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tty-keys.c
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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 *);
/* 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 window size change escape sequences. */
static int
tty_keys_winsz(struct tty *tty, const char *buf, size_t len, size_t *size)
{
struct client *c = tty->client;
size_t end;
char tmp[64];
u_int sx, sy, xpixel, ypixel, char_x, char_y;
*size = 0;
/* If we did not request this, ignore it. */
if (!(tty->flags & TTY_WINSIZEQUERY))
return (-1);
/* 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);
/*
* Stop at either 't' or anything that isn't a
* number or ';'.
*/
for (end = 2; end < len && end != sizeof tmp; end++) {
if (buf[end] == 't')
break;
if (!isdigit((u_char)buf[end]) && buf[end] != ';')
break;
}
if (end == len)
return (1);
if (end == sizeof tmp || buf[end] != 't')
return (-1);
/* Copy to the buffer. */
memcpy(tmp, buf + 2, end - 2);
tmp[end - 2] = '\0';
/* Try to parse the window size sequence. */
if (sscanf(tmp, "8;%u;%u", &sy, &sx) == 2) {
/* Window size in characters. */
tty_set_size(tty, sx, sy, tty->xpixel, tty->ypixel);
*size = end + 1;
return (0);
} else if (sscanf(tmp, "4;%u;%u", &ypixel, &xpixel) == 2) {
/* Window size in pixels. */
char_x = (xpixel && tty->sx) ? xpixel / tty->sx : 0;
char_y = (ypixel && tty->sy) ? ypixel / tty->sy : 0;
tty_set_size(tty, tty->sx, tty->sy, char_x, char_y);
tty_invalidate(tty);
tty->flags &= ~TTY_WINSIZEQUERY;
*size = end + 1;
return (0);
}
log_debug("%s: unrecognized window size sequence: %s", c->name, tmp);
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, onlykey;
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, &tty->fg, &tty->bg)) {
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;
}
/* Check for window size query */
switch (tty_keys_winsz(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;
}
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;
}
/* C-Space is special. */
if ((key & KEYC_MASK_KEY) == C0_NUL)
key = ' ' | KEYC_CTRL | (key & KEYC_META);
/*
* 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 == bspace) {
log_debug("%s: key %#llx is backspace", c->name, key);
key = KEYC_BSPACE;
}
/*
* Fix up all C0 control codes that don't have a dedicated key into
* corresponding Ctrl keys. Convert characters in the A-Z range into
* lowercase, so ^A becomes a|CTRL.
*/
onlykey = key & KEYC_MASK_KEY;
if (onlykey < 0x20 &&
onlykey != C0_HT &&
onlykey != C0_CR &&
onlykey != C0_ESC) {
onlykey |= 0x40;
if (onlykey >= 'A' && onlykey <= 'Z')
onlykey |= 0x20;
key = onlykey | KEYC_CTRL | (key & KEYC_META);
}
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);
/* 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 = xcalloc(1, sizeof *event);
event->key = key;
memcpy(&event->m, &m, sizeof event->m);
event->buf = xmalloc(size);
event->len = size;
memcpy (event->buf, buf, event->len);
if (!server_client_handle_key(c, event)) {
free(event->buf);
free(event);
}
}
/* Remove data from buffer. */
evbuffer_drain(tty->in, size);
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;