x11vnc: add zeroconf external helpers (avahi-publish and

dns-sd).  Alias -zeroconf.  Close pipeinput_fh on exit.
Kludge to make -solid work on MacOSX console.  Attempt at
cpp macros to disable newer libvncserver interfaces.

x11vnc/ChangeLog

+2008-11-09  Karl Runge <runge@karlrunge.com>
+	* x11vnc: add zeroconf external helpers (avahi-publish and
+	  dns-sd).  Alias -zeroconf.  Close pipeinput_fh on exit.
+	  Kludge to make -solid work on MacOSX console.  Attempt at
+	  cpp macros to disable newer libvncserver interfaces.
+
 2008-10-29  Karl Runge <runge@karlrunge.com>
 	* x11vnc: -http_oneport for single port HTTP and VNC.
 	  Improve find_display wrt lsof blocking with -b.

x11vnc/avahi.c

@@ -7,18 +7,122 @@ void avahi_advertise(const char *name, const char *host, const uint16_t port);
 void avahi_reset(void);
 void avahi_cleanup(void);
 
+static pid_t avahi_pid = 0;
+
+static void kill_avahi_pid(void) {
+	if (avahi_pid != 0) {
+		kill(avahi_pid, SIGTERM);
+		avahi_pid = 0;
+	}
+}
+
+static int try_avahi_helper(const char *name, const char *host, const uint16_t port) {
+#if LIBVNCSERVER_HAVE_FORK
+	char *cmd, *p, *path = getenv("PATH"), portstr[32];
+	int i;
+
+	/* avahi-publish */
+	if (no_external_cmds || !cmd_ok("zeroconf")) {
+		return 0;
+	}
+
+	if (!path) {
+		return 0;
+	}
+
+	path = strdup(path); 
+	cmd = (char *) malloc(strlen(path) + 100);
+	sprintf(portstr, "%d", (int) port);
+
+	p = strtok(path, ":");
+	while (p) {
+		struct stat sbuf;
+
+		sprintf(cmd, "%s/avahi-publish", p);
+		if (stat(cmd, &sbuf) == 0) {
+			break;
+		}
+		sprintf(cmd, "%s/dns-sd", p);
+		if (stat(cmd, &sbuf) == 0) {
+			break;
+		}
+		sprintf(cmd, "%s/mDNS", p);
+		if (stat(cmd, &sbuf) == 0) {
+			break;
+		}
+		cmd[0] = '\0';
+
+		p = strtok(NULL, ":");
+	}
+	free(path);
+
+	if (!strcmp(cmd, "")) {
+		free(cmd);
+		rfbLog("Could not find an external avahi/zeroconf helper program.\n");
+		return 0;
+	}
+
+	avahi_pid = fork();
+
+	if (avahi_pid < 0) {
+		rfbLogPerror("fork");
+		avahi_pid = 0;
+		free(cmd);
+		return 0;
+	}
+
+	if (avahi_pid != 0) {
+		int status;
+
+		usleep(500 * 1000);
+		waitpid(avahi_pid, &status, WNOHANG); 
+		if (kill(avahi_pid, 0) != 0) {
+			waitpid(avahi_pid, &status, WNOHANG); 
+			avahi_pid = 0;
+			free(cmd);
+			return 0;
+		}
+		if (! quiet) {
+			rfbLog("%s helper pid is: %d\n", cmd, (int) avahi_pid);
+		}
+		free(cmd);
+		return 1;
+	}
+
+	for (i=3; i<256; i++) {
+		close(i);
+	}
+
+	if (strstr(cmd, "/avahi-publish")) {
+		execlp(cmd, cmd, "-s", name, "_rfb._tcp", portstr, (char *) NULL);
+	} else {
+		execlp(cmd, cmd, "-R", name, "_rfb._tcp", ".", portstr, (char *) NULL);
+	}
+	exit(1);
+#else
+	if (!name || !host || !port) {}
+	return 0;
+#endif
+}
+
 #if !defined(LIBVNCSERVER_HAVE_AVAHI) || !defined(LIBVNCSERVER_HAVE_LIBPTHREAD)
 void avahi_initialise(void) {
 	rfbLog("avahi_initialise: no Avahi support at buildtime.\n");
 }
+
 void avahi_advertise(const char *name, const char *host, const uint16_t port) {
-	if (!name || !host || !port) {}
-	rfbLog("avahi_advertise:  no Avahi support at buildtime.\n");
+	if (!try_avahi_helper(name, host, port)) {
+		rfbLog("avahi_advertise:  no Avahi support at buildtime.\n");
+	}
 }
+
 void avahi_reset(void) {
+	kill_avahi_pid();
 	rfbLog("avahi_reset: no Avahi support at buildtime.\n");
 }
+
 void avahi_cleanup(void) {
+	kill_avahi_pid();
 	rfbLog("avahi_cleanup: no Avahi support at buildtime.\n");
 }
 #else

x11vnc/cleanup.c

@@ -30,7 +30,7 @@ XErrorEvent *trapped_xerror_event;
 int crash_debug = 0;
 
 void clean_shm(int quick);
-void clean_up_exit (int ret);
+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);
@@ -110,7 +110,7 @@ static void clean_icon_mode(void) {
 /*
  * Normal exiting
  */
-void clean_up_exit (int ret) {
+void clean_up_exit(int ret) {
 	static int depth = 0;
 	exit_flag = 1;
 
@@ -150,6 +150,11 @@ void clean_up_exit (int ret) {
 	}
 #endif
 
+	if (pipeinput_fh != NULL) {
+		pclose(pipeinput_fh);
+		pipeinput_fh = NULL;
+	}
+
 	if (! dpy) exit(ret);	/* raw_rb hack */
 
 	/* X keyboard cleanups */

x11vnc/cleanup.h

@@ -12,7 +12,7 @@ extern XErrorEvent *trapped_xerror_event;
 extern int crash_debug;
 
 extern void clean_shm(int quick);
-extern void clean_up_exit (int ret);
+extern void clean_up_exit(int ret);
 
 extern int trap_xerror(Display *d, XErrorEvent *error);
 extern int trap_xioerror(Display *d);

x11vnc/help.c

@@ -430,7 +430,12 @@ void print_help(int mode) {
 "                       Rendezvous, Bonjour).  Depending on your setup, you\n"
 "                       may need to start avahi-daemon and open udp port 5353\n"
 "                       in your firewall.\n"
+"\n"
+"                       If the avahi API cannot be found at build time, a helper\n"
+"                       program like avahi-publish(1) or dns-sd(1) will be tried\n"
+"\n"
 "-mdns                  Same as -avahi.\n"
+"-zeroconf              Same as -avahi.\n"
 "\n"
 "-connect string        For use with \"vncviewer -listen\" reverse connections.\n"
 "                       If \"string\" has the form \"host\" or \"host:port\"\n"
@@ -2193,6 +2198,12 @@ void print_help(int mode) {
 "                       may be needed for GNOME and KDE.  If x11vnc guesses\n"
 "                       your desktop incorrectly, you can force it by prefixing\n"
 "                       color with \"gnome:\", \"kde:\", \"cde:\" or \"root:\".\n"
+"\n"
+"                       This mode works in a limited way on the Mac OS X Console\n"
+"                       with one color ('kelp') using the screensaver writing\n"
+"                       to the background.  Look in \"~/Library/Screen Savers\"\n"
+"                       for VncSolidColor.png to change the color.\n"
+"\n"
 "-blackout string       Black out rectangles on the screen. \"string\" is a\n"
 "                       comma separated list of WxH+X+Y type geometries for\n"
 "                       each rectangle.  If one of the items on the list is the\n"
@@ -4474,14 +4485,15 @@ void print_help(int mode) {
 "                       connectfile can be accessed by other users.  Once\n"
 "                       remote-control is disabled it cannot be turned back on.\n"
 "-nocmds                No external commands (e.g. system(3), popen(3), exec(3))\n"
-"                       will be run.\n"
+"                       will be run at all.\n"
 "-allowedcmds list      \"list\" contains a comma separated list of the only\n"
 "                       external commands that can be run.  The full list of\n"
 "                       associated options is:\n"
 "\n"
-"                        stunnel, ssl, unixpw, WAIT, id, accept, afteraccept,\n"
-"                        gone, pipeinput, v4l-info, rawfb-setup, dt, gui, ssh,\n"
-"                        storepasswd, passwdfile, custom_passwd, crash.\n"
+"                        stunnel, ssl, unixpw, WAIT, zeroconf, id, accept,\n"
+"                        afteraccept, gone, pipeinput, v4l-info, rawfb-setup,\n"
+"                        dt, gui, ssh, storepasswd, passwdfile, custom_passwd,\n"
+"                        crash.\n"
 "\n"
 "                       See each option's help to learn the associated external\n"
 "                       command.  Note that the -nocmds option takes precedence\n"

x11vnc/macosxCG.c

@@ -146,7 +146,7 @@ extern void usleep(unsigned long usec);
 extern int usleep(useconds_t usec);
 #endif
 extern unsigned int sleep(unsigned int seconds);
-extern void clean_up_exit (int ret);
+extern void clean_up_exit(int ret);
 
 void macosxCG_event_loop(void) {
 	OSStatus rc;

x11vnc/rates.c

@@ -377,8 +377,10 @@ void measure_send_rates(int init) {
 		}
 		rbs = cl->rawBytesEquivalent;
 #else
+#if LIBVNCSERVER_HAS_STATS
 		cbs = rfbStatGetSentBytes(cl);
 		rbs = rfbStatGetSentBytesIfRaw(cl);
+#endif
 #endif
 
 		if (init) {
@@ -481,7 +483,9 @@ if (db) fprintf(stderr, "dt2 calc: num rects req: %d/%d mod: %d/%d  "
 #if 0
     cl->framebufferUpdateMessagesSent,
 #else
+#if LIBVNCSERVER_HAS_STATS
     rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate),
+#endif
 #endif
     dt, dt2, tm);
 			if (req1 != 0 && mod1 == 0) {
@@ -558,7 +562,9 @@ if (db) fprintf(stderr, "dt3 calc: num rects req: %d/%d mod: %d/%d  "
 #if 0
     cl->framebufferUpdateMessagesSent,
 #else
+#if LIBVNCSERVER_HAS_STATS
     rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate),
+#endif
 #endif
     dt, dt3, tm);
 

x11vnc/remote.c

@@ -1417,7 +1417,7 @@ char *process_remote_cmd(char *cmd, int stringonly) {
 		deny_all = 0;
 		goto done;
 	}
-	if (!strcmp(p, "avahi") || !strcmp(p, "mdns")) {
+	if (!strcmp(p, "avahi") || !strcmp(p, "mdns") || !strcmp(p, "zeroconf")) {
 		if (query) {
 			snprintf(buf, bufn, "ans=%s:%d", p, avahi);
 			goto qry;
@@ -1431,7 +1431,7 @@ char *process_remote_cmd(char *cmd, int stringonly) {
 		}
 		goto done;
 	}
-	if (!strcmp(p, "noavahi") || !strcmp(p, "nomdns")) {
+	if (!strcmp(p, "noavahi") || !strcmp(p, "nomdns") || !strcmp(p, "nozeroconf")) {
 		if (query) {
 			snprintf(buf, bufn, "ans=%s:%d", p, !avahi);
 			goto qry;
@@ -1914,7 +1914,7 @@ char *process_remote_cmd(char *cmd, int stringonly) {
 		}
 		solid_str = new;
 		use_solid_bg = 1;
-		if (raw_fb) set_raw_fb_params(0);
+		if (raw_fb && !macosx_console) set_raw_fb_params(0);
 
 		if (doit && client_count) {
 			solid_bg(0);
@@ -1932,7 +1932,7 @@ char *process_remote_cmd(char *cmd, int stringonly) {
 			solid_str = strdup(solid_default);
 		}
 		use_solid_bg = 1;
-		if (raw_fb) set_raw_fb_params(0);
+		if (raw_fb && !macosx_console) set_raw_fb_params(0);
 		if (client_count && !orig) {
 			solid_bg(0);
 		}

x11vnc/screen.c

@@ -1557,7 +1557,7 @@ if (db) fprintf(stderr, "initialize_raw_fb reset\n");
 
 	if (sscanf(str, "shm:%d", &shmid) == 1) {
 		/* shm:N */
-#if LIBVNCSERVER_HAVE_XSHM
+#if LIBVNCSERVER_HAVE_XSHM || LIBVNCSERVER_HAVE_SHMAT
 		raw_fb_addr = (char *) shmat(shmid, 0, SHM_RDONLY);
 		if (! raw_fb_addr) {
 			rfbLogEnable(1);
@@ -3402,7 +3402,9 @@ static void record_last_fb_update(void) {
 #if 0
 		rbs += cl->rawBytesEquivalent;
 #else
+#if LIBVNCSERVER_HAS_STATS
 		rbs += rfbStatGetSentBytesIfRaw(cl);
+#endif
 #endif
 	}
 	rfbReleaseClientIterator(iter);

x11vnc/solid.c

@@ -17,7 +17,7 @@ XImage *solid_root(char *color);
 static void solid_cde(char *color);
 static void solid_gnome(char *color);
 static void solid_kde(char *color);
-
+static void solid_macosx(int restore);
 
 static void usr_bin_path(int restore) {
 	static char *oldpath = NULL;
@@ -914,6 +914,70 @@ void gnome_no_animate(void) {
 	;
 }
 
+static pid_t solid_macosx_pid = 0;
+extern char macosx_solid_background[];
+
+static void solid_macosx(int restore) {
+	char tmp[] = "/tmp/macosx_solid_background.XXXXXX";
+	pid_t pid, parent = getpid();
+
+	if (restore) {
+		rfbLog("restore pid: %d\n", (int) solid_macosx_pid);
+		if (solid_macosx_pid > 0) {
+			int i, status;
+			rfbLog("kill -TERM macosx_solid_background helper pid: %d\n", (int) solid_macosx_pid);
+			kill(solid_macosx_pid, SIGTERM);
+#if 0
+#if LIBVNCSERVER_HAVE_SYS_WAIT_H
+#if LIBVNCSERVER_HAVE_WAITPID
+			for (i=0; i < 7; i++) {
+				usleep(1000 * 1000);
+				waitpid(solid_macosx_pid, &status, WNOHANG); 
+				if (kill(solid_macosx_pid, 0) != 0) {
+					break;
+				}
+			}
+#endif
+#endif
+#endif
+			solid_macosx_pid = 0;
+		}
+		return;
+	}
+	if (no_external_cmds || !cmd_ok("dt")) {
+		return;
+	}
+#if LIBVNCSERVER_HAVE_FORK
+	pid = fork();
+
+	if (pid == -1) {
+		perror("fork");
+		return;
+	}
+	if (pid == 0) {
+		int fd = mkstemp(tmp);
+#if LIBVNCSERVER_HAVE_SETSID
+		setsid();
+#else
+		setpgrp();
+#endif
+		if (fd >= 0) {
+			char num[32];
+			write(fd, macosx_solid_background, strlen(macosx_solid_background));
+			close(fd);
+			sprintf(num, "%d", (int) parent);
+			set_env("SS_WATCH_PID", num);
+			execlp("/bin/sh", "/bin/sh", tmp, (char *) NULL);
+		}
+		exit(1);
+	}
+	solid_macosx_pid = pid;
+	rfbLog("macosx_solid_background helper pid: %d\n", (int) solid_macosx_pid);
+	usleep(2750 * 1000);
+	unlink(tmp);
+#endif
+}
+
 char *guess_desktop(void) {
 #if NO_X11
 	RAWFB_RET("root")
@@ -1018,13 +1082,18 @@ void solid_bg(int restore) {
 	static char *prev_str;
 	char *dtname, *color;
 
-	RAWFB_RET_VOID
-
 	if (started_as_root == 1 && users_list) {
 		/* we are still root, don't try. */
 		return;
 	}
 
+	if (macosx_console) {
+		solid_macosx(restore);
+		return;
+	}
+
+	RAWFB_RET_VOID
+
 	if (restore) {
 		if (! solid_on) {
 			return;

x11vnc/sslhelper.c

@@ -932,7 +932,9 @@ void openssl_port(void) {
 	if (shutdown) {
 		if (db) fprintf(stderr, "shutting down %d/%d\n",
 		    port, screen->listenSock);
+#if LIBVNCSERVER_HAS_SHUTDOWNSOCKETS
 		rfbShutdownSockets(screen);
+#endif
 	}
 
 	sock = rfbListenOnTCPPort(port, iface);

x11vnc/ssltools.h

@@ -2066,4 +2066,119 @@ char create_display[] =
 "exit 1\n"
 ;
 
+char macosx_solid_background[] = 
+"#!/bin/sh\n"
+"\n"
+"#set -xv\n"
+"\n"
+"# This is where the user's screen/slide savers are stored:\n"
+"#\n"
+"SS_DIR=\"$HOME/Library/Screen Savers\"\n"
+"\n"
+"if [ ! -d \"$SS_DIR\" ]; then\n"
+"	exit\n"
+"fi\n"
+"\n"
+"PATH=/bin:/usr/bin:$PATH; export PATH\n"
+"\n"
+"# Check to see if our tarball has already been unpacked.  If it has been\n"
+"# we don't unpack it again.  This lets the user overwrite the png with\n"
+"# a different color if they want.  At some point we could try to create\n"
+"# or own PPM file or something on the fly...\n"
+"#\n"
+"test_file=\"$SS_DIR/VncSolidColor.slideSaver/Contents/Resources/VncSolidColor01.png\"\n"
+"if [ ! -f \"$test_file\" ]; then\n"
+"	# get the line number the tarball data starts at:\n"
+"	N=`grep -n ^void_func \"$0\" | awk -F: '{print $1}' | head -n 1`\n"
+"	if echo \"$N\" | grep '^[0-9][0-9]*$' > /dev/null; then\n"
+"		:\n"
+"	else\n"
+"		exit\n"
+"	fi\n"
+"	N=`expr $N + 1`\n"
+"\n"
+"	# pipe the bottom of this file through uudecode and tar:\n"
+"	tail -n +$N \"$0\" | (cd \"$SS_DIR\" || exit 1; uudecode -o /dev/stdout | tar xzf -)\n"
+"fi\n"
+"if [ ! -f \"$test_file\" ]; then\n"
+"	# some problem unpacking...\n"
+"	exit\n"
+"fi\n"
+"\n"
+"# on exit or interrupt, we kill the screen saver we started:\n"
+"#\n"
+"trap 'kill -CONT $SS_PID >/dev/null 2>&1; kill -TERM $SS_PID >/dev/null 2>&1' 0 2 15\n"
+"SS_PID=9999999\n"
+"\n"
+"# start the screensaver and record its pid:\n"
+"#\n"
+"/System/Library/Frameworks/ScreenSaver.framework/Resources/ScreenSaverEngine.app/Contents/MacOS/ScreenSaverEngine -background -module VncSolidColor &\n"
+"SS_PID=$!\n"
+"\n"
+"# wait a bit for it to get started...\n"
+"#\n"
+"sleep 10\n"
+"\n"
+"# loop forever waiting for some change:\n"
+"#\n"
+"while [ 1 ]\n"
+"do\n"
+"	if kill -0 $SS_PID >/dev/null 2>&1; then\n"
+"		:\n"
+"	else\n"
+"		# screen saver is gone, exit.\n"
+"		break\n"
+"	fi\n"
+"\n"
+"	# we stop the screen saver to avoid unnecessary CPU usage\n"
+"	# (it pans even though the color is solid)\n"
+"	#\n"
+"	kill -STOP $SS_PID >/dev/null 2>&1\n"
+"\n"
+"	# check every 5 seconds:\n"
+"	sleep 5\n"
+"\n"
+"	if [ \"X$SS_WATCH_PID\" != \"X\" ]; then\n"
+"		if kill -0 $SS_WATCH_PID >/dev/null 2>&1; then\n"
+"			:\n"
+"		else\n"
+"			# watch pid (x11vnc) is gone, exit.\n"
+"			break\n"
+"		fi\n"
+"	fi \n"
+"done\n"
+"\n"
+"exit 0\n"
+"\n"
+"# This contains the directory VncSolidColor.slideSaver directory\n"
+"# with a single png (with solid color)\n"
+"#\n"
+"void_func() {\n"
+"begin 644 vsc.tar.gz\n"
+"M'XL(`$+,#TD``^V706_32!2`714*%)!6@@,@D*9!2,NAMB=V;+9*4Y(X+1%M\n"
+"M&NJT`B'06O;$]=:QC3UIVA,5)T#\\`M0+?P!QWE-7NQ*'E?;`826N'.\"`]@\\L\n"
+"M%YZ3\"*EI32ATLR#FDYR)Q^^]&<][;^9YR3-UWW6LHN_Z(1_!/Z(;JR04N/U#\n"
+"M!-1,IM.J8KL5TW*G[<!AC$5)E66<D3@1RXHJ<RBSCW-(I!E1(T2(\"YN>33XB\n"
+"M!V+U^B`F-%B6DOQ?]#U*/!KM0R#LP?]I6<3@?T56).;_0=#?_V6O[O.!ZT3T\n"
+"M<\\>(':S(<I+_L:2F/_A?4B!.TJ(LJQP2]_-%D_C._9^=6FNX\"!P>.;XWF<*\\\n"
+"MF$+$,WW+\\>S)U&)M>OQ2:BHWFAW3YHNU&]42:D<\"JBX69LM%E!H7A'P0N$00\n"
+"MM)J&JK-EO8;`AB\"4*BF46J8TF!\"$5JO%&[$4;_J-6#`2JJ$?D)\"NSX*Q<5#@\n"
+"M+6JE8)B.]6W3@5[+,6EN]$AVA:SGBM.%IF>Y1\".KQ/6#!L3H`K%!.BO$CT$J\n"
+"MHB%,/E?R;#\"VG!6Z]SWZ,X3&D:VW'_;JME,\"F7%.H,@,\"?%0%&<%:OA6TR6H\n"
+"M#OU+E6*2[;(%LW+J#@E[#<,\"=)>B8[9ME=^6A(E&8;8:+`2\\JA&N+W66J->^\n"
+"MPHM)^A6C07K%I_V01#1)HVJ8*X9-:NO!#L5\"19M-4M.7_9!VY[?[\\F(>)RH[\n"
+"MMF?09KACQ\"D@22EA,;8-DQ4Z4905VC&6&_V_,^_KH/_^OT`BOQF:Y/,K@;W4\n"
+"M?QG<W?\\S[/P?!'OQ_S99$?.!9W_2&'W.?X@-M>M_J`324/]#%2A+[/P?!`^J\n"
+"ME9GCHV?BW?!X^8JV`.U&?!T>@=_?<\\:?T!RP\\W-YCGLY7/A[_@G<'PFNW(@X\n"
+"M[NB)^!KB'F^>@LXQ6KI.=;].6T9(N&M-QURI.0V\",G\"X*^C'.<.<UR]ROSXL\n"
+"MG07A0[0\\5SKTXL\"9DQ,7+Z2OPEA#U\\I:OK:V^<\\+/+2%N*UG.+K^&_=O?F3F\n"
+"MQ,')B=>WWYQ_>_?<ULV1^]+ES:%7QWZP-RX-_W$:_<7=85V[=]V*IH?//WK^\n"
+"M\\EWLYG*IHCTM_'QOA__[YW^W&/N\"3X\"^^0_??%A4U(R\"TZJD0/[C-*O_!\\,W\n"
+"M5_\\7FHYK)11\\JB3])T7II]27'0UXKU^(27>KM?5V;BW[K:A726^?KPF#_!1G\n"
+"?\"\"MC&0P&@\\%@,!@,!H/!8#`8#,;>>0_24O15`\"@`````\n"
+"`\n"
+"end\n"
+"}\n"
+;
+
 #endif /* _SSLTOOLS_H */

x11vnc/userinput.c

@@ -5362,7 +5362,9 @@ int fb_update_sent(int *count) {
 #if 0
 		sent += cl->framebufferUpdateMessagesSent;
 #else
+#if LIBVNCSERVER_HAS_STATS
 		sent += rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate);
+#endif
 #endif
 	}
 	rfbReleaseClientIterator(i);

x11vnc/x11vnc.1

 .\" This file was automatically generated from x11vnc -help output.
-.TH X11VNC "1" "October 2008" "x11vnc " "User Commands"
+.TH X11VNC "1" "November 2008" "x11vnc " "User Commands"
 .SH NAME
 x11vnc - allow VNC connections to real X11 displays
-         version: 0.9.6, lastmod: 2008-10-29
+         version: 0.9.6, lastmod: 2008-11-04
 .SH SYNOPSIS
 .B x11vnc
 [OPTION]...
@@ -505,11 +505,22 @@ this VNC server to the local network. (Related terms:
 Rendezvous, Bonjour).  Depending on your setup, you
 may need to start avahi-daemon and open udp port 5353
 in your firewall.
+.IP
+If the avahi API cannot be found at build time, a helper
+program like avahi-
+.IR publish (1)
+or dns-
+.IR sd (1)
+will be tried
 .PP
 \fB-mdns\fR
 .IP
 Same as \fB-avahi.\fR
 .PP
+\fB-zeroconf\fR
+.IP
+Same as \fB-avahi.\fR
+.PP
 \fB-connect\fR \fIstring\fR
 .IP
 For use with "vncviewer -listen" reverse connections.
@@ -2475,6 +2486,11 @@ or
 may be needed for GNOME and KDE.  If x11vnc guesses
 your desktop incorrectly, you can force it by prefixing
 color with "gnome:", "kde:", "cde:" or "root:".
+.IP
+This mode works in a limited way on the Mac OS X Console
+with one color ('kelp') using the screensaver writing
+to the background.  Look in "~/Library/Screen Savers"
+for VncSolidColor.png to change the color.
 .PP
 \fB-blackout\fR \fIstring\fR
 .IP
@@ -5427,7 +5443,7 @@ No external commands (e.g.
 , 
 .IR exec (3)
 )
-will be run.
+will be run at all.
 .PP
 \fB-allowedcmds\fR \fIlist\fR
 .IP
@@ -5435,9 +5451,10 @@ will be run.
 external commands that can be run.  The full list of
 associated options is:
 .IP
-stunnel, ssl, unixpw, WAIT, id, accept, afteraccept,
-gone, pipeinput, v4l-info, rawfb-setup, dt, gui, ssh,
-storepasswd, passwdfile, custom_passwd, crash.
+stunnel, ssl, unixpw, WAIT, zeroconf, id, accept,
+afteraccept, gone, pipeinput, v4l-info, rawfb-setup,
+dt, gui, ssh, storepasswd, passwdfile, custom_passwd,
+crash.
 .IP
 See each option's help to learn the associated external
 command.  Note that the \fB-nocmds\fR option takes precedence

x11vnc/x11vnc.c

@@ -2176,7 +2176,7 @@ int main(int argc, char* argv[]) {
 			http_ssl = 1;
 			continue;
 		}
-		if (!strcmp(arg, "-avahi") || !strcmp(arg, "-mdns")) {
+		if (!strcmp(arg, "-avahi") || !strcmp(arg, "-mdns") || !strcmp(arg, "-zeroconf")) {
 			avahi = 1;
 			continue;
 		}

x11vnc/x11vnc.h

@@ -134,6 +134,29 @@
 #define PASSWD_UNLESS_NOPW 0
 #endif
 
+/* some -D macros for building with old LibVNCServer */
+#ifndef LIBVNCSERVER_HAS_STATS
+#define LIBVNCSERVER_HAS_STATS 1
+#endif
+
+#ifndef LIBVNCSERVER_HAS_SHUTDOWNSOCKETS
+#define LIBVNCSERVER_HAS_SHUTDOWNSOCKETS 1
+#endif
+
+#ifndef LIBVNCSERVER_HAS_TEXTCHAT
+#define LIBVNCSERVER_HAS_TEXTCHAT 1
+#endif
+
+#ifdef PRE_0_8_LIBVNCSERVER
+#undef  LIBVNCSERVER_WITH_TIGHTVNC_FILETRANSFER
+#undef  LIBVNCSERVER_HAS_STATS
+#undef  LIBVNCSERVER_HAS_SHUTDOWNSOCKETS
+#undef  LIBVNCSERVER_HAS_TEXTCHAT 
+#define LIBVNCSERVER_HAS_STATS 0
+#define LIBVNCSERVER_HAS_SHUTDOWNSOCKETS 0
+#define LIBVNCSERVER_HAS_TEXTCHAT 0
+#endif
+
 /* these are for delaying features: */
 #define xxNO_SSL_OR_UNIXPW
 #define xxNO_NCACHE
@@ -213,6 +236,10 @@
 #include <sys/shm.h>
 #include <X11/extensions/XShm.h>
 #endif
+#if LIBVNCSERVER_HAVE_SHMAT
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#endif
 
 #include <dirent.h>
 

x11vnc/x11vnc_defs.c

@@ -15,7 +15,7 @@ int xtrap_base_event_type = 0;
 int xdamage_base_event_type = 0;
 
 /*               date +'lastmod: %Y-%m-%d' */
-char lastmod[] = "0.9.6 lastmod: 2008-10-29";
+char lastmod[] = "0.9.6 lastmod: 2008-11-04";
 
 /* X display info */
 

x11vnc/xevents.c

@@ -1628,6 +1628,7 @@ void set_text_chat(rfbClientPtr cl, int len, char *txt) {
 		rfbCloseClient(cl);
 		return;
 	}
+#if LIBVNCSERVER_HAS_TEXTCHAT
 
 	if (chat_window && chat_window_client == NULL && ulen == rfbTextChatOpen) {
 		try_local_chat_window();
@@ -1662,6 +1663,7 @@ void set_text_chat(rfbClientPtr cl, int len, char *txt) {
 		/* not clear what is going on WRT close and finished... */
 		rfbSendTextChatMessage(cl, rfbTextChatFinished, "");
 	}
+#endif
 }
 
 int get_keyboard_led_state_hook(rfbScreenInfoPtr s) {