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/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
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Seamless windows - Remote server executable |
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|
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Based on code copyright (C) 2004-2005 Martin Wickett |
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|
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Copyright (C) Peter Åstrand <astrand@cendio.se> 2005-2006 |
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Copyright (C) Pierre Ossman <ossman@cendio.se> 2006 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include <windows.h> |
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#include <stdio.h> |
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#include <wtsapi32.h> |
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#include <cchannel.h> |
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|
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#include "vchannel.h" |
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|
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#include "resource.h" |
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|
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#define APP_NAME "SeamlessRDP Shell" |
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|
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#define FOCUS_MSG_NAME "WM_SEAMLESS_FOCUS" |
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static UINT g_wm_seamless_focus; |
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|
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#ifndef WM_WTSSESSION_CHANGE |
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#define WM_WTSSESSION_CHANGE 0x02B1 |
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#endif |
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#ifndef WTS_REMOTE_CONNECT |
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#define WTS_REMOTE_CONNECT 0x3 |
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#endif |
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|
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/* Global data */ |
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static HINSTANCE g_instance; |
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static HWND g_hwnd; |
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|
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typedef void (*set_hooks_proc_t) (); |
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typedef void (*remove_hooks_proc_t) (); |
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typedef int (*get_instance_count_proc_t) (); |
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|
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typedef void (*move_window_proc_t) (HWND hwnd, int x, int y, int width, int height); |
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|
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static move_window_proc_t g_move_window_fn = NULL; |
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|
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static void |
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message(const char *text) |
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{ |
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MessageBox(GetDesktopWindow(), text, "SeamlessRDP Shell", MB_OK); |
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} |
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|
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static char * |
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get_token(char **s) |
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{ |
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char *comma, *head; |
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head = *s; |
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|
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if (!head) |
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return NULL; |
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|
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comma = strchr(head, ','); |
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if (comma) |
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{ |
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*comma = '\0'; |
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*s = comma + 1; |
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} |
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else |
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{ |
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*s = NULL; |
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} |
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|
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return head; |
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} |
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|
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static BOOL CALLBACK |
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enum_cb(HWND hwnd, LPARAM lparam) |
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{ |
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RECT rect; |
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unsigned short title[150]; |
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LONG styles; |
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int state; |
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HWND parent; |
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|
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styles = GetWindowLong(hwnd, GWL_STYLE); |
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|
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if (!(styles & WS_VISIBLE)) |
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return TRUE; |
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|
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if (styles & WS_POPUP) |
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parent = (HWND) GetWindowLong(hwnd, GWL_HWNDPARENT); |
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else |
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parent = NULL; |
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|
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vchannel_write("CREATE,0x%p,0x%p,0x%x", hwnd, parent, 0); |
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|
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if (!GetWindowRect(hwnd, &rect)) |
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{ |
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debug("GetWindowRect failed!"); |
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return TRUE; |
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} |
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|
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vchannel_write("POSITION,0x%p,%d,%d,%d,%d,0x%x", |
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hwnd, |
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rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, 0); |
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|
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GetWindowTextW(hwnd, title, sizeof(title) / sizeof(*title)); |
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|
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vchannel_write("TITLE,0x%x,%s,0x%x", hwnd, vchannel_strfilter_unicode(title), 0); |
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|
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if (styles & WS_MAXIMIZE) |
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state = 2; |
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else if (styles & WS_MINIMIZE) |
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state = 1; |
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else |
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state = 0; |
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|
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vchannel_write("STATE,0x%p,0x%x,0x%x", hwnd, state, 0); |
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|
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return TRUE; |
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} |
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|
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static void |
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do_sync(void) |
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{ |
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vchannel_block(); |
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|
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vchannel_write("SYNCBEGIN,0x0"); |
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|
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EnumWindows(enum_cb, 0); |
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|
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vchannel_write("SYNCEND,0x0"); |
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|
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vchannel_unblock(); |
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} |
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|
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static void |
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do_state(HWND hwnd, int state) |
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{ |
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if (state == 0) |
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ShowWindow(hwnd, SW_RESTORE); |
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else if (state == 1) |
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ShowWindow(hwnd, SW_MINIMIZE); |
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else if (state == 2) |
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ShowWindow(hwnd, SW_MAXIMIZE); |
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else |
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debug("Invalid state %d sent.", state); |
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} |
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|
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static void |
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do_position(HWND hwnd, int x, int y, int width, int height) |
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{ |
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g_move_window_fn(hwnd, x, y, width, height); |
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} |
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|
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static void |
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do_zchange(HWND hwnd, HWND behind) |
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{ |
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if (behind == NULL) |
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behind = HWND_TOP; |
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SetWindowPos(hwnd, behind, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE); |
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} |
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|
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static void |
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do_focus(HWND hwnd) |
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{ |
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SendMessage(hwnd, g_wm_seamless_focus, 0, 0); |
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} |
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|
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static void |
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process_cmds(void) |
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{ |
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char line[VCHANNEL_MAX_LINE]; |
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int size; |
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|
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char *p, *tok1, *tok2, *tok3, *tok4, *tok5, *tok6, *tok7, *tok8; |
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|
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while ((size = vchannel_read(line, sizeof(line))) >= 0) |
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{ |
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p = line; |
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|
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tok1 = get_token(&p); |
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tok2 = get_token(&p); |
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tok3 = get_token(&p); |
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tok4 = get_token(&p); |
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tok5 = get_token(&p); |
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tok6 = get_token(&p); |
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tok7 = get_token(&p); |
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tok8 = get_token(&p); |
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|
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if (strcmp(tok1, "SYNC") == 0) |
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do_sync(); |
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else if (strcmp(tok1, "STATE") == 0) |
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do_state((HWND) strtoul(tok2, NULL, 0), strtol(tok3, NULL, 0)); |
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else if (strcmp(tok1, "POSITION") == 0) |
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do_position((HWND) strtoul(tok2, NULL, 0), strtol(tok3, NULL, 0), |
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strtol(tok4, NULL, 0), strtol(tok5, NULL, 0), strtol(tok6, NULL, |
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0)); |
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else if (strcmp(tok1, "ZCHANGE") == 0) |
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do_zchange((HWND) strtoul(tok2, NULL, 0), (HWND) strtoul(tok3, NULL, 0)); |
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else if (strcmp(tok1, "FOCUS") == 0) |
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do_focus((HWND) strtoul(tok2, NULL, 0)); |
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} |
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} |
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|
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static LRESULT CALLBACK |
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wndproc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam) |
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{ |
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if (message == WM_WTSSESSION_CHANGE) |
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{ |
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if (wparam == WTS_REMOTE_CONNECT) |
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{ |
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/* These get reset on each reconnect */ |
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SystemParametersInfo(SPI_SETDRAGFULLWINDOWS, TRUE, NULL, 0); |
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SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, FALSE, NULL, 0); |
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vchannel_write("HELLO,0x%08x", 1); |
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} |
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} |
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|
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return DefWindowProc(hwnd, message, wparam, lparam); |
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} |
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|
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static BOOL |
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register_class(void) |
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{ |
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WNDCLASSEX wcx; |
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|
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memset(&wcx, 0, sizeof(wcx)); |
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|
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wcx.cbSize = sizeof(wcx); |
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wcx.lpfnWndProc = wndproc; |
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wcx.hInstance = g_instance; |
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wcx.lpszClassName = "SeamlessClass"; |
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|
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return RegisterClassEx(&wcx); |
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} |
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|
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static BOOL |
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create_wnd(void) |
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{ |
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if (!register_class()) |
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return FALSE; |
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|
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g_hwnd = CreateWindow("SeamlessClass", |
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"Seamless Window", |
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WS_OVERLAPPEDWINDOW, |
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CW_USEDEFAULT, |
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CW_USEDEFAULT, |
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CW_USEDEFAULT, |
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CW_USEDEFAULT, (HWND) NULL, (HMENU) NULL, g_instance, (LPVOID) NULL); |
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|
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if (!g_hwnd) |
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return FALSE; |
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|
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return TRUE; |
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} |
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|
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int WINAPI |
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WinMain(HINSTANCE instance, HINSTANCE prev_instance, LPSTR cmdline, int cmdshow) |
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{ |
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HMODULE hookdll; |
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|
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set_hooks_proc_t set_hooks_fn; |
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remove_hooks_proc_t remove_hooks_fn; |
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get_instance_count_proc_t instance_count_fn; |
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|
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g_instance = instance; |
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|
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hookdll = LoadLibrary("seamlessrdp.dll"); |
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if (!hookdll) |
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{ |
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message("Could not load hook DLL. Unable to continue."); |
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return -1; |
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} |
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|
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set_hooks_fn = (set_hooks_proc_t) GetProcAddress(hookdll, "SetHooks"); |
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remove_hooks_fn = (remove_hooks_proc_t) GetProcAddress(hookdll, "RemoveHooks"); |
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instance_count_fn = (get_instance_count_proc_t) GetProcAddress(hookdll, "GetInstanceCount"); |
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g_move_window_fn = (move_window_proc_t) GetProcAddress(hookdll, "SafeMoveWindow"); |
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|
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if (!set_hooks_fn || !remove_hooks_fn || !instance_count_fn || !g_move_window_fn) |
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{ |
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FreeLibrary(hookdll); |
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message("Hook DLL doesn't contain the correct functions. Unable to continue."); |
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return -1; |
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} |
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|
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/* Check if the DLL is already loaded */ |
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if (instance_count_fn() != 1) |
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{ |
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FreeLibrary(hookdll); |
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message("Another running instance of Seamless RDP detected."); |
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return -1; |
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} |
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|
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if (!create_wnd()) |
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{ |
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FreeLibrary(hookdll); |
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message("Couldn't create a window to catch events."); |
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return -1; |
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} |
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|
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g_wm_seamless_focus = RegisterWindowMessage(FOCUS_MSG_NAME); |
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|
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WTSRegisterSessionNotification(g_hwnd, NOTIFY_FOR_THIS_SESSION); |
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|
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vchannel_open(); |
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|
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vchannel_write("HELLO,0x%08x", 0); |
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|
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set_hooks_fn(); |
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|
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/* Since we don't see the entire desktop we must resize windows |
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immediatly. */ |
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SystemParametersInfo(SPI_SETDRAGFULLWINDOWS, TRUE, NULL, 0); |
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|
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/* Disable screen saver since we cannot catch its windows. */ |
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SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, FALSE, NULL, 0); |
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|
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if (strlen(cmdline) == 0) |
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{ |
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message("No command line specified."); |
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return -1; |
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} |
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else |
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{ |
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BOOL result; |
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DWORD exitcode; |
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PROCESS_INFORMATION proc_info; |
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STARTUPINFO startup_info; |
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MSG msg; |
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|
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memset(&startup_info, 0, sizeof(STARTUPINFO)); |
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startup_info.cb = sizeof(STARTUPINFO); |
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|
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result = CreateProcess(NULL, cmdline, NULL, NULL, FALSE, 0, |
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NULL, NULL, &startup_info, &proc_info); |
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|
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if (result) |
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{ |
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do |
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{ |
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while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) |
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{ |
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TranslateMessage(&msg); |
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DispatchMessage(&msg); |
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} |
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process_cmds(); |
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Sleep(100); |
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GetExitCodeProcess(proc_info.hProcess, &exitcode); |
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} |
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while (exitcode == STILL_ACTIVE); |
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|
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// Release handles |
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CloseHandle(proc_info.hProcess); |
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CloseHandle(proc_info.hThread); |
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} |
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else |
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{ |
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// CreateProcess failed. |
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char msg[256]; |
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_snprintf(msg, sizeof(msg), |
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"Unable to launch the requested application:\n%s", cmdline); |
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message(msg); |
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} |
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} |
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|
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WTSUnRegisterSessionNotification(g_hwnd); |
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|
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remove_hooks_fn(); |
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|
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FreeLibrary(hookdll); |
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|
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vchannel_close(); |
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|
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return 1; |
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} |
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