_ReservePublicKeyP) * 2 + 32]; + const struct TALER_Amount *history_fee; + const struct TALER_EXCHANGE_Keys *keys; + struct GNUNET_TIME_Timestamp ts + = GNUNET_TIME_timestamp_get (); + + if (GNUNET_YES != + TEAH_handle_is_ready (exchange)) + { + GNUNET_break (0); + return NULL; + } + keys = TALER_EXCHANGE_get_keys (exchange); + // FIXME: extract history_fee from keys! + history_fee = FIXME; + rgh = GNUNET_new (struct TALER_EXCHANGE_ReservesHistoryHandle); + rgh->exchange = exchange; + rgh->cb = cb; + rgh->cb_cls = cb_cls; + GNUNET_CRYPTO_eddsa_key_get_public (&reserve_priv->eddsa_priv, + &rgh->reserve_pub.eddsa_pub); + { + char pub_str[sizeof (struct TALER_ReservePublicKeyP) * 2]; + char *end; + + end = GNUNET_STRINGS_data_to_string ( + &rgh->reserve_pub, + sizeof (rgh->reserve_pub), + pub_str, + sizeof (pub_str)); + *end = '\0'; + GNUNET_snprintf (arg_str, + sizeof (arg_str), + "/reserves/%s/history", + pub_str); + } + rgh->url = TEAH_path_to_url (exchange, + arg_str); + if (NULL == rgh->url) + { + GNUNET_free (rgh); + return NULL; + } + eh = TALER_EXCHANGE_curl_easy_history_ (rgh->url); + if (NULL == eh) + { + GNUNET_break (0); + GNUNET_free (rgh->url); + GNUNET_free (rgh); + return NULL; + } + TALER_wallet_reserve_history_sign (ts, + history_fee, + reserve_priv, + &reserve_sig); + { + json_t *history_obj = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_timestamp ("request_timestamp", + &ts), + GNUNET_JSON_pack_data_auto ("reserve_sig", + &reserve_sig)); + + if (GNUNET_OK != + TALER_curl_easy_post (&rgh->post_ctx, + eh, + history_obj)) + ) + { + GNUNET_break (0); + curl_easy_cleanup (eh); + json_decref (history_obj); + GNUNET_free (rgh->url); + GNUNET_free (rgh); + return NULL; + } + json_decref (history_obj); + } + ctx = TEAH_handle_to_context (exchange); + rgh->job = GNUNET_CURL_job_add (ctx, + eh, + &handle_reserves_history_finished, + rgh); + return rgh; +} + + +void +TALER_EXCHANGE_reserves_history_cancel ( + struct TALER_EXCHANGE_ReservesHistoryHandle *rgh) +{ + if (NULL != rgh->job) + { + GNUNET_CURL_job_cancel (rgh->job); + rgh->job = NULL; + } + TALER_curl_easy_post_finished (&rgh->post_ctx); + GNUNET_free (rgh->url); + GNUNET_free (rgh); +} + + +/* end of exchange_api_reserves_history.c */ diff --git a/src/lib/exchange_api_reserves_status.c b/src/lib/exchange_api_reserves_status.c new file mode 100644 index 000000000..2758a3a28 --- /dev/null +++ b/src/lib/exchange_api_reserves_status.c @@ -0,0 +1,364 @@ +/* + This file is part of TALER + Copyright (C) 2014-2022 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_reserves_status.c + * @brief Implementation of the POST /reserves/$RESERVE_PUB/status requests + * @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 /reserves/$RID/status Handle + */ +struct TALER_EXCHANGE_ReservesStatusHandle +{ + + /** + * The connection to exchange this request handle will use + */ + struct TALER_EXCHANGE_Handle *exchange; + + /** + * The url for this request. + */ + char *url; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Context for #TEH_curl_easy_post(). Keeps the data that must + * persist for Curl to make the upload. + */ + struct TALER_CURL_PostContext post_ctx; + + /** + * Function to call with the result. + */ + TALER_EXCHANGE_ReservesStatusCallback cb; + + /** + * Public key of the reserve we are querying. + */ + struct TALER_ReservePublicKeyP reserve_pub; + + /** + * Closure for @a cb. + */ + void *cb_cls; + +}; + + +/** + * We received an #MHD_HTTP_OK status code. Handle the JSON + * response. + * + * @param rgh handle of the request + * @param j JSON response + * @return #GNUNET_OK on success + */ +static enum GNUNET_GenericReturnValue +handle_reserves_status_ok (struct TALER_EXCHANGE_ReservesStatusHandle *rgh, + const json_t *j) +{ + json_t *history; + unsigned int len; + bool kyc_ok; + bool kyc_required; + struct TALER_Amount balance; + struct TALER_Amount balance_from_history; + struct GNUNET_JSON_Specification spec[] = { + TALER_JSON_spec_amount_any ("balance", + &balance), + GNUNET_JSON_spec_bool ("kyc_passed", + &kyc_ok), + GNUNET_JSON_spec_bool ("kyc_required", + &kyc_required), + GNUNET_JSON_spec_json ("history", + &history), + GNUNET_JSON_spec_end () + }; + struct TALER_EXCHANGE_HttpResponse hr = { + .reply = j, + .http_status = MHD_HTTP_OK + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (j, + spec, + NULL, + NULL)) + { + GNUNET_break_op (0); + return GNUNET_SYSERR; + } + len = json_array_size (history); + { + struct TALER_EXCHANGE_ReserveHistory *rhistory; + + rhistory = GNUNET_new_array (len, + struct TALER_EXCHANGE_ReserveHistory); + if (GNUNET_OK != + TALER_EXCHANGE_parse_reserve_history (rgh->exchange, + history, + &rgh->reserve_pub, + balance.currency, + &balance_from_history, + len, + rhistory)) + { + GNUNET_break_op (0); + TALER_EXCHANGE_free_reserve_history (rhistory, + len); + GNUNET_JSON_parse_free (spec); + return GNUNET_SYSERR; + } + // FIXME: status history is allowed to be + // partial, so this is NOT ok... + if (0 != + TALER_amount_cmp (&balance_from_history, + &balance)) + { + /* exchange cannot add up balances!? */ + GNUNET_break_op (0); + TALER_EXCHANGE_free_reserve_history (rhistory, + len); + GNUNET_JSON_parse_free (spec); + return GNUNET_SYSERR; + } + if (NULL != rgh->cb) + { + rgh->cb (rgh->cb_cls, + &hr, + &balance, + len, + rhistory); + rgh->cb = NULL; + } + TALER_EXCHANGE_free_reserve_history (rhistory, + len); + } + GNUNET_JSON_parse_free (spec); + return GNUNET_OK; +} + + +/** + * Function called when we're done processing the + * HTTP /reserves/$RID/status request. + * + * @param cls the `struct TALER_EXCHANGE_ReservesStatusHandle` + * @param response_code HTTP response code, 0 on error + * @param response parsed JSON result, NULL on error + */ +static void +handle_reserves_status_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_EXCHANGE_ReservesStatusHandle *rgh = cls; + const json_t *j = response; + struct TALER_EXCHANGE_HttpResponse hr = { + .reply = j, + .http_status = (unsigned int) response_code + }; + + rgh->job = NULL; + switch (response_code) + { + case 0: + hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; + break; + case MHD_HTTP_OK: + if (GNUNET_OK != + handle_reserves_status_ok (rgh, + j)) + { + hr.http_status = 0; + hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED; + } + break; + case MHD_HTTP_BAD_REQUEST: + /* This should never happen, either us or the exchange is buggy + (or API version conflict); just pass JSON reply to the application */ + GNUNET_break (0); + hr.ec = TALER_JSON_status_error_code (j); + hr.hint = TALER_JSON_status_error_hint (j); + break; + case MHD_HTTP_FORBIDDEN: + /* This should never happen, either us or the exchange is buggy + (or API version conflict); just pass JSON reply to the application */ + GNUNET_break (0); + hr.ec = TALER_JSON_status_error_code (j); + hr.hint = TALER_JSON_status_error_hint (j); + break; + case MHD_HTTP_NOT_FOUND: + /* Nothing really to verify, this should never + happen, we should pass the JSON reply to the application */ + hr.ec = TALER_JSON_status_error_code (j); + hr.hint = TALER_JSON_status_error_hint (j); + break; + case MHD_HTTP_INTERNAL_SERVER_ERROR: + /* Server had an internal issue; we should retry, but this API + leaves this to the application */ + hr.ec = TALER_JSON_status_error_code (j); + hr.hint = TALER_JSON_status_error_hint (j); + break; + default: + /* unexpected response code */ + GNUNET_break_op (0); + hr.ec = TALER_JSON_status_error_code (j); + hr.hint = TALER_JSON_status_error_hint (j); + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected response code %u/%d for reserves status\n", + (unsigned int) response_code, + (int) hr.ec); + break; + } + if (NULL != rgh->cb) + { + rgh->cb (rgh->cb_cls, + &hr, + NULL, + 0, + NULL); + rgh->cb = NULL; + } + TALER_EXCHANGE_reserves_status_cancel (rgh); +} + + +struct TALER_EXCHANGE_ReservesStatusHandle * +TALER_EXCHANGE_reserves_status ( + struct TALER_EXCHANGE_Handle *exchange, + const struct TALER_ReservePrivateKeyP *reserve_priv, + TALER_EXCHANGE_ReservesStatusCallback cb, + void *cb_cls) +{ + struct TALER_EXCHANGE_ReservesStatusHandle *rgh; + struct GNUNET_CURL_Context *ctx; + CURL *eh; + char arg_str[sizeof (struct TALER_ReservePublicKeyP) * 2 + 32]; + struct GNUNET_TIME_Timestamp ts + = GNUNET_TIME_timestamp_get (); + + if (GNUNET_YES != + TEAH_handle_is_ready (exchange)) + { + GNUNET_break (0); + return NULL; + } + rgh = GNUNET_new (struct TALER_EXCHANGE_ReservesStatusHandle); + rgh->exchange = exchange; + rgh->cb = cb; + rgh->cb_cls = cb_cls; + GNUNET_CRYPTO_eddsa_key_get_public (&reserve_priv->eddsa_priv, + &rgh->reserve_pub.eddsa_pub); + { + char pub_str[sizeof (struct TALER_ReservePublicKeyP) * 2]; + char *end; + + end = GNUNET_STRINGS_data_to_string ( + &rgh->reserve_pub, + sizeof (rgh->reserve_pub), + pub_str, + sizeof (pub_str)); + *end = '\0'; + GNUNET_snprintf (arg_str, + sizeof (arg_str), + "/reserves/%s/status", + pub_str); + } + rgh->url = TEAH_path_to_url (exchange, + arg_str); + if (NULL == rgh->url) + { + GNUNET_free (rgh); + return NULL; + } + eh = TALER_EXCHANGE_curl_easy_status_ (rgh->url); + if (NULL == eh) + { + GNUNET_break (0); + GNUNET_free (rgh->url); + GNUNET_free (rgh); + return NULL; + } + TALER_wallet_reserve_status_sign (ts, + reserve_priv, + &reserve_sig); + { + json_t *status_obj = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_timestamp ("request_timestamp", + &ts), + GNUNET_JSON_pack_data_auto ("reserve_sig", + &reserve_sig)); + + if (GNUNET_OK != + TALER_curl_easy_post (&rgh->post_ctx, + eh, + status_obj)) + ) + { + GNUNET_break (0); + curl_easy_cleanup (eh); + json_decref (status_obj); + GNUNET_free (rgh->url); + GNUNET_free (rgh); + return NULL; + } + json_decref (status_obj); + } + ctx = TEAH_handle_to_context (exchange); + rgh->job = GNUNET_CURL_job_add (ctx, + eh, + &handle_reserves_status_finished, + rgh); + return rgh; +} + + +void +TALER_EXCHANGE_reserves_status_cancel ( + struct TALER_EXCHANGE_ReservesStatusHandle *rgh) +{ + if (NULL != rgh->job) + { + GNUNET_CURL_job_cancel (rgh->job); + rgh->job = NULL; + } + TALER_curl_easy_post_finished (&rgh->post_ctx); + GNUNET_free (rgh->url); + GNUNET_free (rgh); +} + + +/* end of exchange_api_reserves_status.c */ |