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Do not risk writing over the end of the buffer when it ends in #
[tmux-openbsd.git] / input.c
blobdd22ac75b98206b4fb8d6aacd2324e91f59cb2a2
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #include <netinet/in.h>
22
23 #include <ctype.h>
24 #include <resolv.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <time.h>
28
29 #include "tmux.h"
30
31 /*
32 * Based on the description by Paul Williams at:
33 *
34 * https://vt100.net/emu/dec_ansi_parser
35 *
36 * With the following changes:
37 *
38 * - 7-bit only.
39 *
40 * - Support for UTF-8.
41 *
42 * - OSC (but not APC) may be terminated by \007 as well as ST.
43 *
44 * - A state for APC similar to OSC. Some terminals appear to use this to set
45 * the title.
46 *
47 * - A state for the screen \033k...\033\\ sequence to rename a window. This is
48 * pretty stupid but not supporting it is more trouble than it is worth.
49 *
50 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to
51 * be passed to the underlying terminals.
52 */
53
54 /* Input parser cell. */
55 struct input_cell {
56 struct grid_cell cell;
57 int set;
58 int g0set; /* 1 if ACS */
59 int g1set; /* 1 if ACS */
60 };
61
62 /* Input parser argument. */
63 struct input_param {
64 enum {
65 INPUT_MISSING,
66 INPUT_NUMBER,
67 INPUT_STRING
68 } type;
69 union {
70 int num;
71 char *str;
72 };
73 };
74
75 /* Input parser context. */
76 struct input_ctx {
77 struct window_pane *wp;
78 struct bufferevent *event;
79 struct screen_write_ctx ctx;
80 struct colour_palette *palette;
81
82 struct input_cell cell;
83
84 struct input_cell old_cell;
85 u_int old_cx;
86 u_int old_cy;
87 int old_mode;
88
89 u_char interm_buf[4];
90 size_t interm_len;
91
92 u_char param_buf[64];
93 size_t param_len;
94
95 #define INPUT_BUF_START 32
96 #define INPUT_BUF_LIMIT 1048576
97 u_char *input_buf;
98 size_t input_len;
99 size_t input_space;
100 enum {
101 INPUT_END_ST,
102 INPUT_END_BEL
103 } input_end;
104
105 struct input_param param_list[24];
106 u_int param_list_len;
107
108 struct utf8_data utf8data;
109 int utf8started;
110
111 int ch;
112 int last;
113
114 int flags;
115 #define INPUT_DISCARD 0x1
116
117 const struct input_state *state;
118
119 struct event timer;
120
121 /*
122 * All input received since we were last in the ground state. Sent to
123 * control clients on connection.
124 */
125 struct evbuffer *since_ground;
126 };
127
128 /* Helper functions. */
129 struct input_transition;
130 static int input_split(struct input_ctx *);
131 static int input_get(struct input_ctx *, u_int, int, int);
132 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...);
133 static void input_set_state(struct input_ctx *,
134 const struct input_transition *);
135 static void input_reset_cell(struct input_ctx *);
136
137 static void input_osc_4(struct input_ctx *, const char *);
138 static void input_osc_8(struct input_ctx *, const char *);
139 static void input_osc_10(struct input_ctx *, const char *);
140 static void input_osc_11(struct input_ctx *, const char *);
141 static void input_osc_12(struct input_ctx *, const char *);
142 static void input_osc_52(struct input_ctx *, const char *);
143 static void input_osc_104(struct input_ctx *, const char *);
144 static void input_osc_110(struct input_ctx *, const char *);
145 static void input_osc_111(struct input_ctx *, const char *);
146 static void input_osc_112(struct input_ctx *, const char *);
147
148 /* Transition entry/exit handlers. */
149 static void input_clear(struct input_ctx *);
150 static void input_ground(struct input_ctx *);
151 static void input_enter_dcs(struct input_ctx *);
152 static void input_enter_osc(struct input_ctx *);
153 static void input_exit_osc(struct input_ctx *);
154 static void input_enter_apc(struct input_ctx *);
155 static void input_exit_apc(struct input_ctx *);
156 static void input_enter_rename(struct input_ctx *);
157 static void input_exit_rename(struct input_ctx *);
158
159 /* Input state handlers. */
160 static int input_print(struct input_ctx *);
161 static int input_intermediate(struct input_ctx *);
162 static int input_parameter(struct input_ctx *);
163 static int input_input(struct input_ctx *);
164 static int input_c0_dispatch(struct input_ctx *);
165 static int input_esc_dispatch(struct input_ctx *);
166 static int input_csi_dispatch(struct input_ctx *);
167 static void input_csi_dispatch_rm(struct input_ctx *);
168 static void input_csi_dispatch_rm_private(struct input_ctx *);
169 static void input_csi_dispatch_sm(struct input_ctx *);
170 static void input_csi_dispatch_sm_private(struct input_ctx *);
171 static void input_csi_dispatch_winops(struct input_ctx *);
172 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
173 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
174 static void input_csi_dispatch_sgr(struct input_ctx *);
175 static int input_dcs_dispatch(struct input_ctx *);
176 static int input_top_bit_set(struct input_ctx *);
177 static int input_end_bel(struct input_ctx *);
178
179 /* Command table comparison function. */
180 static int input_table_compare(const void *, const void *);
181
182 /* Command table entry. */
183 struct input_table_entry {
184 int ch;
185 const char *interm;
186 int type;
187 };
188
189 /* Escape commands. */
190 enum input_esc_type {
191 INPUT_ESC_DECALN,
192 INPUT_ESC_DECKPAM,
193 INPUT_ESC_DECKPNM,
194 INPUT_ESC_DECRC,
195 INPUT_ESC_DECSC,
196 INPUT_ESC_HTS,
197 INPUT_ESC_IND,
198 INPUT_ESC_NEL,
199 INPUT_ESC_RI,
200 INPUT_ESC_RIS,
201 INPUT_ESC_SCSG0_OFF,
202 INPUT_ESC_SCSG0_ON,
203 INPUT_ESC_SCSG1_OFF,
204 INPUT_ESC_SCSG1_ON,
205 INPUT_ESC_ST,
206 };
207
208 /* Escape command table. */
209 static const struct input_table_entry input_esc_table[] = {
210 { '0', "(", INPUT_ESC_SCSG0_ON },
211 { '0', ")", INPUT_ESC_SCSG1_ON },
212 { '7', "", INPUT_ESC_DECSC },
213 { '8', "", INPUT_ESC_DECRC },
214 { '8', "#", INPUT_ESC_DECALN },
215 { '=', "", INPUT_ESC_DECKPAM },
216 { '>', "", INPUT_ESC_DECKPNM },
217 { 'B', "(", INPUT_ESC_SCSG0_OFF },
218 { 'B', ")", INPUT_ESC_SCSG1_OFF },
219 { 'D', "", INPUT_ESC_IND },
220 { 'E', "", INPUT_ESC_NEL },
221 { 'H', "", INPUT_ESC_HTS },
222 { 'M', "", INPUT_ESC_RI },
223 { '\\', "", INPUT_ESC_ST },
224 { 'c', "", INPUT_ESC_RIS },
225 };
226
227 /* Control (CSI) commands. */
228 enum input_csi_type {
229 INPUT_CSI_CBT,
230 INPUT_CSI_CNL,
231 INPUT_CSI_CPL,
232 INPUT_CSI_CUB,
233 INPUT_CSI_CUD,
234 INPUT_CSI_CUF,
235 INPUT_CSI_CUP,
236 INPUT_CSI_CUU,
237 INPUT_CSI_DA,
238 INPUT_CSI_DA_TWO,
239 INPUT_CSI_DCH,
240 INPUT_CSI_DECSCUSR,
241 INPUT_CSI_DECSTBM,
242 INPUT_CSI_DL,
243 INPUT_CSI_DSR,
244 INPUT_CSI_ECH,
245 INPUT_CSI_ED,
246 INPUT_CSI_EL,
247 INPUT_CSI_HPA,
248 INPUT_CSI_ICH,
249 INPUT_CSI_IL,
250 INPUT_CSI_MODOFF,
251 INPUT_CSI_MODSET,
252 INPUT_CSI_RCP,
253 INPUT_CSI_REP,
254 INPUT_CSI_RM,
255 INPUT_CSI_RM_PRIVATE,
256 INPUT_CSI_SCP,
257 INPUT_CSI_SD,
258 INPUT_CSI_SGR,
259 INPUT_CSI_SM,
260 INPUT_CSI_SM_PRIVATE,
261 INPUT_CSI_SU,
262 INPUT_CSI_TBC,
263 INPUT_CSI_VPA,
264 INPUT_CSI_WINOPS,
265 INPUT_CSI_XDA,
266 };
267
268 /* Control (CSI) command table. */
269 static const struct input_table_entry input_csi_table[] = {
270 { '@', "", INPUT_CSI_ICH },
271 { 'A', "", INPUT_CSI_CUU },
272 { 'B', "", INPUT_CSI_CUD },
273 { 'C', "", INPUT_CSI_CUF },
274 { 'D', "", INPUT_CSI_CUB },
275 { 'E', "", INPUT_CSI_CNL },
276 { 'F', "", INPUT_CSI_CPL },
277 { 'G', "", INPUT_CSI_HPA },
278 { 'H', "", INPUT_CSI_CUP },
279 { 'J', "", INPUT_CSI_ED },
280 { 'K', "", INPUT_CSI_EL },
281 { 'L', "", INPUT_CSI_IL },
282 { 'M', "", INPUT_CSI_DL },
283 { 'P', "", INPUT_CSI_DCH },
284 { 'S', "", INPUT_CSI_SU },
285 { 'T', "", INPUT_CSI_SD },
286 { 'X', "", INPUT_CSI_ECH },
287 { 'Z', "", INPUT_CSI_CBT },
288 { '`', "", INPUT_CSI_HPA },
289 { 'b', "", INPUT_CSI_REP },
290 { 'c', "", INPUT_CSI_DA },
291 { 'c', ">", INPUT_CSI_DA_TWO },
292 { 'd', "", INPUT_CSI_VPA },
293 { 'f', "", INPUT_CSI_CUP },
294 { 'g', "", INPUT_CSI_TBC },
295 { 'h', "", INPUT_CSI_SM },
296 { 'h', "?", INPUT_CSI_SM_PRIVATE },
297 { 'l', "", INPUT_CSI_RM },
298 { 'l', "?", INPUT_CSI_RM_PRIVATE },
299 { 'm', "", INPUT_CSI_SGR },
300 { 'm', ">", INPUT_CSI_MODSET },
301 { 'n', "", INPUT_CSI_DSR },
302 { 'n', ">", INPUT_CSI_MODOFF },
303 { 'q', " ", INPUT_CSI_DECSCUSR },
304 { 'q', ">", INPUT_CSI_XDA },
305 { 'r', "", INPUT_CSI_DECSTBM },
306 { 's', "", INPUT_CSI_SCP },
307 { 't', "", INPUT_CSI_WINOPS },
308 { 'u', "", INPUT_CSI_RCP },
309 };
310
311 /* Input transition. */
312 struct input_transition {
313 int first;
314 int last;
315
316 int (*handler)(struct input_ctx *);
317 const struct input_state *state;
318 };
319
320 /* Input state. */
321 struct input_state {
322 const char *name;
323 void (*enter)(struct input_ctx *);
324 void (*exit)(struct input_ctx *);
325 const struct input_transition *transitions;
326 };
327
328 /* State transitions available from all states. */
329 #define INPUT_STATE_ANYWHERE \
330 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
331 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
332 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
333
334 /* Forward declarations of state tables. */
335 static const struct input_transition input_state_ground_table[];
336 static const struct input_transition input_state_esc_enter_table[];
337 static const struct input_transition input_state_esc_intermediate_table[];
338 static const struct input_transition input_state_csi_enter_table[];
339 static const struct input_transition input_state_csi_parameter_table[];
340 static const struct input_transition input_state_csi_intermediate_table[];
341 static const struct input_transition input_state_csi_ignore_table[];
342 static const struct input_transition input_state_dcs_enter_table[];
343 static const struct input_transition input_state_dcs_parameter_table[];
344 static const struct input_transition input_state_dcs_intermediate_table[];
345 static const struct input_transition input_state_dcs_handler_table[];
346 static const struct input_transition input_state_dcs_escape_table[];
347 static const struct input_transition input_state_dcs_ignore_table[];
348 static const struct input_transition input_state_osc_string_table[];
349 static const struct input_transition input_state_apc_string_table[];
350 static const struct input_transition input_state_rename_string_table[];
351 static const struct input_transition input_state_consume_st_table[];
352
353 /* ground state definition. */
354 static const struct input_state input_state_ground = {
355 "ground",
356 input_ground, NULL,
357 input_state_ground_table
358 };
359
360 /* esc_enter state definition. */
361 static const struct input_state input_state_esc_enter = {
362 "esc_enter",
363 input_clear, NULL,
364 input_state_esc_enter_table
365 };
366
367 /* esc_intermediate state definition. */
368 static const struct input_state input_state_esc_intermediate = {
369 "esc_intermediate",
370 NULL, NULL,
371 input_state_esc_intermediate_table
372 };
373
374 /* csi_enter state definition. */
375 static const struct input_state input_state_csi_enter = {
376 "csi_enter",
377 input_clear, NULL,
378 input_state_csi_enter_table
379 };
380
381 /* csi_parameter state definition. */
382 static const struct input_state input_state_csi_parameter = {
383 "csi_parameter",
384 NULL, NULL,
385 input_state_csi_parameter_table
386 };
387
388 /* csi_intermediate state definition. */
389 static const struct input_state input_state_csi_intermediate = {
390 "csi_intermediate",
391 NULL, NULL,
392 input_state_csi_intermediate_table
393 };
394
395 /* csi_ignore state definition. */
396 static const struct input_state input_state_csi_ignore = {
397 "csi_ignore",
398 NULL, NULL,
399 input_state_csi_ignore_table
400 };
401
402 /* dcs_enter state definition. */
403 static const struct input_state input_state_dcs_enter = {
404 "dcs_enter",
405 input_enter_dcs, NULL,
406 input_state_dcs_enter_table
407 };
408
409 /* dcs_parameter state definition. */
410 static const struct input_state input_state_dcs_parameter = {
411 "dcs_parameter",
412 NULL, NULL,
413 input_state_dcs_parameter_table
414 };
415
416 /* dcs_intermediate state definition. */
417 static const struct input_state input_state_dcs_intermediate = {
418 "dcs_intermediate",
419 NULL, NULL,
420 input_state_dcs_intermediate_table
421 };
422
423 /* dcs_handler state definition. */
424 static const struct input_state input_state_dcs_handler = {
425 "dcs_handler",
426 NULL, NULL,
427 input_state_dcs_handler_table
428 };
429
430 /* dcs_escape state definition. */
431 static const struct input_state input_state_dcs_escape = {
432 "dcs_escape",
433 NULL, NULL,
434 input_state_dcs_escape_table
435 };
436
437 /* dcs_ignore state definition. */
438 static const struct input_state input_state_dcs_ignore = {
439 "dcs_ignore",
440 NULL, NULL,
441 input_state_dcs_ignore_table
442 };
443
444 /* osc_string state definition. */
445 static const struct input_state input_state_osc_string = {
446 "osc_string",
447 input_enter_osc, input_exit_osc,
448 input_state_osc_string_table
449 };
450
451 /* apc_string state definition. */
452 static const struct input_state input_state_apc_string = {
453 "apc_string",
454 input_enter_apc, input_exit_apc,
455 input_state_apc_string_table
456 };
457
458 /* rename_string state definition. */
459 static const struct input_state input_state_rename_string = {
460 "rename_string",
461 input_enter_rename, input_exit_rename,
462 input_state_rename_string_table
463 };
464
465 /* consume_st state definition. */
466 static const struct input_state input_state_consume_st = {
467 "consume_st",
468 input_enter_rename, NULL, /* rename also waits for ST */
469 input_state_consume_st_table
470 };
471
472 /* ground state table. */
473 static const struct input_transition input_state_ground_table[] = {
474 INPUT_STATE_ANYWHERE,
475
476 { 0x00, 0x17, input_c0_dispatch, NULL },
477 { 0x19, 0x19, input_c0_dispatch, NULL },
478 { 0x1c, 0x1f, input_c0_dispatch, NULL },
479 { 0x20, 0x7e, input_print, NULL },
480 { 0x7f, 0x7f, NULL, NULL },
481 { 0x80, 0xff, input_top_bit_set, NULL },
482
483 { -1, -1, NULL, NULL }
484 };
485
486 /* esc_enter state table. */
487 static const struct input_transition input_state_esc_enter_table[] = {
488 INPUT_STATE_ANYWHERE,
489
490 { 0x00, 0x17, input_c0_dispatch, NULL },
491 { 0x19, 0x19, input_c0_dispatch, NULL },
492 { 0x1c, 0x1f, input_c0_dispatch, NULL },
493 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
494 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
495 { 0x50, 0x50, NULL, &input_state_dcs_enter },
496 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
497 { 0x58, 0x58, NULL, &input_state_consume_st },
498 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
499 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
500 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
501 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
502 { 0x5d, 0x5d, NULL, &input_state_osc_string },
503 { 0x5e, 0x5e, NULL, &input_state_consume_st },
504 { 0x5f, 0x5f, NULL, &input_state_apc_string },
505 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
506 { 0x6b, 0x6b, NULL, &input_state_rename_string },
507 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
508 { 0x7f, 0xff, NULL, NULL },
509
510 { -1, -1, NULL, NULL }
511 };
512
513 /* esc_intermediate state table. */
514 static const struct input_transition input_state_esc_intermediate_table[] = {
515 INPUT_STATE_ANYWHERE,
516
517 { 0x00, 0x17, input_c0_dispatch, NULL },
518 { 0x19, 0x19, input_c0_dispatch, NULL },
519 { 0x1c, 0x1f, input_c0_dispatch, NULL },
520 { 0x20, 0x2f, input_intermediate, NULL },
521 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
522 { 0x7f, 0xff, NULL, NULL },
523
524 { -1, -1, NULL, NULL }
525 };
526
527 /* csi_enter state table. */
528 static const struct input_transition input_state_csi_enter_table[] = {
529 INPUT_STATE_ANYWHERE,
530
531 { 0x00, 0x17, input_c0_dispatch, NULL },
532 { 0x19, 0x19, input_c0_dispatch, NULL },
533 { 0x1c, 0x1f, input_c0_dispatch, NULL },
534 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
535 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
536 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
537 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
538 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
539 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
540 { 0x7f, 0xff, NULL, NULL },
541
542 { -1, -1, NULL, NULL }
543 };
544
545 /* csi_parameter state table. */
546 static const struct input_transition input_state_csi_parameter_table[] = {
547 INPUT_STATE_ANYWHERE,
548
549 { 0x00, 0x17, input_c0_dispatch, NULL },
550 { 0x19, 0x19, input_c0_dispatch, NULL },
551 { 0x1c, 0x1f, input_c0_dispatch, NULL },
552 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
553 { 0x30, 0x39, input_parameter, NULL },
554 { 0x3a, 0x3a, input_parameter, NULL },
555 { 0x3b, 0x3b, input_parameter, NULL },
556 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
557 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
558 { 0x7f, 0xff, NULL, NULL },
559
560 { -1, -1, NULL, NULL }
561 };
562
563 /* csi_intermediate state table. */
564 static const struct input_transition input_state_csi_intermediate_table[] = {
565 INPUT_STATE_ANYWHERE,
566
567 { 0x00, 0x17, input_c0_dispatch, NULL },
568 { 0x19, 0x19, input_c0_dispatch, NULL },
569 { 0x1c, 0x1f, input_c0_dispatch, NULL },
570 { 0x20, 0x2f, input_intermediate, NULL },
571 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
572 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
573 { 0x7f, 0xff, NULL, NULL },
574
575 { -1, -1, NULL, NULL }
576 };
577
578 /* csi_ignore state table. */
579 static const struct input_transition input_state_csi_ignore_table[] = {
580 INPUT_STATE_ANYWHERE,
581
582 { 0x00, 0x17, input_c0_dispatch, NULL },
583 { 0x19, 0x19, input_c0_dispatch, NULL },
584 { 0x1c, 0x1f, input_c0_dispatch, NULL },
585 { 0x20, 0x3f, NULL, NULL },
586 { 0x40, 0x7e, NULL, &input_state_ground },
587 { 0x7f, 0xff, NULL, NULL },
588
589 { -1, -1, NULL, NULL }
590 };
591
592 /* dcs_enter state table. */
593 static const struct input_transition input_state_dcs_enter_table[] = {
594 INPUT_STATE_ANYWHERE,
595
596 { 0x00, 0x17, NULL, NULL },
597 { 0x19, 0x19, NULL, NULL },
598 { 0x1c, 0x1f, NULL, NULL },
599 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
600 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
601 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
602 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
603 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
604 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
605 { 0x7f, 0xff, NULL, NULL },
606
607 { -1, -1, NULL, NULL }
608 };
609
610 /* dcs_parameter state table. */
611 static const struct input_transition input_state_dcs_parameter_table[] = {
612 INPUT_STATE_ANYWHERE,
613
614 { 0x00, 0x17, NULL, NULL },
615 { 0x19, 0x19, NULL, NULL },
616 { 0x1c, 0x1f, NULL, NULL },
617 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
618 { 0x30, 0x39, input_parameter, NULL },
619 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
620 { 0x3b, 0x3b, input_parameter, NULL },
621 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
622 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
623 { 0x7f, 0xff, NULL, NULL },
624
625 { -1, -1, NULL, NULL }
626 };
627
628 /* dcs_intermediate state table. */
629 static const struct input_transition input_state_dcs_intermediate_table[] = {
630 INPUT_STATE_ANYWHERE,
631
632 { 0x00, 0x17, NULL, NULL },
633 { 0x19, 0x19, NULL, NULL },
634 { 0x1c, 0x1f, NULL, NULL },
635 { 0x20, 0x2f, input_intermediate, NULL },
636 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
637 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
638 { 0x7f, 0xff, NULL, NULL },
639
640 { -1, -1, NULL, NULL }
641 };
642
643 /* dcs_handler state table. */
644 static const struct input_transition input_state_dcs_handler_table[] = {
645 /* No INPUT_STATE_ANYWHERE */
646
647 { 0x00, 0x1a, input_input, NULL },
648 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
649 { 0x1c, 0xff, input_input, NULL },
650
651 { -1, -1, NULL, NULL }
652 };
653
654 /* dcs_escape state table. */
655 static const struct input_transition input_state_dcs_escape_table[] = {
656 /* No INPUT_STATE_ANYWHERE */
657
658 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
659 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
660 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
661
662 { -1, -1, NULL, NULL }
663 };
664
665 /* dcs_ignore state table. */
666 static const struct input_transition input_state_dcs_ignore_table[] = {
667 INPUT_STATE_ANYWHERE,
668
669 { 0x00, 0x17, NULL, NULL },
670 { 0x19, 0x19, NULL, NULL },
671 { 0x1c, 0x1f, NULL, NULL },
672 { 0x20, 0xff, NULL, NULL },
673
674 { -1, -1, NULL, NULL }
675 };
676
677 /* osc_string state table. */
678 static const struct input_transition input_state_osc_string_table[] = {
679 INPUT_STATE_ANYWHERE,
680
681 { 0x00, 0x06, NULL, NULL },
682 { 0x07, 0x07, input_end_bel, &input_state_ground },
683 { 0x08, 0x17, NULL, NULL },
684 { 0x19, 0x19, NULL, NULL },
685 { 0x1c, 0x1f, NULL, NULL },
686 { 0x20, 0xff, input_input, NULL },
687
688 { -1, -1, NULL, NULL }
689 };
690
691 /* apc_string state table. */
692 static const struct input_transition input_state_apc_string_table[] = {
693 INPUT_STATE_ANYWHERE,
694
695 { 0x00, 0x17, NULL, NULL },
696 { 0x19, 0x19, NULL, NULL },
697 { 0x1c, 0x1f, NULL, NULL },
698 { 0x20, 0xff, input_input, NULL },
699
700 { -1, -1, NULL, NULL }
701 };
702
703 /* rename_string state table. */
704 static const struct input_transition input_state_rename_string_table[] = {
705 INPUT_STATE_ANYWHERE,
706
707 { 0x00, 0x17, NULL, NULL },
708 { 0x19, 0x19, NULL, NULL },
709 { 0x1c, 0x1f, NULL, NULL },
710 { 0x20, 0xff, input_input, NULL },
711
712 { -1, -1, NULL, NULL }
713 };
714
715 /* consume_st state table. */
716 static const struct input_transition input_state_consume_st_table[] = {
717 INPUT_STATE_ANYWHERE,
718
719 { 0x00, 0x17, NULL, NULL },
720 { 0x19, 0x19, NULL, NULL },
721 { 0x1c, 0x1f, NULL, NULL },
722 { 0x20, 0xff, NULL, NULL },
723
724 { -1, -1, NULL, NULL }
725 };
726
727 /* Input table compare. */
728 static int
729 input_table_compare(const void *key, const void *value)
730 {
731 const struct input_ctx *ictx = key;
732 const struct input_table_entry *entry = value;
733
734 if (ictx->ch != entry->ch)
735 return (ictx->ch - entry->ch);
736 return (strcmp(ictx->interm_buf, entry->interm));
737 }
738
739 /*
740 * Timer - if this expires then have been waiting for a terminator for too
741 * long, so reset to ground.
742 */
743 static void
744 input_timer_callback(__unused int fd, __unused short events, void *arg)
745 {
746 struct input_ctx *ictx = arg;
747
748 log_debug("%s: %s expired" , __func__, ictx->state->name);
749 input_reset(ictx, 0);
750 }
751
752 /* Start the timer. */
753 static void
754 input_start_timer(struct input_ctx *ictx)
755 {
756 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
757
758 event_del(&ictx->timer);
759 event_add(&ictx->timer, &tv);
760 }
761
762 /* Reset cell state to default. */
763 static void
764 input_reset_cell(struct input_ctx *ictx)
765 {
766 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
767 ictx->cell.set = 0;
768 ictx->cell.g0set = ictx->cell.g1set = 0;
769
770 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
771 ictx->old_cx = 0;
772 ictx->old_cy = 0;
773 }
774
775 /* Save screen state. */
776 static void
777 input_save_state(struct input_ctx *ictx)
778 {
779 struct screen_write_ctx *sctx = &ictx->ctx;
780 struct screen *s = sctx->s;
781
782 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
783 ictx->old_cx = s->cx;
784 ictx->old_cy = s->cy;
785 ictx->old_mode = s->mode;
786 }
787
788 /* Restore screen state. */
789 static void
790 input_restore_state(struct input_ctx *ictx)
791 {
792 struct screen_write_ctx *sctx = &ictx->ctx;
793
794 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
795 if (ictx->old_mode & MODE_ORIGIN)
796 screen_write_mode_set(sctx, MODE_ORIGIN);
797 else
798 screen_write_mode_clear(sctx, MODE_ORIGIN);
799 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
800 }
801
802 /* Initialise input parser. */
803 struct input_ctx *
804 input_init(struct window_pane *wp, struct bufferevent *bev,
805 struct colour_palette *palette)
806 {
807 struct input_ctx *ictx;
808
809 ictx = xcalloc(1, sizeof *ictx);
810 ictx->wp = wp;
811 ictx->event = bev;
812 ictx->palette = palette;
813
814 ictx->input_space = INPUT_BUF_START;
815 ictx->input_buf = xmalloc(INPUT_BUF_START);
816
817 ictx->since_ground = evbuffer_new();
818 if (ictx->since_ground == NULL)
819 fatalx("out of memory");
820
821 evtimer_set(&ictx->timer, input_timer_callback, ictx);
822
823 input_reset(ictx, 0);
824 return (ictx);
825 }
826
827 /* Destroy input parser. */
828 void
829 input_free(struct input_ctx *ictx)
830 {
831 u_int i;
832
833 for (i = 0; i < ictx->param_list_len; i++) {
834 if (ictx->param_list[i].type == INPUT_STRING)
835 free(ictx->param_list[i].str);
836 }
837
838 event_del(&ictx->timer);
839
840 free(ictx->input_buf);
841 evbuffer_free(ictx->since_ground);
842
843 free(ictx);
844 }
845
846 /* Reset input state and clear screen. */
847 void
848 input_reset(struct input_ctx *ictx, int clear)
849 {
850 struct screen_write_ctx *sctx = &ictx->ctx;
851 struct window_pane *wp = ictx->wp;
852
853 input_reset_cell(ictx);
854
855 if (clear && wp != NULL) {
856 if (TAILQ_EMPTY(&wp->modes))
857 screen_write_start_pane(sctx, wp, &wp->base);
858 else
859 screen_write_start(sctx, &wp->base);
860 screen_write_reset(sctx);
861 screen_write_stop(sctx);
862 }
863
864 input_clear(ictx);
865
866 ictx->last = -1;
867
868 ictx->state = &input_state_ground;
869 ictx->flags = 0;
870 }
871
872 /* Return pending data. */
873 struct evbuffer *
874 input_pending(struct input_ctx *ictx)
875 {
876 return (ictx->since_ground);
877 }
878
879 /* Change input state. */
880 static void
881 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
882 {
883 if (ictx->state->exit != NULL)
884 ictx->state->exit(ictx);
885 ictx->state = itr->state;
886 if (ictx->state->enter != NULL)
887 ictx->state->enter(ictx);
888 }
889
890 /* Parse data. */
891 static void
892 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
893 {
894 struct screen_write_ctx *sctx = &ictx->ctx;
895 const struct input_state *state = NULL;
896 const struct input_transition *itr = NULL;
897 size_t off = 0;
898
899 /* Parse the input. */
900 while (off < len) {
901 ictx->ch = buf[off++];
902
903 /* Find the transition. */
904 if (ictx->state != state ||
905 itr == NULL ||
906 ictx->ch < itr->first ||
907 ictx->ch > itr->last) {
908 itr = ictx->state->transitions;
909 while (itr->first != -1 && itr->last != -1) {
910 if (ictx->ch >= itr->first &&
911 ictx->ch <= itr->last)
912 break;
913 itr++;
914 }
915 if (itr->first == -1 || itr->last == -1) {
916 /* No transition? Eh? */
917 fatalx("no transition from state");
918 }
919 }
920 state = ictx->state;
921
922 /*
923 * Any state except print stops the current collection. This is
924 * an optimization to avoid checking if the attributes have
925 * changed for every character. It will stop unnecessarily for
926 * sequences that don't make a terminal change, but they should
927 * be the minority.
928 */
929 if (itr->handler != input_print)
930 screen_write_collect_end(sctx);
931
932 /*
933 * Execute the handler, if any. Don't switch state if it
934 * returns non-zero.
935 */
936 if (itr->handler != NULL && itr->handler(ictx) != 0)
937 continue;
938
939 /* And switch state, if necessary. */
940 if (itr->state != NULL)
941 input_set_state(ictx, itr);
942
943 /* If not in ground state, save input. */
944 if (ictx->state != &input_state_ground)
945 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
946 }
947 }
948
949 /* Parse input from pane. */
950 void
951 input_parse_pane(struct window_pane *wp)
952 {
953 void *new_data;
954 size_t new_size;
955
956 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
957 input_parse_buffer(wp, new_data, new_size);
958 window_pane_update_used_data(wp, &wp->offset, new_size);
959 }
960
961 /* Parse given input. */
962 void
963 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
964 {
965 struct input_ctx *ictx = wp->ictx;
966 struct screen_write_ctx *sctx = &ictx->ctx;
967
968 if (len == 0)
969 return;
970
971 window_update_activity(wp->window);
972 wp->flags |= PANE_CHANGED;
973
974 /* Flag new input while in a mode. */
975 if (!TAILQ_EMPTY(&wp->modes))
976 wp->flags |= PANE_UNSEENCHANGES;
977
978 /* NULL wp if there is a mode set as don't want to update the tty. */
979 if (TAILQ_EMPTY(&wp->modes))
980 screen_write_start_pane(sctx, wp, &wp->base);
981 else
982 screen_write_start(sctx, &wp->base);
983
984 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
985 ictx->state->name, len, (int)len, buf);
986
987 input_parse(ictx, buf, len);
988 screen_write_stop(sctx);
989 }
990
991 /* Parse given input for screen. */
992 void
993 input_parse_screen(struct input_ctx *ictx, struct screen *s,
994 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
995 {
996 struct screen_write_ctx *sctx = &ictx->ctx;
997
998 if (len == 0)
999 return;
1000
1001 screen_write_start_callback(sctx, s, cb, arg);
1002 input_parse(ictx, buf, len);
1003 screen_write_stop(sctx);
1004 }
1005
1006 /* Split the parameter list (if any). */
1007 static int
1008 input_split(struct input_ctx *ictx)
1009 {
1010 const char *errstr;
1011 char *ptr, *out;
1012 struct input_param *ip;
1013 u_int i;
1014
1015 for (i = 0; i < ictx->param_list_len; i++) {
1016 if (ictx->param_list[i].type == INPUT_STRING)
1017 free(ictx->param_list[i].str);
1018 }
1019 ictx->param_list_len = 0;
1020
1021 if (ictx->param_len == 0)
1022 return (0);
1023 ip = &ictx->param_list[0];
1024
1025 ptr = ictx->param_buf;
1026 while ((out = strsep(&ptr, ";")) != NULL) {
1027 if (*out == '\0')
1028 ip->type = INPUT_MISSING;
1029 else {
1030 if (strchr(out, ':') != NULL) {
1031 ip->type = INPUT_STRING;
1032 ip->str = xstrdup(out);
1033 } else {
1034 ip->type = INPUT_NUMBER;
1035 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1036 if (errstr != NULL)
1037 return (-1);
1038 }
1039 }
1040 ip = &ictx->param_list[++ictx->param_list_len];
1041 if (ictx->param_list_len == nitems(ictx->param_list))
1042 return (-1);
1043 }
1044
1045 for (i = 0; i < ictx->param_list_len; i++) {
1046 ip = &ictx->param_list[i];
1047 if (ip->type == INPUT_MISSING)
1048 log_debug("parameter %u: missing", i);
1049 else if (ip->type == INPUT_STRING)
1050 log_debug("parameter %u: string %s", i, ip->str);
1051 else if (ip->type == INPUT_NUMBER)
1052 log_debug("parameter %u: number %d", i, ip->num);
1053 }
1054
1055 return (0);
1056 }
1057
1058 /* Get an argument or return default value. */
1059 static int
1060 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1061 {
1062 struct input_param *ip;
1063 int retval;
1064
1065 if (validx >= ictx->param_list_len)
1066 return (defval);
1067 ip = &ictx->param_list[validx];
1068 if (ip->type == INPUT_MISSING)
1069 return (defval);
1070 if (ip->type == INPUT_STRING)
1071 return (-1);
1072 retval = ip->num;
1073 if (retval < minval)
1074 return (minval);
1075 return (retval);
1076 }
1077
1078 /* Reply to terminal query. */
1079 static void
1080 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1081 {
1082 struct bufferevent *bev = ictx->event;
1083 va_list ap;
1084 char *reply;
1085
1086 if (bev == NULL)
1087 return;
1088
1089 va_start(ap, fmt);
1090 xvasprintf(&reply, fmt, ap);
1091 va_end(ap);
1092
1093 log_debug("%s: %s", __func__, reply);
1094 bufferevent_write(bev, reply, strlen(reply));
1095 free(reply);
1096 }
1097
1098 /* Clear saved state. */
1099 static void
1100 input_clear(struct input_ctx *ictx)
1101 {
1102 event_del(&ictx->timer);
1103
1104 *ictx->interm_buf = '\0';
1105 ictx->interm_len = 0;
1106
1107 *ictx->param_buf = '\0';
1108 ictx->param_len = 0;
1109
1110 *ictx->input_buf = '\0';
1111 ictx->input_len = 0;
1112
1113 ictx->input_end = INPUT_END_ST;
1114
1115 ictx->flags &= ~INPUT_DISCARD;
1116 }
1117
1118 /* Reset for ground state. */
1119 static void
1120 input_ground(struct input_ctx *ictx)
1121 {
1122 event_del(&ictx->timer);
1123 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1124
1125 if (ictx->input_space > INPUT_BUF_START) {
1126 ictx->input_space = INPUT_BUF_START;
1127 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1128 }
1129 }
1130
1131 /* Output this character to the screen. */
1132 static int
1133 input_print(struct input_ctx *ictx)
1134 {
1135 struct screen_write_ctx *sctx = &ictx->ctx;
1136 int set;
1137
1138 ictx->utf8started = 0; /* can't be valid UTF-8 */
1139
1140 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1141 if (set == 1)
1142 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1143 else
1144 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1145
1146 utf8_set(&ictx->cell.cell.data, ictx->ch);
1147 screen_write_collect_add(sctx, &ictx->cell.cell);
1148 ictx->last = ictx->ch;
1149
1150 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1151
1152 return (0);
1153 }
1154
1155 /* Collect intermediate string. */
1156 static int
1157 input_intermediate(struct input_ctx *ictx)
1158 {
1159 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1160 ictx->flags |= INPUT_DISCARD;
1161 else {
1162 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1163 ictx->interm_buf[ictx->interm_len] = '\0';
1164 }
1165
1166 return (0);
1167 }
1168
1169 /* Collect parameter string. */
1170 static int
1171 input_parameter(struct input_ctx *ictx)
1172 {
1173 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1174 ictx->flags |= INPUT_DISCARD;
1175 else {
1176 ictx->param_buf[ictx->param_len++] = ictx->ch;
1177 ictx->param_buf[ictx->param_len] = '\0';
1178 }
1179
1180 return (0);
1181 }
1182
1183 /* Collect input string. */
1184 static int
1185 input_input(struct input_ctx *ictx)
1186 {
1187 size_t available;
1188
1189 available = ictx->input_space;
1190 while (ictx->input_len + 1 >= available) {
1191 available *= 2;
1192 if (available > INPUT_BUF_LIMIT) {
1193 ictx->flags |= INPUT_DISCARD;
1194 return (0);
1195 }
1196 ictx->input_buf = xrealloc(ictx->input_buf, available);
1197 ictx->input_space = available;
1198 }
1199 ictx->input_buf[ictx->input_len++] = ictx->ch;
1200 ictx->input_buf[ictx->input_len] = '\0';
1201
1202 return (0);
1203 }
1204
1205 /* Execute C0 control sequence. */
1206 static int
1207 input_c0_dispatch(struct input_ctx *ictx)
1208 {
1209 struct screen_write_ctx *sctx = &ictx->ctx;
1210 struct window_pane *wp = ictx->wp;
1211 struct screen *s = sctx->s;
1212
1213 ictx->utf8started = 0; /* can't be valid UTF-8 */
1214
1215 log_debug("%s: '%c'", __func__, ictx->ch);
1216
1217 switch (ictx->ch) {
1218 case '\000': /* NUL */
1219 break;
1220 case '\007': /* BEL */
1221 if (wp != NULL)
1222 alerts_queue(wp->window, WINDOW_BELL);
1223 break;
1224 case '\010': /* BS */
1225 screen_write_backspace(sctx);
1226 break;
1227 case '\011': /* HT */
1228 /* Don't tab beyond the end of the line. */
1229 if (s->cx >= screen_size_x(s) - 1)
1230 break;
1231
1232 /* Find the next tab point, or use the last column if none. */
1233 do {
1234 s->cx++;
1235 if (bit_test(s->tabs, s->cx))
1236 break;
1237 } while (s->cx < screen_size_x(s) - 1);
1238 break;
1239 case '\012': /* LF */
1240 case '\013': /* VT */
1241 case '\014': /* FF */
1242 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1243 if (s->mode & MODE_CRLF)
1244 screen_write_carriagereturn(sctx);
1245 break;
1246 case '\015': /* CR */
1247 screen_write_carriagereturn(sctx);
1248 break;
1249 case '\016': /* SO */
1250 ictx->cell.set = 1;
1251 break;
1252 case '\017': /* SI */
1253 ictx->cell.set = 0;
1254 break;
1255 default:
1256 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1257 break;
1258 }
1259
1260 ictx->last = -1;
1261 return (0);
1262 }
1263
1264 /* Execute escape sequence. */
1265 static int
1266 input_esc_dispatch(struct input_ctx *ictx)
1267 {
1268 struct screen_write_ctx *sctx = &ictx->ctx;
1269 struct screen *s = sctx->s;
1270 struct input_table_entry *entry;
1271
1272 if (ictx->flags & INPUT_DISCARD)
1273 return (0);
1274 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1275
1276 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1277 sizeof input_esc_table[0], input_table_compare);
1278 if (entry == NULL) {
1279 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1280 return (0);
1281 }
1282
1283 switch (entry->type) {
1284 case INPUT_ESC_RIS:
1285 colour_palette_clear(ictx->palette);
1286 input_reset_cell(ictx);
1287 screen_write_reset(sctx);
1288 screen_write_fullredraw(sctx);
1289 break;
1290 case INPUT_ESC_IND:
1291 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1292 break;
1293 case INPUT_ESC_NEL:
1294 screen_write_carriagereturn(sctx);
1295 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1296 break;
1297 case INPUT_ESC_HTS:
1298 if (s->cx < screen_size_x(s))
1299 bit_set(s->tabs, s->cx);
1300 break;
1301 case INPUT_ESC_RI:
1302 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1303 break;
1304 case INPUT_ESC_DECKPAM:
1305 screen_write_mode_set(sctx, MODE_KKEYPAD);
1306 break;
1307 case INPUT_ESC_DECKPNM:
1308 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1309 break;
1310 case INPUT_ESC_DECSC:
1311 input_save_state(ictx);
1312 break;
1313 case INPUT_ESC_DECRC:
1314 input_restore_state(ictx);
1315 break;
1316 case INPUT_ESC_DECALN:
1317 screen_write_alignmenttest(sctx);
1318 break;
1319 case INPUT_ESC_SCSG0_ON:
1320 ictx->cell.g0set = 1;
1321 break;
1322 case INPUT_ESC_SCSG0_OFF:
1323 ictx->cell.g0set = 0;
1324 break;
1325 case INPUT_ESC_SCSG1_ON:
1326 ictx->cell.g1set = 1;
1327 break;
1328 case INPUT_ESC_SCSG1_OFF:
1329 ictx->cell.g1set = 0;
1330 break;
1331 case INPUT_ESC_ST:
1332 /* ST terminates OSC but the state transition already did it. */
1333 break;
1334 }
1335
1336 ictx->last = -1;
1337 return (0);
1338 }
1339
1340 /* Execute control sequence. */
1341 static int
1342 input_csi_dispatch(struct input_ctx *ictx)
1343 {
1344 struct screen_write_ctx *sctx = &ictx->ctx;
1345 struct screen *s = sctx->s;
1346 struct input_table_entry *entry;
1347 int i, n, m;
1348 u_int cx, bg = ictx->cell.cell.bg;
1349
1350 if (ictx->flags & INPUT_DISCARD)
1351 return (0);
1352
1353 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
1354 ictx->interm_buf, ictx->param_buf);
1355
1356 if (input_split(ictx) != 0)
1357 return (0);
1358
1359 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1360 sizeof input_csi_table[0], input_table_compare);
1361 if (entry == NULL) {
1362 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1363 return (0);
1364 }
1365
1366 switch (entry->type) {
1367 case INPUT_CSI_CBT:
1368 /* Find the previous tab point, n times. */
1369 cx = s->cx;
1370 if (cx > screen_size_x(s) - 1)
1371 cx = screen_size_x(s) - 1;
1372 n = input_get(ictx, 0, 1, 1);
1373 if (n == -1)
1374 break;
1375 while (cx > 0 && n-- > 0) {
1376 do
1377 cx--;
1378 while (cx > 0 && !bit_test(s->tabs, cx));
1379 }
1380 s->cx = cx;
1381 break;
1382 case INPUT_CSI_CUB:
1383 n = input_get(ictx, 0, 1, 1);
1384 if (n != -1)
1385 screen_write_cursorleft(sctx, n);
1386 break;
1387 case INPUT_CSI_CUD:
1388 n = input_get(ictx, 0, 1, 1);
1389 if (n != -1)
1390 screen_write_cursordown(sctx, n);
1391 break;
1392 case INPUT_CSI_CUF:
1393 n = input_get(ictx, 0, 1, 1);
1394 if (n != -1)
1395 screen_write_cursorright(sctx, n);
1396 break;
1397 case INPUT_CSI_CUP:
1398 n = input_get(ictx, 0, 1, 1);
1399 m = input_get(ictx, 1, 1, 1);
1400 if (n != -1 && m != -1)
1401 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1402 break;
1403 case INPUT_CSI_MODSET:
1404 n = input_get(ictx, 0, 0, 0);
1405 m = input_get(ictx, 1, 0, 0);
1406 if (options_get_number(global_options, "extended-keys") == 2)
1407 break;
1408 if (n == 0 || (n == 4 && m == 0))
1409 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1410 else if (n == 4 && (m == 1 || m == 2))
1411 screen_write_mode_set(sctx, MODE_KEXTENDED);
1412 break;
1413 case INPUT_CSI_MODOFF:
1414 n = input_get(ictx, 0, 0, 0);
1415 if (n == 4)
1416 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1417 break;
1418 case INPUT_CSI_WINOPS:
1419 input_csi_dispatch_winops(ictx);
1420 break;
1421 case INPUT_CSI_CUU:
1422 n = input_get(ictx, 0, 1, 1);
1423 if (n != -1)
1424 screen_write_cursorup(sctx, n);
1425 break;
1426 case INPUT_CSI_CNL:
1427 n = input_get(ictx, 0, 1, 1);
1428 if (n != -1) {
1429 screen_write_carriagereturn(sctx);
1430 screen_write_cursordown(sctx, n);
1431 }
1432 break;
1433 case INPUT_CSI_CPL:
1434 n = input_get(ictx, 0, 1, 1);
1435 if (n != -1) {
1436 screen_write_carriagereturn(sctx);
1437 screen_write_cursorup(sctx, n);
1438 }
1439 break;
1440 case INPUT_CSI_DA:
1441 switch (input_get(ictx, 0, 0, 0)) {
1442 case -1:
1443 break;
1444 case 0:
1445 input_reply(ictx, "\033[?1;2c");
1446 break;
1447 default:
1448 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1449 break;
1450 }
1451 break;
1452 case INPUT_CSI_DA_TWO:
1453 switch (input_get(ictx, 0, 0, 0)) {
1454 case -1:
1455 break;
1456 case 0:
1457 input_reply(ictx, "\033[>84;0;0c");
1458 break;
1459 default:
1460 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1461 break;
1462 }
1463 break;
1464 case INPUT_CSI_ECH:
1465 n = input_get(ictx, 0, 1, 1);
1466 if (n != -1)
1467 screen_write_clearcharacter(sctx, n, bg);
1468 break;
1469 case INPUT_CSI_DCH:
1470 n = input_get(ictx, 0, 1, 1);
1471 if (n != -1)
1472 screen_write_deletecharacter(sctx, n, bg);
1473 break;
1474 case INPUT_CSI_DECSTBM:
1475 n = input_get(ictx, 0, 1, 1);
1476 m = input_get(ictx, 1, 1, screen_size_y(s));
1477 if (n != -1 && m != -1)
1478 screen_write_scrollregion(sctx, n - 1, m - 1);
1479 break;
1480 case INPUT_CSI_DL:
1481 n = input_get(ictx, 0, 1, 1);
1482 if (n != -1)
1483 screen_write_deleteline(sctx, n, bg);
1484 break;
1485 case INPUT_CSI_DSR:
1486 switch (input_get(ictx, 0, 0, 0)) {
1487 case -1:
1488 break;
1489 case 5:
1490 input_reply(ictx, "\033[0n");
1491 break;
1492 case 6:
1493 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1494 break;
1495 default:
1496 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1497 break;
1498 }
1499 break;
1500 case INPUT_CSI_ED:
1501 switch (input_get(ictx, 0, 0, 0)) {
1502 case -1:
1503 break;
1504 case 0:
1505 screen_write_clearendofscreen(sctx, bg);
1506 break;
1507 case 1:
1508 screen_write_clearstartofscreen(sctx, bg);
1509 break;
1510 case 2:
1511 screen_write_clearscreen(sctx, bg);
1512 break;
1513 case 3:
1514 if (input_get(ictx, 1, 0, 0) == 0) {
1515 /*
1516 * Linux console extension to clear history
1517 * (for example before locking the screen).
1518 */
1519 screen_write_clearhistory(sctx);
1520 }
1521 break;
1522 default:
1523 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1524 break;
1525 }
1526 break;
1527 case INPUT_CSI_EL:
1528 switch (input_get(ictx, 0, 0, 0)) {
1529 case -1:
1530 break;
1531 case 0:
1532 screen_write_clearendofline(sctx, bg);
1533 break;
1534 case 1:
1535 screen_write_clearstartofline(sctx, bg);
1536 break;
1537 case 2:
1538 screen_write_clearline(sctx, bg);
1539 break;
1540 default:
1541 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1542 break;
1543 }
1544 break;
1545 case INPUT_CSI_HPA:
1546 n = input_get(ictx, 0, 1, 1);
1547 if (n != -1)
1548 screen_write_cursormove(sctx, n - 1, -1, 1);
1549 break;
1550 case INPUT_CSI_ICH:
1551 n = input_get(ictx, 0, 1, 1);
1552 if (n != -1)
1553 screen_write_insertcharacter(sctx, n, bg);
1554 break;
1555 case INPUT_CSI_IL:
1556 n = input_get(ictx, 0, 1, 1);
1557 if (n != -1)
1558 screen_write_insertline(sctx, n, bg);
1559 break;
1560 case INPUT_CSI_REP:
1561 n = input_get(ictx, 0, 1, 1);
1562 if (n == -1)
1563 break;
1564
1565 m = screen_size_x(s) - s->cx;
1566 if (n > m)
1567 n = m;
1568
1569 if (ictx->last == -1)
1570 break;
1571 ictx->ch = ictx->last;
1572
1573 for (i = 0; i < n; i++)
1574 input_print(ictx);
1575 break;
1576 case INPUT_CSI_RCP:
1577 input_restore_state(ictx);
1578 break;
1579 case INPUT_CSI_RM:
1580 input_csi_dispatch_rm(ictx);
1581 break;
1582 case INPUT_CSI_RM_PRIVATE:
1583 input_csi_dispatch_rm_private(ictx);
1584 break;
1585 case INPUT_CSI_SCP:
1586 input_save_state(ictx);
1587 break;
1588 case INPUT_CSI_SGR:
1589 input_csi_dispatch_sgr(ictx);
1590 break;
1591 case INPUT_CSI_SM:
1592 input_csi_dispatch_sm(ictx);
1593 break;
1594 case INPUT_CSI_SM_PRIVATE:
1595 input_csi_dispatch_sm_private(ictx);
1596 break;
1597 case INPUT_CSI_SU:
1598 n = input_get(ictx, 0, 1, 1);
1599 if (n != -1)
1600 screen_write_scrollup(sctx, n, bg);
1601 break;
1602 case INPUT_CSI_SD:
1603 n = input_get(ictx, 0, 1, 1);
1604 if (n != -1)
1605 screen_write_scrolldown(sctx, n, bg);
1606 break;
1607 case INPUT_CSI_TBC:
1608 switch (input_get(ictx, 0, 0, 0)) {
1609 case -1:
1610 break;
1611 case 0:
1612 if (s->cx < screen_size_x(s))
1613 bit_clear(s->tabs, s->cx);
1614 break;
1615 case 3:
1616 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1617 break;
1618 default:
1619 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1620 break;
1621 }
1622 break;
1623 case INPUT_CSI_VPA:
1624 n = input_get(ictx, 0, 1, 1);
1625 if (n != -1)
1626 screen_write_cursormove(sctx, -1, n - 1, 1);
1627 break;
1628 case INPUT_CSI_DECSCUSR:
1629 n = input_get(ictx, 0, 0, 0);
1630 if (n != -1)
1631 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1632 break;
1633 case INPUT_CSI_XDA:
1634 n = input_get(ictx, 0, 0, 0);
1635 if (n == 0)
1636 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1637 break;
1638
1639 }
1640
1641 ictx->last = -1;
1642 return (0);
1643 }
1644
1645 /* Handle CSI RM. */
1646 static void
1647 input_csi_dispatch_rm(struct input_ctx *ictx)
1648 {
1649 struct screen_write_ctx *sctx = &ictx->ctx;
1650 u_int i;
1651
1652 for (i = 0; i < ictx->param_list_len; i++) {
1653 switch (input_get(ictx, i, 0, -1)) {
1654 case -1:
1655 break;
1656 case 4: /* IRM */
1657 screen_write_mode_clear(sctx, MODE_INSERT);
1658 break;
1659 case 34:
1660 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1661 break;
1662 default:
1663 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1664 break;
1665 }
1666 }
1667 }
1668
1669 /* Handle CSI private RM. */
1670 static void
1671 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1672 {
1673 struct screen_write_ctx *sctx = &ictx->ctx;
1674 struct grid_cell *gc = &ictx->cell.cell;
1675 u_int i;
1676
1677 for (i = 0; i < ictx->param_list_len; i++) {
1678 switch (input_get(ictx, i, 0, -1)) {
1679 case -1:
1680 break;
1681 case 1: /* DECCKM */
1682 screen_write_mode_clear(sctx, MODE_KCURSOR);
1683 break;
1684 case 3: /* DECCOLM */
1685 screen_write_cursormove(sctx, 0, 0, 1);
1686 screen_write_clearscreen(sctx, gc->bg);
1687 break;
1688 case 6: /* DECOM */
1689 screen_write_mode_clear(sctx, MODE_ORIGIN);
1690 screen_write_cursormove(sctx, 0, 0, 1);
1691 break;
1692 case 7: /* DECAWM */
1693 screen_write_mode_clear(sctx, MODE_WRAP);
1694 break;
1695 case 12:
1696 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1697 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1698 break;
1699 case 25: /* TCEM */
1700 screen_write_mode_clear(sctx, MODE_CURSOR);
1701 break;
1702 case 1000:
1703 case 1001:
1704 case 1002:
1705 case 1003:
1706 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1707 break;
1708 case 1004:
1709 screen_write_mode_clear(sctx, MODE_FOCUSON);
1710 break;
1711 case 1005:
1712 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1713 break;
1714 case 1006:
1715 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1716 break;
1717 case 47:
1718 case 1047:
1719 screen_write_alternateoff(sctx, gc, 0);
1720 break;
1721 case 1049:
1722 screen_write_alternateoff(sctx, gc, 1);
1723 break;
1724 case 2004:
1725 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1726 break;
1727 default:
1728 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1729 break;
1730 }
1731 }
1732 }
1733
1734 /* Handle CSI SM. */
1735 static void
1736 input_csi_dispatch_sm(struct input_ctx *ictx)
1737 {
1738 struct screen_write_ctx *sctx = &ictx->ctx;
1739 u_int i;
1740
1741 for (i = 0; i < ictx->param_list_len; i++) {
1742 switch (input_get(ictx, i, 0, -1)) {
1743 case -1:
1744 break;
1745 case 4: /* IRM */
1746 screen_write_mode_set(sctx, MODE_INSERT);
1747 break;
1748 case 34:
1749 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1750 break;
1751 default:
1752 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1753 break;
1754 }
1755 }
1756 }
1757
1758 /* Handle CSI private SM. */
1759 static void
1760 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1761 {
1762 struct screen_write_ctx *sctx = &ictx->ctx;
1763 struct grid_cell *gc = &ictx->cell.cell;
1764 u_int i;
1765
1766 for (i = 0; i < ictx->param_list_len; i++) {
1767 switch (input_get(ictx, i, 0, -1)) {
1768 case -1:
1769 break;
1770 case 1: /* DECCKM */
1771 screen_write_mode_set(sctx, MODE_KCURSOR);
1772 break;
1773 case 3: /* DECCOLM */
1774 screen_write_cursormove(sctx, 0, 0, 1);
1775 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1776 break;
1777 case 6: /* DECOM */
1778 screen_write_mode_set(sctx, MODE_ORIGIN);
1779 screen_write_cursormove(sctx, 0, 0, 1);
1780 break;
1781 case 7: /* DECAWM */
1782 screen_write_mode_set(sctx, MODE_WRAP);
1783 break;
1784 case 12:
1785 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1786 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1787 break;
1788 case 25: /* TCEM */
1789 screen_write_mode_set(sctx, MODE_CURSOR);
1790 break;
1791 case 1000:
1792 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1793 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1794 break;
1795 case 1002:
1796 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1797 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1798 break;
1799 case 1003:
1800 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1801 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1802 break;
1803 case 1004:
1804 screen_write_mode_set(sctx, MODE_FOCUSON);
1805 break;
1806 case 1005:
1807 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1808 break;
1809 case 1006:
1810 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1811 break;
1812 case 47:
1813 case 1047:
1814 screen_write_alternateon(sctx, gc, 0);
1815 break;
1816 case 1049:
1817 screen_write_alternateon(sctx, gc, 1);
1818 break;
1819 case 2004:
1820 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1821 break;
1822 default:
1823 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1824 break;
1825 }
1826 }
1827 }
1828
1829 /* Handle CSI window operations. */
1830 static void
1831 input_csi_dispatch_winops(struct input_ctx *ictx)
1832 {
1833 struct screen_write_ctx *sctx = &ictx->ctx;
1834 struct screen *s = sctx->s;
1835 struct window_pane *wp = ictx->wp;
1836 u_int x = screen_size_x(s), y = screen_size_y(s);
1837 int n, m;
1838
1839 m = 0;
1840 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1841 switch (n) {
1842 case 1:
1843 case 2:
1844 case 5:
1845 case 6:
1846 case 7:
1847 case 11:
1848 case 13:
1849 case 14:
1850 case 19:
1851 case 20:
1852 case 21:
1853 case 24:
1854 break;
1855 case 3:
1856 case 4:
1857 case 8:
1858 m++;
1859 if (input_get(ictx, m, 0, -1) == -1)
1860 return;
1861 /* FALLTHROUGH */
1862 case 9:
1863 case 10:
1864 m++;
1865 if (input_get(ictx, m, 0, -1) == -1)
1866 return;
1867 break;
1868 case 22:
1869 m++;
1870 switch (input_get(ictx, m, 0, -1)) {
1871 case -1:
1872 return;
1873 case 0:
1874 case 2:
1875 screen_push_title(sctx->s);
1876 break;
1877 }
1878 break;
1879 case 23:
1880 m++;
1881 switch (input_get(ictx, m, 0, -1)) {
1882 case -1:
1883 return;
1884 case 0:
1885 case 2:
1886 screen_pop_title(sctx->s);
1887 if (wp == NULL)
1888 break;
1889 notify_pane("pane-title-changed", wp);
1890 server_redraw_window_borders(wp->window);
1891 server_status_window(wp->window);
1892 break;
1893 }
1894 break;
1895 case 18:
1896 input_reply(ictx, "\033[8;%u;%ut", y, x);
1897 break;
1898 default:
1899 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1900 break;
1901 }
1902 m++;
1903 }
1904 }
1905
1906 /* Helper for 256 colour SGR. */
1907 static int
1908 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1909 {
1910 struct grid_cell *gc = &ictx->cell.cell;
1911
1912 if (c == -1 || c > 255) {
1913 if (fgbg == 38)
1914 gc->fg = 8;
1915 else if (fgbg == 48)
1916 gc->bg = 8;
1917 } else {
1918 if (fgbg == 38)
1919 gc->fg = c | COLOUR_FLAG_256;
1920 else if (fgbg == 48)
1921 gc->bg = c | COLOUR_FLAG_256;
1922 else if (fgbg == 58)
1923 gc->us = c | COLOUR_FLAG_256;
1924 }
1925 return (1);
1926 }
1927
1928 /* Handle CSI SGR for 256 colours. */
1929 static void
1930 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1931 {
1932 int c;
1933
1934 c = input_get(ictx, (*i) + 1, 0, -1);
1935 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1936 (*i)++;
1937 }
1938
1939 /* Helper for RGB colour SGR. */
1940 static int
1941 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1942 int b)
1943 {
1944 struct grid_cell *gc = &ictx->cell.cell;
1945
1946 if (r == -1 || r > 255)
1947 return (0);
1948 if (g == -1 || g > 255)
1949 return (0);
1950 if (b == -1 || b > 255)
1951 return (0);
1952
1953 if (fgbg == 38)
1954 gc->fg = colour_join_rgb(r, g, b);
1955 else if (fgbg == 48)
1956 gc->bg = colour_join_rgb(r, g, b);
1957 else if (fgbg == 58)
1958 gc->us = colour_join_rgb(r, g, b);
1959 return (1);
1960 }
1961
1962 /* Handle CSI SGR for RGB colours. */
1963 static void
1964 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
1965 {
1966 int r, g, b;
1967
1968 r = input_get(ictx, (*i) + 1, 0, -1);
1969 g = input_get(ictx, (*i) + 2, 0, -1);
1970 b = input_get(ictx, (*i) + 3, 0, -1);
1971 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
1972 (*i) += 3;
1973 }
1974
1975 /* Handle CSI SGR with a ISO parameter. */
1976 static void
1977 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
1978 {
1979 struct grid_cell *gc = &ictx->cell.cell;
1980 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
1981 int p[8];
1982 u_int n;
1983 const char *errstr;
1984
1985 for (n = 0; n < nitems(p); n++)
1986 p[n] = -1;
1987 n = 0;
1988
1989 ptr = copy = xstrdup(s);
1990 while ((out = strsep(&ptr, ":")) != NULL) {
1991 if (*out != '\0') {
1992 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
1993 if (errstr != NULL || n == nitems(p)) {
1994 free(copy);
1995 return;
1996 }
1997 } else {
1998 n++;
1999 if (n == nitems(p)) {
2000 free(copy);
2001 return;
2002 }
2003 }
2004 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2005 }
2006 free(copy);
2007
2008 if (n == 0)
2009 return;
2010 if (p[0] == 4) {
2011 if (n != 2)
2012 return;
2013 switch (p[1]) {
2014 case 0:
2015 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2016 break;
2017 case 1:
2018 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2019 gc->attr |= GRID_ATTR_UNDERSCORE;
2020 break;
2021 case 2:
2022 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2023 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2024 break;
2025 case 3:
2026 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2027 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2028 break;
2029 case 4:
2030 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2031 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2032 break;
2033 case 5:
2034 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2035 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2036 break;
2037 }
2038 return;
2039 }
2040 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2041 return;
2042 switch (p[1]) {
2043 case 2:
2044 if (n < 3)
2045 break;
2046 if (n == 5)
2047 i = 2;
2048 else
2049 i = 3;
2050 if (n < i + 3)
2051 break;
2052 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2053 p[i + 2]);
2054 break;
2055 case 5:
2056 if (n < 3)
2057 break;
2058 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2059 break;
2060 }
2061 }
2062
2063 /* Handle CSI SGR. */
2064 static void
2065 input_csi_dispatch_sgr(struct input_ctx *ictx)
2066 {
2067 struct grid_cell *gc = &ictx->cell.cell;
2068 u_int i, link;
2069 int n;
2070
2071 if (ictx->param_list_len == 0) {
2072 memcpy(gc, &grid_default_cell, sizeof *gc);
2073 return;
2074 }
2075
2076 for (i = 0; i < ictx->param_list_len; i++) {
2077 if (ictx->param_list[i].type == INPUT_STRING) {
2078 input_csi_dispatch_sgr_colon(ictx, i);
2079 continue;
2080 }
2081 n = input_get(ictx, i, 0, 0);
2082 if (n == -1)
2083 continue;
2084
2085 if (n == 38 || n == 48 || n == 58) {
2086 i++;
2087 switch (input_get(ictx, i, 0, -1)) {
2088 case 2:
2089 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2090 break;
2091 case 5:
2092 input_csi_dispatch_sgr_256(ictx, n, &i);
2093 break;
2094 }
2095 continue;
2096 }
2097
2098 switch (n) {
2099 case 0:
2100 link = gc->link;
2101 memcpy(gc, &grid_default_cell, sizeof *gc);
2102 gc->link = link;
2103 break;
2104 case 1:
2105 gc->attr |= GRID_ATTR_BRIGHT;
2106 break;
2107 case 2:
2108 gc->attr |= GRID_ATTR_DIM;
2109 break;
2110 case 3:
2111 gc->attr |= GRID_ATTR_ITALICS;
2112 break;
2113 case 4:
2114 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2115 gc->attr |= GRID_ATTR_UNDERSCORE;
2116 break;
2117 case 5:
2118 case 6:
2119 gc->attr |= GRID_ATTR_BLINK;
2120 break;
2121 case 7:
2122 gc->attr |= GRID_ATTR_REVERSE;
2123 break;
2124 case 8:
2125 gc->attr |= GRID_ATTR_HIDDEN;
2126 break;
2127 case 9:
2128 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2129 break;
2130 case 21:
2131 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2132 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2133 break;
2134 case 22:
2135 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2136 break;
2137 case 23:
2138 gc->attr &= ~GRID_ATTR_ITALICS;
2139 break;
2140 case 24:
2141 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2142 break;
2143 case 25:
2144 gc->attr &= ~GRID_ATTR_BLINK;
2145 break;
2146 case 27:
2147 gc->attr &= ~GRID_ATTR_REVERSE;
2148 break;
2149 case 28:
2150 gc->attr &= ~GRID_ATTR_HIDDEN;
2151 break;
2152 case 29:
2153 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2154 break;
2155 case 30:
2156 case 31:
2157 case 32:
2158 case 33:
2159 case 34:
2160 case 35:
2161 case 36:
2162 case 37:
2163 gc->fg = n - 30;
2164 break;
2165 case 39:
2166 gc->fg = 8;
2167 break;
2168 case 40:
2169 case 41:
2170 case 42:
2171 case 43:
2172 case 44:
2173 case 45:
2174 case 46:
2175 case 47:
2176 gc->bg = n - 40;
2177 break;
2178 case 49:
2179 gc->bg = 8;
2180 break;
2181 case 53:
2182 gc->attr |= GRID_ATTR_OVERLINE;
2183 break;
2184 case 55:
2185 gc->attr &= ~GRID_ATTR_OVERLINE;
2186 break;
2187 case 59:
2188 gc->us = 0;
2189 break;
2190 case 90:
2191 case 91:
2192 case 92:
2193 case 93:
2194 case 94:
2195 case 95:
2196 case 96:
2197 case 97:
2198 gc->fg = n;
2199 break;
2200 case 100:
2201 case 101:
2202 case 102:
2203 case 103:
2204 case 104:
2205 case 105:
2206 case 106:
2207 case 107:
2208 gc->bg = n - 10;
2209 break;
2210 }
2211 }
2212 }
2213
2214 /* End of input with BEL. */
2215 static int
2216 input_end_bel(struct input_ctx *ictx)
2217 {
2218 log_debug("%s", __func__);
2219
2220 ictx->input_end = INPUT_END_BEL;
2221
2222 return (0);
2223 }
2224
2225 /* DCS string started. */
2226 static void
2227 input_enter_dcs(struct input_ctx *ictx)
2228 {
2229 log_debug("%s", __func__);
2230
2231 input_clear(ictx);
2232 input_start_timer(ictx);
2233 ictx->last = -1;
2234 }
2235
2236 /* DCS terminator (ST) received. */
2237 static int
2238 input_dcs_dispatch(struct input_ctx *ictx)
2239 {
2240 struct window_pane *wp = ictx->wp;
2241 struct screen_write_ctx *sctx = &ictx->ctx;
2242 u_char *buf = ictx->input_buf;
2243 size_t len = ictx->input_len;
2244 const char prefix[] = "tmux;";
2245 const u_int prefixlen = (sizeof prefix) - 1;
2246 long long allow_passthrough = 0;
2247
2248 if (wp == NULL)
2249 return (0);
2250 if (ictx->flags & INPUT_DISCARD)
2251 return (0);
2252 allow_passthrough = options_get_number(wp->options,
2253 "allow-passthrough");
2254 if (!allow_passthrough)
2255 return (0);
2256 log_debug("%s: \"%s\"", __func__, buf);
2257
2258 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2259 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2260 allow_passthrough == 2);
2261 }
2262
2263 return (0);
2264 }
2265
2266 /* OSC string started. */
2267 static void
2268 input_enter_osc(struct input_ctx *ictx)
2269 {
2270 log_debug("%s", __func__);
2271
2272 input_clear(ictx);
2273 input_start_timer(ictx);
2274 ictx->last = -1;
2275 }
2276
2277 /* OSC terminator (ST) received. */
2278 static void
2279 input_exit_osc(struct input_ctx *ictx)
2280 {
2281 struct screen_write_ctx *sctx = &ictx->ctx;
2282 struct window_pane *wp = ictx->wp;
2283 u_char *p = ictx->input_buf;
2284 u_int option;
2285
2286 if (ictx->flags & INPUT_DISCARD)
2287 return;
2288 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2289 return;
2290
2291 log_debug("%s: \"%s\" (end %s)", __func__, p,
2292 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2293
2294 option = 0;
2295 while (*p >= '0' && *p <= '9')
2296 option = option * 10 + *p++ - '0';
2297 if (*p != ';' && *p != '\0')
2298 return;
2299 if (*p == ';')
2300 p++;
2301
2302 switch (option) {
2303 case 0:
2304 case 2:
2305 if (screen_set_title(sctx->s, p) && wp != NULL) {
2306 notify_pane("pane-title-changed", wp);
2307 server_redraw_window_borders(wp->window);
2308 server_status_window(wp->window);
2309 }
2310 break;
2311 case 4:
2312 input_osc_4(ictx, p);
2313 break;
2314 case 7:
2315 if (utf8_isvalid(p)) {
2316 screen_set_path(sctx->s, p);
2317 if (wp != NULL) {
2318 server_redraw_window_borders(wp->window);
2319 server_status_window(wp->window);
2320 }
2321 }
2322 break;
2323 case 8:
2324 input_osc_8(ictx, p);
2325 break;
2326 case 10:
2327 input_osc_10(ictx, p);
2328 break;
2329 case 11:
2330 input_osc_11(ictx, p);
2331 break;
2332 case 12:
2333 input_osc_12(ictx, p);
2334 break;
2335 case 52:
2336 input_osc_52(ictx, p);
2337 break;
2338 case 104:
2339 input_osc_104(ictx, p);
2340 break;
2341 case 110:
2342 input_osc_110(ictx, p);
2343 break;
2344 case 111:
2345 input_osc_111(ictx, p);
2346 break;
2347 case 112:
2348 input_osc_112(ictx, p);
2349 break;
2350 default:
2351 log_debug("%s: unknown '%u'", __func__, option);
2352 break;
2353 }
2354 }
2355
2356 /* APC string started. */
2357 static void
2358 input_enter_apc(struct input_ctx *ictx)
2359 {
2360 log_debug("%s", __func__);
2361
2362 input_clear(ictx);
2363 input_start_timer(ictx);
2364 ictx->last = -1;
2365 }
2366
2367 /* APC terminator (ST) received. */
2368 static void
2369 input_exit_apc(struct input_ctx *ictx)
2370 {
2371 struct screen_write_ctx *sctx = &ictx->ctx;
2372 struct window_pane *wp = ictx->wp;
2373
2374 if (ictx->flags & INPUT_DISCARD)
2375 return;
2376 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2377
2378 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2379 notify_pane("pane-title-changed", wp);
2380 server_redraw_window_borders(wp->window);
2381 server_status_window(wp->window);
2382 }
2383 }
2384
2385 /* Rename string started. */
2386 static void
2387 input_enter_rename(struct input_ctx *ictx)
2388 {
2389 log_debug("%s", __func__);
2390
2391 input_clear(ictx);
2392 input_start_timer(ictx);
2393 ictx->last = -1;
2394 }
2395
2396 /* Rename terminator (ST) received. */
2397 static void
2398 input_exit_rename(struct input_ctx *ictx)
2399 {
2400 struct window_pane *wp = ictx->wp;
2401 struct window *w;
2402 struct options_entry *o;
2403
2404 if (wp == NULL)
2405 return;
2406 if (ictx->flags & INPUT_DISCARD)
2407 return;
2408 if (!options_get_number(ictx->wp->options, "allow-rename"))
2409 return;
2410 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2411
2412 if (!utf8_isvalid(ictx->input_buf))
2413 return;
2414 w = wp->window;
2415
2416 if (ictx->input_len == 0) {
2417 o = options_get_only(w->options, "automatic-rename");
2418 if (o != NULL)
2419 options_remove_or_default(o, -1, NULL);
2420 if (!options_get_number(w->options, "automatic-rename"))
2421 window_set_name(w, "");
2422 } else {
2423 options_set_number(w->options, "automatic-rename", 0);
2424 window_set_name(w, ictx->input_buf);
2425 }
2426 server_redraw_window_borders(w);
2427 server_status_window(w);
2428 }
2429
2430 /* Open UTF-8 character. */
2431 static int
2432 input_top_bit_set(struct input_ctx *ictx)
2433 {
2434 struct screen_write_ctx *sctx = &ictx->ctx;
2435 struct utf8_data *ud = &ictx->utf8data;
2436
2437 ictx->last = -1;
2438
2439 if (!ictx->utf8started) {
2440 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2441 return (0);
2442 ictx->utf8started = 1;
2443 return (0);
2444 }
2445
2446 switch (utf8_append(ud, ictx->ch)) {
2447 case UTF8_MORE:
2448 return (0);
2449 case UTF8_ERROR:
2450 ictx->utf8started = 0;
2451 return (0);
2452 case UTF8_DONE:
2453 break;
2454 }
2455 ictx->utf8started = 0;
2456
2457 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2458 (int)ud->size, ud->data, ud->width);
2459
2460 utf8_copy(&ictx->cell.cell.data, ud);
2461 screen_write_collect_add(sctx, &ictx->cell.cell);
2462
2463 return (0);
2464 }
2465
2466 /* Reply to a colour request. */
2467 static void
2468 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2469 {
2470 u_char r, g, b;
2471 const char *end;
2472
2473 if (c != -1)
2474 c = colour_force_rgb(c);
2475 if (c == -1)
2476 return;
2477 colour_split_rgb(c, &r, &g, &b);
2478
2479 if (ictx->input_end == INPUT_END_BEL)
2480 end = "\007";
2481 else
2482 end = "\033\\";
2483 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2484 n, r, r, g, g, b, b, end);
2485 }
2486
2487 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2488 static void
2489 input_osc_4(struct input_ctx *ictx, const char *p)
2490 {
2491 char *copy, *s, *next = NULL;
2492 long idx;
2493 int c, bad = 0, redraw = 0;
2494
2495 copy = s = xstrdup(p);
2496 while (s != NULL && *s != '\0') {
2497 idx = strtol(s, &next, 10);
2498 if (*next++ != ';') {
2499 bad = 1;
2500 break;
2501 }
2502 if (idx < 0 || idx >= 256) {
2503 bad = 1;
2504 break;
2505 }
2506
2507 s = strsep(&next, ";");
2508 if (strcmp(s, "?") == 0) {
2509 c = colour_palette_get(ictx->palette, idx);
2510 if (c != -1)
2511 input_osc_colour_reply(ictx, 4, c);
2512 continue;
2513 }
2514 if ((c = colour_parseX11(s)) == -1) {
2515 s = next;
2516 continue;
2517 }
2518 if (colour_palette_set(ictx->palette, idx, c))
2519 redraw = 1;
2520 s = next;
2521 }
2522 if (bad)
2523 log_debug("bad OSC 4: %s", p);
2524 if (redraw)
2525 screen_write_fullredraw(&ictx->ctx);
2526 free(copy);
2527 }
2528
2529 /* Handle the OSC 8 sequence for embedding hyperlinks. */
2530 static void
2531 input_osc_8(struct input_ctx *ictx, const char *p)
2532 {
2533 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2534 struct grid_cell *gc = &ictx->cell.cell;
2535 const char *start, *end, *uri;
2536 char *id = NULL;
2537
2538 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
2539 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2540 if (id != NULL)
2541 goto bad;
2542 id = xstrndup(start + 3, end - start - 3);
2543 }
2544
2545 /* The first ; is the end of parameters and start of the URI. */
2546 if (*end == ';')
2547 break;
2548 }
2549 if (end == NULL || *end != ';')
2550 goto bad;
2551 uri = end + 1;
2552 if (*uri == '\0') {
2553 gc->link = 0;
2554 free(id);
2555 return;
2556 }
2557 gc->link = hyperlinks_put(hl, uri, id);
2558 if (id == NULL)
2559 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2560 else
2561 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2562 free(id);
2563 return;
2564
2565 bad:
2566 log_debug("bad OSC 8 %s", p);
2567 free(id);
2568 }
2569
2570 /*
2571 * Get a client with a foreground for the pane. There isn't much to choose
2572 * between them so just use the first.
2573 */
2574 static int
2575 input_get_fg_client(struct window_pane *wp)
2576 {
2577 struct window *w = wp->window;
2578 struct client *loop;
2579
2580 TAILQ_FOREACH(loop, &clients, entry) {
2581 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2582 continue;
2583 if (loop->session == NULL || !session_has(loop->session, w))
2584 continue;
2585 if (loop->tty.fg == -1)
2586 continue;
2587 return (loop->tty.fg);
2588 }
2589 return (-1);
2590 }
2591
2592 /* Get a client with a background for the pane. */
2593 static int
2594 input_get_bg_client(struct window_pane *wp)
2595 {
2596 struct window *w = wp->window;
2597 struct client *loop;
2598
2599 TAILQ_FOREACH(loop, &clients, entry) {
2600 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2601 continue;
2602 if (loop->session == NULL || !session_has(loop->session, w))
2603 continue;
2604 if (loop->tty.bg == -1)
2605 continue;
2606 return (loop->tty.bg);
2607 }
2608 return (-1);
2609 }
2610
2611 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2612 static void
2613 input_osc_10(struct input_ctx *ictx, const char *p)
2614 {
2615 struct window_pane *wp = ictx->wp;
2616 struct grid_cell defaults;
2617 int c;
2618
2619 if (strcmp(p, "?") == 0) {
2620 if (wp == NULL)
2621 return;
2622 tty_default_colours(&defaults, wp);
2623 if (COLOUR_DEFAULT(defaults.fg))
2624 c = input_get_fg_client(wp);
2625 else
2626 c = defaults.fg;
2627 input_osc_colour_reply(ictx, 10, c);
2628 return;
2629 }
2630
2631 if ((c = colour_parseX11(p)) == -1) {
2632 log_debug("bad OSC 10: %s", p);
2633 return;
2634 }
2635 if (ictx->palette != NULL) {
2636 ictx->palette->fg = c;
2637 if (wp != NULL)
2638 wp->flags |= PANE_STYLECHANGED;
2639 screen_write_fullredraw(&ictx->ctx);
2640 }
2641 }
2642
2643 /* Handle the OSC 110 sequence for resetting foreground colour. */
2644 static void
2645 input_osc_110(struct input_ctx *ictx, const char *p)
2646 {
2647 struct window_pane *wp = ictx->wp;
2648
2649 if (*p != '\0')
2650 return;
2651 if (ictx->palette != NULL) {
2652 ictx->palette->fg = 8;
2653 if (wp != NULL)
2654 wp->flags |= PANE_STYLECHANGED;
2655 screen_write_fullredraw(&ictx->ctx);
2656 }
2657 }
2658
2659 /* Handle the OSC 11 sequence for setting and querying background colour. */
2660 static void
2661 input_osc_11(struct input_ctx *ictx, const char *p)
2662 {
2663 struct window_pane *wp = ictx->wp;
2664 struct grid_cell defaults;
2665 int c;
2666
2667 if (strcmp(p, "?") == 0) {
2668 if (wp == NULL)
2669 return;
2670 tty_default_colours(&defaults, wp);
2671 if (COLOUR_DEFAULT(defaults.bg))
2672 c = input_get_bg_client(wp);
2673 else
2674 c = defaults.bg;
2675 input_osc_colour_reply(ictx, 11, c);
2676 return;
2677 }
2678
2679 if ((c = colour_parseX11(p)) == -1) {
2680 log_debug("bad OSC 11: %s", p);
2681 return;
2682 }
2683 if (ictx->palette != NULL) {
2684 ictx->palette->bg = c;
2685 if (wp != NULL)
2686 wp->flags |= PANE_STYLECHANGED;
2687 screen_write_fullredraw(&ictx->ctx);
2688 }
2689 }
2690
2691 /* Handle the OSC 111 sequence for resetting background colour. */
2692 static void
2693 input_osc_111(struct input_ctx *ictx, const char *p)
2694 {
2695 struct window_pane *wp = ictx->wp;
2696
2697 if (*p != '\0')
2698 return;
2699 if (ictx->palette != NULL) {
2700 ictx->palette->bg = 8;
2701 if (wp != NULL)
2702 wp->flags |= PANE_STYLECHANGED;
2703 screen_write_fullredraw(&ictx->ctx);
2704 }
2705 }
2706
2707 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2708 static void
2709 input_osc_12(struct input_ctx *ictx, const char *p)
2710 {
2711 struct window_pane *wp = ictx->wp;
2712 int c;
2713
2714 if (strcmp(p, "?") == 0) {
2715 if (wp != NULL) {
2716 c = ictx->ctx.s->ccolour;
2717 if (c == -1)
2718 c = ictx->ctx.s->default_ccolour;
2719 input_osc_colour_reply(ictx, 12, c);
2720 }
2721 return;
2722 }
2723
2724 if ((c = colour_parseX11(p)) == -1) {
2725 log_debug("bad OSC 12: %s", p);
2726 return;
2727 }
2728 screen_set_cursor_colour(ictx->ctx.s, c);
2729 }
2730
2731 /* Handle the OSC 112 sequence for resetting cursor colour. */
2732 static void
2733 input_osc_112(struct input_ctx *ictx, const char *p)
2734 {
2735 if (*p == '\0') /* no arguments allowed */
2736 screen_set_cursor_colour(ictx->ctx.s, -1);
2737 }
2738
2739
2740 /* Handle the OSC 52 sequence for setting the clipboard. */
2741 static void
2742 input_osc_52(struct input_ctx *ictx, const char *p)
2743 {
2744 struct window_pane *wp = ictx->wp;
2745 char *end;
2746 const char *buf = NULL;
2747 size_t len = 0;
2748 u_char *out;
2749 int outlen, state;
2750 struct screen_write_ctx ctx;
2751 struct paste_buffer *pb;
2752 const char* allow = "cpqs01234567";
2753 char flags[sizeof "cpqs01234567"] = "";
2754 u_int i, j = 0;
2755
2756 if (wp == NULL)
2757 return;
2758 state = options_get_number(global_options, "set-clipboard");
2759 if (state != 2)
2760 return;
2761
2762 if ((end = strchr(p, ';')) == NULL)
2763 return;
2764 end++;
2765 if (*end == '\0')
2766 return;
2767 log_debug("%s: %s", __func__, end);
2768
2769 for (i = 0; p + i != end; i++) {
2770 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2771 flags[j++] = p[i];
2772 }
2773 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2774
2775 if (strcmp(end, "?") == 0) {
2776 if ((pb = paste_get_top(NULL)) != NULL)
2777 buf = paste_buffer_data(pb, &len);
2778 if (ictx->input_end == INPUT_END_BEL)
2779 input_reply_clipboard(ictx->event, buf, len, "\007");
2780 else
2781 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2782 return;
2783 }
2784
2785 len = (strlen(end) / 4) * 3;
2786 if (len == 0)
2787 return;
2788
2789 out = xmalloc(len);
2790 if ((outlen = b64_pton(end, out, len)) == -1) {
2791 free(out);
2792 return;
2793 }
2794
2795 screen_write_start_pane(&ctx, wp, NULL);
2796 screen_write_setselection(&ctx, flags, out, outlen);
2797 screen_write_stop(&ctx);
2798 notify_pane("pane-set-clipboard", wp);
2799
2800 paste_add(NULL, out, outlen);
2801 }
2802
2803 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2804 static void
2805 input_osc_104(struct input_ctx *ictx, const char *p)
2806 {
2807 char *copy, *s;
2808 long idx;
2809 int bad = 0, redraw = 0;
2810
2811 if (*p == '\0') {
2812 colour_palette_clear(ictx->palette);
2813 screen_write_fullredraw(&ictx->ctx);
2814 return;
2815 }
2816
2817 copy = s = xstrdup(p);
2818 while (*s != '\0') {
2819 idx = strtol(s, &s, 10);
2820 if (*s != '\0' && *s != ';') {
2821 bad = 1;
2822 break;
2823 }
2824 if (idx < 0 || idx >= 256) {
2825 bad = 1;
2826 break;
2827 }
2828 if (colour_palette_set(ictx->palette, idx, -1))
2829 redraw = 1;
2830 if (*s == ';')
2831 s++;
2832 }
2833 if (bad)
2834 log_debug("bad OSC 104: %s", p);
2835 if (redraw)
2836 screen_write_fullredraw(&ictx->ctx);
2837 free(copy);
2838 }
2839
2840 void
2841 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2842 const char *end)
2843 {
2844 char *out = NULL;
2845 int outlen = 0;
2846
2847 if (buf != NULL && len != 0) {
2848 if (len >= ((size_t)INT_MAX * 3 / 4) - 1)
2849 return;
2850 outlen = 4 * ((len + 2) / 3) + 1;
2851 out = xmalloc(outlen);
2852 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2853 free(out);
2854 return;
2855 }
2856 }
2857
2858 bufferevent_write(bev, "\033]52;;", 6);
2859 if (outlen != 0)
2860 bufferevent_write(bev, out, outlen);
2861 bufferevent_write(bev, end, strlen(end));
2862 free(out);
2863 }