libtdevnc/x11vnc/remote.c

/*
   Copyright (C) 2002-2009 Karl J. Runge <runge@karlrunge.com> 
   All rights reserved.

This file is part of x11vnc.

x11vnc is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

x11vnc is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with x11vnc; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA
or see <http://www.gnu.org/licenses/>.

In addition, as a special exception, Karl J. Runge
gives permission to link the code of its release of x11vnc with the
OpenSSL project's "OpenSSL" library (or with modified versions of it
that use the same license as the "OpenSSL" library), and distribute
the linked executables.  You must obey the GNU General Public License
in all respects for all of the code used other than "OpenSSL".  If you
modify this file, you may extend this exception to your version of the
file, but you are not obligated to do so.  If you do not wish to do
so, delete this exception statement from your version.
*/

/* -- remote.c -- */

#include "x11vnc.h"
#include "inet.h"
#include "xwrappers.h"
#include "xevents.h"
#include "xinerama.h"
#include "xrandr.h"
#include "xdamage.h"
#include "xrecord.h"
#include "xkb_bell.h"
#include "win_utils.h"
#include "screen.h"
#include "cleanup.h"
#include "gui.h"
#include "solid.h"
#include "user.h"
#include "rates.h"
#include "scan.h"
#include "connections.h"
#include "pointer.h"
#include "cursor.h"
#include "userinput.h"
#include "keyboard.h"
#include "selection.h"
#include "unixpw.h"
#include "uinput.h"
#include "userinput.h"
#include "avahi.h"

int send_remote_cmd(char *cmd, int query, int wait);
int do_remote_query(char *remote_cmd, char *query_cmd, int remote_sync,
    int qdefault);
void check_black_fb(void);
int check_httpdir(void);
void http_connections(int on);
int remote_control_access_ok(void);
char *process_remote_cmd(char *cmd, int stringonly);


static char *add_item(char *instr, char *item);
static char *delete_item(char *instr, char *item);
static void if_8bpp_do_new_fb(void);
static void reset_httpport(int old, int new);
static void reset_rfbport(int old, int new) ;

char *query_result = NULL;

/*
 * for the wild-n-crazy -remote/-R interface.
 */
int send_remote_cmd(char *cmd, int query, int wait) {
	FILE *in = NULL;

	if (query_result != NULL) {
		free(query_result);
		query_result = NULL;
	}

	if (client_connect_file) {
		umask(077);
		in = fopen(client_connect_file, "w");
		if (in == NULL) {
			fprintf(stderr, "send_remote_cmd: could not open "
			    "connect file \"%s\" for writing\n",
			    client_connect_file);
			perror("fopen");
			return 1;
		}
	} else if (x11vnc_remote_prop == None) {
		initialize_x11vnc_remote_prop();
		if (x11vnc_remote_prop == None) {
			fprintf(stderr, "send_remote_cmd: could not obtain "
			    "X11VNC_REMOTE X property\n");
			return 1;
		}
	}

	if (in != NULL) {
		fprintf(stderr, ">>> sending remote command: \"%s\"\n  via"
		    " connect file: %s\n", cmd, client_connect_file);
		fprintf(in, "%s\n", cmd);
		fclose(in);
	} else {
		fprintf(stderr, ">>> sending remote command: \"%s\" via"
		    " X11VNC_REMOTE X property.\n", cmd);
		set_x11vnc_remote_prop(cmd);
		if (dpy) {
			XFlush_wr(dpy);
		}
	}

	if (query || wait) {
		char line[X11VNC_REMOTE_MAX];	
		int rc=1, i=0, max=140, ms_sl=25;

		if (!strcmp(cmd, "cmd=stop")) {
			max = 40;
		}
		if (strstr(cmd, "script:")) {
			max = 400;
		}
		if (strstr(cmd, "bcx_xattach:")) {
			max = 400;
		}
		if (getenv("X11VNC_SYNC_TIMEOUT")) {
			max = (int) ((1000. * atof(getenv("X11VNC_SYNC_TIMEOUT")))/ms_sl);
		}
		for (i=0; i<max; i++) {
			if (i==0) {
				usleep(10 * 1000);
			} else {
				usleep(ms_sl * 1000);
			}
			if (client_connect_file) {
				char *q;
				in = fopen(client_connect_file, "r");
				if (in == NULL) {
					fprintf(stderr, "send_remote_cmd: could"
					    " not open connect file \"%s\" for"
					    " writing\n", client_connect_file);
					perror("fopen");
					return 1;
				}
				fgets(line, X11VNC_REMOTE_MAX, in);
				fclose(in);
				q = line;
				while (*q != '\0') {
					if (*q == '\n') *q = '\0';
					q++;
				}
			} else {
				read_x11vnc_remote_prop(1);
				strncpy(line, x11vnc_remote_str,
				    X11VNC_REMOTE_MAX);
			}
			if (strcmp(cmd, line)) {
				if (query || wait) {
					query_result = strdup(line);
					fprintf(stdout, "%s\n", line);
					fflush(stdout);
				}
				rc = 0;
				break;
			}
		}
		if (rc) {
			fprintf(stderr, "error: could not connect to "
			    "an x11vnc server at %s  (rc=%d)\n",
			    client_connect_file ? client_connect_file
			    : DisplayString(dpy), rc);
		}
		return rc;
	}
	return 0;
}

int do_remote_query(char *remote_cmd, char *query_cmd, int remote_sync,
    int qdefault) {
	char *rcmd = NULL, *qcmd = NULL;
	int rc = 1, direct = 0;

	if (qdefault && !query_cmd) {
		query_cmd = remote_cmd;
		remote_cmd = NULL;
	}
	if (remote_cmd && strstr(remote_cmd, "DIRECT:") == remote_cmd) {
		direct = 1;
		remote_cmd += strlen("DIRECT:");
	}
	if (query_cmd && strstr(query_cmd, "DIRECT:") == query_cmd) {
		direct = 1;
		query_cmd += strlen("DIRECT:");
	}

	if (remote_cmd) {
		rcmd = (char *) malloc(strlen(remote_cmd) + 5);
		strcpy(rcmd, "cmd=");
		strcat(rcmd, remote_cmd);
	}
	if (query_cmd) {
		qcmd = (char *) malloc(strlen(query_cmd) + 5);
		strcpy(qcmd, "qry=");
		strcat(qcmd, query_cmd);
	}
	if (direct) {
		char *res;
		if (rcmd) {
			res = process_remote_cmd(rcmd, 1);
			fprintf(stdout, "%s\n", res);
		}
		if (qcmd) {
			res = process_remote_cmd(qcmd, 1);
			fprintf(stdout, "%s\n", res);
		}
		fflush(stdout);
		return 0;
	}
	if (qdefault) {
		char *res;
		if (!qcmd) {
			return 1;
		}
		res = process_remote_cmd(qcmd, 1);
		fprintf(stdout, "%s\n", res);
		fflush(stdout);
		return 0;
	}
	
	if (rcmd && qcmd) {
		rc = send_remote_cmd(rcmd, 0, 1);
		if (rc) {
			free(rcmd);
			free(qcmd);
			return(rc);
		}
		rc = send_remote_cmd(qcmd, 1, 1);
	} else if (rcmd) {
		rc = send_remote_cmd(rcmd, 0, remote_sync);
		free(rcmd);
	} else if (qcmd) {
		rc = send_remote_cmd(qcmd, 1, 1);
		free(qcmd);
	}
	return rc;
}

static char *add_item(char *instr, char *item) {
	char *p, *str;
	int len, saw_item = 0;

	if (! instr || *instr == '\0') {
		str = strdup(item);
		return str;
	}
	len = strlen(instr) + 1 + strlen(item) + 1;
	str = (char *) malloc(len);
	str[0] = '\0';

	/* n.b. instr will be modified; caller replaces with returned string */
	p = strtok(instr, ",");
	while (p) {
		if (!strcmp(p, item)) {
			if (saw_item) {
				p = strtok(NULL, ",");
				continue;
			}
			saw_item = 1;
		} else if (*p == '\0') {
			p = strtok(NULL, ",");
			continue;
		}
		if (str[0]) {
			strcat(str, ",");
		}
		strcat(str, p);
		p = strtok(NULL, ",");
	}
	if (! saw_item) {
		if (str[0]) {
			strcat(str, ",");
		}
		strcat(str, item);
	}
	return str;
}

static char *delete_item(char *instr, char *item) {
	char *p, *str;
	int len;

	if (! instr || *instr == '\0') {
		str = strdup("");
		return str;
	}
	len = strlen(instr) + 1;
	str = (char *) malloc(len);
	str[0] = '\0';

	/* n.b. instr will be modified; caller replaces with returned string */
	p = strtok(instr, ",");
	while (p) {
		if (!strcmp(p, item) || *p == '\0') {
			p = strtok(NULL, ",");
			continue;
		}
		if (str[0]) {
			strcat(str, ",");
		}
		strcat(str, p);
		p = strtok(NULL, ",");
	}
	return str;
}

static void if_8bpp_do_new_fb(void) {
	if (bpp == 8) {
		do_new_fb(0);
	} else {
		rfbLog("  bpp(%d) is not 8bpp, not resetting fb\n", bpp);
	}
}

void check_black_fb(void) {
	if (!screen) {
		return;
	}
	if (new_fb_size_clients(screen) != client_count) {
		rfbLog("trying to send a black fb for non-newfbsize"
		    " clients %d != %d\n", client_count,
		    new_fb_size_clients(screen));
		push_black_screen(4);
	}
}

int check_httpdir(void) {
	if (http_dir && http_dir[0] != '\0') {
		return 1;
	} else {
		char *prog = NULL, *httpdir, *q;
		struct stat sbuf;
		int len;

		rfbLog("check_httpdir: trying to guess httpdir... %s\n", program_name);
		if (program_name[0] == '/') {
			prog = strdup(program_name);
		} else {
			char cwd[1024];
			getcwd(cwd, 1024);
			len = strlen(cwd) + 1 + strlen(program_name) + 1;
			prog = (char *) malloc(len);
			snprintf(prog, len, "%s/%s", cwd, program_name);
			if (stat(prog, &sbuf) != 0) {
				char *path = strdup(getenv("PATH"));
				char *p, *base;
				base = strrchr(program_name, '/');
				if (base) {
					base++;
				} else {
					base = program_name;
				}
				
				p = strtok(path, ":");
				while(p) {
					if (prog) {
						free(prog);
						prog = NULL;
					}
					len = strlen(p) + 1 + strlen(base) + 1;
					prog = (char *) malloc(len);
					snprintf(prog, len, "%s/%s", p, base);
					if (stat(prog, &sbuf) == 0) {
						break;
					}
					p = strtok(NULL, ":");
				}
				free(path);
			}
		}
		/*
		 * /path/to/bin/x11vnc
		 * /path/to/bin/../share/x11vnc/classes
		 *                    12345678901234567
		 * /path/to/bin/../share/x11vnc/classes/ssl
		 *                    123456789012345678901
		 *                                        21
		 */
		if ((q = strrchr(prog, '/')) == NULL) {
			rfbLog("check_httpdir: bad program path: %s\n", prog);
			free(prog);
			rfbLog("check_httpdir: *HTTP disabled*  Use -httpdir path\n");
			return 0;
		}

		len = strlen(prog) + 21 + 1;
		*q = '\0';
		httpdir = (char *) malloc(len);
		if (use_stunnel && http_ssl) {
			snprintf(httpdir, len, "%s/../share/x11vnc/classes/ssl", prog);
		} else if (!enc_str && (use_openssl || use_stunnel || http_ssl)) {
			snprintf(httpdir, len, "%s/../share/x11vnc/classes/ssl", prog);
		} else {
			snprintf(httpdir, len, "%s/../share/x11vnc/classes", prog);
		}
		if (stat(httpdir, &sbuf) != 0) {
			if (use_stunnel && http_ssl) {
				snprintf(httpdir, len, "%s/../classes/ssl", prog);
			} else if (!enc_str && (use_openssl || use_stunnel || http_ssl)) {
				snprintf(httpdir, len, "%s/../classes/ssl", prog);
			} else {
				snprintf(httpdir, len, "%s/../classes", prog);
			}
		}
		free(prog);

		if (stat(httpdir, &sbuf) == 0) {
			/* good enough for me */
			rfbLog("check_httpdir: guessed directory:\n");
			rfbLog("   %s\n", httpdir);
			http_dir = httpdir;
			return 1;
		} else {
			/* try some hardwires: */
			int i;
			char **use;
			char *list[] = {
				"/usr/local/share/x11vnc/classes",
				"/usr/share/x11vnc/classes",
				NULL
			};
			char *ssllist[] = {
				"/usr/local/share/x11vnc/classes/ssl",
				"/usr/share/x11vnc/classes/ssl",
				NULL
			};
			if (use_stunnel && http_ssl) {
				use = ssllist;
			} else if (!enc_str && (use_openssl || use_stunnel || http_ssl)) {
				use = ssllist;
			} else {
				use = list;
			}
			i = 0;
			while (use[i] != NULL) {
				if (stat(use[i], &sbuf) == 0) {
					http_dir = strdup(use[i]);	
					return 1;
				}
				i++;
			}

			rfbLog("check_httpdir: bad guess:\n");
			rfbLog("   %s\n", httpdir);
			rfbLog("check_httpdir: *HTTP disabled*  Use -httpdir path\n");
			return 0;
		}
	}
}

static void rfb_http_init_sockets(void) {
	in_addr_t iface;
	if (!screen) {
		return;
	}
	iface = screen->listenInterface;
	if (getenv("X11VNC_HTTP_LISTEN_LOCALHOST")) {
		rfbLog("http_connections: HTTP listen on localhost only. (not HTTPS)\n");
		screen->listenInterface = htonl(INADDR_LOOPBACK);
	}
	rfbHttpInitSockets(screen);
	screen->listenInterface = iface;
}

void http_connections(int on) {
	if (!screen) {
		return;
	}
	if (on) {
		rfbLog("http_connections: turning on http service.\n");

		if (inetd && use_openssl) {
			/*
			 * try to work around rapid fire https requests
			 * in inetd mode... ugh.
			 */
			if (screen->httpPort == 0) {
				int port = find_free_port(5800, 5850);
				if (port) {
					/* mutex */
					screen->httpPort = port;
				}
			}
		}
		screen->httpInitDone = FALSE;
		if (check_httpdir()) {
			screen->httpDir = http_dir;
			rfb_http_init_sockets();
			if (screen->httpPort != 0 && screen->httpListenSock < 0) {
				rfbLog("http_connections: failed to listen on http port: %d\n", screen->httpPort);
				clean_up_exit(1);
			}
		}
	} else {
		rfbLog("http_connections: turning off http service.\n");
		if (screen->httpListenSock > -1) {
			close(screen->httpListenSock);
		}
		screen->httpListenSock = -1;
		screen->httpDir = NULL;
	}
}

static void reset_httpport(int old, int new) {
	int hp = new;
	if (hp < 0) {
		rfbLog("reset_httpport: invalid httpport: %d\n", hp);
	} else if (hp == old) {
		rfbLog("reset_httpport: unchanged httpport: %d\n", hp);
	} else if (inetd) {
		rfbLog("reset_httpport: cannot set httpport: %d"
		    " in inetd.\n", hp);
	} else if (screen) {
		/* mutex */
		screen->httpPort = hp;
		screen->httpInitDone = FALSE;
		if (screen->httpListenSock > -1) {
			close(screen->httpListenSock);
		}
		rfbLog("reset_httpport: setting httpport %d -> %d.\n",
		    old == -1 ? hp : old, hp);
		rfb_http_init_sockets();
		if (screen->httpPort != 0 && screen->httpListenSock < 0) {
			rfbLog("reset_httpport: failed to listen on http port: %d\n", screen->httpPort);
		}
	}
}

static void reset_rfbport(int old, int new)  {
	int rp = new;
	if (rp < 0) {
		rfbLog("reset_rfbport: invalid rfbport: %d\n", rp);
	} else if (rp == old) {
		rfbLog("reset_rfbport: unchanged rfbport: %d\n", rp);
	} else if (inetd) {
		rfbLog("reset_rfbport: cannot set rfbport: %d"
		    " in inetd.\n", rp);
	} else if (screen) {
		rfbClientIteratorPtr iter;
		rfbClientPtr cl;
		int maxfd;
		/* mutex */
		if (rp == 0) {
			screen->autoPort = TRUE;
		} else {
			screen->autoPort = FALSE;
		}
		screen->port = rp;
		screen->socketState = RFB_SOCKET_INIT;

		if (screen->listenSock > -1) {
			close(screen->listenSock);
		}

		rfbLog("reset_rfbport: setting rfbport %d -> %d.\n",
		    old == -1 ? rp : old, rp);
		rfbInitSockets(screen);

		maxfd = screen->maxFd;
		if (screen->udpSock > 0 && screen->udpSock > maxfd) {
			maxfd = screen->udpSock;
		}
		iter = rfbGetClientIterator(screen);
		while( (cl = rfbClientIteratorNext(iter)) ) {
			if (cl->sock > -1) {
				FD_SET(cl->sock, &(screen->allFds));
				if (cl->sock > maxfd) {
					maxfd = cl->sock;
				}
			}
		}
		rfbReleaseClientIterator(iter);

		screen->maxFd = maxfd;

		set_vnc_desktop_name();
	}
}

/*
 * Do some sanity checking of the permissions on the XAUTHORITY and the
 * -connect file.  This is -privremote.  What should be done is check
 * for an empty host access list, currently we lazily do not bring in
 * libXau yet.
 */
int remote_control_access_ok(void) {
#if NO_X11
	return 0;
#else
	struct stat sbuf;

	if (client_connect_file) {
		if (stat(client_connect_file, &sbuf) == 0) {
			if (sbuf.st_mode & S_IWOTH) {
				rfbLog("connect file is writable by others.\n");
				rfbLog("   %s\n", client_connect_file);
				return 0;
			}
			if (sbuf.st_mode & S_IWGRP) {
				rfbLog("connect file is writable by group.\n");
				rfbLog("   %s\n", client_connect_file);
				return 0;
			}
		}
	}

	if (dpy) {
		char tmp[1000];
		char *home, *xauth;
		char *dpy_str = DisplayString(dpy);
		Display *dpy2;
		XHostAddress *xha;
		Bool enabled;
		int n;

		home = get_home_dir();
		if (getenv("XAUTHORITY") != NULL) {
			xauth = getenv("XAUTHORITY");
		} else if (home) {
			int len = 1000 - strlen("/.Xauthority") - 1;
			strncpy(tmp, home, len); 
			strcat(tmp, "/.Xauthority");
			xauth = tmp;
		} else {
			rfbLog("cannot determine default XAUTHORITY.\n");
			return 0;
		}
		if (home) {
			free(home);
		}
		if (stat(xauth, &sbuf) == 0) {
			if (sbuf.st_mode & S_IWOTH) {
				rfbLog("XAUTHORITY is writable by others!!\n");
				rfbLog("   %s\n", xauth);
				return 0;
			}
			if (sbuf.st_mode & S_IWGRP) {
				rfbLog("XAUTHORITY is writable by group!!\n");
				rfbLog("   %s\n", xauth);
				return 0;
			}
			if (sbuf.st_mode & S_IROTH) {
				rfbLog("XAUTHORITY is readable by others.\n");
				rfbLog("   %s\n", xauth);
				return 0;
			}
			if (sbuf.st_mode & S_IRGRP) {
				rfbLog("XAUTHORITY is readable by group.\n");
				rfbLog("   %s\n", xauth);
				return 0;
			}
		}

		X_LOCK;
		xha = XListHosts(dpy, &n, &enabled);
		X_UNLOCK;
		if (! enabled) {
			rfbLog("X access control is disabled, X clients can\n");
			rfbLog("   connect from any host.  Run 'xhost -'\n");
			return 0;
		}
		if (xha) {
			int i;
			rfbLog("The following hosts can connect w/o X11 "
			    "auth:\n");
			for (i=0; i<n; i++) {
				if (xha[i].family == FamilyInternet) {
					char *str = raw2host(xha[i].address,
					    xha[i].length);
					char *ip = raw2ip(xha[i].address);
					rfbLog("  %s/%s\n", str, ip);
					free(str);
					free(ip);
				} else {
					rfbLog("  unknown-%d\n", i+1);
				}
			}
			XFree_wr(xha);
			return 0;
		}

		if (getenv("XAUTHORITY")) {
			xauth = strdup(getenv("XAUTHORITY"));
		} else {
			xauth = NULL;
		}
		set_env("XAUTHORITY", "/impossible/xauthfile");

		fprintf(stderr, "\nChecking if display %s requires "
		    "XAUTHORITY\n", dpy_str);
		fprintf(stderr, "   -- (ignore any Xlib: errors that"
		    " follow) --\n");
		dpy2 = XOpenDisplay_wr(dpy_str); 
		fflush(stderr);
		fprintf(stderr, "   -- (done checking) --\n\n");

		if (xauth) {
			set_env("XAUTHORITY", xauth);
			free(xauth);
		} else {
			xauth = getenv("XAUTHORITY");
			if (xauth) {
				*(xauth-2) = '_';	/* yow */
			}
		}
		if (dpy2) {
			rfbLog("XAUTHORITY is not required on display.\n");
			rfbLog("   %s\n", DisplayString(dpy));
			XCloseDisplay_wr(dpy2);
			dpy2 = NULL;
			return 0;
		}

	}
	return 1;
#endif	/* NO_X11 */
}

#ifdef MACOSX
void macosxCG_keycode_inject(int down, int keycode);
#endif

/*
 * Huge, ugly switch to handle all remote commands and queries
 * -remote/-R and -query/-Q.
 */
char *process_remote_cmd(char *cmd, int stringonly) {
#if REMOTE_CONTROL
	char *p = cmd;
	char *co = "";
	char buf[X11VNC_REMOTE_MAX]; 
	int bufn = X11VNC_REMOTE_MAX;
	int query = 0;
	static char *prev_cursors_mode = NULL;

	if (!query_default && !accept_remote_cmds) {
		rfbLog("remote commands disabled: %s\n", cmd);
		return NULL;
	}
	if (unixpw_in_progress) {
		rfbLog("skip remote command: %s unixpw_in_progress.\n", cmd);
		return NULL;
	}

	if (!query_default && priv_remote) {
		if (! remote_control_access_ok()) {
			rfbLog("** Disabling remote commands in -privremote "
			    "mode.\n");
			accept_remote_cmds = 0;
			return NULL;
		}
	}


	strcpy(buf, "");
	if (strstr(cmd, "cmd=") == cmd) {
		p += strlen("cmd=");
		if (strstr(p, "script:") == p) {
			char *s, *q, **pieces, tmp[1024];
			int k = 0, n = 0, dp = 1;

			p += strlen("script:");

			if (strstr(p, "file=") == p) {
				FILE *f;
				struct stat sbuf;

				p += strlen("file=");

				rfbLog("reading script from file '%s'\n", p);

				if (stat(p, &sbuf) != 0) {
					rfbLogPerror("stat");
					return NULL;
				}

				f = fopen(p, "r");
				if (f == NULL) {
					rfbLogPerror("fopen");
					return NULL;
				}

				p = (char *) calloc(sbuf.st_size + 1, 1);
				dp = 0;
				while (fgets(tmp, 1024, f) != NULL) {
					char *c = strchr(tmp, '#');
					if (c) *c = '\0';
					if (strlen(p) + strlen(tmp) > (size_t) sbuf.st_size) {
						break;
					}
					strcat(p, tmp);
				}
				fclose(f);
			}

			pieces = (char **) malloc(strlen(p) * sizeof(char *));
			if (dp) {
				s = strdup(p);
			} else {
				s = p;
			}
			q = strtok(s, ";"); 

			while (q) {
				char *t = lblanks(q);
				if (strstr(t, "cmd=") != t && strstr(t, "qry=") != t) {
					strcpy(tmp, "cmd=");
				} else {
					strcpy(tmp, "");
				}
				strncat(tmp, t, 1000);
				pieces[n] = strdup(tmp);
				n++;
				q = strtok(NULL, ";");
			}
			free(s);

			for (k=0; k < n; k++) {
				char *c = pieces[k];
				char *t = c + strlen(c) - 1;	/* shortest is "cmd=" */
				while (isspace((unsigned char) (*t))) {
					*t = '\0';
					if (t <= c) break;
					t--;
				}
				if (k < n - 1) {
					process_remote_cmd(c, 1);
				} else {
					process_remote_cmd(c, 0);
				}
			}
			for (k=0; k<n; k++) {
				free(pieces[k]);
			}
			free(pieces);
			return NULL;
		}
	} else if (strstr(cmd, "qry=") == cmd) {
		query = 1;
		if (strchr(cmd, ',')) {
			/* comma separated batch mode */
			char *s, *q, *res, **pieces, tmp[1024];
			int k = 0, n = 0;

			pieces = (char **) malloc(strlen(cmd) * sizeof(char *));
			s = strdup(cmd + strlen("qry="));
			q = strtok(s, ","); 

			while (q) {
				strcpy(tmp, "qry=");
				strncat(tmp, q, 1000);
				pieces[n] = strdup(tmp);
				n++;
				q = strtok(NULL, ",");
			}
			free(s);

			strcpy(buf, "");
			for (k=0; k < n; k++) {
				res = process_remote_cmd(pieces[k], 1);
				if (res && strlen(buf)+strlen(res)
				    >= X11VNC_REMOTE_MAX - 1) {
					rfbLog("overflow in process_remote_cmd:"
					    " %s -- %s\n", buf, res);
					free(res);
					break;
				}
				if (res) {
					strcat(buf, res);
					free(res);
				}
				if (k < n - 1) {
					strcat(buf, ",");
				}
			}
			for (k=0; k<n; k++) {
				free(pieces[k]);
			}
			free(pieces);
			goto qry;
		}
		p += strlen("qry=");
	} else {
		rfbLog("ignoring malformed command: %s\n", cmd);
		goto done;
	}

	/* allow var=val usage */
	if (!strchr(p, ':')) {
		char *q = strchr(p, '=');
		if (q) *q = ':';
	}

	/* always call like: COLON_CHECK("foobar:") */
#define COLON_CHECK(str) \
	if (strstr(p, str) != p) { \
		co = ":"; \
		if (! query) { \
			goto done; \
		} \
	} else { \
		char *q = strchr(p, ':'); \
		if (query && q != NULL) { \
			*(q+1) = '\0'; \
		} \
	}

#define NOTAPP \
	if (query) { \
		if (strchr(p, ':')) { \
			snprintf(buf, bufn, "ans=%sN/A", p); \
		} else { \
			snprintf(buf, bufn, "ans=%s:N/A", p); \
		} \
		goto qry; \
	}

#define NOTAPPRO \
	if (query) { \
		if (strchr(p, ':')) { \
			snprintf(buf, bufn, "aro=%sN/A", p); \
		} else { \
			snprintf(buf, bufn, "aro=%s:N/A", p); \
		} \
		goto qry; \
	}

/*
 * Maybe add: passwdfile logfile bg rfbauth passwd...
 */
	if (!strcmp(p, "")) {	/* skip-cmd-list */
		NOTAPP
		rfbLog("remote_cmd: empty command.\n");
		goto done;
	}
	if (strstr(p, "CR:") == p) {	/* skip-cmd-list */
		/* CR:WxH+X+Y,dx,dy */
		int w, h, x, y, dx, dy;
		NOTAPP
		if (sscanf(p+3, "%dx%d+%d+%d,%d,%d", &w, &h, &x, &y, &dx, &dy) == 6) {
			sraRegionPtr r;
			rfbLog("rfbDoCopyRect(screen, %d, %d, %d, %d, %d, %d)\n", x, y, x+w, y+h, dx, dy);
			r = sraRgnCreateRect(x, y, x+w, y+h);
			do_copyregion(r, dx, dy, 0);
			fb_push();
			sraRgnDestroy(r);
			rfbLog("did\n");
		} else {
			rfbLog("remote_cmd: bad CR string: %s\n", p);
		}
		goto done;
	}
	if (!strcmp(p, "stop") || !strcmp(p, "quit") ||
	    !strcmp(p, "exit") || !strcmp(p, "shutdown")) {
		NOTAPP
		if (client_connect_file) {
			FILE *in = fopen(client_connect_file, "w");
			if (in) {
				fprintf(in, "cmd=noop\n");
				fclose(in);
			}
		}
		rfbLog("remote_cmd: setting shut_down flag\n");
		shut_down = 1;
		close_all_clients();
		goto done;
	}
	if (!strcmp(p, "ping")
	    || strstr(p, "ping:") == p) { /* skip-cmd-list */
		query = 1;
		if (rfb_desktop_name) {
			snprintf(buf, bufn, "ans=%s:%s", p, rfb_desktop_name);
		} else {
			snprintf(buf, bufn, "ans=%s:%s", p, "unknown");
		}
		goto qry;
		goto done;
	}
	if (!strcmp(p, "resend_cutbuffer")) {
		NOTAPP
		resend_selection("cutbuffer");
		goto done;
	}
	if (!strcmp(p, "resend_clipboard")) {
		NOTAPP
		resend_selection("clipboard");
		goto done;
	}
	if (!strcmp(p, "resend_primary")) {
		NOTAPP
		resend_selection("primary");
		goto done;
	}
	if (!strcmp(p, "blacken") || !strcmp(p, "zero")) {
		NOTAPP
		push_black_screen(4);
		goto done;
	}
	if (!strcmp(p, "refresh")) {
		NOTAPP
		refresh_screen(1);
		goto done;
	}
	if (!strcmp(p, "reset")) {
		NOTAPP
		do_new_fb(1);
		goto done;
	}
	if (strstr(p, "zero:") == p) { /* skip-cmd-list */
		int x1, y1, x2, y2;
		NOTAPP
		p += strlen("zero:");
		if (sscanf(p, "%d,%d,%d,%d", &x1, &y1, &x2, &y2) == 4)  {
			int mark = 1;
			rfbLog("zeroing rect: %s\n", p);
			if (x1 < 0 || x2 < 0) {
				x1 = nabs(x1);
				x2 = nabs(x2);
				mark = 0;	/* hack for testing */
			}

			zero_fb(x1, y1, x2, y2);
			if (mark) {
				mark_rect_as_modified(x1, y1, x2, y2, 0);
			}
			push_sleep(4);
		}
		goto done;
	}
	if (strstr(p, "damagefb:") == p) { /* skip-cmd-list */
		int delay;
		NOTAPP
		p += strlen("damagefb:");
		if (sscanf(p, "%d", &delay) == 1)  {
			rfbLog("damaging client fb's for %d secs "
			    "(by not marking rects.)\n", delay);
			damage_time = time(NULL);
			damage_delay = delay;
		}
		goto done;
	}
	if (strstr(p, "close") == p) {
		NOTAPP
		COLON_CHECK("close:")
		p += strlen("close:");
		close_clients(p);
		goto done;
	}
	if (strstr(p, "disconnect") == p) {
		NOTAPP
		COLON_CHECK("disconnect:")
		p += strlen("disconnect:");
		close_clients(p);
		goto done;
	}
	if (strstr(p, "id_cmd") == p) {
		NOTAPP
		COLON_CHECK("id_cmd:")
		p += strlen("id_cmd:");
		id_cmd(p);
		goto done;
	}
	if (strstr(p, "id") == p) {
		int ok = 0;
		Window twin;
		COLON_CHECK("id:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s0x%lx", p, co,
			    rootshift ? 0 : subwin);
			goto qry;
		}
		p += strlen("id:");
		if (*p == '\0' || !strcmp("root", p)) { /* skip-cmd-list */
			/* back to root win */
			twin = 0x0;
			ok = 1;
		} else if (!strcmp("pick", p)) {
			twin = 0x0;
			if (safe_remote_only) {
				rfbLog("unsafe: '-id pick'\n");
			} else if (pick_windowid(&twin)) {
				ok = 1;
			}
		} else if (! scan_hexdec(p, &twin)) {
			rfbLog("-id: skipping incorrect hex/dec number:"
			    " %s\n", p);
		} else {
			ok = 1;
		}
		if (ok) {
			X_LOCK;
			if (twin && ! valid_window(twin, NULL, 0)) {
				rfbLog("skipping invalid sub-window: 0x%lx\n", twin);
				X_UNLOCK;
			} else {
				subwin = twin;
				rootshift = 0;
				X_UNLOCK;
				check_black_fb();
				do_new_fb(1);
			}
		}
		goto done;
	}
	if (strstr(p, "sid") == p) {
		int ok = 0;
		Window twin;
		COLON_CHECK("sid:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s0x%lx", p, co,
			    !rootshift ? 0 : subwin);
			goto qry;
		}
		p += strlen("sid:");
		if (*p == '\0' || !strcmp("root", p)) { /* skip-cmd-list */
			/* back to root win */
			twin = 0x0;
			ok = 1;
		} else if (!strcmp("pick", p)) {
			twin = 0x0;
			if (safe_remote_only) {
				rfbLog("unsafe: '-sid pick'\n");
			} else if (pick_windowid(&twin)) {
				ok = 1;
			}
		} else if (! scan_hexdec(p, &twin)) {
			rfbLog("-sid: skipping incorrect hex/dec number: %s\n", p);
		} else {
			ok = 1;
		}
		if (ok) {
			X_LOCK;
			if (twin && ! valid_window(twin, NULL, 0)) {
				rfbLog("skipping invalid sub-window: 0x%lx\n", twin);
				X_UNLOCK;
			} else {
				subwin = twin;
				rootshift = 1;
				X_UNLOCK;
				check_black_fb();
				do_new_fb(1);
			}
		}
		goto done;
	}
	if (strstr(p, "waitmapped") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    subwin_wait_mapped);
			goto qry;
		}
		subwin_wait_mapped = 1;
		goto done;
	}
	if (strstr(p, "nowaitmapped") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !subwin_wait_mapped);
			goto qry;
		}
		subwin_wait_mapped = 0;
		goto done;
	}
	if (!strcmp(p, "clip") ||
	    strstr(p, "clip:") == p) {	/* skip-cmd-list */
		COLON_CHECK("clip:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(clip_str));
			goto qry;
		}
		p += strlen("clip:");
		if (clip_str) free(clip_str);
		clip_str = strdup(p);

		/* OK, this requires a new fb... */
		do_new_fb(1);
		goto done;
	}
	if (!strcmp(p, "flashcmap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, flash_cmap);
			goto qry;
		}
		rfbLog("remote_cmd: turning on flashcmap mode.\n");
		flash_cmap = 1;
		goto done;
	}
	if (!strcmp(p, "noflashcmap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !flash_cmap);
			goto qry;
		}
		rfbLog("remote_cmd: turning off flashcmap mode.\n");
		flash_cmap = 0;
		goto done;
	}
	if (strstr(p, "shiftcmap") == p) {
		COLON_CHECK("shiftcmap:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, shift_cmap);
			goto qry;
		}
		p += strlen("shiftcmap:");
		shift_cmap = atoi(p);
		rfbLog("remote_cmd: set -shiftcmap %d\n", shift_cmap);
		do_new_fb(1);
		goto done;
	}
	if (!strcmp(p, "truecolor")) {
		int orig = force_indexed_color;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !force_indexed_color);
			goto qry;
		}
		rfbLog("remote_cmd: turning off notruecolor mode.\n");
		force_indexed_color = 0;
		if (orig != force_indexed_color) {
			if_8bpp_do_new_fb();
		}
		goto done;
	}
	if (!strcmp(p, "notruecolor")) {
		int orig = force_indexed_color;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    force_indexed_color);
			goto qry;
		}
		rfbLog("remote_cmd: turning on notruecolor mode.\n");
		force_indexed_color = 1;
		if (orig != force_indexed_color) {
			if_8bpp_do_new_fb();
		}
		goto done;
	}
	if (!strcmp(p, "overlay")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, overlay);
			goto qry;
		}
		rfbLog("remote_cmd: turning on -overlay mode.\n");
		if (!overlay_present) {
			rfbLog("skipping: overlay extension not present.\n");
		} else if (overlay) {
			rfbLog("skipping: already in -overlay mode.\n");
		} else {
			int reset_mem = 0;
			/* here we go... */
			if (using_shm) {
				rfbLog("setting -noshm mode.\n");
				using_shm = 0;
				reset_mem = 1;
			}
			overlay = 1;
			do_new_fb(reset_mem);
		}
		goto done;
	}
	if (!strcmp(p, "nooverlay")) {
		int orig = overlay;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !overlay);
			goto qry;
		}
		rfbLog("remote_cmd: turning off overlay mode\n");
		overlay = 0;
		if (!overlay_present) {
			rfbLog("warning: overlay extension not present.\n");
		} else if (!orig) {
			rfbLog("skipping: already not in -overlay mode.\n");
		} else {
			/* here we go... */
			do_new_fb(0);
		}
		goto done;
	}
	if (!strcmp(p, "overlay_cursor") ||
	    !strcmp(p, "overlay_yescursor") ||
	    !strcmp(p, "nooverlay_nocursor")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, overlay_cursor);
			goto qry;
		}
		rfbLog("remote_cmd: turning on overlay_cursor mode.\n");
		overlay_cursor = 1;
		if (!overlay_present) {
			rfbLog("warning: overlay extension not present.\n");
		} else if (!overlay) {
			rfbLog("warning: not in -overlay mode.\n");
		} else {
			rfbLog("You may want to run -R noshow_cursor or\n");
			rfbLog(" -R cursor:none to disable any extra "
			    "cursors.\n");
		}
		goto done;
	}
	if (!strcmp(p, "nooverlay_cursor") ||
	    !strcmp(p, "nooverlay_yescursor") ||
	    !strcmp(p, "overlay_nocursor")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !overlay_cursor);
			goto qry;
		}
		rfbLog("remote_cmd: turning off overlay_cursor mode\n");
		overlay_cursor = 0;
		if (!overlay_present) {
			rfbLog("warning: overlay extension not present.\n");
		} else if (!overlay) {
			rfbLog("warning: not in -overlay mode.\n");
		} else {
			rfbLog("You may want to run -R show_cursor or\n");
			rfbLog(" -R cursor:... to re-enable any cursors.\n");
		}
		goto done;
	}
	if (!strcmp(p, "8to24")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, cmap8to24);
			goto qry;
		}
		if (overlay) {
			rfbLog("disabling -overlay in -8to24 mode.\n");
			overlay = 0;
		}
		rfbLog("remote_cmd: turning on -8to24 mode.\n");
		cmap8to24 = 1;
		if (overlay) {
			rfbLog("disabling -overlay in -8to24 mode.\n");
			overlay = 0;
		}
		do_new_fb(0);
		goto done;
	}
	if (!strcmp(p, "no8to24")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !cmap8to24);
			goto qry;
		}
		rfbLog("remote_cmd: turning off -8to24 mode.\n");
		cmap8to24 = 0;
		do_new_fb(0);
		goto done;
	}
	if (strstr(p, "8to24_opts") == p) {
		COLON_CHECK("8to24_opts:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(cmap8to24_str));
			goto qry;
		}
		p += strlen("8to24_opts:");
		if (cmap8to24_str) {
			free(cmap8to24_str);
		}
		cmap8to24_str = strdup(p);
		if (*p == '\0') {
			cmap8to24 = 0;
		} else {
			cmap8to24 = 1;
		}
		rfbLog("remote_cmd: set cmap8to24_str to: %s\n", cmap8to24_str);
		do_new_fb(0);
		goto done;
	}
	if (!strcmp(p, "24to32")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, xform24to32);
			goto qry;
		}
		rfbLog("remote_cmd: turning on -24to32 mode.\n");
		xform24to32 = 1;
		do_new_fb(1);
		goto done;
	}
	if (!strcmp(p, "no24to32")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !xform24to32);
			goto qry;
		}
		rfbLog("remote_cmd: turning off -24to32 mode.\n");
		if (set_visual_str_to_something) {
			if (visual_str) {
				rfbLog("unsetting: %d %d/%d\n", visual_str,
				    (int) visual_id, visual_depth);
				free(visual_str);
			}
			visual_str = NULL;
			visual_id = (VisualID) 0;
			visual_depth = 0;
		}
		xform24to32 = 0;
		do_new_fb(1);
		goto done;
	}
	if (strstr(p, "visual") == p) {
		COLON_CHECK("visual:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(visual_str));
			goto qry;
		}
		p += strlen("visual:");
		if (visual_str) free(visual_str);
		visual_str = strdup(p);

		/* OK, this requires a new fb... */
		do_new_fb(0);
		goto done;
	}
	if (!strcmp(p, "scale") ||
		    strstr(p, "scale:") == p) {	/* skip-cmd-list */
		COLON_CHECK("scale:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(scale_str));
			goto qry;
		}
		p += strlen("scale:");
		if (scale_str) free(scale_str);
		scale_str = strdup(p);

		/* OK, this requires a new fb... */
		check_black_fb();
		do_new_fb(0);
		goto done;
	}
	if (!strcmp(p, "scale_cursor") ||
		    strstr(p, "scale_cursor:") == p) {	/* skip-cmd-list */
		COLON_CHECK("scale_cursor:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(scale_cursor_str));
			goto qry;
		}
		p += strlen("scale_cursor:");
		if (scale_cursor_str) free(scale_cursor_str);
		if (*p == '\0') {
			scale_cursor_str = NULL;
		} else {
			scale_cursor_str = strdup(p);
		}
		setup_cursors_and_push();
		goto done;
	}
	if (!strcmp(p, "viewonly")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, view_only);
			goto qry;
		}
		rfbLog("remote_cmd: enable viewonly mode.\n");
		view_only = 1;
		goto done;
	}
	if (!strcmp(p, "noviewonly")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !view_only);
			goto qry;
		}
		rfbLog("remote_cmd: disable viewonly mode.\n");
		view_only = 0;
		if (raw_fb) set_raw_fb_params(0);
		goto done;
	}
	if (!strcmp(p, "shared")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, shared); goto qry;
		}
		rfbLog("remote_cmd: enable sharing.\n");
		shared = 1;
		if (screen) {
			/* mutex */
			screen->alwaysShared = TRUE;
			screen->neverShared = FALSE;
		}
		goto done;
	}
	if (!strcmp(p, "noshared")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !shared); goto qry;
		}
		rfbLog("remote_cmd: disable sharing.\n");
		shared = 0;
		if (screen) {
			/* mutex */
			screen->alwaysShared = FALSE;
			screen->neverShared = TRUE;
		}
		goto done;
	}
	if (!strcmp(p, "forever")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, 1-connect_once);
			goto qry;
		}
		rfbLog("remote_cmd: enable -forever mode.\n");
		connect_once = 0;
		goto done;
	}
	if (!strcmp(p, "noforever") || !strcmp(p, "once")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, connect_once);
			goto qry;
		}
		rfbLog("remote_cmd: disable -forever mode.\n");
		connect_once = 1;
		goto done;
	}
	if (strstr(p, "timeout") == p) {
		int to;
		COLON_CHECK("timeout:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    first_conn_timeout);
			goto qry;
		}
		p += strlen("timeout:");
		to = atoi(p);
		if (to > 0 ) {
			to = -to;
		}
		first_conn_timeout = to;
		rfbLog("remote_cmd: set -timeout to %d\n", -to);
		goto done;
	}
	if (!strcmp(p, "tightfilexfer")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, tightfilexfer);
			goto qry;
		}
#ifdef LIBVNCSERVER_WITH_TIGHTVNC_FILETRANSFER
		if (! tightfilexfer) {
			rfbLog("remote_cmd: enabling -tightfilexfer for *NEW* clients.\n");
			tightfilexfer = 1;
			rfbLog("rfbRegisterTightVNCFileTransferExtension: 4\n");
			rfbRegisterTightVNCFileTransferExtension();
		}
#else
		rfbLog("remote_cmd: -tightfilexfer not supported in this binary.\n");
#endif
		goto done;
	}
	if (!strcmp(p, "notightfilexfer")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !tightfilexfer);
			goto qry;
		}
#ifdef LIBVNCSERVER_WITH_TIGHTVNC_FILETRANSFER
		if (tightfilexfer) {
			rfbLog("remote_cmd: disabling -tightfilexfer for *NEW* clients.\n");
			tightfilexfer = 0;
			rfbLog("rfbUnregisterTightVNCFileTransferExtension: 2\n");
			rfbUnregisterTightVNCFileTransferExtension();
		}
#else
		rfbLog("remote_cmd: -tightfilexfer not supported in this binary.\n");
#endif
		goto done;
	}
	if (!strcmp(p, "ultrafilexfer")) {
		if (query) {
			if (screen) {
				snprintf(buf, bufn, "ans=%s:%d", p, screen->permitFileTransfer == TRUE);
			} else {
				snprintf(buf, bufn, "ans=%s:%d", p, 0);
			}
			goto qry;
		}
		if (! screen->permitFileTransfer) {
			rfbLog("remote_cmd: enabling -ultrafilexfer for clients.\n");
			/* mutex */
			screen->permitFileTransfer = TRUE;
		}
		goto done;
	}
	if (!strcmp(p, "noultrafilexfer")) {
		if (query) {
			if (screen) {
				snprintf(buf, bufn, "ans=%s:%d", p, screen->permitFileTransfer == FALSE);
			} else {
				snprintf(buf, bufn, "ans=%s:%d", p, 1);
			}
			goto qry;
		}
		if (screen->permitFileTransfer) {
			rfbLog("remote_cmd: disabling -ultrafilexfer for clients.\n");
			/* mutex */
			screen->permitFileTransfer = FALSE;
		}
		goto done;
	}
	if (strstr(p, "rfbversion") == p) {
		int maj, min;
		COLON_CHECK("rfbversion:")
		if (query) {
			if (screen) {
				snprintf(buf, bufn, "ans=%s:%d.%d", p, screen->protocolMajorVersion, screen->protocolMinorVersion);
			} else {
				snprintf(buf, bufn, "ans=%s:%d.%d", p, 3, 8);
			}
			goto qry;
		}
		p += strlen("rfbversion:");

		if (sscanf(p, "%d.%d", &maj, &min) == 2) {
			/* mutex */
			screen->protocolMajorVersion = maj;
			screen->protocolMinorVersion = min;
			rfbLog("remote_cmd: set rfbversion to: %d.%d\n", maj, min);
		} else {
			rfbLog("remote_cmd: invalid rfbversion: %s\n", p);
		}
		goto done;
	}
	if (!strcmp(p, "deny") || !strcmp(p, "lock")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, deny_all);
			goto qry;
		}
		rfbLog("remote_cmd: denying new connections.\n");
		deny_all = 1;
		goto done;
	}
	if (!strcmp(p, "nodeny") || !strcmp(p, "unlock")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !deny_all);
			goto qry;
		}
		rfbLog("remote_cmd: allowing new connections.\n");
		deny_all = 0;
		goto done;
	}
	if (!strcmp(p, "avahi") || !strcmp(p, "mdns") || !strcmp(p, "zeroconf")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, avahi);
			goto qry;
		}
		rfbLog("remote_cmd: enable -avahi mDNS mode.\n");
		if (!avahi) {
			avahi = 1;
			avahi_initialise();
			avahi_advertise(vnc_desktop_name, this_host(),
			    screen->port);
		}
		goto done;
	}
	if (!strcmp(p, "noavahi") || !strcmp(p, "nomdns") || !strcmp(p, "nozeroconf")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !avahi);
			goto qry;
		}
		rfbLog("remote_cmd: disable -avahi mDNS mode.\n");
		if (avahi) {
			avahi = 0;
			avahi_reset();
		}
		goto done;
	}
	if (strstr(p, "connect") == p) {
		NOTAPP
		COLON_CHECK("connect:")
		p += strlen("connect:");
		/* this is a reverse connection */
		reverse_connect(p);
		goto done;
	}
	if (strstr(p, "proxy") == p) {
		COLON_CHECK("proxy:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(connect_proxy));
			goto qry;
		}
		p += strlen("proxy:");
		if (connect_proxy) {
			free(connect_proxy);
			connect_proxy = NULL;
		}
		if (!strcmp(p, "") || !strcasecmp(p, "none")) { /* skip-cmd-list */
			rfbLog("remote_cmd: disabled -proxy\n");
		} else {
			connect_proxy = strdup(p);
			rfbLog("remote_cmd: set -proxy %s\n", connect_proxy);
		}
		goto done;
	}
	if (strstr(p, "allowonce") == p) {
		COLON_CHECK("allowonce:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(allow_once));
			goto qry;
		}
		p += strlen("allowonce:");
		allow_once = strdup(p);
		rfbLog("remote_cmd: set allow_once %s\n", allow_once);
		goto done;
	}
	if (strstr(p, "allow") == p) {
		char *before, *old;
		COLON_CHECK("allow:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(allow_list));
			goto qry;
		}

		if (unixpw) {
			rfbLog("remote_cmd: cannot change allow in -unixpw\n");
			goto done;
		}
		p += strlen("allow:");
		if (allow_list && strchr(allow_list, '/')) {
			rfbLog("remote_cmd: cannot use allow:host\n");
			rfbLog("in '-allow %s' mode.\n", allow_list);
			goto done;
		}
		if (allow_list) {
			before = strdup(allow_list);
		} else {
			before = strdup("");
		}

		old = allow_list;
		if (*p == '+') {
			p++;
			allow_list = add_item(allow_list, p);
		} else if (*p == '-') {
			p++;
			allow_list = delete_item(allow_list, p);
		} else {
			allow_list = strdup(p);
		}

		if (strcmp(before, allow_list)) {
			rfbLog("remote_cmd: modified allow_list:\n");
			rfbLog(" from: \"%s\"\n", before);
			rfbLog(" to:   \"%s\"\n", allow_list);
		}
		if (old) free(old);
		free(before);
		goto done;
	}
	if (!strcmp(p, "localhost")) {
		char *before, *old;
		if (query) {
			int state = 0;
			char *s = allow_list;
			if (s && (!strcmp(s, "127.0.0.1") ||
			    !strcmp(s, "localhost"))) {
				state = 1;
			}
			snprintf(buf, bufn, "ans=%s:%d", p, state);
			goto qry;
		}
		if (allow_list) {
			before = strdup(allow_list);
		} else {
			before = strdup("");
		}
		old = allow_list;

		allow_list = strdup("127.0.0.1");

		if (strcmp(before, allow_list)) {
			rfbLog("remote_cmd: modified allow_list:\n");
			rfbLog(" from: \"%s\"\n", before);
			rfbLog(" to:   \"%s\"\n", allow_list);
		}
		if (old) free(old);
		free(before);

		if (listen_str) {
			free(listen_str);
		}
		listen_str = strdup("localhost");

		/* mutex */
		screen->listenInterface = htonl(INADDR_LOOPBACK);
		rfbLog("listening on loopback network only.\n");
		rfbLog("allow list is: '%s'\n", NONUL(allow_list));
		reset_rfbport(-1, screen->port);
		if (screen->httpListenSock > -1) {
			reset_httpport(-1, screen->httpPort);
		}
		goto done;
	}
	if (!strcmp(p, "nolocalhost")) {
		char *before, *old;
		if (query) {
			int state = 0;
			char *s = allow_list;
			if (s && (!strcmp(s, "127.0.0.1") ||
			    !strcmp(s, "localhost"))) {
				state = 1;
			}
			snprintf(buf, bufn, "ans=%s:%d", p, !state);
			goto qry;
		}
		if (unixpw) {
			rfbLog("remote_cmd: cannot change localhost in -unixpw\n");
			goto done;
		}
		if (allow_list) {
			before = strdup(allow_list);
		} else {
			before = strdup("");
		}
		old = allow_list;

		allow_list = strdup("");

		if (strcmp(before, allow_list)) {
			rfbLog("remote_cmd: modified allow_list:\n");
			rfbLog(" from: \"%s\"\n", before);
			rfbLog(" to:   \"%s\"\n", allow_list);
		}
		if (old) free(old);
		free(before);

		if (listen_str) {
			free(listen_str);
		}
		listen_str = NULL;

		/* mutex */
		screen->listenInterface = htonl(INADDR_ANY);
		rfbLog("listening on ALL network interfaces.\n");
		rfbLog("allow list is: '%s'\n", NONUL(allow_list));
		reset_rfbport(-1, screen->port);
		if (screen->httpListenSock > -1) {
			reset_httpport(-1, screen->httpPort);
		}
		goto done;
	}
	if (strstr(p, "listen") == p) {
		char *before;
		int ok, mod = 0;

		COLON_CHECK("listen:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(listen_str));
			goto qry;
		}
		if (unixpw) {
			rfbLog("remote_cmd: cannot change listen in -unixpw\n");
			goto done;
		}
		if (listen_str) {
			before = strdup(listen_str);
		} else {
			before = strdup("");
		}
		p += strlen("listen:");

		listen_str = strdup(p);

		if (strcmp(before, listen_str)) {
			rfbLog("remote_cmd: modified listen_str:\n");
			rfbLog(" from: \"%s\"\n", before);
			rfbLog(" to:   \"%s\"\n", listen_str);
			mod = 1;
		}

		ok = 1;
		/* mutex */
		if (listen_str == NULL || *listen_str == '\0' ||
		    !strcmp(listen_str, "any")) {
			screen->listenInterface = htonl(INADDR_ANY);
		} else if (!strcmp(listen_str, "localhost")) {
			screen->listenInterface = htonl(INADDR_LOOPBACK);
		} else {
			struct hostent *hp;
			in_addr_t iface = inet_addr(listen_str);
			if (iface == htonl(INADDR_NONE)) {
				if (!host_lookup) {
					ok = 0;
				} else if (!(hp = gethostbyname(listen_str))) {
					ok = 0;
				} else {
					iface = *(unsigned long *)hp->h_addr;
				}
			}
			if (ok) {
				screen->listenInterface = iface;
			}
		}

		if (ok && mod) {
			int is_loopback = 0;
			in_addr_t iface = screen->listenInterface;

			if (allow_list) {
				if (!strcmp(allow_list, "127.0.0.1") ||
				    !strcmp(allow_list, "localhost")) {
					is_loopback = 1;
				}
			}
			if (iface != htonl(INADDR_LOOPBACK)) {
			    if (is_loopback) {
				rfbLog("re-setting -allow list to all "
				   "hosts for non-loopback listening.\n");
				if (allow_list) {
					free(allow_list);
				}
				allow_list = NULL;
			    }
			} else {
			    if (!is_loopback) {
				if (allow_list) {
					free(allow_list);
				}
				rfbLog("setting -allow list to 127.0.0.1\n");
				allow_list = strdup("127.0.0.1");
			    }
			}
		}
		if (ok) {
			rfbLog("allow list is: '%s'\n", NONUL(allow_list));
			reset_rfbport(-1, screen->port);
			if (screen->httpListenSock > -1) {
				reset_httpport(-1, screen->httpPort);
			}
			free(before);
		} else {
			rfbLog("invalid listen string: %s\n", listen_str);
			free(listen_str);
			listen_str = before;
		}
		goto done;
	}
	if (!strcmp(p, "lookup")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, host_lookup);
			goto qry;
		}
		rfbLog("remote_cmd: enabling hostname lookup.\n");
		host_lookup = 1;
		goto done;
	}
	if (!strcmp(p, "nolookup")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !host_lookup);
			goto qry;
		}
		rfbLog("remote_cmd: disabling hostname lookup.\n");
		host_lookup = 0;
		goto done;
	}
	if (strstr(p, "accept") == p) {
		int doit = 1, safe = 0;
		COLON_CHECK("accept:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(accept_cmd));
			goto qry;
		}
		p += strlen("accept:");
		if (!strcmp(p, "") || strstr(p, "popup") == p) { /* skip-cmd-list */
			safe = 1;
		}
		if (safe_remote_only && ! safe) {
			rfbLog("unsafe: %s\n", p);
			doit = 0;
		}

		if (doit) {
			if (accept_cmd) free(accept_cmd);
			accept_cmd = strdup(p);
		}
		goto done;
	}
	if (strstr(p, "afteraccept") == p) {
		int safe = 0;
		COLON_CHECK("afteraccept:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(afteraccept_cmd));
			goto qry;
		}
		p += strlen("afteraccept:");
		if (!strcmp(p, "")) { /* skip-cmd-list */
			safe = 1;
		}
		if (safe_remote_only && ! safe) {
			rfbLog("unsafe: %s\n", p);
		} else {
			if (afteraccept_cmd) free(afteraccept_cmd);
			afteraccept_cmd = strdup(p);
		}
		goto done;
	}
	if (strstr(p, "gone") == p) {
		int safe = 0;
		COLON_CHECK("gone:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(gone_cmd));
			goto qry;
		}
		p += strlen("gone:");
		if (!strcmp(p, "") || strstr(p, "popup") == p) { /* skip-cmd-list */
			safe = 1;
		}
		if (safe_remote_only && ! safe) {
			rfbLog("unsafe: %s\n", p);
		} else {
			if (gone_cmd) free(gone_cmd);
			gone_cmd = strdup(p);
		}
		goto done;
	}
	if (!strcmp(p, "shm")) {
		int orig = using_shm;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, using_shm);
			goto qry;
		}
		rfbLog("remote_cmd: turning off noshm mode.\n");
		using_shm = 1;
		if (raw_fb) set_raw_fb_params(0);

		if (orig != using_shm) {
			do_new_fb(1);
		} else {
			rfbLog(" already in shm mode.\n");
		}
		goto done;
	}
	if (!strcmp(p, "noshm")) {
		int orig = using_shm;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !using_shm);
			goto qry;
		}
		rfbLog("remote_cmd: turning on noshm mode.\n");
		using_shm = 0;
		if (orig != using_shm) {
			do_new_fb(1);
		} else {
			rfbLog(" already in noshm mode.\n");
		}
		goto done;
	}
	if (!strcmp(p, "flipbyteorder")) {
		int orig = flip_byte_order;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, flip_byte_order);
			goto qry;
		}
		rfbLog("remote_cmd: turning on flipbyteorder mode.\n");
		flip_byte_order = 1;
		if (orig != flip_byte_order) {
			if (! using_shm || xform24to32) {
				do_new_fb(1);
			} else {
				rfbLog("  using shm, not resetting fb\n");
			}
		}
		goto done;
	}
	if (!strcmp(p, "noflipbyteorder")) {
		int orig = flip_byte_order;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !flip_byte_order);
			goto qry;
		}
		rfbLog("remote_cmd: turning off flipbyteorder mode.\n");
		flip_byte_order = 0;
		if (orig != flip_byte_order) {
			if (! using_shm || xform24to32) {
				do_new_fb(1);
			} else {
				rfbLog("  using shm, not resetting fb\n");
			}
		}
		goto done;
	}
	if (!strcmp(p, "onetile")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, single_copytile);
			goto qry;
		}
		rfbLog("remote_cmd: enable -onetile mode.\n");
		single_copytile = 1;
		goto done;
	}
	if (!strcmp(p, "noonetile")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !single_copytile);
			goto qry;
		}
		rfbLog("remote_cmd: disable -onetile mode.\n");
		if (tile_shm_count < ntiles_x) {
			rfbLog(" this has no effect: tile_shm_count=%d"
			    " ntiles_x=%d\n", tile_shm_count, ntiles_x);
			
		}
		single_copytile = 0;
		goto done;
	}
	if (strstr(p, "solid_color") == p) {
		/*
		 * n.b. this solid stuff perhaps should reflect
		 * safe_remote_only but at least the command names
		 * are fixed.
		 */
		char *new;
		int doit = 1;
		COLON_CHECK("solid_color:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(solid_str));
			goto qry;
		}
		p += strlen("solid_color:");
		if (*p != '\0') {
			new = strdup(p);
		} else {
			new = strdup(solid_default);
		}
		rfbLog("remote_cmd: solid %s -> %s\n", NONUL(solid_str), new);

		if (solid_str) {
			if (!strcmp(solid_str, new)) {
				doit = 0;
			}
			free(solid_str);
		}
		solid_str = new;
		use_solid_bg = 1;
		if (raw_fb && !macosx_console) set_raw_fb_params(0);

		if (doit && client_count) {
			solid_bg(0);
		}
		goto done;
	}
	if (!strcmp(p, "solid")) {
		int orig = use_solid_bg;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_solid_bg);
			goto qry;
		}
		rfbLog("remote_cmd: enable -solid mode\n");
		if (! solid_str) {
			solid_str = strdup(solid_default);
		}
		use_solid_bg = 1;
		if (raw_fb && !macosx_console) set_raw_fb_params(0);
		if (client_count && !orig) {
			solid_bg(0);
		}
		goto done;
	}
	if (!strcmp(p, "nosolid")) {
		int orig = use_solid_bg;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !use_solid_bg);
			goto qry;
		}
		rfbLog("remote_cmd: disable -solid mode\n");
		use_solid_bg = 0;
		if (client_count && orig) {
			solid_bg(1);
		}
		goto done;
	}
	if (strstr(p, "blackout") == p) {
		char *before, *old;
		COLON_CHECK("blackout:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(blackout_str));
			goto qry;
		}
		p += strlen("blackout:");
		if (blackout_str) {
			before = strdup(blackout_str);
		} else {
			before = strdup("");
		}
		old = blackout_str;
		if (*p == '+') {
			p++;
			blackout_str = add_item(blackout_str, p);
		} else if (*p == '-') {
			p++;
			blackout_str = delete_item(blackout_str, p);
		} else {
			blackout_str = strdup(p);
		}
		if (strcmp(before, blackout_str)) {
			rfbLog("remote_cmd: changing -blackout\n");
			rfbLog(" from: %s\n", before);
			rfbLog(" to:   %s\n", blackout_str);
			if (0 && !strcmp(blackout_str, "") &&
			    single_copytile_orig != single_copytile) {
				rfbLog("resetting single_copytile to: %d\n",
				    single_copytile_orig);
				single_copytile = single_copytile_orig;
			}
			initialize_blackouts_and_xinerama();
		}
		if (old) free(old);
		free(before);
		goto done;
	}
	if (!strcmp(p, "xinerama")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, xinerama);
			goto qry;
		}
		rfbLog("remote_cmd: enable xinerama mode. (if applicable).\n");
		xinerama = 1;
		initialize_blackouts_and_xinerama();
		goto done;
	}
	if (!strcmp(p, "noxinerama")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !xinerama);
			goto qry;
		}
		rfbLog("remote_cmd: disable xinerama mode. (if applicable).\n");
		xinerama = 0;
		initialize_blackouts_and_xinerama();
		goto done;
	}
	if (!strcmp(p, "xtrap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, xtrap_input);
			goto qry;
		}
		rfbLog("remote_cmd: enable xtrap input mode."
		    "(if applicable).\n");
		if (! xtrap_input) {
			xtrap_input = 1;
			disable_grabserver(dpy, 1);
		}
		goto done;
	}
	if (!strcmp(p, "noxtrap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !xtrap_input);
			goto qry;
		}
		rfbLog("remote_cmd: disable xtrap input mode."
		    "(if applicable).\n");
		if (xtrap_input) {
			xtrap_input = 0;
			disable_grabserver(dpy, 1);
		}
		goto done;
	}
	if (!strcmp(p, "xrandr")) {
		int orig = xrandr;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, xrandr); goto qry;
		}
		if (xrandr_present) {
			rfbLog("remote_cmd: enable xrandr mode.\n");
			xrandr = 1;
			if (raw_fb) set_raw_fb_params(0);
			if (! xrandr_mode) {
				xrandr_mode = strdup("default");
			}
			if (orig != xrandr) {
				initialize_xrandr();
			}
		} else {
			rfbLog("remote_cmd: XRANDR ext. not present.\n");
		}
		goto done;
	}
	if (!strcmp(p, "noxrandr")) {
		int orig = xrandr;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !xrandr); goto qry;
		}
		xrandr = 0;
		xrandr_maybe = 0;
		if (xrandr_present) {
			rfbLog("remote_cmd: disable xrandr mode.\n");
			if (orig != xrandr) {
				initialize_xrandr();
			}
		} else {
			rfbLog("remote_cmd: XRANDR ext. not present.\n");
		}
		goto done;
	}
	if (strstr(p, "xrandr_mode") == p) {
		int orig = xrandr;
		COLON_CHECK("xrandr_mode:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(xrandr_mode));
			goto qry;
		}
		p += strlen("xrandr_mode:");
		if (!strcmp("none", p)) {
			xrandr = 0;
			xrandr_maybe = 0;
		} else {
			if (known_xrandr_mode(p)) {
				if (xrandr_mode) free(xrandr_mode);
				xrandr_mode = strdup(p);
			} else {
				rfbLog("skipping unknown xrandr mode: %s\n", p);
				goto done;
			}
			xrandr = 1;
		}
		if (xrandr_present) {
			if (xrandr) {
				rfbLog("remote_cmd: enable xrandr mode.\n");
			} else {
				rfbLog("remote_cmd: disable xrandr mode.\n");
			}
			if (! xrandr_mode) {
				xrandr_mode = strdup("default");
			}
			if (orig != xrandr) {
				initialize_xrandr();
			}
		} else {
			rfbLog("remote_cmd: XRANDR ext. not present.\n");
		}
		goto done;
	}
	if (strstr(p, "rotate") == p) {
		COLON_CHECK("rotate:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(rotating_str));
			goto qry;
		}
		p += strlen("rotate:");
		if (rotating_str) free(rotating_str);
		rotating_str = strdup(p);
		rfbLog("remote_cmd: set rotate to \"%s\"\n", rotating_str);

		do_new_fb(0);
		goto done;
	}
	if (strstr(p, "padgeom") == p) {
		COLON_CHECK("padgeom:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(pad_geometry));
			goto qry;
		}
		p += strlen("padgeom:");
		if (!strcmp("force", p) || !strcmp("do",p) || !strcmp("go",p)) {
			rfbLog("remote_cmd: invoking install_padded_fb()\n");
			install_padded_fb(pad_geometry);
		} else {
			if (pad_geometry) free(pad_geometry);
			pad_geometry = strdup(p);
			rfbLog("remote_cmd: set padgeom to: %s\n",
			    pad_geometry);
		}
		goto done;
	}
	if (!strcmp(p, "quiet") || !strcmp(p, "q")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, quiet); goto qry;
		}
		rfbLog("remote_cmd: turning on quiet mode.\n");
		quiet = 1;
		goto done;
	}
	if (!strcmp(p, "noquiet")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !quiet); goto qry;
		}
		rfbLog("remote_cmd: turning off quiet mode.\n");
		quiet = 0;
		goto done;
	}
	if (!strcmp(p, "modtweak")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_modifier_tweak);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -modtweak mode.\n");
		if (! use_modifier_tweak) {
			use_modifier_tweak = 1;
			initialize_modtweak();
		}
		use_modifier_tweak = 1;
		goto done;
	}
	if (!strcmp(p, "nomodtweak")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !use_modifier_tweak);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -nomodtweak mode.\n");
		got_nomodtweak = 1;
		use_modifier_tweak = 0;
		goto done;
	}
	if (!strcmp(p, "xkb")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_xkb_modtweak);
			goto qry;
		}
		if (! xkb_present) {
			rfbLog("remote_cmd: cannot enable -xkb "
			    "modtweak mode (not supported on X display)\n");
			goto done;
		}
		rfbLog("remote_cmd: enabling -xkb modtweak mode"
		    " (if supported).\n");
		if (! use_modifier_tweak || ! use_xkb_modtweak) {
			use_modifier_tweak = 1;
			use_xkb_modtweak = 1;
			initialize_modtweak();
		}
		use_modifier_tweak = 1;
		use_xkb_modtweak = 1;
		goto done;
	}
	if (!strcmp(p, "noxkb")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !use_xkb_modtweak);
			goto qry;
		}
		if (! xkb_present) {
			rfbLog("remote_cmd: cannot disable -xkb "
			    "modtweak mode (not supported on X display)\n");
			goto done;
		}
		rfbLog("remote_cmd: disabling -xkb modtweak mode.\n");
		use_xkb_modtweak = 0;
		got_noxkb = 1;
		initialize_modtweak();
		goto done;
	}
	if (!strcmp(p, "capslock")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, watch_capslock);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -capslock mode\n");
		watch_capslock = 1;
		goto done;
	}
	if (!strcmp(p, "nocapslock")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !watch_capslock);
			goto qry;
		}
		rfbLog("remote_cmd: disabling -capslock mode\n");
		watch_capslock = 0;
		goto done;
	}
	if (!strcmp(p, "skip_lockkeys")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, skip_lockkeys);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -skip_lockkeys mode\n");
		skip_lockkeys = 1;
		goto done;
	}
	if (!strcmp(p, "noskip_lockkeys")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !skip_lockkeys);
			goto qry;
		}
		rfbLog("remote_cmd: disabling -skip_lockkeys mode\n");
		skip_lockkeys = 0;
		goto done;
	}
	if (strstr(p, "skip_keycodes") == p) {
		COLON_CHECK("skip_keycodes:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(skip_keycodes));
			goto qry;
		}
		p += strlen("skip_keycodes:");
		rfbLog("remote_cmd: setting xkb -skip_keycodes"
		    " to:\n\t'%s'\n", p);
		if (! xkb_present) {
			rfbLog("remote_cmd: warning xkb not present\n");
		} else if (! use_xkb_modtweak) {
			rfbLog("remote_cmd: turning on xkb.\n");
			use_xkb_modtweak = 1;
			if (! use_modifier_tweak) {
				rfbLog("remote_cmd: turning on modtweak.\n");
				use_modifier_tweak = 1;
			}
		}
		if (skip_keycodes) free(skip_keycodes);
		skip_keycodes = strdup(p);
		initialize_modtweak();
		goto done;
	}
	if (!strcmp(p, "sloppy_keys")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, sloppy_keys);
			goto qry;
		}
		sloppy_keys += 1;
		rfbLog("remote_cmd: set sloppy_keys to: %d\n", sloppy_keys);
		goto done;
	}
	if (!strcmp(p, "nosloppy_keys")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !sloppy_keys);
			goto qry;
		}
		sloppy_keys = 0;
		rfbLog("remote_cmd: set sloppy_keys to: %d\n", sloppy_keys);
		goto done;
	}
	if (!strcmp(p, "skip_dups")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    skip_duplicate_key_events);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -skip_dups mode\n");
		skip_duplicate_key_events = 1;
		goto done;
	}
	if (!strcmp(p, "noskip_dups")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !skip_duplicate_key_events);
			goto qry;
		}
		rfbLog("remote_cmd: disabling -skip_dups mode\n");
		skip_duplicate_key_events = 0;
		goto done;
	}
	if (!strcmp(p, "add_keysyms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, add_keysyms);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -add_keysyms mode.\n");
		add_keysyms = 1;
		goto done;
	}
	if (!strcmp(p, "noadd_keysyms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !add_keysyms);
			goto qry;
		}
		rfbLog("remote_cmd: disabling -add_keysyms mode.\n");
		add_keysyms = 0;
		goto done;
	}
	if (!strcmp(p, "clear_mods")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, clear_mods == 1);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -clear_mods mode.\n");
		clear_mods = 1;
		if (use_threads) {X_LOCK;}
		clear_modifiers(0);
		if (use_threads) {X_UNLOCK;}
		goto done;
	}
	if (!strcmp(p, "noclear_mods")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !(clear_mods == 1));
			goto qry;
		}
		rfbLog("remote_cmd: disabling -clear_mods mode.\n");
		clear_mods = 0;
		goto done;
	}
	if (!strcmp(p, "clear_keys")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    clear_mods == 2);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -clear_keys mode.\n");
		clear_mods = 2;
		if (use_threads) {X_LOCK;}
		clear_keys();
		if (use_threads) {X_UNLOCK;}
		goto done;
	}
	if (!strcmp(p, "noclear_keys")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !(clear_mods == 2));
			goto qry;
		}
		rfbLog("remote_cmd: disabling -clear_keys mode.\n");
		clear_mods = 0;
		goto done;
	}
	if (!strcmp(p, "clear_all")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    clear_mods == 3);
			goto qry;
		}
		rfbLog("remote_cmd: doing clear_all action.\n");
		clear_mods = 3;
		if (use_threads) {X_LOCK;}
		clear_keys();
		clear_locks();
		if (use_threads) {X_UNLOCK;}
		goto done;
	}
	if (!strcmp(p, "clear_locks")) {
		NOTAPP
		rfbLog("remote_cmd: doing clear_locks action.\n");
		if (use_threads) {X_LOCK;}
		clear_locks();
		if (use_threads) {X_UNLOCK;}
		goto done;
	}
	if (!strcmp(p, "keystate")) {
		int i, state[256];
		NOTAPP
		for (i=0; i<256; i++) {
			state[i] = 0;
		}
		if (use_threads) {X_LOCK;}
		get_keystate(state);
		if (use_threads) {X_UNLOCK;}
		for (i=0; i<256; i++) {
			fprintf(stderr, "keystate[%03d] %d\n", i, state[i]);
		}
		goto done;
	}
	if (strstr(p, "remap") == p) {
		char *before, *old;
		COLON_CHECK("remap:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(remap_file));
			goto qry;
		}
		p += strlen("remap:");
		if ((*p == '+' || *p == '-') && remap_file &&
		    strchr(remap_file, '/')) {
			rfbLog("remote_cmd: cannot use remap:+/-\n");
			rfbLog("in '-remap %s' mode.\n", remap_file);
			goto done;
		}
		if (remap_file) {
			before = strdup(remap_file);
		} else {
			before = strdup("");
		}
		old = remap_file;
		if (*p == '+') {
			p++;
			remap_file = add_item(remap_file, p);
		} else if (*p == '-') {
			p++;
			remap_file = delete_item(remap_file, p);
			if (! strchr(remap_file, '-')) {
				*remap_file = '\0';
			}
		} else {
			remap_file = strdup(p);
		}
		if (strcmp(before, remap_file)) {
			rfbLog("remote_cmd: changed -remap\n");
			rfbLog(" from: %s\n", before);
			rfbLog(" to:   %s\n", remap_file);
			initialize_remap(remap_file);
		}
		if (old) free(old);
		free(before);
		goto done;
	}
	if (!strcmp(p, "repeat")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !no_autorepeat);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -repeat mode.\n");
		autorepeat(1, 0);	/* restore initial setting */
		no_autorepeat = 0;
		goto done;
	}
	if (!strcmp(p, "norepeat")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, no_autorepeat);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -norepeat mode.\n");
		no_autorepeat = 1;
		if (no_repeat_countdown >= 0) {
			no_repeat_countdown = 2;
		}
		if (client_count && ! view_only) {
			autorepeat(0, 0);	/* disable if any clients */
		}
		goto done;
	}
	if (!strcmp(p, "fb")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !nofb);
			goto qry;
		}
		if (nofb) {
			rfbLog("remote_cmd: disabling nofb mode.\n");
			rfbLog("  you may need to these turn back on:\n");
			rfbLog("     xfixes, xdamage, solid, flashcmap\n");
			rfbLog("     overlay, shm, noonetile, nap, cursor\n");
			rfbLog("     cursorpos, cursorshape, bell.\n");
			nofb = 0;
			set_nofb_params(1);
			do_new_fb(1);
		}
		goto done;
	}
	if (!strcmp(p, "nofb")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, nofb);
			goto qry;
		}
		if (!nofb) {
			rfbLog("remote_cmd: enabling nofb mode.\n");
			if (main_fb) {
				push_black_screen(4);
			}
			nofb = 1;
			sound_bell = 0;
			initialize_watch_bell();
			set_nofb_params(0);
			do_new_fb(1);
		}
		goto done;
	}
	if (!strcmp(p, "bell")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, sound_bell);
			goto qry;
		}
		rfbLog("remote_cmd: enabling bell (if supported).\n");
		initialize_watch_bell();
		sound_bell = 1;
		goto done;
	}
	if (!strcmp(p, "nobell")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !sound_bell);
			goto qry;
		}
		rfbLog("remote_cmd: disabling bell.\n");
		initialize_watch_bell();
		sound_bell = 0;
		goto done;
	}
	if (!strcmp(p, "sendbell")) {
		NOTAPP
		rfbLog("remote_cmd: sendbell.\n");
		if (screen && client_count) {
			rfbSendBell(screen);
		}
		goto done;
	}
	if (!strcmp(p, "sel")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, watch_selection);
			goto qry;
		}
		rfbLog("remote_cmd: enabling watch selection+primary.\n");
		watch_selection = 1;
		watch_primary = 1;
		watch_clipboard = 1;
		goto done;
	}
	if (!strcmp(p, "nosel")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !watch_selection);
			goto qry;
		}
		rfbLog("remote_cmd: disabling watch selection+primary.\n");
		watch_selection = 0;
		watch_primary = 0;
		watch_clipboard = 0;
		goto done;
	}
	if (!strcmp(p, "primary")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, watch_primary);
			goto qry;
		}
		rfbLog("remote_cmd: enabling watch_primary.\n");
		watch_primary = 1;
		goto done;
	}
	if (!strcmp(p, "noprimary")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !watch_primary);
			goto qry;
		}
		rfbLog("remote_cmd: disabling watch_primary.\n");
		watch_primary = 0;
		goto done;
	}
	if (!strcmp(p, "setprimary")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, set_primary);
			goto qry;
		}
		rfbLog("remote_cmd: enabling set_primary.\n");
		set_primary = 1;
		goto done;
	}
	if (!strcmp(p, "nosetprimary")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !set_primary);
			goto qry;
		}
		rfbLog("remote_cmd: disabling set_primary.\n");
		set_primary = 0;
		goto done;
	}
	if (!strcmp(p, "clipboard")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, watch_clipboard);
			goto qry;
		}
		rfbLog("remote_cmd: enabling watch_clipboard.\n");
		watch_clipboard = 1;
		goto done;
	}
	if (!strcmp(p, "noclipboard")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !watch_clipboard);
			goto qry;
		}
		rfbLog("remote_cmd: disabling watch_clipboard.\n");
		watch_clipboard = 0;
		goto done;
	}
	if (!strcmp(p, "setclipboard")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, set_clipboard);
			goto qry;
		}
		rfbLog("remote_cmd: enabling set_clipboard.\n");
		set_clipboard = 1;
		goto done;
	}
	if (!strcmp(p, "nosetclipboard")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !set_clipboard);
			goto qry;
		}
		rfbLog("remote_cmd: disabling set_clipboard.\n");
		set_clipboard = 0;
		goto done;
	}
	if (strstr(p, "seldir") == p) {
		COLON_CHECK("seldir:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(sel_direction));
			goto qry;
		}
		p += strlen("seldir:");
		rfbLog("remote_cmd: setting -seldir to %s\n", p);
		if (sel_direction) free(sel_direction);
		sel_direction = strdup(p);
		goto done;
	}
	if (!strcmp(p, "set_no_cursor")) { /* skip-cmd-list */
		rfbLog("remote_cmd: calling set_no_cursor()\n");
		set_no_cursor();
		goto done;
	}
	if (!strcmp(p, "cursorshape")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    cursor_shape_updates);
			goto qry;
		}
		rfbLog("remote_cmd: turning on cursorshape mode.\n");

		set_no_cursor();
		cursor_shape_updates = 1;
		restore_cursor_shape_updates(screen);
		first_cursor();
		goto done;
	}
	if (!strcmp(p, "nocursorshape")) {
		int i, max = 5;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !cursor_shape_updates);
			goto qry;
		}
		rfbLog("remote_cmd: turning off cursorshape mode.\n");
		
		set_no_cursor();
		for (i=0; i<max; i++) {
			/* XXX: try to force empty cursor back to client */
			rfbPE(-1);
		}
		cursor_shape_updates = 0;
		disable_cursor_shape_updates(screen);
		first_cursor();
		goto done;
	}
	if (!strcmp(p, "cursorpos")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    cursor_pos_updates);
			goto qry;
		}
		rfbLog("remote_cmd: turning on cursorpos mode.\n");
		cursor_pos_updates = 1;
		goto done;
	}
	if (!strcmp(p, "nocursorpos")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !cursor_pos_updates);
			goto qry;
		}
		rfbLog("remote_cmd: turning off cursorpos mode.\n");
		cursor_pos_updates = 0;
		goto done;
	}
	if (!strcmp(p, "cursor_drag")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, cursor_drag_changes);
			goto qry;
		}
		cursor_drag_changes = 1;
		rfbLog("remote_cmd: setting cursor_drag_changes: %d.\n", cursor_drag_changes);
		goto done;
	}
	if (!strcmp(p, "nocursor_drag")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !cursor_drag_changes);
			goto qry;
		}
		cursor_drag_changes = 0;
		rfbLog("remote_cmd: setting cursor_drag_changes: %d.\n", cursor_drag_changes);
		goto done;
	}
	if (strstr(p, "cursor") == p) {
		COLON_CHECK("cursor:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(multiple_cursors_mode));
			goto qry;
		}
		p += strlen("cursor:");
		if (multiple_cursors_mode) {
			if (prev_cursors_mode) free(prev_cursors_mode);
			prev_cursors_mode = strdup(multiple_cursors_mode);
			free(multiple_cursors_mode);
		}
		multiple_cursors_mode = strdup(p);

		rfbLog("remote_cmd: changed -cursor mode "
		    "to: %s\n", multiple_cursors_mode);

		if (strcmp(multiple_cursors_mode, "none") && !show_cursor) {
			show_cursor = 1;
			rfbLog("remote_cmd: changed show_cursor "
			    "to: %d\n", show_cursor);
		}
		initialize_cursors_mode();
		first_cursor();
		goto done;
	}
	if (!strcmp(p, "show_cursor")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, show_cursor);
			goto qry;
		}
		rfbLog("remote_cmd: enabling show_cursor.\n");
		show_cursor = 1;
		if (multiple_cursors_mode && !strcmp(multiple_cursors_mode,
		    "none")) {
			free(multiple_cursors_mode);
			if (prev_cursors_mode) {
				multiple_cursors_mode =
				    strdup(prev_cursors_mode);
			} else {
				multiple_cursors_mode = strdup("default");
			}
			rfbLog("remote_cmd: changed -cursor mode "
			    "to: %s\n", multiple_cursors_mode);
		}
		initialize_cursors_mode();
		first_cursor();
		goto done;
	}
	if (!strcmp(p, "noshow_cursor") || !strcmp(p, "nocursor")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !show_cursor);
			goto qry;
		}
		if (prev_cursors_mode) free(prev_cursors_mode);
		prev_cursors_mode = strdup(multiple_cursors_mode);

		rfbLog("remote_cmd: disabling show_cursor.\n");
		show_cursor = 0;
		initialize_cursors_mode();
		first_cursor();
		goto done;
	}
	if (strstr(p, "arrow") == p) {
		COLON_CHECK("arrow:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, alt_arrow);
			goto qry;
		}
		p += strlen("arrow:");
		alt_arrow = atoi(p);
		rfbLog("remote_cmd: setting alt_arrow: %d.\n", alt_arrow);
		setup_cursors_and_push();
		goto done;
	}
	if (!strcmp(p, "xfixes")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_xfixes);
			goto qry;
		}
		if (! xfixes_present) {
			rfbLog("remote_cmd: cannot enable xfixes "
			    "(not supported on X display)\n");
			goto done;
		}
		rfbLog("remote_cmd: enabling -xfixes"
		    " (if supported).\n");
		use_xfixes = 1;
		initialize_xfixes();
		first_cursor();
		goto done;
	}
	if (!strcmp(p, "noxfixes")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !use_xfixes);
			goto qry;
		}
		if (! xfixes_present) {
			rfbLog("remote_cmd: disabling xfixes  "
			    "(but not supported on X display)\n");
			goto done;
		}
		rfbLog("remote_cmd: disabling -xfixes.\n");
		use_xfixes = 0;
		initialize_xfixes();
		first_cursor();
		goto done;
	}
	if (!strcmp(p, "xdamage")) {
		int orig = use_xdamage;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_xdamage);
			goto qry;
		}
		if (! xdamage_present) {
			rfbLog("remote_cmd: cannot enable xdamage hints "
			    "(not supported on X display)\n");
			goto done;
		}
		rfbLog("remote_cmd: enabling xdamage hints"
		    " (if supported).\n");
		use_xdamage = 1;
		if (use_xdamage != orig) {
			initialize_xdamage();
			create_xdamage_if_needed(0);
		}
		goto done;
	}
	if (!strcmp(p, "noxdamage")) {
		int orig = use_xdamage;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !use_xdamage);
			goto qry;
		}
		if (! xdamage_present) {
			rfbLog("remote_cmd: disabling xdamage hints "
			    "(but not supported on X display)\n");
			goto done;
		}
		rfbLog("remote_cmd: disabling xdamage hints.\n");
		use_xdamage = 0;
		if (use_xdamage != orig) {
			initialize_xdamage();
			destroy_xdamage_if_needed();
		}
		goto done;
	}
	if (strstr(p, "xd_area") == p) {
		int a;
		COLON_CHECK("xd_area:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    xdamage_max_area);
			goto qry;
		}
		p += strlen("xd_area:");
		a = atoi(p);
		if (a >= 0) {
			rfbLog("remote_cmd: setting xdamage_max_area "
			    "%d -> %d.\n", xdamage_max_area, a);
			xdamage_max_area = a;
		}
		goto done;
	}
	if (strstr(p, "xd_mem") == p) {
		double a;
		COLON_CHECK("xd_mem:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%.3f", p, co,
			    xdamage_memory);
			goto qry;
		}
		p += strlen("xd_mem:");
		a = atof(p);
		if (a >= 0.0) {
			rfbLog("remote_cmd: setting xdamage_memory "
			    "%.3f -> %.3f.\n", xdamage_memory, a);
			xdamage_memory = a;
		}
		goto done;
	}
	if (strstr(p, "alphacut") == p) {
		int a;
		COLON_CHECK("alphacut:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    alpha_threshold);
			goto qry;
		}
		p += strlen("alphacut:");
		a = atoi(p);
		if (a < 0) a = 0;
		if (a > 256) a = 256;	/* allow 256 for testing. */
		if (alpha_threshold != a) {
			rfbLog("remote_cmd: setting alphacut "
			    "%d -> %d.\n", alpha_threshold, a);
			if (a == 256) {
				rfbLog("note: alphacut=256 leads to completely"
				    " transparent cursors.\n");
			}
			alpha_threshold = a;
			setup_cursors_and_push();
		}
		goto done;
	}
	if (strstr(p, "alphafrac") == p) {
		double a;
		COLON_CHECK("alphafrac:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%f", p, co,
			    alpha_frac);
			goto qry;
		}
		p += strlen("alphafrac:");
		a = atof(p);
		if (a < 0.0) a = 0.0;
		if (a > 1.0) a = 1.0;
		if (alpha_frac != a) {
			rfbLog("remote_cmd: setting alphafrac "
			    "%f -> %f.\n", alpha_frac, a);
			alpha_frac = a;
			setup_cursors_and_push();
		}
		goto done;
	}
	if (strstr(p, "alpharemove") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, alpha_remove);
			goto qry;
		}
		if (!alpha_remove) {
			rfbLog("remote_cmd: enable alpharemove\n");
			alpha_remove = 1;
			setup_cursors_and_push();
		}
		goto done;
	}
	if (strstr(p, "noalpharemove") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !alpha_remove);
			goto qry;
		}
		if (alpha_remove) {
			rfbLog("remote_cmd: disable alpharemove\n");
			alpha_remove = 0;
			setup_cursors_and_push();
		}
		goto done;
	}
	if (strstr(p, "alphablend") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, alpha_blend);
			goto qry;
		}
		if (!alpha_blend) {
			rfbLog("remote_cmd: enable alphablend\n");
			alpha_remove = 0;
			alpha_blend = 1;
			setup_cursors_and_push();
		}
		goto done;
	}
	if (strstr(p, "noalphablend") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !alpha_blend);
			goto qry;
		}
		if (alpha_blend) {
			rfbLog("remote_cmd: disable alphablend\n");
			alpha_blend = 0;
			setup_cursors_and_push();
		}
		goto done;
	}
	if (strstr(p, "xwarppointer") == p || strstr(p, "xwarp") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_xwarppointer);
			goto qry;
		}
		rfbLog("remote_cmd: turning on xwarppointer mode.\n");
		use_xwarppointer = 1;
		goto done;
	}
	if (strstr(p, "noxwarppointer") == p ||
		    strstr(p, "noxwarp") == p) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !use_xwarppointer);
			goto qry;
		}
		rfbLog("remote_cmd: turning off xwarppointer mode.\n");
		use_xwarppointer = 0;
		goto done;
	}
	if (strstr(p, "buttonmap") == p) {
		COLON_CHECK("buttonmap:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(pointer_remap));
			goto qry;
		}
		p += strlen("buttonmap:");
		if (pointer_remap) free(pointer_remap);
		pointer_remap = strdup(p);

		rfbLog("remote_cmd: setting -buttonmap to:\n\t'%s'\n", p);
		initialize_pointer_map(p);
		goto done;
	}
	if (!strcmp(p, "dragging")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, show_dragging);
			goto qry;
		}
		rfbLog("remote_cmd: enabling mouse dragging mode.\n");
		show_dragging = 1;
		goto done;
	}
	if (!strcmp(p, "nodragging")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !show_dragging);
			goto qry;
		}
		rfbLog("remote_cmd: enabling mouse nodragging mode.\n");
		show_dragging = 0;
		goto done;
	}
#ifndef NO_NCACHE
	if (!strcmp(p, "ncache_cr")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncache_copyrect);
			goto qry;
		}
		ncache_copyrect = 1;
		rfbLog("remote_cmd: set -ncache_cr %d\n", ncache_copyrect);
		goto done;
	}
	if (!strcmp(p, "noncache_cr")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_copyrect);
			goto qry;
		}
		ncache_copyrect = 0;
		rfbLog("remote_cmd: disabled -ncache_cr %d\n", ncache_copyrect);

		goto done;
	}
	if (!strcmp(p, "ncache_no_moveraise")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_wf_raises);
			goto qry;
		}
		ncache_wf_raises = 0;
		rfbLog("remote_cmd: set -ncache_no_moveraise\n");
		goto done;
	}
	if (!strcmp(p, "noncache_no_moveraise")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncache_wf_raises);
			goto qry;
		}
		ncache_wf_raises = 1;
		rfbLog("remote_cmd: disabled -ncache_no_moveraise\n");
		goto done;
	}
	if (!strcmp(p, "ncache_no_dtchange")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_dt_change);
			goto qry;
		}
		ncache_dt_change = 0;
		rfbLog("remote_cmd: set -ncache_no_dt_change\n");
		goto done;
	}
	if (!strcmp(p, "noncache_no_dtchange")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncache_dt_change);
			goto qry;
		}
		ncache_dt_change = 1;
		rfbLog("remote_cmd: disabled -ncache_no_dt_change\n");
		goto done;
	}
	if (!strcmp(p, "ncache_no_rootpixmap")) {
		int orig = ncache_xrootpmap;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_xrootpmap);
			goto qry;
		}
		ncache_xrootpmap = 0;
		rfbLog("remote_cmd: set -ncache_no_rootpixmap\n");
		if (orig != ncache_xrootpmap) {
			do_new_fb(1);
		}
		goto done;
	}
	if (!strcmp(p, "noncache_no_rootpixmap")) {
		int orig = ncache_xrootpmap;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncache_xrootpmap);
			goto qry;
		}
		ncache_xrootpmap = 1;
		rfbLog("remote_cmd: disabled -ncache_no_rootpixmap\n");
		if (orig != ncache_xrootpmap) {
			do_new_fb(1);
		}
		goto done;
	}
	if (!strcmp(p, "ncache_reset_rootpixmap") || !strcmp(p, "ncrp")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_xrootpmap);
			goto qry;
		}
		if (ncache_xrootpmap) {
			rfbLog("remote_cmd: resetting root pixmap.\n");
			set_ncache_xrootpmap();
		}
		goto done;
	}
	if (!strcmp(p, "ncache_keep_anims")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncache_keep_anims);
			goto qry;
		}
		kde_no_animate(0);
		ncache_keep_anims = 1;
		rfbLog("remote_cmd: set -ncache_keep_anims\n");
		goto done;
	}
	if (!strcmp(p, "noncache_keep_anims")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_keep_anims);
			goto qry;
		}
		ncache_keep_anims = 0;
		kde_no_animate(1);
		rfbLog("remote_cmd: disabled -ncache_keep_anims\n");
		goto done;
	}
	if (!strcmp(p, "ncache_old_wm")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncache_old_wm);
			goto qry;
		}
		ncache_old_wm = 1;
		rfbLog("remote_cmd: set -ncache_old_wm\n");
		goto done;
	}
	if (!strcmp(p, "noncache_old_wm")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache_old_wm);
			goto qry;
		}
		ncache_old_wm = 0;
		rfbLog("remote_cmd: disabled -ncache_old_wm\n");
		goto done;
	}
	if (strstr(p, "ncache_pad") == p) {
		int orig = ncache_pad, n;
		COLON_CHECK("ncache_pad:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, ncache_pad);
			goto qry;
		}
		p += strlen("ncache_pad:");
		n = atoi(p);

		rfbLog("remote_cmd: setting ncache_pad %d to: %d\n", orig, n);
		goto done;
	}
	if (!strcmp(p, "ncache")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !!ncache);
			goto qry;
		}
		ncache = ncache0;
		rfbLog("remote_cmd: set ncache %d\n", ncache);
		goto done;
	}
	if (!strcmp(p, "noncache")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncache);
			goto qry;
		}
		ncache = 0;
		rfbLog("remote_cmd: disabled ncache %d\n", ncache);
		goto done;
	}
	if (strstr(p, "ncache_size") == p) {
		int orig = ncache, n;
		COLON_CHECK("ncache_size:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, ncache);
			goto qry;
		}
		p += strlen("ncache_size:");
		n = atoi(p);

		if (n >= 0 && n != ncache) {
			rfbLog("remote_cmd: setting ncache %d to: %d\n", orig, ncache);
			ncache = n;
			do_new_fb(1);
			if (client_count) {
				check_ncache(1,0);
			}
		}
		goto done;
	}
	if (!strcmp(p, "debug_ncache")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, ncdb);
			goto qry;
		}
		ncdb = 1;
		rfbLog("remote_cmd: enabled debug_ncache\n");
		goto done;
	}
	if (!strcmp(p, "nodebug_ncache")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !ncdb);
			goto qry;
		}
		ncdb = 0;
		rfbLog("remote_cmd: disabled debug_ncache\n");
		goto done;
	}
#endif
	if (strstr(p, "wireframe_mode") == p) {
		COLON_CHECK("wireframe_mode:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    wireframe_str ? wireframe_str : WIREFRAME_PARMS);
			goto qry;
		}
		p += strlen("wireframe_mode:");
		if (*p) {
			if (wireframe_str) {
				free(wireframe_str);
			}
			wireframe_str = strdup(p);
			parse_wireframe();
		}
		rfbLog("remote_cmd: enabling -wireframe mode.\n");
		wireframe = 1;
		goto done;
	}
	if (strstr(p, "wireframe:") == p) {	/* skip-cmd-list */
		COLON_CHECK("wireframe:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, wireframe);
			goto qry;
		}
		p += strlen("wireframe:");
		if (*p) {
			if (wireframe_str) {
				free(wireframe_str);
			}
			wireframe_str = strdup(p);
			parse_wireframe();
		}
		rfbLog("remote_cmd: enabling -wireframe mode.\n");
		wireframe = 1;
		goto done;
	}
	if (strstr(p, "wf:") == p) {	/* skip-cmd-list */
		COLON_CHECK("wf:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, wireframe);
			goto qry;
		}
		p += strlen("wf:");
		if (*p) {
			if (wireframe_str) {
				free(wireframe_str);
			}
			wireframe_str = strdup(p);
			parse_wireframe();
		}
		rfbLog("remote_cmd: enabling -wireframe mode.\n");
		wireframe = 1;
		goto done;
	}
	if (!strcmp(p, "wireframe") || !strcmp(p, "wf")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, wireframe);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -wireframe mode.\n");
		wireframe = 1;
		goto done;
	}
	if (!strcmp(p, "nowireframe") || !strcmp(p, "nowf")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !wireframe);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -nowireframe mode.\n");
		wireframe = 0;
		goto done;
	}
	if (!strcmp(p, "wireframelocal") || !strcmp(p, "wfl")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, wireframe_local);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -wireframelocal mode.\n");
		wireframe_local = 1;
		goto done;
	}
	if (!strcmp(p, "nowireframelocal") || !strcmp(p, "nowfl")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !wireframe_local);
			goto qry;
		}
		rfbLog("remote_cmd: enabling -nowireframelocal mode.\n");
		wireframe_local = 0;
		goto done;
	}
	if (strstr(p, "wirecopyrect") == p) {
		COLON_CHECK("wirecopyrect:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(wireframe_copyrect));
			goto qry;
		}
		p += strlen("wirecopyrect:");

		set_wirecopyrect_mode(p);
		rfbLog("remote_cmd: changed -wirecopyrect mode "
		    "to: %s\n", NONUL(wireframe_copyrect));
		got_wirecopyrect = 1;
		goto done;
	}
	if (strstr(p, "wcr") == p) {
		COLON_CHECK("wcr:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(wireframe_copyrect));
			goto qry;
		}
		p += strlen("wcr:");

		set_wirecopyrect_mode(p);
		rfbLog("remote_cmd: changed -wirecopyrect mode "
		    "to: %s\n", NONUL(wireframe_copyrect));
		got_wirecopyrect = 1;
		goto done;
	}
	if (!strcmp(p, "nowirecopyrect") || !strcmp(p, "nowcr")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%s", p,
			    NONUL(wireframe_copyrect));
			goto qry;
		}

		set_wirecopyrect_mode("never");
		rfbLog("remote_cmd: changed -wirecopyrect mode "
		    "to: %s\n", NONUL(wireframe_copyrect));
		goto done;
	}
	if (strstr(p, "scr_area") == p) {
		COLON_CHECK("scr_area:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    scrollcopyrect_min_area);
			goto qry;
		}
		p += strlen("scr_area:");

		scrollcopyrect_min_area = atoi(p);
		rfbLog("remote_cmd: changed -scr_area to: %d\n",
		    scrollcopyrect_min_area);
		goto done;
	}
	if (strstr(p, "scr_skip") == p) {
		char *s = scroll_skip_str;
		COLON_CHECK("scr_skip:")
		if (!s || *s == '\0') s = scroll_skip_str0;
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co, NONUL(s));
			goto qry;
		}
		p += strlen("scr_skip:");
		if (scroll_skip_str) {
			free(scroll_skip_str);
		}

		scroll_skip_str = strdup(p);
		rfbLog("remote_cmd: changed -scr_skip to: %s\n",
		    scroll_skip_str);
		initialize_scroll_matches();
		goto done;
	}
	if (strstr(p, "scr_inc") == p) {
		char *s = scroll_good_str;
		if (!s || *s == '\0') s = scroll_good_str0;
		COLON_CHECK("scr_inc:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co, NONUL(s));
			goto qry;
		}
		p += strlen("scr_inc:");
		if (scroll_good_str) {
			free(scroll_good_str);
		}

		scroll_good_str = strdup(p);
		rfbLog("remote_cmd: changed -scr_inc to: %s\n",
		    scroll_good_str);
		initialize_scroll_matches();
		goto done;
	}
	if (strstr(p, "scr_keys") == p) {
		COLON_CHECK("scr_keys:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(scroll_key_list_str));
			goto qry;
		}
		p += strlen("scr_keys:");
		if (scroll_key_list_str) {
			free(scroll_key_list_str);
		}

		scroll_key_list_str = strdup(p);
		rfbLog("remote_cmd: changed -scr_keys to: %s\n",
		    scroll_key_list_str);
		initialize_scroll_keys();
		goto done;
	}
	if (strstr(p, "scr_term") == p) {
		char *s = scroll_term_str;
		if (!s || *s == '\0') s = scroll_term_str0;
		COLON_CHECK("scr_term:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co, NONUL(s));
			goto qry;
		}
		p += strlen("scr_term:");
		if (scroll_term_str) {
			free(scroll_term_str);
		}

		scroll_term_str = strdup(p);
		rfbLog("remote_cmd: changed -scr_term to: %s\n",
		    scroll_term_str);
		initialize_scroll_term();
		goto done;
	}
	if (strstr(p, "scr_keyrepeat") == p) {
		char *s = max_keyrepeat_str;
		if (!s || *s == '\0') s = max_keyrepeat_str0;
		COLON_CHECK("scr_keyrepeat:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co, NONUL(s));
			goto qry;
		}
		p += strlen("scr_keyrepeat:");
		if (max_keyrepeat_str) {
			free(max_keyrepeat_str);
		}

		max_keyrepeat_str = strdup(p);
		rfbLog("remote_cmd: changed -scr_keyrepeat to: %s\n",
		    max_keyrepeat_str);
		initialize_max_keyrepeat();
		goto done;
	}
	if (strstr(p, "scr_parms") == p) {
		COLON_CHECK("scr_parms:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    scroll_copyrect_str ? scroll_copyrect_str
			    : SCROLL_COPYRECT_PARMS);
			goto qry;
		}
		p += strlen("scr_parms:");
		if (*p) {
			if (scroll_copyrect_str) {
				free(scroll_copyrect_str);
			}
			set_scrollcopyrect_mode("always");
			scroll_copyrect_str = strdup(p);
			parse_scroll_copyrect();
		}
		rfbLog("remote_cmd: set -scr_parms %s.\n",
		    NONUL(scroll_copyrect_str));
		got_scrollcopyrect = 1;
		goto done;
	}
	if (strstr(p, "scrollcopyrect") == p) {
		COLON_CHECK("scrollcopyrect:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(scroll_copyrect));
			goto qry;
		}
		p += strlen("scrollcopyrect:");

		set_scrollcopyrect_mode(p);
		rfbLog("remote_cmd: changed -scrollcopyrect mode "
		    "to: %s\n", NONUL(scroll_copyrect));
		got_scrollcopyrect = 1;
		goto done;
	}
	if (!strcmp(p, "scr") ||
	    strstr(p, "scr:") == p) {	/* skip-cmd-list */
		COLON_CHECK("scr:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(scroll_copyrect));
			goto qry;
		}
		p += strlen("scr:");

		set_scrollcopyrect_mode(p);
		rfbLog("remote_cmd: changed -scrollcopyrect mode "
		    "to: %s\n", NONUL(scroll_copyrect));
		got_scrollcopyrect = 1;
		goto done;
	}
	if (!strcmp(p, "noscrollcopyrect") || !strcmp(p, "noscr")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%s", p,
			    NONUL(scroll_copyrect));
			goto qry;
		}

		set_scrollcopyrect_mode("never");
		rfbLog("remote_cmd: changed -scrollcopyrect mode "
		    "to: %s\n", NONUL(scroll_copyrect));
		goto done;
	}
	if (strstr(p, "fixscreen") == p) {
		COLON_CHECK("fixscreen:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(screen_fixup_str));
			goto qry;
		}
		p += strlen("fixscreen:");
		if (screen_fixup_str) {
			free(screen_fixup_str);
		}
		screen_fixup_str = strdup(p);
		parse_fixscreen();
		rfbLog("remote_cmd: set -fixscreen %s.\n",
		    NONUL(screen_fixup_str));
		goto done;
	}
	if (!strcmp(p, "noxrecord")) {
		int orig = noxrecord;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, noxrecord);
			goto qry;
		}
		noxrecord = 1;
		rfbLog("set noxrecord to: %d\n", noxrecord);
		if (orig != noxrecord) {
			shutdown_xrecord();
		}
		goto done;
	}
	if (!strcmp(p, "xrecord")) {
		int orig = noxrecord;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !noxrecord);
			goto qry;
		}
		noxrecord = 0;
		rfbLog("set noxrecord to: %d\n", noxrecord);
		if (orig != noxrecord) {
			initialize_xrecord();
		}
		goto done;
	}
	if (!strcmp(p, "reset_record")) {
		NOTAPP
		if (use_xrecord) {
			rfbLog("resetting RECORD\n");
			check_xrecord_reset(1);
		} else {
			rfbLog("RECORD is disabled, not resetting.\n");
		}
		goto done;
	}
	if (strstr(p, "pointer_mode") == p) {
		int pm;
		COLON_CHECK("pointer_mode:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, pointer_mode);
			goto qry;
		}
		p += strlen("pointer_mode:");
		pm = atoi(p);
		if (pm < 0 || pm > pointer_mode_max) {
			rfbLog("remote_cmd: pointer_mode out of range:"
			   " 1-%d: %d\n", pointer_mode_max, pm);
		} else {
			rfbLog("remote_cmd: setting pointer_mode %d\n", pm);
			pointer_mode = pm;
		}
		goto done;
	}
	if (strstr(p, "pm") == p) {
		int pm;
		COLON_CHECK("pm:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, pointer_mode);
			goto qry;
		}
		p += strlen("pm:");
		pm = atoi(p);
		if (pm < 0 || pm > pointer_mode_max) {
			rfbLog("remote_cmd: pointer_mode out of range:"
			   " 1-%d: %d\n", pointer_mode_max, pm);
		} else {
			rfbLog("remote_cmd: setting pointer_mode %d\n", pm);
			pointer_mode = pm;
		}
		goto done;
	}
	if (strstr(p, "input_skip") == p) {
		int is;
		COLON_CHECK("input_skip:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, ui_skip);
			goto qry;
		}
		p += strlen("input_skip:");
		is = atoi(p);
		rfbLog("remote_cmd: setting input_skip %d\n", is);
		ui_skip = is;
		goto done;
	}
	if (!strcmp(p, "allinput")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, all_input);
			goto qry;
		}
		all_input = 1;
		rfbLog("enabled allinput\n");
		goto done;
	}
	if (!strcmp(p, "noallinput")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !all_input);
			goto qry;
		}
		all_input = 0;
		rfbLog("disabled allinput\n");
		goto done;
	}
	if (strstr(p, "input") == p) {
		int doit = 1;
		COLON_CHECK("input:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(allowed_input_str));
			goto qry;
		}
		p += strlen("input:");
		if (allowed_input_str && !strcmp(p, allowed_input_str)) { /* skip-cmd-list */
			doit = 0;
		}
		rfbLog("remote_cmd: setting input %s\n", p);
		if (allowed_input_str) free(allowed_input_str);
		if (*p == '\0') {
			allowed_input_str = NULL;
		} else {
			allowed_input_str = strdup(p);
		}
		if (doit) {
			initialize_allowed_input();
		}
		goto done;
	}
	if (!strcmp(p, "grabkbd")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, grab_kbd);
			goto qry;
		}
		grab_kbd = 1;
		if (grab_always) {
			adjust_grabs(1, 0);
		}
		rfbLog("enabled grab_kbd\n");
		goto done;
	}
	if (!strcmp(p, "nograbkbd")) {
		int orig = grab_kbd;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !grab_kbd);
			goto qry;
		}
		grab_kbd = 0;
		if (orig && dpy) {
#if !NO_X11
			X_LOCK;
			XUngrabKeyboard(dpy, CurrentTime);
			X_UNLOCK;
#endif
		}
		rfbLog("disabled grab_kbd\n");

		goto done;
	}
	if (!strcmp(p, "grabptr")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, grab_ptr);
			goto qry;
		}
		grab_ptr = 1;
		if (grab_always) {
			adjust_grabs(1, 0);
		}
		rfbLog("enabled grab_ptr\n");
		goto done;
	}
	if (!strcmp(p, "nograbptr")) {
		int orig = grab_ptr;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !grab_ptr);
			goto qry;
		}
		grab_ptr = 0;
		if (orig && dpy) {
#if !NO_X11
			X_LOCK;
			XUngrabPointer(dpy, CurrentTime);
			X_UNLOCK;
#endif
		}
		rfbLog("disabled grab_ptr\n");
		goto done;
	}
	if (!strcmp(p, "grabalways")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, grab_always);
			goto qry;
		}
		grab_ptr = 1;
		grab_kbd = 1;
		grab_always = 1;
		adjust_grabs(1, 0);
		rfbLog("enabled grab_always\n");
		goto done;
	}
	if (!strcmp(p, "nograbalways")) {
		int orig = grab_always;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !grab_always);
			goto qry;
		}
		grab_ptr = 0;
		grab_kbd = 0;
		grab_always = 0;
		if (orig && dpy) {
#if !NO_X11
			X_LOCK;
			XUngrabKeyboard(dpy, CurrentTime);
			XUngrabPointer(dpy, CurrentTime);
			X_UNLOCK;
#endif
		}
		adjust_grabs(0, 0);
		rfbLog("disabled grab_always\n");
		goto done;
	}
	if (strstr(p, "grablocal") == p) {
		COLON_CHECK("grablocal:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    grab_local);
			goto qry;
		}
		p += strlen("grablocal:");

		grab_local = atoi(p);
		rfbLog("remote_cmd: changed -grablocal to: %d\n",
		    grab_local);
		goto done;
	}
	if (strstr(p, "client_input") == p) {
		NOTAPP
		COLON_CHECK("client_input:")
		p += strlen("client_input:");
		set_client_input(p);
		goto done;
	}
	if (strstr(p, "ssltimeout") == p) {
		int is;
		COLON_CHECK("ssltimeout:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    ssl_timeout_secs);
			goto qry;
		}
		p += strlen("ssltimeout:");
		is = atoi(p);
		rfbLog("remote_cmd: setting ssltimeout: %d\n", is);
		ssl_timeout_secs = is;
		goto done;
	}
	if (strstr(p, "speeds") == p) {
		COLON_CHECK("speeds:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(speeds_str));
			goto qry;
		}
		p += strlen("speeds:");
		if (speeds_str) free(speeds_str);
		speeds_str = strdup(p);

		rfbLog("remote_cmd: setting -speeds to:\n\t'%s'\n", p);
		initialize_speeds();
		goto done;
	}
	if (strstr(p, "wmdt") == p) {
		COLON_CHECK("wmdt:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(wmdt_str));
			goto qry;
		}
		p += strlen("wmdt:");
		if (wmdt_str) free(wmdt_str);
		wmdt_str = strdup(p);

		rfbLog("remote_cmd: setting -wmdt to: %s\n", p);
		goto done;
	}
	if (!strcmp(p, "debug_pointer") || !strcmp(p, "dp")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_pointer);
			goto qry;
		}
		rfbLog("remote_cmd: turning on debug_pointer.\n");
		debug_pointer = 1;
		goto done;
	}
	if (!strcmp(p, "nodebug_pointer") || !strcmp(p, "nodp")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_pointer);
			goto qry;
		}
		rfbLog("remote_cmd: turning off debug_pointer.\n");
		debug_pointer = 0;
		goto done;
	}
	if (!strcmp(p, "debug_keyboard") || !strcmp(p, "dk")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_keyboard);
			goto qry;
		}
		rfbLog("remote_cmd: turning on debug_keyboard.\n");
		debug_keyboard = 1;
		goto done;
	}
	if (!strcmp(p, "nodebug_keyboard") || !strcmp(p, "nodk")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_keyboard);
			goto qry;
		}
		rfbLog("remote_cmd: turning off debug_keyboard.\n");
		debug_keyboard = 0;
		goto done;
	}
	if (strstr(p, "keycode") == p) {
		int kc, down = -1;
		char *c;
		NOTAPP
		COLON_CHECK("keycode:")
		p += strlen("keycode:");
		kc = atoi(p);
		if (kc < 0) kc = 0;
		kc = kc % 256;
		c = strchr(p, ',');
		if (c) down = atoi(c+1);
		rfbLog("remote_cmd: insert keycode %d down=%d\n", kc, down);

		if (macosx_console) {
#ifdef MACOSX
			if (down == -1) {
				macosxCG_keycode_inject(1, kc);
				usleep(50*1000);
				macosxCG_keycode_inject(0, kc);
			} else {
				macosxCG_keycode_inject(down, kc);
			}
#endif
		} else {
			X_LOCK;
			if (down == -1) {
				XTestFakeKeyEvent_wr(dpy, kc, 1, CurrentTime);
				usleep(50*1000);
				XTestFakeKeyEvent_wr(dpy, kc, 0, CurrentTime);
			} else {
				XTestFakeKeyEvent_wr(dpy, kc, down, CurrentTime);
			}
			XFlush_wr(dpy);
			X_UNLOCK;
		}
		goto done;
	}
	if (strstr(p, "keysym") == p) {
		int down = -1;
		unsigned int in;
		KeySym ks;
		char *c, *str;
		NOTAPP
		COLON_CHECK("keysym:")
		p += strlen("keysym:");

		c = strchr(p, ',');
		if (c) {
			down = atoi(c+1);
			*c = '\0';
		}

		if (sscanf(p, "0x%x", &in) == 1) {
			ks = (KeySym) in;
		} else if (sscanf(p, "%u", &in) == 1) {
			ks = (KeySym) in;
		} else if ((ks = XStringToKeysym(p)) != NoSymbol) {
			;
		} else {
			rfbLog("remote_cmd: bad keysym: %s\n", p);
			goto done;
		}
		str = XKeysymToString(ks);
		str = str ? str : "NoSymbol";
		rfbLog("remote_cmd: insert keysym %s 0x%x '%s' down=%d\n", p, ks, str, down);
		if (down == -1) {
			keyboard(1, ks, NULL);
			usleep(50*1000);
			keyboard(0, ks, NULL);
		} else {
			keyboard(down, ks, NULL);
		}
		goto done;
	}
	if (strstr(p, "ptr") == p) {
		int x, y, m = 0;
		NOTAPP
		COLON_CHECK("ptr:")
		p += strlen("ptr:");
		rfbLog("remote_cmd: insert pointer event: %s\n", p);
		if (sscanf(p, "%d,%d,%d", &x, &y, &m) == 3) {
			pointer(m, x, y, NULL);
		} else if (sscanf(p, "%d,%d", &x, &y) == 2) {
			pointer(m, x, y, NULL);
		} else {
			rfbLog("remote_cmd: bad ptr:x,y,mask\n");
		}

		goto done;
	}
	if (strstr(p, "fakebuttonevent") == p) {
		int mb, down = 0;
		NOTAPP
		COLON_CHECK("fakebuttonevent:")
		p += strlen("fakebuttonevent:");
		rfbLog("remote_cmd: insert fakebuttonevent: %s\n", p);
		if (sscanf(p, "%d,%d", &mb, &down) == 2) {
			X_LOCK;
			rfbLog("remote_cmd: XTestFakeButtonEvent(mb=%d, down=%d)\n", mb, down);
			XTestFakeButtonEvent_wr(dpy, mb, down ? True : False, CurrentTime);
			XFlush_wr(dpy);
			X_UNLOCK;
		}

		goto done;
	}
	if (strstr(p, "sleep") == p) {
		NOTAPP
		COLON_CHECK("sleep:")
		p += strlen("sleep:");
		rfbLog("remote_cmd: sleeping: %s\n", p);
		usleep((int) (1.0e+6 * atof(p)));
		rfbLog("remote_cmd: done sleeping.\n");
		goto done;
	}
	if (strstr(p, "get_xprop") == p) {
		char *res;
		unsigned long id;
		Window win = None;	/* None implies root in get_xprop() */

		/* note we force query and assume the colon is there. */
		query = 1;
		if (strstr(p, "get_xprop:") != p) { /* skip-cmd-list */
			snprintf(buf, bufn, "ans=%s:N/A", p);
			goto qry;
		}
		p += strlen("get_xprop:");

		if (strstr(p, "id=") == p) {	/* skip-cmd-list */
			p += strlen("id=");
			if (scan_hexdec(p, &id)) {
				win = (Window) id;
			}
			if (strchr(p, ':')) {
				p = strchr(p, ':') + 1;
			}
		}

		res = get_xprop(p, win);
		if (res == NULL) {
			res = strdup("NULL");
		}
		snprintf(buf, bufn, "ans=get_xprop:%s:%s", p, res);
		free(res);

		goto qry;
	}
	if (strstr(p, "set_xprop") == p) {
		char *q;
		int rc = -2;
		unsigned long id;
		Window win = None;	/* None implies root in set_xprop() */

		/* note we force query and assume the colon is there. */
		query = 1;
		if (strstr(p, "set_xprop:") != p) { /* skip-cmd-list */
			snprintf(buf, bufn, "ans=%s:N/A", p);
			goto qry;
		}
		p += strlen("set_xprop:");

		if (strstr(p, "id=") == p) {	/* skip-cmd-list */
			p += strlen("id=");
			if (scan_hexdec(p, &id)) {
				win = (Window) id;
			}
			if (strchr(p, ':')) {
				p = strchr(p, ':') + 1;
			}
		}

		q = strchr(p, ':');
		if (q) {
			*q = '\0';
			rc = set_xprop(p, win, q+1);
			*q = ':';
		}
		snprintf(buf, bufn, "ans=set_xprop:%s:%d", p, rc);

		goto qry;
	}
	if (strstr(p, "wininfo") == p) {
		char *res, *t = "";
		unsigned long id;
		Window win = None;
		int show_children = 0;

		/* note we force query and assume the colon is there. */
		query = 1;
		if (strstr(p, "wininfo:") != p) { /* skip-cmd-list */
			snprintf(buf, bufn, "ans=%s:N/A", p);
			goto qry;
		}
		p += strlen("wininfo:");

		if (p[0] == '+') {
			show_children = 1;
			t = "+";
			p++;
		}
		if (!strcmp(p, "root")) { /* skip-cmd-list */
			win = rootwin;
		} else if (scan_hexdec(p, &id)) {
			win = (Window) id;
		}

		res = wininfo(win, show_children);
		if (res == NULL) {
			res = strdup("NULL");
		}
		snprintf(buf, bufn, "ans=wininfo:%s%s:%s", t, p, res);
		free(res);

		goto qry;
	}
	if (strstr(p, "bcx_xattach") == p) {
		char *res;
		int pg_init = -1, kg_init = -1;
		int try = 0, max_tries = 4;

		/* note we force query and assume the colon is there. */
		query = 1;
		if (strstr(p, "bcx_xattach:") != p) { /* skip-cmd-list */
			snprintf(buf, bufn, "ans=%s:N/A", p);
			goto qry;
		}
		p += strlen("bcx_xattach:");

		if (strstr(p, "retry=")) { /* skip-cmd-list */
			int n;
			char *q = strstr(p, "retry="); /* skip-cmd-list */
			if (sscanf(q, "retry=%d", &n) == 1) {
				if (n < 0) n = 0;
				max_tries = 1 + n;
			}
		}

		try_again:

		res = bcx_xattach(p, &pg_init, &kg_init);
		try++;
		if (res == NULL) {
			res = strdup("NULL");
		} else if (strstr(res, "GRAB_FAIL_INIT")) {
			rfbLog("bcx_xattach: failed grab check for '%s': %s.  Final state OK, not Retrying.\n", p, res);
		} else if (strstr(res, "GRAB_FAIL") && try < max_tries) {
			rfbLog("bcx_xattach: failed grab check for '%s': %s.  Retrying[%d]...\n", p, res, try);
			free(res);
			pointer(0, dpy_x/2 + try, dpy_y/2 + try, NULL);
#if !NO_X11
			X_LOCK;
			XFlush_wr(dpy);
			if (dpy) {
				if (try == 2) {
					XSync(dpy, False);
				} else if (try == 3) {
					XSync(dpy, True);
				}
			}
			X_UNLOCK;
#endif
			if (try == 1) {
				usleep(250*1000);
			} else if (try <= 4) {
				usleep(try*400*1000);
			} else {
				usleep(4*500*1000);
			}
			goto try_again;
		}

		snprintf(buf, bufn, "ans=bcx_xattach:%s:%s", p, res);
		free(res);

		goto qry;
	}
	if (strstr(p, "deferupdate") == p) {
		int d;
		COLON_CHECK("deferupdate:")
		if (query) {
			if (!screen) {
				d = defer_update;
			} else {
				d = screen->deferUpdateTime;
			}
			snprintf(buf, bufn, "ans=%s%s%d", p, co, d);
			goto qry;
		}
		p += strlen("deferupdate:");
		d = atoi(p);
		if (d < 0) d = 0;
		rfbLog("remote_cmd: setting defer to %d ms.\n", d);
		defer_update = d;
		/* mutex */
		screen->deferUpdateTime = d;
		got_defer = 1;
		goto done;
	}
	if (strstr(p, "defer") == p) {
		int d;
		COLON_CHECK("defer:")
		if (query) {
			if (!screen) {
				d = defer_update;
			} else {
				d = screen->deferUpdateTime;
			}
			snprintf(buf, bufn, "ans=%s%s%d", p, co, d);
			goto qry;
		}
		p += strlen("defer:");
		d = atoi(p);
		if (d < 0) d = 0;
		rfbLog("remote_cmd: setting defer to %d ms.\n", d);
		defer_update = d;
		/* mutex */
		screen->deferUpdateTime = d;
		got_defer = 1;
		goto done;
	}
	if (strstr(p, "setdefer") == p) {
		COLON_CHECK("setdefer:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, set_defer);
			goto qry;
		}
		p += strlen("setdefer:");
		set_defer = atoi(p);
		rfbLog("remote_cmd: setting set_defer to %d\n", set_defer);
		goto done;
	}
	if (strstr(p, "extra_fbur") == p) {
		COLON_CHECK("extra_fbur:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, extra_fbur);
			goto qry;
		}
		p += strlen("extra_fbur:");
		extra_fbur = atoi(p);
		rfbLog("remote_cmd: setting extra_fbur to %d\n", extra_fbur);
		goto done;
	}
	if (strstr(p, "wait_ui") == p) {
		double w;
		COLON_CHECK("wait_ui:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%.2f", p, co, wait_ui);
			goto qry;
		}
		p += strlen("wait_ui:");
		w = atof(p);
		if (w <= 0) w = 1.0;
		rfbLog("remote_cmd: setting wait_ui factor %.2f -> %.2f\n",
		    wait_ui, w);
		wait_ui = w;
		goto done;
	}
	if (!strcmp(p, "wait_bog")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, wait_bog);
			goto qry;
		}
		wait_bog = 1;
		rfbLog("remote_cmd: setting wait_bog to %d\n", wait_bog);
		goto done;
	}
	if (!strcmp(p, "nowait_bog")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !wait_bog);
			goto qry;
		}
		wait_bog = 0;
		rfbLog("remote_cmd: setting wait_bog to %d\n", wait_bog);
		goto done;
	}
	if (strstr(p, "slow_fb") == p) {
		double w;
		COLON_CHECK("slow_fb:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%.2f", p, co, slow_fb);
			goto qry;
		}
		p += strlen("slow_fb:");
		w = atof(p);
		if (w <= 0) w = 0.0;
		rfbLog("remote_cmd: setting slow_fb factor %.2f -> %.2f\n",
		    slow_fb, w);
		slow_fb = w;
		goto done;
	}
	if (strstr(p, "xrefresh") == p) {
		double w;
		COLON_CHECK("xrefresh:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%.2f", p, co, xrefresh);
			goto qry;
		}
		p += strlen("xrefresh:");
		w = atof(p);
		if (w <= 0) w = 0.0;
		rfbLog("remote_cmd: setting xrefresh delay %.2f -> %.2f\n",
		    xrefresh, w);
		xrefresh = w;
		goto done;
	}
	if (strstr(p, "wait") == p) {
		int w;
		COLON_CHECK("wait:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, waitms);
			goto qry;
		}
		p += strlen("wait:");
		w = atoi(p);
		if (w < 0) w = 0;
		rfbLog("remote_cmd: setting wait %d -> %d ms.\n", waitms, w);
		waitms = w;
		goto done;
	}
	if (strstr(p, "readtimeout") == p) {
		int w, orig = rfbMaxClientWait;
		COLON_CHECK("readtimeout:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    rfbMaxClientWait/1000);
			goto qry;
		}
		p += strlen("readtimeout:");
		w = atoi(p) * 1000;
		if (w <= 0) w = 0;
		rfbLog("remote_cmd: setting rfbMaxClientWait %d -> "
		    "%d msec.\n", orig, w);
		rfbMaxClientWait = w;
		goto done;
	}
	if (!strcmp(p, "nap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, take_naps);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on nap mode.\n");
		take_naps = 1;
		goto done;
	}
	if (!strcmp(p, "nonap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !take_naps);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off nap mode.\n");
		take_naps = 0;
		goto done;
	}
	if (strstr(p, "sb") == p) {
		int w;
		COLON_CHECK("sb:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, screen_blank);
			goto qry;
		}
		p += strlen("sb:");
		w = atoi(p);
		if (w < 0) w = 0;
		rfbLog("remote_cmd: setting screen_blank %d -> %d sec.\n",
		    screen_blank, w);
		screen_blank = w;
		goto done;
	}
	if (strstr(p, "screen_blank") == p) {
		int w;
		COLON_CHECK("screen_blank:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, screen_blank);
			goto qry;
		}
		p += strlen("screen_blank:");
		w = atoi(p);
		if (w < 0) w = 0;
		rfbLog("remote_cmd: setting screen_blank %d -> %d sec.\n",
		    screen_blank, w);
		screen_blank = w;
		goto done;
	}
	if (!strcmp(p, "fbpm")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !watch_fbpm);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off -nofbpm mode.\n");
		watch_fbpm = 0;
		goto done;
	}
	if (!strcmp(p, "nofbpm")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, watch_fbpm);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on -nofbpm mode.\n");
		watch_fbpm = 1;
		goto done;
	}
	if (!strcmp(p, "dpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !watch_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off -nodpms mode.\n");
		watch_dpms = 0;
		goto done;
	}
	if (!strcmp(p, "nodpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, watch_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on -nodpms mode.\n");
		watch_dpms = 1;
		goto done;
	}
	if (!strcmp(p, "clientdpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, client_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on -clientdpms mode.\n");
		client_dpms = 1;
		goto done;
	}
	if (!strcmp(p, "noclientdpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !client_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off -clientdpms mode.\n");
		client_dpms = 0;
		goto done;
	}
	if (!strcmp(p, "forcedpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, force_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on -forcedpms mode.\n");
		force_dpms = 1;
		goto done;
	}
	if (!strcmp(p, "noforcedpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !force_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off -forcedpms mode.\n");
		force_dpms = 0;
		goto done;
	}
	if (!strcmp(p, "noserverdpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, no_ultra_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on -noserverdpms mode.\n");
		no_ultra_dpms = 1;
		goto done;
	}
	if (!strcmp(p, "serverdpms")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !no_ultra_dpms);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off -noserverdpms mode.\n");
		no_ultra_dpms = 0;
		goto done;
	}
	if (!strcmp(p, "noultraext")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, no_ultra_ext);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on -noultraext mode.\n");
		no_ultra_ext = 1;
		goto done;
	}
	if (!strcmp(p, "ultraext")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !no_ultra_ext);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off -noultraext mode.\n");
		no_ultra_ext = 0;
		goto done;
	}
	if (!strcmp(p, "chatwindow")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, chat_window);
			    goto qry;
		}
		rfbLog("remote_cmd: enabling the local chat window.\n");
		chat_window = 1;
		goto done;
	}
	if (!strcmp(p, "nochatwindow")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !chat_window);
			    goto qry;
		}
		rfbLog("remote_cmd: disabling the local chat window.\n");
		chat_window = 0;
		goto done;
	}
	if (!strcmp(p, "chaton")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, (chat_window_client != NULL));
			    goto qry;
		}
		rfbLog("remote_cmd: turning local chat window on.\n");
		chat_window = 1;
		set_text_chat(NULL, rfbTextChatOpen, "");
		goto done;
	}
	if (!strcmp(p, "chatoff")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, (chat_window_client == NULL));
			    goto qry;
		}
		rfbLog("remote_cmd: turning local chat window off.\n");
		set_text_chat(NULL, rfbTextChatClose, "");
		set_text_chat(NULL, rfbTextChatFinished, "");
		goto done;
	}
	if (strstr(p, "fs") == p) {
		COLON_CHECK("fs:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%f", p, co, fs_frac);
			goto qry;
		}
		p += strlen("fs:");
		fs_frac = atof(p);
		rfbLog("remote_cmd: setting -fs frac to %f\n", fs_frac);
		goto done;
	}
	if (strstr(p, "gaps") == p) {
		int g;
		COLON_CHECK("gaps:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, gaps_fill);
			goto qry;
		}
		p += strlen("gaps:");
		g = atoi(p);
		if (g < 0) g = 0;
		rfbLog("remote_cmd: setting gaps_fill %d -> %d.\n",
		    gaps_fill, g);
		gaps_fill = g;
		goto done;
	}
	if (strstr(p, "grow") == p) {
		int g;
		COLON_CHECK("grow:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, grow_fill);
			goto qry;
		}
		p += strlen("grow:");
		g = atoi(p);
		if (g < 0) g = 0;
		rfbLog("remote_cmd: setting grow_fill %d -> %d.\n",
		    grow_fill, g);
		grow_fill = g;
		goto done;
	}
	if (strstr(p, "fuzz") == p) {
		int f;
		COLON_CHECK("fuzz:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, tile_fuzz);
			goto qry;
		}
		p += strlen("fuzz:");
		f = atoi(p);
		if (f < 0) f = 0;
		rfbLog("remote_cmd: setting tile_fuzz %d -> %d.\n",
		    tile_fuzz, f);
		grow_fill = f;
		goto done;
	}
	if (!strcmp(p, "snapfb")) {
		int orig = use_snapfb;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, use_snapfb);
			    goto qry;
		}
		rfbLog("remote_cmd: turning on snapfb mode.\n");
		use_snapfb = 1;
		if (orig != use_snapfb) {
			do_new_fb(1);
		}
		goto done;
	}
	if (!strcmp(p, "nosnapfb")) {
		int orig = use_snapfb;
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !use_snapfb);
			    goto qry;
		}
		rfbLog("remote_cmd: turning off snapfb mode.\n");
		use_snapfb = 0;
		if (orig != use_snapfb) {
			do_new_fb(1);
		}

		goto done;
	}
	if (strstr(p, "rawfb") == p) {
		COLON_CHECK("rawfb:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(raw_fb_str));
			goto qry;
		}
		p += strlen("rawfb:");
		if (raw_fb_str) free(raw_fb_str);
		raw_fb_str = strdup(p);
		if (safe_remote_only && strstr(p, "setup:") == p) { /* skip-cmd-list */
			/* n.b. we still allow filename, shm, of rawfb */
			fprintf(stderr, "unsafe rawfb setup: %s\n", p);
			exit(1);
		}

		rfbLog("remote_cmd: setting -rawfb to:\n\t'%s'\n", p);

		if (*raw_fb_str == '\0') {
			free(raw_fb_str);
			raw_fb_str = NULL;
			if (raw_fb_mmap) {
				munmap(raw_fb_addr, raw_fb_mmap);
			}
			if (raw_fb_fd >= 0) {
				close(raw_fb_fd);
			}
			raw_fb_fd = -1;
			raw_fb = NULL;
			raw_fb_addr = NULL;
			raw_fb_offset = 0;
			raw_fb_shm = 0;
			raw_fb_mmap = 0;
			raw_fb_seek = 0;
			rfbLog("restoring per-rawfb settings...\n");
			set_raw_fb_params(1);
		}
		rfbLog("hang on tight, here we go...\n");
		raw_fb_back_to_X = 1;
		do_new_fb(1);
		raw_fb_back_to_X = 0;
		goto done;
	}
	if (strstr(p, "uinput_accel") == p) {
		COLON_CHECK("uinput_accel:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(get_uinput_accel()));
			goto qry;
		}
		p += strlen("uinput_accel:");
		rfbLog("set_uinput_accel: %s\n", p);
		set_uinput_accel(p);
		goto done;
	}
	if (strstr(p, "uinput_thresh") == p) {
		COLON_CHECK("uinput_thresh:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(get_uinput_thresh()));
			goto qry;
		}
		p += strlen("uinput_thresh:");
		rfbLog("set_uinput_thresh: %s\n", p);
		set_uinput_thresh(p);
		goto done;
	}
	if (strstr(p, "uinput_reset") == p) {
		COLON_CHECK("uinput_reset:")
		p += strlen("uinput_reset:");
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    get_uinput_reset());
			goto qry;
		}
		rfbLog("set_uinput_reset: %s\n", p);
		set_uinput_reset(atoi(p));
		goto done;
	}
	if (strstr(p, "uinput_always") == p) {
		COLON_CHECK("uinput_always:")
		p += strlen("uinput_always:");
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    get_uinput_always());
			goto qry;
		}
		rfbLog("set_uinput_always: %s\n", p);
		set_uinput_always(atoi(p));
		goto done;
	}
	if (strstr(p, "progressive") == p) {
		int f;
		COLON_CHECK("progressive:")
		if (query) {
			if (!screen) {
				f = 0;
			} else {
				f = screen->progressiveSliceHeight;
			}
			snprintf(buf, bufn, "ans=%s%s%d", p, co, f);
			goto qry;
		}
		p += strlen("progressive:");
		f = atoi(p);
		if (f < 0) f = 0;
		rfbLog("remote_cmd: setting progressive %d -> %d.\n",
		    screen->progressiveSliceHeight, f);
		/* mutex */
		screen->progressiveSliceHeight = f;
		goto done;
	}
	if (strstr(p, "rfbport") == p) {
		int rp, orig = screen ? screen->port : 5900;
		COLON_CHECK("rfbport:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, orig);
			goto qry;
		}
		p += strlen("rfbport:");
		rp = atoi(p);
		reset_rfbport(orig, rp);
		goto done;
	}
	if (!strcmp(p, "http")) {
		if (query) {
			int ls = screen ? screen->httpListenSock : -1;
			snprintf(buf, bufn, "ans=%s:%d", p, (ls > -1));
			goto qry;
		}
		if (screen->httpListenSock > -1) {
			rfbLog("already listening for http connections.\n");
		} else {
			rfbLog("turning on listening for http connections.\n");
			if (check_httpdir()) {
				http_connections(1);
			}
		}
		goto done;
	}
	if (!strcmp(p, "nohttp")) {
		if (query) {
			int ls = screen ? screen->httpListenSock : -1;
			snprintf(buf, bufn, "ans=%s:%d", p, !(ls > -1));
			goto qry;
		}
		if (screen->httpListenSock < 0) {
			rfbLog("already not listening for http connections.\n");
		} else {
			rfbLog("turning off listening for http connections.\n");
			if (check_httpdir()) {
				http_connections(0);
			}
		}
		goto done;
	}
	if (strstr(p, "httpport") == p) {
		int hp, orig = screen ? screen->httpPort : 0;
		COLON_CHECK("httpport:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, orig);
			goto qry;
		}
		p += strlen("httpport:");
		hp = atoi(p);
		reset_httpport(orig, hp);
		goto done;
	}
	if (strstr(p, "httpdir") == p) {
		COLON_CHECK("httpdir:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(http_dir));
			goto qry;
		}
		p += strlen("httpdir:");
		if (http_dir && !strcmp(http_dir, p)) {
			rfbLog("no change in httpdir: %s\n", http_dir);
		} else {
			if (http_dir) {
				free(http_dir);
			}
			http_dir = strdup(p);
			http_connections(0);
			if (*p != '\0') {
				http_connections(1);
			}
		}
		goto done;
	}
	if (!strcmp(p, "enablehttpproxy")) {
		if (query) {
			int ht = screen ? screen->httpEnableProxyConnect : 0;
			snprintf(buf, bufn, "ans=%s:%d", p, ht != 0);
			goto qry;
		}
		rfbLog("turning on enablehttpproxy.\n");
		/* mutex */
		screen->httpEnableProxyConnect = 1;
		goto done;
	}
	if (!strcmp(p, "noenablehttpproxy")) {
		if (query) {
			int ht = screen ? screen->httpEnableProxyConnect : 0;
			snprintf(buf, bufn, "ans=%s:%d", p, ht == 0);
			goto qry;
		}
		rfbLog("turning off enablehttpproxy.\n");
		screen->httpEnableProxyConnect = 0;
		goto done;
	}
	if (!strcmp(p, "alwaysshared")) {
		if (query) {
			int t = screen ? screen->alwaysShared : 0;
			snprintf(buf, bufn, "ans=%s:%d", p, t != 0);
			goto qry;
		}
		rfbLog("turning on alwaysshared.\n");
		screen->alwaysShared = 1;
		goto done;
	}
	if (!strcmp(p, "noalwaysshared")) {
		if (query) {
			int t = screen ? screen->alwaysShared : 0;
			snprintf(buf, bufn, "ans=%s:%d", p, t == 0);
			goto qry;
		}
		rfbLog("turning off alwaysshared.\n");
		screen->alwaysShared = 0;
		goto done;
	}
	if (!strcmp(p, "nevershared")) {
		if (query) {
			int t = screen ? screen->neverShared : 1;
			snprintf(buf, bufn, "ans=%s:%d", p, t != 0);
			goto qry;
		}
		rfbLog("turning on nevershared.\n");
		screen->neverShared = 1;
		goto done;
	}
	if (!strcmp(p, "noalwaysshared")) {
		if (query) {
			int t = screen ? screen->neverShared : 1;
			snprintf(buf, bufn, "ans=%s:%d", p, t == 0);
			goto qry;
		}
		rfbLog("turning off nevershared.\n");
		screen->neverShared = 0;
		goto done;
	}
	if (!strcmp(p, "dontdisconnect")) {
		if (query) {
			int t = screen ? screen->dontDisconnect : 1;
			snprintf(buf, bufn, "ans=%s:%d", p, t != 0);
			goto qry;
		}
		rfbLog("turning on dontdisconnect.\n");
		screen->dontDisconnect = 1;
		goto done;
	}
	if (!strcmp(p, "nodontdisconnect")) {
		if (query) {
			int t = screen ? screen->dontDisconnect : 1;
			snprintf(buf, bufn, "ans=%s:%d", p, t == 0);
			goto qry;
		}
		rfbLog("turning off dontdisconnect.\n");
		screen->dontDisconnect = 0;
		goto done;
	}
	if (!strcmp(p, "desktop") ||
	    strstr(p, "desktop:") == p) {	/* skip-cmd-list */
		COLON_CHECK("desktop:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%s", p, co,
			    NONUL(rfb_desktop_name));
			goto qry;
		}
		p += strlen("desktop:");
		if (rfb_desktop_name) {
			free(rfb_desktop_name);
		}
		rfb_desktop_name = strdup(p);
		/* mutex */
		screen->desktopName = rfb_desktop_name;
		rfbLog("remote_cmd: setting desktop name to %s\n",
		    rfb_desktop_name);
		goto done;
	}
	if (!strcmp(p, "debug_xevents")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_xevents);
			goto qry;
		}
		debug_xevents = 1;
		rfbLog("set debug_xevents to: %d\n", debug_xevents);
		goto done;
	}
	if (!strcmp(p, "nodebug_xevents")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_xevents);
			goto qry;
		}
		debug_xevents = 0;
		rfbLog("set debug_xevents to: %d\n", debug_xevents);
		goto done;
	}
	if (strstr(p, "debug_xevents") == p) {
		COLON_CHECK("debug_xevents:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, debug_xevents);
			goto qry;
		}
		p += strlen("debug_xevents:");
		debug_xevents = atoi(p);
		rfbLog("set debug_xevents to: %d\n", debug_xevents);
		goto done;
	}
	if (!strcmp(p, "debug_xdamage")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_xdamage);
			goto qry;
		}
		debug_xdamage = 1;
		rfbLog("set debug_xdamage to: %d\n", debug_xdamage);
		goto done;
	}
	if (!strcmp(p, "nodebug_xdamage")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_xdamage);
			goto qry;
		}
		debug_xdamage = 0;
		rfbLog("set debug_xdamage to: %d\n", debug_xdamage);
		goto done;
	}
	if (strstr(p, "debug_xdamage") == p) {
		COLON_CHECK("debug_xdamage:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, debug_xdamage);
			goto qry;
		}
		p += strlen("debug_xdamage:");
		debug_xdamage = atoi(p);
		rfbLog("set debug_xdamage to: %d\n", debug_xdamage);
		goto done;
	}
	if (!strcmp(p, "debug_wireframe")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_wireframe);
			goto qry;
		}
		debug_wireframe = 1;
		rfbLog("set debug_wireframe to: %d\n", debug_wireframe);
		goto done;
	}
	if (!strcmp(p, "nodebug_wireframe")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_wireframe);
			goto qry;
		}
		debug_wireframe = 0;
		rfbLog("set debug_wireframe to: %d\n", debug_wireframe);
		goto done;
	}
	if (strstr(p, "debug_wireframe") == p) {
		COLON_CHECK("debug_wireframe:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    debug_wireframe);
			goto qry;
		}
		p += strlen("debug_wireframe:");
		debug_wireframe = atoi(p);
		rfbLog("set debug_wireframe to: %d\n", debug_wireframe);
		goto done;
	}
	if (!strcmp(p, "debug_scroll")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_scroll);
			goto qry;
		}
		debug_scroll = 1;
		rfbLog("set debug_scroll to: %d\n", debug_scroll);
		goto done;
	}
	if (!strcmp(p, "nodebug_scroll")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_scroll);
			goto qry;
		}
		debug_scroll = 0;
		rfbLog("set debug_scroll to: %d\n", debug_scroll);
		goto done;
	}
	if (strstr(p, "debug_scroll") == p) {
		COLON_CHECK("debug_scroll:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    debug_scroll);
			goto qry;
		}
		p += strlen("debug_scroll:");
		debug_scroll = atoi(p);
		rfbLog("set debug_scroll to: %d\n", debug_scroll);
		goto done;
	}
	if (!strcmp(p, "debug_tiles") || !strcmp(p, "dbt")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_tiles);
			goto qry;
		}
		debug_tiles = 1;
		rfbLog("set debug_tiles to: %d\n", debug_tiles);
		goto done;
	}
	if (!strcmp(p, "nodebug_tiles") || !strcmp(p, "nodbt")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_tiles);
			goto qry;
		}
		debug_tiles = 0;
		rfbLog("set debug_tiles to: %d\n", debug_tiles);
		goto done;
	}
	if (strstr(p, "debug_tiles") == p) {
		COLON_CHECK("debug_tiles:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co,
			    debug_tiles);
			goto qry;
		}
		p += strlen("debug_tiles:");
		debug_tiles = atoi(p);
		rfbLog("set debug_tiles to: %d\n", debug_tiles);
		goto done;
	}
	if (!strcmp(p, "debug_grabs")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_grabs);
			goto qry;
		}
		debug_grabs = 1;
		rfbLog("set debug_grabs to: %d\n", debug_grabs);
		goto done;
	}
	if (!strcmp(p, "nodebug_grabs")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_grabs);
			goto qry;
		}
		debug_grabs = 0;
		rfbLog("set debug_grabs to: %d\n", debug_grabs);
		goto done;
	}
	if (!strcmp(p, "debug_sel")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, debug_sel);
			goto qry;
		}
		debug_sel = 1;
		rfbLog("set debug_sel to: %d\n", debug_sel);
		goto done;
	}
	if (!strcmp(p, "nodebug_sel")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !debug_sel);
			goto qry;
		}
		debug_sel = 0;
		rfbLog("set debug_sel to: %d\n", debug_sel);
		goto done;
	}
	if (!strcmp(p, "dbg")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, crash_debug);
			goto qry;
		}
		crash_debug = 1;
		rfbLog("set crash_debug to: %d\n", crash_debug);
		goto done;
	}
	if (!strcmp(p, "nodbg")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !crash_debug);
			goto qry;
		}
		crash_debug = 0;
		rfbLog("set crash_debug to: %d\n", crash_debug);
		goto done;
	}
	if (!strcmp(p, "macnosaver")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, macosx_noscreensaver); goto qry;
		}
		rfbLog("remote_cmd: turn on macnosaver.\n");
		macosx_noscreensaver = 1;
		goto done;
	}
	if (!strcmp(p, "macsaver") || !strcmp(p, "nomacnosaver")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !macosx_noscreensaver); goto qry;
		}
		rfbLog("remote_cmd: turn off macnosaver.\n");
		macosx_noscreensaver = 0;
		goto done;
	}
	if (!strcmp(p, "macnowait")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !macosx_wait_for_switch); goto qry;
		}
		rfbLog("remote_cmd: disable macosx_wait_for_switch.\n");
		macosx_wait_for_switch = 0;
		goto done;
	}
	if (!strcmp(p, "macwait") || !strcmp(p, "nomacnowait")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, macosx_wait_for_switch); goto qry;
		}
		rfbLog("remote_cmd: enable macosx_wait_for_switch.\n");
		macosx_wait_for_switch = 1;
		goto done;
	}
	if (strstr(p, "macwheel") == p) {
		COLON_CHECK("macwheel:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, macosx_mouse_wheel_speed);
			goto qry;
		}
		p += strlen("macwheel:");
		macosx_mouse_wheel_speed = atoi(p);
		rfbLog("set macosx_mouse_wheel_speed to: %d\n", macosx_mouse_wheel_speed);
		goto done;
	}
	if (!strcmp(p, "macnoswap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !macosx_swap23); goto qry;
		}
		rfbLog("remote_cmd: disable macosx_swap23.\n");
		macosx_swap23 = 0;
		goto done;
	}
	if (!strcmp(p, "macswap") || !strcmp(p, "nomacnoswap")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, macosx_swap23); goto qry;
		}
		rfbLog("remote_cmd: enable macosx_swap23.\n");
		macosx_swap23 = 1;
		goto done;
	}
	if (!strcmp(p, "macnoresize")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !macosx_resize); goto qry;
		}
		rfbLog("remote_cmd: disable macosx_resize.\n");
		macosx_resize = 0;
		goto done;
	}
	if (!strcmp(p, "macresize") || !strcmp(p, "nomacnoresize")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, macosx_resize); goto qry;
		}
		rfbLog("remote_cmd: enable macosx_resize.\n");
		macosx_resize = 1;
		goto done;
	}
	if (strstr(p, "maciconanim") == p) {
		COLON_CHECK("maciconanim:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, macosx_icon_anim_time);
			goto qry;
		}
		p += strlen("maciconanim:");
		macosx_icon_anim_time = atoi(p);
		rfbLog("set macosx_icon_anim_time to: %d\n", macosx_icon_anim_time);
		goto done;
	}
	if (!strcmp(p, "macmenu")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, macosx_ncache_macmenu); goto qry;
		}
		rfbLog("remote_cmd: enable macosx_ncache_macmenu.\n");
		macosx_ncache_macmenu = 1;
		goto done;
	}
	if (!strcmp(p, "macnomenu") || !strcmp(p, "nomacmenu")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !macosx_ncache_macmenu); goto qry;
		}
		rfbLog("remote_cmd: disable macosx_ncache_macmenu.\n");
		macosx_ncache_macmenu = 0;
		goto done;
	}
	if (!strcmp(p, "macuskbd")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, macosx_us_kbd); goto qry;
		}
		rfbLog("remote_cmd: enable macosx_us_kbd.\n");
		macosx_us_kbd = 1;
		goto done;
	}
	if (!strcmp(p, "nomacuskbd")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p, !macosx_us_kbd); goto qry;
		}
		rfbLog("remote_cmd: disable macosx_us_kbd.\n");
		macosx_us_kbd = 0;
		goto done;
	}
	if (strstr(p, "hack") == p) { /* skip-cmd-list */
		COLON_CHECK("hack:")
		if (query) {
			snprintf(buf, bufn, "ans=%s%s%d", p, co, hack_val);
			goto qry;
		}
		p += strlen("hack:");
		hack_val = atoi(p);
		rfbLog("set hack_val to: %d\n", hack_val);
		goto done;
	}
	if (!strcmp(p, "noremote")) {
		if (query) {
			snprintf(buf, bufn, "ans=%s:%d", p,
			    !accept_remote_cmds);
			goto qry;
		}
		rfbLog("remote_cmd: disabling remote commands.\n");
		accept_remote_cmds = 0; /* cannot be turned back on. */
		goto done;
	}
	if (strstr(p, "client_info_sock") == p) { /* skip-cmd-list */
		NOTAPP
		p += strlen("client_info_sock:");
		if (*p != '\0') {
			start_client_info_sock(p);
		}
		goto done;
	}
	if (strstr(p, "noop") == p) {
		NOTAPP
		rfbLog("remote_cmd: noop\n");
		goto done;
	}
	if (icon_mode && !query && strstr(p, "passwd") == p) { /* skip-cmd-list */
		char **passwds_new = (char **) malloc(3*sizeof(char *));
		char **passwds_old = (char **) screen->authPasswdData;

		COLON_CHECK("passwd:")
		p += strlen("passwd:");

		passwds_new[0] = strdup(p);

		/* mutex */
		if (screen->authPasswdData &&
		    screen->passwordCheck == rfbCheckPasswordByList) {
				passwds_new[1] = passwds_old[1];
		} else {
			passwds_new[1] = NULL;
			screen->passwordCheck = rfbCheckPasswordByList;
		}
		passwds_new[2] = NULL;

		screen->authPasswdData = (void*) passwds_new;
		if (*p == '\0') {
			screen->authPasswdData = (void*) NULL;
		}
		rfbLog("remote_cmd: changed full access passwd.\n");
		goto done;
	}
	if (icon_mode && !query && strstr(p, "viewpasswd") == p) { /* skip-cmd-list */
		char **passwds_new = (char **) malloc(3*sizeof(char *));
		char **passwds_old = (char **) screen->authPasswdData;
		
		COLON_CHECK("viewpasswd:")
		p += strlen("viewpasswd:");

		passwds_new[1] = strdup(p);

		if (screen->authPasswdData &&
		    screen->passwordCheck == rfbCheckPasswordByList) {
				passwds_new[0] = passwds_old[0];
		} else {
			char *tmp = (char *) malloc(4 + CHALLENGESIZE);
			rfbRandomBytes((unsigned char*)tmp);
			passwds_new[0] = tmp;
			screen->passwordCheck = rfbCheckPasswordByList;
		}
		passwds_new[2] = NULL;

		if (*p == '\0') {
			passwds_new[1] = NULL;
		}

		screen->authPasswdData = (void*) passwds_new;
		rfbLog("remote_cmd: changed view only passwd.\n");
		goto done;
	}
	if (strstr(p, "trayembed") == p) { /* skip-cmd-list */
		unsigned long id;
		NOTAPP

		COLON_CHECK("trayembed:")
		p += strlen("trayembed:");
		if (scan_hexdec(p, &id)) {
			tray_request = (Window) id;
			tray_unembed = 0;
			rfbLog("remote_cmd: will try to embed 0x%x in"
			    " the system tray.\n", id);
		}
		goto done;
	}
	if (strstr(p, "trayunembed") == p) { /* skip-cmd-list */
		unsigned long id;
		NOTAPP

		COLON_CHECK("trayunembed:")
		p += strlen("trayunembed:");
		if (scan_hexdec(p, &id)) {
			tray_request = (Window) id;
			tray_unembed = 1;
			rfbLog("remote_cmd: will try to unembed 0x%x out"
			    " of the system tray.\n", id);
		}
		goto done;
	}
	if (query) {
		/* read-only variables that can only be queried: */

		if (!strcmp(p, "display")) {
			if (raw_fb) {
				snprintf(buf, bufn, "aro=%s:rawfb:%p",
				    p, raw_fb_addr);
			} else if (! dpy) {
				snprintf(buf, bufn, "aro=%s:", p);
			} else {
				char *d;
				d = DisplayString(dpy);
				if (! d) d = "unknown";
				if (*d == ':') {
					snprintf(buf, bufn, "aro=%s:%s%s", p,
					    this_host(), d);
				} else {
					snprintf(buf, bufn, "aro=%s:%s", p, d);
				}
			}
			goto qry;
		}
		if (!strcmp(p, "vncdisplay")) {
			snprintf(buf, bufn, "aro=%s:%s", p,
			    NONUL(vnc_desktop_name));
			goto qry;
		}
		if (!strcmp(p, "icon_mode")) {
			snprintf(buf, bufn, "aro=%s:%d", p, icon_mode);
			goto qry;
		}
		if (!strcmp(p, "autoport")) {
			snprintf(buf, bufn, "aro=%s:%d", p, auto_port);
			goto qry;
		}
		if (!strcmp(p, "loop") || !strcmp(p, "loopbg")) {
			snprintf(buf, bufn, "aro=%s:%d", p, 0);
			goto qry;
		}
		if (!strcmp(p, "desktopname")) {
			snprintf(buf, bufn, "aro=%s:%s", p,
			    NONUL(rfb_desktop_name));
			goto qry;
		}
		if (!strcmp(p, "guess_desktop")) {
			snprintf(buf, bufn, "aro=%s:%s", p,
			    NONUL(guess_desktop()));
			goto qry;
		}
		if (!strcmp(p, "guess_dbus")) {
			snprintf(buf, bufn, "aro=%s:%s", p,
			    NONUL(dbus_session()));
			goto qry;
		}
		if (!strcmp(p, "http_url")) {
			if (!screen) {
				snprintf(buf, bufn, "aro=%s:", p);
			} else if (screen->httpListenSock > -1) {
				snprintf(buf, bufn, "aro=%s:http://%s:%d", p,
				    NONUL(screen->thisHost), screen->httpPort);
			} else {
				snprintf(buf, bufn, "aro=%s:%s", p,
				    "http_not_active");
			}
			goto qry;
		}
		if (!strcmp(p, "auth") || !strcmp(p, "xauth")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(auth_file));
			goto qry;
		}
		if (!strcmp(p, "users")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(users_list));
			goto qry;
		}
		if (!strcmp(p, "rootshift")) {
			snprintf(buf, bufn, "aro=%s:%d", p, rootshift);
			goto qry;
		}
		if (!strcmp(p, "clipshift")) {
			snprintf(buf, bufn, "aro=%s:%d", p, clipshift);
			goto qry;
		}
		if (!strcmp(p, "scale_str")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(scale_str));
			goto qry;
		}
		if (!strcmp(p, "scaled_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scaled_x);
			goto qry;
		}
		if (!strcmp(p, "scaled_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scaled_y);
			goto qry;
		}
		if (!strcmp(p, "scale_numer")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scale_numer);
			goto qry;
		}
		if (!strcmp(p, "scale_denom")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scale_denom);
			goto qry;
		}
		if (!strcmp(p, "scale_fac_x")) {
			snprintf(buf, bufn, "aro=%s:%f", p, scale_fac_x);
			goto qry;
		}
		if (!strcmp(p, "scale_fac_y")) {
			snprintf(buf, bufn, "aro=%s:%f", p, scale_fac_y);
			goto qry;
		}
		if (!strcmp(p, "scaling_blend")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scaling_blend);
			goto qry;
		}
		if (!strcmp(p, "scaling_nomult4")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scaling_nomult4);
			goto qry;
		}
		if (!strcmp(p, "scaling_pad")) {
			snprintf(buf, bufn, "aro=%s:%d", p, scaling_pad);
			goto qry;
		}
		if (!strcmp(p, "scaling_interpolate")) {
			snprintf(buf, bufn, "aro=%s:%d", p,
			    scaling_interpolate);
			goto qry;
		}
		if (!strcmp(p, "inetd")) {
			snprintf(buf, bufn, "aro=%s:%d", p, inetd);
			goto qry;
		}
		if (!strcmp(p, "privremote")) {
			snprintf(buf, bufn, "aro=%s:%d", p, priv_remote);
			goto qry;
		}
		if (!strcmp(p, "unsafe")) {
			snprintf(buf, bufn, "aro=%s:%d", p, !safe_remote_only);
			goto qry;
		}
		if (!strcmp(p, "safer")) {
			snprintf(buf, bufn, "aro=%s:%d", p, more_safe);
			goto qry;
		}
		if (!strcmp(p, "nocmds")) {
			snprintf(buf, bufn, "aro=%s:%d", p, no_external_cmds);
			goto qry;
		}
		if (!strcmp(p, "passwdfile")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(passwdfile));
			goto qry;
		}
		if (!strcmp(p, "unixpw")) {
			snprintf(buf, bufn, "aro=%s:%d", p, unixpw);
			goto qry;
		}
		if (!strcmp(p, "unixpw_nis")) {
			snprintf(buf, bufn, "aro=%s:%d", p, unixpw_nis);
			goto qry;
		}
		if (!strcmp(p, "unixpw_list")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(unixpw_list));
			goto qry;
		}
		if (!strcmp(p, "ssl")) {
			snprintf(buf, bufn, "aro=%s:%d", p, use_openssl);
			goto qry;
		}
		if (!strcmp(p, "ssl_pem")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(openssl_pem));
			goto qry;
		}
		if (!strcmp(p, "sslverify")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(ssl_verify));
			goto qry;
		}
		if (!strcmp(p, "stunnel")) {
			snprintf(buf, bufn, "aro=%s:%d", p, use_stunnel);
			goto qry;
		}
		if (!strcmp(p, "stunnel_pem")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(stunnel_pem));
			goto qry;
		}
		if (!strcmp(p, "https")) {
			snprintf(buf, bufn, "aro=%s:%d", p, https_port_num);
			goto qry;
		}
		if (!strcmp(p, "httpsredir")) {
			snprintf(buf, bufn, "aro=%s:%d", p, https_port_redir);
			goto qry;
		}
		if (!strcmp(p, "usepw")) {
			snprintf(buf, bufn, "aro=%s:%d", p, usepw);
			goto qry;
		}
		if (!strcmp(p, "using_shm")) {
			snprintf(buf, bufn, "aro=%s:%d", p, !using_shm);
			goto qry;
		}
		if (!strcmp(p, "logfile") || !strcmp(p, "o")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(logfile));
			goto qry;
		}
		if (!strcmp(p, "flag")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(flagfile));
			goto qry;
		}
		if (!strcmp(p, "rmflag")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(rm_flagfile));
			goto qry;
		}
		if (!strcmp(p, "rc")) {
			char *s = rc_rcfile;
			if (rc_rcfile_default) {
				s = NULL;
			}
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(s));
			goto qry;
		}
		if (!strcmp(p, "norc")) {
			snprintf(buf, bufn, "aro=%s:%d", p, got_norc);
			goto qry;
		}
		if (!strcmp(p, "h") || !strcmp(p, "help") ||
		    !strcmp(p, "V") || !strcmp(p, "version") ||
		    !strcmp(p, "lastmod")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(lastmod));
			goto qry;
		}
		if (!strcmp(p, "bg")) {
			snprintf(buf, bufn, "aro=%s:%d", p, opts_bg);
			goto qry;
		}
		if (!strcmp(p, "sigpipe")) {
			snprintf(buf, bufn, "aro=%s:%s", p, NONUL(sigpipe));
			goto qry;
		}
		if (!strcmp(p, "threads")) {
			snprintf(buf, bufn, "aro=%s:%d", p, use_threads);
			goto qry;
		}
		if (!strcmp(p, "readrate")) {
			snprintf(buf, bufn, "aro=%s:%d", p, get_read_rate());
			goto qry;
		}
		if (!strcmp(p, "netrate")) {
			snprintf(buf, bufn, "aro=%s:%d", p, get_net_rate());
			goto qry;
		}
		if (!strcmp(p, "netlatency")) {
			snprintf(buf, bufn, "aro=%s:%d", p, get_net_latency());
			goto qry;
		}
		if (!strcmp(p, "pipeinput")) {
			snprintf(buf, bufn, "aro=%s:%s", p,
			    NONUL(pipeinput_str));
			goto qry;
		}
		if (!strcmp(p, "clients")) {
			char *str = list_clients();
			snprintf(buf, bufn, "aro=%s:%s", p, str);
			free(str);
			goto qry;
		}
		if (!strcmp(p, "client_count")) {
			snprintf(buf, bufn, "aro=%s:%d", p, client_count);
			goto qry;
		}
		if (!strcmp(p, "pid")) {
			snprintf(buf, bufn, "aro=%s:%d", p, (int) getpid());
			goto qry;
		}
		if (!strcmp(p, "ext_xtest")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xtest_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xtrap")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xtrap_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xrecord")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xrecord_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xkb")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xkb_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xshm")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xshm_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xinerama")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xinerama_present);
			goto qry;
		}
		if (!strcmp(p, "ext_overlay")) {
			snprintf(buf, bufn, "aro=%s:%d", p, overlay_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xfixes")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xfixes_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xdamage")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xdamage_present);
			goto qry;
		}
		if (!strcmp(p, "ext_xrandr")) {
			snprintf(buf, bufn, "aro=%s:%d", p, xrandr_present);
			goto qry;
		}
		if (!strcmp(p, "rootwin")) {
			snprintf(buf, bufn, "aro=%s:0x%x", p,
			    (unsigned int) rootwin);
			goto qry;
		}
		if (!strcmp(p, "num_buttons")) {
			snprintf(buf, bufn, "aro=%s:%d", p, num_buttons);
			goto qry;
		}
		if (!strcmp(p, "button_mask")) {
			snprintf(buf, bufn, "aro=%s:%d", p, button_mask);
			goto qry;
		}
		if (!strcmp(p, "mouse_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, cursor_x);
			goto qry;
		}
		if (!strcmp(p, "mouse_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, cursor_y);
			goto qry;
		}
		if (!strcmp(p, "grab_state")) {
			int ptr_grabbed, kbd_grabbed;

			grab_state(&ptr_grabbed, &kbd_grabbed);
			snprintf(buf, bufn, "aro=%s:%d,%d", p, ptr_grabbed, kbd_grabbed);
			if (dpy) {
				rfbLog("remote_cmd: ptr,kbd: %s\n", buf);
			}
			goto qry;
		}

		if (!strcmp(p, "pointer_pos")) {
			int px = -1, py = -1; 
			int wx, wy;
			unsigned int m;
			Window r, c;
			

			snprintf(buf, bufn, "aro=%s:%d,%d", p, px, py);
			if (!dpy) {
				goto qry;
			}
#if NO_X11
			goto qry;
#else
			X_LOCK;
			XQueryPointer_wr(dpy, rootwin, &r, &c, &px, &py, &wx, &wy, &m);
			X_UNLOCK;
#endif

			snprintf(buf, bufn, "aro=%s:%d,%d", p, px, py);
			rfbLog("remote_cmd: pointer_pos: %s\n", buf);
			goto qry;
		}
		if (!strcmp(p, "bpp")) {
			snprintf(buf, bufn, "aro=%s:%d", p, bpp);
			goto qry;
		}
		if (!strcmp(p, "depth")) {
			snprintf(buf, bufn, "aro=%s:%d", p, depth);
			goto qry;
		}
		if (!strcmp(p, "indexed_color")) {
			snprintf(buf, bufn, "aro=%s:%d", p, indexed_color);
			goto qry;
		}
		if (!strcmp(p, "dpy_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, dpy_x);
			goto qry;
		}
		if (!strcmp(p, "dpy_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, dpy_y);
			goto qry;
		}
		if (!strcmp(p, "wdpy_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, wdpy_x);
			goto qry;
		}
		if (!strcmp(p, "wdpy_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, wdpy_y);
			goto qry;
		}
		if (!strcmp(p, "off_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, off_x);
			goto qry;
		}
		if (!strcmp(p, "off_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, off_y);
			goto qry;
		}
		if (!strcmp(p, "cdpy_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, cdpy_x);
			goto qry;
		}
		if (!strcmp(p, "cdpy_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, cdpy_y);
			goto qry;
		}
		if (!strcmp(p, "coff_x")) {
			snprintf(buf, bufn, "aro=%s:%d", p, coff_x);
			goto qry;
		}
		if (!strcmp(p, "coff_y")) {
			snprintf(buf, bufn, "aro=%s:%d", p, coff_y);
			goto qry;
		}
		if (!strcmp(p, "rfbauth")) {
			NOTAPPRO
			goto qry;
		}
		if (!strcmp(p, "passwd")) {
			NOTAPPRO
			goto qry;
		}
		if (!strcmp(p, "viewpasswd")) {
			NOTAPPRO
			goto qry;
		}
		if (1) {
			NOTAPP
			goto qry;
		}
		goto done;
	}
	if (1) {
		char tmp[100];
		NOTAPP
		rfbLog("remote_cmd: warning unknown\n");
		strncpy(tmp, p, 90);
		rfbLog("command \"%s\"\n", tmp);
		goto done;
	}

	done:

	if (*buf == '\0') {
		sprintf(buf, "%s", "ack=1");
	}

	qry:

	if (stringonly) {
		return strdup(buf);
	} else if (client_connect_file) {
		FILE *out = fopen(client_connect_file, "w");
		if (out != NULL) {
			fprintf(out, "%s\n", buf);
			fclose(out);
			usleep(20*1000);
		}
	} else {
		if (dpy) {	/* raw_fb hack */
			X_LOCK;
			set_x11vnc_remote_prop(buf);
			XFlush_wr(dpy);
			X_UNLOCK;
		}
	}
#endif	/* REMOTE_CONTROL */
	return NULL;
}