/*************************************************************************** * _ _ ____ _ * 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)) { int id = atoi(name); result = curl_global_sslset((curl_sslbackend)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; }