server client ------ ------ [accept] <-- connect challenge --> [encrypt] [verify] <-- response (encrypted challenge, client name) hangup if invalid query info --> <-- info (size) --- use automake --- HTTP stuff no way to save config using HTTP should have a button or a page to force save of config or just save config every time it's changed should use authentication (at least basic) --- use hostname instead of "primary", "secondary" --- add aliases in config file any alias of a screen name counts as that screen name handy for mapping FQDN <-> hostname --- win32: provide taskbar icon win32 dll: should make this as small as possible don't use standard libraries use custom _DllMainCRTStartup(); just call DllMain() from it. use /MERGE linker switch to merge sections clean up c:\winnt\synergy.sgc desktop switcher program failure when running synergy as service returns access denied from CreateDesktop() don't know why log window may prevent changing desktop should start console in a thread just for that purpose client will need to be able to retry connecting to server in case server isn't ready yet, client can camp --- bug with half-duplex keys win32 server sent num-lock to grace grace converts to half-duplex so only synthesizes key down now grace starts server and is locked to screen grace should ignore half duplex keys when seeing if locked to screen --- CClient and CServer: not checking in stop() that we're actually running must mutex m_primary/m_screen they could be NULL if in the middle of shutting down --- win32 screen saver win95 etc: keybd_event can terminate screen saver but not mouse_event keybd_event resets screen saver start timer but not mouse_event to kill screen saver (if it's known to be running): PostMessage (GetActiveWindow(), WM_CLOSE, 0, 0L); to find if screen saver is running: FindWindow ("WindowsScreenSaverClass", NULL); win nt 4: mouse_event resets screen saver start timer but not keybd_event neither can stop screen saver because it runs in a separate desktop to kill screen saver: BOOL CALLBACK KillScreenSaverFunc(HWND hwnd, LPARAM lParam) { if(IsWindowVisible(hwnd)) PostMessage(hwnd, WM_CLOSE, 0, 0); return TRUE; } HDESK hdesk; hdesk = OpenDesktop(TEXT("Screen-saver"), 0, FALSE, DESKTOP_READOBJECTS | DESKTOP_WRITEOBJECTS); if (hdesk) { EnumDesktopWindows(hdesk, KillScreenSaverFunc, 0); CloseDesktop(hdesk); } --- unix: restarting fails to connect until a user logs in: Xlib: no protocol specified this is caused by login manager all clients are rejected, except those started by manager itself workaround is to have synergy started by login manager should then use --no-restart, though that's not necessary affects client and server cannot switch screens on login screen: xdm,kdm grab keyboard for duration of login screen synergy cannot switch unless it can grab keyboard gdm doesn't appear to grab keyboard or mouse for duration affects server, only get auto-restart into platform code provide a `int(*)(void)' ptr to an auto-restart function function just forks(), calls ptr, waits, repeats may need something else on win32 or maybe just skip it --- bug in updating screens saw a goofy set of screens after update i think the config was similar to: A B C D E --- not handling international characters --- not handling screen saver at all yet --- not distinguishing between caps lock and shift lock In Caps Lock mode, the alphabetic keys send their uppercase (shifted) char- acter when pressed alone. For Caps Lock mode, pressing and releasing the lock key turns on the mode and pressing and releasing the lock key again turns off the mode. In Shift Lock mode, all keys on the main keypad send their shifted character when pressed alone. For Shift Lock mode, pressing and releasing the Lock key turns on the mode, and pressing and releasing either the Lock or the Shift key turns off the mode. --- currently sending all clipboards to all clients some clients may not need all clipboards add filtering mechanism --- sometimes not sending correct clipboard some kind of race condition i think can select text then switch and get empty clipboard switching back to owner screen then out gets correct clipboard dunno if this is still a problem --- win32 not sending correct clipboard got 43 bytes sent for a 3 byte selection remaining bytes were 0 problem persisted; also got 43 bytes for a 2 byte selection --- need timeout on CXWindowsClipboard::CReply objects should flush replies that are too old assumption is that requestor is broken --- inconsistencies exceptions using getWhat() in some places to return a code, elsewhere returns message references/pointers should use pointers for any in/out parameter but using references in some places --- win32 hook DLL sometimes not unloaded when server is killed? will get assertion on restart as if DLL was still loaded. can tell because all DLL copies share data segment. should prevent multiple copies from loading (or initializing) replace asserts with (multithread locked) check of variables return 0 if busy server must handle failure try to figure out why it's not unloading --- test: X primary ctrl+alt+keypad_add, ctrl+alt_keypad_minus -> eaten by primary X server ctrl+alt+backspace probably eaten by primary X server if so configured ctrl+alt+delete probably eaten locally probably underneath primary X server too Win32 desktop -> X laptop eaten global hot keys: ctrl+alt+delete -> task manager (or logon or reboot) alt+[shift+]tab -> cycle through tasks alt+[shift+]esc -> cycle windows ctrl+esc -> start menu windows+R -> run dialog windows+M -> minimize all windows+shift+M -> undo minimize all windows+F1 -> help windows+E -> explorer windows+F -> find files windows+ctrl+F -> find computer windows+tab -> cycle through taskbar buttons windows+break -> system properties not eaten: alt+space -> system menu shift+F10 -> context menu app key -> context menu misc: accessibility shortcuts: not eaten but dialogs appear anyway X laptop -> Win32 desktop check: shift+tab -> okay alt+[shift+]tab -> okay alt+[shift+]esc -> okay ctrl+esc -> start menu -> okay ctrl+esc, esc, shift+F10 -> toolbar context menu -> okay F10 -> activate menu in explorer -> okay shift+F10 -> context menu -> okay alt+space -> context menu -> okay alt+hyphen -> MDI window menu -> okay alt+letter -> open corresponding menu -> okay alt+F6 -> switch between windows in single program -> okay shift+insert CD-ROM -> bypass auto-run check accessibility shortcuts -> does not work check accessibility features sticky keys -> no filter keys -> no toggle keys -> no mouse keys -> no high contrast -> no X desktop -> win32 check: shift+tab windows+R -> run dialog windows+M -> minimize all windows+shift+M -> minimize all windows+F1 -> help windows+E -> explorer windows+F -> find files windows+ctrl+F -> find computer windows+tab -> cycle through taskbar buttons windows+break -> system properties app key -> context menu Win32 -> Win32 alt+F6 -> eaten (isabel to audrey, but not audrey to isabel) check accessibility shortcuts work on secondary check accessibility features work on secondary --- audrey->isabel num-lock light on isabel doesn't respond to generated events. seems to be linked to something lower-level. however, keytest does report num-lock keyboard state is being toggled. other toggle lights don't always respond immediately usually go on/off when active window changes though --- avoid fullscreen transparent window on win32 using CBT hook to discard activation/focus messages but it's not being called when we lose keyboard input also, we sometimes don't get the keyboard input to start with --- keyboard hook problems (win32) now passing keyboard events through in most cases this fixes problem on isabel where toggle lights don't toggle and num-lock behaved incorrectly (generated wrong keys). seems the DefWindowProc() needed to process the keys unfortunately, keys sometimes leak into wrong app. seems related to times when we don't get the keyboard input. key events are not delivered to app on primary until cursor returns to primary. no idea how that's possible. current have some code to check active window and reset it in keyboard hook. that code doesn't work. seem to be having problems with windows key now, too. looks like a down is sent but not the corresponding up so secondary system thinks the key is always down. --- try to determine keyboard quirks automatically in particular, set the half-duplex flags maybe KBD extension will help determine this --- key events sent to console on win me (95/98?) are very slow 1/4 to 1/2 second delay before key up is processed key up log message is also delayed console causing a system-wide delay? --- adjust thread priorities on win32 maybe remove changes altogether currently isabel starts single-stepping mouse when dragging window sometimes it goes normal speed but it's mostly very slow even a very high priority doesn't seem to help haven't tried real-time priority a very high priority on client fixes delay when typeing into console is it the output console causing the slowness? --- must send up key events when leaving screen for keys still down some key combos get eaten and the key ups aren't sent e.g. ctrl+alt+del on win2k to grace mouse is forced back to to win2k ctrl and alt up not sent to grace grace thinks ctrl and alt are down 'til user physically press/releases them --- Accessibility Shortcuts Key Result ------------------------------------------------------------------- Tap SHIFT 5 times Toggles StickyKeys on and off. Press down and hold the right Toggles FilterKeys on and off. SHIFT key for 8 seconds Press down and hold the NUM LOCK Toggles ToggleKeys on and off. key for 5 seconds Left ALT+left SHIFT+NUM LOCK Toggles MouseKeys on and off. Left ALT+left SHIFT+PRINT SCREEN Toggles High Contrast on and off. --- disable ctrl+alt+del info: SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, TRUE, &dummy, 0) fools system into thinking screen saver is running that disables ctrl+alt+del, alt+tab, ctrl+esc dunno if keystrokes are queued may be limited to win 95/98/me win nt sp 3 and above: low-level keyboard hook is called before ctrl+esc, alt+tab, alt+esc use that to capture and disable seems that low-level hook is notified of ctrl+alt+del but can't stop it win nt sp 2 and below ctrl+esc can be disabled by replacing task manager (dunno how) RegisterHotKey() can be used to catch alt+tab and alt+esc only while app is running, of course win nt keyboard filter driver can capture keys (see win NT DDK) http://216.239.51.100/search?q=cache:q-f03UHhFMMC:www.thescarms.com/VBasic/StopReBoot.asp+alt%2Btab+disable&hl=en some info on changing keyboard scan code mapping can be used to disable keys but looks like reboot is required --- Q179905 suggestion for bypassing hook code when called by debugger. may prevent system from getting locked up when debugging. --- how is CTCPSocket::connect() able to cancel? looks like it can't make it asynchronous and use poll() to wait for connection use testCancel() to make it cancellable --- win32 rel notes: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Windows\NoInteractiveServices can prevent an interactive service from running interactively. how can we tell if we're not running interactively? even if not interactive we can use MessageBox() to alert user use MB_SERVICE_NOTIFICATION flag must use a separate thread in initialization if called from handler must close dialog if CTRL_LOGOFF_EVENT is received see SetConsoleCtrlHandler() and CLog (which uses it) maybe possible to get around NoInteractiveServices modify DACLs on windows station/desktops to impersonate logged on user see "Interacting with the User by a Win32 Service"