1 /* $OpenBSD: input.c,v 1.151 2019/05/03 20:44:24 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 * 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_SGR, 248 INPUT_CSI_SM, 249 INPUT_CSI_SM_PRIVATE, 250 INPUT_CSI_SU, 251 INPUT_CSI_TBC, 252 INPUT_CSI_VPA, 253 INPUT_CSI_WINOPS, 254 }; 255 256 /* Control (CSI) command table. */ 257 static const struct input_table_entry input_csi_table[] = { 258 { '@', "", INPUT_CSI_ICH }, 259 { 'A', "", INPUT_CSI_CUU }, 260 { 'B', "", INPUT_CSI_CUD }, 261 { 'C', "", INPUT_CSI_CUF }, 262 { 'D', "", INPUT_CSI_CUB }, 263 { 'E', "", INPUT_CSI_CNL }, 264 { 'F', "", INPUT_CSI_CPL }, 265 { 'G', "", INPUT_CSI_HPA }, 266 { 'H', "", INPUT_CSI_CUP }, 267 { 'J', "", INPUT_CSI_ED }, 268 { 'K', "", INPUT_CSI_EL }, 269 { 'L', "", INPUT_CSI_IL }, 270 { 'M', "", INPUT_CSI_DL }, 271 { 'P', "", INPUT_CSI_DCH }, 272 { 'S', "", INPUT_CSI_SU }, 273 { 'X', "", INPUT_CSI_ECH }, 274 { 'Z', "", INPUT_CSI_CBT }, 275 { '`', "", INPUT_CSI_HPA }, 276 { 'b', "", INPUT_CSI_REP }, 277 { 'c', "", INPUT_CSI_DA }, 278 { 'c', ">", INPUT_CSI_DA_TWO }, 279 { 'd', "", INPUT_CSI_VPA }, 280 { 'f', "", INPUT_CSI_CUP }, 281 { 'g', "", INPUT_CSI_TBC }, 282 { 'h', "", INPUT_CSI_SM }, 283 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 284 { 'l', "", INPUT_CSI_RM }, 285 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 286 { 'm', "", INPUT_CSI_SGR }, 287 { 'n', "", INPUT_CSI_DSR }, 288 { 'q', " ", INPUT_CSI_DECSCUSR }, 289 { 'r', "", INPUT_CSI_DECSTBM }, 290 { 's', "", INPUT_CSI_SCP }, 291 { 't', "", INPUT_CSI_WINOPS }, 292 { 'u', "", INPUT_CSI_RCP }, 293 }; 294 295 /* Input transition. */ 296 struct input_transition { 297 int first; 298 int last; 299 300 int (*handler)(struct input_ctx *); 301 const struct input_state *state; 302 }; 303 304 /* Input state. */ 305 struct input_state { 306 const char *name; 307 void (*enter)(struct input_ctx *); 308 void (*exit)(struct input_ctx *); 309 const struct input_transition *transitions; 310 }; 311 312 /* State transitions available from all states. */ 313 #define INPUT_STATE_ANYWHERE \ 314 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 315 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 316 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 317 318 /* Forward declarations of state tables. */ 319 static const struct input_transition input_state_ground_table[]; 320 static const struct input_transition input_state_esc_enter_table[]; 321 static const struct input_transition input_state_esc_intermediate_table[]; 322 static const struct input_transition input_state_csi_enter_table[]; 323 static const struct input_transition input_state_csi_parameter_table[]; 324 static const struct input_transition input_state_csi_intermediate_table[]; 325 static const struct input_transition input_state_csi_ignore_table[]; 326 static const struct input_transition input_state_dcs_enter_table[]; 327 static const struct input_transition input_state_dcs_parameter_table[]; 328 static const struct input_transition input_state_dcs_intermediate_table[]; 329 static const struct input_transition input_state_dcs_handler_table[]; 330 static const struct input_transition input_state_dcs_escape_table[]; 331 static const struct input_transition input_state_dcs_ignore_table[]; 332 static const struct input_transition input_state_osc_string_table[]; 333 static const struct input_transition input_state_apc_string_table[]; 334 static const struct input_transition input_state_rename_string_table[]; 335 static const struct input_transition input_state_consume_st_table[]; 336 337 /* ground state definition. */ 338 static const struct input_state input_state_ground = { 339 "ground", 340 input_ground, NULL, 341 input_state_ground_table 342 }; 343 344 /* esc_enter state definition. */ 345 static const struct input_state input_state_esc_enter = { 346 "esc_enter", 347 input_clear, NULL, 348 input_state_esc_enter_table 349 }; 350 351 /* esc_intermediate state definition. */ 352 static const struct input_state input_state_esc_intermediate = { 353 "esc_intermediate", 354 NULL, NULL, 355 input_state_esc_intermediate_table 356 }; 357 358 /* csi_enter state definition. */ 359 static const struct input_state input_state_csi_enter = { 360 "csi_enter", 361 input_clear, NULL, 362 input_state_csi_enter_table 363 }; 364 365 /* csi_parameter state definition. */ 366 static const struct input_state input_state_csi_parameter = { 367 "csi_parameter", 368 NULL, NULL, 369 input_state_csi_parameter_table 370 }; 371 372 /* csi_intermediate state definition. */ 373 static const struct input_state input_state_csi_intermediate = { 374 "csi_intermediate", 375 NULL, NULL, 376 input_state_csi_intermediate_table 377 }; 378 379 /* csi_ignore state definition. */ 380 static const struct input_state input_state_csi_ignore = { 381 "csi_ignore", 382 NULL, NULL, 383 input_state_csi_ignore_table 384 }; 385 386 /* dcs_enter state definition. */ 387 static const struct input_state input_state_dcs_enter = { 388 "dcs_enter", 389 input_enter_dcs, NULL, 390 input_state_dcs_enter_table 391 }; 392 393 /* dcs_parameter state definition. */ 394 static const struct input_state input_state_dcs_parameter = { 395 "dcs_parameter", 396 NULL, NULL, 397 input_state_dcs_parameter_table 398 }; 399 400 /* dcs_intermediate state definition. */ 401 static const struct input_state input_state_dcs_intermediate = { 402 "dcs_intermediate", 403 NULL, NULL, 404 input_state_dcs_intermediate_table 405 }; 406 407 /* dcs_handler state definition. */ 408 static const struct input_state input_state_dcs_handler = { 409 "dcs_handler", 410 NULL, NULL, 411 input_state_dcs_handler_table 412 }; 413 414 /* dcs_escape state definition. */ 415 static const struct input_state input_state_dcs_escape = { 416 "dcs_escape", 417 NULL, NULL, 418 input_state_dcs_escape_table 419 }; 420 421 /* dcs_ignore state definition. */ 422 static const struct input_state input_state_dcs_ignore = { 423 "dcs_ignore", 424 NULL, NULL, 425 input_state_dcs_ignore_table 426 }; 427 428 /* osc_string state definition. */ 429 static const struct input_state input_state_osc_string = { 430 "osc_string", 431 input_enter_osc, input_exit_osc, 432 input_state_osc_string_table 433 }; 434 435 /* apc_string state definition. */ 436 static const struct input_state input_state_apc_string = { 437 "apc_string", 438 input_enter_apc, input_exit_apc, 439 input_state_apc_string_table 440 }; 441 442 /* rename_string state definition. */ 443 static const struct input_state input_state_rename_string = { 444 "rename_string", 445 input_enter_rename, input_exit_rename, 446 input_state_rename_string_table 447 }; 448 449 /* consume_st state definition. */ 450 static const struct input_state input_state_consume_st = { 451 "consume_st", 452 input_enter_rename, NULL, /* rename also waits for ST */ 453 input_state_consume_st_table 454 }; 455 456 /* ground state table. */ 457 static const struct input_transition input_state_ground_table[] = { 458 INPUT_STATE_ANYWHERE, 459 460 { 0x00, 0x17, input_c0_dispatch, NULL }, 461 { 0x19, 0x19, input_c0_dispatch, NULL }, 462 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 463 { 0x20, 0x7e, input_print, NULL }, 464 { 0x7f, 0x7f, NULL, NULL }, 465 { 0x80, 0xff, input_top_bit_set, NULL }, 466 467 { -1, -1, NULL, NULL } 468 }; 469 470 /* esc_enter state table. */ 471 static const struct input_transition input_state_esc_enter_table[] = { 472 INPUT_STATE_ANYWHERE, 473 474 { 0x00, 0x17, input_c0_dispatch, NULL }, 475 { 0x19, 0x19, input_c0_dispatch, NULL }, 476 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 477 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 478 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 479 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 480 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 481 { 0x58, 0x58, NULL, &input_state_consume_st }, 482 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 483 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 484 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 485 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 486 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 487 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 488 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 489 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 490 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 491 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 492 { 0x7f, 0xff, NULL, NULL }, 493 494 { -1, -1, NULL, NULL } 495 }; 496 497 /* esc_intermediate state table. */ 498 static const struct input_transition input_state_esc_intermediate_table[] = { 499 INPUT_STATE_ANYWHERE, 500 501 { 0x00, 0x17, input_c0_dispatch, NULL }, 502 { 0x19, 0x19, input_c0_dispatch, NULL }, 503 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 504 { 0x20, 0x2f, input_intermediate, NULL }, 505 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 506 { 0x7f, 0xff, NULL, NULL }, 507 508 { -1, -1, NULL, NULL } 509 }; 510 511 /* csi_enter state table. */ 512 static const struct input_transition input_state_csi_enter_table[] = { 513 INPUT_STATE_ANYWHERE, 514 515 { 0x00, 0x17, input_c0_dispatch, NULL }, 516 { 0x19, 0x19, input_c0_dispatch, NULL }, 517 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 518 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 519 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 520 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 521 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 522 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 523 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 524 { 0x7f, 0xff, NULL, NULL }, 525 526 { -1, -1, NULL, NULL } 527 }; 528 529 /* csi_parameter state table. */ 530 static const struct input_transition input_state_csi_parameter_table[] = { 531 INPUT_STATE_ANYWHERE, 532 533 { 0x00, 0x17, input_c0_dispatch, NULL }, 534 { 0x19, 0x19, input_c0_dispatch, NULL }, 535 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 536 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 537 { 0x30, 0x39, input_parameter, NULL }, 538 { 0x3a, 0x3a, input_parameter, NULL }, 539 { 0x3b, 0x3b, input_parameter, NULL }, 540 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 541 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 542 { 0x7f, 0xff, NULL, NULL }, 543 544 { -1, -1, NULL, NULL } 545 }; 546 547 /* csi_intermediate state table. */ 548 static const struct input_transition input_state_csi_intermediate_table[] = { 549 INPUT_STATE_ANYWHERE, 550 551 { 0x00, 0x17, input_c0_dispatch, NULL }, 552 { 0x19, 0x19, input_c0_dispatch, NULL }, 553 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 554 { 0x20, 0x2f, input_intermediate, NULL }, 555 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 556 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 557 { 0x7f, 0xff, NULL, NULL }, 558 559 { -1, -1, NULL, NULL } 560 }; 561 562 /* csi_ignore state table. */ 563 static const struct input_transition input_state_csi_ignore_table[] = { 564 INPUT_STATE_ANYWHERE, 565 566 { 0x00, 0x17, input_c0_dispatch, NULL }, 567 { 0x19, 0x19, input_c0_dispatch, NULL }, 568 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 569 { 0x20, 0x3f, NULL, NULL }, 570 { 0x40, 0x7e, NULL, &input_state_ground }, 571 { 0x7f, 0xff, NULL, NULL }, 572 573 { -1, -1, NULL, NULL } 574 }; 575 576 /* dcs_enter state table. */ 577 static const struct input_transition input_state_dcs_enter_table[] = { 578 INPUT_STATE_ANYWHERE, 579 580 { 0x00, 0x17, NULL, NULL }, 581 { 0x19, 0x19, NULL, NULL }, 582 { 0x1c, 0x1f, NULL, NULL }, 583 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 584 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 585 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 586 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 587 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 588 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 589 { 0x7f, 0xff, NULL, NULL }, 590 591 { -1, -1, NULL, NULL } 592 }; 593 594 /* dcs_parameter state table. */ 595 static const struct input_transition input_state_dcs_parameter_table[] = { 596 INPUT_STATE_ANYWHERE, 597 598 { 0x00, 0x17, NULL, NULL }, 599 { 0x19, 0x19, NULL, NULL }, 600 { 0x1c, 0x1f, NULL, NULL }, 601 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 602 { 0x30, 0x39, input_parameter, NULL }, 603 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 604 { 0x3b, 0x3b, input_parameter, NULL }, 605 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 606 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 607 { 0x7f, 0xff, NULL, NULL }, 608 609 { -1, -1, NULL, NULL } 610 }; 611 612 /* dcs_intermediate state table. */ 613 static const struct input_transition input_state_dcs_intermediate_table[] = { 614 INPUT_STATE_ANYWHERE, 615 616 { 0x00, 0x17, NULL, NULL }, 617 { 0x19, 0x19, NULL, NULL }, 618 { 0x1c, 0x1f, NULL, NULL }, 619 { 0x20, 0x2f, input_intermediate, NULL }, 620 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 621 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 622 { 0x7f, 0xff, NULL, NULL }, 623 624 { -1, -1, NULL, NULL } 625 }; 626 627 /* dcs_handler state table. */ 628 static const struct input_transition input_state_dcs_handler_table[] = { 629 /* No INPUT_STATE_ANYWHERE */ 630 631 { 0x00, 0x1a, input_input, NULL }, 632 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 633 { 0x1c, 0xff, input_input, NULL }, 634 635 { -1, -1, NULL, NULL } 636 }; 637 638 /* dcs_escape state table. */ 639 static const struct input_transition input_state_dcs_escape_table[] = { 640 /* No INPUT_STATE_ANYWHERE */ 641 642 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 643 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 644 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 645 646 { -1, -1, NULL, NULL } 647 }; 648 649 /* dcs_ignore state table. */ 650 static const struct input_transition input_state_dcs_ignore_table[] = { 651 INPUT_STATE_ANYWHERE, 652 653 { 0x00, 0x17, NULL, NULL }, 654 { 0x19, 0x19, NULL, NULL }, 655 { 0x1c, 0x1f, NULL, NULL }, 656 { 0x20, 0xff, NULL, NULL }, 657 658 { -1, -1, NULL, NULL } 659 }; 660 661 /* osc_string state table. */ 662 static const struct input_transition input_state_osc_string_table[] = { 663 INPUT_STATE_ANYWHERE, 664 665 { 0x00, 0x06, NULL, NULL }, 666 { 0x07, 0x07, input_end_bel, &input_state_ground }, 667 { 0x08, 0x17, NULL, NULL }, 668 { 0x19, 0x19, NULL, NULL }, 669 { 0x1c, 0x1f, NULL, NULL }, 670 { 0x20, 0xff, input_input, NULL }, 671 672 { -1, -1, NULL, NULL } 673 }; 674 675 /* apc_string state table. */ 676 static const struct input_transition input_state_apc_string_table[] = { 677 INPUT_STATE_ANYWHERE, 678 679 { 0x00, 0x17, NULL, NULL }, 680 { 0x19, 0x19, NULL, NULL }, 681 { 0x1c, 0x1f, NULL, NULL }, 682 { 0x20, 0xff, input_input, NULL }, 683 684 { -1, -1, NULL, NULL } 685 }; 686 687 /* rename_string state table. */ 688 static const struct input_transition input_state_rename_string_table[] = { 689 INPUT_STATE_ANYWHERE, 690 691 { 0x00, 0x17, NULL, NULL }, 692 { 0x19, 0x19, NULL, NULL }, 693 { 0x1c, 0x1f, NULL, NULL }, 694 { 0x20, 0xff, input_input, NULL }, 695 696 { -1, -1, NULL, NULL } 697 }; 698 699 /* consume_st state table. */ 700 static const struct input_transition input_state_consume_st_table[] = { 701 INPUT_STATE_ANYWHERE, 702 703 { 0x00, 0x17, NULL, NULL }, 704 { 0x19, 0x19, NULL, NULL }, 705 { 0x1c, 0x1f, NULL, NULL }, 706 { 0x20, 0xff, NULL, NULL }, 707 708 { -1, -1, NULL, NULL } 709 }; 710 711 /* Input table compare. */ 712 static int 713 input_table_compare(const void *key, const void *value) 714 { 715 const struct input_ctx *ictx = key; 716 const struct input_table_entry *entry = value; 717 718 if (ictx->ch != entry->ch) 719 return (ictx->ch - entry->ch); 720 return (strcmp(ictx->interm_buf, entry->interm)); 721 } 722 723 /* 724 * Timer - if this expires then have been waiting for a terminator for too 725 * long, so reset to ground. 726 */ 727 static void 728 input_timer_callback(__unused int fd, __unused short events, void *arg) 729 { 730 struct input_ctx *ictx = arg; 731 struct window_pane *wp = ictx->wp; 732 733 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 734 input_reset(wp, 0); 735 } 736 737 /* Start the timer. */ 738 static void 739 input_start_timer(struct input_ctx *ictx) 740 { 741 struct timeval tv = { .tv_usec = 100000 }; 742 743 event_del(&ictx->timer); 744 event_add(&ictx->timer, &tv); 745 } 746 747 /* Reset cell state to default. */ 748 static void 749 input_reset_cell(struct input_ctx *ictx) 750 { 751 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 752 ictx->cell.set = 0; 753 ictx->cell.g0set = ictx->cell.g1set = 0; 754 755 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 756 ictx->old_cx = 0; 757 ictx->old_cy = 0; 758 } 759 760 /* Save screen state. */ 761 static void 762 input_save_state(struct input_ctx *ictx) 763 { 764 struct screen_write_ctx *sctx = &ictx->ctx; 765 struct screen *s = sctx->s; 766 767 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 768 ictx->old_cx = s->cx; 769 ictx->old_cy = s->cy; 770 ictx->old_mode = s->mode; 771 } 772 773 static void 774 input_restore_state(struct input_ctx *ictx) 775 { 776 struct screen_write_ctx *sctx = &ictx->ctx; 777 778 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 779 if (ictx->old_mode & MODE_ORIGIN) 780 screen_write_mode_set(sctx, MODE_ORIGIN); 781 else 782 screen_write_mode_clear(sctx, MODE_ORIGIN); 783 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 784 } 785 786 /* Initialise input parser. */ 787 void 788 input_init(struct window_pane *wp) 789 { 790 struct input_ctx *ictx; 791 792 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 793 794 ictx->input_space = INPUT_BUF_START; 795 ictx->input_buf = xmalloc(INPUT_BUF_START); 796 797 ictx->since_ground = evbuffer_new(); 798 if (ictx->since_ground == NULL) 799 fatalx("out of memory"); 800 801 evtimer_set(&ictx->timer, input_timer_callback, ictx); 802 803 input_reset(wp, 0); 804 } 805 806 /* Destroy input parser. */ 807 void 808 input_free(struct window_pane *wp) 809 { 810 struct input_ctx *ictx = wp->ictx; 811 u_int i; 812 813 for (i = 0; i < ictx->param_list_len; i++) { 814 if (ictx->param_list[i].type == INPUT_STRING) 815 free(ictx->param_list[i].str); 816 } 817 818 event_del(&ictx->timer); 819 820 free(ictx->input_buf); 821 evbuffer_free(ictx->since_ground); 822 823 free(ictx); 824 wp->ictx = NULL; 825 } 826 827 /* Reset input state and clear screen. */ 828 void 829 input_reset(struct window_pane *wp, int clear) 830 { 831 struct input_ctx *ictx = wp->ictx; 832 struct screen_write_ctx *sctx = &ictx->ctx; 833 834 input_reset_cell(ictx); 835 836 if (clear) { 837 if (TAILQ_EMPTY(&wp->modes)) 838 screen_write_start(sctx, wp, &wp->base); 839 else 840 screen_write_start(sctx, NULL, &wp->base); 841 screen_write_reset(sctx); 842 screen_write_stop(sctx); 843 } 844 845 input_clear(ictx); 846 847 ictx->last = -1; 848 849 ictx->state = &input_state_ground; 850 ictx->flags = 0; 851 } 852 853 /* Return pending data. */ 854 struct evbuffer * 855 input_pending(struct window_pane *wp) 856 { 857 return (wp->ictx->since_ground); 858 } 859 860 /* Change input state. */ 861 static void 862 input_set_state(struct window_pane *wp, const struct input_transition *itr) 863 { 864 struct input_ctx *ictx = wp->ictx; 865 866 if (ictx->state->exit != NULL) 867 ictx->state->exit(ictx); 868 ictx->state = itr->state; 869 if (ictx->state->enter != NULL) 870 ictx->state->enter(ictx); 871 } 872 873 /* Parse input. */ 874 void 875 input_parse(struct window_pane *wp) 876 { 877 struct input_ctx *ictx = wp->ictx; 878 struct screen_write_ctx *sctx = &ictx->ctx; 879 const struct input_transition *itr; 880 struct evbuffer *evb = wp->event->input; 881 u_char *buf; 882 size_t len, off; 883 884 if (EVBUFFER_LENGTH(evb) == 0) 885 return; 886 887 window_update_activity(wp->window); 888 wp->flags |= PANE_CHANGED; 889 890 /* 891 * Open the screen. Use NULL wp if there is a mode set as don't want to 892 * update the tty. 893 */ 894 if (TAILQ_EMPTY(&wp->modes)) 895 screen_write_start(sctx, wp, &wp->base); 896 else 897 screen_write_start(sctx, NULL, &wp->base); 898 ictx->wp = wp; 899 900 buf = EVBUFFER_DATA(evb); 901 len = EVBUFFER_LENGTH(evb); 902 off = 0; 903 904 notify_input(wp, evb); 905 906 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 907 ictx->state->name, len, (int)len, buf); 908 909 /* Parse the input. */ 910 while (off < len) { 911 ictx->ch = buf[off++]; 912 913 /* Find the transition. */ 914 itr = ictx->state->transitions; 915 while (itr->first != -1 && itr->last != -1) { 916 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 917 break; 918 itr++; 919 } 920 if (itr->first == -1 || itr->last == -1) { 921 /* No transition? Eh? */ 922 fatalx("no transition from state"); 923 } 924 925 /* 926 * Any state except print stops the current collection. This is 927 * an optimization to avoid checking if the attributes have 928 * changed for every character. It will stop unnecessarily for 929 * sequences that don't make a terminal change, but they should 930 * be the minority. 931 */ 932 if (itr->handler != input_print) 933 screen_write_collect_end(sctx); 934 935 /* 936 * Execute the handler, if any. Don't switch state if it 937 * returns non-zero. 938 */ 939 if (itr->handler != NULL && itr->handler(ictx) != 0) 940 continue; 941 942 /* And switch state, if necessary. */ 943 if (itr->state != NULL) 944 input_set_state(wp, itr); 945 946 /* If not in ground state, save input. */ 947 if (ictx->state != &input_state_ground) 948 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 949 } 950 951 /* Close the screen. */ 952 screen_write_stop(sctx); 953 954 evbuffer_drain(evb, len); 955 } 956 957 /* Split the parameter list (if any). */ 958 static int 959 input_split(struct input_ctx *ictx) 960 { 961 const char *errstr; 962 char *ptr, *out; 963 struct input_param *ip; 964 u_int i; 965 966 for (i = 0; i < ictx->param_list_len; i++) { 967 if (ictx->param_list[i].type == INPUT_STRING) 968 free(ictx->param_list[i].str); 969 } 970 ictx->param_list_len = 0; 971 972 if (ictx->param_len == 0) 973 return (0); 974 ip = &ictx->param_list[0]; 975 976 ptr = ictx->param_buf; 977 while ((out = strsep(&ptr, ";")) != NULL) { 978 if (*out == '\0') 979 ip->type = INPUT_MISSING; 980 else { 981 if (strchr(out, ':') != NULL) { 982 ip->type = INPUT_STRING; 983 ip->str = xstrdup(out); 984 } else { 985 ip->type = INPUT_NUMBER; 986 ip->num = strtonum(out, 0, INT_MAX, &errstr); 987 if (errstr != NULL) 988 return (-1); 989 } 990 } 991 ip = &ictx->param_list[++ictx->param_list_len]; 992 if (ictx->param_list_len == nitems(ictx->param_list)) 993 return (-1); 994 } 995 996 for (i = 0; i < ictx->param_list_len; i++) { 997 ip = &ictx->param_list[i]; 998 if (ip->type == INPUT_MISSING) 999 log_debug("parameter %u: missing", i); 1000 else if (ip->type == INPUT_STRING) 1001 log_debug("parameter %u: string %s", i, ip->str); 1002 else if (ip->type == INPUT_NUMBER) 1003 log_debug("parameter %u: number %d", i, ip->num); 1004 } 1005 1006 return (0); 1007 } 1008 1009 /* Get an argument or return default value. */ 1010 static int 1011 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1012 { 1013 struct input_param *ip; 1014 int retval; 1015 1016 if (validx >= ictx->param_list_len) 1017 return (defval); 1018 ip = &ictx->param_list[validx]; 1019 if (ip->type == INPUT_MISSING) 1020 return (defval); 1021 if (ip->type == INPUT_STRING) 1022 return (-1); 1023 retval = ip->num; 1024 if (retval < minval) 1025 return (minval); 1026 return (retval); 1027 } 1028 1029 /* Reply to terminal query. */ 1030 static void 1031 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1032 { 1033 va_list ap; 1034 char *reply; 1035 1036 va_start(ap, fmt); 1037 xvasprintf(&reply, fmt, ap); 1038 va_end(ap); 1039 1040 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 1041 free(reply); 1042 } 1043 1044 /* Clear saved state. */ 1045 static void 1046 input_clear(struct input_ctx *ictx) 1047 { 1048 event_del(&ictx->timer); 1049 1050 *ictx->interm_buf = '\0'; 1051 ictx->interm_len = 0; 1052 1053 *ictx->param_buf = '\0'; 1054 ictx->param_len = 0; 1055 1056 *ictx->input_buf = '\0'; 1057 ictx->input_len = 0; 1058 1059 ictx->input_end = INPUT_END_ST; 1060 1061 ictx->flags &= ~INPUT_DISCARD; 1062 } 1063 1064 /* Reset for ground state. */ 1065 static void 1066 input_ground(struct input_ctx *ictx) 1067 { 1068 event_del(&ictx->timer); 1069 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1070 1071 if (ictx->input_space > INPUT_BUF_START) { 1072 ictx->input_space = INPUT_BUF_START; 1073 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1074 } 1075 } 1076 1077 /* Output this character to the screen. */ 1078 static int 1079 input_print(struct input_ctx *ictx) 1080 { 1081 struct screen_write_ctx *sctx = &ictx->ctx; 1082 int set; 1083 1084 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1085 1086 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1087 if (set == 1) 1088 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1089 else 1090 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1091 1092 utf8_set(&ictx->cell.cell.data, ictx->ch); 1093 screen_write_collect_add(sctx, &ictx->cell.cell); 1094 ictx->last = ictx->ch; 1095 1096 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1097 1098 return (0); 1099 } 1100 1101 /* Collect intermediate string. */ 1102 static int 1103 input_intermediate(struct input_ctx *ictx) 1104 { 1105 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1106 ictx->flags |= INPUT_DISCARD; 1107 else { 1108 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1109 ictx->interm_buf[ictx->interm_len] = '\0'; 1110 } 1111 1112 return (0); 1113 } 1114 1115 /* Collect parameter string. */ 1116 static int 1117 input_parameter(struct input_ctx *ictx) 1118 { 1119 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1120 ictx->flags |= INPUT_DISCARD; 1121 else { 1122 ictx->param_buf[ictx->param_len++] = ictx->ch; 1123 ictx->param_buf[ictx->param_len] = '\0'; 1124 } 1125 1126 return (0); 1127 } 1128 1129 /* Collect input string. */ 1130 static int 1131 input_input(struct input_ctx *ictx) 1132 { 1133 size_t available; 1134 1135 available = ictx->input_space; 1136 while (ictx->input_len + 1 >= available) { 1137 available *= 2; 1138 if (available > INPUT_BUF_LIMIT) { 1139 ictx->flags |= INPUT_DISCARD; 1140 return (0); 1141 } 1142 ictx->input_buf = xrealloc(ictx->input_buf, available); 1143 ictx->input_space = available; 1144 } 1145 ictx->input_buf[ictx->input_len++] = ictx->ch; 1146 ictx->input_buf[ictx->input_len] = '\0'; 1147 1148 return (0); 1149 } 1150 1151 /* Execute C0 control sequence. */ 1152 static int 1153 input_c0_dispatch(struct input_ctx *ictx) 1154 { 1155 struct screen_write_ctx *sctx = &ictx->ctx; 1156 struct window_pane *wp = ictx->wp; 1157 struct screen *s = sctx->s; 1158 1159 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1160 1161 log_debug("%s: '%c'", __func__, ictx->ch); 1162 1163 switch (ictx->ch) { 1164 case '\000': /* NUL */ 1165 break; 1166 case '\007': /* BEL */ 1167 alerts_queue(wp->window, WINDOW_BELL); 1168 break; 1169 case '\010': /* BS */ 1170 screen_write_backspace(sctx); 1171 break; 1172 case '\011': /* HT */ 1173 /* Don't tab beyond the end of the line. */ 1174 if (s->cx >= screen_size_x(s) - 1) 1175 break; 1176 1177 /* Find the next tab point, or use the last column if none. */ 1178 do { 1179 s->cx++; 1180 if (bit_test(s->tabs, s->cx)) 1181 break; 1182 } while (s->cx < screen_size_x(s) - 1); 1183 break; 1184 case '\012': /* LF */ 1185 case '\013': /* VT */ 1186 case '\014': /* FF */ 1187 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1188 if (s->mode & MODE_CRLF) 1189 screen_write_carriagereturn(sctx); 1190 break; 1191 case '\015': /* CR */ 1192 screen_write_carriagereturn(sctx); 1193 break; 1194 case '\016': /* SO */ 1195 ictx->cell.set = 1; 1196 break; 1197 case '\017': /* SI */ 1198 ictx->cell.set = 0; 1199 break; 1200 default: 1201 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1202 break; 1203 } 1204 1205 ictx->last = -1; 1206 return (0); 1207 } 1208 1209 /* Execute escape sequence. */ 1210 static int 1211 input_esc_dispatch(struct input_ctx *ictx) 1212 { 1213 struct screen_write_ctx *sctx = &ictx->ctx; 1214 struct screen *s = sctx->s; 1215 struct input_table_entry *entry; 1216 1217 if (ictx->flags & INPUT_DISCARD) 1218 return (0); 1219 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1220 1221 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1222 sizeof input_esc_table[0], input_table_compare); 1223 if (entry == NULL) { 1224 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1225 return (0); 1226 } 1227 1228 switch (entry->type) { 1229 case INPUT_ESC_RIS: 1230 window_pane_reset_palette(ictx->wp); 1231 input_reset_cell(ictx); 1232 screen_write_reset(sctx); 1233 break; 1234 case INPUT_ESC_IND: 1235 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1236 break; 1237 case INPUT_ESC_NEL: 1238 screen_write_carriagereturn(sctx); 1239 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1240 break; 1241 case INPUT_ESC_HTS: 1242 if (s->cx < screen_size_x(s)) 1243 bit_set(s->tabs, s->cx); 1244 break; 1245 case INPUT_ESC_RI: 1246 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1247 break; 1248 case INPUT_ESC_DECKPAM: 1249 screen_write_mode_set(sctx, MODE_KKEYPAD); 1250 break; 1251 case INPUT_ESC_DECKPNM: 1252 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1253 break; 1254 case INPUT_ESC_DECSC: 1255 input_save_state(ictx); 1256 break; 1257 case INPUT_ESC_DECRC: 1258 input_restore_state(ictx); 1259 break; 1260 case INPUT_ESC_DECALN: 1261 screen_write_alignmenttest(sctx); 1262 break; 1263 case INPUT_ESC_SCSG0_ON: 1264 ictx->cell.g0set = 1; 1265 break; 1266 case INPUT_ESC_SCSG0_OFF: 1267 ictx->cell.g0set = 0; 1268 break; 1269 case INPUT_ESC_SCSG1_ON: 1270 ictx->cell.g1set = 1; 1271 break; 1272 case INPUT_ESC_SCSG1_OFF: 1273 ictx->cell.g1set = 0; 1274 break; 1275 case INPUT_ESC_ST: 1276 /* ST terminates OSC but the state transition already did it. */ 1277 break; 1278 } 1279 1280 ictx->last = -1; 1281 return (0); 1282 } 1283 1284 /* Execute control sequence. */ 1285 static int 1286 input_csi_dispatch(struct input_ctx *ictx) 1287 { 1288 struct screen_write_ctx *sctx = &ictx->ctx; 1289 struct screen *s = sctx->s; 1290 struct input_table_entry *entry; 1291 int i, n, m; 1292 u_int cx, bg = ictx->cell.cell.bg; 1293 1294 if (ictx->flags & INPUT_DISCARD) 1295 return (0); 1296 1297 log_debug("%s: '%c' \"%s\" \"%s\"", 1298 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1299 1300 if (input_split(ictx) != 0) 1301 return (0); 1302 1303 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1304 sizeof input_csi_table[0], input_table_compare); 1305 if (entry == NULL) { 1306 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1307 return (0); 1308 } 1309 1310 switch (entry->type) { 1311 case INPUT_CSI_CBT: 1312 /* Find the previous tab point, n times. */ 1313 cx = s->cx; 1314 if (cx > screen_size_x(s) - 1) 1315 cx = screen_size_x(s) - 1; 1316 n = input_get(ictx, 0, 1, 1); 1317 if (n == -1) 1318 break; 1319 while (cx > 0 && n-- > 0) { 1320 do 1321 cx--; 1322 while (cx > 0 && !bit_test(s->tabs, cx)); 1323 } 1324 s->cx = cx; 1325 break; 1326 case INPUT_CSI_CUB: 1327 n = input_get(ictx, 0, 1, 1); 1328 if (n != -1) 1329 screen_write_cursorleft(sctx, n); 1330 break; 1331 case INPUT_CSI_CUD: 1332 n = input_get(ictx, 0, 1, 1); 1333 if (n != -1) 1334 screen_write_cursordown(sctx, n); 1335 break; 1336 case INPUT_CSI_CUF: 1337 n = input_get(ictx, 0, 1, 1); 1338 if (n != -1) 1339 screen_write_cursorright(sctx, n); 1340 break; 1341 case INPUT_CSI_CUP: 1342 n = input_get(ictx, 0, 1, 1); 1343 m = input_get(ictx, 1, 1, 1); 1344 if (n != -1 && m != -1) 1345 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1346 break; 1347 case INPUT_CSI_WINOPS: 1348 input_csi_dispatch_winops(ictx); 1349 break; 1350 case INPUT_CSI_CUU: 1351 n = input_get(ictx, 0, 1, 1); 1352 if (n != -1) 1353 screen_write_cursorup(sctx, n); 1354 break; 1355 case INPUT_CSI_CNL: 1356 n = input_get(ictx, 0, 1, 1); 1357 if (n != -1) { 1358 screen_write_carriagereturn(sctx); 1359 screen_write_cursordown(sctx, n); 1360 } 1361 break; 1362 case INPUT_CSI_CPL: 1363 n = input_get(ictx, 0, 1, 1); 1364 if (n != -1) { 1365 screen_write_carriagereturn(sctx); 1366 screen_write_cursorup(sctx, n); 1367 } 1368 break; 1369 case INPUT_CSI_DA: 1370 switch (input_get(ictx, 0, 0, 0)) { 1371 case -1: 1372 break; 1373 case 0: 1374 input_reply(ictx, "\033[?1;2c"); 1375 break; 1376 default: 1377 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1378 break; 1379 } 1380 break; 1381 case INPUT_CSI_DA_TWO: 1382 switch (input_get(ictx, 0, 0, 0)) { 1383 case -1: 1384 break; 1385 case 0: 1386 input_reply(ictx, "\033[>84;0;0c"); 1387 break; 1388 default: 1389 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1390 break; 1391 } 1392 break; 1393 case INPUT_CSI_ECH: 1394 n = input_get(ictx, 0, 1, 1); 1395 if (n != -1) 1396 screen_write_clearcharacter(sctx, n, bg); 1397 break; 1398 case INPUT_CSI_DCH: 1399 n = input_get(ictx, 0, 1, 1); 1400 if (n != -1) 1401 screen_write_deletecharacter(sctx, n, bg); 1402 break; 1403 case INPUT_CSI_DECSTBM: 1404 n = input_get(ictx, 0, 1, 1); 1405 m = input_get(ictx, 1, 1, screen_size_y(s)); 1406 if (n != -1 && m != -1) 1407 screen_write_scrollregion(sctx, n - 1, m - 1); 1408 break; 1409 case INPUT_CSI_DL: 1410 n = input_get(ictx, 0, 1, 1); 1411 if (n != -1) 1412 screen_write_deleteline(sctx, n, bg); 1413 break; 1414 case INPUT_CSI_DSR: 1415 switch (input_get(ictx, 0, 0, 0)) { 1416 case -1: 1417 break; 1418 case 5: 1419 input_reply(ictx, "\033[0n"); 1420 break; 1421 case 6: 1422 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1423 break; 1424 default: 1425 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1426 break; 1427 } 1428 break; 1429 case INPUT_CSI_ED: 1430 switch (input_get(ictx, 0, 0, 0)) { 1431 case -1: 1432 break; 1433 case 0: 1434 screen_write_clearendofscreen(sctx, bg); 1435 break; 1436 case 1: 1437 screen_write_clearstartofscreen(sctx, bg); 1438 break; 1439 case 2: 1440 screen_write_clearscreen(sctx, bg); 1441 break; 1442 case 3: 1443 if (input_get(ictx, 1, 0, 0) == 0) { 1444 /* 1445 * Linux console extension to clear history 1446 * (for example before locking the screen). 1447 */ 1448 screen_write_clearhistory(sctx); 1449 } 1450 break; 1451 default: 1452 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1453 break; 1454 } 1455 break; 1456 case INPUT_CSI_EL: 1457 switch (input_get(ictx, 0, 0, 0)) { 1458 case -1: 1459 break; 1460 case 0: 1461 screen_write_clearendofline(sctx, bg); 1462 break; 1463 case 1: 1464 screen_write_clearstartofline(sctx, bg); 1465 break; 1466 case 2: 1467 screen_write_clearline(sctx, bg); 1468 break; 1469 default: 1470 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1471 break; 1472 } 1473 break; 1474 case INPUT_CSI_HPA: 1475 n = input_get(ictx, 0, 1, 1); 1476 if (n != -1) 1477 screen_write_cursormove(sctx, n - 1, -1, 1); 1478 break; 1479 case INPUT_CSI_ICH: 1480 n = input_get(ictx, 0, 1, 1); 1481 if (n != -1) 1482 screen_write_insertcharacter(sctx, n, bg); 1483 break; 1484 case INPUT_CSI_IL: 1485 n = input_get(ictx, 0, 1, 1); 1486 if (n != -1) 1487 screen_write_insertline(sctx, n, bg); 1488 break; 1489 case INPUT_CSI_REP: 1490 n = input_get(ictx, 0, 1, 1); 1491 if (n == -1) 1492 break; 1493 1494 if (ictx->last == -1) 1495 break; 1496 ictx->ch = ictx->last; 1497 1498 for (i = 0; i < n; i++) 1499 input_print(ictx); 1500 break; 1501 case INPUT_CSI_RCP: 1502 input_restore_state(ictx); 1503 break; 1504 case INPUT_CSI_RM: 1505 input_csi_dispatch_rm(ictx); 1506 break; 1507 case INPUT_CSI_RM_PRIVATE: 1508 input_csi_dispatch_rm_private(ictx); 1509 break; 1510 case INPUT_CSI_SCP: 1511 input_save_state(ictx); 1512 break; 1513 case INPUT_CSI_SGR: 1514 input_csi_dispatch_sgr(ictx); 1515 break; 1516 case INPUT_CSI_SM: 1517 input_csi_dispatch_sm(ictx); 1518 break; 1519 case INPUT_CSI_SM_PRIVATE: 1520 input_csi_dispatch_sm_private(ictx); 1521 break; 1522 case INPUT_CSI_SU: 1523 n = input_get(ictx, 0, 1, 1); 1524 if (n != -1) 1525 screen_write_scrollup(sctx, n, bg); 1526 break; 1527 case INPUT_CSI_TBC: 1528 switch (input_get(ictx, 0, 0, 0)) { 1529 case -1: 1530 break; 1531 case 0: 1532 if (s->cx < screen_size_x(s)) 1533 bit_clear(s->tabs, s->cx); 1534 break; 1535 case 3: 1536 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1537 break; 1538 default: 1539 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1540 break; 1541 } 1542 break; 1543 case INPUT_CSI_VPA: 1544 n = input_get(ictx, 0, 1, 1); 1545 if (n != -1) 1546 screen_write_cursormove(sctx, -1, n - 1, 1); 1547 break; 1548 case INPUT_CSI_DECSCUSR: 1549 n = input_get(ictx, 0, 0, 0); 1550 if (n != -1) 1551 screen_set_cursor_style(s, n); 1552 break; 1553 } 1554 1555 ictx->last = -1; 1556 return (0); 1557 } 1558 1559 /* Handle CSI RM. */ 1560 static void 1561 input_csi_dispatch_rm(struct input_ctx *ictx) 1562 { 1563 struct screen_write_ctx *sctx = &ictx->ctx; 1564 u_int i; 1565 1566 for (i = 0; i < ictx->param_list_len; i++) { 1567 switch (input_get(ictx, i, 0, -1)) { 1568 case -1: 1569 break; 1570 case 4: /* IRM */ 1571 screen_write_mode_clear(sctx, MODE_INSERT); 1572 break; 1573 case 34: 1574 screen_write_mode_set(sctx, MODE_BLINKING); 1575 break; 1576 default: 1577 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1578 break; 1579 } 1580 } 1581 } 1582 1583 /* Handle CSI private RM. */ 1584 static void 1585 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1586 { 1587 struct screen_write_ctx *sctx = &ictx->ctx; 1588 struct window_pane *wp = ictx->wp; 1589 u_int i; 1590 1591 for (i = 0; i < ictx->param_list_len; i++) { 1592 switch (input_get(ictx, i, 0, -1)) { 1593 case -1: 1594 break; 1595 case 1: /* DECCKM */ 1596 screen_write_mode_clear(sctx, MODE_KCURSOR); 1597 break; 1598 case 3: /* DECCOLM */ 1599 screen_write_cursormove(sctx, 0, 0, 1); 1600 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1601 break; 1602 case 6: /* DECOM */ 1603 screen_write_mode_clear(sctx, MODE_ORIGIN); 1604 screen_write_cursormove(sctx, 0, 0, 1); 1605 break; 1606 case 7: /* DECAWM */ 1607 screen_write_mode_clear(sctx, MODE_WRAP); 1608 break; 1609 case 12: 1610 screen_write_mode_clear(sctx, MODE_BLINKING); 1611 break; 1612 case 25: /* TCEM */ 1613 screen_write_mode_clear(sctx, MODE_CURSOR); 1614 break; 1615 case 1000: 1616 case 1001: 1617 case 1002: 1618 case 1003: 1619 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1620 break; 1621 case 1004: 1622 screen_write_mode_clear(sctx, MODE_FOCUSON); 1623 break; 1624 case 1005: 1625 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1626 break; 1627 case 1006: 1628 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1629 break; 1630 case 47: 1631 case 1047: 1632 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1633 break; 1634 case 1049: 1635 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1636 break; 1637 case 2004: 1638 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1639 break; 1640 default: 1641 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1642 break; 1643 } 1644 } 1645 } 1646 1647 /* Handle CSI SM. */ 1648 static void 1649 input_csi_dispatch_sm(struct input_ctx *ictx) 1650 { 1651 struct screen_write_ctx *sctx = &ictx->ctx; 1652 u_int i; 1653 1654 for (i = 0; i < ictx->param_list_len; i++) { 1655 switch (input_get(ictx, i, 0, -1)) { 1656 case -1: 1657 break; 1658 case 4: /* IRM */ 1659 screen_write_mode_set(sctx, MODE_INSERT); 1660 break; 1661 case 34: 1662 screen_write_mode_clear(sctx, MODE_BLINKING); 1663 break; 1664 default: 1665 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1666 break; 1667 } 1668 } 1669 } 1670 1671 /* Handle CSI private SM. */ 1672 static void 1673 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1674 { 1675 struct screen_write_ctx *sctx = &ictx->ctx; 1676 struct window_pane *wp = ictx->wp; 1677 u_int i; 1678 1679 for (i = 0; i < ictx->param_list_len; i++) { 1680 switch (input_get(ictx, i, 0, -1)) { 1681 case -1: 1682 break; 1683 case 1: /* DECCKM */ 1684 screen_write_mode_set(sctx, MODE_KCURSOR); 1685 break; 1686 case 3: /* DECCOLM */ 1687 screen_write_cursormove(sctx, 0, 0, 1); 1688 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1689 break; 1690 case 6: /* DECOM */ 1691 screen_write_mode_set(sctx, MODE_ORIGIN); 1692 screen_write_cursormove(sctx, 0, 0, 1); 1693 break; 1694 case 7: /* DECAWM */ 1695 screen_write_mode_set(sctx, MODE_WRAP); 1696 break; 1697 case 12: 1698 screen_write_mode_set(sctx, MODE_BLINKING); 1699 break; 1700 case 25: /* TCEM */ 1701 screen_write_mode_set(sctx, MODE_CURSOR); 1702 break; 1703 case 1000: 1704 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1705 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1706 break; 1707 case 1002: 1708 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1709 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1710 break; 1711 case 1003: 1712 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1713 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1714 break; 1715 case 1004: 1716 if (sctx->s->mode & MODE_FOCUSON) 1717 break; 1718 screen_write_mode_set(sctx, MODE_FOCUSON); 1719 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1720 break; 1721 case 1005: 1722 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1723 break; 1724 case 1006: 1725 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1726 break; 1727 case 47: 1728 case 1047: 1729 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1730 break; 1731 case 1049: 1732 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1733 break; 1734 case 2004: 1735 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1736 break; 1737 default: 1738 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1739 break; 1740 } 1741 } 1742 } 1743 1744 /* Handle CSI window operations. */ 1745 static void 1746 input_csi_dispatch_winops(struct input_ctx *ictx) 1747 { 1748 struct screen_write_ctx *sctx = &ictx->ctx; 1749 struct window_pane *wp = ictx->wp; 1750 int n, m; 1751 1752 m = 0; 1753 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1754 switch (n) { 1755 case 1: 1756 case 2: 1757 case 5: 1758 case 6: 1759 case 7: 1760 case 11: 1761 case 13: 1762 case 14: 1763 case 19: 1764 case 20: 1765 case 21: 1766 case 24: 1767 break; 1768 case 3: 1769 case 4: 1770 case 8: 1771 m++; 1772 if (input_get(ictx, m, 0, -1) == -1) 1773 return; 1774 /* FALLTHROUGH */ 1775 case 9: 1776 case 10: 1777 m++; 1778 if (input_get(ictx, m, 0, -1) == -1) 1779 return; 1780 break; 1781 case 22: 1782 m++; 1783 switch (input_get(ictx, m, 0, -1)) { 1784 case -1: 1785 return; 1786 case 0: 1787 case 2: 1788 screen_push_title(sctx->s); 1789 break; 1790 } 1791 break; 1792 case 23: 1793 m++; 1794 switch (input_get(ictx, m, 0, -1)) { 1795 case -1: 1796 return; 1797 case 0: 1798 case 2: 1799 screen_pop_title(sctx->s); 1800 server_status_window(ictx->wp->window); 1801 break; 1802 } 1803 break; 1804 case 18: 1805 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1806 break; 1807 default: 1808 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1809 break; 1810 } 1811 m++; 1812 } 1813 } 1814 1815 /* Helper for 256 colour SGR. */ 1816 static int 1817 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1818 { 1819 struct grid_cell *gc = &ictx->cell.cell; 1820 1821 if (c == -1 || c > 255) { 1822 if (fgbg == 38) 1823 gc->fg = 8; 1824 else if (fgbg == 48) 1825 gc->bg = 8; 1826 } else { 1827 if (fgbg == 38) 1828 gc->fg = c | COLOUR_FLAG_256; 1829 else if (fgbg == 48) 1830 gc->bg = c | COLOUR_FLAG_256; 1831 } 1832 return (1); 1833 } 1834 1835 /* Handle CSI SGR for 256 colours. */ 1836 static void 1837 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1838 { 1839 int c; 1840 1841 c = input_get(ictx, (*i) + 1, 0, -1); 1842 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1843 (*i)++; 1844 } 1845 1846 /* Helper for RGB colour SGR. */ 1847 static int 1848 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1849 int b) 1850 { 1851 struct grid_cell *gc = &ictx->cell.cell; 1852 1853 if (r == -1 || r > 255) 1854 return (0); 1855 if (g == -1 || g > 255) 1856 return (0); 1857 if (b == -1 || b > 255) 1858 return (0); 1859 1860 if (fgbg == 38) 1861 gc->fg = colour_join_rgb(r, g, b); 1862 else if (fgbg == 48) 1863 gc->bg = colour_join_rgb(r, g, b); 1864 return (1); 1865 } 1866 1867 /* Handle CSI SGR for RGB colours. */ 1868 static void 1869 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1870 { 1871 int r, g, b; 1872 1873 r = input_get(ictx, (*i) + 1, 0, -1); 1874 g = input_get(ictx, (*i) + 2, 0, -1); 1875 b = input_get(ictx, (*i) + 3, 0, -1); 1876 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1877 (*i) += 3; 1878 } 1879 1880 /* Handle CSI SGR with a ISO parameter. */ 1881 static void 1882 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1883 { 1884 struct grid_cell *gc = &ictx->cell.cell; 1885 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1886 int p[8]; 1887 u_int n; 1888 const char *errstr; 1889 1890 for (n = 0; n < nitems(p); n++) 1891 p[n] = -1; 1892 n = 0; 1893 1894 ptr = copy = xstrdup(s); 1895 while ((out = strsep(&ptr, ":")) != NULL) { 1896 if (*out != '\0') { 1897 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1898 if (errstr != NULL || n == nitems(p)) { 1899 free(copy); 1900 return; 1901 } 1902 } else 1903 n++; 1904 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1905 } 1906 free(copy); 1907 1908 if (n == 0) 1909 return; 1910 if (p[0] == 4) { 1911 if (n != 2) 1912 return; 1913 switch (p[1]) { 1914 case 0: 1915 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1916 break; 1917 case 1: 1918 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1919 gc->attr |= GRID_ATTR_UNDERSCORE; 1920 break; 1921 case 2: 1922 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1923 gc->attr |= GRID_ATTR_UNDERSCORE_2; 1924 break; 1925 case 3: 1926 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1927 gc->attr |= GRID_ATTR_UNDERSCORE_3; 1928 break; 1929 case 4: 1930 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1931 gc->attr |= GRID_ATTR_UNDERSCORE_4; 1932 break; 1933 case 5: 1934 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1935 gc->attr |= GRID_ATTR_UNDERSCORE_5; 1936 break; 1937 } 1938 return; 1939 } 1940 if (p[0] != 38 && p[0] != 48) 1941 return; 1942 if (p[1] == -1) 1943 i = 2; 1944 else 1945 i = 1; 1946 switch (p[i]) { 1947 case 2: 1948 if (n < i + 4) 1949 break; 1950 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i + 1], p[i + 2], 1951 p[i + 3]); 1952 break; 1953 case 5: 1954 if (n < i + 2) 1955 break; 1956 input_csi_dispatch_sgr_256_do(ictx, p[0], p[i + 1]); 1957 break; 1958 } 1959 } 1960 1961 /* Handle CSI SGR. */ 1962 static void 1963 input_csi_dispatch_sgr(struct input_ctx *ictx) 1964 { 1965 struct grid_cell *gc = &ictx->cell.cell; 1966 u_int i; 1967 int n; 1968 1969 if (ictx->param_list_len == 0) { 1970 memcpy(gc, &grid_default_cell, sizeof *gc); 1971 return; 1972 } 1973 1974 for (i = 0; i < ictx->param_list_len; i++) { 1975 if (ictx->param_list[i].type == INPUT_STRING) { 1976 input_csi_dispatch_sgr_colon(ictx, i); 1977 continue; 1978 } 1979 n = input_get(ictx, i, 0, 0); 1980 if (n == -1) 1981 continue; 1982 1983 if (n == 38 || n == 48) { 1984 i++; 1985 switch (input_get(ictx, i, 0, -1)) { 1986 case 2: 1987 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1988 break; 1989 case 5: 1990 input_csi_dispatch_sgr_256(ictx, n, &i); 1991 break; 1992 } 1993 continue; 1994 } 1995 1996 switch (n) { 1997 case 0: 1998 memcpy(gc, &grid_default_cell, sizeof *gc); 1999 break; 2000 case 1: 2001 gc->attr |= GRID_ATTR_BRIGHT; 2002 break; 2003 case 2: 2004 gc->attr |= GRID_ATTR_DIM; 2005 break; 2006 case 3: 2007 gc->attr |= GRID_ATTR_ITALICS; 2008 break; 2009 case 4: 2010 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2011 gc->attr |= GRID_ATTR_UNDERSCORE; 2012 break; 2013 case 5: 2014 gc->attr |= GRID_ATTR_BLINK; 2015 break; 2016 case 7: 2017 gc->attr |= GRID_ATTR_REVERSE; 2018 break; 2019 case 8: 2020 gc->attr |= GRID_ATTR_HIDDEN; 2021 break; 2022 case 9: 2023 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2024 break; 2025 case 22: 2026 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2027 break; 2028 case 23: 2029 gc->attr &= ~GRID_ATTR_ITALICS; 2030 break; 2031 case 24: 2032 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2033 break; 2034 case 25: 2035 gc->attr &= ~GRID_ATTR_BLINK; 2036 break; 2037 case 27: 2038 gc->attr &= ~GRID_ATTR_REVERSE; 2039 break; 2040 case 28: 2041 gc->attr &= ~GRID_ATTR_HIDDEN; 2042 break; 2043 case 29: 2044 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2045 break; 2046 case 30: 2047 case 31: 2048 case 32: 2049 case 33: 2050 case 34: 2051 case 35: 2052 case 36: 2053 case 37: 2054 gc->fg = n - 30; 2055 break; 2056 case 39: 2057 gc->fg = 8; 2058 break; 2059 case 40: 2060 case 41: 2061 case 42: 2062 case 43: 2063 case 44: 2064 case 45: 2065 case 46: 2066 case 47: 2067 gc->bg = n - 40; 2068 break; 2069 case 49: 2070 gc->bg = 8; 2071 break; 2072 case 90: 2073 case 91: 2074 case 92: 2075 case 93: 2076 case 94: 2077 case 95: 2078 case 96: 2079 case 97: 2080 gc->fg = n; 2081 break; 2082 case 100: 2083 case 101: 2084 case 102: 2085 case 103: 2086 case 104: 2087 case 105: 2088 case 106: 2089 case 107: 2090 gc->bg = n - 10; 2091 break; 2092 } 2093 } 2094 } 2095 2096 /* End of input with BEL. */ 2097 static int 2098 input_end_bel(struct input_ctx *ictx) 2099 { 2100 log_debug("%s", __func__); 2101 2102 ictx->input_end = INPUT_END_BEL; 2103 2104 return (0); 2105 } 2106 2107 /* DCS string started. */ 2108 static void 2109 input_enter_dcs(struct input_ctx *ictx) 2110 { 2111 log_debug("%s", __func__); 2112 2113 input_clear(ictx); 2114 input_start_timer(ictx); 2115 ictx->last = -1; 2116 } 2117 2118 /* DCS terminator (ST) received. */ 2119 static int 2120 input_dcs_dispatch(struct input_ctx *ictx) 2121 { 2122 struct screen_write_ctx *sctx = &ictx->ctx; 2123 u_char *buf = ictx->input_buf; 2124 size_t len = ictx->input_len; 2125 const char prefix[] = "tmux;"; 2126 const u_int prefixlen = (sizeof prefix) - 1; 2127 2128 if (ictx->flags & INPUT_DISCARD) 2129 return (0); 2130 2131 log_debug("%s: \"%s\"", __func__, buf); 2132 2133 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2134 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2135 2136 return (0); 2137 } 2138 2139 /* OSC string started. */ 2140 static void 2141 input_enter_osc(struct input_ctx *ictx) 2142 { 2143 log_debug("%s", __func__); 2144 2145 input_clear(ictx); 2146 input_start_timer(ictx); 2147 ictx->last = -1; 2148 } 2149 2150 /* OSC terminator (ST) received. */ 2151 static void 2152 input_exit_osc(struct input_ctx *ictx) 2153 { 2154 struct screen_write_ctx *sctx = &ictx->ctx; 2155 u_char *p = ictx->input_buf; 2156 u_int option; 2157 2158 if (ictx->flags & INPUT_DISCARD) 2159 return; 2160 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2161 return; 2162 2163 log_debug("%s: \"%s\" (end %s)", __func__, p, 2164 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2165 2166 option = 0; 2167 while (*p >= '0' && *p <= '9') 2168 option = option * 10 + *p++ - '0'; 2169 if (*p == ';') 2170 p++; 2171 2172 switch (option) { 2173 case 0: 2174 case 2: 2175 if (utf8_isvalid(p)) { 2176 screen_set_title(sctx->s, p); 2177 server_status_window(ictx->wp->window); 2178 } 2179 break; 2180 case 4: 2181 input_osc_4(ictx, p); 2182 break; 2183 case 10: 2184 input_osc_10(ictx, p); 2185 break; 2186 case 11: 2187 input_osc_11(ictx, p); 2188 break; 2189 case 12: 2190 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2191 screen_set_cursor_colour(sctx->s, p); 2192 break; 2193 case 52: 2194 input_osc_52(ictx, p); 2195 break; 2196 case 104: 2197 input_osc_104(ictx, p); 2198 break; 2199 case 112: 2200 if (*p == '\0') /* no arguments allowed */ 2201 screen_set_cursor_colour(sctx->s, ""); 2202 break; 2203 default: 2204 log_debug("%s: unknown '%u'", __func__, option); 2205 break; 2206 } 2207 } 2208 2209 /* APC string started. */ 2210 static void 2211 input_enter_apc(struct input_ctx *ictx) 2212 { 2213 log_debug("%s", __func__); 2214 2215 input_clear(ictx); 2216 input_start_timer(ictx); 2217 ictx->last = -1; 2218 } 2219 2220 /* APC terminator (ST) received. */ 2221 static void 2222 input_exit_apc(struct input_ctx *ictx) 2223 { 2224 struct screen_write_ctx *sctx = &ictx->ctx; 2225 2226 if (ictx->flags & INPUT_DISCARD) 2227 return; 2228 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2229 2230 if (!utf8_isvalid(ictx->input_buf)) 2231 return; 2232 screen_set_title(sctx->s, ictx->input_buf); 2233 server_status_window(ictx->wp->window); 2234 } 2235 2236 /* Rename string started. */ 2237 static void 2238 input_enter_rename(struct input_ctx *ictx) 2239 { 2240 log_debug("%s", __func__); 2241 2242 input_clear(ictx); 2243 input_start_timer(ictx); 2244 ictx->last = -1; 2245 } 2246 2247 /* Rename terminator (ST) received. */ 2248 static void 2249 input_exit_rename(struct input_ctx *ictx) 2250 { 2251 if (ictx->flags & INPUT_DISCARD) 2252 return; 2253 if (!options_get_number(ictx->wp->window->options, "allow-rename")) 2254 return; 2255 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2256 2257 if (!utf8_isvalid(ictx->input_buf)) 2258 return; 2259 window_set_name(ictx->wp->window, ictx->input_buf); 2260 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2261 server_status_window(ictx->wp->window); 2262 } 2263 2264 /* Open UTF-8 character. */ 2265 static int 2266 input_top_bit_set(struct input_ctx *ictx) 2267 { 2268 struct screen_write_ctx *sctx = &ictx->ctx; 2269 struct utf8_data *ud = &ictx->utf8data; 2270 2271 ictx->last = -1; 2272 2273 if (!ictx->utf8started) { 2274 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2275 return (0); 2276 ictx->utf8started = 1; 2277 return (0); 2278 } 2279 2280 switch (utf8_append(ud, ictx->ch)) { 2281 case UTF8_MORE: 2282 return (0); 2283 case UTF8_ERROR: 2284 ictx->utf8started = 0; 2285 return (0); 2286 case UTF8_DONE: 2287 break; 2288 } 2289 ictx->utf8started = 0; 2290 2291 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2292 (int)ud->size, ud->data, ud->width); 2293 2294 utf8_copy(&ictx->cell.cell.data, ud); 2295 screen_write_collect_add(sctx, &ictx->cell.cell); 2296 2297 return (0); 2298 } 2299 2300 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2301 static void 2302 input_osc_4(struct input_ctx *ictx, const char *p) 2303 { 2304 struct window_pane *wp = ictx->wp; 2305 char *copy, *s, *next = NULL; 2306 long idx; 2307 u_int r, g, b; 2308 2309 copy = s = xstrdup(p); 2310 while (s != NULL && *s != '\0') { 2311 idx = strtol(s, &next, 10); 2312 if (*next++ != ';') 2313 goto bad; 2314 if (idx < 0 || idx >= 0x100) 2315 goto bad; 2316 2317 s = strsep(&next, ";"); 2318 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2319 s = next; 2320 continue; 2321 } 2322 2323 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2324 s = next; 2325 } 2326 2327 free(copy); 2328 return; 2329 2330 bad: 2331 log_debug("bad OSC 4: %s", p); 2332 free(copy); 2333 } 2334 2335 /* Handle the OSC 10 sequence for setting foreground colour. */ 2336 static void 2337 input_osc_10(struct input_ctx *ictx, const char *p) 2338 { 2339 struct window_pane *wp = ictx->wp; 2340 u_int r, g, b; 2341 2342 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2343 goto bad; 2344 2345 wp->style.gc.fg = colour_join_rgb(r, g, b); 2346 wp->flags |= PANE_REDRAW; 2347 2348 return; 2349 2350 bad: 2351 log_debug("bad OSC 10: %s", p); 2352 } 2353 2354 /* Handle the OSC 11 sequence for setting background colour. */ 2355 static void 2356 input_osc_11(struct input_ctx *ictx, const char *p) 2357 { 2358 struct window_pane *wp = ictx->wp; 2359 u_int r, g, b; 2360 2361 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2362 goto bad; 2363 2364 wp->style.gc.bg = colour_join_rgb(r, g, b); 2365 wp->flags |= PANE_REDRAW; 2366 2367 return; 2368 2369 bad: 2370 log_debug("bad OSC 11: %s", p); 2371 } 2372 2373 /* Handle the OSC 52 sequence for setting the clipboard. */ 2374 static void 2375 input_osc_52(struct input_ctx *ictx, const char *p) 2376 { 2377 struct window_pane *wp = ictx->wp; 2378 char *end; 2379 const char *buf; 2380 size_t len; 2381 u_char *out; 2382 int outlen, state; 2383 struct screen_write_ctx ctx; 2384 struct paste_buffer *pb; 2385 2386 state = options_get_number(global_options, "set-clipboard"); 2387 if (state != 2) 2388 return; 2389 2390 if ((end = strchr(p, ';')) == NULL) 2391 return; 2392 end++; 2393 if (*end == '\0') 2394 return; 2395 log_debug("%s: %s", __func__, end); 2396 2397 if (strcmp(end, "?") == 0) { 2398 if ((pb = paste_get_top(NULL)) != NULL) { 2399 buf = paste_buffer_data(pb, &len); 2400 outlen = 4 * ((len + 2) / 3) + 1; 2401 out = xmalloc(outlen); 2402 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2403 abort(); 2404 free(out); 2405 return; 2406 } 2407 } else { 2408 outlen = 0; 2409 out = NULL; 2410 } 2411 bufferevent_write(wp->event, "\033]52;;", 6); 2412 if (outlen != 0) 2413 bufferevent_write(wp->event, out, outlen); 2414 if (ictx->input_end == INPUT_END_BEL) 2415 bufferevent_write(wp->event, "\007", 1); 2416 else 2417 bufferevent_write(wp->event, "\033\\", 2); 2418 free(out); 2419 return; 2420 } 2421 2422 len = (strlen(end) / 4) * 3; 2423 if (len == 0) 2424 return; 2425 2426 out = xmalloc(len); 2427 if ((outlen = b64_pton(end, out, len)) == -1) { 2428 free(out); 2429 return; 2430 } 2431 2432 screen_write_start(&ctx, wp, NULL); 2433 screen_write_setselection(&ctx, out, outlen); 2434 screen_write_stop(&ctx); 2435 notify_pane("pane-set-clipboard", wp); 2436 2437 paste_add(NULL, out, outlen); 2438 } 2439 2440 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2441 static void 2442 input_osc_104(struct input_ctx *ictx, const char *p) 2443 { 2444 struct window_pane *wp = ictx->wp; 2445 char *copy, *s; 2446 long idx; 2447 2448 if (*p == '\0') { 2449 window_pane_reset_palette(wp); 2450 return; 2451 } 2452 2453 copy = s = xstrdup(p); 2454 while (*s != '\0') { 2455 idx = strtol(s, &s, 10); 2456 if (*s != '\0' && *s != ';') 2457 goto bad; 2458 if (idx < 0 || idx >= 0x100) 2459 goto bad; 2460 2461 window_pane_unset_palette(wp, idx); 2462 if (*s == ';') 2463 s++; 2464 } 2465 free(copy); 2466 return; 2467 2468 bad: 2469 log_debug("bad OSC 104: %s", p); 2470 free(copy); 2471 } 2472