1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
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 http://curl.haxx.se/docs/copyright.html.
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.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
24 #include <curl/curl.h>
26 /* some requirements for this to work:
27 1. set pCertFile to the file with the client certificate
28 2. if the key is passphrase protected, set pPassphrase to the
30 3. if you are using a crypto engine:
31 3.1. set a #define USE_ENGINE
32 3.2. set pEngine to the name of the crypto engine you use
33 3.3. set pKeyName to the key identifier you want to use
34 4. if you don't use a crypto engine:
35 4.1. set pKeyName to the file name of your client key
36 4.2. if the format of the key file is DER, set pKeyType to "DER"
38 !! verify of the server certificate is not implemented here !!
40 **** This example only works with libcurl 7.9.3 and later! ****
50 const char *pPassphrase = NULL;
52 static const char *pCertFile = "testcert.pem";
53 static const char *pCACertFile="cacert.pem";
61 pKeyName = "rsa_test";
63 pEngine = "chil"; /* for nChiper HSM... */
65 pKeyName = "testkey.pem";
70 headerfile = fopen("dumpit", "w");
72 curl_global_init(CURL_GLOBAL_DEFAULT);
74 curl = curl_easy_init();
76 /* what call to write: */
77 curl_easy_setopt(curl, CURLOPT_URL, "HTTPS://your.favourite.ssl.site");
78 curl_easy_setopt(curl, CURLOPT_WRITEHEADER, headerfile);
80 for(i = 0; i < 1; i++) /* single-iteration loop, just to break out from */
82 if (pEngine) /* use crypto engine */
84 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE,pEngine) != CURLE_OK)
85 { /* load the crypto engine */
86 fprintf(stderr,"can't set crypto engine\n");
89 if (curl_easy_setopt(curl, CURLOPT_SSLENGINE_DEFAULT,1L) != CURLE_OK)
90 { /* set the crypto engine as default */
91 /* only needed for the first time you load
92 a engine in a curl object... */
93 fprintf(stderr,"can't set crypto engine as default\n");
97 /* cert is stored PEM coded in file... */
98 /* since PEM is default, we needn't set it for PEM */
99 curl_easy_setopt(curl,CURLOPT_SSLCERTTYPE,"PEM");
101 /* set the cert for client authentication */
102 curl_easy_setopt(curl,CURLOPT_SSLCERT,pCertFile);
104 /* sorry, for engine we must set the passphrase
105 (if the key has one...) */
107 curl_easy_setopt(curl,CURLOPT_KEYPASSWD,pPassphrase);
109 /* if we use a key stored in a crypto engine,
110 we must set the key type to "ENG" */
111 curl_easy_setopt(curl,CURLOPT_SSLKEYTYPE,pKeyType);
113 /* set the private key (file or ID in engine) */
114 curl_easy_setopt(curl,CURLOPT_SSLKEY,pKeyName);
116 /* set the file with the certs vaildating the server */
117 curl_easy_setopt(curl,CURLOPT_CAINFO,pCACertFile);
119 /* disconnect if we can't validate server's cert */
120 curl_easy_setopt(curl,CURLOPT_SSL_VERIFYPEER,1L);
122 /* Perform the request, res will get the return code */
123 res = curl_easy_perform(curl);
124 /* Check for errors */
126 fprintf(stderr, "curl_easy_perform() failed: %s\n",
127 curl_easy_strerror(res));
132 curl_easy_cleanup(curl);
135 curl_global_cleanup();