input.c revision 1.196
1/* $OpenBSD: input.c,v 1.196 2021/11/11 09:31:16 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_12(struct input_ctx *, const char *); 141static void input_osc_52(struct input_ctx *, const char *); 142static void input_osc_104(struct input_ctx *, const char *); 143static void input_osc_110(struct input_ctx *, const char *); 144static void input_osc_111(struct input_ctx *, const char *); 145static void input_osc_112(struct input_ctx *, const char *); 146 147/* Transition entry/exit handlers. */ 148static void input_clear(struct input_ctx *); 149static void input_ground(struct input_ctx *); 150static void input_enter_dcs(struct input_ctx *); 151static void input_enter_osc(struct input_ctx *); 152static void input_exit_osc(struct input_ctx *); 153static void input_enter_apc(struct input_ctx *); 154static void input_exit_apc(struct input_ctx *); 155static void input_enter_rename(struct input_ctx *); 156static void input_exit_rename(struct input_ctx *); 157 158/* Input state handlers. */ 159static int input_print(struct input_ctx *); 160static int input_intermediate(struct input_ctx *); 161static int input_parameter(struct input_ctx *); 162static int input_input(struct input_ctx *); 163static int input_c0_dispatch(struct input_ctx *); 164static int input_esc_dispatch(struct input_ctx *); 165static int input_csi_dispatch(struct input_ctx *); 166static void input_csi_dispatch_rm(struct input_ctx *); 167static void input_csi_dispatch_rm_private(struct input_ctx *); 168static void input_csi_dispatch_sm(struct input_ctx *); 169static void input_csi_dispatch_sm_private(struct input_ctx *); 170static void input_csi_dispatch_winops(struct input_ctx *); 171static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 172static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 173static void input_csi_dispatch_sgr(struct input_ctx *); 174static int input_dcs_dispatch(struct input_ctx *); 175static int input_top_bit_set(struct input_ctx *); 176static int input_end_bel(struct input_ctx *); 177 178/* Command table comparison function. */ 179static int input_table_compare(const void *, const void *); 180 181/* Command table entry. */ 182struct input_table_entry { 183 int ch; 184 const char *interm; 185 int type; 186}; 187 188/* Escape commands. */ 189enum input_esc_type { 190 INPUT_ESC_DECALN, 191 INPUT_ESC_DECKPAM, 192 INPUT_ESC_DECKPNM, 193 INPUT_ESC_DECRC, 194 INPUT_ESC_DECSC, 195 INPUT_ESC_HTS, 196 INPUT_ESC_IND, 197 INPUT_ESC_NEL, 198 INPUT_ESC_RI, 199 INPUT_ESC_RIS, 200 INPUT_ESC_SCSG0_OFF, 201 INPUT_ESC_SCSG0_ON, 202 INPUT_ESC_SCSG1_OFF, 203 INPUT_ESC_SCSG1_ON, 204 INPUT_ESC_ST, 205}; 206 207/* Escape command table. */ 208static const struct input_table_entry input_esc_table[] = { 209 { '0', "(", INPUT_ESC_SCSG0_ON }, 210 { '0', ")", INPUT_ESC_SCSG1_ON }, 211 { '7', "", INPUT_ESC_DECSC }, 212 { '8', "", INPUT_ESC_DECRC }, 213 { '8', "#", INPUT_ESC_DECALN }, 214 { '=', "", INPUT_ESC_DECKPAM }, 215 { '>', "", INPUT_ESC_DECKPNM }, 216 { 'B', "(", INPUT_ESC_SCSG0_OFF }, 217 { 'B', ")", INPUT_ESC_SCSG1_OFF }, 218 { 'D', "", INPUT_ESC_IND }, 219 { 'E', "", INPUT_ESC_NEL }, 220 { 'H', "", INPUT_ESC_HTS }, 221 { 'M', "", INPUT_ESC_RI }, 222 { '\\', "", INPUT_ESC_ST }, 223 { 'c', "", INPUT_ESC_RIS }, 224}; 225 226/* Control (CSI) commands. */ 227enum input_csi_type { 228 INPUT_CSI_CBT, 229 INPUT_CSI_CNL, 230 INPUT_CSI_CPL, 231 INPUT_CSI_CUB, 232 INPUT_CSI_CUD, 233 INPUT_CSI_CUF, 234 INPUT_CSI_CUP, 235 INPUT_CSI_CUU, 236 INPUT_CSI_DA, 237 INPUT_CSI_DA_TWO, 238 INPUT_CSI_DCH, 239 INPUT_CSI_DECSCUSR, 240 INPUT_CSI_DECSTBM, 241 INPUT_CSI_DL, 242 INPUT_CSI_DSR, 243 INPUT_CSI_ECH, 244 INPUT_CSI_ED, 245 INPUT_CSI_EL, 246 INPUT_CSI_HPA, 247 INPUT_CSI_ICH, 248 INPUT_CSI_IL, 249 INPUT_CSI_MODOFF, 250 INPUT_CSI_MODSET, 251 INPUT_CSI_RCP, 252 INPUT_CSI_REP, 253 INPUT_CSI_RM, 254 INPUT_CSI_RM_PRIVATE, 255 INPUT_CSI_SCP, 256 INPUT_CSI_SD, 257 INPUT_CSI_SGR, 258 INPUT_CSI_SM, 259 INPUT_CSI_SM_PRIVATE, 260 INPUT_CSI_SU, 261 INPUT_CSI_TBC, 262 INPUT_CSI_VPA, 263 INPUT_CSI_WINOPS, 264 INPUT_CSI_XDA, 265}; 266 267/* Control (CSI) command table. */ 268static const struct input_table_entry input_csi_table[] = { 269 { '@', "", INPUT_CSI_ICH }, 270 { 'A', "", INPUT_CSI_CUU }, 271 { 'B', "", INPUT_CSI_CUD }, 272 { 'C', "", INPUT_CSI_CUF }, 273 { 'D', "", INPUT_CSI_CUB }, 274 { 'E', "", INPUT_CSI_CNL }, 275 { 'F', "", INPUT_CSI_CPL }, 276 { 'G', "", INPUT_CSI_HPA }, 277 { 'H', "", INPUT_CSI_CUP }, 278 { 'J', "", INPUT_CSI_ED }, 279 { 'K', "", INPUT_CSI_EL }, 280 { 'L', "", INPUT_CSI_IL }, 281 { 'M', "", INPUT_CSI_DL }, 282 { 'P', "", INPUT_CSI_DCH }, 283 { 'S', "", INPUT_CSI_SU }, 284 { 'T', "", INPUT_CSI_SD }, 285 { 'X', "", INPUT_CSI_ECH }, 286 { 'Z', "", INPUT_CSI_CBT }, 287 { '`', "", INPUT_CSI_HPA }, 288 { 'b', "", INPUT_CSI_REP }, 289 { 'c', "", INPUT_CSI_DA }, 290 { 'c', ">", INPUT_CSI_DA_TWO }, 291 { 'd', "", INPUT_CSI_VPA }, 292 { 'f', "", INPUT_CSI_CUP }, 293 { 'g', "", INPUT_CSI_TBC }, 294 { 'h', "", INPUT_CSI_SM }, 295 { 'h', "?", INPUT_CSI_SM_PRIVATE }, 296 { 'l', "", INPUT_CSI_RM }, 297 { 'l', "?", INPUT_CSI_RM_PRIVATE }, 298 { 'm', "", INPUT_CSI_SGR }, 299 { 'm', ">", INPUT_CSI_MODSET }, 300 { 'n', "", INPUT_CSI_DSR }, 301 { 'n', ">", INPUT_CSI_MODOFF }, 302 { 'q', " ", INPUT_CSI_DECSCUSR }, 303 { 'q', ">", INPUT_CSI_XDA }, 304 { 'r', "", INPUT_CSI_DECSTBM }, 305 { 's', "", INPUT_CSI_SCP }, 306 { 't', "", INPUT_CSI_WINOPS }, 307 { 'u', "", INPUT_CSI_RCP }, 308}; 309 310/* Input transition. */ 311struct input_transition { 312 int first; 313 int last; 314 315 int (*handler)(struct input_ctx *); 316 const struct input_state *state; 317}; 318 319/* Input state. */ 320struct input_state { 321 const char *name; 322 void (*enter)(struct input_ctx *); 323 void (*exit)(struct input_ctx *); 324 const struct input_transition *transitions; 325}; 326 327/* State transitions available from all states. */ 328#define INPUT_STATE_ANYWHERE \ 329 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \ 330 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \ 331 { 0x1b, 0x1b, NULL, &input_state_esc_enter } 332 333/* Forward declarations of state tables. */ 334static const struct input_transition input_state_ground_table[]; 335static const struct input_transition input_state_esc_enter_table[]; 336static const struct input_transition input_state_esc_intermediate_table[]; 337static const struct input_transition input_state_csi_enter_table[]; 338static const struct input_transition input_state_csi_parameter_table[]; 339static const struct input_transition input_state_csi_intermediate_table[]; 340static const struct input_transition input_state_csi_ignore_table[]; 341static const struct input_transition input_state_dcs_enter_table[]; 342static const struct input_transition input_state_dcs_parameter_table[]; 343static const struct input_transition input_state_dcs_intermediate_table[]; 344static const struct input_transition input_state_dcs_handler_table[]; 345static const struct input_transition input_state_dcs_escape_table[]; 346static const struct input_transition input_state_dcs_ignore_table[]; 347static const struct input_transition input_state_osc_string_table[]; 348static const struct input_transition input_state_apc_string_table[]; 349static const struct input_transition input_state_rename_string_table[]; 350static const struct input_transition input_state_consume_st_table[]; 351 352/* ground state definition. */ 353static const struct input_state input_state_ground = { 354 "ground", 355 input_ground, NULL, 356 input_state_ground_table 357}; 358 359/* esc_enter state definition. */ 360static const struct input_state input_state_esc_enter = { 361 "esc_enter", 362 input_clear, NULL, 363 input_state_esc_enter_table 364}; 365 366/* esc_intermediate state definition. */ 367static const struct input_state input_state_esc_intermediate = { 368 "esc_intermediate", 369 NULL, NULL, 370 input_state_esc_intermediate_table 371}; 372 373/* csi_enter state definition. */ 374static const struct input_state input_state_csi_enter = { 375 "csi_enter", 376 input_clear, NULL, 377 input_state_csi_enter_table 378}; 379 380/* csi_parameter state definition. */ 381static const struct input_state input_state_csi_parameter = { 382 "csi_parameter", 383 NULL, NULL, 384 input_state_csi_parameter_table 385}; 386 387/* csi_intermediate state definition. */ 388static const struct input_state input_state_csi_intermediate = { 389 "csi_intermediate", 390 NULL, NULL, 391 input_state_csi_intermediate_table 392}; 393 394/* csi_ignore state definition. */ 395static const struct input_state input_state_csi_ignore = { 396 "csi_ignore", 397 NULL, NULL, 398 input_state_csi_ignore_table 399}; 400 401/* dcs_enter state definition. */ 402static const struct input_state input_state_dcs_enter = { 403 "dcs_enter", 404 input_enter_dcs, NULL, 405 input_state_dcs_enter_table 406}; 407 408/* dcs_parameter state definition. */ 409static const struct input_state input_state_dcs_parameter = { 410 "dcs_parameter", 411 NULL, NULL, 412 input_state_dcs_parameter_table 413}; 414 415/* dcs_intermediate state definition. */ 416static const struct input_state input_state_dcs_intermediate = { 417 "dcs_intermediate", 418 NULL, NULL, 419 input_state_dcs_intermediate_table 420}; 421 422/* dcs_handler state definition. */ 423static const struct input_state input_state_dcs_handler = { 424 "dcs_handler", 425 NULL, NULL, 426 input_state_dcs_handler_table 427}; 428 429/* dcs_escape state definition. */ 430static const struct input_state input_state_dcs_escape = { 431 "dcs_escape", 432 NULL, NULL, 433 input_state_dcs_escape_table 434}; 435 436/* dcs_ignore state definition. */ 437static const struct input_state input_state_dcs_ignore = { 438 "dcs_ignore", 439 NULL, NULL, 440 input_state_dcs_ignore_table 441}; 442 443/* osc_string state definition. */ 444static const struct input_state input_state_osc_string = { 445 "osc_string", 446 input_enter_osc, input_exit_osc, 447 input_state_osc_string_table 448}; 449 450/* apc_string state definition. */ 451static const struct input_state input_state_apc_string = { 452 "apc_string", 453 input_enter_apc, input_exit_apc, 454 input_state_apc_string_table 455}; 456 457/* rename_string state definition. */ 458static const struct input_state input_state_rename_string = { 459 "rename_string", 460 input_enter_rename, input_exit_rename, 461 input_state_rename_string_table 462}; 463 464/* consume_st state definition. */ 465static const struct input_state input_state_consume_st = { 466 "consume_st", 467 input_enter_rename, NULL, /* rename also waits for ST */ 468 input_state_consume_st_table 469}; 470 471/* ground state table. */ 472static const struct input_transition input_state_ground_table[] = { 473 INPUT_STATE_ANYWHERE, 474 475 { 0x00, 0x17, input_c0_dispatch, NULL }, 476 { 0x19, 0x19, input_c0_dispatch, NULL }, 477 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 478 { 0x20, 0x7e, input_print, NULL }, 479 { 0x7f, 0x7f, NULL, NULL }, 480 { 0x80, 0xff, input_top_bit_set, NULL }, 481 482 { -1, -1, NULL, NULL } 483}; 484 485/* esc_enter state table. */ 486static const struct input_transition input_state_esc_enter_table[] = { 487 INPUT_STATE_ANYWHERE, 488 489 { 0x00, 0x17, input_c0_dispatch, NULL }, 490 { 0x19, 0x19, input_c0_dispatch, NULL }, 491 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 492 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate }, 493 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground }, 494 { 0x50, 0x50, NULL, &input_state_dcs_enter }, 495 { 0x51, 0x57, input_esc_dispatch, &input_state_ground }, 496 { 0x58, 0x58, NULL, &input_state_consume_st }, 497 { 0x59, 0x59, input_esc_dispatch, &input_state_ground }, 498 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground }, 499 { 0x5b, 0x5b, NULL, &input_state_csi_enter }, 500 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground }, 501 { 0x5d, 0x5d, NULL, &input_state_osc_string }, 502 { 0x5e, 0x5e, NULL, &input_state_consume_st }, 503 { 0x5f, 0x5f, NULL, &input_state_apc_string }, 504 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground }, 505 { 0x6b, 0x6b, NULL, &input_state_rename_string }, 506 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground }, 507 { 0x7f, 0xff, NULL, NULL }, 508 509 { -1, -1, NULL, NULL } 510}; 511 512/* esc_intermediate state table. */ 513static const struct input_transition input_state_esc_intermediate_table[] = { 514 INPUT_STATE_ANYWHERE, 515 516 { 0x00, 0x17, input_c0_dispatch, NULL }, 517 { 0x19, 0x19, input_c0_dispatch, NULL }, 518 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 519 { 0x20, 0x2f, input_intermediate, NULL }, 520 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground }, 521 { 0x7f, 0xff, NULL, NULL }, 522 523 { -1, -1, NULL, NULL } 524}; 525 526/* csi_enter state table. */ 527static const struct input_transition input_state_csi_enter_table[] = { 528 INPUT_STATE_ANYWHERE, 529 530 { 0x00, 0x17, input_c0_dispatch, NULL }, 531 { 0x19, 0x19, input_c0_dispatch, NULL }, 532 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 533 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 534 { 0x30, 0x39, input_parameter, &input_state_csi_parameter }, 535 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter }, 536 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter }, 537 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter }, 538 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 539 { 0x7f, 0xff, NULL, NULL }, 540 541 { -1, -1, NULL, NULL } 542}; 543 544/* csi_parameter state table. */ 545static const struct input_transition input_state_csi_parameter_table[] = { 546 INPUT_STATE_ANYWHERE, 547 548 { 0x00, 0x17, input_c0_dispatch, NULL }, 549 { 0x19, 0x19, input_c0_dispatch, NULL }, 550 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 551 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate }, 552 { 0x30, 0x39, input_parameter, NULL }, 553 { 0x3a, 0x3a, input_parameter, NULL }, 554 { 0x3b, 0x3b, input_parameter, NULL }, 555 { 0x3c, 0x3f, NULL, &input_state_csi_ignore }, 556 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 557 { 0x7f, 0xff, NULL, NULL }, 558 559 { -1, -1, NULL, NULL } 560}; 561 562/* csi_intermediate state table. */ 563static const struct input_transition input_state_csi_intermediate_table[] = { 564 INPUT_STATE_ANYWHERE, 565 566 { 0x00, 0x17, input_c0_dispatch, NULL }, 567 { 0x19, 0x19, input_c0_dispatch, NULL }, 568 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 569 { 0x20, 0x2f, input_intermediate, NULL }, 570 { 0x30, 0x3f, NULL, &input_state_csi_ignore }, 571 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground }, 572 { 0x7f, 0xff, NULL, NULL }, 573 574 { -1, -1, NULL, NULL } 575}; 576 577/* csi_ignore state table. */ 578static const struct input_transition input_state_csi_ignore_table[] = { 579 INPUT_STATE_ANYWHERE, 580 581 { 0x00, 0x17, input_c0_dispatch, NULL }, 582 { 0x19, 0x19, input_c0_dispatch, NULL }, 583 { 0x1c, 0x1f, input_c0_dispatch, NULL }, 584 { 0x20, 0x3f, NULL, NULL }, 585 { 0x40, 0x7e, NULL, &input_state_ground }, 586 { 0x7f, 0xff, NULL, NULL }, 587 588 { -1, -1, NULL, NULL } 589}; 590 591/* dcs_enter state table. */ 592static const struct input_transition input_state_dcs_enter_table[] = { 593 INPUT_STATE_ANYWHERE, 594 595 { 0x00, 0x17, NULL, NULL }, 596 { 0x19, 0x19, NULL, NULL }, 597 { 0x1c, 0x1f, NULL, NULL }, 598 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 599 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter }, 600 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 601 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter }, 602 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter }, 603 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 604 { 0x7f, 0xff, NULL, NULL }, 605 606 { -1, -1, NULL, NULL } 607}; 608 609/* dcs_parameter state table. */ 610static const struct input_transition input_state_dcs_parameter_table[] = { 611 INPUT_STATE_ANYWHERE, 612 613 { 0x00, 0x17, NULL, NULL }, 614 { 0x19, 0x19, NULL, NULL }, 615 { 0x1c, 0x1f, NULL, NULL }, 616 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate }, 617 { 0x30, 0x39, input_parameter, NULL }, 618 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore }, 619 { 0x3b, 0x3b, input_parameter, NULL }, 620 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore }, 621 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 622 { 0x7f, 0xff, NULL, NULL }, 623 624 { -1, -1, NULL, NULL } 625}; 626 627/* dcs_intermediate state table. */ 628static const struct input_transition input_state_dcs_intermediate_table[] = { 629 INPUT_STATE_ANYWHERE, 630 631 { 0x00, 0x17, NULL, NULL }, 632 { 0x19, 0x19, NULL, NULL }, 633 { 0x1c, 0x1f, NULL, NULL }, 634 { 0x20, 0x2f, input_intermediate, NULL }, 635 { 0x30, 0x3f, NULL, &input_state_dcs_ignore }, 636 { 0x40, 0x7e, input_input, &input_state_dcs_handler }, 637 { 0x7f, 0xff, NULL, NULL }, 638 639 { -1, -1, NULL, NULL } 640}; 641 642/* dcs_handler state table. */ 643static const struct input_transition input_state_dcs_handler_table[] = { 644 /* No INPUT_STATE_ANYWHERE */ 645 646 { 0x00, 0x1a, input_input, NULL }, 647 { 0x1b, 0x1b, NULL, &input_state_dcs_escape }, 648 { 0x1c, 0xff, input_input, NULL }, 649 650 { -1, -1, NULL, NULL } 651}; 652 653/* dcs_escape state table. */ 654static const struct input_transition input_state_dcs_escape_table[] = { 655 /* No INPUT_STATE_ANYWHERE */ 656 657 { 0x00, 0x5b, input_input, &input_state_dcs_handler }, 658 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground }, 659 { 0x5d, 0xff, input_input, &input_state_dcs_handler }, 660 661 { -1, -1, NULL, NULL } 662}; 663 664/* dcs_ignore state table. */ 665static const struct input_transition input_state_dcs_ignore_table[] = { 666 INPUT_STATE_ANYWHERE, 667 668 { 0x00, 0x17, NULL, NULL }, 669 { 0x19, 0x19, NULL, NULL }, 670 { 0x1c, 0x1f, NULL, NULL }, 671 { 0x20, 0xff, NULL, NULL }, 672 673 { -1, -1, NULL, NULL } 674}; 675 676/* osc_string state table. */ 677static const struct input_transition input_state_osc_string_table[] = { 678 INPUT_STATE_ANYWHERE, 679 680 { 0x00, 0x06, NULL, NULL }, 681 { 0x07, 0x07, input_end_bel, &input_state_ground }, 682 { 0x08, 0x17, NULL, NULL }, 683 { 0x19, 0x19, NULL, NULL }, 684 { 0x1c, 0x1f, NULL, NULL }, 685 { 0x20, 0xff, input_input, NULL }, 686 687 { -1, -1, NULL, NULL } 688}; 689 690/* apc_string state table. */ 691static const struct input_transition input_state_apc_string_table[] = { 692 INPUT_STATE_ANYWHERE, 693 694 { 0x00, 0x17, NULL, NULL }, 695 { 0x19, 0x19, NULL, NULL }, 696 { 0x1c, 0x1f, NULL, NULL }, 697 { 0x20, 0xff, input_input, NULL }, 698 699 { -1, -1, NULL, NULL } 700}; 701 702/* rename_string state table. */ 703static const struct input_transition input_state_rename_string_table[] = { 704 INPUT_STATE_ANYWHERE, 705 706 { 0x00, 0x17, NULL, NULL }, 707 { 0x19, 0x19, NULL, NULL }, 708 { 0x1c, 0x1f, NULL, NULL }, 709 { 0x20, 0xff, input_input, NULL }, 710 711 { -1, -1, NULL, NULL } 712}; 713 714/* consume_st state table. */ 715static const struct input_transition input_state_consume_st_table[] = { 716 INPUT_STATE_ANYWHERE, 717 718 { 0x00, 0x17, NULL, NULL }, 719 { 0x19, 0x19, NULL, NULL }, 720 { 0x1c, 0x1f, NULL, NULL }, 721 { 0x20, 0xff, NULL, NULL }, 722 723 { -1, -1, NULL, NULL } 724}; 725 726/* Input table compare. */ 727static int 728input_table_compare(const void *key, const void *value) 729{ 730 const struct input_ctx *ictx = key; 731 const struct input_table_entry *entry = value; 732 733 if (ictx->ch != entry->ch) 734 return (ictx->ch - entry->ch); 735 return (strcmp(ictx->interm_buf, entry->interm)); 736} 737 738/* 739 * Timer - if this expires then have been waiting for a terminator for too 740 * long, so reset to ground. 741 */ 742static void 743input_timer_callback(__unused int fd, __unused short events, void *arg) 744{ 745 struct input_ctx *ictx = arg; 746 747 log_debug("%s: %s expired" , __func__, ictx->state->name); 748 input_reset(ictx, 0); 749} 750 751/* Start the timer. */ 752static void 753input_start_timer(struct input_ctx *ictx) 754{ 755 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 }; 756 757 event_del(&ictx->timer); 758 event_add(&ictx->timer, &tv); 759} 760 761/* Reset cell state to default. */ 762static void 763input_reset_cell(struct input_ctx *ictx) 764{ 765 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell); 766 ictx->cell.set = 0; 767 ictx->cell.g0set = ictx->cell.g1set = 0; 768 769 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 770 ictx->old_cx = 0; 771 ictx->old_cy = 0; 772} 773 774/* Save screen state. */ 775static void 776input_save_state(struct input_ctx *ictx) 777{ 778 struct screen_write_ctx *sctx = &ictx->ctx; 779 struct screen *s = sctx->s; 780 781 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell); 782 ictx->old_cx = s->cx; 783 ictx->old_cy = s->cy; 784 ictx->old_mode = s->mode; 785} 786 787/* Restore screen state. */ 788static void 789input_restore_state(struct input_ctx *ictx) 790{ 791 struct screen_write_ctx *sctx = &ictx->ctx; 792 793 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell); 794 if (ictx->old_mode & MODE_ORIGIN) 795 screen_write_mode_set(sctx, MODE_ORIGIN); 796 else 797 screen_write_mode_clear(sctx, MODE_ORIGIN); 798 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0); 799} 800 801/* Initialise input parser. */ 802struct input_ctx * 803input_init(struct window_pane *wp, struct bufferevent *bev, 804 struct colour_palette *palette) 805{ 806 struct input_ctx *ictx; 807 808 ictx = xcalloc(1, sizeof *ictx); 809 ictx->wp = wp; 810 ictx->event = bev; 811 ictx->palette = palette; 812 813 ictx->input_space = INPUT_BUF_START; 814 ictx->input_buf = xmalloc(INPUT_BUF_START); 815 816 ictx->since_ground = evbuffer_new(); 817 if (ictx->since_ground == NULL) 818 fatalx("out of memory"); 819 820 evtimer_set(&ictx->timer, input_timer_callback, ictx); 821 822 input_reset(ictx, 0); 823 return (ictx); 824} 825 826/* Destroy input parser. */ 827void 828input_free(struct input_ctx *ictx) 829{ 830 u_int i; 831 832 for (i = 0; i < ictx->param_list_len; i++) { 833 if (ictx->param_list[i].type == INPUT_STRING) 834 free(ictx->param_list[i].str); 835 } 836 837 event_del(&ictx->timer); 838 839 free(ictx->input_buf); 840 evbuffer_free(ictx->since_ground); 841 842 free(ictx); 843} 844 845/* Reset input state and clear screen. */ 846void 847input_reset(struct input_ctx *ictx, int clear) 848{ 849 struct screen_write_ctx *sctx = &ictx->ctx; 850 struct window_pane *wp = ictx->wp; 851 852 input_reset_cell(ictx); 853 854 if (clear && wp != NULL) { 855 if (TAILQ_EMPTY(&wp->modes)) 856 screen_write_start_pane(sctx, wp, &wp->base); 857 else 858 screen_write_start(sctx, &wp->base); 859 screen_write_reset(sctx); 860 screen_write_stop(sctx); 861 } 862 863 input_clear(ictx); 864 865 ictx->last = -1; 866 867 ictx->state = &input_state_ground; 868 ictx->flags = 0; 869} 870 871/* Return pending data. */ 872struct evbuffer * 873input_pending(struct input_ctx *ictx) 874{ 875 return (ictx->since_ground); 876} 877 878/* Change input state. */ 879static void 880input_set_state(struct input_ctx *ictx, const struct input_transition *itr) 881{ 882 if (ictx->state->exit != NULL) 883 ictx->state->exit(ictx); 884 ictx->state = itr->state; 885 if (ictx->state->enter != NULL) 886 ictx->state->enter(ictx); 887} 888 889/* Parse data. */ 890static void 891input_parse(struct input_ctx *ictx, u_char *buf, size_t len) 892{ 893 struct screen_write_ctx *sctx = &ictx->ctx; 894 const struct input_state *state = NULL; 895 const struct input_transition *itr = NULL; 896 size_t off = 0; 897 898 /* Parse the input. */ 899 while (off < len) { 900 ictx->ch = buf[off++]; 901 902 /* Find the transition. */ 903 if (ictx->state != state || 904 itr == NULL || 905 ictx->ch < itr->first || 906 ictx->ch > itr->last) { 907 itr = ictx->state->transitions; 908 while (itr->first != -1 && itr->last != -1) { 909 if (ictx->ch >= itr->first && 910 ictx->ch <= itr->last) 911 break; 912 itr++; 913 } 914 if (itr->first == -1 || itr->last == -1) { 915 /* No transition? Eh? */ 916 fatalx("no transition from state"); 917 } 918 } 919 state = ictx->state; 920 921 /* 922 * Any state except print stops the current collection. This is 923 * an optimization to avoid checking if the attributes have 924 * changed for every character. It will stop unnecessarily for 925 * sequences that don't make a terminal change, but they should 926 * be the minority. 927 */ 928 if (itr->handler != input_print) 929 screen_write_collect_end(sctx); 930 931 /* 932 * Execute the handler, if any. Don't switch state if it 933 * returns non-zero. 934 */ 935 if (itr->handler != NULL && itr->handler(ictx) != 0) 936 continue; 937 938 /* And switch state, if necessary. */ 939 if (itr->state != NULL) 940 input_set_state(ictx, itr); 941 942 /* If not in ground state, save input. */ 943 if (ictx->state != &input_state_ground) 944 evbuffer_add(ictx->since_ground, &ictx->ch, 1); 945 } 946} 947 948/* Parse input from pane. */ 949void 950input_parse_pane(struct window_pane *wp) 951{ 952 void *new_data; 953 size_t new_size; 954 955 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size); 956 input_parse_buffer(wp, new_data, new_size); 957 window_pane_update_used_data(wp, &wp->offset, new_size); 958} 959 960/* Parse given input. */ 961void 962input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len) 963{ 964 struct input_ctx *ictx = wp->ictx; 965 struct screen_write_ctx *sctx = &ictx->ctx; 966 967 if (len == 0) 968 return; 969 970 window_update_activity(wp->window); 971 wp->flags |= PANE_CHANGED; 972 973 /* NULL wp if there is a mode set as don't want to update the tty. */ 974 if (TAILQ_EMPTY(&wp->modes)) 975 screen_write_start_pane(sctx, wp, &wp->base); 976 else 977 screen_write_start(sctx, &wp->base); 978 979 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id, 980 ictx->state->name, len, (int)len, buf); 981 982 input_parse(ictx, buf, len); 983 screen_write_stop(sctx); 984} 985 986/* Parse given input for screen. */ 987void 988input_parse_screen(struct input_ctx *ictx, struct screen *s, 989 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len) 990{ 991 struct screen_write_ctx *sctx = &ictx->ctx; 992 993 if (len == 0) 994 return; 995 996 screen_write_start_callback(sctx, s, cb, arg); 997 input_parse(ictx, buf, len); 998 screen_write_stop(sctx); 999} 1000 1001/* Split the parameter list (if any). */ 1002static int 1003input_split(struct input_ctx *ictx) 1004{ 1005 const char *errstr; 1006 char *ptr, *out; 1007 struct input_param *ip; 1008 u_int i; 1009 1010 for (i = 0; i < ictx->param_list_len; i++) { 1011 if (ictx->param_list[i].type == INPUT_STRING) 1012 free(ictx->param_list[i].str); 1013 } 1014 ictx->param_list_len = 0; 1015 1016 if (ictx->param_len == 0) 1017 return (0); 1018 ip = &ictx->param_list[0]; 1019 1020 ptr = ictx->param_buf; 1021 while ((out = strsep(&ptr, ";")) != NULL) { 1022 if (*out == '\0') 1023 ip->type = INPUT_MISSING; 1024 else { 1025 if (strchr(out, ':') != NULL) { 1026 ip->type = INPUT_STRING; 1027 ip->str = xstrdup(out); 1028 } else { 1029 ip->type = INPUT_NUMBER; 1030 ip->num = strtonum(out, 0, INT_MAX, &errstr); 1031 if (errstr != NULL) 1032 return (-1); 1033 } 1034 } 1035 ip = &ictx->param_list[++ictx->param_list_len]; 1036 if (ictx->param_list_len == nitems(ictx->param_list)) 1037 return (-1); 1038 } 1039 1040 for (i = 0; i < ictx->param_list_len; i++) { 1041 ip = &ictx->param_list[i]; 1042 if (ip->type == INPUT_MISSING) 1043 log_debug("parameter %u: missing", i); 1044 else if (ip->type == INPUT_STRING) 1045 log_debug("parameter %u: string %s", i, ip->str); 1046 else if (ip->type == INPUT_NUMBER) 1047 log_debug("parameter %u: number %d", i, ip->num); 1048 } 1049 1050 return (0); 1051} 1052 1053/* Get an argument or return default value. */ 1054static int 1055input_get(struct input_ctx *ictx, u_int validx, int minval, int defval) 1056{ 1057 struct input_param *ip; 1058 int retval; 1059 1060 if (validx >= ictx->param_list_len) 1061 return (defval); 1062 ip = &ictx->param_list[validx]; 1063 if (ip->type == INPUT_MISSING) 1064 return (defval); 1065 if (ip->type == INPUT_STRING) 1066 return (-1); 1067 retval = ip->num; 1068 if (retval < minval) 1069 return (minval); 1070 return (retval); 1071} 1072 1073/* Reply to terminal query. */ 1074static void 1075input_reply(struct input_ctx *ictx, const char *fmt, ...) 1076{ 1077 struct bufferevent *bev = ictx->event; 1078 va_list ap; 1079 char *reply; 1080 1081 va_start(ap, fmt); 1082 xvasprintf(&reply, fmt, ap); 1083 va_end(ap); 1084 1085 bufferevent_write(bev, reply, strlen(reply)); 1086 free(reply); 1087} 1088 1089/* Clear saved state. */ 1090static void 1091input_clear(struct input_ctx *ictx) 1092{ 1093 event_del(&ictx->timer); 1094 1095 *ictx->interm_buf = '\0'; 1096 ictx->interm_len = 0; 1097 1098 *ictx->param_buf = '\0'; 1099 ictx->param_len = 0; 1100 1101 *ictx->input_buf = '\0'; 1102 ictx->input_len = 0; 1103 1104 ictx->input_end = INPUT_END_ST; 1105 1106 ictx->flags &= ~INPUT_DISCARD; 1107} 1108 1109/* Reset for ground state. */ 1110static void 1111input_ground(struct input_ctx *ictx) 1112{ 1113 event_del(&ictx->timer); 1114 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1115 1116 if (ictx->input_space > INPUT_BUF_START) { 1117 ictx->input_space = INPUT_BUF_START; 1118 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1119 } 1120} 1121 1122/* Output this character to the screen. */ 1123static int 1124input_print(struct input_ctx *ictx) 1125{ 1126 struct screen_write_ctx *sctx = &ictx->ctx; 1127 int set; 1128 1129 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1130 1131 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1132 if (set == 1) 1133 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1134 else 1135 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1136 1137 utf8_set(&ictx->cell.cell.data, ictx->ch); 1138 screen_write_collect_add(sctx, &ictx->cell.cell); 1139 ictx->last = ictx->ch; 1140 1141 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1142 1143 return (0); 1144} 1145 1146/* Collect intermediate string. */ 1147static int 1148input_intermediate(struct input_ctx *ictx) 1149{ 1150 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1151 ictx->flags |= INPUT_DISCARD; 1152 else { 1153 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1154 ictx->interm_buf[ictx->interm_len] = '\0'; 1155 } 1156 1157 return (0); 1158} 1159 1160/* Collect parameter string. */ 1161static int 1162input_parameter(struct input_ctx *ictx) 1163{ 1164 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1165 ictx->flags |= INPUT_DISCARD; 1166 else { 1167 ictx->param_buf[ictx->param_len++] = ictx->ch; 1168 ictx->param_buf[ictx->param_len] = '\0'; 1169 } 1170 1171 return (0); 1172} 1173 1174/* Collect input string. */ 1175static int 1176input_input(struct input_ctx *ictx) 1177{ 1178 size_t available; 1179 1180 available = ictx->input_space; 1181 while (ictx->input_len + 1 >= available) { 1182 available *= 2; 1183 if (available > INPUT_BUF_LIMIT) { 1184 ictx->flags |= INPUT_DISCARD; 1185 return (0); 1186 } 1187 ictx->input_buf = xrealloc(ictx->input_buf, available); 1188 ictx->input_space = available; 1189 } 1190 ictx->input_buf[ictx->input_len++] = ictx->ch; 1191 ictx->input_buf[ictx->input_len] = '\0'; 1192 1193 return (0); 1194} 1195 1196/* Execute C0 control sequence. */ 1197static int 1198input_c0_dispatch(struct input_ctx *ictx) 1199{ 1200 struct screen_write_ctx *sctx = &ictx->ctx; 1201 struct window_pane *wp = ictx->wp; 1202 struct screen *s = sctx->s; 1203 1204 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1205 1206 log_debug("%s: '%c'", __func__, ictx->ch); 1207 1208 switch (ictx->ch) { 1209 case '\000': /* NUL */ 1210 break; 1211 case '\007': /* BEL */ 1212 if (wp != NULL) 1213 alerts_queue(wp->window, WINDOW_BELL); 1214 break; 1215 case '\010': /* BS */ 1216 screen_write_backspace(sctx); 1217 break; 1218 case '\011': /* HT */ 1219 /* Don't tab beyond the end of the line. */ 1220 if (s->cx >= screen_size_x(s) - 1) 1221 break; 1222 1223 /* Find the next tab point, or use the last column if none. */ 1224 do { 1225 s->cx++; 1226 if (bit_test(s->tabs, s->cx)) 1227 break; 1228 } while (s->cx < screen_size_x(s) - 1); 1229 break; 1230 case '\012': /* LF */ 1231 case '\013': /* VT */ 1232 case '\014': /* FF */ 1233 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1234 if (s->mode & MODE_CRLF) 1235 screen_write_carriagereturn(sctx); 1236 break; 1237 case '\015': /* CR */ 1238 screen_write_carriagereturn(sctx); 1239 break; 1240 case '\016': /* SO */ 1241 ictx->cell.set = 1; 1242 break; 1243 case '\017': /* SI */ 1244 ictx->cell.set = 0; 1245 break; 1246 default: 1247 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1248 break; 1249 } 1250 1251 ictx->last = -1; 1252 return (0); 1253} 1254 1255/* Execute escape sequence. */ 1256static int 1257input_esc_dispatch(struct input_ctx *ictx) 1258{ 1259 struct screen_write_ctx *sctx = &ictx->ctx; 1260 struct screen *s = sctx->s; 1261 struct input_table_entry *entry; 1262 1263 if (ictx->flags & INPUT_DISCARD) 1264 return (0); 1265 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1266 1267 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1268 sizeof input_esc_table[0], input_table_compare); 1269 if (entry == NULL) { 1270 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1271 return (0); 1272 } 1273 1274 switch (entry->type) { 1275 case INPUT_ESC_RIS: 1276 colour_palette_clear(ictx->palette); 1277 input_reset_cell(ictx); 1278 screen_write_reset(sctx); 1279 screen_write_fullredraw(sctx); 1280 break; 1281 case INPUT_ESC_IND: 1282 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1283 break; 1284 case INPUT_ESC_NEL: 1285 screen_write_carriagereturn(sctx); 1286 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1287 break; 1288 case INPUT_ESC_HTS: 1289 if (s->cx < screen_size_x(s)) 1290 bit_set(s->tabs, s->cx); 1291 break; 1292 case INPUT_ESC_RI: 1293 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1294 break; 1295 case INPUT_ESC_DECKPAM: 1296 screen_write_mode_set(sctx, MODE_KKEYPAD); 1297 break; 1298 case INPUT_ESC_DECKPNM: 1299 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1300 break; 1301 case INPUT_ESC_DECSC: 1302 input_save_state(ictx); 1303 break; 1304 case INPUT_ESC_DECRC: 1305 input_restore_state(ictx); 1306 break; 1307 case INPUT_ESC_DECALN: 1308 screen_write_alignmenttest(sctx); 1309 break; 1310 case INPUT_ESC_SCSG0_ON: 1311 ictx->cell.g0set = 1; 1312 break; 1313 case INPUT_ESC_SCSG0_OFF: 1314 ictx->cell.g0set = 0; 1315 break; 1316 case INPUT_ESC_SCSG1_ON: 1317 ictx->cell.g1set = 1; 1318 break; 1319 case INPUT_ESC_SCSG1_OFF: 1320 ictx->cell.g1set = 0; 1321 break; 1322 case INPUT_ESC_ST: 1323 /* ST terminates OSC but the state transition already did it. */ 1324 break; 1325 } 1326 1327 ictx->last = -1; 1328 return (0); 1329} 1330 1331/* Execute control sequence. */ 1332static int 1333input_csi_dispatch(struct input_ctx *ictx) 1334{ 1335 struct screen_write_ctx *sctx = &ictx->ctx; 1336 struct screen *s = sctx->s; 1337 struct input_table_entry *entry; 1338 int i, n, m; 1339 u_int cx, bg = ictx->cell.cell.bg; 1340 1341 if (ictx->flags & INPUT_DISCARD) 1342 return (0); 1343 1344 log_debug("%s: '%c' \"%s\" \"%s\"", 1345 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1346 1347 if (input_split(ictx) != 0) 1348 return (0); 1349 1350 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1351 sizeof input_csi_table[0], input_table_compare); 1352 if (entry == NULL) { 1353 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1354 return (0); 1355 } 1356 1357 switch (entry->type) { 1358 case INPUT_CSI_CBT: 1359 /* Find the previous tab point, n times. */ 1360 cx = s->cx; 1361 if (cx > screen_size_x(s) - 1) 1362 cx = screen_size_x(s) - 1; 1363 n = input_get(ictx, 0, 1, 1); 1364 if (n == -1) 1365 break; 1366 while (cx > 0 && n-- > 0) { 1367 do 1368 cx--; 1369 while (cx > 0 && !bit_test(s->tabs, cx)); 1370 } 1371 s->cx = cx; 1372 break; 1373 case INPUT_CSI_CUB: 1374 n = input_get(ictx, 0, 1, 1); 1375 if (n != -1) 1376 screen_write_cursorleft(sctx, n); 1377 break; 1378 case INPUT_CSI_CUD: 1379 n = input_get(ictx, 0, 1, 1); 1380 if (n != -1) 1381 screen_write_cursordown(sctx, n); 1382 break; 1383 case INPUT_CSI_CUF: 1384 n = input_get(ictx, 0, 1, 1); 1385 if (n != -1) 1386 screen_write_cursorright(sctx, n); 1387 break; 1388 case INPUT_CSI_CUP: 1389 n = input_get(ictx, 0, 1, 1); 1390 m = input_get(ictx, 1, 1, 1); 1391 if (n != -1 && m != -1) 1392 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1393 break; 1394 case INPUT_CSI_MODSET: 1395 n = input_get(ictx, 0, 0, 0); 1396 m = input_get(ictx, 1, 0, 0); 1397 if (options_get_number(global_options, "extended-keys") == 2) 1398 break; 1399 if (n == 0 || (n == 4 && m == 0)) 1400 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1401 else if (n == 4 && (m == 1 || m == 2)) 1402 screen_write_mode_set(sctx, MODE_KEXTENDED); 1403 break; 1404 case INPUT_CSI_MODOFF: 1405 n = input_get(ictx, 0, 0, 0); 1406 if (n == 4) 1407 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1408 break; 1409 case INPUT_CSI_WINOPS: 1410 input_csi_dispatch_winops(ictx); 1411 break; 1412 case INPUT_CSI_CUU: 1413 n = input_get(ictx, 0, 1, 1); 1414 if (n != -1) 1415 screen_write_cursorup(sctx, n); 1416 break; 1417 case INPUT_CSI_CNL: 1418 n = input_get(ictx, 0, 1, 1); 1419 if (n != -1) { 1420 screen_write_carriagereturn(sctx); 1421 screen_write_cursordown(sctx, n); 1422 } 1423 break; 1424 case INPUT_CSI_CPL: 1425 n = input_get(ictx, 0, 1, 1); 1426 if (n != -1) { 1427 screen_write_carriagereturn(sctx); 1428 screen_write_cursorup(sctx, n); 1429 } 1430 break; 1431 case INPUT_CSI_DA: 1432 switch (input_get(ictx, 0, 0, 0)) { 1433 case -1: 1434 break; 1435 case 0: 1436 input_reply(ictx, "\033[?1;2c"); 1437 break; 1438 default: 1439 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1440 break; 1441 } 1442 break; 1443 case INPUT_CSI_DA_TWO: 1444 switch (input_get(ictx, 0, 0, 0)) { 1445 case -1: 1446 break; 1447 case 0: 1448 input_reply(ictx, "\033[>84;0;0c"); 1449 break; 1450 default: 1451 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1452 break; 1453 } 1454 break; 1455 case INPUT_CSI_ECH: 1456 n = input_get(ictx, 0, 1, 1); 1457 if (n != -1) 1458 screen_write_clearcharacter(sctx, n, bg); 1459 break; 1460 case INPUT_CSI_DCH: 1461 n = input_get(ictx, 0, 1, 1); 1462 if (n != -1) 1463 screen_write_deletecharacter(sctx, n, bg); 1464 break; 1465 case INPUT_CSI_DECSTBM: 1466 n = input_get(ictx, 0, 1, 1); 1467 m = input_get(ictx, 1, 1, screen_size_y(s)); 1468 if (n != -1 && m != -1) 1469 screen_write_scrollregion(sctx, n - 1, m - 1); 1470 break; 1471 case INPUT_CSI_DL: 1472 n = input_get(ictx, 0, 1, 1); 1473 if (n != -1) 1474 screen_write_deleteline(sctx, n, bg); 1475 break; 1476 case INPUT_CSI_DSR: 1477 switch (input_get(ictx, 0, 0, 0)) { 1478 case -1: 1479 break; 1480 case 5: 1481 input_reply(ictx, "\033[0n"); 1482 break; 1483 case 6: 1484 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1485 break; 1486 default: 1487 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1488 break; 1489 } 1490 break; 1491 case INPUT_CSI_ED: 1492 switch (input_get(ictx, 0, 0, 0)) { 1493 case -1: 1494 break; 1495 case 0: 1496 screen_write_clearendofscreen(sctx, bg); 1497 break; 1498 case 1: 1499 screen_write_clearstartofscreen(sctx, bg); 1500 break; 1501 case 2: 1502 screen_write_clearscreen(sctx, bg); 1503 break; 1504 case 3: 1505 if (input_get(ictx, 1, 0, 0) == 0) { 1506 /* 1507 * Linux console extension to clear history 1508 * (for example before locking the screen). 1509 */ 1510 screen_write_clearhistory(sctx); 1511 } 1512 break; 1513 default: 1514 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1515 break; 1516 } 1517 break; 1518 case INPUT_CSI_EL: 1519 switch (input_get(ictx, 0, 0, 0)) { 1520 case -1: 1521 break; 1522 case 0: 1523 screen_write_clearendofline(sctx, bg); 1524 break; 1525 case 1: 1526 screen_write_clearstartofline(sctx, bg); 1527 break; 1528 case 2: 1529 screen_write_clearline(sctx, bg); 1530 break; 1531 default: 1532 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1533 break; 1534 } 1535 break; 1536 case INPUT_CSI_HPA: 1537 n = input_get(ictx, 0, 1, 1); 1538 if (n != -1) 1539 screen_write_cursormove(sctx, n - 1, -1, 1); 1540 break; 1541 case INPUT_CSI_ICH: 1542 n = input_get(ictx, 0, 1, 1); 1543 if (n != -1) 1544 screen_write_insertcharacter(sctx, n, bg); 1545 break; 1546 case INPUT_CSI_IL: 1547 n = input_get(ictx, 0, 1, 1); 1548 if (n != -1) 1549 screen_write_insertline(sctx, n, bg); 1550 break; 1551 case INPUT_CSI_REP: 1552 n = input_get(ictx, 0, 1, 1); 1553 if (n == -1) 1554 break; 1555 1556 m = screen_size_x(s) - s->cx; 1557 if (n > m) 1558 n = m; 1559 1560 if (ictx->last == -1) 1561 break; 1562 ictx->ch = ictx->last; 1563 1564 for (i = 0; i < n; i++) 1565 input_print(ictx); 1566 break; 1567 case INPUT_CSI_RCP: 1568 input_restore_state(ictx); 1569 break; 1570 case INPUT_CSI_RM: 1571 input_csi_dispatch_rm(ictx); 1572 break; 1573 case INPUT_CSI_RM_PRIVATE: 1574 input_csi_dispatch_rm_private(ictx); 1575 break; 1576 case INPUT_CSI_SCP: 1577 input_save_state(ictx); 1578 break; 1579 case INPUT_CSI_SGR: 1580 input_csi_dispatch_sgr(ictx); 1581 break; 1582 case INPUT_CSI_SM: 1583 input_csi_dispatch_sm(ictx); 1584 break; 1585 case INPUT_CSI_SM_PRIVATE: 1586 input_csi_dispatch_sm_private(ictx); 1587 break; 1588 case INPUT_CSI_SU: 1589 n = input_get(ictx, 0, 1, 1); 1590 if (n != -1) 1591 screen_write_scrollup(sctx, n, bg); 1592 break; 1593 case INPUT_CSI_SD: 1594 n = input_get(ictx, 0, 1, 1); 1595 if (n != -1) 1596 screen_write_scrolldown(sctx, n, bg); 1597 break; 1598 case INPUT_CSI_TBC: 1599 switch (input_get(ictx, 0, 0, 0)) { 1600 case -1: 1601 break; 1602 case 0: 1603 if (s->cx < screen_size_x(s)) 1604 bit_clear(s->tabs, s->cx); 1605 break; 1606 case 3: 1607 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1608 break; 1609 default: 1610 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1611 break; 1612 } 1613 break; 1614 case INPUT_CSI_VPA: 1615 n = input_get(ictx, 0, 1, 1); 1616 if (n != -1) 1617 screen_write_cursormove(sctx, -1, n - 1, 1); 1618 break; 1619 case INPUT_CSI_DECSCUSR: 1620 n = input_get(ictx, 0, 0, 0); 1621 if (n != -1) 1622 screen_set_cursor_style(n, &s->cstyle, &s->mode); 1623 break; 1624 case INPUT_CSI_XDA: 1625 n = input_get(ictx, 0, 0, 0); 1626 if (n == 0) 1627 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1628 break; 1629 1630 } 1631 1632 ictx->last = -1; 1633 return (0); 1634} 1635 1636/* Handle CSI RM. */ 1637static void 1638input_csi_dispatch_rm(struct input_ctx *ictx) 1639{ 1640 struct screen_write_ctx *sctx = &ictx->ctx; 1641 u_int i; 1642 1643 for (i = 0; i < ictx->param_list_len; i++) { 1644 switch (input_get(ictx, i, 0, -1)) { 1645 case -1: 1646 break; 1647 case 4: /* IRM */ 1648 screen_write_mode_clear(sctx, MODE_INSERT); 1649 break; 1650 case 34: 1651 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE); 1652 break; 1653 default: 1654 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1655 break; 1656 } 1657 } 1658} 1659 1660/* Handle CSI private RM. */ 1661static void 1662input_csi_dispatch_rm_private(struct input_ctx *ictx) 1663{ 1664 struct screen_write_ctx *sctx = &ictx->ctx; 1665 struct grid_cell *gc = &ictx->cell.cell; 1666 u_int i; 1667 1668 for (i = 0; i < ictx->param_list_len; i++) { 1669 switch (input_get(ictx, i, 0, -1)) { 1670 case -1: 1671 break; 1672 case 1: /* DECCKM */ 1673 screen_write_mode_clear(sctx, MODE_KCURSOR); 1674 break; 1675 case 3: /* DECCOLM */ 1676 screen_write_cursormove(sctx, 0, 0, 1); 1677 screen_write_clearscreen(sctx, gc->bg); 1678 break; 1679 case 6: /* DECOM */ 1680 screen_write_mode_clear(sctx, MODE_ORIGIN); 1681 screen_write_cursormove(sctx, 0, 0, 1); 1682 break; 1683 case 7: /* DECAWM */ 1684 screen_write_mode_clear(sctx, MODE_WRAP); 1685 break; 1686 case 12: 1687 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING); 1688 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1689 break; 1690 case 25: /* TCEM */ 1691 screen_write_mode_clear(sctx, MODE_CURSOR); 1692 break; 1693 case 1000: 1694 case 1001: 1695 case 1002: 1696 case 1003: 1697 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1698 break; 1699 case 1004: 1700 screen_write_mode_clear(sctx, MODE_FOCUSON); 1701 break; 1702 case 1005: 1703 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1704 break; 1705 case 1006: 1706 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1707 break; 1708 case 47: 1709 case 1047: 1710 screen_write_alternateoff(sctx, gc, 0); 1711 break; 1712 case 1049: 1713 screen_write_alternateoff(sctx, gc, 1); 1714 break; 1715 case 2004: 1716 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1717 break; 1718 default: 1719 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1720 break; 1721 } 1722 } 1723} 1724 1725/* Handle CSI SM. */ 1726static void 1727input_csi_dispatch_sm(struct input_ctx *ictx) 1728{ 1729 struct screen_write_ctx *sctx = &ictx->ctx; 1730 u_int i; 1731 1732 for (i = 0; i < ictx->param_list_len; i++) { 1733 switch (input_get(ictx, i, 0, -1)) { 1734 case -1: 1735 break; 1736 case 4: /* IRM */ 1737 screen_write_mode_set(sctx, MODE_INSERT); 1738 break; 1739 case 34: 1740 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE); 1741 break; 1742 default: 1743 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1744 break; 1745 } 1746 } 1747} 1748 1749/* Handle CSI private SM. */ 1750static void 1751input_csi_dispatch_sm_private(struct input_ctx *ictx) 1752{ 1753 struct screen_write_ctx *sctx = &ictx->ctx; 1754 struct window_pane *wp = ictx->wp; 1755 struct grid_cell *gc = &ictx->cell.cell; 1756 u_int i; 1757 1758 for (i = 0; i < ictx->param_list_len; i++) { 1759 switch (input_get(ictx, i, 0, -1)) { 1760 case -1: 1761 break; 1762 case 1: /* DECCKM */ 1763 screen_write_mode_set(sctx, MODE_KCURSOR); 1764 break; 1765 case 3: /* DECCOLM */ 1766 screen_write_cursormove(sctx, 0, 0, 1); 1767 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1768 break; 1769 case 6: /* DECOM */ 1770 screen_write_mode_set(sctx, MODE_ORIGIN); 1771 screen_write_cursormove(sctx, 0, 0, 1); 1772 break; 1773 case 7: /* DECAWM */ 1774 screen_write_mode_set(sctx, MODE_WRAP); 1775 break; 1776 case 12: 1777 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING); 1778 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1779 break; 1780 case 25: /* TCEM */ 1781 screen_write_mode_set(sctx, MODE_CURSOR); 1782 break; 1783 case 1000: 1784 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1785 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1786 break; 1787 case 1002: 1788 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1789 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1790 break; 1791 case 1003: 1792 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1793 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1794 break; 1795 case 1004: 1796 if (sctx->s->mode & MODE_FOCUSON) 1797 break; 1798 screen_write_mode_set(sctx, MODE_FOCUSON); 1799 if (wp == NULL) 1800 break; 1801 if (wp->flags & PANE_FOCUSED) 1802 bufferevent_write(wp->event, "\033[I", 3); 1803 else 1804 bufferevent_write(wp->event, "\033[O", 3); 1805 break; 1806 case 1005: 1807 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1808 break; 1809 case 1006: 1810 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1811 break; 1812 case 47: 1813 case 1047: 1814 screen_write_alternateon(sctx, gc, 0); 1815 break; 1816 case 1049: 1817 screen_write_alternateon(sctx, gc, 1); 1818 break; 1819 case 2004: 1820 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1821 break; 1822 default: 1823 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1824 break; 1825 } 1826 } 1827} 1828 1829/* Handle CSI window operations. */ 1830static void 1831input_csi_dispatch_winops(struct input_ctx *ictx) 1832{ 1833 struct screen_write_ctx *sctx = &ictx->ctx; 1834 struct screen *s = sctx->s; 1835 struct window_pane *wp = ictx->wp; 1836 u_int x = screen_size_x(s), y = screen_size_y(s); 1837 int n, m; 1838 1839 m = 0; 1840 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1841 switch (n) { 1842 case 1: 1843 case 2: 1844 case 5: 1845 case 6: 1846 case 7: 1847 case 11: 1848 case 13: 1849 case 14: 1850 case 19: 1851 case 20: 1852 case 21: 1853 case 24: 1854 break; 1855 case 3: 1856 case 4: 1857 case 8: 1858 m++; 1859 if (input_get(ictx, m, 0, -1) == -1) 1860 return; 1861 /* FALLTHROUGH */ 1862 case 9: 1863 case 10: 1864 m++; 1865 if (input_get(ictx, m, 0, -1) == -1) 1866 return; 1867 break; 1868 case 22: 1869 m++; 1870 switch (input_get(ictx, m, 0, -1)) { 1871 case -1: 1872 return; 1873 case 0: 1874 case 2: 1875 screen_push_title(sctx->s); 1876 break; 1877 } 1878 break; 1879 case 23: 1880 m++; 1881 switch (input_get(ictx, m, 0, -1)) { 1882 case -1: 1883 return; 1884 case 0: 1885 case 2: 1886 screen_pop_title(sctx->s); 1887 if (wp == NULL) 1888 break; 1889 notify_pane("pane-title-changed", wp); 1890 server_redraw_window_borders(wp->window); 1891 server_status_window(wp->window); 1892 break; 1893 } 1894 break; 1895 case 18: 1896 input_reply(ictx, "\033[8;%u;%ut", x, y); 1897 break; 1898 default: 1899 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1900 break; 1901 } 1902 m++; 1903 } 1904} 1905 1906/* Helper for 256 colour SGR. */ 1907static int 1908input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1909{ 1910 struct grid_cell *gc = &ictx->cell.cell; 1911 1912 if (c == -1 || c > 255) { 1913 if (fgbg == 38) 1914 gc->fg = 8; 1915 else if (fgbg == 48) 1916 gc->bg = 8; 1917 } else { 1918 if (fgbg == 38) 1919 gc->fg = c | COLOUR_FLAG_256; 1920 else if (fgbg == 48) 1921 gc->bg = c | COLOUR_FLAG_256; 1922 else if (fgbg == 58) 1923 gc->us = c | COLOUR_FLAG_256; 1924 } 1925 return (1); 1926} 1927 1928/* Handle CSI SGR for 256 colours. */ 1929static void 1930input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1931{ 1932 int c; 1933 1934 c = input_get(ictx, (*i) + 1, 0, -1); 1935 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1936 (*i)++; 1937} 1938 1939/* Helper for RGB colour SGR. */ 1940static int 1941input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1942 int b) 1943{ 1944 struct grid_cell *gc = &ictx->cell.cell; 1945 1946 if (r == -1 || r > 255) 1947 return (0); 1948 if (g == -1 || g > 255) 1949 return (0); 1950 if (b == -1 || b > 255) 1951 return (0); 1952 1953 if (fgbg == 38) 1954 gc->fg = colour_join_rgb(r, g, b); 1955 else if (fgbg == 48) 1956 gc->bg = colour_join_rgb(r, g, b); 1957 else if (fgbg == 58) 1958 gc->us = colour_join_rgb(r, g, b); 1959 return (1); 1960} 1961 1962/* Handle CSI SGR for RGB colours. */ 1963static void 1964input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1965{ 1966 int r, g, b; 1967 1968 r = input_get(ictx, (*i) + 1, 0, -1); 1969 g = input_get(ictx, (*i) + 2, 0, -1); 1970 b = input_get(ictx, (*i) + 3, 0, -1); 1971 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1972 (*i) += 3; 1973} 1974 1975/* Handle CSI SGR with a ISO parameter. */ 1976static void 1977input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1978{ 1979 struct grid_cell *gc = &ictx->cell.cell; 1980 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1981 int p[8]; 1982 u_int n; 1983 const char *errstr; 1984 1985 for (n = 0; n < nitems(p); n++) 1986 p[n] = -1; 1987 n = 0; 1988 1989 ptr = copy = xstrdup(s); 1990 while ((out = strsep(&ptr, ":")) != NULL) { 1991 if (*out != '\0') { 1992 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1993 if (errstr != NULL || n == nitems(p)) { 1994 free(copy); 1995 return; 1996 } 1997 } else { 1998 n++; 1999 if (n == nitems(p)) { 2000 free(copy); 2001 return; 2002 } 2003 } 2004 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 2005 } 2006 free(copy); 2007 2008 if (n == 0) 2009 return; 2010 if (p[0] == 4) { 2011 if (n != 2) 2012 return; 2013 switch (p[1]) { 2014 case 0: 2015 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2016 break; 2017 case 1: 2018 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2019 gc->attr |= GRID_ATTR_UNDERSCORE; 2020 break; 2021 case 2: 2022 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2023 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2024 break; 2025 case 3: 2026 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2027 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2028 break; 2029 case 4: 2030 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2031 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2032 break; 2033 case 5: 2034 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2035 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2036 break; 2037 } 2038 return; 2039 } 2040 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2041 return; 2042 switch (p[1]) { 2043 case 2: 2044 if (n < 3) 2045 break; 2046 if (n == 5) 2047 i = 2; 2048 else 2049 i = 3; 2050 if (n < i + 3) 2051 break; 2052 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2053 p[i + 2]); 2054 break; 2055 case 5: 2056 if (n < 3) 2057 break; 2058 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2059 break; 2060 } 2061} 2062 2063/* Handle CSI SGR. */ 2064static void 2065input_csi_dispatch_sgr(struct input_ctx *ictx) 2066{ 2067 struct grid_cell *gc = &ictx->cell.cell; 2068 u_int i; 2069 int n; 2070 2071 if (ictx->param_list_len == 0) { 2072 memcpy(gc, &grid_default_cell, sizeof *gc); 2073 return; 2074 } 2075 2076 for (i = 0; i < ictx->param_list_len; i++) { 2077 if (ictx->param_list[i].type == INPUT_STRING) { 2078 input_csi_dispatch_sgr_colon(ictx, i); 2079 continue; 2080 } 2081 n = input_get(ictx, i, 0, 0); 2082 if (n == -1) 2083 continue; 2084 2085 if (n == 38 || n == 48 || n == 58) { 2086 i++; 2087 switch (input_get(ictx, i, 0, -1)) { 2088 case 2: 2089 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2090 break; 2091 case 5: 2092 input_csi_dispatch_sgr_256(ictx, n, &i); 2093 break; 2094 } 2095 continue; 2096 } 2097 2098 switch (n) { 2099 case 0: 2100 memcpy(gc, &grid_default_cell, sizeof *gc); 2101 break; 2102 case 1: 2103 gc->attr |= GRID_ATTR_BRIGHT; 2104 break; 2105 case 2: 2106 gc->attr |= GRID_ATTR_DIM; 2107 break; 2108 case 3: 2109 gc->attr |= GRID_ATTR_ITALICS; 2110 break; 2111 case 4: 2112 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2113 gc->attr |= GRID_ATTR_UNDERSCORE; 2114 break; 2115 case 5: 2116 case 6: 2117 gc->attr |= GRID_ATTR_BLINK; 2118 break; 2119 case 7: 2120 gc->attr |= GRID_ATTR_REVERSE; 2121 break; 2122 case 8: 2123 gc->attr |= GRID_ATTR_HIDDEN; 2124 break; 2125 case 9: 2126 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2127 break; 2128 case 21: 2129 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2130 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2131 break; 2132 case 22: 2133 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2134 break; 2135 case 23: 2136 gc->attr &= ~GRID_ATTR_ITALICS; 2137 break; 2138 case 24: 2139 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2140 break; 2141 case 25: 2142 gc->attr &= ~GRID_ATTR_BLINK; 2143 break; 2144 case 27: 2145 gc->attr &= ~GRID_ATTR_REVERSE; 2146 break; 2147 case 28: 2148 gc->attr &= ~GRID_ATTR_HIDDEN; 2149 break; 2150 case 29: 2151 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2152 break; 2153 case 30: 2154 case 31: 2155 case 32: 2156 case 33: 2157 case 34: 2158 case 35: 2159 case 36: 2160 case 37: 2161 gc->fg = n - 30; 2162 break; 2163 case 39: 2164 gc->fg = 8; 2165 break; 2166 case 40: 2167 case 41: 2168 case 42: 2169 case 43: 2170 case 44: 2171 case 45: 2172 case 46: 2173 case 47: 2174 gc->bg = n - 40; 2175 break; 2176 case 49: 2177 gc->bg = 8; 2178 break; 2179 case 53: 2180 gc->attr |= GRID_ATTR_OVERLINE; 2181 break; 2182 case 55: 2183 gc->attr &= ~GRID_ATTR_OVERLINE; 2184 break; 2185 case 59: 2186 gc->us = 0; 2187 break; 2188 case 90: 2189 case 91: 2190 case 92: 2191 case 93: 2192 case 94: 2193 case 95: 2194 case 96: 2195 case 97: 2196 gc->fg = n; 2197 break; 2198 case 100: 2199 case 101: 2200 case 102: 2201 case 103: 2202 case 104: 2203 case 105: 2204 case 106: 2205 case 107: 2206 gc->bg = n - 10; 2207 break; 2208 } 2209 } 2210} 2211 2212/* End of input with BEL. */ 2213static int 2214input_end_bel(struct input_ctx *ictx) 2215{ 2216 log_debug("%s", __func__); 2217 2218 ictx->input_end = INPUT_END_BEL; 2219 2220 return (0); 2221} 2222 2223/* DCS string started. */ 2224static void 2225input_enter_dcs(struct input_ctx *ictx) 2226{ 2227 log_debug("%s", __func__); 2228 2229 input_clear(ictx); 2230 input_start_timer(ictx); 2231 ictx->last = -1; 2232} 2233 2234/* DCS terminator (ST) received. */ 2235static int 2236input_dcs_dispatch(struct input_ctx *ictx) 2237{ 2238 struct screen_write_ctx *sctx = &ictx->ctx; 2239 u_char *buf = ictx->input_buf; 2240 size_t len = ictx->input_len; 2241 const char prefix[] = "tmux;"; 2242 const u_int prefixlen = (sizeof prefix) - 1; 2243 2244 if (ictx->flags & INPUT_DISCARD) 2245 return (0); 2246 2247 log_debug("%s: \"%s\"", __func__, buf); 2248 2249 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2250 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen); 2251 2252 return (0); 2253} 2254 2255/* OSC string started. */ 2256static void 2257input_enter_osc(struct input_ctx *ictx) 2258{ 2259 log_debug("%s", __func__); 2260 2261 input_clear(ictx); 2262 input_start_timer(ictx); 2263 ictx->last = -1; 2264} 2265 2266/* OSC terminator (ST) received. */ 2267static void 2268input_exit_osc(struct input_ctx *ictx) 2269{ 2270 struct screen_write_ctx *sctx = &ictx->ctx; 2271 struct window_pane *wp = ictx->wp; 2272 u_char *p = ictx->input_buf; 2273 u_int option; 2274 2275 if (ictx->flags & INPUT_DISCARD) 2276 return; 2277 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2278 return; 2279 2280 log_debug("%s: \"%s\" (end %s)", __func__, p, 2281 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2282 2283 option = 0; 2284 while (*p >= '0' && *p <= '9') 2285 option = option * 10 + *p++ - '0'; 2286 if (*p == ';') 2287 p++; 2288 2289 switch (option) { 2290 case 0: 2291 case 2: 2292 if (screen_set_title(sctx->s, p) && wp != NULL) { 2293 notify_pane("pane-title-changed", wp); 2294 server_redraw_window_borders(wp->window); 2295 server_status_window(wp->window); 2296 } 2297 break; 2298 case 4: 2299 input_osc_4(ictx, p); 2300 break; 2301 case 7: 2302 if (utf8_isvalid(p)) { 2303 screen_set_path(sctx->s, p); 2304 if (wp != NULL) { 2305 server_redraw_window_borders(wp->window); 2306 server_status_window(wp->window); 2307 } 2308 } 2309 break; 2310 case 10: 2311 input_osc_10(ictx, p); 2312 break; 2313 case 11: 2314 input_osc_11(ictx, p); 2315 break; 2316 case 12: 2317 input_osc_12(ictx, p); 2318 break; 2319 case 52: 2320 input_osc_52(ictx, p); 2321 break; 2322 case 104: 2323 input_osc_104(ictx, p); 2324 break; 2325 case 110: 2326 input_osc_110(ictx, p); 2327 break; 2328 case 111: 2329 input_osc_111(ictx, p); 2330 break; 2331 case 112: 2332 input_osc_112(ictx, p); 2333 break; 2334 default: 2335 log_debug("%s: unknown '%u'", __func__, option); 2336 break; 2337 } 2338} 2339 2340/* APC string started. */ 2341static void 2342input_enter_apc(struct input_ctx *ictx) 2343{ 2344 log_debug("%s", __func__); 2345 2346 input_clear(ictx); 2347 input_start_timer(ictx); 2348 ictx->last = -1; 2349} 2350 2351/* APC terminator (ST) received. */ 2352static void 2353input_exit_apc(struct input_ctx *ictx) 2354{ 2355 struct screen_write_ctx *sctx = &ictx->ctx; 2356 struct window_pane *wp = ictx->wp; 2357 2358 if (ictx->flags & INPUT_DISCARD) 2359 return; 2360 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2361 2362 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) { 2363 notify_pane("pane-title-changed", wp); 2364 server_redraw_window_borders(wp->window); 2365 server_status_window(wp->window); 2366 } 2367} 2368 2369/* Rename string started. */ 2370static void 2371input_enter_rename(struct input_ctx *ictx) 2372{ 2373 log_debug("%s", __func__); 2374 2375 input_clear(ictx); 2376 input_start_timer(ictx); 2377 ictx->last = -1; 2378} 2379 2380/* Rename terminator (ST) received. */ 2381static void 2382input_exit_rename(struct input_ctx *ictx) 2383{ 2384 struct window_pane *wp = ictx->wp; 2385 struct window *w; 2386 struct options_entry *o; 2387 2388 if (wp == NULL) 2389 return; 2390 if (ictx->flags & INPUT_DISCARD) 2391 return; 2392 if (!options_get_number(ictx->wp->options, "allow-rename")) 2393 return; 2394 log_debug("%s: \"%s\"", __func__, ictx->input_buf); 2395 2396 if (!utf8_isvalid(ictx->input_buf)) 2397 return; 2398 w = wp->window; 2399 2400 if (ictx->input_len == 0) { 2401 o = options_get_only(w->options, "automatic-rename"); 2402 if (o != NULL) 2403 options_remove_or_default(o, -1, NULL); 2404 if (!options_get_number(w->options, "automatic-rename")) 2405 window_set_name(w, ""); 2406 } else { 2407 options_set_number(w->options, "automatic-rename", 0); 2408 window_set_name(w, ictx->input_buf); 2409 } 2410 server_redraw_window_borders(w); 2411 server_status_window(w); 2412} 2413 2414/* Open UTF-8 character. */ 2415static int 2416input_top_bit_set(struct input_ctx *ictx) 2417{ 2418 struct screen_write_ctx *sctx = &ictx->ctx; 2419 struct utf8_data *ud = &ictx->utf8data; 2420 2421 ictx->last = -1; 2422 2423 if (!ictx->utf8started) { 2424 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2425 return (0); 2426 ictx->utf8started = 1; 2427 return (0); 2428 } 2429 2430 switch (utf8_append(ud, ictx->ch)) { 2431 case UTF8_MORE: 2432 return (0); 2433 case UTF8_ERROR: 2434 ictx->utf8started = 0; 2435 return (0); 2436 case UTF8_DONE: 2437 break; 2438 } 2439 ictx->utf8started = 0; 2440 2441 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2442 (int)ud->size, ud->data, ud->width); 2443 2444 utf8_copy(&ictx->cell.cell.data, ud); 2445 screen_write_collect_add(sctx, &ictx->cell.cell); 2446 2447 return (0); 2448} 2449 2450/* Parse colour from OSC. */ 2451static int 2452input_osc_parse_colour(const char *p) 2453{ 2454 double c, m, y, k = 0; 2455 u_int r, g, b; 2456 size_t len = strlen(p); 2457 int colour = -1; 2458 char *copy; 2459 2460 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) || 2461 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) || 2462 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3) 2463 colour = colour_join_rgb(r, g, b); 2464 else if ((len == 18 && 2465 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) || 2466 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3)) 2467 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8); 2468 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 || 2469 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) && 2470 c >= 0 && c <= 1 && m >= 0 && m <= 1 && 2471 y >= 0 && y <= 1 && k >= 0 && k <= 1) { 2472 colour = colour_join_rgb( 2473 (1 - c) * (1 - k) * 255, 2474 (1 - m) * (1 - k) * 255, 2475 (1 - y) * (1 - k) * 255); 2476 } else { 2477 while (len != 0 && *p == ' ') { 2478 p++; 2479 len--; 2480 } 2481 while (len != 0 && p[len - 1] == ' ') 2482 len--; 2483 copy = xstrndup(p, len); 2484 colour = colour_byname(copy); 2485 free(copy); 2486 } 2487 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour)); 2488 return (colour); 2489} 2490 2491/* Reply to a colour request. */ 2492static void 2493input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2494{ 2495 u_char r, g, b; 2496 const char *end; 2497 2498 if (c != -1) 2499 c = colour_force_rgb(c); 2500 if (c == -1) 2501 return; 2502 colour_split_rgb(c, &r, &g, &b); 2503 2504 if (ictx->input_end == INPUT_END_BEL) 2505 end = "\007"; 2506 else 2507 end = "\033\\"; 2508 input_reply(ictx, "\033]%u;rgb:%02hhx/%02hhx/%02hhx%s", n, r, g, b, end); 2509} 2510 2511/* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2512static void 2513input_osc_4(struct input_ctx *ictx, const char *p) 2514{ 2515 char *copy, *s, *next = NULL; 2516 long idx; 2517 int c, bad = 0, redraw = 0; 2518 2519 copy = s = xstrdup(p); 2520 while (s != NULL && *s != '\0') { 2521 idx = strtol(s, &next, 10); 2522 if (*next++ != ';') { 2523 bad = 1; 2524 break; 2525 } 2526 if (idx < 0 || idx >= 256) { 2527 bad = 1; 2528 break; 2529 } 2530 2531 s = strsep(&next, ";"); 2532 if ((c = input_osc_parse_colour(s)) == -1) { 2533 s = next; 2534 continue; 2535 } 2536 if (colour_palette_set(ictx->palette, idx, c)) 2537 redraw = 1; 2538 s = next; 2539 } 2540 if (bad) 2541 log_debug("bad OSC 4: %s", p); 2542 if (redraw) 2543 screen_write_fullredraw(&ictx->ctx); 2544 free(copy); 2545} 2546 2547/* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2548static void 2549input_osc_10(struct input_ctx *ictx, const char *p) 2550{ 2551 struct window_pane *wp = ictx->wp; 2552 struct grid_cell defaults; 2553 int c; 2554 2555 if (strcmp(p, "?") == 0) { 2556 if (wp != NULL) { 2557 tty_default_colours(&defaults, wp); 2558 input_osc_colour_reply(ictx, 10, defaults.fg); 2559 } 2560 return; 2561 } 2562 2563 if ((c = input_osc_parse_colour(p)) == -1) { 2564 log_debug("bad OSC 10: %s", p); 2565 return; 2566 } 2567 if (ictx->palette != NULL) { 2568 ictx->palette->fg = c; 2569 if (wp != NULL) 2570 wp->flags |= PANE_STYLECHANGED; 2571 screen_write_fullredraw(&ictx->ctx); 2572 } 2573} 2574 2575/* Handle the OSC 110 sequence for resetting foreground colour. */ 2576static void 2577input_osc_110(struct input_ctx *ictx, const char *p) 2578{ 2579 struct window_pane *wp = ictx->wp; 2580 2581 if (*p != '\0') 2582 return; 2583 if (ictx->palette != NULL) { 2584 ictx->palette->fg = 8; 2585 if (wp != NULL) 2586 wp->flags |= PANE_STYLECHANGED; 2587 screen_write_fullredraw(&ictx->ctx); 2588 } 2589} 2590 2591/* Handle the OSC 11 sequence for setting and querying background colour. */ 2592static void 2593input_osc_11(struct input_ctx *ictx, const char *p) 2594{ 2595 struct window_pane *wp = ictx->wp; 2596 struct grid_cell defaults; 2597 int c; 2598 2599 if (strcmp(p, "?") == 0) { 2600 if (wp != NULL) { 2601 tty_default_colours(&defaults, wp); 2602 input_osc_colour_reply(ictx, 11, defaults.bg); 2603 } 2604 return; 2605 } 2606 2607 if ((c = input_osc_parse_colour(p)) == -1) { 2608 log_debug("bad OSC 11: %s", p); 2609 return; 2610 } 2611 if (ictx->palette != NULL) { 2612 ictx->palette->bg = c; 2613 if (wp != NULL) 2614 wp->flags |= PANE_STYLECHANGED; 2615 screen_write_fullredraw(&ictx->ctx); 2616 } 2617} 2618 2619/* Handle the OSC 111 sequence for resetting background colour. */ 2620static void 2621input_osc_111(struct input_ctx *ictx, const char *p) 2622{ 2623 struct window_pane *wp = ictx->wp; 2624 2625 if (*p != '\0') 2626 return; 2627 if (ictx->palette != NULL) { 2628 ictx->palette->bg = 8; 2629 if (wp != NULL) 2630 wp->flags |= PANE_STYLECHANGED; 2631 screen_write_fullredraw(&ictx->ctx); 2632 } 2633} 2634 2635/* Handle the OSC 12 sequence for setting and querying cursor colour. */ 2636static void 2637input_osc_12(struct input_ctx *ictx, const char *p) 2638{ 2639 struct window_pane *wp = ictx->wp; 2640 int c; 2641 2642 if (strcmp(p, "?") == 0) { 2643 if (wp != NULL) { 2644 c = ictx->ctx.s->ccolour; 2645 if (c == -1) 2646 c = ictx->ctx.s->default_ccolour; 2647 input_osc_colour_reply(ictx, 12, c); 2648 } 2649 return; 2650 } 2651 2652 if ((c = input_osc_parse_colour(p)) == -1) { 2653 log_debug("bad OSC 12: %s", p); 2654 return; 2655 } 2656 screen_set_cursor_colour(ictx->ctx.s, c); 2657} 2658 2659/* Handle the OSC 112 sequence for resetting cursor colour. */ 2660static void 2661input_osc_112(struct input_ctx *ictx, const char *p) 2662{ 2663 if (*p == '\0') /* no arguments allowed */ 2664 screen_set_cursor_colour(ictx->ctx.s, -1); 2665} 2666 2667 2668/* Handle the OSC 52 sequence for setting the clipboard. */ 2669static void 2670input_osc_52(struct input_ctx *ictx, const char *p) 2671{ 2672 struct window_pane *wp = ictx->wp; 2673 char *end; 2674 const char *buf; 2675 size_t len; 2676 u_char *out; 2677 int outlen, state; 2678 struct screen_write_ctx ctx; 2679 struct paste_buffer *pb; 2680 2681 if (wp == NULL) 2682 return; 2683 state = options_get_number(global_options, "set-clipboard"); 2684 if (state != 2) 2685 return; 2686 2687 if ((end = strchr(p, ';')) == NULL) 2688 return; 2689 end++; 2690 if (*end == '\0') 2691 return; 2692 log_debug("%s: %s", __func__, end); 2693 2694 if (strcmp(end, "?") == 0) { 2695 if ((pb = paste_get_top(NULL)) != NULL) { 2696 buf = paste_buffer_data(pb, &len); 2697 outlen = 4 * ((len + 2) / 3) + 1; 2698 out = xmalloc(outlen); 2699 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2700 free(out); 2701 return; 2702 } 2703 } else { 2704 outlen = 0; 2705 out = NULL; 2706 } 2707 bufferevent_write(ictx->event, "\033]52;;", 6); 2708 if (outlen != 0) 2709 bufferevent_write(ictx->event, out, outlen); 2710 if (ictx->input_end == INPUT_END_BEL) 2711 bufferevent_write(ictx->event, "\007", 1); 2712 else 2713 bufferevent_write(ictx->event, "\033\\", 2); 2714 free(out); 2715 return; 2716 } 2717 2718 len = (strlen(end) / 4) * 3; 2719 if (len == 0) 2720 return; 2721 2722 out = xmalloc(len); 2723 if ((outlen = b64_pton(end, out, len)) == -1) { 2724 free(out); 2725 return; 2726 } 2727 2728 screen_write_start_pane(&ctx, wp, NULL); 2729 screen_write_setselection(&ctx, out, outlen); 2730 screen_write_stop(&ctx); 2731 notify_pane("pane-set-clipboard", wp); 2732 2733 paste_add(NULL, out, outlen); 2734} 2735 2736/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2737static void 2738input_osc_104(struct input_ctx *ictx, const char *p) 2739{ 2740 char *copy, *s; 2741 long idx; 2742 int bad = 0, redraw = 0; 2743 2744 if (*p == '\0') { 2745 colour_palette_clear(ictx->palette); 2746 screen_write_fullredraw(&ictx->ctx); 2747 return; 2748 } 2749 2750 copy = s = xstrdup(p); 2751 while (*s != '\0') { 2752 idx = strtol(s, &s, 10); 2753 if (*s != '\0' && *s != ';') { 2754 bad = 1; 2755 break; 2756 } 2757 if (idx < 0 || idx >= 256) { 2758 bad = 1; 2759 break; 2760 } 2761 if (colour_palette_set(ictx->palette, idx, -1)) 2762 redraw = 1; 2763 if (*s == ';') 2764 s++; 2765 } 2766 if (bad) 2767 log_debug("bad OSC 104: %s", p); 2768 if (redraw) 2769 screen_write_fullredraw(&ictx->ctx); 2770 free(copy); 2771} 2772