| /* |
| Copyright (C) 2002-2010 Karl J. Runge <runge@karlrunge.com> |
| All rights reserved. |
| |
| This file is part of x11vnc. |
| |
| x11vnc 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. |
| |
| x11vnc 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 x11vnc; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA |
| or see <http://www.gnu.org/licenses/>. |
| |
| In addition, as a special exception, Karl J. Runge |
| gives permission to link the code of its release of x11vnc with the |
| OpenSSL project's "OpenSSL" library (or with modified versions of it |
| that use the same license as the "OpenSSL" library), and distribute |
| the linked executables. You must obey the GNU General Public License |
| in all respects for all of the code used other than "OpenSSL". If you |
| modify this file, you may extend this exception to your version of the |
| file, but you are not obligated to do so. If you do not wish to do |
| so, delete this exception statement from your version. |
| */ |
| |
| /* -- xevents.c -- */ |
| |
| #include "x11vnc.h" |
| #include "xwrappers.h" |
| #include "xkb_bell.h" |
| #include "xrandr.h" |
| #include "xdamage.h" |
| #include "xrecord.h" |
| #include "selection.h" |
| #include "keyboard.h" |
| #include "cursor.h" |
| #include "gui.h" |
| #include "connections.h" |
| #include "unixpw.h" |
| #include "cleanup.h" |
| #include "macosx.h" |
| #include "screen.h" |
| #include "pm.h" |
| #include "pointer.h" |
| #include "remote.h" |
| #include "inet.h" |
| |
| /* XXX CHECK BEFORE RELEASE */ |
| int grab_buster = 0; |
| int grab_kbd = 0; |
| int grab_ptr = 0; |
| int grab_always = 0; |
| int ungrab_both = 0; |
| int grab_local = 0; |
| int sync_tod_delay = 20; |
| |
| void initialize_vnc_connect_prop(void); |
| void initialize_x11vnc_remote_prop(void); |
| void initialize_clipboard_atom(void); |
| void spawn_grab_buster(void); |
| void sync_tod_with_servertime(void); |
| void check_keycode_state(void); |
| void check_autorepeat(void); |
| void set_prop_atom(Atom atom); |
| void check_xevents(int reset); |
| void xcut_receive(char *text, int len, rfbClientPtr cl); |
| |
| void kbd_release_all_keys(rfbClientPtr cl); |
| void set_single_window(rfbClientPtr cl, int x, int y); |
| void set_server_input(rfbClientPtr cl, int s); |
| void set_text_chat(rfbClientPtr cl, int l, char *t); |
| int get_keyboard_led_state_hook(rfbScreenInfoPtr s); |
| int get_file_transfer_permitted(rfbClientPtr cl); |
| void get_prop(char *str, int len, Atom prop, Window w); |
| int guess_dm_gone(int t1, int t2); |
| |
| static void initialize_xevents(int reset); |
| static void print_xevent_bases(void); |
| static void bust_grab(int reset); |
| static int process_watch(char *str, int parent, int db); |
| static void grab_buster_watch(int parent, char *dstr); |
| |
| |
| void initialize_vnc_connect_prop(void) { |
| char *prop_str; |
| vnc_connect_str[0] = '\0'; |
| RAWFB_RET_VOID |
| #if !NO_X11 |
| prop_str = getenv("VNC_CONNECT"); |
| if (prop_str == NULL) { |
| prop_str = "VNC_CONNECT"; |
| } |
| vnc_connect_prop = XInternAtom(dpy, "VNC_CONNECT", False); |
| #endif |
| } |
| |
| void initialize_x11vnc_remote_prop(void) { |
| char *prop_str; |
| x11vnc_remote_str[0] = '\0'; |
| RAWFB_RET_VOID |
| #if !NO_X11 |
| prop_str = getenv("X11VNC_REMOTE"); |
| if (prop_str == NULL) { |
| prop_str = "X11VNC_REMOTE"; |
| } |
| x11vnc_remote_prop = XInternAtom(dpy, prop_str, False); |
| #endif |
| } |
| |
| void initialize_clipboard_atom(void) { |
| RAWFB_RET_VOID |
| #if NO_X11 |
| return; |
| #else |
| clipboard_atom = XInternAtom(dpy, "CLIPBOARD", False); |
| if (clipboard_atom == None) { |
| if (! quiet) rfbLog("could not find atom CLIPBOARD\n"); |
| if (watch_clipboard) { |
| watch_clipboard = 0; |
| } |
| if (set_clipboard) { |
| set_clipboard = 0; |
| } |
| } |
| #endif /* NO_X11 */ |
| } |
| |
| /* |
| we observed these strings: |
| |
| 6 gdm_string: Gnome-power-manager |
| 6 gdm_string: Gnome-session |
| 6 gdm_string: Gnome-settings-daemon |
| 6 gdm_string: Login Window |
| 6 gdm_string: Notify-osd |
| 6 gdm_string: Panel |
| 12 gdm_string: Metacity |
| 12 gdm_string: gnome-power-manager |
| 12 gdm_string: gnome-session |
| 12 gdm_string: gnome-settings-daemon |
| 12 gdm_string: notify-osd |
| 18 gdm_string: Gdm-simple-greeter |
| 24 gdm_string: metacity |
| 36 gdm_string: gdm-simple-greeter |
| |
| kdmgreet |
| Kdmgreet |
| */ |
| |
| static int dm_string(char *str) { |
| char *s = getenv("DEBUG_WM_RUNNING"); |
| if (str == NULL) { |
| return 0; |
| } |
| if (str[0] == '\0') { |
| return 0; |
| } |
| if (0) fprintf(stderr, "dm_string: %s\n", str); |
| if (strstr(str, "gdm-") == str || strstr(str, "Gdm-") == str) { |
| if (strstr(str, "-greeter") != NULL) { |
| if (s) rfbLog("dm_string: %s\n", str); |
| return 1; |
| } |
| } |
| if (!strcmp(str, "kdmgreet") || !strcmp(str, "Kdmgreet")) { |
| if (s) rfbLog("dm_string: %s\n", str); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int dm_still_running(void) { |
| #if NO_X11 |
| return 0; |
| #else |
| Window r, parent; |
| Window *winlist; |
| unsigned int nc; |
| int rc, i; |
| static XClassHint *classhint = NULL; |
| XErrorHandler old_handler; |
| int saw_gdm_name = 0; |
| |
| /* some times a window can go away before we get to it */ |
| trapped_xerror = 0; |
| old_handler = XSetErrorHandler(trap_xerror); |
| |
| if (! classhint) { |
| classhint = XAllocClassHint(); |
| } |
| |
| /* we are xlocked. */ |
| rc = XQueryTree_wr(dpy, DefaultRootWindow(dpy), &r, &parent, &winlist, &nc); |
| if (!rc || winlist == NULL || nc == 0) { |
| nc = 0; |
| } |
| for (i=0; i < (int) nc; i++) { |
| char *name = NULL; |
| Window w = winlist[i]; |
| if (XFetchName(dpy, w, &name) && name != NULL) { |
| saw_gdm_name += dm_string(name); |
| XFree_wr(name); |
| } |
| classhint->res_name = NULL; |
| classhint->res_class = NULL; |
| if (XGetClassHint(dpy, w, classhint)) { |
| name = classhint->res_name; |
| if (name != NULL) { |
| saw_gdm_name += dm_string(name); |
| XFree_wr(name); |
| } |
| name = classhint->res_class; |
| if (name != NULL) { |
| saw_gdm_name += dm_string(name); |
| XFree_wr(name); |
| } |
| } |
| if (saw_gdm_name > 0) { |
| break; |
| } |
| } |
| if (winlist != NULL) { |
| XFree_wr(winlist); |
| } |
| |
| XSync(dpy, False); |
| XSetErrorHandler(old_handler); |
| trapped_xerror = 0; |
| |
| return saw_gdm_name; |
| #endif |
| } |
| |
| static int wm_running(void) { |
| char *s = getenv("DEBUG_WM_RUNNING"); |
| int ret = 0; |
| RAWFB_RET(0) |
| #if NO_X11 |
| return 0; |
| #else |
| /* |
| * Unfortunately with recent GDM (v2.28), they run gnome-session, |
| * dbus-launch, and metacity for the Login greeter! So the simple |
| * XInternAtom checks below no longer work. |
| * We also see a similar thing with KDE. |
| */ |
| if (dm_still_running()) { |
| return 0; |
| } |
| |
| /* we are xlocked. */ |
| if (XInternAtom(dpy, "_NET_SUPPORTED", True) != None) { |
| if (s) rfbLog("wm is running (_NET_SUPPORTED).\n"); |
| ret++; |
| } |
| if (XInternAtom(dpy, "_WIN_PROTOCOLS", True) != None) { |
| if (s) rfbLog("wm is running (_WIN_PROTOCOLS).\n"); |
| ret++; |
| } |
| if (XInternAtom(dpy, "_XROOTPMAP_ID", True) != None) { |
| if (s) rfbLog("wm is running (_XROOTPMAP_ID).\n"); |
| ret++; |
| } |
| if (XInternAtom(dpy, "_MIT_PRIORITY_COLORS", True) != None) { |
| if (s) rfbLog("wm is running (_MIT_PRIORITY_COLORS).\n"); |
| ret++; |
| } |
| if (!ret) { |
| if (s) rfbLog("wm is not running.\n"); |
| return 0; |
| } else { |
| if (s) rfbLog("wm is running ret=%d.\n", ret); |
| return 1; |
| } |
| #endif /* NO_X11 */ |
| |
| } |
| |
| int guess_dm_gone(int t1, int t2) { |
| int wait = t2; |
| char *avoid = getenv("X11VNC_AVOID_WINDOWS"); |
| time_t tcheck = last_client; |
| |
| if (last_open_xdisplay > last_client) { |
| /* better time for -display WAIT:... */ |
| tcheck = last_open_xdisplay; |
| } |
| |
| if (avoid && !strcmp(avoid, "never")) { |
| return 1; |
| } |
| if (!screen || !screen->clientHead) { |
| return 0; |
| } |
| if (avoid) { |
| int n = atoi(avoid); |
| if (n > 1) { |
| wait = n; |
| } else { |
| wait = 90; |
| } |
| } else { |
| static time_t saw_wm = 0; |
| |
| wait = t2; |
| |
| X_LOCK; |
| if (wm_running()) { |
| if (saw_wm == 0) { |
| saw_wm = time(NULL); |
| } else if (time(NULL) <= saw_wm + 2) { |
| /* try to wait a few seconds after transition */ |
| ; |
| } else { |
| wait = t1; |
| } |
| } |
| X_UNLOCK; |
| } |
| if (getenv("DEBUG_WM_RUNNING")) { |
| rfbLog("guess_dm_gone: wait=%d\n", wait); |
| } |
| /* we assume they've logged in OK after wait seconds... */ |
| if (time(NULL) <= tcheck + wait) { |
| return 0; |
| } |
| return 1; |
| } |
| |
| static void initialize_xevents(int reset) { |
| #if NO_X11 |
| RAWFB_RET_VOID |
| if (!reset) {} |
| return; |
| #else |
| static int did_xselect_input = 0; |
| static int did_xcreate_simple_window = 0; |
| static int did_vnc_connect_prop = 0; |
| static int did_x11vnc_remote_prop = 0; |
| static int did_clipboard_atom = 0; |
| static int did_xfixes = 0; |
| static int did_xdamage = 0; |
| static int did_xrandr = 0; |
| |
| RAWFB_RET_VOID |
| |
| if (reset) { |
| did_xselect_input = 0; |
| did_xcreate_simple_window = 0; |
| did_vnc_connect_prop = 0; |
| did_x11vnc_remote_prop = 0; |
| did_clipboard_atom = 0; |
| did_xfixes = 0; |
| did_xdamage = 0; |
| did_xrandr = 0; |
| } |
| |
| if ((watch_selection || vnc_connect) && !did_xselect_input) { |
| /* |
| * register desired event(s) for notification. |
| * PropertyChangeMask is for CUT_BUFFER0 changes. |
| * XXX: does this cause a flood of other stuff? |
| */ |
| X_LOCK; |
| xselectinput_rootwin |= PropertyChangeMask; |
| XSelectInput_wr(dpy, rootwin, xselectinput_rootwin); |
| |
| if (subwin && freeze_when_obscured) { |
| XSelectInput_wr(dpy, subwin, VisibilityChangeMask); |
| } |
| X_UNLOCK; |
| did_xselect_input = 1; |
| } |
| if (watch_selection && !did_xcreate_simple_window) { |
| /* create fake window for our selection ownership, etc */ |
| |
| /* |
| * We try to delay creating selwin until we are past |
| * any GDM, (or other KillInitClients=true) manager. |
| */ |
| if (guess_dm_gone(8, 45)) { |
| X_LOCK; |
| selwin = XCreateSimpleWindow(dpy, rootwin, 3, 2, 1, 1, 0, 0, 0); |
| X_UNLOCK; |
| did_xcreate_simple_window = 1; |
| if (! quiet) rfbLog("created selwin: 0x%lx\n", selwin); |
| } |
| } |
| |
| if ((xrandr || xrandr_maybe) && !did_xrandr) { |
| initialize_xrandr(); |
| did_xrandr = 1; |
| } |
| if (vnc_connect && !did_vnc_connect_prop) { |
| initialize_vnc_connect_prop(); |
| did_vnc_connect_prop = 1; |
| } |
| if (vnc_connect && !did_x11vnc_remote_prop) { |
| initialize_x11vnc_remote_prop(); |
| did_x11vnc_remote_prop = 1; |
| } |
| if (run_gui_pid > 0) { |
| kill(run_gui_pid, SIGUSR1); |
| run_gui_pid = 0; |
| } |
| if (!did_clipboard_atom) { |
| initialize_clipboard_atom(); |
| did_clipboard_atom = 1; |
| } |
| if (xfixes_present && use_xfixes && !did_xfixes) { |
| /* |
| * We try to delay creating initializing xfixes until |
| * we are past the display manager, due to Xorg bug: |
| * http://bugs.freedesktop.org/show_bug.cgi?id=18451 |
| */ |
| if (guess_dm_gone(8, 45)) { |
| initialize_xfixes(); |
| did_xfixes = 1; |
| if (! quiet) rfbLog("called initialize_xfixes()\n"); |
| } |
| } |
| if (xdamage_present && !did_xdamage) { |
| initialize_xdamage(); |
| did_xdamage = 1; |
| } |
| #endif /* NO_X11 */ |
| } |
| |
| static void print_xevent_bases(void) { |
| fprintf(stderr, "X event bases: xkb=%d, xtest=%d, xrandr=%d, " |
| "xfixes=%d, xdamage=%d, xtrap=%d\n", xkb_base_event_type, |
| xtest_base_event_type, xrandr_base_event_type, |
| xfixes_base_event_type, xdamage_base_event_type, |
| xtrap_base_event_type); |
| fprintf(stderr, " MapNotify=%d, ClientMsg=%d PropNotify=%d " |
| "SelNotify=%d, SelRequest=%d\n", MappingNotify, ClientMessage, |
| PropertyNotify, SelectionNotify, SelectionRequest); |
| fprintf(stderr, " SelClear=%d, Expose=%d\n", SelectionClear, Expose); |
| } |
| |
| void get_prop(char *str, int len, Atom prop, Window w) { |
| int i; |
| #if !NO_X11 |
| Atom type; |
| int format, slen, dlen; |
| unsigned long nitems = 0, bytes_after = 0; |
| unsigned char* data = NULL; |
| #endif |
| |
| for (i=0; i<len; i++) { |
| str[i] = '\0'; |
| } |
| if (prop == None) { |
| return; |
| } |
| |
| RAWFB_RET_VOID |
| |
| #if NO_X11 |
| return; |
| #else |
| |
| slen = 0; |
| if (w == None) { |
| w = DefaultRootWindow(dpy); |
| } |
| |
| do { |
| if (XGetWindowProperty(dpy, w, |
| prop, nitems/4, len/16, False, |
| AnyPropertyType, &type, &format, &nitems, &bytes_after, |
| &data) == Success) { |
| |
| dlen = nitems * (format/8); |
| if (slen + dlen > len) { |
| /* too big */ |
| XFree_wr(data); |
| break; |
| } |
| memcpy(str+slen, data, dlen); |
| slen += dlen; |
| str[slen] = '\0'; |
| XFree_wr(data); |
| } |
| } while (bytes_after > 0); |
| #endif /* NO_X11 */ |
| } |
| |
| static void bust_grab(int reset) { |
| #if NO_X11 |
| if (!reset) {} |
| return; |
| #else |
| static int bust_count = 0; |
| static time_t last_bust = 0; |
| time_t now = time(NULL); |
| KeyCode key; |
| int button, x, y, nb; |
| |
| if (now > last_bust + 180) { |
| bust_count = 0; |
| } |
| if (reset) { |
| bust_count = 0; |
| return; |
| } |
| |
| x = 0; |
| y = 0; |
| button = 0; |
| key = NoSymbol; |
| |
| nb = 8; |
| if (bust_count >= 3 * nb) { |
| fprintf(stderr, "too many bust_grab's %d for me\n", bust_count); |
| exit(0); |
| } |
| if (bust_count % nb == 0) { |
| button = 1; |
| } else if (bust_count % nb == 1) { |
| button = 1; |
| } else if (bust_count % nb == 2) { |
| key = XKeysymToKeycode(dpy, XK_Escape); |
| } else if (bust_count % nb == 3) { |
| button = 3; |
| } else if (bust_count % nb == 4) { |
| key = XKeysymToKeycode(dpy, XK_space); |
| } else if (bust_count % nb == 5) { |
| x = bust_count * 23; |
| y = bust_count * 17; |
| } else if (bust_count % nb == 5) { |
| button = 2; |
| } else if (bust_count % nb == 6) { |
| key = XKeysymToKeycode(dpy, XK_a); |
| } |
| |
| if (key == NoSymbol) { |
| key = XKeysymToKeycode(dpy, XK_a); |
| if (key == NoSymbol) { |
| button = 1; |
| } |
| } |
| |
| bust_count++; |
| |
| if (button) { |
| /* try button press+release */ |
| fprintf(stderr, "**bust_grab: button%d %.4f\n", |
| button, dnowx()); |
| XTestFakeButtonEvent_wr(dpy, button, True, CurrentTime); |
| XFlush_wr(dpy); |
| usleep(50 * 1000); |
| XTestFakeButtonEvent_wr(dpy, button, False, CurrentTime); |
| } else if (x > 0) { |
| /* try button motion*/ |
| int scr = DefaultScreen(dpy); |
| |
| fprintf(stderr, "**bust_grab: x=%d y=%d %.4f\n", x, y, |
| dnowx()); |
| XTestFakeMotionEvent_wr(dpy, scr, x, y, CurrentTime); |
| XFlush_wr(dpy); |
| usleep(50 * 1000); |
| |
| /* followed by button press */ |
| button = 1; |
| fprintf(stderr, "**bust_grab: button%d\n", button); |
| XTestFakeButtonEvent_wr(dpy, button, True, CurrentTime); |
| XFlush_wr(dpy); |
| usleep(50 * 1000); |
| XTestFakeButtonEvent_wr(dpy, button, False, CurrentTime); |
| } else { |
| /* try Escape or Space press+release */ |
| fprintf(stderr, "**bust_grab: keycode: %d %.4f\n", |
| (int) key, dnowx()); |
| XTestFakeKeyEvent_wr(dpy, key, True, CurrentTime); |
| XFlush_wr(dpy); |
| usleep(50 * 1000); |
| XTestFakeKeyEvent_wr(dpy, key, False, CurrentTime); |
| } |
| XFlush_wr(dpy); |
| last_bust = time(NULL); |
| #endif /* NO_X11 */ |
| } |
| |
| typedef struct _grabwatch { |
| int pid; |
| int tick; |
| unsigned long time; |
| time_t change; |
| } grabwatch_t; |
| #define GRABWATCH 16 |
| |
| static int grab_buster_delay = 20; |
| static pid_t grab_buster_pid = 0; |
| |
| static int grab_npids = 1; |
| |
| static int process_watch(char *str, int parent, int db) { |
| int i, pid, ticker, npids; |
| char diff[128]; |
| unsigned long xtime; |
| static grabwatch_t watches[GRABWATCH]; |
| static int first = 1; |
| time_t now = time(NULL); |
| static time_t last_bust = 0; |
| int too_long, problems = 0; |
| |
| if (first) { |
| for (i=0; i < GRABWATCH; i++) { |
| watches[i].pid = 0; |
| watches[i].tick = 0; |
| watches[i].time = 0; |
| watches[i].change = 0; |
| } |
| first = 0; |
| } |
| |
| /* record latest value of prop */ |
| if (str && *str != '\0') { |
| if (sscanf(str, "%d/%d/%lu/%s", &pid, &ticker, &xtime, diff) |
| == 4) { |
| int got = -1, free = -1; |
| |
| if (db) fprintf(stderr, "grab_buster %d - %d - %lu - %s" |
| "\n", pid, ticker, xtime, diff); |
| |
| if (pid == parent && !strcmp(diff, "QUIT")) { |
| /* that's it. */ |
| return 0; |
| } |
| if (pid == 0 || ticker == 0 || xtime == 0) { |
| /* bad prop read. */ |
| goto badtickerstr; |
| } |
| for (i=0; i < GRABWATCH; i++) { |
| if (watches[i].pid == pid) { |
| got = i; |
| break; |
| } |
| if (free == -1 && watches[i].pid == 0) { |
| free = i; |
| } |
| } |
| if (got == -1) { |
| if (free == -1) { |
| /* bad news */; |
| free = GRABWATCH - 1; |
| } |
| watches[free].pid = pid; |
| watches[free].tick = ticker; |
| watches[free].time = xtime; |
| watches[free].change = now; |
| if (db) fprintf(stderr, "grab_buster free slot: %d\n", free); |
| } else { |
| if (db) fprintf(stderr, "grab_buster got slot: %d\n", got); |
| if (watches[got].tick != ticker) { |
| watches[got].change = now; |
| } |
| if (watches[got].time != xtime) { |
| watches[got].change = now; |
| } |
| watches[got].tick = ticker; |
| watches[got].time = xtime; |
| } |
| } else { |
| if (db) fprintf(stderr, "grab_buster bad prop str: %s\n", str); |
| } |
| } |
| |
| badtickerstr: |
| |
| too_long = grab_buster_delay; |
| if (too_long < 3 * sync_tod_delay) { |
| too_long = 3 * sync_tod_delay; |
| } |
| |
| npids = 0; |
| for (i=0; i < GRABWATCH; i++) { |
| if (watches[i].pid) { |
| npids++; |
| } |
| } |
| grab_npids = npids; |
| if (npids > 4) { |
| npids = 4; |
| } |
| |
| /* now check everyone we are tracking */ |
| for (i=0; i < GRABWATCH; i++) { |
| int fac = 1; |
| if (!watches[i].pid) { |
| continue; |
| } |
| if (watches[i].change == 0) { |
| watches[i].change = now; /* just to be sure */ |
| continue; |
| } |
| |
| pid = watches[i].pid; |
| |
| if (pid != parent) { |
| fac = 2; |
| } |
| if (npids > 0) { |
| fac *= npids; |
| } |
| |
| if (now > watches[i].change + fac*too_long) { |
| int process_alive = 1; |
| |
| fprintf(stderr, "grab_buster: problem with pid: " |
| "%d - %d/%d/%d\n", pid, (int) now, |
| (int) watches[i].change, too_long); |
| |
| if (kill((pid_t) pid, 0) != 0) { |
| if (1 || errno == ESRCH) { |
| process_alive = 0; |
| } |
| } |
| |
| if (!process_alive) { |
| watches[i].pid = 0; |
| watches[i].tick = 0; |
| watches[i].time = 0; |
| watches[i].change = 0; |
| fprintf(stderr, "grab_buster: pid gone: %d\n", |
| pid); |
| if (pid == parent) { |
| /* that's it */ |
| return 0; |
| } |
| } else { |
| int sleep = sync_tod_delay * 1000 * 1000; |
| |
| bust_grab(0); |
| problems++; |
| last_bust = now; |
| usleep(1 * sleep); |
| break; |
| } |
| } |
| } |
| |
| if (!problems) { |
| bust_grab(1); |
| } |
| return 1; |
| } |
| |
| static void grab_buster_watch(int parent, char *dstr) { |
| #if NO_X11 |
| RAWFB_RET_VOID |
| if (!parent || !dstr) {} |
| return; |
| #else |
| Atom ticker_atom = None; |
| int sleep = sync_tod_delay * 921 * 1000; |
| char propval[200]; |
| int ev, er, maj, min; |
| int db = 0; |
| char *ticker_str = "X11VNC_TICKER"; |
| |
| RAWFB_RET_VOID |
| |
| if (grab_buster > 1) { |
| db = 1; |
| } |
| |
| /* overwrite original dpy, we let orig connection sit unused. */ |
| dpy = XOpenDisplay_wr(dstr); |
| if (!dpy) { |
| fprintf(stderr, "grab_buster_watch: could not reopen: %s\n", |
| dstr); |
| return; |
| } |
| rfbLogEnable(0); |
| |
| /* check for XTEST, etc, and then disable grabs for us */ |
| if (! XTestQueryExtension_wr(dpy, &ev, &er, &maj, &min)) { |
| xtest_present = 0; |
| } else { |
| xtest_present = 1; |
| } |
| if (! XETrapQueryExtension_wr(dpy, &ev, &er, &maj)) { |
| xtrap_present = 0; |
| } else { |
| xtrap_present = 1; |
| } |
| |
| if (! xtest_present && ! xtrap_present) { |
| fprintf(stderr, "grab_buster_watch: no grabserver " |
| "protection on display: %s\n", dstr); |
| return; |
| } |
| disable_grabserver(dpy, 0); |
| |
| usleep(3 * sleep); |
| |
| if (getenv("X11VNC_TICKER")) { |
| ticker_str = getenv("X11VNC_TICKER"); |
| } |
| ticker_atom = XInternAtom(dpy, ticker_str, False); |
| if (! ticker_atom) { |
| fprintf(stderr, "grab_buster_watch: no ticker atom\n"); |
| return; |
| } |
| |
| while(1) { |
| int slp = sleep; |
| if (grab_npids > 1) { |
| slp = slp / 8; |
| } |
| usleep(slp); |
| usleep((int) (0.60 * rfac() * slp)); |
| |
| if (kill((pid_t) parent, 0) != 0) { |
| break; |
| } |
| |
| get_prop(propval, 128, ticker_atom, None); |
| if (db) fprintf(stderr, "got_prop: %s\n", propval); |
| |
| if (!process_watch(propval, parent, db)) { |
| break; |
| } |
| } |
| #endif /* NO_X11 */ |
| } |
| |
| void spawn_grab_buster(void) { |
| #if LIBVNCSERVER_HAVE_FORK |
| pid_t pid; |
| int parent = (int) getpid(); |
| char *dstr = strdup(DisplayString(dpy)); |
| |
| RAWFB_RET_VOID |
| |
| XCloseDisplay_wr(dpy); |
| dpy = NULL; |
| |
| if ((pid = fork()) > 0) { |
| grab_buster_pid = pid; |
| if (! quiet) { |
| rfbLog("grab_buster pid is: %d\n", (int) pid); |
| } |
| } else if (pid == -1) { |
| fprintf(stderr, "spawn_grab_buster: could not fork\n"); |
| rfbLogPerror("fork"); |
| } else { |
| signal(SIGHUP, SIG_DFL); |
| signal(SIGINT, SIG_DFL); |
| signal(SIGQUIT, SIG_DFL); |
| signal(SIGTERM, SIG_DFL); |
| |
| grab_buster_watch(parent, dstr); |
| exit(0); |
| } |
| |
| dpy = XOpenDisplay_wr(dstr); |
| if (!dpy) { |
| rfbLog("failed to reopen display %s in spawn_grab_buster\n", |
| dstr); |
| exit(1); |
| } |
| #endif |
| } |
| |
| void sync_tod_with_servertime(void) { |
| #if NO_X11 |
| RAWFB_RET_VOID |
| return; |
| #else |
| static Atom ticker_atom = None; |
| XEvent xev; |
| char diff[128]; |
| static int seq = 0; |
| static unsigned long xserver_ticks = 1; |
| int i, db = 0; |
| |
| RAWFB_RET_VOID |
| |
| if (atom_NET_ACTIVE_WINDOW == None) { |
| atom_NET_ACTIVE_WINDOW = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", True); |
| } |
| if (atom_NET_CURRENT_DESKTOP == None) { |
| atom_NET_CURRENT_DESKTOP = XInternAtom(dpy, "_NET_CURRENT_DESKTOP", True); |
| } |
| if (atom_NET_CLIENT_LIST_STACKING == None) { |
| atom_NET_CLIENT_LIST_STACKING = XInternAtom(dpy, "_NET_CLIENT_LIST_STACKING", True); |
| } |
| if (atom_XROOTPMAP_ID == None) { |
| atom_XROOTPMAP_ID = XInternAtom(dpy, "_XROOTPMAP_ID", True); |
| } |
| |
| if (! ticker_atom) { |
| char *ticker_str = "X11VNC_TICKER"; |
| if (getenv("X11VNC_TICKER")) { |
| ticker_str = getenv("X11VNC_TICKER"); |
| } |
| ticker_atom = XInternAtom(dpy, ticker_str, False); |
| } |
| if (! ticker_atom) { |
| return; |
| } |
| |
| XSync(dpy, False); |
| while (XCheckTypedEvent(dpy, PropertyNotify, &xev)) { |
| set_prop_atom(xev.xproperty.atom); |
| } |
| |
| snprintf(diff, 128, "%d/%08d/%lu/%.6f", (int) getpid(), seq++, |
| xserver_ticks, servertime_diff); |
| XChangeProperty(dpy, rootwin, ticker_atom, XA_STRING, 8, |
| PropModeReplace, (unsigned char *) diff, strlen(diff)); |
| XSync(dpy, False); |
| |
| for (i=0; i < 10; i++) { |
| int k, got = 0; |
| |
| for (k=0; k < 5; k++) { |
| while (XCheckTypedEvent(dpy, PropertyNotify, &xev)) { |
| if (xev.xproperty.atom == ticker_atom) { |
| double stime; |
| |
| xserver_ticks = xev.xproperty.time; |
| stime = (double) xev.xproperty.time; |
| stime = stime/1000.0; |
| servertime_diff = dnow() - stime; |
| if (db) rfbLog("set servertime_diff: " |
| "%.6f\n", servertime_diff); |
| got = 1; |
| } |
| } |
| } |
| if (got) { |
| break; |
| } |
| usleep(1000); |
| } |
| #endif /* NO_X11 */ |
| } |
| |
| void check_keycode_state(void) { |
| static time_t last_check = 0; |
| int delay = 10, noinput = 3; |
| time_t now = time(NULL); |
| |
| if (! client_count) { |
| return; |
| } |
| if (unixpw_in_progress) return; |
| |
| RAWFB_RET_VOID |
| |
| /* |
| * periodically update our model of the keycode_state[] |
| * by correlating with the Xserver. wait for a pause in |
| * keyboard input to be on the safe side. the idea here |
| * is to remove stale keycode state, not to be perfectly |
| * in sync with the Xserver at every instant of time. |
| */ |
| if (now > last_check + delay && now > last_keyboard_input + noinput) { |
| X_LOCK; |
| init_track_keycode_state(); |
| X_UNLOCK; |
| last_check = now; |
| } |
| } |
| |
| /* |
| * To use the experimental -grablocal option configure like this: |
| * env CPPFLAGS=-DENABLE_GRABLOCAL LDFLAGS=-lXss ./configure |
| */ |
| #ifdef ENABLE_GRABLOCAL |
| #include <X11/extensions/scrnsaver.h> |
| |
| void check_local_grab(void) { |
| static double last_check = 0.0; |
| double now; |
| |
| if (grab_local <= 0) { |
| return; |
| } |
| if (! client_count) { |
| return; |
| } |
| if (unixpw_in_progress) return; |
| |
| if (last_rfb_key_injected <= 0.0 && last_rfb_ptr_injected <= 0.0) { |
| return; |
| } |
| |
| RAWFB_RET_VOID |
| |
| now = dnow(); |
| |
| if (now > last_check + 0.1) { |
| #if !NO_X11 |
| int ret; |
| double idle; |
| XScreenSaverInfo info; |
| static int save_viewonly = -1, local_is_idle = -1, db = -1; |
| |
| if (debug_keyboard) db = debug_keyboard; |
| if (debug_pointer ) db = debug_pointer; |
| |
| if (db < 0) { |
| if (getenv("LOCAL_GRAB_DEBUG")) { |
| db = atoi(getenv("LOCAL_GRAB_DEBUG")); |
| } else { |
| db = 0; |
| } |
| } |
| |
| ret = XScreenSaverQueryInfo(dpy, RootWindowOfScreen( |
| ScreenOfDisplay(dpy, 0)), &info); |
| |
| if (ret) { |
| double tlatest_rfb = 0.0; |
| |
| idle = ((double) info.idle)/1000.0; |
| now = dnow(); |
| |
| if (last_rfb_key_injected > 0.0) { |
| tlatest_rfb = last_rfb_key_injected; |
| } |
| if (last_rfb_ptr_injected > tlatest_rfb) { |
| tlatest_rfb = last_rfb_ptr_injected; |
| } |
| if (db > 1) fprintf(stderr, "idle: %.4f latest: %.4f dt: %.4f\n", idle, now - tlatest_rfb, idle - (now - tlatest_rfb)); |
| |
| if (now - tlatest_rfb <= idle + 0.005) { |
| /* 0.005 is 5ms tolerance */ |
| } else if (idle < grab_local) { |
| if (local_is_idle < 0 || local_is_idle) { |
| save_viewonly = view_only; |
| view_only = 1; |
| if (db) { |
| rfbLog("check_local_grab: set viewonly\n"); |
| } |
| } |
| |
| local_is_idle = 0; |
| } else { |
| if (!local_is_idle && save_viewonly >= 0) { |
| view_only = save_viewonly; |
| if (db) { |
| rfbLog("check_local_grab: restored viewonly; %d\n", view_only); |
| } |
| } |
| local_is_idle = 1; |
| } |
| } |
| #endif |
| last_check = dnow(); |
| } |
| } |
| #endif |
| |
| void check_autorepeat(void) { |
| static time_t last_check = 0; |
| static int idle_timeout = -300, idle_reset = 0; |
| time_t now = time(NULL); |
| int autorepeat_is_on, autorepeat_initially_on; |
| |
| if (! no_autorepeat || ! client_count) { |
| return; |
| } |
| if (now <= last_check + 1) { |
| return; |
| } |
| |
| if (unixpw_in_progress) return; |
| |
| if (idle_timeout < 0) { |
| if (getenv("X11VNC_IDLE_TIMEOUT")) { |
| idle_timeout = atoi(getenv("X11VNC_IDLE_TIMEOUT")); |
| } |
| if (idle_timeout < 0) { |
| idle_timeout = -idle_timeout; |
| } |
| } |
| |
| last_check = now; |
| |
| autorepeat_is_on = get_autorepeat_state(); |
| autorepeat_initially_on = get_initial_autorepeat_state(); |
| |
| if (view_only) { |
| if (! autorepeat_is_on) { |
| autorepeat(1, 1); |
| } |
| return; |
| } |
| |
| if (now > last_keyboard_input + idle_timeout) { |
| /* autorepeat should be on when idle */ |
| if (! autorepeat_is_on && autorepeat_initially_on) { |
| static time_t last_msg = 0; |
| static int cnt = 0; |
| if (now > last_msg + idle_timeout && cnt++ < 10) { |
| rfbLog("idle keyboard: turning X autorepeat" |
| " back on.\n"); |
| last_msg = now; |
| } |
| autorepeat(1, 1); |
| idle_reset = 1; |
| } |
| } else { |
| if (idle_reset) { |
| int i, state[256], didmsg = 0, pressed = 0; |
| int mwt = 600, mmax = 20; |
| static int msgcnt = 0; |
| static double lastmsg = 0.0; |
| |
| for (i=0; i<256; i++) { |
| state[i] = 0; |
| } |
| if (use_threads) {X_LOCK;} |
| get_keystate(state); |
| if (use_threads) {X_UNLOCK;} |
| |
| for (i=0; i<256; i++) { |
| if (state[i] != 0) { |
| /* better wait until all keys are up */ |
| pressed++; |
| if (msgcnt < mmax || dnow() > lastmsg + mwt) { |
| char *str = "unset"; |
| #if !NO_X11 |
| if (use_threads) {X_LOCK;} |
| str = XKeysymToString(XKeycodeToKeysym(dpy, i, 0)); |
| if (use_threads) {X_UNLOCK;} |
| #endif |
| str = str ? str : "nosymbol"; |
| didmsg++; |
| rfbLog("active keyboard: waiting until " |
| "all keys are up. key_down=%d %s. " |
| "If the key is inaccessible via keyboard, " |
| "consider 'x11vnc -R clear_all'\n", i, str); |
| } |
| } |
| } |
| if (didmsg > 0) { |
| msgcnt++; |
| if (msgcnt == mmax) { |
| rfbLog("active keyboard: last such " |
| "message for %d secs.\n", mwt); |
| } |
| lastmsg = dnow(); |
| } |
| if (pressed > 0) { |
| return; |
| } |
| } |
| if (idle_reset) { |
| static time_t last_msg = 0; |
| static int cnt = 0; |
| if (now > last_msg + idle_timeout && cnt++ < 10) { |
| rfbLog("active keyboard: turning X autorepeat" |
| " off.\n"); |
| last_msg = now; |
| } |
| autorepeat(0, 1); |
| idle_reset = 0; |
| |
| } else if (no_repeat_countdown && autorepeat_is_on) { |
| int n = no_repeat_countdown - 1; |
| if (n >= 0) { |
| rfbLog("Battling with something for " |
| "-norepeat!! (%d resets left)\n", n); |
| } else { |
| rfbLog("Battling with something for " |
| "-norepeat!!\n"); |
| } |
| if (no_repeat_countdown > 0) { |
| no_repeat_countdown--; |
| } |
| autorepeat(1, 0); |
| autorepeat(0, 0); |
| } |
| } |
| } |
| |
| void set_prop_atom(Atom atom) { |
| if (atom == None) return; |
| if (atom == atom_NET_ACTIVE_WINDOW) got_NET_ACTIVE_WINDOW = dnow(); |
| if (atom == atom_NET_CURRENT_DESKTOP) got_NET_CURRENT_DESKTOP = dnow(); |
| if (atom == atom_NET_CLIENT_LIST_STACKING) got_NET_CLIENT_LIST_STACKING = dnow(); |
| if (atom == atom_XROOTPMAP_ID) got_XROOTPMAP_ID = dnow(); |
| } |
| |
| /* |
| * This routine is periodically called to check for selection related |
| * and other X11 events and respond to them as needed. |
| */ |
| void check_xevents(int reset) { |
| #if NO_X11 |
| RAWFB_RET_VOID |
| if (!reset) {} |
| return; |
| #else |
| XEvent xev; |
| int tmp, have_clients = 0; |
| static int sent_some_sel = 0; |
| static time_t last_call = 0; |
| static time_t last_bell = 0; |
| static time_t last_init_check = 0; |
| static time_t last_sync = 0; |
| static time_t last_time_sync = 0; |
| time_t now = time(NULL); |
| static double last_request = 0.0; |
| static double last_xrefresh = 0.0; |
| XErrorHandler old_handler; |
| |
| if (unixpw_in_progress) return; |
| |
| RAWFB_RET_VOID |
| |
| if (now > last_init_check+1 || reset) { |
| last_init_check = now; |
| initialize_xevents(reset); |
| if (reset) { |
| return; |
| } |
| } |
| |
| if (screen && screen->clientHead) { |
| have_clients = 1; |
| } |
| |
| X_LOCK; |
| /* |
| * There is a bug where we have to wait before sending text to |
| * the client... so instead of sending right away we wait a |
| * the few seconds. |
| */ |
| |
| if (have_clients && watch_selection && !sent_some_sel |
| && now > last_client + sel_waittime) { |
| if (XGetSelectionOwner(dpy, XA_PRIMARY) == None) { |
| cutbuffer_send(); |
| } |
| sent_some_sel = 1; |
| } |
| if (! have_clients) { |
| /* |
| * If we don't have clients we can miss the X server |
| * going away until a client connects. |
| */ |
| static time_t last_X_ping = 0; |
| if (now > last_X_ping + 5) { |
| last_X_ping = now; |
| XGetSelectionOwner(dpy, XA_PRIMARY); |
| } |
| } |
| |
| if (have_clients && xrefresh > 0.0 && dnow() > last_xrefresh + xrefresh) { |
| XSetWindowAttributes swa; |
| Visual visual; |
| Window xrf; |
| unsigned long mask; |
| |
| swa.override_redirect = True; |
| swa.backing_store = NotUseful; |
| swa.save_under = False; |
| swa.background_pixmap = None; |
| visual.visualid = CopyFromParent; |
| mask = (CWOverrideRedirect|CWBackingStore|CWSaveUnder|CWBackPixmap); |
| |
| xrf = XCreateWindow(dpy, window, coff_x, coff_y, dpy_x, dpy_y, 0, CopyFromParent, |
| InputOutput, &visual, mask, &swa); |
| if (xrf != None) { |
| if (0) fprintf(stderr, "XCreateWindow(%d, %d, %d, %d) 0x%lx\n", coff_x, coff_y, dpy_x, dpy_y, xrf); |
| XMapWindow(dpy, xrf); |
| XFlush_wr(dpy); |
| XDestroyWindow(dpy, xrf); |
| XFlush_wr(dpy); |
| } |
| last_xrefresh = dnow(); |
| } |
| |
| if (now > last_call+1) { |
| /* we only check these once a second or so. */ |
| int n = 0; |
| |
| trapped_xerror = 0; |
| old_handler = XSetErrorHandler(trap_xerror); |
| |
| while (XCheckTypedEvent(dpy, MappingNotify, &xev)) { |
| XRefreshKeyboardMapping((XMappingEvent *) &xev); |
| n++; |
| } |
| if (n && use_modifier_tweak) { |
| X_UNLOCK; |
| initialize_modtweak(); |
| X_LOCK; |
| } |
| if (xtrap_base_event_type) { |
| int base = xtrap_base_event_type; |
| while (XCheckTypedEvent(dpy, base, &xev)) { |
| ; |
| } |
| } |
| if (xtest_base_event_type) { |
| int base = xtest_base_event_type; |
| while (XCheckTypedEvent(dpy, base, &xev)) { |
| ; |
| } |
| } |
| /* |
| * we can get ClientMessage from our XSendEvent() call in |
| * selection_request(). |
| */ |
| while (XCheckTypedEvent(dpy, ClientMessage, &xev)) { |
| ; |
| } |
| |
| XSetErrorHandler(old_handler); |
| trapped_xerror = 0; |
| last_call = now; |
| } |
| |
| if (freeze_when_obscured) { |
| if (XCheckTypedEvent(dpy, VisibilityNotify, &xev)) { |
| if (xev.type == VisibilityNotify && xev.xany.window == subwin) { |
| int prev = subwin_obscured; |
| if (xev.xvisibility.state == VisibilityUnobscured) { |
| subwin_obscured = 0; |
| } else if (xev.xvisibility.state == VisibilityPartiallyObscured) { |
| subwin_obscured = 1; |
| } else { |
| subwin_obscured = 2; |
| } |
| rfbLog("subwin_obscured: %d -> %d\n", prev, subwin_obscured); |
| } |
| } |
| } |
| |
| /* check for CUT_BUFFER0, VNC_CONNECT, X11VNC_REMOTE changes: */ |
| if (XCheckTypedEvent(dpy, PropertyNotify, &xev)) { |
| int got_cutbuffer = 0; |
| int got_vnc_connect = 0; |
| int got_x11vnc_remote = 0; |
| static int prop_dbg = -1; |
| |
| /* to avoid piling up between calls, read all PropertyNotify now */ |
| do { |
| if (xev.type == PropertyNotify) { |
| if (xev.xproperty.atom == XA_CUT_BUFFER0) { |
| got_cutbuffer++; |
| } else if (vnc_connect && vnc_connect_prop != None |
| && xev.xproperty.atom == vnc_connect_prop) { |
| got_vnc_connect++; |
| } else if (vnc_connect && x11vnc_remote_prop != None |
| && xev.xproperty.atom == x11vnc_remote_prop) { |
| got_x11vnc_remote++; |
| } |
| set_prop_atom(xev.xproperty.atom); |
| } |
| } while (XCheckTypedEvent(dpy, PropertyNotify, &xev)); |
| |
| if (prop_dbg < 0) { |
| prop_dbg = 0; |
| if (getenv("PROP_DBG")) { |
| prop_dbg = 1; |
| } |
| } |
| |
| if (prop_dbg && (got_cutbuffer > 1 || got_vnc_connect > 1 || got_x11vnc_remote > 1)) { |
| static double lastmsg = 0.0; |
| static int count = 0; |
| double now = dnow(); |
| |
| if (1 && now > lastmsg + 300.0) { |
| if (got_cutbuffer > 1) { |
| rfbLog("check_xevents: warning: %d cutbuffer events since last check.\n", got_cutbuffer); |
| } |
| if (got_vnc_connect > 1) { |
| rfbLog("check_xevents: warning: %d vnc_connect events since last check.\n", got_vnc_connect); |
| } |
| if (got_x11vnc_remote > 1) { |
| rfbLog("check_xevents: warning: %d x11vnc_remote events since last check.\n", got_x11vnc_remote); |
| } |
| count++; |
| if (count >= 3) { |
| lastmsg = now; |
| count = 0; |
| } |
| } |
| } |
| |
| if (got_cutbuffer) { |
| /* |
| * Go retrieve CUT_BUFFER0 and send it. |
| * |
| * set_cutbuffer is a flag to try to avoid |
| * processing our own cutbuffer changes. |
| */ |
| if (have_clients && watch_selection && !set_cutbuffer) { |
| cutbuffer_send(); |
| sent_some_sel = 1; |
| } |
| set_cutbuffer = 0; |
| } |
| if (got_vnc_connect) { |
| /* |
| * Go retrieve VNC_CONNECT string. |
| */ |
| read_vnc_connect_prop(0); |
| } |
| if (got_x11vnc_remote) { |
| /* |
| * Go retrieve X11VNC_REMOTE string. |
| */ |
| read_x11vnc_remote_prop(0); |
| } |
| } |
| |
| /* do this now that we have just cleared PropertyNotify */ |
| tmp = 0; |
| if (rfac() < 0.6) { |
| tmp = 1; |
| } |
| if (now > last_time_sync + sync_tod_delay + tmp) { |
| sync_tod_with_servertime(); |
| last_time_sync = now; |
| } |
| |
| #if LIBVNCSERVER_HAVE_LIBXRANDR |
| if (xrandr || xrandr_maybe) { |
| check_xrandr_event("check_xevents"); |
| } |
| #endif |
| #if LIBVNCSERVER_HAVE_LIBXFIXES |
| if (xfixes_present && use_xfixes && xfixes_first_initialized && xfixes_base_event_type) { |
| if (XCheckTypedEvent(dpy, xfixes_base_event_type + |
| XFixesCursorNotify, &xev)) { |
| got_xfixes_cursor_notify++; |
| } |
| } |
| #endif |
| |
| /* check for our PRIMARY request notification: */ |
| if (watch_primary || watch_clipboard) { |
| int doprimary = 1, doclipboard = 2, which, own = 0; |
| double delay = 1.0; |
| Atom atom; |
| char *req; |
| |
| if (XCheckTypedEvent(dpy, SelectionNotify, &xev)) { |
| if (xev.type == SelectionNotify && |
| xev.xselection.requestor == selwin && |
| xev.xselection.property != None && |
| xev.xselection.target == XA_STRING) { |
| Atom s = xev.xselection.selection; |
| if (s == XA_PRIMARY || s == clipboard_atom) { |
| /* go retrieve it and check it */ |
| if (now > last_client + sel_waittime |
| || sent_some_sel) { |
| selection_send(&xev); |
| } |
| } |
| } |
| } |
| /* |
| * Every second or so, request PRIMARY or CLIPBOARD, |
| * unless we already own it or there is no owner or we |
| * have no clients. |
| * TODO: even at this low rate we should look into |
| * and performance problems in odds cases (large text, |
| * modem, etc.) |
| */ |
| which = 0; |
| if (watch_primary && watch_clipboard && ! own_clipboard && |
| ! own_primary) { |
| delay = 0.6; |
| } |
| if (dnow() > last_request + delay) { |
| /* |
| * It is not a good idea to do both at the same |
| * time so we must choose one: |
| */ |
| if (watch_primary && watch_clipboard) { |
| static int count = 0; |
| if (own_clipboard) { |
| which = doprimary; |
| } else if (own_primary) { |
| which = doclipboard; |
| } else if (count++ % 3 == 0) { |
| which = doclipboard; |
| } else { |
| which = doprimary; |
| } |
| } else if (watch_primary) { |
| which = doprimary; |
| } else if (watch_clipboard) { |
| which = doclipboard; |
| } |
| last_request = dnow(); |
| } |
| atom = None; |
| req = "none"; |
| if (which == doprimary) { |
| own = own_primary; |
| atom = XA_PRIMARY; |
| req = "PRIMARY"; |
| } else if (which == doclipboard) { |
| own = own_clipboard; |
| atom = clipboard_atom; |
| req = "CLIPBOARD"; |
| } |
| if (which != 0 && ! own && have_clients && |
| XGetSelectionOwner(dpy, atom) != None && selwin != None) { |
| XConvertSelection(dpy, atom, XA_STRING, XA_STRING, |
| selwin, CurrentTime); |
| if (debug_sel) { |
| rfbLog("request %s\n", req); |
| } |
| } |
| } |
| |
| if (own_primary || own_clipboard) { |
| /* we own PRIMARY or CLIPBOARD, see if someone requested it: */ |
| trapped_xerror = 0; |
| old_handler = XSetErrorHandler(trap_xerror); |
| |
| if (XCheckTypedEvent(dpy, SelectionRequest, &xev)) { |
| if (own_primary && xev.type == SelectionRequest && |
| xev.xselectionrequest.selection == XA_PRIMARY) { |
| selection_request(&xev, "PRIMARY"); |
| } |
| if (own_clipboard && xev.type == SelectionRequest && |
| xev.xselectionrequest.selection == clipboard_atom) { |
| selection_request(&xev, "CLIPBOARD"); |
| } |
| } |
| |
| /* we own PRIMARY or CLIPBOARD, see if we no longer own it: */ |
| if (XCheckTypedEvent(dpy, SelectionClear, &xev)) { |
| if (own_primary && xev.type == SelectionClear && |
| xev.xselectionclear.selection == XA_PRIMARY) { |
| own_primary = 0; |
| if (xcut_str_primary) { |
| free(xcut_str_primary); |
| xcut_str_primary = NULL; |
| } |
| if (debug_sel) { |
| rfbLog("Released PRIMARY.\n"); |
| } |
| } |
| if (own_clipboard && xev.type == SelectionClear && |
| xev.xselectionclear.selection == clipboard_atom) { |
| own_clipboard = 0; |
| if (xcut_str_clipboard) { |
| free(xcut_str_clipboard); |
| xcut_str_clipboard = NULL; |
| } |
| if (debug_sel) { |
| rfbLog("Released CLIPBOARD.\n"); |
| } |
| } |
| } |
| |
| XSetErrorHandler(old_handler); |
| trapped_xerror = 0; |
| } |
| |
| if (watch_bell || now > last_bell+1) { |
| last_bell = now; |
| check_bell_event(); |
| } |
| if (tray_request != None) { |
| static time_t last_tray_request = 0; |
| if (now > last_tray_request + 2) { |
| last_tray_request = now; |
| if (tray_embed(tray_request, tray_unembed)) { |
| tray_window = tray_request; |
| tray_request = None; |
| } |
| } |
| } |
| |
| #ifndef DEBUG_XEVENTS |
| #define DEBUG_XEVENTS 1 |
| #endif |
| #if DEBUG_XEVENTS |
| if (debug_xevents) { |
| static time_t last_check = 0; |
| static time_t reminder = 0; |
| static int freq = 0; |
| |
| if (! freq) { |
| if (getenv("X11VNC_REMINDER_RATE")) { |
| freq = atoi(getenv("X11VNC_REMINDER_RATE")); |
| } else { |
| freq = 300; |
| } |
| } |
| |
| if (now > last_check + 1) { |
| int ev_type_max = 300, ev_size = 400; |
| XEvent xevs[400]; |
| int i, tot = XEventsQueued(dpy, QueuedAlready); |
| |
| if (reminder == 0 || (tot && now > reminder + freq)) { |
| print_xevent_bases(); |
| reminder = now; |
| } |
| last_check = now; |
| |
| if (tot) { |
| fprintf(stderr, "Total events queued: %d\n", |
| tot); |
| } |
| for (i=1; i<ev_type_max; i++) { |
| int k, n = 0; |
| while (XCheckTypedEvent(dpy, i, xevs+n)) { |
| if (++n >= ev_size) { |
| break; |
| } |
| } |
| if (n) { |
| fprintf(stderr, " %d%s events of type" |
| " %d queued\n", n, |
| (n >= ev_size) ? "+" : "", i); |
| } |
| for (k=n-1; k >= 0; k--) { |
| XPutBackEvent(dpy, xevs+k); |
| } |
| } |
| } |
| } |
| #endif |
| |
| if (now > last_sync + 1200) { |
| /* kludge for any remaining event leaks */ |
| int bugout = use_xdamage ? 500 : 50; |
| int qlen, i; |
| if (last_sync != 0) { |
| qlen = XEventsQueued(dpy, QueuedAlready); |
| if (qlen >= bugout) { |
| rfbLog("event leak: %d queued, " |
| " calling XSync(dpy, True)\n", qlen); |
| rfbLog(" for diagnostics run: 'x11vnc -R" |
| " debug_xevents:1'\n"); |
| XSync(dpy, True); |
| } |
| } |
| last_sync = now; |
| |
| /* clear these, we don't want any events on them */ |
| if (rdpy_ctrl) { |
| qlen = XEventsQueued(rdpy_ctrl, QueuedAlready); |
| for (i=0; i<qlen; i++) { |
| XNextEvent(rdpy_ctrl, &xev); |
| } |
| } |
| if (gdpy_ctrl) { |
| qlen = XEventsQueued(gdpy_ctrl, QueuedAlready); |
| for (i=0; i<qlen; i++) { |
| XNextEvent(gdpy_ctrl, &xev); |
| } |
| } |
| } |
| X_UNLOCK; |
| |
| #endif /* NO_X11 */ |
| } |
| |
| extern int rawfb_vnc_reflect; |
| /* |
| * hook called when a VNC client sends us some "XCut" text (rfbClientCutText). |
| */ |
| void xcut_receive(char *text, int len, rfbClientPtr cl) { |
| allowed_input_t input; |
| |
| if (threads_drop_input) { |
| return; |
| } |
| |
| if (unixpw_in_progress) { |
| rfbLog("xcut_receive: unixpw_in_progress, skipping.\n"); |
| return; |
| } |
| |
| if (!watch_selection) { |
| return; |
| } |
| if (view_only) { |
| return; |
| } |
| if (text == NULL || len == 0) { |
| return; |
| } |
| get_allowed_input(cl, &input); |
| if (!input.clipboard) { |
| return; |
| } |
| INPUT_LOCK; |
| |
| if (remote_prefix != NULL && strstr(text, remote_prefix) == text) { |
| char *result, *rcmd = text + strlen(remote_prefix); |
| char *tmp = (char *) calloc(len + 8, 1); |
| |
| if (strstr(rcmd, "cmd=") != rcmd && strstr(rcmd, "qry=") != rcmd) { |
| strcat(tmp, "qry="); |
| } |
| strncat(tmp, rcmd, len - strlen(remote_prefix)); |
| rfbLog("remote_prefix command: '%s'\n", tmp); |
| |
| if (use_threads) { |
| if (client_connect_file) { |
| FILE *f = fopen(client_connect_file, "w"); |
| if (f) { |
| fprintf(f, "%s\n", tmp); |
| fclose(f); |
| free(tmp); |
| INPUT_UNLOCK; |
| return; |
| } |
| } |
| if (vnc_connect) { |
| sprintf(x11vnc_remote_str, "%s", tmp); |
| free(tmp); |
| INPUT_UNLOCK; |
| return; |
| } |
| } |
| INPUT_UNLOCK; |
| |
| |
| result = process_remote_cmd(tmp, 1); |
| if (result == NULL ) { |
| result = strdup("null"); |
| } else if (!strcmp(result, "")) { |
| free(result); |
| result = strdup("none"); |
| } |
| rfbLog("remote_prefix result: '%s'\n", result); |
| |
| free(tmp); |
| tmp = (char *) calloc(strlen(remote_prefix) + strlen(result) + 1, 1); |
| |
| strcat(tmp, remote_prefix); |
| strcat(tmp, result); |
| free(result); |
| |
| rfbSendServerCutText(screen, tmp, strlen(tmp)); |
| free(tmp); |
| |
| return; |
| } |
| |
| if (! check_sel_direction("recv", "xcut_receive", text, len)) { |
| INPUT_UNLOCK; |
| return; |
| } |
| |
| #ifdef MACOSX |
| if (macosx_console) { |
| macosx_set_sel(text, len); |
| INPUT_UNLOCK; |
| return; |
| } |
| #endif |
| |
| if (rawfb_vnc_reflect) { |
| vnc_reflect_send_cuttext(text, len); |
| INPUT_UNLOCK; |
| return; |
| } |
| |
| RAWFB_RET_VOID |
| |
| #if NO_X11 |
| INPUT_UNLOCK; |
| return; |
| #else |
| |
| X_LOCK; |
| |
| /* associate this text with PRIMARY (and SECONDARY...) */ |
| if (set_primary && ! own_primary && selwin != None) { |
| own_primary = 1; |
| /* we need to grab the PRIMARY selection */ |
| XSetSelectionOwner(dpy, XA_PRIMARY, selwin, CurrentTime); |
| XFlush_wr(dpy); |
| if (debug_sel) { |
| rfbLog("Own PRIMARY.\n"); |
| } |
| } |
| |
| if (set_clipboard && ! own_clipboard && clipboard_atom != None && selwin != None) { |
| own_clipboard = 1; |
| /* we need to grab the CLIPBOARD selection */ |
| XSetSelectionOwner(dpy, clipboard_atom, selwin, CurrentTime); |
| XFlush_wr(dpy); |
| if (debug_sel) { |
| rfbLog("Own CLIPBOARD.\n"); |
| } |
| } |
| |
| /* duplicate the text string for our own use. */ |
| if (set_primary) { |
| if (xcut_str_primary != NULL) { |
| free(xcut_str_primary); |
| xcut_str_primary = NULL; |
| } |
| xcut_str_primary = (char *) malloc((size_t) (len+1)); |
| strncpy(xcut_str_primary, text, len); |
| xcut_str_primary[len] = '\0'; /* make sure null terminated */ |
| if (debug_sel) { |
| rfbLog("Set PRIMARY '%s'\n", xcut_str_primary); |
| } |
| } |
| if (set_clipboard) { |
| if (xcut_str_clipboard != NULL) { |
| free(xcut_str_clipboard); |
| xcut_str_clipboard = NULL; |
| } |
| xcut_str_clipboard = (char *) malloc((size_t) (len+1)); |
| strncpy(xcut_str_clipboard, text, len); |
| xcut_str_clipboard[len] = '\0'; /* make sure null terminated */ |
| if (debug_sel) { |
| rfbLog("Set CLIPBOARD '%s'\n", xcut_str_clipboard); |
| } |
| } |
| |
| /* copy this text to CUT_BUFFER0 as well: */ |
| XChangeProperty(dpy, rootwin, XA_CUT_BUFFER0, XA_STRING, 8, |
| PropModeReplace, (unsigned char *) text, len); |
| XFlush_wr(dpy); |
| |
| X_UNLOCK; |
| INPUT_UNLOCK; |
| |
| set_cutbuffer = 1; |
| #endif /* NO_X11 */ |
| } |
| |
| void kbd_release_all_keys(rfbClientPtr cl) { |
| if (unixpw_in_progress) { |
| rfbLog("kbd_release_all_keys: unixpw_in_progress, skipping.\n"); |
| return; |
| } |
| if (cl->viewOnly) { |
| return; |
| } |
| |
| RAWFB_RET_VOID |
| |
| #if NO_X11 |
| return; |
| #else |
| if (use_threads) { |
| X_LOCK; |
| } |
| |
| clear_keys(); |
| clear_modifiers(0); |
| |
| if (use_threads) { |
| X_UNLOCK; |
| } |
| #endif |
| } |
| |
| void set_single_window(rfbClientPtr cl, int x, int y) { |
| int ok = 0; |
| if (no_ultra_ext) { |
| return; |
| } |
| if (unixpw_in_progress) { |
| rfbLog("set_single_window: unixpw_in_progress, dropping client.\n"); |
| rfbCloseClient(cl); |
| return; |
| } |
| if (cl->viewOnly) { |
| return; |
| } |
| |
| RAWFB_RET_VOID |
| |
| #if NO_X11 |
| return; |
| #else |
| if (x==1 && y==1) { |
| if (subwin) { |
| subwin = 0x0; |
| ok = 1; |
| } |
| } else { |
| Window r, c; |
| int rootx, rooty, wx, wy; |
| unsigned int mask; |
| |
| update_x11_pointer_position(x, y); |
| XSync(dpy, False); |
| |
| if (XQueryPointer_wr(dpy, rootwin, &r, &c, &rootx, &rooty, |
| &wx, &wy, &mask)) { |
| if (c != None) { |
| subwin = c; |
| ok = 1; |
| } |
| } |
| } |
| |
| if (ok) { |
| check_black_fb(); |
| do_new_fb(1); |
| } |
| #endif |
| |
| } |
| void set_server_input(rfbClientPtr cl, int grab) { |
| if (no_ultra_ext) { |
| return; |
| } |
| if (unixpw_in_progress) { |
| rfbLog("set_server_input: unixpw_in_progress, dropping client.\n"); |
| rfbCloseClient(cl); |
| return; |
| } |
| if (cl->viewOnly) { |
| return; |
| } |
| |
| RAWFB_RET_VOID |
| |
| #if NO_X11 |
| return; |
| #else |
| if (grab) { |
| if (!no_ultra_dpms) { |
| set_dpms_mode("enable"); |
| set_dpms_mode("off"); |
| force_dpms = 1; |
| } |
| |
| process_remote_cmd("cmd=grabkbd", 0); |
| process_remote_cmd("cmd=grabptr", 0); |
| |
| } else { |
| process_remote_cmd("cmd=nograbkbd", 0); |
| process_remote_cmd("cmd=nograbptr", 0); |
| |
| if (!no_ultra_dpms) { |
| force_dpms = 0; |
| } |
| } |
| #endif |
| } |
| |
| static int wsock_timeout_sock = -1; |
| |
| static void wsock_timeout (int sig) { |
| rfbLog("sig: %d, wsock_timeout.\n", sig); |
| if (wsock_timeout_sock >= 0) { |
| close(wsock_timeout_sock); |
| wsock_timeout_sock = -1; |
| } |
| } |
| |
| static void try_local_chat_window(void) { |
| int i, port, lsock; |
| char cmd[100]; |
| struct sockaddr_in addr; |
| pid_t pid = -1; |
| #ifdef __hpux |
| int addrlen = sizeof(addr); |
| #else |
| socklen_t addrlen = sizeof(addr); |
| #endif |
| |
| for (i = 0; i < 90; i++) { |
| /* find an open port */ |
| port = 7300 + i; |
| /* XXX ::1 fallback */ |
| lsock = listen_tcp(port, htonl(INADDR_LOOPBACK), 0); |
| if (lsock >= 0) { |
| break; |
| } |
| port = 0; |
| } |
| |
| if (port == 0) { |
| return; |
| } |
| |
| /* have ssvncvncviewer connect back to us (n.b. sockpair fails) */ |
| |
| sprintf(cmd, "ssvnc -cmd VNC://localhost:%d -chatonly", port); |
| |
| #if LIBVNCSERVER_HAVE_FORK |
| pid = fork(); |
| #endif |
| |
| if (pid == -1) { |
| perror("fork"); |
| return; |
| } else if (pid == 0) { |
| char *args[4]; |
| int d; |
| args[0] = "/bin/sh"; |
| args[1] = "-c"; |
| /* "ssvnc -cmd VNC://fd=0 -chatonly"; not working */ |
| args[2] = cmd; |
| args[3] = NULL; |
| |
| set_env("VNCVIEWER_PASSWORD", "moo"); |
| #if !NO_X11 |
| if (dpy != NULL) { |
| set_env("DISPLAY", DisplayString(dpy)); |
| } |
| #endif |
| for (d = 3; d < 256; d++) { |
| close(d); |
| } |
| |
| execvp(args[0], args); |
| perror("exec"); |
| exit(1); |
| } else { |
| int i, sock = -1; |
| rfbNewClientHookPtr new_save; |
| |
| signal(SIGALRM, wsock_timeout); |
| wsock_timeout_sock = lsock; |
| |
| alarm(10); |
| sock = accept(lsock, (struct sockaddr *)&addr, &addrlen); |
| alarm(0); |
| |
| signal(SIGALRM, SIG_DFL); |
| close(lsock); |
| |
| if (sock < 0) { |
| return; |
| } |
| |
| /* mutex */ |
| new_save = screen->newClientHook; |
| screen->newClientHook = new_client_chat_helper; |
| |
| chat_window_client = create_new_client(sock, 1); |
| |
| screen->newClientHook = new_save; |
| |
| if (chat_window_client != NULL) { |
| rfbPasswordCheckProcPtr pwchk_save = screen->passwordCheck; |
| rfbBool save_shared1 = screen->alwaysShared; |
| rfbBool save_shared2 = screen->neverShared; |
| |
| screen->alwaysShared = TRUE; |
| screen->neverShared = FALSE; |
| |
| screen->passwordCheck = password_check_chat_helper; |
| for (i=0; i<30; i++) { |
| rfbPE(-1); |
| if (!chat_window_client) { |
| break; |
| } |
| if (chat_window_client->state == RFB_NORMAL) { |
| break; |
| } |
| } |
| |
| screen->passwordCheck = pwchk_save; |
| screen->alwaysShared = save_shared1; |
| screen->neverShared = save_shared2; |
| } |
| } |
| } |
| |
| void set_text_chat(rfbClientPtr cl, int len, char *txt) { |
| int dochat = 1; |
| rfbClientIteratorPtr iter; |
| rfbClientPtr cl2; |
| unsigned int ulen = (unsigned int) len; |
| |
| if (no_ultra_ext || ! dochat) { |
| return; |
| } |
| |
| if (unixpw_in_progress) { |
| rfbLog("set_text_chat: unixpw_in_progress, dropping client.\n"); |
| rfbCloseClient(cl); |
| return; |
| } |
| #if LIBVNCSERVER_HAS_TEXTCHAT |
| |
| if (chat_window && chat_window_client == NULL && ulen == rfbTextChatOpen) { |
| try_local_chat_window(); |
| } |
| |
| saw_ultra_chat = 1; |
| |
| iter = rfbGetClientIterator(screen); |
| while( (cl2 = rfbClientIteratorNext(iter)) ) { |
| unsigned int ulen = (unsigned int) len; |
| if (cl2 == cl) { |
| continue; |
| } |
| if (cl2->state != RFB_NORMAL) { |
| continue; |
| } |
| |
| SEND_LOCK(cl2); |
| |
| if (ulen == rfbTextChatOpen) { |
| rfbSendTextChatMessage(cl2, rfbTextChatOpen, ""); |
| } else if (ulen == rfbTextChatClose) { |
| rfbSendTextChatMessage(cl2, rfbTextChatClose, ""); |
| /* not clear what is going on WRT close and finished... */ |
| rfbSendTextChatMessage(cl2, rfbTextChatFinished, ""); |
| } else if (ulen == rfbTextChatFinished) { |
| rfbSendTextChatMessage(cl2, rfbTextChatFinished, ""); |
| } else if (len <= rfbTextMaxSize) { |
| rfbSendTextChatMessage(cl2, len, txt); |
| } |
| |
| SEND_UNLOCK(cl2); |
| } |
| rfbReleaseClientIterator(iter); |
| |
| if (ulen == rfbTextChatClose && cl != NULL) { |
| /* not clear what is going on WRT close and finished... */ |
| SEND_LOCK(cl); |
| rfbSendTextChatMessage(cl, rfbTextChatFinished, ""); |
| SEND_UNLOCK(cl); |
| } |
| #endif |
| } |
| |
| int get_keyboard_led_state_hook(rfbScreenInfoPtr s) { |
| if (s) {} |
| if (unixpw_in_progress) { |
| rfbLog("get_keyboard_led_state_hook: unixpw_in_progress, skipping.\n"); |
| return 0; |
| } |
| return 0; |
| } |
| int get_file_transfer_permitted(rfbClientPtr cl) { |
| allowed_input_t input; |
| if (unixpw_in_progress) { |
| rfbLog("get_file_transfer_permitted: unixpw_in_progress, dropping client.\n"); |
| rfbCloseClient(cl); |
| return FALSE; |
| } |
| if (0) fprintf(stderr, "get_file_transfer_permitted called\n"); |
| if (view_only) { |
| return FALSE; |
| } |
| if (cl->viewOnly) { |
| return FALSE; |
| } |
| get_allowed_input(cl, &input); |
| if (!input.files) { |
| return FALSE; |
| } |
| if (screen->permitFileTransfer) { |
| saw_ultra_file = 1; |
| } |
| return screen->permitFileTransfer; |
| } |
| |
| |