input.c revision 1.85
1/* $OpenBSD: input.c,v 1.85 2015/09/01 19:50:09 nicm Exp $ */ 2 3/* 4 * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> 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. */ 51struct 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. */ 59struct 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. */ 100struct input_transition; 101int input_split(struct input_ctx *); 102int input_get(struct input_ctx *, u_int, int, int); 103void input_reply(struct input_ctx *, const char *, ...); 104void input_set_state(struct window_pane *, const struct input_transition *); 105void input_reset_cell(struct input_ctx *); 106 107/* Transition entry/exit handlers. */ 108void input_clear(struct input_ctx *); 109void input_ground(struct input_ctx *); 110void input_enter_osc(struct input_ctx *); 111void input_exit_osc(struct input_ctx *); 112void input_enter_apc(struct input_ctx *); 113void input_exit_apc(struct input_ctx *); 114void input_enter_rename(struct input_ctx *); 115void input_exit_rename(struct input_ctx *); 116 117/* Input state handlers. */ 118int input_print(struct input_ctx *); 119int input_intermediate(struct input_ctx *); 120int input_parameter(struct input_ctx *); 121int input_input(struct input_ctx *); 122int input_c0_dispatch(struct input_ctx *); 123int input_esc_dispatch(struct input_ctx *); 124int input_csi_dispatch(struct input_ctx *); 125void input_csi_dispatch_rm(struct input_ctx *); 126void input_csi_dispatch_rm_private(struct input_ctx *); 127void input_csi_dispatch_sm(struct input_ctx *); 128void input_csi_dispatch_sm_private(struct input_ctx *); 129void input_csi_dispatch_winops(struct input_ctx *); 130void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 131void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 132void input_csi_dispatch_sgr(struct input_ctx *); 133int input_dcs_dispatch(struct input_ctx *); 134int input_utf8_open(struct input_ctx *); 135int input_utf8_add(struct input_ctx *); 136int input_utf8_close(struct input_ctx *); 137 138/* Command table comparison function. */ 139int input_table_compare(const void *, const void *); 140 141/* Command table entry. */ 142struct input_table_entry { 143 int ch; 144 const char *interm; 145 int type; 146}; 147 148/* Escape commands. */ 149enum input_esc_type { 150 INPUT_ESC_DECALN, 151 INPUT_ESC_DECKPAM, 152 INPUT_ESC_DECKPNM, 153 INPUT_ESC_DECRC, 154 INPUT_ESC_DECSC, 155 INPUT_ESC_HTS, 156 INPUT_ESC_IND, 157 INPUT_ESC_NEL, 158 INPUT_ESC_RI, 159 INPUT_ESC_RIS, 160 INPUT_ESC_SCSG0_OFF, 161 INPUT_ESC_SCSG0_ON, 162 INPUT_ESC_SCSG1_OFF, 163 INPUT_ESC_SCSG1_ON, 164}; 165 166/* Escape command table. */ 167const struct input_table_entry input_esc_table[] = { 168 { '0', "(", INPUT_ESC_SCSG0_ON }, 169 { '0', ")", INPUT_ESC_SCSG1_ON }, 170 { '7', "", INPUT_ESC_DECSC }, 171 { '8', "", INPUT_ESC_DECRC }, 172 { '8', "#", INPUT_ESC_DECALN }, 173 { '=', "", INPUT_ESC_DECKPAM }, 174 { '>', "", INPUT_ESC_DECKPNM }, 175 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 176 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 177 { 'D', "", INPUT_ESC_IND }, 178 { 'E', "", INPUT_ESC_NEL }, 179 { 'H', "", INPUT_ESC_HTS }, 180 { 'M', "", INPUT_ESC_RI }, 181 { 'c', "", INPUT_ESC_RIS }, 182}; 183 184/* Control (CSI) commands. */ 185enum input_csi_type { 186 INPUT_CSI_CBT, 187 INPUT_CSI_CNL, 188 INPUT_CSI_CPL, 189 INPUT_CSI_CUB, 190 INPUT_CSI_CUD, 191 INPUT_CSI_CUF, 192 INPUT_CSI_CUP, 193 INPUT_CSI_CUU, 194 INPUT_CSI_DA, 195 INPUT_CSI_DA_TWO, 196 INPUT_CSI_DCH, 197 INPUT_CSI_DECSCUSR, 198 INPUT_CSI_DECSTBM, 199 INPUT_CSI_DL, 200 INPUT_CSI_DSR, 201 INPUT_CSI_ECH, 202 INPUT_CSI_ED, 203 INPUT_CSI_EL, 204 INPUT_CSI_HPA, 205 INPUT_CSI_ICH, 206 INPUT_CSI_IL, 207 INPUT_CSI_RCP, 208 INPUT_CSI_RM, 209 INPUT_CSI_RM_PRIVATE, 210 INPUT_CSI_SCP, 211 INPUT_CSI_SGR, 212 INPUT_CSI_SM, 213 INPUT_CSI_SM_PRIVATE, 214 INPUT_CSI_TBC, 215 INPUT_CSI_VPA, 216 INPUT_CSI_WINOPS, 217}; 218 219/* Control (CSI) command table. */ 220const struct input_table_entry input_csi_table[] = { 221 { '@', "", INPUT_CSI_ICH }, 222 { 'A', "", INPUT_CSI_CUU }, 223 { 'B', "", INPUT_CSI_CUD }, 224 { 'C', "", INPUT_CSI_CUF }, 225 { 'D', "", INPUT_CSI_CUB }, 226 { 'E', "", INPUT_CSI_CNL }, 227 { 'F', "", INPUT_CSI_CPL }, 228 { 'G', "", INPUT_CSI_HPA }, 229 { 'H', "", INPUT_CSI_CUP }, 230 { 'J', "", INPUT_CSI_ED }, 231 { 'K', "", INPUT_CSI_EL }, 232 { 'L', "", INPUT_CSI_IL }, 233 { 'M', "", INPUT_CSI_DL }, 234 { 'P', "", INPUT_CSI_DCH }, 235 { 'X', "", INPUT_CSI_ECH }, 236 { 'Z', "", INPUT_CSI_CBT }, 237 { 'c', "", INPUT_CSI_DA }, 238 { 'c', ">", INPUT_CSI_DA_TWO }, 239 { 'd', "", INPUT_CSI_VPA }, 240 { 'f', "", INPUT_CSI_CUP }, 241 { 'g', "", INPUT_CSI_TBC }, 242 { 'h', "", INPUT_CSI_SM }, 243 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 244 { 'l', "", INPUT_CSI_RM }, 245 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 246 { 'm', "", INPUT_CSI_SGR }, 247 { 'n', "", INPUT_CSI_DSR }, 248 { 'q', " ", INPUT_CSI_DECSCUSR }, 249 { 'r', "", INPUT_CSI_DECSTBM }, 250 { 's', "", INPUT_CSI_SCP }, 251 { 't', "", INPUT_CSI_WINOPS }, 252 { 'u', "", INPUT_CSI_RCP }, 253}; 254 255/* Input transition. */ 256struct input_transition { 257 int first; 258 int last; 259 260 int (*handler)(struct input_ctx *); 261 const struct input_state *state; 262}; 263 264/* Input state. */ 265struct input_state { 266 const char *name; 267 void (*enter)(struct input_ctx *); 268 void (*exit)(struct input_ctx *); 269 const struct input_transition *transitions; 270}; 271 272/* State transitions available from all states. */ 273#define INPUT_STATE_ANYWHERE \ 274 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 275 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 276 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 277 278/* Forward declarations of state tables. */ 279const struct input_transition input_state_ground_table[]; 280const struct input_transition input_state_esc_enter_table[]; 281const struct input_transition input_state_esc_intermediate_table[]; 282const struct input_transition input_state_csi_enter_table[]; 283const struct input_transition input_state_csi_parameter_table[]; 284const struct input_transition input_state_csi_intermediate_table[]; 285const struct input_transition input_state_csi_ignore_table[]; 286const struct input_transition input_state_dcs_enter_table[]; 287const struct input_transition input_state_dcs_parameter_table[]; 288const struct input_transition input_state_dcs_intermediate_table[]; 289const struct input_transition input_state_dcs_handler_table[]; 290const struct input_transition input_state_dcs_escape_table[]; 291const struct input_transition input_state_dcs_ignore_table[]; 292const struct input_transition input_state_osc_string_table[]; 293const struct input_transition input_state_apc_string_table[]; 294const struct input_transition input_state_rename_string_table[]; 295const struct input_transition input_state_consume_st_table[]; 296const struct input_transition input_state_utf8_three_table[]; 297const struct input_transition input_state_utf8_two_table[]; 298const struct input_transition input_state_utf8_one_table[]; 299 300/* ground state definition. */ 301const struct input_state input_state_ground = { 302 "ground", 303 input_ground, NULL, 304 input_state_ground_table 305}; 306 307/* esc_enter state definition. */ 308const struct input_state input_state_esc_enter = { 309 "esc_enter", 310 input_clear, NULL, 311 input_state_esc_enter_table 312}; 313 314/* esc_intermediate state definition. */ 315const struct input_state input_state_esc_intermediate = { 316 "esc_intermediate", 317 NULL, NULL, 318 input_state_esc_intermediate_table 319}; 320 321/* csi_enter state definition. */ 322const struct input_state input_state_csi_enter = { 323 "csi_enter", 324 input_clear, NULL, 325 input_state_csi_enter_table 326}; 327 328/* csi_parameter state definition. */ 329const struct input_state input_state_csi_parameter = { 330 "csi_parameter", 331 NULL, NULL, 332 input_state_csi_parameter_table 333}; 334 335/* csi_intermediate state definition. */ 336const struct input_state input_state_csi_intermediate = { 337 "csi_intermediate", 338 NULL, NULL, 339 input_state_csi_intermediate_table 340}; 341 342/* csi_ignore state definition. */ 343const struct input_state input_state_csi_ignore = { 344 "csi_ignore", 345 NULL, NULL, 346 input_state_csi_ignore_table 347}; 348 349/* dcs_enter state definition. */ 350const struct input_state input_state_dcs_enter = { 351 "dcs_enter", 352 input_clear, NULL, 353 input_state_dcs_enter_table 354}; 355 356/* dcs_parameter state definition. */ 357const struct input_state input_state_dcs_parameter = { 358 "dcs_parameter", 359 NULL, NULL, 360 input_state_dcs_parameter_table 361}; 362 363/* dcs_intermediate state definition. */ 364const struct input_state input_state_dcs_intermediate = { 365 "dcs_intermediate", 366 NULL, NULL, 367 input_state_dcs_intermediate_table 368}; 369 370/* dcs_handler state definition. */ 371const struct input_state input_state_dcs_handler = { 372 "dcs_handler", 373 NULL, NULL, 374 input_state_dcs_handler_table 375}; 376 377/* dcs_escape state definition. */ 378const struct input_state input_state_dcs_escape = { 379 "dcs_escape", 380 NULL, NULL, 381 input_state_dcs_escape_table 382}; 383 384/* dcs_ignore state definition. */ 385const struct input_state input_state_dcs_ignore = { 386 "dcs_ignore", 387 NULL, NULL, 388 input_state_dcs_ignore_table 389}; 390 391/* osc_string state definition. */ 392const struct input_state input_state_osc_string = { 393 "osc_string", 394 input_enter_osc, input_exit_osc, 395 input_state_osc_string_table 396}; 397 398/* apc_string state definition. */ 399const struct input_state input_state_apc_string = { 400 "apc_string", 401 input_enter_apc, input_exit_apc, 402 input_state_apc_string_table 403}; 404 405/* rename_string state definition. */ 406const struct input_state input_state_rename_string = { 407 "rename_string", 408 input_enter_rename, input_exit_rename, 409 input_state_rename_string_table 410}; 411 412/* consume_st state definition. */ 413const struct input_state input_state_consume_st = { 414 "consume_st", 415 NULL, NULL, 416 input_state_consume_st_table 417}; 418 419/* utf8_three state definition. */ 420const struct input_state input_state_utf8_three = { 421 "utf8_three", 422 NULL, NULL, 423 input_state_utf8_three_table 424}; 425 426/* utf8_two state definition. */ 427const struct input_state input_state_utf8_two = { 428 "utf8_two", 429 NULL, NULL, 430 input_state_utf8_two_table 431}; 432 433/* utf8_one state definition. */ 434const struct input_state input_state_utf8_one = { 435 "utf8_one", 436 NULL, NULL, 437 input_state_utf8_one_table 438}; 439 440/* ground state table. */ 441const struct input_transition input_state_ground_table[] = { 442 INPUT_STATE_ANYWHERE, 443 444 { 0x00, 0x17, input_c0_dispatch, NULL }, 445 { 0x19, 0x19, input_c0_dispatch, NULL }, 446 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 447 { 0x20, 0x7e, input_print, NULL }, 448 { 0x7f, 0x7f, NULL, NULL }, 449 { 0x80, 0xc1, input_print, NULL }, 450 { 0xc2, 0xdf, input_utf8_open, &input_state_utf8_one }, 451 { 0xe0, 0xef, input_utf8_open, &input_state_utf8_two }, 452 { 0xf0, 0xf4, input_utf8_open, &input_state_utf8_three }, 453 { 0xf5, 0xff, input_print, NULL }, 454 455 { -1, -1, NULL, NULL } 456}; 457 458/* esc_enter state table. */ 459const struct input_transition input_state_esc_enter_table[] = { 460 INPUT_STATE_ANYWHERE, 461 462 { 0x00, 0x17, input_c0_dispatch, NULL }, 463 { 0x19, 0x19, input_c0_dispatch, NULL }, 464 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 465 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 466 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 467 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 468 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 469 { 0x58, 0x58, NULL, &input_state_consume_st }, 470 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 471 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 472 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 473 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 474 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 475 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 476 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 477 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 478 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 479 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 480 { 0x7f, 0xff, NULL, NULL }, 481 482 { -1, -1, NULL, NULL } 483}; 484 485/* esc_interm state table. */ 486const struct input_transition input_state_esc_intermediate_table[] = { 487 INPUT_STATE_ANYWHERE, 488 489 { 0x00, 0x17, input_c0_dispatch, NULL }, 490 { 0x19, 0x19, input_c0_dispatch, NULL }, 491 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 492 { 0x20, 0x2f, input_intermediate, NULL }, 493 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 494 { 0x7f, 0xff, NULL, NULL }, 495 496 { -1, -1, NULL, NULL } 497}; 498 499/* csi_enter state table. */ 500const struct input_transition input_state_csi_enter_table[] = { 501 INPUT_STATE_ANYWHERE, 502 503 { 0x00, 0x17, input_c0_dispatch, NULL }, 504 { 0x19, 0x19, input_c0_dispatch, NULL }, 505 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 506 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 507 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 508 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 509 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 510 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 511 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 512 { 0x7f, 0xff, NULL, NULL }, 513 514 { -1, -1, NULL, NULL } 515}; 516 517/* csi_parameter state table. */ 518const struct input_transition input_state_csi_parameter_table[] = { 519 INPUT_STATE_ANYWHERE, 520 521 { 0x00, 0x17, input_c0_dispatch, NULL }, 522 { 0x19, 0x19, input_c0_dispatch, NULL }, 523 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 524 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 525 { 0x30, 0x39, input_parameter, NULL }, 526 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 527 { 0x3b, 0x3b, input_parameter, NULL }, 528 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 529 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 530 { 0x7f, 0xff, NULL, NULL }, 531 532 { -1, -1, NULL, NULL } 533}; 534 535/* csi_intermediate state table. */ 536const struct input_transition input_state_csi_intermediate_table[] = { 537 INPUT_STATE_ANYWHERE, 538 539 { 0x00, 0x17, input_c0_dispatch, NULL }, 540 { 0x19, 0x19, input_c0_dispatch, NULL }, 541 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 542 { 0x20, 0x2f, input_intermediate, NULL }, 543 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 544 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 545 { 0x7f, 0xff, NULL, NULL }, 546 547 { -1, -1, NULL, NULL } 548}; 549 550/* csi_ignore state table. */ 551const struct input_transition input_state_csi_ignore_table[] = { 552 INPUT_STATE_ANYWHERE, 553 554 { 0x00, 0x17, input_c0_dispatch, NULL }, 555 { 0x19, 0x19, input_c0_dispatch, NULL }, 556 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 557 { 0x20, 0x3f, NULL, NULL }, 558 { 0x40, 0x7e, NULL, &input_state_ground }, 559 { 0x7f, 0xff, NULL, NULL }, 560 561 { -1, -1, NULL, NULL } 562}; 563 564/* dcs_enter state table. */ 565const struct input_transition input_state_dcs_enter_table[] = { 566 INPUT_STATE_ANYWHERE, 567 568 { 0x00, 0x17, NULL, NULL }, 569 { 0x19, 0x19, NULL, NULL }, 570 { 0x1c, 0x1f, NULL, NULL }, 571 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 572 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 573 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 574 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 575 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 576 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 577 { 0x7f, 0xff, NULL, NULL }, 578 579 { -1, -1, NULL, NULL } 580}; 581 582/* dcs_parameter state table. */ 583const struct input_transition input_state_dcs_parameter_table[] = { 584 INPUT_STATE_ANYWHERE, 585 586 { 0x00, 0x17, NULL, NULL }, 587 { 0x19, 0x19, NULL, NULL }, 588 { 0x1c, 0x1f, NULL, NULL }, 589 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 590 { 0x30, 0x39, input_parameter, NULL }, 591 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 592 { 0x3b, 0x3b, input_parameter, NULL }, 593 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 594 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 595 { 0x7f, 0xff, NULL, NULL }, 596 597 { -1, -1, NULL, NULL } 598}; 599 600/* dcs_interm state table. */ 601const struct input_transition input_state_dcs_intermediate_table[] = { 602 INPUT_STATE_ANYWHERE, 603 604 { 0x00, 0x17, NULL, NULL }, 605 { 0x19, 0x19, NULL, NULL }, 606 { 0x1c, 0x1f, NULL, NULL }, 607 { 0x20, 0x2f, input_intermediate, NULL }, 608 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 609 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 610 { 0x7f, 0xff, NULL, NULL }, 611 612 { -1, -1, NULL, NULL } 613}; 614 615/* dcs_handler state table. */ 616const struct input_transition input_state_dcs_handler_table[] = { 617 /* No INPUT_STATE_ANYWHERE */ 618 619 { 0x00, 0x1a, input_input, NULL }, 620 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 621 { 0x1c, 0xff, input_input, NULL }, 622 623 { -1, -1, NULL, NULL } 624}; 625 626/* dcs_escape state table. */ 627const struct input_transition input_state_dcs_escape_table[] = { 628 /* No INPUT_STATE_ANYWHERE */ 629 630 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 631 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 632 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 633 634 { -1, -1, NULL, NULL } 635}; 636 637/* dcs_ignore state table. */ 638const struct input_transition input_state_dcs_ignore_table[] = { 639 INPUT_STATE_ANYWHERE, 640 641 { 0x00, 0x17, NULL, NULL }, 642 { 0x19, 0x19, NULL, NULL }, 643 { 0x1c, 0x1f, NULL, NULL }, 644 { 0x20, 0xff, NULL, NULL }, 645 646 { -1, -1, NULL, NULL } 647}; 648 649/* osc_string state table. */ 650const struct input_transition input_state_osc_string_table[] = { 651 INPUT_STATE_ANYWHERE, 652 653 { 0x00, 0x06, NULL, NULL }, 654 { 0x07, 0x07, NULL, &input_state_ground }, 655 { 0x08, 0x17, NULL, NULL }, 656 { 0x19, 0x19, NULL, NULL }, 657 { 0x1c, 0x1f, NULL, NULL }, 658 { 0x20, 0xff, input_input, NULL }, 659 660 { -1, -1, NULL, NULL } 661}; 662 663/* apc_string state table. */ 664const struct input_transition input_state_apc_string_table[] = { 665 INPUT_STATE_ANYWHERE, 666 667 { 0x00, 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/* rename_string state table. */ 676const struct input_transition input_state_rename_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/* consume_st state table. */ 688const struct input_transition input_state_consume_st_table[] = { 689 INPUT_STATE_ANYWHERE, 690 691 { 0x00, 0x17, NULL, NULL }, 692 { 0x19, 0x19, NULL, NULL }, 693 { 0x1c, 0x1f, NULL, NULL }, 694 { 0x20, 0xff, NULL, NULL }, 695 696 { -1, -1, NULL, NULL } 697}; 698 699/* utf8_three state table. */ 700const struct input_transition input_state_utf8_three_table[] = { 701 /* No INPUT_STATE_ANYWHERE */ 702 703 { 0x00, 0x7f, NULL, &input_state_ground }, 704 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_two }, 705 { 0xc0, 0xff, NULL, &input_state_ground }, 706 707 { -1, -1, NULL, NULL } 708}; 709 710/* utf8_two state table. */ 711const struct input_transition input_state_utf8_two_table[] = { 712 /* No INPUT_STATE_ANYWHERE */ 713 714 { 0x00, 0x7f, NULL, &input_state_ground }, 715 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_one }, 716 { 0xc0, 0xff, NULL, &input_state_ground }, 717 718 { -1, -1, NULL, NULL } 719}; 720 721/* utf8_one state table. */ 722const struct input_transition input_state_utf8_one_table[] = { 723 /* No INPUT_STATE_ANYWHERE */ 724 725 { 0x00, 0x7f, NULL, &input_state_ground }, 726 { 0x80, 0xbf, input_utf8_close, &input_state_ground }, 727 { 0xc0, 0xff, NULL, &input_state_ground }, 728 729 { -1, -1, NULL, NULL } 730}; 731 732/* Input table compare. */ 733int 734input_table_compare(const void *key, const void *value) 735{ 736 const struct input_ctx *ictx = key; 737 const struct input_table_entry *entry = value; 738 739 if (ictx->ch != entry->ch) 740 return (ictx->ch - entry->ch); 741 return (strcmp(ictx->interm_buf, entry->interm)); 742} 743 744/* Reset cell state to default. */ 745void 746input_reset_cell(struct input_ctx *ictx) 747{ 748 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 749 ictx->cell.set = 0; 750 ictx->cell.g0set = ictx->cell.g1set = 0; 751 752 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 753 ictx->old_cx = 0; 754 ictx->old_cy = 0; 755} 756 757/* Initialise input parser. */ 758void 759input_init(struct window_pane *wp) 760{ 761 struct input_ctx *ictx; 762 763 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 764 765 input_reset_cell(ictx); 766 767 *ictx->interm_buf = '\0'; 768 ictx->interm_len = 0; 769 770 *ictx->param_buf = '\0'; 771 ictx->param_len = 0; 772 773 ictx->input_space = INPUT_BUF_START; 774 ictx->input_buf = xmalloc(INPUT_BUF_START); 775 776 *ictx->input_buf = '\0'; 777 ictx->input_len = 0; 778 779 ictx->state = &input_state_ground; 780 ictx->flags = 0; 781 782 ictx->since_ground = evbuffer_new(); 783} 784 785/* Destroy input parser. */ 786void 787input_free(struct window_pane *wp) 788{ 789 struct input_ctx *ictx = wp->ictx; 790 791 free(ictx->input_buf); 792 evbuffer_free(ictx->since_ground); 793 794 free (ictx); 795 wp->ictx = NULL; 796} 797 798/* Reset input state and clear screen. */ 799void 800input_reset(struct window_pane *wp) 801{ 802 struct input_ctx *ictx = wp->ictx; 803 804 input_reset_cell(ictx); 805 806 if (wp->mode == NULL) 807 screen_write_start(&ictx->ctx, wp, &wp->base); 808 else 809 screen_write_start(&ictx->ctx, NULL, &wp->base); 810 screen_write_reset(&ictx->ctx); 811 screen_write_stop(&ictx->ctx); 812} 813 814/* Return pending data. */ 815struct evbuffer * 816input_pending(struct window_pane *wp) 817{ 818 return (wp->ictx->since_ground); 819} 820 821/* Change input state. */ 822void 823input_set_state(struct window_pane *wp, const struct input_transition *itr) 824{ 825 struct input_ctx *ictx = wp->ictx; 826 827 if (ictx->state->exit != NULL) 828 ictx->state->exit(ictx); 829 ictx->state = itr->state; 830 if (ictx->state->enter != NULL) 831 ictx->state->enter(ictx); 832} 833 834/* Parse input. */ 835void 836input_parse(struct window_pane *wp) 837{ 838 struct input_ctx *ictx = wp->ictx; 839 const struct input_transition *itr; 840 struct evbuffer *evb = wp->event->input; 841 u_char *buf; 842 size_t len, off; 843 844 if (EVBUFFER_LENGTH(evb) == 0) 845 return; 846 847 window_update_activity(wp->window); 848 wp->flags |= PANE_CHANGED; 849 850 /* 851 * Open the screen. Use NULL wp if there is a mode set as don't want to 852 * update the tty. 853 */ 854 if (wp->mode == NULL) 855 screen_write_start(&ictx->ctx, wp, &wp->base); 856 else 857 screen_write_start(&ictx->ctx, NULL, &wp->base); 858 ictx->wp = wp; 859 860 buf = EVBUFFER_DATA(evb); 861 len = EVBUFFER_LENGTH(evb); 862 notify_input(wp, evb); 863 off = 0; 864 865 log_debug("%s: %s, %zu bytes: %.*s", __func__, ictx->state->name, len, 866 (int)len, buf); 867 868 /* Parse the input. */ 869 while (off < len) { 870 ictx->ch = buf[off++]; 871 872 /* Find the transition. */ 873 itr = ictx->state->transitions; 874 while (itr->first != -1 && itr->last != -1) { 875 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 876 break; 877 itr++; 878 } 879 if (itr->first == -1 || itr->last == -1) { 880 /* No transition? Eh? */ 881 fatalx("no transition from state"); 882 } 883 884 /* 885 * Execute the handler, if any. Don't switch state if it 886 * returns non-zero. 887 */ 888 if (itr->handler != NULL && itr->handler(ictx) != 0) 889 continue; 890 891 /* And switch state, if necessary. */ 892 if (itr->state != NULL) 893 input_set_state(wp, itr); 894 895 /* If not in ground state, save input. */ 896 if (ictx->state != &input_state_ground) 897 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 898 } 899 900 /* Close the screen. */ 901 screen_write_stop(&ictx->ctx); 902 903 evbuffer_drain(evb, len); 904} 905 906/* Split the parameter list (if any). */ 907int 908input_split(struct input_ctx *ictx) 909 910{ 911 const char *errstr; 912 char *ptr, *out; 913 int n; 914 915 ictx->param_list_len = 0; 916 if (ictx->param_len == 0) 917 return (0); 918 919 ptr = ictx->param_buf; 920 while ((out = strsep(&ptr, ";")) != NULL) { 921 if (*out == '\0') 922 n = -1; 923 else { 924 n = strtonum(out, 0, INT_MAX, &errstr); 925 if (errstr != NULL) 926 return (-1); 927 } 928 929 ictx->param_list[ictx->param_list_len++] = n; 930 if (ictx->param_list_len == nitems(ictx->param_list)) 931 return (-1); 932 } 933 934 return (0); 935} 936 937/* Get an argument or return default value. */ 938int 939input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 940{ 941 int retval; 942 943 if (validx >= ictx->param_list_len) 944 return (defval); 945 946 retval = ictx->param_list[validx]; 947 if (retval == -1) 948 return (defval); 949 if (retval < minval) 950 return (minval); 951 return (retval); 952} 953 954/* Reply to terminal query. */ 955void 956input_reply(struct input_ctx *ictx, const char *fmt, ...) 957{ 958 va_list ap; 959 char *reply; 960 961 va_start(ap, fmt); 962 vasprintf(&reply, fmt, ap); 963 va_end(ap); 964 965 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 966 free(reply); 967} 968 969/* Clear saved state. */ 970void 971input_clear(struct input_ctx *ictx) 972{ 973 *ictx->interm_buf = '\0'; 974 ictx->interm_len = 0; 975 976 *ictx->param_buf = '\0'; 977 ictx->param_len = 0; 978 979 *ictx->input_buf = '\0'; 980 ictx->input_len = 0; 981 982 ictx->flags &= ~INPUT_DISCARD; 983} 984 985/* Reset for ground state. */ 986void 987input_ground(struct input_ctx *ictx) 988{ 989 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 990 991 if (ictx->input_space > INPUT_BUF_START) { 992 ictx->input_space = INPUT_BUF_START; 993 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 994 } 995} 996 997/* Output this character to the screen. */ 998int 999input_print(struct input_ctx *ictx) 1000{ 1001 int set; 1002 1003 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1004 if (set == 1) 1005 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1006 else 1007 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1008 1009 grid_cell_one(&ictx->cell.cell, ictx->ch); 1010 screen_write_cell(&ictx->ctx, &ictx->cell.cell); 1011 1012 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1013 1014 return (0); 1015} 1016 1017/* Collect intermediate string. */ 1018int 1019input_intermediate(struct input_ctx *ictx) 1020{ 1021 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1022 ictx->flags |= INPUT_DISCARD; 1023 else { 1024 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1025 ictx->interm_buf[ictx->interm_len] = '\0'; 1026 } 1027 1028 return (0); 1029} 1030 1031/* Collect parameter string. */ 1032int 1033input_parameter(struct input_ctx *ictx) 1034{ 1035 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1036 ictx->flags |= INPUT_DISCARD; 1037 else { 1038 ictx->param_buf[ictx->param_len++] = ictx->ch; 1039 ictx->param_buf[ictx->param_len] = '\0'; 1040 } 1041 1042 return (0); 1043} 1044 1045/* Collect input string. */ 1046int 1047input_input(struct input_ctx *ictx) 1048{ 1049 size_t available; 1050 1051 available = ictx->input_space; 1052 while (ictx->input_len + 1 >= available) { 1053 available *= 2; 1054 if (available > INPUT_BUF_LIMIT) { 1055 ictx->flags |= INPUT_DISCARD; 1056 return (0); 1057 } 1058 ictx->input_buf = xrealloc(ictx->input_buf, available); 1059 ictx->input_space = available; 1060 } 1061 ictx->input_buf[ictx->input_len++] = ictx->ch; 1062 ictx->input_buf[ictx->input_len] = '\0'; 1063 1064 return (0); 1065} 1066 1067/* Execute C0 control sequence. */ 1068int 1069input_c0_dispatch(struct input_ctx *ictx) 1070{ 1071 struct screen_write_ctx *sctx = &ictx->ctx; 1072 struct window_pane *wp = ictx->wp; 1073 struct screen *s = sctx->s; 1074 1075 log_debug("%s: '%c'", __func__, ictx->ch); 1076 1077 switch (ictx->ch) { 1078 case '\000': /* NUL */ 1079 break; 1080 case '\007': /* BEL */ 1081 alerts_queue(wp->window, WINDOW_BELL); 1082 break; 1083 case '\010': /* BS */ 1084 screen_write_backspace(sctx); 1085 break; 1086 case '\011': /* HT */ 1087 /* Don't tab beyond the end of the line. */ 1088 if (s->cx >= screen_size_x(s) - 1) 1089 break; 1090 1091 /* Find the next tab point, or use the last column if none. */ 1092 do { 1093 s->cx++; 1094 if (bit_test(s->tabs, s->cx)) 1095 break; 1096 } while (s->cx < screen_size_x(s) - 1); 1097 break; 1098 case '\012': /* LF */ 1099 case '\013': /* VT */ 1100 case '\014': /* FF */ 1101 screen_write_linefeed(sctx, 0); 1102 break; 1103 case '\015': /* CR */ 1104 screen_write_carriagereturn(sctx); 1105 break; 1106 case '\016': /* SO */ 1107 ictx->cell.set = 1; 1108 break; 1109 case '\017': /* SI */ 1110 ictx->cell.set = 0; 1111 break; 1112 default: 1113 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1114 break; 1115 } 1116 1117 return (0); 1118} 1119 1120/* Execute escape sequence. */ 1121int 1122input_esc_dispatch(struct input_ctx *ictx) 1123{ 1124 struct screen_write_ctx *sctx = &ictx->ctx; 1125 struct screen *s = sctx->s; 1126 struct input_table_entry *entry; 1127 1128 if (ictx->flags & INPUT_DISCARD) 1129 return (0); 1130 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1131 1132 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1133 sizeof input_esc_table[0], input_table_compare); 1134 if (entry == NULL) { 1135 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1136 return (0); 1137 } 1138 1139 switch (entry->type) { 1140 case INPUT_ESC_RIS: 1141 input_reset_cell(ictx); 1142 screen_write_reset(sctx); 1143 break; 1144 case INPUT_ESC_IND: 1145 screen_write_linefeed(sctx, 0); 1146 break; 1147 case INPUT_ESC_NEL: 1148 screen_write_carriagereturn(sctx); 1149 screen_write_linefeed(sctx, 0); 1150 break; 1151 case INPUT_ESC_HTS: 1152 if (s->cx < screen_size_x(s)) 1153 bit_set(s->tabs, s->cx); 1154 break; 1155 case INPUT_ESC_RI: 1156 screen_write_reverseindex(sctx); 1157 break; 1158 case INPUT_ESC_DECKPAM: 1159 screen_write_mode_set(sctx, MODE_KKEYPAD); 1160 break; 1161 case INPUT_ESC_DECKPNM: 1162 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1163 break; 1164 case INPUT_ESC_DECSC: 1165 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1166 ictx->old_cx = s->cx; 1167 ictx->old_cy = s->cy; 1168 break; 1169 case INPUT_ESC_DECRC: 1170 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1171 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1172 break; 1173 case INPUT_ESC_DECALN: 1174 screen_write_alignmenttest(sctx); 1175 break; 1176 case INPUT_ESC_SCSG0_ON: 1177 ictx->cell.g0set = 1; 1178 break; 1179 case INPUT_ESC_SCSG0_OFF: 1180 ictx->cell.g0set = 0; 1181 break; 1182 case INPUT_ESC_SCSG1_ON: 1183 ictx->cell.g1set = 1; 1184 break; 1185 case INPUT_ESC_SCSG1_OFF: 1186 ictx->cell.g1set = 0; 1187 break; 1188 } 1189 1190 return (0); 1191} 1192 1193/* Execute control sequence. */ 1194int 1195input_csi_dispatch(struct input_ctx *ictx) 1196{ 1197 struct screen_write_ctx *sctx = &ictx->ctx; 1198 struct screen *s = sctx->s; 1199 struct input_table_entry *entry; 1200 int n, m; 1201 u_int cx; 1202 1203 if (ictx->flags & INPUT_DISCARD) 1204 return (0); 1205 if (input_split(ictx) != 0) 1206 return (0); 1207 log_debug("%s: '%c' \"%s\" \"%s\"", 1208 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1209 1210 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1211 sizeof input_csi_table[0], input_table_compare); 1212 if (entry == NULL) { 1213 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1214 return (0); 1215 } 1216 1217 switch (entry->type) { 1218 case INPUT_CSI_CBT: 1219 /* Find the previous tab point, n times. */ 1220 cx = s->cx; 1221 if (cx > screen_size_x(s) - 1) 1222 cx = screen_size_x(s) - 1; 1223 n = input_get(ictx, 0, 1, 1); 1224 while (cx > 0 && n-- > 0) { 1225 do 1226 cx--; 1227 while (cx > 0 && !bit_test(s->tabs, cx)); 1228 } 1229 s->cx = cx; 1230 break; 1231 case INPUT_CSI_CUB: 1232 screen_write_cursorleft(sctx, input_get(ictx, 0, 1, 1)); 1233 break; 1234 case INPUT_CSI_CUD: 1235 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1236 break; 1237 case INPUT_CSI_CUF: 1238 screen_write_cursorright(sctx, input_get(ictx, 0, 1, 1)); 1239 break; 1240 case INPUT_CSI_CUP: 1241 n = input_get(ictx, 0, 1, 1); 1242 m = input_get(ictx, 1, 1, 1); 1243 screen_write_cursormove(sctx, m - 1, n - 1); 1244 break; 1245 case INPUT_CSI_WINOPS: 1246 input_csi_dispatch_winops(ictx); 1247 break; 1248 case INPUT_CSI_CUU: 1249 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1250 break; 1251 case INPUT_CSI_CNL: 1252 screen_write_carriagereturn(sctx); 1253 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1254 break; 1255 case INPUT_CSI_CPL: 1256 screen_write_carriagereturn(sctx); 1257 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1258 break; 1259 case INPUT_CSI_DA: 1260 switch (input_get(ictx, 0, 0, 0)) { 1261 case 0: 1262 input_reply(ictx, "\033[?1;2c"); 1263 break; 1264 default: 1265 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1266 break; 1267 } 1268 break; 1269 case INPUT_CSI_DA_TWO: 1270 switch (input_get(ictx, 0, 0, 0)) { 1271 case 0: 1272 input_reply(ictx, "\033[>84;0;0c"); 1273 break; 1274 default: 1275 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1276 break; 1277 } 1278 break; 1279 case INPUT_CSI_ECH: 1280 screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1)); 1281 break; 1282 case INPUT_CSI_DCH: 1283 screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1)); 1284 break; 1285 case INPUT_CSI_DECSTBM: 1286 n = input_get(ictx, 0, 1, 1); 1287 m = input_get(ictx, 1, 1, screen_size_y(s)); 1288 screen_write_scrollregion(sctx, n - 1, m - 1); 1289 break; 1290 case INPUT_CSI_DL: 1291 screen_write_deleteline(sctx, input_get(ictx, 0, 1, 1)); 1292 break; 1293 case INPUT_CSI_DSR: 1294 switch (input_get(ictx, 0, 0, 0)) { 1295 case 5: 1296 input_reply(ictx, "\033[0n"); 1297 break; 1298 case 6: 1299 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1300 break; 1301 default: 1302 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1303 break; 1304 } 1305 break; 1306 case INPUT_CSI_ED: 1307 switch (input_get(ictx, 0, 0, 0)) { 1308 case 0: 1309 screen_write_clearendofscreen(sctx); 1310 break; 1311 case 1: 1312 screen_write_clearstartofscreen(sctx); 1313 break; 1314 case 2: 1315 screen_write_clearscreen(sctx); 1316 break; 1317 case 3: 1318 switch (input_get(ictx, 1, 0, 0)) { 1319 case 0: 1320 /* 1321 * Linux console extension to clear history 1322 * (for example before locking the screen). 1323 */ 1324 screen_write_clearhistory(sctx); 1325 break; 1326 } 1327 break; 1328 default: 1329 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1330 break; 1331 } 1332 break; 1333 case INPUT_CSI_EL: 1334 switch (input_get(ictx, 0, 0, 0)) { 1335 case 0: 1336 screen_write_clearendofline(sctx); 1337 break; 1338 case 1: 1339 screen_write_clearstartofline(sctx); 1340 break; 1341 case 2: 1342 screen_write_clearline(sctx); 1343 break; 1344 default: 1345 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1346 break; 1347 } 1348 break; 1349 case INPUT_CSI_HPA: 1350 n = input_get(ictx, 0, 1, 1); 1351 screen_write_cursormove(sctx, n - 1, s->cy); 1352 break; 1353 case INPUT_CSI_ICH: 1354 screen_write_insertcharacter(sctx, input_get(ictx, 0, 1, 1)); 1355 break; 1356 case INPUT_CSI_IL: 1357 screen_write_insertline(sctx, input_get(ictx, 0, 1, 1)); 1358 break; 1359 case INPUT_CSI_RCP: 1360 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1361 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1362 break; 1363 case INPUT_CSI_RM: 1364 input_csi_dispatch_rm(ictx); 1365 break; 1366 case INPUT_CSI_RM_PRIVATE: 1367 input_csi_dispatch_rm_private(ictx); 1368 break; 1369 case INPUT_CSI_SCP: 1370 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1371 ictx->old_cx = s->cx; 1372 ictx->old_cy = s->cy; 1373 break; 1374 case INPUT_CSI_SGR: 1375 input_csi_dispatch_sgr(ictx); 1376 break; 1377 case INPUT_CSI_SM: 1378 input_csi_dispatch_sm(ictx); 1379 break; 1380 case INPUT_CSI_SM_PRIVATE: 1381 input_csi_dispatch_sm_private(ictx); 1382 break; 1383 case INPUT_CSI_TBC: 1384 switch (input_get(ictx, 0, 0, 0)) { 1385 case 0: 1386 if (s->cx < screen_size_x(s)) 1387 bit_clear(s->tabs, s->cx); 1388 break; 1389 case 3: 1390 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1391 break; 1392 default: 1393 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1394 break; 1395 } 1396 break; 1397 case INPUT_CSI_VPA: 1398 n = input_get(ictx, 0, 1, 1); 1399 screen_write_cursormove(sctx, s->cx, n - 1); 1400 break; 1401 case INPUT_CSI_DECSCUSR: 1402 n = input_get(ictx, 0, 0, 0); 1403 screen_set_cursor_style(s, n); 1404 break; 1405 } 1406 1407 return (0); 1408} 1409 1410/* Handle CSI RM. */ 1411void 1412input_csi_dispatch_rm(struct input_ctx *ictx) 1413{ 1414 u_int i; 1415 1416 for (i = 0; i < ictx->param_list_len; i++) { 1417 switch (input_get(ictx, i, 0, -1)) { 1418 case 4: /* IRM */ 1419 screen_write_mode_clear(&ictx->ctx, MODE_INSERT); 1420 break; 1421 case 34: 1422 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1423 break; 1424 default: 1425 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1426 break; 1427 } 1428 } 1429} 1430 1431/* Handle CSI private RM. */ 1432void 1433input_csi_dispatch_rm_private(struct input_ctx *ictx) 1434{ 1435 struct window_pane *wp = ictx->wp; 1436 u_int i; 1437 1438 for (i = 0; i < ictx->param_list_len; i++) { 1439 switch (input_get(ictx, i, 0, -1)) { 1440 case 1: /* DECCKM */ 1441 screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR); 1442 break; 1443 case 3: /* DECCOLM */ 1444 screen_write_cursormove(&ictx->ctx, 0, 0); 1445 screen_write_clearscreen(&ictx->ctx); 1446 break; 1447 case 7: /* DECAWM */ 1448 screen_write_mode_clear(&ictx->ctx, MODE_WRAP); 1449 break; 1450 case 12: 1451 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1452 break; 1453 case 25: /* TCEM */ 1454 screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); 1455 break; 1456 case 1000: 1457 case 1001: 1458 case 1002: 1459 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1460 break; 1461 case 1004: 1462 screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON); 1463 break; 1464 case 1005: 1465 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8); 1466 break; 1467 case 1006: 1468 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR); 1469 break; 1470 case 47: 1471 case 1047: 1472 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1473 break; 1474 case 1049: 1475 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1476 break; 1477 case 2004: 1478 screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE); 1479 break; 1480 default: 1481 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1482 break; 1483 } 1484 } 1485} 1486 1487/* Handle CSI SM. */ 1488void 1489input_csi_dispatch_sm(struct input_ctx *ictx) 1490{ 1491 u_int i; 1492 1493 for (i = 0; i < ictx->param_list_len; i++) { 1494 switch (input_get(ictx, i, 0, -1)) { 1495 case 4: /* IRM */ 1496 screen_write_mode_set(&ictx->ctx, MODE_INSERT); 1497 break; 1498 case 34: 1499 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1500 break; 1501 default: 1502 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1503 break; 1504 } 1505 } 1506} 1507 1508/* Handle CSI private SM. */ 1509void 1510input_csi_dispatch_sm_private(struct input_ctx *ictx) 1511{ 1512 struct window_pane *wp = ictx->wp; 1513 u_int i; 1514 1515 for (i = 0; i < ictx->param_list_len; i++) { 1516 switch (input_get(ictx, i, 0, -1)) { 1517 case 1: /* DECCKM */ 1518 screen_write_mode_set(&ictx->ctx, MODE_KCURSOR); 1519 break; 1520 case 3: /* DECCOLM */ 1521 screen_write_cursormove(&ictx->ctx, 0, 0); 1522 screen_write_clearscreen(&ictx->ctx); 1523 break; 1524 case 7: /* DECAWM */ 1525 screen_write_mode_set(&ictx->ctx, MODE_WRAP); 1526 break; 1527 case 12: 1528 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1529 break; 1530 case 25: /* TCEM */ 1531 screen_write_mode_set(&ictx->ctx, MODE_CURSOR); 1532 break; 1533 case 1000: 1534 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1535 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD); 1536 break; 1537 case 1002: 1538 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1539 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON); 1540 break; 1541 case 1004: 1542 if (ictx->ctx.s->mode & MODE_FOCUSON) 1543 break; 1544 screen_write_mode_set(&ictx->ctx, MODE_FOCUSON); 1545 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1546 break; 1547 case 1005: 1548 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8); 1549 break; 1550 case 1006: 1551 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR); 1552 break; 1553 case 47: 1554 case 1047: 1555 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1556 break; 1557 case 1049: 1558 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1559 break; 1560 case 2004: 1561 screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE); 1562 break; 1563 default: 1564 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1565 break; 1566 } 1567 } 1568} 1569 1570/* Handle CSI window operations. */ 1571void 1572input_csi_dispatch_winops(struct input_ctx *ictx) 1573{ 1574 struct window_pane *wp = ictx->wp; 1575 int n, m; 1576 1577 m = 0; 1578 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1579 switch (n) { 1580 case 1: 1581 case 2: 1582 case 5: 1583 case 6: 1584 case 7: 1585 case 11: 1586 case 13: 1587 case 14: 1588 case 19: 1589 case 20: 1590 case 21: 1591 case 24: 1592 break; 1593 case 3: 1594 case 4: 1595 case 8: 1596 m++; 1597 if (input_get(ictx, m, 0, -1) == -1) 1598 return; 1599 /* FALLTHROUGH */ 1600 case 9: 1601 case 10: 1602 case 22: 1603 case 23: 1604 m++; 1605 if (input_get(ictx, m, 0, -1) == -1) 1606 return; 1607 break; 1608 case 18: 1609 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1610 break; 1611 default: 1612 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1613 break; 1614 } 1615 m++; 1616 } 1617} 1618 1619/* Handle CSI SGR for 256 colours. */ 1620void 1621input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1622{ 1623 struct grid_cell *gc = &ictx->cell.cell; 1624 int c; 1625 1626 (*i)++; 1627 c = input_get(ictx, *i, 0, -1); 1628 if (c == -1) { 1629 if (fgbg == 38) { 1630 gc->flags &= ~GRID_FLAG_FG256; 1631 gc->fg = 8; 1632 } else if (fgbg == 48) { 1633 gc->flags &= ~GRID_FLAG_BG256; 1634 gc->bg = 8; 1635 } 1636 } else { 1637 if (fgbg == 38) { 1638 gc->flags |= GRID_FLAG_FG256; 1639 gc->fg = c; 1640 } else if (fgbg == 48) { 1641 gc->flags |= GRID_FLAG_BG256; 1642 gc->bg = c; 1643 } 1644 } 1645} 1646 1647/* Handle CSI SGR for RGB colours. */ 1648void 1649input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1650{ 1651 struct grid_cell *gc = &ictx->cell.cell; 1652 int c, r, g, b; 1653 1654 (*i)++; 1655 r = input_get(ictx, *i, 0, -1); 1656 if (r == -1 || r > 255) 1657 return; 1658 (*i)++; 1659 g = input_get(ictx, *i, 0, -1); 1660 if (g == -1 || g > 255) 1661 return; 1662 (*i)++; 1663 b = input_get(ictx, *i, 0, -1); 1664 if (b == -1 || b > 255) 1665 return; 1666 1667 c = colour_find_rgb(r, g, b); 1668 if (fgbg == 38) { 1669 gc->flags |= GRID_FLAG_FG256; 1670 gc->fg = c; 1671 } else if (fgbg == 48) { 1672 gc->flags |= GRID_FLAG_BG256; 1673 gc->bg = c; 1674 } 1675} 1676 1677/* Handle CSI SGR. */ 1678void 1679input_csi_dispatch_sgr(struct input_ctx *ictx) 1680{ 1681 struct grid_cell *gc = &ictx->cell.cell; 1682 u_int i; 1683 int n; 1684 1685 if (ictx->param_list_len == 0) { 1686 memcpy(gc, &grid_default_cell, sizeof *gc); 1687 return; 1688 } 1689 1690 for (i = 0; i < ictx->param_list_len; i++) { 1691 n = input_get(ictx, i, 0, 0); 1692 1693 if (n == 38 || n == 48) { 1694 i++; 1695 switch (input_get(ictx, i, 0, -1)) { 1696 case 2: 1697 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1698 break; 1699 case 5: 1700 input_csi_dispatch_sgr_256(ictx, n, &i); 1701 break; 1702 } 1703 continue; 1704 } 1705 1706 switch (n) { 1707 case 0: 1708 case 10: 1709 memcpy(gc, &grid_default_cell, sizeof *gc); 1710 break; 1711 case 1: 1712 gc->attr |= GRID_ATTR_BRIGHT; 1713 break; 1714 case 2: 1715 gc->attr |= GRID_ATTR_DIM; 1716 break; 1717 case 3: 1718 gc->attr |= GRID_ATTR_ITALICS; 1719 break; 1720 case 4: 1721 gc->attr |= GRID_ATTR_UNDERSCORE; 1722 break; 1723 case 5: 1724 gc->attr |= GRID_ATTR_BLINK; 1725 break; 1726 case 7: 1727 gc->attr |= GRID_ATTR_REVERSE; 1728 break; 1729 case 8: 1730 gc->attr |= GRID_ATTR_HIDDEN; 1731 break; 1732 case 22: 1733 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 1734 break; 1735 case 23: 1736 gc->attr &= ~GRID_ATTR_ITALICS; 1737 break; 1738 case 24: 1739 gc->attr &= ~GRID_ATTR_UNDERSCORE; 1740 break; 1741 case 25: 1742 gc->attr &= ~GRID_ATTR_BLINK; 1743 break; 1744 case 27: 1745 gc->attr &= ~GRID_ATTR_REVERSE; 1746 break; 1747 case 30: 1748 case 31: 1749 case 32: 1750 case 33: 1751 case 34: 1752 case 35: 1753 case 36: 1754 case 37: 1755 gc->flags &= ~GRID_FLAG_FG256; 1756 gc->fg = n - 30; 1757 break; 1758 case 39: 1759 gc->flags &= ~GRID_FLAG_FG256; 1760 gc->fg = 8; 1761 break; 1762 case 40: 1763 case 41: 1764 case 42: 1765 case 43: 1766 case 44: 1767 case 45: 1768 case 46: 1769 case 47: 1770 gc->flags &= ~GRID_FLAG_BG256; 1771 gc->bg = n - 40; 1772 break; 1773 case 49: 1774 gc->flags &= ~GRID_FLAG_BG256; 1775 gc->bg = 8; 1776 break; 1777 case 90: 1778 case 91: 1779 case 92: 1780 case 93: 1781 case 94: 1782 case 95: 1783 case 96: 1784 case 97: 1785 gc->flags &= ~GRID_FLAG_FG256; 1786 gc->fg = n; 1787 break; 1788 case 100: 1789 case 101: 1790 case 102: 1791 case 103: 1792 case 104: 1793 case 105: 1794 case 106: 1795 case 107: 1796 gc->flags &= ~GRID_FLAG_BG256; 1797 gc->bg = n - 10; 1798 break; 1799 } 1800 } 1801} 1802 1803/* DCS terminator (ST) received. */ 1804int 1805input_dcs_dispatch(struct input_ctx *ictx) 1806{ 1807 const char prefix[] = "tmux;"; 1808 const u_int prefix_len = (sizeof prefix) - 1; 1809 1810 if (ictx->flags & INPUT_DISCARD) 1811 return (0); 1812 1813 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1814 1815 /* Check for tmux prefix. */ 1816 if (ictx->input_len >= prefix_len && 1817 strncmp(ictx->input_buf, prefix, prefix_len) == 0) { 1818 screen_write_rawstring(&ictx->ctx, 1819 ictx->input_buf + prefix_len, ictx->input_len - prefix_len); 1820 } 1821 1822 return (0); 1823} 1824 1825/* OSC string started. */ 1826void 1827input_enter_osc(struct input_ctx *ictx) 1828{ 1829 log_debug("%s", __func__); 1830 1831 input_clear(ictx); 1832} 1833 1834/* OSC terminator (ST) received. */ 1835void 1836input_exit_osc(struct input_ctx *ictx) 1837{ 1838 u_char *p = ictx->input_buf; 1839 u_int option; 1840 1841 if (ictx->flags & INPUT_DISCARD) 1842 return; 1843 if (ictx->input_len < 1 || *p < '0' || *p > '9') 1844 return; 1845 1846 log_debug("%s: \"%s\"", __func__, p); 1847 1848 option = 0; 1849 while (*p >= '0' && *p <= '9') 1850 option = option * 10 + *p++ - '0'; 1851 if (*p == ';') 1852 p++; 1853 1854 switch (option) { 1855 case 0: 1856 case 2: 1857 screen_set_title(ictx->ctx.s, p); 1858 server_status_window(ictx->wp->window); 1859 break; 1860 case 12: 1861 if (*p != '?') /* ? is colour request */ 1862 screen_set_cursor_colour(ictx->ctx.s, p); 1863 break; 1864 case 112: 1865 if (*p == '\0') /* no arguments allowed */ 1866 screen_set_cursor_colour(ictx->ctx.s, ""); 1867 break; 1868 default: 1869 log_debug("%s: unknown '%u'", __func__, option); 1870 break; 1871 } 1872} 1873 1874/* APC string started. */ 1875void 1876input_enter_apc(struct input_ctx *ictx) 1877{ 1878 log_debug("%s", __func__); 1879 1880 input_clear(ictx); 1881} 1882 1883/* APC terminator (ST) received. */ 1884void 1885input_exit_apc(struct input_ctx *ictx) 1886{ 1887 if (ictx->flags & INPUT_DISCARD) 1888 return; 1889 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1890 1891 screen_set_title(ictx->ctx.s, ictx->input_buf); 1892 server_status_window(ictx->wp->window); 1893} 1894 1895/* Rename string started. */ 1896void 1897input_enter_rename(struct input_ctx *ictx) 1898{ 1899 log_debug("%s", __func__); 1900 1901 input_clear(ictx); 1902} 1903 1904/* Rename terminator (ST) received. */ 1905void 1906input_exit_rename(struct input_ctx *ictx) 1907{ 1908 if (ictx->flags & INPUT_DISCARD) 1909 return; 1910 if (!options_get_number(&ictx->wp->window->options, "allow-rename")) 1911 return; 1912 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1913 1914 window_set_name(ictx->wp->window, ictx->input_buf); 1915 options_set_number(&ictx->wp->window->options, "automatic-rename", 0); 1916 1917 server_status_window(ictx->wp->window); 1918} 1919 1920/* Open UTF-8 character. */ 1921int 1922input_utf8_open(struct input_ctx *ictx) 1923{ 1924 if (!options_get_number(&ictx->wp->window->options, "utf8")) { 1925 /* Print, and do not switch state. */ 1926 input_print(ictx); 1927 return (-1); 1928 } 1929 log_debug("%s", __func__); 1930 1931 utf8_open(&ictx->utf8data, ictx->ch); 1932 return (0); 1933} 1934 1935/* Append to UTF-8 character. */ 1936int 1937input_utf8_add(struct input_ctx *ictx) 1938{ 1939 log_debug("%s", __func__); 1940 1941 utf8_append(&ictx->utf8data, ictx->ch); 1942 return (0); 1943} 1944 1945/* Close UTF-8 string. */ 1946int 1947input_utf8_close(struct input_ctx *ictx) 1948{ 1949 log_debug("%s", __func__); 1950 1951 utf8_append(&ictx->utf8data, ictx->ch); 1952 1953 grid_cell_set(&ictx->cell.cell, &ictx->utf8data); 1954 screen_write_cell(&ictx->ctx, &ictx->cell.cell); 1955 1956 return (0); 1957} 1958