seamlessrdp/ServerExe/main.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Seamless windows - Remote server executable

   Based on code copyright (C) 2004-2005 Martin Wickett

   Copyright (C) Peter Åstrand <astrand@cendio.se> 2005-2006
   Copyright (C) Pierre Ossman <ossman@cendio.se> 2006

   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; either version 2 of the License, or
   (at your option) any later version.

   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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <windows.h>
#include <stdio.h>

#include "resource.h"

#define APP_NAME "SeamlessRDP Shell"

/* Global data */
static HINSTANCE g_instance;

typedef void (*set_hooks_proc_t) ();
typedef void (*remove_hooks_proc_t) ();
typedef int (*get_instance_count_proc_t) ();

static void
message(const char *text)
{
        MessageBox(GetDesktopWindow(), text, "SeamlessRDP Shell", MB_OK);
}

int WINAPI
WinMain(HINSTANCE instance, HINSTANCE prev_instance, LPSTR cmdline, int cmdshow)
{
        HMODULE hookdll;

        set_hooks_proc_t set_hooks_fn;
        remove_hooks_proc_t remove_hooks_fn;
        get_instance_count_proc_t instance_count_fn;

        g_instance = instance;

        hookdll = LoadLibrary("hookdll.dll");
        if (!hookdll)
        {
                message("Could not load hook DLL. Unable to continue.");
                return -1;
        }

        set_hooks_fn = (set_hooks_proc_t) GetProcAddress(hookdll, "SetHooks");
        remove_hooks_fn = (remove_hooks_proc_t) GetProcAddress(hookdll, "RemoveHooks");
        instance_count_fn = (get_instance_count_proc_t) GetProcAddress(hookdll, "GetInstanceCount");

        if (!set_hooks_fn || !remove_hooks_fn || !instance_count_fn)
        {
                FreeLibrary(hookdll);
                message("Hook DLL doesn't contain the correct functions. Unable to continue.");
                return -1;
        }

        /* Check if the DLL is already loaded */
        if (instance_count_fn() != 1)
        {
                FreeLibrary(hookdll);
                message("Another running instance of Seamless RDP detected.");
                return -1;
        }

        set_hooks_fn();

        if (strlen(cmdline) == 0)
        {
                message("No command line specified.");
                return -1;
        }
        else
        {
                BOOL result;
                DWORD exitcode;
                PROCESS_INFORMATION proc_info;
                STARTUPINFO startup_info;

                memset(&startup_info, 0, sizeof(STARTUPINFO));
                startup_info.cb = sizeof(STARTUPINFO);

                result = CreateProcess(NULL, cmdline, NULL, NULL, FALSE, 0,
                                       NULL, NULL, &startup_info, &proc_info);

                if (result)
                {
                        do
                        {
                                Sleep(1000);
                                GetExitCodeProcess(proc_info.hProcess, &exitcode);
                        }
                        while (exitcode == STILL_ACTIVE);

                        // Release handles
                        CloseHandle(proc_info.hProcess);
                        CloseHandle(proc_info.hThread);
                }
                else
                {
                        // CreateProcess failed.
                        char msg[256];
                        _snprintf(msg, sizeof(msg),
                                  "Unable to launch the requested application:\n%s", cmdline);
                        message(msg);
                }
        }

        remove_hooks_fn();

        FreeLibrary(hookdll);

        return 1;
}
1	ossman_	1071	/* -- c-basic-offset: 8 --
2			rdesktop: A Remote Desktop Protocol client.
3			Seamless windows - Remote server executable
4	ossman_	1069
5	ossman_	1071	Based on code copyright (C) 2004-2005 Martin Wickett
6	ossman_	1069
7	ossman_	1071	Copyright (C) Peter Åstrand <astrand@cendio.se> 2005-2006
8			Copyright (C) Pierre Ossman <ossman@cendio.se> 2006
9	ossman_	1069
10	ossman_	1071	This program is free software; you can redistribute it and/or modify
11			it under the terms of the GNU General Public License as published by
12			the Free Software Foundation; either version 2 of the License, or
13			(at your option) any later version.
14	ossman_	1069
15	ossman_	1071	This program is distributed in the hope that it will be useful,
16			but WITHOUT ANY WARRANTY; without even the implied warranty of
17			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			GNU General Public License for more details.
19	ossman_	1069
20	ossman_	1071	You should have received a copy of the GNU General Public License
21			along with this program; if not, write to the Free Software
22			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23			*/
24	ossman_	1069
25	ossman_	1071	#include <windows.h>
26			#include <stdio.h>
27	ossman_	1069
28	ossman_	1071	#include "resource.h"
29	ossman_	1069
30	ossman_	1071	#define APP_NAME "SeamlessRDP Shell"
31	ossman_	1069
32	ossman_	1071	/* Global data */
33			static HINSTANCE g_instance;
34	ossman_	1069
35	ossman_	1071	typedef void (*set_hooks_proc_t) ();
36			typedef void (*remove_hooks_proc_t) ();
37			typedef int (*get_instance_count_proc_t) ();
38	ossman_	1069
39	ossman_	1071	static void
40			message(const char *text)
41	ossman_	1069	{
42	ossman_	1071	MessageBox(GetDesktopWindow(), text, "SeamlessRDP Shell", MB_OK);
43	ossman_	1069	}
44
45	ossman_	1071	int WINAPI
46			WinMain(HINSTANCE instance, HINSTANCE prev_instance, LPSTR cmdline, int cmdshow)
47	ossman_	1069	{
48	ossman_	1071	HMODULE hookdll;
49	ossman_	1069
50	ossman_	1071	set_hooks_proc_t set_hooks_fn;
51			remove_hooks_proc_t remove_hooks_fn;
52			get_instance_count_proc_t instance_count_fn;
53	ossman_	1069
54	ossman_	1071	g_instance = instance;
55	ossman_	1069
56	ossman_	1071	hookdll = LoadLibrary("hookdll.dll");
57			if (!hookdll)
58			{
59			message("Could not load hook DLL. Unable to continue.");
60			return -1;
61			}
62	ossman_	1069
63	ossman_	1071	set_hooks_fn = (set_hooks_proc_t) GetProcAddress(hookdll, "SetHooks");
64			remove_hooks_fn = (remove_hooks_proc_t) GetProcAddress(hookdll, "RemoveHooks");
65			instance_count_fn = (get_instance_count_proc_t) GetProcAddress(hookdll, "GetInstanceCount");
66	ossman_	1069
67	ossman_	1071	if (!set_hooks_fn \|\| !remove_hooks_fn \|\| !instance_count_fn)
68			{
69			FreeLibrary(hookdll);
70			message("Hook DLL doesn't contain the correct functions. Unable to continue.");
71			return -1;
72			}
73	ossman_	1069
74	ossman_	1071	/* Check if the DLL is already loaded */
75			if (instance_count_fn() != 1)
76			{
77			FreeLibrary(hookdll);
78			message("Another running instance of Seamless RDP detected.");
79			return -1;
80			}
81	ossman_	1069
82	ossman_	1071	set_hooks_fn();
83	ossman_	1069
84	ossman_	1071	if (strlen(cmdline) == 0)
85			{
86			message("No command line specified.");
87			return -1;
88			}
89			else
90			{
91			BOOL result;
92			DWORD exitcode;
93			PROCESS_INFORMATION proc_info;
94			STARTUPINFO startup_info;
95	ossman_	1069
96	ossman_	1071	memset(&startup_info, 0, sizeof(STARTUPINFO));
97			startup_info.cb = sizeof(STARTUPINFO);
98	ossman_	1069
99	ossman_	1071	result = CreateProcess(NULL, cmdline, NULL, NULL, FALSE, 0,
100			NULL, NULL, &startup_info, &proc_info);
101	ossman_	1069
102	ossman_	1071	if (result)
103			{
104			do
105			{
106			Sleep(1000);
107			GetExitCodeProcess(proc_info.hProcess, &exitcode);
108			}
109			while (exitcode == STILL_ACTIVE);
110	ossman_	1069
111	ossman_	1071	// Release handles
112			CloseHandle(proc_info.hProcess);
113			CloseHandle(proc_info.hThread);
114			}
115			else
116			{
117			// CreateProcess failed.
118			char msg[256];
119			_snprintf(msg, sizeof(msg),
120			"Unable to launch the requested application:\n%s", cmdline);
121			message(msg);
122			}
123			}
124	ossman_	1069
125	ossman_	1071	remove_hooks_fn();
126	ossman_	1069
127	ossman_	1071	FreeLibrary(hookdll);
128	ossman_	1069
129	ossman_	1071	return 1;
130	ossman_	1069	}