1 /* $OpenBSD: tty-keys.c,v 1.139 2020/06/02 08:17:27 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 <ctype.h> 25 #include <limits.h> 26 #include <resolv.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <termios.h> 30 #include <unistd.h> 31 32 #include "tmux.h" 33 34 /* 35 * Handle keys input from the outside terminal. tty_default_*_keys[] are a base 36 * table of supported keys which are looked up in terminfo(5) and translated 37 * into a ternary tree. 38 */ 39 40 static void tty_keys_add1(struct tty_key **, const char *, key_code); 41 static void tty_keys_add(struct tty *, const char *, key_code); 42 static void tty_keys_free1(struct tty_key *); 43 static struct tty_key *tty_keys_find1(struct tty_key *, const char *, size_t, 44 size_t *); 45 static struct tty_key *tty_keys_find(struct tty *, const char *, size_t, 46 size_t *); 47 static int tty_keys_next1(struct tty *, const char *, size_t, key_code *, 48 size_t *, int); 49 static void tty_keys_callback(int, short, void *); 50 static int tty_keys_extended_key(struct tty *, const char *, size_t, 51 size_t *, key_code *); 52 static int tty_keys_mouse(struct tty *, const char *, size_t, size_t *, 53 struct mouse_event *); 54 static int tty_keys_clipboard(struct tty *, const char *, size_t, 55 size_t *); 56 static int tty_keys_device_attributes(struct tty *, const char *, size_t, 57 size_t *); 58 static int tty_keys_extended_device_attributes(struct tty *, const char *, 59 size_t, size_t *); 60 61 /* Default raw keys. */ 62 struct tty_default_key_raw { 63 const char *string; 64 key_code key; 65 }; 66 static const struct tty_default_key_raw tty_default_raw_keys[] = { 67 /* Application escape. */ 68 { "\033O[", '\033' }, 69 70 /* 71 * Numeric keypad. Just use the vt100 escape sequences here and always 72 * put the terminal into keypad_xmit mode. Translation of numbers 73 * mode/applications mode is done in input-keys.c. 74 */ 75 { "\033Oo", KEYC_KP_SLASH|KEYC_KEYPAD }, 76 { "\033Oj", KEYC_KP_STAR|KEYC_KEYPAD }, 77 { "\033Om", KEYC_KP_MINUS|KEYC_KEYPAD }, 78 { "\033Ow", KEYC_KP_SEVEN|KEYC_KEYPAD }, 79 { "\033Ox", KEYC_KP_EIGHT|KEYC_KEYPAD }, 80 { "\033Oy", KEYC_KP_NINE|KEYC_KEYPAD }, 81 { "\033Ok", KEYC_KP_PLUS|KEYC_KEYPAD }, 82 { "\033Ot", KEYC_KP_FOUR|KEYC_KEYPAD }, 83 { "\033Ou", KEYC_KP_FIVE|KEYC_KEYPAD }, 84 { "\033Ov", KEYC_KP_SIX|KEYC_KEYPAD }, 85 { "\033Oq", KEYC_KP_ONE|KEYC_KEYPAD }, 86 { "\033Or", KEYC_KP_TWO|KEYC_KEYPAD }, 87 { "\033Os", KEYC_KP_THREE|KEYC_KEYPAD }, 88 { "\033OM", KEYC_KP_ENTER|KEYC_KEYPAD }, 89 { "\033Op", KEYC_KP_ZERO|KEYC_KEYPAD }, 90 { "\033On", KEYC_KP_PERIOD|KEYC_KEYPAD }, 91 92 /* Arrow keys. */ 93 { "\033OA", KEYC_UP|KEYC_CURSOR }, 94 { "\033OB", KEYC_DOWN|KEYC_CURSOR }, 95 { "\033OC", KEYC_RIGHT|KEYC_CURSOR }, 96 { "\033OD", KEYC_LEFT|KEYC_CURSOR }, 97 98 { "\033[A", KEYC_UP|KEYC_CURSOR }, 99 { "\033[B", KEYC_DOWN|KEYC_CURSOR }, 100 { "\033[C", KEYC_RIGHT|KEYC_CURSOR }, 101 { "\033[D", KEYC_LEFT|KEYC_CURSOR }, 102 103 /* Other (xterm) "cursor" keys. */ 104 { "\033OH", KEYC_HOME }, 105 { "\033OF", KEYC_END }, 106 107 { "\033[H", KEYC_HOME }, 108 { "\033[F", KEYC_END }, 109 110 /* rxvt-style arrow + modifier keys. */ 111 { "\033Oa", KEYC_UP|KEYC_CTRL }, 112 { "\033Ob", KEYC_DOWN|KEYC_CTRL }, 113 { "\033Oc", KEYC_RIGHT|KEYC_CTRL }, 114 { "\033Od", KEYC_LEFT|KEYC_CTRL }, 115 116 { "\033[a", KEYC_UP|KEYC_SHIFT }, 117 { "\033[b", KEYC_DOWN|KEYC_SHIFT }, 118 { "\033[c", KEYC_RIGHT|KEYC_SHIFT }, 119 { "\033[d", KEYC_LEFT|KEYC_SHIFT }, 120 121 /* rxvt-style function + modifier keys (C = ^, S = $, C-S = @). */ 122 { "\033[11^", KEYC_F1|KEYC_CTRL }, 123 { "\033[12^", KEYC_F2|KEYC_CTRL }, 124 { "\033[13^", KEYC_F3|KEYC_CTRL }, 125 { "\033[14^", KEYC_F4|KEYC_CTRL }, 126 { "\033[15^", KEYC_F5|KEYC_CTRL }, 127 { "\033[17^", KEYC_F6|KEYC_CTRL }, 128 { "\033[18^", KEYC_F7|KEYC_CTRL }, 129 { "\033[19^", KEYC_F8|KEYC_CTRL }, 130 { "\033[20^", KEYC_F9|KEYC_CTRL }, 131 { "\033[21^", KEYC_F10|KEYC_CTRL }, 132 { "\033[23^", KEYC_F11|KEYC_CTRL }, 133 { "\033[24^", KEYC_F12|KEYC_CTRL }, 134 { "\033[2^", KEYC_IC|KEYC_CTRL }, 135 { "\033[3^", KEYC_DC|KEYC_CTRL }, 136 { "\033[7^", KEYC_HOME|KEYC_CTRL }, 137 { "\033[8^", KEYC_END|KEYC_CTRL }, 138 { "\033[6^", KEYC_NPAGE|KEYC_CTRL }, 139 { "\033[5^", KEYC_PPAGE|KEYC_CTRL }, 140 141 { "\033[11$", KEYC_F1|KEYC_SHIFT }, 142 { "\033[12$", KEYC_F2|KEYC_SHIFT }, 143 { "\033[13$", KEYC_F3|KEYC_SHIFT }, 144 { "\033[14$", KEYC_F4|KEYC_SHIFT }, 145 { "\033[15$", KEYC_F5|KEYC_SHIFT }, 146 { "\033[17$", KEYC_F6|KEYC_SHIFT }, 147 { "\033[18$", KEYC_F7|KEYC_SHIFT }, 148 { "\033[19$", KEYC_F8|KEYC_SHIFT }, 149 { "\033[20$", KEYC_F9|KEYC_SHIFT }, 150 { "\033[21$", KEYC_F10|KEYC_SHIFT }, 151 { "\033[23$", KEYC_F11|KEYC_SHIFT }, 152 { "\033[24$", KEYC_F12|KEYC_SHIFT }, 153 { "\033[2$", KEYC_IC|KEYC_SHIFT }, 154 { "\033[3$", KEYC_DC|KEYC_SHIFT }, 155 { "\033[7$", KEYC_HOME|KEYC_SHIFT }, 156 { "\033[8$", KEYC_END|KEYC_SHIFT }, 157 { "\033[6$", KEYC_NPAGE|KEYC_SHIFT }, 158 { "\033[5$", KEYC_PPAGE|KEYC_SHIFT }, 159 160 { "\033[11@", KEYC_F1|KEYC_CTRL|KEYC_SHIFT }, 161 { "\033[12@", KEYC_F2|KEYC_CTRL|KEYC_SHIFT }, 162 { "\033[13@", KEYC_F3|KEYC_CTRL|KEYC_SHIFT }, 163 { "\033[14@", KEYC_F4|KEYC_CTRL|KEYC_SHIFT }, 164 { "\033[15@", KEYC_F5|KEYC_CTRL|KEYC_SHIFT }, 165 { "\033[17@", KEYC_F6|KEYC_CTRL|KEYC_SHIFT }, 166 { "\033[18@", KEYC_F7|KEYC_CTRL|KEYC_SHIFT }, 167 { "\033[19@", KEYC_F8|KEYC_CTRL|KEYC_SHIFT }, 168 { "\033[20@", KEYC_F9|KEYC_CTRL|KEYC_SHIFT }, 169 { "\033[21@", KEYC_F10|KEYC_CTRL|KEYC_SHIFT }, 170 { "\033[23@", KEYC_F11|KEYC_CTRL|KEYC_SHIFT }, 171 { "\033[24@", KEYC_F12|KEYC_CTRL|KEYC_SHIFT }, 172 { "\033[2@", KEYC_IC|KEYC_CTRL|KEYC_SHIFT }, 173 { "\033[3@", KEYC_DC|KEYC_CTRL|KEYC_SHIFT }, 174 { "\033[7@", KEYC_HOME|KEYC_CTRL|KEYC_SHIFT }, 175 { "\033[8@", KEYC_END|KEYC_CTRL|KEYC_SHIFT }, 176 { "\033[6@", KEYC_NPAGE|KEYC_CTRL|KEYC_SHIFT }, 177 { "\033[5@", KEYC_PPAGE|KEYC_CTRL|KEYC_SHIFT }, 178 179 /* Focus tracking. */ 180 { "\033[I", KEYC_FOCUS_IN }, 181 { "\033[O", KEYC_FOCUS_OUT }, 182 183 /* Paste keys. */ 184 { "\033[200~", KEYC_PASTE_START }, 185 { "\033[201~", KEYC_PASTE_END }, 186 }; 187 188 /* Default xterm keys. */ 189 struct tty_default_key_xterm { 190 const char *template; 191 key_code key; 192 }; 193 static const struct tty_default_key_xterm tty_default_xterm_keys[] = { 194 { "\033[1;_P", KEYC_F1 }, 195 { "\033O1;_P", KEYC_F1 }, 196 { "\033O_P", KEYC_F1 }, 197 { "\033[1;_Q", KEYC_F2 }, 198 { "\033O1;_Q", KEYC_F2 }, 199 { "\033O_Q", KEYC_F2 }, 200 { "\033[1;_R", KEYC_F3 }, 201 { "\033O1;_R", KEYC_F3 }, 202 { "\033O_R", KEYC_F3 }, 203 { "\033[1;_S", KEYC_F4 }, 204 { "\033O1;_S", KEYC_F4 }, 205 { "\033O_S", KEYC_F4 }, 206 { "\033[15;_~", KEYC_F5 }, 207 { "\033[17;_~", KEYC_F6 }, 208 { "\033[18;_~", KEYC_F7 }, 209 { "\033[19;_~", KEYC_F8 }, 210 { "\033[20;_~", KEYC_F9 }, 211 { "\033[21;_~", KEYC_F10 }, 212 { "\033[23;_~", KEYC_F11 }, 213 { "\033[24;_~", KEYC_F12 }, 214 { "\033[1;_A", KEYC_UP }, 215 { "\033[1;_B", KEYC_DOWN }, 216 { "\033[1;_C", KEYC_RIGHT }, 217 { "\033[1;_D", KEYC_LEFT }, 218 { "\033[1;_H", KEYC_HOME }, 219 { "\033[1;_F", KEYC_END }, 220 { "\033[5;_~", KEYC_PPAGE }, 221 { "\033[6;_~", KEYC_NPAGE }, 222 { "\033[2;_~", KEYC_IC }, 223 { "\033[3;_~", KEYC_DC }, 224 }; 225 static const key_code tty_default_xterm_modifiers[] = { 226 0, 227 0, 228 KEYC_SHIFT, 229 KEYC_META|KEYC_IMPLIED_META, 230 KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META, 231 KEYC_CTRL, 232 KEYC_SHIFT|KEYC_CTRL, 233 KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL, 234 KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL 235 }; 236 237 /* 238 * Default terminfo(5) keys. Any keys that have builtin modifiers (that is, 239 * where the key itself contains the modifiers) has the KEYC_XTERM flag set so 240 * a leading escape is not treated as meta (and probably removed). 241 */ 242 struct tty_default_key_code { 243 enum tty_code_code code; 244 key_code key; 245 }; 246 static const struct tty_default_key_code tty_default_code_keys[] = { 247 /* Function keys. */ 248 { TTYC_KF1, KEYC_F1 }, 249 { TTYC_KF2, KEYC_F2 }, 250 { TTYC_KF3, KEYC_F3 }, 251 { TTYC_KF4, KEYC_F4 }, 252 { TTYC_KF5, KEYC_F5 }, 253 { TTYC_KF6, KEYC_F6 }, 254 { TTYC_KF7, KEYC_F7 }, 255 { TTYC_KF8, KEYC_F8 }, 256 { TTYC_KF9, KEYC_F9 }, 257 { TTYC_KF10, KEYC_F10 }, 258 { TTYC_KF11, KEYC_F11 }, 259 { TTYC_KF12, KEYC_F12 }, 260 261 { TTYC_KF13, KEYC_F1|KEYC_SHIFT }, 262 { TTYC_KF14, KEYC_F2|KEYC_SHIFT }, 263 { TTYC_KF15, KEYC_F3|KEYC_SHIFT }, 264 { TTYC_KF16, KEYC_F4|KEYC_SHIFT }, 265 { TTYC_KF17, KEYC_F5|KEYC_SHIFT }, 266 { TTYC_KF18, KEYC_F6|KEYC_SHIFT }, 267 { TTYC_KF19, KEYC_F7|KEYC_SHIFT }, 268 { TTYC_KF20, KEYC_F8|KEYC_SHIFT }, 269 { TTYC_KF21, KEYC_F9|KEYC_SHIFT }, 270 { TTYC_KF22, KEYC_F10|KEYC_SHIFT }, 271 { TTYC_KF23, KEYC_F11|KEYC_SHIFT }, 272 { TTYC_KF24, KEYC_F12|KEYC_SHIFT }, 273 274 { TTYC_KF25, KEYC_F1|KEYC_CTRL }, 275 { TTYC_KF26, KEYC_F2|KEYC_CTRL }, 276 { TTYC_KF27, KEYC_F3|KEYC_CTRL }, 277 { TTYC_KF28, KEYC_F4|KEYC_CTRL }, 278 { TTYC_KF29, KEYC_F5|KEYC_CTRL }, 279 { TTYC_KF30, KEYC_F6|KEYC_CTRL }, 280 { TTYC_KF31, KEYC_F7|KEYC_CTRL }, 281 { TTYC_KF32, KEYC_F8|KEYC_CTRL }, 282 { TTYC_KF33, KEYC_F9|KEYC_CTRL }, 283 { TTYC_KF34, KEYC_F10|KEYC_CTRL }, 284 { TTYC_KF35, KEYC_F11|KEYC_CTRL }, 285 { TTYC_KF36, KEYC_F12|KEYC_CTRL }, 286 287 { TTYC_KF37, KEYC_F1|KEYC_SHIFT|KEYC_CTRL }, 288 { TTYC_KF38, KEYC_F2|KEYC_SHIFT|KEYC_CTRL }, 289 { TTYC_KF39, KEYC_F3|KEYC_SHIFT|KEYC_CTRL }, 290 { TTYC_KF40, KEYC_F4|KEYC_SHIFT|KEYC_CTRL }, 291 { TTYC_KF41, KEYC_F5|KEYC_SHIFT|KEYC_CTRL }, 292 { TTYC_KF42, KEYC_F6|KEYC_SHIFT|KEYC_CTRL }, 293 { TTYC_KF43, KEYC_F7|KEYC_SHIFT|KEYC_CTRL }, 294 { TTYC_KF44, KEYC_F8|KEYC_SHIFT|KEYC_CTRL }, 295 { TTYC_KF45, KEYC_F9|KEYC_SHIFT|KEYC_CTRL }, 296 { TTYC_KF46, KEYC_F10|KEYC_SHIFT|KEYC_CTRL }, 297 { TTYC_KF47, KEYC_F11|KEYC_SHIFT|KEYC_CTRL }, 298 { TTYC_KF48, KEYC_F12|KEYC_SHIFT|KEYC_CTRL }, 299 300 { TTYC_KF49, KEYC_F1|KEYC_META|KEYC_IMPLIED_META }, 301 { TTYC_KF50, KEYC_F2|KEYC_META|KEYC_IMPLIED_META }, 302 { TTYC_KF51, KEYC_F3|KEYC_META|KEYC_IMPLIED_META }, 303 { TTYC_KF52, KEYC_F4|KEYC_META|KEYC_IMPLIED_META }, 304 { TTYC_KF53, KEYC_F5|KEYC_META|KEYC_IMPLIED_META }, 305 { TTYC_KF54, KEYC_F6|KEYC_META|KEYC_IMPLIED_META }, 306 { TTYC_KF55, KEYC_F7|KEYC_META|KEYC_IMPLIED_META }, 307 { TTYC_KF56, KEYC_F8|KEYC_META|KEYC_IMPLIED_META }, 308 { TTYC_KF57, KEYC_F9|KEYC_META|KEYC_IMPLIED_META }, 309 { TTYC_KF58, KEYC_F10|KEYC_META|KEYC_IMPLIED_META }, 310 { TTYC_KF59, KEYC_F11|KEYC_META|KEYC_IMPLIED_META }, 311 { TTYC_KF60, KEYC_F12|KEYC_META|KEYC_IMPLIED_META }, 312 313 { TTYC_KF61, KEYC_F1|KEYC_META|KEYC_IMPLIED_META|KEYC_SHIFT }, 314 { TTYC_KF62, KEYC_F2|KEYC_META|KEYC_IMPLIED_META|KEYC_SHIFT }, 315 { TTYC_KF63, KEYC_F3|KEYC_META|KEYC_IMPLIED_META|KEYC_SHIFT }, 316 317 { TTYC_KICH1, KEYC_IC }, 318 { TTYC_KDCH1, KEYC_DC }, 319 { TTYC_KHOME, KEYC_HOME }, 320 { TTYC_KEND, KEYC_END }, 321 { TTYC_KNP, KEYC_NPAGE }, 322 { TTYC_KPP, KEYC_PPAGE }, 323 { TTYC_KCBT, KEYC_BTAB }, 324 325 /* Arrow keys from terminfo. */ 326 { TTYC_KCUU1, KEYC_UP|KEYC_CURSOR }, 327 { TTYC_KCUD1, KEYC_DOWN|KEYC_CURSOR }, 328 { TTYC_KCUB1, KEYC_LEFT|KEYC_CURSOR }, 329 { TTYC_KCUF1, KEYC_RIGHT|KEYC_CURSOR }, 330 331 /* Key and modifier capabilities. */ 332 { TTYC_KDC2, KEYC_DC|KEYC_SHIFT }, 333 { TTYC_KDC3, KEYC_DC|KEYC_META|KEYC_IMPLIED_META }, 334 { TTYC_KDC4, KEYC_DC|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 335 { TTYC_KDC5, KEYC_DC|KEYC_CTRL }, 336 { TTYC_KDC6, KEYC_DC|KEYC_SHIFT|KEYC_CTRL }, 337 { TTYC_KDC7, KEYC_DC|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 338 { TTYC_KIND, KEYC_DOWN|KEYC_SHIFT }, 339 { TTYC_KDN2, KEYC_DOWN|KEYC_SHIFT }, 340 { TTYC_KDN3, KEYC_DOWN|KEYC_META|KEYC_IMPLIED_META }, 341 { TTYC_KDN4, KEYC_DOWN|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 342 { TTYC_KDN5, KEYC_DOWN|KEYC_CTRL }, 343 { TTYC_KDN6, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL }, 344 { TTYC_KDN7, KEYC_DOWN|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 345 { TTYC_KEND2, KEYC_END|KEYC_SHIFT }, 346 { TTYC_KEND3, KEYC_END|KEYC_META|KEYC_IMPLIED_META }, 347 { TTYC_KEND4, KEYC_END|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 348 { TTYC_KEND5, KEYC_END|KEYC_CTRL }, 349 { TTYC_KEND6, KEYC_END|KEYC_SHIFT|KEYC_CTRL }, 350 { TTYC_KEND7, KEYC_END|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 351 { TTYC_KHOM2, KEYC_HOME|KEYC_SHIFT }, 352 { TTYC_KHOM3, KEYC_HOME|KEYC_META|KEYC_IMPLIED_META }, 353 { TTYC_KHOM4, KEYC_HOME|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 354 { TTYC_KHOM5, KEYC_HOME|KEYC_CTRL }, 355 { TTYC_KHOM6, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL }, 356 { TTYC_KHOM7, KEYC_HOME|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 357 { TTYC_KIC2, KEYC_IC|KEYC_SHIFT }, 358 { TTYC_KIC3, KEYC_IC|KEYC_META|KEYC_IMPLIED_META }, 359 { TTYC_KIC4, KEYC_IC|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 360 { TTYC_KIC5, KEYC_IC|KEYC_CTRL }, 361 { TTYC_KIC6, KEYC_IC|KEYC_SHIFT|KEYC_CTRL }, 362 { TTYC_KIC7, KEYC_IC|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 363 { TTYC_KLFT2, KEYC_LEFT|KEYC_SHIFT }, 364 { TTYC_KLFT3, KEYC_LEFT|KEYC_META|KEYC_IMPLIED_META }, 365 { TTYC_KLFT4, KEYC_LEFT|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 366 { TTYC_KLFT5, KEYC_LEFT|KEYC_CTRL }, 367 { TTYC_KLFT6, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL }, 368 { TTYC_KLFT7, KEYC_LEFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 369 { TTYC_KNXT2, KEYC_NPAGE|KEYC_SHIFT }, 370 { TTYC_KNXT3, KEYC_NPAGE|KEYC_META|KEYC_IMPLIED_META }, 371 { TTYC_KNXT4, KEYC_NPAGE|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 372 { TTYC_KNXT5, KEYC_NPAGE|KEYC_CTRL }, 373 { TTYC_KNXT6, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL }, 374 { TTYC_KNXT7, KEYC_NPAGE|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 375 { TTYC_KPRV2, KEYC_PPAGE|KEYC_SHIFT }, 376 { TTYC_KPRV3, KEYC_PPAGE|KEYC_META|KEYC_IMPLIED_META }, 377 { TTYC_KPRV4, KEYC_PPAGE|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 378 { TTYC_KPRV5, KEYC_PPAGE|KEYC_CTRL }, 379 { TTYC_KPRV6, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL }, 380 { TTYC_KPRV7, KEYC_PPAGE|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 381 { TTYC_KRIT2, KEYC_RIGHT|KEYC_SHIFT }, 382 { TTYC_KRIT3, KEYC_RIGHT|KEYC_META|KEYC_IMPLIED_META }, 383 { TTYC_KRIT4, KEYC_RIGHT|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 384 { TTYC_KRIT5, KEYC_RIGHT|KEYC_CTRL }, 385 { TTYC_KRIT6, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL }, 386 { TTYC_KRIT7, KEYC_RIGHT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 387 { TTYC_KRI, KEYC_UP|KEYC_SHIFT }, 388 { TTYC_KUP2, KEYC_UP|KEYC_SHIFT }, 389 { TTYC_KUP3, KEYC_UP|KEYC_META|KEYC_IMPLIED_META }, 390 { TTYC_KUP4, KEYC_UP|KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META }, 391 { TTYC_KUP5, KEYC_UP|KEYC_CTRL }, 392 { TTYC_KUP6, KEYC_UP|KEYC_SHIFT|KEYC_CTRL }, 393 { TTYC_KUP7, KEYC_UP|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL }, 394 }; 395 396 /* Add key to tree. */ 397 static void 398 tty_keys_add(struct tty *tty, const char *s, key_code key) 399 { 400 struct tty_key *tk; 401 size_t size; 402 const char *keystr; 403 404 keystr = key_string_lookup_key(key, 1); 405 if ((tk = tty_keys_find(tty, s, strlen(s), &size)) == NULL) { 406 log_debug("new key %s: 0x%llx (%s)", s, key, keystr); 407 tty_keys_add1(&tty->key_tree, s, key); 408 } else { 409 log_debug("replacing key %s: 0x%llx (%s)", s, key, keystr); 410 tk->key = key; 411 } 412 } 413 414 /* Add next node to the tree. */ 415 static void 416 tty_keys_add1(struct tty_key **tkp, const char *s, key_code key) 417 { 418 struct tty_key *tk; 419 420 /* Allocate a tree entry if there isn't one already. */ 421 tk = *tkp; 422 if (tk == NULL) { 423 tk = *tkp = xcalloc(1, sizeof *tk); 424 tk->ch = *s; 425 tk->key = KEYC_UNKNOWN; 426 } 427 428 /* Find the next entry. */ 429 if (*s == tk->ch) { 430 /* Move forward in string. */ 431 s++; 432 433 /* If this is the end of the string, no more is necessary. */ 434 if (*s == '\0') { 435 tk->key = key; 436 return; 437 } 438 439 /* Use the child tree for the next character. */ 440 tkp = &tk->next; 441 } else { 442 if (*s < tk->ch) 443 tkp = &tk->left; 444 else if (*s > tk->ch) 445 tkp = &tk->right; 446 } 447 448 /* And recurse to add it. */ 449 tty_keys_add1(tkp, s, key); 450 } 451 452 /* Initialise a key tree from the table. */ 453 void 454 tty_keys_build(struct tty *tty) 455 { 456 const struct tty_default_key_raw *tdkr; 457 const struct tty_default_key_xterm *tdkx; 458 const struct tty_default_key_code *tdkc; 459 u_int i, j; 460 const char *s; 461 struct options_entry *o; 462 struct options_array_item *a; 463 union options_value *ov; 464 char copy[16]; 465 key_code key; 466 467 if (tty->key_tree != NULL) 468 tty_keys_free(tty); 469 tty->key_tree = NULL; 470 471 for (i = 0; i < nitems(tty_default_xterm_keys); i++) { 472 tdkx = &tty_default_xterm_keys[i]; 473 for (j = 2; j < nitems(tty_default_xterm_modifiers); j++) { 474 strlcpy(copy, tdkx->template, sizeof copy); 475 copy[strcspn(copy, "_")] = '0' + j; 476 477 key = tdkx->key|tty_default_xterm_modifiers[j]; 478 tty_keys_add(tty, copy, key); 479 } 480 } 481 for (i = 0; i < nitems(tty_default_raw_keys); i++) { 482 tdkr = &tty_default_raw_keys[i]; 483 484 s = tdkr->string; 485 if (*s != '\0') 486 tty_keys_add(tty, s, tdkr->key); 487 } 488 for (i = 0; i < nitems(tty_default_code_keys); i++) { 489 tdkc = &tty_default_code_keys[i]; 490 491 s = tty_term_string(tty->term, tdkc->code); 492 if (*s != '\0') 493 tty_keys_add(tty, s, tdkc->key); 494 495 } 496 497 o = options_get(global_options, "user-keys"); 498 if (o != NULL) { 499 a = options_array_first(o); 500 while (a != NULL) { 501 i = options_array_item_index(a); 502 ov = options_array_item_value(a); 503 tty_keys_add(tty, ov->string, KEYC_USER + i); 504 a = options_array_next(a); 505 } 506 } 507 } 508 509 /* Free the entire key tree. */ 510 void 511 tty_keys_free(struct tty *tty) 512 { 513 tty_keys_free1(tty->key_tree); 514 } 515 516 /* Free a single key. */ 517 static void 518 tty_keys_free1(struct tty_key *tk) 519 { 520 if (tk->next != NULL) 521 tty_keys_free1(tk->next); 522 if (tk->left != NULL) 523 tty_keys_free1(tk->left); 524 if (tk->right != NULL) 525 tty_keys_free1(tk->right); 526 free(tk); 527 } 528 529 /* Lookup a key in the tree. */ 530 static struct tty_key * 531 tty_keys_find(struct tty *tty, const char *buf, size_t len, size_t *size) 532 { 533 *size = 0; 534 return (tty_keys_find1(tty->key_tree, buf, len, size)); 535 } 536 537 /* Find the next node. */ 538 static struct tty_key * 539 tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size) 540 { 541 /* If no data, no match. */ 542 if (len == 0) 543 return (NULL); 544 545 /* If the node is NULL, this is the end of the tree. No match. */ 546 if (tk == NULL) 547 return (NULL); 548 549 /* Pick the next in the sequence. */ 550 if (tk->ch == *buf) { 551 /* Move forward in the string. */ 552 buf++; len--; 553 (*size)++; 554 555 /* At the end of the string, return the current node. */ 556 if (len == 0 || (tk->next == NULL && tk->key != KEYC_UNKNOWN)) 557 return (tk); 558 559 /* Move into the next tree for the following character. */ 560 tk = tk->next; 561 } else { 562 if (*buf < tk->ch) 563 tk = tk->left; 564 else if (*buf > tk->ch) 565 tk = tk->right; 566 } 567 568 /* Move to the next in the tree. */ 569 return (tty_keys_find1(tk, buf, len, size)); 570 } 571 572 /* Look up part of the next key. */ 573 static int 574 tty_keys_next1(struct tty *tty, const char *buf, size_t len, key_code *key, 575 size_t *size, int expired) 576 { 577 struct client *c = tty->client; 578 struct tty_key *tk, *tk1; 579 struct utf8_data ud; 580 enum utf8_state more; 581 utf8_char uc; 582 u_int i; 583 584 log_debug("%s: next key is %zu (%.*s) (expired=%d)", c->name, len, 585 (int)len, buf, expired); 586 587 /* Is this a known key? */ 588 tk = tty_keys_find(tty, buf, len, size); 589 if (tk != NULL && tk->key != KEYC_UNKNOWN) { 590 tk1 = tk; 591 do 592 log_debug("%s: keys in list: %#llx", c->name, tk1->key); 593 while ((tk1 = tk1->next) != NULL); 594 if (tk->next != NULL && !expired) 595 return (1); 596 *key = tk->key; 597 return (0); 598 } 599 600 /* Is this valid UTF-8? */ 601 more = utf8_open(&ud, (u_char)*buf); 602 if (more == UTF8_MORE) { 603 *size = ud.size; 604 if (len < ud.size) { 605 if (!expired) 606 return (1); 607 return (-1); 608 } 609 for (i = 1; i < ud.size; i++) 610 more = utf8_append(&ud, (u_char)buf[i]); 611 if (more != UTF8_DONE) 612 return (-1); 613 614 if (utf8_from_data(&ud, &uc) != UTF8_DONE) 615 return (-1); 616 *key = uc; 617 618 log_debug("%s: UTF-8 key %.*s %#llx", c->name, (int)ud.size, 619 ud.data, *key); 620 return (0); 621 } 622 623 return (-1); 624 } 625 626 /* Process at least one key in the buffer. Return 0 if no keys present. */ 627 int 628 tty_keys_next(struct tty *tty) 629 { 630 struct client *c = tty->client; 631 struct timeval tv; 632 const char *buf; 633 size_t len, size; 634 cc_t bspace; 635 int delay, expired = 0, n; 636 key_code key; 637 struct mouse_event m = { 0 }; 638 struct key_event *event; 639 640 /* Get key buffer. */ 641 buf = EVBUFFER_DATA(tty->in); 642 len = EVBUFFER_LENGTH(tty->in); 643 if (len == 0) 644 return (0); 645 log_debug("%s: keys are %zu (%.*s)", c->name, len, (int)len, buf); 646 647 /* Is this a clipboard response? */ 648 switch (tty_keys_clipboard(tty, buf, len, &size)) { 649 case 0: /* yes */ 650 key = KEYC_UNKNOWN; 651 goto complete_key; 652 case -1: /* no, or not valid */ 653 break; 654 case 1: /* partial */ 655 goto partial_key; 656 } 657 658 /* Is this a device attributes response? */ 659 switch (tty_keys_device_attributes(tty, buf, len, &size)) { 660 case 0: /* yes */ 661 key = KEYC_UNKNOWN; 662 goto complete_key; 663 case -1: /* no, or not valid */ 664 break; 665 case 1: /* partial */ 666 goto partial_key; 667 } 668 669 /* Is this an extended device attributes response? */ 670 switch (tty_keys_extended_device_attributes(tty, buf, len, &size)) { 671 case 0: /* yes */ 672 key = KEYC_UNKNOWN; 673 goto complete_key; 674 case -1: /* no, or not valid */ 675 break; 676 case 1: /* partial */ 677 goto partial_key; 678 } 679 680 /* Is this a mouse key press? */ 681 switch (tty_keys_mouse(tty, buf, len, &size, &m)) { 682 case 0: /* yes */ 683 key = KEYC_MOUSE; 684 goto complete_key; 685 case -1: /* no, or not valid */ 686 break; 687 case -2: /* yes, but we don't care. */ 688 key = KEYC_MOUSE; 689 goto discard_key; 690 case 1: /* partial */ 691 goto partial_key; 692 } 693 694 /* Is this an extended key press? */ 695 switch (tty_keys_extended_key(tty, buf, len, &size, &key)) { 696 case 0: /* yes */ 697 goto complete_key; 698 case -1: /* no, or not valid */ 699 break; 700 case 1: /* partial */ 701 goto partial_key; 702 } 703 704 first_key: 705 /* Try to lookup complete key. */ 706 n = tty_keys_next1(tty, buf, len, &key, &size, expired); 707 if (n == 0) /* found */ 708 goto complete_key; 709 if (n == 1) 710 goto partial_key; 711 712 /* 713 * If not a complete key, look for key with an escape prefix (meta 714 * modifier). 715 */ 716 if (*buf == '\033' && len > 1) { 717 /* Look for a key without the escape. */ 718 n = tty_keys_next1(tty, buf + 1, len - 1, &key, &size, expired); 719 if (n == 0) { /* found */ 720 if (key & KEYC_IMPLIED_META) { 721 /* 722 * We want the escape key as well as the xterm 723 * key, because the xterm sequence implicitly 724 * includes the escape (so if we see 725 * \033\033[1;3D we know it is an Escape 726 * followed by M-Left, not just M-Left). 727 */ 728 key = '\033'; 729 size = 1; 730 goto complete_key; 731 } 732 key |= KEYC_META; 733 size++; 734 goto complete_key; 735 } 736 if (n == 1) /* partial */ 737 goto partial_key; 738 } 739 740 /* 741 * At this point, we know the key is not partial (with or without 742 * escape). So pass it through even if the timer has not expired. 743 */ 744 if (*buf == '\033' && len >= 2) { 745 key = (u_char)buf[1] | KEYC_META; 746 size = 2; 747 } else { 748 key = (u_char)buf[0]; 749 size = 1; 750 } 751 goto complete_key; 752 753 partial_key: 754 log_debug("%s: partial key %.*s", c->name, (int)len, buf); 755 756 /* If timer is going, check for expiration. */ 757 if (tty->flags & TTY_TIMER) { 758 if (evtimer_initialized(&tty->key_timer) && 759 !evtimer_pending(&tty->key_timer, NULL)) { 760 expired = 1; 761 goto first_key; 762 } 763 return (0); 764 } 765 766 /* Get the time period. */ 767 delay = options_get_number(global_options, "escape-time"); 768 tv.tv_sec = delay / 1000; 769 tv.tv_usec = (delay % 1000) * 1000L; 770 771 /* Start the timer. */ 772 if (event_initialized(&tty->key_timer)) 773 evtimer_del(&tty->key_timer); 774 evtimer_set(&tty->key_timer, tty_keys_callback, tty); 775 evtimer_add(&tty->key_timer, &tv); 776 777 tty->flags |= TTY_TIMER; 778 return (0); 779 780 complete_key: 781 log_debug("%s: complete key %.*s %#llx", c->name, (int)size, buf, key); 782 783 /* 784 * Check for backspace key using termios VERASE - the terminfo 785 * kbs entry is extremely unreliable, so cannot be safely 786 * used. termios should have a better idea. 787 */ 788 bspace = tty->tio.c_cc[VERASE]; 789 if (bspace != _POSIX_VDISABLE && (key & KEYC_MASK_KEY) == bspace) 790 key = (key & KEYC_MASK_MODIFIERS)|KEYC_BSPACE; 791 792 /* Remove data from buffer. */ 793 evbuffer_drain(tty->in, size); 794 795 /* Remove key timer. */ 796 if (event_initialized(&tty->key_timer)) 797 evtimer_del(&tty->key_timer); 798 tty->flags &= ~TTY_TIMER; 799 800 /* Check for focus events. */ 801 if (key == KEYC_FOCUS_OUT) 802 tty->client->flags &= ~CLIENT_FOCUSED; 803 else if (key == KEYC_FOCUS_IN) 804 tty->client->flags |= CLIENT_FOCUSED; 805 806 /* Fire the key. */ 807 if (key != KEYC_UNKNOWN) { 808 event = xmalloc(sizeof *event); 809 event->key = key; 810 memcpy(&event->m, &m, sizeof event->m); 811 if (!server_client_handle_key(c, event)) 812 free(event); 813 } 814 815 return (1); 816 817 discard_key: 818 log_debug("%s: discard key %.*s %#llx", c->name, (int)size, buf, key); 819 820 /* Remove data from buffer. */ 821 evbuffer_drain(tty->in, size); 822 823 return (1); 824 } 825 826 /* Key timer callback. */ 827 static void 828 tty_keys_callback(__unused int fd, __unused short events, void *data) 829 { 830 struct tty *tty = data; 831 832 if (tty->flags & TTY_TIMER) { 833 while (tty_keys_next(tty)) 834 ; 835 } 836 } 837 838 /* 839 * Handle extended key input. This has two forms: \033[27;m;k~ and \033[k;mu, 840 * where k is key as a number and m is a modifier. Returns 0 for success, -1 841 * for failure, 1 for partial; 842 */ 843 static int 844 tty_keys_extended_key(struct tty *tty, const char *buf, size_t len, 845 size_t *size, key_code *key) 846 { 847 struct client *c = tty->client; 848 size_t end; 849 u_int number, modifiers; 850 char tmp[64]; 851 852 *size = 0; 853 854 /* First two bytes are always \033[. */ 855 if (buf[0] != '\033') 856 return (-1); 857 if (len == 1) 858 return (1); 859 if (buf[1] != '[') 860 return (-1); 861 if (len == 2) 862 return (1); 863 864 /* 865 * Look for a terminator. Stop at either '~' or anything that isn't a 866 * number or ';'. 867 */ 868 for (end = 2; end < len && end != sizeof tmp; end++) { 869 if (buf[end] == '~') 870 break; 871 if (!isdigit((u_char)buf[end]) && buf[end] != ';') 872 break; 873 } 874 if (end == len) 875 return (1); 876 if (end == sizeof tmp || (buf[end] != '~' && buf[end] != 'u')) 877 return (-1); 878 879 /* Copy to the buffer. */ 880 memcpy(tmp, buf + 2, end); 881 tmp[end] = '\0'; 882 883 /* Try to parse either form of key. */ 884 if (buf[end] == '~') { 885 if (sscanf(tmp, "27;%u;%u", &modifiers, &number) != 2) 886 return (-1); 887 } else { 888 if (sscanf(tmp ,"%u;%u", &number, &modifiers) != 2) 889 return (-1); 890 } 891 *size = end + 1; 892 893 /* Store the key and modifiers. */ 894 *key = number; 895 switch (modifiers) { 896 case 2: 897 (*key) |= KEYC_SHIFT; 898 break; 899 case 3: 900 (*key) |= (KEYC_META|KEYC_IMPLIED_META); 901 break; 902 case 4: 903 (*key) |= (KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META); 904 break; 905 case 5: 906 (*key) |= KEYC_CTRL; 907 break; 908 case 6: 909 (*key) |= (KEYC_SHIFT|KEYC_CTRL); 910 break; 911 case 7: 912 (*key) |= (KEYC_META|KEYC_CTRL); 913 break; 914 case 8: 915 (*key) |= (KEYC_SHIFT|KEYC_META|KEYC_IMPLIED_META|KEYC_CTRL); 916 break; 917 default: 918 *key = KEYC_NONE; 919 break; 920 } 921 if (log_get_level() != 0) { 922 log_debug("%s: extended key %.*s is %llx (%s)", c->name, 923 (int)*size, buf, *key, key_string_lookup_key(*key, 1)); 924 } 925 return (0); 926 } 927 928 /* 929 * Handle mouse key input. Returns 0 for success, -1 for failure, 1 for partial 930 * (probably a mouse sequence but need more data). 931 */ 932 static int 933 tty_keys_mouse(struct tty *tty, const char *buf, size_t len, size_t *size, 934 struct mouse_event *m) 935 { 936 struct client *c = tty->client; 937 u_int i, x, y, b, sgr_b; 938 u_char sgr_type, ch; 939 940 /* 941 * Standard mouse sequences are \033[M followed by three characters 942 * indicating button, X and Y, all based at 32 with 1,1 top-left. 943 * 944 * UTF-8 mouse sequences are similar but the three are expressed as 945 * UTF-8 characters. 946 * 947 * SGR extended mouse sequences are \033[< followed by three numbers in 948 * decimal and separated by semicolons indicating button, X and Y. A 949 * trailing 'M' is click or scroll and trailing 'm' release. All are 950 * based at 0 with 1,1 top-left. 951 */ 952 953 *size = 0; 954 x = y = b = sgr_b = 0; 955 sgr_type = ' '; 956 957 /* First two bytes are always \033[. */ 958 if (buf[0] != '\033') 959 return (-1); 960 if (len == 1) 961 return (1); 962 if (buf[1] != '[') 963 return (-1); 964 if (len == 2) 965 return (1); 966 967 /* 968 * Third byte is M in old standard (and UTF-8 extension which we do not 969 * support), < in SGR extension. 970 */ 971 if (buf[2] == 'M') { 972 /* Read the three inputs. */ 973 *size = 3; 974 for (i = 0; i < 3; i++) { 975 if (len <= *size) 976 return (1); 977 ch = (u_char)buf[(*size)++]; 978 if (i == 0) 979 b = ch; 980 else if (i == 1) 981 x = ch; 982 else 983 y = ch; 984 } 985 log_debug("%s: mouse input: %.*s", c->name, (int)*size, buf); 986 987 /* Check and return the mouse input. */ 988 if (b < 32) 989 return (-1); 990 b -= 32; 991 if (x >= 33) 992 x -= 33; 993 else 994 x = 256 - x; 995 if (y >= 33) 996 y -= 33; 997 else 998 y = 256 - y; 999 } else if (buf[2] == '<') { 1000 /* Read the three inputs. */ 1001 *size = 3; 1002 while (1) { 1003 if (len <= *size) 1004 return (1); 1005 ch = (u_char)buf[(*size)++]; 1006 if (ch == ';') 1007 break; 1008 if (ch < '0' || ch > '9') 1009 return (-1); 1010 sgr_b = 10 * sgr_b + (ch - '0'); 1011 } 1012 while (1) { 1013 if (len <= *size) 1014 return (1); 1015 ch = (u_char)buf[(*size)++]; 1016 if (ch == ';') 1017 break; 1018 if (ch < '0' || ch > '9') 1019 return (-1); 1020 x = 10 * x + (ch - '0'); 1021 } 1022 while (1) { 1023 if (len <= *size) 1024 return (1); 1025 ch = (u_char)buf[(*size)++]; 1026 if (ch == 'M' || ch == 'm') 1027 break; 1028 if (ch < '0' || ch > '9') 1029 return (-1); 1030 y = 10 * y + (ch - '0'); 1031 } 1032 log_debug("%s: mouse input (SGR): %.*s", c->name, (int)*size, 1033 buf); 1034 1035 /* Check and return the mouse input. */ 1036 if (x < 1 || y < 1) 1037 return (-1); 1038 x--; 1039 y--; 1040 b = sgr_b; 1041 1042 /* Type is M for press, m for release. */ 1043 sgr_type = ch; 1044 if (sgr_type == 'm') 1045 b |= 3; 1046 1047 /* 1048 * Some terminals (like PuTTY 0.63) mistakenly send 1049 * button-release events for scroll-wheel button-press event. 1050 * Discard it before it reaches any program running inside 1051 * tmux. 1052 */ 1053 if (sgr_type == 'm' && (sgr_b & 64)) 1054 return (-2); 1055 } else 1056 return (-1); 1057 1058 /* Fill mouse event. */ 1059 m->lx = tty->mouse_last_x; 1060 m->x = x; 1061 m->ly = tty->mouse_last_y; 1062 m->y = y; 1063 m->lb = tty->mouse_last_b; 1064 m->b = b; 1065 m->sgr_type = sgr_type; 1066 m->sgr_b = sgr_b; 1067 1068 /* Update last mouse state. */ 1069 tty->mouse_last_x = x; 1070 tty->mouse_last_y = y; 1071 tty->mouse_last_b = b; 1072 1073 return (0); 1074 } 1075 1076 /* 1077 * Handle OSC 52 clipboard input. Returns 0 for success, -1 for failure, 1 for 1078 * partial. 1079 */ 1080 static int 1081 tty_keys_clipboard(__unused struct tty *tty, const char *buf, size_t len, 1082 size_t *size) 1083 { 1084 size_t end, terminator, needed; 1085 char *copy, *out; 1086 int outlen; 1087 1088 *size = 0; 1089 1090 /* First five bytes are always \033]52;. */ 1091 if (buf[0] != '\033') 1092 return (-1); 1093 if (len == 1) 1094 return (1); 1095 if (buf[1] != ']') 1096 return (-1); 1097 if (len == 2) 1098 return (1); 1099 if (buf[2] != '5') 1100 return (-1); 1101 if (len == 3) 1102 return (1); 1103 if (buf[3] != '2') 1104 return (-1); 1105 if (len == 4) 1106 return (1); 1107 if (buf[4] != ';') 1108 return (-1); 1109 if (len == 5) 1110 return (1); 1111 1112 /* Find the terminator if any. */ 1113 for (end = 5; end < len; end++) { 1114 if (buf[end] == '\007') { 1115 terminator = 1; 1116 break; 1117 } 1118 if (end > 5 && buf[end - 1] == '\033' && buf[end] == '\\') { 1119 terminator = 2; 1120 break; 1121 } 1122 } 1123 if (end == len) 1124 return (1); 1125 *size = end + terminator; 1126 1127 /* Skip the initial part. */ 1128 buf += 5; 1129 end -= 5; 1130 1131 /* Get the second argument. */ 1132 while (end != 0 && *buf != ';') { 1133 buf++; 1134 end--; 1135 } 1136 if (end == 0 || end == 1) 1137 return (0); 1138 buf++; 1139 end--; 1140 1141 /* It has to be a string so copy it. */ 1142 copy = xmalloc(end + 1); 1143 memcpy(copy, buf, end); 1144 copy[end] = '\0'; 1145 1146 /* Convert from base64. */ 1147 needed = (end / 4) * 3; 1148 out = xmalloc(needed); 1149 if ((outlen = b64_pton(copy, out, len)) == -1) { 1150 free(out); 1151 free(copy); 1152 return (0); 1153 } 1154 free(copy); 1155 1156 /* Create a new paste buffer. */ 1157 log_debug("%s: %.*s", __func__, outlen, out); 1158 paste_add(NULL, out, outlen); 1159 1160 return (0); 1161 } 1162 1163 /* 1164 * Handle secondary device attributes input. Returns 0 for success, -1 for 1165 * failure, 1 for partial. 1166 */ 1167 static int 1168 tty_keys_device_attributes(struct tty *tty, const char *buf, size_t len, 1169 size_t *size) 1170 { 1171 struct client *c = tty->client; 1172 u_int i, n = 0; 1173 char tmp[64], *endptr, p[32] = { 0 }, *cp, *next; 1174 1175 *size = 0; 1176 if (tty->flags & TTY_HAVEDA) 1177 return (-1); 1178 1179 /* First three bytes are always \033[?. */ 1180 if (buf[0] != '\033') 1181 return (-1); 1182 if (len == 1) 1183 return (1); 1184 if (buf[1] != '[') 1185 return (-1); 1186 if (len == 2) 1187 return (1); 1188 if (buf[2] != '>') 1189 return (-1); 1190 if (len == 3) 1191 return (1); 1192 1193 /* Copy the rest up to a 'c'. */ 1194 for (i = 0; i < (sizeof tmp) - 1; i++) { 1195 if (3 + i == len) 1196 return (1); 1197 if (buf[3 + i] == 'c') 1198 break; 1199 tmp[i] = buf[3 + i]; 1200 } 1201 if (i == (sizeof tmp) - 1) 1202 return (-1); 1203 tmp[i] = '\0'; 1204 *size = 4 + i; 1205 1206 /* Convert all arguments to numbers. */ 1207 cp = tmp; 1208 while ((next = strsep(&cp, ";")) != NULL) { 1209 p[n] = strtoul(next, &endptr, 10); 1210 if (*endptr != '\0') 1211 p[n] = 0; 1212 n++; 1213 } 1214 1215 /* Add terminal features. */ 1216 switch (p[0]) { 1217 case 41: /* VT420 */ 1218 tty_add_features(&c->term_features, "margins,rectfill", ","); 1219 break; 1220 case 'M': /* mintty */ 1221 tty_default_features(&c->term_features, "mintty", 0); 1222 break; 1223 case 'T': /* tmux */ 1224 tty_default_features(&c->term_features, "tmux", 0); 1225 break; 1226 case 'U': /* rxvt-unicode */ 1227 tty_default_features(&c->term_features, "rxvt-unicode", 0); 1228 break; 1229 } 1230 log_debug("%s: received secondary DA %.*s", c->name, (int)*size, buf); 1231 1232 tty_update_features(tty); 1233 tty->flags |= TTY_HAVEDA; 1234 1235 return (0); 1236 } 1237 1238 /* 1239 * Handle extended device attributes input. Returns 0 for success, -1 for 1240 * failure, 1 for partial. 1241 */ 1242 static int 1243 tty_keys_extended_device_attributes(struct tty *tty, const char *buf, 1244 size_t len, size_t *size) 1245 { 1246 struct client *c = tty->client; 1247 u_int i; 1248 char tmp[128]; 1249 1250 *size = 0; 1251 if (tty->flags & TTY_HAVEXDA) 1252 return (-1); 1253 1254 /* First four bytes are always \033P>|. */ 1255 if (buf[0] != '\033') 1256 return (-1); 1257 if (len == 1) 1258 return (1); 1259 if (buf[1] != 'P') 1260 return (-1); 1261 if (len == 2) 1262 return (1); 1263 if (buf[2] != '>') 1264 return (-1); 1265 if (len == 3) 1266 return (1); 1267 if (buf[3] != '|') 1268 return (-1); 1269 if (len == 4) 1270 return (1); 1271 1272 /* Copy the rest up to a '\033\\'. */ 1273 for (i = 0; i < (sizeof tmp) - 1; i++) { 1274 if (4 + i == len) 1275 return (1); 1276 if (buf[4 + i - 1] == '\033' && buf[4 + i] == '\\') 1277 break; 1278 tmp[i] = buf[4 + i]; 1279 } 1280 if (i == (sizeof tmp) - 1) 1281 return (-1); 1282 tmp[i - 1] = '\0'; 1283 *size = 5 + i; 1284 1285 /* Add terminal features. */ 1286 if (strncmp(tmp, "iTerm2 ", 7) == 0) 1287 tty_default_features(&c->term_features, "iTerm2", 0); 1288 else if (strncmp(tmp, "tmux ", 5) == 0) 1289 tty_default_features(&c->term_features, "tmux", 0); 1290 else if (strncmp(tmp, "XTerm(", 6) == 0) 1291 tty_default_features(&c->term_features, "XTerm", 0); 1292 else if (strncmp(tmp, "mintty ", 7) == 0) 1293 tty_default_features(&c->term_features, "mintty", 0); 1294 log_debug("%s: received extended DA %.*s", c->name, (int)*size, buf); 1295 1296 free(c->term_type); 1297 c->term_type = xstrdup(tmp); 1298 1299 tty_update_features(tty); 1300 tty->flags |= TTY_HAVEXDA; 1301 1302 return (0); 1303 } 1304