From 20c8675ba46bda97330a4117c459a59a9f1c465e Mon Sep 17 00:00:00 2001 From: Alberto Gonzalez Iniesta Date: Mon, 21 Nov 2016 09:37:33 +0100 Subject: New upstream version 2.4~beta1 --- src/openvpn/ssl_verify_mbedtls.h | 78 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 src/openvpn/ssl_verify_mbedtls.h (limited to 'src/openvpn/ssl_verify_mbedtls.h') diff --git a/src/openvpn/ssl_verify_mbedtls.h b/src/openvpn/ssl_verify_mbedtls.h new file mode 100644 index 0000000..e26d08f --- /dev/null +++ b/src/openvpn/ssl_verify_mbedtls.h @@ -0,0 +1,78 @@ +/* + * OpenVPN -- An application to securely tunnel IP networks + * over a single TCP/UDP port, with support for SSL/TLS-based + * session authentication and key exchange, + * packet encryption, packet authentication, and + * packet compression. + * + * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. + * Copyright (C) 2010 Fox Crypto B.V. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * 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 (see the file COPYING included with this + * distribution); if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/** + * @file Control Channel Verification Module mbed TLS backend + */ + +#ifndef SSL_VERIFY_MBEDTLS_H_ +#define SSL_VERIFY_MBEDTLS_H_ + +#include "syshead.h" +#include + +#ifndef __OPENVPN_X509_CERT_T_DECLARED +#define __OPENVPN_X509_CERT_T_DECLARED +typedef mbedtls_x509_crt openvpn_x509_cert_t; +#endif + +/** @name Function for authenticating a new connection from a remote OpenVPN peer + * @{ */ + +/** + * Verify that the remote OpenVPN peer's certificate allows setting up a + * VPN tunnel. + * @ingroup control_tls + * + * This callback function is called when a new TLS session is being setup to + * determine whether the remote OpenVPN peer's certificate is allowed to + * connect. It is called for once for every certificate in the chain. The + * callback functionality is configured in the \c init_ssl() function, which + * calls the mbed TLS library's \c ssl_set_verify_callback() function with \c + * verify_callback() as its callback argument. + * + * It checks *flags and registers the certificate hash. If these steps succeed, + * it calls the \c verify_cert() function, which performs OpenVPN-specific + * verification. + * + * @param session_obj - The OpenVPN \c tls_session associated with this object, + * as set during SSL session setup. + * @param cert - The certificate used by mbed TLS. + * @param cert_depth - The depth of the current certificate in the chain, with + * 0 being the actual certificate. + * @param flags - Whether the remote OpenVPN peer's certificate + * passed verification. A value of 0 means it + * verified successfully, any other value means it + * failed. \c verify_callback() is considered to have + * ok'ed this certificate if flags is 0 when it returns. + * + * @return The return value is 0 unless a fatal error occurred. + */ +int verify_callback (void *session_obj, mbedtls_x509_crt *cert, int cert_depth, + uint32_t *flags); + +/** @} name Function for authenticating a new connection from a remote OpenVPN peer */ + +#endif /* SSL_VERIFY_MBEDTLS_H_ */ -- cgit v1.2.3