From 54106e63dca71dd983315c1935c5ca391f9fc254 Mon Sep 17 00:00:00 2001 From: Christian Grothoff Date: Sat, 5 Mar 2022 18:18:25 +0100 Subject: add client API for setting global fees --- src/include/taler_exchange_service.h | 64 ++++++- src/lib/Makefile.am | 1 + src/lib/exchange_api_management_set_global_fee.c | 224 +++++++++++++++++++++++ src/lib/exchange_api_management_set_wire_fee.c | 2 +- 4 files changed, 289 insertions(+), 2 deletions(-) create mode 100644 src/lib/exchange_api_management_set_global_fee.c diff --git a/src/include/taler_exchange_service.h b/src/include/taler_exchange_service.h index 00115e12a..48272a6b8 100644 --- a/src/include/taler_exchange_service.h +++ b/src/include/taler_exchange_service.h @@ -3511,7 +3511,7 @@ TALER_EXCHANGE_management_set_wire_fees ( struct GNUNET_TIME_Timestamp validity_end, const struct TALER_WireFeeSet *fees, const struct TALER_MasterSignatureP *master_sig, - TALER_EXCHANGE_ManagementWireEnableCallback cb, + TALER_EXCHANGE_ManagementSetWireFeeCallback cb, void *cb_cls); @@ -3525,6 +3525,68 @@ TALER_EXCHANGE_management_set_wire_fees_cancel ( struct TALER_EXCHANGE_ManagementSetWireFeeHandle *swfh); +/** + * Function called with information about the global fee setting operation result. + * + * @param cls closure + * @param hr HTTP response data + */ +typedef void +(*TALER_EXCHANGE_ManagementSetGlobalFeeCallback) ( + void *cls, + const struct TALER_EXCHANGE_HttpResponse *hr); + + +/** + * @brief Handle for a POST /management/global-fees request. + */ +struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle; + + +/** + * Inform the exchange about global fees. + * + * @param ctx the context + * @param exchange_base_url HTTP base URL for the exchange + * @param validity_start start date for the provided wire fees + * @param validity_end end date for the provided wire fees + * @param fees the wire fees for this time period + * @param purse_timeout when do purses time out + * @param kyc_timeout when do reserves without KYC time out + * @param history_expiration how long are account histories preserved + * @param purse_account_limit how many purses are free per account + * @param master_sig signature affirming the wire fees; + * of purpose #TALER_SIGNATURE_MASTER_GLOBAL_FEES + * @param cb function to call with the exchange's result + * @param cb_cls closure for @a cb + * @return the request handle; NULL upon error + */ +struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle * +TALER_EXCHANGE_management_set_global_fees ( + struct GNUNET_CURL_Context *ctx, + const char *exchange_base_url, + struct GNUNET_TIME_Timestamp validity_start, + struct GNUNET_TIME_Timestamp validity_end, + const struct TALER_GlobalFeeSet *fees, + struct GNUNET_TIME_Relative purse_timeout, + struct GNUNET_TIME_Relative kyc_timeout, + struct GNUNET_TIME_Relative history_expiration, + uint32_t purse_account_limit, + const struct TALER_MasterSignatureP *master_sig, + TALER_EXCHANGE_ManagementSetGlobalFeeCallback cb, + void *cb_cls); + + +/** + * Cancel #TALER_EXCHANGE_management_enable_wire() operation. + * + * @param swfh handle of the operation to cancel + */ +void +TALER_EXCHANGE_management_set_global_fees_cancel ( + struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh); + + /** * Function called with information about the POST * /auditor/$AUDITOR_PUB/$H_DENOM_PUB operation result. diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am index 17ad7937d..7d49f53cd 100644 --- a/src/lib/Makefile.am +++ b/src/lib/Makefile.am @@ -40,6 +40,7 @@ libtalerexchange_la_SOURCES = \ exchange_api_management_post_extensions.c \ exchange_api_management_revoke_denomination_key.c \ exchange_api_management_revoke_signing_key.c \ + exchange_api_management_set_global_fee.c \ exchange_api_management_set_wire_fee.c \ exchange_api_management_wire_disable.c \ exchange_api_management_wire_enable.c \ diff --git a/src/lib/exchange_api_management_set_global_fee.c b/src/lib/exchange_api_management_set_global_fee.c new file mode 100644 index 000000000..a79dddc9d --- /dev/null +++ b/src/lib/exchange_api_management_set_global_fee.c @@ -0,0 +1,224 @@ +/* + This file is part of TALER + Copyright (C) 2020-2022 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 + +*/ +/** + * @file lib/exchange_api_management_set_global_fee.c + * @brief functions to set global fees at an exchange + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_json_lib.h" +#include +#include "exchange_api_curl_defaults.h" +#include "taler_exchange_service.h" +#include "taler_signatures.h" +#include "taler_curl_lib.h" +#include "taler_json_lib.h" + + +struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle +{ + + /** + * The url for this request. + */ + char *url; + + /** + * Minor context that holds body and headers. + */ + struct TALER_CURL_PostContext post_ctx; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Function to call with the result. + */ + TALER_EXCHANGE_ManagementSetGlobalFeeCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Reference to the execution context. + */ + struct GNUNET_CURL_Context *ctx; +}; + + +/** + * Function called when we're done processing the + * HTTP /management/global request. + * + * @param cls the `struct TALER_EXCHANGE_ManagementAuditorEnableHandle *` + * @param response_code HTTP response code, 0 on error + * @param response response body, NULL if not in JSON + */ +static void +handle_set_global_fee_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh = cls; + const json_t *json = response; + struct TALER_EXCHANGE_HttpResponse hr = { + .http_status = (unsigned int) response_code, + .reply = json + }; + + sgfh->job = NULL; + switch (response_code) + { + case MHD_HTTP_NO_CONTENT: + break; + case MHD_HTTP_FORBIDDEN: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + break; + case MHD_HTTP_CONFLICT: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + break; + case MHD_HTTP_PRECONDITION_FAILED: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + break; + default: + /* unexpected response code */ + GNUNET_break_op (0); + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected response code %u/%d for exchange management set global fee\n", + (unsigned int) response_code, + (int) hr.ec); + break; + } + if (NULL != sgfh->cb) + { + sgfh->cb (sgfh->cb_cls, + &hr); + sgfh->cb = NULL; + } + TALER_EXCHANGE_management_set_global_fees_cancel (sgfh); +} + + +struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle * +TALER_EXCHANGE_management_set_global_fees ( + struct GNUNET_CURL_Context *ctx, + const char *exchange_base_url, + struct GNUNET_TIME_Timestamp validity_start, + struct GNUNET_TIME_Timestamp validity_end, + const struct TALER_GlobalFeeSet *fees, + struct GNUNET_TIME_Relative purse_timeout, + struct GNUNET_TIME_Relative kyc_timeout, + struct GNUNET_TIME_Relative history_expiration, + uint32_t purse_account_limit, + const struct TALER_MasterSignatureP *master_sig, + TALER_EXCHANGE_ManagementSetGlobalFeeCallback cb, + void *cb_cls) +{ + struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh; + CURL *eh; + json_t *body; + + sgfh = GNUNET_new (struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle); + sgfh->cb = cb; + sgfh->cb_cls = cb_cls; + sgfh->ctx = ctx; + sgfh->url = TALER_url_join (exchange_base_url, + "management/global-fee", + NULL); + if (NULL == sgfh->url) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Could not construct request URL.\n"); + GNUNET_free (sgfh); + return NULL; + } + body = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_data_auto ("master_sig", + master_sig), + GNUNET_JSON_pack_timestamp ("fee_start", + validity_start), + GNUNET_JSON_pack_timestamp ("fee_end", + validity_end), + TALER_JSON_pack_amount ("history_fee", + &fees->history), + TALER_JSON_pack_amount ("kyc_fee", + &fees->kyc), + TALER_JSON_pack_amount ("account_fee", + &fees->account), + TALER_JSON_pack_amount ("purse_fee", + &fees->purse), + GNUNET_JSON_pack_time_rel ("purse_timeout", + purse_timeout), + GNUNET_JSON_pack_time_rel ("kyc_timeout", + kyc_timeout), + GNUNET_JSON_pack_time_rel ("history_expiration", + history_expiration), + GNUNET_JSON_pack_uint64 ("purse_account_limit", + purse_account_limit)); + eh = TALER_EXCHANGE_curl_easy_get_ (sgfh->url); + GNUNET_assert (NULL != eh); + if (GNUNET_OK != + TALER_curl_easy_post (&sgfh->post_ctx, + eh, + body)) + { + GNUNET_break (0); + json_decref (body); + GNUNET_free (sgfh->url); + GNUNET_free (eh); + return NULL; + } + json_decref (body); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Requesting URL '%s'\n", + sgfh->url); + sgfh->job = GNUNET_CURL_job_add2 (ctx, + eh, + sgfh->post_ctx.headers, + &handle_set_global_fee_finished, + sgfh); + if (NULL == sgfh->job) + { + TALER_EXCHANGE_management_set_global_fees_cancel (sgfh); + return NULL; + } + return sgfh; +} + + +void +TALER_EXCHANGE_management_set_global_fees_cancel ( + struct TALER_EXCHANGE_ManagementSetGlobalFeeHandle *sgfh) +{ + if (NULL != sgfh->job) + { + GNUNET_CURL_job_cancel (sgfh->job); + sgfh->job = NULL; + } + TALER_curl_easy_post_finished (&sgfh->post_ctx); + GNUNET_free (sgfh->url); + GNUNET_free (sgfh); +} diff --git a/src/lib/exchange_api_management_set_wire_fee.c b/src/lib/exchange_api_management_set_wire_fee.c index cd32a4833..84c6fe909 100644 --- a/src/lib/exchange_api_management_set_wire_fee.c +++ b/src/lib/exchange_api_management_set_wire_fee.c @@ -131,7 +131,7 @@ TALER_EXCHANGE_management_set_wire_fees ( struct GNUNET_TIME_Timestamp validity_end, const struct TALER_WireFeeSet *fees, const struct TALER_MasterSignatureP *master_sig, - TALER_EXCHANGE_ManagementWireEnableCallback cb, + TALER_EXCHANGE_ManagementSetWireFeeCallback cb, void *cb_cls) { struct TALER_EXCHANGE_ManagementSetWireFeeHandle *swfh; 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