1 /* $OpenBSD: input.c,v 1.189 2021/06/10 07:24:10 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 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. */ 128 struct input_transition; 129 static int input_split(struct input_ctx *); 130 static int input_get(struct input_ctx *, u_int, int, int); 131 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 132 static void input_set_state(struct input_ctx *, 133 const struct input_transition *); 134 static void input_reset_cell(struct input_ctx *); 135 136 static void input_osc_4(struct input_ctx *, const char *); 137 static void input_osc_10(struct input_ctx *, const char *); 138 static void input_osc_11(struct input_ctx *, const char *); 139 static void input_osc_52(struct input_ctx *, const char *); 140 static void input_osc_104(struct input_ctx *, const char *); 141 static void input_osc_110(struct input_ctx *, const char *); 142 static void input_osc_111(struct input_ctx *, const char *); 143 144 /* Transition entry/exit handlers. */ 145 static void input_clear(struct input_ctx *); 146 static void input_ground(struct input_ctx *); 147 static void input_enter_dcs(struct input_ctx *); 148 static void input_enter_osc(struct input_ctx *); 149 static void input_exit_osc(struct input_ctx *); 150 static void input_enter_apc(struct input_ctx *); 151 static void input_exit_apc(struct input_ctx *); 152 static void input_enter_rename(struct input_ctx *); 153 static void input_exit_rename(struct input_ctx *); 154 155 /* Input state handlers. */ 156 static int input_print(struct input_ctx *); 157 static int input_intermediate(struct input_ctx *); 158 static int input_parameter(struct input_ctx *); 159 static int input_input(struct input_ctx *); 160 static int input_c0_dispatch(struct input_ctx *); 161 static int input_esc_dispatch(struct input_ctx *); 162 static int input_csi_dispatch(struct input_ctx *); 163 static void input_csi_dispatch_rm(struct input_ctx *); 164 static void input_csi_dispatch_rm_private(struct input_ctx *); 165 static void input_csi_dispatch_sm(struct input_ctx *); 166 static void input_csi_dispatch_sm_private(struct input_ctx *); 167 static void input_csi_dispatch_winops(struct input_ctx *); 168 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 169 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 170 static void input_csi_dispatch_sgr(struct input_ctx *); 171 static int input_dcs_dispatch(struct input_ctx *); 172 static int input_top_bit_set(struct input_ctx *); 173 static int input_end_bel(struct input_ctx *); 174 175 /* Command table comparison function. */ 176 static int input_table_compare(const void *, const void *); 177 178 /* Command table entry. */ 179 struct input_table_entry { 180 int ch; 181 const char *interm; 182 int type; 183 }; 184 185 /* Escape commands. */ 186 enum input_esc_type { 187 INPUT_ESC_DECALN, 188 INPUT_ESC_DECKPAM, 189 INPUT_ESC_DECKPNM, 190 INPUT_ESC_DECRC, 191 INPUT_ESC_DECSC, 192 INPUT_ESC_HTS, 193 INPUT_ESC_IND, 194 INPUT_ESC_NEL, 195 INPUT_ESC_RI, 196 INPUT_ESC_RIS, 197 INPUT_ESC_SCSG0_OFF, 198 INPUT_ESC_SCSG0_ON, 199 INPUT_ESC_SCSG1_OFF, 200 INPUT_ESC_SCSG1_ON, 201 INPUT_ESC_ST, 202 }; 203 204 /* Escape command table. */ 205 static const struct input_table_entry input_esc_table[] = { 206 { '0', "(", INPUT_ESC_SCSG0_ON }, 207 { '0', ")", INPUT_ESC_SCSG1_ON }, 208 { '7', "", INPUT_ESC_DECSC }, 209 { '8', "", INPUT_ESC_DECRC }, 210 { '8', "#", INPUT_ESC_DECALN }, 211 { '=', "", INPUT_ESC_DECKPAM }, 212 { '>', "", INPUT_ESC_DECKPNM }, 213 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 214 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 215 { 'D', "", INPUT_ESC_IND }, 216 { 'E', "", INPUT_ESC_NEL }, 217 { 'H', "", INPUT_ESC_HTS }, 218 { 'M', "", INPUT_ESC_RI }, 219 { '\\', "", INPUT_ESC_ST }, 220 { 'c', "", INPUT_ESC_RIS }, 221 }; 222 223 /* Control (CSI) commands. */ 224 enum input_csi_type { 225 INPUT_CSI_CBT, 226 INPUT_CSI_CNL, 227 INPUT_CSI_CPL, 228 INPUT_CSI_CUB, 229 INPUT_CSI_CUD, 230 INPUT_CSI_CUF, 231 INPUT_CSI_CUP, 232 INPUT_CSI_CUU, 233 INPUT_CSI_DA, 234 INPUT_CSI_DA_TWO, 235 INPUT_CSI_DCH, 236 INPUT_CSI_DECSCUSR, 237 INPUT_CSI_DECSTBM, 238 INPUT_CSI_DL, 239 INPUT_CSI_DSR, 240 INPUT_CSI_ECH, 241 INPUT_CSI_ED, 242 INPUT_CSI_EL, 243 INPUT_CSI_HPA, 244 INPUT_CSI_ICH, 245 INPUT_CSI_IL, 246 INPUT_CSI_MODOFF, 247 INPUT_CSI_MODSET, 248 INPUT_CSI_RCP, 249 INPUT_CSI_REP, 250 INPUT_CSI_RM, 251 INPUT_CSI_RM_PRIVATE, 252 INPUT_CSI_SCP, 253 INPUT_CSI_SD, 254 INPUT_CSI_SGR, 255 INPUT_CSI_SM, 256 INPUT_CSI_SM_PRIVATE, 257 INPUT_CSI_SU, 258 INPUT_CSI_TBC, 259 INPUT_CSI_VPA, 260 INPUT_CSI_WINOPS, 261 INPUT_CSI_XDA, 262 }; 263 264 /* Control (CSI) command table. */ 265 static const struct input_table_entry input_csi_table[] = { 266 { '@', "", INPUT_CSI_ICH }, 267 { 'A', "", INPUT_CSI_CUU }, 268 { 'B', "", INPUT_CSI_CUD }, 269 { 'C', "", INPUT_CSI_CUF }, 270 { 'D', "", INPUT_CSI_CUB }, 271 { 'E', "", INPUT_CSI_CNL }, 272 { 'F', "", INPUT_CSI_CPL }, 273 { 'G', "", INPUT_CSI_HPA }, 274 { 'H', "", INPUT_CSI_CUP }, 275 { 'J', "", INPUT_CSI_ED }, 276 { 'K', "", INPUT_CSI_EL }, 277 { 'L', "", INPUT_CSI_IL }, 278 { 'M', "", INPUT_CSI_DL }, 279 { 'P', "", INPUT_CSI_DCH }, 280 { 'S', "", INPUT_CSI_SU }, 281 { 'T', "", INPUT_CSI_SD }, 282 { 'X', "", INPUT_CSI_ECH }, 283 { 'Z', "", INPUT_CSI_CBT }, 284 { '`', "", INPUT_CSI_HPA }, 285 { 'b', "", INPUT_CSI_REP }, 286 { 'c', "", INPUT_CSI_DA }, 287 { 'c', ">", INPUT_CSI_DA_TWO }, 288 { 'd', "", INPUT_CSI_VPA }, 289 { 'f', "", INPUT_CSI_CUP }, 290 { 'g', "", INPUT_CSI_TBC }, 291 { 'h', "", INPUT_CSI_SM }, 292 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 293 { 'l', "", INPUT_CSI_RM }, 294 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 295 { 'm', "", INPUT_CSI_SGR }, 296 { 'm', ">", INPUT_CSI_MODSET }, 297 { 'n', "", INPUT_CSI_DSR }, 298 { 'n', ">", INPUT_CSI_MODOFF }, 299 { 'q', " ", INPUT_CSI_DECSCUSR }, 300 { 'q', ">", INPUT_CSI_XDA }, 301 { 'r', "", INPUT_CSI_DECSTBM }, 302 { 's', "", INPUT_CSI_SCP }, 303 { 't', "", INPUT_CSI_WINOPS }, 304 { 'u', "", INPUT_CSI_RCP }, 305 }; 306 307 /* Input transition. */ 308 struct input_transition { 309 int first; 310 int last; 311 312 int (*handler)(struct input_ctx *); 313 const struct input_state *state; 314 }; 315 316 /* Input state. */ 317 struct input_state { 318 const char *name; 319 void (*enter)(struct input_ctx *); 320 void (*exit)(struct input_ctx *); 321 const struct input_transition *transitions; 322 }; 323 324 /* State transitions available from all states. */ 325 #define INPUT_STATE_ANYWHERE \ 326 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 327 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 328 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 329 330 /* Forward declarations of state tables. */ 331 static const struct input_transition input_state_ground_table[]; 332 static const struct input_transition input_state_esc_enter_table[]; 333 static const struct input_transition input_state_esc_intermediate_table[]; 334 static const struct input_transition input_state_csi_enter_table[]; 335 static const struct input_transition input_state_csi_parameter_table[]; 336 static const struct input_transition input_state_csi_intermediate_table[]; 337 static const struct input_transition input_state_csi_ignore_table[]; 338 static const struct input_transition input_state_dcs_enter_table[]; 339 static const struct input_transition input_state_dcs_parameter_table[]; 340 static const struct input_transition input_state_dcs_intermediate_table[]; 341 static const struct input_transition input_state_dcs_handler_table[]; 342 static const struct input_transition input_state_dcs_escape_table[]; 343 static const struct input_transition input_state_dcs_ignore_table[]; 344 static const struct input_transition input_state_osc_string_table[]; 345 static const struct input_transition input_state_apc_string_table[]; 346 static const struct input_transition input_state_rename_string_table[]; 347 static const struct input_transition input_state_consume_st_table[]; 348 349 /* ground state definition. */ 350 static const struct input_state input_state_ground = { 351 "ground", 352 input_ground, NULL, 353 input_state_ground_table 354 }; 355 356 /* esc_enter state definition. */ 357 static const struct input_state input_state_esc_enter = { 358 "esc_enter", 359 input_clear, NULL, 360 input_state_esc_enter_table 361 }; 362 363 /* esc_intermediate state definition. */ 364 static const struct input_state input_state_esc_intermediate = { 365 "esc_intermediate", 366 NULL, NULL, 367 input_state_esc_intermediate_table 368 }; 369 370 /* csi_enter state definition. */ 371 static const struct input_state input_state_csi_enter = { 372 "csi_enter", 373 input_clear, NULL, 374 input_state_csi_enter_table 375 }; 376 377 /* csi_parameter state definition. */ 378 static const struct input_state input_state_csi_parameter = { 379 "csi_parameter", 380 NULL, NULL, 381 input_state_csi_parameter_table 382 }; 383 384 /* csi_intermediate state definition. */ 385 static const struct input_state input_state_csi_intermediate = { 386 "csi_intermediate", 387 NULL, NULL, 388 input_state_csi_intermediate_table 389 }; 390 391 /* csi_ignore state definition. */ 392 static const struct input_state input_state_csi_ignore = { 393 "csi_ignore", 394 NULL, NULL, 395 input_state_csi_ignore_table 396 }; 397 398 /* dcs_enter state definition. */ 399 static const struct input_state input_state_dcs_enter = { 400 "dcs_enter", 401 input_enter_dcs, NULL, 402 input_state_dcs_enter_table 403 }; 404 405 /* dcs_parameter state definition. */ 406 static const struct input_state input_state_dcs_parameter = { 407 "dcs_parameter", 408 NULL, NULL, 409 input_state_dcs_parameter_table 410 }; 411 412 /* dcs_intermediate state definition. */ 413 static const struct input_state input_state_dcs_intermediate = { 414 "dcs_intermediate", 415 NULL, NULL, 416 input_state_dcs_intermediate_table 417 }; 418 419 /* dcs_handler state definition. */ 420 static const struct input_state input_state_dcs_handler = { 421 "dcs_handler", 422 NULL, NULL, 423 input_state_dcs_handler_table 424 }; 425 426 /* dcs_escape state definition. */ 427 static const struct input_state input_state_dcs_escape = { 428 "dcs_escape", 429 NULL, NULL, 430 input_state_dcs_escape_table 431 }; 432 433 /* dcs_ignore state definition. */ 434 static const struct input_state input_state_dcs_ignore = { 435 "dcs_ignore", 436 NULL, NULL, 437 input_state_dcs_ignore_table 438 }; 439 440 /* osc_string state definition. */ 441 static const struct input_state input_state_osc_string = { 442 "osc_string", 443 input_enter_osc, input_exit_osc, 444 input_state_osc_string_table 445 }; 446 447 /* apc_string state definition. */ 448 static const struct input_state input_state_apc_string = { 449 "apc_string", 450 input_enter_apc, input_exit_apc, 451 input_state_apc_string_table 452 }; 453 454 /* rename_string state definition. */ 455 static const struct input_state input_state_rename_string = { 456 "rename_string", 457 input_enter_rename, input_exit_rename, 458 input_state_rename_string_table 459 }; 460 461 /* consume_st state definition. */ 462 static const struct input_state input_state_consume_st = { 463 "consume_st", 464 input_enter_rename, NULL, /* rename also waits for ST */ 465 input_state_consume_st_table 466 }; 467 468 /* ground state table. */ 469 static const struct input_transition input_state_ground_table[] = { 470 INPUT_STATE_ANYWHERE, 471 472 { 0x00, 0x17, input_c0_dispatch, NULL }, 473 { 0x19, 0x19, input_c0_dispatch, NULL }, 474 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 475 { 0x20, 0x7e, input_print, NULL }, 476 { 0x7f, 0x7f, NULL, NULL }, 477 { 0x80, 0xff, input_top_bit_set, NULL }, 478 479 { -1, -1, NULL, NULL } 480 }; 481 482 /* esc_enter state table. */ 483 static const struct input_transition input_state_esc_enter_table[] = { 484 INPUT_STATE_ANYWHERE, 485 486 { 0x00, 0x17, input_c0_dispatch, NULL }, 487 { 0x19, 0x19, input_c0_dispatch, NULL }, 488 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 489 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 490 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 491 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 492 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 493 { 0x58, 0x58, NULL, &input_state_consume_st }, 494 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 495 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 496 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 497 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 498 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 499 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 500 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 501 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 502 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 503 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 504 { 0x7f, 0xff, NULL, NULL }, 505 506 { -1, -1, NULL, NULL } 507 }; 508 509 /* esc_intermediate state table. */ 510 static const struct input_transition input_state_esc_intermediate_table[] = { 511 INPUT_STATE_ANYWHERE, 512 513 { 0x00, 0x17, input_c0_dispatch, NULL }, 514 { 0x19, 0x19, input_c0_dispatch, NULL }, 515 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 516 { 0x20, 0x2f, input_intermediate, NULL }, 517 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 518 { 0x7f, 0xff, NULL, NULL }, 519 520 { -1, -1, NULL, NULL } 521 }; 522 523 /* csi_enter state table. */ 524 static const struct input_transition input_state_csi_enter_table[] = { 525 INPUT_STATE_ANYWHERE, 526 527 { 0x00, 0x17, input_c0_dispatch, NULL }, 528 { 0x19, 0x19, input_c0_dispatch, NULL }, 529 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 530 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 531 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 532 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 533 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 534 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 535 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 536 { 0x7f, 0xff, NULL, NULL }, 537 538 { -1, -1, NULL, NULL } 539 }; 540 541 /* csi_parameter state table. */ 542 static const struct input_transition input_state_csi_parameter_table[] = { 543 INPUT_STATE_ANYWHERE, 544 545 { 0x00, 0x17, input_c0_dispatch, NULL }, 546 { 0x19, 0x19, input_c0_dispatch, NULL }, 547 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 548 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 549 { 0x30, 0x39, input_parameter, NULL }, 550 { 0x3a, 0x3a, input_parameter, NULL }, 551 { 0x3b, 0x3b, input_parameter, NULL }, 552 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 553 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 554 { 0x7f, 0xff, NULL, NULL }, 555 556 { -1, -1, NULL, NULL } 557 }; 558 559 /* csi_intermediate state table. */ 560 static const struct input_transition input_state_csi_intermediate_table[] = { 561 INPUT_STATE_ANYWHERE, 562 563 { 0x00, 0x17, input_c0_dispatch, NULL }, 564 { 0x19, 0x19, input_c0_dispatch, NULL }, 565 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 566 { 0x20, 0x2f, input_intermediate, NULL }, 567 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 568 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 569 { 0x7f, 0xff, NULL, NULL }, 570 571 { -1, -1, NULL, NULL } 572 }; 573 574 /* csi_ignore state table. */ 575 static const struct input_transition input_state_csi_ignore_table[] = { 576 INPUT_STATE_ANYWHERE, 577 578 { 0x00, 0x17, input_c0_dispatch, NULL }, 579 { 0x19, 0x19, input_c0_dispatch, NULL }, 580 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 581 { 0x20, 0x3f, NULL, NULL }, 582 { 0x40, 0x7e, NULL, &input_state_ground }, 583 { 0x7f, 0xff, NULL, NULL }, 584 585 { -1, -1, NULL, NULL } 586 }; 587 588 /* dcs_enter state table. */ 589 static const struct input_transition input_state_dcs_enter_table[] = { 590 INPUT_STATE_ANYWHERE, 591 592 { 0x00, 0x17, NULL, NULL }, 593 { 0x19, 0x19, NULL, NULL }, 594 { 0x1c, 0x1f, NULL, NULL }, 595 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 596 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 597 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 598 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 599 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 600 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 601 { 0x7f, 0xff, NULL, NULL }, 602 603 { -1, -1, NULL, NULL } 604 }; 605 606 /* dcs_parameter state table. */ 607 static const struct input_transition input_state_dcs_parameter_table[] = { 608 INPUT_STATE_ANYWHERE, 609 610 { 0x00, 0x17, NULL, NULL }, 611 { 0x19, 0x19, NULL, NULL }, 612 { 0x1c, 0x1f, NULL, NULL }, 613 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 614 { 0x30, 0x39, input_parameter, NULL }, 615 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 616 { 0x3b, 0x3b, input_parameter, NULL }, 617 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 618 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 619 { 0x7f, 0xff, NULL, NULL }, 620 621 { -1, -1, NULL, NULL } 622 }; 623 624 /* dcs_intermediate state table. */ 625 static const struct input_transition input_state_dcs_intermediate_table[] = { 626 INPUT_STATE_ANYWHERE, 627 628 { 0x00, 0x17, NULL, NULL }, 629 { 0x19, 0x19, NULL, NULL }, 630 { 0x1c, 0x1f, NULL, NULL }, 631 { 0x20, 0x2f, input_intermediate, NULL }, 632 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 633 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 634 { 0x7f, 0xff, NULL, NULL }, 635 636 { -1, -1, NULL, NULL } 637 }; 638 639 /* dcs_handler state table. */ 640 static const struct input_transition input_state_dcs_handler_table[] = { 641 /* No INPUT_STATE_ANYWHERE */ 642 643 { 0x00, 0x1a, input_input, NULL }, 644 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 645 { 0x1c, 0xff, input_input, NULL }, 646 647 { -1, -1, NULL, NULL } 648 }; 649 650 /* dcs_escape state table. */ 651 static const struct input_transition input_state_dcs_escape_table[] = { 652 /* No INPUT_STATE_ANYWHERE */ 653 654 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 655 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 656 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 657 658 { -1, -1, NULL, NULL } 659 }; 660 661 /* dcs_ignore state table. */ 662 static const struct input_transition input_state_dcs_ignore_table[] = { 663 INPUT_STATE_ANYWHERE, 664 665 { 0x00, 0x17, NULL, NULL }, 666 { 0x19, 0x19, NULL, NULL }, 667 { 0x1c, 0x1f, NULL, NULL }, 668 { 0x20, 0xff, NULL, NULL }, 669 670 { -1, -1, NULL, NULL } 671 }; 672 673 /* osc_string state table. */ 674 static const struct input_transition input_state_osc_string_table[] = { 675 INPUT_STATE_ANYWHERE, 676 677 { 0x00, 0x06, NULL, NULL }, 678 { 0x07, 0x07, input_end_bel, &input_state_ground }, 679 { 0x08, 0x17, NULL, NULL }, 680 { 0x19, 0x19, NULL, NULL }, 681 { 0x1c, 0x1f, NULL, NULL }, 682 { 0x20, 0xff, input_input, NULL }, 683 684 { -1, -1, NULL, NULL } 685 }; 686 687 /* apc_string state table. */ 688 static const struct input_transition input_state_apc_string_table[] = { 689 INPUT_STATE_ANYWHERE, 690 691 { 0x00, 0x17, NULL, NULL }, 692 { 0x19, 0x19, NULL, NULL }, 693 { 0x1c, 0x1f, NULL, NULL }, 694 { 0x20, 0xff, input_input, NULL }, 695 696 { -1, -1, NULL, NULL } 697 }; 698 699 /* rename_string state table. */ 700 static const struct input_transition input_state_rename_string_table[] = { 701 INPUT_STATE_ANYWHERE, 702 703 { 0x00, 0x17, NULL, NULL }, 704 { 0x19, 0x19, NULL, NULL }, 705 { 0x1c, 0x1f, NULL, NULL }, 706 { 0x20, 0xff, input_input, NULL }, 707 708 { -1, -1, NULL, NULL } 709 }; 710 711 /* consume_st state table. */ 712 static const struct input_transition input_state_consume_st_table[] = { 713 INPUT_STATE_ANYWHERE, 714 715 { 0x00, 0x17, NULL, NULL }, 716 { 0x19, 0x19, NULL, NULL }, 717 { 0x1c, 0x1f, NULL, NULL }, 718 { 0x20, 0xff, NULL, NULL }, 719 720 { -1, -1, NULL, NULL } 721 }; 722 723 /* Input table compare. */ 724 static int 725 input_table_compare(const void *key, const void *value) 726 { 727 const struct input_ctx *ictx = key; 728 const struct input_table_entry *entry = value; 729 730 if (ictx->ch != entry->ch) 731 return (ictx->ch - entry->ch); 732 return (strcmp(ictx->interm_buf, entry->interm)); 733 } 734 735 /* 736 * Timer - if this expires then have been waiting for a terminator for too 737 * long, so reset to ground. 738 */ 739 static void 740 input_timer_callback(__unused int fd, __unused short events, void *arg) 741 { 742 struct input_ctx *ictx = arg; 743 744 log_debug("%s: %s expired" , __func__, ictx->state->name); 745 input_reset(ictx, 0); 746 } 747 748 /* Start the timer. */ 749 static void 750 input_start_timer(struct input_ctx *ictx) 751 { 752 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 753 754 event_del(&ictx->timer); 755 event_add(&ictx->timer, &tv); 756 } 757 758 /* Reset cell state to default. */ 759 static void 760 input_reset_cell(struct input_ctx *ictx) 761 { 762 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 763 ictx->cell.set = 0; 764 ictx->cell.g0set = ictx->cell.g1set = 0; 765 766 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 767 ictx->old_cx = 0; 768 ictx->old_cy = 0; 769 } 770 771 /* Save screen state. */ 772 static void 773 input_save_state(struct input_ctx *ictx) 774 { 775 struct screen_write_ctx *sctx = &ictx->ctx; 776 struct screen *s = sctx->s; 777 778 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 779 ictx->old_cx = s->cx; 780 ictx->old_cy = s->cy; 781 ictx->old_mode = s->mode; 782 } 783 784 /* Restore screen state. */ 785 static void 786 input_restore_state(struct input_ctx *ictx) 787 { 788 struct screen_write_ctx *sctx = &ictx->ctx; 789 790 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 791 if (ictx->old_mode & MODE_ORIGIN) 792 screen_write_mode_set(sctx, MODE_ORIGIN); 793 else 794 screen_write_mode_clear(sctx, MODE_ORIGIN); 795 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 796 } 797 798 /* Initialise input parser. */ 799 struct input_ctx * 800 input_init(struct window_pane *wp, struct bufferevent *bev) 801 { 802 struct input_ctx *ictx; 803 804 ictx = xcalloc(1, sizeof *ictx); 805 ictx->wp = wp; 806 ictx->event = bev; 807 808 ictx->input_space = INPUT_BUF_START; 809 ictx->input_buf = xmalloc(INPUT_BUF_START); 810 811 ictx->since_ground = evbuffer_new(); 812 if (ictx->since_ground == NULL) 813 fatalx("out of memory"); 814 815 evtimer_set(&ictx->timer, input_timer_callback, ictx); 816 817 input_reset(ictx, 0); 818 return (ictx); 819 } 820 821 /* Destroy input parser. */ 822 void 823 input_free(struct input_ctx *ictx) 824 { 825 u_int i; 826 827 for (i = 0; i < ictx->param_list_len; i++) { 828 if (ictx->param_list[i].type == INPUT_STRING) 829 free(ictx->param_list[i].str); 830 } 831 832 event_del(&ictx->timer); 833 834 free(ictx->input_buf); 835 evbuffer_free(ictx->since_ground); 836 837 free(ictx); 838 } 839 840 /* Reset input state and clear screen. */ 841 void 842 input_reset(struct input_ctx *ictx, int clear) 843 { 844 struct screen_write_ctx *sctx = &ictx->ctx; 845 struct window_pane *wp = ictx->wp; 846 847 input_reset_cell(ictx); 848 849 if (clear && wp != NULL) { 850 if (TAILQ_EMPTY(&wp->modes)) 851 screen_write_start_pane(sctx, wp, &wp->base); 852 else 853 screen_write_start(sctx, &wp->base); 854 screen_write_reset(sctx); 855 screen_write_stop(sctx); 856 } 857 858 input_clear(ictx); 859 860 ictx->last = -1; 861 862 ictx->state = &input_state_ground; 863 ictx->flags = 0; 864 } 865 866 /* Return pending data. */ 867 struct evbuffer * 868 input_pending(struct input_ctx *ictx) 869 { 870 return (ictx->since_ground); 871 } 872 873 /* Change input state. */ 874 static void 875 input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 876 { 877 if (ictx->state->exit != NULL) 878 ictx->state->exit(ictx); 879 ictx->state = itr->state; 880 if (ictx->state->enter != NULL) 881 ictx->state->enter(ictx); 882 } 883 884 /* Parse data. */ 885 static void 886 input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 887 { 888 struct screen_write_ctx *sctx = &ictx->ctx; 889 const struct input_state *state = NULL; 890 const struct input_transition *itr = NULL; 891 size_t off = 0; 892 893 /* Parse the input. */ 894 while (off < len) { 895 ictx->ch = buf[off++]; 896 897 /* Find the transition. */ 898 if (ictx->state != state || 899 itr == NULL || 900 ictx->ch < itr->first || 901 ictx->ch > itr->last) { 902 itr = ictx->state->transitions; 903 while (itr->first != -1 && itr->last != -1) { 904 if (ictx->ch >= itr->first && 905 ictx->ch <= itr->last) 906 break; 907 itr++; 908 } 909 if (itr->first == -1 || itr->last == -1) { 910 /* No transition? Eh? */ 911 fatalx("no transition from state"); 912 } 913 } 914 state = ictx->state; 915 916 /* 917 * Any state except print stops the current collection. This is 918 * an optimization to avoid checking if the attributes have 919 * changed for every character. It will stop unnecessarily for 920 * sequences that don't make a terminal change, but they should 921 * be the minority. 922 */ 923 if (itr->handler != input_print) 924 screen_write_collect_end(sctx); 925 926 /* 927 * Execute the handler, if any. Don't switch state if it 928 * returns non-zero. 929 */ 930 if (itr->handler != NULL && itr->handler(ictx) != 0) 931 continue; 932 933 /* And switch state, if necessary. */ 934 if (itr->state != NULL) 935 input_set_state(ictx, itr); 936 937 /* If not in ground state, save input. */ 938 if (ictx->state != &input_state_ground) 939 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 940 } 941 } 942 943 /* Parse input from pane. */ 944 void 945 input_parse_pane(struct window_pane *wp) 946 { 947 void *new_data; 948 size_t new_size; 949 950 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 951 input_parse_buffer(wp, new_data, new_size); 952 window_pane_update_used_data(wp, &wp->offset, new_size); 953 } 954 955 /* Parse given input. */ 956 void 957 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 958 { 959 struct input_ctx *ictx = wp->ictx; 960 struct screen_write_ctx *sctx = &ictx->ctx; 961 962 if (len == 0) 963 return; 964 965 window_update_activity(wp->window); 966 wp->flags |= PANE_CHANGED; 967 968 /* NULL wp if there is a mode set as don't want to update the tty. */ 969 if (TAILQ_EMPTY(&wp->modes)) 970 screen_write_start_pane(sctx, wp, &wp->base); 971 else 972 screen_write_start(sctx, &wp->base); 973 974 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 975 ictx->state->name, len, (int)len, buf); 976 977 input_parse(ictx, buf, len); 978 screen_write_stop(sctx); 979 } 980 981 /* Parse given input for screen. */ 982 void 983 input_parse_screen(struct input_ctx *ictx, struct screen *s, 984 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 985 { 986 struct screen_write_ctx *sctx = &ictx->ctx; 987 988 if (len == 0) 989 return; 990 991 screen_write_start_callback(sctx, s, cb, arg); 992 input_parse(ictx, buf, len); 993 screen_write_stop(sctx); 994 } 995 996 /* Split the parameter list (if any). */ 997 static int 998 input_split(struct input_ctx *ictx) 999 { 1000 const char *errstr; 1001 char *ptr, *out; 1002 struct input_param *ip; 1003 u_int i; 1004 1005 for (i = 0; i < ictx->param_list_len; i++) { 1006 if (ictx->param_list[i].type == INPUT_STRING) 1007 free(ictx->param_list[i].str); 1008 } 1009 ictx->param_list_len = 0; 1010 1011 if (ictx->param_len == 0) 1012 return (0); 1013 ip = &ictx->param_list[0]; 1014 1015 ptr = ictx->param_buf; 1016 while ((out = strsep(&ptr, ";")) != NULL) { 1017 if (*out == '\0') 1018 ip->type = INPUT_MISSING; 1019 else { 1020 if (strchr(out, ':') != NULL) { 1021 ip->type = INPUT_STRING; 1022 ip->str = xstrdup(out); 1023 } else { 1024 ip->type = INPUT_NUMBER; 1025 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1026 if (errstr != NULL) 1027 return (-1); 1028 } 1029 } 1030 ip = &ictx->param_list[++ictx->param_list_len]; 1031 if (ictx->param_list_len == nitems(ictx->param_list)) 1032 return (-1); 1033 } 1034 1035 for (i = 0; i < ictx->param_list_len; i++) { 1036 ip = &ictx->param_list[i]; 1037 if (ip->type == INPUT_MISSING) 1038 log_debug("parameter %u: missing", i); 1039 else if (ip->type == INPUT_STRING) 1040 log_debug("parameter %u: string %s", i, ip->str); 1041 else if (ip->type == INPUT_NUMBER) 1042 log_debug("parameter %u: number %d", i, ip->num); 1043 } 1044 1045 return (0); 1046 } 1047 1048 /* Get an argument or return default value. */ 1049 static int 1050 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1051 { 1052 struct input_param *ip; 1053 int retval; 1054 1055 if (validx >= ictx->param_list_len) 1056 return (defval); 1057 ip = &ictx->param_list[validx]; 1058 if (ip->type == INPUT_MISSING) 1059 return (defval); 1060 if (ip->type == INPUT_STRING) 1061 return (-1); 1062 retval = ip->num; 1063 if (retval < minval) 1064 return (minval); 1065 return (retval); 1066 } 1067 1068 /* Reply to terminal query. */ 1069 static void 1070 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1071 { 1072 struct bufferevent *bev = ictx->event; 1073 va_list ap; 1074 char *reply; 1075 1076 va_start(ap, fmt); 1077 xvasprintf(&reply, fmt, ap); 1078 va_end(ap); 1079 1080 bufferevent_write(bev, reply, strlen(reply)); 1081 free(reply); 1082 } 1083 1084 /* Clear saved state. */ 1085 static void 1086 input_clear(struct input_ctx *ictx) 1087 { 1088 event_del(&ictx->timer); 1089 1090 *ictx->interm_buf = '\0'; 1091 ictx->interm_len = 0; 1092 1093 *ictx->param_buf = '\0'; 1094 ictx->param_len = 0; 1095 1096 *ictx->input_buf = '\0'; 1097 ictx->input_len = 0; 1098 1099 ictx->input_end = INPUT_END_ST; 1100 1101 ictx->flags &= ~INPUT_DISCARD; 1102 } 1103 1104 /* Reset for ground state. */ 1105 static void 1106 input_ground(struct input_ctx *ictx) 1107 { 1108 event_del(&ictx->timer); 1109 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1110 1111 if (ictx->input_space > INPUT_BUF_START) { 1112 ictx->input_space = INPUT_BUF_START; 1113 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1114 } 1115 } 1116 1117 /* Output this character to the screen. */ 1118 static int 1119 input_print(struct input_ctx *ictx) 1120 { 1121 struct screen_write_ctx *sctx = &ictx->ctx; 1122 int set; 1123 1124 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1125 1126 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1127 if (set == 1) 1128 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1129 else 1130 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1131 1132 utf8_set(&ictx->cell.cell.data, ictx->ch); 1133 screen_write_collect_add(sctx, &ictx->cell.cell); 1134 ictx->last = ictx->ch; 1135 1136 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1137 1138 return (0); 1139 } 1140 1141 /* Collect intermediate string. */ 1142 static int 1143 input_intermediate(struct input_ctx *ictx) 1144 { 1145 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1146 ictx->flags |= INPUT_DISCARD; 1147 else { 1148 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1149 ictx->interm_buf[ictx->interm_len] = '\0'; 1150 } 1151 1152 return (0); 1153 } 1154 1155 /* Collect parameter string. */ 1156 static int 1157 input_parameter(struct input_ctx *ictx) 1158 { 1159 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1160 ictx->flags |= INPUT_DISCARD; 1161 else { 1162 ictx->param_buf[ictx->param_len++] = ictx->ch; 1163 ictx->param_buf[ictx->param_len] = '\0'; 1164 } 1165 1166 return (0); 1167 } 1168 1169 /* Collect input string. */ 1170 static int 1171 input_input(struct input_ctx *ictx) 1172 { 1173 size_t available; 1174 1175 available = ictx->input_space; 1176 while (ictx->input_len + 1 >= available) { 1177 available *= 2; 1178 if (available > INPUT_BUF_LIMIT) { 1179 ictx->flags |= INPUT_DISCARD; 1180 return (0); 1181 } 1182 ictx->input_buf = xrealloc(ictx->input_buf, available); 1183 ictx->input_space = available; 1184 } 1185 ictx->input_buf[ictx->input_len++] = ictx->ch; 1186 ictx->input_buf[ictx->input_len] = '\0'; 1187 1188 return (0); 1189 } 1190 1191 /* Execute C0 control sequence. */ 1192 static int 1193 input_c0_dispatch(struct input_ctx *ictx) 1194 { 1195 struct screen_write_ctx *sctx = &ictx->ctx; 1196 struct window_pane *wp = ictx->wp; 1197 struct screen *s = sctx->s; 1198 1199 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1200 1201 log_debug("%s: '%c'", __func__, ictx->ch); 1202 1203 switch (ictx->ch) { 1204 case '\000': /* NUL */ 1205 break; 1206 case '\007': /* BEL */ 1207 if (wp != NULL) 1208 alerts_queue(wp->window, WINDOW_BELL); 1209 break; 1210 case '\010': /* BS */ 1211 screen_write_backspace(sctx); 1212 break; 1213 case '\011': /* HT */ 1214 /* Don't tab beyond the end of the line. */ 1215 if (s->cx >= screen_size_x(s) - 1) 1216 break; 1217 1218 /* Find the next tab point, or use the last column if none. */ 1219 do { 1220 s->cx++; 1221 if (bit_test(s->tabs, s->cx)) 1222 break; 1223 } while (s->cx < screen_size_x(s) - 1); 1224 break; 1225 case '\012': /* LF */ 1226 case '\013': /* VT */ 1227 case '\014': /* FF */ 1228 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1229 if (s->mode & MODE_CRLF) 1230 screen_write_carriagereturn(sctx); 1231 break; 1232 case '\015': /* CR */ 1233 screen_write_carriagereturn(sctx); 1234 break; 1235 case '\016': /* SO */ 1236 ictx->cell.set = 1; 1237 break; 1238 case '\017': /* SI */ 1239 ictx->cell.set = 0; 1240 break; 1241 default: 1242 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1243 break; 1244 } 1245 1246 ictx->last = -1; 1247 return (0); 1248 } 1249 1250 /* Execute escape sequence. */ 1251 static int 1252 input_esc_dispatch(struct input_ctx *ictx) 1253 { 1254 struct screen_write_ctx *sctx = &ictx->ctx; 1255 struct window_pane *wp = ictx->wp; 1256 struct screen *s = sctx->s; 1257 struct input_table_entry *entry; 1258 1259 if (ictx->flags & INPUT_DISCARD) 1260 return (0); 1261 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1262 1263 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1264 sizeof input_esc_table[0], input_table_compare); 1265 if (entry == NULL) { 1266 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1267 return (0); 1268 } 1269 1270 switch (entry->type) { 1271 case INPUT_ESC_RIS: 1272 if (wp != NULL) 1273 window_pane_reset_palette(wp); 1274 input_reset_cell(ictx); 1275 screen_write_reset(sctx); 1276 break; 1277 case INPUT_ESC_IND: 1278 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1279 break; 1280 case INPUT_ESC_NEL: 1281 screen_write_carriagereturn(sctx); 1282 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1283 break; 1284 case INPUT_ESC_HTS: 1285 if (s->cx < screen_size_x(s)) 1286 bit_set(s->tabs, s->cx); 1287 break; 1288 case INPUT_ESC_RI: 1289 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1290 break; 1291 case INPUT_ESC_DECKPAM: 1292 screen_write_mode_set(sctx, MODE_KKEYPAD); 1293 break; 1294 case INPUT_ESC_DECKPNM: 1295 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1296 break; 1297 case INPUT_ESC_DECSC: 1298 input_save_state(ictx); 1299 break; 1300 case INPUT_ESC_DECRC: 1301 input_restore_state(ictx); 1302 break; 1303 case INPUT_ESC_DECALN: 1304 screen_write_alignmenttest(sctx); 1305 break; 1306 case INPUT_ESC_SCSG0_ON: 1307 ictx->cell.g0set = 1; 1308 break; 1309 case INPUT_ESC_SCSG0_OFF: 1310 ictx->cell.g0set = 0; 1311 break; 1312 case INPUT_ESC_SCSG1_ON: 1313 ictx->cell.g1set = 1; 1314 break; 1315 case INPUT_ESC_SCSG1_OFF: 1316 ictx->cell.g1set = 0; 1317 break; 1318 case INPUT_ESC_ST: 1319 /* ST terminates OSC but the state transition already did it. */ 1320 break; 1321 } 1322 1323 ictx->last = -1; 1324 return (0); 1325 } 1326 1327 /* Execute control sequence. */ 1328 static int 1329 input_csi_dispatch(struct input_ctx *ictx) 1330 { 1331 struct screen_write_ctx *sctx = &ictx->ctx; 1332 struct screen *s = sctx->s; 1333 struct input_table_entry *entry; 1334 int i, n, m; 1335 u_int cx, bg = ictx->cell.cell.bg; 1336 1337 if (ictx->flags & INPUT_DISCARD) 1338 return (0); 1339 1340 log_debug("%s: '%c' \"%s\" \"%s\"", 1341 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1342 1343 if (input_split(ictx) != 0) 1344 return (0); 1345 1346 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1347 sizeof input_csi_table[0], input_table_compare); 1348 if (entry == NULL) { 1349 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1350 return (0); 1351 } 1352 1353 switch (entry->type) { 1354 case INPUT_CSI_CBT: 1355 /* Find the previous tab point, n times. */ 1356 cx = s->cx; 1357 if (cx > screen_size_x(s) - 1) 1358 cx = screen_size_x(s) - 1; 1359 n = input_get(ictx, 0, 1, 1); 1360 if (n == -1) 1361 break; 1362 while (cx > 0 && n-- > 0) { 1363 do 1364 cx--; 1365 while (cx > 0 && !bit_test(s->tabs, cx)); 1366 } 1367 s->cx = cx; 1368 break; 1369 case INPUT_CSI_CUB: 1370 n = input_get(ictx, 0, 1, 1); 1371 if (n != -1) 1372 screen_write_cursorleft(sctx, n); 1373 break; 1374 case INPUT_CSI_CUD: 1375 n = input_get(ictx, 0, 1, 1); 1376 if (n != -1) 1377 screen_write_cursordown(sctx, n); 1378 break; 1379 case INPUT_CSI_CUF: 1380 n = input_get(ictx, 0, 1, 1); 1381 if (n != -1) 1382 screen_write_cursorright(sctx, n); 1383 break; 1384 case INPUT_CSI_CUP: 1385 n = input_get(ictx, 0, 1, 1); 1386 m = input_get(ictx, 1, 1, 1); 1387 if (n != -1 && m != -1) 1388 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1389 break; 1390 case INPUT_CSI_MODSET: 1391 n = input_get(ictx, 0, 0, 0); 1392 m = input_get(ictx, 1, 0, 0); 1393 if (options_get_number(global_options, "extended-keys") == 2) 1394 break; 1395 if (n == 0 || (n == 4 && m == 0)) 1396 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1397 else if (n == 4 && (m == 1 || m == 2)) 1398 screen_write_mode_set(sctx, MODE_KEXTENDED); 1399 break; 1400 case INPUT_CSI_MODOFF: 1401 n = input_get(ictx, 0, 0, 0); 1402 if (n == 4) 1403 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1404 break; 1405 case INPUT_CSI_WINOPS: 1406 input_csi_dispatch_winops(ictx); 1407 break; 1408 case INPUT_CSI_CUU: 1409 n = input_get(ictx, 0, 1, 1); 1410 if (n != -1) 1411 screen_write_cursorup(sctx, n); 1412 break; 1413 case INPUT_CSI_CNL: 1414 n = input_get(ictx, 0, 1, 1); 1415 if (n != -1) { 1416 screen_write_carriagereturn(sctx); 1417 screen_write_cursordown(sctx, n); 1418 } 1419 break; 1420 case INPUT_CSI_CPL: 1421 n = input_get(ictx, 0, 1, 1); 1422 if (n != -1) { 1423 screen_write_carriagereturn(sctx); 1424 screen_write_cursorup(sctx, n); 1425 } 1426 break; 1427 case INPUT_CSI_DA: 1428 switch (input_get(ictx, 0, 0, 0)) { 1429 case -1: 1430 break; 1431 case 0: 1432 input_reply(ictx, "\033[?1;2c"); 1433 break; 1434 default: 1435 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1436 break; 1437 } 1438 break; 1439 case INPUT_CSI_DA_TWO: 1440 switch (input_get(ictx, 0, 0, 0)) { 1441 case -1: 1442 break; 1443 case 0: 1444 input_reply(ictx, "\033[>84;0;0c"); 1445 break; 1446 default: 1447 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1448 break; 1449 } 1450 break; 1451 case INPUT_CSI_ECH: 1452 n = input_get(ictx, 0, 1, 1); 1453 if (n != -1) 1454 screen_write_clearcharacter(sctx, n, bg); 1455 break; 1456 case INPUT_CSI_DCH: 1457 n = input_get(ictx, 0, 1, 1); 1458 if (n != -1) 1459 screen_write_deletecharacter(sctx, n, bg); 1460 break; 1461 case INPUT_CSI_DECSTBM: 1462 n = input_get(ictx, 0, 1, 1); 1463 m = input_get(ictx, 1, 1, screen_size_y(s)); 1464 if (n != -1 && m != -1) 1465 screen_write_scrollregion(sctx, n - 1, m - 1); 1466 break; 1467 case INPUT_CSI_DL: 1468 n = input_get(ictx, 0, 1, 1); 1469 if (n != -1) 1470 screen_write_deleteline(sctx, n, bg); 1471 break; 1472 case INPUT_CSI_DSR: 1473 switch (input_get(ictx, 0, 0, 0)) { 1474 case -1: 1475 break; 1476 case 5: 1477 input_reply(ictx, "\033[0n"); 1478 break; 1479 case 6: 1480 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1481 break; 1482 default: 1483 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1484 break; 1485 } 1486 break; 1487 case INPUT_CSI_ED: 1488 switch (input_get(ictx, 0, 0, 0)) { 1489 case -1: 1490 break; 1491 case 0: 1492 screen_write_clearendofscreen(sctx, bg); 1493 break; 1494 case 1: 1495 screen_write_clearstartofscreen(sctx, bg); 1496 break; 1497 case 2: 1498 screen_write_clearscreen(sctx, bg); 1499 break; 1500 case 3: 1501 if (input_get(ictx, 1, 0, 0) == 0) { 1502 /* 1503 * Linux console extension to clear history 1504 * (for example before locking the screen). 1505 */ 1506 screen_write_clearhistory(sctx); 1507 } 1508 break; 1509 default: 1510 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1511 break; 1512 } 1513 break; 1514 case INPUT_CSI_EL: 1515 switch (input_get(ictx, 0, 0, 0)) { 1516 case -1: 1517 break; 1518 case 0: 1519 screen_write_clearendofline(sctx, bg); 1520 break; 1521 case 1: 1522 screen_write_clearstartofline(sctx, bg); 1523 break; 1524 case 2: 1525 screen_write_clearline(sctx, bg); 1526 break; 1527 default: 1528 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1529 break; 1530 } 1531 break; 1532 case INPUT_CSI_HPA: 1533 n = input_get(ictx, 0, 1, 1); 1534 if (n != -1) 1535 screen_write_cursormove(sctx, n - 1, -1, 1); 1536 break; 1537 case INPUT_CSI_ICH: 1538 n = input_get(ictx, 0, 1, 1); 1539 if (n != -1) 1540 screen_write_insertcharacter(sctx, n, bg); 1541 break; 1542 case INPUT_CSI_IL: 1543 n = input_get(ictx, 0, 1, 1); 1544 if (n != -1) 1545 screen_write_insertline(sctx, n, bg); 1546 break; 1547 case INPUT_CSI_REP: 1548 n = input_get(ictx, 0, 1, 1); 1549 if (n == -1) 1550 break; 1551 1552 m = screen_size_x(s) - s->cx; 1553 if (n > m) 1554 n = m; 1555 1556 if (ictx->last == -1) 1557 break; 1558 ictx->ch = ictx->last; 1559 1560 for (i = 0; i < n; i++) 1561 input_print(ictx); 1562 break; 1563 case INPUT_CSI_RCP: 1564 input_restore_state(ictx); 1565 break; 1566 case INPUT_CSI_RM: 1567 input_csi_dispatch_rm(ictx); 1568 break; 1569 case INPUT_CSI_RM_PRIVATE: 1570 input_csi_dispatch_rm_private(ictx); 1571 break; 1572 case INPUT_CSI_SCP: 1573 input_save_state(ictx); 1574 break; 1575 case INPUT_CSI_SGR: 1576 input_csi_dispatch_sgr(ictx); 1577 break; 1578 case INPUT_CSI_SM: 1579 input_csi_dispatch_sm(ictx); 1580 break; 1581 case INPUT_CSI_SM_PRIVATE: 1582 input_csi_dispatch_sm_private(ictx); 1583 break; 1584 case INPUT_CSI_SU: 1585 n = input_get(ictx, 0, 1, 1); 1586 if (n != -1) 1587 screen_write_scrollup(sctx, n, bg); 1588 break; 1589 case INPUT_CSI_SD: 1590 n = input_get(ictx, 0, 1, 1); 1591 if (n != -1) 1592 screen_write_scrolldown(sctx, n, bg); 1593 break; 1594 case INPUT_CSI_TBC: 1595 switch (input_get(ictx, 0, 0, 0)) { 1596 case -1: 1597 break; 1598 case 0: 1599 if (s->cx < screen_size_x(s)) 1600 bit_clear(s->tabs, s->cx); 1601 break; 1602 case 3: 1603 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1604 break; 1605 default: 1606 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1607 break; 1608 } 1609 break; 1610 case INPUT_CSI_VPA: 1611 n = input_get(ictx, 0, 1, 1); 1612 if (n != -1) 1613 screen_write_cursormove(sctx, -1, n - 1, 1); 1614 break; 1615 case INPUT_CSI_DECSCUSR: 1616 n = input_get(ictx, 0, 0, 0); 1617 if (n != -1) 1618 screen_set_cursor_style(s, n); 1619 break; 1620 case INPUT_CSI_XDA: 1621 n = input_get(ictx, 0, 0, 0); 1622 if (n == 0) 1623 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1624 break; 1625 1626 } 1627 1628 ictx->last = -1; 1629 return (0); 1630 } 1631 1632 /* Handle CSI RM. */ 1633 static void 1634 input_csi_dispatch_rm(struct input_ctx *ictx) 1635 { 1636 struct screen_write_ctx *sctx = &ictx->ctx; 1637 u_int i; 1638 1639 for (i = 0; i < ictx->param_list_len; i++) { 1640 switch (input_get(ictx, i, 0, -1)) { 1641 case -1: 1642 break; 1643 case 4: /* IRM */ 1644 screen_write_mode_clear(sctx, MODE_INSERT); 1645 break; 1646 case 34: 1647 screen_write_mode_set(sctx, MODE_BLINKING); 1648 break; 1649 default: 1650 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1651 break; 1652 } 1653 } 1654 } 1655 1656 /* Handle CSI private RM. */ 1657 static void 1658 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1659 { 1660 struct screen_write_ctx *sctx = &ictx->ctx; 1661 struct grid_cell *gc = &ictx->cell.cell; 1662 u_int i; 1663 1664 for (i = 0; i < ictx->param_list_len; i++) { 1665 switch (input_get(ictx, i, 0, -1)) { 1666 case -1: 1667 break; 1668 case 1: /* DECCKM */ 1669 screen_write_mode_clear(sctx, MODE_KCURSOR); 1670 break; 1671 case 3: /* DECCOLM */ 1672 screen_write_cursormove(sctx, 0, 0, 1); 1673 screen_write_clearscreen(sctx, gc->bg); 1674 break; 1675 case 6: /* DECOM */ 1676 screen_write_mode_clear(sctx, MODE_ORIGIN); 1677 screen_write_cursormove(sctx, 0, 0, 1); 1678 break; 1679 case 7: /* DECAWM */ 1680 screen_write_mode_clear(sctx, MODE_WRAP); 1681 break; 1682 case 12: 1683 screen_write_mode_clear(sctx, MODE_BLINKING); 1684 break; 1685 case 25: /* TCEM */ 1686 screen_write_mode_clear(sctx, MODE_CURSOR); 1687 break; 1688 case 1000: 1689 case 1001: 1690 case 1002: 1691 case 1003: 1692 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1693 break; 1694 case 1004: 1695 screen_write_mode_clear(sctx, MODE_FOCUSON); 1696 break; 1697 case 1005: 1698 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1699 break; 1700 case 1006: 1701 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1702 break; 1703 case 47: 1704 case 1047: 1705 screen_write_alternateoff(sctx, gc, 0); 1706 break; 1707 case 1049: 1708 screen_write_alternateoff(sctx, gc, 1); 1709 break; 1710 case 2004: 1711 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1712 break; 1713 default: 1714 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1715 break; 1716 } 1717 } 1718 } 1719 1720 /* Handle CSI SM. */ 1721 static void 1722 input_csi_dispatch_sm(struct input_ctx *ictx) 1723 { 1724 struct screen_write_ctx *sctx = &ictx->ctx; 1725 u_int i; 1726 1727 for (i = 0; i < ictx->param_list_len; i++) { 1728 switch (input_get(ictx, i, 0, -1)) { 1729 case -1: 1730 break; 1731 case 4: /* IRM */ 1732 screen_write_mode_set(sctx, MODE_INSERT); 1733 break; 1734 case 34: 1735 screen_write_mode_clear(sctx, MODE_BLINKING); 1736 break; 1737 default: 1738 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1739 break; 1740 } 1741 } 1742 } 1743 1744 /* Handle CSI private SM. */ 1745 static void 1746 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1747 { 1748 struct screen_write_ctx *sctx = &ictx->ctx; 1749 struct window_pane *wp = ictx->wp; 1750 struct grid_cell *gc = &ictx->cell.cell; 1751 u_int i; 1752 1753 for (i = 0; i < ictx->param_list_len; i++) { 1754 switch (input_get(ictx, i, 0, -1)) { 1755 case -1: 1756 break; 1757 case 1: /* DECCKM */ 1758 screen_write_mode_set(sctx, MODE_KCURSOR); 1759 break; 1760 case 3: /* DECCOLM */ 1761 screen_write_cursormove(sctx, 0, 0, 1); 1762 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1763 break; 1764 case 6: /* DECOM */ 1765 screen_write_mode_set(sctx, MODE_ORIGIN); 1766 screen_write_cursormove(sctx, 0, 0, 1); 1767 break; 1768 case 7: /* DECAWM */ 1769 screen_write_mode_set(sctx, MODE_WRAP); 1770 break; 1771 case 12: 1772 screen_write_mode_set(sctx, MODE_BLINKING); 1773 break; 1774 case 25: /* TCEM */ 1775 screen_write_mode_set(sctx, MODE_CURSOR); 1776 break; 1777 case 1000: 1778 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1779 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1780 break; 1781 case 1002: 1782 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1783 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1784 break; 1785 case 1003: 1786 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1787 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1788 break; 1789 case 1004: 1790 if (sctx->s->mode & MODE_FOCUSON) 1791 break; 1792 screen_write_mode_set(sctx, MODE_FOCUSON); 1793 if (wp != NULL) 1794 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1795 break; 1796 case 1005: 1797 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1798 break; 1799 case 1006: 1800 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1801 break; 1802 case 47: 1803 case 1047: 1804 screen_write_alternateon(sctx, gc, 0); 1805 break; 1806 case 1049: 1807 screen_write_alternateon(sctx, gc, 1); 1808 break; 1809 case 2004: 1810 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1811 break; 1812 default: 1813 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1814 break; 1815 } 1816 } 1817 } 1818 1819 /* Handle CSI window operations. */ 1820 static void 1821 input_csi_dispatch_winops(struct input_ctx *ictx) 1822 { 1823 struct screen_write_ctx *sctx = &ictx->ctx; 1824 struct screen *s = sctx->s; 1825 struct window_pane *wp = ictx->wp; 1826 u_int x = screen_size_x(s), y = screen_size_y(s); 1827 int n, m; 1828 1829 m = 0; 1830 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1831 switch (n) { 1832 case 1: 1833 case 2: 1834 case 5: 1835 case 6: 1836 case 7: 1837 case 11: 1838 case 13: 1839 case 14: 1840 case 19: 1841 case 20: 1842 case 21: 1843 case 24: 1844 break; 1845 case 3: 1846 case 4: 1847 case 8: 1848 m++; 1849 if (input_get(ictx, m, 0, -1) == -1) 1850 return; 1851 /* FALLTHROUGH */ 1852 case 9: 1853 case 10: 1854 m++; 1855 if (input_get(ictx, m, 0, -1) == -1) 1856 return; 1857 break; 1858 case 22: 1859 m++; 1860 switch (input_get(ictx, m, 0, -1)) { 1861 case -1: 1862 return; 1863 case 0: 1864 case 2: 1865 screen_push_title(sctx->s); 1866 break; 1867 } 1868 break; 1869 case 23: 1870 m++; 1871 switch (input_get(ictx, m, 0, -1)) { 1872 case -1: 1873 return; 1874 case 0: 1875 case 2: 1876 screen_pop_title(sctx->s); 1877 if (wp != NULL) { 1878 notify_pane("pane-title-changed", wp); 1879 server_redraw_window_borders(wp->window); 1880 server_status_window(wp->window); 1881 } 1882 break; 1883 } 1884 break; 1885 case 18: 1886 input_reply(ictx, "\033[8;%u;%ut", x, y); 1887 break; 1888 default: 1889 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1890 break; 1891 } 1892 m++; 1893 } 1894 } 1895 1896 /* Helper for 256 colour SGR. */ 1897 static int 1898 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1899 { 1900 struct grid_cell *gc = &ictx->cell.cell; 1901 1902 if (c == -1 || c > 255) { 1903 if (fgbg == 38) 1904 gc->fg = 8; 1905 else if (fgbg == 48) 1906 gc->bg = 8; 1907 } else { 1908 if (fgbg == 38) 1909 gc->fg = c | COLOUR_FLAG_256; 1910 else if (fgbg == 48) 1911 gc->bg = c | COLOUR_FLAG_256; 1912 else if (fgbg == 58) 1913 gc->us = c | COLOUR_FLAG_256; 1914 } 1915 return (1); 1916 } 1917 1918 /* Handle CSI SGR for 256 colours. */ 1919 static void 1920 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1921 { 1922 int c; 1923 1924 c = input_get(ictx, (*i) + 1, 0, -1); 1925 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1926 (*i)++; 1927 } 1928 1929 /* Helper for RGB colour SGR. */ 1930 static int 1931 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1932 int b) 1933 { 1934 struct grid_cell *gc = &ictx->cell.cell; 1935 1936 if (r == -1 || r > 255) 1937 return (0); 1938 if (g == -1 || g > 255) 1939 return (0); 1940 if (b == -1 || b > 255) 1941 return (0); 1942 1943 if (fgbg == 38) 1944 gc->fg = colour_join_rgb(r, g, b); 1945 else if (fgbg == 48) 1946 gc->bg = colour_join_rgb(r, g, b); 1947 else if (fgbg == 58) 1948 gc->us = colour_join_rgb(r, g, b); 1949 return (1); 1950 } 1951 1952 /* Handle CSI SGR for RGB colours. */ 1953 static void 1954 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1955 { 1956 int r, g, b; 1957 1958 r = input_get(ictx, (*i) + 1, 0, -1); 1959 g = input_get(ictx, (*i) + 2, 0, -1); 1960 b = input_get(ictx, (*i) + 3, 0, -1); 1961 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1962 (*i) += 3; 1963 } 1964 1965 /* Handle CSI SGR with a ISO parameter. */ 1966 static void 1967 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1968 { 1969 struct grid_cell *gc = &ictx->cell.cell; 1970 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1971 int p[8]; 1972 u_int n; 1973 const char *errstr; 1974 1975 for (n = 0; n < nitems(p); n++) 1976 p[n] = -1; 1977 n = 0; 1978 1979 ptr = copy = xstrdup(s); 1980 while ((out = strsep(&ptr, ":")) != NULL) { 1981 if (*out != '\0') { 1982 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1983 if (errstr != NULL || n == nitems(p)) { 1984 free(copy); 1985 return; 1986 } 1987 } else { 1988 n++; 1989 if (n == nitems(p)) { 1990 free(copy); 1991 return; 1992 } 1993 } 1994 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1995 } 1996 free(copy); 1997 1998 if (n == 0) 1999 return; 2000 if (p[0] == 4) { 2001 if (n != 2) 2002 return; 2003 switch (p[1]) { 2004 case 0: 2005 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2006 break; 2007 case 1: 2008 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2009 gc->attr |= GRID_ATTR_UNDERSCORE; 2010 break; 2011 case 2: 2012 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2013 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2014 break; 2015 case 3: 2016 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2017 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2018 break; 2019 case 4: 2020 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2021 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2022 break; 2023 case 5: 2024 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2025 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2026 break; 2027 } 2028 return; 2029 } 2030 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2031 return; 2032 switch (p[1]) { 2033 case 2: 2034 if (n < 3) 2035 break; 2036 if (n == 5) 2037 i = 2; 2038 else 2039 i = 3; 2040 if (n < i + 3) 2041 break; 2042 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2043 p[i + 2]); 2044 break; 2045 case 5: 2046 if (n < 3) 2047 break; 2048 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2049 break; 2050 } 2051 } 2052 2053 /* Handle CSI SGR. */ 2054 static void 2055 input_csi_dispatch_sgr(struct input_ctx *ictx) 2056 { 2057 struct grid_cell *gc = &ictx->cell.cell; 2058 u_int i; 2059 int n; 2060 2061 if (ictx->param_list_len == 0) { 2062 memcpy(gc, &grid_default_cell, sizeof *gc); 2063 return; 2064 } 2065 2066 for (i = 0; i < ictx->param_list_len; i++) { 2067 if (ictx->param_list[i].type == INPUT_STRING) { 2068 input_csi_dispatch_sgr_colon(ictx, i); 2069 continue; 2070 } 2071 n = input_get(ictx, i, 0, 0); 2072 if (n == -1) 2073 continue; 2074 2075 if (n == 38 || n == 48 || n == 58) { 2076 i++; 2077 switch (input_get(ictx, i, 0, -1)) { 2078 case 2: 2079 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2080 break; 2081 case 5: 2082 input_csi_dispatch_sgr_256(ictx, n, &i); 2083 break; 2084 } 2085 continue; 2086 } 2087 2088 switch (n) { 2089 case 0: 2090 memcpy(gc, &grid_default_cell, sizeof *gc); 2091 break; 2092 case 1: 2093 gc->attr |= GRID_ATTR_BRIGHT; 2094 break; 2095 case 2: 2096 gc->attr |= GRID_ATTR_DIM; 2097 break; 2098 case 3: 2099 gc->attr |= GRID_ATTR_ITALICS; 2100 break; 2101 case 4: 2102 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2103 gc->attr |= GRID_ATTR_UNDERSCORE; 2104 break; 2105 case 5: 2106 case 6: 2107 gc->attr |= GRID_ATTR_BLINK; 2108 break; 2109 case 7: 2110 gc->attr |= GRID_ATTR_REVERSE; 2111 break; 2112 case 8: 2113 gc->attr |= GRID_ATTR_HIDDEN; 2114 break; 2115 case 9: 2116 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2117 break; 2118 case 21: 2119 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2120 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2121 break; 2122 case 22: 2123 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2124 break; 2125 case 23: 2126 gc->attr &= ~GRID_ATTR_ITALICS; 2127 break; 2128 case 24: 2129 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2130 break; 2131 case 25: 2132 gc->attr &= ~GRID_ATTR_BLINK; 2133 break; 2134 case 27: 2135 gc->attr &= ~GRID_ATTR_REVERSE; 2136 break; 2137 case 28: 2138 gc->attr &= ~GRID_ATTR_HIDDEN; 2139 break; 2140 case 29: 2141 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2142 break; 2143 case 30: 2144 case 31: 2145 case 32: 2146 case 33: 2147 case 34: 2148 case 35: 2149 case 36: 2150 case 37: 2151 gc->fg = n - 30; 2152 break; 2153 case 39: 2154 gc->fg = 8; 2155 break; 2156 case 40: 2157 case 41: 2158 case 42: 2159 case 43: 2160 case 44: 2161 case 45: 2162 case 46: 2163 case 47: 2164 gc->bg = n - 40; 2165 break; 2166 case 49: 2167 gc->bg = 8; 2168 break; 2169 case 53: 2170 gc->attr |= GRID_ATTR_OVERLINE; 2171 break; 2172 case 55: 2173 gc->attr &= ~GRID_ATTR_OVERLINE; 2174 break; 2175 case 59: 2176 gc->us = 0; 2177 break; 2178 case 90: 2179 case 91: 2180 case 92: 2181 case 93: 2182 case 94: 2183 case 95: 2184 case 96: 2185 case 97: 2186 gc->fg = n; 2187 break; 2188 case 100: 2189 case 101: 2190 case 102: 2191 case 103: 2192 case 104: 2193 case 105: 2194 case 106: 2195 case 107: 2196 gc->bg = n - 10; 2197 break; 2198 } 2199 } 2200 } 2201 2202 /* End of input with BEL. */ 2203 static int 2204 input_end_bel(struct input_ctx *ictx) 2205 { 2206 log_debug("%s", __func__); 2207 2208 ictx->input_end = INPUT_END_BEL; 2209 2210 return (0); 2211 } 2212 2213 /* DCS string started. */ 2214 static void 2215 input_enter_dcs(struct input_ctx *ictx) 2216 { 2217 log_debug("%s", __func__); 2218 2219 input_clear(ictx); 2220 input_start_timer(ictx); 2221 ictx->last = -1; 2222 } 2223 2224 /* DCS terminator (ST) received. */ 2225 static int 2226 input_dcs_dispatch(struct input_ctx *ictx) 2227 { 2228 struct screen_write_ctx *sctx = &ictx->ctx; 2229 u_char *buf = ictx->input_buf; 2230 size_t len = ictx->input_len; 2231 const char prefix[] = "tmux;"; 2232 const u_int prefixlen = (sizeof prefix) - 1; 2233 2234 if (ictx->flags & INPUT_DISCARD) 2235 return (0); 2236 2237 log_debug("%s: \"%s\"", __func__, buf); 2238 2239 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2240 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2241 2242 return (0); 2243 } 2244 2245 /* OSC string started. */ 2246 static void 2247 input_enter_osc(struct input_ctx *ictx) 2248 { 2249 log_debug("%s", __func__); 2250 2251 input_clear(ictx); 2252 input_start_timer(ictx); 2253 ictx->last = -1; 2254 } 2255 2256 /* OSC terminator (ST) received. */ 2257 static void 2258 input_exit_osc(struct input_ctx *ictx) 2259 { 2260 struct screen_write_ctx *sctx = &ictx->ctx; 2261 struct window_pane *wp = ictx->wp; 2262 u_char *p = ictx->input_buf; 2263 u_int option; 2264 2265 if (ictx->flags & INPUT_DISCARD) 2266 return; 2267 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2268 return; 2269 2270 log_debug("%s: \"%s\" (end %s)", __func__, p, 2271 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2272 2273 option = 0; 2274 while (*p >= '0' && *p <= '9') 2275 option = option * 10 + *p++ - '0'; 2276 if (*p == ';') 2277 p++; 2278 2279 switch (option) { 2280 case 0: 2281 case 2: 2282 if (screen_set_title(sctx->s, p) && wp != NULL) { 2283 notify_pane("pane-title-changed", wp); 2284 server_redraw_window_borders(wp->window); 2285 server_status_window(wp->window); 2286 } 2287 break; 2288 case 4: 2289 input_osc_4(ictx, p); 2290 break; 2291 case 7: 2292 if (utf8_isvalid(p)) { 2293 screen_set_path(sctx->s, p); 2294 if (wp != NULL) { 2295 server_redraw_window_borders(wp->window); 2296 server_status_window(wp->window); 2297 } 2298 } 2299 break; 2300 case 10: 2301 input_osc_10(ictx, p); 2302 break; 2303 case 11: 2304 input_osc_11(ictx, p); 2305 break; 2306 case 12: 2307 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2308 screen_set_cursor_colour(sctx->s, p); 2309 break; 2310 case 52: 2311 input_osc_52(ictx, p); 2312 break; 2313 case 104: 2314 input_osc_104(ictx, p); 2315 break; 2316 case 110: 2317 input_osc_110(ictx, p); 2318 break; 2319 case 111: 2320 input_osc_111(ictx, p); 2321 break; 2322 case 112: 2323 if (*p == '\0') /* no arguments allowed */ 2324 screen_set_cursor_colour(sctx->s, ""); 2325 break; 2326 default: 2327 log_debug("%s: unknown '%u'", __func__, option); 2328 break; 2329 } 2330 } 2331 2332 /* APC string started. */ 2333 static void 2334 input_enter_apc(struct input_ctx *ictx) 2335 { 2336 log_debug("%s", __func__); 2337 2338 input_clear(ictx); 2339 input_start_timer(ictx); 2340 ictx->last = -1; 2341 } 2342 2343 /* APC terminator (ST) received. */ 2344 static void 2345 input_exit_apc(struct input_ctx *ictx) 2346 { 2347 struct screen_write_ctx *sctx = &ictx->ctx; 2348 struct window_pane *wp = ictx->wp; 2349 2350 if (ictx->flags & INPUT_DISCARD) 2351 return; 2352 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2353 2354 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2355 notify_pane("pane-title-changed", wp); 2356 server_redraw_window_borders(wp->window); 2357 server_status_window(wp->window); 2358 } 2359 } 2360 2361 /* Rename string started. */ 2362 static void 2363 input_enter_rename(struct input_ctx *ictx) 2364 { 2365 log_debug("%s", __func__); 2366 2367 input_clear(ictx); 2368 input_start_timer(ictx); 2369 ictx->last = -1; 2370 } 2371 2372 /* Rename terminator (ST) received. */ 2373 static void 2374 input_exit_rename(struct input_ctx *ictx) 2375 { 2376 struct window_pane *wp = ictx->wp; 2377 struct options_entry *o; 2378 2379 if (wp == NULL) 2380 return; 2381 if (ictx->flags & INPUT_DISCARD) 2382 return; 2383 if (!options_get_number(ictx->wp->options, "allow-rename")) 2384 return; 2385 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2386 2387 if (!utf8_isvalid(ictx->input_buf)) 2388 return; 2389 2390 if (ictx->input_len == 0) { 2391 o = options_get_only(wp->window->options, "automatic-rename"); 2392 if (o != NULL) 2393 options_remove_or_default(o, -1, NULL); 2394 return; 2395 } 2396 window_set_name(wp->window, ictx->input_buf); 2397 options_set_number(wp->window->options, "automatic-rename", 0); 2398 server_redraw_window_borders(wp->window); 2399 server_status_window(wp->window); 2400 } 2401 2402 /* Open UTF-8 character. */ 2403 static int 2404 input_top_bit_set(struct input_ctx *ictx) 2405 { 2406 struct screen_write_ctx *sctx = &ictx->ctx; 2407 struct utf8_data *ud = &ictx->utf8data; 2408 2409 ictx->last = -1; 2410 2411 if (!ictx->utf8started) { 2412 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2413 return (0); 2414 ictx->utf8started = 1; 2415 return (0); 2416 } 2417 2418 switch (utf8_append(ud, ictx->ch)) { 2419 case UTF8_MORE: 2420 return (0); 2421 case UTF8_ERROR: 2422 ictx->utf8started = 0; 2423 return (0); 2424 case UTF8_DONE: 2425 break; 2426 } 2427 ictx->utf8started = 0; 2428 2429 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2430 (int)ud->size, ud->data, ud->width); 2431 2432 utf8_copy(&ictx->cell.cell.data, ud); 2433 screen_write_collect_add(sctx, &ictx->cell.cell); 2434 2435 return (0); 2436 } 2437 2438 /* Parse colour from OSC. */ 2439 static int 2440 input_osc_parse_colour(const char *p) 2441 { 2442 double c, m, y, k = 0; 2443 u_int r, g, b; 2444 size_t len = strlen(p); 2445 int colour = -1; 2446 char *copy; 2447 2448 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) || 2449 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) || 2450 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3) 2451 colour = colour_join_rgb(r, g, b); 2452 else if ((len == 18 && 2453 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) || 2454 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3)) 2455 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8); 2456 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 || 2457 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) && 2458 c >= 0 && c <= 1 && m >= 0 && m <= 1 && 2459 y >= 0 && y <= 1 && k >= 0 && k <= 1) { 2460 colour = colour_join_rgb( 2461 (1 - c) * (1 - k) * 255, 2462 (1 - m) * (1 - k) * 255, 2463 (1 - y) * (1 - k) * 255); 2464 } else { 2465 while (len != 0 && *p == ' ') { 2466 p++; 2467 len--; 2468 } 2469 while (len != 0 && p[len - 1] == ' ') 2470 len--; 2471 copy = xstrndup(p, len); 2472 colour = colour_byname(copy); 2473 free(copy); 2474 } 2475 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour)); 2476 return (colour); 2477 } 2478 2479 /* Reply to a colour request. */ 2480 static void 2481 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2482 { 2483 u_char r, g, b; 2484 const char *end; 2485 2486 if (c == 8 || (~c & COLOUR_FLAG_RGB)) 2487 return; 2488 colour_split_rgb(c, &r, &g, &b); 2489 2490 if (ictx->input_end == INPUT_END_BEL) 2491 end = "\007"; 2492 else 2493 end = "\033\\"; 2494 input_reply(ictx, "\033]%u;rgb:%02hhx/%02hhx/%02hhx%s", n, r, g, b, end); 2495 } 2496 2497 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2498 static void 2499 input_osc_4(struct input_ctx *ictx, const char *p) 2500 { 2501 struct window_pane *wp = ictx->wp; 2502 char *copy, *s, *next = NULL; 2503 long idx; 2504 int c; 2505 2506 if (wp == NULL) 2507 return; 2508 2509 copy = s = xstrdup(p); 2510 while (s != NULL && *s != '\0') { 2511 idx = strtol(s, &next, 10); 2512 if (*next++ != ';') 2513 goto bad; 2514 if (idx < 0 || idx >= 0x100) 2515 goto bad; 2516 2517 s = strsep(&next, ";"); 2518 if ((c = input_osc_parse_colour(s)) == -1) { 2519 s = next; 2520 continue; 2521 } 2522 2523 window_pane_set_palette(wp, idx, c); 2524 s = next; 2525 } 2526 2527 free(copy); 2528 return; 2529 2530 bad: 2531 log_debug("bad OSC 4: %s", p); 2532 free(copy); 2533 } 2534 2535 /* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2536 static void 2537 input_osc_10(struct input_ctx *ictx, const char *p) 2538 { 2539 struct window_pane *wp = ictx->wp; 2540 struct grid_cell defaults; 2541 int c; 2542 2543 if (wp == NULL) 2544 return; 2545 2546 if (strcmp(p, "?") == 0) { 2547 tty_default_colours(&defaults, wp); 2548 input_osc_colour_reply(ictx, 10, defaults.fg); 2549 return; 2550 } 2551 2552 if ((c = input_osc_parse_colour(p)) == -1) 2553 goto bad; 2554 wp->fg = c; 2555 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2556 2557 return; 2558 2559 bad: 2560 log_debug("bad OSC 10: %s", p); 2561 } 2562 2563 /* Handle the OSC 110 sequence for resetting background colour. */ 2564 static void 2565 input_osc_110(struct input_ctx *ictx, const char *p) 2566 { 2567 struct window_pane *wp = ictx->wp; 2568 2569 if (wp == NULL) 2570 return; 2571 2572 if (*p != '\0') 2573 return; 2574 2575 wp->fg = 8; 2576 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2577 } 2578 2579 /* Handle the OSC 11 sequence for setting and querying background colour. */ 2580 static void 2581 input_osc_11(struct input_ctx *ictx, const char *p) 2582 { 2583 struct window_pane *wp = ictx->wp; 2584 struct grid_cell defaults; 2585 int c; 2586 2587 if (wp == NULL) 2588 return; 2589 2590 if (strcmp(p, "?") == 0) { 2591 tty_default_colours(&defaults, wp); 2592 input_osc_colour_reply(ictx, 11, defaults.bg); 2593 return; 2594 } 2595 2596 if ((c = input_osc_parse_colour(p)) == -1) 2597 goto bad; 2598 wp->bg = c; 2599 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2600 2601 return; 2602 2603 bad: 2604 log_debug("bad OSC 11: %s", p); 2605 } 2606 2607 /* Handle the OSC 111 sequence for resetting background colour. */ 2608 static void 2609 input_osc_111(struct input_ctx *ictx, const char *p) 2610 { 2611 struct window_pane *wp = ictx->wp; 2612 2613 if (wp == NULL) 2614 return; 2615 2616 if (*p != '\0') 2617 return; 2618 2619 wp->bg = 8; 2620 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2621 } 2622 2623 /* Handle the OSC 52 sequence for setting the clipboard. */ 2624 static void 2625 input_osc_52(struct input_ctx *ictx, const char *p) 2626 { 2627 struct window_pane *wp = ictx->wp; 2628 char *end; 2629 const char *buf; 2630 size_t len; 2631 u_char *out; 2632 int outlen, state; 2633 struct screen_write_ctx ctx; 2634 struct paste_buffer *pb; 2635 2636 if (wp == NULL) 2637 return; 2638 state = options_get_number(global_options, "set-clipboard"); 2639 if (state != 2) 2640 return; 2641 2642 if ((end = strchr(p, ';')) == NULL) 2643 return; 2644 end++; 2645 if (*end == '\0') 2646 return; 2647 log_debug("%s: %s", __func__, end); 2648 2649 if (strcmp(end, "?") == 0) { 2650 if ((pb = paste_get_top(NULL)) != NULL) { 2651 buf = paste_buffer_data(pb, &len); 2652 outlen = 4 * ((len + 2) / 3) + 1; 2653 out = xmalloc(outlen); 2654 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2655 free(out); 2656 return; 2657 } 2658 } else { 2659 outlen = 0; 2660 out = NULL; 2661 } 2662 bufferevent_write(ictx->event, "\033]52;;", 6); 2663 if (outlen != 0) 2664 bufferevent_write(ictx->event, out, outlen); 2665 if (ictx->input_end == INPUT_END_BEL) 2666 bufferevent_write(ictx->event, "\007", 1); 2667 else 2668 bufferevent_write(ictx->event, "\033\\", 2); 2669 free(out); 2670 return; 2671 } 2672 2673 len = (strlen(end) / 4) * 3; 2674 if (len == 0) 2675 return; 2676 2677 out = xmalloc(len); 2678 if ((outlen = b64_pton(end, out, len)) == -1) { 2679 free(out); 2680 return; 2681 } 2682 2683 screen_write_start_pane(&ctx, wp, NULL); 2684 screen_write_setselection(&ctx, out, outlen); 2685 screen_write_stop(&ctx); 2686 notify_pane("pane-set-clipboard", wp); 2687 2688 paste_add(NULL, out, outlen); 2689 } 2690 2691 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2692 static void 2693 input_osc_104(struct input_ctx *ictx, const char *p) 2694 { 2695 struct window_pane *wp = ictx->wp; 2696 char *copy, *s; 2697 long idx; 2698 2699 if (wp == NULL) 2700 return; 2701 2702 if (*p == '\0') { 2703 window_pane_reset_palette(wp); 2704 return; 2705 } 2706 2707 copy = s = xstrdup(p); 2708 while (*s != '\0') { 2709 idx = strtol(s, &s, 10); 2710 if (*s != '\0' && *s != ';') 2711 goto bad; 2712 if (idx < 0 || idx >= 0x100) 2713 goto bad; 2714 2715 window_pane_unset_palette(wp, idx); 2716 if (*s == ';') 2717 s++; 2718 } 2719 free(copy); 2720 return; 2721 2722 bad: 2723 log_debug("bad OSC 104: %s", p); 2724 free(copy); 2725 } 2726