From 1b23857f2cb56f4aa95a07d7c52bd48abc20b73b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=96zg=C3=BCr=20Kesim?= Date: Thu, 23 Dec 2021 15:15:33 +0100 Subject: [age restriction] progress 8/n More work towards support for extensions and age restriction - updated gana - added handler for DB-Event - added TEH_extensions_init() and _done() - added global for age restriction - added stub for post handler - added SQL-table for extension metadata - added enum type for extensions and other data structures Also: - fixed some warnings -Wmaybe-unitialized --- src/lib/exchange_api_management_post_extensions.c | 251 ++++++++++++++++++++++ 1 file changed, 251 insertions(+) create mode 100644 src/lib/exchange_api_management_post_extensions.c (limited to 'src/lib/exchange_api_management_post_extensions.c') diff --git a/src/lib/exchange_api_management_post_extensions.c b/src/lib/exchange_api_management_post_extensions.c new file mode 100644 index 000000000..7f6349113 --- /dev/null +++ b/src/lib/exchange_api_management_post_extensions.c @@ -0,0 +1,251 @@ +/* + This file is part of TALER + Copyright (C) 2015-2021 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_post_extensions.c + * @brief functions to handle the settings for extensions (p2p and age restriction) + * @author Özgür Kesim + */ +#include "platform.h" +#include "taler_json_lib.h" +#include +#include "taler_extensions.h" +#include "taler_exchange_service.h" +#include "taler_signatures.h" +#include "taler_curl_lib.h" +#include "taler_json_lib.h" + + +/** + * @brief Handle for a POST /management/extensions request. + */ +struct TALER_EXCHANGE_ManagementPostExtensionsHandle +{ + + /** + * 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_ManagementPostExtensionsCallback 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 POST /management/extensions request. + * + * @param cls the `struct TALER_EXCHANGE_ManagementPostExtensionsHandle *` + * @param response_code HTTP response code, 0 on error + * @param response response body, NULL if not in JSON + */ +static void +handle_post_extensions_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_EXCHANGE_ManagementPostExtensionsHandle *ph = cls; + const json_t *json = response; + struct TALER_EXCHANGE_HttpResponse hr = { + .http_status = (unsigned int) response_code, + .reply = json + }; + + ph->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_NOT_FOUND: + 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 post extensions\n", + (unsigned int) response_code, + (int) hr.ec); + break; + } + if (NULL != ph->cb) + { + ph->cb (ph->cb_cls, + &hr); + ph->cb = NULL; + } + TALER_EXCHANGE_post_management_extensions_cancel (ph); +} + + +struct TALER_EXCHANGE_ManagementPostExtensionsHandle * +TALER_EXCHANGE_management_post_extensions ( + struct GNUNET_CURL_Context *ctx, + const char *url, + const struct TALER_EXCHANGE_ManagementPostExtensionsData *pkd, + TALER_EXCHANGE_ManagementPostKeysCallback cb, + void *cb_cls) +{ + struct TALER_EXCHANGE_ManagementPostExtensionsHandle *ph; + // FIXME-oec: TODO! + CURL *eh = NULL; + json_t *body; + json_t *extensions = NULL; + json_t *extension_sigs = NULL; + + ph = GNUNET_new (struct TALER_EXCHANGE_ManagementPostExtensionsHandle); + ph->cb = cb; + ph->cb_cls = cb_cls; + ph->ctx = ctx; + ph->url = TALER_url_join (url, + "management/extensions", + NULL); + if (NULL == ph->url) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Could not construct request URL.\n"); + GNUNET_free (ph); + return NULL; + } + extensions = json_array (); + GNUNET_assert (NULL != extensions); + for (unsigned int i = 0; inum_extensions; i++) + { + json_t *config; + const struct TALER_AgeMask *mask; + const struct TALER_Extension *ext + = &pkd->extensions[i]; + + switch (ext->type) + { + // TODO: case TALER_Extension_Peer2Peer + case TALER_Extension_AgeRestriction: + mask = (struct TALER_AgeMask *) (&ext->config); + config = GNUNET_JSON_PACK (GNUNET_JSON_pack_data_auto ("mask", + &mask->mask)); + GNUNET_assert (NULL != config); + break; + default: + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Extension not supported.\n"); + } + + GNUNET_assert (0 == + json_array_append_new ( + extensions, + GNUNET_JSON_PACK ( + GNUNET_JSON_pack_data_auto ("extension", + &ext->name), + GNUNET_JSON_pack_data_auto ("config", + config) + ))); + } + extension_sigs = json_array (); + GNUNET_assert (NULL != extension_sigs); + for (unsigned int i = 0; inum_extensions; i++) + { + const struct TALER_MasterSignatureP *sks + = &pkd->extension_sigs[i]; + + GNUNET_assert (0 == + json_array_append_new ( + extension_sigs, + GNUNET_JSON_PACK ( + GNUNET_JSON_pack_data_auto ("extension_sig", + &sks->eddsa_signature)))); + } + body = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_array_steal ("extensions", + extensions), + GNUNET_JSON_pack_array_steal ("extension_sigs", + extension_sigs)); + eh = curl_easy_init (); + GNUNET_assert (NULL != eh); + if (GNUNET_OK != + TALER_curl_easy_post (&ph->post_ctx, + eh, + body)) + { + GNUNET_break (0); + json_decref (body); + GNUNET_free (ph->url); + GNUNET_free (eh); + return NULL; + } + json_decref (body); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Requesting URL '%s'\n", + ph->url); + GNUNET_assert (CURLE_OK == curl_easy_setopt (eh, + CURLOPT_URL, + ph->url)); + ph->job = GNUNET_CURL_job_add2 (ctx, + eh, + ph->post_ctx.headers, + &handle_post_extensions_finished, + ph); + if (NULL == ph->job) + { + TALER_EXCHANGE_post_management_extensions_cancel (ph); + return NULL; + } + return ph; +} + + +void +TALER_EXCHANGE_post_management_extensions_cancel ( + struct TALER_EXCHANGE_ManagementPostExtensionsHandle *ph) +{ + if (NULL != ph->job) + { + GNUNET_CURL_job_cancel (ph->job); + ph->job = NULL; + } + TALER_curl_easy_post_finished (&ph->post_ctx); + GNUNET_free (ph->url); + GNUNET_free (ph); +} -- cgit v1.2.3