1 /* $OpenBSD: input.c,v 1.157 2019/06/20 13:40:22 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 <netinet/in.h> 22 23 #include <resolv.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <time.h> 27 28 #include "tmux.h" 29 30 /* 31 * Based on the description by Paul Williams at: 32 * 33 * https://vt100.net/emu/dec_ansi_parser 34 * 35 * With the following changes: 36 * 37 * - 7-bit only. 38 * 39 * - Support for UTF-8. 40 * 41 * - OSC (but not APC) may be terminated by \007 as well as ST. 42 * 43 * - A state for APC similar to OSC. Some terminals appear to use this to set 44 * the title. 45 * 46 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 47 * pretty stupid but not supporting it is more trouble than it is worth. 48 * 49 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 50 * be passed to the underlying terminals. 51 */ 52 53 /* Input parser cell. */ 54 struct input_cell { 55 struct grid_cell cell; 56 int set; 57 int g0set; /* 1 if ACS */ 58 int g1set; /* 1 if ACS */ 59 }; 60 61 /* Input parser argument. */ 62 struct input_param { 63 enum { 64 INPUT_MISSING, 65 INPUT_NUMBER, 66 INPUT_STRING 67 } type; 68 union { 69 int num; 70 char *str; 71 }; 72 }; 73 74 /* Input parser context. */ 75 struct input_ctx { 76 struct window_pane *wp; 77 struct screen_write_ctx ctx; 78 79 struct input_cell cell; 80 81 struct input_cell old_cell; 82 u_int old_cx; 83 u_int old_cy; 84 int old_mode; 85 86 u_char interm_buf[4]; 87 size_t interm_len; 88 89 u_char param_buf[64]; 90 size_t param_len; 91 92 #define INPUT_BUF_START 32 93 #define INPUT_BUF_LIMIT 1048576 94 u_char *input_buf; 95 size_t input_len; 96 size_t input_space; 97 enum { 98 INPUT_END_ST, 99 INPUT_END_BEL 100 } input_end; 101 102 struct input_param param_list[24]; 103 u_int param_list_len; 104 105 struct utf8_data utf8data; 106 int utf8started; 107 108 int ch; 109 int last; 110 111 int flags; 112 #define INPUT_DISCARD 0x1 113 114 const struct input_state *state; 115 116 struct event timer; 117 118 /* 119 * All input received since we were last in the ground state. Sent to 120 * control clients on connection. 121 */ 122 struct evbuffer *since_ground; 123 }; 124 125 /* Helper functions. */ 126 struct input_transition; 127 static int input_split(struct input_ctx *); 128 static int input_get(struct input_ctx *, u_int, int, int); 129 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 130 static void input_set_state(struct window_pane *, 131 const struct input_transition *); 132 static void input_reset_cell(struct input_ctx *); 133 134 static void input_osc_4(struct input_ctx *, const char *); 135 static void input_osc_10(struct input_ctx *, const char *); 136 static void input_osc_11(struct input_ctx *, const char *); 137 static void input_osc_52(struct input_ctx *, const char *); 138 static void input_osc_104(struct input_ctx *, const char *); 139 140 /* Transition entry/exit handlers. */ 141 static void input_clear(struct input_ctx *); 142 static void input_ground(struct input_ctx *); 143 static void input_enter_dcs(struct input_ctx *); 144 static void input_enter_osc(struct input_ctx *); 145 static void input_exit_osc(struct input_ctx *); 146 static void input_enter_apc(struct input_ctx *); 147 static void input_exit_apc(struct input_ctx *); 148 static void input_enter_rename(struct input_ctx *); 149 static void input_exit_rename(struct input_ctx *); 150 151 /* Input state handlers. */ 152 static int input_print(struct input_ctx *); 153 static int input_intermediate(struct input_ctx *); 154 static int input_parameter(struct input_ctx *); 155 static int input_input(struct input_ctx *); 156 static int input_c0_dispatch(struct input_ctx *); 157 static int input_esc_dispatch(struct input_ctx *); 158 static int input_csi_dispatch(struct input_ctx *); 159 static void input_csi_dispatch_rm(struct input_ctx *); 160 static void input_csi_dispatch_rm_private(struct input_ctx *); 161 static void input_csi_dispatch_sm(struct input_ctx *); 162 static void input_csi_dispatch_sm_private(struct input_ctx *); 163 static void input_csi_dispatch_winops(struct input_ctx *); 164 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 165 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 166 static void input_csi_dispatch_sgr(struct input_ctx *); 167 static int input_dcs_dispatch(struct input_ctx *); 168 static int input_top_bit_set(struct input_ctx *); 169 static int input_end_bel(struct input_ctx *); 170 171 /* Command table comparison function. */ 172 static int input_table_compare(const void *, const void *); 173 174 /* Command table entry. */ 175 struct input_table_entry { 176 int ch; 177 const char *interm; 178 int type; 179 }; 180 181 /* Escape commands. */ 182 enum input_esc_type { 183 INPUT_ESC_DECALN, 184 INPUT_ESC_DECKPAM, 185 INPUT_ESC_DECKPNM, 186 INPUT_ESC_DECRC, 187 INPUT_ESC_DECSC, 188 INPUT_ESC_HTS, 189 INPUT_ESC_IND, 190 INPUT_ESC_NEL, 191 INPUT_ESC_RI, 192 INPUT_ESC_RIS, 193 INPUT_ESC_SCSG0_OFF, 194 INPUT_ESC_SCSG0_ON, 195 INPUT_ESC_SCSG1_OFF, 196 INPUT_ESC_SCSG1_ON, 197 INPUT_ESC_ST, 198 }; 199 200 /* Escape command table. */ 201 static const struct input_table_entry input_esc_table[] = { 202 { '0', "(", INPUT_ESC_SCSG0_ON }, 203 { '0', ")", INPUT_ESC_SCSG1_ON }, 204 { '7', "", INPUT_ESC_DECSC }, 205 { '8', "", INPUT_ESC_DECRC }, 206 { '8', "#", INPUT_ESC_DECALN }, 207 { '=', "", INPUT_ESC_DECKPAM }, 208 { '>', "", INPUT_ESC_DECKPNM }, 209 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 210 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 211 { 'D', "", INPUT_ESC_IND }, 212 { 'E', "", INPUT_ESC_NEL }, 213 { 'H', "", INPUT_ESC_HTS }, 214 { 'M', "", INPUT_ESC_RI }, 215 { '\\', "", INPUT_ESC_ST }, 216 { 'c', "", INPUT_ESC_RIS }, 217 }; 218 219 /* Control (CSI) commands. */ 220 enum input_csi_type { 221 INPUT_CSI_CBT, 222 INPUT_CSI_CNL, 223 INPUT_CSI_CPL, 224 INPUT_CSI_CUB, 225 INPUT_CSI_CUD, 226 INPUT_CSI_CUF, 227 INPUT_CSI_CUP, 228 INPUT_CSI_CUU, 229 INPUT_CSI_DA, 230 INPUT_CSI_DA_TWO, 231 INPUT_CSI_DCH, 232 INPUT_CSI_DECSCUSR, 233 INPUT_CSI_DECSTBM, 234 INPUT_CSI_DL, 235 INPUT_CSI_DSR, 236 INPUT_CSI_ECH, 237 INPUT_CSI_ED, 238 INPUT_CSI_EL, 239 INPUT_CSI_HPA, 240 INPUT_CSI_ICH, 241 INPUT_CSI_IL, 242 INPUT_CSI_RCP, 243 INPUT_CSI_REP, 244 INPUT_CSI_RM, 245 INPUT_CSI_RM_PRIVATE, 246 INPUT_CSI_SCP, 247 INPUT_CSI_SGR, 248 INPUT_CSI_SM, 249 INPUT_CSI_SM_PRIVATE, 250 INPUT_CSI_SU, 251 INPUT_CSI_TBC, 252 INPUT_CSI_VPA, 253 INPUT_CSI_WINOPS, 254 }; 255 256 /* Control (CSI) command table. */ 257 static const struct input_table_entry input_csi_table[] = { 258 { '@', "", INPUT_CSI_ICH }, 259 { 'A', "", INPUT_CSI_CUU }, 260 { 'B', "", INPUT_CSI_CUD }, 261 { 'C', "", INPUT_CSI_CUF }, 262 { 'D', "", INPUT_CSI_CUB }, 263 { 'E', "", INPUT_CSI_CNL }, 264 { 'F', "", INPUT_CSI_CPL }, 265 { 'G', "", INPUT_CSI_HPA }, 266 { 'H', "", INPUT_CSI_CUP }, 267 { 'J', "", INPUT_CSI_ED }, 268 { 'K', "", INPUT_CSI_EL }, 269 { 'L', "", INPUT_CSI_IL }, 270 { 'M', "", INPUT_CSI_DL }, 271 { 'P', "", INPUT_CSI_DCH }, 272 { 'S', "", INPUT_CSI_SU }, 273 { 'X', "", INPUT_CSI_ECH }, 274 { 'Z', "", INPUT_CSI_CBT }, 275 { '`', "", INPUT_CSI_HPA }, 276 { 'b', "", INPUT_CSI_REP }, 277 { 'c', "", INPUT_CSI_DA }, 278 { 'c', ">", INPUT_CSI_DA_TWO }, 279 { 'd', "", INPUT_CSI_VPA }, 280 { 'f', "", INPUT_CSI_CUP }, 281 { 'g', "", INPUT_CSI_TBC }, 282 { 'h', "", INPUT_CSI_SM }, 283 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 284 { 'l', "", INPUT_CSI_RM }, 285 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 286 { 'm', "", INPUT_CSI_SGR }, 287 { 'n', "", INPUT_CSI_DSR }, 288 { 'q', " ", INPUT_CSI_DECSCUSR }, 289 { 'r', "", INPUT_CSI_DECSTBM }, 290 { 's', "", INPUT_CSI_SCP }, 291 { 't', "", INPUT_CSI_WINOPS }, 292 { 'u', "", INPUT_CSI_RCP }, 293 }; 294 295 /* Input transition. */ 296 struct input_transition { 297 int first; 298 int last; 299 300 int (*handler)(struct input_ctx *); 301 const struct input_state *state; 302 }; 303 304 /* Input state. */ 305 struct input_state { 306 const char *name; 307 void (*enter)(struct input_ctx *); 308 void (*exit)(struct input_ctx *); 309 const struct input_transition *transitions; 310 }; 311 312 /* State transitions available from all states. */ 313 #define INPUT_STATE_ANYWHERE \ 314 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 315 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 316 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 317 318 /* Forward declarations of state tables. */ 319 static const struct input_transition input_state_ground_table[]; 320 static const struct input_transition input_state_esc_enter_table[]; 321 static const struct input_transition input_state_esc_intermediate_table[]; 322 static const struct input_transition input_state_csi_enter_table[]; 323 static const struct input_transition input_state_csi_parameter_table[]; 324 static const struct input_transition input_state_csi_intermediate_table[]; 325 static const struct input_transition input_state_csi_ignore_table[]; 326 static const struct input_transition input_state_dcs_enter_table[]; 327 static const struct input_transition input_state_dcs_parameter_table[]; 328 static const struct input_transition input_state_dcs_intermediate_table[]; 329 static const struct input_transition input_state_dcs_handler_table[]; 330 static const struct input_transition input_state_dcs_escape_table[]; 331 static const struct input_transition input_state_dcs_ignore_table[]; 332 static const struct input_transition input_state_osc_string_table[]; 333 static const struct input_transition input_state_apc_string_table[]; 334 static const struct input_transition input_state_rename_string_table[]; 335 static const struct input_transition input_state_consume_st_table[]; 336 337 /* ground state definition. */ 338 static const struct input_state input_state_ground = { 339 "ground", 340 input_ground, NULL, 341 input_state_ground_table 342 }; 343 344 /* esc_enter state definition. */ 345 static const struct input_state input_state_esc_enter = { 346 "esc_enter", 347 input_clear, NULL, 348 input_state_esc_enter_table 349 }; 350 351 /* esc_intermediate state definition. */ 352 static const struct input_state input_state_esc_intermediate = { 353 "esc_intermediate", 354 NULL, NULL, 355 input_state_esc_intermediate_table 356 }; 357 358 /* csi_enter state definition. */ 359 static const struct input_state input_state_csi_enter = { 360 "csi_enter", 361 input_clear, NULL, 362 input_state_csi_enter_table 363 }; 364 365 /* csi_parameter state definition. */ 366 static const struct input_state input_state_csi_parameter = { 367 "csi_parameter", 368 NULL, NULL, 369 input_state_csi_parameter_table 370 }; 371 372 /* csi_intermediate state definition. */ 373 static const struct input_state input_state_csi_intermediate = { 374 "csi_intermediate", 375 NULL, NULL, 376 input_state_csi_intermediate_table 377 }; 378 379 /* csi_ignore state definition. */ 380 static const struct input_state input_state_csi_ignore = { 381 "csi_ignore", 382 NULL, NULL, 383 input_state_csi_ignore_table 384 }; 385 386 /* dcs_enter state definition. */ 387 static const struct input_state input_state_dcs_enter = { 388 "dcs_enter", 389 input_enter_dcs, NULL, 390 input_state_dcs_enter_table 391 }; 392 393 /* dcs_parameter state definition. */ 394 static const struct input_state input_state_dcs_parameter = { 395 "dcs_parameter", 396 NULL, NULL, 397 input_state_dcs_parameter_table 398 }; 399 400 /* dcs_intermediate state definition. */ 401 static const struct input_state input_state_dcs_intermediate = { 402 "dcs_intermediate", 403 NULL, NULL, 404 input_state_dcs_intermediate_table 405 }; 406 407 /* dcs_handler state definition. */ 408 static const struct input_state input_state_dcs_handler = { 409 "dcs_handler", 410 NULL, NULL, 411 input_state_dcs_handler_table 412 }; 413 414 /* dcs_escape state definition. */ 415 static const struct input_state input_state_dcs_escape = { 416 "dcs_escape", 417 NULL, NULL, 418 input_state_dcs_escape_table 419 }; 420 421 /* dcs_ignore state definition. */ 422 static const struct input_state input_state_dcs_ignore = { 423 "dcs_ignore", 424 NULL, NULL, 425 input_state_dcs_ignore_table 426 }; 427 428 /* osc_string state definition. */ 429 static const struct input_state input_state_osc_string = { 430 "osc_string", 431 input_enter_osc, input_exit_osc, 432 input_state_osc_string_table 433 }; 434 435 /* apc_string state definition. */ 436 static const struct input_state input_state_apc_string = { 437 "apc_string", 438 input_enter_apc, input_exit_apc, 439 input_state_apc_string_table 440 }; 441 442 /* rename_string state definition. */ 443 static const struct input_state input_state_rename_string = { 444 "rename_string", 445 input_enter_rename, input_exit_rename, 446 input_state_rename_string_table 447 }; 448 449 /* consume_st state definition. */ 450 static const struct input_state input_state_consume_st = { 451 "consume_st", 452 input_enter_rename, NULL, /* rename also waits for ST */ 453 input_state_consume_st_table 454 }; 455 456 /* ground state table. */ 457 static const struct input_transition input_state_ground_table[] = { 458 INPUT_STATE_ANYWHERE, 459 460 { 0x00, 0x17, input_c0_dispatch, NULL }, 461 { 0x19, 0x19, input_c0_dispatch, NULL }, 462 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 463 { 0x20, 0x7e, input_print, NULL }, 464 { 0x7f, 0x7f, NULL, NULL }, 465 { 0x80, 0xff, input_top_bit_set, NULL }, 466 467 { -1, -1, NULL, NULL } 468 }; 469 470 /* esc_enter state table. */ 471 static const struct input_transition input_state_esc_enter_table[] = { 472 INPUT_STATE_ANYWHERE, 473 474 { 0x00, 0x17, input_c0_dispatch, NULL }, 475 { 0x19, 0x19, input_c0_dispatch, NULL }, 476 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 477 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 478 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 479 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 480 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 481 { 0x58, 0x58, NULL, &input_state_consume_st }, 482 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 483 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 484 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 485 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 486 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 487 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 488 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 489 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 490 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 491 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 492 { 0x7f, 0xff, NULL, NULL }, 493 494 { -1, -1, NULL, NULL } 495 }; 496 497 /* esc_intermediate state table. */ 498 static const struct input_transition input_state_esc_intermediate_table[] = { 499 INPUT_STATE_ANYWHERE, 500 501 { 0x00, 0x17, input_c0_dispatch, NULL }, 502 { 0x19, 0x19, input_c0_dispatch, NULL }, 503 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 504 { 0x20, 0x2f, input_intermediate, NULL }, 505 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 506 { 0x7f, 0xff, NULL, NULL }, 507 508 { -1, -1, NULL, NULL } 509 }; 510 511 /* csi_enter state table. */ 512 static const struct input_transition input_state_csi_enter_table[] = { 513 INPUT_STATE_ANYWHERE, 514 515 { 0x00, 0x17, input_c0_dispatch, NULL }, 516 { 0x19, 0x19, input_c0_dispatch, NULL }, 517 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 518 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 519 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 520 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 521 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 522 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 523 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 524 { 0x7f, 0xff, NULL, NULL }, 525 526 { -1, -1, NULL, NULL } 527 }; 528 529 /* csi_parameter state table. */ 530 static const struct input_transition input_state_csi_parameter_table[] = { 531 INPUT_STATE_ANYWHERE, 532 533 { 0x00, 0x17, input_c0_dispatch, NULL }, 534 { 0x19, 0x19, input_c0_dispatch, NULL }, 535 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 536 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 537 { 0x30, 0x39, input_parameter, NULL }, 538 { 0x3a, 0x3a, input_parameter, NULL }, 539 { 0x3b, 0x3b, input_parameter, NULL }, 540 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 541 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 542 { 0x7f, 0xff, NULL, NULL }, 543 544 { -1, -1, NULL, NULL } 545 }; 546 547 /* csi_intermediate state table. */ 548 static const struct input_transition input_state_csi_intermediate_table[] = { 549 INPUT_STATE_ANYWHERE, 550 551 { 0x00, 0x17, input_c0_dispatch, NULL }, 552 { 0x19, 0x19, input_c0_dispatch, NULL }, 553 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 554 { 0x20, 0x2f, input_intermediate, NULL }, 555 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 556 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 557 { 0x7f, 0xff, NULL, NULL }, 558 559 { -1, -1, NULL, NULL } 560 }; 561 562 /* csi_ignore state table. */ 563 static const struct input_transition input_state_csi_ignore_table[] = { 564 INPUT_STATE_ANYWHERE, 565 566 { 0x00, 0x17, input_c0_dispatch, NULL }, 567 { 0x19, 0x19, input_c0_dispatch, NULL }, 568 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 569 { 0x20, 0x3f, NULL, NULL }, 570 { 0x40, 0x7e, NULL, &input_state_ground }, 571 { 0x7f, 0xff, NULL, NULL }, 572 573 { -1, -1, NULL, NULL } 574 }; 575 576 /* dcs_enter state table. */ 577 static const struct input_transition input_state_dcs_enter_table[] = { 578 INPUT_STATE_ANYWHERE, 579 580 { 0x00, 0x17, NULL, NULL }, 581 { 0x19, 0x19, NULL, NULL }, 582 { 0x1c, 0x1f, NULL, NULL }, 583 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 584 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 585 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 586 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 587 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 588 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 589 { 0x7f, 0xff, NULL, NULL }, 590 591 { -1, -1, NULL, NULL } 592 }; 593 594 /* dcs_parameter state table. */ 595 static const struct input_transition input_state_dcs_parameter_table[] = { 596 INPUT_STATE_ANYWHERE, 597 598 { 0x00, 0x17, NULL, NULL }, 599 { 0x19, 0x19, NULL, NULL }, 600 { 0x1c, 0x1f, NULL, NULL }, 601 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 602 { 0x30, 0x39, input_parameter, NULL }, 603 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 604 { 0x3b, 0x3b, input_parameter, NULL }, 605 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 606 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 607 { 0x7f, 0xff, NULL, NULL }, 608 609 { -1, -1, NULL, NULL } 610 }; 611 612 /* dcs_intermediate state table. */ 613 static const struct input_transition input_state_dcs_intermediate_table[] = { 614 INPUT_STATE_ANYWHERE, 615 616 { 0x00, 0x17, NULL, NULL }, 617 { 0x19, 0x19, NULL, NULL }, 618 { 0x1c, 0x1f, NULL, NULL }, 619 { 0x20, 0x2f, input_intermediate, NULL }, 620 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 621 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 622 { 0x7f, 0xff, NULL, NULL }, 623 624 { -1, -1, NULL, NULL } 625 }; 626 627 /* dcs_handler state table. */ 628 static const struct input_transition input_state_dcs_handler_table[] = { 629 /* No INPUT_STATE_ANYWHERE */ 630 631 { 0x00, 0x1a, input_input, NULL }, 632 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 633 { 0x1c, 0xff, input_input, NULL }, 634 635 { -1, -1, NULL, NULL } 636 }; 637 638 /* dcs_escape state table. */ 639 static const struct input_transition input_state_dcs_escape_table[] = { 640 /* No INPUT_STATE_ANYWHERE */ 641 642 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 643 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 644 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 645 646 { -1, -1, NULL, NULL } 647 }; 648 649 /* dcs_ignore state table. */ 650 static const struct input_transition input_state_dcs_ignore_table[] = { 651 INPUT_STATE_ANYWHERE, 652 653 { 0x00, 0x17, NULL, NULL }, 654 { 0x19, 0x19, NULL, NULL }, 655 { 0x1c, 0x1f, NULL, NULL }, 656 { 0x20, 0xff, NULL, NULL }, 657 658 { -1, -1, NULL, NULL } 659 }; 660 661 /* osc_string state table. */ 662 static const struct input_transition input_state_osc_string_table[] = { 663 INPUT_STATE_ANYWHERE, 664 665 { 0x00, 0x06, NULL, NULL }, 666 { 0x07, 0x07, input_end_bel, &input_state_ground }, 667 { 0x08, 0x17, NULL, NULL }, 668 { 0x19, 0x19, NULL, NULL }, 669 { 0x1c, 0x1f, NULL, NULL }, 670 { 0x20, 0xff, input_input, NULL }, 671 672 { -1, -1, NULL, NULL } 673 }; 674 675 /* apc_string state table. */ 676 static const struct input_transition input_state_apc_string_table[] = { 677 INPUT_STATE_ANYWHERE, 678 679 { 0x00, 0x17, NULL, NULL }, 680 { 0x19, 0x19, NULL, NULL }, 681 { 0x1c, 0x1f, NULL, NULL }, 682 { 0x20, 0xff, input_input, NULL }, 683 684 { -1, -1, NULL, NULL } 685 }; 686 687 /* rename_string state table. */ 688 static const struct input_transition input_state_rename_string_table[] = { 689 INPUT_STATE_ANYWHERE, 690 691 { 0x00, 0x17, NULL, NULL }, 692 { 0x19, 0x19, NULL, NULL }, 693 { 0x1c, 0x1f, NULL, NULL }, 694 { 0x20, 0xff, input_input, NULL }, 695 696 { -1, -1, NULL, NULL } 697 }; 698 699 /* consume_st state table. */ 700 static const struct input_transition input_state_consume_st_table[] = { 701 INPUT_STATE_ANYWHERE, 702 703 { 0x00, 0x17, NULL, NULL }, 704 { 0x19, 0x19, NULL, NULL }, 705 { 0x1c, 0x1f, NULL, NULL }, 706 { 0x20, 0xff, NULL, NULL }, 707 708 { -1, -1, NULL, NULL } 709 }; 710 711 /* Input table compare. */ 712 static int 713 input_table_compare(const void *key, const void *value) 714 { 715 const struct input_ctx *ictx = key; 716 const struct input_table_entry *entry = value; 717 718 if (ictx->ch != entry->ch) 719 return (ictx->ch - entry->ch); 720 return (strcmp(ictx->interm_buf, entry->interm)); 721 } 722 723 /* 724 * Timer - if this expires then have been waiting for a terminator for too 725 * long, so reset to ground. 726 */ 727 static void 728 input_timer_callback(__unused int fd, __unused short events, void *arg) 729 { 730 struct input_ctx *ictx = arg; 731 struct window_pane *wp = ictx->wp; 732 733 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 734 input_reset(wp, 0); 735 } 736 737 /* Start the timer. */ 738 static void 739 input_start_timer(struct input_ctx *ictx) 740 { 741 struct timeval tv = { .tv_usec = 100000 }; 742 743 event_del(&ictx->timer); 744 event_add(&ictx->timer, &tv); 745 } 746 747 /* Reset cell state to default. */ 748 static void 749 input_reset_cell(struct input_ctx *ictx) 750 { 751 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 752 ictx->cell.set = 0; 753 ictx->cell.g0set = ictx->cell.g1set = 0; 754 755 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 756 ictx->old_cx = 0; 757 ictx->old_cy = 0; 758 } 759 760 /* Save screen state. */ 761 static void 762 input_save_state(struct input_ctx *ictx) 763 { 764 struct screen_write_ctx *sctx = &ictx->ctx; 765 struct screen *s = sctx->s; 766 767 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 768 ictx->old_cx = s->cx; 769 ictx->old_cy = s->cy; 770 ictx->old_mode = s->mode; 771 } 772 773 static void 774 input_restore_state(struct input_ctx *ictx) 775 { 776 struct screen_write_ctx *sctx = &ictx->ctx; 777 778 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 779 if (ictx->old_mode & MODE_ORIGIN) 780 screen_write_mode_set(sctx, MODE_ORIGIN); 781 else 782 screen_write_mode_clear(sctx, MODE_ORIGIN); 783 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 784 } 785 786 /* Initialise input parser. */ 787 void 788 input_init(struct window_pane *wp) 789 { 790 struct input_ctx *ictx; 791 792 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 793 794 ictx->input_space = INPUT_BUF_START; 795 ictx->input_buf = xmalloc(INPUT_BUF_START); 796 797 ictx->since_ground = evbuffer_new(); 798 if (ictx->since_ground == NULL) 799 fatalx("out of memory"); 800 801 evtimer_set(&ictx->timer, input_timer_callback, ictx); 802 803 input_reset(wp, 0); 804 } 805 806 /* Destroy input parser. */ 807 void 808 input_free(struct window_pane *wp) 809 { 810 struct input_ctx *ictx = wp->ictx; 811 u_int i; 812 813 for (i = 0; i < ictx->param_list_len; i++) { 814 if (ictx->param_list[i].type == INPUT_STRING) 815 free(ictx->param_list[i].str); 816 } 817 818 event_del(&ictx->timer); 819 820 free(ictx->input_buf); 821 evbuffer_free(ictx->since_ground); 822 823 free(ictx); 824 wp->ictx = NULL; 825 } 826 827 /* Reset input state and clear screen. */ 828 void 829 input_reset(struct window_pane *wp, int clear) 830 { 831 struct input_ctx *ictx = wp->ictx; 832 struct screen_write_ctx *sctx = &ictx->ctx; 833 834 input_reset_cell(ictx); 835 836 if (clear) { 837 if (TAILQ_EMPTY(&wp->modes)) 838 screen_write_start(sctx, wp, &wp->base); 839 else 840 screen_write_start(sctx, NULL, &wp->base); 841 screen_write_reset(sctx); 842 screen_write_stop(sctx); 843 } 844 845 input_clear(ictx); 846 847 ictx->last = -1; 848 849 ictx->state = &input_state_ground; 850 ictx->flags = 0; 851 } 852 853 /* Return pending data. */ 854 struct evbuffer * 855 input_pending(struct window_pane *wp) 856 { 857 return (wp->ictx->since_ground); 858 } 859 860 /* Change input state. */ 861 static void 862 input_set_state(struct window_pane *wp, const struct input_transition *itr) 863 { 864 struct input_ctx *ictx = wp->ictx; 865 866 if (ictx->state->exit != NULL) 867 ictx->state->exit(ictx); 868 ictx->state = itr->state; 869 if (ictx->state->enter != NULL) 870 ictx->state->enter(ictx); 871 } 872 873 /* Parse input. */ 874 void 875 input_parse(struct window_pane *wp) 876 { 877 struct evbuffer *evb = wp->event->input; 878 879 input_parse_buffer(wp, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb)); 880 evbuffer_drain(evb, EVBUFFER_LENGTH(evb)); 881 } 882 883 /* Parse given input. */ 884 void 885 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 886 { 887 struct input_ctx *ictx = wp->ictx; 888 struct screen_write_ctx *sctx = &ictx->ctx; 889 const struct input_transition *itr; 890 size_t off = 0; 891 892 if (len == 0) 893 return; 894 895 window_update_activity(wp->window); 896 wp->flags |= PANE_CHANGED; 897 notify_input(wp, buf, len); 898 899 /* 900 * Open the screen. Use NULL wp if there is a mode set as don't want to 901 * update the tty. 902 */ 903 if (TAILQ_EMPTY(&wp->modes)) 904 screen_write_start(sctx, wp, &wp->base); 905 else 906 screen_write_start(sctx, NULL, &wp->base); 907 ictx->wp = wp; 908 909 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 910 ictx->state->name, len, (int)len, buf); 911 912 /* Parse the input. */ 913 while (off < len) { 914 ictx->ch = buf[off++]; 915 916 /* Find the transition. */ 917 itr = ictx->state->transitions; 918 while (itr->first != -1 && itr->last != -1) { 919 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 920 break; 921 itr++; 922 } 923 if (itr->first == -1 || itr->last == -1) { 924 /* No transition? Eh? */ 925 fatalx("no transition from state"); 926 } 927 928 /* 929 * Any state except print stops the current collection. This is 930 * an optimization to avoid checking if the attributes have 931 * changed for every character. It will stop unnecessarily for 932 * sequences that don't make a terminal change, but they should 933 * be the minority. 934 */ 935 if (itr->handler != input_print) 936 screen_write_collect_end(sctx); 937 938 /* 939 * Execute the handler, if any. Don't switch state if it 940 * returns non-zero. 941 */ 942 if (itr->handler != NULL && itr->handler(ictx) != 0) 943 continue; 944 945 /* And switch state, if necessary. */ 946 if (itr->state != NULL) 947 input_set_state(wp, itr); 948 949 /* If not in ground state, save input. */ 950 if (ictx->state != &input_state_ground) 951 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 952 } 953 954 /* Close the screen. */ 955 screen_write_stop(sctx); 956 } 957 958 /* Split the parameter list (if any). */ 959 static int 960 input_split(struct input_ctx *ictx) 961 { 962 const char *errstr; 963 char *ptr, *out; 964 struct input_param *ip; 965 u_int i; 966 967 for (i = 0; i < ictx->param_list_len; i++) { 968 if (ictx->param_list[i].type == INPUT_STRING) 969 free(ictx->param_list[i].str); 970 } 971 ictx->param_list_len = 0; 972 973 if (ictx->param_len == 0) 974 return (0); 975 ip = &ictx->param_list[0]; 976 977 ptr = ictx->param_buf; 978 while ((out = strsep(&ptr, ";")) != NULL) { 979 if (*out == '\0') 980 ip->type = INPUT_MISSING; 981 else { 982 if (strchr(out, ':') != NULL) { 983 ip->type = INPUT_STRING; 984 ip->str = xstrdup(out); 985 } else { 986 ip->type = INPUT_NUMBER; 987 ip->num = strtonum(out, 0, INT_MAX, &errstr); 988 if (errstr != NULL) 989 return (-1); 990 } 991 } 992 ip = &ictx->param_list[++ictx->param_list_len]; 993 if (ictx->param_list_len == nitems(ictx->param_list)) 994 return (-1); 995 } 996 997 for (i = 0; i < ictx->param_list_len; i++) { 998 ip = &ictx->param_list[i]; 999 if (ip->type == INPUT_MISSING) 1000 log_debug("parameter %u: missing", i); 1001 else if (ip->type == INPUT_STRING) 1002 log_debug("parameter %u: string %s", i, ip->str); 1003 else if (ip->type == INPUT_NUMBER) 1004 log_debug("parameter %u: number %d", i, ip->num); 1005 } 1006 1007 return (0); 1008 } 1009 1010 /* Get an argument or return default value. */ 1011 static int 1012 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1013 { 1014 struct input_param *ip; 1015 int retval; 1016 1017 if (validx >= ictx->param_list_len) 1018 return (defval); 1019 ip = &ictx->param_list[validx]; 1020 if (ip->type == INPUT_MISSING) 1021 return (defval); 1022 if (ip->type == INPUT_STRING) 1023 return (-1); 1024 retval = ip->num; 1025 if (retval < minval) 1026 return (minval); 1027 return (retval); 1028 } 1029 1030 /* Reply to terminal query. */ 1031 static void 1032 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1033 { 1034 va_list ap; 1035 char *reply; 1036 1037 va_start(ap, fmt); 1038 xvasprintf(&reply, fmt, ap); 1039 va_end(ap); 1040 1041 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 1042 free(reply); 1043 } 1044 1045 /* Clear saved state. */ 1046 static void 1047 input_clear(struct input_ctx *ictx) 1048 { 1049 event_del(&ictx->timer); 1050 1051 *ictx->interm_buf = '\0'; 1052 ictx->interm_len = 0; 1053 1054 *ictx->param_buf = '\0'; 1055 ictx->param_len = 0; 1056 1057 *ictx->input_buf = '\0'; 1058 ictx->input_len = 0; 1059 1060 ictx->input_end = INPUT_END_ST; 1061 1062 ictx->flags &= ~INPUT_DISCARD; 1063 } 1064 1065 /* Reset for ground state. */ 1066 static void 1067 input_ground(struct input_ctx *ictx) 1068 { 1069 event_del(&ictx->timer); 1070 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1071 1072 if (ictx->input_space > INPUT_BUF_START) { 1073 ictx->input_space = INPUT_BUF_START; 1074 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1075 } 1076 } 1077 1078 /* Output this character to the screen. */ 1079 static int 1080 input_print(struct input_ctx *ictx) 1081 { 1082 struct screen_write_ctx *sctx = &ictx->ctx; 1083 int set; 1084 1085 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1086 1087 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1088 if (set == 1) 1089 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1090 else 1091 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1092 1093 utf8_set(&ictx->cell.cell.data, ictx->ch); 1094 screen_write_collect_add(sctx, &ictx->cell.cell); 1095 ictx->last = ictx->ch; 1096 1097 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1098 1099 return (0); 1100 } 1101 1102 /* Collect intermediate string. */ 1103 static int 1104 input_intermediate(struct input_ctx *ictx) 1105 { 1106 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1107 ictx->flags |= INPUT_DISCARD; 1108 else { 1109 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1110 ictx->interm_buf[ictx->interm_len] = '\0'; 1111 } 1112 1113 return (0); 1114 } 1115 1116 /* Collect parameter string. */ 1117 static int 1118 input_parameter(struct input_ctx *ictx) 1119 { 1120 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1121 ictx->flags |= INPUT_DISCARD; 1122 else { 1123 ictx->param_buf[ictx->param_len++] = ictx->ch; 1124 ictx->param_buf[ictx->param_len] = '\0'; 1125 } 1126 1127 return (0); 1128 } 1129 1130 /* Collect input string. */ 1131 static int 1132 input_input(struct input_ctx *ictx) 1133 { 1134 size_t available; 1135 1136 available = ictx->input_space; 1137 while (ictx->input_len + 1 >= available) { 1138 available *= 2; 1139 if (available > INPUT_BUF_LIMIT) { 1140 ictx->flags |= INPUT_DISCARD; 1141 return (0); 1142 } 1143 ictx->input_buf = xrealloc(ictx->input_buf, available); 1144 ictx->input_space = available; 1145 } 1146 ictx->input_buf[ictx->input_len++] = ictx->ch; 1147 ictx->input_buf[ictx->input_len] = '\0'; 1148 1149 return (0); 1150 } 1151 1152 /* Execute C0 control sequence. */ 1153 static int 1154 input_c0_dispatch(struct input_ctx *ictx) 1155 { 1156 struct screen_write_ctx *sctx = &ictx->ctx; 1157 struct window_pane *wp = ictx->wp; 1158 struct screen *s = sctx->s; 1159 1160 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1161 1162 log_debug("%s: '%c'", __func__, ictx->ch); 1163 1164 switch (ictx->ch) { 1165 case '\000': /* NUL */ 1166 break; 1167 case '\007': /* BEL */ 1168 alerts_queue(wp->window, WINDOW_BELL); 1169 break; 1170 case '\010': /* BS */ 1171 screen_write_backspace(sctx); 1172 break; 1173 case '\011': /* HT */ 1174 /* Don't tab beyond the end of the line. */ 1175 if (s->cx >= screen_size_x(s) - 1) 1176 break; 1177 1178 /* Find the next tab point, or use the last column if none. */ 1179 do { 1180 s->cx++; 1181 if (bit_test(s->tabs, s->cx)) 1182 break; 1183 } while (s->cx < screen_size_x(s) - 1); 1184 break; 1185 case '\012': /* LF */ 1186 case '\013': /* VT */ 1187 case '\014': /* FF */ 1188 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1189 if (s->mode & MODE_CRLF) 1190 screen_write_carriagereturn(sctx); 1191 break; 1192 case '\015': /* CR */ 1193 screen_write_carriagereturn(sctx); 1194 break; 1195 case '\016': /* SO */ 1196 ictx->cell.set = 1; 1197 break; 1198 case '\017': /* SI */ 1199 ictx->cell.set = 0; 1200 break; 1201 default: 1202 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1203 break; 1204 } 1205 1206 ictx->last = -1; 1207 return (0); 1208 } 1209 1210 /* Execute escape sequence. */ 1211 static int 1212 input_esc_dispatch(struct input_ctx *ictx) 1213 { 1214 struct screen_write_ctx *sctx = &ictx->ctx; 1215 struct screen *s = sctx->s; 1216 struct input_table_entry *entry; 1217 1218 if (ictx->flags & INPUT_DISCARD) 1219 return (0); 1220 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1221 1222 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1223 sizeof input_esc_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_ESC_RIS: 1231 window_pane_reset_palette(ictx->wp); 1232 input_reset_cell(ictx); 1233 screen_write_reset(sctx); 1234 break; 1235 case INPUT_ESC_IND: 1236 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1237 break; 1238 case INPUT_ESC_NEL: 1239 screen_write_carriagereturn(sctx); 1240 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1241 break; 1242 case INPUT_ESC_HTS: 1243 if (s->cx < screen_size_x(s)) 1244 bit_set(s->tabs, s->cx); 1245 break; 1246 case INPUT_ESC_RI: 1247 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1248 break; 1249 case INPUT_ESC_DECKPAM: 1250 screen_write_mode_set(sctx, MODE_KKEYPAD); 1251 break; 1252 case INPUT_ESC_DECKPNM: 1253 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1254 break; 1255 case INPUT_ESC_DECSC: 1256 input_save_state(ictx); 1257 break; 1258 case INPUT_ESC_DECRC: 1259 input_restore_state(ictx); 1260 break; 1261 case INPUT_ESC_DECALN: 1262 screen_write_alignmenttest(sctx); 1263 break; 1264 case INPUT_ESC_SCSG0_ON: 1265 ictx->cell.g0set = 1; 1266 break; 1267 case INPUT_ESC_SCSG0_OFF: 1268 ictx->cell.g0set = 0; 1269 break; 1270 case INPUT_ESC_SCSG1_ON: 1271 ictx->cell.g1set = 1; 1272 break; 1273 case INPUT_ESC_SCSG1_OFF: 1274 ictx->cell.g1set = 0; 1275 break; 1276 case INPUT_ESC_ST: 1277 /* ST terminates OSC but the state transition already did it. */ 1278 break; 1279 } 1280 1281 ictx->last = -1; 1282 return (0); 1283 } 1284 1285 /* Execute control sequence. */ 1286 static int 1287 input_csi_dispatch(struct input_ctx *ictx) 1288 { 1289 struct screen_write_ctx *sctx = &ictx->ctx; 1290 struct screen *s = sctx->s; 1291 struct input_table_entry *entry; 1292 int i, n, m; 1293 u_int cx, bg = ictx->cell.cell.bg; 1294 1295 if (ictx->flags & INPUT_DISCARD) 1296 return (0); 1297 1298 log_debug("%s: '%c' \"%s\" \"%s\"", 1299 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1300 1301 if (input_split(ictx) != 0) 1302 return (0); 1303 1304 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1305 sizeof input_csi_table[0], input_table_compare); 1306 if (entry == NULL) { 1307 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1308 return (0); 1309 } 1310 1311 switch (entry->type) { 1312 case INPUT_CSI_CBT: 1313 /* Find the previous tab point, n times. */ 1314 cx = s->cx; 1315 if (cx > screen_size_x(s) - 1) 1316 cx = screen_size_x(s) - 1; 1317 n = input_get(ictx, 0, 1, 1); 1318 if (n == -1) 1319 break; 1320 while (cx > 0 && n-- > 0) { 1321 do 1322 cx--; 1323 while (cx > 0 && !bit_test(s->tabs, cx)); 1324 } 1325 s->cx = cx; 1326 break; 1327 case INPUT_CSI_CUB: 1328 n = input_get(ictx, 0, 1, 1); 1329 if (n != -1) 1330 screen_write_cursorleft(sctx, n); 1331 break; 1332 case INPUT_CSI_CUD: 1333 n = input_get(ictx, 0, 1, 1); 1334 if (n != -1) 1335 screen_write_cursordown(sctx, n); 1336 break; 1337 case INPUT_CSI_CUF: 1338 n = input_get(ictx, 0, 1, 1); 1339 if (n != -1) 1340 screen_write_cursorright(sctx, n); 1341 break; 1342 case INPUT_CSI_CUP: 1343 n = input_get(ictx, 0, 1, 1); 1344 m = input_get(ictx, 1, 1, 1); 1345 if (n != -1 && m != -1) 1346 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1347 break; 1348 case INPUT_CSI_WINOPS: 1349 input_csi_dispatch_winops(ictx); 1350 break; 1351 case INPUT_CSI_CUU: 1352 n = input_get(ictx, 0, 1, 1); 1353 if (n != -1) 1354 screen_write_cursorup(sctx, n); 1355 break; 1356 case INPUT_CSI_CNL: 1357 n = input_get(ictx, 0, 1, 1); 1358 if (n != -1) { 1359 screen_write_carriagereturn(sctx); 1360 screen_write_cursordown(sctx, n); 1361 } 1362 break; 1363 case INPUT_CSI_CPL: 1364 n = input_get(ictx, 0, 1, 1); 1365 if (n != -1) { 1366 screen_write_carriagereturn(sctx); 1367 screen_write_cursorup(sctx, n); 1368 } 1369 break; 1370 case INPUT_CSI_DA: 1371 switch (input_get(ictx, 0, 0, 0)) { 1372 case -1: 1373 break; 1374 case 0: 1375 input_reply(ictx, "\033[?1;2c"); 1376 break; 1377 default: 1378 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1379 break; 1380 } 1381 break; 1382 case INPUT_CSI_DA_TWO: 1383 switch (input_get(ictx, 0, 0, 0)) { 1384 case -1: 1385 break; 1386 case 0: 1387 input_reply(ictx, "\033[>84;0;0c"); 1388 break; 1389 default: 1390 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1391 break; 1392 } 1393 break; 1394 case INPUT_CSI_ECH: 1395 n = input_get(ictx, 0, 1, 1); 1396 if (n != -1) 1397 screen_write_clearcharacter(sctx, n, bg); 1398 break; 1399 case INPUT_CSI_DCH: 1400 n = input_get(ictx, 0, 1, 1); 1401 if (n != -1) 1402 screen_write_deletecharacter(sctx, n, bg); 1403 break; 1404 case INPUT_CSI_DECSTBM: 1405 n = input_get(ictx, 0, 1, 1); 1406 m = input_get(ictx, 1, 1, screen_size_y(s)); 1407 if (n != -1 && m != -1) 1408 screen_write_scrollregion(sctx, n - 1, m - 1); 1409 break; 1410 case INPUT_CSI_DL: 1411 n = input_get(ictx, 0, 1, 1); 1412 if (n != -1) 1413 screen_write_deleteline(sctx, n, bg); 1414 break; 1415 case INPUT_CSI_DSR: 1416 switch (input_get(ictx, 0, 0, 0)) { 1417 case -1: 1418 break; 1419 case 5: 1420 input_reply(ictx, "\033[0n"); 1421 break; 1422 case 6: 1423 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1424 break; 1425 default: 1426 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1427 break; 1428 } 1429 break; 1430 case INPUT_CSI_ED: 1431 switch (input_get(ictx, 0, 0, 0)) { 1432 case -1: 1433 break; 1434 case 0: 1435 screen_write_clearendofscreen(sctx, bg); 1436 break; 1437 case 1: 1438 screen_write_clearstartofscreen(sctx, bg); 1439 break; 1440 case 2: 1441 screen_write_clearscreen(sctx, bg); 1442 break; 1443 case 3: 1444 if (input_get(ictx, 1, 0, 0) == 0) { 1445 /* 1446 * Linux console extension to clear history 1447 * (for example before locking the screen). 1448 */ 1449 screen_write_clearhistory(sctx); 1450 } 1451 break; 1452 default: 1453 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1454 break; 1455 } 1456 break; 1457 case INPUT_CSI_EL: 1458 switch (input_get(ictx, 0, 0, 0)) { 1459 case -1: 1460 break; 1461 case 0: 1462 screen_write_clearendofline(sctx, bg); 1463 break; 1464 case 1: 1465 screen_write_clearstartofline(sctx, bg); 1466 break; 1467 case 2: 1468 screen_write_clearline(sctx, bg); 1469 break; 1470 default: 1471 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1472 break; 1473 } 1474 break; 1475 case INPUT_CSI_HPA: 1476 n = input_get(ictx, 0, 1, 1); 1477 if (n != -1) 1478 screen_write_cursormove(sctx, n - 1, -1, 1); 1479 break; 1480 case INPUT_CSI_ICH: 1481 n = input_get(ictx, 0, 1, 1); 1482 if (n != -1) 1483 screen_write_insertcharacter(sctx, n, bg); 1484 break; 1485 case INPUT_CSI_IL: 1486 n = input_get(ictx, 0, 1, 1); 1487 if (n != -1) 1488 screen_write_insertline(sctx, n, bg); 1489 break; 1490 case INPUT_CSI_REP: 1491 n = input_get(ictx, 0, 1, 1); 1492 if (n == -1) 1493 break; 1494 1495 if (ictx->last == -1) 1496 break; 1497 ictx->ch = ictx->last; 1498 1499 for (i = 0; i < n; i++) 1500 input_print(ictx); 1501 break; 1502 case INPUT_CSI_RCP: 1503 input_restore_state(ictx); 1504 break; 1505 case INPUT_CSI_RM: 1506 input_csi_dispatch_rm(ictx); 1507 break; 1508 case INPUT_CSI_RM_PRIVATE: 1509 input_csi_dispatch_rm_private(ictx); 1510 break; 1511 case INPUT_CSI_SCP: 1512 input_save_state(ictx); 1513 break; 1514 case INPUT_CSI_SGR: 1515 input_csi_dispatch_sgr(ictx); 1516 break; 1517 case INPUT_CSI_SM: 1518 input_csi_dispatch_sm(ictx); 1519 break; 1520 case INPUT_CSI_SM_PRIVATE: 1521 input_csi_dispatch_sm_private(ictx); 1522 break; 1523 case INPUT_CSI_SU: 1524 n = input_get(ictx, 0, 1, 1); 1525 if (n != -1) 1526 screen_write_scrollup(sctx, n, bg); 1527 break; 1528 case INPUT_CSI_TBC: 1529 switch (input_get(ictx, 0, 0, 0)) { 1530 case -1: 1531 break; 1532 case 0: 1533 if (s->cx < screen_size_x(s)) 1534 bit_clear(s->tabs, s->cx); 1535 break; 1536 case 3: 1537 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1538 break; 1539 default: 1540 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1541 break; 1542 } 1543 break; 1544 case INPUT_CSI_VPA: 1545 n = input_get(ictx, 0, 1, 1); 1546 if (n != -1) 1547 screen_write_cursormove(sctx, -1, n - 1, 1); 1548 break; 1549 case INPUT_CSI_DECSCUSR: 1550 n = input_get(ictx, 0, 0, 0); 1551 if (n != -1) 1552 screen_set_cursor_style(s, n); 1553 break; 1554 } 1555 1556 ictx->last = -1; 1557 return (0); 1558 } 1559 1560 /* Handle CSI RM. */ 1561 static void 1562 input_csi_dispatch_rm(struct input_ctx *ictx) 1563 { 1564 struct screen_write_ctx *sctx = &ictx->ctx; 1565 u_int i; 1566 1567 for (i = 0; i < ictx->param_list_len; i++) { 1568 switch (input_get(ictx, i, 0, -1)) { 1569 case -1: 1570 break; 1571 case 4: /* IRM */ 1572 screen_write_mode_clear(sctx, MODE_INSERT); 1573 break; 1574 case 34: 1575 screen_write_mode_set(sctx, MODE_BLINKING); 1576 break; 1577 default: 1578 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1579 break; 1580 } 1581 } 1582 } 1583 1584 /* Handle CSI private RM. */ 1585 static void 1586 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1587 { 1588 struct screen_write_ctx *sctx = &ictx->ctx; 1589 struct window_pane *wp = ictx->wp; 1590 u_int i; 1591 1592 for (i = 0; i < ictx->param_list_len; i++) { 1593 switch (input_get(ictx, i, 0, -1)) { 1594 case -1: 1595 break; 1596 case 1: /* DECCKM */ 1597 screen_write_mode_clear(sctx, MODE_KCURSOR); 1598 break; 1599 case 3: /* DECCOLM */ 1600 screen_write_cursormove(sctx, 0, 0, 1); 1601 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1602 break; 1603 case 6: /* DECOM */ 1604 screen_write_mode_clear(sctx, MODE_ORIGIN); 1605 screen_write_cursormove(sctx, 0, 0, 1); 1606 break; 1607 case 7: /* DECAWM */ 1608 screen_write_mode_clear(sctx, MODE_WRAP); 1609 break; 1610 case 12: 1611 screen_write_mode_clear(sctx, MODE_BLINKING); 1612 break; 1613 case 25: /* TCEM */ 1614 screen_write_mode_clear(sctx, MODE_CURSOR); 1615 break; 1616 case 1000: 1617 case 1001: 1618 case 1002: 1619 case 1003: 1620 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1621 break; 1622 case 1004: 1623 screen_write_mode_clear(sctx, MODE_FOCUSON); 1624 break; 1625 case 1005: 1626 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1627 break; 1628 case 1006: 1629 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1630 break; 1631 case 47: 1632 case 1047: 1633 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1634 break; 1635 case 1049: 1636 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1637 break; 1638 case 2004: 1639 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1640 break; 1641 default: 1642 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1643 break; 1644 } 1645 } 1646 } 1647 1648 /* Handle CSI SM. */ 1649 static void 1650 input_csi_dispatch_sm(struct input_ctx *ictx) 1651 { 1652 struct screen_write_ctx *sctx = &ictx->ctx; 1653 u_int i; 1654 1655 for (i = 0; i < ictx->param_list_len; i++) { 1656 switch (input_get(ictx, i, 0, -1)) { 1657 case -1: 1658 break; 1659 case 4: /* IRM */ 1660 screen_write_mode_set(sctx, MODE_INSERT); 1661 break; 1662 case 34: 1663 screen_write_mode_clear(sctx, MODE_BLINKING); 1664 break; 1665 default: 1666 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1667 break; 1668 } 1669 } 1670 } 1671 1672 /* Handle CSI private SM. */ 1673 static void 1674 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1675 { 1676 struct screen_write_ctx *sctx = &ictx->ctx; 1677 struct window_pane *wp = ictx->wp; 1678 u_int i; 1679 1680 for (i = 0; i < ictx->param_list_len; i++) { 1681 switch (input_get(ictx, i, 0, -1)) { 1682 case -1: 1683 break; 1684 case 1: /* DECCKM */ 1685 screen_write_mode_set(sctx, MODE_KCURSOR); 1686 break; 1687 case 3: /* DECCOLM */ 1688 screen_write_cursormove(sctx, 0, 0, 1); 1689 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1690 break; 1691 case 6: /* DECOM */ 1692 screen_write_mode_set(sctx, MODE_ORIGIN); 1693 screen_write_cursormove(sctx, 0, 0, 1); 1694 break; 1695 case 7: /* DECAWM */ 1696 screen_write_mode_set(sctx, MODE_WRAP); 1697 break; 1698 case 12: 1699 screen_write_mode_set(sctx, MODE_BLINKING); 1700 break; 1701 case 25: /* TCEM */ 1702 screen_write_mode_set(sctx, MODE_CURSOR); 1703 break; 1704 case 1000: 1705 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1706 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1707 break; 1708 case 1002: 1709 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1710 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1711 break; 1712 case 1003: 1713 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1714 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1715 break; 1716 case 1004: 1717 if (sctx->s->mode & MODE_FOCUSON) 1718 break; 1719 screen_write_mode_set(sctx, MODE_FOCUSON); 1720 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1721 break; 1722 case 1005: 1723 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1724 break; 1725 case 1006: 1726 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1727 break; 1728 case 47: 1729 case 1047: 1730 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1731 break; 1732 case 1049: 1733 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1734 break; 1735 case 2004: 1736 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1737 break; 1738 default: 1739 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1740 break; 1741 } 1742 } 1743 } 1744 1745 /* Handle CSI window operations. */ 1746 static void 1747 input_csi_dispatch_winops(struct input_ctx *ictx) 1748 { 1749 struct screen_write_ctx *sctx = &ictx->ctx; 1750 struct window_pane *wp = ictx->wp; 1751 int n, m; 1752 1753 m = 0; 1754 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1755 switch (n) { 1756 case 1: 1757 case 2: 1758 case 5: 1759 case 6: 1760 case 7: 1761 case 11: 1762 case 13: 1763 case 14: 1764 case 19: 1765 case 20: 1766 case 21: 1767 case 24: 1768 break; 1769 case 3: 1770 case 4: 1771 case 8: 1772 m++; 1773 if (input_get(ictx, m, 0, -1) == -1) 1774 return; 1775 /* FALLTHROUGH */ 1776 case 9: 1777 case 10: 1778 m++; 1779 if (input_get(ictx, m, 0, -1) == -1) 1780 return; 1781 break; 1782 case 22: 1783 m++; 1784 switch (input_get(ictx, m, 0, -1)) { 1785 case -1: 1786 return; 1787 case 0: 1788 case 2: 1789 screen_push_title(sctx->s); 1790 break; 1791 } 1792 break; 1793 case 23: 1794 m++; 1795 switch (input_get(ictx, m, 0, -1)) { 1796 case -1: 1797 return; 1798 case 0: 1799 case 2: 1800 screen_pop_title(sctx->s); 1801 server_status_window(ictx->wp->window); 1802 break; 1803 } 1804 break; 1805 case 18: 1806 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1807 break; 1808 default: 1809 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1810 break; 1811 } 1812 m++; 1813 } 1814 } 1815 1816 /* Helper for 256 colour SGR. */ 1817 static int 1818 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1819 { 1820 struct grid_cell *gc = &ictx->cell.cell; 1821 1822 if (c == -1 || c > 255) { 1823 if (fgbg == 38) 1824 gc->fg = 8; 1825 else if (fgbg == 48) 1826 gc->bg = 8; 1827 } else { 1828 if (fgbg == 38) 1829 gc->fg = c | COLOUR_FLAG_256; 1830 else if (fgbg == 48) 1831 gc->bg = c | COLOUR_FLAG_256; 1832 } 1833 return (1); 1834 } 1835 1836 /* Handle CSI SGR for 256 colours. */ 1837 static void 1838 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1839 { 1840 int c; 1841 1842 c = input_get(ictx, (*i) + 1, 0, -1); 1843 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1844 (*i)++; 1845 } 1846 1847 /* Helper for RGB colour SGR. */ 1848 static int 1849 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1850 int b) 1851 { 1852 struct grid_cell *gc = &ictx->cell.cell; 1853 1854 if (r == -1 || r > 255) 1855 return (0); 1856 if (g == -1 || g > 255) 1857 return (0); 1858 if (b == -1 || b > 255) 1859 return (0); 1860 1861 if (fgbg == 38) 1862 gc->fg = colour_join_rgb(r, g, b); 1863 else if (fgbg == 48) 1864 gc->bg = colour_join_rgb(r, g, b); 1865 return (1); 1866 } 1867 1868 /* Handle CSI SGR for RGB colours. */ 1869 static void 1870 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1871 { 1872 int r, g, b; 1873 1874 r = input_get(ictx, (*i) + 1, 0, -1); 1875 g = input_get(ictx, (*i) + 2, 0, -1); 1876 b = input_get(ictx, (*i) + 3, 0, -1); 1877 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1878 (*i) += 3; 1879 } 1880 1881 /* Handle CSI SGR with a ISO parameter. */ 1882 static void 1883 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1884 { 1885 struct grid_cell *gc = &ictx->cell.cell; 1886 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1887 int p[8]; 1888 u_int n; 1889 const char *errstr; 1890 1891 for (n = 0; n < nitems(p); n++) 1892 p[n] = -1; 1893 n = 0; 1894 1895 ptr = copy = xstrdup(s); 1896 while ((out = strsep(&ptr, ":")) != NULL) { 1897 if (*out != '\0') { 1898 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1899 if (errstr != NULL || n == nitems(p)) { 1900 free(copy); 1901 return; 1902 } 1903 } else 1904 n++; 1905 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1906 } 1907 free(copy); 1908 1909 if (n == 0) 1910 return; 1911 if (p[0] == 4) { 1912 if (n != 2) 1913 return; 1914 switch (p[1]) { 1915 case 0: 1916 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1917 break; 1918 case 1: 1919 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1920 gc->attr |= GRID_ATTR_UNDERSCORE; 1921 break; 1922 case 2: 1923 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1924 gc->attr |= GRID_ATTR_UNDERSCORE_2; 1925 break; 1926 case 3: 1927 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1928 gc->attr |= GRID_ATTR_UNDERSCORE_3; 1929 break; 1930 case 4: 1931 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1932 gc->attr |= GRID_ATTR_UNDERSCORE_4; 1933 break; 1934 case 5: 1935 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1936 gc->attr |= GRID_ATTR_UNDERSCORE_5; 1937 break; 1938 } 1939 return; 1940 } 1941 if (n < 2 || (p[0] != 38 && p[0] != 48)) 1942 return; 1943 switch (p[1]) { 1944 case 2: 1945 if (n < 3) 1946 break; 1947 if (n == 5) 1948 i = 2; 1949 else 1950 i = 3; 1951 if (n < i + 3) 1952 break; 1953 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 1954 p[i + 2]); 1955 break; 1956 case 5: 1957 if (n < 3) 1958 break; 1959 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 1960 break; 1961 } 1962 } 1963 1964 /* Handle CSI SGR. */ 1965 static void 1966 input_csi_dispatch_sgr(struct input_ctx *ictx) 1967 { 1968 struct grid_cell *gc = &ictx->cell.cell; 1969 u_int i; 1970 int n; 1971 1972 if (ictx->param_list_len == 0) { 1973 memcpy(gc, &grid_default_cell, sizeof *gc); 1974 return; 1975 } 1976 1977 for (i = 0; i < ictx->param_list_len; i++) { 1978 if (ictx->param_list[i].type == INPUT_STRING) { 1979 input_csi_dispatch_sgr_colon(ictx, i); 1980 continue; 1981 } 1982 n = input_get(ictx, i, 0, 0); 1983 if (n == -1) 1984 continue; 1985 1986 if (n == 38 || n == 48) { 1987 i++; 1988 switch (input_get(ictx, i, 0, -1)) { 1989 case 2: 1990 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1991 break; 1992 case 5: 1993 input_csi_dispatch_sgr_256(ictx, n, &i); 1994 break; 1995 } 1996 continue; 1997 } 1998 1999 switch (n) { 2000 case 0: 2001 memcpy(gc, &grid_default_cell, sizeof *gc); 2002 break; 2003 case 1: 2004 gc->attr |= GRID_ATTR_BRIGHT; 2005 break; 2006 case 2: 2007 gc->attr |= GRID_ATTR_DIM; 2008 break; 2009 case 3: 2010 gc->attr |= GRID_ATTR_ITALICS; 2011 break; 2012 case 4: 2013 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2014 gc->attr |= GRID_ATTR_UNDERSCORE; 2015 break; 2016 case 5: 2017 gc->attr |= GRID_ATTR_BLINK; 2018 break; 2019 case 7: 2020 gc->attr |= GRID_ATTR_REVERSE; 2021 break; 2022 case 8: 2023 gc->attr |= GRID_ATTR_HIDDEN; 2024 break; 2025 case 9: 2026 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2027 break; 2028 case 22: 2029 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2030 break; 2031 case 23: 2032 gc->attr &= ~GRID_ATTR_ITALICS; 2033 break; 2034 case 24: 2035 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2036 break; 2037 case 25: 2038 gc->attr &= ~GRID_ATTR_BLINK; 2039 break; 2040 case 27: 2041 gc->attr &= ~GRID_ATTR_REVERSE; 2042 break; 2043 case 28: 2044 gc->attr &= ~GRID_ATTR_HIDDEN; 2045 break; 2046 case 29: 2047 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2048 break; 2049 case 30: 2050 case 31: 2051 case 32: 2052 case 33: 2053 case 34: 2054 case 35: 2055 case 36: 2056 case 37: 2057 gc->fg = n - 30; 2058 break; 2059 case 39: 2060 gc->fg = 8; 2061 break; 2062 case 40: 2063 case 41: 2064 case 42: 2065 case 43: 2066 case 44: 2067 case 45: 2068 case 46: 2069 case 47: 2070 gc->bg = n - 40; 2071 break; 2072 case 49: 2073 gc->bg = 8; 2074 break; 2075 case 53: 2076 gc->attr |= GRID_ATTR_OVERLINE; 2077 break; 2078 case 55: 2079 gc->attr &= ~GRID_ATTR_OVERLINE; 2080 break; 2081 case 90: 2082 case 91: 2083 case 92: 2084 case 93: 2085 case 94: 2086 case 95: 2087 case 96: 2088 case 97: 2089 gc->fg = n; 2090 break; 2091 case 100: 2092 case 101: 2093 case 102: 2094 case 103: 2095 case 104: 2096 case 105: 2097 case 106: 2098 case 107: 2099 gc->bg = n - 10; 2100 break; 2101 } 2102 } 2103 } 2104 2105 /* End of input with BEL. */ 2106 static int 2107 input_end_bel(struct input_ctx *ictx) 2108 { 2109 log_debug("%s", __func__); 2110 2111 ictx->input_end = INPUT_END_BEL; 2112 2113 return (0); 2114 } 2115 2116 /* DCS string started. */ 2117 static void 2118 input_enter_dcs(struct input_ctx *ictx) 2119 { 2120 log_debug("%s", __func__); 2121 2122 input_clear(ictx); 2123 input_start_timer(ictx); 2124 ictx->last = -1; 2125 } 2126 2127 /* DCS terminator (ST) received. */ 2128 static int 2129 input_dcs_dispatch(struct input_ctx *ictx) 2130 { 2131 struct screen_write_ctx *sctx = &ictx->ctx; 2132 u_char *buf = ictx->input_buf; 2133 size_t len = ictx->input_len; 2134 const char prefix[] = "tmux;"; 2135 const u_int prefixlen = (sizeof prefix) - 1; 2136 2137 if (ictx->flags & INPUT_DISCARD) 2138 return (0); 2139 2140 log_debug("%s: \"%s\"", __func__, buf); 2141 2142 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2143 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2144 2145 return (0); 2146 } 2147 2148 /* OSC string started. */ 2149 static void 2150 input_enter_osc(struct input_ctx *ictx) 2151 { 2152 log_debug("%s", __func__); 2153 2154 input_clear(ictx); 2155 input_start_timer(ictx); 2156 ictx->last = -1; 2157 } 2158 2159 /* OSC terminator (ST) received. */ 2160 static void 2161 input_exit_osc(struct input_ctx *ictx) 2162 { 2163 struct screen_write_ctx *sctx = &ictx->ctx; 2164 u_char *p = ictx->input_buf; 2165 u_int option; 2166 2167 if (ictx->flags & INPUT_DISCARD) 2168 return; 2169 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2170 return; 2171 2172 log_debug("%s: \"%s\" (end %s)", __func__, p, 2173 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2174 2175 option = 0; 2176 while (*p >= '0' && *p <= '9') 2177 option = option * 10 + *p++ - '0'; 2178 if (*p == ';') 2179 p++; 2180 2181 switch (option) { 2182 case 0: 2183 case 2: 2184 if (utf8_isvalid(p)) { 2185 screen_set_title(sctx->s, p); 2186 server_status_window(ictx->wp->window); 2187 } 2188 break; 2189 case 4: 2190 input_osc_4(ictx, p); 2191 break; 2192 case 10: 2193 input_osc_10(ictx, p); 2194 break; 2195 case 11: 2196 input_osc_11(ictx, p); 2197 break; 2198 case 12: 2199 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2200 screen_set_cursor_colour(sctx->s, p); 2201 break; 2202 case 52: 2203 input_osc_52(ictx, p); 2204 break; 2205 case 104: 2206 input_osc_104(ictx, p); 2207 break; 2208 case 112: 2209 if (*p == '\0') /* no arguments allowed */ 2210 screen_set_cursor_colour(sctx->s, ""); 2211 break; 2212 default: 2213 log_debug("%s: unknown '%u'", __func__, option); 2214 break; 2215 } 2216 } 2217 2218 /* APC string started. */ 2219 static void 2220 input_enter_apc(struct input_ctx *ictx) 2221 { 2222 log_debug("%s", __func__); 2223 2224 input_clear(ictx); 2225 input_start_timer(ictx); 2226 ictx->last = -1; 2227 } 2228 2229 /* APC terminator (ST) received. */ 2230 static void 2231 input_exit_apc(struct input_ctx *ictx) 2232 { 2233 struct screen_write_ctx *sctx = &ictx->ctx; 2234 2235 if (ictx->flags & INPUT_DISCARD) 2236 return; 2237 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2238 2239 if (!utf8_isvalid(ictx->input_buf)) 2240 return; 2241 screen_set_title(sctx->s, ictx->input_buf); 2242 server_status_window(ictx->wp->window); 2243 } 2244 2245 /* Rename string started. */ 2246 static void 2247 input_enter_rename(struct input_ctx *ictx) 2248 { 2249 log_debug("%s", __func__); 2250 2251 input_clear(ictx); 2252 input_start_timer(ictx); 2253 ictx->last = -1; 2254 } 2255 2256 /* Rename terminator (ST) received. */ 2257 static void 2258 input_exit_rename(struct input_ctx *ictx) 2259 { 2260 if (ictx->flags & INPUT_DISCARD) 2261 return; 2262 if (!options_get_number(ictx->wp->options, "allow-rename")) 2263 return; 2264 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2265 2266 if (!utf8_isvalid(ictx->input_buf)) 2267 return; 2268 window_set_name(ictx->wp->window, ictx->input_buf); 2269 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2270 server_status_window(ictx->wp->window); 2271 } 2272 2273 /* Open UTF-8 character. */ 2274 static int 2275 input_top_bit_set(struct input_ctx *ictx) 2276 { 2277 struct screen_write_ctx *sctx = &ictx->ctx; 2278 struct utf8_data *ud = &ictx->utf8data; 2279 2280 ictx->last = -1; 2281 2282 if (!ictx->utf8started) { 2283 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2284 return (0); 2285 ictx->utf8started = 1; 2286 return (0); 2287 } 2288 2289 switch (utf8_append(ud, ictx->ch)) { 2290 case UTF8_MORE: 2291 return (0); 2292 case UTF8_ERROR: 2293 ictx->utf8started = 0; 2294 return (0); 2295 case UTF8_DONE: 2296 break; 2297 } 2298 ictx->utf8started = 0; 2299 2300 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2301 (int)ud->size, ud->data, ud->width); 2302 2303 utf8_copy(&ictx->cell.cell.data, ud); 2304 screen_write_collect_add(sctx, &ictx->cell.cell); 2305 2306 return (0); 2307 } 2308 2309 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2310 static void 2311 input_osc_4(struct input_ctx *ictx, const char *p) 2312 { 2313 struct window_pane *wp = ictx->wp; 2314 char *copy, *s, *next = NULL; 2315 long idx; 2316 u_int r, g, b; 2317 2318 copy = s = xstrdup(p); 2319 while (s != NULL && *s != '\0') { 2320 idx = strtol(s, &next, 10); 2321 if (*next++ != ';') 2322 goto bad; 2323 if (idx < 0 || idx >= 0x100) 2324 goto bad; 2325 2326 s = strsep(&next, ";"); 2327 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2328 s = next; 2329 continue; 2330 } 2331 2332 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2333 s = next; 2334 } 2335 2336 free(copy); 2337 return; 2338 2339 bad: 2340 log_debug("bad OSC 4: %s", p); 2341 free(copy); 2342 } 2343 2344 /* Handle the OSC 10 sequence for setting foreground colour. */ 2345 static void 2346 input_osc_10(struct input_ctx *ictx, const char *p) 2347 { 2348 struct window_pane *wp = ictx->wp; 2349 u_int r, g, b; 2350 char tmp[16]; 2351 2352 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2353 goto bad; 2354 xsnprintf(tmp, sizeof tmp, "fg=#%02x%02x%02x", r, g, b); 2355 options_set_style(wp->options, "window-style", 1, tmp); 2356 options_set_style(wp->options, "window-active-style", 1, tmp); 2357 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2358 2359 return; 2360 2361 bad: 2362 log_debug("bad OSC 10: %s", p); 2363 } 2364 2365 /* Handle the OSC 11 sequence for setting background colour. */ 2366 static void 2367 input_osc_11(struct input_ctx *ictx, const char *p) 2368 { 2369 struct window_pane *wp = ictx->wp; 2370 u_int r, g, b; 2371 char tmp[16]; 2372 2373 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2374 goto bad; 2375 xsnprintf(tmp, sizeof tmp, "bg=#%02x%02x%02x", r, g, b); 2376 options_set_style(wp->options, "window-style", 1, tmp); 2377 options_set_style(wp->options, "window-active-style", 1, tmp); 2378 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2379 2380 return; 2381 2382 bad: 2383 log_debug("bad OSC 11: %s", p); 2384 } 2385 2386 /* Handle the OSC 52 sequence for setting the clipboard. */ 2387 static void 2388 input_osc_52(struct input_ctx *ictx, const char *p) 2389 { 2390 struct window_pane *wp = ictx->wp; 2391 char *end; 2392 const char *buf; 2393 size_t len; 2394 u_char *out; 2395 int outlen, state; 2396 struct screen_write_ctx ctx; 2397 struct paste_buffer *pb; 2398 2399 state = options_get_number(global_options, "set-clipboard"); 2400 if (state != 2) 2401 return; 2402 2403 if ((end = strchr(p, ';')) == NULL) 2404 return; 2405 end++; 2406 if (*end == '\0') 2407 return; 2408 log_debug("%s: %s", __func__, end); 2409 2410 if (strcmp(end, "?") == 0) { 2411 if ((pb = paste_get_top(NULL)) != NULL) { 2412 buf = paste_buffer_data(pb, &len); 2413 outlen = 4 * ((len + 2) / 3) + 1; 2414 out = xmalloc(outlen); 2415 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2416 free(out); 2417 return; 2418 } 2419 } else { 2420 outlen = 0; 2421 out = NULL; 2422 } 2423 bufferevent_write(wp->event, "\033]52;;", 6); 2424 if (outlen != 0) 2425 bufferevent_write(wp->event, out, outlen); 2426 if (ictx->input_end == INPUT_END_BEL) 2427 bufferevent_write(wp->event, "\007", 1); 2428 else 2429 bufferevent_write(wp->event, "\033\\", 2); 2430 free(out); 2431 return; 2432 } 2433 2434 len = (strlen(end) / 4) * 3; 2435 if (len == 0) 2436 return; 2437 2438 out = xmalloc(len); 2439 if ((outlen = b64_pton(end, out, len)) == -1) { 2440 free(out); 2441 return; 2442 } 2443 2444 screen_write_start(&ctx, wp, NULL); 2445 screen_write_setselection(&ctx, out, outlen); 2446 screen_write_stop(&ctx); 2447 notify_pane("pane-set-clipboard", wp); 2448 2449 paste_add(NULL, out, outlen); 2450 } 2451 2452 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2453 static void 2454 input_osc_104(struct input_ctx *ictx, const char *p) 2455 { 2456 struct window_pane *wp = ictx->wp; 2457 char *copy, *s; 2458 long idx; 2459 2460 if (*p == '\0') { 2461 window_pane_reset_palette(wp); 2462 return; 2463 } 2464 2465 copy = s = xstrdup(p); 2466 while (*s != '\0') { 2467 idx = strtol(s, &s, 10); 2468 if (*s != '\0' && *s != ';') 2469 goto bad; 2470 if (idx < 0 || idx >= 0x100) 2471 goto bad; 2472 2473 window_pane_unset_palette(wp, idx); 2474 if (*s == ';') 2475 s++; 2476 } 2477 free(copy); 2478 return; 2479 2480 bad: 2481 log_debug("bad OSC 104: %s", p); 2482 free(copy); 2483 } 2484