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Add an option allow-set-title to forbid applications from changing the
[tmux-openbsd.git] / input.c
blob2ae4b89afea1c2640ea31f76695fb754c04b49ab
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #include <netinet/in.h>
22
23 #include <ctype.h>
24 #include <resolv.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <time.h>
28
29 #include "tmux.h"
30
31 /*
32 * Based on the description by Paul Williams at:
33 *
34 * https://vt100.net/emu/dec_ansi_parser
35 *
36 * With the following changes:
37 *
38 * - 7-bit only.
39 *
40 * - Support for UTF-8.
41 *
42 * - OSC (but not APC) may be terminated by \007 as well as ST.
43 *
44 * - A state for APC similar to OSC. Some terminals appear to use this to set
45 * the title.
46 *
47 * - A state for the screen \033k...\033\\ sequence to rename a window. This is
48 * pretty stupid but not supporting it is more trouble than it is worth.
49 *
50 * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to
51 * be passed to the underlying terminals.
52 */
53
54 /* Input parser cell. */
55 struct input_cell {
56 struct grid_cell cell;
57 int set;
58 int g0set; /* 1 if ACS */
59 int g1set; /* 1 if ACS */
60 };
61
62 /* Input parser argument. */
63 struct input_param {
64 enum {
65 INPUT_MISSING,
66 INPUT_NUMBER,
67 INPUT_STRING
68 } type;
69 union {
70 int num;
71 char *str;
72 };
73 };
74
75 /* Input parser context. */
76 struct input_ctx {
77 struct window_pane *wp;
78 struct bufferevent *event;
79 struct screen_write_ctx ctx;
80 struct colour_palette *palette;
81
82 struct input_cell cell;
83
84 struct input_cell old_cell;
85 u_int old_cx;
86 u_int old_cy;
87 int old_mode;
88
89 u_char interm_buf[4];
90 size_t interm_len;
91
92 u_char param_buf[64];
93 size_t param_len;
94
95 #define INPUT_BUF_START 32
96 #define INPUT_BUF_LIMIT 1048576
97 u_char *input_buf;
98 size_t input_len;
99 size_t input_space;
100 enum {
101 INPUT_END_ST,
102 INPUT_END_BEL
103 } input_end;
104
105 struct input_param param_list[24];
106 u_int param_list_len;
107
108 struct utf8_data utf8data;
109 int utf8started;
110
111 int ch;
112 int last;
113
114 int flags;
115 #define INPUT_DISCARD 0x1
116
117 const struct input_state *state;
118
119 struct event timer;
120
121 /*
122 * All input received since we were last in the ground state. Sent to
123 * control clients on connection.
124 */
125 struct evbuffer *since_ground;
126 };
127
128 /* Helper functions. */
129 struct input_transition;
130 static int input_split(struct input_ctx *);
131 static int input_get(struct input_ctx *, u_int, int, int);
132 static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...);
133 static void input_set_state(struct input_ctx *,
134 const struct input_transition *);
135 static void input_reset_cell(struct input_ctx *);
136
137 static void input_osc_4(struct input_ctx *, const char *);
138 static void input_osc_8(struct input_ctx *, const char *);
139 static void input_osc_10(struct input_ctx *, const char *);
140 static void input_osc_11(struct input_ctx *, const char *);
141 static void input_osc_12(struct input_ctx *, const char *);
142 static void input_osc_52(struct input_ctx *, const char *);
143 static void input_osc_104(struct input_ctx *, const char *);
144 static void input_osc_110(struct input_ctx *, const char *);
145 static void input_osc_111(struct input_ctx *, const char *);
146 static void input_osc_112(struct input_ctx *, const char *);
147 static void input_osc_133(struct input_ctx *, const char *);
148
149 /* Transition entry/exit handlers. */
150 static void input_clear(struct input_ctx *);
151 static void input_ground(struct input_ctx *);
152 static void input_enter_dcs(struct input_ctx *);
153 static void input_enter_osc(struct input_ctx *);
154 static void input_exit_osc(struct input_ctx *);
155 static void input_enter_apc(struct input_ctx *);
156 static void input_exit_apc(struct input_ctx *);
157 static void input_enter_rename(struct input_ctx *);
158 static void input_exit_rename(struct input_ctx *);
159
160 /* Input state handlers. */
161 static int input_print(struct input_ctx *);
162 static int input_intermediate(struct input_ctx *);
163 static int input_parameter(struct input_ctx *);
164 static int input_input(struct input_ctx *);
165 static int input_c0_dispatch(struct input_ctx *);
166 static int input_esc_dispatch(struct input_ctx *);
167 static int input_csi_dispatch(struct input_ctx *);
168 static void input_csi_dispatch_rm(struct input_ctx *);
169 static void input_csi_dispatch_rm_private(struct input_ctx *);
170 static void input_csi_dispatch_sm(struct input_ctx *);
171 static void input_csi_dispatch_sm_private(struct input_ctx *);
172 static void input_csi_dispatch_sm_graphics(struct input_ctx *);
173 static void input_csi_dispatch_winops(struct input_ctx *);
174 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
175 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
176 static void input_csi_dispatch_sgr(struct input_ctx *);
177 static int input_dcs_dispatch(struct input_ctx *);
178 static int input_top_bit_set(struct input_ctx *);
179 static int input_end_bel(struct input_ctx *);
180
181 /* Command table comparison function. */
182 static int input_table_compare(const void *, const void *);
183
184 /* Command table entry. */
185 struct input_table_entry {
186 int ch;
187 const char *interm;
188 int type;
189 };
190
191 /* Escape commands. */
192 enum input_esc_type {
193 INPUT_ESC_DECALN,
194 INPUT_ESC_DECKPAM,
195 INPUT_ESC_DECKPNM,
196 INPUT_ESC_DECRC,
197 INPUT_ESC_DECSC,
198 INPUT_ESC_HTS,
199 INPUT_ESC_IND,
200 INPUT_ESC_NEL,
201 INPUT_ESC_RI,
202 INPUT_ESC_RIS,
203 INPUT_ESC_SCSG0_OFF,
204 INPUT_ESC_SCSG0_ON,
205 INPUT_ESC_SCSG1_OFF,
206 INPUT_ESC_SCSG1_ON,
207 INPUT_ESC_ST
208 };
209
210 /* Escape command table. */
211 static const struct input_table_entry input_esc_table[] = {
212 { '0', "(", INPUT_ESC_SCSG0_ON },
213 { '0', ")", INPUT_ESC_SCSG1_ON },
214 { '7', "", INPUT_ESC_DECSC },
215 { '8', "", INPUT_ESC_DECRC },
216 { '8', "#", INPUT_ESC_DECALN },
217 { '=', "", INPUT_ESC_DECKPAM },
218 { '>', "", INPUT_ESC_DECKPNM },
219 { 'B', "(", INPUT_ESC_SCSG0_OFF },
220 { 'B', ")", INPUT_ESC_SCSG1_OFF },
221 { 'D', "", INPUT_ESC_IND },
222 { 'E', "", INPUT_ESC_NEL },
223 { 'H', "", INPUT_ESC_HTS },
224 { 'M', "", INPUT_ESC_RI },
225 { '\\', "", INPUT_ESC_ST },
226 { 'c', "", INPUT_ESC_RIS },
227 };
228
229 /* Control (CSI) commands. */
230 enum input_csi_type {
231 INPUT_CSI_CBT,
232 INPUT_CSI_CNL,
233 INPUT_CSI_CPL,
234 INPUT_CSI_CUB,
235 INPUT_CSI_CUD,
236 INPUT_CSI_CUF,
237 INPUT_CSI_CUP,
238 INPUT_CSI_CUU,
239 INPUT_CSI_DA,
240 INPUT_CSI_DA_TWO,
241 INPUT_CSI_DCH,
242 INPUT_CSI_DECSCUSR,
243 INPUT_CSI_DECSTBM,
244 INPUT_CSI_DL,
245 INPUT_CSI_DSR,
246 INPUT_CSI_ECH,
247 INPUT_CSI_ED,
248 INPUT_CSI_EL,
249 INPUT_CSI_HPA,
250 INPUT_CSI_ICH,
251 INPUT_CSI_IL,
252 INPUT_CSI_MODOFF,
253 INPUT_CSI_MODSET,
254 INPUT_CSI_RCP,
255 INPUT_CSI_REP,
256 INPUT_CSI_RM,
257 INPUT_CSI_RM_PRIVATE,
258 INPUT_CSI_SCP,
259 INPUT_CSI_SD,
260 INPUT_CSI_SGR,
261 INPUT_CSI_SM,
262 INPUT_CSI_SM_PRIVATE,
263 INPUT_CSI_SM_GRAPHICS,
264 INPUT_CSI_SU,
265 INPUT_CSI_TBC,
266 INPUT_CSI_VPA,
267 INPUT_CSI_WINOPS,
268 INPUT_CSI_XDA
269 };
270
271 /* Control (CSI) command table. */
272 static const struct input_table_entry input_csi_table[] = {
273 { '@', "", INPUT_CSI_ICH },
274 { 'A', "", INPUT_CSI_CUU },
275 { 'B', "", INPUT_CSI_CUD },
276 { 'C', "", INPUT_CSI_CUF },
277 { 'D', "", INPUT_CSI_CUB },
278 { 'E', "", INPUT_CSI_CNL },
279 { 'F', "", INPUT_CSI_CPL },
280 { 'G', "", INPUT_CSI_HPA },
281 { 'H', "", INPUT_CSI_CUP },
282 { 'J', "", INPUT_CSI_ED },
283 { 'K', "", INPUT_CSI_EL },
284 { 'L', "", INPUT_CSI_IL },
285 { 'M', "", INPUT_CSI_DL },
286 { 'P', "", INPUT_CSI_DCH },
287 { 'S', "", INPUT_CSI_SU },
288 { 'S', "?", INPUT_CSI_SM_GRAPHICS },
289 { 'T', "", INPUT_CSI_SD },
290 { 'X', "", INPUT_CSI_ECH },
291 { 'Z', "", INPUT_CSI_CBT },
292 { '`', "", INPUT_CSI_HPA },
293 { 'b', "", INPUT_CSI_REP },
294 { 'c', "", INPUT_CSI_DA },
295 { 'c', ">", INPUT_CSI_DA_TWO },
296 { 'd', "", INPUT_CSI_VPA },
297 { 'f', "", INPUT_CSI_CUP },
298 { 'g', "", INPUT_CSI_TBC },
299 { 'h', "", INPUT_CSI_SM },
300 { 'h', "?", INPUT_CSI_SM_PRIVATE },
301 { 'l', "", INPUT_CSI_RM },
302 { 'l', "?", INPUT_CSI_RM_PRIVATE },
303 { 'm', "", INPUT_CSI_SGR },
304 { 'm', ">", INPUT_CSI_MODSET },
305 { 'n', "", INPUT_CSI_DSR },
306 { 'n', ">", INPUT_CSI_MODOFF },
307 { 'q', " ", INPUT_CSI_DECSCUSR },
308 { 'q', ">", INPUT_CSI_XDA },
309 { 'r', "", INPUT_CSI_DECSTBM },
310 { 's', "", INPUT_CSI_SCP },
311 { 't', "", INPUT_CSI_WINOPS },
312 { 'u', "", INPUT_CSI_RCP }
313 };
314
315 /* Input transition. */
316 struct input_transition {
317 int first;
318 int last;
319
320 int (*handler)(struct input_ctx *);
321 const struct input_state *state;
322 };
323
324 /* Input state. */
325 struct input_state {
326 const char *name;
327 void (*enter)(struct input_ctx *);
328 void (*exit)(struct input_ctx *);
329 const struct input_transition *transitions;
330 };
331
332 /* State transitions available from all states. */
333 #define INPUT_STATE_ANYWHERE \
334 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
335 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
336 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
337
338 /* Forward declarations of state tables. */
339 static const struct input_transition input_state_ground_table[];
340 static const struct input_transition input_state_esc_enter_table[];
341 static const struct input_transition input_state_esc_intermediate_table[];
342 static const struct input_transition input_state_csi_enter_table[];
343 static const struct input_transition input_state_csi_parameter_table[];
344 static const struct input_transition input_state_csi_intermediate_table[];
345 static const struct input_transition input_state_csi_ignore_table[];
346 static const struct input_transition input_state_dcs_enter_table[];
347 static const struct input_transition input_state_dcs_parameter_table[];
348 static const struct input_transition input_state_dcs_intermediate_table[];
349 static const struct input_transition input_state_dcs_handler_table[];
350 static const struct input_transition input_state_dcs_escape_table[];
351 static const struct input_transition input_state_dcs_ignore_table[];
352 static const struct input_transition input_state_osc_string_table[];
353 static const struct input_transition input_state_apc_string_table[];
354 static const struct input_transition input_state_rename_string_table[];
355 static const struct input_transition input_state_consume_st_table[];
356
357 /* ground state definition. */
358 static const struct input_state input_state_ground = {
359 "ground",
360 input_ground, NULL,
361 input_state_ground_table
362 };
363
364 /* esc_enter state definition. */
365 static const struct input_state input_state_esc_enter = {
366 "esc_enter",
367 input_clear, NULL,
368 input_state_esc_enter_table
369 };
370
371 /* esc_intermediate state definition. */
372 static const struct input_state input_state_esc_intermediate = {
373 "esc_intermediate",
374 NULL, NULL,
375 input_state_esc_intermediate_table
376 };
377
378 /* csi_enter state definition. */
379 static const struct input_state input_state_csi_enter = {
380 "csi_enter",
381 input_clear, NULL,
382 input_state_csi_enter_table
383 };
384
385 /* csi_parameter state definition. */
386 static const struct input_state input_state_csi_parameter = {
387 "csi_parameter",
388 NULL, NULL,
389 input_state_csi_parameter_table
390 };
391
392 /* csi_intermediate state definition. */
393 static const struct input_state input_state_csi_intermediate = {
394 "csi_intermediate",
395 NULL, NULL,
396 input_state_csi_intermediate_table
397 };
398
399 /* csi_ignore state definition. */
400 static const struct input_state input_state_csi_ignore = {
401 "csi_ignore",
402 NULL, NULL,
403 input_state_csi_ignore_table
404 };
405
406 /* dcs_enter state definition. */
407 static const struct input_state input_state_dcs_enter = {
408 "dcs_enter",
409 input_enter_dcs, NULL,
410 input_state_dcs_enter_table
411 };
412
413 /* dcs_parameter state definition. */
414 static const struct input_state input_state_dcs_parameter = {
415 "dcs_parameter",
416 NULL, NULL,
417 input_state_dcs_parameter_table
418 };
419
420 /* dcs_intermediate state definition. */
421 static const struct input_state input_state_dcs_intermediate = {
422 "dcs_intermediate",
423 NULL, NULL,
424 input_state_dcs_intermediate_table
425 };
426
427 /* dcs_handler state definition. */
428 static const struct input_state input_state_dcs_handler = {
429 "dcs_handler",
430 NULL, NULL,
431 input_state_dcs_handler_table
432 };
433
434 /* dcs_escape state definition. */
435 static const struct input_state input_state_dcs_escape = {
436 "dcs_escape",
437 NULL, NULL,
438 input_state_dcs_escape_table
439 };
440
441 /* dcs_ignore state definition. */
442 static const struct input_state input_state_dcs_ignore = {
443 "dcs_ignore",
444 NULL, NULL,
445 input_state_dcs_ignore_table
446 };
447
448 /* osc_string state definition. */
449 static const struct input_state input_state_osc_string = {
450 "osc_string",
451 input_enter_osc, input_exit_osc,
452 input_state_osc_string_table
453 };
454
455 /* apc_string state definition. */
456 static const struct input_state input_state_apc_string = {
457 "apc_string",
458 input_enter_apc, input_exit_apc,
459 input_state_apc_string_table
460 };
461
462 /* rename_string state definition. */
463 static const struct input_state input_state_rename_string = {
464 "rename_string",
465 input_enter_rename, input_exit_rename,
466 input_state_rename_string_table
467 };
468
469 /* consume_st state definition. */
470 static const struct input_state input_state_consume_st = {
471 "consume_st",
472 input_enter_rename, NULL, /* rename also waits for ST */
473 input_state_consume_st_table
474 };
475
476 /* ground state table. */
477 static const struct input_transition input_state_ground_table[] = {
478 INPUT_STATE_ANYWHERE,
479
480 { 0x00, 0x17, input_c0_dispatch, NULL },
481 { 0x19, 0x19, input_c0_dispatch, NULL },
482 { 0x1c, 0x1f, input_c0_dispatch, NULL },
483 { 0x20, 0x7e, input_print, NULL },
484 { 0x7f, 0x7f, NULL, NULL },
485 { 0x80, 0xff, input_top_bit_set, NULL },
486
487 { -1, -1, NULL, NULL }
488 };
489
490 /* esc_enter state table. */
491 static const struct input_transition input_state_esc_enter_table[] = {
492 INPUT_STATE_ANYWHERE,
493
494 { 0x00, 0x17, input_c0_dispatch, NULL },
495 { 0x19, 0x19, input_c0_dispatch, NULL },
496 { 0x1c, 0x1f, input_c0_dispatch, NULL },
497 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
498 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
499 { 0x50, 0x50, NULL, &input_state_dcs_enter },
500 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
501 { 0x58, 0x58, NULL, &input_state_consume_st },
502 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
503 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
504 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
505 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
506 { 0x5d, 0x5d, NULL, &input_state_osc_string },
507 { 0x5e, 0x5e, NULL, &input_state_consume_st },
508 { 0x5f, 0x5f, NULL, &input_state_apc_string },
509 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
510 { 0x6b, 0x6b, NULL, &input_state_rename_string },
511 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
512 { 0x7f, 0xff, NULL, NULL },
513
514 { -1, -1, NULL, NULL }
515 };
516
517 /* esc_intermediate state table. */
518 static const struct input_transition input_state_esc_intermediate_table[] = {
519 INPUT_STATE_ANYWHERE,
520
521 { 0x00, 0x17, input_c0_dispatch, NULL },
522 { 0x19, 0x19, input_c0_dispatch, NULL },
523 { 0x1c, 0x1f, input_c0_dispatch, NULL },
524 { 0x20, 0x2f, input_intermediate, NULL },
525 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
526 { 0x7f, 0xff, NULL, NULL },
527
528 { -1, -1, NULL, NULL }
529 };
530
531 /* csi_enter state table. */
532 static const struct input_transition input_state_csi_enter_table[] = {
533 INPUT_STATE_ANYWHERE,
534
535 { 0x00, 0x17, input_c0_dispatch, NULL },
536 { 0x19, 0x19, input_c0_dispatch, NULL },
537 { 0x1c, 0x1f, input_c0_dispatch, NULL },
538 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
539 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
540 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
541 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
542 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
543 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
544 { 0x7f, 0xff, NULL, NULL },
545
546 { -1, -1, NULL, NULL }
547 };
548
549 /* csi_parameter state table. */
550 static const struct input_transition input_state_csi_parameter_table[] = {
551 INPUT_STATE_ANYWHERE,
552
553 { 0x00, 0x17, input_c0_dispatch, NULL },
554 { 0x19, 0x19, input_c0_dispatch, NULL },
555 { 0x1c, 0x1f, input_c0_dispatch, NULL },
556 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
557 { 0x30, 0x39, input_parameter, NULL },
558 { 0x3a, 0x3a, input_parameter, NULL },
559 { 0x3b, 0x3b, input_parameter, NULL },
560 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
561 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
562 { 0x7f, 0xff, NULL, NULL },
563
564 { -1, -1, NULL, NULL }
565 };
566
567 /* csi_intermediate state table. */
568 static const struct input_transition input_state_csi_intermediate_table[] = {
569 INPUT_STATE_ANYWHERE,
570
571 { 0x00, 0x17, input_c0_dispatch, NULL },
572 { 0x19, 0x19, input_c0_dispatch, NULL },
573 { 0x1c, 0x1f, input_c0_dispatch, NULL },
574 { 0x20, 0x2f, input_intermediate, NULL },
575 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
576 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
577 { 0x7f, 0xff, NULL, NULL },
578
579 { -1, -1, NULL, NULL }
580 };
581
582 /* csi_ignore state table. */
583 static const struct input_transition input_state_csi_ignore_table[] = {
584 INPUT_STATE_ANYWHERE,
585
586 { 0x00, 0x17, input_c0_dispatch, NULL },
587 { 0x19, 0x19, input_c0_dispatch, NULL },
588 { 0x1c, 0x1f, input_c0_dispatch, NULL },
589 { 0x20, 0x3f, NULL, NULL },
590 { 0x40, 0x7e, NULL, &input_state_ground },
591 { 0x7f, 0xff, NULL, NULL },
592
593 { -1, -1, NULL, NULL }
594 };
595
596 /* dcs_enter state table. */
597 static const struct input_transition input_state_dcs_enter_table[] = {
598 INPUT_STATE_ANYWHERE,
599
600 { 0x00, 0x17, NULL, NULL },
601 { 0x19, 0x19, NULL, NULL },
602 { 0x1c, 0x1f, NULL, NULL },
603 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
604 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
605 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
606 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
607 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
608 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
609 { 0x7f, 0xff, NULL, NULL },
610
611 { -1, -1, NULL, NULL }
612 };
613
614 /* dcs_parameter state table. */
615 static const struct input_transition input_state_dcs_parameter_table[] = {
616 INPUT_STATE_ANYWHERE,
617
618 { 0x00, 0x17, NULL, NULL },
619 { 0x19, 0x19, NULL, NULL },
620 { 0x1c, 0x1f, NULL, NULL },
621 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
622 { 0x30, 0x39, input_parameter, NULL },
623 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
624 { 0x3b, 0x3b, input_parameter, NULL },
625 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
626 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
627 { 0x7f, 0xff, NULL, NULL },
628
629 { -1, -1, NULL, NULL }
630 };
631
632 /* dcs_intermediate state table. */
633 static const struct input_transition input_state_dcs_intermediate_table[] = {
634 INPUT_STATE_ANYWHERE,
635
636 { 0x00, 0x17, NULL, NULL },
637 { 0x19, 0x19, NULL, NULL },
638 { 0x1c, 0x1f, NULL, NULL },
639 { 0x20, 0x2f, input_intermediate, NULL },
640 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
641 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
642 { 0x7f, 0xff, NULL, NULL },
643
644 { -1, -1, NULL, NULL }
645 };
646
647 /* dcs_handler state table. */
648 static const struct input_transition input_state_dcs_handler_table[] = {
649 /* No INPUT_STATE_ANYWHERE */
650
651 { 0x00, 0x1a, input_input, NULL },
652 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
653 { 0x1c, 0xff, input_input, NULL },
654
655 { -1, -1, NULL, NULL }
656 };
657
658 /* dcs_escape state table. */
659 static const struct input_transition input_state_dcs_escape_table[] = {
660 /* No INPUT_STATE_ANYWHERE */
661
662 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
663 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
664 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
665
666 { -1, -1, NULL, NULL }
667 };
668
669 /* dcs_ignore state table. */
670 static const struct input_transition input_state_dcs_ignore_table[] = {
671 INPUT_STATE_ANYWHERE,
672
673 { 0x00, 0x17, NULL, NULL },
674 { 0x19, 0x19, NULL, NULL },
675 { 0x1c, 0x1f, NULL, NULL },
676 { 0x20, 0xff, NULL, NULL },
677
678 { -1, -1, NULL, NULL }
679 };
680
681 /* osc_string state table. */
682 static const struct input_transition input_state_osc_string_table[] = {
683 INPUT_STATE_ANYWHERE,
684
685 { 0x00, 0x06, NULL, NULL },
686 { 0x07, 0x07, input_end_bel, &input_state_ground },
687 { 0x08, 0x17, NULL, NULL },
688 { 0x19, 0x19, NULL, NULL },
689 { 0x1c, 0x1f, NULL, NULL },
690 { 0x20, 0xff, input_input, NULL },
691
692 { -1, -1, NULL, NULL }
693 };
694
695 /* apc_string state table. */
696 static const struct input_transition input_state_apc_string_table[] = {
697 INPUT_STATE_ANYWHERE,
698
699 { 0x00, 0x17, NULL, NULL },
700 { 0x19, 0x19, NULL, NULL },
701 { 0x1c, 0x1f, NULL, NULL },
702 { 0x20, 0xff, input_input, NULL },
703
704 { -1, -1, NULL, NULL }
705 };
706
707 /* rename_string state table. */
708 static const struct input_transition input_state_rename_string_table[] = {
709 INPUT_STATE_ANYWHERE,
710
711 { 0x00, 0x17, NULL, NULL },
712 { 0x19, 0x19, NULL, NULL },
713 { 0x1c, 0x1f, NULL, NULL },
714 { 0x20, 0xff, input_input, NULL },
715
716 { -1, -1, NULL, NULL }
717 };
718
719 /* consume_st state table. */
720 static const struct input_transition input_state_consume_st_table[] = {
721 INPUT_STATE_ANYWHERE,
722
723 { 0x00, 0x17, NULL, NULL },
724 { 0x19, 0x19, NULL, NULL },
725 { 0x1c, 0x1f, NULL, NULL },
726 { 0x20, 0xff, NULL, NULL },
727
728 { -1, -1, NULL, NULL }
729 };
730
731 /* Input table compare. */
732 static int
733 input_table_compare(const void *key, const void *value)
734 {
735 const struct input_ctx *ictx = key;
736 const struct input_table_entry *entry = value;
737
738 if (ictx->ch != entry->ch)
739 return (ictx->ch - entry->ch);
740 return (strcmp(ictx->interm_buf, entry->interm));
741 }
742
743 /*
744 * Timer - if this expires then have been waiting for a terminator for too
745 * long, so reset to ground.
746 */
747 static void
748 input_timer_callback(__unused int fd, __unused short events, void *arg)
749 {
750 struct input_ctx *ictx = arg;
751
752 log_debug("%s: %s expired" , __func__, ictx->state->name);
753 input_reset(ictx, 0);
754 }
755
756 /* Start the timer. */
757 static void
758 input_start_timer(struct input_ctx *ictx)
759 {
760 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
761
762 event_del(&ictx->timer);
763 event_add(&ictx->timer, &tv);
764 }
765
766 /* Reset cell state to default. */
767 static void
768 input_reset_cell(struct input_ctx *ictx)
769 {
770 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
771 ictx->cell.set = 0;
772 ictx->cell.g0set = ictx->cell.g1set = 0;
773
774 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
775 ictx->old_cx = 0;
776 ictx->old_cy = 0;
777 }
778
779 /* Save screen state. */
780 static void
781 input_save_state(struct input_ctx *ictx)
782 {
783 struct screen_write_ctx *sctx = &ictx->ctx;
784 struct screen *s = sctx->s;
785
786 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
787 ictx->old_cx = s->cx;
788 ictx->old_cy = s->cy;
789 ictx->old_mode = s->mode;
790 }
791
792 /* Restore screen state. */
793 static void
794 input_restore_state(struct input_ctx *ictx)
795 {
796 struct screen_write_ctx *sctx = &ictx->ctx;
797
798 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
799 if (ictx->old_mode & MODE_ORIGIN)
800 screen_write_mode_set(sctx, MODE_ORIGIN);
801 else
802 screen_write_mode_clear(sctx, MODE_ORIGIN);
803 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
804 }
805
806 /* Initialise input parser. */
807 struct input_ctx *
808 input_init(struct window_pane *wp, struct bufferevent *bev,
809 struct colour_palette *palette)
810 {
811 struct input_ctx *ictx;
812
813 ictx = xcalloc(1, sizeof *ictx);
814 ictx->wp = wp;
815 ictx->event = bev;
816 ictx->palette = palette;
817
818 ictx->input_space = INPUT_BUF_START;
819 ictx->input_buf = xmalloc(INPUT_BUF_START);
820
821 ictx->since_ground = evbuffer_new();
822 if (ictx->since_ground == NULL)
823 fatalx("out of memory");
824
825 evtimer_set(&ictx->timer, input_timer_callback, ictx);
826
827 input_reset(ictx, 0);
828 return (ictx);
829 }
830
831 /* Destroy input parser. */
832 void
833 input_free(struct input_ctx *ictx)
834 {
835 u_int i;
836
837 for (i = 0; i < ictx->param_list_len; i++) {
838 if (ictx->param_list[i].type == INPUT_STRING)
839 free(ictx->param_list[i].str);
840 }
841
842 event_del(&ictx->timer);
843
844 free(ictx->input_buf);
845 evbuffer_free(ictx->since_ground);
846
847 free(ictx);
848 }
849
850 /* Reset input state and clear screen. */
851 void
852 input_reset(struct input_ctx *ictx, int clear)
853 {
854 struct screen_write_ctx *sctx = &ictx->ctx;
855 struct window_pane *wp = ictx->wp;
856
857 input_reset_cell(ictx);
858
859 if (clear && wp != NULL) {
860 if (TAILQ_EMPTY(&wp->modes))
861 screen_write_start_pane(sctx, wp, &wp->base);
862 else
863 screen_write_start(sctx, &wp->base);
864 screen_write_reset(sctx);
865 screen_write_stop(sctx);
866 }
867
868 input_clear(ictx);
869
870 ictx->last = -1;
871
872 ictx->state = &input_state_ground;
873 ictx->flags = 0;
874 }
875
876 /* Return pending data. */
877 struct evbuffer *
878 input_pending(struct input_ctx *ictx)
879 {
880 return (ictx->since_ground);
881 }
882
883 /* Change input state. */
884 static void
885 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
886 {
887 if (ictx->state->exit != NULL)
888 ictx->state->exit(ictx);
889 ictx->state = itr->state;
890 if (ictx->state->enter != NULL)
891 ictx->state->enter(ictx);
892 }
893
894 /* Parse data. */
895 static void
896 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
897 {
898 struct screen_write_ctx *sctx = &ictx->ctx;
899 const struct input_state *state = NULL;
900 const struct input_transition *itr = NULL;
901 size_t off = 0;
902
903 /* Parse the input. */
904 while (off < len) {
905 ictx->ch = buf[off++];
906
907 /* Find the transition. */
908 if (ictx->state != state ||
909 itr == NULL ||
910 ictx->ch < itr->first ||
911 ictx->ch > itr->last) {
912 itr = ictx->state->transitions;
913 while (itr->first != -1 && itr->last != -1) {
914 if (ictx->ch >= itr->first &&
915 ictx->ch <= itr->last)
916 break;
917 itr++;
918 }
919 if (itr->first == -1 || itr->last == -1) {
920 /* No transition? Eh? */
921 fatalx("no transition from state");
922 }
923 }
924 state = ictx->state;
925
926 /*
927 * Any state except print stops the current collection. This is
928 * an optimization to avoid checking if the attributes have
929 * changed for every character. It will stop unnecessarily for
930 * sequences that don't make a terminal change, but they should
931 * be the minority.
932 */
933 if (itr->handler != input_print)
934 screen_write_collect_end(sctx);
935
936 /*
937 * Execute the handler, if any. Don't switch state if it
938 * returns non-zero.
939 */
940 if (itr->handler != NULL && itr->handler(ictx) != 0)
941 continue;
942
943 /* And switch state, if necessary. */
944 if (itr->state != NULL)
945 input_set_state(ictx, itr);
946
947 /* If not in ground state, save input. */
948 if (ictx->state != &input_state_ground)
949 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
950 }
951 }
952
953 /* Parse input from pane. */
954 void
955 input_parse_pane(struct window_pane *wp)
956 {
957 void *new_data;
958 size_t new_size;
959
960 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
961 input_parse_buffer(wp, new_data, new_size);
962 window_pane_update_used_data(wp, &wp->offset, new_size);
963 }
964
965 /* Parse given input. */
966 void
967 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
968 {
969 struct input_ctx *ictx = wp->ictx;
970 struct screen_write_ctx *sctx = &ictx->ctx;
971
972 if (len == 0)
973 return;
974
975 window_update_activity(wp->window);
976 wp->flags |= PANE_CHANGED;
977
978 /* Flag new input while in a mode. */
979 if (!TAILQ_EMPTY(&wp->modes))
980 wp->flags |= PANE_UNSEENCHANGES;
981
982 /* NULL wp if there is a mode set as don't want to update the tty. */
983 if (TAILQ_EMPTY(&wp->modes))
984 screen_write_start_pane(sctx, wp, &wp->base);
985 else
986 screen_write_start(sctx, &wp->base);
987
988 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
989 ictx->state->name, len, (int)len, buf);
990
991 input_parse(ictx, buf, len);
992 screen_write_stop(sctx);
993 }
994
995 /* Parse given input for screen. */
996 void
997 input_parse_screen(struct input_ctx *ictx, struct screen *s,
998 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
999 {
1000 struct screen_write_ctx *sctx = &ictx->ctx;
1001
1002 if (len == 0)
1003 return;
1004
1005 screen_write_start_callback(sctx, s, cb, arg);
1006 input_parse(ictx, buf, len);
1007 screen_write_stop(sctx);
1008 }
1009
1010 /* Split the parameter list (if any). */
1011 static int
1012 input_split(struct input_ctx *ictx)
1013 {
1014 const char *errstr;
1015 char *ptr, *out;
1016 struct input_param *ip;
1017 u_int i;
1018
1019 for (i = 0; i < ictx->param_list_len; i++) {
1020 if (ictx->param_list[i].type == INPUT_STRING)
1021 free(ictx->param_list[i].str);
1022 }
1023 ictx->param_list_len = 0;
1024
1025 if (ictx->param_len == 0)
1026 return (0);
1027 ip = &ictx->param_list[0];
1028
1029 ptr = ictx->param_buf;
1030 while ((out = strsep(&ptr, ";")) != NULL) {
1031 if (*out == '\0')
1032 ip->type = INPUT_MISSING;
1033 else {
1034 if (strchr(out, ':') != NULL) {
1035 ip->type = INPUT_STRING;
1036 ip->str = xstrdup(out);
1037 } else {
1038 ip->type = INPUT_NUMBER;
1039 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1040 if (errstr != NULL)
1041 return (-1);
1042 }
1043 }
1044 ip = &ictx->param_list[++ictx->param_list_len];
1045 if (ictx->param_list_len == nitems(ictx->param_list))
1046 return (-1);
1047 }
1048
1049 for (i = 0; i < ictx->param_list_len; i++) {
1050 ip = &ictx->param_list[i];
1051 if (ip->type == INPUT_MISSING)
1052 log_debug("parameter %u: missing", i);
1053 else if (ip->type == INPUT_STRING)
1054 log_debug("parameter %u: string %s", i, ip->str);
1055 else if (ip->type == INPUT_NUMBER)
1056 log_debug("parameter %u: number %d", i, ip->num);
1057 }
1058
1059 return (0);
1060 }
1061
1062 /* Get an argument or return default value. */
1063 static int
1064 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1065 {
1066 struct input_param *ip;
1067 int retval;
1068
1069 if (validx >= ictx->param_list_len)
1070 return (defval);
1071 ip = &ictx->param_list[validx];
1072 if (ip->type == INPUT_MISSING)
1073 return (defval);
1074 if (ip->type == INPUT_STRING)
1075 return (-1);
1076 retval = ip->num;
1077 if (retval < minval)
1078 return (minval);
1079 return (retval);
1080 }
1081
1082 /* Reply to terminal query. */
1083 static void
1084 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1085 {
1086 struct bufferevent *bev = ictx->event;
1087 va_list ap;
1088 char *reply;
1089
1090 if (bev == NULL)
1091 return;
1092
1093 va_start(ap, fmt);
1094 xvasprintf(&reply, fmt, ap);
1095 va_end(ap);
1096
1097 log_debug("%s: %s", __func__, reply);
1098 bufferevent_write(bev, reply, strlen(reply));
1099 free(reply);
1100 }
1101
1102 /* Clear saved state. */
1103 static void
1104 input_clear(struct input_ctx *ictx)
1105 {
1106 event_del(&ictx->timer);
1107
1108 *ictx->interm_buf = '\0';
1109 ictx->interm_len = 0;
1110
1111 *ictx->param_buf = '\0';
1112 ictx->param_len = 0;
1113
1114 *ictx->input_buf = '\0';
1115 ictx->input_len = 0;
1116
1117 ictx->input_end = INPUT_END_ST;
1118
1119 ictx->flags &= ~INPUT_DISCARD;
1120 }
1121
1122 /* Reset for ground state. */
1123 static void
1124 input_ground(struct input_ctx *ictx)
1125 {
1126 event_del(&ictx->timer);
1127 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1128
1129 if (ictx->input_space > INPUT_BUF_START) {
1130 ictx->input_space = INPUT_BUF_START;
1131 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1132 }
1133 }
1134
1135 /* Output this character to the screen. */
1136 static int
1137 input_print(struct input_ctx *ictx)
1138 {
1139 struct screen_write_ctx *sctx = &ictx->ctx;
1140 int set;
1141
1142 ictx->utf8started = 0; /* can't be valid UTF-8 */
1143
1144 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1145 if (set == 1)
1146 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1147 else
1148 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1149
1150 utf8_set(&ictx->cell.cell.data, ictx->ch);
1151 screen_write_collect_add(sctx, &ictx->cell.cell);
1152 ictx->last = ictx->ch;
1153
1154 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1155
1156 return (0);
1157 }
1158
1159 /* Collect intermediate string. */
1160 static int
1161 input_intermediate(struct input_ctx *ictx)
1162 {
1163 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1164 ictx->flags |= INPUT_DISCARD;
1165 else {
1166 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1167 ictx->interm_buf[ictx->interm_len] = '\0';
1168 }
1169
1170 return (0);
1171 }
1172
1173 /* Collect parameter string. */
1174 static int
1175 input_parameter(struct input_ctx *ictx)
1176 {
1177 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1178 ictx->flags |= INPUT_DISCARD;
1179 else {
1180 ictx->param_buf[ictx->param_len++] = ictx->ch;
1181 ictx->param_buf[ictx->param_len] = '\0';
1182 }
1183
1184 return (0);
1185 }
1186
1187 /* Collect input string. */
1188 static int
1189 input_input(struct input_ctx *ictx)
1190 {
1191 size_t available;
1192
1193 available = ictx->input_space;
1194 while (ictx->input_len + 1 >= available) {
1195 available *= 2;
1196 if (available > INPUT_BUF_LIMIT) {
1197 ictx->flags |= INPUT_DISCARD;
1198 return (0);
1199 }
1200 ictx->input_buf = xrealloc(ictx->input_buf, available);
1201 ictx->input_space = available;
1202 }
1203 ictx->input_buf[ictx->input_len++] = ictx->ch;
1204 ictx->input_buf[ictx->input_len] = '\0';
1205
1206 return (0);
1207 }
1208
1209 /* Execute C0 control sequence. */
1210 static int
1211 input_c0_dispatch(struct input_ctx *ictx)
1212 {
1213 struct screen_write_ctx *sctx = &ictx->ctx;
1214 struct window_pane *wp = ictx->wp;
1215 struct screen *s = sctx->s;
1216
1217 ictx->utf8started = 0; /* can't be valid UTF-8 */
1218
1219 log_debug("%s: '%c'", __func__, ictx->ch);
1220
1221 switch (ictx->ch) {
1222 case '\000': /* NUL */
1223 break;
1224 case '\007': /* BEL */
1225 if (wp != NULL)
1226 alerts_queue(wp->window, WINDOW_BELL);
1227 break;
1228 case '\010': /* BS */
1229 screen_write_backspace(sctx);
1230 break;
1231 case '\011': /* HT */
1232 /* Don't tab beyond the end of the line. */
1233 if (s->cx >= screen_size_x(s) - 1)
1234 break;
1235
1236 /* Find the next tab point, or use the last column if none. */
1237 do {
1238 s->cx++;
1239 if (bit_test(s->tabs, s->cx))
1240 break;
1241 } while (s->cx < screen_size_x(s) - 1);
1242 break;
1243 case '\012': /* LF */
1244 case '\013': /* VT */
1245 case '\014': /* FF */
1246 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1247 if (s->mode & MODE_CRLF)
1248 screen_write_carriagereturn(sctx);
1249 break;
1250 case '\015': /* CR */
1251 screen_write_carriagereturn(sctx);
1252 break;
1253 case '\016': /* SO */
1254 ictx->cell.set = 1;
1255 break;
1256 case '\017': /* SI */
1257 ictx->cell.set = 0;
1258 break;
1259 default:
1260 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1261 break;
1262 }
1263
1264 ictx->last = -1;
1265 return (0);
1266 }
1267
1268 /* Execute escape sequence. */
1269 static int
1270 input_esc_dispatch(struct input_ctx *ictx)
1271 {
1272 struct screen_write_ctx *sctx = &ictx->ctx;
1273 struct screen *s = sctx->s;
1274 struct input_table_entry *entry;
1275
1276 if (ictx->flags & INPUT_DISCARD)
1277 return (0);
1278 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1279
1280 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1281 sizeof input_esc_table[0], input_table_compare);
1282 if (entry == NULL) {
1283 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1284 return (0);
1285 }
1286
1287 switch (entry->type) {
1288 case INPUT_ESC_RIS:
1289 colour_palette_clear(ictx->palette);
1290 input_reset_cell(ictx);
1291 screen_write_reset(sctx);
1292 screen_write_fullredraw(sctx);
1293 break;
1294 case INPUT_ESC_IND:
1295 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1296 break;
1297 case INPUT_ESC_NEL:
1298 screen_write_carriagereturn(sctx);
1299 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1300 break;
1301 case INPUT_ESC_HTS:
1302 if (s->cx < screen_size_x(s))
1303 bit_set(s->tabs, s->cx);
1304 break;
1305 case INPUT_ESC_RI:
1306 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1307 break;
1308 case INPUT_ESC_DECKPAM:
1309 screen_write_mode_set(sctx, MODE_KKEYPAD);
1310 break;
1311 case INPUT_ESC_DECKPNM:
1312 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1313 break;
1314 case INPUT_ESC_DECSC:
1315 input_save_state(ictx);
1316 break;
1317 case INPUT_ESC_DECRC:
1318 input_restore_state(ictx);
1319 break;
1320 case INPUT_ESC_DECALN:
1321 screen_write_alignmenttest(sctx);
1322 break;
1323 case INPUT_ESC_SCSG0_ON:
1324 ictx->cell.g0set = 1;
1325 break;
1326 case INPUT_ESC_SCSG0_OFF:
1327 ictx->cell.g0set = 0;
1328 break;
1329 case INPUT_ESC_SCSG1_ON:
1330 ictx->cell.g1set = 1;
1331 break;
1332 case INPUT_ESC_SCSG1_OFF:
1333 ictx->cell.g1set = 0;
1334 break;
1335 case INPUT_ESC_ST:
1336 /* ST terminates OSC but the state transition already did it. */
1337 break;
1338 }
1339
1340 ictx->last = -1;
1341 return (0);
1342 }
1343
1344 /* Execute control sequence. */
1345 static int
1346 input_csi_dispatch(struct input_ctx *ictx)
1347 {
1348 struct screen_write_ctx *sctx = &ictx->ctx;
1349 struct screen *s = sctx->s;
1350 struct input_table_entry *entry;
1351 int i, n, m;
1352 u_int cx, bg = ictx->cell.cell.bg;
1353
1354 if (ictx->flags & INPUT_DISCARD)
1355 return (0);
1356
1357 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
1358 ictx->interm_buf, ictx->param_buf);
1359
1360 if (input_split(ictx) != 0)
1361 return (0);
1362
1363 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1364 sizeof input_csi_table[0], input_table_compare);
1365 if (entry == NULL) {
1366 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1367 return (0);
1368 }
1369
1370 switch (entry->type) {
1371 case INPUT_CSI_CBT:
1372 /* Find the previous tab point, n times. */
1373 cx = s->cx;
1374 if (cx > screen_size_x(s) - 1)
1375 cx = screen_size_x(s) - 1;
1376 n = input_get(ictx, 0, 1, 1);
1377 if (n == -1)
1378 break;
1379 while (cx > 0 && n-- > 0) {
1380 do
1381 cx--;
1382 while (cx > 0 && !bit_test(s->tabs, cx));
1383 }
1384 s->cx = cx;
1385 break;
1386 case INPUT_CSI_CUB:
1387 n = input_get(ictx, 0, 1, 1);
1388 if (n != -1)
1389 screen_write_cursorleft(sctx, n);
1390 break;
1391 case INPUT_CSI_CUD:
1392 n = input_get(ictx, 0, 1, 1);
1393 if (n != -1)
1394 screen_write_cursordown(sctx, n);
1395 break;
1396 case INPUT_CSI_CUF:
1397 n = input_get(ictx, 0, 1, 1);
1398 if (n != -1)
1399 screen_write_cursorright(sctx, n);
1400 break;
1401 case INPUT_CSI_CUP:
1402 n = input_get(ictx, 0, 1, 1);
1403 m = input_get(ictx, 1, 1, 1);
1404 if (n != -1 && m != -1)
1405 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1406 break;
1407 case INPUT_CSI_MODSET:
1408 n = input_get(ictx, 0, 0, 0);
1409 m = input_get(ictx, 1, 0, 0);
1410 if (options_get_number(global_options, "extended-keys") == 2)
1411 break;
1412 if (n == 0 || (n == 4 && m == 0))
1413 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1414 else if (n == 4 && (m == 1 || m == 2))
1415 screen_write_mode_set(sctx, MODE_KEXTENDED);
1416 break;
1417 case INPUT_CSI_MODOFF:
1418 n = input_get(ictx, 0, 0, 0);
1419 if (n == 4)
1420 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1421 break;
1422 case INPUT_CSI_WINOPS:
1423 input_csi_dispatch_winops(ictx);
1424 break;
1425 case INPUT_CSI_CUU:
1426 n = input_get(ictx, 0, 1, 1);
1427 if (n != -1)
1428 screen_write_cursorup(sctx, n);
1429 break;
1430 case INPUT_CSI_CNL:
1431 n = input_get(ictx, 0, 1, 1);
1432 if (n != -1) {
1433 screen_write_carriagereturn(sctx);
1434 screen_write_cursordown(sctx, n);
1435 }
1436 break;
1437 case INPUT_CSI_CPL:
1438 n = input_get(ictx, 0, 1, 1);
1439 if (n != -1) {
1440 screen_write_carriagereturn(sctx);
1441 screen_write_cursorup(sctx, n);
1442 }
1443 break;
1444 case INPUT_CSI_DA:
1445 switch (input_get(ictx, 0, 0, 0)) {
1446 case -1:
1447 break;
1448 case 0:
1449 input_reply(ictx, "\033[?1;2c");
1450 break;
1451 default:
1452 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1453 break;
1454 }
1455 break;
1456 case INPUT_CSI_DA_TWO:
1457 switch (input_get(ictx, 0, 0, 0)) {
1458 case -1:
1459 break;
1460 case 0:
1461 input_reply(ictx, "\033[>84;0;0c");
1462 break;
1463 default:
1464 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1465 break;
1466 }
1467 break;
1468 case INPUT_CSI_ECH:
1469 n = input_get(ictx, 0, 1, 1);
1470 if (n != -1)
1471 screen_write_clearcharacter(sctx, n, bg);
1472 break;
1473 case INPUT_CSI_DCH:
1474 n = input_get(ictx, 0, 1, 1);
1475 if (n != -1)
1476 screen_write_deletecharacter(sctx, n, bg);
1477 break;
1478 case INPUT_CSI_DECSTBM:
1479 n = input_get(ictx, 0, 1, 1);
1480 m = input_get(ictx, 1, 1, screen_size_y(s));
1481 if (n != -1 && m != -1)
1482 screen_write_scrollregion(sctx, n - 1, m - 1);
1483 break;
1484 case INPUT_CSI_DL:
1485 n = input_get(ictx, 0, 1, 1);
1486 if (n != -1)
1487 screen_write_deleteline(sctx, n, bg);
1488 break;
1489 case INPUT_CSI_DSR:
1490 switch (input_get(ictx, 0, 0, 0)) {
1491 case -1:
1492 break;
1493 case 5:
1494 input_reply(ictx, "\033[0n");
1495 break;
1496 case 6:
1497 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1498 break;
1499 default:
1500 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1501 break;
1502 }
1503 break;
1504 case INPUT_CSI_ED:
1505 switch (input_get(ictx, 0, 0, 0)) {
1506 case -1:
1507 break;
1508 case 0:
1509 screen_write_clearendofscreen(sctx, bg);
1510 break;
1511 case 1:
1512 screen_write_clearstartofscreen(sctx, bg);
1513 break;
1514 case 2:
1515 screen_write_clearscreen(sctx, bg);
1516 break;
1517 case 3:
1518 if (input_get(ictx, 1, 0, 0) == 0) {
1519 /*
1520 * Linux console extension to clear history
1521 * (for example before locking the screen).
1522 */
1523 screen_write_clearhistory(sctx);
1524 }
1525 break;
1526 default:
1527 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1528 break;
1529 }
1530 break;
1531 case INPUT_CSI_EL:
1532 switch (input_get(ictx, 0, 0, 0)) {
1533 case -1:
1534 break;
1535 case 0:
1536 screen_write_clearendofline(sctx, bg);
1537 break;
1538 case 1:
1539 screen_write_clearstartofline(sctx, bg);
1540 break;
1541 case 2:
1542 screen_write_clearline(sctx, bg);
1543 break;
1544 default:
1545 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1546 break;
1547 }
1548 break;
1549 case INPUT_CSI_HPA:
1550 n = input_get(ictx, 0, 1, 1);
1551 if (n != -1)
1552 screen_write_cursormove(sctx, n - 1, -1, 1);
1553 break;
1554 case INPUT_CSI_ICH:
1555 n = input_get(ictx, 0, 1, 1);
1556 if (n != -1)
1557 screen_write_insertcharacter(sctx, n, bg);
1558 break;
1559 case INPUT_CSI_IL:
1560 n = input_get(ictx, 0, 1, 1);
1561 if (n != -1)
1562 screen_write_insertline(sctx, n, bg);
1563 break;
1564 case INPUT_CSI_REP:
1565 n = input_get(ictx, 0, 1, 1);
1566 if (n == -1)
1567 break;
1568
1569 m = screen_size_x(s) - s->cx;
1570 if (n > m)
1571 n = m;
1572
1573 if (ictx->last == -1)
1574 break;
1575 ictx->ch = ictx->last;
1576
1577 for (i = 0; i < n; i++)
1578 input_print(ictx);
1579 break;
1580 case INPUT_CSI_RCP:
1581 input_restore_state(ictx);
1582 break;
1583 case INPUT_CSI_RM:
1584 input_csi_dispatch_rm(ictx);
1585 break;
1586 case INPUT_CSI_RM_PRIVATE:
1587 input_csi_dispatch_rm_private(ictx);
1588 break;
1589 case INPUT_CSI_SCP:
1590 input_save_state(ictx);
1591 break;
1592 case INPUT_CSI_SGR:
1593 input_csi_dispatch_sgr(ictx);
1594 break;
1595 case INPUT_CSI_SM:
1596 input_csi_dispatch_sm(ictx);
1597 break;
1598 case INPUT_CSI_SM_PRIVATE:
1599 input_csi_dispatch_sm_private(ictx);
1600 break;
1601 case INPUT_CSI_SM_GRAPHICS:
1602 input_csi_dispatch_sm_graphics(ictx);
1603 break;
1604 case INPUT_CSI_SU:
1605 n = input_get(ictx, 0, 1, 1);
1606 if (n != -1)
1607 screen_write_scrollup(sctx, n, bg);
1608 break;
1609 case INPUT_CSI_SD:
1610 n = input_get(ictx, 0, 1, 1);
1611 if (n != -1)
1612 screen_write_scrolldown(sctx, n, bg);
1613 break;
1614 case INPUT_CSI_TBC:
1615 switch (input_get(ictx, 0, 0, 0)) {
1616 case -1:
1617 break;
1618 case 0:
1619 if (s->cx < screen_size_x(s))
1620 bit_clear(s->tabs, s->cx);
1621 break;
1622 case 3:
1623 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1624 break;
1625 default:
1626 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1627 break;
1628 }
1629 break;
1630 case INPUT_CSI_VPA:
1631 n = input_get(ictx, 0, 1, 1);
1632 if (n != -1)
1633 screen_write_cursormove(sctx, -1, n - 1, 1);
1634 break;
1635 case INPUT_CSI_DECSCUSR:
1636 n = input_get(ictx, 0, 0, 0);
1637 if (n != -1)
1638 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1639 break;
1640 case INPUT_CSI_XDA:
1641 n = input_get(ictx, 0, 0, 0);
1642 if (n == 0)
1643 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1644 break;
1645
1646 }
1647
1648 ictx->last = -1;
1649 return (0);
1650 }
1651
1652 /* Handle CSI RM. */
1653 static void
1654 input_csi_dispatch_rm(struct input_ctx *ictx)
1655 {
1656 struct screen_write_ctx *sctx = &ictx->ctx;
1657 u_int i;
1658
1659 for (i = 0; i < ictx->param_list_len; i++) {
1660 switch (input_get(ictx, i, 0, -1)) {
1661 case -1:
1662 break;
1663 case 4: /* IRM */
1664 screen_write_mode_clear(sctx, MODE_INSERT);
1665 break;
1666 case 34:
1667 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1668 break;
1669 default:
1670 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1671 break;
1672 }
1673 }
1674 }
1675
1676 /* Handle CSI private RM. */
1677 static void
1678 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1679 {
1680 struct screen_write_ctx *sctx = &ictx->ctx;
1681 struct grid_cell *gc = &ictx->cell.cell;
1682 u_int i;
1683
1684 for (i = 0; i < ictx->param_list_len; i++) {
1685 switch (input_get(ictx, i, 0, -1)) {
1686 case -1:
1687 break;
1688 case 1: /* DECCKM */
1689 screen_write_mode_clear(sctx, MODE_KCURSOR);
1690 break;
1691 case 3: /* DECCOLM */
1692 screen_write_cursormove(sctx, 0, 0, 1);
1693 screen_write_clearscreen(sctx, gc->bg);
1694 break;
1695 case 6: /* DECOM */
1696 screen_write_mode_clear(sctx, MODE_ORIGIN);
1697 screen_write_cursormove(sctx, 0, 0, 1);
1698 break;
1699 case 7: /* DECAWM */
1700 screen_write_mode_clear(sctx, MODE_WRAP);
1701 break;
1702 case 12:
1703 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1704 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1705 break;
1706 case 25: /* TCEM */
1707 screen_write_mode_clear(sctx, MODE_CURSOR);
1708 break;
1709 case 1000:
1710 case 1001:
1711 case 1002:
1712 case 1003:
1713 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1714 break;
1715 case 1004:
1716 screen_write_mode_clear(sctx, MODE_FOCUSON);
1717 break;
1718 case 1005:
1719 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1720 break;
1721 case 1006:
1722 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1723 break;
1724 case 47:
1725 case 1047:
1726 screen_write_alternateoff(sctx, gc, 0);
1727 break;
1728 case 1049:
1729 screen_write_alternateoff(sctx, gc, 1);
1730 break;
1731 case 2004:
1732 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1733 break;
1734 default:
1735 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1736 break;
1737 }
1738 }
1739 }
1740
1741 /* Handle CSI SM. */
1742 static void
1743 input_csi_dispatch_sm(struct input_ctx *ictx)
1744 {
1745 struct screen_write_ctx *sctx = &ictx->ctx;
1746 u_int i;
1747
1748 for (i = 0; i < ictx->param_list_len; i++) {
1749 switch (input_get(ictx, i, 0, -1)) {
1750 case -1:
1751 break;
1752 case 4: /* IRM */
1753 screen_write_mode_set(sctx, MODE_INSERT);
1754 break;
1755 case 34:
1756 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1757 break;
1758 default:
1759 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1760 break;
1761 }
1762 }
1763 }
1764
1765 /* Handle CSI private SM. */
1766 static void
1767 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1768 {
1769 struct screen_write_ctx *sctx = &ictx->ctx;
1770 struct grid_cell *gc = &ictx->cell.cell;
1771 u_int i;
1772
1773 for (i = 0; i < ictx->param_list_len; i++) {
1774 switch (input_get(ictx, i, 0, -1)) {
1775 case -1:
1776 break;
1777 case 1: /* DECCKM */
1778 screen_write_mode_set(sctx, MODE_KCURSOR);
1779 break;
1780 case 3: /* DECCOLM */
1781 screen_write_cursormove(sctx, 0, 0, 1);
1782 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1783 break;
1784 case 6: /* DECOM */
1785 screen_write_mode_set(sctx, MODE_ORIGIN);
1786 screen_write_cursormove(sctx, 0, 0, 1);
1787 break;
1788 case 7: /* DECAWM */
1789 screen_write_mode_set(sctx, MODE_WRAP);
1790 break;
1791 case 12:
1792 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1793 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1794 break;
1795 case 25: /* TCEM */
1796 screen_write_mode_set(sctx, MODE_CURSOR);
1797 break;
1798 case 1000:
1799 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1800 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1801 break;
1802 case 1002:
1803 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1804 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1805 break;
1806 case 1003:
1807 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1808 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1809 break;
1810 case 1004:
1811 screen_write_mode_set(sctx, MODE_FOCUSON);
1812 break;
1813 case 1005:
1814 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1815 break;
1816 case 1006:
1817 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1818 break;
1819 case 47:
1820 case 1047:
1821 screen_write_alternateon(sctx, gc, 0);
1822 break;
1823 case 1049:
1824 screen_write_alternateon(sctx, gc, 1);
1825 break;
1826 case 2004:
1827 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1828 break;
1829 default:
1830 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1831 break;
1832 }
1833 }
1834 }
1835
1836 /* Handle CSI graphics SM. */
1837 static void
1838 input_csi_dispatch_sm_graphics(__unused struct input_ctx *ictx)
1839 {
1840 }
1841
1842 /* Handle CSI window operations. */
1843 static void
1844 input_csi_dispatch_winops(struct input_ctx *ictx)
1845 {
1846 struct screen_write_ctx *sctx = &ictx->ctx;
1847 struct screen *s = sctx->s;
1848 struct window_pane *wp = ictx->wp;
1849 struct window *w = NULL;
1850 u_int x = screen_size_x(s), y = screen_size_y(s);
1851 int n, m;
1852
1853 if (wp != NULL)
1854 w = wp->window;
1855
1856 m = 0;
1857 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1858 switch (n) {
1859 case 1:
1860 case 2:
1861 case 5:
1862 case 6:
1863 case 7:
1864 case 11:
1865 case 13:
1866 case 20:
1867 case 21:
1868 case 24:
1869 break;
1870 case 3:
1871 case 4:
1872 case 8:
1873 m++;
1874 if (input_get(ictx, m, 0, -1) == -1)
1875 return;
1876 /* FALLTHROUGH */
1877 case 9:
1878 case 10:
1879 m++;
1880 if (input_get(ictx, m, 0, -1) == -1)
1881 return;
1882 break;
1883 case 14:
1884 if (w == NULL)
1885 break;
1886 input_reply(ictx, "\033[4;%u;%ut", y * w->ypixel,
1887 x * w->xpixel);
1888 break;
1889 case 15:
1890 if (w == NULL)
1891 break;
1892 input_reply(ictx, "\033[5;%u;%ut", y * w->ypixel,
1893 x * w->xpixel);
1894 break;
1895 case 16:
1896 if (w == NULL)
1897 break;
1898 input_reply(ictx, "\033[6;%u;%ut", w->ypixel,
1899 w->xpixel);
1900 break;
1901 case 18:
1902 input_reply(ictx, "\033[8;%u;%ut", y, x);
1903 break;
1904 case 19:
1905 input_reply(ictx, "\033[9;%u;%ut", y, x);
1906 break;
1907 case 22:
1908 m++;
1909 switch (input_get(ictx, m, 0, -1)) {
1910 case -1:
1911 return;
1912 case 0:
1913 case 2:
1914 screen_push_title(sctx->s);
1915 break;
1916 }
1917 break;
1918 case 23:
1919 m++;
1920 switch (input_get(ictx, m, 0, -1)) {
1921 case -1:
1922 return;
1923 case 0:
1924 case 2:
1925 screen_pop_title(sctx->s);
1926 if (wp == NULL)
1927 break;
1928 notify_pane("pane-title-changed", wp);
1929 server_redraw_window_borders(w);
1930 server_status_window(w);
1931 break;
1932 }
1933 break;
1934 default:
1935 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1936 break;
1937 }
1938 m++;
1939 }
1940 }
1941
1942 /* Helper for 256 colour SGR. */
1943 static int
1944 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1945 {
1946 struct grid_cell *gc = &ictx->cell.cell;
1947
1948 if (c == -1 || c > 255) {
1949 if (fgbg == 38)
1950 gc->fg = 8;
1951 else if (fgbg == 48)
1952 gc->bg = 8;
1953 } else {
1954 if (fgbg == 38)
1955 gc->fg = c | COLOUR_FLAG_256;
1956 else if (fgbg == 48)
1957 gc->bg = c | COLOUR_FLAG_256;
1958 else if (fgbg == 58)
1959 gc->us = c | COLOUR_FLAG_256;
1960 }
1961 return (1);
1962 }
1963
1964 /* Handle CSI SGR for 256 colours. */
1965 static void
1966 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1967 {
1968 int c;
1969
1970 c = input_get(ictx, (*i) + 1, 0, -1);
1971 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1972 (*i)++;
1973 }
1974
1975 /* Helper for RGB colour SGR. */
1976 static int
1977 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1978 int b)
1979 {
1980 struct grid_cell *gc = &ictx->cell.cell;
1981
1982 if (r == -1 || r > 255)
1983 return (0);
1984 if (g == -1 || g > 255)
1985 return (0);
1986 if (b == -1 || b > 255)
1987 return (0);
1988
1989 if (fgbg == 38)
1990 gc->fg = colour_join_rgb(r, g, b);
1991 else if (fgbg == 48)
1992 gc->bg = colour_join_rgb(r, g, b);
1993 else if (fgbg == 58)
1994 gc->us = colour_join_rgb(r, g, b);
1995 return (1);
1996 }
1997
1998 /* Handle CSI SGR for RGB colours. */
1999 static void
2000 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
2001 {
2002 int r, g, b;
2003
2004 r = input_get(ictx, (*i) + 1, 0, -1);
2005 g = input_get(ictx, (*i) + 2, 0, -1);
2006 b = input_get(ictx, (*i) + 3, 0, -1);
2007 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
2008 (*i) += 3;
2009 }
2010
2011 /* Handle CSI SGR with a ISO parameter. */
2012 static void
2013 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
2014 {
2015 struct grid_cell *gc = &ictx->cell.cell;
2016 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
2017 int p[8];
2018 u_int n;
2019 const char *errstr;
2020
2021 for (n = 0; n < nitems(p); n++)
2022 p[n] = -1;
2023 n = 0;
2024
2025 ptr = copy = xstrdup(s);
2026 while ((out = strsep(&ptr, ":")) != NULL) {
2027 if (*out != '\0') {
2028 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
2029 if (errstr != NULL || n == nitems(p)) {
2030 free(copy);
2031 return;
2032 }
2033 } else {
2034 n++;
2035 if (n == nitems(p)) {
2036 free(copy);
2037 return;
2038 }
2039 }
2040 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2041 }
2042 free(copy);
2043
2044 if (n == 0)
2045 return;
2046 if (p[0] == 4) {
2047 if (n != 2)
2048 return;
2049 switch (p[1]) {
2050 case 0:
2051 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2052 break;
2053 case 1:
2054 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2055 gc->attr |= GRID_ATTR_UNDERSCORE;
2056 break;
2057 case 2:
2058 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2059 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2060 break;
2061 case 3:
2062 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2063 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2064 break;
2065 case 4:
2066 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2067 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2068 break;
2069 case 5:
2070 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2071 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2072 break;
2073 }
2074 return;
2075 }
2076 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2077 return;
2078 switch (p[1]) {
2079 case 2:
2080 if (n < 3)
2081 break;
2082 if (n == 5)
2083 i = 2;
2084 else
2085 i = 3;
2086 if (n < i + 3)
2087 break;
2088 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2089 p[i + 2]);
2090 break;
2091 case 5:
2092 if (n < 3)
2093 break;
2094 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2095 break;
2096 }
2097 }
2098
2099 /* Handle CSI SGR. */
2100 static void
2101 input_csi_dispatch_sgr(struct input_ctx *ictx)
2102 {
2103 struct grid_cell *gc = &ictx->cell.cell;
2104 u_int i, link;
2105 int n;
2106
2107 if (ictx->param_list_len == 0) {
2108 memcpy(gc, &grid_default_cell, sizeof *gc);
2109 return;
2110 }
2111
2112 for (i = 0; i < ictx->param_list_len; i++) {
2113 if (ictx->param_list[i].type == INPUT_STRING) {
2114 input_csi_dispatch_sgr_colon(ictx, i);
2115 continue;
2116 }
2117 n = input_get(ictx, i, 0, 0);
2118 if (n == -1)
2119 continue;
2120
2121 if (n == 38 || n == 48 || n == 58) {
2122 i++;
2123 switch (input_get(ictx, i, 0, -1)) {
2124 case 2:
2125 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2126 break;
2127 case 5:
2128 input_csi_dispatch_sgr_256(ictx, n, &i);
2129 break;
2130 }
2131 continue;
2132 }
2133
2134 switch (n) {
2135 case 0:
2136 link = gc->link;
2137 memcpy(gc, &grid_default_cell, sizeof *gc);
2138 gc->link = link;
2139 break;
2140 case 1:
2141 gc->attr |= GRID_ATTR_BRIGHT;
2142 break;
2143 case 2:
2144 gc->attr |= GRID_ATTR_DIM;
2145 break;
2146 case 3:
2147 gc->attr |= GRID_ATTR_ITALICS;
2148 break;
2149 case 4:
2150 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2151 gc->attr |= GRID_ATTR_UNDERSCORE;
2152 break;
2153 case 5:
2154 case 6:
2155 gc->attr |= GRID_ATTR_BLINK;
2156 break;
2157 case 7:
2158 gc->attr |= GRID_ATTR_REVERSE;
2159 break;
2160 case 8:
2161 gc->attr |= GRID_ATTR_HIDDEN;
2162 break;
2163 case 9:
2164 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2165 break;
2166 case 21:
2167 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2168 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2169 break;
2170 case 22:
2171 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2172 break;
2173 case 23:
2174 gc->attr &= ~GRID_ATTR_ITALICS;
2175 break;
2176 case 24:
2177 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2178 break;
2179 case 25:
2180 gc->attr &= ~GRID_ATTR_BLINK;
2181 break;
2182 case 27:
2183 gc->attr &= ~GRID_ATTR_REVERSE;
2184 break;
2185 case 28:
2186 gc->attr &= ~GRID_ATTR_HIDDEN;
2187 break;
2188 case 29:
2189 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2190 break;
2191 case 30:
2192 case 31:
2193 case 32:
2194 case 33:
2195 case 34:
2196 case 35:
2197 case 36:
2198 case 37:
2199 gc->fg = n - 30;
2200 break;
2201 case 39:
2202 gc->fg = 8;
2203 break;
2204 case 40:
2205 case 41:
2206 case 42:
2207 case 43:
2208 case 44:
2209 case 45:
2210 case 46:
2211 case 47:
2212 gc->bg = n - 40;
2213 break;
2214 case 49:
2215 gc->bg = 8;
2216 break;
2217 case 53:
2218 gc->attr |= GRID_ATTR_OVERLINE;
2219 break;
2220 case 55:
2221 gc->attr &= ~GRID_ATTR_OVERLINE;
2222 break;
2223 case 59:
2224 gc->us = 8;
2225 break;
2226 case 90:
2227 case 91:
2228 case 92:
2229 case 93:
2230 case 94:
2231 case 95:
2232 case 96:
2233 case 97:
2234 gc->fg = n;
2235 break;
2236 case 100:
2237 case 101:
2238 case 102:
2239 case 103:
2240 case 104:
2241 case 105:
2242 case 106:
2243 case 107:
2244 gc->bg = n - 10;
2245 break;
2246 }
2247 }
2248 }
2249
2250 /* End of input with BEL. */
2251 static int
2252 input_end_bel(struct input_ctx *ictx)
2253 {
2254 log_debug("%s", __func__);
2255
2256 ictx->input_end = INPUT_END_BEL;
2257
2258 return (0);
2259 }
2260
2261 /* DCS string started. */
2262 static void
2263 input_enter_dcs(struct input_ctx *ictx)
2264 {
2265 log_debug("%s", __func__);
2266
2267 input_clear(ictx);
2268 input_start_timer(ictx);
2269 ictx->last = -1;
2270 }
2271
2272 /* DCS terminator (ST) received. */
2273 static int
2274 input_dcs_dispatch(struct input_ctx *ictx)
2275 {
2276 struct window_pane *wp = ictx->wp;
2277 struct screen_write_ctx *sctx = &ictx->ctx;
2278 u_char *buf = ictx->input_buf;
2279 size_t len = ictx->input_len;
2280 const char prefix[] = "tmux;";
2281 const u_int prefixlen = (sizeof prefix) - 1;
2282 long long allow_passthrough = 0;
2283
2284 if (wp == NULL)
2285 return (0);
2286 if (ictx->flags & INPUT_DISCARD) {
2287 log_debug("%s: %zu bytes (discard)", __func__, len);
2288 return (0);
2289 }
2290 log_debug("%s: %zu bytes", __func__, len);
2291
2292 allow_passthrough = options_get_number(wp->options, "allow-passthrough");
2293 if (!allow_passthrough)
2294 return (0);
2295 log_debug("%s: \"%s\"", __func__, buf);
2296
2297 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2298 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2299 allow_passthrough == 2);
2300 }
2301
2302 return (0);
2303 }
2304
2305 /* OSC string started. */
2306 static void
2307 input_enter_osc(struct input_ctx *ictx)
2308 {
2309 log_debug("%s", __func__);
2310
2311 input_clear(ictx);
2312 input_start_timer(ictx);
2313 ictx->last = -1;
2314 }
2315
2316 /* OSC terminator (ST) received. */
2317 static void
2318 input_exit_osc(struct input_ctx *ictx)
2319 {
2320 struct screen_write_ctx *sctx = &ictx->ctx;
2321 struct window_pane *wp = ictx->wp;
2322 u_char *p = ictx->input_buf;
2323 u_int option;
2324
2325 if (ictx->flags & INPUT_DISCARD)
2326 return;
2327 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2328 return;
2329
2330 log_debug("%s: \"%s\" (end %s)", __func__, p,
2331 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2332
2333 option = 0;
2334 while (*p >= '0' && *p <= '9')
2335 option = option * 10 + *p++ - '0';
2336 if (*p != ';' && *p != '\0')
2337 return;
2338 if (*p == ';')
2339 p++;
2340
2341 switch (option) {
2342 case 0:
2343 case 2:
2344 if (wp != NULL &&
2345 options_get_number(wp->options, "allow-set-title") &&
2346 screen_set_title(sctx->s, p)) {
2347 notify_pane("pane-title-changed", wp);
2348 server_redraw_window_borders(wp->window);
2349 server_status_window(wp->window);
2350 }
2351 break;
2352 case 4:
2353 input_osc_4(ictx, p);
2354 break;
2355 case 7:
2356 if (utf8_isvalid(p)) {
2357 screen_set_path(sctx->s, p);
2358 if (wp != NULL) {
2359 server_redraw_window_borders(wp->window);
2360 server_status_window(wp->window);
2361 }
2362 }
2363 break;
2364 case 8:
2365 input_osc_8(ictx, p);
2366 break;
2367 case 10:
2368 input_osc_10(ictx, p);
2369 break;
2370 case 11:
2371 input_osc_11(ictx, p);
2372 break;
2373 case 12:
2374 input_osc_12(ictx, p);
2375 break;
2376 case 52:
2377 input_osc_52(ictx, p);
2378 break;
2379 case 104:
2380 input_osc_104(ictx, p);
2381 break;
2382 case 110:
2383 input_osc_110(ictx, p);
2384 break;
2385 case 111:
2386 input_osc_111(ictx, p);
2387 break;
2388 case 112:
2389 input_osc_112(ictx, p);
2390 break;
2391 case 133:
2392 input_osc_133(ictx, p);
2393 break;
2394 default:
2395 log_debug("%s: unknown '%u'", __func__, option);
2396 break;
2397 }
2398 }
2399
2400 /* APC string started. */
2401 static void
2402 input_enter_apc(struct input_ctx *ictx)
2403 {
2404 log_debug("%s", __func__);
2405
2406 input_clear(ictx);
2407 input_start_timer(ictx);
2408 ictx->last = -1;
2409 }
2410
2411 /* APC terminator (ST) received. */
2412 static void
2413 input_exit_apc(struct input_ctx *ictx)
2414 {
2415 struct screen_write_ctx *sctx = &ictx->ctx;
2416 struct window_pane *wp = ictx->wp;
2417
2418 if (ictx->flags & INPUT_DISCARD)
2419 return;
2420 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2421
2422 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2423 notify_pane("pane-title-changed", wp);
2424 server_redraw_window_borders(wp->window);
2425 server_status_window(wp->window);
2426 }
2427 }
2428
2429 /* Rename string started. */
2430 static void
2431 input_enter_rename(struct input_ctx *ictx)
2432 {
2433 log_debug("%s", __func__);
2434
2435 input_clear(ictx);
2436 input_start_timer(ictx);
2437 ictx->last = -1;
2438 }
2439
2440 /* Rename terminator (ST) received. */
2441 static void
2442 input_exit_rename(struct input_ctx *ictx)
2443 {
2444 struct window_pane *wp = ictx->wp;
2445 struct window *w;
2446 struct options_entry *o;
2447
2448 if (wp == NULL)
2449 return;
2450 if (ictx->flags & INPUT_DISCARD)
2451 return;
2452 if (!options_get_number(ictx->wp->options, "allow-rename"))
2453 return;
2454 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2455
2456 if (!utf8_isvalid(ictx->input_buf))
2457 return;
2458 w = wp->window;
2459
2460 if (ictx->input_len == 0) {
2461 o = options_get_only(w->options, "automatic-rename");
2462 if (o != NULL)
2463 options_remove_or_default(o, -1, NULL);
2464 if (!options_get_number(w->options, "automatic-rename"))
2465 window_set_name(w, "");
2466 } else {
2467 options_set_number(w->options, "automatic-rename", 0);
2468 window_set_name(w, ictx->input_buf);
2469 }
2470 server_redraw_window_borders(w);
2471 server_status_window(w);
2472 }
2473
2474 /* Open UTF-8 character. */
2475 static int
2476 input_top_bit_set(struct input_ctx *ictx)
2477 {
2478 struct screen_write_ctx *sctx = &ictx->ctx;
2479 struct utf8_data *ud = &ictx->utf8data;
2480
2481 ictx->last = -1;
2482
2483 if (!ictx->utf8started) {
2484 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2485 return (0);
2486 ictx->utf8started = 1;
2487 return (0);
2488 }
2489
2490 switch (utf8_append(ud, ictx->ch)) {
2491 case UTF8_MORE:
2492 return (0);
2493 case UTF8_ERROR:
2494 ictx->utf8started = 0;
2495 return (0);
2496 case UTF8_DONE:
2497 break;
2498 }
2499 ictx->utf8started = 0;
2500
2501 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2502 (int)ud->size, ud->data, ud->width);
2503
2504 utf8_copy(&ictx->cell.cell.data, ud);
2505 screen_write_collect_add(sctx, &ictx->cell.cell);
2506
2507 return (0);
2508 }
2509
2510 /* Reply to a colour request. */
2511 static void
2512 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2513 {
2514 u_char r, g, b;
2515 const char *end;
2516
2517 if (c != -1)
2518 c = colour_force_rgb(c);
2519 if (c == -1)
2520 return;
2521 colour_split_rgb(c, &r, &g, &b);
2522
2523 if (ictx->input_end == INPUT_END_BEL)
2524 end = "\007";
2525 else
2526 end = "\033\\";
2527 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2528 n, r, r, g, g, b, b, end);
2529 }
2530
2531 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2532 static void
2533 input_osc_4(struct input_ctx *ictx, const char *p)
2534 {
2535 char *copy, *s, *next = NULL;
2536 long idx;
2537 int c, bad = 0, redraw = 0;
2538
2539 copy = s = xstrdup(p);
2540 while (s != NULL && *s != '\0') {
2541 idx = strtol(s, &next, 10);
2542 if (*next++ != ';') {
2543 bad = 1;
2544 break;
2545 }
2546 if (idx < 0 || idx >= 256) {
2547 bad = 1;
2548 break;
2549 }
2550
2551 s = strsep(&next, ";");
2552 if (strcmp(s, "?") == 0) {
2553 c = colour_palette_get(ictx->palette, idx);
2554 if (c != -1)
2555 input_osc_colour_reply(ictx, 4, c);
2556 continue;
2557 }
2558 if ((c = colour_parseX11(s)) == -1) {
2559 s = next;
2560 continue;
2561 }
2562 if (colour_palette_set(ictx->palette, idx, c))
2563 redraw = 1;
2564 s = next;
2565 }
2566 if (bad)
2567 log_debug("bad OSC 4: %s", p);
2568 if (redraw)
2569 screen_write_fullredraw(&ictx->ctx);
2570 free(copy);
2571 }
2572
2573 /* Handle the OSC 8 sequence for embedding hyperlinks. */
2574 static void
2575 input_osc_8(struct input_ctx *ictx, const char *p)
2576 {
2577 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2578 struct grid_cell *gc = &ictx->cell.cell;
2579 const char *start, *end, *uri;
2580 char *id = NULL;
2581
2582 for (start = p; (end = strpbrk(start, ":;")) != NULL; start = end + 1) {
2583 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2584 if (id != NULL)
2585 goto bad;
2586 id = xstrndup(start + 3, end - start - 3);
2587 }
2588
2589 /* The first ; is the end of parameters and start of the URI. */
2590 if (*end == ';')
2591 break;
2592 }
2593 if (end == NULL || *end != ';')
2594 goto bad;
2595 uri = end + 1;
2596 if (*uri == '\0') {
2597 gc->link = 0;
2598 free(id);
2599 return;
2600 }
2601 gc->link = hyperlinks_put(hl, uri, id);
2602 if (id == NULL)
2603 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2604 else
2605 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2606 free(id);
2607 return;
2608
2609 bad:
2610 log_debug("bad OSC 8 %s", p);
2611 free(id);
2612 }
2613
2614 /*
2615 * Get a client with a foreground for the pane. There isn't much to choose
2616 * between them so just use the first.
2617 */
2618 static int
2619 input_get_fg_client(struct window_pane *wp)
2620 {
2621 struct window *w = wp->window;
2622 struct client *loop;
2623
2624 TAILQ_FOREACH(loop, &clients, entry) {
2625 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2626 continue;
2627 if (loop->session == NULL || !session_has(loop->session, w))
2628 continue;
2629 if (loop->tty.fg == -1)
2630 continue;
2631 return (loop->tty.fg);
2632 }
2633 return (-1);
2634 }
2635
2636 /* Get a client with a background for the pane. */
2637 static int
2638 input_get_bg_client(struct window_pane *wp)
2639 {
2640 struct window *w = wp->window;
2641 struct client *loop;
2642
2643 TAILQ_FOREACH(loop, &clients, entry) {
2644 if (loop->flags & CLIENT_UNATTACHEDFLAGS)
2645 continue;
2646 if (loop->session == NULL || !session_has(loop->session, w))
2647 continue;
2648 if (loop->tty.bg == -1)
2649 continue;
2650 return (loop->tty.bg);
2651 }
2652 return (-1);
2653 }
2654
2655 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2656 static void
2657 input_osc_10(struct input_ctx *ictx, const char *p)
2658 {
2659 struct window_pane *wp = ictx->wp;
2660 struct grid_cell defaults;
2661 int c;
2662
2663 if (strcmp(p, "?") == 0) {
2664 if (wp == NULL)
2665 return;
2666 tty_default_colours(&defaults, wp);
2667 if (COLOUR_DEFAULT(defaults.fg))
2668 c = input_get_fg_client(wp);
2669 else
2670 c = defaults.fg;
2671 input_osc_colour_reply(ictx, 10, c);
2672 return;
2673 }
2674
2675 if ((c = colour_parseX11(p)) == -1) {
2676 log_debug("bad OSC 10: %s", p);
2677 return;
2678 }
2679 if (ictx->palette != NULL) {
2680 ictx->palette->fg = c;
2681 if (wp != NULL)
2682 wp->flags |= PANE_STYLECHANGED;
2683 screen_write_fullredraw(&ictx->ctx);
2684 }
2685 }
2686
2687 /* Handle the OSC 110 sequence for resetting foreground colour. */
2688 static void
2689 input_osc_110(struct input_ctx *ictx, const char *p)
2690 {
2691 struct window_pane *wp = ictx->wp;
2692
2693 if (*p != '\0')
2694 return;
2695 if (ictx->palette != NULL) {
2696 ictx->palette->fg = 8;
2697 if (wp != NULL)
2698 wp->flags |= PANE_STYLECHANGED;
2699 screen_write_fullredraw(&ictx->ctx);
2700 }
2701 }
2702
2703 /* Handle the OSC 11 sequence for setting and querying background colour. */
2704 static void
2705 input_osc_11(struct input_ctx *ictx, const char *p)
2706 {
2707 struct window_pane *wp = ictx->wp;
2708 struct grid_cell defaults;
2709 int c;
2710
2711 if (strcmp(p, "?") == 0) {
2712 if (wp == NULL)
2713 return;
2714 tty_default_colours(&defaults, wp);
2715 if (COLOUR_DEFAULT(defaults.bg))
2716 c = input_get_bg_client(wp);
2717 else
2718 c = defaults.bg;
2719 input_osc_colour_reply(ictx, 11, c);
2720 return;
2721 }
2722
2723 if ((c = colour_parseX11(p)) == -1) {
2724 log_debug("bad OSC 11: %s", p);
2725 return;
2726 }
2727 if (ictx->palette != NULL) {
2728 ictx->palette->bg = c;
2729 if (wp != NULL)
2730 wp->flags |= PANE_STYLECHANGED;
2731 screen_write_fullredraw(&ictx->ctx);
2732 }
2733 }
2734
2735 /* Handle the OSC 111 sequence for resetting background colour. */
2736 static void
2737 input_osc_111(struct input_ctx *ictx, const char *p)
2738 {
2739 struct window_pane *wp = ictx->wp;
2740
2741 if (*p != '\0')
2742 return;
2743 if (ictx->palette != NULL) {
2744 ictx->palette->bg = 8;
2745 if (wp != NULL)
2746 wp->flags |= PANE_STYLECHANGED;
2747 screen_write_fullredraw(&ictx->ctx);
2748 }
2749 }
2750
2751 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2752 static void
2753 input_osc_12(struct input_ctx *ictx, const char *p)
2754 {
2755 struct window_pane *wp = ictx->wp;
2756 int c;
2757
2758 if (strcmp(p, "?") == 0) {
2759 if (wp != NULL) {
2760 c = ictx->ctx.s->ccolour;
2761 if (c == -1)
2762 c = ictx->ctx.s->default_ccolour;
2763 input_osc_colour_reply(ictx, 12, c);
2764 }
2765 return;
2766 }
2767
2768 if ((c = colour_parseX11(p)) == -1) {
2769 log_debug("bad OSC 12: %s", p);
2770 return;
2771 }
2772 screen_set_cursor_colour(ictx->ctx.s, c);
2773 }
2774
2775 /* Handle the OSC 112 sequence for resetting cursor colour. */
2776 static void
2777 input_osc_112(struct input_ctx *ictx, const char *p)
2778 {
2779 if (*p == '\0') /* no arguments allowed */
2780 screen_set_cursor_colour(ictx->ctx.s, -1);
2781 }
2782
2783 /* Handle the OSC 133 sequence. */
2784 static void
2785 input_osc_133(struct input_ctx *ictx, const char *p)
2786 {
2787 struct grid *gd = ictx->ctx.s->grid;
2788 u_int line = ictx->ctx.s->cy + gd->hsize;
2789 struct grid_line *gl;
2790
2791 if (line > gd->hsize + gd->sy - 1)
2792 return;
2793 gl = grid_get_line(gd, line);
2794
2795 switch (*p) {
2796 case 'A':
2797 gl->flags |= GRID_LINE_START_PROMPT;
2798 break;
2799 case 'C':
2800 gl->flags |= GRID_LINE_START_OUTPUT;
2801 break;
2802 }
2803 }
2804
2805 /* Handle the OSC 52 sequence for setting the clipboard. */
2806 static void
2807 input_osc_52(struct input_ctx *ictx, const char *p)
2808 {
2809 struct window_pane *wp = ictx->wp;
2810 char *end;
2811 const char *buf = NULL;
2812 size_t len = 0;
2813 u_char *out;
2814 int outlen, state;
2815 struct screen_write_ctx ctx;
2816 struct paste_buffer *pb;
2817 const char* allow = "cpqs01234567";
2818 char flags[sizeof "cpqs01234567"] = "";
2819 u_int i, j = 0;
2820
2821 if (wp == NULL)
2822 return;
2823 state = options_get_number(global_options, "set-clipboard");
2824 if (state != 2)
2825 return;
2826
2827 if ((end = strchr(p, ';')) == NULL)
2828 return;
2829 end++;
2830 if (*end == '\0')
2831 return;
2832 log_debug("%s: %s", __func__, end);
2833
2834 for (i = 0; p + i != end; i++) {
2835 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2836 flags[j++] = p[i];
2837 }
2838 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2839
2840 if (strcmp(end, "?") == 0) {
2841 if ((pb = paste_get_top(NULL)) != NULL)
2842 buf = paste_buffer_data(pb, &len);
2843 if (ictx->input_end == INPUT_END_BEL)
2844 input_reply_clipboard(ictx->event, buf, len, "\007");
2845 else
2846 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2847 return;
2848 }
2849
2850 len = (strlen(end) / 4) * 3;
2851 if (len == 0)
2852 return;
2853
2854 out = xmalloc(len);
2855 if ((outlen = b64_pton(end, out, len)) == -1) {
2856 free(out);
2857 return;
2858 }
2859
2860 screen_write_start_pane(&ctx, wp, NULL);
2861 screen_write_setselection(&ctx, flags, out, outlen);
2862 screen_write_stop(&ctx);
2863 notify_pane("pane-set-clipboard", wp);
2864
2865 paste_add(NULL, out, outlen);
2866 }
2867
2868 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2869 static void
2870 input_osc_104(struct input_ctx *ictx, const char *p)
2871 {
2872 char *copy, *s;
2873 long idx;
2874 int bad = 0, redraw = 0;
2875
2876 if (*p == '\0') {
2877 colour_palette_clear(ictx->palette);
2878 screen_write_fullredraw(&ictx->ctx);
2879 return;
2880 }
2881
2882 copy = s = xstrdup(p);
2883 while (*s != '\0') {
2884 idx = strtol(s, &s, 10);
2885 if (*s != '\0' && *s != ';') {
2886 bad = 1;
2887 break;
2888 }
2889 if (idx < 0 || idx >= 256) {
2890 bad = 1;
2891 break;
2892 }
2893 if (colour_palette_set(ictx->palette, idx, -1))
2894 redraw = 1;
2895 if (*s == ';')
2896 s++;
2897 }
2898 if (bad)
2899 log_debug("bad OSC 104: %s", p);
2900 if (redraw)
2901 screen_write_fullredraw(&ictx->ctx);
2902 free(copy);
2903 }
2904
2905 void
2906 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2907 const char *end)
2908 {
2909 char *out = NULL;
2910 int outlen = 0;
2911
2912 if (buf != NULL && len != 0) {
2913 if (len >= ((size_t)INT_MAX * 3 / 4) - 1)
2914 return;
2915 outlen = 4 * ((len + 2) / 3) + 1;
2916 out = xmalloc(outlen);
2917 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2918 free(out);
2919 return;
2920 }
2921 }
2922
2923 bufferevent_write(bev, "\033]52;;", 6);
2924 if (outlen != 0)
2925 bufferevent_write(bev, out, outlen);
2926 bufferevent_write(bev, end, strlen(end));
2927 free(out);
2928 }