/*
This file is part of libmicrohttpd
Copyright (C) 2013, 2016 Christian Grothoff
libmicrohttpd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
libmicrohttpd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with libmicrohttpd; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file test_https_sni.c
* @brief Testcase for libmicrohttpd HTTPS with SNI operations
* @author Christian Grothoff
*/
#include "platform.h"
#include "microhttpd.h"
#include <limits.h>
#include <sys/stat.h>
#include <curl/curl.h>
#ifdef MHD_HTTPS_REQUIRE_GRYPT
#include <gcrypt.h>
#endif /* MHD_HTTPS_REQUIRE_GRYPT */
#include "tls_test_common.h"
#include <gnutls/gnutls.h>
/* This test only works with GnuTLS >= 3.0 */
#if GNUTLS_VERSION_MAJOR >= 3
#include <gnutls/abstract.h>
/**
* A hostname, server key and certificate.
*/
struct Hosts
{
struct Hosts *next;
const char *hostname;
gnutls_pcert_st pcrt;
gnutls_privkey_t key;
};
/**
* Linked list of supported TLDs and respective certificates.
*/
static struct Hosts *hosts;
/* Load the certificate and the private key.
* (This code is largely taken from GnuTLS).
*/
static void
load_keys(const char *hostname,
const char *CERT_FILE,
const char *KEY_FILE)
{
int ret;
gnutls_datum_t data;
struct Hosts *host;
host = malloc (sizeof (struct Hosts));
if (NULL == host)
abort ();
host->hostname = hostname;
host->next = hosts;
hosts = host;
ret = gnutls_load_file (CERT_FILE, &data);
if (ret < 0)
{
fprintf (stderr,
"*** Error loading certificate file %s.\n",
CERT_FILE);
exit (1);
}
ret =
gnutls_pcert_import_x509_raw (&host->pcrt, &data, GNUTLS_X509_FMT_PEM,
0);
if (ret < 0)
{
fprintf (stderr,
"*** Error loading certificate file: %s\n",
gnutls_strerror (ret));
exit (1);
}
gnutls_free (data.data);
ret = gnutls_load_file (KEY_FILE, &data);
if (ret < 0)
{
fprintf (stderr,
"*** Error loading key file %s.\n",
KEY_FILE);
exit (1);
}
gnutls_privkey_init (&host->key);
ret =
gnutls_privkey_import_x509_raw (host->key,
&data, GNUTLS_X509_FMT_PEM,
NULL, 0);
if (ret < 0)
{
fprintf (stderr,
"*** Error loading key file: %s\n",
gnutls_strerror (ret));
exit (1);
}
gnutls_free (data.data);
}
/**
* @param session the session we are giving a cert for
* @param req_ca_dn NULL on server side
* @param nreqs length of req_ca_dn, and thus 0 on server side
* @param pk_algos NULL on server side
* @param pk_algos_length 0 on server side
* @param pcert list of certificates (to be set)
* @param pcert_length length of pcert (to be set)
* @param pkey the private key (to be set)
*/
static int
sni_callback (gnutls_session_t session,
const gnutls_datum_t* req_ca_dn,
int nreqs,
const gnutls_pk_algorithm_t* pk_algos,
int pk_algos_length,
gnutls_pcert_st** pcert,
unsigned int *pcert_length,
gnutls_privkey_t * pkey)
{
char name[256];
size_t name_len;
struct Hosts *host;
unsigned int type;
(void)req_ca_dn;(void)nreqs;(void)pk_algos;(void)pk_algos_length; /* Unused. Silent compiler warning. */
name_len = sizeof (name);
if (GNUTLS_E_SUCCESS !=
gnutls_server_name_get (session,
name,
&name_len,
&type,
0 /* index */))
return -1;
for (host = hosts; NULL != host; host = host->next)
if (0 == strncmp (name, host->hostname, name_len))
break;
if (NULL == host)
{
fprintf (stderr,
"Need certificate for %.*s\n",
(int) name_len,
name);
return -1;
}
#if 0
fprintf (stderr,
"Returning certificate for %.*s\n",
(int) name_len,
name);
#endif
*pkey = host->key;
*pcert_length = 1;
*pcert = &host->pcrt;
return 0;
}
/* perform a HTTP GET request via SSL/TLS */
static int
do_get (const char *url, int port)
{
CURL *c;
struct CBC cbc;
CURLcode errornum;
size_t len;
struct curl_slist *dns_info;
char buf[256];
len = strlen (test_data);
if (NULL == (cbc.buf = malloc (sizeof (char) * len)))
{
fprintf (stderr, MHD_E_MEM);
return -1;
}
cbc.size = len;
cbc.pos = 0;
c = curl_easy_init ();
#if DEBUG_HTTPS_TEST
curl_easy_setopt (c, CURLOPT_VERBOSE, 1);
#endif
curl_easy_setopt (c, CURLOPT_URL, url);
curl_easy_setopt (c, CURLOPT_PORT, (long)port);
curl_easy_setopt (c, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
curl_easy_setopt (c, CURLOPT_TIMEOUT, 10L);
curl_easy_setopt (c, CURLOPT_CONNECTTIMEOUT, 10L);
curl_easy_setopt (c, CURLOPT_WRITEFUNCTION, ©Buffer);
curl_easy_setopt (c, CURLOPT_FILE, &cbc);
/* perform peer authentication */
/* TODO merge into send_curl_req */
curl_easy_setopt (c, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt (c, CURLOPT_SSL_VERIFYHOST, 2);
sprintf(buf, "host1:%d:127.0.0.1", port);
dns_info = curl_slist_append (NULL, buf);
sprintf(buf, "host2:%d:127.0.0.1", port);
dns_info = curl_slist_append (dns_info, buf);
curl_easy_setopt (c, CURLOPT_RESOLVE, dns_info);
curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
/* NOTE: use of CONNECTTIMEOUT without also
setting NOSIGNAL results in really weird
crashes on my system! */
curl_easy_setopt (c, CURLOPT_NOSIGNAL, 1);
if (CURLE_OK != (errornum = curl_easy_perform (c)))
{
fprintf (stderr, "curl_easy_perform failed: `%s'\n",
curl_easy_strerror (errornum));
curl_easy_cleanup (c);
free (cbc.buf);
curl_slist_free_all (dns_info);
return errornum;
}
curl_easy_cleanup (c);
curl_slist_free_all (dns_info);
if (memcmp (cbc.buf, test_data, len) != 0)
{
fprintf (stderr, "Error: local file & received file differ.\n");
free (cbc.buf);
return -1;
}
free (cbc.buf);
return 0;
}
int
main (int argc, char *const *argv)
{
unsigned int error_count = 0;
struct MHD_Daemon *d;
int port;
(void)argc; /* Unused. Silent compiler warning. */
if (MHD_NO != MHD_is_feature_supported (MHD_FEATURE_AUTODETECT_BIND_PORT))
port = 0;
else
port = 3060;
#ifdef MHD_HTTPS_REQUIRE_GRYPT
gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
#ifdef GCRYCTL_INITIALIZATION_FINISHED
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
#endif
#endif /* MHD_HTTPS_REQUIRE_GRYPT */
if (!testsuite_curl_global_init ())
return 99;
if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
{
fprintf (stderr, "Curl does not support SSL. Cannot run the test.\n");
curl_global_cleanup ();
return 77;
}
load_keys ("host1", ABS_SRCDIR "/host1.crt", ABS_SRCDIR "/host1.key");
load_keys ("host2", ABS_SRCDIR "/host2.crt", ABS_SRCDIR "/host2.key");
d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_TLS | MHD_USE_ERROR_LOG,
port,
NULL, NULL,
&http_ahc, NULL,
MHD_OPTION_HTTPS_CERT_CALLBACK, &sni_callback,
MHD_OPTION_END);
if (d == NULL)
{
fprintf (stderr, MHD_E_SERVER_INIT);
return -1;
}
if (0 == port)
{
const union MHD_DaemonInfo *dinfo;
dinfo = MHD_get_daemon_info (d, MHD_DAEMON_INFO_BIND_PORT);
if (NULL == dinfo || 0 == dinfo->port)
{ MHD_stop_daemon (d); return -1; }
port = (int)dinfo->port;
}
if (0 != do_get ("https://host1/", port))
error_count++;
if (0 != do_get ("https://host2/", port))
error_count++;
MHD_stop_daemon (d);
curl_global_cleanup ();
if (error_count != 0)
fprintf (stderr, "Failed test: %s, error: %u.\n", argv[0], error_count);
return (0 != error_count) ? 1 : 0;
}
#else
int main (void)
{
fprintf (stderr,
"SNI not supported by GnuTLS < 3.0\n");
return 77;
}
#endif