Unverified Commit a34e141c authored by Johannes Schindelin's avatar Johannes Schindelin Committed by Daniel Stenberg
Browse files

docs/examples: demonstrate how to select SSL backends 



The newly-introduced curl_global_sslset() function deserves to be
show-cased.

Signed-off-by: default avatarJohannes Schindelin <johannes.schindelin@gmx.de>
parent 0fb41255

docs/INSTALL.md

+3 −0
Original line number Diff line number Diff line
@@ -222,6 +222,9 @@ subdirectory run following command from mentioned subdirectory: 
In order to build sample program simplessl.c an SSL enabled libcurl is

required, as well as the OpenSSL libeay32.lib and ssleay32.lib libraries.



In order to build sample program `sslbackend.c`, an SSL enabled libcurl

is required.



## Disabling Specific Protocols in Windows builds



The configure utility, unfortunately, is not available for the Windows

docs/examples/.gitignore

+1 −0
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ smtp-multi 
smtp-ssl

smtp-tls

smtp-vrfy

sslbackend

url2file

usercertinmem

xmlstream

docs/examples/Makefile.inc

+1 −1
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \ 
  imap-search imap-create imap-delete imap-copy imap-noop imap-ssl         \

  imap-tls imap-multi url2file sftpget ftpsget postinmemory http2-download \

  http2-upload http2-serverpush getredirect ftpuploadfrommem               \

  ftpuploadresume

  ftpuploadresume sslbackend



# These examples require external dependencies that may not be commonly

# available on POSIX systems, so don't bother attempting to compile them here.

docs/examples/sslbackend.c

0 → 100644
+75 −0
Original line number Diff line number Diff line 
/***************************************************************************

 *                                  _   _ ____  _

 *  Project                     ___| | | |  _ \| |

 *                             / __| | | | |_) | |

 *                            | (__| |_| |  _ <| |___

 *                             \___|\___/|_| \_\_____|

 *

 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.

 *

 * This software is licensed as described in the file COPYING, which

 * you should have received as part of this distribution. The terms

 * are also available at https://curl.haxx.se/docs/copyright.html.

 *

 * You may opt to use, copy, modify, merge, publish, distribute and/or sell

 * copies of the Software, and permit persons to whom the Software is

 * furnished to do so, under the terms of the COPYING file.

 *

 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY

 * KIND, either express or implied.

 *

 ***************************************************************************/

/* <DESC>

 * Shows HTTPS usage with client certs and optional ssl engine use.

 * </DESC>

 */

#include <assert.h>

#include <ctype.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>



#include <curl/curl.h>



/*

 * An SSL-enabled libcurl is required for this sample to work (at least one

 * SSL backend has to be configured).

 *

 *  **** This example only works with libcurl 7.56.0 and later! ****

*/



int main(int argc, char **argv)

{

  const char *name = argc > 1 ? argv[1] : "openssl";

  CURLsslset result;



  if(!strcmp("list", name)) {

    const curl_ssl_backend **list;

    int i;



    result = curl_global_sslset(-1, NULL, &list);

    assert(result == CURLSSLSET_UNKNOWN_BACKEND);



    for(i = 0; list[i]; i++)

      printf("SSL backend #%d: '%s' (ID: %d)\n",

             i, list[i]->name, list[i]->id);



    return 0;

  } else if(isdigit(*name)) {

    curl_sslbackend id = (curl_sslbackend)atoi(name);



    result = curl_global_sslset(id, NULL, NULL);

  } else

    result = curl_global_sslset(-1, name, NULL);



  if(result == CURLSSLSET_UNKNOWN_BACKEND) {

    fprintf(stderr, "Unknown SSL backend id: %s\n", name);

    return 1;

  }



  assert(result == CURLSSLSET_OK);



  printf("Version with SSL backend '%s':\n\n\t%s\n", name, curl_version());



  return 0;

}