Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2022-2023 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify
6 : it under the terms of the GNU Lesser General Public License as
7 : published by the Free Software Foundation; either version 2.1,
8 : or (at your option) any later version.
9 :
10 : TALER is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 : GNU Lesser General Public License for more details.
14 :
15 : You should have received a copy of the GNU Lesser General
16 : Public License along with TALER; see the file COPYING.LGPL.
17 : If not, see <http://www.gnu.org/licenses/>
18 : */
19 : /**
20 : * @file merchant_api_post_using_templates.c
21 : * @brief Implementation of the POST /using_templates request
22 : * of the merchant's HTTP API
23 : * @author Priscilla HUANG
24 : */
25 : #include "platform.h"
26 : #include <curl/curl.h>
27 : #include <jansson.h>
28 : #include <microhttpd.h> /* just for HTTP status codes */
29 : #include <gnunet/gnunet_util_lib.h>
30 : #include "taler_merchant_service.h"
31 : #include "merchant_api_common.h"
32 : #include "merchant_api_curl_defaults.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a POST /templates/$ID operation.
39 : */
40 : struct TALER_MERCHANT_UsingTemplatesPostHandle
41 : {
42 :
43 : /**
44 : * The url for this request.
45 : */
46 : char *url;
47 :
48 : /**
49 : * Handle for the request.
50 : */
51 : struct GNUNET_CURL_Job *job;
52 :
53 : /**
54 : * Function to call with the result.
55 : */
56 : TALER_MERCHANT_PostOrdersCallback cb;
57 :
58 : /**
59 : * Closure for @a cb.
60 : */
61 : void *cb_cls;
62 :
63 : /**
64 : * Reference to the execution context.
65 : */
66 : struct GNUNET_CURL_Context *ctx;
67 :
68 : /**
69 : * Minor context that holds body and headers.
70 : */
71 : struct TALER_CURL_PostContext post_ctx;
72 : };
73 :
74 : /**
75 : * Function called when we're done processing the
76 : * HTTP POST /using-templates request.
77 : *
78 : * @param cls the `struct TALER_MERCHANT_UsingTemplatesPostHandle`
79 : * @param response_code HTTP response code, 0 on error
80 : * @param response response body, NULL if not in JSON
81 : */
82 : static void
83 14 : handle_post_using_templates_finished (void *cls,
84 : long response_code,
85 : const void *response)
86 : {
87 14 : struct TALER_MERCHANT_UsingTemplatesPostHandle *utph = cls;
88 14 : const json_t *json = response;
89 :
90 14 : utph->job = NULL;
91 14 : TALER_MERCHANT_handle_order_creation_response_ (utph->cb,
92 : utph->cb_cls,
93 : response_code,
94 : json);
95 14 : TALER_MERCHANT_using_templates_post_cancel (utph);
96 14 : }
97 :
98 :
99 : struct TALER_MERCHANT_UsingTemplatesPostHandle *
100 14 : TALER_MERCHANT_using_templates_post (
101 : struct GNUNET_CURL_Context *ctx,
102 : const char *backend_url,
103 : const char *template_id,
104 : const char *summary,
105 : const struct TALER_Amount *amount,
106 : TALER_MERCHANT_PostOrdersCallback cb,
107 : void *cb_cls)
108 : {
109 : struct TALER_MERCHANT_UsingTemplatesPostHandle *utph;
110 : json_t *req_obj;
111 :
112 14 : req_obj = GNUNET_JSON_PACK (
113 : GNUNET_JSON_pack_allow_null (
114 : GNUNET_JSON_pack_string ("summary",
115 : summary)),
116 : GNUNET_JSON_pack_allow_null (
117 : TALER_JSON_pack_amount ("amount",
118 : amount)));
119 14 : utph = GNUNET_new (struct TALER_MERCHANT_UsingTemplatesPostHandle);
120 14 : utph->ctx = ctx;
121 14 : utph->cb = cb;
122 14 : utph->cb_cls = cb_cls;
123 : {
124 : char *path;
125 :
126 14 : GNUNET_asprintf (&path,
127 : "templates/%s",
128 : template_id);
129 14 : utph->url = TALER_url_join (backend_url,
130 : path,
131 : NULL);
132 14 : GNUNET_free (path);
133 : }
134 14 : if (NULL == utph->url)
135 : {
136 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
137 : "Could not construct request URL.\n");
138 0 : json_decref (req_obj);
139 0 : GNUNET_free (utph);
140 0 : return NULL;
141 : }
142 : {
143 : CURL *eh;
144 :
145 14 : eh = TALER_MERCHANT_curl_easy_get_ (utph->url);
146 14 : GNUNET_assert (GNUNET_OK ==
147 : TALER_curl_easy_post (&utph->post_ctx,
148 : eh,
149 : req_obj));
150 14 : json_decref (req_obj);
151 28 : utph->job = GNUNET_CURL_job_add2 (ctx,
152 : eh,
153 14 : utph->post_ctx.headers,
154 : &handle_post_using_templates_finished,
155 : utph);
156 14 : GNUNET_assert (NULL != utph->job);
157 : }
158 14 : return utph;
159 : }
160 :
161 :
162 : void
163 14 : TALER_MERCHANT_using_templates_post_cancel (
164 : struct TALER_MERCHANT_UsingTemplatesPostHandle *utph)
165 : {
166 14 : if (NULL != utph->job)
167 : {
168 0 : GNUNET_CURL_job_cancel (utph->job);
169 0 : utph->job = NULL;
170 : }
171 14 : TALER_curl_easy_post_finished (&utph->post_ctx);
172 14 : GNUNET_free (utph->url);
173 14 : GNUNET_free (utph);
174 14 : }
175 :
176 :
177 : /* end of merchant_api_post_using_templates.c */
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