input.c revision 1.112
1/* $OpenBSD: input.c,v 1.112 2017/02/06 22:05:11 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 * http://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 context. */ 62struct input_ctx { 63 struct window_pane *wp; 64 struct screen_write_ctx ctx; 65 66 struct input_cell cell; 67 68 struct input_cell old_cell; 69 u_int old_cx; 70 u_int old_cy; 71 72 u_char interm_buf[4]; 73 size_t interm_len; 74 75 u_char param_buf[64]; 76 size_t param_len; 77 78#define INPUT_BUF_START 32 79#define INPUT_BUF_LIMIT 1048576 80 u_char *input_buf; 81 size_t input_len; 82 size_t input_space; 83 84 int param_list[24]; /* -1 not present */ 85 u_int param_list_len; 86 87 struct utf8_data utf8data; 88 89 int ch; 90 91 int flags; 92#define INPUT_DISCARD 0x1 93 94 const struct input_state *state; 95 96 /* 97 * All input received since we were last in the ground state. Sent to 98 * control clients on connection. 99 */ 100 struct evbuffer *since_ground; 101}; 102 103/* Helper functions. */ 104struct input_transition; 105static int input_split(struct input_ctx *); 106static int input_get(struct input_ctx *, u_int, int, int); 107static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 108static void input_set_state(struct window_pane *, 109 const struct input_transition *); 110static void input_reset_cell(struct input_ctx *); 111 112static void input_osc_4(struct window_pane *, const char *); 113static void input_osc_52(struct window_pane *, const char *); 114static void input_osc_104(struct window_pane *, const char *); 115 116/* Transition entry/exit handlers. */ 117static void input_clear(struct input_ctx *); 118static void input_ground(struct input_ctx *); 119static void input_enter_osc(struct input_ctx *); 120static void input_exit_osc(struct input_ctx *); 121static void input_enter_apc(struct input_ctx *); 122static void input_exit_apc(struct input_ctx *); 123static void input_enter_rename(struct input_ctx *); 124static void input_exit_rename(struct input_ctx *); 125 126/* Input state handlers. */ 127static int input_print(struct input_ctx *); 128static int input_intermediate(struct input_ctx *); 129static int input_parameter(struct input_ctx *); 130static int input_input(struct input_ctx *); 131static int input_c0_dispatch(struct input_ctx *); 132static int input_esc_dispatch(struct input_ctx *); 133static int input_csi_dispatch(struct input_ctx *); 134static void input_csi_dispatch_rm(struct input_ctx *); 135static void input_csi_dispatch_rm_private(struct input_ctx *); 136static void input_csi_dispatch_sm(struct input_ctx *); 137static void input_csi_dispatch_sm_private(struct input_ctx *); 138static void input_csi_dispatch_winops(struct input_ctx *); 139static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 140static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 141static void input_csi_dispatch_sgr(struct input_ctx *); 142static int input_dcs_dispatch(struct input_ctx *); 143static int input_utf8_open(struct input_ctx *); 144static int input_utf8_add(struct input_ctx *); 145static int input_utf8_close(struct input_ctx *); 146 147/* Command table comparison function. */ 148static int input_table_compare(const void *, const void *); 149 150/* Command table entry. */ 151struct input_table_entry { 152 int ch; 153 const char *interm; 154 int type; 155}; 156 157/* Escape commands. */ 158enum input_esc_type { 159 INPUT_ESC_DECALN, 160 INPUT_ESC_DECKPAM, 161 INPUT_ESC_DECKPNM, 162 INPUT_ESC_DECRC, 163 INPUT_ESC_DECSC, 164 INPUT_ESC_HTS, 165 INPUT_ESC_IND, 166 INPUT_ESC_NEL, 167 INPUT_ESC_RI, 168 INPUT_ESC_RIS, 169 INPUT_ESC_SCSG0_OFF, 170 INPUT_ESC_SCSG0_ON, 171 INPUT_ESC_SCSG1_OFF, 172 INPUT_ESC_SCSG1_ON, 173 INPUT_ESC_ST, 174}; 175 176/* Escape command table. */ 177static const struct input_table_entry input_esc_table[] = { 178 { '0', "(", INPUT_ESC_SCSG0_ON }, 179 { '0', ")", INPUT_ESC_SCSG1_ON }, 180 { '7', "", INPUT_ESC_DECSC }, 181 { '8', "", INPUT_ESC_DECRC }, 182 { '8', "#", INPUT_ESC_DECALN }, 183 { '=', "", INPUT_ESC_DECKPAM }, 184 { '>', "", INPUT_ESC_DECKPNM }, 185 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 186 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 187 { 'D', "", INPUT_ESC_IND }, 188 { 'E', "", INPUT_ESC_NEL }, 189 { 'H', "", INPUT_ESC_HTS }, 190 { 'M', "", INPUT_ESC_RI }, 191 { '\\', "", INPUT_ESC_ST }, 192 { 'c', "", INPUT_ESC_RIS }, 193}; 194 195/* Control (CSI) commands. */ 196enum input_csi_type { 197 INPUT_CSI_CBT, 198 INPUT_CSI_CNL, 199 INPUT_CSI_CPL, 200 INPUT_CSI_CUB, 201 INPUT_CSI_CUD, 202 INPUT_CSI_CUF, 203 INPUT_CSI_CUP, 204 INPUT_CSI_CUU, 205 INPUT_CSI_DA, 206 INPUT_CSI_DA_TWO, 207 INPUT_CSI_DCH, 208 INPUT_CSI_DECSCUSR, 209 INPUT_CSI_DECSTBM, 210 INPUT_CSI_DL, 211 INPUT_CSI_DSR, 212 INPUT_CSI_ECH, 213 INPUT_CSI_ED, 214 INPUT_CSI_EL, 215 INPUT_CSI_HPA, 216 INPUT_CSI_ICH, 217 INPUT_CSI_IL, 218 INPUT_CSI_RCP, 219 INPUT_CSI_RM, 220 INPUT_CSI_RM_PRIVATE, 221 INPUT_CSI_SCP, 222 INPUT_CSI_SGR, 223 INPUT_CSI_SM, 224 INPUT_CSI_SM_PRIVATE, 225 INPUT_CSI_TBC, 226 INPUT_CSI_VPA, 227 INPUT_CSI_WINOPS, 228}; 229 230/* Control (CSI) command table. */ 231static const struct input_table_entry input_csi_table[] = { 232 { '@', "", INPUT_CSI_ICH }, 233 { 'A', "", INPUT_CSI_CUU }, 234 { 'B', "", INPUT_CSI_CUD }, 235 { 'C', "", INPUT_CSI_CUF }, 236 { 'D', "", INPUT_CSI_CUB }, 237 { 'E', "", INPUT_CSI_CNL }, 238 { 'F', "", INPUT_CSI_CPL }, 239 { 'G', "", INPUT_CSI_HPA }, 240 { 'H', "", INPUT_CSI_CUP }, 241 { 'J', "", INPUT_CSI_ED }, 242 { 'K', "", INPUT_CSI_EL }, 243 { 'L', "", INPUT_CSI_IL }, 244 { 'M', "", INPUT_CSI_DL }, 245 { 'P', "", INPUT_CSI_DCH }, 246 { 'X', "", INPUT_CSI_ECH }, 247 { 'Z', "", INPUT_CSI_CBT }, 248 { 'c', "", INPUT_CSI_DA }, 249 { 'c', ">", INPUT_CSI_DA_TWO }, 250 { 'd', "", INPUT_CSI_VPA }, 251 { 'f', "", INPUT_CSI_CUP }, 252 { 'g', "", INPUT_CSI_TBC }, 253 { 'h', "", INPUT_CSI_SM }, 254 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 255 { 'l', "", INPUT_CSI_RM }, 256 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 257 { 'm', "", INPUT_CSI_SGR }, 258 { 'n', "", INPUT_CSI_DSR }, 259 { 'q', " ", INPUT_CSI_DECSCUSR }, 260 { 'r', "", INPUT_CSI_DECSTBM }, 261 { 's', "", INPUT_CSI_SCP }, 262 { 't', "", INPUT_CSI_WINOPS }, 263 { 'u', "", INPUT_CSI_RCP }, 264}; 265 266/* Input transition. */ 267struct input_transition { 268 int first; 269 int last; 270 271 int (*handler)(struct input_ctx *); 272 const struct input_state *state; 273}; 274 275/* Input state. */ 276struct input_state { 277 const char *name; 278 void (*enter)(struct input_ctx *); 279 void (*exit)(struct input_ctx *); 280 const struct input_transition *transitions; 281}; 282 283/* State transitions available from all states. */ 284#define INPUT_STATE_ANYWHERE \ 285 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 286 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 287 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 288 289/* Forward declarations of state tables. */ 290static const struct input_transition input_state_ground_table[]; 291static const struct input_transition input_state_esc_enter_table[]; 292static const struct input_transition input_state_esc_intermediate_table[]; 293static const struct input_transition input_state_csi_enter_table[]; 294static const struct input_transition input_state_csi_parameter_table[]; 295static const struct input_transition input_state_csi_intermediate_table[]; 296static const struct input_transition input_state_csi_ignore_table[]; 297static const struct input_transition input_state_dcs_enter_table[]; 298static const struct input_transition input_state_dcs_parameter_table[]; 299static const struct input_transition input_state_dcs_intermediate_table[]; 300static const struct input_transition input_state_dcs_handler_table[]; 301static const struct input_transition input_state_dcs_escape_table[]; 302static const struct input_transition input_state_dcs_ignore_table[]; 303static const struct input_transition input_state_osc_string_table[]; 304static const struct input_transition input_state_apc_string_table[]; 305static const struct input_transition input_state_rename_string_table[]; 306static const struct input_transition input_state_consume_st_table[]; 307static const struct input_transition input_state_utf8_three_table[]; 308static const struct input_transition input_state_utf8_two_table[]; 309static const struct input_transition input_state_utf8_one_table[]; 310 311/* ground state definition. */ 312static const struct input_state input_state_ground = { 313 "ground", 314 input_ground, NULL, 315 input_state_ground_table 316}; 317 318/* esc_enter state definition. */ 319static const struct input_state input_state_esc_enter = { 320 "esc_enter", 321 input_clear, NULL, 322 input_state_esc_enter_table 323}; 324 325/* esc_intermediate state definition. */ 326static const struct input_state input_state_esc_intermediate = { 327 "esc_intermediate", 328 NULL, NULL, 329 input_state_esc_intermediate_table 330}; 331 332/* csi_enter state definition. */ 333static const struct input_state input_state_csi_enter = { 334 "csi_enter", 335 input_clear, NULL, 336 input_state_csi_enter_table 337}; 338 339/* csi_parameter state definition. */ 340static const struct input_state input_state_csi_parameter = { 341 "csi_parameter", 342 NULL, NULL, 343 input_state_csi_parameter_table 344}; 345 346/* csi_intermediate state definition. */ 347static const struct input_state input_state_csi_intermediate = { 348 "csi_intermediate", 349 NULL, NULL, 350 input_state_csi_intermediate_table 351}; 352 353/* csi_ignore state definition. */ 354static const struct input_state input_state_csi_ignore = { 355 "csi_ignore", 356 NULL, NULL, 357 input_state_csi_ignore_table 358}; 359 360/* dcs_enter state definition. */ 361static const struct input_state input_state_dcs_enter = { 362 "dcs_enter", 363 input_clear, NULL, 364 input_state_dcs_enter_table 365}; 366 367/* dcs_parameter state definition. */ 368static const struct input_state input_state_dcs_parameter = { 369 "dcs_parameter", 370 NULL, NULL, 371 input_state_dcs_parameter_table 372}; 373 374/* dcs_intermediate state definition. */ 375static const struct input_state input_state_dcs_intermediate = { 376 "dcs_intermediate", 377 NULL, NULL, 378 input_state_dcs_intermediate_table 379}; 380 381/* dcs_handler state definition. */ 382static const struct input_state input_state_dcs_handler = { 383 "dcs_handler", 384 NULL, NULL, 385 input_state_dcs_handler_table 386}; 387 388/* dcs_escape state definition. */ 389static const struct input_state input_state_dcs_escape = { 390 "dcs_escape", 391 NULL, NULL, 392 input_state_dcs_escape_table 393}; 394 395/* dcs_ignore state definition. */ 396static const struct input_state input_state_dcs_ignore = { 397 "dcs_ignore", 398 NULL, NULL, 399 input_state_dcs_ignore_table 400}; 401 402/* osc_string state definition. */ 403static const struct input_state input_state_osc_string = { 404 "osc_string", 405 input_enter_osc, input_exit_osc, 406 input_state_osc_string_table 407}; 408 409/* apc_string state definition. */ 410static const struct input_state input_state_apc_string = { 411 "apc_string", 412 input_enter_apc, input_exit_apc, 413 input_state_apc_string_table 414}; 415 416/* rename_string state definition. */ 417static const struct input_state input_state_rename_string = { 418 "rename_string", 419 input_enter_rename, input_exit_rename, 420 input_state_rename_string_table 421}; 422 423/* consume_st state definition. */ 424static const struct input_state input_state_consume_st = { 425 "consume_st", 426 NULL, NULL, 427 input_state_consume_st_table 428}; 429 430/* utf8_three state definition. */ 431static const struct input_state input_state_utf8_three = { 432 "utf8_three", 433 NULL, NULL, 434 input_state_utf8_three_table 435}; 436 437/* utf8_two state definition. */ 438static const struct input_state input_state_utf8_two = { 439 "utf8_two", 440 NULL, NULL, 441 input_state_utf8_two_table 442}; 443 444/* utf8_one state definition. */ 445static const struct input_state input_state_utf8_one = { 446 "utf8_one", 447 NULL, NULL, 448 input_state_utf8_one_table 449}; 450 451/* ground state table. */ 452static const struct input_transition input_state_ground_table[] = { 453 INPUT_STATE_ANYWHERE, 454 455 { 0x00, 0x17, input_c0_dispatch, NULL }, 456 { 0x19, 0x19, input_c0_dispatch, NULL }, 457 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 458 { 0x20, 0x7e, input_print, NULL }, 459 { 0x7f, 0x7f, NULL, NULL }, 460 { 0x80, 0xc1, NULL, NULL }, 461 { 0xc2, 0xdf, input_utf8_open, &input_state_utf8_one }, 462 { 0xe0, 0xef, input_utf8_open, &input_state_utf8_two }, 463 { 0xf0, 0xf4, input_utf8_open, &input_state_utf8_three }, 464 { 0xf5, 0xff, NULL, NULL }, 465 466 { -1, -1, NULL, NULL } 467}; 468 469/* esc_enter state table. */ 470static const struct input_transition input_state_esc_enter_table[] = { 471 INPUT_STATE_ANYWHERE, 472 473 { 0x00, 0x17, input_c0_dispatch, NULL }, 474 { 0x19, 0x19, input_c0_dispatch, NULL }, 475 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 476 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 477 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 478 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 479 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 480 { 0x58, 0x58, NULL, &input_state_consume_st }, 481 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 482 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 483 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 484 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 485 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 486 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 487 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 488 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 489 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 490 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 491 { 0x7f, 0xff, NULL, NULL }, 492 493 { -1, -1, NULL, NULL } 494}; 495 496/* esc_interm state table. */ 497static const struct input_transition input_state_esc_intermediate_table[] = { 498 INPUT_STATE_ANYWHERE, 499 500 { 0x00, 0x17, input_c0_dispatch, NULL }, 501 { 0x19, 0x19, input_c0_dispatch, NULL }, 502 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 503 { 0x20, 0x2f, input_intermediate, NULL }, 504 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 505 { 0x7f, 0xff, NULL, NULL }, 506 507 { -1, -1, NULL, NULL } 508}; 509 510/* csi_enter state table. */ 511static const struct input_transition input_state_csi_enter_table[] = { 512 INPUT_STATE_ANYWHERE, 513 514 { 0x00, 0x17, input_c0_dispatch, NULL }, 515 { 0x19, 0x19, input_c0_dispatch, NULL }, 516 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 517 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 518 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 519 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 520 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 521 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 522 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 523 { 0x7f, 0xff, NULL, NULL }, 524 525 { -1, -1, NULL, NULL } 526}; 527 528/* csi_parameter state table. */ 529static const struct input_transition input_state_csi_parameter_table[] = { 530 INPUT_STATE_ANYWHERE, 531 532 { 0x00, 0x17, input_c0_dispatch, NULL }, 533 { 0x19, 0x19, input_c0_dispatch, NULL }, 534 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 535 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 536 { 0x30, 0x39, input_parameter, NULL }, 537 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 538 { 0x3b, 0x3b, input_parameter, NULL }, 539 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 540 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 541 { 0x7f, 0xff, NULL, NULL }, 542 543 { -1, -1, NULL, NULL } 544}; 545 546/* csi_intermediate state table. */ 547static const struct input_transition input_state_csi_intermediate_table[] = { 548 INPUT_STATE_ANYWHERE, 549 550 { 0x00, 0x17, input_c0_dispatch, NULL }, 551 { 0x19, 0x19, input_c0_dispatch, NULL }, 552 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 553 { 0x20, 0x2f, input_intermediate, NULL }, 554 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 555 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 556 { 0x7f, 0xff, NULL, NULL }, 557 558 { -1, -1, NULL, NULL } 559}; 560 561/* csi_ignore state table. */ 562static const struct input_transition input_state_csi_ignore_table[] = { 563 INPUT_STATE_ANYWHERE, 564 565 { 0x00, 0x17, input_c0_dispatch, NULL }, 566 { 0x19, 0x19, input_c0_dispatch, NULL }, 567 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 568 { 0x20, 0x3f, NULL, NULL }, 569 { 0x40, 0x7e, NULL, &input_state_ground }, 570 { 0x7f, 0xff, NULL, NULL }, 571 572 { -1, -1, NULL, NULL } 573}; 574 575/* dcs_enter state table. */ 576static const struct input_transition input_state_dcs_enter_table[] = { 577 INPUT_STATE_ANYWHERE, 578 579 { 0x00, 0x17, NULL, NULL }, 580 { 0x19, 0x19, NULL, NULL }, 581 { 0x1c, 0x1f, NULL, NULL }, 582 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 583 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 584 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 585 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 586 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 587 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 588 { 0x7f, 0xff, NULL, NULL }, 589 590 { -1, -1, NULL, NULL } 591}; 592 593/* dcs_parameter state table. */ 594static const struct input_transition input_state_dcs_parameter_table[] = { 595 INPUT_STATE_ANYWHERE, 596 597 { 0x00, 0x17, NULL, NULL }, 598 { 0x19, 0x19, NULL, NULL }, 599 { 0x1c, 0x1f, NULL, NULL }, 600 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 601 { 0x30, 0x39, input_parameter, NULL }, 602 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 603 { 0x3b, 0x3b, input_parameter, NULL }, 604 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 605 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 606 { 0x7f, 0xff, NULL, NULL }, 607 608 { -1, -1, NULL, NULL } 609}; 610 611/* dcs_interm state table. */ 612static const struct input_transition input_state_dcs_intermediate_table[] = { 613 INPUT_STATE_ANYWHERE, 614 615 { 0x00, 0x17, NULL, NULL }, 616 { 0x19, 0x19, NULL, NULL }, 617 { 0x1c, 0x1f, NULL, NULL }, 618 { 0x20, 0x2f, input_intermediate, NULL }, 619 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 620 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 621 { 0x7f, 0xff, NULL, NULL }, 622 623 { -1, -1, NULL, NULL } 624}; 625 626/* dcs_handler state table. */ 627static const struct input_transition input_state_dcs_handler_table[] = { 628 /* No INPUT_STATE_ANYWHERE */ 629 630 { 0x00, 0x1a, input_input, NULL }, 631 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 632 { 0x1c, 0xff, input_input, NULL }, 633 634 { -1, -1, NULL, NULL } 635}; 636 637/* dcs_escape state table. */ 638static const struct input_transition input_state_dcs_escape_table[] = { 639 /* No INPUT_STATE_ANYWHERE */ 640 641 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 642 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 643 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 644 645 { -1, -1, NULL, NULL } 646}; 647 648/* dcs_ignore state table. */ 649static const struct input_transition input_state_dcs_ignore_table[] = { 650 INPUT_STATE_ANYWHERE, 651 652 { 0x00, 0x17, NULL, NULL }, 653 { 0x19, 0x19, NULL, NULL }, 654 { 0x1c, 0x1f, NULL, NULL }, 655 { 0x20, 0xff, NULL, NULL }, 656 657 { -1, -1, NULL, NULL } 658}; 659 660/* osc_string state table. */ 661static const struct input_transition input_state_osc_string_table[] = { 662 INPUT_STATE_ANYWHERE, 663 664 { 0x00, 0x06, NULL, NULL }, 665 { 0x07, 0x07, NULL, &input_state_ground }, 666 { 0x08, 0x17, NULL, NULL }, 667 { 0x19, 0x19, NULL, NULL }, 668 { 0x1c, 0x1f, NULL, NULL }, 669 { 0x20, 0xff, input_input, NULL }, 670 671 { -1, -1, NULL, NULL } 672}; 673 674/* apc_string state table. */ 675static const struct input_transition input_state_apc_string_table[] = { 676 INPUT_STATE_ANYWHERE, 677 678 { 0x00, 0x17, NULL, NULL }, 679 { 0x19, 0x19, NULL, NULL }, 680 { 0x1c, 0x1f, NULL, NULL }, 681 { 0x20, 0xff, input_input, NULL }, 682 683 { -1, -1, NULL, NULL } 684}; 685 686/* rename_string state table. */ 687static const struct input_transition input_state_rename_string_table[] = { 688 INPUT_STATE_ANYWHERE, 689 690 { 0x00, 0x17, NULL, NULL }, 691 { 0x19, 0x19, NULL, NULL }, 692 { 0x1c, 0x1f, NULL, NULL }, 693 { 0x20, 0xff, input_input, NULL }, 694 695 { -1, -1, NULL, NULL } 696}; 697 698/* consume_st state table. */ 699static const struct input_transition input_state_consume_st_table[] = { 700 INPUT_STATE_ANYWHERE, 701 702 { 0x00, 0x17, NULL, NULL }, 703 { 0x19, 0x19, NULL, NULL }, 704 { 0x1c, 0x1f, NULL, NULL }, 705 { 0x20, 0xff, NULL, NULL }, 706 707 { -1, -1, NULL, NULL } 708}; 709 710/* utf8_three state table. */ 711static const struct input_transition input_state_utf8_three_table[] = { 712 /* No INPUT_STATE_ANYWHERE */ 713 714 { 0x00, 0x7f, NULL, &input_state_ground }, 715 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_two }, 716 { 0xc0, 0xff, NULL, &input_state_ground }, 717 718 { -1, -1, NULL, NULL } 719}; 720 721/* utf8_two state table. */ 722static const struct input_transition input_state_utf8_two_table[] = { 723 /* No INPUT_STATE_ANYWHERE */ 724 725 { 0x00, 0x7f, NULL, &input_state_ground }, 726 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_one }, 727 { 0xc0, 0xff, NULL, &input_state_ground }, 728 729 { -1, -1, NULL, NULL } 730}; 731 732/* utf8_one state table. */ 733static const struct input_transition input_state_utf8_one_table[] = { 734 /* No INPUT_STATE_ANYWHERE */ 735 736 { 0x00, 0x7f, NULL, &input_state_ground }, 737 { 0x80, 0xbf, input_utf8_close, &input_state_ground }, 738 { 0xc0, 0xff, NULL, &input_state_ground }, 739 740 { -1, -1, NULL, NULL } 741}; 742 743/* Input table compare. */ 744static int 745input_table_compare(const void *key, const void *value) 746{ 747 const struct input_ctx *ictx = key; 748 const struct input_table_entry *entry = value; 749 750 if (ictx->ch != entry->ch) 751 return (ictx->ch - entry->ch); 752 return (strcmp(ictx->interm_buf, entry->interm)); 753} 754 755/* Reset cell state to default. */ 756static void 757input_reset_cell(struct input_ctx *ictx) 758{ 759 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 760 ictx->cell.set = 0; 761 ictx->cell.g0set = ictx->cell.g1set = 0; 762 763 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 764 ictx->old_cx = 0; 765 ictx->old_cy = 0; 766} 767 768/* Initialise input parser. */ 769void 770input_init(struct window_pane *wp) 771{ 772 struct input_ctx *ictx; 773 774 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 775 776 ictx->input_space = INPUT_BUF_START; 777 ictx->input_buf = xmalloc(INPUT_BUF_START); 778 779 ictx->since_ground = evbuffer_new(); 780 781 input_reset(wp, 0); 782} 783 784/* Destroy input parser. */ 785void 786input_free(struct window_pane *wp) 787{ 788 struct input_ctx *ictx = wp->ictx; 789 790 free(ictx->input_buf); 791 evbuffer_free(ictx->since_ground); 792 793 free(ictx); 794 wp->ictx = NULL; 795} 796 797/* Reset input state and clear screen. */ 798void 799input_reset(struct window_pane *wp, int clear) 800{ 801 struct input_ctx *ictx = wp->ictx; 802 803 input_reset_cell(ictx); 804 805 if (clear) { 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 *ictx->interm_buf = '\0'; 815 ictx->interm_len = 0; 816 817 *ictx->param_buf = '\0'; 818 ictx->param_len = 0; 819 820 *ictx->input_buf = '\0'; 821 ictx->input_len = 0; 822 823 ictx->state = &input_state_ground; 824 ictx->flags = 0; 825} 826 827/* Return pending data. */ 828struct evbuffer * 829input_pending(struct window_pane *wp) 830{ 831 return (wp->ictx->since_ground); 832} 833 834/* Change input state. */ 835static void 836input_set_state(struct window_pane *wp, const struct input_transition *itr) 837{ 838 struct input_ctx *ictx = wp->ictx; 839 840 if (ictx->state->exit != NULL) 841 ictx->state->exit(ictx); 842 ictx->state = itr->state; 843 if (ictx->state->enter != NULL) 844 ictx->state->enter(ictx); 845} 846 847/* Parse input. */ 848void 849input_parse(struct window_pane *wp) 850{ 851 struct input_ctx *ictx = wp->ictx; 852 const struct input_transition *itr; 853 struct evbuffer *evb = wp->event->input; 854 u_char *buf; 855 size_t len, off; 856 857 if (EVBUFFER_LENGTH(evb) == 0) 858 return; 859 860 window_update_activity(wp->window); 861 wp->flags |= PANE_CHANGED; 862 863 /* 864 * Open the screen. Use NULL wp if there is a mode set as don't want to 865 * update the tty. 866 */ 867 if (wp->mode == NULL) 868 screen_write_start(&ictx->ctx, wp, &wp->base); 869 else 870 screen_write_start(&ictx->ctx, NULL, &wp->base); 871 ictx->wp = wp; 872 873 buf = EVBUFFER_DATA(evb); 874 len = EVBUFFER_LENGTH(evb); 875 off = 0; 876 877 notify_input(wp, evb); 878 879 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 880 ictx->state->name, len, (int)len, buf); 881 882 /* Parse the input. */ 883 while (off < len) { 884 ictx->ch = buf[off++]; 885 886 /* Find the transition. */ 887 itr = ictx->state->transitions; 888 while (itr->first != -1 && itr->last != -1) { 889 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 890 break; 891 itr++; 892 } 893 if (itr->first == -1 || itr->last == -1) { 894 /* No transition? Eh? */ 895 fatalx("no transition from state"); 896 } 897 898 /* 899 * Execute the handler, if any. Don't switch state if it 900 * returns non-zero. 901 */ 902 if (itr->handler != NULL && itr->handler(ictx) != 0) 903 continue; 904 905 /* And switch state, if necessary. */ 906 if (itr->state != NULL) 907 input_set_state(wp, itr); 908 909 /* If not in ground state, save input. */ 910 if (ictx->state != &input_state_ground) 911 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 912 } 913 914 /* Close the screen. */ 915 screen_write_stop(&ictx->ctx); 916 917 evbuffer_drain(evb, len); 918} 919 920/* Split the parameter list (if any). */ 921static int 922input_split(struct input_ctx *ictx) 923 924{ 925 const char *errstr; 926 char *ptr, *out; 927 int n; 928 929 ictx->param_list_len = 0; 930 if (ictx->param_len == 0) 931 return (0); 932 933 ptr = ictx->param_buf; 934 while ((out = strsep(&ptr, ";")) != NULL) { 935 if (*out == '\0') 936 n = -1; 937 else { 938 n = strtonum(out, 0, INT_MAX, &errstr); 939 if (errstr != NULL) 940 return (-1); 941 } 942 943 ictx->param_list[ictx->param_list_len++] = n; 944 if (ictx->param_list_len == nitems(ictx->param_list)) 945 return (-1); 946 } 947 948 return (0); 949} 950 951/* Get an argument or return default value. */ 952static int 953input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 954{ 955 int retval; 956 957 if (validx >= ictx->param_list_len) 958 return (defval); 959 960 retval = ictx->param_list[validx]; 961 if (retval == -1) 962 return (defval); 963 if (retval < minval) 964 return (minval); 965 return (retval); 966} 967 968/* Reply to terminal query. */ 969static void 970input_reply(struct input_ctx *ictx, const char *fmt, ...) 971{ 972 va_list ap; 973 char *reply; 974 975 va_start(ap, fmt); 976 xvasprintf(&reply, fmt, ap); 977 va_end(ap); 978 979 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 980 free(reply); 981} 982 983/* Clear saved state. */ 984static void 985input_clear(struct input_ctx *ictx) 986{ 987 *ictx->interm_buf = '\0'; 988 ictx->interm_len = 0; 989 990 *ictx->param_buf = '\0'; 991 ictx->param_len = 0; 992 993 *ictx->input_buf = '\0'; 994 ictx->input_len = 0; 995 996 ictx->flags &= ~INPUT_DISCARD; 997} 998 999/* Reset for ground state. */ 1000static void 1001input_ground(struct input_ctx *ictx) 1002{ 1003 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1004 1005 if (ictx->input_space > INPUT_BUF_START) { 1006 ictx->input_space = INPUT_BUF_START; 1007 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1008 } 1009} 1010 1011/* Output this character to the screen. */ 1012static int 1013input_print(struct input_ctx *ictx) 1014{ 1015 int set; 1016 1017 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1018 if (set == 1) 1019 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1020 else 1021 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1022 1023 utf8_set(&ictx->cell.cell.data, ictx->ch); 1024 screen_write_cell(&ictx->ctx, &ictx->cell.cell); 1025 1026 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1027 1028 return (0); 1029} 1030 1031/* Collect intermediate string. */ 1032static int 1033input_intermediate(struct input_ctx *ictx) 1034{ 1035 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1036 ictx->flags |= INPUT_DISCARD; 1037 else { 1038 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1039 ictx->interm_buf[ictx->interm_len] = '\0'; 1040 } 1041 1042 return (0); 1043} 1044 1045/* Collect parameter string. */ 1046static int 1047input_parameter(struct input_ctx *ictx) 1048{ 1049 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1050 ictx->flags |= INPUT_DISCARD; 1051 else { 1052 ictx->param_buf[ictx->param_len++] = ictx->ch; 1053 ictx->param_buf[ictx->param_len] = '\0'; 1054 } 1055 1056 return (0); 1057} 1058 1059/* Collect input string. */ 1060static int 1061input_input(struct input_ctx *ictx) 1062{ 1063 size_t available; 1064 1065 available = ictx->input_space; 1066 while (ictx->input_len + 1 >= available) { 1067 available *= 2; 1068 if (available > INPUT_BUF_LIMIT) { 1069 ictx->flags |= INPUT_DISCARD; 1070 return (0); 1071 } 1072 ictx->input_buf = xrealloc(ictx->input_buf, available); 1073 ictx->input_space = available; 1074 } 1075 ictx->input_buf[ictx->input_len++] = ictx->ch; 1076 ictx->input_buf[ictx->input_len] = '\0'; 1077 1078 return (0); 1079} 1080 1081/* Execute C0 control sequence. */ 1082static int 1083input_c0_dispatch(struct input_ctx *ictx) 1084{ 1085 struct screen_write_ctx *sctx = &ictx->ctx; 1086 struct window_pane *wp = ictx->wp; 1087 struct screen *s = sctx->s; 1088 1089 log_debug("%s: '%c'", __func__, ictx->ch); 1090 1091 switch (ictx->ch) { 1092 case '\000': /* NUL */ 1093 break; 1094 case '\007': /* BEL */ 1095 alerts_queue(wp->window, WINDOW_BELL); 1096 break; 1097 case '\010': /* BS */ 1098 screen_write_backspace(sctx); 1099 break; 1100 case '\011': /* HT */ 1101 /* Don't tab beyond the end of the line. */ 1102 if (s->cx >= screen_size_x(s) - 1) 1103 break; 1104 1105 /* Find the next tab point, or use the last column if none. */ 1106 do { 1107 s->cx++; 1108 if (bit_test(s->tabs, s->cx)) 1109 break; 1110 } while (s->cx < screen_size_x(s) - 1); 1111 break; 1112 case '\012': /* LF */ 1113 case '\013': /* VT */ 1114 case '\014': /* FF */ 1115 screen_write_linefeed(sctx, 0); 1116 break; 1117 case '\015': /* CR */ 1118 screen_write_carriagereturn(sctx); 1119 break; 1120 case '\016': /* SO */ 1121 ictx->cell.set = 1; 1122 break; 1123 case '\017': /* SI */ 1124 ictx->cell.set = 0; 1125 break; 1126 default: 1127 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1128 break; 1129 } 1130 1131 return (0); 1132} 1133 1134/* Execute escape sequence. */ 1135static int 1136input_esc_dispatch(struct input_ctx *ictx) 1137{ 1138 struct screen_write_ctx *sctx = &ictx->ctx; 1139 struct screen *s = sctx->s; 1140 struct input_table_entry *entry; 1141 1142 if (ictx->flags & INPUT_DISCARD) 1143 return (0); 1144 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1145 1146 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1147 sizeof input_esc_table[0], input_table_compare); 1148 if (entry == NULL) { 1149 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1150 return (0); 1151 } 1152 1153 switch (entry->type) { 1154 case INPUT_ESC_RIS: 1155 window_pane_reset_palette(ictx->wp); 1156 input_reset_cell(ictx); 1157 screen_write_reset(sctx); 1158 break; 1159 case INPUT_ESC_IND: 1160 screen_write_linefeed(sctx, 0); 1161 break; 1162 case INPUT_ESC_NEL: 1163 screen_write_carriagereturn(sctx); 1164 screen_write_linefeed(sctx, 0); 1165 break; 1166 case INPUT_ESC_HTS: 1167 if (s->cx < screen_size_x(s)) 1168 bit_set(s->tabs, s->cx); 1169 break; 1170 case INPUT_ESC_RI: 1171 screen_write_reverseindex(sctx); 1172 break; 1173 case INPUT_ESC_DECKPAM: 1174 screen_write_mode_set(sctx, MODE_KKEYPAD); 1175 break; 1176 case INPUT_ESC_DECKPNM: 1177 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1178 break; 1179 case INPUT_ESC_DECSC: 1180 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1181 ictx->old_cx = s->cx; 1182 ictx->old_cy = s->cy; 1183 break; 1184 case INPUT_ESC_DECRC: 1185 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1186 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1187 break; 1188 case INPUT_ESC_DECALN: 1189 screen_write_alignmenttest(sctx); 1190 break; 1191 case INPUT_ESC_SCSG0_ON: 1192 ictx->cell.g0set = 1; 1193 break; 1194 case INPUT_ESC_SCSG0_OFF: 1195 ictx->cell.g0set = 0; 1196 break; 1197 case INPUT_ESC_SCSG1_ON: 1198 ictx->cell.g1set = 1; 1199 break; 1200 case INPUT_ESC_SCSG1_OFF: 1201 ictx->cell.g1set = 0; 1202 break; 1203 case INPUT_ESC_ST: 1204 /* ST terminates OSC but the state transition already did it. */ 1205 break; 1206 } 1207 1208 return (0); 1209} 1210 1211/* Execute control sequence. */ 1212static int 1213input_csi_dispatch(struct input_ctx *ictx) 1214{ 1215 struct screen_write_ctx *sctx = &ictx->ctx; 1216 struct screen *s = sctx->s; 1217 struct input_table_entry *entry; 1218 int n, m; 1219 u_int cx; 1220 1221 if (ictx->flags & INPUT_DISCARD) 1222 return (0); 1223 1224 log_debug("%s: '%c' \"%s\" \"%s\"", 1225 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1226 1227 if (input_split(ictx) != 0) 1228 return (0); 1229 1230 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1231 sizeof input_csi_table[0], input_table_compare); 1232 if (entry == NULL) { 1233 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1234 return (0); 1235 } 1236 1237 switch (entry->type) { 1238 case INPUT_CSI_CBT: 1239 /* Find the previous tab point, n times. */ 1240 cx = s->cx; 1241 if (cx > screen_size_x(s) - 1) 1242 cx = screen_size_x(s) - 1; 1243 n = input_get(ictx, 0, 1, 1); 1244 while (cx > 0 && n-- > 0) { 1245 do 1246 cx--; 1247 while (cx > 0 && !bit_test(s->tabs, cx)); 1248 } 1249 s->cx = cx; 1250 break; 1251 case INPUT_CSI_CUB: 1252 screen_write_cursorleft(sctx, input_get(ictx, 0, 1, 1)); 1253 break; 1254 case INPUT_CSI_CUD: 1255 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1256 break; 1257 case INPUT_CSI_CUF: 1258 screen_write_cursorright(sctx, input_get(ictx, 0, 1, 1)); 1259 break; 1260 case INPUT_CSI_CUP: 1261 n = input_get(ictx, 0, 1, 1); 1262 m = input_get(ictx, 1, 1, 1); 1263 screen_write_cursormove(sctx, m - 1, n - 1); 1264 break; 1265 case INPUT_CSI_WINOPS: 1266 input_csi_dispatch_winops(ictx); 1267 break; 1268 case INPUT_CSI_CUU: 1269 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1270 break; 1271 case INPUT_CSI_CNL: 1272 screen_write_carriagereturn(sctx); 1273 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1274 break; 1275 case INPUT_CSI_CPL: 1276 screen_write_carriagereturn(sctx); 1277 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1278 break; 1279 case INPUT_CSI_DA: 1280 switch (input_get(ictx, 0, 0, 0)) { 1281 case 0: 1282 input_reply(ictx, "\033[?1;2c"); 1283 break; 1284 default: 1285 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1286 break; 1287 } 1288 break; 1289 case INPUT_CSI_DA_TWO: 1290 switch (input_get(ictx, 0, 0, 0)) { 1291 case 0: 1292 input_reply(ictx, "\033[>84;0;0c"); 1293 break; 1294 default: 1295 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1296 break; 1297 } 1298 break; 1299 case INPUT_CSI_ECH: 1300 screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1)); 1301 break; 1302 case INPUT_CSI_DCH: 1303 screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1), 1304 ictx->cell.cell.bg); 1305 break; 1306 case INPUT_CSI_DECSTBM: 1307 n = input_get(ictx, 0, 1, 1); 1308 m = input_get(ictx, 1, 1, screen_size_y(s)); 1309 screen_write_scrollregion(sctx, n - 1, m - 1); 1310 break; 1311 case INPUT_CSI_DL: 1312 screen_write_deleteline(sctx, input_get(ictx, 0, 1, 1), 1313 ictx->cell.cell.bg); 1314 break; 1315 case INPUT_CSI_DSR: 1316 switch (input_get(ictx, 0, 0, 0)) { 1317 case 5: 1318 input_reply(ictx, "\033[0n"); 1319 break; 1320 case 6: 1321 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1322 break; 1323 default: 1324 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1325 break; 1326 } 1327 break; 1328 case INPUT_CSI_ED: 1329 switch (input_get(ictx, 0, 0, 0)) { 1330 case 0: 1331 screen_write_clearendofscreen(sctx, ictx->cell.cell.bg); 1332 break; 1333 case 1: 1334 screen_write_clearstartofscreen(sctx, ictx->cell.cell.bg); 1335 break; 1336 case 2: 1337 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1338 break; 1339 case 3: 1340 switch (input_get(ictx, 1, 0, 0)) { 1341 case 0: 1342 /* 1343 * Linux console extension to clear history 1344 * (for example before locking the screen). 1345 */ 1346 screen_write_clearhistory(sctx); 1347 break; 1348 } 1349 break; 1350 default: 1351 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1352 break; 1353 } 1354 break; 1355 case INPUT_CSI_EL: 1356 switch (input_get(ictx, 0, 0, 0)) { 1357 case 0: 1358 screen_write_clearendofline(sctx, ictx->cell.cell.bg); 1359 break; 1360 case 1: 1361 screen_write_clearstartofline(sctx, ictx->cell.cell.bg); 1362 break; 1363 case 2: 1364 screen_write_clearline(sctx, ictx->cell.cell.bg); 1365 break; 1366 default: 1367 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1368 break; 1369 } 1370 break; 1371 case INPUT_CSI_HPA: 1372 n = input_get(ictx, 0, 1, 1); 1373 screen_write_cursormove(sctx, n - 1, s->cy); 1374 break; 1375 case INPUT_CSI_ICH: 1376 screen_write_insertcharacter(sctx, input_get(ictx, 0, 1, 1), 1377 ictx->cell.cell.bg); 1378 break; 1379 case INPUT_CSI_IL: 1380 screen_write_insertline(sctx, input_get(ictx, 0, 1, 1), 1381 ictx->cell.cell.bg); 1382 break; 1383 case INPUT_CSI_RCP: 1384 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1385 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1386 break; 1387 case INPUT_CSI_RM: 1388 input_csi_dispatch_rm(ictx); 1389 break; 1390 case INPUT_CSI_RM_PRIVATE: 1391 input_csi_dispatch_rm_private(ictx); 1392 break; 1393 case INPUT_CSI_SCP: 1394 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1395 ictx->old_cx = s->cx; 1396 ictx->old_cy = s->cy; 1397 break; 1398 case INPUT_CSI_SGR: 1399 input_csi_dispatch_sgr(ictx); 1400 break; 1401 case INPUT_CSI_SM: 1402 input_csi_dispatch_sm(ictx); 1403 break; 1404 case INPUT_CSI_SM_PRIVATE: 1405 input_csi_dispatch_sm_private(ictx); 1406 break; 1407 case INPUT_CSI_TBC: 1408 switch (input_get(ictx, 0, 0, 0)) { 1409 case 0: 1410 if (s->cx < screen_size_x(s)) 1411 bit_clear(s->tabs, s->cx); 1412 break; 1413 case 3: 1414 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1415 break; 1416 default: 1417 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1418 break; 1419 } 1420 break; 1421 case INPUT_CSI_VPA: 1422 n = input_get(ictx, 0, 1, 1); 1423 screen_write_cursormove(sctx, s->cx, n - 1); 1424 break; 1425 case INPUT_CSI_DECSCUSR: 1426 n = input_get(ictx, 0, 0, 0); 1427 screen_set_cursor_style(s, n); 1428 break; 1429 } 1430 1431 return (0); 1432} 1433 1434/* Handle CSI RM. */ 1435static void 1436input_csi_dispatch_rm(struct input_ctx *ictx) 1437{ 1438 u_int i; 1439 1440 for (i = 0; i < ictx->param_list_len; i++) { 1441 switch (input_get(ictx, i, 0, -1)) { 1442 case 4: /* IRM */ 1443 screen_write_mode_clear(&ictx->ctx, MODE_INSERT); 1444 break; 1445 case 34: 1446 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1447 break; 1448 default: 1449 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1450 break; 1451 } 1452 } 1453} 1454 1455/* Handle CSI private RM. */ 1456static void 1457input_csi_dispatch_rm_private(struct input_ctx *ictx) 1458{ 1459 struct window_pane *wp = ictx->wp; 1460 u_int i; 1461 1462 for (i = 0; i < ictx->param_list_len; i++) { 1463 switch (input_get(ictx, i, 0, -1)) { 1464 case 1: /* DECCKM */ 1465 screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR); 1466 break; 1467 case 3: /* DECCOLM */ 1468 screen_write_cursormove(&ictx->ctx, 0, 0); 1469 screen_write_clearscreen(&ictx->ctx, 1470 ictx->cell.cell.bg); 1471 break; 1472 case 7: /* DECAWM */ 1473 screen_write_mode_clear(&ictx->ctx, MODE_WRAP); 1474 break; 1475 case 12: 1476 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1477 break; 1478 case 25: /* TCEM */ 1479 screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); 1480 break; 1481 case 1000: 1482 case 1001: 1483 case 1002: 1484 case 1003: 1485 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1486 break; 1487 case 1004: 1488 screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON); 1489 break; 1490 case 1005: 1491 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8); 1492 break; 1493 case 1006: 1494 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR); 1495 break; 1496 case 47: 1497 case 1047: 1498 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1499 break; 1500 case 1049: 1501 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1502 break; 1503 case 2004: 1504 screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE); 1505 break; 1506 default: 1507 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1508 break; 1509 } 1510 } 1511} 1512 1513/* Handle CSI SM. */ 1514static void 1515input_csi_dispatch_sm(struct input_ctx *ictx) 1516{ 1517 u_int i; 1518 1519 for (i = 0; i < ictx->param_list_len; i++) { 1520 switch (input_get(ictx, i, 0, -1)) { 1521 case 4: /* IRM */ 1522 screen_write_mode_set(&ictx->ctx, MODE_INSERT); 1523 break; 1524 case 34: 1525 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1526 break; 1527 default: 1528 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1529 break; 1530 } 1531 } 1532} 1533 1534/* Handle CSI private SM. */ 1535static void 1536input_csi_dispatch_sm_private(struct input_ctx *ictx) 1537{ 1538 struct window_pane *wp = ictx->wp; 1539 u_int i; 1540 1541 for (i = 0; i < ictx->param_list_len; i++) { 1542 switch (input_get(ictx, i, 0, -1)) { 1543 case 1: /* DECCKM */ 1544 screen_write_mode_set(&ictx->ctx, MODE_KCURSOR); 1545 break; 1546 case 3: /* DECCOLM */ 1547 screen_write_cursormove(&ictx->ctx, 0, 0); 1548 screen_write_clearscreen(&ictx->ctx, 1549 ictx->cell.cell.bg); 1550 break; 1551 case 7: /* DECAWM */ 1552 screen_write_mode_set(&ictx->ctx, MODE_WRAP); 1553 break; 1554 case 12: 1555 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1556 break; 1557 case 25: /* TCEM */ 1558 screen_write_mode_set(&ictx->ctx, MODE_CURSOR); 1559 break; 1560 case 1000: 1561 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1562 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD); 1563 break; 1564 case 1002: 1565 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1566 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON); 1567 break; 1568 case 1003: 1569 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1570 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_ALL); 1571 break; 1572 case 1004: 1573 if (ictx->ctx.s->mode & MODE_FOCUSON) 1574 break; 1575 screen_write_mode_set(&ictx->ctx, MODE_FOCUSON); 1576 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1577 break; 1578 case 1005: 1579 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8); 1580 break; 1581 case 1006: 1582 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR); 1583 break; 1584 case 47: 1585 case 1047: 1586 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1587 break; 1588 case 1049: 1589 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1590 break; 1591 case 2004: 1592 screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE); 1593 break; 1594 default: 1595 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1596 break; 1597 } 1598 } 1599} 1600 1601/* Handle CSI window operations. */ 1602static void 1603input_csi_dispatch_winops(struct input_ctx *ictx) 1604{ 1605 struct window_pane *wp = ictx->wp; 1606 int n, m; 1607 1608 m = 0; 1609 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1610 switch (n) { 1611 case 1: 1612 case 2: 1613 case 5: 1614 case 6: 1615 case 7: 1616 case 11: 1617 case 13: 1618 case 14: 1619 case 19: 1620 case 20: 1621 case 21: 1622 case 24: 1623 break; 1624 case 3: 1625 case 4: 1626 case 8: 1627 m++; 1628 if (input_get(ictx, m, 0, -1) == -1) 1629 return; 1630 /* FALLTHROUGH */ 1631 case 9: 1632 case 10: 1633 case 22: 1634 case 23: 1635 m++; 1636 if (input_get(ictx, m, 0, -1) == -1) 1637 return; 1638 break; 1639 case 18: 1640 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1641 break; 1642 default: 1643 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1644 break; 1645 } 1646 m++; 1647 } 1648} 1649 1650/* Handle CSI SGR for 256 colours. */ 1651static void 1652input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1653{ 1654 struct grid_cell *gc = &ictx->cell.cell; 1655 int c; 1656 1657 (*i)++; 1658 c = input_get(ictx, *i, 0, -1); 1659 if (c == -1) { 1660 if (fgbg == 38) 1661 gc->fg = 8; 1662 else if (fgbg == 48) 1663 gc->bg = 8; 1664 } else { 1665 if (fgbg == 38) 1666 gc->fg = c | COLOUR_FLAG_256; 1667 else if (fgbg == 48) 1668 gc->bg = c | COLOUR_FLAG_256; 1669 } 1670} 1671 1672/* Handle CSI SGR for RGB colours. */ 1673static void 1674input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1675{ 1676 struct grid_cell *gc = &ictx->cell.cell; 1677 int r, g, b; 1678 1679 (*i)++; 1680 r = input_get(ictx, *i, 0, -1); 1681 if (r == -1 || r > 255) 1682 return; 1683 (*i)++; 1684 g = input_get(ictx, *i, 0, -1); 1685 if (g == -1 || g > 255) 1686 return; 1687 (*i)++; 1688 b = input_get(ictx, *i, 0, -1); 1689 if (b == -1 || b > 255) 1690 return; 1691 1692 if (fgbg == 38) 1693 gc->fg = colour_join_rgb(r, g, b); 1694 else if (fgbg == 48) 1695 gc->bg = colour_join_rgb(r, g, b); 1696} 1697 1698/* Handle CSI SGR. */ 1699static void 1700input_csi_dispatch_sgr(struct input_ctx *ictx) 1701{ 1702 struct grid_cell *gc = &ictx->cell.cell; 1703 u_int i; 1704 int n; 1705 1706 if (ictx->param_list_len == 0) { 1707 memcpy(gc, &grid_default_cell, sizeof *gc); 1708 return; 1709 } 1710 1711 for (i = 0; i < ictx->param_list_len; i++) { 1712 n = input_get(ictx, i, 0, 0); 1713 1714 if (n == 38 || n == 48) { 1715 i++; 1716 switch (input_get(ictx, i, 0, -1)) { 1717 case 2: 1718 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1719 break; 1720 case 5: 1721 input_csi_dispatch_sgr_256(ictx, n, &i); 1722 break; 1723 } 1724 continue; 1725 } 1726 1727 switch (n) { 1728 case 0: 1729 case 10: 1730 memcpy(gc, &grid_default_cell, sizeof *gc); 1731 break; 1732 case 1: 1733 gc->attr |= GRID_ATTR_BRIGHT; 1734 break; 1735 case 2: 1736 gc->attr |= GRID_ATTR_DIM; 1737 break; 1738 case 3: 1739 gc->attr |= GRID_ATTR_ITALICS; 1740 break; 1741 case 4: 1742 gc->attr |= GRID_ATTR_UNDERSCORE; 1743 break; 1744 case 5: 1745 gc->attr |= GRID_ATTR_BLINK; 1746 break; 1747 case 7: 1748 gc->attr |= GRID_ATTR_REVERSE; 1749 break; 1750 case 8: 1751 gc->attr |= GRID_ATTR_HIDDEN; 1752 break; 1753 case 22: 1754 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 1755 break; 1756 case 23: 1757 gc->attr &= ~GRID_ATTR_ITALICS; 1758 break; 1759 case 24: 1760 gc->attr &= ~GRID_ATTR_UNDERSCORE; 1761 break; 1762 case 25: 1763 gc->attr &= ~GRID_ATTR_BLINK; 1764 break; 1765 case 27: 1766 gc->attr &= ~GRID_ATTR_REVERSE; 1767 break; 1768 case 30: 1769 case 31: 1770 case 32: 1771 case 33: 1772 case 34: 1773 case 35: 1774 case 36: 1775 case 37: 1776 gc->fg = n - 30; 1777 break; 1778 case 39: 1779 gc->fg = 8; 1780 break; 1781 case 40: 1782 case 41: 1783 case 42: 1784 case 43: 1785 case 44: 1786 case 45: 1787 case 46: 1788 case 47: 1789 gc->bg = n - 40; 1790 break; 1791 case 49: 1792 gc->bg = 8; 1793 break; 1794 case 90: 1795 case 91: 1796 case 92: 1797 case 93: 1798 case 94: 1799 case 95: 1800 case 96: 1801 case 97: 1802 gc->fg = n; 1803 break; 1804 case 100: 1805 case 101: 1806 case 102: 1807 case 103: 1808 case 104: 1809 case 105: 1810 case 106: 1811 case 107: 1812 gc->bg = n - 10; 1813 break; 1814 } 1815 } 1816} 1817 1818/* DCS terminator (ST) received. */ 1819static int 1820input_dcs_dispatch(struct input_ctx *ictx) 1821{ 1822 const char prefix[] = "tmux;"; 1823 const u_int prefix_len = (sizeof prefix) - 1; 1824 1825 if (ictx->flags & INPUT_DISCARD) 1826 return (0); 1827 1828 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1829 1830 /* Check for tmux prefix. */ 1831 if (ictx->input_len >= prefix_len && 1832 strncmp(ictx->input_buf, prefix, prefix_len) == 0) { 1833 screen_write_rawstring(&ictx->ctx, 1834 ictx->input_buf + prefix_len, ictx->input_len - prefix_len); 1835 } 1836 1837 return (0); 1838} 1839 1840/* OSC string started. */ 1841static void 1842input_enter_osc(struct input_ctx *ictx) 1843{ 1844 log_debug("%s", __func__); 1845 1846 input_clear(ictx); 1847} 1848 1849/* OSC terminator (ST) received. */ 1850static void 1851input_exit_osc(struct input_ctx *ictx) 1852{ 1853 u_char *p = ictx->input_buf; 1854 u_int option; 1855 1856 if (ictx->flags & INPUT_DISCARD) 1857 return; 1858 if (ictx->input_len < 1 || *p < '0' || *p > '9') 1859 return; 1860 1861 log_debug("%s: \"%s\"", __func__, p); 1862 1863 option = 0; 1864 while (*p >= '0' && *p <= '9') 1865 option = option * 10 + *p++ - '0'; 1866 if (*p == ';') 1867 p++; 1868 1869 switch (option) { 1870 case 0: 1871 case 2: 1872 screen_set_title(ictx->ctx.s, p); 1873 server_status_window(ictx->wp->window); 1874 break; 1875 case 4: 1876 input_osc_4(ictx->wp, p); 1877 break; 1878 case 52: 1879 input_osc_52(ictx->wp, p); 1880 break; 1881 case 12: 1882 if (*p != '?') /* ? is colour request */ 1883 screen_set_cursor_colour(ictx->ctx.s, p); 1884 break; 1885 case 104: 1886 input_osc_104(ictx->wp, p); 1887 break; 1888 case 112: 1889 if (*p == '\0') /* no arguments allowed */ 1890 screen_set_cursor_colour(ictx->ctx.s, ""); 1891 break; 1892 default: 1893 log_debug("%s: unknown '%u'", __func__, option); 1894 break; 1895 } 1896} 1897 1898/* APC string started. */ 1899static void 1900input_enter_apc(struct input_ctx *ictx) 1901{ 1902 log_debug("%s", __func__); 1903 1904 input_clear(ictx); 1905} 1906 1907/* APC terminator (ST) received. */ 1908static void 1909input_exit_apc(struct input_ctx *ictx) 1910{ 1911 if (ictx->flags & INPUT_DISCARD) 1912 return; 1913 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1914 1915 screen_set_title(ictx->ctx.s, ictx->input_buf); 1916 server_status_window(ictx->wp->window); 1917} 1918 1919/* Rename string started. */ 1920static void 1921input_enter_rename(struct input_ctx *ictx) 1922{ 1923 log_debug("%s", __func__); 1924 1925 input_clear(ictx); 1926} 1927 1928/* Rename terminator (ST) received. */ 1929static void 1930input_exit_rename(struct input_ctx *ictx) 1931{ 1932 if (ictx->flags & INPUT_DISCARD) 1933 return; 1934 if (!options_get_number(ictx->wp->window->options, "allow-rename")) 1935 return; 1936 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1937 1938 window_set_name(ictx->wp->window, ictx->input_buf); 1939 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 1940 1941 server_status_window(ictx->wp->window); 1942} 1943 1944/* Open UTF-8 character. */ 1945static int 1946input_utf8_open(struct input_ctx *ictx) 1947{ 1948 struct utf8_data *ud = &ictx->utf8data; 1949 1950 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 1951 fatalx("UTF-8 open invalid %#x", ictx->ch); 1952 1953 log_debug("%s %hhu", __func__, ud->size); 1954 1955 return (0); 1956} 1957 1958/* Append to UTF-8 character. */ 1959static int 1960input_utf8_add(struct input_ctx *ictx) 1961{ 1962 struct utf8_data *ud = &ictx->utf8data; 1963 1964 if (utf8_append(ud, ictx->ch) != UTF8_MORE) 1965 fatalx("UTF-8 add invalid %#x", ictx->ch); 1966 1967 log_debug("%s", __func__); 1968 1969 return (0); 1970} 1971 1972/* Close UTF-8 string. */ 1973static int 1974input_utf8_close(struct input_ctx *ictx) 1975{ 1976 struct utf8_data *ud = &ictx->utf8data; 1977 1978 if (utf8_append(ud, ictx->ch) != UTF8_DONE) { 1979 /* 1980 * An error here could be invalid UTF-8 or it could be a 1981 * nonprintable character for which we can't get the 1982 * width. Drop it. 1983 */ 1984 return (0); 1985 } 1986 1987 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 1988 (int)ud->size, ud->data, ud->width); 1989 1990 utf8_copy(&ictx->cell.cell.data, ud); 1991 screen_write_cell(&ictx->ctx, &ictx->cell.cell); 1992 1993 return (0); 1994} 1995 1996/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 1997static void 1998input_osc_4(struct window_pane *wp, const char *p) 1999{ 2000 char *copy, *s, *next = NULL; 2001 long idx; 2002 u_int r, g, b; 2003 2004 copy = s = xstrdup(p); 2005 while (s != NULL && *s != '\0') { 2006 idx = strtol(s, &next, 10); 2007 if (*next++ != ';') 2008 goto bad; 2009 if (idx < 0 || idx >= 0x100) 2010 goto bad; 2011 2012 s = strsep(&next, ";"); 2013 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2014 s = next; 2015 continue; 2016 } 2017 2018 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2019 s = next; 2020 } 2021 2022 free(copy); 2023 return; 2024 2025bad: 2026 log_debug("bad OSC 4: %s", p); 2027 free(copy); 2028} 2029 2030/* Handle the OSC 52 sequence for setting the clipboard. */ 2031static void 2032input_osc_52(struct window_pane *wp, const char *p) 2033{ 2034 char *end; 2035 size_t len; 2036 u_char *out; 2037 int outlen; 2038 struct screen_write_ctx ctx; 2039 2040 if ((end = strchr(p, ';')) == NULL) 2041 return; 2042 end++; 2043 if (*end == '\0') 2044 return; 2045 2046 len = (strlen(end) / 4) * 3; 2047 if (len == 0) 2048 return; 2049 2050 out = xmalloc(len); 2051 if ((outlen = b64_pton(end, out, len)) == -1) { 2052 free(out); 2053 return; 2054 } 2055 2056 if (options_get_number(global_options, "set-clipboard")) { 2057 screen_write_start(&ctx, wp, NULL); 2058 screen_write_setselection(&ctx, out, outlen); 2059 screen_write_stop(&ctx); 2060 } 2061 paste_add(out, outlen); 2062} 2063 2064/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2065static void 2066input_osc_104(struct window_pane *wp, const char *p) 2067{ 2068 char *copy, *s; 2069 long idx; 2070 2071 if (*p == '\0') { 2072 window_pane_reset_palette(wp); 2073 return; 2074 } 2075 2076 copy = s = xstrdup(p); 2077 while (*s != '\0') { 2078 idx = strtol(s, &s, 10); 2079 if (*s != '\0' && *s != ';') 2080 goto bad; 2081 if (idx < 0 || idx >= 0x100) 2082 goto bad; 2083 2084 window_pane_unset_palette(wp, idx); 2085 if (*s == ';') 2086 s++; 2087 } 2088 free(copy); 2089 return; 2090 2091bad: 2092 log_debug("bad OSC 104: %s", p); 2093 free(copy); 2094} 2095