input.c revision 1.190
1/* $OpenBSD: input.c,v 1.190 2021/08/11 20:49:55 nicm Exp $ */ 2 3/* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#include <sys/types.h> 20 21#include <netinet/in.h> 22 23#include <ctype.h> 24#include <resolv.h> 25#include <stdlib.h> 26#include <string.h> 27#include <time.h> 28 29#include "tmux.h" 30 31/* 32 * Based on the description by Paul Williams at: 33 * 34 * https://vt100.net/emu/dec_ansi_parser 35 * 36 * With the following changes: 37 * 38 * - 7-bit only. 39 * 40 * - Support for UTF-8. 41 * 42 * - OSC (but not APC) may be terminated by \007 as well as ST. 43 * 44 * - A state for APC similar to OSC. Some terminals appear to use this to set 45 * the title. 46 * 47 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 48 * pretty stupid but not supporting it is more trouble than it is worth. 49 * 50 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 51 * be passed to the underlying terminals. 52 */ 53 54/* Input parser cell. */ 55struct input_cell { 56 struct grid_cell cell; 57 int set; 58 int g0set; /* 1 if ACS */ 59 int g1set; /* 1 if ACS */ 60}; 61 62/* Input parser argument. */ 63struct input_param { 64 enum { 65 INPUT_MISSING, 66 INPUT_NUMBER, 67 INPUT_STRING 68 } type; 69 union { 70 int num; 71 char *str; 72 }; 73}; 74 75/* Input parser context. */ 76struct input_ctx { 77 struct window_pane *wp; 78 struct bufferevent *event; 79 struct screen_write_ctx ctx; 80 struct colour_palette *palette; 81 82 struct input_cell cell; 83 84 struct input_cell old_cell; 85 u_int old_cx; 86 u_int old_cy; 87 int old_mode; 88 89 u_char interm_buf[4]; 90 size_t interm_len; 91 92 u_char param_buf[64]; 93 size_t param_len; 94 95#define INPUT_BUF_START 32 96#define INPUT_BUF_LIMIT 1048576 97 u_char *input_buf; 98 size_t input_len; 99 size_t input_space; 100 enum { 101 INPUT_END_ST, 102 INPUT_END_BEL 103 } input_end; 104 105 struct input_param param_list[24]; 106 u_int param_list_len; 107 108 struct utf8_data utf8data; 109 int utf8started; 110 111 int ch; 112 int last; 113 114 int flags; 115#define INPUT_DISCARD 0x1 116 117 const struct input_state *state; 118 119 struct event timer; 120 121 /* 122 * All input received since we were last in the ground state. Sent to 123 * control clients on connection. 124 */ 125 struct evbuffer *since_ground; 126}; 127 128/* Helper functions. */ 129struct input_transition; 130static int input_split(struct input_ctx *); 131static int input_get(struct input_ctx *, u_int, int, int); 132static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 133static void input_set_state(struct input_ctx *, 134 const struct input_transition *); 135static void input_reset_cell(struct input_ctx *); 136 137static void input_osc_4(struct input_ctx *, const char *); 138static void input_osc_10(struct input_ctx *, const char *); 139static void input_osc_11(struct input_ctx *, const char *); 140static void input_osc_52(struct input_ctx *, const char *); 141static void input_osc_104(struct input_ctx *, const char *); 142static void input_osc_110(struct input_ctx *, const char *); 143static void input_osc_111(struct input_ctx *, const char *); 144 145/* Transition entry/exit handlers. */ 146static void input_clear(struct input_ctx *); 147static void input_ground(struct input_ctx *); 148static void input_enter_dcs(struct input_ctx *); 149static void input_enter_osc(struct input_ctx *); 150static void input_exit_osc(struct input_ctx *); 151static void input_enter_apc(struct input_ctx *); 152static void input_exit_apc(struct input_ctx *); 153static void input_enter_rename(struct input_ctx *); 154static void input_exit_rename(struct input_ctx *); 155 156/* Input state handlers. */ 157static int input_print(struct input_ctx *); 158static int input_intermediate(struct input_ctx *); 159static int input_parameter(struct input_ctx *); 160static int input_input(struct input_ctx *); 161static int input_c0_dispatch(struct input_ctx *); 162static int input_esc_dispatch(struct input_ctx *); 163static int input_csi_dispatch(struct input_ctx *); 164static void input_csi_dispatch_rm(struct input_ctx *); 165static void input_csi_dispatch_rm_private(struct input_ctx *); 166static void input_csi_dispatch_sm(struct input_ctx *); 167static void input_csi_dispatch_sm_private(struct input_ctx *); 168static void input_csi_dispatch_winops(struct input_ctx *); 169static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 170static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 171static void input_csi_dispatch_sgr(struct input_ctx *); 172static int input_dcs_dispatch(struct input_ctx *); 173static int input_top_bit_set(struct input_ctx *); 174static int input_end_bel(struct input_ctx *); 175 176/* Command table comparison function. */ 177static int input_table_compare(const void *, const void *); 178 179/* Command table entry. */ 180struct input_table_entry { 181 int ch; 182 const char *interm; 183 int type; 184}; 185 186/* Escape commands. */ 187enum input_esc_type { 188 INPUT_ESC_DECALN, 189 INPUT_ESC_DECKPAM, 190 INPUT_ESC_DECKPNM, 191 INPUT_ESC_DECRC, 192 INPUT_ESC_DECSC, 193 INPUT_ESC_HTS, 194 INPUT_ESC_IND, 195 INPUT_ESC_NEL, 196 INPUT_ESC_RI, 197 INPUT_ESC_RIS, 198 INPUT_ESC_SCSG0_OFF, 199 INPUT_ESC_SCSG0_ON, 200 INPUT_ESC_SCSG1_OFF, 201 INPUT_ESC_SCSG1_ON, 202 INPUT_ESC_ST, 203}; 204 205/* Escape command table. */ 206static const struct input_table_entry input_esc_table[] = { 207 { '0', "(", INPUT_ESC_SCSG0_ON }, 208 { '0', ")", INPUT_ESC_SCSG1_ON }, 209 { '7', "", INPUT_ESC_DECSC }, 210 { '8', "", INPUT_ESC_DECRC }, 211 { '8', "#", INPUT_ESC_DECALN }, 212 { '=', "", INPUT_ESC_DECKPAM }, 213 { '>', "", INPUT_ESC_DECKPNM }, 214 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 215 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 216 { 'D', "", INPUT_ESC_IND }, 217 { 'E', "", INPUT_ESC_NEL }, 218 { 'H', "", INPUT_ESC_HTS }, 219 { 'M', "", INPUT_ESC_RI }, 220 { '\\', "", INPUT_ESC_ST }, 221 { 'c', "", INPUT_ESC_RIS }, 222}; 223 224/* Control (CSI) commands. */ 225enum input_csi_type { 226 INPUT_CSI_CBT, 227 INPUT_CSI_CNL, 228 INPUT_CSI_CPL, 229 INPUT_CSI_CUB, 230 INPUT_CSI_CUD, 231 INPUT_CSI_CUF, 232 INPUT_CSI_CUP, 233 INPUT_CSI_CUU, 234 INPUT_CSI_DA, 235 INPUT_CSI_DA_TWO, 236 INPUT_CSI_DCH, 237 INPUT_CSI_DECSCUSR, 238 INPUT_CSI_DECSTBM, 239 INPUT_CSI_DL, 240 INPUT_CSI_DSR, 241 INPUT_CSI_ECH, 242 INPUT_CSI_ED, 243 INPUT_CSI_EL, 244 INPUT_CSI_HPA, 245 INPUT_CSI_ICH, 246 INPUT_CSI_IL, 247 INPUT_CSI_MODOFF, 248 INPUT_CSI_MODSET, 249 INPUT_CSI_RCP, 250 INPUT_CSI_REP, 251 INPUT_CSI_RM, 252 INPUT_CSI_RM_PRIVATE, 253 INPUT_CSI_SCP, 254 INPUT_CSI_SD, 255 INPUT_CSI_SGR, 256 INPUT_CSI_SM, 257 INPUT_CSI_SM_PRIVATE, 258 INPUT_CSI_SU, 259 INPUT_CSI_TBC, 260 INPUT_CSI_VPA, 261 INPUT_CSI_WINOPS, 262 INPUT_CSI_XDA, 263}; 264 265/* Control (CSI) command table. */ 266static const struct input_table_entry input_csi_table[] = { 267 { '@', "", INPUT_CSI_ICH }, 268 { 'A', "", INPUT_CSI_CUU }, 269 { 'B', "", INPUT_CSI_CUD }, 270 { 'C', "", INPUT_CSI_CUF }, 271 { 'D', "", INPUT_CSI_CUB }, 272 { 'E', "", INPUT_CSI_CNL }, 273 { 'F', "", INPUT_CSI_CPL }, 274 { 'G', "", INPUT_CSI_HPA }, 275 { 'H', "", INPUT_CSI_CUP }, 276 { 'J', "", INPUT_CSI_ED }, 277 { 'K', "", INPUT_CSI_EL }, 278 { 'L', "", INPUT_CSI_IL }, 279 { 'M', "", INPUT_CSI_DL }, 280 { 'P', "", INPUT_CSI_DCH }, 281 { 'S', "", INPUT_CSI_SU }, 282 { 'T', "", INPUT_CSI_SD }, 283 { 'X', "", INPUT_CSI_ECH }, 284 { 'Z', "", INPUT_CSI_CBT }, 285 { '`', "", INPUT_CSI_HPA }, 286 { 'b', "", INPUT_CSI_REP }, 287 { 'c', "", INPUT_CSI_DA }, 288 { 'c', ">", INPUT_CSI_DA_TWO }, 289 { 'd', "", INPUT_CSI_VPA }, 290 { 'f', "", INPUT_CSI_CUP }, 291 { 'g', "", INPUT_CSI_TBC }, 292 { 'h', "", INPUT_CSI_SM }, 293 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 294 { 'l', "", INPUT_CSI_RM }, 295 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 296 { 'm', "", INPUT_CSI_SGR }, 297 { 'm', ">", INPUT_CSI_MODSET }, 298 { 'n', "", INPUT_CSI_DSR }, 299 { 'n', ">", INPUT_CSI_MODOFF }, 300 { 'q', " ", INPUT_CSI_DECSCUSR }, 301 { 'q', ">", INPUT_CSI_XDA }, 302 { 'r', "", INPUT_CSI_DECSTBM }, 303 { 's', "", INPUT_CSI_SCP }, 304 { 't', "", INPUT_CSI_WINOPS }, 305 { 'u', "", INPUT_CSI_RCP }, 306}; 307 308/* Input transition. */ 309struct input_transition { 310 int first; 311 int last; 312 313 int (*handler)(struct input_ctx *); 314 const struct input_state *state; 315}; 316 317/* Input state. */ 318struct input_state { 319 const char *name; 320 void (*enter)(struct input_ctx *); 321 void (*exit)(struct input_ctx *); 322 const struct input_transition *transitions; 323}; 324 325/* State transitions available from all states. */ 326#define INPUT_STATE_ANYWHERE \ 327 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 328 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 329 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 330 331/* Forward declarations of state tables. */ 332static const struct input_transition input_state_ground_table[]; 333static const struct input_transition input_state_esc_enter_table[]; 334static const struct input_transition input_state_esc_intermediate_table[]; 335static const struct input_transition input_state_csi_enter_table[]; 336static const struct input_transition input_state_csi_parameter_table[]; 337static const struct input_transition input_state_csi_intermediate_table[]; 338static const struct input_transition input_state_csi_ignore_table[]; 339static const struct input_transition input_state_dcs_enter_table[]; 340static const struct input_transition input_state_dcs_parameter_table[]; 341static const struct input_transition input_state_dcs_intermediate_table[]; 342static const struct input_transition input_state_dcs_handler_table[]; 343static const struct input_transition input_state_dcs_escape_table[]; 344static const struct input_transition input_state_dcs_ignore_table[]; 345static const struct input_transition input_state_osc_string_table[]; 346static const struct input_transition input_state_apc_string_table[]; 347static const struct input_transition input_state_rename_string_table[]; 348static const struct input_transition input_state_consume_st_table[]; 349 350/* ground state definition. */ 351static const struct input_state input_state_ground = { 352 "ground", 353 input_ground, NULL, 354 input_state_ground_table 355}; 356 357/* esc_enter state definition. */ 358static const struct input_state input_state_esc_enter = { 359 "esc_enter", 360 input_clear, NULL, 361 input_state_esc_enter_table 362}; 363 364/* esc_intermediate state definition. */ 365static const struct input_state input_state_esc_intermediate = { 366 "esc_intermediate", 367 NULL, NULL, 368 input_state_esc_intermediate_table 369}; 370 371/* csi_enter state definition. */ 372static const struct input_state input_state_csi_enter = { 373 "csi_enter", 374 input_clear, NULL, 375 input_state_csi_enter_table 376}; 377 378/* csi_parameter state definition. */ 379static const struct input_state input_state_csi_parameter = { 380 "csi_parameter", 381 NULL, NULL, 382 input_state_csi_parameter_table 383}; 384 385/* csi_intermediate state definition. */ 386static const struct input_state input_state_csi_intermediate = { 387 "csi_intermediate", 388 NULL, NULL, 389 input_state_csi_intermediate_table 390}; 391 392/* csi_ignore state definition. */ 393static const struct input_state input_state_csi_ignore = { 394 "csi_ignore", 395 NULL, NULL, 396 input_state_csi_ignore_table 397}; 398 399/* dcs_enter state definition. */ 400static const struct input_state input_state_dcs_enter = { 401 "dcs_enter", 402 input_enter_dcs, NULL, 403 input_state_dcs_enter_table 404}; 405 406/* dcs_parameter state definition. */ 407static const struct input_state input_state_dcs_parameter = { 408 "dcs_parameter", 409 NULL, NULL, 410 input_state_dcs_parameter_table 411}; 412 413/* dcs_intermediate state definition. */ 414static const struct input_state input_state_dcs_intermediate = { 415 "dcs_intermediate", 416 NULL, NULL, 417 input_state_dcs_intermediate_table 418}; 419 420/* dcs_handler state definition. */ 421static const struct input_state input_state_dcs_handler = { 422 "dcs_handler", 423 NULL, NULL, 424 input_state_dcs_handler_table 425}; 426 427/* dcs_escape state definition. */ 428static const struct input_state input_state_dcs_escape = { 429 "dcs_escape", 430 NULL, NULL, 431 input_state_dcs_escape_table 432}; 433 434/* dcs_ignore state definition. */ 435static const struct input_state input_state_dcs_ignore = { 436 "dcs_ignore", 437 NULL, NULL, 438 input_state_dcs_ignore_table 439}; 440 441/* osc_string state definition. */ 442static const struct input_state input_state_osc_string = { 443 "osc_string", 444 input_enter_osc, input_exit_osc, 445 input_state_osc_string_table 446}; 447 448/* apc_string state definition. */ 449static const struct input_state input_state_apc_string = { 450 "apc_string", 451 input_enter_apc, input_exit_apc, 452 input_state_apc_string_table 453}; 454 455/* rename_string state definition. */ 456static const struct input_state input_state_rename_string = { 457 "rename_string", 458 input_enter_rename, input_exit_rename, 459 input_state_rename_string_table 460}; 461 462/* consume_st state definition. */ 463static const struct input_state input_state_consume_st = { 464 "consume_st", 465 input_enter_rename, NULL, /* rename also waits for ST */ 466 input_state_consume_st_table 467}; 468 469/* ground state table. */ 470static const struct input_transition input_state_ground_table[] = { 471 INPUT_STATE_ANYWHERE, 472 473 { 0x00, 0x17, input_c0_dispatch, NULL }, 474 { 0x19, 0x19, input_c0_dispatch, NULL }, 475 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 476 { 0x20, 0x7e, input_print, NULL }, 477 { 0x7f, 0x7f, NULL, NULL }, 478 { 0x80, 0xff, input_top_bit_set, NULL }, 479 480 { -1, -1, NULL, NULL } 481}; 482 483/* esc_enter state table. */ 484static const struct input_transition input_state_esc_enter_table[] = { 485 INPUT_STATE_ANYWHERE, 486 487 { 0x00, 0x17, input_c0_dispatch, NULL }, 488 { 0x19, 0x19, input_c0_dispatch, NULL }, 489 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 490 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 491 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 492 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 493 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 494 { 0x58, 0x58, NULL, &input_state_consume_st }, 495 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 496 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 497 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 498 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 499 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 500 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 501 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 502 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 503 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 504 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 505 { 0x7f, 0xff, NULL, NULL }, 506 507 { -1, -1, NULL, NULL } 508}; 509 510/* esc_intermediate state table. */ 511static const struct input_transition input_state_esc_intermediate_table[] = { 512 INPUT_STATE_ANYWHERE, 513 514 { 0x00, 0x17, input_c0_dispatch, NULL }, 515 { 0x19, 0x19, input_c0_dispatch, NULL }, 516 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 517 { 0x20, 0x2f, input_intermediate, NULL }, 518 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 519 { 0x7f, 0xff, NULL, NULL }, 520 521 { -1, -1, NULL, NULL } 522}; 523 524/* csi_enter state table. */ 525static const struct input_transition input_state_csi_enter_table[] = { 526 INPUT_STATE_ANYWHERE, 527 528 { 0x00, 0x17, input_c0_dispatch, NULL }, 529 { 0x19, 0x19, input_c0_dispatch, NULL }, 530 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 531 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 532 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 533 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 534 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 535 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 536 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 537 { 0x7f, 0xff, NULL, NULL }, 538 539 { -1, -1, NULL, NULL } 540}; 541 542/* csi_parameter state table. */ 543static const struct input_transition input_state_csi_parameter_table[] = { 544 INPUT_STATE_ANYWHERE, 545 546 { 0x00, 0x17, input_c0_dispatch, NULL }, 547 { 0x19, 0x19, input_c0_dispatch, NULL }, 548 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 549 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 550 { 0x30, 0x39, input_parameter, NULL }, 551 { 0x3a, 0x3a, input_parameter, NULL }, 552 { 0x3b, 0x3b, input_parameter, NULL }, 553 { 0x3c, 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_intermediate state table. */ 561static const struct input_transition input_state_csi_intermediate_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, 0x2f, input_intermediate, NULL }, 568 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 569 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 570 { 0x7f, 0xff, NULL, NULL }, 571 572 { -1, -1, NULL, NULL } 573}; 574 575/* csi_ignore state table. */ 576static const struct input_transition input_state_csi_ignore_table[] = { 577 INPUT_STATE_ANYWHERE, 578 579 { 0x00, 0x17, input_c0_dispatch, NULL }, 580 { 0x19, 0x19, input_c0_dispatch, NULL }, 581 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 582 { 0x20, 0x3f, NULL, NULL }, 583 { 0x40, 0x7e, NULL, &input_state_ground }, 584 { 0x7f, 0xff, NULL, NULL }, 585 586 { -1, -1, NULL, NULL } 587}; 588 589/* dcs_enter state table. */ 590static const struct input_transition input_state_dcs_enter_table[] = { 591 INPUT_STATE_ANYWHERE, 592 593 { 0x00, 0x17, NULL, NULL }, 594 { 0x19, 0x19, NULL, NULL }, 595 { 0x1c, 0x1f, NULL, NULL }, 596 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 597 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 598 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 599 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 600 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 601 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 602 { 0x7f, 0xff, NULL, NULL }, 603 604 { -1, -1, NULL, NULL } 605}; 606 607/* dcs_parameter state table. */ 608static const struct input_transition input_state_dcs_parameter_table[] = { 609 INPUT_STATE_ANYWHERE, 610 611 { 0x00, 0x17, NULL, NULL }, 612 { 0x19, 0x19, NULL, NULL }, 613 { 0x1c, 0x1f, NULL, NULL }, 614 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 615 { 0x30, 0x39, input_parameter, NULL }, 616 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 617 { 0x3b, 0x3b, input_parameter, NULL }, 618 { 0x3c, 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_intermediate state table. */ 626static const struct input_transition input_state_dcs_intermediate_table[] = { 627 INPUT_STATE_ANYWHERE, 628 629 { 0x00, 0x17, NULL, NULL }, 630 { 0x19, 0x19, NULL, NULL }, 631 { 0x1c, 0x1f, NULL, NULL }, 632 { 0x20, 0x2f, input_intermediate, NULL }, 633 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 634 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 635 { 0x7f, 0xff, NULL, NULL }, 636 637 { -1, -1, NULL, NULL } 638}; 639 640/* dcs_handler state table. */ 641static const struct input_transition input_state_dcs_handler_table[] = { 642 /* No INPUT_STATE_ANYWHERE */ 643 644 { 0x00, 0x1a, input_input, NULL }, 645 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 646 { 0x1c, 0xff, input_input, NULL }, 647 648 { -1, -1, NULL, NULL } 649}; 650 651/* dcs_escape state table. */ 652static const struct input_transition input_state_dcs_escape_table[] = { 653 /* No INPUT_STATE_ANYWHERE */ 654 655 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 656 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 657 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 658 659 { -1, -1, NULL, NULL } 660}; 661 662/* dcs_ignore state table. */ 663static const struct input_transition input_state_dcs_ignore_table[] = { 664 INPUT_STATE_ANYWHERE, 665 666 { 0x00, 0x17, NULL, NULL }, 667 { 0x19, 0x19, NULL, NULL }, 668 { 0x1c, 0x1f, NULL, NULL }, 669 { 0x20, 0xff, NULL, NULL }, 670 671 { -1, -1, NULL, NULL } 672}; 673 674/* osc_string state table. */ 675static const struct input_transition input_state_osc_string_table[] = { 676 INPUT_STATE_ANYWHERE, 677 678 { 0x00, 0x06, NULL, NULL }, 679 { 0x07, 0x07, input_end_bel, &input_state_ground }, 680 { 0x08, 0x17, NULL, NULL }, 681 { 0x19, 0x19, NULL, NULL }, 682 { 0x1c, 0x1f, NULL, NULL }, 683 { 0x20, 0xff, input_input, NULL }, 684 685 { -1, -1, NULL, NULL } 686}; 687 688/* apc_string state table. */ 689static const struct input_transition input_state_apc_string_table[] = { 690 INPUT_STATE_ANYWHERE, 691 692 { 0x00, 0x17, NULL, NULL }, 693 { 0x19, 0x19, NULL, NULL }, 694 { 0x1c, 0x1f, NULL, NULL }, 695 { 0x20, 0xff, input_input, NULL }, 696 697 { -1, -1, NULL, NULL } 698}; 699 700/* rename_string state table. */ 701static const struct input_transition input_state_rename_string_table[] = { 702 INPUT_STATE_ANYWHERE, 703 704 { 0x00, 0x17, NULL, NULL }, 705 { 0x19, 0x19, NULL, NULL }, 706 { 0x1c, 0x1f, NULL, NULL }, 707 { 0x20, 0xff, input_input, NULL }, 708 709 { -1, -1, NULL, NULL } 710}; 711 712/* consume_st state table. */ 713static const struct input_transition input_state_consume_st_table[] = { 714 INPUT_STATE_ANYWHERE, 715 716 { 0x00, 0x17, NULL, NULL }, 717 { 0x19, 0x19, NULL, NULL }, 718 { 0x1c, 0x1f, NULL, NULL }, 719 { 0x20, 0xff, NULL, NULL }, 720 721 { -1, -1, NULL, NULL } 722}; 723 724/* Input table compare. */ 725static int 726input_table_compare(const void *key, const void *value) 727{ 728 const struct input_ctx *ictx = key; 729 const struct input_table_entry *entry = value; 730 731 if (ictx->ch != entry->ch) 732 return (ictx->ch - entry->ch); 733 return (strcmp(ictx->interm_buf, entry->interm)); 734} 735 736/* 737 * Timer - if this expires then have been waiting for a terminator for too 738 * long, so reset to ground. 739 */ 740static void 741input_timer_callback(__unused int fd, __unused short events, void *arg) 742{ 743 struct input_ctx *ictx = arg; 744 745 log_debug("%s: %s expired" , __func__, ictx->state->name); 746 input_reset(ictx, 0); 747} 748 749/* Start the timer. */ 750static void 751input_start_timer(struct input_ctx *ictx) 752{ 753 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 754 755 event_del(&ictx->timer); 756 event_add(&ictx->timer, &tv); 757} 758 759/* Reset cell state to default. */ 760static void 761input_reset_cell(struct input_ctx *ictx) 762{ 763 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 764 ictx->cell.set = 0; 765 ictx->cell.g0set = ictx->cell.g1set = 0; 766 767 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 768 ictx->old_cx = 0; 769 ictx->old_cy = 0; 770} 771 772/* Save screen state. */ 773static void 774input_save_state(struct input_ctx *ictx) 775{ 776 struct screen_write_ctx *sctx = &ictx->ctx; 777 struct screen *s = sctx->s; 778 779 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 780 ictx->old_cx = s->cx; 781 ictx->old_cy = s->cy; 782 ictx->old_mode = s->mode; 783} 784 785/* Restore screen state. */ 786static void 787input_restore_state(struct input_ctx *ictx) 788{ 789 struct screen_write_ctx *sctx = &ictx->ctx; 790 791 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 792 if (ictx->old_mode & MODE_ORIGIN) 793 screen_write_mode_set(sctx, MODE_ORIGIN); 794 else 795 screen_write_mode_clear(sctx, MODE_ORIGIN); 796 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 797} 798 799/* Initialise input parser. */ 800struct input_ctx * 801input_init(struct window_pane *wp, struct bufferevent *bev, 802 struct colour_palette *palette) 803{ 804 struct input_ctx *ictx; 805 806 ictx = xcalloc(1, sizeof *ictx); 807 ictx->wp = wp; 808 ictx->event = bev; 809 ictx->palette = palette; 810 811 ictx->input_space = INPUT_BUF_START; 812 ictx->input_buf = xmalloc(INPUT_BUF_START); 813 814 ictx->since_ground = evbuffer_new(); 815 if (ictx->since_ground == NULL) 816 fatalx("out of memory"); 817 818 evtimer_set(&ictx->timer, input_timer_callback, ictx); 819 820 input_reset(ictx, 0); 821 return (ictx); 822} 823 824/* Destroy input parser. */ 825void 826input_free(struct input_ctx *ictx) 827{ 828 u_int i; 829 830 for (i = 0; i < ictx->param_list_len; i++) { 831 if (ictx->param_list[i].type == INPUT_STRING) 832 free(ictx->param_list[i].str); 833 } 834 835 event_del(&ictx->timer); 836 837 free(ictx->input_buf); 838 evbuffer_free(ictx->since_ground); 839 840 free(ictx); 841} 842 843/* Reset input state and clear screen. */ 844void 845input_reset(struct input_ctx *ictx, int clear) 846{ 847 struct screen_write_ctx *sctx = &ictx->ctx; 848 struct window_pane *wp = ictx->wp; 849 850 input_reset_cell(ictx); 851 852 if (clear && wp != NULL) { 853 if (TAILQ_EMPTY(&wp->modes)) 854 screen_write_start_pane(sctx, wp, &wp->base); 855 else 856 screen_write_start(sctx, &wp->base); 857 screen_write_reset(sctx); 858 screen_write_stop(sctx); 859 } 860 861 input_clear(ictx); 862 863 ictx->last = -1; 864 865 ictx->state = &input_state_ground; 866 ictx->flags = 0; 867} 868 869/* Return pending data. */ 870struct evbuffer * 871input_pending(struct input_ctx *ictx) 872{ 873 return (ictx->since_ground); 874} 875 876/* Change input state. */ 877static void 878input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 879{ 880 if (ictx->state->exit != NULL) 881 ictx->state->exit(ictx); 882 ictx->state = itr->state; 883 if (ictx->state->enter != NULL) 884 ictx->state->enter(ictx); 885} 886 887/* Parse data. */ 888static void 889input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 890{ 891 struct screen_write_ctx *sctx = &ictx->ctx; 892 const struct input_state *state = NULL; 893 const struct input_transition *itr = NULL; 894 size_t off = 0; 895 896 /* Parse the input. */ 897 while (off < len) { 898 ictx->ch = buf[off++]; 899 900 /* Find the transition. */ 901 if (ictx->state != state || 902 itr == NULL || 903 ictx->ch < itr->first || 904 ictx->ch > itr->last) { 905 itr = ictx->state->transitions; 906 while (itr->first != -1 && itr->last != -1) { 907 if (ictx->ch >= itr->first && 908 ictx->ch <= itr->last) 909 break; 910 itr++; 911 } 912 if (itr->first == -1 || itr->last == -1) { 913 /* No transition? Eh? */ 914 fatalx("no transition from state"); 915 } 916 } 917 state = ictx->state; 918 919 /* 920 * Any state except print stops the current collection. This is 921 * an optimization to avoid checking if the attributes have 922 * changed for every character. It will stop unnecessarily for 923 * sequences that don't make a terminal change, but they should 924 * be the minority. 925 */ 926 if (itr->handler != input_print) 927 screen_write_collect_end(sctx); 928 929 /* 930 * Execute the handler, if any. Don't switch state if it 931 * returns non-zero. 932 */ 933 if (itr->handler != NULL && itr->handler(ictx) != 0) 934 continue; 935 936 /* And switch state, if necessary. */ 937 if (itr->state != NULL) 938 input_set_state(ictx, itr); 939 940 /* If not in ground state, save input. */ 941 if (ictx->state != &input_state_ground) 942 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 943 } 944} 945 946/* Parse input from pane. */ 947void 948input_parse_pane(struct window_pane *wp) 949{ 950 void *new_data; 951 size_t new_size; 952 953 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 954 input_parse_buffer(wp, new_data, new_size); 955 window_pane_update_used_data(wp, &wp->offset, new_size); 956} 957 958/* Parse given input. */ 959void 960input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 961{ 962 struct input_ctx *ictx = wp->ictx; 963 struct screen_write_ctx *sctx = &ictx->ctx; 964 965 if (len == 0) 966 return; 967 968 window_update_activity(wp->window); 969 wp->flags |= PANE_CHANGED; 970 971 /* NULL wp if there is a mode set as don't want to update the tty. */ 972 if (TAILQ_EMPTY(&wp->modes)) 973 screen_write_start_pane(sctx, wp, &wp->base); 974 else 975 screen_write_start(sctx, &wp->base); 976 977 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 978 ictx->state->name, len, (int)len, buf); 979 980 input_parse(ictx, buf, len); 981 screen_write_stop(sctx); 982} 983 984/* Parse given input for screen. */ 985void 986input_parse_screen(struct input_ctx *ictx, struct screen *s, 987 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 988{ 989 struct screen_write_ctx *sctx = &ictx->ctx; 990 991 if (len == 0) 992 return; 993 994 screen_write_start_callback(sctx, s, cb, arg); 995 input_parse(ictx, buf, len); 996 screen_write_stop(sctx); 997} 998 999/* Split the parameter list (if any). */ 1000static int 1001input_split(struct input_ctx *ictx) 1002{ 1003 const char *errstr; 1004 char *ptr, *out; 1005 struct input_param *ip; 1006 u_int i; 1007 1008 for (i = 0; i < ictx->param_list_len; i++) { 1009 if (ictx->param_list[i].type == INPUT_STRING) 1010 free(ictx->param_list[i].str); 1011 } 1012 ictx->param_list_len = 0; 1013 1014 if (ictx->param_len == 0) 1015 return (0); 1016 ip = &ictx->param_list[0]; 1017 1018 ptr = ictx->param_buf; 1019 while ((out = strsep(&ptr, ";")) != NULL) { 1020 if (*out == '\0') 1021 ip->type = INPUT_MISSING; 1022 else { 1023 if (strchr(out, ':') != NULL) { 1024 ip->type = INPUT_STRING; 1025 ip->str = xstrdup(out); 1026 } else { 1027 ip->type = INPUT_NUMBER; 1028 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1029 if (errstr != NULL) 1030 return (-1); 1031 } 1032 } 1033 ip = &ictx->param_list[++ictx->param_list_len]; 1034 if (ictx->param_list_len == nitems(ictx->param_list)) 1035 return (-1); 1036 } 1037 1038 for (i = 0; i < ictx->param_list_len; i++) { 1039 ip = &ictx->param_list[i]; 1040 if (ip->type == INPUT_MISSING) 1041 log_debug("parameter %u: missing", i); 1042 else if (ip->type == INPUT_STRING) 1043 log_debug("parameter %u: string %s", i, ip->str); 1044 else if (ip->type == INPUT_NUMBER) 1045 log_debug("parameter %u: number %d", i, ip->num); 1046 } 1047 1048 return (0); 1049} 1050 1051/* Get an argument or return default value. */ 1052static int 1053input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1054{ 1055 struct input_param *ip; 1056 int retval; 1057 1058 if (validx >= ictx->param_list_len) 1059 return (defval); 1060 ip = &ictx->param_list[validx]; 1061 if (ip->type == INPUT_MISSING) 1062 return (defval); 1063 if (ip->type == INPUT_STRING) 1064 return (-1); 1065 retval = ip->num; 1066 if (retval < minval) 1067 return (minval); 1068 return (retval); 1069} 1070 1071/* Reply to terminal query. */ 1072static void 1073input_reply(struct input_ctx *ictx, const char *fmt, ...) 1074{ 1075 struct bufferevent *bev = ictx->event; 1076 va_list ap; 1077 char *reply; 1078 1079 va_start(ap, fmt); 1080 xvasprintf(&reply, fmt, ap); 1081 va_end(ap); 1082 1083 bufferevent_write(bev, reply, strlen(reply)); 1084 free(reply); 1085} 1086 1087/* Clear saved state. */ 1088static void 1089input_clear(struct input_ctx *ictx) 1090{ 1091 event_del(&ictx->timer); 1092 1093 *ictx->interm_buf = '\0'; 1094 ictx->interm_len = 0; 1095 1096 *ictx->param_buf = '\0'; 1097 ictx->param_len = 0; 1098 1099 *ictx->input_buf = '\0'; 1100 ictx->input_len = 0; 1101 1102 ictx->input_end = INPUT_END_ST; 1103 1104 ictx->flags &= ~INPUT_DISCARD; 1105} 1106 1107/* Reset for ground state. */ 1108static void 1109input_ground(struct input_ctx *ictx) 1110{ 1111 event_del(&ictx->timer); 1112 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1113 1114 if (ictx->input_space > INPUT_BUF_START) { 1115 ictx->input_space = INPUT_BUF_START; 1116 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1117 } 1118} 1119 1120/* Output this character to the screen. */ 1121static int 1122input_print(struct input_ctx *ictx) 1123{ 1124 struct screen_write_ctx *sctx = &ictx->ctx; 1125 int set; 1126 1127 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1128 1129 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1130 if (set == 1) 1131 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1132 else 1133 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1134 1135 utf8_set(&ictx->cell.cell.data, ictx->ch); 1136 screen_write_collect_add(sctx, &ictx->cell.cell); 1137 ictx->last = ictx->ch; 1138 1139 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1140 1141 return (0); 1142} 1143 1144/* Collect intermediate string. */ 1145static int 1146input_intermediate(struct input_ctx *ictx) 1147{ 1148 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1149 ictx->flags |= INPUT_DISCARD; 1150 else { 1151 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1152 ictx->interm_buf[ictx->interm_len] = '\0'; 1153 } 1154 1155 return (0); 1156} 1157 1158/* Collect parameter string. */ 1159static int 1160input_parameter(struct input_ctx *ictx) 1161{ 1162 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1163 ictx->flags |= INPUT_DISCARD; 1164 else { 1165 ictx->param_buf[ictx->param_len++] = ictx->ch; 1166 ictx->param_buf[ictx->param_len] = '\0'; 1167 } 1168 1169 return (0); 1170} 1171 1172/* Collect input string. */ 1173static int 1174input_input(struct input_ctx *ictx) 1175{ 1176 size_t available; 1177 1178 available = ictx->input_space; 1179 while (ictx->input_len + 1 >= available) { 1180 available *= 2; 1181 if (available > INPUT_BUF_LIMIT) { 1182 ictx->flags |= INPUT_DISCARD; 1183 return (0); 1184 } 1185 ictx->input_buf = xrealloc(ictx->input_buf, available); 1186 ictx->input_space = available; 1187 } 1188 ictx->input_buf[ictx->input_len++] = ictx->ch; 1189 ictx->input_buf[ictx->input_len] = '\0'; 1190 1191 return (0); 1192} 1193 1194/* Execute C0 control sequence. */ 1195static int 1196input_c0_dispatch(struct input_ctx *ictx) 1197{ 1198 struct screen_write_ctx *sctx = &ictx->ctx; 1199 struct window_pane *wp = ictx->wp; 1200 struct screen *s = sctx->s; 1201 1202 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1203 1204 log_debug("%s: '%c'", __func__, ictx->ch); 1205 1206 switch (ictx->ch) { 1207 case '\000': /* NUL */ 1208 break; 1209 case '\007': /* BEL */ 1210 if (wp != NULL) 1211 alerts_queue(wp->window, WINDOW_BELL); 1212 break; 1213 case '\010': /* BS */ 1214 screen_write_backspace(sctx); 1215 break; 1216 case '\011': /* HT */ 1217 /* Don't tab beyond the end of the line. */ 1218 if (s->cx >= screen_size_x(s) - 1) 1219 break; 1220 1221 /* Find the next tab point, or use the last column if none. */ 1222 do { 1223 s->cx++; 1224 if (bit_test(s->tabs, s->cx)) 1225 break; 1226 } while (s->cx < screen_size_x(s) - 1); 1227 break; 1228 case '\012': /* LF */ 1229 case '\013': /* VT */ 1230 case '\014': /* FF */ 1231 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1232 if (s->mode & MODE_CRLF) 1233 screen_write_carriagereturn(sctx); 1234 break; 1235 case '\015': /* CR */ 1236 screen_write_carriagereturn(sctx); 1237 break; 1238 case '\016': /* SO */ 1239 ictx->cell.set = 1; 1240 break; 1241 case '\017': /* SI */ 1242 ictx->cell.set = 0; 1243 break; 1244 default: 1245 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1246 break; 1247 } 1248 1249 ictx->last = -1; 1250 return (0); 1251} 1252 1253/* Execute escape sequence. */ 1254static int 1255input_esc_dispatch(struct input_ctx *ictx) 1256{ 1257 struct screen_write_ctx *sctx = &ictx->ctx; 1258 struct screen *s = sctx->s; 1259 struct input_table_entry *entry; 1260 1261 if (ictx->flags & INPUT_DISCARD) 1262 return (0); 1263 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1264 1265 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1266 sizeof input_esc_table[0], input_table_compare); 1267 if (entry == NULL) { 1268 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1269 return (0); 1270 } 1271 1272 switch (entry->type) { 1273 case INPUT_ESC_RIS: 1274 colour_palette_clear(ictx->palette); 1275 input_reset_cell(ictx); 1276 screen_write_reset(sctx); 1277 screen_write_fullredraw(sctx); 1278 break; 1279 case INPUT_ESC_IND: 1280 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1281 break; 1282 case INPUT_ESC_NEL: 1283 screen_write_carriagereturn(sctx); 1284 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1285 break; 1286 case INPUT_ESC_HTS: 1287 if (s->cx < screen_size_x(s)) 1288 bit_set(s->tabs, s->cx); 1289 break; 1290 case INPUT_ESC_RI: 1291 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1292 break; 1293 case INPUT_ESC_DECKPAM: 1294 screen_write_mode_set(sctx, MODE_KKEYPAD); 1295 break; 1296 case INPUT_ESC_DECKPNM: 1297 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1298 break; 1299 case INPUT_ESC_DECSC: 1300 input_save_state(ictx); 1301 break; 1302 case INPUT_ESC_DECRC: 1303 input_restore_state(ictx); 1304 break; 1305 case INPUT_ESC_DECALN: 1306 screen_write_alignmenttest(sctx); 1307 break; 1308 case INPUT_ESC_SCSG0_ON: 1309 ictx->cell.g0set = 1; 1310 break; 1311 case INPUT_ESC_SCSG0_OFF: 1312 ictx->cell.g0set = 0; 1313 break; 1314 case INPUT_ESC_SCSG1_ON: 1315 ictx->cell.g1set = 1; 1316 break; 1317 case INPUT_ESC_SCSG1_OFF: 1318 ictx->cell.g1set = 0; 1319 break; 1320 case INPUT_ESC_ST: 1321 /* ST terminates OSC but the state transition already did it. */ 1322 break; 1323 } 1324 1325 ictx->last = -1; 1326 return (0); 1327} 1328 1329/* Execute control sequence. */ 1330static int 1331input_csi_dispatch(struct input_ctx *ictx) 1332{ 1333 struct screen_write_ctx *sctx = &ictx->ctx; 1334 struct screen *s = sctx->s; 1335 struct input_table_entry *entry; 1336 int i, n, m; 1337 u_int cx, bg = ictx->cell.cell.bg; 1338 1339 if (ictx->flags & INPUT_DISCARD) 1340 return (0); 1341 1342 log_debug("%s: '%c' \"%s\" \"%s\"", 1343 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1344 1345 if (input_split(ictx) != 0) 1346 return (0); 1347 1348 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1349 sizeof input_csi_table[0], input_table_compare); 1350 if (entry == NULL) { 1351 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1352 return (0); 1353 } 1354 1355 switch (entry->type) { 1356 case INPUT_CSI_CBT: 1357 /* Find the previous tab point, n times. */ 1358 cx = s->cx; 1359 if (cx > screen_size_x(s) - 1) 1360 cx = screen_size_x(s) - 1; 1361 n = input_get(ictx, 0, 1, 1); 1362 if (n == -1) 1363 break; 1364 while (cx > 0 && n-- > 0) { 1365 do 1366 cx--; 1367 while (cx > 0 && !bit_test(s->tabs, cx)); 1368 } 1369 s->cx = cx; 1370 break; 1371 case INPUT_CSI_CUB: 1372 n = input_get(ictx, 0, 1, 1); 1373 if (n != -1) 1374 screen_write_cursorleft(sctx, n); 1375 break; 1376 case INPUT_CSI_CUD: 1377 n = input_get(ictx, 0, 1, 1); 1378 if (n != -1) 1379 screen_write_cursordown(sctx, n); 1380 break; 1381 case INPUT_CSI_CUF: 1382 n = input_get(ictx, 0, 1, 1); 1383 if (n != -1) 1384 screen_write_cursorright(sctx, n); 1385 break; 1386 case INPUT_CSI_CUP: 1387 n = input_get(ictx, 0, 1, 1); 1388 m = input_get(ictx, 1, 1, 1); 1389 if (n != -1 && m != -1) 1390 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1391 break; 1392 case INPUT_CSI_MODSET: 1393 n = input_get(ictx, 0, 0, 0); 1394 m = input_get(ictx, 1, 0, 0); 1395 if (options_get_number(global_options, "extended-keys") == 2) 1396 break; 1397 if (n == 0 || (n == 4 && m == 0)) 1398 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1399 else if (n == 4 && (m == 1 || m == 2)) 1400 screen_write_mode_set(sctx, MODE_KEXTENDED); 1401 break; 1402 case INPUT_CSI_MODOFF: 1403 n = input_get(ictx, 0, 0, 0); 1404 if (n == 4) 1405 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1406 break; 1407 case INPUT_CSI_WINOPS: 1408 input_csi_dispatch_winops(ictx); 1409 break; 1410 case INPUT_CSI_CUU: 1411 n = input_get(ictx, 0, 1, 1); 1412 if (n != -1) 1413 screen_write_cursorup(sctx, n); 1414 break; 1415 case INPUT_CSI_CNL: 1416 n = input_get(ictx, 0, 1, 1); 1417 if (n != -1) { 1418 screen_write_carriagereturn(sctx); 1419 screen_write_cursordown(sctx, n); 1420 } 1421 break; 1422 case INPUT_CSI_CPL: 1423 n = input_get(ictx, 0, 1, 1); 1424 if (n != -1) { 1425 screen_write_carriagereturn(sctx); 1426 screen_write_cursorup(sctx, n); 1427 } 1428 break; 1429 case INPUT_CSI_DA: 1430 switch (input_get(ictx, 0, 0, 0)) { 1431 case -1: 1432 break; 1433 case 0: 1434 input_reply(ictx, "\033[?1;2c"); 1435 break; 1436 default: 1437 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1438 break; 1439 } 1440 break; 1441 case INPUT_CSI_DA_TWO: 1442 switch (input_get(ictx, 0, 0, 0)) { 1443 case -1: 1444 break; 1445 case 0: 1446 input_reply(ictx, "\033[>84;0;0c"); 1447 break; 1448 default: 1449 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1450 break; 1451 } 1452 break; 1453 case INPUT_CSI_ECH: 1454 n = input_get(ictx, 0, 1, 1); 1455 if (n != -1) 1456 screen_write_clearcharacter(sctx, n, bg); 1457 break; 1458 case INPUT_CSI_DCH: 1459 n = input_get(ictx, 0, 1, 1); 1460 if (n != -1) 1461 screen_write_deletecharacter(sctx, n, bg); 1462 break; 1463 case INPUT_CSI_DECSTBM: 1464 n = input_get(ictx, 0, 1, 1); 1465 m = input_get(ictx, 1, 1, screen_size_y(s)); 1466 if (n != -1 && m != -1) 1467 screen_write_scrollregion(sctx, n - 1, m - 1); 1468 break; 1469 case INPUT_CSI_DL: 1470 n = input_get(ictx, 0, 1, 1); 1471 if (n != -1) 1472 screen_write_deleteline(sctx, n, bg); 1473 break; 1474 case INPUT_CSI_DSR: 1475 switch (input_get(ictx, 0, 0, 0)) { 1476 case -1: 1477 break; 1478 case 5: 1479 input_reply(ictx, "\033[0n"); 1480 break; 1481 case 6: 1482 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1483 break; 1484 default: 1485 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1486 break; 1487 } 1488 break; 1489 case INPUT_CSI_ED: 1490 switch (input_get(ictx, 0, 0, 0)) { 1491 case -1: 1492 break; 1493 case 0: 1494 screen_write_clearendofscreen(sctx, bg); 1495 break; 1496 case 1: 1497 screen_write_clearstartofscreen(sctx, bg); 1498 break; 1499 case 2: 1500 screen_write_clearscreen(sctx, bg); 1501 break; 1502 case 3: 1503 if (input_get(ictx, 1, 0, 0) == 0) { 1504 /* 1505 * Linux console extension to clear history 1506 * (for example before locking the screen). 1507 */ 1508 screen_write_clearhistory(sctx); 1509 } 1510 break; 1511 default: 1512 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1513 break; 1514 } 1515 break; 1516 case INPUT_CSI_EL: 1517 switch (input_get(ictx, 0, 0, 0)) { 1518 case -1: 1519 break; 1520 case 0: 1521 screen_write_clearendofline(sctx, bg); 1522 break; 1523 case 1: 1524 screen_write_clearstartofline(sctx, bg); 1525 break; 1526 case 2: 1527 screen_write_clearline(sctx, bg); 1528 break; 1529 default: 1530 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1531 break; 1532 } 1533 break; 1534 case INPUT_CSI_HPA: 1535 n = input_get(ictx, 0, 1, 1); 1536 if (n != -1) 1537 screen_write_cursormove(sctx, n - 1, -1, 1); 1538 break; 1539 case INPUT_CSI_ICH: 1540 n = input_get(ictx, 0, 1, 1); 1541 if (n != -1) 1542 screen_write_insertcharacter(sctx, n, bg); 1543 break; 1544 case INPUT_CSI_IL: 1545 n = input_get(ictx, 0, 1, 1); 1546 if (n != -1) 1547 screen_write_insertline(sctx, n, bg); 1548 break; 1549 case INPUT_CSI_REP: 1550 n = input_get(ictx, 0, 1, 1); 1551 if (n == -1) 1552 break; 1553 1554 m = screen_size_x(s) - s->cx; 1555 if (n > m) 1556 n = m; 1557 1558 if (ictx->last == -1) 1559 break; 1560 ictx->ch = ictx->last; 1561 1562 for (i = 0; i < n; i++) 1563 input_print(ictx); 1564 break; 1565 case INPUT_CSI_RCP: 1566 input_restore_state(ictx); 1567 break; 1568 case INPUT_CSI_RM: 1569 input_csi_dispatch_rm(ictx); 1570 break; 1571 case INPUT_CSI_RM_PRIVATE: 1572 input_csi_dispatch_rm_private(ictx); 1573 break; 1574 case INPUT_CSI_SCP: 1575 input_save_state(ictx); 1576 break; 1577 case INPUT_CSI_SGR: 1578 input_csi_dispatch_sgr(ictx); 1579 break; 1580 case INPUT_CSI_SM: 1581 input_csi_dispatch_sm(ictx); 1582 break; 1583 case INPUT_CSI_SM_PRIVATE: 1584 input_csi_dispatch_sm_private(ictx); 1585 break; 1586 case INPUT_CSI_SU: 1587 n = input_get(ictx, 0, 1, 1); 1588 if (n != -1) 1589 screen_write_scrollup(sctx, n, bg); 1590 break; 1591 case INPUT_CSI_SD: 1592 n = input_get(ictx, 0, 1, 1); 1593 if (n != -1) 1594 screen_write_scrolldown(sctx, n, bg); 1595 break; 1596 case INPUT_CSI_TBC: 1597 switch (input_get(ictx, 0, 0, 0)) { 1598 case -1: 1599 break; 1600 case 0: 1601 if (s->cx < screen_size_x(s)) 1602 bit_clear(s->tabs, s->cx); 1603 break; 1604 case 3: 1605 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1606 break; 1607 default: 1608 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1609 break; 1610 } 1611 break; 1612 case INPUT_CSI_VPA: 1613 n = input_get(ictx, 0, 1, 1); 1614 if (n != -1) 1615 screen_write_cursormove(sctx, -1, n - 1, 1); 1616 break; 1617 case INPUT_CSI_DECSCUSR: 1618 n = input_get(ictx, 0, 0, 0); 1619 if (n != -1) 1620 screen_set_cursor_style(s, n); 1621 break; 1622 case INPUT_CSI_XDA: 1623 n = input_get(ictx, 0, 0, 0); 1624 if (n == 0) 1625 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1626 break; 1627 1628 } 1629 1630 ictx->last = -1; 1631 return (0); 1632} 1633 1634/* Handle CSI RM. */ 1635static void 1636input_csi_dispatch_rm(struct input_ctx *ictx) 1637{ 1638 struct screen_write_ctx *sctx = &ictx->ctx; 1639 u_int i; 1640 1641 for (i = 0; i < ictx->param_list_len; i++) { 1642 switch (input_get(ictx, i, 0, -1)) { 1643 case -1: 1644 break; 1645 case 4: /* IRM */ 1646 screen_write_mode_clear(sctx, MODE_INSERT); 1647 break; 1648 case 34: 1649 screen_write_mode_set(sctx, MODE_BLINKING); 1650 break; 1651 default: 1652 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1653 break; 1654 } 1655 } 1656} 1657 1658/* Handle CSI private RM. */ 1659static void 1660input_csi_dispatch_rm_private(struct input_ctx *ictx) 1661{ 1662 struct screen_write_ctx *sctx = &ictx->ctx; 1663 struct grid_cell *gc = &ictx->cell.cell; 1664 u_int i; 1665 1666 for (i = 0; i < ictx->param_list_len; i++) { 1667 switch (input_get(ictx, i, 0, -1)) { 1668 case -1: 1669 break; 1670 case 1: /* DECCKM */ 1671 screen_write_mode_clear(sctx, MODE_KCURSOR); 1672 break; 1673 case 3: /* DECCOLM */ 1674 screen_write_cursormove(sctx, 0, 0, 1); 1675 screen_write_clearscreen(sctx, gc->bg); 1676 break; 1677 case 6: /* DECOM */ 1678 screen_write_mode_clear(sctx, MODE_ORIGIN); 1679 screen_write_cursormove(sctx, 0, 0, 1); 1680 break; 1681 case 7: /* DECAWM */ 1682 screen_write_mode_clear(sctx, MODE_WRAP); 1683 break; 1684 case 12: 1685 screen_write_mode_clear(sctx, MODE_BLINKING); 1686 break; 1687 case 25: /* TCEM */ 1688 screen_write_mode_clear(sctx, MODE_CURSOR); 1689 break; 1690 case 1000: 1691 case 1001: 1692 case 1002: 1693 case 1003: 1694 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1695 break; 1696 case 1004: 1697 screen_write_mode_clear(sctx, MODE_FOCUSON); 1698 break; 1699 case 1005: 1700 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1701 break; 1702 case 1006: 1703 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1704 break; 1705 case 47: 1706 case 1047: 1707 screen_write_alternateoff(sctx, gc, 0); 1708 break; 1709 case 1049: 1710 screen_write_alternateoff(sctx, gc, 1); 1711 break; 1712 case 2004: 1713 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1714 break; 1715 default: 1716 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1717 break; 1718 } 1719 } 1720} 1721 1722/* Handle CSI SM. */ 1723static void 1724input_csi_dispatch_sm(struct input_ctx *ictx) 1725{ 1726 struct screen_write_ctx *sctx = &ictx->ctx; 1727 u_int i; 1728 1729 for (i = 0; i < ictx->param_list_len; i++) { 1730 switch (input_get(ictx, i, 0, -1)) { 1731 case -1: 1732 break; 1733 case 4: /* IRM */ 1734 screen_write_mode_set(sctx, MODE_INSERT); 1735 break; 1736 case 34: 1737 screen_write_mode_clear(sctx, MODE_BLINKING); 1738 break; 1739 default: 1740 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1741 break; 1742 } 1743 } 1744} 1745 1746/* Handle CSI private SM. */ 1747static void 1748input_csi_dispatch_sm_private(struct input_ctx *ictx) 1749{ 1750 struct screen_write_ctx *sctx = &ictx->ctx; 1751 struct window_pane *wp = ictx->wp; 1752 struct grid_cell *gc = &ictx->cell.cell; 1753 u_int i; 1754 1755 for (i = 0; i < ictx->param_list_len; i++) { 1756 switch (input_get(ictx, i, 0, -1)) { 1757 case -1: 1758 break; 1759 case 1: /* DECCKM */ 1760 screen_write_mode_set(sctx, MODE_KCURSOR); 1761 break; 1762 case 3: /* DECCOLM */ 1763 screen_write_cursormove(sctx, 0, 0, 1); 1764 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1765 break; 1766 case 6: /* DECOM */ 1767 screen_write_mode_set(sctx, MODE_ORIGIN); 1768 screen_write_cursormove(sctx, 0, 0, 1); 1769 break; 1770 case 7: /* DECAWM */ 1771 screen_write_mode_set(sctx, MODE_WRAP); 1772 break; 1773 case 12: 1774 screen_write_mode_set(sctx, MODE_BLINKING); 1775 break; 1776 case 25: /* TCEM */ 1777 screen_write_mode_set(sctx, MODE_CURSOR); 1778 break; 1779 case 1000: 1780 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1781 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1782 break; 1783 case 1002: 1784 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1785 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1786 break; 1787 case 1003: 1788 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1789 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1790 break; 1791 case 1004: 1792 if (sctx->s->mode & MODE_FOCUSON) 1793 break; 1794 screen_write_mode_set(sctx, MODE_FOCUSON); 1795 if (wp != NULL) 1796 wp->flags |= PANE_FOCUSPUSH; /* force update */ 1797 break; 1798 case 1005: 1799 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1800 break; 1801 case 1006: 1802 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1803 break; 1804 case 47: 1805 case 1047: 1806 screen_write_alternateon(sctx, gc, 0); 1807 break; 1808 case 1049: 1809 screen_write_alternateon(sctx, gc, 1); 1810 break; 1811 case 2004: 1812 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1813 break; 1814 default: 1815 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1816 break; 1817 } 1818 } 1819} 1820 1821/* Handle CSI window operations. */ 1822static void 1823input_csi_dispatch_winops(struct input_ctx *ictx) 1824{ 1825 struct screen_write_ctx *sctx = &ictx->ctx; 1826 struct screen *s = sctx->s; 1827 struct window_pane *wp = ictx->wp; 1828 u_int x = screen_size_x(s), y = screen_size_y(s); 1829 int n, m; 1830 1831 m = 0; 1832 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1833 switch (n) { 1834 case 1: 1835 case 2: 1836 case 5: 1837 case 6: 1838 case 7: 1839 case 11: 1840 case 13: 1841 case 14: 1842 case 19: 1843 case 20: 1844 case 21: 1845 case 24: 1846 break; 1847 case 3: 1848 case 4: 1849 case 8: 1850 m++; 1851 if (input_get(ictx, m, 0, -1) == -1) 1852 return; 1853 /* FALLTHROUGH */ 1854 case 9: 1855 case 10: 1856 m++; 1857 if (input_get(ictx, m, 0, -1) == -1) 1858 return; 1859 break; 1860 case 22: 1861 m++; 1862 switch (input_get(ictx, m, 0, -1)) { 1863 case -1: 1864 return; 1865 case 0: 1866 case 2: 1867 screen_push_title(sctx->s); 1868 break; 1869 } 1870 break; 1871 case 23: 1872 m++; 1873 switch (input_get(ictx, m, 0, -1)) { 1874 case -1: 1875 return; 1876 case 0: 1877 case 2: 1878 screen_pop_title(sctx->s); 1879 if (wp == NULL) 1880 break; 1881 notify_pane("pane-title-changed", wp); 1882 server_redraw_window_borders(wp->window); 1883 server_status_window(wp->window); 1884 break; 1885 } 1886 break; 1887 case 18: 1888 input_reply(ictx, "\033[8;%u;%ut", x, y); 1889 break; 1890 default: 1891 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1892 break; 1893 } 1894 m++; 1895 } 1896} 1897 1898/* Helper for 256 colour SGR. */ 1899static int 1900input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1901{ 1902 struct grid_cell *gc = &ictx->cell.cell; 1903 1904 if (c == -1 || c > 255) { 1905 if (fgbg == 38) 1906 gc->fg = 8; 1907 else if (fgbg == 48) 1908 gc->bg = 8; 1909 } else { 1910 if (fgbg == 38) 1911 gc->fg = c | COLOUR_FLAG_256; 1912 else if (fgbg == 48) 1913 gc->bg = c | COLOUR_FLAG_256; 1914 else if (fgbg == 58) 1915 gc->us = c | COLOUR_FLAG_256; 1916 } 1917 return (1); 1918} 1919 1920/* Handle CSI SGR for 256 colours. */ 1921static void 1922input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1923{ 1924 int c; 1925 1926 c = input_get(ictx, (*i) + 1, 0, -1); 1927 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1928 (*i)++; 1929} 1930 1931/* Helper for RGB colour SGR. */ 1932static int 1933input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1934 int b) 1935{ 1936 struct grid_cell *gc = &ictx->cell.cell; 1937 1938 if (r == -1 || r > 255) 1939 return (0); 1940 if (g == -1 || g > 255) 1941 return (0); 1942 if (b == -1 || b > 255) 1943 return (0); 1944 1945 if (fgbg == 38) 1946 gc->fg = colour_join_rgb(r, g, b); 1947 else if (fgbg == 48) 1948 gc->bg = colour_join_rgb(r, g, b); 1949 else if (fgbg == 58) 1950 gc->us = colour_join_rgb(r, g, b); 1951 return (1); 1952} 1953 1954/* Handle CSI SGR for RGB colours. */ 1955static void 1956input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1957{ 1958 int r, g, b; 1959 1960 r = input_get(ictx, (*i) + 1, 0, -1); 1961 g = input_get(ictx, (*i) + 2, 0, -1); 1962 b = input_get(ictx, (*i) + 3, 0, -1); 1963 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1964 (*i) += 3; 1965} 1966 1967/* Handle CSI SGR with a ISO parameter. */ 1968static void 1969input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1970{ 1971 struct grid_cell *gc = &ictx->cell.cell; 1972 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1973 int p[8]; 1974 u_int n; 1975 const char *errstr; 1976 1977 for (n = 0; n < nitems(p); n++) 1978 p[n] = -1; 1979 n = 0; 1980 1981 ptr = copy = xstrdup(s); 1982 while ((out = strsep(&ptr, ":")) != NULL) { 1983 if (*out != '\0') { 1984 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1985 if (errstr != NULL || n == nitems(p)) { 1986 free(copy); 1987 return; 1988 } 1989 } else { 1990 n++; 1991 if (n == nitems(p)) { 1992 free(copy); 1993 return; 1994 } 1995 } 1996 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 1997 } 1998 free(copy); 1999 2000 if (n == 0) 2001 return; 2002 if (p[0] == 4) { 2003 if (n != 2) 2004 return; 2005 switch (p[1]) { 2006 case 0: 2007 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2008 break; 2009 case 1: 2010 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2011 gc->attr |= GRID_ATTR_UNDERSCORE; 2012 break; 2013 case 2: 2014 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2015 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2016 break; 2017 case 3: 2018 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2019 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2020 break; 2021 case 4: 2022 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2023 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2024 break; 2025 case 5: 2026 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2027 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2028 break; 2029 } 2030 return; 2031 } 2032 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2033 return; 2034 switch (p[1]) { 2035 case 2: 2036 if (n < 3) 2037 break; 2038 if (n == 5) 2039 i = 2; 2040 else 2041 i = 3; 2042 if (n < i + 3) 2043 break; 2044 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2045 p[i + 2]); 2046 break; 2047 case 5: 2048 if (n < 3) 2049 break; 2050 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2051 break; 2052 } 2053} 2054 2055/* Handle CSI SGR. */ 2056static void 2057input_csi_dispatch_sgr(struct input_ctx *ictx) 2058{ 2059 struct grid_cell *gc = &ictx->cell.cell; 2060 u_int i; 2061 int n; 2062 2063 if (ictx->param_list_len == 0) { 2064 memcpy(gc, &grid_default_cell, sizeof *gc); 2065 return; 2066 } 2067 2068 for (i = 0; i < ictx->param_list_len; i++) { 2069 if (ictx->param_list[i].type == INPUT_STRING) { 2070 input_csi_dispatch_sgr_colon(ictx, i); 2071 continue; 2072 } 2073 n = input_get(ictx, i, 0, 0); 2074 if (n == -1) 2075 continue; 2076 2077 if (n == 38 || n == 48 || n == 58) { 2078 i++; 2079 switch (input_get(ictx, i, 0, -1)) { 2080 case 2: 2081 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2082 break; 2083 case 5: 2084 input_csi_dispatch_sgr_256(ictx, n, &i); 2085 break; 2086 } 2087 continue; 2088 } 2089 2090 switch (n) { 2091 case 0: 2092 memcpy(gc, &grid_default_cell, sizeof *gc); 2093 break; 2094 case 1: 2095 gc->attr |= GRID_ATTR_BRIGHT; 2096 break; 2097 case 2: 2098 gc->attr |= GRID_ATTR_DIM; 2099 break; 2100 case 3: 2101 gc->attr |= GRID_ATTR_ITALICS; 2102 break; 2103 case 4: 2104 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2105 gc->attr |= GRID_ATTR_UNDERSCORE; 2106 break; 2107 case 5: 2108 case 6: 2109 gc->attr |= GRID_ATTR_BLINK; 2110 break; 2111 case 7: 2112 gc->attr |= GRID_ATTR_REVERSE; 2113 break; 2114 case 8: 2115 gc->attr |= GRID_ATTR_HIDDEN; 2116 break; 2117 case 9: 2118 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2119 break; 2120 case 21: 2121 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2122 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2123 break; 2124 case 22: 2125 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2126 break; 2127 case 23: 2128 gc->attr &= ~GRID_ATTR_ITALICS; 2129 break; 2130 case 24: 2131 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2132 break; 2133 case 25: 2134 gc->attr &= ~GRID_ATTR_BLINK; 2135 break; 2136 case 27: 2137 gc->attr &= ~GRID_ATTR_REVERSE; 2138 break; 2139 case 28: 2140 gc->attr &= ~GRID_ATTR_HIDDEN; 2141 break; 2142 case 29: 2143 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2144 break; 2145 case 30: 2146 case 31: 2147 case 32: 2148 case 33: 2149 case 34: 2150 case 35: 2151 case 36: 2152 case 37: 2153 gc->fg = n - 30; 2154 break; 2155 case 39: 2156 gc->fg = 8; 2157 break; 2158 case 40: 2159 case 41: 2160 case 42: 2161 case 43: 2162 case 44: 2163 case 45: 2164 case 46: 2165 case 47: 2166 gc->bg = n - 40; 2167 break; 2168 case 49: 2169 gc->bg = 8; 2170 break; 2171 case 53: 2172 gc->attr |= GRID_ATTR_OVERLINE; 2173 break; 2174 case 55: 2175 gc->attr &= ~GRID_ATTR_OVERLINE; 2176 break; 2177 case 59: 2178 gc->us = 0; 2179 break; 2180 case 90: 2181 case 91: 2182 case 92: 2183 case 93: 2184 case 94: 2185 case 95: 2186 case 96: 2187 case 97: 2188 gc->fg = n; 2189 break; 2190 case 100: 2191 case 101: 2192 case 102: 2193 case 103: 2194 case 104: 2195 case 105: 2196 case 106: 2197 case 107: 2198 gc->bg = n - 10; 2199 break; 2200 } 2201 } 2202} 2203 2204/* End of input with BEL. */ 2205static int 2206input_end_bel(struct input_ctx *ictx) 2207{ 2208 log_debug("%s", __func__); 2209 2210 ictx->input_end = INPUT_END_BEL; 2211 2212 return (0); 2213} 2214 2215/* DCS string started. */ 2216static void 2217input_enter_dcs(struct input_ctx *ictx) 2218{ 2219 log_debug("%s", __func__); 2220 2221 input_clear(ictx); 2222 input_start_timer(ictx); 2223 ictx->last = -1; 2224} 2225 2226/* DCS terminator (ST) received. */ 2227static int 2228input_dcs_dispatch(struct input_ctx *ictx) 2229{ 2230 struct screen_write_ctx *sctx = &ictx->ctx; 2231 u_char *buf = ictx->input_buf; 2232 size_t len = ictx->input_len; 2233 const char prefix[] = "tmux;"; 2234 const u_int prefixlen = (sizeof prefix) - 1; 2235 2236 if (ictx->flags & INPUT_DISCARD) 2237 return (0); 2238 2239 log_debug("%s: \"%s\"", __func__, buf); 2240 2241 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2242 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2243 2244 return (0); 2245} 2246 2247/* OSC string started. */ 2248static void 2249input_enter_osc(struct input_ctx *ictx) 2250{ 2251 log_debug("%s", __func__); 2252 2253 input_clear(ictx); 2254 input_start_timer(ictx); 2255 ictx->last = -1; 2256} 2257 2258/* OSC terminator (ST) received. */ 2259static void 2260input_exit_osc(struct input_ctx *ictx) 2261{ 2262 struct screen_write_ctx *sctx = &ictx->ctx; 2263 struct window_pane *wp = ictx->wp; 2264 u_char *p = ictx->input_buf; 2265 u_int option; 2266 2267 if (ictx->flags & INPUT_DISCARD) 2268 return; 2269 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2270 return; 2271 2272 log_debug("%s: \"%s\" (end %s)", __func__, p, 2273 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2274 2275 option = 0; 2276 while (*p >= '0' && *p <= '9') 2277 option = option * 10 + *p++ - '0'; 2278 if (*p == ';') 2279 p++; 2280 2281 switch (option) { 2282 case 0: 2283 case 2: 2284 if (screen_set_title(sctx->s, p) && wp != NULL) { 2285 notify_pane("pane-title-changed", wp); 2286 server_redraw_window_borders(wp->window); 2287 server_status_window(wp->window); 2288 } 2289 break; 2290 case 4: 2291 input_osc_4(ictx, p); 2292 break; 2293 case 7: 2294 if (utf8_isvalid(p)) { 2295 screen_set_path(sctx->s, p); 2296 if (wp != NULL) { 2297 server_redraw_window_borders(wp->window); 2298 server_status_window(wp->window); 2299 } 2300 } 2301 break; 2302 case 10: 2303 input_osc_10(ictx, p); 2304 break; 2305 case 11: 2306 input_osc_11(ictx, p); 2307 break; 2308 case 12: 2309 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */ 2310 screen_set_cursor_colour(sctx->s, p); 2311 break; 2312 case 52: 2313 input_osc_52(ictx, p); 2314 break; 2315 case 104: 2316 input_osc_104(ictx, p); 2317 break; 2318 case 110: 2319 input_osc_110(ictx, p); 2320 break; 2321 case 111: 2322 input_osc_111(ictx, p); 2323 break; 2324 case 112: 2325 if (*p == '\0') /* no arguments allowed */ 2326 screen_set_cursor_colour(sctx->s, ""); 2327 break; 2328 default: 2329 log_debug("%s: unknown '%u'", __func__, option); 2330 break; 2331 } 2332} 2333 2334/* APC string started. */ 2335static void 2336input_enter_apc(struct input_ctx *ictx) 2337{ 2338 log_debug("%s", __func__); 2339 2340 input_clear(ictx); 2341 input_start_timer(ictx); 2342 ictx->last = -1; 2343} 2344 2345/* APC terminator (ST) received. */ 2346static void 2347input_exit_apc(struct input_ctx *ictx) 2348{ 2349 struct screen_write_ctx *sctx = &ictx->ctx; 2350 struct window_pane *wp = ictx->wp; 2351 2352 if (ictx->flags & INPUT_DISCARD) 2353 return; 2354 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2355 2356 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2357 notify_pane("pane-title-changed", wp); 2358 server_redraw_window_borders(wp->window); 2359 server_status_window(wp->window); 2360 } 2361} 2362 2363/* Rename string started. */ 2364static void 2365input_enter_rename(struct input_ctx *ictx) 2366{ 2367 log_debug("%s", __func__); 2368 2369 input_clear(ictx); 2370 input_start_timer(ictx); 2371 ictx->last = -1; 2372} 2373 2374/* Rename terminator (ST) received. */ 2375static void 2376input_exit_rename(struct input_ctx *ictx) 2377{ 2378 struct window_pane *wp = ictx->wp; 2379 struct options_entry *o; 2380 2381 if (wp == NULL) 2382 return; 2383 if (ictx->flags & INPUT_DISCARD) 2384 return; 2385 if (!options_get_number(ictx->wp->options, "allow-rename")) 2386 return; 2387 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2388 2389 if (!utf8_isvalid(ictx->input_buf)) 2390 return; 2391 2392 if (ictx->input_len == 0) { 2393 o = options_get_only(wp->window->options, "automatic-rename"); 2394 if (o != NULL) 2395 options_remove_or_default(o, -1, NULL); 2396 return; 2397 } 2398 window_set_name(wp->window, ictx->input_buf); 2399 options_set_number(wp->window->options, "automatic-rename", 0); 2400 server_redraw_window_borders(wp->window); 2401 server_status_window(wp->window); 2402} 2403 2404/* Open UTF-8 character. */ 2405static int 2406input_top_bit_set(struct input_ctx *ictx) 2407{ 2408 struct screen_write_ctx *sctx = &ictx->ctx; 2409 struct utf8_data *ud = &ictx->utf8data; 2410 2411 ictx->last = -1; 2412 2413 if (!ictx->utf8started) { 2414 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2415 return (0); 2416 ictx->utf8started = 1; 2417 return (0); 2418 } 2419 2420 switch (utf8_append(ud, ictx->ch)) { 2421 case UTF8_MORE: 2422 return (0); 2423 case UTF8_ERROR: 2424 ictx->utf8started = 0; 2425 return (0); 2426 case UTF8_DONE: 2427 break; 2428 } 2429 ictx->utf8started = 0; 2430 2431 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2432 (int)ud->size, ud->data, ud->width); 2433 2434 utf8_copy(&ictx->cell.cell.data, ud); 2435 screen_write_collect_add(sctx, &ictx->cell.cell); 2436 2437 return (0); 2438} 2439 2440/* Parse colour from OSC. */ 2441static int 2442input_osc_parse_colour(const char *p) 2443{ 2444 double c, m, y, k = 0; 2445 u_int r, g, b; 2446 size_t len = strlen(p); 2447 int colour = -1; 2448 char *copy; 2449 2450 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) || 2451 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) || 2452 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3) 2453 colour = colour_join_rgb(r, g, b); 2454 else if ((len == 18 && 2455 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) || 2456 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3)) 2457 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8); 2458 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 || 2459 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) && 2460 c >= 0 && c <= 1 && m >= 0 && m <= 1 && 2461 y >= 0 && y <= 1 && k >= 0 && k <= 1) { 2462 colour = colour_join_rgb( 2463 (1 - c) * (1 - k) * 255, 2464 (1 - m) * (1 - k) * 255, 2465 (1 - y) * (1 - k) * 255); 2466 } else { 2467 while (len != 0 && *p == ' ') { 2468 p++; 2469 len--; 2470 } 2471 while (len != 0 && p[len - 1] == ' ') 2472 len--; 2473 copy = xstrndup(p, len); 2474 colour = colour_byname(copy); 2475 free(copy); 2476 } 2477 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour)); 2478 return (colour); 2479} 2480 2481/* Reply to a colour request. */ 2482static void 2483input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2484{ 2485 u_char r, g, b; 2486 const char *end; 2487 2488 if (c == 8 || (~c & COLOUR_FLAG_RGB)) 2489 return; 2490 colour_split_rgb(c, &r, &g, &b); 2491 2492 if (ictx->input_end == INPUT_END_BEL) 2493 end = "\007"; 2494 else 2495 end = "\033\\"; 2496 input_reply(ictx, "\033]%u;rgb:%02hhx/%02hhx/%02hhx%s", n, r, g, b, end); 2497} 2498 2499/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2500static void 2501input_osc_4(struct input_ctx *ictx, const char *p) 2502{ 2503 char *copy, *s, *next = NULL; 2504 long idx; 2505 int c, bad = 0, redraw = 0; 2506 2507 copy = s = xstrdup(p); 2508 while (s != NULL && *s != '\0') { 2509 idx = strtol(s, &next, 10); 2510 if (*next++ != ';') { 2511 bad = 1; 2512 break; 2513 } 2514 if (idx < 0 || idx >= 256) { 2515 bad = 1; 2516 break; 2517 } 2518 2519 s = strsep(&next, ";"); 2520 if ((c = input_osc_parse_colour(s)) == -1) { 2521 s = next; 2522 continue; 2523 } 2524 if (colour_palette_set(ictx->palette, idx, c)) 2525 redraw = 1; 2526 s = next; 2527 } 2528 if (bad) 2529 log_debug("bad OSC 4: %s", p); 2530 if (redraw) 2531 screen_write_fullredraw(&ictx->ctx); 2532 free(copy); 2533} 2534 2535/* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2536static void 2537input_osc_10(struct input_ctx *ictx, const char *p) 2538{ 2539 struct window_pane *wp = ictx->wp; 2540 struct grid_cell defaults; 2541 int c; 2542 2543 if (strcmp(p, "?") == 0) { 2544 if (wp != NULL) { 2545 tty_default_colours(&defaults, wp); 2546 input_osc_colour_reply(ictx, 10, defaults.fg); 2547 } 2548 return; 2549 } 2550 2551 if ((c = input_osc_parse_colour(p)) == -1) { 2552 log_debug("bad OSC 10: %s", p); 2553 return; 2554 } 2555 ictx->palette->fg = c; 2556 if (wp != NULL) 2557 wp->flags |= PANE_STYLECHANGED; 2558 screen_write_fullredraw(&ictx->ctx); 2559} 2560 2561/* Handle the OSC 110 sequence for resetting background colour. */ 2562static void 2563input_osc_110(struct input_ctx *ictx, const char *p) 2564{ 2565 struct window_pane *wp = ictx->wp; 2566 2567 if (*p != '\0') 2568 return; 2569 ictx->palette->fg = 8; 2570 if (wp != NULL) 2571 wp->flags |= PANE_STYLECHANGED; 2572 screen_write_fullredraw(&ictx->ctx); 2573} 2574 2575/* Handle the OSC 11 sequence for setting and querying background colour. */ 2576static void 2577input_osc_11(struct input_ctx *ictx, const char *p) 2578{ 2579 struct window_pane *wp = ictx->wp; 2580 struct grid_cell defaults; 2581 int c; 2582 2583 if (strcmp(p, "?") == 0) { 2584 if (wp != NULL) { 2585 tty_default_colours(&defaults, wp); 2586 input_osc_colour_reply(ictx, 11, defaults.bg); 2587 } 2588 return; 2589 } 2590 2591 if ((c = input_osc_parse_colour(p)) == -1) { 2592 log_debug("bad OSC 11: %s", p); 2593 return; 2594 } 2595 ictx->palette->bg = c; 2596 if (wp != NULL) 2597 wp->flags |= PANE_STYLECHANGED; 2598 screen_write_fullredraw(&ictx->ctx); 2599} 2600 2601/* Handle the OSC 111 sequence for resetting background colour. */ 2602static void 2603input_osc_111(struct input_ctx *ictx, const char *p) 2604{ 2605 struct window_pane *wp = ictx->wp; 2606 2607 if (*p != '\0') 2608 return; 2609 ictx->palette->bg = 8; 2610 if (wp != NULL) 2611 wp->flags |= PANE_STYLECHANGED; 2612 screen_write_fullredraw(&ictx->ctx); 2613} 2614 2615/* Handle the OSC 52 sequence for setting the clipboard. */ 2616static void 2617input_osc_52(struct input_ctx *ictx, const char *p) 2618{ 2619 struct window_pane *wp = ictx->wp; 2620 char *end; 2621 const char *buf; 2622 size_t len; 2623 u_char *out; 2624 int outlen, state; 2625 struct screen_write_ctx ctx; 2626 struct paste_buffer *pb; 2627 2628 if (wp == NULL) 2629 return; 2630 state = options_get_number(global_options, "set-clipboard"); 2631 if (state != 2) 2632 return; 2633 2634 if ((end = strchr(p, ';')) == NULL) 2635 return; 2636 end++; 2637 if (*end == '\0') 2638 return; 2639 log_debug("%s: %s", __func__, end); 2640 2641 if (strcmp(end, "?") == 0) { 2642 if ((pb = paste_get_top(NULL)) != NULL) { 2643 buf = paste_buffer_data(pb, &len); 2644 outlen = 4 * ((len + 2) / 3) + 1; 2645 out = xmalloc(outlen); 2646 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2647 free(out); 2648 return; 2649 } 2650 } else { 2651 outlen = 0; 2652 out = NULL; 2653 } 2654 bufferevent_write(ictx->event, "\033]52;;", 6); 2655 if (outlen != 0) 2656 bufferevent_write(ictx->event, out, outlen); 2657 if (ictx->input_end == INPUT_END_BEL) 2658 bufferevent_write(ictx->event, "\007", 1); 2659 else 2660 bufferevent_write(ictx->event, "\033\\", 2); 2661 free(out); 2662 return; 2663 } 2664 2665 len = (strlen(end) / 4) * 3; 2666 if (len == 0) 2667 return; 2668 2669 out = xmalloc(len); 2670 if ((outlen = b64_pton(end, out, len)) == -1) { 2671 free(out); 2672 return; 2673 } 2674 2675 screen_write_start_pane(&ctx, wp, NULL); 2676 screen_write_setselection(&ctx, out, outlen); 2677 screen_write_stop(&ctx); 2678 notify_pane("pane-set-clipboard", wp); 2679 2680 paste_add(NULL, out, outlen); 2681} 2682 2683/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2684static void 2685input_osc_104(struct input_ctx *ictx, const char *p) 2686{ 2687 char *copy, *s; 2688 long idx; 2689 int bad = 0, redraw = 0; 2690 2691 if (*p == '\0') { 2692 colour_palette_clear(ictx->palette); 2693 screen_write_fullredraw(&ictx->ctx); 2694 return; 2695 } 2696 2697 copy = s = xstrdup(p); 2698 while (*s != '\0') { 2699 idx = strtol(s, &s, 10); 2700 if (*s != '\0' && *s != ';') { 2701 bad = 1; 2702 break; 2703 } 2704 if (idx < 0 || idx >= 256) { 2705 bad = 1; 2706 break; 2707 } 2708 if (colour_palette_set(ictx->palette, idx, -1)) 2709 redraw = 1; 2710 if (*s == ';') 2711 s++; 2712 } 2713 if (bad) 2714 log_debug("bad OSC 104: %s", p); 2715 if (redraw) 2716 screen_write_fullredraw(&ictx->ctx); 2717 free(copy); 2718} 2719