server client ------ ------ [accept] <-- connect challenge --> [encrypt] [verify] <-- response (encrypted challenge, client name) hangup if invalid query info --> <-- info (size) --- use automake use doxygen --- 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) provide way to kill/restart server via HTTP provide way to query why locked to screen? handy for debugging at least --- make generic input devices? replace mouse and keyboard with button and valuator devices? could fairly easily add new devices then valuators would have to come in groups that change together mouse position would be two ganged valuators key events are not simply button presses though they have a non-boolean character, shift state, and repeat count maybe another device type: {data, state, repeat} must handle on-the-fly addition/removal of devices USB allows hotplugging and we should support, say, an added joystick must have device negotiation at very least it negotiates mouse/keyboard at start --- should add clipboard data type format negotiation server sends permitted data type formats client responds with known formats in permitted list client must only send permitted formats server can discard non-permitted formats server must only send known, permitted formats to client formats are names of the form [a-zA-Z0-9_/]+ server must be able to translate between all permitted formats example: text formats: text/plain/CRLF -- windows plain text text/plain/LF -- unix plain text text/plain/CR -- mac plain text text/rtf -- rich text (does that require a particular newline?) or image formats: image/BMP image/RAW image/XPM this will allow future versions to interoperate better. it also allows compatibility with versions that are identical except for the support clipboard formats, obviating bumping up the protocol version number. --- hot keys should have keyboard shortcuts to jump to screens --- win32: need icon provide taskbar icon provide control panel? 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 win32 service: need message table for proper event reporting clean up c:\winnt\synergy.sgc desktop switcher program failure when running synergy as service returns access denied from CreateDesktop() don't know why --- 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 --- 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 --- bug in updating screens saw a goofy set of screens after update i think the config was similar to: A B C D E --- should switch to user nobody (or something similar) if running as root for security reasons will make it impossible to overwrite /etc/synergy.conf if that file is only root writable (as it should be) --- Xsetup file may have to kill previous synergy or synergy should exit if there's already a synergy running --- not handling international characters --- screen saver won't lock screen if on secondary screen because synergy has mouse/keyboard grabbed synergy will immediately release grabs when screen saver activates but looks like xscreensaver wont map window until it grabs --- 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 jumping too far into secondary screen probably bogus delta (adding in center pixel coords into delta?) this is with an X primary and secondary don't know which matters but probably X primary --- not handling large motif selections there must be a limit because properties can only be so big don't know protocol for transfer, though --- 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 --- 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? --- results: 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 --- 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. --- 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" --- unix release notes: 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 === feedback === send all toggle states instead of (individual) toggle ups/downs (gspencer) Actually, Teleffect already does that too, but what I meant was that each time the state of a "toggle" key (caps lock, scroll lock, num lock) changes on the master, I think it should force the client to take on that state, instead of just toggling on the client. That way when Word (on the client) helpfullly turns off the caps lock, it doesn't get toggled back on when I turn off the caps lock on the master. Ideally, it would just notice that Word turned off the caps lock on the client and turn it off on the master (and all other clients) too, but I think that's probably too complicated to implement. dragging windows is too slow grace (as client) exhibits this dunno if it happens with audrey2 as the client liz says her windows laptop does it too double clicking NT binaries fails (liz) add note to README or use separate binaries for services. client would also need a dialog to query options. server would probably need one too. use dialogs if there are no command line args. how to exit (liz) no good way to exit on windows win32 console disappears too quickly (liz) maybe show a message box if exiting to due an error better support for reloading configuration (liz) use SIGHUP on unix use an app message on win32 provide access through a control panel or taskbar icon non-functional on ctrl+alt+del screen in win2k (kurt) i suppose it must be when win2k is the client. mouse input wasn't working. keyboard probably didn't work either. --- automake stuff rebuild: * 'autoheader' - creates config.h.in * 'touch NEWS README AUTHORS ChangeLog' * 'touch stamp-h' * aclocal - adds aclocal.m4 to directory. Defines some m4 macros used by the auto tools. * 'autoconf '- creates configure from configure.in * 'automake' - Creates Makefile.in from Makefile.am * './configure' - creates Makefile from Makefile.in * 'make' funky functions: snprintf -- ick! some return negative value -- no problem some return truncated length -- uh oh some return buffer length without truncation -- huh? some actually overrun the buffer -- must not build on those! use AC_LIBOBJ(function) for missing/broken functions adds function.c to build must add @LIBOBJS@ to *_LIBADD or AC_REPLACE_FUNCS(function ...) automatically calls AC_LIBOBJ for missing functions use AC_CHECK_FUNC or AC_CHECK_FUNCS to detect missing functions use AC_CHECK_LIB first if function not in std C lib maybe AC_CHECK_TYPE for size_t and ssize_t replace sys/time.h with: #if TIME_WITH_SYS_TIME # include # include #else # if HAVE_SYS_TIME_H # include # else # include # endif #endif what does `make install' do? check in derived files? aclocal.m4 config.h.in configure used library functions: accept bind chdir close connect dup fork fprintf getenv gethostbyaddr gethostbyname gethostname getpeername getprotobyname getprotobynumber getservbyname getservbyport getsockname getsockopt gettimeofday inet_addr inet_ntoa ioctl listen memcpy memmove memset nanosleep open openlog poll read recv recvfrom send sendto setsid setsockopt shutdown sigaction sigaddset sigemptyset socket sprintf strcat strcmp strerror strrchr syslog umask vsnprintf write included files #include #include #include #include #include #include #include #include #include #include #include #include #include these put stuff in std::. replace with .h versions or use std::? 3 #include 3 #include 1 #include 3 #include 4 #include 12 #include 1 #include can we use AC_REPLACE_FUNCS and only build the missing function files in a single directory. do we have to have a separate configure.in script to do that?