input.c revision 1.129
1/* $OpenBSD: input.c,v 1.129 2017/10/05 13:29:18 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 * http://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 context. */ 62struct input_ctx { 63 struct window_pane *wp; 64 struct screen_write_ctx ctx; 65 66 struct input_cell cell; 67 68 struct input_cell old_cell; 69 u_int old_cx; 70 u_int old_cy; 71 72 u_char interm_buf[4]; 73 size_t interm_len; 74 75 u_char param_buf[64]; 76 size_t param_len; 77 78#define INPUT_BUF_START 32 79#define INPUT_BUF_LIMIT 1048576 80 u_char *input_buf; 81 size_t input_len; 82 size_t input_space; 83 84 int param_list[24]; /* -1 not present */ 85 u_int param_list_len; 86 87 struct utf8_data utf8data; 88 89 int ch; 90 int last; 91 92 int flags; 93#define INPUT_DISCARD 0x1 94 95 const struct input_state *state; 96 97 struct event timer; 98 99 /* 100 * All input received since we were last in the ground state. Sent to 101 * control clients on connection. 102 */ 103 struct evbuffer *since_ground; 104}; 105 106/* Helper functions. */ 107struct input_transition; 108static int input_split(struct input_ctx *); 109static int input_get(struct input_ctx *, u_int, int, int); 110static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 111static void input_set_state(struct window_pane *, 112 const struct input_transition *); 113static void input_reset_cell(struct input_ctx *); 114 115static void input_osc_4(struct window_pane *, const char *); 116static void input_osc_10(struct window_pane *, const char *); 117static void input_osc_11(struct window_pane *, const char *); 118static void input_osc_52(struct window_pane *, const char *); 119static void input_osc_104(struct window_pane *, const char *); 120 121/* Transition entry/exit handlers. */ 122static void input_clear(struct input_ctx *); 123static void input_ground(struct input_ctx *); 124static void input_enter_dcs(struct input_ctx *); 125static void input_enter_osc(struct input_ctx *); 126static void input_exit_osc(struct input_ctx *); 127static void input_enter_apc(struct input_ctx *); 128static void input_exit_apc(struct input_ctx *); 129static void input_enter_rename(struct input_ctx *); 130static void input_exit_rename(struct input_ctx *); 131 132/* Input state handlers. */ 133static int input_print(struct input_ctx *); 134static int input_intermediate(struct input_ctx *); 135static int input_parameter(struct input_ctx *); 136static int input_input(struct input_ctx *); 137static int input_c0_dispatch(struct input_ctx *); 138static int input_esc_dispatch(struct input_ctx *); 139static int input_csi_dispatch(struct input_ctx *); 140static void input_csi_dispatch_rm(struct input_ctx *); 141static void input_csi_dispatch_rm_private(struct input_ctx *); 142static void input_csi_dispatch_sm(struct input_ctx *); 143static void input_csi_dispatch_sm_private(struct input_ctx *); 144static void input_csi_dispatch_winops(struct input_ctx *); 145static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 146static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 147static void input_csi_dispatch_sgr(struct input_ctx *); 148static int input_dcs_dispatch(struct input_ctx *); 149static int input_utf8_open(struct input_ctx *); 150static int input_utf8_add(struct input_ctx *); 151static int input_utf8_close(struct input_ctx *); 152 153/* Command table comparison function. */ 154static int input_table_compare(const void *, const void *); 155 156/* Command table entry. */ 157struct input_table_entry { 158 int ch; 159 const char *interm; 160 int type; 161}; 162 163/* Escape commands. */ 164enum input_esc_type { 165 INPUT_ESC_DECALN, 166 INPUT_ESC_DECKPAM, 167 INPUT_ESC_DECKPNM, 168 INPUT_ESC_DECRC, 169 INPUT_ESC_DECSC, 170 INPUT_ESC_HTS, 171 INPUT_ESC_IND, 172 INPUT_ESC_NEL, 173 INPUT_ESC_RI, 174 INPUT_ESC_RIS, 175 INPUT_ESC_SCSG0_OFF, 176 INPUT_ESC_SCSG0_ON, 177 INPUT_ESC_SCSG1_OFF, 178 INPUT_ESC_SCSG1_ON, 179 INPUT_ESC_ST, 180}; 181 182/* Escape command table. */ 183static const struct input_table_entry input_esc_table[] = { 184 { '0', "(", INPUT_ESC_SCSG0_ON }, 185 { '0', ")", INPUT_ESC_SCSG1_ON }, 186 { '7', "", INPUT_ESC_DECSC }, 187 { '8', "", INPUT_ESC_DECRC }, 188 { '8', "#", INPUT_ESC_DECALN }, 189 { '=', "", INPUT_ESC_DECKPAM }, 190 { '>', "", INPUT_ESC_DECKPNM }, 191 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 192 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 193 { 'D', "", INPUT_ESC_IND }, 194 { 'E', "", INPUT_ESC_NEL }, 195 { 'H', "", INPUT_ESC_HTS }, 196 { 'M', "", INPUT_ESC_RI }, 197 { '\\', "", INPUT_ESC_ST }, 198 { 'c', "", INPUT_ESC_RIS }, 199}; 200 201/* Control (CSI) commands. */ 202enum input_csi_type { 203 INPUT_CSI_CBT, 204 INPUT_CSI_CNL, 205 INPUT_CSI_CPL, 206 INPUT_CSI_CUB, 207 INPUT_CSI_CUD, 208 INPUT_CSI_CUF, 209 INPUT_CSI_CUP, 210 INPUT_CSI_CUU, 211 INPUT_CSI_DA, 212 INPUT_CSI_DA_TWO, 213 INPUT_CSI_DCH, 214 INPUT_CSI_DECSCUSR, 215 INPUT_CSI_DECSTBM, 216 INPUT_CSI_DL, 217 INPUT_CSI_DSR, 218 INPUT_CSI_ECH, 219 INPUT_CSI_ED, 220 INPUT_CSI_EL, 221 INPUT_CSI_HPA, 222 INPUT_CSI_ICH, 223 INPUT_CSI_IL, 224 INPUT_CSI_RCP, 225 INPUT_CSI_REP, 226 INPUT_CSI_RM, 227 INPUT_CSI_RM_PRIVATE, 228 INPUT_CSI_SCP, 229 INPUT_CSI_SGR, 230 INPUT_CSI_SM, 231 INPUT_CSI_SM_PRIVATE, 232 INPUT_CSI_SU, 233 INPUT_CSI_TBC, 234 INPUT_CSI_VPA, 235 INPUT_CSI_WINOPS, 236}; 237 238/* Control (CSI) command table. */ 239static const struct input_table_entry input_csi_table[] = { 240 { '@', "", INPUT_CSI_ICH }, 241 { 'A', "", INPUT_CSI_CUU }, 242 { 'B', "", INPUT_CSI_CUD }, 243 { 'C', "", INPUT_CSI_CUF }, 244 { 'D', "", INPUT_CSI_CUB }, 245 { 'E', "", INPUT_CSI_CNL }, 246 { 'F', "", INPUT_CSI_CPL }, 247 { 'G', "", INPUT_CSI_HPA }, 248 { 'H', "", INPUT_CSI_CUP }, 249 { 'J', "", INPUT_CSI_ED }, 250 { 'K', "", INPUT_CSI_EL }, 251 { 'L', "", INPUT_CSI_IL }, 252 { 'M', "", INPUT_CSI_DL }, 253 { 'P', "", INPUT_CSI_DCH }, 254 { 'S', "", INPUT_CSI_SU }, 255 { 'X', "", INPUT_CSI_ECH }, 256 { 'Z', "", INPUT_CSI_CBT }, 257 { 'b', "", INPUT_CSI_REP }, 258 { 'c', "", INPUT_CSI_DA }, 259 { 'c', ">", INPUT_CSI_DA_TWO }, 260 { 'd', "", INPUT_CSI_VPA }, 261 { 'f', "", INPUT_CSI_CUP }, 262 { 'g', "", INPUT_CSI_TBC }, 263 { 'h', "", INPUT_CSI_SM }, 264 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 265 { 'l', "", INPUT_CSI_RM }, 266 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 267 { 'm', "", INPUT_CSI_SGR }, 268 { 'n', "", INPUT_CSI_DSR }, 269 { 'q', " ", INPUT_CSI_DECSCUSR }, 270 { 'r', "", INPUT_CSI_DECSTBM }, 271 { 's', "", INPUT_CSI_SCP }, 272 { 't', "", INPUT_CSI_WINOPS }, 273 { 'u', "", INPUT_CSI_RCP }, 274}; 275 276/* Input transition. */ 277struct input_transition { 278 int first; 279 int last; 280 281 int (*handler)(struct input_ctx *); 282 const struct input_state *state; 283}; 284 285/* Input state. */ 286struct input_state { 287 const char *name; 288 void (*enter)(struct input_ctx *); 289 void (*exit)(struct input_ctx *); 290 const struct input_transition *transitions; 291}; 292 293/* State transitions available from all states. */ 294#define INPUT_STATE_ANYWHERE \ 295 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 296 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 297 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 298 299/* Forward declarations of state tables. */ 300static const struct input_transition input_state_ground_table[]; 301static const struct input_transition input_state_esc_enter_table[]; 302static const struct input_transition input_state_esc_intermediate_table[]; 303static const struct input_transition input_state_csi_enter_table[]; 304static const struct input_transition input_state_csi_parameter_table[]; 305static const struct input_transition input_state_csi_intermediate_table[]; 306static const struct input_transition input_state_csi_ignore_table[]; 307static const struct input_transition input_state_dcs_enter_table[]; 308static const struct input_transition input_state_dcs_parameter_table[]; 309static const struct input_transition input_state_dcs_intermediate_table[]; 310static const struct input_transition input_state_dcs_handler_table[]; 311static const struct input_transition input_state_dcs_escape_table[]; 312static const struct input_transition input_state_dcs_ignore_table[]; 313static const struct input_transition input_state_osc_string_table[]; 314static const struct input_transition input_state_apc_string_table[]; 315static const struct input_transition input_state_rename_string_table[]; 316static const struct input_transition input_state_consume_st_table[]; 317static const struct input_transition input_state_utf8_three_table[]; 318static const struct input_transition input_state_utf8_two_table[]; 319static const struct input_transition input_state_utf8_one_table[]; 320 321/* ground state definition. */ 322static const struct input_state input_state_ground = { 323 "ground", 324 input_ground, NULL, 325 input_state_ground_table 326}; 327 328/* esc_enter state definition. */ 329static const struct input_state input_state_esc_enter = { 330 "esc_enter", 331 input_clear, NULL, 332 input_state_esc_enter_table 333}; 334 335/* esc_intermediate state definition. */ 336static const struct input_state input_state_esc_intermediate = { 337 "esc_intermediate", 338 NULL, NULL, 339 input_state_esc_intermediate_table 340}; 341 342/* csi_enter state definition. */ 343static const struct input_state input_state_csi_enter = { 344 "csi_enter", 345 input_clear, NULL, 346 input_state_csi_enter_table 347}; 348 349/* csi_parameter state definition. */ 350static const struct input_state input_state_csi_parameter = { 351 "csi_parameter", 352 NULL, NULL, 353 input_state_csi_parameter_table 354}; 355 356/* csi_intermediate state definition. */ 357static const struct input_state input_state_csi_intermediate = { 358 "csi_intermediate", 359 NULL, NULL, 360 input_state_csi_intermediate_table 361}; 362 363/* csi_ignore state definition. */ 364static const struct input_state input_state_csi_ignore = { 365 "csi_ignore", 366 NULL, NULL, 367 input_state_csi_ignore_table 368}; 369 370/* dcs_enter state definition. */ 371static const struct input_state input_state_dcs_enter = { 372 "dcs_enter", 373 input_enter_dcs, NULL, 374 input_state_dcs_enter_table 375}; 376 377/* dcs_parameter state definition. */ 378static const struct input_state input_state_dcs_parameter = { 379 "dcs_parameter", 380 NULL, NULL, 381 input_state_dcs_parameter_table 382}; 383 384/* dcs_intermediate state definition. */ 385static const struct input_state input_state_dcs_intermediate = { 386 "dcs_intermediate", 387 NULL, NULL, 388 input_state_dcs_intermediate_table 389}; 390 391/* dcs_handler state definition. */ 392static const struct input_state input_state_dcs_handler = { 393 "dcs_handler", 394 NULL, NULL, 395 input_state_dcs_handler_table 396}; 397 398/* dcs_escape state definition. */ 399static const struct input_state input_state_dcs_escape = { 400 "dcs_escape", 401 NULL, NULL, 402 input_state_dcs_escape_table 403}; 404 405/* dcs_ignore state definition. */ 406static const struct input_state input_state_dcs_ignore = { 407 "dcs_ignore", 408 NULL, NULL, 409 input_state_dcs_ignore_table 410}; 411 412/* osc_string state definition. */ 413static const struct input_state input_state_osc_string = { 414 "osc_string", 415 input_enter_osc, input_exit_osc, 416 input_state_osc_string_table 417}; 418 419/* apc_string state definition. */ 420static const struct input_state input_state_apc_string = { 421 "apc_string", 422 input_enter_apc, input_exit_apc, 423 input_state_apc_string_table 424}; 425 426/* rename_string state definition. */ 427static const struct input_state input_state_rename_string = { 428 "rename_string", 429 input_enter_rename, input_exit_rename, 430 input_state_rename_string_table 431}; 432 433/* consume_st state definition. */ 434static const struct input_state input_state_consume_st = { 435 "consume_st", 436 input_enter_rename, NULL, /* rename also waits for ST */ 437 input_state_consume_st_table 438}; 439 440/* utf8_three state definition. */ 441static const struct input_state input_state_utf8_three = { 442 "utf8_three", 443 NULL, NULL, 444 input_state_utf8_three_table 445}; 446 447/* utf8_two state definition. */ 448static const struct input_state input_state_utf8_two = { 449 "utf8_two", 450 NULL, NULL, 451 input_state_utf8_two_table 452}; 453 454/* utf8_one state definition. */ 455static const struct input_state input_state_utf8_one = { 456 "utf8_one", 457 NULL, NULL, 458 input_state_utf8_one_table 459}; 460 461/* ground state table. */ 462static const struct input_transition input_state_ground_table[] = { 463 INPUT_STATE_ANYWHERE, 464 465 { 0x00, 0x17, input_c0_dispatch, NULL }, 466 { 0x19, 0x19, input_c0_dispatch, NULL }, 467 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 468 { 0x20, 0x7e, input_print, NULL }, 469 { 0x7f, 0x7f, NULL, NULL }, 470 { 0x80, 0xc1, NULL, NULL }, 471 { 0xc2, 0xdf, input_utf8_open, &input_state_utf8_one }, 472 { 0xe0, 0xef, input_utf8_open, &input_state_utf8_two }, 473 { 0xf0, 0xf4, input_utf8_open, &input_state_utf8_three }, 474 { 0xf5, 0xff, NULL, NULL }, 475 476 { -1, -1, NULL, NULL } 477}; 478 479/* esc_enter state table. */ 480static const struct input_transition input_state_esc_enter_table[] = { 481 INPUT_STATE_ANYWHERE, 482 483 { 0x00, 0x17, input_c0_dispatch, NULL }, 484 { 0x19, 0x19, input_c0_dispatch, NULL }, 485 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 486 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 487 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 488 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 489 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 490 { 0x58, 0x58, NULL, &input_state_consume_st }, 491 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 492 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 493 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 494 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 495 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 496 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 497 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 498 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 499 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 500 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 501 { 0x7f, 0xff, NULL, NULL }, 502 503 { -1, -1, NULL, NULL } 504}; 505 506/* esc_interm state table. */ 507static const struct input_transition input_state_esc_intermediate_table[] = { 508 INPUT_STATE_ANYWHERE, 509 510 { 0x00, 0x17, input_c0_dispatch, NULL }, 511 { 0x19, 0x19, input_c0_dispatch, NULL }, 512 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 513 { 0x20, 0x2f, input_intermediate, NULL }, 514 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 515 { 0x7f, 0xff, NULL, NULL }, 516 517 { -1, -1, NULL, NULL } 518}; 519 520/* csi_enter state table. */ 521static const struct input_transition input_state_csi_enter_table[] = { 522 INPUT_STATE_ANYWHERE, 523 524 { 0x00, 0x17, input_c0_dispatch, NULL }, 525 { 0x19, 0x19, input_c0_dispatch, NULL }, 526 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 527 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 528 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 529 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 530 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 531 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 532 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 533 { 0x7f, 0xff, NULL, NULL }, 534 535 { -1, -1, NULL, NULL } 536}; 537 538/* csi_parameter state table. */ 539static const struct input_transition input_state_csi_parameter_table[] = { 540 INPUT_STATE_ANYWHERE, 541 542 { 0x00, 0x17, input_c0_dispatch, NULL }, 543 { 0x19, 0x19, input_c0_dispatch, NULL }, 544 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 545 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 546 { 0x30, 0x39, input_parameter, NULL }, 547 { 0x3a, 0x3a, NULL, &input_state_csi_ignore }, 548 { 0x3b, 0x3b, input_parameter, NULL }, 549 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 550 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 551 { 0x7f, 0xff, NULL, NULL }, 552 553 { -1, -1, NULL, NULL } 554}; 555 556/* csi_intermediate state table. */ 557static const struct input_transition input_state_csi_intermediate_table[] = { 558 INPUT_STATE_ANYWHERE, 559 560 { 0x00, 0x17, input_c0_dispatch, NULL }, 561 { 0x19, 0x19, input_c0_dispatch, NULL }, 562 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 563 { 0x20, 0x2f, input_intermediate, NULL }, 564 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 565 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 566 { 0x7f, 0xff, NULL, NULL }, 567 568 { -1, -1, NULL, NULL } 569}; 570 571/* csi_ignore state table. */ 572static const struct input_transition input_state_csi_ignore_table[] = { 573 INPUT_STATE_ANYWHERE, 574 575 { 0x00, 0x17, input_c0_dispatch, NULL }, 576 { 0x19, 0x19, input_c0_dispatch, NULL }, 577 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 578 { 0x20, 0x3f, NULL, NULL }, 579 { 0x40, 0x7e, NULL, &input_state_ground }, 580 { 0x7f, 0xff, NULL, NULL }, 581 582 { -1, -1, NULL, NULL } 583}; 584 585/* dcs_enter state table. */ 586static const struct input_transition input_state_dcs_enter_table[] = { 587 INPUT_STATE_ANYWHERE, 588 589 { 0x00, 0x17, NULL, NULL }, 590 { 0x19, 0x19, NULL, NULL }, 591 { 0x1c, 0x1f, NULL, NULL }, 592 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 593 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 594 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 595 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 596 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 597 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 598 { 0x7f, 0xff, NULL, NULL }, 599 600 { -1, -1, NULL, NULL } 601}; 602 603/* dcs_parameter state table. */ 604static const struct input_transition input_state_dcs_parameter_table[] = { 605 INPUT_STATE_ANYWHERE, 606 607 { 0x00, 0x17, NULL, NULL }, 608 { 0x19, 0x19, NULL, NULL }, 609 { 0x1c, 0x1f, NULL, NULL }, 610 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 611 { 0x30, 0x39, input_parameter, NULL }, 612 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 613 { 0x3b, 0x3b, input_parameter, NULL }, 614 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 615 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 616 { 0x7f, 0xff, NULL, NULL }, 617 618 { -1, -1, NULL, NULL } 619}; 620 621/* dcs_interm state table. */ 622static const struct input_transition input_state_dcs_intermediate_table[] = { 623 INPUT_STATE_ANYWHERE, 624 625 { 0x00, 0x17, NULL, NULL }, 626 { 0x19, 0x19, NULL, NULL }, 627 { 0x1c, 0x1f, NULL, NULL }, 628 { 0x20, 0x2f, input_intermediate, NULL }, 629 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 630 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 631 { 0x7f, 0xff, NULL, NULL }, 632 633 { -1, -1, NULL, NULL } 634}; 635 636/* dcs_handler state table. */ 637static const struct input_transition input_state_dcs_handler_table[] = { 638 /* No INPUT_STATE_ANYWHERE */ 639 640 { 0x00, 0x1a, input_input, NULL }, 641 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 642 { 0x1c, 0xff, input_input, NULL }, 643 644 { -1, -1, NULL, NULL } 645}; 646 647/* dcs_escape state table. */ 648static const struct input_transition input_state_dcs_escape_table[] = { 649 /* No INPUT_STATE_ANYWHERE */ 650 651 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 652 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 653 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 654 655 { -1, -1, NULL, NULL } 656}; 657 658/* dcs_ignore state table. */ 659static const struct input_transition input_state_dcs_ignore_table[] = { 660 INPUT_STATE_ANYWHERE, 661 662 { 0x00, 0x17, NULL, NULL }, 663 { 0x19, 0x19, NULL, NULL }, 664 { 0x1c, 0x1f, NULL, NULL }, 665 { 0x20, 0xff, NULL, NULL }, 666 667 { -1, -1, NULL, NULL } 668}; 669 670/* osc_string state table. */ 671static const struct input_transition input_state_osc_string_table[] = { 672 INPUT_STATE_ANYWHERE, 673 674 { 0x00, 0x06, NULL, NULL }, 675 { 0x07, 0x07, NULL, &input_state_ground }, 676 { 0x08, 0x17, NULL, NULL }, 677 { 0x19, 0x19, NULL, NULL }, 678 { 0x1c, 0x1f, NULL, NULL }, 679 { 0x20, 0xff, input_input, NULL }, 680 681 { -1, -1, NULL, NULL } 682}; 683 684/* apc_string state table. */ 685static const struct input_transition input_state_apc_string_table[] = { 686 INPUT_STATE_ANYWHERE, 687 688 { 0x00, 0x17, NULL, NULL }, 689 { 0x19, 0x19, NULL, NULL }, 690 { 0x1c, 0x1f, NULL, NULL }, 691 { 0x20, 0xff, input_input, NULL }, 692 693 { -1, -1, NULL, NULL } 694}; 695 696/* rename_string state table. */ 697static const struct input_transition input_state_rename_string_table[] = { 698 INPUT_STATE_ANYWHERE, 699 700 { 0x00, 0x17, NULL, NULL }, 701 { 0x19, 0x19, NULL, NULL }, 702 { 0x1c, 0x1f, NULL, NULL }, 703 { 0x20, 0xff, input_input, NULL }, 704 705 { -1, -1, NULL, NULL } 706}; 707 708/* consume_st state table. */ 709static const struct input_transition input_state_consume_st_table[] = { 710 INPUT_STATE_ANYWHERE, 711 712 { 0x00, 0x17, NULL, NULL }, 713 { 0x19, 0x19, NULL, NULL }, 714 { 0x1c, 0x1f, NULL, NULL }, 715 { 0x20, 0xff, NULL, NULL }, 716 717 { -1, -1, NULL, NULL } 718}; 719 720/* utf8_three state table. */ 721static const struct input_transition input_state_utf8_three_table[] = { 722 /* No INPUT_STATE_ANYWHERE */ 723 724 { 0x00, 0x7f, NULL, &input_state_ground }, 725 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_two }, 726 { 0xc0, 0xff, NULL, &input_state_ground }, 727 728 { -1, -1, NULL, NULL } 729}; 730 731/* utf8_two state table. */ 732static const struct input_transition input_state_utf8_two_table[] = { 733 /* No INPUT_STATE_ANYWHERE */ 734 735 { 0x00, 0x7f, NULL, &input_state_ground }, 736 { 0x80, 0xbf, input_utf8_add, &input_state_utf8_one }, 737 { 0xc0, 0xff, NULL, &input_state_ground }, 738 739 { -1, -1, NULL, NULL } 740}; 741 742/* utf8_one state table. */ 743static const struct input_transition input_state_utf8_one_table[] = { 744 /* No INPUT_STATE_ANYWHERE */ 745 746 { 0x00, 0x7f, NULL, &input_state_ground }, 747 { 0x80, 0xbf, input_utf8_close, &input_state_ground }, 748 { 0xc0, 0xff, NULL, &input_state_ground }, 749 750 { -1, -1, NULL, NULL } 751}; 752 753/* Input table compare. */ 754static int 755input_table_compare(const void *key, const void *value) 756{ 757 const struct input_ctx *ictx = key; 758 const struct input_table_entry *entry = value; 759 760 if (ictx->ch != entry->ch) 761 return (ictx->ch - entry->ch); 762 return (strcmp(ictx->interm_buf, entry->interm)); 763} 764 765/* 766 * Timer - if this expires then have been waiting for a terminator for too 767 * long, so reset to ground. 768 */ 769static void 770input_timer_callback(__unused int fd, __unused short events, void *arg) 771{ 772 struct input_ctx *ictx = arg; 773 struct window_pane *wp = ictx->wp; 774 775 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name); 776 input_reset(wp, 0); 777} 778 779/* Start the timer. */ 780static void 781input_start_timer(struct input_ctx *ictx) 782{ 783 struct timeval tv = { .tv_usec = 100000 }; 784 785 event_del(&ictx->timer); 786 event_add(&ictx->timer, &tv); 787} 788 789/* Reset cell state to default. */ 790static void 791input_reset_cell(struct input_ctx *ictx) 792{ 793 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 794 ictx->cell.set = 0; 795 ictx->cell.g0set = ictx->cell.g1set = 0; 796 797 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 798 ictx->old_cx = 0; 799 ictx->old_cy = 0; 800} 801 802/* Initialise input parser. */ 803void 804input_init(struct window_pane *wp) 805{ 806 struct input_ctx *ictx; 807 808 ictx = wp->ictx = xcalloc(1, sizeof *ictx); 809 810 ictx->input_space = INPUT_BUF_START; 811 ictx->input_buf = xmalloc(INPUT_BUF_START); 812 813 ictx->since_ground = evbuffer_new(); 814 815 evtimer_set(&ictx->timer, input_timer_callback, ictx); 816 817 input_reset(wp, 0); 818} 819 820/* Destroy input parser. */ 821void 822input_free(struct window_pane *wp) 823{ 824 struct input_ctx *ictx = wp->ictx; 825 826 event_del(&ictx->timer); 827 828 free(ictx->input_buf); 829 evbuffer_free(ictx->since_ground); 830 831 free(ictx); 832 wp->ictx = NULL; 833} 834 835/* Reset input state and clear screen. */ 836void 837input_reset(struct window_pane *wp, int clear) 838{ 839 struct input_ctx *ictx = wp->ictx; 840 841 input_reset_cell(ictx); 842 843 if (clear) { 844 if (wp->mode == NULL) 845 screen_write_start(&ictx->ctx, wp, &wp->base); 846 else 847 screen_write_start(&ictx->ctx, NULL, &wp->base); 848 screen_write_reset(&ictx->ctx); 849 screen_write_stop(&ictx->ctx); 850 } 851 852 input_clear(ictx); 853 854 ictx->last = -1; 855 856 ictx->state = &input_state_ground; 857 ictx->flags = 0; 858} 859 860/* Return pending data. */ 861struct evbuffer * 862input_pending(struct window_pane *wp) 863{ 864 return (wp->ictx->since_ground); 865} 866 867/* Change input state. */ 868static void 869input_set_state(struct window_pane *wp, const struct input_transition *itr) 870{ 871 struct input_ctx *ictx = wp->ictx; 872 873 if (ictx->state->exit != NULL) 874 ictx->state->exit(ictx); 875 ictx->state = itr->state; 876 if (ictx->state->enter != NULL) 877 ictx->state->enter(ictx); 878} 879 880/* Parse input. */ 881void 882input_parse(struct window_pane *wp) 883{ 884 struct input_ctx *ictx = wp->ictx; 885 const struct input_transition *itr; 886 struct evbuffer *evb = wp->event->input; 887 u_char *buf; 888 size_t len, off; 889 890 if (EVBUFFER_LENGTH(evb) == 0) 891 return; 892 893 window_update_activity(wp->window); 894 wp->flags |= PANE_CHANGED; 895 896 /* 897 * Open the screen. Use NULL wp if there is a mode set as don't want to 898 * update the tty. 899 */ 900 if (wp->mode == NULL) 901 screen_write_start(&ictx->ctx, wp, &wp->base); 902 else 903 screen_write_start(&ictx->ctx, NULL, &wp->base); 904 ictx->wp = wp; 905 906 buf = EVBUFFER_DATA(evb); 907 len = EVBUFFER_LENGTH(evb); 908 off = 0; 909 910 notify_input(wp, evb); 911 912 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 913 ictx->state->name, len, (int)len, buf); 914 915 /* Parse the input. */ 916 while (off < len) { 917 ictx->ch = buf[off++]; 918 919 /* Find the transition. */ 920 itr = ictx->state->transitions; 921 while (itr->first != -1 && itr->last != -1) { 922 if (ictx->ch >= itr->first && ictx->ch <= itr->last) 923 break; 924 itr++; 925 } 926 if (itr->first == -1 || itr->last == -1) { 927 /* No transition? Eh? */ 928 fatalx("no transition from state"); 929 } 930 931 /* 932 * Any state except print stops the current collection. This is 933 * an optimization to avoid checking if the attributes have 934 * changed for every character. It will stop unnecessarily for 935 * sequences that don't make a terminal change, but they should 936 * be the minority. 937 */ 938 if (itr->handler != input_print) 939 screen_write_collect_end(&ictx->ctx); 940 941 /* 942 * Execute the handler, if any. Don't switch state if it 943 * returns non-zero. 944 */ 945 if (itr->handler != NULL && itr->handler(ictx) != 0) 946 continue; 947 948 /* And switch state, if necessary. */ 949 if (itr->state != NULL) 950 input_set_state(wp, itr); 951 952 /* If not in ground state, save input. */ 953 if (ictx->state != &input_state_ground) 954 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 955 } 956 957 /* Close the screen. */ 958 screen_write_stop(&ictx->ctx); 959 960 evbuffer_drain(evb, len); 961} 962 963/* Split the parameter list (if any). */ 964static int 965input_split(struct input_ctx *ictx) 966{ 967 const char *errstr; 968 char *ptr, *out; 969 int n; 970 971 ictx->param_list_len = 0; 972 if (ictx->param_len == 0) 973 return (0); 974 975 ptr = ictx->param_buf; 976 while ((out = strsep(&ptr, ";")) != NULL) { 977 if (*out == '\0') 978 n = -1; 979 else { 980 n = strtonum(out, 0, INT_MAX, &errstr); 981 if (errstr != NULL) 982 return (-1); 983 } 984 985 ictx->param_list[ictx->param_list_len++] = n; 986 if (ictx->param_list_len == nitems(ictx->param_list)) 987 return (-1); 988 } 989 990 return (0); 991} 992 993/* Get an argument or return default value. */ 994static int 995input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 996{ 997 int retval; 998 999 if (validx >= ictx->param_list_len) 1000 return (defval); 1001 1002 retval = ictx->param_list[validx]; 1003 if (retval == -1) 1004 return (defval); 1005 if (retval < minval) 1006 return (minval); 1007 return (retval); 1008} 1009 1010/* Reply to terminal query. */ 1011static void 1012input_reply(struct input_ctx *ictx, const char *fmt, ...) 1013{ 1014 va_list ap; 1015 char *reply; 1016 1017 va_start(ap, fmt); 1018 xvasprintf(&reply, fmt, ap); 1019 va_end(ap); 1020 1021 bufferevent_write(ictx->wp->event, reply, strlen(reply)); 1022 free(reply); 1023} 1024 1025/* Clear saved state. */ 1026static void 1027input_clear(struct input_ctx *ictx) 1028{ 1029 event_del(&ictx->timer); 1030 1031 *ictx->interm_buf = '\0'; 1032 ictx->interm_len = 0; 1033 1034 *ictx->param_buf = '\0'; 1035 ictx->param_len = 0; 1036 1037 *ictx->input_buf = '\0'; 1038 ictx->input_len = 0; 1039 1040 ictx->flags &= ~INPUT_DISCARD; 1041} 1042 1043/* Reset for ground state. */ 1044static void 1045input_ground(struct input_ctx *ictx) 1046{ 1047 event_del(&ictx->timer); 1048 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1049 1050 if (ictx->input_space > INPUT_BUF_START) { 1051 ictx->input_space = INPUT_BUF_START; 1052 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1053 } 1054} 1055 1056/* Output this character to the screen. */ 1057static int 1058input_print(struct input_ctx *ictx) 1059{ 1060 int set; 1061 1062 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1063 if (set == 1) 1064 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1065 else 1066 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1067 1068 utf8_set(&ictx->cell.cell.data, ictx->ch); 1069 screen_write_collect_add(&ictx->ctx, &ictx->cell.cell); 1070 ictx->last = ictx->ch; 1071 1072 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1073 1074 return (0); 1075} 1076 1077/* Collect intermediate string. */ 1078static int 1079input_intermediate(struct input_ctx *ictx) 1080{ 1081 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1082 ictx->flags |= INPUT_DISCARD; 1083 else { 1084 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1085 ictx->interm_buf[ictx->interm_len] = '\0'; 1086 } 1087 1088 return (0); 1089} 1090 1091/* Collect parameter string. */ 1092static int 1093input_parameter(struct input_ctx *ictx) 1094{ 1095 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1096 ictx->flags |= INPUT_DISCARD; 1097 else { 1098 ictx->param_buf[ictx->param_len++] = ictx->ch; 1099 ictx->param_buf[ictx->param_len] = '\0'; 1100 } 1101 1102 return (0); 1103} 1104 1105/* Collect input string. */ 1106static int 1107input_input(struct input_ctx *ictx) 1108{ 1109 size_t available; 1110 1111 available = ictx->input_space; 1112 while (ictx->input_len + 1 >= available) { 1113 available *= 2; 1114 if (available > INPUT_BUF_LIMIT) { 1115 ictx->flags |= INPUT_DISCARD; 1116 return (0); 1117 } 1118 ictx->input_buf = xrealloc(ictx->input_buf, available); 1119 ictx->input_space = available; 1120 } 1121 ictx->input_buf[ictx->input_len++] = ictx->ch; 1122 ictx->input_buf[ictx->input_len] = '\0'; 1123 1124 return (0); 1125} 1126 1127/* Execute C0 control sequence. */ 1128static int 1129input_c0_dispatch(struct input_ctx *ictx) 1130{ 1131 struct screen_write_ctx *sctx = &ictx->ctx; 1132 struct window_pane *wp = ictx->wp; 1133 struct screen *s = sctx->s; 1134 1135 log_debug("%s: '%c'", __func__, ictx->ch); 1136 1137 switch (ictx->ch) { 1138 case '\000': /* NUL */ 1139 break; 1140 case '\007': /* BEL */ 1141 alerts_queue(wp->window, WINDOW_BELL); 1142 break; 1143 case '\010': /* BS */ 1144 screen_write_backspace(sctx); 1145 break; 1146 case '\011': /* HT */ 1147 /* Don't tab beyond the end of the line. */ 1148 if (s->cx >= screen_size_x(s) - 1) 1149 break; 1150 1151 /* Find the next tab point, or use the last column if none. */ 1152 do { 1153 s->cx++; 1154 if (bit_test(s->tabs, s->cx)) 1155 break; 1156 } while (s->cx < screen_size_x(s) - 1); 1157 break; 1158 case '\012': /* LF */ 1159 case '\013': /* VT */ 1160 case '\014': /* FF */ 1161 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1162 break; 1163 case '\015': /* CR */ 1164 screen_write_carriagereturn(sctx); 1165 break; 1166 case '\016': /* SO */ 1167 ictx->cell.set = 1; 1168 break; 1169 case '\017': /* SI */ 1170 ictx->cell.set = 0; 1171 break; 1172 default: 1173 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1174 break; 1175 } 1176 1177 ictx->last = -1; 1178 return (0); 1179} 1180 1181/* Execute escape sequence. */ 1182static int 1183input_esc_dispatch(struct input_ctx *ictx) 1184{ 1185 struct screen_write_ctx *sctx = &ictx->ctx; 1186 struct screen *s = sctx->s; 1187 struct input_table_entry *entry; 1188 1189 if (ictx->flags & INPUT_DISCARD) 1190 return (0); 1191 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1192 1193 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1194 sizeof input_esc_table[0], input_table_compare); 1195 if (entry == NULL) { 1196 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1197 return (0); 1198 } 1199 1200 switch (entry->type) { 1201 case INPUT_ESC_RIS: 1202 window_pane_reset_palette(ictx->wp); 1203 input_reset_cell(ictx); 1204 screen_write_reset(sctx); 1205 break; 1206 case INPUT_ESC_IND: 1207 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1208 break; 1209 case INPUT_ESC_NEL: 1210 screen_write_carriagereturn(sctx); 1211 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1212 break; 1213 case INPUT_ESC_HTS: 1214 if (s->cx < screen_size_x(s)) 1215 bit_set(s->tabs, s->cx); 1216 break; 1217 case INPUT_ESC_RI: 1218 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1219 break; 1220 case INPUT_ESC_DECKPAM: 1221 screen_write_mode_set(sctx, MODE_KKEYPAD); 1222 break; 1223 case INPUT_ESC_DECKPNM: 1224 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1225 break; 1226 case INPUT_ESC_DECSC: 1227 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1228 ictx->old_cx = s->cx; 1229 ictx->old_cy = s->cy; 1230 break; 1231 case INPUT_ESC_DECRC: 1232 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1233 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1234 break; 1235 case INPUT_ESC_DECALN: 1236 screen_write_alignmenttest(sctx); 1237 break; 1238 case INPUT_ESC_SCSG0_ON: 1239 ictx->cell.g0set = 1; 1240 break; 1241 case INPUT_ESC_SCSG0_OFF: 1242 ictx->cell.g0set = 0; 1243 break; 1244 case INPUT_ESC_SCSG1_ON: 1245 ictx->cell.g1set = 1; 1246 break; 1247 case INPUT_ESC_SCSG1_OFF: 1248 ictx->cell.g1set = 0; 1249 break; 1250 case INPUT_ESC_ST: 1251 /* ST terminates OSC but the state transition already did it. */ 1252 break; 1253 } 1254 1255 ictx->last = -1; 1256 return (0); 1257} 1258 1259/* Execute control sequence. */ 1260static int 1261input_csi_dispatch(struct input_ctx *ictx) 1262{ 1263 struct screen_write_ctx *sctx = &ictx->ctx; 1264 struct screen *s = sctx->s; 1265 struct input_table_entry *entry; 1266 int i, n, m; 1267 u_int cx; 1268 1269 if (ictx->flags & INPUT_DISCARD) 1270 return (0); 1271 1272 log_debug("%s: '%c' \"%s\" \"%s\"", 1273 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1274 1275 if (input_split(ictx) != 0) 1276 return (0); 1277 1278 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1279 sizeof input_csi_table[0], input_table_compare); 1280 if (entry == NULL) { 1281 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1282 return (0); 1283 } 1284 1285 switch (entry->type) { 1286 case INPUT_CSI_CBT: 1287 /* Find the previous tab point, n times. */ 1288 cx = s->cx; 1289 if (cx > screen_size_x(s) - 1) 1290 cx = screen_size_x(s) - 1; 1291 n = input_get(ictx, 0, 1, 1); 1292 while (cx > 0 && n-- > 0) { 1293 do 1294 cx--; 1295 while (cx > 0 && !bit_test(s->tabs, cx)); 1296 } 1297 s->cx = cx; 1298 break; 1299 case INPUT_CSI_CUB: 1300 screen_write_cursorleft(sctx, input_get(ictx, 0, 1, 1)); 1301 break; 1302 case INPUT_CSI_CUD: 1303 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1304 break; 1305 case INPUT_CSI_CUF: 1306 screen_write_cursorright(sctx, input_get(ictx, 0, 1, 1)); 1307 break; 1308 case INPUT_CSI_CUP: 1309 n = input_get(ictx, 0, 1, 1); 1310 m = input_get(ictx, 1, 1, 1); 1311 screen_write_cursormove(sctx, m - 1, n - 1); 1312 break; 1313 case INPUT_CSI_WINOPS: 1314 input_csi_dispatch_winops(ictx); 1315 break; 1316 case INPUT_CSI_CUU: 1317 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1318 break; 1319 case INPUT_CSI_CNL: 1320 screen_write_carriagereturn(sctx); 1321 screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1)); 1322 break; 1323 case INPUT_CSI_CPL: 1324 screen_write_carriagereturn(sctx); 1325 screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1)); 1326 break; 1327 case INPUT_CSI_DA: 1328 switch (input_get(ictx, 0, 0, 0)) { 1329 case 0: 1330 input_reply(ictx, "\033[?1;2c"); 1331 break; 1332 default: 1333 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1334 break; 1335 } 1336 break; 1337 case INPUT_CSI_DA_TWO: 1338 switch (input_get(ictx, 0, 0, 0)) { 1339 case 0: 1340 input_reply(ictx, "\033[>84;0;0c"); 1341 break; 1342 default: 1343 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1344 break; 1345 } 1346 break; 1347 case INPUT_CSI_ECH: 1348 screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1), 1349 ictx->cell.cell.bg); 1350 break; 1351 case INPUT_CSI_DCH: 1352 screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1), 1353 ictx->cell.cell.bg); 1354 break; 1355 case INPUT_CSI_DECSTBM: 1356 n = input_get(ictx, 0, 1, 1); 1357 m = input_get(ictx, 1, 1, screen_size_y(s)); 1358 screen_write_scrollregion(sctx, n - 1, m - 1); 1359 break; 1360 case INPUT_CSI_DL: 1361 screen_write_deleteline(sctx, input_get(ictx, 0, 1, 1), 1362 ictx->cell.cell.bg); 1363 break; 1364 case INPUT_CSI_DSR: 1365 switch (input_get(ictx, 0, 0, 0)) { 1366 case 5: 1367 input_reply(ictx, "\033[0n"); 1368 break; 1369 case 6: 1370 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1371 break; 1372 default: 1373 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1374 break; 1375 } 1376 break; 1377 case INPUT_CSI_ED: 1378 switch (input_get(ictx, 0, 0, 0)) { 1379 case 0: 1380 screen_write_clearendofscreen(sctx, ictx->cell.cell.bg); 1381 break; 1382 case 1: 1383 screen_write_clearstartofscreen(sctx, ictx->cell.cell.bg); 1384 break; 1385 case 2: 1386 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1387 break; 1388 case 3: 1389 switch (input_get(ictx, 1, 0, 0)) { 1390 case 0: 1391 /* 1392 * Linux console extension to clear history 1393 * (for example before locking the screen). 1394 */ 1395 screen_write_clearhistory(sctx); 1396 break; 1397 } 1398 break; 1399 default: 1400 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1401 break; 1402 } 1403 break; 1404 case INPUT_CSI_EL: 1405 switch (input_get(ictx, 0, 0, 0)) { 1406 case 0: 1407 screen_write_clearendofline(sctx, ictx->cell.cell.bg); 1408 break; 1409 case 1: 1410 screen_write_clearstartofline(sctx, ictx->cell.cell.bg); 1411 break; 1412 case 2: 1413 screen_write_clearline(sctx, ictx->cell.cell.bg); 1414 break; 1415 default: 1416 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1417 break; 1418 } 1419 break; 1420 case INPUT_CSI_HPA: 1421 n = input_get(ictx, 0, 1, 1); 1422 screen_write_cursormove(sctx, n - 1, s->cy); 1423 break; 1424 case INPUT_CSI_ICH: 1425 screen_write_insertcharacter(sctx, input_get(ictx, 0, 1, 1), 1426 ictx->cell.cell.bg); 1427 break; 1428 case INPUT_CSI_IL: 1429 screen_write_insertline(sctx, input_get(ictx, 0, 1, 1), 1430 ictx->cell.cell.bg); 1431 break; 1432 case INPUT_CSI_REP: 1433 if (ictx->last == -1) 1434 break; 1435 ictx->ch = ictx->last; 1436 1437 n = input_get(ictx, 0, 1, 1); 1438 for (i = 0; i < n; i++) 1439 input_print(ictx); 1440 break; 1441 case INPUT_CSI_RCP: 1442 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 1443 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy); 1444 break; 1445 case INPUT_CSI_RM: 1446 input_csi_dispatch_rm(ictx); 1447 break; 1448 case INPUT_CSI_RM_PRIVATE: 1449 input_csi_dispatch_rm_private(ictx); 1450 break; 1451 case INPUT_CSI_SCP: 1452 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 1453 ictx->old_cx = s->cx; 1454 ictx->old_cy = s->cy; 1455 break; 1456 case INPUT_CSI_SGR: 1457 input_csi_dispatch_sgr(ictx); 1458 break; 1459 case INPUT_CSI_SM: 1460 input_csi_dispatch_sm(ictx); 1461 break; 1462 case INPUT_CSI_SM_PRIVATE: 1463 input_csi_dispatch_sm_private(ictx); 1464 break; 1465 case INPUT_CSI_SU: 1466 screen_write_scrollup(sctx, input_get(ictx, 0, 1, 1), 1467 ictx->cell.cell.bg); 1468 break; 1469 case INPUT_CSI_TBC: 1470 switch (input_get(ictx, 0, 0, 0)) { 1471 case 0: 1472 if (s->cx < screen_size_x(s)) 1473 bit_clear(s->tabs, s->cx); 1474 break; 1475 case 3: 1476 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1477 break; 1478 default: 1479 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1480 break; 1481 } 1482 break; 1483 case INPUT_CSI_VPA: 1484 n = input_get(ictx, 0, 1, 1); 1485 screen_write_cursormove(sctx, s->cx, n - 1); 1486 break; 1487 case INPUT_CSI_DECSCUSR: 1488 n = input_get(ictx, 0, 0, 0); 1489 screen_set_cursor_style(s, n); 1490 break; 1491 } 1492 1493 ictx->last = -1; 1494 return (0); 1495} 1496 1497/* Handle CSI RM. */ 1498static void 1499input_csi_dispatch_rm(struct input_ctx *ictx) 1500{ 1501 u_int i; 1502 1503 for (i = 0; i < ictx->param_list_len; i++) { 1504 switch (input_get(ictx, i, 0, -1)) { 1505 case 4: /* IRM */ 1506 screen_write_mode_clear(&ictx->ctx, MODE_INSERT); 1507 break; 1508 case 34: 1509 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1510 break; 1511 default: 1512 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1513 break; 1514 } 1515 } 1516} 1517 1518/* Handle CSI private RM. */ 1519static void 1520input_csi_dispatch_rm_private(struct input_ctx *ictx) 1521{ 1522 struct window_pane *wp = ictx->wp; 1523 u_int i; 1524 1525 for (i = 0; i < ictx->param_list_len; i++) { 1526 switch (input_get(ictx, i, 0, -1)) { 1527 case 1: /* DECCKM */ 1528 screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR); 1529 break; 1530 case 3: /* DECCOLM */ 1531 screen_write_cursormove(&ictx->ctx, 0, 0); 1532 screen_write_clearscreen(&ictx->ctx, 1533 ictx->cell.cell.bg); 1534 break; 1535 case 7: /* DECAWM */ 1536 screen_write_mode_clear(&ictx->ctx, MODE_WRAP); 1537 break; 1538 case 12: 1539 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1540 break; 1541 case 25: /* TCEM */ 1542 screen_write_mode_clear(&ictx->ctx, MODE_CURSOR); 1543 break; 1544 case 1000: 1545 case 1001: 1546 case 1002: 1547 case 1003: 1548 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1549 break; 1550 case 1004: 1551 screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON); 1552 break; 1553 case 1005: 1554 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8); 1555 break; 1556 case 1006: 1557 screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR); 1558 break; 1559 case 47: 1560 case 1047: 1561 window_pane_alternate_off(wp, &ictx->cell.cell, 0); 1562 break; 1563 case 1049: 1564 window_pane_alternate_off(wp, &ictx->cell.cell, 1); 1565 break; 1566 case 2004: 1567 screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE); 1568 break; 1569 default: 1570 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1571 break; 1572 } 1573 } 1574} 1575 1576/* Handle CSI SM. */ 1577static void 1578input_csi_dispatch_sm(struct input_ctx *ictx) 1579{ 1580 u_int i; 1581 1582 for (i = 0; i < ictx->param_list_len; i++) { 1583 switch (input_get(ictx, i, 0, -1)) { 1584 case 4: /* IRM */ 1585 screen_write_mode_set(&ictx->ctx, MODE_INSERT); 1586 break; 1587 case 34: 1588 screen_write_mode_clear(&ictx->ctx, MODE_BLINKING); 1589 break; 1590 default: 1591 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1592 break; 1593 } 1594 } 1595} 1596 1597/* Handle CSI private SM. */ 1598static void 1599input_csi_dispatch_sm_private(struct input_ctx *ictx) 1600{ 1601 struct window_pane *wp = ictx->wp; 1602 u_int i; 1603 1604 for (i = 0; i < ictx->param_list_len; i++) { 1605 switch (input_get(ictx, i, 0, -1)) { 1606 case 1: /* DECCKM */ 1607 screen_write_mode_set(&ictx->ctx, MODE_KCURSOR); 1608 break; 1609 case 3: /* DECCOLM */ 1610 screen_write_cursormove(&ictx->ctx, 0, 0); 1611 screen_write_clearscreen(&ictx->ctx, 1612 ictx->cell.cell.bg); 1613 break; 1614 case 7: /* DECAWM */ 1615 screen_write_mode_set(&ictx->ctx, MODE_WRAP); 1616 break; 1617 case 12: 1618 screen_write_mode_set(&ictx->ctx, MODE_BLINKING); 1619 break; 1620 case 25: /* TCEM */ 1621 screen_write_mode_set(&ictx->ctx, MODE_CURSOR); 1622 break; 1623 case 1000: 1624 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1625 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD); 1626 break; 1627 case 1002: 1628 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1629 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON); 1630 break; 1631 case 1003: 1632 screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES); 1633 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_ALL); 1634 break; 1635 case 1004: 1636 if (ictx->ctx.s->mode & MODE_FOCUSON) 1637 break; 1638 screen_write_mode_set(&ictx->ctx, MODE_FOCUSON); 1639 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1640 break; 1641 case 1005: 1642 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8); 1643 break; 1644 case 1006: 1645 screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR); 1646 break; 1647 case 47: 1648 case 1047: 1649 window_pane_alternate_on(wp, &ictx->cell.cell, 0); 1650 break; 1651 case 1049: 1652 window_pane_alternate_on(wp, &ictx->cell.cell, 1); 1653 break; 1654 case 2004: 1655 screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE); 1656 break; 1657 default: 1658 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1659 break; 1660 } 1661 } 1662} 1663 1664/* Handle CSI window operations. */ 1665static void 1666input_csi_dispatch_winops(struct input_ctx *ictx) 1667{ 1668 struct window_pane *wp = ictx->wp; 1669 int n, m; 1670 1671 m = 0; 1672 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1673 switch (n) { 1674 case 1: 1675 case 2: 1676 case 5: 1677 case 6: 1678 case 7: 1679 case 11: 1680 case 13: 1681 case 14: 1682 case 19: 1683 case 20: 1684 case 21: 1685 case 24: 1686 break; 1687 case 3: 1688 case 4: 1689 case 8: 1690 m++; 1691 if (input_get(ictx, m, 0, -1) == -1) 1692 return; 1693 /* FALLTHROUGH */ 1694 case 9: 1695 case 10: 1696 m++; 1697 if (input_get(ictx, m, 0, -1) == -1) 1698 return; 1699 break; 1700 case 22: 1701 m++; 1702 switch (input_get(ictx, m, 0, -1)) { 1703 case -1: 1704 return; 1705 case 0: 1706 case 2: 1707 screen_push_title(ictx->ctx.s); 1708 break; 1709 } 1710 break; 1711 case 23: 1712 m++; 1713 switch (input_get(ictx, m, 0, -1)) { 1714 case -1: 1715 return; 1716 case 0: 1717 case 2: 1718 screen_pop_title(ictx->ctx.s); 1719 server_status_window(ictx->wp->window); 1720 break; 1721 } 1722 break; 1723 case 18: 1724 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx); 1725 break; 1726 default: 1727 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1728 break; 1729 } 1730 m++; 1731 } 1732} 1733 1734/* Handle CSI SGR for 256 colours. */ 1735static void 1736input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1737{ 1738 struct grid_cell *gc = &ictx->cell.cell; 1739 int c; 1740 1741 (*i)++; 1742 c = input_get(ictx, *i, 0, -1); 1743 if (c == -1) { 1744 if (fgbg == 38) 1745 gc->fg = 8; 1746 else if (fgbg == 48) 1747 gc->bg = 8; 1748 } else { 1749 if (fgbg == 38) 1750 gc->fg = c | COLOUR_FLAG_256; 1751 else if (fgbg == 48) 1752 gc->bg = c | COLOUR_FLAG_256; 1753 } 1754} 1755 1756/* Handle CSI SGR for RGB colours. */ 1757static void 1758input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1759{ 1760 struct grid_cell *gc = &ictx->cell.cell; 1761 int r, g, b; 1762 1763 (*i)++; 1764 r = input_get(ictx, *i, 0, -1); 1765 if (r == -1 || r > 255) 1766 return; 1767 (*i)++; 1768 g = input_get(ictx, *i, 0, -1); 1769 if (g == -1 || g > 255) 1770 return; 1771 (*i)++; 1772 b = input_get(ictx, *i, 0, -1); 1773 if (b == -1 || b > 255) 1774 return; 1775 1776 if (fgbg == 38) 1777 gc->fg = colour_join_rgb(r, g, b); 1778 else if (fgbg == 48) 1779 gc->bg = colour_join_rgb(r, g, b); 1780} 1781 1782/* Handle CSI SGR. */ 1783static void 1784input_csi_dispatch_sgr(struct input_ctx *ictx) 1785{ 1786 struct grid_cell *gc = &ictx->cell.cell; 1787 u_int i; 1788 int n; 1789 1790 if (ictx->param_list_len == 0) { 1791 memcpy(gc, &grid_default_cell, sizeof *gc); 1792 return; 1793 } 1794 1795 for (i = 0; i < ictx->param_list_len; i++) { 1796 n = input_get(ictx, i, 0, 0); 1797 1798 if (n == 38 || n == 48) { 1799 i++; 1800 switch (input_get(ictx, i, 0, -1)) { 1801 case 2: 1802 input_csi_dispatch_sgr_rgb(ictx, n, &i); 1803 break; 1804 case 5: 1805 input_csi_dispatch_sgr_256(ictx, n, &i); 1806 break; 1807 } 1808 continue; 1809 } 1810 1811 switch (n) { 1812 case 0: 1813 case 10: 1814 memcpy(gc, &grid_default_cell, sizeof *gc); 1815 break; 1816 case 1: 1817 gc->attr |= GRID_ATTR_BRIGHT; 1818 break; 1819 case 2: 1820 gc->attr |= GRID_ATTR_DIM; 1821 break; 1822 case 3: 1823 gc->attr |= GRID_ATTR_ITALICS; 1824 break; 1825 case 4: 1826 gc->attr |= GRID_ATTR_UNDERSCORE; 1827 break; 1828 case 5: 1829 gc->attr |= GRID_ATTR_BLINK; 1830 break; 1831 case 7: 1832 gc->attr |= GRID_ATTR_REVERSE; 1833 break; 1834 case 8: 1835 gc->attr |= GRID_ATTR_HIDDEN; 1836 break; 1837 case 9: 1838 gc->attr |= GRID_ATTR_STRIKETHROUGH; 1839 break; 1840 case 22: 1841 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 1842 break; 1843 case 23: 1844 gc->attr &= ~GRID_ATTR_ITALICS; 1845 break; 1846 case 24: 1847 gc->attr &= ~GRID_ATTR_UNDERSCORE; 1848 break; 1849 case 25: 1850 gc->attr &= ~GRID_ATTR_BLINK; 1851 break; 1852 case 27: 1853 gc->attr &= ~GRID_ATTR_REVERSE; 1854 break; 1855 case 28: 1856 gc->attr &= ~GRID_ATTR_HIDDEN; 1857 break; 1858 case 29: 1859 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 1860 break; 1861 case 30: 1862 case 31: 1863 case 32: 1864 case 33: 1865 case 34: 1866 case 35: 1867 case 36: 1868 case 37: 1869 gc->fg = n - 30; 1870 break; 1871 case 39: 1872 gc->fg = 8; 1873 break; 1874 case 40: 1875 case 41: 1876 case 42: 1877 case 43: 1878 case 44: 1879 case 45: 1880 case 46: 1881 case 47: 1882 gc->bg = n - 40; 1883 break; 1884 case 49: 1885 gc->bg = 8; 1886 break; 1887 case 90: 1888 case 91: 1889 case 92: 1890 case 93: 1891 case 94: 1892 case 95: 1893 case 96: 1894 case 97: 1895 gc->fg = n; 1896 break; 1897 case 100: 1898 case 101: 1899 case 102: 1900 case 103: 1901 case 104: 1902 case 105: 1903 case 106: 1904 case 107: 1905 gc->bg = n - 10; 1906 break; 1907 } 1908 } 1909} 1910 1911/* DCS string started. */ 1912static void 1913input_enter_dcs(struct input_ctx *ictx) 1914{ 1915 log_debug("%s", __func__); 1916 1917 input_clear(ictx); 1918 input_start_timer(ictx); 1919 ictx->last = -1; 1920} 1921 1922/* DCS terminator (ST) received. */ 1923static int 1924input_dcs_dispatch(struct input_ctx *ictx) 1925{ 1926 const char prefix[] = "tmux;"; 1927 const u_int prefix_len = (sizeof prefix) - 1; 1928 1929 if (ictx->flags & INPUT_DISCARD) 1930 return (0); 1931 1932 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 1933 1934 /* Check for tmux prefix. */ 1935 if (ictx->input_len >= prefix_len && 1936 strncmp(ictx->input_buf, prefix, prefix_len) == 0) { 1937 screen_write_rawstring(&ictx->ctx, 1938 ictx->input_buf + prefix_len, ictx->input_len - prefix_len); 1939 } 1940 1941 return (0); 1942} 1943 1944/* OSC string started. */ 1945static void 1946input_enter_osc(struct input_ctx *ictx) 1947{ 1948 log_debug("%s", __func__); 1949 1950 input_clear(ictx); 1951 input_start_timer(ictx); 1952 ictx->last = -1; 1953} 1954 1955/* OSC terminator (ST) received. */ 1956static void 1957input_exit_osc(struct input_ctx *ictx) 1958{ 1959 u_char *p = ictx->input_buf; 1960 u_int option; 1961 1962 if (ictx->flags & INPUT_DISCARD) 1963 return; 1964 if (ictx->input_len < 1 || *p < '0' || *p > '9') 1965 return; 1966 1967 log_debug("%s: \"%s\"", __func__, p); 1968 1969 option = 0; 1970 while (*p >= '0' && *p <= '9') 1971 option = option * 10 + *p++ - '0'; 1972 if (*p == ';') 1973 p++; 1974 1975 switch (option) { 1976 case 0: 1977 case 2: 1978 if (utf8_isvalid(p)) { 1979 screen_set_title(ictx->ctx.s, p); 1980 server_status_window(ictx->wp->window); 1981 } 1982 break; 1983 case 4: 1984 input_osc_4(ictx->wp, p); 1985 break; 1986 case 10: 1987 input_osc_10(ictx->wp, p); 1988 break; 1989 case 11: 1990 input_osc_11(ictx->wp, p); 1991 break; 1992 case 12: 1993 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 1994 screen_set_cursor_colour(ictx->ctx.s, p); 1995 break; 1996 case 52: 1997 input_osc_52(ictx->wp, p); 1998 break; 1999 case 104: 2000 input_osc_104(ictx->wp, p); 2001 break; 2002 case 112: 2003 if (*p == '\0') /* no arguments allowed */ 2004 screen_set_cursor_colour(ictx->ctx.s, ""); 2005 break; 2006 default: 2007 log_debug("%s: unknown '%u'", __func__, option); 2008 break; 2009 } 2010} 2011 2012/* APC string started. */ 2013static void 2014input_enter_apc(struct input_ctx *ictx) 2015{ 2016 log_debug("%s", __func__); 2017 2018 input_clear(ictx); 2019 input_start_timer(ictx); 2020 ictx->last = -1; 2021} 2022 2023/* APC terminator (ST) received. */ 2024static void 2025input_exit_apc(struct input_ctx *ictx) 2026{ 2027 if (ictx->flags & INPUT_DISCARD) 2028 return; 2029 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2030 2031 if (!utf8_isvalid(ictx->input_buf)) 2032 return; 2033 screen_set_title(ictx->ctx.s, ictx->input_buf); 2034 server_status_window(ictx->wp->window); 2035} 2036 2037/* Rename string started. */ 2038static void 2039input_enter_rename(struct input_ctx *ictx) 2040{ 2041 log_debug("%s", __func__); 2042 2043 input_clear(ictx); 2044 input_start_timer(ictx); 2045 ictx->last = -1; 2046} 2047 2048/* Rename terminator (ST) received. */ 2049static void 2050input_exit_rename(struct input_ctx *ictx) 2051{ 2052 if (ictx->flags & INPUT_DISCARD) 2053 return; 2054 if (!options_get_number(ictx->wp->window->options, "allow-rename")) 2055 return; 2056 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2057 2058 if (!utf8_isvalid(ictx->input_buf)) 2059 return; 2060 window_set_name(ictx->wp->window, ictx->input_buf); 2061 options_set_number(ictx->wp->window->options, "automatic-rename", 0); 2062 server_status_window(ictx->wp->window); 2063} 2064 2065/* Open UTF-8 character. */ 2066static int 2067input_utf8_open(struct input_ctx *ictx) 2068{ 2069 struct utf8_data *ud = &ictx->utf8data; 2070 2071 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2072 fatalx("UTF-8 open invalid %#x", ictx->ch); 2073 2074 log_debug("%s %hhu", __func__, ud->size); 2075 ictx->last = -1; 2076 2077 return (0); 2078} 2079 2080/* Append to UTF-8 character. */ 2081static int 2082input_utf8_add(struct input_ctx *ictx) 2083{ 2084 struct utf8_data *ud = &ictx->utf8data; 2085 2086 if (utf8_append(ud, ictx->ch) != UTF8_MORE) 2087 fatalx("UTF-8 add invalid %#x", ictx->ch); 2088 2089 log_debug("%s", __func__); 2090 2091 return (0); 2092} 2093 2094/* Close UTF-8 string. */ 2095static int 2096input_utf8_close(struct input_ctx *ictx) 2097{ 2098 struct utf8_data *ud = &ictx->utf8data; 2099 2100 if (utf8_append(ud, ictx->ch) != UTF8_DONE) { 2101 /* 2102 * An error here could be invalid UTF-8 or it could be a 2103 * nonprintable character for which we can't get the 2104 * width. Drop it. 2105 */ 2106 return (0); 2107 } 2108 2109 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2110 (int)ud->size, ud->data, ud->width); 2111 2112 utf8_copy(&ictx->cell.cell.data, ud); 2113 screen_write_collect_add(&ictx->ctx, &ictx->cell.cell); 2114 2115 return (0); 2116} 2117 2118/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2119static void 2120input_osc_4(struct window_pane *wp, const char *p) 2121{ 2122 char *copy, *s, *next = NULL; 2123 long idx; 2124 u_int r, g, b; 2125 2126 copy = s = xstrdup(p); 2127 while (s != NULL && *s != '\0') { 2128 idx = strtol(s, &next, 10); 2129 if (*next++ != ';') 2130 goto bad; 2131 if (idx < 0 || idx >= 0x100) 2132 goto bad; 2133 2134 s = strsep(&next, ";"); 2135 if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) { 2136 s = next; 2137 continue; 2138 } 2139 2140 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b)); 2141 s = next; 2142 } 2143 2144 free(copy); 2145 return; 2146 2147bad: 2148 log_debug("bad OSC 4: %s", p); 2149 free(copy); 2150} 2151 2152/* Handle the OSC 10 sequence for setting background colour. */ 2153static void 2154input_osc_10(struct window_pane *wp, const char *p) 2155{ 2156 u_int r, g, b; 2157 2158 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2159 goto bad; 2160 2161 wp->colgc.fg = colour_join_rgb(r, g, b); 2162 wp->flags |= PANE_REDRAW; 2163 2164 return; 2165 2166bad: 2167 log_debug("bad OSC 10: %s", p); 2168} 2169 2170/* Handle the OSC 11 sequence for setting background colour. */ 2171static void 2172input_osc_11(struct window_pane *wp, const char *p) 2173{ 2174 u_int r, g, b; 2175 2176 if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) 2177 goto bad; 2178 2179 wp->colgc.bg = colour_join_rgb(r, g, b); 2180 wp->flags |= PANE_REDRAW; 2181 2182 return; 2183 2184bad: 2185 log_debug("bad OSC 11: %s", p); 2186} 2187 2188/* Handle the OSC 52 sequence for setting the clipboard. */ 2189static void 2190input_osc_52(struct window_pane *wp, const char *p) 2191{ 2192 char *end; 2193 size_t len; 2194 u_char *out; 2195 int outlen, state; 2196 struct screen_write_ctx ctx; 2197 2198 state = options_get_number(global_options, "set-clipboard"); 2199 if (state != 2) 2200 return; 2201 2202 if ((end = strchr(p, ';')) == NULL) 2203 return; 2204 end++; 2205 if (*end == '\0') 2206 return; 2207 2208 len = (strlen(end) / 4) * 3; 2209 if (len == 0) 2210 return; 2211 2212 out = xmalloc(len); 2213 if ((outlen = b64_pton(end, out, len)) == -1) { 2214 free(out); 2215 return; 2216 } 2217 2218 screen_write_start(&ctx, wp, NULL); 2219 screen_write_setselection(&ctx, out, outlen); 2220 screen_write_stop(&ctx); 2221 notify_pane("pane-set-clipboard", wp); 2222 2223 paste_add(out, outlen); 2224} 2225 2226/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2227static void 2228input_osc_104(struct window_pane *wp, const char *p) 2229{ 2230 char *copy, *s; 2231 long idx; 2232 2233 if (*p == '\0') { 2234 window_pane_reset_palette(wp); 2235 return; 2236 } 2237 2238 copy = s = xstrdup(p); 2239 while (*s != '\0') { 2240 idx = strtol(s, &s, 10); 2241 if (*s != '\0' && *s != ';') 2242 goto bad; 2243 if (idx < 0 || idx >= 0x100) 2244 goto bad; 2245 2246 window_pane_unset_palette(wp, idx); 2247 if (*s == ';') 2248 s++; 2249 } 2250 free(copy); 2251 return; 2252 2253bad: 2254 log_debug("bad OSC 104: %s", p); 2255 free(copy); 2256} 2257