exchange

Base system with REST service to issue digital coins, run by the payment service provider
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exchange_api_curl_defaults.c (2641B)

      1 /*
      2   This file is part of TALER
      3   Copyright (C) 2014-2018, 2021 Taler Systems SA
      4 
      5   TALER is free software; you can redistribute it and/or modify it under the
      6   terms of the GNU General Public License as published by the Free Software
      7   Foundation; either version 3, or (at your option) any later version.
      8 
      9   TALER is distributed in the hope that it will be useful, but WITHOUT ANY
     10   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
     12 
     13   You should have received a copy of the GNU General Public License along with
     14   TALER; see the file COPYING.  If not, see
     15   <http://www.gnu.org/licenses/>
     16 */
     17 /**
     18  * @file lib/exchange_api_curl_defaults.c
     19  * @brief curl easy handle defaults
     20  * @author Florian Dold
     21  */
     22 #include "taler/taler_curl_lib.h"
     23 #include "exchange_api_curl_defaults.h"
     24 #include "taler/taler_auditor_service.h"
     25 #include "taler/exchange/common.h"
     26 
     27 
     28 /**
     29  * Global options for HTTP requests.
     30  */
     31 static enum TALER_EXCHANGE_GlobalOptions eglobal_options;
     32 
     33 
     34 void
     35 TALER_EXCHANGE_setup (enum TALER_EXCHANGE_GlobalOptions go)
     36 {
     37   unsigned int ago = TALER_AUDITOR_GO_NONE;
     38 
     39   eglobal_options = go;
     40   if (0 != (TALER_EXCHANGE_GO_FORCE_HTTP1_1 & go))
     41     ago |= TALER_AUDITOR_GO_FORCE_HTTP1_1;
     42   if (0 != (TALER_EXCHANGE_GO_ENABLE_HTTP3 & go))
     43     ago |= TALER_AUDITOR_GO_ENABLE_HTTP3;
     44   /* libtalerexchange also makes connections via libtalerauditor
     45      to the auditor, so apply the equivalent options there as well. */
     46   TALER_AUDITOR_setup ((enum TALER_AUDITOR_GlobalOptions) ago);
     47 }
     48 
     49 
     50 CURL *
     51 TALER_EXCHANGE_curl_easy_get_ (const char *url)
     52 {
     53   CURL *eh;
     54 
     55   eh = curl_easy_init ();
     56   if (NULL == eh)
     57   {
     58     GNUNET_break (0);
     59     return NULL;
     60   }
     61   GNUNET_assert (CURLE_OK ==
     62                  curl_easy_setopt (eh,
     63                                    CURLOPT_URL,
     64                                    url));
     65   TALER_curl_set_secure_redirect_policy (eh,
     66                                          url);
     67   /* Enable compression (using whatever curl likes), see
     68      https://curl.se/libcurl/c/CURLOPT_ACCEPT_ENCODING.html  */
     69   GNUNET_break (CURLE_OK ==
     70                 curl_easy_setopt (eh,
     71                                   CURLOPT_ACCEPT_ENCODING,
     72                                   ""));
     73   GNUNET_assert (CURLE_OK ==
     74                  curl_easy_setopt (eh,
     75                                    CURLOPT_TCP_FASTOPEN,
     76                                    1L));
     77   TALER_curl_set_http_version (
     78     eh,
     79     (0 != (TALER_EXCHANGE_GO_ENABLE_HTTP3 & eglobal_options)) &&
     80     (0 == (TALER_EXCHANGE_GO_FORCE_HTTP1_1 & eglobal_options)));
     81   return eh;
     82 }