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-rw-r--r--x11vnc/cleanup.c769
1 files changed, 0 insertions, 769 deletions
diff --git a/x11vnc/cleanup.c b/x11vnc/cleanup.c
deleted file mode 100644
index 60db819..0000000
--- a/x11vnc/cleanup.c
+++ /dev/null
@@ -1,769 +0,0 @@
-/*
- 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.
-*/
-
-/* -- cleanup.c -- */
-
-#include "x11vnc.h"
-#include "xwrappers.h"
-#include "xdamage.h"
-#include "remote.h"
-#include "keyboard.h"
-#include "scan.h"
-#include "gui.h"
-#include "solid.h"
-#include "unixpw.h"
-#include "sslcmds.h"
-#include "sslhelper.h"
-#include "connections.h"
-#include "macosx.h"
-#include "macosxCG.h"
-#include "avahi.h"
-#include "screen.h"
-#include "xrecord.h"
-#include "xevents.h"
-#include "uinput.h"
-
-/*
- * Exiting and error handling routines
- */
-
-int trapped_xerror = 0;
-int trapped_xioerror = 0;
-int trapped_getimage_xerror = 0;
-int trapped_record_xerror = 0;
-XErrorEvent *trapped_xerror_event;
-
-/* XXX CHECK BEFORE RELEASE */
-int crash_debug = 0;
-
-void clean_shm(int quick);
-void clean_up_exit(int ret);
-int trap_xerror(Display *d, XErrorEvent *error);
-int trap_xioerror(Display *d);
-int trap_getimage_xerror(Display *d, XErrorEvent *error);
-char *xerror_string(XErrorEvent *error);
-void initialize_crash_handler(void);
-void initialize_signals(void);
-void unset_signals(void);
-void close_exec_fds(void);
-int known_sigpipe_mode(char *s);
-
-
-static int exit_flag = 0;
-static int exit_sig = 0;
-
-static void clean_icon_mode(void);
-static int Xerror(Display *d, XErrorEvent *error);
-static int XIOerr(Display *d);
-static void crash_shell_help(void);
-static void crash_shell(void);
-static void interrupted (int sig);
-
-
-void clean_shm(int quick) {
- int i, cnt = 0;
-
- /*
- * to avoid deadlock, etc, under quick=1 we just delete the shm
- * areas and leave the X stuff hanging.
- */
- if (quick) {
- shm_delete(&scanline_shm);
- shm_delete(&fullscreen_shm);
- shm_delete(&snaprect_shm);
- } else {
- shm_clean(&scanline_shm, scanline);
- shm_clean(&fullscreen_shm, fullscreen);
- shm_clean(&snaprect_shm, snaprect);
- }
-
- /*
- * Here we have to clean up quite a few shm areas for all
- * the possible tile row runs (40 for 1280), not as robust
- * as one might like... sometimes need to run ipcrm(1).
- */
- for(i=1; i<=ntiles_x; i++) {
- if (i > tile_shm_count) {
- break;
- }
- if (quick) {
- shm_delete(&tile_row_shm[i]);
- } else {
- shm_clean(&tile_row_shm[i], tile_row[i]);
- }
- cnt++;
- if (single_copytile_count && i >= single_copytile_count) {
- break;
- }
- }
- if (!quiet && cnt > 0) {
- rfbLog("deleted %d tile_row polling images.\n", cnt);
- }
-}
-
-static void clean_icon_mode(void) {
- if (icon_mode && icon_mode_fh) {
- fprintf(icon_mode_fh, "quit\n");
- fflush(icon_mode_fh);
- fclose(icon_mode_fh);
- icon_mode_fh = NULL;
- if (icon_mode_file) {
- unlink(icon_mode_file);
- icon_mode_file = NULL;
- }
- }
-}
-
-/*
- * Normal exiting
- */
-void clean_up_exit(int ret) {
- static int depth = 0;
- exit_flag = 1;
-
- if (depth++ > 2) {
- exit(ret);
- }
-
- if (icon_mode) {
- clean_icon_mode();
- }
-
- /* remove the shm areas: */
- clean_shm(0);
-
- stop_stunnel();
- if (use_openssl) {
- ssl_helper_pid(0, 0); /* killall */
- }
-
- if (ssh_pid > 0) {
- kill(ssh_pid, SIGTERM);
- ssh_pid = 0;
- }
-
-#ifdef MACOSX
- if (client_connect_file) {
- if (strstr(client_connect_file, "/tmp/x11vnc-macosx-remote")
- == client_connect_file) {
- unlink(client_connect_file);
- }
- }
- if (macosx_console) {
- macosxCG_fini();
- }
-#endif
-
- if (pipeinput_fh != NULL) {
- pclose(pipeinput_fh);
- pipeinput_fh = NULL;
- }
-
- shutdown_uinput();
-
- if (unix_sock) {
- if (unix_sock_fd >= 0) {
- rfbLog("deleting unix sock: %s\n", unix_sock);
- close(unix_sock_fd);
- unix_sock_fd = -1;
- unlink(unix_sock);
- }
- }
-
- if (! dpy) { /* raw_rb hack */
- if (rm_flagfile) {
- unlink(rm_flagfile);
- rm_flagfile = NULL;
- }
- exit(ret);
- }
-
- /* X keyboard cleanups */
- delete_added_keycodes(0);
-
- if (clear_mods == 1) {
- clear_modifiers(0);
- } else if (clear_mods == 2) {
- clear_keys();
- } else if (clear_mods == 3) {
- clear_keys();
- clear_locks();
- }
-
- if (no_autorepeat) {
- autorepeat(1, 0);
- }
- if (use_solid_bg) {
- solid_bg(1);
- }
- if (ncache || ncache0) {
- kde_no_animate(1);
- }
- X_LOCK;
- XTestDiscard_wr(dpy);
-#if LIBVNCSERVER_HAVE_LIBXDAMAGE
- if (xdamage) {
- XDamageDestroy(dpy, xdamage);
- }
-#endif
-#if LIBVNCSERVER_HAVE_LIBXTRAP
- if (trap_ctx) {
- XEFreeTC(trap_ctx);
- }
-#endif
- /* XXX rdpy_ctrl, etc. cannot close w/o blocking */
- XCloseDisplay_wr(dpy);
- X_UNLOCK;
-
- fflush(stderr);
-
- if (rm_flagfile) {
- unlink(rm_flagfile);
- rm_flagfile = NULL;
- }
-
- if (avahi) {
- avahi_cleanup();
- fflush(stderr);
- }
-
- exit(ret);
-}
-
-/* X11 error handlers */
-
-static XErrorHandler Xerror_def;
-static XIOErrorHandler XIOerr_def;
-
-int trap_xerror(Display *d, XErrorEvent *error) {
- trapped_xerror = 1;
- trapped_xerror_event = error;
-
- if (d) {} /* unused vars warning: */
-
- return 0;
-}
-
-int trap_xioerror(Display *d) {
- trapped_xioerror = 1;
-
- if (d) {} /* unused vars warning: */
-
- return 0;
-}
-
-int trap_getimage_xerror(Display *d, XErrorEvent *error) {
- trapped_getimage_xerror = 1;
- trapped_xerror_event = error;
-
- if (d) {} /* unused vars warning: */
-
- return 0;
-}
-
-/* Are silly Xorg people removing X_ShmAttach from XShm.h? */
-/* INDEED! What stupid, myopic morons... */
-/* Maintenance Monkeys busy typing at their keyboards... */
-#ifndef X_ShmAttach
-#define X_ShmAttach 1
-#endif
-
-static int Xerror(Display *d, XErrorEvent *error) {
- X_UNLOCK;
-
- if (getenv("X11VNC_PRINT_XERROR")) {
- fprintf(stderr, "Xerror: major_opcode: %d minor_opcode: %d error_code: %d\n",
- error->request_code, error->minor_code, error->error_code);
- }
-
- if (xshm_opcode > 0 && error->request_code == xshm_opcode) {
- if (error->minor_code == X_ShmAttach) {
- char *dstr = DisplayString(dpy);
- fprintf(stderr, "\nX11 MIT Shared Memory Attach failed:\n");
- fprintf(stderr, " Is your DISPLAY=%s on a remote machine?\n", dstr);
- if (strstr(dstr, "localhost:")) {
- fprintf(stderr, " Note: DISPLAY=localhost:N suggests a SSH X11 redir to a remote machine.\n");
- } else if (dstr[0] != ':') {
- fprintf(stderr, " Note: DISPLAY=hostname:N suggests a remote display.\n");
- }
- fprintf(stderr, " Suggestion, use: x11vnc -display :0 ... for local display :0\n\n");
- }
- }
-
- interrupted(0);
-
- if (d) {} /* unused vars warning: */
-
- return (*Xerror_def)(d, error);
-}
-
-void watch_loop(void);
-
-static int XIOerr(Display *d) {
- static int reopen = 0, rmax = 1;
- X_UNLOCK;
-
- if (getenv("X11VNC_REOPEN_DISPLAY")) {
- rmax = atoi(getenv("X11VNC_REOPEN_DISPLAY"));
- }
-
-#if !NO_X11
- if (reopen < rmax && getenv("X11VNC_REOPEN_DISPLAY")) {
- int db = getenv("X11VNC_REOPEN_DEBUG") ? 1 : 0;
- int sleepmax = 10, i;
- Display *save_dpy = dpy;
- char *dstr = strdup(DisplayString(save_dpy));
- reopen++;
- if (getenv("X11VNC_REOPEN_SLEEP_MAX")) {
- sleepmax = atoi(getenv("X11VNC_REOPEN_SLEEP_MAX"));
- }
- rfbLog("*** XIO error: Trying to reopen[%d/%d] display '%s'\n", reopen, rmax, dstr);
- rfbLog("*** XIO error: Note the reopened state may be unstable.\n");
- for (i=0; i < sleepmax; i++) {
- usleep (1000 * 1000);
- dpy = XOpenDisplay_wr(dstr);
- rfbLog("dpy[%d/%d]: %p\n", i+1, sleepmax, dpy);
- if (dpy) {
- break;
- }
- }
- last_open_xdisplay = time(NULL);
- if (dpy) {
- rfbLog("*** XIO error: Reopened display '%s' successfully.\n", dstr);
- if (db) rfbLog("*** XIO error: '%s' 0x%x\n", dstr, dpy);
- scr = DefaultScreen(dpy);
- rootwin = RootWindow(dpy, scr);
- if (db) rfbLog("*** XIO error: disable_grabserver\n");
- disable_grabserver(dpy, 0);
- if (db) rfbLog("*** XIO error: xrecord\n");
- zerodisp_xrecord();
- initialize_xrecord();
- if (db) rfbLog("*** XIO error: xdamage\n");
- create_xdamage_if_needed(1);
- if (db) rfbLog("*** XIO error: do_new_fb\n");
- if (using_shm) {
- if (db) rfbLog("*** XIO error: clean_shm\n");
- clean_shm(1);
- }
- do_new_fb(1);
- if (db) rfbLog("*** XIO error: check_xevents\n");
- check_xevents(1);
-
- /* sadly, we can never return... */
- if (db) rfbLog("*** XIO error: watch_loop\n");
- watch_loop();
- clean_up_exit(1);
- }
- }
-#endif
-
- interrupted(-1);
-
- if (d) {} /* unused vars warning: */
-
- return (*XIOerr_def)(d);
-}
-
-static char *xerrors[] = {
- "Success",
- "BadRequest",
- "BadValue",
- "BadWindow",
- "BadPixmap",
- "BadAtom",
- "BadCursor",
- "BadFont",
- "BadMatch",
- "BadDrawable",
- "BadAccess",
- "BadAlloc",
- "BadColor",
- "BadGC",
- "BadIDChoice",
- "BadName",
- "BadLength",
- "BadImplementation",
- "unknown"
-};
-static int xerrors_max = BadImplementation;
-
-char *xerror_string(XErrorEvent *error) {
- int index = -1;
- if (error) {
- index = (int) error->error_code;
- }
- if (0 <= index && index <= xerrors_max) {
- return xerrors[index];
- } else {
- return xerrors[xerrors_max+1];
- }
-}
-
-static char *crash_stack_command1 = NULL;
-static char *crash_stack_command2 = NULL;
-static char *crash_debug_command = NULL;
-
-void initialize_crash_handler(void) {
- int pid = program_pid;
- crash_stack_command1 = (char *) malloc(1000);
- crash_stack_command2 = (char *) malloc(1000);
- crash_debug_command = (char *) malloc(1000);
-
- snprintf(crash_stack_command1, 500, "echo where > /tmp/gdb.%d;"
- " env PATH=$PATH:/usr/local/bin:/usr/sfw/bin:/usr/bin"
- " gdb -x /tmp/gdb.%d -batch -n %s %d;"
- " rm -f /tmp/gdb.%d", pid, pid, program_name, pid, pid);
- snprintf(crash_stack_command2, 500, "pstack %d", program_pid);
-
- snprintf(crash_debug_command, 500, "gdb %s %d", program_name, pid);
-}
-
-static void crash_shell_help(void) {
- int pid = program_pid;
- fprintf(stderr, "\n");
- fprintf(stderr, " *** Welcome to the x11vnc crash shell! ***\n");
- fprintf(stderr, "\n");
- fprintf(stderr, "PROGRAM: %s PID: %d\n", program_name, pid);
- fprintf(stderr, "\n");
- fprintf(stderr, "POSSIBLE DEBUGGER COMMAND:\n");
- fprintf(stderr, "\n");
- fprintf(stderr, " %s\n", crash_debug_command);
- fprintf(stderr, "\n");
- fprintf(stderr, "Press \"q\" to quit.\n");
- fprintf(stderr, "Press \"h\" or \"?\" for this help.\n");
- fprintf(stderr, "Press \"s\" to try to run some commands to"
- " show a stack trace (gdb/pstack).\n");
- fprintf(stderr, "\n");
- fprintf(stderr, "Anything else is passed to -Q query function.\n");
- fprintf(stderr, "\n");
-}
-
-static void crash_shell(void) {
- char qry[1000], cmd[1000], line[1000];
- char *str, *p;
-
- crash_shell_help();
- fprintf(stderr, "\ncrash> ");
- while (fgets(line, 1000, stdin) != NULL) {
- str = lblanks(line);
-
- p = str;
- while(*p) {
- if (*p == '\n') {
- *p = '\0';
- }
- p++;
- }
-
- if (*str == 'q' && *(str+1) == '\0') {
- fprintf(stderr, "quiting.\n");
- return;
- } else if (*str == 'h' && *(str+1) == '\0') {
- crash_shell_help();
- } else if (*str == '?' && *(str+1) == '\0') {
- crash_shell_help();
- } else if (*str == 's' && *(str+1) == '\0') {
- sprintf(cmd, "sh -c '(%s) &'", crash_stack_command1);
- /* crash */
- if (no_external_cmds || !cmd_ok("crash")) {
- fprintf(stderr, "\nno_external_cmds=%d\n",
- no_external_cmds);
- goto crash_prompt;
- }
- fprintf(stderr, "\nrunning:\n\t%s\n\n",
- crash_stack_command1);
- system(cmd);
- usleep(1000*1000);
-
- sprintf(cmd, "sh -c '(%s) &'", crash_stack_command2);
- fprintf(stderr, "\nrunning:\n\t%s\n\n",
- crash_stack_command2);
- system(cmd);
- usleep(1000*1000);
- } else {
- snprintf(qry, 1000, "qry=%s", str);
- p = process_remote_cmd(qry, 1);
- fprintf(stderr, "\n\nresult:\n%s\n", p);
- free(p);
- }
-
-crash_prompt:
- fprintf(stderr, "crash> ");
- }
-}
-
-/*
- * General problem handler
- */
-static void interrupted (int sig) {
- exit_sig = sig;
- if (exit_flag) {
- fprintf(stderr, "extra[%d] signal: %d\n", exit_flag, sig);
- exit_flag++;
- if (use_threads) {
- usleep2(250 * 1000);
- } else if (exit_flag <= 2) {
- return;
- }
- if (rm_flagfile) {
- unlink(rm_flagfile);
- rm_flagfile = NULL;
- }
- exit(4);
- }
- exit_flag++;
- if (sig == 0) {
- fprintf(stderr, "caught X11 error:\n");
- if (crash_debug) { crash_shell(); }
- } else if (sig == -1) {
- fprintf(stderr, "caught XIO error:\n");
- } else {
- fprintf(stderr, "caught signal: %d\n", sig);
- }
- if (sig == SIGINT) {
- shut_down = 1;
- return;
- }
-
- if (crash_debug) {
- crash_shell();
- }
-
- X_UNLOCK;
-
- if (icon_mode) {
- clean_icon_mode();
- }
- /* remove the shm areas with quick=1: */
- clean_shm(1);
-
- if (sig == -1) {
- /* not worth trying any more cleanup, X server probably gone */
- if (rm_flagfile) {
- unlink(rm_flagfile);
- rm_flagfile = NULL;
- }
- exit(3);
- }
-
- /* X keyboard cleanups */
- delete_added_keycodes(0);
-
- if (clear_mods == 1) {
- clear_modifiers(0);
- } else if (clear_mods == 2) {
- clear_keys();
- } else if (clear_mods == 3) {
- clear_keys();
- clear_locks();
- }
- if (no_autorepeat) {
- autorepeat(1, 0);
- }
- if (use_solid_bg) {
- solid_bg(1);
- }
- if (ncache || ncache0) {
- kde_no_animate(1);
- }
- stop_stunnel();
-
- if (crash_debug) {
- crash_shell();
- }
-
- if (sig) {
- if (rm_flagfile) {
- unlink(rm_flagfile);
- rm_flagfile = NULL;
- }
- exit(2);
- }
-}
-
-static void ignore_sigs(char *list) {
- char *str, *p;
- int ignore = 1;
- if (list == NULL || *list == '\0') {
- return;
- }
- str = strdup(list);
- p = strtok(str, ":,");
-
-#define SETSIG(x, y) \
- if (strstr(p, x)) { \
- if (ignore) { \
- signal(y, SIG_IGN); \
- } else { \
- signal(y, interrupted); \
- } \
- }
-
-#ifdef SIG_IGN
- while (p) {
- if (!strcmp(p, "ignore")) {
- ignore = 1;
- } else if (!strcmp(p, "exit")) {
- ignore = 0;
- }
- /* Take off every 'sig' ;-) */
-#ifdef SIGHUP
- SETSIG("HUP", SIGHUP);
-#endif
-#ifdef SIGINT
- SETSIG("INT", SIGINT);
-#endif
-#ifdef SIGQUIT
- SETSIG("QUIT", SIGQUIT);
-#endif
-#ifdef SIGTRAP
- SETSIG("TRAP", SIGTRAP);
-#endif
-#ifdef SIGABRT
- SETSIG("ABRT", SIGABRT);
-#endif
-#ifdef SIGBUS
- SETSIG("BUS", SIGBUS);
-#endif
-#ifdef SIGFPE
- SETSIG("FPE", SIGFPE);
-#endif
-#ifdef SIGSEGV
- SETSIG("SEGV", SIGSEGV);
-#endif
-#ifdef SIGPIPE
- SETSIG("PIPE", SIGPIPE);
-#endif
-#ifdef SIGTERM
- SETSIG("TERM", SIGTERM);
-#endif
-#ifdef SIGUSR1
- SETSIG("USR1", SIGUSR1);
-#endif
-#ifdef SIGUSR2
- SETSIG("USR2", SIGUSR2);
-#endif
-#ifdef SIGCONT
- SETSIG("CONT", SIGCONT);
-#endif
-#ifdef SIGSTOP
- SETSIG("STOP", SIGSTOP);
-#endif
-#ifdef SIGTSTP
- SETSIG("TSTP", SIGTSTP);
-#endif
- p = strtok(NULL, ":,");
- }
-#endif /* SIG_IGN */
- free(str);
-}
-
-/* signal handlers */
-void initialize_signals(void) {
- signal(SIGHUP, interrupted);
- signal(SIGINT, interrupted);
- signal(SIGQUIT, interrupted);
- signal(SIGABRT, interrupted);
- signal(SIGTERM, interrupted);
- signal(SIGBUS, interrupted);
- signal(SIGSEGV, interrupted);
- signal(SIGFPE, interrupted);
-
- if (!sigpipe || *sigpipe == '\0' || !strcmp(sigpipe, "skip")) {
- ;
- } else if (strstr(sigpipe, "ignore:") == sigpipe) {
- ignore_sigs(sigpipe);
- } else if (strstr(sigpipe, "exit:") == sigpipe) {
- ignore_sigs(sigpipe);
- } else if (!strcmp(sigpipe, "ignore")) {
-#ifdef SIG_IGN
- signal(SIGPIPE, SIG_IGN);
-#endif
- } else if (!strcmp(sigpipe, "exit")) {
- rfbLog("initialize_signals: will exit on SIGPIPE\n");
- signal(SIGPIPE, interrupted);
- }
-
-#if NO_X11
- return;
-#else
- X_LOCK;
- Xerror_def = XSetErrorHandler(Xerror);
- XIOerr_def = XSetIOErrorHandler(XIOerr);
- X_UNLOCK;
-#endif /* NO_X11 */
-}
-
-void unset_signals(void) {
- signal(SIGHUP, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGQUIT, SIG_DFL);
- signal(SIGABRT, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGBUS, SIG_DFL);
- signal(SIGSEGV, SIG_DFL);
- signal(SIGFPE, SIG_DFL);
- signal(SIGPIPE, SIG_DFL);
-}
-
-void close_exec_fds(void) {
- int fd;
-#ifdef FD_CLOEXEC
- for (fd = 3; fd < 64; fd++) {
- int flags = fcntl(fd, F_GETFD);
- if (flags != -1) {
- flags |= FD_CLOEXEC;
- fcntl(fd, F_SETFD, flags);
- }
- }
-#endif
-}
-
-int known_sigpipe_mode(char *s) {
-/*
- * skip, ignore, exit
- */
- if (strstr(s, "ignore:") == s) {
- return 1;
- }
- if (strstr(s, "exit:") == s) {
- return 1;
- }
- if (strcmp(s, "skip") && strcmp(s, "ignore") &&
- strcmp(s, "exit")) {
- return 0;
- } else {
- return 1;
- }
-}
-
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-30 20:13:16 +0000