Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2014-2026 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-private-transfers-new.c
21 : * @brief Implementation of the POST /private/transfers request
22 : * @author Christian Grothoff
23 : */
24 : #include "taler/platform.h"
25 : #include <curl/curl.h>
26 : #include <jansson.h>
27 : #include <microhttpd.h> /* just for HTTP status codes */
28 : #include <gnunet/gnunet_util_lib.h>
29 : #include <gnunet/gnunet_curl_lib.h>
30 : #include <taler/merchant/post-private-transfers.h>
31 : #include "merchant_api_curl_defaults.h"
32 : #include "merchant_api_common.h"
33 : #include <taler/taler_json_lib.h>
34 : #include <taler/taler_curl_lib.h>
35 :
36 :
37 : /**
38 : * Handle for a POST /private/transfers operation.
39 : */
40 : struct TALER_MERCHANT_PostPrivateTransfersHandle
41 : {
42 : /**
43 : * Base URL of the merchant backend.
44 : */
45 : char *base_url;
46 :
47 : /**
48 : * The full URL for this request.
49 : */
50 : char *url;
51 :
52 : /**
53 : * Handle for the request.
54 : */
55 : struct GNUNET_CURL_Job *job;
56 :
57 : /**
58 : * Function to call with the result.
59 : */
60 : TALER_MERCHANT_PostPrivateTransfersCallback cb;
61 :
62 : /**
63 : * Closure for @a cb.
64 : */
65 : TALER_MERCHANT_POST_PRIVATE_TRANSFERS_RESULT_CLOSURE *cb_cls;
66 :
67 : /**
68 : * Reference to the execution context.
69 : */
70 : struct GNUNET_CURL_Context *ctx;
71 :
72 : /**
73 : * Minor context that holds body and headers.
74 : */
75 : struct TALER_CURL_PostContext post_ctx;
76 :
77 : /**
78 : * Amount credited in this transfer.
79 : */
80 : struct TALER_Amount credit_amount;
81 :
82 : /**
83 : * Wire transfer identifier.
84 : */
85 : struct TALER_WireTransferIdentifierRawP wtid;
86 :
87 : /**
88 : * Payto URI of the merchant account.
89 : */
90 : struct TALER_FullPayto payto_uri;
91 :
92 : /**
93 : * Base URL of the exchange.
94 : */
95 : char *exchange_url;
96 : };
97 :
98 :
99 : /**
100 : * Function called when we're done processing the
101 : * HTTP POST /private/transfers request.
102 : *
103 : * @param cls the `struct TALER_MERCHANT_PostPrivateTransfersHandle`
104 : * @param response_code HTTP response code, 0 on error
105 : * @param response response body, NULL if not in JSON
106 : */
107 : static void
108 0 : handle_post_transfers_finished (void *cls,
109 : long response_code,
110 : const void *response)
111 : {
112 0 : struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth = cls;
113 0 : const json_t *json = response;
114 0 : struct TALER_MERCHANT_PostPrivateTransfersResponse ptr = {
115 0 : .hr.http_status = (unsigned int) response_code,
116 : .hr.reply = json
117 : };
118 :
119 0 : ppth->job = NULL;
120 0 : switch (response_code)
121 : {
122 0 : case 0:
123 0 : ptr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
124 0 : break;
125 0 : case MHD_HTTP_NO_CONTENT:
126 0 : break;
127 0 : case MHD_HTTP_UNAUTHORIZED:
128 0 : ptr.hr.ec = TALER_JSON_get_error_code (json);
129 0 : ptr.hr.hint = TALER_JSON_get_error_hint (json);
130 0 : break;
131 0 : case MHD_HTTP_NOT_FOUND:
132 0 : GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
133 : "Did not find any data\n");
134 0 : ptr.hr.ec = TALER_JSON_get_error_code (json);
135 0 : ptr.hr.hint = TALER_JSON_get_error_hint (json);
136 0 : break;
137 0 : case MHD_HTTP_CONFLICT:
138 0 : ptr.hr.ec = TALER_JSON_get_error_code (json);
139 0 : ptr.hr.hint = TALER_JSON_get_error_hint (json);
140 0 : break;
141 0 : case MHD_HTTP_INTERNAL_SERVER_ERROR:
142 0 : ptr.hr.ec = TALER_JSON_get_error_code (json);
143 0 : ptr.hr.hint = TALER_JSON_get_error_hint (json);
144 0 : break;
145 0 : default:
146 0 : GNUNET_break_op (0);
147 0 : TALER_MERCHANT_parse_error_details_ (json,
148 : response_code,
149 : &ptr.hr);
150 0 : GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
151 : "Unexpected response code %u/%d\n",
152 : (unsigned int) ptr.hr.http_status,
153 : (int) ptr.hr.ec);
154 0 : break;
155 : }
156 0 : ppth->cb (ppth->cb_cls,
157 : &ptr);
158 0 : TALER_MERCHANT_post_private_transfers_cancel (ppth);
159 0 : }
160 :
161 :
162 : struct TALER_MERCHANT_PostPrivateTransfersHandle *
163 0 : TALER_MERCHANT_post_private_transfers_create (
164 : struct GNUNET_CURL_Context *ctx,
165 : const char *url,
166 : const struct TALER_Amount *credit_amount,
167 : const struct TALER_WireTransferIdentifierRawP *wtid,
168 : struct TALER_FullPayto payto_uri,
169 : const char *exchange_url)
170 : {
171 : struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth;
172 :
173 0 : ppth = GNUNET_new (struct TALER_MERCHANT_PostPrivateTransfersHandle);
174 0 : ppth->ctx = ctx;
175 0 : ppth->base_url = GNUNET_strdup (url);
176 0 : ppth->credit_amount = *credit_amount;
177 0 : ppth->wtid = *wtid;
178 0 : ppth->payto_uri.full_payto = GNUNET_strdup (payto_uri.full_payto);
179 0 : ppth->exchange_url = GNUNET_strdup (exchange_url);
180 0 : return ppth;
181 : }
182 :
183 :
184 : enum TALER_ErrorCode
185 0 : TALER_MERCHANT_post_private_transfers_start (
186 : struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth,
187 : TALER_MERCHANT_PostPrivateTransfersCallback cb,
188 : TALER_MERCHANT_POST_PRIVATE_TRANSFERS_RESULT_CLOSURE *cb_cls)
189 : {
190 : json_t *req_obj;
191 : CURL *eh;
192 :
193 0 : ppth->cb = cb;
194 0 : ppth->cb_cls = cb_cls;
195 0 : ppth->url = TALER_url_join (ppth->base_url,
196 : "private/transfers",
197 : NULL);
198 0 : if (NULL == ppth->url)
199 0 : return TALER_EC_GENERIC_CONFIGURATION_INVALID;
200 0 : req_obj = GNUNET_JSON_PACK (
201 : TALER_JSON_pack_amount ("credit_amount",
202 : &ppth->credit_amount),
203 : GNUNET_JSON_pack_data_auto ("wtid",
204 : &ppth->wtid),
205 : TALER_JSON_pack_full_payto ("payto_uri",
206 : ppth->payto_uri),
207 : GNUNET_JSON_pack_string ("exchange_url",
208 : ppth->exchange_url));
209 0 : eh = TALER_MERCHANT_curl_easy_get_ (ppth->url);
210 0 : if ( (NULL == eh) ||
211 : (GNUNET_OK !=
212 0 : TALER_curl_easy_post (&ppth->post_ctx,
213 : eh,
214 : req_obj)) )
215 : {
216 0 : GNUNET_break (0);
217 0 : json_decref (req_obj);
218 0 : if (NULL != eh)
219 0 : curl_easy_cleanup (eh);
220 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
221 : }
222 0 : json_decref (req_obj);
223 0 : ppth->job = GNUNET_CURL_job_add2 (ppth->ctx,
224 : eh,
225 0 : ppth->post_ctx.headers,
226 : &handle_post_transfers_finished,
227 : ppth);
228 0 : if (NULL == ppth->job)
229 0 : return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
230 0 : return TALER_EC_NONE;
231 : }
232 :
233 :
234 : void
235 0 : TALER_MERCHANT_post_private_transfers_cancel (
236 : struct TALER_MERCHANT_PostPrivateTransfersHandle *ppth)
237 : {
238 0 : if (NULL != ppth->job)
239 : {
240 0 : GNUNET_CURL_job_cancel (ppth->job);
241 0 : ppth->job = NULL;
242 : }
243 0 : TALER_curl_easy_post_finished (&ppth->post_ctx);
244 0 : GNUNET_free (ppth->payto_uri.full_payto);
245 0 : GNUNET_free (ppth->exchange_url);
246 0 : GNUNET_free (ppth->url);
247 0 : GNUNET_free (ppth->base_url);
248 0 : GNUNET_free (ppth);
249 0 : }
250 :
251 :
252 : /* end of merchant_api_post-private-transfers-new.c */
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