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x11vnc: XBell events, -nofb, -notruecolor, misc. cleaning

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pull/1/head
runge 21 years ago
parent 13716c3e2f
commit b7643ac9aa
4 changed files with 161 additions and 47 deletions
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6
ChangeLog
Unescape View File

@ -1,4 +1,8 @@
2003-11-07 Karl Runge
2003-12-08 Karl Runge <runge@karlrunge.com>
* add check for XKEYBOARD extension in configure.ac
* support XBell events (disable: "-nobell"), "-nofb" in x11vnc
2003-11-07 Karl Runge <runge@karlrunge.com>
* support "-inetd", "-noshm", "-flipbyteorder" in x11vnc
2003-10-26 Johannes E. Schindelin <Johannes.Schindelin@gmx.de>

4
configure.ac
Unescape View File

@ -33,7 +33,11 @@ fi
# Checks for X libraries
HAVE_X="false"
AC_PATH_XTRA
AH_TEMPLATE(HAVE_XKEYBOARD, [XKEYBOARD extension build environment present])
if test "$X_CFLAGS" != "-DX_DISPLAY_MISSING"; then
AC_CHECK_LIB(X11, XkbSelectEvents,
[AC_DEFINE(HAVE_XKEYBOARD)], ,
$X_LIBS $X_PRELIBS -lX11 $X_EXTRA_LIBS)
AC_CHECK_LIB(Xtst, XTestFakeKeyEvent, HAVE_XTEST="true",
HAVE_XTEST="false",
$X_LIBS $X_PRELIBS -lX11 -lXext $X_EXTRA_LIBS)

6
contrib/ChangeLog
Unescape View File

@ -1,3 +1,9 @@
2003-12-08 Karl Runge <runge@karlrunge.com>
* add Xbell support using XKEYBOARD extension (disable: -nobell)
* add "-nofb" to disable framebuffer, i.e. mouse + keyboard only (!)
* add "-notruecolor" to force indexed 8bpp color (when 8bpp)
* make alias "-forever" for "-many"
From Karl (x11vnc's father) on Apr 2, 2003:
New option -nocursor to not display the vncviewer local cursor if user

192
contrib/x11vnc.c
Unescape View File

@ -58,8 +58,7 @@
* possible...). So, e.g., opaque moves and similar window activity
* can be very painful; one has to modify one's behavior a bit.
*
* It currently cannot capture XBell beeps (impossible?) And, of course,
* general audio at the remote display is lost as well unless one separately
* General audio at the remote display is lost unless one separately
* sets up some audio side-channel.
*
* It does not appear possible to query the X server for the current
@ -109,6 +108,10 @@
#include <rfb/rfb.h>
#ifdef LIBVNCSERVER_HAVE_XKEYBOARD
#include <X11/XKBlib.h>
#endif
/* X and rfb framebuffer */
Display *dpy = 0;
Visual *visual;
@ -169,12 +172,15 @@ int view_only = 0; /* clients can only watch. */
int inetd = 0; /* spawned from inetd(1) */
int connect_once = 1; /* disconnect after first connection session. */
int flash_cmap = 0; /* follow installed colormaps */
int force_indexed_color = 0; /* whether to force indexed color for 8bpp */
int use_modifier_tweak = 0; /* use the altgr_keyboard modifier tweak */
int nofb = 0; /* do not send any fb updates */
int local_cursor = 1; /* whether the viewer draws a local cursor */
int show_mouse = 0; /* display a cursor for the real mouse */
int show_root_cursor = 0; /* show X when on root background */
int watch_bell = 1;
int using_shm = 1; /* whether mit-shm is used */
int flip_byte_order = 0; /* sometimes needed when using_shm = 0 */
@ -330,11 +336,11 @@ void client_gone(rfbClientPtr client) {
}
enum rfbNewClientAction new_client(rfbClientPtr client) {
static client_count = 0;
static accepted_client = 0;
last_event = last_input = time(0);
if (connect_once) {
if (screen->rfbDontDisconnect && screen->rfbNeverShared) {
if (! shared && client_count) {
if (! shared && accepted_client) {
fprintf(stderr, "denying additional client:"
" %s\n", client->host);
return(RFB_CLIENT_REFUSE);
@ -347,7 +353,7 @@ enum rfbNewClientAction new_client(rfbClientPtr client) {
} else {
client->clientData = (void *) 0;
}
client_count++;
accepted_client = 1;
return(RFB_CLIENT_ACCEPT);
}
@ -496,12 +502,12 @@ static void modifier_tweak_keyboard(rfbBool down, rfbKeySym keysym, rfbClientPtr
static void keyboard(rfbBool down, rfbKeySym keysym, rfbClientPtr client) {
KeyCode k;
if (0) {
X_LOCK;
rfbLog("keyboard(%s,%s(0x%x),client)\n",
down?"down":"up",XKeysymToString(keysym),(int)keysym);
X_UNLOCK;
}
#ifdef DebugXTestFakeKeyEvent
X_LOCK;
rfbLog("keyboard(%s,%s(0x%x),client)\n",
down?"down":"up",XKeysymToString(keysym),(int)keysym);
X_UNLOCK;
#endif
if (view_only) {
return;
@ -509,6 +515,9 @@ static void keyboard(rfbBool down, rfbKeySym keysym, rfbClientPtr client) {
if (use_modifier_tweak) {
modifier_tweak_keyboard(down, keysym, client);
X_LOCK;
XFlush(dpy);
X_UNLOCK;
return;
}
@ -554,12 +563,66 @@ static void pointer(int mask, int x, int y, rfbClientPtr client) {
}
}
if (nofb) {
XFlush(dpy);
}
X_UNLOCK;
/* remember the button state for next time: */
button_mask = mask;
}
/*
* bell event handling
*/
#ifdef LIBVNCSERVER_HAVE_XKEYBOARD
int xkb_base_event_type;
void initialize_bell_watch() {
int ir, reason;
if (! XkbSelectEvents(dpy, XkbUseCoreKbd, XkbBellNotifyMask,
XkbBellNotifyMask) ) {
fprintf(stderr, "warning: disabling bell.\n");
watch_bell = 0;
return;
}
if (! XkbOpenDisplay(DisplayString(dpy), &xkb_base_event_type, &ir,
NULL, NULL, &reason) ) {
fprintf(stderr, "warning: disabling bell.\n");
watch_bell = 0;
}
}
void watch_bell_event() {
XEvent xev;
XkbAnyEvent *xkb_ev;
int got_bell = 0;
if (! watch_bell) {
return;
}
X_LOCK;
if (! XCheckTypedEvent(dpy, xkb_base_event_type , &xev)) {
X_UNLOCK;
return;
}
xkb_ev = (XkbAnyEvent *) &xev;
if (xkb_ev->xkb_type == XkbBellNotify) {
got_bell = 1;
}
X_UNLOCK;
if (got_bell) {
rfbSendBell(screen);
}
}
#else
void watch_bell_event() {}
#endif
void mark_hint(hint_t);
/*
@ -1064,6 +1127,9 @@ void initialize_screen(int *argc, char **argv, XImage *fb) {
screen->rfbServerFormat.depth = fb->depth;
screen->rfbServerFormat.trueColour = (uint8_t) TRUE;
have_masks = (fb->red_mask|fb->green_mask|fb->blue_mask != 0);
if (force_indexed_color) {
have_masks = 0;
}
if ( ! have_masks && screen->rfbServerFormat.bitsPerPixel == 8
&& CellsOfScreen(ScreenOfDisplay(dpy,scr)) ) {
@ -2097,7 +2163,6 @@ int scan_display(int ystart, int rescan) {
void scan_for_updates() {
int i, tile_count, tile_diffs;
double frac1 = 0.1; /* tweak parameter to try a 2nd scan_display() */
for (i=0; i < ntiles; i++) {
tile_has_diff[i] = 0;
tile_tried[i] = 0;
@ -2246,11 +2311,18 @@ void watch_loop(void) {
usleep(200 * 1000);
continue;
}
if (nofb) {
continue;
}
rfbUndrawCursor(screen);
scan_for_updates();
if (watch_bell) {
watch_bell_event();
}
usleep(waitms * 1000);
cnt++;
@ -2277,63 +2349,70 @@ void print_help() {
"XXXX is typically 5900 (the default VNC port). One would next run something\n"
"like this on the local machine: \"vncviewer host:N\" where N is XXXX - 5900.\n"
"\n"
"By default x11vnc will not allow the screen to be shared and it will\n"
"exit as soon as a client disconnects. See -shared and -forever below\n"
"to override these protections.\n"
"\n"
"Options:\n"
"\n"
"-display disp X11 server display to connect to, the X server process\n"
" must be running on same machine and support MIT-SHM.\n"
"-id windowid show the window corresponding to <windowid> not the\n"
"-id windowid Show the window corresponding to <windowid> not the\n"
" entire display. Warning: bugs! new toplevels missed!...\n"
"-flashcmap in 8bpp indexed color, let the installed colormap flash\n"
"-flashcmap In 8bpp indexed color, let the installed colormap flash\n"
" as the pointer moves from window to window (slow).\n"
"-notruecolor Force 8bpp indexed color even if it looks like TrueColor.\n"
"\n"
"-viewonly clients can only watch (default %s).\n"
"-viewonly Clients can only watch (default %s).\n"
"-shared VNC display is shared (default %s).\n"
"-many keep listening for more connections rather than exiting\n"
" as soon as the first clients disconnect.\n"
"-inetd launched by inetd(1): stdio instead of listening socket.\n"
"-noshm do not use the MIT-SHM extension for the polling.\n"
"-forever Keep listening for more connections rather than exiting\n"
" as soon as the first client(s) disconnect. Same as -many\n"
"-inetd Launched by inetd(1): stdio instead of listening socket.\n"
"-noshm Do not use the MIT-SHM extension for the polling.\n"
" remote displays can be polled this way: be careful\n"
" this can use large amounts of network bandwidth.\n"
"-flipbyteorder sometimes needed if remotely polled host has different\n"
" endianness. ignored unless -noshm is set.\n"
"-flipbyteorder Sometimes needed if remotely polled host has different\n"
" endianness. Ignored unless -noshm is set.\n"
"\n"
"-q be quiet by printing less informational output.\n"
"-bg go into the background after screen setup.\n"
" something like this could be useful in a script:\n"
"-q Be quiet by printing less informational output.\n"
"-bg Go into the background after screen setup.\n"
" Something like this could be useful in a script:\n"
" port=`ssh $host \"x11vnc -display :0 -bg\" | grep PORT`\n"
" port=`echo \"$port\" | sed -e 's/PORT=//'`\n"
" port=`expr $port - 5900`\n"
" vncviewer $host:$port\n"
"\n"
"-modtweak handle AltGr/Shift modifiers for differing languages\n"
"-modtweak Handle AltGr/Shift modifiers for differing languages\n"
" between client and host (default %s).\n"
"-nomodtweak send the keysym directly to the X server.\n"
"-nomodtweak Send the keysym directly to the X server.\n"
"-nobell Do not watch for XBell events.\n"
"-nofb Ignore framebuffer: only process keyboard and pointer.\n"
"\n"
"-nocursor do not have the viewer show a local cursor.\n"
"-mouse draw a 2nd cursor at the current X pointer position.\n"
"-mouseX as -mouse, but also draw an X on root background.\n"
"-X shorthand for -mouseX -nocursor.\n"
"-nocursor Do not have the viewer show a local cursor.\n"
"-mouse Draw a 2nd cursor at the current X pointer position.\n"
"-mouseX As -mouse, but also draw an X on root background.\n"
"-X Shorthand for -mouseX -nocursor.\n"
"\n"
"-defer time time in ms to wait for updates before sending to\n"
"-defer time Time in ms to wait for updates before sending to\n"
" client [rfbDeferUpdateTime] (default %d).\n"
"-wait time time in ms to pause between screen polls. used\n"
"-wait time Time in ms to pause between screen polls. Used\n"
" to cut down on load (default %d).\n"
"-nap monitor activity and if low take longer naps between\n"
"-nap Monitor activity and if low take longer naps between\n"
" polls to really cut down load when idle (default %s).\n"
"-threads whether or not to use the threaded libvncserver\n"
"-threads Whether or not to use the threaded libvncserver\n"
"-nothreads algorithm [rfbRunEventLoop] (default %s).\n"
"\n"
"-fs f if the fraction of changed tiles in a poll is greater\n"
"-fs f If the fraction of changed tiles in a poll is greater\n"
" than f, the whole screen is updated (default %.2f).\n"
"-gaps n heuristic to fill in gaps in rows or cols of n or less\n"
" tiles. used to improve text paging (default %d).\n"
"-grow n heuristic to grow islands of changed tiles n or wider\n"
"-gaps n Heuristic to fill in gaps in rows or cols of n or less\n"
" tiles. Used to improve text paging (default %d).\n"
"-grow n Heuristic to grow islands of changed tiles n or wider\n"
" by checking the tile near the boundary (default %d).\n"
"-fuzz n tolerance in pixels to mark a tiles edges as changed\n"
"-fuzz n Tolerance in pixels to mark a tiles edges as changed\n"
" (default %d).\n"
"-hints use krfb/x0rfbserver hints (glue changed adjacent\n"
"-hints Use krfb/x0rfbserver hints (glue changed adjacent\n"
" horizontal tiles into one big rectangle) (default %s).\n"
"-nohints do not use hints; send each tile separately.\n"
"-nohints Do not use hints; send each tile separately.\n"
"%s\n"
"\n"
"These options are passed to libvncserver:\n"
@ -2398,7 +2477,7 @@ char *choose_title(char *display) {
int main(int argc, char** argv) {
XImage *fb;
int i, ev, er, maj, min;
int i, op, ev, er, maj, min;
char *use_dpy = NULL;
int dt = 0;
int bg = 0;
@ -2422,11 +2501,14 @@ int main(int argc, char** argv) {
}
} else if (!strcmp(argv[i], "-flashcmap")) {
flash_cmap = 1;
} else if (!strcmp(argv[i], "-notruecolor")) {
force_indexed_color = 1;
} else if (!strcmp(argv[i], "-viewonly")) {
view_only = 1;
} else if (!strcmp(argv[i], "-shared")) {
shared = 1;
} else if (!strcmp(argv[i], "-many")) {
} else if (!strcmp(argv[i], "-many")
|| !strcmp(argv[i], "-forever")) {
connect_once = 0;
} else if (!strcmp(argv[i], "-inetd")) {
inetd = 1;
@ -2438,6 +2520,10 @@ int main(int argc, char** argv) {
use_modifier_tweak = 1;
} else if (!strcmp(argv[i], "-nomodtweak")) {
use_modifier_tweak = 0;
} else if (!strcmp(argv[i], "-nobell")) {
watch_bell = 0;
} else if (!strcmp(argv[i], "-nofb")) {
nofb = 1;
} else if (!strcmp(argv[i], "-nocursor")) {
local_cursor = 0;
} else if (!strcmp(argv[i], "-mouse")) {
@ -2474,8 +2560,8 @@ int main(int argc, char** argv) {
use_hints = 1;
} else if (!strcmp(argv[i], "-nohints")) {
use_hints = 0;
} else if (!strcmp(argv[i], "-h")
|| !strcmp(argv[i], "-help")) {
} else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "-help")
|| !strcmp(argv[i], "-?")) {
print_help();
} else if (!strcmp(argv[i], "-q")) {
quiet = 1;
@ -2518,8 +2604,12 @@ int main(int argc, char** argv) {
fprintf(stderr, "shared: %d\n", shared);
fprintf(stderr, "inetd: %d\n", inetd);
fprintf(stderr, "conn_once: %d\n", connect_once);
fprintf(stderr, "flashcmap: %d\n", flash_cmap);
fprintf(stderr, "force_idx: %d\n", force_indexed_color);
fprintf(stderr, "using_shm: %d\n", using_shm);
fprintf(stderr, "flipbyteo: %d\n", flip_byte_order);
fprintf(stderr, "flipbytes: %d\n", flip_byte_order);
fprintf(stderr, "nofb: %d\n", nofb);
fprintf(stderr, "watchbell: %d\n", watch_bell);
fprintf(stderr, "mod_tweak: %d\n", use_modifier_tweak);
fprintf(stderr, "loc_curs: %d\n", local_cursor);
fprintf(stderr, "mouse: %d\n", show_mouse);
@ -2570,6 +2660,16 @@ int main(int argc, char** argv) {
exit(1);
}
}
#ifdef LIBVNCSERVER_HAVE_XKEYBOARD
if (watch_bell) {
if (! XkbQueryExtension(dpy, &op, &ev, &er, &maj, &min)) {
fprintf(stderr, "warning: disabling bell.\n");
watch_bell = 0;
} else {
initialize_bell_watch();
}
}
#endif
/*
* Window managers will often grab the display during resize, etc.

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