1 /* $OpenBSD$ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <netinet/in.h> 22 23 #include <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 struct colour_palette *palette; 81 82 struct input_cell cell; 83 84 struct input_cell old_cell; 85 u_int old_cx; 86 u_int old_cy; 87 int old_mode; 88 89 u_char interm_buf[4]; 90 size_t interm_len; 91 92 u_char param_buf[64]; 93 size_t param_len; 94 95 #define INPUT_BUF_START 32 96 #define INPUT_BUF_LIMIT 1048576 97 u_char *input_buf; 98 size_t input_len; 99 size_t input_space; 100 enum { 101 INPUT_END_ST, 102 INPUT_END_BEL 103 } input_end; 104 105 struct input_param param_list[24]; 106 u_int param_list_len; 107 108 struct utf8_data utf8data; 109 int utf8started; 110 111 int ch; 112 struct utf8_data last; 113 114 int flags; 115 #define INPUT_DISCARD 0x1 116 #define INPUT_LAST 0x2 117 118 const struct input_state *state; 119 120 struct event timer; 121 122 /* 123 * All input received since we were last in the ground state. Sent to 124 * control clients on connection. 125 */ 126 struct evbuffer *since_ground; 127 }; 128 129 /* Helper functions. */ 130 struct input_transition; 131 static int input_split(struct input_ctx *); 132 static int input_get(struct input_ctx *, u_int, int, int); 133 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 134 static void input_set_state(struct input_ctx *, 135 const struct input_transition *); 136 static void input_reset_cell(struct input_ctx *); 137 138 static void input_osc_4(struct input_ctx *, const char *); 139 static void input_osc_8(struct input_ctx *, const char *); 140 static void input_osc_10(struct input_ctx *, const char *); 141 static void input_osc_11(struct input_ctx *, const char *); 142 static void input_osc_12(struct input_ctx *, const char *); 143 static void input_osc_52(struct input_ctx *, const char *); 144 static void input_osc_104(struct input_ctx *, const char *); 145 static void input_osc_110(struct input_ctx *, const char *); 146 static void input_osc_111(struct input_ctx *, const char *); 147 static void input_osc_112(struct input_ctx *, const char *); 148 static void input_osc_133(struct input_ctx *, const char *); 149 150 /* Transition entry/exit handlers. */ 151 static void input_clear(struct input_ctx *); 152 static void input_ground(struct input_ctx *); 153 static void input_enter_dcs(struct input_ctx *); 154 static void input_enter_osc(struct input_ctx *); 155 static void input_exit_osc(struct input_ctx *); 156 static void input_enter_apc(struct input_ctx *); 157 static void input_exit_apc(struct input_ctx *); 158 static void input_enter_rename(struct input_ctx *); 159 static void input_exit_rename(struct input_ctx *); 160 161 /* Input state handlers. */ 162 static int input_print(struct input_ctx *); 163 static int input_intermediate(struct input_ctx *); 164 static int input_parameter(struct input_ctx *); 165 static int input_input(struct input_ctx *); 166 static int input_c0_dispatch(struct input_ctx *); 167 static int input_esc_dispatch(struct input_ctx *); 168 static int input_csi_dispatch(struct input_ctx *); 169 static void input_csi_dispatch_rm(struct input_ctx *); 170 static void input_csi_dispatch_rm_private(struct input_ctx *); 171 static void input_csi_dispatch_sm(struct input_ctx *); 172 static void input_csi_dispatch_sm_private(struct input_ctx *); 173 static void input_csi_dispatch_sm_graphics(struct input_ctx *); 174 static void input_csi_dispatch_winops(struct input_ctx *); 175 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 176 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 177 static void input_csi_dispatch_sgr(struct input_ctx *); 178 static int input_dcs_dispatch(struct input_ctx *); 179 static int input_top_bit_set(struct input_ctx *); 180 static int input_end_bel(struct input_ctx *); 181 182 /* Command table comparison function. */ 183 static int input_table_compare(const void *, const void *); 184 185 /* Command table entry. */ 186 struct input_table_entry { 187 int ch; 188 const char *interm; 189 int type; 190 }; 191 192 /* Escape commands. */ 193 enum input_esc_type { 194 INPUT_ESC_DECALN, 195 INPUT_ESC_DECKPAM, 196 INPUT_ESC_DECKPNM, 197 INPUT_ESC_DECRC, 198 INPUT_ESC_DECSC, 199 INPUT_ESC_HTS, 200 INPUT_ESC_IND, 201 INPUT_ESC_NEL, 202 INPUT_ESC_RI, 203 INPUT_ESC_RIS, 204 INPUT_ESC_SCSG0_OFF, 205 INPUT_ESC_SCSG0_ON, 206 INPUT_ESC_SCSG1_OFF, 207 INPUT_ESC_SCSG1_ON, 208 INPUT_ESC_ST 209 }; 210 211 /* Escape command table. */ 212 static const struct input_table_entry input_esc_table[] = { 213 { '0', "(", INPUT_ESC_SCSG0_ON }, 214 { '0', ")", INPUT_ESC_SCSG1_ON }, 215 { '7', "", INPUT_ESC_DECSC }, 216 { '8', "", INPUT_ESC_DECRC }, 217 { '8', "#", INPUT_ESC_DECALN }, 218 { '=', "", INPUT_ESC_DECKPAM }, 219 { '>', "", INPUT_ESC_DECKPNM }, 220 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 221 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 222 { 'D', "", INPUT_ESC_IND }, 223 { 'E', "", INPUT_ESC_NEL }, 224 { 'H', "", INPUT_ESC_HTS }, 225 { 'M', "", INPUT_ESC_RI }, 226 { '\\', "", INPUT_ESC_ST }, 227 { 'c', "", INPUT_ESC_RIS }, 228 }; 229 230 /* Control (CSI) commands. */ 231 enum input_csi_type { 232 INPUT_CSI_CBT, 233 INPUT_CSI_CNL, 234 INPUT_CSI_CPL, 235 INPUT_CSI_CUB, 236 INPUT_CSI_CUD, 237 INPUT_CSI_CUF, 238 INPUT_CSI_CUP, 239 INPUT_CSI_CUU, 240 INPUT_CSI_DA, 241 INPUT_CSI_DA_TWO, 242 INPUT_CSI_DCH, 243 INPUT_CSI_DECSCUSR, 244 INPUT_CSI_DECSTBM, 245 INPUT_CSI_DL, 246 INPUT_CSI_DSR, 247 INPUT_CSI_ECH, 248 INPUT_CSI_ED, 249 INPUT_CSI_EL, 250 INPUT_CSI_HPA, 251 INPUT_CSI_ICH, 252 INPUT_CSI_IL, 253 INPUT_CSI_MODOFF, 254 INPUT_CSI_MODSET, 255 INPUT_CSI_RCP, 256 INPUT_CSI_REP, 257 INPUT_CSI_RM, 258 INPUT_CSI_RM_PRIVATE, 259 INPUT_CSI_SCP, 260 INPUT_CSI_SD, 261 INPUT_CSI_SGR, 262 INPUT_CSI_SM, 263 INPUT_CSI_SM_PRIVATE, 264 INPUT_CSI_SM_GRAPHICS, 265 INPUT_CSI_SU, 266 INPUT_CSI_TBC, 267 INPUT_CSI_VPA, 268 INPUT_CSI_WINOPS, 269 INPUT_CSI_XDA 270 }; 271 272 /* Control (CSI) command table. */ 273 static const struct input_table_entry input_csi_table[] = { 274 { '@', "", INPUT_CSI_ICH }, 275 { 'A', "", INPUT_CSI_CUU }, 276 { 'B', "", INPUT_CSI_CUD }, 277 { 'C', "", INPUT_CSI_CUF }, 278 { 'D', "", INPUT_CSI_CUB }, 279 { 'E', "", INPUT_CSI_CNL }, 280 { 'F', "", INPUT_CSI_CPL }, 281 { 'G', "", INPUT_CSI_HPA }, 282 { 'H', "", INPUT_CSI_CUP }, 283 { 'J', "", INPUT_CSI_ED }, 284 { 'K', "", INPUT_CSI_EL }, 285 { 'L', "", INPUT_CSI_IL }, 286 { 'M', "", INPUT_CSI_DL }, 287 { 'P', "", INPUT_CSI_DCH }, 288 { 'S', "", INPUT_CSI_SU }, 289 { 'S', "?", INPUT_CSI_SM_GRAPHICS }, 290 { 'T', "", INPUT_CSI_SD }, 291 { 'X', "", INPUT_CSI_ECH }, 292 { 'Z', "", INPUT_CSI_CBT }, 293 { '`', "", INPUT_CSI_HPA }, 294 { 'b', "", INPUT_CSI_REP }, 295 { 'c', "", INPUT_CSI_DA }, 296 { 'c', ">", INPUT_CSI_DA_TWO }, 297 { 'd', "", INPUT_CSI_VPA }, 298 { 'f', "", INPUT_CSI_CUP }, 299 { 'g', "", INPUT_CSI_TBC }, 300 { 'h', "", INPUT_CSI_SM }, 301 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 302 { 'l', "", INPUT_CSI_RM }, 303 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 304 { 'm', "", INPUT_CSI_SGR }, 305 { 'm', ">", INPUT_CSI_MODSET }, 306 { 'n', "", INPUT_CSI_DSR }, 307 { 'n', ">", INPUT_CSI_MODOFF }, 308 { 'q', " ", INPUT_CSI_DECSCUSR }, 309 { 'q', ">", INPUT_CSI_XDA }, 310 { 'r', "", INPUT_CSI_DECSTBM }, 311 { 's', "", INPUT_CSI_SCP }, 312 { 't', "", INPUT_CSI_WINOPS }, 313 { 'u', "", INPUT_CSI_RCP } 314 }; 315 316 /* Input transition. */ 317 struct input_transition { 318 int first; 319 int last; 320 321 int (*handler)(struct input_ctx *); 322 const struct input_state *state; 323 }; 324 325 /* Input state. */ 326 struct input_state { 327 const char *name; 328 void (*enter)(struct input_ctx *); 329 void (*exit)(struct input_ctx *); 330 const struct input_transition *transitions; 331 }; 332 333 /* State transitions available from all states. */ 334 #define INPUT_STATE_ANYWHERE \ 335 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 336 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 337 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 338 339 /* Forward declarations of state tables. */ 340 static const struct input_transition input_state_ground_table[]; 341 static const struct input_transition input_state_esc_enter_table[]; 342 static const struct input_transition input_state_esc_intermediate_table[]; 343 static const struct input_transition input_state_csi_enter_table[]; 344 static const struct input_transition input_state_csi_parameter_table[]; 345 static const struct input_transition input_state_csi_intermediate_table[]; 346 static const struct input_transition input_state_csi_ignore_table[]; 347 static const struct input_transition input_state_dcs_enter_table[]; 348 static const struct input_transition input_state_dcs_parameter_table[]; 349 static const struct input_transition input_state_dcs_intermediate_table[]; 350 static const struct input_transition input_state_dcs_handler_table[]; 351 static const struct input_transition input_state_dcs_escape_table[]; 352 static const struct input_transition input_state_dcs_ignore_table[]; 353 static const struct input_transition input_state_osc_string_table[]; 354 static const struct input_transition input_state_apc_string_table[]; 355 static const struct input_transition input_state_rename_string_table[]; 356 static const struct input_transition input_state_consume_st_table[]; 357 358 /* ground state definition. */ 359 static const struct input_state input_state_ground = { 360 "ground", 361 input_ground, NULL, 362 input_state_ground_table 363 }; 364 365 /* esc_enter state definition. */ 366 static const struct input_state input_state_esc_enter = { 367 "esc_enter", 368 input_clear, NULL, 369 input_state_esc_enter_table 370 }; 371 372 /* esc_intermediate state definition. */ 373 static const struct input_state input_state_esc_intermediate = { 374 "esc_intermediate", 375 NULL, NULL, 376 input_state_esc_intermediate_table 377 }; 378 379 /* csi_enter state definition. */ 380 static const struct input_state input_state_csi_enter = { 381 "csi_enter", 382 input_clear, NULL, 383 input_state_csi_enter_table 384 }; 385 386 /* csi_parameter state definition. */ 387 static const struct input_state input_state_csi_parameter = { 388 "csi_parameter", 389 NULL, NULL, 390 input_state_csi_parameter_table 391 }; 392 393 /* csi_intermediate state definition. */ 394 static const struct input_state input_state_csi_intermediate = { 395 "csi_intermediate", 396 NULL, NULL, 397 input_state_csi_intermediate_table 398 }; 399 400 /* csi_ignore state definition. */ 401 static const struct input_state input_state_csi_ignore = { 402 "csi_ignore", 403 NULL, NULL, 404 input_state_csi_ignore_table 405 }; 406 407 /* dcs_enter state definition. */ 408 static const struct input_state input_state_dcs_enter = { 409 "dcs_enter", 410 input_enter_dcs, NULL, 411 input_state_dcs_enter_table 412 }; 413 414 /* dcs_parameter state definition. */ 415 static const struct input_state input_state_dcs_parameter = { 416 "dcs_parameter", 417 NULL, NULL, 418 input_state_dcs_parameter_table 419 }; 420 421 /* dcs_intermediate state definition. */ 422 static const struct input_state input_state_dcs_intermediate = { 423 "dcs_intermediate", 424 NULL, NULL, 425 input_state_dcs_intermediate_table 426 }; 427 428 /* dcs_handler state definition. */ 429 static const struct input_state input_state_dcs_handler = { 430 "dcs_handler", 431 NULL, NULL, 432 input_state_dcs_handler_table 433 }; 434 435 /* dcs_escape state definition. */ 436 static const struct input_state input_state_dcs_escape = { 437 "dcs_escape", 438 NULL, NULL, 439 input_state_dcs_escape_table 440 }; 441 442 /* dcs_ignore state definition. */ 443 static const struct input_state input_state_dcs_ignore = { 444 "dcs_ignore", 445 NULL, NULL, 446 input_state_dcs_ignore_table 447 }; 448 449 /* osc_string state definition. */ 450 static const struct input_state input_state_osc_string = { 451 "osc_string", 452 input_enter_osc, input_exit_osc, 453 input_state_osc_string_table 454 }; 455 456 /* apc_string state definition. */ 457 static const struct input_state input_state_apc_string = { 458 "apc_string", 459 input_enter_apc, input_exit_apc, 460 input_state_apc_string_table 461 }; 462 463 /* rename_string state definition. */ 464 static const struct input_state input_state_rename_string = { 465 "rename_string", 466 input_enter_rename, input_exit_rename, 467 input_state_rename_string_table 468 }; 469 470 /* consume_st state definition. */ 471 static const struct input_state input_state_consume_st = { 472 "consume_st", 473 input_enter_rename, NULL, /* rename also waits for ST */ 474 input_state_consume_st_table 475 }; 476 477 /* ground state table. */ 478 static const struct input_transition input_state_ground_table[] = { 479 INPUT_STATE_ANYWHERE, 480 481 { 0x00, 0x17, input_c0_dispatch, NULL }, 482 { 0x19, 0x19, input_c0_dispatch, NULL }, 483 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 484 { 0x20, 0x7e, input_print, NULL }, 485 { 0x7f, 0x7f, NULL, NULL }, 486 { 0x80, 0xff, input_top_bit_set, NULL }, 487 488 { -1, -1, NULL, NULL } 489 }; 490 491 /* esc_enter state table. */ 492 static const struct input_transition input_state_esc_enter_table[] = { 493 INPUT_STATE_ANYWHERE, 494 495 { 0x00, 0x17, input_c0_dispatch, NULL }, 496 { 0x19, 0x19, input_c0_dispatch, NULL }, 497 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 498 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 499 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 500 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 501 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 502 { 0x58, 0x58, NULL, &input_state_consume_st }, 503 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 504 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 505 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 506 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 507 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 508 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 509 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 510 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 511 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 512 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 513 { 0x7f, 0xff, NULL, NULL }, 514 515 { -1, -1, NULL, NULL } 516 }; 517 518 /* esc_intermediate state table. */ 519 static const struct input_transition input_state_esc_intermediate_table[] = { 520 INPUT_STATE_ANYWHERE, 521 522 { 0x00, 0x17, input_c0_dispatch, NULL }, 523 { 0x19, 0x19, input_c0_dispatch, NULL }, 524 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 525 { 0x20, 0x2f, input_intermediate, NULL }, 526 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 527 { 0x7f, 0xff, NULL, NULL }, 528 529 { -1, -1, NULL, NULL } 530 }; 531 532 /* csi_enter state table. */ 533 static const struct input_transition input_state_csi_enter_table[] = { 534 INPUT_STATE_ANYWHERE, 535 536 { 0x00, 0x17, input_c0_dispatch, NULL }, 537 { 0x19, 0x19, input_c0_dispatch, NULL }, 538 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 539 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 540 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 541 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 542 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 543 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 544 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 545 { 0x7f, 0xff, NULL, NULL }, 546 547 { -1, -1, NULL, NULL } 548 }; 549 550 /* csi_parameter state table. */ 551 static const struct input_transition input_state_csi_parameter_table[] = { 552 INPUT_STATE_ANYWHERE, 553 554 { 0x00, 0x17, input_c0_dispatch, NULL }, 555 { 0x19, 0x19, input_c0_dispatch, NULL }, 556 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 557 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 558 { 0x30, 0x39, input_parameter, NULL }, 559 { 0x3a, 0x3a, input_parameter, NULL }, 560 { 0x3b, 0x3b, input_parameter, NULL }, 561 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 562 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 563 { 0x7f, 0xff, NULL, NULL }, 564 565 { -1, -1, NULL, NULL } 566 }; 567 568 /* csi_intermediate state table. */ 569 static const struct input_transition input_state_csi_intermediate_table[] = { 570 INPUT_STATE_ANYWHERE, 571 572 { 0x00, 0x17, input_c0_dispatch, NULL }, 573 { 0x19, 0x19, input_c0_dispatch, NULL }, 574 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 575 { 0x20, 0x2f, input_intermediate, NULL }, 576 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 577 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 578 { 0x7f, 0xff, NULL, NULL }, 579 580 { -1, -1, NULL, NULL } 581 }; 582 583 /* csi_ignore state table. */ 584 static const struct input_transition input_state_csi_ignore_table[] = { 585 INPUT_STATE_ANYWHERE, 586 587 { 0x00, 0x17, input_c0_dispatch, NULL }, 588 { 0x19, 0x19, input_c0_dispatch, NULL }, 589 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 590 { 0x20, 0x3f, NULL, NULL }, 591 { 0x40, 0x7e, NULL, &input_state_ground }, 592 { 0x7f, 0xff, NULL, NULL }, 593 594 { -1, -1, NULL, NULL } 595 }; 596 597 /* dcs_enter state table. */ 598 static const struct input_transition input_state_dcs_enter_table[] = { 599 INPUT_STATE_ANYWHERE, 600 601 { 0x00, 0x17, NULL, NULL }, 602 { 0x19, 0x19, NULL, NULL }, 603 { 0x1c, 0x1f, NULL, NULL }, 604 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 605 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 606 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 607 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 608 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 609 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 610 { 0x7f, 0xff, NULL, NULL }, 611 612 { -1, -1, NULL, NULL } 613 }; 614 615 /* dcs_parameter state table. */ 616 static const struct input_transition input_state_dcs_parameter_table[] = { 617 INPUT_STATE_ANYWHERE, 618 619 { 0x00, 0x17, NULL, NULL }, 620 { 0x19, 0x19, NULL, NULL }, 621 { 0x1c, 0x1f, NULL, NULL }, 622 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 623 { 0x30, 0x39, input_parameter, NULL }, 624 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 625 { 0x3b, 0x3b, input_parameter, NULL }, 626 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 627 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 628 { 0x7f, 0xff, NULL, NULL }, 629 630 { -1, -1, NULL, NULL } 631 }; 632 633 /* dcs_intermediate state table. */ 634 static const struct input_transition input_state_dcs_intermediate_table[] = { 635 INPUT_STATE_ANYWHERE, 636 637 { 0x00, 0x17, NULL, NULL }, 638 { 0x19, 0x19, NULL, NULL }, 639 { 0x1c, 0x1f, NULL, NULL }, 640 { 0x20, 0x2f, input_intermediate, NULL }, 641 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 642 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 643 { 0x7f, 0xff, NULL, NULL }, 644 645 { -1, -1, NULL, NULL } 646 }; 647 648 /* dcs_handler state table. */ 649 static const struct input_transition input_state_dcs_handler_table[] = { 650 /* No INPUT_STATE_ANYWHERE */ 651 652 { 0x00, 0x1a, input_input, NULL }, 653 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 654 { 0x1c, 0xff, input_input, NULL }, 655 656 { -1, -1, NULL, NULL } 657 }; 658 659 /* dcs_escape state table. */ 660 static const struct input_transition input_state_dcs_escape_table[] = { 661 /* No INPUT_STATE_ANYWHERE */ 662 663 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 664 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 665 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 666 667 { -1, -1, NULL, NULL } 668 }; 669 670 /* dcs_ignore state table. */ 671 static const struct input_transition input_state_dcs_ignore_table[] = { 672 INPUT_STATE_ANYWHERE, 673 674 { 0x00, 0x17, NULL, NULL }, 675 { 0x19, 0x19, NULL, NULL }, 676 { 0x1c, 0x1f, NULL, NULL }, 677 { 0x20, 0xff, NULL, NULL }, 678 679 { -1, -1, NULL, NULL } 680 }; 681 682 /* osc_string state table. */ 683 static const struct input_transition input_state_osc_string_table[] = { 684 INPUT_STATE_ANYWHERE, 685 686 { 0x00, 0x06, NULL, NULL }, 687 { 0x07, 0x07, input_end_bel, &input_state_ground }, 688 { 0x08, 0x17, NULL, NULL }, 689 { 0x19, 0x19, NULL, NULL }, 690 { 0x1c, 0x1f, NULL, NULL }, 691 { 0x20, 0xff, input_input, NULL }, 692 693 { -1, -1, NULL, NULL } 694 }; 695 696 /* apc_string state table. */ 697 static const struct input_transition input_state_apc_string_table[] = { 698 INPUT_STATE_ANYWHERE, 699 700 { 0x00, 0x17, NULL, NULL }, 701 { 0x19, 0x19, NULL, NULL }, 702 { 0x1c, 0x1f, NULL, NULL }, 703 { 0x20, 0xff, input_input, NULL }, 704 705 { -1, -1, NULL, NULL } 706 }; 707 708 /* rename_string state table. */ 709 static const struct input_transition input_state_rename_string_table[] = { 710 INPUT_STATE_ANYWHERE, 711 712 { 0x00, 0x17, NULL, NULL }, 713 { 0x19, 0x19, NULL, NULL }, 714 { 0x1c, 0x1f, NULL, NULL }, 715 { 0x20, 0xff, input_input, NULL }, 716 717 { -1, -1, NULL, NULL } 718 }; 719 720 /* consume_st state table. */ 721 static const struct input_transition input_state_consume_st_table[] = { 722 INPUT_STATE_ANYWHERE, 723 724 { 0x00, 0x17, NULL, NULL }, 725 { 0x19, 0x19, NULL, NULL }, 726 { 0x1c, 0x1f, NULL, NULL }, 727 { 0x20, 0xff, NULL, NULL }, 728 729 { -1, -1, NULL, NULL } 730 }; 731 732 /* Input table compare. */ 733 static int 734 input_table_compare(const void *key, const void *value) 735 { 736 const struct input_ctx *ictx = key; 737 const struct input_table_entry *entry = value; 738 739 if (ictx->ch != entry->ch) 740 return (ictx->ch - entry->ch); 741 return (strcmp((const char *)ictx->interm_buf, entry->interm)); 742 } 743 744 /* 745 * Timer - if this expires then have been waiting for a terminator for too 746 * long, so reset to ground. 747 */ 748 static void 749 input_timer_callback(__unused int fd, __unused short events, void *arg) 750 { 751 struct input_ctx *ictx = arg; 752 753 log_debug("%s: %s expired" , __func__, ictx->state->name); 754 input_reset(ictx, 0); 755 } 756 757 /* Start the timer. */ 758 static void 759 input_start_timer(struct input_ctx *ictx) 760 { 761 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 762 763 event_del(&ictx->timer); 764 event_add(&ictx->timer, &tv); 765 } 766 767 /* Reset cell state to default. */ 768 static void 769 input_reset_cell(struct input_ctx *ictx) 770 { 771 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 772 ictx->cell.set = 0; 773 ictx->cell.g0set = ictx->cell.g1set = 0; 774 775 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 776 ictx->old_cx = 0; 777 ictx->old_cy = 0; 778 } 779 780 /* Save screen state. */ 781 static void 782 input_save_state(struct input_ctx *ictx) 783 { 784 struct screen_write_ctx *sctx = &ictx->ctx; 785 struct screen *s = sctx->s; 786 787 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 788 ictx->old_cx = s->cx; 789 ictx->old_cy = s->cy; 790 ictx->old_mode = s->mode; 791 } 792 793 /* Restore screen state. */ 794 static void 795 input_restore_state(struct input_ctx *ictx) 796 { 797 struct screen_write_ctx *sctx = &ictx->ctx; 798 799 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 800 if (ictx->old_mode & MODE_ORIGIN) 801 screen_write_mode_set(sctx, MODE_ORIGIN); 802 else 803 screen_write_mode_clear(sctx, MODE_ORIGIN); 804 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 805 } 806 807 /* Initialise input parser. */ 808 struct input_ctx * 809 input_init(struct window_pane *wp, struct bufferevent *bev, 810 struct colour_palette *palette) 811 { 812 struct input_ctx *ictx; 813 814 ictx = xcalloc(1, sizeof *ictx); 815 ictx->wp = wp; 816 ictx->event = bev; 817 ictx->palette = palette; 818 819 ictx->input_space = INPUT_BUF_START; 820 ictx->input_buf = xmalloc(INPUT_BUF_START); 821 822 ictx->since_ground = evbuffer_new(); 823 if (ictx->since_ground == NULL) 824 fatalx("out of memory"); 825 826 evtimer_set(&ictx->timer, input_timer_callback, ictx); 827 828 input_reset(ictx, 0); 829 return (ictx); 830 } 831 832 /* Destroy input parser. */ 833 void 834 input_free(struct input_ctx *ictx) 835 { 836 u_int i; 837 838 for (i = 0; i < ictx->param_list_len; i++) { 839 if (ictx->param_list[i].type == INPUT_STRING) 840 free(ictx->param_list[i].str); 841 } 842 843 event_del(&ictx->timer); 844 845 free(ictx->input_buf); 846 evbuffer_free(ictx->since_ground); 847 848 free(ictx); 849 } 850 851 /* Reset input state and clear screen. */ 852 void 853 input_reset(struct input_ctx *ictx, int clear) 854 { 855 struct screen_write_ctx *sctx = &ictx->ctx; 856 struct window_pane *wp = ictx->wp; 857 858 input_reset_cell(ictx); 859 860 if (clear && wp != NULL) { 861 if (TAILQ_EMPTY(&wp->modes)) 862 screen_write_start_pane(sctx, wp, &wp->base); 863 else 864 screen_write_start(sctx, &wp->base); 865 screen_write_reset(sctx); 866 screen_write_stop(sctx); 867 } 868 869 input_clear(ictx); 870 871 ictx->state = &input_state_ground; 872 ictx->flags = 0; 873 } 874 875 /* Return pending data. */ 876 struct evbuffer * 877 input_pending(struct input_ctx *ictx) 878 { 879 return (ictx->since_ground); 880 } 881 882 /* Change input state. */ 883 static void 884 input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 885 { 886 if (ictx->state->exit != NULL) 887 ictx->state->exit(ictx); 888 ictx->state = itr->state; 889 if (ictx->state->enter != NULL) 890 ictx->state->enter(ictx); 891 } 892 893 /* Parse data. */ 894 static void 895 input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 896 { 897 struct screen_write_ctx *sctx = &ictx->ctx; 898 const struct input_state *state = NULL; 899 const struct input_transition *itr = NULL; 900 size_t off = 0; 901 902 /* Parse the input. */ 903 while (off < len) { 904 ictx->ch = buf[off++]; 905 906 /* Find the transition. */ 907 if (ictx->state != state || 908 itr == NULL || 909 ictx->ch < itr->first || 910 ictx->ch > itr->last) { 911 itr = ictx->state->transitions; 912 while (itr->first != -1 && itr->last != -1) { 913 if (ictx->ch >= itr->first && 914 ictx->ch <= itr->last) 915 break; 916 itr++; 917 } 918 if (itr->first == -1 || itr->last == -1) { 919 /* No transition? Eh? */ 920 fatalx("no transition from state"); 921 } 922 } 923 state = ictx->state; 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(ictx, 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 } 951 952 /* Parse input from pane. */ 953 void 954 input_parse_pane(struct window_pane *wp) 955 { 956 void *new_data; 957 size_t new_size; 958 959 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 960 input_parse_buffer(wp, new_data, new_size); 961 window_pane_update_used_data(wp, &wp->offset, new_size); 962 } 963 964 /* Parse given input. */ 965 void 966 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 967 { 968 struct input_ctx *ictx = wp->ictx; 969 struct screen_write_ctx *sctx = &ictx->ctx; 970 971 if (len == 0) 972 return; 973 974 window_update_activity(wp->window); 975 wp->flags |= PANE_CHANGED; 976 977 /* Flag new input while in a mode. */ 978 if (!TAILQ_EMPTY(&wp->modes)) 979 wp->flags |= PANE_UNSEENCHANGES; 980 981 /* NULL wp if there is a mode set as don't want to update the tty. */ 982 if (TAILQ_EMPTY(&wp->modes)) 983 screen_write_start_pane(sctx, wp, &wp->base); 984 else 985 screen_write_start(sctx, &wp->base); 986 987 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 988 ictx->state->name, len, (int)len, buf); 989 990 input_parse(ictx, buf, len); 991 screen_write_stop(sctx); 992 } 993 994 /* Parse given input for screen. */ 995 void 996 input_parse_screen(struct input_ctx *ictx, struct screen *s, 997 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 998 { 999 struct screen_write_ctx *sctx = &ictx->ctx; 1000 1001 if (len == 0) 1002 return; 1003 1004 screen_write_start_callback(sctx, s, cb, arg); 1005 input_parse(ictx, buf, len); 1006 screen_write_stop(sctx); 1007 } 1008 1009 /* Split the parameter list (if any). */ 1010 static int 1011 input_split(struct input_ctx *ictx) 1012 { 1013 const char *errstr; 1014 char *ptr, *out; 1015 struct input_param *ip; 1016 u_int i; 1017 1018 for (i = 0; i < ictx->param_list_len; i++) { 1019 if (ictx->param_list[i].type == INPUT_STRING) 1020 free(ictx->param_list[i].str); 1021 } 1022 ictx->param_list_len = 0; 1023 1024 if (ictx->param_len == 0) 1025 return (0); 1026 ip = &ictx->param_list[0]; 1027 1028 ptr = (char *)ictx->param_buf; 1029 while ((out = strsep(&ptr, ";")) != NULL) { 1030 if (*out == '\0') 1031 ip->type = INPUT_MISSING; 1032 else { 1033 if (strchr(out, ':') != NULL) { 1034 ip->type = INPUT_STRING; 1035 ip->str = xstrdup(out); 1036 } else { 1037 ip->type = INPUT_NUMBER; 1038 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1039 if (errstr != NULL) 1040 return (-1); 1041 } 1042 } 1043 ip = &ictx->param_list[++ictx->param_list_len]; 1044 if (ictx->param_list_len == nitems(ictx->param_list)) 1045 return (-1); 1046 } 1047 1048 for (i = 0; i < ictx->param_list_len; i++) { 1049 ip = &ictx->param_list[i]; 1050 if (ip->type == INPUT_MISSING) 1051 log_debug("parameter %u: missing", i); 1052 else if (ip->type == INPUT_STRING) 1053 log_debug("parameter %u: string %s", i, ip->str); 1054 else if (ip->type == INPUT_NUMBER) 1055 log_debug("parameter %u: number %d", i, ip->num); 1056 } 1057 1058 return (0); 1059 } 1060 1061 /* Get an argument or return default value. */ 1062 static int 1063 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1064 { 1065 struct input_param *ip; 1066 int retval; 1067 1068 if (validx >= ictx->param_list_len) 1069 return (defval); 1070 ip = &ictx->param_list[validx]; 1071 if (ip->type == INPUT_MISSING) 1072 return (defval); 1073 if (ip->type == INPUT_STRING) 1074 return (-1); 1075 retval = ip->num; 1076 if (retval < minval) 1077 return (minval); 1078 return (retval); 1079 } 1080 1081 /* Reply to terminal query. */ 1082 static void 1083 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1084 { 1085 struct bufferevent *bev = ictx->event; 1086 va_list ap; 1087 char *reply; 1088 1089 if (bev == NULL) 1090 return; 1091 1092 va_start(ap, fmt); 1093 xvasprintf(&reply, fmt, ap); 1094 va_end(ap); 1095 1096 log_debug("%s: %s", __func__, reply); 1097 bufferevent_write(bev, reply, strlen(reply)); 1098 free(reply); 1099 } 1100 1101 /* Clear saved state. */ 1102 static void 1103 input_clear(struct input_ctx *ictx) 1104 { 1105 event_del(&ictx->timer); 1106 1107 *ictx->interm_buf = '\0'; 1108 ictx->interm_len = 0; 1109 1110 *ictx->param_buf = '\0'; 1111 ictx->param_len = 0; 1112 1113 *ictx->input_buf = '\0'; 1114 ictx->input_len = 0; 1115 1116 ictx->input_end = INPUT_END_ST; 1117 1118 ictx->flags &= ~INPUT_DISCARD; 1119 } 1120 1121 /* Reset for ground state. */ 1122 static void 1123 input_ground(struct input_ctx *ictx) 1124 { 1125 event_del(&ictx->timer); 1126 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1127 1128 if (ictx->input_space > INPUT_BUF_START) { 1129 ictx->input_space = INPUT_BUF_START; 1130 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1131 } 1132 } 1133 1134 /* Output this character to the screen. */ 1135 static int 1136 input_print(struct input_ctx *ictx) 1137 { 1138 struct screen_write_ctx *sctx = &ictx->ctx; 1139 int set; 1140 1141 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1142 1143 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1144 if (set == 1) 1145 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1146 else 1147 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1148 1149 utf8_set(&ictx->cell.cell.data, ictx->ch); 1150 screen_write_collect_add(sctx, &ictx->cell.cell); 1151 1152 utf8_copy(&ictx->last, &ictx->cell.cell.data); 1153 ictx->flags |= INPUT_LAST; 1154 1155 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1156 1157 return (0); 1158 } 1159 1160 /* Collect intermediate string. */ 1161 static int 1162 input_intermediate(struct input_ctx *ictx) 1163 { 1164 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1165 ictx->flags |= INPUT_DISCARD; 1166 else { 1167 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1168 ictx->interm_buf[ictx->interm_len] = '\0'; 1169 } 1170 1171 return (0); 1172 } 1173 1174 /* Collect parameter string. */ 1175 static int 1176 input_parameter(struct input_ctx *ictx) 1177 { 1178 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1179 ictx->flags |= INPUT_DISCARD; 1180 else { 1181 ictx->param_buf[ictx->param_len++] = ictx->ch; 1182 ictx->param_buf[ictx->param_len] = '\0'; 1183 } 1184 1185 return (0); 1186 } 1187 1188 /* Collect input string. */ 1189 static int 1190 input_input(struct input_ctx *ictx) 1191 { 1192 size_t available; 1193 1194 available = ictx->input_space; 1195 while (ictx->input_len + 1 >= available) { 1196 available *= 2; 1197 if (available > INPUT_BUF_LIMIT) { 1198 ictx->flags |= INPUT_DISCARD; 1199 return (0); 1200 } 1201 ictx->input_buf = xrealloc(ictx->input_buf, available); 1202 ictx->input_space = available; 1203 } 1204 ictx->input_buf[ictx->input_len++] = ictx->ch; 1205 ictx->input_buf[ictx->input_len] = '\0'; 1206 1207 return (0); 1208 } 1209 1210 /* Execute C0 control sequence. */ 1211 static int 1212 input_c0_dispatch(struct input_ctx *ictx) 1213 { 1214 struct screen_write_ctx *sctx = &ictx->ctx; 1215 struct window_pane *wp = ictx->wp; 1216 struct screen *s = sctx->s; 1217 1218 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1219 1220 log_debug("%s: '%c'", __func__, ictx->ch); 1221 1222 switch (ictx->ch) { 1223 case '\000': /* NUL */ 1224 break; 1225 case '\007': /* BEL */ 1226 if (wp != NULL) 1227 alerts_queue(wp->window, WINDOW_BELL); 1228 break; 1229 case '\010': /* BS */ 1230 screen_write_backspace(sctx); 1231 break; 1232 case '\011': /* HT */ 1233 /* Don't tab beyond the end of the line. */ 1234 if (s->cx >= screen_size_x(s) - 1) 1235 break; 1236 1237 /* Find the next tab point, or use the last column if none. */ 1238 do { 1239 s->cx++; 1240 if (bit_test(s->tabs, s->cx)) 1241 break; 1242 } while (s->cx < screen_size_x(s) - 1); 1243 break; 1244 case '\012': /* LF */ 1245 case '\013': /* VT */ 1246 case '\014': /* FF */ 1247 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1248 if (s->mode & MODE_CRLF) 1249 screen_write_carriagereturn(sctx); 1250 break; 1251 case '\015': /* CR */ 1252 screen_write_carriagereturn(sctx); 1253 break; 1254 case '\016': /* SO */ 1255 ictx->cell.set = 1; 1256 break; 1257 case '\017': /* SI */ 1258 ictx->cell.set = 0; 1259 break; 1260 default: 1261 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1262 break; 1263 } 1264 1265 ictx->flags &= ~INPUT_LAST; 1266 return (0); 1267 } 1268 1269 /* Execute escape sequence. */ 1270 static int 1271 input_esc_dispatch(struct input_ctx *ictx) 1272 { 1273 struct screen_write_ctx *sctx = &ictx->ctx; 1274 struct screen *s = sctx->s; 1275 struct input_table_entry *entry; 1276 1277 if (ictx->flags & INPUT_DISCARD) 1278 return (0); 1279 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1280 1281 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1282 sizeof input_esc_table[0], input_table_compare); 1283 if (entry == NULL) { 1284 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1285 return (0); 1286 } 1287 1288 switch (entry->type) { 1289 case INPUT_ESC_RIS: 1290 colour_palette_clear(ictx->palette); 1291 input_reset_cell(ictx); 1292 screen_write_reset(sctx); 1293 screen_write_fullredraw(sctx); 1294 break; 1295 case INPUT_ESC_IND: 1296 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1297 break; 1298 case INPUT_ESC_NEL: 1299 screen_write_carriagereturn(sctx); 1300 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1301 break; 1302 case INPUT_ESC_HTS: 1303 if (s->cx < screen_size_x(s)) 1304 bit_set(s->tabs, s->cx); 1305 break; 1306 case INPUT_ESC_RI: 1307 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1308 break; 1309 case INPUT_ESC_DECKPAM: 1310 screen_write_mode_set(sctx, MODE_KKEYPAD); 1311 break; 1312 case INPUT_ESC_DECKPNM: 1313 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1314 break; 1315 case INPUT_ESC_DECSC: 1316 input_save_state(ictx); 1317 break; 1318 case INPUT_ESC_DECRC: 1319 input_restore_state(ictx); 1320 break; 1321 case INPUT_ESC_DECALN: 1322 screen_write_alignmenttest(sctx); 1323 break; 1324 case INPUT_ESC_SCSG0_ON: 1325 ictx->cell.g0set = 1; 1326 break; 1327 case INPUT_ESC_SCSG0_OFF: 1328 ictx->cell.g0set = 0; 1329 break; 1330 case INPUT_ESC_SCSG1_ON: 1331 ictx->cell.g1set = 1; 1332 break; 1333 case INPUT_ESC_SCSG1_OFF: 1334 ictx->cell.g1set = 0; 1335 break; 1336 case INPUT_ESC_ST: 1337 /* ST terminates OSC but the state transition already did it. */ 1338 break; 1339 } 1340 1341 ictx->flags &= ~INPUT_LAST; 1342 return (0); 1343 } 1344 1345 /* Execute control sequence. */ 1346 static int 1347 input_csi_dispatch(struct input_ctx *ictx) 1348 { 1349 struct screen_write_ctx *sctx = &ictx->ctx; 1350 struct screen *s = sctx->s; 1351 struct input_table_entry *entry; 1352 int i, n, m, ek; 1353 u_int cx, bg = ictx->cell.cell.bg; 1354 1355 if (ictx->flags & INPUT_DISCARD) 1356 return (0); 1357 1358 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch, 1359 ictx->interm_buf, ictx->param_buf); 1360 1361 if (input_split(ictx) != 0) 1362 return (0); 1363 1364 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1365 sizeof input_csi_table[0], input_table_compare); 1366 if (entry == NULL) { 1367 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1368 return (0); 1369 } 1370 1371 switch (entry->type) { 1372 case INPUT_CSI_CBT: 1373 /* Find the previous tab point, n times. */ 1374 cx = s->cx; 1375 if (cx > screen_size_x(s) - 1) 1376 cx = screen_size_x(s) - 1; 1377 n = input_get(ictx, 0, 1, 1); 1378 if (n == -1) 1379 break; 1380 while (cx > 0 && n-- > 0) { 1381 do 1382 cx--; 1383 while (cx > 0 && !bit_test(s->tabs, cx)); 1384 } 1385 s->cx = cx; 1386 break; 1387 case INPUT_CSI_CUB: 1388 n = input_get(ictx, 0, 1, 1); 1389 if (n != -1) 1390 screen_write_cursorleft(sctx, n); 1391 break; 1392 case INPUT_CSI_CUD: 1393 n = input_get(ictx, 0, 1, 1); 1394 if (n != -1) 1395 screen_write_cursordown(sctx, n); 1396 break; 1397 case INPUT_CSI_CUF: 1398 n = input_get(ictx, 0, 1, 1); 1399 if (n != -1) 1400 screen_write_cursorright(sctx, n); 1401 break; 1402 case INPUT_CSI_CUP: 1403 n = input_get(ictx, 0, 1, 1); 1404 m = input_get(ictx, 1, 1, 1); 1405 if (n != -1 && m != -1) 1406 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1407 break; 1408 case INPUT_CSI_MODSET: 1409 n = input_get(ictx, 0, 0, 0); 1410 if (n != 4) 1411 break; 1412 m = input_get(ictx, 1, 0, 0); 1413 1414 /* 1415 * Set the extended key reporting mode as per the client 1416 * request, unless "extended-keys" is set to "off". 1417 */ 1418 ek = options_get_number(global_options, "extended-keys"); 1419 if (ek == 0) 1420 break; 1421 screen_write_mode_clear(sctx, EXTENDED_KEY_MODES); 1422 if (m == 2) 1423 screen_write_mode_set(sctx, MODE_KEYS_EXTENDED_2); 1424 else if (m == 1 || ek == 2) 1425 screen_write_mode_set(sctx, MODE_KEYS_EXTENDED); 1426 break; 1427 case INPUT_CSI_MODOFF: 1428 n = input_get(ictx, 0, 0, 0); 1429 if (n != 4) 1430 break; 1431 1432 /* 1433 * Clear the extended key reporting mode as per the client 1434 * request, unless "extended-keys always" forces into mode 1. 1435 */ 1436 screen_write_mode_clear(sctx, 1437 MODE_KEYS_EXTENDED|MODE_KEYS_EXTENDED_2); 1438 if (options_get_number(global_options, "extended-keys") == 2) 1439 screen_write_mode_set(sctx, MODE_KEYS_EXTENDED); 1440 break; 1441 case INPUT_CSI_WINOPS: 1442 input_csi_dispatch_winops(ictx); 1443 break; 1444 case INPUT_CSI_CUU: 1445 n = input_get(ictx, 0, 1, 1); 1446 if (n != -1) 1447 screen_write_cursorup(sctx, n); 1448 break; 1449 case INPUT_CSI_CNL: 1450 n = input_get(ictx, 0, 1, 1); 1451 if (n != -1) { 1452 screen_write_carriagereturn(sctx); 1453 screen_write_cursordown(sctx, n); 1454 } 1455 break; 1456 case INPUT_CSI_CPL: 1457 n = input_get(ictx, 0, 1, 1); 1458 if (n != -1) { 1459 screen_write_carriagereturn(sctx); 1460 screen_write_cursorup(sctx, n); 1461 } 1462 break; 1463 case INPUT_CSI_DA: 1464 switch (input_get(ictx, 0, 0, 0)) { 1465 case -1: 1466 break; 1467 case 0: 1468 #ifdef ENABLE_SIXEL 1469 input_reply(ictx, "\033[?1;2;4c"); 1470 #else 1471 input_reply(ictx, "\033[?1;2c"); 1472 #endif 1473 break; 1474 default: 1475 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1476 break; 1477 } 1478 break; 1479 case INPUT_CSI_DA_TWO: 1480 switch (input_get(ictx, 0, 0, 0)) { 1481 case -1: 1482 break; 1483 case 0: 1484 input_reply(ictx, "\033[>84;0;0c"); 1485 break; 1486 default: 1487 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1488 break; 1489 } 1490 break; 1491 case INPUT_CSI_ECH: 1492 n = input_get(ictx, 0, 1, 1); 1493 if (n != -1) 1494 screen_write_clearcharacter(sctx, n, bg); 1495 break; 1496 case INPUT_CSI_DCH: 1497 n = input_get(ictx, 0, 1, 1); 1498 if (n != -1) 1499 screen_write_deletecharacter(sctx, n, bg); 1500 break; 1501 case INPUT_CSI_DECSTBM: 1502 n = input_get(ictx, 0, 1, 1); 1503 m = input_get(ictx, 1, 1, screen_size_y(s)); 1504 if (n != -1 && m != -1) 1505 screen_write_scrollregion(sctx, n - 1, m - 1); 1506 break; 1507 case INPUT_CSI_DL: 1508 n = input_get(ictx, 0, 1, 1); 1509 if (n != -1) 1510 screen_write_deleteline(sctx, n, bg); 1511 break; 1512 case INPUT_CSI_DSR: 1513 switch (input_get(ictx, 0, 0, 0)) { 1514 case -1: 1515 break; 1516 case 5: 1517 input_reply(ictx, "\033[0n"); 1518 break; 1519 case 6: 1520 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1521 break; 1522 default: 1523 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1524 break; 1525 } 1526 break; 1527 case INPUT_CSI_ED: 1528 switch (input_get(ictx, 0, 0, 0)) { 1529 case -1: 1530 break; 1531 case 0: 1532 screen_write_clearendofscreen(sctx, bg); 1533 break; 1534 case 1: 1535 screen_write_clearstartofscreen(sctx, bg); 1536 break; 1537 case 2: 1538 screen_write_clearscreen(sctx, bg); 1539 break; 1540 case 3: 1541 if (input_get(ictx, 1, 0, 0) == 0) { 1542 /* 1543 * Linux console extension to clear history 1544 * (for example before locking the screen). 1545 */ 1546 screen_write_clearhistory(sctx); 1547 } 1548 break; 1549 default: 1550 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1551 break; 1552 } 1553 break; 1554 case INPUT_CSI_EL: 1555 switch (input_get(ictx, 0, 0, 0)) { 1556 case -1: 1557 break; 1558 case 0: 1559 screen_write_clearendofline(sctx, bg); 1560 break; 1561 case 1: 1562 screen_write_clearstartofline(sctx, bg); 1563 break; 1564 case 2: 1565 screen_write_clearline(sctx, bg); 1566 break; 1567 default: 1568 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1569 break; 1570 } 1571 break; 1572 case INPUT_CSI_HPA: 1573 n = input_get(ictx, 0, 1, 1); 1574 if (n != -1) 1575 screen_write_cursormove(sctx, n - 1, -1, 1); 1576 break; 1577 case INPUT_CSI_ICH: 1578 n = input_get(ictx, 0, 1, 1); 1579 if (n != -1) 1580 screen_write_insertcharacter(sctx, n, bg); 1581 break; 1582 case INPUT_CSI_IL: 1583 n = input_get(ictx, 0, 1, 1); 1584 if (n != -1) 1585 screen_write_insertline(sctx, n, bg); 1586 break; 1587 case INPUT_CSI_REP: 1588 n = input_get(ictx, 0, 1, 1); 1589 if (n == -1) 1590 break; 1591 1592 m = screen_size_x(s) - s->cx; 1593 if (n > m) 1594 n = m; 1595 1596 if (~ictx->flags & INPUT_LAST) 1597 break; 1598 1599 utf8_copy(&ictx->cell.cell.data, &ictx->last); 1600 for (i = 0; i < n; i++) 1601 screen_write_collect_add(sctx, &ictx->cell.cell); 1602 break; 1603 case INPUT_CSI_RCP: 1604 input_restore_state(ictx); 1605 break; 1606 case INPUT_CSI_RM: 1607 input_csi_dispatch_rm(ictx); 1608 break; 1609 case INPUT_CSI_RM_PRIVATE: 1610 input_csi_dispatch_rm_private(ictx); 1611 break; 1612 case INPUT_CSI_SCP: 1613 input_save_state(ictx); 1614 break; 1615 case INPUT_CSI_SGR: 1616 input_csi_dispatch_sgr(ictx); 1617 break; 1618 case INPUT_CSI_SM: 1619 input_csi_dispatch_sm(ictx); 1620 break; 1621 case INPUT_CSI_SM_PRIVATE: 1622 input_csi_dispatch_sm_private(ictx); 1623 break; 1624 case INPUT_CSI_SM_GRAPHICS: 1625 input_csi_dispatch_sm_graphics(ictx); 1626 break; 1627 case INPUT_CSI_SU: 1628 n = input_get(ictx, 0, 1, 1); 1629 if (n != -1) 1630 screen_write_scrollup(sctx, n, bg); 1631 break; 1632 case INPUT_CSI_SD: 1633 n = input_get(ictx, 0, 1, 1); 1634 if (n != -1) 1635 screen_write_scrolldown(sctx, n, bg); 1636 break; 1637 case INPUT_CSI_TBC: 1638 switch (input_get(ictx, 0, 0, 0)) { 1639 case -1: 1640 break; 1641 case 0: 1642 if (s->cx < screen_size_x(s)) 1643 bit_clear(s->tabs, s->cx); 1644 break; 1645 case 3: 1646 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1647 break; 1648 default: 1649 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1650 break; 1651 } 1652 break; 1653 case INPUT_CSI_VPA: 1654 n = input_get(ictx, 0, 1, 1); 1655 if (n != -1) 1656 screen_write_cursormove(sctx, -1, n - 1, 1); 1657 break; 1658 case INPUT_CSI_DECSCUSR: 1659 n = input_get(ictx, 0, 0, 0); 1660 if (n != -1) 1661 screen_set_cursor_style(n, &s->cstyle, &s->mode); 1662 break; 1663 case INPUT_CSI_XDA: 1664 n = input_get(ictx, 0, 0, 0); 1665 if (n == 0) 1666 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1667 break; 1668 1669 } 1670 1671 ictx->flags &= ~INPUT_LAST; 1672 return (0); 1673 } 1674 1675 /* Handle CSI RM. */ 1676 static void 1677 input_csi_dispatch_rm(struct input_ctx *ictx) 1678 { 1679 struct screen_write_ctx *sctx = &ictx->ctx; 1680 u_int i; 1681 1682 for (i = 0; i < ictx->param_list_len; i++) { 1683 switch (input_get(ictx, i, 0, -1)) { 1684 case -1: 1685 break; 1686 case 4: /* IRM */ 1687 screen_write_mode_clear(sctx, MODE_INSERT); 1688 break; 1689 case 34: 1690 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE); 1691 break; 1692 default: 1693 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1694 break; 1695 } 1696 } 1697 } 1698 1699 /* Handle CSI private RM. */ 1700 static void 1701 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1702 { 1703 struct screen_write_ctx *sctx = &ictx->ctx; 1704 struct grid_cell *gc = &ictx->cell.cell; 1705 u_int i; 1706 1707 for (i = 0; i < ictx->param_list_len; i++) { 1708 switch (input_get(ictx, i, 0, -1)) { 1709 case -1: 1710 break; 1711 case 1: /* DECCKM */ 1712 screen_write_mode_clear(sctx, MODE_KCURSOR); 1713 break; 1714 case 3: /* DECCOLM */ 1715 screen_write_cursormove(sctx, 0, 0, 1); 1716 screen_write_clearscreen(sctx, gc->bg); 1717 break; 1718 case 6: /* DECOM */ 1719 screen_write_mode_clear(sctx, MODE_ORIGIN); 1720 screen_write_cursormove(sctx, 0, 0, 1); 1721 break; 1722 case 7: /* DECAWM */ 1723 screen_write_mode_clear(sctx, MODE_WRAP); 1724 break; 1725 case 12: 1726 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING); 1727 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1728 break; 1729 case 25: /* TCEM */ 1730 screen_write_mode_clear(sctx, MODE_CURSOR); 1731 break; 1732 case 1000: 1733 case 1001: 1734 case 1002: 1735 case 1003: 1736 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1737 break; 1738 case 1004: 1739 screen_write_mode_clear(sctx, MODE_FOCUSON); 1740 break; 1741 case 1005: 1742 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1743 break; 1744 case 1006: 1745 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1746 break; 1747 case 47: 1748 case 1047: 1749 screen_write_alternateoff(sctx, gc, 0); 1750 break; 1751 case 1049: 1752 screen_write_alternateoff(sctx, gc, 1); 1753 break; 1754 case 2004: 1755 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1756 break; 1757 default: 1758 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1759 break; 1760 } 1761 } 1762 } 1763 1764 /* Handle CSI SM. */ 1765 static void 1766 input_csi_dispatch_sm(struct input_ctx *ictx) 1767 { 1768 struct screen_write_ctx *sctx = &ictx->ctx; 1769 u_int i; 1770 1771 for (i = 0; i < ictx->param_list_len; i++) { 1772 switch (input_get(ictx, i, 0, -1)) { 1773 case -1: 1774 break; 1775 case 4: /* IRM */ 1776 screen_write_mode_set(sctx, MODE_INSERT); 1777 break; 1778 case 34: 1779 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE); 1780 break; 1781 default: 1782 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1783 break; 1784 } 1785 } 1786 } 1787 1788 /* Handle CSI private SM. */ 1789 static void 1790 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1791 { 1792 struct screen_write_ctx *sctx = &ictx->ctx; 1793 struct grid_cell *gc = &ictx->cell.cell; 1794 u_int i; 1795 1796 for (i = 0; i < ictx->param_list_len; i++) { 1797 switch (input_get(ictx, i, 0, -1)) { 1798 case -1: 1799 break; 1800 case 1: /* DECCKM */ 1801 screen_write_mode_set(sctx, MODE_KCURSOR); 1802 break; 1803 case 3: /* DECCOLM */ 1804 screen_write_cursormove(sctx, 0, 0, 1); 1805 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1806 break; 1807 case 6: /* DECOM */ 1808 screen_write_mode_set(sctx, MODE_ORIGIN); 1809 screen_write_cursormove(sctx, 0, 0, 1); 1810 break; 1811 case 7: /* DECAWM */ 1812 screen_write_mode_set(sctx, MODE_WRAP); 1813 break; 1814 case 12: 1815 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING); 1816 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1817 break; 1818 case 25: /* TCEM */ 1819 screen_write_mode_set(sctx, MODE_CURSOR); 1820 break; 1821 case 1000: 1822 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1823 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1824 break; 1825 case 1002: 1826 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1827 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1828 break; 1829 case 1003: 1830 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1831 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1832 break; 1833 case 1004: 1834 screen_write_mode_set(sctx, MODE_FOCUSON); 1835 break; 1836 case 1005: 1837 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1838 break; 1839 case 1006: 1840 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1841 break; 1842 case 47: 1843 case 1047: 1844 screen_write_alternateon(sctx, gc, 0); 1845 break; 1846 case 1049: 1847 screen_write_alternateon(sctx, gc, 1); 1848 break; 1849 case 2004: 1850 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1851 break; 1852 default: 1853 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1854 break; 1855 } 1856 } 1857 } 1858 1859 /* Handle CSI graphics SM. */ 1860 static void 1861 input_csi_dispatch_sm_graphics(__unused struct input_ctx *ictx) 1862 { 1863 #ifdef ENABLE_SIXEL 1864 int n, m, o; 1865 1866 if (ictx->param_list_len > 3) 1867 return; 1868 n = input_get(ictx, 0, 0, 0); 1869 m = input_get(ictx, 1, 0, 0); 1870 o = input_get(ictx, 2, 0, 0); 1871 1872 if (n == 1 && (m == 1 || m == 2 || m == 4)) 1873 input_reply(ictx, "\033[?%d;0;%uS", n, SIXEL_COLOUR_REGISTERS); 1874 else 1875 input_reply(ictx, "\033[?%d;3;%dS", n, o); 1876 #endif 1877 } 1878 1879 /* Handle CSI window operations. */ 1880 static void 1881 input_csi_dispatch_winops(struct input_ctx *ictx) 1882 { 1883 struct screen_write_ctx *sctx = &ictx->ctx; 1884 struct screen *s = sctx->s; 1885 struct window_pane *wp = ictx->wp; 1886 struct window *w = NULL; 1887 u_int x = screen_size_x(s), y = screen_size_y(s); 1888 int n, m; 1889 1890 if (wp != NULL) 1891 w = wp->window; 1892 1893 m = 0; 1894 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1895 switch (n) { 1896 case 1: 1897 case 2: 1898 case 5: 1899 case 6: 1900 case 7: 1901 case 11: 1902 case 13: 1903 case 20: 1904 case 21: 1905 case 24: 1906 break; 1907 case 3: 1908 case 4: 1909 case 8: 1910 m++; 1911 if (input_get(ictx, m, 0, -1) == -1) 1912 return; 1913 /* FALLTHROUGH */ 1914 case 9: 1915 case 10: 1916 m++; 1917 if (input_get(ictx, m, 0, -1) == -1) 1918 return; 1919 break; 1920 case 14: 1921 if (w == NULL) 1922 break; 1923 input_reply(ictx, "\033[4;%u;%ut", y * w->ypixel, 1924 x * w->xpixel); 1925 break; 1926 case 15: 1927 if (w == NULL) 1928 break; 1929 input_reply(ictx, "\033[5;%u;%ut", y * w->ypixel, 1930 x * w->xpixel); 1931 break; 1932 case 16: 1933 if (w == NULL) 1934 break; 1935 input_reply(ictx, "\033[6;%u;%ut", w->ypixel, 1936 w->xpixel); 1937 break; 1938 case 18: 1939 input_reply(ictx, "\033[8;%u;%ut", y, x); 1940 break; 1941 case 19: 1942 input_reply(ictx, "\033[9;%u;%ut", y, x); 1943 break; 1944 case 22: 1945 m++; 1946 switch (input_get(ictx, m, 0, -1)) { 1947 case -1: 1948 return; 1949 case 0: 1950 case 2: 1951 screen_push_title(sctx->s); 1952 break; 1953 } 1954 break; 1955 case 23: 1956 m++; 1957 switch (input_get(ictx, m, 0, -1)) { 1958 case -1: 1959 return; 1960 case 0: 1961 case 2: 1962 screen_pop_title(sctx->s); 1963 if (wp == NULL) 1964 break; 1965 notify_pane("pane-title-changed", wp); 1966 server_redraw_window_borders(w); 1967 server_status_window(w); 1968 break; 1969 } 1970 break; 1971 default: 1972 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1973 break; 1974 } 1975 m++; 1976 } 1977 } 1978 1979 /* Helper for 256 colour SGR. */ 1980 static int 1981 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1982 { 1983 struct grid_cell *gc = &ictx->cell.cell; 1984 1985 if (c == -1 || c > 255) { 1986 if (fgbg == 38) 1987 gc->fg = 8; 1988 else if (fgbg == 48) 1989 gc->bg = 8; 1990 } else { 1991 if (fgbg == 38) 1992 gc->fg = c | COLOUR_FLAG_256; 1993 else if (fgbg == 48) 1994 gc->bg = c | COLOUR_FLAG_256; 1995 else if (fgbg == 58) 1996 gc->us = c | COLOUR_FLAG_256; 1997 } 1998 return (1); 1999 } 2000 2001 /* Handle CSI SGR for 256 colours. */ 2002 static void 2003 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 2004 { 2005 int c; 2006 2007 c = input_get(ictx, (*i) + 1, 0, -1); 2008 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 2009 (*i)++; 2010 } 2011 2012 /* Helper for RGB colour SGR. */ 2013 static int 2014 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 2015 int b) 2016 { 2017 struct grid_cell *gc = &ictx->cell.cell; 2018 2019 if (r == -1 || r > 255) 2020 return (0); 2021 if (g == -1 || g > 255) 2022 return (0); 2023 if (b == -1 || b > 255) 2024 return (0); 2025 2026 if (fgbg == 38) 2027 gc->fg = colour_join_rgb(r, g, b); 2028 else if (fgbg == 48) 2029 gc->bg = colour_join_rgb(r, g, b); 2030 else if (fgbg == 58) 2031 gc->us = colour_join_rgb(r, g, b); 2032 return (1); 2033 } 2034 2035 /* Handle CSI SGR for RGB colours. */ 2036 static void 2037 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 2038 { 2039 int r, g, b; 2040 2041 r = input_get(ictx, (*i) + 1, 0, -1); 2042 g = input_get(ictx, (*i) + 2, 0, -1); 2043 b = input_get(ictx, (*i) + 3, 0, -1); 2044 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 2045 (*i) += 3; 2046 } 2047 2048 /* Handle CSI SGR with a ISO parameter. */ 2049 static void 2050 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 2051 { 2052 struct grid_cell *gc = &ictx->cell.cell; 2053 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 2054 int p[8]; 2055 u_int n; 2056 const char *errstr; 2057 2058 for (n = 0; n < nitems(p); n++) 2059 p[n] = -1; 2060 n = 0; 2061 2062 ptr = copy = xstrdup(s); 2063 while ((out = strsep(&ptr, ":")) != NULL) { 2064 if (*out != '\0') { 2065 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 2066 if (errstr != NULL || n == nitems(p)) { 2067 free(copy); 2068 return; 2069 } 2070 } else { 2071 n++; 2072 if (n == nitems(p)) { 2073 free(copy); 2074 return; 2075 } 2076 } 2077 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 2078 } 2079 free(copy); 2080 2081 if (n == 0) 2082 return; 2083 if (p[0] == 4) { 2084 if (n != 2) 2085 return; 2086 switch (p[1]) { 2087 case 0: 2088 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2089 break; 2090 case 1: 2091 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2092 gc->attr |= GRID_ATTR_UNDERSCORE; 2093 break; 2094 case 2: 2095 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2096 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2097 break; 2098 case 3: 2099 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2100 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2101 break; 2102 case 4: 2103 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2104 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2105 break; 2106 case 5: 2107 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2108 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2109 break; 2110 } 2111 return; 2112 } 2113 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2114 return; 2115 switch (p[1]) { 2116 case 2: 2117 if (n < 3) 2118 break; 2119 if (n == 5) 2120 i = 2; 2121 else 2122 i = 3; 2123 if (n < i + 3) 2124 break; 2125 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2126 p[i + 2]); 2127 break; 2128 case 5: 2129 if (n < 3) 2130 break; 2131 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2132 break; 2133 } 2134 } 2135 2136 /* Handle CSI SGR. */ 2137 static void 2138 input_csi_dispatch_sgr(struct input_ctx *ictx) 2139 { 2140 struct grid_cell *gc = &ictx->cell.cell; 2141 u_int i, link; 2142 int n; 2143 2144 if (ictx->param_list_len == 0) { 2145 memcpy(gc, &grid_default_cell, sizeof *gc); 2146 return; 2147 } 2148 2149 for (i = 0; i < ictx->param_list_len; i++) { 2150 if (ictx->param_list[i].type == INPUT_STRING) { 2151 input_csi_dispatch_sgr_colon(ictx, i); 2152 continue; 2153 } 2154 n = input_get(ictx, i, 0, 0); 2155 if (n == -1) 2156 continue; 2157 2158 if (n == 38 || n == 48 || n == 58) { 2159 i++; 2160 switch (input_get(ictx, i, 0, -1)) { 2161 case 2: 2162 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2163 break; 2164 case 5: 2165 input_csi_dispatch_sgr_256(ictx, n, &i); 2166 break; 2167 } 2168 continue; 2169 } 2170 2171 switch (n) { 2172 case 0: 2173 link = gc->link; 2174 memcpy(gc, &grid_default_cell, sizeof *gc); 2175 gc->link = link; 2176 break; 2177 case 1: 2178 gc->attr |= GRID_ATTR_BRIGHT; 2179 break; 2180 case 2: 2181 gc->attr |= GRID_ATTR_DIM; 2182 break; 2183 case 3: 2184 gc->attr |= GRID_ATTR_ITALICS; 2185 break; 2186 case 4: 2187 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2188 gc->attr |= GRID_ATTR_UNDERSCORE; 2189 break; 2190 case 5: 2191 case 6: 2192 gc->attr |= GRID_ATTR_BLINK; 2193 break; 2194 case 7: 2195 gc->attr |= GRID_ATTR_REVERSE; 2196 break; 2197 case 8: 2198 gc->attr |= GRID_ATTR_HIDDEN; 2199 break; 2200 case 9: 2201 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2202 break; 2203 case 21: 2204 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2205 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2206 break; 2207 case 22: 2208 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2209 break; 2210 case 23: 2211 gc->attr &= ~GRID_ATTR_ITALICS; 2212 break; 2213 case 24: 2214 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2215 break; 2216 case 25: 2217 gc->attr &= ~GRID_ATTR_BLINK; 2218 break; 2219 case 27: 2220 gc->attr &= ~GRID_ATTR_REVERSE; 2221 break; 2222 case 28: 2223 gc->attr &= ~GRID_ATTR_HIDDEN; 2224 break; 2225 case 29: 2226 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2227 break; 2228 case 30: 2229 case 31: 2230 case 32: 2231 case 33: 2232 case 34: 2233 case 35: 2234 case 36: 2235 case 37: 2236 gc->fg = n - 30; 2237 break; 2238 case 39: 2239 gc->fg = 8; 2240 break; 2241 case 40: 2242 case 41: 2243 case 42: 2244 case 43: 2245 case 44: 2246 case 45: 2247 case 46: 2248 case 47: 2249 gc->bg = n - 40; 2250 break; 2251 case 49: 2252 gc->bg = 8; 2253 break; 2254 case 53: 2255 gc->attr |= GRID_ATTR_OVERLINE; 2256 break; 2257 case 55: 2258 gc->attr &= ~GRID_ATTR_OVERLINE; 2259 break; 2260 case 59: 2261 gc->us = 8; 2262 break; 2263 case 90: 2264 case 91: 2265 case 92: 2266 case 93: 2267 case 94: 2268 case 95: 2269 case 96: 2270 case 97: 2271 gc->fg = n; 2272 break; 2273 case 100: 2274 case 101: 2275 case 102: 2276 case 103: 2277 case 104: 2278 case 105: 2279 case 106: 2280 case 107: 2281 gc->bg = n - 10; 2282 break; 2283 } 2284 } 2285 } 2286 2287 /* End of input with BEL. */ 2288 static int 2289 input_end_bel(struct input_ctx *ictx) 2290 { 2291 log_debug("%s", __func__); 2292 2293 ictx->input_end = INPUT_END_BEL; 2294 2295 return (0); 2296 } 2297 2298 /* DCS string started. */ 2299 static void 2300 input_enter_dcs(struct input_ctx *ictx) 2301 { 2302 log_debug("%s", __func__); 2303 2304 input_clear(ictx); 2305 input_start_timer(ictx); 2306 ictx->flags &= ~INPUT_LAST; 2307 } 2308 2309 /* DCS terminator (ST) received. */ 2310 static int 2311 input_dcs_dispatch(struct input_ctx *ictx) 2312 { 2313 struct window_pane *wp = ictx->wp; 2314 struct screen_write_ctx *sctx = &ictx->ctx; 2315 char *buf = (char *)ictx->input_buf; 2316 size_t len = ictx->input_len; 2317 const char prefix[] = "tmux;"; 2318 const u_int prefixlen = (sizeof prefix) - 1; 2319 long long allow_passthrough = 0; 2320 #ifdef ENABLE_SIXEL 2321 struct window *w; 2322 struct sixel_image *si; 2323 #endif 2324 2325 if (wp == NULL) 2326 return (0); 2327 2328 if (ictx->flags & INPUT_DISCARD) { 2329 log_debug("%s: %zu bytes (discard)", __func__, len); 2330 return (0); 2331 } 2332 2333 #ifdef ENABLE_SIXEL 2334 w = wp->window; 2335 if (buf[0] == 'q') { 2336 si = sixel_parse(buf, len, w->xpixel, w->ypixel); 2337 if (si != NULL) 2338 screen_write_sixelimage(sctx, si, ictx->cell.cell.bg); 2339 } 2340 #endif 2341 2342 allow_passthrough = options_get_number(wp->options, "allow-passthrough"); 2343 if (!allow_passthrough) 2344 return (0); 2345 log_debug("%s: \"%s\"", __func__, buf); 2346 2347 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) { 2348 screen_write_rawstring(sctx, (u_char *)buf + prefixlen, len - prefixlen, 2349 allow_passthrough == 2); 2350 } 2351 2352 return (0); 2353 } 2354 2355 /* OSC string started. */ 2356 static void 2357 input_enter_osc(struct input_ctx *ictx) 2358 { 2359 log_debug("%s", __func__); 2360 2361 input_clear(ictx); 2362 input_start_timer(ictx); 2363 ictx->flags &= ~INPUT_LAST; 2364 } 2365 2366 /* OSC terminator (ST) received. */ 2367 static void 2368 input_exit_osc(struct input_ctx *ictx) 2369 { 2370 struct screen_write_ctx *sctx = &ictx->ctx; 2371 struct window_pane *wp = ictx->wp; 2372 char *p = (char *)ictx->input_buf; 2373 u_int option; 2374 2375 if (ictx->flags & INPUT_DISCARD) 2376 return; 2377 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2378 return; 2379 2380 log_debug("%s: \"%s\" (end %s)", __func__, p, 2381 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2382 2383 option = 0; 2384 while (*p >= '0' && *p <= '9') 2385 option = option * 10 + *p++ - '0'; 2386 if (*p != ';' && *p != '\0') 2387 return; 2388 if (*p == ';') 2389 p++; 2390 2391 switch (option) { 2392 case 0: 2393 case 2: 2394 if (wp != NULL && 2395 options_get_number(wp->options, "allow-set-title") && 2396 screen_set_title(sctx->s, p)) { 2397 notify_pane("pane-title-changed", wp); 2398 server_redraw_window_borders(wp->window); 2399 server_status_window(wp->window); 2400 } 2401 break; 2402 case 4: 2403 input_osc_4(ictx, p); 2404 break; 2405 case 7: 2406 if (utf8_isvalid(p)) { 2407 screen_set_path(sctx->s, p); 2408 if (wp != NULL) { 2409 server_redraw_window_borders(wp->window); 2410 server_status_window(wp->window); 2411 } 2412 } 2413 break; 2414 case 8: 2415 input_osc_8(ictx, p); 2416 break; 2417 case 10: 2418 input_osc_10(ictx, p); 2419 break; 2420 case 11: 2421 input_osc_11(ictx, p); 2422 break; 2423 case 12: 2424 input_osc_12(ictx, p); 2425 break; 2426 case 52: 2427 input_osc_52(ictx, p); 2428 break; 2429 case 104: 2430 input_osc_104(ictx, p); 2431 break; 2432 case 110: 2433 input_osc_110(ictx, p); 2434 break; 2435 case 111: 2436 input_osc_111(ictx, p); 2437 break; 2438 case 112: 2439 input_osc_112(ictx, p); 2440 break; 2441 case 133: 2442 input_osc_133(ictx, p); 2443 break; 2444 default: 2445 log_debug("%s: unknown '%u'", __func__, option); 2446 break; 2447 } 2448 } 2449 2450 /* APC string started. */ 2451 static void 2452 input_enter_apc(struct input_ctx *ictx) 2453 { 2454 log_debug("%s", __func__); 2455 2456 input_clear(ictx); 2457 input_start_timer(ictx); 2458 ictx->flags &= ~INPUT_LAST; 2459 } 2460 2461 /* APC terminator (ST) received. */ 2462 static void 2463 input_exit_apc(struct input_ctx *ictx) 2464 { 2465 struct screen_write_ctx *sctx = &ictx->ctx; 2466 struct window_pane *wp = ictx->wp; 2467 char *p = (char *)ictx->input_buf; 2468 2469 if (ictx->flags & INPUT_DISCARD) 2470 return; 2471 log_debug("%s: \"%s\"", __func__, p); 2472 2473 if (screen_set_title(sctx->s, p) && wp != NULL) { 2474 notify_pane("pane-title-changed", wp); 2475 server_redraw_window_borders(wp->window); 2476 server_status_window(wp->window); 2477 } 2478 } 2479 2480 /* Rename string started. */ 2481 static void 2482 input_enter_rename(struct input_ctx *ictx) 2483 { 2484 log_debug("%s", __func__); 2485 2486 input_clear(ictx); 2487 input_start_timer(ictx); 2488 ictx->flags &= ~INPUT_LAST; 2489 } 2490 2491 /* Rename terminator (ST) received. */ 2492 static void 2493 input_exit_rename(struct input_ctx *ictx) 2494 { 2495 struct window_pane *wp = ictx->wp; 2496 struct window *w; 2497 struct options_entry *o; 2498 char *p = (char *)ictx->input_buf; 2499 2500 if (wp == NULL) 2501 return; 2502 if (ictx->flags & INPUT_DISCARD) 2503 return; 2504 if (!options_get_number(ictx->wp->options, "allow-rename")) 2505 return; 2506 log_debug("%s: \"%s\"", __func__, p); 2507 2508 if (!utf8_isvalid(p)) 2509 return; 2510 w = wp->window; 2511 2512 if (ictx->input_len == 0) { 2513 o = options_get_only(w->options, "automatic-rename"); 2514 if (o != NULL) 2515 options_remove_or_default(o, -1, NULL); 2516 if (!options_get_number(w->options, "automatic-rename")) 2517 window_set_name(w, ""); 2518 } else { 2519 options_set_number(w->options, "automatic-rename", 0); 2520 window_set_name(w, ictx->input_buf); 2521 } 2522 server_redraw_window_borders(w); 2523 server_status_window(w); 2524 } 2525 2526 /* Open UTF-8 character. */ 2527 static int 2528 input_top_bit_set(struct input_ctx *ictx) 2529 { 2530 struct screen_write_ctx *sctx = &ictx->ctx; 2531 struct utf8_data *ud = &ictx->utf8data; 2532 2533 ictx->flags &= ~INPUT_LAST; 2534 2535 if (!ictx->utf8started) { 2536 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2537 return (0); 2538 ictx->utf8started = 1; 2539 return (0); 2540 } 2541 2542 switch (utf8_append(ud, ictx->ch)) { 2543 case UTF8_MORE: 2544 return (0); 2545 case UTF8_ERROR: 2546 ictx->utf8started = 0; 2547 return (0); 2548 case UTF8_DONE: 2549 break; 2550 } 2551 ictx->utf8started = 0; 2552 2553 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2554 (int)ud->size, ud->data, ud->width); 2555 2556 utf8_copy(&ictx->cell.cell.data, ud); 2557 screen_write_collect_add(sctx, &ictx->cell.cell); 2558 2559 utf8_copy(&ictx->last, &ictx->cell.cell.data); 2560 ictx->flags |= INPUT_LAST; 2561 2562 return (0); 2563 } 2564 2565 /* Reply to a colour request. */ 2566 static void 2567 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2568 { 2569 u_char r, g, b; 2570 const char *end; 2571 2572 if (c != -1) 2573 c = colour_force_rgb(c); 2574 if (c == -1) 2575 return; 2576 colour_split_rgb(c, &r, &g, &b); 2577 2578 if (ictx->input_end == INPUT_END_BEL) 2579 end = "\007"; 2580 else 2581 end = "\033\\"; 2582 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s", 2583 n, r, r, g, g, b, b, end); 2584 } 2585 2586 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2587 static void 2588 input_osc_4(struct input_ctx *ictx, const char *p) 2589 { 2590 char *copy, *s, *next = NULL; 2591 long idx; 2592 int c, bad = 0, redraw = 0; 2593 2594 copy = s = xstrdup(p); 2595 while (s != NULL && *s != '\0') { 2596 idx = strtol(s, &next, 10); 2597 if (*next++ != ';') { 2598 bad = 1; 2599 break; 2600 } 2601 if (idx < 0 || idx >= 256) { 2602 bad = 1; 2603 break; 2604 } 2605 2606 s = strsep(&next, ";"); 2607 if (strcmp(s, "?") == 0) { 2608 c = colour_palette_get(ictx->palette, idx); 2609 if (c != -1) 2610 input_osc_colour_reply(ictx, 4, c); 2611 continue; 2612 } 2613 if ((c = colour_parseX11(s)) == -1) { 2614 s = next; 2615 continue; 2616 } 2617 if (colour_palette_set(ictx->palette, idx, c)) 2618 redraw = 1; 2619 s = next; 2620 } 2621 if (bad) 2622 log_debug("bad OSC 4: %s", p); 2623 if (redraw) 2624 screen_write_fullredraw(&ictx->ctx); 2625 free(copy); 2626 } 2627 2628 /* Handle the OSC 8 sequence for embedding hyperlinks. */ 2629 static void 2630 input_osc_8(struct input_ctx *ictx, const char *p) 2631 { 2632 struct hyperlinks *hl = ictx->ctx.s->hyperlinks; 2633 struct grid_cell *gc = &ictx->cell.cell; 2634 const char *start, *end, *uri; 2635 char *id = NULL; 2636 2637 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) { 2638 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) { 2639 if (id != NULL) 2640 goto bad; 2641 id = xstrndup(start + 3, end - start - 3); 2642 } 2643 2644 /* The first ; is the end of parameters and start of the URI. */ 2645 if (*end == ';') 2646 break; 2647 } 2648 if (end == NULL || *end != ';') 2649 goto bad; 2650 uri = end + 1; 2651 if (*uri == '\0') { 2652 gc->link = 0; 2653 free(id); 2654 return; 2655 } 2656 gc->link = hyperlinks_put(hl, uri, id); 2657 if (id == NULL) 2658 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link); 2659 else 2660 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link); 2661 free(id); 2662 return; 2663 2664 bad: 2665 log_debug("bad OSC 8 %s", p); 2666 free(id); 2667 } 2668 2669 /* 2670 * Get a client with a foreground for the pane. There isn't much to choose 2671 * between them so just use the first. 2672 */ 2673 static int 2674 input_get_fg_client(struct window_pane *wp) 2675 { 2676 struct window *w = wp->window; 2677 struct client *loop; 2678 2679 TAILQ_FOREACH(loop, &clients, entry) { 2680 if (loop->flags & CLIENT_UNATTACHEDFLAGS) 2681 continue; 2682 if (loop->session == NULL || !session_has(loop->session, w)) 2683 continue; 2684 if (loop->tty.fg == -1) 2685 continue; 2686 return (loop->tty.fg); 2687 } 2688 return (-1); 2689 } 2690 2691 /* Get a client with a background for the pane. */ 2692 static int 2693 input_get_bg_client(struct window_pane *wp) 2694 { 2695 struct window *w = wp->window; 2696 struct client *loop; 2697 2698 TAILQ_FOREACH(loop, &clients, entry) { 2699 if (loop->flags & CLIENT_UNATTACHEDFLAGS) 2700 continue; 2701 if (loop->session == NULL || !session_has(loop->session, w)) 2702 continue; 2703 if (loop->tty.bg == -1) 2704 continue; 2705 return (loop->tty.bg); 2706 } 2707 return (-1); 2708 } 2709 2710 /* 2711 * If any control mode client exists that has provided a bg color, return it. 2712 * Otherwise, return -1. 2713 */ 2714 static int 2715 input_get_bg_control_client(struct window_pane *wp) 2716 { 2717 struct client *c; 2718 2719 if (wp->control_bg == -1) 2720 return (-1); 2721 2722 TAILQ_FOREACH(c, &clients, entry) { 2723 if (c->flags & CLIENT_CONTROL) 2724 return (wp->control_bg); 2725 } 2726 return (-1); 2727 } 2728 2729 /* 2730 * If any control mode client exists that has provided a fg color, return it. 2731 * Otherwise, return -1. 2732 */ 2733 static int 2734 input_get_fg_control_client(struct window_pane *wp) 2735 { 2736 struct client *c; 2737 2738 if (wp->control_fg == -1) 2739 return (-1); 2740 2741 TAILQ_FOREACH(c, &clients, entry) { 2742 if (c->flags & CLIENT_CONTROL) 2743 return (wp->control_fg); 2744 } 2745 return (-1); 2746 } 2747 2748 /* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2749 static void 2750 input_osc_10(struct input_ctx *ictx, const char *p) 2751 { 2752 struct window_pane *wp = ictx->wp; 2753 struct grid_cell defaults; 2754 int c; 2755 2756 if (strcmp(p, "?") == 0) { 2757 if (wp == NULL) 2758 return; 2759 c = input_get_fg_control_client(wp); 2760 if (c == -1) { 2761 tty_default_colours(&defaults, wp); 2762 if (COLOUR_DEFAULT(defaults.fg)) 2763 c = input_get_fg_client(wp); 2764 else 2765 c = defaults.fg; 2766 } 2767 input_osc_colour_reply(ictx, 10, c); 2768 return; 2769 } 2770 2771 if ((c = colour_parseX11(p)) == -1) { 2772 log_debug("bad OSC 10: %s", p); 2773 return; 2774 } 2775 if (ictx->palette != NULL) { 2776 ictx->palette->fg = c; 2777 if (wp != NULL) 2778 wp->flags |= PANE_STYLECHANGED; 2779 screen_write_fullredraw(&ictx->ctx); 2780 } 2781 } 2782 2783 /* Handle the OSC 110 sequence for resetting foreground colour. */ 2784 static void 2785 input_osc_110(struct input_ctx *ictx, const char *p) 2786 { 2787 struct window_pane *wp = ictx->wp; 2788 2789 if (*p != '\0') 2790 return; 2791 if (ictx->palette != NULL) { 2792 ictx->palette->fg = 8; 2793 if (wp != NULL) 2794 wp->flags |= PANE_STYLECHANGED; 2795 screen_write_fullredraw(&ictx->ctx); 2796 } 2797 } 2798 2799 /* Handle the OSC 11 sequence for setting and querying background colour. */ 2800 static void 2801 input_osc_11(struct input_ctx *ictx, const char *p) 2802 { 2803 struct window_pane *wp = ictx->wp; 2804 struct grid_cell defaults; 2805 int c; 2806 2807 if (strcmp(p, "?") == 0) { 2808 if (wp == NULL) 2809 return; 2810 c = input_get_bg_control_client(wp); 2811 if (c == -1) { 2812 tty_default_colours(&defaults, wp); 2813 if (COLOUR_DEFAULT(defaults.bg)) 2814 c = input_get_bg_client(wp); 2815 else 2816 c = defaults.bg; 2817 } 2818 input_osc_colour_reply(ictx, 11, c); 2819 return; 2820 } 2821 2822 if ((c = colour_parseX11(p)) == -1) { 2823 log_debug("bad OSC 11: %s", p); 2824 return; 2825 } 2826 if (ictx->palette != NULL) { 2827 ictx->palette->bg = c; 2828 if (wp != NULL) 2829 wp->flags |= PANE_STYLECHANGED; 2830 screen_write_fullredraw(&ictx->ctx); 2831 } 2832 } 2833 2834 /* Handle the OSC 111 sequence for resetting background colour. */ 2835 static void 2836 input_osc_111(struct input_ctx *ictx, const char *p) 2837 { 2838 struct window_pane *wp = ictx->wp; 2839 2840 if (*p != '\0') 2841 return; 2842 if (ictx->palette != NULL) { 2843 ictx->palette->bg = 8; 2844 if (wp != NULL) 2845 wp->flags |= PANE_STYLECHANGED; 2846 screen_write_fullredraw(&ictx->ctx); 2847 } 2848 } 2849 2850 /* Handle the OSC 12 sequence for setting and querying cursor colour. */ 2851 static void 2852 input_osc_12(struct input_ctx *ictx, const char *p) 2853 { 2854 struct window_pane *wp = ictx->wp; 2855 int c; 2856 2857 if (strcmp(p, "?") == 0) { 2858 if (wp != NULL) { 2859 c = ictx->ctx.s->ccolour; 2860 if (c == -1) 2861 c = ictx->ctx.s->default_ccolour; 2862 input_osc_colour_reply(ictx, 12, c); 2863 } 2864 return; 2865 } 2866 2867 if ((c = colour_parseX11(p)) == -1) { 2868 log_debug("bad OSC 12: %s", p); 2869 return; 2870 } 2871 screen_set_cursor_colour(ictx->ctx.s, c); 2872 } 2873 2874 /* Handle the OSC 112 sequence for resetting cursor colour. */ 2875 static void 2876 input_osc_112(struct input_ctx *ictx, const char *p) 2877 { 2878 if (*p == '\0') /* no arguments allowed */ 2879 screen_set_cursor_colour(ictx->ctx.s, -1); 2880 } 2881 2882 /* Handle the OSC 133 sequence. */ 2883 static void 2884 input_osc_133(struct input_ctx *ictx, const char *p) 2885 { 2886 struct grid *gd = ictx->ctx.s->grid; 2887 u_int line = ictx->ctx.s->cy + gd->hsize; 2888 struct grid_line *gl; 2889 2890 if (line > gd->hsize + gd->sy - 1) 2891 return; 2892 gl = grid_get_line(gd, line); 2893 2894 switch (*p) { 2895 case 'A': 2896 gl->flags |= GRID_LINE_START_PROMPT; 2897 break; 2898 case 'C': 2899 gl->flags |= GRID_LINE_START_OUTPUT; 2900 break; 2901 } 2902 } 2903 2904 /* Handle the OSC 52 sequence for setting the clipboard. */ 2905 static void 2906 input_osc_52(struct input_ctx *ictx, const char *p) 2907 { 2908 struct window_pane *wp = ictx->wp; 2909 char *end; 2910 const char *buf = NULL; 2911 size_t len = 0; 2912 u_char *out; 2913 int outlen, state; 2914 struct screen_write_ctx ctx; 2915 struct paste_buffer *pb; 2916 const char* allow = "cpqs01234567"; 2917 char flags[sizeof "cpqs01234567"] = ""; 2918 u_int i, j = 0; 2919 2920 if (wp == NULL) 2921 return; 2922 state = options_get_number(global_options, "set-clipboard"); 2923 if (state != 2) 2924 return; 2925 2926 if ((end = strchr(p, ';')) == NULL) 2927 return; 2928 end++; 2929 if (*end == '\0') 2930 return; 2931 log_debug("%s: %s", __func__, end); 2932 2933 for (i = 0; p + i != end; i++) { 2934 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL) 2935 flags[j++] = p[i]; 2936 } 2937 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags); 2938 2939 if (strcmp(end, "?") == 0) { 2940 if ((pb = paste_get_top(NULL)) != NULL) 2941 buf = paste_buffer_data(pb, &len); 2942 if (ictx->input_end == INPUT_END_BEL) 2943 input_reply_clipboard(ictx->event, buf, len, "\007"); 2944 else 2945 input_reply_clipboard(ictx->event, buf, len, "\033\\"); 2946 return; 2947 } 2948 2949 len = (strlen(end) / 4) * 3; 2950 if (len == 0) 2951 return; 2952 2953 out = xmalloc(len); 2954 if ((outlen = b64_pton(end, out, len)) == -1) { 2955 free(out); 2956 return; 2957 } 2958 2959 screen_write_start_pane(&ctx, wp, NULL); 2960 screen_write_setselection(&ctx, flags, out, outlen); 2961 screen_write_stop(&ctx); 2962 notify_pane("pane-set-clipboard", wp); 2963 2964 paste_add(NULL, (char *)out, outlen); 2965 } 2966 2967 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2968 static void 2969 input_osc_104(struct input_ctx *ictx, const char *p) 2970 { 2971 char *copy, *s; 2972 long idx; 2973 int bad = 0, redraw = 0; 2974 2975 if (*p == '\0') { 2976 colour_palette_clear(ictx->palette); 2977 screen_write_fullredraw(&ictx->ctx); 2978 return; 2979 } 2980 2981 copy = s = xstrdup(p); 2982 while (*s != '\0') { 2983 idx = strtol(s, &s, 10); 2984 if (*s != '\0' && *s != ';') { 2985 bad = 1; 2986 break; 2987 } 2988 if (idx < 0 || idx >= 256) { 2989 bad = 1; 2990 break; 2991 } 2992 if (colour_palette_set(ictx->palette, idx, -1)) 2993 redraw = 1; 2994 if (*s == ';') 2995 s++; 2996 } 2997 if (bad) 2998 log_debug("bad OSC 104: %s", p); 2999 if (redraw) 3000 screen_write_fullredraw(&ictx->ctx); 3001 free(copy); 3002 } 3003 3004 void 3005 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len, 3006 const char *end) 3007 { 3008 char *out = NULL; 3009 int outlen = 0; 3010 3011 if (buf != NULL && len != 0) { 3012 if (len >= ((size_t)INT_MAX * 3 / 4) - 1) 3013 return; 3014 outlen = 4 * ((len + 2) / 3) + 1; 3015 out = xmalloc(outlen); 3016 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 3017 free(out); 3018 return; 3019 } 3020 } 3021 3022 bufferevent_write(bev, "\033]52;;", 6); 3023 if (outlen != 0) 3024 bufferevent_write(bev, out, outlen); 3025 bufferevent_write(bev, end, strlen(end)); 3026 free(out); 3027 } 3028