/*
establish SSL connection between client
and server
SYNOPSIS
my_ssl_connect
ssl ssl object
RETURN VALUES
0 success
1 error
*/
int my_ssl_connect(SSL *ssl)
{
my_bool blocking;
MYSQL *mysql;
DBUG_ENTER("my_ssl_connect");
DBUG_ASSERT(ssl != NULL);
mysql= (MYSQL *)SSL_get_app_data(ssl);
CLEAR_CLIENT_ERROR(mysql);
/* Set socket to blocking if not already set */
if (!(blocking= vio_is_blocking(mysql->net.vio)))
vio_blocking(mysql->net.vio, TRUE);
SSL_clear(ssl);
SSL_SESSION_set_timeout(SSL_get_session(ssl),
mysql->options.connect_timeout);
SSL_set_fd(ssl, mysql->net.vio->sd);
if (SSL_connect(ssl) != 1)
{
my_SSL_error(mysql);
/* restore blocking mode */
if (!blocking)
vio_blocking(mysql->net.vio, FALSE);
DBUG_RETURN(1);
}
vio_reset(mysql->net.vio, VIO_TYPE_SSL, mysql->net.vio->sd, 0, 0);
mysql->net.vio->ssl= ssl;
DBUG_RETURN(0);
}
/*
establish SSL connection between client
and server
SYNOPSIS
my_ssl_connect
ssl ssl object
RETURN VALUES
0 success
1 error
*/
int my_ssl_connect(SSL *ssl)
{
my_bool blocking;
MYSQL *mysql;
long rc;
my_bool try_connect= 1;
DBUG_ENTER("my_ssl_connect");
DBUG_ASSERT(ssl != NULL);
mysql= (MYSQL *)SSL_get_app_data(ssl);
CLEAR_CLIENT_ERROR(mysql);
/* Set socket to non blocking */
if (!(blocking= vio_is_blocking(mysql->net.vio)))
vio_blocking(mysql->net.vio, FALSE, 0);
SSL_clear(ssl);
SSL_SESSION_set_timeout(SSL_get_session(ssl),
mysql->options.connect_timeout);
SSL_set_fd(ssl, mysql->net.vio->sd);
while (try_connect && (rc= SSL_connect(ssl)) == -1)
{
switch(SSL_get_error(ssl, rc)) {
case SSL_ERROR_WANT_READ:
if (vio_wait_or_timeout(mysql->net.vio, TRUE, mysql->options.connect_timeout) < 1)
try_connect= 0;
break;
case SSL_ERROR_WANT_WRITE:
if (vio_wait_or_timeout(mysql->net.vio, TRUE, mysql->options.connect_timeout) < 1)
try_connect= 0;
break;
default:
try_connect= 0;
}
}
if (rc != 1)
{
my_SSL_error(mysql);
DBUG_RETURN(1);
}
rc= SSL_get_verify_result(ssl);
if (rc != X509_V_OK)
{
my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
ER(CR_SSL_CONNECTION_ERROR), X509_verify_cert_error_string(rc));
/* restore blocking mode */
if (!blocking)
vio_blocking(mysql->net.vio, FALSE, 0);
DBUG_RETURN(1);
}
vio_reset(mysql->net.vio, VIO_TYPE_SSL, mysql->net.vio->sd, 0, 0);
mysql->net.vio->ssl= ssl;
DBUG_RETURN(0);
}
/* {{{ my_bool ma_pvio_start_ssl */
my_bool ma_pvio_start_ssl(MARIADB_PVIO *pvio)
{
if (!pvio || !pvio->mysql)
return 1;
CLEAR_CLIENT_ERROR(pvio->mysql);
if (!(pvio->cssl= ma_pvio_ssl_init(pvio->mysql)))
{
return 1;
}
if (ma_pvio_ssl_connect(pvio->cssl))
{
my_free(pvio->cssl);
pvio->cssl= NULL;
return 1;
}
if ((pvio->mysql->options.ssl_ca || pvio->mysql->options.ssl_capath) &&
(pvio->mysql->client_flag & CLIENT_SSL_VERIFY_SERVER_CERT) &&
ma_pvio_ssl_verify_server_cert(pvio->cssl))
return 1;
if (pvio->mysql->options.extension &&
(pvio->mysql->options.extension->ssl_fp || pvio->mysql->options.extension->ssl_fp_list))
{
if (ma_pvio_ssl_check_fp(pvio->cssl,
pvio->mysql->options.extension->ssl_fp,
pvio->mysql->options.extension->ssl_fp_list))
return 1;
}
return 0;
}
/*
establish SSL connection between client
and server
SYNOPSIS
my_ssl_connect
ssl ssl object
RETURN VALUES
0 success
1 error
*/
int my_ssl_connect(SSL *ssl)
{
my_bool blocking;
MYSQL *mysql;
long rc;
DBUG_ENTER("my_ssl_connect");
DBUG_ASSERT(ssl != NULL);
mysql= (MYSQL *)SSL_get_app_data(ssl);
CLEAR_CLIENT_ERROR(mysql);
/* Set socket to blocking if not already set */
if (!(blocking= vio_is_blocking(mysql->net.vio)))
vio_blocking(mysql->net.vio, TRUE, 0);
SSL_clear(ssl);
SSL_SESSION_set_timeout(SSL_get_session(ssl),
mysql->options.connect_timeout);
SSL_set_fd(ssl, mysql->net.vio->sd);
if (SSL_connect(ssl) != 1)
{
my_SSL_error(mysql);
/* restore blocking mode */
if (!blocking)
vio_blocking(mysql->net.vio, FALSE, 0);
DBUG_RETURN(1);
}
rc= SSL_get_verify_result(ssl);
if (rc != X509_V_OK)
{
my_set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN,
ER(CR_SSL_CONNECTION_ERROR), X509_verify_cert_error_string(rc));
/* restore blocking mode */
if (!blocking)
vio_blocking(mysql->net.vio, FALSE, 0);
DBUG_RETURN(1);
}
vio_reset(mysql->net.vio, VIO_TYPE_SSL, mysql->net.vio->sd, 0, 0);
mysql->net.vio->ssl= ssl;
DBUG_RETURN(0);
}
/* {{{ my_bool ma_pvio_start_ssl */
my_bool ma_pvio_start_ssl(MARIADB_PVIO *pvio)
{
if (!pvio || !pvio->mysql)
return 1;
CLEAR_CLIENT_ERROR(pvio->mysql);
if (!(pvio->ctls= ma_pvio_tls_init(pvio->mysql)))
{
return 1;
}
if (ma_pvio_tls_connect(pvio->ctls))
{
free(pvio->ctls);
pvio->ctls= NULL;
return 1;
}
/* default behaviour:
1. peer certificate verification
2. verify CN (requires option ssl_verify_check)
3. verrify finger print
*/
if ((pvio->mysql->options.ssl_ca || pvio->mysql->options.ssl_capath) &&
(pvio->mysql->client_flag & CLIENT_SSL_VERIFY_SERVER_CERT) &&
ma_pvio_tls_verify_server_cert(pvio->ctls))
return 1;
if (pvio->mysql->options.extension &&
(pvio->mysql->options.extension->tls_fp && pvio->mysql->options.extension->tls_fp[0]) ||
(pvio->mysql->options.extension->tls_fp_list && pvio->mysql->options.extension->tls_fp_list[0]))
{
if (ma_pvio_tls_check_fp(pvio->ctls,
pvio->mysql->options.extension->tls_fp,
pvio->mysql->options.extension->tls_fp_list))
return 1;
}
return 0;
}
static int my_verify_callback(gnutls_session_t ssl)
{
unsigned int status;
const gnutls_datum_t *cert_list;
unsigned int cert_list_size;
int ret;
MYSQL *mysql= (MYSQL *)gnutls_session_get_ptr(ssl);
MARIADB_PVIO *pvio= mysql->net.pvio;
gnutls_x509_crt_t cert;
const char *hostname;
/* read hostname */
hostname = mysql->host;
/* skip verification if no ca_file/path was specified */
if (!mysql->options.ssl_ca)
return 0;
/* This verification function uses the trusted CAs in the credentials
* structure. So you must have installed one or more CA certificates.
*/
ret = gnutls_certificate_verify_peers2 (ssl, &status);
if (ret < 0)
{
pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, "CA verification failed");
return GNUTLS_E_CERTIFICATE_ERROR;
}
// mysql->net.vio->status= status;
if (status & GNUTLS_CERT_INVALID)
{
return GNUTLS_E_CERTIFICATE_ERROR;
}
/* Up to here the process is the same for X.509 certificates and
* OpenPGP keys. From now on X.509 certificates are assumed. This can
* be easily extended to work with openpgp keys as well.
*/
if (gnutls_certificate_type_get (ssl) != GNUTLS_CRT_X509)
{
pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, "Expected X509 certificate");
return GNUTLS_E_CERTIFICATE_ERROR;
}
if (gnutls_x509_crt_init (&cert) < 0)
{
pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, "Error during certificate initialization");
return GNUTLS_E_CERTIFICATE_ERROR;
}
cert_list = gnutls_certificate_get_peers (ssl, &cert_list_size);
if (cert_list == NULL)
{
gnutls_x509_crt_deinit (cert);
pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, "No certificate found");
return GNUTLS_E_CERTIFICATE_ERROR;
}
if (gnutls_x509_crt_import (cert, &cert_list[0], GNUTLS_X509_FMT_DER) < 0)
{
gnutls_x509_crt_deinit (cert);
pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, "Unknown SSL error");
return GNUTLS_E_CERTIFICATE_ERROR;
}
if ((mysql->client_flag & CLIENT_SSL_VERIFY_SERVER_CERT) &&
!gnutls_x509_crt_check_hostname (cert, hostname))
{
gnutls_x509_crt_deinit (cert);
pvio->set_error(mysql, CR_SSL_CONNECTION_ERROR, SQLSTATE_UNKNOWN, "Hostname in certificate doesn't match");
return GNUTLS_E_CERTIFICATE_ERROR;
}
gnutls_x509_crt_deinit (cert);
/* notify gnutls to continue handshake normally */
CLEAR_CLIENT_ERROR(mysql);
return 0;
}
