1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel (at) 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.haxx.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 ***************************************************************************/ 22 /* <DESC> 23 * Shows HTTPS usage with client certs and optional ssl engine use. 24 * </DESC> 25 */ 26 #include <assert.h> 27 #include <ctype.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 32 #include <curl/curl.h> 33 34 /* 35 * An SSL-enabled libcurl is required for this sample to work (at least one 36 * SSL backend has to be configured). 37 * 38 * **** This example only works with libcurl 7.56.0 and later! **** 39 */ 40 41 int main(int argc, char **argv) 42 { 43 const char *name = argc > 1 ? argv[1] : "openssl"; 44 CURLsslset result; 45 46 if(!strcmp("list", name)) { 47 const curl_ssl_backend **list; 48 int i; 49 50 result = curl_global_sslset(-1, NULL, &list); 51 assert(result == CURLSSLSET_UNKNOWN_BACKEND); 52 53 for(i = 0; list[i]; i++) 54 printf("SSL backend #%d: '%s' (ID: %d)\n", 55 i, list[i]->name, list[i]->id); 56 57 return 0; 58 } 59 else if(isdigit(*name)) { 60 curl_sslbackend id = (curl_sslbackend)atoi(name); 61 62 result = curl_global_sslset(id, NULL, NULL); 63 } 64 else 65 result = curl_global_sslset(-1, name, NULL); 66 67 if(result == CURLSSLSET_UNKNOWN_BACKEND) { 68 fprintf(stderr, "Unknown SSL backend id: %s\n", name); 69 return 1; 70 } 71 72 assert(result == CURLSSLSET_OK); 73 74 printf("Version with SSL backend '%s':\n\n\t%s\n", name, curl_version()); 75 76 return 0; 77 } 78
