input.c revision 1.180
1/* $OpenBSD: input.c,v 1.180 2020/06/01 09:43:01 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 <ctype.h> 24#include <resolv.h> 25#include <stdlib.h> 26#include <string.h> 27#include <time.h> 28 29#include "tmux.h" 30 31/* 32 * Based on the description by Paul Williams at: 33 * 34 * https://vt100.net/emu/dec_ansi_parser 35 * 36 * With the following changes: 37 * 38 * - 7-bit only. 39 * 40 * - Support for UTF-8. 41 * 42 * - OSC (but not APC) may be terminated by \007 as well as ST. 43 * 44 * - A state for APC similar to OSC. Some terminals appear to use this to set 45 * the title. 46 * 47 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 48 * pretty stupid but not supporting it is more trouble than it is worth. 49 * 50 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 51 * be passed to the underlying terminals. 52 */ 53 54/* Input parser cell. */ 55struct input_cell { 56 struct grid_cell cell; 57 int set; 58 int g0set; /* 1 if ACS */ 59 int g1set; /* 1 if ACS */ 60}; 61 62/* Input parser argument. */ 63struct input_param { 64 enum { 65 INPUT_MISSING, 66 INPUT_NUMBER, 67 INPUT_STRING 68 } type; 69 union { 70 int num; 71 char *str; 72 }; 73}; 74 75/* Input parser context. */ 76struct input_ctx { 77 struct window_pane *wp; 78 struct bufferevent *event; 79 struct screen_write_ctx ctx; 80 81 struct input_cell cell; 82 83 struct input_cell old_cell; 84 u_int old_cx; 85 u_int old_cy; 86 int old_mode; 87 88 u_char interm_buf[4]; 89 size_t interm_len; 90 91 u_char param_buf[64]; 92 size_t param_len; 93 94#define INPUT_BUF_START 32 95#define INPUT_BUF_LIMIT 1048576 96 u_char *input_buf; 97 size_t input_len; 98 size_t input_space; 99 enum { 100 INPUT_END_ST, 101 INPUT_END_BEL 102 } input_end; 103 104 struct input_param param_list[24]; 105 u_int param_list_len; 106 107 struct utf8_data utf8data; 108 int utf8started; 109 110 int ch; 111 int last; 112 113 int flags; 114#define INPUT_DISCARD 0x1 115 116 const struct input_state *state; 117 118 struct event timer; 119 120 /* 121 * All input received since we were last in the ground state. Sent to 122 * control clients on connection. 123 */ 124 struct evbuffer *since_ground; 125}; 126 127/* Helper functions. */ 128struct input_transition; 129static int input_split(struct input_ctx *); 130static int input_get(struct input_ctx *, u_int, int, int); 131static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 132static void input_set_state(struct input_ctx *, 133 const struct input_transition *); 134static void input_reset_cell(struct input_ctx *); 135 136static void input_osc_4(struct input_ctx *, const char *); 137static void input_osc_10(struct input_ctx *, const char *); 138static void input_osc_11(struct input_ctx *, const char *); 139static void input_osc_52(struct input_ctx *, const char *); 140static void input_osc_104(struct input_ctx *, const char *); 141 142/* Transition entry/exit handlers. */ 143static void input_clear(struct input_ctx *); 144static void input_ground(struct input_ctx *); 145static void input_enter_dcs(struct input_ctx *); 146static void input_enter_osc(struct input_ctx *); 147static void input_exit_osc(struct input_ctx *); 148static void input_enter_apc(struct input_ctx *); 149static void input_exit_apc(struct input_ctx *); 150static void input_enter_rename(struct input_ctx *); 151static void input_exit_rename(struct input_ctx *); 152 153/* Input state handlers. */ 154static int input_print(struct input_ctx *); 155static int input_intermediate(struct input_ctx *); 156static int input_parameter(struct input_ctx *); 157static int input_input(struct input_ctx *); 158static int input_c0_dispatch(struct input_ctx *); 159static int input_esc_dispatch(struct input_ctx *); 160static int input_csi_dispatch(struct input_ctx *); 161static void input_csi_dispatch_rm(struct input_ctx *); 162static void input_csi_dispatch_rm_private(struct input_ctx *); 163static void input_csi_dispatch_sm(struct input_ctx *); 164static void input_csi_dispatch_sm_private(struct input_ctx *); 165static void input_csi_dispatch_winops(struct input_ctx *); 166static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 167static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 168static void input_csi_dispatch_sgr(struct input_ctx *); 169static int input_dcs_dispatch(struct input_ctx *); 170static int input_top_bit_set(struct input_ctx *); 171static int input_end_bel(struct input_ctx *); 172 173/* Command table comparison function. */ 174static int input_table_compare(const void *, const void *); 175 176/* Command table entry. */ 177struct input_table_entry { 178 int ch; 179 const char *interm; 180 int type; 181}; 182 183/* Escape commands. */ 184enum input_esc_type { 185 INPUT_ESC_DECALN, 186 INPUT_ESC_DECKPAM, 187 INPUT_ESC_DECKPNM, 188 INPUT_ESC_DECRC, 189 INPUT_ESC_DECSC, 190 INPUT_ESC_HTS, 191 INPUT_ESC_IND, 192 INPUT_ESC_NEL, 193 INPUT_ESC_RI, 194 INPUT_ESC_RIS, 195 INPUT_ESC_SCSG0_OFF, 196 INPUT_ESC_SCSG0_ON, 197 INPUT_ESC_SCSG1_OFF, 198 INPUT_ESC_SCSG1_ON, 199 INPUT_ESC_ST, 200}; 201 202/* Escape command table. */ 203static const struct input_table_entry input_esc_table[] = { 204 { '0', "(", INPUT_ESC_SCSG0_ON }, 205 { '0', ")", INPUT_ESC_SCSG1_ON }, 206 { '7', "", INPUT_ESC_DECSC }, 207 { '8', "", INPUT_ESC_DECRC }, 208 { '8', "#", INPUT_ESC_DECALN }, 209 { '=', "", INPUT_ESC_DECKPAM }, 210 { '>', "", INPUT_ESC_DECKPNM }, 211 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 212 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 213 { 'D', "", INPUT_ESC_IND }, 214 { 'E', "", INPUT_ESC_NEL }, 215 { 'H', "", INPUT_ESC_HTS }, 216 { 'M', "", INPUT_ESC_RI }, 217 { '\\', "", INPUT_ESC_ST }, 218 { 'c', "", INPUT_ESC_RIS }, 219}; 220 221/* Control (CSI) commands. */ 222enum input_csi_type { 223 INPUT_CSI_CBT, 224 INPUT_CSI_CNL, 225 INPUT_CSI_CPL, 226 INPUT_CSI_CUB, 227 INPUT_CSI_CUD, 228 INPUT_CSI_CUF, 229 INPUT_CSI_CUP, 230 INPUT_CSI_CUU, 231 INPUT_CSI_DA, 232 INPUT_CSI_DA_TWO, 233 INPUT_CSI_DCH, 234 INPUT_CSI_DECSCUSR, 235 INPUT_CSI_DECSTBM, 236 INPUT_CSI_DL, 237 INPUT_CSI_DSR, 238 INPUT_CSI_ECH, 239 INPUT_CSI_ED, 240 INPUT_CSI_EL, 241 INPUT_CSI_HPA, 242 INPUT_CSI_ICH, 243 INPUT_CSI_IL, 244 INPUT_CSI_MODOFF, 245 INPUT_CSI_MODSET, 246 INPUT_CSI_RCP, 247 INPUT_CSI_REP, 248 INPUT_CSI_RM, 249 INPUT_CSI_RM_PRIVATE, 250 INPUT_CSI_SCP, 251 INPUT_CSI_SD, 252 INPUT_CSI_SGR, 253 INPUT_CSI_SM, 254 INPUT_CSI_SM_PRIVATE, 255 INPUT_CSI_SU, 256 INPUT_CSI_TBC, 257 INPUT_CSI_VPA, 258 INPUT_CSI_WINOPS, 259 INPUT_CSI_XDA, 260}; 261 262/* Control (CSI) command table. */ 263static const struct input_table_entry input_csi_table[] = { 264 { '@', "", INPUT_CSI_ICH }, 265 { 'A', "", INPUT_CSI_CUU }, 266 { 'B', "", INPUT_CSI_CUD }, 267 { 'C', "", INPUT_CSI_CUF }, 268 { 'D', "", INPUT_CSI_CUB }, 269 { 'E', "", INPUT_CSI_CNL }, 270 { 'F', "", INPUT_CSI_CPL }, 271 { 'G', "", INPUT_CSI_HPA }, 272 { 'H', "", INPUT_CSI_CUP }, 273 { 'J', "", INPUT_CSI_ED }, 274 { 'K', "", INPUT_CSI_EL }, 275 { 'L', "", INPUT_CSI_IL }, 276 { 'M', "", INPUT_CSI_DL }, 277 { 'P', "", INPUT_CSI_DCH }, 278 { 'S', "", INPUT_CSI_SU }, 279 { 'T', "", INPUT_CSI_SD }, 280 { 'X', "", INPUT_CSI_ECH }, 281 { 'Z', "", INPUT_CSI_CBT }, 282 { '`', "", INPUT_CSI_HPA }, 283 { 'b', "", INPUT_CSI_REP }, 284 { 'c', "", INPUT_CSI_DA }, 285 { 'c', ">", INPUT_CSI_DA_TWO }, 286 { 'd', "", INPUT_CSI_VPA }, 287 { 'f', "", INPUT_CSI_CUP }, 288 { 'g', "", INPUT_CSI_TBC }, 289 { 'h', "", INPUT_CSI_SM }, 290 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 291 { 'l', "", INPUT_CSI_RM }, 292 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 293 { 'm', "", INPUT_CSI_SGR }, 294 { 'm', ">", INPUT_CSI_MODSET }, 295 { 'n', "", INPUT_CSI_DSR }, 296 { 'n', ">", INPUT_CSI_MODOFF }, 297 { 'q', " ", INPUT_CSI_DECSCUSR }, 298 { 'q', ">", INPUT_CSI_XDA }, 299 { 'r', "", INPUT_CSI_DECSTBM }, 300 { 's', "", INPUT_CSI_SCP }, 301 { 't', "", INPUT_CSI_WINOPS }, 302 { 'u', "", INPUT_CSI_RCP }, 303}; 304 305/* Input transition. */ 306struct input_transition { 307 int first; 308 int last; 309 310 int (*handler)(struct input_ctx *); 311 const struct input_state *state; 312}; 313 314/* Input state. */ 315struct input_state { 316 const char *name; 317 void (*enter)(struct input_ctx *); 318 void (*exit)(struct input_ctx *); 319 const struct input_transition *transitions; 320}; 321 322/* State transitions available from all states. */ 323#define INPUT_STATE_ANYWHERE \ 324 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 325 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 326 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 327 328/* Forward declarations of state tables. */ 329static const struct input_transition input_state_ground_table[]; 330static const struct input_transition input_state_esc_enter_table[]; 331static const struct input_transition input_state_esc_intermediate_table[]; 332static const struct input_transition input_state_csi_enter_table[]; 333static const struct input_transition input_state_csi_parameter_table[]; 334static const struct input_transition input_state_csi_intermediate_table[]; 335static const struct input_transition input_state_csi_ignore_table[]; 336static const struct input_transition input_state_dcs_enter_table[]; 337static const struct input_transition input_state_dcs_parameter_table[]; 338static const struct input_transition input_state_dcs_intermediate_table[]; 339static const struct input_transition input_state_dcs_handler_table[]; 340static const struct input_transition input_state_dcs_escape_table[]; 341static const struct input_transition input_state_dcs_ignore_table[]; 342static const struct input_transition input_state_osc_string_table[]; 343static const struct input_transition input_state_apc_string_table[]; 344static const struct input_transition input_state_rename_string_table[]; 345static const struct input_transition input_state_consume_st_table[]; 346 347/* ground state definition. */ 348static const struct input_state input_state_ground = { 349 "ground", 350 input_ground, NULL, 351 input_state_ground_table 352}; 353 354/* esc_enter state definition. */ 355static const struct input_state input_state_esc_enter = { 356 "esc_enter", 357 input_clear, NULL, 358 input_state_esc_enter_table 359}; 360 361/* esc_intermediate state definition. */ 362static const struct input_state input_state_esc_intermediate = { 363 "esc_intermediate", 364 NULL, NULL, 365 input_state_esc_intermediate_table 366}; 367 368/* csi_enter state definition. */ 369static const struct input_state input_state_csi_enter = { 370 "csi_enter", 371 input_clear, NULL, 372 input_state_csi_enter_table 373}; 374 375/* csi_parameter state definition. */ 376static const struct input_state input_state_csi_parameter = { 377 "csi_parameter", 378 NULL, NULL, 379 input_state_csi_parameter_table 380}; 381 382/* csi_intermediate state definition. */ 383static const struct input_state input_state_csi_intermediate = { 384 "csi_intermediate", 385 NULL, NULL, 386 input_state_csi_intermediate_table 387}; 388 389/* csi_ignore state definition. */ 390static const struct input_state input_state_csi_ignore = { 391 "csi_ignore", 392 NULL, NULL, 393 input_state_csi_ignore_table 394}; 395 396/* dcs_enter state definition. */ 397static const struct input_state input_state_dcs_enter = { 398 "dcs_enter", 399 input_enter_dcs, NULL, 400 input_state_dcs_enter_table 401}; 402 403/* dcs_parameter state definition. */ 404static const struct input_state input_state_dcs_parameter = { 405 "dcs_parameter", 406 NULL, NULL, 407 input_state_dcs_parameter_table 408}; 409 410/* dcs_intermediate state definition. */ 411static const struct input_state input_state_dcs_intermediate = { 412 "dcs_intermediate", 413 NULL, NULL, 414 input_state_dcs_intermediate_table 415}; 416 417/* dcs_handler state definition. */ 418static const struct input_state input_state_dcs_handler = { 419 "dcs_handler", 420 NULL, NULL, 421 input_state_dcs_handler_table 422}; 423 424/* dcs_escape state definition. */ 425static const struct input_state input_state_dcs_escape = { 426 "dcs_escape", 427 NULL, NULL, 428 input_state_dcs_escape_table 429}; 430 431/* dcs_ignore state definition. */ 432static const struct input_state input_state_dcs_ignore = { 433 "dcs_ignore", 434 NULL, NULL, 435 input_state_dcs_ignore_table 436}; 437 438/* osc_string state definition. */ 439static const struct input_state input_state_osc_string = { 440 "osc_string", 441 input_enter_osc, input_exit_osc, 442 input_state_osc_string_table 443}; 444 445/* apc_string state definition. */ 446static const struct input_state input_state_apc_string = { 447 "apc_string", 448 input_enter_apc, input_exit_apc, 449 input_state_apc_string_table 450}; 451 452/* rename_string state definition. */ 453static const struct input_state input_state_rename_string = { 454 "rename_string", 455 input_enter_rename, input_exit_rename, 456 input_state_rename_string_table 457}; 458 459/* consume_st state definition. */ 460static const struct input_state input_state_consume_st = { 461 "consume_st", 462 input_enter_rename, NULL, /* rename also waits for ST */ 463 input_state_consume_st_table 464}; 465 466/* ground state table. */ 467static const struct input_transition input_state_ground_table[] = { 468 INPUT_STATE_ANYWHERE, 469 470 { 0x00, 0x17, input_c0_dispatch, NULL }, 471 { 0x19, 0x19, input_c0_dispatch, NULL }, 472 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 473 { 0x20, 0x7e, input_print, NULL }, 474 { 0x7f, 0x7f, NULL, NULL }, 475 { 0x80, 0xff, input_top_bit_set, NULL }, 476 477 { -1, -1, NULL, NULL } 478}; 479 480/* esc_enter state table. */ 481static const struct input_transition input_state_esc_enter_table[] = { 482 INPUT_STATE_ANYWHERE, 483 484 { 0x00, 0x17, input_c0_dispatch, NULL }, 485 { 0x19, 0x19, input_c0_dispatch, NULL }, 486 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 487 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 488 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 489 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 490 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 491 { 0x58, 0x58, NULL, &input_state_consume_st }, 492 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 493 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 494 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 495 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 496 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 497 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 498 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 499 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 500 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 501 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 502 { 0x7f, 0xff, NULL, NULL }, 503 504 { -1, -1, NULL, NULL } 505}; 506 507/* esc_intermediate state table. */ 508static const struct input_transition input_state_esc_intermediate_table[] = { 509 INPUT_STATE_ANYWHERE, 510 511 { 0x00, 0x17, input_c0_dispatch, NULL }, 512 { 0x19, 0x19, input_c0_dispatch, NULL }, 513 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 514 { 0x20, 0x2f, input_intermediate, NULL }, 515 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 516 { 0x7f, 0xff, NULL, NULL }, 517 518 { -1, -1, NULL, NULL } 519}; 520 521/* csi_enter state table. */ 522static const struct input_transition input_state_csi_enter_table[] = { 523 INPUT_STATE_ANYWHERE, 524 525 { 0x00, 0x17, input_c0_dispatch, NULL }, 526 { 0x19, 0x19, input_c0_dispatch, NULL }, 527 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 528 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 529 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 530 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 531 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 532 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 533 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 534 { 0x7f, 0xff, NULL, NULL }, 535 536 { -1, -1, NULL, NULL } 537}; 538 539/* csi_parameter state table. */ 540static const struct input_transition input_state_csi_parameter_table[] = { 541 INPUT_STATE_ANYWHERE, 542 543 { 0x00, 0x17, input_c0_dispatch, NULL }, 544 { 0x19, 0x19, input_c0_dispatch, NULL }, 545 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 546 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 547 { 0x30, 0x39, input_parameter, NULL }, 548 { 0x3a, 0x3a, input_parameter, NULL }, 549 { 0x3b, 0x3b, input_parameter, NULL }, 550 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 551 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 552 { 0x7f, 0xff, NULL, NULL }, 553 554 { -1, -1, NULL, NULL } 555}; 556 557/* csi_intermediate state table. */ 558static const struct input_transition input_state_csi_intermediate_table[] = { 559 INPUT_STATE_ANYWHERE, 560 561 { 0x00, 0x17, input_c0_dispatch, NULL }, 562 { 0x19, 0x19, input_c0_dispatch, NULL }, 563 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 564 { 0x20, 0x2f, input_intermediate, NULL }, 565 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 566 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 567 { 0x7f, 0xff, NULL, NULL }, 568 569 { -1, -1, NULL, NULL } 570}; 571 572/* csi_ignore state table. */ 573static const struct input_transition input_state_csi_ignore_table[] = { 574 INPUT_STATE_ANYWHERE, 575 576 { 0x00, 0x17, input_c0_dispatch, NULL }, 577 { 0x19, 0x19, input_c0_dispatch, NULL }, 578 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 579 { 0x20, 0x3f, NULL, NULL }, 580 { 0x40, 0x7e, NULL, &input_state_ground }, 581 { 0x7f, 0xff, NULL, NULL }, 582 583 { -1, -1, NULL, NULL } 584}; 585 586/* dcs_enter state table. */ 587static const struct input_transition input_state_dcs_enter_table[] = { 588 INPUT_STATE_ANYWHERE, 589 590 { 0x00, 0x17, NULL, NULL }, 591 { 0x19, 0x19, NULL, NULL }, 592 { 0x1c, 0x1f, NULL, NULL }, 593 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 594 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 595 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 596 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 597 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 598 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 599 { 0x7f, 0xff, NULL, NULL }, 600 601 { -1, -1, NULL, NULL } 602}; 603 604/* dcs_parameter state table. */ 605static const struct input_transition input_state_dcs_parameter_table[] = { 606 INPUT_STATE_ANYWHERE, 607 608 { 0x00, 0x17, NULL, NULL }, 609 { 0x19, 0x19, NULL, NULL }, 610 { 0x1c, 0x1f, NULL, NULL }, 611 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 612 { 0x30, 0x39, input_parameter, NULL }, 613 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 614 { 0x3b, 0x3b, input_parameter, NULL }, 615 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 616 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 617 { 0x7f, 0xff, NULL, NULL }, 618 619 { -1, -1, NULL, NULL } 620}; 621 622/* dcs_intermediate state table. */ 623static const struct input_transition input_state_dcs_intermediate_table[] = { 624 INPUT_STATE_ANYWHERE, 625 626 { 0x00, 0x17, NULL, NULL }, 627 { 0x19, 0x19, NULL, NULL }, 628 { 0x1c, 0x1f, NULL, NULL }, 629 { 0x20, 0x2f, input_intermediate, NULL }, 630 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 631 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 632 { 0x7f, 0xff, NULL, NULL }, 633 634 { -1, -1, NULL, NULL } 635}; 636 637/* dcs_handler state table. */ 638static const struct input_transition input_state_dcs_handler_table[] = { 639 /* No INPUT_STATE_ANYWHERE */ 640 641 { 0x00, 0x1a, input_input, NULL }, 642 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 643 { 0x1c, 0xff, input_input, NULL }, 644 645 { -1, -1, NULL, NULL } 646}; 647 648/* dcs_escape state table. */ 649static const struct input_transition input_state_dcs_escape_table[] = { 650 /* No INPUT_STATE_ANYWHERE */ 651 652 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 653 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 654 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 655 656 { -1, -1, NULL, NULL } 657}; 658 659/* dcs_ignore state table. */ 660static const struct input_transition input_state_dcs_ignore_table[] = { 661 INPUT_STATE_ANYWHERE, 662 663 { 0x00, 0x17, NULL, NULL }, 664 { 0x19, 0x19, NULL, NULL }, 665 { 0x1c, 0x1f, NULL, NULL }, 666 { 0x20, 0xff, NULL, NULL }, 667 668 { -1, -1, NULL, NULL } 669}; 670 671/* osc_string state table. */ 672static const struct input_transition input_state_osc_string_table[] = { 673 INPUT_STATE_ANYWHERE, 674 675 { 0x00, 0x06, NULL, NULL }, 676 { 0x07, 0x07, input_end_bel, &input_state_ground }, 677 { 0x08, 0x17, NULL, NULL }, 678 { 0x19, 0x19, NULL, NULL }, 679 { 0x1c, 0x1f, NULL, NULL }, 680 { 0x20, 0xff, input_input, NULL }, 681 682 { -1, -1, NULL, NULL } 683}; 684 685/* apc_string state table. */ 686static const struct input_transition input_state_apc_string_table[] = { 687 INPUT_STATE_ANYWHERE, 688 689 { 0x00, 0x17, NULL, NULL }, 690 { 0x19, 0x19, NULL, NULL }, 691 { 0x1c, 0x1f, NULL, NULL }, 692 { 0x20, 0xff, input_input, NULL }, 693 694 { -1, -1, NULL, NULL } 695}; 696 697/* rename_string state table. */ 698static const struct input_transition input_state_rename_string_table[] = { 699 INPUT_STATE_ANYWHERE, 700 701 { 0x00, 0x17, NULL, NULL }, 702 { 0x19, 0x19, NULL, NULL }, 703 { 0x1c, 0x1f, NULL, NULL }, 704 { 0x20, 0xff, input_input, NULL }, 705 706 { -1, -1, NULL, NULL } 707}; 708 709/* consume_st state table. */ 710static const struct input_transition input_state_consume_st_table[] = { 711 INPUT_STATE_ANYWHERE, 712 713 { 0x00, 0x17, NULL, NULL }, 714 { 0x19, 0x19, NULL, NULL }, 715 { 0x1c, 0x1f, NULL, NULL }, 716 { 0x20, 0xff, NULL, NULL }, 717 718 { -1, -1, NULL, NULL } 719}; 720 721/* Input table compare. */ 722static int 723input_table_compare(const void *key, const void *value) 724{ 725 const struct input_ctx *ictx = key; 726 const struct input_table_entry *entry = value; 727 728 if (ictx->ch != entry->ch) 729 return (ictx->ch - entry->ch); 730 return (strcmp(ictx->interm_buf, entry->interm)); 731} 732 733/* 734 * Timer - if this expires then have been waiting for a terminator for too 735 * long, so reset to ground. 736 */ 737static void 738input_timer_callback(__unused int fd, __unused short events, void *arg) 739{ 740 struct input_ctx *ictx = arg; 741 742 log_debug("%s: %s expired" , __func__, ictx->state->name); 743 input_reset(ictx, 0); 744} 745 746/* Start the timer. */ 747static void 748input_start_timer(struct input_ctx *ictx) 749{ 750 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 751 752 event_del(&ictx->timer); 753 event_add(&ictx->timer, &tv); 754} 755 756/* Reset cell state to default. */ 757static void 758input_reset_cell(struct input_ctx *ictx) 759{ 760 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 761 ictx->cell.set = 0; 762 ictx->cell.g0set = ictx->cell.g1set = 0; 763 764 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 765 ictx->old_cx = 0; 766 ictx->old_cy = 0; 767} 768 769/* Save screen state. */ 770static void 771input_save_state(struct input_ctx *ictx) 772{ 773 struct screen_write_ctx *sctx = &ictx->ctx; 774 struct screen *s = sctx->s; 775 776 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 777 ictx->old_cx = s->cx; 778 ictx->old_cy = s->cy; 779 ictx->old_mode = s->mode; 780} 781 782/* Restore screen state. */ 783static void 784input_restore_state(struct input_ctx *ictx) 785{ 786 struct screen_write_ctx *sctx = &ictx->ctx; 787 788 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 789 if (ictx->old_mode & MODE_ORIGIN) 790 screen_write_mode_set(sctx, MODE_ORIGIN); 791 else 792 screen_write_mode_clear(sctx, MODE_ORIGIN); 793 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 794} 795 796/* Initialise input parser. */ 797struct input_ctx * 798input_init(struct window_pane *wp, struct bufferevent *bev) 799{ 800 struct input_ctx *ictx; 801 802 ictx = xcalloc(1, sizeof *ictx); 803 ictx->wp = wp; 804 ictx->event = bev; 805 806 ictx->input_space = INPUT_BUF_START; 807 ictx->input_buf = xmalloc(INPUT_BUF_START); 808 809 ictx->since_ground = evbuffer_new(); 810 if (ictx->since_ground == NULL) 811 fatalx("out of memory"); 812 813 evtimer_set(&ictx->timer, input_timer_callback, ictx); 814 815 input_reset(ictx, 0); 816 return (ictx); 817} 818 819/* Destroy input parser. */ 820void 821input_free(struct input_ctx *ictx) 822{ 823 u_int i; 824 825 for (i = 0; i < ictx->param_list_len; i++) { 826 if (ictx->param_list[i].type == INPUT_STRING) 827 free(ictx->param_list[i].str); 828 } 829 830 event_del(&ictx->timer); 831 832 free(ictx->input_buf); 833 evbuffer_free(ictx->since_ground); 834 835 free(ictx); 836} 837 838/* Reset input state and clear screen. */ 839void 840input_reset(struct input_ctx *ictx, int clear) 841{ 842 struct screen_write_ctx *sctx = &ictx->ctx; 843 struct window_pane *wp = ictx->wp; 844 845 input_reset_cell(ictx); 846 847 if (clear && wp != NULL) { 848 if (TAILQ_EMPTY(&wp->modes)) 849 screen_write_start_pane(sctx, wp, &wp->base); 850 else 851 screen_write_start(sctx, &wp->base); 852 screen_write_reset(sctx); 853 screen_write_stop(sctx); 854 } 855 856 input_clear(ictx); 857 858 ictx->last = -1; 859 860 ictx->state = &input_state_ground; 861 ictx->flags = 0; 862} 863 864/* Return pending data. */ 865struct evbuffer * 866input_pending(struct input_ctx *ictx) 867{ 868 return (ictx->since_ground); 869} 870 871/* Change input state. */ 872static void 873input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 874{ 875 if (ictx->state->exit != NULL) 876 ictx->state->exit(ictx); 877 ictx->state = itr->state; 878 if (ictx->state->enter != NULL) 879 ictx->state->enter(ictx); 880} 881 882/* Parse data. */ 883static void 884input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 885{ 886 struct screen_write_ctx *sctx = &ictx->ctx; 887 const struct input_state *state = NULL; 888 const struct input_transition *itr = NULL; 889 size_t off = 0; 890 891 /* Parse the input. */ 892 while (off < len) { 893 ictx->ch = buf[off++]; 894 895 /* Find the transition. */ 896 if (ictx->state != state || 897 itr == NULL || 898 ictx->ch < itr->first || 899 ictx->ch > itr->last) { 900 itr = ictx->state->transitions; 901 while (itr->first != -1 && itr->last != -1) { 902 if (ictx->ch >= itr->first && 903 ictx->ch <= itr->last) 904 break; 905 itr++; 906 } 907 if (itr->first == -1 || itr->last == -1) { 908 /* No transition? Eh? */ 909 fatalx("no transition from state"); 910 } 911 } 912 state = ictx->state; 913 914 /* 915 * Any state except print stops the current collection. This is 916 * an optimization to avoid checking if the attributes have 917 * changed for every character. It will stop unnecessarily for 918 * sequences that don't make a terminal change, but they should 919 * be the minority. 920 */ 921 if (itr->handler != input_print) 922 screen_write_collect_end(sctx); 923 924 /* 925 * Execute the handler, if any. Don't switch state if it 926 * returns non-zero. 927 */ 928 if (itr->handler != NULL && itr->handler(ictx) != 0) 929 continue; 930 931 /* And switch state, if necessary. */ 932 if (itr->state != NULL) 933 input_set_state(ictx, itr); 934 935 /* If not in ground state, save input. */ 936 if (ictx->state != &input_state_ground) 937 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 938 } 939} 940 941/* Parse input from pane. */ 942void 943input_parse_pane(struct window_pane *wp) 944{ 945 void *new_data; 946 size_t new_size; 947 948 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 949 input_parse_buffer(wp, new_data, new_size); 950 window_pane_update_used_data(wp, &wp->offset, new_size); 951} 952 953/* Parse given input. */ 954void 955input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 956{ 957 struct input_ctx *ictx = wp->ictx; 958 struct screen_write_ctx *sctx = &ictx->ctx; 959 960 if (len == 0) 961 return; 962 963 window_update_activity(wp->window); 964 wp->flags |= PANE_CHANGED; 965 966 /* NULL wp if there is a mode set as don't want to update the tty. */ 967 if (TAILQ_EMPTY(&wp->modes)) 968 screen_write_start_pane(sctx, wp, &wp->base); 969 else 970 screen_write_start(sctx, &wp->base); 971 972 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 973 ictx->state->name, len, (int)len, buf); 974 975 input_parse(ictx, buf, len); 976 screen_write_stop(sctx); 977} 978 979/* Parse given input for screen. */ 980void 981input_parse_screen(struct input_ctx *ictx, struct screen *s, 982 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 983{ 984 struct screen_write_ctx *sctx = &ictx->ctx; 985 986 if (len == 0) 987 return; 988 989 screen_write_start_callback(sctx, s, cb, arg); 990 input_parse(ictx, buf, len); 991 screen_write_stop(sctx); 992} 993 994/* Split the parameter list (if any). */ 995static int 996input_split(struct input_ctx *ictx) 997{ 998 const char *errstr; 999 char *ptr, *out; 1000 struct input_param *ip; 1001 u_int i; 1002 1003 for (i = 0; i < ictx->param_list_len; i++) { 1004 if (ictx->param_list[i].type == INPUT_STRING) 1005 free(ictx->param_list[i].str); 1006 } 1007 ictx->param_list_len = 0; 1008 1009 if (ictx->param_len == 0) 1010 return (0); 1011 ip = &ictx->param_list[0]; 1012 1013 ptr = ictx->param_buf; 1014 while ((out = strsep(&ptr, ";")) != NULL) { 1015 if (*out == '\0') 1016 ip->type = INPUT_MISSING; 1017 else { 1018 if (strchr(out, ':') != NULL) { 1019 ip->type = INPUT_STRING; 1020 ip->str = xstrdup(out); 1021 } else { 1022 ip->type = INPUT_NUMBER; 1023 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1024 if (errstr != NULL) 1025 return (-1); 1026 } 1027 } 1028 ip = &ictx->param_list[++ictx->param_list_len]; 1029 if (ictx->param_list_len == nitems(ictx->param_list)) 1030 return (-1); 1031 } 1032 1033 for (i = 0; i < ictx->param_list_len; i++) { 1034 ip = &ictx->param_list[i]; 1035 if (ip->type == INPUT_MISSING) 1036 log_debug("parameter %u: missing", i); 1037 else if (ip->type == INPUT_STRING) 1038 log_debug("parameter %u: string %s", i, ip->str); 1039 else if (ip->type == INPUT_NUMBER) 1040 log_debug("parameter %u: number %d", i, ip->num); 1041 } 1042 1043 return (0); 1044} 1045 1046/* Get an argument or return default value. */ 1047static int 1048input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1049{ 1050 struct input_param *ip; 1051 int retval; 1052 1053 if (validx >= ictx->param_list_len) 1054 return (defval); 1055 ip = &ictx->param_list[validx]; 1056 if (ip->type == INPUT_MISSING) 1057 return (defval); 1058 if (ip->type == INPUT_STRING) 1059 return (-1); 1060 retval = ip->num; 1061 if (retval < minval) 1062 return (minval); 1063 return (retval); 1064} 1065 1066/* Reply to terminal query. */ 1067static void 1068input_reply(struct input_ctx *ictx, const char *fmt, ...) 1069{ 1070 struct bufferevent *bev = ictx->event; 1071 va_list ap; 1072 char *reply; 1073 1074 va_start(ap, fmt); 1075 xvasprintf(&reply, fmt, ap); 1076 va_end(ap); 1077 1078 bufferevent_write(bev, reply, strlen(reply)); 1079 free(reply); 1080} 1081 1082/* Clear saved state. */ 1083static void 1084input_clear(struct input_ctx *ictx) 1085{ 1086 event_del(&ictx->timer); 1087 1088 *ictx->interm_buf = '\0'; 1089 ictx->interm_len = 0; 1090 1091 *ictx->param_buf = '\0'; 1092 ictx->param_len = 0; 1093 1094 *ictx->input_buf = '\0'; 1095 ictx->input_len = 0; 1096 1097 ictx->input_end = INPUT_END_ST; 1098 1099 ictx->flags &= ~INPUT_DISCARD; 1100} 1101 1102/* Reset for ground state. */ 1103static void 1104input_ground(struct input_ctx *ictx) 1105{ 1106 event_del(&ictx->timer); 1107 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1108 1109 if (ictx->input_space > INPUT_BUF_START) { 1110 ictx->input_space = INPUT_BUF_START; 1111 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1112 } 1113} 1114 1115/* Output this character to the screen. */ 1116static int 1117input_print(struct input_ctx *ictx) 1118{ 1119 struct screen_write_ctx *sctx = &ictx->ctx; 1120 int set; 1121 1122 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1123 1124 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1125 if (set == 1) 1126 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1127 else 1128 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1129 1130 utf8_set(&ictx->cell.cell.data, ictx->ch); 1131 screen_write_collect_add(sctx, &ictx->cell.cell); 1132 ictx->last = ictx->ch; 1133 1134 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1135 1136 return (0); 1137} 1138 1139/* Collect intermediate string. */ 1140static int 1141input_intermediate(struct input_ctx *ictx) 1142{ 1143 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1144 ictx->flags |= INPUT_DISCARD; 1145 else { 1146 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1147 ictx->interm_buf[ictx->interm_len] = '\0'; 1148 } 1149 1150 return (0); 1151} 1152 1153/* Collect parameter string. */ 1154static int 1155input_parameter(struct input_ctx *ictx) 1156{ 1157 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1158 ictx->flags |= INPUT_DISCARD; 1159 else { 1160 ictx->param_buf[ictx->param_len++] = ictx->ch; 1161 ictx->param_buf[ictx->param_len] = '\0'; 1162 } 1163 1164 return (0); 1165} 1166 1167/* Collect input string. */ 1168static int 1169input_input(struct input_ctx *ictx) 1170{ 1171 size_t available; 1172 1173 available = ictx->input_space; 1174 while (ictx->input_len + 1 >= available) { 1175 available *= 2; 1176 if (available > INPUT_BUF_LIMIT) { 1177 ictx->flags |= INPUT_DISCARD; 1178 return (0); 1179 } 1180 ictx->input_buf = xrealloc(ictx->input_buf, available); 1181 ictx->input_space = available; 1182 } 1183 ictx->input_buf[ictx->input_len++] = ictx->ch; 1184 ictx->input_buf[ictx->input_len] = '\0'; 1185 1186 return (0); 1187} 1188 1189/* Execute C0 control sequence. */ 1190static int 1191input_c0_dispatch(struct input_ctx *ictx) 1192{ 1193 struct screen_write_ctx *sctx = &ictx->ctx; 1194 struct window_pane *wp = ictx->wp; 1195 struct screen *s = sctx->s; 1196 1197 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1198 1199 log_debug("%s: '%c'", __func__, ictx->ch); 1200 1201 switch (ictx->ch) { 1202 case '\000': /* NUL */ 1203 break; 1204 case '\007': /* BEL */ 1205 if (wp != NULL) 1206 alerts_queue(wp->window, WINDOW_BELL); 1207 break; 1208 case '\010': /* BS */ 1209 screen_write_backspace(sctx); 1210 break; 1211 case '\011': /* HT */ 1212 /* Don't tab beyond the end of the line. */ 1213 if (s->cx >= screen_size_x(s) - 1) 1214 break; 1215 1216 /* Find the next tab point, or use the last column if none. */ 1217 do { 1218 s->cx++; 1219 if (bit_test(s->tabs, s->cx)) 1220 break; 1221 } while (s->cx < screen_size_x(s) - 1); 1222 break; 1223 case '\012': /* LF */ 1224 case '\013': /* VT */ 1225 case '\014': /* FF */ 1226 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1227 if (s->mode & MODE_CRLF) 1228 screen_write_carriagereturn(sctx); 1229 break; 1230 case '\015': /* CR */ 1231 screen_write_carriagereturn(sctx); 1232 break; 1233 case '\016': /* SO */ 1234 ictx->cell.set = 1; 1235 break; 1236 case '\017': /* SI */ 1237 ictx->cell.set = 0; 1238 break; 1239 default: 1240 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1241 break; 1242 } 1243 1244 ictx->last = -1; 1245 return (0); 1246} 1247 1248/* Execute escape sequence. */ 1249static int 1250input_esc_dispatch(struct input_ctx *ictx) 1251{ 1252 struct screen_write_ctx *sctx = &ictx->ctx; 1253 struct window_pane *wp = ictx->wp; 1254 struct screen *s = sctx->s; 1255 struct input_table_entry *entry; 1256 1257 if (ictx->flags & INPUT_DISCARD) 1258 return (0); 1259 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1260 1261 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1262 sizeof input_esc_table[0], input_table_compare); 1263 if (entry == NULL) { 1264 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1265 return (0); 1266 } 1267 1268 switch (entry->type) { 1269 case INPUT_ESC_RIS: 1270 if (wp != NULL) 1271 window_pane_reset_palette(wp); 1272 input_reset_cell(ictx); 1273 screen_write_reset(sctx); 1274 break; 1275 case INPUT_ESC_IND: 1276 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1277 break; 1278 case INPUT_ESC_NEL: 1279 screen_write_carriagereturn(sctx); 1280 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1281 break; 1282 case INPUT_ESC_HTS: 1283 if (s->cx < screen_size_x(s)) 1284 bit_set(s->tabs, s->cx); 1285 break; 1286 case INPUT_ESC_RI: 1287 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1288 break; 1289 case INPUT_ESC_DECKPAM: 1290 screen_write_mode_set(sctx, MODE_KKEYPAD); 1291 break; 1292 case INPUT_ESC_DECKPNM: 1293 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1294 break; 1295 case INPUT_ESC_DECSC: 1296 input_save_state(ictx); 1297 break; 1298 case INPUT_ESC_DECRC: 1299 input_restore_state(ictx); 1300 break; 1301 case INPUT_ESC_DECALN: 1302 screen_write_alignmenttest(sctx); 1303 break; 1304 case INPUT_ESC_SCSG0_ON: 1305 ictx->cell.g0set = 1; 1306 break; 1307 case INPUT_ESC_SCSG0_OFF: 1308 ictx->cell.g0set = 0; 1309 break; 1310 case INPUT_ESC_SCSG1_ON: 1311 ictx->cell.g1set = 1; 1312 break; 1313 case INPUT_ESC_SCSG1_OFF: 1314 ictx->cell.g1set = 0; 1315 break; 1316 case INPUT_ESC_ST: 1317 /* ST terminates OSC but the state transition already did it. */ 1318 break; 1319 } 1320 1321 ictx->last = -1; 1322 return (0); 1323} 1324 1325/* Execute control sequence. */ 1326static int 1327input_csi_dispatch(struct input_ctx *ictx) 1328{ 1329 struct screen_write_ctx *sctx = &ictx->ctx; 1330 struct screen *s = sctx->s; 1331 struct input_table_entry *entry; 1332 int i, n, m; 1333 u_int cx, bg = ictx->cell.cell.bg; 1334 1335 if (ictx->flags & INPUT_DISCARD) 1336 return (0); 1337 1338 log_debug("%s: '%c' \"%s\" \"%s\"", 1339 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1340 1341 if (input_split(ictx) != 0) 1342 return (0); 1343 1344 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1345 sizeof input_csi_table[0], input_table_compare); 1346 if (entry == NULL) { 1347 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1348 return (0); 1349 } 1350 1351 switch (entry->type) { 1352 case INPUT_CSI_CBT: 1353 /* Find the previous tab point, n times. */ 1354 cx = s->cx; 1355 if (cx > screen_size_x(s) - 1) 1356 cx = screen_size_x(s) - 1; 1357 n = input_get(ictx, 0, 1, 1); 1358 if (n == -1) 1359 break; 1360 while (cx > 0 && n-- > 0) { 1361 do 1362 cx--; 1363 while (cx > 0 && !bit_test(s->tabs, cx)); 1364 } 1365 s->cx = cx; 1366 break; 1367 case INPUT_CSI_CUB: 1368 n = input_get(ictx, 0, 1, 1); 1369 if (n != -1) 1370 screen_write_cursorleft(sctx, n); 1371 break; 1372 case INPUT_CSI_CUD: 1373 n = input_get(ictx, 0, 1, 1); 1374 if (n != -1) 1375 screen_write_cursordown(sctx, n); 1376 break; 1377 case INPUT_CSI_CUF: 1378 n = input_get(ictx, 0, 1, 1); 1379 if (n != -1) 1380 screen_write_cursorright(sctx, n); 1381 break; 1382 case INPUT_CSI_CUP: 1383 n = input_get(ictx, 0, 1, 1); 1384 m = input_get(ictx, 1, 1, 1); 1385 if (n != -1 && m != -1) 1386 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1387 break; 1388 case INPUT_CSI_MODSET: 1389 n = input_get(ictx, 0, 0, 0); 1390 m = input_get(ictx, 1, 0, 0); 1391 if (n == 0 || (n == 4 && m == 0)) 1392 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1393 else if (n == 4 && (m == 1 || m == 2)) 1394 screen_write_mode_set(sctx, MODE_KEXTENDED); 1395 break; 1396 case INPUT_CSI_MODOFF: 1397 n = input_get(ictx, 0, 0, 0); 1398 if (n == 4) 1399 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1400 break; 1401 case INPUT_CSI_WINOPS: 1402 input_csi_dispatch_winops(ictx); 1403 break; 1404 case INPUT_CSI_CUU: 1405 n = input_get(ictx, 0, 1, 1); 1406 if (n != -1) 1407 screen_write_cursorup(sctx, n); 1408 break; 1409 case INPUT_CSI_CNL: 1410 n = input_get(ictx, 0, 1, 1); 1411 if (n != -1) { 1412 screen_write_carriagereturn(sctx); 1413 screen_write_cursordown(sctx, n); 1414 } 1415 break; 1416 case INPUT_CSI_CPL: 1417 n = input_get(ictx, 0, 1, 1); 1418 if (n != -1) { 1419 screen_write_carriagereturn(sctx); 1420 screen_write_cursorup(sctx, n); 1421 } 1422 break; 1423 case INPUT_CSI_DA: 1424 switch (input_get(ictx, 0, 0, 0)) { 1425 case -1: 1426 break; 1427 case 0: 1428 input_reply(ictx, "\033[?1;2c"); 1429 break; 1430 default: 1431 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1432 break; 1433 } 1434 break; 1435 case INPUT_CSI_DA_TWO: 1436 switch (input_get(ictx, 0, 0, 0)) { 1437 case -1: 1438 break; 1439 case 0: 1440 input_reply(ictx, "\033[>84;0;0c"); 1441 break; 1442 default: 1443 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1444 break; 1445 } 1446 break; 1447 case INPUT_CSI_ECH: 1448 n = input_get(ictx, 0, 1, 1); 1449 if (n != -1) 1450 screen_write_clearcharacter(sctx, n, bg); 1451 break; 1452 case INPUT_CSI_DCH: 1453 n = input_get(ictx, 0, 1, 1); 1454 if (n != -1) 1455 screen_write_deletecharacter(sctx, n, bg); 1456 break; 1457 case INPUT_CSI_DECSTBM: 1458 n = input_get(ictx, 0, 1, 1); 1459 m = input_get(ictx, 1, 1, screen_size_y(s)); 1460 if (n != -1 && m != -1) 1461 screen_write_scrollregion(sctx, n - 1, m - 1); 1462 break; 1463 case INPUT_CSI_DL: 1464 n = input_get(ictx, 0, 1, 1); 1465 if (n != -1) 1466 screen_write_deleteline(sctx, n, bg); 1467 break; 1468 case INPUT_CSI_DSR: 1469 switch (input_get(ictx, 0, 0, 0)) { 1470 case -1: 1471 break; 1472 case 5: 1473 input_reply(ictx, "\033[0n"); 1474 break; 1475 case 6: 1476 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1477 break; 1478 default: 1479 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1480 break; 1481 } 1482 break; 1483 case INPUT_CSI_ED: 1484 switch (input_get(ictx, 0, 0, 0)) { 1485 case -1: 1486 break; 1487 case 0: 1488 screen_write_clearendofscreen(sctx, bg); 1489 break; 1490 case 1: 1491 screen_write_clearstartofscreen(sctx, bg); 1492 break; 1493 case 2: 1494 screen_write_clearscreen(sctx, bg); 1495 break; 1496 case 3: 1497 if (input_get(ictx, 1, 0, 0) == 0) { 1498 /* 1499 * Linux console extension to clear history 1500 * (for example before locking the screen). 1501 */ 1502 screen_write_clearhistory(sctx); 1503 } 1504 break; 1505 default: 1506 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1507 break; 1508 } 1509 break; 1510 case INPUT_CSI_EL: 1511 switch (input_get(ictx, 0, 0, 0)) { 1512 case -1: 1513 break; 1514 case 0: 1515 screen_write_clearendofline(sctx, bg); 1516 break; 1517 case 1: 1518 screen_write_clearstartofline(sctx, bg); 1519 break; 1520 case 2: 1521 screen_write_clearline(sctx, bg); 1522 break; 1523 default: 1524 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1525 break; 1526 } 1527 break; 1528 case INPUT_CSI_HPA: 1529 n = input_get(ictx, 0, 1, 1); 1530 if (n != -1) 1531 screen_write_cursormove(sctx, n - 1, -1, 1); 1532 break; 1533 case INPUT_CSI_ICH: 1534 n = input_get(ictx, 0, 1, 1); 1535 if (n != -1) 1536 screen_write_insertcharacter(sctx, n, bg); 1537 break; 1538 case INPUT_CSI_IL: 1539 n = input_get(ictx, 0, 1, 1); 1540 if (n != -1) 1541 screen_write_insertline(sctx, n, bg); 1542 break; 1543 case INPUT_CSI_REP: 1544 n = input_get(ictx, 0, 1, 1); 1545 if (n == -1) 1546 break; 1547 1548 if (ictx->last == -1) 1549 break; 1550 ictx->ch = ictx->last; 1551 1552 for (i = 0; i < n; i++) 1553 input_print(ictx); 1554 break; 1555 case INPUT_CSI_RCP: 1556 input_restore_state(ictx); 1557 break; 1558 case INPUT_CSI_RM: 1559 input_csi_dispatch_rm(ictx); 1560 break; 1561 case INPUT_CSI_RM_PRIVATE: 1562 input_csi_dispatch_rm_private(ictx); 1563 break; 1564 case INPUT_CSI_SCP: 1565 input_save_state(ictx); 1566 break; 1567 case INPUT_CSI_SGR: 1568 input_csi_dispatch_sgr(ictx); 1569 break; 1570 case INPUT_CSI_SM: 1571 input_csi_dispatch_sm(ictx); 1572 break; 1573 case INPUT_CSI_SM_PRIVATE: 1574 input_csi_dispatch_sm_private(ictx); 1575 break; 1576 case INPUT_CSI_SU: 1577 n = input_get(ictx, 0, 1, 1); 1578 if (n != -1) 1579 screen_write_scrollup(sctx, n, bg); 1580 break; 1581 case INPUT_CSI_SD: 1582 n = input_get(ictx, 0, 1, 1); 1583 if (n != -1) 1584 screen_write_scrolldown(sctx, n, bg); 1585 break; 1586 case INPUT_CSI_TBC: 1587 switch (input_get(ictx, 0, 0, 0)) { 1588 case -1: 1589 break; 1590 case 0: 1591 if (s->cx < screen_size_x(s)) 1592 bit_clear(s->tabs, s->cx); 1593 break; 1594 case 3: 1595 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1596 break; 1597 default: 1598 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1599 break; 1600 } 1601 break; 1602 case INPUT_CSI_VPA: 1603 n = input_get(ictx, 0, 1, 1); 1604 if (n != -1) 1605 screen_write_cursormove(sctx, -1, n - 1, 1); 1606 break; 1607 case INPUT_CSI_DECSCUSR: 1608 n = input_get(ictx, 0, 0, 0); 1609 if (n != -1) 1610 screen_set_cursor_style(s, n); 1611 break; 1612 case INPUT_CSI_XDA: 1613 n = input_get(ictx, 0, 0, 0); 1614 if (n == 0) 1615 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1616 break; 1617 1618 } 1619 1620 ictx->last = -1; 1621 return (0); 1622} 1623 1624/* Handle CSI RM. */ 1625static void 1626input_csi_dispatch_rm(struct input_ctx *ictx) 1627{ 1628 struct screen_write_ctx *sctx = &ictx->ctx; 1629 u_int i; 1630 1631 for (i = 0; i < ictx->param_list_len; i++) { 1632 switch (input_get(ictx, i, 0, -1)) { 1633 case -1: 1634 break; 1635 case 4: /* IRM */ 1636 screen_write_mode_clear(sctx, MODE_INSERT); 1637 break; 1638 case 34: 1639 screen_write_mode_set(sctx, MODE_BLINKING); 1640 break; 1641 default: 1642 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1643 break; 1644 } 1645 } 1646} 1647 1648/* Handle CSI private RM. */ 1649static void 1650input_csi_dispatch_rm_private(struct input_ctx *ictx) 1651{ 1652 struct screen_write_ctx *sctx = &ictx->ctx; 1653 struct grid_cell *gc = &ictx->cell.cell; 1654 u_int i; 1655 1656 for (i = 0; i < ictx->param_list_len; i++) { 1657 switch (input_get(ictx, i, 0, -1)) { 1658 case -1: 1659 break; 1660 case 1: /* DECCKM */ 1661 screen_write_mode_clear(sctx, MODE_KCURSOR); 1662 break; 1663 case 3: /* DECCOLM */ 1664 screen_write_cursormove(sctx, 0, 0, 1); 1665 screen_write_clearscreen(sctx, gc->bg); 1666 break; 1667 case 6: /* DECOM */ 1668 screen_write_mode_clear(sctx, MODE_ORIGIN); 1669 screen_write_cursormove(sctx, 0, 0, 1); 1670 break; 1671 case 7: /* DECAWM */ 1672 screen_write_mode_clear(sctx, MODE_WRAP); 1673 break; 1674 case 12: 1675 screen_write_mode_clear(sctx, MODE_BLINKING); 1676 break; 1677 case 25: /* TCEM */ 1678 screen_write_mode_clear(sctx, MODE_CURSOR); 1679 break; 1680 case 1000: 1681 case 1001: 1682 case 1002: 1683 case 1003: 1684 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1685 break; 1686 case 1004: 1687 screen_write_mode_clear(sctx, MODE_FOCUSON); 1688 break; 1689 case 1005: 1690 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1691 break; 1692 case 1006: 1693 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1694 break; 1695 case 47: 1696 case 1047: 1697 screen_write_alternateoff(sctx, gc, 0); 1698 break; 1699 case 1049: 1700 screen_write_alternateoff(sctx, gc, 1); 1701 break; 1702 case 2004: 1703 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1704 break; 1705 default: 1706 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1707 break; 1708 } 1709 } 1710} 1711 1712/* Handle CSI SM. */ 1713static void 1714input_csi_dispatch_sm(struct input_ctx *ictx) 1715{ 1716 struct screen_write_ctx *sctx = &ictx->ctx; 1717 u_int i; 1718 1719 for (i = 0; i < ictx->param_list_len; i++) { 1720 switch (input_get(ictx, i, 0, -1)) { 1721 case -1: 1722 break; 1723 case 4: /* IRM */ 1724 screen_write_mode_set(sctx, MODE_INSERT); 1725 break; 1726 case 34: 1727 screen_write_mode_clear(sctx, MODE_BLINKING); 1728 break; 1729 default: 1730 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1731 break; 1732 } 1733 } 1734} 1735 1736/* Handle CSI private SM. */ 1737static void 1738input_csi_dispatch_sm_private(struct input_ctx *ictx) 1739{ 1740 struct screen_write_ctx *sctx = &ictx->ctx; 1741 struct window_pane *wp = ictx->wp; 1742 struct grid_cell *gc = &ictx->cell.cell; 1743 u_int i; 1744 1745 for (i = 0; i < ictx->param_list_len; i++) { 1746 switch (input_get(ictx, i, 0, -1)) { 1747 case -1: 1748 break; 1749 case 1: /* DECCKM */ 1750 screen_write_mode_set(sctx, MODE_KCURSOR); 1751 break; 1752 case 3: /* DECCOLM */ 1753 screen_write_cursormove(sctx, 0, 0, 1); 1754 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1755 break; 1756 case 6: /* DECOM */ 1757 screen_write_mode_set(sctx, MODE_ORIGIN); 1758 screen_write_cursormove(sctx, 0, 0, 1); 1759 break; 1760 case 7: /* DECAWM */ 1761 screen_write_mode_set(sctx, MODE_WRAP); 1762 break; 1763 case 12: 1764 screen_write_mode_set(sctx, MODE_BLINKING); 1765 break; 1766 case 25: /* TCEM */ 1767 screen_write_mode_set(sctx, MODE_CURSOR); 1768 break; 1769 case 1000: 1770 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1771 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1772 break; 1773 case 1002: 1774 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1775 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1776 break; 1777 case 1003: 1778 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1779 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1780 break; 1781 case 1004: 1782 if (sctx->s->mode & MODE_FOCUSON) 1783 break; 1784 screen_write_mode_set(sctx, MODE_FOCUSON); 1785 if (wp != NULL) 1786 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1787 break; 1788 case 1005: 1789 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1790 break; 1791 case 1006: 1792 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1793 break; 1794 case 47: 1795 case 1047: 1796 screen_write_alternateon(sctx, gc, 0); 1797 break; 1798 case 1049: 1799 screen_write_alternateon(sctx, gc, 1); 1800 break; 1801 case 2004: 1802 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1803 break; 1804 default: 1805 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1806 break; 1807 } 1808 } 1809} 1810 1811/* Handle CSI window operations. */ 1812static void 1813input_csi_dispatch_winops(struct input_ctx *ictx) 1814{ 1815 struct screen_write_ctx *sctx = &ictx->ctx; 1816 struct screen *s = sctx->s; 1817 struct window_pane *wp = ictx->wp; 1818 u_int x = screen_size_x(s), y = screen_size_y(s); 1819 int n, m; 1820 1821 m = 0; 1822 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1823 switch (n) { 1824 case 1: 1825 case 2: 1826 case 5: 1827 case 6: 1828 case 7: 1829 case 11: 1830 case 13: 1831 case 14: 1832 case 19: 1833 case 20: 1834 case 21: 1835 case 24: 1836 break; 1837 case 3: 1838 case 4: 1839 case 8: 1840 m++; 1841 if (input_get(ictx, m, 0, -1) == -1) 1842 return; 1843 /* FALLTHROUGH */ 1844 case 9: 1845 case 10: 1846 m++; 1847 if (input_get(ictx, m, 0, -1) == -1) 1848 return; 1849 break; 1850 case 22: 1851 m++; 1852 switch (input_get(ictx, m, 0, -1)) { 1853 case -1: 1854 return; 1855 case 0: 1856 case 2: 1857 screen_push_title(sctx->s); 1858 break; 1859 } 1860 break; 1861 case 23: 1862 m++; 1863 switch (input_get(ictx, m, 0, -1)) { 1864 case -1: 1865 return; 1866 case 0: 1867 case 2: 1868 screen_pop_title(sctx->s); 1869 if (wp != NULL) { 1870 server_redraw_window_borders(wp->window); 1871 server_status_window(wp->window); 1872 } 1873 break; 1874 } 1875 break; 1876 case 18: 1877 input_reply(ictx, "\033[8;%u;%ut", x, y); 1878 break; 1879 default: 1880 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1881 break; 1882 } 1883 m++; 1884 } 1885} 1886 1887/* Helper for 256 colour SGR. */ 1888static int 1889input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1890{ 1891 struct grid_cell *gc = &ictx->cell.cell; 1892 1893 if (c == -1 || c > 255) { 1894 if (fgbg == 38) 1895 gc->fg = 8; 1896 else if (fgbg == 48) 1897 gc->bg = 8; 1898 } else { 1899 if (fgbg == 38) 1900 gc->fg = c | COLOUR_FLAG_256; 1901 else if (fgbg == 48) 1902 gc->bg = c | COLOUR_FLAG_256; 1903 else if (fgbg == 58) 1904 gc->us = c | COLOUR_FLAG_256; 1905 } 1906 return (1); 1907} 1908 1909/* Handle CSI SGR for 256 colours. */ 1910static void 1911input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1912{ 1913 int c; 1914 1915 c = input_get(ictx, (*i) + 1, 0, -1); 1916 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1917 (*i)++; 1918} 1919 1920/* Helper for RGB colour SGR. */ 1921static int 1922input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1923 int b) 1924{ 1925 struct grid_cell *gc = &ictx->cell.cell; 1926 1927 if (r == -1 || r > 255) 1928 return (0); 1929 if (g == -1 || g > 255) 1930 return (0); 1931 if (b == -1 || b > 255) 1932 return (0); 1933 1934 if (fgbg == 38) 1935 gc->fg = colour_join_rgb(r, g, b); 1936 else if (fgbg == 48) 1937 gc->bg = colour_join_rgb(r, g, b); 1938 else if (fgbg == 58) 1939 gc->us = colour_join_rgb(r, g, b); 1940 return (1); 1941} 1942 1943/* Handle CSI SGR for RGB colours. */ 1944static void 1945input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1946{ 1947 int r, g, b; 1948 1949 r = input_get(ictx, (*i) + 1, 0, -1); 1950 g = input_get(ictx, (*i) + 2, 0, -1); 1951 b = input_get(ictx, (*i) + 3, 0, -1); 1952 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1953 (*i) += 3; 1954} 1955 1956/* Handle CSI SGR with a ISO parameter. */ 1957static void 1958input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1959{ 1960 struct grid_cell *gc = &ictx->cell.cell; 1961 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1962 int p[8]; 1963 u_int n; 1964 const char *errstr; 1965 1966 for (n = 0; n < nitems(p); n++) 1967 p[n] = -1; 1968 n = 0; 1969 1970 ptr = copy = xstrdup(s); 1971 while ((out = strsep(&ptr, ":")) != NULL) { 1972 if (*out != '\0') { 1973 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1974 if (errstr != NULL || n == nitems(p)) { 1975 free(copy); 1976 return; 1977 } 1978 } else 1979 n++; 1980 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1981 } 1982 free(copy); 1983 1984 if (n == 0) 1985 return; 1986 if (p[0] == 4) { 1987 if (n != 2) 1988 return; 1989 switch (p[1]) { 1990 case 0: 1991 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1992 break; 1993 case 1: 1994 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1995 gc->attr |= GRID_ATTR_UNDERSCORE; 1996 break; 1997 case 2: 1998 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1999 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2000 break; 2001 case 3: 2002 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2003 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2004 break; 2005 case 4: 2006 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2007 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2008 break; 2009 case 5: 2010 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2011 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2012 break; 2013 } 2014 return; 2015 } 2016 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2017 return; 2018 switch (p[1]) { 2019 case 2: 2020 if (n < 3) 2021 break; 2022 if (n == 5) 2023 i = 2; 2024 else 2025 i = 3; 2026 if (n < i + 3) 2027 break; 2028 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2029 p[i + 2]); 2030 break; 2031 case 5: 2032 if (n < 3) 2033 break; 2034 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2035 break; 2036 } 2037} 2038 2039/* Handle CSI SGR. */ 2040static void 2041input_csi_dispatch_sgr(struct input_ctx *ictx) 2042{ 2043 struct grid_cell *gc = &ictx->cell.cell; 2044 u_int i; 2045 int n; 2046 2047 if (ictx->param_list_len == 0) { 2048 memcpy(gc, &grid_default_cell, sizeof *gc); 2049 return; 2050 } 2051 2052 for (i = 0; i < ictx->param_list_len; i++) { 2053 if (ictx->param_list[i].type == INPUT_STRING) { 2054 input_csi_dispatch_sgr_colon(ictx, i); 2055 continue; 2056 } 2057 n = input_get(ictx, i, 0, 0); 2058 if (n == -1) 2059 continue; 2060 2061 if (n == 38 || n == 48 || n == 58) { 2062 i++; 2063 switch (input_get(ictx, i, 0, -1)) { 2064 case 2: 2065 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2066 break; 2067 case 5: 2068 input_csi_dispatch_sgr_256(ictx, n, &i); 2069 break; 2070 } 2071 continue; 2072 } 2073 2074 switch (n) { 2075 case 0: 2076 memcpy(gc, &grid_default_cell, sizeof *gc); 2077 break; 2078 case 1: 2079 gc->attr |= GRID_ATTR_BRIGHT; 2080 break; 2081 case 2: 2082 gc->attr |= GRID_ATTR_DIM; 2083 break; 2084 case 3: 2085 gc->attr |= GRID_ATTR_ITALICS; 2086 break; 2087 case 4: 2088 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2089 gc->attr |= GRID_ATTR_UNDERSCORE; 2090 break; 2091 case 5: 2092 gc->attr |= GRID_ATTR_BLINK; 2093 break; 2094 case 7: 2095 gc->attr |= GRID_ATTR_REVERSE; 2096 break; 2097 case 8: 2098 gc->attr |= GRID_ATTR_HIDDEN; 2099 break; 2100 case 9: 2101 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2102 break; 2103 case 22: 2104 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2105 break; 2106 case 23: 2107 gc->attr &= ~GRID_ATTR_ITALICS; 2108 break; 2109 case 24: 2110 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2111 break; 2112 case 25: 2113 gc->attr &= ~GRID_ATTR_BLINK; 2114 break; 2115 case 27: 2116 gc->attr &= ~GRID_ATTR_REVERSE; 2117 break; 2118 case 28: 2119 gc->attr &= ~GRID_ATTR_HIDDEN; 2120 break; 2121 case 29: 2122 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2123 break; 2124 case 30: 2125 case 31: 2126 case 32: 2127 case 33: 2128 case 34: 2129 case 35: 2130 case 36: 2131 case 37: 2132 gc->fg = n - 30; 2133 break; 2134 case 39: 2135 gc->fg = 8; 2136 break; 2137 case 40: 2138 case 41: 2139 case 42: 2140 case 43: 2141 case 44: 2142 case 45: 2143 case 46: 2144 case 47: 2145 gc->bg = n - 40; 2146 break; 2147 case 49: 2148 gc->bg = 8; 2149 break; 2150 case 53: 2151 gc->attr |= GRID_ATTR_OVERLINE; 2152 break; 2153 case 55: 2154 gc->attr &= ~GRID_ATTR_OVERLINE; 2155 break; 2156 case 59: 2157 gc->us = 0; 2158 break; 2159 case 90: 2160 case 91: 2161 case 92: 2162 case 93: 2163 case 94: 2164 case 95: 2165 case 96: 2166 case 97: 2167 gc->fg = n; 2168 break; 2169 case 100: 2170 case 101: 2171 case 102: 2172 case 103: 2173 case 104: 2174 case 105: 2175 case 106: 2176 case 107: 2177 gc->bg = n - 10; 2178 break; 2179 } 2180 } 2181} 2182 2183/* End of input with BEL. */ 2184static int 2185input_end_bel(struct input_ctx *ictx) 2186{ 2187 log_debug("%s", __func__); 2188 2189 ictx->input_end = INPUT_END_BEL; 2190 2191 return (0); 2192} 2193 2194/* DCS string started. */ 2195static void 2196input_enter_dcs(struct input_ctx *ictx) 2197{ 2198 log_debug("%s", __func__); 2199 2200 input_clear(ictx); 2201 input_start_timer(ictx); 2202 ictx->last = -1; 2203} 2204 2205/* DCS terminator (ST) received. */ 2206static int 2207input_dcs_dispatch(struct input_ctx *ictx) 2208{ 2209 struct screen_write_ctx *sctx = &ictx->ctx; 2210 u_char *buf = ictx->input_buf; 2211 size_t len = ictx->input_len; 2212 const char prefix[] = "tmux;"; 2213 const u_int prefixlen = (sizeof prefix) - 1; 2214 2215 if (ictx->flags & INPUT_DISCARD) 2216 return (0); 2217 2218 log_debug("%s: \"%s\"", __func__, buf); 2219 2220 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2221 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2222 2223 return (0); 2224} 2225 2226/* OSC string started. */ 2227static void 2228input_enter_osc(struct input_ctx *ictx) 2229{ 2230 log_debug("%s", __func__); 2231 2232 input_clear(ictx); 2233 input_start_timer(ictx); 2234 ictx->last = -1; 2235} 2236 2237/* OSC terminator (ST) received. */ 2238static void 2239input_exit_osc(struct input_ctx *ictx) 2240{ 2241 struct screen_write_ctx *sctx = &ictx->ctx; 2242 struct window_pane *wp = ictx->wp; 2243 u_char *p = ictx->input_buf; 2244 u_int option; 2245 2246 if (ictx->flags & INPUT_DISCARD) 2247 return; 2248 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2249 return; 2250 2251 log_debug("%s: \"%s\" (end %s)", __func__, p, 2252 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2253 2254 option = 0; 2255 while (*p >= '0' && *p <= '9') 2256 option = option * 10 + *p++ - '0'; 2257 if (*p == ';') 2258 p++; 2259 2260 switch (option) { 2261 case 0: 2262 case 2: 2263 if (screen_set_title(sctx->s, p) && wp != NULL) { 2264 server_redraw_window_borders(wp->window); 2265 server_status_window(wp->window); 2266 } 2267 break; 2268 case 4: 2269 input_osc_4(ictx, p); 2270 break; 2271 case 7: 2272 if (utf8_isvalid(p)) { 2273 screen_set_path(sctx->s, p); 2274 if (wp != NULL) { 2275 server_redraw_window_borders(wp->window); 2276 server_status_window(wp->window); 2277 } 2278 } 2279 break; 2280 case 10: 2281 input_osc_10(ictx, p); 2282 break; 2283 case 11: 2284 input_osc_11(ictx, p); 2285 break; 2286 case 12: 2287 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2288 screen_set_cursor_colour(sctx->s, p); 2289 break; 2290 case 52: 2291 input_osc_52(ictx, p); 2292 break; 2293 case 104: 2294 input_osc_104(ictx, p); 2295 break; 2296 case 112: 2297 if (*p == '\0') /* no arguments allowed */ 2298 screen_set_cursor_colour(sctx->s, ""); 2299 break; 2300 default: 2301 log_debug("%s: unknown '%u'", __func__, option); 2302 break; 2303 } 2304} 2305 2306/* APC string started. */ 2307static void 2308input_enter_apc(struct input_ctx *ictx) 2309{ 2310 log_debug("%s", __func__); 2311 2312 input_clear(ictx); 2313 input_start_timer(ictx); 2314 ictx->last = -1; 2315} 2316 2317/* APC terminator (ST) received. */ 2318static void 2319input_exit_apc(struct input_ctx *ictx) 2320{ 2321 struct screen_write_ctx *sctx = &ictx->ctx; 2322 struct window_pane *wp = ictx->wp; 2323 2324 if (ictx->flags & INPUT_DISCARD) 2325 return; 2326 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2327 2328 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2329 server_redraw_window_borders(wp->window); 2330 server_status_window(wp->window); 2331 } 2332} 2333 2334/* Rename string started. */ 2335static void 2336input_enter_rename(struct input_ctx *ictx) 2337{ 2338 log_debug("%s", __func__); 2339 2340 input_clear(ictx); 2341 input_start_timer(ictx); 2342 ictx->last = -1; 2343} 2344 2345/* Rename terminator (ST) received. */ 2346static void 2347input_exit_rename(struct input_ctx *ictx) 2348{ 2349 struct window_pane *wp = ictx->wp; 2350 struct options_entry *oe; 2351 2352 if (wp == NULL) 2353 return; 2354 if (ictx->flags & INPUT_DISCARD) 2355 return; 2356 if (!options_get_number(ictx->wp->options, "allow-rename")) 2357 return; 2358 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2359 2360 if (!utf8_isvalid(ictx->input_buf)) 2361 return; 2362 2363 if (ictx->input_len == 0) { 2364 oe = options_get_only(wp->window->options, "automatic-rename"); 2365 if (oe != NULL) 2366 options_remove(oe); 2367 return; 2368 } 2369 window_set_name(wp->window, ictx->input_buf); 2370 options_set_number(wp->window->options, "automatic-rename", 0); 2371 server_redraw_window_borders(wp->window); 2372 server_status_window(wp->window); 2373} 2374 2375/* Open UTF-8 character. */ 2376static int 2377input_top_bit_set(struct input_ctx *ictx) 2378{ 2379 struct screen_write_ctx *sctx = &ictx->ctx; 2380 struct utf8_data *ud = &ictx->utf8data; 2381 2382 ictx->last = -1; 2383 2384 if (!ictx->utf8started) { 2385 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2386 return (0); 2387 ictx->utf8started = 1; 2388 return (0); 2389 } 2390 2391 switch (utf8_append(ud, ictx->ch)) { 2392 case UTF8_MORE: 2393 return (0); 2394 case UTF8_ERROR: 2395 ictx->utf8started = 0; 2396 return (0); 2397 case UTF8_DONE: 2398 break; 2399 } 2400 ictx->utf8started = 0; 2401 2402 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2403 (int)ud->size, ud->data, ud->width); 2404 2405 utf8_copy(&ictx->cell.cell.data, ud); 2406 screen_write_collect_add(sctx, &ictx->cell.cell); 2407 2408 return (0); 2409} 2410 2411/* Parse colour from OSC. */ 2412static int 2413input_osc_parse_colour(const char *p, u_int *r, u_int *g, u_int *b) 2414{ 2415 u_int rsize, gsize, bsize; 2416 const char *cp, *s = p; 2417 2418 if (sscanf(p, "rgb:%x/%x/%x", r, g, b) != 3) 2419 return (0); 2420 p += 4; 2421 2422 cp = strchr(p, '/'); 2423 rsize = cp - p; 2424 if (rsize == 1) 2425 (*r) = (*r) | ((*r) << 4); 2426 else if (rsize == 3) 2427 (*r) >>= 4; 2428 else if (rsize == 4) 2429 (*r) >>= 8; 2430 else if (rsize != 2) 2431 return (0); 2432 2433 p = cp + 1; 2434 cp = strchr(p, '/'); 2435 gsize = cp - p; 2436 if (gsize == 1) 2437 (*g) = (*g) | ((*g) << 4); 2438 else if (gsize == 3) 2439 (*g) >>= 4; 2440 else if (gsize == 4) 2441 (*g) >>= 8; 2442 else if (gsize != 2) 2443 return (0); 2444 2445 bsize = strlen(cp + 1); 2446 if (bsize == 1) 2447 (*b) = (*b) | ((*b) << 4); 2448 else if (bsize == 3) 2449 (*b) >>= 4; 2450 else if (bsize == 4) 2451 (*b) >>= 8; 2452 else if (bsize != 2) 2453 return (0); 2454 2455 log_debug("%s: %s = %02x%02x%02x", __func__, s, *r, *g, *b); 2456 return (1); 2457} 2458 2459/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2460static void 2461input_osc_4(struct input_ctx *ictx, const char *p) 2462{ 2463 struct window_pane *wp = ictx->wp; 2464 char *copy, *s, *next = NULL; 2465 long idx; 2466 u_int r, g, b; 2467 2468 if (wp == NULL) 2469 return; 2470 2471 copy = s = xstrdup(p); 2472 while (s != NULL && *s != '\0') { 2473 idx = strtol(s, &next, 10); 2474 if (*next++ != ';') 2475 goto bad; 2476 if (idx < 0 || idx >= 0x100) 2477 goto bad; 2478 2479 s = strsep(&next, ";"); 2480 if (!input_osc_parse_colour(s, &r, &g, &b)) { 2481 s = next; 2482 continue; 2483 } 2484 2485 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2486 s = next; 2487 } 2488 2489 free(copy); 2490 return; 2491 2492bad: 2493 log_debug("bad OSC 4: %s", p); 2494 free(copy); 2495} 2496 2497/* Handle the OSC 10 sequence for setting foreground colour. */ 2498static void 2499input_osc_10(struct input_ctx *ictx, const char *p) 2500{ 2501 struct window_pane *wp = ictx->wp; 2502 u_int r, g, b; 2503 2504 if (wp == NULL) 2505 return; 2506 if (strcmp(p, "?") == 0) 2507 return; 2508 2509 if (!input_osc_parse_colour(p, &r, &g, &b)) 2510 goto bad; 2511 wp->fg = colour_join_rgb(r, g, b); 2512 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2513 2514 return; 2515 2516bad: 2517 log_debug("bad OSC 10: %s", p); 2518} 2519 2520/* Handle the OSC 11 sequence for setting background colour. */ 2521static void 2522input_osc_11(struct input_ctx *ictx, const char *p) 2523{ 2524 struct window_pane *wp = ictx->wp; 2525 u_int r, g, b; 2526 2527 if (wp == NULL) 2528 return; 2529 if (strcmp(p, "?") == 0) 2530 return; 2531 2532 if (!input_osc_parse_colour(p, &r, &g, &b)) 2533 goto bad; 2534 wp->bg = colour_join_rgb(r, g, b); 2535 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2536 2537 return; 2538 2539bad: 2540 log_debug("bad OSC 11: %s", p); 2541} 2542 2543/* Handle the OSC 52 sequence for setting the clipboard. */ 2544static void 2545input_osc_52(struct input_ctx *ictx, const char *p) 2546{ 2547 struct window_pane *wp = ictx->wp; 2548 char *end; 2549 const char *buf; 2550 size_t len; 2551 u_char *out; 2552 int outlen, state; 2553 struct screen_write_ctx ctx; 2554 struct paste_buffer *pb; 2555 2556 if (wp == NULL) 2557 return; 2558 state = options_get_number(global_options, "set-clipboard"); 2559 if (state != 2) 2560 return; 2561 2562 if ((end = strchr(p, ';')) == NULL) 2563 return; 2564 end++; 2565 if (*end == '\0') 2566 return; 2567 log_debug("%s: %s", __func__, end); 2568 2569 if (strcmp(end, "?") == 0) { 2570 if ((pb = paste_get_top(NULL)) != NULL) { 2571 buf = paste_buffer_data(pb, &len); 2572 outlen = 4 * ((len + 2) / 3) + 1; 2573 out = xmalloc(outlen); 2574 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2575 free(out); 2576 return; 2577 } 2578 } else { 2579 outlen = 0; 2580 out = NULL; 2581 } 2582 bufferevent_write(ictx->event, "\033]52;;", 6); 2583 if (outlen != 0) 2584 bufferevent_write(ictx->event, out, outlen); 2585 if (ictx->input_end == INPUT_END_BEL) 2586 bufferevent_write(ictx->event, "\007", 1); 2587 else 2588 bufferevent_write(ictx->event, "\033\\", 2); 2589 free(out); 2590 return; 2591 } 2592 2593 len = (strlen(end) / 4) * 3; 2594 if (len == 0) 2595 return; 2596 2597 out = xmalloc(len); 2598 if ((outlen = b64_pton(end, out, len)) == -1) { 2599 free(out); 2600 return; 2601 } 2602 2603 screen_write_start_pane(&ctx, wp, NULL); 2604 screen_write_setselection(&ctx, out, outlen); 2605 screen_write_stop(&ctx); 2606 notify_pane("pane-set-clipboard", wp); 2607 2608 paste_add(NULL, out, outlen); 2609} 2610 2611/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2612static void 2613input_osc_104(struct input_ctx *ictx, const char *p) 2614{ 2615 struct window_pane *wp = ictx->wp; 2616 char *copy, *s; 2617 long idx; 2618 2619 if (wp == NULL) 2620 return; 2621 2622 if (*p == '\0') { 2623 window_pane_reset_palette(wp); 2624 return; 2625 } 2626 2627 copy = s = xstrdup(p); 2628 while (*s != '\0') { 2629 idx = strtol(s, &s, 10); 2630 if (*s != '\0' && *s != ';') 2631 goto bad; 2632 if (idx < 0 || idx >= 0x100) 2633 goto bad; 2634 2635 window_pane_unset_palette(wp, idx); 2636 if (*s == ';') 2637 s++; 2638 } 2639 free(copy); 2640 return; 2641 2642bad: 2643 log_debug("bad OSC 104: %s", p); 2644 free(copy); 2645} 2646