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Fix a memory leak, from Japin Li in GitHub issue 3358.
[tmux.git] / input.c
blob8b174769d4a119e8ac5c694d4e3f5836a8a0c855
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_8(struct input_ctx *, const char *);
139 static void input_osc_10(struct input_ctx *, const char *);
140 static void input_osc_11(struct input_ctx *, const char *);
141 static void input_osc_12(struct input_ctx *, const char *);
142 static void input_osc_52(struct input_ctx *, const char *);
143 static void input_osc_104(struct input_ctx *, const char *);
144 static void input_osc_110(struct input_ctx *, const char *);
145 static void input_osc_111(struct input_ctx *, const char *);
146 static void input_osc_112(struct input_ctx *, const char *);
147
148 /* Transition entry/exit handlers. */
149 static void input_clear(struct input_ctx *);
150 static void input_ground(struct input_ctx *);
151 static void input_enter_dcs(struct input_ctx *);
152 static void input_enter_osc(struct input_ctx *);
153 static void input_exit_osc(struct input_ctx *);
154 static void input_enter_apc(struct input_ctx *);
155 static void input_exit_apc(struct input_ctx *);
156 static void input_enter_rename(struct input_ctx *);
157 static void input_exit_rename(struct input_ctx *);
158
159 /* Input state handlers. */
160 static int input_print(struct input_ctx *);
161 static int input_intermediate(struct input_ctx *);
162 static int input_parameter(struct input_ctx *);
163 static int input_input(struct input_ctx *);
164 static int input_c0_dispatch(struct input_ctx *);
165 static int input_esc_dispatch(struct input_ctx *);
166 static int input_csi_dispatch(struct input_ctx *);
167 static void input_csi_dispatch_rm(struct input_ctx *);
168 static void input_csi_dispatch_rm_private(struct input_ctx *);
169 static void input_csi_dispatch_sm(struct input_ctx *);
170 static void input_csi_dispatch_sm_private(struct input_ctx *);
171 static void input_csi_dispatch_winops(struct input_ctx *);
172 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
173 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
174 static void input_csi_dispatch_sgr(struct input_ctx *);
175 static int input_dcs_dispatch(struct input_ctx *);
176 static int input_top_bit_set(struct input_ctx *);
177 static int input_end_bel(struct input_ctx *);
178
179 /* Command table comparison function. */
180 static int input_table_compare(const void *, const void *);
181
182 /* Command table entry. */
183 struct input_table_entry {
184 int ch;
185 const char *interm;
186 int type;
187 };
188
189 /* Escape commands. */
190 enum input_esc_type {
191 INPUT_ESC_DECALN,
192 INPUT_ESC_DECKPAM,
193 INPUT_ESC_DECKPNM,
194 INPUT_ESC_DECRC,
195 INPUT_ESC_DECSC,
196 INPUT_ESC_HTS,
197 INPUT_ESC_IND,
198 INPUT_ESC_NEL,
199 INPUT_ESC_RI,
200 INPUT_ESC_RIS,
201 INPUT_ESC_SCSG0_OFF,
202 INPUT_ESC_SCSG0_ON,
203 INPUT_ESC_SCSG1_OFF,
204 INPUT_ESC_SCSG1_ON,
205 INPUT_ESC_ST,
206 };
207
208 /* Escape command table. */
209 static const struct input_table_entry input_esc_table[] = {
210 { '0', "(", INPUT_ESC_SCSG0_ON },
211 { '0', ")", INPUT_ESC_SCSG1_ON },
212 { '7', "", INPUT_ESC_DECSC },
213 { '8', "", INPUT_ESC_DECRC },
214 { '8', "#", INPUT_ESC_DECALN },
215 { '=', "", INPUT_ESC_DECKPAM },
216 { '>', "", INPUT_ESC_DECKPNM },
217 { 'B', "(", INPUT_ESC_SCSG0_OFF },
218 { 'B', ")", INPUT_ESC_SCSG1_OFF },
219 { 'D', "", INPUT_ESC_IND },
220 { 'E', "", INPUT_ESC_NEL },
221 { 'H', "", INPUT_ESC_HTS },
222 { 'M', "", INPUT_ESC_RI },
223 { '\\', "", INPUT_ESC_ST },
224 { 'c', "", INPUT_ESC_RIS },
225 };
226
227 /* Control (CSI) commands. */
228 enum input_csi_type {
229 INPUT_CSI_CBT,
230 INPUT_CSI_CNL,
231 INPUT_CSI_CPL,
232 INPUT_CSI_CUB,
233 INPUT_CSI_CUD,
234 INPUT_CSI_CUF,
235 INPUT_CSI_CUP,
236 INPUT_CSI_CUU,
237 INPUT_CSI_DA,
238 INPUT_CSI_DA_TWO,
239 INPUT_CSI_DCH,
240 INPUT_CSI_DECSCUSR,
241 INPUT_CSI_DECSTBM,
242 INPUT_CSI_DL,
243 INPUT_CSI_DSR,
244 INPUT_CSI_ECH,
245 INPUT_CSI_ED,
246 INPUT_CSI_EL,
247 INPUT_CSI_HPA,
248 INPUT_CSI_ICH,
249 INPUT_CSI_IL,
250 INPUT_CSI_MODOFF,
251 INPUT_CSI_MODSET,
252 INPUT_CSI_RCP,
253 INPUT_CSI_REP,
254 INPUT_CSI_RM,
255 INPUT_CSI_RM_PRIVATE,
256 INPUT_CSI_SCP,
257 INPUT_CSI_SD,
258 INPUT_CSI_SGR,
259 INPUT_CSI_SM,
260 INPUT_CSI_SM_PRIVATE,
261 INPUT_CSI_SU,
262 INPUT_CSI_TBC,
263 INPUT_CSI_VPA,
264 INPUT_CSI_WINOPS,
265 INPUT_CSI_XDA,
266 };
267
268 /* Control (CSI) command table. */
269 static const struct input_table_entry input_csi_table[] = {
270 { '@', "", INPUT_CSI_ICH },
271 { 'A', "", INPUT_CSI_CUU },
272 { 'B', "", INPUT_CSI_CUD },
273 { 'C', "", INPUT_CSI_CUF },
274 { 'D', "", INPUT_CSI_CUB },
275 { 'E', "", INPUT_CSI_CNL },
276 { 'F', "", INPUT_CSI_CPL },
277 { 'G', "", INPUT_CSI_HPA },
278 { 'H', "", INPUT_CSI_CUP },
279 { 'J', "", INPUT_CSI_ED },
280 { 'K', "", INPUT_CSI_EL },
281 { 'L', "", INPUT_CSI_IL },
282 { 'M', "", INPUT_CSI_DL },
283 { 'P', "", INPUT_CSI_DCH },
284 { 'S', "", INPUT_CSI_SU },
285 { 'T', "", INPUT_CSI_SD },
286 { 'X', "", INPUT_CSI_ECH },
287 { 'Z', "", INPUT_CSI_CBT },
288 { '`', "", INPUT_CSI_HPA },
289 { 'b', "", INPUT_CSI_REP },
290 { 'c', "", INPUT_CSI_DA },
291 { 'c', ">", INPUT_CSI_DA_TWO },
292 { 'd', "", INPUT_CSI_VPA },
293 { 'f', "", INPUT_CSI_CUP },
294 { 'g', "", INPUT_CSI_TBC },
295 { 'h', "", INPUT_CSI_SM },
296 { 'h', "?", INPUT_CSI_SM_PRIVATE },
297 { 'l', "", INPUT_CSI_RM },
298 { 'l', "?", INPUT_CSI_RM_PRIVATE },
299 { 'm', "", INPUT_CSI_SGR },
300 { 'm', ">", INPUT_CSI_MODSET },
301 { 'n', "", INPUT_CSI_DSR },
302 { 'n', ">", INPUT_CSI_MODOFF },
303 { 'q', " ", INPUT_CSI_DECSCUSR },
304 { 'q', ">", INPUT_CSI_XDA },
305 { 'r', "", INPUT_CSI_DECSTBM },
306 { 's', "", INPUT_CSI_SCP },
307 { 't', "", INPUT_CSI_WINOPS },
308 { 'u', "", INPUT_CSI_RCP },
309 };
310
311 /* Input transition. */
312 struct input_transition {
313 int first;
314 int last;
315
316 int (*handler)(struct input_ctx *);
317 const struct input_state *state;
318 };
319
320 /* Input state. */
321 struct input_state {
322 const char *name;
323 void (*enter)(struct input_ctx *);
324 void (*exit)(struct input_ctx *);
325 const struct input_transition *transitions;
326 };
327
328 /* State transitions available from all states. */
329 #define INPUT_STATE_ANYWHERE \
330 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
331 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
332 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
333
334 /* Forward declarations of state tables. */
335 static const struct input_transition input_state_ground_table[];
336 static const struct input_transition input_state_esc_enter_table[];
337 static const struct input_transition input_state_esc_intermediate_table[];
338 static const struct input_transition input_state_csi_enter_table[];
339 static const struct input_transition input_state_csi_parameter_table[];
340 static const struct input_transition input_state_csi_intermediate_table[];
341 static const struct input_transition input_state_csi_ignore_table[];
342 static const struct input_transition input_state_dcs_enter_table[];
343 static const struct input_transition input_state_dcs_parameter_table[];
344 static const struct input_transition input_state_dcs_intermediate_table[];
345 static const struct input_transition input_state_dcs_handler_table[];
346 static const struct input_transition input_state_dcs_escape_table[];
347 static const struct input_transition input_state_dcs_ignore_table[];
348 static const struct input_transition input_state_osc_string_table[];
349 static const struct input_transition input_state_apc_string_table[];
350 static const struct input_transition input_state_rename_string_table[];
351 static const struct input_transition input_state_consume_st_table[];
352
353 /* ground state definition. */
354 static const struct input_state input_state_ground = {
355 "ground",
356 input_ground, NULL,
357 input_state_ground_table
358 };
359
360 /* esc_enter state definition. */
361 static const struct input_state input_state_esc_enter = {
362 "esc_enter",
363 input_clear, NULL,
364 input_state_esc_enter_table
365 };
366
367 /* esc_intermediate state definition. */
368 static const struct input_state input_state_esc_intermediate = {
369 "esc_intermediate",
370 NULL, NULL,
371 input_state_esc_intermediate_table
372 };
373
374 /* csi_enter state definition. */
375 static const struct input_state input_state_csi_enter = {
376 "csi_enter",
377 input_clear, NULL,
378 input_state_csi_enter_table
379 };
380
381 /* csi_parameter state definition. */
382 static const struct input_state input_state_csi_parameter = {
383 "csi_parameter",
384 NULL, NULL,
385 input_state_csi_parameter_table
386 };
387
388 /* csi_intermediate state definition. */
389 static const struct input_state input_state_csi_intermediate = {
390 "csi_intermediate",
391 NULL, NULL,
392 input_state_csi_intermediate_table
393 };
394
395 /* csi_ignore state definition. */
396 static const struct input_state input_state_csi_ignore = {
397 "csi_ignore",
398 NULL, NULL,
399 input_state_csi_ignore_table
400 };
401
402 /* dcs_enter state definition. */
403 static const struct input_state input_state_dcs_enter = {
404 "dcs_enter",
405 input_enter_dcs, NULL,
406 input_state_dcs_enter_table
407 };
408
409 /* dcs_parameter state definition. */
410 static const struct input_state input_state_dcs_parameter = {
411 "dcs_parameter",
412 NULL, NULL,
413 input_state_dcs_parameter_table
414 };
415
416 /* dcs_intermediate state definition. */
417 static const struct input_state input_state_dcs_intermediate = {
418 "dcs_intermediate",
419 NULL, NULL,
420 input_state_dcs_intermediate_table
421 };
422
423 /* dcs_handler state definition. */
424 static const struct input_state input_state_dcs_handler = {
425 "dcs_handler",
426 NULL, NULL,
427 input_state_dcs_handler_table
428 };
429
430 /* dcs_escape state definition. */
431 static const struct input_state input_state_dcs_escape = {
432 "dcs_escape",
433 NULL, NULL,
434 input_state_dcs_escape_table
435 };
436
437 /* dcs_ignore state definition. */
438 static const struct input_state input_state_dcs_ignore = {
439 "dcs_ignore",
440 NULL, NULL,
441 input_state_dcs_ignore_table
442 };
443
444 /* osc_string state definition. */
445 static const struct input_state input_state_osc_string = {
446 "osc_string",
447 input_enter_osc, input_exit_osc,
448 input_state_osc_string_table
449 };
450
451 /* apc_string state definition. */
452 static const struct input_state input_state_apc_string = {
453 "apc_string",
454 input_enter_apc, input_exit_apc,
455 input_state_apc_string_table
456 };
457
458 /* rename_string state definition. */
459 static const struct input_state input_state_rename_string = {
460 "rename_string",
461 input_enter_rename, input_exit_rename,
462 input_state_rename_string_table
463 };
464
465 /* consume_st state definition. */
466 static const struct input_state input_state_consume_st = {
467 "consume_st",
468 input_enter_rename, NULL, /* rename also waits for ST */
469 input_state_consume_st_table
470 };
471
472 /* ground state table. */
473 static const struct input_transition input_state_ground_table[] = {
474 INPUT_STATE_ANYWHERE,
475
476 { 0x00, 0x17, input_c0_dispatch, NULL },
477 { 0x19, 0x19, input_c0_dispatch, NULL },
478 { 0x1c, 0x1f, input_c0_dispatch, NULL },
479 { 0x20, 0x7e, input_print, NULL },
480 { 0x7f, 0x7f, NULL, NULL },
481 { 0x80, 0xff, input_top_bit_set, NULL },
482
483 { -1, -1, NULL, NULL }
484 };
485
486 /* esc_enter state table. */
487 static const struct input_transition input_state_esc_enter_table[] = {
488 INPUT_STATE_ANYWHERE,
489
490 { 0x00, 0x17, input_c0_dispatch, NULL },
491 { 0x19, 0x19, input_c0_dispatch, NULL },
492 { 0x1c, 0x1f, input_c0_dispatch, NULL },
493 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
494 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
495 { 0x50, 0x50, NULL, &input_state_dcs_enter },
496 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
497 { 0x58, 0x58, NULL, &input_state_consume_st },
498 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
499 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
500 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
501 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
502 { 0x5d, 0x5d, NULL, &input_state_osc_string },
503 { 0x5e, 0x5e, NULL, &input_state_consume_st },
504 { 0x5f, 0x5f, NULL, &input_state_apc_string },
505 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
506 { 0x6b, 0x6b, NULL, &input_state_rename_string },
507 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
508 { 0x7f, 0xff, NULL, NULL },
509
510 { -1, -1, NULL, NULL }
511 };
512
513 /* esc_intermediate state table. */
514 static const struct input_transition input_state_esc_intermediate_table[] = {
515 INPUT_STATE_ANYWHERE,
516
517 { 0x00, 0x17, input_c0_dispatch, NULL },
518 { 0x19, 0x19, input_c0_dispatch, NULL },
519 { 0x1c, 0x1f, input_c0_dispatch, NULL },
520 { 0x20, 0x2f, input_intermediate, NULL },
521 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
522 { 0x7f, 0xff, NULL, NULL },
523
524 { -1, -1, NULL, NULL }
525 };
526
527 /* csi_enter state table. */
528 static const struct input_transition input_state_csi_enter_table[] = {
529 INPUT_STATE_ANYWHERE,
530
531 { 0x00, 0x17, input_c0_dispatch, NULL },
532 { 0x19, 0x19, input_c0_dispatch, NULL },
533 { 0x1c, 0x1f, input_c0_dispatch, NULL },
534 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
535 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
536 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
537 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
538 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
539 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
540 { 0x7f, 0xff, NULL, NULL },
541
542 { -1, -1, NULL, NULL }
543 };
544
545 /* csi_parameter state table. */
546 static const struct input_transition input_state_csi_parameter_table[] = {
547 INPUT_STATE_ANYWHERE,
548
549 { 0x00, 0x17, input_c0_dispatch, NULL },
550 { 0x19, 0x19, input_c0_dispatch, NULL },
551 { 0x1c, 0x1f, input_c0_dispatch, NULL },
552 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
553 { 0x30, 0x39, input_parameter, NULL },
554 { 0x3a, 0x3a, input_parameter, NULL },
555 { 0x3b, 0x3b, input_parameter, NULL },
556 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
557 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
558 { 0x7f, 0xff, NULL, NULL },
559
560 { -1, -1, NULL, NULL }
561 };
562
563 /* csi_intermediate state table. */
564 static const struct input_transition input_state_csi_intermediate_table[] = {
565 INPUT_STATE_ANYWHERE,
566
567 { 0x00, 0x17, input_c0_dispatch, NULL },
568 { 0x19, 0x19, input_c0_dispatch, NULL },
569 { 0x1c, 0x1f, input_c0_dispatch, NULL },
570 { 0x20, 0x2f, input_intermediate, NULL },
571 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
572 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
573 { 0x7f, 0xff, NULL, NULL },
574
575 { -1, -1, NULL, NULL }
576 };
577
578 /* csi_ignore state table. */
579 static const struct input_transition input_state_csi_ignore_table[] = {
580 INPUT_STATE_ANYWHERE,
581
582 { 0x00, 0x17, input_c0_dispatch, NULL },
583 { 0x19, 0x19, input_c0_dispatch, NULL },
584 { 0x1c, 0x1f, input_c0_dispatch, NULL },
585 { 0x20, 0x3f, NULL, NULL },
586 { 0x40, 0x7e, NULL, &input_state_ground },
587 { 0x7f, 0xff, NULL, NULL },
588
589 { -1, -1, NULL, NULL }
590 };
591
592 /* dcs_enter state table. */
593 static const struct input_transition input_state_dcs_enter_table[] = {
594 INPUT_STATE_ANYWHERE,
595
596 { 0x00, 0x17, NULL, NULL },
597 { 0x19, 0x19, NULL, NULL },
598 { 0x1c, 0x1f, NULL, NULL },
599 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
600 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
601 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
602 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
603 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
604 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
605 { 0x7f, 0xff, NULL, NULL },
606
607 { -1, -1, NULL, NULL }
608 };
609
610 /* dcs_parameter state table. */
611 static const struct input_transition input_state_dcs_parameter_table[] = {
612 INPUT_STATE_ANYWHERE,
613
614 { 0x00, 0x17, NULL, NULL },
615 { 0x19, 0x19, NULL, NULL },
616 { 0x1c, 0x1f, NULL, NULL },
617 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
618 { 0x30, 0x39, input_parameter, NULL },
619 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
620 { 0x3b, 0x3b, input_parameter, NULL },
621 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
622 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
623 { 0x7f, 0xff, NULL, NULL },
624
625 { -1, -1, NULL, NULL }
626 };
627
628 /* dcs_intermediate state table. */
629 static const struct input_transition input_state_dcs_intermediate_table[] = {
630 INPUT_STATE_ANYWHERE,
631
632 { 0x00, 0x17, NULL, NULL },
633 { 0x19, 0x19, NULL, NULL },
634 { 0x1c, 0x1f, NULL, NULL },
635 { 0x20, 0x2f, input_intermediate, NULL },
636 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
637 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
638 { 0x7f, 0xff, NULL, NULL },
639
640 { -1, -1, NULL, NULL }
641 };
642
643 /* dcs_handler state table. */
644 static const struct input_transition input_state_dcs_handler_table[] = {
645 /* No INPUT_STATE_ANYWHERE */
646
647 { 0x00, 0x1a, input_input, NULL },
648 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
649 { 0x1c, 0xff, input_input, NULL },
650
651 { -1, -1, NULL, NULL }
652 };
653
654 /* dcs_escape state table. */
655 static const struct input_transition input_state_dcs_escape_table[] = {
656 /* No INPUT_STATE_ANYWHERE */
657
658 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
659 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
660 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
661
662 { -1, -1, NULL, NULL }
663 };
664
665 /* dcs_ignore state table. */
666 static const struct input_transition input_state_dcs_ignore_table[] = {
667 INPUT_STATE_ANYWHERE,
668
669 { 0x00, 0x17, NULL, NULL },
670 { 0x19, 0x19, NULL, NULL },
671 { 0x1c, 0x1f, NULL, NULL },
672 { 0x20, 0xff, NULL, NULL },
673
674 { -1, -1, NULL, NULL }
675 };
676
677 /* osc_string state table. */
678 static const struct input_transition input_state_osc_string_table[] = {
679 INPUT_STATE_ANYWHERE,
680
681 { 0x00, 0x06, NULL, NULL },
682 { 0x07, 0x07, input_end_bel, &input_state_ground },
683 { 0x08, 0x17, NULL, NULL },
684 { 0x19, 0x19, NULL, NULL },
685 { 0x1c, 0x1f, NULL, NULL },
686 { 0x20, 0xff, input_input, NULL },
687
688 { -1, -1, NULL, NULL }
689 };
690
691 /* apc_string state table. */
692 static const struct input_transition input_state_apc_string_table[] = {
693 INPUT_STATE_ANYWHERE,
694
695 { 0x00, 0x17, NULL, NULL },
696 { 0x19, 0x19, NULL, NULL },
697 { 0x1c, 0x1f, NULL, NULL },
698 { 0x20, 0xff, input_input, NULL },
699
700 { -1, -1, NULL, NULL }
701 };
702
703 /* rename_string state table. */
704 static const struct input_transition input_state_rename_string_table[] = {
705 INPUT_STATE_ANYWHERE,
706
707 { 0x00, 0x17, NULL, NULL },
708 { 0x19, 0x19, NULL, NULL },
709 { 0x1c, 0x1f, NULL, NULL },
710 { 0x20, 0xff, input_input, NULL },
711
712 { -1, -1, NULL, NULL }
713 };
714
715 /* consume_st state table. */
716 static const struct input_transition input_state_consume_st_table[] = {
717 INPUT_STATE_ANYWHERE,
718
719 { 0x00, 0x17, NULL, NULL },
720 { 0x19, 0x19, NULL, NULL },
721 { 0x1c, 0x1f, NULL, NULL },
722 { 0x20, 0xff, NULL, NULL },
723
724 { -1, -1, NULL, NULL }
725 };
726
727 /* Input table compare. */
728 static int
729 input_table_compare(const void *key, const void *value)
730 {
731 const struct input_ctx *ictx = key;
732 const struct input_table_entry *entry = value;
733
734 if (ictx->ch != entry->ch)
735 return (ictx->ch - entry->ch);
736 return (strcmp(ictx->interm_buf, entry->interm));
737 }
738
739 /*
740 * Timer - if this expires then have been waiting for a terminator for too
741 * long, so reset to ground.
742 */
743 static void
744 input_timer_callback(__unused int fd, __unused short events, void *arg)
745 {
746 struct input_ctx *ictx = arg;
747
748 log_debug("%s: %s expired" , __func__, ictx->state->name);
749 input_reset(ictx, 0);
750 }
751
752 /* Start the timer. */
753 static void
754 input_start_timer(struct input_ctx *ictx)
755 {
756 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
757
758 event_del(&ictx->timer);
759 event_add(&ictx->timer, &tv);
760 }
761
762 /* Reset cell state to default. */
763 static void
764 input_reset_cell(struct input_ctx *ictx)
765 {
766 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
767 ictx->cell.set = 0;
768 ictx->cell.g0set = ictx->cell.g1set = 0;
769
770 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
771 ictx->old_cx = 0;
772 ictx->old_cy = 0;
773 }
774
775 /* Save screen state. */
776 static void
777 input_save_state(struct input_ctx *ictx)
778 {
779 struct screen_write_ctx *sctx = &ictx->ctx;
780 struct screen *s = sctx->s;
781
782 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
783 ictx->old_cx = s->cx;
784 ictx->old_cy = s->cy;
785 ictx->old_mode = s->mode;
786 }
787
788 /* Restore screen state. */
789 static void
790 input_restore_state(struct input_ctx *ictx)
791 {
792 struct screen_write_ctx *sctx = &ictx->ctx;
793
794 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
795 if (ictx->old_mode & MODE_ORIGIN)
796 screen_write_mode_set(sctx, MODE_ORIGIN);
797 else
798 screen_write_mode_clear(sctx, MODE_ORIGIN);
799 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
800 }
801
802 /* Initialise input parser. */
803 struct input_ctx *
804 input_init(struct window_pane *wp, struct bufferevent *bev,
805 struct colour_palette *palette)
806 {
807 struct input_ctx *ictx;
808
809 ictx = xcalloc(1, sizeof *ictx);
810 ictx->wp = wp;
811 ictx->event = bev;
812 ictx->palette = palette;
813
814 ictx->input_space = INPUT_BUF_START;
815 ictx->input_buf = xmalloc(INPUT_BUF_START);
816
817 ictx->since_ground = evbuffer_new();
818 if (ictx->since_ground == NULL)
819 fatalx("out of memory");
820
821 evtimer_set(&ictx->timer, input_timer_callback, ictx);
822
823 input_reset(ictx, 0);
824 return (ictx);
825 }
826
827 /* Destroy input parser. */
828 void
829 input_free(struct input_ctx *ictx)
830 {
831 u_int i;
832
833 for (i = 0; i < ictx->param_list_len; i++) {
834 if (ictx->param_list[i].type == INPUT_STRING)
835 free(ictx->param_list[i].str);
836 }
837
838 event_del(&ictx->timer);
839
840 free(ictx->input_buf);
841 evbuffer_free(ictx->since_ground);
842
843 free(ictx);
844 }
845
846 /* Reset input state and clear screen. */
847 void
848 input_reset(struct input_ctx *ictx, int clear)
849 {
850 struct screen_write_ctx *sctx = &ictx->ctx;
851 struct window_pane *wp = ictx->wp;
852
853 input_reset_cell(ictx);
854
855 if (clear && wp != NULL) {
856 if (TAILQ_EMPTY(&wp->modes))
857 screen_write_start_pane(sctx, wp, &wp->base);
858 else
859 screen_write_start(sctx, &wp->base);
860 screen_write_reset(sctx);
861 screen_write_stop(sctx);
862 }
863
864 input_clear(ictx);
865
866 ictx->last = -1;
867
868 ictx->state = &input_state_ground;
869 ictx->flags = 0;
870 }
871
872 /* Return pending data. */
873 struct evbuffer *
874 input_pending(struct input_ctx *ictx)
875 {
876 return (ictx->since_ground);
877 }
878
879 /* Change input state. */
880 static void
881 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
882 {
883 if (ictx->state->exit != NULL)
884 ictx->state->exit(ictx);
885 ictx->state = itr->state;
886 if (ictx->state->enter != NULL)
887 ictx->state->enter(ictx);
888 }
889
890 /* Parse data. */
891 static void
892 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
893 {
894 struct screen_write_ctx *sctx = &ictx->ctx;
895 const struct input_state *state = NULL;
896 const struct input_transition *itr = NULL;
897 size_t off = 0;
898
899 /* Parse the input. */
900 while (off < len) {
901 ictx->ch = buf[off++];
902
903 /* Find the transition. */
904 if (ictx->state != state ||
905 itr == NULL ||
906 ictx->ch < itr->first ||
907 ictx->ch > itr->last) {
908 itr = ictx->state->transitions;
909 while (itr->first != -1 && itr->last != -1) {
910 if (ictx->ch >= itr->first &&
911 ictx->ch <= itr->last)
912 break;
913 itr++;
914 }
915 if (itr->first == -1 || itr->last == -1) {
916 /* No transition? Eh? */
917 fatalx("no transition from state");
918 }
919 }
920 state = ictx->state;
921
922 /*
923 * Any state except print stops the current collection. This is
924 * an optimization to avoid checking if the attributes have
925 * changed for every character. It will stop unnecessarily for
926 * sequences that don't make a terminal change, but they should
927 * be the minority.
928 */
929 if (itr->handler != input_print)
930 screen_write_collect_end(sctx);
931
932 /*
933 * Execute the handler, if any. Don't switch state if it
934 * returns non-zero.
935 */
936 if (itr->handler != NULL && itr->handler(ictx) != 0)
937 continue;
938
939 /* And switch state, if necessary. */
940 if (itr->state != NULL)
941 input_set_state(ictx, itr);
942
943 /* If not in ground state, save input. */
944 if (ictx->state != &input_state_ground)
945 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
946 }
947 }
948
949 /* Parse input from pane. */
950 void
951 input_parse_pane(struct window_pane *wp)
952 {
953 void *new_data;
954 size_t new_size;
955
956 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
957 input_parse_buffer(wp, new_data, new_size);
958 window_pane_update_used_data(wp, &wp->offset, new_size);
959 }
960
961 /* Parse given input. */
962 void
963 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
964 {
965 struct input_ctx *ictx = wp->ictx;
966 struct screen_write_ctx *sctx = &ictx->ctx;
967
968 if (len == 0)
969 return;
970
971 window_update_activity(wp->window);
972 wp->flags |= PANE_CHANGED;
973
974 /* NULL wp if there is a mode set as don't want to update the tty. */
975 if (TAILQ_EMPTY(&wp->modes))
976 screen_write_start_pane(sctx, wp, &wp->base);
977 else
978 screen_write_start(sctx, &wp->base);
979
980 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
981 ictx->state->name, len, (int)len, buf);
982
983 input_parse(ictx, buf, len);
984 screen_write_stop(sctx);
985 }
986
987 /* Parse given input for screen. */
988 void
989 input_parse_screen(struct input_ctx *ictx, struct screen *s,
990 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
991 {
992 struct screen_write_ctx *sctx = &ictx->ctx;
993
994 if (len == 0)
995 return;
996
997 screen_write_start_callback(sctx, s, cb, arg);
998 input_parse(ictx, buf, len);
999 screen_write_stop(sctx);
1000 }
1001
1002 /* Split the parameter list (if any). */
1003 static int
1004 input_split(struct input_ctx *ictx)
1005 {
1006 const char *errstr;
1007 char *ptr, *out;
1008 struct input_param *ip;
1009 u_int i;
1010
1011 for (i = 0; i < ictx->param_list_len; i++) {
1012 if (ictx->param_list[i].type == INPUT_STRING)
1013 free(ictx->param_list[i].str);
1014 }
1015 ictx->param_list_len = 0;
1016
1017 if (ictx->param_len == 0)
1018 return (0);
1019 ip = &ictx->param_list[0];
1020
1021 ptr = ictx->param_buf;
1022 while ((out = strsep(&ptr, ";")) != NULL) {
1023 if (*out == '\0')
1024 ip->type = INPUT_MISSING;
1025 else {
1026 if (strchr(out, ':') != NULL) {
1027 ip->type = INPUT_STRING;
1028 ip->str = xstrdup(out);
1029 } else {
1030 ip->type = INPUT_NUMBER;
1031 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1032 if (errstr != NULL)
1033 return (-1);
1034 }
1035 }
1036 ip = &ictx->param_list[++ictx->param_list_len];
1037 if (ictx->param_list_len == nitems(ictx->param_list))
1038 return (-1);
1039 }
1040
1041 for (i = 0; i < ictx->param_list_len; i++) {
1042 ip = &ictx->param_list[i];
1043 if (ip->type == INPUT_MISSING)
1044 log_debug("parameter %u: missing", i);
1045 else if (ip->type == INPUT_STRING)
1046 log_debug("parameter %u: string %s", i, ip->str);
1047 else if (ip->type == INPUT_NUMBER)
1048 log_debug("parameter %u: number %d", i, ip->num);
1049 }
1050
1051 return (0);
1052 }
1053
1054 /* Get an argument or return default value. */
1055 static int
1056 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1057 {
1058 struct input_param *ip;
1059 int retval;
1060
1061 if (validx >= ictx->param_list_len)
1062 return (defval);
1063 ip = &ictx->param_list[validx];
1064 if (ip->type == INPUT_MISSING)
1065 return (defval);
1066 if (ip->type == INPUT_STRING)
1067 return (-1);
1068 retval = ip->num;
1069 if (retval < minval)
1070 return (minval);
1071 return (retval);
1072 }
1073
1074 /* Reply to terminal query. */
1075 static void
1076 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1077 {
1078 struct bufferevent *bev = ictx->event;
1079 va_list ap;
1080 char *reply;
1081
1082 if (bev == NULL)
1083 return;
1084
1085 va_start(ap, fmt);
1086 xvasprintf(&reply, fmt, ap);
1087 va_end(ap);
1088
1089 bufferevent_write(bev, reply, strlen(reply));
1090 free(reply);
1091 }
1092
1093 /* Clear saved state. */
1094 static void
1095 input_clear(struct input_ctx *ictx)
1096 {
1097 event_del(&ictx->timer);
1098
1099 *ictx->interm_buf = '\0';
1100 ictx->interm_len = 0;
1101
1102 *ictx->param_buf = '\0';
1103 ictx->param_len = 0;
1104
1105 *ictx->input_buf = '\0';
1106 ictx->input_len = 0;
1107
1108 ictx->input_end = INPUT_END_ST;
1109
1110 ictx->flags &= ~INPUT_DISCARD;
1111 }
1112
1113 /* Reset for ground state. */
1114 static void
1115 input_ground(struct input_ctx *ictx)
1116 {
1117 event_del(&ictx->timer);
1118 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1119
1120 if (ictx->input_space > INPUT_BUF_START) {
1121 ictx->input_space = INPUT_BUF_START;
1122 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1123 }
1124 }
1125
1126 /* Output this character to the screen. */
1127 static int
1128 input_print(struct input_ctx *ictx)
1129 {
1130 struct screen_write_ctx *sctx = &ictx->ctx;
1131 int set;
1132
1133 ictx->utf8started = 0; /* can't be valid UTF-8 */
1134
1135 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1136 if (set == 1)
1137 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1138 else
1139 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1140
1141 utf8_set(&ictx->cell.cell.data, ictx->ch);
1142 screen_write_collect_add(sctx, &ictx->cell.cell);
1143 ictx->last = ictx->ch;
1144
1145 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1146
1147 return (0);
1148 }
1149
1150 /* Collect intermediate string. */
1151 static int
1152 input_intermediate(struct input_ctx *ictx)
1153 {
1154 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1155 ictx->flags |= INPUT_DISCARD;
1156 else {
1157 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1158 ictx->interm_buf[ictx->interm_len] = '\0';
1159 }
1160
1161 return (0);
1162 }
1163
1164 /* Collect parameter string. */
1165 static int
1166 input_parameter(struct input_ctx *ictx)
1167 {
1168 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1169 ictx->flags |= INPUT_DISCARD;
1170 else {
1171 ictx->param_buf[ictx->param_len++] = ictx->ch;
1172 ictx->param_buf[ictx->param_len] = '\0';
1173 }
1174
1175 return (0);
1176 }
1177
1178 /* Collect input string. */
1179 static int
1180 input_input(struct input_ctx *ictx)
1181 {
1182 size_t available;
1183
1184 available = ictx->input_space;
1185 while (ictx->input_len + 1 >= available) {
1186 available *= 2;
1187 if (available > INPUT_BUF_LIMIT) {
1188 ictx->flags |= INPUT_DISCARD;
1189 return (0);
1190 }
1191 ictx->input_buf = xrealloc(ictx->input_buf, available);
1192 ictx->input_space = available;
1193 }
1194 ictx->input_buf[ictx->input_len++] = ictx->ch;
1195 ictx->input_buf[ictx->input_len] = '\0';
1196
1197 return (0);
1198 }
1199
1200 /* Execute C0 control sequence. */
1201 static int
1202 input_c0_dispatch(struct input_ctx *ictx)
1203 {
1204 struct screen_write_ctx *sctx = &ictx->ctx;
1205 struct window_pane *wp = ictx->wp;
1206 struct screen *s = sctx->s;
1207
1208 ictx->utf8started = 0; /* can't be valid UTF-8 */
1209
1210 log_debug("%s: '%c'", __func__, ictx->ch);
1211
1212 switch (ictx->ch) {
1213 case '\000': /* NUL */
1214 break;
1215 case '\007': /* BEL */
1216 if (wp != NULL)
1217 alerts_queue(wp->window, WINDOW_BELL);
1218 break;
1219 case '\010': /* BS */
1220 screen_write_backspace(sctx);
1221 break;
1222 case '\011': /* HT */
1223 /* Don't tab beyond the end of the line. */
1224 if (s->cx >= screen_size_x(s) - 1)
1225 break;
1226
1227 /* Find the next tab point, or use the last column if none. */
1228 do {
1229 s->cx++;
1230 if (bit_test(s->tabs, s->cx))
1231 break;
1232 } while (s->cx < screen_size_x(s) - 1);
1233 break;
1234 case '\012': /* LF */
1235 case '\013': /* VT */
1236 case '\014': /* FF */
1237 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1238 if (s->mode & MODE_CRLF)
1239 screen_write_carriagereturn(sctx);
1240 break;
1241 case '\015': /* CR */
1242 screen_write_carriagereturn(sctx);
1243 break;
1244 case '\016': /* SO */
1245 ictx->cell.set = 1;
1246 break;
1247 case '\017': /* SI */
1248 ictx->cell.set = 0;
1249 break;
1250 default:
1251 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1252 break;
1253 }
1254
1255 ictx->last = -1;
1256 return (0);
1257 }
1258
1259 /* Execute escape sequence. */
1260 static int
1261 input_esc_dispatch(struct input_ctx *ictx)
1262 {
1263 struct screen_write_ctx *sctx = &ictx->ctx;
1264 struct screen *s = sctx->s;
1265 struct input_table_entry *entry;
1266
1267 if (ictx->flags & INPUT_DISCARD)
1268 return (0);
1269 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1270
1271 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1272 sizeof input_esc_table[0], input_table_compare);
1273 if (entry == NULL) {
1274 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1275 return (0);
1276 }
1277
1278 switch (entry->type) {
1279 case INPUT_ESC_RIS:
1280 colour_palette_clear(ictx->palette);
1281 input_reset_cell(ictx);
1282 screen_write_reset(sctx);
1283 screen_write_fullredraw(sctx);
1284 break;
1285 case INPUT_ESC_IND:
1286 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1287 break;
1288 case INPUT_ESC_NEL:
1289 screen_write_carriagereturn(sctx);
1290 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1291 break;
1292 case INPUT_ESC_HTS:
1293 if (s->cx < screen_size_x(s))
1294 bit_set(s->tabs, s->cx);
1295 break;
1296 case INPUT_ESC_RI:
1297 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1298 break;
1299 case INPUT_ESC_DECKPAM:
1300 screen_write_mode_set(sctx, MODE_KKEYPAD);
1301 break;
1302 case INPUT_ESC_DECKPNM:
1303 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1304 break;
1305 case INPUT_ESC_DECSC:
1306 input_save_state(ictx);
1307 break;
1308 case INPUT_ESC_DECRC:
1309 input_restore_state(ictx);
1310 break;
1311 case INPUT_ESC_DECALN:
1312 screen_write_alignmenttest(sctx);
1313 break;
1314 case INPUT_ESC_SCSG0_ON:
1315 ictx->cell.g0set = 1;
1316 break;
1317 case INPUT_ESC_SCSG0_OFF:
1318 ictx->cell.g0set = 0;
1319 break;
1320 case INPUT_ESC_SCSG1_ON:
1321 ictx->cell.g1set = 1;
1322 break;
1323 case INPUT_ESC_SCSG1_OFF:
1324 ictx->cell.g1set = 0;
1325 break;
1326 case INPUT_ESC_ST:
1327 /* ST terminates OSC but the state transition already did it. */
1328 break;
1329 }
1330
1331 ictx->last = -1;
1332 return (0);
1333 }
1334
1335 /* Execute control sequence. */
1336 static int
1337 input_csi_dispatch(struct input_ctx *ictx)
1338 {
1339 struct screen_write_ctx *sctx = &ictx->ctx;
1340 struct screen *s = sctx->s;
1341 struct input_table_entry *entry;
1342 int i, n, m;
1343 u_int cx, bg = ictx->cell.cell.bg;
1344
1345 if (ictx->flags & INPUT_DISCARD)
1346 return (0);
1347
1348 log_debug("%s: '%c' \"%s\" \"%s\"",
1349 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf);
1350
1351 if (input_split(ictx) != 0)
1352 return (0);
1353
1354 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1355 sizeof input_csi_table[0], input_table_compare);
1356 if (entry == NULL) {
1357 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1358 return (0);
1359 }
1360
1361 switch (entry->type) {
1362 case INPUT_CSI_CBT:
1363 /* Find the previous tab point, n times. */
1364 cx = s->cx;
1365 if (cx > screen_size_x(s) - 1)
1366 cx = screen_size_x(s) - 1;
1367 n = input_get(ictx, 0, 1, 1);
1368 if (n == -1)
1369 break;
1370 while (cx > 0 && n-- > 0) {
1371 do
1372 cx--;
1373 while (cx > 0 && !bit_test(s->tabs, cx));
1374 }
1375 s->cx = cx;
1376 break;
1377 case INPUT_CSI_CUB:
1378 n = input_get(ictx, 0, 1, 1);
1379 if (n != -1)
1380 screen_write_cursorleft(sctx, n);
1381 break;
1382 case INPUT_CSI_CUD:
1383 n = input_get(ictx, 0, 1, 1);
1384 if (n != -1)
1385 screen_write_cursordown(sctx, n);
1386 break;
1387 case INPUT_CSI_CUF:
1388 n = input_get(ictx, 0, 1, 1);
1389 if (n != -1)
1390 screen_write_cursorright(sctx, n);
1391 break;
1392 case INPUT_CSI_CUP:
1393 n = input_get(ictx, 0, 1, 1);
1394 m = input_get(ictx, 1, 1, 1);
1395 if (n != -1 && m != -1)
1396 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1397 break;
1398 case INPUT_CSI_MODSET:
1399 n = input_get(ictx, 0, 0, 0);
1400 m = input_get(ictx, 1, 0, 0);
1401 if (options_get_number(global_options, "extended-keys") == 2)
1402 break;
1403 if (n == 0 || (n == 4 && m == 0))
1404 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1405 else if (n == 4 && (m == 1 || m == 2))
1406 screen_write_mode_set(sctx, MODE_KEXTENDED);
1407 break;
1408 case INPUT_CSI_MODOFF:
1409 n = input_get(ictx, 0, 0, 0);
1410 if (n == 4)
1411 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1412 break;
1413 case INPUT_CSI_WINOPS:
1414 input_csi_dispatch_winops(ictx);
1415 break;
1416 case INPUT_CSI_CUU:
1417 n = input_get(ictx, 0, 1, 1);
1418 if (n != -1)
1419 screen_write_cursorup(sctx, n);
1420 break;
1421 case INPUT_CSI_CNL:
1422 n = input_get(ictx, 0, 1, 1);
1423 if (n != -1) {
1424 screen_write_carriagereturn(sctx);
1425 screen_write_cursordown(sctx, n);
1426 }
1427 break;
1428 case INPUT_CSI_CPL:
1429 n = input_get(ictx, 0, 1, 1);
1430 if (n != -1) {
1431 screen_write_carriagereturn(sctx);
1432 screen_write_cursorup(sctx, n);
1433 }
1434 break;
1435 case INPUT_CSI_DA:
1436 switch (input_get(ictx, 0, 0, 0)) {
1437 case -1:
1438 break;
1439 case 0:
1440 input_reply(ictx, "\033[?1;2c");
1441 break;
1442 default:
1443 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1444 break;
1445 }
1446 break;
1447 case INPUT_CSI_DA_TWO:
1448 switch (input_get(ictx, 0, 0, 0)) {
1449 case -1:
1450 break;
1451 case 0:
1452 input_reply(ictx, "\033[>84;0;0c");
1453 break;
1454 default:
1455 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1456 break;
1457 }
1458 break;
1459 case INPUT_CSI_ECH:
1460 n = input_get(ictx, 0, 1, 1);
1461 if (n != -1)
1462 screen_write_clearcharacter(sctx, n, bg);
1463 break;
1464 case INPUT_CSI_DCH:
1465 n = input_get(ictx, 0, 1, 1);
1466 if (n != -1)
1467 screen_write_deletecharacter(sctx, n, bg);
1468 break;
1469 case INPUT_CSI_DECSTBM:
1470 n = input_get(ictx, 0, 1, 1);
1471 m = input_get(ictx, 1, 1, screen_size_y(s));
1472 if (n != -1 && m != -1)
1473 screen_write_scrollregion(sctx, n - 1, m - 1);
1474 break;
1475 case INPUT_CSI_DL:
1476 n = input_get(ictx, 0, 1, 1);
1477 if (n != -1)
1478 screen_write_deleteline(sctx, n, bg);
1479 break;
1480 case INPUT_CSI_DSR:
1481 switch (input_get(ictx, 0, 0, 0)) {
1482 case -1:
1483 break;
1484 case 5:
1485 input_reply(ictx, "\033[0n");
1486 break;
1487 case 6:
1488 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1489 break;
1490 default:
1491 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1492 break;
1493 }
1494 break;
1495 case INPUT_CSI_ED:
1496 switch (input_get(ictx, 0, 0, 0)) {
1497 case -1:
1498 break;
1499 case 0:
1500 screen_write_clearendofscreen(sctx, bg);
1501 break;
1502 case 1:
1503 screen_write_clearstartofscreen(sctx, bg);
1504 break;
1505 case 2:
1506 screen_write_clearscreen(sctx, bg);
1507 break;
1508 case 3:
1509 if (input_get(ictx, 1, 0, 0) == 0) {
1510 /*
1511 * Linux console extension to clear history
1512 * (for example before locking the screen).
1513 */
1514 screen_write_clearhistory(sctx);
1515 }
1516 break;
1517 default:
1518 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1519 break;
1520 }
1521 break;
1522 case INPUT_CSI_EL:
1523 switch (input_get(ictx, 0, 0, 0)) {
1524 case -1:
1525 break;
1526 case 0:
1527 screen_write_clearendofline(sctx, bg);
1528 break;
1529 case 1:
1530 screen_write_clearstartofline(sctx, bg);
1531 break;
1532 case 2:
1533 screen_write_clearline(sctx, bg);
1534 break;
1535 default:
1536 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1537 break;
1538 }
1539 break;
1540 case INPUT_CSI_HPA:
1541 n = input_get(ictx, 0, 1, 1);
1542 if (n != -1)
1543 screen_write_cursormove(sctx, n - 1, -1, 1);
1544 break;
1545 case INPUT_CSI_ICH:
1546 n = input_get(ictx, 0, 1, 1);
1547 if (n != -1)
1548 screen_write_insertcharacter(sctx, n, bg);
1549 break;
1550 case INPUT_CSI_IL:
1551 n = input_get(ictx, 0, 1, 1);
1552 if (n != -1)
1553 screen_write_insertline(sctx, n, bg);
1554 break;
1555 case INPUT_CSI_REP:
1556 n = input_get(ictx, 0, 1, 1);
1557 if (n == -1)
1558 break;
1559
1560 m = screen_size_x(s) - s->cx;
1561 if (n > m)
1562 n = m;
1563
1564 if (ictx->last == -1)
1565 break;
1566 ictx->ch = ictx->last;
1567
1568 for (i = 0; i < n; i++)
1569 input_print(ictx);
1570 break;
1571 case INPUT_CSI_RCP:
1572 input_restore_state(ictx);
1573 break;
1574 case INPUT_CSI_RM:
1575 input_csi_dispatch_rm(ictx);
1576 break;
1577 case INPUT_CSI_RM_PRIVATE:
1578 input_csi_dispatch_rm_private(ictx);
1579 break;
1580 case INPUT_CSI_SCP:
1581 input_save_state(ictx);
1582 break;
1583 case INPUT_CSI_SGR:
1584 input_csi_dispatch_sgr(ictx);
1585 break;
1586 case INPUT_CSI_SM:
1587 input_csi_dispatch_sm(ictx);
1588 break;
1589 case INPUT_CSI_SM_PRIVATE:
1590 input_csi_dispatch_sm_private(ictx);
1591 break;
1592 case INPUT_CSI_SU:
1593 n = input_get(ictx, 0, 1, 1);
1594 if (n != -1)
1595 screen_write_scrollup(sctx, n, bg);
1596 break;
1597 case INPUT_CSI_SD:
1598 n = input_get(ictx, 0, 1, 1);
1599 if (n != -1)
1600 screen_write_scrolldown(sctx, n, bg);
1601 break;
1602 case INPUT_CSI_TBC:
1603 switch (input_get(ictx, 0, 0, 0)) {
1604 case -1:
1605 break;
1606 case 0:
1607 if (s->cx < screen_size_x(s))
1608 bit_clear(s->tabs, s->cx);
1609 break;
1610 case 3:
1611 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1612 break;
1613 default:
1614 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1615 break;
1616 }
1617 break;
1618 case INPUT_CSI_VPA:
1619 n = input_get(ictx, 0, 1, 1);
1620 if (n != -1)
1621 screen_write_cursormove(sctx, -1, n - 1, 1);
1622 break;
1623 case INPUT_CSI_DECSCUSR:
1624 n = input_get(ictx, 0, 0, 0);
1625 if (n != -1)
1626 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1627 break;
1628 case INPUT_CSI_XDA:
1629 n = input_get(ictx, 0, 0, 0);
1630 if (n == 0)
1631 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1632 break;
1633
1634 }
1635
1636 ictx->last = -1;
1637 return (0);
1638 }
1639
1640 /* Handle CSI RM. */
1641 static void
1642 input_csi_dispatch_rm(struct input_ctx *ictx)
1643 {
1644 struct screen_write_ctx *sctx = &ictx->ctx;
1645 u_int i;
1646
1647 for (i = 0; i < ictx->param_list_len; i++) {
1648 switch (input_get(ictx, i, 0, -1)) {
1649 case -1:
1650 break;
1651 case 4: /* IRM */
1652 screen_write_mode_clear(sctx, MODE_INSERT);
1653 break;
1654 case 34:
1655 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1656 break;
1657 default:
1658 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1659 break;
1660 }
1661 }
1662 }
1663
1664 /* Handle CSI private RM. */
1665 static void
1666 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1667 {
1668 struct screen_write_ctx *sctx = &ictx->ctx;
1669 struct grid_cell *gc = &ictx->cell.cell;
1670 u_int i;
1671
1672 for (i = 0; i < ictx->param_list_len; i++) {
1673 switch (input_get(ictx, i, 0, -1)) {
1674 case -1:
1675 break;
1676 case 1: /* DECCKM */
1677 screen_write_mode_clear(sctx, MODE_KCURSOR);
1678 break;
1679 case 3: /* DECCOLM */
1680 screen_write_cursormove(sctx, 0, 0, 1);
1681 screen_write_clearscreen(sctx, gc->bg);
1682 break;
1683 case 6: /* DECOM */
1684 screen_write_mode_clear(sctx, MODE_ORIGIN);
1685 screen_write_cursormove(sctx, 0, 0, 1);
1686 break;
1687 case 7: /* DECAWM */
1688 screen_write_mode_clear(sctx, MODE_WRAP);
1689 break;
1690 case 12:
1691 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1692 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1693 break;
1694 case 25: /* TCEM */
1695 screen_write_mode_clear(sctx, MODE_CURSOR);
1696 break;
1697 case 1000:
1698 case 1001:
1699 case 1002:
1700 case 1003:
1701 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1702 break;
1703 case 1004:
1704 screen_write_mode_clear(sctx, MODE_FOCUSON);
1705 break;
1706 case 1005:
1707 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1708 break;
1709 case 1006:
1710 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1711 break;
1712 case 47:
1713 case 1047:
1714 screen_write_alternateoff(sctx, gc, 0);
1715 break;
1716 case 1049:
1717 screen_write_alternateoff(sctx, gc, 1);
1718 break;
1719 case 2004:
1720 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1721 break;
1722 default:
1723 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1724 break;
1725 }
1726 }
1727 }
1728
1729 /* Handle CSI SM. */
1730 static void
1731 input_csi_dispatch_sm(struct input_ctx *ictx)
1732 {
1733 struct screen_write_ctx *sctx = &ictx->ctx;
1734 u_int i;
1735
1736 for (i = 0; i < ictx->param_list_len; i++) {
1737 switch (input_get(ictx, i, 0, -1)) {
1738 case -1:
1739 break;
1740 case 4: /* IRM */
1741 screen_write_mode_set(sctx, MODE_INSERT);
1742 break;
1743 case 34:
1744 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1745 break;
1746 default:
1747 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1748 break;
1749 }
1750 }
1751 }
1752
1753 /* Handle CSI private SM. */
1754 static void
1755 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1756 {
1757 struct screen_write_ctx *sctx = &ictx->ctx;
1758 struct window_pane *wp = ictx->wp;
1759 struct grid_cell *gc = &ictx->cell.cell;
1760 u_int i;
1761
1762 for (i = 0; i < ictx->param_list_len; i++) {
1763 switch (input_get(ictx, i, 0, -1)) {
1764 case -1:
1765 break;
1766 case 1: /* DECCKM */
1767 screen_write_mode_set(sctx, MODE_KCURSOR);
1768 break;
1769 case 3: /* DECCOLM */
1770 screen_write_cursormove(sctx, 0, 0, 1);
1771 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1772 break;
1773 case 6: /* DECOM */
1774 screen_write_mode_set(sctx, MODE_ORIGIN);
1775 screen_write_cursormove(sctx, 0, 0, 1);
1776 break;
1777 case 7: /* DECAWM */
1778 screen_write_mode_set(sctx, MODE_WRAP);
1779 break;
1780 case 12:
1781 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1782 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1783 break;
1784 case 25: /* TCEM */
1785 screen_write_mode_set(sctx, MODE_CURSOR);
1786 break;
1787 case 1000:
1788 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1789 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1790 break;
1791 case 1002:
1792 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1793 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1794 break;
1795 case 1003:
1796 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1797 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1798 break;
1799 case 1004:
1800 if (sctx->s->mode & MODE_FOCUSON)
1801 break;
1802 screen_write_mode_set(sctx, MODE_FOCUSON);
1803 if (wp == NULL)
1804 break;
1805 if (!options_get_number(global_options, "focus-events"))
1806 break;
1807 if (wp->flags & PANE_FOCUSED)
1808 bufferevent_write(wp->event, "\033[I", 3);
1809 else
1810 bufferevent_write(wp->event, "\033[O", 3);
1811 break;
1812 case 1005:
1813 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1814 break;
1815 case 1006:
1816 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1817 break;
1818 case 47:
1819 case 1047:
1820 screen_write_alternateon(sctx, gc, 0);
1821 break;
1822 case 1049:
1823 screen_write_alternateon(sctx, gc, 1);
1824 break;
1825 case 2004:
1826 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1827 break;
1828 default:
1829 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1830 break;
1831 }
1832 }
1833 }
1834
1835 /* Handle CSI window operations. */
1836 static void
1837 input_csi_dispatch_winops(struct input_ctx *ictx)
1838 {
1839 struct screen_write_ctx *sctx = &ictx->ctx;
1840 struct screen *s = sctx->s;
1841 struct window_pane *wp = ictx->wp;
1842 u_int x = screen_size_x(s), y = screen_size_y(s);
1843 int n, m;
1844
1845 m = 0;
1846 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1847 switch (n) {
1848 case 1:
1849 case 2:
1850 case 5:
1851 case 6:
1852 case 7:
1853 case 11:
1854 case 13:
1855 case 14:
1856 case 19:
1857 case 20:
1858 case 21:
1859 case 24:
1860 break;
1861 case 3:
1862 case 4:
1863 case 8:
1864 m++;
1865 if (input_get(ictx, m, 0, -1) == -1)
1866 return;
1867 /* FALLTHROUGH */
1868 case 9:
1869 case 10:
1870 m++;
1871 if (input_get(ictx, m, 0, -1) == -1)
1872 return;
1873 break;
1874 case 22:
1875 m++;
1876 switch (input_get(ictx, m, 0, -1)) {
1877 case -1:
1878 return;
1879 case 0:
1880 case 2:
1881 screen_push_title(sctx->s);
1882 break;
1883 }
1884 break;
1885 case 23:
1886 m++;
1887 switch (input_get(ictx, m, 0, -1)) {
1888 case -1:
1889 return;
1890 case 0:
1891 case 2:
1892 screen_pop_title(sctx->s);
1893 if (wp == NULL)
1894 break;
1895 notify_pane("pane-title-changed", wp);
1896 server_redraw_window_borders(wp->window);
1897 server_status_window(wp->window);
1898 break;
1899 }
1900 break;
1901 case 18:
1902 input_reply(ictx, "\033[8;%u;%ut", y, x);
1903 break;
1904 default:
1905 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1906 break;
1907 }
1908 m++;
1909 }
1910 }
1911
1912 /* Helper for 256 colour SGR. */
1913 static int
1914 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1915 {
1916 struct grid_cell *gc = &ictx->cell.cell;
1917
1918 if (c == -1 || c > 255) {
1919 if (fgbg == 38)
1920 gc->fg = 8;
1921 else if (fgbg == 48)
1922 gc->bg = 8;
1923 } else {
1924 if (fgbg == 38)
1925 gc->fg = c | COLOUR_FLAG_256;
1926 else if (fgbg == 48)
1927 gc->bg = c | COLOUR_FLAG_256;
1928 else if (fgbg == 58)
1929 gc->us = c | COLOUR_FLAG_256;
1930 }
1931 return (1);
1932 }
1933
1934 /* Handle CSI SGR for 256 colours. */
1935 static void
1936 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1937 {
1938 int c;
1939
1940 c = input_get(ictx, (*i) + 1, 0, -1);
1941 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1942 (*i)++;
1943 }
1944
1945 /* Helper for RGB colour SGR. */
1946 static int
1947 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1948 int b)
1949 {
1950 struct grid_cell *gc = &ictx->cell.cell;
1951
1952 if (r == -1 || r > 255)
1953 return (0);
1954 if (g == -1 || g > 255)
1955 return (0);
1956 if (b == -1 || b > 255)
1957 return (0);
1958
1959 if (fgbg == 38)
1960 gc->fg = colour_join_rgb(r, g, b);
1961 else if (fgbg == 48)
1962 gc->bg = colour_join_rgb(r, g, b);
1963 else if (fgbg == 58)
1964 gc->us = colour_join_rgb(r, g, b);
1965 return (1);
1966 }
1967
1968 /* Handle CSI SGR for RGB colours. */
1969 static void
1970 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
1971 {
1972 int r, g, b;
1973
1974 r = input_get(ictx, (*i) + 1, 0, -1);
1975 g = input_get(ictx, (*i) + 2, 0, -1);
1976 b = input_get(ictx, (*i) + 3, 0, -1);
1977 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
1978 (*i) += 3;
1979 }
1980
1981 /* Handle CSI SGR with a ISO parameter. */
1982 static void
1983 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
1984 {
1985 struct grid_cell *gc = &ictx->cell.cell;
1986 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
1987 int p[8];
1988 u_int n;
1989 const char *errstr;
1990
1991 for (n = 0; n < nitems(p); n++)
1992 p[n] = -1;
1993 n = 0;
1994
1995 ptr = copy = xstrdup(s);
1996 while ((out = strsep(&ptr, ":")) != NULL) {
1997 if (*out != '\0') {
1998 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
1999 if (errstr != NULL || n == nitems(p)) {
2000 free(copy);
2001 return;
2002 }
2003 } else {
2004 n++;
2005 if (n == nitems(p)) {
2006 free(copy);
2007 return;
2008 }
2009 }
2010 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2011 }
2012 free(copy);
2013
2014 if (n == 0)
2015 return;
2016 if (p[0] == 4) {
2017 if (n != 2)
2018 return;
2019 switch (p[1]) {
2020 case 0:
2021 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2022 break;
2023 case 1:
2024 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2025 gc->attr |= GRID_ATTR_UNDERSCORE;
2026 break;
2027 case 2:
2028 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2029 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2030 break;
2031 case 3:
2032 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2033 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2034 break;
2035 case 4:
2036 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2037 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2038 break;
2039 case 5:
2040 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2041 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2042 break;
2043 }
2044 return;
2045 }
2046 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2047 return;
2048 switch (p[1]) {
2049 case 2:
2050 if (n < 3)
2051 break;
2052 if (n == 5)
2053 i = 2;
2054 else
2055 i = 3;
2056 if (n < i + 3)
2057 break;
2058 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2059 p[i + 2]);
2060 break;
2061 case 5:
2062 if (n < 3)
2063 break;
2064 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2065 break;
2066 }
2067 }
2068
2069 /* Handle CSI SGR. */
2070 static void
2071 input_csi_dispatch_sgr(struct input_ctx *ictx)
2072 {
2073 struct grid_cell *gc = &ictx->cell.cell;
2074 u_int i;
2075 int n;
2076
2077 if (ictx->param_list_len == 0) {
2078 memcpy(gc, &grid_default_cell, sizeof *gc);
2079 return;
2080 }
2081
2082 for (i = 0; i < ictx->param_list_len; i++) {
2083 if (ictx->param_list[i].type == INPUT_STRING) {
2084 input_csi_dispatch_sgr_colon(ictx, i);
2085 continue;
2086 }
2087 n = input_get(ictx, i, 0, 0);
2088 if (n == -1)
2089 continue;
2090
2091 if (n == 38 || n == 48 || n == 58) {
2092 i++;
2093 switch (input_get(ictx, i, 0, -1)) {
2094 case 2:
2095 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2096 break;
2097 case 5:
2098 input_csi_dispatch_sgr_256(ictx, n, &i);
2099 break;
2100 }
2101 continue;
2102 }
2103
2104 switch (n) {
2105 case 0:
2106 memcpy(gc, &grid_default_cell, sizeof *gc);
2107 break;
2108 case 1:
2109 gc->attr |= GRID_ATTR_BRIGHT;
2110 break;
2111 case 2:
2112 gc->attr |= GRID_ATTR_DIM;
2113 break;
2114 case 3:
2115 gc->attr |= GRID_ATTR_ITALICS;
2116 break;
2117 case 4:
2118 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2119 gc->attr |= GRID_ATTR_UNDERSCORE;
2120 break;
2121 case 5:
2122 case 6:
2123 gc->attr |= GRID_ATTR_BLINK;
2124 break;
2125 case 7:
2126 gc->attr |= GRID_ATTR_REVERSE;
2127 break;
2128 case 8:
2129 gc->attr |= GRID_ATTR_HIDDEN;
2130 break;
2131 case 9:
2132 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2133 break;
2134 case 21:
2135 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2136 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2137 break;
2138 case 22:
2139 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2140 break;
2141 case 23:
2142 gc->attr &= ~GRID_ATTR_ITALICS;
2143 break;
2144 case 24:
2145 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2146 break;
2147 case 25:
2148 gc->attr &= ~GRID_ATTR_BLINK;
2149 break;
2150 case 27:
2151 gc->attr &= ~GRID_ATTR_REVERSE;
2152 break;
2153 case 28:
2154 gc->attr &= ~GRID_ATTR_HIDDEN;
2155 break;
2156 case 29:
2157 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2158 break;
2159 case 30:
2160 case 31:
2161 case 32:
2162 case 33:
2163 case 34:
2164 case 35:
2165 case 36:
2166 case 37:
2167 gc->fg = n - 30;
2168 break;
2169 case 39:
2170 gc->fg = 8;
2171 break;
2172 case 40:
2173 case 41:
2174 case 42:
2175 case 43:
2176 case 44:
2177 case 45:
2178 case 46:
2179 case 47:
2180 gc->bg = n - 40;
2181 break;
2182 case 49:
2183 gc->bg = 8;
2184 break;
2185 case 53:
2186 gc->attr |= GRID_ATTR_OVERLINE;
2187 break;
2188 case 55:
2189 gc->attr &= ~GRID_ATTR_OVERLINE;
2190 break;
2191 case 59:
2192 gc->us = 0;
2193 break;
2194 case 90:
2195 case 91:
2196 case 92:
2197 case 93:
2198 case 94:
2199 case 95:
2200 case 96:
2201 case 97:
2202 gc->fg = n;
2203 break;
2204 case 100:
2205 case 101:
2206 case 102:
2207 case 103:
2208 case 104:
2209 case 105:
2210 case 106:
2211 case 107:
2212 gc->bg = n - 10;
2213 break;
2214 }
2215 }
2216 }
2217
2218 /* End of input with BEL. */
2219 static int
2220 input_end_bel(struct input_ctx *ictx)
2221 {
2222 log_debug("%s", __func__);
2223
2224 ictx->input_end = INPUT_END_BEL;
2225
2226 return (0);
2227 }
2228
2229 /* DCS string started. */
2230 static void
2231 input_enter_dcs(struct input_ctx *ictx)
2232 {
2233 log_debug("%s", __func__);
2234
2235 input_clear(ictx);
2236 input_start_timer(ictx);
2237 ictx->last = -1;
2238 }
2239
2240 /* DCS terminator (ST) received. */
2241 static int
2242 input_dcs_dispatch(struct input_ctx *ictx)
2243 {
2244 struct window_pane *wp = ictx->wp;
2245 struct screen_write_ctx *sctx = &ictx->ctx;
2246 u_char *buf = ictx->input_buf;
2247 size_t len = ictx->input_len;
2248 const char prefix[] = "tmux;";
2249 const u_int prefixlen = (sizeof prefix) - 1;
2250 long long allow_passthrough = 0;
2251
2252 if (wp == NULL)
2253 return (0);
2254 if (ictx->flags & INPUT_DISCARD)
2255 return (0);
2256 allow_passthrough = options_get_number(wp->options,
2257 "allow-passthrough");
2258 if (!allow_passthrough)
2259 return (0);
2260 log_debug("%s: \"%s\"", __func__, buf);
2261
2262 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2263 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2264 allow_passthrough == 2);
2265 }
2266
2267 return (0);
2268 }
2269
2270 /* OSC string started. */
2271 static void
2272 input_enter_osc(struct input_ctx *ictx)
2273 {
2274 log_debug("%s", __func__);
2275
2276 input_clear(ictx);
2277 input_start_timer(ictx);
2278 ictx->last = -1;
2279 }
2280
2281 /* OSC terminator (ST) received. */
2282 static void
2283 input_exit_osc(struct input_ctx *ictx)
2284 {
2285 struct screen_write_ctx *sctx = &ictx->ctx;
2286 struct window_pane *wp = ictx->wp;
2287 u_char *p = ictx->input_buf;
2288 u_int option;
2289
2290 if (ictx->flags & INPUT_DISCARD)
2291 return;
2292 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2293 return;
2294
2295 log_debug("%s: \"%s\" (end %s)", __func__, p,
2296 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2297
2298 option = 0;
2299 while (*p >= '0' && *p <= '9')
2300 option = option * 10 + *p++ - '0';
2301 if (*p != ';' && *p != '\0')
2302 return;
2303 if (*p == ';')
2304 p++;
2305
2306 switch (option) {
2307 case 0:
2308 case 2:
2309 if (screen_set_title(sctx->s, p) && wp != NULL) {
2310 notify_pane("pane-title-changed", wp);
2311 server_redraw_window_borders(wp->window);
2312 server_status_window(wp->window);
2313 }
2314 break;
2315 case 4:
2316 input_osc_4(ictx, p);
2317 break;
2318 case 7:
2319 if (utf8_isvalid(p)) {
2320 screen_set_path(sctx->s, p);
2321 if (wp != NULL) {
2322 server_redraw_window_borders(wp->window);
2323 server_status_window(wp->window);
2324 }
2325 }
2326 break;
2327 case 8:
2328 input_osc_8(ictx, p);
2329 break;
2330 case 10:
2331 input_osc_10(ictx, p);
2332 break;
2333 case 11:
2334 input_osc_11(ictx, p);
2335 break;
2336 case 12:
2337 input_osc_12(ictx, p);
2338 break;
2339 case 52:
2340 input_osc_52(ictx, p);
2341 break;
2342 case 104:
2343 input_osc_104(ictx, p);
2344 break;
2345 case 110:
2346 input_osc_110(ictx, p);
2347 break;
2348 case 111:
2349 input_osc_111(ictx, p);
2350 break;
2351 case 112:
2352 input_osc_112(ictx, p);
2353 break;
2354 default:
2355 log_debug("%s: unknown '%u'", __func__, option);
2356 break;
2357 }
2358 }
2359
2360 /* APC string started. */
2361 static void
2362 input_enter_apc(struct input_ctx *ictx)
2363 {
2364 log_debug("%s", __func__);
2365
2366 input_clear(ictx);
2367 input_start_timer(ictx);
2368 ictx->last = -1;
2369 }
2370
2371 /* APC terminator (ST) received. */
2372 static void
2373 input_exit_apc(struct input_ctx *ictx)
2374 {
2375 struct screen_write_ctx *sctx = &ictx->ctx;
2376 struct window_pane *wp = ictx->wp;
2377
2378 if (ictx->flags & INPUT_DISCARD)
2379 return;
2380 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2381
2382 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2383 notify_pane("pane-title-changed", wp);
2384 server_redraw_window_borders(wp->window);
2385 server_status_window(wp->window);
2386 }
2387 }
2388
2389 /* Rename string started. */
2390 static void
2391 input_enter_rename(struct input_ctx *ictx)
2392 {
2393 log_debug("%s", __func__);
2394
2395 input_clear(ictx);
2396 input_start_timer(ictx);
2397 ictx->last = -1;
2398 }
2399
2400 /* Rename terminator (ST) received. */
2401 static void
2402 input_exit_rename(struct input_ctx *ictx)
2403 {
2404 struct window_pane *wp = ictx->wp;
2405 struct window *w;
2406 struct options_entry *o;
2407
2408 if (wp == NULL)
2409 return;
2410 if (ictx->flags & INPUT_DISCARD)
2411 return;
2412 if (!options_get_number(ictx->wp->options, "allow-rename"))
2413 return;
2414 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2415
2416 if (!utf8_isvalid(ictx->input_buf))
2417 return;
2418 w = wp->window;
2419
2420 if (ictx->input_len == 0) {
2421 o = options_get_only(w->options, "automatic-rename");
2422 if (o != NULL)
2423 options_remove_or_default(o, -1, NULL);
2424 if (!options_get_number(w->options, "automatic-rename"))
2425 window_set_name(w, "");
2426 } else {
2427 options_set_number(w->options, "automatic-rename", 0);
2428 window_set_name(w, ictx->input_buf);
2429 }
2430 server_redraw_window_borders(w);
2431 server_status_window(w);
2432 }
2433
2434 /* Open UTF-8 character. */
2435 static int
2436 input_top_bit_set(struct input_ctx *ictx)
2437 {
2438 struct screen_write_ctx *sctx = &ictx->ctx;
2439 struct utf8_data *ud = &ictx->utf8data;
2440
2441 ictx->last = -1;
2442
2443 if (!ictx->utf8started) {
2444 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2445 return (0);
2446 ictx->utf8started = 1;
2447 return (0);
2448 }
2449
2450 switch (utf8_append(ud, ictx->ch)) {
2451 case UTF8_MORE:
2452 return (0);
2453 case UTF8_ERROR:
2454 ictx->utf8started = 0;
2455 return (0);
2456 case UTF8_DONE:
2457 break;
2458 }
2459 ictx->utf8started = 0;
2460
2461 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2462 (int)ud->size, ud->data, ud->width);
2463
2464 utf8_copy(&ictx->cell.cell.data, ud);
2465 screen_write_collect_add(sctx, &ictx->cell.cell);
2466
2467 return (0);
2468 }
2469
2470 /* Parse colour from OSC. */
2471 static int
2472 input_osc_parse_colour(const char *p)
2473 {
2474 double c, m, y, k = 0;
2475 u_int r, g, b;
2476 size_t len = strlen(p);
2477 int colour = -1;
2478 char *copy;
2479
2480 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) ||
2481 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) ||
2482 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3)
2483 colour = colour_join_rgb(r, g, b);
2484 else if ((len == 18 &&
2485 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) ||
2486 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3))
2487 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8);
2488 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 ||
2489 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) &&
2490 c >= 0 && c <= 1 && m >= 0 && m <= 1 &&
2491 y >= 0 && y <= 1 && k >= 0 && k <= 1) {
2492 colour = colour_join_rgb(
2493 (1 - c) * (1 - k) * 255,
2494 (1 - m) * (1 - k) * 255,
2495 (1 - y) * (1 - k) * 255);
2496 } else {
2497 while (len != 0 && *p == ' ') {
2498 p++;
2499 len--;
2500 }
2501 while (len != 0 && p[len - 1] == ' ')
2502 len--;
2503 copy = xstrndup(p, len);
2504 colour = colour_byname(copy);
2505 free(copy);
2506 }
2507 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour));
2508 return (colour);
2509 }
2510
2511 /* Reply to a colour request. */
2512 static void
2513 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2514 {
2515 u_char r, g, b;
2516 const char *end;
2517
2518 if (c != -1)
2519 c = colour_force_rgb(c);
2520 if (c == -1)
2521 return;
2522 colour_split_rgb(c, &r, &g, &b);
2523
2524 if (ictx->input_end == INPUT_END_BEL)
2525 end = "\007";
2526 else
2527 end = "\033\\";
2528 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2529 n, r, r, g, g, b, b, end);
2530 }
2531
2532 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2533 static void
2534 input_osc_4(struct input_ctx *ictx, const char *p)
2535 {
2536 char *copy, *s, *next = NULL;
2537 long idx;
2538 int c, bad = 0, redraw = 0;
2539
2540 copy = s = xstrdup(p);
2541 while (s != NULL && *s != '\0') {
2542 idx = strtol(s, &next, 10);
2543 if (*next++ != ';') {
2544 bad = 1;
2545 break;
2546 }
2547 if (idx < 0 || idx >= 256) {
2548 bad = 1;
2549 break;
2550 }
2551
2552 s = strsep(&next, ";");
2553 if (strcmp(s, "?") == 0) {
2554 c = colour_palette_get(ictx->palette, idx);
2555 if (c != -1)
2556 input_osc_colour_reply(ictx, 4, c);
2557 continue;
2558 }
2559 if ((c = input_osc_parse_colour(s)) == -1) {
2560 s = next;
2561 continue;
2562 }
2563 if (colour_palette_set(ictx->palette, idx, c))
2564 redraw = 1;
2565 s = next;
2566 }
2567 if (bad)
2568 log_debug("bad OSC 4: %s", p);
2569 if (redraw)
2570 screen_write_fullredraw(&ictx->ctx);
2571 free(copy);
2572 }
2573
2574 /* Handle the OSC 8 sequence for embedding hyperlinks. */
2575 static void
2576 input_osc_8(struct input_ctx *ictx, const char *p)
2577 {
2578 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2579 struct grid_cell *gc = &ictx->cell.cell;
2580 const char *start, *end, *uri;
2581 char *id = NULL;
2582
2583 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
2584 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2585 if (id != NULL)
2586 goto bad;
2587 id = xstrndup(start + 3, end - start - 3);
2588 }
2589
2590 /* The first ; is the end of parameters and start of the URI. */
2591 if (*end == ';')
2592 break;
2593 }
2594 if (end == NULL || *end != ';')
2595 goto bad;
2596 uri = end + 1;
2597 if (*uri == '\0') {
2598 gc->link = 0;
2599 free(id);
2600 return;
2601 }
2602 gc->link = hyperlinks_put(hl, uri, id);
2603 if (id == NULL)
2604 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2605 else
2606 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2607 free(id);
2608 return;
2609
2610 bad:
2611 log_debug("bad OSC 8 %s", p);
2612 free(id);
2613 }
2614
2615 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2616 static void
2617 input_osc_10(struct input_ctx *ictx, const char *p)
2618 {
2619 struct window_pane *wp = ictx->wp;
2620 struct grid_cell defaults;
2621 int c;
2622
2623 if (strcmp(p, "?") == 0) {
2624 if (wp != NULL) {
2625 tty_default_colours(&defaults, wp);
2626 input_osc_colour_reply(ictx, 10, defaults.fg);
2627 }
2628 return;
2629 }
2630
2631 if ((c = input_osc_parse_colour(p)) == -1) {
2632 log_debug("bad OSC 10: %s", p);
2633 return;
2634 }
2635 if (ictx->palette != NULL) {
2636 ictx->palette->fg = c;
2637 if (wp != NULL)
2638 wp->flags |= PANE_STYLECHANGED;
2639 screen_write_fullredraw(&ictx->ctx);
2640 }
2641 }
2642
2643 /* Handle the OSC 110 sequence for resetting foreground colour. */
2644 static void
2645 input_osc_110(struct input_ctx *ictx, const char *p)
2646 {
2647 struct window_pane *wp = ictx->wp;
2648
2649 if (*p != '\0')
2650 return;
2651 if (ictx->palette != NULL) {
2652 ictx->palette->fg = 8;
2653 if (wp != NULL)
2654 wp->flags |= PANE_STYLECHANGED;
2655 screen_write_fullredraw(&ictx->ctx);
2656 }
2657 }
2658
2659 /* Handle the OSC 11 sequence for setting and querying background colour. */
2660 static void
2661 input_osc_11(struct input_ctx *ictx, const char *p)
2662 {
2663 struct window_pane *wp = ictx->wp;
2664 struct grid_cell defaults;
2665 int c;
2666
2667 if (strcmp(p, "?") == 0) {
2668 if (wp != NULL) {
2669 tty_default_colours(&defaults, wp);
2670 input_osc_colour_reply(ictx, 11, defaults.bg);
2671 }
2672 return;
2673 }
2674
2675 if ((c = input_osc_parse_colour(p)) == -1) {
2676 log_debug("bad OSC 11: %s", p);
2677 return;
2678 }
2679 if (ictx->palette != NULL) {
2680 ictx->palette->bg = c;
2681 if (wp != NULL)
2682 wp->flags |= PANE_STYLECHANGED;
2683 screen_write_fullredraw(&ictx->ctx);
2684 }
2685 }
2686
2687 /* Handle the OSC 111 sequence for resetting background colour. */
2688 static void
2689 input_osc_111(struct input_ctx *ictx, const char *p)
2690 {
2691 struct window_pane *wp = ictx->wp;
2692
2693 if (*p != '\0')
2694 return;
2695 if (ictx->palette != NULL) {
2696 ictx->palette->bg = 8;
2697 if (wp != NULL)
2698 wp->flags |= PANE_STYLECHANGED;
2699 screen_write_fullredraw(&ictx->ctx);
2700 }
2701 }
2702
2703 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2704 static void
2705 input_osc_12(struct input_ctx *ictx, const char *p)
2706 {
2707 struct window_pane *wp = ictx->wp;
2708 int c;
2709
2710 if (strcmp(p, "?") == 0) {
2711 if (wp != NULL) {
2712 c = ictx->ctx.s->ccolour;
2713 if (c == -1)
2714 c = ictx->ctx.s->default_ccolour;
2715 input_osc_colour_reply(ictx, 12, c);
2716 }
2717 return;
2718 }
2719
2720 if ((c = input_osc_parse_colour(p)) == -1) {
2721 log_debug("bad OSC 12: %s", p);
2722 return;
2723 }
2724 screen_set_cursor_colour(ictx->ctx.s, c);
2725 }
2726
2727 /* Handle the OSC 112 sequence for resetting cursor colour. */
2728 static void
2729 input_osc_112(struct input_ctx *ictx, const char *p)
2730 {
2731 if (*p == '\0') /* no arguments allowed */
2732 screen_set_cursor_colour(ictx->ctx.s, -1);
2733 }
2734
2735
2736 /* Handle the OSC 52 sequence for setting the clipboard. */
2737 static void
2738 input_osc_52(struct input_ctx *ictx, const char *p)
2739 {
2740 struct window_pane *wp = ictx->wp;
2741 char *end;
2742 const char *buf = NULL;
2743 size_t len = 0;
2744 u_char *out;
2745 int outlen, state;
2746 struct screen_write_ctx ctx;
2747 struct paste_buffer *pb;
2748 const char* allow = "cpqs01234567";
2749 char flags[sizeof "cpqs01234567"] = "";
2750 u_int i, j = 0;
2751
2752 if (wp == NULL)
2753 return;
2754 state = options_get_number(global_options, "set-clipboard");
2755 if (state != 2)
2756 return;
2757
2758 if ((end = strchr(p, ';')) == NULL)
2759 return;
2760 end++;
2761 if (*end == '\0')
2762 return;
2763 log_debug("%s: %s", __func__, end);
2764
2765 for (i = 0; p + i != end; i++) {
2766 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2767 flags[j++] = p[i];
2768 }
2769 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2770
2771 if (strcmp(end, "?") == 0) {
2772 if ((pb = paste_get_top(NULL)) != NULL)
2773 buf = paste_buffer_data(pb, &len);
2774 if (ictx->input_end == INPUT_END_BEL)
2775 input_reply_clipboard(ictx->event, buf, len, "\007");
2776 else
2777 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2778 return;
2779 }
2780
2781 len = (strlen(end) / 4) * 3;
2782 if (len == 0)
2783 return;
2784
2785 out = xmalloc(len);
2786 if ((outlen = b64_pton(end, out, len)) == -1) {
2787 free(out);
2788 return;
2789 }
2790
2791 screen_write_start_pane(&ctx, wp, NULL);
2792 screen_write_setselection(&ctx, flags, out, outlen);
2793 screen_write_stop(&ctx);
2794 notify_pane("pane-set-clipboard", wp);
2795
2796 paste_add(NULL, out, outlen);
2797 }
2798
2799 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2800 static void
2801 input_osc_104(struct input_ctx *ictx, const char *p)
2802 {
2803 char *copy, *s;
2804 long idx;
2805 int bad = 0, redraw = 0;
2806
2807 if (*p == '\0') {
2808 colour_palette_clear(ictx->palette);
2809 screen_write_fullredraw(&ictx->ctx);
2810 return;
2811 }
2812
2813 copy = s = xstrdup(p);
2814 while (*s != '\0') {
2815 idx = strtol(s, &s, 10);
2816 if (*s != '\0' && *s != ';') {
2817 bad = 1;
2818 break;
2819 }
2820 if (idx < 0 || idx >= 256) {
2821 bad = 1;
2822 break;
2823 }
2824 if (colour_palette_set(ictx->palette, idx, -1))
2825 redraw = 1;
2826 if (*s == ';')
2827 s++;
2828 }
2829 if (bad)
2830 log_debug("bad OSC 104: %s", p);
2831 if (redraw)
2832 screen_write_fullredraw(&ictx->ctx);
2833 free(copy);
2834 }
2835
2836 void
2837 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2838 const char *end)
2839 {
2840 char *out = NULL;
2841 size_t outlen = 0;
2842
2843 if (buf != NULL && len != 0) {
2844 outlen = 4 * ((len + 2) / 3) + 1;
2845 out = xmalloc(outlen);
2846 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2847 free(out);
2848 return;
2849 }
2850 }
2851
2852 bufferevent_write(bev, "\033]52;;", 6);
2853 if (outlen != 0)
2854 bufferevent_write(bev, out, outlen);
2855 bufferevent_write(bev, end, strlen(end));
2856 free(out);
2857 }
tmux -- terminal multiplexer similar to GNU Screen