1 /* $OpenBSD: tty-keys.c,v 1.122 2020/01/28 11:39:51 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/time.h> 21 22 #include <netinet/in.h> 23 24 #include <limits.h> 25 #include <resolv.h> 26 #include <stdlib.h> 27 #include <string.h> 28 #include <termios.h> 29 #include <unistd.h> 30 31 #include "tmux.h" 32 33 /* 34 * Handle keys input from the outside terminal. tty_default_*_keys[] are a base 35 * table of supported keys which are looked up in terminfo(5) and translated 36 * into a ternary tree. 37 */ 38 39 static void tty_keys_add1(struct tty_key **, const char *, key_code); 40 static void tty_keys_add(struct tty *, const char *, key_code); 41 static void tty_keys_free1(struct tty_key *); 42 static struct tty_key *tty_keys_find1(struct tty_key *, const char *, size_t, 43 size_t *); 44 static struct tty_key *tty_keys_find(struct tty *, const char *, size_t, 45 size_t *); 46 static int tty_keys_next1(struct tty *, const char *, size_t, key_code *, 47 size_t *, int); 48 static void tty_keys_callback(int, short, void *); 49 static int tty_keys_mouse(struct tty *, const char *, size_t, size_t *, 50 struct mouse_event *); 51 static int tty_keys_clipboard(struct tty *, const char *, size_t, 52 size_t *); 53 static int tty_keys_device_attributes(struct tty *, const char *, size_t, 54 size_t *); 55 static int tty_keys_device_status_report(struct tty *, const char *, 56 size_t, size_t *); 57 58 /* Default raw keys. */ 59 struct tty_default_key_raw { 60 const char *string; 61 key_code key; 62 }; 63 static const struct tty_default_key_raw tty_default_raw_keys[] = { 64 /* 65 * Numeric keypad. Just use the vt100 escape sequences here and always 66 * put the terminal into keypad_xmit mode. Translation of numbers 67 * mode/applications mode is done in input-keys.c. 68 */ 69 { "\033Oo", KEYC_KP_SLASH }, 70 { "\033Oj", KEYC_KP_STAR }, 71 { "\033Om", KEYC_KP_MINUS }, 72 { "\033Ow", KEYC_KP_SEVEN }, 73 { "\033Ox", KEYC_KP_EIGHT }, 74 { "\033Oy", KEYC_KP_NINE }, 75 { "\033Ok", KEYC_KP_PLUS }, 76 { "\033Ot", KEYC_KP_FOUR }, 77 { "\033Ou", KEYC_KP_FIVE }, 78 { "\033Ov", KEYC_KP_SIX }, 79 { "\033Oq", KEYC_KP_ONE }, 80 { "\033Or", KEYC_KP_TWO }, 81 { "\033Os", KEYC_KP_THREE }, 82 { "\033OM", KEYC_KP_ENTER }, 83 { "\033Op", KEYC_KP_ZERO }, 84 { "\033On", KEYC_KP_PERIOD }, 85 86 /* Arrow keys. */ 87 { "\033OA", KEYC_UP }, 88 { "\033OB", KEYC_DOWN }, 89 { "\033OC", KEYC_RIGHT }, 90 { "\033OD", KEYC_LEFT }, 91 92 { "\033[A", KEYC_UP }, 93 { "\033[B", KEYC_DOWN }, 94 { "\033[C", KEYC_RIGHT }, 95 { "\033[D", KEYC_LEFT }, 96 97 /* Other (xterm) "cursor" keys. */ 98 { "\033OH", KEYC_HOME }, 99 { "\033OF", KEYC_END }, 100 101 { "\033[H", KEYC_HOME }, 102 { "\033[F", KEYC_END }, 103 104 /* rxvt-style arrow + modifier keys. */ 105 { "\033Oa", KEYC_UP|KEYC_CTRL }, 106 { "\033Ob", KEYC_DOWN|KEYC_CTRL }, 107 { "\033Oc", KEYC_RIGHT|KEYC_CTRL }, 108 { "\033Od", KEYC_LEFT|KEYC_CTRL }, 109 110 { "\033[a", KEYC_UP|KEYC_SHIFT }, 111 { "\033[b", KEYC_DOWN|KEYC_SHIFT }, 112 { "\033[c", KEYC_RIGHT|KEYC_SHIFT }, 113 { "\033[d", KEYC_LEFT|KEYC_SHIFT }, 114 115 /* rxvt-style function + modifier keys (C = ^, S = $, C-S = @). */ 116 { "\033[11^", KEYC_F1|KEYC_CTRL }, 117 { "\033[12^", KEYC_F2|KEYC_CTRL }, 118 { "\033[13^", KEYC_F3|KEYC_CTRL }, 119 { "\033[14^", KEYC_F4|KEYC_CTRL }, 120 { "\033[15^", KEYC_F5|KEYC_CTRL }, 121 { "\033[17^", KEYC_F6|KEYC_CTRL }, 122 { "\033[18^", KEYC_F7|KEYC_CTRL }, 123 { "\033[19^", KEYC_F8|KEYC_CTRL }, 124 { "\033[20^", KEYC_F9|KEYC_CTRL }, 125 { "\033[21^", KEYC_F10|KEYC_CTRL }, 126 { "\033[23^", KEYC_F11|KEYC_CTRL }, 127 { "\033[24^", KEYC_F12|KEYC_CTRL }, 128 { "\033[2^", KEYC_IC|KEYC_CTRL }, 129 { "\033[3^", KEYC_DC|KEYC_CTRL }, 130 { "\033[7^", KEYC_HOME|KEYC_CTRL }, 131 { "\033[8^", KEYC_END|KEYC_CTRL }, 132 { "\033[6^", KEYC_NPAGE|KEYC_CTRL }, 133 { "\033[5^", KEYC_PPAGE|KEYC_CTRL }, 134 135 { "\033[11$", KEYC_F1|KEYC_SHIFT }, 136 { "\033[12$", KEYC_F2|KEYC_SHIFT }, 137 { "\033[13$", KEYC_F3|KEYC_SHIFT }, 138 { "\033[14$", KEYC_F4|KEYC_SHIFT }, 139 { "\033[15$", KEYC_F5|KEYC_SHIFT }, 140 { "\033[17$", KEYC_F6|KEYC_SHIFT }, 141 { "\033[18$", KEYC_F7|KEYC_SHIFT }, 142 { "\033[19$", KEYC_F8|KEYC_SHIFT }, 143 { "\033[20$", KEYC_F9|KEYC_SHIFT }, 144 { "\033[21$", KEYC_F10|KEYC_SHIFT }, 145 { "\033[23$", KEYC_F11|KEYC_SHIFT }, 146 { "\033[24$", KEYC_F12|KEYC_SHIFT }, 147 { "\033[2$", KEYC_IC|KEYC_SHIFT }, 148 { "\033[3$", KEYC_DC|KEYC_SHIFT }, 149 { "\033[7$", KEYC_HOME|KEYC_SHIFT }, 150 { "\033[8$", KEYC_END|KEYC_SHIFT }, 151 { "\033[6$", KEYC_NPAGE|KEYC_SHIFT }, 152 { "\033[5$", KEYC_PPAGE|KEYC_SHIFT }, 153 154 { "\033[11@", KEYC_F1|KEYC_CTRL|KEYC_SHIFT }, 155 { "\033[12@", KEYC_F2|KEYC_CTRL|KEYC_SHIFT }, 156 { "\033[13@", KEYC_F3|KEYC_CTRL|KEYC_SHIFT }, 157 { "\033[14@", KEYC_F4|KEYC_CTRL|KEYC_SHIFT }, 158 { "\033[15@", KEYC_F5|KEYC_CTRL|KEYC_SHIFT }, 159 { "\033[17@", KEYC_F6|KEYC_CTRL|KEYC_SHIFT }, 160 { "\033[18@", KEYC_F7|KEYC_CTRL|KEYC_SHIFT }, 161 { "\033[19@", KEYC_F8|KEYC_CTRL|KEYC_SHIFT }, 162 { "\033[20@", KEYC_F9|KEYC_CTRL|KEYC_SHIFT }, 163 { "\033[21@", KEYC_F10|KEYC_CTRL|KEYC_SHIFT }, 164 { "\033[23@", KEYC_F11|KEYC_CTRL|KEYC_SHIFT }, 165 { "\033[24@", KEYC_F12|KEYC_CTRL|KEYC_SHIFT }, 166 { "\033[2@", KEYC_IC|KEYC_CTRL|KEYC_SHIFT }, 167 { "\033[3@", KEYC_DC|KEYC_CTRL|KEYC_SHIFT }, 168 { "\033[7@", KEYC_HOME|KEYC_CTRL|KEYC_SHIFT }, 169 { "\033[8@", KEYC_END|KEYC_CTRL|KEYC_SHIFT }, 170 { "\033[6@", KEYC_NPAGE|KEYC_CTRL|KEYC_SHIFT }, 171 { "\033[5@", KEYC_PPAGE|KEYC_CTRL|KEYC_SHIFT }, 172 173 /* Focus tracking. */ 174 { "\033[I", KEYC_FOCUS_IN }, 175 { "\033[O", KEYC_FOCUS_OUT }, 176 177 /* Paste keys. */ 178 { "\033[200~", KEYC_PASTE_START }, 179 { "\033[201~", KEYC_PASTE_END }, 180 }; 181 182 /* 183 * Default terminfo(5) keys. Any keys that have builtin modifiers 184 * (that is, where the key itself contains the modifiers) has the 185 * KEYC_XTERM flag set so a leading escape is not treated as meta (and 186 * probably removed). 187 */ 188 struct tty_default_key_code { 189 enum tty_code_code code; 190 key_code key; 191 }; 192 static const struct tty_default_key_code tty_default_code_keys[] = { 193 /* Function keys. */ 194 { TTYC_KF1, KEYC_F1 }, 195 { TTYC_KF2, KEYC_F2 }, 196 { TTYC_KF3, KEYC_F3 }, 197 { TTYC_KF4, KEYC_F4 }, 198 { TTYC_KF5, KEYC_F5 }, 199 { TTYC_KF6, KEYC_F6 }, 200 { TTYC_KF7, KEYC_F7 }, 201 { TTYC_KF8, KEYC_F8 }, 202 { TTYC_KF9, KEYC_F9 }, 203 { TTYC_KF10, KEYC_F10 }, 204 { TTYC_KF11, KEYC_F11 }, 205 { TTYC_KF12, KEYC_F12 }, 206 207 { TTYC_KF13, KEYC_F1|KEYC_SHIFT|KEYC_XTERM }, 208 { TTYC_KF14, KEYC_F2|KEYC_SHIFT|KEYC_XTERM }, 209 { TTYC_KF15, KEYC_F3|KEYC_SHIFT|KEYC_XTERM }, 210 { TTYC_KF16, KEYC_F4|KEYC_SHIFT|KEYC_XTERM }, 211 { TTYC_KF17, KEYC_F5|KEYC_SHIFT|KEYC_XTERM }, 212 { TTYC_KF18, KEYC_F6|KEYC_SHIFT|KEYC_XTERM }, 213 { TTYC_KF19, KEYC_F7|KEYC_SHIFT|KEYC_XTERM }, 214 { TTYC_KF20, KEYC_F8|KEYC_SHIFT|KEYC_XTERM }, 215 { TTYC_KF21, KEYC_F9|KEYC_SHIFT|KEYC_XTERM }, 216 { TTYC_KF22, KEYC_F10|KEYC_SHIFT|KEYC_XTERM }, 217 { TTYC_KF23, KEYC_F11|KEYC_SHIFT|KEYC_XTERM }, 218 { TTYC_KF24, KEYC_F12|KEYC_SHIFT|KEYC_XTERM }, 219 220 { TTYC_KF25, KEYC_F1|KEYC_CTRL|KEYC_XTERM }, 221 { TTYC_KF26, KEYC_F2|KEYC_CTRL|KEYC_XTERM }, 222 { TTYC_KF27, KEYC_F3|KEYC_CTRL|KEYC_XTERM }, 223 { TTYC_KF28, KEYC_F4|KEYC_CTRL|KEYC_XTERM }, 224 { TTYC_KF29, KEYC_F5|KEYC_CTRL|KEYC_XTERM }, 225 { TTYC_KF30, KEYC_F6|KEYC_CTRL|KEYC_XTERM }, 226 { TTYC_KF31, KEYC_F7|KEYC_CTRL|KEYC_XTERM }, 227 { TTYC_KF32, KEYC_F8|KEYC_CTRL|KEYC_XTERM }, 228 { TTYC_KF33, KEYC_F9|KEYC_CTRL|KEYC_XTERM }, 229 { TTYC_KF34, KEYC_F10|KEYC_CTRL|KEYC_XTERM }, 230 { TTYC_KF35, KEYC_F11|KEYC_CTRL|KEYC_XTERM }, 231 { TTYC_KF36, KEYC_F12|KEYC_CTRL|KEYC_XTERM }, 232 233 { TTYC_KF37, KEYC_F1|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 234 { TTYC_KF38, KEYC_F2|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 235 { TTYC_KF39, KEYC_F3|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 236 { TTYC_KF40, KEYC_F4|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 237 { TTYC_KF41, KEYC_F5|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 238 { TTYC_KF42, KEYC_F6|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 239 { TTYC_KF43, KEYC_F7|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 240 { TTYC_KF44, KEYC_F8|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 241 { TTYC_KF45, KEYC_F9|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 242 { TTYC_KF46, KEYC_F10|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 243 { TTYC_KF47, KEYC_F11|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 244 { TTYC_KF48, KEYC_F12|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 245 246 { TTYC_KF49, KEYC_F1|KEYC_ESCAPE|KEYC_XTERM }, 247 { TTYC_KF50, KEYC_F2|KEYC_ESCAPE|KEYC_XTERM }, 248 { TTYC_KF51, KEYC_F3|KEYC_ESCAPE|KEYC_XTERM }, 249 { TTYC_KF52, KEYC_F4|KEYC_ESCAPE|KEYC_XTERM }, 250 { TTYC_KF53, KEYC_F5|KEYC_ESCAPE|KEYC_XTERM }, 251 { TTYC_KF54, KEYC_F6|KEYC_ESCAPE|KEYC_XTERM }, 252 { TTYC_KF55, KEYC_F7|KEYC_ESCAPE|KEYC_XTERM }, 253 { TTYC_KF56, KEYC_F8|KEYC_ESCAPE|KEYC_XTERM }, 254 { TTYC_KF57, KEYC_F9|KEYC_ESCAPE|KEYC_XTERM }, 255 { TTYC_KF58, KEYC_F10|KEYC_ESCAPE|KEYC_XTERM }, 256 { TTYC_KF59, KEYC_F11|KEYC_ESCAPE|KEYC_XTERM }, 257 { TTYC_KF60, KEYC_F12|KEYC_ESCAPE|KEYC_XTERM }, 258 259 { TTYC_KF61, KEYC_F1|KEYC_ESCAPE|KEYC_SHIFT|KEYC_XTERM }, 260 { TTYC_KF62, KEYC_F2|KEYC_ESCAPE|KEYC_SHIFT|KEYC_XTERM }, 261 { TTYC_KF63, KEYC_F3|KEYC_ESCAPE|KEYC_SHIFT|KEYC_XTERM }, 262 263 { TTYC_KICH1, KEYC_IC }, 264 { TTYC_KDCH1, KEYC_DC }, 265 { TTYC_KHOME, KEYC_HOME }, 266 { TTYC_KEND, KEYC_END }, 267 { TTYC_KNP, KEYC_NPAGE }, 268 { TTYC_KPP, KEYC_PPAGE }, 269 { TTYC_KCBT, KEYC_BTAB }, 270 271 /* Arrow keys from terminfo. */ 272 { TTYC_KCUU1, KEYC_UP }, 273 { TTYC_KCUD1, KEYC_DOWN }, 274 { TTYC_KCUB1, KEYC_LEFT }, 275 { TTYC_KCUF1, KEYC_RIGHT }, 276 277 /* Key and modifier capabilities. */ 278 { TTYC_KDC2, KEYC_DC|KEYC_SHIFT|KEYC_XTERM }, 279 { TTYC_KDC3, KEYC_DC|KEYC_ESCAPE|KEYC_XTERM }, 280 { TTYC_KDC4, KEYC_DC|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 281 { TTYC_KDC5, KEYC_DC|KEYC_CTRL|KEYC_XTERM }, 282 { TTYC_KDC6, KEYC_DC|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 283 { TTYC_KDC7, KEYC_DC|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 284 { TTYC_KIND, KEYC_DOWN|KEYC_SHIFT|KEYC_XTERM }, 285 { TTYC_KDN2, KEYC_DOWN|KEYC_SHIFT|KEYC_XTERM }, 286 { TTYC_KDN3, KEYC_DOWN|KEYC_ESCAPE|KEYC_XTERM }, 287 { TTYC_KDN4, KEYC_DOWN|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 288 { TTYC_KDN5, KEYC_DOWN|KEYC_CTRL|KEYC_XTERM }, 289 { TTYC_KDN6, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 290 { TTYC_KDN7, KEYC_DOWN|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 291 { TTYC_KEND2, KEYC_END|KEYC_SHIFT|KEYC_XTERM }, 292 { TTYC_KEND3, KEYC_END|KEYC_ESCAPE|KEYC_XTERM }, 293 { TTYC_KEND4, KEYC_END|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 294 { TTYC_KEND5, KEYC_END|KEYC_CTRL|KEYC_XTERM }, 295 { TTYC_KEND6, KEYC_END|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 296 { TTYC_KEND7, KEYC_END|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 297 { TTYC_KHOM2, KEYC_HOME|KEYC_SHIFT|KEYC_XTERM }, 298 { TTYC_KHOM3, KEYC_HOME|KEYC_ESCAPE|KEYC_XTERM }, 299 { TTYC_KHOM4, KEYC_HOME|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 300 { TTYC_KHOM5, KEYC_HOME|KEYC_CTRL|KEYC_XTERM }, 301 { TTYC_KHOM6, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 302 { TTYC_KHOM7, KEYC_HOME|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 303 { TTYC_KIC2, KEYC_IC|KEYC_SHIFT|KEYC_XTERM }, 304 { TTYC_KIC3, KEYC_IC|KEYC_ESCAPE|KEYC_XTERM }, 305 { TTYC_KIC4, KEYC_IC|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 306 { TTYC_KIC5, KEYC_IC|KEYC_CTRL|KEYC_XTERM }, 307 { TTYC_KIC6, KEYC_IC|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 308 { TTYC_KIC7, KEYC_IC|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 309 { TTYC_KLFT2, KEYC_LEFT|KEYC_SHIFT|KEYC_XTERM }, 310 { TTYC_KLFT3, KEYC_LEFT|KEYC_ESCAPE|KEYC_XTERM }, 311 { TTYC_KLFT4, KEYC_LEFT|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 312 { TTYC_KLFT5, KEYC_LEFT|KEYC_CTRL|KEYC_XTERM }, 313 { TTYC_KLFT6, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 314 { TTYC_KLFT7, KEYC_LEFT|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 315 { TTYC_KNXT2, KEYC_NPAGE|KEYC_SHIFT|KEYC_XTERM }, 316 { TTYC_KNXT3, KEYC_NPAGE|KEYC_ESCAPE|KEYC_XTERM }, 317 { TTYC_KNXT4, KEYC_NPAGE|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 318 { TTYC_KNXT5, KEYC_NPAGE|KEYC_CTRL|KEYC_XTERM }, 319 { TTYC_KNXT6, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 320 { TTYC_KNXT7, KEYC_NPAGE|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 321 { TTYC_KPRV2, KEYC_PPAGE|KEYC_SHIFT|KEYC_XTERM }, 322 { TTYC_KPRV3, KEYC_PPAGE|KEYC_ESCAPE|KEYC_XTERM }, 323 { TTYC_KPRV4, KEYC_PPAGE|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 324 { TTYC_KPRV5, KEYC_PPAGE|KEYC_CTRL|KEYC_XTERM }, 325 { TTYC_KPRV6, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 326 { TTYC_KPRV7, KEYC_PPAGE|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 327 { TTYC_KRIT2, KEYC_RIGHT|KEYC_SHIFT|KEYC_XTERM }, 328 { TTYC_KRIT3, KEYC_RIGHT|KEYC_ESCAPE|KEYC_XTERM }, 329 { TTYC_KRIT4, KEYC_RIGHT|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 330 { TTYC_KRIT5, KEYC_RIGHT|KEYC_CTRL|KEYC_XTERM }, 331 { TTYC_KRIT6, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 332 { TTYC_KRIT7, KEYC_RIGHT|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 333 { TTYC_KRI, KEYC_UP|KEYC_SHIFT|KEYC_XTERM }, 334 { TTYC_KUP2, KEYC_UP|KEYC_SHIFT|KEYC_XTERM }, 335 { TTYC_KUP3, KEYC_UP|KEYC_ESCAPE|KEYC_XTERM }, 336 { TTYC_KUP4, KEYC_UP|KEYC_SHIFT|KEYC_ESCAPE|KEYC_XTERM }, 337 { TTYC_KUP5, KEYC_UP|KEYC_CTRL|KEYC_XTERM }, 338 { TTYC_KUP6, KEYC_UP|KEYC_SHIFT|KEYC_CTRL|KEYC_XTERM }, 339 { TTYC_KUP7, KEYC_UP|KEYC_ESCAPE|KEYC_CTRL|KEYC_XTERM }, 340 }; 341 342 /* Add key to tree. */ 343 static void 344 tty_keys_add(struct tty *tty, const char *s, key_code key) 345 { 346 struct tty_key *tk; 347 size_t size; 348 const char *keystr; 349 350 keystr = key_string_lookup_key(key); 351 if ((tk = tty_keys_find(tty, s, strlen(s), &size)) == NULL) { 352 log_debug("new key %s: 0x%llx (%s)", s, key, keystr); 353 tty_keys_add1(&tty->key_tree, s, key); 354 } else { 355 log_debug("replacing key %s: 0x%llx (%s)", s, key, keystr); 356 tk->key = key; 357 } 358 } 359 360 /* Add next node to the tree. */ 361 static void 362 tty_keys_add1(struct tty_key **tkp, const char *s, key_code key) 363 { 364 struct tty_key *tk; 365 366 /* Allocate a tree entry if there isn't one already. */ 367 tk = *tkp; 368 if (tk == NULL) { 369 tk = *tkp = xcalloc(1, sizeof *tk); 370 tk->ch = *s; 371 tk->key = KEYC_UNKNOWN; 372 } 373 374 /* Find the next entry. */ 375 if (*s == tk->ch) { 376 /* Move forward in string. */ 377 s++; 378 379 /* If this is the end of the string, no more is necessary. */ 380 if (*s == '\0') { 381 tk->key = key; 382 return; 383 } 384 385 /* Use the child tree for the next character. */ 386 tkp = &tk->next; 387 } else { 388 if (*s < tk->ch) 389 tkp = &tk->left; 390 else if (*s > tk->ch) 391 tkp = &tk->right; 392 } 393 394 /* And recurse to add it. */ 395 tty_keys_add1(tkp, s, key); 396 } 397 398 /* Initialise a key tree from the table. */ 399 void 400 tty_keys_build(struct tty *tty) 401 { 402 const struct tty_default_key_raw *tdkr; 403 const struct tty_default_key_code *tdkc; 404 u_int i; 405 const char *s; 406 struct options_entry *o; 407 struct options_array_item *a; 408 union options_value *ov; 409 410 if (tty->key_tree != NULL) 411 tty_keys_free(tty); 412 tty->key_tree = NULL; 413 414 for (i = 0; i < nitems(tty_default_raw_keys); i++) { 415 tdkr = &tty_default_raw_keys[i]; 416 417 s = tdkr->string; 418 if (*s != '\0') 419 tty_keys_add(tty, s, tdkr->key); 420 } 421 for (i = 0; i < nitems(tty_default_code_keys); i++) { 422 tdkc = &tty_default_code_keys[i]; 423 424 s = tty_term_string(tty->term, tdkc->code); 425 if (*s != '\0') 426 tty_keys_add(tty, s, tdkc->key); 427 428 } 429 430 o = options_get(global_options, "user-keys"); 431 if (o != NULL) { 432 a = options_array_first(o); 433 while (a != NULL) { 434 i = options_array_item_index(a); 435 ov = options_array_item_value(a); 436 tty_keys_add(tty, ov->string, KEYC_USER + i); 437 a = options_array_next(a); 438 } 439 } 440 } 441 442 /* Free the entire key tree. */ 443 void 444 tty_keys_free(struct tty *tty) 445 { 446 tty_keys_free1(tty->key_tree); 447 } 448 449 /* Free a single key. */ 450 static void 451 tty_keys_free1(struct tty_key *tk) 452 { 453 if (tk->next != NULL) 454 tty_keys_free1(tk->next); 455 if (tk->left != NULL) 456 tty_keys_free1(tk->left); 457 if (tk->right != NULL) 458 tty_keys_free1(tk->right); 459 free(tk); 460 } 461 462 /* Lookup a key in the tree. */ 463 static struct tty_key * 464 tty_keys_find(struct tty *tty, const char *buf, size_t len, size_t *size) 465 { 466 *size = 0; 467 return (tty_keys_find1(tty->key_tree, buf, len, size)); 468 } 469 470 /* Find the next node. */ 471 static struct tty_key * 472 tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size) 473 { 474 /* If no data, no match. */ 475 if (len == 0) 476 return (NULL); 477 478 /* If the node is NULL, this is the end of the tree. No match. */ 479 if (tk == NULL) 480 return (NULL); 481 482 /* Pick the next in the sequence. */ 483 if (tk->ch == *buf) { 484 /* Move forward in the string. */ 485 buf++; len--; 486 (*size)++; 487 488 /* At the end of the string, return the current node. */ 489 if (len == 0 || (tk->next == NULL && tk->key != KEYC_UNKNOWN)) 490 return (tk); 491 492 /* Move into the next tree for the following character. */ 493 tk = tk->next; 494 } else { 495 if (*buf < tk->ch) 496 tk = tk->left; 497 else if (*buf > tk->ch) 498 tk = tk->right; 499 } 500 501 /* Move to the next in the tree. */ 502 return (tty_keys_find1(tk, buf, len, size)); 503 } 504 505 /* Look up part of the next key. */ 506 static int 507 tty_keys_next1(struct tty *tty, const char *buf, size_t len, key_code *key, 508 size_t *size, int expired) 509 { 510 struct client *c = tty->client; 511 struct tty_key *tk, *tk1; 512 struct utf8_data ud; 513 enum utf8_state more; 514 u_int i; 515 wchar_t wc; 516 int n; 517 518 log_debug("%s: next key is %zu (%.*s) (expired=%d)", c->name, len, 519 (int)len, buf, expired); 520 521 /* Is this a known key? */ 522 tk = tty_keys_find(tty, buf, len, size); 523 if (tk != NULL && tk->key != KEYC_UNKNOWN) { 524 tk1 = tk; 525 do 526 log_debug("%s: keys in list: %#llx", c->name, tk1->key); 527 while ((tk1 = tk1->next) != NULL); 528 if (tk->next != NULL && !expired) 529 return (1); 530 *key = tk->key; 531 return (0); 532 } 533 534 /* Is this an an xterm(1) key? */ 535 n = xterm_keys_find(buf, len, size, key); 536 if (n == 0) 537 return (0); 538 if (n == 1 && !expired) 539 return (1); 540 541 /* Is this valid UTF-8? */ 542 more = utf8_open(&ud, (u_char)*buf); 543 if (more == UTF8_MORE) { 544 *size = ud.size; 545 if (len < ud.size) { 546 if (!expired) 547 return (1); 548 return (-1); 549 } 550 for (i = 1; i < ud.size; i++) 551 more = utf8_append(&ud, (u_char)buf[i]); 552 if (more != UTF8_DONE) 553 return (-1); 554 555 if (utf8_combine(&ud, &wc) != UTF8_DONE) 556 return (-1); 557 *key = wc; 558 559 log_debug("%s: UTF-8 key %.*s %#llx", c->name, (int)ud.size, 560 buf, *key); 561 return (0); 562 } 563 564 return (-1); 565 } 566 567 /* Process at least one key in the buffer. Return 0 if no keys present. */ 568 int 569 tty_keys_next(struct tty *tty) 570 { 571 struct client *c = tty->client; 572 struct timeval tv; 573 const char *buf; 574 size_t len, size; 575 cc_t bspace; 576 int delay, expired = 0, n; 577 key_code key; 578 struct mouse_event m = { 0 }; 579 struct key_event *event; 580 581 gettimeofday(&tv, NULL); 582 583 /* Get key buffer. */ 584 buf = EVBUFFER_DATA(tty->in); 585 len = EVBUFFER_LENGTH(tty->in); 586 if (len == 0) 587 return (0); 588 log_debug("%s: keys are %zu (%.*s)", c->name, len, (int)len, buf); 589 590 /* Is this a clipboard response? */ 591 switch (tty_keys_clipboard(tty, buf, len, &size)) { 592 case 0: /* yes */ 593 key = KEYC_UNKNOWN; 594 goto complete_key; 595 case -1: /* no, or not valid */ 596 break; 597 case 1: /* partial */ 598 goto partial_key; 599 } 600 601 /* Is this a device attributes response? */ 602 switch (tty_keys_device_attributes(tty, buf, len, &size)) { 603 case 0: /* yes */ 604 key = KEYC_UNKNOWN; 605 goto complete_key; 606 case -1: /* no, or not valid */ 607 break; 608 case 1: /* partial */ 609 goto partial_key; 610 } 611 612 /* Is this a device status report response? */ 613 switch (tty_keys_device_status_report(tty, buf, len, &size)) { 614 case 0: /* yes */ 615 key = KEYC_UNKNOWN; 616 goto complete_key; 617 case -1: /* no, or not valid */ 618 break; 619 case 1: /* partial */ 620 goto partial_key; 621 } 622 623 /* Is this a mouse key press? */ 624 switch (tty_keys_mouse(tty, buf, len, &size, &m)) { 625 case 0: /* yes */ 626 key = KEYC_MOUSE; 627 goto complete_key; 628 case -1: /* no, or not valid */ 629 break; 630 case -2: /* yes, but we don't care. */ 631 key = KEYC_MOUSE; 632 goto discard_key; 633 case 1: /* partial */ 634 goto partial_key; 635 } 636 637 first_key: 638 /* Try to lookup complete key. */ 639 n = tty_keys_next1(tty, buf, len, &key, &size, expired); 640 if (n == 0) /* found */ 641 goto complete_key; 642 if (n == 1) 643 goto partial_key; 644 645 /* 646 * If not a complete key, look for key with an escape prefix (meta 647 * modifier). 648 */ 649 if (*buf == '\033' && len > 1) { 650 /* Look for a key without the escape. */ 651 n = tty_keys_next1(tty, buf + 1, len - 1, &key, &size, expired); 652 if (n == 0) { /* found */ 653 if (key & KEYC_XTERM) { 654 /* 655 * We want the escape key as well as the xterm 656 * key, because the xterm sequence implicitly 657 * includes the escape (so if we see 658 * \033\033[1;3D we know it is an Escape 659 * followed by M-Left, not just M-Left). 660 */ 661 key = '\033'; 662 size = 1; 663 goto complete_key; 664 } 665 key |= KEYC_ESCAPE; 666 size++; 667 goto complete_key; 668 } 669 if (n == 1) /* partial */ 670 goto partial_key; 671 } 672 673 /* 674 * At this point, we know the key is not partial (with or without 675 * escape). So pass it through even if the timer has not expired. 676 */ 677 if (*buf == '\033' && len >= 2) { 678 key = (u_char)buf[1] | KEYC_ESCAPE; 679 size = 2; 680 } else { 681 key = (u_char)buf[0]; 682 size = 1; 683 } 684 goto complete_key; 685 686 partial_key: 687 log_debug("%s: partial key %.*s", c->name, (int)len, buf); 688 689 /* If timer is going, check for expiration. */ 690 if (tty->flags & TTY_TIMER) { 691 if (evtimer_initialized(&tty->key_timer) && 692 !evtimer_pending(&tty->key_timer, NULL)) { 693 expired = 1; 694 goto first_key; 695 } 696 return (0); 697 } 698 699 /* Get the time period. */ 700 delay = options_get_number(global_options, "escape-time"); 701 tv.tv_sec = delay / 1000; 702 tv.tv_usec = (delay % 1000) * 1000L; 703 704 /* Start the timer. */ 705 if (event_initialized(&tty->key_timer)) 706 evtimer_del(&tty->key_timer); 707 evtimer_set(&tty->key_timer, tty_keys_callback, tty); 708 evtimer_add(&tty->key_timer, &tv); 709 710 tty->flags |= TTY_TIMER; 711 return (0); 712 713 complete_key: 714 log_debug("%s: complete key %.*s %#llx", c->name, (int)size, buf, key); 715 716 /* 717 * Check for backspace key using termios VERASE - the terminfo 718 * kbs entry is extremely unreliable, so cannot be safely 719 * used. termios should have a better idea. 720 */ 721 bspace = tty->tio.c_cc[VERASE]; 722 if (bspace != _POSIX_VDISABLE && (key & KEYC_MASK_KEY) == bspace) 723 key = (key & KEYC_MASK_MOD) | KEYC_BSPACE; 724 725 /* Remove data from buffer. */ 726 evbuffer_drain(tty->in, size); 727 728 /* Remove key timer. */ 729 if (event_initialized(&tty->key_timer)) 730 evtimer_del(&tty->key_timer); 731 tty->flags &= ~TTY_TIMER; 732 733 /* Check for focus events. */ 734 if (key == KEYC_FOCUS_OUT) { 735 tty->client->flags &= ~CLIENT_FOCUSED; 736 return (1); 737 } else if (key == KEYC_FOCUS_IN) { 738 tty->client->flags |= CLIENT_FOCUSED; 739 return (1); 740 } 741 742 /* Fire the key. */ 743 if (key != KEYC_UNKNOWN) { 744 event = xmalloc(sizeof *event); 745 event->key = key; 746 memcpy(&event->m, &m, sizeof event->m); 747 if (!server_client_handle_key(c, event)) 748 free(event); 749 } 750 751 return (1); 752 753 discard_key: 754 log_debug("%s: discard key %.*s %#llx", c->name, (int)size, buf, key); 755 756 /* Remove data from buffer. */ 757 evbuffer_drain(tty->in, size); 758 759 return (1); 760 } 761 762 /* Key timer callback. */ 763 static void 764 tty_keys_callback(__unused int fd, __unused short events, void *data) 765 { 766 struct tty *tty = data; 767 768 if (tty->flags & TTY_TIMER) { 769 while (tty_keys_next(tty)) 770 ; 771 } 772 } 773 774 /* 775 * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial 776 * (probably a mouse sequence but need more data). 777 */ 778 static int 779 tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size, 780 struct mouse_event *m) 781 { 782 struct client *c = tty->client; 783 u_int i, x, y, b, sgr_b; 784 u_char sgr_type, ch; 785 786 /* 787 * Standard mouse sequences are \033[M followed by three characters 788 * indicating button, X and Y, all based at 32 with 1,1 top-left. 789 * 790 * UTF-8 mouse sequences are similar but the three are expressed as 791 * UTF-8 characters. 792 * 793 * SGR extended mouse sequences are \033[< followed by three numbers in 794 * decimal and separated by semicolons indicating button, X and Y. A 795 * trailing 'M' is click or scroll and trailing 'm' release. All are 796 * based at 0 with 1,1 top-left. 797 */ 798 799 *size = 0; 800 x = y = b = sgr_b = 0; 801 sgr_type = ' '; 802 803 /* First two bytes are always \033[. */ 804 if (buf[0] != '\033') 805 return (-1); 806 if (len == 1) 807 return (1); 808 if (buf[1] != '[') 809 return (-1); 810 if (len == 2) 811 return (1); 812 813 /* 814 * Third byte is M in old standard (and UTF-8 extension which we do not 815 * support), < in SGR extension. 816 */ 817 if (buf[2] == 'M') { 818 /* Read the three inputs. */ 819 *size = 3; 820 for (i = 0; i < 3; i++) { 821 if (len <= *size) 822 return (1); 823 ch = (u_char)buf[(*size)++]; 824 if (i == 0) 825 b = ch; 826 else if (i == 1) 827 x = ch; 828 else 829 y = ch; 830 } 831 log_debug("%s: mouse input: %.*s", c->name, (int)*size, buf); 832 833 /* Check and return the mouse input. */ 834 if (b < 32) 835 return (-1); 836 b -= 32; 837 if (x >= 33) 838 x -= 33; 839 else 840 x = 256 - x; 841 if (y >= 33) 842 y -= 33; 843 else 844 y = 256 - y; 845 } else if (buf[2] == '<') { 846 /* Read the three inputs. */ 847 *size = 3; 848 while (1) { 849 if (len <= *size) 850 return (1); 851 ch = (u_char)buf[(*size)++]; 852 if (ch == ';') 853 break; 854 if (ch < '0' || ch > '9') 855 return (-1); 856 sgr_b = 10 * sgr_b + (ch - '0'); 857 } 858 while (1) { 859 if (len <= *size) 860 return (1); 861 ch = (u_char)buf[(*size)++]; 862 if (ch == ';') 863 break; 864 if (ch < '0' || ch > '9') 865 return (-1); 866 x = 10 * x + (ch - '0'); 867 } 868 while (1) { 869 if (len <= *size) 870 return (1); 871 ch = (u_char)buf[(*size)++]; 872 if (ch == 'M' || ch == 'm') 873 break; 874 if (ch < '0' || ch > '9') 875 return (-1); 876 y = 10 * y + (ch - '0'); 877 } 878 log_debug("%s: mouse input (SGR): %.*s", c->name, (int)*size, 879 buf); 880 881 /* Check and return the mouse input. */ 882 if (x < 1 || y < 1) 883 return (-1); 884 x--; 885 y--; 886 b = sgr_b; 887 888 /* Type is M for press, m for release. */ 889 sgr_type = ch; 890 if (sgr_type == 'm') 891 b |= 3; 892 893 /* 894 * Some terminals (like PuTTY 0.63) mistakenly send 895 * button-release events for scroll-wheel button-press event. 896 * Discard it before it reaches any program running inside 897 * tmux. 898 */ 899 if (sgr_type == 'm' && (sgr_b & 64)) 900 return (-2); 901 } else 902 return (-1); 903 904 /* Fill mouse event. */ 905 m->lx = tty->mouse_last_x; 906 m->x = x; 907 m->ly = tty->mouse_last_y; 908 m->y = y; 909 m->lb = tty->mouse_last_b; 910 m->b = b; 911 m->sgr_type = sgr_type; 912 m->sgr_b = sgr_b; 913 914 /* Update last mouse state. */ 915 tty->mouse_last_x = x; 916 tty->mouse_last_y = y; 917 tty->mouse_last_b = b; 918 919 return (0); 920 } 921 922 /* 923 * Handle OSC 52 clipboard input. Returns 0 for success, -1 for failure, 1 for 924 * partial. 925 */ 926 static int 927 tty_keys_clipboard(__unused struct tty *tty, const char *buf, size_t len, 928 size_t *size) 929 { 930 size_t end, terminator, needed; 931 char *copy, *out; 932 int outlen; 933 934 *size = 0; 935 936 /* First three bytes are always \033]52;. */ 937 if (buf[0] != '\033') 938 return (-1); 939 if (len == 1) 940 return (1); 941 if (buf[1] != ']') 942 return (-1); 943 if (len == 2) 944 return (1); 945 if (buf[2] != '5') 946 return (-1); 947 if (len == 3) 948 return (1); 949 if (buf[3] != '2') 950 return (-1); 951 if (len == 4) 952 return (1); 953 if (buf[4] != ';') 954 return (-1); 955 if (len == 5) 956 return (1); 957 958 /* Find the terminator if any. */ 959 for (end = 5; end < len; end++) { 960 if (buf[end] == '\007') { 961 terminator = 1; 962 break; 963 } 964 if (end > 5 && buf[end - 1] == '\033' && buf[end] == '\\') { 965 terminator = 2; 966 break; 967 } 968 } 969 if (end == len) 970 return (1); 971 *size = end + terminator; 972 973 /* Skip the initial part. */ 974 buf += 5; 975 end -= 5; 976 977 /* Get the second argument. */ 978 while (end != 0 && *buf != ';') { 979 buf++; 980 end--; 981 } 982 if (end == 0 || end == 1) 983 return (0); 984 buf++; 985 end--; 986 987 /* It has to be a string so copy it. */ 988 copy = xmalloc(end + 1); 989 memcpy(copy, buf, end); 990 copy[end] = '\0'; 991 992 /* Convert from base64. */ 993 needed = (end / 4) * 3; 994 out = xmalloc(needed); 995 if ((outlen = b64_pton(copy, out, len)) == -1) { 996 free(out); 997 free(copy); 998 return (0); 999 } 1000 free(copy); 1001 1002 /* Create a new paste buffer. */ 1003 log_debug("%s: %.*s", __func__, outlen, out); 1004 paste_add(NULL, out, outlen); 1005 1006 return (0); 1007 } 1008 1009 /* 1010 * Handle device attributes input. Returns 0 for success, -1 for failure, 1 for 1011 * partial. 1012 */ 1013 static int 1014 tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len, 1015 size_t *size) 1016 { 1017 struct client *c = tty->client; 1018 u_int i, n = 0; 1019 char tmp[64], *endptr, p[32] = { 0 }, *cp, *next; 1020 int flags = 0; 1021 1022 *size = 0; 1023 if (tty->flags & TTY_HAVEDA) 1024 return (-1); 1025 1026 /* First three bytes are always \033[?. */ 1027 if (buf[0] != '\033') 1028 return (-1); 1029 if (len == 1) 1030 return (1); 1031 if (buf[1] != '[') 1032 return (-1); 1033 if (len == 2) 1034 return (1); 1035 if (buf[2] != '?') 1036 return (-1); 1037 if (len == 3) 1038 return (1); 1039 1040 /* Copy the rest up to a 'c'. */ 1041 for (i = 0; i < (sizeof tmp) - 1 && buf[3 + i] != 'c'; i++) { 1042 if (3 + i == len) 1043 return (1); 1044 tmp[i] = buf[3 + i]; 1045 } 1046 if (i == (sizeof tmp) - 1) 1047 return (-1); 1048 tmp[i] = '\0'; 1049 *size = 4 + i; 1050 1051 /* Convert version numbers. */ 1052 cp = tmp; 1053 while ((next = strsep(&cp, ";")) != NULL) { 1054 p[n] = strtoul(next, &endptr, 10); 1055 if (*endptr != '\0') 1056 p[n] = 0; 1057 n++; 1058 } 1059 1060 /* Set terminal flags. */ 1061 switch (p[0]) { 1062 case 64: /* VT420 */ 1063 flags |= (TERM_DECFRA|TERM_DECSLRM); 1064 break; 1065 } 1066 for (i = 1; i < n; i++) 1067 log_debug("%s: DA feature: %d", c->name, p[i]); 1068 log_debug("%s: received DA %.*s", c->name, (int)*size, buf); 1069 1070 tty_set_flags(tty, flags); 1071 tty->flags |= TTY_HAVEDA; 1072 1073 return (0); 1074 } 1075 1076 /* 1077 * Handle device status report input. Returns 0 for success, -1 for failure, 1 1078 * for partial. 1079 */ 1080 static int 1081 tty_keys_device_status_report(struct tty *tty, const char *buf, size_t len, 1082 size_t *size) 1083 { 1084 struct client *c = tty->client; 1085 u_int i; 1086 char tmp[64]; 1087 int flags = 0; 1088 1089 *size = 0; 1090 if (tty->flags & TTY_HAVEDSR) 1091 return (-1); 1092 1093 /* First three bytes are always \033[. */ 1094 if (buf[0] != '\033') 1095 return (-1); 1096 if (len == 1) 1097 return (1); 1098 if (buf[1] != '[') 1099 return (-1); 1100 if (len == 2) 1101 return (1); 1102 if (buf[2] != 'I' && buf[2] != 'T') 1103 return (-1); 1104 if (len == 3) 1105 return (1); 1106 1107 /* Copy the rest up to a 'n'. */ 1108 for (i = 0; i < (sizeof tmp) - 1 && buf[2 + i] != 'n'; i++) { 1109 if (2 + i == len) 1110 return (1); 1111 tmp[i] = buf[2 + i]; 1112 } 1113 if (i == (sizeof tmp) - 1) 1114 return (-1); 1115 tmp[i] = '\0'; 1116 *size = 3 + i; 1117 1118 /* Set terminal flags. */ 1119 if (strncmp(tmp, "ITERM2 ", 7) == 0) 1120 flags |= (TERM_DECSLRM|TERM_256COLOURS|TERM_RGBCOLOURS); 1121 if (strncmp(tmp, "TMUX ", 5) == 0) 1122 flags |= (TERM_256COLOURS|TERM_RGBCOLOURS); 1123 log_debug("%s: received DSR %.*s", c->name, (int)*size, buf); 1124 1125 tty_set_flags(tty, flags); 1126 tty->flags |= TTY_HAVEDSR; 1127 1128 return (0); 1129 } 1130