From f0ba12d35661256827ce578ab9bd0420d7a7b7f5 Mon Sep 17 00:00:00 2001 From: Christian Grothoff Date: Sun, 19 Apr 2020 11:51:39 +0200 Subject: implement DELETE /instances/$ID --- src/lib/merchant_api_get_instances.c | 292 +++++++++++++++++++++++++++++++++++ 1 file changed, 292 insertions(+) create mode 100644 src/lib/merchant_api_get_instances.c (limited to 'src/lib/merchant_api_get_instances.c') diff --git a/src/lib/merchant_api_get_instances.c b/src/lib/merchant_api_get_instances.c new file mode 100644 index 00000000..830e9b5f --- /dev/null +++ b/src/lib/merchant_api_get_instances.c @@ -0,0 +1,292 @@ +/* + This file is part of TALER + Copyright (C) 2014-2018, 2020 Taler Systems SA + + TALER is free software; you can redistribute it and/or modify it under the + terms of the GNU Lesser General Public License as published by the Free Software + Foundation; either version 2.1, 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License along with + TALER; see the file COPYING.LGPL. If not, see + +*/ +/** + * @file lib/merchant_api_get_instances.c + * @brief Implementation of the GET /instances request of the merchant's HTTP API + * @author Christian Grothoff + */ +#include "platform.h" +#include +#include +#include /* just for HTTP status codes */ +#include +#include +#include "taler_merchant_service.h" +#include +#include + + +/** + * Handle for a GET /instances operation. + */ +struct TALER_MERCHANT_InstancesGetHandle +{ + /** + * The url for this request. + */ + char *url; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Function to call with the result. + */ + TALER_MERCHANT_InstancesGetCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Reference to the execution context. + */ + struct GNUNET_CURL_Context *ctx; + +}; + + +/** + * Parse instance information from @a ia. + * + * @param ia JSON array (or NULL!) with instance data + * @param igh operation handle + * @return #GNUNET_OK on success + */ +static int +parse_instances (const json_t *ia, + struct TALER_MERCHANT_InstancesGetHandle *igh) +{ + unsigned int iis_len = json_array_size (ia); + struct TALER_MERCHANT_InstanceInformation iis[iis_len]; + size_t index; + json_t *value; + int ret; + + ret = GNUNET_OK; + json_array_foreach (ia, index, value) { + struct TALER_MERCHANT_InstanceInformation *ii = &iis[index]; + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_string ("name", + &ii->name), + GNUNET_JSON_spec_string ("instance", + &ii->id), + GNUNET_JSON_spec_fixed_auto ("merchant_pub", + &ii->merchant_pub), + GNUNET_JSON_spec_json ("payment_targets", + &ii->payment_targets), + GNUNET_JSON_spec_end () + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (value, + spec, + NULL, NULL)) + { + GNUNET_break_op (0); + ret = GNUNET_SYSERR; + continue; + } + if (! json_is_array (ii->payment_targets)) + { + GNUNET_break_op (0); + ret = GNUNET_SYSERR; + break; + } + for (unsigned int i = 0; ipayment_targets); i++) + { + if (! json_is_string (json_array_get (ii->payment_targets, + i))) + { + GNUNET_break_op (0); + ret = GNUNET_SYSERR; + break; + } + } + if (GNUNET_SYSERR == ret) + break; + } + if (GNUNET_OK == ret) + { + struct TALER_MERCHANT_HttpResponse hr = { + .http_status = MHD_HTTP_OK + }; + + igh->cb (igh->cb_cls, + &hr, + iis_len, + iis); + igh->cb = NULL; /* just to be sure */ + } + for (unsigned int i = 0; ijob = NULL; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Got /instances response with status code %u\n", + (unsigned int) response_code); + switch (response_code) + { + case MHD_HTTP_OK: + { + json_t *instances; + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_json ("instances", + &instances), + GNUNET_JSON_spec_end () + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (json, + spec, + NULL, NULL)) + { + hr.http_status = 0; + hr.ec = TALER_EC_INVALID_RESPONSE; + } + else + { + if ( (! json_is_array (instances)) || + (GNUNET_OK == + parse_instances (instances, + igh)) ) + { + GNUNET_JSON_parse_free (spec); + TALER_MERCHANT_instances_get_cancel (igh); + return; + } + else + { + hr.http_status = 0; + hr.ec = TALER_EC_INVALID_RESPONSE; + } + } + GNUNET_JSON_parse_free (spec); + break; + } + default: + /* unexpected response code */ + 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\n", + (unsigned int) response_code, + (int) hr.ec); + break; + } + igh->cb (igh->cb_cls, + &hr, + 0, + NULL); + TALER_MERCHANT_instances_get_cancel (igh); +} + + +/** + * Get the instance data of a backend. Will connect to the merchant backend + * and obtain information about the instances. The respective information will + * be passed to the @a instances_cb once available. + * + * @param ctx the context + * @param backend_url HTTP base URL for the backend + * @param instances_cb function to call with the + * backend's instances information + * @param instances_cb_cls closure for @a config_cb + * @return the instances handle; NULL upon error + */ +struct TALER_MERCHANT_InstancesGetHandle * +TALER_MERCHANT_instances_get (struct GNUNET_CURL_Context *ctx, + const char *backend_url, + TALER_MERCHANT_InstancesGetCallback instances_cb, + void *instances_cb_cls) +{ + struct TALER_MERCHANT_InstancesGetHandle *igh; + CURL *eh; + + igh = GNUNET_new (struct TALER_MERCHANT_InstancesGetHandle); + igh->ctx = ctx; + igh->cb = instances_cb; + igh->cb_cls = instances_cb_cls; + igh->url = TALER_url_join (backend_url, + "instances", + NULL); + if (NULL == igh->url) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Could not construct request URL.\n"); + GNUNET_free (igh); + return NULL; + } + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Requesting URL '%s'\n", + igh->url); + eh = curl_easy_init (); + GNUNET_assert (CURLE_OK == + curl_easy_setopt (eh, + CURLOPT_URL, + igh->url)); + igh->job = GNUNET_CURL_job_add (ctx, + eh, + GNUNET_YES, + &handle_instances_finished, + igh); + return igh; +} + + +/** + * Cancel /instances request. Must not be called by clients after + * the callback was invoked. + * + * @param igh request to cancel. + */ +void +TALER_MERCHANT_instances_get_cancel ( + struct TALER_MERCHANT_InstancesGetHandle *igh) +{ + if (NULL != igh->job) + GNUNET_CURL_job_cancel (igh->job); + GNUNET_free (igh->url); + GNUNET_free (igh); +} -- cgit v1.2.3