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tmux/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_extended_device_attributes(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|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) "cursor" 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-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 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
};
/*
* 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 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 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 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");
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)
tty->client->flags &= ~CLIENT_FOCUSED;
else if (key == KEYC_FOCUS_IN)
tty->client->flags |= CLIENT_FOCUSED;
/* 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. */
switch (modifiers) {
case 2:
nkey |= KEYC_SHIFT;
break;
case 3:
nkey |= (KEYC_META|KEYC_IMPLIED_META);
break;
case 4:
nkey |= (KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META);
break;
case 5:
nkey |= KEYC_CTRL;
break;
case 6:
nkey |= (KEYC_SHIFT|KEYC_CTRL);
break;
case 7:
nkey |= (KEYC_META|KEYC_CTRL);
break;
case 8:
nkey |= (KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL);
break;
default:
*key = KEYC_NONE;
break;
}
/*
* 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) {
if (onlykey != 9)
onlykey = (nkey & ~KEYC_CTRL);
else
onlykey = (9|KEYC_CTRL);
} 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;
onlykey |= ((nkey & KEYC_MASK_MODIFIERS) & ~KEYC_CTRL);
}
nkey = onlykey;
}
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).
*/
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 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;
/* 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[>. Some older Terminal.app
* versions respond as for DA (\033[?) so accept and ignore that.
*/
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '>' && buf[2] != '?')
return (-1);
if (len == 3)
return (1);
/* Copy the rest up to a 'c'. */
for (i = 0; i < (sizeof tmp) - 1; i++) {
if (3 + i == len)
return (1);
if (buf[3 + i] == 'c')
break;
tmp[i] = buf[3 + i];
}
if (i == (sizeof tmp) - 1)
return (-1);
tmp[i] = '\0';
*size = 4 + i;
/* Ignore DA response. */
if (buf[2] == '?')
return (0);
/* 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_default_features(&c->term_features, "mintty", 0);
break;
case 'T': /* tmux */
tty_default_features(&c->term_features, "tmux", 0);
break;
case 'U': /* rxvt-unicode */
tty_default_features(&c->term_features, "rxvt-unicode", 0);
break;
}
log_debug("%s: received secondary DA %.*s", c->name, (int)*size, buf);
tty_update_features(tty);
tty->flags |= TTY_HAVEDA;
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;
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 a '\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(&c->term_features, "iTerm2", 0);
else if (strncmp(tmp, "tmux ", 5) == 0)
tty_default_features(&c->term_features, "tmux", 0);
else if (strncmp(tmp, "XTerm(", 6) == 0)
tty_default_features(&c->term_features, "XTerm", 0);
else if (strncmp(tmp, "mintty ", 7) == 0)
tty_default_features(&c->term_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);
}
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