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diff --git a/app/openvpn/src/openvpn/ssl_polarssl.h b/app/openvpn/src/openvpn/ssl_polarssl.h
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+/*
+ * 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. <sales@openvpn.net>
+ * Copyright (C) 2010 Fox Crypto B.V. <openvpn@fox-it.com>
+ *
+ * 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 PolarSSL Backend
+ */
+
+#ifndef SSL_POLARSSL_H_
+#define SSL_POLARSSL_H_
+
+#include <polarssl/ssl.h>
+
+#if defined(ENABLE_PKCS11)
+#include <polarssl/pkcs11.h>
+#endif
+
+typedef struct _buffer_entry buffer_entry;
+
+struct _buffer_entry {
+ size_t length;
+ uint8_t *data;
+ buffer_entry *next_block;
+};
+
+typedef struct {
+ size_t data_start;
+ buffer_entry *first_block;
+ buffer_entry *last_block;
+} endless_buffer;
+
+/**
+ * Structure that wraps the TLS context. Contents differ depending on the
+ * SSL library used.
+ *
+ * Either \c priv_key_pkcs11 or \c priv_key must be filled in.
+ */
+struct tls_root_ctx {
+ bool initialised; /**< True if the context has been initialised */
+
+ int endpoint; /**< Whether or not this is a server or a client */
+
+ dhm_context *dhm_ctx; /**< Diffie-Helmann-Merkle context */
+ x509_cert *crt_chain; /**< Local Certificate chain */
+ x509_cert *ca_chain; /**< CA chain for remote verification */
+ rsa_context *priv_key; /**< Local private key */
+#if defined(ENABLE_PKCS11)
+ pkcs11_context *priv_key_pkcs11; /**< PKCS11 private key */
+#endif
+ int * allowed_ciphers; /**< List of allowed ciphers for this connection */
+};
+
+struct key_state_ssl {
+ ssl_context *ctx;
+ ssl_session *ssn;
+ endless_buffer *ct_in;
+ endless_buffer *ct_out;
+};
+
+
+#endif /* SSL_POLARSSL_H_ */