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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 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.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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/* <DESC>
* Shows HTTPS usage with client certs and optional ssl engine use.
* </DESC>
*/
#ifdef _MSC_VER
#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS /* for fopen() */
#endif
#endif
#include <stdio.h>
#include <curl/curl.h>
/* some requirements for this to work:
1. set pCertFile to the file with the client certificate
2. if the key is passphrase protected, set pPassphrase to the
passphrase you use
3. if you are using a crypto engine:
3.1. set a #define USE_ENGINE
3.2. set pEngine to the name of the crypto engine you use
3.3. set pKeyName to the key identifier you want to use
4. if you do not use a crypto engine:
4.1. set pKeyName to the filename of your client key
4.2. if the format of the key file is DER, set pKeyType to "DER"
*/
int main(void)
{
CURL *curl = NULL;
CURLcode result;
FILE *headerfile;
const char *pPassphrase = NULL;
static const char *pCertFile = "testcert.pem";
static const char *pCACertFile = "cacert.pem";
static const char *pHeaderFile = "dumpit";
const char *pKeyName;
const char *pKeyType;
#ifdef USE_ENGINE
pKeyName = "rsa_test";
pKeyType = "ENG";
#else
pKeyName = "testkey.pem";
pKeyType = "PEM";
#endif
result = curl_global_init(CURL_GLOBAL_ALL);
if(result) {
return (int)result;
}
headerfile = fopen(pHeaderFile, "wb");
if(!headerfile)
goto error;
curl = curl_easy_init();
if(!curl)
goto error;
/* what call to write: */
curl_easy_setopt(curl, CURLOPT_URL, "https://secure.site.example/");
curl_easy_setopt(curl, CURLOPT_HEADERDATA, headerfile);
#ifdef USE_ENGINE
/* use crypto engine. nCipher HSM... */
if(curl_easy_setopt(curl, CURLOPT_SSLENGINE, "chil") != CURLE_OK) {
/* load the crypto engine */
fprintf(stderr, "cannot set crypto engine\n");
goto error;
}
if(curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT, 1L) != CURLE_OK) {
/* set the crypto engine as default */
/* only needed for the first time you load
an engine in a curl object... */
fprintf(stderr, "cannot set crypto engine as default\n");
goto error;
}
#endif
/* cert is stored PEM coded in file... */
/* since PEM is default, we need not set it for PEM */
curl_easy_setopt(curl, CURLOPT_SSLCERTTYPE, "PEM");
/* set the cert for client authentication */
curl_easy_setopt(curl, CURLOPT_SSLCERT, pCertFile);
/* sorry, for engine we must set the passphrase
(if the key has one...) */
if(pPassphrase)
curl_easy_setopt(curl, CURLOPT_KEYPASSWD, pPassphrase);
/* if we use a key stored in a crypto engine,
we must set the key type to "ENG" */
curl_easy_setopt(curl, CURLOPT_SSLKEYTYPE, pKeyType);
/* set the private key (file or ID in engine) */
curl_easy_setopt(curl, CURLOPT_SSLKEY, pKeyName);
/* set the file with the certs validating the server */
curl_easy_setopt(curl, CURLOPT_CAINFO, pCACertFile);
/* disconnect if we cannot validate server's cert */
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
/* Perform the request, result gets the return code */
result = curl_easy_perform(curl);
/* Check for errors */
if(result != CURLE_OK)
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(result));
error:
/* always cleanup */
if(curl)
curl_easy_cleanup(curl);
if(headerfile)
fclose(headerfile);
curl_global_cleanup();
return (int)result;
}
|
