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tmux/tty-keys.c
nicm c02bc4dbe9 On second thoughts, do check DA2 for DECFRA and DECSLRM since that will 
catch terminals that say they are VT520 even if we can't use DA1
(because of VTE).
2023-09-08 07:05:06 +00:00

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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* 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/time.h>
#include <netinet/in.h>
#include <ctype.h>
#include <limits.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "tmux.h"
/*
* Handle keys input from the outside terminal. tty_default_*_keys[] are a base
* table of supported keys which are looked up in terminfo(5) and translated
* into a ternary tree.
*/
static void tty_keys_add1(struct tty_key **, const char *, key_code);
static void tty_keys_add(struct tty *, const char *, key_code);
static void tty_keys_free1(struct tty_key *);
static struct tty_key *tty_keys_find1(struct tty_key *, const char *, size_t,
size_t *);
static struct tty_key *tty_keys_find(struct tty *, const char *, size_t,
size_t *);
static int tty_keys_next1(struct tty *, const char *, size_t, key_code *,
size_t *, int);
static void tty_keys_callback(int, short, void *);
static int tty_keys_extended_key(struct tty *, const char *, size_t,
size_t *, key_code *);
static int tty_keys_mouse(struct tty *, const char *, size_t, size_t *,
struct mouse_event *);
static int tty_keys_clipboard(struct tty *, const char *, size_t,
size_t *);
static int tty_keys_device_attributes(struct tty *, const char *, size_t,
size_t *);
static int tty_keys_device_attributes2(struct tty *, const char *, size_t,
size_t *);
static int tty_keys_extended_device_attributes(struct tty *, const char *,
size_t, size_t *);
static int tty_keys_colours(struct tty *, const char *, size_t, size_t *);
/* A key tree entry. */
struct tty_key {
char ch;
key_code key;
struct tty_key *left;
struct tty_key *right;
struct tty_key *next;
};
/* Default raw keys. */
struct tty_default_key_raw {
const char *string;
key_code key;
};
static const struct tty_default_key_raw tty_default_raw_keys[] = {
/* Application escape. */
{ "\033O[", '\033' },
/*
* Numeric keypad. Just use the vt100 escape sequences here and always
* put the terminal into keypad_xmit mode. Translation of numbers
* mode/applications mode is done in input-keys.c.
*/
{ "\033Oo", KEYC_KP_SLASH|KEYC_KEYPAD },
{ "\033Oj", KEYC_KP_STAR|KEYC_KEYPAD },
{ "\033Om", KEYC_KP_MINUS|KEYC_KEYPAD },
{ "\033Ow", KEYC_KP_SEVEN|KEYC_KEYPAD },
{ "\033Ox", KEYC_KP_EIGHT|KEYC_KEYPAD },
{ "\033Oy", KEYC_KP_NINE|KEYC_KEYPAD },
{ "\033Ok", KEYC_KP_PLUS|KEYC_KEYPAD },
{ "\033Ot", KEYC_KP_FOUR|KEYC_KEYPAD },
{ "\033Ou", KEYC_KP_FIVE|KEYC_KEYPAD },
{ "\033Ov", KEYC_KP_SIX|KEYC_KEYPAD },
{ "\033Oq", KEYC_KP_ONE|KEYC_KEYPAD },
{ "\033Or", KEYC_KP_TWO|KEYC_KEYPAD },
{ "\033Os", KEYC_KP_THREE|KEYC_KEYPAD },
{ "\033OM", KEYC_KP_ENTER|KEYC_KEYPAD },
{ "\033Op", KEYC_KP_ZERO|KEYC_KEYPAD },
{ "\033On", KEYC_KP_PERIOD|KEYC_KEYPAD },
/* Arrow keys. */
{ "\033OA", KEYC_UP|KEYC_CURSOR },
{ "\033OB", KEYC_DOWN|KEYC_CURSOR },
{ "\033OC", KEYC_RIGHT|KEYC_CURSOR },
{ "\033OD", KEYC_LEFT|KEYC_CURSOR },
{ "\033[A", KEYC_UP|KEYC_CURSOR },
{ "\033[B", KEYC_DOWN|KEYC_CURSOR },
{ "\033[C", KEYC_RIGHT|KEYC_CURSOR },
{ "\033[D", KEYC_LEFT|KEYC_CURSOR },
/*
* Meta arrow keys. These do not get the IMPLIED_META flag so they
* don't match the xterm-style meta keys in the output tree - Escape+Up
* should stay as Escape+Up and not become M-Up.
*/
{ "\033\033OA", KEYC_UP|KEYC_CURSOR|KEYC_META },
{ "\033\033OB", KEYC_DOWN|KEYC_CURSOR|KEYC_META },
{ "\033\033OC", KEYC_RIGHT|KEYC_CURSOR|KEYC_META },
{ "\033\033OD", KEYC_LEFT|KEYC_CURSOR|KEYC_META },
{ "\033\033[A", KEYC_UP|KEYC_CURSOR|KEYC_META },
{ "\033\033[B", KEYC_DOWN|KEYC_CURSOR|KEYC_META },
{ "\033\033[C", KEYC_RIGHT|KEYC_CURSOR|KEYC_META },
{ "\033\033[D", KEYC_LEFT|KEYC_CURSOR|KEYC_META },
/* Other xterm keys. */
{ "\033OH", KEYC_HOME },
{ "\033OF", KEYC_END },
{ "\033\033OH", KEYC_HOME|KEYC_META|KEYC_IMPLIED_META },
{ "\033\033OF", KEYC_END|KEYC_META|KEYC_IMPLIED_META },
{ "\033[H", KEYC_HOME },
{ "\033[F", KEYC_END },
{ "\033\033[H", KEYC_HOME|KEYC_META|KEYC_IMPLIED_META },
{ "\033\033[F", KEYC_END|KEYC_META|KEYC_IMPLIED_META },
/* rxvt arrow keys. */
{ "\033Oa", KEYC_UP|KEYC_CTRL },
{ "\033Ob", KEYC_DOWN|KEYC_CTRL },
{ "\033Oc", KEYC_RIGHT|KEYC_CTRL },
{ "\033Od", KEYC_LEFT|KEYC_CTRL },
{ "\033[a", KEYC_UP|KEYC_SHIFT },
{ "\033[b", KEYC_DOWN|KEYC_SHIFT },
{ "\033[c", KEYC_RIGHT|KEYC_SHIFT },
{ "\033[d", KEYC_LEFT|KEYC_SHIFT },
/* rxvt function keys. */
{ "\033[11~", KEYC_F1 },
{ "\033[12~", KEYC_F2 },
{ "\033[13~", KEYC_F3 },
{ "\033[14~", KEYC_F4 },
{ "\033[15~", KEYC_F5 },
{ "\033[17~", KEYC_F6 },
{ "\033[18~", KEYC_F7 },
{ "\033[19~", KEYC_F8 },
{ "\033[20~", KEYC_F9 },
{ "\033[21~", KEYC_F10 },
{ "\033[23~", KEYC_F1|KEYC_SHIFT },
{ "\033[24~", KEYC_F2|KEYC_SHIFT },
{ "\033[25~", KEYC_F3|KEYC_SHIFT },
{ "\033[26~", KEYC_F4|KEYC_SHIFT },
{ "\033[28~", KEYC_F5|KEYC_SHIFT },
{ "\033[29~", KEYC_F6|KEYC_SHIFT },
{ "\033[31~", KEYC_F7|KEYC_SHIFT },
{ "\033[32~", KEYC_F8|KEYC_SHIFT },
{ "\033[33~", KEYC_F9|KEYC_SHIFT },
{ "\033[34~", KEYC_F10|KEYC_SHIFT },
{ "\033[23$", KEYC_F11|KEYC_SHIFT },
{ "\033[24$", KEYC_F12|KEYC_SHIFT },
{ "\033[11^", KEYC_F1|KEYC_CTRL },
{ "\033[12^", KEYC_F2|KEYC_CTRL },
{ "\033[13^", KEYC_F3|KEYC_CTRL },
{ "\033[14^", KEYC_F4|KEYC_CTRL },
{ "\033[15^", KEYC_F5|KEYC_CTRL },
{ "\033[17^", KEYC_F6|KEYC_CTRL },
{ "\033[18^", KEYC_F7|KEYC_CTRL },
{ "\033[19^", KEYC_F8|KEYC_CTRL },
{ "\033[20^", KEYC_F9|KEYC_CTRL },
{ "\033[21^", KEYC_F10|KEYC_CTRL },
{ "\033[23^", KEYC_F11|KEYC_CTRL },
{ "\033[24^", KEYC_F12|KEYC_CTRL },
{ "\033[11@", KEYC_F1|KEYC_CTRL|KEYC_SHIFT },
{ "\033[12@", KEYC_F2|KEYC_CTRL|KEYC_SHIFT },
{ "\033[13@", KEYC_F3|KEYC_CTRL|KEYC_SHIFT },
{ "\033[14@", KEYC_F4|KEYC_CTRL|KEYC_SHIFT },
{ "\033[15@", KEYC_F5|KEYC_CTRL|KEYC_SHIFT },
{ "\033[17@", KEYC_F6|KEYC_CTRL|KEYC_SHIFT },
{ "\033[18@", KEYC_F7|KEYC_CTRL|KEYC_SHIFT },
{ "\033[19@", KEYC_F8|KEYC_CTRL|KEYC_SHIFT },
{ "\033[20@", KEYC_F9|KEYC_CTRL|KEYC_SHIFT },
{ "\033[21@", KEYC_F10|KEYC_CTRL|KEYC_SHIFT },
{ "\033[23@", KEYC_F11|KEYC_CTRL|KEYC_SHIFT },
{ "\033[24@", KEYC_F12|KEYC_CTRL|KEYC_SHIFT },
/* Focus tracking. */
{ "\033[I", KEYC_FOCUS_IN },
{ "\033[O", KEYC_FOCUS_OUT },
/* Paste keys. */
{ "\033[200~", KEYC_PASTE_START },
{ "\033[201~", KEYC_PASTE_END },
/* Extended keys. */
{ "\033[1;5Z", '\011'|KEYC_CTRL|KEYC_SHIFT },
};
/* Default xterm keys. */
struct tty_default_key_xterm {
const char *template;
key_code key;
};
static const struct tty_default_key_xterm tty_default_xterm_keys[] = {
{ "\033[1;_P", KEYC_F1 },
{ "\033O1;_P", KEYC_F1 },
{ "\033O_P", KEYC_F1 },
{ "\033[1;_Q", KEYC_F2 },
{ "\033O1;_Q", KEYC_F2 },
{ "\033O_Q", KEYC_F2 },
{ "\033[1;_R", KEYC_F3 },
{ "\033O1;_R", KEYC_F3 },
{ "\033O_R", KEYC_F3 },
{ "\033[1;_S", KEYC_F4 },
{ "\033O1;_S", KEYC_F4 },
{ "\033O_S", KEYC_F4 },
{ "\033[15;_~", KEYC_F5 },
{ "\033[17;_~", KEYC_F6 },
{ "\033[18;_~", KEYC_F7 },
{ "\033[19;_~", KEYC_F8 },
{ "\033[20;_~", KEYC_F9 },
{ "\033[21;_~", KEYC_F10 },
{ "\033[23;_~", KEYC_F11 },
{ "\033[24;_~", KEYC_F12 },
{ "\033[1;_A", KEYC_UP },
{ "\033[1;_B", KEYC_DOWN },
{ "\033[1;_C", KEYC_RIGHT },
{ "\033[1;_D", KEYC_LEFT },
{ "\033[1;_H", KEYC_HOME },
{ "\033[1;_F", KEYC_END },
{ "\033[5;_~", KEYC_PPAGE },
{ "\033[6;_~", KEYC_NPAGE },
{ "\033[2;_~", KEYC_IC },
{ "\033[3;_~", KEYC_DC },
};
static const key_code tty_default_xterm_modifiers[] = {
0,
0,
KEYC_SHIFT,
KEYC_META|KEYC_IMPLIED_META,
KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META,
KEYC_CTRL,
KEYC_SHIFT|KEYC_CTRL,
KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL,
KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL,
KEYC_META|KEYC_IMPLIED_META
};
/*
* Default terminfo(5) keys. Any keys that have builtin modifiers (that is,
* where the key itself contains the modifiers) has the KEYC_XTERM flag set so
* a leading escape is not treated as meta (and probably removed).
*/
struct tty_default_key_code {
enum tty_code_code code;
key_code key;
};
static const struct tty_default_key_code tty_default_code_keys[] = {
/* Function keys. */
{ TTYC_KF1, KEYC_F1 },
{ TTYC_KF2, KEYC_F2 },
{ TTYC_KF3, KEYC_F3 },
{ TTYC_KF4, KEYC_F4 },
{ TTYC_KF5, KEYC_F5 },
{ TTYC_KF6, KEYC_F6 },
{ TTYC_KF7, KEYC_F7 },
{ TTYC_KF8, KEYC_F8 },
{ TTYC_KF9, KEYC_F9 },
{ TTYC_KF10, KEYC_F10 },
{ TTYC_KF11, KEYC_F11 },
{ TTYC_KF12, KEYC_F12 },
{ TTYC_KF13, KEYC_F1|KEYC_SHIFT },
{ TTYC_KF14, KEYC_F2|KEYC_SHIFT },
{ TTYC_KF15, KEYC_F3|KEYC_SHIFT },
{ TTYC_KF16, KEYC_F4|KEYC_SHIFT },
{ TTYC_KF17, KEYC_F5|KEYC_SHIFT },
{ TTYC_KF18, KEYC_F6|KEYC_SHIFT },
{ TTYC_KF19, KEYC_F7|KEYC_SHIFT },
{ TTYC_KF20, KEYC_F8|KEYC_SHIFT },
{ TTYC_KF21, KEYC_F9|KEYC_SHIFT },
{ TTYC_KF22, KEYC_F10|KEYC_SHIFT },
{ TTYC_KF23, KEYC_F11|KEYC_SHIFT },
{ TTYC_KF24, KEYC_F12|KEYC_SHIFT },
{ TTYC_KF25, KEYC_F1|KEYC_CTRL },
{ TTYC_KF26, KEYC_F2|KEYC_CTRL },
{ TTYC_KF27, KEYC_F3|KEYC_CTRL },
{ TTYC_KF28, KEYC_F4|KEYC_CTRL },
{ TTYC_KF29, KEYC_F5|KEYC_CTRL },
{ TTYC_KF30, KEYC_F6|KEYC_CTRL },
{ TTYC_KF31, KEYC_F7|KEYC_CTRL },
{ TTYC_KF32, KEYC_F8|KEYC_CTRL },
{ TTYC_KF33, KEYC_F9|KEYC_CTRL },
{ TTYC_KF34, KEYC_F10|KEYC_CTRL },
{ TTYC_KF35, KEYC_F11|KEYC_CTRL },
{ TTYC_KF36, KEYC_F12|KEYC_CTRL },
{ TTYC_KF37, KEYC_F1|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF38, KEYC_F2|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF39, KEYC_F3|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF40, KEYC_F4|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF41, KEYC_F5|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF42, KEYC_F6|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF43, KEYC_F7|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF44, KEYC_F8|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF45, KEYC_F9|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF46, KEYC_F10|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF47, KEYC_F11|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF48, KEYC_F12|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KF49, KEYC_F1|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF50, KEYC_F2|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF51, KEYC_F3|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF52, KEYC_F4|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF53, KEYC_F5|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF54, KEYC_F6|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF55, KEYC_F7|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF56, KEYC_F8|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF57, KEYC_F9|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF58, KEYC_F10|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF59, KEYC_F11|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF60, KEYC_F12|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KF61, KEYC_F1|KEYC_META|KEYC_IMPLIED_META|KEYC_SHIFT },
{ TTYC_KF62, KEYC_F2|KEYC_META|KEYC_IMPLIED_META|KEYC_SHIFT },
{ TTYC_KF63, KEYC_F3|KEYC_META|KEYC_IMPLIED_META|KEYC_SHIFT },
{ TTYC_KICH1, KEYC_IC },
{ TTYC_KDCH1, KEYC_DC },
{ TTYC_KHOME, KEYC_HOME },
{ TTYC_KEND, KEYC_END },
{ TTYC_KNP, KEYC_NPAGE },
{ TTYC_KPP, KEYC_PPAGE },
{ TTYC_KCBT, KEYC_BTAB },
/* Arrow keys from terminfo. */
{ TTYC_KCUU1, KEYC_UP|KEYC_CURSOR },
{ TTYC_KCUD1, KEYC_DOWN|KEYC_CURSOR },
{ TTYC_KCUB1, KEYC_LEFT|KEYC_CURSOR },
{ TTYC_KCUF1, KEYC_RIGHT|KEYC_CURSOR },
/* Key and modifier capabilities. */
{ TTYC_KDC2, KEYC_DC|KEYC_SHIFT },
{ TTYC_KDC3, KEYC_DC|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KDC4, KEYC_DC|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KDC5, KEYC_DC|KEYC_CTRL },
{ TTYC_KDC6, KEYC_DC|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KDC7, KEYC_DC|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KIND, KEYC_DOWN|KEYC_SHIFT },
{ TTYC_KDN2, KEYC_DOWN|KEYC_SHIFT },
{ TTYC_KDN3, KEYC_DOWN|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KDN4, KEYC_DOWN|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KDN5, KEYC_DOWN|KEYC_CTRL },
{ TTYC_KDN6, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KDN7, KEYC_DOWN|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KEND2, KEYC_END|KEYC_SHIFT },
{ TTYC_KEND3, KEYC_END|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KEND4, KEYC_END|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KEND5, KEYC_END|KEYC_CTRL },
{ TTYC_KEND6, KEYC_END|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KEND7, KEYC_END|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KHOM2, KEYC_HOME|KEYC_SHIFT },
{ TTYC_KHOM3, KEYC_HOME|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KHOM4, KEYC_HOME|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KHOM5, KEYC_HOME|KEYC_CTRL },
{ TTYC_KHOM6, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KHOM7, KEYC_HOME|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KIC2, KEYC_IC|KEYC_SHIFT },
{ TTYC_KIC3, KEYC_IC|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KIC4, KEYC_IC|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KIC5, KEYC_IC|KEYC_CTRL },
{ TTYC_KIC6, KEYC_IC|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KIC7, KEYC_IC|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KLFT2, KEYC_LEFT|KEYC_SHIFT },
{ TTYC_KLFT3, KEYC_LEFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KLFT4, KEYC_LEFT|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KLFT5, KEYC_LEFT|KEYC_CTRL },
{ TTYC_KLFT6, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KLFT7, KEYC_LEFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KNXT2, KEYC_NPAGE|KEYC_SHIFT },
{ TTYC_KNXT3, KEYC_NPAGE|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KNXT4, KEYC_NPAGE|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KNXT5, KEYC_NPAGE|KEYC_CTRL },
{ TTYC_KNXT6, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KNXT7, KEYC_NPAGE|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KPRV2, KEYC_PPAGE|KEYC_SHIFT },
{ TTYC_KPRV3, KEYC_PPAGE|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KPRV4, KEYC_PPAGE|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KPRV5, KEYC_PPAGE|KEYC_CTRL },
{ TTYC_KPRV6, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KPRV7, KEYC_PPAGE|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KRIT2, KEYC_RIGHT|KEYC_SHIFT },
{ TTYC_KRIT3, KEYC_RIGHT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KRIT4, KEYC_RIGHT|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KRIT5, KEYC_RIGHT|KEYC_CTRL },
{ TTYC_KRIT6, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KRIT7, KEYC_RIGHT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
{ TTYC_KRI, KEYC_UP|KEYC_SHIFT },
{ TTYC_KUP2, KEYC_UP|KEYC_SHIFT },
{ TTYC_KUP3, KEYC_UP|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KUP4, KEYC_UP|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META },
{ TTYC_KUP5, KEYC_UP|KEYC_CTRL },
{ TTYC_KUP6, KEYC_UP|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KUP7, KEYC_UP|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL },
};
/* Add key to tree. */
static void
tty_keys_add(struct tty *tty, const char *s, key_code key)
{
struct tty_key *tk;
size_t size;
const char *keystr;
keystr = key_string_lookup_key(key, 1);
if ((tk = tty_keys_find(tty, s, strlen(s), &size)) == NULL) {
log_debug("new key %s: 0x%llx (%s)", s, key, keystr);
tty_keys_add1(&tty->key_tree, s, key);
} else {
log_debug("replacing key %s: 0x%llx (%s)", s, key, keystr);
tk->key = key;
}
}
/* Add next node to the tree. */
static void
tty_keys_add1(struct tty_key **tkp, const char *s, key_code key)
{
struct tty_key *tk;
/* Allocate a tree entry if there isn't one already. */
tk = *tkp;
if (tk == NULL) {
tk = *tkp = xcalloc(1, sizeof *tk);
tk->ch = *s;
tk->key = KEYC_UNKNOWN;
}
/* Find the next entry. */
if (*s == tk->ch) {
/* Move forward in string. */
s++;
/* If this is the end of the string, no more is necessary. */
if (*s == '\0') {
tk->key = key;
return;
}
/* Use the child tree for the next character. */
tkp = &tk->next;
} else {
if (*s < tk->ch)
tkp = &tk->left;
else if (*s > tk->ch)
tkp = &tk->right;
}
/* And recurse to add it. */
tty_keys_add1(tkp, s, key);
}
/* Initialise a key tree from the table. */
void
tty_keys_build(struct tty *tty)
{
const struct tty_default_key_raw *tdkr;
const struct tty_default_key_xterm *tdkx;
const struct tty_default_key_code *tdkc;
u_int i, j;
const char *s;
struct options_entry *o;
struct options_array_item *a;
union options_value *ov;
char copy[16];
key_code key;
if (tty->key_tree != NULL)
tty_keys_free(tty);
tty->key_tree = NULL;
for (i = 0; i < nitems(tty_default_xterm_keys); i++) {
tdkx = &tty_default_xterm_keys[i];
for (j = 2; j < nitems(tty_default_xterm_modifiers); j++) {
strlcpy(copy, tdkx->template, sizeof copy);
copy[strcspn(copy, "_")] = '0' + j;
key = tdkx->key|tty_default_xterm_modifiers[j];
tty_keys_add(tty, copy, key);
}
}
for (i = 0; i < nitems(tty_default_raw_keys); i++) {
tdkr = &tty_default_raw_keys[i];
s = tdkr->string;
if (*s != '\0')
tty_keys_add(tty, s, tdkr->key);
}
for (i = 0; i < nitems(tty_default_code_keys); i++) {
tdkc = &tty_default_code_keys[i];
s = tty_term_string(tty->term, tdkc->code);
if (*s != '\0')
tty_keys_add(tty, s, tdkc->key);
}
o = options_get(global_options, "user-keys");
if (o != NULL) {
a = options_array_first(o);
while (a != NULL) {
i = options_array_item_index(a);
ov = options_array_item_value(a);
tty_keys_add(tty, ov->string, KEYC_USER + i);
a = options_array_next(a);
}
}
}
/* Free the entire key tree. */
void
tty_keys_free(struct tty *tty)
{
tty_keys_free1(tty->key_tree);
}
/* Free a single key. */
static void
tty_keys_free1(struct tty_key *tk)
{
if (tk->next != NULL)
tty_keys_free1(tk->next);
if (tk->left != NULL)
tty_keys_free1(tk->left);
if (tk->right != NULL)
tty_keys_free1(tk->right);
free(tk);
}
/* Lookup a key in the tree. */
static struct tty_key *
tty_keys_find(struct tty *tty, const char *buf, size_t len, size_t *size)
{
*size = 0;
return (tty_keys_find1(tty->key_tree, buf, len, size));
}
/* Find the next node. */
static struct tty_key *
tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size)
{
/* If no data, no match. */
if (len == 0)
return (NULL);
/* If the node is NULL, this is the end of the tree. No match. */
if (tk == NULL)
return (NULL);
/* Pick the next in the sequence. */
if (tk->ch == *buf) {
/* Move forward in the string. */
buf++; len--;
(*size)++;
/* At the end of the string, return the current node. */
if (len == 0 || (tk->next == NULL && tk->key != KEYC_UNKNOWN))
return (tk);
/* Move into the next tree for the following character. */
tk = tk->next;
} else {
if (*buf < tk->ch)
tk = tk->left;
else if (*buf > tk->ch)
tk = tk->right;
}
/* Move to the next in the tree. */
return (tty_keys_find1(tk, buf, len, size));
}
/* Look up part of the next key. */
static int
tty_keys_next1(struct tty *tty, const char *buf, size_t len, key_code *key,
size_t *size, int expired)
{
struct client *c = tty->client;
struct tty_key *tk, *tk1;
struct utf8_data ud;
enum utf8_state more;
utf8_char uc;
u_int i;
log_debug("%s: next key is %zu (%.*s) (expired=%d)", c->name, len,
(int)len, buf, expired);
/* Is this a known key? */
tk = tty_keys_find(tty, buf, len, size);
if (tk != NULL && tk->key != KEYC_UNKNOWN) {
tk1 = tk;
do
log_debug("%s: keys in list: %#llx", c->name, tk1->key);
while ((tk1 = tk1->next) != NULL);
if (tk->next != NULL && !expired)
return (1);
*key = tk->key;
return (0);
}
/* Is this valid UTF-8? */
more = utf8_open(&ud, (u_char)*buf);
if (more == UTF8_MORE) {
*size = ud.size;
if (len < ud.size) {
if (!expired)
return (1);
return (-1);
}
for (i = 1; i < ud.size; i++)
more = utf8_append(&ud, (u_char)buf[i]);
if (more != UTF8_DONE)
return (-1);
if (utf8_from_data(&ud, &uc) != UTF8_DONE)
return (-1);
*key = uc;
log_debug("%s: UTF-8 key %.*s %#llx", c->name, (int)ud.size,
ud.data, *key);
return (0);
}
return (-1);
}
/* Process at least one key in the buffer. Return 0 if no keys present. */
int
tty_keys_next(struct tty *tty)
{
struct client *c = tty->client;
struct timeval tv;
const char *buf;
size_t len, size;
cc_t bspace;
int delay, expired = 0, n;
key_code key;
struct mouse_event m = { 0 };
struct key_event *event;
/* Get key buffer. */
buf = EVBUFFER_DATA(tty->in);
len = EVBUFFER_LENGTH(tty->in);
if (len == 0)
return (0);
log_debug("%s: keys are %zu (%.*s)", c->name, len, (int)len, buf);
/* Is this a clipboard response? */
switch (tty_keys_clipboard(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a primary device attributes response? */
switch (tty_keys_device_attributes(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a secondary device attributes response? */
switch (tty_keys_device_attributes2(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this an extended device attributes response? */
switch (tty_keys_extended_device_attributes(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a colours response? */
switch (tty_keys_colours(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_UNKNOWN;
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
/* Is this a mouse key press? */
switch (tty_keys_mouse(tty, buf, len, &size, &m)) {
case 0: /* yes */
key = KEYC_MOUSE;
goto complete_key;
case -1: /* no, or not valid */
break;
case -2: /* yes, but we don't care. */
key = KEYC_MOUSE;
goto discard_key;
case 1: /* partial */
goto partial_key;
}
/* Is this an extended key press? */
switch (tty_keys_extended_key(tty, buf, len, &size, &key)) {
case 0: /* yes */
goto complete_key;
case -1: /* no, or not valid */
break;
case 1: /* partial */
goto partial_key;
}
first_key:
/* Try to lookup complete key. */
n = tty_keys_next1(tty, buf, len, &key, &size, expired);
if (n == 0) /* found */
goto complete_key;
if (n == 1)
goto partial_key;
/*
* If not a complete key, look for key with an escape prefix (meta
* modifier).
*/
if (*buf == '\033' && len > 1) {
/* Look for a key without the escape. */
n = tty_keys_next1(tty, buf + 1, len - 1, &key, &size, expired);
if (n == 0) { /* found */
if (key & KEYC_IMPLIED_META) {
/*
* We want the escape key as well as the xterm
* key, because the xterm sequence implicitly
* includes the escape (so if we see
* \033\033[1;3D we know it is an Escape
* followed by M-Left, not just M-Left).
*/
key = '\033';
size = 1;
goto complete_key;
}
key |= KEYC_META;
size++;
goto complete_key;
}
if (n == 1) /* partial */
goto partial_key;
}
/*
* At this point, we know the key is not partial (with or without
* escape). So pass it through even if the timer has not expired.
*/
if (*buf == '\033' && len >= 2) {
key = (u_char)buf[1] | KEYC_META;
size = 2;
} else {
key = (u_char)buf[0];
size = 1;
}
goto complete_key;
partial_key:
log_debug("%s: partial key %.*s", c->name, (int)len, buf);
/* If timer is going, check for expiration. */
if (tty->flags & TTY_TIMER) {
if (evtimer_initialized(&tty->key_timer) &&
!evtimer_pending(&tty->key_timer, NULL)) {
expired = 1;
goto first_key;
}
return (0);
}
/* Get the time period. */
delay = options_get_number(global_options, "escape-time");
if (delay == 0)
delay = 1;
tv.tv_sec = delay / 1000;
tv.tv_usec = (delay % 1000) * 1000L;
/* Start the timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
evtimer_set(&tty->key_timer, tty_keys_callback, tty);
evtimer_add(&tty->key_timer, &tv);
tty->flags |= TTY_TIMER;
return (0);
complete_key:
log_debug("%s: complete key %.*s %#llx", c->name, (int)size, buf, key);
/*
* Check for backspace key using termios VERASE - the terminfo
* kbs entry is extremely unreliable, so cannot be safely
* used. termios should have a better idea.
*/
bspace = tty->tio.c_cc[VERASE];
if (bspace != _POSIX_VDISABLE && (key & KEYC_MASK_KEY) == bspace)
key = (key & KEYC_MASK_MODIFIERS)|KEYC_BSPACE;
/* Remove data from buffer. */
evbuffer_drain(tty->in, size);
/* Remove key timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
tty->flags &= ~TTY_TIMER;
/* Check for focus events. */
if (key == KEYC_FOCUS_OUT) {
c->flags &= ~CLIENT_FOCUSED;
window_update_focus(c->session->curw->window);
notify_client("client-focus-out", c);
} else if (key == KEYC_FOCUS_IN) {
c->flags |= CLIENT_FOCUSED;
notify_client("client-focus-in", c);
window_update_focus(c->session->curw->window);
}
/* Fire the key. */
if (key != KEYC_UNKNOWN) {
event = xmalloc(sizeof *event);
event->key = key;
memcpy(&event->m, &m, sizeof event->m);
if (!server_client_handle_key(c, event))
free(event);
}
return (1);
discard_key:
log_debug("%s: discard key %.*s %#llx", c->name, (int)size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->in, size);
return (1);
}
/* Key timer callback. */
static void
tty_keys_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
if (tty->flags & TTY_TIMER) {
while (tty_keys_next(tty))
;
}
}
/*
* Handle extended key input. This has two forms: \033[27;m;k~ and \033[k;mu,
* where k is key as a number and m is a modifier. Returns 0 for success, -1
* for failure, 1 for partial;
*/
static int
tty_keys_extended_key(struct tty *tty, const char *buf, size_t len,
size_t *size, key_code *key)
{
struct client *c = tty->client;
size_t end;
u_int number, modifiers;
char tmp[64];
cc_t bspace;
key_code nkey;
key_code onlykey;
*size = 0;
/* First two bytes are always \033[. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
/*
* Look for a terminator. Stop at either '~' or anything that isn't a
* number or ';'.
*/
for (end = 2; end < len && end != sizeof tmp; end++) {
if (buf[end] == '~')
break;
if (!isdigit((u_char)buf[end]) && buf[end] != ';')
break;
}
if (end == len)
return (1);
if (end == sizeof tmp || (buf[end] != '~' && buf[end] != 'u'))
return (-1);
/* Copy to the buffer. */
memcpy(tmp, buf + 2, end);
tmp[end] = '\0';
/* Try to parse either form of key. */
if (buf[end] == '~') {
if (sscanf(tmp, "27;%u;%u", &modifiers, &number) != 2)
return (-1);
} else {
if (sscanf(tmp ,"%u;%u", &number, &modifiers) != 2)
return (-1);
}
*size = end + 1;
/* Store the key. */
bspace = tty->tio.c_cc[VERASE];
if (bspace != _POSIX_VDISABLE && number == bspace)
nkey = KEYC_BSPACE;
else
nkey = number;
/* Update the modifiers. */
if (modifiers > 0) {
modifiers--;
if (modifiers & 1)
nkey |= KEYC_SHIFT;
if (modifiers & 2)
nkey |= (KEYC_META|KEYC_IMPLIED_META); /* Alt */
if (modifiers & 4)
nkey |= KEYC_CTRL;
if (modifiers & 8)
nkey |= (KEYC_META|KEYC_IMPLIED_META); /* Meta */
}
/*
* Don't allow both KEYC_CTRL and as an implied modifier. Also convert
* C-X into C-x and so on.
*/
if (nkey & KEYC_CTRL) {
onlykey = (nkey & KEYC_MASK_KEY);
if (onlykey < 32 &&
onlykey != 9 &&
onlykey != 13 &&
onlykey != 27)
/* nothing */;
else if (onlykey >= 97 && onlykey <= 122)
onlykey -= 96;
else if (onlykey >= 64 && onlykey <= 95)
onlykey -= 64;
else if (onlykey == 32)
onlykey = 0;
else if (onlykey == 63)
onlykey = 127;
else
onlykey |= KEYC_CTRL;
nkey = onlykey|((nkey & KEYC_MASK_MODIFIERS) & ~KEYC_CTRL);
}
if (log_get_level() != 0) {
log_debug("%s: extended key %.*s is %llx (%s)", c->name,
(int)*size, buf, nkey, key_string_lookup_key(nkey, 1));
}
*key = nkey;
return (0);
}
/*
* Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
* (probably a mouse sequence but need more data), -2 if an invalid mouse
* sequence.
*/
static int
tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size,
struct mouse_event *m)
{
struct client *c = tty->client;
u_int i, x, y, b, sgr_b;
u_char sgr_type, ch;
/*
* Standard mouse sequences are \033[M followed by three characters
* indicating button, X and Y, all based at 32 with 1,1 top-left.
*
* UTF-8 mouse sequences are similar but the three are expressed as
* UTF-8 characters.
*
* SGR extended mouse sequences are \033[< followed by three numbers in
* decimal and separated by semicolons indicating button, X and Y. A
* trailing 'M' is click or scroll and trailing 'm' release. All are
* based at 0 with 1,1 top-left.
*/
*size = 0;
x = y = b = sgr_b = 0;
sgr_type = ' ';
/* First two bytes are always \033[. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
/*
* Third byte is M in old standard (and UTF-8 extension which we do not
* support), < in SGR extension.
*/
if (buf[2] == 'M') {
/* Read the three inputs. */
*size = 3;
for (i = 0; i < 3; i++) {
if (len <= *size)
return (1);
ch = (u_char)buf[(*size)++];
if (i == 0)
b = ch;
else if (i == 1)
x = ch;
else
y = ch;
}
log_debug("%s: mouse input: %.*s", c->name, (int)*size, buf);
/* Check and return the mouse input. */
if (b < MOUSE_PARAM_BTN_OFF ||
x < MOUSE_PARAM_POS_OFF ||
y < MOUSE_PARAM_POS_OFF)
return (-2);
b -= MOUSE_PARAM_BTN_OFF;
x -= MOUSE_PARAM_POS_OFF;
y -= MOUSE_PARAM_POS_OFF;
} else if (buf[2] == '<') {
/* Read the three inputs. */
*size = 3;
while (1) {
if (len <= *size)
return (1);
ch = (u_char)buf[(*size)++];
if (ch == ';')
break;
if (ch < '0' || ch > '9')
return (-1);
sgr_b = 10 * sgr_b + (ch - '0');
}
while (1) {
if (len <= *size)
return (1);
ch = (u_char)buf[(*size)++];
if (ch == ';')
break;
if (ch < '0' || ch > '9')
return (-1);
x = 10 * x + (ch - '0');
}
while (1) {
if (len <= *size)
return (1);
ch = (u_char)buf[(*size)++];
if (ch == 'M' || ch == 'm')
break;
if (ch < '0' || ch > '9')
return (-1);
y = 10 * y + (ch - '0');
}
log_debug("%s: mouse input (SGR): %.*s", c->name, (int)*size,
buf);
/* Check and return the mouse input. */
if (x < 1 || y < 1)
return (-2);
x--;
y--;
b = sgr_b;
/* Type is M for press, m for release. */
sgr_type = ch;
if (sgr_type == 'm')
b = 3;
/*
* Some terminals (like PuTTY 0.63) mistakenly send
* button-release events for scroll-wheel button-press event.
* Discard it before it reaches any program running inside
* tmux.
*/
if (sgr_type == 'm' && MOUSE_WHEEL(sgr_b))
return (-2);
} else
return (-1);
/* Fill mouse event. */
m->lx = tty->mouse_last_x;
m->x = x;
m->ly = tty->mouse_last_y;
m->y = y;
m->lb = tty->mouse_last_b;
m->b = b;
m->sgr_type = sgr_type;
m->sgr_b = sgr_b;
/* Update last mouse state. */
tty->mouse_last_x = x;
tty->mouse_last_y = y;
tty->mouse_last_b = b;
return (0);
}
/*
* Handle OSC 52 clipboard input. Returns 0 for success, -1 for failure, 1 for
* partial.
*/
static int
tty_keys_clipboard(struct tty *tty, const char *buf, size_t len, size_t *size)
{
struct client *c = tty->client;
struct window_pane *wp;
size_t end, terminator = 0, needed;
char *copy, *out;
int outlen;
u_int i;
*size = 0;
/* First five bytes are always \033]52;. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != ']')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '5')
return (-1);
if (len == 3)
return (1);
if (buf[3] != '2')
return (-1);
if (len == 4)
return (1);
if (buf[4] != ';')
return (-1);
if (len == 5)
return (1);
/* Find the terminator if any. */
for (end = 5; end < len; end++) {
if (buf[end] == '\007') {
terminator = 1;
break;
}
if (end > 5 && buf[end - 1] == '\033' && buf[end] == '\\') {
terminator = 2;
break;
}
}
if (end == len)
return (1);
*size = end + terminator;
/* Skip the initial part. */
buf += 5;
end -= 5;
/* Adjust end so that it points to the start of the terminator. */
end -= terminator - 1;
/* Get the second argument. */
while (end != 0 && *buf != ';') {
buf++;
end--;
}
if (end == 0 || end == 1)
return (0);
buf++;
end--;
/* If we did not request this, ignore it. */
if (~tty->flags & TTY_OSC52QUERY)
return (0);
tty->flags &= ~TTY_OSC52QUERY;
evtimer_del(&tty->clipboard_timer);
/* It has to be a string so copy it. */
copy = xmalloc(end + 1);
memcpy(copy, buf, end);
copy[end] = '\0';
/* Convert from base64. */
needed = (end / 4) * 3;
out = xmalloc(needed);
if ((outlen = b64_pton(copy, out, len)) == -1) {
free(out);
free(copy);
return (0);
}
free(copy);
/* Create a new paste buffer and forward to panes. */
log_debug("%s: %.*s", __func__, outlen, out);
if (c->flags & CLIENT_CLIPBOARDBUFFER) {
paste_add(NULL, out, outlen);
c->flags &= ~CLIENT_CLIPBOARDBUFFER;
}
for (i = 0; i < c->clipboard_npanes; i++) {
wp = window_pane_find_by_id(c->clipboard_panes[i]);
if (wp != NULL)
input_reply_clipboard(wp->event, out, outlen, "\033\\");
}
free(c->clipboard_panes);
c->clipboard_panes = NULL;
c->clipboard_npanes = 0;
return (0);
}
/*
* Handle primary device attributes input. Returns 0 for success, -1 for
* failure, 1 for partial.
*/
static int
tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len,
size_t *size)
{
struct client *c = tty->client;
int *features = &c->term_features;
u_int i, n = 0;
char tmp[128], *endptr, p[32] = { 0 }, *cp, *next;
*size = 0;
if (tty->flags & TTY_HAVEDA)
return (-1);
/* First three bytes are always \033[?. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '?')
return (-1);
if (len == 3)
return (1);
/* Copy the rest up to a c. */
for (i = 0; i < (sizeof tmp); i++) {
if (3 + i == len)
return (1);
if (buf[3 + i] == 'c')
break;
tmp[i] = buf[3 + i];
}
if (i == (sizeof tmp))
return (-1);
tmp[i] = '\0';
*size = 4 + i;
/* Convert all arguments to numbers. */
cp = tmp;
while ((next = strsep(&cp, ";")) != NULL) {
p[n] = strtoul(next, &endptr, 10);
if (*endptr != '\0')
p[n] = 0;
if (++n == nitems(p))
break;
}
/*
* Add terminal features. Hardware level 5 does not offer SIXEL but
* some terminal emulators report it anyway and it does not harm
* to check it here.
*
* DECSLRM and DECFRA should be supported by level 5 as well as level
* 4, but VTE has rather ruined it by advertising level 5 despite not
* supporting them.
*/
switch (p[0]) {
case 64: /* level 4 */
tty_add_features(features, "margins,rectfill", ",");
/* FALLTHROUGH */
case 62: /* level 2 */
case 63: /* level 3 */
case 65: /* level 5 */
for (i = 1; i < n; i++) {
log_debug("%s: DA feature: %d", c->name, p[i]);
if (p[i] == 4)
tty_add_features(features, "sixel", ",");
}
break;
}
log_debug("%s: received primary DA %.*s", c->name, (int)*size, buf);
tty_update_features(tty);
tty->flags |= TTY_HAVEDA;
return (0);
}
/*
* Handle secondary device attributes input. Returns 0 for success, -1 for
* failure, 1 for partial.
*/
static int
tty_keys_device_attributes2(struct tty *tty, const char *buf, size_t len,
size_t *size)
{
struct client *c = tty->client;
int *features = &c->term_features;
u_int i, n = 0;
char tmp[128], *endptr, p[32] = { 0 }, *cp, *next;
*size = 0;
if (tty->flags & TTY_HAVEDA2)
return (-1);
/* First three bytes are always \033[>. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '>')
return (-1);
if (len == 3)
return (1);
/* Copy the rest up to a c. */
for (i = 0; i < (sizeof tmp); i++) {
if (3 + i == len)
return (1);
if (buf[3 + i] == 'c')
break;
tmp[i] = buf[3 + i];
}
if (i == (sizeof tmp))
return (-1);
tmp[i] = '\0';
*size = 4 + i;
/* Convert all arguments to numbers. */
cp = tmp;
while ((next = strsep(&cp, ";")) != NULL) {
p[n] = strtoul(next, &endptr, 10);
if (*endptr != '\0')
p[n] = 0;
if (++n == nitems(p))
break;
}
/*
* Add terminal features. We add DECSLRM and DECFRA for some
* identification codes here, notably 64 will catch VT520, even though
* we can't use level 5 from DA because of VTE.
*/
switch (p[0]) {
case 41: /* VT420 */
case 61: /* VT510 */
case 64: /* VT520 */
tty_add_features(features, "margins,rectfill", ",");
break;
case 'M': /* mintty */
tty_default_features(features, "mintty", 0);
break;
case 'T': /* tmux */
tty_default_features(features, "tmux", 0);
break;
case 'U': /* rxvt-unicode */
tty_default_features(features, "rxvt-unicode", 0);
break;
}
log_debug("%s: received secondary DA %.*s", c->name, (int)*size, buf);
tty_update_features(tty);
tty->flags |= TTY_HAVEDA2;
return (0);
}
/*
* Handle extended device attributes input. Returns 0 for success, -1 for
* failure, 1 for partial.
*/
static int
tty_keys_extended_device_attributes(struct tty *tty, const char *buf,
size_t len, size_t *size)
{
struct client *c = tty->client;
int *features = &c->term_features;
u_int i;
char tmp[128];
*size = 0;
if (tty->flags & TTY_HAVEXDA)
return (-1);
/* First four bytes are always \033P>|. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != 'P')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '>')
return (-1);
if (len == 3)
return (1);
if (buf[3] != '|')
return (-1);
if (len == 4)
return (1);
/* Copy the rest up to \033\. */
for (i = 0; i < (sizeof tmp) - 1; i++) {
if (4 + i == len)
return (1);
if (buf[4 + i - 1] == '\033' && buf[4 + i] == '\\')
break;
tmp[i] = buf[4 + i];
}
if (i == (sizeof tmp) - 1)
return (-1);
tmp[i - 1] = '\0';
*size = 5 + i;
/* Add terminal features. */
if (strncmp(tmp, "iTerm2 ", 7) == 0)
tty_default_features(features, "iTerm2", 0);
else if (strncmp(tmp, "tmux ", 5) == 0)
tty_default_features(features, "tmux", 0);
else if (strncmp(tmp, "XTerm(", 6) == 0)
tty_default_features(features, "XTerm", 0);
else if (strncmp(tmp, "mintty ", 7) == 0)
tty_default_features(features, "mintty", 0);
log_debug("%s: received extended DA %.*s", c->name, (int)*size, buf);
free(c->term_type);
c->term_type = xstrdup(tmp);
tty_update_features(tty);
tty->flags |= TTY_HAVEXDA;
return (0);
}
/*
* Handle foreground or background input. Returns 0 for success, -1 for
* failure, 1 for partial.
*/
static int
tty_keys_colours(struct tty *tty, const char *buf, size_t len, size_t *size)
{
struct client *c = tty->client;
u_int i;
char tmp[128];
int n;
*size = 0;
/* First four bytes are always \033]1 and 0 or 1 and ;. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != ']')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '1')
return (-1);
if (len == 3)
return (1);
if (buf[3] != '0' && buf[3] != '1')
return (-1);
if (len == 4)
return (1);
if (buf[4] != ';')
return (-1);
if (len == 5)
return (1);
/* Copy the rest up to \033\ or \007. */
for (i = 0; i < (sizeof tmp) - 1; i++) {
if (5 + i == len)
return (1);
if (buf[5 + i - 1] == '\033' && buf[5 + i] == '\\')
break;
if (buf[5 + i] == '\007')
break;
tmp[i] = buf[5 + i];
}
if (i == (sizeof tmp) - 1)
return (-1);
if (tmp[i - 1] == '\033')
tmp[i - 1] = '\0';
else
tmp[i] = '\0';
*size = 6 + i;
n = colour_parseX11(tmp);
if (n != -1 && buf[3] == '0') {
log_debug("%s: foreground is %s", c->name, colour_tostring(n));
tty->fg = n;
} else if (n != -1) {
log_debug("%s: background is %s", c->name, colour_tostring(n));
tty->bg = n;
}
return (0);
}
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