mirror of
https://github.com/tmate-io/tmate.git
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436 lines
13 KiB
C
436 lines
13 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "tmux.h"
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/*
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* Handle keys input from the outside terminal.
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*/
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void tty_keys_add(struct tty *, const char *, int);
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void tty_keys_callback(int, short, void *);
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int tty_keys_mouse(char *, size_t, size_t *, struct mouse_event *);
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struct tty_key_ent {
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enum tty_code_code code;
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const char *string;
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int key;
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int flags;
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#define TTYKEY_CTRL 0x1
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#define TTYKEY_RAW 0x2
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};
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struct tty_key_ent tty_keys[] = {
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/* Function keys. */
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{ TTYC_KF1, NULL, KEYC_F1, TTYKEY_CTRL },
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{ TTYC_KF1, NULL, KEYC_F1, TTYKEY_CTRL },
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{ TTYC_KF2, NULL, KEYC_F2, TTYKEY_CTRL },
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{ TTYC_KF3, NULL, KEYC_F3, TTYKEY_CTRL },
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{ TTYC_KF4, NULL, KEYC_F4, TTYKEY_CTRL },
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{ TTYC_KF5, NULL, KEYC_F5, TTYKEY_CTRL },
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{ TTYC_KF6, NULL, KEYC_F6, TTYKEY_CTRL },
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{ TTYC_KF7, NULL, KEYC_F7, TTYKEY_CTRL },
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{ TTYC_KF8, NULL, KEYC_F8, TTYKEY_CTRL },
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{ TTYC_KF9, NULL, KEYC_F9, TTYKEY_CTRL },
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{ TTYC_KF10, NULL, KEYC_F10, TTYKEY_CTRL },
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{ TTYC_KF11, NULL, KEYC_F11, TTYKEY_CTRL },
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{ TTYC_KF12, NULL, KEYC_F12, TTYKEY_CTRL },
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{ TTYC_KF13, NULL, KEYC_F13, TTYKEY_CTRL },
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{ TTYC_KF14, NULL, KEYC_F14, TTYKEY_CTRL },
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{ TTYC_KF15, NULL, KEYC_F15, TTYKEY_CTRL },
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{ TTYC_KF16, NULL, KEYC_F16, TTYKEY_CTRL },
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{ TTYC_KF17, NULL, KEYC_F17, TTYKEY_CTRL },
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{ TTYC_KF18, NULL, KEYC_F18, TTYKEY_CTRL },
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{ TTYC_KF19, NULL, KEYC_F19, TTYKEY_CTRL },
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{ TTYC_KF20, NULL, KEYC_F20, TTYKEY_CTRL },
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{ TTYC_KICH1, NULL, KEYC_IC, TTYKEY_CTRL },
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{ TTYC_KDCH1, NULL, KEYC_DC, TTYKEY_CTRL },
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{ TTYC_KHOME, NULL, KEYC_HOME, TTYKEY_CTRL },
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{ TTYC_KEND, NULL, KEYC_END, TTYKEY_CTRL },
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{ TTYC_KNP, NULL, KEYC_NPAGE, TTYKEY_CTRL },
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{ TTYC_KPP, NULL, KEYC_PPAGE, TTYKEY_CTRL },
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{ TTYC_KCBT, NULL, KEYC_BTAB, TTYKEY_CTRL },
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/* Arrow keys. */
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{ 0, "\033OA", KEYC_UP, TTYKEY_RAW },
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{ 0, "\033OB", KEYC_DOWN, TTYKEY_RAW },
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{ 0, "\033OC", KEYC_RIGHT, TTYKEY_RAW },
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{ 0, "\033OD", KEYC_LEFT, TTYKEY_RAW },
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{ 0, "\033[A", KEYC_UP, TTYKEY_RAW },
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{ 0, "\033[B", KEYC_DOWN, TTYKEY_RAW },
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{ 0, "\033[C", KEYC_RIGHT, TTYKEY_RAW },
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{ 0, "\033[D", KEYC_LEFT, TTYKEY_RAW },
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{ TTYC_KCUU1, NULL, KEYC_UP, TTYKEY_CTRL },
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{ TTYC_KCUD1, NULL, KEYC_DOWN, TTYKEY_CTRL },
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{ TTYC_KCUB1, NULL, KEYC_LEFT, TTYKEY_CTRL },
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{ TTYC_KCUF1, NULL, KEYC_RIGHT, TTYKEY_CTRL },
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/* Special-case arrow keys for rxvt until terminfo has kRIT5 etc. */
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{ 0, "\033Oa", KEYC_UP|KEYC_CTRL, TTYKEY_RAW },
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{ 0, "\033Ob", KEYC_DOWN|KEYC_CTRL, TTYKEY_RAW },
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{ 0, "\033Oc", KEYC_RIGHT|KEYC_CTRL, TTYKEY_RAW },
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{ 0, "\033Od", KEYC_LEFT|KEYC_CTRL, TTYKEY_RAW },
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{ 0, "\033[a", KEYC_UP|KEYC_SHIFT, TTYKEY_RAW },
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{ 0, "\033[b", KEYC_DOWN|KEYC_SHIFT, TTYKEY_RAW },
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{ 0, "\033[c", KEYC_RIGHT|KEYC_SHIFT, TTYKEY_RAW },
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{ 0, "\033[d", KEYC_LEFT|KEYC_SHIFT, TTYKEY_RAW },
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/*
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* Numeric keypad. Just use the vt100 escape sequences here and always
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* put the terminal into keypad_xmit mode. Translation of numbers
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* mode/applications mode is done in input-keys.c.
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*/
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{ 0, "\033Oo", KEYC_KP_SLASH, TTYKEY_RAW },
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{ 0, "\033Oj", KEYC_KP_STAR, TTYKEY_RAW },
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{ 0, "\033Om", KEYC_KP_MINUS, TTYKEY_RAW },
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{ 0, "\033Ow", KEYC_KP_SEVEN, TTYKEY_RAW },
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{ 0, "\033Ox", KEYC_KP_EIGHT, TTYKEY_RAW },
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{ 0, "\033Oy", KEYC_KP_NINE, TTYKEY_RAW },
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{ 0, "\033Ok", KEYC_KP_PLUS, TTYKEY_RAW },
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{ 0, "\033Ot", KEYC_KP_FOUR, TTYKEY_RAW },
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{ 0, "\033Ou", KEYC_KP_FIVE, TTYKEY_RAW },
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{ 0, "\033Ov", KEYC_KP_SIX, TTYKEY_RAW },
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{ 0, "\033Oq", KEYC_KP_ONE, TTYKEY_RAW },
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{ 0, "\033Or", KEYC_KP_TWO, TTYKEY_RAW },
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{ 0, "\033Os", KEYC_KP_THREE, TTYKEY_RAW },
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{ 0, "\033OM", KEYC_KP_ENTER, TTYKEY_RAW },
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{ 0, "\033Op", KEYC_KP_ZERO, TTYKEY_RAW },
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{ 0, "\033On", KEYC_KP_PERIOD, TTYKEY_RAW },
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/* Key and modifier capabilities. */
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{ TTYC_KDC2, NULL, KEYC_DC|KEYC_SHIFT, 0 },
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{ TTYC_KDC3, NULL, KEYC_DC|KEYC_ESCAPE, 0 },
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{ TTYC_KDC4, NULL, KEYC_DC|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KDC5, NULL, KEYC_DC|KEYC_CTRL, 0 },
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{ TTYC_KDC6, NULL, KEYC_DC|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KDC7, NULL, KEYC_DC|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KDN2, NULL, KEYC_DOWN|KEYC_SHIFT, 0 },
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{ TTYC_KDN3, NULL, KEYC_DOWN|KEYC_ESCAPE, 0 },
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{ TTYC_KDN4, NULL, KEYC_DOWN|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KDN5, NULL, KEYC_DOWN|KEYC_CTRL, 0 },
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{ TTYC_KDN6, NULL, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KDN7, NULL, KEYC_DOWN|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KEND2, NULL, KEYC_END|KEYC_SHIFT, 0 },
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{ TTYC_KEND3, NULL, KEYC_END|KEYC_ESCAPE, 0 },
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{ TTYC_KEND4, NULL, KEYC_END|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KEND5, NULL, KEYC_END|KEYC_CTRL, 0 },
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{ TTYC_KEND6, NULL, KEYC_END|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KEND7, NULL, KEYC_END|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KHOM2, NULL, KEYC_HOME|KEYC_SHIFT, 0 },
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{ TTYC_KHOM3, NULL, KEYC_HOME|KEYC_ESCAPE, 0 },
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{ TTYC_KHOM4, NULL, KEYC_HOME|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KHOM5, NULL, KEYC_HOME|KEYC_CTRL, 0 },
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{ TTYC_KHOM6, NULL, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KHOM7, NULL, KEYC_HOME|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KIC2, NULL, KEYC_IC|KEYC_SHIFT, 0 },
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{ TTYC_KIC3, NULL, KEYC_IC|KEYC_ESCAPE, 0 },
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{ TTYC_KIC4, NULL, KEYC_IC|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KIC5, NULL, KEYC_IC|KEYC_CTRL, 0 },
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{ TTYC_KIC6, NULL, KEYC_IC|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KIC7, NULL, KEYC_IC|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KLFT2, NULL, KEYC_LEFT|KEYC_SHIFT, 0 },
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{ TTYC_KLFT3, NULL, KEYC_LEFT|KEYC_ESCAPE, 0 },
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{ TTYC_KLFT4, NULL, KEYC_LEFT|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KLFT5, NULL, KEYC_LEFT|KEYC_CTRL, 0 },
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{ TTYC_KLFT6, NULL, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KLFT7, NULL, KEYC_LEFT|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KNXT2, NULL, KEYC_NPAGE|KEYC_SHIFT, 0 },
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{ TTYC_KNXT3, NULL, KEYC_NPAGE|KEYC_ESCAPE, 0 },
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{ TTYC_KNXT4, NULL, KEYC_NPAGE|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KNXT5, NULL, KEYC_NPAGE|KEYC_CTRL, 0 },
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{ TTYC_KNXT6, NULL, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KNXT7, NULL, KEYC_NPAGE|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KPRV2, NULL, KEYC_PPAGE|KEYC_SHIFT, 0 },
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{ TTYC_KPRV3, NULL, KEYC_PPAGE|KEYC_ESCAPE, 0 },
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{ TTYC_KPRV4, NULL, KEYC_PPAGE|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KPRV5, NULL, KEYC_PPAGE|KEYC_CTRL, 0 },
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{ TTYC_KPRV6, NULL, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KPRV7, NULL, KEYC_PPAGE|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KRIT2, NULL, KEYC_RIGHT|KEYC_SHIFT, 0 },
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{ TTYC_KRIT3, NULL, KEYC_RIGHT|KEYC_ESCAPE, 0 },
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{ TTYC_KRIT4, NULL, KEYC_RIGHT|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KRIT5, NULL, KEYC_RIGHT|KEYC_CTRL, 0 },
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{ TTYC_KRIT6, NULL, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KRIT7, NULL, KEYC_RIGHT|KEYC_ESCAPE|KEYC_CTRL, 0 },
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{ TTYC_KUP2, NULL, KEYC_UP|KEYC_SHIFT, 0 },
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{ TTYC_KUP3, NULL, KEYC_UP|KEYC_ESCAPE, 0 },
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{ TTYC_KUP4, NULL, KEYC_UP|KEYC_SHIFT|KEYC_ESCAPE, 0 },
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{ TTYC_KUP5, NULL, KEYC_UP|KEYC_CTRL, 0 },
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{ TTYC_KUP6, NULL, KEYC_UP|KEYC_SHIFT|KEYC_CTRL, 0 },
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{ TTYC_KUP7, NULL, KEYC_UP|KEYC_ESCAPE|KEYC_CTRL, 0 },
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};
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RB_GENERATE(tty_keys, tty_key, entry, tty_keys_cmp);
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struct tty_key *tty_keys_find(struct tty *, char *, size_t, size_t *);
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int
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tty_keys_cmp(struct tty_key *k1, struct tty_key *k2)
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{
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return (strcmp(k1->string, k2->string));
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}
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void
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tty_keys_add(struct tty *tty, const char *s, int key)
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{
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struct tty_key *tk, *tl;
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tk = xmalloc(sizeof *tk);
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tk->string = xstrdup(s);
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tk->key = key;
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if ((tl = RB_INSERT(tty_keys, &tty->ktree, tk)) != NULL) {
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xfree(tk->string);
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xfree(tk);
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log_debug("key exists: %s (old %x, new %x)", s, tl->key, key);
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return;
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}
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if (strlen(tk->string) > tty->ksize)
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tty->ksize = strlen(tk->string);
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log_debug("new key %x: size now %zu (%s)", key, tty->ksize, tk->string);
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}
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void
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tty_keys_init(struct tty *tty)
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{
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struct tty_key_ent *tke;
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u_int i;
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const char *s;
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char tmp[64];
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RB_INIT(&tty->ktree);
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tty->ksize = 0;
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for (i = 0; i < nitems(tty_keys); i++) {
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tke = &tty_keys[i];
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if (tke->flags & TTYKEY_RAW)
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s = tke->string;
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else {
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if (!tty_term_has(tty->term, tke->code))
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continue;
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s = tty_term_string(tty->term, tke->code);
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if (s[0] != '\033' || s[1] == '\0')
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continue;
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}
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tty_keys_add(tty, s + 1, tke->key);
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if (tke->flags & TTYKEY_CTRL) {
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if (strlcpy(tmp, s, sizeof tmp) >= sizeof tmp)
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continue;
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tmp[strlen(tmp) - 1] ^= 0x20;
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tty_keys_add(tty, tmp + 1, tke->key | KEYC_CTRL);
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}
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}
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}
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void
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tty_keys_free(struct tty *tty)
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{
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struct tty_key *tk;
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while (!RB_EMPTY(&tty->ktree)) {
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tk = RB_ROOT(&tty->ktree);
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RB_REMOVE(tty_keys, &tty->ktree, tk);
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xfree(tk->string);
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xfree(tk);
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}
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}
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struct tty_key *
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tty_keys_find(struct tty *tty, char *buf, size_t len, size_t *size)
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{
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struct tty_key *tk, tl;
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char *s;
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if (len == 0)
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return (NULL);
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s = xmalloc(tty->ksize + 1);
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for (*size = tty->ksize; (*size) > 0; (*size)--) {
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if ((*size) > len)
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continue;
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memcpy(s, buf, *size);
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s[*size] = '\0';
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log_debug2("looking for key: %s", s);
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tl.string = s;
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tk = RB_FIND(tty_keys, &tty->ktree, &tl);
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if (tk != NULL) {
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log_debug2("got key: 0x%x", tk->key);
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xfree(s);
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return (tk);
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}
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}
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xfree(s);
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return (NULL);
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}
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int
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tty_keys_next(struct tty *tty)
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{
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struct tty_key *tk;
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struct timeval tv;
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struct mouse_event mouse;
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char *buf;
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size_t len, size;
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cc_t bspace;
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int key;
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u_char ch;
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buf = EVBUFFER_DATA(tty->event->input);
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len = EVBUFFER_LENGTH(tty->event->input);
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if (len == 0)
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return (0);
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log_debug("keys are %zu (%.*s)", len, (int) len, buf);
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/* If a normal key, return it. */
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if (*buf != '\033') {
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bufferevent_read(tty->event, &ch, 1);
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key = ch;
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/*
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* Check for backspace key using termios VERASE - the terminfo
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* kbs entry is extremely unreliable, so cannot be safely
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* used. termios should have a better idea.
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*/
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bspace = tty->tio.c_cc[VERASE];
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if (bspace != _POSIX_VDISABLE && key == bspace)
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key = KEYC_BSPACE;
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goto found;
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}
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/* Look for matching key string and return if found. */
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tk = tty_keys_find(tty, buf + 1, len - 1, &size);
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if (tk != NULL) {
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evbuffer_drain(tty->event->input, size + 1);
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key = tk->key;
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goto found;
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}
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/* Not found. Is this a mouse key press? */
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key = tty_keys_mouse(buf, len, &size, &mouse);
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if (key != KEYC_NONE) {
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evbuffer_drain(tty->event->input, size);
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goto found;
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}
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/* Not found. Try to parse a key with an xterm-style modifier. */
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key = xterm_keys_find(buf, len, &size);
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if (key != KEYC_NONE) {
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evbuffer_drain(tty->event->input, size);
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goto found;
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}
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/* Skip the escape. */
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buf++;
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len--;
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/* Is there a normal key following? */
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if (len != 0 && *buf != '\033') {
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evbuffer_drain(tty->event->input, 1);
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bufferevent_read(tty->event, &ch, 1);
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key = ch | KEYC_ESCAPE;
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goto found;
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}
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/* Or a key string? */
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if (len > 1) {
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tk = tty_keys_find(tty, buf + 1, len - 1, &size);
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if (tk != NULL) {
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evbuffer_drain(tty->event->input, size + 2);
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key = tk->key | KEYC_ESCAPE;
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goto found;
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}
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}
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/*
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* Escape but no key string. If have, already seen an escape, then the
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* timer must have expired, so give up waiting and send the escape.
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*/
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if (tty->flags & TTY_ESCAPE) {
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evbuffer_drain(tty->event->input, 1);
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key = '\033';
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goto found;
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}
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/* Start the timer and wait for expiry or more data. */
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tv.tv_sec = 0;
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tv.tv_usec = ESCAPE_PERIOD * 1000L;
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evtimer_del(&tty->key_timer);
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evtimer_set(&tty->key_timer, tty_keys_callback, tty);
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evtimer_add(&tty->key_timer, &tv);
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tty->flags |= TTY_ESCAPE;
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return (0);
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found:
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evtimer_del(&tty->key_timer);
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tty->key_callback(key, &mouse, tty->key_data);
|
|
tty->flags &= ~TTY_ESCAPE;
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
tty_keys_callback(unused int fd, unused short events, void *data)
|
|
{
|
|
struct tty *tty = data;
|
|
|
|
if (tty->flags & TTY_ESCAPE)
|
|
tty_keys_next(tty);
|
|
}
|
|
|
|
int
|
|
tty_keys_mouse(char *buf, size_t len, size_t *size, struct mouse_event *m)
|
|
{
|
|
/*
|
|
* Mouse sequences are \033[M followed by three characters indicating
|
|
* buttons, X and Y, all based at 32 with 1,1 top-left.
|
|
*/
|
|
|
|
log_debug("mouse input is: %.*s", (int) len, buf);
|
|
if (len != 6 || memcmp(buf, "\033[M", 3) != 0)
|
|
return (KEYC_NONE);
|
|
*size = 6;
|
|
|
|
m->b = buf[3];
|
|
m->x = buf[4];
|
|
m->y = buf[5];
|
|
if (m->b < 32 || m->x < 33 || m->y < 33)
|
|
return (KEYC_NONE);
|
|
m->b -= 32;
|
|
m->x -= 33;
|
|
m->y -= 33;
|
|
return (KEYC_MOUSE);
|
|
}
|