input.c revision 1.166
1/* $OpenBSD: input.c,v 1.166 2019/11/15 11:21:32 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. */ 54struct 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. */ 62struct 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. */ 75struct 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. */ 126struct input_transition; 127static int input_split(struct input_ctx *); 128static int input_get(struct input_ctx *, u_int, int, int); 129static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 130static void input_set_state(struct window_pane *, 131 const struct input_transition *); 132static void input_reset_cell(struct input_ctx *); 133 134static void input_osc_4(struct input_ctx *, const char *); 135static void input_osc_10(struct input_ctx *, const char *); 136static void input_osc_11(struct input_ctx *, const char *); 137static void input_osc_52(struct input_ctx *, const char *); 138static void input_osc_104(struct input_ctx *, const char *); 139 140/* Transition entry/exit handlers. */ 141static void input_clear(struct input_ctx *); 142static void input_ground(struct input_ctx *); 143static void input_enter_dcs(struct input_ctx *); 144static void input_enter_osc(struct input_ctx *); 145static void input_exit_osc(struct input_ctx *); 146static void input_enter_apc(struct input_ctx *); 147static void input_exit_apc(struct input_ctx *); 148static void input_enter_rename(struct input_ctx *); 149static void input_exit_rename(struct input_ctx *); 150 151/* Input state handlers. */ 152static int input_print(struct input_ctx *); 153static int input_intermediate(struct input_ctx *); 154static int input_parameter(struct input_ctx *); 155static int input_input(struct input_ctx *); 156static int input_c0_dispatch(struct input_ctx *); 157static int input_esc_dispatch(struct input_ctx *); 158static int input_csi_dispatch(struct input_ctx *); 159static void input_csi_dispatch_rm(struct input_ctx *); 160static void input_csi_dispatch_rm_private(struct input_ctx *); 161static void input_csi_dispatch_sm(struct input_ctx *); 162static void input_csi_dispatch_sm_private(struct input_ctx *); 163static void input_csi_dispatch_winops(struct input_ctx *); 164static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 165static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 166static void input_csi_dispatch_sgr(struct input_ctx *); 167static int input_dcs_dispatch(struct input_ctx *); 168static int input_top_bit_set(struct input_ctx *); 169static int input_end_bel(struct input_ctx *); 170 171/* Command table comparison function. */ 172static int input_table_compare(const void *, const void *); 173 174/* Command table entry. */ 175struct input_table_entry { 176 int ch; 177 const char *interm; 178 int type; 179}; 180 181/* Escape commands. */ 182enum 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. */ 201static 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. */ 220enum 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_SD, 248 INPUT_CSI_SGR, 249 INPUT_CSI_SM, 250 INPUT_CSI_SM_PRIVATE, 251 INPUT_CSI_SU, 252 INPUT_CSI_TBC, 253 INPUT_CSI_VPA, 254 INPUT_CSI_WINOPS, 255}; 256 257/* Control (CSI) command table. */ 258static const struct input_table_entry input_csi_table[] = { 259 { '@', "", INPUT_CSI_ICH }, 260 { 'A', "", INPUT_CSI_CUU }, 261 { 'B', "", INPUT_CSI_CUD }, 262 { 'C', "", INPUT_CSI_CUF }, 263 { 'D', "", INPUT_CSI_CUB }, 264 { 'E', "", INPUT_CSI_CNL }, 265 { 'F', "", INPUT_CSI_CPL }, 266 { 'G', "", INPUT_CSI_HPA }, 267 { 'H', "", INPUT_CSI_CUP }, 268 { 'J', "", INPUT_CSI_ED }, 269 { 'K', "", INPUT_CSI_EL }, 270 { 'L', "", INPUT_CSI_IL }, 271 { 'M', "", INPUT_CSI_DL }, 272 { 'P', "", INPUT_CSI_DCH }, 273 { 'S', "", INPUT_CSI_SU }, 274 { 'T', "", INPUT_CSI_SD }, 275 { 'X', "", INPUT_CSI_ECH }, 276 { 'Z', "", INPUT_CSI_CBT }, 277 { '`', "", INPUT_CSI_HPA }, 278 { 'b', "", INPUT_CSI_REP }, 279 { 'c', "", INPUT_CSI_DA }, 280 { 'c', ">", INPUT_CSI_DA_TWO }, 281 { 'd', "", INPUT_CSI_VPA }, 282 { 'f', "", INPUT_CSI_CUP }, 283 { 'g', "", INPUT_CSI_TBC }, 284 { 'h', "", INPUT_CSI_SM }, 285 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 286 { 'l', "", INPUT_CSI_RM }, 287 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 288 { 'm', "", INPUT_CSI_SGR }, 289 { 'n', "", INPUT_CSI_DSR }, 290 { 'q', " ", INPUT_CSI_DECSCUSR }, 291 { 'r', "", INPUT_CSI_DECSTBM }, 292 { 's', "", INPUT_CSI_SCP }, 293 { 't', "", INPUT_CSI_WINOPS }, 294 { 'u', "", INPUT_CSI_RCP }, 295}; 296 297/* Input transition. */ 298struct input_transition { 299 int first; 300 int last; 301 302 int (*handler)(struct input_ctx *); 303 const struct input_state *state; 304}; 305 306/* Input state. */ 307struct input_state { 308 const char *name; 309 void (*enter)(struct input_ctx *); 310 void (*exit)(struct input_ctx *); 311 const struct input_transition *transitions; 312}; 313 314/* State transitions available from all states. */ 315#define INPUT_STATE_ANYWHERE \ 316 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 317 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 318 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 319 320/* Forward declarations of state tables. */ 321static const struct input_transition input_state_ground_table[]; 322static const struct input_transition input_state_esc_enter_table[]; 323static const struct input_transition input_state_esc_intermediate_table[]; 324static const struct input_transition input_state_csi_enter_table[]; 325static const struct input_transition input_state_csi_parameter_table[]; 326static const struct input_transition input_state_csi_intermediate_table[]; 327static const struct input_transition input_state_csi_ignore_table[]; 328static const struct input_transition input_state_dcs_enter_table[]; 329static const struct input_transition input_state_dcs_parameter_table[]; 330static const struct input_transition input_state_dcs_intermediate_table[]; 331static const struct input_transition input_state_dcs_handler_table[]; 332static const struct input_transition input_state_dcs_escape_table[]; 333static const struct input_transition input_state_dcs_ignore_table[]; 334static const struct input_transition input_state_osc_string_table[]; 335static const struct input_transition input_state_apc_string_table[]; 336static const struct input_transition input_state_rename_string_table[]; 337static const struct input_transition input_state_consume_st_table[]; 338 339/* ground state definition. */ 340static const struct input_state input_state_ground = { 341 "ground", 342 input_ground, NULL, 343 input_state_ground_table 344}; 345 346/* esc_enter state definition. */ 347static const struct input_state input_state_esc_enter = { 348 "esc_enter", 349 input_clear, NULL, 350 input_state_esc_enter_table 351}; 352 353/* esc_intermediate state definition. */ 354static const struct input_state input_state_esc_intermediate = { 355 "esc_intermediate", 356 NULL, NULL, 357 input_state_esc_intermediate_table 358}; 359 360/* csi_enter state definition. */ 361static const struct input_state input_state_csi_enter = { 362 "csi_enter", 363 input_clear, NULL, 364 input_state_csi_enter_table 365}; 366 367/* csi_parameter state definition. */ 368static const struct input_state input_state_csi_parameter = { 369 "csi_parameter", 370 NULL, NULL, 371 input_state_csi_parameter_table 372}; 373 374/* csi_intermediate state definition. */ 375static const struct input_state input_state_csi_intermediate = { 376 "csi_intermediate", 377 NULL, NULL, 378 input_state_csi_intermediate_table 379}; 380 381/* csi_ignore state definition. */ 382static const struct input_state input_state_csi_ignore = { 383 "csi_ignore", 384 NULL, NULL, 385 input_state_csi_ignore_table 386}; 387 388/* dcs_enter state definition. */ 389static const struct input_state input_state_dcs_enter = { 390 "dcs_enter", 391 input_enter_dcs, NULL, 392 input_state_dcs_enter_table 393}; 394 395/* dcs_parameter state definition. */ 396static const struct input_state input_state_dcs_parameter = { 397 "dcs_parameter", 398 NULL, NULL, 399 input_state_dcs_parameter_table 400}; 401 402/* dcs_intermediate state definition. */ 403static const struct input_state input_state_dcs_intermediate = { 404 "dcs_intermediate", 405 NULL, NULL, 406 input_state_dcs_intermediate_table 407}; 408 409/* dcs_handler state definition. */ 410static const struct input_state input_state_dcs_handler = { 411 "dcs_handler", 412 NULL, NULL, 413 input_state_dcs_handler_table 414}; 415 416/* dcs_escape state definition. */ 417static const struct input_state input_state_dcs_escape = { 418 "dcs_escape", 419 NULL, NULL, 420 input_state_dcs_escape_table 421}; 422 423/* dcs_ignore state definition. */ 424static const struct input_state input_state_dcs_ignore = { 425 "dcs_ignore", 426 NULL, NULL, 427 input_state_dcs_ignore_table 428}; 429 430/* osc_string state definition. */ 431static const struct input_state input_state_osc_string = { 432 "osc_string", 433 input_enter_osc, input_exit_osc, 434 input_state_osc_string_table 435}; 436 437/* apc_string state definition. */ 438static const struct input_state input_state_apc_string = { 439 "apc_string", 440 input_enter_apc, input_exit_apc, 441 input_state_apc_string_table 442}; 443 444/* rename_string state definition. */ 445static const struct input_state input_state_rename_string = { 446 "rename_string", 447 input_enter_rename, input_exit_rename, 448 input_state_rename_string_table 449}; 450 451/* consume_st state definition. */ 452static const struct input_state input_state_consume_st = { 453 "consume_st", 454 input_enter_rename, NULL, /* rename also waits for ST */ 455 input_state_consume_st_table 456}; 457 458/* ground state table. */ 459static const struct input_transition input_state_ground_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, 0x7e, input_print, NULL }, 466 { 0x7f, 0x7f, NULL, NULL }, 467 { 0x80, 0xff, input_top_bit_set, NULL }, 468 469 { -1, -1, NULL, NULL } 470}; 471 472/* esc_enter state table. */ 473static const struct input_transition input_state_esc_enter_table[] = { 474 INPUT_STATE_ANYWHERE, 475 476 { 0x00, 0x17, input_c0_dispatch, NULL }, 477 { 0x19, 0x19, input_c0_dispatch, NULL }, 478 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 479 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 480 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 481 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 482 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 483 { 0x58, 0x58, NULL, &input_state_consume_st }, 484 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 485 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 486 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 487 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 488 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 489 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 490 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 491 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 492 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 493 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 494 { 0x7f, 0xff, NULL, NULL }, 495 496 { -1, -1, NULL, NULL } 497}; 498 499/* esc_intermediate state table. */ 500static const struct input_transition input_state_esc_intermediate_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, NULL }, 507 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 508 { 0x7f, 0xff, NULL, NULL }, 509 510 { -1, -1, NULL, NULL } 511}; 512 513/* csi_enter state table. */ 514static const struct input_transition input_state_csi_enter_table[] = { 515 INPUT_STATE_ANYWHERE, 516 517 { 0x00, 0x17, input_c0_dispatch, NULL }, 518 { 0x19, 0x19, input_c0_dispatch, NULL }, 519 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 520 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 521 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 522 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 523 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 524 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 525 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 526 { 0x7f, 0xff, NULL, NULL }, 527 528 { -1, -1, NULL, NULL } 529}; 530 531/* csi_parameter state table. */ 532static const struct input_transition input_state_csi_parameter_table[] = { 533 INPUT_STATE_ANYWHERE, 534 535 { 0x00, 0x17, input_c0_dispatch, NULL }, 536 { 0x19, 0x19, input_c0_dispatch, NULL }, 537 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 538 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 539 { 0x30, 0x39, input_parameter, NULL }, 540 { 0x3a, 0x3a, input_parameter, NULL }, 541 { 0x3b, 0x3b, input_parameter, NULL }, 542 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 543 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 544 { 0x7f, 0xff, NULL, NULL }, 545 546 { -1, -1, NULL, NULL } 547}; 548 549/* csi_intermediate state table. */ 550static const struct input_transition input_state_csi_intermediate_table[] = { 551 INPUT_STATE_ANYWHERE, 552 553 { 0x00, 0x17, input_c0_dispatch, NULL }, 554 { 0x19, 0x19, input_c0_dispatch, NULL }, 555 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 556 { 0x20, 0x2f, input_intermediate, NULL }, 557 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 558 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 559 { 0x7f, 0xff, NULL, NULL }, 560 561 { -1, -1, NULL, NULL } 562}; 563 564/* csi_ignore state table. */ 565static const struct input_transition input_state_csi_ignore_table[] = { 566 INPUT_STATE_ANYWHERE, 567 568 { 0x00, 0x17, input_c0_dispatch, NULL }, 569 { 0x19, 0x19, input_c0_dispatch, NULL }, 570 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 571 { 0x20, 0x3f, NULL, NULL }, 572 { 0x40, 0x7e, NULL, &input_state_ground }, 573 { 0x7f, 0xff, NULL, NULL }, 574 575 { -1, -1, NULL, NULL } 576}; 577 578/* dcs_enter state table. */ 579static const struct input_transition input_state_dcs_enter_table[] = { 580 INPUT_STATE_ANYWHERE, 581 582 { 0x00, 0x17, NULL, NULL }, 583 { 0x19, 0x19, NULL, NULL }, 584 { 0x1c, 0x1f, NULL, NULL }, 585 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 586 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 587 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 588 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 589 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 590 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 591 { 0x7f, 0xff, NULL, NULL }, 592 593 { -1, -1, NULL, NULL } 594}; 595 596/* dcs_parameter state table. */ 597static const struct input_transition input_state_dcs_parameter_table[] = { 598 INPUT_STATE_ANYWHERE, 599 600 { 0x00, 0x17, NULL, NULL }, 601 { 0x19, 0x19, NULL, NULL }, 602 { 0x1c, 0x1f, NULL, NULL }, 603 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 604 { 0x30, 0x39, input_parameter, NULL }, 605 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 606 { 0x3b, 0x3b, input_parameter, NULL }, 607 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 608 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 609 { 0x7f, 0xff, NULL, NULL }, 610 611 { -1, -1, NULL, NULL } 612}; 613 614/* dcs_intermediate state table. */ 615static const struct input_transition input_state_dcs_intermediate_table[] = { 616 INPUT_STATE_ANYWHERE, 617 618 { 0x00, 0x17, NULL, NULL }, 619 { 0x19, 0x19, NULL, NULL }, 620 { 0x1c, 0x1f, NULL, NULL }, 621 { 0x20, 0x2f, input_intermediate, NULL }, 622 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 623 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 624 { 0x7f, 0xff, NULL, NULL }, 625 626 { -1, -1, NULL, NULL } 627}; 628 629/* dcs_handler state table. */ 630static const struct input_transition input_state_dcs_handler_table[] = { 631 /* No INPUT_STATE_ANYWHERE */ 632 633 { 0x00, 0x1a, input_input, NULL }, 634 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 635 { 0x1c, 0xff, input_input, NULL }, 636 637 { -1, -1, NULL, NULL } 638}; 639 640/* dcs_escape state table. */ 641static const struct input_transition input_state_dcs_escape_table[] = { 642 /* No INPUT_STATE_ANYWHERE */ 643 644 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 645 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 646 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 647 648 { -1, -1, NULL, NULL } 649}; 650 651/* dcs_ignore state table. */ 652static const struct input_transition input_state_dcs_ignore_table[] = { 653 INPUT_STATE_ANYWHERE, 654 655 { 0x00, 0x17, NULL, NULL }, 656 { 0x19, 0x19, NULL, NULL }, 657 { 0x1c, 0x1f, NULL, NULL }, 658 { 0x20, 0xff, NULL, NULL }, 659 660 { -1, -1, NULL, NULL } 661}; 662 663/* osc_string state table. */ 664static const struct input_transition input_state_osc_string_table[] = { 665 INPUT_STATE_ANYWHERE, 666 667 { 0x00, 0x06, NULL, NULL }, 668 { 0x07, 0x07, input_end_bel, &input_state_ground }, 669 { 0x08, 0x17, NULL, NULL }, 670 { 0x19, 0x19, NULL, NULL }, 671 { 0x1c, 0x1f, NULL, NULL }, 672 { 0x20, 0xff, input_input, NULL }, 673 674 { -1, -1, NULL, NULL } 675}; 676 677/* apc_string state table. */ 678static const struct input_transition input_state_apc_string_table[] = { 679 INPUT_STATE_ANYWHERE, 680 681 { 0x00, 0x17, NULL, NULL }, 682 { 0x19, 0x19, NULL, NULL }, 683 { 0x1c, 0x1f, NULL, NULL }, 684 { 0x20, 0xff, input_input, NULL }, 685 686 { -1, -1, NULL, NULL } 687}; 688 689/* rename_string state table. */ 690static const struct input_transition input_state_rename_string_table[] = { 691 INPUT_STATE_ANYWHERE, 692 693 { 0x00, 0x17, NULL, NULL }, 694 { 0x19, 0x19, NULL, NULL }, 695 { 0x1c, 0x1f, NULL, NULL }, 696 { 0x20, 0xff, input_input, NULL }, 697 698 { -1, -1, NULL, NULL } 699}; 700 701/* consume_st state table. */ 702static const struct input_transition input_state_consume_st_table[] = { 703 INPUT_STATE_ANYWHERE, 704 705 { 0x00, 0x17, NULL, NULL }, 706 { 0x19, 0x19, NULL, NULL }, 707 { 0x1c, 0x1f, NULL, NULL }, 708 { 0x20, 0xff, NULL, NULL }, 709 710 { -1, -1, NULL, NULL } 711}; 712 713/* Input table compare. */ 714static int 715input_table_compare(const void *key, const void *value) 716{ 717 const struct input_ctx *ictx = key; 718 const struct input_table_entry *entry = value; 719 720 if (ictx->ch != entry->ch) 721 return (ictx->ch - entry->ch); 722 return (strcmp(ictx->interm_buf, entry->interm)); 723} 724 725/* 726 * Timer - if this expires then have been waiting for a terminator for too 727 * long, so reset to ground. 728 */ 729static void 730input_timer_callback(__unused int fd, __unused short events, void *arg) 731{ 732 struct input_ctx *ictx = arg; 733 struct window_pane *wp = ictx->wp; 734 735 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 736 input_reset(wp, 0); 737} 738 739/* Start the timer. */ 740static void 741input_start_timer(struct input_ctx *ictx) 742{ 743 struct timeval tv = { .tv_usec = 100000 }; 744 745 event_del(&ictx->timer); 746 event_add(&ictx->timer, &tv); 747} 748 749/* Reset cell state to default. */ 750static void 751input_reset_cell(struct input_ctx *ictx) 752{ 753 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 754 ictx->cell.set = 0; 755 ictx->cell.g0set = ictx->cell.g1set = 0; 756 757 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 758 ictx->old_cx = 0; 759 ictx->old_cy = 0; 760} 761 762/* Save screen state. */ 763static void 764input_save_state(struct input_ctx *ictx) 765{ 766 struct screen_write_ctx *sctx = &ictx->ctx; 767 struct screen *s = sctx->s; 768 769 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 770 ictx->old_cx = s->cx; 771 ictx->old_cy = s->cy; 772 ictx->old_mode = s->mode; 773} 774 775static void 776input_restore_state(struct input_ctx *ictx) 777{ 778 struct screen_write_ctx *sctx = &ictx->ctx; 779 780 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 781 if (ictx->old_mode & MODE_ORIGIN) 782 screen_write_mode_set(sctx, MODE_ORIGIN); 783 else 784 screen_write_mode_clear(sctx, MODE_ORIGIN); 785 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 786} 787 788/* Initialise input parser. */ 789void 790input_init(struct window_pane *wp) 791{ 792 struct input_ctx *ictx; 793 794 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 795 796 ictx->input_space = INPUT_BUF_START; 797 ictx->input_buf = xmalloc(INPUT_BUF_START); 798 799 ictx->since_ground = evbuffer_new(); 800 if (ictx->since_ground == NULL) 801 fatalx("out of memory"); 802 803 evtimer_set(&ictx->timer, input_timer_callback, ictx); 804 805 input_reset(wp, 0); 806} 807 808/* Destroy input parser. */ 809void 810input_free(struct window_pane *wp) 811{ 812 struct input_ctx *ictx = wp->ictx; 813 u_int i; 814 815 for (i = 0; i < ictx->param_list_len; i++) { 816 if (ictx->param_list[i].type == INPUT_STRING) 817 free(ictx->param_list[i].str); 818 } 819 820 event_del(&ictx->timer); 821 822 free(ictx->input_buf); 823 evbuffer_free(ictx->since_ground); 824 825 free(ictx); 826 wp->ictx = NULL; 827} 828 829/* Reset input state and clear screen. */ 830void 831input_reset(struct window_pane *wp, int clear) 832{ 833 struct input_ctx *ictx = wp->ictx; 834 struct screen_write_ctx *sctx = &ictx->ctx; 835 836 input_reset_cell(ictx); 837 838 if (clear) { 839 if (TAILQ_EMPTY(&wp->modes)) 840 screen_write_start(sctx, wp, &wp->base); 841 else 842 screen_write_start(sctx, NULL, &wp->base); 843 screen_write_reset(sctx); 844 screen_write_stop(sctx); 845 } 846 847 input_clear(ictx); 848 849 ictx->last = -1; 850 851 ictx->state = &input_state_ground; 852 ictx->flags = 0; 853} 854 855/* Return pending data. */ 856struct evbuffer * 857input_pending(struct window_pane *wp) 858{ 859 return (wp->ictx->since_ground); 860} 861 862/* Change input state. */ 863static void 864input_set_state(struct window_pane *wp, const struct input_transition *itr) 865{ 866 struct input_ctx *ictx = wp->ictx; 867 868 if (ictx->state->exit != NULL) 869 ictx->state->exit(ictx); 870 ictx->state = itr->state; 871 if (ictx->state->enter != NULL) 872 ictx->state->enter(ictx); 873} 874 875/* Parse input. */ 876void 877input_parse(struct window_pane *wp) 878{ 879 struct evbuffer *evb = wp->event->input; 880 881 input_parse_buffer(wp, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb)); 882 evbuffer_drain(evb, EVBUFFER_LENGTH(evb)); 883} 884 885/* Parse given input. */ 886void 887input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 888{ 889 struct input_ctx *ictx = wp->ictx; 890 struct screen_write_ctx *sctx = &ictx->ctx; 891 const struct input_state *state = NULL; 892 const struct input_transition *itr = NULL; 893 size_t off = 0; 894 895 if (len == 0) 896 return; 897 898 window_update_activity(wp->window); 899 wp->flags |= PANE_CHANGED; 900 notify_input(wp, buf, len); 901 902 /* 903 * Open the screen. Use NULL wp if there is a mode set as don't want to 904 * update the tty. 905 */ 906 if (TAILQ_EMPTY(&wp->modes)) 907 screen_write_start(sctx, wp, &wp->base); 908 else 909 screen_write_start(sctx, NULL, &wp->base); 910 ictx->wp = wp; 911 912 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 913 ictx->state->name, len, (int)len, buf); 914 915 /* Parse the input. */ 916 while (off < len) { 917 ictx->ch = buf[off++]; 918 919 /* Find the transition. */ 920 if (ictx->state != state || 921 itr == NULL || 922 ictx->ch < itr->first || 923 ictx->ch > itr->last) { 924 itr = ictx->state->transitions; 925 while (itr->first != -1 && itr->last != -1) { 926 if (ictx->ch >= itr->first && 927 ictx->ch <= itr->last) 928 break; 929 itr++; 930 } 931 if (itr->first == -1 || itr->last == -1) { 932 /* No transition? Eh? */ 933 fatalx("no transition from state"); 934 } 935 } 936 state = ictx->state; 937 938 /* 939 * Any state except print stops the current collection. This is 940 * an optimization to avoid checking if the attributes have 941 * changed for every character. It will stop unnecessarily for 942 * sequences that don't make a terminal change, but they should 943 * be the minority. 944 */ 945 if (itr->handler != input_print) 946 screen_write_collect_end(sctx); 947 948 /* 949 * Execute the handler, if any. Don't switch state if it 950 * returns non-zero. 951 */ 952 if (itr->handler != NULL && itr->handler(ictx) != 0) 953 continue; 954 955 /* And switch state, if necessary. */ 956 if (itr->state != NULL) 957 input_set_state(wp, itr); 958 959 /* If not in ground state, save input. */ 960 if (ictx->state != &input_state_ground) 961 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 962 } 963 964 /* Close the screen. */ 965 screen_write_stop(sctx); 966} 967 968/* Split the parameter list (if any). */ 969static int 970input_split(struct input_ctx *ictx) 971{ 972 const char *errstr; 973 char *ptr, *out; 974 struct input_param *ip; 975 u_int i; 976 977 for (i = 0; i < ictx->param_list_len; i++) { 978 if (ictx->param_list[i].type == INPUT_STRING) 979 free(ictx->param_list[i].str); 980 } 981 ictx->param_list_len = 0; 982 983 if (ictx->param_len == 0) 984 return (0); 985 ip = &ictx->param_list[0]; 986 987 ptr = ictx->param_buf; 988 while ((out = strsep(&ptr, ";")) != NULL) { 989 if (*out == '\0') 990 ip->type = INPUT_MISSING; 991 else { 992 if (strchr(out, ':') != NULL) { 993 ip->type = INPUT_STRING; 994 ip->str = xstrdup(out); 995 } else { 996 ip->type = INPUT_NUMBER; 997 ip->num = strtonum(out, 0, INT_MAX, &errstr); 998 if (errstr != NULL) 999 return (-1); 1000 } 1001 } 1002 ip = &ictx->param_list[++ictx->param_list_len]; 1003 if (ictx->param_list_len == nitems(ictx->param_list)) 1004 return (-1); 1005 } 1006 1007 for (i = 0; i < ictx->param_list_len; i++) { 1008 ip = &ictx->param_list[i]; 1009 if (ip->type == INPUT_MISSING) 1010 log_debug("parameter %u: missing", i); 1011 else if (ip->type == INPUT_STRING) 1012 log_debug("parameter %u: string %s", i, ip->str); 1013 else if (ip->type == INPUT_NUMBER) 1014 log_debug("parameter %u: number %d", i, ip->num); 1015 } 1016 1017 return (0); 1018} 1019 1020/* Get an argument or return default value. */ 1021static int 1022input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1023{ 1024 struct input_param *ip; 1025 int retval; 1026 1027 if (validx >= ictx->param_list_len) 1028 return (defval); 1029 ip = &ictx->param_list[validx]; 1030 if (ip->type == INPUT_MISSING) 1031 return (defval); 1032 if (ip->type == INPUT_STRING) 1033 return (-1); 1034 retval = ip->num; 1035 if (retval < minval) 1036 return (minval); 1037 return (retval); 1038} 1039 1040/* Reply to terminal query. */ 1041static void 1042input_reply(struct input_ctx *ictx, const char *fmt, ...) 1043{ 1044 va_list ap; 1045 char *reply; 1046 1047 va_start(ap, fmt); 1048 xvasprintf(&reply, fmt, ap); 1049 va_end(ap); 1050 1051 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 1052 free(reply); 1053} 1054 1055/* Clear saved state. */ 1056static void 1057input_clear(struct input_ctx *ictx) 1058{ 1059 event_del(&ictx->timer); 1060 1061 *ictx->interm_buf = '\0'; 1062 ictx->interm_len = 0; 1063 1064 *ictx->param_buf = '\0'; 1065 ictx->param_len = 0; 1066 1067 *ictx->input_buf = '\0'; 1068 ictx->input_len = 0; 1069 1070 ictx->input_end = INPUT_END_ST; 1071 1072 ictx->flags &= ~INPUT_DISCARD; 1073} 1074 1075/* Reset for ground state. */ 1076static void 1077input_ground(struct input_ctx *ictx) 1078{ 1079 event_del(&ictx->timer); 1080 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1081 1082 if (ictx->input_space > INPUT_BUF_START) { 1083 ictx->input_space = INPUT_BUF_START; 1084 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1085 } 1086} 1087 1088/* Output this character to the screen. */ 1089static int 1090input_print(struct input_ctx *ictx) 1091{ 1092 struct screen_write_ctx *sctx = &ictx->ctx; 1093 int set; 1094 1095 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1096 1097 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1098 if (set == 1) 1099 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1100 else 1101 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1102 1103 utf8_set(&ictx->cell.cell.data, ictx->ch); 1104 screen_write_collect_add(sctx, &ictx->cell.cell); 1105 ictx->last = ictx->ch; 1106 1107 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1108 1109 return (0); 1110} 1111 1112/* Collect intermediate string. */ 1113static int 1114input_intermediate(struct input_ctx *ictx) 1115{ 1116 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1117 ictx->flags |= INPUT_DISCARD; 1118 else { 1119 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1120 ictx->interm_buf[ictx->interm_len] = '\0'; 1121 } 1122 1123 return (0); 1124} 1125 1126/* Collect parameter string. */ 1127static int 1128input_parameter(struct input_ctx *ictx) 1129{ 1130 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1131 ictx->flags |= INPUT_DISCARD; 1132 else { 1133 ictx->param_buf[ictx->param_len++] = ictx->ch; 1134 ictx->param_buf[ictx->param_len] = '\0'; 1135 } 1136 1137 return (0); 1138} 1139 1140/* Collect input string. */ 1141static int 1142input_input(struct input_ctx *ictx) 1143{ 1144 size_t available; 1145 1146 available = ictx->input_space; 1147 while (ictx->input_len + 1 >= available) { 1148 available *= 2; 1149 if (available > INPUT_BUF_LIMIT) { 1150 ictx->flags |= INPUT_DISCARD; 1151 return (0); 1152 } 1153 ictx->input_buf = xrealloc(ictx->input_buf, available); 1154 ictx->input_space = available; 1155 } 1156 ictx->input_buf[ictx->input_len++] = ictx->ch; 1157 ictx->input_buf[ictx->input_len] = '\0'; 1158 1159 return (0); 1160} 1161 1162/* Execute C0 control sequence. */ 1163static int 1164input_c0_dispatch(struct input_ctx *ictx) 1165{ 1166 struct screen_write_ctx *sctx = &ictx->ctx; 1167 struct window_pane *wp = ictx->wp; 1168 struct screen *s = sctx->s; 1169 1170 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1171 1172 log_debug("%s: '%c'", __func__, ictx->ch); 1173 1174 switch (ictx->ch) { 1175 case '\000': /* NUL */ 1176 break; 1177 case '\007': /* BEL */ 1178 alerts_queue(wp->window, WINDOW_BELL); 1179 break; 1180 case '\010': /* BS */ 1181 screen_write_backspace(sctx); 1182 break; 1183 case '\011': /* HT */ 1184 /* Don't tab beyond the end of the line. */ 1185 if (s->cx >= screen_size_x(s) - 1) 1186 break; 1187 1188 /* Find the next tab point, or use the last column if none. */ 1189 do { 1190 s->cx++; 1191 if (bit_test(s->tabs, s->cx)) 1192 break; 1193 } while (s->cx < screen_size_x(s) - 1); 1194 break; 1195 case '\012': /* LF */ 1196 case '\013': /* VT */ 1197 case '\014': /* FF */ 1198 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1199 if (s->mode & MODE_CRLF) 1200 screen_write_carriagereturn(sctx); 1201 break; 1202 case '\015': /* CR */ 1203 screen_write_carriagereturn(sctx); 1204 break; 1205 case '\016': /* SO */ 1206 ictx->cell.set = 1; 1207 break; 1208 case '\017': /* SI */ 1209 ictx->cell.set = 0; 1210 break; 1211 default: 1212 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1213 break; 1214 } 1215 1216 ictx->last = -1; 1217 return (0); 1218} 1219 1220/* Execute escape sequence. */ 1221static int 1222input_esc_dispatch(struct input_ctx *ictx) 1223{ 1224 struct screen_write_ctx *sctx = &ictx->ctx; 1225 struct screen *s = sctx->s; 1226 struct input_table_entry *entry; 1227 1228 if (ictx->flags & INPUT_DISCARD) 1229 return (0); 1230 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1231 1232 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1233 sizeof input_esc_table[0], input_table_compare); 1234 if (entry == NULL) { 1235 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1236 return (0); 1237 } 1238 1239 switch (entry->type) { 1240 case INPUT_ESC_RIS: 1241 window_pane_reset_palette(ictx->wp); 1242 input_reset_cell(ictx); 1243 screen_write_reset(sctx); 1244 break; 1245 case INPUT_ESC_IND: 1246 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1247 break; 1248 case INPUT_ESC_NEL: 1249 screen_write_carriagereturn(sctx); 1250 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1251 break; 1252 case INPUT_ESC_HTS: 1253 if (s->cx < screen_size_x(s)) 1254 bit_set(s->tabs, s->cx); 1255 break; 1256 case INPUT_ESC_RI: 1257 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1258 break; 1259 case INPUT_ESC_DECKPAM: 1260 screen_write_mode_set(sctx, MODE_KKEYPAD); 1261 break; 1262 case INPUT_ESC_DECKPNM: 1263 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1264 break; 1265 case INPUT_ESC_DECSC: 1266 input_save_state(ictx); 1267 break; 1268 case INPUT_ESC_DECRC: 1269 input_restore_state(ictx); 1270 break; 1271 case INPUT_ESC_DECALN: 1272 screen_write_alignmenttest(sctx); 1273 break; 1274 case INPUT_ESC_SCSG0_ON: 1275 ictx->cell.g0set = 1; 1276 break; 1277 case INPUT_ESC_SCSG0_OFF: 1278 ictx->cell.g0set = 0; 1279 break; 1280 case INPUT_ESC_SCSG1_ON: 1281 ictx->cell.g1set = 1; 1282 break; 1283 case INPUT_ESC_SCSG1_OFF: 1284 ictx->cell.g1set = 0; 1285 break; 1286 case INPUT_ESC_ST: 1287 /* ST terminates OSC but the state transition already did it. */ 1288 break; 1289 } 1290 1291 ictx->last = -1; 1292 return (0); 1293} 1294 1295/* Execute control sequence. */ 1296static int 1297input_csi_dispatch(struct input_ctx *ictx) 1298{ 1299 struct screen_write_ctx *sctx = &ictx->ctx; 1300 struct screen *s = sctx->s; 1301 struct input_table_entry *entry; 1302 int i, n, m; 1303 u_int cx, bg = ictx->cell.cell.bg; 1304 1305 if (ictx->flags & INPUT_DISCARD) 1306 return (0); 1307 1308 log_debug("%s: '%c' \"%s\" \"%s\"", 1309 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1310 1311 if (input_split(ictx) != 0) 1312 return (0); 1313 1314 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1315 sizeof input_csi_table[0], input_table_compare); 1316 if (entry == NULL) { 1317 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1318 return (0); 1319 } 1320 1321 switch (entry->type) { 1322 case INPUT_CSI_CBT: 1323 /* Find the previous tab point, n times. */ 1324 cx = s->cx; 1325 if (cx > screen_size_x(s) - 1) 1326 cx = screen_size_x(s) - 1; 1327 n = input_get(ictx, 0, 1, 1); 1328 if (n == -1) 1329 break; 1330 while (cx > 0 && n-- > 0) { 1331 do 1332 cx--; 1333 while (cx > 0 && !bit_test(s->tabs, cx)); 1334 } 1335 s->cx = cx; 1336 break; 1337 case INPUT_CSI_CUB: 1338 n = input_get(ictx, 0, 1, 1); 1339 if (n != -1) 1340 screen_write_cursorleft(sctx, n); 1341 break; 1342 case INPUT_CSI_CUD: 1343 n = input_get(ictx, 0, 1, 1); 1344 if (n != -1) 1345 screen_write_cursordown(sctx, n); 1346 break; 1347 case INPUT_CSI_CUF: 1348 n = input_get(ictx, 0, 1, 1); 1349 if (n != -1) 1350 screen_write_cursorright(sctx, n); 1351 break; 1352 case INPUT_CSI_CUP: 1353 n = input_get(ictx, 0, 1, 1); 1354 m = input_get(ictx, 1, 1, 1); 1355 if (n != -1 && m != -1) 1356 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1357 break; 1358 case INPUT_CSI_WINOPS: 1359 input_csi_dispatch_winops(ictx); 1360 break; 1361 case INPUT_CSI_CUU: 1362 n = input_get(ictx, 0, 1, 1); 1363 if (n != -1) 1364 screen_write_cursorup(sctx, n); 1365 break; 1366 case INPUT_CSI_CNL: 1367 n = input_get(ictx, 0, 1, 1); 1368 if (n != -1) { 1369 screen_write_carriagereturn(sctx); 1370 screen_write_cursordown(sctx, n); 1371 } 1372 break; 1373 case INPUT_CSI_CPL: 1374 n = input_get(ictx, 0, 1, 1); 1375 if (n != -1) { 1376 screen_write_carriagereturn(sctx); 1377 screen_write_cursorup(sctx, n); 1378 } 1379 break; 1380 case INPUT_CSI_DA: 1381 switch (input_get(ictx, 0, 0, 0)) { 1382 case -1: 1383 break; 1384 case 0: 1385 input_reply(ictx, "\033[?1;2c"); 1386 break; 1387 default: 1388 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1389 break; 1390 } 1391 break; 1392 case INPUT_CSI_DA_TWO: 1393 switch (input_get(ictx, 0, 0, 0)) { 1394 case -1: 1395 break; 1396 case 0: 1397 input_reply(ictx, "\033[>84;0;0c"); 1398 break; 1399 default: 1400 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1401 break; 1402 } 1403 break; 1404 case INPUT_CSI_ECH: 1405 n = input_get(ictx, 0, 1, 1); 1406 if (n != -1) 1407 screen_write_clearcharacter(sctx, n, bg); 1408 break; 1409 case INPUT_CSI_DCH: 1410 n = input_get(ictx, 0, 1, 1); 1411 if (n != -1) 1412 screen_write_deletecharacter(sctx, n, bg); 1413 break; 1414 case INPUT_CSI_DECSTBM: 1415 n = input_get(ictx, 0, 1, 1); 1416 m = input_get(ictx, 1, 1, screen_size_y(s)); 1417 if (n != -1 && m != -1) 1418 screen_write_scrollregion(sctx, n - 1, m - 1); 1419 break; 1420 case INPUT_CSI_DL: 1421 n = input_get(ictx, 0, 1, 1); 1422 if (n != -1) 1423 screen_write_deleteline(sctx, n, bg); 1424 break; 1425 case INPUT_CSI_DSR: 1426 switch (input_get(ictx, 0, 0, 0)) { 1427 case -1: 1428 break; 1429 case 5: 1430 input_reply(ictx, "\033[0n"); 1431 break; 1432 case 6: 1433 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1434 break; 1435 default: 1436 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1437 break; 1438 } 1439 break; 1440 case INPUT_CSI_ED: 1441 switch (input_get(ictx, 0, 0, 0)) { 1442 case -1: 1443 break; 1444 case 0: 1445 screen_write_clearendofscreen(sctx, bg); 1446 break; 1447 case 1: 1448 screen_write_clearstartofscreen(sctx, bg); 1449 break; 1450 case 2: 1451 screen_write_clearscreen(sctx, bg); 1452 break; 1453 case 3: 1454 if (input_get(ictx, 1, 0, 0) == 0) { 1455 /* 1456 * Linux console extension to clear history 1457 * (for example before locking the screen). 1458 */ 1459 screen_write_clearhistory(sctx); 1460 } 1461 break; 1462 default: 1463 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1464 break; 1465 } 1466 break; 1467 case INPUT_CSI_EL: 1468 switch (input_get(ictx, 0, 0, 0)) { 1469 case -1: 1470 break; 1471 case 0: 1472 screen_write_clearendofline(sctx, bg); 1473 break; 1474 case 1: 1475 screen_write_clearstartofline(sctx, bg); 1476 break; 1477 case 2: 1478 screen_write_clearline(sctx, bg); 1479 break; 1480 default: 1481 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1482 break; 1483 } 1484 break; 1485 case INPUT_CSI_HPA: 1486 n = input_get(ictx, 0, 1, 1); 1487 if (n != -1) 1488 screen_write_cursormove(sctx, n - 1, -1, 1); 1489 break; 1490 case INPUT_CSI_ICH: 1491 n = input_get(ictx, 0, 1, 1); 1492 if (n != -1) 1493 screen_write_insertcharacter(sctx, n, bg); 1494 break; 1495 case INPUT_CSI_IL: 1496 n = input_get(ictx, 0, 1, 1); 1497 if (n != -1) 1498 screen_write_insertline(sctx, n, bg); 1499 break; 1500 case INPUT_CSI_REP: 1501 n = input_get(ictx, 0, 1, 1); 1502 if (n == -1) 1503 break; 1504 1505 if (ictx->last == -1) 1506 break; 1507 ictx->ch = ictx->last; 1508 1509 for (i = 0; i < n; i++) 1510 input_print(ictx); 1511 break; 1512 case INPUT_CSI_RCP: 1513 input_restore_state(ictx); 1514 break; 1515 case INPUT_CSI_RM: 1516 input_csi_dispatch_rm(ictx); 1517 break; 1518 case INPUT_CSI_RM_PRIVATE: 1519 input_csi_dispatch_rm_private(ictx); 1520 break; 1521 case INPUT_CSI_SCP: 1522 input_save_state(ictx); 1523 break; 1524 case INPUT_CSI_SGR: 1525 input_csi_dispatch_sgr(ictx); 1526 break; 1527 case INPUT_CSI_SM: 1528 input_csi_dispatch_sm(ictx); 1529 break; 1530 case INPUT_CSI_SM_PRIVATE: 1531 input_csi_dispatch_sm_private(ictx); 1532 break; 1533 case INPUT_CSI_SU: 1534 n = input_get(ictx, 0, 1, 1); 1535 if (n != -1) 1536 screen_write_scrollup(sctx, n, bg); 1537 break; 1538 case INPUT_CSI_SD: 1539 n = input_get(ictx, 0, 1, 1); 1540 if (n != -1) 1541 screen_write_scrolldown(sctx, n, bg); 1542 break; 1543 case INPUT_CSI_TBC: 1544 switch (input_get(ictx, 0, 0, 0)) { 1545 case -1: 1546 break; 1547 case 0: 1548 if (s->cx < screen_size_x(s)) 1549 bit_clear(s->tabs, s->cx); 1550 break; 1551 case 3: 1552 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1553 break; 1554 default: 1555 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1556 break; 1557 } 1558 break; 1559 case INPUT_CSI_VPA: 1560 n = input_get(ictx, 0, 1, 1); 1561 if (n != -1) 1562 screen_write_cursormove(sctx, -1, n - 1, 1); 1563 break; 1564 case INPUT_CSI_DECSCUSR: 1565 n = input_get(ictx, 0, 0, 0); 1566 if (n != -1) 1567 screen_set_cursor_style(s, n); 1568 break; 1569 } 1570 1571 ictx->last = -1; 1572 return (0); 1573} 1574 1575/* Handle CSI RM. */ 1576static void 1577input_csi_dispatch_rm(struct input_ctx *ictx) 1578{ 1579 struct screen_write_ctx *sctx = &ictx->ctx; 1580 u_int i; 1581 1582 for (i = 0; i < ictx->param_list_len; i++) { 1583 switch (input_get(ictx, i, 0, -1)) { 1584 case -1: 1585 break; 1586 case 4: /* IRM */ 1587 screen_write_mode_clear(sctx, MODE_INSERT); 1588 break; 1589 case 34: 1590 screen_write_mode_set(sctx, MODE_BLINKING); 1591 break; 1592 default: 1593 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1594 break; 1595 } 1596 } 1597} 1598 1599/* Handle CSI private RM. */ 1600static void 1601input_csi_dispatch_rm_private(struct input_ctx *ictx) 1602{ 1603 struct screen_write_ctx *sctx = &ictx->ctx; 1604 struct window_pane *wp = ictx->wp; 1605 u_int i; 1606 1607 for (i = 0; i < ictx->param_list_len; i++) { 1608 switch (input_get(ictx, i, 0, -1)) { 1609 case -1: 1610 break; 1611 case 1: /* DECCKM */ 1612 screen_write_mode_clear(sctx, MODE_KCURSOR); 1613 break; 1614 case 3: /* DECCOLM */ 1615 screen_write_cursormove(sctx, 0, 0, 1); 1616 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1617 break; 1618 case 6: /* DECOM */ 1619 screen_write_mode_clear(sctx, MODE_ORIGIN); 1620 screen_write_cursormove(sctx, 0, 0, 1); 1621 break; 1622 case 7: /* DECAWM */ 1623 screen_write_mode_clear(sctx, MODE_WRAP); 1624 break; 1625 case 12: 1626 screen_write_mode_clear(sctx, MODE_BLINKING); 1627 break; 1628 case 25: /* TCEM */ 1629 screen_write_mode_clear(sctx, MODE_CURSOR); 1630 break; 1631 case 1000: 1632 case 1001: 1633 case 1002: 1634 case 1003: 1635 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1636 break; 1637 case 1004: 1638 screen_write_mode_clear(sctx, MODE_FOCUSON); 1639 break; 1640 case 1005: 1641 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1642 break; 1643 case 1006: 1644 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1645 break; 1646 case 47: 1647 case 1047: 1648 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1649 break; 1650 case 1049: 1651 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1652 break; 1653 case 2004: 1654 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1655 break; 1656 default: 1657 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1658 break; 1659 } 1660 } 1661} 1662 1663/* Handle CSI SM. */ 1664static void 1665input_csi_dispatch_sm(struct input_ctx *ictx) 1666{ 1667 struct screen_write_ctx *sctx = &ictx->ctx; 1668 u_int i; 1669 1670 for (i = 0; i < ictx->param_list_len; i++) { 1671 switch (input_get(ictx, i, 0, -1)) { 1672 case -1: 1673 break; 1674 case 4: /* IRM */ 1675 screen_write_mode_set(sctx, MODE_INSERT); 1676 break; 1677 case 34: 1678 screen_write_mode_clear(sctx, MODE_BLINKING); 1679 break; 1680 default: 1681 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1682 break; 1683 } 1684 } 1685} 1686 1687/* Handle CSI private SM. */ 1688static void 1689input_csi_dispatch_sm_private(struct input_ctx *ictx) 1690{ 1691 struct screen_write_ctx *sctx = &ictx->ctx; 1692 struct window_pane *wp = ictx->wp; 1693 u_int i; 1694 1695 for (i = 0; i < ictx->param_list_len; i++) { 1696 switch (input_get(ictx, i, 0, -1)) { 1697 case -1: 1698 break; 1699 case 1: /* DECCKM */ 1700 screen_write_mode_set(sctx, MODE_KCURSOR); 1701 break; 1702 case 3: /* DECCOLM */ 1703 screen_write_cursormove(sctx, 0, 0, 1); 1704 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1705 break; 1706 case 6: /* DECOM */ 1707 screen_write_mode_set(sctx, MODE_ORIGIN); 1708 screen_write_cursormove(sctx, 0, 0, 1); 1709 break; 1710 case 7: /* DECAWM */ 1711 screen_write_mode_set(sctx, MODE_WRAP); 1712 break; 1713 case 12: 1714 screen_write_mode_set(sctx, MODE_BLINKING); 1715 break; 1716 case 25: /* TCEM */ 1717 screen_write_mode_set(sctx, MODE_CURSOR); 1718 break; 1719 case 1000: 1720 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1721 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1722 break; 1723 case 1002: 1724 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1725 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1726 break; 1727 case 1003: 1728 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1729 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1730 break; 1731 case 1004: 1732 if (sctx->s->mode & MODE_FOCUSON) 1733 break; 1734 screen_write_mode_set(sctx, MODE_FOCUSON); 1735 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1736 break; 1737 case 1005: 1738 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1739 break; 1740 case 1006: 1741 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1742 break; 1743 case 47: 1744 case 1047: 1745 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1746 break; 1747 case 1049: 1748 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1749 break; 1750 case 2004: 1751 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1752 break; 1753 default: 1754 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1755 break; 1756 } 1757 } 1758} 1759 1760/* Handle CSI window operations. */ 1761static void 1762input_csi_dispatch_winops(struct input_ctx *ictx) 1763{ 1764 struct screen_write_ctx *sctx = &ictx->ctx; 1765 struct window_pane *wp = ictx->wp; 1766 int n, m; 1767 1768 m = 0; 1769 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1770 switch (n) { 1771 case 1: 1772 case 2: 1773 case 5: 1774 case 6: 1775 case 7: 1776 case 11: 1777 case 13: 1778 case 14: 1779 case 19: 1780 case 20: 1781 case 21: 1782 case 24: 1783 break; 1784 case 3: 1785 case 4: 1786 case 8: 1787 m++; 1788 if (input_get(ictx, m, 0, -1) == -1) 1789 return; 1790 /* FALLTHROUGH */ 1791 case 9: 1792 case 10: 1793 m++; 1794 if (input_get(ictx, m, 0, -1) == -1) 1795 return; 1796 break; 1797 case 22: 1798 m++; 1799 switch (input_get(ictx, m, 0, -1)) { 1800 case -1: 1801 return; 1802 case 0: 1803 case 2: 1804 screen_push_title(sctx->s); 1805 break; 1806 } 1807 break; 1808 case 23: 1809 m++; 1810 switch (input_get(ictx, m, 0, -1)) { 1811 case -1: 1812 return; 1813 case 0: 1814 case 2: 1815 screen_pop_title(sctx->s); 1816 server_status_window(ictx->wp->window); 1817 break; 1818 } 1819 break; 1820 case 18: 1821 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1822 break; 1823 default: 1824 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1825 break; 1826 } 1827 m++; 1828 } 1829} 1830 1831/* Helper for 256 colour SGR. */ 1832static int 1833input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1834{ 1835 struct grid_cell *gc = &ictx->cell.cell; 1836 1837 if (c == -1 || c > 255) { 1838 if (fgbg == 38) 1839 gc->fg = 8; 1840 else if (fgbg == 48) 1841 gc->bg = 8; 1842 } else { 1843 if (fgbg == 38) 1844 gc->fg = c | COLOUR_FLAG_256; 1845 else if (fgbg == 48) 1846 gc->bg = c | COLOUR_FLAG_256; 1847 else if (fgbg == 58) 1848 gc->us = c | COLOUR_FLAG_256; 1849 } 1850 return (1); 1851} 1852 1853/* Handle CSI SGR for 256 colours. */ 1854static void 1855input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1856{ 1857 int c; 1858 1859 c = input_get(ictx, (*i) + 1, 0, -1); 1860 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1861 (*i)++; 1862} 1863 1864/* Helper for RGB colour SGR. */ 1865static int 1866input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1867 int b) 1868{ 1869 struct grid_cell *gc = &ictx->cell.cell; 1870 1871 if (r == -1 || r > 255) 1872 return (0); 1873 if (g == -1 || g > 255) 1874 return (0); 1875 if (b == -1 || b > 255) 1876 return (0); 1877 1878 if (fgbg == 38) 1879 gc->fg = colour_join_rgb(r, g, b); 1880 else if (fgbg == 48) 1881 gc->bg = colour_join_rgb(r, g, b); 1882 else if (fgbg == 58) 1883 gc->us = colour_join_rgb(r, g, b); 1884 return (1); 1885} 1886 1887/* Handle CSI SGR for RGB colours. */ 1888static void 1889input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1890{ 1891 int r, g, b; 1892 1893 r = input_get(ictx, (*i) + 1, 0, -1); 1894 g = input_get(ictx, (*i) + 2, 0, -1); 1895 b = input_get(ictx, (*i) + 3, 0, -1); 1896 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1897 (*i) += 3; 1898} 1899 1900/* Handle CSI SGR with a ISO parameter. */ 1901static void 1902input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1903{ 1904 struct grid_cell *gc = &ictx->cell.cell; 1905 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1906 int p[8]; 1907 u_int n; 1908 const char *errstr; 1909 1910 for (n = 0; n < nitems(p); n++) 1911 p[n] = -1; 1912 n = 0; 1913 1914 ptr = copy = xstrdup(s); 1915 while ((out = strsep(&ptr, ":")) != NULL) { 1916 if (*out != '\0') { 1917 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1918 if (errstr != NULL || n == nitems(p)) { 1919 free(copy); 1920 return; 1921 } 1922 } else 1923 n++; 1924 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1925 } 1926 free(copy); 1927 1928 if (n == 0) 1929 return; 1930 if (p[0] == 4) { 1931 if (n != 2) 1932 return; 1933 switch (p[1]) { 1934 case 0: 1935 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1936 break; 1937 case 1: 1938 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1939 gc->attr |= GRID_ATTR_UNDERSCORE; 1940 break; 1941 case 2: 1942 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1943 gc->attr |= GRID_ATTR_UNDERSCORE_2; 1944 break; 1945 case 3: 1946 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1947 gc->attr |= GRID_ATTR_UNDERSCORE_3; 1948 break; 1949 case 4: 1950 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1951 gc->attr |= GRID_ATTR_UNDERSCORE_4; 1952 break; 1953 case 5: 1954 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1955 gc->attr |= GRID_ATTR_UNDERSCORE_5; 1956 break; 1957 } 1958 return; 1959 } 1960 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 1961 return; 1962 switch (p[1]) { 1963 case 2: 1964 if (n < 3) 1965 break; 1966 if (n == 5) 1967 i = 2; 1968 else 1969 i = 3; 1970 if (n < i + 3) 1971 break; 1972 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 1973 p[i + 2]); 1974 break; 1975 case 5: 1976 if (n < 3) 1977 break; 1978 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 1979 break; 1980 } 1981} 1982 1983/* Handle CSI SGR. */ 1984static void 1985input_csi_dispatch_sgr(struct input_ctx *ictx) 1986{ 1987 struct grid_cell *gc = &ictx->cell.cell; 1988 u_int i; 1989 int n; 1990 1991 if (ictx->param_list_len == 0) { 1992 memcpy(gc, &grid_default_cell, sizeof *gc); 1993 return; 1994 } 1995 1996 for (i = 0; i < ictx->param_list_len; i++) { 1997 if (ictx->param_list[i].type == INPUT_STRING) { 1998 input_csi_dispatch_sgr_colon(ictx, i); 1999 continue; 2000 } 2001 n = input_get(ictx, i, 0, 0); 2002 if (n == -1) 2003 continue; 2004 2005 if (n == 38 || n == 48 || n == 58) { 2006 i++; 2007 switch (input_get(ictx, i, 0, -1)) { 2008 case 2: 2009 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2010 break; 2011 case 5: 2012 input_csi_dispatch_sgr_256(ictx, n, &i); 2013 break; 2014 } 2015 continue; 2016 } 2017 2018 switch (n) { 2019 case 0: 2020 memcpy(gc, &grid_default_cell, sizeof *gc); 2021 break; 2022 case 1: 2023 gc->attr |= GRID_ATTR_BRIGHT; 2024 break; 2025 case 2: 2026 gc->attr |= GRID_ATTR_DIM; 2027 break; 2028 case 3: 2029 gc->attr |= GRID_ATTR_ITALICS; 2030 break; 2031 case 4: 2032 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2033 gc->attr |= GRID_ATTR_UNDERSCORE; 2034 break; 2035 case 5: 2036 gc->attr |= GRID_ATTR_BLINK; 2037 break; 2038 case 7: 2039 gc->attr |= GRID_ATTR_REVERSE; 2040 break; 2041 case 8: 2042 gc->attr |= GRID_ATTR_HIDDEN; 2043 break; 2044 case 9: 2045 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2046 break; 2047 case 22: 2048 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2049 break; 2050 case 23: 2051 gc->attr &= ~GRID_ATTR_ITALICS; 2052 break; 2053 case 24: 2054 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2055 break; 2056 case 25: 2057 gc->attr &= ~GRID_ATTR_BLINK; 2058 break; 2059 case 27: 2060 gc->attr &= ~GRID_ATTR_REVERSE; 2061 break; 2062 case 28: 2063 gc->attr &= ~GRID_ATTR_HIDDEN; 2064 break; 2065 case 29: 2066 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2067 break; 2068 case 30: 2069 case 31: 2070 case 32: 2071 case 33: 2072 case 34: 2073 case 35: 2074 case 36: 2075 case 37: 2076 gc->fg = n - 30; 2077 break; 2078 case 39: 2079 gc->fg = 8; 2080 break; 2081 case 40: 2082 case 41: 2083 case 42: 2084 case 43: 2085 case 44: 2086 case 45: 2087 case 46: 2088 case 47: 2089 gc->bg = n - 40; 2090 break; 2091 case 49: 2092 gc->bg = 8; 2093 break; 2094 case 53: 2095 gc->attr |= GRID_ATTR_OVERLINE; 2096 break; 2097 case 55: 2098 gc->attr &= ~GRID_ATTR_OVERLINE; 2099 break; 2100 case 59: 2101 gc->us = 0; 2102 break; 2103 case 90: 2104 case 91: 2105 case 92: 2106 case 93: 2107 case 94: 2108 case 95: 2109 case 96: 2110 case 97: 2111 gc->fg = n; 2112 break; 2113 case 100: 2114 case 101: 2115 case 102: 2116 case 103: 2117 case 104: 2118 case 105: 2119 case 106: 2120 case 107: 2121 gc->bg = n - 10; 2122 break; 2123 } 2124 } 2125} 2126 2127/* End of input with BEL. */ 2128static int 2129input_end_bel(struct input_ctx *ictx) 2130{ 2131 log_debug("%s", __func__); 2132 2133 ictx->input_end = INPUT_END_BEL; 2134 2135 return (0); 2136} 2137 2138/* DCS string started. */ 2139static void 2140input_enter_dcs(struct input_ctx *ictx) 2141{ 2142 log_debug("%s", __func__); 2143 2144 input_clear(ictx); 2145 input_start_timer(ictx); 2146 ictx->last = -1; 2147} 2148 2149/* DCS terminator (ST) received. */ 2150static int 2151input_dcs_dispatch(struct input_ctx *ictx) 2152{ 2153 struct screen_write_ctx *sctx = &ictx->ctx; 2154 u_char *buf = ictx->input_buf; 2155 size_t len = ictx->input_len; 2156 const char prefix[] = "tmux;"; 2157 const u_int prefixlen = (sizeof prefix) - 1; 2158 2159 if (ictx->flags & INPUT_DISCARD) 2160 return (0); 2161 2162 log_debug("%s: \"%s\"", __func__, buf); 2163 2164 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2165 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2166 2167 return (0); 2168} 2169 2170/* OSC string started. */ 2171static void 2172input_enter_osc(struct input_ctx *ictx) 2173{ 2174 log_debug("%s", __func__); 2175 2176 input_clear(ictx); 2177 input_start_timer(ictx); 2178 ictx->last = -1; 2179} 2180 2181/* OSC terminator (ST) received. */ 2182static void 2183input_exit_osc(struct input_ctx *ictx) 2184{ 2185 struct screen_write_ctx *sctx = &ictx->ctx; 2186 u_char *p = ictx->input_buf; 2187 u_int option; 2188 2189 if (ictx->flags & INPUT_DISCARD) 2190 return; 2191 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2192 return; 2193 2194 log_debug("%s: \"%s\" (end %s)", __func__, p, 2195 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2196 2197 option = 0; 2198 while (*p >= '0' && *p <= '9') 2199 option = option * 10 + *p++ - '0'; 2200 if (*p == ';') 2201 p++; 2202 2203 switch (option) { 2204 case 0: 2205 case 2: 2206 if (utf8_isvalid(p)) { 2207 screen_set_title(sctx->s, p); 2208 server_status_window(ictx->wp->window); 2209 } 2210 break; 2211 case 4: 2212 input_osc_4(ictx, p); 2213 break; 2214 case 7: 2215 if (utf8_isvalid(p)) { 2216 screen_set_path(sctx->s, p); 2217 server_status_window(ictx->wp->window); 2218 } 2219 break; 2220 case 10: 2221 input_osc_10(ictx, p); 2222 break; 2223 case 11: 2224 input_osc_11(ictx, p); 2225 break; 2226 case 12: 2227 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2228 screen_set_cursor_colour(sctx->s, p); 2229 break; 2230 case 52: 2231 input_osc_52(ictx, p); 2232 break; 2233 case 104: 2234 input_osc_104(ictx, p); 2235 break; 2236 case 112: 2237 if (*p == '\0') /* no arguments allowed */ 2238 screen_set_cursor_colour(sctx->s, ""); 2239 break; 2240 default: 2241 log_debug("%s: unknown '%u'", __func__, option); 2242 break; 2243 } 2244} 2245 2246/* APC string started. */ 2247static void 2248input_enter_apc(struct input_ctx *ictx) 2249{ 2250 log_debug("%s", __func__); 2251 2252 input_clear(ictx); 2253 input_start_timer(ictx); 2254 ictx->last = -1; 2255} 2256 2257/* APC terminator (ST) received. */ 2258static void 2259input_exit_apc(struct input_ctx *ictx) 2260{ 2261 struct screen_write_ctx *sctx = &ictx->ctx; 2262 2263 if (ictx->flags & INPUT_DISCARD) 2264 return; 2265 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2266 2267 if (!utf8_isvalid(ictx->input_buf)) 2268 return; 2269 screen_set_title(sctx->s, ictx->input_buf); 2270 server_status_window(ictx->wp->window); 2271} 2272 2273/* Rename string started. */ 2274static void 2275input_enter_rename(struct input_ctx *ictx) 2276{ 2277 log_debug("%s", __func__); 2278 2279 input_clear(ictx); 2280 input_start_timer(ictx); 2281 ictx->last = -1; 2282} 2283 2284/* Rename terminator (ST) received. */ 2285static void 2286input_exit_rename(struct input_ctx *ictx) 2287{ 2288 struct window_pane *wp = ictx->wp; 2289 struct options_entry *oe; 2290 2291 if (ictx->flags & INPUT_DISCARD) 2292 return; 2293 if (!options_get_number(ictx->wp->options, "allow-rename")) 2294 return; 2295 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2296 2297 if (!utf8_isvalid(ictx->input_buf)) 2298 return; 2299 2300 if (ictx->input_len == 0) { 2301 oe = options_get(wp->window->options, "automatic-rename"); 2302 if (oe != NULL) 2303 options_remove(oe); 2304 return; 2305 } 2306 window_set_name(ictx->wp->window, ictx->input_buf); 2307 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2308 server_status_window(ictx->wp->window); 2309} 2310 2311/* Open UTF-8 character. */ 2312static int 2313input_top_bit_set(struct input_ctx *ictx) 2314{ 2315 struct screen_write_ctx *sctx = &ictx->ctx; 2316 struct utf8_data *ud = &ictx->utf8data; 2317 2318 ictx->last = -1; 2319 2320 if (!ictx->utf8started) { 2321 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2322 return (0); 2323 ictx->utf8started = 1; 2324 return (0); 2325 } 2326 2327 switch (utf8_append(ud, ictx->ch)) { 2328 case UTF8_MORE: 2329 return (0); 2330 case UTF8_ERROR: 2331 ictx->utf8started = 0; 2332 return (0); 2333 case UTF8_DONE: 2334 break; 2335 } 2336 ictx->utf8started = 0; 2337 2338 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2339 (int)ud->size, ud->data, ud->width); 2340 2341 utf8_copy(&ictx->cell.cell.data, ud); 2342 screen_write_collect_add(sctx, &ictx->cell.cell); 2343 2344 return (0); 2345} 2346 2347/* Parse colour from OSC. */ 2348static int 2349input_osc_parse_colour(const char *p, u_int *r, u_int *g, u_int *b) 2350{ 2351 u_int rsize, gsize, bsize; 2352 const char *cp, *s = p; 2353 2354 if (sscanf(p, "rgb:%x/%x/%x", r, g, b) != 3) 2355 return (0); 2356 p += 4; 2357 2358 cp = strchr(p, '/'); 2359 rsize = cp - p; 2360 if (rsize == 1) 2361 (*r) = (*r) | ((*r) << 4); 2362 else if (rsize == 3) 2363 (*r) >>= 4; 2364 else if (rsize == 4) 2365 (*r) >>= 8; 2366 else if (rsize != 2) 2367 return (0); 2368 2369 p = cp + 1; 2370 cp = strchr(p, '/'); 2371 gsize = cp - p; 2372 if (gsize == 1) 2373 (*g) = (*g) | ((*g) << 4); 2374 else if (gsize == 3) 2375 (*g) >>= 4; 2376 else if (gsize == 4) 2377 (*g) >>= 8; 2378 else if (gsize != 2) 2379 return (0); 2380 2381 bsize = strlen(cp + 1); 2382 if (bsize == 1) 2383 (*b) = (*b) | ((*b) << 4); 2384 else if (bsize == 3) 2385 (*b) >>= 4; 2386 else if (bsize == 4) 2387 (*b) >>= 8; 2388 else if (bsize != 2) 2389 return (0); 2390 2391 log_debug("%s: %s = %02x%02x%02x", __func__, s, *r, *g, *b); 2392 return (1); 2393} 2394 2395/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2396static void 2397input_osc_4(struct input_ctx *ictx, const char *p) 2398{ 2399 struct window_pane *wp = ictx->wp; 2400 char *copy, *s, *next = NULL; 2401 long idx; 2402 u_int r, g, b; 2403 2404 copy = s = xstrdup(p); 2405 while (s != NULL && *s != '\0') { 2406 idx = strtol(s, &next, 10); 2407 if (*next++ != ';') 2408 goto bad; 2409 if (idx < 0 || idx >= 0x100) 2410 goto bad; 2411 2412 s = strsep(&next, ";"); 2413 if (!input_osc_parse_colour(s, &r, &g, &b)) { 2414 s = next; 2415 continue; 2416 } 2417 2418 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2419 s = next; 2420 } 2421 2422 free(copy); 2423 return; 2424 2425bad: 2426 log_debug("bad OSC 4: %s", p); 2427 free(copy); 2428} 2429 2430/* Handle the OSC 10 sequence for setting foreground colour. */ 2431static void 2432input_osc_10(struct input_ctx *ictx, const char *p) 2433{ 2434 struct window_pane *wp = ictx->wp; 2435 u_int r, g, b; 2436 char tmp[16]; 2437 2438 if (strcmp(p, "?") == 0) 2439 return; 2440 2441 if (!input_osc_parse_colour(p, &r, &g, &b)) 2442 goto bad; 2443 xsnprintf(tmp, sizeof tmp, "fg=#%02x%02x%02x", r, g, b); 2444 options_set_style(wp->options, "window-style", 1, tmp); 2445 options_set_style(wp->options, "window-active-style", 1, tmp); 2446 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2447 2448 return; 2449 2450bad: 2451 log_debug("bad OSC 10: %s", p); 2452} 2453 2454/* Handle the OSC 11 sequence for setting background colour. */ 2455static void 2456input_osc_11(struct input_ctx *ictx, const char *p) 2457{ 2458 struct window_pane *wp = ictx->wp; 2459 u_int r, g, b; 2460 char tmp[16]; 2461 2462 if (strcmp(p, "?") == 0) 2463 return; 2464 2465 if (!input_osc_parse_colour(p, &r, &g, &b)) 2466 goto bad; 2467 xsnprintf(tmp, sizeof tmp, "bg=#%02x%02x%02x", r, g, b); 2468 options_set_style(wp->options, "window-style", 1, tmp); 2469 options_set_style(wp->options, "window-active-style", 1, tmp); 2470 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2471 2472 return; 2473 2474bad: 2475 log_debug("bad OSC 11: %s", p); 2476} 2477 2478/* Handle the OSC 52 sequence for setting the clipboard. */ 2479static void 2480input_osc_52(struct input_ctx *ictx, const char *p) 2481{ 2482 struct window_pane *wp = ictx->wp; 2483 char *end; 2484 const char *buf; 2485 size_t len; 2486 u_char *out; 2487 int outlen, state; 2488 struct screen_write_ctx ctx; 2489 struct paste_buffer *pb; 2490 2491 state = options_get_number(global_options, "set-clipboard"); 2492 if (state != 2) 2493 return; 2494 2495 if ((end = strchr(p, ';')) == NULL) 2496 return; 2497 end++; 2498 if (*end == '\0') 2499 return; 2500 log_debug("%s: %s", __func__, end); 2501 2502 if (strcmp(end, "?") == 0) { 2503 if ((pb = paste_get_top(NULL)) != NULL) { 2504 buf = paste_buffer_data(pb, &len); 2505 outlen = 4 * ((len + 2) / 3) + 1; 2506 out = xmalloc(outlen); 2507 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2508 free(out); 2509 return; 2510 } 2511 } else { 2512 outlen = 0; 2513 out = NULL; 2514 } 2515 bufferevent_write(wp->event, "\033]52;;", 6); 2516 if (outlen != 0) 2517 bufferevent_write(wp->event, out, outlen); 2518 if (ictx->input_end == INPUT_END_BEL) 2519 bufferevent_write(wp->event, "\007", 1); 2520 else 2521 bufferevent_write(wp->event, "\033\\", 2); 2522 free(out); 2523 return; 2524 } 2525 2526 len = (strlen(end) / 4) * 3; 2527 if (len == 0) 2528 return; 2529 2530 out = xmalloc(len); 2531 if ((outlen = b64_pton(end, out, len)) == -1) { 2532 free(out); 2533 return; 2534 } 2535 2536 screen_write_start(&ctx, wp, NULL); 2537 screen_write_setselection(&ctx, out, outlen); 2538 screen_write_stop(&ctx); 2539 notify_pane("pane-set-clipboard", wp); 2540 2541 paste_add(NULL, out, outlen); 2542} 2543 2544/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2545static void 2546input_osc_104(struct input_ctx *ictx, const char *p) 2547{ 2548 struct window_pane *wp = ictx->wp; 2549 char *copy, *s; 2550 long idx; 2551 2552 if (*p == '\0') { 2553 window_pane_reset_palette(wp); 2554 return; 2555 } 2556 2557 copy = s = xstrdup(p); 2558 while (*s != '\0') { 2559 idx = strtol(s, &s, 10); 2560 if (*s != '\0' && *s != ';') 2561 goto bad; 2562 if (idx < 0 || idx >= 0x100) 2563 goto bad; 2564 2565 window_pane_unset_palette(wp, idx); 2566 if (*s == ';') 2567 s++; 2568 } 2569 free(copy); 2570 return; 2571 2572bad: 2573 log_debug("bad OSC 104: %s", p); 2574 free(copy); 2575} 2576