From 3f6330059b2c60f83a37994a991d70d8f38ce314 Mon Sep 17 00:00:00 2001 From: priscilla Date: Tue, 22 Nov 2022 08:14:31 -0500 Subject: update --- src/include/taler_merchantdb_lib.h | 9 ++ src/include/taler_merchantdb_plugin.h | 6 +- src/lib/merchant_api_get_templates.c | 251 ++++++++++++++++++++++++++++++++++ src/lib/merchant_api_post_templates.c | 233 +++++++++++++++++++++++++++++++ 4 files changed, 496 insertions(+), 3 deletions(-) create mode 100644 src/lib/merchant_api_get_templates.c create mode 100644 src/lib/merchant_api_post_templates.c diff --git a/src/include/taler_merchantdb_lib.h b/src/include/taler_merchantdb_lib.h index 9cce9aac..8d84db79 100644 --- a/src/include/taler_merchantdb_lib.h +++ b/src/include/taler_merchantdb_lib.h @@ -59,6 +59,15 @@ TALER_MERCHANTDB_product_details_free ( struct TALER_MERCHANTDB_ProductDetails *pd); +/** + * Free members of @a tp, but not @a tp itself. + * + * @param[in] tp template details to clean up + */ +void +TALER_MERCHANTDB_template_details_free ( + struct TALER_MERCHANTDB_TemplateDetails *tp); + #endif /* MERCHANT_DB_H */ /* end of taler_merchantdb_lib.h */ diff --git a/src/include/taler_merchantdb_plugin.h b/src/include/taler_merchantdb_plugin.h index 51c5ec02..bfc2d51a 100644 --- a/src/include/taler_merchantdb_plugin.h +++ b/src/include/taler_merchantdb_plugin.h @@ -321,17 +321,17 @@ struct TALER_MERCHANTDB_TemplateDetails /** * Description of the template. */ - const char *template_description; + char *template_description; /** * Base64-encoded product image, or NULL. */ - const char *image; + char *image; /** * In this template contract, we can have additional information. */ - const json_t *template_contract; + json_t *template_contract; }; diff --git a/src/lib/merchant_api_get_templates.c b/src/lib/merchant_api_get_templates.c new file mode 100644 index 00000000..7082ee23 --- /dev/null +++ b/src/lib/merchant_api_get_templates.c @@ -0,0 +1,251 @@ +/* + 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 merchant_api_get_templates.c + * @brief Implementation of the GET /templates 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 "merchant_api_curl_defaults.h" +#include +#include + + +/** + * Handle for a GET /products operation. + */ +struct TALER_MERCHANT_TemplatesGetHandle +{ + /** + * The url for this request. + */ + char *url; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Function to call with the result. + */ + TALER_MERCHANT_TemplatesGetCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Reference to the execution context. + */ + struct GNUNET_CURL_Context *ctx; + +}; + + +/** + * Parse template information from @a ia. + * + * @param ia JSON array (or NULL!) with template data + * @param pgh operation handle + * @return #GNUNET_OK on success + */ +static int +parse_templates (const json_t *ia, + struct TALER_MERCHANT_TemplatesGetHandle *tgh) +{ + unsigned int ies_len = json_array_size (ia); + struct TALER_MERCHANT_TemplateEntry ies[ies_len]; + size_t index; + json_t *value; + int ret; + + ret = GNUNET_OK; + json_array_foreach (ia, index, value) { + struct TALER_MERCHANT_TemplateEntry *ie = &ies[index]; + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_string ("template_id", + &ie->template_id), + GNUNET_JSON_spec_end () + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (value, + spec, + NULL, NULL)) + { + GNUNET_break_op (0); + ret = GNUNET_SYSERR; + continue; + } + if (GNUNET_SYSERR == ret) + break; + } + if (GNUNET_OK == ret) + { + struct TALER_MERCHANT_HttpResponse hr = { + .http_status = MHD_HTTP_OK + }; + + tgh->cb (tgh->cb_cls, + &hr, + ies_len, + ies); + tgh->cb = NULL; /* just to be sure */ + } + return ret; +} + + +/** + * Function called when we're done processing the + * HTTP /templates request. + * + * @param cls the `struct TALER_MERCHANT_TemplatesGetHandle` + * @param response_code HTTP response code, 0 on error + * @param response response body, NULL if not in JSON + */ +static void +handle_get_templates_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_MERCHANT_TemplatesGetHandle *tgh = cls; + const json_t *json = response; + struct TALER_MERCHANT_HttpResponse hr = { + .http_status = (unsigned int) response_code, + .reply = json + }; + + tgh->job = NULL; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Got /templates response with status code %u\n", + (unsigned int) response_code); + switch (response_code) + { + case MHD_HTTP_OK: + { + json_t *templates; + struct GNUNET_JSON_Specification spec[] = { + GNUNET_JSON_spec_json ("templates", + &templates), + GNUNET_JSON_spec_end () + }; + + if (GNUNET_OK != + GNUNET_JSON_parse (json, + spec, + NULL, NULL)) + { + hr.http_status = 0; + hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; + } + else + { + if ( (! json_is_array (templates)) || + (GNUNET_OK == + parse_templates (templates, + tgh)) ) + { + GNUNET_JSON_parse_free (spec); + TALER_MERCHANT_templates_get_cancel (tgh); + return; + } + else + { + hr.http_status = 0; + hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; + } + } + GNUNET_JSON_parse_free (spec); + break; + } + case MHD_HTTP_UNAUTHORIZED: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + /* Nothing really to verify, merchant says we need to authenticate. */ + 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; + } + tgh->cb (tgh->cb_cls, + &hr, + 0, + NULL); + TALER_MERCHANT_templates_get_cancel (tgh); +} + + +struct TALER_MERCHANT_TemplatesGetHandle * +TALER_MERCHANT_templates_get ( + struct GNUNET_CURL_Context *ctx, + const char *backend_url, + TALER_MERCHANT_TemplatesGetCallback cb, + void *cb_cls) +{ + struct TALER_MERCHANT_TemplatesGetHandle *tgh; + CURL *eh; + + tgh = GNUNET_new (struct TALER_MERCHANT_TemplatesGetHandle); + tgh->ctx = ctx; + tgh->cb = cb; + tgh->cb_cls = cb_cls; + tgh->url = TALER_url_join (backend_url, + "private/templates", + NULL); + if (NULL == tgh->url) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Could not construct request URL.\n"); + GNUNET_free (tgh); + return NULL; + } + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Requesting URL '%s'\n", + tgh->url); + eh = TALER_MERCHANT_curl_easy_get_ (tgh->url); + tgh->job = GNUNET_CURL_job_add (ctx, + eh, + &handle_get_templates_finished, + tgh); + return tgh; +} + + +void +TALER_MERCHANT_templates_get_cancel ( + struct TALER_MERCHANT_TemplatesGetHandle *tgh) +{ + if (NULL != tgh->job) + GNUNET_CURL_job_cancel (tgh->job); + GNUNET_free (tgh->url); + GNUNET_free (tgh); +} diff --git a/src/lib/merchant_api_post_templates.c b/src/lib/merchant_api_post_templates.c new file mode 100644 index 00000000..7723d10c --- /dev/null +++ b/src/lib/merchant_api_post_templates.c @@ -0,0 +1,233 @@ +/* + This file is part of TALER + Copyright (C) 2020-2021 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 merchant_api_post_templates.c + * @brief Implementation of the POST /templates request + * of the merchant's HTTP API + * @author Christian Grothoff + */ +#include "platform.h" +#include +#include +#include /* just for HTTP status codes */ +#include +#include "taler_merchant_service.h" +#include "merchant_api_curl_defaults.h" +#include +#include + + +/** + * Handle for a POST /templates/$ID operation. + */ +struct TALER_MERCHANT_TemplatesPostHandle +{ + + /** + * The url for this request. + */ + char *url; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Function to call with the result. + */ + TALER_MERCHANT_TemplatesPostCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Reference to the execution context. + */ + struct GNUNET_CURL_Context *ctx; + + /** + * Minor context that holds body and headers. + */ + struct TALER_CURL_PostContext post_ctx; + +}; + + +/** + * Function called when we're done processing the + * HTTP POST /products request. + * + * @param cls the `struct TALER_MERCHANT_TemplatesPostHandle` + * @param response_code HTTP response code, 0 on error + * @param response response body, NULL if not in JSON + */ +static void +handle_post_templates_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_MERCHANT_TemplatesPostHandle *tph = cls; + const json_t *json = response; + struct TALER_MERCHANT_HttpResponse hr = { + .http_status = (unsigned int) response_code, + .reply = json + }; + + tph->job = NULL; + GNUNET_log (GNUNET_ERROR_TYPE_INFO, + "POST /templates completed with response code %u\n", + (unsigned int) response_code); + switch (response_code) + { + case 0: + hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; + break; + case MHD_HTTP_NO_CONTENT: + break; + case MHD_HTTP_BAD_REQUEST: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + /* This should never happen, either us + * or the merchant is buggy (or API version conflict); + * just pass JSON reply to the application */ + break; + case MHD_HTTP_UNAUTHORIZED: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + /* Nothing really to verify, merchant says we need to authenticate. */ + break; + case MHD_HTTP_FORBIDDEN: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + /* Nothing really to verify, merchant says we tried to abort the payment + * after it was successful. We should pass the JSON reply to the + * application */ + break; + case MHD_HTTP_NOT_FOUND: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + /* Nothing really to verify, this should never + happen, we should pass the JSON reply to the + application */ + 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_INTERNAL_SERVER_ERROR: + hr.ec = TALER_JSON_get_error_code (json); + hr.hint = TALER_JSON_get_error_hint (json); + /* Server had an internal issue; we should retry, + but this API leaves this to the application */ + break; + default: + TALER_MERCHANT_parse_error_details_ (json, + response_code, + &hr); + /* unexpected response code */ + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected response code %u/%d\n", + (unsigned int) response_code, + (int) hr.ec); + GNUNET_break_op (0); + break; + } + tph->cb (tph->cb_cls, + &hr); + TALER_MERCHANT_templates_post_cancel (tph); +} + + +struct TALER_MERCHANT_TemplatesPostHandle * +TALER_MERCHANT_templates_post ( + struct GNUNET_CURL_Context *ctx, + const char *backend_url, + const char *template_id, + const char *template_description, + const char *image, + const json_t *template_contract, + TALER_MERCHANT_TemplatesPostCallback cb, + void *cb_cls) +{ + struct TALER_MERCHANT_TemplatesPostHandle *tph; + json_t *req_obj; + + req_obj = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_string ("template_id", + template_id), + GNUNET_JSON_pack_string ("template_description", + template_description), + GNUNET_JSON_pack_string ("image", + image), + GNUNET_JSON_pack_object_incref ("template_contract", + (json_t *) template_contract)); + tph = GNUNET_new (struct TALER_MERCHANT_TemplatesPostHandle); + tph->ctx = ctx; + tph->cb = cb; + tph->cb_cls = cb_cls; + tph->url = TALER_url_join (backend_url, + "private/templates", + NULL); + if (NULL == tph->url) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Could not construct request URL.\n"); + json_decref (req_obj); + GNUNET_free (tph); + return NULL; + } + { + CURL *eh; + + eh = TALER_MERCHANT_curl_easy_get_ (tph->url); + GNUNET_assert (GNUNET_OK == + TALER_curl_easy_post (&tph->post_ctx, + eh, + req_obj)); + json_decref (req_obj); + tph->job = GNUNET_CURL_job_add2 (ctx, + eh, + tph->post_ctx.headers, + &handle_post_templates_finished, + tph); + GNUNET_assert (NULL != tph->job); + } + return tph; +} + + +void +TALER_MERCHANT_templates_post_cancel ( + struct TALER_MERCHANT_TemplatesPostHandle *tph) +{ + if (NULL != tph->job) + { + GNUNET_CURL_job_cancel (tph->job); + tph->job = NULL; + } + TALER_curl_easy_post_finished (&tph->post_ctx); + GNUNET_free (tph->url); + GNUNET_free (tph); +} + + +/* end of merchant_api_post_templates.c */ -- cgit v1.2.3