quickjs-tart

quickjs-based runtime for wallet-core logic
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connect-to.c (2587B)

      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at https://curl.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  * SPDX-License-Identifier: curl
     22  *
     23  ***************************************************************************/
     24 /* <DESC>
     25  * Use CURLOPT_CONNECT_TO to connect to "wrong" hostname
     26  * </DESC>
     27  */
     28 #include <stdio.h>
     29 #include <curl/curl.h>
     30 
     31 int main(void)
     32 {
     33   CURL *curl;
     34   CURLcode res = CURLE_OK;
     35 
     36   /*
     37     Each single string should be written using the format
     38     HOST:PORT:CONNECT-TO-HOST:CONNECT-TO-PORT where HOST is the host of the
     39     request, PORT is the port of the request, CONNECT-TO-HOST is the host name
     40     to connect to, and CONNECT-TO-PORT is the port to connect to.
     41    */
     42   /* instead of curl.se:443, it resolves and uses example.com:443 but in other
     43      aspects work as if it still is curl.se */
     44   struct curl_slist *host = curl_slist_append(NULL,
     45                                               "curl.se:443:example.com:443");
     46 
     47   curl = curl_easy_init();
     48   if(curl) {
     49     curl_easy_setopt(curl, CURLOPT_CONNECT_TO, host);
     50     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
     51     curl_easy_setopt(curl, CURLOPT_URL, "https://curl.se/");
     52 
     53     /* since this connects to the wrong host, checking the host name in the
     54        server certificate fails, so unless we disable the check libcurl
     55        returns CURLE_PEER_FAILED_VERIFICATION */
     56     curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
     57 
     58     /* Letting the wrong host name in the certificate be okay, the transfer
     59        goes through but (most likely) causes a 404 or similar because it sends
     60        an unknown name in the Host: header field */
     61     res = curl_easy_perform(curl);
     62 
     63     /* always cleanup */
     64     curl_easy_cleanup(curl);
     65   }
     66 
     67   curl_slist_free_all(host);
     68 
     69   return (int)res;
     70 }