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-rwxr-xr-xopenvpn/win32.h251
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diff --git a/openvpn/win32.h b/openvpn/win32.h
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+/*
+ * OpenVPN -- An application to securely tunnel IP networks
+ * over a single 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
+ */
+
+#ifdef WIN32
+#ifndef OPENVPN_WIN32_H
+#define OPENVPN_WIN32_H
+
+#include "mtu.h"
+
+/*
+ * Win32-specific OpenVPN code, targetted at the mingw
+ * development environment.
+ */
+
+void init_win32 (void);
+void uninit_win32 (void);
+
+void set_pause_exit_win32 (void);
+
+/*
+ * Use keyboard input or events
+ * to simulate incoming signals
+ */
+
+#define SIGUSR1 1
+#define SIGUSR2 2
+#define SIGHUP 3
+#define SIGTERM 4
+#define SIGINT 5
+
+struct security_attributes
+{
+ SECURITY_ATTRIBUTES sa;
+ SECURITY_DESCRIPTOR sd;
+};
+
+#define HANDLE_DEFINED(h) ((h) != NULL && (h) != INVALID_HANDLE_VALUE)
+
+/*
+ * Save old window title.
+ */
+struct window_title
+{
+ bool saved;
+ char old_window_title [256];
+};
+
+struct rw_handle {
+ HANDLE read;
+ HANDLE write;
+};
+
+/*
+ * Event-based notification of incoming TCP connections
+ */
+
+#define NE32_PERSIST_EVENT (1<<0)
+#define NE32_WRITE_EVENT (1<<1)
+
+static inline bool
+defined_net_event_win32 (const struct rw_handle *event)
+{
+ return event->read != NULL;
+}
+
+void init_net_event_win32 (struct rw_handle *event, long network_events, socket_descriptor_t sd, unsigned int flags);
+long reset_net_event_win32 (struct rw_handle *event, socket_descriptor_t sd);
+void close_net_event_win32 (struct rw_handle *event, socket_descriptor_t sd, unsigned int flags);
+
+/*
+ * A stateful variant of the net_event_win32 functions above
+ */
+
+struct net_event_win32
+{
+ struct rw_handle handle;
+ socket_descriptor_t sd;
+ long event_mask;
+};
+
+void net_event_win32_init (struct net_event_win32 *ne);
+void net_event_win32_start (struct net_event_win32 *ne, long network_events, socket_descriptor_t sd);
+void net_event_win32_reset (struct net_event_win32 *ne);
+void net_event_win32_reset_write (struct net_event_win32 *ne);
+void net_event_win32_stop (struct net_event_win32 *ne);
+void net_event_win32_close (struct net_event_win32 *ne);
+
+static bool
+net_event_win32_defined (const struct net_event_win32 *ne)
+{
+ return defined_net_event_win32 (&ne->handle);
+}
+
+static inline struct rw_handle *
+net_event_win32_get_event (struct net_event_win32 *ne)
+{
+ return &ne->handle;
+}
+
+static inline long
+net_event_win32_get_event_mask (const struct net_event_win32 *ne)
+{
+ return ne->event_mask;
+}
+
+static inline void
+net_event_win32_clear_selected_events (struct net_event_win32 *ne, long selected_events)
+{
+ ne->event_mask &= ~selected_events;
+}
+
+/*
+ * Signal handling
+ */
+struct win32_signal {
+# define WSO_MODE_UNDEF 0
+# define WSO_MODE_SERVICE 1
+# define WSO_MODE_CONSOLE 2
+ int mode;
+ struct rw_handle in;
+ DWORD console_mode_save;
+ bool console_mode_save_defined;
+};
+
+extern struct win32_signal win32_signal; /* static/global */
+extern struct window_title window_title; /* static/global */
+
+void win32_signal_clear (struct win32_signal *ws);
+
+/* win32_signal_open startup type */
+#define WSO_NOFORCE 0
+#define WSO_FORCE_SERVICE 1
+#define WSO_FORCE_CONSOLE 2
+
+void win32_signal_open (struct win32_signal *ws,
+ int force, /* set to WSO force parm */
+ const char *exit_event_name,
+ bool exit_event_initial_state);
+
+void win32_signal_close (struct win32_signal *ws);
+
+int win32_signal_get (struct win32_signal *ws);
+
+void win32_pause (struct win32_signal *ws);
+
+/*
+ * Set the text on the window title bar
+ */
+
+void window_title_clear (struct window_title *wt);
+void window_title_save (struct window_title *wt);
+void window_title_restore (const struct window_title *wt);
+void window_title_generate (const char *title);
+
+/*
+ * We try to do all Win32 I/O using overlapped
+ * (i.e. asynchronous) I/O for a performance win.
+ */
+struct overlapped_io {
+# define IOSTATE_INITIAL 0
+# define IOSTATE_QUEUED 1 /* overlapped I/O has been queued */
+# define IOSTATE_IMMEDIATE_RETURN 2 /* I/O function returned immediately without queueing */
+ int iostate;
+ OVERLAPPED overlapped;
+ DWORD size;
+ DWORD flags;
+ int status;
+ bool addr_defined;
+ struct sockaddr_in addr;
+ int addrlen;
+ struct buffer buf_init;
+ struct buffer buf;
+};
+
+void overlapped_io_init (struct overlapped_io *o,
+ const struct frame *frame,
+ BOOL event_state,
+ bool tuntap_buffer);
+
+void overlapped_io_close (struct overlapped_io *o);
+
+static inline bool
+overlapped_io_active (struct overlapped_io *o)
+{
+ return o->iostate == IOSTATE_QUEUED || o->iostate == IOSTATE_IMMEDIATE_RETURN;
+}
+
+char *overlapped_io_state_ascii (const struct overlapped_io *o);
+
+/*
+ * Use to control access to resources that only one
+ * OpenVPN process on a given machine can access at
+ * a given time.
+ */
+
+struct semaphore
+{
+ const char *name;
+ bool locked;
+ HANDLE hand;
+};
+
+void semaphore_clear (struct semaphore *s);
+void semaphore_open (struct semaphore *s, const char *name);
+bool semaphore_lock (struct semaphore *s, int timeout_milliseconds);
+void semaphore_release (struct semaphore *s);
+void semaphore_close (struct semaphore *s);
+
+/*
+ * Special global semaphore used to protect network
+ * shell commands from simultaneous instantiation.
+ *
+ * It seems you can't run more than one instance
+ * of netsh on the same machine at the same time.
+ */
+
+extern struct semaphore netcmd_semaphore;
+void netcmd_semaphore_init (void);
+void netcmd_semaphore_close (void);
+void netcmd_semaphore_lock (void);
+void netcmd_semaphore_release (void);
+
+bool get_console_input_win32 (const char *prompt, const bool echo, char *input, const int capacity);
+char *getpass (const char *prompt);
+
+/* Set Win32 security attributes structure to allow all access */
+bool init_security_attributes_allow_all (struct security_attributes *obj);
+
+#endif
+#endif