input.c revision 1.143
1/* $OpenBSD: input.c,v 1.143 2019/03/12 12:58:40 nicm Exp $ */ 2 3/* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#include <sys/types.h> 20 21#include <netinet/in.h> 22 23#include <resolv.h> 24#include <stdlib.h> 25#include <string.h> 26#include <time.h> 27 28#include "tmux.h" 29 30/* 31 * Based on the description by Paul Williams at: 32 * 33 * https://vt100.net/emu/dec_ansi_parser 34 * 35 * With the following changes: 36 * 37 * - 7-bit only. 38 * 39 * - Support for UTF-8. 40 * 41 * - OSC (but not APC) may be terminated by \007 as well as ST. 42 * 43 * - A state for APC similar to OSC. Some terminals appear to use this to set 44 * the title. 45 * 46 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 47 * pretty stupid but not supporting it is more trouble than it is worth. 48 * 49 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 50 * be passed to the underlying terminals. 51 */ 52 53/* Input parser cell. */ 54struct input_cell { 55 struct grid_cell cell; 56 int set; 57 int g0set; /* 1 if ACS */ 58 int g1set; /* 1 if ACS */ 59}; 60 61/* Input parser argument. */ 62struct input_param { 63 enum { 64 INPUT_MISSING, 65 INPUT_NUMBER, 66 INPUT_STRING 67 } type; 68 union { 69 int num; 70 char *str; 71 }; 72}; 73 74/* Input parser context. */ 75struct input_ctx { 76 struct window_pane *wp; 77 struct screen_write_ctx ctx; 78 79 struct input_cell cell; 80 81 struct input_cell old_cell; 82 u_int old_cx; 83 u_int old_cy; 84 85 u_char interm_buf[4]; 86 size_t interm_len; 87 88 u_char param_buf[64]; 89 size_t param_len; 90 91#define INPUT_BUF_START 32 92#define INPUT_BUF_LIMIT 1048576 93 u_char *input_buf; 94 size_t input_len; 95 size_t input_space; 96 enum { 97 INPUT_END_ST, 98 INPUT_END_BEL 99 } input_end; 100 101 struct input_param param_list[24]; 102 u_int param_list_len; 103 104 struct utf8_data utf8data; 105 int utf8started; 106 107 int ch; 108 int last; 109 110 int flags; 111#define INPUT_DISCARD 0x1 112 113 const struct input_state *state; 114 115 struct event timer; 116 117 /* 118 * All input received since we were last in the ground state. Sent to 119 * control clients on connection. 120 */ 121 struct evbuffer *since_ground; 122}; 123 124/* Helper functions. */ 125struct input_transition; 126static int input_split(struct input_ctx *); 127static int input_get(struct input_ctx *, u_int, int, int); 128static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 129static void input_set_state(struct window_pane *, 130 const struct input_transition *); 131static void input_reset_cell(struct input_ctx *); 132 133static void input_osc_4(struct input_ctx *, const char *); 134static void input_osc_10(struct input_ctx *, const char *); 135static void input_osc_11(struct input_ctx *, const char *); 136static void input_osc_52(struct input_ctx *, const char *); 137static void input_osc_104(struct input_ctx *, const char *); 138 139/* Transition entry/exit handlers. */ 140static void input_clear(struct input_ctx *); 141static void input_ground(struct input_ctx *); 142static void input_enter_dcs(struct input_ctx *); 143static void input_enter_osc(struct input_ctx *); 144static void input_exit_osc(struct input_ctx *); 145static void input_enter_apc(struct input_ctx *); 146static void input_exit_apc(struct input_ctx *); 147static void input_enter_rename(struct input_ctx *); 148static void input_exit_rename(struct input_ctx *); 149 150/* Input state handlers. */ 151static int input_print(struct input_ctx *); 152static int input_intermediate(struct input_ctx *); 153static int input_parameter(struct input_ctx *); 154static int input_input(struct input_ctx *); 155static int input_c0_dispatch(struct input_ctx *); 156static int input_esc_dispatch(struct input_ctx *); 157static int input_csi_dispatch(struct input_ctx *); 158static void input_csi_dispatch_rm(struct input_ctx *); 159static void input_csi_dispatch_rm_private(struct input_ctx *); 160static void input_csi_dispatch_sm(struct input_ctx *); 161static void input_csi_dispatch_sm_private(struct input_ctx *); 162static void input_csi_dispatch_winops(struct input_ctx *); 163static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 164static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 165static void input_csi_dispatch_sgr(struct input_ctx *); 166static int input_dcs_dispatch(struct input_ctx *); 167static int input_top_bit_set(struct input_ctx *); 168static int input_end_bel(struct input_ctx *); 169 170/* Command table comparison function. */ 171static int input_table_compare(const void *, const void *); 172 173/* Command table entry. */ 174struct input_table_entry { 175 int ch; 176 const char *interm; 177 int type; 178}; 179 180/* Escape commands. */ 181enum input_esc_type { 182 INPUT_ESC_DECALN, 183 INPUT_ESC_DECKPAM, 184 INPUT_ESC_DECKPNM, 185 INPUT_ESC_DECRC, 186 INPUT_ESC_DECSC, 187 INPUT_ESC_HTS, 188 INPUT_ESC_IND, 189 INPUT_ESC_NEL, 190 INPUT_ESC_RI, 191 INPUT_ESC_RIS, 192 INPUT_ESC_SCSG0_OFF, 193 INPUT_ESC_SCSG0_ON, 194 INPUT_ESC_SCSG1_OFF, 195 INPUT_ESC_SCSG1_ON, 196 INPUT_ESC_ST, 197}; 198 199/* Escape command table. */ 200static const struct input_table_entry input_esc_table[] = { 201 { '0', "(", INPUT_ESC_SCSG0_ON }, 202 { '0', ")", INPUT_ESC_SCSG1_ON }, 203 { '7', "", INPUT_ESC_DECSC }, 204 { '8', "", INPUT_ESC_DECRC }, 205 { '8', "#", INPUT_ESC_DECALN }, 206 { '=', "", INPUT_ESC_DECKPAM }, 207 { '>', "", INPUT_ESC_DECKPNM }, 208 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 209 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 210 { 'D', "", INPUT_ESC_IND }, 211 { 'E', "", INPUT_ESC_NEL }, 212 { 'H', "", INPUT_ESC_HTS }, 213 { 'M', "", INPUT_ESC_RI }, 214 { '\\', "", INPUT_ESC_ST }, 215 { 'c', "", INPUT_ESC_RIS }, 216}; 217 218/* Control (CSI) commands. */ 219enum input_csi_type { 220 INPUT_CSI_CBT, 221 INPUT_CSI_CNL, 222 INPUT_CSI_CPL, 223 INPUT_CSI_CUB, 224 INPUT_CSI_CUD, 225 INPUT_CSI_CUF, 226 INPUT_CSI_CUP, 227 INPUT_CSI_CUU, 228 INPUT_CSI_DA, 229 INPUT_CSI_DA_TWO, 230 INPUT_CSI_DCH, 231 INPUT_CSI_DECSCUSR, 232 INPUT_CSI_DECSTBM, 233 INPUT_CSI_DL, 234 INPUT_CSI_DSR, 235 INPUT_CSI_ECH, 236 INPUT_CSI_ED, 237 INPUT_CSI_EL, 238 INPUT_CSI_HPA, 239 INPUT_CSI_ICH, 240 INPUT_CSI_IL, 241 INPUT_CSI_RCP, 242 INPUT_CSI_REP, 243 INPUT_CSI_RM, 244 INPUT_CSI_RM_PRIVATE, 245 INPUT_CSI_SCP, 246 INPUT_CSI_SGR, 247 INPUT_CSI_SM, 248 INPUT_CSI_SM_PRIVATE, 249 INPUT_CSI_SU, 250 INPUT_CSI_TBC, 251 INPUT_CSI_VPA, 252 INPUT_CSI_WINOPS, 253}; 254 255/* Control (CSI) command table. */ 256static const struct input_table_entry input_csi_table[] = { 257 { '@', "", INPUT_CSI_ICH }, 258 { 'A', "", INPUT_CSI_CUU }, 259 { 'B', "", INPUT_CSI_CUD }, 260 { 'C', "", INPUT_CSI_CUF }, 261 { 'D', "", INPUT_CSI_CUB }, 262 { 'E', "", INPUT_CSI_CNL }, 263 { 'F', "", INPUT_CSI_CPL }, 264 { 'G', "", INPUT_CSI_HPA }, 265 { 'H', "", INPUT_CSI_CUP }, 266 { 'J', "", INPUT_CSI_ED }, 267 { 'K', "", INPUT_CSI_EL }, 268 { 'L', "", INPUT_CSI_IL }, 269 { 'M', "", INPUT_CSI_DL }, 270 { 'P', "", INPUT_CSI_DCH }, 271 { 'S', "", INPUT_CSI_SU }, 272 { 'X', "", INPUT_CSI_ECH }, 273 { 'Z', "", INPUT_CSI_CBT }, 274 { 'b', "", INPUT_CSI_REP }, 275 { 'c', "", INPUT_CSI_DA }, 276 { 'c', ">", INPUT_CSI_DA_TWO }, 277 { 'd', "", INPUT_CSI_VPA }, 278 { 'f', "", INPUT_CSI_CUP }, 279 { 'g', "", INPUT_CSI_TBC }, 280 { 'h', "", INPUT_CSI_SM }, 281 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 282 { 'l', "", INPUT_CSI_RM }, 283 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 284 { 'm', "", INPUT_CSI_SGR }, 285 { 'n', "", INPUT_CSI_DSR }, 286 { 'q', " ", INPUT_CSI_DECSCUSR }, 287 { 'r', "", INPUT_CSI_DECSTBM }, 288 { 's', "", INPUT_CSI_SCP }, 289 { 't', "", INPUT_CSI_WINOPS }, 290 { 'u', "", INPUT_CSI_RCP }, 291}; 292 293/* Input transition. */ 294struct input_transition { 295 int first; 296 int last; 297 298 int (*handler)(struct input_ctx *); 299 const struct input_state *state; 300}; 301 302/* Input state. */ 303struct input_state { 304 const char *name; 305 void (*enter)(struct input_ctx *); 306 void (*exit)(struct input_ctx *); 307 const struct input_transition *transitions; 308}; 309 310/* State transitions available from all states. */ 311#define INPUT_STATE_ANYWHERE \ 312 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 313 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 314 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 315 316/* Forward declarations of state tables. */ 317static const struct input_transition input_state_ground_table[]; 318static const struct input_transition input_state_esc_enter_table[]; 319static const struct input_transition input_state_esc_intermediate_table[]; 320static const struct input_transition input_state_csi_enter_table[]; 321static const struct input_transition input_state_csi_parameter_table[]; 322static const struct input_transition input_state_csi_intermediate_table[]; 323static const struct input_transition input_state_csi_ignore_table[]; 324static const struct input_transition input_state_dcs_enter_table[]; 325static const struct input_transition input_state_dcs_parameter_table[]; 326static const struct input_transition input_state_dcs_intermediate_table[]; 327static const struct input_transition input_state_dcs_handler_table[]; 328static const struct input_transition input_state_dcs_escape_table[]; 329static const struct input_transition input_state_dcs_ignore_table[]; 330static const struct input_transition input_state_osc_string_table[]; 331static const struct input_transition input_state_apc_string_table[]; 332static const struct input_transition input_state_rename_string_table[]; 333static const struct input_transition input_state_consume_st_table[]; 334 335/* ground state definition. */ 336static const struct input_state input_state_ground = { 337 "ground", 338 input_ground, NULL, 339 input_state_ground_table 340}; 341 342/* esc_enter state definition. */ 343static const struct input_state input_state_esc_enter = { 344 "esc_enter", 345 input_clear, NULL, 346 input_state_esc_enter_table 347}; 348 349/* esc_intermediate state definition. */ 350static const struct input_state input_state_esc_intermediate = { 351 "esc_intermediate", 352 NULL, NULL, 353 input_state_esc_intermediate_table 354}; 355 356/* csi_enter state definition. */ 357static const struct input_state input_state_csi_enter = { 358 "csi_enter", 359 input_clear, NULL, 360 input_state_csi_enter_table 361}; 362 363/* csi_parameter state definition. */ 364static const struct input_state input_state_csi_parameter = { 365 "csi_parameter", 366 NULL, NULL, 367 input_state_csi_parameter_table 368}; 369 370/* csi_intermediate state definition. */ 371static const struct input_state input_state_csi_intermediate = { 372 "csi_intermediate", 373 NULL, NULL, 374 input_state_csi_intermediate_table 375}; 376 377/* csi_ignore state definition. */ 378static const struct input_state input_state_csi_ignore = { 379 "csi_ignore", 380 NULL, NULL, 381 input_state_csi_ignore_table 382}; 383 384/* dcs_enter state definition. */ 385static const struct input_state input_state_dcs_enter = { 386 "dcs_enter", 387 input_enter_dcs, NULL, 388 input_state_dcs_enter_table 389}; 390 391/* dcs_parameter state definition. */ 392static const struct input_state input_state_dcs_parameter = { 393 "dcs_parameter", 394 NULL, NULL, 395 input_state_dcs_parameter_table 396}; 397 398/* dcs_intermediate state definition. */ 399static const struct input_state input_state_dcs_intermediate = { 400 "dcs_intermediate", 401 NULL, NULL, 402 input_state_dcs_intermediate_table 403}; 404 405/* dcs_handler state definition. */ 406static const struct input_state input_state_dcs_handler = { 407 "dcs_handler", 408 NULL, NULL, 409 input_state_dcs_handler_table 410}; 411 412/* dcs_escape state definition. */ 413static const struct input_state input_state_dcs_escape = { 414 "dcs_escape", 415 NULL, NULL, 416 input_state_dcs_escape_table 417}; 418 419/* dcs_ignore state definition. */ 420static const struct input_state input_state_dcs_ignore = { 421 "dcs_ignore", 422 NULL, NULL, 423 input_state_dcs_ignore_table 424}; 425 426/* osc_string state definition. */ 427static const struct input_state input_state_osc_string = { 428 "osc_string", 429 input_enter_osc, input_exit_osc, 430 input_state_osc_string_table 431}; 432 433/* apc_string state definition. */ 434static const struct input_state input_state_apc_string = { 435 "apc_string", 436 input_enter_apc, input_exit_apc, 437 input_state_apc_string_table 438}; 439 440/* rename_string state definition. */ 441static const struct input_state input_state_rename_string = { 442 "rename_string", 443 input_enter_rename, input_exit_rename, 444 input_state_rename_string_table 445}; 446 447/* consume_st state definition. */ 448static const struct input_state input_state_consume_st = { 449 "consume_st", 450 input_enter_rename, NULL, /* rename also waits for ST */ 451 input_state_consume_st_table 452}; 453 454/* ground state table. */ 455static const struct input_transition input_state_ground_table[] = { 456 INPUT_STATE_ANYWHERE, 457 458 { 0x00, 0x17, input_c0_dispatch, NULL }, 459 { 0x19, 0x19, input_c0_dispatch, NULL }, 460 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 461 { 0x20, 0x7e, input_print, NULL }, 462 { 0x7f, 0x7f, NULL, NULL }, 463 { 0x80, 0xff, input_top_bit_set, NULL }, 464 465 { -1, -1, NULL, NULL } 466}; 467 468/* esc_enter state table. */ 469static const struct input_transition input_state_esc_enter_table[] = { 470 INPUT_STATE_ANYWHERE, 471 472 { 0x00, 0x17, input_c0_dispatch, NULL }, 473 { 0x19, 0x19, input_c0_dispatch, NULL }, 474 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 475 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 476 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 477 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 478 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 479 { 0x58, 0x58, NULL, &input_state_consume_st }, 480 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 481 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 482 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 483 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 484 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 485 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 486 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 487 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 488 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 489 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 490 { 0x7f, 0xff, NULL, NULL }, 491 492 { -1, -1, NULL, NULL } 493}; 494 495/* esc_intermediate state table. */ 496static const struct input_transition input_state_esc_intermediate_table[] = { 497 INPUT_STATE_ANYWHERE, 498 499 { 0x00, 0x17, input_c0_dispatch, NULL }, 500 { 0x19, 0x19, input_c0_dispatch, NULL }, 501 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 502 { 0x20, 0x2f, input_intermediate, NULL }, 503 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 504 { 0x7f, 0xff, NULL, NULL }, 505 506 { -1, -1, NULL, NULL } 507}; 508 509/* csi_enter state table. */ 510static const struct input_transition input_state_csi_enter_table[] = { 511 INPUT_STATE_ANYWHERE, 512 513 { 0x00, 0x17, input_c0_dispatch, NULL }, 514 { 0x19, 0x19, input_c0_dispatch, NULL }, 515 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 516 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 517 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 518 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 519 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 520 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 521 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 522 { 0x7f, 0xff, NULL, NULL }, 523 524 { -1, -1, NULL, NULL } 525}; 526 527/* csi_parameter state table. */ 528static const struct input_transition input_state_csi_parameter_table[] = { 529 INPUT_STATE_ANYWHERE, 530 531 { 0x00, 0x17, input_c0_dispatch, NULL }, 532 { 0x19, 0x19, input_c0_dispatch, NULL }, 533 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 534 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 535 { 0x30, 0x39, input_parameter, NULL }, 536 { 0x3a, 0x3a, input_parameter, NULL }, 537 { 0x3b, 0x3b, input_parameter, NULL }, 538 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 539 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 540 { 0x7f, 0xff, NULL, NULL }, 541 542 { -1, -1, NULL, NULL } 543}; 544 545/* csi_intermediate state table. */ 546static const struct input_transition input_state_csi_intermediate_table[] = { 547 INPUT_STATE_ANYWHERE, 548 549 { 0x00, 0x17, input_c0_dispatch, NULL }, 550 { 0x19, 0x19, input_c0_dispatch, NULL }, 551 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 552 { 0x20, 0x2f, input_intermediate, NULL }, 553 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 554 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 555 { 0x7f, 0xff, NULL, NULL }, 556 557 { -1, -1, NULL, NULL } 558}; 559 560/* csi_ignore state table. */ 561static const struct input_transition input_state_csi_ignore_table[] = { 562 INPUT_STATE_ANYWHERE, 563 564 { 0x00, 0x17, input_c0_dispatch, NULL }, 565 { 0x19, 0x19, input_c0_dispatch, NULL }, 566 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 567 { 0x20, 0x3f, NULL, NULL }, 568 { 0x40, 0x7e, NULL, &input_state_ground }, 569 { 0x7f, 0xff, NULL, NULL }, 570 571 { -1, -1, NULL, NULL } 572}; 573 574/* dcs_enter state table. */ 575static const struct input_transition input_state_dcs_enter_table[] = { 576 INPUT_STATE_ANYWHERE, 577 578 { 0x00, 0x17, NULL, NULL }, 579 { 0x19, 0x19, NULL, NULL }, 580 { 0x1c, 0x1f, NULL, NULL }, 581 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 582 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 583 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 584 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 585 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 586 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 587 { 0x7f, 0xff, NULL, NULL }, 588 589 { -1, -1, NULL, NULL } 590}; 591 592/* dcs_parameter state table. */ 593static const struct input_transition input_state_dcs_parameter_table[] = { 594 INPUT_STATE_ANYWHERE, 595 596 { 0x00, 0x17, NULL, NULL }, 597 { 0x19, 0x19, NULL, NULL }, 598 { 0x1c, 0x1f, NULL, NULL }, 599 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 600 { 0x30, 0x39, input_parameter, NULL }, 601 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 602 { 0x3b, 0x3b, input_parameter, NULL }, 603 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 604 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 605 { 0x7f, 0xff, NULL, NULL }, 606 607 { -1, -1, NULL, NULL } 608}; 609 610/* dcs_intermediate state table. */ 611static const struct input_transition input_state_dcs_intermediate_table[] = { 612 INPUT_STATE_ANYWHERE, 613 614 { 0x00, 0x17, NULL, NULL }, 615 { 0x19, 0x19, NULL, NULL }, 616 { 0x1c, 0x1f, NULL, NULL }, 617 { 0x20, 0x2f, input_intermediate, NULL }, 618 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 619 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 620 { 0x7f, 0xff, NULL, NULL }, 621 622 { -1, -1, NULL, NULL } 623}; 624 625/* dcs_handler state table. */ 626static const struct input_transition input_state_dcs_handler_table[] = { 627 /* No INPUT_STATE_ANYWHERE */ 628 629 { 0x00, 0x1a, input_input, NULL }, 630 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 631 { 0x1c, 0xff, input_input, NULL }, 632 633 { -1, -1, NULL, NULL } 634}; 635 636/* dcs_escape state table. */ 637static const struct input_transition input_state_dcs_escape_table[] = { 638 /* No INPUT_STATE_ANYWHERE */ 639 640 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 641 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 642 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 643 644 { -1, -1, NULL, NULL } 645}; 646 647/* dcs_ignore state table. */ 648static const struct input_transition input_state_dcs_ignore_table[] = { 649 INPUT_STATE_ANYWHERE, 650 651 { 0x00, 0x17, NULL, NULL }, 652 { 0x19, 0x19, NULL, NULL }, 653 { 0x1c, 0x1f, NULL, NULL }, 654 { 0x20, 0xff, NULL, NULL }, 655 656 { -1, -1, NULL, NULL } 657}; 658 659/* osc_string state table. */ 660static const struct input_transition input_state_osc_string_table[] = { 661 INPUT_STATE_ANYWHERE, 662 663 { 0x00, 0x06, NULL, NULL }, 664 { 0x07, 0x07, input_end_bel, &input_state_ground }, 665 { 0x08, 0x17, NULL, NULL }, 666 { 0x19, 0x19, NULL, NULL }, 667 { 0x1c, 0x1f, NULL, NULL }, 668 { 0x20, 0xff, input_input, NULL }, 669 670 { -1, -1, NULL, NULL } 671}; 672 673/* apc_string state table. */ 674static const struct input_transition input_state_apc_string_table[] = { 675 INPUT_STATE_ANYWHERE, 676 677 { 0x00, 0x17, NULL, NULL }, 678 { 0x19, 0x19, NULL, NULL }, 679 { 0x1c, 0x1f, NULL, NULL }, 680 { 0x20, 0xff, input_input, NULL }, 681 682 { -1, -1, NULL, NULL } 683}; 684 685/* rename_string state table. */ 686static const struct input_transition input_state_rename_string_table[] = { 687 INPUT_STATE_ANYWHERE, 688 689 { 0x00, 0x17, NULL, NULL }, 690 { 0x19, 0x19, NULL, NULL }, 691 { 0x1c, 0x1f, NULL, NULL }, 692 { 0x20, 0xff, input_input, NULL }, 693 694 { -1, -1, NULL, NULL } 695}; 696 697/* consume_st state table. */ 698static const struct input_transition input_state_consume_st_table[] = { 699 INPUT_STATE_ANYWHERE, 700 701 { 0x00, 0x17, NULL, NULL }, 702 { 0x19, 0x19, NULL, NULL }, 703 { 0x1c, 0x1f, NULL, NULL }, 704 { 0x20, 0xff, NULL, NULL }, 705 706 { -1, -1, NULL, NULL } 707}; 708 709/* Input table compare. */ 710static int 711input_table_compare(const void *key, const void *value) 712{ 713 const struct input_ctx *ictx = key; 714 const struct input_table_entry *entry = value; 715 716 if (ictx->ch != entry->ch) 717 return (ictx->ch - entry->ch); 718 return (strcmp(ictx->interm_buf, entry->interm)); 719} 720 721/* 722 * Timer - if this expires then have been waiting for a terminator for too 723 * long, so reset to ground. 724 */ 725static void 726input_timer_callback(__unused int fd, __unused short events, void *arg) 727{ 728 struct input_ctx *ictx = arg; 729 struct window_pane *wp = ictx->wp; 730 731 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 732 input_reset(wp, 0); 733} 734 735/* Start the timer. */ 736static void 737input_start_timer(struct input_ctx *ictx) 738{ 739 struct timeval tv = { .tv_usec = 100000 }; 740 741 event_del(&ictx->timer); 742 event_add(&ictx->timer, &tv); 743} 744 745/* Reset cell state to default. */ 746static void 747input_reset_cell(struct input_ctx *ictx) 748{ 749 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 750 ictx->cell.set = 0; 751 ictx->cell.g0set = ictx->cell.g1set = 0; 752 753 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 754 ictx->old_cx = 0; 755 ictx->old_cy = 0; 756} 757 758/* Initialise input parser. */ 759void 760input_init(struct window_pane *wp) 761{ 762 struct input_ctx *ictx; 763 764 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 765 766 ictx->input_space = INPUT_BUF_START; 767 ictx->input_buf = xmalloc(INPUT_BUF_START); 768 769 ictx->since_ground = evbuffer_new(); 770 if (ictx->since_ground == NULL) 771 fatalx("out of memory"); 772 773 evtimer_set(&ictx->timer, input_timer_callback, ictx); 774 775 input_reset(wp, 0); 776} 777 778/* Destroy input parser. */ 779void 780input_free(struct window_pane *wp) 781{ 782 struct input_ctx *ictx = wp->ictx; 783 u_int i; 784 785 for (i = 0; i < ictx->param_list_len; i++) { 786 if (ictx->param_list[i].type == INPUT_STRING) 787 free(ictx->param_list[i].str); 788 } 789 790 event_del(&ictx->timer); 791 792 free(ictx->input_buf); 793 evbuffer_free(ictx->since_ground); 794 795 free(ictx); 796 wp->ictx = NULL; 797} 798 799/* Reset input state and clear screen. */ 800void 801input_reset(struct window_pane *wp, int clear) 802{ 803 struct input_ctx *ictx = wp->ictx; 804 805 input_reset_cell(ictx); 806 807 if (clear) { 808 if (TAILQ_EMPTY(&wp->modes)) 809 screen_write_start(&ictx->ctx, wp, &wp->base); 810 else 811 screen_write_start(&ictx->ctx, NULL, &wp->base); 812 screen_write_reset(&ictx->ctx); 813 screen_write_stop(&ictx->ctx); 814 } 815 816 input_clear(ictx); 817 818 ictx->last = -1; 819 820 ictx->state = &input_state_ground; 821 ictx->flags = 0; 822} 823 824/* Return pending data. */ 825struct evbuffer * 826input_pending(struct window_pane *wp) 827{ 828 return (wp->ictx->since_ground); 829} 830 831/* Change input state. */ 832static void 833input_set_state(struct window_pane *wp, const struct input_transition *itr) 834{ 835 struct input_ctx *ictx = wp->ictx; 836 837 if (ictx->state->exit != NULL) 838 ictx->state->exit(ictx); 839 ictx->state = itr->state; 840 if (ictx->state->enter != NULL) 841 ictx->state->enter(ictx); 842} 843 844/* Parse input. */ 845void 846input_parse(struct window_pane *wp) 847{ 848 struct input_ctx *ictx = wp->ictx; 849 const struct input_transition *itr; 850 struct evbuffer *evb = wp->event->input; 851 u_char *buf; 852 size_t len, off; 853 854 if (EVBUFFER_LENGTH(evb) == 0) 855 return; 856 857 window_update_activity(wp->window); 858 wp->flags |= PANE_CHANGED; 859 860 /* 861 * Open the screen. Use NULL wp if there is a mode set as don't want to 862 * update the tty. 863 */ 864 if (TAILQ_EMPTY(&wp->modes)) 865 screen_write_start(&ictx->ctx, wp, &wp->base); 866 else 867 screen_write_start(&ictx->ctx, NULL, &wp->base); 868 ictx->wp = wp; 869 870 buf = EVBUFFER_DATA(evb); 871 len = EVBUFFER_LENGTH(evb); 872 off = 0; 873 874 notify_input(wp, evb); 875 876 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 877 ictx->state->name, len, (int)len, buf); 878 879 /* Parse the input. */ 880 while (off < len) { 881 ictx->ch = buf[off++]; 882 883 /* Find the transition. */ 884 itr = ictx->state->transitions; 885 while (itr->first != -1 && itr->last != -1) { 886 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 887 break; 888 itr++; 889 } 890 if (itr->first == -1 || itr->last == -1) { 891 /* No transition? Eh? */ 892 fatalx("no transition from state"); 893 } 894 895 /* 896 * Any state except print stops the current collection. This is 897 * an optimization to avoid checking if the attributes have 898 * changed for every character. It will stop unnecessarily for 899 * sequences that don't make a terminal change, but they should 900 * be the minority. 901 */ 902 if (itr->handler != input_print) 903 screen_write_collect_end(&ictx->ctx); 904 905 /* 906 * Execute the handler, if any. Don't switch state if it 907 * returns non-zero. 908 */ 909 if (itr->handler != NULL && itr->handler(ictx) != 0) 910 continue; 911 912 /* And switch state, if necessary. */ 913 if (itr->state != NULL) 914 input_set_state(wp, itr); 915 916 /* If not in ground state, save input. */ 917 if (ictx->state != &input_state_ground) 918 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 919 } 920 921 /* Close the screen. */ 922 screen_write_stop(&ictx->ctx); 923 924 evbuffer_drain(evb, len); 925} 926 927/* Split the parameter list (if any). */ 928static int 929input_split(struct input_ctx *ictx) 930{ 931 const char *errstr; 932 char *ptr, *out; 933 struct input_param *ip; 934 u_int i; 935 936 for (i = 0; i < ictx->param_list_len; i++) { 937 if (ictx->param_list[i].type == INPUT_STRING) 938 free(ictx->param_list[i].str); 939 } 940 ictx->param_list_len = 0; 941 942 if (ictx->param_len == 0) 943 return (0); 944 ip = &ictx->param_list[0]; 945 946 ptr = ictx->param_buf; 947 while ((out = strsep(&ptr, ";")) != NULL) { 948 if (*out == '\0') 949 ip->type = INPUT_MISSING; 950 else { 951 if (strchr(out, ':') != NULL) { 952 ip->type = INPUT_STRING; 953 ip->str = xstrdup(out); 954 } else { 955 ip->type = INPUT_NUMBER; 956 ip->num = strtonum(out, 0, INT_MAX, &errstr); 957 if (errstr != NULL) 958 return (-1); 959 } 960 } 961 ip = &ictx->param_list[++ictx->param_list_len]; 962 if (ictx->param_list_len == nitems(ictx->param_list)) 963 return (-1); 964 } 965 966 for (i = 0; i < ictx->param_list_len; i++) { 967 ip = &ictx->param_list[i]; 968 if (ip->type == INPUT_MISSING) 969 log_debug("parameter %u: missing", i); 970 else if (ip->type == INPUT_STRING) 971 log_debug("parameter %u: string %s", i, ip->str); 972 else if (ip->type == INPUT_NUMBER) 973 log_debug("parameter %u: number %d", i, ip->num); 974 } 975 976 return (0); 977} 978 979/* Get an argument or return default value. */ 980static int 981input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 982{ 983 struct input_param *ip; 984 int retval; 985 986 if (validx >= ictx->param_list_len) 987 return (defval); 988 ip = &ictx->param_list[validx]; 989 if (ip->type == INPUT_MISSING) 990 return (defval); 991 if (ip->type == INPUT_STRING) 992 return (-1); 993 retval = ip->num; 994 if (retval < minval) 995 return (minval); 996 return (retval); 997} 998 999/* Reply to terminal query. */ 1000static void 1001input_reply(struct input_ctx *ictx, const char *fmt, ...) 1002{ 1003 va_list ap; 1004 char *reply; 1005 1006 va_start(ap, fmt); 1007 xvasprintf(&reply, fmt, ap); 1008 va_end(ap); 1009 1010 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 1011 free(reply); 1012} 1013 1014/* Clear saved state. */ 1015static void 1016input_clear(struct input_ctx *ictx) 1017{ 1018 event_del(&ictx->timer); 1019 1020 *ictx->interm_buf = '\0'; 1021 ictx->interm_len = 0; 1022 1023 *ictx->param_buf = '\0'; 1024 ictx->param_len = 0; 1025 1026 *ictx->input_buf = '\0'; 1027 ictx->input_len = 0; 1028 1029 ictx->input_end = INPUT_END_ST; 1030 1031 ictx->flags &= ~INPUT_DISCARD; 1032} 1033 1034/* Reset for ground state. */ 1035static void 1036input_ground(struct input_ctx *ictx) 1037{ 1038 event_del(&ictx->timer); 1039 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1040 1041 if (ictx->input_space > INPUT_BUF_START) { 1042 ictx->input_space = INPUT_BUF_START; 1043 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1044 } 1045} 1046 1047/* Output this character to the screen. */ 1048static int 1049input_print(struct input_ctx *ictx) 1050{ 1051 int set; 1052 1053 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1054 1055 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1056 if (set == 1) 1057 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1058 else 1059 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1060 1061 utf8_set(&ictx->cell.cell.data, ictx->ch); 1062 screen_write_collect_add(&ictx->ctx, &ictx->cell.cell); 1063 ictx->last = ictx->ch; 1064 1065 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1066 1067 return (0); 1068} 1069 1070/* Collect intermediate string. */ 1071static int 1072input_intermediate(struct input_ctx *ictx) 1073{ 1074 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1075 ictx->flags |= INPUT_DISCARD; 1076 else { 1077 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1078 ictx->interm_buf[ictx->interm_len] = '\0'; 1079 } 1080 1081 return (0); 1082} 1083 1084/* Collect parameter string. */ 1085static int 1086input_parameter(struct input_ctx *ictx) 1087{ 1088 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1089 ictx->flags |= INPUT_DISCARD; 1090 else { 1091 ictx->param_buf[ictx->param_len++] = ictx->ch; 1092 ictx->param_buf[ictx->param_len] = '\0'; 1093 } 1094 1095 return (0); 1096} 1097 1098/* Collect input string. */ 1099static int 1100input_input(struct input_ctx *ictx) 1101{ 1102 size_t available; 1103 1104 available = ictx->input_space; 1105 while (ictx->input_len + 1 >= available) { 1106 available *= 2; 1107 if (available > INPUT_BUF_LIMIT) { 1108 ictx->flags |= INPUT_DISCARD; 1109 return (0); 1110 } 1111 ictx->input_buf = xrealloc(ictx->input_buf, available); 1112 ictx->input_space = available; 1113 } 1114 ictx->input_buf[ictx->input_len++] = ictx->ch; 1115 ictx->input_buf[ictx->input_len] = '\0'; 1116 1117 return (0); 1118} 1119 1120/* Execute C0 control sequence. */ 1121static int 1122input_c0_dispatch(struct input_ctx *ictx) 1123{ 1124 struct screen_write_ctx *sctx = &ictx->ctx; 1125 struct window_pane *wp = ictx->wp; 1126 struct screen *s = sctx->s; 1127 1128 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1129 1130 log_debug("%s: '%c'", __func__, ictx->ch); 1131 1132 switch (ictx->ch) { 1133 case '\000': /* NUL */ 1134 break; 1135 case '\007': /* BEL */ 1136 alerts_queue(wp->window, WINDOW_BELL); 1137 break; 1138 case '\010': /* BS */ 1139 screen_write_backspace(sctx); 1140 break; 1141 case '\011': /* HT */ 1142 /* Don't tab beyond the end of the line. */ 1143 if (s->cx >= screen_size_x(s) - 1) 1144 break; 1145 1146 /* Find the next tab point, or use the last column if none. */ 1147 do { 1148 s->cx++; 1149 if (bit_test(s->tabs, s->cx)) 1150 break; 1151 } while (s->cx < screen_size_x(s) - 1); 1152 break; 1153 case '\012': /* LF */ 1154 case '\013': /* VT */ 1155 case '\014': /* FF */ 1156 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1157 break; 1158 case '\015': /* CR */ 1159 screen_write_carriagereturn(sctx); 1160 break; 1161 case '\016': /* SO */ 1162 ictx->cell.set = 1; 1163 break; 1164 case '\017': /* SI */ 1165 ictx->cell.set = 0; 1166 break; 1167 default: 1168 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1169 break; 1170 } 1171 1172 ictx->last = -1; 1173 return (0); 1174} 1175 1176/* Execute escape sequence. */ 1177static int 1178input_esc_dispatch(struct input_ctx *ictx) 1179{ 1180 struct screen_write_ctx *sctx = &ictx->ctx; 1181 struct screen *s = sctx->s; 1182 struct input_table_entry *entry; 1183 1184 if (ictx->flags & INPUT_DISCARD) 1185 return (0); 1186 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1187 1188 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1189 sizeof input_esc_table[0], input_table_compare); 1190 if (entry == NULL) { 1191 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1192 return (0); 1193 } 1194 1195 switch (entry->type) { 1196 case INPUT_ESC_RIS: 1197 window_pane_reset_palette(ictx->wp); 1198 input_reset_cell(ictx); 1199 screen_write_reset(sctx); 1200 break; 1201 case INPUT_ESC_IND: 1202 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1203 break; 1204 case INPUT_ESC_NEL: 1205 screen_write_carriagereturn(sctx); 1206 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1207 break; 1208 case INPUT_ESC_HTS: 1209 if (s->cx < screen_size_x(s)) 1210 bit_set(s->tabs, s->cx); 1211 break; 1212 case INPUT_ESC_RI: 1213 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1214 break; 1215 case INPUT_ESC_DECKPAM: 1216 screen_write_mode_set(sctx, MODE_KKEYPAD); 1217 break; 1218 case INPUT_ESC_DECKPNM: 1219 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1220 break; 1221 case INPUT_ESC_DECSC: 1222 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1223 ictx->old_cx = s->cx; 1224 ictx->old_cy = s->cy; 1225 break; 1226 case INPUT_ESC_DECRC: 1227 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1228 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1229 break; 1230 case INPUT_ESC_DECALN: 1231 screen_write_alignmenttest(sctx); 1232 break; 1233 case INPUT_ESC_SCSG0_ON: 1234 ictx->cell.g0set = 1; 1235 break; 1236 case INPUT_ESC_SCSG0_OFF: 1237 ictx->cell.g0set = 0; 1238 break; 1239 case INPUT_ESC_SCSG1_ON: 1240 ictx->cell.g1set = 1; 1241 break; 1242 case INPUT_ESC_SCSG1_OFF: 1243 ictx->cell.g1set = 0; 1244 break; 1245 case INPUT_ESC_ST: 1246 /* ST terminates OSC but the state transition already did it. */ 1247 break; 1248 } 1249 1250 ictx->last = -1; 1251 return (0); 1252} 1253 1254/* Execute control sequence. */ 1255static int 1256input_csi_dispatch(struct input_ctx *ictx) 1257{ 1258 struct screen_write_ctx *sctx = &ictx->ctx; 1259 struct screen *s = sctx->s; 1260 struct input_table_entry *entry; 1261 int i, n, m; 1262 u_int cx, bg = ictx->cell.cell.bg; 1263 1264 if (ictx->flags & INPUT_DISCARD) 1265 return (0); 1266 1267 log_debug("%s: '%c' \"%s\" \"%s\"", 1268 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1269 1270 if (input_split(ictx) != 0) 1271 return (0); 1272 1273 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1274 sizeof input_csi_table[0], input_table_compare); 1275 if (entry == NULL) { 1276 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1277 return (0); 1278 } 1279 1280 switch (entry->type) { 1281 case INPUT_CSI_CBT: 1282 /* Find the previous tab point, n times. */ 1283 cx = s->cx; 1284 if (cx > screen_size_x(s) - 1) 1285 cx = screen_size_x(s) - 1; 1286 n = input_get(ictx, 0, 1, 1); 1287 if (n == -1) 1288 break; 1289 while (cx > 0 && n-- > 0) { 1290 do 1291 cx--; 1292 while (cx > 0 && !bit_test(s->tabs, cx)); 1293 } 1294 s->cx = cx; 1295 break; 1296 case INPUT_CSI_CUB: 1297 n = input_get(ictx, 0, 1, 1); 1298 if (n != -1) 1299 screen_write_cursorleft(sctx, n); 1300 break; 1301 case INPUT_CSI_CUD: 1302 n = input_get(ictx, 0, 1, 1); 1303 if (n != -1) 1304 screen_write_cursordown(sctx, n); 1305 break; 1306 case INPUT_CSI_CUF: 1307 n = input_get(ictx, 0, 1, 1); 1308 if (n != -1) 1309 screen_write_cursorright(sctx, n); 1310 break; 1311 case INPUT_CSI_CUP: 1312 n = input_get(ictx, 0, 1, 1); 1313 m = input_get(ictx, 1, 1, 1); 1314 if (n != -1 && m != -1) 1315 screen_write_cursormove(sctx, m - 1, n - 1); 1316 break; 1317 case INPUT_CSI_WINOPS: 1318 input_csi_dispatch_winops(ictx); 1319 break; 1320 case INPUT_CSI_CUU: 1321 n = input_get(ictx, 0, 1, 1); 1322 if (n != -1) 1323 screen_write_cursorup(sctx, n); 1324 break; 1325 case INPUT_CSI_CNL: 1326 n = input_get(ictx, 0, 1, 1); 1327 if (n != -1) { 1328 screen_write_carriagereturn(sctx); 1329 screen_write_cursordown(sctx, n); 1330 } 1331 break; 1332 case INPUT_CSI_CPL: 1333 n = input_get(ictx, 0, 1, 1); 1334 if (n != -1) { 1335 screen_write_carriagereturn(sctx); 1336 screen_write_cursorup(sctx, n); 1337 } 1338 break; 1339 case INPUT_CSI_DA: 1340 switch (input_get(ictx, 0, 0, 0)) { 1341 case -1: 1342 break; 1343 case 0: 1344 input_reply(ictx, "\033[?1;2c"); 1345 break; 1346 default: 1347 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1348 break; 1349 } 1350 break; 1351 case INPUT_CSI_DA_TWO: 1352 switch (input_get(ictx, 0, 0, 0)) { 1353 case -1: 1354 break; 1355 case 0: 1356 input_reply(ictx, "\033[>84;0;0c"); 1357 break; 1358 default: 1359 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1360 break; 1361 } 1362 break; 1363 case INPUT_CSI_ECH: 1364 n = input_get(ictx, 0, 1, 1); 1365 if (n != -1) 1366 screen_write_clearcharacter(sctx, n, bg); 1367 break; 1368 case INPUT_CSI_DCH: 1369 n = input_get(ictx, 0, 1, 1); 1370 if (n != -1) 1371 screen_write_deletecharacter(sctx, n, bg); 1372 break; 1373 case INPUT_CSI_DECSTBM: 1374 n = input_get(ictx, 0, 1, 1); 1375 m = input_get(ictx, 1, 1, screen_size_y(s)); 1376 if (n != -1 && m != -1) 1377 screen_write_scrollregion(sctx, n - 1, m - 1); 1378 break; 1379 case INPUT_CSI_DL: 1380 n = input_get(ictx, 0, 1, 1); 1381 if (n != -1) 1382 screen_write_deleteline(sctx, n, bg); 1383 break; 1384 case INPUT_CSI_DSR: 1385 switch (input_get(ictx, 0, 0, 0)) { 1386 case -1: 1387 break; 1388 case 5: 1389 input_reply(ictx, "\033[0n"); 1390 break; 1391 case 6: 1392 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1393 break; 1394 default: 1395 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1396 break; 1397 } 1398 break; 1399 case INPUT_CSI_ED: 1400 switch (input_get(ictx, 0, 0, 0)) { 1401 case -1: 1402 break; 1403 case 0: 1404 screen_write_clearendofscreen(sctx, bg); 1405 break; 1406 case 1: 1407 screen_write_clearstartofscreen(sctx, bg); 1408 break; 1409 case 2: 1410 screen_write_clearscreen(sctx, bg); 1411 break; 1412 case 3: 1413 if (input_get(ictx, 1, 0, 0) == 0) { 1414 /* 1415 * Linux console extension to clear history 1416 * (for example before locking the screen). 1417 */ 1418 screen_write_clearhistory(sctx); 1419 } 1420 break; 1421 default: 1422 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1423 break; 1424 } 1425 break; 1426 case INPUT_CSI_EL: 1427 switch (input_get(ictx, 0, 0, 0)) { 1428 case -1: 1429 break; 1430 case 0: 1431 screen_write_clearendofline(sctx, bg); 1432 break; 1433 case 1: 1434 screen_write_clearstartofline(sctx, bg); 1435 break; 1436 case 2: 1437 screen_write_clearline(sctx, bg); 1438 break; 1439 default: 1440 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1441 break; 1442 } 1443 break; 1444 case INPUT_CSI_HPA: 1445 n = input_get(ictx, 0, 1, 1); 1446 if (n != -1) 1447 screen_write_cursormove(sctx, n - 1, s->cy); 1448 break; 1449 case INPUT_CSI_ICH: 1450 n = input_get(ictx, 0, 1, 1); 1451 if (n != -1) 1452 screen_write_insertcharacter(sctx, n, bg); 1453 break; 1454 case INPUT_CSI_IL: 1455 n = input_get(ictx, 0, 1, 1); 1456 if (n != -1) 1457 screen_write_insertline(sctx, n, bg); 1458 break; 1459 case INPUT_CSI_REP: 1460 n = input_get(ictx, 0, 1, 1); 1461 if (n == -1) 1462 break; 1463 1464 if (ictx->last == -1) 1465 break; 1466 ictx->ch = ictx->last; 1467 1468 for (i = 0; i < n; i++) 1469 input_print(ictx); 1470 break; 1471 case INPUT_CSI_RCP: 1472 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1473 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1474 break; 1475 case INPUT_CSI_RM: 1476 input_csi_dispatch_rm(ictx); 1477 break; 1478 case INPUT_CSI_RM_PRIVATE: 1479 input_csi_dispatch_rm_private(ictx); 1480 break; 1481 case INPUT_CSI_SCP: 1482 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1483 ictx->old_cx = s->cx; 1484 ictx->old_cy = s->cy; 1485 break; 1486 case INPUT_CSI_SGR: 1487 input_csi_dispatch_sgr(ictx); 1488 break; 1489 case INPUT_CSI_SM: 1490 input_csi_dispatch_sm(ictx); 1491 break; 1492 case INPUT_CSI_SM_PRIVATE: 1493 input_csi_dispatch_sm_private(ictx); 1494 break; 1495 case INPUT_CSI_SU: 1496 n = input_get(ictx, 0, 1, 1); 1497 if (n != -1) 1498 screen_write_scrollup(sctx, n, bg); 1499 break; 1500 case INPUT_CSI_TBC: 1501 switch (input_get(ictx, 0, 0, 0)) { 1502 case -1: 1503 break; 1504 case 0: 1505 if (s->cx < screen_size_x(s)) 1506 bit_clear(s->tabs, s->cx); 1507 break; 1508 case 3: 1509 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1510 break; 1511 default: 1512 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1513 break; 1514 } 1515 break; 1516 case INPUT_CSI_VPA: 1517 n = input_get(ictx, 0, 1, 1); 1518 if (n != -1) 1519 screen_write_cursormove(sctx, s->cx, n - 1); 1520 break; 1521 case INPUT_CSI_DECSCUSR: 1522 n = input_get(ictx, 0, 0, 0); 1523 if (n != -1) 1524 screen_set_cursor_style(s, n); 1525 break; 1526 } 1527 1528 ictx->last = -1; 1529 return (0); 1530} 1531 1532/* Handle CSI RM. */ 1533static void 1534input_csi_dispatch_rm(struct input_ctx *ictx) 1535{ 1536 u_int i; 1537 1538 for (i = 0; i < ictx->param_list_len; i++) { 1539 switch (input_get(ictx, i, 0, -1)) { 1540 case -1: 1541 break; 1542 case 4: /* IRM */ 1543 screen_write_mode_clear(&ictx->ctx, MODE_INSERT); 1544 break; 1545 case 34: 1546 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1547 break; 1548 default: 1549 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1550 break; 1551 } 1552 } 1553} 1554 1555/* Handle CSI private RM. */ 1556static void 1557input_csi_dispatch_rm_private(struct input_ctx *ictx) 1558{ 1559 struct window_pane *wp = ictx->wp; 1560 u_int i; 1561 1562 for (i = 0; i < ictx->param_list_len; i++) { 1563 switch (input_get(ictx, i, 0, -1)) { 1564 case -1: 1565 break; 1566 case 1: /* DECCKM */ 1567 screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR); 1568 break; 1569 case 3: /* DECCOLM */ 1570 screen_write_cursormove(&ictx->ctx, 0, 0); 1571 screen_write_clearscreen(&ictx->ctx, 1572 ictx->cell.cell.bg); 1573 break; 1574 case 6: /* DECOM */ 1575 screen_write_mode_clear(&ictx->ctx, MODE_ORIGIN); 1576 screen_write_cursormove(&ictx->ctx, 0, 0); 1577 break; 1578 case 7: /* DECAWM */ 1579 screen_write_mode_clear(&ictx->ctx, MODE_WRAP); 1580 break; 1581 case 12: 1582 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1583 break; 1584 case 25: /* TCEM */ 1585 screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); 1586 break; 1587 case 1000: 1588 case 1001: 1589 case 1002: 1590 case 1003: 1591 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1592 break; 1593 case 1004: 1594 screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON); 1595 break; 1596 case 1005: 1597 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8); 1598 break; 1599 case 1006: 1600 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR); 1601 break; 1602 case 47: 1603 case 1047: 1604 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1605 break; 1606 case 1049: 1607 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1608 break; 1609 case 2004: 1610 screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE); 1611 break; 1612 default: 1613 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1614 break; 1615 } 1616 } 1617} 1618 1619/* Handle CSI SM. */ 1620static void 1621input_csi_dispatch_sm(struct input_ctx *ictx) 1622{ 1623 u_int i; 1624 1625 for (i = 0; i < ictx->param_list_len; i++) { 1626 switch (input_get(ictx, i, 0, -1)) { 1627 case -1: 1628 break; 1629 case 4: /* IRM */ 1630 screen_write_mode_set(&ictx->ctx, MODE_INSERT); 1631 break; 1632 case 34: 1633 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1634 break; 1635 default: 1636 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1637 break; 1638 } 1639 } 1640} 1641 1642/* Handle CSI private SM. */ 1643static void 1644input_csi_dispatch_sm_private(struct input_ctx *ictx) 1645{ 1646 struct window_pane *wp = ictx->wp; 1647 u_int i; 1648 1649 for (i = 0; i < ictx->param_list_len; i++) { 1650 switch (input_get(ictx, i, 0, -1)) { 1651 case -1: 1652 break; 1653 case 1: /* DECCKM */ 1654 screen_write_mode_set(&ictx->ctx, MODE_KCURSOR); 1655 break; 1656 case 3: /* DECCOLM */ 1657 screen_write_cursormove(&ictx->ctx, 0, 0); 1658 screen_write_clearscreen(&ictx->ctx, 1659 ictx->cell.cell.bg); 1660 break; 1661 case 6: /* DECOM */ 1662 screen_write_mode_set(&ictx->ctx, MODE_ORIGIN); 1663 screen_write_cursormove(&ictx->ctx, 0, 0); 1664 break; 1665 case 7: /* DECAWM */ 1666 screen_write_mode_set(&ictx->ctx, MODE_WRAP); 1667 break; 1668 case 12: 1669 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1670 break; 1671 case 25: /* TCEM */ 1672 screen_write_mode_set(&ictx->ctx, MODE_CURSOR); 1673 break; 1674 case 1000: 1675 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1676 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD); 1677 break; 1678 case 1002: 1679 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1680 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON); 1681 break; 1682 case 1003: 1683 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1684 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_ALL); 1685 break; 1686 case 1004: 1687 if (ictx->ctx.s->mode & MODE_FOCUSON) 1688 break; 1689 screen_write_mode_set(&ictx->ctx, MODE_FOCUSON); 1690 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1691 break; 1692 case 1005: 1693 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8); 1694 break; 1695 case 1006: 1696 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR); 1697 break; 1698 case 47: 1699 case 1047: 1700 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1701 break; 1702 case 1049: 1703 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1704 break; 1705 case 2004: 1706 screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE); 1707 break; 1708 default: 1709 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1710 break; 1711 } 1712 } 1713} 1714 1715/* Handle CSI window operations. */ 1716static void 1717input_csi_dispatch_winops(struct input_ctx *ictx) 1718{ 1719 struct window_pane *wp = ictx->wp; 1720 int n, m; 1721 1722 m = 0; 1723 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1724 switch (n) { 1725 case 1: 1726 case 2: 1727 case 5: 1728 case 6: 1729 case 7: 1730 case 11: 1731 case 13: 1732 case 14: 1733 case 19: 1734 case 20: 1735 case 21: 1736 case 24: 1737 break; 1738 case 3: 1739 case 4: 1740 case 8: 1741 m++; 1742 if (input_get(ictx, m, 0, -1) == -1) 1743 return; 1744 /* FALLTHROUGH */ 1745 case 9: 1746 case 10: 1747 m++; 1748 if (input_get(ictx, m, 0, -1) == -1) 1749 return; 1750 break; 1751 case 22: 1752 m++; 1753 switch (input_get(ictx, m, 0, -1)) { 1754 case -1: 1755 return; 1756 case 0: 1757 case 2: 1758 screen_push_title(ictx->ctx.s); 1759 break; 1760 } 1761 break; 1762 case 23: 1763 m++; 1764 switch (input_get(ictx, m, 0, -1)) { 1765 case -1: 1766 return; 1767 case 0: 1768 case 2: 1769 screen_pop_title(ictx->ctx.s); 1770 server_status_window(ictx->wp->window); 1771 break; 1772 } 1773 break; 1774 case 18: 1775 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1776 break; 1777 default: 1778 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1779 break; 1780 } 1781 m++; 1782 } 1783} 1784 1785/* Helper for 256 colour SGR. */ 1786static int 1787input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1788{ 1789 struct grid_cell *gc = &ictx->cell.cell; 1790 1791 if (c == -1 || c > 255) { 1792 if (fgbg == 38) 1793 gc->fg = 8; 1794 else if (fgbg == 48) 1795 gc->bg = 8; 1796 } else { 1797 if (fgbg == 38) 1798 gc->fg = c | COLOUR_FLAG_256; 1799 else if (fgbg == 48) 1800 gc->bg = c | COLOUR_FLAG_256; 1801 } 1802 return (1); 1803} 1804 1805/* Handle CSI SGR for 256 colours. */ 1806static void 1807input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1808{ 1809 int c; 1810 1811 c = input_get(ictx, (*i) + 1, 0, -1); 1812 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1813 (*i)++; 1814} 1815 1816/* Helper for RGB colour SGR. */ 1817static int 1818input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1819 int b) 1820{ 1821 struct grid_cell *gc = &ictx->cell.cell; 1822 1823 if (r == -1 || r > 255) 1824 return (0); 1825 if (g == -1 || g > 255) 1826 return (0); 1827 if (b == -1 || b > 255) 1828 return (0); 1829 1830 if (fgbg == 38) 1831 gc->fg = colour_join_rgb(r, g, b); 1832 else if (fgbg == 48) 1833 gc->bg = colour_join_rgb(r, g, b); 1834 return (1); 1835} 1836 1837/* Handle CSI SGR for RGB colours. */ 1838static void 1839input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1840{ 1841 int r, g, b; 1842 1843 r = input_get(ictx, (*i) + 1, 0, -1); 1844 g = input_get(ictx, (*i) + 2, 0, -1); 1845 b = input_get(ictx, (*i) + 3, 0, -1); 1846 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1847 (*i) += 3; 1848} 1849 1850/* Handle CSI SGR with a ISO parameter. */ 1851static void 1852input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1853{ 1854 struct grid_cell *gc = &ictx->cell.cell; 1855 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1856 int p[8]; 1857 u_int n; 1858 const char *errstr; 1859 1860 for (n = 0; n < nitems(p); n++) 1861 p[n] = -1; 1862 n = 0; 1863 1864 ptr = copy = xstrdup(s); 1865 while ((out = strsep(&ptr, ":")) != NULL) { 1866 if (*out != '\0') { 1867 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1868 if (errstr != NULL || n == nitems(p)) { 1869 free(copy); 1870 return; 1871 } 1872 } else 1873 n++; 1874 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1875 } 1876 free(copy); 1877 1878 if (n == 0) 1879 return; 1880 if (p[0] == 4) { 1881 if (n != 2) 1882 return; 1883 switch (p[1]) { 1884 case 0: 1885 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1886 break; 1887 case 1: 1888 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1889 gc->attr |= GRID_ATTR_UNDERSCORE; 1890 break; 1891 case 2: 1892 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1893 gc->attr |= GRID_ATTR_UNDERSCORE_2; 1894 break; 1895 case 3: 1896 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1897 gc->attr |= GRID_ATTR_UNDERSCORE_3; 1898 break; 1899 case 4: 1900 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1901 gc->attr |= GRID_ATTR_UNDERSCORE_4; 1902 break; 1903 case 5: 1904 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1905 gc->attr |= GRID_ATTR_UNDERSCORE_5; 1906 break; 1907 } 1908 return; 1909 } 1910 if (p[0] != 38 && p[0] != 48) 1911 return; 1912 if (p[1] == -1) 1913 i = 2; 1914 else 1915 i = 1; 1916 switch (p[i]) { 1917 case 2: 1918 if (n < i + 4) 1919 break; 1920 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i + 1], p[i + 2], 1921 p[i + 3]); 1922 break; 1923 case 5: 1924 if (n < i + 2) 1925 break; 1926 input_csi_dispatch_sgr_256_do(ictx, p[0], p[i + 1]); 1927 break; 1928 } 1929} 1930 1931/* Handle CSI SGR. */ 1932static void 1933input_csi_dispatch_sgr(struct input_ctx *ictx) 1934{ 1935 struct grid_cell *gc = &ictx->cell.cell; 1936 u_int i; 1937 int n; 1938 1939 if (ictx->param_list_len == 0) { 1940 memcpy(gc, &grid_default_cell, sizeof *gc); 1941 return; 1942 } 1943 1944 for (i = 0; i < ictx->param_list_len; i++) { 1945 if (ictx->param_list[i].type == INPUT_STRING) { 1946 input_csi_dispatch_sgr_colon(ictx, i); 1947 continue; 1948 } 1949 n = input_get(ictx, i, 0, 0); 1950 if (n == -1) 1951 continue; 1952 1953 if (n == 38 || n == 48) { 1954 i++; 1955 switch (input_get(ictx, i, 0, -1)) { 1956 case 2: 1957 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1958 break; 1959 case 5: 1960 input_csi_dispatch_sgr_256(ictx, n, &i); 1961 break; 1962 } 1963 continue; 1964 } 1965 1966 switch (n) { 1967 case 0: 1968 memcpy(gc, &grid_default_cell, sizeof *gc); 1969 break; 1970 case 1: 1971 gc->attr |= GRID_ATTR_BRIGHT; 1972 break; 1973 case 2: 1974 gc->attr |= GRID_ATTR_DIM; 1975 break; 1976 case 3: 1977 gc->attr |= GRID_ATTR_ITALICS; 1978 break; 1979 case 4: 1980 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 1981 gc->attr |= GRID_ATTR_UNDERSCORE; 1982 break; 1983 case 5: 1984 gc->attr |= GRID_ATTR_BLINK; 1985 break; 1986 case 7: 1987 gc->attr |= GRID_ATTR_REVERSE; 1988 break; 1989 case 8: 1990 gc->attr |= GRID_ATTR_HIDDEN; 1991 break; 1992 case 9: 1993 gc->attr |= GRID_ATTR_STRIKETHROUGH; 1994 break; 1995 case 22: 1996 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 1997 break; 1998 case 23: 1999 gc->attr &= ~GRID_ATTR_ITALICS; 2000 break; 2001 case 24: 2002 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2003 break; 2004 case 25: 2005 gc->attr &= ~GRID_ATTR_BLINK; 2006 break; 2007 case 27: 2008 gc->attr &= ~GRID_ATTR_REVERSE; 2009 break; 2010 case 28: 2011 gc->attr &= ~GRID_ATTR_HIDDEN; 2012 break; 2013 case 29: 2014 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2015 break; 2016 case 30: 2017 case 31: 2018 case 32: 2019 case 33: 2020 case 34: 2021 case 35: 2022 case 36: 2023 case 37: 2024 gc->fg = n - 30; 2025 break; 2026 case 39: 2027 gc->fg = 8; 2028 break; 2029 case 40: 2030 case 41: 2031 case 42: 2032 case 43: 2033 case 44: 2034 case 45: 2035 case 46: 2036 case 47: 2037 gc->bg = n - 40; 2038 break; 2039 case 49: 2040 gc->bg = 8; 2041 break; 2042 case 90: 2043 case 91: 2044 case 92: 2045 case 93: 2046 case 94: 2047 case 95: 2048 case 96: 2049 case 97: 2050 gc->fg = n; 2051 break; 2052 case 100: 2053 case 101: 2054 case 102: 2055 case 103: 2056 case 104: 2057 case 105: 2058 case 106: 2059 case 107: 2060 gc->bg = n - 10; 2061 break; 2062 } 2063 } 2064} 2065 2066/* End of input with BEL. */ 2067static int 2068input_end_bel(struct input_ctx *ictx) 2069{ 2070 log_debug("%s", __func__); 2071 2072 ictx->input_end = INPUT_END_BEL; 2073 2074 return (0); 2075} 2076 2077/* DCS string started. */ 2078static void 2079input_enter_dcs(struct input_ctx *ictx) 2080{ 2081 log_debug("%s", __func__); 2082 2083 input_clear(ictx); 2084 input_start_timer(ictx); 2085 ictx->last = -1; 2086} 2087 2088/* DCS terminator (ST) received. */ 2089static int 2090input_dcs_dispatch(struct input_ctx *ictx) 2091{ 2092 const char prefix[] = "tmux;"; 2093 const u_int prefix_len = (sizeof prefix) - 1; 2094 2095 if (ictx->flags & INPUT_DISCARD) 2096 return (0); 2097 2098 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2099 2100 /* Check for tmux prefix. */ 2101 if (ictx->input_len >= prefix_len && 2102 strncmp(ictx->input_buf, prefix, prefix_len) == 0) { 2103 screen_write_rawstring(&ictx->ctx, 2104 ictx->input_buf + prefix_len, ictx->input_len - prefix_len); 2105 } 2106 2107 return (0); 2108} 2109 2110/* OSC string started. */ 2111static void 2112input_enter_osc(struct input_ctx *ictx) 2113{ 2114 log_debug("%s", __func__); 2115 2116 input_clear(ictx); 2117 input_start_timer(ictx); 2118 ictx->last = -1; 2119} 2120 2121/* OSC terminator (ST) received. */ 2122static void 2123input_exit_osc(struct input_ctx *ictx) 2124{ 2125 u_char *p = ictx->input_buf; 2126 u_int option; 2127 2128 if (ictx->flags & INPUT_DISCARD) 2129 return; 2130 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2131 return; 2132 2133 log_debug("%s: \"%s\" (end %s)", __func__, p, 2134 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2135 2136 option = 0; 2137 while (*p >= '0' && *p <= '9') 2138 option = option * 10 + *p++ - '0'; 2139 if (*p == ';') 2140 p++; 2141 2142 switch (option) { 2143 case 0: 2144 case 2: 2145 if (utf8_isvalid(p)) { 2146 screen_set_title(ictx->ctx.s, p); 2147 server_status_window(ictx->wp->window); 2148 } 2149 break; 2150 case 4: 2151 input_osc_4(ictx, p); 2152 break; 2153 case 10: 2154 input_osc_10(ictx, p); 2155 break; 2156 case 11: 2157 input_osc_11(ictx, p); 2158 break; 2159 case 12: 2160 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2161 screen_set_cursor_colour(ictx->ctx.s, p); 2162 break; 2163 case 52: 2164 input_osc_52(ictx, p); 2165 break; 2166 case 104: 2167 input_osc_104(ictx, p); 2168 break; 2169 case 112: 2170 if (*p == '\0') /* no arguments allowed */ 2171 screen_set_cursor_colour(ictx->ctx.s, ""); 2172 break; 2173 default: 2174 log_debug("%s: unknown '%u'", __func__, option); 2175 break; 2176 } 2177} 2178 2179/* APC string started. */ 2180static void 2181input_enter_apc(struct input_ctx *ictx) 2182{ 2183 log_debug("%s", __func__); 2184 2185 input_clear(ictx); 2186 input_start_timer(ictx); 2187 ictx->last = -1; 2188} 2189 2190/* APC terminator (ST) received. */ 2191static void 2192input_exit_apc(struct input_ctx *ictx) 2193{ 2194 if (ictx->flags & INPUT_DISCARD) 2195 return; 2196 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2197 2198 if (!utf8_isvalid(ictx->input_buf)) 2199 return; 2200 screen_set_title(ictx->ctx.s, ictx->input_buf); 2201 server_status_window(ictx->wp->window); 2202} 2203 2204/* Rename string started. */ 2205static void 2206input_enter_rename(struct input_ctx *ictx) 2207{ 2208 log_debug("%s", __func__); 2209 2210 input_clear(ictx); 2211 input_start_timer(ictx); 2212 ictx->last = -1; 2213} 2214 2215/* Rename terminator (ST) received. */ 2216static void 2217input_exit_rename(struct input_ctx *ictx) 2218{ 2219 if (ictx->flags & INPUT_DISCARD) 2220 return; 2221 if (!options_get_number(ictx->wp->window->options, "allow-rename")) 2222 return; 2223 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2224 2225 if (!utf8_isvalid(ictx->input_buf)) 2226 return; 2227 window_set_name(ictx->wp->window, ictx->input_buf); 2228 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2229 server_status_window(ictx->wp->window); 2230} 2231 2232/* Open UTF-8 character. */ 2233static int 2234input_top_bit_set(struct input_ctx *ictx) 2235{ 2236 struct utf8_data *ud = &ictx->utf8data; 2237 2238 ictx->last = -1; 2239 2240 if (!ictx->utf8started) { 2241 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2242 return (0); 2243 ictx->utf8started = 1; 2244 return (0); 2245 } 2246 2247 switch (utf8_append(ud, ictx->ch)) { 2248 case UTF8_MORE: 2249 return (0); 2250 case UTF8_ERROR: 2251 ictx->utf8started = 0; 2252 return (0); 2253 case UTF8_DONE: 2254 break; 2255 } 2256 ictx->utf8started = 0; 2257 2258 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2259 (int)ud->size, ud->data, ud->width); 2260 2261 utf8_copy(&ictx->cell.cell.data, ud); 2262 screen_write_collect_add(&ictx->ctx, &ictx->cell.cell); 2263 2264 return (0); 2265} 2266 2267/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2268static void 2269input_osc_4(struct input_ctx *ictx, const char *p) 2270{ 2271 struct window_pane *wp = ictx->wp; 2272 char *copy, *s, *next = NULL; 2273 long idx; 2274 u_int r, g, b; 2275 2276 copy = s = xstrdup(p); 2277 while (s != NULL && *s != '\0') { 2278 idx = strtol(s, &next, 10); 2279 if (*next++ != ';') 2280 goto bad; 2281 if (idx < 0 || idx >= 0x100) 2282 goto bad; 2283 2284 s = strsep(&next, ";"); 2285 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2286 s = next; 2287 continue; 2288 } 2289 2290 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2291 s = next; 2292 } 2293 2294 free(copy); 2295 return; 2296 2297bad: 2298 log_debug("bad OSC 4: %s", p); 2299 free(copy); 2300} 2301 2302/* Handle the OSC 10 sequence for setting foreground colour. */ 2303static void 2304input_osc_10(struct input_ctx *ictx, const char *p) 2305{ 2306 struct window_pane *wp = ictx->wp; 2307 u_int r, g, b; 2308 2309 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2310 goto bad; 2311 2312 wp->colgc.fg = colour_join_rgb(r, g, b); 2313 wp->flags |= PANE_REDRAW; 2314 2315 return; 2316 2317bad: 2318 log_debug("bad OSC 10: %s", p); 2319} 2320 2321/* Handle the OSC 11 sequence for setting background colour. */ 2322static void 2323input_osc_11(struct input_ctx *ictx, const char *p) 2324{ 2325 struct window_pane *wp = ictx->wp; 2326 u_int r, g, b; 2327 2328 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2329 goto bad; 2330 2331 wp->colgc.bg = colour_join_rgb(r, g, b); 2332 wp->flags |= PANE_REDRAW; 2333 2334 return; 2335 2336bad: 2337 log_debug("bad OSC 11: %s", p); 2338} 2339 2340/* Handle the OSC 52 sequence for setting the clipboard. */ 2341static void 2342input_osc_52(struct input_ctx *ictx, const char *p) 2343{ 2344 struct window_pane *wp = ictx->wp; 2345 char *end; 2346 const char *buf; 2347 size_t len; 2348 u_char *out; 2349 int outlen, state; 2350 struct screen_write_ctx ctx; 2351 struct paste_buffer *pb; 2352 2353 state = options_get_number(global_options, "set-clipboard"); 2354 if (state != 2) 2355 return; 2356 2357 if ((end = strchr(p, ';')) == NULL) 2358 return; 2359 end++; 2360 if (*end == '\0') 2361 return; 2362 log_debug("%s: %s", __func__, end); 2363 2364 if (strcmp(end, "?") == 0) { 2365 if ((pb = paste_get_top(NULL)) != NULL) { 2366 buf = paste_buffer_data(pb, &len); 2367 outlen = 4 * ((len + 2) / 3) + 1; 2368 out = xmalloc(outlen); 2369 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2370 abort(); 2371 free(out); 2372 return; 2373 } 2374 } else { 2375 outlen = 0; 2376 out = NULL; 2377 } 2378 bufferevent_write(wp->event, "\033]52;;", 6); 2379 if (outlen != 0) 2380 bufferevent_write(wp->event, out, outlen); 2381 if (ictx->input_end == INPUT_END_BEL) 2382 bufferevent_write(wp->event, "\007", 1); 2383 else 2384 bufferevent_write(wp->event, "\033\\", 2); 2385 free(out); 2386 return; 2387 } 2388 2389 len = (strlen(end) / 4) * 3; 2390 if (len == 0) 2391 return; 2392 2393 out = xmalloc(len); 2394 if ((outlen = b64_pton(end, out, len)) == -1) { 2395 free(out); 2396 return; 2397 } 2398 2399 screen_write_start(&ctx, wp, NULL); 2400 screen_write_setselection(&ctx, out, outlen); 2401 screen_write_stop(&ctx); 2402 notify_pane("pane-set-clipboard", wp); 2403 2404 paste_add(out, outlen); 2405} 2406 2407/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2408static void 2409input_osc_104(struct input_ctx *ictx, const char *p) 2410{ 2411 struct window_pane *wp = ictx->wp; 2412 char *copy, *s; 2413 long idx; 2414 2415 if (*p == '\0') { 2416 window_pane_reset_palette(wp); 2417 return; 2418 } 2419 2420 copy = s = xstrdup(p); 2421 while (*s != '\0') { 2422 idx = strtol(s, &s, 10); 2423 if (*s != '\0' && *s != ';') 2424 goto bad; 2425 if (idx < 0 || idx >= 0x100) 2426 goto bad; 2427 2428 window_pane_unset_palette(wp, idx); 2429 if (*s == ';') 2430 s++; 2431 } 2432 free(copy); 2433 return; 2434 2435bad: 2436 log_debug("bad OSC 104: %s", p); 2437 free(copy); 2438} 2439