1 /* $OpenBSD: input.c,v 1.185 2020/10/30 11:34:13 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <netinet/in.h> 22 23 #include <ctype.h> 24 #include <resolv.h> 25 #include <stdlib.h> 26 #include <string.h> 27 #include <time.h> 28 29 #include "tmux.h" 30 31 /* 32 * Based on the description by Paul Williams at: 33 * 34 * https://vt100.net/emu/dec_ansi_parser 35 * 36 * With the following changes: 37 * 38 * - 7-bit only. 39 * 40 * - Support for UTF-8. 41 * 42 * - OSC (but not APC) may be terminated by \007 as well as ST. 43 * 44 * - A state for APC similar to OSC. Some terminals appear to use this to set 45 * the title. 46 * 47 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 48 * pretty stupid but not supporting it is more trouble than it is worth. 49 * 50 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 51 * be passed to the underlying terminals. 52 */ 53 54 /* Input parser cell. */ 55 struct input_cell { 56 struct grid_cell cell; 57 int set; 58 int g0set; /* 1 if ACS */ 59 int g1set; /* 1 if ACS */ 60 }; 61 62 /* Input parser argument. */ 63 struct input_param { 64 enum { 65 INPUT_MISSING, 66 INPUT_NUMBER, 67 INPUT_STRING 68 } type; 69 union { 70 int num; 71 char *str; 72 }; 73 }; 74 75 /* Input parser context. */ 76 struct input_ctx { 77 struct window_pane *wp; 78 struct bufferevent *event; 79 struct screen_write_ctx ctx; 80 81 struct input_cell cell; 82 83 struct input_cell old_cell; 84 u_int old_cx; 85 u_int old_cy; 86 int old_mode; 87 88 u_char interm_buf[4]; 89 size_t interm_len; 90 91 u_char param_buf[64]; 92 size_t param_len; 93 94 #define INPUT_BUF_START 32 95 #define INPUT_BUF_LIMIT 1048576 96 u_char *input_buf; 97 size_t input_len; 98 size_t input_space; 99 enum { 100 INPUT_END_ST, 101 INPUT_END_BEL 102 } input_end; 103 104 struct input_param param_list[24]; 105 u_int param_list_len; 106 107 struct utf8_data utf8data; 108 int utf8started; 109 110 int ch; 111 int last; 112 113 int flags; 114 #define INPUT_DISCARD 0x1 115 116 const struct input_state *state; 117 118 struct event timer; 119 120 /* 121 * All input received since we were last in the ground state. Sent to 122 * control clients on connection. 123 */ 124 struct evbuffer *since_ground; 125 }; 126 127 /* Helper functions. */ 128 struct input_transition; 129 static int input_split(struct input_ctx *); 130 static int input_get(struct input_ctx *, u_int, int, int); 131 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 132 static void input_set_state(struct input_ctx *, 133 const struct input_transition *); 134 static void input_reset_cell(struct input_ctx *); 135 136 static void input_osc_4(struct input_ctx *, const char *); 137 static void input_osc_10(struct input_ctx *, const char *); 138 static void input_osc_11(struct input_ctx *, const char *); 139 static void input_osc_52(struct input_ctx *, const char *); 140 static void input_osc_104(struct input_ctx *, const char *); 141 142 /* Transition entry/exit handlers. */ 143 static void input_clear(struct input_ctx *); 144 static void input_ground(struct input_ctx *); 145 static void input_enter_dcs(struct input_ctx *); 146 static void input_enter_osc(struct input_ctx *); 147 static void input_exit_osc(struct input_ctx *); 148 static void input_enter_apc(struct input_ctx *); 149 static void input_exit_apc(struct input_ctx *); 150 static void input_enter_rename(struct input_ctx *); 151 static void input_exit_rename(struct input_ctx *); 152 153 /* Input state handlers. */ 154 static int input_print(struct input_ctx *); 155 static int input_intermediate(struct input_ctx *); 156 static int input_parameter(struct input_ctx *); 157 static int input_input(struct input_ctx *); 158 static int input_c0_dispatch(struct input_ctx *); 159 static int input_esc_dispatch(struct input_ctx *); 160 static int input_csi_dispatch(struct input_ctx *); 161 static void input_csi_dispatch_rm(struct input_ctx *); 162 static void input_csi_dispatch_rm_private(struct input_ctx *); 163 static void input_csi_dispatch_sm(struct input_ctx *); 164 static void input_csi_dispatch_sm_private(struct input_ctx *); 165 static void input_csi_dispatch_winops(struct input_ctx *); 166 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 167 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 168 static void input_csi_dispatch_sgr(struct input_ctx *); 169 static int input_dcs_dispatch(struct input_ctx *); 170 static int input_top_bit_set(struct input_ctx *); 171 static int input_end_bel(struct input_ctx *); 172 173 /* Command table comparison function. */ 174 static int input_table_compare(const void *, const void *); 175 176 /* Command table entry. */ 177 struct input_table_entry { 178 int ch; 179 const char *interm; 180 int type; 181 }; 182 183 /* Escape commands. */ 184 enum input_esc_type { 185 INPUT_ESC_DECALN, 186 INPUT_ESC_DECKPAM, 187 INPUT_ESC_DECKPNM, 188 INPUT_ESC_DECRC, 189 INPUT_ESC_DECSC, 190 INPUT_ESC_HTS, 191 INPUT_ESC_IND, 192 INPUT_ESC_NEL, 193 INPUT_ESC_RI, 194 INPUT_ESC_RIS, 195 INPUT_ESC_SCSG0_OFF, 196 INPUT_ESC_SCSG0_ON, 197 INPUT_ESC_SCSG1_OFF, 198 INPUT_ESC_SCSG1_ON, 199 INPUT_ESC_ST, 200 }; 201 202 /* Escape command table. */ 203 static const struct input_table_entry input_esc_table[] = { 204 { '0', "(", INPUT_ESC_SCSG0_ON }, 205 { '0', ")", INPUT_ESC_SCSG1_ON }, 206 { '7', "", INPUT_ESC_DECSC }, 207 { '8', "", INPUT_ESC_DECRC }, 208 { '8', "#", INPUT_ESC_DECALN }, 209 { '=', "", INPUT_ESC_DECKPAM }, 210 { '>', "", INPUT_ESC_DECKPNM }, 211 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 212 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 213 { 'D', "", INPUT_ESC_IND }, 214 { 'E', "", INPUT_ESC_NEL }, 215 { 'H', "", INPUT_ESC_HTS }, 216 { 'M', "", INPUT_ESC_RI }, 217 { '\\', "", INPUT_ESC_ST }, 218 { 'c', "", INPUT_ESC_RIS }, 219 }; 220 221 /* Control (CSI) commands. */ 222 enum input_csi_type { 223 INPUT_CSI_CBT, 224 INPUT_CSI_CNL, 225 INPUT_CSI_CPL, 226 INPUT_CSI_CUB, 227 INPUT_CSI_CUD, 228 INPUT_CSI_CUF, 229 INPUT_CSI_CUP, 230 INPUT_CSI_CUU, 231 INPUT_CSI_DA, 232 INPUT_CSI_DA_TWO, 233 INPUT_CSI_DCH, 234 INPUT_CSI_DECSCUSR, 235 INPUT_CSI_DECSTBM, 236 INPUT_CSI_DL, 237 INPUT_CSI_DSR, 238 INPUT_CSI_ECH, 239 INPUT_CSI_ED, 240 INPUT_CSI_EL, 241 INPUT_CSI_HPA, 242 INPUT_CSI_ICH, 243 INPUT_CSI_IL, 244 INPUT_CSI_MODOFF, 245 INPUT_CSI_MODSET, 246 INPUT_CSI_RCP, 247 INPUT_CSI_REP, 248 INPUT_CSI_RM, 249 INPUT_CSI_RM_PRIVATE, 250 INPUT_CSI_SCP, 251 INPUT_CSI_SD, 252 INPUT_CSI_SGR, 253 INPUT_CSI_SM, 254 INPUT_CSI_SM_PRIVATE, 255 INPUT_CSI_SU, 256 INPUT_CSI_TBC, 257 INPUT_CSI_VPA, 258 INPUT_CSI_WINOPS, 259 INPUT_CSI_XDA, 260 }; 261 262 /* Control (CSI) command table. */ 263 static const struct input_table_entry input_csi_table[] = { 264 { '@', "", INPUT_CSI_ICH }, 265 { 'A', "", INPUT_CSI_CUU }, 266 { 'B', "", INPUT_CSI_CUD }, 267 { 'C', "", INPUT_CSI_CUF }, 268 { 'D', "", INPUT_CSI_CUB }, 269 { 'E', "", INPUT_CSI_CNL }, 270 { 'F', "", INPUT_CSI_CPL }, 271 { 'G', "", INPUT_CSI_HPA }, 272 { 'H', "", INPUT_CSI_CUP }, 273 { 'J', "", INPUT_CSI_ED }, 274 { 'K', "", INPUT_CSI_EL }, 275 { 'L', "", INPUT_CSI_IL }, 276 { 'M', "", INPUT_CSI_DL }, 277 { 'P', "", INPUT_CSI_DCH }, 278 { 'S', "", INPUT_CSI_SU }, 279 { 'T', "", INPUT_CSI_SD }, 280 { 'X', "", INPUT_CSI_ECH }, 281 { 'Z', "", INPUT_CSI_CBT }, 282 { '`', "", INPUT_CSI_HPA }, 283 { 'b', "", INPUT_CSI_REP }, 284 { 'c', "", INPUT_CSI_DA }, 285 { 'c', ">", INPUT_CSI_DA_TWO }, 286 { 'd', "", INPUT_CSI_VPA }, 287 { 'f', "", INPUT_CSI_CUP }, 288 { 'g', "", INPUT_CSI_TBC }, 289 { 'h', "", INPUT_CSI_SM }, 290 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 291 { 'l', "", INPUT_CSI_RM }, 292 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 293 { 'm', "", INPUT_CSI_SGR }, 294 { 'm', ">", INPUT_CSI_MODSET }, 295 { 'n', "", INPUT_CSI_DSR }, 296 { 'n', ">", INPUT_CSI_MODOFF }, 297 { 'q', " ", INPUT_CSI_DECSCUSR }, 298 { 'q', ">", INPUT_CSI_XDA }, 299 { 'r', "", INPUT_CSI_DECSTBM }, 300 { 's', "", INPUT_CSI_SCP }, 301 { 't', "", INPUT_CSI_WINOPS }, 302 { 'u', "", INPUT_CSI_RCP }, 303 }; 304 305 /* Input transition. */ 306 struct input_transition { 307 int first; 308 int last; 309 310 int (*handler)(struct input_ctx *); 311 const struct input_state *state; 312 }; 313 314 /* Input state. */ 315 struct input_state { 316 const char *name; 317 void (*enter)(struct input_ctx *); 318 void (*exit)(struct input_ctx *); 319 const struct input_transition *transitions; 320 }; 321 322 /* State transitions available from all states. */ 323 #define INPUT_STATE_ANYWHERE \ 324 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 325 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 326 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 327 328 /* Forward declarations of state tables. */ 329 static const struct input_transition input_state_ground_table[]; 330 static const struct input_transition input_state_esc_enter_table[]; 331 static const struct input_transition input_state_esc_intermediate_table[]; 332 static const struct input_transition input_state_csi_enter_table[]; 333 static const struct input_transition input_state_csi_parameter_table[]; 334 static const struct input_transition input_state_csi_intermediate_table[]; 335 static const struct input_transition input_state_csi_ignore_table[]; 336 static const struct input_transition input_state_dcs_enter_table[]; 337 static const struct input_transition input_state_dcs_parameter_table[]; 338 static const struct input_transition input_state_dcs_intermediate_table[]; 339 static const struct input_transition input_state_dcs_handler_table[]; 340 static const struct input_transition input_state_dcs_escape_table[]; 341 static const struct input_transition input_state_dcs_ignore_table[]; 342 static const struct input_transition input_state_osc_string_table[]; 343 static const struct input_transition input_state_apc_string_table[]; 344 static const struct input_transition input_state_rename_string_table[]; 345 static const struct input_transition input_state_consume_st_table[]; 346 347 /* ground state definition. */ 348 static const struct input_state input_state_ground = { 349 "ground", 350 input_ground, NULL, 351 input_state_ground_table 352 }; 353 354 /* esc_enter state definition. */ 355 static const struct input_state input_state_esc_enter = { 356 "esc_enter", 357 input_clear, NULL, 358 input_state_esc_enter_table 359 }; 360 361 /* esc_intermediate state definition. */ 362 static const struct input_state input_state_esc_intermediate = { 363 "esc_intermediate", 364 NULL, NULL, 365 input_state_esc_intermediate_table 366 }; 367 368 /* csi_enter state definition. */ 369 static const struct input_state input_state_csi_enter = { 370 "csi_enter", 371 input_clear, NULL, 372 input_state_csi_enter_table 373 }; 374 375 /* csi_parameter state definition. */ 376 static const struct input_state input_state_csi_parameter = { 377 "csi_parameter", 378 NULL, NULL, 379 input_state_csi_parameter_table 380 }; 381 382 /* csi_intermediate state definition. */ 383 static const struct input_state input_state_csi_intermediate = { 384 "csi_intermediate", 385 NULL, NULL, 386 input_state_csi_intermediate_table 387 }; 388 389 /* csi_ignore state definition. */ 390 static const struct input_state input_state_csi_ignore = { 391 "csi_ignore", 392 NULL, NULL, 393 input_state_csi_ignore_table 394 }; 395 396 /* dcs_enter state definition. */ 397 static const struct input_state input_state_dcs_enter = { 398 "dcs_enter", 399 input_enter_dcs, NULL, 400 input_state_dcs_enter_table 401 }; 402 403 /* dcs_parameter state definition. */ 404 static const struct input_state input_state_dcs_parameter = { 405 "dcs_parameter", 406 NULL, NULL, 407 input_state_dcs_parameter_table 408 }; 409 410 /* dcs_intermediate state definition. */ 411 static const struct input_state input_state_dcs_intermediate = { 412 "dcs_intermediate", 413 NULL, NULL, 414 input_state_dcs_intermediate_table 415 }; 416 417 /* dcs_handler state definition. */ 418 static const struct input_state input_state_dcs_handler = { 419 "dcs_handler", 420 NULL, NULL, 421 input_state_dcs_handler_table 422 }; 423 424 /* dcs_escape state definition. */ 425 static const struct input_state input_state_dcs_escape = { 426 "dcs_escape", 427 NULL, NULL, 428 input_state_dcs_escape_table 429 }; 430 431 /* dcs_ignore state definition. */ 432 static const struct input_state input_state_dcs_ignore = { 433 "dcs_ignore", 434 NULL, NULL, 435 input_state_dcs_ignore_table 436 }; 437 438 /* osc_string state definition. */ 439 static const struct input_state input_state_osc_string = { 440 "osc_string", 441 input_enter_osc, input_exit_osc, 442 input_state_osc_string_table 443 }; 444 445 /* apc_string state definition. */ 446 static const struct input_state input_state_apc_string = { 447 "apc_string", 448 input_enter_apc, input_exit_apc, 449 input_state_apc_string_table 450 }; 451 452 /* rename_string state definition. */ 453 static const struct input_state input_state_rename_string = { 454 "rename_string", 455 input_enter_rename, input_exit_rename, 456 input_state_rename_string_table 457 }; 458 459 /* consume_st state definition. */ 460 static const struct input_state input_state_consume_st = { 461 "consume_st", 462 input_enter_rename, NULL, /* rename also waits for ST */ 463 input_state_consume_st_table 464 }; 465 466 /* ground state table. */ 467 static const struct input_transition input_state_ground_table[] = { 468 INPUT_STATE_ANYWHERE, 469 470 { 0x00, 0x17, input_c0_dispatch, NULL }, 471 { 0x19, 0x19, input_c0_dispatch, NULL }, 472 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 473 { 0x20, 0x7e, input_print, NULL }, 474 { 0x7f, 0x7f, NULL, NULL }, 475 { 0x80, 0xff, input_top_bit_set, NULL }, 476 477 { -1, -1, NULL, NULL } 478 }; 479 480 /* esc_enter state table. */ 481 static const struct input_transition input_state_esc_enter_table[] = { 482 INPUT_STATE_ANYWHERE, 483 484 { 0x00, 0x17, input_c0_dispatch, NULL }, 485 { 0x19, 0x19, input_c0_dispatch, NULL }, 486 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 487 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 488 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 489 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 490 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 491 { 0x58, 0x58, NULL, &input_state_consume_st }, 492 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 493 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 494 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 495 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 496 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 497 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 498 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 499 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 500 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 501 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 502 { 0x7f, 0xff, NULL, NULL }, 503 504 { -1, -1, NULL, NULL } 505 }; 506 507 /* esc_intermediate state table. */ 508 static const struct input_transition input_state_esc_intermediate_table[] = { 509 INPUT_STATE_ANYWHERE, 510 511 { 0x00, 0x17, input_c0_dispatch, NULL }, 512 { 0x19, 0x19, input_c0_dispatch, NULL }, 513 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 514 { 0x20, 0x2f, input_intermediate, NULL }, 515 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 516 { 0x7f, 0xff, NULL, NULL }, 517 518 { -1, -1, NULL, NULL } 519 }; 520 521 /* csi_enter state table. */ 522 static const struct input_transition input_state_csi_enter_table[] = { 523 INPUT_STATE_ANYWHERE, 524 525 { 0x00, 0x17, input_c0_dispatch, NULL }, 526 { 0x19, 0x19, input_c0_dispatch, NULL }, 527 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 528 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 529 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 530 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 531 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 532 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 533 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 534 { 0x7f, 0xff, NULL, NULL }, 535 536 { -1, -1, NULL, NULL } 537 }; 538 539 /* csi_parameter state table. */ 540 static const struct input_transition input_state_csi_parameter_table[] = { 541 INPUT_STATE_ANYWHERE, 542 543 { 0x00, 0x17, input_c0_dispatch, NULL }, 544 { 0x19, 0x19, input_c0_dispatch, NULL }, 545 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 546 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 547 { 0x30, 0x39, input_parameter, NULL }, 548 { 0x3a, 0x3a, input_parameter, NULL }, 549 { 0x3b, 0x3b, input_parameter, NULL }, 550 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 551 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 552 { 0x7f, 0xff, NULL, NULL }, 553 554 { -1, -1, NULL, NULL } 555 }; 556 557 /* csi_intermediate state table. */ 558 static const struct input_transition input_state_csi_intermediate_table[] = { 559 INPUT_STATE_ANYWHERE, 560 561 { 0x00, 0x17, input_c0_dispatch, NULL }, 562 { 0x19, 0x19, input_c0_dispatch, NULL }, 563 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 564 { 0x20, 0x2f, input_intermediate, NULL }, 565 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 566 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 567 { 0x7f, 0xff, NULL, NULL }, 568 569 { -1, -1, NULL, NULL } 570 }; 571 572 /* csi_ignore state table. */ 573 static const struct input_transition input_state_csi_ignore_table[] = { 574 INPUT_STATE_ANYWHERE, 575 576 { 0x00, 0x17, input_c0_dispatch, NULL }, 577 { 0x19, 0x19, input_c0_dispatch, NULL }, 578 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 579 { 0x20, 0x3f, NULL, NULL }, 580 { 0x40, 0x7e, NULL, &input_state_ground }, 581 { 0x7f, 0xff, NULL, NULL }, 582 583 { -1, -1, NULL, NULL } 584 }; 585 586 /* dcs_enter state table. */ 587 static const struct input_transition input_state_dcs_enter_table[] = { 588 INPUT_STATE_ANYWHERE, 589 590 { 0x00, 0x17, NULL, NULL }, 591 { 0x19, 0x19, NULL, NULL }, 592 { 0x1c, 0x1f, NULL, NULL }, 593 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 594 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 595 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 596 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 597 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 598 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 599 { 0x7f, 0xff, NULL, NULL }, 600 601 { -1, -1, NULL, NULL } 602 }; 603 604 /* dcs_parameter state table. */ 605 static const struct input_transition input_state_dcs_parameter_table[] = { 606 INPUT_STATE_ANYWHERE, 607 608 { 0x00, 0x17, NULL, NULL }, 609 { 0x19, 0x19, NULL, NULL }, 610 { 0x1c, 0x1f, NULL, NULL }, 611 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 612 { 0x30, 0x39, input_parameter, NULL }, 613 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 614 { 0x3b, 0x3b, input_parameter, NULL }, 615 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 616 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 617 { 0x7f, 0xff, NULL, NULL }, 618 619 { -1, -1, NULL, NULL } 620 }; 621 622 /* dcs_intermediate state table. */ 623 static const struct input_transition input_state_dcs_intermediate_table[] = { 624 INPUT_STATE_ANYWHERE, 625 626 { 0x00, 0x17, NULL, NULL }, 627 { 0x19, 0x19, NULL, NULL }, 628 { 0x1c, 0x1f, NULL, NULL }, 629 { 0x20, 0x2f, input_intermediate, NULL }, 630 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 631 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 632 { 0x7f, 0xff, NULL, NULL }, 633 634 { -1, -1, NULL, NULL } 635 }; 636 637 /* dcs_handler state table. */ 638 static const struct input_transition input_state_dcs_handler_table[] = { 639 /* No INPUT_STATE_ANYWHERE */ 640 641 { 0x00, 0x1a, input_input, NULL }, 642 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 643 { 0x1c, 0xff, input_input, NULL }, 644 645 { -1, -1, NULL, NULL } 646 }; 647 648 /* dcs_escape state table. */ 649 static const struct input_transition input_state_dcs_escape_table[] = { 650 /* No INPUT_STATE_ANYWHERE */ 651 652 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 653 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 654 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 655 656 { -1, -1, NULL, NULL } 657 }; 658 659 /* dcs_ignore state table. */ 660 static const struct input_transition input_state_dcs_ignore_table[] = { 661 INPUT_STATE_ANYWHERE, 662 663 { 0x00, 0x17, NULL, NULL }, 664 { 0x19, 0x19, NULL, NULL }, 665 { 0x1c, 0x1f, NULL, NULL }, 666 { 0x20, 0xff, NULL, NULL }, 667 668 { -1, -1, NULL, NULL } 669 }; 670 671 /* osc_string state table. */ 672 static const struct input_transition input_state_osc_string_table[] = { 673 INPUT_STATE_ANYWHERE, 674 675 { 0x00, 0x06, NULL, NULL }, 676 { 0x07, 0x07, input_end_bel, &input_state_ground }, 677 { 0x08, 0x17, NULL, NULL }, 678 { 0x19, 0x19, NULL, NULL }, 679 { 0x1c, 0x1f, NULL, NULL }, 680 { 0x20, 0xff, input_input, NULL }, 681 682 { -1, -1, NULL, NULL } 683 }; 684 685 /* apc_string state table. */ 686 static const struct input_transition input_state_apc_string_table[] = { 687 INPUT_STATE_ANYWHERE, 688 689 { 0x00, 0x17, NULL, NULL }, 690 { 0x19, 0x19, NULL, NULL }, 691 { 0x1c, 0x1f, NULL, NULL }, 692 { 0x20, 0xff, input_input, NULL }, 693 694 { -1, -1, NULL, NULL } 695 }; 696 697 /* rename_string state table. */ 698 static const struct input_transition input_state_rename_string_table[] = { 699 INPUT_STATE_ANYWHERE, 700 701 { 0x00, 0x17, NULL, NULL }, 702 { 0x19, 0x19, NULL, NULL }, 703 { 0x1c, 0x1f, NULL, NULL }, 704 { 0x20, 0xff, input_input, NULL }, 705 706 { -1, -1, NULL, NULL } 707 }; 708 709 /* consume_st state table. */ 710 static const struct input_transition input_state_consume_st_table[] = { 711 INPUT_STATE_ANYWHERE, 712 713 { 0x00, 0x17, NULL, NULL }, 714 { 0x19, 0x19, NULL, NULL }, 715 { 0x1c, 0x1f, NULL, NULL }, 716 { 0x20, 0xff, NULL, NULL }, 717 718 { -1, -1, NULL, NULL } 719 }; 720 721 /* Input table compare. */ 722 static int 723 input_table_compare(const void *key, const void *value) 724 { 725 const struct input_ctx *ictx = key; 726 const struct input_table_entry *entry = value; 727 728 if (ictx->ch != entry->ch) 729 return (ictx->ch - entry->ch); 730 return (strcmp(ictx->interm_buf, entry->interm)); 731 } 732 733 /* 734 * Timer - if this expires then have been waiting for a terminator for too 735 * long, so reset to ground. 736 */ 737 static void 738 input_timer_callback(__unused int fd, __unused short events, void *arg) 739 { 740 struct input_ctx *ictx = arg; 741 742 log_debug("%s: %s expired" , __func__, ictx->state->name); 743 input_reset(ictx, 0); 744 } 745 746 /* Start the timer. */ 747 static void 748 input_start_timer(struct input_ctx *ictx) 749 { 750 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 751 752 event_del(&ictx->timer); 753 event_add(&ictx->timer, &tv); 754 } 755 756 /* Reset cell state to default. */ 757 static void 758 input_reset_cell(struct input_ctx *ictx) 759 { 760 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 761 ictx->cell.set = 0; 762 ictx->cell.g0set = ictx->cell.g1set = 0; 763 764 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 765 ictx->old_cx = 0; 766 ictx->old_cy = 0; 767 } 768 769 /* Save screen state. */ 770 static void 771 input_save_state(struct input_ctx *ictx) 772 { 773 struct screen_write_ctx *sctx = &ictx->ctx; 774 struct screen *s = sctx->s; 775 776 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 777 ictx->old_cx = s->cx; 778 ictx->old_cy = s->cy; 779 ictx->old_mode = s->mode; 780 } 781 782 /* Restore screen state. */ 783 static void 784 input_restore_state(struct input_ctx *ictx) 785 { 786 struct screen_write_ctx *sctx = &ictx->ctx; 787 788 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 789 if (ictx->old_mode & MODE_ORIGIN) 790 screen_write_mode_set(sctx, MODE_ORIGIN); 791 else 792 screen_write_mode_clear(sctx, MODE_ORIGIN); 793 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 794 } 795 796 /* Initialise input parser. */ 797 struct input_ctx * 798 input_init(struct window_pane *wp, struct bufferevent *bev) 799 { 800 struct input_ctx *ictx; 801 802 ictx = xcalloc(1, sizeof *ictx); 803 ictx->wp = wp; 804 ictx->event = bev; 805 806 ictx->input_space = INPUT_BUF_START; 807 ictx->input_buf = xmalloc(INPUT_BUF_START); 808 809 ictx->since_ground = evbuffer_new(); 810 if (ictx->since_ground == NULL) 811 fatalx("out of memory"); 812 813 evtimer_set(&ictx->timer, input_timer_callback, ictx); 814 815 input_reset(ictx, 0); 816 return (ictx); 817 } 818 819 /* Destroy input parser. */ 820 void 821 input_free(struct input_ctx *ictx) 822 { 823 u_int i; 824 825 for (i = 0; i < ictx->param_list_len; i++) { 826 if (ictx->param_list[i].type == INPUT_STRING) 827 free(ictx->param_list[i].str); 828 } 829 830 event_del(&ictx->timer); 831 832 free(ictx->input_buf); 833 evbuffer_free(ictx->since_ground); 834 835 free(ictx); 836 } 837 838 /* Reset input state and clear screen. */ 839 void 840 input_reset(struct input_ctx *ictx, int clear) 841 { 842 struct screen_write_ctx *sctx = &ictx->ctx; 843 struct window_pane *wp = ictx->wp; 844 845 input_reset_cell(ictx); 846 847 if (clear && wp != NULL) { 848 if (TAILQ_EMPTY(&wp->modes)) 849 screen_write_start_pane(sctx, wp, &wp->base); 850 else 851 screen_write_start(sctx, &wp->base); 852 screen_write_reset(sctx); 853 screen_write_stop(sctx); 854 } 855 856 input_clear(ictx); 857 858 ictx->last = -1; 859 860 ictx->state = &input_state_ground; 861 ictx->flags = 0; 862 } 863 864 /* Return pending data. */ 865 struct evbuffer * 866 input_pending(struct input_ctx *ictx) 867 { 868 return (ictx->since_ground); 869 } 870 871 /* Change input state. */ 872 static void 873 input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 874 { 875 if (ictx->state->exit != NULL) 876 ictx->state->exit(ictx); 877 ictx->state = itr->state; 878 if (ictx->state->enter != NULL) 879 ictx->state->enter(ictx); 880 } 881 882 /* Parse data. */ 883 static void 884 input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 885 { 886 struct screen_write_ctx *sctx = &ictx->ctx; 887 const struct input_state *state = NULL; 888 const struct input_transition *itr = NULL; 889 size_t off = 0; 890 891 /* Parse the input. */ 892 while (off < len) { 893 ictx->ch = buf[off++]; 894 895 /* Find the transition. */ 896 if (ictx->state != state || 897 itr == NULL || 898 ictx->ch < itr->first || 899 ictx->ch > itr->last) { 900 itr = ictx->state->transitions; 901 while (itr->first != -1 && itr->last != -1) { 902 if (ictx->ch >= itr->first && 903 ictx->ch <= itr->last) 904 break; 905 itr++; 906 } 907 if (itr->first == -1 || itr->last == -1) { 908 /* No transition? Eh? */ 909 fatalx("no transition from state"); 910 } 911 } 912 state = ictx->state; 913 914 /* 915 * Any state except print stops the current collection. This is 916 * an optimization to avoid checking if the attributes have 917 * changed for every character. It will stop unnecessarily for 918 * sequences that don't make a terminal change, but they should 919 * be the minority. 920 */ 921 if (itr->handler != input_print) 922 screen_write_collect_end(sctx); 923 924 /* 925 * Execute the handler, if any. Don't switch state if it 926 * returns non-zero. 927 */ 928 if (itr->handler != NULL && itr->handler(ictx) != 0) 929 continue; 930 931 /* And switch state, if necessary. */ 932 if (itr->state != NULL) 933 input_set_state(ictx, itr); 934 935 /* If not in ground state, save input. */ 936 if (ictx->state != &input_state_ground) 937 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 938 } 939 } 940 941 /* Parse input from pane. */ 942 void 943 input_parse_pane(struct window_pane *wp) 944 { 945 void *new_data; 946 size_t new_size; 947 948 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 949 input_parse_buffer(wp, new_data, new_size); 950 window_pane_update_used_data(wp, &wp->offset, new_size); 951 } 952 953 /* Parse given input. */ 954 void 955 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 956 { 957 struct input_ctx *ictx = wp->ictx; 958 struct screen_write_ctx *sctx = &ictx->ctx; 959 960 if (len == 0) 961 return; 962 963 window_update_activity(wp->window); 964 wp->flags |= PANE_CHANGED; 965 966 /* NULL wp if there is a mode set as don't want to update the tty. */ 967 if (TAILQ_EMPTY(&wp->modes)) 968 screen_write_start_pane(sctx, wp, &wp->base); 969 else 970 screen_write_start(sctx, &wp->base); 971 972 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 973 ictx->state->name, len, (int)len, buf); 974 975 input_parse(ictx, buf, len); 976 screen_write_stop(sctx); 977 } 978 979 /* Parse given input for screen. */ 980 void 981 input_parse_screen(struct input_ctx *ictx, struct screen *s, 982 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 983 { 984 struct screen_write_ctx *sctx = &ictx->ctx; 985 986 if (len == 0) 987 return; 988 989 screen_write_start_callback(sctx, s, cb, arg); 990 input_parse(ictx, buf, len); 991 screen_write_stop(sctx); 992 } 993 994 /* Split the parameter list (if any). */ 995 static int 996 input_split(struct input_ctx *ictx) 997 { 998 const char *errstr; 999 char *ptr, *out; 1000 struct input_param *ip; 1001 u_int i; 1002 1003 for (i = 0; i < ictx->param_list_len; i++) { 1004 if (ictx->param_list[i].type == INPUT_STRING) 1005 free(ictx->param_list[i].str); 1006 } 1007 ictx->param_list_len = 0; 1008 1009 if (ictx->param_len == 0) 1010 return (0); 1011 ip = &ictx->param_list[0]; 1012 1013 ptr = ictx->param_buf; 1014 while ((out = strsep(&ptr, ";")) != NULL) { 1015 if (*out == '\0') 1016 ip->type = INPUT_MISSING; 1017 else { 1018 if (strchr(out, ':') != NULL) { 1019 ip->type = INPUT_STRING; 1020 ip->str = xstrdup(out); 1021 } else { 1022 ip->type = INPUT_NUMBER; 1023 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1024 if (errstr != NULL) 1025 return (-1); 1026 } 1027 } 1028 ip = &ictx->param_list[++ictx->param_list_len]; 1029 if (ictx->param_list_len == nitems(ictx->param_list)) 1030 return (-1); 1031 } 1032 1033 for (i = 0; i < ictx->param_list_len; i++) { 1034 ip = &ictx->param_list[i]; 1035 if (ip->type == INPUT_MISSING) 1036 log_debug("parameter %u: missing", i); 1037 else if (ip->type == INPUT_STRING) 1038 log_debug("parameter %u: string %s", i, ip->str); 1039 else if (ip->type == INPUT_NUMBER) 1040 log_debug("parameter %u: number %d", i, ip->num); 1041 } 1042 1043 return (0); 1044 } 1045 1046 /* Get an argument or return default value. */ 1047 static int 1048 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1049 { 1050 struct input_param *ip; 1051 int retval; 1052 1053 if (validx >= ictx->param_list_len) 1054 return (defval); 1055 ip = &ictx->param_list[validx]; 1056 if (ip->type == INPUT_MISSING) 1057 return (defval); 1058 if (ip->type == INPUT_STRING) 1059 return (-1); 1060 retval = ip->num; 1061 if (retval < minval) 1062 return (minval); 1063 return (retval); 1064 } 1065 1066 /* Reply to terminal query. */ 1067 static void 1068 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1069 { 1070 struct bufferevent *bev = ictx->event; 1071 va_list ap; 1072 char *reply; 1073 1074 va_start(ap, fmt); 1075 xvasprintf(&reply, fmt, ap); 1076 va_end(ap); 1077 1078 bufferevent_write(bev, reply, strlen(reply)); 1079 free(reply); 1080 } 1081 1082 /* Clear saved state. */ 1083 static void 1084 input_clear(struct input_ctx *ictx) 1085 { 1086 event_del(&ictx->timer); 1087 1088 *ictx->interm_buf = '\0'; 1089 ictx->interm_len = 0; 1090 1091 *ictx->param_buf = '\0'; 1092 ictx->param_len = 0; 1093 1094 *ictx->input_buf = '\0'; 1095 ictx->input_len = 0; 1096 1097 ictx->input_end = INPUT_END_ST; 1098 1099 ictx->flags &= ~INPUT_DISCARD; 1100 } 1101 1102 /* Reset for ground state. */ 1103 static void 1104 input_ground(struct input_ctx *ictx) 1105 { 1106 event_del(&ictx->timer); 1107 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1108 1109 if (ictx->input_space > INPUT_BUF_START) { 1110 ictx->input_space = INPUT_BUF_START; 1111 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1112 } 1113 } 1114 1115 /* Output this character to the screen. */ 1116 static int 1117 input_print(struct input_ctx *ictx) 1118 { 1119 struct screen_write_ctx *sctx = &ictx->ctx; 1120 int set; 1121 1122 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1123 1124 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1125 if (set == 1) 1126 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1127 else 1128 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1129 1130 utf8_set(&ictx->cell.cell.data, ictx->ch); 1131 screen_write_collect_add(sctx, &ictx->cell.cell); 1132 ictx->last = ictx->ch; 1133 1134 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1135 1136 return (0); 1137 } 1138 1139 /* Collect intermediate string. */ 1140 static int 1141 input_intermediate(struct input_ctx *ictx) 1142 { 1143 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1144 ictx->flags |= INPUT_DISCARD; 1145 else { 1146 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1147 ictx->interm_buf[ictx->interm_len] = '\0'; 1148 } 1149 1150 return (0); 1151 } 1152 1153 /* Collect parameter string. */ 1154 static int 1155 input_parameter(struct input_ctx *ictx) 1156 { 1157 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1158 ictx->flags |= INPUT_DISCARD; 1159 else { 1160 ictx->param_buf[ictx->param_len++] = ictx->ch; 1161 ictx->param_buf[ictx->param_len] = '\0'; 1162 } 1163 1164 return (0); 1165 } 1166 1167 /* Collect input string. */ 1168 static int 1169 input_input(struct input_ctx *ictx) 1170 { 1171 size_t available; 1172 1173 available = ictx->input_space; 1174 while (ictx->input_len + 1 >= available) { 1175 available *= 2; 1176 if (available > INPUT_BUF_LIMIT) { 1177 ictx->flags |= INPUT_DISCARD; 1178 return (0); 1179 } 1180 ictx->input_buf = xrealloc(ictx->input_buf, available); 1181 ictx->input_space = available; 1182 } 1183 ictx->input_buf[ictx->input_len++] = ictx->ch; 1184 ictx->input_buf[ictx->input_len] = '\0'; 1185 1186 return (0); 1187 } 1188 1189 /* Execute C0 control sequence. */ 1190 static int 1191 input_c0_dispatch(struct input_ctx *ictx) 1192 { 1193 struct screen_write_ctx *sctx = &ictx->ctx; 1194 struct window_pane *wp = ictx->wp; 1195 struct screen *s = sctx->s; 1196 1197 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1198 1199 log_debug("%s: '%c'", __func__, ictx->ch); 1200 1201 switch (ictx->ch) { 1202 case '\000': /* NUL */ 1203 break; 1204 case '\007': /* BEL */ 1205 if (wp != NULL) 1206 alerts_queue(wp->window, WINDOW_BELL); 1207 break; 1208 case '\010': /* BS */ 1209 screen_write_backspace(sctx); 1210 break; 1211 case '\011': /* HT */ 1212 /* Don't tab beyond the end of the line. */ 1213 if (s->cx >= screen_size_x(s) - 1) 1214 break; 1215 1216 /* Find the next tab point, or use the last column if none. */ 1217 do { 1218 s->cx++; 1219 if (bit_test(s->tabs, s->cx)) 1220 break; 1221 } while (s->cx < screen_size_x(s) - 1); 1222 break; 1223 case '\012': /* LF */ 1224 case '\013': /* VT */ 1225 case '\014': /* FF */ 1226 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1227 if (s->mode & MODE_CRLF) 1228 screen_write_carriagereturn(sctx); 1229 break; 1230 case '\015': /* CR */ 1231 screen_write_carriagereturn(sctx); 1232 break; 1233 case '\016': /* SO */ 1234 ictx->cell.set = 1; 1235 break; 1236 case '\017': /* SI */ 1237 ictx->cell.set = 0; 1238 break; 1239 default: 1240 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1241 break; 1242 } 1243 1244 ictx->last = -1; 1245 return (0); 1246 } 1247 1248 /* Execute escape sequence. */ 1249 static int 1250 input_esc_dispatch(struct input_ctx *ictx) 1251 { 1252 struct screen_write_ctx *sctx = &ictx->ctx; 1253 struct window_pane *wp = ictx->wp; 1254 struct screen *s = sctx->s; 1255 struct input_table_entry *entry; 1256 1257 if (ictx->flags & INPUT_DISCARD) 1258 return (0); 1259 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1260 1261 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1262 sizeof input_esc_table[0], input_table_compare); 1263 if (entry == NULL) { 1264 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1265 return (0); 1266 } 1267 1268 switch (entry->type) { 1269 case INPUT_ESC_RIS: 1270 if (wp != NULL) 1271 window_pane_reset_palette(wp); 1272 input_reset_cell(ictx); 1273 screen_write_reset(sctx); 1274 break; 1275 case INPUT_ESC_IND: 1276 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1277 break; 1278 case INPUT_ESC_NEL: 1279 screen_write_carriagereturn(sctx); 1280 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1281 break; 1282 case INPUT_ESC_HTS: 1283 if (s->cx < screen_size_x(s)) 1284 bit_set(s->tabs, s->cx); 1285 break; 1286 case INPUT_ESC_RI: 1287 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1288 break; 1289 case INPUT_ESC_DECKPAM: 1290 screen_write_mode_set(sctx, MODE_KKEYPAD); 1291 break; 1292 case INPUT_ESC_DECKPNM: 1293 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1294 break; 1295 case INPUT_ESC_DECSC: 1296 input_save_state(ictx); 1297 break; 1298 case INPUT_ESC_DECRC: 1299 input_restore_state(ictx); 1300 break; 1301 case INPUT_ESC_DECALN: 1302 screen_write_alignmenttest(sctx); 1303 break; 1304 case INPUT_ESC_SCSG0_ON: 1305 ictx->cell.g0set = 1; 1306 break; 1307 case INPUT_ESC_SCSG0_OFF: 1308 ictx->cell.g0set = 0; 1309 break; 1310 case INPUT_ESC_SCSG1_ON: 1311 ictx->cell.g1set = 1; 1312 break; 1313 case INPUT_ESC_SCSG1_OFF: 1314 ictx->cell.g1set = 0; 1315 break; 1316 case INPUT_ESC_ST: 1317 /* ST terminates OSC but the state transition already did it. */ 1318 break; 1319 } 1320 1321 ictx->last = -1; 1322 return (0); 1323 } 1324 1325 /* Execute control sequence. */ 1326 static int 1327 input_csi_dispatch(struct input_ctx *ictx) 1328 { 1329 struct screen_write_ctx *sctx = &ictx->ctx; 1330 struct screen *s = sctx->s; 1331 struct input_table_entry *entry; 1332 int i, n, m; 1333 u_int cx, bg = ictx->cell.cell.bg; 1334 1335 if (ictx->flags & INPUT_DISCARD) 1336 return (0); 1337 1338 log_debug("%s: '%c' \"%s\" \"%s\"", 1339 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1340 1341 if (input_split(ictx) != 0) 1342 return (0); 1343 1344 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1345 sizeof input_csi_table[0], input_table_compare); 1346 if (entry == NULL) { 1347 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1348 return (0); 1349 } 1350 1351 switch (entry->type) { 1352 case INPUT_CSI_CBT: 1353 /* Find the previous tab point, n times. */ 1354 cx = s->cx; 1355 if (cx > screen_size_x(s) - 1) 1356 cx = screen_size_x(s) - 1; 1357 n = input_get(ictx, 0, 1, 1); 1358 if (n == -1) 1359 break; 1360 while (cx > 0 && n-- > 0) { 1361 do 1362 cx--; 1363 while (cx > 0 && !bit_test(s->tabs, cx)); 1364 } 1365 s->cx = cx; 1366 break; 1367 case INPUT_CSI_CUB: 1368 n = input_get(ictx, 0, 1, 1); 1369 if (n != -1) 1370 screen_write_cursorleft(sctx, n); 1371 break; 1372 case INPUT_CSI_CUD: 1373 n = input_get(ictx, 0, 1, 1); 1374 if (n != -1) 1375 screen_write_cursordown(sctx, n); 1376 break; 1377 case INPUT_CSI_CUF: 1378 n = input_get(ictx, 0, 1, 1); 1379 if (n != -1) 1380 screen_write_cursorright(sctx, n); 1381 break; 1382 case INPUT_CSI_CUP: 1383 n = input_get(ictx, 0, 1, 1); 1384 m = input_get(ictx, 1, 1, 1); 1385 if (n != -1 && m != -1) 1386 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1387 break; 1388 case INPUT_CSI_MODSET: 1389 n = input_get(ictx, 0, 0, 0); 1390 m = input_get(ictx, 1, 0, 0); 1391 if (n == 0 || (n == 4 && m == 0)) 1392 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1393 else if (n == 4 && (m == 1 || m == 2)) 1394 screen_write_mode_set(sctx, MODE_KEXTENDED); 1395 break; 1396 case INPUT_CSI_MODOFF: 1397 n = input_get(ictx, 0, 0, 0); 1398 if (n == 4) 1399 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1400 break; 1401 case INPUT_CSI_WINOPS: 1402 input_csi_dispatch_winops(ictx); 1403 break; 1404 case INPUT_CSI_CUU: 1405 n = input_get(ictx, 0, 1, 1); 1406 if (n != -1) 1407 screen_write_cursorup(sctx, n); 1408 break; 1409 case INPUT_CSI_CNL: 1410 n = input_get(ictx, 0, 1, 1); 1411 if (n != -1) { 1412 screen_write_carriagereturn(sctx); 1413 screen_write_cursordown(sctx, n); 1414 } 1415 break; 1416 case INPUT_CSI_CPL: 1417 n = input_get(ictx, 0, 1, 1); 1418 if (n != -1) { 1419 screen_write_carriagereturn(sctx); 1420 screen_write_cursorup(sctx, n); 1421 } 1422 break; 1423 case INPUT_CSI_DA: 1424 switch (input_get(ictx, 0, 0, 0)) { 1425 case -1: 1426 break; 1427 case 0: 1428 input_reply(ictx, "\033[?1;2c"); 1429 break; 1430 default: 1431 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1432 break; 1433 } 1434 break; 1435 case INPUT_CSI_DA_TWO: 1436 switch (input_get(ictx, 0, 0, 0)) { 1437 case -1: 1438 break; 1439 case 0: 1440 input_reply(ictx, "\033[>84;0;0c"); 1441 break; 1442 default: 1443 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1444 break; 1445 } 1446 break; 1447 case INPUT_CSI_ECH: 1448 n = input_get(ictx, 0, 1, 1); 1449 if (n != -1) 1450 screen_write_clearcharacter(sctx, n, bg); 1451 break; 1452 case INPUT_CSI_DCH: 1453 n = input_get(ictx, 0, 1, 1); 1454 if (n != -1) 1455 screen_write_deletecharacter(sctx, n, bg); 1456 break; 1457 case INPUT_CSI_DECSTBM: 1458 n = input_get(ictx, 0, 1, 1); 1459 m = input_get(ictx, 1, 1, screen_size_y(s)); 1460 if (n != -1 && m != -1) 1461 screen_write_scrollregion(sctx, n - 1, m - 1); 1462 break; 1463 case INPUT_CSI_DL: 1464 n = input_get(ictx, 0, 1, 1); 1465 if (n != -1) 1466 screen_write_deleteline(sctx, n, bg); 1467 break; 1468 case INPUT_CSI_DSR: 1469 switch (input_get(ictx, 0, 0, 0)) { 1470 case -1: 1471 break; 1472 case 5: 1473 input_reply(ictx, "\033[0n"); 1474 break; 1475 case 6: 1476 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1477 break; 1478 default: 1479 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1480 break; 1481 } 1482 break; 1483 case INPUT_CSI_ED: 1484 switch (input_get(ictx, 0, 0, 0)) { 1485 case -1: 1486 break; 1487 case 0: 1488 screen_write_clearendofscreen(sctx, bg); 1489 break; 1490 case 1: 1491 screen_write_clearstartofscreen(sctx, bg); 1492 break; 1493 case 2: 1494 screen_write_clearscreen(sctx, bg); 1495 break; 1496 case 3: 1497 if (input_get(ictx, 1, 0, 0) == 0) { 1498 /* 1499 * Linux console extension to clear history 1500 * (for example before locking the screen). 1501 */ 1502 screen_write_clearhistory(sctx); 1503 } 1504 break; 1505 default: 1506 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1507 break; 1508 } 1509 break; 1510 case INPUT_CSI_EL: 1511 switch (input_get(ictx, 0, 0, 0)) { 1512 case -1: 1513 break; 1514 case 0: 1515 screen_write_clearendofline(sctx, bg); 1516 break; 1517 case 1: 1518 screen_write_clearstartofline(sctx, bg); 1519 break; 1520 case 2: 1521 screen_write_clearline(sctx, bg); 1522 break; 1523 default: 1524 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1525 break; 1526 } 1527 break; 1528 case INPUT_CSI_HPA: 1529 n = input_get(ictx, 0, 1, 1); 1530 if (n != -1) 1531 screen_write_cursormove(sctx, n - 1, -1, 1); 1532 break; 1533 case INPUT_CSI_ICH: 1534 n = input_get(ictx, 0, 1, 1); 1535 if (n != -1) 1536 screen_write_insertcharacter(sctx, n, bg); 1537 break; 1538 case INPUT_CSI_IL: 1539 n = input_get(ictx, 0, 1, 1); 1540 if (n != -1) 1541 screen_write_insertline(sctx, n, bg); 1542 break; 1543 case INPUT_CSI_REP: 1544 n = input_get(ictx, 0, 1, 1); 1545 if (n == -1) 1546 break; 1547 1548 m = screen_size_x(s) - s->cx; 1549 if (n > m) 1550 n = m; 1551 1552 if (ictx->last == -1) 1553 break; 1554 ictx->ch = ictx->last; 1555 1556 for (i = 0; i < n; i++) 1557 input_print(ictx); 1558 break; 1559 case INPUT_CSI_RCP: 1560 input_restore_state(ictx); 1561 break; 1562 case INPUT_CSI_RM: 1563 input_csi_dispatch_rm(ictx); 1564 break; 1565 case INPUT_CSI_RM_PRIVATE: 1566 input_csi_dispatch_rm_private(ictx); 1567 break; 1568 case INPUT_CSI_SCP: 1569 input_save_state(ictx); 1570 break; 1571 case INPUT_CSI_SGR: 1572 input_csi_dispatch_sgr(ictx); 1573 break; 1574 case INPUT_CSI_SM: 1575 input_csi_dispatch_sm(ictx); 1576 break; 1577 case INPUT_CSI_SM_PRIVATE: 1578 input_csi_dispatch_sm_private(ictx); 1579 break; 1580 case INPUT_CSI_SU: 1581 n = input_get(ictx, 0, 1, 1); 1582 if (n != -1) 1583 screen_write_scrollup(sctx, n, bg); 1584 break; 1585 case INPUT_CSI_SD: 1586 n = input_get(ictx, 0, 1, 1); 1587 if (n != -1) 1588 screen_write_scrolldown(sctx, n, bg); 1589 break; 1590 case INPUT_CSI_TBC: 1591 switch (input_get(ictx, 0, 0, 0)) { 1592 case -1: 1593 break; 1594 case 0: 1595 if (s->cx < screen_size_x(s)) 1596 bit_clear(s->tabs, s->cx); 1597 break; 1598 case 3: 1599 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1600 break; 1601 default: 1602 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1603 break; 1604 } 1605 break; 1606 case INPUT_CSI_VPA: 1607 n = input_get(ictx, 0, 1, 1); 1608 if (n != -1) 1609 screen_write_cursormove(sctx, -1, n - 1, 1); 1610 break; 1611 case INPUT_CSI_DECSCUSR: 1612 n = input_get(ictx, 0, 0, 0); 1613 if (n != -1) 1614 screen_set_cursor_style(s, n); 1615 break; 1616 case INPUT_CSI_XDA: 1617 n = input_get(ictx, 0, 0, 0); 1618 if (n == 0) 1619 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1620 break; 1621 1622 } 1623 1624 ictx->last = -1; 1625 return (0); 1626 } 1627 1628 /* Handle CSI RM. */ 1629 static void 1630 input_csi_dispatch_rm(struct input_ctx *ictx) 1631 { 1632 struct screen_write_ctx *sctx = &ictx->ctx; 1633 u_int i; 1634 1635 for (i = 0; i < ictx->param_list_len; i++) { 1636 switch (input_get(ictx, i, 0, -1)) { 1637 case -1: 1638 break; 1639 case 4: /* IRM */ 1640 screen_write_mode_clear(sctx, MODE_INSERT); 1641 break; 1642 case 34: 1643 screen_write_mode_set(sctx, MODE_BLINKING); 1644 break; 1645 default: 1646 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1647 break; 1648 } 1649 } 1650 } 1651 1652 /* Handle CSI private RM. */ 1653 static void 1654 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1655 { 1656 struct screen_write_ctx *sctx = &ictx->ctx; 1657 struct grid_cell *gc = &ictx->cell.cell; 1658 u_int i; 1659 1660 for (i = 0; i < ictx->param_list_len; i++) { 1661 switch (input_get(ictx, i, 0, -1)) { 1662 case -1: 1663 break; 1664 case 1: /* DECCKM */ 1665 screen_write_mode_clear(sctx, MODE_KCURSOR); 1666 break; 1667 case 3: /* DECCOLM */ 1668 screen_write_cursormove(sctx, 0, 0, 1); 1669 screen_write_clearscreen(sctx, gc->bg); 1670 break; 1671 case 6: /* DECOM */ 1672 screen_write_mode_clear(sctx, MODE_ORIGIN); 1673 screen_write_cursormove(sctx, 0, 0, 1); 1674 break; 1675 case 7: /* DECAWM */ 1676 screen_write_mode_clear(sctx, MODE_WRAP); 1677 break; 1678 case 12: 1679 screen_write_mode_clear(sctx, MODE_BLINKING); 1680 break; 1681 case 25: /* TCEM */ 1682 screen_write_mode_clear(sctx, MODE_CURSOR); 1683 break; 1684 case 1000: 1685 case 1001: 1686 case 1002: 1687 case 1003: 1688 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1689 break; 1690 case 1004: 1691 screen_write_mode_clear(sctx, MODE_FOCUSON); 1692 break; 1693 case 1005: 1694 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1695 break; 1696 case 1006: 1697 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1698 break; 1699 case 47: 1700 case 1047: 1701 screen_write_alternateoff(sctx, gc, 0); 1702 break; 1703 case 1049: 1704 screen_write_alternateoff(sctx, gc, 1); 1705 break; 1706 case 2004: 1707 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1708 break; 1709 default: 1710 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1711 break; 1712 } 1713 } 1714 } 1715 1716 /* Handle CSI SM. */ 1717 static void 1718 input_csi_dispatch_sm(struct input_ctx *ictx) 1719 { 1720 struct screen_write_ctx *sctx = &ictx->ctx; 1721 u_int i; 1722 1723 for (i = 0; i < ictx->param_list_len; i++) { 1724 switch (input_get(ictx, i, 0, -1)) { 1725 case -1: 1726 break; 1727 case 4: /* IRM */ 1728 screen_write_mode_set(sctx, MODE_INSERT); 1729 break; 1730 case 34: 1731 screen_write_mode_clear(sctx, MODE_BLINKING); 1732 break; 1733 default: 1734 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1735 break; 1736 } 1737 } 1738 } 1739 1740 /* Handle CSI private SM. */ 1741 static void 1742 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1743 { 1744 struct screen_write_ctx *sctx = &ictx->ctx; 1745 struct window_pane *wp = ictx->wp; 1746 struct grid_cell *gc = &ictx->cell.cell; 1747 u_int i; 1748 1749 for (i = 0; i < ictx->param_list_len; i++) { 1750 switch (input_get(ictx, i, 0, -1)) { 1751 case -1: 1752 break; 1753 case 1: /* DECCKM */ 1754 screen_write_mode_set(sctx, MODE_KCURSOR); 1755 break; 1756 case 3: /* DECCOLM */ 1757 screen_write_cursormove(sctx, 0, 0, 1); 1758 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1759 break; 1760 case 6: /* DECOM */ 1761 screen_write_mode_set(sctx, MODE_ORIGIN); 1762 screen_write_cursormove(sctx, 0, 0, 1); 1763 break; 1764 case 7: /* DECAWM */ 1765 screen_write_mode_set(sctx, MODE_WRAP); 1766 break; 1767 case 12: 1768 screen_write_mode_set(sctx, MODE_BLINKING); 1769 break; 1770 case 25: /* TCEM */ 1771 screen_write_mode_set(sctx, MODE_CURSOR); 1772 break; 1773 case 1000: 1774 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1775 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1776 break; 1777 case 1002: 1778 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1779 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1780 break; 1781 case 1003: 1782 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1783 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1784 break; 1785 case 1004: 1786 if (sctx->s->mode & MODE_FOCUSON) 1787 break; 1788 screen_write_mode_set(sctx, MODE_FOCUSON); 1789 if (wp != NULL) 1790 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1791 break; 1792 case 1005: 1793 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1794 break; 1795 case 1006: 1796 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1797 break; 1798 case 47: 1799 case 1047: 1800 screen_write_alternateon(sctx, gc, 0); 1801 break; 1802 case 1049: 1803 screen_write_alternateon(sctx, gc, 1); 1804 break; 1805 case 2004: 1806 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1807 break; 1808 default: 1809 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1810 break; 1811 } 1812 } 1813 } 1814 1815 /* Handle CSI window operations. */ 1816 static void 1817 input_csi_dispatch_winops(struct input_ctx *ictx) 1818 { 1819 struct screen_write_ctx *sctx = &ictx->ctx; 1820 struct screen *s = sctx->s; 1821 struct window_pane *wp = ictx->wp; 1822 u_int x = screen_size_x(s), y = screen_size_y(s); 1823 int n, m; 1824 1825 m = 0; 1826 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1827 switch (n) { 1828 case 1: 1829 case 2: 1830 case 5: 1831 case 6: 1832 case 7: 1833 case 11: 1834 case 13: 1835 case 14: 1836 case 19: 1837 case 20: 1838 case 21: 1839 case 24: 1840 break; 1841 case 3: 1842 case 4: 1843 case 8: 1844 m++; 1845 if (input_get(ictx, m, 0, -1) == -1) 1846 return; 1847 /* FALLTHROUGH */ 1848 case 9: 1849 case 10: 1850 m++; 1851 if (input_get(ictx, m, 0, -1) == -1) 1852 return; 1853 break; 1854 case 22: 1855 m++; 1856 switch (input_get(ictx, m, 0, -1)) { 1857 case -1: 1858 return; 1859 case 0: 1860 case 2: 1861 screen_push_title(sctx->s); 1862 break; 1863 } 1864 break; 1865 case 23: 1866 m++; 1867 switch (input_get(ictx, m, 0, -1)) { 1868 case -1: 1869 return; 1870 case 0: 1871 case 2: 1872 screen_pop_title(sctx->s); 1873 if (wp != NULL) { 1874 notify_pane("pane-title-changed", wp); 1875 server_redraw_window_borders(wp->window); 1876 server_status_window(wp->window); 1877 } 1878 break; 1879 } 1880 break; 1881 case 18: 1882 input_reply(ictx, "\033[8;%u;%ut", x, y); 1883 break; 1884 default: 1885 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1886 break; 1887 } 1888 m++; 1889 } 1890 } 1891 1892 /* Helper for 256 colour SGR. */ 1893 static int 1894 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1895 { 1896 struct grid_cell *gc = &ictx->cell.cell; 1897 1898 if (c == -1 || c > 255) { 1899 if (fgbg == 38) 1900 gc->fg = 8; 1901 else if (fgbg == 48) 1902 gc->bg = 8; 1903 } else { 1904 if (fgbg == 38) 1905 gc->fg = c | COLOUR_FLAG_256; 1906 else if (fgbg == 48) 1907 gc->bg = c | COLOUR_FLAG_256; 1908 else if (fgbg == 58) 1909 gc->us = c | COLOUR_FLAG_256; 1910 } 1911 return (1); 1912 } 1913 1914 /* Handle CSI SGR for 256 colours. */ 1915 static void 1916 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1917 { 1918 int c; 1919 1920 c = input_get(ictx, (*i) + 1, 0, -1); 1921 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1922 (*i)++; 1923 } 1924 1925 /* Helper for RGB colour SGR. */ 1926 static int 1927 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1928 int b) 1929 { 1930 struct grid_cell *gc = &ictx->cell.cell; 1931 1932 if (r == -1 || r > 255) 1933 return (0); 1934 if (g == -1 || g > 255) 1935 return (0); 1936 if (b == -1 || b > 255) 1937 return (0); 1938 1939 if (fgbg == 38) 1940 gc->fg = colour_join_rgb(r, g, b); 1941 else if (fgbg == 48) 1942 gc->bg = colour_join_rgb(r, g, b); 1943 else if (fgbg == 58) 1944 gc->us = colour_join_rgb(r, g, b); 1945 return (1); 1946 } 1947 1948 /* Handle CSI SGR for RGB colours. */ 1949 static void 1950 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1951 { 1952 int r, g, b; 1953 1954 r = input_get(ictx, (*i) + 1, 0, -1); 1955 g = input_get(ictx, (*i) + 2, 0, -1); 1956 b = input_get(ictx, (*i) + 3, 0, -1); 1957 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1958 (*i) += 3; 1959 } 1960 1961 /* Handle CSI SGR with a ISO parameter. */ 1962 static void 1963 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1964 { 1965 struct grid_cell *gc = &ictx->cell.cell; 1966 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1967 int p[8]; 1968 u_int n; 1969 const char *errstr; 1970 1971 for (n = 0; n < nitems(p); n++) 1972 p[n] = -1; 1973 n = 0; 1974 1975 ptr = copy = xstrdup(s); 1976 while ((out = strsep(&ptr, ":")) != NULL) { 1977 if (*out != '\0') { 1978 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1979 if (errstr != NULL || n == nitems(p)) { 1980 free(copy); 1981 return; 1982 } 1983 } else { 1984 n++; 1985 if (n == nitems(p)) { 1986 free(copy); 1987 return; 1988 } 1989 } 1990 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1991 } 1992 free(copy); 1993 1994 if (n == 0) 1995 return; 1996 if (p[0] == 4) { 1997 if (n != 2) 1998 return; 1999 switch (p[1]) { 2000 case 0: 2001 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2002 break; 2003 case 1: 2004 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2005 gc->attr |= GRID_ATTR_UNDERSCORE; 2006 break; 2007 case 2: 2008 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2009 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2010 break; 2011 case 3: 2012 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2013 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2014 break; 2015 case 4: 2016 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2017 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2018 break; 2019 case 5: 2020 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2021 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2022 break; 2023 } 2024 return; 2025 } 2026 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2027 return; 2028 switch (p[1]) { 2029 case 2: 2030 if (n < 3) 2031 break; 2032 if (n == 5) 2033 i = 2; 2034 else 2035 i = 3; 2036 if (n < i + 3) 2037 break; 2038 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2039 p[i + 2]); 2040 break; 2041 case 5: 2042 if (n < 3) 2043 break; 2044 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2045 break; 2046 } 2047 } 2048 2049 /* Handle CSI SGR. */ 2050 static void 2051 input_csi_dispatch_sgr(struct input_ctx *ictx) 2052 { 2053 struct grid_cell *gc = &ictx->cell.cell; 2054 u_int i; 2055 int n; 2056 2057 if (ictx->param_list_len == 0) { 2058 memcpy(gc, &grid_default_cell, sizeof *gc); 2059 return; 2060 } 2061 2062 for (i = 0; i < ictx->param_list_len; i++) { 2063 if (ictx->param_list[i].type == INPUT_STRING) { 2064 input_csi_dispatch_sgr_colon(ictx, i); 2065 continue; 2066 } 2067 n = input_get(ictx, i, 0, 0); 2068 if (n == -1) 2069 continue; 2070 2071 if (n == 38 || n == 48 || n == 58) { 2072 i++; 2073 switch (input_get(ictx, i, 0, -1)) { 2074 case 2: 2075 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2076 break; 2077 case 5: 2078 input_csi_dispatch_sgr_256(ictx, n, &i); 2079 break; 2080 } 2081 continue; 2082 } 2083 2084 switch (n) { 2085 case 0: 2086 memcpy(gc, &grid_default_cell, sizeof *gc); 2087 break; 2088 case 1: 2089 gc->attr |= GRID_ATTR_BRIGHT; 2090 break; 2091 case 2: 2092 gc->attr |= GRID_ATTR_DIM; 2093 break; 2094 case 3: 2095 gc->attr |= GRID_ATTR_ITALICS; 2096 break; 2097 case 4: 2098 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2099 gc->attr |= GRID_ATTR_UNDERSCORE; 2100 break; 2101 case 5: 2102 gc->attr |= GRID_ATTR_BLINK; 2103 break; 2104 case 7: 2105 gc->attr |= GRID_ATTR_REVERSE; 2106 break; 2107 case 8: 2108 gc->attr |= GRID_ATTR_HIDDEN; 2109 break; 2110 case 9: 2111 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2112 break; 2113 case 22: 2114 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2115 break; 2116 case 23: 2117 gc->attr &= ~GRID_ATTR_ITALICS; 2118 break; 2119 case 24: 2120 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2121 break; 2122 case 25: 2123 gc->attr &= ~GRID_ATTR_BLINK; 2124 break; 2125 case 27: 2126 gc->attr &= ~GRID_ATTR_REVERSE; 2127 break; 2128 case 28: 2129 gc->attr &= ~GRID_ATTR_HIDDEN; 2130 break; 2131 case 29: 2132 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2133 break; 2134 case 30: 2135 case 31: 2136 case 32: 2137 case 33: 2138 case 34: 2139 case 35: 2140 case 36: 2141 case 37: 2142 gc->fg = n - 30; 2143 break; 2144 case 39: 2145 gc->fg = 8; 2146 break; 2147 case 40: 2148 case 41: 2149 case 42: 2150 case 43: 2151 case 44: 2152 case 45: 2153 case 46: 2154 case 47: 2155 gc->bg = n - 40; 2156 break; 2157 case 49: 2158 gc->bg = 8; 2159 break; 2160 case 53: 2161 gc->attr |= GRID_ATTR_OVERLINE; 2162 break; 2163 case 55: 2164 gc->attr &= ~GRID_ATTR_OVERLINE; 2165 break; 2166 case 59: 2167 gc->us = 0; 2168 break; 2169 case 90: 2170 case 91: 2171 case 92: 2172 case 93: 2173 case 94: 2174 case 95: 2175 case 96: 2176 case 97: 2177 gc->fg = n; 2178 break; 2179 case 100: 2180 case 101: 2181 case 102: 2182 case 103: 2183 case 104: 2184 case 105: 2185 case 106: 2186 case 107: 2187 gc->bg = n - 10; 2188 break; 2189 } 2190 } 2191 } 2192 2193 /* End of input with BEL. */ 2194 static int 2195 input_end_bel(struct input_ctx *ictx) 2196 { 2197 log_debug("%s", __func__); 2198 2199 ictx->input_end = INPUT_END_BEL; 2200 2201 return (0); 2202 } 2203 2204 /* DCS string started. */ 2205 static void 2206 input_enter_dcs(struct input_ctx *ictx) 2207 { 2208 log_debug("%s", __func__); 2209 2210 input_clear(ictx); 2211 input_start_timer(ictx); 2212 ictx->last = -1; 2213 } 2214 2215 /* DCS terminator (ST) received. */ 2216 static int 2217 input_dcs_dispatch(struct input_ctx *ictx) 2218 { 2219 struct screen_write_ctx *sctx = &ictx->ctx; 2220 u_char *buf = ictx->input_buf; 2221 size_t len = ictx->input_len; 2222 const char prefix[] = "tmux;"; 2223 const u_int prefixlen = (sizeof prefix) - 1; 2224 2225 if (ictx->flags & INPUT_DISCARD) 2226 return (0); 2227 2228 log_debug("%s: \"%s\"", __func__, buf); 2229 2230 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2231 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2232 2233 return (0); 2234 } 2235 2236 /* OSC string started. */ 2237 static void 2238 input_enter_osc(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 /* OSC terminator (ST) received. */ 2248 static void 2249 input_exit_osc(struct input_ctx *ictx) 2250 { 2251 struct screen_write_ctx *sctx = &ictx->ctx; 2252 struct window_pane *wp = ictx->wp; 2253 u_char *p = ictx->input_buf; 2254 u_int option; 2255 2256 if (ictx->flags & INPUT_DISCARD) 2257 return; 2258 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2259 return; 2260 2261 log_debug("%s: \"%s\" (end %s)", __func__, p, 2262 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2263 2264 option = 0; 2265 while (*p >= '0' && *p <= '9') 2266 option = option * 10 + *p++ - '0'; 2267 if (*p == ';') 2268 p++; 2269 2270 switch (option) { 2271 case 0: 2272 case 2: 2273 if (screen_set_title(sctx->s, p) && wp != NULL) { 2274 notify_pane("pane-title-changed", wp); 2275 server_redraw_window_borders(wp->window); 2276 server_status_window(wp->window); 2277 } 2278 break; 2279 case 4: 2280 input_osc_4(ictx, p); 2281 break; 2282 case 7: 2283 if (utf8_isvalid(p)) { 2284 screen_set_path(sctx->s, p); 2285 if (wp != NULL) { 2286 server_redraw_window_borders(wp->window); 2287 server_status_window(wp->window); 2288 } 2289 } 2290 break; 2291 case 10: 2292 input_osc_10(ictx, p); 2293 break; 2294 case 11: 2295 input_osc_11(ictx, p); 2296 break; 2297 case 12: 2298 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2299 screen_set_cursor_colour(sctx->s, p); 2300 break; 2301 case 52: 2302 input_osc_52(ictx, p); 2303 break; 2304 case 104: 2305 input_osc_104(ictx, p); 2306 break; 2307 case 112: 2308 if (*p == '\0') /* no arguments allowed */ 2309 screen_set_cursor_colour(sctx->s, ""); 2310 break; 2311 default: 2312 log_debug("%s: unknown '%u'", __func__, option); 2313 break; 2314 } 2315 } 2316 2317 /* APC string started. */ 2318 static void 2319 input_enter_apc(struct input_ctx *ictx) 2320 { 2321 log_debug("%s", __func__); 2322 2323 input_clear(ictx); 2324 input_start_timer(ictx); 2325 ictx->last = -1; 2326 } 2327 2328 /* APC terminator (ST) received. */ 2329 static void 2330 input_exit_apc(struct input_ctx *ictx) 2331 { 2332 struct screen_write_ctx *sctx = &ictx->ctx; 2333 struct window_pane *wp = ictx->wp; 2334 2335 if (ictx->flags & INPUT_DISCARD) 2336 return; 2337 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2338 2339 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2340 notify_pane("pane-title-changed", wp); 2341 server_redraw_window_borders(wp->window); 2342 server_status_window(wp->window); 2343 } 2344 } 2345 2346 /* Rename string started. */ 2347 static void 2348 input_enter_rename(struct input_ctx *ictx) 2349 { 2350 log_debug("%s", __func__); 2351 2352 input_clear(ictx); 2353 input_start_timer(ictx); 2354 ictx->last = -1; 2355 } 2356 2357 /* Rename terminator (ST) received. */ 2358 static void 2359 input_exit_rename(struct input_ctx *ictx) 2360 { 2361 struct window_pane *wp = ictx->wp; 2362 struct options_entry *o; 2363 2364 if (wp == NULL) 2365 return; 2366 if (ictx->flags & INPUT_DISCARD) 2367 return; 2368 if (!options_get_number(ictx->wp->options, "allow-rename")) 2369 return; 2370 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2371 2372 if (!utf8_isvalid(ictx->input_buf)) 2373 return; 2374 2375 if (ictx->input_len == 0) { 2376 o = options_get_only(wp->window->options, "automatic-rename"); 2377 if (o != NULL) 2378 options_remove_or_default(o, -1, NULL); 2379 return; 2380 } 2381 window_set_name(wp->window, ictx->input_buf); 2382 options_set_number(wp->window->options, "automatic-rename", 0); 2383 server_redraw_window_borders(wp->window); 2384 server_status_window(wp->window); 2385 } 2386 2387 /* Open UTF-8 character. */ 2388 static int 2389 input_top_bit_set(struct input_ctx *ictx) 2390 { 2391 struct screen_write_ctx *sctx = &ictx->ctx; 2392 struct utf8_data *ud = &ictx->utf8data; 2393 2394 ictx->last = -1; 2395 2396 if (!ictx->utf8started) { 2397 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2398 return (0); 2399 ictx->utf8started = 1; 2400 return (0); 2401 } 2402 2403 switch (utf8_append(ud, ictx->ch)) { 2404 case UTF8_MORE: 2405 return (0); 2406 case UTF8_ERROR: 2407 ictx->utf8started = 0; 2408 return (0); 2409 case UTF8_DONE: 2410 break; 2411 } 2412 ictx->utf8started = 0; 2413 2414 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2415 (int)ud->size, ud->data, ud->width); 2416 2417 utf8_copy(&ictx->cell.cell.data, ud); 2418 screen_write_collect_add(sctx, &ictx->cell.cell); 2419 2420 return (0); 2421 } 2422 2423 /* Parse colour from OSC. */ 2424 static int 2425 input_osc_parse_colour(const char *p, u_int *r, u_int *g, u_int *b) 2426 { 2427 u_int rsize, gsize, bsize; 2428 const char *cp, *s = p; 2429 2430 if (sscanf(p, "rgb:%x/%x/%x", r, g, b) != 3) 2431 return (0); 2432 p += 4; 2433 2434 cp = strchr(p, '/'); 2435 rsize = cp - p; 2436 if (rsize == 1) 2437 (*r) = (*r) | ((*r) << 4); 2438 else if (rsize == 3) 2439 (*r) >>= 4; 2440 else if (rsize == 4) 2441 (*r) >>= 8; 2442 else if (rsize != 2) 2443 return (0); 2444 2445 p = cp + 1; 2446 cp = strchr(p, '/'); 2447 gsize = cp - p; 2448 if (gsize == 1) 2449 (*g) = (*g) | ((*g) << 4); 2450 else if (gsize == 3) 2451 (*g) >>= 4; 2452 else if (gsize == 4) 2453 (*g) >>= 8; 2454 else if (gsize != 2) 2455 return (0); 2456 2457 bsize = strlen(cp + 1); 2458 if (bsize == 1) 2459 (*b) = (*b) | ((*b) << 4); 2460 else if (bsize == 3) 2461 (*b) >>= 4; 2462 else if (bsize == 4) 2463 (*b) >>= 8; 2464 else if (bsize != 2) 2465 return (0); 2466 2467 log_debug("%s: %s = %02x%02x%02x", __func__, s, *r, *g, *b); 2468 return (1); 2469 } 2470 2471 /* Reply to a colour request. */ 2472 static void 2473 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2474 { 2475 u_char r, g, b; 2476 const char *end; 2477 2478 if (c == 8 || (~c & COLOUR_FLAG_RGB)) 2479 return; 2480 colour_split_rgb(c, &r, &g, &b); 2481 2482 if (ictx->input_end == INPUT_END_BEL) 2483 end = "\007"; 2484 else 2485 end = "\033\\"; 2486 input_reply(ictx, "\033]%u;rgb:%02hhx/%02hhx/%02hhx%s", n, r, g, b, end); 2487 } 2488 2489 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2490 static void 2491 input_osc_4(struct input_ctx *ictx, const char *p) 2492 { 2493 struct window_pane *wp = ictx->wp; 2494 char *copy, *s, *next = NULL; 2495 long idx; 2496 u_int r, g, b; 2497 2498 if (wp == NULL) 2499 return; 2500 2501 copy = s = xstrdup(p); 2502 while (s != NULL && *s != '\0') { 2503 idx = strtol(s, &next, 10); 2504 if (*next++ != ';') 2505 goto bad; 2506 if (idx < 0 || idx >= 0x100) 2507 goto bad; 2508 2509 s = strsep(&next, ";"); 2510 if (!input_osc_parse_colour(s, &r, &g, &b)) { 2511 s = next; 2512 continue; 2513 } 2514 2515 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2516 s = next; 2517 } 2518 2519 free(copy); 2520 return; 2521 2522 bad: 2523 log_debug("bad OSC 4: %s", p); 2524 free(copy); 2525 } 2526 2527 /* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2528 static void 2529 input_osc_10(struct input_ctx *ictx, const char *p) 2530 { 2531 struct window_pane *wp = ictx->wp; 2532 struct grid_cell defaults; 2533 u_int r, g, b; 2534 2535 if (wp == NULL) 2536 return; 2537 2538 if (strcmp(p, "?") == 0) { 2539 tty_default_colours(&defaults, wp); 2540 input_osc_colour_reply(ictx, 10, defaults.fg); 2541 return; 2542 } 2543 2544 if (!input_osc_parse_colour(p, &r, &g, &b)) 2545 goto bad; 2546 wp->fg = colour_join_rgb(r, g, b); 2547 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2548 2549 return; 2550 2551 bad: 2552 log_debug("bad OSC 10: %s", p); 2553 } 2554 2555 /* Handle the OSC 11 sequence for setting and querying background colour. */ 2556 static void 2557 input_osc_11(struct input_ctx *ictx, const char *p) 2558 { 2559 struct window_pane *wp = ictx->wp; 2560 struct grid_cell defaults; 2561 u_int r, g, b; 2562 2563 if (wp == NULL) 2564 return; 2565 2566 if (strcmp(p, "?") == 0) { 2567 tty_default_colours(&defaults, wp); 2568 input_osc_colour_reply(ictx, 11, defaults.bg); 2569 return; 2570 } 2571 2572 if (!input_osc_parse_colour(p, &r, &g, &b)) 2573 goto bad; 2574 wp->bg = colour_join_rgb(r, g, b); 2575 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED); 2576 2577 return; 2578 2579 bad: 2580 log_debug("bad OSC 11: %s", p); 2581 } 2582 2583 /* Handle the OSC 52 sequence for setting the clipboard. */ 2584 static void 2585 input_osc_52(struct input_ctx *ictx, const char *p) 2586 { 2587 struct window_pane *wp = ictx->wp; 2588 char *end; 2589 const char *buf; 2590 size_t len; 2591 u_char *out; 2592 int outlen, state; 2593 struct screen_write_ctx ctx; 2594 struct paste_buffer *pb; 2595 2596 if (wp == NULL) 2597 return; 2598 state = options_get_number(global_options, "set-clipboard"); 2599 if (state != 2) 2600 return; 2601 2602 if ((end = strchr(p, ';')) == NULL) 2603 return; 2604 end++; 2605 if (*end == '\0') 2606 return; 2607 log_debug("%s: %s", __func__, end); 2608 2609 if (strcmp(end, "?") == 0) { 2610 if ((pb = paste_get_top(NULL)) != NULL) { 2611 buf = paste_buffer_data(pb, &len); 2612 outlen = 4 * ((len + 2) / 3) + 1; 2613 out = xmalloc(outlen); 2614 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2615 free(out); 2616 return; 2617 } 2618 } else { 2619 outlen = 0; 2620 out = NULL; 2621 } 2622 bufferevent_write(ictx->event, "\033]52;;", 6); 2623 if (outlen != 0) 2624 bufferevent_write(ictx->event, out, outlen); 2625 if (ictx->input_end == INPUT_END_BEL) 2626 bufferevent_write(ictx->event, "\007", 1); 2627 else 2628 bufferevent_write(ictx->event, "\033\\", 2); 2629 free(out); 2630 return; 2631 } 2632 2633 len = (strlen(end) / 4) * 3; 2634 if (len == 0) 2635 return; 2636 2637 out = xmalloc(len); 2638 if ((outlen = b64_pton(end, out, len)) == -1) { 2639 free(out); 2640 return; 2641 } 2642 2643 screen_write_start_pane(&ctx, wp, NULL); 2644 screen_write_setselection(&ctx, out, outlen); 2645 screen_write_stop(&ctx); 2646 notify_pane("pane-set-clipboard", wp); 2647 2648 paste_add(NULL, out, outlen); 2649 } 2650 2651 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2652 static void 2653 input_osc_104(struct input_ctx *ictx, const char *p) 2654 { 2655 struct window_pane *wp = ictx->wp; 2656 char *copy, *s; 2657 long idx; 2658 2659 if (wp == NULL) 2660 return; 2661 2662 if (*p == '\0') { 2663 window_pane_reset_palette(wp); 2664 return; 2665 } 2666 2667 copy = s = xstrdup(p); 2668 while (*s != '\0') { 2669 idx = strtol(s, &s, 10); 2670 if (*s != '\0' && *s != ';') 2671 goto bad; 2672 if (idx < 0 || idx >= 0x100) 2673 goto bad; 2674 2675 window_pane_unset_palette(wp, idx); 2676 if (*s == ';') 2677 s++; 2678 } 2679 free(copy); 2680 return; 2681 2682 bad: 2683 log_debug("bad OSC 104: %s", p); 2684 free(copy); 2685 } 2686