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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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 <limits.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.
*/
void tty_keys_add1(struct tty_key **, const char *, int);
void tty_keys_add(struct tty *, const char *, int);
void tty_keys_free1(struct tty_key *);
struct tty_key *tty_keys_find1(
struct tty_key *, const char *, size_t, size_t *);
struct tty_key *tty_keys_find(struct tty *, const char *, size_t, size_t *);
void tty_keys_callback(int, short, void *);
int tty_keys_mouse(struct tty *, const char *, size_t, size_t *);
int tty_keys_device(struct tty *, const char *, size_t, size_t *);
/* Default raw keys. */
struct tty_default_key_raw {
const char *string;
int key;
};
const struct tty_default_key_raw tty_default_raw_keys[] = {
/*
* Numeric keypad. Just use the vt100 escape sequences here and always
* put the terminal into keypad_xmit mode. Translation of numbers
* mode/applications mode is done in input-keys.c.
*/
{ "\033Oo", KEYC_KP_SLASH },
{ "\033Oj", KEYC_KP_STAR },
{ "\033Om", KEYC_KP_MINUS },
{ "\033Ow", KEYC_KP_SEVEN },
{ "\033Ox", KEYC_KP_EIGHT },
{ "\033Oy", KEYC_KP_NINE },
{ "\033Ok", KEYC_KP_PLUS },
{ "\033Ot", KEYC_KP_FOUR },
{ "\033Ou", KEYC_KP_FIVE },
{ "\033Ov", KEYC_KP_SIX },
{ "\033Oq", KEYC_KP_ONE },
{ "\033Or", KEYC_KP_TWO },
{ "\033Os", KEYC_KP_THREE },
{ "\033OM", KEYC_KP_ENTER },
{ "\033Op", KEYC_KP_ZERO },
{ "\033On", KEYC_KP_PERIOD },
/* Arrow keys. */
{ "\033OA", KEYC_UP },
{ "\033OB", KEYC_DOWN },
{ "\033OC", KEYC_RIGHT },
{ "\033OD", KEYC_LEFT },
{ "\033[A", KEYC_UP },
{ "\033[B", KEYC_DOWN },
{ "\033[C", KEYC_RIGHT },
{ "\033[D", KEYC_LEFT },
/* Other (xterm) "cursor" keys. */
{ "\033OH", KEYC_HOME },
{ "\033OF", KEYC_END },
{ "\033[H", KEYC_HOME },
{ "\033[F", KEYC_END },
/* rxvt-style arrow + modifier keys. */
{ "\033Oa", KEYC_UP|KEYC_CTRL },
{ "\033Ob", KEYC_DOWN|KEYC_CTRL },
{ "\033Oc", KEYC_RIGHT|KEYC_CTRL },
{ "\033Od", KEYC_LEFT|KEYC_CTRL },
{ "\033[a", KEYC_UP|KEYC_SHIFT },
{ "\033[b", KEYC_DOWN|KEYC_SHIFT },
{ "\033[c", KEYC_RIGHT|KEYC_SHIFT },
{ "\033[d", KEYC_LEFT|KEYC_SHIFT },
/* rxvt-style function + modifier keys (C = ^, S = $, C-S = @). */
{ "\033[11^", KEYC_F1|KEYC_CTRL },
{ "\033[12^", KEYC_F2|KEYC_CTRL },
{ "\033[13^", KEYC_F3|KEYC_CTRL },
{ "\033[14^", KEYC_F4|KEYC_CTRL },
{ "\033[15^", KEYC_F5|KEYC_CTRL },
{ "\033[17^", KEYC_F6|KEYC_CTRL },
{ "\033[18^", KEYC_F7|KEYC_CTRL },
{ "\033[19^", KEYC_F8|KEYC_CTRL },
{ "\033[20^", KEYC_F9|KEYC_CTRL },
{ "\033[21^", KEYC_F10|KEYC_CTRL },
{ "\033[23^", KEYC_F11|KEYC_CTRL },
{ "\033[24^", KEYC_F12|KEYC_CTRL },
{ "\033[2^", KEYC_IC|KEYC_CTRL },
{ "\033[3^", KEYC_DC|KEYC_CTRL },
{ "\033[7^", KEYC_HOME|KEYC_CTRL },
{ "\033[8^", KEYC_END|KEYC_CTRL },
{ "\033[6^", KEYC_NPAGE|KEYC_CTRL },
{ "\033[5^", KEYC_PPAGE|KEYC_CTRL },
{ "\033[11$", KEYC_F1|KEYC_SHIFT },
{ "\033[12$", KEYC_F2|KEYC_SHIFT },
{ "\033[13$", KEYC_F3|KEYC_SHIFT },
{ "\033[14$", KEYC_F4|KEYC_SHIFT },
{ "\033[15$", KEYC_F5|KEYC_SHIFT },
{ "\033[17$", KEYC_F6|KEYC_SHIFT },
{ "\033[18$", KEYC_F7|KEYC_SHIFT },
{ "\033[19$", KEYC_F8|KEYC_SHIFT },
{ "\033[20$", KEYC_F9|KEYC_SHIFT },
{ "\033[21$", KEYC_F10|KEYC_SHIFT },
{ "\033[23$", KEYC_F11|KEYC_SHIFT },
{ "\033[24$", KEYC_F12|KEYC_SHIFT },
{ "\033[2$", KEYC_IC|KEYC_SHIFT },
{ "\033[3$", KEYC_DC|KEYC_SHIFT },
{ "\033[7$", KEYC_HOME|KEYC_SHIFT },
{ "\033[8$", KEYC_END|KEYC_SHIFT },
{ "\033[6$", KEYC_NPAGE|KEYC_SHIFT },
{ "\033[5$", KEYC_PPAGE|KEYC_SHIFT },
{ "\033[11@", KEYC_F1|KEYC_CTRL|KEYC_SHIFT },
{ "\033[12@", KEYC_F2|KEYC_CTRL|KEYC_SHIFT },
{ "\033[13@", KEYC_F3|KEYC_CTRL|KEYC_SHIFT },
{ "\033[14@", KEYC_F4|KEYC_CTRL|KEYC_SHIFT },
{ "\033[15@", KEYC_F5|KEYC_CTRL|KEYC_SHIFT },
{ "\033[17@", KEYC_F6|KEYC_CTRL|KEYC_SHIFT },
{ "\033[18@", KEYC_F7|KEYC_CTRL|KEYC_SHIFT },
{ "\033[19@", KEYC_F8|KEYC_CTRL|KEYC_SHIFT },
{ "\033[20@", KEYC_F9|KEYC_CTRL|KEYC_SHIFT },
{ "\033[21@", KEYC_F10|KEYC_CTRL|KEYC_SHIFT },
{ "\033[23@", KEYC_F11|KEYC_CTRL|KEYC_SHIFT },
{ "\033[24@", KEYC_F12|KEYC_CTRL|KEYC_SHIFT },
{ "\033[2@", KEYC_IC|KEYC_CTRL|KEYC_SHIFT },
{ "\033[3@", KEYC_DC|KEYC_CTRL|KEYC_SHIFT },
{ "\033[7@", KEYC_HOME|KEYC_CTRL|KEYC_SHIFT },
{ "\033[8@", KEYC_END|KEYC_CTRL|KEYC_SHIFT },
{ "\033[6@", KEYC_NPAGE|KEYC_CTRL|KEYC_SHIFT },
{ "\033[5@", KEYC_PPAGE|KEYC_CTRL|KEYC_SHIFT },
/* Focus tracking. */
{ "\033[I", KEYC_FOCUS_IN },
{ "\033[O", KEYC_FOCUS_OUT },
};
/* Default terminfo(5) keys. */
struct tty_default_key_code {
enum tty_code_code code;
int key;
};
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_ESCAPE },
{ TTYC_KF50, KEYC_F2|KEYC_ESCAPE },
{ TTYC_KF51, KEYC_F3|KEYC_ESCAPE },
{ TTYC_KF52, KEYC_F4|KEYC_ESCAPE },
{ TTYC_KF53, KEYC_F5|KEYC_ESCAPE },
{ TTYC_KF54, KEYC_F6|KEYC_ESCAPE },
{ TTYC_KF55, KEYC_F7|KEYC_ESCAPE },
{ TTYC_KF56, KEYC_F8|KEYC_ESCAPE },
{ TTYC_KF57, KEYC_F9|KEYC_ESCAPE },
{ TTYC_KF58, KEYC_F10|KEYC_ESCAPE },
{ TTYC_KF59, KEYC_F11|KEYC_ESCAPE },
{ TTYC_KF60, KEYC_F12|KEYC_ESCAPE },
{ TTYC_KF61, KEYC_F1|KEYC_ESCAPE|KEYC_SHIFT },
{ TTYC_KF62, KEYC_F2|KEYC_ESCAPE|KEYC_SHIFT },
{ TTYC_KF63, KEYC_F3|KEYC_ESCAPE|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 },
{ TTYC_KCUD1, KEYC_DOWN },
{ TTYC_KCUB1, KEYC_LEFT },
{ TTYC_KCUF1, KEYC_RIGHT },
/* Key and modifier capabilities. */
{ TTYC_KDC2, KEYC_DC|KEYC_SHIFT },
{ TTYC_KDC3, KEYC_DC|KEYC_ESCAPE },
{ TTYC_KDC4, KEYC_DC|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KDC5, KEYC_DC|KEYC_CTRL },
{ TTYC_KDC6, KEYC_DC|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KDC7, KEYC_DC|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KDN2, KEYC_DOWN|KEYC_SHIFT },
{ TTYC_KDN3, KEYC_DOWN|KEYC_ESCAPE },
{ TTYC_KDN4, KEYC_DOWN|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KDN5, KEYC_DOWN|KEYC_CTRL },
{ TTYC_KDN6, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KDN7, KEYC_DOWN|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KEND2, KEYC_END|KEYC_SHIFT },
{ TTYC_KEND3, KEYC_END|KEYC_ESCAPE },
{ TTYC_KEND4, KEYC_END|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KEND5, KEYC_END|KEYC_CTRL },
{ TTYC_KEND6, KEYC_END|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KEND7, KEYC_END|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KHOM2, KEYC_HOME|KEYC_SHIFT },
{ TTYC_KHOM3, KEYC_HOME|KEYC_ESCAPE },
{ TTYC_KHOM4, KEYC_HOME|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KHOM5, KEYC_HOME|KEYC_CTRL },
{ TTYC_KHOM6, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KHOM7, KEYC_HOME|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KIC2, KEYC_IC|KEYC_SHIFT },
{ TTYC_KIC3, KEYC_IC|KEYC_ESCAPE },
{ TTYC_KIC4, KEYC_IC|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KIC5, KEYC_IC|KEYC_CTRL },
{ TTYC_KIC6, KEYC_IC|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KIC7, KEYC_IC|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KLFT2, KEYC_LEFT|KEYC_SHIFT },
{ TTYC_KLFT3, KEYC_LEFT|KEYC_ESCAPE },
{ TTYC_KLFT4, KEYC_LEFT|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KLFT5, KEYC_LEFT|KEYC_CTRL },
{ TTYC_KLFT6, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KLFT7, KEYC_LEFT|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KNXT2, KEYC_NPAGE|KEYC_SHIFT },
{ TTYC_KNXT3, KEYC_NPAGE|KEYC_ESCAPE },
{ TTYC_KNXT4, KEYC_NPAGE|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KNXT5, KEYC_NPAGE|KEYC_CTRL },
{ TTYC_KNXT6, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KNXT7, KEYC_NPAGE|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KPRV2, KEYC_PPAGE|KEYC_SHIFT },
{ TTYC_KPRV3, KEYC_PPAGE|KEYC_ESCAPE },
{ TTYC_KPRV4, KEYC_PPAGE|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KPRV5, KEYC_PPAGE|KEYC_CTRL },
{ TTYC_KPRV6, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KPRV7, KEYC_PPAGE|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KRIT2, KEYC_RIGHT|KEYC_SHIFT },
{ TTYC_KRIT3, KEYC_RIGHT|KEYC_ESCAPE },
{ TTYC_KRIT4, KEYC_RIGHT|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KRIT5, KEYC_RIGHT|KEYC_CTRL },
{ TTYC_KRIT6, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KRIT7, KEYC_RIGHT|KEYC_ESCAPE|KEYC_CTRL },
{ TTYC_KUP2, KEYC_UP|KEYC_SHIFT },
{ TTYC_KUP3, KEYC_UP|KEYC_ESCAPE },
{ TTYC_KUP4, KEYC_UP|KEYC_SHIFT|KEYC_ESCAPE },
{ TTYC_KUP5, KEYC_UP|KEYC_CTRL },
{ TTYC_KUP6, KEYC_UP|KEYC_SHIFT|KEYC_CTRL },
{ TTYC_KUP7, KEYC_UP|KEYC_ESCAPE|KEYC_CTRL },
};
/* Add key to tree. */
void
tty_keys_add(struct tty *tty, const char *s, int key)
{
struct tty_key *tk;
size_t size;
const char *keystr;
keystr = key_string_lookup_key(key);
if ((tk = tty_keys_find(tty, s, strlen(s), &size)) == NULL) {
log_debug("new key %s: 0x%x (%s)", s, key, keystr);
tty_keys_add1(&tty->key_tree, s, key);
} else {
log_debug("replacing key %s: 0x%x (%s)", s, key, keystr);
tk->key = key;
}
}
/* Add next node to the tree. */
void
tty_keys_add1(struct tty_key **tkp, const char *s, int 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_NONE;
}
/* Find the next entry. */
if (*s == tk->ch) {
/* Move forward in string. */
s++;
/* If this is the end of the string, no more is necessary. */
if (*s == '\0') {
tk->key = key;
return;
}
/* Use the child tree for the next character. */
tkp = &tk->next;
} else {
if (*s < tk->ch)
tkp = &tk->left;
else if (*s > tk->ch)
tkp = &tk->right;
}
/* And recurse to add it. */
tty_keys_add1(tkp, s, key);
}
/* Initialise a key tree from the table. */
void
tty_keys_build(struct tty *tty)
{
const struct tty_default_key_raw *tdkr;
const struct tty_default_key_code *tdkc;
u_int i;
const char *s;
if (tty->key_tree != NULL)
tty_keys_free(tty);
tty->key_tree = NULL;
for (i = 0; i < nitems(tty_default_raw_keys); i++) {
tdkr = &tty_default_raw_keys[i];
s = tdkr->string;
if (*s != '\0')
tty_keys_add(tty, s, tdkr->key);
}
for (i = 0; i < nitems(tty_default_code_keys); i++) {
tdkc = &tty_default_code_keys[i];
s = tty_term_string(tty->term, tdkc->code);
if (*s != '\0')
tty_keys_add(tty, s, tdkc->key);
}
}
/* Free the entire key tree. */
void
tty_keys_free(struct tty *tty)
{
tty_keys_free1(tty->key_tree);
}
/* Free a single key. */
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. */
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. */
struct tty_key *
tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size)
{
/* 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_NONE))
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));
}
/*
* Process at least one key in the buffer and invoke tty->key_callback. Return
* 0 if there are no further keys, or 1 if there could be more in the buffer.
*/
int
tty_keys_next(struct tty *tty)
{
struct tty_key *tk;
struct timeval tv;
const char *buf;
size_t len, size;
cc_t bspace;
int key, delay, expired = 0;
/* Get key buffer. */
buf = EVBUFFER_DATA(tty->event->input);
len = EVBUFFER_LENGTH(tty->event->input);
if (len == 0)
return (0);
log_debug("keys are %zu (%.*s)", len, (int) len, buf);
/* Is this device attributes response? */
switch (tty_keys_device(tty, buf, len, &size)) {
case 0: /* yes */
key = KEYC_NONE;
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)) {
case 0: /* yes */
key = KEYC_MOUSE;
goto complete_key;
case -1: /* no, or not valid */
break;
case -2: /* yes, but we don't care. */
goto discard_key;
case 1: /* partial */
goto partial_key;
}
/* Look for matching key string and return if found. */
tk = tty_keys_find(tty, buf, len, &size);
if (tk != NULL) {
if (tk->next != NULL)
goto partial_key;
key = tk->key;
goto complete_key;
}
/* Try to parse a key with an xterm-style modifier. */
switch (xterm_keys_find(buf, len, &size, &key)) {
case 0: /* found */
goto complete_key;
case -1: /* not found */
break;
case 1:
goto partial_key;
}
first_key:
/* Is this a meta key? */
if (len >= 2 && buf[0] == '\033') {
if (buf[1] != '\033') {
key = buf[1] | KEYC_ESCAPE;
size = 2;
goto complete_key;
}
tk = tty_keys_find(tty, buf + 1, len - 1, &size);
if (tk != NULL && (!expired || tk->next == NULL)) {
size++; /* include escape */
if (tk->next != NULL)
goto partial_key;
key = tk->key;
if (key != KEYC_NONE)
key |= KEYC_ESCAPE;
goto complete_key;
}
}
/* No key found, take first. */
key = (u_char) *buf;
size = 1;
/*
* 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)
key = KEYC_BSPACE;
goto complete_key;
partial_key:
log_debug("partial key %.*s", (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("complete key %.*s %#x", (int) size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
/* Remove key timer. */
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
tty->flags &= ~TTY_TIMER;
/* Check for focus events. */
if (key == KEYC_FOCUS_OUT) {
tty->client->flags &= ~CLIENT_FOCUSED;
return (1);
} else if (key == KEYC_FOCUS_IN) {
tty->client->flags |= CLIENT_FOCUSED;
return (1);
}
/* Fire the key. */
if (key != KEYC_NONE)
server_client_handle_key(tty->client, key);
return (1);
discard_key:
log_debug("discard key %.*s %#x", (int) size, buf, key);
/* Remove data from buffer. */
evbuffer_drain(tty->event->input, size);
return (1);
}
/* Key timer callback. */
void
tty_keys_callback(unused int fd, unused short events, void *data)
{
struct tty *tty = data;
if (tty->flags & TTY_TIMER) {
while (tty_keys_next(tty))
;
}
}
/*
* Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial
* (probably a mouse sequence but need more data).
*/
int
tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size)
{
struct mouse_event *m = &tty->mouse;
struct utf8_data utf8data;
u_int i, value, x, y, b, sgr, sgr_b, sgr_rel;
unsigned char c;
/*
* 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 = sgr_b = sgr_rel = 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);
/*
* Third byte is M in old standard and UTF-8 extension, < in SGR
* extension.
*/
if (buf[2] == 'M') {
/* Read the three inputs. */
*size = 3;
for (i = 0; i < 3; i++) {
if (len <= *size)
return (1);
if (tty->mode & MODE_MOUSE_UTF8) {
if (utf8_open(&utf8data, buf[*size])) {
if (utf8data.size != 2)
return (-1);
(*size)++;
if (len <= *size)
return (1);
utf8_append(&utf8data, buf[*size]);
value = utf8_combine(&utf8data);
} else
value = (u_char) buf[*size];
(*size)++;
} else {
value = (u_char) buf[*size];
(*size)++;
}
if (i == 0)
b = value;
else if (i == 1)
x = value;
else
y = value;
}
log_debug("mouse input: %.*s", (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);
c = (u_char)buf[(*size)++];
if (c == ';')
break;
if (c < '0' || c > '9')
return (-1);
sgr_b = 10 * sgr_b + (c - '0');
}
while (1) {
if (len <= *size)
return (1);
c = (u_char)buf[(*size)++];
if (c == ';')
break;
if (c < '0' || c > '9')
return (-1);
x = 10 * x + (c - '0');
}
while (1) {
if (len <= *size)
return (1);
c = (u_char) buf[(*size)++];
if (c == 'M' || c == 'm')
break;
if (c < '0' || c > '9')
return (-1);
y = 10 * y + (c - '0');
}
log_debug("mouse input (sgr): %.*s", (int) *size, buf);
/* Check and return the mouse input. */
if (x < 1 || y < 1)
return (-1);
x--;
y--;
sgr = 1;
sgr_rel = (c == 'm');
/*
* 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_rel && (sgr_b & 64))
return (-2);
/* Figure out what b would be in old format. */
b = sgr_b;
if (sgr_rel)
b |= 3;
} else
return (-1);
/* Fill in mouse structure. */
if (~m->event & MOUSE_EVENT_WHEEL) {
m->lx = m->x;
m->ly = m->y;
}
m->xb = b;
m->sgr = sgr;
m->sgr_xb = sgr_b;
m->sgr_rel = sgr_rel;
m->x = x;
m->y = y;
if (b & MOUSE_MASK_WHEEL) {
if (b & MOUSE_MASK_SHIFT)
m->scroll = 1;
else
m->scroll = MOUSE_WHEEL_SCALE;
if (b & MOUSE_MASK_META)
m->scroll *= MOUSE_WHEEL_SCALE;
if (b & MOUSE_MASK_CTRL)
m->scroll *= MOUSE_WHEEL_SCALE;
b &= MOUSE_MASK_BUTTONS;
if (b == 0)
m->wheel = MOUSE_WHEEL_UP;
else if (b == 1)
m->wheel = MOUSE_WHEEL_DOWN;
m->event = MOUSE_EVENT_WHEEL;
m->button = 3;
} else if ((b & MOUSE_MASK_BUTTONS) == 3) {
if (~m->event & MOUSE_EVENT_DRAG && x == m->sx && y == m->sy) {
m->event = MOUSE_EVENT_CLICK;
m->clicks = (m->clicks + 1) % 3;
} else
m->event = MOUSE_EVENT_DRAG;
m->event |= MOUSE_EVENT_UP;
} else {
if (b & MOUSE_MASK_DRAG)
m->event = MOUSE_EVENT_DRAG;
else {
m->event = MOUSE_EVENT_DOWN;
if (x != m->sx || y != m->sy)
m->clicks = 0;
}
m->button = (b & MOUSE_MASK_BUTTONS);
}
m->sx = x;
m->sy = y;
return (0);
}
/*
* Handle device attributes input. Returns 0 for success, -1 for failure, 1 for
* partial.
*/
int
tty_keys_device(struct tty *tty, const char *buf, size_t len, size_t *size)
{
u_int i, class;
char tmp[64], *endptr;
/*
* Primary device attributes are \033[?a;b and secondary are
* \033[>a;b;c.
*/
*size = 0;
/* First three bytes are always \033[?. */
if (buf[0] != '\033')
return (-1);
if (len == 1)
return (1);
if (buf[1] != '[')
return (-1);
if (len == 2)
return (1);
if (buf[2] != '>' && buf[2] != '?')
return (-1);
if (len == 3)
return (1);
/* Copy the rest up to a 'c'. */
for (i = 0; i < (sizeof tmp) - 1 && buf[3 + i] != 'c'; i++) {
if (3 + i == len)
return (1);
tmp[i] = buf[3 + i];
}
if (i == (sizeof tmp) - 1)
return (-1);
tmp[i] = '\0';
*size = 4 + i;
/* Only primary is of interest. */
if (buf[2] != '?')
return (0);
/* Convert service class. */
class = strtoul(tmp, &endptr, 10);
if (*endptr != ';')
class = 0;
log_debug("received service class %u", class);
tty_set_class(tty, class);
return (0);
}