local.c - tmux - Rivoreo Source Code Repositories

 /* $Id: local.c,v 1.23 2007-11-26 20:36:30 nicm Exp $ */

 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include <sys/types.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>

 #include <curses.h>
 #include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
 #define TTYDEFCHARS
 /* glibc requires unistd.h before termios.h for TTYDEFCHARS. */
 #include <unistd.h>
 #include <termios.h>
 #include <term.h>

 #include "tmux.h"

 /*
  * Functions to translate input and write output to the local client terminal.
  * This file should probably be called tty or terminal.c.
  */

 int	local_cmp(const void *, const void *);
 int	local_putc(int);
 void	local_putp(const char *);
 void	local_attributes(u_char, u_char);
 u_char	local_translate_acs(u_char);

 /* Local key types and key codes. */
 struct local_key {
 	const char	*name;
 	char		*string;
 	size_t		 size;
 	int	 	 code;
 };
 struct local_key local_keys[] = {
 	{ "ka1",   NULL, 0, KEYC_A1 },
 	{ "ka3",   NULL, 0, KEYC_A3 },
 	{ "kb2",   NULL, 0, KEYC_B2 },
 	{ "kbeg",  NULL, 0, KEYC_BEG },
 	{ "kcbt",  NULL, 0, KEYC_BTAB },
 	{ "kc1",   NULL, 0, KEYC_C1 },
 	{ "kc3",   NULL, 0, KEYC_C3 },
 	{ "kcan",  NULL, 0, KEYC_CANCEL },
 	{ "ktbc",  NULL, 0, KEYC_CATAB },
 	{ "kclr",  NULL, 0, KEYC_CLEAR },
 	{ "kclo",  NULL, 0, KEYC_CLOSE },
 	{ "kcmd",  NULL, 0, KEYC_COMMAND },
 	{ "kcpy",  NULL, 0, KEYC_COPY },
 	{ "kcrt",  NULL, 0, KEYC_CREATE },
 	{ "kctab", NULL, 0, KEYC_CTAB },
 	{ "kdch1", NULL, 0, KEYC_DC },
 	{ "kdl1",  NULL, 0, KEYC_DL },
 	{ "kcud1", NULL, 0, KEYC_DOWN },
 	{ "krmir", NULL, 0, KEYC_EIC },
 	{ "kend",  NULL, 0, KEYC_END },
 	{ "kent",  NULL, 0, KEYC_ENTER },
 	{ "kel",   NULL, 0, KEYC_EOL },
 	{ "ked",   NULL, 0, KEYC_EOS },
 	{ "kext",  NULL, 0, KEYC_EXIT },
 	{ "kf0",   NULL, 0, KEYC_F0 },
 	{ "kf1",   NULL, 0, KEYC_F1 },
 	{ "kf10",  NULL, 0, KEYC_F10 },
 	{ "kf11",  NULL, 0, KEYC_F11 },
 	{ "kf12",  NULL, 0, KEYC_F12 },
 	{ "kf13",  NULL, 0, KEYC_F13 },
 	{ "kf14",  NULL, 0, KEYC_F14 },
 	{ "kf15",  NULL, 0, KEYC_F15 },
 	{ "kf16",  NULL, 0, KEYC_F16 },
 	{ "kf17",  NULL, 0, KEYC_F17 },
 	{ "kf18",  NULL, 0, KEYC_F18 },
 	{ "kf19",  NULL, 0, KEYC_F19 },
 	{ "kf2",   NULL, 0, KEYC_F2 },
 	{ "kf20",  NULL, 0, KEYC_F20 },
 	{ "kf21",  NULL, 0, KEYC_F21 },
 	{ "kf22",  NULL, 0, KEYC_F22 },
 	{ "kf23",  NULL, 0, KEYC_F23 },
 	{ "kf24",  NULL, 0, KEYC_F24 },
 	{ "kf25",  NULL, 0, KEYC_F25 },
 	{ "kf26",  NULL, 0, KEYC_F26 },
 	{ "kf27",  NULL, 0, KEYC_F27 },
 	{ "kf28",  NULL, 0, KEYC_F28 },
 	{ "kf29",  NULL, 0, KEYC_F29 },
 	{ "kf3",   NULL, 0, KEYC_F3 },
 	{ "kf30",  NULL, 0, KEYC_F30 },
 	{ "kf31",  NULL, 0, KEYC_F31 },
 	{ "kf32",  NULL, 0, KEYC_F32 },
 	{ "kf33",  NULL, 0, KEYC_F33 },
 	{ "kf34",  NULL, 0, KEYC_F34 },
 	{ "kf35",  NULL, 0, KEYC_F35 },
 	{ "kf36",  NULL, 0, KEYC_F36 },
 	{ "kf37",  NULL, 0, KEYC_F37 },
 	{ "kf38",  NULL, 0, KEYC_F38 },
 	{ "kf39",  NULL, 0, KEYC_F39 },
 	{ "kf4",   NULL, 0, KEYC_F4 },
 	{ "kf40",  NULL, 0, KEYC_F40 },
 	{ "kf41",  NULL, 0, KEYC_F41 },
 	{ "kf42",  NULL, 0, KEYC_F42 },
 	{ "kf43",  NULL, 0, KEYC_F43 },
 	{ "kf44",  NULL, 0, KEYC_F44 },
 	{ "kf45",  NULL, 0, KEYC_F45 },
 	{ "kf46",  NULL, 0, KEYC_F46 },
 	{ "kf47",  NULL, 0, KEYC_F47 },
 	{ "kf48",  NULL, 0, KEYC_F48 },
 	{ "kf49",  NULL, 0, KEYC_F49 },
 	{ "kf5",   NULL, 0, KEYC_F5 },
 	{ "kf50",  NULL, 0, KEYC_F50 },
 	{ "kf51",  NULL, 0, KEYC_F51 },
 	{ "kf52",  NULL, 0, KEYC_F52 },
 	{ "kf53",  NULL, 0, KEYC_F53 },
 	{ "kf54",  NULL, 0, KEYC_F54 },
 	{ "kf55",  NULL, 0, KEYC_F55 },
 	{ "kf56",  NULL, 0, KEYC_F56 },
 	{ "kf57",  NULL, 0, KEYC_F57 },
 	{ "kf58",  NULL, 0, KEYC_F58 },
 	{ "kf59",  NULL, 0, KEYC_F59 },
 	{ "kf6",   NULL, 0, KEYC_F6 },
 	{ "kf60",  NULL, 0, KEYC_F60 },
 	{ "kf61",  NULL, 0, KEYC_F61 },
 	{ "kf62",  NULL, 0, KEYC_F62 },
 	{ "kf63",  NULL, 0, KEYC_F63 },
 	{ "kf7",   NULL, 0, KEYC_F7 },
 	{ "kf8",   NULL, 0, KEYC_F8 },
 	{ "kf9",   NULL, 0, KEYC_F9 },
 	{ "kfnd",  NULL, 0, KEYC_FIND },
 	{ "khlp",  NULL, 0, KEYC_HELP },
 	{ "khome", NULL, 0, KEYC_HOME },
 	{ "kich1", NULL, 0, KEYC_IC },
 	{ "kil1",  NULL, 0, KEYC_IL },
 	{ "kcub1", NULL, 0, KEYC_LEFT },
 	{ "kll",   NULL, 0, KEYC_LL },
 	{ "kmrk",  NULL, 0, KEYC_MARK },
 	{ "kmsg",  NULL, 0, KEYC_MESSAGE },
 	{ "kmov",  NULL, 0, KEYC_MOVE },
 	{ "knxt",  NULL, 0, KEYC_NEXT },
 	{ "knp",   NULL, 0, KEYC_NPAGE },
 	{ "kopn",  NULL, 0, KEYC_OPEN },
 	{ "kopt",  NULL, 0, KEYC_OPTIONS },
 	{ "kpp",   NULL, 0, KEYC_PPAGE },
 	{ "kprv",  NULL, 0, KEYC_PREVIOUS },
 	{ "kprt",  NULL, 0, KEYC_PRINT },
 	{ "krdo",  NULL, 0, KEYC_REDO },
 	{ "kref",  NULL, 0, KEYC_REFERENCE },
 	{ "krfr",  NULL, 0, KEYC_REFRESH },
 	{ "krpl",  NULL, 0, KEYC_REPLACE },
 	{ "krst",  NULL, 0, KEYC_RESTART },
 	{ "kres",  NULL, 0, KEYC_RESUME },
 	{ "kcuf1", NULL, 0, KEYC_RIGHT },
 	{ "ksav",  NULL, 0, KEYC_SAVE },
 	{ "kBEG",  NULL, 0, KEYC_SBEG },
 	{ "kCAN",  NULL, 0, KEYC_SCANCEL },
 	{ "kCMD",  NULL, 0, KEYC_SCOMMAND },
 	{ "kCPY",  NULL, 0, KEYC_SCOPY },
 	{ "kCRT",  NULL, 0, KEYC_SCREATE },
 	{ "kDC",   NULL, 0, KEYC_SDC },
 	{ "kDL",   NULL, 0, KEYC_SDL },
 	{ "kslt",  NULL, 0, KEYC_SELECT },
 	{ "kEND",  NULL, 0, KEYC_SEND },
 	{ "kEOL",  NULL, 0, KEYC_SEOL },
 	{ "kEXT",  NULL, 0, KEYC_SEXIT },
 	{ "kind",  NULL, 0, KEYC_SF },
 	{ "kFND",  NULL, 0, KEYC_SFIND },
 	{ "kHLP",  NULL, 0, KEYC_SHELP },
 	{ "kHOM",  NULL, 0, KEYC_SHOME },
 	{ "kIC",   NULL, 0, KEYC_SIC },
 	{ "kLFT",  NULL, 0, KEYC_SLEFT },
 	{ "kMSG",  NULL, 0, KEYC_SMESSAGE },
 	{ "kMOV",  NULL, 0, KEYC_SMOVE },
 	{ "kNXT",  NULL, 0, KEYC_SNEXT },
 	{ "kOPT",  NULL, 0, KEYC_SOPTIONS },
 	{ "kPRV",  NULL, 0, KEYC_SPREVIOUS },
 	{ "kPRT",  NULL, 0, KEYC_SPRINT },
 	{ "kri",   NULL, 0, KEYC_SR },
 	{ "kRDO",  NULL, 0, KEYC_SREDO },
 	{ "kRPL",  NULL, 0, KEYC_SREPLACE },
 	{ "kRIT",  NULL, 0, KEYC_SRIGHT },
 	{ "kRES",  NULL, 0, KEYC_SRSUME },
 	{ "kSAV",  NULL, 0, KEYC_SSAVE },
 	{ "kSPD",  NULL, 0, KEYC_SSUSPEND },
 	{ "khts",  NULL, 0, KEYC_STAB },
 	{ "kUND",  NULL, 0, KEYC_SUNDO },
 	{ "kspd",  NULL, 0, KEYC_SUSPEND },
 	{ "kund",  NULL, 0, KEYC_UNDO },
 	{ "kcuu1", NULL, 0, KEYC_UP },
 	{ "pmous", NULL, 0, KEYC_MOUSE },
 	{ NULL,    NULL, 0, KEYC_NONE }
 };

 /* tty file descriptor and local terminal buffers. */
 int		 local_fd = -1;
 int		 local_log = -1;
 struct buffer	*local_in;
 struct buffer	*local_out;
 struct termios	 local_tio;
 u_char		 local_attr;
 u_char		 local_colr;

 /* Initialise local terminal. */
 int
 local_init(struct buffer **in, struct buffer **out)
 {
 	char		       *tty, *path;
 	const char	       *name;
 	int		  	mode, error;
 	struct termios	  	tio;
 	struct local_key       *lk;
 	u_int			i, j;
 	static const char *const reqd[] = {
 		"carriage_return",
 		"change_scroll_region",
 		"clear_screen",
 		"clr_bol",
 		"clr_eol",
 		"cursor_address",
 		"cursor_left",
 		"cursor_down",
 		"parm_dch",
 		"parm_delete_line",
 		"parm_down_cursor",
 		"parm_ich",
 		"parm_insert_line",
 		"parm_left_cursor",
 		"parm_right_cursor",
 		"parm_up_cursor",
 		"scroll_reverse",
 		NULL
 	};

 	if ((tty = ttyname(STDIN_FILENO)) == NULL)
 		fatal("ttyname failed");
 	if ((local_fd = open(tty, O_RDWR)) == -1)
 		fatal("open failed");
 	if ((mode = fcntl(local_fd, F_GETFL)) == -1)
 		fatal("fcntl failed");
 	if (fcntl(local_fd, F_SETFL, mode|O_NONBLOCK) == -1)
 		fatal("fcntl failed");

 	if ((name = getenv("TERM")) == NULL || *name == '\0')
 		name = "unknown";
 	if (newterm(name, stdout, stdin) == NULL) {
 		log_warnx("error opening terminal: %s", name);
 		return (-1);
 	}
 	for (i = 0; reqd[i] != NULL; i++) {
 		error = 0;

 		for (j = 0; strfnames[j] != NULL; j++) {
 			if (strcmp(strfnames[j], reqd[i]) == 0) {
 				if (strcodes[j] == NULL)
 					error = -1;
 				break;
 			}
 		}
 		if (error != -1) {
 			for (j = 0; numfnames[j] != NULL; j++) {
 				if (strcmp(numfnames[j], reqd[i]) == 0) {
 					if (numcodes[j] == NULL)
 						error = -1;
 					break;
 				}
 			}
 		}
 		if (error != -1) {
 			for (j = 0; boolfnames[j] != NULL; j++) {
 				if (strcmp(boolfnames[j], reqd[i]) == 0) {
 					if (boolcodes[j] == NULL)
 						error = -1;
 					break;
 				}
 			}
 		}

 		if (error == -1) {
 			log_warnx("required capability missing: %s", reqd[i]);
 			return (-1);
 		}
 	}

 	*in = local_in = buffer_create(BUFSIZ);
 	*out = local_out = buffer_create(BUFSIZ);

 	if (tcgetattr(local_fd, &local_tio) != 0)
 		fatal("tcgetattr failed");
 	memset(&tio, 0, sizeof tio);
 	tio.c_iflag = TTYDEF_IFLAG & ~(IXON|IXOFF|ICRNL|INLCR);
 	tio.c_oflag = TTYDEF_OFLAG & ~(OPOST|ONLCR|OCRNL|ONLRET);
 	tio.c_lflag =
 	    TTYDEF_LFLAG & ~(IEXTEN|ICANON|ECHO|ECHOE|ECHOKE|ECHOCTL|ISIG);
 	tio.c_cflag = TTYDEF_CFLAG;
 	memcpy(&tio.c_cc, ttydefchars, sizeof tio.c_cc);
 	cfsetspeed(&tio, TTYDEF_SPEED);
 	if (tcsetattr(local_fd, TCSANOW, &tio) != 0)
 		fatal("tcsetattr failed");

 	if (enter_ca_mode != NULL)
 		local_putp(enter_ca_mode);
 	if (keypad_xmit != NULL)
 		local_putp(keypad_xmit);
 	if (ena_acs != NULL)
 		local_putp(ena_acs);
 	local_putp(clear_screen);

 	for (lk = local_keys; lk->name != NULL; lk++) {
 		lk->string = tigetstr(lk->name);
 		if (lk->string == (char *) -1 || lk->string == (char *) 0)
 			lk->string = NULL;
 		else {
 			lk->size = strlen(lk->string);
 			log_debug("string for %s (%d): \"%s\", length %zu",
 			    lk->name, lk->code, lk->string, lk->size);
 		}
 	}
 	qsort(local_keys, sizeof local_keys /
 	    sizeof local_keys[0], sizeof local_keys[0], local_cmp);

 	local_attr = 0;
 	local_colr = 0x88;

 	if (debug_level > 2) {
 		xasprintf(
 		    &path, "%s-output-%ld.log", __progname,(long) getpid());
 		local_log = open(
 		    path, O_RDWR|O_APPEND|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
 		xfree(path);
 	}

 	return (local_fd);
 }

 /* Compare keys. */
 int
 local_cmp(const void *ptr1, const void *ptr2)
 {
 	const struct local_key *lk1 = ptr1, *lk2 = ptr2;

 	if (lk1->string == NULL && lk2->string == NULL)
 		return (0);
 	if (lk1->string == NULL)
 		return (1);
 	if (lk2->string == NULL)
 		return (-1);
 	return (lk2->size - lk1->size);
 }

 /* Tidy up and reset local terminal. */
 void
 local_done(void)
 {
 	struct winsize	ws;

 	buffer_destroy(local_in);
 	buffer_destroy(local_out);

 	if (tcsetattr(local_fd, TCSANOW, &local_tio) != 0)
 		fatal("tcsetattr failed");
 	close(local_fd);

 	if (local_log != -1)
 		close(local_log);

 	if (change_scroll_region != NULL) {
 		if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1)
 			fatal("ioctl(TIOCGWINSZ)");
 		putp(tparm(change_scroll_region, 0, ws.ws_row - 1));
 	}

 	endwin();
 	if (keypad_local != NULL)
 		putp(keypad_local);	/* not local_putp */
 	if (exit_ca_mode != NULL)
 		putp(exit_ca_mode);
 	putp(clear_screen);
 	if (cursor_normal != NULL)
 		putp(cursor_normal);
 	if (exit_attribute_mode != NULL)
 		putp(exit_attribute_mode);
 }

 /* Put a character. Used as parameter to tputs. */
 int
 local_putc(int c)
 {
 	u_char	ch = c;

 	if (c < 0 || c > (int) UCHAR_MAX)
 		fatalx("invalid character");

 	if (local_log != -1)
 		write(local_log, &ch, 1);
 	if (acs_chars != NULL && local_attr & ATTR_DRAWING) {
 		ch = local_translate_acs(ch);
 		if (ch == '\0')
 			ch = '?';
 	}

 	buffer_write(local_out, &ch, 1);
 	return (c);
 }

 /* Put terminfo string. */
 void
 local_putp(const char *s)
 {
 	if (s == NULL)
 		fatalx("null pointer");

 	tputs(s, 1, local_putc);
 }

 /* Return waiting keys if any. */
 int
 local_key(void)
 {
 	struct local_key	*lk;
 	u_int			 i;
 	size_t			 size;

 	size = BUFFER_USED(local_in);
 	if (size == 0)
 		return (KEYC_NONE);

 	i = 0;
 	lk = local_keys;
 	while (lk->string != NULL) {
 		if (strncmp(BUFFER_OUT(local_in), lk->string, size) == 0) {
 			if (size < lk->size)
 				return (KEYC_NONE);
 			log_debug("got key: "
 			    "%s %d \"%s\"", lk->name, lk->code, lk->string);
 			buffer_remove(local_in, lk->size);
 			return (lk->code);
 		}

 		i++;
 		lk = local_keys + i;
 	}

 	return (input_extract8(local_in));
 }

 /* Display output data. */
 void
 local_output(struct buffer *b, size_t size)
 {
 	u_char		 ch;
 	uint16_t	 ua, ub;

 	while (size != 0) {
 		if (size < 1)
 			break;
 		size--;
 		ch = input_extract8(b);
 		if (ch != '\e') {
 			switch (ch) {
 			case '\n':	/* LF */
 				local_putp(cursor_down);
 				break;
 			case '\r':	/* CR */
 				local_putp(carriage_return);
 				break;
 			case '\007':	/* BEL */
 				if (bell != NULL)
 					local_putp(bell);
 				break;
 			case '\010':	/* BS */
 				local_putp(cursor_left);
 				break;
 			default:
 				local_putc(ch);
 				break;
 			}
 			continue;
 		}

 		if (size < 1)
 			fatalx("underflow");
 		size--;
 		ch = input_extract8(b);

 		log_debug("received code %hhu", ch);
 		switch (ch) {
 		case CODE_CURSORUP:
 			if (size < 2)
 				fatalx("CODE_CURSORUP underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_up_cursor, ua));
 			break;
 		case CODE_CURSORDOWN:
 			if (size < 2)
 				fatalx("CODE_CURSORDOWN underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_down_cursor, ua));
 			break;
 		case CODE_CURSORRIGHT:
 			if (size < 2)
 				fatalx("CODE_CURSORRIGHT underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_right_cursor, ua));
 			break;
 		case CODE_CURSORLEFT:
 			if (size < 2)
 				fatalx("CODE_CURSORLEFT underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_left_cursor, ua));
 			break;
 		case CODE_CURSORMOVE:
 			if (size < 4)
 				fatalx("CODE_CURSORMOVE underflow");
 			size -= 4;
 			ua = input_extract16(b);
 			ub = input_extract16(b);
 			local_putp(tparm(cursor_address, ua - 1, ub - 1));
 			break;
 		case CODE_CLEARENDOFLINE:
 			local_putp(clr_eol);
 			break;
 		case CODE_CLEARSTARTOFLINE:
 			local_putp(clr_bol);
 			break;
 		case CODE_CLEARLINE:
 			local_putp(clr_eol);	/* XXX */
 			break;
 		case CODE_INSERTLINE:
 			if (size < 2)
 				fatalx("CODE_INSERTLINE underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_insert_line, ua));
 			break;
 		case CODE_DELETELINE:
 			if (size < 2)
 				fatalx("CODE_DELETELINE underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_delete_line, ua));
 			break;
 		case CODE_INSERTCHARACTER:
 			if (size < 2)
 				fatalx("CODE_INSERTCHARACTER underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_ich, ua));
 			break;
 		case CODE_DELETECHARACTER:
 			if (size < 2)
 				fatalx("CODE_DELETECHARACTER underflow");
 			size -= 2;
 			ua = input_extract16(b);
 			local_putp(tparm(parm_dch, ua));
 			break;
 		case CODE_CURSORON:
 			if (cursor_normal != NULL)
 				local_putp(cursor_normal);
 			break;
 		case CODE_CURSOROFF:
 			if (cursor_invisible != NULL)
 				local_putp(cursor_invisible);
 			break;
 		case CODE_REVERSEINDEX:
 			local_putp(scroll_reverse);
 			break;
 		case CODE_SCROLLREGION:
 			if (size < 4)
 				fatalx("CODE_SCROLLREGION underflow");
 			size -= 4;
 			ua = input_extract16(b);
 			ub = input_extract16(b);
 			local_putp(tparm(change_scroll_region, ua - 1, ub - 1));
 			break;
 		case CODE_INSERTON:
 			if (enter_insert_mode != NULL)
 				local_putp(enter_insert_mode);
 			break;
 		case CODE_INSERTOFF:
 			if (exit_insert_mode != NULL)
 				local_putp(exit_insert_mode);
 			break;
 		case CODE_KCURSOROFF:
 			/*
 			t = tigetstr("CE");
 			if (t != (char *) 0 && t != (char *) -1)
 				local_putp(t);
 			*/
 			break;
 		case CODE_KCURSORON:
 			/*
 			t = tigetstr("CS");
 			if (t != (char *) 0 && t != (char *) -1)
 				local_putp(t);
 			*/
 			break;
 		case CODE_KKEYPADOFF:
 			/*
 			  if (keypad_local != NULL)
 			  local_putp(keypad_local);
 			*/
 			break;
 		case CODE_KKEYPADON:
 			/*
 			  if (keypad_xmit != NULL)
 			  local_putp(keypad_xmit);
 			*/
 			break;
 		case CODE_TITLE:
 			if (size < 2)
 				fatalx("CODE_TITLE underflow");
 			size -= 2;
 			ua = input_extract16(b);

 			if (size < ua)
 				fatalx("CODE_TITLE underflow");
 			size -= ua;
 			buffer_remove(b, ua);
 			break;
 		case CODE_ATTRIBUTES:
 			if (size < 4)
 				fatalx("CODE_ATTRIBUTES underflow");
 			size -= 4;
 			ua = input_extract16(b);
 			ub = input_extract16(b);

 			local_attributes(ua, ub);
 			break;
 		}
 	}
 }

 void
 local_attributes(u_char attr, u_char colr)
 {
 	u_char	fg, bg;

 	if (attr == local_attr && colr == local_colr)
 		return;

 	/* If any bits are being cleared, reset everything. */
 	if (local_attr & ~attr) {
 		if ((local_attr & ATTR_DRAWING) &&
 		    exit_alt_charset_mode != NULL)
 			local_putp(exit_alt_charset_mode);
 		local_putp(exit_attribute_mode);
 		local_colr = 0x88;
 		local_attr = 0;
 	}

 	/* Filter out bits already set. */
 	attr &= ~local_attr;
 	local_attr |= attr;

 	if ((attr & ATTR_BRIGHT) && enter_bold_mode != NULL)
 		local_putp(enter_bold_mode);
 	if ((attr & ATTR_DIM) && enter_dim_mode != NULL)
 		local_putp(enter_dim_mode);
 	if ((attr & ATTR_ITALICS) && enter_standout_mode != NULL)
 		local_putp(enter_standout_mode);
 	if ((attr & ATTR_UNDERSCORE) && enter_underline_mode != NULL)
 		local_putp(enter_underline_mode);
 	if ((attr & ATTR_BLINK) && enter_blink_mode != NULL)
 		local_putp(enter_blink_mode);
 	if ((attr & ATTR_REVERSE) && enter_reverse_mode != NULL)
 		local_putp(enter_reverse_mode);
 	if ((attr & ATTR_HIDDEN) && enter_secure_mode != NULL)
 		local_putp(enter_secure_mode);
 	if ((attr & ATTR_DRAWING) && enter_alt_charset_mode != NULL)
 		local_putp(enter_alt_charset_mode);

 	fg = (colr >> 4) & 0xf;
 	if (fg != ((local_colr >> 4) & 0xf)) {
 		if (tigetflag("AX") == TRUE) {
 			if (fg == 7)
 				fg = 8;
 		} else {
 			if (fg == 8)
 				fg = 7;
 		}

 		if (fg == 8)
 			local_putp("\e[39m");
 		else if (set_a_foreground != NULL)
 			local_putp(tparm(set_a_foreground, fg));
 	}

 	bg = colr & 0xf;
 	if (bg != (local_colr & 0xf)) {
 		if (tigetflag("AX") == TRUE) {
 			if (bg == 0)
 				bg = 8;
 		} else {
 			if (bg == 8)
 				bg = 0;
 		}

 		if (bg == 8)
 			local_putp("\e[49m");
 		else if (set_a_background != NULL)
 			local_putp(tparm(set_a_background, bg));
 	}

 	local_colr = colr;
 }

 u_char
 local_translate_acs(u_char ch)
 {
 	switch (ch) {
 	case '~':
 		return (ACS_BULLET);
 	case '}':
 		return (ACS_STERLING);
 	case '|':
 		return (ACS_NEQUAL);
 	case '{':
 		return (ACS_PI);
 	case 'z':
 		return (ACS_GEQUAL);
 	case 'y':
 		return (ACS_LEQUAL);
 	case 'x':
 		return (ACS_VLINE);
 	case 'w':
 		return (ACS_TTEE);
 	case 'v':
 		return (ACS_BTEE);
 	case 'u':
 		return (ACS_RTEE);
 	case 't':
 		return (ACS_LTEE);
 	case 's':
 		return (ACS_S9);
 	case 'r':
 		return (ACS_S7);
 	case 'q':
 		return (ACS_HLINE);
 	case 'p':
 		return (ACS_S3);
 	case 'o':
 		return (ACS_S1);
 	case 'n':
 		return (ACS_PLUS);
 	case 'm':
 		return (ACS_LLCORNER);
 	case 'l':
 		return (ACS_ULCORNER);
 	case 'k':
 		return (ACS_URCORNER);
 	case 'j':
 		return (ACS_LRCORNER);
 	case 'i':
 		return (ACS_LANTERN);
 	case 'h':
 		return (ACS_BOARD);
 	case 'g':
 		return (ACS_PLMINUS);
 	case 'f':
 		return (ACS_DEGREE);
 	case 'a':
 		return (ACS_CKBOARD);
 	case '`':
 		return (ACS_DIAMOND);
 	case '0':
 		return (ACS_BLOCK);
 	case '.':
 		return (ACS_DARROW);
 	case '-':
 		return (ACS_UARROW);
 	case ',':
 		return (ACS_LARROW);
 	case '+':
 		return (ACS_RARROW);
 	}
 	return (ch);
 }
	/* $Id: local.c,v 1.23 2007-11-26 20:36:30 nicm Exp $ */

	/*
	* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
	*
	* Permission to use, copy, modify, and distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
	* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
	* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include <sys/types.h>
	#include <sys/ioctl.h>
	#include <sys/stat.h>

	#include <curses.h>
	#include <fcntl.h>
	#include <stdlib.h>
	#include <string.h>
	#define TTYDEFCHARS
	/* glibc requires unistd.h before termios.h for TTYDEFCHARS. */
	#include <unistd.h>
	#include <termios.h>
	#include <term.h>

	#include "tmux.h"

	/*
	* Functions to translate input and write output to the local client terminal.
	* This file should probably be called tty or terminal.c.
	*/

	int local_cmp(const void , const void );
	int local_putc(int);
	void local_putp(const char *);
	void local_attributes(u_char, u_char);
	u_char local_translate_acs(u_char);

	/* Local key types and key codes. */
	struct local_key {
	const char *name;
	char *string;
	size_t size;
	int code;
	};
	struct local_key local_keys[] = {
	{ "ka1", NULL, 0, KEYC_A1 },
	{ "ka3", NULL, 0, KEYC_A3 },
	{ "kb2", NULL, 0, KEYC_B2 },
	{ "kbeg", NULL, 0, KEYC_BEG },
	{ "kcbt", NULL, 0, KEYC_BTAB },
	{ "kc1", NULL, 0, KEYC_C1 },
	{ "kc3", NULL, 0, KEYC_C3 },
	{ "kcan", NULL, 0, KEYC_CANCEL },
	{ "ktbc", NULL, 0, KEYC_CATAB },
	{ "kclr", NULL, 0, KEYC_CLEAR },
	{ "kclo", NULL, 0, KEYC_CLOSE },
	{ "kcmd", NULL, 0, KEYC_COMMAND },
	{ "kcpy", NULL, 0, KEYC_COPY },
	{ "kcrt", NULL, 0, KEYC_CREATE },
	{ "kctab", NULL, 0, KEYC_CTAB },
	{ "kdch1", NULL, 0, KEYC_DC },
	{ "kdl1", NULL, 0, KEYC_DL },
	{ "kcud1", NULL, 0, KEYC_DOWN },
	{ "krmir", NULL, 0, KEYC_EIC },
	{ "kend", NULL, 0, KEYC_END },
	{ "kent", NULL, 0, KEYC_ENTER },
	{ "kel", NULL, 0, KEYC_EOL },
	{ "ked", NULL, 0, KEYC_EOS },
	{ "kext", NULL, 0, KEYC_EXIT },
	{ "kf0", NULL, 0, KEYC_F0 },
	{ "kf1", NULL, 0, KEYC_F1 },
	{ "kf10", NULL, 0, KEYC_F10 },
	{ "kf11", NULL, 0, KEYC_F11 },
	{ "kf12", NULL, 0, KEYC_F12 },
	{ "kf13", NULL, 0, KEYC_F13 },
	{ "kf14", NULL, 0, KEYC_F14 },
	{ "kf15", NULL, 0, KEYC_F15 },
	{ "kf16", NULL, 0, KEYC_F16 },
	{ "kf17", NULL, 0, KEYC_F17 },
	{ "kf18", NULL, 0, KEYC_F18 },
	{ "kf19", NULL, 0, KEYC_F19 },
	{ "kf2", NULL, 0, KEYC_F2 },
	{ "kf20", NULL, 0, KEYC_F20 },
	{ "kf21", NULL, 0, KEYC_F21 },
	{ "kf22", NULL, 0, KEYC_F22 },
	{ "kf23", NULL, 0, KEYC_F23 },
	{ "kf24", NULL, 0, KEYC_F24 },
	{ "kf25", NULL, 0, KEYC_F25 },
	{ "kf26", NULL, 0, KEYC_F26 },
	{ "kf27", NULL, 0, KEYC_F27 },
	{ "kf28", NULL, 0, KEYC_F28 },
	{ "kf29", NULL, 0, KEYC_F29 },
	{ "kf3", NULL, 0, KEYC_F3 },
	{ "kf30", NULL, 0, KEYC_F30 },
	{ "kf31", NULL, 0, KEYC_F31 },
	{ "kf32", NULL, 0, KEYC_F32 },
	{ "kf33", NULL, 0, KEYC_F33 },
	{ "kf34", NULL, 0, KEYC_F34 },
	{ "kf35", NULL, 0, KEYC_F35 },
	{ "kf36", NULL, 0, KEYC_F36 },
	{ "kf37", NULL, 0, KEYC_F37 },
	{ "kf38", NULL, 0, KEYC_F38 },
	{ "kf39", NULL, 0, KEYC_F39 },
	{ "kf4", NULL, 0, KEYC_F4 },
	{ "kf40", NULL, 0, KEYC_F40 },
	{ "kf41", NULL, 0, KEYC_F41 },
	{ "kf42", NULL, 0, KEYC_F42 },
	{ "kf43", NULL, 0, KEYC_F43 },
	{ "kf44", NULL, 0, KEYC_F44 },
	{ "kf45", NULL, 0, KEYC_F45 },
	{ "kf46", NULL, 0, KEYC_F46 },
	{ "kf47", NULL, 0, KEYC_F47 },
	{ "kf48", NULL, 0, KEYC_F48 },
	{ "kf49", NULL, 0, KEYC_F49 },
	{ "kf5", NULL, 0, KEYC_F5 },
	{ "kf50", NULL, 0, KEYC_F50 },
	{ "kf51", NULL, 0, KEYC_F51 },
	{ "kf52", NULL, 0, KEYC_F52 },
	{ "kf53", NULL, 0, KEYC_F53 },
	{ "kf54", NULL, 0, KEYC_F54 },
	{ "kf55", NULL, 0, KEYC_F55 },
	{ "kf56", NULL, 0, KEYC_F56 },
	{ "kf57", NULL, 0, KEYC_F57 },
	{ "kf58", NULL, 0, KEYC_F58 },
	{ "kf59", NULL, 0, KEYC_F59 },
	{ "kf6", NULL, 0, KEYC_F6 },
	{ "kf60", NULL, 0, KEYC_F60 },
	{ "kf61", NULL, 0, KEYC_F61 },
	{ "kf62", NULL, 0, KEYC_F62 },
	{ "kf63", NULL, 0, KEYC_F63 },
	{ "kf7", NULL, 0, KEYC_F7 },
	{ "kf8", NULL, 0, KEYC_F8 },
	{ "kf9", NULL, 0, KEYC_F9 },
	{ "kfnd", NULL, 0, KEYC_FIND },
	{ "khlp", NULL, 0, KEYC_HELP },
	{ "khome", NULL, 0, KEYC_HOME },
	{ "kich1", NULL, 0, KEYC_IC },
	{ "kil1", NULL, 0, KEYC_IL },
	{ "kcub1", NULL, 0, KEYC_LEFT },
	{ "kll", NULL, 0, KEYC_LL },
	{ "kmrk", NULL, 0, KEYC_MARK },
	{ "kmsg", NULL, 0, KEYC_MESSAGE },
	{ "kmov", NULL, 0, KEYC_MOVE },
	{ "knxt", NULL, 0, KEYC_NEXT },
	{ "knp", NULL, 0, KEYC_NPAGE },
	{ "kopn", NULL, 0, KEYC_OPEN },
	{ "kopt", NULL, 0, KEYC_OPTIONS },
	{ "kpp", NULL, 0, KEYC_PPAGE },
	{ "kprv", NULL, 0, KEYC_PREVIOUS },
	{ "kprt", NULL, 0, KEYC_PRINT },
	{ "krdo", NULL, 0, KEYC_REDO },
	{ "kref", NULL, 0, KEYC_REFERENCE },
	{ "krfr", NULL, 0, KEYC_REFRESH },
	{ "krpl", NULL, 0, KEYC_REPLACE },
	{ "krst", NULL, 0, KEYC_RESTART },
	{ "kres", NULL, 0, KEYC_RESUME },
	{ "kcuf1", NULL, 0, KEYC_RIGHT },
	{ "ksav", NULL, 0, KEYC_SAVE },
	{ "kBEG", NULL, 0, KEYC_SBEG },
	{ "kCAN", NULL, 0, KEYC_SCANCEL },
	{ "kCMD", NULL, 0, KEYC_SCOMMAND },
	{ "kCPY", NULL, 0, KEYC_SCOPY },
	{ "kCRT", NULL, 0, KEYC_SCREATE },
	{ "kDC", NULL, 0, KEYC_SDC },
	{ "kDL", NULL, 0, KEYC_SDL },
	{ "kslt", NULL, 0, KEYC_SELECT },
	{ "kEND", NULL, 0, KEYC_SEND },
	{ "kEOL", NULL, 0, KEYC_SEOL },
	{ "kEXT", NULL, 0, KEYC_SEXIT },
	{ "kind", NULL, 0, KEYC_SF },
	{ "kFND", NULL, 0, KEYC_SFIND },
	{ "kHLP", NULL, 0, KEYC_SHELP },
	{ "kHOM", NULL, 0, KEYC_SHOME },
	{ "kIC", NULL, 0, KEYC_SIC },
	{ "kLFT", NULL, 0, KEYC_SLEFT },
	{ "kMSG", NULL, 0, KEYC_SMESSAGE },
	{ "kMOV", NULL, 0, KEYC_SMOVE },
	{ "kNXT", NULL, 0, KEYC_SNEXT },
	{ "kOPT", NULL, 0, KEYC_SOPTIONS },
	{ "kPRV", NULL, 0, KEYC_SPREVIOUS },
	{ "kPRT", NULL, 0, KEYC_SPRINT },
	{ "kri", NULL, 0, KEYC_SR },
	{ "kRDO", NULL, 0, KEYC_SREDO },
	{ "kRPL", NULL, 0, KEYC_SREPLACE },
	{ "kRIT", NULL, 0, KEYC_SRIGHT },
	{ "kRES", NULL, 0, KEYC_SRSUME },
	{ "kSAV", NULL, 0, KEYC_SSAVE },
	{ "kSPD", NULL, 0, KEYC_SSUSPEND },
	{ "khts", NULL, 0, KEYC_STAB },
	{ "kUND", NULL, 0, KEYC_SUNDO },
	{ "kspd", NULL, 0, KEYC_SUSPEND },
	{ "kund", NULL, 0, KEYC_UNDO },
	{ "kcuu1", NULL, 0, KEYC_UP },
	{ "pmous", NULL, 0, KEYC_MOUSE },
	{ NULL, NULL, 0, KEYC_NONE }
	};

	/* tty file descriptor and local terminal buffers. */
	int local_fd = -1;
	int local_log = -1;
	struct buffer *local_in;
	struct buffer *local_out;
	struct termios local_tio;
	u_char local_attr;
	u_char local_colr;

	/* Initialise local terminal. */
	int
	local_init(struct buffer in, struct buffer out)
	{
	char tty, path;
	const char *name;
	int mode, error;
	struct termios tio;
	struct local_key *lk;
	u_int i, j;
	static const char *const reqd[] = {
	"carriage_return",
	"change_scroll_region",
	"clear_screen",
	"clr_bol",
	"clr_eol",
	"cursor_address",
	"cursor_left",
	"cursor_down",
	"parm_dch",
	"parm_delete_line",
	"parm_down_cursor",
	"parm_ich",
	"parm_insert_line",
	"parm_left_cursor",
	"parm_right_cursor",
	"parm_up_cursor",
	"scroll_reverse",
	NULL
	};

	if ((tty = ttyname(STDIN_FILENO)) == NULL)
	fatal("ttyname failed");
	if ((local_fd = open(tty, O_RDWR)) == -1)
	fatal("open failed");
	if ((mode = fcntl(local_fd, F_GETFL)) == -1)
	fatal("fcntl failed");
	if (fcntl(local_fd, F_SETFL, mode\|O_NONBLOCK) == -1)
	fatal("fcntl failed");

	if ((name = getenv("TERM")) == NULL \|\| *name == '\0')
	name = "unknown";
	if (newterm(name, stdout, stdin) == NULL) {
	log_warnx("error opening terminal: %s", name);
	return (-1);
	}
	for (i = 0; reqd[i] != NULL; i++) {
	error = 0;

	for (j = 0; strfnames[j] != NULL; j++) {
	if (strcmp(strfnames[j], reqd[i]) == 0) {
	if (strcodes[j] == NULL)
	error = -1;
	break;
	}
	}
	if (error != -1) {
	for (j = 0; numfnames[j] != NULL; j++) {
	if (strcmp(numfnames[j], reqd[i]) == 0) {
	if (numcodes[j] == NULL)
	error = -1;
	break;
	}
	}
	}
	if (error != -1) {
	for (j = 0; boolfnames[j] != NULL; j++) {
	if (strcmp(boolfnames[j], reqd[i]) == 0) {
	if (boolcodes[j] == NULL)
	error = -1;
	break;
	}
	}
	}

	if (error == -1) {
	log_warnx("required capability missing: %s", reqd[i]);
	return (-1);
	}
	}

	*in = local_in = buffer_create(BUFSIZ);
	*out = local_out = buffer_create(BUFSIZ);

	if (tcgetattr(local_fd, &local_tio) != 0)
	fatal("tcgetattr failed");
	memset(&tio, 0, sizeof tio);
	tio.c_iflag = TTYDEF_IFLAG & ~(IXON\|IXOFF\|ICRNL\|INLCR);
	tio.c_oflag = TTYDEF_OFLAG & ~(OPOST\|ONLCR\|OCRNL\|ONLRET);
	tio.c_lflag =
	TTYDEF_LFLAG & ~(IEXTEN\|ICANON\|ECHO\|ECHOE\|ECHOKE\|ECHOCTL\|ISIG);
	tio.c_cflag = TTYDEF_CFLAG;
	memcpy(&tio.c_cc, ttydefchars, sizeof tio.c_cc);
	cfsetspeed(&tio, TTYDEF_SPEED);
	if (tcsetattr(local_fd, TCSANOW, &tio) != 0)
	fatal("tcsetattr failed");

	if (enter_ca_mode != NULL)
	local_putp(enter_ca_mode);
	if (keypad_xmit != NULL)
	local_putp(keypad_xmit);
	if (ena_acs != NULL)
	local_putp(ena_acs);
	local_putp(clear_screen);

	for (lk = local_keys; lk->name != NULL; lk++) {
	lk->string = tigetstr(lk->name);
	if (lk->string == (char ) -1 \|\| lk->string == (char ) 0)
	lk->string = NULL;
	else {
	lk->size = strlen(lk->string);
	log_debug("string for %s (%d): \"%s\", length %zu",
	lk->name, lk->code, lk->string, lk->size);
	}
	}
	qsort(local_keys, sizeof local_keys /
	sizeof local_keys[0], sizeof local_keys[0], local_cmp);

	local_attr = 0;
	local_colr = 0x88;

	if (debug_level > 2) {
	xasprintf(
	&path, "%s-output-%ld.log", __progname,(long) getpid());
	local_log = open(
	path, O_RDWR\|O_APPEND\|O_CREAT\|O_TRUNC, S_IRUSR\|S_IWUSR);
	xfree(path);
	}

	return (local_fd);
	}

	/* Compare keys. */
	int
	local_cmp(const void ptr1, const void ptr2)
	{
	const struct local_key lk1 = ptr1, lk2 = ptr2;

	if (lk1->string == NULL && lk2->string == NULL)
	return (0);
	if (lk1->string == NULL)
	return (1);
	if (lk2->string == NULL)
	return (-1);
	return (lk2->size - lk1->size);
	}

	/* Tidy up and reset local terminal. */
	void
	local_done(void)
	{
	struct winsize ws;

	buffer_destroy(local_in);
	buffer_destroy(local_out);

	if (tcsetattr(local_fd, TCSANOW, &local_tio) != 0)
	fatal("tcsetattr failed");
	close(local_fd);

	if (local_log != -1)
	close(local_log);

	if (change_scroll_region != NULL) {
	if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1)
	fatal("ioctl(TIOCGWINSZ)");
	putp(tparm(change_scroll_region, 0, ws.ws_row - 1));
	}

	endwin();
	if (keypad_local != NULL)
	putp(keypad_local); /* not local_putp */
	if (exit_ca_mode != NULL)
	putp(exit_ca_mode);
	putp(clear_screen);
	if (cursor_normal != NULL)
	putp(cursor_normal);
	if (exit_attribute_mode != NULL)
	putp(exit_attribute_mode);
	}

	/* Put a character. Used as parameter to tputs. */
	int
	local_putc(int c)
	{
	u_char ch = c;

	if (c < 0 \|\| c > (int) UCHAR_MAX)
	fatalx("invalid character");

	if (local_log != -1)
	write(local_log, &ch, 1);
	if (acs_chars != NULL && local_attr & ATTR_DRAWING) {
	ch = local_translate_acs(ch);
	if (ch == '\0')
	ch = '?';
	}

	buffer_write(local_out, &ch, 1);
	return (c);
	}

	/* Put terminfo string. */
	void
	local_putp(const char *s)
	{
	if (s == NULL)
	fatalx("null pointer");

	tputs(s, 1, local_putc);
	}

	/* Return waiting keys if any. */
	int
	local_key(void)
	{
	struct local_key *lk;
	u_int i;
	size_t size;

	size = BUFFER_USED(local_in);
	if (size == 0)
	return (KEYC_NONE);

	i = 0;
	lk = local_keys;
	while (lk->string != NULL) {
	if (strncmp(BUFFER_OUT(local_in), lk->string, size) == 0) {
	if (size < lk->size)
	return (KEYC_NONE);
	log_debug("got key: "
	"%s %d \"%s\"", lk->name, lk->code, lk->string);
	buffer_remove(local_in, lk->size);
	return (lk->code);
	}

	i++;
	lk = local_keys + i;
	}

	return (input_extract8(local_in));
	}

	/* Display output data. */
	void
	local_output(struct buffer *b, size_t size)
	{
	u_char ch;
	uint16_t ua, ub;

	while (size != 0) {
	if (size < 1)
	break;
	size--;
	ch = input_extract8(b);
	if (ch != '\e') {
	switch (ch) {
	case '\n': /* LF */
	local_putp(cursor_down);
	break;
	case '\r': /* CR */
	local_putp(carriage_return);
	break;
	case '\007': /* BEL */
	if (bell != NULL)
	local_putp(bell);
	break;
	case '\010': /* BS */
	local_putp(cursor_left);
	break;
	default:
	local_putc(ch);
	break;
	}
	continue;
	}

	if (size < 1)
	fatalx("underflow");
	size--;
	ch = input_extract8(b);

	log_debug("received code %hhu", ch);
	switch (ch) {
	case CODE_CURSORUP:
	if (size < 2)
	fatalx("CODE_CURSORUP underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_up_cursor, ua));
	break;
	case CODE_CURSORDOWN:
	if (size < 2)
	fatalx("CODE_CURSORDOWN underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_down_cursor, ua));
	break;
	case CODE_CURSORRIGHT:
	if (size < 2)
	fatalx("CODE_CURSORRIGHT underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_right_cursor, ua));
	break;
	case CODE_CURSORLEFT:
	if (size < 2)
	fatalx("CODE_CURSORLEFT underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_left_cursor, ua));
	break;
	case CODE_CURSORMOVE:
	if (size < 4)
	fatalx("CODE_CURSORMOVE underflow");
	size -= 4;
	ua = input_extract16(b);
	ub = input_extract16(b);
	local_putp(tparm(cursor_address, ua - 1, ub - 1));
	break;
	case CODE_CLEARENDOFLINE:
	local_putp(clr_eol);
	break;
	case CODE_CLEARSTARTOFLINE:
	local_putp(clr_bol);
	break;
	case CODE_CLEARLINE:
	local_putp(clr_eol); /* XXX */
	break;
	case CODE_INSERTLINE:
	if (size < 2)
	fatalx("CODE_INSERTLINE underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_insert_line, ua));
	break;
	case CODE_DELETELINE:
	if (size < 2)
	fatalx("CODE_DELETELINE underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_delete_line, ua));
	break;
	case CODE_INSERTCHARACTER:
	if (size < 2)
	fatalx("CODE_INSERTCHARACTER underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_ich, ua));
	break;
	case CODE_DELETECHARACTER:
	if (size < 2)
	fatalx("CODE_DELETECHARACTER underflow");
	size -= 2;
	ua = input_extract16(b);
	local_putp(tparm(parm_dch, ua));
	break;
	case CODE_CURSORON:
	if (cursor_normal != NULL)
	local_putp(cursor_normal);
	break;
	case CODE_CURSOROFF:
	if (cursor_invisible != NULL)
	local_putp(cursor_invisible);
	break;
	case CODE_REVERSEINDEX:
	local_putp(scroll_reverse);
	break;
	case CODE_SCROLLREGION:
	if (size < 4)
	fatalx("CODE_SCROLLREGION underflow");
	size -= 4;
	ua = input_extract16(b);
	ub = input_extract16(b);
	local_putp(tparm(change_scroll_region, ua - 1, ub - 1));
	break;
	case CODE_INSERTON:
	if (enter_insert_mode != NULL)
	local_putp(enter_insert_mode);
	break;
	case CODE_INSERTOFF:
	if (exit_insert_mode != NULL)
	local_putp(exit_insert_mode);
	break;
	case CODE_KCURSOROFF:
	/*
	t = tigetstr("CE");
	if (t != (char ) 0 && t != (char ) -1)
	local_putp(t);
	*/
	break;
	case CODE_KCURSORON:
	/*
	t = tigetstr("CS");
	if (t != (char ) 0 && t != (char ) -1)
	local_putp(t);
	*/
	break;
	case CODE_KKEYPADOFF:
	/*
	if (keypad_local != NULL)
	local_putp(keypad_local);
	*/
	break;
	case CODE_KKEYPADON:
	/*
	if (keypad_xmit != NULL)
	local_putp(keypad_xmit);
	*/
	break;
	case CODE_TITLE:
	if (size < 2)
	fatalx("CODE_TITLE underflow");
	size -= 2;
	ua = input_extract16(b);

	if (size < ua)
	fatalx("CODE_TITLE underflow");
	size -= ua;
	buffer_remove(b, ua);
	break;
	case CODE_ATTRIBUTES:
	if (size < 4)
	fatalx("CODE_ATTRIBUTES underflow");
	size -= 4;
	ua = input_extract16(b);
	ub = input_extract16(b);

	local_attributes(ua, ub);
	break;
	}
	}
	}

	void
	local_attributes(u_char attr, u_char colr)
	{
	u_char fg, bg;

	if (attr == local_attr && colr == local_colr)
	return;

	/* If any bits are being cleared, reset everything. */
	if (local_attr & ~attr) {
	if ((local_attr & ATTR_DRAWING) &&
	exit_alt_charset_mode != NULL)
	local_putp(exit_alt_charset_mode);
	local_putp(exit_attribute_mode);
	local_colr = 0x88;
	local_attr = 0;
	}

	/* Filter out bits already set. */
	attr &= ~local_attr;
	local_attr \|= attr;

	if ((attr & ATTR_BRIGHT) && enter_bold_mode != NULL)
	local_putp(enter_bold_mode);
	if ((attr & ATTR_DIM) && enter_dim_mode != NULL)
	local_putp(enter_dim_mode);
	if ((attr & ATTR_ITALICS) && enter_standout_mode != NULL)
	local_putp(enter_standout_mode);
	if ((attr & ATTR_UNDERSCORE) && enter_underline_mode != NULL)
	local_putp(enter_underline_mode);
	if ((attr & ATTR_BLINK) && enter_blink_mode != NULL)
	local_putp(enter_blink_mode);
	if ((attr & ATTR_REVERSE) && enter_reverse_mode != NULL)
	local_putp(enter_reverse_mode);
	if ((attr & ATTR_HIDDEN) && enter_secure_mode != NULL)
	local_putp(enter_secure_mode);
	if ((attr & ATTR_DRAWING) && enter_alt_charset_mode != NULL)
	local_putp(enter_alt_charset_mode);

	fg = (colr >> 4) & 0xf;
	if (fg != ((local_colr >> 4) & 0xf)) {
	if (tigetflag("AX") == TRUE) {
	if (fg == 7)
	fg = 8;
	} else {
	if (fg == 8)
	fg = 7;
	}

	if (fg == 8)
	local_putp("\e[39m");
	else if (set_a_foreground != NULL)
	local_putp(tparm(set_a_foreground, fg));
	}

	bg = colr & 0xf;
	if (bg != (local_colr & 0xf)) {
	if (tigetflag("AX") == TRUE) {
	if (bg == 0)
	bg = 8;
	} else {
	if (bg == 8)
	bg = 0;
	}

	if (bg == 8)
	local_putp("\e[49m");
	else if (set_a_background != NULL)
	local_putp(tparm(set_a_background, bg));
	}

	local_colr = colr;
	}

	u_char
	local_translate_acs(u_char ch)
	{
	switch (ch) {
	case '~':
	return (ACS_BULLET);
	case '}':
	return (ACS_STERLING);
	case '\|':
	return (ACS_NEQUAL);
	case '{':
	return (ACS_PI);
	case 'z':
	return (ACS_GEQUAL);
	case 'y':
	return (ACS_LEQUAL);
	case 'x':
	return (ACS_VLINE);
	case 'w':
	return (ACS_TTEE);
	case 'v':
	return (ACS_BTEE);
	case 'u':
	return (ACS_RTEE);
	case 't':
	return (ACS_LTEE);
	case 's':
	return (ACS_S9);
	case 'r':
	return (ACS_S7);
	case 'q':
	return (ACS_HLINE);
	case 'p':
	return (ACS_S3);
	case 'o':
	return (ACS_S1);
	case 'n':
	return (ACS_PLUS);
	case 'm':
	return (ACS_LLCORNER);
	case 'l':
	return (ACS_ULCORNER);
	case 'k':
	return (ACS_URCORNER);
	case 'j':
	return (ACS_LRCORNER);
	case 'i':
	return (ACS_LANTERN);
	case 'h':
	return (ACS_BOARD);
	case 'g':
	return (ACS_PLMINUS);
	case 'f':
	return (ACS_DEGREE);
	case 'a':
	return (ACS_CKBOARD);
	case '`':
	return (ACS_DIAMOND);
	case '0':
	return (ACS_BLOCK);
	case '.':
	return (ACS_DARROW);
	case '-':
	return (ACS_UARROW);
	case ',':
	return (ACS_LARROW);
	case '+':
	return (ACS_RARROW);
	}
	return (ch);
	}