GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/tmux/tty-term.c Lines: 0 198 0.0 %
Date: 2017-11-13 Branches: 0 133 0.0 %

Line Branch Exec Source
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/* $OpenBSD: tty-term.c,v 1.57 2017/08/27 08:33:55 nicm Exp $ */
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/*
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 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
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 *
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 * Permission to use, copy, modify, and distribute this software for any
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 * purpose with or without fee is hereby granted, provided that the above
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 * copyright notice and this permission notice appear in all copies.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 */
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#include <sys/types.h>
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#include <curses.h>
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#include <fnmatch.h>
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#include <stdlib.h>
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#include <string.h>
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#include <term.h>
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#include <vis.h>
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#include "tmux.h"
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static void	 tty_term_override(struct tty_term *, const char *);
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static char	*tty_term_strip(const char *);
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struct tty_terms tty_terms = LIST_HEAD_INITIALIZER(tty_terms);
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enum tty_code_type {
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	TTYCODE_NONE = 0,
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	TTYCODE_STRING,
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	TTYCODE_NUMBER,
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	TTYCODE_FLAG,
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};
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42
struct tty_code {
43
	enum tty_code_type	type;
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	union {
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		char	       *string;
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		int		number;
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		int		flag;
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	} value;
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};
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struct tty_term_code_entry {
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	enum tty_code_type	type;
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	const char	       *name;
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};
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static const struct tty_term_code_entry tty_term_codes[] = {
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	[TTYC_ACSC] = { TTYCODE_STRING, "acsc" },
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	[TTYC_AX] = { TTYCODE_FLAG, "AX" },
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	[TTYC_BCE] = { TTYCODE_FLAG, "bce" },
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	[TTYC_BEL] = { TTYCODE_STRING, "bel" },
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	[TTYC_BLINK] = { TTYCODE_STRING, "blink" },
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	[TTYC_BOLD] = { TTYCODE_STRING, "bold" },
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	[TTYC_CIVIS] = { TTYCODE_STRING, "civis" },
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	[TTYC_CLEAR] = { TTYCODE_STRING, "clear" },
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	[TTYC_CNORM] = { TTYCODE_STRING, "cnorm" },
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	[TTYC_COLORS] = { TTYCODE_NUMBER, "colors" },
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	[TTYC_CR] = { TTYCODE_STRING, "Cr" },
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	[TTYC_CSR] = { TTYCODE_STRING, "csr" },
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	[TTYC_CS] = { TTYCODE_STRING, "Cs" },
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	[TTYC_CUB1] = { TTYCODE_STRING, "cub1" },
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	[TTYC_CUB] = { TTYCODE_STRING, "cub" },
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	[TTYC_CUD1] = { TTYCODE_STRING, "cud1" },
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	[TTYC_CUD] = { TTYCODE_STRING, "cud" },
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	[TTYC_CUF1] = { TTYCODE_STRING, "cuf1" },
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	[TTYC_CUF] = { TTYCODE_STRING, "cuf" },
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	[TTYC_CUP] = { TTYCODE_STRING, "cup" },
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	[TTYC_CUU1] = { TTYCODE_STRING, "cuu1" },
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	[TTYC_CUU] = { TTYCODE_STRING, "cuu" },
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	[TTYC_CVVIS] = { TTYCODE_STRING, "cvvis" },
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	[TTYC_DCH1] = { TTYCODE_STRING, "dch1" },
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	[TTYC_DCH] = { TTYCODE_STRING, "dch" },
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	[TTYC_DIM] = { TTYCODE_STRING, "dim" },
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	[TTYC_DL1] = { TTYCODE_STRING, "dl1" },
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	[TTYC_DL] = { TTYCODE_STRING, "dl" },
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	[TTYC_E3] = { TTYCODE_STRING, "E3" },
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	[TTYC_ECH] = { TTYCODE_STRING, "ech" },
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	[TTYC_ED] = { TTYCODE_STRING, "ed" },
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	[TTYC_EL1] = { TTYCODE_STRING, "el1" },
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	[TTYC_EL] = { TTYCODE_STRING, "el" },
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	[TTYC_ENACS] = { TTYCODE_STRING, "enacs" },
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	[TTYC_FSL] = { TTYCODE_STRING, "fsl" },
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	[TTYC_HOME] = { TTYCODE_STRING, "home" },
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	[TTYC_HPA] = { TTYCODE_STRING, "hpa" },
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	[TTYC_ICH1] = { TTYCODE_STRING, "ich1" },
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	[TTYC_ICH] = { TTYCODE_STRING, "ich" },
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	[TTYC_IL1] = { TTYCODE_STRING, "il1" },
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	[TTYC_IL] = { TTYCODE_STRING, "il" },
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	[TTYC_INDN] = { TTYCODE_STRING, "indn" },
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	[TTYC_INVIS] = { TTYCODE_STRING, "invis" },
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	[TTYC_KCBT] = { TTYCODE_STRING, "kcbt" },
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	[TTYC_KCUB1] = { TTYCODE_STRING, "kcub1" },
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	[TTYC_KCUD1] = { TTYCODE_STRING, "kcud1" },
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	[TTYC_KCUF1] = { TTYCODE_STRING, "kcuf1" },
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	[TTYC_KCUU1] = { TTYCODE_STRING, "kcuu1" },
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	[TTYC_KDC2] = { TTYCODE_STRING, "kDC" },
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	[TTYC_KDC3] = { TTYCODE_STRING, "kDC3" },
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	[TTYC_KDC4] = { TTYCODE_STRING, "kDC4" },
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	[TTYC_KDC5] = { TTYCODE_STRING, "kDC5" },
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	[TTYC_KDC6] = { TTYCODE_STRING, "kDC6" },
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	[TTYC_KDC7] = { TTYCODE_STRING, "kDC7" },
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	[TTYC_KDCH1] = { TTYCODE_STRING, "kdch1" },
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	[TTYC_KDN2] = { TTYCODE_STRING, "kDN" }, /* not kDN2 */
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	[TTYC_KDN3] = { TTYCODE_STRING, "kDN3" },
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	[TTYC_KDN4] = { TTYCODE_STRING, "kDN4" },
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	[TTYC_KDN5] = { TTYCODE_STRING, "kDN5" },
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	[TTYC_KDN6] = { TTYCODE_STRING, "kDN6" },
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	[TTYC_KDN7] = { TTYCODE_STRING, "kDN7" },
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	[TTYC_KEND2] = { TTYCODE_STRING, "kEND" },
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	[TTYC_KEND3] = { TTYCODE_STRING, "kEND3" },
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	[TTYC_KEND4] = { TTYCODE_STRING, "kEND4" },
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	[TTYC_KEND5] = { TTYCODE_STRING, "kEND5" },
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	[TTYC_KEND6] = { TTYCODE_STRING, "kEND6" },
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	[TTYC_KEND7] = { TTYCODE_STRING, "kEND7" },
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	[TTYC_KEND] = { TTYCODE_STRING, "kend" },
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	[TTYC_KF10] = { TTYCODE_STRING, "kf10" },
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	[TTYC_KF11] = { TTYCODE_STRING, "kf11" },
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	[TTYC_KF12] = { TTYCODE_STRING, "kf12" },
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	[TTYC_KF13] = { TTYCODE_STRING, "kf13" },
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	[TTYC_KF14] = { TTYCODE_STRING, "kf14" },
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	[TTYC_KF15] = { TTYCODE_STRING, "kf15" },
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	[TTYC_KF16] = { TTYCODE_STRING, "kf16" },
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	[TTYC_KF17] = { TTYCODE_STRING, "kf17" },
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	[TTYC_KF18] = { TTYCODE_STRING, "kf18" },
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	[TTYC_KF19] = { TTYCODE_STRING, "kf19" },
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	[TTYC_KF1] = { TTYCODE_STRING, "kf1" },
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	[TTYC_KF20] = { TTYCODE_STRING, "kf20" },
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	[TTYC_KF21] = { TTYCODE_STRING, "kf21" },
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	[TTYC_KF22] = { TTYCODE_STRING, "kf22" },
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	[TTYC_KF23] = { TTYCODE_STRING, "kf23" },
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	[TTYC_KF24] = { TTYCODE_STRING, "kf24" },
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	[TTYC_KF25] = { TTYCODE_STRING, "kf25" },
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	[TTYC_KF26] = { TTYCODE_STRING, "kf26" },
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	[TTYC_KF27] = { TTYCODE_STRING, "kf27" },
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	[TTYC_KF28] = { TTYCODE_STRING, "kf28" },
145
	[TTYC_KF29] = { TTYCODE_STRING, "kf29" },
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	[TTYC_KF2] = { TTYCODE_STRING, "kf2" },
147
	[TTYC_KF30] = { TTYCODE_STRING, "kf30" },
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	[TTYC_KF31] = { TTYCODE_STRING, "kf31" },
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	[TTYC_KF32] = { TTYCODE_STRING, "kf32" },
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	[TTYC_KF33] = { TTYCODE_STRING, "kf33" },
151
	[TTYC_KF34] = { TTYCODE_STRING, "kf34" },
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	[TTYC_KF35] = { TTYCODE_STRING, "kf35" },
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	[TTYC_KF36] = { TTYCODE_STRING, "kf36" },
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	[TTYC_KF37] = { TTYCODE_STRING, "kf37" },
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	[TTYC_KF38] = { TTYCODE_STRING, "kf38" },
156
	[TTYC_KF39] = { TTYCODE_STRING, "kf39" },
157
	[TTYC_KF3] = { TTYCODE_STRING, "kf3" },
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	[TTYC_KF40] = { TTYCODE_STRING, "kf40" },
159
	[TTYC_KF41] = { TTYCODE_STRING, "kf41" },
160
	[TTYC_KF42] = { TTYCODE_STRING, "kf42" },
161
	[TTYC_KF43] = { TTYCODE_STRING, "kf43" },
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	[TTYC_KF44] = { TTYCODE_STRING, "kf44" },
163
	[TTYC_KF45] = { TTYCODE_STRING, "kf45" },
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	[TTYC_KF46] = { TTYCODE_STRING, "kf46" },
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	[TTYC_KF47] = { TTYCODE_STRING, "kf47" },
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	[TTYC_KF48] = { TTYCODE_STRING, "kf48" },
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	[TTYC_KF49] = { TTYCODE_STRING, "kf49" },
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	[TTYC_KF4] = { TTYCODE_STRING, "kf4" },
169
	[TTYC_KF50] = { TTYCODE_STRING, "kf50" },
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	[TTYC_KF51] = { TTYCODE_STRING, "kf51" },
171
	[TTYC_KF52] = { TTYCODE_STRING, "kf52" },
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	[TTYC_KF53] = { TTYCODE_STRING, "kf53" },
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	[TTYC_KF54] = { TTYCODE_STRING, "kf54" },
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	[TTYC_KF55] = { TTYCODE_STRING, "kf55" },
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	[TTYC_KF56] = { TTYCODE_STRING, "kf56" },
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	[TTYC_KF57] = { TTYCODE_STRING, "kf57" },
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	[TTYC_KF58] = { TTYCODE_STRING, "kf58" },
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	[TTYC_KF59] = { TTYCODE_STRING, "kf59" },
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	[TTYC_KF5] = { TTYCODE_STRING, "kf5" },
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	[TTYC_KF60] = { TTYCODE_STRING, "kf60" },
181
	[TTYC_KF61] = { TTYCODE_STRING, "kf61" },
182
	[TTYC_KF62] = { TTYCODE_STRING, "kf62" },
183
	[TTYC_KF63] = { TTYCODE_STRING, "kf63" },
184
	[TTYC_KF6] = { TTYCODE_STRING, "kf6" },
185
	[TTYC_KF7] = { TTYCODE_STRING, "kf7" },
186
	[TTYC_KF8] = { TTYCODE_STRING, "kf8" },
187
	[TTYC_KF9] = { TTYCODE_STRING, "kf9" },
188
	[TTYC_KHOM2] = { TTYCODE_STRING, "kHOM" },
189
	[TTYC_KHOM3] = { TTYCODE_STRING, "kHOM3" },
190
	[TTYC_KHOM4] = { TTYCODE_STRING, "kHOM4" },
191
	[TTYC_KHOM5] = { TTYCODE_STRING, "kHOM5" },
192
	[TTYC_KHOM6] = { TTYCODE_STRING, "kHOM6" },
193
	[TTYC_KHOM7] = { TTYCODE_STRING, "kHOM7" },
194
	[TTYC_KHOME] = { TTYCODE_STRING, "khome" },
195
	[TTYC_KIC2] = { TTYCODE_STRING, "kIC" },
196
	[TTYC_KIC3] = { TTYCODE_STRING, "kIC3" },
197
	[TTYC_KIC4] = { TTYCODE_STRING, "kIC4" },
198
	[TTYC_KIC5] = { TTYCODE_STRING, "kIC5" },
199
	[TTYC_KIC6] = { TTYCODE_STRING, "kIC6" },
200
	[TTYC_KIC7] = { TTYCODE_STRING, "kIC7" },
201
	[TTYC_KICH1] = { TTYCODE_STRING, "kich1" },
202
	[TTYC_KIND] = { TTYCODE_STRING, "kind" },
203
	[TTYC_KLFT2] = { TTYCODE_STRING, "kLFT" },
204
	[TTYC_KLFT3] = { TTYCODE_STRING, "kLFT3" },
205
	[TTYC_KLFT4] = { TTYCODE_STRING, "kLFT4" },
206
	[TTYC_KLFT5] = { TTYCODE_STRING, "kLFT5" },
207
	[TTYC_KLFT6] = { TTYCODE_STRING, "kLFT6" },
208
	[TTYC_KLFT7] = { TTYCODE_STRING, "kLFT7" },
209
	[TTYC_KMOUS] = { TTYCODE_STRING, "kmous" },
210
	[TTYC_KNP] = { TTYCODE_STRING, "knp" },
211
	[TTYC_KNXT2] = { TTYCODE_STRING, "kNXT" },
212
	[TTYC_KNXT3] = { TTYCODE_STRING, "kNXT3" },
213
	[TTYC_KNXT4] = { TTYCODE_STRING, "kNXT4" },
214
	[TTYC_KNXT5] = { TTYCODE_STRING, "kNXT5" },
215
	[TTYC_KNXT6] = { TTYCODE_STRING, "kNXT6" },
216
	[TTYC_KNXT7] = { TTYCODE_STRING, "kNXT7" },
217
	[TTYC_KPP] = { TTYCODE_STRING, "kpp" },
218
	[TTYC_KPRV2] = { TTYCODE_STRING, "kPRV" },
219
	[TTYC_KPRV3] = { TTYCODE_STRING, "kPRV3" },
220
	[TTYC_KPRV4] = { TTYCODE_STRING, "kPRV4" },
221
	[TTYC_KPRV5] = { TTYCODE_STRING, "kPRV5" },
222
	[TTYC_KPRV6] = { TTYCODE_STRING, "kPRV6" },
223
	[TTYC_KPRV7] = { TTYCODE_STRING, "kPRV7" },
224
	[TTYC_KRIT2] = { TTYCODE_STRING, "kRIT" },
225
	[TTYC_KRIT3] = { TTYCODE_STRING, "kRIT3" },
226
	[TTYC_KRIT4] = { TTYCODE_STRING, "kRIT4" },
227
	[TTYC_KRIT5] = { TTYCODE_STRING, "kRIT5" },
228
	[TTYC_KRIT6] = { TTYCODE_STRING, "kRIT6" },
229
	[TTYC_KRIT7] = { TTYCODE_STRING, "kRIT7" },
230
	[TTYC_KRI] = { TTYCODE_STRING, "kri" },
231
	[TTYC_KUP2] = { TTYCODE_STRING, "kUP" }, /* not kUP2 */
232
	[TTYC_KUP3] = { TTYCODE_STRING, "kUP3" },
233
	[TTYC_KUP4] = { TTYCODE_STRING, "kUP4" },
234
	[TTYC_KUP5] = { TTYCODE_STRING, "kUP5" },
235
	[TTYC_KUP6] = { TTYCODE_STRING, "kUP6" },
236
	[TTYC_KUP7] = { TTYCODE_STRING, "kUP7" },
237
	[TTYC_MS] = { TTYCODE_STRING, "Ms" },
238
	[TTYC_OP] = { TTYCODE_STRING, "op" },
239
	[TTYC_REV] = { TTYCODE_STRING, "rev" },
240
	[TTYC_RI] = { TTYCODE_STRING, "ri" },
241
	[TTYC_RMACS] = { TTYCODE_STRING, "rmacs" },
242
	[TTYC_RMCUP] = { TTYCODE_STRING, "rmcup" },
243
	[TTYC_RMKX] = { TTYCODE_STRING, "rmkx" },
244
	[TTYC_SETAB] = { TTYCODE_STRING, "setab" },
245
	[TTYC_SETAF] = { TTYCODE_STRING, "setaf" },
246
	[TTYC_SETRGBB] = { TTYCODE_STRING, "setrgbb" },
247
	[TTYC_SETRGBF] = { TTYCODE_STRING, "setrgbf" },
248
	[TTYC_SE] = { TTYCODE_STRING, "Se" },
249
	[TTYC_SGR0] = { TTYCODE_STRING, "sgr0" },
250
	[TTYC_SITM] = { TTYCODE_STRING, "sitm" },
251
	[TTYC_SMACS] = { TTYCODE_STRING, "smacs" },
252
	[TTYC_SMCUP] = { TTYCODE_STRING, "smcup" },
253
	[TTYC_SMKX] = { TTYCODE_STRING, "smkx" },
254
	[TTYC_SMSO] = { TTYCODE_STRING, "smso" },
255
	[TTYC_SMUL] = { TTYCODE_STRING, "smul" },
256
	[TTYC_SMXX] =  { TTYCODE_STRING, "smxx" },
257
	[TTYC_SS] = { TTYCODE_STRING, "Ss" },
258
	[TTYC_TC] = { TTYCODE_FLAG, "Tc" },
259
	[TTYC_TSL] = { TTYCODE_STRING, "tsl" },
260
	[TTYC_U8] = { TTYCODE_NUMBER, "U8" },
261
	[TTYC_VPA] = { TTYCODE_STRING, "vpa" },
262
	[TTYC_XENL] = { TTYCODE_FLAG, "xenl" },
263
	[TTYC_XT] = { TTYCODE_FLAG, "XT" },
264
};
265
266
u_int
267
tty_term_ncodes(void)
268
{
269
	return (nitems(tty_term_codes));
270
}
271
272
static char *
273
tty_term_strip(const char *s)
274
{
275
	const char     *ptr;
276
	static char	buf[BUFSIZ];
277
	size_t		len;
278
279
	/* Ignore strings with no padding. */
280
	if (strchr(s, '$') == NULL)
281
		return (xstrdup(s));
282
283
	len = 0;
284
	for (ptr = s; *ptr != '\0'; ptr++) {
285
		if (*ptr == '$' && *(ptr + 1) == '<') {
286
			while (*ptr != '\0' && *ptr != '>')
287
				ptr++;
288
			if (*ptr == '>')
289
				ptr++;
290
		}
291
292
		buf[len++] = *ptr;
293
		if (len == (sizeof buf) - 1)
294
			break;
295
	}
296
	buf[len] = '\0';
297
298
	return (xstrdup(buf));
299
}
300
301
static void
302
tty_term_override(struct tty_term *term, const char *override)
303
{
304
	const struct tty_term_code_entry	*ent;
305
	struct tty_code				*code;
306
	char					*next, *s, *copy, *cp, *value;
307
	const char				*errstr;
308
	u_int					 i;
309
	int					 n, remove;
310
311
	copy = next = xstrdup(override);
312
313
	s = strsep(&next, ":");
314
	if (s == NULL || next == NULL || fnmatch(s, term->name, 0) != 0) {
315
		free(copy);
316
		return;
317
	}
318
319
	while ((s = strsep(&next, ":")) != NULL) {
320
		if (*s == '\0')
321
			continue;
322
		value = NULL;
323
324
		remove = 0;
325
		if ((cp = strchr(s, '=')) != NULL) {
326
			*cp++ = '\0';
327
			value = xstrdup(cp);
328
			if (strunvis(value, cp) == -1) {
329
				free(value);
330
				value = xstrdup(cp);
331
			}
332
		} else if (s[strlen(s) - 1] == '@') {
333
			s[strlen(s) - 1] = '\0';
334
			remove = 1;
335
		} else
336
			value = xstrdup("");
337
338
		if (remove)
339
			log_debug("%s override: %s@", term->name, s);
340
		else
341
			log_debug("%s override: %s=%s", term->name, s, value);
342
343
		for (i = 0; i < tty_term_ncodes(); i++) {
344
			ent = &tty_term_codes[i];
345
			if (strcmp(s, ent->name) != 0)
346
				continue;
347
			code = &term->codes[i];
348
349
			if (remove) {
350
				code->type = TTYCODE_NONE;
351
				continue;
352
			}
353
			switch (ent->type) {
354
			case TTYCODE_NONE:
355
				break;
356
			case TTYCODE_STRING:
357
				if (code->type == TTYCODE_STRING)
358
					free(code->value.string);
359
				code->value.string = xstrdup(value);
360
				code->type = ent->type;
361
				break;
362
			case TTYCODE_NUMBER:
363
				n = strtonum(value, 0, INT_MAX, &errstr);
364
				if (errstr != NULL)
365
					break;
366
				code->value.number = n;
367
				code->type = ent->type;
368
				break;
369
			case TTYCODE_FLAG:
370
				code->value.flag = 1;
371
				code->type = ent->type;
372
				break;
373
			}
374
		}
375
376
		free(value);
377
	}
378
	free(s);
379
}
380
381
struct tty_term *
382
tty_term_find(char *name, int fd, char **cause)
383
{
384
	struct tty_term				*term;
385
	const struct tty_term_code_entry	*ent;
386
	struct tty_code				*code;
387
	struct options_entry			*o;
388
	u_int					 size, i;
389
	int		 			 n, error;
390
	const char				*s, *acs;
391
392
	LIST_FOREACH(term, &tty_terms, entry) {
393
		if (strcmp(term->name, name) == 0) {
394
			term->references++;
395
			return (term);
396
		}
397
	}
398
	log_debug("new term: %s", name);
399
400
	term = xmalloc(sizeof *term);
401
	term->name = xstrdup(name);
402
	term->references = 1;
403
	term->flags = 0;
404
	term->codes = xcalloc(tty_term_ncodes(), sizeof *term->codes);
405
	LIST_INSERT_HEAD(&tty_terms, term, entry);
406
407
	/* Set up curses terminal. */
408
	if (setupterm(name, fd, &error) != OK) {
409
		switch (error) {
410
		case 1:
411
			xasprintf(cause, "can't use hardcopy terminal: %s",
412
			    name);
413
			break;
414
		case 0:
415
			xasprintf(cause, "missing or unsuitable terminal: %s",
416
			    name);
417
			break;
418
		case -1:
419
			xasprintf(cause, "can't find terminfo database");
420
			break;
421
		default:
422
			xasprintf(cause, "unknown error");
423
			break;
424
		}
425
		goto error;
426
	}
427
428
	/* Fill in codes. */
429
	for (i = 0; i < tty_term_ncodes(); i++) {
430
		ent = &tty_term_codes[i];
431
432
		code = &term->codes[i];
433
		code->type = TTYCODE_NONE;
434
		switch (ent->type) {
435
		case TTYCODE_NONE:
436
			break;
437
		case TTYCODE_STRING:
438
			s = tigetstr((char *) ent->name);
439
			if (s == NULL || s == (char *) -1)
440
				break;
441
			code->type = TTYCODE_STRING;
442
			code->value.string = tty_term_strip(s);
443
			break;
444
		case TTYCODE_NUMBER:
445
			n = tigetnum((char *) ent->name);
446
			if (n == -1 || n == -2)
447
				break;
448
			code->type = TTYCODE_NUMBER;
449
			code->value.number = n;
450
			break;
451
		case TTYCODE_FLAG:
452
			n = tigetflag((char *) ent->name);
453
			if (n == -1)
454
				break;
455
			code->type = TTYCODE_FLAG;
456
			code->value.flag = n;
457
			break;
458
		}
459
	}
460
461
	/* Apply terminal overrides. */
462
	o = options_get_only(global_options, "terminal-overrides");
463
	if (options_array_size(o, &size) != -1) {
464
		for (i = 0; i < size; i++) {
465
			s = options_array_get(o, i);
466
			if (s != NULL)
467
				tty_term_override(term, s);
468
		}
469
	}
470
471
	/* Delete curses data. */
472
	del_curterm(cur_term);
473
474
	/* These are always required. */
475
	if (!tty_term_has(term, TTYC_CLEAR)) {
476
		xasprintf(cause, "terminal does not support clear");
477
		goto error;
478
	}
479
	if (!tty_term_has(term, TTYC_CUP)) {
480
		xasprintf(cause, "terminal does not support cup");
481
		goto error;
482
	}
483
484
	/* These can be emulated so one of the two is required. */
485
	if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) {
486
		xasprintf(cause, "terminal does not support cud1 or cud");
487
		goto error;
488
	}
489
490
	/* Figure out if we have 256. */
491
	if (tty_term_number(term, TTYC_COLORS) == 256)
492
		term->flags |= TERM_256COLOURS;
493
494
	/*
495
	 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1
496
	 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
497
	 *
498
	 * This is irritating, most notably because it is impossible to write
499
	 * to the very bottom-right of the screen without scrolling.
500
	 *
501
	 * Flag the terminal here and apply some workarounds in other places to
502
	 * do the best possible.
503
	 */
504
	if (!tty_term_flag(term, TTYC_XENL))
505
		term->flags |= TERM_EARLYWRAP;
506
507
	/* Generate ACS table. If none is present, use nearest ASCII. */
508
	memset(term->acs, 0, sizeof term->acs);
509
	if (tty_term_has(term, TTYC_ACSC))
510
		acs = tty_term_string(term, TTYC_ACSC);
511
	else
512
		acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~.";
513
	for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2)
514
		term->acs[(u_char) acs[0]][0] = acs[1];
515
516
	/* On terminals with xterm titles (XT), fill in tsl and fsl. */
517
	if (tty_term_flag(term, TTYC_XT) &&
518
	    !tty_term_has(term, TTYC_TSL) &&
519
	    !tty_term_has(term, TTYC_FSL)) {
520
		code = &term->codes[TTYC_TSL];
521
		code->value.string = xstrdup("\033]0;");
522
		code->type = TTYCODE_STRING;
523
		code = &term->codes[TTYC_FSL];
524
		code->value.string = xstrdup("\007");
525
		code->type = TTYCODE_STRING;
526
	}
527
528
	/* On terminals with RGB colour (TC), fill in setrgbf and setrgbb. */
529
	if (tty_term_flag(term, TTYC_TC) &&
530
	    !tty_term_has(term, TTYC_SETRGBF) &&
531
	    !tty_term_has(term, TTYC_SETRGBB)) {
532
		code = &term->codes[TTYC_SETRGBF];
533
		code->value.string = xstrdup("\033[38;2;%p1%d;%p2%d;%p3%dm");
534
		code->type = TTYCODE_STRING;
535
		code = &term->codes[TTYC_SETRGBB];
536
		code->value.string = xstrdup("\033[48;2;%p1%d;%p2%d;%p3%dm");
537
		code->type = TTYCODE_STRING;
538
	}
539
540
	/* Log it. */
541
	for (i = 0; i < tty_term_ncodes(); i++)
542
		log_debug("%s%s", name, tty_term_describe(term, i));
543
544
	return (term);
545
546
error:
547
	tty_term_free(term);
548
	return (NULL);
549
}
550
551
void
552
tty_term_free(struct tty_term *term)
553
{
554
	u_int	i;
555
556
	if (--term->references != 0)
557
		return;
558
559
	LIST_REMOVE(term, entry);
560
561
	for (i = 0; i < tty_term_ncodes(); i++) {
562
		if (term->codes[i].type == TTYCODE_STRING)
563
			free(term->codes[i].value.string);
564
	}
565
	free(term->codes);
566
567
	free(term->name);
568
	free(term);
569
}
570
571
int
572
tty_term_has(struct tty_term *term, enum tty_code_code code)
573
{
574
	return (term->codes[code].type != TTYCODE_NONE);
575
}
576
577
const char *
578
tty_term_string(struct tty_term *term, enum tty_code_code code)
579
{
580
	if (!tty_term_has(term, code))
581
		return ("");
582
	if (term->codes[code].type != TTYCODE_STRING)
583
		fatalx("not a string: %d", code);
584
	return (term->codes[code].value.string);
585
}
586
587
const char *
588
tty_term_string1(struct tty_term *term, enum tty_code_code code, int a)
589
{
590
	return (tparm((char *) tty_term_string(term, code), a));
591
}
592
593
const char *
594
tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
595
{
596
	return (tparm((char *) tty_term_string(term, code), a, b));
597
}
598
599
const char *
600
tty_term_string3(struct tty_term *term, enum tty_code_code code, int a, int b, int c)
601
{
602
	return (tparm((char *) tty_term_string(term, code), a, b, c));
603
}
604
605
const char *
606
tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a)
607
{
608
	return (tparm((char *) tty_term_string(term, code), a));
609
}
610
611
const char *
612
tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a,
613
    const void *b)
614
{
615
	return (tparm((char *) tty_term_string(term, code), a, b));
616
}
617
618
int
619
tty_term_number(struct tty_term *term, enum tty_code_code code)
620
{
621
	if (!tty_term_has(term, code))
622
		return (0);
623
	if (term->codes[code].type != TTYCODE_NUMBER)
624
		fatalx("not a number: %d", code);
625
	return (term->codes[code].value.number);
626
}
627
628
int
629
tty_term_flag(struct tty_term *term, enum tty_code_code code)
630
{
631
	if (!tty_term_has(term, code))
632
		return (0);
633
	if (term->codes[code].type != TTYCODE_FLAG)
634
		fatalx("not a flag: %d", code);
635
	return (term->codes[code].value.flag);
636
}
637
638
const char *
639
tty_term_describe(struct tty_term *term, enum tty_code_code code)
640
{
641
	static char	 s[256];
642
	char		 out[128];
643
644
	switch (term->codes[code].type) {
645
	case TTYCODE_NONE:
646
		xsnprintf(s, sizeof s, "%4u: %s: [missing]",
647
		    code, tty_term_codes[code].name);
648
		break;
649
	case TTYCODE_STRING:
650
		strnvis(out, term->codes[code].value.string, sizeof out,
651
		    VIS_OCTAL|VIS_TAB|VIS_NL);
652
		xsnprintf(s, sizeof s, "%4u: %s: (string) %s",
653
		    code, tty_term_codes[code].name,
654
		    out);
655
		break;
656
	case TTYCODE_NUMBER:
657
		xsnprintf(s, sizeof s, "%4u: %s: (number) %d",
658
		    code, tty_term_codes[code].name,
659
		    term->codes[code].value.number);
660
		break;
661
	case TTYCODE_FLAG:
662
		xsnprintf(s, sizeof s, "%4u: %s: (flag) %s",
663
		    code, tty_term_codes[code].name,
664
		    term->codes[code].value.flag ? "true" : "false");
665
		break;
666
	}
667
	return (s);
668
}