1 /* $OpenBSD$ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 21 #include <netinet/in.h> 22 23 #include <ctype.h> 24 #include <resolv.h> 25 #include <stdlib.h> 26 #include <string.h> 27 #include <time.h> 28 29 #include "tmux.h" 30 31 /* 32 * Based on the description by Paul Williams at: 33 * 34 * https://vt100.net/emu/dec_ansi_parser 35 * 36 * With the following changes: 37 * 38 * - 7-bit only. 39 * 40 * - Support for UTF-8. 41 * 42 * - OSC (but not APC) may be terminated by \007 as well as ST. 43 * 44 * - A state for APC similar to OSC. Some terminals appear to use this to set 45 * the title. 46 * 47 * - A state for the screen \033k...\033\\ sequence to rename a window. This is 48 * pretty stupid but not supporting it is more trouble than it is worth. 49 * 50 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to 51 * be passed to the underlying terminals. 52 */ 53 54 /* Input parser cell. */ 55 struct input_cell { 56 struct grid_cell cell; 57 int set; 58 int g0set; /* 1 if ACS */ 59 int g1set; /* 1 if ACS */ 60 }; 61 62 /* Input parser argument. */ 63 struct input_param { 64 enum { 65 INPUT_MISSING, 66 INPUT_NUMBER, 67 INPUT_STRING 68 } type; 69 union { 70 int num; 71 char *str; 72 }; 73 }; 74 75 /* Input parser context. */ 76 struct input_ctx { 77 struct window_pane *wp; 78 struct bufferevent *event; 79 struct screen_write_ctx ctx; 80 struct colour_palette *palette; 81 82 struct input_cell cell; 83 84 struct input_cell old_cell; 85 u_int old_cx; 86 u_int old_cy; 87 int old_mode; 88 89 u_char interm_buf[4]; 90 size_t interm_len; 91 92 u_char param_buf[64]; 93 size_t param_len; 94 95 #define INPUT_BUF_START 32 96 #define INPUT_BUF_LIMIT 1048576 97 u_char *input_buf; 98 size_t input_len; 99 size_t input_space; 100 enum { 101 INPUT_END_ST, 102 INPUT_END_BEL 103 } input_end; 104 105 struct input_param param_list[24]; 106 u_int param_list_len; 107 108 struct utf8_data utf8data; 109 int utf8started; 110 111 int ch; 112 int last; 113 114 int flags; 115 #define INPUT_DISCARD 0x1 116 117 const struct input_state *state; 118 119 struct event timer; 120 121 /* 122 * All input received since we were last in the ground state. Sent to 123 * control clients on connection. 124 */ 125 struct evbuffer *since_ground; 126 }; 127 128 /* Helper functions. */ 129 struct input_transition; 130 static int input_split(struct input_ctx *); 131 static int input_get(struct input_ctx *, u_int, int, int); 132 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...); 133 static void input_set_state(struct input_ctx *, 134 const struct input_transition *); 135 static void input_reset_cell(struct input_ctx *); 136 137 static void input_osc_4(struct input_ctx *, const char *); 138 static void input_osc_10(struct input_ctx *, const char *); 139 static void input_osc_11(struct input_ctx *, const char *); 140 static void input_osc_12(struct input_ctx *, const char *); 141 static void input_osc_52(struct input_ctx *, const char *); 142 static void input_osc_104(struct input_ctx *, const char *); 143 static void input_osc_110(struct input_ctx *, const char *); 144 static void input_osc_111(struct input_ctx *, const char *); 145 static void input_osc_112(struct input_ctx *, const char *); 146 147 /* Transition entry/exit handlers. */ 148 static void input_clear(struct input_ctx *); 149 static void input_ground(struct input_ctx *); 150 static void input_enter_dcs(struct input_ctx *); 151 static void input_enter_osc(struct input_ctx *); 152 static void input_exit_osc(struct input_ctx *); 153 static void input_enter_apc(struct input_ctx *); 154 static void input_exit_apc(struct input_ctx *); 155 static void input_enter_rename(struct input_ctx *); 156 static void input_exit_rename(struct input_ctx *); 157 158 /* Input state handlers. */ 159 static int input_print(struct input_ctx *); 160 static int input_intermediate(struct input_ctx *); 161 static int input_parameter(struct input_ctx *); 162 static int input_input(struct input_ctx *); 163 static int input_c0_dispatch(struct input_ctx *); 164 static int input_esc_dispatch(struct input_ctx *); 165 static int input_csi_dispatch(struct input_ctx *); 166 static void input_csi_dispatch_rm(struct input_ctx *); 167 static void input_csi_dispatch_rm_private(struct input_ctx *); 168 static void input_csi_dispatch_sm(struct input_ctx *); 169 static void input_csi_dispatch_sm_private(struct input_ctx *); 170 static void input_csi_dispatch_winops(struct input_ctx *); 171 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *); 172 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *); 173 static void input_csi_dispatch_sgr(struct input_ctx *); 174 static int input_dcs_dispatch(struct input_ctx *); 175 static int input_top_bit_set(struct input_ctx *); 176 static int input_end_bel(struct input_ctx *); 177 178 /* Command table comparison function. */ 179 static int input_table_compare(const void *, const void *); 180 181 /* Command table entry. */ 182 struct input_table_entry { 183 int ch; 184 const char *interm; 185 int type; 186 }; 187 188 /* Escape commands. */ 189 enum 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. */ 208 static 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. */ 227 enum 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. */ 268 static 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. */ 311 struct 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. */ 320 struct 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. */ 334 static const struct input_transition input_state_ground_table[]; 335 static const struct input_transition input_state_esc_enter_table[]; 336 static const struct input_transition input_state_esc_intermediate_table[]; 337 static const struct input_transition input_state_csi_enter_table[]; 338 static const struct input_transition input_state_csi_parameter_table[]; 339 static const struct input_transition input_state_csi_intermediate_table[]; 340 static const struct input_transition input_state_csi_ignore_table[]; 341 static const struct input_transition input_state_dcs_enter_table[]; 342 static const struct input_transition input_state_dcs_parameter_table[]; 343 static const struct input_transition input_state_dcs_intermediate_table[]; 344 static const struct input_transition input_state_dcs_handler_table[]; 345 static const struct input_transition input_state_dcs_escape_table[]; 346 static const struct input_transition input_state_dcs_ignore_table[]; 347 static const struct input_transition input_state_osc_string_table[]; 348 static const struct input_transition input_state_apc_string_table[]; 349 static const struct input_transition input_state_rename_string_table[]; 350 static const struct input_transition input_state_consume_st_table[]; 351 352 /* ground state definition. */ 353 static 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. */ 360 static 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. */ 367 static 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. */ 374 static 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. */ 381 static 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. */ 388 static 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. */ 395 static 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. */ 402 static 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. */ 409 static 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. */ 416 static 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. */ 423 static 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. */ 430 static 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. */ 437 static 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. */ 444 static 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. */ 451 static 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. */ 458 static 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. */ 465 static 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. */ 472 static 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. */ 486 static 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. */ 513 static 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. */ 527 static 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. */ 545 static 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. */ 563 static 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. */ 578 static 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. */ 592 static 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. */ 610 static 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. */ 628 static 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. */ 643 static 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. */ 654 static 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. */ 665 static 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. */ 677 static 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. */ 691 static 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. */ 703 static 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. */ 715 static 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. */ 727 static int 728 input_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((const char *)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 */ 742 static void 743 input_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. */ 752 static void 753 input_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. */ 762 static void 763 input_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. */ 775 static void 776 input_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. */ 788 static void 789 input_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. */ 802 struct input_ctx * 803 input_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. */ 827 void 828 input_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. */ 846 void 847 input_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. */ 872 struct evbuffer * 873 input_pending(struct input_ctx *ictx) 874 { 875 return (ictx->since_ground); 876 } 877 878 /* Change input state. */ 879 static void 880 input_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. */ 890 static void 891 input_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. */ 949 void 950 input_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. */ 961 void 962 input_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. */ 987 void 988 input_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). */ 1002 static int 1003 input_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 = (char *)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. */ 1054 static int 1055 input_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. */ 1074 static void 1075 input_reply(struct input_ctx *ictx, const char *fmt, ...) 1076 { 1077 struct bufferevent *bev = ictx->event; 1078 va_list ap; 1079 char *reply; 1080 1081 if (bev == NULL) 1082 return; 1083 1084 va_start(ap, fmt); 1085 xvasprintf(&reply, fmt, ap); 1086 va_end(ap); 1087 1088 bufferevent_write(bev, reply, strlen(reply)); 1089 free(reply); 1090 } 1091 1092 /* Clear saved state. */ 1093 static void 1094 input_clear(struct input_ctx *ictx) 1095 { 1096 event_del(&ictx->timer); 1097 1098 *ictx->interm_buf = '\0'; 1099 ictx->interm_len = 0; 1100 1101 *ictx->param_buf = '\0'; 1102 ictx->param_len = 0; 1103 1104 *ictx->input_buf = '\0'; 1105 ictx->input_len = 0; 1106 1107 ictx->input_end = INPUT_END_ST; 1108 1109 ictx->flags &= ~INPUT_DISCARD; 1110 } 1111 1112 /* Reset for ground state. */ 1113 static void 1114 input_ground(struct input_ctx *ictx) 1115 { 1116 event_del(&ictx->timer); 1117 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)); 1118 1119 if (ictx->input_space > INPUT_BUF_START) { 1120 ictx->input_space = INPUT_BUF_START; 1121 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START); 1122 } 1123 } 1124 1125 /* Output this character to the screen. */ 1126 static int 1127 input_print(struct input_ctx *ictx) 1128 { 1129 struct screen_write_ctx *sctx = &ictx->ctx; 1130 int set; 1131 1132 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1133 1134 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set; 1135 if (set == 1) 1136 ictx->cell.cell.attr |= GRID_ATTR_CHARSET; 1137 else 1138 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1139 1140 utf8_set(&ictx->cell.cell.data, ictx->ch); 1141 screen_write_collect_add(sctx, &ictx->cell.cell); 1142 ictx->last = ictx->ch; 1143 1144 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET; 1145 1146 return (0); 1147 } 1148 1149 /* Collect intermediate string. */ 1150 static int 1151 input_intermediate(struct input_ctx *ictx) 1152 { 1153 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1) 1154 ictx->flags |= INPUT_DISCARD; 1155 else { 1156 ictx->interm_buf[ictx->interm_len++] = ictx->ch; 1157 ictx->interm_buf[ictx->interm_len] = '\0'; 1158 } 1159 1160 return (0); 1161 } 1162 1163 /* Collect parameter string. */ 1164 static int 1165 input_parameter(struct input_ctx *ictx) 1166 { 1167 if (ictx->param_len == (sizeof ictx->param_buf) - 1) 1168 ictx->flags |= INPUT_DISCARD; 1169 else { 1170 ictx->param_buf[ictx->param_len++] = ictx->ch; 1171 ictx->param_buf[ictx->param_len] = '\0'; 1172 } 1173 1174 return (0); 1175 } 1176 1177 /* Collect input string. */ 1178 static int 1179 input_input(struct input_ctx *ictx) 1180 { 1181 size_t available; 1182 1183 available = ictx->input_space; 1184 while (ictx->input_len + 1 >= available) { 1185 available *= 2; 1186 if (available > INPUT_BUF_LIMIT) { 1187 ictx->flags |= INPUT_DISCARD; 1188 return (0); 1189 } 1190 ictx->input_buf = xrealloc(ictx->input_buf, available); 1191 ictx->input_space = available; 1192 } 1193 ictx->input_buf[ictx->input_len++] = ictx->ch; 1194 ictx->input_buf[ictx->input_len] = '\0'; 1195 1196 return (0); 1197 } 1198 1199 /* Execute C0 control sequence. */ 1200 static int 1201 input_c0_dispatch(struct input_ctx *ictx) 1202 { 1203 struct screen_write_ctx *sctx = &ictx->ctx; 1204 struct window_pane *wp = ictx->wp; 1205 struct screen *s = sctx->s; 1206 1207 ictx->utf8started = 0; /* can't be valid UTF-8 */ 1208 1209 log_debug("%s: '%c'", __func__, ictx->ch); 1210 1211 switch (ictx->ch) { 1212 case '\000': /* NUL */ 1213 break; 1214 case '\007': /* BEL */ 1215 if (wp != NULL) 1216 alerts_queue(wp->window, WINDOW_BELL); 1217 break; 1218 case '\010': /* BS */ 1219 screen_write_backspace(sctx); 1220 break; 1221 case '\011': /* HT */ 1222 /* Don't tab beyond the end of the line. */ 1223 if (s->cx >= screen_size_x(s) - 1) 1224 break; 1225 1226 /* Find the next tab point, or use the last column if none. */ 1227 do { 1228 s->cx++; 1229 if (bit_test(s->tabs, s->cx)) 1230 break; 1231 } while (s->cx < screen_size_x(s) - 1); 1232 break; 1233 case '\012': /* LF */ 1234 case '\013': /* VT */ 1235 case '\014': /* FF */ 1236 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1237 if (s->mode & MODE_CRLF) 1238 screen_write_carriagereturn(sctx); 1239 break; 1240 case '\015': /* CR */ 1241 screen_write_carriagereturn(sctx); 1242 break; 1243 case '\016': /* SO */ 1244 ictx->cell.set = 1; 1245 break; 1246 case '\017': /* SI */ 1247 ictx->cell.set = 0; 1248 break; 1249 default: 1250 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1251 break; 1252 } 1253 1254 ictx->last = -1; 1255 return (0); 1256 } 1257 1258 /* Execute escape sequence. */ 1259 static int 1260 input_esc_dispatch(struct input_ctx *ictx) 1261 { 1262 struct screen_write_ctx *sctx = &ictx->ctx; 1263 struct screen *s = sctx->s; 1264 struct input_table_entry *entry; 1265 1266 if (ictx->flags & INPUT_DISCARD) 1267 return (0); 1268 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf); 1269 1270 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table), 1271 sizeof input_esc_table[0], input_table_compare); 1272 if (entry == NULL) { 1273 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1274 return (0); 1275 } 1276 1277 switch (entry->type) { 1278 case INPUT_ESC_RIS: 1279 colour_palette_clear(ictx->palette); 1280 input_reset_cell(ictx); 1281 screen_write_reset(sctx); 1282 screen_write_fullredraw(sctx); 1283 break; 1284 case INPUT_ESC_IND: 1285 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1286 break; 1287 case INPUT_ESC_NEL: 1288 screen_write_carriagereturn(sctx); 1289 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg); 1290 break; 1291 case INPUT_ESC_HTS: 1292 if (s->cx < screen_size_x(s)) 1293 bit_set(s->tabs, s->cx); 1294 break; 1295 case INPUT_ESC_RI: 1296 screen_write_reverseindex(sctx, ictx->cell.cell.bg); 1297 break; 1298 case INPUT_ESC_DECKPAM: 1299 screen_write_mode_set(sctx, MODE_KKEYPAD); 1300 break; 1301 case INPUT_ESC_DECKPNM: 1302 screen_write_mode_clear(sctx, MODE_KKEYPAD); 1303 break; 1304 case INPUT_ESC_DECSC: 1305 input_save_state(ictx); 1306 break; 1307 case INPUT_ESC_DECRC: 1308 input_restore_state(ictx); 1309 break; 1310 case INPUT_ESC_DECALN: 1311 screen_write_alignmenttest(sctx); 1312 break; 1313 case INPUT_ESC_SCSG0_ON: 1314 ictx->cell.g0set = 1; 1315 break; 1316 case INPUT_ESC_SCSG0_OFF: 1317 ictx->cell.g0set = 0; 1318 break; 1319 case INPUT_ESC_SCSG1_ON: 1320 ictx->cell.g1set = 1; 1321 break; 1322 case INPUT_ESC_SCSG1_OFF: 1323 ictx->cell.g1set = 0; 1324 break; 1325 case INPUT_ESC_ST: 1326 /* ST terminates OSC but the state transition already did it. */ 1327 break; 1328 } 1329 1330 ictx->last = -1; 1331 return (0); 1332 } 1333 1334 /* Execute control sequence. */ 1335 static int 1336 input_csi_dispatch(struct input_ctx *ictx) 1337 { 1338 struct screen_write_ctx *sctx = &ictx->ctx; 1339 struct screen *s = sctx->s; 1340 struct input_table_entry *entry; 1341 int i, n, m; 1342 u_int cx, bg = ictx->cell.cell.bg; 1343 1344 if (ictx->flags & INPUT_DISCARD) 1345 return (0); 1346 1347 log_debug("%s: '%c' \"%s\" \"%s\"", 1348 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf); 1349 1350 if (input_split(ictx) != 0) 1351 return (0); 1352 1353 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table), 1354 sizeof input_csi_table[0], input_table_compare); 1355 if (entry == NULL) { 1356 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1357 return (0); 1358 } 1359 1360 switch (entry->type) { 1361 case INPUT_CSI_CBT: 1362 /* Find the previous tab point, n times. */ 1363 cx = s->cx; 1364 if (cx > screen_size_x(s) - 1) 1365 cx = screen_size_x(s) - 1; 1366 n = input_get(ictx, 0, 1, 1); 1367 if (n == -1) 1368 break; 1369 while (cx > 0 && n-- > 0) { 1370 do 1371 cx--; 1372 while (cx > 0 && !bit_test(s->tabs, cx)); 1373 } 1374 s->cx = cx; 1375 break; 1376 case INPUT_CSI_CUB: 1377 n = input_get(ictx, 0, 1, 1); 1378 if (n != -1) 1379 screen_write_cursorleft(sctx, n); 1380 break; 1381 case INPUT_CSI_CUD: 1382 n = input_get(ictx, 0, 1, 1); 1383 if (n != -1) 1384 screen_write_cursordown(sctx, n); 1385 break; 1386 case INPUT_CSI_CUF: 1387 n = input_get(ictx, 0, 1, 1); 1388 if (n != -1) 1389 screen_write_cursorright(sctx, n); 1390 break; 1391 case INPUT_CSI_CUP: 1392 n = input_get(ictx, 0, 1, 1); 1393 m = input_get(ictx, 1, 1, 1); 1394 if (n != -1 && m != -1) 1395 screen_write_cursormove(sctx, m - 1, n - 1, 1); 1396 break; 1397 case INPUT_CSI_MODSET: 1398 n = input_get(ictx, 0, 0, 0); 1399 m = input_get(ictx, 1, 0, 0); 1400 if (options_get_number(global_options, "extended-keys") == 2) 1401 break; 1402 if (n == 0 || (n == 4 && m == 0)) 1403 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1404 else if (n == 4 && (m == 1 || m == 2)) 1405 screen_write_mode_set(sctx, MODE_KEXTENDED); 1406 break; 1407 case INPUT_CSI_MODOFF: 1408 n = input_get(ictx, 0, 0, 0); 1409 if (n == 4) 1410 screen_write_mode_clear(sctx, MODE_KEXTENDED); 1411 break; 1412 case INPUT_CSI_WINOPS: 1413 input_csi_dispatch_winops(ictx); 1414 break; 1415 case INPUT_CSI_CUU: 1416 n = input_get(ictx, 0, 1, 1); 1417 if (n != -1) 1418 screen_write_cursorup(sctx, n); 1419 break; 1420 case INPUT_CSI_CNL: 1421 n = input_get(ictx, 0, 1, 1); 1422 if (n != -1) { 1423 screen_write_carriagereturn(sctx); 1424 screen_write_cursordown(sctx, n); 1425 } 1426 break; 1427 case INPUT_CSI_CPL: 1428 n = input_get(ictx, 0, 1, 1); 1429 if (n != -1) { 1430 screen_write_carriagereturn(sctx); 1431 screen_write_cursorup(sctx, n); 1432 } 1433 break; 1434 case INPUT_CSI_DA: 1435 switch (input_get(ictx, 0, 0, 0)) { 1436 case -1: 1437 break; 1438 case 0: 1439 input_reply(ictx, "\033[?1;2c"); 1440 break; 1441 default: 1442 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1443 break; 1444 } 1445 break; 1446 case INPUT_CSI_DA_TWO: 1447 switch (input_get(ictx, 0, 0, 0)) { 1448 case -1: 1449 break; 1450 case 0: 1451 input_reply(ictx, "\033[>84;0;0c"); 1452 break; 1453 default: 1454 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1455 break; 1456 } 1457 break; 1458 case INPUT_CSI_ECH: 1459 n = input_get(ictx, 0, 1, 1); 1460 if (n != -1) 1461 screen_write_clearcharacter(sctx, n, bg); 1462 break; 1463 case INPUT_CSI_DCH: 1464 n = input_get(ictx, 0, 1, 1); 1465 if (n != -1) 1466 screen_write_deletecharacter(sctx, n, bg); 1467 break; 1468 case INPUT_CSI_DECSTBM: 1469 n = input_get(ictx, 0, 1, 1); 1470 m = input_get(ictx, 1, 1, screen_size_y(s)); 1471 if (n != -1 && m != -1) 1472 screen_write_scrollregion(sctx, n - 1, m - 1); 1473 break; 1474 case INPUT_CSI_DL: 1475 n = input_get(ictx, 0, 1, 1); 1476 if (n != -1) 1477 screen_write_deleteline(sctx, n, bg); 1478 break; 1479 case INPUT_CSI_DSR: 1480 switch (input_get(ictx, 0, 0, 0)) { 1481 case -1: 1482 break; 1483 case 5: 1484 input_reply(ictx, "\033[0n"); 1485 break; 1486 case 6: 1487 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1); 1488 break; 1489 default: 1490 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1491 break; 1492 } 1493 break; 1494 case INPUT_CSI_ED: 1495 switch (input_get(ictx, 0, 0, 0)) { 1496 case -1: 1497 break; 1498 case 0: 1499 screen_write_clearendofscreen(sctx, bg); 1500 break; 1501 case 1: 1502 screen_write_clearstartofscreen(sctx, bg); 1503 break; 1504 case 2: 1505 screen_write_clearscreen(sctx, bg); 1506 break; 1507 case 3: 1508 if (input_get(ictx, 1, 0, 0) == 0) { 1509 /* 1510 * Linux console extension to clear history 1511 * (for example before locking the screen). 1512 */ 1513 screen_write_clearhistory(sctx); 1514 } 1515 break; 1516 default: 1517 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1518 break; 1519 } 1520 break; 1521 case INPUT_CSI_EL: 1522 switch (input_get(ictx, 0, 0, 0)) { 1523 case -1: 1524 break; 1525 case 0: 1526 screen_write_clearendofline(sctx, bg); 1527 break; 1528 case 1: 1529 screen_write_clearstartofline(sctx, bg); 1530 break; 1531 case 2: 1532 screen_write_clearline(sctx, bg); 1533 break; 1534 default: 1535 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1536 break; 1537 } 1538 break; 1539 case INPUT_CSI_HPA: 1540 n = input_get(ictx, 0, 1, 1); 1541 if (n != -1) 1542 screen_write_cursormove(sctx, n - 1, -1, 1); 1543 break; 1544 case INPUT_CSI_ICH: 1545 n = input_get(ictx, 0, 1, 1); 1546 if (n != -1) 1547 screen_write_insertcharacter(sctx, n, bg); 1548 break; 1549 case INPUT_CSI_IL: 1550 n = input_get(ictx, 0, 1, 1); 1551 if (n != -1) 1552 screen_write_insertline(sctx, n, bg); 1553 break; 1554 case INPUT_CSI_REP: 1555 n = input_get(ictx, 0, 1, 1); 1556 if (n == -1) 1557 break; 1558 1559 m = screen_size_x(s) - s->cx; 1560 if (n > m) 1561 n = m; 1562 1563 if (ictx->last == -1) 1564 break; 1565 ictx->ch = ictx->last; 1566 1567 for (i = 0; i < n; i++) 1568 input_print(ictx); 1569 break; 1570 case INPUT_CSI_RCP: 1571 input_restore_state(ictx); 1572 break; 1573 case INPUT_CSI_RM: 1574 input_csi_dispatch_rm(ictx); 1575 break; 1576 case INPUT_CSI_RM_PRIVATE: 1577 input_csi_dispatch_rm_private(ictx); 1578 break; 1579 case INPUT_CSI_SCP: 1580 input_save_state(ictx); 1581 break; 1582 case INPUT_CSI_SGR: 1583 input_csi_dispatch_sgr(ictx); 1584 break; 1585 case INPUT_CSI_SM: 1586 input_csi_dispatch_sm(ictx); 1587 break; 1588 case INPUT_CSI_SM_PRIVATE: 1589 input_csi_dispatch_sm_private(ictx); 1590 break; 1591 case INPUT_CSI_SU: 1592 n = input_get(ictx, 0, 1, 1); 1593 if (n != -1) 1594 screen_write_scrollup(sctx, n, bg); 1595 break; 1596 case INPUT_CSI_SD: 1597 n = input_get(ictx, 0, 1, 1); 1598 if (n != -1) 1599 screen_write_scrolldown(sctx, n, bg); 1600 break; 1601 case INPUT_CSI_TBC: 1602 switch (input_get(ictx, 0, 0, 0)) { 1603 case -1: 1604 break; 1605 case 0: 1606 if (s->cx < screen_size_x(s)) 1607 bit_clear(s->tabs, s->cx); 1608 break; 1609 case 3: 1610 bit_nclear(s->tabs, 0, screen_size_x(s) - 1); 1611 break; 1612 default: 1613 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1614 break; 1615 } 1616 break; 1617 case INPUT_CSI_VPA: 1618 n = input_get(ictx, 0, 1, 1); 1619 if (n != -1) 1620 screen_write_cursormove(sctx, -1, n - 1, 1); 1621 break; 1622 case INPUT_CSI_DECSCUSR: 1623 n = input_get(ictx, 0, 0, 0); 1624 if (n != -1) 1625 screen_set_cursor_style(n, &s->cstyle, &s->mode); 1626 break; 1627 case INPUT_CSI_XDA: 1628 n = input_get(ictx, 0, 0, 0); 1629 if (n == 0) 1630 input_reply(ictx, "\033P>|tmux %s\033\\", getversion()); 1631 break; 1632 1633 } 1634 1635 ictx->last = -1; 1636 return (0); 1637 } 1638 1639 /* Handle CSI RM. */ 1640 static void 1641 input_csi_dispatch_rm(struct input_ctx *ictx) 1642 { 1643 struct screen_write_ctx *sctx = &ictx->ctx; 1644 u_int i; 1645 1646 for (i = 0; i < ictx->param_list_len; i++) { 1647 switch (input_get(ictx, i, 0, -1)) { 1648 case -1: 1649 break; 1650 case 4: /* IRM */ 1651 screen_write_mode_clear(sctx, MODE_INSERT); 1652 break; 1653 case 34: 1654 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE); 1655 break; 1656 default: 1657 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1658 break; 1659 } 1660 } 1661 } 1662 1663 /* Handle CSI private RM. */ 1664 static void 1665 input_csi_dispatch_rm_private(struct input_ctx *ictx) 1666 { 1667 struct screen_write_ctx *sctx = &ictx->ctx; 1668 struct grid_cell *gc = &ictx->cell.cell; 1669 u_int i; 1670 1671 for (i = 0; i < ictx->param_list_len; i++) { 1672 switch (input_get(ictx, i, 0, -1)) { 1673 case -1: 1674 break; 1675 case 1: /* DECCKM */ 1676 screen_write_mode_clear(sctx, MODE_KCURSOR); 1677 break; 1678 case 3: /* DECCOLM */ 1679 screen_write_cursormove(sctx, 0, 0, 1); 1680 screen_write_clearscreen(sctx, gc->bg); 1681 break; 1682 case 6: /* DECOM */ 1683 screen_write_mode_clear(sctx, MODE_ORIGIN); 1684 screen_write_cursormove(sctx, 0, 0, 1); 1685 break; 1686 case 7: /* DECAWM */ 1687 screen_write_mode_clear(sctx, MODE_WRAP); 1688 break; 1689 case 12: 1690 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING); 1691 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1692 break; 1693 case 25: /* TCEM */ 1694 screen_write_mode_clear(sctx, MODE_CURSOR); 1695 break; 1696 case 1000: 1697 case 1001: 1698 case 1002: 1699 case 1003: 1700 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1701 break; 1702 case 1004: 1703 screen_write_mode_clear(sctx, MODE_FOCUSON); 1704 break; 1705 case 1005: 1706 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8); 1707 break; 1708 case 1006: 1709 screen_write_mode_clear(sctx, MODE_MOUSE_SGR); 1710 break; 1711 case 47: 1712 case 1047: 1713 screen_write_alternateoff(sctx, gc, 0); 1714 break; 1715 case 1049: 1716 screen_write_alternateoff(sctx, gc, 1); 1717 break; 1718 case 2004: 1719 screen_write_mode_clear(sctx, MODE_BRACKETPASTE); 1720 break; 1721 default: 1722 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1723 break; 1724 } 1725 } 1726 } 1727 1728 /* Handle CSI SM. */ 1729 static void 1730 input_csi_dispatch_sm(struct input_ctx *ictx) 1731 { 1732 struct screen_write_ctx *sctx = &ictx->ctx; 1733 u_int i; 1734 1735 for (i = 0; i < ictx->param_list_len; i++) { 1736 switch (input_get(ictx, i, 0, -1)) { 1737 case -1: 1738 break; 1739 case 4: /* IRM */ 1740 screen_write_mode_set(sctx, MODE_INSERT); 1741 break; 1742 case 34: 1743 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE); 1744 break; 1745 default: 1746 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1747 break; 1748 } 1749 } 1750 } 1751 1752 /* Handle CSI private SM. */ 1753 static void 1754 input_csi_dispatch_sm_private(struct input_ctx *ictx) 1755 { 1756 struct screen_write_ctx *sctx = &ictx->ctx; 1757 struct window_pane *wp = ictx->wp; 1758 struct grid_cell *gc = &ictx->cell.cell; 1759 u_int i; 1760 1761 for (i = 0; i < ictx->param_list_len; i++) { 1762 switch (input_get(ictx, i, 0, -1)) { 1763 case -1: 1764 break; 1765 case 1: /* DECCKM */ 1766 screen_write_mode_set(sctx, MODE_KCURSOR); 1767 break; 1768 case 3: /* DECCOLM */ 1769 screen_write_cursormove(sctx, 0, 0, 1); 1770 screen_write_clearscreen(sctx, ictx->cell.cell.bg); 1771 break; 1772 case 6: /* DECOM */ 1773 screen_write_mode_set(sctx, MODE_ORIGIN); 1774 screen_write_cursormove(sctx, 0, 0, 1); 1775 break; 1776 case 7: /* DECAWM */ 1777 screen_write_mode_set(sctx, MODE_WRAP); 1778 break; 1779 case 12: 1780 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING); 1781 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET); 1782 break; 1783 case 25: /* TCEM */ 1784 screen_write_mode_set(sctx, MODE_CURSOR); 1785 break; 1786 case 1000: 1787 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1788 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD); 1789 break; 1790 case 1002: 1791 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1792 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON); 1793 break; 1794 case 1003: 1795 screen_write_mode_clear(sctx, ALL_MOUSE_MODES); 1796 screen_write_mode_set(sctx, MODE_MOUSE_ALL); 1797 break; 1798 case 1004: 1799 if (sctx->s->mode & MODE_FOCUSON) 1800 break; 1801 screen_write_mode_set(sctx, MODE_FOCUSON); 1802 if (wp == NULL) 1803 break; 1804 if (!options_get_number(global_options, "focus-events")) 1805 break; 1806 if (wp->flags & PANE_FOCUSED) 1807 bufferevent_write(wp->event, "\033[I", 3); 1808 else 1809 bufferevent_write(wp->event, "\033[O", 3); 1810 break; 1811 case 1005: 1812 screen_write_mode_set(sctx, MODE_MOUSE_UTF8); 1813 break; 1814 case 1006: 1815 screen_write_mode_set(sctx, MODE_MOUSE_SGR); 1816 break; 1817 case 47: 1818 case 1047: 1819 screen_write_alternateon(sctx, gc, 0); 1820 break; 1821 case 1049: 1822 screen_write_alternateon(sctx, gc, 1); 1823 break; 1824 case 2004: 1825 screen_write_mode_set(sctx, MODE_BRACKETPASTE); 1826 break; 1827 default: 1828 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1829 break; 1830 } 1831 } 1832 } 1833 1834 /* Handle CSI window operations. */ 1835 static void 1836 input_csi_dispatch_winops(struct input_ctx *ictx) 1837 { 1838 struct screen_write_ctx *sctx = &ictx->ctx; 1839 struct screen *s = sctx->s; 1840 struct window_pane *wp = ictx->wp; 1841 u_int x = screen_size_x(s), y = screen_size_y(s); 1842 int n, m; 1843 1844 m = 0; 1845 while ((n = input_get(ictx, m, 0, -1)) != -1) { 1846 switch (n) { 1847 case 1: 1848 case 2: 1849 case 5: 1850 case 6: 1851 case 7: 1852 case 11: 1853 case 13: 1854 case 14: 1855 case 19: 1856 case 20: 1857 case 21: 1858 case 24: 1859 break; 1860 case 3: 1861 case 4: 1862 case 8: 1863 m++; 1864 if (input_get(ictx, m, 0, -1) == -1) 1865 return; 1866 /* FALLTHROUGH */ 1867 case 9: 1868 case 10: 1869 m++; 1870 if (input_get(ictx, m, 0, -1) == -1) 1871 return; 1872 break; 1873 case 22: 1874 m++; 1875 switch (input_get(ictx, m, 0, -1)) { 1876 case -1: 1877 return; 1878 case 0: 1879 case 2: 1880 screen_push_title(sctx->s); 1881 break; 1882 } 1883 break; 1884 case 23: 1885 m++; 1886 switch (input_get(ictx, m, 0, -1)) { 1887 case -1: 1888 return; 1889 case 0: 1890 case 2: 1891 screen_pop_title(sctx->s); 1892 if (wp == NULL) 1893 break; 1894 notify_pane("pane-title-changed", wp); 1895 server_redraw_window_borders(wp->window); 1896 server_status_window(wp->window); 1897 break; 1898 } 1899 break; 1900 case 18: 1901 input_reply(ictx, "\033[8;%u;%ut", x, y); 1902 break; 1903 default: 1904 log_debug("%s: unknown '%c'", __func__, ictx->ch); 1905 break; 1906 } 1907 m++; 1908 } 1909 } 1910 1911 /* Helper for 256 colour SGR. */ 1912 static int 1913 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c) 1914 { 1915 struct grid_cell *gc = &ictx->cell.cell; 1916 1917 if (c == -1 || c > 255) { 1918 if (fgbg == 38) 1919 gc->fg = 8; 1920 else if (fgbg == 48) 1921 gc->bg = 8; 1922 } else { 1923 if (fgbg == 38) 1924 gc->fg = c | COLOUR_FLAG_256; 1925 else if (fgbg == 48) 1926 gc->bg = c | COLOUR_FLAG_256; 1927 else if (fgbg == 58) 1928 gc->us = c | COLOUR_FLAG_256; 1929 } 1930 return (1); 1931 } 1932 1933 /* Handle CSI SGR for 256 colours. */ 1934 static void 1935 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i) 1936 { 1937 int c; 1938 1939 c = input_get(ictx, (*i) + 1, 0, -1); 1940 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c)) 1941 (*i)++; 1942 } 1943 1944 /* Helper for RGB colour SGR. */ 1945 static int 1946 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g, 1947 int b) 1948 { 1949 struct grid_cell *gc = &ictx->cell.cell; 1950 1951 if (r == -1 || r > 255) 1952 return (0); 1953 if (g == -1 || g > 255) 1954 return (0); 1955 if (b == -1 || b > 255) 1956 return (0); 1957 1958 if (fgbg == 38) 1959 gc->fg = colour_join_rgb(r, g, b); 1960 else if (fgbg == 48) 1961 gc->bg = colour_join_rgb(r, g, b); 1962 else if (fgbg == 58) 1963 gc->us = colour_join_rgb(r, g, b); 1964 return (1); 1965 } 1966 1967 /* Handle CSI SGR for RGB colours. */ 1968 static void 1969 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i) 1970 { 1971 int r, g, b; 1972 1973 r = input_get(ictx, (*i) + 1, 0, -1); 1974 g = input_get(ictx, (*i) + 2, 0, -1); 1975 b = input_get(ictx, (*i) + 3, 0, -1); 1976 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b)) 1977 (*i) += 3; 1978 } 1979 1980 /* Handle CSI SGR with a ISO parameter. */ 1981 static void 1982 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i) 1983 { 1984 struct grid_cell *gc = &ictx->cell.cell; 1985 char *s = ictx->param_list[i].str, *copy, *ptr, *out; 1986 int p[8]; 1987 u_int n; 1988 const char *errstr; 1989 1990 for (n = 0; n < nitems(p); n++) 1991 p[n] = -1; 1992 n = 0; 1993 1994 ptr = copy = xstrdup(s); 1995 while ((out = strsep(&ptr, ":")) != NULL) { 1996 if (*out != '\0') { 1997 p[n++] = strtonum(out, 0, INT_MAX, &errstr); 1998 if (errstr != NULL || n == nitems(p)) { 1999 free(copy); 2000 return; 2001 } 2002 } else { 2003 n++; 2004 if (n == nitems(p)) { 2005 free(copy); 2006 return; 2007 } 2008 } 2009 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]); 2010 } 2011 free(copy); 2012 2013 if (n == 0) 2014 return; 2015 if (p[0] == 4) { 2016 if (n != 2) 2017 return; 2018 switch (p[1]) { 2019 case 0: 2020 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2021 break; 2022 case 1: 2023 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2024 gc->attr |= GRID_ATTR_UNDERSCORE; 2025 break; 2026 case 2: 2027 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2028 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2029 break; 2030 case 3: 2031 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2032 gc->attr |= GRID_ATTR_UNDERSCORE_3; 2033 break; 2034 case 4: 2035 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2036 gc->attr |= GRID_ATTR_UNDERSCORE_4; 2037 break; 2038 case 5: 2039 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2040 gc->attr |= GRID_ATTR_UNDERSCORE_5; 2041 break; 2042 } 2043 return; 2044 } 2045 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58)) 2046 return; 2047 switch (p[1]) { 2048 case 2: 2049 if (n < 3) 2050 break; 2051 if (n == 5) 2052 i = 2; 2053 else 2054 i = 3; 2055 if (n < i + 3) 2056 break; 2057 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1], 2058 p[i + 2]); 2059 break; 2060 case 5: 2061 if (n < 3) 2062 break; 2063 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]); 2064 break; 2065 } 2066 } 2067 2068 /* Handle CSI SGR. */ 2069 static void 2070 input_csi_dispatch_sgr(struct input_ctx *ictx) 2071 { 2072 struct grid_cell *gc = &ictx->cell.cell; 2073 u_int i; 2074 int n; 2075 2076 if (ictx->param_list_len == 0) { 2077 memcpy(gc, &grid_default_cell, sizeof *gc); 2078 return; 2079 } 2080 2081 for (i = 0; i < ictx->param_list_len; i++) { 2082 if (ictx->param_list[i].type == INPUT_STRING) { 2083 input_csi_dispatch_sgr_colon(ictx, i); 2084 continue; 2085 } 2086 n = input_get(ictx, i, 0, 0); 2087 if (n == -1) 2088 continue; 2089 2090 if (n == 38 || n == 48 || n == 58) { 2091 i++; 2092 switch (input_get(ictx, i, 0, -1)) { 2093 case 2: 2094 input_csi_dispatch_sgr_rgb(ictx, n, &i); 2095 break; 2096 case 5: 2097 input_csi_dispatch_sgr_256(ictx, n, &i); 2098 break; 2099 } 2100 continue; 2101 } 2102 2103 switch (n) { 2104 case 0: 2105 memcpy(gc, &grid_default_cell, sizeof *gc); 2106 break; 2107 case 1: 2108 gc->attr |= GRID_ATTR_BRIGHT; 2109 break; 2110 case 2: 2111 gc->attr |= GRID_ATTR_DIM; 2112 break; 2113 case 3: 2114 gc->attr |= GRID_ATTR_ITALICS; 2115 break; 2116 case 4: 2117 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2118 gc->attr |= GRID_ATTR_UNDERSCORE; 2119 break; 2120 case 5: 2121 case 6: 2122 gc->attr |= GRID_ATTR_BLINK; 2123 break; 2124 case 7: 2125 gc->attr |= GRID_ATTR_REVERSE; 2126 break; 2127 case 8: 2128 gc->attr |= GRID_ATTR_HIDDEN; 2129 break; 2130 case 9: 2131 gc->attr |= GRID_ATTR_STRIKETHROUGH; 2132 break; 2133 case 21: 2134 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2135 gc->attr |= GRID_ATTR_UNDERSCORE_2; 2136 break; 2137 case 22: 2138 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM); 2139 break; 2140 case 23: 2141 gc->attr &= ~GRID_ATTR_ITALICS; 2142 break; 2143 case 24: 2144 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE; 2145 break; 2146 case 25: 2147 gc->attr &= ~GRID_ATTR_BLINK; 2148 break; 2149 case 27: 2150 gc->attr &= ~GRID_ATTR_REVERSE; 2151 break; 2152 case 28: 2153 gc->attr &= ~GRID_ATTR_HIDDEN; 2154 break; 2155 case 29: 2156 gc->attr &= ~GRID_ATTR_STRIKETHROUGH; 2157 break; 2158 case 30: 2159 case 31: 2160 case 32: 2161 case 33: 2162 case 34: 2163 case 35: 2164 case 36: 2165 case 37: 2166 gc->fg = n - 30; 2167 break; 2168 case 39: 2169 gc->fg = 8; 2170 break; 2171 case 40: 2172 case 41: 2173 case 42: 2174 case 43: 2175 case 44: 2176 case 45: 2177 case 46: 2178 case 47: 2179 gc->bg = n - 40; 2180 break; 2181 case 49: 2182 gc->bg = 8; 2183 break; 2184 case 53: 2185 gc->attr |= GRID_ATTR_OVERLINE; 2186 break; 2187 case 55: 2188 gc->attr &= ~GRID_ATTR_OVERLINE; 2189 break; 2190 case 59: 2191 gc->us = 0; 2192 break; 2193 case 90: 2194 case 91: 2195 case 92: 2196 case 93: 2197 case 94: 2198 case 95: 2199 case 96: 2200 case 97: 2201 gc->fg = n; 2202 break; 2203 case 100: 2204 case 101: 2205 case 102: 2206 case 103: 2207 case 104: 2208 case 105: 2209 case 106: 2210 case 107: 2211 gc->bg = n - 10; 2212 break; 2213 } 2214 } 2215 } 2216 2217 /* End of input with BEL. */ 2218 static int 2219 input_end_bel(struct input_ctx *ictx) 2220 { 2221 log_debug("%s", __func__); 2222 2223 ictx->input_end = INPUT_END_BEL; 2224 2225 return (0); 2226 } 2227 2228 /* DCS string started. */ 2229 static void 2230 input_enter_dcs(struct input_ctx *ictx) 2231 { 2232 log_debug("%s", __func__); 2233 2234 input_clear(ictx); 2235 input_start_timer(ictx); 2236 ictx->last = -1; 2237 } 2238 2239 /* DCS terminator (ST) received. */ 2240 static int 2241 input_dcs_dispatch(struct input_ctx *ictx) 2242 { 2243 struct window_pane *wp = ictx->wp; 2244 struct screen_write_ctx *sctx = &ictx->ctx; 2245 char *buf = (char *)ictx->input_buf; 2246 size_t len = ictx->input_len; 2247 const char prefix[] = "tmux;"; 2248 const u_int prefixlen = (sizeof prefix) - 1; 2249 2250 if (wp == NULL) 2251 return (0); 2252 if (ictx->flags & INPUT_DISCARD) 2253 return (0); 2254 if (!options_get_number(ictx->wp->options, "allow-passthrough")) 2255 return (0); 2256 log_debug("%s: \"%s\"", __func__, buf); 2257 2258 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) 2259 screen_write_rawstring(sctx, (u_char *)buf + prefixlen, len - prefixlen); 2260 2261 return (0); 2262 } 2263 2264 /* OSC string started. */ 2265 static void 2266 input_enter_osc(struct input_ctx *ictx) 2267 { 2268 log_debug("%s", __func__); 2269 2270 input_clear(ictx); 2271 input_start_timer(ictx); 2272 ictx->last = -1; 2273 } 2274 2275 /* OSC terminator (ST) received. */ 2276 static void 2277 input_exit_osc(struct input_ctx *ictx) 2278 { 2279 struct screen_write_ctx *sctx = &ictx->ctx; 2280 struct window_pane *wp = ictx->wp; 2281 char *p = (char *)ictx->input_buf; 2282 u_int option; 2283 2284 if (ictx->flags & INPUT_DISCARD) 2285 return; 2286 if (ictx->input_len < 1 || *p < '0' || *p > '9') 2287 return; 2288 2289 log_debug("%s: \"%s\" (end %s)", __func__, p, 2290 ictx->input_end == INPUT_END_ST ? "ST" : "BEL"); 2291 2292 option = 0; 2293 while (*p >= '0' && *p <= '9') 2294 option = option * 10 + *p++ - '0'; 2295 if (*p == ';') 2296 p++; 2297 2298 switch (option) { 2299 case 0: 2300 case 2: 2301 if (screen_set_title(sctx->s, p) && wp != NULL) { 2302 notify_pane("pane-title-changed", wp); 2303 server_redraw_window_borders(wp->window); 2304 server_status_window(wp->window); 2305 } 2306 break; 2307 case 4: 2308 input_osc_4(ictx, p); 2309 break; 2310 case 7: 2311 if (utf8_isvalid(p)) { 2312 screen_set_path(sctx->s, p); 2313 if (wp != NULL) { 2314 server_redraw_window_borders(wp->window); 2315 server_status_window(wp->window); 2316 } 2317 } 2318 break; 2319 case 10: 2320 input_osc_10(ictx, p); 2321 break; 2322 case 11: 2323 input_osc_11(ictx, p); 2324 break; 2325 case 12: 2326 input_osc_12(ictx, p); 2327 break; 2328 case 52: 2329 input_osc_52(ictx, p); 2330 break; 2331 case 104: 2332 input_osc_104(ictx, p); 2333 break; 2334 case 110: 2335 input_osc_110(ictx, p); 2336 break; 2337 case 111: 2338 input_osc_111(ictx, p); 2339 break; 2340 case 112: 2341 input_osc_112(ictx, p); 2342 break; 2343 default: 2344 log_debug("%s: unknown '%u'", __func__, option); 2345 break; 2346 } 2347 } 2348 2349 /* APC string started. */ 2350 static void 2351 input_enter_apc(struct input_ctx *ictx) 2352 { 2353 log_debug("%s", __func__); 2354 2355 input_clear(ictx); 2356 input_start_timer(ictx); 2357 ictx->last = -1; 2358 } 2359 2360 /* APC terminator (ST) received. */ 2361 static void 2362 input_exit_apc(struct input_ctx *ictx) 2363 { 2364 struct screen_write_ctx *sctx = &ictx->ctx; 2365 struct window_pane *wp = ictx->wp; 2366 char *p = (char *)ictx->input_buf; 2367 2368 if (ictx->flags & INPUT_DISCARD) 2369 return; 2370 log_debug("%s: \"%s\"", __func__, p); 2371 2372 if (screen_set_title(sctx->s, p) && wp != NULL) { 2373 notify_pane("pane-title-changed", wp); 2374 server_redraw_window_borders(wp->window); 2375 server_status_window(wp->window); 2376 } 2377 } 2378 2379 /* Rename string started. */ 2380 static void 2381 input_enter_rename(struct input_ctx *ictx) 2382 { 2383 log_debug("%s", __func__); 2384 2385 input_clear(ictx); 2386 input_start_timer(ictx); 2387 ictx->last = -1; 2388 } 2389 2390 /* Rename terminator (ST) received. */ 2391 static void 2392 input_exit_rename(struct input_ctx *ictx) 2393 { 2394 struct window_pane *wp = ictx->wp; 2395 struct window *w; 2396 struct options_entry *o; 2397 char *p = (char *)ictx->input_buf; 2398 2399 if (wp == NULL) 2400 return; 2401 if (ictx->flags & INPUT_DISCARD) 2402 return; 2403 if (!options_get_number(ictx->wp->options, "allow-rename")) 2404 return; 2405 log_debug("%s: \"%s\"", __func__, p); 2406 2407 if (!utf8_isvalid(p)) 2408 return; 2409 w = wp->window; 2410 2411 if (ictx->input_len == 0) { 2412 o = options_get_only(w->options, "automatic-rename"); 2413 if (o != NULL) 2414 options_remove_or_default(o, -1, NULL); 2415 if (!options_get_number(w->options, "automatic-rename")) 2416 window_set_name(w, ""); 2417 } else { 2418 options_set_number(w->options, "automatic-rename", 0); 2419 window_set_name(w, ictx->input_buf); 2420 } 2421 server_redraw_window_borders(w); 2422 server_status_window(w); 2423 } 2424 2425 /* Open UTF-8 character. */ 2426 static int 2427 input_top_bit_set(struct input_ctx *ictx) 2428 { 2429 struct screen_write_ctx *sctx = &ictx->ctx; 2430 struct utf8_data *ud = &ictx->utf8data; 2431 2432 ictx->last = -1; 2433 2434 if (!ictx->utf8started) { 2435 if (utf8_open(ud, ictx->ch) != UTF8_MORE) 2436 return (0); 2437 ictx->utf8started = 1; 2438 return (0); 2439 } 2440 2441 switch (utf8_append(ud, ictx->ch)) { 2442 case UTF8_MORE: 2443 return (0); 2444 case UTF8_ERROR: 2445 ictx->utf8started = 0; 2446 return (0); 2447 case UTF8_DONE: 2448 break; 2449 } 2450 ictx->utf8started = 0; 2451 2452 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size, 2453 (int)ud->size, ud->data, ud->width); 2454 2455 utf8_copy(&ictx->cell.cell.data, ud); 2456 screen_write_collect_add(sctx, &ictx->cell.cell); 2457 2458 return (0); 2459 } 2460 2461 /* Parse colour from OSC. */ 2462 static int 2463 input_osc_parse_colour(const char *p) 2464 { 2465 double c, m, y, k = 0; 2466 u_int r, g, b; 2467 size_t len = strlen(p); 2468 int colour = -1; 2469 char *copy; 2470 2471 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) || 2472 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) || 2473 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3) 2474 colour = colour_join_rgb(r, g, b); 2475 else if ((len == 18 && 2476 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) || 2477 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3)) 2478 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8); 2479 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 || 2480 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) && 2481 c >= 0 && c <= 1 && m >= 0 && m <= 1 && 2482 y >= 0 && y <= 1 && k >= 0 && k <= 1) { 2483 colour = colour_join_rgb( 2484 (1 - c) * (1 - k) * 255, 2485 (1 - m) * (1 - k) * 255, 2486 (1 - y) * (1 - k) * 255); 2487 } else { 2488 while (len != 0 && *p == ' ') { 2489 p++; 2490 len--; 2491 } 2492 while (len != 0 && p[len - 1] == ' ') 2493 len--; 2494 copy = xstrndup(p, len); 2495 colour = colour_byname(copy); 2496 free(copy); 2497 } 2498 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour)); 2499 return (colour); 2500 } 2501 2502 /* Reply to a colour request. */ 2503 static void 2504 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c) 2505 { 2506 u_char r, g, b; 2507 const char *end; 2508 2509 if (c != -1) 2510 c = colour_force_rgb(c); 2511 if (c == -1) 2512 return; 2513 colour_split_rgb(c, &r, &g, &b); 2514 2515 if (ictx->input_end == INPUT_END_BEL) 2516 end = "\007"; 2517 else 2518 end = "\033\\"; 2519 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s", 2520 n, r, r, g, g, b, b, end); 2521 } 2522 2523 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */ 2524 static void 2525 input_osc_4(struct input_ctx *ictx, const char *p) 2526 { 2527 char *copy, *s, *next = NULL; 2528 long idx; 2529 int c, bad = 0, redraw = 0; 2530 2531 copy = s = xstrdup(p); 2532 while (s != NULL && *s != '\0') { 2533 idx = strtol(s, &next, 10); 2534 if (*next++ != ';') { 2535 bad = 1; 2536 break; 2537 } 2538 if (idx < 0 || idx >= 256) { 2539 bad = 1; 2540 break; 2541 } 2542 2543 s = strsep(&next, ";"); 2544 if (strcmp(s, "?") == 0) { 2545 c = colour_palette_get(ictx->palette, idx); 2546 if (c != -1) 2547 input_osc_colour_reply(ictx, 4, c); 2548 continue; 2549 } 2550 if ((c = input_osc_parse_colour(s)) == -1) { 2551 s = next; 2552 continue; 2553 } 2554 if (colour_palette_set(ictx->palette, idx, c)) 2555 redraw = 1; 2556 s = next; 2557 } 2558 if (bad) 2559 log_debug("bad OSC 4: %s", p); 2560 if (redraw) 2561 screen_write_fullredraw(&ictx->ctx); 2562 free(copy); 2563 } 2564 2565 /* Handle the OSC 10 sequence for setting and querying foreground colour. */ 2566 static void 2567 input_osc_10(struct input_ctx *ictx, const char *p) 2568 { 2569 struct window_pane *wp = ictx->wp; 2570 struct grid_cell defaults; 2571 int c; 2572 2573 if (strcmp(p, "?") == 0) { 2574 if (wp != NULL) { 2575 tty_default_colours(&defaults, wp); 2576 input_osc_colour_reply(ictx, 10, defaults.fg); 2577 } 2578 return; 2579 } 2580 2581 if ((c = input_osc_parse_colour(p)) == -1) { 2582 log_debug("bad OSC 10: %s", p); 2583 return; 2584 } 2585 if (ictx->palette != NULL) { 2586 ictx->palette->fg = c; 2587 if (wp != NULL) 2588 wp->flags |= PANE_STYLECHANGED; 2589 screen_write_fullredraw(&ictx->ctx); 2590 } 2591 } 2592 2593 /* Handle the OSC 110 sequence for resetting foreground colour. */ 2594 static void 2595 input_osc_110(struct input_ctx *ictx, const char *p) 2596 { 2597 struct window_pane *wp = ictx->wp; 2598 2599 if (*p != '\0') 2600 return; 2601 if (ictx->palette != NULL) { 2602 ictx->palette->fg = 8; 2603 if (wp != NULL) 2604 wp->flags |= PANE_STYLECHANGED; 2605 screen_write_fullredraw(&ictx->ctx); 2606 } 2607 } 2608 2609 /* Handle the OSC 11 sequence for setting and querying background colour. */ 2610 static void 2611 input_osc_11(struct input_ctx *ictx, const char *p) 2612 { 2613 struct window_pane *wp = ictx->wp; 2614 struct grid_cell defaults; 2615 int c; 2616 2617 if (strcmp(p, "?") == 0) { 2618 if (wp != NULL) { 2619 tty_default_colours(&defaults, wp); 2620 input_osc_colour_reply(ictx, 11, defaults.bg); 2621 } 2622 return; 2623 } 2624 2625 if ((c = input_osc_parse_colour(p)) == -1) { 2626 log_debug("bad OSC 11: %s", p); 2627 return; 2628 } 2629 if (ictx->palette != NULL) { 2630 ictx->palette->bg = c; 2631 if (wp != NULL) 2632 wp->flags |= PANE_STYLECHANGED; 2633 screen_write_fullredraw(&ictx->ctx); 2634 } 2635 } 2636 2637 /* Handle the OSC 111 sequence for resetting background colour. */ 2638 static void 2639 input_osc_111(struct input_ctx *ictx, const char *p) 2640 { 2641 struct window_pane *wp = ictx->wp; 2642 2643 if (*p != '\0') 2644 return; 2645 if (ictx->palette != NULL) { 2646 ictx->palette->bg = 8; 2647 if (wp != NULL) 2648 wp->flags |= PANE_STYLECHANGED; 2649 screen_write_fullredraw(&ictx->ctx); 2650 } 2651 } 2652 2653 /* Handle the OSC 12 sequence for setting and querying cursor colour. */ 2654 static void 2655 input_osc_12(struct input_ctx *ictx, const char *p) 2656 { 2657 struct window_pane *wp = ictx->wp; 2658 int c; 2659 2660 if (strcmp(p, "?") == 0) { 2661 if (wp != NULL) { 2662 c = ictx->ctx.s->ccolour; 2663 if (c == -1) 2664 c = ictx->ctx.s->default_ccolour; 2665 input_osc_colour_reply(ictx, 12, c); 2666 } 2667 return; 2668 } 2669 2670 if ((c = input_osc_parse_colour(p)) == -1) { 2671 log_debug("bad OSC 12: %s", p); 2672 return; 2673 } 2674 screen_set_cursor_colour(ictx->ctx.s, c); 2675 } 2676 2677 /* Handle the OSC 112 sequence for resetting cursor colour. */ 2678 static void 2679 input_osc_112(struct input_ctx *ictx, const char *p) 2680 { 2681 if (*p == '\0') /* no arguments allowed */ 2682 screen_set_cursor_colour(ictx->ctx.s, -1); 2683 } 2684 2685 2686 /* Handle the OSC 52 sequence for setting the clipboard. */ 2687 static void 2688 input_osc_52(struct input_ctx *ictx, const char *p) 2689 { 2690 struct window_pane *wp = ictx->wp; 2691 char *end; 2692 const char *buf = NULL; 2693 size_t len = 0; 2694 u_char *out; 2695 int outlen, state; 2696 struct screen_write_ctx ctx; 2697 struct paste_buffer *pb; 2698 2699 if (wp == NULL) 2700 return; 2701 state = options_get_number(global_options, "set-clipboard"); 2702 if (state != 2) 2703 return; 2704 2705 if ((end = strchr(p, ';')) == NULL) 2706 return; 2707 end++; 2708 if (*end == '\0') 2709 return; 2710 log_debug("%s: %s", __func__, end); 2711 2712 if (strcmp(end, "?") == 0) { 2713 if ((pb = paste_get_top(NULL)) != NULL) 2714 buf = paste_buffer_data(pb, &len); 2715 if (ictx->input_end == INPUT_END_BEL) 2716 input_reply_clipboard(ictx->event, buf, len, "\007"); 2717 else 2718 input_reply_clipboard(ictx->event, buf, len, "\033\\"); 2719 return; 2720 } 2721 2722 len = (strlen(end) / 4) * 3; 2723 if (len == 0) 2724 return; 2725 2726 out = xmalloc(len); 2727 if ((outlen = b64_pton(end, out, len)) == -1) { 2728 free(out); 2729 return; 2730 } 2731 2732 screen_write_start_pane(&ctx, wp, NULL); 2733 screen_write_setselection(&ctx, out, outlen); 2734 screen_write_stop(&ctx); 2735 notify_pane("pane-set-clipboard", wp); 2736 2737 paste_add(NULL, (char *)out, outlen); 2738 } 2739 2740 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */ 2741 static void 2742 input_osc_104(struct input_ctx *ictx, const char *p) 2743 { 2744 char *copy, *s; 2745 long idx; 2746 int bad = 0, redraw = 0; 2747 2748 if (*p == '\0') { 2749 colour_palette_clear(ictx->palette); 2750 screen_write_fullredraw(&ictx->ctx); 2751 return; 2752 } 2753 2754 copy = s = xstrdup(p); 2755 while (*s != '\0') { 2756 idx = strtol(s, &s, 10); 2757 if (*s != '\0' && *s != ';') { 2758 bad = 1; 2759 break; 2760 } 2761 if (idx < 0 || idx >= 256) { 2762 bad = 1; 2763 break; 2764 } 2765 if (colour_palette_set(ictx->palette, idx, -1)) 2766 redraw = 1; 2767 if (*s == ';') 2768 s++; 2769 } 2770 if (bad) 2771 log_debug("bad OSC 104: %s", p); 2772 if (redraw) 2773 screen_write_fullredraw(&ictx->ctx); 2774 free(copy); 2775 } 2776 2777 void 2778 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len, 2779 const char *end) 2780 { 2781 char *out = NULL; 2782 size_t outlen = 0; 2783 2784 if (buf != NULL && len != 0) { 2785 outlen = 4 * ((len + 2) / 3) + 1; 2786 out = xmalloc(outlen); 2787 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) { 2788 free(out); 2789 return; 2790 } 2791 } 2792 2793 bufferevent_write(bev, "\033]52;;", 6); 2794 if (outlen != 0) 2795 bufferevent_write(bev, out, outlen); 2796 bufferevent_write(bev, end, strlen(end)); 2797 free(out); 2798 } 2799