1 /* $OpenBSD: input.c,v 1.193 2021/10/05 12:46:02 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. */ 55 struct 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. */ 63 struct 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. */ 76 struct input_ctx { 77 struct window_pane *wp; 78 struct bufferevent *event; 79 struct screen_write_ctx ctx; 80 struct colour_palette *palette; 81 82 struct input_cell cell; 83 84 struct input_cell old_cell; 85 u_int old_cx; 86 u_int old_cy; 87 int old_mode; 88 89 u_char interm_buf[4]; 90 size_t interm_len; 91 92 u_char param_buf[64]; 93 size_t param_len; 94 95 #define INPUT_BUF_START 32 96 #define INPUT_BUF_LIMIT 1048576 97 u_char *input_buf; 98 size_t input_len; 99 size_t input_space; 100 enum { 101 INPUT_END_ST, 102 INPUT_END_BEL 103 } input_end; 104 105 struct input_param param_list[24]; 106 u_int param_list_len; 107 108 struct utf8_data utf8data; 109 int utf8started; 110 111 int ch; 112 int last; 113 114 int flags; 115 #define INPUT_DISCARD 0x1 116 117 const struct input_state *state; 118 119 struct event timer; 120 121 /* 122 * All input received since we were last in the ground state. Sent to 123 * control clients on connection. 124 */ 125 struct evbuffer *since_ground; 126 }; 127 128 /* Helper functions. */ 129 struct input_transition; 130 static int input_split(struct input_ctx *); 131 static int input_get(struct input_ctx *, u_int, int, int); 132 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 133 static void input_set_state(struct input_ctx *, 134 const struct input_transition *); 135 static void input_reset_cell(struct input_ctx *); 136 137 static void input_osc_4(struct input_ctx *, const char *); 138 static void input_osc_10(struct input_ctx *, const char *); 139 static void input_osc_11(struct input_ctx *, const char *); 140 static void input_osc_52(struct input_ctx *, const char *); 141 static void input_osc_104(struct input_ctx *, const char *); 142 static void input_osc_110(struct input_ctx *, const char *); 143 static void input_osc_111(struct input_ctx *, const char *); 144 145 /* Transition entry/exit handlers. */ 146 static void input_clear(struct input_ctx *); 147 static void input_ground(struct input_ctx *); 148 static void input_enter_dcs(struct input_ctx *); 149 static void input_enter_osc(struct input_ctx *); 150 static void input_exit_osc(struct input_ctx *); 151 static void input_enter_apc(struct input_ctx *); 152 static void input_exit_apc(struct input_ctx *); 153 static void input_enter_rename(struct input_ctx *); 154 static void input_exit_rename(struct input_ctx *); 155 156 /* Input state handlers. */ 157 static int input_print(struct input_ctx *); 158 static int input_intermediate(struct input_ctx *); 159 static int input_parameter(struct input_ctx *); 160 static int input_input(struct input_ctx *); 161 static int input_c0_dispatch(struct input_ctx *); 162 static int input_esc_dispatch(struct input_ctx *); 163 static int input_csi_dispatch(struct input_ctx *); 164 static void input_csi_dispatch_rm(struct input_ctx *); 165 static void input_csi_dispatch_rm_private(struct input_ctx *); 166 static void input_csi_dispatch_sm(struct input_ctx *); 167 static void input_csi_dispatch_sm_private(struct input_ctx *); 168 static void input_csi_dispatch_winops(struct input_ctx *); 169 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 170 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 171 static void input_csi_dispatch_sgr(struct input_ctx *); 172 static int input_dcs_dispatch(struct input_ctx *); 173 static int input_top_bit_set(struct input_ctx *); 174 static int input_end_bel(struct input_ctx *); 175 176 /* Command table comparison function. */ 177 static int input_table_compare(const void *, const void *); 178 179 /* Command table entry. */ 180 struct input_table_entry { 181 int ch; 182 const char *interm; 183 int type; 184 }; 185 186 /* Escape commands. */ 187 enum input_esc_type { 188 INPUT_ESC_DECALN, 189 INPUT_ESC_DECKPAM, 190 INPUT_ESC_DECKPNM, 191 INPUT_ESC_DECRC, 192 INPUT_ESC_DECSC, 193 INPUT_ESC_HTS, 194 INPUT_ESC_IND, 195 INPUT_ESC_NEL, 196 INPUT_ESC_RI, 197 INPUT_ESC_RIS, 198 INPUT_ESC_SCSG0_OFF, 199 INPUT_ESC_SCSG0_ON, 200 INPUT_ESC_SCSG1_OFF, 201 INPUT_ESC_SCSG1_ON, 202 INPUT_ESC_ST, 203 }; 204 205 /* Escape command table. */ 206 static const struct input_table_entry input_esc_table[] = { 207 { '0', "(", INPUT_ESC_SCSG0_ON }, 208 { '0', ")", INPUT_ESC_SCSG1_ON }, 209 { '7', "", INPUT_ESC_DECSC }, 210 { '8', "", INPUT_ESC_DECRC }, 211 { '8', "#", INPUT_ESC_DECALN }, 212 { '=', "", INPUT_ESC_DECKPAM }, 213 { '>', "", INPUT_ESC_DECKPNM }, 214 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 215 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 216 { 'D', "", INPUT_ESC_IND }, 217 { 'E', "", INPUT_ESC_NEL }, 218 { 'H', "", INPUT_ESC_HTS }, 219 { 'M', "", INPUT_ESC_RI }, 220 { '\\', "", INPUT_ESC_ST }, 221 { 'c', "", INPUT_ESC_RIS }, 222 }; 223 224 /* Control (CSI) commands. */ 225 enum input_csi_type { 226 INPUT_CSI_CBT, 227 INPUT_CSI_CNL, 228 INPUT_CSI_CPL, 229 INPUT_CSI_CUB, 230 INPUT_CSI_CUD, 231 INPUT_CSI_CUF, 232 INPUT_CSI_CUP, 233 INPUT_CSI_CUU, 234 INPUT_CSI_DA, 235 INPUT_CSI_DA_TWO, 236 INPUT_CSI_DCH, 237 INPUT_CSI_DECSCUSR, 238 INPUT_CSI_DECSTBM, 239 INPUT_CSI_DL, 240 INPUT_CSI_DSR, 241 INPUT_CSI_ECH, 242 INPUT_CSI_ED, 243 INPUT_CSI_EL, 244 INPUT_CSI_HPA, 245 INPUT_CSI_ICH, 246 INPUT_CSI_IL, 247 INPUT_CSI_MODOFF, 248 INPUT_CSI_MODSET, 249 INPUT_CSI_RCP, 250 INPUT_CSI_REP, 251 INPUT_CSI_RM, 252 INPUT_CSI_RM_PRIVATE, 253 INPUT_CSI_SCP, 254 INPUT_CSI_SD, 255 INPUT_CSI_SGR, 256 INPUT_CSI_SM, 257 INPUT_CSI_SM_PRIVATE, 258 INPUT_CSI_SU, 259 INPUT_CSI_TBC, 260 INPUT_CSI_VPA, 261 INPUT_CSI_WINOPS, 262 INPUT_CSI_XDA, 263 }; 264 265 /* Control (CSI) command table. */ 266 static const struct input_table_entry input_csi_table[] = { 267 { '@', "", INPUT_CSI_ICH }, 268 { 'A', "", INPUT_CSI_CUU }, 269 { 'B', "", INPUT_CSI_CUD }, 270 { 'C', "", INPUT_CSI_CUF }, 271 { 'D', "", INPUT_CSI_CUB }, 272 { 'E', "", INPUT_CSI_CNL }, 273 { 'F', "", INPUT_CSI_CPL }, 274 { 'G', "", INPUT_CSI_HPA }, 275 { 'H', "", INPUT_CSI_CUP }, 276 { 'J', "", INPUT_CSI_ED }, 277 { 'K', "", INPUT_CSI_EL }, 278 { 'L', "", INPUT_CSI_IL }, 279 { 'M', "", INPUT_CSI_DL }, 280 { 'P', "", INPUT_CSI_DCH }, 281 { 'S', "", INPUT_CSI_SU }, 282 { 'T', "", INPUT_CSI_SD }, 283 { 'X', "", INPUT_CSI_ECH }, 284 { 'Z', "", INPUT_CSI_CBT }, 285 { '`', "", INPUT_CSI_HPA }, 286 { 'b', "", INPUT_CSI_REP }, 287 { 'c', "", INPUT_CSI_DA }, 288 { 'c', ">", INPUT_CSI_DA_TWO }, 289 { 'd', "", INPUT_CSI_VPA }, 290 { 'f', "", INPUT_CSI_CUP }, 291 { 'g', "", INPUT_CSI_TBC }, 292 { 'h', "", INPUT_CSI_SM }, 293 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 294 { 'l', "", INPUT_CSI_RM }, 295 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 296 { 'm', "", INPUT_CSI_SGR }, 297 { 'm', ">", INPUT_CSI_MODSET }, 298 { 'n', "", INPUT_CSI_DSR }, 299 { 'n', ">", INPUT_CSI_MODOFF }, 300 { 'q', " ", INPUT_CSI_DECSCUSR }, 301 { 'q', ">", INPUT_CSI_XDA }, 302 { 'r', "", INPUT_CSI_DECSTBM }, 303 { 's', "", INPUT_CSI_SCP }, 304 { 't', "", INPUT_CSI_WINOPS }, 305 { 'u', "", INPUT_CSI_RCP }, 306 }; 307 308 /* Input transition. */ 309 struct input_transition { 310 int first; 311 int last; 312 313 int (*handler)(struct input_ctx *); 314 const struct input_state *state; 315 }; 316 317 /* Input state. */ 318 struct input_state { 319 const char *name; 320 void (*enter)(struct input_ctx *); 321 void (*exit)(struct input_ctx *); 322 const struct input_transition *transitions; 323 }; 324 325 /* State transitions available from all states. */ 326 #define INPUT_STATE_ANYWHERE \ 327 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 328 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 329 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 330 331 /* Forward declarations of state tables. */ 332 static const struct input_transition input_state_ground_table[]; 333 static const struct input_transition input_state_esc_enter_table[]; 334 static const struct input_transition input_state_esc_intermediate_table[]; 335 static const struct input_transition input_state_csi_enter_table[]; 336 static const struct input_transition input_state_csi_parameter_table[]; 337 static const struct input_transition input_state_csi_intermediate_table[]; 338 static const struct input_transition input_state_csi_ignore_table[]; 339 static const struct input_transition input_state_dcs_enter_table[]; 340 static const struct input_transition input_state_dcs_parameter_table[]; 341 static const struct input_transition input_state_dcs_intermediate_table[]; 342 static const struct input_transition input_state_dcs_handler_table[]; 343 static const struct input_transition input_state_dcs_escape_table[]; 344 static const struct input_transition input_state_dcs_ignore_table[]; 345 static const struct input_transition input_state_osc_string_table[]; 346 static const struct input_transition input_state_apc_string_table[]; 347 static const struct input_transition input_state_rename_string_table[]; 348 static const struct input_transition input_state_consume_st_table[]; 349 350 /* ground state definition. */ 351 static const struct input_state input_state_ground = { 352 "ground", 353 input_ground, NULL, 354 input_state_ground_table 355 }; 356 357 /* esc_enter state definition. */ 358 static const struct input_state input_state_esc_enter = { 359 "esc_enter", 360 input_clear, NULL, 361 input_state_esc_enter_table 362 }; 363 364 /* esc_intermediate state definition. */ 365 static const struct input_state input_state_esc_intermediate = { 366 "esc_intermediate", 367 NULL, NULL, 368 input_state_esc_intermediate_table 369 }; 370 371 /* csi_enter state definition. */ 372 static const struct input_state input_state_csi_enter = { 373 "csi_enter", 374 input_clear, NULL, 375 input_state_csi_enter_table 376 }; 377 378 /* csi_parameter state definition. */ 379 static const struct input_state input_state_csi_parameter = { 380 "csi_parameter", 381 NULL, NULL, 382 input_state_csi_parameter_table 383 }; 384 385 /* csi_intermediate state definition. */ 386 static const struct input_state input_state_csi_intermediate = { 387 "csi_intermediate", 388 NULL, NULL, 389 input_state_csi_intermediate_table 390 }; 391 392 /* csi_ignore state definition. */ 393 static const struct input_state input_state_csi_ignore = { 394 "csi_ignore", 395 NULL, NULL, 396 input_state_csi_ignore_table 397 }; 398 399 /* dcs_enter state definition. */ 400 static const struct input_state input_state_dcs_enter = { 401 "dcs_enter", 402 input_enter_dcs, NULL, 403 input_state_dcs_enter_table 404 }; 405 406 /* dcs_parameter state definition. */ 407 static const struct input_state input_state_dcs_parameter = { 408 "dcs_parameter", 409 NULL, NULL, 410 input_state_dcs_parameter_table 411 }; 412 413 /* dcs_intermediate state definition. */ 414 static const struct input_state input_state_dcs_intermediate = { 415 "dcs_intermediate", 416 NULL, NULL, 417 input_state_dcs_intermediate_table 418 }; 419 420 /* dcs_handler state definition. */ 421 static const struct input_state input_state_dcs_handler = { 422 "dcs_handler", 423 NULL, NULL, 424 input_state_dcs_handler_table 425 }; 426 427 /* dcs_escape state definition. */ 428 static const struct input_state input_state_dcs_escape = { 429 "dcs_escape", 430 NULL, NULL, 431 input_state_dcs_escape_table 432 }; 433 434 /* dcs_ignore state definition. */ 435 static const struct input_state input_state_dcs_ignore = { 436 "dcs_ignore", 437 NULL, NULL, 438 input_state_dcs_ignore_table 439 }; 440 441 /* osc_string state definition. */ 442 static const struct input_state input_state_osc_string = { 443 "osc_string", 444 input_enter_osc, input_exit_osc, 445 input_state_osc_string_table 446 }; 447 448 /* apc_string state definition. */ 449 static const struct input_state input_state_apc_string = { 450 "apc_string", 451 input_enter_apc, input_exit_apc, 452 input_state_apc_string_table 453 }; 454 455 /* rename_string state definition. */ 456 static const struct input_state input_state_rename_string = { 457 "rename_string", 458 input_enter_rename, input_exit_rename, 459 input_state_rename_string_table 460 }; 461 462 /* consume_st state definition. */ 463 static const struct input_state input_state_consume_st = { 464 "consume_st", 465 input_enter_rename, NULL, /* rename also waits for ST */ 466 input_state_consume_st_table 467 }; 468 469 /* ground state table. */ 470 static const struct input_transition input_state_ground_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, 0x7e, input_print, NULL }, 477 { 0x7f, 0x7f, NULL, NULL }, 478 { 0x80, 0xff, input_top_bit_set, NULL }, 479 480 { -1, -1, NULL, NULL } 481 }; 482 483 /* esc_enter state table. */ 484 static const struct input_transition input_state_esc_enter_table[] = { 485 INPUT_STATE_ANYWHERE, 486 487 { 0x00, 0x17, input_c0_dispatch, NULL }, 488 { 0x19, 0x19, input_c0_dispatch, NULL }, 489 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 490 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 491 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 492 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 493 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 494 { 0x58, 0x58, NULL, &input_state_consume_st }, 495 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 496 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 497 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 498 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 499 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 500 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 501 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 502 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 503 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 504 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 505 { 0x7f, 0xff, NULL, NULL }, 506 507 { -1, -1, NULL, NULL } 508 }; 509 510 /* esc_intermediate state table. */ 511 static const struct input_transition input_state_esc_intermediate_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, NULL }, 518 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 519 { 0x7f, 0xff, NULL, NULL }, 520 521 { -1, -1, NULL, NULL } 522 }; 523 524 /* csi_enter state table. */ 525 static const struct input_transition input_state_csi_enter_table[] = { 526 INPUT_STATE_ANYWHERE, 527 528 { 0x00, 0x17, input_c0_dispatch, NULL }, 529 { 0x19, 0x19, input_c0_dispatch, NULL }, 530 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 531 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 532 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 533 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 534 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 535 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 536 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 537 { 0x7f, 0xff, NULL, NULL }, 538 539 { -1, -1, NULL, NULL } 540 }; 541 542 /* csi_parameter state table. */ 543 static const struct input_transition input_state_csi_parameter_table[] = { 544 INPUT_STATE_ANYWHERE, 545 546 { 0x00, 0x17, input_c0_dispatch, NULL }, 547 { 0x19, 0x19, input_c0_dispatch, NULL }, 548 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 549 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 550 { 0x30, 0x39, input_parameter, NULL }, 551 { 0x3a, 0x3a, input_parameter, NULL }, 552 { 0x3b, 0x3b, input_parameter, NULL }, 553 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 554 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 555 { 0x7f, 0xff, NULL, NULL }, 556 557 { -1, -1, NULL, NULL } 558 }; 559 560 /* csi_intermediate state table. */ 561 static const struct input_transition input_state_csi_intermediate_table[] = { 562 INPUT_STATE_ANYWHERE, 563 564 { 0x00, 0x17, input_c0_dispatch, NULL }, 565 { 0x19, 0x19, input_c0_dispatch, NULL }, 566 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 567 { 0x20, 0x2f, input_intermediate, NULL }, 568 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 569 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 570 { 0x7f, 0xff, NULL, NULL }, 571 572 { -1, -1, NULL, NULL } 573 }; 574 575 /* csi_ignore state table. */ 576 static const struct input_transition input_state_csi_ignore_table[] = { 577 INPUT_STATE_ANYWHERE, 578 579 { 0x00, 0x17, input_c0_dispatch, NULL }, 580 { 0x19, 0x19, input_c0_dispatch, NULL }, 581 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 582 { 0x20, 0x3f, NULL, NULL }, 583 { 0x40, 0x7e, NULL, &input_state_ground }, 584 { 0x7f, 0xff, NULL, NULL }, 585 586 { -1, -1, NULL, NULL } 587 }; 588 589 /* dcs_enter state table. */ 590 static const struct input_transition input_state_dcs_enter_table[] = { 591 INPUT_STATE_ANYWHERE, 592 593 { 0x00, 0x17, NULL, NULL }, 594 { 0x19, 0x19, NULL, NULL }, 595 { 0x1c, 0x1f, NULL, NULL }, 596 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 597 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 598 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 599 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 600 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 601 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 602 { 0x7f, 0xff, NULL, NULL }, 603 604 { -1, -1, NULL, NULL } 605 }; 606 607 /* dcs_parameter state table. */ 608 static const struct input_transition input_state_dcs_parameter_table[] = { 609 INPUT_STATE_ANYWHERE, 610 611 { 0x00, 0x17, NULL, NULL }, 612 { 0x19, 0x19, NULL, NULL }, 613 { 0x1c, 0x1f, NULL, NULL }, 614 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 615 { 0x30, 0x39, input_parameter, NULL }, 616 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 617 { 0x3b, 0x3b, input_parameter, NULL }, 618 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 619 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 620 { 0x7f, 0xff, NULL, NULL }, 621 622 { -1, -1, NULL, NULL } 623 }; 624 625 /* dcs_intermediate state table. */ 626 static const struct input_transition input_state_dcs_intermediate_table[] = { 627 INPUT_STATE_ANYWHERE, 628 629 { 0x00, 0x17, NULL, NULL }, 630 { 0x19, 0x19, NULL, NULL }, 631 { 0x1c, 0x1f, NULL, NULL }, 632 { 0x20, 0x2f, input_intermediate, NULL }, 633 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 634 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 635 { 0x7f, 0xff, NULL, NULL }, 636 637 { -1, -1, NULL, NULL } 638 }; 639 640 /* dcs_handler state table. */ 641 static const struct input_transition input_state_dcs_handler_table[] = { 642 /* No INPUT_STATE_ANYWHERE */ 643 644 { 0x00, 0x1a, input_input, NULL }, 645 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 646 { 0x1c, 0xff, input_input, NULL }, 647 648 { -1, -1, NULL, NULL } 649 }; 650 651 /* dcs_escape state table. */ 652 static const struct input_transition input_state_dcs_escape_table[] = { 653 /* No INPUT_STATE_ANYWHERE */ 654 655 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 656 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 657 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 658 659 { -1, -1, NULL, NULL } 660 }; 661 662 /* dcs_ignore state table. */ 663 static const struct input_transition input_state_dcs_ignore_table[] = { 664 INPUT_STATE_ANYWHERE, 665 666 { 0x00, 0x17, NULL, NULL }, 667 { 0x19, 0x19, NULL, NULL }, 668 { 0x1c, 0x1f, NULL, NULL }, 669 { 0x20, 0xff, NULL, NULL }, 670 671 { -1, -1, NULL, NULL } 672 }; 673 674 /* osc_string state table. */ 675 static const struct input_transition input_state_osc_string_table[] = { 676 INPUT_STATE_ANYWHERE, 677 678 { 0x00, 0x06, NULL, NULL }, 679 { 0x07, 0x07, input_end_bel, &input_state_ground }, 680 { 0x08, 0x17, NULL, NULL }, 681 { 0x19, 0x19, NULL, NULL }, 682 { 0x1c, 0x1f, NULL, NULL }, 683 { 0x20, 0xff, input_input, NULL }, 684 685 { -1, -1, NULL, NULL } 686 }; 687 688 /* apc_string state table. */ 689 static const struct input_transition input_state_apc_string_table[] = { 690 INPUT_STATE_ANYWHERE, 691 692 { 0x00, 0x17, NULL, NULL }, 693 { 0x19, 0x19, NULL, NULL }, 694 { 0x1c, 0x1f, NULL, NULL }, 695 { 0x20, 0xff, input_input, NULL }, 696 697 { -1, -1, NULL, NULL } 698 }; 699 700 /* rename_string state table. */ 701 static const struct input_transition input_state_rename_string_table[] = { 702 INPUT_STATE_ANYWHERE, 703 704 { 0x00, 0x17, NULL, NULL }, 705 { 0x19, 0x19, NULL, NULL }, 706 { 0x1c, 0x1f, NULL, NULL }, 707 { 0x20, 0xff, input_input, NULL }, 708 709 { -1, -1, NULL, NULL } 710 }; 711 712 /* consume_st state table. */ 713 static const struct input_transition input_state_consume_st_table[] = { 714 INPUT_STATE_ANYWHERE, 715 716 { 0x00, 0x17, NULL, NULL }, 717 { 0x19, 0x19, NULL, NULL }, 718 { 0x1c, 0x1f, NULL, NULL }, 719 { 0x20, 0xff, NULL, NULL }, 720 721 { -1, -1, NULL, NULL } 722 }; 723 724 /* Input table compare. */ 725 static int 726 input_table_compare(const void *key, const void *value) 727 { 728 const struct input_ctx *ictx = key; 729 const struct input_table_entry *entry = value; 730 731 if (ictx->ch != entry->ch) 732 return (ictx->ch - entry->ch); 733 return (strcmp(ictx->interm_buf, entry->interm)); 734 } 735 736 /* 737 * Timer - if this expires then have been waiting for a terminator for too 738 * long, so reset to ground. 739 */ 740 static void 741 input_timer_callback(__unused int fd, __unused short events, void *arg) 742 { 743 struct input_ctx *ictx = arg; 744 745 log_debug("%s: %s expired" , __func__, ictx->state->name); 746 input_reset(ictx, 0); 747 } 748 749 /* Start the timer. */ 750 static void 751 input_start_timer(struct input_ctx *ictx) 752 { 753 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 754 755 event_del(&ictx->timer); 756 event_add(&ictx->timer, &tv); 757 } 758 759 /* Reset cell state to default. */ 760 static void 761 input_reset_cell(struct input_ctx *ictx) 762 { 763 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 764 ictx->cell.set = 0; 765 ictx->cell.g0set = ictx->cell.g1set = 0; 766 767 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 768 ictx->old_cx = 0; 769 ictx->old_cy = 0; 770 } 771 772 /* Save screen state. */ 773 static void 774 input_save_state(struct input_ctx *ictx) 775 { 776 struct screen_write_ctx *sctx = &ictx->ctx; 777 struct screen *s = sctx->s; 778 779 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 780 ictx->old_cx = s->cx; 781 ictx->old_cy = s->cy; 782 ictx->old_mode = s->mode; 783 } 784 785 /* Restore screen state. */ 786 static void 787 input_restore_state(struct input_ctx *ictx) 788 { 789 struct screen_write_ctx *sctx = &ictx->ctx; 790 791 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 792 if (ictx->old_mode & MODE_ORIGIN) 793 screen_write_mode_set(sctx, MODE_ORIGIN); 794 else 795 screen_write_mode_clear(sctx, MODE_ORIGIN); 796 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 797 } 798 799 /* Initialise input parser. */ 800 struct input_ctx * 801 input_init(struct window_pane *wp, struct bufferevent *bev, 802 struct colour_palette *palette) 803 { 804 struct input_ctx *ictx; 805 806 ictx = xcalloc(1, sizeof *ictx); 807 ictx->wp = wp; 808 ictx->event = bev; 809 ictx->palette = palette; 810 811 ictx->input_space = INPUT_BUF_START; 812 ictx->input_buf = xmalloc(INPUT_BUF_START); 813 814 ictx->since_ground = evbuffer_new(); 815 if (ictx->since_ground == NULL) 816 fatalx("out of memory"); 817 818 evtimer_set(&ictx->timer, input_timer_callback, ictx); 819 820 input_reset(ictx, 0); 821 return (ictx); 822 } 823 824 /* Destroy input parser. */ 825 void 826 input_free(struct input_ctx *ictx) 827 { 828 u_int i; 829 830 for (i = 0; i < ictx->param_list_len; i++) { 831 if (ictx->param_list[i].type == INPUT_STRING) 832 free(ictx->param_list[i].str); 833 } 834 835 event_del(&ictx->timer); 836 837 free(ictx->input_buf); 838 evbuffer_free(ictx->since_ground); 839 840 free(ictx); 841 } 842 843 /* Reset input state and clear screen. */ 844 void 845 input_reset(struct input_ctx *ictx, int clear) 846 { 847 struct screen_write_ctx *sctx = &ictx->ctx; 848 struct window_pane *wp = ictx->wp; 849 850 input_reset_cell(ictx); 851 852 if (clear && wp != NULL) { 853 if (TAILQ_EMPTY(&wp->modes)) 854 screen_write_start_pane(sctx, wp, &wp->base); 855 else 856 screen_write_start(sctx, &wp->base); 857 screen_write_reset(sctx); 858 screen_write_stop(sctx); 859 } 860 861 input_clear(ictx); 862 863 ictx->last = -1; 864 865 ictx->state = &input_state_ground; 866 ictx->flags = 0; 867 } 868 869 /* Return pending data. */ 870 struct evbuffer * 871 input_pending(struct input_ctx *ictx) 872 { 873 return (ictx->since_ground); 874 } 875 876 /* Change input state. */ 877 static void 878 input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 879 { 880 if (ictx->state->exit != NULL) 881 ictx->state->exit(ictx); 882 ictx->state = itr->state; 883 if (ictx->state->enter != NULL) 884 ictx->state->enter(ictx); 885 } 886 887 /* Parse data. */ 888 static void 889 input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 890 { 891 struct screen_write_ctx *sctx = &ictx->ctx; 892 const struct input_state *state = NULL; 893 const struct input_transition *itr = NULL; 894 size_t off = 0; 895 896 /* Parse the input. */ 897 while (off < len) { 898 ictx->ch = buf[off++]; 899 900 /* Find the transition. */ 901 if (ictx->state != state || 902 itr == NULL || 903 ictx->ch < itr->first || 904 ictx->ch > itr->last) { 905 itr = ictx->state->transitions; 906 while (itr->first != -1 && itr->last != -1) { 907 if (ictx->ch >= itr->first && 908 ictx->ch <= itr->last) 909 break; 910 itr++; 911 } 912 if (itr->first == -1 || itr->last == -1) { 913 /* No transition? Eh? */ 914 fatalx("no transition from state"); 915 } 916 } 917 state = ictx->state; 918 919 /* 920 * Any state except print stops the current collection. This is 921 * an optimization to avoid checking if the attributes have 922 * changed for every character. It will stop unnecessarily for 923 * sequences that don't make a terminal change, but they should 924 * be the minority. 925 */ 926 if (itr->handler != input_print) 927 screen_write_collect_end(sctx); 928 929 /* 930 * Execute the handler, if any. Don't switch state if it 931 * returns non-zero. 932 */ 933 if (itr->handler != NULL && itr->handler(ictx) != 0) 934 continue; 935 936 /* And switch state, if necessary. */ 937 if (itr->state != NULL) 938 input_set_state(ictx, itr); 939 940 /* If not in ground state, save input. */ 941 if (ictx->state != &input_state_ground) 942 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 943 } 944 } 945 946 /* Parse input from pane. */ 947 void 948 input_parse_pane(struct window_pane *wp) 949 { 950 void *new_data; 951 size_t new_size; 952 953 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 954 input_parse_buffer(wp, new_data, new_size); 955 window_pane_update_used_data(wp, &wp->offset, new_size); 956 } 957 958 /* Parse given input. */ 959 void 960 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 961 { 962 struct input_ctx *ictx = wp->ictx; 963 struct screen_write_ctx *sctx = &ictx->ctx; 964 965 if (len == 0) 966 return; 967 968 window_update_activity(wp->window); 969 wp->flags |= PANE_CHANGED; 970 971 /* NULL wp if there is a mode set as don't want to update the tty. */ 972 if (TAILQ_EMPTY(&wp->modes)) 973 screen_write_start_pane(sctx, wp, &wp->base); 974 else 975 screen_write_start(sctx, &wp->base); 976 977 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 978 ictx->state->name, len, (int)len, buf); 979 980 input_parse(ictx, buf, len); 981 screen_write_stop(sctx); 982 } 983 984 /* Parse given input for screen. */ 985 void 986 input_parse_screen(struct input_ctx *ictx, struct screen *s, 987 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 988 { 989 struct screen_write_ctx *sctx = &ictx->ctx; 990 991 if (len == 0) 992 return; 993 994 screen_write_start_callback(sctx, s, cb, arg); 995 input_parse(ictx, buf, len); 996 screen_write_stop(sctx); 997 } 998 999 /* Split the parameter list (if any). */ 1000 static int 1001 input_split(struct input_ctx *ictx) 1002 { 1003 const char *errstr; 1004 char *ptr, *out; 1005 struct input_param *ip; 1006 u_int i; 1007 1008 for (i = 0; i < ictx->param_list_len; i++) { 1009 if (ictx->param_list[i].type == INPUT_STRING) 1010 free(ictx->param_list[i].str); 1011 } 1012 ictx->param_list_len = 0; 1013 1014 if (ictx->param_len == 0) 1015 return (0); 1016 ip = &ictx->param_list[0]; 1017 1018 ptr = ictx->param_buf; 1019 while ((out = strsep(&ptr, ";")) != NULL) { 1020 if (*out == '\0') 1021 ip->type = INPUT_MISSING; 1022 else { 1023 if (strchr(out, ':') != NULL) { 1024 ip->type = INPUT_STRING; 1025 ip->str = xstrdup(out); 1026 } else { 1027 ip->type = INPUT_NUMBER; 1028 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1029 if (errstr != NULL) 1030 return (-1); 1031 } 1032 } 1033 ip = &ictx->param_list[++ictx->param_list_len]; 1034 if (ictx->param_list_len == nitems(ictx->param_list)) 1035 return (-1); 1036 } 1037 1038 for (i = 0; i < ictx->param_list_len; i++) { 1039 ip = &ictx->param_list[i]; 1040 if (ip->type == INPUT_MISSING) 1041 log_debug("parameter %u: missing", i); 1042 else if (ip->type == INPUT_STRING) 1043 log_debug("parameter %u: string %s", i, ip->str); 1044 else if (ip->type == INPUT_NUMBER) 1045 log_debug("parameter %u: number %d", i, ip->num); 1046 } 1047 1048 return (0); 1049 } 1050 1051 /* Get an argument or return default value. */ 1052 static int 1053 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1054 { 1055 struct input_param *ip; 1056 int retval; 1057 1058 if (validx >= ictx->param_list_len) 1059 return (defval); 1060 ip = &ictx->param_list[validx]; 1061 if (ip->type == INPUT_MISSING) 1062 return (defval); 1063 if (ip->type == INPUT_STRING) 1064 return (-1); 1065 retval = ip->num; 1066 if (retval < minval) 1067 return (minval); 1068 return (retval); 1069 } 1070 1071 /* Reply to terminal query. */ 1072 static void 1073 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1074 { 1075 struct bufferevent *bev = ictx->event; 1076 va_list ap; 1077 char *reply; 1078 1079 va_start(ap, fmt); 1080 xvasprintf(&reply, fmt, ap); 1081 va_end(ap); 1082 1083 bufferevent_write(bev, reply, strlen(reply)); 1084 free(reply); 1085 } 1086 1087 /* Clear saved state. */ 1088 static void 1089 input_clear(struct input_ctx *ictx) 1090 { 1091 event_del(&ictx->timer); 1092 1093 *ictx->interm_buf = '\0'; 1094 ictx->interm_len = 0; 1095 1096 *ictx->param_buf = '\0'; 1097 ictx->param_len = 0; 1098 1099 *ictx->input_buf = '\0'; 1100 ictx->input_len = 0; 1101 1102 ictx->input_end = INPUT_END_ST; 1103 1104 ictx->flags &= ~INPUT_DISCARD; 1105 } 1106 1107 /* Reset for ground state. */ 1108 static void 1109 input_ground(struct input_ctx *ictx) 1110 { 1111 event_del(&ictx->timer); 1112 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1113 1114 if (ictx->input_space > INPUT_BUF_START) { 1115 ictx->input_space = INPUT_BUF_START; 1116 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1117 } 1118 } 1119 1120 /* Output this character to the screen. */ 1121 static int 1122 input_print(struct input_ctx *ictx) 1123 { 1124 struct screen_write_ctx *sctx = &ictx->ctx; 1125 int set; 1126 1127 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1128 1129 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1130 if (set == 1) 1131 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1132 else 1133 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1134 1135 utf8_set(&ictx->cell.cell.data, ictx->ch); 1136 screen_write_collect_add(sctx, &ictx->cell.cell); 1137 ictx->last = ictx->ch; 1138 1139 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1140 1141 return (0); 1142 } 1143 1144 /* Collect intermediate string. */ 1145 static int 1146 input_intermediate(struct input_ctx *ictx) 1147 { 1148 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1149 ictx->flags |= INPUT_DISCARD; 1150 else { 1151 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1152 ictx->interm_buf[ictx->interm_len] = '\0'; 1153 } 1154 1155 return (0); 1156 } 1157 1158 /* Collect parameter string. */ 1159 static int 1160 input_parameter(struct input_ctx *ictx) 1161 { 1162 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1163 ictx->flags |= INPUT_DISCARD; 1164 else { 1165 ictx->param_buf[ictx->param_len++] = ictx->ch; 1166 ictx->param_buf[ictx->param_len] = '\0'; 1167 } 1168 1169 return (0); 1170 } 1171 1172 /* Collect input string. */ 1173 static int 1174 input_input(struct input_ctx *ictx) 1175 { 1176 size_t available; 1177 1178 available = ictx->input_space; 1179 while (ictx->input_len + 1 >= available) { 1180 available *= 2; 1181 if (available > INPUT_BUF_LIMIT) { 1182 ictx->flags |= INPUT_DISCARD; 1183 return (0); 1184 } 1185 ictx->input_buf = xrealloc(ictx->input_buf, available); 1186 ictx->input_space = available; 1187 } 1188 ictx->input_buf[ictx->input_len++] = ictx->ch; 1189 ictx->input_buf[ictx->input_len] = '\0'; 1190 1191 return (0); 1192 } 1193 1194 /* Execute C0 control sequence. */ 1195 static int 1196 input_c0_dispatch(struct input_ctx *ictx) 1197 { 1198 struct screen_write_ctx *sctx = &ictx->ctx; 1199 struct window_pane *wp = ictx->wp; 1200 struct screen *s = sctx->s; 1201 1202 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1203 1204 log_debug("%s: '%c'", __func__, ictx->ch); 1205 1206 switch (ictx->ch) { 1207 case '\000': /* NUL */ 1208 break; 1209 case '\007': /* BEL */ 1210 if (wp != NULL) 1211 alerts_queue(wp->window, WINDOW_BELL); 1212 break; 1213 case '\010': /* BS */ 1214 screen_write_backspace(sctx); 1215 break; 1216 case '\011': /* HT */ 1217 /* Don't tab beyond the end of the line. */ 1218 if (s->cx >= screen_size_x(s) - 1) 1219 break; 1220 1221 /* Find the next tab point, or use the last column if none. */ 1222 do { 1223 s->cx++; 1224 if (bit_test(s->tabs, s->cx)) 1225 break; 1226 } while (s->cx < screen_size_x(s) - 1); 1227 break; 1228 case '\012': /* LF */ 1229 case '\013': /* VT */ 1230 case '\014': /* FF */ 1231 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1232 if (s->mode & MODE_CRLF) 1233 screen_write_carriagereturn(sctx); 1234 break; 1235 case '\015': /* CR */ 1236 screen_write_carriagereturn(sctx); 1237 break; 1238 case '\016': /* SO */ 1239 ictx->cell.set = 1; 1240 break; 1241 case '\017': /* SI */ 1242 ictx->cell.set = 0; 1243 break; 1244 default: 1245 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1246 break; 1247 } 1248 1249 ictx->last = -1; 1250 return (0); 1251 } 1252 1253 /* Execute escape sequence. */ 1254 static int 1255 input_esc_dispatch(struct input_ctx *ictx) 1256 { 1257 struct screen_write_ctx *sctx = &ictx->ctx; 1258 struct screen *s = sctx->s; 1259 struct input_table_entry *entry; 1260 1261 if (ictx->flags & INPUT_DISCARD) 1262 return (0); 1263 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1264 1265 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1266 sizeof input_esc_table[0], input_table_compare); 1267 if (entry == NULL) { 1268 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1269 return (0); 1270 } 1271 1272 switch (entry->type) { 1273 case INPUT_ESC_RIS: 1274 colour_palette_clear(ictx->palette); 1275 input_reset_cell(ictx); 1276 screen_write_reset(sctx); 1277 screen_write_fullredraw(sctx); 1278 break; 1279 case INPUT_ESC_IND: 1280 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1281 break; 1282 case INPUT_ESC_NEL: 1283 screen_write_carriagereturn(sctx); 1284 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1285 break; 1286 case INPUT_ESC_HTS: 1287 if (s->cx < screen_size_x(s)) 1288 bit_set(s->tabs, s->cx); 1289 break; 1290 case INPUT_ESC_RI: 1291 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1292 break; 1293 case INPUT_ESC_DECKPAM: 1294 screen_write_mode_set(sctx, MODE_KKEYPAD); 1295 break; 1296 case INPUT_ESC_DECKPNM: 1297 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1298 break; 1299 case INPUT_ESC_DECSC: 1300 input_save_state(ictx); 1301 break; 1302 case INPUT_ESC_DECRC: 1303 input_restore_state(ictx); 1304 break; 1305 case INPUT_ESC_DECALN: 1306 screen_write_alignmenttest(sctx); 1307 break; 1308 case INPUT_ESC_SCSG0_ON: 1309 ictx->cell.g0set = 1; 1310 break; 1311 case INPUT_ESC_SCSG0_OFF: 1312 ictx->cell.g0set = 0; 1313 break; 1314 case INPUT_ESC_SCSG1_ON: 1315 ictx->cell.g1set = 1; 1316 break; 1317 case INPUT_ESC_SCSG1_OFF: 1318 ictx->cell.g1set = 0; 1319 break; 1320 case INPUT_ESC_ST: 1321 /* ST terminates OSC but the state transition already did it. */ 1322 break; 1323 } 1324 1325 ictx->last = -1; 1326 return (0); 1327 } 1328 1329 /* Execute control sequence. */ 1330 static int 1331 input_csi_dispatch(struct input_ctx *ictx) 1332 { 1333 struct screen_write_ctx *sctx = &ictx->ctx; 1334 struct screen *s = sctx->s; 1335 struct input_table_entry *entry; 1336 int i, n, m; 1337 u_int cx, bg = ictx->cell.cell.bg; 1338 1339 if (ictx->flags & INPUT_DISCARD) 1340 return (0); 1341 1342 log_debug("%s: '%c' \"%s\" \"%s\"", 1343 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1344 1345 if (input_split(ictx) != 0) 1346 return (0); 1347 1348 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1349 sizeof input_csi_table[0], input_table_compare); 1350 if (entry == NULL) { 1351 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1352 return (0); 1353 } 1354 1355 switch (entry->type) { 1356 case INPUT_CSI_CBT: 1357 /* Find the previous tab point, n times. */ 1358 cx = s->cx; 1359 if (cx > screen_size_x(s) - 1) 1360 cx = screen_size_x(s) - 1; 1361 n = input_get(ictx, 0, 1, 1); 1362 if (n == -1) 1363 break; 1364 while (cx > 0 && n-- > 0) { 1365 do 1366 cx--; 1367 while (cx > 0 && !bit_test(s->tabs, cx)); 1368 } 1369 s->cx = cx; 1370 break; 1371 case INPUT_CSI_CUB: 1372 n = input_get(ictx, 0, 1, 1); 1373 if (n != -1) 1374 screen_write_cursorleft(sctx, n); 1375 break; 1376 case INPUT_CSI_CUD: 1377 n = input_get(ictx, 0, 1, 1); 1378 if (n != -1) 1379 screen_write_cursordown(sctx, n); 1380 break; 1381 case INPUT_CSI_CUF: 1382 n = input_get(ictx, 0, 1, 1); 1383 if (n != -1) 1384 screen_write_cursorright(sctx, n); 1385 break; 1386 case INPUT_CSI_CUP: 1387 n = input_get(ictx, 0, 1, 1); 1388 m = input_get(ictx, 1, 1, 1); 1389 if (n != -1 && m != -1) 1390 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1391 break; 1392 case INPUT_CSI_MODSET: 1393 n = input_get(ictx, 0, 0, 0); 1394 m = input_get(ictx, 1, 0, 0); 1395 if (options_get_number(global_options, "extended-keys") == 2) 1396 break; 1397 if (n == 0 || (n == 4 && m == 0)) 1398 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1399 else if (n == 4 && (m == 1 || m == 2)) 1400 screen_write_mode_set(sctx, MODE_KEXTENDED); 1401 break; 1402 case INPUT_CSI_MODOFF: 1403 n = input_get(ictx, 0, 0, 0); 1404 if (n == 4) 1405 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1406 break; 1407 case INPUT_CSI_WINOPS: 1408 input_csi_dispatch_winops(ictx); 1409 break; 1410 case INPUT_CSI_CUU: 1411 n = input_get(ictx, 0, 1, 1); 1412 if (n != -1) 1413 screen_write_cursorup(sctx, n); 1414 break; 1415 case INPUT_CSI_CNL: 1416 n = input_get(ictx, 0, 1, 1); 1417 if (n != -1) { 1418 screen_write_carriagereturn(sctx); 1419 screen_write_cursordown(sctx, n); 1420 } 1421 break; 1422 case INPUT_CSI_CPL: 1423 n = input_get(ictx, 0, 1, 1); 1424 if (n != -1) { 1425 screen_write_carriagereturn(sctx); 1426 screen_write_cursorup(sctx, n); 1427 } 1428 break; 1429 case INPUT_CSI_DA: 1430 switch (input_get(ictx, 0, 0, 0)) { 1431 case -1: 1432 break; 1433 case 0: 1434 input_reply(ictx, "\033[?1;2c"); 1435 break; 1436 default: 1437 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1438 break; 1439 } 1440 break; 1441 case INPUT_CSI_DA_TWO: 1442 switch (input_get(ictx, 0, 0, 0)) { 1443 case -1: 1444 break; 1445 case 0: 1446 input_reply(ictx, "\033[>84;0;0c"); 1447 break; 1448 default: 1449 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1450 break; 1451 } 1452 break; 1453 case INPUT_CSI_ECH: 1454 n = input_get(ictx, 0, 1, 1); 1455 if (n != -1) 1456 screen_write_clearcharacter(sctx, n, bg); 1457 break; 1458 case INPUT_CSI_DCH: 1459 n = input_get(ictx, 0, 1, 1); 1460 if (n != -1) 1461 screen_write_deletecharacter(sctx, n, bg); 1462 break; 1463 case INPUT_CSI_DECSTBM: 1464 n = input_get(ictx, 0, 1, 1); 1465 m = input_get(ictx, 1, 1, screen_size_y(s)); 1466 if (n != -1 && m != -1) 1467 screen_write_scrollregion(sctx, n - 1, m - 1); 1468 break; 1469 case INPUT_CSI_DL: 1470 n = input_get(ictx, 0, 1, 1); 1471 if (n != -1) 1472 screen_write_deleteline(sctx, n, bg); 1473 break; 1474 case INPUT_CSI_DSR: 1475 switch (input_get(ictx, 0, 0, 0)) { 1476 case -1: 1477 break; 1478 case 5: 1479 input_reply(ictx, "\033[0n"); 1480 break; 1481 case 6: 1482 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1483 break; 1484 default: 1485 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1486 break; 1487 } 1488 break; 1489 case INPUT_CSI_ED: 1490 switch (input_get(ictx, 0, 0, 0)) { 1491 case -1: 1492 break; 1493 case 0: 1494 screen_write_clearendofscreen(sctx, bg); 1495 break; 1496 case 1: 1497 screen_write_clearstartofscreen(sctx, bg); 1498 break; 1499 case 2: 1500 screen_write_clearscreen(sctx, bg); 1501 break; 1502 case 3: 1503 if (input_get(ictx, 1, 0, 0) == 0) { 1504 /* 1505 * Linux console extension to clear history 1506 * (for example before locking the screen). 1507 */ 1508 screen_write_clearhistory(sctx); 1509 } 1510 break; 1511 default: 1512 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1513 break; 1514 } 1515 break; 1516 case INPUT_CSI_EL: 1517 switch (input_get(ictx, 0, 0, 0)) { 1518 case -1: 1519 break; 1520 case 0: 1521 screen_write_clearendofline(sctx, bg); 1522 break; 1523 case 1: 1524 screen_write_clearstartofline(sctx, bg); 1525 break; 1526 case 2: 1527 screen_write_clearline(sctx, bg); 1528 break; 1529 default: 1530 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1531 break; 1532 } 1533 break; 1534 case INPUT_CSI_HPA: 1535 n = input_get(ictx, 0, 1, 1); 1536 if (n != -1) 1537 screen_write_cursormove(sctx, n - 1, -1, 1); 1538 break; 1539 case INPUT_CSI_ICH: 1540 n = input_get(ictx, 0, 1, 1); 1541 if (n != -1) 1542 screen_write_insertcharacter(sctx, n, bg); 1543 break; 1544 case INPUT_CSI_IL: 1545 n = input_get(ictx, 0, 1, 1); 1546 if (n != -1) 1547 screen_write_insertline(sctx, n, bg); 1548 break; 1549 case INPUT_CSI_REP: 1550 n = input_get(ictx, 0, 1, 1); 1551 if (n == -1) 1552 break; 1553 1554 m = screen_size_x(s) - s->cx; 1555 if (n > m) 1556 n = m; 1557 1558 if (ictx->last == -1) 1559 break; 1560 ictx->ch = ictx->last; 1561 1562 for (i = 0; i < n; i++) 1563 input_print(ictx); 1564 break; 1565 case INPUT_CSI_RCP: 1566 input_restore_state(ictx); 1567 break; 1568 case INPUT_CSI_RM: 1569 input_csi_dispatch_rm(ictx); 1570 break; 1571 case INPUT_CSI_RM_PRIVATE: 1572 input_csi_dispatch_rm_private(ictx); 1573 break; 1574 case INPUT_CSI_SCP: 1575 input_save_state(ictx); 1576 break; 1577 case INPUT_CSI_SGR: 1578 input_csi_dispatch_sgr(ictx); 1579 break; 1580 case INPUT_CSI_SM: 1581 input_csi_dispatch_sm(ictx); 1582 break; 1583 case INPUT_CSI_SM_PRIVATE: 1584 input_csi_dispatch_sm_private(ictx); 1585 break; 1586 case INPUT_CSI_SU: 1587 n = input_get(ictx, 0, 1, 1); 1588 if (n != -1) 1589 screen_write_scrollup(sctx, n, bg); 1590 break; 1591 case INPUT_CSI_SD: 1592 n = input_get(ictx, 0, 1, 1); 1593 if (n != -1) 1594 screen_write_scrolldown(sctx, n, bg); 1595 break; 1596 case INPUT_CSI_TBC: 1597 switch (input_get(ictx, 0, 0, 0)) { 1598 case -1: 1599 break; 1600 case 0: 1601 if (s->cx < screen_size_x(s)) 1602 bit_clear(s->tabs, s->cx); 1603 break; 1604 case 3: 1605 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1606 break; 1607 default: 1608 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1609 break; 1610 } 1611 break; 1612 case INPUT_CSI_VPA: 1613 n = input_get(ictx, 0, 1, 1); 1614 if (n != -1) 1615 screen_write_cursormove(sctx, -1, n - 1, 1); 1616 break; 1617 case INPUT_CSI_DECSCUSR: 1618 n = input_get(ictx, 0, 0, 0); 1619 if (n != -1) 1620 screen_set_cursor_style(s, n); 1621 break; 1622 case INPUT_CSI_XDA: 1623 n = input_get(ictx, 0, 0, 0); 1624 if (n == 0) 1625 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1626 break; 1627 1628 } 1629 1630 ictx->last = -1; 1631 return (0); 1632 } 1633 1634 /* Handle CSI RM. */ 1635 static void 1636 input_csi_dispatch_rm(struct input_ctx *ictx) 1637 { 1638 struct screen_write_ctx *sctx = &ictx->ctx; 1639 u_int i; 1640 1641 for (i = 0; i < ictx->param_list_len; i++) { 1642 switch (input_get(ictx, i, 0, -1)) { 1643 case -1: 1644 break; 1645 case 4: /* IRM */ 1646 screen_write_mode_clear(sctx, MODE_INSERT); 1647 break; 1648 case 34: 1649 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE); 1650 break; 1651 default: 1652 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1653 break; 1654 } 1655 } 1656 } 1657 1658 /* Handle CSI private RM. */ 1659 static void 1660 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1661 { 1662 struct screen_write_ctx *sctx = &ictx->ctx; 1663 struct grid_cell *gc = &ictx->cell.cell; 1664 u_int i; 1665 1666 for (i = 0; i < ictx->param_list_len; i++) { 1667 switch (input_get(ictx, i, 0, -1)) { 1668 case -1: 1669 break; 1670 case 1: /* DECCKM */ 1671 screen_write_mode_clear(sctx, MODE_KCURSOR); 1672 break; 1673 case 3: /* DECCOLM */ 1674 screen_write_cursormove(sctx, 0, 0, 1); 1675 screen_write_clearscreen(sctx, gc->bg); 1676 break; 1677 case 6: /* DECOM */ 1678 screen_write_mode_clear(sctx, MODE_ORIGIN); 1679 screen_write_cursormove(sctx, 0, 0, 1); 1680 break; 1681 case 7: /* DECAWM */ 1682 screen_write_mode_clear(sctx, MODE_WRAP); 1683 break; 1684 case 12: 1685 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING); 1686 break; 1687 case 25: /* TCEM */ 1688 screen_write_mode_clear(sctx, MODE_CURSOR); 1689 break; 1690 case 1000: 1691 case 1001: 1692 case 1002: 1693 case 1003: 1694 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1695 break; 1696 case 1004: 1697 screen_write_mode_clear(sctx, MODE_FOCUSON); 1698 break; 1699 case 1005: 1700 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1701 break; 1702 case 1006: 1703 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1704 break; 1705 case 47: 1706 case 1047: 1707 screen_write_alternateoff(sctx, gc, 0); 1708 break; 1709 case 1049: 1710 screen_write_alternateoff(sctx, gc, 1); 1711 break; 1712 case 2004: 1713 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1714 break; 1715 default: 1716 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1717 break; 1718 } 1719 } 1720 } 1721 1722 /* Handle CSI SM. */ 1723 static void 1724 input_csi_dispatch_sm(struct input_ctx *ictx) 1725 { 1726 struct screen_write_ctx *sctx = &ictx->ctx; 1727 u_int i; 1728 1729 for (i = 0; i < ictx->param_list_len; i++) { 1730 switch (input_get(ictx, i, 0, -1)) { 1731 case -1: 1732 break; 1733 case 4: /* IRM */ 1734 screen_write_mode_set(sctx, MODE_INSERT); 1735 break; 1736 case 34: 1737 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE); 1738 break; 1739 default: 1740 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1741 break; 1742 } 1743 } 1744 } 1745 1746 /* Handle CSI private SM. */ 1747 static void 1748 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1749 { 1750 struct screen_write_ctx *sctx = &ictx->ctx; 1751 struct window_pane *wp = ictx->wp; 1752 struct grid_cell *gc = &ictx->cell.cell; 1753 u_int i; 1754 1755 for (i = 0; i < ictx->param_list_len; i++) { 1756 switch (input_get(ictx, i, 0, -1)) { 1757 case -1: 1758 break; 1759 case 1: /* DECCKM */ 1760 screen_write_mode_set(sctx, MODE_KCURSOR); 1761 break; 1762 case 3: /* DECCOLM */ 1763 screen_write_cursormove(sctx, 0, 0, 1); 1764 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1765 break; 1766 case 6: /* DECOM */ 1767 screen_write_mode_set(sctx, MODE_ORIGIN); 1768 screen_write_cursormove(sctx, 0, 0, 1); 1769 break; 1770 case 7: /* DECAWM */ 1771 screen_write_mode_set(sctx, MODE_WRAP); 1772 break; 1773 case 12: 1774 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING); 1775 break; 1776 case 25: /* TCEM */ 1777 screen_write_mode_set(sctx, MODE_CURSOR); 1778 break; 1779 case 1000: 1780 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1781 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1782 break; 1783 case 1002: 1784 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1785 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1786 break; 1787 case 1003: 1788 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1789 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1790 break; 1791 case 1004: 1792 if (sctx->s->mode & MODE_FOCUSON) 1793 break; 1794 screen_write_mode_set(sctx, MODE_FOCUSON); 1795 if (wp == NULL) 1796 break; 1797 if (wp->flags & PANE_FOCUSED) 1798 bufferevent_write(wp->event, "\033[I", 3); 1799 else 1800 bufferevent_write(wp->event, "\033[O", 3); 1801 break; 1802 case 1005: 1803 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1804 break; 1805 case 1006: 1806 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1807 break; 1808 case 47: 1809 case 1047: 1810 screen_write_alternateon(sctx, gc, 0); 1811 break; 1812 case 1049: 1813 screen_write_alternateon(sctx, gc, 1); 1814 break; 1815 case 2004: 1816 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1817 break; 1818 default: 1819 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1820 break; 1821 } 1822 } 1823 } 1824 1825 /* Handle CSI window operations. */ 1826 static void 1827 input_csi_dispatch_winops(struct input_ctx *ictx) 1828 { 1829 struct screen_write_ctx *sctx = &ictx->ctx; 1830 struct screen *s = sctx->s; 1831 struct window_pane *wp = ictx->wp; 1832 u_int x = screen_size_x(s), y = screen_size_y(s); 1833 int n, m; 1834 1835 m = 0; 1836 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1837 switch (n) { 1838 case 1: 1839 case 2: 1840 case 5: 1841 case 6: 1842 case 7: 1843 case 11: 1844 case 13: 1845 case 14: 1846 case 19: 1847 case 20: 1848 case 21: 1849 case 24: 1850 break; 1851 case 3: 1852 case 4: 1853 case 8: 1854 m++; 1855 if (input_get(ictx, m, 0, -1) == -1) 1856 return; 1857 /* FALLTHROUGH */ 1858 case 9: 1859 case 10: 1860 m++; 1861 if (input_get(ictx, m, 0, -1) == -1) 1862 return; 1863 break; 1864 case 22: 1865 m++; 1866 switch (input_get(ictx, m, 0, -1)) { 1867 case -1: 1868 return; 1869 case 0: 1870 case 2: 1871 screen_push_title(sctx->s); 1872 break; 1873 } 1874 break; 1875 case 23: 1876 m++; 1877 switch (input_get(ictx, m, 0, -1)) { 1878 case -1: 1879 return; 1880 case 0: 1881 case 2: 1882 screen_pop_title(sctx->s); 1883 if (wp == NULL) 1884 break; 1885 notify_pane("pane-title-changed", wp); 1886 server_redraw_window_borders(wp->window); 1887 server_status_window(wp->window); 1888 break; 1889 } 1890 break; 1891 case 18: 1892 input_reply(ictx, "\033[8;%u;%ut", x, y); 1893 break; 1894 default: 1895 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1896 break; 1897 } 1898 m++; 1899 } 1900 } 1901 1902 /* Helper for 256 colour SGR. */ 1903 static int 1904 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1905 { 1906 struct grid_cell *gc = &ictx->cell.cell; 1907 1908 if (c == -1 || c > 255) { 1909 if (fgbg == 38) 1910 gc->fg = 8; 1911 else if (fgbg == 48) 1912 gc->bg = 8; 1913 } else { 1914 if (fgbg == 38) 1915 gc->fg = c | COLOUR_FLAG_256; 1916 else if (fgbg == 48) 1917 gc->bg = c | COLOUR_FLAG_256; 1918 else if (fgbg == 58) 1919 gc->us = c | COLOUR_FLAG_256; 1920 } 1921 return (1); 1922 } 1923 1924 /* Handle CSI SGR for 256 colours. */ 1925 static void 1926 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1927 { 1928 int c; 1929 1930 c = input_get(ictx, (*i) + 1, 0, -1); 1931 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1932 (*i)++; 1933 } 1934 1935 /* Helper for RGB colour SGR. */ 1936 static int 1937 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1938 int b) 1939 { 1940 struct grid_cell *gc = &ictx->cell.cell; 1941 1942 if (r == -1 || r > 255) 1943 return (0); 1944 if (g == -1 || g > 255) 1945 return (0); 1946 if (b == -1 || b > 255) 1947 return (0); 1948 1949 if (fgbg == 38) 1950 gc->fg = colour_join_rgb(r, g, b); 1951 else if (fgbg == 48) 1952 gc->bg = colour_join_rgb(r, g, b); 1953 else if (fgbg == 58) 1954 gc->us = colour_join_rgb(r, g, b); 1955 return (1); 1956 } 1957 1958 /* Handle CSI SGR for RGB colours. */ 1959 static void 1960 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1961 { 1962 int r, g, b; 1963 1964 r = input_get(ictx, (*i) + 1, 0, -1); 1965 g = input_get(ictx, (*i) + 2, 0, -1); 1966 b = input_get(ictx, (*i) + 3, 0, -1); 1967 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1968 (*i) += 3; 1969 } 1970 1971 /* Handle CSI SGR with a ISO parameter. */ 1972 static void 1973 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1974 { 1975 struct grid_cell *gc = &ictx->cell.cell; 1976 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1977 int p[8]; 1978 u_int n; 1979 const char *errstr; 1980 1981 for (n = 0; n < nitems(p); n++) 1982 p[n] = -1; 1983 n = 0; 1984 1985 ptr = copy = xstrdup(s); 1986 while ((out = strsep(&ptr, ":")) != NULL) { 1987 if (*out != '\0') { 1988 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1989 if (errstr != NULL || n == nitems(p)) { 1990 free(copy); 1991 return; 1992 } 1993 } else { 1994 n++; 1995 if (n == nitems(p)) { 1996 free(copy); 1997 return; 1998 } 1999 } 2000 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 2001 } 2002 free(copy); 2003 2004 if (n == 0) 2005 return; 2006 if (p[0] == 4) { 2007 if (n != 2) 2008 return; 2009 switch (p[1]) { 2010 case 0: 2011 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2012 break; 2013 case 1: 2014 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2015 gc->attr |= GRID_ATTR_UNDERSCORE; 2016 break; 2017 case 2: 2018 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2019 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2020 break; 2021 case 3: 2022 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2023 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2024 break; 2025 case 4: 2026 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2027 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2028 break; 2029 case 5: 2030 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2031 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2032 break; 2033 } 2034 return; 2035 } 2036 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2037 return; 2038 switch (p[1]) { 2039 case 2: 2040 if (n < 3) 2041 break; 2042 if (n == 5) 2043 i = 2; 2044 else 2045 i = 3; 2046 if (n < i + 3) 2047 break; 2048 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2049 p[i + 2]); 2050 break; 2051 case 5: 2052 if (n < 3) 2053 break; 2054 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2055 break; 2056 } 2057 } 2058 2059 /* Handle CSI SGR. */ 2060 static void 2061 input_csi_dispatch_sgr(struct input_ctx *ictx) 2062 { 2063 struct grid_cell *gc = &ictx->cell.cell; 2064 u_int i; 2065 int n; 2066 2067 if (ictx->param_list_len == 0) { 2068 memcpy(gc, &grid_default_cell, sizeof *gc); 2069 return; 2070 } 2071 2072 for (i = 0; i < ictx->param_list_len; i++) { 2073 if (ictx->param_list[i].type == INPUT_STRING) { 2074 input_csi_dispatch_sgr_colon(ictx, i); 2075 continue; 2076 } 2077 n = input_get(ictx, i, 0, 0); 2078 if (n == -1) 2079 continue; 2080 2081 if (n == 38 || n == 48 || n == 58) { 2082 i++; 2083 switch (input_get(ictx, i, 0, -1)) { 2084 case 2: 2085 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2086 break; 2087 case 5: 2088 input_csi_dispatch_sgr_256(ictx, n, &i); 2089 break; 2090 } 2091 continue; 2092 } 2093 2094 switch (n) { 2095 case 0: 2096 memcpy(gc, &grid_default_cell, sizeof *gc); 2097 break; 2098 case 1: 2099 gc->attr |= GRID_ATTR_BRIGHT; 2100 break; 2101 case 2: 2102 gc->attr |= GRID_ATTR_DIM; 2103 break; 2104 case 3: 2105 gc->attr |= GRID_ATTR_ITALICS; 2106 break; 2107 case 4: 2108 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2109 gc->attr |= GRID_ATTR_UNDERSCORE; 2110 break; 2111 case 5: 2112 case 6: 2113 gc->attr |= GRID_ATTR_BLINK; 2114 break; 2115 case 7: 2116 gc->attr |= GRID_ATTR_REVERSE; 2117 break; 2118 case 8: 2119 gc->attr |= GRID_ATTR_HIDDEN; 2120 break; 2121 case 9: 2122 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2123 break; 2124 case 21: 2125 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2126 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2127 break; 2128 case 22: 2129 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2130 break; 2131 case 23: 2132 gc->attr &= ~GRID_ATTR_ITALICS; 2133 break; 2134 case 24: 2135 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2136 break; 2137 case 25: 2138 gc->attr &= ~GRID_ATTR_BLINK; 2139 break; 2140 case 27: 2141 gc->attr &= ~GRID_ATTR_REVERSE; 2142 break; 2143 case 28: 2144 gc->attr &= ~GRID_ATTR_HIDDEN; 2145 break; 2146 case 29: 2147 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2148 break; 2149 case 30: 2150 case 31: 2151 case 32: 2152 case 33: 2153 case 34: 2154 case 35: 2155 case 36: 2156 case 37: 2157 gc->fg = n - 30; 2158 break; 2159 case 39: 2160 gc->fg = 8; 2161 break; 2162 case 40: 2163 case 41: 2164 case 42: 2165 case 43: 2166 case 44: 2167 case 45: 2168 case 46: 2169 case 47: 2170 gc->bg = n - 40; 2171 break; 2172 case 49: 2173 gc->bg = 8; 2174 break; 2175 case 53: 2176 gc->attr |= GRID_ATTR_OVERLINE; 2177 break; 2178 case 55: 2179 gc->attr &= ~GRID_ATTR_OVERLINE; 2180 break; 2181 case 59: 2182 gc->us = 0; 2183 break; 2184 case 90: 2185 case 91: 2186 case 92: 2187 case 93: 2188 case 94: 2189 case 95: 2190 case 96: 2191 case 97: 2192 gc->fg = n; 2193 break; 2194 case 100: 2195 case 101: 2196 case 102: 2197 case 103: 2198 case 104: 2199 case 105: 2200 case 106: 2201 case 107: 2202 gc->bg = n - 10; 2203 break; 2204 } 2205 } 2206 } 2207 2208 /* End of input with BEL. */ 2209 static int 2210 input_end_bel(struct input_ctx *ictx) 2211 { 2212 log_debug("%s", __func__); 2213 2214 ictx->input_end = INPUT_END_BEL; 2215 2216 return (0); 2217 } 2218 2219 /* DCS string started. */ 2220 static void 2221 input_enter_dcs(struct input_ctx *ictx) 2222 { 2223 log_debug("%s", __func__); 2224 2225 input_clear(ictx); 2226 input_start_timer(ictx); 2227 ictx->last = -1; 2228 } 2229 2230 /* DCS terminator (ST) received. */ 2231 static int 2232 input_dcs_dispatch(struct input_ctx *ictx) 2233 { 2234 struct screen_write_ctx *sctx = &ictx->ctx; 2235 u_char *buf = ictx->input_buf; 2236 size_t len = ictx->input_len; 2237 const char prefix[] = "tmux;"; 2238 const u_int prefixlen = (sizeof prefix) - 1; 2239 2240 if (ictx->flags & INPUT_DISCARD) 2241 return (0); 2242 2243 log_debug("%s: \"%s\"", __func__, buf); 2244 2245 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2246 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2247 2248 return (0); 2249 } 2250 2251 /* OSC string started. */ 2252 static void 2253 input_enter_osc(struct input_ctx *ictx) 2254 { 2255 log_debug("%s", __func__); 2256 2257 input_clear(ictx); 2258 input_start_timer(ictx); 2259 ictx->last = -1; 2260 } 2261 2262 /* OSC terminator (ST) received. */ 2263 static void 2264 input_exit_osc(struct input_ctx *ictx) 2265 { 2266 struct screen_write_ctx *sctx = &ictx->ctx; 2267 struct window_pane *wp = ictx->wp; 2268 u_char *p = ictx->input_buf; 2269 u_int option; 2270 2271 if (ictx->flags & INPUT_DISCARD) 2272 return; 2273 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2274 return; 2275 2276 log_debug("%s: \"%s\" (end %s)", __func__, p, 2277 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2278 2279 option = 0; 2280 while (*p >= '0' && *p <= '9') 2281 option = option * 10 + *p++ - '0'; 2282 if (*p == ';') 2283 p++; 2284 2285 switch (option) { 2286 case 0: 2287 case 2: 2288 if (screen_set_title(sctx->s, p) && wp != NULL) { 2289 notify_pane("pane-title-changed", wp); 2290 server_redraw_window_borders(wp->window); 2291 server_status_window(wp->window); 2292 } 2293 break; 2294 case 4: 2295 input_osc_4(ictx, p); 2296 break; 2297 case 7: 2298 if (utf8_isvalid(p)) { 2299 screen_set_path(sctx->s, p); 2300 if (wp != NULL) { 2301 server_redraw_window_borders(wp->window); 2302 server_status_window(wp->window); 2303 } 2304 } 2305 break; 2306 case 10: 2307 input_osc_10(ictx, p); 2308 break; 2309 case 11: 2310 input_osc_11(ictx, p); 2311 break; 2312 case 12: 2313 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2314 screen_set_cursor_colour(sctx->s, p); 2315 break; 2316 case 52: 2317 input_osc_52(ictx, p); 2318 break; 2319 case 104: 2320 input_osc_104(ictx, p); 2321 break; 2322 case 110: 2323 input_osc_110(ictx, p); 2324 break; 2325 case 111: 2326 input_osc_111(ictx, p); 2327 break; 2328 case 112: 2329 if (*p == '\0') /* no arguments allowed */ 2330 screen_set_cursor_colour(sctx->s, ""); 2331 break; 2332 default: 2333 log_debug("%s: unknown '%u'", __func__, option); 2334 break; 2335 } 2336 } 2337 2338 /* APC string started. */ 2339 static void 2340 input_enter_apc(struct input_ctx *ictx) 2341 { 2342 log_debug("%s", __func__); 2343 2344 input_clear(ictx); 2345 input_start_timer(ictx); 2346 ictx->last = -1; 2347 } 2348 2349 /* APC terminator (ST) received. */ 2350 static void 2351 input_exit_apc(struct input_ctx *ictx) 2352 { 2353 struct screen_write_ctx *sctx = &ictx->ctx; 2354 struct window_pane *wp = ictx->wp; 2355 2356 if (ictx->flags & INPUT_DISCARD) 2357 return; 2358 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2359 2360 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2361 notify_pane("pane-title-changed", wp); 2362 server_redraw_window_borders(wp->window); 2363 server_status_window(wp->window); 2364 } 2365 } 2366 2367 /* Rename string started. */ 2368 static void 2369 input_enter_rename(struct input_ctx *ictx) 2370 { 2371 log_debug("%s", __func__); 2372 2373 input_clear(ictx); 2374 input_start_timer(ictx); 2375 ictx->last = -1; 2376 } 2377 2378 /* Rename terminator (ST) received. */ 2379 static void 2380 input_exit_rename(struct input_ctx *ictx) 2381 { 2382 struct window_pane *wp = ictx->wp; 2383 struct options_entry *o; 2384 2385 if (wp == NULL) 2386 return; 2387 if (ictx->flags & INPUT_DISCARD) 2388 return; 2389 if (!options_get_number(ictx->wp->options, "allow-rename")) 2390 return; 2391 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2392 2393 if (!utf8_isvalid(ictx->input_buf)) 2394 return; 2395 2396 if (ictx->input_len == 0) { 2397 o = options_get_only(wp->window->options, "automatic-rename"); 2398 if (o != NULL) 2399 options_remove_or_default(o, -1, NULL); 2400 return; 2401 } 2402 window_set_name(wp->window, ictx->input_buf); 2403 options_set_number(wp->window->options, "automatic-rename", 0); 2404 server_redraw_window_borders(wp->window); 2405 server_status_window(wp->window); 2406 } 2407 2408 /* Open UTF-8 character. */ 2409 static int 2410 input_top_bit_set(struct input_ctx *ictx) 2411 { 2412 struct screen_write_ctx *sctx = &ictx->ctx; 2413 struct utf8_data *ud = &ictx->utf8data; 2414 2415 ictx->last = -1; 2416 2417 if (!ictx->utf8started) { 2418 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2419 return (0); 2420 ictx->utf8started = 1; 2421 return (0); 2422 } 2423 2424 switch (utf8_append(ud, ictx->ch)) { 2425 case UTF8_MORE: 2426 return (0); 2427 case UTF8_ERROR: 2428 ictx->utf8started = 0; 2429 return (0); 2430 case UTF8_DONE: 2431 break; 2432 } 2433 ictx->utf8started = 0; 2434 2435 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2436 (int)ud->size, ud->data, ud->width); 2437 2438 utf8_copy(&ictx->cell.cell.data, ud); 2439 screen_write_collect_add(sctx, &ictx->cell.cell); 2440 2441 return (0); 2442 } 2443 2444 /* Parse colour from OSC. */ 2445 static int 2446 input_osc_parse_colour(const char *p) 2447 { 2448 double c, m, y, k = 0; 2449 u_int r, g, b; 2450 size_t len = strlen(p); 2451 int colour = -1; 2452 char *copy; 2453 2454 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) || 2455 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) || 2456 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3) 2457 colour = colour_join_rgb(r, g, b); 2458 else if ((len == 18 && 2459 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) || 2460 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3)) 2461 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8); 2462 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 || 2463 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) && 2464 c >= 0 && c <= 1 && m >= 0 && m <= 1 && 2465 y >= 0 && y <= 1 && k >= 0 && k <= 1) { 2466 colour = colour_join_rgb( 2467 (1 - c) * (1 - k) * 255, 2468 (1 - m) * (1 - k) * 255, 2469 (1 - y) * (1 - k) * 255); 2470 } else { 2471 while (len != 0 && *p == ' ') { 2472 p++; 2473 len--; 2474 } 2475 while (len != 0 && p[len - 1] == ' ') 2476 len--; 2477 copy = xstrndup(p, len); 2478 colour = colour_byname(copy); 2479 free(copy); 2480 } 2481 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour)); 2482 return (colour); 2483 } 2484 2485 /* Reply to a colour request. */ 2486 static void 2487 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2488 { 2489 u_char r, g, b; 2490 const char *end; 2491 2492 if (c == 8 || (~c & COLOUR_FLAG_RGB)) 2493 return; 2494 colour_split_rgb(c, &r, &g, &b); 2495 2496 if (ictx->input_end == INPUT_END_BEL) 2497 end = "\007"; 2498 else 2499 end = "\033\\"; 2500 input_reply(ictx, "\033]%u;rgb:%02hhx/%02hhx/%02hhx%s", n, r, g, b, end); 2501 } 2502 2503 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2504 static void 2505 input_osc_4(struct input_ctx *ictx, const char *p) 2506 { 2507 char *copy, *s, *next = NULL; 2508 long idx; 2509 int c, bad = 0, redraw = 0; 2510 2511 copy = s = xstrdup(p); 2512 while (s != NULL && *s != '\0') { 2513 idx = strtol(s, &next, 10); 2514 if (*next++ != ';') { 2515 bad = 1; 2516 break; 2517 } 2518 if (idx < 0 || idx >= 256) { 2519 bad = 1; 2520 break; 2521 } 2522 2523 s = strsep(&next, ";"); 2524 if ((c = input_osc_parse_colour(s)) == -1) { 2525 s = next; 2526 continue; 2527 } 2528 if (colour_palette_set(ictx->palette, idx, c)) 2529 redraw = 1; 2530 s = next; 2531 } 2532 if (bad) 2533 log_debug("bad OSC 4: %s", p); 2534 if (redraw) 2535 screen_write_fullredraw(&ictx->ctx); 2536 free(copy); 2537 } 2538 2539 /* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2540 static void 2541 input_osc_10(struct input_ctx *ictx, const char *p) 2542 { 2543 struct window_pane *wp = ictx->wp; 2544 struct grid_cell defaults; 2545 int c; 2546 2547 if (strcmp(p, "?") == 0) { 2548 if (wp != NULL) { 2549 tty_default_colours(&defaults, wp); 2550 input_osc_colour_reply(ictx, 10, defaults.fg); 2551 } 2552 return; 2553 } 2554 2555 if ((c = input_osc_parse_colour(p)) == -1) { 2556 log_debug("bad OSC 10: %s", p); 2557 return; 2558 } 2559 if (ictx->palette != NULL) { 2560 ictx->palette->fg = c; 2561 if (wp != NULL) 2562 wp->flags |= PANE_STYLECHANGED; 2563 screen_write_fullredraw(&ictx->ctx); 2564 } 2565 } 2566 2567 /* Handle the OSC 110 sequence for resetting background colour. */ 2568 static void 2569 input_osc_110(struct input_ctx *ictx, const char *p) 2570 { 2571 struct window_pane *wp = ictx->wp; 2572 2573 if (*p != '\0') 2574 return; 2575 if (ictx->palette != NULL) { 2576 ictx->palette->fg = 8; 2577 if (wp != NULL) 2578 wp->flags |= PANE_STYLECHANGED; 2579 screen_write_fullredraw(&ictx->ctx); 2580 } 2581 } 2582 2583 /* Handle the OSC 11 sequence for setting and querying background colour. */ 2584 static void 2585 input_osc_11(struct input_ctx *ictx, const char *p) 2586 { 2587 struct window_pane *wp = ictx->wp; 2588 struct grid_cell defaults; 2589 int c; 2590 2591 if (strcmp(p, "?") == 0) { 2592 if (wp != NULL) { 2593 tty_default_colours(&defaults, wp); 2594 input_osc_colour_reply(ictx, 11, defaults.bg); 2595 } 2596 return; 2597 } 2598 2599 if ((c = input_osc_parse_colour(p)) == -1) { 2600 log_debug("bad OSC 11: %s", p); 2601 return; 2602 } 2603 if (ictx->palette != NULL) { 2604 ictx->palette->bg = c; 2605 if (wp != NULL) 2606 wp->flags |= PANE_STYLECHANGED; 2607 screen_write_fullredraw(&ictx->ctx); 2608 } 2609 } 2610 2611 /* Handle the OSC 111 sequence for resetting background colour. */ 2612 static void 2613 input_osc_111(struct input_ctx *ictx, const char *p) 2614 { 2615 struct window_pane *wp = ictx->wp; 2616 2617 if (*p != '\0') 2618 return; 2619 if (ictx->palette != NULL) { 2620 ictx->palette->bg = 8; 2621 if (wp != NULL) 2622 wp->flags |= PANE_STYLECHANGED; 2623 screen_write_fullredraw(&ictx->ctx); 2624 } 2625 } 2626 2627 /* Handle the OSC 52 sequence for setting the clipboard. */ 2628 static void 2629 input_osc_52(struct input_ctx *ictx, const char *p) 2630 { 2631 struct window_pane *wp = ictx->wp; 2632 char *end; 2633 const char *buf; 2634 size_t len; 2635 u_char *out; 2636 int outlen, state; 2637 struct screen_write_ctx ctx; 2638 struct paste_buffer *pb; 2639 2640 if (wp == NULL) 2641 return; 2642 state = options_get_number(global_options, "set-clipboard"); 2643 if (state != 2) 2644 return; 2645 2646 if ((end = strchr(p, ';')) == NULL) 2647 return; 2648 end++; 2649 if (*end == '\0') 2650 return; 2651 log_debug("%s: %s", __func__, end); 2652 2653 if (strcmp(end, "?") == 0) { 2654 if ((pb = paste_get_top(NULL)) != NULL) { 2655 buf = paste_buffer_data(pb, &len); 2656 outlen = 4 * ((len + 2) / 3) + 1; 2657 out = xmalloc(outlen); 2658 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2659 free(out); 2660 return; 2661 } 2662 } else { 2663 outlen = 0; 2664 out = NULL; 2665 } 2666 bufferevent_write(ictx->event, "\033]52;;", 6); 2667 if (outlen != 0) 2668 bufferevent_write(ictx->event, out, outlen); 2669 if (ictx->input_end == INPUT_END_BEL) 2670 bufferevent_write(ictx->event, "\007", 1); 2671 else 2672 bufferevent_write(ictx->event, "\033\\", 2); 2673 free(out); 2674 return; 2675 } 2676 2677 len = (strlen(end) / 4) * 3; 2678 if (len == 0) 2679 return; 2680 2681 out = xmalloc(len); 2682 if ((outlen = b64_pton(end, out, len)) == -1) { 2683 free(out); 2684 return; 2685 } 2686 2687 screen_write_start_pane(&ctx, wp, NULL); 2688 screen_write_setselection(&ctx, out, outlen); 2689 screen_write_stop(&ctx); 2690 notify_pane("pane-set-clipboard", wp); 2691 2692 paste_add(NULL, out, outlen); 2693 } 2694 2695 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2696 static void 2697 input_osc_104(struct input_ctx *ictx, const char *p) 2698 { 2699 char *copy, *s; 2700 long idx; 2701 int bad = 0, redraw = 0; 2702 2703 if (*p == '\0') { 2704 colour_palette_clear(ictx->palette); 2705 screen_write_fullredraw(&ictx->ctx); 2706 return; 2707 } 2708 2709 copy = s = xstrdup(p); 2710 while (*s != '\0') { 2711 idx = strtol(s, &s, 10); 2712 if (*s != '\0' && *s != ';') { 2713 bad = 1; 2714 break; 2715 } 2716 if (idx < 0 || idx >= 256) { 2717 bad = 1; 2718 break; 2719 } 2720 if (colour_palette_set(ictx->palette, idx, -1)) 2721 redraw = 1; 2722 if (*s == ';') 2723 s++; 2724 } 2725 if (bad) 2726 log_debug("bad OSC 104: %s", p); 2727 if (redraw) 2728 screen_write_fullredraw(&ictx->ctx); 2729 free(copy); 2730 } 2731