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Merge branch 'obsd-master'
[tmux.git] / input.c
blobf49964d429df14f2422d4c721c4a4e6ca59ca3a0
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 static void input_osc_133(struct input_ctx *, const char *);
148
149 /* Transition entry/exit handlers. */
150 static void input_clear(struct input_ctx *);
151 static void input_ground(struct input_ctx *);
152 static void input_enter_dcs(struct input_ctx *);
153 static void input_enter_osc(struct input_ctx *);
154 static void input_exit_osc(struct input_ctx *);
155 static void input_enter_apc(struct input_ctx *);
156 static void input_exit_apc(struct input_ctx *);
157 static void input_enter_rename(struct input_ctx *);
158 static void input_exit_rename(struct input_ctx *);
159
160 /* Input state handlers. */
161 static int input_print(struct input_ctx *);
162 static int input_intermediate(struct input_ctx *);
163 static int input_parameter(struct input_ctx *);
164 static int input_input(struct input_ctx *);
165 static int input_c0_dispatch(struct input_ctx *);
166 static int input_esc_dispatch(struct input_ctx *);
167 static int input_csi_dispatch(struct input_ctx *);
168 static void input_csi_dispatch_rm(struct input_ctx *);
169 static void input_csi_dispatch_rm_private(struct input_ctx *);
170 static void input_csi_dispatch_sm(struct input_ctx *);
171 static void input_csi_dispatch_sm_private(struct input_ctx *);
172 static void input_csi_dispatch_sm_graphics(struct input_ctx *);
173 static void input_csi_dispatch_winops(struct input_ctx *);
174 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
175 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
176 static void input_csi_dispatch_sgr(struct input_ctx *);
177 static int input_dcs_dispatch(struct input_ctx *);
178 static int input_top_bit_set(struct input_ctx *);
179 static int input_end_bel(struct input_ctx *);
180
181 /* Command table comparison function. */
182 static int input_table_compare(const void *, const void *);
183
184 /* Command table entry. */
185 struct input_table_entry {
186 int ch;
187 const char *interm;
188 int type;
189 };
190
191 /* Escape commands. */
192 enum input_esc_type {
193 INPUT_ESC_DECALN,
194 INPUT_ESC_DECKPAM,
195 INPUT_ESC_DECKPNM,
196 INPUT_ESC_DECRC,
197 INPUT_ESC_DECSC,
198 INPUT_ESC_HTS,
199 INPUT_ESC_IND,
200 INPUT_ESC_NEL,
201 INPUT_ESC_RI,
202 INPUT_ESC_RIS,
203 INPUT_ESC_SCSG0_OFF,
204 INPUT_ESC_SCSG0_ON,
205 INPUT_ESC_SCSG1_OFF,
206 INPUT_ESC_SCSG1_ON,
207 INPUT_ESC_ST
208 };
209
210 /* Escape command table. */
211 static const struct input_table_entry input_esc_table[] = {
212 { '0', "(", INPUT_ESC_SCSG0_ON },
213 { '0', ")", INPUT_ESC_SCSG1_ON },
214 { '7', "", INPUT_ESC_DECSC },
215 { '8', "", INPUT_ESC_DECRC },
216 { '8', "#", INPUT_ESC_DECALN },
217 { '=', "", INPUT_ESC_DECKPAM },
218 { '>', "", INPUT_ESC_DECKPNM },
219 { 'B', "(", INPUT_ESC_SCSG0_OFF },
220 { 'B', ")", INPUT_ESC_SCSG1_OFF },
221 { 'D', "", INPUT_ESC_IND },
222 { 'E', "", INPUT_ESC_NEL },
223 { 'H', "", INPUT_ESC_HTS },
224 { 'M', "", INPUT_ESC_RI },
225 { '\\', "", INPUT_ESC_ST },
226 { 'c', "", INPUT_ESC_RIS },
227 };
228
229 /* Control (CSI) commands. */
230 enum input_csi_type {
231 INPUT_CSI_CBT,
232 INPUT_CSI_CNL,
233 INPUT_CSI_CPL,
234 INPUT_CSI_CUB,
235 INPUT_CSI_CUD,
236 INPUT_CSI_CUF,
237 INPUT_CSI_CUP,
238 INPUT_CSI_CUU,
239 INPUT_CSI_DA,
240 INPUT_CSI_DA_TWO,
241 INPUT_CSI_DCH,
242 INPUT_CSI_DECSCUSR,
243 INPUT_CSI_DECSTBM,
244 INPUT_CSI_DL,
245 INPUT_CSI_DSR,
246 INPUT_CSI_ECH,
247 INPUT_CSI_ED,
248 INPUT_CSI_EL,
249 INPUT_CSI_HPA,
250 INPUT_CSI_ICH,
251 INPUT_CSI_IL,
252 INPUT_CSI_MODOFF,
253 INPUT_CSI_MODSET,
254 INPUT_CSI_RCP,
255 INPUT_CSI_REP,
256 INPUT_CSI_RM,
257 INPUT_CSI_RM_PRIVATE,
258 INPUT_CSI_SCP,
259 INPUT_CSI_SD,
260 INPUT_CSI_SGR,
261 INPUT_CSI_SM,
262 INPUT_CSI_SM_PRIVATE,
263 INPUT_CSI_SM_GRAPHICS,
264 INPUT_CSI_SU,
265 INPUT_CSI_TBC,
266 INPUT_CSI_VPA,
267 INPUT_CSI_WINOPS,
268 INPUT_CSI_XDA
269 };
270
271 /* Control (CSI) command table. */
272 static const struct input_table_entry input_csi_table[] = {
273 { '@', "", INPUT_CSI_ICH },
274 { 'A', "", INPUT_CSI_CUU },
275 { 'B', "", INPUT_CSI_CUD },
276 { 'C', "", INPUT_CSI_CUF },
277 { 'D', "", INPUT_CSI_CUB },
278 { 'E', "", INPUT_CSI_CNL },
279 { 'F', "", INPUT_CSI_CPL },
280 { 'G', "", INPUT_CSI_HPA },
281 { 'H', "", INPUT_CSI_CUP },
282 { 'J', "", INPUT_CSI_ED },
283 { 'K', "", INPUT_CSI_EL },
284 { 'L', "", INPUT_CSI_IL },
285 { 'M', "", INPUT_CSI_DL },
286 { 'P', "", INPUT_CSI_DCH },
287 { 'S', "", INPUT_CSI_SU },
288 { 'S', "?", INPUT_CSI_SM_GRAPHICS },
289 { 'T', "", INPUT_CSI_SD },
290 { 'X', "", INPUT_CSI_ECH },
291 { 'Z', "", INPUT_CSI_CBT },
292 { '`', "", INPUT_CSI_HPA },
293 { 'b', "", INPUT_CSI_REP },
294 { 'c', "", INPUT_CSI_DA },
295 { 'c', ">", INPUT_CSI_DA_TWO },
296 { 'd', "", INPUT_CSI_VPA },
297 { 'f', "", INPUT_CSI_CUP },
298 { 'g', "", INPUT_CSI_TBC },
299 { 'h', "", INPUT_CSI_SM },
300 { 'h', "?", INPUT_CSI_SM_PRIVATE },
301 { 'l', "", INPUT_CSI_RM },
302 { 'l', "?", INPUT_CSI_RM_PRIVATE },
303 { 'm', "", INPUT_CSI_SGR },
304 { 'm', ">", INPUT_CSI_MODSET },
305 { 'n', "", INPUT_CSI_DSR },
306 { 'n', ">", INPUT_CSI_MODOFF },
307 { 'q', " ", INPUT_CSI_DECSCUSR },
308 { 'q', ">", INPUT_CSI_XDA },
309 { 'r', "", INPUT_CSI_DECSTBM },
310 { 's', "", INPUT_CSI_SCP },
311 { 't', "", INPUT_CSI_WINOPS },
312 { 'u', "", INPUT_CSI_RCP }
313 };
314
315 /* Input transition. */
316 struct input_transition {
317 int first;
318 int last;
319
320 int (*handler)(struct input_ctx *);
321 const struct input_state *state;
322 };
323
324 /* Input state. */
325 struct input_state {
326 const char *name;
327 void (*enter)(struct input_ctx *);
328 void (*exit)(struct input_ctx *);
329 const struct input_transition *transitions;
330 };
331
332 /* State transitions available from all states. */
333 #define INPUT_STATE_ANYWHERE \
334 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
335 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
336 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
337
338 /* Forward declarations of state tables. */
339 static const struct input_transition input_state_ground_table[];
340 static const struct input_transition input_state_esc_enter_table[];
341 static const struct input_transition input_state_esc_intermediate_table[];
342 static const struct input_transition input_state_csi_enter_table[];
343 static const struct input_transition input_state_csi_parameter_table[];
344 static const struct input_transition input_state_csi_intermediate_table[];
345 static const struct input_transition input_state_csi_ignore_table[];
346 static const struct input_transition input_state_dcs_enter_table[];
347 static const struct input_transition input_state_dcs_parameter_table[];
348 static const struct input_transition input_state_dcs_intermediate_table[];
349 static const struct input_transition input_state_dcs_handler_table[];
350 static const struct input_transition input_state_dcs_escape_table[];
351 static const struct input_transition input_state_dcs_ignore_table[];
352 static const struct input_transition input_state_osc_string_table[];
353 static const struct input_transition input_state_apc_string_table[];
354 static const struct input_transition input_state_rename_string_table[];
355 static const struct input_transition input_state_consume_st_table[];
356
357 /* ground state definition. */
358 static const struct input_state input_state_ground = {
359 "ground",
360 input_ground, NULL,
361 input_state_ground_table
362 };
363
364 /* esc_enter state definition. */
365 static const struct input_state input_state_esc_enter = {
366 "esc_enter",
367 input_clear, NULL,
368 input_state_esc_enter_table
369 };
370
371 /* esc_intermediate state definition. */
372 static const struct input_state input_state_esc_intermediate = {
373 "esc_intermediate",
374 NULL, NULL,
375 input_state_esc_intermediate_table
376 };
377
378 /* csi_enter state definition. */
379 static const struct input_state input_state_csi_enter = {
380 "csi_enter",
381 input_clear, NULL,
382 input_state_csi_enter_table
383 };
384
385 /* csi_parameter state definition. */
386 static const struct input_state input_state_csi_parameter = {
387 "csi_parameter",
388 NULL, NULL,
389 input_state_csi_parameter_table
390 };
391
392 /* csi_intermediate state definition. */
393 static const struct input_state input_state_csi_intermediate = {
394 "csi_intermediate",
395 NULL, NULL,
396 input_state_csi_intermediate_table
397 };
398
399 /* csi_ignore state definition. */
400 static const struct input_state input_state_csi_ignore = {
401 "csi_ignore",
402 NULL, NULL,
403 input_state_csi_ignore_table
404 };
405
406 /* dcs_enter state definition. */
407 static const struct input_state input_state_dcs_enter = {
408 "dcs_enter",
409 input_enter_dcs, NULL,
410 input_state_dcs_enter_table
411 };
412
413 /* dcs_parameter state definition. */
414 static const struct input_state input_state_dcs_parameter = {
415 "dcs_parameter",
416 NULL, NULL,
417 input_state_dcs_parameter_table
418 };
419
420 /* dcs_intermediate state definition. */
421 static const struct input_state input_state_dcs_intermediate = {
422 "dcs_intermediate",
423 NULL, NULL,
424 input_state_dcs_intermediate_table
425 };
426
427 /* dcs_handler state definition. */
428 static const struct input_state input_state_dcs_handler = {
429 "dcs_handler",
430 NULL, NULL,
431 input_state_dcs_handler_table
432 };
433
434 /* dcs_escape state definition. */
435 static const struct input_state input_state_dcs_escape = {
436 "dcs_escape",
437 NULL, NULL,
438 input_state_dcs_escape_table
439 };
440
441 /* dcs_ignore state definition. */
442 static const struct input_state input_state_dcs_ignore = {
443 "dcs_ignore",
444 NULL, NULL,
445 input_state_dcs_ignore_table
446 };
447
448 /* osc_string state definition. */
449 static const struct input_state input_state_osc_string = {
450 "osc_string",
451 input_enter_osc, input_exit_osc,
452 input_state_osc_string_table
453 };
454
455 /* apc_string state definition. */
456 static const struct input_state input_state_apc_string = {
457 "apc_string",
458 input_enter_apc, input_exit_apc,
459 input_state_apc_string_table
460 };
461
462 /* rename_string state definition. */
463 static const struct input_state input_state_rename_string = {
464 "rename_string",
465 input_enter_rename, input_exit_rename,
466 input_state_rename_string_table
467 };
468
469 /* consume_st state definition. */
470 static const struct input_state input_state_consume_st = {
471 "consume_st",
472 input_enter_rename, NULL, /* rename also waits for ST */
473 input_state_consume_st_table
474 };
475
476 /* ground state table. */
477 static const struct input_transition input_state_ground_table[] = {
478 INPUT_STATE_ANYWHERE,
479
480 { 0x00, 0x17, input_c0_dispatch, NULL },
481 { 0x19, 0x19, input_c0_dispatch, NULL },
482 { 0x1c, 0x1f, input_c0_dispatch, NULL },
483 { 0x20, 0x7e, input_print, NULL },
484 { 0x7f, 0x7f, NULL, NULL },
485 { 0x80, 0xff, input_top_bit_set, NULL },
486
487 { -1, -1, NULL, NULL }
488 };
489
490 /* esc_enter state table. */
491 static const struct input_transition input_state_esc_enter_table[] = {
492 INPUT_STATE_ANYWHERE,
493
494 { 0x00, 0x17, input_c0_dispatch, NULL },
495 { 0x19, 0x19, input_c0_dispatch, NULL },
496 { 0x1c, 0x1f, input_c0_dispatch, NULL },
497 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
498 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
499 { 0x50, 0x50, NULL, &input_state_dcs_enter },
500 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
501 { 0x58, 0x58, NULL, &input_state_consume_st },
502 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
503 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
504 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
505 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
506 { 0x5d, 0x5d, NULL, &input_state_osc_string },
507 { 0x5e, 0x5e, NULL, &input_state_consume_st },
508 { 0x5f, 0x5f, NULL, &input_state_apc_string },
509 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
510 { 0x6b, 0x6b, NULL, &input_state_rename_string },
511 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
512 { 0x7f, 0xff, NULL, NULL },
513
514 { -1, -1, NULL, NULL }
515 };
516
517 /* esc_intermediate state table. */
518 static const struct input_transition input_state_esc_intermediate_table[] = {
519 INPUT_STATE_ANYWHERE,
520
521 { 0x00, 0x17, input_c0_dispatch, NULL },
522 { 0x19, 0x19, input_c0_dispatch, NULL },
523 { 0x1c, 0x1f, input_c0_dispatch, NULL },
524 { 0x20, 0x2f, input_intermediate, NULL },
525 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
526 { 0x7f, 0xff, NULL, NULL },
527
528 { -1, -1, NULL, NULL }
529 };
530
531 /* csi_enter state table. */
532 static const struct input_transition input_state_csi_enter_table[] = {
533 INPUT_STATE_ANYWHERE,
534
535 { 0x00, 0x17, input_c0_dispatch, NULL },
536 { 0x19, 0x19, input_c0_dispatch, NULL },
537 { 0x1c, 0x1f, input_c0_dispatch, NULL },
538 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
539 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
540 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
541 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
542 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
543 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
544 { 0x7f, 0xff, NULL, NULL },
545
546 { -1, -1, NULL, NULL }
547 };
548
549 /* csi_parameter state table. */
550 static const struct input_transition input_state_csi_parameter_table[] = {
551 INPUT_STATE_ANYWHERE,
552
553 { 0x00, 0x17, input_c0_dispatch, NULL },
554 { 0x19, 0x19, input_c0_dispatch, NULL },
555 { 0x1c, 0x1f, input_c0_dispatch, NULL },
556 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
557 { 0x30, 0x39, input_parameter, NULL },
558 { 0x3a, 0x3a, input_parameter, NULL },
559 { 0x3b, 0x3b, input_parameter, NULL },
560 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
561 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
562 { 0x7f, 0xff, NULL, NULL },
563
564 { -1, -1, NULL, NULL }
565 };
566
567 /* csi_intermediate state table. */
568 static const struct input_transition input_state_csi_intermediate_table[] = {
569 INPUT_STATE_ANYWHERE,
570
571 { 0x00, 0x17, input_c0_dispatch, NULL },
572 { 0x19, 0x19, input_c0_dispatch, NULL },
573 { 0x1c, 0x1f, input_c0_dispatch, NULL },
574 { 0x20, 0x2f, input_intermediate, NULL },
575 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
576 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
577 { 0x7f, 0xff, NULL, NULL },
578
579 { -1, -1, NULL, NULL }
580 };
581
582 /* csi_ignore state table. */
583 static const struct input_transition input_state_csi_ignore_table[] = {
584 INPUT_STATE_ANYWHERE,
585
586 { 0x00, 0x17, input_c0_dispatch, NULL },
587 { 0x19, 0x19, input_c0_dispatch, NULL },
588 { 0x1c, 0x1f, input_c0_dispatch, NULL },
589 { 0x20, 0x3f, NULL, NULL },
590 { 0x40, 0x7e, NULL, &input_state_ground },
591 { 0x7f, 0xff, NULL, NULL },
592
593 { -1, -1, NULL, NULL }
594 };
595
596 /* dcs_enter state table. */
597 static const struct input_transition input_state_dcs_enter_table[] = {
598 INPUT_STATE_ANYWHERE,
599
600 { 0x00, 0x17, NULL, NULL },
601 { 0x19, 0x19, NULL, NULL },
602 { 0x1c, 0x1f, NULL, NULL },
603 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
604 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
605 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
606 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
607 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
608 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
609 { 0x7f, 0xff, NULL, NULL },
610
611 { -1, -1, NULL, NULL }
612 };
613
614 /* dcs_parameter state table. */
615 static const struct input_transition input_state_dcs_parameter_table[] = {
616 INPUT_STATE_ANYWHERE,
617
618 { 0x00, 0x17, NULL, NULL },
619 { 0x19, 0x19, NULL, NULL },
620 { 0x1c, 0x1f, NULL, NULL },
621 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
622 { 0x30, 0x39, input_parameter, NULL },
623 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
624 { 0x3b, 0x3b, input_parameter, NULL },
625 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
626 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
627 { 0x7f, 0xff, NULL, NULL },
628
629 { -1, -1, NULL, NULL }
630 };
631
632 /* dcs_intermediate state table. */
633 static const struct input_transition input_state_dcs_intermediate_table[] = {
634 INPUT_STATE_ANYWHERE,
635
636 { 0x00, 0x17, NULL, NULL },
637 { 0x19, 0x19, NULL, NULL },
638 { 0x1c, 0x1f, NULL, NULL },
639 { 0x20, 0x2f, input_intermediate, NULL },
640 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
641 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
642 { 0x7f, 0xff, NULL, NULL },
643
644 { -1, -1, NULL, NULL }
645 };
646
647 /* dcs_handler state table. */
648 static const struct input_transition input_state_dcs_handler_table[] = {
649 /* No INPUT_STATE_ANYWHERE */
650
651 { 0x00, 0x1a, input_input, NULL },
652 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
653 { 0x1c, 0xff, input_input, NULL },
654
655 { -1, -1, NULL, NULL }
656 };
657
658 /* dcs_escape state table. */
659 static const struct input_transition input_state_dcs_escape_table[] = {
660 /* No INPUT_STATE_ANYWHERE */
661
662 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
663 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
664 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
665
666 { -1, -1, NULL, NULL }
667 };
668
669 /* dcs_ignore state table. */
670 static const struct input_transition input_state_dcs_ignore_table[] = {
671 INPUT_STATE_ANYWHERE,
672
673 { 0x00, 0x17, NULL, NULL },
674 { 0x19, 0x19, NULL, NULL },
675 { 0x1c, 0x1f, NULL, NULL },
676 { 0x20, 0xff, NULL, NULL },
677
678 { -1, -1, NULL, NULL }
679 };
680
681 /* osc_string state table. */
682 static const struct input_transition input_state_osc_string_table[] = {
683 INPUT_STATE_ANYWHERE,
684
685 { 0x00, 0x06, NULL, NULL },
686 { 0x07, 0x07, input_end_bel, &input_state_ground },
687 { 0x08, 0x17, NULL, NULL },
688 { 0x19, 0x19, NULL, NULL },
689 { 0x1c, 0x1f, NULL, NULL },
690 { 0x20, 0xff, input_input, NULL },
691
692 { -1, -1, NULL, NULL }
693 };
694
695 /* apc_string state table. */
696 static const struct input_transition input_state_apc_string_table[] = {
697 INPUT_STATE_ANYWHERE,
698
699 { 0x00, 0x17, NULL, NULL },
700 { 0x19, 0x19, NULL, NULL },
701 { 0x1c, 0x1f, NULL, NULL },
702 { 0x20, 0xff, input_input, NULL },
703
704 { -1, -1, NULL, NULL }
705 };
706
707 /* rename_string state table. */
708 static const struct input_transition input_state_rename_string_table[] = {
709 INPUT_STATE_ANYWHERE,
710
711 { 0x00, 0x17, NULL, NULL },
712 { 0x19, 0x19, NULL, NULL },
713 { 0x1c, 0x1f, NULL, NULL },
714 { 0x20, 0xff, input_input, NULL },
715
716 { -1, -1, NULL, NULL }
717 };
718
719 /* consume_st state table. */
720 static const struct input_transition input_state_consume_st_table[] = {
721 INPUT_STATE_ANYWHERE,
722
723 { 0x00, 0x17, NULL, NULL },
724 { 0x19, 0x19, NULL, NULL },
725 { 0x1c, 0x1f, NULL, NULL },
726 { 0x20, 0xff, NULL, NULL },
727
728 { -1, -1, NULL, NULL }
729 };
730
731 /* Input table compare. */
732 static int
733 input_table_compare(const void *key, const void *value)
734 {
735 const struct input_ctx *ictx = key;
736 const struct input_table_entry *entry = value;
737
738 if (ictx->ch != entry->ch)
739 return (ictx->ch - entry->ch);
740 return (strcmp(ictx->interm_buf, entry->interm));
741 }
742
743 /*
744 * Timer - if this expires then have been waiting for a terminator for too
745 * long, so reset to ground.
746 */
747 static void
748 input_timer_callback(__unused int fd, __unused short events, void *arg)
749 {
750 struct input_ctx *ictx = arg;
751
752 log_debug("%s: %s expired" , __func__, ictx->state->name);
753 input_reset(ictx, 0);
754 }
755
756 /* Start the timer. */
757 static void
758 input_start_timer(struct input_ctx *ictx)
759 {
760 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
761
762 event_del(&ictx->timer);
763 event_add(&ictx->timer, &tv);
764 }
765
766 /* Reset cell state to default. */
767 static void
768 input_reset_cell(struct input_ctx *ictx)
769 {
770 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
771 ictx->cell.set = 0;
772 ictx->cell.g0set = ictx->cell.g1set = 0;
773
774 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
775 ictx->old_cx = 0;
776 ictx->old_cy = 0;
777 }
778
779 /* Save screen state. */
780 static void
781 input_save_state(struct input_ctx *ictx)
782 {
783 struct screen_write_ctx *sctx = &ictx->ctx;
784 struct screen *s = sctx->s;
785
786 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
787 ictx->old_cx = s->cx;
788 ictx->old_cy = s->cy;
789 ictx->old_mode = s->mode;
790 }
791
792 /* Restore screen state. */
793 static void
794 input_restore_state(struct input_ctx *ictx)
795 {
796 struct screen_write_ctx *sctx = &ictx->ctx;
797
798 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
799 if (ictx->old_mode & MODE_ORIGIN)
800 screen_write_mode_set(sctx, MODE_ORIGIN);
801 else
802 screen_write_mode_clear(sctx, MODE_ORIGIN);
803 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
804 }
805
806 /* Initialise input parser. */
807 struct input_ctx *
808 input_init(struct window_pane *wp, struct bufferevent *bev,
809 struct colour_palette *palette)
810 {
811 struct input_ctx *ictx;
812
813 ictx = xcalloc(1, sizeof *ictx);
814 ictx->wp = wp;
815 ictx->event = bev;
816 ictx->palette = palette;
817
818 ictx->input_space = INPUT_BUF_START;
819 ictx->input_buf = xmalloc(INPUT_BUF_START);
820
821 ictx->since_ground = evbuffer_new();
822 if (ictx->since_ground == NULL)
823 fatalx("out of memory");
824
825 evtimer_set(&ictx->timer, input_timer_callback, ictx);
826
827 input_reset(ictx, 0);
828 return (ictx);
829 }
830
831 /* Destroy input parser. */
832 void
833 input_free(struct input_ctx *ictx)
834 {
835 u_int i;
836
837 for (i = 0; i < ictx->param_list_len; i++) {
838 if (ictx->param_list[i].type == INPUT_STRING)
839 free(ictx->param_list[i].str);
840 }
841
842 event_del(&ictx->timer);
843
844 free(ictx->input_buf);
845 evbuffer_free(ictx->since_ground);
846
847 free(ictx);
848 }
849
850 /* Reset input state and clear screen. */
851 void
852 input_reset(struct input_ctx *ictx, int clear)
853 {
854 struct screen_write_ctx *sctx = &ictx->ctx;
855 struct window_pane *wp = ictx->wp;
856
857 input_reset_cell(ictx);
858
859 if (clear && wp != NULL) {
860 if (TAILQ_EMPTY(&wp->modes))
861 screen_write_start_pane(sctx, wp, &wp->base);
862 else
863 screen_write_start(sctx, &wp->base);
864 screen_write_reset(sctx);
865 screen_write_stop(sctx);
866 }
867
868 input_clear(ictx);
869
870 ictx->last = -1;
871
872 ictx->state = &input_state_ground;
873 ictx->flags = 0;
874 }
875
876 /* Return pending data. */
877 struct evbuffer *
878 input_pending(struct input_ctx *ictx)
879 {
880 return (ictx->since_ground);
881 }
882
883 /* Change input state. */
884 static void
885 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
886 {
887 if (ictx->state->exit != NULL)
888 ictx->state->exit(ictx);
889 ictx->state = itr->state;
890 if (ictx->state->enter != NULL)
891 ictx->state->enter(ictx);
892 }
893
894 /* Parse data. */
895 static void
896 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
897 {
898 struct screen_write_ctx *sctx = &ictx->ctx;
899 const struct input_state *state = NULL;
900 const struct input_transition *itr = NULL;
901 size_t off = 0;
902
903 /* Parse the input. */
904 while (off < len) {
905 ictx->ch = buf[off++];
906
907 /* Find the transition. */
908 if (ictx->state != state ||
909 itr == NULL ||
910 ictx->ch < itr->first ||
911 ictx->ch > itr->last) {
912 itr = ictx->state->transitions;
913 while (itr->first != -1 && itr->last != -1) {
914 if (ictx->ch >= itr->first &&
915 ictx->ch <= itr->last)
916 break;
917 itr++;
918 }
919 if (itr->first == -1 || itr->last == -1) {
920 /* No transition? Eh? */
921 fatalx("no transition from state");
922 }
923 }
924 state = ictx->state;
925
926 /*
927 * Any state except print stops the current collection. This is
928 * an optimization to avoid checking if the attributes have
929 * changed for every character. It will stop unnecessarily for
930 * sequences that don't make a terminal change, but they should
931 * be the minority.
932 */
933 if (itr->handler != input_print)
934 screen_write_collect_end(sctx);
935
936 /*
937 * Execute the handler, if any. Don't switch state if it
938 * returns non-zero.
939 */
940 if (itr->handler != NULL && itr->handler(ictx) != 0)
941 continue;
942
943 /* And switch state, if necessary. */
944 if (itr->state != NULL)
945 input_set_state(ictx, itr);
946
947 /* If not in ground state, save input. */
948 if (ictx->state != &input_state_ground)
949 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
950 }
951 }
952
953 /* Parse input from pane. */
954 void
955 input_parse_pane(struct window_pane *wp)
956 {
957 void *new_data;
958 size_t new_size;
959
960 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
961 input_parse_buffer(wp, new_data, new_size);
962 window_pane_update_used_data(wp, &wp->offset, new_size);
963 }
964
965 /* Parse given input. */
966 void
967 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
968 {
969 struct input_ctx *ictx = wp->ictx;
970 struct screen_write_ctx *sctx = &ictx->ctx;
971
972 if (len == 0)
973 return;
974
975 window_update_activity(wp->window);
976 wp->flags |= PANE_CHANGED;
977
978 /* Flag new input while in a mode. */
979 if (!TAILQ_EMPTY(&wp->modes))
980 wp->flags |= PANE_UNSEENCHANGES;
981
982 /* NULL wp if there is a mode set as don't want to update the tty. */
983 if (TAILQ_EMPTY(&wp->modes))
984 screen_write_start_pane(sctx, wp, &wp->base);
985 else
986 screen_write_start(sctx, &wp->base);
987
988 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
989 ictx->state->name, len, (int)len, buf);
990
991 input_parse(ictx, buf, len);
992 screen_write_stop(sctx);
993 }
994
995 /* Parse given input for screen. */
996 void
997 input_parse_screen(struct input_ctx *ictx, struct screen *s,
998 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
999 {
1000 struct screen_write_ctx *sctx = &ictx->ctx;
1001
1002 if (len == 0)
1003 return;
1004
1005 screen_write_start_callback(sctx, s, cb, arg);
1006 input_parse(ictx, buf, len);
1007 screen_write_stop(sctx);
1008 }
1009
1010 /* Split the parameter list (if any). */
1011 static int
1012 input_split(struct input_ctx *ictx)
1013 {
1014 const char *errstr;
1015 char *ptr, *out;
1016 struct input_param *ip;
1017 u_int i;
1018
1019 for (i = 0; i < ictx->param_list_len; i++) {
1020 if (ictx->param_list[i].type == INPUT_STRING)
1021 free(ictx->param_list[i].str);
1022 }
1023 ictx->param_list_len = 0;
1024
1025 if (ictx->param_len == 0)
1026 return (0);
1027 ip = &ictx->param_list[0];
1028
1029 ptr = ictx->param_buf;
1030 while ((out = strsep(&ptr, ";")) != NULL) {
1031 if (*out == '\0')
1032 ip->type = INPUT_MISSING;
1033 else {
1034 if (strchr(out, ':') != NULL) {
1035 ip->type = INPUT_STRING;
1036 ip->str = xstrdup(out);
1037 } else {
1038 ip->type = INPUT_NUMBER;
1039 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1040 if (errstr != NULL)
1041 return (-1);
1042 }
1043 }
1044 ip = &ictx->param_list[++ictx->param_list_len];
1045 if (ictx->param_list_len == nitems(ictx->param_list))
1046 return (-1);
1047 }
1048
1049 for (i = 0; i < ictx->param_list_len; i++) {
1050 ip = &ictx->param_list[i];
1051 if (ip->type == INPUT_MISSING)
1052 log_debug("parameter %u: missing", i);
1053 else if (ip->type == INPUT_STRING)
1054 log_debug("parameter %u: string %s", i, ip->str);
1055 else if (ip->type == INPUT_NUMBER)
1056 log_debug("parameter %u: number %d", i, ip->num);
1057 }
1058
1059 return (0);
1060 }
1061
1062 /* Get an argument or return default value. */
1063 static int
1064 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1065 {
1066 struct input_param *ip;
1067 int retval;
1068
1069 if (validx >= ictx->param_list_len)
1070 return (defval);
1071 ip = &ictx->param_list[validx];
1072 if (ip->type == INPUT_MISSING)
1073 return (defval);
1074 if (ip->type == INPUT_STRING)
1075 return (-1);
1076 retval = ip->num;
1077 if (retval < minval)
1078 return (minval);
1079 return (retval);
1080 }
1081
1082 /* Reply to terminal query. */
1083 static void
1084 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1085 {
1086 struct bufferevent *bev = ictx->event;
1087 va_list ap;
1088 char *reply;
1089
1090 if (bev == NULL)
1091 return;
1092
1093 va_start(ap, fmt);
1094 xvasprintf(&reply, fmt, ap);
1095 va_end(ap);
1096
1097 log_debug("%s: %s", __func__, reply);
1098 bufferevent_write(bev, reply, strlen(reply));
1099 free(reply);
1100 }
1101
1102 /* Clear saved state. */
1103 static void
1104 input_clear(struct input_ctx *ictx)
1105 {
1106 event_del(&ictx->timer);
1107
1108 *ictx->interm_buf = '\0';
1109 ictx->interm_len = 0;
1110
1111 *ictx->param_buf = '\0';
1112 ictx->param_len = 0;
1113
1114 *ictx->input_buf = '\0';
1115 ictx->input_len = 0;
1116
1117 ictx->input_end = INPUT_END_ST;
1118
1119 ictx->flags &= ~INPUT_DISCARD;
1120 }
1121
1122 /* Reset for ground state. */
1123 static void
1124 input_ground(struct input_ctx *ictx)
1125 {
1126 event_del(&ictx->timer);
1127 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1128
1129 if (ictx->input_space > INPUT_BUF_START) {
1130 ictx->input_space = INPUT_BUF_START;
1131 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1132 }
1133 }
1134
1135 /* Output this character to the screen. */
1136 static int
1137 input_print(struct input_ctx *ictx)
1138 {
1139 struct screen_write_ctx *sctx = &ictx->ctx;
1140 int set;
1141
1142 ictx->utf8started = 0; /* can't be valid UTF-8 */
1143
1144 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1145 if (set == 1)
1146 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1147 else
1148 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1149
1150 utf8_set(&ictx->cell.cell.data, ictx->ch);
1151 screen_write_collect_add(sctx, &ictx->cell.cell);
1152 ictx->last = ictx->ch;
1153
1154 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1155
1156 return (0);
1157 }
1158
1159 /* Collect intermediate string. */
1160 static int
1161 input_intermediate(struct input_ctx *ictx)
1162 {
1163 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1164 ictx->flags |= INPUT_DISCARD;
1165 else {
1166 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1167 ictx->interm_buf[ictx->interm_len] = '\0';
1168 }
1169
1170 return (0);
1171 }
1172
1173 /* Collect parameter string. */
1174 static int
1175 input_parameter(struct input_ctx *ictx)
1176 {
1177 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1178 ictx->flags |= INPUT_DISCARD;
1179 else {
1180 ictx->param_buf[ictx->param_len++] = ictx->ch;
1181 ictx->param_buf[ictx->param_len] = '\0';
1182 }
1183
1184 return (0);
1185 }
1186
1187 /* Collect input string. */
1188 static int
1189 input_input(struct input_ctx *ictx)
1190 {
1191 size_t available;
1192
1193 available = ictx->input_space;
1194 while (ictx->input_len + 1 >= available) {
1195 available *= 2;
1196 if (available > INPUT_BUF_LIMIT) {
1197 ictx->flags |= INPUT_DISCARD;
1198 return (0);
1199 }
1200 ictx->input_buf = xrealloc(ictx->input_buf, available);
1201 ictx->input_space = available;
1202 }
1203 ictx->input_buf[ictx->input_len++] = ictx->ch;
1204 ictx->input_buf[ictx->input_len] = '\0';
1205
1206 return (0);
1207 }
1208
1209 /* Execute C0 control sequence. */
1210 static int
1211 input_c0_dispatch(struct input_ctx *ictx)
1212 {
1213 struct screen_write_ctx *sctx = &ictx->ctx;
1214 struct window_pane *wp = ictx->wp;
1215 struct screen *s = sctx->s;
1216
1217 ictx->utf8started = 0; /* can't be valid UTF-8 */
1218
1219 log_debug("%s: '%c'", __func__, ictx->ch);
1220
1221 switch (ictx->ch) {
1222 case '\000': /* NUL */
1223 break;
1224 case '\007': /* BEL */
1225 if (wp != NULL)
1226 alerts_queue(wp->window, WINDOW_BELL);
1227 break;
1228 case '\010': /* BS */
1229 screen_write_backspace(sctx);
1230 break;
1231 case '\011': /* HT */
1232 /* Don't tab beyond the end of the line. */
1233 if (s->cx >= screen_size_x(s) - 1)
1234 break;
1235
1236 /* Find the next tab point, or use the last column if none. */
1237 do {
1238 s->cx++;
1239 if (bit_test(s->tabs, s->cx))
1240 break;
1241 } while (s->cx < screen_size_x(s) - 1);
1242 break;
1243 case '\012': /* LF */
1244 case '\013': /* VT */
1245 case '\014': /* FF */
1246 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1247 if (s->mode & MODE_CRLF)
1248 screen_write_carriagereturn(sctx);
1249 break;
1250 case '\015': /* CR */
1251 screen_write_carriagereturn(sctx);
1252 break;
1253 case '\016': /* SO */
1254 ictx->cell.set = 1;
1255 break;
1256 case '\017': /* SI */
1257 ictx->cell.set = 0;
1258 break;
1259 default:
1260 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1261 break;
1262 }
1263
1264 ictx->last = -1;
1265 return (0);
1266 }
1267
1268 /* Execute escape sequence. */
1269 static int
1270 input_esc_dispatch(struct input_ctx *ictx)
1271 {
1272 struct screen_write_ctx *sctx = &ictx->ctx;
1273 struct screen *s = sctx->s;
1274 struct input_table_entry *entry;
1275
1276 if (ictx->flags & INPUT_DISCARD)
1277 return (0);
1278 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1279
1280 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1281 sizeof input_esc_table[0], input_table_compare);
1282 if (entry == NULL) {
1283 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1284 return (0);
1285 }
1286
1287 switch (entry->type) {
1288 case INPUT_ESC_RIS:
1289 colour_palette_clear(ictx->palette);
1290 input_reset_cell(ictx);
1291 screen_write_reset(sctx);
1292 screen_write_fullredraw(sctx);
1293 break;
1294 case INPUT_ESC_IND:
1295 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1296 break;
1297 case INPUT_ESC_NEL:
1298 screen_write_carriagereturn(sctx);
1299 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1300 break;
1301 case INPUT_ESC_HTS:
1302 if (s->cx < screen_size_x(s))
1303 bit_set(s->tabs, s->cx);
1304 break;
1305 case INPUT_ESC_RI:
1306 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1307 break;
1308 case INPUT_ESC_DECKPAM:
1309 screen_write_mode_set(sctx, MODE_KKEYPAD);
1310 break;
1311 case INPUT_ESC_DECKPNM:
1312 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1313 break;
1314 case INPUT_ESC_DECSC:
1315 input_save_state(ictx);
1316 break;
1317 case INPUT_ESC_DECRC:
1318 input_restore_state(ictx);
1319 break;
1320 case INPUT_ESC_DECALN:
1321 screen_write_alignmenttest(sctx);
1322 break;
1323 case INPUT_ESC_SCSG0_ON:
1324 ictx->cell.g0set = 1;
1325 break;
1326 case INPUT_ESC_SCSG0_OFF:
1327 ictx->cell.g0set = 0;
1328 break;
1329 case INPUT_ESC_SCSG1_ON:
1330 ictx->cell.g1set = 1;
1331 break;
1332 case INPUT_ESC_SCSG1_OFF:
1333 ictx->cell.g1set = 0;
1334 break;
1335 case INPUT_ESC_ST:
1336 /* ST terminates OSC but the state transition already did it. */
1337 break;
1338 }
1339
1340 ictx->last = -1;
1341 return (0);
1342 }
1343
1344 /* Execute control sequence. */
1345 static int
1346 input_csi_dispatch(struct input_ctx *ictx)
1347 {
1348 struct screen_write_ctx *sctx = &ictx->ctx;
1349 struct screen *s = sctx->s;
1350 struct input_table_entry *entry;
1351 int i, n, m;
1352 u_int cx, bg = ictx->cell.cell.bg;
1353
1354 if (ictx->flags & INPUT_DISCARD)
1355 return (0);
1356
1357 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
1358 ictx->interm_buf, ictx->param_buf);
1359
1360 if (input_split(ictx) != 0)
1361 return (0);
1362
1363 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1364 sizeof input_csi_table[0], input_table_compare);
1365 if (entry == NULL) {
1366 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1367 return (0);
1368 }
1369
1370 switch (entry->type) {
1371 case INPUT_CSI_CBT:
1372 /* Find the previous tab point, n times. */
1373 cx = s->cx;
1374 if (cx > screen_size_x(s) - 1)
1375 cx = screen_size_x(s) - 1;
1376 n = input_get(ictx, 0, 1, 1);
1377 if (n == -1)
1378 break;
1379 while (cx > 0 && n-- > 0) {
1380 do
1381 cx--;
1382 while (cx > 0 && !bit_test(s->tabs, cx));
1383 }
1384 s->cx = cx;
1385 break;
1386 case INPUT_CSI_CUB:
1387 n = input_get(ictx, 0, 1, 1);
1388 if (n != -1)
1389 screen_write_cursorleft(sctx, n);
1390 break;
1391 case INPUT_CSI_CUD:
1392 n = input_get(ictx, 0, 1, 1);
1393 if (n != -1)
1394 screen_write_cursordown(sctx, n);
1395 break;
1396 case INPUT_CSI_CUF:
1397 n = input_get(ictx, 0, 1, 1);
1398 if (n != -1)
1399 screen_write_cursorright(sctx, n);
1400 break;
1401 case INPUT_CSI_CUP:
1402 n = input_get(ictx, 0, 1, 1);
1403 m = input_get(ictx, 1, 1, 1);
1404 if (n != -1 && m != -1)
1405 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1406 break;
1407 case INPUT_CSI_MODSET:
1408 n = input_get(ictx, 0, 0, 0);
1409 m = input_get(ictx, 1, 0, 0);
1410 if (options_get_number(global_options, "extended-keys") == 2)
1411 break;
1412 if (n == 0 || (n == 4 && m == 0))
1413 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1414 else if (n == 4 && (m == 1 || m == 2))
1415 screen_write_mode_set(sctx, MODE_KEXTENDED);
1416 break;
1417 case INPUT_CSI_MODOFF:
1418 n = input_get(ictx, 0, 0, 0);
1419 if (n == 4)
1420 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1421 break;
1422 case INPUT_CSI_WINOPS:
1423 input_csi_dispatch_winops(ictx);
1424 break;
1425 case INPUT_CSI_CUU:
1426 n = input_get(ictx, 0, 1, 1);
1427 if (n != -1)
1428 screen_write_cursorup(sctx, n);
1429 break;
1430 case INPUT_CSI_CNL:
1431 n = input_get(ictx, 0, 1, 1);
1432 if (n != -1) {
1433 screen_write_carriagereturn(sctx);
1434 screen_write_cursordown(sctx, n);
1435 }
1436 break;
1437 case INPUT_CSI_CPL:
1438 n = input_get(ictx, 0, 1, 1);
1439 if (n != -1) {
1440 screen_write_carriagereturn(sctx);
1441 screen_write_cursorup(sctx, n);
1442 }
1443 break;
1444 case INPUT_CSI_DA:
1445 switch (input_get(ictx, 0, 0, 0)) {
1446 case -1:
1447 break;
1448 case 0:
1449 #ifdef ENABLE_SIXEL
1450 input_reply(ictx, "\033[?1;2;4c");
1451 #else
1452 input_reply(ictx, "\033[?1;2c");
1453 #endif
1454 break;
1455 default:
1456 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1457 break;
1458 }
1459 break;
1460 case INPUT_CSI_DA_TWO:
1461 switch (input_get(ictx, 0, 0, 0)) {
1462 case -1:
1463 break;
1464 case 0:
1465 input_reply(ictx, "\033[>84;0;0c");
1466 break;
1467 default:
1468 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1469 break;
1470 }
1471 break;
1472 case INPUT_CSI_ECH:
1473 n = input_get(ictx, 0, 1, 1);
1474 if (n != -1)
1475 screen_write_clearcharacter(sctx, n, bg);
1476 break;
1477 case INPUT_CSI_DCH:
1478 n = input_get(ictx, 0, 1, 1);
1479 if (n != -1)
1480 screen_write_deletecharacter(sctx, n, bg);
1481 break;
1482 case INPUT_CSI_DECSTBM:
1483 n = input_get(ictx, 0, 1, 1);
1484 m = input_get(ictx, 1, 1, screen_size_y(s));
1485 if (n != -1 && m != -1)
1486 screen_write_scrollregion(sctx, n - 1, m - 1);
1487 break;
1488 case INPUT_CSI_DL:
1489 n = input_get(ictx, 0, 1, 1);
1490 if (n != -1)
1491 screen_write_deleteline(sctx, n, bg);
1492 break;
1493 case INPUT_CSI_DSR:
1494 switch (input_get(ictx, 0, 0, 0)) {
1495 case -1:
1496 break;
1497 case 5:
1498 input_reply(ictx, "\033[0n");
1499 break;
1500 case 6:
1501 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1502 break;
1503 default:
1504 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1505 break;
1506 }
1507 break;
1508 case INPUT_CSI_ED:
1509 switch (input_get(ictx, 0, 0, 0)) {
1510 case -1:
1511 break;
1512 case 0:
1513 screen_write_clearendofscreen(sctx, bg);
1514 break;
1515 case 1:
1516 screen_write_clearstartofscreen(sctx, bg);
1517 break;
1518 case 2:
1519 screen_write_clearscreen(sctx, bg);
1520 break;
1521 case 3:
1522 if (input_get(ictx, 1, 0, 0) == 0) {
1523 /*
1524 * Linux console extension to clear history
1525 * (for example before locking the screen).
1526 */
1527 screen_write_clearhistory(sctx);
1528 }
1529 break;
1530 default:
1531 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1532 break;
1533 }
1534 break;
1535 case INPUT_CSI_EL:
1536 switch (input_get(ictx, 0, 0, 0)) {
1537 case -1:
1538 break;
1539 case 0:
1540 screen_write_clearendofline(sctx, bg);
1541 break;
1542 case 1:
1543 screen_write_clearstartofline(sctx, bg);
1544 break;
1545 case 2:
1546 screen_write_clearline(sctx, bg);
1547 break;
1548 default:
1549 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1550 break;
1551 }
1552 break;
1553 case INPUT_CSI_HPA:
1554 n = input_get(ictx, 0, 1, 1);
1555 if (n != -1)
1556 screen_write_cursormove(sctx, n - 1, -1, 1);
1557 break;
1558 case INPUT_CSI_ICH:
1559 n = input_get(ictx, 0, 1, 1);
1560 if (n != -1)
1561 screen_write_insertcharacter(sctx, n, bg);
1562 break;
1563 case INPUT_CSI_IL:
1564 n = input_get(ictx, 0, 1, 1);
1565 if (n != -1)
1566 screen_write_insertline(sctx, n, bg);
1567 break;
1568 case INPUT_CSI_REP:
1569 n = input_get(ictx, 0, 1, 1);
1570 if (n == -1)
1571 break;
1572
1573 m = screen_size_x(s) - s->cx;
1574 if (n > m)
1575 n = m;
1576
1577 if (ictx->last == -1)
1578 break;
1579 ictx->ch = ictx->last;
1580
1581 for (i = 0; i < n; i++)
1582 input_print(ictx);
1583 break;
1584 case INPUT_CSI_RCP:
1585 input_restore_state(ictx);
1586 break;
1587 case INPUT_CSI_RM:
1588 input_csi_dispatch_rm(ictx);
1589 break;
1590 case INPUT_CSI_RM_PRIVATE:
1591 input_csi_dispatch_rm_private(ictx);
1592 break;
1593 case INPUT_CSI_SCP:
1594 input_save_state(ictx);
1595 break;
1596 case INPUT_CSI_SGR:
1597 input_csi_dispatch_sgr(ictx);
1598 break;
1599 case INPUT_CSI_SM:
1600 input_csi_dispatch_sm(ictx);
1601 break;
1602 case INPUT_CSI_SM_PRIVATE:
1603 input_csi_dispatch_sm_private(ictx);
1604 break;
1605 case INPUT_CSI_SM_GRAPHICS:
1606 input_csi_dispatch_sm_graphics(ictx);
1607 break;
1608 case INPUT_CSI_SU:
1609 n = input_get(ictx, 0, 1, 1);
1610 if (n != -1)
1611 screen_write_scrollup(sctx, n, bg);
1612 break;
1613 case INPUT_CSI_SD:
1614 n = input_get(ictx, 0, 1, 1);
1615 if (n != -1)
1616 screen_write_scrolldown(sctx, n, bg);
1617 break;
1618 case INPUT_CSI_TBC:
1619 switch (input_get(ictx, 0, 0, 0)) {
1620 case -1:
1621 break;
1622 case 0:
1623 if (s->cx < screen_size_x(s))
1624 bit_clear(s->tabs, s->cx);
1625 break;
1626 case 3:
1627 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1628 break;
1629 default:
1630 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1631 break;
1632 }
1633 break;
1634 case INPUT_CSI_VPA:
1635 n = input_get(ictx, 0, 1, 1);
1636 if (n != -1)
1637 screen_write_cursormove(sctx, -1, n - 1, 1);
1638 break;
1639 case INPUT_CSI_DECSCUSR:
1640 n = input_get(ictx, 0, 0, 0);
1641 if (n != -1)
1642 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1643 break;
1644 case INPUT_CSI_XDA:
1645 n = input_get(ictx, 0, 0, 0);
1646 if (n == 0)
1647 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1648 break;
1649
1650 }
1651
1652 ictx->last = -1;
1653 return (0);
1654 }
1655
1656 /* Handle CSI RM. */
1657 static void
1658 input_csi_dispatch_rm(struct input_ctx *ictx)
1659 {
1660 struct screen_write_ctx *sctx = &ictx->ctx;
1661 u_int i;
1662
1663 for (i = 0; i < ictx->param_list_len; i++) {
1664 switch (input_get(ictx, i, 0, -1)) {
1665 case -1:
1666 break;
1667 case 4: /* IRM */
1668 screen_write_mode_clear(sctx, MODE_INSERT);
1669 break;
1670 case 34:
1671 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1672 break;
1673 default:
1674 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1675 break;
1676 }
1677 }
1678 }
1679
1680 /* Handle CSI private RM. */
1681 static void
1682 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1683 {
1684 struct screen_write_ctx *sctx = &ictx->ctx;
1685 struct grid_cell *gc = &ictx->cell.cell;
1686 u_int i;
1687
1688 for (i = 0; i < ictx->param_list_len; i++) {
1689 switch (input_get(ictx, i, 0, -1)) {
1690 case -1:
1691 break;
1692 case 1: /* DECCKM */
1693 screen_write_mode_clear(sctx, MODE_KCURSOR);
1694 break;
1695 case 3: /* DECCOLM */
1696 screen_write_cursormove(sctx, 0, 0, 1);
1697 screen_write_clearscreen(sctx, gc->bg);
1698 break;
1699 case 6: /* DECOM */
1700 screen_write_mode_clear(sctx, MODE_ORIGIN);
1701 screen_write_cursormove(sctx, 0, 0, 1);
1702 break;
1703 case 7: /* DECAWM */
1704 screen_write_mode_clear(sctx, MODE_WRAP);
1705 break;
1706 case 12:
1707 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1708 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1709 break;
1710 case 25: /* TCEM */
1711 screen_write_mode_clear(sctx, MODE_CURSOR);
1712 break;
1713 case 1000:
1714 case 1001:
1715 case 1002:
1716 case 1003:
1717 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1718 break;
1719 case 1004:
1720 screen_write_mode_clear(sctx, MODE_FOCUSON);
1721 break;
1722 case 1005:
1723 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1724 break;
1725 case 1006:
1726 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1727 break;
1728 case 47:
1729 case 1047:
1730 screen_write_alternateoff(sctx, gc, 0);
1731 break;
1732 case 1049:
1733 screen_write_alternateoff(sctx, gc, 1);
1734 break;
1735 case 2004:
1736 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1737 break;
1738 default:
1739 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1740 break;
1741 }
1742 }
1743 }
1744
1745 /* Handle CSI SM. */
1746 static void
1747 input_csi_dispatch_sm(struct input_ctx *ictx)
1748 {
1749 struct screen_write_ctx *sctx = &ictx->ctx;
1750 u_int i;
1751
1752 for (i = 0; i < ictx->param_list_len; i++) {
1753 switch (input_get(ictx, i, 0, -1)) {
1754 case -1:
1755 break;
1756 case 4: /* IRM */
1757 screen_write_mode_set(sctx, MODE_INSERT);
1758 break;
1759 case 34:
1760 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1761 break;
1762 default:
1763 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1764 break;
1765 }
1766 }
1767 }
1768
1769 /* Handle CSI private SM. */
1770 static void
1771 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1772 {
1773 struct screen_write_ctx *sctx = &ictx->ctx;
1774 struct grid_cell *gc = &ictx->cell.cell;
1775 u_int i;
1776
1777 for (i = 0; i < ictx->param_list_len; i++) {
1778 switch (input_get(ictx, i, 0, -1)) {
1779 case -1:
1780 break;
1781 case 1: /* DECCKM */
1782 screen_write_mode_set(sctx, MODE_KCURSOR);
1783 break;
1784 case 3: /* DECCOLM */
1785 screen_write_cursormove(sctx, 0, 0, 1);
1786 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1787 break;
1788 case 6: /* DECOM */
1789 screen_write_mode_set(sctx, MODE_ORIGIN);
1790 screen_write_cursormove(sctx, 0, 0, 1);
1791 break;
1792 case 7: /* DECAWM */
1793 screen_write_mode_set(sctx, MODE_WRAP);
1794 break;
1795 case 12:
1796 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1797 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1798 break;
1799 case 25: /* TCEM */
1800 screen_write_mode_set(sctx, MODE_CURSOR);
1801 break;
1802 case 1000:
1803 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1804 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1805 break;
1806 case 1002:
1807 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1808 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1809 break;
1810 case 1003:
1811 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1812 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1813 break;
1814 case 1004:
1815 screen_write_mode_set(sctx, MODE_FOCUSON);
1816 break;
1817 case 1005:
1818 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1819 break;
1820 case 1006:
1821 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1822 break;
1823 case 47:
1824 case 1047:
1825 screen_write_alternateon(sctx, gc, 0);
1826 break;
1827 case 1049:
1828 screen_write_alternateon(sctx, gc, 1);
1829 break;
1830 case 2004:
1831 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1832 break;
1833 default:
1834 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1835 break;
1836 }
1837 }
1838 }
1839
1840 /* Handle CSI graphics SM. */
1841 static void
1842 input_csi_dispatch_sm_graphics(struct input_ctx *ictx)
1843 {
1844 #ifdef ENABLE_SIXEL
1845 int n, m, o;
1846
1847 if (ictx->param_list_len > 3)
1848 return;
1849 n = input_get(ictx, 0, 0, 0);
1850 m = input_get(ictx, 1, 0, 0);
1851 o = input_get(ictx, 2, 0, 0);
1852
1853 if (n == 1 && (m == 1 || m == 2 || m == 4))
1854 input_reply(ictx, "\033[?%d;0;%uS", n, SIXEL_COLOUR_REGISTERS);
1855 else
1856 input_reply(ictx, "\033[?%d;3;%dS", n, o);
1857 #endif
1858 }
1859
1860 /* Handle CSI window operations. */
1861 static void
1862 input_csi_dispatch_winops(struct input_ctx *ictx)
1863 {
1864 struct screen_write_ctx *sctx = &ictx->ctx;
1865 struct screen *s = sctx->s;
1866 struct window_pane *wp = ictx->wp;
1867 struct window *w = wp->window;
1868 u_int x = screen_size_x(s), y = screen_size_y(s);
1869 int n, m;
1870
1871 m = 0;
1872 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1873 switch (n) {
1874 case 1:
1875 case 2:
1876 case 5:
1877 case 6:
1878 case 7:
1879 case 11:
1880 case 13:
1881 case 20:
1882 case 21:
1883 case 24:
1884 break;
1885 case 3:
1886 case 4:
1887 case 8:
1888 m++;
1889 if (input_get(ictx, m, 0, -1) == -1)
1890 return;
1891 /* FALLTHROUGH */
1892 case 9:
1893 case 10:
1894 m++;
1895 if (input_get(ictx, m, 0, -1) == -1)
1896 return;
1897 break;
1898 case 14:
1899 input_reply(ictx, "\033[4;%u;%ut", y * w->ypixel, x * w->xpixel);
1900 break;
1901 case 15:
1902 input_reply(ictx, "\033[5;%u;%ut", y * w->ypixel, x * w->xpixel);
1903 break;
1904 case 16:
1905 input_reply(ictx, "\033[6;%u;%ut", w->ypixel, w->xpixel);
1906 break;
1907 case 18:
1908 input_reply(ictx, "\033[8;%u;%ut", y, x);
1909 break;
1910 case 19:
1911 input_reply(ictx, "\033[9;%u;%ut", y, x);
1912 break;
1913 case 22:
1914 m++;
1915 switch (input_get(ictx, m, 0, -1)) {
1916 case -1:
1917 return;
1918 case 0:
1919 case 2:
1920 screen_push_title(sctx->s);
1921 break;
1922 }
1923 break;
1924 case 23:
1925 m++;
1926 switch (input_get(ictx, m, 0, -1)) {
1927 case -1:
1928 return;
1929 case 0:
1930 case 2:
1931 screen_pop_title(sctx->s);
1932 if (wp == NULL)
1933 break;
1934 notify_pane("pane-title-changed", wp);
1935 server_redraw_window_borders(wp->window);
1936 server_status_window(wp->window);
1937 break;
1938 }
1939 break;
1940 default:
1941 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1942 break;
1943 }
1944 m++;
1945 }
1946 }
1947
1948 /* Helper for 256 colour SGR. */
1949 static int
1950 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1951 {
1952 struct grid_cell *gc = &ictx->cell.cell;
1953
1954 if (c == -1 || c > 255) {
1955 if (fgbg == 38)
1956 gc->fg = 8;
1957 else if (fgbg == 48)
1958 gc->bg = 8;
1959 } else {
1960 if (fgbg == 38)
1961 gc->fg = c | COLOUR_FLAG_256;
1962 else if (fgbg == 48)
1963 gc->bg = c | COLOUR_FLAG_256;
1964 else if (fgbg == 58)
1965 gc->us = c | COLOUR_FLAG_256;
1966 }
1967 return (1);
1968 }
1969
1970 /* Handle CSI SGR for 256 colours. */
1971 static void
1972 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1973 {
1974 int c;
1975
1976 c = input_get(ictx, (*i) + 1, 0, -1);
1977 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1978 (*i)++;
1979 }
1980
1981 /* Helper for RGB colour SGR. */
1982 static int
1983 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1984 int b)
1985 {
1986 struct grid_cell *gc = &ictx->cell.cell;
1987
1988 if (r == -1 || r > 255)
1989 return (0);
1990 if (g == -1 || g > 255)
1991 return (0);
1992 if (b == -1 || b > 255)
1993 return (0);
1994
1995 if (fgbg == 38)
1996 gc->fg = colour_join_rgb(r, g, b);
1997 else if (fgbg == 48)
1998 gc->bg = colour_join_rgb(r, g, b);
1999 else if (fgbg == 58)
2000 gc->us = colour_join_rgb(r, g, b);
2001 return (1);
2002 }
2003
2004 /* Handle CSI SGR for RGB colours. */
2005 static void
2006 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
2007 {
2008 int r, g, b;
2009
2010 r = input_get(ictx, (*i) + 1, 0, -1);
2011 g = input_get(ictx, (*i) + 2, 0, -1);
2012 b = input_get(ictx, (*i) + 3, 0, -1);
2013 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
2014 (*i) += 3;
2015 }
2016
2017 /* Handle CSI SGR with a ISO parameter. */
2018 static void
2019 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
2020 {
2021 struct grid_cell *gc = &ictx->cell.cell;
2022 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
2023 int p[8];
2024 u_int n;
2025 const char *errstr;
2026
2027 for (n = 0; n < nitems(p); n++)
2028 p[n] = -1;
2029 n = 0;
2030
2031 ptr = copy = xstrdup(s);
2032 while ((out = strsep(&ptr, ":")) != NULL) {
2033 if (*out != '\0') {
2034 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
2035 if (errstr != NULL || n == nitems(p)) {
2036 free(copy);
2037 return;
2038 }
2039 } else {
2040 n++;
2041 if (n == nitems(p)) {
2042 free(copy);
2043 return;
2044 }
2045 }
2046 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2047 }
2048 free(copy);
2049
2050 if (n == 0)
2051 return;
2052 if (p[0] == 4) {
2053 if (n != 2)
2054 return;
2055 switch (p[1]) {
2056 case 0:
2057 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2058 break;
2059 case 1:
2060 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2061 gc->attr |= GRID_ATTR_UNDERSCORE;
2062 break;
2063 case 2:
2064 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2065 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2066 break;
2067 case 3:
2068 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2069 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2070 break;
2071 case 4:
2072 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2073 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2074 break;
2075 case 5:
2076 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2077 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2078 break;
2079 }
2080 return;
2081 }
2082 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2083 return;
2084 switch (p[1]) {
2085 case 2:
2086 if (n < 3)
2087 break;
2088 if (n == 5)
2089 i = 2;
2090 else
2091 i = 3;
2092 if (n < i + 3)
2093 break;
2094 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2095 p[i + 2]);
2096 break;
2097 case 5:
2098 if (n < 3)
2099 break;
2100 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2101 break;
2102 }
2103 }
2104
2105 /* Handle CSI SGR. */
2106 static void
2107 input_csi_dispatch_sgr(struct input_ctx *ictx)
2108 {
2109 struct grid_cell *gc = &ictx->cell.cell;
2110 u_int i, link;
2111 int n;
2112
2113 if (ictx->param_list_len == 0) {
2114 memcpy(gc, &grid_default_cell, sizeof *gc);
2115 return;
2116 }
2117
2118 for (i = 0; i < ictx->param_list_len; i++) {
2119 if (ictx->param_list[i].type == INPUT_STRING) {
2120 input_csi_dispatch_sgr_colon(ictx, i);
2121 continue;
2122 }
2123 n = input_get(ictx, i, 0, 0);
2124 if (n == -1)
2125 continue;
2126
2127 if (n == 38 || n == 48 || n == 58) {
2128 i++;
2129 switch (input_get(ictx, i, 0, -1)) {
2130 case 2:
2131 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2132 break;
2133 case 5:
2134 input_csi_dispatch_sgr_256(ictx, n, &i);
2135 break;
2136 }
2137 continue;
2138 }
2139
2140 switch (n) {
2141 case 0:
2142 link = gc->link;
2143 memcpy(gc, &grid_default_cell, sizeof *gc);
2144 gc->link = link;
2145 break;
2146 case 1:
2147 gc->attr |= GRID_ATTR_BRIGHT;
2148 break;
2149 case 2:
2150 gc->attr |= GRID_ATTR_DIM;
2151 break;
2152 case 3:
2153 gc->attr |= GRID_ATTR_ITALICS;
2154 break;
2155 case 4:
2156 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2157 gc->attr |= GRID_ATTR_UNDERSCORE;
2158 break;
2159 case 5:
2160 case 6:
2161 gc->attr |= GRID_ATTR_BLINK;
2162 break;
2163 case 7:
2164 gc->attr |= GRID_ATTR_REVERSE;
2165 break;
2166 case 8:
2167 gc->attr |= GRID_ATTR_HIDDEN;
2168 break;
2169 case 9:
2170 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2171 break;
2172 case 21:
2173 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2174 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2175 break;
2176 case 22:
2177 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2178 break;
2179 case 23:
2180 gc->attr &= ~GRID_ATTR_ITALICS;
2181 break;
2182 case 24:
2183 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2184 break;
2185 case 25:
2186 gc->attr &= ~GRID_ATTR_BLINK;
2187 break;
2188 case 27:
2189 gc->attr &= ~GRID_ATTR_REVERSE;
2190 break;
2191 case 28:
2192 gc->attr &= ~GRID_ATTR_HIDDEN;
2193 break;
2194 case 29:
2195 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2196 break;
2197 case 30:
2198 case 31:
2199 case 32:
2200 case 33:
2201 case 34:
2202 case 35:
2203 case 36:
2204 case 37:
2205 gc->fg = n - 30;
2206 break;
2207 case 39:
2208 gc->fg = 8;
2209 break;
2210 case 40:
2211 case 41:
2212 case 42:
2213 case 43:
2214 case 44:
2215 case 45:
2216 case 46:
2217 case 47:
2218 gc->bg = n - 40;
2219 break;
2220 case 49:
2221 gc->bg = 8;
2222 break;
2223 case 53:
2224 gc->attr |= GRID_ATTR_OVERLINE;
2225 break;
2226 case 55:
2227 gc->attr &= ~GRID_ATTR_OVERLINE;
2228 break;
2229 case 59:
2230 gc->us = 8;
2231 break;
2232 case 90:
2233 case 91:
2234 case 92:
2235 case 93:
2236 case 94:
2237 case 95:
2238 case 96:
2239 case 97:
2240 gc->fg = n;
2241 break;
2242 case 100:
2243 case 101:
2244 case 102:
2245 case 103:
2246 case 104:
2247 case 105:
2248 case 106:
2249 case 107:
2250 gc->bg = n - 10;
2251 break;
2252 }
2253 }
2254 }
2255
2256 /* End of input with BEL. */
2257 static int
2258 input_end_bel(struct input_ctx *ictx)
2259 {
2260 log_debug("%s", __func__);
2261
2262 ictx->input_end = INPUT_END_BEL;
2263
2264 return (0);
2265 }
2266
2267 /* DCS string started. */
2268 static void
2269 input_enter_dcs(struct input_ctx *ictx)
2270 {
2271 log_debug("%s", __func__);
2272
2273 input_clear(ictx);
2274 input_start_timer(ictx);
2275 ictx->last = -1;
2276 }
2277
2278 /* DCS terminator (ST) received. */
2279 static int
2280 input_dcs_dispatch(struct input_ctx *ictx)
2281 {
2282 struct window_pane *wp = ictx->wp;
2283 struct screen_write_ctx *sctx = &ictx->ctx;
2284 u_char *buf = ictx->input_buf;
2285 size_t len = ictx->input_len;
2286 const char prefix[] = "tmux;";
2287 const u_int prefixlen = (sizeof prefix) - 1;
2288 long long allow_passthrough = 0;
2289 #ifdef ENABLE_SIXEL
2290 struct window *w = wp->window;
2291 struct sixel_image *si;
2292 #endif
2293
2294 if (wp == NULL)
2295 return (0);
2296 if (ictx->flags & INPUT_DISCARD) {
2297 log_debug("%s: %zu bytes (discard)", __func__, len);
2298 return (0);
2299 }
2300 #ifdef ENABLE_SIXEL
2301 if (buf[0] == 'q') {
2302 si = sixel_parse(buf, len, w->xpixel, w->ypixel);
2303 if (si != NULL)
2304 screen_write_sixelimage(sctx, si, ictx->cell.cell.bg);
2305 }
2306 #endif
2307
2308 allow_passthrough = options_get_number(wp->options, "allow-passthrough");
2309 if (!allow_passthrough)
2310 return (0);
2311 log_debug("%s: \"%s\"", __func__, buf);
2312
2313 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2314 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2315 allow_passthrough == 2);
2316 }
2317
2318 return (0);
2319 }
2320
2321 /* OSC string started. */
2322 static void
2323 input_enter_osc(struct input_ctx *ictx)
2324 {
2325 log_debug("%s", __func__);
2326
2327 input_clear(ictx);
2328 input_start_timer(ictx);
2329 ictx->last = -1;
2330 }
2331
2332 /* OSC terminator (ST) received. */
2333 static void
2334 input_exit_osc(struct input_ctx *ictx)
2335 {
2336 struct screen_write_ctx *sctx = &ictx->ctx;
2337 struct window_pane *wp = ictx->wp;
2338 u_char *p = ictx->input_buf;
2339 u_int option;
2340
2341 if (ictx->flags & INPUT_DISCARD)
2342 return;
2343 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2344 return;
2345
2346 log_debug("%s: \"%s\" (end %s)", __func__, p,
2347 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2348
2349 option = 0;
2350 while (*p >= '0' && *p <= '9')
2351 option = option * 10 + *p++ - '0';
2352 if (*p != ';' && *p != '\0')
2353 return;
2354 if (*p == ';')
2355 p++;
2356
2357 switch (option) {
2358 case 0:
2359 case 2:
2360 if (screen_set_title(sctx->s, p) && wp != NULL) {
2361 notify_pane("pane-title-changed", wp);
2362 server_redraw_window_borders(wp->window);
2363 server_status_window(wp->window);
2364 }
2365 break;
2366 case 4:
2367 input_osc_4(ictx, p);
2368 break;
2369 case 7:
2370 if (utf8_isvalid(p)) {
2371 screen_set_path(sctx->s, p);
2372 if (wp != NULL) {
2373 server_redraw_window_borders(wp->window);
2374 server_status_window(wp->window);
2375 }
2376 }
2377 break;
2378 case 8:
2379 input_osc_8(ictx, p);
2380 break;
2381 case 10:
2382 input_osc_10(ictx, p);
2383 break;
2384 case 11:
2385 input_osc_11(ictx, p);
2386 break;
2387 case 12:
2388 input_osc_12(ictx, p);
2389 break;
2390 case 52:
2391 input_osc_52(ictx, p);
2392 break;
2393 case 104:
2394 input_osc_104(ictx, p);
2395 break;
2396 case 110:
2397 input_osc_110(ictx, p);
2398 break;
2399 case 111:
2400 input_osc_111(ictx, p);
2401 break;
2402 case 112:
2403 input_osc_112(ictx, p);
2404 break;
2405 case 133:
2406 input_osc_133(ictx, p);
2407 break;
2408 default:
2409 log_debug("%s: unknown '%u'", __func__, option);
2410 break;
2411 }
2412 }
2413
2414 /* APC string started. */
2415 static void
2416 input_enter_apc(struct input_ctx *ictx)
2417 {
2418 log_debug("%s", __func__);
2419
2420 input_clear(ictx);
2421 input_start_timer(ictx);
2422 ictx->last = -1;
2423 }
2424
2425 /* APC terminator (ST) received. */
2426 static void
2427 input_exit_apc(struct input_ctx *ictx)
2428 {
2429 struct screen_write_ctx *sctx = &ictx->ctx;
2430 struct window_pane *wp = ictx->wp;
2431
2432 if (ictx->flags & INPUT_DISCARD)
2433 return;
2434 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2435
2436 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2437 notify_pane("pane-title-changed", wp);
2438 server_redraw_window_borders(wp->window);
2439 server_status_window(wp->window);
2440 }
2441 }
2442
2443 /* Rename string started. */
2444 static void
2445 input_enter_rename(struct input_ctx *ictx)
2446 {
2447 log_debug("%s", __func__);
2448
2449 input_clear(ictx);
2450 input_start_timer(ictx);
2451 ictx->last = -1;
2452 }
2453
2454 /* Rename terminator (ST) received. */
2455 static void
2456 input_exit_rename(struct input_ctx *ictx)
2457 {
2458 struct window_pane *wp = ictx->wp;
2459 struct window *w;
2460 struct options_entry *o;
2461
2462 if (wp == NULL)
2463 return;
2464 if (ictx->flags & INPUT_DISCARD)
2465 return;
2466 if (!options_get_number(ictx->wp->options, "allow-rename"))
2467 return;
2468 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2469
2470 if (!utf8_isvalid(ictx->input_buf))
2471 return;
2472 w = wp->window;
2473
2474 if (ictx->input_len == 0) {
2475 o = options_get_only(w->options, "automatic-rename");
2476 if (o != NULL)
2477 options_remove_or_default(o, -1, NULL);
2478 if (!options_get_number(w->options, "automatic-rename"))
2479 window_set_name(w, "");
2480 } else {
2481 options_set_number(w->options, "automatic-rename", 0);
2482 window_set_name(w, ictx->input_buf);
2483 }
2484 server_redraw_window_borders(w);
2485 server_status_window(w);
2486 }
2487
2488 /* Open UTF-8 character. */
2489 static int
2490 input_top_bit_set(struct input_ctx *ictx)
2491 {
2492 struct screen_write_ctx *sctx = &ictx->ctx;
2493 struct utf8_data *ud = &ictx->utf8data;
2494
2495 ictx->last = -1;
2496
2497 if (!ictx->utf8started) {
2498 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2499 return (0);
2500 ictx->utf8started = 1;
2501 return (0);
2502 }
2503
2504 switch (utf8_append(ud, ictx->ch)) {
2505 case UTF8_MORE:
2506 return (0);
2507 case UTF8_ERROR:
2508 ictx->utf8started = 0;
2509 return (0);
2510 case UTF8_DONE:
2511 break;
2512 }
2513 ictx->utf8started = 0;
2514
2515 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2516 (int)ud->size, ud->data, ud->width);
2517
2518 utf8_copy(&ictx->cell.cell.data, ud);
2519 screen_write_collect_add(sctx, &ictx->cell.cell);
2520
2521 return (0);
2522 }
2523
2524 /* Reply to a colour request. */
2525 static void
2526 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2527 {
2528 u_char r, g, b;
2529 const char *end;
2530
2531 if (c != -1)
2532 c = colour_force_rgb(c);
2533 if (c == -1)
2534 return;
2535 colour_split_rgb(c, &r, &g, &b);
2536
2537 if (ictx->input_end == INPUT_END_BEL)
2538 end = "\007";
2539 else
2540 end = "\033\\";
2541 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2542 n, r, r, g, g, b, b, end);
2543 }
2544
2545 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2546 static void
2547 input_osc_4(struct input_ctx *ictx, const char *p)
2548 {
2549 char *copy, *s, *next = NULL;
2550 long idx;
2551 int c, bad = 0, redraw = 0;
2552
2553 copy = s = xstrdup(p);
2554 while (s != NULL && *s != '\0') {
2555 idx = strtol(s, &next, 10);
2556 if (*next++ != ';') {
2557 bad = 1;
2558 break;
2559 }
2560 if (idx < 0 || idx >= 256) {
2561 bad = 1;
2562 break;
2563 }
2564
2565 s = strsep(&next, ";");
2566 if (strcmp(s, "?") == 0) {
2567 c = colour_palette_get(ictx->palette, idx);
2568 if (c != -1)
2569 input_osc_colour_reply(ictx, 4, c);
2570 continue;
2571 }
2572 if ((c = colour_parseX11(s)) == -1) {
2573 s = next;
2574 continue;
2575 }
2576 if (colour_palette_set(ictx->palette, idx, c))
2577 redraw = 1;
2578 s = next;
2579 }
2580 if (bad)
2581 log_debug("bad OSC 4: %s", p);
2582 if (redraw)
2583 screen_write_fullredraw(&ictx->ctx);
2584 free(copy);
2585 }
2586
2587 /* Handle the OSC 8 sequence for embedding hyperlinks. */
2588 static void
2589 input_osc_8(struct input_ctx *ictx, const char *p)
2590 {
2591 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2592 struct grid_cell *gc = &ictx->cell.cell;
2593 const char *start, *end, *uri;
2594 char *id = NULL;
2595
2596 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
2597 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2598 if (id != NULL)
2599 goto bad;
2600 id = xstrndup(start + 3, end - start - 3);
2601 }
2602
2603 /* The first ; is the end of parameters and start of the URI. */
2604 if (*end == ';')
2605 break;
2606 }
2607 if (end == NULL || *end != ';')
2608 goto bad;
2609 uri = end + 1;
2610 if (*uri == '\0') {
2611 gc->link = 0;
2612 free(id);
2613 return;
2614 }
2615 gc->link = hyperlinks_put(hl, uri, id);
2616 if (id == NULL)
2617 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2618 else
2619 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2620 free(id);
2621 return;
2622
2623 bad:
2624 log_debug("bad OSC 8 %s", p);
2625 free(id);
2626 }
2627
2628 /*
2629 * Get a client with a foreground for the pane. There isn't much to choose
2630 * between them so just use the first.
2631 */
2632 static int
2633 input_get_fg_client(struct window_pane *wp)
2634 {
2635 struct window *w = wp->window;
2636 struct client *loop;
2637
2638 TAILQ_FOREACH(loop, &clients, entry) {
2639 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2640 continue;
2641 if (loop->session == NULL || !session_has(loop->session, w))
2642 continue;
2643 if (loop->tty.fg == -1)
2644 continue;
2645 return (loop->tty.fg);
2646 }
2647 return (-1);
2648 }
2649
2650 /* Get a client with a background for the pane. */
2651 static int
2652 input_get_bg_client(struct window_pane *wp)
2653 {
2654 struct window *w = wp->window;
2655 struct client *loop;
2656
2657 TAILQ_FOREACH(loop, &clients, entry) {
2658 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2659 continue;
2660 if (loop->session == NULL || !session_has(loop->session, w))
2661 continue;
2662 if (loop->tty.bg == -1)
2663 continue;
2664 return (loop->tty.bg);
2665 }
2666 return (-1);
2667 }
2668
2669 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2670 static void
2671 input_osc_10(struct input_ctx *ictx, const char *p)
2672 {
2673 struct window_pane *wp = ictx->wp;
2674 struct grid_cell defaults;
2675 int c;
2676
2677 if (strcmp(p, "?") == 0) {
2678 if (wp == NULL)
2679 return;
2680 tty_default_colours(&defaults, wp);
2681 if (COLOUR_DEFAULT(defaults.fg))
2682 c = input_get_fg_client(wp);
2683 else
2684 c = defaults.fg;
2685 input_osc_colour_reply(ictx, 10, c);
2686 return;
2687 }
2688
2689 if ((c = colour_parseX11(p)) == -1) {
2690 log_debug("bad OSC 10: %s", p);
2691 return;
2692 }
2693 if (ictx->palette != NULL) {
2694 ictx->palette->fg = c;
2695 if (wp != NULL)
2696 wp->flags |= PANE_STYLECHANGED;
2697 screen_write_fullredraw(&ictx->ctx);
2698 }
2699 }
2700
2701 /* Handle the OSC 110 sequence for resetting foreground colour. */
2702 static void
2703 input_osc_110(struct input_ctx *ictx, const char *p)
2704 {
2705 struct window_pane *wp = ictx->wp;
2706
2707 if (*p != '\0')
2708 return;
2709 if (ictx->palette != NULL) {
2710 ictx->palette->fg = 8;
2711 if (wp != NULL)
2712 wp->flags |= PANE_STYLECHANGED;
2713 screen_write_fullredraw(&ictx->ctx);
2714 }
2715 }
2716
2717 /* Handle the OSC 11 sequence for setting and querying background colour. */
2718 static void
2719 input_osc_11(struct input_ctx *ictx, const char *p)
2720 {
2721 struct window_pane *wp = ictx->wp;
2722 struct grid_cell defaults;
2723 int c;
2724
2725 if (strcmp(p, "?") == 0) {
2726 if (wp == NULL)
2727 return;
2728 tty_default_colours(&defaults, wp);
2729 if (COLOUR_DEFAULT(defaults.bg))
2730 c = input_get_bg_client(wp);
2731 else
2732 c = defaults.bg;
2733 input_osc_colour_reply(ictx, 11, c);
2734 return;
2735 }
2736
2737 if ((c = colour_parseX11(p)) == -1) {
2738 log_debug("bad OSC 11: %s", p);
2739 return;
2740 }
2741 if (ictx->palette != NULL) {
2742 ictx->palette->bg = c;
2743 if (wp != NULL)
2744 wp->flags |= PANE_STYLECHANGED;
2745 screen_write_fullredraw(&ictx->ctx);
2746 }
2747 }
2748
2749 /* Handle the OSC 111 sequence for resetting background colour. */
2750 static void
2751 input_osc_111(struct input_ctx *ictx, const char *p)
2752 {
2753 struct window_pane *wp = ictx->wp;
2754
2755 if (*p != '\0')
2756 return;
2757 if (ictx->palette != NULL) {
2758 ictx->palette->bg = 8;
2759 if (wp != NULL)
2760 wp->flags |= PANE_STYLECHANGED;
2761 screen_write_fullredraw(&ictx->ctx);
2762 }
2763 }
2764
2765 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2766 static void
2767 input_osc_12(struct input_ctx *ictx, const char *p)
2768 {
2769 struct window_pane *wp = ictx->wp;
2770 int c;
2771
2772 if (strcmp(p, "?") == 0) {
2773 if (wp != NULL) {
2774 c = ictx->ctx.s->ccolour;
2775 if (c == -1)
2776 c = ictx->ctx.s->default_ccolour;
2777 input_osc_colour_reply(ictx, 12, c);
2778 }
2779 return;
2780 }
2781
2782 if ((c = colour_parseX11(p)) == -1) {
2783 log_debug("bad OSC 12: %s", p);
2784 return;
2785 }
2786 screen_set_cursor_colour(ictx->ctx.s, c);
2787 }
2788
2789 /* Handle the OSC 112 sequence for resetting cursor colour. */
2790 static void
2791 input_osc_112(struct input_ctx *ictx, const char *p)
2792 {
2793 if (*p == '\0') /* no arguments allowed */
2794 screen_set_cursor_colour(ictx->ctx.s, -1);
2795 }
2796
2797 /* Handle the OSC 133 sequence. */
2798 static void
2799 input_osc_133(struct input_ctx *ictx, const char *p)
2800 {
2801 struct grid *gd = ictx->ctx.s->grid;
2802 u_int line = ictx->ctx.s->cy + gd->hsize;
2803 struct grid_line *gl;
2804
2805 if (line > gd->hsize + gd->sy - 1)
2806 return;
2807 gl = grid_get_line(gd, line);
2808
2809 switch (*p) {
2810 case 'A':
2811 gl->flags |= GRID_LINE_START_PROMPT;
2812 break;
2813 case 'C':
2814 gl->flags |= GRID_LINE_START_OUTPUT;
2815 break;
2816 }
2817 }
2818
2819 /* Handle the OSC 52 sequence for setting the clipboard. */
2820 static void
2821 input_osc_52(struct input_ctx *ictx, const char *p)
2822 {
2823 struct window_pane *wp = ictx->wp;
2824 char *end;
2825 const char *buf = NULL;
2826 size_t len = 0;
2827 u_char *out;
2828 int outlen, state;
2829 struct screen_write_ctx ctx;
2830 struct paste_buffer *pb;
2831 const char* allow = "cpqs01234567";
2832 char flags[sizeof "cpqs01234567"] = "";
2833 u_int i, j = 0;
2834
2835 if (wp == NULL)
2836 return;
2837 state = options_get_number(global_options, "set-clipboard");
2838 if (state != 2)
2839 return;
2840
2841 if ((end = strchr(p, ';')) == NULL)
2842 return;
2843 end++;
2844 if (*end == '\0')
2845 return;
2846 log_debug("%s: %s", __func__, end);
2847
2848 for (i = 0; p + i != end; i++) {
2849 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2850 flags[j++] = p[i];
2851 }
2852 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2853
2854 if (strcmp(end, "?") == 0) {
2855 if ((pb = paste_get_top(NULL)) != NULL)
2856 buf = paste_buffer_data(pb, &len);
2857 if (ictx->input_end == INPUT_END_BEL)
2858 input_reply_clipboard(ictx->event, buf, len, "\007");
2859 else
2860 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2861 return;
2862 }
2863
2864 len = (strlen(end) / 4) * 3;
2865 if (len == 0)
2866 return;
2867
2868 out = xmalloc(len);
2869 if ((outlen = b64_pton(end, out, len)) == -1) {
2870 free(out);
2871 return;
2872 }
2873
2874 screen_write_start_pane(&ctx, wp, NULL);
2875 screen_write_setselection(&ctx, flags, out, outlen);
2876 screen_write_stop(&ctx);
2877 notify_pane("pane-set-clipboard", wp);
2878
2879 paste_add(NULL, out, outlen);
2880 }
2881
2882 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2883 static void
2884 input_osc_104(struct input_ctx *ictx, const char *p)
2885 {
2886 char *copy, *s;
2887 long idx;
2888 int bad = 0, redraw = 0;
2889
2890 if (*p == '\0') {
2891 colour_palette_clear(ictx->palette);
2892 screen_write_fullredraw(&ictx->ctx);
2893 return;
2894 }
2895
2896 copy = s = xstrdup(p);
2897 while (*s != '\0') {
2898 idx = strtol(s, &s, 10);
2899 if (*s != '\0' && *s != ';') {
2900 bad = 1;
2901 break;
2902 }
2903 if (idx < 0 || idx >= 256) {
2904 bad = 1;
2905 break;
2906 }
2907 if (colour_palette_set(ictx->palette, idx, -1))
2908 redraw = 1;
2909 if (*s == ';')
2910 s++;
2911 }
2912 if (bad)
2913 log_debug("bad OSC 104: %s", p);
2914 if (redraw)
2915 screen_write_fullredraw(&ictx->ctx);
2916 free(copy);
2917 }
2918
2919 void
2920 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2921 const char *end)
2922 {
2923 char *out = NULL;
2924 int outlen = 0;
2925
2926 if (buf != NULL && len != 0) {
2927 if (len >= ((size_t)INT_MAX * 3 / 4) - 1)
2928 return;
2929 outlen = 4 * ((len + 2) / 3) + 1;
2930 out = xmalloc(outlen);
2931 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2932 free(out);
2933 return;
2934 }
2935 }
2936
2937 bufferevent_write(bev, "\033]52;;", 6);
2938 if (outlen != 0)
2939 bufferevent_write(bev, out, outlen);
2940 bufferevent_write(bev, end, strlen(end));
2941 free(out);
2942 }
tmux -- terminal multiplexer similar to GNU Screen