1 /* $OpenBSD: input.c,v 1.220 2023/08/23 08:30:07 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 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 int last; 113 114 int flags; 115 #define INPUT_DISCARD 0x1 116 117 const struct input_state *state; 118 119 struct event timer; 120 121 /* 122 * All input received since we were last in the ground state. Sent to 123 * control clients on connection. 124 */ 125 struct evbuffer *since_ground; 126 }; 127 128 /* Helper functions. */ 129 struct input_transition; 130 static int input_split(struct input_ctx *); 131 static int input_get(struct input_ctx *, u_int, int, int); 132 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 133 static void input_set_state(struct input_ctx *, 134 const struct input_transition *); 135 static void input_reset_cell(struct input_ctx *); 136 137 static void input_osc_4(struct input_ctx *, const char *); 138 static void input_osc_8(struct input_ctx *, const char *); 139 static void input_osc_10(struct input_ctx *, const char *); 140 static void input_osc_11(struct input_ctx *, const char *); 141 static void input_osc_12(struct input_ctx *, const char *); 142 static void input_osc_52(struct input_ctx *, const char *); 143 static void input_osc_104(struct input_ctx *, const char *); 144 static void input_osc_110(struct input_ctx *, const char *); 145 static void input_osc_111(struct input_ctx *, const char *); 146 static void input_osc_112(struct input_ctx *, const char *); 147 static void input_osc_133(struct input_ctx *, const char *); 148 149 /* Transition entry/exit handlers. */ 150 static void input_clear(struct input_ctx *); 151 static void input_ground(struct input_ctx *); 152 static void input_enter_dcs(struct input_ctx *); 153 static void input_enter_osc(struct input_ctx *); 154 static void input_exit_osc(struct input_ctx *); 155 static void input_enter_apc(struct input_ctx *); 156 static void input_exit_apc(struct input_ctx *); 157 static void input_enter_rename(struct input_ctx *); 158 static void input_exit_rename(struct input_ctx *); 159 160 /* Input state handlers. */ 161 static int input_print(struct input_ctx *); 162 static int input_intermediate(struct input_ctx *); 163 static int input_parameter(struct input_ctx *); 164 static int input_input(struct input_ctx *); 165 static int input_c0_dispatch(struct input_ctx *); 166 static int input_esc_dispatch(struct input_ctx *); 167 static int input_csi_dispatch(struct input_ctx *); 168 static void input_csi_dispatch_rm(struct input_ctx *); 169 static void input_csi_dispatch_rm_private(struct input_ctx *); 170 static void input_csi_dispatch_sm(struct input_ctx *); 171 static void input_csi_dispatch_sm_private(struct input_ctx *); 172 static void input_csi_dispatch_winops(struct input_ctx *); 173 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 174 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 175 static void input_csi_dispatch_sgr(struct input_ctx *); 176 static int input_dcs_dispatch(struct input_ctx *); 177 static int input_top_bit_set(struct input_ctx *); 178 static int input_end_bel(struct input_ctx *); 179 180 /* Command table comparison function. */ 181 static int input_table_compare(const void *, const void *); 182 183 /* Command table entry. */ 184 struct input_table_entry { 185 int ch; 186 const char *interm; 187 int type; 188 }; 189 190 /* Escape commands. */ 191 enum input_esc_type { 192 INPUT_ESC_DECALN, 193 INPUT_ESC_DECKPAM, 194 INPUT_ESC_DECKPNM, 195 INPUT_ESC_DECRC, 196 INPUT_ESC_DECSC, 197 INPUT_ESC_HTS, 198 INPUT_ESC_IND, 199 INPUT_ESC_NEL, 200 INPUT_ESC_RI, 201 INPUT_ESC_RIS, 202 INPUT_ESC_SCSG0_OFF, 203 INPUT_ESC_SCSG0_ON, 204 INPUT_ESC_SCSG1_OFF, 205 INPUT_ESC_SCSG1_ON, 206 INPUT_ESC_ST, 207 }; 208 209 /* Escape command table. */ 210 static const struct input_table_entry input_esc_table[] = { 211 { '0', "(", INPUT_ESC_SCSG0_ON }, 212 { '0', ")", INPUT_ESC_SCSG1_ON }, 213 { '7', "", INPUT_ESC_DECSC }, 214 { '8', "", INPUT_ESC_DECRC }, 215 { '8', "#", INPUT_ESC_DECALN }, 216 { '=', "", INPUT_ESC_DECKPAM }, 217 { '>', "", INPUT_ESC_DECKPNM }, 218 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 219 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 220 { 'D', "", INPUT_ESC_IND }, 221 { 'E', "", INPUT_ESC_NEL }, 222 { 'H', "", INPUT_ESC_HTS }, 223 { 'M', "", INPUT_ESC_RI }, 224 { '\\', "", INPUT_ESC_ST }, 225 { 'c', "", INPUT_ESC_RIS }, 226 }; 227 228 /* Control (CSI) commands. */ 229 enum input_csi_type { 230 INPUT_CSI_CBT, 231 INPUT_CSI_CNL, 232 INPUT_CSI_CPL, 233 INPUT_CSI_CUB, 234 INPUT_CSI_CUD, 235 INPUT_CSI_CUF, 236 INPUT_CSI_CUP, 237 INPUT_CSI_CUU, 238 INPUT_CSI_DA, 239 INPUT_CSI_DA_TWO, 240 INPUT_CSI_DCH, 241 INPUT_CSI_DECSCUSR, 242 INPUT_CSI_DECSTBM, 243 INPUT_CSI_DL, 244 INPUT_CSI_DSR, 245 INPUT_CSI_ECH, 246 INPUT_CSI_ED, 247 INPUT_CSI_EL, 248 INPUT_CSI_HPA, 249 INPUT_CSI_ICH, 250 INPUT_CSI_IL, 251 INPUT_CSI_MODOFF, 252 INPUT_CSI_MODSET, 253 INPUT_CSI_RCP, 254 INPUT_CSI_REP, 255 INPUT_CSI_RM, 256 INPUT_CSI_RM_PRIVATE, 257 INPUT_CSI_SCP, 258 INPUT_CSI_SD, 259 INPUT_CSI_SGR, 260 INPUT_CSI_SM, 261 INPUT_CSI_SM_PRIVATE, 262 INPUT_CSI_SU, 263 INPUT_CSI_TBC, 264 INPUT_CSI_VPA, 265 INPUT_CSI_WINOPS, 266 INPUT_CSI_XDA, 267 }; 268 269 /* Control (CSI) command table. */ 270 static const struct input_table_entry input_csi_table[] = { 271 { '@', "", INPUT_CSI_ICH }, 272 { 'A', "", INPUT_CSI_CUU }, 273 { 'B', "", INPUT_CSI_CUD }, 274 { 'C', "", INPUT_CSI_CUF }, 275 { 'D', "", INPUT_CSI_CUB }, 276 { 'E', "", INPUT_CSI_CNL }, 277 { 'F', "", INPUT_CSI_CPL }, 278 { 'G', "", INPUT_CSI_HPA }, 279 { 'H', "", INPUT_CSI_CUP }, 280 { 'J', "", INPUT_CSI_ED }, 281 { 'K', "", INPUT_CSI_EL }, 282 { 'L', "", INPUT_CSI_IL }, 283 { 'M', "", INPUT_CSI_DL }, 284 { 'P', "", INPUT_CSI_DCH }, 285 { 'S', "", INPUT_CSI_SU }, 286 { 'T', "", INPUT_CSI_SD }, 287 { 'X', "", INPUT_CSI_ECH }, 288 { 'Z', "", INPUT_CSI_CBT }, 289 { '`', "", INPUT_CSI_HPA }, 290 { 'b', "", INPUT_CSI_REP }, 291 { 'c', "", INPUT_CSI_DA }, 292 { 'c', ">", INPUT_CSI_DA_TWO }, 293 { 'd', "", INPUT_CSI_VPA }, 294 { 'f', "", INPUT_CSI_CUP }, 295 { 'g', "", INPUT_CSI_TBC }, 296 { 'h', "", INPUT_CSI_SM }, 297 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 298 { 'l', "", INPUT_CSI_RM }, 299 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 300 { 'm', "", INPUT_CSI_SGR }, 301 { 'm', ">", INPUT_CSI_MODSET }, 302 { 'n', "", INPUT_CSI_DSR }, 303 { 'n', ">", INPUT_CSI_MODOFF }, 304 { 'q', " ", INPUT_CSI_DECSCUSR }, 305 { 'q', ">", INPUT_CSI_XDA }, 306 { 'r', "", INPUT_CSI_DECSTBM }, 307 { 's', "", INPUT_CSI_SCP }, 308 { 't', "", INPUT_CSI_WINOPS }, 309 { 'u', "", INPUT_CSI_RCP }, 310 }; 311 312 /* Input transition. */ 313 struct input_transition { 314 int first; 315 int last; 316 317 int (*handler)(struct input_ctx *); 318 const struct input_state *state; 319 }; 320 321 /* Input state. */ 322 struct input_state { 323 const char *name; 324 void (*enter)(struct input_ctx *); 325 void (*exit)(struct input_ctx *); 326 const struct input_transition *transitions; 327 }; 328 329 /* State transitions available from all states. */ 330 #define INPUT_STATE_ANYWHERE \ 331 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 332 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 333 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 334 335 /* Forward declarations of state tables. */ 336 static const struct input_transition input_state_ground_table[]; 337 static const struct input_transition input_state_esc_enter_table[]; 338 static const struct input_transition input_state_esc_intermediate_table[]; 339 static const struct input_transition input_state_csi_enter_table[]; 340 static const struct input_transition input_state_csi_parameter_table[]; 341 static const struct input_transition input_state_csi_intermediate_table[]; 342 static const struct input_transition input_state_csi_ignore_table[]; 343 static const struct input_transition input_state_dcs_enter_table[]; 344 static const struct input_transition input_state_dcs_parameter_table[]; 345 static const struct input_transition input_state_dcs_intermediate_table[]; 346 static const struct input_transition input_state_dcs_handler_table[]; 347 static const struct input_transition input_state_dcs_escape_table[]; 348 static const struct input_transition input_state_dcs_ignore_table[]; 349 static const struct input_transition input_state_osc_string_table[]; 350 static const struct input_transition input_state_apc_string_table[]; 351 static const struct input_transition input_state_rename_string_table[]; 352 static const struct input_transition input_state_consume_st_table[]; 353 354 /* ground state definition. */ 355 static const struct input_state input_state_ground = { 356 "ground", 357 input_ground, NULL, 358 input_state_ground_table 359 }; 360 361 /* esc_enter state definition. */ 362 static const struct input_state input_state_esc_enter = { 363 "esc_enter", 364 input_clear, NULL, 365 input_state_esc_enter_table 366 }; 367 368 /* esc_intermediate state definition. */ 369 static const struct input_state input_state_esc_intermediate = { 370 "esc_intermediate", 371 NULL, NULL, 372 input_state_esc_intermediate_table 373 }; 374 375 /* csi_enter state definition. */ 376 static const struct input_state input_state_csi_enter = { 377 "csi_enter", 378 input_clear, NULL, 379 input_state_csi_enter_table 380 }; 381 382 /* csi_parameter state definition. */ 383 static const struct input_state input_state_csi_parameter = { 384 "csi_parameter", 385 NULL, NULL, 386 input_state_csi_parameter_table 387 }; 388 389 /* csi_intermediate state definition. */ 390 static const struct input_state input_state_csi_intermediate = { 391 "csi_intermediate", 392 NULL, NULL, 393 input_state_csi_intermediate_table 394 }; 395 396 /* csi_ignore state definition. */ 397 static const struct input_state input_state_csi_ignore = { 398 "csi_ignore", 399 NULL, NULL, 400 input_state_csi_ignore_table 401 }; 402 403 /* dcs_enter state definition. */ 404 static const struct input_state input_state_dcs_enter = { 405 "dcs_enter", 406 input_enter_dcs, NULL, 407 input_state_dcs_enter_table 408 }; 409 410 /* dcs_parameter state definition. */ 411 static const struct input_state input_state_dcs_parameter = { 412 "dcs_parameter", 413 NULL, NULL, 414 input_state_dcs_parameter_table 415 }; 416 417 /* dcs_intermediate state definition. */ 418 static const struct input_state input_state_dcs_intermediate = { 419 "dcs_intermediate", 420 NULL, NULL, 421 input_state_dcs_intermediate_table 422 }; 423 424 /* dcs_handler state definition. */ 425 static const struct input_state input_state_dcs_handler = { 426 "dcs_handler", 427 NULL, NULL, 428 input_state_dcs_handler_table 429 }; 430 431 /* dcs_escape state definition. */ 432 static const struct input_state input_state_dcs_escape = { 433 "dcs_escape", 434 NULL, NULL, 435 input_state_dcs_escape_table 436 }; 437 438 /* dcs_ignore state definition. */ 439 static const struct input_state input_state_dcs_ignore = { 440 "dcs_ignore", 441 NULL, NULL, 442 input_state_dcs_ignore_table 443 }; 444 445 /* osc_string state definition. */ 446 static const struct input_state input_state_osc_string = { 447 "osc_string", 448 input_enter_osc, input_exit_osc, 449 input_state_osc_string_table 450 }; 451 452 /* apc_string state definition. */ 453 static const struct input_state input_state_apc_string = { 454 "apc_string", 455 input_enter_apc, input_exit_apc, 456 input_state_apc_string_table 457 }; 458 459 /* rename_string state definition. */ 460 static const struct input_state input_state_rename_string = { 461 "rename_string", 462 input_enter_rename, input_exit_rename, 463 input_state_rename_string_table 464 }; 465 466 /* consume_st state definition. */ 467 static const struct input_state input_state_consume_st = { 468 "consume_st", 469 input_enter_rename, NULL, /* rename also waits for ST */ 470 input_state_consume_st_table 471 }; 472 473 /* ground state table. */ 474 static const struct input_transition input_state_ground_table[] = { 475 INPUT_STATE_ANYWHERE, 476 477 { 0x00, 0x17, input_c0_dispatch, NULL }, 478 { 0x19, 0x19, input_c0_dispatch, NULL }, 479 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 480 { 0x20, 0x7e, input_print, NULL }, 481 { 0x7f, 0x7f, NULL, NULL }, 482 { 0x80, 0xff, input_top_bit_set, NULL }, 483 484 { -1, -1, NULL, NULL } 485 }; 486 487 /* esc_enter state table. */ 488 static const struct input_transition input_state_esc_enter_table[] = { 489 INPUT_STATE_ANYWHERE, 490 491 { 0x00, 0x17, input_c0_dispatch, NULL }, 492 { 0x19, 0x19, input_c0_dispatch, NULL }, 493 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 494 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 495 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 496 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 497 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 498 { 0x58, 0x58, NULL, &input_state_consume_st }, 499 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 500 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 501 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 502 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 503 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 504 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 505 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 506 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 507 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 508 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 509 { 0x7f, 0xff, NULL, NULL }, 510 511 { -1, -1, NULL, NULL } 512 }; 513 514 /* esc_intermediate state table. */ 515 static const struct input_transition input_state_esc_intermediate_table[] = { 516 INPUT_STATE_ANYWHERE, 517 518 { 0x00, 0x17, input_c0_dispatch, NULL }, 519 { 0x19, 0x19, input_c0_dispatch, NULL }, 520 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 521 { 0x20, 0x2f, input_intermediate, NULL }, 522 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 523 { 0x7f, 0xff, NULL, NULL }, 524 525 { -1, -1, NULL, NULL } 526 }; 527 528 /* csi_enter state table. */ 529 static const struct input_transition input_state_csi_enter_table[] = { 530 INPUT_STATE_ANYWHERE, 531 532 { 0x00, 0x17, input_c0_dispatch, NULL }, 533 { 0x19, 0x19, input_c0_dispatch, NULL }, 534 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 535 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 536 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 537 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 538 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 539 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 540 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 541 { 0x7f, 0xff, NULL, NULL }, 542 543 { -1, -1, NULL, NULL } 544 }; 545 546 /* csi_parameter state table. */ 547 static const struct input_transition input_state_csi_parameter_table[] = { 548 INPUT_STATE_ANYWHERE, 549 550 { 0x00, 0x17, input_c0_dispatch, NULL }, 551 { 0x19, 0x19, input_c0_dispatch, NULL }, 552 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 553 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 554 { 0x30, 0x39, input_parameter, NULL }, 555 { 0x3a, 0x3a, input_parameter, NULL }, 556 { 0x3b, 0x3b, input_parameter, NULL }, 557 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 558 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 559 { 0x7f, 0xff, NULL, NULL }, 560 561 { -1, -1, NULL, NULL } 562 }; 563 564 /* csi_intermediate state table. */ 565 static const struct input_transition input_state_csi_intermediate_table[] = { 566 INPUT_STATE_ANYWHERE, 567 568 { 0x00, 0x17, input_c0_dispatch, NULL }, 569 { 0x19, 0x19, input_c0_dispatch, NULL }, 570 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 571 { 0x20, 0x2f, input_intermediate, NULL }, 572 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 573 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 574 { 0x7f, 0xff, NULL, NULL }, 575 576 { -1, -1, NULL, NULL } 577 }; 578 579 /* csi_ignore state table. */ 580 static const struct input_transition input_state_csi_ignore_table[] = { 581 INPUT_STATE_ANYWHERE, 582 583 { 0x00, 0x17, input_c0_dispatch, NULL }, 584 { 0x19, 0x19, input_c0_dispatch, NULL }, 585 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 586 { 0x20, 0x3f, NULL, NULL }, 587 { 0x40, 0x7e, NULL, &input_state_ground }, 588 { 0x7f, 0xff, NULL, NULL }, 589 590 { -1, -1, NULL, NULL } 591 }; 592 593 /* dcs_enter state table. */ 594 static const struct input_transition input_state_dcs_enter_table[] = { 595 INPUT_STATE_ANYWHERE, 596 597 { 0x00, 0x17, NULL, NULL }, 598 { 0x19, 0x19, NULL, NULL }, 599 { 0x1c, 0x1f, NULL, NULL }, 600 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 601 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 602 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 603 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 604 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 605 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 606 { 0x7f, 0xff, NULL, NULL }, 607 608 { -1, -1, NULL, NULL } 609 }; 610 611 /* dcs_parameter state table. */ 612 static const struct input_transition input_state_dcs_parameter_table[] = { 613 INPUT_STATE_ANYWHERE, 614 615 { 0x00, 0x17, NULL, NULL }, 616 { 0x19, 0x19, NULL, NULL }, 617 { 0x1c, 0x1f, NULL, NULL }, 618 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 619 { 0x30, 0x39, input_parameter, NULL }, 620 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 621 { 0x3b, 0x3b, input_parameter, NULL }, 622 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 623 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 624 { 0x7f, 0xff, NULL, NULL }, 625 626 { -1, -1, NULL, NULL } 627 }; 628 629 /* dcs_intermediate state table. */ 630 static const struct input_transition input_state_dcs_intermediate_table[] = { 631 INPUT_STATE_ANYWHERE, 632 633 { 0x00, 0x17, NULL, NULL }, 634 { 0x19, 0x19, NULL, NULL }, 635 { 0x1c, 0x1f, NULL, NULL }, 636 { 0x20, 0x2f, input_intermediate, NULL }, 637 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 638 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 639 { 0x7f, 0xff, NULL, NULL }, 640 641 { -1, -1, NULL, NULL } 642 }; 643 644 /* dcs_handler state table. */ 645 static const struct input_transition input_state_dcs_handler_table[] = { 646 /* No INPUT_STATE_ANYWHERE */ 647 648 { 0x00, 0x1a, input_input, NULL }, 649 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 650 { 0x1c, 0xff, input_input, NULL }, 651 652 { -1, -1, NULL, NULL } 653 }; 654 655 /* dcs_escape state table. */ 656 static const struct input_transition input_state_dcs_escape_table[] = { 657 /* No INPUT_STATE_ANYWHERE */ 658 659 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 660 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 661 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 662 663 { -1, -1, NULL, NULL } 664 }; 665 666 /* dcs_ignore state table. */ 667 static const struct input_transition input_state_dcs_ignore_table[] = { 668 INPUT_STATE_ANYWHERE, 669 670 { 0x00, 0x17, NULL, NULL }, 671 { 0x19, 0x19, NULL, NULL }, 672 { 0x1c, 0x1f, NULL, NULL }, 673 { 0x20, 0xff, NULL, NULL }, 674 675 { -1, -1, NULL, NULL } 676 }; 677 678 /* osc_string state table. */ 679 static const struct input_transition input_state_osc_string_table[] = { 680 INPUT_STATE_ANYWHERE, 681 682 { 0x00, 0x06, NULL, NULL }, 683 { 0x07, 0x07, input_end_bel, &input_state_ground }, 684 { 0x08, 0x17, NULL, NULL }, 685 { 0x19, 0x19, NULL, NULL }, 686 { 0x1c, 0x1f, NULL, NULL }, 687 { 0x20, 0xff, input_input, NULL }, 688 689 { -1, -1, NULL, NULL } 690 }; 691 692 /* apc_string state table. */ 693 static const struct input_transition input_state_apc_string_table[] = { 694 INPUT_STATE_ANYWHERE, 695 696 { 0x00, 0x17, NULL, NULL }, 697 { 0x19, 0x19, NULL, NULL }, 698 { 0x1c, 0x1f, NULL, NULL }, 699 { 0x20, 0xff, input_input, NULL }, 700 701 { -1, -1, NULL, NULL } 702 }; 703 704 /* rename_string state table. */ 705 static const struct input_transition input_state_rename_string_table[] = { 706 INPUT_STATE_ANYWHERE, 707 708 { 0x00, 0x17, NULL, NULL }, 709 { 0x19, 0x19, NULL, NULL }, 710 { 0x1c, 0x1f, NULL, NULL }, 711 { 0x20, 0xff, input_input, NULL }, 712 713 { -1, -1, NULL, NULL } 714 }; 715 716 /* consume_st state table. */ 717 static const struct input_transition input_state_consume_st_table[] = { 718 INPUT_STATE_ANYWHERE, 719 720 { 0x00, 0x17, NULL, NULL }, 721 { 0x19, 0x19, NULL, NULL }, 722 { 0x1c, 0x1f, NULL, NULL }, 723 { 0x20, 0xff, NULL, NULL }, 724 725 { -1, -1, NULL, NULL } 726 }; 727 728 /* Input table compare. */ 729 static int 730 input_table_compare(const void *key, const void *value) 731 { 732 const struct input_ctx *ictx = key; 733 const struct input_table_entry *entry = value; 734 735 if (ictx->ch != entry->ch) 736 return (ictx->ch - entry->ch); 737 return (strcmp(ictx->interm_buf, entry->interm)); 738 } 739 740 /* 741 * Timer - if this expires then have been waiting for a terminator for too 742 * long, so reset to ground. 743 */ 744 static void 745 input_timer_callback(__unused int fd, __unused short events, void *arg) 746 { 747 struct input_ctx *ictx = arg; 748 749 log_debug("%s: %s expired" , __func__, ictx->state->name); 750 input_reset(ictx, 0); 751 } 752 753 /* Start the timer. */ 754 static void 755 input_start_timer(struct input_ctx *ictx) 756 { 757 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 758 759 event_del(&ictx->timer); 760 event_add(&ictx->timer, &tv); 761 } 762 763 /* Reset cell state to default. */ 764 static void 765 input_reset_cell(struct input_ctx *ictx) 766 { 767 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 768 ictx->cell.set = 0; 769 ictx->cell.g0set = ictx->cell.g1set = 0; 770 771 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 772 ictx->old_cx = 0; 773 ictx->old_cy = 0; 774 } 775 776 /* Save screen state. */ 777 static void 778 input_save_state(struct input_ctx *ictx) 779 { 780 struct screen_write_ctx *sctx = &ictx->ctx; 781 struct screen *s = sctx->s; 782 783 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 784 ictx->old_cx = s->cx; 785 ictx->old_cy = s->cy; 786 ictx->old_mode = s->mode; 787 } 788 789 /* Restore screen state. */ 790 static void 791 input_restore_state(struct input_ctx *ictx) 792 { 793 struct screen_write_ctx *sctx = &ictx->ctx; 794 795 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 796 if (ictx->old_mode & MODE_ORIGIN) 797 screen_write_mode_set(sctx, MODE_ORIGIN); 798 else 799 screen_write_mode_clear(sctx, MODE_ORIGIN); 800 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 801 } 802 803 /* Initialise input parser. */ 804 struct input_ctx * 805 input_init(struct window_pane *wp, struct bufferevent *bev, 806 struct colour_palette *palette) 807 { 808 struct input_ctx *ictx; 809 810 ictx = xcalloc(1, sizeof *ictx); 811 ictx->wp = wp; 812 ictx->event = bev; 813 ictx->palette = palette; 814 815 ictx->input_space = INPUT_BUF_START; 816 ictx->input_buf = xmalloc(INPUT_BUF_START); 817 818 ictx->since_ground = evbuffer_new(); 819 if (ictx->since_ground == NULL) 820 fatalx("out of memory"); 821 822 evtimer_set(&ictx->timer, input_timer_callback, ictx); 823 824 input_reset(ictx, 0); 825 return (ictx); 826 } 827 828 /* Destroy input parser. */ 829 void 830 input_free(struct input_ctx *ictx) 831 { 832 u_int i; 833 834 for (i = 0; i < ictx->param_list_len; i++) { 835 if (ictx->param_list[i].type == INPUT_STRING) 836 free(ictx->param_list[i].str); 837 } 838 839 event_del(&ictx->timer); 840 841 free(ictx->input_buf); 842 evbuffer_free(ictx->since_ground); 843 844 free(ictx); 845 } 846 847 /* Reset input state and clear screen. */ 848 void 849 input_reset(struct input_ctx *ictx, int clear) 850 { 851 struct screen_write_ctx *sctx = &ictx->ctx; 852 struct window_pane *wp = ictx->wp; 853 854 input_reset_cell(ictx); 855 856 if (clear && wp != NULL) { 857 if (TAILQ_EMPTY(&wp->modes)) 858 screen_write_start_pane(sctx, wp, &wp->base); 859 else 860 screen_write_start(sctx, &wp->base); 861 screen_write_reset(sctx); 862 screen_write_stop(sctx); 863 } 864 865 input_clear(ictx); 866 867 ictx->last = -1; 868 869 ictx->state = &input_state_ground; 870 ictx->flags = 0; 871 } 872 873 /* Return pending data. */ 874 struct evbuffer * 875 input_pending(struct input_ctx *ictx) 876 { 877 return (ictx->since_ground); 878 } 879 880 /* Change input state. */ 881 static void 882 input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 883 { 884 if (ictx->state->exit != NULL) 885 ictx->state->exit(ictx); 886 ictx->state = itr->state; 887 if (ictx->state->enter != NULL) 888 ictx->state->enter(ictx); 889 } 890 891 /* Parse data. */ 892 static void 893 input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 894 { 895 struct screen_write_ctx *sctx = &ictx->ctx; 896 const struct input_state *state = NULL; 897 const struct input_transition *itr = NULL; 898 size_t off = 0; 899 900 /* Parse the input. */ 901 while (off < len) { 902 ictx->ch = buf[off++]; 903 904 /* Find the transition. */ 905 if (ictx->state != state || 906 itr == NULL || 907 ictx->ch < itr->first || 908 ictx->ch > itr->last) { 909 itr = ictx->state->transitions; 910 while (itr->first != -1 && itr->last != -1) { 911 if (ictx->ch >= itr->first && 912 ictx->ch <= itr->last) 913 break; 914 itr++; 915 } 916 if (itr->first == -1 || itr->last == -1) { 917 /* No transition? Eh? */ 918 fatalx("no transition from state"); 919 } 920 } 921 state = ictx->state; 922 923 /* 924 * Any state except print stops the current collection. This is 925 * an optimization to avoid checking if the attributes have 926 * changed for every character. It will stop unnecessarily for 927 * sequences that don't make a terminal change, but they should 928 * be the minority. 929 */ 930 if (itr->handler != input_print) 931 screen_write_collect_end(sctx); 932 933 /* 934 * Execute the handler, if any. Don't switch state if it 935 * returns non-zero. 936 */ 937 if (itr->handler != NULL && itr->handler(ictx) != 0) 938 continue; 939 940 /* And switch state, if necessary. */ 941 if (itr->state != NULL) 942 input_set_state(ictx, itr); 943 944 /* If not in ground state, save input. */ 945 if (ictx->state != &input_state_ground) 946 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 947 } 948 } 949 950 /* Parse input from pane. */ 951 void 952 input_parse_pane(struct window_pane *wp) 953 { 954 void *new_data; 955 size_t new_size; 956 957 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 958 input_parse_buffer(wp, new_data, new_size); 959 window_pane_update_used_data(wp, &wp->offset, new_size); 960 } 961 962 /* Parse given input. */ 963 void 964 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 965 { 966 struct input_ctx *ictx = wp->ictx; 967 struct screen_write_ctx *sctx = &ictx->ctx; 968 969 if (len == 0) 970 return; 971 972 window_update_activity(wp->window); 973 wp->flags |= PANE_CHANGED; 974 975 /* Flag new input while in a mode. */ 976 if (!TAILQ_EMPTY(&wp->modes)) 977 wp->flags |= PANE_UNSEENCHANGES; 978 979 /* NULL wp if there is a mode set as don't want to update the tty. */ 980 if (TAILQ_EMPTY(&wp->modes)) 981 screen_write_start_pane(sctx, wp, &wp->base); 982 else 983 screen_write_start(sctx, &wp->base); 984 985 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 986 ictx->state->name, len, (int)len, buf); 987 988 input_parse(ictx, buf, len); 989 screen_write_stop(sctx); 990 } 991 992 /* Parse given input for screen. */ 993 void 994 input_parse_screen(struct input_ctx *ictx, struct screen *s, 995 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 996 { 997 struct screen_write_ctx *sctx = &ictx->ctx; 998 999 if (len == 0) 1000 return; 1001 1002 screen_write_start_callback(sctx, s, cb, arg); 1003 input_parse(ictx, buf, len); 1004 screen_write_stop(sctx); 1005 } 1006 1007 /* Split the parameter list (if any). */ 1008 static int 1009 input_split(struct input_ctx *ictx) 1010 { 1011 const char *errstr; 1012 char *ptr, *out; 1013 struct input_param *ip; 1014 u_int i; 1015 1016 for (i = 0; i < ictx->param_list_len; i++) { 1017 if (ictx->param_list[i].type == INPUT_STRING) 1018 free(ictx->param_list[i].str); 1019 } 1020 ictx->param_list_len = 0; 1021 1022 if (ictx->param_len == 0) 1023 return (0); 1024 ip = &ictx->param_list[0]; 1025 1026 ptr = ictx->param_buf; 1027 while ((out = strsep(&ptr, ";")) != NULL) { 1028 if (*out == '\0') 1029 ip->type = INPUT_MISSING; 1030 else { 1031 if (strchr(out, ':') != NULL) { 1032 ip->type = INPUT_STRING; 1033 ip->str = xstrdup(out); 1034 } else { 1035 ip->type = INPUT_NUMBER; 1036 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1037 if (errstr != NULL) 1038 return (-1); 1039 } 1040 } 1041 ip = &ictx->param_list[++ictx->param_list_len]; 1042 if (ictx->param_list_len == nitems(ictx->param_list)) 1043 return (-1); 1044 } 1045 1046 for (i = 0; i < ictx->param_list_len; i++) { 1047 ip = &ictx->param_list[i]; 1048 if (ip->type == INPUT_MISSING) 1049 log_debug("parameter %u: missing", i); 1050 else if (ip->type == INPUT_STRING) 1051 log_debug("parameter %u: string %s", i, ip->str); 1052 else if (ip->type == INPUT_NUMBER) 1053 log_debug("parameter %u: number %d", i, ip->num); 1054 } 1055 1056 return (0); 1057 } 1058 1059 /* Get an argument or return default value. */ 1060 static int 1061 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1062 { 1063 struct input_param *ip; 1064 int retval; 1065 1066 if (validx >= ictx->param_list_len) 1067 return (defval); 1068 ip = &ictx->param_list[validx]; 1069 if (ip->type == INPUT_MISSING) 1070 return (defval); 1071 if (ip->type == INPUT_STRING) 1072 return (-1); 1073 retval = ip->num; 1074 if (retval < minval) 1075 return (minval); 1076 return (retval); 1077 } 1078 1079 /* Reply to terminal query. */ 1080 static void 1081 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1082 { 1083 struct bufferevent *bev = ictx->event; 1084 va_list ap; 1085 char *reply; 1086 1087 if (bev == NULL) 1088 return; 1089 1090 va_start(ap, fmt); 1091 xvasprintf(&reply, fmt, ap); 1092 va_end(ap); 1093 1094 log_debug("%s: %s", __func__, reply); 1095 bufferevent_write(bev, reply, strlen(reply)); 1096 free(reply); 1097 } 1098 1099 /* Clear saved state. */ 1100 static void 1101 input_clear(struct input_ctx *ictx) 1102 { 1103 event_del(&ictx->timer); 1104 1105 *ictx->interm_buf = '\0'; 1106 ictx->interm_len = 0; 1107 1108 *ictx->param_buf = '\0'; 1109 ictx->param_len = 0; 1110 1111 *ictx->input_buf = '\0'; 1112 ictx->input_len = 0; 1113 1114 ictx->input_end = INPUT_END_ST; 1115 1116 ictx->flags &= ~INPUT_DISCARD; 1117 } 1118 1119 /* Reset for ground state. */ 1120 static void 1121 input_ground(struct input_ctx *ictx) 1122 { 1123 event_del(&ictx->timer); 1124 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1125 1126 if (ictx->input_space > INPUT_BUF_START) { 1127 ictx->input_space = INPUT_BUF_START; 1128 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1129 } 1130 } 1131 1132 /* Output this character to the screen. */ 1133 static int 1134 input_print(struct input_ctx *ictx) 1135 { 1136 struct screen_write_ctx *sctx = &ictx->ctx; 1137 int set; 1138 1139 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1140 1141 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1142 if (set == 1) 1143 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1144 else 1145 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1146 1147 utf8_set(&ictx->cell.cell.data, ictx->ch); 1148 screen_write_collect_add(sctx, &ictx->cell.cell); 1149 ictx->last = ictx->ch; 1150 1151 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1152 1153 return (0); 1154 } 1155 1156 /* Collect intermediate string. */ 1157 static int 1158 input_intermediate(struct input_ctx *ictx) 1159 { 1160 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1161 ictx->flags |= INPUT_DISCARD; 1162 else { 1163 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1164 ictx->interm_buf[ictx->interm_len] = '\0'; 1165 } 1166 1167 return (0); 1168 } 1169 1170 /* Collect parameter string. */ 1171 static int 1172 input_parameter(struct input_ctx *ictx) 1173 { 1174 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1175 ictx->flags |= INPUT_DISCARD; 1176 else { 1177 ictx->param_buf[ictx->param_len++] = ictx->ch; 1178 ictx->param_buf[ictx->param_len] = '\0'; 1179 } 1180 1181 return (0); 1182 } 1183 1184 /* Collect input string. */ 1185 static int 1186 input_input(struct input_ctx *ictx) 1187 { 1188 size_t available; 1189 1190 available = ictx->input_space; 1191 while (ictx->input_len + 1 >= available) { 1192 available *= 2; 1193 if (available > INPUT_BUF_LIMIT) { 1194 ictx->flags |= INPUT_DISCARD; 1195 return (0); 1196 } 1197 ictx->input_buf = xrealloc(ictx->input_buf, available); 1198 ictx->input_space = available; 1199 } 1200 ictx->input_buf[ictx->input_len++] = ictx->ch; 1201 ictx->input_buf[ictx->input_len] = '\0'; 1202 1203 return (0); 1204 } 1205 1206 /* Execute C0 control sequence. */ 1207 static int 1208 input_c0_dispatch(struct input_ctx *ictx) 1209 { 1210 struct screen_write_ctx *sctx = &ictx->ctx; 1211 struct window_pane *wp = ictx->wp; 1212 struct screen *s = sctx->s; 1213 1214 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1215 1216 log_debug("%s: '%c'", __func__, ictx->ch); 1217 1218 switch (ictx->ch) { 1219 case '\000': /* NUL */ 1220 break; 1221 case '\007': /* BEL */ 1222 if (wp != NULL) 1223 alerts_queue(wp->window, WINDOW_BELL); 1224 break; 1225 case '\010': /* BS */ 1226 screen_write_backspace(sctx); 1227 break; 1228 case '\011': /* HT */ 1229 /* Don't tab beyond the end of the line. */ 1230 if (s->cx >= screen_size_x(s) - 1) 1231 break; 1232 1233 /* Find the next tab point, or use the last column if none. */ 1234 do { 1235 s->cx++; 1236 if (bit_test(s->tabs, s->cx)) 1237 break; 1238 } while (s->cx < screen_size_x(s) - 1); 1239 break; 1240 case '\012': /* LF */ 1241 case '\013': /* VT */ 1242 case '\014': /* FF */ 1243 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1244 if (s->mode & MODE_CRLF) 1245 screen_write_carriagereturn(sctx); 1246 break; 1247 case '\015': /* CR */ 1248 screen_write_carriagereturn(sctx); 1249 break; 1250 case '\016': /* SO */ 1251 ictx->cell.set = 1; 1252 break; 1253 case '\017': /* SI */ 1254 ictx->cell.set = 0; 1255 break; 1256 default: 1257 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1258 break; 1259 } 1260 1261 ictx->last = -1; 1262 return (0); 1263 } 1264 1265 /* Execute escape sequence. */ 1266 static int 1267 input_esc_dispatch(struct input_ctx *ictx) 1268 { 1269 struct screen_write_ctx *sctx = &ictx->ctx; 1270 struct screen *s = sctx->s; 1271 struct input_table_entry *entry; 1272 1273 if (ictx->flags & INPUT_DISCARD) 1274 return (0); 1275 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1276 1277 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1278 sizeof input_esc_table[0], input_table_compare); 1279 if (entry == NULL) { 1280 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1281 return (0); 1282 } 1283 1284 switch (entry->type) { 1285 case INPUT_ESC_RIS: 1286 colour_palette_clear(ictx->palette); 1287 input_reset_cell(ictx); 1288 screen_write_reset(sctx); 1289 screen_write_fullredraw(sctx); 1290 break; 1291 case INPUT_ESC_IND: 1292 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1293 break; 1294 case INPUT_ESC_NEL: 1295 screen_write_carriagereturn(sctx); 1296 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1297 break; 1298 case INPUT_ESC_HTS: 1299 if (s->cx < screen_size_x(s)) 1300 bit_set(s->tabs, s->cx); 1301 break; 1302 case INPUT_ESC_RI: 1303 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1304 break; 1305 case INPUT_ESC_DECKPAM: 1306 screen_write_mode_set(sctx, MODE_KKEYPAD); 1307 break; 1308 case INPUT_ESC_DECKPNM: 1309 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1310 break; 1311 case INPUT_ESC_DECSC: 1312 input_save_state(ictx); 1313 break; 1314 case INPUT_ESC_DECRC: 1315 input_restore_state(ictx); 1316 break; 1317 case INPUT_ESC_DECALN: 1318 screen_write_alignmenttest(sctx); 1319 break; 1320 case INPUT_ESC_SCSG0_ON: 1321 ictx->cell.g0set = 1; 1322 break; 1323 case INPUT_ESC_SCSG0_OFF: 1324 ictx->cell.g0set = 0; 1325 break; 1326 case INPUT_ESC_SCSG1_ON: 1327 ictx->cell.g1set = 1; 1328 break; 1329 case INPUT_ESC_SCSG1_OFF: 1330 ictx->cell.g1set = 0; 1331 break; 1332 case INPUT_ESC_ST: 1333 /* ST terminates OSC but the state transition already did it. */ 1334 break; 1335 } 1336 1337 ictx->last = -1; 1338 return (0); 1339 } 1340 1341 /* Execute control sequence. */ 1342 static int 1343 input_csi_dispatch(struct input_ctx *ictx) 1344 { 1345 struct screen_write_ctx *sctx = &ictx->ctx; 1346 struct screen *s = sctx->s; 1347 struct input_table_entry *entry; 1348 int i, n, m; 1349 u_int cx, bg = ictx->cell.cell.bg; 1350 1351 if (ictx->flags & INPUT_DISCARD) 1352 return (0); 1353 1354 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch, 1355 ictx->interm_buf, ictx->param_buf); 1356 1357 if (input_split(ictx) != 0) 1358 return (0); 1359 1360 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1361 sizeof input_csi_table[0], input_table_compare); 1362 if (entry == NULL) { 1363 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1364 return (0); 1365 } 1366 1367 switch (entry->type) { 1368 case INPUT_CSI_CBT: 1369 /* Find the previous tab point, n times. */ 1370 cx = s->cx; 1371 if (cx > screen_size_x(s) - 1) 1372 cx = screen_size_x(s) - 1; 1373 n = input_get(ictx, 0, 1, 1); 1374 if (n == -1) 1375 break; 1376 while (cx > 0 && n-- > 0) { 1377 do 1378 cx--; 1379 while (cx > 0 && !bit_test(s->tabs, cx)); 1380 } 1381 s->cx = cx; 1382 break; 1383 case INPUT_CSI_CUB: 1384 n = input_get(ictx, 0, 1, 1); 1385 if (n != -1) 1386 screen_write_cursorleft(sctx, n); 1387 break; 1388 case INPUT_CSI_CUD: 1389 n = input_get(ictx, 0, 1, 1); 1390 if (n != -1) 1391 screen_write_cursordown(sctx, n); 1392 break; 1393 case INPUT_CSI_CUF: 1394 n = input_get(ictx, 0, 1, 1); 1395 if (n != -1) 1396 screen_write_cursorright(sctx, n); 1397 break; 1398 case INPUT_CSI_CUP: 1399 n = input_get(ictx, 0, 1, 1); 1400 m = input_get(ictx, 1, 1, 1); 1401 if (n != -1 && m != -1) 1402 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1403 break; 1404 case INPUT_CSI_MODSET: 1405 n = input_get(ictx, 0, 0, 0); 1406 m = input_get(ictx, 1, 0, 0); 1407 if (options_get_number(global_options, "extended-keys") == 2) 1408 break; 1409 if (n == 0 || (n == 4 && m == 0)) 1410 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1411 else if (n == 4 && (m == 1 || m == 2)) 1412 screen_write_mode_set(sctx, MODE_KEXTENDED); 1413 break; 1414 case INPUT_CSI_MODOFF: 1415 n = input_get(ictx, 0, 0, 0); 1416 if (n == 4) 1417 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1418 break; 1419 case INPUT_CSI_WINOPS: 1420 input_csi_dispatch_winops(ictx); 1421 break; 1422 case INPUT_CSI_CUU: 1423 n = input_get(ictx, 0, 1, 1); 1424 if (n != -1) 1425 screen_write_cursorup(sctx, n); 1426 break; 1427 case INPUT_CSI_CNL: 1428 n = input_get(ictx, 0, 1, 1); 1429 if (n != -1) { 1430 screen_write_carriagereturn(sctx); 1431 screen_write_cursordown(sctx, n); 1432 } 1433 break; 1434 case INPUT_CSI_CPL: 1435 n = input_get(ictx, 0, 1, 1); 1436 if (n != -1) { 1437 screen_write_carriagereturn(sctx); 1438 screen_write_cursorup(sctx, n); 1439 } 1440 break; 1441 case INPUT_CSI_DA: 1442 switch (input_get(ictx, 0, 0, 0)) { 1443 case -1: 1444 break; 1445 case 0: 1446 input_reply(ictx, "\033[?1;2c"); 1447 break; 1448 default: 1449 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1450 break; 1451 } 1452 break; 1453 case INPUT_CSI_DA_TWO: 1454 switch (input_get(ictx, 0, 0, 0)) { 1455 case -1: 1456 break; 1457 case 0: 1458 input_reply(ictx, "\033[>84;0;0c"); 1459 break; 1460 default: 1461 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1462 break; 1463 } 1464 break; 1465 case INPUT_CSI_ECH: 1466 n = input_get(ictx, 0, 1, 1); 1467 if (n != -1) 1468 screen_write_clearcharacter(sctx, n, bg); 1469 break; 1470 case INPUT_CSI_DCH: 1471 n = input_get(ictx, 0, 1, 1); 1472 if (n != -1) 1473 screen_write_deletecharacter(sctx, n, bg); 1474 break; 1475 case INPUT_CSI_DECSTBM: 1476 n = input_get(ictx, 0, 1, 1); 1477 m = input_get(ictx, 1, 1, screen_size_y(s)); 1478 if (n != -1 && m != -1) 1479 screen_write_scrollregion(sctx, n - 1, m - 1); 1480 break; 1481 case INPUT_CSI_DL: 1482 n = input_get(ictx, 0, 1, 1); 1483 if (n != -1) 1484 screen_write_deleteline(sctx, n, bg); 1485 break; 1486 case INPUT_CSI_DSR: 1487 switch (input_get(ictx, 0, 0, 0)) { 1488 case -1: 1489 break; 1490 case 5: 1491 input_reply(ictx, "\033[0n"); 1492 break; 1493 case 6: 1494 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1495 break; 1496 default: 1497 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1498 break; 1499 } 1500 break; 1501 case INPUT_CSI_ED: 1502 switch (input_get(ictx, 0, 0, 0)) { 1503 case -1: 1504 break; 1505 case 0: 1506 screen_write_clearendofscreen(sctx, bg); 1507 break; 1508 case 1: 1509 screen_write_clearstartofscreen(sctx, bg); 1510 break; 1511 case 2: 1512 screen_write_clearscreen(sctx, bg); 1513 break; 1514 case 3: 1515 if (input_get(ictx, 1, 0, 0) == 0) { 1516 /* 1517 * Linux console extension to clear history 1518 * (for example before locking the screen). 1519 */ 1520 screen_write_clearhistory(sctx); 1521 } 1522 break; 1523 default: 1524 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1525 break; 1526 } 1527 break; 1528 case INPUT_CSI_EL: 1529 switch (input_get(ictx, 0, 0, 0)) { 1530 case -1: 1531 break; 1532 case 0: 1533 screen_write_clearendofline(sctx, bg); 1534 break; 1535 case 1: 1536 screen_write_clearstartofline(sctx, bg); 1537 break; 1538 case 2: 1539 screen_write_clearline(sctx, bg); 1540 break; 1541 default: 1542 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1543 break; 1544 } 1545 break; 1546 case INPUT_CSI_HPA: 1547 n = input_get(ictx, 0, 1, 1); 1548 if (n != -1) 1549 screen_write_cursormove(sctx, n - 1, -1, 1); 1550 break; 1551 case INPUT_CSI_ICH: 1552 n = input_get(ictx, 0, 1, 1); 1553 if (n != -1) 1554 screen_write_insertcharacter(sctx, n, bg); 1555 break; 1556 case INPUT_CSI_IL: 1557 n = input_get(ictx, 0, 1, 1); 1558 if (n != -1) 1559 screen_write_insertline(sctx, n, bg); 1560 break; 1561 case INPUT_CSI_REP: 1562 n = input_get(ictx, 0, 1, 1); 1563 if (n == -1) 1564 break; 1565 1566 m = screen_size_x(s) - s->cx; 1567 if (n > m) 1568 n = m; 1569 1570 if (ictx->last == -1) 1571 break; 1572 ictx->ch = ictx->last; 1573 1574 for (i = 0; i < n; i++) 1575 input_print(ictx); 1576 break; 1577 case INPUT_CSI_RCP: 1578 input_restore_state(ictx); 1579 break; 1580 case INPUT_CSI_RM: 1581 input_csi_dispatch_rm(ictx); 1582 break; 1583 case INPUT_CSI_RM_PRIVATE: 1584 input_csi_dispatch_rm_private(ictx); 1585 break; 1586 case INPUT_CSI_SCP: 1587 input_save_state(ictx); 1588 break; 1589 case INPUT_CSI_SGR: 1590 input_csi_dispatch_sgr(ictx); 1591 break; 1592 case INPUT_CSI_SM: 1593 input_csi_dispatch_sm(ictx); 1594 break; 1595 case INPUT_CSI_SM_PRIVATE: 1596 input_csi_dispatch_sm_private(ictx); 1597 break; 1598 case INPUT_CSI_SU: 1599 n = input_get(ictx, 0, 1, 1); 1600 if (n != -1) 1601 screen_write_scrollup(sctx, n, bg); 1602 break; 1603 case INPUT_CSI_SD: 1604 n = input_get(ictx, 0, 1, 1); 1605 if (n != -1) 1606 screen_write_scrolldown(sctx, n, bg); 1607 break; 1608 case INPUT_CSI_TBC: 1609 switch (input_get(ictx, 0, 0, 0)) { 1610 case -1: 1611 break; 1612 case 0: 1613 if (s->cx < screen_size_x(s)) 1614 bit_clear(s->tabs, s->cx); 1615 break; 1616 case 3: 1617 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1618 break; 1619 default: 1620 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1621 break; 1622 } 1623 break; 1624 case INPUT_CSI_VPA: 1625 n = input_get(ictx, 0, 1, 1); 1626 if (n != -1) 1627 screen_write_cursormove(sctx, -1, n - 1, 1); 1628 break; 1629 case INPUT_CSI_DECSCUSR: 1630 n = input_get(ictx, 0, 0, 0); 1631 if (n != -1) 1632 screen_set_cursor_style(n, &s->cstyle, &s->mode); 1633 break; 1634 case INPUT_CSI_XDA: 1635 n = input_get(ictx, 0, 0, 0); 1636 if (n == 0) 1637 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1638 break; 1639 1640 } 1641 1642 ictx->last = -1; 1643 return (0); 1644 } 1645 1646 /* Handle CSI RM. */ 1647 static void 1648 input_csi_dispatch_rm(struct input_ctx *ictx) 1649 { 1650 struct screen_write_ctx *sctx = &ictx->ctx; 1651 u_int i; 1652 1653 for (i = 0; i < ictx->param_list_len; i++) { 1654 switch (input_get(ictx, i, 0, -1)) { 1655 case -1: 1656 break; 1657 case 4: /* IRM */ 1658 screen_write_mode_clear(sctx, MODE_INSERT); 1659 break; 1660 case 34: 1661 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE); 1662 break; 1663 default: 1664 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1665 break; 1666 } 1667 } 1668 } 1669 1670 /* Handle CSI private RM. */ 1671 static void 1672 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1673 { 1674 struct screen_write_ctx *sctx = &ictx->ctx; 1675 struct grid_cell *gc = &ictx->cell.cell; 1676 u_int i; 1677 1678 for (i = 0; i < ictx->param_list_len; i++) { 1679 switch (input_get(ictx, i, 0, -1)) { 1680 case -1: 1681 break; 1682 case 1: /* DECCKM */ 1683 screen_write_mode_clear(sctx, MODE_KCURSOR); 1684 break; 1685 case 3: /* DECCOLM */ 1686 screen_write_cursormove(sctx, 0, 0, 1); 1687 screen_write_clearscreen(sctx, gc->bg); 1688 break; 1689 case 6: /* DECOM */ 1690 screen_write_mode_clear(sctx, MODE_ORIGIN); 1691 screen_write_cursormove(sctx, 0, 0, 1); 1692 break; 1693 case 7: /* DECAWM */ 1694 screen_write_mode_clear(sctx, MODE_WRAP); 1695 break; 1696 case 12: 1697 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING); 1698 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1699 break; 1700 case 25: /* TCEM */ 1701 screen_write_mode_clear(sctx, MODE_CURSOR); 1702 break; 1703 case 1000: 1704 case 1001: 1705 case 1002: 1706 case 1003: 1707 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1708 break; 1709 case 1004: 1710 screen_write_mode_clear(sctx, MODE_FOCUSON); 1711 break; 1712 case 1005: 1713 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1714 break; 1715 case 1006: 1716 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1717 break; 1718 case 47: 1719 case 1047: 1720 screen_write_alternateoff(sctx, gc, 0); 1721 break; 1722 case 1049: 1723 screen_write_alternateoff(sctx, gc, 1); 1724 break; 1725 case 2004: 1726 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1727 break; 1728 default: 1729 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1730 break; 1731 } 1732 } 1733 } 1734 1735 /* Handle CSI SM. */ 1736 static void 1737 input_csi_dispatch_sm(struct input_ctx *ictx) 1738 { 1739 struct screen_write_ctx *sctx = &ictx->ctx; 1740 u_int i; 1741 1742 for (i = 0; i < ictx->param_list_len; i++) { 1743 switch (input_get(ictx, i, 0, -1)) { 1744 case -1: 1745 break; 1746 case 4: /* IRM */ 1747 screen_write_mode_set(sctx, MODE_INSERT); 1748 break; 1749 case 34: 1750 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE); 1751 break; 1752 default: 1753 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1754 break; 1755 } 1756 } 1757 } 1758 1759 /* Handle CSI private SM. */ 1760 static void 1761 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1762 { 1763 struct screen_write_ctx *sctx = &ictx->ctx; 1764 struct grid_cell *gc = &ictx->cell.cell; 1765 u_int i; 1766 1767 for (i = 0; i < ictx->param_list_len; i++) { 1768 switch (input_get(ictx, i, 0, -1)) { 1769 case -1: 1770 break; 1771 case 1: /* DECCKM */ 1772 screen_write_mode_set(sctx, MODE_KCURSOR); 1773 break; 1774 case 3: /* DECCOLM */ 1775 screen_write_cursormove(sctx, 0, 0, 1); 1776 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1777 break; 1778 case 6: /* DECOM */ 1779 screen_write_mode_set(sctx, MODE_ORIGIN); 1780 screen_write_cursormove(sctx, 0, 0, 1); 1781 break; 1782 case 7: /* DECAWM */ 1783 screen_write_mode_set(sctx, MODE_WRAP); 1784 break; 1785 case 12: 1786 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING); 1787 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1788 break; 1789 case 25: /* TCEM */ 1790 screen_write_mode_set(sctx, MODE_CURSOR); 1791 break; 1792 case 1000: 1793 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1794 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1795 break; 1796 case 1002: 1797 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1798 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1799 break; 1800 case 1003: 1801 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1802 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1803 break; 1804 case 1004: 1805 screen_write_mode_set(sctx, MODE_FOCUSON); 1806 break; 1807 case 1005: 1808 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1809 break; 1810 case 1006: 1811 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1812 break; 1813 case 47: 1814 case 1047: 1815 screen_write_alternateon(sctx, gc, 0); 1816 break; 1817 case 1049: 1818 screen_write_alternateon(sctx, gc, 1); 1819 break; 1820 case 2004: 1821 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1822 break; 1823 default: 1824 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1825 break; 1826 } 1827 } 1828 } 1829 1830 /* Handle CSI window operations. */ 1831 static void 1832 input_csi_dispatch_winops(struct input_ctx *ictx) 1833 { 1834 struct screen_write_ctx *sctx = &ictx->ctx; 1835 struct screen *s = sctx->s; 1836 struct window_pane *wp = ictx->wp; 1837 u_int x = screen_size_x(s), y = screen_size_y(s); 1838 int n, m; 1839 1840 m = 0; 1841 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1842 switch (n) { 1843 case 1: 1844 case 2: 1845 case 5: 1846 case 6: 1847 case 7: 1848 case 11: 1849 case 13: 1850 case 14: 1851 case 19: 1852 case 20: 1853 case 21: 1854 case 24: 1855 break; 1856 case 3: 1857 case 4: 1858 case 8: 1859 m++; 1860 if (input_get(ictx, m, 0, -1) == -1) 1861 return; 1862 /* FALLTHROUGH */ 1863 case 9: 1864 case 10: 1865 m++; 1866 if (input_get(ictx, m, 0, -1) == -1) 1867 return; 1868 break; 1869 case 22: 1870 m++; 1871 switch (input_get(ictx, m, 0, -1)) { 1872 case -1: 1873 return; 1874 case 0: 1875 case 2: 1876 screen_push_title(sctx->s); 1877 break; 1878 } 1879 break; 1880 case 23: 1881 m++; 1882 switch (input_get(ictx, m, 0, -1)) { 1883 case -1: 1884 return; 1885 case 0: 1886 case 2: 1887 screen_pop_title(sctx->s); 1888 if (wp == NULL) 1889 break; 1890 notify_pane("pane-title-changed", wp); 1891 server_redraw_window_borders(wp->window); 1892 server_status_window(wp->window); 1893 break; 1894 } 1895 break; 1896 case 18: 1897 input_reply(ictx, "\033[8;%u;%ut", y, x); 1898 break; 1899 default: 1900 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1901 break; 1902 } 1903 m++; 1904 } 1905 } 1906 1907 /* Helper for 256 colour SGR. */ 1908 static int 1909 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1910 { 1911 struct grid_cell *gc = &ictx->cell.cell; 1912 1913 if (c == -1 || c > 255) { 1914 if (fgbg == 38) 1915 gc->fg = 8; 1916 else if (fgbg == 48) 1917 gc->bg = 8; 1918 } else { 1919 if (fgbg == 38) 1920 gc->fg = c | COLOUR_FLAG_256; 1921 else if (fgbg == 48) 1922 gc->bg = c | COLOUR_FLAG_256; 1923 else if (fgbg == 58) 1924 gc->us = c | COLOUR_FLAG_256; 1925 } 1926 return (1); 1927 } 1928 1929 /* Handle CSI SGR for 256 colours. */ 1930 static void 1931 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1932 { 1933 int c; 1934 1935 c = input_get(ictx, (*i) + 1, 0, -1); 1936 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1937 (*i)++; 1938 } 1939 1940 /* Helper for RGB colour SGR. */ 1941 static int 1942 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1943 int b) 1944 { 1945 struct grid_cell *gc = &ictx->cell.cell; 1946 1947 if (r == -1 || r > 255) 1948 return (0); 1949 if (g == -1 || g > 255) 1950 return (0); 1951 if (b == -1 || b > 255) 1952 return (0); 1953 1954 if (fgbg == 38) 1955 gc->fg = colour_join_rgb(r, g, b); 1956 else if (fgbg == 48) 1957 gc->bg = colour_join_rgb(r, g, b); 1958 else if (fgbg == 58) 1959 gc->us = colour_join_rgb(r, g, b); 1960 return (1); 1961 } 1962 1963 /* Handle CSI SGR for RGB colours. */ 1964 static void 1965 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1966 { 1967 int r, g, b; 1968 1969 r = input_get(ictx, (*i) + 1, 0, -1); 1970 g = input_get(ictx, (*i) + 2, 0, -1); 1971 b = input_get(ictx, (*i) + 3, 0, -1); 1972 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1973 (*i) += 3; 1974 } 1975 1976 /* Handle CSI SGR with a ISO parameter. */ 1977 static void 1978 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1979 { 1980 struct grid_cell *gc = &ictx->cell.cell; 1981 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1982 int p[8]; 1983 u_int n; 1984 const char *errstr; 1985 1986 for (n = 0; n < nitems(p); n++) 1987 p[n] = -1; 1988 n = 0; 1989 1990 ptr = copy = xstrdup(s); 1991 while ((out = strsep(&ptr, ":")) != NULL) { 1992 if (*out != '\0') { 1993 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1994 if (errstr != NULL || n == nitems(p)) { 1995 free(copy); 1996 return; 1997 } 1998 } else { 1999 n++; 2000 if (n == nitems(p)) { 2001 free(copy); 2002 return; 2003 } 2004 } 2005 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 2006 } 2007 free(copy); 2008 2009 if (n == 0) 2010 return; 2011 if (p[0] == 4) { 2012 if (n != 2) 2013 return; 2014 switch (p[1]) { 2015 case 0: 2016 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2017 break; 2018 case 1: 2019 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2020 gc->attr |= GRID_ATTR_UNDERSCORE; 2021 break; 2022 case 2: 2023 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2024 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2025 break; 2026 case 3: 2027 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2028 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2029 break; 2030 case 4: 2031 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2032 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2033 break; 2034 case 5: 2035 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2036 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2037 break; 2038 } 2039 return; 2040 } 2041 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2042 return; 2043 switch (p[1]) { 2044 case 2: 2045 if (n < 3) 2046 break; 2047 if (n == 5) 2048 i = 2; 2049 else 2050 i = 3; 2051 if (n < i + 3) 2052 break; 2053 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2054 p[i + 2]); 2055 break; 2056 case 5: 2057 if (n < 3) 2058 break; 2059 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2060 break; 2061 } 2062 } 2063 2064 /* Handle CSI SGR. */ 2065 static void 2066 input_csi_dispatch_sgr(struct input_ctx *ictx) 2067 { 2068 struct grid_cell *gc = &ictx->cell.cell; 2069 u_int i, link; 2070 int n; 2071 2072 if (ictx->param_list_len == 0) { 2073 memcpy(gc, &grid_default_cell, sizeof *gc); 2074 return; 2075 } 2076 2077 for (i = 0; i < ictx->param_list_len; i++) { 2078 if (ictx->param_list[i].type == INPUT_STRING) { 2079 input_csi_dispatch_sgr_colon(ictx, i); 2080 continue; 2081 } 2082 n = input_get(ictx, i, 0, 0); 2083 if (n == -1) 2084 continue; 2085 2086 if (n == 38 || n == 48 || n == 58) { 2087 i++; 2088 switch (input_get(ictx, i, 0, -1)) { 2089 case 2: 2090 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2091 break; 2092 case 5: 2093 input_csi_dispatch_sgr_256(ictx, n, &i); 2094 break; 2095 } 2096 continue; 2097 } 2098 2099 switch (n) { 2100 case 0: 2101 link = gc->link; 2102 memcpy(gc, &grid_default_cell, sizeof *gc); 2103 gc->link = link; 2104 break; 2105 case 1: 2106 gc->attr |= GRID_ATTR_BRIGHT; 2107 break; 2108 case 2: 2109 gc->attr |= GRID_ATTR_DIM; 2110 break; 2111 case 3: 2112 gc->attr |= GRID_ATTR_ITALICS; 2113 break; 2114 case 4: 2115 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2116 gc->attr |= GRID_ATTR_UNDERSCORE; 2117 break; 2118 case 5: 2119 case 6: 2120 gc->attr |= GRID_ATTR_BLINK; 2121 break; 2122 case 7: 2123 gc->attr |= GRID_ATTR_REVERSE; 2124 break; 2125 case 8: 2126 gc->attr |= GRID_ATTR_HIDDEN; 2127 break; 2128 case 9: 2129 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2130 break; 2131 case 21: 2132 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2133 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2134 break; 2135 case 22: 2136 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2137 break; 2138 case 23: 2139 gc->attr &= ~GRID_ATTR_ITALICS; 2140 break; 2141 case 24: 2142 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2143 break; 2144 case 25: 2145 gc->attr &= ~GRID_ATTR_BLINK; 2146 break; 2147 case 27: 2148 gc->attr &= ~GRID_ATTR_REVERSE; 2149 break; 2150 case 28: 2151 gc->attr &= ~GRID_ATTR_HIDDEN; 2152 break; 2153 case 29: 2154 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2155 break; 2156 case 30: 2157 case 31: 2158 case 32: 2159 case 33: 2160 case 34: 2161 case 35: 2162 case 36: 2163 case 37: 2164 gc->fg = n - 30; 2165 break; 2166 case 39: 2167 gc->fg = 8; 2168 break; 2169 case 40: 2170 case 41: 2171 case 42: 2172 case 43: 2173 case 44: 2174 case 45: 2175 case 46: 2176 case 47: 2177 gc->bg = n - 40; 2178 break; 2179 case 49: 2180 gc->bg = 8; 2181 break; 2182 case 53: 2183 gc->attr |= GRID_ATTR_OVERLINE; 2184 break; 2185 case 55: 2186 gc->attr &= ~GRID_ATTR_OVERLINE; 2187 break; 2188 case 59: 2189 gc->us = 8; 2190 break; 2191 case 90: 2192 case 91: 2193 case 92: 2194 case 93: 2195 case 94: 2196 case 95: 2197 case 96: 2198 case 97: 2199 gc->fg = n; 2200 break; 2201 case 100: 2202 case 101: 2203 case 102: 2204 case 103: 2205 case 104: 2206 case 105: 2207 case 106: 2208 case 107: 2209 gc->bg = n - 10; 2210 break; 2211 } 2212 } 2213 } 2214 2215 /* End of input with BEL. */ 2216 static int 2217 input_end_bel(struct input_ctx *ictx) 2218 { 2219 log_debug("%s", __func__); 2220 2221 ictx->input_end = INPUT_END_BEL; 2222 2223 return (0); 2224 } 2225 2226 /* DCS string started. */ 2227 static void 2228 input_enter_dcs(struct input_ctx *ictx) 2229 { 2230 log_debug("%s", __func__); 2231 2232 input_clear(ictx); 2233 input_start_timer(ictx); 2234 ictx->last = -1; 2235 } 2236 2237 /* DCS terminator (ST) received. */ 2238 static int 2239 input_dcs_dispatch(struct input_ctx *ictx) 2240 { 2241 struct window_pane *wp = ictx->wp; 2242 struct screen_write_ctx *sctx = &ictx->ctx; 2243 u_char *buf = ictx->input_buf; 2244 size_t len = ictx->input_len; 2245 const char prefix[] = "tmux;"; 2246 const u_int prefixlen = (sizeof prefix) - 1; 2247 long long allow_passthrough = 0; 2248 2249 if (wp == NULL) 2250 return (0); 2251 if (ictx->flags & INPUT_DISCARD) { 2252 log_debug("%s: %zu bytes (discard)", __func__, len); 2253 return (0); 2254 } 2255 log_debug("%s: %zu bytes", __func__, len); 2256 2257 allow_passthrough = options_get_number(wp->options, "allow-passthrough"); 2258 if (!allow_passthrough) 2259 return (0); 2260 log_debug("%s: \"%s\"", __func__, buf); 2261 2262 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) { 2263 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen, 2264 allow_passthrough == 2); 2265 } 2266 2267 return (0); 2268 } 2269 2270 /* OSC string started. */ 2271 static void 2272 input_enter_osc(struct input_ctx *ictx) 2273 { 2274 log_debug("%s", __func__); 2275 2276 input_clear(ictx); 2277 input_start_timer(ictx); 2278 ictx->last = -1; 2279 } 2280 2281 /* OSC terminator (ST) received. */ 2282 static void 2283 input_exit_osc(struct input_ctx *ictx) 2284 { 2285 struct screen_write_ctx *sctx = &ictx->ctx; 2286 struct window_pane *wp = ictx->wp; 2287 u_char *p = ictx->input_buf; 2288 u_int option; 2289 2290 if (ictx->flags & INPUT_DISCARD) 2291 return; 2292 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2293 return; 2294 2295 log_debug("%s: \"%s\" (end %s)", __func__, p, 2296 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2297 2298 option = 0; 2299 while (*p >= '0' && *p <= '9') 2300 option = option * 10 + *p++ - '0'; 2301 if (*p != ';' && *p != '\0') 2302 return; 2303 if (*p == ';') 2304 p++; 2305 2306 switch (option) { 2307 case 0: 2308 case 2: 2309 if (screen_set_title(sctx->s, p) && wp != NULL) { 2310 notify_pane("pane-title-changed", wp); 2311 server_redraw_window_borders(wp->window); 2312 server_status_window(wp->window); 2313 } 2314 break; 2315 case 4: 2316 input_osc_4(ictx, p); 2317 break; 2318 case 7: 2319 if (utf8_isvalid(p)) { 2320 screen_set_path(sctx->s, p); 2321 if (wp != NULL) { 2322 server_redraw_window_borders(wp->window); 2323 server_status_window(wp->window); 2324 } 2325 } 2326 break; 2327 case 8: 2328 input_osc_8(ictx, p); 2329 break; 2330 case 10: 2331 input_osc_10(ictx, p); 2332 break; 2333 case 11: 2334 input_osc_11(ictx, p); 2335 break; 2336 case 12: 2337 input_osc_12(ictx, p); 2338 break; 2339 case 52: 2340 input_osc_52(ictx, p); 2341 break; 2342 case 104: 2343 input_osc_104(ictx, p); 2344 break; 2345 case 110: 2346 input_osc_110(ictx, p); 2347 break; 2348 case 111: 2349 input_osc_111(ictx, p); 2350 break; 2351 case 112: 2352 input_osc_112(ictx, p); 2353 break; 2354 case 133: 2355 input_osc_133(ictx, p); 2356 break; 2357 default: 2358 log_debug("%s: unknown '%u'", __func__, option); 2359 break; 2360 } 2361 } 2362 2363 /* APC string started. */ 2364 static void 2365 input_enter_apc(struct input_ctx *ictx) 2366 { 2367 log_debug("%s", __func__); 2368 2369 input_clear(ictx); 2370 input_start_timer(ictx); 2371 ictx->last = -1; 2372 } 2373 2374 /* APC terminator (ST) received. */ 2375 static void 2376 input_exit_apc(struct input_ctx *ictx) 2377 { 2378 struct screen_write_ctx *sctx = &ictx->ctx; 2379 struct window_pane *wp = ictx->wp; 2380 2381 if (ictx->flags & INPUT_DISCARD) 2382 return; 2383 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2384 2385 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2386 notify_pane("pane-title-changed", wp); 2387 server_redraw_window_borders(wp->window); 2388 server_status_window(wp->window); 2389 } 2390 } 2391 2392 /* Rename string started. */ 2393 static void 2394 input_enter_rename(struct input_ctx *ictx) 2395 { 2396 log_debug("%s", __func__); 2397 2398 input_clear(ictx); 2399 input_start_timer(ictx); 2400 ictx->last = -1; 2401 } 2402 2403 /* Rename terminator (ST) received. */ 2404 static void 2405 input_exit_rename(struct input_ctx *ictx) 2406 { 2407 struct window_pane *wp = ictx->wp; 2408 struct window *w; 2409 struct options_entry *o; 2410 2411 if (wp == NULL) 2412 return; 2413 if (ictx->flags & INPUT_DISCARD) 2414 return; 2415 if (!options_get_number(ictx->wp->options, "allow-rename")) 2416 return; 2417 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2418 2419 if (!utf8_isvalid(ictx->input_buf)) 2420 return; 2421 w = wp->window; 2422 2423 if (ictx->input_len == 0) { 2424 o = options_get_only(w->options, "automatic-rename"); 2425 if (o != NULL) 2426 options_remove_or_default(o, -1, NULL); 2427 if (!options_get_number(w->options, "automatic-rename")) 2428 window_set_name(w, ""); 2429 } else { 2430 options_set_number(w->options, "automatic-rename", 0); 2431 window_set_name(w, ictx->input_buf); 2432 } 2433 server_redraw_window_borders(w); 2434 server_status_window(w); 2435 } 2436 2437 /* Open UTF-8 character. */ 2438 static int 2439 input_top_bit_set(struct input_ctx *ictx) 2440 { 2441 struct screen_write_ctx *sctx = &ictx->ctx; 2442 struct utf8_data *ud = &ictx->utf8data; 2443 2444 ictx->last = -1; 2445 2446 if (!ictx->utf8started) { 2447 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2448 return (0); 2449 ictx->utf8started = 1; 2450 return (0); 2451 } 2452 2453 switch (utf8_append(ud, ictx->ch)) { 2454 case UTF8_MORE: 2455 return (0); 2456 case UTF8_ERROR: 2457 ictx->utf8started = 0; 2458 return (0); 2459 case UTF8_DONE: 2460 break; 2461 } 2462 ictx->utf8started = 0; 2463 2464 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2465 (int)ud->size, ud->data, ud->width); 2466 2467 utf8_copy(&ictx->cell.cell.data, ud); 2468 screen_write_collect_add(sctx, &ictx->cell.cell); 2469 2470 return (0); 2471 } 2472 2473 /* Reply to a colour request. */ 2474 static void 2475 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2476 { 2477 u_char r, g, b; 2478 const char *end; 2479 2480 if (c != -1) 2481 c = colour_force_rgb(c); 2482 if (c == -1) 2483 return; 2484 colour_split_rgb(c, &r, &g, &b); 2485 2486 if (ictx->input_end == INPUT_END_BEL) 2487 end = "\007"; 2488 else 2489 end = "\033\\"; 2490 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s", 2491 n, r, r, g, g, b, b, end); 2492 } 2493 2494 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2495 static void 2496 input_osc_4(struct input_ctx *ictx, const char *p) 2497 { 2498 char *copy, *s, *next = NULL; 2499 long idx; 2500 int c, bad = 0, redraw = 0; 2501 2502 copy = s = xstrdup(p); 2503 while (s != NULL && *s != '\0') { 2504 idx = strtol(s, &next, 10); 2505 if (*next++ != ';') { 2506 bad = 1; 2507 break; 2508 } 2509 if (idx < 0 || idx >= 256) { 2510 bad = 1; 2511 break; 2512 } 2513 2514 s = strsep(&next, ";"); 2515 if (strcmp(s, "?") == 0) { 2516 c = colour_palette_get(ictx->palette, idx); 2517 if (c != -1) 2518 input_osc_colour_reply(ictx, 4, c); 2519 continue; 2520 } 2521 if ((c = colour_parseX11(s)) == -1) { 2522 s = next; 2523 continue; 2524 } 2525 if (colour_palette_set(ictx->palette, idx, c)) 2526 redraw = 1; 2527 s = next; 2528 } 2529 if (bad) 2530 log_debug("bad OSC 4: %s", p); 2531 if (redraw) 2532 screen_write_fullredraw(&ictx->ctx); 2533 free(copy); 2534 } 2535 2536 /* Handle the OSC 8 sequence for embedding hyperlinks. */ 2537 static void 2538 input_osc_8(struct input_ctx *ictx, const char *p) 2539 { 2540 struct hyperlinks *hl = ictx->ctx.s->hyperlinks; 2541 struct grid_cell *gc = &ictx->cell.cell; 2542 const char *start, *end, *uri; 2543 char *id = NULL; 2544 2545 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) { 2546 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) { 2547 if (id != NULL) 2548 goto bad; 2549 id = xstrndup(start + 3, end - start - 3); 2550 } 2551 2552 /* The first ; is the end of parameters and start of the URI. */ 2553 if (*end == ';') 2554 break; 2555 } 2556 if (end == NULL || *end != ';') 2557 goto bad; 2558 uri = end + 1; 2559 if (*uri == '\0') { 2560 gc->link = 0; 2561 free(id); 2562 return; 2563 } 2564 gc->link = hyperlinks_put(hl, uri, id); 2565 if (id == NULL) 2566 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link); 2567 else 2568 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link); 2569 free(id); 2570 return; 2571 2572 bad: 2573 log_debug("bad OSC 8 %s", p); 2574 free(id); 2575 } 2576 2577 /* 2578 * Get a client with a foreground for the pane. There isn't much to choose 2579 * between them so just use the first. 2580 */ 2581 static int 2582 input_get_fg_client(struct window_pane *wp) 2583 { 2584 struct window *w = wp->window; 2585 struct client *loop; 2586 2587 TAILQ_FOREACH(loop, &clients, entry) { 2588 if (loop->flags & CLIENT_UNATTACHEDFLAGS) 2589 continue; 2590 if (loop->session == NULL || !session_has(loop->session, w)) 2591 continue; 2592 if (loop->tty.fg == -1) 2593 continue; 2594 return (loop->tty.fg); 2595 } 2596 return (-1); 2597 } 2598 2599 /* Get a client with a background for the pane. */ 2600 static int 2601 input_get_bg_client(struct window_pane *wp) 2602 { 2603 struct window *w = wp->window; 2604 struct client *loop; 2605 2606 TAILQ_FOREACH(loop, &clients, entry) { 2607 if (loop->flags & CLIENT_UNATTACHEDFLAGS) 2608 continue; 2609 if (loop->session == NULL || !session_has(loop->session, w)) 2610 continue; 2611 if (loop->tty.bg == -1) 2612 continue; 2613 return (loop->tty.bg); 2614 } 2615 return (-1); 2616 } 2617 2618 /* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2619 static void 2620 input_osc_10(struct input_ctx *ictx, const char *p) 2621 { 2622 struct window_pane *wp = ictx->wp; 2623 struct grid_cell defaults; 2624 int c; 2625 2626 if (strcmp(p, "?") == 0) { 2627 if (wp == NULL) 2628 return; 2629 tty_default_colours(&defaults, wp); 2630 if (COLOUR_DEFAULT(defaults.fg)) 2631 c = input_get_fg_client(wp); 2632 else 2633 c = defaults.fg; 2634 input_osc_colour_reply(ictx, 10, c); 2635 return; 2636 } 2637 2638 if ((c = colour_parseX11(p)) == -1) { 2639 log_debug("bad OSC 10: %s", p); 2640 return; 2641 } 2642 if (ictx->palette != NULL) { 2643 ictx->palette->fg = c; 2644 if (wp != NULL) 2645 wp->flags |= PANE_STYLECHANGED; 2646 screen_write_fullredraw(&ictx->ctx); 2647 } 2648 } 2649 2650 /* Handle the OSC 110 sequence for resetting foreground colour. */ 2651 static void 2652 input_osc_110(struct input_ctx *ictx, const char *p) 2653 { 2654 struct window_pane *wp = ictx->wp; 2655 2656 if (*p != '\0') 2657 return; 2658 if (ictx->palette != NULL) { 2659 ictx->palette->fg = 8; 2660 if (wp != NULL) 2661 wp->flags |= PANE_STYLECHANGED; 2662 screen_write_fullredraw(&ictx->ctx); 2663 } 2664 } 2665 2666 /* Handle the OSC 11 sequence for setting and querying background colour. */ 2667 static void 2668 input_osc_11(struct input_ctx *ictx, const char *p) 2669 { 2670 struct window_pane *wp = ictx->wp; 2671 struct grid_cell defaults; 2672 int c; 2673 2674 if (strcmp(p, "?") == 0) { 2675 if (wp == NULL) 2676 return; 2677 tty_default_colours(&defaults, wp); 2678 if (COLOUR_DEFAULT(defaults.bg)) 2679 c = input_get_bg_client(wp); 2680 else 2681 c = defaults.bg; 2682 input_osc_colour_reply(ictx, 11, c); 2683 return; 2684 } 2685 2686 if ((c = colour_parseX11(p)) == -1) { 2687 log_debug("bad OSC 11: %s", p); 2688 return; 2689 } 2690 if (ictx->palette != NULL) { 2691 ictx->palette->bg = c; 2692 if (wp != NULL) 2693 wp->flags |= PANE_STYLECHANGED; 2694 screen_write_fullredraw(&ictx->ctx); 2695 } 2696 } 2697 2698 /* Handle the OSC 111 sequence for resetting background colour. */ 2699 static void 2700 input_osc_111(struct input_ctx *ictx, const char *p) 2701 { 2702 struct window_pane *wp = ictx->wp; 2703 2704 if (*p != '\0') 2705 return; 2706 if (ictx->palette != NULL) { 2707 ictx->palette->bg = 8; 2708 if (wp != NULL) 2709 wp->flags |= PANE_STYLECHANGED; 2710 screen_write_fullredraw(&ictx->ctx); 2711 } 2712 } 2713 2714 /* Handle the OSC 12 sequence for setting and querying cursor colour. */ 2715 static void 2716 input_osc_12(struct input_ctx *ictx, const char *p) 2717 { 2718 struct window_pane *wp = ictx->wp; 2719 int c; 2720 2721 if (strcmp(p, "?") == 0) { 2722 if (wp != NULL) { 2723 c = ictx->ctx.s->ccolour; 2724 if (c == -1) 2725 c = ictx->ctx.s->default_ccolour; 2726 input_osc_colour_reply(ictx, 12, c); 2727 } 2728 return; 2729 } 2730 2731 if ((c = colour_parseX11(p)) == -1) { 2732 log_debug("bad OSC 12: %s", p); 2733 return; 2734 } 2735 screen_set_cursor_colour(ictx->ctx.s, c); 2736 } 2737 2738 /* Handle the OSC 112 sequence for resetting cursor colour. */ 2739 static void 2740 input_osc_112(struct input_ctx *ictx, const char *p) 2741 { 2742 if (*p == '\0') /* no arguments allowed */ 2743 screen_set_cursor_colour(ictx->ctx.s, -1); 2744 } 2745 2746 /* Handle the OSC 133 sequence. */ 2747 static void 2748 input_osc_133(struct input_ctx *ictx, const char *p) 2749 { 2750 struct grid *gd = ictx->ctx.s->grid; 2751 u_int line = ictx->ctx.s->cy + gd->hsize; 2752 struct grid_line *gl; 2753 2754 if (line > gd->hsize + gd->sy - 1) 2755 return; 2756 gl = grid_get_line(gd, line); 2757 2758 switch (*p) { 2759 case 'A': 2760 gl->flags |= GRID_LINE_START_PROMPT; 2761 break; 2762 case 'C': 2763 gl->flags |= GRID_LINE_START_OUTPUT; 2764 break; 2765 } 2766 } 2767 2768 /* Handle the OSC 52 sequence for setting the clipboard. */ 2769 static void 2770 input_osc_52(struct input_ctx *ictx, const char *p) 2771 { 2772 struct window_pane *wp = ictx->wp; 2773 char *end; 2774 const char *buf = NULL; 2775 size_t len = 0; 2776 u_char *out; 2777 int outlen, state; 2778 struct screen_write_ctx ctx; 2779 struct paste_buffer *pb; 2780 const char* allow = "cpqs01234567"; 2781 char flags[sizeof "cpqs01234567"] = ""; 2782 u_int i, j = 0; 2783 2784 if (wp == NULL) 2785 return; 2786 state = options_get_number(global_options, "set-clipboard"); 2787 if (state != 2) 2788 return; 2789 2790 if ((end = strchr(p, ';')) == NULL) 2791 return; 2792 end++; 2793 if (*end == '\0') 2794 return; 2795 log_debug("%s: %s", __func__, end); 2796 2797 for (i = 0; p + i != end; i++) { 2798 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL) 2799 flags[j++] = p[i]; 2800 } 2801 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags); 2802 2803 if (strcmp(end, "?") == 0) { 2804 if ((pb = paste_get_top(NULL)) != NULL) 2805 buf = paste_buffer_data(pb, &len); 2806 if (ictx->input_end == INPUT_END_BEL) 2807 input_reply_clipboard(ictx->event, buf, len, "\007"); 2808 else 2809 input_reply_clipboard(ictx->event, buf, len, "\033\\"); 2810 return; 2811 } 2812 2813 len = (strlen(end) / 4) * 3; 2814 if (len == 0) 2815 return; 2816 2817 out = xmalloc(len); 2818 if ((outlen = b64_pton(end, out, len)) == -1) { 2819 free(out); 2820 return; 2821 } 2822 2823 screen_write_start_pane(&ctx, wp, NULL); 2824 screen_write_setselection(&ctx, flags, out, outlen); 2825 screen_write_stop(&ctx); 2826 notify_pane("pane-set-clipboard", wp); 2827 2828 paste_add(NULL, out, outlen); 2829 } 2830 2831 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2832 static void 2833 input_osc_104(struct input_ctx *ictx, const char *p) 2834 { 2835 char *copy, *s; 2836 long idx; 2837 int bad = 0, redraw = 0; 2838 2839 if (*p == '\0') { 2840 colour_palette_clear(ictx->palette); 2841 screen_write_fullredraw(&ictx->ctx); 2842 return; 2843 } 2844 2845 copy = s = xstrdup(p); 2846 while (*s != '\0') { 2847 idx = strtol(s, &s, 10); 2848 if (*s != '\0' && *s != ';') { 2849 bad = 1; 2850 break; 2851 } 2852 if (idx < 0 || idx >= 256) { 2853 bad = 1; 2854 break; 2855 } 2856 if (colour_palette_set(ictx->palette, idx, -1)) 2857 redraw = 1; 2858 if (*s == ';') 2859 s++; 2860 } 2861 if (bad) 2862 log_debug("bad OSC 104: %s", p); 2863 if (redraw) 2864 screen_write_fullredraw(&ictx->ctx); 2865 free(copy); 2866 } 2867 2868 void 2869 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len, 2870 const char *end) 2871 { 2872 char *out = NULL; 2873 int outlen = 0; 2874 2875 if (buf != NULL && len != 0) { 2876 if (len >= ((size_t)INT_MAX * 3 / 4) - 1) 2877 return; 2878 outlen = 4 * ((len + 2) / 3) + 1; 2879 out = xmalloc(outlen); 2880 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2881 free(out); 2882 return; 2883 } 2884 } 2885 2886 bufferevent_write(bev, "\033]52;;", 6); 2887 if (outlen != 0) 2888 bufferevent_write(bev, out, outlen); 2889 bufferevent_write(bev, end, strlen(end)); 2890 free(out); 2891 } 2892