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-rw-r--r--forward.h84
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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) 2002-2005 OpenVPN Solutions LLC <info@openvpn.net>
+ *
+ * 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
+ */
+
+#ifndef FORWARD_H
+#define FORWARD_H
+
+#include "openvpn.h"
+#include "occ.h"
+#include "ping.h"
+
+#define TUN_OUT(c) (BLEN(&(c)->c2.to_tun) > 0)
+#define LINK_OUT(c) (BLEN(&(c)->c2.to_link) > 0)
+#define ANY_OUT(c) (TUN_OUT(c) || LINK_OUT(c))
+
+#ifdef ENABLE_FRAGMENT
+#define TO_LINK_FRAG(c) ((c)->c2.fragment && fragment_outgoing_defined ((c)->c2.fragment))
+#else
+#define TO_LINK_FRAG(c) (false)
+#endif
+
+#define TO_LINK_DEF(c) (LINK_OUT(c) || TO_LINK_FRAG(c))
+
+#define IOW_TO_TUN (1<<0)
+#define IOW_TO_LINK (1<<1)
+#define IOW_READ_TUN (1<<2)
+#define IOW_READ_LINK (1<<3)
+#define IOW_SHAPER (1<<4)
+#define IOW_CHECK_RESIDUAL (1<<5)
+#define IOW_FRAG (1<<6)
+#define IOW_MBUF (1<<7)
+#define IOW_READ_TUN_FORCE (1<<8)
+#define IOW_WAIT_SIGNAL (1<<9)
+
+#define IOW_READ (IOW_READ_TUN|IOW_READ_LINK)
+
+void pre_select (struct context *c);
+
+void process_io (struct context *c);
+
+void encrypt_sign (struct context *c, bool comp_frag);
+
+const char *wait_status_string (struct context *c, struct gc_arena *gc);
+void show_wait_status (struct context *c);
+
+void read_incoming_link (struct context *c);
+void process_incoming_link (struct context *c);
+void read_incoming_tun (struct context *c);
+void process_incoming_tun (struct context *c);
+void process_outgoing_link (struct context *c);
+void process_outgoing_tun (struct context *c);
+
+bool send_control_channel_string (struct context *c, const char *str, int msglevel);
+
+#define PIPV4_PASSTOS (1<<0)
+#define PIPV4_MSSFIX (1<<1)
+
+void process_ipv4_header (struct context *c, unsigned int flags, struct buffer *buf);
+
+#if P2MP
+void schedule_exit (struct context *c, const int n_seconds);
+#endif
+
+#endif /* FORWARD_H */