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Merge branch 'obsd-master'
[tmux.git] / input.c
blobce8b5bcd7eeb2cee361f4419505011423b6190ff
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 struct utf8_data last;
113
114 int flags;
115 #define INPUT_DISCARD 0x1
116 #define INPUT_LAST 0x2
117
118 const struct input_state *state;
119
120 struct event timer;
121
122 /*
123 * All input received since we were last in the ground state. Sent to
124 * control clients on connection.
125 */
126 struct evbuffer *since_ground;
127 };
128
129 /* Helper functions. */
130 struct input_transition;
131 static int input_split(struct input_ctx *);
132 static int input_get(struct input_ctx *, u_int, int, int);
133 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...);
134 static void input_set_state(struct input_ctx *,
135 const struct input_transition *);
136 static void input_reset_cell(struct input_ctx *);
137
138 static void input_osc_4(struct input_ctx *, const char *);
139 static void input_osc_8(struct input_ctx *, const char *);
140 static void input_osc_10(struct input_ctx *, const char *);
141 static void input_osc_11(struct input_ctx *, const char *);
142 static void input_osc_12(struct input_ctx *, const char *);
143 static void input_osc_52(struct input_ctx *, const char *);
144 static void input_osc_104(struct input_ctx *, const char *);
145 static void input_osc_110(struct input_ctx *, const char *);
146 static void input_osc_111(struct input_ctx *, const char *);
147 static void input_osc_112(struct input_ctx *, const char *);
148 static void input_osc_133(struct input_ctx *, const char *);
149
150 /* Transition entry/exit handlers. */
151 static void input_clear(struct input_ctx *);
152 static void input_ground(struct input_ctx *);
153 static void input_enter_dcs(struct input_ctx *);
154 static void input_enter_osc(struct input_ctx *);
155 static void input_exit_osc(struct input_ctx *);
156 static void input_enter_apc(struct input_ctx *);
157 static void input_exit_apc(struct input_ctx *);
158 static void input_enter_rename(struct input_ctx *);
159 static void input_exit_rename(struct input_ctx *);
160
161 /* Input state handlers. */
162 static int input_print(struct input_ctx *);
163 static int input_intermediate(struct input_ctx *);
164 static int input_parameter(struct input_ctx *);
165 static int input_input(struct input_ctx *);
166 static int input_c0_dispatch(struct input_ctx *);
167 static int input_esc_dispatch(struct input_ctx *);
168 static int input_csi_dispatch(struct input_ctx *);
169 static void input_csi_dispatch_rm(struct input_ctx *);
170 static void input_csi_dispatch_rm_private(struct input_ctx *);
171 static void input_csi_dispatch_sm(struct input_ctx *);
172 static void input_csi_dispatch_sm_private(struct input_ctx *);
173 static void input_csi_dispatch_sm_graphics(struct input_ctx *);
174 static void input_csi_dispatch_winops(struct input_ctx *);
175 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
176 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
177 static void input_csi_dispatch_sgr(struct input_ctx *);
178 static int input_dcs_dispatch(struct input_ctx *);
179 static int input_top_bit_set(struct input_ctx *);
180 static int input_end_bel(struct input_ctx *);
181
182 /* Command table comparison function. */
183 static int input_table_compare(const void *, const void *);
184
185 /* Command table entry. */
186 struct input_table_entry {
187 int ch;
188 const char *interm;
189 int type;
190 };
191
192 /* Escape commands. */
193 enum input_esc_type {
194 INPUT_ESC_DECALN,
195 INPUT_ESC_DECKPAM,
196 INPUT_ESC_DECKPNM,
197 INPUT_ESC_DECRC,
198 INPUT_ESC_DECSC,
199 INPUT_ESC_HTS,
200 INPUT_ESC_IND,
201 INPUT_ESC_NEL,
202 INPUT_ESC_RI,
203 INPUT_ESC_RIS,
204 INPUT_ESC_SCSG0_OFF,
205 INPUT_ESC_SCSG0_ON,
206 INPUT_ESC_SCSG1_OFF,
207 INPUT_ESC_SCSG1_ON,
208 INPUT_ESC_ST
209 };
210
211 /* Escape command table. */
212 static const struct input_table_entry input_esc_table[] = {
213 { '0', "(", INPUT_ESC_SCSG0_ON },
214 { '0', ")", INPUT_ESC_SCSG1_ON },
215 { '7', "", INPUT_ESC_DECSC },
216 { '8', "", INPUT_ESC_DECRC },
217 { '8', "#", INPUT_ESC_DECALN },
218 { '=', "", INPUT_ESC_DECKPAM },
219 { '>', "", INPUT_ESC_DECKPNM },
220 { 'B', "(", INPUT_ESC_SCSG0_OFF },
221 { 'B', ")", INPUT_ESC_SCSG1_OFF },
222 { 'D', "", INPUT_ESC_IND },
223 { 'E', "", INPUT_ESC_NEL },
224 { 'H', "", INPUT_ESC_HTS },
225 { 'M', "", INPUT_ESC_RI },
226 { '\\', "", INPUT_ESC_ST },
227 { 'c', "", INPUT_ESC_RIS },
228 };
229
230 /* Control (CSI) commands. */
231 enum input_csi_type {
232 INPUT_CSI_CBT,
233 INPUT_CSI_CNL,
234 INPUT_CSI_CPL,
235 INPUT_CSI_CUB,
236 INPUT_CSI_CUD,
237 INPUT_CSI_CUF,
238 INPUT_CSI_CUP,
239 INPUT_CSI_CUU,
240 INPUT_CSI_DA,
241 INPUT_CSI_DA_TWO,
242 INPUT_CSI_DCH,
243 INPUT_CSI_DECSCUSR,
244 INPUT_CSI_DECSTBM,
245 INPUT_CSI_DL,
246 INPUT_CSI_DSR,
247 INPUT_CSI_ECH,
248 INPUT_CSI_ED,
249 INPUT_CSI_EL,
250 INPUT_CSI_HPA,
251 INPUT_CSI_ICH,
252 INPUT_CSI_IL,
253 INPUT_CSI_MODOFF,
254 INPUT_CSI_MODSET,
255 INPUT_CSI_RCP,
256 INPUT_CSI_REP,
257 INPUT_CSI_RM,
258 INPUT_CSI_RM_PRIVATE,
259 INPUT_CSI_SCP,
260 INPUT_CSI_SD,
261 INPUT_CSI_SGR,
262 INPUT_CSI_SM,
263 INPUT_CSI_SM_PRIVATE,
264 INPUT_CSI_SM_GRAPHICS,
265 INPUT_CSI_SU,
266 INPUT_CSI_TBC,
267 INPUT_CSI_VPA,
268 INPUT_CSI_WINOPS,
269 INPUT_CSI_XDA
270 };
271
272 /* Control (CSI) command table. */
273 static const struct input_table_entry input_csi_table[] = {
274 { '@', "", INPUT_CSI_ICH },
275 { 'A', "", INPUT_CSI_CUU },
276 { 'B', "", INPUT_CSI_CUD },
277 { 'C', "", INPUT_CSI_CUF },
278 { 'D', "", INPUT_CSI_CUB },
279 { 'E', "", INPUT_CSI_CNL },
280 { 'F', "", INPUT_CSI_CPL },
281 { 'G', "", INPUT_CSI_HPA },
282 { 'H', "", INPUT_CSI_CUP },
283 { 'J', "", INPUT_CSI_ED },
284 { 'K', "", INPUT_CSI_EL },
285 { 'L', "", INPUT_CSI_IL },
286 { 'M', "", INPUT_CSI_DL },
287 { 'P', "", INPUT_CSI_DCH },
288 { 'S', "", INPUT_CSI_SU },
289 { 'S', "?", INPUT_CSI_SM_GRAPHICS },
290 { 'T', "", INPUT_CSI_SD },
291 { 'X', "", INPUT_CSI_ECH },
292 { 'Z', "", INPUT_CSI_CBT },
293 { '`', "", INPUT_CSI_HPA },
294 { 'b', "", INPUT_CSI_REP },
295 { 'c', "", INPUT_CSI_DA },
296 { 'c', ">", INPUT_CSI_DA_TWO },
297 { 'd', "", INPUT_CSI_VPA },
298 { 'f', "", INPUT_CSI_CUP },
299 { 'g', "", INPUT_CSI_TBC },
300 { 'h', "", INPUT_CSI_SM },
301 { 'h', "?", INPUT_CSI_SM_PRIVATE },
302 { 'l', "", INPUT_CSI_RM },
303 { 'l', "?", INPUT_CSI_RM_PRIVATE },
304 { 'm', "", INPUT_CSI_SGR },
305 { 'm', ">", INPUT_CSI_MODSET },
306 { 'n', "", INPUT_CSI_DSR },
307 { 'n', ">", INPUT_CSI_MODOFF },
308 { 'q', " ", INPUT_CSI_DECSCUSR },
309 { 'q', ">", INPUT_CSI_XDA },
310 { 'r', "", INPUT_CSI_DECSTBM },
311 { 's', "", INPUT_CSI_SCP },
312 { 't', "", INPUT_CSI_WINOPS },
313 { 'u', "", INPUT_CSI_RCP }
314 };
315
316 /* Input transition. */
317 struct input_transition {
318 int first;
319 int last;
320
321 int (*handler)(struct input_ctx *);
322 const struct input_state *state;
323 };
324
325 /* Input state. */
326 struct input_state {
327 const char *name;
328 void (*enter)(struct input_ctx *);
329 void (*exit)(struct input_ctx *);
330 const struct input_transition *transitions;
331 };
332
333 /* State transitions available from all states. */
334 #define INPUT_STATE_ANYWHERE \
335 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
336 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
337 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
338
339 /* Forward declarations of state tables. */
340 static const struct input_transition input_state_ground_table[];
341 static const struct input_transition input_state_esc_enter_table[];
342 static const struct input_transition input_state_esc_intermediate_table[];
343 static const struct input_transition input_state_csi_enter_table[];
344 static const struct input_transition input_state_csi_parameter_table[];
345 static const struct input_transition input_state_csi_intermediate_table[];
346 static const struct input_transition input_state_csi_ignore_table[];
347 static const struct input_transition input_state_dcs_enter_table[];
348 static const struct input_transition input_state_dcs_parameter_table[];
349 static const struct input_transition input_state_dcs_intermediate_table[];
350 static const struct input_transition input_state_dcs_handler_table[];
351 static const struct input_transition input_state_dcs_escape_table[];
352 static const struct input_transition input_state_dcs_ignore_table[];
353 static const struct input_transition input_state_osc_string_table[];
354 static const struct input_transition input_state_apc_string_table[];
355 static const struct input_transition input_state_rename_string_table[];
356 static const struct input_transition input_state_consume_st_table[];
357
358 /* ground state definition. */
359 static const struct input_state input_state_ground = {
360 "ground",
361 input_ground, NULL,
362 input_state_ground_table
363 };
364
365 /* esc_enter state definition. */
366 static const struct input_state input_state_esc_enter = {
367 "esc_enter",
368 input_clear, NULL,
369 input_state_esc_enter_table
370 };
371
372 /* esc_intermediate state definition. */
373 static const struct input_state input_state_esc_intermediate = {
374 "esc_intermediate",
375 NULL, NULL,
376 input_state_esc_intermediate_table
377 };
378
379 /* csi_enter state definition. */
380 static const struct input_state input_state_csi_enter = {
381 "csi_enter",
382 input_clear, NULL,
383 input_state_csi_enter_table
384 };
385
386 /* csi_parameter state definition. */
387 static const struct input_state input_state_csi_parameter = {
388 "csi_parameter",
389 NULL, NULL,
390 input_state_csi_parameter_table
391 };
392
393 /* csi_intermediate state definition. */
394 static const struct input_state input_state_csi_intermediate = {
395 "csi_intermediate",
396 NULL, NULL,
397 input_state_csi_intermediate_table
398 };
399
400 /* csi_ignore state definition. */
401 static const struct input_state input_state_csi_ignore = {
402 "csi_ignore",
403 NULL, NULL,
404 input_state_csi_ignore_table
405 };
406
407 /* dcs_enter state definition. */
408 static const struct input_state input_state_dcs_enter = {
409 "dcs_enter",
410 input_enter_dcs, NULL,
411 input_state_dcs_enter_table
412 };
413
414 /* dcs_parameter state definition. */
415 static const struct input_state input_state_dcs_parameter = {
416 "dcs_parameter",
417 NULL, NULL,
418 input_state_dcs_parameter_table
419 };
420
421 /* dcs_intermediate state definition. */
422 static const struct input_state input_state_dcs_intermediate = {
423 "dcs_intermediate",
424 NULL, NULL,
425 input_state_dcs_intermediate_table
426 };
427
428 /* dcs_handler state definition. */
429 static const struct input_state input_state_dcs_handler = {
430 "dcs_handler",
431 NULL, NULL,
432 input_state_dcs_handler_table
433 };
434
435 /* dcs_escape state definition. */
436 static const struct input_state input_state_dcs_escape = {
437 "dcs_escape",
438 NULL, NULL,
439 input_state_dcs_escape_table
440 };
441
442 /* dcs_ignore state definition. */
443 static const struct input_state input_state_dcs_ignore = {
444 "dcs_ignore",
445 NULL, NULL,
446 input_state_dcs_ignore_table
447 };
448
449 /* osc_string state definition. */
450 static const struct input_state input_state_osc_string = {
451 "osc_string",
452 input_enter_osc, input_exit_osc,
453 input_state_osc_string_table
454 };
455
456 /* apc_string state definition. */
457 static const struct input_state input_state_apc_string = {
458 "apc_string",
459 input_enter_apc, input_exit_apc,
460 input_state_apc_string_table
461 };
462
463 /* rename_string state definition. */
464 static const struct input_state input_state_rename_string = {
465 "rename_string",
466 input_enter_rename, input_exit_rename,
467 input_state_rename_string_table
468 };
469
470 /* consume_st state definition. */
471 static const struct input_state input_state_consume_st = {
472 "consume_st",
473 input_enter_rename, NULL, /* rename also waits for ST */
474 input_state_consume_st_table
475 };
476
477 /* ground state table. */
478 static const struct input_transition input_state_ground_table[] = {
479 INPUT_STATE_ANYWHERE,
480
481 { 0x00, 0x17, input_c0_dispatch, NULL },
482 { 0x19, 0x19, input_c0_dispatch, NULL },
483 { 0x1c, 0x1f, input_c0_dispatch, NULL },
484 { 0x20, 0x7e, input_print, NULL },
485 { 0x7f, 0x7f, NULL, NULL },
486 { 0x80, 0xff, input_top_bit_set, NULL },
487
488 { -1, -1, NULL, NULL }
489 };
490
491 /* esc_enter state table. */
492 static const struct input_transition input_state_esc_enter_table[] = {
493 INPUT_STATE_ANYWHERE,
494
495 { 0x00, 0x17, input_c0_dispatch, NULL },
496 { 0x19, 0x19, input_c0_dispatch, NULL },
497 { 0x1c, 0x1f, input_c0_dispatch, NULL },
498 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
499 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
500 { 0x50, 0x50, NULL, &input_state_dcs_enter },
501 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
502 { 0x58, 0x58, NULL, &input_state_consume_st },
503 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
504 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
505 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
506 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
507 { 0x5d, 0x5d, NULL, &input_state_osc_string },
508 { 0x5e, 0x5e, NULL, &input_state_consume_st },
509 { 0x5f, 0x5f, NULL, &input_state_apc_string },
510 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
511 { 0x6b, 0x6b, NULL, &input_state_rename_string },
512 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
513 { 0x7f, 0xff, NULL, NULL },
514
515 { -1, -1, NULL, NULL }
516 };
517
518 /* esc_intermediate state table. */
519 static const struct input_transition input_state_esc_intermediate_table[] = {
520 INPUT_STATE_ANYWHERE,
521
522 { 0x00, 0x17, input_c0_dispatch, NULL },
523 { 0x19, 0x19, input_c0_dispatch, NULL },
524 { 0x1c, 0x1f, input_c0_dispatch, NULL },
525 { 0x20, 0x2f, input_intermediate, NULL },
526 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
527 { 0x7f, 0xff, NULL, NULL },
528
529 { -1, -1, NULL, NULL }
530 };
531
532 /* csi_enter state table. */
533 static const struct input_transition input_state_csi_enter_table[] = {
534 INPUT_STATE_ANYWHERE,
535
536 { 0x00, 0x17, input_c0_dispatch, NULL },
537 { 0x19, 0x19, input_c0_dispatch, NULL },
538 { 0x1c, 0x1f, input_c0_dispatch, NULL },
539 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
540 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
541 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
542 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
543 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
544 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
545 { 0x7f, 0xff, NULL, NULL },
546
547 { -1, -1, NULL, NULL }
548 };
549
550 /* csi_parameter state table. */
551 static const struct input_transition input_state_csi_parameter_table[] = {
552 INPUT_STATE_ANYWHERE,
553
554 { 0x00, 0x17, input_c0_dispatch, NULL },
555 { 0x19, 0x19, input_c0_dispatch, NULL },
556 { 0x1c, 0x1f, input_c0_dispatch, NULL },
557 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
558 { 0x30, 0x39, input_parameter, NULL },
559 { 0x3a, 0x3a, input_parameter, NULL },
560 { 0x3b, 0x3b, input_parameter, NULL },
561 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
562 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
563 { 0x7f, 0xff, NULL, NULL },
564
565 { -1, -1, NULL, NULL }
566 };
567
568 /* csi_intermediate state table. */
569 static const struct input_transition input_state_csi_intermediate_table[] = {
570 INPUT_STATE_ANYWHERE,
571
572 { 0x00, 0x17, input_c0_dispatch, NULL },
573 { 0x19, 0x19, input_c0_dispatch, NULL },
574 { 0x1c, 0x1f, input_c0_dispatch, NULL },
575 { 0x20, 0x2f, input_intermediate, NULL },
576 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
577 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
578 { 0x7f, 0xff, NULL, NULL },
579
580 { -1, -1, NULL, NULL }
581 };
582
583 /* csi_ignore state table. */
584 static const struct input_transition input_state_csi_ignore_table[] = {
585 INPUT_STATE_ANYWHERE,
586
587 { 0x00, 0x17, input_c0_dispatch, NULL },
588 { 0x19, 0x19, input_c0_dispatch, NULL },
589 { 0x1c, 0x1f, input_c0_dispatch, NULL },
590 { 0x20, 0x3f, NULL, NULL },
591 { 0x40, 0x7e, NULL, &input_state_ground },
592 { 0x7f, 0xff, NULL, NULL },
593
594 { -1, -1, NULL, NULL }
595 };
596
597 /* dcs_enter state table. */
598 static const struct input_transition input_state_dcs_enter_table[] = {
599 INPUT_STATE_ANYWHERE,
600
601 { 0x00, 0x17, NULL, NULL },
602 { 0x19, 0x19, NULL, NULL },
603 { 0x1c, 0x1f, NULL, NULL },
604 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
605 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
606 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
607 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
608 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
609 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
610 { 0x7f, 0xff, NULL, NULL },
611
612 { -1, -1, NULL, NULL }
613 };
614
615 /* dcs_parameter state table. */
616 static const struct input_transition input_state_dcs_parameter_table[] = {
617 INPUT_STATE_ANYWHERE,
618
619 { 0x00, 0x17, NULL, NULL },
620 { 0x19, 0x19, NULL, NULL },
621 { 0x1c, 0x1f, NULL, NULL },
622 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
623 { 0x30, 0x39, input_parameter, NULL },
624 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
625 { 0x3b, 0x3b, input_parameter, NULL },
626 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
627 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
628 { 0x7f, 0xff, NULL, NULL },
629
630 { -1, -1, NULL, NULL }
631 };
632
633 /* dcs_intermediate state table. */
634 static const struct input_transition input_state_dcs_intermediate_table[] = {
635 INPUT_STATE_ANYWHERE,
636
637 { 0x00, 0x17, NULL, NULL },
638 { 0x19, 0x19, NULL, NULL },
639 { 0x1c, 0x1f, NULL, NULL },
640 { 0x20, 0x2f, input_intermediate, NULL },
641 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
642 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
643 { 0x7f, 0xff, NULL, NULL },
644
645 { -1, -1, NULL, NULL }
646 };
647
648 /* dcs_handler state table. */
649 static const struct input_transition input_state_dcs_handler_table[] = {
650 /* No INPUT_STATE_ANYWHERE */
651
652 { 0x00, 0x1a, input_input, NULL },
653 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
654 { 0x1c, 0xff, input_input, NULL },
655
656 { -1, -1, NULL, NULL }
657 };
658
659 /* dcs_escape state table. */
660 static const struct input_transition input_state_dcs_escape_table[] = {
661 /* No INPUT_STATE_ANYWHERE */
662
663 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
664 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
665 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
666
667 { -1, -1, NULL, NULL }
668 };
669
670 /* dcs_ignore state table. */
671 static const struct input_transition input_state_dcs_ignore_table[] = {
672 INPUT_STATE_ANYWHERE,
673
674 { 0x00, 0x17, NULL, NULL },
675 { 0x19, 0x19, NULL, NULL },
676 { 0x1c, 0x1f, NULL, NULL },
677 { 0x20, 0xff, NULL, NULL },
678
679 { -1, -1, NULL, NULL }
680 };
681
682 /* osc_string state table. */
683 static const struct input_transition input_state_osc_string_table[] = {
684 INPUT_STATE_ANYWHERE,
685
686 { 0x00, 0x06, NULL, NULL },
687 { 0x07, 0x07, input_end_bel, &input_state_ground },
688 { 0x08, 0x17, NULL, NULL },
689 { 0x19, 0x19, NULL, NULL },
690 { 0x1c, 0x1f, NULL, NULL },
691 { 0x20, 0xff, input_input, NULL },
692
693 { -1, -1, NULL, NULL }
694 };
695
696 /* apc_string state table. */
697 static const struct input_transition input_state_apc_string_table[] = {
698 INPUT_STATE_ANYWHERE,
699
700 { 0x00, 0x17, NULL, NULL },
701 { 0x19, 0x19, NULL, NULL },
702 { 0x1c, 0x1f, NULL, NULL },
703 { 0x20, 0xff, input_input, NULL },
704
705 { -1, -1, NULL, NULL }
706 };
707
708 /* rename_string state table. */
709 static const struct input_transition input_state_rename_string_table[] = {
710 INPUT_STATE_ANYWHERE,
711
712 { 0x00, 0x17, NULL, NULL },
713 { 0x19, 0x19, NULL, NULL },
714 { 0x1c, 0x1f, NULL, NULL },
715 { 0x20, 0xff, input_input, NULL },
716
717 { -1, -1, NULL, NULL }
718 };
719
720 /* consume_st state table. */
721 static const struct input_transition input_state_consume_st_table[] = {
722 INPUT_STATE_ANYWHERE,
723
724 { 0x00, 0x17, NULL, NULL },
725 { 0x19, 0x19, NULL, NULL },
726 { 0x1c, 0x1f, NULL, NULL },
727 { 0x20, 0xff, NULL, NULL },
728
729 { -1, -1, NULL, NULL }
730 };
731
732 /* Input table compare. */
733 static int
734 input_table_compare(const void *key, const void *value)
735 {
736 const struct input_ctx *ictx = key;
737 const struct input_table_entry *entry = value;
738
739 if (ictx->ch != entry->ch)
740 return (ictx->ch - entry->ch);
741 return (strcmp(ictx->interm_buf, entry->interm));
742 }
743
744 /*
745 * Timer - if this expires then have been waiting for a terminator for too
746 * long, so reset to ground.
747 */
748 static void
749 input_timer_callback(__unused int fd, __unused short events, void *arg)
750 {
751 struct input_ctx *ictx = arg;
752
753 log_debug("%s: %s expired" , __func__, ictx->state->name);
754 input_reset(ictx, 0);
755 }
756
757 /* Start the timer. */
758 static void
759 input_start_timer(struct input_ctx *ictx)
760 {
761 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
762
763 event_del(&ictx->timer);
764 event_add(&ictx->timer, &tv);
765 }
766
767 /* Reset cell state to default. */
768 static void
769 input_reset_cell(struct input_ctx *ictx)
770 {
771 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
772 ictx->cell.set = 0;
773 ictx->cell.g0set = ictx->cell.g1set = 0;
774
775 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
776 ictx->old_cx = 0;
777 ictx->old_cy = 0;
778 }
779
780 /* Save screen state. */
781 static void
782 input_save_state(struct input_ctx *ictx)
783 {
784 struct screen_write_ctx *sctx = &ictx->ctx;
785 struct screen *s = sctx->s;
786
787 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
788 ictx->old_cx = s->cx;
789 ictx->old_cy = s->cy;
790 ictx->old_mode = s->mode;
791 }
792
793 /* Restore screen state. */
794 static void
795 input_restore_state(struct input_ctx *ictx)
796 {
797 struct screen_write_ctx *sctx = &ictx->ctx;
798
799 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
800 if (ictx->old_mode & MODE_ORIGIN)
801 screen_write_mode_set(sctx, MODE_ORIGIN);
802 else
803 screen_write_mode_clear(sctx, MODE_ORIGIN);
804 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
805 }
806
807 /* Initialise input parser. */
808 struct input_ctx *
809 input_init(struct window_pane *wp, struct bufferevent *bev,
810 struct colour_palette *palette)
811 {
812 struct input_ctx *ictx;
813
814 ictx = xcalloc(1, sizeof *ictx);
815 ictx->wp = wp;
816 ictx->event = bev;
817 ictx->palette = palette;
818
819 ictx->input_space = INPUT_BUF_START;
820 ictx->input_buf = xmalloc(INPUT_BUF_START);
821
822 ictx->since_ground = evbuffer_new();
823 if (ictx->since_ground == NULL)
824 fatalx("out of memory");
825
826 evtimer_set(&ictx->timer, input_timer_callback, ictx);
827
828 input_reset(ictx, 0);
829 return (ictx);
830 }
831
832 /* Destroy input parser. */
833 void
834 input_free(struct input_ctx *ictx)
835 {
836 u_int i;
837
838 for (i = 0; i < ictx->param_list_len; i++) {
839 if (ictx->param_list[i].type == INPUT_STRING)
840 free(ictx->param_list[i].str);
841 }
842
843 event_del(&ictx->timer);
844
845 free(ictx->input_buf);
846 evbuffer_free(ictx->since_ground);
847
848 free(ictx);
849 }
850
851 /* Reset input state and clear screen. */
852 void
853 input_reset(struct input_ctx *ictx, int clear)
854 {
855 struct screen_write_ctx *sctx = &ictx->ctx;
856 struct window_pane *wp = ictx->wp;
857
858 input_reset_cell(ictx);
859
860 if (clear && wp != NULL) {
861 if (TAILQ_EMPTY(&wp->modes))
862 screen_write_start_pane(sctx, wp, &wp->base);
863 else
864 screen_write_start(sctx, &wp->base);
865 screen_write_reset(sctx);
866 screen_write_stop(sctx);
867 }
868
869 input_clear(ictx);
870
871 ictx->state = &input_state_ground;
872 ictx->flags = 0;
873 }
874
875 /* Return pending data. */
876 struct evbuffer *
877 input_pending(struct input_ctx *ictx)
878 {
879 return (ictx->since_ground);
880 }
881
882 /* Change input state. */
883 static void
884 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
885 {
886 if (ictx->state->exit != NULL)
887 ictx->state->exit(ictx);
888 ictx->state = itr->state;
889 if (ictx->state->enter != NULL)
890 ictx->state->enter(ictx);
891 }
892
893 /* Parse data. */
894 static void
895 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
896 {
897 struct screen_write_ctx *sctx = &ictx->ctx;
898 const struct input_state *state = NULL;
899 const struct input_transition *itr = NULL;
900 size_t off = 0;
901
902 /* Parse the input. */
903 while (off < len) {
904 ictx->ch = buf[off++];
905
906 /* Find the transition. */
907 if (ictx->state != state ||
908 itr == NULL ||
909 ictx->ch < itr->first ||
910 ictx->ch > itr->last) {
911 itr = ictx->state->transitions;
912 while (itr->first != -1 && itr->last != -1) {
913 if (ictx->ch >= itr->first &&
914 ictx->ch <= itr->last)
915 break;
916 itr++;
917 }
918 if (itr->first == -1 || itr->last == -1) {
919 /* No transition? Eh? */
920 fatalx("no transition from state");
921 }
922 }
923 state = ictx->state;
924
925 /*
926 * Any state except print stops the current collection. This is
927 * an optimization to avoid checking if the attributes have
928 * changed for every character. It will stop unnecessarily for
929 * sequences that don't make a terminal change, but they should
930 * be the minority.
931 */
932 if (itr->handler != input_print)
933 screen_write_collect_end(sctx);
934
935 /*
936 * Execute the handler, if any. Don't switch state if it
937 * returns non-zero.
938 */
939 if (itr->handler != NULL && itr->handler(ictx) != 0)
940 continue;
941
942 /* And switch state, if necessary. */
943 if (itr->state != NULL)
944 input_set_state(ictx, itr);
945
946 /* If not in ground state, save input. */
947 if (ictx->state != &input_state_ground)
948 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
949 }
950 }
951
952 /* Parse input from pane. */
953 void
954 input_parse_pane(struct window_pane *wp)
955 {
956 void *new_data;
957 size_t new_size;
958
959 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
960 input_parse_buffer(wp, new_data, new_size);
961 window_pane_update_used_data(wp, &wp->offset, new_size);
962 }
963
964 /* Parse given input. */
965 void
966 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
967 {
968 struct input_ctx *ictx = wp->ictx;
969 struct screen_write_ctx *sctx = &ictx->ctx;
970
971 if (len == 0)
972 return;
973
974 window_update_activity(wp->window);
975 wp->flags |= PANE_CHANGED;
976
977 /* Flag new input while in a mode. */
978 if (!TAILQ_EMPTY(&wp->modes))
979 wp->flags |= PANE_UNSEENCHANGES;
980
981 /* NULL wp if there is a mode set as don't want to update the tty. */
982 if (TAILQ_EMPTY(&wp->modes))
983 screen_write_start_pane(sctx, wp, &wp->base);
984 else
985 screen_write_start(sctx, &wp->base);
986
987 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
988 ictx->state->name, len, (int)len, buf);
989
990 input_parse(ictx, buf, len);
991 screen_write_stop(sctx);
992 }
993
994 /* Parse given input for screen. */
995 void
996 input_parse_screen(struct input_ctx *ictx, struct screen *s,
997 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
998 {
999 struct screen_write_ctx *sctx = &ictx->ctx;
1000
1001 if (len == 0)
1002 return;
1003
1004 screen_write_start_callback(sctx, s, cb, arg);
1005 input_parse(ictx, buf, len);
1006 screen_write_stop(sctx);
1007 }
1008
1009 /* Split the parameter list (if any). */
1010 static int
1011 input_split(struct input_ctx *ictx)
1012 {
1013 const char *errstr;
1014 char *ptr, *out;
1015 struct input_param *ip;
1016 u_int i;
1017
1018 for (i = 0; i < ictx->param_list_len; i++) {
1019 if (ictx->param_list[i].type == INPUT_STRING)
1020 free(ictx->param_list[i].str);
1021 }
1022 ictx->param_list_len = 0;
1023
1024 if (ictx->param_len == 0)
1025 return (0);
1026 ip = &ictx->param_list[0];
1027
1028 ptr = ictx->param_buf;
1029 while ((out = strsep(&ptr, ";")) != NULL) {
1030 if (*out == '\0')
1031 ip->type = INPUT_MISSING;
1032 else {
1033 if (strchr(out, ':') != NULL) {
1034 ip->type = INPUT_STRING;
1035 ip->str = xstrdup(out);
1036 } else {
1037 ip->type = INPUT_NUMBER;
1038 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1039 if (errstr != NULL)
1040 return (-1);
1041 }
1042 }
1043 ip = &ictx->param_list[++ictx->param_list_len];
1044 if (ictx->param_list_len == nitems(ictx->param_list))
1045 return (-1);
1046 }
1047
1048 for (i = 0; i < ictx->param_list_len; i++) {
1049 ip = &ictx->param_list[i];
1050 if (ip->type == INPUT_MISSING)
1051 log_debug("parameter %u: missing", i);
1052 else if (ip->type == INPUT_STRING)
1053 log_debug("parameter %u: string %s", i, ip->str);
1054 else if (ip->type == INPUT_NUMBER)
1055 log_debug("parameter %u: number %d", i, ip->num);
1056 }
1057
1058 return (0);
1059 }
1060
1061 /* Get an argument or return default value. */
1062 static int
1063 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1064 {
1065 struct input_param *ip;
1066 int retval;
1067
1068 if (validx >= ictx->param_list_len)
1069 return (defval);
1070 ip = &ictx->param_list[validx];
1071 if (ip->type == INPUT_MISSING)
1072 return (defval);
1073 if (ip->type == INPUT_STRING)
1074 return (-1);
1075 retval = ip->num;
1076 if (retval < minval)
1077 return (minval);
1078 return (retval);
1079 }
1080
1081 /* Reply to terminal query. */
1082 static void
1083 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1084 {
1085 struct bufferevent *bev = ictx->event;
1086 va_list ap;
1087 char *reply;
1088
1089 if (bev == NULL)
1090 return;
1091
1092 va_start(ap, fmt);
1093 xvasprintf(&reply, fmt, ap);
1094 va_end(ap);
1095
1096 log_debug("%s: %s", __func__, reply);
1097 bufferevent_write(bev, reply, strlen(reply));
1098 free(reply);
1099 }
1100
1101 /* Clear saved state. */
1102 static void
1103 input_clear(struct input_ctx *ictx)
1104 {
1105 event_del(&ictx->timer);
1106
1107 *ictx->interm_buf = '\0';
1108 ictx->interm_len = 0;
1109
1110 *ictx->param_buf = '\0';
1111 ictx->param_len = 0;
1112
1113 *ictx->input_buf = '\0';
1114 ictx->input_len = 0;
1115
1116 ictx->input_end = INPUT_END_ST;
1117
1118 ictx->flags &= ~INPUT_DISCARD;
1119 }
1120
1121 /* Reset for ground state. */
1122 static void
1123 input_ground(struct input_ctx *ictx)
1124 {
1125 event_del(&ictx->timer);
1126 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1127
1128 if (ictx->input_space > INPUT_BUF_START) {
1129 ictx->input_space = INPUT_BUF_START;
1130 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1131 }
1132 }
1133
1134 /* Output this character to the screen. */
1135 static int
1136 input_print(struct input_ctx *ictx)
1137 {
1138 struct screen_write_ctx *sctx = &ictx->ctx;
1139 int set;
1140
1141 ictx->utf8started = 0; /* can't be valid UTF-8 */
1142
1143 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1144 if (set == 1)
1145 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1146 else
1147 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1148
1149 utf8_set(&ictx->cell.cell.data, ictx->ch);
1150 screen_write_collect_add(sctx, &ictx->cell.cell);
1151
1152 utf8_copy(&ictx->last, &ictx->cell.cell.data);
1153 ictx->flags |= INPUT_LAST;
1154
1155 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1156
1157 return (0);
1158 }
1159
1160 /* Collect intermediate string. */
1161 static int
1162 input_intermediate(struct input_ctx *ictx)
1163 {
1164 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1165 ictx->flags |= INPUT_DISCARD;
1166 else {
1167 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1168 ictx->interm_buf[ictx->interm_len] = '\0';
1169 }
1170
1171 return (0);
1172 }
1173
1174 /* Collect parameter string. */
1175 static int
1176 input_parameter(struct input_ctx *ictx)
1177 {
1178 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1179 ictx->flags |= INPUT_DISCARD;
1180 else {
1181 ictx->param_buf[ictx->param_len++] = ictx->ch;
1182 ictx->param_buf[ictx->param_len] = '\0';
1183 }
1184
1185 return (0);
1186 }
1187
1188 /* Collect input string. */
1189 static int
1190 input_input(struct input_ctx *ictx)
1191 {
1192 size_t available;
1193
1194 available = ictx->input_space;
1195 while (ictx->input_len + 1 >= available) {
1196 available *= 2;
1197 if (available > INPUT_BUF_LIMIT) {
1198 ictx->flags |= INPUT_DISCARD;
1199 return (0);
1200 }
1201 ictx->input_buf = xrealloc(ictx->input_buf, available);
1202 ictx->input_space = available;
1203 }
1204 ictx->input_buf[ictx->input_len++] = ictx->ch;
1205 ictx->input_buf[ictx->input_len] = '\0';
1206
1207 return (0);
1208 }
1209
1210 /* Execute C0 control sequence. */
1211 static int
1212 input_c0_dispatch(struct input_ctx *ictx)
1213 {
1214 struct screen_write_ctx *sctx = &ictx->ctx;
1215 struct window_pane *wp = ictx->wp;
1216 struct screen *s = sctx->s;
1217
1218 ictx->utf8started = 0; /* can't be valid UTF-8 */
1219
1220 log_debug("%s: '%c'", __func__, ictx->ch);
1221
1222 switch (ictx->ch) {
1223 case '\000': /* NUL */
1224 break;
1225 case '\007': /* BEL */
1226 if (wp != NULL)
1227 alerts_queue(wp->window, WINDOW_BELL);
1228 break;
1229 case '\010': /* BS */
1230 screen_write_backspace(sctx);
1231 break;
1232 case '\011': /* HT */
1233 /* Don't tab beyond the end of the line. */
1234 if (s->cx >= screen_size_x(s) - 1)
1235 break;
1236
1237 /* Find the next tab point, or use the last column if none. */
1238 do {
1239 s->cx++;
1240 if (bit_test(s->tabs, s->cx))
1241 break;
1242 } while (s->cx < screen_size_x(s) - 1);
1243 break;
1244 case '\012': /* LF */
1245 case '\013': /* VT */
1246 case '\014': /* FF */
1247 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1248 if (s->mode & MODE_CRLF)
1249 screen_write_carriagereturn(sctx);
1250 break;
1251 case '\015': /* CR */
1252 screen_write_carriagereturn(sctx);
1253 break;
1254 case '\016': /* SO */
1255 ictx->cell.set = 1;
1256 break;
1257 case '\017': /* SI */
1258 ictx->cell.set = 0;
1259 break;
1260 default:
1261 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1262 break;
1263 }
1264
1265 ictx->flags &= ~INPUT_LAST;
1266 return (0);
1267 }
1268
1269 /* Execute escape sequence. */
1270 static int
1271 input_esc_dispatch(struct input_ctx *ictx)
1272 {
1273 struct screen_write_ctx *sctx = &ictx->ctx;
1274 struct screen *s = sctx->s;
1275 struct input_table_entry *entry;
1276
1277 if (ictx->flags & INPUT_DISCARD)
1278 return (0);
1279 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1280
1281 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1282 sizeof input_esc_table[0], input_table_compare);
1283 if (entry == NULL) {
1284 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1285 return (0);
1286 }
1287
1288 switch (entry->type) {
1289 case INPUT_ESC_RIS:
1290 colour_palette_clear(ictx->palette);
1291 input_reset_cell(ictx);
1292 screen_write_reset(sctx);
1293 screen_write_fullredraw(sctx);
1294 break;
1295 case INPUT_ESC_IND:
1296 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1297 break;
1298 case INPUT_ESC_NEL:
1299 screen_write_carriagereturn(sctx);
1300 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1301 break;
1302 case INPUT_ESC_HTS:
1303 if (s->cx < screen_size_x(s))
1304 bit_set(s->tabs, s->cx);
1305 break;
1306 case INPUT_ESC_RI:
1307 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1308 break;
1309 case INPUT_ESC_DECKPAM:
1310 screen_write_mode_set(sctx, MODE_KKEYPAD);
1311 break;
1312 case INPUT_ESC_DECKPNM:
1313 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1314 break;
1315 case INPUT_ESC_DECSC:
1316 input_save_state(ictx);
1317 break;
1318 case INPUT_ESC_DECRC:
1319 input_restore_state(ictx);
1320 break;
1321 case INPUT_ESC_DECALN:
1322 screen_write_alignmenttest(sctx);
1323 break;
1324 case INPUT_ESC_SCSG0_ON:
1325 ictx->cell.g0set = 1;
1326 break;
1327 case INPUT_ESC_SCSG0_OFF:
1328 ictx->cell.g0set = 0;
1329 break;
1330 case INPUT_ESC_SCSG1_ON:
1331 ictx->cell.g1set = 1;
1332 break;
1333 case INPUT_ESC_SCSG1_OFF:
1334 ictx->cell.g1set = 0;
1335 break;
1336 case INPUT_ESC_ST:
1337 /* ST terminates OSC but the state transition already did it. */
1338 break;
1339 }
1340
1341 ictx->flags &= ~INPUT_LAST;
1342 return (0);
1343 }
1344
1345 /* Execute control sequence. */
1346 static int
1347 input_csi_dispatch(struct input_ctx *ictx)
1348 {
1349 struct screen_write_ctx *sctx = &ictx->ctx;
1350 struct screen *s = sctx->s;
1351 struct input_table_entry *entry;
1352 int i, n, m;
1353 u_int cx, bg = ictx->cell.cell.bg;
1354
1355 if (ictx->flags & INPUT_DISCARD)
1356 return (0);
1357
1358 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
1359 ictx->interm_buf, ictx->param_buf);
1360
1361 if (input_split(ictx) != 0)
1362 return (0);
1363
1364 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1365 sizeof input_csi_table[0], input_table_compare);
1366 if (entry == NULL) {
1367 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1368 return (0);
1369 }
1370
1371 switch (entry->type) {
1372 case INPUT_CSI_CBT:
1373 /* Find the previous tab point, n times. */
1374 cx = s->cx;
1375 if (cx > screen_size_x(s) - 1)
1376 cx = screen_size_x(s) - 1;
1377 n = input_get(ictx, 0, 1, 1);
1378 if (n == -1)
1379 break;
1380 while (cx > 0 && n-- > 0) {
1381 do
1382 cx--;
1383 while (cx > 0 && !bit_test(s->tabs, cx));
1384 }
1385 s->cx = cx;
1386 break;
1387 case INPUT_CSI_CUB:
1388 n = input_get(ictx, 0, 1, 1);
1389 if (n != -1)
1390 screen_write_cursorleft(sctx, n);
1391 break;
1392 case INPUT_CSI_CUD:
1393 n = input_get(ictx, 0, 1, 1);
1394 if (n != -1)
1395 screen_write_cursordown(sctx, n);
1396 break;
1397 case INPUT_CSI_CUF:
1398 n = input_get(ictx, 0, 1, 1);
1399 if (n != -1)
1400 screen_write_cursorright(sctx, n);
1401 break;
1402 case INPUT_CSI_CUP:
1403 n = input_get(ictx, 0, 1, 1);
1404 m = input_get(ictx, 1, 1, 1);
1405 if (n != -1 && m != -1)
1406 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1407 break;
1408 case INPUT_CSI_MODSET:
1409 n = input_get(ictx, 0, 0, 0);
1410 m = input_get(ictx, 1, 0, 0);
1411 /*
1412 * Set the extended key reporting mode as per the client request,
1413 * unless "extended-keys always" forces us into mode 1.
1414 */
1415 if (options_get_number(global_options, "extended-keys") != 1)
1416 break;
1417 screen_write_mode_clear(sctx,
1418 MODE_KEYS_EXTENDED|MODE_KEYS_EXTENDED_2);
1419 if (n == 4 && m == 1)
1420 screen_write_mode_set(sctx, MODE_KEYS_EXTENDED);
1421 if (n == 4 && m == 2)
1422 screen_write_mode_set(sctx, MODE_KEYS_EXTENDED_2);
1423 break;
1424 case INPUT_CSI_MODOFF:
1425 n = input_get(ictx, 0, 0, 0);
1426 /*
1427 * Clear the extended key reporting mode as per the client request,
1428 * unless "extended-keys always" forces us into mode 1.
1429 */
1430 if (n == 4) {
1431 screen_write_mode_clear(sctx,
1432 MODE_KEYS_EXTENDED|MODE_KEYS_EXTENDED_2);
1433 }
1434 break;
1435 case INPUT_CSI_WINOPS:
1436 input_csi_dispatch_winops(ictx);
1437 break;
1438 case INPUT_CSI_CUU:
1439 n = input_get(ictx, 0, 1, 1);
1440 if (n != -1)
1441 screen_write_cursorup(sctx, n);
1442 break;
1443 case INPUT_CSI_CNL:
1444 n = input_get(ictx, 0, 1, 1);
1445 if (n != -1) {
1446 screen_write_carriagereturn(sctx);
1447 screen_write_cursordown(sctx, n);
1448 }
1449 break;
1450 case INPUT_CSI_CPL:
1451 n = input_get(ictx, 0, 1, 1);
1452 if (n != -1) {
1453 screen_write_carriagereturn(sctx);
1454 screen_write_cursorup(sctx, n);
1455 }
1456 break;
1457 case INPUT_CSI_DA:
1458 switch (input_get(ictx, 0, 0, 0)) {
1459 case -1:
1460 break;
1461 case 0:
1462 #ifdef ENABLE_SIXEL
1463 input_reply(ictx, "\033[?1;2;4c");
1464 #else
1465 input_reply(ictx, "\033[?1;2c");
1466 #endif
1467 break;
1468 default:
1469 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1470 break;
1471 }
1472 break;
1473 case INPUT_CSI_DA_TWO:
1474 switch (input_get(ictx, 0, 0, 0)) {
1475 case -1:
1476 break;
1477 case 0:
1478 input_reply(ictx, "\033[>84;0;0c");
1479 break;
1480 default:
1481 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1482 break;
1483 }
1484 break;
1485 case INPUT_CSI_ECH:
1486 n = input_get(ictx, 0, 1, 1);
1487 if (n != -1)
1488 screen_write_clearcharacter(sctx, n, bg);
1489 break;
1490 case INPUT_CSI_DCH:
1491 n = input_get(ictx, 0, 1, 1);
1492 if (n != -1)
1493 screen_write_deletecharacter(sctx, n, bg);
1494 break;
1495 case INPUT_CSI_DECSTBM:
1496 n = input_get(ictx, 0, 1, 1);
1497 m = input_get(ictx, 1, 1, screen_size_y(s));
1498 if (n != -1 && m != -1)
1499 screen_write_scrollregion(sctx, n - 1, m - 1);
1500 break;
1501 case INPUT_CSI_DL:
1502 n = input_get(ictx, 0, 1, 1);
1503 if (n != -1)
1504 screen_write_deleteline(sctx, n, bg);
1505 break;
1506 case INPUT_CSI_DSR:
1507 switch (input_get(ictx, 0, 0, 0)) {
1508 case -1:
1509 break;
1510 case 5:
1511 input_reply(ictx, "\033[0n");
1512 break;
1513 case 6:
1514 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1515 break;
1516 default:
1517 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1518 break;
1519 }
1520 break;
1521 case INPUT_CSI_ED:
1522 switch (input_get(ictx, 0, 0, 0)) {
1523 case -1:
1524 break;
1525 case 0:
1526 screen_write_clearendofscreen(sctx, bg);
1527 break;
1528 case 1:
1529 screen_write_clearstartofscreen(sctx, bg);
1530 break;
1531 case 2:
1532 screen_write_clearscreen(sctx, bg);
1533 break;
1534 case 3:
1535 if (input_get(ictx, 1, 0, 0) == 0) {
1536 /*
1537 * Linux console extension to clear history
1538 * (for example before locking the screen).
1539 */
1540 screen_write_clearhistory(sctx);
1541 }
1542 break;
1543 default:
1544 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1545 break;
1546 }
1547 break;
1548 case INPUT_CSI_EL:
1549 switch (input_get(ictx, 0, 0, 0)) {
1550 case -1:
1551 break;
1552 case 0:
1553 screen_write_clearendofline(sctx, bg);
1554 break;
1555 case 1:
1556 screen_write_clearstartofline(sctx, bg);
1557 break;
1558 case 2:
1559 screen_write_clearline(sctx, bg);
1560 break;
1561 default:
1562 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1563 break;
1564 }
1565 break;
1566 case INPUT_CSI_HPA:
1567 n = input_get(ictx, 0, 1, 1);
1568 if (n != -1)
1569 screen_write_cursormove(sctx, n - 1, -1, 1);
1570 break;
1571 case INPUT_CSI_ICH:
1572 n = input_get(ictx, 0, 1, 1);
1573 if (n != -1)
1574 screen_write_insertcharacter(sctx, n, bg);
1575 break;
1576 case INPUT_CSI_IL:
1577 n = input_get(ictx, 0, 1, 1);
1578 if (n != -1)
1579 screen_write_insertline(sctx, n, bg);
1580 break;
1581 case INPUT_CSI_REP:
1582 n = input_get(ictx, 0, 1, 1);
1583 if (n == -1)
1584 break;
1585
1586 m = screen_size_x(s) - s->cx;
1587 if (n > m)
1588 n = m;
1589
1590 if (~ictx->flags & INPUT_LAST)
1591 break;
1592
1593 utf8_copy(&ictx->cell.cell.data, &ictx->last);
1594 for (i = 0; i < n; i++)
1595 screen_write_collect_add(sctx, &ictx->cell.cell);
1596 break;
1597 case INPUT_CSI_RCP:
1598 input_restore_state(ictx);
1599 break;
1600 case INPUT_CSI_RM:
1601 input_csi_dispatch_rm(ictx);
1602 break;
1603 case INPUT_CSI_RM_PRIVATE:
1604 input_csi_dispatch_rm_private(ictx);
1605 break;
1606 case INPUT_CSI_SCP:
1607 input_save_state(ictx);
1608 break;
1609 case INPUT_CSI_SGR:
1610 input_csi_dispatch_sgr(ictx);
1611 break;
1612 case INPUT_CSI_SM:
1613 input_csi_dispatch_sm(ictx);
1614 break;
1615 case INPUT_CSI_SM_PRIVATE:
1616 input_csi_dispatch_sm_private(ictx);
1617 break;
1618 case INPUT_CSI_SM_GRAPHICS:
1619 input_csi_dispatch_sm_graphics(ictx);
1620 break;
1621 case INPUT_CSI_SU:
1622 n = input_get(ictx, 0, 1, 1);
1623 if (n != -1)
1624 screen_write_scrollup(sctx, n, bg);
1625 break;
1626 case INPUT_CSI_SD:
1627 n = input_get(ictx, 0, 1, 1);
1628 if (n != -1)
1629 screen_write_scrolldown(sctx, n, bg);
1630 break;
1631 case INPUT_CSI_TBC:
1632 switch (input_get(ictx, 0, 0, 0)) {
1633 case -1:
1634 break;
1635 case 0:
1636 if (s->cx < screen_size_x(s))
1637 bit_clear(s->tabs, s->cx);
1638 break;
1639 case 3:
1640 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1641 break;
1642 default:
1643 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1644 break;
1645 }
1646 break;
1647 case INPUT_CSI_VPA:
1648 n = input_get(ictx, 0, 1, 1);
1649 if (n != -1)
1650 screen_write_cursormove(sctx, -1, n - 1, 1);
1651 break;
1652 case INPUT_CSI_DECSCUSR:
1653 n = input_get(ictx, 0, 0, 0);
1654 if (n != -1)
1655 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1656 break;
1657 case INPUT_CSI_XDA:
1658 n = input_get(ictx, 0, 0, 0);
1659 if (n == 0)
1660 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1661 break;
1662
1663 }
1664
1665 ictx->flags &= ~INPUT_LAST;
1666 return (0);
1667 }
1668
1669 /* Handle CSI RM. */
1670 static void
1671 input_csi_dispatch_rm(struct input_ctx *ictx)
1672 {
1673 struct screen_write_ctx *sctx = &ictx->ctx;
1674 u_int i;
1675
1676 for (i = 0; i < ictx->param_list_len; i++) {
1677 switch (input_get(ictx, i, 0, -1)) {
1678 case -1:
1679 break;
1680 case 4: /* IRM */
1681 screen_write_mode_clear(sctx, MODE_INSERT);
1682 break;
1683 case 34:
1684 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1685 break;
1686 default:
1687 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1688 break;
1689 }
1690 }
1691 }
1692
1693 /* Handle CSI private RM. */
1694 static void
1695 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1696 {
1697 struct screen_write_ctx *sctx = &ictx->ctx;
1698 struct grid_cell *gc = &ictx->cell.cell;
1699 u_int i;
1700
1701 for (i = 0; i < ictx->param_list_len; i++) {
1702 switch (input_get(ictx, i, 0, -1)) {
1703 case -1:
1704 break;
1705 case 1: /* DECCKM */
1706 screen_write_mode_clear(sctx, MODE_KCURSOR);
1707 break;
1708 case 3: /* DECCOLM */
1709 screen_write_cursormove(sctx, 0, 0, 1);
1710 screen_write_clearscreen(sctx, gc->bg);
1711 break;
1712 case 6: /* DECOM */
1713 screen_write_mode_clear(sctx, MODE_ORIGIN);
1714 screen_write_cursormove(sctx, 0, 0, 1);
1715 break;
1716 case 7: /* DECAWM */
1717 screen_write_mode_clear(sctx, MODE_WRAP);
1718 break;
1719 case 12:
1720 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1721 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1722 break;
1723 case 25: /* TCEM */
1724 screen_write_mode_clear(sctx, MODE_CURSOR);
1725 break;
1726 case 1000:
1727 case 1001:
1728 case 1002:
1729 case 1003:
1730 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1731 break;
1732 case 1004:
1733 screen_write_mode_clear(sctx, MODE_FOCUSON);
1734 break;
1735 case 1005:
1736 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1737 break;
1738 case 1006:
1739 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1740 break;
1741 case 47:
1742 case 1047:
1743 screen_write_alternateoff(sctx, gc, 0);
1744 break;
1745 case 1049:
1746 screen_write_alternateoff(sctx, gc, 1);
1747 break;
1748 case 2004:
1749 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1750 break;
1751 default:
1752 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1753 break;
1754 }
1755 }
1756 }
1757
1758 /* Handle CSI SM. */
1759 static void
1760 input_csi_dispatch_sm(struct input_ctx *ictx)
1761 {
1762 struct screen_write_ctx *sctx = &ictx->ctx;
1763 u_int i;
1764
1765 for (i = 0; i < ictx->param_list_len; i++) {
1766 switch (input_get(ictx, i, 0, -1)) {
1767 case -1:
1768 break;
1769 case 4: /* IRM */
1770 screen_write_mode_set(sctx, MODE_INSERT);
1771 break;
1772 case 34:
1773 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1774 break;
1775 default:
1776 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1777 break;
1778 }
1779 }
1780 }
1781
1782 /* Handle CSI private SM. */
1783 static void
1784 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1785 {
1786 struct screen_write_ctx *sctx = &ictx->ctx;
1787 struct grid_cell *gc = &ictx->cell.cell;
1788 u_int i;
1789
1790 for (i = 0; i < ictx->param_list_len; i++) {
1791 switch (input_get(ictx, i, 0, -1)) {
1792 case -1:
1793 break;
1794 case 1: /* DECCKM */
1795 screen_write_mode_set(sctx, MODE_KCURSOR);
1796 break;
1797 case 3: /* DECCOLM */
1798 screen_write_cursormove(sctx, 0, 0, 1);
1799 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1800 break;
1801 case 6: /* DECOM */
1802 screen_write_mode_set(sctx, MODE_ORIGIN);
1803 screen_write_cursormove(sctx, 0, 0, 1);
1804 break;
1805 case 7: /* DECAWM */
1806 screen_write_mode_set(sctx, MODE_WRAP);
1807 break;
1808 case 12:
1809 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1810 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1811 break;
1812 case 25: /* TCEM */
1813 screen_write_mode_set(sctx, MODE_CURSOR);
1814 break;
1815 case 1000:
1816 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1817 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1818 break;
1819 case 1002:
1820 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1821 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1822 break;
1823 case 1003:
1824 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1825 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1826 break;
1827 case 1004:
1828 screen_write_mode_set(sctx, MODE_FOCUSON);
1829 break;
1830 case 1005:
1831 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1832 break;
1833 case 1006:
1834 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1835 break;
1836 case 47:
1837 case 1047:
1838 screen_write_alternateon(sctx, gc, 0);
1839 break;
1840 case 1049:
1841 screen_write_alternateon(sctx, gc, 1);
1842 break;
1843 case 2004:
1844 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1845 break;
1846 default:
1847 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1848 break;
1849 }
1850 }
1851 }
1852
1853 /* Handle CSI graphics SM. */
1854 static void
1855 input_csi_dispatch_sm_graphics(__unused struct input_ctx *ictx)
1856 {
1857 #ifdef ENABLE_SIXEL
1858 int n, m, o;
1859
1860 if (ictx->param_list_len > 3)
1861 return;
1862 n = input_get(ictx, 0, 0, 0);
1863 m = input_get(ictx, 1, 0, 0);
1864 o = input_get(ictx, 2, 0, 0);
1865
1866 if (n == 1 && (m == 1 || m == 2 || m == 4))
1867 input_reply(ictx, "\033[?%d;0;%uS", n, SIXEL_COLOUR_REGISTERS);
1868 else
1869 input_reply(ictx, "\033[?%d;3;%dS", n, o);
1870 #endif
1871 }
1872
1873 /* Handle CSI window operations. */
1874 static void
1875 input_csi_dispatch_winops(struct input_ctx *ictx)
1876 {
1877 struct screen_write_ctx *sctx = &ictx->ctx;
1878 struct screen *s = sctx->s;
1879 struct window_pane *wp = ictx->wp;
1880 struct window *w = NULL;
1881 u_int x = screen_size_x(s), y = screen_size_y(s);
1882 int n, m;
1883
1884 if (wp != NULL)
1885 w = wp->window;
1886
1887 m = 0;
1888 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1889 switch (n) {
1890 case 1:
1891 case 2:
1892 case 5:
1893 case 6:
1894 case 7:
1895 case 11:
1896 case 13:
1897 case 20:
1898 case 21:
1899 case 24:
1900 break;
1901 case 3:
1902 case 4:
1903 case 8:
1904 m++;
1905 if (input_get(ictx, m, 0, -1) == -1)
1906 return;
1907 /* FALLTHROUGH */
1908 case 9:
1909 case 10:
1910 m++;
1911 if (input_get(ictx, m, 0, -1) == -1)
1912 return;
1913 break;
1914 case 14:
1915 if (w == NULL)
1916 break;
1917 input_reply(ictx, "\033[4;%u;%ut", y * w->ypixel,
1918 x * w->xpixel);
1919 break;
1920 case 15:
1921 if (w == NULL)
1922 break;
1923 input_reply(ictx, "\033[5;%u;%ut", y * w->ypixel,
1924 x * w->xpixel);
1925 break;
1926 case 16:
1927 if (w == NULL)
1928 break;
1929 input_reply(ictx, "\033[6;%u;%ut", w->ypixel,
1930 w->xpixel);
1931 break;
1932 case 18:
1933 input_reply(ictx, "\033[8;%u;%ut", y, x);
1934 break;
1935 case 19:
1936 input_reply(ictx, "\033[9;%u;%ut", y, x);
1937 break;
1938 case 22:
1939 m++;
1940 switch (input_get(ictx, m, 0, -1)) {
1941 case -1:
1942 return;
1943 case 0:
1944 case 2:
1945 screen_push_title(sctx->s);
1946 break;
1947 }
1948 break;
1949 case 23:
1950 m++;
1951 switch (input_get(ictx, m, 0, -1)) {
1952 case -1:
1953 return;
1954 case 0:
1955 case 2:
1956 screen_pop_title(sctx->s);
1957 if (wp == NULL)
1958 break;
1959 notify_pane("pane-title-changed", wp);
1960 server_redraw_window_borders(w);
1961 server_status_window(w);
1962 break;
1963 }
1964 break;
1965 default:
1966 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1967 break;
1968 }
1969 m++;
1970 }
1971 }
1972
1973 /* Helper for 256 colour SGR. */
1974 static int
1975 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1976 {
1977 struct grid_cell *gc = &ictx->cell.cell;
1978
1979 if (c == -1 || c > 255) {
1980 if (fgbg == 38)
1981 gc->fg = 8;
1982 else if (fgbg == 48)
1983 gc->bg = 8;
1984 } else {
1985 if (fgbg == 38)
1986 gc->fg = c | COLOUR_FLAG_256;
1987 else if (fgbg == 48)
1988 gc->bg = c | COLOUR_FLAG_256;
1989 else if (fgbg == 58)
1990 gc->us = c | COLOUR_FLAG_256;
1991 }
1992 return (1);
1993 }
1994
1995 /* Handle CSI SGR for 256 colours. */
1996 static void
1997 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1998 {
1999 int c;
2000
2001 c = input_get(ictx, (*i) + 1, 0, -1);
2002 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
2003 (*i)++;
2004 }
2005
2006 /* Helper for RGB colour SGR. */
2007 static int
2008 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
2009 int b)
2010 {
2011 struct grid_cell *gc = &ictx->cell.cell;
2012
2013 if (r == -1 || r > 255)
2014 return (0);
2015 if (g == -1 || g > 255)
2016 return (0);
2017 if (b == -1 || b > 255)
2018 return (0);
2019
2020 if (fgbg == 38)
2021 gc->fg = colour_join_rgb(r, g, b);
2022 else if (fgbg == 48)
2023 gc->bg = colour_join_rgb(r, g, b);
2024 else if (fgbg == 58)
2025 gc->us = colour_join_rgb(r, g, b);
2026 return (1);
2027 }
2028
2029 /* Handle CSI SGR for RGB colours. */
2030 static void
2031 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
2032 {
2033 int r, g, b;
2034
2035 r = input_get(ictx, (*i) + 1, 0, -1);
2036 g = input_get(ictx, (*i) + 2, 0, -1);
2037 b = input_get(ictx, (*i) + 3, 0, -1);
2038 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
2039 (*i) += 3;
2040 }
2041
2042 /* Handle CSI SGR with a ISO parameter. */
2043 static void
2044 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
2045 {
2046 struct grid_cell *gc = &ictx->cell.cell;
2047 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
2048 int p[8];
2049 u_int n;
2050 const char *errstr;
2051
2052 for (n = 0; n < nitems(p); n++)
2053 p[n] = -1;
2054 n = 0;
2055
2056 ptr = copy = xstrdup(s);
2057 while ((out = strsep(&ptr, ":")) != NULL) {
2058 if (*out != '\0') {
2059 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
2060 if (errstr != NULL || n == nitems(p)) {
2061 free(copy);
2062 return;
2063 }
2064 } else {
2065 n++;
2066 if (n == nitems(p)) {
2067 free(copy);
2068 return;
2069 }
2070 }
2071 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2072 }
2073 free(copy);
2074
2075 if (n == 0)
2076 return;
2077 if (p[0] == 4) {
2078 if (n != 2)
2079 return;
2080 switch (p[1]) {
2081 case 0:
2082 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2083 break;
2084 case 1:
2085 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2086 gc->attr |= GRID_ATTR_UNDERSCORE;
2087 break;
2088 case 2:
2089 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2090 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2091 break;
2092 case 3:
2093 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2094 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2095 break;
2096 case 4:
2097 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2098 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2099 break;
2100 case 5:
2101 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2102 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2103 break;
2104 }
2105 return;
2106 }
2107 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2108 return;
2109 switch (p[1]) {
2110 case 2:
2111 if (n < 3)
2112 break;
2113 if (n == 5)
2114 i = 2;
2115 else
2116 i = 3;
2117 if (n < i + 3)
2118 break;
2119 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2120 p[i + 2]);
2121 break;
2122 case 5:
2123 if (n < 3)
2124 break;
2125 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2126 break;
2127 }
2128 }
2129
2130 /* Handle CSI SGR. */
2131 static void
2132 input_csi_dispatch_sgr(struct input_ctx *ictx)
2133 {
2134 struct grid_cell *gc = &ictx->cell.cell;
2135 u_int i, link;
2136 int n;
2137
2138 if (ictx->param_list_len == 0) {
2139 memcpy(gc, &grid_default_cell, sizeof *gc);
2140 return;
2141 }
2142
2143 for (i = 0; i < ictx->param_list_len; i++) {
2144 if (ictx->param_list[i].type == INPUT_STRING) {
2145 input_csi_dispatch_sgr_colon(ictx, i);
2146 continue;
2147 }
2148 n = input_get(ictx, i, 0, 0);
2149 if (n == -1)
2150 continue;
2151
2152 if (n == 38 || n == 48 || n == 58) {
2153 i++;
2154 switch (input_get(ictx, i, 0, -1)) {
2155 case 2:
2156 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2157 break;
2158 case 5:
2159 input_csi_dispatch_sgr_256(ictx, n, &i);
2160 break;
2161 }
2162 continue;
2163 }
2164
2165 switch (n) {
2166 case 0:
2167 link = gc->link;
2168 memcpy(gc, &grid_default_cell, sizeof *gc);
2169 gc->link = link;
2170 break;
2171 case 1:
2172 gc->attr |= GRID_ATTR_BRIGHT;
2173 break;
2174 case 2:
2175 gc->attr |= GRID_ATTR_DIM;
2176 break;
2177 case 3:
2178 gc->attr |= GRID_ATTR_ITALICS;
2179 break;
2180 case 4:
2181 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2182 gc->attr |= GRID_ATTR_UNDERSCORE;
2183 break;
2184 case 5:
2185 case 6:
2186 gc->attr |= GRID_ATTR_BLINK;
2187 break;
2188 case 7:
2189 gc->attr |= GRID_ATTR_REVERSE;
2190 break;
2191 case 8:
2192 gc->attr |= GRID_ATTR_HIDDEN;
2193 break;
2194 case 9:
2195 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2196 break;
2197 case 21:
2198 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2199 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2200 break;
2201 case 22:
2202 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2203 break;
2204 case 23:
2205 gc->attr &= ~GRID_ATTR_ITALICS;
2206 break;
2207 case 24:
2208 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2209 break;
2210 case 25:
2211 gc->attr &= ~GRID_ATTR_BLINK;
2212 break;
2213 case 27:
2214 gc->attr &= ~GRID_ATTR_REVERSE;
2215 break;
2216 case 28:
2217 gc->attr &= ~GRID_ATTR_HIDDEN;
2218 break;
2219 case 29:
2220 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2221 break;
2222 case 30:
2223 case 31:
2224 case 32:
2225 case 33:
2226 case 34:
2227 case 35:
2228 case 36:
2229 case 37:
2230 gc->fg = n - 30;
2231 break;
2232 case 39:
2233 gc->fg = 8;
2234 break;
2235 case 40:
2236 case 41:
2237 case 42:
2238 case 43:
2239 case 44:
2240 case 45:
2241 case 46:
2242 case 47:
2243 gc->bg = n - 40;
2244 break;
2245 case 49:
2246 gc->bg = 8;
2247 break;
2248 case 53:
2249 gc->attr |= GRID_ATTR_OVERLINE;
2250 break;
2251 case 55:
2252 gc->attr &= ~GRID_ATTR_OVERLINE;
2253 break;
2254 case 59:
2255 gc->us = 8;
2256 break;
2257 case 90:
2258 case 91:
2259 case 92:
2260 case 93:
2261 case 94:
2262 case 95:
2263 case 96:
2264 case 97:
2265 gc->fg = n;
2266 break;
2267 case 100:
2268 case 101:
2269 case 102:
2270 case 103:
2271 case 104:
2272 case 105:
2273 case 106:
2274 case 107:
2275 gc->bg = n - 10;
2276 break;
2277 }
2278 }
2279 }
2280
2281 /* End of input with BEL. */
2282 static int
2283 input_end_bel(struct input_ctx *ictx)
2284 {
2285 log_debug("%s", __func__);
2286
2287 ictx->input_end = INPUT_END_BEL;
2288
2289 return (0);
2290 }
2291
2292 /* DCS string started. */
2293 static void
2294 input_enter_dcs(struct input_ctx *ictx)
2295 {
2296 log_debug("%s", __func__);
2297
2298 input_clear(ictx);
2299 input_start_timer(ictx);
2300 ictx->flags &= ~INPUT_LAST;
2301 }
2302
2303 /* DCS terminator (ST) received. */
2304 static int
2305 input_dcs_dispatch(struct input_ctx *ictx)
2306 {
2307 struct window_pane *wp = ictx->wp;
2308 struct screen_write_ctx *sctx = &ictx->ctx;
2309 u_char *buf = ictx->input_buf;
2310 size_t len = ictx->input_len;
2311 const char prefix[] = "tmux;";
2312 const u_int prefixlen = (sizeof prefix) - 1;
2313 long long allow_passthrough = 0;
2314 #ifdef ENABLE_SIXEL
2315 struct window *w;
2316 struct sixel_image *si;
2317 #endif
2318
2319 if (wp == NULL)
2320 return (0);
2321
2322 if (ictx->flags & INPUT_DISCARD) {
2323 log_debug("%s: %zu bytes (discard)", __func__, len);
2324 return (0);
2325 }
2326
2327 #ifdef ENABLE_SIXEL
2328 w = wp->window;
2329 if (buf[0] == 'q') {
2330 si = sixel_parse(buf, len, w->xpixel, w->ypixel);
2331 if (si != NULL)
2332 screen_write_sixelimage(sctx, si, ictx->cell.cell.bg);
2333 }
2334 #endif
2335
2336 allow_passthrough = options_get_number(wp->options, "allow-passthrough");
2337 if (!allow_passthrough)
2338 return (0);
2339 log_debug("%s: \"%s\"", __func__, buf);
2340
2341 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2342 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2343 allow_passthrough == 2);
2344 }
2345
2346 return (0);
2347 }
2348
2349 /* OSC string started. */
2350 static void
2351 input_enter_osc(struct input_ctx *ictx)
2352 {
2353 log_debug("%s", __func__);
2354
2355 input_clear(ictx);
2356 input_start_timer(ictx);
2357 ictx->flags &= ~INPUT_LAST;
2358 }
2359
2360 /* OSC terminator (ST) received. */
2361 static void
2362 input_exit_osc(struct input_ctx *ictx)
2363 {
2364 struct screen_write_ctx *sctx = &ictx->ctx;
2365 struct window_pane *wp = ictx->wp;
2366 u_char *p = ictx->input_buf;
2367 u_int option;
2368
2369 if (ictx->flags & INPUT_DISCARD)
2370 return;
2371 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2372 return;
2373
2374 log_debug("%s: \"%s\" (end %s)", __func__, p,
2375 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2376
2377 option = 0;
2378 while (*p >= '0' && *p <= '9')
2379 option = option * 10 + *p++ - '0';
2380 if (*p != ';' && *p != '\0')
2381 return;
2382 if (*p == ';')
2383 p++;
2384
2385 switch (option) {
2386 case 0:
2387 case 2:
2388 if (wp != NULL &&
2389 options_get_number(wp->options, "allow-set-title") &&
2390 screen_set_title(sctx->s, p)) {
2391 notify_pane("pane-title-changed", wp);
2392 server_redraw_window_borders(wp->window);
2393 server_status_window(wp->window);
2394 }
2395 break;
2396 case 4:
2397 input_osc_4(ictx, p);
2398 break;
2399 case 7:
2400 if (utf8_isvalid(p)) {
2401 screen_set_path(sctx->s, p);
2402 if (wp != NULL) {
2403 server_redraw_window_borders(wp->window);
2404 server_status_window(wp->window);
2405 }
2406 }
2407 break;
2408 case 8:
2409 input_osc_8(ictx, p);
2410 break;
2411 case 10:
2412 input_osc_10(ictx, p);
2413 break;
2414 case 11:
2415 input_osc_11(ictx, p);
2416 break;
2417 case 12:
2418 input_osc_12(ictx, p);
2419 break;
2420 case 52:
2421 input_osc_52(ictx, p);
2422 break;
2423 case 104:
2424 input_osc_104(ictx, p);
2425 break;
2426 case 110:
2427 input_osc_110(ictx, p);
2428 break;
2429 case 111:
2430 input_osc_111(ictx, p);
2431 break;
2432 case 112:
2433 input_osc_112(ictx, p);
2434 break;
2435 case 133:
2436 input_osc_133(ictx, p);
2437 break;
2438 default:
2439 log_debug("%s: unknown '%u'", __func__, option);
2440 break;
2441 }
2442 }
2443
2444 /* APC string started. */
2445 static void
2446 input_enter_apc(struct input_ctx *ictx)
2447 {
2448 log_debug("%s", __func__);
2449
2450 input_clear(ictx);
2451 input_start_timer(ictx);
2452 ictx->flags &= ~INPUT_LAST;
2453 }
2454
2455 /* APC terminator (ST) received. */
2456 static void
2457 input_exit_apc(struct input_ctx *ictx)
2458 {
2459 struct screen_write_ctx *sctx = &ictx->ctx;
2460 struct window_pane *wp = ictx->wp;
2461
2462 if (ictx->flags & INPUT_DISCARD)
2463 return;
2464 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2465
2466 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2467 notify_pane("pane-title-changed", wp);
2468 server_redraw_window_borders(wp->window);
2469 server_status_window(wp->window);
2470 }
2471 }
2472
2473 /* Rename string started. */
2474 static void
2475 input_enter_rename(struct input_ctx *ictx)
2476 {
2477 log_debug("%s", __func__);
2478
2479 input_clear(ictx);
2480 input_start_timer(ictx);
2481 ictx->flags &= ~INPUT_LAST;
2482 }
2483
2484 /* Rename terminator (ST) received. */
2485 static void
2486 input_exit_rename(struct input_ctx *ictx)
2487 {
2488 struct window_pane *wp = ictx->wp;
2489 struct window *w;
2490 struct options_entry *o;
2491
2492 if (wp == NULL)
2493 return;
2494 if (ictx->flags & INPUT_DISCARD)
2495 return;
2496 if (!options_get_number(ictx->wp->options, "allow-rename"))
2497 return;
2498 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2499
2500 if (!utf8_isvalid(ictx->input_buf))
2501 return;
2502 w = wp->window;
2503
2504 if (ictx->input_len == 0) {
2505 o = options_get_only(w->options, "automatic-rename");
2506 if (o != NULL)
2507 options_remove_or_default(o, -1, NULL);
2508 if (!options_get_number(w->options, "automatic-rename"))
2509 window_set_name(w, "");
2510 } else {
2511 options_set_number(w->options, "automatic-rename", 0);
2512 window_set_name(w, ictx->input_buf);
2513 }
2514 server_redraw_window_borders(w);
2515 server_status_window(w);
2516 }
2517
2518 /* Open UTF-8 character. */
2519 static int
2520 input_top_bit_set(struct input_ctx *ictx)
2521 {
2522 struct screen_write_ctx *sctx = &ictx->ctx;
2523 struct utf8_data *ud = &ictx->utf8data;
2524
2525 ictx->flags &= ~INPUT_LAST;
2526
2527 if (!ictx->utf8started) {
2528 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2529 return (0);
2530 ictx->utf8started = 1;
2531 return (0);
2532 }
2533
2534 switch (utf8_append(ud, ictx->ch)) {
2535 case UTF8_MORE:
2536 return (0);
2537 case UTF8_ERROR:
2538 ictx->utf8started = 0;
2539 return (0);
2540 case UTF8_DONE:
2541 break;
2542 }
2543 ictx->utf8started = 0;
2544
2545 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2546 (int)ud->size, ud->data, ud->width);
2547
2548 utf8_copy(&ictx->cell.cell.data, ud);
2549 screen_write_collect_add(sctx, &ictx->cell.cell);
2550
2551 utf8_copy(&ictx->last, &ictx->cell.cell.data);
2552 ictx->flags |= INPUT_LAST;
2553
2554 return (0);
2555 }
2556
2557 /* Reply to a colour request. */
2558 static void
2559 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2560 {
2561 u_char r, g, b;
2562 const char *end;
2563
2564 if (c != -1)
2565 c = colour_force_rgb(c);
2566 if (c == -1)
2567 return;
2568 colour_split_rgb(c, &r, &g, &b);
2569
2570 if (ictx->input_end == INPUT_END_BEL)
2571 end = "\007";
2572 else
2573 end = "\033\\";
2574 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2575 n, r, r, g, g, b, b, end);
2576 }
2577
2578 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2579 static void
2580 input_osc_4(struct input_ctx *ictx, const char *p)
2581 {
2582 char *copy, *s, *next = NULL;
2583 long idx;
2584 int c, bad = 0, redraw = 0;
2585
2586 copy = s = xstrdup(p);
2587 while (s != NULL && *s != '\0') {
2588 idx = strtol(s, &next, 10);
2589 if (*next++ != ';') {
2590 bad = 1;
2591 break;
2592 }
2593 if (idx < 0 || idx >= 256) {
2594 bad = 1;
2595 break;
2596 }
2597
2598 s = strsep(&next, ";");
2599 if (strcmp(s, "?") == 0) {
2600 c = colour_palette_get(ictx->palette, idx);
2601 if (c != -1)
2602 input_osc_colour_reply(ictx, 4, c);
2603 continue;
2604 }
2605 if ((c = colour_parseX11(s)) == -1) {
2606 s = next;
2607 continue;
2608 }
2609 if (colour_palette_set(ictx->palette, idx, c))
2610 redraw = 1;
2611 s = next;
2612 }
2613 if (bad)
2614 log_debug("bad OSC 4: %s", p);
2615 if (redraw)
2616 screen_write_fullredraw(&ictx->ctx);
2617 free(copy);
2618 }
2619
2620 /* Handle the OSC 8 sequence for embedding hyperlinks. */
2621 static void
2622 input_osc_8(struct input_ctx *ictx, const char *p)
2623 {
2624 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2625 struct grid_cell *gc = &ictx->cell.cell;
2626 const char *start, *end, *uri;
2627 char *id = NULL;
2628
2629 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
2630 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2631 if (id != NULL)
2632 goto bad;
2633 id = xstrndup(start + 3, end - start - 3);
2634 }
2635
2636 /* The first ; is the end of parameters and start of the URI. */
2637 if (*end == ';')
2638 break;
2639 }
2640 if (end == NULL || *end != ';')
2641 goto bad;
2642 uri = end + 1;
2643 if (*uri == '\0') {
2644 gc->link = 0;
2645 free(id);
2646 return;
2647 }
2648 gc->link = hyperlinks_put(hl, uri, id);
2649 if (id == NULL)
2650 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2651 else
2652 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2653 free(id);
2654 return;
2655
2656 bad:
2657 log_debug("bad OSC 8 %s", p);
2658 free(id);
2659 }
2660
2661 /*
2662 * Get a client with a foreground for the pane. There isn't much to choose
2663 * between them so just use the first.
2664 */
2665 static int
2666 input_get_fg_client(struct window_pane *wp)
2667 {
2668 struct window *w = wp->window;
2669 struct client *loop;
2670
2671 TAILQ_FOREACH(loop, &clients, entry) {
2672 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2673 continue;
2674 if (loop->session == NULL || !session_has(loop->session, w))
2675 continue;
2676 if (loop->tty.fg == -1)
2677 continue;
2678 return (loop->tty.fg);
2679 }
2680 return (-1);
2681 }
2682
2683 /* Get a client with a background for the pane. */
2684 static int
2685 input_get_bg_client(struct window_pane *wp)
2686 {
2687 struct window *w = wp->window;
2688 struct client *loop;
2689
2690 TAILQ_FOREACH(loop, &clients, entry) {
2691 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2692 continue;
2693 if (loop->session == NULL || !session_has(loop->session, w))
2694 continue;
2695 if (loop->tty.bg == -1)
2696 continue;
2697 return (loop->tty.bg);
2698 }
2699 return (-1);
2700 }
2701
2702 /*
2703 * If any control mode client exists that has provided a bg color, return it.
2704 * Otherwise, return -1.
2705 */
2706 static int
2707 input_get_bg_control_client(struct window_pane *wp)
2708 {
2709 struct client *c;
2710
2711 if (wp->control_bg == -1)
2712 return (-1);
2713
2714 TAILQ_FOREACH(c, &clients, entry) {
2715 if (c->flags & CLIENT_CONTROL)
2716 return (wp->control_bg);
2717 }
2718 return (-1);
2719 }
2720
2721 /*
2722 * If any control mode client exists that has provided a fg color, return it.
2723 * Otherwise, return -1.
2724 */
2725 static int
2726 input_get_fg_control_client(struct window_pane *wp)
2727 {
2728 struct client *c;
2729
2730 if (wp->control_fg == -1)
2731 return (-1);
2732
2733 TAILQ_FOREACH(c, &clients, entry) {
2734 if (c->flags & CLIENT_CONTROL)
2735 return (wp->control_fg);
2736 }
2737 return (-1);
2738 }
2739
2740 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2741 static void
2742 input_osc_10(struct input_ctx *ictx, const char *p)
2743 {
2744 struct window_pane *wp = ictx->wp;
2745 struct grid_cell defaults;
2746 int c;
2747
2748 if (strcmp(p, "?") == 0) {
2749 if (wp == NULL)
2750 return;
2751 c = input_get_fg_control_client(wp);
2752 if (c == -1) {
2753 tty_default_colours(&defaults, wp);
2754 if (COLOUR_DEFAULT(defaults.fg))
2755 c = input_get_fg_client(wp);
2756 else
2757 c = defaults.fg;
2758 }
2759 input_osc_colour_reply(ictx, 10, c);
2760 return;
2761 }
2762
2763 if ((c = colour_parseX11(p)) == -1) {
2764 log_debug("bad OSC 10: %s", p);
2765 return;
2766 }
2767 if (ictx->palette != NULL) {
2768 ictx->palette->fg = c;
2769 if (wp != NULL)
2770 wp->flags |= PANE_STYLECHANGED;
2771 screen_write_fullredraw(&ictx->ctx);
2772 }
2773 }
2774
2775 /* Handle the OSC 110 sequence for resetting foreground colour. */
2776 static void
2777 input_osc_110(struct input_ctx *ictx, const char *p)
2778 {
2779 struct window_pane *wp = ictx->wp;
2780
2781 if (*p != '\0')
2782 return;
2783 if (ictx->palette != NULL) {
2784 ictx->palette->fg = 8;
2785 if (wp != NULL)
2786 wp->flags |= PANE_STYLECHANGED;
2787 screen_write_fullredraw(&ictx->ctx);
2788 }
2789 }
2790
2791 /* Handle the OSC 11 sequence for setting and querying background colour. */
2792 static void
2793 input_osc_11(struct input_ctx *ictx, const char *p)
2794 {
2795 struct window_pane *wp = ictx->wp;
2796 struct grid_cell defaults;
2797 int c;
2798
2799 if (strcmp(p, "?") == 0) {
2800 if (wp == NULL)
2801 return;
2802 c = input_get_bg_control_client(wp);
2803 if (c == -1) {
2804 tty_default_colours(&defaults, wp);
2805 if (COLOUR_DEFAULT(defaults.bg))
2806 c = input_get_bg_client(wp);
2807 else
2808 c = defaults.bg;
2809 }
2810 input_osc_colour_reply(ictx, 11, c);
2811 return;
2812 }
2813
2814 if ((c = colour_parseX11(p)) == -1) {
2815 log_debug("bad OSC 11: %s", p);
2816 return;
2817 }
2818 if (ictx->palette != NULL) {
2819 ictx->palette->bg = c;
2820 if (wp != NULL)
2821 wp->flags |= PANE_STYLECHANGED;
2822 screen_write_fullredraw(&ictx->ctx);
2823 }
2824 }
2825
2826 /* Handle the OSC 111 sequence for resetting background colour. */
2827 static void
2828 input_osc_111(struct input_ctx *ictx, const char *p)
2829 {
2830 struct window_pane *wp = ictx->wp;
2831
2832 if (*p != '\0')
2833 return;
2834 if (ictx->palette != NULL) {
2835 ictx->palette->bg = 8;
2836 if (wp != NULL)
2837 wp->flags |= PANE_STYLECHANGED;
2838 screen_write_fullredraw(&ictx->ctx);
2839 }
2840 }
2841
2842 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2843 static void
2844 input_osc_12(struct input_ctx *ictx, const char *p)
2845 {
2846 struct window_pane *wp = ictx->wp;
2847 int c;
2848
2849 if (strcmp(p, "?") == 0) {
2850 if (wp != NULL) {
2851 c = ictx->ctx.s->ccolour;
2852 if (c == -1)
2853 c = ictx->ctx.s->default_ccolour;
2854 input_osc_colour_reply(ictx, 12, c);
2855 }
2856 return;
2857 }
2858
2859 if ((c = colour_parseX11(p)) == -1) {
2860 log_debug("bad OSC 12: %s", p);
2861 return;
2862 }
2863 screen_set_cursor_colour(ictx->ctx.s, c);
2864 }
2865
2866 /* Handle the OSC 112 sequence for resetting cursor colour. */
2867 static void
2868 input_osc_112(struct input_ctx *ictx, const char *p)
2869 {
2870 if (*p == '\0') /* no arguments allowed */
2871 screen_set_cursor_colour(ictx->ctx.s, -1);
2872 }
2873
2874 /* Handle the OSC 133 sequence. */
2875 static void
2876 input_osc_133(struct input_ctx *ictx, const char *p)
2877 {
2878 struct grid *gd = ictx->ctx.s->grid;
2879 u_int line = ictx->ctx.s->cy + gd->hsize;
2880 struct grid_line *gl;
2881
2882 if (line > gd->hsize + gd->sy - 1)
2883 return;
2884 gl = grid_get_line(gd, line);
2885
2886 switch (*p) {
2887 case 'A':
2888 gl->flags |= GRID_LINE_START_PROMPT;
2889 break;
2890 case 'C':
2891 gl->flags |= GRID_LINE_START_OUTPUT;
2892 break;
2893 }
2894 }
2895
2896 /* Handle the OSC 52 sequence for setting the clipboard. */
2897 static void
2898 input_osc_52(struct input_ctx *ictx, const char *p)
2899 {
2900 struct window_pane *wp = ictx->wp;
2901 char *end;
2902 const char *buf = NULL;
2903 size_t len = 0;
2904 u_char *out;
2905 int outlen, state;
2906 struct screen_write_ctx ctx;
2907 struct paste_buffer *pb;
2908 const char* allow = "cpqs01234567";
2909 char flags[sizeof "cpqs01234567"] = "";
2910 u_int i, j = 0;
2911
2912 if (wp == NULL)
2913 return;
2914 state = options_get_number(global_options, "set-clipboard");
2915 if (state != 2)
2916 return;
2917
2918 if ((end = strchr(p, ';')) == NULL)
2919 return;
2920 end++;
2921 if (*end == '\0')
2922 return;
2923 log_debug("%s: %s", __func__, end);
2924
2925 for (i = 0; p + i != end; i++) {
2926 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2927 flags[j++] = p[i];
2928 }
2929 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2930
2931 if (strcmp(end, "?") == 0) {
2932 if ((pb = paste_get_top(NULL)) != NULL)
2933 buf = paste_buffer_data(pb, &len);
2934 if (ictx->input_end == INPUT_END_BEL)
2935 input_reply_clipboard(ictx->event, buf, len, "\007");
2936 else
2937 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2938 return;
2939 }
2940
2941 len = (strlen(end) / 4) * 3;
2942 if (len == 0)
2943 return;
2944
2945 out = xmalloc(len);
2946 if ((outlen = b64_pton(end, out, len)) == -1) {
2947 free(out);
2948 return;
2949 }
2950
2951 screen_write_start_pane(&ctx, wp, NULL);
2952 screen_write_setselection(&ctx, flags, out, outlen);
2953 screen_write_stop(&ctx);
2954 notify_pane("pane-set-clipboard", wp);
2955
2956 paste_add(NULL, out, outlen);
2957 }
2958
2959 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2960 static void
2961 input_osc_104(struct input_ctx *ictx, const char *p)
2962 {
2963 char *copy, *s;
2964 long idx;
2965 int bad = 0, redraw = 0;
2966
2967 if (*p == '\0') {
2968 colour_palette_clear(ictx->palette);
2969 screen_write_fullredraw(&ictx->ctx);
2970 return;
2971 }
2972
2973 copy = s = xstrdup(p);
2974 while (*s != '\0') {
2975 idx = strtol(s, &s, 10);
2976 if (*s != '\0' && *s != ';') {
2977 bad = 1;
2978 break;
2979 }
2980 if (idx < 0 || idx >= 256) {
2981 bad = 1;
2982 break;
2983 }
2984 if (colour_palette_set(ictx->palette, idx, -1))
2985 redraw = 1;
2986 if (*s == ';')
2987 s++;
2988 }
2989 if (bad)
2990 log_debug("bad OSC 104: %s", p);
2991 if (redraw)
2992 screen_write_fullredraw(&ictx->ctx);
2993 free(copy);
2994 }
2995
2996 void
2997 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2998 const char *end)
2999 {
3000 char *out = NULL;
3001 int outlen = 0;
3002
3003 if (buf != NULL && len != 0) {
3004 if (len >= ((size_t)INT_MAX * 3 / 4) - 1)
3005 return;
3006 outlen = 4 * ((len + 2) / 3) + 1;
3007 out = xmalloc(outlen);
3008 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
3009 free(out);
3010 return;
3011 }
3012 }
3013
3014 bufferevent_write(bev, "\033]52;;", 6);
3015 if (outlen != 0)
3016 bufferevent_write(bev, out, outlen);
3017 bufferevent_write(bev, end, strlen(end));
3018 free(out);
3019 }
tmux -- terminal multiplexer similar to GNU Screen