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/* Copyright (c) 2000, 2016, Oracle and/or its affiliates.
Copyright (c) 2011, 2016, MariaDB
This program 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; version 2 of the License.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifdef HAVE_TLS
#include "vio_priv.h"
#include "ma_tls_vio.h"
static const char*
ssl_error_string[] =
{
"No error",
"Unable to get certificate",
"Unable to get private key",
"Private key does not match the certificate public key",
"SSL_CTX_set_default_verify_paths failed",
"Failed to set ciphers to use",
"SSL_CTX_new failed",
"SSL_CTX_set_tmp_dh failed"
};
const char*
sslGetErrString(enum enum_ssl_init_error e)
{
DBUG_ASSERT(SSL_INITERR_NOERROR < e && e < SSL_INITERR_LASTERR);
return ssl_error_string[e];
}
static void check_ssl_init()
{
ma_tls_init();
}
/************************ VioSSLFd **********************************/
static struct st_VioSSLFd *
new_VioSSLFd(const char *key_file, const char *cert_file,
const char *ca_file, const char *ca_path,
const char *cipher, my_bool is_client_method,
enum enum_ssl_init_error *error,
const char *crl_file, const char *crl_path,
const char *passphrase)
{
struct st_VioSSLFd *ssl_fd;
ma_tls_error_t err;
DBUG_ENTER("new_VioSSLFd");
DBUG_PRINT("enter",
("key_file: '%s' cert_file: '%s' ca_file: '%s' ca_path: '%s' "
"cipher: '%s' crl_file: '%s' crl_path: '%s' ",
key_file ? key_file : "NULL",
cert_file ? cert_file : "NULL",
ca_file ? ca_file : "NULL",
ca_path ? ca_path : "NULL",
cipher ? cipher : "NULL",
crl_file ? crl_file : "NULL",
crl_path ? crl_path : "NULL"));
check_ssl_init();
if (!(ssl_fd= ((struct st_VioSSLFd*)
my_malloc(sizeof(struct st_VioSSLFd),MYF(0)))))
goto err0;
if (ma_tls_ctx_new(&ssl_fd->ssl_context, is_client_method ?
MA_TLS_CLIENT : MA_TLS_SERVER))
{
*error= SSL_INITERR_MEMFAIL;
DBUG_PRINT("error", ("%s", sslGetErrString(*error)));
goto err1;
}
/*
Set the ciphers that can be used
NOTE: SSL_CTX_set_cipher_list will return 0 if
none of the provided ciphers could be selected.
If we run in server mode, gnutls will use it's priority cache
*/
if (cipher && ma_tls_ctx_set_cipher(ssl_fd->ssl_context,
cipher,
is_client_method ?
MA_TLS_CLIENT : MA_TLS_SERVER) != 0)
{
*error= SSL_INITERR_CIPHERS;
DBUG_PRINT("error", ("%s", sslGetErrString(*error)));
goto err2;
}
#if !defined(HAVE_OPENSSL)
ssl_fd->cipher= cipher;
#endif
err= ma_tls_ctx_load_ca(ssl_fd->ssl_context, ca_file, ca_path);
if ((*error= err.tls_err))
{
printf("error: %d\n", err.lib_err);
DBUG_PRINT("warning", ("ma_tls_ctx_load_ca filed"));
goto err2;
}
if (crl_file || crl_path)
{
err= ma_tls_ctx_load_crl(ssl_fd->ssl_context, crl_file, crl_path);
if ((*error= err.tls_err))
{
DBUG_PRINT("warning", ("ma_tls_ctx_load_crl filed"));
goto err2;
}
}
err= ma_tls_ctx_load_key_cert(ssl_fd->ssl_context, key_file, cert_file,
passphrase);
if ((*error= err.tls_err))
{
DBUG_PRINT("error", ("vio_set_cert_stuff failed"));
goto err2;
}
/* DH stuff */
if (!is_client_method)
{
err= ma_tls_load_dh(ssl_fd->ssl_context);
if ((*error= err.tls_err))
goto err2;
}
DBUG_PRINT("exit", ("OK 1"));
DBUG_RETURN(ssl_fd);
err2:
ma_tls_ctx_free(ssl_fd->ssl_context);
err1:
my_free(ssl_fd);
err0:
#ifdef HAVE_OPENSSL
DBUG_EXECUTE("error", ERR_print_errors_fp(DBUG_FILE););
#endif
DBUG_RETURN(0);
}
/************************ VioSSLConnectorFd **********************************/
struct st_VioSSLFd *
new_VioSSLConnectorFd(const char *key_file, const char *cert_file,
const char *ca_file, const char *ca_path,
const char *cipher, enum enum_ssl_init_error* error,
const char *crl_file, const char *crl_path,
const char *passphrase)
{
struct st_VioSSLFd *ssl_fd;
#if defined(HAVE_OPENSSL)
int verify= SSL_VERIFY_PEER;
/*
Turn off verification of servers certificate if both
ca_file and ca_path is set to NULL
*/
if (ca_file == 0 && ca_path == 0)
verify= SSL_VERIFY_NONE;
#endif
if (!(ssl_fd= new_VioSSLFd(key_file, cert_file, ca_file,
ca_path, cipher, TRUE, error,
crl_file, crl_path, passphrase)))
{
return 0;
}
/* Init the VioSSLFd as a "connector" ie. the client side */
#if defined(HAVE_OPENSSL)
SSL_CTX_set_verify(ssl_fd->ssl_context, verify, NULL);
#endif
return ssl_fd;
}
/************************ VioSSLAcceptorFd **********************************/
struct st_VioSSLFd *
new_VioSSLAcceptorFd(const char *key_file, const char *cert_file,
const char *ca_file, const char *ca_path,
const char *cipher, enum enum_ssl_init_error* error,
const char *crl_file, const char *crl_path,
const char *passphrase)
{
struct st_VioSSLFd *ssl_fd;
if (!(ssl_fd= new_VioSSLFd(key_file, cert_file, ca_file,
ca_path, cipher, FALSE, error,
crl_file, crl_path, passphrase)))
{
return 0;
}
/* Set max number of cached sessions, returns the previous size */
ma_tls_ctx_set_sess_cache_size(ssl_fd->ssl_context, 128);
ma_tls_ctx_set_verify(ssl_fd->ssl_context);
/*
Set session_id - an identifier for this server session
Use the ssl_fd pointer
*/
ma_tls_ctx_set_sess_id_context(ssl_fd->ssl_context,
(const unsigned char *)ssl_fd,
sizeof(ssl_fd));
return ssl_fd;
}
void free_vio_ssl_acceptor_fd(struct st_VioSSLFd *fd)
{
ma_tls_ctx_free(fd->ssl_context);
my_free(fd);
}
#endif /* HAVE_OPENSSL */
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