1 /* $OpenBSD: input.c,v 1.107 2017/01/07 15:28:13 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 21 #include <stdlib.h> 22 #include <string.h> 23 #include <time.h> 24 25 #include "tmux.h" 26 27 /* 28 * Based on the description by Paul Williams at: 29 * 30 * http://vt100.net/emu/dec_ansi_parser 31 * 32 * With the following changes: 33 * 34 * - 7-bit only. 35 * 36 * - Support for UTF-8. 37 * 38 * - OSC (but not APC) may be terminated by \007 as well as ST. 39 * 40 * - A state for APC similar to OSC. Some terminals appear to use this to set 41 * the title. 42 * 43 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 44 * pretty stupid but not supporting it is more trouble than it is worth. 45 * 46 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 47 * be passed to the underlying terminals. 48 */ 49 50 /* Input parser cell. */ 51 struct input_cell { 52 struct grid_cell cell; 53 int set; 54 int g0set; /* 1 if ACS */ 55 int g1set; /* 1 if ACS */ 56 }; 57 58 /* Input parser context. */ 59 struct input_ctx { 60 struct window_pane *wp; 61 struct screen_write_ctx ctx; 62 63 struct input_cell cell; 64 65 struct input_cell old_cell; 66 u_int old_cx; 67 u_int old_cy; 68 69 u_char interm_buf[4]; 70 size_t interm_len; 71 72 u_char param_buf[64]; 73 size_t param_len; 74 75 #define INPUT_BUF_START 32 76 #define INPUT_BUF_LIMIT 1048576 77 u_char *input_buf; 78 size_t input_len; 79 size_t input_space; 80 81 int param_list[24]; /* -1 not present */ 82 u_int param_list_len; 83 84 struct utf8_data utf8data; 85 86 int ch; 87 int flags; 88 #define INPUT_DISCARD 0x1 89 90 const struct input_state *state; 91 92 /* 93 * All input received since we were last in the ground state. Sent to 94 * control clients on connection. 95 */ 96 struct evbuffer *since_ground; 97 }; 98 99 /* Helper functions. */ 100 struct input_transition; 101 static int input_split(struct input_ctx *); 102 static int input_get(struct input_ctx *, u_int, int, int); 103 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 104 static void input_set_state(struct window_pane *, 105 const struct input_transition *); 106 static void input_reset_cell(struct input_ctx *); 107 108 static void input_osc_4(struct window_pane *, const char *); 109 static void input_osc_104(struct window_pane *, const char *); 110 111 /* Transition entry/exit handlers. */ 112 static void input_clear(struct input_ctx *); 113 static void input_ground(struct input_ctx *); 114 static void input_enter_osc(struct input_ctx *); 115 static void input_exit_osc(struct input_ctx *); 116 static void input_enter_apc(struct input_ctx *); 117 static void input_exit_apc(struct input_ctx *); 118 static void input_enter_rename(struct input_ctx *); 119 static void input_exit_rename(struct input_ctx *); 120 121 /* Input state handlers. */ 122 static int input_print(struct input_ctx *); 123 static int input_intermediate(struct input_ctx *); 124 static int input_parameter(struct input_ctx *); 125 static int input_input(struct input_ctx *); 126 static int input_c0_dispatch(struct input_ctx *); 127 static int input_esc_dispatch(struct input_ctx *); 128 static int input_csi_dispatch(struct input_ctx *); 129 static void input_csi_dispatch_rm(struct input_ctx *); 130 static void input_csi_dispatch_rm_private(struct input_ctx *); 131 static void input_csi_dispatch_sm(struct input_ctx *); 132 static void input_csi_dispatch_sm_private(struct input_ctx *); 133 static void input_csi_dispatch_winops(struct input_ctx *); 134 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 135 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 136 static void input_csi_dispatch_sgr(struct input_ctx *); 137 static int input_dcs_dispatch(struct input_ctx *); 138 static int input_utf8_open(struct input_ctx *); 139 static int input_utf8_add(struct input_ctx *); 140 static int input_utf8_close(struct input_ctx *); 141 142 /* Command table comparison function. */ 143 static int input_table_compare(const void *, const void *); 144 145 /* Command table entry. */ 146 struct input_table_entry { 147 int ch; 148 const char *interm; 149 int type; 150 }; 151 152 /* Escape commands. */ 153 enum input_esc_type { 154 INPUT_ESC_DECALN, 155 INPUT_ESC_DECKPAM, 156 INPUT_ESC_DECKPNM, 157 INPUT_ESC_DECRC, 158 INPUT_ESC_DECSC, 159 INPUT_ESC_HTS, 160 INPUT_ESC_IND, 161 INPUT_ESC_NEL, 162 INPUT_ESC_RI, 163 INPUT_ESC_RIS, 164 INPUT_ESC_SCSG0_OFF, 165 INPUT_ESC_SCSG0_ON, 166 INPUT_ESC_SCSG1_OFF, 167 INPUT_ESC_SCSG1_ON, 168 INPUT_ESC_ST, 169 }; 170 171 /* Escape command table. */ 172 static const struct input_table_entry input_esc_table[] = { 173 { '0', "(", INPUT_ESC_SCSG0_ON }, 174 { '0', ")", INPUT_ESC_SCSG1_ON }, 175 { '7', "", INPUT_ESC_DECSC }, 176 { '8', "", INPUT_ESC_DECRC }, 177 { '8', "#", INPUT_ESC_DECALN }, 178 { '=', "", INPUT_ESC_DECKPAM }, 179 { '>', "", INPUT_ESC_DECKPNM }, 180 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 181 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 182 { 'D', "", INPUT_ESC_IND }, 183 { 'E', "", INPUT_ESC_NEL }, 184 { 'H', "", INPUT_ESC_HTS }, 185 { 'M', "", INPUT_ESC_RI }, 186 { '\\', "", INPUT_ESC_ST }, 187 { 'c', "", INPUT_ESC_RIS }, 188 }; 189 190 /* Control (CSI) commands. */ 191 enum input_csi_type { 192 INPUT_CSI_CBT, 193 INPUT_CSI_CNL, 194 INPUT_CSI_CPL, 195 INPUT_CSI_CUB, 196 INPUT_CSI_CUD, 197 INPUT_CSI_CUF, 198 INPUT_CSI_CUP, 199 INPUT_CSI_CUU, 200 INPUT_CSI_DA, 201 INPUT_CSI_DA_TWO, 202 INPUT_CSI_DCH, 203 INPUT_CSI_DECSCUSR, 204 INPUT_CSI_DECSTBM, 205 INPUT_CSI_DL, 206 INPUT_CSI_DSR, 207 INPUT_CSI_ECH, 208 INPUT_CSI_ED, 209 INPUT_CSI_EL, 210 INPUT_CSI_HPA, 211 INPUT_CSI_ICH, 212 INPUT_CSI_IL, 213 INPUT_CSI_RCP, 214 INPUT_CSI_RM, 215 INPUT_CSI_RM_PRIVATE, 216 INPUT_CSI_SCP, 217 INPUT_CSI_SGR, 218 INPUT_CSI_SM, 219 INPUT_CSI_SM_PRIVATE, 220 INPUT_CSI_TBC, 221 INPUT_CSI_VPA, 222 INPUT_CSI_WINOPS, 223 }; 224 225 /* Control (CSI) command table. */ 226 static const struct input_table_entry input_csi_table[] = { 227 { '@', "", INPUT_CSI_ICH }, 228 { 'A', "", INPUT_CSI_CUU }, 229 { 'B', "", INPUT_CSI_CUD }, 230 { 'C', "", INPUT_CSI_CUF }, 231 { 'D', "", INPUT_CSI_CUB }, 232 { 'E', "", INPUT_CSI_CNL }, 233 { 'F', "", INPUT_CSI_CPL }, 234 { 'G', "", INPUT_CSI_HPA }, 235 { 'H', "", INPUT_CSI_CUP }, 236 { 'J', "", INPUT_CSI_ED }, 237 { 'K', "", INPUT_CSI_EL }, 238 { 'L', "", INPUT_CSI_IL }, 239 { 'M', "", INPUT_CSI_DL }, 240 { 'P', "", INPUT_CSI_DCH }, 241 { 'X', "", INPUT_CSI_ECH }, 242 { 'Z', "", INPUT_CSI_CBT }, 243 { 'c', "", INPUT_CSI_DA }, 244 { 'c', ">", INPUT_CSI_DA_TWO }, 245 { 'd', "", INPUT_CSI_VPA }, 246 { 'f', "", INPUT_CSI_CUP }, 247 { 'g', "", INPUT_CSI_TBC }, 248 { 'h', "", INPUT_CSI_SM }, 249 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 250 { 'l', "", INPUT_CSI_RM }, 251 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 252 { 'm', "", INPUT_CSI_SGR }, 253 { 'n', "", INPUT_CSI_DSR }, 254 { 'q', " ", INPUT_CSI_DECSCUSR }, 255 { 'r', "", INPUT_CSI_DECSTBM }, 256 { 's', "", INPUT_CSI_SCP }, 257 { 't', "", INPUT_CSI_WINOPS }, 258 { 'u', "", INPUT_CSI_RCP }, 259 }; 260 261 /* Input transition. */ 262 struct input_transition { 263 int first; 264 int last; 265 266 int (*handler)(struct input_ctx *); 267 const struct input_state *state; 268 }; 269 270 /* Input state. */ 271 struct input_state { 272 const char *name; 273 void (*enter)(struct input_ctx *); 274 void (*exit)(struct input_ctx *); 275 const struct input_transition *transitions; 276 }; 277 278 /* State transitions available from all states. */ 279 #define INPUT_STATE_ANYWHERE \ 280 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 281 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 282 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 283 284 /* Forward declarations of state tables. */ 285 static const struct input_transition input_state_ground_table[]; 286 static const struct input_transition input_state_esc_enter_table[]; 287 static const struct input_transition input_state_esc_intermediate_table[]; 288 static const struct input_transition input_state_csi_enter_table[]; 289 static const struct input_transition input_state_csi_parameter_table[]; 290 static const struct input_transition input_state_csi_intermediate_table[]; 291 static const struct input_transition input_state_csi_ignore_table[]; 292 static const struct input_transition input_state_dcs_enter_table[]; 293 static const struct input_transition input_state_dcs_parameter_table[]; 294 static const struct input_transition input_state_dcs_intermediate_table[]; 295 static const struct input_transition input_state_dcs_handler_table[]; 296 static const struct input_transition input_state_dcs_escape_table[]; 297 static const struct input_transition input_state_dcs_ignore_table[]; 298 static const struct input_transition input_state_osc_string_table[]; 299 static const struct input_transition input_state_apc_string_table[]; 300 static const struct input_transition input_state_rename_string_table[]; 301 static const struct input_transition input_state_consume_st_table[]; 302 static const struct input_transition input_state_utf8_three_table[]; 303 static const struct input_transition input_state_utf8_two_table[]; 304 static const struct input_transition input_state_utf8_one_table[]; 305 306 /* ground state definition. */ 307 static const struct input_state input_state_ground = { 308 "ground", 309 input_ground, NULL, 310 input_state_ground_table 311 }; 312 313 /* esc_enter state definition. */ 314 static const struct input_state input_state_esc_enter = { 315 "esc_enter", 316 input_clear, NULL, 317 input_state_esc_enter_table 318 }; 319 320 /* esc_intermediate state definition. */ 321 static const struct input_state input_state_esc_intermediate = { 322 "esc_intermediate", 323 NULL, NULL, 324 input_state_esc_intermediate_table 325 }; 326 327 /* csi_enter state definition. */ 328 static const struct input_state input_state_csi_enter = { 329 "csi_enter", 330 input_clear, NULL, 331 input_state_csi_enter_table 332 }; 333 334 /* csi_parameter state definition. */ 335 static const struct input_state input_state_csi_parameter = { 336 "csi_parameter", 337 NULL, NULL, 338 input_state_csi_parameter_table 339 }; 340 341 /* csi_intermediate state definition. */ 342 static const struct input_state input_state_csi_intermediate = { 343 "csi_intermediate", 344 NULL, NULL, 345 input_state_csi_intermediate_table 346 }; 347 348 /* csi_ignore state definition. */ 349 static const struct input_state input_state_csi_ignore = { 350 "csi_ignore", 351 NULL, NULL, 352 input_state_csi_ignore_table 353 }; 354 355 /* dcs_enter state definition. */ 356 static const struct input_state input_state_dcs_enter = { 357 "dcs_enter", 358 input_clear, NULL, 359 input_state_dcs_enter_table 360 }; 361 362 /* dcs_parameter state definition. */ 363 static const struct input_state input_state_dcs_parameter = { 364 "dcs_parameter", 365 NULL, NULL, 366 input_state_dcs_parameter_table 367 }; 368 369 /* dcs_intermediate state definition. */ 370 static const struct input_state input_state_dcs_intermediate = { 371 "dcs_intermediate", 372 NULL, NULL, 373 input_state_dcs_intermediate_table 374 }; 375 376 /* dcs_handler state definition. */ 377 static const struct input_state input_state_dcs_handler = { 378 "dcs_handler", 379 NULL, NULL, 380 input_state_dcs_handler_table 381 }; 382 383 /* dcs_escape state definition. */ 384 static const struct input_state input_state_dcs_escape = { 385 "dcs_escape", 386 NULL, NULL, 387 input_state_dcs_escape_table 388 }; 389 390 /* dcs_ignore state definition. */ 391 static const struct input_state input_state_dcs_ignore = { 392 "dcs_ignore", 393 NULL, NULL, 394 input_state_dcs_ignore_table 395 }; 396 397 /* osc_string state definition. */ 398 static const struct input_state input_state_osc_string = { 399 "osc_string", 400 input_enter_osc, input_exit_osc, 401 input_state_osc_string_table 402 }; 403 404 /* apc_string state definition. */ 405 static const struct input_state input_state_apc_string = { 406 "apc_string", 407 input_enter_apc, input_exit_apc, 408 input_state_apc_string_table 409 }; 410 411 /* rename_string state definition. */ 412 static const struct input_state input_state_rename_string = { 413 "rename_string", 414 input_enter_rename, input_exit_rename, 415 input_state_rename_string_table 416 }; 417 418 /* consume_st state definition. */ 419 static const struct input_state input_state_consume_st = { 420 "consume_st", 421 NULL, NULL, 422 input_state_consume_st_table 423 }; 424 425 /* utf8_three state definition. */ 426 static const struct input_state input_state_utf8_three = { 427 "utf8_three", 428 NULL, NULL, 429 input_state_utf8_three_table 430 }; 431 432 /* utf8_two state definition. */ 433 static const struct input_state input_state_utf8_two = { 434 "utf8_two", 435 NULL, NULL, 436 input_state_utf8_two_table 437 }; 438 439 /* utf8_one state definition. */ 440 static const struct input_state input_state_utf8_one = { 441 "utf8_one", 442 NULL, NULL, 443 input_state_utf8_one_table 444 }; 445 446 /* ground state table. */ 447 static const struct input_transition input_state_ground_table[] = { 448 INPUT_STATE_ANYWHERE, 449 450 { 0x00, 0x17, input_c0_dispatch, NULL }, 451 { 0x19, 0x19, input_c0_dispatch, NULL }, 452 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 453 { 0x20, 0x7e, input_print, NULL }, 454 { 0x7f, 0x7f, NULL, NULL }, 455 { 0x80, 0xc1, NULL, NULL }, 456 { 0xc2, 0xdf, input_utf8_open, &input_state_utf8_one }, 457 { 0xe0, 0xef, input_utf8_open, &input_state_utf8_two }, 458 { 0xf0, 0xf4, input_utf8_open, &input_state_utf8_three }, 459 { 0xf5, 0xff, NULL, NULL }, 460 461 { -1, -1, NULL, NULL } 462 }; 463 464 /* esc_enter state table. */ 465 static const struct input_transition input_state_esc_enter_table[] = { 466 INPUT_STATE_ANYWHERE, 467 468 { 0x00, 0x17, input_c0_dispatch, NULL }, 469 { 0x19, 0x19, input_c0_dispatch, NULL }, 470 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 471 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 472 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 473 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 474 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 475 { 0x58, 0x58, NULL, &input_state_consume_st }, 476 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 477 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 478 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 479 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 480 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 481 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 482 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 483 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 484 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 485 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 486 { 0x7f, 0xff, NULL, NULL }, 487 488 { -1, -1, NULL, NULL } 489 }; 490 491 /* esc_interm state table. */ 492 static const struct input_transition input_state_esc_intermediate_table[] = { 493 INPUT_STATE_ANYWHERE, 494 495 { 0x00, 0x17, input_c0_dispatch, NULL }, 496 { 0x19, 0x19, input_c0_dispatch, NULL }, 497 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 498 { 0x20, 0x2f, input_intermediate, NULL }, 499 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 500 { 0x7f, 0xff, NULL, NULL }, 501 502 { -1, -1, NULL, NULL } 503 }; 504 505 /* csi_enter state table. */ 506 static const struct input_transition input_state_csi_enter_table[] = { 507 INPUT_STATE_ANYWHERE, 508 509 { 0x00, 0x17, input_c0_dispatch, NULL }, 510 { 0x19, 0x19, input_c0_dispatch, NULL }, 511 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 512 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 513 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 514 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 515 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 516 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 517 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 518 { 0x7f, 0xff, NULL, NULL }, 519 520 { -1, -1, NULL, NULL } 521 }; 522 523 /* csi_parameter state table. */ 524 static const struct input_transition input_state_csi_parameter_table[] = { 525 INPUT_STATE_ANYWHERE, 526 527 { 0x00, 0x17, input_c0_dispatch, NULL }, 528 { 0x19, 0x19, input_c0_dispatch, NULL }, 529 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 530 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 531 { 0x30, 0x39, input_parameter, NULL }, 532 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 533 { 0x3b, 0x3b, input_parameter, NULL }, 534 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 535 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 536 { 0x7f, 0xff, NULL, NULL }, 537 538 { -1, -1, NULL, NULL } 539 }; 540 541 /* csi_intermediate state table. */ 542 static const struct input_transition input_state_csi_intermediate_table[] = { 543 INPUT_STATE_ANYWHERE, 544 545 { 0x00, 0x17, input_c0_dispatch, NULL }, 546 { 0x19, 0x19, input_c0_dispatch, NULL }, 547 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 548 { 0x20, 0x2f, input_intermediate, NULL }, 549 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 550 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 551 { 0x7f, 0xff, NULL, NULL }, 552 553 { -1, -1, NULL, NULL } 554 }; 555 556 /* csi_ignore state table. */ 557 static const struct input_transition input_state_csi_ignore_table[] = { 558 INPUT_STATE_ANYWHERE, 559 560 { 0x00, 0x17, input_c0_dispatch, NULL }, 561 { 0x19, 0x19, input_c0_dispatch, NULL }, 562 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 563 { 0x20, 0x3f, NULL, NULL }, 564 { 0x40, 0x7e, NULL, &input_state_ground }, 565 { 0x7f, 0xff, NULL, NULL }, 566 567 { -1, -1, NULL, NULL } 568 }; 569 570 /* dcs_enter state table. */ 571 static const struct input_transition input_state_dcs_enter_table[] = { 572 INPUT_STATE_ANYWHERE, 573 574 { 0x00, 0x17, NULL, NULL }, 575 { 0x19, 0x19, NULL, NULL }, 576 { 0x1c, 0x1f, NULL, NULL }, 577 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 578 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 579 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 580 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 581 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 582 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 583 { 0x7f, 0xff, NULL, NULL }, 584 585 { -1, -1, NULL, NULL } 586 }; 587 588 /* dcs_parameter state table. */ 589 static const struct input_transition input_state_dcs_parameter_table[] = { 590 INPUT_STATE_ANYWHERE, 591 592 { 0x00, 0x17, NULL, NULL }, 593 { 0x19, 0x19, NULL, NULL }, 594 { 0x1c, 0x1f, NULL, NULL }, 595 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 596 { 0x30, 0x39, input_parameter, NULL }, 597 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 598 { 0x3b, 0x3b, input_parameter, NULL }, 599 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 600 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 601 { 0x7f, 0xff, NULL, NULL }, 602 603 { -1, -1, NULL, NULL } 604 }; 605 606 /* dcs_interm state table. */ 607 static const struct input_transition input_state_dcs_intermediate_table[] = { 608 INPUT_STATE_ANYWHERE, 609 610 { 0x00, 0x17, NULL, NULL }, 611 { 0x19, 0x19, NULL, NULL }, 612 { 0x1c, 0x1f, NULL, NULL }, 613 { 0x20, 0x2f, input_intermediate, NULL }, 614 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 615 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 616 { 0x7f, 0xff, NULL, NULL }, 617 618 { -1, -1, NULL, NULL } 619 }; 620 621 /* dcs_handler state table. */ 622 static const struct input_transition input_state_dcs_handler_table[] = { 623 /* No INPUT_STATE_ANYWHERE */ 624 625 { 0x00, 0x1a, input_input, NULL }, 626 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 627 { 0x1c, 0xff, input_input, NULL }, 628 629 { -1, -1, NULL, NULL } 630 }; 631 632 /* dcs_escape state table. */ 633 static const struct input_transition input_state_dcs_escape_table[] = { 634 /* No INPUT_STATE_ANYWHERE */ 635 636 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 637 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 638 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 639 640 { -1, -1, NULL, NULL } 641 }; 642 643 /* dcs_ignore state table. */ 644 static const struct input_transition input_state_dcs_ignore_table[] = { 645 INPUT_STATE_ANYWHERE, 646 647 { 0x00, 0x17, NULL, NULL }, 648 { 0x19, 0x19, NULL, NULL }, 649 { 0x1c, 0x1f, NULL, NULL }, 650 { 0x20, 0xff, NULL, NULL }, 651 652 { -1, -1, NULL, NULL } 653 }; 654 655 /* osc_string state table. */ 656 static const struct input_transition input_state_osc_string_table[] = { 657 INPUT_STATE_ANYWHERE, 658 659 { 0x00, 0x06, NULL, NULL }, 660 { 0x07, 0x07, NULL, &input_state_ground }, 661 { 0x08, 0x17, NULL, NULL }, 662 { 0x19, 0x19, NULL, NULL }, 663 { 0x1c, 0x1f, NULL, NULL }, 664 { 0x20, 0xff, input_input, NULL }, 665 666 { -1, -1, NULL, NULL } 667 }; 668 669 /* apc_string state table. */ 670 static const struct input_transition input_state_apc_string_table[] = { 671 INPUT_STATE_ANYWHERE, 672 673 { 0x00, 0x17, NULL, NULL }, 674 { 0x19, 0x19, NULL, NULL }, 675 { 0x1c, 0x1f, NULL, NULL }, 676 { 0x20, 0xff, input_input, NULL }, 677 678 { -1, -1, NULL, NULL } 679 }; 680 681 /* rename_string state table. */ 682 static const struct input_transition input_state_rename_string_table[] = { 683 INPUT_STATE_ANYWHERE, 684 685 { 0x00, 0x17, NULL, NULL }, 686 { 0x19, 0x19, NULL, NULL }, 687 { 0x1c, 0x1f, NULL, NULL }, 688 { 0x20, 0xff, input_input, NULL }, 689 690 { -1, -1, NULL, NULL } 691 }; 692 693 /* consume_st state table. */ 694 static const struct input_transition input_state_consume_st_table[] = { 695 INPUT_STATE_ANYWHERE, 696 697 { 0x00, 0x17, NULL, NULL }, 698 { 0x19, 0x19, NULL, NULL }, 699 { 0x1c, 0x1f, NULL, NULL }, 700 { 0x20, 0xff, NULL, NULL }, 701 702 { -1, -1, NULL, NULL } 703 }; 704 705 /* utf8_three state table. */ 706 static const struct input_transition input_state_utf8_three_table[] = { 707 /* No INPUT_STATE_ANYWHERE */ 708 709 { 0x00, 0x7f, NULL, &input_state_ground }, 710 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_two }, 711 { 0xc0, 0xff, NULL, &input_state_ground }, 712 713 { -1, -1, NULL, NULL } 714 }; 715 716 /* utf8_two state table. */ 717 static const struct input_transition input_state_utf8_two_table[] = { 718 /* No INPUT_STATE_ANYWHERE */ 719 720 { 0x00, 0x7f, NULL, &input_state_ground }, 721 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_one }, 722 { 0xc0, 0xff, NULL, &input_state_ground }, 723 724 { -1, -1, NULL, NULL } 725 }; 726 727 /* utf8_one state table. */ 728 static const struct input_transition input_state_utf8_one_table[] = { 729 /* No INPUT_STATE_ANYWHERE */ 730 731 { 0x00, 0x7f, NULL, &input_state_ground }, 732 { 0x80, 0xbf, input_utf8_close, &input_state_ground }, 733 { 0xc0, 0xff, NULL, &input_state_ground }, 734 735 { -1, -1, NULL, NULL } 736 }; 737 738 /* Input table compare. */ 739 static int 740 input_table_compare(const void *key, const void *value) 741 { 742 const struct input_ctx *ictx = key; 743 const struct input_table_entry *entry = value; 744 745 if (ictx->ch != entry->ch) 746 return (ictx->ch - entry->ch); 747 return (strcmp(ictx->interm_buf, entry->interm)); 748 } 749 750 /* Reset cell state to default. */ 751 static void 752 input_reset_cell(struct input_ctx *ictx) 753 { 754 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 755 ictx->cell.set = 0; 756 ictx->cell.g0set = ictx->cell.g1set = 0; 757 758 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 759 ictx->old_cx = 0; 760 ictx->old_cy = 0; 761 } 762 763 /* Initialise input parser. */ 764 void 765 input_init(struct window_pane *wp) 766 { 767 struct input_ctx *ictx; 768 769 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 770 771 ictx->input_space = INPUT_BUF_START; 772 ictx->input_buf = xmalloc(INPUT_BUF_START); 773 774 ictx->since_ground = evbuffer_new(); 775 776 input_reset(wp, 0); 777 } 778 779 /* Destroy input parser. */ 780 void 781 input_free(struct window_pane *wp) 782 { 783 struct input_ctx *ictx = wp->ictx; 784 785 free(ictx->input_buf); 786 evbuffer_free(ictx->since_ground); 787 788 free(ictx); 789 wp->ictx = NULL; 790 } 791 792 /* Reset input state and clear screen. */ 793 void 794 input_reset(struct window_pane *wp, int clear) 795 { 796 struct input_ctx *ictx = wp->ictx; 797 798 input_reset_cell(ictx); 799 800 if (clear) { 801 if (wp->mode == NULL) 802 screen_write_start(&ictx->ctx, wp, &wp->base); 803 else 804 screen_write_start(&ictx->ctx, NULL, &wp->base); 805 screen_write_reset(&ictx->ctx); 806 screen_write_stop(&ictx->ctx); 807 } 808 809 *ictx->interm_buf = '\0'; 810 ictx->interm_len = 0; 811 812 *ictx->param_buf = '\0'; 813 ictx->param_len = 0; 814 815 *ictx->input_buf = '\0'; 816 ictx->input_len = 0; 817 818 ictx->state = &input_state_ground; 819 ictx->flags = 0; 820 } 821 822 /* Return pending data. */ 823 struct evbuffer * 824 input_pending(struct window_pane *wp) 825 { 826 return (wp->ictx->since_ground); 827 } 828 829 /* Change input state. */ 830 static void 831 input_set_state(struct window_pane *wp, const struct input_transition *itr) 832 { 833 struct input_ctx *ictx = wp->ictx; 834 835 if (ictx->state->exit != NULL) 836 ictx->state->exit(ictx); 837 ictx->state = itr->state; 838 if (ictx->state->enter != NULL) 839 ictx->state->enter(ictx); 840 } 841 842 /* Parse input. */ 843 void 844 input_parse(struct window_pane *wp) 845 { 846 struct input_ctx *ictx = wp->ictx; 847 const struct input_transition *itr; 848 struct evbuffer *evb = wp->event->input; 849 u_char *buf; 850 size_t len, off; 851 852 if (EVBUFFER_LENGTH(evb) == 0) 853 return; 854 855 window_update_activity(wp->window); 856 wp->flags |= PANE_CHANGED; 857 858 /* 859 * Open the screen. Use NULL wp if there is a mode set as don't want to 860 * update the tty. 861 */ 862 if (wp->mode == NULL) 863 screen_write_start(&ictx->ctx, wp, &wp->base); 864 else 865 screen_write_start(&ictx->ctx, NULL, &wp->base); 866 ictx->wp = wp; 867 868 buf = EVBUFFER_DATA(evb); 869 len = EVBUFFER_LENGTH(evb); 870 notify_input(wp, evb); 871 off = 0; 872 873 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 874 ictx->state->name, len, (int)len, buf); 875 876 /* Parse the input. */ 877 while (off < len) { 878 ictx->ch = buf[off++]; 879 880 /* Find the transition. */ 881 itr = ictx->state->transitions; 882 while (itr->first != -1 && itr->last != -1) { 883 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 884 break; 885 itr++; 886 } 887 if (itr->first == -1 || itr->last == -1) { 888 /* No transition? Eh? */ 889 fatalx("no transition from state"); 890 } 891 892 /* 893 * Execute the handler, if any. Don't switch state if it 894 * returns non-zero. 895 */ 896 if (itr->handler != NULL && itr->handler(ictx) != 0) 897 continue; 898 899 /* And switch state, if necessary. */ 900 if (itr->state != NULL) 901 input_set_state(wp, itr); 902 903 /* If not in ground state, save input. */ 904 if (ictx->state != &input_state_ground) 905 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 906 } 907 908 /* Close the screen. */ 909 screen_write_stop(&ictx->ctx); 910 911 evbuffer_drain(evb, len); 912 } 913 914 /* Split the parameter list (if any). */ 915 static int 916 input_split(struct input_ctx *ictx) 917 918 { 919 const char *errstr; 920 char *ptr, *out; 921 int n; 922 923 ictx->param_list_len = 0; 924 if (ictx->param_len == 0) 925 return (0); 926 927 ptr = ictx->param_buf; 928 while ((out = strsep(&ptr, ";")) != NULL) { 929 if (*out == '\0') 930 n = -1; 931 else { 932 n = strtonum(out, 0, INT_MAX, &errstr); 933 if (errstr != NULL) 934 return (-1); 935 } 936 937 ictx->param_list[ictx->param_list_len++] = n; 938 if (ictx->param_list_len == nitems(ictx->param_list)) 939 return (-1); 940 } 941 942 return (0); 943 } 944 945 /* Get an argument or return default value. */ 946 static int 947 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 948 { 949 int retval; 950 951 if (validx >= ictx->param_list_len) 952 return (defval); 953 954 retval = ictx->param_list[validx]; 955 if (retval == -1) 956 return (defval); 957 if (retval < minval) 958 return (minval); 959 return (retval); 960 } 961 962 /* Reply to terminal query. */ 963 static void 964 input_reply(struct input_ctx *ictx, const char *fmt, ...) 965 { 966 va_list ap; 967 char *reply; 968 969 va_start(ap, fmt); 970 xvasprintf(&reply, fmt, ap); 971 va_end(ap); 972 973 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 974 free(reply); 975 } 976 977 /* Clear saved state. */ 978 static void 979 input_clear(struct input_ctx *ictx) 980 { 981 *ictx->interm_buf = '\0'; 982 ictx->interm_len = 0; 983 984 *ictx->param_buf = '\0'; 985 ictx->param_len = 0; 986 987 *ictx->input_buf = '\0'; 988 ictx->input_len = 0; 989 990 ictx->flags &= ~INPUT_DISCARD; 991 } 992 993 /* Reset for ground state. */ 994 static void 995 input_ground(struct input_ctx *ictx) 996 { 997 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 998 999 if (ictx->input_space > INPUT_BUF_START) { 1000 ictx->input_space = INPUT_BUF_START; 1001 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1002 } 1003 } 1004 1005 /* Output this character to the screen. */ 1006 static int 1007 input_print(struct input_ctx *ictx) 1008 { 1009 int set; 1010 1011 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1012 if (set == 1) 1013 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1014 else 1015 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1016 1017 utf8_set(&ictx->cell.cell.data, ictx->ch); 1018 screen_write_cell(&ictx->ctx, &ictx->cell.cell); 1019 1020 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1021 1022 return (0); 1023 } 1024 1025 /* Collect intermediate string. */ 1026 static int 1027 input_intermediate(struct input_ctx *ictx) 1028 { 1029 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1030 ictx->flags |= INPUT_DISCARD; 1031 else { 1032 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1033 ictx->interm_buf[ictx->interm_len] = '\0'; 1034 } 1035 1036 return (0); 1037 } 1038 1039 /* Collect parameter string. */ 1040 static int 1041 input_parameter(struct input_ctx *ictx) 1042 { 1043 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1044 ictx->flags |= INPUT_DISCARD; 1045 else { 1046 ictx->param_buf[ictx->param_len++] = ictx->ch; 1047 ictx->param_buf[ictx->param_len] = '\0'; 1048 } 1049 1050 return (0); 1051 } 1052 1053 /* Collect input string. */ 1054 static int 1055 input_input(struct input_ctx *ictx) 1056 { 1057 size_t available; 1058 1059 available = ictx->input_space; 1060 while (ictx->input_len + 1 >= available) { 1061 available *= 2; 1062 if (available > INPUT_BUF_LIMIT) { 1063 ictx->flags |= INPUT_DISCARD; 1064 return (0); 1065 } 1066 ictx->input_buf = xrealloc(ictx->input_buf, available); 1067 ictx->input_space = available; 1068 } 1069 ictx->input_buf[ictx->input_len++] = ictx->ch; 1070 ictx->input_buf[ictx->input_len] = '\0'; 1071 1072 return (0); 1073 } 1074 1075 /* Execute C0 control sequence. */ 1076 static int 1077 input_c0_dispatch(struct input_ctx *ictx) 1078 { 1079 struct screen_write_ctx *sctx = &ictx->ctx; 1080 struct window_pane *wp = ictx->wp; 1081 struct screen *s = sctx->s; 1082 1083 log_debug("%s: '%c'", __func__, ictx->ch); 1084 1085 switch (ictx->ch) { 1086 case '\000': /* NUL */ 1087 break; 1088 case '\007': /* BEL */ 1089 alerts_queue(wp->window, WINDOW_BELL); 1090 break; 1091 case '\010': /* BS */ 1092 screen_write_backspace(sctx); 1093 break; 1094 case '\011': /* HT */ 1095 /* Don't tab beyond the end of the line. */ 1096 if (s->cx >= screen_size_x(s) - 1) 1097 break; 1098 1099 /* Find the next tab point, or use the last column if none. */ 1100 do { 1101 s->cx++; 1102 if (bit_test(s->tabs, s->cx)) 1103 break; 1104 } while (s->cx < screen_size_x(s) - 1); 1105 break; 1106 case '\012': /* LF */ 1107 case '\013': /* VT */ 1108 case '\014': /* FF */ 1109 screen_write_linefeed(sctx, 0); 1110 break; 1111 case '\015': /* CR */ 1112 screen_write_carriagereturn(sctx); 1113 break; 1114 case '\016': /* SO */ 1115 ictx->cell.set = 1; 1116 break; 1117 case '\017': /* SI */ 1118 ictx->cell.set = 0; 1119 break; 1120 default: 1121 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1122 break; 1123 } 1124 1125 return (0); 1126 } 1127 1128 /* Execute escape sequence. */ 1129 static int 1130 input_esc_dispatch(struct input_ctx *ictx) 1131 { 1132 struct screen_write_ctx *sctx = &ictx->ctx; 1133 struct screen *s = sctx->s; 1134 struct input_table_entry *entry; 1135 1136 if (ictx->flags & INPUT_DISCARD) 1137 return (0); 1138 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1139 1140 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1141 sizeof input_esc_table[0], input_table_compare); 1142 if (entry == NULL) { 1143 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1144 return (0); 1145 } 1146 1147 switch (entry->type) { 1148 case INPUT_ESC_RIS: 1149 window_pane_reset_palette(ictx->wp); 1150 input_reset_cell(ictx); 1151 screen_write_reset(sctx); 1152 break; 1153 case INPUT_ESC_IND: 1154 screen_write_linefeed(sctx, 0); 1155 break; 1156 case INPUT_ESC_NEL: 1157 screen_write_carriagereturn(sctx); 1158 screen_write_linefeed(sctx, 0); 1159 break; 1160 case INPUT_ESC_HTS: 1161 if (s->cx < screen_size_x(s)) 1162 bit_set(s->tabs, s->cx); 1163 break; 1164 case INPUT_ESC_RI: 1165 screen_write_reverseindex(sctx); 1166 break; 1167 case INPUT_ESC_DECKPAM: 1168 screen_write_mode_set(sctx, MODE_KKEYPAD); 1169 break; 1170 case INPUT_ESC_DECKPNM: 1171 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1172 break; 1173 case INPUT_ESC_DECSC: 1174 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1175 ictx->old_cx = s->cx; 1176 ictx->old_cy = s->cy; 1177 break; 1178 case INPUT_ESC_DECRC: 1179 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1180 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1181 break; 1182 case INPUT_ESC_DECALN: 1183 screen_write_alignmenttest(sctx); 1184 break; 1185 case INPUT_ESC_SCSG0_ON: 1186 ictx->cell.g0set = 1; 1187 break; 1188 case INPUT_ESC_SCSG0_OFF: 1189 ictx->cell.g0set = 0; 1190 break; 1191 case INPUT_ESC_SCSG1_ON: 1192 ictx->cell.g1set = 1; 1193 break; 1194 case INPUT_ESC_SCSG1_OFF: 1195 ictx->cell.g1set = 0; 1196 break; 1197 case INPUT_ESC_ST: 1198 /* ST terminates OSC but the state transition already did it. */ 1199 break; 1200 } 1201 1202 return (0); 1203 } 1204 1205 /* Execute control sequence. */ 1206 static int 1207 input_csi_dispatch(struct input_ctx *ictx) 1208 { 1209 struct screen_write_ctx *sctx = &ictx->ctx; 1210 struct screen *s = sctx->s; 1211 struct input_table_entry *entry; 1212 int n, m; 1213 u_int cx; 1214 1215 if (ictx->flags & INPUT_DISCARD) 1216 return (0); 1217 if (input_split(ictx) != 0) 1218 return (0); 1219 log_debug("%s: '%c' \"%s\" \"%s\"", 1220 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1221 1222 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1223 sizeof input_csi_table[0], input_table_compare); 1224 if (entry == NULL) { 1225 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1226 return (0); 1227 } 1228 1229 switch (entry->type) { 1230 case INPUT_CSI_CBT: 1231 /* Find the previous tab point, n times. */ 1232 cx = s->cx; 1233 if (cx > screen_size_x(s) - 1) 1234 cx = screen_size_x(s) - 1; 1235 n = input_get(ictx, 0, 1, 1); 1236 while (cx > 0 && n-- > 0) { 1237 do 1238 cx--; 1239 while (cx > 0 && !bit_test(s->tabs, cx)); 1240 } 1241 s->cx = cx; 1242 break; 1243 case INPUT_CSI_CUB: 1244 screen_write_cursorleft(sctx, input_get(ictx, 0, 1, 1)); 1245 break; 1246 case INPUT_CSI_CUD: 1247 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1248 break; 1249 case INPUT_CSI_CUF: 1250 screen_write_cursorright(sctx, input_get(ictx, 0, 1, 1)); 1251 break; 1252 case INPUT_CSI_CUP: 1253 n = input_get(ictx, 0, 1, 1); 1254 m = input_get(ictx, 1, 1, 1); 1255 screen_write_cursormove(sctx, m - 1, n - 1); 1256 break; 1257 case INPUT_CSI_WINOPS: 1258 input_csi_dispatch_winops(ictx); 1259 break; 1260 case INPUT_CSI_CUU: 1261 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1262 break; 1263 case INPUT_CSI_CNL: 1264 screen_write_carriagereturn(sctx); 1265 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1266 break; 1267 case INPUT_CSI_CPL: 1268 screen_write_carriagereturn(sctx); 1269 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1270 break; 1271 case INPUT_CSI_DA: 1272 switch (input_get(ictx, 0, 0, 0)) { 1273 case 0: 1274 input_reply(ictx, "\033[?1;2c"); 1275 break; 1276 default: 1277 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1278 break; 1279 } 1280 break; 1281 case INPUT_CSI_DA_TWO: 1282 switch (input_get(ictx, 0, 0, 0)) { 1283 case 0: 1284 input_reply(ictx, "\033[>84;0;0c"); 1285 break; 1286 default: 1287 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1288 break; 1289 } 1290 break; 1291 case INPUT_CSI_ECH: 1292 screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1)); 1293 break; 1294 case INPUT_CSI_DCH: 1295 screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1), 1296 ictx->cell.cell.bg); 1297 break; 1298 case INPUT_CSI_DECSTBM: 1299 n = input_get(ictx, 0, 1, 1); 1300 m = input_get(ictx, 1, 1, screen_size_y(s)); 1301 screen_write_scrollregion(sctx, n - 1, m - 1); 1302 break; 1303 case INPUT_CSI_DL: 1304 screen_write_deleteline(sctx, input_get(ictx, 0, 1, 1), 1305 ictx->cell.cell.bg); 1306 break; 1307 case INPUT_CSI_DSR: 1308 switch (input_get(ictx, 0, 0, 0)) { 1309 case 5: 1310 input_reply(ictx, "\033[0n"); 1311 break; 1312 case 6: 1313 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1314 break; 1315 default: 1316 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1317 break; 1318 } 1319 break; 1320 case INPUT_CSI_ED: 1321 switch (input_get(ictx, 0, 0, 0)) { 1322 case 0: 1323 screen_write_clearendofscreen(sctx, ictx->cell.cell.bg); 1324 break; 1325 case 1: 1326 screen_write_clearstartofscreen(sctx); 1327 break; 1328 case 2: 1329 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1330 break; 1331 case 3: 1332 switch (input_get(ictx, 1, 0, 0)) { 1333 case 0: 1334 /* 1335 * Linux console extension to clear history 1336 * (for example before locking the screen). 1337 */ 1338 screen_write_clearhistory(sctx); 1339 break; 1340 } 1341 break; 1342 default: 1343 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1344 break; 1345 } 1346 break; 1347 case INPUT_CSI_EL: 1348 switch (input_get(ictx, 0, 0, 0)) { 1349 case 0: 1350 screen_write_clearendofline(sctx, ictx->cell.cell.bg); 1351 break; 1352 case 1: 1353 screen_write_clearstartofline(sctx, ictx->cell.cell.bg); 1354 break; 1355 case 2: 1356 screen_write_clearline(sctx, ictx->cell.cell.bg); 1357 break; 1358 default: 1359 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1360 break; 1361 } 1362 break; 1363 case INPUT_CSI_HPA: 1364 n = input_get(ictx, 0, 1, 1); 1365 screen_write_cursormove(sctx, n - 1, s->cy); 1366 break; 1367 case INPUT_CSI_ICH: 1368 screen_write_insertcharacter(sctx, input_get(ictx, 0, 1, 1), 1369 ictx->cell.cell.bg); 1370 break; 1371 case INPUT_CSI_IL: 1372 screen_write_insertline(sctx, input_get(ictx, 0, 1, 1), 1373 ictx->cell.cell.bg); 1374 break; 1375 case INPUT_CSI_RCP: 1376 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1377 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1378 break; 1379 case INPUT_CSI_RM: 1380 input_csi_dispatch_rm(ictx); 1381 break; 1382 case INPUT_CSI_RM_PRIVATE: 1383 input_csi_dispatch_rm_private(ictx); 1384 break; 1385 case INPUT_CSI_SCP: 1386 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1387 ictx->old_cx = s->cx; 1388 ictx->old_cy = s->cy; 1389 break; 1390 case INPUT_CSI_SGR: 1391 input_csi_dispatch_sgr(ictx); 1392 break; 1393 case INPUT_CSI_SM: 1394 input_csi_dispatch_sm(ictx); 1395 break; 1396 case INPUT_CSI_SM_PRIVATE: 1397 input_csi_dispatch_sm_private(ictx); 1398 break; 1399 case INPUT_CSI_TBC: 1400 switch (input_get(ictx, 0, 0, 0)) { 1401 case 0: 1402 if (s->cx < screen_size_x(s)) 1403 bit_clear(s->tabs, s->cx); 1404 break; 1405 case 3: 1406 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1407 break; 1408 default: 1409 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1410 break; 1411 } 1412 break; 1413 case INPUT_CSI_VPA: 1414 n = input_get(ictx, 0, 1, 1); 1415 screen_write_cursormove(sctx, s->cx, n - 1); 1416 break; 1417 case INPUT_CSI_DECSCUSR: 1418 n = input_get(ictx, 0, 0, 0); 1419 screen_set_cursor_style(s, n); 1420 break; 1421 } 1422 1423 return (0); 1424 } 1425 1426 /* Handle CSI RM. */ 1427 static void 1428 input_csi_dispatch_rm(struct input_ctx *ictx) 1429 { 1430 u_int i; 1431 1432 for (i = 0; i < ictx->param_list_len; i++) { 1433 switch (input_get(ictx, i, 0, -1)) { 1434 case 4: /* IRM */ 1435 screen_write_mode_clear(&ictx->ctx, MODE_INSERT); 1436 break; 1437 case 34: 1438 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1439 break; 1440 default: 1441 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1442 break; 1443 } 1444 } 1445 } 1446 1447 /* Handle CSI private RM. */ 1448 static void 1449 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1450 { 1451 struct window_pane *wp = ictx->wp; 1452 u_int i; 1453 1454 for (i = 0; i < ictx->param_list_len; i++) { 1455 switch (input_get(ictx, i, 0, -1)) { 1456 case 1: /* DECCKM */ 1457 screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR); 1458 break; 1459 case 3: /* DECCOLM */ 1460 screen_write_cursormove(&ictx->ctx, 0, 0); 1461 screen_write_clearscreen(&ictx->ctx, 1462 ictx->cell.cell.bg); 1463 break; 1464 case 7: /* DECAWM */ 1465 screen_write_mode_clear(&ictx->ctx, MODE_WRAP); 1466 break; 1467 case 12: 1468 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1469 break; 1470 case 25: /* TCEM */ 1471 screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); 1472 break; 1473 case 1000: 1474 case 1001: 1475 case 1002: 1476 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1477 break; 1478 case 1004: 1479 screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON); 1480 break; 1481 case 1005: 1482 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8); 1483 break; 1484 case 1006: 1485 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR); 1486 break; 1487 case 47: 1488 case 1047: 1489 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1490 break; 1491 case 1049: 1492 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1493 break; 1494 case 2004: 1495 screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE); 1496 break; 1497 default: 1498 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1499 break; 1500 } 1501 } 1502 } 1503 1504 /* Handle CSI SM. */ 1505 static void 1506 input_csi_dispatch_sm(struct input_ctx *ictx) 1507 { 1508 u_int i; 1509 1510 for (i = 0; i < ictx->param_list_len; i++) { 1511 switch (input_get(ictx, i, 0, -1)) { 1512 case 4: /* IRM */ 1513 screen_write_mode_set(&ictx->ctx, MODE_INSERT); 1514 break; 1515 case 34: 1516 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1517 break; 1518 default: 1519 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1520 break; 1521 } 1522 } 1523 } 1524 1525 /* Handle CSI private SM. */ 1526 static void 1527 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1528 { 1529 struct window_pane *wp = ictx->wp; 1530 u_int i; 1531 1532 for (i = 0; i < ictx->param_list_len; i++) { 1533 switch (input_get(ictx, i, 0, -1)) { 1534 case 1: /* DECCKM */ 1535 screen_write_mode_set(&ictx->ctx, MODE_KCURSOR); 1536 break; 1537 case 3: /* DECCOLM */ 1538 screen_write_cursormove(&ictx->ctx, 0, 0); 1539 screen_write_clearscreen(&ictx->ctx, 1540 ictx->cell.cell.bg); 1541 break; 1542 case 7: /* DECAWM */ 1543 screen_write_mode_set(&ictx->ctx, MODE_WRAP); 1544 break; 1545 case 12: 1546 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1547 break; 1548 case 25: /* TCEM */ 1549 screen_write_mode_set(&ictx->ctx, MODE_CURSOR); 1550 break; 1551 case 1000: 1552 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1553 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD); 1554 break; 1555 case 1002: 1556 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1557 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON); 1558 break; 1559 case 1004: 1560 if (ictx->ctx.s->mode & MODE_FOCUSON) 1561 break; 1562 screen_write_mode_set(&ictx->ctx, MODE_FOCUSON); 1563 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1564 break; 1565 case 1005: 1566 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8); 1567 break; 1568 case 1006: 1569 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR); 1570 break; 1571 case 47: 1572 case 1047: 1573 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1574 break; 1575 case 1049: 1576 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1577 break; 1578 case 2004: 1579 screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE); 1580 break; 1581 default: 1582 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1583 break; 1584 } 1585 } 1586 } 1587 1588 /* Handle CSI window operations. */ 1589 static void 1590 input_csi_dispatch_winops(struct input_ctx *ictx) 1591 { 1592 struct window_pane *wp = ictx->wp; 1593 int n, m; 1594 1595 m = 0; 1596 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1597 switch (n) { 1598 case 1: 1599 case 2: 1600 case 5: 1601 case 6: 1602 case 7: 1603 case 11: 1604 case 13: 1605 case 14: 1606 case 19: 1607 case 20: 1608 case 21: 1609 case 24: 1610 break; 1611 case 3: 1612 case 4: 1613 case 8: 1614 m++; 1615 if (input_get(ictx, m, 0, -1) == -1) 1616 return; 1617 /* FALLTHROUGH */ 1618 case 9: 1619 case 10: 1620 case 22: 1621 case 23: 1622 m++; 1623 if (input_get(ictx, m, 0, -1) == -1) 1624 return; 1625 break; 1626 case 18: 1627 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1628 break; 1629 default: 1630 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1631 break; 1632 } 1633 m++; 1634 } 1635 } 1636 1637 /* Handle CSI SGR for 256 colours. */ 1638 static void 1639 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1640 { 1641 struct grid_cell *gc = &ictx->cell.cell; 1642 int c; 1643 1644 (*i)++; 1645 c = input_get(ictx, *i, 0, -1); 1646 if (c == -1) { 1647 if (fgbg == 38) 1648 gc->fg = 8; 1649 else if (fgbg == 48) 1650 gc->bg = 8; 1651 } else { 1652 if (fgbg == 38) 1653 gc->fg = c | COLOUR_FLAG_256; 1654 else if (fgbg == 48) 1655 gc->bg = c | COLOUR_FLAG_256; 1656 } 1657 } 1658 1659 /* Handle CSI SGR for RGB colours. */ 1660 static void 1661 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1662 { 1663 struct grid_cell *gc = &ictx->cell.cell; 1664 int r, g, b; 1665 1666 (*i)++; 1667 r = input_get(ictx, *i, 0, -1); 1668 if (r == -1 || r > 255) 1669 return; 1670 (*i)++; 1671 g = input_get(ictx, *i, 0, -1); 1672 if (g == -1 || g > 255) 1673 return; 1674 (*i)++; 1675 b = input_get(ictx, *i, 0, -1); 1676 if (b == -1 || b > 255) 1677 return; 1678 1679 if (fgbg == 38) 1680 gc->fg = colour_join_rgb(r, g, b); 1681 else if (fgbg == 48) 1682 gc->bg = colour_join_rgb(r, g, b); 1683 } 1684 1685 /* Handle CSI SGR. */ 1686 static void 1687 input_csi_dispatch_sgr(struct input_ctx *ictx) 1688 { 1689 struct grid_cell *gc = &ictx->cell.cell; 1690 u_int i; 1691 int n; 1692 1693 if (ictx->param_list_len == 0) { 1694 memcpy(gc, &grid_default_cell, sizeof *gc); 1695 return; 1696 } 1697 1698 for (i = 0; i < ictx->param_list_len; i++) { 1699 n = input_get(ictx, i, 0, 0); 1700 1701 if (n == 38 || n == 48) { 1702 i++; 1703 switch (input_get(ictx, i, 0, -1)) { 1704 case 2: 1705 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1706 break; 1707 case 5: 1708 input_csi_dispatch_sgr_256(ictx, n, &i); 1709 break; 1710 } 1711 continue; 1712 } 1713 1714 switch (n) { 1715 case 0: 1716 case 10: 1717 memcpy(gc, &grid_default_cell, sizeof *gc); 1718 break; 1719 case 1: 1720 gc->attr |= GRID_ATTR_BRIGHT; 1721 break; 1722 case 2: 1723 gc->attr |= GRID_ATTR_DIM; 1724 break; 1725 case 3: 1726 gc->attr |= GRID_ATTR_ITALICS; 1727 break; 1728 case 4: 1729 gc->attr |= GRID_ATTR_UNDERSCORE; 1730 break; 1731 case 5: 1732 gc->attr |= GRID_ATTR_BLINK; 1733 break; 1734 case 7: 1735 gc->attr |= GRID_ATTR_REVERSE; 1736 break; 1737 case 8: 1738 gc->attr |= GRID_ATTR_HIDDEN; 1739 break; 1740 case 22: 1741 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 1742 break; 1743 case 23: 1744 gc->attr &= ~GRID_ATTR_ITALICS; 1745 break; 1746 case 24: 1747 gc->attr &= ~GRID_ATTR_UNDERSCORE; 1748 break; 1749 case 25: 1750 gc->attr &= ~GRID_ATTR_BLINK; 1751 break; 1752 case 27: 1753 gc->attr &= ~GRID_ATTR_REVERSE; 1754 break; 1755 case 30: 1756 case 31: 1757 case 32: 1758 case 33: 1759 case 34: 1760 case 35: 1761 case 36: 1762 case 37: 1763 gc->fg = n - 30; 1764 break; 1765 case 39: 1766 gc->fg = 8; 1767 break; 1768 case 40: 1769 case 41: 1770 case 42: 1771 case 43: 1772 case 44: 1773 case 45: 1774 case 46: 1775 case 47: 1776 gc->bg = n - 40; 1777 break; 1778 case 49: 1779 gc->bg = 8; 1780 break; 1781 case 90: 1782 case 91: 1783 case 92: 1784 case 93: 1785 case 94: 1786 case 95: 1787 case 96: 1788 case 97: 1789 gc->fg = n; 1790 break; 1791 case 100: 1792 case 101: 1793 case 102: 1794 case 103: 1795 case 104: 1796 case 105: 1797 case 106: 1798 case 107: 1799 gc->bg = n - 10; 1800 break; 1801 } 1802 } 1803 } 1804 1805 /* DCS terminator (ST) received. */ 1806 static int 1807 input_dcs_dispatch(struct input_ctx *ictx) 1808 { 1809 const char prefix[] = "tmux;"; 1810 const u_int prefix_len = (sizeof prefix) - 1; 1811 1812 if (ictx->flags & INPUT_DISCARD) 1813 return (0); 1814 1815 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1816 1817 /* Check for tmux prefix. */ 1818 if (ictx->input_len >= prefix_len && 1819 strncmp(ictx->input_buf, prefix, prefix_len) == 0) { 1820 screen_write_rawstring(&ictx->ctx, 1821 ictx->input_buf + prefix_len, ictx->input_len - prefix_len); 1822 } 1823 1824 return (0); 1825 } 1826 1827 /* OSC string started. */ 1828 static void 1829 input_enter_osc(struct input_ctx *ictx) 1830 { 1831 log_debug("%s", __func__); 1832 1833 input_clear(ictx); 1834 } 1835 1836 /* OSC terminator (ST) received. */ 1837 static void 1838 input_exit_osc(struct input_ctx *ictx) 1839 { 1840 u_char *p = ictx->input_buf; 1841 u_int option; 1842 1843 if (ictx->flags & INPUT_DISCARD) 1844 return; 1845 if (ictx->input_len < 1 || *p < '0' || *p > '9') 1846 return; 1847 1848 log_debug("%s: \"%s\"", __func__, p); 1849 1850 option = 0; 1851 while (*p >= '0' && *p <= '9') 1852 option = option * 10 + *p++ - '0'; 1853 if (*p == ';') 1854 p++; 1855 1856 switch (option) { 1857 case 0: 1858 case 2: 1859 screen_set_title(ictx->ctx.s, p); 1860 server_status_window(ictx->wp->window); 1861 break; 1862 case 4: 1863 input_osc_4(ictx->wp, p); 1864 break; 1865 case 12: 1866 if (*p != '?') /* ? is colour request */ 1867 screen_set_cursor_colour(ictx->ctx.s, p); 1868 break; 1869 case 104: 1870 input_osc_104(ictx->wp, p); 1871 break; 1872 case 112: 1873 if (*p == '\0') /* no arguments allowed */ 1874 screen_set_cursor_colour(ictx->ctx.s, ""); 1875 break; 1876 default: 1877 log_debug("%s: unknown '%u'", __func__, option); 1878 break; 1879 } 1880 } 1881 1882 /* APC string started. */ 1883 static void 1884 input_enter_apc(struct input_ctx *ictx) 1885 { 1886 log_debug("%s", __func__); 1887 1888 input_clear(ictx); 1889 } 1890 1891 /* APC terminator (ST) received. */ 1892 static void 1893 input_exit_apc(struct input_ctx *ictx) 1894 { 1895 if (ictx->flags & INPUT_DISCARD) 1896 return; 1897 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1898 1899 screen_set_title(ictx->ctx.s, ictx->input_buf); 1900 server_status_window(ictx->wp->window); 1901 } 1902 1903 /* Rename string started. */ 1904 static void 1905 input_enter_rename(struct input_ctx *ictx) 1906 { 1907 log_debug("%s", __func__); 1908 1909 input_clear(ictx); 1910 } 1911 1912 /* Rename terminator (ST) received. */ 1913 static void 1914 input_exit_rename(struct input_ctx *ictx) 1915 { 1916 if (ictx->flags & INPUT_DISCARD) 1917 return; 1918 if (!options_get_number(ictx->wp->window->options, "allow-rename")) 1919 return; 1920 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1921 1922 window_set_name(ictx->wp->window, ictx->input_buf); 1923 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 1924 1925 server_status_window(ictx->wp->window); 1926 } 1927 1928 /* Open UTF-8 character. */ 1929 static int 1930 input_utf8_open(struct input_ctx *ictx) 1931 { 1932 struct utf8_data *ud = &ictx->utf8data; 1933 1934 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 1935 fatalx("UTF-8 open invalid %#x", ictx->ch); 1936 1937 log_debug("%s %hhu", __func__, ud->size); 1938 1939 return (0); 1940 } 1941 1942 /* Append to UTF-8 character. */ 1943 static int 1944 input_utf8_add(struct input_ctx *ictx) 1945 { 1946 struct utf8_data *ud = &ictx->utf8data; 1947 1948 if (utf8_append(ud, ictx->ch) != UTF8_MORE) 1949 fatalx("UTF-8 add invalid %#x", ictx->ch); 1950 1951 log_debug("%s", __func__); 1952 1953 return (0); 1954 } 1955 1956 /* Close UTF-8 string. */ 1957 static int 1958 input_utf8_close(struct input_ctx *ictx) 1959 { 1960 struct utf8_data *ud = &ictx->utf8data; 1961 1962 if (utf8_append(ud, ictx->ch) != UTF8_DONE) { 1963 /* 1964 * An error here could be invalid UTF-8 or it could be a 1965 * nonprintable character for which we can't get the 1966 * width. Drop it. 1967 */ 1968 return (0); 1969 } 1970 1971 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 1972 (int)ud->size, ud->data, ud->width); 1973 1974 utf8_copy(&ictx->cell.cell.data, ud); 1975 screen_write_cell(&ictx->ctx, &ictx->cell.cell); 1976 1977 return (0); 1978 } 1979 1980 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 1981 static void 1982 input_osc_4(struct window_pane *wp, const char *p) 1983 { 1984 char *copy, *s, *next = NULL; 1985 long idx; 1986 u_int r, g, b; 1987 1988 copy = s = xstrdup(p); 1989 while (s != NULL && *s != '\0') { 1990 idx = strtol(s, &next, 10); 1991 if (*next++ != ';') 1992 goto bad; 1993 if (idx < 0 || idx >= 0x100) 1994 goto bad; 1995 1996 s = strsep(&next, ";"); 1997 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 1998 s = next; 1999 continue; 2000 } 2001 2002 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2003 s = next; 2004 } 2005 2006 free(copy); 2007 return; 2008 2009 bad: 2010 log_debug("bad OSC 4: %s", p); 2011 free(copy); 2012 } 2013 2014 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2015 static void 2016 input_osc_104(struct window_pane *wp, const char *p) 2017 { 2018 char *copy, *s; 2019 long idx; 2020 2021 if (*p == '\0') { 2022 window_pane_reset_palette(wp); 2023 return; 2024 } 2025 2026 copy = s = xstrdup(p); 2027 while (*s != '\0') { 2028 idx = strtol(s, &s, 10); 2029 if (*s != '\0' && *s != ';') 2030 goto bad; 2031 if (idx < 0 || idx >= 0x100) 2032 goto bad; 2033 2034 window_pane_unset_palette(wp, idx); 2035 if (*s == ';') 2036 s++; 2037 } 2038 free(copy); 2039 return; 2040 2041 bad: 2042 log_debug("bad OSC 104: %s", p); 2043 free(copy); 2044 } 2045