1 /* $OpenBSD: input.c,v 1.130 2018/01/12 16:32:12 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <netinet/in.h> 22 23 #include <resolv.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <time.h> 27 28 #include "tmux.h" 29 30 /* 31 * Based on the description by Paul Williams at: 32 * 33 * http://vt100.net/emu/dec_ansi_parser 34 * 35 * With the following changes: 36 * 37 * - 7-bit only. 38 * 39 * - Support for UTF-8. 40 * 41 * - OSC (but not APC) may be terminated by \007 as well as ST. 42 * 43 * - A state for APC similar to OSC. Some terminals appear to use this to set 44 * the title. 45 * 46 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 47 * pretty stupid but not supporting it is more trouble than it is worth. 48 * 49 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 50 * be passed to the underlying terminals. 51 */ 52 53 /* Input parser cell. */ 54 struct input_cell { 55 struct grid_cell cell; 56 int set; 57 int g0set; /* 1 if ACS */ 58 int g1set; /* 1 if ACS */ 59 }; 60 61 /* Input parser context. */ 62 struct input_ctx { 63 struct window_pane *wp; 64 struct screen_write_ctx ctx; 65 66 struct input_cell cell; 67 68 struct input_cell old_cell; 69 u_int old_cx; 70 u_int old_cy; 71 72 u_char interm_buf[4]; 73 size_t interm_len; 74 75 u_char param_buf[64]; 76 size_t param_len; 77 78 #define INPUT_BUF_START 32 79 #define INPUT_BUF_LIMIT 1048576 80 u_char *input_buf; 81 size_t input_len; 82 size_t input_space; 83 84 int param_list[24]; /* -1 not present */ 85 u_int param_list_len; 86 87 struct utf8_data utf8data; 88 int utf8started; 89 90 int ch; 91 int last; 92 93 int flags; 94 #define INPUT_DISCARD 0x1 95 96 const struct input_state *state; 97 98 struct event timer; 99 100 /* 101 * All input received since we were last in the ground state. Sent to 102 * control clients on connection. 103 */ 104 struct evbuffer *since_ground; 105 }; 106 107 /* Helper functions. */ 108 struct input_transition; 109 static int input_split(struct input_ctx *); 110 static int input_get(struct input_ctx *, u_int, int, int); 111 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 112 static void input_set_state(struct window_pane *, 113 const struct input_transition *); 114 static void input_reset_cell(struct input_ctx *); 115 116 static void input_osc_4(struct window_pane *, const char *); 117 static void input_osc_10(struct window_pane *, const char *); 118 static void input_osc_11(struct window_pane *, const char *); 119 static void input_osc_52(struct window_pane *, const char *); 120 static void input_osc_104(struct window_pane *, const char *); 121 122 /* Transition entry/exit handlers. */ 123 static void input_clear(struct input_ctx *); 124 static void input_ground(struct input_ctx *); 125 static void input_enter_dcs(struct input_ctx *); 126 static void input_enter_osc(struct input_ctx *); 127 static void input_exit_osc(struct input_ctx *); 128 static void input_enter_apc(struct input_ctx *); 129 static void input_exit_apc(struct input_ctx *); 130 static void input_enter_rename(struct input_ctx *); 131 static void input_exit_rename(struct input_ctx *); 132 133 /* Input state handlers. */ 134 static int input_print(struct input_ctx *); 135 static int input_intermediate(struct input_ctx *); 136 static int input_parameter(struct input_ctx *); 137 static int input_input(struct input_ctx *); 138 static int input_c0_dispatch(struct input_ctx *); 139 static int input_esc_dispatch(struct input_ctx *); 140 static int input_csi_dispatch(struct input_ctx *); 141 static void input_csi_dispatch_rm(struct input_ctx *); 142 static void input_csi_dispatch_rm_private(struct input_ctx *); 143 static void input_csi_dispatch_sm(struct input_ctx *); 144 static void input_csi_dispatch_sm_private(struct input_ctx *); 145 static void input_csi_dispatch_winops(struct input_ctx *); 146 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 147 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 148 static void input_csi_dispatch_sgr(struct input_ctx *); 149 static int input_dcs_dispatch(struct input_ctx *); 150 static int input_top_bit_set(struct input_ctx *); 151 152 /* Command table comparison function. */ 153 static int input_table_compare(const void *, const void *); 154 155 /* Command table entry. */ 156 struct input_table_entry { 157 int ch; 158 const char *interm; 159 int type; 160 }; 161 162 /* Escape commands. */ 163 enum input_esc_type { 164 INPUT_ESC_DECALN, 165 INPUT_ESC_DECKPAM, 166 INPUT_ESC_DECKPNM, 167 INPUT_ESC_DECRC, 168 INPUT_ESC_DECSC, 169 INPUT_ESC_HTS, 170 INPUT_ESC_IND, 171 INPUT_ESC_NEL, 172 INPUT_ESC_RI, 173 INPUT_ESC_RIS, 174 INPUT_ESC_SCSG0_OFF, 175 INPUT_ESC_SCSG0_ON, 176 INPUT_ESC_SCSG1_OFF, 177 INPUT_ESC_SCSG1_ON, 178 INPUT_ESC_ST, 179 }; 180 181 /* Escape command table. */ 182 static const struct input_table_entry input_esc_table[] = { 183 { '0', "(", INPUT_ESC_SCSG0_ON }, 184 { '0', ")", INPUT_ESC_SCSG1_ON }, 185 { '7', "", INPUT_ESC_DECSC }, 186 { '8', "", INPUT_ESC_DECRC }, 187 { '8', "#", INPUT_ESC_DECALN }, 188 { '=', "", INPUT_ESC_DECKPAM }, 189 { '>', "", INPUT_ESC_DECKPNM }, 190 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 191 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 192 { 'D', "", INPUT_ESC_IND }, 193 { 'E', "", INPUT_ESC_NEL }, 194 { 'H', "", INPUT_ESC_HTS }, 195 { 'M', "", INPUT_ESC_RI }, 196 { '\\', "", INPUT_ESC_ST }, 197 { 'c', "", INPUT_ESC_RIS }, 198 }; 199 200 /* Control (CSI) commands. */ 201 enum input_csi_type { 202 INPUT_CSI_CBT, 203 INPUT_CSI_CNL, 204 INPUT_CSI_CPL, 205 INPUT_CSI_CUB, 206 INPUT_CSI_CUD, 207 INPUT_CSI_CUF, 208 INPUT_CSI_CUP, 209 INPUT_CSI_CUU, 210 INPUT_CSI_DA, 211 INPUT_CSI_DA_TWO, 212 INPUT_CSI_DCH, 213 INPUT_CSI_DECSCUSR, 214 INPUT_CSI_DECSTBM, 215 INPUT_CSI_DL, 216 INPUT_CSI_DSR, 217 INPUT_CSI_ECH, 218 INPUT_CSI_ED, 219 INPUT_CSI_EL, 220 INPUT_CSI_HPA, 221 INPUT_CSI_ICH, 222 INPUT_CSI_IL, 223 INPUT_CSI_RCP, 224 INPUT_CSI_REP, 225 INPUT_CSI_RM, 226 INPUT_CSI_RM_PRIVATE, 227 INPUT_CSI_SCP, 228 INPUT_CSI_SGR, 229 INPUT_CSI_SM, 230 INPUT_CSI_SM_PRIVATE, 231 INPUT_CSI_SU, 232 INPUT_CSI_TBC, 233 INPUT_CSI_VPA, 234 INPUT_CSI_WINOPS, 235 }; 236 237 /* Control (CSI) command table. */ 238 static const struct input_table_entry input_csi_table[] = { 239 { '@', "", INPUT_CSI_ICH }, 240 { 'A', "", INPUT_CSI_CUU }, 241 { 'B', "", INPUT_CSI_CUD }, 242 { 'C', "", INPUT_CSI_CUF }, 243 { 'D', "", INPUT_CSI_CUB }, 244 { 'E', "", INPUT_CSI_CNL }, 245 { 'F', "", INPUT_CSI_CPL }, 246 { 'G', "", INPUT_CSI_HPA }, 247 { 'H', "", INPUT_CSI_CUP }, 248 { 'J', "", INPUT_CSI_ED }, 249 { 'K', "", INPUT_CSI_EL }, 250 { 'L', "", INPUT_CSI_IL }, 251 { 'M', "", INPUT_CSI_DL }, 252 { 'P', "", INPUT_CSI_DCH }, 253 { 'S', "", INPUT_CSI_SU }, 254 { 'X', "", INPUT_CSI_ECH }, 255 { 'Z', "", INPUT_CSI_CBT }, 256 { 'b', "", INPUT_CSI_REP }, 257 { 'c', "", INPUT_CSI_DA }, 258 { 'c', ">", INPUT_CSI_DA_TWO }, 259 { 'd', "", INPUT_CSI_VPA }, 260 { 'f', "", INPUT_CSI_CUP }, 261 { 'g', "", INPUT_CSI_TBC }, 262 { 'h', "", INPUT_CSI_SM }, 263 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 264 { 'l', "", INPUT_CSI_RM }, 265 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 266 { 'm', "", INPUT_CSI_SGR }, 267 { 'n', "", INPUT_CSI_DSR }, 268 { 'q', " ", INPUT_CSI_DECSCUSR }, 269 { 'r', "", INPUT_CSI_DECSTBM }, 270 { 's', "", INPUT_CSI_SCP }, 271 { 't', "", INPUT_CSI_WINOPS }, 272 { 'u', "", INPUT_CSI_RCP }, 273 }; 274 275 /* Input transition. */ 276 struct input_transition { 277 int first; 278 int last; 279 280 int (*handler)(struct input_ctx *); 281 const struct input_state *state; 282 }; 283 284 /* Input state. */ 285 struct input_state { 286 const char *name; 287 void (*enter)(struct input_ctx *); 288 void (*exit)(struct input_ctx *); 289 const struct input_transition *transitions; 290 }; 291 292 /* State transitions available from all states. */ 293 #define INPUT_STATE_ANYWHERE \ 294 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 295 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 296 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 297 298 /* Forward declarations of state tables. */ 299 static const struct input_transition input_state_ground_table[]; 300 static const struct input_transition input_state_esc_enter_table[]; 301 static const struct input_transition input_state_esc_intermediate_table[]; 302 static const struct input_transition input_state_csi_enter_table[]; 303 static const struct input_transition input_state_csi_parameter_table[]; 304 static const struct input_transition input_state_csi_intermediate_table[]; 305 static const struct input_transition input_state_csi_ignore_table[]; 306 static const struct input_transition input_state_dcs_enter_table[]; 307 static const struct input_transition input_state_dcs_parameter_table[]; 308 static const struct input_transition input_state_dcs_intermediate_table[]; 309 static const struct input_transition input_state_dcs_handler_table[]; 310 static const struct input_transition input_state_dcs_escape_table[]; 311 static const struct input_transition input_state_dcs_ignore_table[]; 312 static const struct input_transition input_state_osc_string_table[]; 313 static const struct input_transition input_state_apc_string_table[]; 314 static const struct input_transition input_state_rename_string_table[]; 315 static const struct input_transition input_state_consume_st_table[]; 316 317 /* ground state definition. */ 318 static const struct input_state input_state_ground = { 319 "ground", 320 input_ground, NULL, 321 input_state_ground_table 322 }; 323 324 /* esc_enter state definition. */ 325 static const struct input_state input_state_esc_enter = { 326 "esc_enter", 327 input_clear, NULL, 328 input_state_esc_enter_table 329 }; 330 331 /* esc_intermediate state definition. */ 332 static const struct input_state input_state_esc_intermediate = { 333 "esc_intermediate", 334 NULL, NULL, 335 input_state_esc_intermediate_table 336 }; 337 338 /* csi_enter state definition. */ 339 static const struct input_state input_state_csi_enter = { 340 "csi_enter", 341 input_clear, NULL, 342 input_state_csi_enter_table 343 }; 344 345 /* csi_parameter state definition. */ 346 static const struct input_state input_state_csi_parameter = { 347 "csi_parameter", 348 NULL, NULL, 349 input_state_csi_parameter_table 350 }; 351 352 /* csi_intermediate state definition. */ 353 static const struct input_state input_state_csi_intermediate = { 354 "csi_intermediate", 355 NULL, NULL, 356 input_state_csi_intermediate_table 357 }; 358 359 /* csi_ignore state definition. */ 360 static const struct input_state input_state_csi_ignore = { 361 "csi_ignore", 362 NULL, NULL, 363 input_state_csi_ignore_table 364 }; 365 366 /* dcs_enter state definition. */ 367 static const struct input_state input_state_dcs_enter = { 368 "dcs_enter", 369 input_enter_dcs, NULL, 370 input_state_dcs_enter_table 371 }; 372 373 /* dcs_parameter state definition. */ 374 static const struct input_state input_state_dcs_parameter = { 375 "dcs_parameter", 376 NULL, NULL, 377 input_state_dcs_parameter_table 378 }; 379 380 /* dcs_intermediate state definition. */ 381 static const struct input_state input_state_dcs_intermediate = { 382 "dcs_intermediate", 383 NULL, NULL, 384 input_state_dcs_intermediate_table 385 }; 386 387 /* dcs_handler state definition. */ 388 static const struct input_state input_state_dcs_handler = { 389 "dcs_handler", 390 NULL, NULL, 391 input_state_dcs_handler_table 392 }; 393 394 /* dcs_escape state definition. */ 395 static const struct input_state input_state_dcs_escape = { 396 "dcs_escape", 397 NULL, NULL, 398 input_state_dcs_escape_table 399 }; 400 401 /* dcs_ignore state definition. */ 402 static const struct input_state input_state_dcs_ignore = { 403 "dcs_ignore", 404 NULL, NULL, 405 input_state_dcs_ignore_table 406 }; 407 408 /* osc_string state definition. */ 409 static const struct input_state input_state_osc_string = { 410 "osc_string", 411 input_enter_osc, input_exit_osc, 412 input_state_osc_string_table 413 }; 414 415 /* apc_string state definition. */ 416 static const struct input_state input_state_apc_string = { 417 "apc_string", 418 input_enter_apc, input_exit_apc, 419 input_state_apc_string_table 420 }; 421 422 /* rename_string state definition. */ 423 static const struct input_state input_state_rename_string = { 424 "rename_string", 425 input_enter_rename, input_exit_rename, 426 input_state_rename_string_table 427 }; 428 429 /* consume_st state definition. */ 430 static const struct input_state input_state_consume_st = { 431 "consume_st", 432 input_enter_rename, NULL, /* rename also waits for ST */ 433 input_state_consume_st_table 434 }; 435 436 /* ground state table. */ 437 static const struct input_transition input_state_ground_table[] = { 438 INPUT_STATE_ANYWHERE, 439 440 { 0x00, 0x17, input_c0_dispatch, NULL }, 441 { 0x19, 0x19, input_c0_dispatch, NULL }, 442 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 443 { 0x20, 0x7e, input_print, NULL }, 444 { 0x7f, 0x7f, NULL, NULL }, 445 { 0x80, 0xff, input_top_bit_set, NULL }, 446 447 { -1, -1, NULL, NULL } 448 }; 449 450 /* esc_enter state table. */ 451 static const struct input_transition input_state_esc_enter_table[] = { 452 INPUT_STATE_ANYWHERE, 453 454 { 0x00, 0x17, input_c0_dispatch, NULL }, 455 { 0x19, 0x19, input_c0_dispatch, NULL }, 456 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 457 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 458 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 459 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 460 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 461 { 0x58, 0x58, NULL, &input_state_consume_st }, 462 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 463 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 464 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 465 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 466 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 467 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 468 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 469 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 470 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 471 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 472 { 0x7f, 0xff, NULL, NULL }, 473 474 { -1, -1, NULL, NULL } 475 }; 476 477 /* esc_interm state table. */ 478 static const struct input_transition input_state_esc_intermediate_table[] = { 479 INPUT_STATE_ANYWHERE, 480 481 { 0x00, 0x17, input_c0_dispatch, NULL }, 482 { 0x19, 0x19, input_c0_dispatch, NULL }, 483 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 484 { 0x20, 0x2f, input_intermediate, NULL }, 485 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 486 { 0x7f, 0xff, NULL, NULL }, 487 488 { -1, -1, NULL, NULL } 489 }; 490 491 /* csi_enter state table. */ 492 static const struct input_transition input_state_csi_enter_table[] = { 493 INPUT_STATE_ANYWHERE, 494 495 { 0x00, 0x17, input_c0_dispatch, NULL }, 496 { 0x19, 0x19, input_c0_dispatch, NULL }, 497 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 498 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 499 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 500 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 501 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 502 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 503 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 504 { 0x7f, 0xff, NULL, NULL }, 505 506 { -1, -1, NULL, NULL } 507 }; 508 509 /* csi_parameter state table. */ 510 static const struct input_transition input_state_csi_parameter_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, &input_state_csi_intermediate }, 517 { 0x30, 0x39, input_parameter, NULL }, 518 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 519 { 0x3b, 0x3b, input_parameter, NULL }, 520 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 521 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 522 { 0x7f, 0xff, NULL, NULL }, 523 524 { -1, -1, NULL, NULL } 525 }; 526 527 /* csi_intermediate state table. */ 528 static const struct input_transition input_state_csi_intermediate_table[] = { 529 INPUT_STATE_ANYWHERE, 530 531 { 0x00, 0x17, input_c0_dispatch, NULL }, 532 { 0x19, 0x19, input_c0_dispatch, NULL }, 533 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 534 { 0x20, 0x2f, input_intermediate, NULL }, 535 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 536 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 537 { 0x7f, 0xff, NULL, NULL }, 538 539 { -1, -1, NULL, NULL } 540 }; 541 542 /* csi_ignore state table. */ 543 static const struct input_transition input_state_csi_ignore_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, 0x3f, NULL, NULL }, 550 { 0x40, 0x7e, NULL, &input_state_ground }, 551 { 0x7f, 0xff, NULL, NULL }, 552 553 { -1, -1, NULL, NULL } 554 }; 555 556 /* dcs_enter state table. */ 557 static const struct input_transition input_state_dcs_enter_table[] = { 558 INPUT_STATE_ANYWHERE, 559 560 { 0x00, 0x17, NULL, NULL }, 561 { 0x19, 0x19, NULL, NULL }, 562 { 0x1c, 0x1f, NULL, NULL }, 563 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 564 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 565 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 566 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 567 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 568 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 569 { 0x7f, 0xff, NULL, NULL }, 570 571 { -1, -1, NULL, NULL } 572 }; 573 574 /* dcs_parameter state table. */ 575 static const struct input_transition input_state_dcs_parameter_table[] = { 576 INPUT_STATE_ANYWHERE, 577 578 { 0x00, 0x17, NULL, NULL }, 579 { 0x19, 0x19, NULL, NULL }, 580 { 0x1c, 0x1f, NULL, NULL }, 581 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 582 { 0x30, 0x39, input_parameter, NULL }, 583 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 584 { 0x3b, 0x3b, input_parameter, NULL }, 585 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 586 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 587 { 0x7f, 0xff, NULL, NULL }, 588 589 { -1, -1, NULL, NULL } 590 }; 591 592 /* dcs_interm state table. */ 593 static const struct input_transition input_state_dcs_intermediate_table[] = { 594 INPUT_STATE_ANYWHERE, 595 596 { 0x00, 0x17, NULL, NULL }, 597 { 0x19, 0x19, NULL, NULL }, 598 { 0x1c, 0x1f, NULL, NULL }, 599 { 0x20, 0x2f, input_intermediate, NULL }, 600 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 601 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 602 { 0x7f, 0xff, NULL, NULL }, 603 604 { -1, -1, NULL, NULL } 605 }; 606 607 /* dcs_handler state table. */ 608 static const struct input_transition input_state_dcs_handler_table[] = { 609 /* No INPUT_STATE_ANYWHERE */ 610 611 { 0x00, 0x1a, input_input, NULL }, 612 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 613 { 0x1c, 0xff, input_input, NULL }, 614 615 { -1, -1, NULL, NULL } 616 }; 617 618 /* dcs_escape state table. */ 619 static const struct input_transition input_state_dcs_escape_table[] = { 620 /* No INPUT_STATE_ANYWHERE */ 621 622 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 623 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 624 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 625 626 { -1, -1, NULL, NULL } 627 }; 628 629 /* dcs_ignore state table. */ 630 static const struct input_transition input_state_dcs_ignore_table[] = { 631 INPUT_STATE_ANYWHERE, 632 633 { 0x00, 0x17, NULL, NULL }, 634 { 0x19, 0x19, NULL, NULL }, 635 { 0x1c, 0x1f, NULL, NULL }, 636 { 0x20, 0xff, NULL, NULL }, 637 638 { -1, -1, NULL, NULL } 639 }; 640 641 /* osc_string state table. */ 642 static const struct input_transition input_state_osc_string_table[] = { 643 INPUT_STATE_ANYWHERE, 644 645 { 0x00, 0x06, NULL, NULL }, 646 { 0x07, 0x07, NULL, &input_state_ground }, 647 { 0x08, 0x17, NULL, NULL }, 648 { 0x19, 0x19, NULL, NULL }, 649 { 0x1c, 0x1f, NULL, NULL }, 650 { 0x20, 0xff, input_input, NULL }, 651 652 { -1, -1, NULL, NULL } 653 }; 654 655 /* apc_string state table. */ 656 static const struct input_transition input_state_apc_string_table[] = { 657 INPUT_STATE_ANYWHERE, 658 659 { 0x00, 0x17, NULL, NULL }, 660 { 0x19, 0x19, NULL, NULL }, 661 { 0x1c, 0x1f, NULL, NULL }, 662 { 0x20, 0xff, input_input, NULL }, 663 664 { -1, -1, NULL, NULL } 665 }; 666 667 /* rename_string state table. */ 668 static const struct input_transition input_state_rename_string_table[] = { 669 INPUT_STATE_ANYWHERE, 670 671 { 0x00, 0x17, NULL, NULL }, 672 { 0x19, 0x19, NULL, NULL }, 673 { 0x1c, 0x1f, NULL, NULL }, 674 { 0x20, 0xff, input_input, NULL }, 675 676 { -1, -1, NULL, NULL } 677 }; 678 679 /* consume_st state table. */ 680 static const struct input_transition input_state_consume_st_table[] = { 681 INPUT_STATE_ANYWHERE, 682 683 { 0x00, 0x17, NULL, NULL }, 684 { 0x19, 0x19, NULL, NULL }, 685 { 0x1c, 0x1f, NULL, NULL }, 686 { 0x20, 0xff, NULL, NULL }, 687 688 { -1, -1, NULL, NULL } 689 }; 690 691 /* Input table compare. */ 692 static int 693 input_table_compare(const void *key, const void *value) 694 { 695 const struct input_ctx *ictx = key; 696 const struct input_table_entry *entry = value; 697 698 if (ictx->ch != entry->ch) 699 return (ictx->ch - entry->ch); 700 return (strcmp(ictx->interm_buf, entry->interm)); 701 } 702 703 /* 704 * Timer - if this expires then have been waiting for a terminator for too 705 * long, so reset to ground. 706 */ 707 static void 708 input_timer_callback(__unused int fd, __unused short events, void *arg) 709 { 710 struct input_ctx *ictx = arg; 711 struct window_pane *wp = ictx->wp; 712 713 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 714 input_reset(wp, 0); 715 } 716 717 /* Start the timer. */ 718 static void 719 input_start_timer(struct input_ctx *ictx) 720 { 721 struct timeval tv = { .tv_usec = 100000 }; 722 723 event_del(&ictx->timer); 724 event_add(&ictx->timer, &tv); 725 } 726 727 /* Reset cell state to default. */ 728 static void 729 input_reset_cell(struct input_ctx *ictx) 730 { 731 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 732 ictx->cell.set = 0; 733 ictx->cell.g0set = ictx->cell.g1set = 0; 734 735 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 736 ictx->old_cx = 0; 737 ictx->old_cy = 0; 738 } 739 740 /* Initialise input parser. */ 741 void 742 input_init(struct window_pane *wp) 743 { 744 struct input_ctx *ictx; 745 746 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 747 748 ictx->input_space = INPUT_BUF_START; 749 ictx->input_buf = xmalloc(INPUT_BUF_START); 750 751 ictx->since_ground = evbuffer_new(); 752 753 evtimer_set(&ictx->timer, input_timer_callback, ictx); 754 755 input_reset(wp, 0); 756 } 757 758 /* Destroy input parser. */ 759 void 760 input_free(struct window_pane *wp) 761 { 762 struct input_ctx *ictx = wp->ictx; 763 764 event_del(&ictx->timer); 765 766 free(ictx->input_buf); 767 evbuffer_free(ictx->since_ground); 768 769 free(ictx); 770 wp->ictx = NULL; 771 } 772 773 /* Reset input state and clear screen. */ 774 void 775 input_reset(struct window_pane *wp, int clear) 776 { 777 struct input_ctx *ictx = wp->ictx; 778 779 input_reset_cell(ictx); 780 781 if (clear) { 782 if (wp->mode == NULL) 783 screen_write_start(&ictx->ctx, wp, &wp->base); 784 else 785 screen_write_start(&ictx->ctx, NULL, &wp->base); 786 screen_write_reset(&ictx->ctx); 787 screen_write_stop(&ictx->ctx); 788 } 789 790 input_clear(ictx); 791 792 ictx->last = -1; 793 794 ictx->state = &input_state_ground; 795 ictx->flags = 0; 796 } 797 798 /* Return pending data. */ 799 struct evbuffer * 800 input_pending(struct window_pane *wp) 801 { 802 return (wp->ictx->since_ground); 803 } 804 805 /* Change input state. */ 806 static void 807 input_set_state(struct window_pane *wp, const struct input_transition *itr) 808 { 809 struct input_ctx *ictx = wp->ictx; 810 811 if (ictx->state->exit != NULL) 812 ictx->state->exit(ictx); 813 ictx->state = itr->state; 814 if (ictx->state->enter != NULL) 815 ictx->state->enter(ictx); 816 } 817 818 /* Parse input. */ 819 void 820 input_parse(struct window_pane *wp) 821 { 822 struct input_ctx *ictx = wp->ictx; 823 const struct input_transition *itr; 824 struct evbuffer *evb = wp->event->input; 825 u_char *buf; 826 size_t len, off; 827 828 if (EVBUFFER_LENGTH(evb) == 0) 829 return; 830 831 window_update_activity(wp->window); 832 wp->flags |= PANE_CHANGED; 833 834 /* 835 * Open the screen. Use NULL wp if there is a mode set as don't want to 836 * update the tty. 837 */ 838 if (wp->mode == NULL) 839 screen_write_start(&ictx->ctx, wp, &wp->base); 840 else 841 screen_write_start(&ictx->ctx, NULL, &wp->base); 842 ictx->wp = wp; 843 844 buf = EVBUFFER_DATA(evb); 845 len = EVBUFFER_LENGTH(evb); 846 off = 0; 847 848 notify_input(wp, evb); 849 850 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 851 ictx->state->name, len, (int)len, buf); 852 853 /* Parse the input. */ 854 while (off < len) { 855 ictx->ch = buf[off++]; 856 857 /* Find the transition. */ 858 itr = ictx->state->transitions; 859 while (itr->first != -1 && itr->last != -1) { 860 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 861 break; 862 itr++; 863 } 864 if (itr->first == -1 || itr->last == -1) { 865 /* No transition? Eh? */ 866 fatalx("no transition from state"); 867 } 868 869 /* 870 * Any state except print stops the current collection. This is 871 * an optimization to avoid checking if the attributes have 872 * changed for every character. It will stop unnecessarily for 873 * sequences that don't make a terminal change, but they should 874 * be the minority. 875 */ 876 if (itr->handler != input_print) 877 screen_write_collect_end(&ictx->ctx); 878 879 /* 880 * Execute the handler, if any. Don't switch state if it 881 * returns non-zero. 882 */ 883 if (itr->handler != NULL && itr->handler(ictx) != 0) 884 continue; 885 886 /* And switch state, if necessary. */ 887 if (itr->state != NULL) 888 input_set_state(wp, itr); 889 890 /* If not in ground state, save input. */ 891 if (ictx->state != &input_state_ground) 892 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 893 } 894 895 /* Close the screen. */ 896 screen_write_stop(&ictx->ctx); 897 898 evbuffer_drain(evb, len); 899 } 900 901 /* Split the parameter list (if any). */ 902 static int 903 input_split(struct input_ctx *ictx) 904 { 905 const char *errstr; 906 char *ptr, *out; 907 int n; 908 909 ictx->param_list_len = 0; 910 if (ictx->param_len == 0) 911 return (0); 912 913 ptr = ictx->param_buf; 914 while ((out = strsep(&ptr, ";")) != NULL) { 915 if (*out == '\0') 916 n = -1; 917 else { 918 n = strtonum(out, 0, INT_MAX, &errstr); 919 if (errstr != NULL) 920 return (-1); 921 } 922 923 ictx->param_list[ictx->param_list_len++] = n; 924 if (ictx->param_list_len == nitems(ictx->param_list)) 925 return (-1); 926 } 927 928 return (0); 929 } 930 931 /* Get an argument or return default value. */ 932 static int 933 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 934 { 935 int retval; 936 937 if (validx >= ictx->param_list_len) 938 return (defval); 939 940 retval = ictx->param_list[validx]; 941 if (retval == -1) 942 return (defval); 943 if (retval < minval) 944 return (minval); 945 return (retval); 946 } 947 948 /* Reply to terminal query. */ 949 static void 950 input_reply(struct input_ctx *ictx, const char *fmt, ...) 951 { 952 va_list ap; 953 char *reply; 954 955 va_start(ap, fmt); 956 xvasprintf(&reply, fmt, ap); 957 va_end(ap); 958 959 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 960 free(reply); 961 } 962 963 /* Clear saved state. */ 964 static void 965 input_clear(struct input_ctx *ictx) 966 { 967 event_del(&ictx->timer); 968 969 *ictx->interm_buf = '\0'; 970 ictx->interm_len = 0; 971 972 *ictx->param_buf = '\0'; 973 ictx->param_len = 0; 974 975 *ictx->input_buf = '\0'; 976 ictx->input_len = 0; 977 978 ictx->flags &= ~INPUT_DISCARD; 979 } 980 981 /* Reset for ground state. */ 982 static void 983 input_ground(struct input_ctx *ictx) 984 { 985 event_del(&ictx->timer); 986 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 987 988 if (ictx->input_space > INPUT_BUF_START) { 989 ictx->input_space = INPUT_BUF_START; 990 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 991 } 992 } 993 994 /* Output this character to the screen. */ 995 static int 996 input_print(struct input_ctx *ictx) 997 { 998 int set; 999 1000 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1001 1002 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1003 if (set == 1) 1004 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1005 else 1006 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1007 1008 utf8_set(&ictx->cell.cell.data, ictx->ch); 1009 screen_write_collect_add(&ictx->ctx, &ictx->cell.cell); 1010 ictx->last = ictx->ch; 1011 1012 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1013 1014 return (0); 1015 } 1016 1017 /* Collect intermediate string. */ 1018 static int 1019 input_intermediate(struct input_ctx *ictx) 1020 { 1021 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1022 ictx->flags |= INPUT_DISCARD; 1023 else { 1024 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1025 ictx->interm_buf[ictx->interm_len] = '\0'; 1026 } 1027 1028 return (0); 1029 } 1030 1031 /* Collect parameter string. */ 1032 static int 1033 input_parameter(struct input_ctx *ictx) 1034 { 1035 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1036 ictx->flags |= INPUT_DISCARD; 1037 else { 1038 ictx->param_buf[ictx->param_len++] = ictx->ch; 1039 ictx->param_buf[ictx->param_len] = '\0'; 1040 } 1041 1042 return (0); 1043 } 1044 1045 /* Collect input string. */ 1046 static int 1047 input_input(struct input_ctx *ictx) 1048 { 1049 size_t available; 1050 1051 available = ictx->input_space; 1052 while (ictx->input_len + 1 >= available) { 1053 available *= 2; 1054 if (available > INPUT_BUF_LIMIT) { 1055 ictx->flags |= INPUT_DISCARD; 1056 return (0); 1057 } 1058 ictx->input_buf = xrealloc(ictx->input_buf, available); 1059 ictx->input_space = available; 1060 } 1061 ictx->input_buf[ictx->input_len++] = ictx->ch; 1062 ictx->input_buf[ictx->input_len] = '\0'; 1063 1064 return (0); 1065 } 1066 1067 /* Execute C0 control sequence. */ 1068 static int 1069 input_c0_dispatch(struct input_ctx *ictx) 1070 { 1071 struct screen_write_ctx *sctx = &ictx->ctx; 1072 struct window_pane *wp = ictx->wp; 1073 struct screen *s = sctx->s; 1074 1075 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1076 1077 log_debug("%s: '%c'", __func__, ictx->ch); 1078 1079 switch (ictx->ch) { 1080 case '\000': /* NUL */ 1081 break; 1082 case '\007': /* BEL */ 1083 alerts_queue(wp->window, WINDOW_BELL); 1084 break; 1085 case '\010': /* BS */ 1086 screen_write_backspace(sctx); 1087 break; 1088 case '\011': /* HT */ 1089 /* Don't tab beyond the end of the line. */ 1090 if (s->cx >= screen_size_x(s) - 1) 1091 break; 1092 1093 /* Find the next tab point, or use the last column if none. */ 1094 do { 1095 s->cx++; 1096 if (bit_test(s->tabs, s->cx)) 1097 break; 1098 } while (s->cx < screen_size_x(s) - 1); 1099 break; 1100 case '\012': /* LF */ 1101 case '\013': /* VT */ 1102 case '\014': /* FF */ 1103 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1104 break; 1105 case '\015': /* CR */ 1106 screen_write_carriagereturn(sctx); 1107 break; 1108 case '\016': /* SO */ 1109 ictx->cell.set = 1; 1110 break; 1111 case '\017': /* SI */ 1112 ictx->cell.set = 0; 1113 break; 1114 default: 1115 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1116 break; 1117 } 1118 1119 ictx->last = -1; 1120 return (0); 1121 } 1122 1123 /* Execute escape sequence. */ 1124 static int 1125 input_esc_dispatch(struct input_ctx *ictx) 1126 { 1127 struct screen_write_ctx *sctx = &ictx->ctx; 1128 struct screen *s = sctx->s; 1129 struct input_table_entry *entry; 1130 1131 if (ictx->flags & INPUT_DISCARD) 1132 return (0); 1133 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1134 1135 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1136 sizeof input_esc_table[0], input_table_compare); 1137 if (entry == NULL) { 1138 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1139 return (0); 1140 } 1141 1142 switch (entry->type) { 1143 case INPUT_ESC_RIS: 1144 window_pane_reset_palette(ictx->wp); 1145 input_reset_cell(ictx); 1146 screen_write_reset(sctx); 1147 break; 1148 case INPUT_ESC_IND: 1149 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1150 break; 1151 case INPUT_ESC_NEL: 1152 screen_write_carriagereturn(sctx); 1153 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1154 break; 1155 case INPUT_ESC_HTS: 1156 if (s->cx < screen_size_x(s)) 1157 bit_set(s->tabs, s->cx); 1158 break; 1159 case INPUT_ESC_RI: 1160 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1161 break; 1162 case INPUT_ESC_DECKPAM: 1163 screen_write_mode_set(sctx, MODE_KKEYPAD); 1164 break; 1165 case INPUT_ESC_DECKPNM: 1166 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1167 break; 1168 case INPUT_ESC_DECSC: 1169 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1170 ictx->old_cx = s->cx; 1171 ictx->old_cy = s->cy; 1172 break; 1173 case INPUT_ESC_DECRC: 1174 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1175 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1176 break; 1177 case INPUT_ESC_DECALN: 1178 screen_write_alignmenttest(sctx); 1179 break; 1180 case INPUT_ESC_SCSG0_ON: 1181 ictx->cell.g0set = 1; 1182 break; 1183 case INPUT_ESC_SCSG0_OFF: 1184 ictx->cell.g0set = 0; 1185 break; 1186 case INPUT_ESC_SCSG1_ON: 1187 ictx->cell.g1set = 1; 1188 break; 1189 case INPUT_ESC_SCSG1_OFF: 1190 ictx->cell.g1set = 0; 1191 break; 1192 case INPUT_ESC_ST: 1193 /* ST terminates OSC but the state transition already did it. */ 1194 break; 1195 } 1196 1197 ictx->last = -1; 1198 return (0); 1199 } 1200 1201 /* Execute control sequence. */ 1202 static int 1203 input_csi_dispatch(struct input_ctx *ictx) 1204 { 1205 struct screen_write_ctx *sctx = &ictx->ctx; 1206 struct screen *s = sctx->s; 1207 struct input_table_entry *entry; 1208 int i, n, m; 1209 u_int cx; 1210 1211 if (ictx->flags & INPUT_DISCARD) 1212 return (0); 1213 1214 log_debug("%s: '%c' \"%s\" \"%s\"", 1215 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1216 1217 if (input_split(ictx) != 0) 1218 return (0); 1219 1220 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1221 sizeof input_csi_table[0], input_table_compare); 1222 if (entry == NULL) { 1223 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1224 return (0); 1225 } 1226 1227 switch (entry->type) { 1228 case INPUT_CSI_CBT: 1229 /* Find the previous tab point, n times. */ 1230 cx = s->cx; 1231 if (cx > screen_size_x(s) - 1) 1232 cx = screen_size_x(s) - 1; 1233 n = input_get(ictx, 0, 1, 1); 1234 while (cx > 0 && n-- > 0) { 1235 do 1236 cx--; 1237 while (cx > 0 && !bit_test(s->tabs, cx)); 1238 } 1239 s->cx = cx; 1240 break; 1241 case INPUT_CSI_CUB: 1242 screen_write_cursorleft(sctx, input_get(ictx, 0, 1, 1)); 1243 break; 1244 case INPUT_CSI_CUD: 1245 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1246 break; 1247 case INPUT_CSI_CUF: 1248 screen_write_cursorright(sctx, input_get(ictx, 0, 1, 1)); 1249 break; 1250 case INPUT_CSI_CUP: 1251 n = input_get(ictx, 0, 1, 1); 1252 m = input_get(ictx, 1, 1, 1); 1253 screen_write_cursormove(sctx, m - 1, n - 1); 1254 break; 1255 case INPUT_CSI_WINOPS: 1256 input_csi_dispatch_winops(ictx); 1257 break; 1258 case INPUT_CSI_CUU: 1259 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1260 break; 1261 case INPUT_CSI_CNL: 1262 screen_write_carriagereturn(sctx); 1263 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1264 break; 1265 case INPUT_CSI_CPL: 1266 screen_write_carriagereturn(sctx); 1267 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1268 break; 1269 case INPUT_CSI_DA: 1270 switch (input_get(ictx, 0, 0, 0)) { 1271 case 0: 1272 input_reply(ictx, "\033[?1;2c"); 1273 break; 1274 default: 1275 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1276 break; 1277 } 1278 break; 1279 case INPUT_CSI_DA_TWO: 1280 switch (input_get(ictx, 0, 0, 0)) { 1281 case 0: 1282 input_reply(ictx, "\033[>84;0;0c"); 1283 break; 1284 default: 1285 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1286 break; 1287 } 1288 break; 1289 case INPUT_CSI_ECH: 1290 screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1), 1291 ictx->cell.cell.bg); 1292 break; 1293 case INPUT_CSI_DCH: 1294 screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1), 1295 ictx->cell.cell.bg); 1296 break; 1297 case INPUT_CSI_DECSTBM: 1298 n = input_get(ictx, 0, 1, 1); 1299 m = input_get(ictx, 1, 1, screen_size_y(s)); 1300 screen_write_scrollregion(sctx, n - 1, m - 1); 1301 break; 1302 case INPUT_CSI_DL: 1303 screen_write_deleteline(sctx, input_get(ictx, 0, 1, 1), 1304 ictx->cell.cell.bg); 1305 break; 1306 case INPUT_CSI_DSR: 1307 switch (input_get(ictx, 0, 0, 0)) { 1308 case 5: 1309 input_reply(ictx, "\033[0n"); 1310 break; 1311 case 6: 1312 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1313 break; 1314 default: 1315 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1316 break; 1317 } 1318 break; 1319 case INPUT_CSI_ED: 1320 switch (input_get(ictx, 0, 0, 0)) { 1321 case 0: 1322 screen_write_clearendofscreen(sctx, ictx->cell.cell.bg); 1323 break; 1324 case 1: 1325 screen_write_clearstartofscreen(sctx, ictx->cell.cell.bg); 1326 break; 1327 case 2: 1328 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1329 break; 1330 case 3: 1331 switch (input_get(ictx, 1, 0, 0)) { 1332 case 0: 1333 /* 1334 * Linux console extension to clear history 1335 * (for example before locking the screen). 1336 */ 1337 screen_write_clearhistory(sctx); 1338 break; 1339 } 1340 break; 1341 default: 1342 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1343 break; 1344 } 1345 break; 1346 case INPUT_CSI_EL: 1347 switch (input_get(ictx, 0, 0, 0)) { 1348 case 0: 1349 screen_write_clearendofline(sctx, ictx->cell.cell.bg); 1350 break; 1351 case 1: 1352 screen_write_clearstartofline(sctx, ictx->cell.cell.bg); 1353 break; 1354 case 2: 1355 screen_write_clearline(sctx, ictx->cell.cell.bg); 1356 break; 1357 default: 1358 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1359 break; 1360 } 1361 break; 1362 case INPUT_CSI_HPA: 1363 n = input_get(ictx, 0, 1, 1); 1364 screen_write_cursormove(sctx, n - 1, s->cy); 1365 break; 1366 case INPUT_CSI_ICH: 1367 screen_write_insertcharacter(sctx, input_get(ictx, 0, 1, 1), 1368 ictx->cell.cell.bg); 1369 break; 1370 case INPUT_CSI_IL: 1371 screen_write_insertline(sctx, input_get(ictx, 0, 1, 1), 1372 ictx->cell.cell.bg); 1373 break; 1374 case INPUT_CSI_REP: 1375 if (ictx->last == -1) 1376 break; 1377 ictx->ch = ictx->last; 1378 1379 n = input_get(ictx, 0, 1, 1); 1380 for (i = 0; i < n; i++) 1381 input_print(ictx); 1382 break; 1383 case INPUT_CSI_RCP: 1384 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1385 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1386 break; 1387 case INPUT_CSI_RM: 1388 input_csi_dispatch_rm(ictx); 1389 break; 1390 case INPUT_CSI_RM_PRIVATE: 1391 input_csi_dispatch_rm_private(ictx); 1392 break; 1393 case INPUT_CSI_SCP: 1394 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1395 ictx->old_cx = s->cx; 1396 ictx->old_cy = s->cy; 1397 break; 1398 case INPUT_CSI_SGR: 1399 input_csi_dispatch_sgr(ictx); 1400 break; 1401 case INPUT_CSI_SM: 1402 input_csi_dispatch_sm(ictx); 1403 break; 1404 case INPUT_CSI_SM_PRIVATE: 1405 input_csi_dispatch_sm_private(ictx); 1406 break; 1407 case INPUT_CSI_SU: 1408 screen_write_scrollup(sctx, input_get(ictx, 0, 1, 1), 1409 ictx->cell.cell.bg); 1410 break; 1411 case INPUT_CSI_TBC: 1412 switch (input_get(ictx, 0, 0, 0)) { 1413 case 0: 1414 if (s->cx < screen_size_x(s)) 1415 bit_clear(s->tabs, s->cx); 1416 break; 1417 case 3: 1418 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1419 break; 1420 default: 1421 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1422 break; 1423 } 1424 break; 1425 case INPUT_CSI_VPA: 1426 n = input_get(ictx, 0, 1, 1); 1427 screen_write_cursormove(sctx, s->cx, n - 1); 1428 break; 1429 case INPUT_CSI_DECSCUSR: 1430 n = input_get(ictx, 0, 0, 0); 1431 screen_set_cursor_style(s, n); 1432 break; 1433 } 1434 1435 ictx->last = -1; 1436 return (0); 1437 } 1438 1439 /* Handle CSI RM. */ 1440 static void 1441 input_csi_dispatch_rm(struct input_ctx *ictx) 1442 { 1443 u_int i; 1444 1445 for (i = 0; i < ictx->param_list_len; i++) { 1446 switch (input_get(ictx, i, 0, -1)) { 1447 case 4: /* IRM */ 1448 screen_write_mode_clear(&ictx->ctx, MODE_INSERT); 1449 break; 1450 case 34: 1451 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1452 break; 1453 default: 1454 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1455 break; 1456 } 1457 } 1458 } 1459 1460 /* Handle CSI private RM. */ 1461 static void 1462 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1463 { 1464 struct window_pane *wp = ictx->wp; 1465 u_int i; 1466 1467 for (i = 0; i < ictx->param_list_len; i++) { 1468 switch (input_get(ictx, i, 0, -1)) { 1469 case 1: /* DECCKM */ 1470 screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR); 1471 break; 1472 case 3: /* DECCOLM */ 1473 screen_write_cursormove(&ictx->ctx, 0, 0); 1474 screen_write_clearscreen(&ictx->ctx, 1475 ictx->cell.cell.bg); 1476 break; 1477 case 7: /* DECAWM */ 1478 screen_write_mode_clear(&ictx->ctx, MODE_WRAP); 1479 break; 1480 case 12: 1481 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1482 break; 1483 case 25: /* TCEM */ 1484 screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); 1485 break; 1486 case 1000: 1487 case 1001: 1488 case 1002: 1489 case 1003: 1490 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1491 break; 1492 case 1004: 1493 screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON); 1494 break; 1495 case 1005: 1496 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8); 1497 break; 1498 case 1006: 1499 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR); 1500 break; 1501 case 47: 1502 case 1047: 1503 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1504 break; 1505 case 1049: 1506 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1507 break; 1508 case 2004: 1509 screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE); 1510 break; 1511 default: 1512 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1513 break; 1514 } 1515 } 1516 } 1517 1518 /* Handle CSI SM. */ 1519 static void 1520 input_csi_dispatch_sm(struct input_ctx *ictx) 1521 { 1522 u_int i; 1523 1524 for (i = 0; i < ictx->param_list_len; i++) { 1525 switch (input_get(ictx, i, 0, -1)) { 1526 case 4: /* IRM */ 1527 screen_write_mode_set(&ictx->ctx, MODE_INSERT); 1528 break; 1529 case 34: 1530 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1531 break; 1532 default: 1533 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1534 break; 1535 } 1536 } 1537 } 1538 1539 /* Handle CSI private SM. */ 1540 static void 1541 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1542 { 1543 struct window_pane *wp = ictx->wp; 1544 u_int i; 1545 1546 for (i = 0; i < ictx->param_list_len; i++) { 1547 switch (input_get(ictx, i, 0, -1)) { 1548 case 1: /* DECCKM */ 1549 screen_write_mode_set(&ictx->ctx, MODE_KCURSOR); 1550 break; 1551 case 3: /* DECCOLM */ 1552 screen_write_cursormove(&ictx->ctx, 0, 0); 1553 screen_write_clearscreen(&ictx->ctx, 1554 ictx->cell.cell.bg); 1555 break; 1556 case 7: /* DECAWM */ 1557 screen_write_mode_set(&ictx->ctx, MODE_WRAP); 1558 break; 1559 case 12: 1560 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1561 break; 1562 case 25: /* TCEM */ 1563 screen_write_mode_set(&ictx->ctx, MODE_CURSOR); 1564 break; 1565 case 1000: 1566 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1567 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD); 1568 break; 1569 case 1002: 1570 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1571 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON); 1572 break; 1573 case 1003: 1574 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1575 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_ALL); 1576 break; 1577 case 1004: 1578 if (ictx->ctx.s->mode & MODE_FOCUSON) 1579 break; 1580 screen_write_mode_set(&ictx->ctx, MODE_FOCUSON); 1581 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1582 break; 1583 case 1005: 1584 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8); 1585 break; 1586 case 1006: 1587 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR); 1588 break; 1589 case 47: 1590 case 1047: 1591 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1592 break; 1593 case 1049: 1594 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1595 break; 1596 case 2004: 1597 screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE); 1598 break; 1599 default: 1600 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1601 break; 1602 } 1603 } 1604 } 1605 1606 /* Handle CSI window operations. */ 1607 static void 1608 input_csi_dispatch_winops(struct input_ctx *ictx) 1609 { 1610 struct window_pane *wp = ictx->wp; 1611 int n, m; 1612 1613 m = 0; 1614 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1615 switch (n) { 1616 case 1: 1617 case 2: 1618 case 5: 1619 case 6: 1620 case 7: 1621 case 11: 1622 case 13: 1623 case 14: 1624 case 19: 1625 case 20: 1626 case 21: 1627 case 24: 1628 break; 1629 case 3: 1630 case 4: 1631 case 8: 1632 m++; 1633 if (input_get(ictx, m, 0, -1) == -1) 1634 return; 1635 /* FALLTHROUGH */ 1636 case 9: 1637 case 10: 1638 m++; 1639 if (input_get(ictx, m, 0, -1) == -1) 1640 return; 1641 break; 1642 case 22: 1643 m++; 1644 switch (input_get(ictx, m, 0, -1)) { 1645 case -1: 1646 return; 1647 case 0: 1648 case 2: 1649 screen_push_title(ictx->ctx.s); 1650 break; 1651 } 1652 break; 1653 case 23: 1654 m++; 1655 switch (input_get(ictx, m, 0, -1)) { 1656 case -1: 1657 return; 1658 case 0: 1659 case 2: 1660 screen_pop_title(ictx->ctx.s); 1661 server_status_window(ictx->wp->window); 1662 break; 1663 } 1664 break; 1665 case 18: 1666 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1667 break; 1668 default: 1669 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1670 break; 1671 } 1672 m++; 1673 } 1674 } 1675 1676 /* Handle CSI SGR for 256 colours. */ 1677 static void 1678 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1679 { 1680 struct grid_cell *gc = &ictx->cell.cell; 1681 int c; 1682 1683 (*i)++; 1684 c = input_get(ictx, *i, 0, -1); 1685 if (c == -1) { 1686 if (fgbg == 38) 1687 gc->fg = 8; 1688 else if (fgbg == 48) 1689 gc->bg = 8; 1690 } else { 1691 if (fgbg == 38) 1692 gc->fg = c | COLOUR_FLAG_256; 1693 else if (fgbg == 48) 1694 gc->bg = c | COLOUR_FLAG_256; 1695 } 1696 } 1697 1698 /* Handle CSI SGR for RGB colours. */ 1699 static void 1700 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1701 { 1702 struct grid_cell *gc = &ictx->cell.cell; 1703 int r, g, b; 1704 1705 (*i)++; 1706 r = input_get(ictx, *i, 0, -1); 1707 if (r == -1 || r > 255) 1708 return; 1709 (*i)++; 1710 g = input_get(ictx, *i, 0, -1); 1711 if (g == -1 || g > 255) 1712 return; 1713 (*i)++; 1714 b = input_get(ictx, *i, 0, -1); 1715 if (b == -1 || b > 255) 1716 return; 1717 1718 if (fgbg == 38) 1719 gc->fg = colour_join_rgb(r, g, b); 1720 else if (fgbg == 48) 1721 gc->bg = colour_join_rgb(r, g, b); 1722 } 1723 1724 /* Handle CSI SGR. */ 1725 static void 1726 input_csi_dispatch_sgr(struct input_ctx *ictx) 1727 { 1728 struct grid_cell *gc = &ictx->cell.cell; 1729 u_int i; 1730 int n; 1731 1732 if (ictx->param_list_len == 0) { 1733 memcpy(gc, &grid_default_cell, sizeof *gc); 1734 return; 1735 } 1736 1737 for (i = 0; i < ictx->param_list_len; i++) { 1738 n = input_get(ictx, i, 0, 0); 1739 1740 if (n == 38 || n == 48) { 1741 i++; 1742 switch (input_get(ictx, i, 0, -1)) { 1743 case 2: 1744 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1745 break; 1746 case 5: 1747 input_csi_dispatch_sgr_256(ictx, n, &i); 1748 break; 1749 } 1750 continue; 1751 } 1752 1753 switch (n) { 1754 case 0: 1755 case 10: 1756 memcpy(gc, &grid_default_cell, sizeof *gc); 1757 break; 1758 case 1: 1759 gc->attr |= GRID_ATTR_BRIGHT; 1760 break; 1761 case 2: 1762 gc->attr |= GRID_ATTR_DIM; 1763 break; 1764 case 3: 1765 gc->attr |= GRID_ATTR_ITALICS; 1766 break; 1767 case 4: 1768 gc->attr |= GRID_ATTR_UNDERSCORE; 1769 break; 1770 case 5: 1771 gc->attr |= GRID_ATTR_BLINK; 1772 break; 1773 case 7: 1774 gc->attr |= GRID_ATTR_REVERSE; 1775 break; 1776 case 8: 1777 gc->attr |= GRID_ATTR_HIDDEN; 1778 break; 1779 case 9: 1780 gc->attr |= GRID_ATTR_STRIKETHROUGH; 1781 break; 1782 case 22: 1783 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 1784 break; 1785 case 23: 1786 gc->attr &= ~GRID_ATTR_ITALICS; 1787 break; 1788 case 24: 1789 gc->attr &= ~GRID_ATTR_UNDERSCORE; 1790 break; 1791 case 25: 1792 gc->attr &= ~GRID_ATTR_BLINK; 1793 break; 1794 case 27: 1795 gc->attr &= ~GRID_ATTR_REVERSE; 1796 break; 1797 case 28: 1798 gc->attr &= ~GRID_ATTR_HIDDEN; 1799 break; 1800 case 29: 1801 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 1802 break; 1803 case 30: 1804 case 31: 1805 case 32: 1806 case 33: 1807 case 34: 1808 case 35: 1809 case 36: 1810 case 37: 1811 gc->fg = n - 30; 1812 break; 1813 case 39: 1814 gc->fg = 8; 1815 break; 1816 case 40: 1817 case 41: 1818 case 42: 1819 case 43: 1820 case 44: 1821 case 45: 1822 case 46: 1823 case 47: 1824 gc->bg = n - 40; 1825 break; 1826 case 49: 1827 gc->bg = 8; 1828 break; 1829 case 90: 1830 case 91: 1831 case 92: 1832 case 93: 1833 case 94: 1834 case 95: 1835 case 96: 1836 case 97: 1837 gc->fg = n; 1838 break; 1839 case 100: 1840 case 101: 1841 case 102: 1842 case 103: 1843 case 104: 1844 case 105: 1845 case 106: 1846 case 107: 1847 gc->bg = n - 10; 1848 break; 1849 } 1850 } 1851 } 1852 1853 /* DCS string started. */ 1854 static void 1855 input_enter_dcs(struct input_ctx *ictx) 1856 { 1857 log_debug("%s", __func__); 1858 1859 input_clear(ictx); 1860 input_start_timer(ictx); 1861 ictx->last = -1; 1862 } 1863 1864 /* DCS terminator (ST) received. */ 1865 static int 1866 input_dcs_dispatch(struct input_ctx *ictx) 1867 { 1868 const char prefix[] = "tmux;"; 1869 const u_int prefix_len = (sizeof prefix) - 1; 1870 1871 if (ictx->flags & INPUT_DISCARD) 1872 return (0); 1873 1874 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1875 1876 /* Check for tmux prefix. */ 1877 if (ictx->input_len >= prefix_len && 1878 strncmp(ictx->input_buf, prefix, prefix_len) == 0) { 1879 screen_write_rawstring(&ictx->ctx, 1880 ictx->input_buf + prefix_len, ictx->input_len - prefix_len); 1881 } 1882 1883 return (0); 1884 } 1885 1886 /* OSC string started. */ 1887 static void 1888 input_enter_osc(struct input_ctx *ictx) 1889 { 1890 log_debug("%s", __func__); 1891 1892 input_clear(ictx); 1893 input_start_timer(ictx); 1894 ictx->last = -1; 1895 } 1896 1897 /* OSC terminator (ST) received. */ 1898 static void 1899 input_exit_osc(struct input_ctx *ictx) 1900 { 1901 u_char *p = ictx->input_buf; 1902 u_int option; 1903 1904 if (ictx->flags & INPUT_DISCARD) 1905 return; 1906 if (ictx->input_len < 1 || *p < '0' || *p > '9') 1907 return; 1908 1909 log_debug("%s: \"%s\"", __func__, p); 1910 1911 option = 0; 1912 while (*p >= '0' && *p <= '9') 1913 option = option * 10 + *p++ - '0'; 1914 if (*p == ';') 1915 p++; 1916 1917 switch (option) { 1918 case 0: 1919 case 2: 1920 if (utf8_isvalid(p)) { 1921 screen_set_title(ictx->ctx.s, p); 1922 server_status_window(ictx->wp->window); 1923 } 1924 break; 1925 case 4: 1926 input_osc_4(ictx->wp, p); 1927 break; 1928 case 10: 1929 input_osc_10(ictx->wp, p); 1930 break; 1931 case 11: 1932 input_osc_11(ictx->wp, p); 1933 break; 1934 case 12: 1935 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 1936 screen_set_cursor_colour(ictx->ctx.s, p); 1937 break; 1938 case 52: 1939 input_osc_52(ictx->wp, p); 1940 break; 1941 case 104: 1942 input_osc_104(ictx->wp, p); 1943 break; 1944 case 112: 1945 if (*p == '\0') /* no arguments allowed */ 1946 screen_set_cursor_colour(ictx->ctx.s, ""); 1947 break; 1948 default: 1949 log_debug("%s: unknown '%u'", __func__, option); 1950 break; 1951 } 1952 } 1953 1954 /* APC string started. */ 1955 static void 1956 input_enter_apc(struct input_ctx *ictx) 1957 { 1958 log_debug("%s", __func__); 1959 1960 input_clear(ictx); 1961 input_start_timer(ictx); 1962 ictx->last = -1; 1963 } 1964 1965 /* APC terminator (ST) received. */ 1966 static void 1967 input_exit_apc(struct input_ctx *ictx) 1968 { 1969 if (ictx->flags & INPUT_DISCARD) 1970 return; 1971 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1972 1973 if (!utf8_isvalid(ictx->input_buf)) 1974 return; 1975 screen_set_title(ictx->ctx.s, ictx->input_buf); 1976 server_status_window(ictx->wp->window); 1977 } 1978 1979 /* Rename string started. */ 1980 static void 1981 input_enter_rename(struct input_ctx *ictx) 1982 { 1983 log_debug("%s", __func__); 1984 1985 input_clear(ictx); 1986 input_start_timer(ictx); 1987 ictx->last = -1; 1988 } 1989 1990 /* Rename terminator (ST) received. */ 1991 static void 1992 input_exit_rename(struct input_ctx *ictx) 1993 { 1994 if (ictx->flags & INPUT_DISCARD) 1995 return; 1996 if (!options_get_number(ictx->wp->window->options, "allow-rename")) 1997 return; 1998 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1999 2000 if (!utf8_isvalid(ictx->input_buf)) 2001 return; 2002 window_set_name(ictx->wp->window, ictx->input_buf); 2003 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2004 server_status_window(ictx->wp->window); 2005 } 2006 2007 /* Open UTF-8 character. */ 2008 static int 2009 input_top_bit_set(struct input_ctx *ictx) 2010 { 2011 struct utf8_data *ud = &ictx->utf8data; 2012 2013 ictx->last = -1; 2014 2015 if (!ictx->utf8started) { 2016 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2017 return (0); 2018 ictx->utf8started = 1; 2019 return (0); 2020 } 2021 2022 switch (utf8_append(ud, ictx->ch)) { 2023 case UTF8_MORE: 2024 return (0); 2025 case UTF8_ERROR: 2026 ictx->utf8started = 0; 2027 return (0); 2028 case UTF8_DONE: 2029 break; 2030 } 2031 ictx->utf8started = 0; 2032 2033 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2034 (int)ud->size, ud->data, ud->width); 2035 2036 utf8_copy(&ictx->cell.cell.data, ud); 2037 screen_write_collect_add(&ictx->ctx, &ictx->cell.cell); 2038 2039 return (0); 2040 } 2041 2042 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2043 static void 2044 input_osc_4(struct window_pane *wp, const char *p) 2045 { 2046 char *copy, *s, *next = NULL; 2047 long idx; 2048 u_int r, g, b; 2049 2050 copy = s = xstrdup(p); 2051 while (s != NULL && *s != '\0') { 2052 idx = strtol(s, &next, 10); 2053 if (*next++ != ';') 2054 goto bad; 2055 if (idx < 0 || idx >= 0x100) 2056 goto bad; 2057 2058 s = strsep(&next, ";"); 2059 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2060 s = next; 2061 continue; 2062 } 2063 2064 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2065 s = next; 2066 } 2067 2068 free(copy); 2069 return; 2070 2071 bad: 2072 log_debug("bad OSC 4: %s", p); 2073 free(copy); 2074 } 2075 2076 /* Handle the OSC 10 sequence for setting background colour. */ 2077 static void 2078 input_osc_10(struct window_pane *wp, const char *p) 2079 { 2080 u_int r, g, b; 2081 2082 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2083 goto bad; 2084 2085 wp->colgc.fg = colour_join_rgb(r, g, b); 2086 wp->flags |= PANE_REDRAW; 2087 2088 return; 2089 2090 bad: 2091 log_debug("bad OSC 10: %s", p); 2092 } 2093 2094 /* Handle the OSC 11 sequence for setting background colour. */ 2095 static void 2096 input_osc_11(struct window_pane *wp, const char *p) 2097 { 2098 u_int r, g, b; 2099 2100 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2101 goto bad; 2102 2103 wp->colgc.bg = colour_join_rgb(r, g, b); 2104 wp->flags |= PANE_REDRAW; 2105 2106 return; 2107 2108 bad: 2109 log_debug("bad OSC 11: %s", p); 2110 } 2111 2112 /* Handle the OSC 52 sequence for setting the clipboard. */ 2113 static void 2114 input_osc_52(struct window_pane *wp, const char *p) 2115 { 2116 char *end; 2117 size_t len; 2118 u_char *out; 2119 int outlen, state; 2120 struct screen_write_ctx ctx; 2121 2122 state = options_get_number(global_options, "set-clipboard"); 2123 if (state != 2) 2124 return; 2125 2126 if ((end = strchr(p, ';')) == NULL) 2127 return; 2128 end++; 2129 if (*end == '\0') 2130 return; 2131 2132 len = (strlen(end) / 4) * 3; 2133 if (len == 0) 2134 return; 2135 2136 out = xmalloc(len); 2137 if ((outlen = b64_pton(end, out, len)) == -1) { 2138 free(out); 2139 return; 2140 } 2141 2142 screen_write_start(&ctx, wp, NULL); 2143 screen_write_setselection(&ctx, out, outlen); 2144 screen_write_stop(&ctx); 2145 notify_pane("pane-set-clipboard", wp); 2146 2147 paste_add(out, outlen); 2148 } 2149 2150 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2151 static void 2152 input_osc_104(struct window_pane *wp, const char *p) 2153 { 2154 char *copy, *s; 2155 long idx; 2156 2157 if (*p == '\0') { 2158 window_pane_reset_palette(wp); 2159 return; 2160 } 2161 2162 copy = s = xstrdup(p); 2163 while (*s != '\0') { 2164 idx = strtol(s, &s, 10); 2165 if (*s != '\0' && *s != ';') 2166 goto bad; 2167 if (idx < 0 || idx >= 0x100) 2168 goto bad; 2169 2170 window_pane_unset_palette(wp, idx); 2171 if (*s == ';') 2172 s++; 2173 } 2174 free(copy); 2175 return; 2176 2177 bad: 2178 log_debug("bad OSC 104: %s", p); 2179 free(copy); 2180 } 2181