/*
* x11vnc: a VNC server for X displays.
*
* Copyright (c) 2002-2006 Karl J. Runge <runge@karlrunge.com>
* All rights reserved.
*
* This 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; version 2 of the License.
*
* This software 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 this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*
*
* This program is based heavily on the following programs:
*
* the originial x11vnc.c in libvncserver (Johannes E. Schindelin)
* x0rfbserver, the original native X vnc server (Jens Wagner)
* krfb, the KDE desktopsharing project (Tim Jansen)
*
* The primary goal of this program is to create a portable and simple
* command-line server utility that allows a VNC viewer to connect
* to an actual X display (as the above do). The only non-standard
* dependency of this program is the static library libvncserver.a.
* Although in some environments libjpeg.so or libz.so may not be
* readily available and needs to be installed, they may be found
* at ftp://ftp.uu.net/graphics/jpeg/ and http://www.gzip.org/zlib/,
* respectively. To increase portability it is written in plain C.
*
* Another goal is to improve performance and interactive response.
* The algorithm of x0rfbserver was used as a base. Many additional
* heuristics are also applied.
*
* Another goal is to add many features that enable and incourage creative
* usage and application of the tool. Apologies for the large number
* of options!
*
* To build:
*
* Obtain the libvncserver package (http://libvncserver.sourceforge.net).
* As of 12/2002 this version of x11vnc.c is contained in the libvncserver
* CVS tree and released in version 0.5.
*
* gcc should be used on all platforms. To build a threaded version put
* "-D_REENTRANT -DX11VNC_THREADED" in the environment variable CFLAGS
* or CPPFLAGS (e.g. before running the libvncserver configure). The
* threaded mode is a bit more responsive, but can be unstable (e.g.
* if more than one client the same tight or zrle encoding).
*
* Known shortcomings:
*
* The screen updates are good, but of course not perfect since the X
* display must be continuously polled and read for changes and this is
* slow for most hardware. This can be contrasted with receiving a change
* callback from the X server, if that were generally possible... (UPDATE:
* this is handled now with the X DAMAGE extension, but unfortunately
* that doesn't seem to address the slow read from the video h/w). So,
* e.g., opaque moves and similar window activity can be very painful;
* one has to modify one's behavior a bit.
*
* General audio at the remote display is lost unless one separately
* sets up some audio side-channel such as esd.
*
* It does not appear possible to query the X server for the current
* cursor shape. We can use XTest to compare cursor to current window's
* cursor, but we cannot extract what the cursor is... (UPDATE: we now
* use XFIXES extension for this. Also on Solaris and IRIX Overlay
* extensions exists that allow drawing the mouse into the framebuffer)
*
* The current *position* of the remote X mouse pointer is shown with
* the -cursor option. Further, if -cursorX or -X is used, a trick
* is done to at least show the root window cursor vs non-root cursor.
* (perhaps some heuristic can be done to further distinguish cases...,
* currently "-cursor some" is a first hack at this)
*
* Under XFIXES mode for showing the cursor shape, the cursor may be
* poorly approximated if it has transparency (alpha channel).
*
* Windows using visuals other than the default X visual may have
* their colors messed up. When using 8bpp indexed color, the colormap
* is attempted to be followed, but may become out of date. Use the
* -flashcmap option to have colormap flashing as the pointer moves
* windows with private colormaps (slow). Displays with mixed depth 8 and
* 24 visuals will incorrectly display windows using the non-default one.
* On Sun and Sgi hardware we can to work around this with -overlay.
*
* Feature -id <windowid> can be picky: it can crash for things like
* the window not sufficiently mapped into server memory, etc (UPDATE:
* we now use the -xrandr mechanisms to trap errors more robustly for
* this mode). SaveUnders menus, popups, etc will not be seen.
*
* Under some situations the keysym unmapping is not correct, especially
* if the two keyboards correspond to different languages. The -modtweak
* option is the default and corrects most problems. One can use the
* -xkb option to try to use the XKEYBOARD extension to clear up any
* remaining problems.
*
* Occasionally, a few tile updates can be missed leaving a patch of
* color that needs to be refreshed. This may only be when threaded,
* which is no longer the default.
*
* There seems to be a serious bug with simultaneous clients when
* threaded, currently the only workaround in this case is -nothreads
* (which is now the default).
*
*/
/* -- x11vnc.c -- */
#include "x11vnc.h"
#include "xwrappers.h"
#include "xdamage.h"
#include "xrecord.h"
#include "xevents.h"
#include "xinerama.h"
#include "xrandr.h"
#include "xkb_bell.h"
#include "win_utils.h"
#include "remote.h"
#include "scan.h"
#include "gui.h"
#include "help.h"
#include "user.h"
#include "cleanup.h"
#include "keyboard.h"
#include "pointer.h"
#include "cursor.h"
#include "userinput.h"
#include "screen.h"
#include "connections.h"
#include "rates.h"
#include "unixpw.h"
#include "inet.h"
#include "sslcmds.h"
#include "sslhelper.h"
#include "selection.h"
#include "pm.h"
/*
* main routine for the x11vnc program
*/
static void check_cursor_changes(void);
static void record_last_fb_update(void);
static int choose_delay(double dt);
static void watch_loop(void);
static char *choose_title(char *display);
static int limit_shm(void);
static void check_rcfile(int argc, char **argv);
static void immediate_switch_user(int argc, char* argv[]);
static void print_settings(int try_http, int bg, char *gui_str);
static void check_loop_mode(int argc, char* argv[]);
static void check_cursor_changes(void) {
static double last_push = 0.0;
if (unixpw_in_progress) return;
cursor_changes += check_x11_pointer();
if (cursor_changes) {
double tm, max_push = 0.125, multi_push = 0.01, wait = 0.02;
int cursor_shape, dopush = 0, link, latency, netrate;
if (! all_clients_initialized()) {
/* play it safe */
return;
}
if (0) cursor_shape = cursor_shape_updates_clients(screen);
dtime0(&tm);
link = link_rate(&latency, &netrate);
if (link == LR_DIALUP) {
max_push = 0.2;
wait = 0.05;
} else if (link == LR_BROADBAND) {
max_push = 0.075;
wait = 0.05;
} else if (link == LR_LAN) {
max_push = 0.01;
} else if (latency < 5 && netrate > 200) {
max_push = 0.01;
}
if (tm > last_push + max_push) {
dopush = 1;
} else if (cursor_changes > 1 && tm > last_push + multi_push) {
dopush = 1;
}
if (dopush) {
mark_rect_as_modified(0, 0, 1, 1, 1);
fb_push_wait(wait, FB_MOD);
last_push = tm;
} else {
rfbPE(0);
}
}
cursor_changes = 0;
}
static void record_last_fb_update(void) {
static int rbs0 = -1;
static time_t last_call = 0;
time_t now = time(0);
int rbs = -1;
rfbClientIteratorPtr iter;
rfbClientPtr cl;
if (last_fb_bytes_sent == 0) {
last_fb_bytes_sent = now;
last_call = now;
}
if (now <= last_call + 1) {
/* check every second or so */
return;
}
if (unixpw_in_progress) return;
last_call = now;
if (! screen) {
return;
}
iter = rfbGetClientIterator(screen);
while( (cl = rfbClientIteratorNext(iter)) ) {
rbs += cl->rawBytesEquivalent;
}
rfbReleaseClientIterator(iter);
if (rbs != rbs0) {
rbs0 = rbs;
if (debug_tiles > 1) {
printf("record_last_fb_update: %d %d\n",
(int) now, (int) last_fb_bytes_sent);
}
last_fb_bytes_sent = now;
}
}
static int choose_delay(double dt) {
static double t0 = 0.0, t1 = 0.0, t2 = 0.0, now;
static int x0, y0, x1, y1, x2, y2, first = 1;
int dx0, dy0, dx1, dy1, dm, i, msec = waitms;
double cut1 = 0.15, cut2 = 0.075, cut3 = 0.25;
double bogdown_time = 0.25, bave = 0.0;
int bogdown = 1, bcnt = 0;
int ndt = 8, nave = 3;
double fac = 1.0;
int db = 0;
static double dts[8];
if (waitms == 0) {
return waitms;
}
if (nofb) {
return waitms;
}
if (first) {
for(i=0; i<ndt; i++) {
dts[i] = 0.0;
}
first = 0;
}
now = dnow();
/*
* first check for bogdown, e.g. lots of activity, scrolling text
* from command output, etc.
*/
if (nap_ok) {
dt = 0.0;
}
if (! wait_bog) {
bogdown = 0;
} else if (button_mask || now < last_keyboard_time + 2*bogdown_time) {
/*
* let scrolls & keyboard input through the normal way
* otherwise, it will likely just annoy them.
*/
bogdown = 0;
} else if (dt > 0.0) {
/*
* inspect recent dt's:
* 0 1 2 3 4 5 6 7 dt
* ^ ^ ^
*/
for (i = ndt - (nave - 1); i < ndt; i++) {
bave += dts[i];
bcnt++;
if (dts[i] < bogdown_time) {
bogdown = 0;
break;
}
}
bave += dt;
bcnt++;
bave = bave / bcnt;
if (dt < bogdown_time) {
bogdown = 0;
}
} else {
bogdown = 0;
}
/* shift for next time */
for (i = 0; i < ndt-1; i++) {
dts[i] = dts[i+1];
}
dts[ndt-1] = dt;
if (0 && dt > 0.0) fprintf(stderr, "dt: %.5f %.4f\n", dt, dnow() - x11vnc_start);
if (bogdown) {
if (use_xdamage) {
/* DAMAGE can queue ~1000 rectangles for a scroll */
clear_xdamage_mark_region(NULL, 0);
}
msec = (int) (1000 * 1.75 * bave);
if (dts[ndt - nave - 1] > 0.75 * bave) {
msec = 1.5 * msec;
set_xdamage_mark(0, 0, dpy_x, dpy_y);
}
if (msec > 1500) {
msec = 1500;
}
if (msec < waitms) {
msec = waitms;
}
db = (db || debug_tiles);
if (db) fprintf(stderr, "bogg[%d] %.3f %.3f %.3f %.3f\n",
msec, dts[ndt-4], dts[ndt-3], dts[ndt-2], dts[ndt-1]);
return msec;
}
/* next check for pointer motion, keystrokes, to speed up */
t2 = dnow();
x2 = cursor_x;
y2 = cursor_y;
dx0 = nabs(x1 - x0);
dy0 = nabs(y1 - y0);
dx1 = nabs(x2 - x1);
dy1 = nabs(y2 - y1);
if (dx1 > dy1) {
dm = dx1;
} else {
dm = dy1;
}
if ((dx0 || dy0) && (dx1 || dy1)) {
if (t2 < t0 + cut1 || t2 < t1 + cut2 || dm > 20) {
fac = wait_ui * 1.25;
}
} else if ((dx1 || dy1) && dm > 40) {
fac = wait_ui;
}
if (fac == 1 && t2 < last_keyboard_time + cut3) {
fac = wait_ui;
}
msec = (int) ((double) waitms / fac);
if (msec == 0) {
msec = 1;
}
x0 = x1;
y0 = y1;
t0 = t1;
x1 = x2;
y1 = y2;
t1 = t2;
return msec;
}
/*
* main x11vnc loop: polls, checks for events, iterate libvncserver, etc.
*/
static void watch_loop(void) {
int cnt = 0, tile_diffs = 0, skip_pe = 0;
double tm, dtr, dt = 0.0;
time_t start = time(0);
if (use_threads) {
rfbRunEventLoop(screen, -1, TRUE);
}
while (1) {
got_user_input = 0;
got_pointer_input = 0;
got_pointer_calls = 0;
got_keyboard_input = 0;
got_keyboard_calls = 0;
urgent_update = 0;
if (! use_threads) {
dtime0(&tm);
if (! skip_pe) {
measure_send_rates(1);
rfbPE(-1);
measure_send_rates(0);
fb_update_sent(NULL);
}
dtr = dtime(&tm);
if (! cursor_shape_updates) {
/* undo any cursor shape requests */
disable_cursor_shape_updates(screen);
}
if (screen && screen->clientHead) {
int ret = check_user_input(dt, dtr,
tile_diffs, &cnt);
/* true means loop back for more input */
if (ret == 2) {
skip_pe = 1;
}
if (ret) {
if (debug_scroll) fprintf(stderr, "watch_loop: LOOP-BACK: %d\n", ret);
continue;
}
}
/* watch for viewonly input piling up: */
if ((got_pointer_calls > got_pointer_input)
|| (got_keyboard_calls > got_keyboard_input)) {
eat_viewonly_input(10, 3);
}
} else {
if (0 && use_xrecord) {
/* XXX not working */
check_xrecord();
}
if (wireframe && button_mask) {
check_wireframe();
}
}
skip_pe = 0;
if (shut_down) {
clean_up_exit(0);
}
if (! urgent_update) {
if (do_copy_screen) {
do_copy_screen = 0;
copy_screen();
}
check_new_clients();
check_xevents();
check_autorepeat();
check_pm();
check_keycode_state();
check_connect_inputs();
check_gui_inputs();
check_stunnel();
check_openssl();
check_https();
record_last_fb_update();
check_padded_fb();
check_fixscreen();
check_xdamage_state();
check_xrecord_reset(0);
check_add_keysyms();
check_new_passwds();
if (started_as_root) {
check_switched_user();
}
if (first_conn_timeout < 0) {
start = time(0);
first_conn_timeout = -first_conn_timeout;
}
}
if (! screen || ! screen->clientHead) {
/* waiting for a client */
if (first_conn_timeout) {
if (time(0) - start > first_conn_timeout) {
rfbLog("No client after %d secs.\n",
first_conn_timeout);
shut_down = 1;
}
}
usleep(200 * 1000);
continue;
}
if (first_conn_timeout && all_clients_initialized()) {
first_conn_timeout = 0;
}
if (nofb) {
/* no framebuffer polling needed */
if (cursor_pos_updates) {
check_x11_pointer();
}
continue;
}
if (button_mask && (!show_dragging || pointer_mode == 0)) {
/*
* if any button is pressed do not update rfb
* screen, but do flush the X11 display.
*/
X_LOCK;
XFlush(dpy);
X_UNLOCK;
dt = 0.0;
} else {
static double last_dt = 0.0;
double xdamage_thrash = 0.4;
check_cursor_changes();
/* for timing the scan to try to detect thrashing */
if (use_xdamage && last_dt > xdamage_thrash) {
clear_xdamage_mark_region(NULL, 0);
}
dtime0(&tm);
if (use_snapfb) {
int t, tries = 5;
copy_snap();
for (t =0; t < tries; t++) {
tile_diffs = scan_for_updates(0);
}
} else {
tile_diffs = scan_for_updates(0);
}
dt = dtime(&tm);
if (! nap_ok) {
last_dt = dt;
}
if ((debug_tiles || debug_scroll > 1 || debug_wireframe > 1)
&& (tile_diffs > 4 || debug_tiles > 1)) {
double rate = (tile_x * tile_y * bpp/8 * tile_diffs) / dt;
fprintf(stderr, "============================= TILES: %d dt: %.4f"
" t: %.4f %.2f MB/s nap_ok: %d\n", tile_diffs, dt,
tm - x11vnc_start, rate/1000000.0, nap_ok);
}
}
/* sleep a bit to lessen load */
if (! urgent_update) {
int wait = choose_delay(dt);
if (wait > 2*waitms) {
/* bog case, break it up */
nap_sleep(wait, 10);
} else {
usleep(wait * 1000);
}
}
cnt++;
}
}
/*
* choose a desktop name
*/
static char *choose_title(char *display) {
static char title[(MAXN+10)];
strcpy(title, "x11vnc");
if (display == NULL) {
display = getenv("DISPLAY");
}
if (display == NULL) {
return title;
}
title[0] = '\0';
if (display[0] == ':') {
if (this_host() != NULL) {
strncpy(title, this_host(), MAXN - strlen(title));
}
}
strncat(title, display, MAXN - strlen(title));
if (subwin && valid_window(subwin, NULL, 0)) {
char *name;
if (XFetchName(dpy, subwin, &name)) {
strncat(title, " ", MAXN - strlen(title));
strncat(title, name, MAXN - strlen(title));
}
}
return title;
}
/*
* check blacklist for OSs with tight shm limits.
*/
static int limit_shm(void) {
int limit = 0;
if (UT.sysname == NULL) {
return 0;
}
if (!strcmp(UT.sysname, "SunOS")) {
char *r = UT.release;
if (*r == '5' && *(r+1) == '.') {
if (strchr("2345678", *(r+2)) != NULL) {
limit = 1;
}
}
} else if (!strcmp(UT.sysname, "Darwin")) {
limit = 1;
}
if (limit && ! quiet) {
fprintf(stderr, "reducing shm usage on %s %s (adding "
"-onetile)\n", UT.sysname, UT.release);
}
return limit;
}
/*
* quick-n-dirty ~/.x11vncrc: each line (except # comments) is a cmdline option.
*/
static int argc2 = 0;
static char **argv2;
static void check_rcfile(int argc, char **argv) {
int i, j, pwlast, norc = 0, argmax = 1024;
char *infile = NULL;
char rcfile[1024];
FILE *rc = NULL;
for (i=1; i < argc; i++) {
if (!strcmp(argv[i], "-printgui")) {
fprintf(stdout, "%s", get_gui_code());
fflush(stdout);
exit(0);
}
if (!strcmp(argv[i], "-norc")) {
norc = 1;
got_norc = 1;
}
if (!strcmp(argv[i], "-QD")) {
norc = 1;
}
if (!strcmp(argv[i], "-rc")) {
if (i+1 >= argc) {
fprintf(stderr, "-rc option requires a "
"filename\n");
exit(1);
} else {
infile = argv[i+1];
}
}
}
rc_norc = norc;
rc_rcfile = strdup("");
if (norc) {
;
} else if (infile != NULL) {
rc = fopen(infile, "r");
rc_rcfile = strdup(infile);
if (rc == NULL) {
fprintf(stderr, "could not open rcfile: %s\n", infile);
perror("fopen");
exit(1);
}
} else {
char *home = get_home_dir();
if (! home) {
norc = 1;
} else {
strncpy(rcfile, home, 500);
free(home);
strcat(rcfile, "/.x11vncrc");
infile = rcfile;
rc = fopen(rcfile, "r");
if (rc == NULL) {
norc = 1;
} else {
rc_rcfile = strdup(rcfile);
rc_rcfile_default = 1;
}
}
}
argv2 = (char **) malloc(argmax * sizeof(char *));
argv2[argc2++] = strdup(argv[0]);
if (! norc) {
char line[4096], parm[100], tmp[101];
char *buf, *tbuf;
struct stat sbuf;
int sz;
if (fstat(fileno(rc), &sbuf) != 0) {
fprintf(stderr, "problem with %s\n", infile);
perror("fstat");
exit(1);
}
sz = sbuf.st_size+1; /* allocate whole file size */
if (sz < 1024) {
sz = 1024;
}
buf = (char *) malloc(sz);
buf[0] = '\0';
while (fgets(line, 4096, rc) != NULL) {
char *q, *p = line;
char c;
int cont = 0;
q = p;
c = '\0';
while (*q) {
if (*q == '#') {
if (c != '\\') {
*q = '\0';
break;
}
}
c = *q;
q++;
}
q = p;
c = '\0';
while (*q) {
if (*q == '\n') {
if (c == '\\') {
cont = 1;
*q = '\0';
*(q-1) = ' ';
break;
}
while (isspace(*q)) {
*q = '\0';
if (q == p) {
break;
}
q--;
}
break;
}
c = *q;
q++;
}
if (q != p && !cont) {
if (*q == '\0') {
q--;
}
while (isspace(*q)) {
*q = '\0';
if (q == p) {
break;
}
q--;
}
}
p = lblanks(p);
strncat(buf, p, sz - strlen(buf) - 1);
if (cont) {
continue;
}
if (buf[0] == '\0') {
continue;
}
i = 0;
q = buf;
while (*q) {
i++;
if (*q == '\n' || isspace(*q)) {
break;
}
q++;
}
if (i >= 100) {
fprintf(stderr, "invalid rcfile line: %s/%s\n",
p, buf);
exit(1);
}
if (sscanf(buf, "%s", parm) != 1) {
fprintf(stderr, "invalid rcfile line: %s\n", p);
exit(1);
}
if (parm[0] == '-') {
strncpy(tmp, parm, 100);
} else {
tmp[0] = '-';
strncpy(tmp+1, parm, 100);
}
argv2[argc2++] = strdup(tmp);
if (argc2 >= argmax) {
fprintf(stderr, "too many rcfile options\n");
exit(1);
}
p = buf;
p += strlen(parm);
p = lblanks(p);
if (*p == '\0') {
buf[0] = '\0';
continue;
}
tbuf = (char *) calloc(strlen(p) + 1, 1);
j = 0;
while (*p) {
if (*p == '\\' && *(p+1) == '#') {
;
} else {
tbuf[j++] = *p;
}
p++;
}
argv2[argc2++] = strdup(tbuf);
free(tbuf);
if (argc2 >= argmax) {
fprintf(stderr, "too many rcfile options\n");
exit(1);
}
buf[0] = '\0';
}
fclose(rc);
free(buf);
}
pwlast = 0;
for (i=1; i < argc; i++) {
argv2[argc2++] = strdup(argv[i]);
if (pwlast || !strcmp("-passwd", argv[i])
|| !strcmp("-viewpasswd", argv[i])) {
char *p = argv[i];
if (pwlast) {
pwlast = 0;
} else {
pwlast = 1;
}
strzero(p);
}
if (argc2 >= argmax) {
fprintf(stderr, "too many rcfile options\n");
exit(1);
}
}
}
static void immediate_switch_user(int argc, char* argv[]) {
int i;
for (i=1; i < argc; i++) {
char *u;
if (strcmp(argv[i], "-users")) {
continue;
}
if (i == argc - 1) {
fprintf(stderr, "not enough arguments for: -users\n");
exit(1);
}
if (*(argv[i+1]) != '=') {
break;
}
/* wants an immediate switch: =bob */
u = strdup(argv[i+1]);
*u = '+';
if (strstr(u, "+guess") == u) {
fprintf(stderr, "invalid user: %s\n", u+1);
exit(1);
}
if (!switch_user(u, 0)) {
fprintf(stderr, "Could not switch to user: %s\n", u+1);
exit(1);
} else {
fprintf(stderr, "Switched to user: %s\n", u+1);
started_as_root = 2;
}
free(u);
break;
}
}
static void quick_pw(char *str) {
char *p, *q;
char tmp[1024];
int db = 0;
if (db) fprintf(stderr, "quick_pw: %s\n", str);
if (! str || str[0] == '\0') {
exit(1);
}
if (str[0] != '%') {
exit(1);
}
/*
* "%-" or "%stdin" means read one line from stdin.
*
* "%env" means it is in $UNIXPW env var.
*
* starting "%/" or "%." means read the first line from that file.
*
* "%%" or "%" means prompt user.
*
* otherwise: %user:pass
*/
if (!strcmp(str, "%-") || !strcmp(str, "%stdin")) {
if(fgets(tmp, 1024, stdin) == NULL) {
exit(1);
}
q = strdup(tmp);
} else if (!strcmp(str, "%env")) {
if (getenv("UNIXPW") == NULL) {
exit(1);
}
q = strdup(getenv("UNIXPW"));
} else if (!strcmp(str, "%%") || !strcmp(str, "%")) {
char *t, inp[1024];
fprintf(stdout, "username: ");
if(fgets(tmp, 128, stdin) == NULL) {
exit(1);
}
strcpy(inp, tmp);
t = strchr(inp, '\n');
if (t) {
*t = ':';
} else {
strcat(inp, ":");
}
fprintf(stdout, "password: ");
/* no_external_cmds does not apply */
system("stty -echo");
if(fgets(tmp, 128, stdin) == NULL) {
fprintf(stdout, "\n");
system("stty echo");
exit(1);
}
system("stty echo");
fprintf(stdout, "\n");
strcat(inp, tmp);
q = strdup(inp);
} else if (str[1] == '/' || str[1] == '.') {
FILE *in = fopen(str+1, "r");
if (in == NULL) {
exit(1);
}
if(fgets(tmp, 1024, in) == NULL) {
exit(1);
}
q = strdup(tmp);
} else {
q = strdup(str+1);
}
p = (char *) malloc(strlen(q) + 10);
strcpy(p, q);
if (strchr(p, '\n') == NULL) {
strcat(p, "\n");
}
if ((q = strchr(p, ':')) == NULL) {
exit(1);
}
*q = '\0';
if (db) fprintf(stderr, "'%s' '%s'\n", p, q+1);
if (unixpw_nis) {
if (crypt_verify(p, q+1)) {
fprintf(stdout, "Y %s\n", p);
exit(0);
} else {
fprintf(stdout, "N %s\n", p);
exit(1);
}
} else {
if (su_verify(p, q+1)) {
fprintf(stdout, "Y %s\n", p);
exit(0);
} else {
fprintf(stdout, "N %s\n", p);
exit(1);
}
}
/* NOTREACHED */
exit(1);
}
static void print_settings(int try_http, int bg, char *gui_str) {
fprintf(stderr, "\n");
fprintf(stderr, "Settings:\n");
fprintf(stderr, " display: %s\n", use_dpy ? use_dpy
: "null");
#if SMALL_FOOTPRINT < 2
fprintf(stderr, " authfile: %s\n", auth_file ? auth_file
: "null");
fprintf(stderr, " subwin: 0x%lx\n", subwin);
fprintf(stderr, " -sid mode: %d\n", rootshift);
fprintf(stderr, " clip: %s\n", clip_str ? clip_str
: "null");
fprintf(stderr, " flashcmap: %d\n", flash_cmap);
fprintf(stderr, " shiftcmap: %d\n", shift_cmap);
fprintf(stderr, " force_idx: %d\n", force_indexed_color);
fprintf(stderr, " cmap8to24: %d\n", cmap8to24);
fprintf(stderr, " 8to24_opts: %s\n", cmap8to24_str ? cmap8to24_str
: "null");
fprintf(stderr, " visual: %s\n", visual_str ? visual_str
: "null");
fprintf(stderr, " overlay: %d\n", overlay);
fprintf(stderr, " ovl_cursor: %d\n", overlay_cursor);
fprintf(stderr, " scaling: %d %.4f\n", scaling, scale_fac);
fprintf(stderr, " viewonly: %d\n", view_only);
fprintf(stderr, " shared: %d\n", shared);
fprintf(stderr, " conn_once: %d\n", connect_once);
fprintf(stderr, " timeout: %d\n", first_conn_timeout);
fprintf(stderr, " inetd: %d\n", inetd);
fprintf(stderr, " filexfer: %d\n", filexfer);
fprintf(stderr, " http: %d\n", try_http);
fprintf(stderr, " connect: %s\n", client_connect
? client_connect : "null");
fprintf(stderr, " connectfile %s\n", client_connect_file
? client_connect_file : "null");
fprintf(stderr, " vnc_conn: %d\n", vnc_connect);
fprintf(stderr, " allow: %s\n", allow_list ? allow_list
: "null");
fprintf(stderr, " input: %s\n", allowed_input_str
? allowed_input_str : "null");
fprintf(stderr, " passfile: %s\n", passwdfile ? passwdfile
: "null");
fprintf(stderr, " unixpw: %d\n", unixpw);
fprintf(stderr, " unixpw_lst: %s\n", unixpw_list ? unixpw_list:"null");
fprintf(stderr, " stunnel: %d\n", use_stunnel);
fprintf(stderr, " accept: %s\n", accept_cmd ? accept_cmd
: "null");
fprintf(stderr, " accept: %s\n", afteraccept_cmd ? afteraccept_cmd
: "null");
fprintf(stderr, " gone: %s\n", gone_cmd ? gone_cmd
: "null");
fprintf(stderr, " users: %s\n", users_list ? users_list
: "null");
fprintf(stderr, " using_shm: %d\n", using_shm);
fprintf(stderr, " flipbytes: %d\n", flip_byte_order);
fprintf(stderr, " onetile: %d\n", single_copytile);
fprintf(stderr, " solid: %s\n", solid_str
? solid_str : "null");
fprintf(stderr, " blackout: %s\n", blackout_str
? blackout_str : "null");
fprintf(stderr, " xinerama: %d\n", xinerama);
fprintf(stderr, " xtrap: %d\n", xtrap_input);
fprintf(stderr, " xrandr: %d\n", xrandr);
fprintf(stderr, " xrandrmode: %s\n", xrandr_mode ? xrandr_mode
: "null");
fprintf(stderr, " padgeom: %s\n", pad_geometry
? pad_geometry : "null");
fprintf(stderr, " logfile: %s\n", logfile ? logfile
: "null");
fprintf(stderr, " logappend: %d\n", logfile_append);
fprintf(stderr, " flag: %s\n", flagfile ? flagfile
: "null");
fprintf(stderr, " rc_file: \"%s\"\n", rc_rcfile ? rc_rcfile
: "null");
fprintf(stderr, " norc: %d\n", rc_norc);
fprintf(stderr, " dbg: %d\n", crash_debug);
fprintf(stderr, " bg: %d\n", bg);
fprintf(stderr, " mod_tweak: %d\n", use_modifier_tweak);
fprintf(stderr, " isolevel3: %d\n", use_iso_level3);
fprintf(stderr, " xkb: %d\n", use_xkb_modtweak);
fprintf(stderr, " skipkeys: %s\n",
skip_keycodes ? skip_keycodes : "null");
fprintf(stderr, " sloppykeys: %d\n", sloppy_keys);
fprintf(stderr, " skip_dups: %d\n", skip_duplicate_key_events);
fprintf(stderr, " addkeysyms: %d\n", add_keysyms);
fprintf(stderr, " xkbcompat: %d\n", xkbcompat);
fprintf(stderr, " clearmods: %d\n", clear_mods);
fprintf(stderr, " remap: %s\n", remap_file ? remap_file
: "null");
fprintf(stderr, " norepeat: %d\n", no_autorepeat);
fprintf(stderr, " norepeatcnt:%d\n", no_repeat_countdown);
fprintf(stderr, " nofb: %d\n", nofb);
fprintf(stderr, " watchbell: %d\n", watch_bell);
fprintf(stderr, " watchsel: %d\n", watch_selection);
fprintf(stderr, " watchprim: %d\n", watch_primary);
fprintf(stderr, " seldir: %s\n", sel_direction ?
sel_direction : "null");
fprintf(stderr, " cursor: %d\n", show_cursor);
fprintf(stderr, " multicurs: %d\n", show_multiple_cursors);
fprintf(stderr, " curs_mode: %s\n", multiple_cursors_mode
? multiple_cursors_mode : "null");
fprintf(stderr, " arrow: %d\n", alt_arrow);
fprintf(stderr, " xfixes: %d\n", use_xfixes);
fprintf(stderr, " alphacut: %d\n", alpha_threshold);
fprintf(stderr, " alphafrac: %.2f\n", alpha_frac);
fprintf(stderr, " alpharemove:%d\n", alpha_remove);
fprintf(stderr, " alphablend: %d\n", alpha_blend);
fprintf(stderr, " cursorshape:%d\n", cursor_shape_updates);
fprintf(stderr, " cursorpos: %d\n", cursor_pos_updates);
fprintf(stderr, " xwarpptr: %d\n", use_xwarppointer);
fprintf(stderr, " buttonmap: %s\n", pointer_remap
? pointer_remap : "null");
fprintf(stderr, " dragging: %d\n", show_dragging);
fprintf(stderr, " wireframe: %s\n", wireframe_str ?
wireframe_str : WIREFRAME_PARMS);
fprintf(stderr, " wirecopy: %s\n", wireframe_copyrect ?
wireframe_copyrect : wireframe_copyrect_default);
fprintf(stderr, " scrollcopy: %s\n", scroll_copyrect ?
scroll_copyrect : scroll_copyrect_default);
fprintf(stderr, " scr_area: %d\n", scrollcopyrect_min_area);
fprintf(stderr, " scr_skip: %s\n", scroll_skip_str ?
scroll_skip_str : scroll_skip_str0);
fprintf(stderr, " scr_inc: %s\n", scroll_good_str ?
scroll_good_str : scroll_good_str0);
fprintf(stderr, " scr_keys: %s\n", scroll_key_list_str ?
scroll_key_list_str : "null");
fprintf(stderr, " scr_term: %s\n", scroll_term_str ?
scroll_term_str : "null");
fprintf(stderr, " scr_keyrep: %s\n", max_keyrepeat_str ?
max_keyrepeat_str : "null");
fprintf(stderr, " scr_parms: %s\n", scroll_copyrect_str ?
scroll_copyrect_str : SCROLL_COPYRECT_PARMS);
fprintf(stderr, " fixscreen: %s\n", screen_fixup_str ?
screen_fixup_str : "null");
fprintf(stderr, " noxrecord: %d\n", noxrecord);
fprintf(stderr, " grabbuster: %d\n", grab_buster);
fprintf(stderr, " ptr_mode: %d\n", pointer_mode);
fprintf(stderr, " inputskip: %d\n", ui_skip);
fprintf(stderr, " speeds: %s\n", speeds_str
? speeds_str : "null");
fprintf(stderr, " wmdt: %s\n", wmdt_str
? wmdt_str : "null");
fprintf(stderr, " debug_ptr: %d\n", debug_pointer);
fprintf(stderr, " debug_key: %d\n", debug_keyboard);
fprintf(stderr, " defer: %d\n", defer_update);
fprintf(stderr, " waitms: %d\n", waitms);
fprintf(stderr, " wait_ui: %.2f\n", wait_ui);
fprintf(stderr, " nowait_bog: %d\n", !wait_bog);
fprintf(stderr, " slow_fb: %.2f\n", slow_fb);
fprintf(stderr, " readtimeout: %d\n", rfbMaxClientWait/1000);
fprintf(stderr, " take_naps: %d\n", take_naps);
fprintf(stderr, " sb: %d\n", screen_blank);
fprintf(stderr, " fbpm: %d\n", !watch_fbpm);
fprintf(stderr, " xdamage: %d\n", use_xdamage);
fprintf(stderr, " xd_area: %d\n", xdamage_max_area);
fprintf(stderr, " xd_mem: %.3f\n", xdamage_memory);
fprintf(stderr, " sigpipe: %s\n", sigpipe
? sigpipe : "null");
fprintf(stderr, " threads: %d\n", use_threads);
fprintf(stderr, " fs_frac: %.2f\n", fs_frac);
fprintf(stderr, " gaps_fill: %d\n", gaps_fill);
fprintf(stderr, " grow_fill: %d\n", grow_fill);
fprintf(stderr, " tile_fuzz: %d\n", tile_fuzz);
fprintf(stderr, " snapfb: %d\n", use_snapfb);
fprintf(stderr, " rawfb: %s\n", raw_fb_str
? raw_fb_str : "null");
fprintf(stderr, " pipeinput: %s\n", pipeinput_str
? pipeinput_str : "null");
fprintf(stderr, " gui: %d\n", launch_gui);
fprintf(stderr, " gui_mode: %s\n", gui_str
? gui_str : "null");
fprintf(stderr, " noremote: %d\n", !accept_remote_cmds);
fprintf(stderr, " unsafe: %d\n", !safe_remote_only);
fprintf(stderr, " privremote: %d\n", priv_remote);
fprintf(stderr, " safer: %d\n", more_safe);
fprintf(stderr, " nocmds: %d\n", no_external_cmds);
fprintf(stderr, " deny_all: %d\n", deny_all);
fprintf(stderr, "\n");
#endif
rfbLog("x11vnc version: %s\n", lastmod);
}
static void check_loop_mode(int argc, char* argv[]) {
int i;
int loop_mode = 0, loop_sleep = 2000, loop_max = 0;
for (i=1; i < argc; i++) {
char *p = argv[i];
if (strstr(p, "--") == p) {
p++;
}
if (strstr(p, "-loop") == p) {
char *q;
loop_mode = 1;
if ((q = strchr(p, ',')) != NULL) {
loop_max = atoi(q+1);
*q = '\0';
}
q = strpbrk(p, "0123456789");
if (q) {
loop_sleep = atoi(q);
if (loop_sleep <= 0) {
loop_sleep = 10;
}
}
}
}
if (loop_mode && getenv("X11VNC_LOOP_MODE") == NULL) {
#if LIBVNCSERVER_HAVE_FORK
char **argv2;
int k, i = 1;
set_env("X11VNC_LOOP_MODE", "1");
argv2 = (char **) malloc((argc+1)*sizeof(char *));
for (k=0; k < argc+1; k++) {
argv2[k] = NULL;
if (k < argc) {
argv2[k] = argv[k];
}
}
while (1) {
int status;
pid_t p;
fprintf(stderr, "\n --- x11vnc loop: %d ---\n\n", i++);
fflush(stderr);
usleep(500 * 1000);
if ((p = fork()) > 0) {
fprintf(stderr, " --- x11vnc loop: waiting "
"for: %d\n\n", p);
wait(&status);
} else if (p == -1) {
fprintf(stderr, "could not fork\n");
perror("fork");
exit(1);
} else {
/* no_external_cmds does not apply */
execvp(argv[0], argv2);
exit(1);
}
if (loop_max > 0 && i > loop_max) {
fprintf(stderr, "\n --- x11vnc loop: did %d"
" done. ---\n\n", loop_max);
break;
}
fprintf(stderr, "\n --- x11vnc loop: sleeping %d ms "
"---\n\n", loop_sleep);
usleep(loop_sleep * 1000);
}
exit(0);
#else
fprintf(stderr, "fork unavailable, cannot do -loop mode\n");
exit(1);
#endif
}
}
static void store_homedir_passwd(char *file) {
char str1[32], str2[32], *p, *h, *f;
struct stat sbuf;
str1[0] = '\0';
str2[0] = '\0';
if (no_external_cmds) {
fprintf(stderr, "-nocmds cannot be used with -storepasswd\n");
exit(1);
}
fprintf(stderr, "Enter VNC password: ");
system("stty -echo");
if (fgets(str1, 32, stdin) == NULL) {
system("stty echo");
exit(1);
}
fprintf(stderr, "\n");
fprintf(stderr, "Verify password: ");
if (fgets(str2, 32, stdin) == NULL) {
system("stty echo");
exit(1);
}
fprintf(stderr, "\n");
system("stty echo");
if ((p = strchr(str1, '\n')) != NULL) {
*p = '\0';
}
if ((p = strchr(str2, '\n')) != NULL) {
*p = '\0';
}
if (strcmp(str1, str2)) {
fprintf(stderr, "** passwords differ.\n");
exit(1);
}
if (str1[0] == '\0') {
fprintf(stderr, "** no password supplied.\n");
exit(1);
}
if (file != NULL) {
f = file;
} else {
h = getenv("HOME");
if (! h) {
fprintf(stderr, "** $HOME not set.\n");
exit(1);
}
f = (char *) malloc(strlen(h) + strlen("/.vnc/passwd") + 1);
sprintf(f, "%s/.vnc", h);
if (stat(f, &sbuf) != 0) {
if (mkdir(f, 0755) != 0) {
fprintf(stderr, "** could not create directory %s\n", f);
perror("mkdir");
exit(1);
}
} else if (! S_ISDIR(sbuf.st_mode)) {
fprintf(stderr, "** not a directory %s\n", f);
exit(1);
}
sprintf(f, "%s/.vnc/passwd", h);
}
fprintf(stderr, "Write password to %s? [y]/n ", f);
if (fgets(str2, 32, stdin) == NULL) {
exit(1);
}
if (str2[0] == 'n' || str2[0] == 'N') {
fprintf(stderr, "not creating password.\n");
exit(1);
}
if (rfbEncryptAndStorePasswd(str1, f) != 0) {
fprintf(stderr, "** error creating password.\n");
perror("storepasswd");
exit(1);
}
fprintf(stderr, "Password written to: %s\n", f);
if (stat(f, &sbuf) != 0) {
exit(1);
}
exit(0);
}
#define SHOW_NO_PASSWORD_WARNING \
(!got_passwd && !got_rfbauth && (!got_passwdfile || !passwd_list) \
&& !query_cmd && !remote_cmd && !unixpw && !got_gui_pw \
&& ! ssl_verify)
int main(int argc, char* argv[]) {
int i, len, tmpi;
int ev, er, maj, min;
char *arg;
int remote_sync = 0;
char *remote_cmd = NULL;
char *query_cmd = NULL;
char *gui_str = NULL;
int got_gui_pw = 0;
int pw_loc = -1, got_passwd = 0, got_rfbauth = 0, nopw = NOPW;
int got_viewpasswd = 0, got_localhost = 0, got_passwdfile = 0;
int vpw_loc = -1;
int dt = 0, bg = 0;
int got_rfbwait = 0;
int got_httpdir = 0, try_http = 0;
/* used to pass args we do not know about to rfbGetScreen(): */
int argc_vnc = 1; char *argv_vnc[128];
/* check for -loop mode: */
check_loop_mode(argc, argv);
dtime0(&x11vnc_start);
if (!getuid() || !geteuid()) {
started_as_root = 1;
/* check for '-users =bob' */
immediate_switch_user(argc, argv);
}
argv_vnc[0] = strdup(argv[0]);
program_name = strdup(argv[0]);
program_pid = (int) getpid();
solid_default = strdup(solid_default); /* for freeing with -R */
len = 0;
for (i=1; i < argc; i++) {
len += strlen(argv[i]) + 4 + 1;
}
program_cmdline = (char *) malloc(len+1);
program_cmdline[0] = '\0';
for (i=1; i < argc; i++) {
char *s = argv[i];
if (program_cmdline[0]) {
strcat(program_cmdline, " ");
}
if (*s == '-') {
strcat(program_cmdline, s);
} else {
strcat(program_cmdline, "{{");
strcat(program_cmdline, s);
strcat(program_cmdline, "}}");
}
}
for (i=0; i<ICON_MODE_SOCKS; i++) {
icon_mode_socks[i] = -1;
}
check_rcfile(argc, argv);
/* kludge for the new array argv2 set in check_rcfile() */
# define argc argc2
# define argv argv2
# define CHECK_ARGC if (i >= argc-1) { \
fprintf(stderr, "not enough arguments for: %s\n", arg); \
exit(1); \
}
/*
* do a quick check for parameters that apply to "utility"
* commands, i.e. ones that do not run the server.
*/
for (i=1; i < argc; i++) {
arg = argv[i];
if (strstr(arg, "--") == arg) {
arg++;
}
if (!strcmp(arg, "-ssldir")) {
CHECK_ARGC
ssl_certs_dir = strdup(argv[++i]);
}
}
for (i=1; i < argc; i++) {
/* quick-n-dirty --option handling. */
arg = argv[i];
if (strstr(arg, "--") == arg) {
arg++;
}
if (!strcmp(arg, "-display")) {
CHECK_ARGC
use_dpy = strdup(argv[++i]);
} else if (!strcmp(arg, "-auth") || !strcmp(arg, "-xauth")) {
CHECK_ARGC
auth_file = strdup(argv[++i]);
} else if (!strcmp(arg, "-id") || !strcmp(arg, "-sid")) {
CHECK_ARGC
if (!strcmp(arg, "-sid")) {
rootshift = 1;
} else {
rootshift = 0;
}
i++;
if (!strcmp("pick", argv[i])) {
if (started_as_root) {
fprintf(stderr, "unsafe: %s pick\n",
arg);
exit(1);
} else if (! pick_windowid(&subwin)) {
fprintf(stderr, "invalid %s pick\n",
arg);
exit(1);
}
} else if (! scan_hexdec(argv[i], &subwin)) {
fprintf(stderr, "invalid %s arg: %s\n", arg,
argv[i]);
exit(1);
}
} else if (!strcmp(arg, "-waitmapped")) {
subwin_wait_mapped = 1;
} else if (!strcmp(arg, "-clip")) {
CHECK_ARGC
clip_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-flashcmap")) {
flash_cmap = 1;
} else if (!strcmp(arg, "-shiftcmap")) {
CHECK_ARGC
shift_cmap = atoi(argv[++i]);
} else if (!strcmp(arg, "-notruecolor")) {
force_indexed_color = 1;
} else if (!strcmp(arg, "-overlay")) {
overlay = 1;
} else if (!strcmp(arg, "-overlay_nocursor")) {
overlay = 1;
overlay_cursor = 0;
} else if (!strcmp(arg, "-overlay_yescursor")) {
overlay = 1;
overlay_cursor = 2;
#if !SKIP_8TO24
} else if (!strcmp(arg, "-8to24")) {
cmap8to24 = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
cmap8to24_str = strdup(s);
i++;
}
}
#endif
} else if (!strcmp(arg, "-visual")) {
CHECK_ARGC
visual_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scale")) {
CHECK_ARGC
scale_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scale_cursor")) {
CHECK_ARGC
scale_cursor_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-viewonly")) {
view_only = 1;
} else if (!strcmp(arg, "-noviewonly")) {
view_only = 0;
got_noviewonly = 1;
} else if (!strcmp(arg, "-shared")) {
shared = 1;
} else if (!strcmp(arg, "-once")) {
connect_once = 1;
got_connect_once = 1;
} else if (!strcmp(arg, "-many") || !strcmp(arg, "-forever")) {
connect_once = 0;
} else if (strstr(arg, "-loop") == arg) {
; /* handled above */
} else if (!strcmp(arg, "-timeout")) {
CHECK_ARGC
first_conn_timeout = atoi(argv[++i]);
} else if (!strcmp(arg, "-users")) {
CHECK_ARGC
users_list = strdup(argv[++i]);
} else if (!strcmp(arg, "-inetd")) {
inetd = 1;
} else if (!strcmp(arg, "-nofilexfer")) {
filexfer = 0;
} else if (!strcmp(arg, "-filexfer")) {
filexfer = 1;
} else if (!strcmp(arg, "-http")) {
try_http = 1;
} else if (!strcmp(arg, "-connect")) {
CHECK_ARGC
if (strchr(argv[++i], '/')) {
client_connect_file = strdup(argv[i]);
} else {
client_connect = strdup(argv[i]);
}
} else if (!strcmp(arg, "-vncconnect")) {
vnc_connect = 1;
} else if (!strcmp(arg, "-novncconnect")) {
vnc_connect = 0;
} else if (!strcmp(arg, "-allow")) {
CHECK_ARGC
allow_list = strdup(argv[++i]);
} else if (!strcmp(arg, "-localhost")) {
allow_list = strdup("127.0.0.1");
got_localhost = 1;
} else if (!strcmp(arg, "-nolookup")) {
host_lookup = 0;
} else if (!strcmp(arg, "-input")) {
CHECK_ARGC
allowed_input_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-viewpasswd")) {
vpw_loc = i;
CHECK_ARGC
viewonly_passwd = strdup(argv[++i]);
got_viewpasswd = 1;
} else if (!strcmp(arg, "-passwdfile")) {
CHECK_ARGC
passwdfile = strdup(argv[++i]);
got_passwdfile = 1;
} else if (strstr(arg, "-unixpw") == arg) {
unixpw = 1;
if (strstr(arg, "-unixpw_nis")) {
unixpw_nis = 1;
}
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
unixpw_list = strdup(s);
i++;
}
if (s[0] == '%') {
unixpw_list = NULL;
quick_pw(s);
exit(1);
}
}
if (strstr(arg, "_unsafe")) {
/* hidden option for testing. */
set_env("UNIXPW_DISABLE_SSL", "1");
set_env("UNIXPW_DISABLE_LOCALHOST", "1");
}
} else if (!strcmp(arg, "-ssl")) {
use_openssl = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
openssl_pem = strdup(s);
i++;
}
}
} else if (!strcmp(arg, "-ssldir")) {
CHECK_ARGC
ssl_certs_dir = strdup(argv[++i]);
} else if (!strcmp(arg, "-sslverify")) {
CHECK_ARGC
ssl_verify = strdup(argv[++i]);
} else if (!strcmp(arg, "-sslGenCA")) {
char *cdir = NULL;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
cdir = strdup(s);
i++;
}
}
sslGenCA(cdir);
exit(0);
} else if (!strcmp(arg, "-sslGenCert")) {
char *ty, *nm = NULL;
if (i >= argc-1) {
fprintf(stderr, "Must be:\n");
fprintf(stderr, " x11vnc -sslGenCert server ...\n");
fprintf(stderr, "or x11vnc -sslGenCert client ...\n");
exit(1);
}
ty = argv[i+1];
if (strcmp(ty, "server") && strcmp(ty, "client")) {
fprintf(stderr, "Must be:\n");
fprintf(stderr, " x11vnc -sslGenCert server ...\n");
fprintf(stderr, "or x11vnc -sslGenCert client ...\n");
exit(1);
}
if (i < argc-2) {
nm = argv[i+2];
}
sslGenCert(ty, nm);
exit(0);
} else if (!strcmp(arg, "-sslEncKey")) {
if (i < argc-1) {
char *s = argv[i+1];
sslEncKey(s, 0);
}
exit(0);
} else if (!strcmp(arg, "-sslCertInfo")) {
if (i < argc-1) {
char *s = argv[i+1];
sslEncKey(s, 1);
}
exit(0);
} else if (!strcmp(arg, "-sslDelCert")) {
if (i < argc-1) {
char *s = argv[i+1];
sslEncKey(s, 2);
}
exit(0);
} else if (!strcmp(arg, "-stunnel")) {
use_stunnel = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
stunnel_pem = strdup(s);
i++;
}
}
} else if (!strcmp(arg, "-stunnel3")) {
use_stunnel = 3;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
stunnel_pem = strdup(s);
i++;
}
}
} else if (!strcmp(arg, "-https")) {
https_port_num = 0;
try_http = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
https_port_num = atoi(s);
i++;
}
}
} else if (!strcmp(arg, "-nopw")) {
nopw = 1;
} else if (!strcmp(arg, "-usepw")) {
usepw = 1;
} else if (!strcmp(arg, "-storepasswd")) {
if (argc == i+1) {
store_homedir_passwd(NULL);
exit(0);
}
if (argc == i+2) {
store_homedir_passwd(argv[i+1]);
exit(0);
}
if (argc >= i+4 || rfbEncryptAndStorePasswd(argv[i+1],
argv[i+2]) != 0) {
fprintf(stderr, "-storepasswd failed\n");
exit(1);
} else {
fprintf(stderr, "stored passwd in file %s\n",
argv[i+2]);
exit(0);
}
} else if (!strcmp(arg, "-accept")) {
CHECK_ARGC
accept_cmd = strdup(argv[++i]);
} else if (!strcmp(arg, "-afteraccept")) {
CHECK_ARGC
afteraccept_cmd = strdup(argv[++i]);
} else if (!strcmp(arg, "-gone")) {
CHECK_ARGC
gone_cmd = strdup(argv[++i]);
} else if (!strcmp(arg, "-noshm")) {
using_shm = 0;
} else if (!strcmp(arg, "-flipbyteorder")) {
flip_byte_order = 1;
} else if (!strcmp(arg, "-onetile")) {
single_copytile = 1;
} else if (!strcmp(arg, "-solid")) {
use_solid_bg = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (s[0] != '-') {
solid_str = strdup(s);
i++;
}
}
if (! solid_str) {
solid_str = strdup(solid_default);
}
} else if (!strcmp(arg, "-blackout")) {
CHECK_ARGC
blackout_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-xinerama")) {
xinerama = 1;
} else if (!strcmp(arg, "-xtrap")) {
xtrap_input = 1;
} else if (!strcmp(arg, "-xrandr")) {
xrandr = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (known_xrandr_mode(s)) {
xrandr_mode = strdup(s);
i++;
}
}
} else if (!strcmp(arg, "-padgeom")
|| !strcmp(arg, "-padgeometry")) {
CHECK_ARGC
pad_geometry = strdup(argv[++i]);
} else if (!strcmp(arg, "-o") || !strcmp(arg, "-logfile")) {
CHECK_ARGC
logfile_append = 0;
logfile = strdup(argv[++i]);
} else if (!strcmp(arg, "-oa") || !strcmp(arg, "-logappend")) {
CHECK_ARGC
logfile_append = 1;
logfile = strdup(argv[++i]);
} else if (!strcmp(arg, "-flag")) {
CHECK_ARGC
flagfile = strdup(argv[++i]);
} else if (!strcmp(arg, "-rc")) {
i++; /* done above */
} else if (!strcmp(arg, "-norc")) {
; /* done above */
} else if (!strcmp(arg, "-h") || !strcmp(arg, "-help")) {
print_help(0);
} else if (!strcmp(arg, "-?") || !strcmp(arg, "-opts")) {
print_help(1);
} else if (!strcmp(arg, "-V") || !strcmp(arg, "-version")) {
fprintf(stdout, "x11vnc: %s\n", lastmod);
exit(0);
} else if (!strcmp(arg, "-dbg")) {
crash_debug = 1;
} else if (!strcmp(arg, "-nodbg")) {
crash_debug = 0;
} else if (!strcmp(arg, "-q") || !strcmp(arg, "-quiet")) {
quiet = 1;
} else if (!strcmp(arg, "-bg") || !strcmp(arg, "-background")) {
#if LIBVNCSERVER_HAVE_SETSID
bg = 1;
opts_bg = bg;
#else
fprintf(stderr, "warning: -bg mode not supported.\n");
#endif
} else if (!strcmp(arg, "-modtweak")) {
use_modifier_tweak = 1;
} else if (!strcmp(arg, "-nomodtweak")) {
use_modifier_tweak = 0;
got_nomodtweak = 1;
} else if (!strcmp(arg, "-isolevel3")) {
use_iso_level3 = 1;
} else if (!strcmp(arg, "-xkb")) {
use_modifier_tweak = 1;
use_xkb_modtweak = 1;
} else if (!strcmp(arg, "-noxkb")) {
use_xkb_modtweak = 0;
got_noxkb = 1;
} else if (!strcmp(arg, "-xkbcompat")) {
xkbcompat = 1;
} else if (!strcmp(arg, "-skip_keycodes")) {
CHECK_ARGC
skip_keycodes = strdup(argv[++i]);
} else if (!strcmp(arg, "-sloppy_keys")) {
sloppy_keys++;
} else if (!strcmp(arg, "-skip_dups")) {
skip_duplicate_key_events = 1;
} else if (!strcmp(arg, "-noskip_dups")) {
skip_duplicate_key_events = 0;
} else if (!strcmp(arg, "-add_keysyms")) {
add_keysyms++;
} else if (!strcmp(arg, "-noadd_keysyms")) {
add_keysyms = 0;
} else if (!strcmp(arg, "-clear_mods")) {
clear_mods = 1;
} else if (!strcmp(arg, "-clear_keys")) {
clear_mods = 2;
} else if (!strcmp(arg, "-remap")) {
CHECK_ARGC
remap_file = strdup(argv[++i]);
} else if (!strcmp(arg, "-norepeat")) {
no_autorepeat = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (*s == '-') {
s++;
}
if (isdigit(*s)) {
no_repeat_countdown = atoi(argv[++i]);
}
}
} else if (!strcmp(arg, "-repeat")) {
no_autorepeat = 0;
} else if (!strcmp(arg, "-nofb")) {
nofb = 1;
} else if (!strcmp(arg, "-nobell")) {
watch_bell = 0;
sound_bell = 0;
} else if (!strcmp(arg, "-nosel")) {
watch_selection = 0;
watch_primary = 0;
watch_clipboard = 0;
} else if (!strcmp(arg, "-noprimary")) {
watch_primary = 0;
} else if (!strcmp(arg, "-nosetprimary")) {
set_primary = 0;
} else if (!strcmp(arg, "-noclipboard")) {
watch_clipboard = 0;
} else if (!strcmp(arg, "-nosetclipboard")) {
set_clipboard = 0;
} else if (!strcmp(arg, "-seldir")) {
CHECK_ARGC
sel_direction = strdup(argv[++i]);
} else if (!strcmp(arg, "-cursor")) {
show_cursor = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (known_cursors_mode(s)) {
multiple_cursors_mode = strdup(s);
i++;
if (!strcmp(s, "none")) {
show_cursor = 0;
}
}
}
} else if (!strcmp(arg, "-nocursor")) {
multiple_cursors_mode = strdup("none");
show_cursor = 0;
} else if (!strcmp(arg, "-arrow")) {
CHECK_ARGC
alt_arrow = atoi(argv[++i]);
} else if (!strcmp(arg, "-xfixes")) {
use_xfixes = 1;
} else if (!strcmp(arg, "-noxfixes")) {
use_xfixes = 0;
} else if (!strcmp(arg, "-alphacut")) {
CHECK_ARGC
alpha_threshold = atoi(argv[++i]);
} else if (!strcmp(arg, "-alphafrac")) {
CHECK_ARGC
alpha_frac = atof(argv[++i]);
} else if (!strcmp(arg, "-alpharemove")) {
alpha_remove = 1;
} else if (!strcmp(arg, "-noalphablend")) {
alpha_blend = 0;
} else if (!strcmp(arg, "-nocursorshape")) {
cursor_shape_updates = 0;
} else if (!strcmp(arg, "-cursorpos")) {
cursor_pos_updates = 1;
got_cursorpos = 1;
} else if (!strcmp(arg, "-nocursorpos")) {
cursor_pos_updates = 0;
} else if (!strcmp(arg, "-xwarppointer")) {
use_xwarppointer = 1;
} else if (!strcmp(arg, "-buttonmap")) {
CHECK_ARGC
pointer_remap = strdup(argv[++i]);
} else if (!strcmp(arg, "-nodragging")) {
show_dragging = 0;
} else if (!strcmp(arg, "-wireframe")
|| !strcmp(arg, "-wf")) {
wireframe = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (*s != '-') {
wireframe_str = strdup(argv[++i]);
}
}
} else if (!strcmp(arg, "-nowireframe")
|| !strcmp(arg, "-nowf")) {
wireframe = 0;
} else if (!strcmp(arg, "-wirecopyrect")
|| !strcmp(arg, "-wcr")) {
CHECK_ARGC
set_wirecopyrect_mode(argv[++i]);
got_wirecopyrect = 1;
} else if (!strcmp(arg, "-nowirecopyrect")
|| !strcmp(arg, "-nowcr")) {
set_wirecopyrect_mode("never");
} else if (!strcmp(arg, "-debug_wireframe")
|| !strcmp(arg, "-dwf")) {
debug_wireframe++;
} else if (!strcmp(arg, "-scrollcopyrect")
|| !strcmp(arg, "-scr")) {
CHECK_ARGC
set_scrollcopyrect_mode(argv[++i]);
got_scrollcopyrect = 1;
} else if (!strcmp(arg, "-noscrollcopyrect")
|| !strcmp(arg, "-noscr")) {
set_scrollcopyrect_mode("never");
} else if (!strcmp(arg, "-scr_area")) {
int tn;
CHECK_ARGC
tn = atoi(argv[++i]);
if (tn >= 0) {
scrollcopyrect_min_area = tn;
}
} else if (!strcmp(arg, "-scr_skip")) {
CHECK_ARGC
scroll_skip_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scr_inc")) {
CHECK_ARGC
scroll_good_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scr_keys")) {
CHECK_ARGC
scroll_key_list_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scr_term")) {
CHECK_ARGC
scroll_term_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scr_keyrepeat")) {
CHECK_ARGC
max_keyrepeat_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-scr_parms")) {
CHECK_ARGC
scroll_copyrect_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-fixscreen")) {
CHECK_ARGC
screen_fixup_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-debug_scroll")
|| !strcmp(arg, "-ds")) {
debug_scroll++;
} else if (!strcmp(arg, "-noxrecord")) {
noxrecord = 1;
} else if (!strcmp(arg, "-pointer_mode")
|| !strcmp(arg, "-pm")) {
char *p, *s;
CHECK_ARGC
s = argv[++i];
if ((p = strchr(s, ':')) != NULL) {
ui_skip = atoi(p+1);
if (! ui_skip) ui_skip = 1;
*p = '\0';
}
if (atoi(s) < 1 || atoi(s) > pointer_mode_max) {
rfbLog("pointer_mode out of range 1-%d: %d\n",
pointer_mode_max, atoi(s));
} else {
pointer_mode = atoi(s);
got_pointer_mode = pointer_mode;
}
} else if (!strcmp(arg, "-input_skip")) {
CHECK_ARGC
ui_skip = atoi(argv[++i]);
if (! ui_skip) ui_skip = 1;
} else if (!strcmp(arg, "-speeds")) {
CHECK_ARGC
speeds_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-wmdt")) {
CHECK_ARGC
wmdt_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-debug_pointer")
|| !strcmp(arg, "-dp")) {
debug_pointer++;
} else if (!strcmp(arg, "-debug_keyboard")
|| !strcmp(arg, "-dk")) {
debug_keyboard++;
} else if (!strcmp(arg, "-defer")) {
CHECK_ARGC
defer_update = atoi(argv[++i]);
got_defer = 1;
} else if (!strcmp(arg, "-wait")) {
CHECK_ARGC
waitms = atoi(argv[++i]);
} else if (!strcmp(arg, "-wait_ui")) {
CHECK_ARGC
wait_ui = atof(argv[++i]);
} else if (!strcmp(arg, "-nowait_bog")) {
wait_bog = 0;
} else if (!strcmp(arg, "-slow_fb")) {
CHECK_ARGC
slow_fb = atof(argv[++i]);
} else if (!strcmp(arg, "-readtimeout")) {
CHECK_ARGC
rfbMaxClientWait = atoi(argv[++i]) * 1000;
} else if (!strcmp(arg, "-nap")) {
take_naps = 1;
} else if (!strcmp(arg, "-nonap")) {
take_naps = 0;
} else if (!strcmp(arg, "-sb")) {
CHECK_ARGC
screen_blank = atoi(argv[++i]);
} else if (!strcmp(arg, "-nofbpm")) {
watch_fbpm = 1;
} else if (!strcmp(arg, "-fbpm")) {
watch_fbpm = 0;
} else if (!strcmp(arg, "-xdamage")) {
use_xdamage = 1;
} else if (!strcmp(arg, "-noxdamage")) {
use_xdamage = 0;
} else if (!strcmp(arg, "-xd_area")) {
int tn;
CHECK_ARGC
tn = atoi(argv[++i]);
if (tn >= 0) {
xdamage_max_area = tn;
}
} else if (!strcmp(arg, "-xd_mem")) {
double f;
CHECK_ARGC
f = atof(argv[++i]);
if (f >= 0.0) {
xdamage_memory = f;
}
} else if (!strcmp(arg, "-sigpipe")) {
CHECK_ARGC
if (known_sigpipe_mode(argv[++i])) {
sigpipe = strdup(argv[i]);
} else {
fprintf(stderr, "invalid -sigpipe arg: %s, must"
" be \"ignore\" or \"exit\"\n", argv[i]);
exit(1);
}
#if LIBVNCSERVER_HAVE_LIBPTHREAD
} else if (!strcmp(arg, "-threads")) {
use_threads = 1;
} else if (!strcmp(arg, "-nothreads")) {
use_threads = 0;
#endif
} else if (!strcmp(arg, "-fs")) {
CHECK_ARGC
fs_frac = atof(argv[++i]);
} else if (!strcmp(arg, "-gaps")) {
CHECK_ARGC
gaps_fill = atoi(argv[++i]);
} else if (!strcmp(arg, "-grow")) {
CHECK_ARGC
grow_fill = atoi(argv[++i]);
} else if (!strcmp(arg, "-fuzz")) {
CHECK_ARGC
tile_fuzz = atoi(argv[++i]);
} else if (!strcmp(arg, "-debug_tiles")
|| !strcmp(arg, "-dbt")) {
debug_tiles++;
} else if (!strcmp(arg, "-debug_grabs")) {
debug_grabs++;
} else if (!strcmp(arg, "-debug_sel")) {
debug_sel++;
} else if (!strcmp(arg, "-grab_buster")) {
grab_buster++;
} else if (!strcmp(arg, "-nograb_buster")) {
grab_buster = 0;
} else if (!strcmp(arg, "-snapfb")) {
use_snapfb = 1;
} else if (!strcmp(arg, "-rawfb")) {
CHECK_ARGC
raw_fb_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-pipeinput")) {
CHECK_ARGC
pipeinput_str = strdup(argv[++i]);
} else if (!strcmp(arg, "-gui")) {
launch_gui = 1;
if (i < argc-1) {
char *s = argv[i+1];
if (*s != '-') {
gui_str = strdup(s);
if (strstr(gui_str, "setp")) {
got_gui_pw = 1;
}
i++;
}
}
} else if (!strcmp(arg, "-remote") || !strcmp(arg, "-R")
|| !strcmp(arg, "-r") || !strcmp(arg, "-remote-control")) {
char *str;
CHECK_ARGC
i++;
str = argv[i];
if (*str == '-') {
/* accidental leading '-' */
str++;
}
if (!strcmp(str, "ping")) {
query_cmd = strdup(str);
} else {
remote_cmd = strdup(str);
}
if (remote_cmd && strchr(remote_cmd, ':') == NULL) {
/* interpret -R -scale 3/4 at least */
if (i < argc-1 && *(argv[i+1]) != '-') {
int n;
/* it must be the parameter value */
i++;
n = strlen(remote_cmd) + strlen(argv[i]) + 2;
str = (char *) malloc(n);
sprintf(str, "%s:%s", remote_cmd, argv[i]);
free(remote_cmd);
remote_cmd = str;
}
}
quiet = 1;
xkbcompat = 0;
} else if (!strcmp(arg, "-query") || !strcmp(arg, "-Q")) {
CHECK_ARGC
query_cmd = strdup(argv[++i]);
quiet = 1;
xkbcompat = 0;
} else if (!strcmp(arg, "-QD")) {
CHECK_ARGC
query_cmd = strdup(argv[++i]);
query_default = 1;
} else if (!strcmp(arg, "-sync")) {
remote_sync = 1;
} else if (!strcmp(arg, "-nosync")) {
remote_sync = 0;
} else if (!strcmp(arg, "-noremote")) {
accept_remote_cmds = 0;
} else if (!strcmp(arg, "-yesremote")) {
accept_remote_cmds = 1;
} else if (!strcmp(arg, "-unsafe")) {
safe_remote_only = 0;
} else if (!strcmp(arg, "-privremote")) {
priv_remote = 1;
} else if (!strcmp(arg, "-safer")) {
more_safe = 1;
} else if (!strcmp(arg, "-nocmds")) {
no_external_cmds = 1;
} else if (!strcmp(arg, "-deny_all")) {
deny_all = 1;
} else if (!strcmp(arg, "-httpdir")) {
CHECK_ARGC
http_dir = strdup(argv[++i]);
got_httpdir = 1;
} else {
if (!strcmp(arg, "-desktop") && i < argc-1) {
dt = 1;
rfb_desktop_name = strdup(argv[i+1]);
}
if (!strcmp(arg, "-passwd")) {
pw_loc = i;
got_passwd = 1;
}
if (!strcmp(arg, "-rfbauth")) {
got_rfbauth = 1;
}
if (!strcmp(arg, "-rfbwait")) {
got_rfbwait = 1;
}
if (!strcmp(arg, "-deferupdate")) {
got_deferupdate = 1;
}
if (!strcmp(arg, "-rfbport") && i < argc-1) {
got_rfbport = atoi(argv[i+1]);
}
if (!strcmp(arg, "-alwaysshared ")) {
got_alwaysshared = 1;
}
if (!strcmp(arg, "-nevershared")) {
got_nevershared = 1;
}
if (!strcmp(arg, "-listen") && i < argc-1) {
listen_str = strdup(argv[i+1]);
}
/* otherwise copy it for libvncserver use below. */
if (argc_vnc < 100) {
argv_vnc[argc_vnc++] = strdup(arg);
}
}
}
if (getenv("X11VNC_LOOP_MODE")) {
if (bg) {
if (! quiet) {
fprintf(stderr, "disabling -bg in -loop "
"mode\n");
}
bg = 0;
}
if (inetd) {
if (! quiet) {
fprintf(stderr, "disabling -inetd in -loop "
"mode\n");
}
inetd = 0;
}
}
if (launch_gui && (query_cmd || remote_cmd)) {
launch_gui = 0;
gui_str = NULL;
}
if (more_safe) {
launch_gui = 0;
}
if (launch_gui) {
int sleep = 0;
if (SHOW_NO_PASSWORD_WARNING && !nopw) {
sleep = 2;
}
do_gui(gui_str, sleep);
}
if (logfile) {
int n;
if (logfile_append) {
n = open(logfile, O_WRONLY|O_CREAT|O_APPEND, 0666);
} else {
n = open(logfile, O_WRONLY|O_CREAT|O_TRUNC, 0666);
}
if (n < 0) {
fprintf(stderr, "error opening logfile: %s\n", logfile);
perror("open");
exit(1);
}
if (dup2(n, 2) < 0) {
fprintf(stderr, "dup2 failed\n");
perror("dup2");
exit(1);
}
if (n > 2) {
close(n);
}
}
if (inetd && quiet && !logfile) {
int n;
/*
* Redir stderr to /dev/null under -inetd and -quiet
* but no -o logfile. Typical problem:
* Xlib: extension "RECORD" missing on display ":1.0".
* If they want this info, they should use -o logfile,
* or no -q and 2>logfile.
*/
n = open("/dev/null", O_WRONLY);
if (n >= 0) {
if (dup2(n, 2) >= 0) {
if (n > 2) {
close(n);
}
}
}
}
if (! quiet && ! inetd) {
int i;
for (i=1; i < argc_vnc; i++) {
rfbLog("passing arg to libvncserver: %s\n", argv_vnc[i]);
if (!strcmp(argv_vnc[i], "-passwd")) {
i++;
}
}
}
if (remote_cmd || query_cmd) {
/*
* no need to open DISPLAY, just write it to the file now
* similar for query_default.
*/
if (client_connect_file || query_default) {
int rc = do_remote_query(remote_cmd, query_cmd,
remote_sync, query_default);
fflush(stderr);
fflush(stdout);
exit(rc);
}
}
if (usepw && ! got_rfbauth && ! got_passwd && ! got_passwdfile) {
char *f, *h = getenv("HOME");
struct stat sbuf;
int found = 0, set_rfbauth = 0;
if (!h) {
rfbLog("HOME unset in -usepw mode.\n");
exit(1);
}
f = (char *) malloc(strlen(h)+strlen("/.vnc/passwdfile") + 1);
sprintf(f, "%s/.vnc/passwd", h);
if (stat(f, &sbuf) == 0) {
found = 1;
if (! quiet) {
rfbLog("-usepw: found %s\n", f);
}
got_rfbauth = 1;
set_rfbauth = 1;
}
sprintf(f, "%s/.vnc/passwdfile", h);
if (! found && stat(f, &sbuf) == 0) {
found = 1;
if (! quiet) {
rfbLog("-usepw: found %s\n", f);
}
got_passwdfile = 1;
passwdfile = strdup(f);
}
#if LIBVNCSERVER_HAVE_FORK
#if LIBVNCSERVER_HAVE_SYS_WAIT_H
#if LIBVNCSERVER_HAVE_WAITPID
if (! found) {
pid_t pid = fork();
if (pid < 0) {
;
} else if (pid == 0) {
execlp(argv[0], argv[0], "-storepasswd",
(char *) NULL);
exit(1);
} else {
int s;
waitpid(pid, &s, 0);
if (WIFEXITED(s) && WEXITSTATUS(s) == 0) {
got_rfbauth = 1;
set_rfbauth = 1;
found = 1;
}
}
}
#endif
#endif
#endif
if (set_rfbauth) {
sprintf(f, "%s/.vnc/passwd", h);
if (argc_vnc < 100) {
argv_vnc[argc_vnc++] = strdup("-rfbauth");
} else {
exit(1);
}
if (argc_vnc < 100) {
argv_vnc[argc_vnc++] = strdup(f);
} else {
exit(1);
}
}
if (! found) {
fprintf(stderr, "x11vnc -usepw: could not find"
" a password to use.\n");
exit(1);
}
free(f);
}
if (got_rfbauth && (got_passwd || got_viewpasswd || got_passwdfile)) {
fprintf(stderr, "option -rfbauth is incompatible with:\n");
fprintf(stderr, " -passwd, -viewpasswd, and -passwdfile\n");
exit(1);
}
if (got_passwdfile && (got_passwd || got_viewpasswd)) {
fprintf(stderr, "option -passwdfile is incompatible with:\n");
fprintf(stderr, " -passwd and -viewpasswd\n");
exit(1);
}
/*
* If -passwd was used, clear it out of argv. This does not
* work on all UNIX, have to use execvp() in general...
*/
if (pw_loc > 0) {
int i;
for (i=pw_loc; i <= pw_loc+1; i++) {
if (i < argc) {
char *p = argv[i];
strzero(p);
}
}
} else if (passwdfile) {
/* read passwd(s) from file */
if (read_passwds(passwdfile)) {
argv_vnc[argc_vnc++] = strdup("-passwd");
argv_vnc[argc_vnc++] = strdup(passwd_list[0]);
got_passwd = 1;
pw_loc = 100; /* just for pw_loc check below */
}
}
if (vpw_loc > 0) {
int i;
for (i=vpw_loc; i <= vpw_loc+1; i++) {
if (i < argc) {
char *p = argv[i];
strzero(p);
}
}
}
#ifdef HARDWIRE_PASSWD
if (!got_rfbauth && !got_passwd) {
argv_vnc[argc_vnc++] = strdup("-passwd");
argv_vnc[argc_vnc++] = strdup(HARDWIRE_PASSWD);
got_passwd = 1;
pw_loc = 100;
}
#endif
#ifdef HARDWIRE_VIEWPASSWD
if (!got_rfbauth && got_passwd && !viewonly_passwd && !passwd_list) {
viewonly_passwd = strdup(HARDWIRE_VIEWPASSWD);
}
#endif
if (viewonly_passwd && pw_loc < 0) {
rfbLog("-passwd must be supplied when using -viewpasswd\n");
exit(1);
}
if (SHOW_NO_PASSWORD_WARNING) {
char message[] = "-rfbauth, -passwdfile, -passwd password, "
"or -unixpw required.";
if (! nopw) {
nopassword_warning_msg(got_localhost);
}
#if PASSWD_REQUIRED
rfbLog("%s\n", message);
exit(1);
#endif
#if PASSWD_UNLESS_NOPW
if (! nopw) {
rfbLog("%s\n", message);
exit(1);
}
#endif
message[0] = '\0'; /* avoid compiler warning */
}
if (more_safe) {
if (! quiet) {
rfbLog("-safer mode:\n");
rfbLog(" vnc_connect=0\n");
rfbLog(" accept_remote_cmds=0\n");
rfbLog(" safe_remote_only=1\n");
rfbLog(" launch_gui=0\n");
}
vnc_connect = 0;
accept_remote_cmds = 0;
safe_remote_only = 1;
launch_gui = 0;
}
if (unixpw) {
if (inetd) {
use_stunnel = 0;
}
if (! use_stunnel && ! use_openssl) {
if (have_ssh_env()) {
char *s = getenv("SSH_CONNECTION");
if (! s) s = getenv("SSH_CLIENT");
if (! s) s = "SSH_CONNECTION";
fprintf(stderr, "\n");
rfbLog("Skipping -ssl/-stunnel contraint in"
" -unixpw\n");
rfbLog("mode, assuming your SSH encryption"
" is: %s\n", s);
fprintf(stderr, "\n");
if (! nopw) {
usleep(2000*1000);
}
} else if (getenv("UNIXPW_DISABLE_SSL")) {
rfbLog("Skipping -ssl/-stunnel requirement"
" due to\n");
rfbLog("UNIXPW_DISABLE_SSL setting.\n");
} else {
if (openssl_present()) {
rfbLog("set -ssl in -unixpw mode.\n");
use_openssl = 1;
} else if (inetd) {
rfbLog("could not set -ssl in -inetd + -unixpw mode.\n");
exit(1);
} else {
rfbLog("set -stunnel in -unixpw mode.\n");
use_stunnel = 1;
}
}
}
}
if (use_stunnel && ! got_localhost) {
if (! getenv("STUNNEL_DISABLE_LOCALHOST") &&
! getenv("UNIXPW_DISABLE_LOCALHOST")) {
if (! quiet) {
rfbLog("Setting -localhost in -stunnel mode.\n");
}
allow_list = strdup("127.0.0.1");
got_localhost = 1;
}
}
if (ssl_verify && ! use_stunnel && ! use_openssl) {
rfbLog("-sslverify must be used with -ssl or -stunnel\n");
exit(1);
}
if (https_port_num >= 0 && ! use_openssl) {
rfbLog("-https must be used with -ssl\n");
exit(1);
}
/* fixup settings that do not make sense */
if (use_threads && nofb && cursor_pos_updates) {
if (! quiet) {
rfbLog("disabling -threads under -nofb -cursorpos\n");
}
use_threads = 0;
}
if (tile_fuzz < 1) {
tile_fuzz = 1;
}
if (waitms < 0) {
waitms = 0;
}
if (alpha_threshold < 0) {
alpha_threshold = 0;
}
if (alpha_threshold > 256) {
alpha_threshold = 256;
}
if (alpha_frac < 0.0) {
alpha_frac = 0.0;
}
if (alpha_frac > 1.0) {
alpha_frac = 1.0;
}
if (alpha_blend) {
alpha_remove = 0;
}
if (cmap8to24 && overlay) {
if (! quiet) {
rfbLog("disabling -overlay in -8to24 mode.\n");
}
overlay = 0;
}
if (filexfer && view_only) {
if (! quiet) {
rfbLog("setting -nofilexfer in -viewonly mode.\n");
}
/* how to undo via -R? */
filexfer = 0;
}
if (inetd) {
shared = 0;
connect_once = 1;
bg = 0;
if (use_stunnel) {
exit(1);
}
/* others? */
}
if (flip_byte_order && using_shm && ! quiet) {
rfbLog("warning: -flipbyte order only works with -noshm\n");
}
if (! wireframe_copyrect) {
set_wirecopyrect_mode(NULL);
}
if (! scroll_copyrect) {
set_scrollcopyrect_mode(NULL);
}
if (screen_fixup_str) {
parse_fixscreen();
}
initialize_scroll_matches();
initialize_scroll_term();
initialize_max_keyrepeat();
/* increase rfbwait if threaded */
if (use_threads && ! got_rfbwait) {
rfbMaxClientWait = 604800000;
}
/* no framebuffer (Win2VNC) mode */
if (nofb) {
/* disable things that do not make sense with no fb */
set_nofb_params(0);
if (! got_deferupdate && ! got_defer) {
/* reduce defer time under -nofb */
defer_update = defer_update_nofb;
}
if (got_pointer_mode < 0) {
pointer_mode = POINTER_MODE_NOFB;
}
}
if (raw_fb_str) {
set_raw_fb_params(0);
}
if (! got_deferupdate) {
char tmp[40];
sprintf(tmp, "%d", defer_update);
argv_vnc[argc_vnc++] = strdup("-deferupdate");
argv_vnc[argc_vnc++] = strdup(tmp);
}
if (debug_pointer || debug_keyboard) {
if (bg || quiet) {
rfbLog("disabling -bg/-q under -debug_pointer"
"/-debug_keyboard\n");
bg = 0;
quiet = 0;
}
}
/* initialize added_keysyms[] array to zeros */
add_keysym(NoSymbol);
/* tie together cases of -localhost vs. -listen localhost */
if (! listen_str) {
if (allow_list && !strcmp(allow_list, "127.0.0.1")) {
listen_str = strdup("localhost");
argv_vnc[argc_vnc++] = strdup("-listen");
argv_vnc[argc_vnc++] = strdup(listen_str);
}
} else if (!strcmp(listen_str, "localhost") ||
!strcmp(listen_str, "127.0.0.1")) {
allow_list = strdup("127.0.0.1");
}
/* set OS struct UT */
uname(&UT);
initialize_crash_handler();
if (! quiet) {
print_settings(try_http, bg, gui_str);
} else {
rfbLogEnable(0);
}
X_INIT;
SCR_INIT;
/* open the X display: */
if (auth_file) {
set_env("XAUTHORITY", auth_file);
}
#if LIBVNCSERVER_HAVE_XKEYBOARD
/*
* Disable XKEYBOARD before calling XOpenDisplay()
* this should be used if there is ambiguity in the keymapping.
*/
if (xkbcompat) {
Bool rc = XkbIgnoreExtension(True);
if (! quiet) {
rfbLog("Disabling xkb XKEYBOARD extension. rc=%d\n",
rc);
}
if (watch_bell) {
watch_bell = 0;
if (! quiet) rfbLog("Disabling bell.\n");
}
}
#else
watch_bell = 0;
use_xkb_modtweak = 0;
#endif
if (users_list && strstr(users_list, "lurk=")) {
if (use_dpy) {
rfbLog("warning: -display does not make sense in "
"\"lurk=\" mode...\n");
}
lurk_loop(users_list);
}
if (use_dpy) {
dpy = XOpenDisplay(use_dpy);
} else if ( (use_dpy = getenv("DISPLAY")) ) {
dpy = XOpenDisplay(use_dpy);
} else {
dpy = XOpenDisplay("");
}
if (! dpy && raw_fb_str) {
rfbLog("continuing without X display in -rawfb mode, "
"hold on tight..\n");
goto raw_fb_pass_go_and_collect_200_dollars;
}
if (! dpy && ! use_dpy && ! getenv("DISPLAY")) {
int i, s = 4;
rfbLogEnable(1);
rfbLog("\a\n");
rfbLog("*** XOpenDisplay failed. No -display or DISPLAY.\n");
rfbLog("*** Trying \":0\" in %d seconds. Press Ctrl-C to"
" abort.\n", s);
rfbLog("*** ");
for (i=1; i<=s; i++) {
fprintf(stderr, "%d ", i);
sleep(1);
}
fprintf(stderr, "\n");
use_dpy = ":0";
dpy = XOpenDisplay(use_dpy);
if (dpy) {
rfbLog("*** XOpenDisplay of \":0\" successful.\n");
}
rfbLog("\n");
if (quiet) rfbLogEnable(0);
}
if (! dpy) {
char *d = use_dpy;
if (!d) d = getenv("DISPLAY");
if (!d) d = "null";
rfbLogEnable(1);
fprintf(stderr, "\n");
rfbLog("***************************************\n", d);
rfbLog("*** XOpenDisplay failed (%s)\n", d);
xopen_display_fail_message(d);
exit(1);
} else if (use_dpy) {
if (! quiet) rfbLog("Using X display %s\n", use_dpy);
} else {
if (! quiet) rfbLog("Using default X display.\n");
}
scr = DefaultScreen(dpy);
rootwin = RootWindow(dpy, scr);
if (! quiet) {
rfbLog("\n");
rfbLog("------------------ USEFUL INFORMATION ------------------\n");
}
if (remote_cmd || query_cmd) {
int rc = do_remote_query(remote_cmd, query_cmd, remote_sync,
query_default);
XFlush(dpy);
fflush(stderr);
fflush(stdout);
usleep(30 * 1000); /* still needed? */
XCloseDisplay(dpy);
exit(rc);
}
if (priv_remote) {
if (! remote_control_access_ok()) {
rfbLog("** Disabling remote commands in -privremote "
"mode.\n");
accept_remote_cmds = 0;
}
}
sync_tod_with_servertime();
if (grab_buster) {
spawn_grab_buster();
}
#if LIBVNCSERVER_HAVE_LIBXFIXES
if (! XFixesQueryExtension(dpy, &xfixes_base_event_type, &er)) {
if (! quiet) {
rfbLog("Disabling XFIXES mode: display does not "
"support it.\n");
}
xfixes_base_event_type = 0;
xfixes_present = 0;
} else {
xfixes_present = 1;
}
#endif
if (! xfixes_present) {
use_xfixes = 0;
}
#if LIBVNCSERVER_HAVE_LIBXDAMAGE
if (! XDamageQueryExtension(dpy, &xdamage_base_event_type, &er)) {
if (! quiet) {
rfbLog("Disabling X DAMAGE mode: display does not "
"support it.\n");
}
xdamage_base_event_type = 0;
xdamage_present = 0;
} else {
xdamage_present = 1;
}
#endif
if (! xdamage_present) {
use_xdamage = 0;
}
if (! quiet && xdamage_present && use_xdamage) {
rfbLog("X DAMAGE available on display, using it for"
" polling hints.\n");
rfbLog(" To disable this behavior use: "
"'-noxdamage'\n");
}
if (! quiet && wireframe) {
rfbLog("Wireframing: -wireframe mode is in effect for window "
"moves.\n");
rfbLog(" If this yields undesired behavior (poor response, "
"painting\n");
rfbLog(" errors, etc) it may be disabled:\n");
rfbLog(" - use '-nowf' to disable wireframing completely.\n");
rfbLog(" - use '-nowcr' to disable the Copy Rectangle after "
"the\n");
rfbLog(" moved window is released in the new position.\n");
rfbLog(" Also see the -help entry for tuning parameters.\n");
rfbLog(" You can press 3 Alt_L's (Left \"Alt\" key) in a row"
" to \n");
rfbLog(" repaint the screen, also see the -fixscreen option"
" for\n");
rfbLog(" periodic repaints.\n");
if (scale_str && !strstr(scale_str, "nocr")) {
rfbLog(" Note: '-scale' is on and this can cause "
"more problems.\n");
}
}
overlay_present = 0;
#ifdef SOLARIS_OVERLAY
if (! XQueryExtension(dpy, "SUN_OVL", &maj, &ev, &er)) {
if (! quiet && overlay) {
rfbLog("Disabling -overlay: SUN_OVL "
"extension not available.\n");
}
} else {
overlay_present = 1;
}
#endif
#ifdef IRIX_OVERLAY
if (! XReadDisplayQueryExtension(dpy, &ev, &er)) {
if (! quiet && overlay) {
rfbLog("Disabling -overlay: IRIX ReadDisplay "
"extension not available.\n");
}
} else {
overlay_present = 1;
}
#endif
if (overlay && !overlay_present) {
overlay = 0;
overlay_cursor = 0;
}
/* cursor shapes setup */
if (! multiple_cursors_mode) {
multiple_cursors_mode = strdup("default");
}
if (show_cursor) {
if(!strcmp(multiple_cursors_mode, "default")
&& xfixes_present && use_xfixes) {
free(multiple_cursors_mode);
multiple_cursors_mode = strdup("most");
if (! quiet) {
rfbLog("XFIXES available on display, resetting"
" cursor mode\n");
rfbLog(" to: '-cursor most'.\n");
rfbLog(" to disable this behavior use: "
"'-cursor arrow'\n");
rfbLog(" or '-noxfixes'.\n");
}
}
if(!strcmp(multiple_cursors_mode, "most")) {
if (xfixes_present && use_xfixes &&
overlay_cursor == 1) {
if (! quiet) {
rfbLog("using XFIXES for cursor "
"drawing.\n");
}
overlay_cursor = 0;
}
}
}
if (overlay) {
using_shm = 0;
if (flash_cmap && ! quiet) {
rfbLog("warning: -flashcmap may be "
"incompatible with -overlay\n");
}
if (show_cursor && overlay_cursor) {
char *s = multiple_cursors_mode;
if (*s == 'X' || !strcmp(s, "some") ||
!strcmp(s, "arrow")) {
/*
* user wants these modes, so disable fb cursor
*/
overlay_cursor = 0;
} else {
/*
* "default" and "most", we turn off
* show_cursor since it will automatically
* be in the framebuffer.
*/
show_cursor = 0;
}
}
}
initialize_cursors_mode();
/* check for XTEST */
if (! XTestQueryExtension_wr(dpy, &ev, &er, &maj, &min)) {
if (! quiet) {
rfbLog("WARNING: XTEST extension not available "
"(either missing from\n");
rfbLog(" display or client library libXtst "
"missing at build time).\n");
rfbLog(" MOST user input (pointer and keyboard) "
"will be DISCARDED.\n");
rfbLog(" If display does have XTEST, be sure to "
"build x11vnc with\n");
rfbLog(" a working libXtst build environment "
"(e.g. libxtst-dev,\n");
rfbLog(" or other packages).\n");
rfbLog("No XTEST extension, switching to "
"-xwarppointer mode for\n");
rfbLog(" pointer motion input.\n");
}
xtest_present = 0;
use_xwarppointer = 1;
} else {
xtest_present = 1;
xtest_base_event_type = ev;
if (maj <= 1 || (maj == 2 && min <= 2)) {
/* no events defined as of 2.2 */
xtest_base_event_type = 0;
}
}
if (! XETrapQueryExtension_wr(dpy, &ev, &er, &maj)) {
xtrap_present = 0;
} else {
xtrap_present = 1;
xtrap_base_event_type = ev;
}
/*
* Window managers will often grab the display during resize,
* etc, using XGrabServer(). To avoid deadlock (our user resize
* input is not processed) we tell the server to process our
* requests during all grabs:
*/
disable_grabserver(dpy, 0);
/* check for RECORD */
if (! XRecordQueryVersion_wr(dpy, &maj, &min)) {
xrecord_present = 0;
} else {
xrecord_present = 1;
}
initialize_xrecord();
tmpi = 1;
if (scroll_copyrect) {
if (strstr(scroll_copyrect, "never")) {
tmpi = 0;
}
} else if (scroll_copyrect_default) {
if (strstr(scroll_copyrect_default, "never")) {
tmpi = 0;
}
}
if (! xrecord_present) {
tmpi = 0;
}
#if !LIBVNCSERVER_HAVE_RECORD
tmpi = 0;
#endif
if (! quiet && tmpi) {
rfbLog("Scroll Detection: -scrollcopyrect mode is in effect "
"to\n");
rfbLog(" use RECORD extension to try to detect scrolling "
"windows\n");
rfbLog(" (induced by either user keystroke or mouse input).\n");
rfbLog(" If this yields undesired behavior (poor response, "
"painting\n");
rfbLog(" errors, etc) it may be disabled via: '-noscr'\n");
rfbLog(" Also see the -help entry for tuning parameters.\n");
rfbLog(" You can press 3 Alt_L's (Left \"Alt\" key) in a row"
" to \n");
rfbLog(" repaint the screen, also see the -fixscreen option"
" for\n");
rfbLog(" periodic repaints.\n");
if (scale_str && !strstr(scale_str, "nocr")) {
rfbLog(" Note: '-scale' is on and this can cause "
"more problems.\n");
}
}
/* check for OS with small shm limits */
if (using_shm && ! single_copytile) {
if (limit_shm()) {
single_copytile = 1;
}
}
single_copytile_orig = single_copytile;
/* check for MIT-SHM */
if (! XShmQueryExtension_wr(dpy)) {
xshm_present = 0;
if (! using_shm) {
if (! quiet) {
rfbLog("info: display does not support"
" XShm.\n");
}
} else {
if (! quiet) {
rfbLog("warning: XShm extension is not available.\n");
rfbLog("For best performance the X Display should be"
" local. (i.e.\n");
rfbLog("the x11vnc and X server processes should be"
" running on\n");
rfbLog("the same machine.)\n");
#if LIBVNCSERVER_HAVE_XSHM
rfbLog("Restart with -noshm to override this.\n");
}
exit(1);
#else
rfbLog("Switching to -noshm mode.\n");
}
using_shm = 0;
#endif
}
}
#if LIBVNCSERVER_HAVE_XKEYBOARD
/* check for XKEYBOARD */
initialize_xkb();
initialize_watch_bell();
if (!xkb_present && use_xkb_modtweak) {
if (! quiet) {
rfbLog("warning: disabling xkb modtweak."
" XKEYBOARD ext. not present.\n");
}
use_xkb_modtweak = 0;
}
#endif
if (xkb_present && !use_xkb_modtweak && !got_noxkb) {
if (use_modifier_tweak) {
switch_to_xkb_if_better();
}
}
#if LIBVNCSERVER_HAVE_LIBXRANDR
if (! XRRQueryExtension(dpy, &xrandr_base_event_type, &er)) {
if (xrandr && ! quiet) {
rfbLog("Disabling -xrandr mode: display does not"
" support X RANDR.\n");
}
xrandr_base_event_type = 0;
xrandr = 0;
xrandr_present = 0;
} else {
xrandr_present = 1;
}
#endif
check_pm();
if (! quiet) {
rfbLog("--------------------------------------------------------\n");
rfbLog("\n");
}
raw_fb_pass_go_and_collect_200_dollars:
#ifdef LIBVNCSERVER_WITH_TIGHTVNC_FILETRANSFER
if (filexfer) {
rfbRegisterTightVNCFileTransferExtension();
} else {
rfbUnregisterTightVNCFileTransferExtension();
}
#endif
if (! dt) {
static char str[] = "-desktop";
argv_vnc[argc_vnc++] = str;
argv_vnc[argc_vnc++] = choose_title(use_dpy);
rfb_desktop_name = strdup(argv_vnc[argc_vnc-1]);
}
initialize_pipeinput();
/*
* Create the XImage corresponding to the display framebuffer.
*/
fb0 = initialize_xdisplay_fb();
/*
* n.b. we do not have to X_LOCK any X11 calls until watch_loop()
* is called since we are single-threaded until then.
*/
initialize_screen(&argc_vnc, argv_vnc, fb0);
if (try_http && ! got_httpdir && check_httpdir()) {
http_connections(1);
}
initialize_tiles();
/* rectangular blackout regions */
initialize_blackouts_and_xinerama();
/* created shm or XImages when using_shm = 0 */
initialize_polling_images();
initialize_signals();
initialize_speeds();
initialize_keyboard_and_pointer();
initialize_allowed_input();
if (inetd && use_openssl) {
accept_openssl(OPENSSL_INETD);
}
if (! inetd && ! use_openssl) {
if (! screen->port || screen->listenSock < 0) {
rfbLogEnable(1);
rfbLog("Error: could not obtain listening port.\n");
clean_up_exit(1);
}
}
if (! quiet) {
rfbLog("screen setup finished.\n");
if (SHOW_NO_PASSWORD_WARNING && !nopw) {
rfbLog("\n");
rfbLog("WARNING: You are running x11vnc WITHOUT"
" a password. See\n");
rfbLog("WARNING: the warning message printed above"
" for more info.\n");
}
}
set_vnc_desktop_name();
#if LIBVNCSERVER_HAVE_FORK && LIBVNCSERVER_HAVE_SETSID
if (bg) {
/* fork into the background now */
int p, n;
if ((p = fork()) > 0) {
exit(0);
} else if (p == -1) {
rfbLogEnable(1);
fprintf(stderr, "could not fork\n");
perror("fork");
clean_up_exit(1);
}
if (setsid() == -1) {
rfbLogEnable(1);
fprintf(stderr, "setsid failed\n");
perror("setsid");
clean_up_exit(1);
}
/* adjust our stdio */
n = open("/dev/null", O_RDONLY);
dup2(n, 0);
dup2(n, 1);
if (! logfile) {
dup2(n, 2);
}
if (n > 2) {
close(n);
}
}
#endif
watch_loop();
return(0);
#undef argc
#undef argv
}