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Use DECSLRM and DECFRA on terminals pretending to be VT520 or VT525 as
[tmux.git] / input.c
blob090d61ab06db9cb546517679db37c236263b779d
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_winops(struct input_ctx *);
173 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
174 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
175 static void input_csi_dispatch_sgr(struct input_ctx *);
176 static int input_dcs_dispatch(struct input_ctx *);
177 static int input_top_bit_set(struct input_ctx *);
178 static int input_end_bel(struct input_ctx *);
179
180 /* Command table comparison function. */
181 static int input_table_compare(const void *, const void *);
182
183 /* Command table entry. */
184 struct input_table_entry {
185 int ch;
186 const char *interm;
187 int type;
188 };
189
190 /* Escape commands. */
191 enum input_esc_type {
192 INPUT_ESC_DECALN,
193 INPUT_ESC_DECKPAM,
194 INPUT_ESC_DECKPNM,
195 INPUT_ESC_DECRC,
196 INPUT_ESC_DECSC,
197 INPUT_ESC_HTS,
198 INPUT_ESC_IND,
199 INPUT_ESC_NEL,
200 INPUT_ESC_RI,
201 INPUT_ESC_RIS,
202 INPUT_ESC_SCSG0_OFF,
203 INPUT_ESC_SCSG0_ON,
204 INPUT_ESC_SCSG1_OFF,
205 INPUT_ESC_SCSG1_ON,
206 INPUT_ESC_ST,
207 };
208
209 /* Escape command table. */
210 static const struct input_table_entry input_esc_table[] = {
211 { '0', "(", INPUT_ESC_SCSG0_ON },
212 { '0', ")", INPUT_ESC_SCSG1_ON },
213 { '7', "", INPUT_ESC_DECSC },
214 { '8', "", INPUT_ESC_DECRC },
215 { '8', "#", INPUT_ESC_DECALN },
216 { '=', "", INPUT_ESC_DECKPAM },
217 { '>', "", INPUT_ESC_DECKPNM },
218 { 'B', "(", INPUT_ESC_SCSG0_OFF },
219 { 'B', ")", INPUT_ESC_SCSG1_OFF },
220 { 'D', "", INPUT_ESC_IND },
221 { 'E', "", INPUT_ESC_NEL },
222 { 'H', "", INPUT_ESC_HTS },
223 { 'M', "", INPUT_ESC_RI },
224 { '\\', "", INPUT_ESC_ST },
225 { 'c', "", INPUT_ESC_RIS },
226 };
227
228 /* Control (CSI) commands. */
229 enum input_csi_type {
230 INPUT_CSI_CBT,
231 INPUT_CSI_CNL,
232 INPUT_CSI_CPL,
233 INPUT_CSI_CUB,
234 INPUT_CSI_CUD,
235 INPUT_CSI_CUF,
236 INPUT_CSI_CUP,
237 INPUT_CSI_CUU,
238 INPUT_CSI_DA,
239 INPUT_CSI_DA_TWO,
240 INPUT_CSI_DCH,
241 INPUT_CSI_DECSCUSR,
242 INPUT_CSI_DECSTBM,
243 INPUT_CSI_DL,
244 INPUT_CSI_DSR,
245 INPUT_CSI_ECH,
246 INPUT_CSI_ED,
247 INPUT_CSI_EL,
248 INPUT_CSI_HPA,
249 INPUT_CSI_ICH,
250 INPUT_CSI_IL,
251 INPUT_CSI_MODOFF,
252 INPUT_CSI_MODSET,
253 INPUT_CSI_RCP,
254 INPUT_CSI_REP,
255 INPUT_CSI_RM,
256 INPUT_CSI_RM_PRIVATE,
257 INPUT_CSI_SCP,
258 INPUT_CSI_SD,
259 INPUT_CSI_SGR,
260 INPUT_CSI_SM,
261 INPUT_CSI_SM_PRIVATE,
262 INPUT_CSI_SU,
263 INPUT_CSI_TBC,
264 INPUT_CSI_VPA,
265 INPUT_CSI_WINOPS,
266 INPUT_CSI_XDA,
267 };
268
269 /* Control (CSI) command table. */
270 static const struct input_table_entry input_csi_table[] = {
271 { '@', "", INPUT_CSI_ICH },
272 { 'A', "", INPUT_CSI_CUU },
273 { 'B', "", INPUT_CSI_CUD },
274 { 'C', "", INPUT_CSI_CUF },
275 { 'D', "", INPUT_CSI_CUB },
276 { 'E', "", INPUT_CSI_CNL },
277 { 'F', "", INPUT_CSI_CPL },
278 { 'G', "", INPUT_CSI_HPA },
279 { 'H', "", INPUT_CSI_CUP },
280 { 'J', "", INPUT_CSI_ED },
281 { 'K', "", INPUT_CSI_EL },
282 { 'L', "", INPUT_CSI_IL },
283 { 'M', "", INPUT_CSI_DL },
284 { 'P', "", INPUT_CSI_DCH },
285 { 'S', "", INPUT_CSI_SU },
286 { 'T', "", INPUT_CSI_SD },
287 { 'X', "", INPUT_CSI_ECH },
288 { 'Z', "", INPUT_CSI_CBT },
289 { '`', "", INPUT_CSI_HPA },
290 { 'b', "", INPUT_CSI_REP },
291 { 'c', "", INPUT_CSI_DA },
292 { 'c', ">", INPUT_CSI_DA_TWO },
293 { 'd', "", INPUT_CSI_VPA },
294 { 'f', "", INPUT_CSI_CUP },
295 { 'g', "", INPUT_CSI_TBC },
296 { 'h', "", INPUT_CSI_SM },
297 { 'h', "?", INPUT_CSI_SM_PRIVATE },
298 { 'l', "", INPUT_CSI_RM },
299 { 'l', "?", INPUT_CSI_RM_PRIVATE },
300 { 'm', "", INPUT_CSI_SGR },
301 { 'm', ">", INPUT_CSI_MODSET },
302 { 'n', "", INPUT_CSI_DSR },
303 { 'n', ">", INPUT_CSI_MODOFF },
304 { 'q', " ", INPUT_CSI_DECSCUSR },
305 { 'q', ">", INPUT_CSI_XDA },
306 { 'r', "", INPUT_CSI_DECSTBM },
307 { 's', "", INPUT_CSI_SCP },
308 { 't', "", INPUT_CSI_WINOPS },
309 { 'u', "", INPUT_CSI_RCP },
310 };
311
312 /* Input transition. */
313 struct input_transition {
314 int first;
315 int last;
316
317 int (*handler)(struct input_ctx *);
318 const struct input_state *state;
319 };
320
321 /* Input state. */
322 struct input_state {
323 const char *name;
324 void (*enter)(struct input_ctx *);
325 void (*exit)(struct input_ctx *);
326 const struct input_transition *transitions;
327 };
328
329 /* State transitions available from all states. */
330 #define INPUT_STATE_ANYWHERE \
331 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
332 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
333 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
334
335 /* Forward declarations of state tables. */
336 static const struct input_transition input_state_ground_table[];
337 static const struct input_transition input_state_esc_enter_table[];
338 static const struct input_transition input_state_esc_intermediate_table[];
339 static const struct input_transition input_state_csi_enter_table[];
340 static const struct input_transition input_state_csi_parameter_table[];
341 static const struct input_transition input_state_csi_intermediate_table[];
342 static const struct input_transition input_state_csi_ignore_table[];
343 static const struct input_transition input_state_dcs_enter_table[];
344 static const struct input_transition input_state_dcs_parameter_table[];
345 static const struct input_transition input_state_dcs_intermediate_table[];
346 static const struct input_transition input_state_dcs_handler_table[];
347 static const struct input_transition input_state_dcs_escape_table[];
348 static const struct input_transition input_state_dcs_ignore_table[];
349 static const struct input_transition input_state_osc_string_table[];
350 static const struct input_transition input_state_apc_string_table[];
351 static const struct input_transition input_state_rename_string_table[];
352 static const struct input_transition input_state_consume_st_table[];
353
354 /* ground state definition. */
355 static const struct input_state input_state_ground = {
356 "ground",
357 input_ground, NULL,
358 input_state_ground_table
359 };
360
361 /* esc_enter state definition. */
362 static const struct input_state input_state_esc_enter = {
363 "esc_enter",
364 input_clear, NULL,
365 input_state_esc_enter_table
366 };
367
368 /* esc_intermediate state definition. */
369 static const struct input_state input_state_esc_intermediate = {
370 "esc_intermediate",
371 NULL, NULL,
372 input_state_esc_intermediate_table
373 };
374
375 /* csi_enter state definition. */
376 static const struct input_state input_state_csi_enter = {
377 "csi_enter",
378 input_clear, NULL,
379 input_state_csi_enter_table
380 };
381
382 /* csi_parameter state definition. */
383 static const struct input_state input_state_csi_parameter = {
384 "csi_parameter",
385 NULL, NULL,
386 input_state_csi_parameter_table
387 };
388
389 /* csi_intermediate state definition. */
390 static const struct input_state input_state_csi_intermediate = {
391 "csi_intermediate",
392 NULL, NULL,
393 input_state_csi_intermediate_table
394 };
395
396 /* csi_ignore state definition. */
397 static const struct input_state input_state_csi_ignore = {
398 "csi_ignore",
399 NULL, NULL,
400 input_state_csi_ignore_table
401 };
402
403 /* dcs_enter state definition. */
404 static const struct input_state input_state_dcs_enter = {
405 "dcs_enter",
406 input_enter_dcs, NULL,
407 input_state_dcs_enter_table
408 };
409
410 /* dcs_parameter state definition. */
411 static const struct input_state input_state_dcs_parameter = {
412 "dcs_parameter",
413 NULL, NULL,
414 input_state_dcs_parameter_table
415 };
416
417 /* dcs_intermediate state definition. */
418 static const struct input_state input_state_dcs_intermediate = {
419 "dcs_intermediate",
420 NULL, NULL,
421 input_state_dcs_intermediate_table
422 };
423
424 /* dcs_handler state definition. */
425 static const struct input_state input_state_dcs_handler = {
426 "dcs_handler",
427 NULL, NULL,
428 input_state_dcs_handler_table
429 };
430
431 /* dcs_escape state definition. */
432 static const struct input_state input_state_dcs_escape = {
433 "dcs_escape",
434 NULL, NULL,
435 input_state_dcs_escape_table
436 };
437
438 /* dcs_ignore state definition. */
439 static const struct input_state input_state_dcs_ignore = {
440 "dcs_ignore",
441 NULL, NULL,
442 input_state_dcs_ignore_table
443 };
444
445 /* osc_string state definition. */
446 static const struct input_state input_state_osc_string = {
447 "osc_string",
448 input_enter_osc, input_exit_osc,
449 input_state_osc_string_table
450 };
451
452 /* apc_string state definition. */
453 static const struct input_state input_state_apc_string = {
454 "apc_string",
455 input_enter_apc, input_exit_apc,
456 input_state_apc_string_table
457 };
458
459 /* rename_string state definition. */
460 static const struct input_state input_state_rename_string = {
461 "rename_string",
462 input_enter_rename, input_exit_rename,
463 input_state_rename_string_table
464 };
465
466 /* consume_st state definition. */
467 static const struct input_state input_state_consume_st = {
468 "consume_st",
469 input_enter_rename, NULL, /* rename also waits for ST */
470 input_state_consume_st_table
471 };
472
473 /* ground state table. */
474 static const struct input_transition input_state_ground_table[] = {
475 INPUT_STATE_ANYWHERE,
476
477 { 0x00, 0x17, input_c0_dispatch, NULL },
478 { 0x19, 0x19, input_c0_dispatch, NULL },
479 { 0x1c, 0x1f, input_c0_dispatch, NULL },
480 { 0x20, 0x7e, input_print, NULL },
481 { 0x7f, 0x7f, NULL, NULL },
482 { 0x80, 0xff, input_top_bit_set, NULL },
483
484 { -1, -1, NULL, NULL }
485 };
486
487 /* esc_enter state table. */
488 static const struct input_transition input_state_esc_enter_table[] = {
489 INPUT_STATE_ANYWHERE,
490
491 { 0x00, 0x17, input_c0_dispatch, NULL },
492 { 0x19, 0x19, input_c0_dispatch, NULL },
493 { 0x1c, 0x1f, input_c0_dispatch, NULL },
494 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
495 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
496 { 0x50, 0x50, NULL, &input_state_dcs_enter },
497 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
498 { 0x58, 0x58, NULL, &input_state_consume_st },
499 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
500 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
501 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
502 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
503 { 0x5d, 0x5d, NULL, &input_state_osc_string },
504 { 0x5e, 0x5e, NULL, &input_state_consume_st },
505 { 0x5f, 0x5f, NULL, &input_state_apc_string },
506 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
507 { 0x6b, 0x6b, NULL, &input_state_rename_string },
508 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
509 { 0x7f, 0xff, NULL, NULL },
510
511 { -1, -1, NULL, NULL }
512 };
513
514 /* esc_intermediate state table. */
515 static const struct input_transition input_state_esc_intermediate_table[] = {
516 INPUT_STATE_ANYWHERE,
517
518 { 0x00, 0x17, input_c0_dispatch, NULL },
519 { 0x19, 0x19, input_c0_dispatch, NULL },
520 { 0x1c, 0x1f, input_c0_dispatch, NULL },
521 { 0x20, 0x2f, input_intermediate, NULL },
522 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
523 { 0x7f, 0xff, NULL, NULL },
524
525 { -1, -1, NULL, NULL }
526 };
527
528 /* csi_enter state table. */
529 static const struct input_transition input_state_csi_enter_table[] = {
530 INPUT_STATE_ANYWHERE,
531
532 { 0x00, 0x17, input_c0_dispatch, NULL },
533 { 0x19, 0x19, input_c0_dispatch, NULL },
534 { 0x1c, 0x1f, input_c0_dispatch, NULL },
535 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
536 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
537 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
538 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
539 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
540 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
541 { 0x7f, 0xff, NULL, NULL },
542
543 { -1, -1, NULL, NULL }
544 };
545
546 /* csi_parameter state table. */
547 static const struct input_transition input_state_csi_parameter_table[] = {
548 INPUT_STATE_ANYWHERE,
549
550 { 0x00, 0x17, input_c0_dispatch, NULL },
551 { 0x19, 0x19, input_c0_dispatch, NULL },
552 { 0x1c, 0x1f, input_c0_dispatch, NULL },
553 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
554 { 0x30, 0x39, input_parameter, NULL },
555 { 0x3a, 0x3a, input_parameter, NULL },
556 { 0x3b, 0x3b, input_parameter, NULL },
557 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
558 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
559 { 0x7f, 0xff, NULL, NULL },
560
561 { -1, -1, NULL, NULL }
562 };
563
564 /* csi_intermediate state table. */
565 static const struct input_transition input_state_csi_intermediate_table[] = {
566 INPUT_STATE_ANYWHERE,
567
568 { 0x00, 0x17, input_c0_dispatch, NULL },
569 { 0x19, 0x19, input_c0_dispatch, NULL },
570 { 0x1c, 0x1f, input_c0_dispatch, NULL },
571 { 0x20, 0x2f, input_intermediate, NULL },
572 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
573 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
574 { 0x7f, 0xff, NULL, NULL },
575
576 { -1, -1, NULL, NULL }
577 };
578
579 /* csi_ignore state table. */
580 static const struct input_transition input_state_csi_ignore_table[] = {
581 INPUT_STATE_ANYWHERE,
582
583 { 0x00, 0x17, input_c0_dispatch, NULL },
584 { 0x19, 0x19, input_c0_dispatch, NULL },
585 { 0x1c, 0x1f, input_c0_dispatch, NULL },
586 { 0x20, 0x3f, NULL, NULL },
587 { 0x40, 0x7e, NULL, &input_state_ground },
588 { 0x7f, 0xff, NULL, NULL },
589
590 { -1, -1, NULL, NULL }
591 };
592
593 /* dcs_enter state table. */
594 static const struct input_transition input_state_dcs_enter_table[] = {
595 INPUT_STATE_ANYWHERE,
596
597 { 0x00, 0x17, NULL, NULL },
598 { 0x19, 0x19, NULL, NULL },
599 { 0x1c, 0x1f, NULL, NULL },
600 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
601 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
602 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
603 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
604 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
605 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
606 { 0x7f, 0xff, NULL, NULL },
607
608 { -1, -1, NULL, NULL }
609 };
610
611 /* dcs_parameter state table. */
612 static const struct input_transition input_state_dcs_parameter_table[] = {
613 INPUT_STATE_ANYWHERE,
614
615 { 0x00, 0x17, NULL, NULL },
616 { 0x19, 0x19, NULL, NULL },
617 { 0x1c, 0x1f, NULL, NULL },
618 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
619 { 0x30, 0x39, input_parameter, NULL },
620 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
621 { 0x3b, 0x3b, input_parameter, NULL },
622 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
623 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
624 { 0x7f, 0xff, NULL, NULL },
625
626 { -1, -1, NULL, NULL }
627 };
628
629 /* dcs_intermediate state table. */
630 static const struct input_transition input_state_dcs_intermediate_table[] = {
631 INPUT_STATE_ANYWHERE,
632
633 { 0x00, 0x17, NULL, NULL },
634 { 0x19, 0x19, NULL, NULL },
635 { 0x1c, 0x1f, NULL, NULL },
636 { 0x20, 0x2f, input_intermediate, NULL },
637 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
638 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
639 { 0x7f, 0xff, NULL, NULL },
640
641 { -1, -1, NULL, NULL }
642 };
643
644 /* dcs_handler state table. */
645 static const struct input_transition input_state_dcs_handler_table[] = {
646 /* No INPUT_STATE_ANYWHERE */
647
648 { 0x00, 0x1a, input_input, NULL },
649 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
650 { 0x1c, 0xff, input_input, NULL },
651
652 { -1, -1, NULL, NULL }
653 };
654
655 /* dcs_escape state table. */
656 static const struct input_transition input_state_dcs_escape_table[] = {
657 /* No INPUT_STATE_ANYWHERE */
658
659 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
660 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
661 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
662
663 { -1, -1, NULL, NULL }
664 };
665
666 /* dcs_ignore state table. */
667 static const struct input_transition input_state_dcs_ignore_table[] = {
668 INPUT_STATE_ANYWHERE,
669
670 { 0x00, 0x17, NULL, NULL },
671 { 0x19, 0x19, NULL, NULL },
672 { 0x1c, 0x1f, NULL, NULL },
673 { 0x20, 0xff, NULL, NULL },
674
675 { -1, -1, NULL, NULL }
676 };
677
678 /* osc_string state table. */
679 static const struct input_transition input_state_osc_string_table[] = {
680 INPUT_STATE_ANYWHERE,
681
682 { 0x00, 0x06, NULL, NULL },
683 { 0x07, 0x07, input_end_bel, &input_state_ground },
684 { 0x08, 0x17, NULL, NULL },
685 { 0x19, 0x19, NULL, NULL },
686 { 0x1c, 0x1f, NULL, NULL },
687 { 0x20, 0xff, input_input, NULL },
688
689 { -1, -1, NULL, NULL }
690 };
691
692 /* apc_string state table. */
693 static const struct input_transition input_state_apc_string_table[] = {
694 INPUT_STATE_ANYWHERE,
695
696 { 0x00, 0x17, NULL, NULL },
697 { 0x19, 0x19, NULL, NULL },
698 { 0x1c, 0x1f, NULL, NULL },
699 { 0x20, 0xff, input_input, NULL },
700
701 { -1, -1, NULL, NULL }
702 };
703
704 /* rename_string state table. */
705 static const struct input_transition input_state_rename_string_table[] = {
706 INPUT_STATE_ANYWHERE,
707
708 { 0x00, 0x17, NULL, NULL },
709 { 0x19, 0x19, NULL, NULL },
710 { 0x1c, 0x1f, NULL, NULL },
711 { 0x20, 0xff, input_input, NULL },
712
713 { -1, -1, NULL, NULL }
714 };
715
716 /* consume_st state table. */
717 static const struct input_transition input_state_consume_st_table[] = {
718 INPUT_STATE_ANYWHERE,
719
720 { 0x00, 0x17, NULL, NULL },
721 { 0x19, 0x19, NULL, NULL },
722 { 0x1c, 0x1f, NULL, NULL },
723 { 0x20, 0xff, NULL, NULL },
724
725 { -1, -1, NULL, NULL }
726 };
727
728 /* Input table compare. */
729 static int
730 input_table_compare(const void *key, const void *value)
731 {
732 const struct input_ctx *ictx = key;
733 const struct input_table_entry *entry = value;
734
735 if (ictx->ch != entry->ch)
736 return (ictx->ch - entry->ch);
737 return (strcmp(ictx->interm_buf, entry->interm));
738 }
739
740 /*
741 * Timer - if this expires then have been waiting for a terminator for too
742 * long, so reset to ground.
743 */
744 static void
745 input_timer_callback(__unused int fd, __unused short events, void *arg)
746 {
747 struct input_ctx *ictx = arg;
748
749 log_debug("%s: %s expired" , __func__, ictx->state->name);
750 input_reset(ictx, 0);
751 }
752
753 /* Start the timer. */
754 static void
755 input_start_timer(struct input_ctx *ictx)
756 {
757 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
758
759 event_del(&ictx->timer);
760 event_add(&ictx->timer, &tv);
761 }
762
763 /* Reset cell state to default. */
764 static void
765 input_reset_cell(struct input_ctx *ictx)
766 {
767 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
768 ictx->cell.set = 0;
769 ictx->cell.g0set = ictx->cell.g1set = 0;
770
771 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
772 ictx->old_cx = 0;
773 ictx->old_cy = 0;
774 }
775
776 /* Save screen state. */
777 static void
778 input_save_state(struct input_ctx *ictx)
779 {
780 struct screen_write_ctx *sctx = &ictx->ctx;
781 struct screen *s = sctx->s;
782
783 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
784 ictx->old_cx = s->cx;
785 ictx->old_cy = s->cy;
786 ictx->old_mode = s->mode;
787 }
788
789 /* Restore screen state. */
790 static void
791 input_restore_state(struct input_ctx *ictx)
792 {
793 struct screen_write_ctx *sctx = &ictx->ctx;
794
795 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
796 if (ictx->old_mode & MODE_ORIGIN)
797 screen_write_mode_set(sctx, MODE_ORIGIN);
798 else
799 screen_write_mode_clear(sctx, MODE_ORIGIN);
800 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
801 }
802
803 /* Initialise input parser. */
804 struct input_ctx *
805 input_init(struct window_pane *wp, struct bufferevent *bev,
806 struct colour_palette *palette)
807 {
808 struct input_ctx *ictx;
809
810 ictx = xcalloc(1, sizeof *ictx);
811 ictx->wp = wp;
812 ictx->event = bev;
813 ictx->palette = palette;
814
815 ictx->input_space = INPUT_BUF_START;
816 ictx->input_buf = xmalloc(INPUT_BUF_START);
817
818 ictx->since_ground = evbuffer_new();
819 if (ictx->since_ground == NULL)
820 fatalx("out of memory");
821
822 evtimer_set(&ictx->timer, input_timer_callback, ictx);
823
824 input_reset(ictx, 0);
825 return (ictx);
826 }
827
828 /* Destroy input parser. */
829 void
830 input_free(struct input_ctx *ictx)
831 {
832 u_int i;
833
834 for (i = 0; i < ictx->param_list_len; i++) {
835 if (ictx->param_list[i].type == INPUT_STRING)
836 free(ictx->param_list[i].str);
837 }
838
839 event_del(&ictx->timer);
840
841 free(ictx->input_buf);
842 evbuffer_free(ictx->since_ground);
843
844 free(ictx);
845 }
846
847 /* Reset input state and clear screen. */
848 void
849 input_reset(struct input_ctx *ictx, int clear)
850 {
851 struct screen_write_ctx *sctx = &ictx->ctx;
852 struct window_pane *wp = ictx->wp;
853
854 input_reset_cell(ictx);
855
856 if (clear && wp != NULL) {
857 if (TAILQ_EMPTY(&wp->modes))
858 screen_write_start_pane(sctx, wp, &wp->base);
859 else
860 screen_write_start(sctx, &wp->base);
861 screen_write_reset(sctx);
862 screen_write_stop(sctx);
863 }
864
865 input_clear(ictx);
866
867 ictx->last = -1;
868
869 ictx->state = &input_state_ground;
870 ictx->flags = 0;
871 }
872
873 /* Return pending data. */
874 struct evbuffer *
875 input_pending(struct input_ctx *ictx)
876 {
877 return (ictx->since_ground);
878 }
879
880 /* Change input state. */
881 static void
882 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
883 {
884 if (ictx->state->exit != NULL)
885 ictx->state->exit(ictx);
886 ictx->state = itr->state;
887 if (ictx->state->enter != NULL)
888 ictx->state->enter(ictx);
889 }
890
891 /* Parse data. */
892 static void
893 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
894 {
895 struct screen_write_ctx *sctx = &ictx->ctx;
896 const struct input_state *state = NULL;
897 const struct input_transition *itr = NULL;
898 size_t off = 0;
899
900 /* Parse the input. */
901 while (off < len) {
902 ictx->ch = buf[off++];
903
904 /* Find the transition. */
905 if (ictx->state != state ||
906 itr == NULL ||
907 ictx->ch < itr->first ||
908 ictx->ch > itr->last) {
909 itr = ictx->state->transitions;
910 while (itr->first != -1 && itr->last != -1) {
911 if (ictx->ch >= itr->first &&
912 ictx->ch <= itr->last)
913 break;
914 itr++;
915 }
916 if (itr->first == -1 || itr->last == -1) {
917 /* No transition? Eh? */
918 fatalx("no transition from state");
919 }
920 }
921 state = ictx->state;
922
923 /*
924 * Any state except print stops the current collection. This is
925 * an optimization to avoid checking if the attributes have
926 * changed for every character. It will stop unnecessarily for
927 * sequences that don't make a terminal change, but they should
928 * be the minority.
929 */
930 if (itr->handler != input_print)
931 screen_write_collect_end(sctx);
932
933 /*
934 * Execute the handler, if any. Don't switch state if it
935 * returns non-zero.
936 */
937 if (itr->handler != NULL && itr->handler(ictx) != 0)
938 continue;
939
940 /* And switch state, if necessary. */
941 if (itr->state != NULL)
942 input_set_state(ictx, itr);
943
944 /* If not in ground state, save input. */
945 if (ictx->state != &input_state_ground)
946 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
947 }
948 }
949
950 /* Parse input from pane. */
951 void
952 input_parse_pane(struct window_pane *wp)
953 {
954 void *new_data;
955 size_t new_size;
956
957 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
958 input_parse_buffer(wp, new_data, new_size);
959 window_pane_update_used_data(wp, &wp->offset, new_size);
960 }
961
962 /* Parse given input. */
963 void
964 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
965 {
966 struct input_ctx *ictx = wp->ictx;
967 struct screen_write_ctx *sctx = &ictx->ctx;
968
969 if (len == 0)
970 return;
971
972 window_update_activity(wp->window);
973 wp->flags |= PANE_CHANGED;
974
975 /* Flag new input while in a mode. */
976 if (!TAILQ_EMPTY(&wp->modes))
977 wp->flags |= PANE_UNSEENCHANGES;
978
979 /* NULL wp if there is a mode set as don't want to update the tty. */
980 if (TAILQ_EMPTY(&wp->modes))
981 screen_write_start_pane(sctx, wp, &wp->base);
982 else
983 screen_write_start(sctx, &wp->base);
984
985 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
986 ictx->state->name, len, (int)len, buf);
987
988 input_parse(ictx, buf, len);
989 screen_write_stop(sctx);
990 }
991
992 /* Parse given input for screen. */
993 void
994 input_parse_screen(struct input_ctx *ictx, struct screen *s,
995 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
996 {
997 struct screen_write_ctx *sctx = &ictx->ctx;
998
999 if (len == 0)
1000 return;
1001
1002 screen_write_start_callback(sctx, s, cb, arg);
1003 input_parse(ictx, buf, len);
1004 screen_write_stop(sctx);
1005 }
1006
1007 /* Split the parameter list (if any). */
1008 static int
1009 input_split(struct input_ctx *ictx)
1010 {
1011 const char *errstr;
1012 char *ptr, *out;
1013 struct input_param *ip;
1014 u_int i;
1015
1016 for (i = 0; i < ictx->param_list_len; i++) {
1017 if (ictx->param_list[i].type == INPUT_STRING)
1018 free(ictx->param_list[i].str);
1019 }
1020 ictx->param_list_len = 0;
1021
1022 if (ictx->param_len == 0)
1023 return (0);
1024 ip = &ictx->param_list[0];
1025
1026 ptr = ictx->param_buf;
1027 while ((out = strsep(&ptr, ";")) != NULL) {
1028 if (*out == '\0')
1029 ip->type = INPUT_MISSING;
1030 else {
1031 if (strchr(out, ':') != NULL) {
1032 ip->type = INPUT_STRING;
1033 ip->str = xstrdup(out);
1034 } else {
1035 ip->type = INPUT_NUMBER;
1036 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1037 if (errstr != NULL)
1038 return (-1);
1039 }
1040 }
1041 ip = &ictx->param_list[++ictx->param_list_len];
1042 if (ictx->param_list_len == nitems(ictx->param_list))
1043 return (-1);
1044 }
1045
1046 for (i = 0; i < ictx->param_list_len; i++) {
1047 ip = &ictx->param_list[i];
1048 if (ip->type == INPUT_MISSING)
1049 log_debug("parameter %u: missing", i);
1050 else if (ip->type == INPUT_STRING)
1051 log_debug("parameter %u: string %s", i, ip->str);
1052 else if (ip->type == INPUT_NUMBER)
1053 log_debug("parameter %u: number %d", i, ip->num);
1054 }
1055
1056 return (0);
1057 }
1058
1059 /* Get an argument or return default value. */
1060 static int
1061 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1062 {
1063 struct input_param *ip;
1064 int retval;
1065
1066 if (validx >= ictx->param_list_len)
1067 return (defval);
1068 ip = &ictx->param_list[validx];
1069 if (ip->type == INPUT_MISSING)
1070 return (defval);
1071 if (ip->type == INPUT_STRING)
1072 return (-1);
1073 retval = ip->num;
1074 if (retval < minval)
1075 return (minval);
1076 return (retval);
1077 }
1078
1079 /* Reply to terminal query. */
1080 static void
1081 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1082 {
1083 struct bufferevent *bev = ictx->event;
1084 va_list ap;
1085 char *reply;
1086
1087 if (bev == NULL)
1088 return;
1089
1090 va_start(ap, fmt);
1091 xvasprintf(&reply, fmt, ap);
1092 va_end(ap);
1093
1094 log_debug("%s: %s", __func__, reply);
1095 bufferevent_write(bev, reply, strlen(reply));
1096 free(reply);
1097 }
1098
1099 /* Clear saved state. */
1100 static void
1101 input_clear(struct input_ctx *ictx)
1102 {
1103 event_del(&ictx->timer);
1104
1105 *ictx->interm_buf = '\0';
1106 ictx->interm_len = 0;
1107
1108 *ictx->param_buf = '\0';
1109 ictx->param_len = 0;
1110
1111 *ictx->input_buf = '\0';
1112 ictx->input_len = 0;
1113
1114 ictx->input_end = INPUT_END_ST;
1115
1116 ictx->flags &= ~INPUT_DISCARD;
1117 }
1118
1119 /* Reset for ground state. */
1120 static void
1121 input_ground(struct input_ctx *ictx)
1122 {
1123 event_del(&ictx->timer);
1124 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1125
1126 if (ictx->input_space > INPUT_BUF_START) {
1127 ictx->input_space = INPUT_BUF_START;
1128 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1129 }
1130 }
1131
1132 /* Output this character to the screen. */
1133 static int
1134 input_print(struct input_ctx *ictx)
1135 {
1136 struct screen_write_ctx *sctx = &ictx->ctx;
1137 int set;
1138
1139 ictx->utf8started = 0; /* can't be valid UTF-8 */
1140
1141 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1142 if (set == 1)
1143 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1144 else
1145 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1146
1147 utf8_set(&ictx->cell.cell.data, ictx->ch);
1148 screen_write_collect_add(sctx, &ictx->cell.cell);
1149 ictx->last = ictx->ch;
1150
1151 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1152
1153 return (0);
1154 }
1155
1156 /* Collect intermediate string. */
1157 static int
1158 input_intermediate(struct input_ctx *ictx)
1159 {
1160 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1161 ictx->flags |= INPUT_DISCARD;
1162 else {
1163 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1164 ictx->interm_buf[ictx->interm_len] = '\0';
1165 }
1166
1167 return (0);
1168 }
1169
1170 /* Collect parameter string. */
1171 static int
1172 input_parameter(struct input_ctx *ictx)
1173 {
1174 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1175 ictx->flags |= INPUT_DISCARD;
1176 else {
1177 ictx->param_buf[ictx->param_len++] = ictx->ch;
1178 ictx->param_buf[ictx->param_len] = '\0';
1179 }
1180
1181 return (0);
1182 }
1183
1184 /* Collect input string. */
1185 static int
1186 input_input(struct input_ctx *ictx)
1187 {
1188 size_t available;
1189
1190 available = ictx->input_space;
1191 while (ictx->input_len + 1 >= available) {
1192 available *= 2;
1193 if (available > INPUT_BUF_LIMIT) {
1194 ictx->flags |= INPUT_DISCARD;
1195 return (0);
1196 }
1197 ictx->input_buf = xrealloc(ictx->input_buf, available);
1198 ictx->input_space = available;
1199 }
1200 ictx->input_buf[ictx->input_len++] = ictx->ch;
1201 ictx->input_buf[ictx->input_len] = '\0';
1202
1203 return (0);
1204 }
1205
1206 /* Execute C0 control sequence. */
1207 static int
1208 input_c0_dispatch(struct input_ctx *ictx)
1209 {
1210 struct screen_write_ctx *sctx = &ictx->ctx;
1211 struct window_pane *wp = ictx->wp;
1212 struct screen *s = sctx->s;
1213
1214 ictx->utf8started = 0; /* can't be valid UTF-8 */
1215
1216 log_debug("%s: '%c'", __func__, ictx->ch);
1217
1218 switch (ictx->ch) {
1219 case '\000': /* NUL */
1220 break;
1221 case '\007': /* BEL */
1222 if (wp != NULL)
1223 alerts_queue(wp->window, WINDOW_BELL);
1224 break;
1225 case '\010': /* BS */
1226 screen_write_backspace(sctx);
1227 break;
1228 case '\011': /* HT */
1229 /* Don't tab beyond the end of the line. */
1230 if (s->cx >= screen_size_x(s) - 1)
1231 break;
1232
1233 /* Find the next tab point, or use the last column if none. */
1234 do {
1235 s->cx++;
1236 if (bit_test(s->tabs, s->cx))
1237 break;
1238 } while (s->cx < screen_size_x(s) - 1);
1239 break;
1240 case '\012': /* LF */
1241 case '\013': /* VT */
1242 case '\014': /* FF */
1243 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1244 if (s->mode & MODE_CRLF)
1245 screen_write_carriagereturn(sctx);
1246 break;
1247 case '\015': /* CR */
1248 screen_write_carriagereturn(sctx);
1249 break;
1250 case '\016': /* SO */
1251 ictx->cell.set = 1;
1252 break;
1253 case '\017': /* SI */
1254 ictx->cell.set = 0;
1255 break;
1256 default:
1257 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1258 break;
1259 }
1260
1261 ictx->last = -1;
1262 return (0);
1263 }
1264
1265 /* Execute escape sequence. */
1266 static int
1267 input_esc_dispatch(struct input_ctx *ictx)
1268 {
1269 struct screen_write_ctx *sctx = &ictx->ctx;
1270 struct screen *s = sctx->s;
1271 struct input_table_entry *entry;
1272
1273 if (ictx->flags & INPUT_DISCARD)
1274 return (0);
1275 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1276
1277 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1278 sizeof input_esc_table[0], input_table_compare);
1279 if (entry == NULL) {
1280 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1281 return (0);
1282 }
1283
1284 switch (entry->type) {
1285 case INPUT_ESC_RIS:
1286 colour_palette_clear(ictx->palette);
1287 input_reset_cell(ictx);
1288 screen_write_reset(sctx);
1289 screen_write_fullredraw(sctx);
1290 break;
1291 case INPUT_ESC_IND:
1292 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1293 break;
1294 case INPUT_ESC_NEL:
1295 screen_write_carriagereturn(sctx);
1296 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1297 break;
1298 case INPUT_ESC_HTS:
1299 if (s->cx < screen_size_x(s))
1300 bit_set(s->tabs, s->cx);
1301 break;
1302 case INPUT_ESC_RI:
1303 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1304 break;
1305 case INPUT_ESC_DECKPAM:
1306 screen_write_mode_set(sctx, MODE_KKEYPAD);
1307 break;
1308 case INPUT_ESC_DECKPNM:
1309 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1310 break;
1311 case INPUT_ESC_DECSC:
1312 input_save_state(ictx);
1313 break;
1314 case INPUT_ESC_DECRC:
1315 input_restore_state(ictx);
1316 break;
1317 case INPUT_ESC_DECALN:
1318 screen_write_alignmenttest(sctx);
1319 break;
1320 case INPUT_ESC_SCSG0_ON:
1321 ictx->cell.g0set = 1;
1322 break;
1323 case INPUT_ESC_SCSG0_OFF:
1324 ictx->cell.g0set = 0;
1325 break;
1326 case INPUT_ESC_SCSG1_ON:
1327 ictx->cell.g1set = 1;
1328 break;
1329 case INPUT_ESC_SCSG1_OFF:
1330 ictx->cell.g1set = 0;
1331 break;
1332 case INPUT_ESC_ST:
1333 /* ST terminates OSC but the state transition already did it. */
1334 break;
1335 }
1336
1337 ictx->last = -1;
1338 return (0);
1339 }
1340
1341 /* Execute control sequence. */
1342 static int
1343 input_csi_dispatch(struct input_ctx *ictx)
1344 {
1345 struct screen_write_ctx *sctx = &ictx->ctx;
1346 struct screen *s = sctx->s;
1347 struct input_table_entry *entry;
1348 int i, n, m;
1349 u_int cx, bg = ictx->cell.cell.bg;
1350
1351 if (ictx->flags & INPUT_DISCARD)
1352 return (0);
1353
1354 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
1355 ictx->interm_buf, ictx->param_buf);
1356
1357 if (input_split(ictx) != 0)
1358 return (0);
1359
1360 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1361 sizeof input_csi_table[0], input_table_compare);
1362 if (entry == NULL) {
1363 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1364 return (0);
1365 }
1366
1367 switch (entry->type) {
1368 case INPUT_CSI_CBT:
1369 /* Find the previous tab point, n times. */
1370 cx = s->cx;
1371 if (cx > screen_size_x(s) - 1)
1372 cx = screen_size_x(s) - 1;
1373 n = input_get(ictx, 0, 1, 1);
1374 if (n == -1)
1375 break;
1376 while (cx > 0 && n-- > 0) {
1377 do
1378 cx--;
1379 while (cx > 0 && !bit_test(s->tabs, cx));
1380 }
1381 s->cx = cx;
1382 break;
1383 case INPUT_CSI_CUB:
1384 n = input_get(ictx, 0, 1, 1);
1385 if (n != -1)
1386 screen_write_cursorleft(sctx, n);
1387 break;
1388 case INPUT_CSI_CUD:
1389 n = input_get(ictx, 0, 1, 1);
1390 if (n != -1)
1391 screen_write_cursordown(sctx, n);
1392 break;
1393 case INPUT_CSI_CUF:
1394 n = input_get(ictx, 0, 1, 1);
1395 if (n != -1)
1396 screen_write_cursorright(sctx, n);
1397 break;
1398 case INPUT_CSI_CUP:
1399 n = input_get(ictx, 0, 1, 1);
1400 m = input_get(ictx, 1, 1, 1);
1401 if (n != -1 && m != -1)
1402 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1403 break;
1404 case INPUT_CSI_MODSET:
1405 n = input_get(ictx, 0, 0, 0);
1406 m = input_get(ictx, 1, 0, 0);
1407 if (options_get_number(global_options, "extended-keys") == 2)
1408 break;
1409 if (n == 0 || (n == 4 && m == 0))
1410 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1411 else if (n == 4 && (m == 1 || m == 2))
1412 screen_write_mode_set(sctx, MODE_KEXTENDED);
1413 break;
1414 case INPUT_CSI_MODOFF:
1415 n = input_get(ictx, 0, 0, 0);
1416 if (n == 4)
1417 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1418 break;
1419 case INPUT_CSI_WINOPS:
1420 input_csi_dispatch_winops(ictx);
1421 break;
1422 case INPUT_CSI_CUU:
1423 n = input_get(ictx, 0, 1, 1);
1424 if (n != -1)
1425 screen_write_cursorup(sctx, n);
1426 break;
1427 case INPUT_CSI_CNL:
1428 n = input_get(ictx, 0, 1, 1);
1429 if (n != -1) {
1430 screen_write_carriagereturn(sctx);
1431 screen_write_cursordown(sctx, n);
1432 }
1433 break;
1434 case INPUT_CSI_CPL:
1435 n = input_get(ictx, 0, 1, 1);
1436 if (n != -1) {
1437 screen_write_carriagereturn(sctx);
1438 screen_write_cursorup(sctx, n);
1439 }
1440 break;
1441 case INPUT_CSI_DA:
1442 switch (input_get(ictx, 0, 0, 0)) {
1443 case -1:
1444 break;
1445 case 0:
1446 input_reply(ictx, "\033[?1;2c");
1447 break;
1448 default:
1449 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1450 break;
1451 }
1452 break;
1453 case INPUT_CSI_DA_TWO:
1454 switch (input_get(ictx, 0, 0, 0)) {
1455 case -1:
1456 break;
1457 case 0:
1458 input_reply(ictx, "\033[>84;0;0c");
1459 break;
1460 default:
1461 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1462 break;
1463 }
1464 break;
1465 case INPUT_CSI_ECH:
1466 n = input_get(ictx, 0, 1, 1);
1467 if (n != -1)
1468 screen_write_clearcharacter(sctx, n, bg);
1469 break;
1470 case INPUT_CSI_DCH:
1471 n = input_get(ictx, 0, 1, 1);
1472 if (n != -1)
1473 screen_write_deletecharacter(sctx, n, bg);
1474 break;
1475 case INPUT_CSI_DECSTBM:
1476 n = input_get(ictx, 0, 1, 1);
1477 m = input_get(ictx, 1, 1, screen_size_y(s));
1478 if (n != -1 && m != -1)
1479 screen_write_scrollregion(sctx, n - 1, m - 1);
1480 break;
1481 case INPUT_CSI_DL:
1482 n = input_get(ictx, 0, 1, 1);
1483 if (n != -1)
1484 screen_write_deleteline(sctx, n, bg);
1485 break;
1486 case INPUT_CSI_DSR:
1487 switch (input_get(ictx, 0, 0, 0)) {
1488 case -1:
1489 break;
1490 case 5:
1491 input_reply(ictx, "\033[0n");
1492 break;
1493 case 6:
1494 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1495 break;
1496 default:
1497 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1498 break;
1499 }
1500 break;
1501 case INPUT_CSI_ED:
1502 switch (input_get(ictx, 0, 0, 0)) {
1503 case -1:
1504 break;
1505 case 0:
1506 screen_write_clearendofscreen(sctx, bg);
1507 break;
1508 case 1:
1509 screen_write_clearstartofscreen(sctx, bg);
1510 break;
1511 case 2:
1512 screen_write_clearscreen(sctx, bg);
1513 break;
1514 case 3:
1515 if (input_get(ictx, 1, 0, 0) == 0) {
1516 /*
1517 * Linux console extension to clear history
1518 * (for example before locking the screen).
1519 */
1520 screen_write_clearhistory(sctx);
1521 }
1522 break;
1523 default:
1524 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1525 break;
1526 }
1527 break;
1528 case INPUT_CSI_EL:
1529 switch (input_get(ictx, 0, 0, 0)) {
1530 case -1:
1531 break;
1532 case 0:
1533 screen_write_clearendofline(sctx, bg);
1534 break;
1535 case 1:
1536 screen_write_clearstartofline(sctx, bg);
1537 break;
1538 case 2:
1539 screen_write_clearline(sctx, bg);
1540 break;
1541 default:
1542 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1543 break;
1544 }
1545 break;
1546 case INPUT_CSI_HPA:
1547 n = input_get(ictx, 0, 1, 1);
1548 if (n != -1)
1549 screen_write_cursormove(sctx, n - 1, -1, 1);
1550 break;
1551 case INPUT_CSI_ICH:
1552 n = input_get(ictx, 0, 1, 1);
1553 if (n != -1)
1554 screen_write_insertcharacter(sctx, n, bg);
1555 break;
1556 case INPUT_CSI_IL:
1557 n = input_get(ictx, 0, 1, 1);
1558 if (n != -1)
1559 screen_write_insertline(sctx, n, bg);
1560 break;
1561 case INPUT_CSI_REP:
1562 n = input_get(ictx, 0, 1, 1);
1563 if (n == -1)
1564 break;
1565
1566 m = screen_size_x(s) - s->cx;
1567 if (n > m)
1568 n = m;
1569
1570 if (ictx->last == -1)
1571 break;
1572 ictx->ch = ictx->last;
1573
1574 for (i = 0; i < n; i++)
1575 input_print(ictx);
1576 break;
1577 case INPUT_CSI_RCP:
1578 input_restore_state(ictx);
1579 break;
1580 case INPUT_CSI_RM:
1581 input_csi_dispatch_rm(ictx);
1582 break;
1583 case INPUT_CSI_RM_PRIVATE:
1584 input_csi_dispatch_rm_private(ictx);
1585 break;
1586 case INPUT_CSI_SCP:
1587 input_save_state(ictx);
1588 break;
1589 case INPUT_CSI_SGR:
1590 input_csi_dispatch_sgr(ictx);
1591 break;
1592 case INPUT_CSI_SM:
1593 input_csi_dispatch_sm(ictx);
1594 break;
1595 case INPUT_CSI_SM_PRIVATE:
1596 input_csi_dispatch_sm_private(ictx);
1597 break;
1598 case INPUT_CSI_SU:
1599 n = input_get(ictx, 0, 1, 1);
1600 if (n != -1)
1601 screen_write_scrollup(sctx, n, bg);
1602 break;
1603 case INPUT_CSI_SD:
1604 n = input_get(ictx, 0, 1, 1);
1605 if (n != -1)
1606 screen_write_scrolldown(sctx, n, bg);
1607 break;
1608 case INPUT_CSI_TBC:
1609 switch (input_get(ictx, 0, 0, 0)) {
1610 case -1:
1611 break;
1612 case 0:
1613 if (s->cx < screen_size_x(s))
1614 bit_clear(s->tabs, s->cx);
1615 break;
1616 case 3:
1617 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1618 break;
1619 default:
1620 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1621 break;
1622 }
1623 break;
1624 case INPUT_CSI_VPA:
1625 n = input_get(ictx, 0, 1, 1);
1626 if (n != -1)
1627 screen_write_cursormove(sctx, -1, n - 1, 1);
1628 break;
1629 case INPUT_CSI_DECSCUSR:
1630 n = input_get(ictx, 0, 0, 0);
1631 if (n != -1)
1632 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1633 break;
1634 case INPUT_CSI_XDA:
1635 n = input_get(ictx, 0, 0, 0);
1636 if (n == 0)
1637 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1638 break;
1639
1640 }
1641
1642 ictx->last = -1;
1643 return (0);
1644 }
1645
1646 /* Handle CSI RM. */
1647 static void
1648 input_csi_dispatch_rm(struct input_ctx *ictx)
1649 {
1650 struct screen_write_ctx *sctx = &ictx->ctx;
1651 u_int i;
1652
1653 for (i = 0; i < ictx->param_list_len; i++) {
1654 switch (input_get(ictx, i, 0, -1)) {
1655 case -1:
1656 break;
1657 case 4: /* IRM */
1658 screen_write_mode_clear(sctx, MODE_INSERT);
1659 break;
1660 case 34:
1661 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1662 break;
1663 default:
1664 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1665 break;
1666 }
1667 }
1668 }
1669
1670 /* Handle CSI private RM. */
1671 static void
1672 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1673 {
1674 struct screen_write_ctx *sctx = &ictx->ctx;
1675 struct grid_cell *gc = &ictx->cell.cell;
1676 u_int i;
1677
1678 for (i = 0; i < ictx->param_list_len; i++) {
1679 switch (input_get(ictx, i, 0, -1)) {
1680 case -1:
1681 break;
1682 case 1: /* DECCKM */
1683 screen_write_mode_clear(sctx, MODE_KCURSOR);
1684 break;
1685 case 3: /* DECCOLM */
1686 screen_write_cursormove(sctx, 0, 0, 1);
1687 screen_write_clearscreen(sctx, gc->bg);
1688 break;
1689 case 6: /* DECOM */
1690 screen_write_mode_clear(sctx, MODE_ORIGIN);
1691 screen_write_cursormove(sctx, 0, 0, 1);
1692 break;
1693 case 7: /* DECAWM */
1694 screen_write_mode_clear(sctx, MODE_WRAP);
1695 break;
1696 case 12:
1697 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1698 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1699 break;
1700 case 25: /* TCEM */
1701 screen_write_mode_clear(sctx, MODE_CURSOR);
1702 break;
1703 case 1000:
1704 case 1001:
1705 case 1002:
1706 case 1003:
1707 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1708 break;
1709 case 1004:
1710 screen_write_mode_clear(sctx, MODE_FOCUSON);
1711 break;
1712 case 1005:
1713 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1714 break;
1715 case 1006:
1716 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1717 break;
1718 case 47:
1719 case 1047:
1720 screen_write_alternateoff(sctx, gc, 0);
1721 break;
1722 case 1049:
1723 screen_write_alternateoff(sctx, gc, 1);
1724 break;
1725 case 2004:
1726 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1727 break;
1728 default:
1729 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1730 break;
1731 }
1732 }
1733 }
1734
1735 /* Handle CSI SM. */
1736 static void
1737 input_csi_dispatch_sm(struct input_ctx *ictx)
1738 {
1739 struct screen_write_ctx *sctx = &ictx->ctx;
1740 u_int i;
1741
1742 for (i = 0; i < ictx->param_list_len; i++) {
1743 switch (input_get(ictx, i, 0, -1)) {
1744 case -1:
1745 break;
1746 case 4: /* IRM */
1747 screen_write_mode_set(sctx, MODE_INSERT);
1748 break;
1749 case 34:
1750 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1751 break;
1752 default:
1753 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1754 break;
1755 }
1756 }
1757 }
1758
1759 /* Handle CSI private SM. */
1760 static void
1761 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1762 {
1763 struct screen_write_ctx *sctx = &ictx->ctx;
1764 struct grid_cell *gc = &ictx->cell.cell;
1765 u_int i;
1766
1767 for (i = 0; i < ictx->param_list_len; i++) {
1768 switch (input_get(ictx, i, 0, -1)) {
1769 case -1:
1770 break;
1771 case 1: /* DECCKM */
1772 screen_write_mode_set(sctx, MODE_KCURSOR);
1773 break;
1774 case 3: /* DECCOLM */
1775 screen_write_cursormove(sctx, 0, 0, 1);
1776 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1777 break;
1778 case 6: /* DECOM */
1779 screen_write_mode_set(sctx, MODE_ORIGIN);
1780 screen_write_cursormove(sctx, 0, 0, 1);
1781 break;
1782 case 7: /* DECAWM */
1783 screen_write_mode_set(sctx, MODE_WRAP);
1784 break;
1785 case 12:
1786 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1787 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1788 break;
1789 case 25: /* TCEM */
1790 screen_write_mode_set(sctx, MODE_CURSOR);
1791 break;
1792 case 1000:
1793 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1794 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1795 break;
1796 case 1002:
1797 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1798 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1799 break;
1800 case 1003:
1801 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1802 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1803 break;
1804 case 1004:
1805 screen_write_mode_set(sctx, MODE_FOCUSON);
1806 break;
1807 case 1005:
1808 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1809 break;
1810 case 1006:
1811 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1812 break;
1813 case 47:
1814 case 1047:
1815 screen_write_alternateon(sctx, gc, 0);
1816 break;
1817 case 1049:
1818 screen_write_alternateon(sctx, gc, 1);
1819 break;
1820 case 2004:
1821 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1822 break;
1823 default:
1824 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1825 break;
1826 }
1827 }
1828 }
1829
1830 /* Handle CSI window operations. */
1831 static void
1832 input_csi_dispatch_winops(struct input_ctx *ictx)
1833 {
1834 struct screen_write_ctx *sctx = &ictx->ctx;
1835 struct screen *s = sctx->s;
1836 struct window_pane *wp = ictx->wp;
1837 u_int x = screen_size_x(s), y = screen_size_y(s);
1838 int n, m;
1839
1840 m = 0;
1841 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1842 switch (n) {
1843 case 1:
1844 case 2:
1845 case 5:
1846 case 6:
1847 case 7:
1848 case 11:
1849 case 13:
1850 case 14:
1851 case 19:
1852 case 20:
1853 case 21:
1854 case 24:
1855 break;
1856 case 3:
1857 case 4:
1858 case 8:
1859 m++;
1860 if (input_get(ictx, m, 0, -1) == -1)
1861 return;
1862 /* FALLTHROUGH */
1863 case 9:
1864 case 10:
1865 m++;
1866 if (input_get(ictx, m, 0, -1) == -1)
1867 return;
1868 break;
1869 case 22:
1870 m++;
1871 switch (input_get(ictx, m, 0, -1)) {
1872 case -1:
1873 return;
1874 case 0:
1875 case 2:
1876 screen_push_title(sctx->s);
1877 break;
1878 }
1879 break;
1880 case 23:
1881 m++;
1882 switch (input_get(ictx, m, 0, -1)) {
1883 case -1:
1884 return;
1885 case 0:
1886 case 2:
1887 screen_pop_title(sctx->s);
1888 if (wp == NULL)
1889 break;
1890 notify_pane("pane-title-changed", wp);
1891 server_redraw_window_borders(wp->window);
1892 server_status_window(wp->window);
1893 break;
1894 }
1895 break;
1896 case 18:
1897 input_reply(ictx, "\033[8;%u;%ut", y, x);
1898 break;
1899 default:
1900 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1901 break;
1902 }
1903 m++;
1904 }
1905 }
1906
1907 /* Helper for 256 colour SGR. */
1908 static int
1909 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1910 {
1911 struct grid_cell *gc = &ictx->cell.cell;
1912
1913 if (c == -1 || c > 255) {
1914 if (fgbg == 38)
1915 gc->fg = 8;
1916 else if (fgbg == 48)
1917 gc->bg = 8;
1918 } else {
1919 if (fgbg == 38)
1920 gc->fg = c | COLOUR_FLAG_256;
1921 else if (fgbg == 48)
1922 gc->bg = c | COLOUR_FLAG_256;
1923 else if (fgbg == 58)
1924 gc->us = c | COLOUR_FLAG_256;
1925 }
1926 return (1);
1927 }
1928
1929 /* Handle CSI SGR for 256 colours. */
1930 static void
1931 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1932 {
1933 int c;
1934
1935 c = input_get(ictx, (*i) + 1, 0, -1);
1936 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1937 (*i)++;
1938 }
1939
1940 /* Helper for RGB colour SGR. */
1941 static int
1942 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1943 int b)
1944 {
1945 struct grid_cell *gc = &ictx->cell.cell;
1946
1947 if (r == -1 || r > 255)
1948 return (0);
1949 if (g == -1 || g > 255)
1950 return (0);
1951 if (b == -1 || b > 255)
1952 return (0);
1953
1954 if (fgbg == 38)
1955 gc->fg = colour_join_rgb(r, g, b);
1956 else if (fgbg == 48)
1957 gc->bg = colour_join_rgb(r, g, b);
1958 else if (fgbg == 58)
1959 gc->us = colour_join_rgb(r, g, b);
1960 return (1);
1961 }
1962
1963 /* Handle CSI SGR for RGB colours. */
1964 static void
1965 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
1966 {
1967 int r, g, b;
1968
1969 r = input_get(ictx, (*i) + 1, 0, -1);
1970 g = input_get(ictx, (*i) + 2, 0, -1);
1971 b = input_get(ictx, (*i) + 3, 0, -1);
1972 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
1973 (*i) += 3;
1974 }
1975
1976 /* Handle CSI SGR with a ISO parameter. */
1977 static void
1978 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
1979 {
1980 struct grid_cell *gc = &ictx->cell.cell;
1981 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
1982 int p[8];
1983 u_int n;
1984 const char *errstr;
1985
1986 for (n = 0; n < nitems(p); n++)
1987 p[n] = -1;
1988 n = 0;
1989
1990 ptr = copy = xstrdup(s);
1991 while ((out = strsep(&ptr, ":")) != NULL) {
1992 if (*out != '\0') {
1993 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
1994 if (errstr != NULL || n == nitems(p)) {
1995 free(copy);
1996 return;
1997 }
1998 } else {
1999 n++;
2000 if (n == nitems(p)) {
2001 free(copy);
2002 return;
2003 }
2004 }
2005 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2006 }
2007 free(copy);
2008
2009 if (n == 0)
2010 return;
2011 if (p[0] == 4) {
2012 if (n != 2)
2013 return;
2014 switch (p[1]) {
2015 case 0:
2016 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2017 break;
2018 case 1:
2019 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2020 gc->attr |= GRID_ATTR_UNDERSCORE;
2021 break;
2022 case 2:
2023 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2024 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2025 break;
2026 case 3:
2027 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2028 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2029 break;
2030 case 4:
2031 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2032 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2033 break;
2034 case 5:
2035 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2036 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2037 break;
2038 }
2039 return;
2040 }
2041 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2042 return;
2043 switch (p[1]) {
2044 case 2:
2045 if (n < 3)
2046 break;
2047 if (n == 5)
2048 i = 2;
2049 else
2050 i = 3;
2051 if (n < i + 3)
2052 break;
2053 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2054 p[i + 2]);
2055 break;
2056 case 5:
2057 if (n < 3)
2058 break;
2059 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2060 break;
2061 }
2062 }
2063
2064 /* Handle CSI SGR. */
2065 static void
2066 input_csi_dispatch_sgr(struct input_ctx *ictx)
2067 {
2068 struct grid_cell *gc = &ictx->cell.cell;
2069 u_int i, link;
2070 int n;
2071
2072 if (ictx->param_list_len == 0) {
2073 memcpy(gc, &grid_default_cell, sizeof *gc);
2074 return;
2075 }
2076
2077 for (i = 0; i < ictx->param_list_len; i++) {
2078 if (ictx->param_list[i].type == INPUT_STRING) {
2079 input_csi_dispatch_sgr_colon(ictx, i);
2080 continue;
2081 }
2082 n = input_get(ictx, i, 0, 0);
2083 if (n == -1)
2084 continue;
2085
2086 if (n == 38 || n == 48 || n == 58) {
2087 i++;
2088 switch (input_get(ictx, i, 0, -1)) {
2089 case 2:
2090 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2091 break;
2092 case 5:
2093 input_csi_dispatch_sgr_256(ictx, n, &i);
2094 break;
2095 }
2096 continue;
2097 }
2098
2099 switch (n) {
2100 case 0:
2101 link = gc->link;
2102 memcpy(gc, &grid_default_cell, sizeof *gc);
2103 gc->link = link;
2104 break;
2105 case 1:
2106 gc->attr |= GRID_ATTR_BRIGHT;
2107 break;
2108 case 2:
2109 gc->attr |= GRID_ATTR_DIM;
2110 break;
2111 case 3:
2112 gc->attr |= GRID_ATTR_ITALICS;
2113 break;
2114 case 4:
2115 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2116 gc->attr |= GRID_ATTR_UNDERSCORE;
2117 break;
2118 case 5:
2119 case 6:
2120 gc->attr |= GRID_ATTR_BLINK;
2121 break;
2122 case 7:
2123 gc->attr |= GRID_ATTR_REVERSE;
2124 break;
2125 case 8:
2126 gc->attr |= GRID_ATTR_HIDDEN;
2127 break;
2128 case 9:
2129 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2130 break;
2131 case 21:
2132 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2133 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2134 break;
2135 case 22:
2136 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2137 break;
2138 case 23:
2139 gc->attr &= ~GRID_ATTR_ITALICS;
2140 break;
2141 case 24:
2142 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2143 break;
2144 case 25:
2145 gc->attr &= ~GRID_ATTR_BLINK;
2146 break;
2147 case 27:
2148 gc->attr &= ~GRID_ATTR_REVERSE;
2149 break;
2150 case 28:
2151 gc->attr &= ~GRID_ATTR_HIDDEN;
2152 break;
2153 case 29:
2154 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2155 break;
2156 case 30:
2157 case 31:
2158 case 32:
2159 case 33:
2160 case 34:
2161 case 35:
2162 case 36:
2163 case 37:
2164 gc->fg = n - 30;
2165 break;
2166 case 39:
2167 gc->fg = 8;
2168 break;
2169 case 40:
2170 case 41:
2171 case 42:
2172 case 43:
2173 case 44:
2174 case 45:
2175 case 46:
2176 case 47:
2177 gc->bg = n - 40;
2178 break;
2179 case 49:
2180 gc->bg = 8;
2181 break;
2182 case 53:
2183 gc->attr |= GRID_ATTR_OVERLINE;
2184 break;
2185 case 55:
2186 gc->attr &= ~GRID_ATTR_OVERLINE;
2187 break;
2188 case 59:
2189 gc->us = 8;
2190 break;
2191 case 90:
2192 case 91:
2193 case 92:
2194 case 93:
2195 case 94:
2196 case 95:
2197 case 96:
2198 case 97:
2199 gc->fg = n;
2200 break;
2201 case 100:
2202 case 101:
2203 case 102:
2204 case 103:
2205 case 104:
2206 case 105:
2207 case 106:
2208 case 107:
2209 gc->bg = n - 10;
2210 break;
2211 }
2212 }
2213 }
2214
2215 /* End of input with BEL. */
2216 static int
2217 input_end_bel(struct input_ctx *ictx)
2218 {
2219 log_debug("%s", __func__);
2220
2221 ictx->input_end = INPUT_END_BEL;
2222
2223 return (0);
2224 }
2225
2226 /* DCS string started. */
2227 static void
2228 input_enter_dcs(struct input_ctx *ictx)
2229 {
2230 log_debug("%s", __func__);
2231
2232 input_clear(ictx);
2233 input_start_timer(ictx);
2234 ictx->last = -1;
2235 }
2236
2237 /* DCS terminator (ST) received. */
2238 static int
2239 input_dcs_dispatch(struct input_ctx *ictx)
2240 {
2241 struct window_pane *wp = ictx->wp;
2242 struct screen_write_ctx *sctx = &ictx->ctx;
2243 u_char *buf = ictx->input_buf;
2244 size_t len = ictx->input_len;
2245 const char prefix[] = "tmux;";
2246 const u_int prefixlen = (sizeof prefix) - 1;
2247 long long allow_passthrough = 0;
2248
2249 if (wp == NULL)
2250 return (0);
2251 if (ictx->flags & INPUT_DISCARD) {
2252 log_debug("%s: %zu bytes (discard)", __func__, len);
2253 return (0);
2254 }
2255 log_debug("%s: %zu bytes", __func__, len);
2256
2257 allow_passthrough = options_get_number(wp->options, "allow-passthrough");
2258 if (!allow_passthrough)
2259 return (0);
2260 log_debug("%s: \"%s\"", __func__, buf);
2261
2262 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2263 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2264 allow_passthrough == 2);
2265 }
2266
2267 return (0);
2268 }
2269
2270 /* OSC string started. */
2271 static void
2272 input_enter_osc(struct input_ctx *ictx)
2273 {
2274 log_debug("%s", __func__);
2275
2276 input_clear(ictx);
2277 input_start_timer(ictx);
2278 ictx->last = -1;
2279 }
2280
2281 /* OSC terminator (ST) received. */
2282 static void
2283 input_exit_osc(struct input_ctx *ictx)
2284 {
2285 struct screen_write_ctx *sctx = &ictx->ctx;
2286 struct window_pane *wp = ictx->wp;
2287 u_char *p = ictx->input_buf;
2288 u_int option;
2289
2290 if (ictx->flags & INPUT_DISCARD)
2291 return;
2292 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2293 return;
2294
2295 log_debug("%s: \"%s\" (end %s)", __func__, p,
2296 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2297
2298 option = 0;
2299 while (*p >= '0' && *p <= '9')
2300 option = option * 10 + *p++ - '0';
2301 if (*p != ';' && *p != '\0')
2302 return;
2303 if (*p == ';')
2304 p++;
2305
2306 switch (option) {
2307 case 0:
2308 case 2:
2309 if (screen_set_title(sctx->s, p) && wp != NULL) {
2310 notify_pane("pane-title-changed", wp);
2311 server_redraw_window_borders(wp->window);
2312 server_status_window(wp->window);
2313 }
2314 break;
2315 case 4:
2316 input_osc_4(ictx, p);
2317 break;
2318 case 7:
2319 if (utf8_isvalid(p)) {
2320 screen_set_path(sctx->s, p);
2321 if (wp != NULL) {
2322 server_redraw_window_borders(wp->window);
2323 server_status_window(wp->window);
2324 }
2325 }
2326 break;
2327 case 8:
2328 input_osc_8(ictx, p);
2329 break;
2330 case 10:
2331 input_osc_10(ictx, p);
2332 break;
2333 case 11:
2334 input_osc_11(ictx, p);
2335 break;
2336 case 12:
2337 input_osc_12(ictx, p);
2338 break;
2339 case 52:
2340 input_osc_52(ictx, p);
2341 break;
2342 case 104:
2343 input_osc_104(ictx, p);
2344 break;
2345 case 110:
2346 input_osc_110(ictx, p);
2347 break;
2348 case 111:
2349 input_osc_111(ictx, p);
2350 break;
2351 case 112:
2352 input_osc_112(ictx, p);
2353 break;
2354 case 133:
2355 input_osc_133(ictx, p);
2356 break;
2357 default:
2358 log_debug("%s: unknown '%u'", __func__, option);
2359 break;
2360 }
2361 }
2362
2363 /* APC string started. */
2364 static void
2365 input_enter_apc(struct input_ctx *ictx)
2366 {
2367 log_debug("%s", __func__);
2368
2369 input_clear(ictx);
2370 input_start_timer(ictx);
2371 ictx->last = -1;
2372 }
2373
2374 /* APC terminator (ST) received. */
2375 static void
2376 input_exit_apc(struct input_ctx *ictx)
2377 {
2378 struct screen_write_ctx *sctx = &ictx->ctx;
2379 struct window_pane *wp = ictx->wp;
2380
2381 if (ictx->flags & INPUT_DISCARD)
2382 return;
2383 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2384
2385 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2386 notify_pane("pane-title-changed", wp);
2387 server_redraw_window_borders(wp->window);
2388 server_status_window(wp->window);
2389 }
2390 }
2391
2392 /* Rename string started. */
2393 static void
2394 input_enter_rename(struct input_ctx *ictx)
2395 {
2396 log_debug("%s", __func__);
2397
2398 input_clear(ictx);
2399 input_start_timer(ictx);
2400 ictx->last = -1;
2401 }
2402
2403 /* Rename terminator (ST) received. */
2404 static void
2405 input_exit_rename(struct input_ctx *ictx)
2406 {
2407 struct window_pane *wp = ictx->wp;
2408 struct window *w;
2409 struct options_entry *o;
2410
2411 if (wp == NULL)
2412 return;
2413 if (ictx->flags & INPUT_DISCARD)
2414 return;
2415 if (!options_get_number(ictx->wp->options, "allow-rename"))
2416 return;
2417 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2418
2419 if (!utf8_isvalid(ictx->input_buf))
2420 return;
2421 w = wp->window;
2422
2423 if (ictx->input_len == 0) {
2424 o = options_get_only(w->options, "automatic-rename");
2425 if (o != NULL)
2426 options_remove_or_default(o, -1, NULL);
2427 if (!options_get_number(w->options, "automatic-rename"))
2428 window_set_name(w, "");
2429 } else {
2430 options_set_number(w->options, "automatic-rename", 0);
2431 window_set_name(w, ictx->input_buf);
2432 }
2433 server_redraw_window_borders(w);
2434 server_status_window(w);
2435 }
2436
2437 /* Open UTF-8 character. */
2438 static int
2439 input_top_bit_set(struct input_ctx *ictx)
2440 {
2441 struct screen_write_ctx *sctx = &ictx->ctx;
2442 struct utf8_data *ud = &ictx->utf8data;
2443
2444 ictx->last = -1;
2445
2446 if (!ictx->utf8started) {
2447 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2448 return (0);
2449 ictx->utf8started = 1;
2450 return (0);
2451 }
2452
2453 switch (utf8_append(ud, ictx->ch)) {
2454 case UTF8_MORE:
2455 return (0);
2456 case UTF8_ERROR:
2457 ictx->utf8started = 0;
2458 return (0);
2459 case UTF8_DONE:
2460 break;
2461 }
2462 ictx->utf8started = 0;
2463
2464 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2465 (int)ud->size, ud->data, ud->width);
2466
2467 utf8_copy(&ictx->cell.cell.data, ud);
2468 screen_write_collect_add(sctx, &ictx->cell.cell);
2469
2470 return (0);
2471 }
2472
2473 /* Reply to a colour request. */
2474 static void
2475 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2476 {
2477 u_char r, g, b;
2478 const char *end;
2479
2480 if (c != -1)
2481 c = colour_force_rgb(c);
2482 if (c == -1)
2483 return;
2484 colour_split_rgb(c, &r, &g, &b);
2485
2486 if (ictx->input_end == INPUT_END_BEL)
2487 end = "\007";
2488 else
2489 end = "\033\\";
2490 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2491 n, r, r, g, g, b, b, end);
2492 }
2493
2494 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2495 static void
2496 input_osc_4(struct input_ctx *ictx, const char *p)
2497 {
2498 char *copy, *s, *next = NULL;
2499 long idx;
2500 int c, bad = 0, redraw = 0;
2501
2502 copy = s = xstrdup(p);
2503 while (s != NULL && *s != '\0') {
2504 idx = strtol(s, &next, 10);
2505 if (*next++ != ';') {
2506 bad = 1;
2507 break;
2508 }
2509 if (idx < 0 || idx >= 256) {
2510 bad = 1;
2511 break;
2512 }
2513
2514 s = strsep(&next, ";");
2515 if (strcmp(s, "?") == 0) {
2516 c = colour_palette_get(ictx->palette, idx);
2517 if (c != -1)
2518 input_osc_colour_reply(ictx, 4, c);
2519 continue;
2520 }
2521 if ((c = colour_parseX11(s)) == -1) {
2522 s = next;
2523 continue;
2524 }
2525 if (colour_palette_set(ictx->palette, idx, c))
2526 redraw = 1;
2527 s = next;
2528 }
2529 if (bad)
2530 log_debug("bad OSC 4: %s", p);
2531 if (redraw)
2532 screen_write_fullredraw(&ictx->ctx);
2533 free(copy);
2534 }
2535
2536 /* Handle the OSC 8 sequence for embedding hyperlinks. */
2537 static void
2538 input_osc_8(struct input_ctx *ictx, const char *p)
2539 {
2540 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2541 struct grid_cell *gc = &ictx->cell.cell;
2542 const char *start, *end, *uri;
2543 char *id = NULL;
2544
2545 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
2546 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2547 if (id != NULL)
2548 goto bad;
2549 id = xstrndup(start + 3, end - start - 3);
2550 }
2551
2552 /* The first ; is the end of parameters and start of the URI. */
2553 if (*end == ';')
2554 break;
2555 }
2556 if (end == NULL || *end != ';')
2557 goto bad;
2558 uri = end + 1;
2559 if (*uri == '\0') {
2560 gc->link = 0;
2561 free(id);
2562 return;
2563 }
2564 gc->link = hyperlinks_put(hl, uri, id);
2565 if (id == NULL)
2566 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2567 else
2568 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2569 free(id);
2570 return;
2571
2572 bad:
2573 log_debug("bad OSC 8 %s", p);
2574 free(id);
2575 }
2576
2577 /*
2578 * Get a client with a foreground for the pane. There isn't much to choose
2579 * between them so just use the first.
2580 */
2581 static int
2582 input_get_fg_client(struct window_pane *wp)
2583 {
2584 struct window *w = wp->window;
2585 struct client *loop;
2586
2587 TAILQ_FOREACH(loop, &clients, entry) {
2588 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2589 continue;
2590 if (loop->session == NULL || !session_has(loop->session, w))
2591 continue;
2592 if (loop->tty.fg == -1)
2593 continue;
2594 return (loop->tty.fg);
2595 }
2596 return (-1);
2597 }
2598
2599 /* Get a client with a background for the pane. */
2600 static int
2601 input_get_bg_client(struct window_pane *wp)
2602 {
2603 struct window *w = wp->window;
2604 struct client *loop;
2605
2606 TAILQ_FOREACH(loop, &clients, entry) {
2607 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2608 continue;
2609 if (loop->session == NULL || !session_has(loop->session, w))
2610 continue;
2611 if (loop->tty.bg == -1)
2612 continue;
2613 return (loop->tty.bg);
2614 }
2615 return (-1);
2616 }
2617
2618 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2619 static void
2620 input_osc_10(struct input_ctx *ictx, const char *p)
2621 {
2622 struct window_pane *wp = ictx->wp;
2623 struct grid_cell defaults;
2624 int c;
2625
2626 if (strcmp(p, "?") == 0) {
2627 if (wp == NULL)
2628 return;
2629 tty_default_colours(&defaults, wp);
2630 if (COLOUR_DEFAULT(defaults.fg))
2631 c = input_get_fg_client(wp);
2632 else
2633 c = defaults.fg;
2634 input_osc_colour_reply(ictx, 10, c);
2635 return;
2636 }
2637
2638 if ((c = colour_parseX11(p)) == -1) {
2639 log_debug("bad OSC 10: %s", p);
2640 return;
2641 }
2642 if (ictx->palette != NULL) {
2643 ictx->palette->fg = c;
2644 if (wp != NULL)
2645 wp->flags |= PANE_STYLECHANGED;
2646 screen_write_fullredraw(&ictx->ctx);
2647 }
2648 }
2649
2650 /* Handle the OSC 110 sequence for resetting foreground colour. */
2651 static void
2652 input_osc_110(struct input_ctx *ictx, const char *p)
2653 {
2654 struct window_pane *wp = ictx->wp;
2655
2656 if (*p != '\0')
2657 return;
2658 if (ictx->palette != NULL) {
2659 ictx->palette->fg = 8;
2660 if (wp != NULL)
2661 wp->flags |= PANE_STYLECHANGED;
2662 screen_write_fullredraw(&ictx->ctx);
2663 }
2664 }
2665
2666 /* Handle the OSC 11 sequence for setting and querying background colour. */
2667 static void
2668 input_osc_11(struct input_ctx *ictx, const char *p)
2669 {
2670 struct window_pane *wp = ictx->wp;
2671 struct grid_cell defaults;
2672 int c;
2673
2674 if (strcmp(p, "?") == 0) {
2675 if (wp == NULL)
2676 return;
2677 tty_default_colours(&defaults, wp);
2678 if (COLOUR_DEFAULT(defaults.bg))
2679 c = input_get_bg_client(wp);
2680 else
2681 c = defaults.bg;
2682 input_osc_colour_reply(ictx, 11, c);
2683 return;
2684 }
2685
2686 if ((c = colour_parseX11(p)) == -1) {
2687 log_debug("bad OSC 11: %s", p);
2688 return;
2689 }
2690 if (ictx->palette != NULL) {
2691 ictx->palette->bg = c;
2692 if (wp != NULL)
2693 wp->flags |= PANE_STYLECHANGED;
2694 screen_write_fullredraw(&ictx->ctx);
2695 }
2696 }
2697
2698 /* Handle the OSC 111 sequence for resetting background colour. */
2699 static void
2700 input_osc_111(struct input_ctx *ictx, const char *p)
2701 {
2702 struct window_pane *wp = ictx->wp;
2703
2704 if (*p != '\0')
2705 return;
2706 if (ictx->palette != NULL) {
2707 ictx->palette->bg = 8;
2708 if (wp != NULL)
2709 wp->flags |= PANE_STYLECHANGED;
2710 screen_write_fullredraw(&ictx->ctx);
2711 }
2712 }
2713
2714 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2715 static void
2716 input_osc_12(struct input_ctx *ictx, const char *p)
2717 {
2718 struct window_pane *wp = ictx->wp;
2719 int c;
2720
2721 if (strcmp(p, "?") == 0) {
2722 if (wp != NULL) {
2723 c = ictx->ctx.s->ccolour;
2724 if (c == -1)
2725 c = ictx->ctx.s->default_ccolour;
2726 input_osc_colour_reply(ictx, 12, c);
2727 }
2728 return;
2729 }
2730
2731 if ((c = colour_parseX11(p)) == -1) {
2732 log_debug("bad OSC 12: %s", p);
2733 return;
2734 }
2735 screen_set_cursor_colour(ictx->ctx.s, c);
2736 }
2737
2738 /* Handle the OSC 112 sequence for resetting cursor colour. */
2739 static void
2740 input_osc_112(struct input_ctx *ictx, const char *p)
2741 {
2742 if (*p == '\0') /* no arguments allowed */
2743 screen_set_cursor_colour(ictx->ctx.s, -1);
2744 }
2745
2746 /* Handle the OSC 133 sequence. */
2747 static void
2748 input_osc_133(struct input_ctx *ictx, const char *p)
2749 {
2750 struct grid *gd = ictx->ctx.s->grid;
2751 u_int line = ictx->ctx.s->cy + gd->hsize;
2752 struct grid_line *gl;
2753
2754 if (line > gd->hsize + gd->sy - 1)
2755 return;
2756 gl = grid_get_line(gd, line);
2757
2758 switch (*p) {
2759 case 'A':
2760 gl->flags |= GRID_LINE_START_PROMPT;
2761 break;
2762 case 'C':
2763 gl->flags |= GRID_LINE_START_OUTPUT;
2764 break;
2765 }
2766 }
2767
2768 /* Handle the OSC 52 sequence for setting the clipboard. */
2769 static void
2770 input_osc_52(struct input_ctx *ictx, const char *p)
2771 {
2772 struct window_pane *wp = ictx->wp;
2773 char *end;
2774 const char *buf = NULL;
2775 size_t len = 0;
2776 u_char *out;
2777 int outlen, state;
2778 struct screen_write_ctx ctx;
2779 struct paste_buffer *pb;
2780 const char* allow = "cpqs01234567";
2781 char flags[sizeof "cpqs01234567"] = "";
2782 u_int i, j = 0;
2783
2784 if (wp == NULL)
2785 return;
2786 state = options_get_number(global_options, "set-clipboard");
2787 if (state != 2)
2788 return;
2789
2790 if ((end = strchr(p, ';')) == NULL)
2791 return;
2792 end++;
2793 if (*end == '\0')
2794 return;
2795 log_debug("%s: %s", __func__, end);
2796
2797 for (i = 0; p + i != end; i++) {
2798 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2799 flags[j++] = p[i];
2800 }
2801 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2802
2803 if (strcmp(end, "?") == 0) {
2804 if ((pb = paste_get_top(NULL)) != NULL)
2805 buf = paste_buffer_data(pb, &len);
2806 if (ictx->input_end == INPUT_END_BEL)
2807 input_reply_clipboard(ictx->event, buf, len, "\007");
2808 else
2809 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2810 return;
2811 }
2812
2813 len = (strlen(end) / 4) * 3;
2814 if (len == 0)
2815 return;
2816
2817 out = xmalloc(len);
2818 if ((outlen = b64_pton(end, out, len)) == -1) {
2819 free(out);
2820 return;
2821 }
2822
2823 screen_write_start_pane(&ctx, wp, NULL);
2824 screen_write_setselection(&ctx, flags, out, outlen);
2825 screen_write_stop(&ctx);
2826 notify_pane("pane-set-clipboard", wp);
2827
2828 paste_add(NULL, out, outlen);
2829 }
2830
2831 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2832 static void
2833 input_osc_104(struct input_ctx *ictx, const char *p)
2834 {
2835 char *copy, *s;
2836 long idx;
2837 int bad = 0, redraw = 0;
2838
2839 if (*p == '\0') {
2840 colour_palette_clear(ictx->palette);
2841 screen_write_fullredraw(&ictx->ctx);
2842 return;
2843 }
2844
2845 copy = s = xstrdup(p);
2846 while (*s != '\0') {
2847 idx = strtol(s, &s, 10);
2848 if (*s != '\0' && *s != ';') {
2849 bad = 1;
2850 break;
2851 }
2852 if (idx < 0 || idx >= 256) {
2853 bad = 1;
2854 break;
2855 }
2856 if (colour_palette_set(ictx->palette, idx, -1))
2857 redraw = 1;
2858 if (*s == ';')
2859 s++;
2860 }
2861 if (bad)
2862 log_debug("bad OSC 104: %s", p);
2863 if (redraw)
2864 screen_write_fullredraw(&ictx->ctx);
2865 free(copy);
2866 }
2867
2868 void
2869 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2870 const char *end)
2871 {
2872 char *out = NULL;
2873 int outlen = 0;
2874
2875 if (buf != NULL && len != 0) {
2876 if (len >= ((size_t)INT_MAX * 3 / 4) - 1)
2877 return;
2878 outlen = 4 * ((len + 2) / 3) + 1;
2879 out = xmalloc(outlen);
2880 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2881 free(out);
2882 return;
2883 }
2884 }
2885
2886 bufferevent_write(bev, "\033]52;;", 6);
2887 if (outlen != 0)
2888 bufferevent_write(bev, out, outlen);
2889 bufferevent_write(bev, end, strlen(end));
2890 free(out);
2891 }
tmux -- terminal multiplexer similar to GNU Screen