1 /* $OpenBSD$ */ 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 * https://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 argument. */ 62 struct input_param { 63 enum { 64 INPUT_MISSING, 65 INPUT_NUMBER, 66 INPUT_STRING 67 } type; 68 union { 69 int num; 70 char *str; 71 }; 72 }; 73 74 /* Input parser context. */ 75 struct input_ctx { 76 struct window_pane *wp; 77 struct screen_write_ctx ctx; 78 79 struct input_cell cell; 80 81 struct input_cell old_cell; 82 u_int old_cx; 83 u_int old_cy; 84 int old_mode; 85 86 u_char interm_buf[4]; 87 size_t interm_len; 88 89 u_char param_buf[64]; 90 size_t param_len; 91 92 #define INPUT_BUF_START 32 93 #define INPUT_BUF_LIMIT 1048576 94 u_char *input_buf; 95 size_t input_len; 96 size_t input_space; 97 enum { 98 INPUT_END_ST, 99 INPUT_END_BEL 100 } input_end; 101 102 struct input_param param_list[24]; 103 u_int param_list_len; 104 105 struct utf8_data utf8data; 106 int utf8started; 107 108 int ch; 109 int last; 110 111 int flags; 112 #define INPUT_DISCARD 0x1 113 114 const struct input_state *state; 115 116 struct event timer; 117 118 /* 119 * All input received since we were last in the ground state. Sent to 120 * control clients on connection. 121 */ 122 struct evbuffer *since_ground; 123 }; 124 125 /* Helper functions. */ 126 struct input_transition; 127 static int input_split(struct input_ctx *); 128 static int input_get(struct input_ctx *, u_int, int, int); 129 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 130 static void input_set_state(struct window_pane *, 131 const struct input_transition *); 132 static void input_reset_cell(struct input_ctx *); 133 134 static void input_osc_4(struct input_ctx *, const char *); 135 static void input_osc_10(struct input_ctx *, const char *); 136 static void input_osc_11(struct input_ctx *, const char *); 137 static void input_osc_52(struct input_ctx *, const char *); 138 static void input_osc_104(struct input_ctx *, const char *); 139 140 /* Transition entry/exit handlers. */ 141 static void input_clear(struct input_ctx *); 142 static void input_ground(struct input_ctx *); 143 static void input_enter_dcs(struct input_ctx *); 144 static void input_enter_osc(struct input_ctx *); 145 static void input_exit_osc(struct input_ctx *); 146 static void input_enter_apc(struct input_ctx *); 147 static void input_exit_apc(struct input_ctx *); 148 static void input_enter_rename(struct input_ctx *); 149 static void input_exit_rename(struct input_ctx *); 150 151 /* Input state handlers. */ 152 static int input_print(struct input_ctx *); 153 static int input_intermediate(struct input_ctx *); 154 static int input_parameter(struct input_ctx *); 155 static int input_input(struct input_ctx *); 156 static int input_c0_dispatch(struct input_ctx *); 157 static int input_esc_dispatch(struct input_ctx *); 158 static int input_csi_dispatch(struct input_ctx *); 159 static void input_csi_dispatch_rm(struct input_ctx *); 160 static void input_csi_dispatch_rm_private(struct input_ctx *); 161 static void input_csi_dispatch_sm(struct input_ctx *); 162 static void input_csi_dispatch_sm_private(struct input_ctx *); 163 static void input_csi_dispatch_winops(struct input_ctx *); 164 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 165 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 166 static void input_csi_dispatch_sgr(struct input_ctx *); 167 static int input_dcs_dispatch(struct input_ctx *); 168 static int input_top_bit_set(struct input_ctx *); 169 static int input_end_bel(struct input_ctx *); 170 171 /* Command table comparison function. */ 172 static int input_table_compare(const void *, const void *); 173 174 /* Command table entry. */ 175 struct input_table_entry { 176 int ch; 177 const char *interm; 178 int type; 179 }; 180 181 /* Escape commands. */ 182 enum input_esc_type { 183 INPUT_ESC_DECALN, 184 INPUT_ESC_DECKPAM, 185 INPUT_ESC_DECKPNM, 186 INPUT_ESC_DECRC, 187 INPUT_ESC_DECSC, 188 INPUT_ESC_HTS, 189 INPUT_ESC_IND, 190 INPUT_ESC_NEL, 191 INPUT_ESC_RI, 192 INPUT_ESC_RIS, 193 INPUT_ESC_SCSG0_OFF, 194 INPUT_ESC_SCSG0_ON, 195 INPUT_ESC_SCSG1_OFF, 196 INPUT_ESC_SCSG1_ON, 197 INPUT_ESC_ST, 198 }; 199 200 /* Escape command table. */ 201 static const struct input_table_entry input_esc_table[] = { 202 { '0', "(", INPUT_ESC_SCSG0_ON }, 203 { '0', ")", INPUT_ESC_SCSG1_ON }, 204 { '7', "", INPUT_ESC_DECSC }, 205 { '8', "", INPUT_ESC_DECRC }, 206 { '8', "#", INPUT_ESC_DECALN }, 207 { '=', "", INPUT_ESC_DECKPAM }, 208 { '>', "", INPUT_ESC_DECKPNM }, 209 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 210 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 211 { 'D', "", INPUT_ESC_IND }, 212 { 'E', "", INPUT_ESC_NEL }, 213 { 'H', "", INPUT_ESC_HTS }, 214 { 'M', "", INPUT_ESC_RI }, 215 { '\\', "", INPUT_ESC_ST }, 216 { 'c', "", INPUT_ESC_RIS }, 217 }; 218 219 /* Control (CSI) commands. */ 220 enum input_csi_type { 221 INPUT_CSI_CBT, 222 INPUT_CSI_CNL, 223 INPUT_CSI_CPL, 224 INPUT_CSI_CUB, 225 INPUT_CSI_CUD, 226 INPUT_CSI_CUF, 227 INPUT_CSI_CUP, 228 INPUT_CSI_CUU, 229 INPUT_CSI_DA, 230 INPUT_CSI_DA_TWO, 231 INPUT_CSI_DCH, 232 INPUT_CSI_DECSCUSR, 233 INPUT_CSI_DECSTBM, 234 INPUT_CSI_DL, 235 INPUT_CSI_DSR, 236 INPUT_CSI_ECH, 237 INPUT_CSI_ED, 238 INPUT_CSI_EL, 239 INPUT_CSI_HPA, 240 INPUT_CSI_ICH, 241 INPUT_CSI_IL, 242 INPUT_CSI_RCP, 243 INPUT_CSI_REP, 244 INPUT_CSI_RM, 245 INPUT_CSI_RM_PRIVATE, 246 INPUT_CSI_SCP, 247 INPUT_CSI_SD, 248 INPUT_CSI_SGR, 249 INPUT_CSI_SM, 250 INPUT_CSI_SM_PRIVATE, 251 INPUT_CSI_SU, 252 INPUT_CSI_TBC, 253 INPUT_CSI_VPA, 254 INPUT_CSI_WINOPS, 255 }; 256 257 /* Control (CSI) command table. */ 258 static const struct input_table_entry input_csi_table[] = { 259 { '@', "", INPUT_CSI_ICH }, 260 { 'A', "", INPUT_CSI_CUU }, 261 { 'B', "", INPUT_CSI_CUD }, 262 { 'C', "", INPUT_CSI_CUF }, 263 { 'D', "", INPUT_CSI_CUB }, 264 { 'E', "", INPUT_CSI_CNL }, 265 { 'F', "", INPUT_CSI_CPL }, 266 { 'G', "", INPUT_CSI_HPA }, 267 { 'H', "", INPUT_CSI_CUP }, 268 { 'J', "", INPUT_CSI_ED }, 269 { 'K', "", INPUT_CSI_EL }, 270 { 'L', "", INPUT_CSI_IL }, 271 { 'M', "", INPUT_CSI_DL }, 272 { 'P', "", INPUT_CSI_DCH }, 273 { 'S', "", INPUT_CSI_SU }, 274 { 'T', "", INPUT_CSI_SD }, 275 { 'X', "", INPUT_CSI_ECH }, 276 { 'Z', "", INPUT_CSI_CBT }, 277 { '`', "", INPUT_CSI_HPA }, 278 { 'b', "", INPUT_CSI_REP }, 279 { 'c', "", INPUT_CSI_DA }, 280 { 'c', ">", INPUT_CSI_DA_TWO }, 281 { 'd', "", INPUT_CSI_VPA }, 282 { 'f', "", INPUT_CSI_CUP }, 283 { 'g', "", INPUT_CSI_TBC }, 284 { 'h', "", INPUT_CSI_SM }, 285 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 286 { 'l', "", INPUT_CSI_RM }, 287 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 288 { 'm', "", INPUT_CSI_SGR }, 289 { 'n', "", INPUT_CSI_DSR }, 290 { 'q', " ", INPUT_CSI_DECSCUSR }, 291 { 'r', "", INPUT_CSI_DECSTBM }, 292 { 's', "", INPUT_CSI_SCP }, 293 { 't', "", INPUT_CSI_WINOPS }, 294 { 'u', "", INPUT_CSI_RCP }, 295 }; 296 297 /* Input transition. */ 298 struct input_transition { 299 int first; 300 int last; 301 302 int (*handler)(struct input_ctx *); 303 const struct input_state *state; 304 }; 305 306 /* Input state. */ 307 struct input_state { 308 const char *name; 309 void (*enter)(struct input_ctx *); 310 void (*exit)(struct input_ctx *); 311 const struct input_transition *transitions; 312 }; 313 314 /* State transitions available from all states. */ 315 #define INPUT_STATE_ANYWHERE \ 316 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 317 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 318 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 319 320 /* Forward declarations of state tables. */ 321 static const struct input_transition input_state_ground_table[]; 322 static const struct input_transition input_state_esc_enter_table[]; 323 static const struct input_transition input_state_esc_intermediate_table[]; 324 static const struct input_transition input_state_csi_enter_table[]; 325 static const struct input_transition input_state_csi_parameter_table[]; 326 static const struct input_transition input_state_csi_intermediate_table[]; 327 static const struct input_transition input_state_csi_ignore_table[]; 328 static const struct input_transition input_state_dcs_enter_table[]; 329 static const struct input_transition input_state_dcs_parameter_table[]; 330 static const struct input_transition input_state_dcs_intermediate_table[]; 331 static const struct input_transition input_state_dcs_handler_table[]; 332 static const struct input_transition input_state_dcs_escape_table[]; 333 static const struct input_transition input_state_dcs_ignore_table[]; 334 static const struct input_transition input_state_osc_string_table[]; 335 static const struct input_transition input_state_apc_string_table[]; 336 static const struct input_transition input_state_rename_string_table[]; 337 static const struct input_transition input_state_consume_st_table[]; 338 339 /* ground state definition. */ 340 static const struct input_state input_state_ground = { 341 "ground", 342 input_ground, NULL, 343 input_state_ground_table 344 }; 345 346 /* esc_enter state definition. */ 347 static const struct input_state input_state_esc_enter = { 348 "esc_enter", 349 input_clear, NULL, 350 input_state_esc_enter_table 351 }; 352 353 /* esc_intermediate state definition. */ 354 static const struct input_state input_state_esc_intermediate = { 355 "esc_intermediate", 356 NULL, NULL, 357 input_state_esc_intermediate_table 358 }; 359 360 /* csi_enter state definition. */ 361 static const struct input_state input_state_csi_enter = { 362 "csi_enter", 363 input_clear, NULL, 364 input_state_csi_enter_table 365 }; 366 367 /* csi_parameter state definition. */ 368 static const struct input_state input_state_csi_parameter = { 369 "csi_parameter", 370 NULL, NULL, 371 input_state_csi_parameter_table 372 }; 373 374 /* csi_intermediate state definition. */ 375 static const struct input_state input_state_csi_intermediate = { 376 "csi_intermediate", 377 NULL, NULL, 378 input_state_csi_intermediate_table 379 }; 380 381 /* csi_ignore state definition. */ 382 static const struct input_state input_state_csi_ignore = { 383 "csi_ignore", 384 NULL, NULL, 385 input_state_csi_ignore_table 386 }; 387 388 /* dcs_enter state definition. */ 389 static const struct input_state input_state_dcs_enter = { 390 "dcs_enter", 391 input_enter_dcs, NULL, 392 input_state_dcs_enter_table 393 }; 394 395 /* dcs_parameter state definition. */ 396 static const struct input_state input_state_dcs_parameter = { 397 "dcs_parameter", 398 NULL, NULL, 399 input_state_dcs_parameter_table 400 }; 401 402 /* dcs_intermediate state definition. */ 403 static const struct input_state input_state_dcs_intermediate = { 404 "dcs_intermediate", 405 NULL, NULL, 406 input_state_dcs_intermediate_table 407 }; 408 409 /* dcs_handler state definition. */ 410 static const struct input_state input_state_dcs_handler = { 411 "dcs_handler", 412 NULL, NULL, 413 input_state_dcs_handler_table 414 }; 415 416 /* dcs_escape state definition. */ 417 static const struct input_state input_state_dcs_escape = { 418 "dcs_escape", 419 NULL, NULL, 420 input_state_dcs_escape_table 421 }; 422 423 /* dcs_ignore state definition. */ 424 static const struct input_state input_state_dcs_ignore = { 425 "dcs_ignore", 426 NULL, NULL, 427 input_state_dcs_ignore_table 428 }; 429 430 /* osc_string state definition. */ 431 static const struct input_state input_state_osc_string = { 432 "osc_string", 433 input_enter_osc, input_exit_osc, 434 input_state_osc_string_table 435 }; 436 437 /* apc_string state definition. */ 438 static const struct input_state input_state_apc_string = { 439 "apc_string", 440 input_enter_apc, input_exit_apc, 441 input_state_apc_string_table 442 }; 443 444 /* rename_string state definition. */ 445 static const struct input_state input_state_rename_string = { 446 "rename_string", 447 input_enter_rename, input_exit_rename, 448 input_state_rename_string_table 449 }; 450 451 /* consume_st state definition. */ 452 static const struct input_state input_state_consume_st = { 453 "consume_st", 454 input_enter_rename, NULL, /* rename also waits for ST */ 455 input_state_consume_st_table 456 }; 457 458 /* ground state table. */ 459 static const struct input_transition input_state_ground_table[] = { 460 INPUT_STATE_ANYWHERE, 461 462 { 0x00, 0x17, input_c0_dispatch, NULL }, 463 { 0x19, 0x19, input_c0_dispatch, NULL }, 464 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 465 { 0x20, 0x7e, input_print, NULL }, 466 { 0x7f, 0x7f, NULL, NULL }, 467 { 0x80, 0xff, input_top_bit_set, NULL }, 468 469 { -1, -1, NULL, NULL } 470 }; 471 472 /* esc_enter state table. */ 473 static const struct input_transition input_state_esc_enter_table[] = { 474 INPUT_STATE_ANYWHERE, 475 476 { 0x00, 0x17, input_c0_dispatch, NULL }, 477 { 0x19, 0x19, input_c0_dispatch, NULL }, 478 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 479 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 480 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 481 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 482 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 483 { 0x58, 0x58, NULL, &input_state_consume_st }, 484 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 485 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 486 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 487 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 488 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 489 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 490 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 491 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 492 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 493 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 494 { 0x7f, 0xff, NULL, NULL }, 495 496 { -1, -1, NULL, NULL } 497 }; 498 499 /* esc_intermediate state table. */ 500 static const struct input_transition input_state_esc_intermediate_table[] = { 501 INPUT_STATE_ANYWHERE, 502 503 { 0x00, 0x17, input_c0_dispatch, NULL }, 504 { 0x19, 0x19, input_c0_dispatch, NULL }, 505 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 506 { 0x20, 0x2f, input_intermediate, NULL }, 507 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 508 { 0x7f, 0xff, NULL, NULL }, 509 510 { -1, -1, NULL, NULL } 511 }; 512 513 /* csi_enter state table. */ 514 static const struct input_transition input_state_csi_enter_table[] = { 515 INPUT_STATE_ANYWHERE, 516 517 { 0x00, 0x17, input_c0_dispatch, NULL }, 518 { 0x19, 0x19, input_c0_dispatch, NULL }, 519 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 520 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 521 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 522 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 523 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 524 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 525 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 526 { 0x7f, 0xff, NULL, NULL }, 527 528 { -1, -1, NULL, NULL } 529 }; 530 531 /* csi_parameter state table. */ 532 static const struct input_transition input_state_csi_parameter_table[] = { 533 INPUT_STATE_ANYWHERE, 534 535 { 0x00, 0x17, input_c0_dispatch, NULL }, 536 { 0x19, 0x19, input_c0_dispatch, NULL }, 537 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 538 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 539 { 0x30, 0x39, input_parameter, NULL }, 540 { 0x3a, 0x3a, input_parameter, NULL }, 541 { 0x3b, 0x3b, input_parameter, NULL }, 542 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 543 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 544 { 0x7f, 0xff, NULL, NULL }, 545 546 { -1, -1, NULL, NULL } 547 }; 548 549 /* csi_intermediate state table. */ 550 static const struct input_transition input_state_csi_intermediate_table[] = { 551 INPUT_STATE_ANYWHERE, 552 553 { 0x00, 0x17, input_c0_dispatch, NULL }, 554 { 0x19, 0x19, input_c0_dispatch, NULL }, 555 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 556 { 0x20, 0x2f, input_intermediate, NULL }, 557 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 558 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 559 { 0x7f, 0xff, NULL, NULL }, 560 561 { -1, -1, NULL, NULL } 562 }; 563 564 /* csi_ignore state table. */ 565 static const struct input_transition input_state_csi_ignore_table[] = { 566 INPUT_STATE_ANYWHERE, 567 568 { 0x00, 0x17, input_c0_dispatch, NULL }, 569 { 0x19, 0x19, input_c0_dispatch, NULL }, 570 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 571 { 0x20, 0x3f, NULL, NULL }, 572 { 0x40, 0x7e, NULL, &input_state_ground }, 573 { 0x7f, 0xff, NULL, NULL }, 574 575 { -1, -1, NULL, NULL } 576 }; 577 578 /* dcs_enter state table. */ 579 static const struct input_transition input_state_dcs_enter_table[] = { 580 INPUT_STATE_ANYWHERE, 581 582 { 0x00, 0x17, NULL, NULL }, 583 { 0x19, 0x19, NULL, NULL }, 584 { 0x1c, 0x1f, NULL, NULL }, 585 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 586 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 587 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 588 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 589 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 590 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 591 { 0x7f, 0xff, NULL, NULL }, 592 593 { -1, -1, NULL, NULL } 594 }; 595 596 /* dcs_parameter state table. */ 597 static const struct input_transition input_state_dcs_parameter_table[] = { 598 INPUT_STATE_ANYWHERE, 599 600 { 0x00, 0x17, NULL, NULL }, 601 { 0x19, 0x19, NULL, NULL }, 602 { 0x1c, 0x1f, NULL, NULL }, 603 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 604 { 0x30, 0x39, input_parameter, NULL }, 605 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 606 { 0x3b, 0x3b, input_parameter, NULL }, 607 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 608 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 609 { 0x7f, 0xff, NULL, NULL }, 610 611 { -1, -1, NULL, NULL } 612 }; 613 614 /* dcs_intermediate state table. */ 615 static const struct input_transition input_state_dcs_intermediate_table[] = { 616 INPUT_STATE_ANYWHERE, 617 618 { 0x00, 0x17, NULL, NULL }, 619 { 0x19, 0x19, NULL, NULL }, 620 { 0x1c, 0x1f, NULL, NULL }, 621 { 0x20, 0x2f, input_intermediate, NULL }, 622 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 623 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 624 { 0x7f, 0xff, NULL, NULL }, 625 626 { -1, -1, NULL, NULL } 627 }; 628 629 /* dcs_handler state table. */ 630 static const struct input_transition input_state_dcs_handler_table[] = { 631 /* No INPUT_STATE_ANYWHERE */ 632 633 { 0x00, 0x1a, input_input, NULL }, 634 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 635 { 0x1c, 0xff, input_input, NULL }, 636 637 { -1, -1, NULL, NULL } 638 }; 639 640 /* dcs_escape state table. */ 641 static const struct input_transition input_state_dcs_escape_table[] = { 642 /* No INPUT_STATE_ANYWHERE */ 643 644 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 645 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 646 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 647 648 { -1, -1, NULL, NULL } 649 }; 650 651 /* dcs_ignore state table. */ 652 static const struct input_transition input_state_dcs_ignore_table[] = { 653 INPUT_STATE_ANYWHERE, 654 655 { 0x00, 0x17, NULL, NULL }, 656 { 0x19, 0x19, NULL, NULL }, 657 { 0x1c, 0x1f, NULL, NULL }, 658 { 0x20, 0xff, NULL, NULL }, 659 660 { -1, -1, NULL, NULL } 661 }; 662 663 /* osc_string state table. */ 664 static const struct input_transition input_state_osc_string_table[] = { 665 INPUT_STATE_ANYWHERE, 666 667 { 0x00, 0x06, NULL, NULL }, 668 { 0x07, 0x07, input_end_bel, &input_state_ground }, 669 { 0x08, 0x17, NULL, NULL }, 670 { 0x19, 0x19, NULL, NULL }, 671 { 0x1c, 0x1f, NULL, NULL }, 672 { 0x20, 0xff, input_input, NULL }, 673 674 { -1, -1, NULL, NULL } 675 }; 676 677 /* apc_string state table. */ 678 static const struct input_transition input_state_apc_string_table[] = { 679 INPUT_STATE_ANYWHERE, 680 681 { 0x00, 0x17, NULL, NULL }, 682 { 0x19, 0x19, NULL, NULL }, 683 { 0x1c, 0x1f, NULL, NULL }, 684 { 0x20, 0xff, input_input, NULL }, 685 686 { -1, -1, NULL, NULL } 687 }; 688 689 /* rename_string state table. */ 690 static const struct input_transition input_state_rename_string_table[] = { 691 INPUT_STATE_ANYWHERE, 692 693 { 0x00, 0x17, NULL, NULL }, 694 { 0x19, 0x19, NULL, NULL }, 695 { 0x1c, 0x1f, NULL, NULL }, 696 { 0x20, 0xff, input_input, NULL }, 697 698 { -1, -1, NULL, NULL } 699 }; 700 701 /* consume_st state table. */ 702 static const struct input_transition input_state_consume_st_table[] = { 703 INPUT_STATE_ANYWHERE, 704 705 { 0x00, 0x17, NULL, NULL }, 706 { 0x19, 0x19, NULL, NULL }, 707 { 0x1c, 0x1f, NULL, NULL }, 708 { 0x20, 0xff, NULL, NULL }, 709 710 { -1, -1, NULL, NULL } 711 }; 712 713 /* Input table compare. */ 714 static int 715 input_table_compare(const void *key, const void *value) 716 { 717 const struct input_ctx *ictx = key; 718 const struct input_table_entry *entry = value; 719 720 if (ictx->ch != entry->ch) 721 return (ictx->ch - entry->ch); 722 return (strcmp((const char *)ictx->interm_buf, entry->interm)); 723 } 724 725 /* 726 * Timer - if this expires then have been waiting for a terminator for too 727 * long, so reset to ground. 728 */ 729 static void 730 input_timer_callback(__unused int fd, __unused short events, void *arg) 731 { 732 struct input_ctx *ictx = arg; 733 struct window_pane *wp = ictx->wp; 734 735 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 736 input_reset(wp, 0); 737 } 738 739 /* Start the timer. */ 740 static void 741 input_start_timer(struct input_ctx *ictx) 742 { 743 struct timeval tv = { .tv_usec = 100000 }; 744 745 event_del(&ictx->timer); 746 event_add(&ictx->timer, &tv); 747 } 748 749 /* Reset cell state to default. */ 750 static void 751 input_reset_cell(struct input_ctx *ictx) 752 { 753 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 754 ictx->cell.set = 0; 755 ictx->cell.g0set = ictx->cell.g1set = 0; 756 757 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 758 ictx->old_cx = 0; 759 ictx->old_cy = 0; 760 } 761 762 /* Save screen state. */ 763 static void 764 input_save_state(struct input_ctx *ictx) 765 { 766 struct screen_write_ctx *sctx = &ictx->ctx; 767 struct screen *s = sctx->s; 768 769 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 770 ictx->old_cx = s->cx; 771 ictx->old_cy = s->cy; 772 ictx->old_mode = s->mode; 773 } 774 775 static void 776 input_restore_state(struct input_ctx *ictx) 777 { 778 struct screen_write_ctx *sctx = &ictx->ctx; 779 780 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 781 if (ictx->old_mode & MODE_ORIGIN) 782 screen_write_mode_set(sctx, MODE_ORIGIN); 783 else 784 screen_write_mode_clear(sctx, MODE_ORIGIN); 785 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 786 } 787 788 /* Initialise input parser. */ 789 void 790 input_init(struct window_pane *wp) 791 { 792 struct input_ctx *ictx; 793 794 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 795 796 ictx->input_space = INPUT_BUF_START; 797 ictx->input_buf = xmalloc(INPUT_BUF_START); 798 799 ictx->since_ground = evbuffer_new(); 800 if (ictx->since_ground == NULL) 801 fatalx("out of memory"); 802 803 evtimer_set(&ictx->timer, input_timer_callback, ictx); 804 805 input_reset(wp, 0); 806 } 807 808 /* Destroy input parser. */ 809 void 810 input_free(struct window_pane *wp) 811 { 812 struct input_ctx *ictx = wp->ictx; 813 u_int i; 814 815 for (i = 0; i < ictx->param_list_len; i++) { 816 if (ictx->param_list[i].type == INPUT_STRING) 817 free(ictx->param_list[i].str); 818 } 819 820 event_del(&ictx->timer); 821 822 free(ictx->input_buf); 823 evbuffer_free(ictx->since_ground); 824 825 free(ictx); 826 wp->ictx = NULL; 827 } 828 829 /* Reset input state and clear screen. */ 830 void 831 input_reset(struct window_pane *wp, int clear) 832 { 833 struct input_ctx *ictx = wp->ictx; 834 struct screen_write_ctx *sctx = &ictx->ctx; 835 836 input_reset_cell(ictx); 837 838 if (clear) { 839 if (TAILQ_EMPTY(&wp->modes)) 840 screen_write_start(sctx, wp, &wp->base); 841 else 842 screen_write_start(sctx, NULL, &wp->base); 843 screen_write_reset(sctx); 844 screen_write_stop(sctx); 845 } 846 847 input_clear(ictx); 848 849 ictx->last = -1; 850 851 ictx->state = &input_state_ground; 852 ictx->flags = 0; 853 } 854 855 /* Return pending data. */ 856 struct evbuffer * 857 input_pending(struct window_pane *wp) 858 { 859 return (wp->ictx->since_ground); 860 } 861 862 /* Change input state. */ 863 static void 864 input_set_state(struct window_pane *wp, const struct input_transition *itr) 865 { 866 struct input_ctx *ictx = wp->ictx; 867 868 if (ictx->state->exit != NULL) 869 ictx->state->exit(ictx); 870 ictx->state = itr->state; 871 if (ictx->state->enter != NULL) 872 ictx->state->enter(ictx); 873 } 874 875 /* Parse input. */ 876 void 877 input_parse(struct window_pane *wp) 878 { 879 struct evbuffer *evb = wp->event->input; 880 881 input_parse_buffer(wp, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb)); 882 evbuffer_drain(evb, EVBUFFER_LENGTH(evb)); 883 } 884 885 /* Parse given input. */ 886 void 887 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 888 { 889 struct input_ctx *ictx = wp->ictx; 890 struct screen_write_ctx *sctx = &ictx->ctx; 891 const struct input_transition *itr; 892 size_t off = 0; 893 894 if (len == 0) 895 return; 896 897 window_update_activity(wp->window); 898 wp->flags |= PANE_CHANGED; 899 notify_input(wp, buf, len); 900 901 /* 902 * Open the screen. Use NULL wp if there is a mode set as don't want to 903 * update the tty. 904 */ 905 if (TAILQ_EMPTY(&wp->modes)) 906 screen_write_start(sctx, wp, &wp->base); 907 else 908 screen_write_start(sctx, NULL, &wp->base); 909 ictx->wp = wp; 910 911 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 912 ictx->state->name, len, (int)len, buf); 913 914 /* Parse the input. */ 915 while (off < len) { 916 ictx->ch = buf[off++]; 917 918 /* Find the transition. */ 919 itr = ictx->state->transitions; 920 while (itr->first != -1 && itr->last != -1) { 921 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 922 break; 923 itr++; 924 } 925 if (itr->first == -1 || itr->last == -1) { 926 /* No transition? Eh? */ 927 fatalx("no transition from state"); 928 } 929 930 /* 931 * Any state except print stops the current collection. This is 932 * an optimization to avoid checking if the attributes have 933 * changed for every character. It will stop unnecessarily for 934 * sequences that don't make a terminal change, but they should 935 * be the minority. 936 */ 937 if (itr->handler != input_print) 938 screen_write_collect_end(sctx); 939 940 /* 941 * Execute the handler, if any. Don't switch state if it 942 * returns non-zero. 943 */ 944 if (itr->handler != NULL && itr->handler(ictx) != 0) 945 continue; 946 947 /* And switch state, if necessary. */ 948 if (itr->state != NULL) 949 input_set_state(wp, itr); 950 951 /* If not in ground state, save input. */ 952 if (ictx->state != &input_state_ground) 953 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 954 } 955 956 /* Close the screen. */ 957 screen_write_stop(sctx); 958 } 959 960 /* Split the parameter list (if any). */ 961 static int 962 input_split(struct input_ctx *ictx) 963 { 964 const char *errstr; 965 char *ptr, *out; 966 struct input_param *ip; 967 u_int i; 968 969 for (i = 0; i < ictx->param_list_len; i++) { 970 if (ictx->param_list[i].type == INPUT_STRING) 971 free(ictx->param_list[i].str); 972 } 973 ictx->param_list_len = 0; 974 975 if (ictx->param_len == 0) 976 return (0); 977 ip = &ictx->param_list[0]; 978 979 ptr = (char *)ictx->param_buf; 980 while ((out = strsep(&ptr, ";")) != NULL) { 981 if (*out == '\0') 982 ip->type = INPUT_MISSING; 983 else { 984 if (strchr(out, ':') != NULL) { 985 ip->type = INPUT_STRING; 986 ip->str = xstrdup(out); 987 } else { 988 ip->type = INPUT_NUMBER; 989 ip->num = strtonum(out, 0, INT_MAX, &errstr); 990 if (errstr != NULL) 991 return (-1); 992 } 993 } 994 ip = &ictx->param_list[++ictx->param_list_len]; 995 if (ictx->param_list_len == nitems(ictx->param_list)) 996 return (-1); 997 } 998 999 for (i = 0; i < ictx->param_list_len; i++) { 1000 ip = &ictx->param_list[i]; 1001 if (ip->type == INPUT_MISSING) 1002 log_debug("parameter %u: missing", i); 1003 else if (ip->type == INPUT_STRING) 1004 log_debug("parameter %u: string %s", i, ip->str); 1005 else if (ip->type == INPUT_NUMBER) 1006 log_debug("parameter %u: number %d", i, ip->num); 1007 } 1008 1009 return (0); 1010 } 1011 1012 /* Get an argument or return default value. */ 1013 static int 1014 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1015 { 1016 struct input_param *ip; 1017 int retval; 1018 1019 if (validx >= ictx->param_list_len) 1020 return (defval); 1021 ip = &ictx->param_list[validx]; 1022 if (ip->type == INPUT_MISSING) 1023 return (defval); 1024 if (ip->type == INPUT_STRING) 1025 return (-1); 1026 retval = ip->num; 1027 if (retval < minval) 1028 return (minval); 1029 return (retval); 1030 } 1031 1032 /* Reply to terminal query. */ 1033 static void 1034 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1035 { 1036 va_list ap; 1037 char *reply; 1038 1039 va_start(ap, fmt); 1040 xvasprintf(&reply, fmt, ap); 1041 va_end(ap); 1042 1043 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 1044 free(reply); 1045 } 1046 1047 /* Clear saved state. */ 1048 static void 1049 input_clear(struct input_ctx *ictx) 1050 { 1051 event_del(&ictx->timer); 1052 1053 *ictx->interm_buf = '\0'; 1054 ictx->interm_len = 0; 1055 1056 *ictx->param_buf = '\0'; 1057 ictx->param_len = 0; 1058 1059 *ictx->input_buf = '\0'; 1060 ictx->input_len = 0; 1061 1062 ictx->input_end = INPUT_END_ST; 1063 1064 ictx->flags &= ~INPUT_DISCARD; 1065 } 1066 1067 /* Reset for ground state. */ 1068 static void 1069 input_ground(struct input_ctx *ictx) 1070 { 1071 event_del(&ictx->timer); 1072 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1073 1074 if (ictx->input_space > INPUT_BUF_START) { 1075 ictx->input_space = INPUT_BUF_START; 1076 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1077 } 1078 } 1079 1080 /* Output this character to the screen. */ 1081 static int 1082 input_print(struct input_ctx *ictx) 1083 { 1084 struct screen_write_ctx *sctx = &ictx->ctx; 1085 int set; 1086 1087 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1088 1089 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1090 if (set == 1) 1091 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1092 else 1093 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1094 1095 utf8_set(&ictx->cell.cell.data, ictx->ch); 1096 screen_write_collect_add(sctx, &ictx->cell.cell); 1097 ictx->last = ictx->ch; 1098 1099 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1100 1101 return (0); 1102 } 1103 1104 /* Collect intermediate string. */ 1105 static int 1106 input_intermediate(struct input_ctx *ictx) 1107 { 1108 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1109 ictx->flags |= INPUT_DISCARD; 1110 else { 1111 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1112 ictx->interm_buf[ictx->interm_len] = '\0'; 1113 } 1114 1115 return (0); 1116 } 1117 1118 /* Collect parameter string. */ 1119 static int 1120 input_parameter(struct input_ctx *ictx) 1121 { 1122 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1123 ictx->flags |= INPUT_DISCARD; 1124 else { 1125 ictx->param_buf[ictx->param_len++] = ictx->ch; 1126 ictx->param_buf[ictx->param_len] = '\0'; 1127 } 1128 1129 return (0); 1130 } 1131 1132 /* Collect input string. */ 1133 static int 1134 input_input(struct input_ctx *ictx) 1135 { 1136 size_t available; 1137 1138 available = ictx->input_space; 1139 while (ictx->input_len + 1 >= available) { 1140 available *= 2; 1141 if (available > INPUT_BUF_LIMIT) { 1142 ictx->flags |= INPUT_DISCARD; 1143 return (0); 1144 } 1145 ictx->input_buf = xrealloc(ictx->input_buf, available); 1146 ictx->input_space = available; 1147 } 1148 ictx->input_buf[ictx->input_len++] = ictx->ch; 1149 ictx->input_buf[ictx->input_len] = '\0'; 1150 1151 return (0); 1152 } 1153 1154 /* Execute C0 control sequence. */ 1155 static int 1156 input_c0_dispatch(struct input_ctx *ictx) 1157 { 1158 struct screen_write_ctx *sctx = &ictx->ctx; 1159 struct window_pane *wp = ictx->wp; 1160 struct screen *s = sctx->s; 1161 1162 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1163 1164 log_debug("%s: '%c'", __func__, ictx->ch); 1165 1166 switch (ictx->ch) { 1167 case '\000': /* NUL */ 1168 break; 1169 case '\007': /* BEL */ 1170 alerts_queue(wp->window, WINDOW_BELL); 1171 break; 1172 case '\010': /* BS */ 1173 screen_write_backspace(sctx); 1174 break; 1175 case '\011': /* HT */ 1176 /* Don't tab beyond the end of the line. */ 1177 if (s->cx >= screen_size_x(s) - 1) 1178 break; 1179 1180 /* Find the next tab point, or use the last column if none. */ 1181 do { 1182 s->cx++; 1183 if (bit_test(s->tabs, s->cx)) 1184 break; 1185 } while (s->cx < screen_size_x(s) - 1); 1186 break; 1187 case '\012': /* LF */ 1188 case '\013': /* VT */ 1189 case '\014': /* FF */ 1190 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1191 if (s->mode & MODE_CRLF) 1192 screen_write_carriagereturn(sctx); 1193 break; 1194 case '\015': /* CR */ 1195 screen_write_carriagereturn(sctx); 1196 break; 1197 case '\016': /* SO */ 1198 ictx->cell.set = 1; 1199 break; 1200 case '\017': /* SI */ 1201 ictx->cell.set = 0; 1202 break; 1203 default: 1204 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1205 break; 1206 } 1207 1208 ictx->last = -1; 1209 return (0); 1210 } 1211 1212 /* Execute escape sequence. */ 1213 static int 1214 input_esc_dispatch(struct input_ctx *ictx) 1215 { 1216 struct screen_write_ctx *sctx = &ictx->ctx; 1217 struct screen *s = sctx->s; 1218 struct input_table_entry *entry; 1219 1220 if (ictx->flags & INPUT_DISCARD) 1221 return (0); 1222 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1223 1224 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1225 sizeof input_esc_table[0], input_table_compare); 1226 if (entry == NULL) { 1227 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1228 return (0); 1229 } 1230 1231 switch (entry->type) { 1232 case INPUT_ESC_RIS: 1233 window_pane_reset_palette(ictx->wp); 1234 input_reset_cell(ictx); 1235 screen_write_reset(sctx); 1236 break; 1237 case INPUT_ESC_IND: 1238 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1239 break; 1240 case INPUT_ESC_NEL: 1241 screen_write_carriagereturn(sctx); 1242 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1243 break; 1244 case INPUT_ESC_HTS: 1245 if (s->cx < screen_size_x(s)) 1246 bit_set(s->tabs, s->cx); 1247 break; 1248 case INPUT_ESC_RI: 1249 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1250 break; 1251 case INPUT_ESC_DECKPAM: 1252 screen_write_mode_set(sctx, MODE_KKEYPAD); 1253 break; 1254 case INPUT_ESC_DECKPNM: 1255 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1256 break; 1257 case INPUT_ESC_DECSC: 1258 input_save_state(ictx); 1259 break; 1260 case INPUT_ESC_DECRC: 1261 input_restore_state(ictx); 1262 break; 1263 case INPUT_ESC_DECALN: 1264 screen_write_alignmenttest(sctx); 1265 break; 1266 case INPUT_ESC_SCSG0_ON: 1267 ictx->cell.g0set = 1; 1268 break; 1269 case INPUT_ESC_SCSG0_OFF: 1270 ictx->cell.g0set = 0; 1271 break; 1272 case INPUT_ESC_SCSG1_ON: 1273 ictx->cell.g1set = 1; 1274 break; 1275 case INPUT_ESC_SCSG1_OFF: 1276 ictx->cell.g1set = 0; 1277 break; 1278 case INPUT_ESC_ST: 1279 /* ST terminates OSC but the state transition already did it. */ 1280 break; 1281 } 1282 1283 ictx->last = -1; 1284 return (0); 1285 } 1286 1287 /* Execute control sequence. */ 1288 static int 1289 input_csi_dispatch(struct input_ctx *ictx) 1290 { 1291 struct screen_write_ctx *sctx = &ictx->ctx; 1292 struct screen *s = sctx->s; 1293 struct input_table_entry *entry; 1294 int i, n, m; 1295 u_int cx, bg = ictx->cell.cell.bg; 1296 1297 if (ictx->flags & INPUT_DISCARD) 1298 return (0); 1299 1300 log_debug("%s: '%c' \"%s\" \"%s\"", 1301 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1302 1303 if (input_split(ictx) != 0) 1304 return (0); 1305 1306 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1307 sizeof input_csi_table[0], input_table_compare); 1308 if (entry == NULL) { 1309 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1310 return (0); 1311 } 1312 1313 switch (entry->type) { 1314 case INPUT_CSI_CBT: 1315 /* Find the previous tab point, n times. */ 1316 cx = s->cx; 1317 if (cx > screen_size_x(s) - 1) 1318 cx = screen_size_x(s) - 1; 1319 n = input_get(ictx, 0, 1, 1); 1320 if (n == -1) 1321 break; 1322 while (cx > 0 && n-- > 0) { 1323 do 1324 cx--; 1325 while (cx > 0 && !bit_test(s->tabs, cx)); 1326 } 1327 s->cx = cx; 1328 break; 1329 case INPUT_CSI_CUB: 1330 n = input_get(ictx, 0, 1, 1); 1331 if (n != -1) 1332 screen_write_cursorleft(sctx, n); 1333 break; 1334 case INPUT_CSI_CUD: 1335 n = input_get(ictx, 0, 1, 1); 1336 if (n != -1) 1337 screen_write_cursordown(sctx, n); 1338 break; 1339 case INPUT_CSI_CUF: 1340 n = input_get(ictx, 0, 1, 1); 1341 if (n != -1) 1342 screen_write_cursorright(sctx, n); 1343 break; 1344 case INPUT_CSI_CUP: 1345 n = input_get(ictx, 0, 1, 1); 1346 m = input_get(ictx, 1, 1, 1); 1347 if (n != -1 && m != -1) 1348 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1349 break; 1350 case INPUT_CSI_WINOPS: 1351 input_csi_dispatch_winops(ictx); 1352 break; 1353 case INPUT_CSI_CUU: 1354 n = input_get(ictx, 0, 1, 1); 1355 if (n != -1) 1356 screen_write_cursorup(sctx, n); 1357 break; 1358 case INPUT_CSI_CNL: 1359 n = input_get(ictx, 0, 1, 1); 1360 if (n != -1) { 1361 screen_write_carriagereturn(sctx); 1362 screen_write_cursordown(sctx, n); 1363 } 1364 break; 1365 case INPUT_CSI_CPL: 1366 n = input_get(ictx, 0, 1, 1); 1367 if (n != -1) { 1368 screen_write_carriagereturn(sctx); 1369 screen_write_cursorup(sctx, n); 1370 } 1371 break; 1372 case INPUT_CSI_DA: 1373 switch (input_get(ictx, 0, 0, 0)) { 1374 case -1: 1375 break; 1376 case 0: 1377 input_reply(ictx, "\033[?1;2c"); 1378 break; 1379 default: 1380 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1381 break; 1382 } 1383 break; 1384 case INPUT_CSI_DA_TWO: 1385 switch (input_get(ictx, 0, 0, 0)) { 1386 case -1: 1387 break; 1388 case 0: 1389 input_reply(ictx, "\033[>84;0;0c"); 1390 break; 1391 default: 1392 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1393 break; 1394 } 1395 break; 1396 case INPUT_CSI_ECH: 1397 n = input_get(ictx, 0, 1, 1); 1398 if (n != -1) 1399 screen_write_clearcharacter(sctx, n, bg); 1400 break; 1401 case INPUT_CSI_DCH: 1402 n = input_get(ictx, 0, 1, 1); 1403 if (n != -1) 1404 screen_write_deletecharacter(sctx, n, bg); 1405 break; 1406 case INPUT_CSI_DECSTBM: 1407 n = input_get(ictx, 0, 1, 1); 1408 m = input_get(ictx, 1, 1, screen_size_y(s)); 1409 if (n != -1 && m != -1) 1410 screen_write_scrollregion(sctx, n - 1, m - 1); 1411 break; 1412 case INPUT_CSI_DL: 1413 n = input_get(ictx, 0, 1, 1); 1414 if (n != -1) 1415 screen_write_deleteline(sctx, n, bg); 1416 break; 1417 case INPUT_CSI_DSR: 1418 switch (input_get(ictx, 0, 0, 0)) { 1419 case -1: 1420 break; 1421 case 5: 1422 input_reply(ictx, "\033[0n"); 1423 break; 1424 case 6: 1425 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1426 break; 1427 default: 1428 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1429 break; 1430 } 1431 break; 1432 case INPUT_CSI_ED: 1433 switch (input_get(ictx, 0, 0, 0)) { 1434 case -1: 1435 break; 1436 case 0: 1437 screen_write_clearendofscreen(sctx, bg); 1438 break; 1439 case 1: 1440 screen_write_clearstartofscreen(sctx, bg); 1441 break; 1442 case 2: 1443 screen_write_clearscreen(sctx, bg); 1444 break; 1445 case 3: 1446 if (input_get(ictx, 1, 0, 0) == 0) { 1447 /* 1448 * Linux console extension to clear history 1449 * (for example before locking the screen). 1450 */ 1451 screen_write_clearhistory(sctx); 1452 } 1453 break; 1454 default: 1455 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1456 break; 1457 } 1458 break; 1459 case INPUT_CSI_EL: 1460 switch (input_get(ictx, 0, 0, 0)) { 1461 case -1: 1462 break; 1463 case 0: 1464 screen_write_clearendofline(sctx, bg); 1465 break; 1466 case 1: 1467 screen_write_clearstartofline(sctx, bg); 1468 break; 1469 case 2: 1470 screen_write_clearline(sctx, bg); 1471 break; 1472 default: 1473 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1474 break; 1475 } 1476 break; 1477 case INPUT_CSI_HPA: 1478 n = input_get(ictx, 0, 1, 1); 1479 if (n != -1) 1480 screen_write_cursormove(sctx, n - 1, -1, 1); 1481 break; 1482 case INPUT_CSI_ICH: 1483 n = input_get(ictx, 0, 1, 1); 1484 if (n != -1) 1485 screen_write_insertcharacter(sctx, n, bg); 1486 break; 1487 case INPUT_CSI_IL: 1488 n = input_get(ictx, 0, 1, 1); 1489 if (n != -1) 1490 screen_write_insertline(sctx, n, bg); 1491 break; 1492 case INPUT_CSI_REP: 1493 n = input_get(ictx, 0, 1, 1); 1494 if (n == -1) 1495 break; 1496 1497 if (ictx->last == -1) 1498 break; 1499 ictx->ch = ictx->last; 1500 1501 for (i = 0; i < n; i++) 1502 input_print(ictx); 1503 break; 1504 case INPUT_CSI_RCP: 1505 input_restore_state(ictx); 1506 break; 1507 case INPUT_CSI_RM: 1508 input_csi_dispatch_rm(ictx); 1509 break; 1510 case INPUT_CSI_RM_PRIVATE: 1511 input_csi_dispatch_rm_private(ictx); 1512 break; 1513 case INPUT_CSI_SCP: 1514 input_save_state(ictx); 1515 break; 1516 case INPUT_CSI_SGR: 1517 input_csi_dispatch_sgr(ictx); 1518 break; 1519 case INPUT_CSI_SM: 1520 input_csi_dispatch_sm(ictx); 1521 break; 1522 case INPUT_CSI_SM_PRIVATE: 1523 input_csi_dispatch_sm_private(ictx); 1524 break; 1525 case INPUT_CSI_SU: 1526 n = input_get(ictx, 0, 1, 1); 1527 if (n != -1) 1528 screen_write_scrollup(sctx, n, bg); 1529 break; 1530 case INPUT_CSI_SD: 1531 n = input_get(ictx, 0, 1, 1); 1532 if (n != -1) 1533 screen_write_scrolldown(sctx, n, bg); 1534 break; 1535 case INPUT_CSI_TBC: 1536 switch (input_get(ictx, 0, 0, 0)) { 1537 case -1: 1538 break; 1539 case 0: 1540 if (s->cx < screen_size_x(s)) 1541 bit_clear(s->tabs, s->cx); 1542 break; 1543 case 3: 1544 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1545 break; 1546 default: 1547 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1548 break; 1549 } 1550 break; 1551 case INPUT_CSI_VPA: 1552 n = input_get(ictx, 0, 1, 1); 1553 if (n != -1) 1554 screen_write_cursormove(sctx, -1, n - 1, 1); 1555 break; 1556 case INPUT_CSI_DECSCUSR: 1557 n = input_get(ictx, 0, 0, 0); 1558 if (n != -1) 1559 screen_set_cursor_style(s, n); 1560 break; 1561 } 1562 1563 ictx->last = -1; 1564 return (0); 1565 } 1566 1567 /* Handle CSI RM. */ 1568 static void 1569 input_csi_dispatch_rm(struct input_ctx *ictx) 1570 { 1571 struct screen_write_ctx *sctx = &ictx->ctx; 1572 u_int i; 1573 1574 for (i = 0; i < ictx->param_list_len; i++) { 1575 switch (input_get(ictx, i, 0, -1)) { 1576 case -1: 1577 break; 1578 case 4: /* IRM */ 1579 screen_write_mode_clear(sctx, MODE_INSERT); 1580 break; 1581 case 34: 1582 screen_write_mode_set(sctx, MODE_BLINKING); 1583 break; 1584 default: 1585 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1586 break; 1587 } 1588 } 1589 } 1590 1591 /* Handle CSI private RM. */ 1592 static void 1593 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1594 { 1595 struct screen_write_ctx *sctx = &ictx->ctx; 1596 struct window_pane *wp = ictx->wp; 1597 u_int i; 1598 1599 for (i = 0; i < ictx->param_list_len; i++) { 1600 switch (input_get(ictx, i, 0, -1)) { 1601 case -1: 1602 break; 1603 case 1: /* DECCKM */ 1604 screen_write_mode_clear(sctx, MODE_KCURSOR); 1605 break; 1606 case 3: /* DECCOLM */ 1607 screen_write_cursormove(sctx, 0, 0, 1); 1608 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1609 break; 1610 case 6: /* DECOM */ 1611 screen_write_mode_clear(sctx, MODE_ORIGIN); 1612 screen_write_cursormove(sctx, 0, 0, 1); 1613 break; 1614 case 7: /* DECAWM */ 1615 screen_write_mode_clear(sctx, MODE_WRAP); 1616 break; 1617 case 12: 1618 screen_write_mode_clear(sctx, MODE_BLINKING); 1619 break; 1620 case 25: /* TCEM */ 1621 screen_write_mode_clear(sctx, MODE_CURSOR); 1622 break; 1623 case 1000: 1624 case 1001: 1625 case 1002: 1626 case 1003: 1627 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1628 break; 1629 case 1004: 1630 screen_write_mode_clear(sctx, MODE_FOCUSON); 1631 break; 1632 case 1005: 1633 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1634 break; 1635 case 1006: 1636 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1637 break; 1638 case 47: 1639 case 1047: 1640 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1641 break; 1642 case 1049: 1643 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1644 break; 1645 case 2004: 1646 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1647 break; 1648 default: 1649 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1650 break; 1651 } 1652 } 1653 } 1654 1655 /* Handle CSI SM. */ 1656 static void 1657 input_csi_dispatch_sm(struct input_ctx *ictx) 1658 { 1659 struct screen_write_ctx *sctx = &ictx->ctx; 1660 u_int i; 1661 1662 for (i = 0; i < ictx->param_list_len; i++) { 1663 switch (input_get(ictx, i, 0, -1)) { 1664 case -1: 1665 break; 1666 case 4: /* IRM */ 1667 screen_write_mode_set(sctx, MODE_INSERT); 1668 break; 1669 case 34: 1670 screen_write_mode_clear(sctx, MODE_BLINKING); 1671 break; 1672 default: 1673 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1674 break; 1675 } 1676 } 1677 } 1678 1679 /* Handle CSI private SM. */ 1680 static void 1681 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1682 { 1683 struct screen_write_ctx *sctx = &ictx->ctx; 1684 struct window_pane *wp = ictx->wp; 1685 u_int i; 1686 1687 for (i = 0; i < ictx->param_list_len; i++) { 1688 switch (input_get(ictx, i, 0, -1)) { 1689 case -1: 1690 break; 1691 case 1: /* DECCKM */ 1692 screen_write_mode_set(sctx, MODE_KCURSOR); 1693 break; 1694 case 3: /* DECCOLM */ 1695 screen_write_cursormove(sctx, 0, 0, 1); 1696 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1697 break; 1698 case 6: /* DECOM */ 1699 screen_write_mode_set(sctx, MODE_ORIGIN); 1700 screen_write_cursormove(sctx, 0, 0, 1); 1701 break; 1702 case 7: /* DECAWM */ 1703 screen_write_mode_set(sctx, MODE_WRAP); 1704 break; 1705 case 12: 1706 screen_write_mode_set(sctx, MODE_BLINKING); 1707 break; 1708 case 25: /* TCEM */ 1709 screen_write_mode_set(sctx, MODE_CURSOR); 1710 break; 1711 case 1000: 1712 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1713 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1714 break; 1715 case 1002: 1716 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1717 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1718 break; 1719 case 1003: 1720 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1721 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1722 break; 1723 case 1004: 1724 if (sctx->s->mode & MODE_FOCUSON) 1725 break; 1726 screen_write_mode_set(sctx, MODE_FOCUSON); 1727 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1728 break; 1729 case 1005: 1730 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1731 break; 1732 case 1006: 1733 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1734 break; 1735 case 47: 1736 case 1047: 1737 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1738 break; 1739 case 1049: 1740 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1741 break; 1742 case 2004: 1743 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1744 break; 1745 default: 1746 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1747 break; 1748 } 1749 } 1750 } 1751 1752 /* Handle CSI window operations. */ 1753 static void 1754 input_csi_dispatch_winops(struct input_ctx *ictx) 1755 { 1756 struct screen_write_ctx *sctx = &ictx->ctx; 1757 struct window_pane *wp = ictx->wp; 1758 int n, m; 1759 1760 m = 0; 1761 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1762 switch (n) { 1763 case 1: 1764 case 2: 1765 case 5: 1766 case 6: 1767 case 7: 1768 case 11: 1769 case 13: 1770 case 14: 1771 case 19: 1772 case 20: 1773 case 21: 1774 case 24: 1775 break; 1776 case 3: 1777 case 4: 1778 case 8: 1779 m++; 1780 if (input_get(ictx, m, 0, -1) == -1) 1781 return; 1782 /* FALLTHROUGH */ 1783 case 9: 1784 case 10: 1785 m++; 1786 if (input_get(ictx, m, 0, -1) == -1) 1787 return; 1788 break; 1789 case 22: 1790 m++; 1791 switch (input_get(ictx, m, 0, -1)) { 1792 case -1: 1793 return; 1794 case 0: 1795 case 2: 1796 screen_push_title(sctx->s); 1797 break; 1798 } 1799 break; 1800 case 23: 1801 m++; 1802 switch (input_get(ictx, m, 0, -1)) { 1803 case -1: 1804 return; 1805 case 0: 1806 case 2: 1807 screen_pop_title(sctx->s); 1808 server_status_window(ictx->wp->window); 1809 break; 1810 } 1811 break; 1812 case 18: 1813 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1814 break; 1815 default: 1816 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1817 break; 1818 } 1819 m++; 1820 } 1821 } 1822 1823 /* Helper for 256 colour SGR. */ 1824 static int 1825 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1826 { 1827 struct grid_cell *gc = &ictx->cell.cell; 1828 1829 if (c == -1 || c > 255) { 1830 if (fgbg == 38) 1831 gc->fg = 8; 1832 else if (fgbg == 48) 1833 gc->bg = 8; 1834 } else { 1835 if (fgbg == 38) 1836 gc->fg = c | COLOUR_FLAG_256; 1837 else if (fgbg == 48) 1838 gc->bg = c | COLOUR_FLAG_256; 1839 else if (fgbg == 58) 1840 gc->us = c | COLOUR_FLAG_256; 1841 } 1842 return (1); 1843 } 1844 1845 /* Handle CSI SGR for 256 colours. */ 1846 static void 1847 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1848 { 1849 int c; 1850 1851 c = input_get(ictx, (*i) + 1, 0, -1); 1852 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1853 (*i)++; 1854 } 1855 1856 /* Helper for RGB colour SGR. */ 1857 static int 1858 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1859 int b) 1860 { 1861 struct grid_cell *gc = &ictx->cell.cell; 1862 1863 if (r == -1 || r > 255) 1864 return (0); 1865 if (g == -1 || g > 255) 1866 return (0); 1867 if (b == -1 || b > 255) 1868 return (0); 1869 1870 if (fgbg == 38) 1871 gc->fg = colour_join_rgb(r, g, b); 1872 else if (fgbg == 48) 1873 gc->bg = colour_join_rgb(r, g, b); 1874 else if (fgbg == 58) 1875 gc->us = colour_join_rgb(r, g, b); 1876 return (1); 1877 } 1878 1879 /* Handle CSI SGR for RGB colours. */ 1880 static void 1881 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1882 { 1883 int r, g, b; 1884 1885 r = input_get(ictx, (*i) + 1, 0, -1); 1886 g = input_get(ictx, (*i) + 2, 0, -1); 1887 b = input_get(ictx, (*i) + 3, 0, -1); 1888 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1889 (*i) += 3; 1890 } 1891 1892 /* Handle CSI SGR with a ISO parameter. */ 1893 static void 1894 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1895 { 1896 struct grid_cell *gc = &ictx->cell.cell; 1897 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1898 int p[8]; 1899 u_int n; 1900 const char *errstr; 1901 1902 for (n = 0; n < nitems(p); n++) 1903 p[n] = -1; 1904 n = 0; 1905 1906 ptr = copy = xstrdup(s); 1907 while ((out = strsep(&ptr, ":")) != NULL) { 1908 if (*out != '\0') { 1909 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1910 if (errstr != NULL || n == nitems(p)) { 1911 free(copy); 1912 return; 1913 } 1914 } else 1915 n++; 1916 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1917 } 1918 free(copy); 1919 1920 if (n == 0) 1921 return; 1922 if (p[0] == 4) { 1923 if (n != 2) 1924 return; 1925 switch (p[1]) { 1926 case 0: 1927 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1928 break; 1929 case 1: 1930 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1931 gc->attr |= GRID_ATTR_UNDERSCORE; 1932 break; 1933 case 2: 1934 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1935 gc->attr |= GRID_ATTR_UNDERSCORE_2; 1936 break; 1937 case 3: 1938 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1939 gc->attr |= GRID_ATTR_UNDERSCORE_3; 1940 break; 1941 case 4: 1942 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1943 gc->attr |= GRID_ATTR_UNDERSCORE_4; 1944 break; 1945 case 5: 1946 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1947 gc->attr |= GRID_ATTR_UNDERSCORE_5; 1948 break; 1949 } 1950 return; 1951 } 1952 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 1953 return; 1954 switch (p[1]) { 1955 case 2: 1956 if (n < 3) 1957 break; 1958 if (n == 5) 1959 i = 2; 1960 else 1961 i = 3; 1962 if (n < i + 3) 1963 break; 1964 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 1965 p[i + 2]); 1966 break; 1967 case 5: 1968 if (n < 3) 1969 break; 1970 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 1971 break; 1972 } 1973 } 1974 1975 /* Handle CSI SGR. */ 1976 static void 1977 input_csi_dispatch_sgr(struct input_ctx *ictx) 1978 { 1979 struct grid_cell *gc = &ictx->cell.cell; 1980 u_int i; 1981 int n; 1982 1983 if (ictx->param_list_len == 0) { 1984 memcpy(gc, &grid_default_cell, sizeof *gc); 1985 return; 1986 } 1987 1988 for (i = 0; i < ictx->param_list_len; i++) { 1989 if (ictx->param_list[i].type == INPUT_STRING) { 1990 input_csi_dispatch_sgr_colon(ictx, i); 1991 continue; 1992 } 1993 n = input_get(ictx, i, 0, 0); 1994 if (n == -1) 1995 continue; 1996 1997 if (n == 38 || n == 48 || n == 58) { 1998 i++; 1999 switch (input_get(ictx, i, 0, -1)) { 2000 case 2: 2001 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2002 break; 2003 case 5: 2004 input_csi_dispatch_sgr_256(ictx, n, &i); 2005 break; 2006 } 2007 continue; 2008 } 2009 2010 switch (n) { 2011 case 0: 2012 memcpy(gc, &grid_default_cell, sizeof *gc); 2013 break; 2014 case 1: 2015 gc->attr |= GRID_ATTR_BRIGHT; 2016 break; 2017 case 2: 2018 gc->attr |= GRID_ATTR_DIM; 2019 break; 2020 case 3: 2021 gc->attr |= GRID_ATTR_ITALICS; 2022 break; 2023 case 4: 2024 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2025 gc->attr |= GRID_ATTR_UNDERSCORE; 2026 break; 2027 case 5: 2028 gc->attr |= GRID_ATTR_BLINK; 2029 break; 2030 case 7: 2031 gc->attr |= GRID_ATTR_REVERSE; 2032 break; 2033 case 8: 2034 gc->attr |= GRID_ATTR_HIDDEN; 2035 break; 2036 case 9: 2037 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2038 break; 2039 case 22: 2040 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2041 break; 2042 case 23: 2043 gc->attr &= ~GRID_ATTR_ITALICS; 2044 break; 2045 case 24: 2046 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2047 break; 2048 case 25: 2049 gc->attr &= ~GRID_ATTR_BLINK; 2050 break; 2051 case 27: 2052 gc->attr &= ~GRID_ATTR_REVERSE; 2053 break; 2054 case 28: 2055 gc->attr &= ~GRID_ATTR_HIDDEN; 2056 break; 2057 case 29: 2058 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2059 break; 2060 case 30: 2061 case 31: 2062 case 32: 2063 case 33: 2064 case 34: 2065 case 35: 2066 case 36: 2067 case 37: 2068 gc->fg = n - 30; 2069 break; 2070 case 39: 2071 gc->fg = 8; 2072 break; 2073 case 40: 2074 case 41: 2075 case 42: 2076 case 43: 2077 case 44: 2078 case 45: 2079 case 46: 2080 case 47: 2081 gc->bg = n - 40; 2082 break; 2083 case 49: 2084 gc->bg = 8; 2085 break; 2086 case 53: 2087 gc->attr |= GRID_ATTR_OVERLINE; 2088 break; 2089 case 55: 2090 gc->attr &= ~GRID_ATTR_OVERLINE; 2091 break; 2092 case 59: 2093 gc->us = 0; 2094 break; 2095 case 90: 2096 case 91: 2097 case 92: 2098 case 93: 2099 case 94: 2100 case 95: 2101 case 96: 2102 case 97: 2103 gc->fg = n; 2104 break; 2105 case 100: 2106 case 101: 2107 case 102: 2108 case 103: 2109 case 104: 2110 case 105: 2111 case 106: 2112 case 107: 2113 gc->bg = n - 10; 2114 break; 2115 } 2116 } 2117 } 2118 2119 /* End of input with BEL. */ 2120 static int 2121 input_end_bel(struct input_ctx *ictx) 2122 { 2123 log_debug("%s", __func__); 2124 2125 ictx->input_end = INPUT_END_BEL; 2126 2127 return (0); 2128 } 2129 2130 /* DCS string started. */ 2131 static void 2132 input_enter_dcs(struct input_ctx *ictx) 2133 { 2134 log_debug("%s", __func__); 2135 2136 input_clear(ictx); 2137 input_start_timer(ictx); 2138 ictx->last = -1; 2139 } 2140 2141 /* DCS terminator (ST) received. */ 2142 static int 2143 input_dcs_dispatch(struct input_ctx *ictx) 2144 { 2145 struct screen_write_ctx *sctx = &ictx->ctx; 2146 char *buf = (char *)ictx->input_buf; 2147 size_t len = ictx->input_len; 2148 const char prefix[] = "tmux;"; 2149 const u_int prefixlen = (sizeof prefix) - 1; 2150 2151 if (ictx->flags & INPUT_DISCARD) 2152 return (0); 2153 2154 log_debug("%s: \"%s\"", __func__, buf); 2155 2156 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2157 screen_write_rawstring(sctx, (u_char *)buf + prefixlen, len - prefixlen); 2158 2159 return (0); 2160 } 2161 2162 /* OSC string started. */ 2163 static void 2164 input_enter_osc(struct input_ctx *ictx) 2165 { 2166 log_debug("%s", __func__); 2167 2168 input_clear(ictx); 2169 input_start_timer(ictx); 2170 ictx->last = -1; 2171 } 2172 2173 /* OSC terminator (ST) received. */ 2174 static void 2175 input_exit_osc(struct input_ctx *ictx) 2176 { 2177 struct screen_write_ctx *sctx = &ictx->ctx; 2178 char *p = (char *)ictx->input_buf; 2179 u_int option; 2180 2181 if (ictx->flags & INPUT_DISCARD) 2182 return; 2183 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2184 return; 2185 2186 log_debug("%s: \"%s\" (end %s)", __func__, p, 2187 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2188 2189 option = 0; 2190 while (*p >= '0' && *p <= '9') 2191 option = option * 10 + *p++ - '0'; 2192 if (*p == ';') 2193 p++; 2194 2195 switch (option) { 2196 case 0: 2197 case 2: 2198 if (utf8_isvalid(p)) { 2199 screen_set_title(sctx->s, p); 2200 server_status_window(ictx->wp->window); 2201 } 2202 break; 2203 case 4: 2204 input_osc_4(ictx, p); 2205 break; 2206 case 10: 2207 input_osc_10(ictx, p); 2208 break; 2209 case 11: 2210 input_osc_11(ictx, p); 2211 break; 2212 case 12: 2213 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2214 screen_set_cursor_colour(sctx->s, p); 2215 break; 2216 case 52: 2217 input_osc_52(ictx, p); 2218 break; 2219 case 104: 2220 input_osc_104(ictx, p); 2221 break; 2222 case 112: 2223 if (*p == '\0') /* no arguments allowed */ 2224 screen_set_cursor_colour(sctx->s, ""); 2225 break; 2226 default: 2227 log_debug("%s: unknown '%u'", __func__, option); 2228 break; 2229 } 2230 } 2231 2232 /* APC string started. */ 2233 static void 2234 input_enter_apc(struct input_ctx *ictx) 2235 { 2236 log_debug("%s", __func__); 2237 2238 input_clear(ictx); 2239 input_start_timer(ictx); 2240 ictx->last = -1; 2241 } 2242 2243 /* APC terminator (ST) received. */ 2244 static void 2245 input_exit_apc(struct input_ctx *ictx) 2246 { 2247 struct screen_write_ctx *sctx = &ictx->ctx; 2248 char *p = (char *)ictx->input_buf; 2249 2250 if (ictx->flags & INPUT_DISCARD) 2251 return; 2252 log_debug("%s: \"%s\"", __func__, p); 2253 2254 if (!utf8_isvalid(p)) 2255 return; 2256 screen_set_title(sctx->s, p); 2257 server_status_window(ictx->wp->window); 2258 } 2259 2260 /* Rename string started. */ 2261 static void 2262 input_enter_rename(struct input_ctx *ictx) 2263 { 2264 log_debug("%s", __func__); 2265 2266 input_clear(ictx); 2267 input_start_timer(ictx); 2268 ictx->last = -1; 2269 } 2270 2271 /* Rename terminator (ST) received. */ 2272 static void 2273 input_exit_rename(struct input_ctx *ictx) 2274 { 2275 char *p = (char *)ictx->input_buf; 2276 if (ictx->flags & INPUT_DISCARD) 2277 return; 2278 if (!options_get_number(ictx->wp->options, "allow-rename")) 2279 return; 2280 log_debug("%s: \"%s\"", __func__, p); 2281 2282 if (!utf8_isvalid(p)) 2283 return; 2284 window_set_name(ictx->wp->window, p); 2285 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2286 server_status_window(ictx->wp->window); 2287 } 2288 2289 /* Open UTF-8 character. */ 2290 static int 2291 input_top_bit_set(struct input_ctx *ictx) 2292 { 2293 struct screen_write_ctx *sctx = &ictx->ctx; 2294 struct utf8_data *ud = &ictx->utf8data; 2295 2296 ictx->last = -1; 2297 2298 if (!ictx->utf8started) { 2299 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2300 return (0); 2301 ictx->utf8started = 1; 2302 return (0); 2303 } 2304 2305 switch (utf8_append(ud, ictx->ch)) { 2306 case UTF8_MORE: 2307 return (0); 2308 case UTF8_ERROR: 2309 ictx->utf8started = 0; 2310 return (0); 2311 case UTF8_DONE: 2312 break; 2313 } 2314 ictx->utf8started = 0; 2315 2316 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2317 (int)ud->size, ud->data, ud->width); 2318 2319 utf8_copy(&ictx->cell.cell.data, ud); 2320 screen_write_collect_add(sctx, &ictx->cell.cell); 2321 2322 return (0); 2323 } 2324 2325 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2326 static void 2327 input_osc_4(struct input_ctx *ictx, const char *p) 2328 { 2329 struct window_pane *wp = ictx->wp; 2330 char *copy, *s, *next = NULL; 2331 long idx; 2332 u_int r, g, b; 2333 2334 copy = s = xstrdup(p); 2335 while (s != NULL && *s != '\0') { 2336 idx = strtol(s, &next, 10); 2337 if (*next++ != ';') 2338 goto bad; 2339 if (idx < 0 || idx >= 0x100) 2340 goto bad; 2341 2342 s = strsep(&next, ";"); 2343 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2344 s = next; 2345 continue; 2346 } 2347 2348 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2349 s = next; 2350 } 2351 2352 free(copy); 2353 return; 2354 2355 bad: 2356 log_debug("bad OSC 4: %s", p); 2357 free(copy); 2358 } 2359 2360 /* Handle the OSC 10 sequence for setting foreground colour. */ 2361 static void 2362 input_osc_10(struct input_ctx *ictx, const char *p) 2363 { 2364 struct window_pane *wp = ictx->wp; 2365 u_int r, g, b; 2366 char tmp[16]; 2367 2368 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2369 goto bad; 2370 xsnprintf(tmp, sizeof tmp, "fg=#%02x%02x%02x", r, g, b); 2371 options_set_style(wp->options, "window-style", 1, tmp); 2372 options_set_style(wp->options, "window-active-style", 1, tmp); 2373 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2374 2375 return; 2376 2377 bad: 2378 log_debug("bad OSC 10: %s", p); 2379 } 2380 2381 /* Handle the OSC 11 sequence for setting background colour. */ 2382 static void 2383 input_osc_11(struct input_ctx *ictx, const char *p) 2384 { 2385 struct window_pane *wp = ictx->wp; 2386 u_int r, g, b; 2387 char tmp[16]; 2388 2389 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2390 goto bad; 2391 xsnprintf(tmp, sizeof tmp, "bg=#%02x%02x%02x", r, g, b); 2392 options_set_style(wp->options, "window-style", 1, tmp); 2393 options_set_style(wp->options, "window-active-style", 1, tmp); 2394 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2395 2396 return; 2397 2398 bad: 2399 log_debug("bad OSC 11: %s", p); 2400 } 2401 2402 /* Handle the OSC 52 sequence for setting the clipboard. */ 2403 static void 2404 input_osc_52(struct input_ctx *ictx, const char *p) 2405 { 2406 struct window_pane *wp = ictx->wp; 2407 char *end; 2408 const char *buf; 2409 size_t len; 2410 u_char *out; 2411 int outlen, state; 2412 struct screen_write_ctx ctx; 2413 struct paste_buffer *pb; 2414 2415 state = options_get_number(global_options, "set-clipboard"); 2416 if (state != 2) 2417 return; 2418 2419 if ((end = strchr(p, ';')) == NULL) 2420 return; 2421 end++; 2422 if (*end == '\0') 2423 return; 2424 log_debug("%s: %s", __func__, end); 2425 2426 if (strcmp(end, "?") == 0) { 2427 if ((pb = paste_get_top(NULL)) != NULL) { 2428 buf = paste_buffer_data(pb, &len); 2429 outlen = 4 * ((len + 2) / 3) + 1; 2430 out = xmalloc(outlen); 2431 if ((outlen = b64_ntop((const unsigned char *)buf, len, (char *)out, outlen)) == -1) { 2432 free(out); 2433 return; 2434 } 2435 } else { 2436 outlen = 0; 2437 out = NULL; 2438 } 2439 bufferevent_write(wp->event, "\033]52;;", 6); 2440 if (outlen != 0) 2441 bufferevent_write(wp->event, out, outlen); 2442 if (ictx->input_end == INPUT_END_BEL) 2443 bufferevent_write(wp->event, "\007", 1); 2444 else 2445 bufferevent_write(wp->event, "\033\\", 2); 2446 free(out); 2447 return; 2448 } 2449 2450 len = (strlen(end) / 4) * 3; 2451 if (len == 0) 2452 return; 2453 2454 out = xmalloc(len); 2455 if ((outlen = b64_pton(end, out, len)) == -1) { 2456 free(out); 2457 return; 2458 } 2459 2460 screen_write_start(&ctx, wp, NULL); 2461 screen_write_setselection(&ctx, out, outlen); 2462 screen_write_stop(&ctx); 2463 notify_pane("pane-set-clipboard", wp); 2464 2465 paste_add(NULL, (char *)out, outlen); 2466 } 2467 2468 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2469 static void 2470 input_osc_104(struct input_ctx *ictx, const char *p) 2471 { 2472 struct window_pane *wp = ictx->wp; 2473 char *copy, *s; 2474 long idx; 2475 2476 if (*p == '\0') { 2477 window_pane_reset_palette(wp); 2478 return; 2479 } 2480 2481 copy = s = xstrdup(p); 2482 while (*s != '\0') { 2483 idx = strtol(s, &s, 10); 2484 if (*s != '\0' && *s != ';') 2485 goto bad; 2486 if (idx < 0 || idx >= 0x100) 2487 goto bad; 2488 2489 window_pane_unset_palette(wp, idx); 2490 if (*s == ';') 2491 s++; 2492 } 2493 free(copy); 2494 return; 2495 2496 bad: 2497 log_debug("bad OSC 104: %s", p); 2498 free(copy); 2499 } 2500