File: [local] / src / usr.bin / tmux / tty-keys.c (download)
Revision 1.126, Mon Apr 20 13:25:36 2020 UTC (4 years, 1 month ago) by nicm
Branch: MAIN
Changes since 1.125: +48 -16 lines
Tidy up the terminal detection and feature code and add named sets of
terminal features, each of which are defined in one place and map to a
builtin set of terminfo(5) capabilities. Features can be specified based
on TERM with a new terminal-features option or with the -T flag when
running tmux. tmux will also detect a few common terminals from the DA
and DSR responses.
This is intended to make it easier to configure tmux's use of
terminfo(5) even in the presence of outdated ncurses(3) or terminfo(5)
databases or for features which do not yet have a terminfo(5) entry.
Instead of having to grok terminfo(5) capability names and what they
should be set to in the terminal-overrides option, the user can
hopefully just give tmux a feature name and let it do the right thing.
The terminal-overrides option remains both for backwards compatibility
and to allow tweaks of individual capabilities.
tmux already did much of this already, this makes it tidier and simpler
to configure.
|
/* $OpenBSD: tty-keys.c,v 1.126 2020/04/20 13:25:36 nicm Exp $ */
/*
* 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 <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_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_status_report(struct tty *, const char *,
size_t, size_t *);
/* 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 },
{ "\033Oj", KEYC_KP_STAR },
{ "\033Om", KEYC_KP_MINUS },
{ "\033Ow", KEYC_KP_SEVEN },
{ "\033Ox", KEYC_KP_EIGHT },
{ "\033Oy", KEYC_KP_NINE },
{ "\033Ok", KEYC_KP_PLUS },
{ "\033Ot", KEYC_KP_FOUR },
{ "\033Ou", KEYC_KP_FIVE },
{ "\033Ov", KEYC_KP_SIX },
{ "\033Oq", KEYC_KP_ONE },
{ "\033Or", KEYC_KP_TWO },
{ "\033Os", KEYC_KP_THREE },
{ "\033OM", KEYC_KP_ENTER },
{ "\033Op", KEYC_KP_ZERO },
{ "\033On", KEYC_KP_PERIOD },
/* Arrow keys. */
{ "\033OA", KEYC_UP },
{ "\033OB", KEYC_DOWN },
{ "\033OC", KEYC_RIGHT },
{ "\033OD", KEYC_LEFT },
{ "\033[A", KEYC_UP },
{ "\033[B", KEYC_DOWN },
{ "\033[C", KEYC_RIGHT },
{ "\033[D", KEYC_LEFT },
/* Other (xterm) "cursor" keys. */
{ "\033OH", KEYC_HOME },
{ "\033OF", KEYC_END },
{ "\033[H", KEYC_HOME },
{ "\033[F", KEYC_END },
/* rxvt-style arrow + modifier 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-style function + modifier keys (C = ^, S = $, C-S = @). */
{ "\033[11^", KEYC_F1|KEYC_CTRL },
{ "\033[12^", KEYC_F2|KEYC_CTRL },
{ "\033[13^", KEYC_F3|KEYC_CTRL },
{ "\033[14^", KEYC_F4|KEYC_CTRL },
{ "\033[15^", KEYC_F5|KEYC_CTRL },
{ "\033[17^", KEYC_F6|KEYC_CTRL },
{ "\033[18^", KEYC_F7|KEYC_CTRL },
{ "\033[19^", KEYC_F8|KEYC_CTRL },
{ "\033[20^", KEYC_F9|KEYC_CTRL },
{ "\033[21^", KEYC_F10|KEYC_CTRL },
{ "\033[23^", KEYC_F11|KEYC_CTRL },
{ "\033[24^", KEYC_F12|KEYC_CTRL },
{ "\033[2^", KEYC_IC|KEYC_CTRL },
{ "\033[3^", KEYC_DC|KEYC_CTRL },
{ "\033[7^", KEYC_HOME|KEYC_CTRL },
{ "\033[8^", KEYC_END|KEYC_CTRL },
{ "\033[6^", KEYC_NPAGE|KEYC_CTRL },
{ "\033[5^", KEYC_PPAGE|KEYC_CTRL },
{ "\033[11$", KEYC_F1|KEYC_SHIFT },
{ "\033[12$", KEYC_F2|KEYC_SHIFT },
{ "\033[13$", KEYC_F3|KEYC_SHIFT },
{ "\033[14$", KEYC_F4|KEYC_SHIFT },
{ "\033[15$", KEYC_F5|KEYC_SHIFT },
{ "\033[17$", KEYC_F6|KEYC_SHIFT },
{ "\033[18$", KEYC_F7|KEYC_SHIFT },
{ "\033[19$", KEYC_F8|KEYC_SHIFT },
{ "\033[20$", KEYC_F9|KEYC_SHIFT },
{ "\033[21$", KEYC_F10|KEYC_SHIFT },
{ "\033[23$", KEYC_F11|KEYC_SHIFT },
{ "\033[24$", KEYC_F12|KEYC_SHIFT },
{ "\033[2$", KEYC_IC|KEYC_SHIFT },
{ "\033[3$", KEYC_DC|KEYC_SHIFT },
{ "\033[7$", KEYC_HOME|KEYC_SHIFT },
{ "\033[8$", KEYC_END|KEYC_SHIFT },
{ "\033[6$", KEYC_NPAGE|KEYC_SHIFT },
{ "\033[5$", KEYC_PPAGE|KEYC_SHIFT },
{ "\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 },
{ "\033[2@", KEYC_IC|KEYC_CTRL|KEYC_SHIFT },
{ "\033[3@", KEYC_DC|KEYC_CTRL|KEYC_SHIFT },
{ "\033[7@", KEYC_HOME|KEYC_CTRL|KEYC_SHIFT },
{ "\033[8@", KEYC_END|KEYC_CTRL|KEYC_SHIFT },
{ "\033[6@", KEYC_NPAGE|KEYC_CTRL|KEYC_SHIFT },
{ "\033[5@", KEYC_PPAGE|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 },
};
/*
* 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|KEYC_XTERM },
{ TTYC_KF14, KEYC_F2|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF15, KEYC_F3|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF16, KEYC_F4|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF17, KEYC_F5|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF18, KEYC_F6|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF19, KEYC_F7|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF20, KEYC_F8|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF21, KEYC_F9|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF22, KEYC_F10|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF23, KEYC_F11|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF24, KEYC_F12|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF25, KEYC_F1|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF26, KEYC_F2|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF27, KEYC_F3|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF28, KEYC_F4|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF29, KEYC_F5|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF30, KEYC_F6|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF31, KEYC_F7|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF32, KEYC_F8|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF33, KEYC_F9|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF34, KEYC_F10|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF35, KEYC_F11|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF36, KEYC_F12|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF37, KEYC_F1|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF38, KEYC_F2|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF39, KEYC_F3|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF40, KEYC_F4|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF41, KEYC_F5|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF42, KEYC_F6|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF43, KEYC_F7|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF44, KEYC_F8|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF45, KEYC_F9|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF46, KEYC_F10|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF47, KEYC_F11|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF48, KEYC_F12|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KF49, KEYC_F1|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF50, KEYC_F2|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF51, KEYC_F3|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF52, KEYC_F4|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF53, KEYC_F5|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF54, KEYC_F6|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF55, KEYC_F7|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF56, KEYC_F8|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF57, KEYC_F9|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF58, KEYC_F10|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF59, KEYC_F11|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF60, KEYC_F12|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KF61, KEYC_F1|KEYC_ESCAPE|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF62, KEYC_F2|KEYC_ESCAPE|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KF63, KEYC_F3|KEYC_ESCAPE|KEYC_SHIFT|KEYC_XTERM },
{ 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 },
{ TTYC_KCUD1, KEYC_DOWN },
{ TTYC_KCUB1, KEYC_LEFT },
{ TTYC_KCUF1, KEYC_RIGHT },
/* Key and modifier capabilities. */
{ TTYC_KDC2, KEYC_DC|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KDC3, KEYC_DC|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KDC4, KEYC_DC|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KDC5, KEYC_DC|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KDC6, KEYC_DC|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KDC7, KEYC_DC|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KIND, KEYC_DOWN|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KDN2, KEYC_DOWN|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KDN3, KEYC_DOWN|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KDN4, KEYC_DOWN|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KDN5, KEYC_DOWN|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KDN6, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KDN7, KEYC_DOWN|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KEND2, KEYC_END|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KEND3, KEYC_END|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KEND4, KEYC_END|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KEND5, KEYC_END|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KEND6, KEYC_END|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KEND7, KEYC_END|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KHOM2, KEYC_HOME|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KHOM3, KEYC_HOME|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KHOM4, KEYC_HOME|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KHOM5, KEYC_HOME|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KHOM6, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KHOM7, KEYC_HOME|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KIC2, KEYC_IC|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KIC3, KEYC_IC|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KIC4, KEYC_IC|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KIC5, KEYC_IC|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KIC6, KEYC_IC|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KIC7, KEYC_IC|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KLFT2, KEYC_LEFT|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KLFT3, KEYC_LEFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KLFT4, KEYC_LEFT|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KLFT5, KEYC_LEFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KLFT6, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KLFT7, KEYC_LEFT|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KNXT2, KEYC_NPAGE|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KNXT3, KEYC_NPAGE|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KNXT4, KEYC_NPAGE|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KNXT5, KEYC_NPAGE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KNXT6, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KNXT7, KEYC_NPAGE|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KPRV2, KEYC_PPAGE|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KPRV3, KEYC_PPAGE|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KPRV4, KEYC_PPAGE|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KPRV5, KEYC_PPAGE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KPRV6, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KPRV7, KEYC_PPAGE|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KRIT2, KEYC_RIGHT|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KRIT3, KEYC_RIGHT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KRIT4, KEYC_RIGHT|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KRIT5, KEYC_RIGHT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KRIT6, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KRIT7, KEYC_RIGHT|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KRI, KEYC_UP|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KUP2, KEYC_UP|KEYC_SHIFT|KEYC_XTERM },
{ TTYC_KUP3, KEYC_UP|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KUP4, KEYC_UP|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM },
{ TTYC_KUP5, KEYC_UP|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KUP6, KEYC_UP|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM },
{ TTYC_KUP7, KEYC_UP|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM },
};
/* 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);
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_code *tdkc;
u_int i;
const char *s;
struct options_entry *o;
struct options_array_item *a;
union options_value *ov;
if (tty->key_tree != NULL)
tty_keys_free(tty);
tty->key_tree = NULL;
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;
u_int i;
wchar_t wc;
int n;
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 an an xterm(1) key? */
n = xterm_keys_find(buf, len, size, key);
if (n == 0)
return (0);
if (n == 1 && !expired)
return (1);
/* 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_combine(&ud, &wc) != UTF8_DONE)
return (-1);
*key = wc;
log_debug("%s: UTF-8 key %.*s %#llx", c->name, (int)ud.size,
buf, *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;
gettimeofday(&tv, NULL);
/* 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 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 device status report response? */
switch (tty_keys_device_status_report(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;
}
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_XTERM) {
/*
* 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_ESCAPE;
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_ESCAPE;
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");
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_MOD) | 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) {
tty->client->flags &= ~CLIENT_FOCUSED;
return (1);
} else if (key == KEYC_FOCUS_IN) {
tty->client->flags |= CLIENT_FOCUSED;
return (1);
}
/* 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 mouse key input. Returns 0 for success, -1 for failure, 1 for partial
* (probably a mouse sequence but need more data).
*/
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 < 32)
return (-1);
b -= 32;
if (x >= 33)
x -= 33;
else
x = 256 - x;
if (y >= 33)
y -= 33;
else
y = 256 - y;
} 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 (-1);
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' && (sgr_b & 64))
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(__unused struct tty *tty, const char *buf, size_t len,
size_t *size)
{
size_t end, terminator, needed;
char *copy, *out;
int outlen;
*size = 0;
/* First three 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;
/* Get the second argument. */
while (end != 0 && *buf != ';') {
buf++;
end--;
}
if (end == 0 || end == 1)
return (0);
buf++;
end--;
/* 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. */
log_debug("%s: %.*s", __func__, outlen, out);
paste_add(NULL, out, outlen);
return (0);
}
/*
* Handle secondary 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;
u_int i, n = 0;
char tmp[64], *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) - 1 && buf[3 + i] != 'c'; i++) {
if (3 + i == len)
return (1);
tmp[i] = buf[3 + i];
}
if (i == (sizeof tmp) - 1)
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;
n++;
}
/* Add terminal features. */
switch (p[0]) {
case 41: /* VT420 */
tty_add_features(&c->term_features,
"margins,"
"rectfill",
",");
break;
case 'M': /* mintty */
tty_add_features(&c->term_features,
"256,"
"RGB,"
"title",
",");
break;
case 'T': /* tmux */
tty_add_features(&c->term_features,
"256,"
"RGB,"
"ccolour,"
"cstyle,"
"overline,"
"title,"
"usstyle",
",");
break;
case 'U': /* rxvt-unicode */
tty_add_features(&c->term_features,
"256,"
"title",
",");
break;
}
log_debug("%s: received secondary DA %.*s", c->name, (int)*size, buf);
tty_update_features(tty);
tty->flags |= TTY_HAVEDA;
return (0);
}
/*
* Handle device status report input. Returns 0 for success, -1 for failure, 1
* for partial.
*/
static int
tty_keys_device_status_report(struct tty *tty, const char *buf, size_t len,
size_t *size)
{
struct client *c = tty->client;
u_int i;
char tmp[64];
*size = 0;
if (tty->flags & TTY_HAVEDSR)
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] != 'I' && buf[2] != 'T')
return (-1);
if (len == 3)
return (1);
/* Copy the rest up to a 'n'. */
for (i = 0; i < (sizeof tmp) - 1 && buf[2 + i] != 'n'; i++) {
if (2 + i == len)
return (1);
tmp[i] = buf[2 + i];
}
if (i == (sizeof tmp) - 1)
return (-1);
tmp[i] = '\0';
*size = 3 + i;
/* Add terminal features. */
if (strncmp(tmp, "ITERM2 ", 7) == 0) {
tty_add_features(&c->term_features,
"256,"
"RGB,"
"clipboard,"
"cstyle,"
"margins,"
"sync,"
"title,",
",");
} else if (strncmp(tmp, "TMUX ", 5) == 0) {
tty_add_features(&c->term_features,
"256,"
"RGB,"
"ccolour,"
"cstyle,"
"overline,"
"title,"
"usstyle",
",");
}
log_debug("%s: received DSR %.*s", c->name, (int)*size, buf);
tty_update_features(tty);
tty->flags |= TTY_HAVEDSR;
return (0);
}
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