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Keep cursor on selected item on menu (useful for blind people), GitHub
[tmux-openbsd.git] / input.c
blobd4ffe78412d806b625b471c1b76df43b5fda0389
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_10(struct input_ctx *, const char *);
139 static void input_osc_11(struct input_ctx *, const char *);
140 static void input_osc_12(struct input_ctx *, const char *);
141 static void input_osc_52(struct input_ctx *, const char *);
142 static void input_osc_104(struct input_ctx *, const char *);
143 static void input_osc_110(struct input_ctx *, const char *);
144 static void input_osc_111(struct input_ctx *, const char *);
145 static void input_osc_112(struct input_ctx *, const char *);
146
147 /* Transition entry/exit handlers. */
148 static void input_clear(struct input_ctx *);
149 static void input_ground(struct input_ctx *);
150 static void input_enter_dcs(struct input_ctx *);
151 static void input_enter_osc(struct input_ctx *);
152 static void input_exit_osc(struct input_ctx *);
153 static void input_enter_apc(struct input_ctx *);
154 static void input_exit_apc(struct input_ctx *);
155 static void input_enter_rename(struct input_ctx *);
156 static void input_exit_rename(struct input_ctx *);
157
158 /* Input state handlers. */
159 static int input_print(struct input_ctx *);
160 static int input_intermediate(struct input_ctx *);
161 static int input_parameter(struct input_ctx *);
162 static int input_input(struct input_ctx *);
163 static int input_c0_dispatch(struct input_ctx *);
164 static int input_esc_dispatch(struct input_ctx *);
165 static int input_csi_dispatch(struct input_ctx *);
166 static void input_csi_dispatch_rm(struct input_ctx *);
167 static void input_csi_dispatch_rm_private(struct input_ctx *);
168 static void input_csi_dispatch_sm(struct input_ctx *);
169 static void input_csi_dispatch_sm_private(struct input_ctx *);
170 static void input_csi_dispatch_winops(struct input_ctx *);
171 static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
172 static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
173 static void input_csi_dispatch_sgr(struct input_ctx *);
174 static int input_dcs_dispatch(struct input_ctx *);
175 static int input_top_bit_set(struct input_ctx *);
176 static int input_end_bel(struct input_ctx *);
177
178 /* Command table comparison function. */
179 static int input_table_compare(const void *, const void *);
180
181 /* Command table entry. */
182 struct input_table_entry {
183 int ch;
184 const char *interm;
185 int type;
186 };
187
188 /* Escape commands. */
189 enum input_esc_type {
190 INPUT_ESC_DECALN,
191 INPUT_ESC_DECKPAM,
192 INPUT_ESC_DECKPNM,
193 INPUT_ESC_DECRC,
194 INPUT_ESC_DECSC,
195 INPUT_ESC_HTS,
196 INPUT_ESC_IND,
197 INPUT_ESC_NEL,
198 INPUT_ESC_RI,
199 INPUT_ESC_RIS,
200 INPUT_ESC_SCSG0_OFF,
201 INPUT_ESC_SCSG0_ON,
202 INPUT_ESC_SCSG1_OFF,
203 INPUT_ESC_SCSG1_ON,
204 INPUT_ESC_ST,
205 };
206
207 /* Escape command table. */
208 static const struct input_table_entry input_esc_table[] = {
209 { '0', "(", INPUT_ESC_SCSG0_ON },
210 { '0', ")", INPUT_ESC_SCSG1_ON },
211 { '7', "", INPUT_ESC_DECSC },
212 { '8', "", INPUT_ESC_DECRC },
213 { '8', "#", INPUT_ESC_DECALN },
214 { '=', "", INPUT_ESC_DECKPAM },
215 { '>', "", INPUT_ESC_DECKPNM },
216 { 'B', "(", INPUT_ESC_SCSG0_OFF },
217 { 'B', ")", INPUT_ESC_SCSG1_OFF },
218 { 'D', "", INPUT_ESC_IND },
219 { 'E', "", INPUT_ESC_NEL },
220 { 'H', "", INPUT_ESC_HTS },
221 { 'M', "", INPUT_ESC_RI },
222 { '\\', "", INPUT_ESC_ST },
223 { 'c', "", INPUT_ESC_RIS },
224 };
225
226 /* Control (CSI) commands. */
227 enum input_csi_type {
228 INPUT_CSI_CBT,
229 INPUT_CSI_CNL,
230 INPUT_CSI_CPL,
231 INPUT_CSI_CUB,
232 INPUT_CSI_CUD,
233 INPUT_CSI_CUF,
234 INPUT_CSI_CUP,
235 INPUT_CSI_CUU,
236 INPUT_CSI_DA,
237 INPUT_CSI_DA_TWO,
238 INPUT_CSI_DCH,
239 INPUT_CSI_DECSCUSR,
240 INPUT_CSI_DECSTBM,
241 INPUT_CSI_DL,
242 INPUT_CSI_DSR,
243 INPUT_CSI_ECH,
244 INPUT_CSI_ED,
245 INPUT_CSI_EL,
246 INPUT_CSI_HPA,
247 INPUT_CSI_ICH,
248 INPUT_CSI_IL,
249 INPUT_CSI_MODOFF,
250 INPUT_CSI_MODSET,
251 INPUT_CSI_RCP,
252 INPUT_CSI_REP,
253 INPUT_CSI_RM,
254 INPUT_CSI_RM_PRIVATE,
255 INPUT_CSI_SCP,
256 INPUT_CSI_SD,
257 INPUT_CSI_SGR,
258 INPUT_CSI_SM,
259 INPUT_CSI_SM_PRIVATE,
260 INPUT_CSI_SU,
261 INPUT_CSI_TBC,
262 INPUT_CSI_VPA,
263 INPUT_CSI_WINOPS,
264 INPUT_CSI_XDA,
265 };
266
267 /* Control (CSI) command table. */
268 static const struct input_table_entry input_csi_table[] = {
269 { '@', "", INPUT_CSI_ICH },
270 { 'A', "", INPUT_CSI_CUU },
271 { 'B', "", INPUT_CSI_CUD },
272 { 'C', "", INPUT_CSI_CUF },
273 { 'D', "", INPUT_CSI_CUB },
274 { 'E', "", INPUT_CSI_CNL },
275 { 'F', "", INPUT_CSI_CPL },
276 { 'G', "", INPUT_CSI_HPA },
277 { 'H', "", INPUT_CSI_CUP },
278 { 'J', "", INPUT_CSI_ED },
279 { 'K', "", INPUT_CSI_EL },
280 { 'L', "", INPUT_CSI_IL },
281 { 'M', "", INPUT_CSI_DL },
282 { 'P', "", INPUT_CSI_DCH },
283 { 'S', "", INPUT_CSI_SU },
284 { 'T', "", INPUT_CSI_SD },
285 { 'X', "", INPUT_CSI_ECH },
286 { 'Z', "", INPUT_CSI_CBT },
287 { '`', "", INPUT_CSI_HPA },
288 { 'b', "", INPUT_CSI_REP },
289 { 'c', "", INPUT_CSI_DA },
290 { 'c', ">", INPUT_CSI_DA_TWO },
291 { 'd', "", INPUT_CSI_VPA },
292 { 'f', "", INPUT_CSI_CUP },
293 { 'g', "", INPUT_CSI_TBC },
294 { 'h', "", INPUT_CSI_SM },
295 { 'h', "?", INPUT_CSI_SM_PRIVATE },
296 { 'l', "", INPUT_CSI_RM },
297 { 'l', "?", INPUT_CSI_RM_PRIVATE },
298 { 'm', "", INPUT_CSI_SGR },
299 { 'm', ">", INPUT_CSI_MODSET },
300 { 'n', "", INPUT_CSI_DSR },
301 { 'n', ">", INPUT_CSI_MODOFF },
302 { 'q', " ", INPUT_CSI_DECSCUSR },
303 { 'q', ">", INPUT_CSI_XDA },
304 { 'r', "", INPUT_CSI_DECSTBM },
305 { 's', "", INPUT_CSI_SCP },
306 { 't', "", INPUT_CSI_WINOPS },
307 { 'u', "", INPUT_CSI_RCP },
308 };
309
310 /* Input transition. */
311 struct input_transition {
312 int first;
313 int last;
314
315 int (*handler)(struct input_ctx *);
316 const struct input_state *state;
317 };
318
319 /* Input state. */
320 struct input_state {
321 const char *name;
322 void (*enter)(struct input_ctx *);
323 void (*exit)(struct input_ctx *);
324 const struct input_transition *transitions;
325 };
326
327 /* State transitions available from all states. */
328 #define INPUT_STATE_ANYWHERE \
329 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
330 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
331 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
332
333 /* Forward declarations of state tables. */
334 static const struct input_transition input_state_ground_table[];
335 static const struct input_transition input_state_esc_enter_table[];
336 static const struct input_transition input_state_esc_intermediate_table[];
337 static const struct input_transition input_state_csi_enter_table[];
338 static const struct input_transition input_state_csi_parameter_table[];
339 static const struct input_transition input_state_csi_intermediate_table[];
340 static const struct input_transition input_state_csi_ignore_table[];
341 static const struct input_transition input_state_dcs_enter_table[];
342 static const struct input_transition input_state_dcs_parameter_table[];
343 static const struct input_transition input_state_dcs_intermediate_table[];
344 static const struct input_transition input_state_dcs_handler_table[];
345 static const struct input_transition input_state_dcs_escape_table[];
346 static const struct input_transition input_state_dcs_ignore_table[];
347 static const struct input_transition input_state_osc_string_table[];
348 static const struct input_transition input_state_apc_string_table[];
349 static const struct input_transition input_state_rename_string_table[];
350 static const struct input_transition input_state_consume_st_table[];
351
352 /* ground state definition. */
353 static const struct input_state input_state_ground = {
354 "ground",
355 input_ground, NULL,
356 input_state_ground_table
357 };
358
359 /* esc_enter state definition. */
360 static const struct input_state input_state_esc_enter = {
361 "esc_enter",
362 input_clear, NULL,
363 input_state_esc_enter_table
364 };
365
366 /* esc_intermediate state definition. */
367 static const struct input_state input_state_esc_intermediate = {
368 "esc_intermediate",
369 NULL, NULL,
370 input_state_esc_intermediate_table
371 };
372
373 /* csi_enter state definition. */
374 static const struct input_state input_state_csi_enter = {
375 "csi_enter",
376 input_clear, NULL,
377 input_state_csi_enter_table
378 };
379
380 /* csi_parameter state definition. */
381 static const struct input_state input_state_csi_parameter = {
382 "csi_parameter",
383 NULL, NULL,
384 input_state_csi_parameter_table
385 };
386
387 /* csi_intermediate state definition. */
388 static const struct input_state input_state_csi_intermediate = {
389 "csi_intermediate",
390 NULL, NULL,
391 input_state_csi_intermediate_table
392 };
393
394 /* csi_ignore state definition. */
395 static const struct input_state input_state_csi_ignore = {
396 "csi_ignore",
397 NULL, NULL,
398 input_state_csi_ignore_table
399 };
400
401 /* dcs_enter state definition. */
402 static const struct input_state input_state_dcs_enter = {
403 "dcs_enter",
404 input_enter_dcs, NULL,
405 input_state_dcs_enter_table
406 };
407
408 /* dcs_parameter state definition. */
409 static const struct input_state input_state_dcs_parameter = {
410 "dcs_parameter",
411 NULL, NULL,
412 input_state_dcs_parameter_table
413 };
414
415 /* dcs_intermediate state definition. */
416 static const struct input_state input_state_dcs_intermediate = {
417 "dcs_intermediate",
418 NULL, NULL,
419 input_state_dcs_intermediate_table
420 };
421
422 /* dcs_handler state definition. */
423 static const struct input_state input_state_dcs_handler = {
424 "dcs_handler",
425 NULL, NULL,
426 input_state_dcs_handler_table
427 };
428
429 /* dcs_escape state definition. */
430 static const struct input_state input_state_dcs_escape = {
431 "dcs_escape",
432 NULL, NULL,
433 input_state_dcs_escape_table
434 };
435
436 /* dcs_ignore state definition. */
437 static const struct input_state input_state_dcs_ignore = {
438 "dcs_ignore",
439 NULL, NULL,
440 input_state_dcs_ignore_table
441 };
442
443 /* osc_string state definition. */
444 static const struct input_state input_state_osc_string = {
445 "osc_string",
446 input_enter_osc, input_exit_osc,
447 input_state_osc_string_table
448 };
449
450 /* apc_string state definition. */
451 static const struct input_state input_state_apc_string = {
452 "apc_string",
453 input_enter_apc, input_exit_apc,
454 input_state_apc_string_table
455 };
456
457 /* rename_string state definition. */
458 static const struct input_state input_state_rename_string = {
459 "rename_string",
460 input_enter_rename, input_exit_rename,
461 input_state_rename_string_table
462 };
463
464 /* consume_st state definition. */
465 static const struct input_state input_state_consume_st = {
466 "consume_st",
467 input_enter_rename, NULL, /* rename also waits for ST */
468 input_state_consume_st_table
469 };
470
471 /* ground state table. */
472 static const struct input_transition input_state_ground_table[] = {
473 INPUT_STATE_ANYWHERE,
474
475 { 0x00, 0x17, input_c0_dispatch, NULL },
476 { 0x19, 0x19, input_c0_dispatch, NULL },
477 { 0x1c, 0x1f, input_c0_dispatch, NULL },
478 { 0x20, 0x7e, input_print, NULL },
479 { 0x7f, 0x7f, NULL, NULL },
480 { 0x80, 0xff, input_top_bit_set, NULL },
481
482 { -1, -1, NULL, NULL }
483 };
484
485 /* esc_enter state table. */
486 static const struct input_transition input_state_esc_enter_table[] = {
487 INPUT_STATE_ANYWHERE,
488
489 { 0x00, 0x17, input_c0_dispatch, NULL },
490 { 0x19, 0x19, input_c0_dispatch, NULL },
491 { 0x1c, 0x1f, input_c0_dispatch, NULL },
492 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
493 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
494 { 0x50, 0x50, NULL, &input_state_dcs_enter },
495 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
496 { 0x58, 0x58, NULL, &input_state_consume_st },
497 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
498 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
499 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
500 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
501 { 0x5d, 0x5d, NULL, &input_state_osc_string },
502 { 0x5e, 0x5e, NULL, &input_state_consume_st },
503 { 0x5f, 0x5f, NULL, &input_state_apc_string },
504 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
505 { 0x6b, 0x6b, NULL, &input_state_rename_string },
506 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
507 { 0x7f, 0xff, NULL, NULL },
508
509 { -1, -1, NULL, NULL }
510 };
511
512 /* esc_intermediate state table. */
513 static const struct input_transition input_state_esc_intermediate_table[] = {
514 INPUT_STATE_ANYWHERE,
515
516 { 0x00, 0x17, input_c0_dispatch, NULL },
517 { 0x19, 0x19, input_c0_dispatch, NULL },
518 { 0x1c, 0x1f, input_c0_dispatch, NULL },
519 { 0x20, 0x2f, input_intermediate, NULL },
520 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
521 { 0x7f, 0xff, NULL, NULL },
522
523 { -1, -1, NULL, NULL }
524 };
525
526 /* csi_enter state table. */
527 static const struct input_transition input_state_csi_enter_table[] = {
528 INPUT_STATE_ANYWHERE,
529
530 { 0x00, 0x17, input_c0_dispatch, NULL },
531 { 0x19, 0x19, input_c0_dispatch, NULL },
532 { 0x1c, 0x1f, input_c0_dispatch, NULL },
533 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
534 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
535 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
536 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
537 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
538 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
539 { 0x7f, 0xff, NULL, NULL },
540
541 { -1, -1, NULL, NULL }
542 };
543
544 /* csi_parameter state table. */
545 static const struct input_transition input_state_csi_parameter_table[] = {
546 INPUT_STATE_ANYWHERE,
547
548 { 0x00, 0x17, input_c0_dispatch, NULL },
549 { 0x19, 0x19, input_c0_dispatch, NULL },
550 { 0x1c, 0x1f, input_c0_dispatch, NULL },
551 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
552 { 0x30, 0x39, input_parameter, NULL },
553 { 0x3a, 0x3a, input_parameter, NULL },
554 { 0x3b, 0x3b, input_parameter, NULL },
555 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
556 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
557 { 0x7f, 0xff, NULL, NULL },
558
559 { -1, -1, NULL, NULL }
560 };
561
562 /* csi_intermediate state table. */
563 static const struct input_transition input_state_csi_intermediate_table[] = {
564 INPUT_STATE_ANYWHERE,
565
566 { 0x00, 0x17, input_c0_dispatch, NULL },
567 { 0x19, 0x19, input_c0_dispatch, NULL },
568 { 0x1c, 0x1f, input_c0_dispatch, NULL },
569 { 0x20, 0x2f, input_intermediate, NULL },
570 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
571 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
572 { 0x7f, 0xff, NULL, NULL },
573
574 { -1, -1, NULL, NULL }
575 };
576
577 /* csi_ignore state table. */
578 static const struct input_transition input_state_csi_ignore_table[] = {
579 INPUT_STATE_ANYWHERE,
580
581 { 0x00, 0x17, input_c0_dispatch, NULL },
582 { 0x19, 0x19, input_c0_dispatch, NULL },
583 { 0x1c, 0x1f, input_c0_dispatch, NULL },
584 { 0x20, 0x3f, NULL, NULL },
585 { 0x40, 0x7e, NULL, &input_state_ground },
586 { 0x7f, 0xff, NULL, NULL },
587
588 { -1, -1, NULL, NULL }
589 };
590
591 /* dcs_enter state table. */
592 static const struct input_transition input_state_dcs_enter_table[] = {
593 INPUT_STATE_ANYWHERE,
594
595 { 0x00, 0x17, NULL, NULL },
596 { 0x19, 0x19, NULL, NULL },
597 { 0x1c, 0x1f, NULL, NULL },
598 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
599 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
600 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
601 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
602 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
603 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
604 { 0x7f, 0xff, NULL, NULL },
605
606 { -1, -1, NULL, NULL }
607 };
608
609 /* dcs_parameter state table. */
610 static const struct input_transition input_state_dcs_parameter_table[] = {
611 INPUT_STATE_ANYWHERE,
612
613 { 0x00, 0x17, NULL, NULL },
614 { 0x19, 0x19, NULL, NULL },
615 { 0x1c, 0x1f, NULL, NULL },
616 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
617 { 0x30, 0x39, input_parameter, NULL },
618 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
619 { 0x3b, 0x3b, input_parameter, NULL },
620 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
621 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
622 { 0x7f, 0xff, NULL, NULL },
623
624 { -1, -1, NULL, NULL }
625 };
626
627 /* dcs_intermediate state table. */
628 static const struct input_transition input_state_dcs_intermediate_table[] = {
629 INPUT_STATE_ANYWHERE,
630
631 { 0x00, 0x17, NULL, NULL },
632 { 0x19, 0x19, NULL, NULL },
633 { 0x1c, 0x1f, NULL, NULL },
634 { 0x20, 0x2f, input_intermediate, NULL },
635 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
636 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
637 { 0x7f, 0xff, NULL, NULL },
638
639 { -1, -1, NULL, NULL }
640 };
641
642 /* dcs_handler state table. */
643 static const struct input_transition input_state_dcs_handler_table[] = {
644 /* No INPUT_STATE_ANYWHERE */
645
646 { 0x00, 0x1a, input_input, NULL },
647 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
648 { 0x1c, 0xff, input_input, NULL },
649
650 { -1, -1, NULL, NULL }
651 };
652
653 /* dcs_escape state table. */
654 static const struct input_transition input_state_dcs_escape_table[] = {
655 /* No INPUT_STATE_ANYWHERE */
656
657 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
658 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
659 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
660
661 { -1, -1, NULL, NULL }
662 };
663
664 /* dcs_ignore state table. */
665 static const struct input_transition input_state_dcs_ignore_table[] = {
666 INPUT_STATE_ANYWHERE,
667
668 { 0x00, 0x17, NULL, NULL },
669 { 0x19, 0x19, NULL, NULL },
670 { 0x1c, 0x1f, NULL, NULL },
671 { 0x20, 0xff, NULL, NULL },
672
673 { -1, -1, NULL, NULL }
674 };
675
676 /* osc_string state table. */
677 static const struct input_transition input_state_osc_string_table[] = {
678 INPUT_STATE_ANYWHERE,
679
680 { 0x00, 0x06, NULL, NULL },
681 { 0x07, 0x07, input_end_bel, &input_state_ground },
682 { 0x08, 0x17, NULL, NULL },
683 { 0x19, 0x19, NULL, NULL },
684 { 0x1c, 0x1f, NULL, NULL },
685 { 0x20, 0xff, input_input, NULL },
686
687 { -1, -1, NULL, NULL }
688 };
689
690 /* apc_string state table. */
691 static const struct input_transition input_state_apc_string_table[] = {
692 INPUT_STATE_ANYWHERE,
693
694 { 0x00, 0x17, NULL, NULL },
695 { 0x19, 0x19, NULL, NULL },
696 { 0x1c, 0x1f, NULL, NULL },
697 { 0x20, 0xff, input_input, NULL },
698
699 { -1, -1, NULL, NULL }
700 };
701
702 /* rename_string state table. */
703 static const struct input_transition input_state_rename_string_table[] = {
704 INPUT_STATE_ANYWHERE,
705
706 { 0x00, 0x17, NULL, NULL },
707 { 0x19, 0x19, NULL, NULL },
708 { 0x1c, 0x1f, NULL, NULL },
709 { 0x20, 0xff, input_input, NULL },
710
711 { -1, -1, NULL, NULL }
712 };
713
714 /* consume_st state table. */
715 static const struct input_transition input_state_consume_st_table[] = {
716 INPUT_STATE_ANYWHERE,
717
718 { 0x00, 0x17, NULL, NULL },
719 { 0x19, 0x19, NULL, NULL },
720 { 0x1c, 0x1f, NULL, NULL },
721 { 0x20, 0xff, NULL, NULL },
722
723 { -1, -1, NULL, NULL }
724 };
725
726 /* Input table compare. */
727 static int
728 input_table_compare(const void *key, const void *value)
729 {
730 const struct input_ctx *ictx = key;
731 const struct input_table_entry *entry = value;
732
733 if (ictx->ch != entry->ch)
734 return (ictx->ch - entry->ch);
735 return (strcmp(ictx->interm_buf, entry->interm));
736 }
737
738 /*
739 * Timer - if this expires then have been waiting for a terminator for too
740 * long, so reset to ground.
741 */
742 static void
743 input_timer_callback(__unused int fd, __unused short events, void *arg)
744 {
745 struct input_ctx *ictx = arg;
746
747 log_debug("%s: %s expired" , __func__, ictx->state->name);
748 input_reset(ictx, 0);
749 }
750
751 /* Start the timer. */
752 static void
753 input_start_timer(struct input_ctx *ictx)
754 {
755 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
756
757 event_del(&ictx->timer);
758 event_add(&ictx->timer, &tv);
759 }
760
761 /* Reset cell state to default. */
762 static void
763 input_reset_cell(struct input_ctx *ictx)
764 {
765 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
766 ictx->cell.set = 0;
767 ictx->cell.g0set = ictx->cell.g1set = 0;
768
769 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
770 ictx->old_cx = 0;
771 ictx->old_cy = 0;
772 }
773
774 /* Save screen state. */
775 static void
776 input_save_state(struct input_ctx *ictx)
777 {
778 struct screen_write_ctx *sctx = &ictx->ctx;
779 struct screen *s = sctx->s;
780
781 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
782 ictx->old_cx = s->cx;
783 ictx->old_cy = s->cy;
784 ictx->old_mode = s->mode;
785 }
786
787 /* Restore screen state. */
788 static void
789 input_restore_state(struct input_ctx *ictx)
790 {
791 struct screen_write_ctx *sctx = &ictx->ctx;
792
793 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
794 if (ictx->old_mode & MODE_ORIGIN)
795 screen_write_mode_set(sctx, MODE_ORIGIN);
796 else
797 screen_write_mode_clear(sctx, MODE_ORIGIN);
798 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
799 }
800
801 /* Initialise input parser. */
802 struct input_ctx *
803 input_init(struct window_pane *wp, struct bufferevent *bev,
804 struct colour_palette *palette)
805 {
806 struct input_ctx *ictx;
807
808 ictx = xcalloc(1, sizeof *ictx);
809 ictx->wp = wp;
810 ictx->event = bev;
811 ictx->palette = palette;
812
813 ictx->input_space = INPUT_BUF_START;
814 ictx->input_buf = xmalloc(INPUT_BUF_START);
815
816 ictx->since_ground = evbuffer_new();
817 if (ictx->since_ground == NULL)
818 fatalx("out of memory");
819
820 evtimer_set(&ictx->timer, input_timer_callback, ictx);
821
822 input_reset(ictx, 0);
823 return (ictx);
824 }
825
826 /* Destroy input parser. */
827 void
828 input_free(struct input_ctx *ictx)
829 {
830 u_int i;
831
832 for (i = 0; i < ictx->param_list_len; i++) {
833 if (ictx->param_list[i].type == INPUT_STRING)
834 free(ictx->param_list[i].str);
835 }
836
837 event_del(&ictx->timer);
838
839 free(ictx->input_buf);
840 evbuffer_free(ictx->since_ground);
841
842 free(ictx);
843 }
844
845 /* Reset input state and clear screen. */
846 void
847 input_reset(struct input_ctx *ictx, int clear)
848 {
849 struct screen_write_ctx *sctx = &ictx->ctx;
850 struct window_pane *wp = ictx->wp;
851
852 input_reset_cell(ictx);
853
854 if (clear && wp != NULL) {
855 if (TAILQ_EMPTY(&wp->modes))
856 screen_write_start_pane(sctx, wp, &wp->base);
857 else
858 screen_write_start(sctx, &wp->base);
859 screen_write_reset(sctx);
860 screen_write_stop(sctx);
861 }
862
863 input_clear(ictx);
864
865 ictx->last = -1;
866
867 ictx->state = &input_state_ground;
868 ictx->flags = 0;
869 }
870
871 /* Return pending data. */
872 struct evbuffer *
873 input_pending(struct input_ctx *ictx)
874 {
875 return (ictx->since_ground);
876 }
877
878 /* Change input state. */
879 static void
880 input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
881 {
882 if (ictx->state->exit != NULL)
883 ictx->state->exit(ictx);
884 ictx->state = itr->state;
885 if (ictx->state->enter != NULL)
886 ictx->state->enter(ictx);
887 }
888
889 /* Parse data. */
890 static void
891 input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
892 {
893 struct screen_write_ctx *sctx = &ictx->ctx;
894 const struct input_state *state = NULL;
895 const struct input_transition *itr = NULL;
896 size_t off = 0;
897
898 /* Parse the input. */
899 while (off < len) {
900 ictx->ch = buf[off++];
901
902 /* Find the transition. */
903 if (ictx->state != state ||
904 itr == NULL ||
905 ictx->ch < itr->first ||
906 ictx->ch > itr->last) {
907 itr = ictx->state->transitions;
908 while (itr->first != -1 && itr->last != -1) {
909 if (ictx->ch >= itr->first &&
910 ictx->ch <= itr->last)
911 break;
912 itr++;
913 }
914 if (itr->first == -1 || itr->last == -1) {
915 /* No transition? Eh? */
916 fatalx("no transition from state");
917 }
918 }
919 state = ictx->state;
920
921 /*
922 * Any state except print stops the current collection. This is
923 * an optimization to avoid checking if the attributes have
924 * changed for every character. It will stop unnecessarily for
925 * sequences that don't make a terminal change, but they should
926 * be the minority.
927 */
928 if (itr->handler != input_print)
929 screen_write_collect_end(sctx);
930
931 /*
932 * Execute the handler, if any. Don't switch state if it
933 * returns non-zero.
934 */
935 if (itr->handler != NULL && itr->handler(ictx) != 0)
936 continue;
937
938 /* And switch state, if necessary. */
939 if (itr->state != NULL)
940 input_set_state(ictx, itr);
941
942 /* If not in ground state, save input. */
943 if (ictx->state != &input_state_ground)
944 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
945 }
946 }
947
948 /* Parse input from pane. */
949 void
950 input_parse_pane(struct window_pane *wp)
951 {
952 void *new_data;
953 size_t new_size;
954
955 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
956 input_parse_buffer(wp, new_data, new_size);
957 window_pane_update_used_data(wp, &wp->offset, new_size);
958 }
959
960 /* Parse given input. */
961 void
962 input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
963 {
964 struct input_ctx *ictx = wp->ictx;
965 struct screen_write_ctx *sctx = &ictx->ctx;
966
967 if (len == 0)
968 return;
969
970 window_update_activity(wp->window);
971 wp->flags |= PANE_CHANGED;
972
973 /* NULL wp if there is a mode set as don't want to update the tty. */
974 if (TAILQ_EMPTY(&wp->modes))
975 screen_write_start_pane(sctx, wp, &wp->base);
976 else
977 screen_write_start(sctx, &wp->base);
978
979 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
980 ictx->state->name, len, (int)len, buf);
981
982 input_parse(ictx, buf, len);
983 screen_write_stop(sctx);
984 }
985
986 /* Parse given input for screen. */
987 void
988 input_parse_screen(struct input_ctx *ictx, struct screen *s,
989 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
990 {
991 struct screen_write_ctx *sctx = &ictx->ctx;
992
993 if (len == 0)
994 return;
995
996 screen_write_start_callback(sctx, s, cb, arg);
997 input_parse(ictx, buf, len);
998 screen_write_stop(sctx);
999 }
1000
1001 /* Split the parameter list (if any). */
1002 static int
1003 input_split(struct input_ctx *ictx)
1004 {
1005 const char *errstr;
1006 char *ptr, *out;
1007 struct input_param *ip;
1008 u_int i;
1009
1010 for (i = 0; i < ictx->param_list_len; i++) {
1011 if (ictx->param_list[i].type == INPUT_STRING)
1012 free(ictx->param_list[i].str);
1013 }
1014 ictx->param_list_len = 0;
1015
1016 if (ictx->param_len == 0)
1017 return (0);
1018 ip = &ictx->param_list[0];
1019
1020 ptr = ictx->param_buf;
1021 while ((out = strsep(&ptr, ";")) != NULL) {
1022 if (*out == '\0')
1023 ip->type = INPUT_MISSING;
1024 else {
1025 if (strchr(out, ':') != NULL) {
1026 ip->type = INPUT_STRING;
1027 ip->str = xstrdup(out);
1028 } else {
1029 ip->type = INPUT_NUMBER;
1030 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1031 if (errstr != NULL)
1032 return (-1);
1033 }
1034 }
1035 ip = &ictx->param_list[++ictx->param_list_len];
1036 if (ictx->param_list_len == nitems(ictx->param_list))
1037 return (-1);
1038 }
1039
1040 for (i = 0; i < ictx->param_list_len; i++) {
1041 ip = &ictx->param_list[i];
1042 if (ip->type == INPUT_MISSING)
1043 log_debug("parameter %u: missing", i);
1044 else if (ip->type == INPUT_STRING)
1045 log_debug("parameter %u: string %s", i, ip->str);
1046 else if (ip->type == INPUT_NUMBER)
1047 log_debug("parameter %u: number %d", i, ip->num);
1048 }
1049
1050 return (0);
1051 }
1052
1053 /* Get an argument or return default value. */
1054 static int
1055 input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1056 {
1057 struct input_param *ip;
1058 int retval;
1059
1060 if (validx >= ictx->param_list_len)
1061 return (defval);
1062 ip = &ictx->param_list[validx];
1063 if (ip->type == INPUT_MISSING)
1064 return (defval);
1065 if (ip->type == INPUT_STRING)
1066 return (-1);
1067 retval = ip->num;
1068 if (retval < minval)
1069 return (minval);
1070 return (retval);
1071 }
1072
1073 /* Reply to terminal query. */
1074 static void
1075 input_reply(struct input_ctx *ictx, const char *fmt, ...)
1076 {
1077 struct bufferevent *bev = ictx->event;
1078 va_list ap;
1079 char *reply;
1080
1081 if (bev == NULL)
1082 return;
1083
1084 va_start(ap, fmt);
1085 xvasprintf(&reply, fmt, ap);
1086 va_end(ap);
1087
1088 bufferevent_write(bev, reply, strlen(reply));
1089 free(reply);
1090 }
1091
1092 /* Clear saved state. */
1093 static void
1094 input_clear(struct input_ctx *ictx)
1095 {
1096 event_del(&ictx->timer);
1097
1098 *ictx->interm_buf = '\0';
1099 ictx->interm_len = 0;
1100
1101 *ictx->param_buf = '\0';
1102 ictx->param_len = 0;
1103
1104 *ictx->input_buf = '\0';
1105 ictx->input_len = 0;
1106
1107 ictx->input_end = INPUT_END_ST;
1108
1109 ictx->flags &= ~INPUT_DISCARD;
1110 }
1111
1112 /* Reset for ground state. */
1113 static void
1114 input_ground(struct input_ctx *ictx)
1115 {
1116 event_del(&ictx->timer);
1117 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1118
1119 if (ictx->input_space > INPUT_BUF_START) {
1120 ictx->input_space = INPUT_BUF_START;
1121 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1122 }
1123 }
1124
1125 /* Output this character to the screen. */
1126 static int
1127 input_print(struct input_ctx *ictx)
1128 {
1129 struct screen_write_ctx *sctx = &ictx->ctx;
1130 int set;
1131
1132 ictx->utf8started = 0; /* can't be valid UTF-8 */
1133
1134 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1135 if (set == 1)
1136 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1137 else
1138 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1139
1140 utf8_set(&ictx->cell.cell.data, ictx->ch);
1141 screen_write_collect_add(sctx, &ictx->cell.cell);
1142 ictx->last = ictx->ch;
1143
1144 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1145
1146 return (0);
1147 }
1148
1149 /* Collect intermediate string. */
1150 static int
1151 input_intermediate(struct input_ctx *ictx)
1152 {
1153 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1154 ictx->flags |= INPUT_DISCARD;
1155 else {
1156 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1157 ictx->interm_buf[ictx->interm_len] = '\0';
1158 }
1159
1160 return (0);
1161 }
1162
1163 /* Collect parameter string. */
1164 static int
1165 input_parameter(struct input_ctx *ictx)
1166 {
1167 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1168 ictx->flags |= INPUT_DISCARD;
1169 else {
1170 ictx->param_buf[ictx->param_len++] = ictx->ch;
1171 ictx->param_buf[ictx->param_len] = '\0';
1172 }
1173
1174 return (0);
1175 }
1176
1177 /* Collect input string. */
1178 static int
1179 input_input(struct input_ctx *ictx)
1180 {
1181 size_t available;
1182
1183 available = ictx->input_space;
1184 while (ictx->input_len + 1 >= available) {
1185 available *= 2;
1186 if (available > INPUT_BUF_LIMIT) {
1187 ictx->flags |= INPUT_DISCARD;
1188 return (0);
1189 }
1190 ictx->input_buf = xrealloc(ictx->input_buf, available);
1191 ictx->input_space = available;
1192 }
1193 ictx->input_buf[ictx->input_len++] = ictx->ch;
1194 ictx->input_buf[ictx->input_len] = '\0';
1195
1196 return (0);
1197 }
1198
1199 /* Execute C0 control sequence. */
1200 static int
1201 input_c0_dispatch(struct input_ctx *ictx)
1202 {
1203 struct screen_write_ctx *sctx = &ictx->ctx;
1204 struct window_pane *wp = ictx->wp;
1205 struct screen *s = sctx->s;
1206
1207 ictx->utf8started = 0; /* can't be valid UTF-8 */
1208
1209 log_debug("%s: '%c'", __func__, ictx->ch);
1210
1211 switch (ictx->ch) {
1212 case '\000': /* NUL */
1213 break;
1214 case '\007': /* BEL */
1215 if (wp != NULL)
1216 alerts_queue(wp->window, WINDOW_BELL);
1217 break;
1218 case '\010': /* BS */
1219 screen_write_backspace(sctx);
1220 break;
1221 case '\011': /* HT */
1222 /* Don't tab beyond the end of the line. */
1223 if (s->cx >= screen_size_x(s) - 1)
1224 break;
1225
1226 /* Find the next tab point, or use the last column if none. */
1227 do {
1228 s->cx++;
1229 if (bit_test(s->tabs, s->cx))
1230 break;
1231 } while (s->cx < screen_size_x(s) - 1);
1232 break;
1233 case '\012': /* LF */
1234 case '\013': /* VT */
1235 case '\014': /* FF */
1236 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1237 if (s->mode & MODE_CRLF)
1238 screen_write_carriagereturn(sctx);
1239 break;
1240 case '\015': /* CR */
1241 screen_write_carriagereturn(sctx);
1242 break;
1243 case '\016': /* SO */
1244 ictx->cell.set = 1;
1245 break;
1246 case '\017': /* SI */
1247 ictx->cell.set = 0;
1248 break;
1249 default:
1250 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1251 break;
1252 }
1253
1254 ictx->last = -1;
1255 return (0);
1256 }
1257
1258 /* Execute escape sequence. */
1259 static int
1260 input_esc_dispatch(struct input_ctx *ictx)
1261 {
1262 struct screen_write_ctx *sctx = &ictx->ctx;
1263 struct screen *s = sctx->s;
1264 struct input_table_entry *entry;
1265
1266 if (ictx->flags & INPUT_DISCARD)
1267 return (0);
1268 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1269
1270 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1271 sizeof input_esc_table[0], input_table_compare);
1272 if (entry == NULL) {
1273 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1274 return (0);
1275 }
1276
1277 switch (entry->type) {
1278 case INPUT_ESC_RIS:
1279 colour_palette_clear(ictx->palette);
1280 input_reset_cell(ictx);
1281 screen_write_reset(sctx);
1282 screen_write_fullredraw(sctx);
1283 break;
1284 case INPUT_ESC_IND:
1285 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1286 break;
1287 case INPUT_ESC_NEL:
1288 screen_write_carriagereturn(sctx);
1289 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1290 break;
1291 case INPUT_ESC_HTS:
1292 if (s->cx < screen_size_x(s))
1293 bit_set(s->tabs, s->cx);
1294 break;
1295 case INPUT_ESC_RI:
1296 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1297 break;
1298 case INPUT_ESC_DECKPAM:
1299 screen_write_mode_set(sctx, MODE_KKEYPAD);
1300 break;
1301 case INPUT_ESC_DECKPNM:
1302 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1303 break;
1304 case INPUT_ESC_DECSC:
1305 input_save_state(ictx);
1306 break;
1307 case INPUT_ESC_DECRC:
1308 input_restore_state(ictx);
1309 break;
1310 case INPUT_ESC_DECALN:
1311 screen_write_alignmenttest(sctx);
1312 break;
1313 case INPUT_ESC_SCSG0_ON:
1314 ictx->cell.g0set = 1;
1315 break;
1316 case INPUT_ESC_SCSG0_OFF:
1317 ictx->cell.g0set = 0;
1318 break;
1319 case INPUT_ESC_SCSG1_ON:
1320 ictx->cell.g1set = 1;
1321 break;
1322 case INPUT_ESC_SCSG1_OFF:
1323 ictx->cell.g1set = 0;
1324 break;
1325 case INPUT_ESC_ST:
1326 /* ST terminates OSC but the state transition already did it. */
1327 break;
1328 }
1329
1330 ictx->last = -1;
1331 return (0);
1332 }
1333
1334 /* Execute control sequence. */
1335 static int
1336 input_csi_dispatch(struct input_ctx *ictx)
1337 {
1338 struct screen_write_ctx *sctx = &ictx->ctx;
1339 struct screen *s = sctx->s;
1340 struct input_table_entry *entry;
1341 int i, n, m;
1342 u_int cx, bg = ictx->cell.cell.bg;
1343
1344 if (ictx->flags & INPUT_DISCARD)
1345 return (0);
1346
1347 log_debug("%s: '%c' \"%s\" \"%s\"",
1348 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf);
1349
1350 if (input_split(ictx) != 0)
1351 return (0);
1352
1353 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1354 sizeof input_csi_table[0], input_table_compare);
1355 if (entry == NULL) {
1356 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1357 return (0);
1358 }
1359
1360 switch (entry->type) {
1361 case INPUT_CSI_CBT:
1362 /* Find the previous tab point, n times. */
1363 cx = s->cx;
1364 if (cx > screen_size_x(s) - 1)
1365 cx = screen_size_x(s) - 1;
1366 n = input_get(ictx, 0, 1, 1);
1367 if (n == -1)
1368 break;
1369 while (cx > 0 && n-- > 0) {
1370 do
1371 cx--;
1372 while (cx > 0 && !bit_test(s->tabs, cx));
1373 }
1374 s->cx = cx;
1375 break;
1376 case INPUT_CSI_CUB:
1377 n = input_get(ictx, 0, 1, 1);
1378 if (n != -1)
1379 screen_write_cursorleft(sctx, n);
1380 break;
1381 case INPUT_CSI_CUD:
1382 n = input_get(ictx, 0, 1, 1);
1383 if (n != -1)
1384 screen_write_cursordown(sctx, n);
1385 break;
1386 case INPUT_CSI_CUF:
1387 n = input_get(ictx, 0, 1, 1);
1388 if (n != -1)
1389 screen_write_cursorright(sctx, n);
1390 break;
1391 case INPUT_CSI_CUP:
1392 n = input_get(ictx, 0, 1, 1);
1393 m = input_get(ictx, 1, 1, 1);
1394 if (n != -1 && m != -1)
1395 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1396 break;
1397 case INPUT_CSI_MODSET:
1398 n = input_get(ictx, 0, 0, 0);
1399 m = input_get(ictx, 1, 0, 0);
1400 if (options_get_number(global_options, "extended-keys") == 2)
1401 break;
1402 if (n == 0 || (n == 4 && m == 0))
1403 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1404 else if (n == 4 && (m == 1 || m == 2))
1405 screen_write_mode_set(sctx, MODE_KEXTENDED);
1406 break;
1407 case INPUT_CSI_MODOFF:
1408 n = input_get(ictx, 0, 0, 0);
1409 if (n == 4)
1410 screen_write_mode_clear(sctx, MODE_KEXTENDED);
1411 break;
1412 case INPUT_CSI_WINOPS:
1413 input_csi_dispatch_winops(ictx);
1414 break;
1415 case INPUT_CSI_CUU:
1416 n = input_get(ictx, 0, 1, 1);
1417 if (n != -1)
1418 screen_write_cursorup(sctx, n);
1419 break;
1420 case INPUT_CSI_CNL:
1421 n = input_get(ictx, 0, 1, 1);
1422 if (n != -1) {
1423 screen_write_carriagereturn(sctx);
1424 screen_write_cursordown(sctx, n);
1425 }
1426 break;
1427 case INPUT_CSI_CPL:
1428 n = input_get(ictx, 0, 1, 1);
1429 if (n != -1) {
1430 screen_write_carriagereturn(sctx);
1431 screen_write_cursorup(sctx, n);
1432 }
1433 break;
1434 case INPUT_CSI_DA:
1435 switch (input_get(ictx, 0, 0, 0)) {
1436 case -1:
1437 break;
1438 case 0:
1439 input_reply(ictx, "\033[?1;2c");
1440 break;
1441 default:
1442 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1443 break;
1444 }
1445 break;
1446 case INPUT_CSI_DA_TWO:
1447 switch (input_get(ictx, 0, 0, 0)) {
1448 case -1:
1449 break;
1450 case 0:
1451 input_reply(ictx, "\033[>84;0;0c");
1452 break;
1453 default:
1454 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1455 break;
1456 }
1457 break;
1458 case INPUT_CSI_ECH:
1459 n = input_get(ictx, 0, 1, 1);
1460 if (n != -1)
1461 screen_write_clearcharacter(sctx, n, bg);
1462 break;
1463 case INPUT_CSI_DCH:
1464 n = input_get(ictx, 0, 1, 1);
1465 if (n != -1)
1466 screen_write_deletecharacter(sctx, n, bg);
1467 break;
1468 case INPUT_CSI_DECSTBM:
1469 n = input_get(ictx, 0, 1, 1);
1470 m = input_get(ictx, 1, 1, screen_size_y(s));
1471 if (n != -1 && m != -1)
1472 screen_write_scrollregion(sctx, n - 1, m - 1);
1473 break;
1474 case INPUT_CSI_DL:
1475 n = input_get(ictx, 0, 1, 1);
1476 if (n != -1)
1477 screen_write_deleteline(sctx, n, bg);
1478 break;
1479 case INPUT_CSI_DSR:
1480 switch (input_get(ictx, 0, 0, 0)) {
1481 case -1:
1482 break;
1483 case 5:
1484 input_reply(ictx, "\033[0n");
1485 break;
1486 case 6:
1487 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1488 break;
1489 default:
1490 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1491 break;
1492 }
1493 break;
1494 case INPUT_CSI_ED:
1495 switch (input_get(ictx, 0, 0, 0)) {
1496 case -1:
1497 break;
1498 case 0:
1499 screen_write_clearendofscreen(sctx, bg);
1500 break;
1501 case 1:
1502 screen_write_clearstartofscreen(sctx, bg);
1503 break;
1504 case 2:
1505 screen_write_clearscreen(sctx, bg);
1506 break;
1507 case 3:
1508 if (input_get(ictx, 1, 0, 0) == 0) {
1509 /*
1510 * Linux console extension to clear history
1511 * (for example before locking the screen).
1512 */
1513 screen_write_clearhistory(sctx);
1514 }
1515 break;
1516 default:
1517 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1518 break;
1519 }
1520 break;
1521 case INPUT_CSI_EL:
1522 switch (input_get(ictx, 0, 0, 0)) {
1523 case -1:
1524 break;
1525 case 0:
1526 screen_write_clearendofline(sctx, bg);
1527 break;
1528 case 1:
1529 screen_write_clearstartofline(sctx, bg);
1530 break;
1531 case 2:
1532 screen_write_clearline(sctx, bg);
1533 break;
1534 default:
1535 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1536 break;
1537 }
1538 break;
1539 case INPUT_CSI_HPA:
1540 n = input_get(ictx, 0, 1, 1);
1541 if (n != -1)
1542 screen_write_cursormove(sctx, n - 1, -1, 1);
1543 break;
1544 case INPUT_CSI_ICH:
1545 n = input_get(ictx, 0, 1, 1);
1546 if (n != -1)
1547 screen_write_insertcharacter(sctx, n, bg);
1548 break;
1549 case INPUT_CSI_IL:
1550 n = input_get(ictx, 0, 1, 1);
1551 if (n != -1)
1552 screen_write_insertline(sctx, n, bg);
1553 break;
1554 case INPUT_CSI_REP:
1555 n = input_get(ictx, 0, 1, 1);
1556 if (n == -1)
1557 break;
1558
1559 m = screen_size_x(s) - s->cx;
1560 if (n > m)
1561 n = m;
1562
1563 if (ictx->last == -1)
1564 break;
1565 ictx->ch = ictx->last;
1566
1567 for (i = 0; i < n; i++)
1568 input_print(ictx);
1569 break;
1570 case INPUT_CSI_RCP:
1571 input_restore_state(ictx);
1572 break;
1573 case INPUT_CSI_RM:
1574 input_csi_dispatch_rm(ictx);
1575 break;
1576 case INPUT_CSI_RM_PRIVATE:
1577 input_csi_dispatch_rm_private(ictx);
1578 break;
1579 case INPUT_CSI_SCP:
1580 input_save_state(ictx);
1581 break;
1582 case INPUT_CSI_SGR:
1583 input_csi_dispatch_sgr(ictx);
1584 break;
1585 case INPUT_CSI_SM:
1586 input_csi_dispatch_sm(ictx);
1587 break;
1588 case INPUT_CSI_SM_PRIVATE:
1589 input_csi_dispatch_sm_private(ictx);
1590 break;
1591 case INPUT_CSI_SU:
1592 n = input_get(ictx, 0, 1, 1);
1593 if (n != -1)
1594 screen_write_scrollup(sctx, n, bg);
1595 break;
1596 case INPUT_CSI_SD:
1597 n = input_get(ictx, 0, 1, 1);
1598 if (n != -1)
1599 screen_write_scrolldown(sctx, n, bg);
1600 break;
1601 case INPUT_CSI_TBC:
1602 switch (input_get(ictx, 0, 0, 0)) {
1603 case -1:
1604 break;
1605 case 0:
1606 if (s->cx < screen_size_x(s))
1607 bit_clear(s->tabs, s->cx);
1608 break;
1609 case 3:
1610 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1611 break;
1612 default:
1613 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1614 break;
1615 }
1616 break;
1617 case INPUT_CSI_VPA:
1618 n = input_get(ictx, 0, 1, 1);
1619 if (n != -1)
1620 screen_write_cursormove(sctx, -1, n - 1, 1);
1621 break;
1622 case INPUT_CSI_DECSCUSR:
1623 n = input_get(ictx, 0, 0, 0);
1624 if (n != -1)
1625 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1626 break;
1627 case INPUT_CSI_XDA:
1628 n = input_get(ictx, 0, 0, 0);
1629 if (n == 0)
1630 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1631 break;
1632
1633 }
1634
1635 ictx->last = -1;
1636 return (0);
1637 }
1638
1639 /* Handle CSI RM. */
1640 static void
1641 input_csi_dispatch_rm(struct input_ctx *ictx)
1642 {
1643 struct screen_write_ctx *sctx = &ictx->ctx;
1644 u_int i;
1645
1646 for (i = 0; i < ictx->param_list_len; i++) {
1647 switch (input_get(ictx, i, 0, -1)) {
1648 case -1:
1649 break;
1650 case 4: /* IRM */
1651 screen_write_mode_clear(sctx, MODE_INSERT);
1652 break;
1653 case 34:
1654 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE);
1655 break;
1656 default:
1657 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1658 break;
1659 }
1660 }
1661 }
1662
1663 /* Handle CSI private RM. */
1664 static void
1665 input_csi_dispatch_rm_private(struct input_ctx *ictx)
1666 {
1667 struct screen_write_ctx *sctx = &ictx->ctx;
1668 struct grid_cell *gc = &ictx->cell.cell;
1669 u_int i;
1670
1671 for (i = 0; i < ictx->param_list_len; i++) {
1672 switch (input_get(ictx, i, 0, -1)) {
1673 case -1:
1674 break;
1675 case 1: /* DECCKM */
1676 screen_write_mode_clear(sctx, MODE_KCURSOR);
1677 break;
1678 case 3: /* DECCOLM */
1679 screen_write_cursormove(sctx, 0, 0, 1);
1680 screen_write_clearscreen(sctx, gc->bg);
1681 break;
1682 case 6: /* DECOM */
1683 screen_write_mode_clear(sctx, MODE_ORIGIN);
1684 screen_write_cursormove(sctx, 0, 0, 1);
1685 break;
1686 case 7: /* DECAWM */
1687 screen_write_mode_clear(sctx, MODE_WRAP);
1688 break;
1689 case 12:
1690 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING);
1691 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1692 break;
1693 case 25: /* TCEM */
1694 screen_write_mode_clear(sctx, MODE_CURSOR);
1695 break;
1696 case 1000:
1697 case 1001:
1698 case 1002:
1699 case 1003:
1700 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1701 break;
1702 case 1004:
1703 screen_write_mode_clear(sctx, MODE_FOCUSON);
1704 break;
1705 case 1005:
1706 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1707 break;
1708 case 1006:
1709 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1710 break;
1711 case 47:
1712 case 1047:
1713 screen_write_alternateoff(sctx, gc, 0);
1714 break;
1715 case 1049:
1716 screen_write_alternateoff(sctx, gc, 1);
1717 break;
1718 case 2004:
1719 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1720 break;
1721 default:
1722 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1723 break;
1724 }
1725 }
1726 }
1727
1728 /* Handle CSI SM. */
1729 static void
1730 input_csi_dispatch_sm(struct input_ctx *ictx)
1731 {
1732 struct screen_write_ctx *sctx = &ictx->ctx;
1733 u_int i;
1734
1735 for (i = 0; i < ictx->param_list_len; i++) {
1736 switch (input_get(ictx, i, 0, -1)) {
1737 case -1:
1738 break;
1739 case 4: /* IRM */
1740 screen_write_mode_set(sctx, MODE_INSERT);
1741 break;
1742 case 34:
1743 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE);
1744 break;
1745 default:
1746 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1747 break;
1748 }
1749 }
1750 }
1751
1752 /* Handle CSI private SM. */
1753 static void
1754 input_csi_dispatch_sm_private(struct input_ctx *ictx)
1755 {
1756 struct screen_write_ctx *sctx = &ictx->ctx;
1757 struct window_pane *wp = ictx->wp;
1758 struct grid_cell *gc = &ictx->cell.cell;
1759 u_int i;
1760
1761 for (i = 0; i < ictx->param_list_len; i++) {
1762 switch (input_get(ictx, i, 0, -1)) {
1763 case -1:
1764 break;
1765 case 1: /* DECCKM */
1766 screen_write_mode_set(sctx, MODE_KCURSOR);
1767 break;
1768 case 3: /* DECCOLM */
1769 screen_write_cursormove(sctx, 0, 0, 1);
1770 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1771 break;
1772 case 6: /* DECOM */
1773 screen_write_mode_set(sctx, MODE_ORIGIN);
1774 screen_write_cursormove(sctx, 0, 0, 1);
1775 break;
1776 case 7: /* DECAWM */
1777 screen_write_mode_set(sctx, MODE_WRAP);
1778 break;
1779 case 12:
1780 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING);
1781 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET);
1782 break;
1783 case 25: /* TCEM */
1784 screen_write_mode_set(sctx, MODE_CURSOR);
1785 break;
1786 case 1000:
1787 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1788 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1789 break;
1790 case 1002:
1791 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1792 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1793 break;
1794 case 1003:
1795 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1796 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1797 break;
1798 case 1004:
1799 if (sctx->s->mode & MODE_FOCUSON)
1800 break;
1801 screen_write_mode_set(sctx, MODE_FOCUSON);
1802 if (wp == NULL)
1803 break;
1804 if (!options_get_number(global_options, "focus-events"))
1805 break;
1806 if (wp->flags & PANE_FOCUSED)
1807 bufferevent_write(wp->event, "\033[I", 3);
1808 else
1809 bufferevent_write(wp->event, "\033[O", 3);
1810 break;
1811 case 1005:
1812 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1813 break;
1814 case 1006:
1815 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1816 break;
1817 case 47:
1818 case 1047:
1819 screen_write_alternateon(sctx, gc, 0);
1820 break;
1821 case 1049:
1822 screen_write_alternateon(sctx, gc, 1);
1823 break;
1824 case 2004:
1825 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1826 break;
1827 default:
1828 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1829 break;
1830 }
1831 }
1832 }
1833
1834 /* Handle CSI window operations. */
1835 static void
1836 input_csi_dispatch_winops(struct input_ctx *ictx)
1837 {
1838 struct screen_write_ctx *sctx = &ictx->ctx;
1839 struct screen *s = sctx->s;
1840 struct window_pane *wp = ictx->wp;
1841 u_int x = screen_size_x(s), y = screen_size_y(s);
1842 int n, m;
1843
1844 m = 0;
1845 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1846 switch (n) {
1847 case 1:
1848 case 2:
1849 case 5:
1850 case 6:
1851 case 7:
1852 case 11:
1853 case 13:
1854 case 14:
1855 case 19:
1856 case 20:
1857 case 21:
1858 case 24:
1859 break;
1860 case 3:
1861 case 4:
1862 case 8:
1863 m++;
1864 if (input_get(ictx, m, 0, -1) == -1)
1865 return;
1866 /* FALLTHROUGH */
1867 case 9:
1868 case 10:
1869 m++;
1870 if (input_get(ictx, m, 0, -1) == -1)
1871 return;
1872 break;
1873 case 22:
1874 m++;
1875 switch (input_get(ictx, m, 0, -1)) {
1876 case -1:
1877 return;
1878 case 0:
1879 case 2:
1880 screen_push_title(sctx->s);
1881 break;
1882 }
1883 break;
1884 case 23:
1885 m++;
1886 switch (input_get(ictx, m, 0, -1)) {
1887 case -1:
1888 return;
1889 case 0:
1890 case 2:
1891 screen_pop_title(sctx->s);
1892 if (wp == NULL)
1893 break;
1894 notify_pane("pane-title-changed", wp);
1895 server_redraw_window_borders(wp->window);
1896 server_status_window(wp->window);
1897 break;
1898 }
1899 break;
1900 case 18:
1901 input_reply(ictx, "\033[8;%u;%ut", x, y);
1902 break;
1903 default:
1904 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1905 break;
1906 }
1907 m++;
1908 }
1909 }
1910
1911 /* Helper for 256 colour SGR. */
1912 static int
1913 input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1914 {
1915 struct grid_cell *gc = &ictx->cell.cell;
1916
1917 if (c == -1 || c > 255) {
1918 if (fgbg == 38)
1919 gc->fg = 8;
1920 else if (fgbg == 48)
1921 gc->bg = 8;
1922 } else {
1923 if (fgbg == 38)
1924 gc->fg = c | COLOUR_FLAG_256;
1925 else if (fgbg == 48)
1926 gc->bg = c | COLOUR_FLAG_256;
1927 else if (fgbg == 58)
1928 gc->us = c | COLOUR_FLAG_256;
1929 }
1930 return (1);
1931 }
1932
1933 /* Handle CSI SGR for 256 colours. */
1934 static void
1935 input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1936 {
1937 int c;
1938
1939 c = input_get(ictx, (*i) + 1, 0, -1);
1940 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1941 (*i)++;
1942 }
1943
1944 /* Helper for RGB colour SGR. */
1945 static int
1946 input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1947 int b)
1948 {
1949 struct grid_cell *gc = &ictx->cell.cell;
1950
1951 if (r == -1 || r > 255)
1952 return (0);
1953 if (g == -1 || g > 255)
1954 return (0);
1955 if (b == -1 || b > 255)
1956 return (0);
1957
1958 if (fgbg == 38)
1959 gc->fg = colour_join_rgb(r, g, b);
1960 else if (fgbg == 48)
1961 gc->bg = colour_join_rgb(r, g, b);
1962 else if (fgbg == 58)
1963 gc->us = colour_join_rgb(r, g, b);
1964 return (1);
1965 }
1966
1967 /* Handle CSI SGR for RGB colours. */
1968 static void
1969 input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
1970 {
1971 int r, g, b;
1972
1973 r = input_get(ictx, (*i) + 1, 0, -1);
1974 g = input_get(ictx, (*i) + 2, 0, -1);
1975 b = input_get(ictx, (*i) + 3, 0, -1);
1976 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
1977 (*i) += 3;
1978 }
1979
1980 /* Handle CSI SGR with a ISO parameter. */
1981 static void
1982 input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
1983 {
1984 struct grid_cell *gc = &ictx->cell.cell;
1985 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
1986 int p[8];
1987 u_int n;
1988 const char *errstr;
1989
1990 for (n = 0; n < nitems(p); n++)
1991 p[n] = -1;
1992 n = 0;
1993
1994 ptr = copy = xstrdup(s);
1995 while ((out = strsep(&ptr, ":")) != NULL) {
1996 if (*out != '\0') {
1997 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
1998 if (errstr != NULL || n == nitems(p)) {
1999 free(copy);
2000 return;
2001 }
2002 } else {
2003 n++;
2004 if (n == nitems(p)) {
2005 free(copy);
2006 return;
2007 }
2008 }
2009 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2010 }
2011 free(copy);
2012
2013 if (n == 0)
2014 return;
2015 if (p[0] == 4) {
2016 if (n != 2)
2017 return;
2018 switch (p[1]) {
2019 case 0:
2020 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2021 break;
2022 case 1:
2023 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2024 gc->attr |= GRID_ATTR_UNDERSCORE;
2025 break;
2026 case 2:
2027 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2028 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2029 break;
2030 case 3:
2031 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2032 gc->attr |= GRID_ATTR_UNDERSCORE_3;
2033 break;
2034 case 4:
2035 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2036 gc->attr |= GRID_ATTR_UNDERSCORE_4;
2037 break;
2038 case 5:
2039 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2040 gc->attr |= GRID_ATTR_UNDERSCORE_5;
2041 break;
2042 }
2043 return;
2044 }
2045 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2046 return;
2047 switch (p[1]) {
2048 case 2:
2049 if (n < 3)
2050 break;
2051 if (n == 5)
2052 i = 2;
2053 else
2054 i = 3;
2055 if (n < i + 3)
2056 break;
2057 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2058 p[i + 2]);
2059 break;
2060 case 5:
2061 if (n < 3)
2062 break;
2063 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2064 break;
2065 }
2066 }
2067
2068 /* Handle CSI SGR. */
2069 static void
2070 input_csi_dispatch_sgr(struct input_ctx *ictx)
2071 {
2072 struct grid_cell *gc = &ictx->cell.cell;
2073 u_int i;
2074 int n;
2075
2076 if (ictx->param_list_len == 0) {
2077 memcpy(gc, &grid_default_cell, sizeof *gc);
2078 return;
2079 }
2080
2081 for (i = 0; i < ictx->param_list_len; i++) {
2082 if (ictx->param_list[i].type == INPUT_STRING) {
2083 input_csi_dispatch_sgr_colon(ictx, i);
2084 continue;
2085 }
2086 n = input_get(ictx, i, 0, 0);
2087 if (n == -1)
2088 continue;
2089
2090 if (n == 38 || n == 48 || n == 58) {
2091 i++;
2092 switch (input_get(ictx, i, 0, -1)) {
2093 case 2:
2094 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2095 break;
2096 case 5:
2097 input_csi_dispatch_sgr_256(ictx, n, &i);
2098 break;
2099 }
2100 continue;
2101 }
2102
2103 switch (n) {
2104 case 0:
2105 memcpy(gc, &grid_default_cell, sizeof *gc);
2106 break;
2107 case 1:
2108 gc->attr |= GRID_ATTR_BRIGHT;
2109 break;
2110 case 2:
2111 gc->attr |= GRID_ATTR_DIM;
2112 break;
2113 case 3:
2114 gc->attr |= GRID_ATTR_ITALICS;
2115 break;
2116 case 4:
2117 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2118 gc->attr |= GRID_ATTR_UNDERSCORE;
2119 break;
2120 case 5:
2121 case 6:
2122 gc->attr |= GRID_ATTR_BLINK;
2123 break;
2124 case 7:
2125 gc->attr |= GRID_ATTR_REVERSE;
2126 break;
2127 case 8:
2128 gc->attr |= GRID_ATTR_HIDDEN;
2129 break;
2130 case 9:
2131 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2132 break;
2133 case 21:
2134 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2135 gc->attr |= GRID_ATTR_UNDERSCORE_2;
2136 break;
2137 case 22:
2138 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2139 break;
2140 case 23:
2141 gc->attr &= ~GRID_ATTR_ITALICS;
2142 break;
2143 case 24:
2144 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2145 break;
2146 case 25:
2147 gc->attr &= ~GRID_ATTR_BLINK;
2148 break;
2149 case 27:
2150 gc->attr &= ~GRID_ATTR_REVERSE;
2151 break;
2152 case 28:
2153 gc->attr &= ~GRID_ATTR_HIDDEN;
2154 break;
2155 case 29:
2156 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2157 break;
2158 case 30:
2159 case 31:
2160 case 32:
2161 case 33:
2162 case 34:
2163 case 35:
2164 case 36:
2165 case 37:
2166 gc->fg = n - 30;
2167 break;
2168 case 39:
2169 gc->fg = 8;
2170 break;
2171 case 40:
2172 case 41:
2173 case 42:
2174 case 43:
2175 case 44:
2176 case 45:
2177 case 46:
2178 case 47:
2179 gc->bg = n - 40;
2180 break;
2181 case 49:
2182 gc->bg = 8;
2183 break;
2184 case 53:
2185 gc->attr |= GRID_ATTR_OVERLINE;
2186 break;
2187 case 55:
2188 gc->attr &= ~GRID_ATTR_OVERLINE;
2189 break;
2190 case 59:
2191 gc->us = 0;
2192 break;
2193 case 90:
2194 case 91:
2195 case 92:
2196 case 93:
2197 case 94:
2198 case 95:
2199 case 96:
2200 case 97:
2201 gc->fg = n;
2202 break;
2203 case 100:
2204 case 101:
2205 case 102:
2206 case 103:
2207 case 104:
2208 case 105:
2209 case 106:
2210 case 107:
2211 gc->bg = n - 10;
2212 break;
2213 }
2214 }
2215 }
2216
2217 /* End of input with BEL. */
2218 static int
2219 input_end_bel(struct input_ctx *ictx)
2220 {
2221 log_debug("%s", __func__);
2222
2223 ictx->input_end = INPUT_END_BEL;
2224
2225 return (0);
2226 }
2227
2228 /* DCS string started. */
2229 static void
2230 input_enter_dcs(struct input_ctx *ictx)
2231 {
2232 log_debug("%s", __func__);
2233
2234 input_clear(ictx);
2235 input_start_timer(ictx);
2236 ictx->last = -1;
2237 }
2238
2239 /* DCS terminator (ST) received. */
2240 static int
2241 input_dcs_dispatch(struct input_ctx *ictx)
2242 {
2243 struct window_pane *wp = ictx->wp;
2244 struct screen_write_ctx *sctx = &ictx->ctx;
2245 u_char *buf = ictx->input_buf;
2246 size_t len = ictx->input_len;
2247 const char prefix[] = "tmux;";
2248 const u_int prefixlen = (sizeof prefix) - 1;
2249
2250 if (wp == NULL)
2251 return (0);
2252 if (ictx->flags & INPUT_DISCARD)
2253 return (0);
2254 if (!options_get_number(ictx->wp->options, "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
2261 return (0);
2262 }
2263
2264 /* OSC string started. */
2265 static void
2266 input_enter_osc(struct input_ctx *ictx)
2267 {
2268 log_debug("%s", __func__);
2269
2270 input_clear(ictx);
2271 input_start_timer(ictx);
2272 ictx->last = -1;
2273 }
2274
2275 /* OSC terminator (ST) received. */
2276 static void
2277 input_exit_osc(struct input_ctx *ictx)
2278 {
2279 struct screen_write_ctx *sctx = &ictx->ctx;
2280 struct window_pane *wp = ictx->wp;
2281 u_char *p = ictx->input_buf;
2282 u_int option;
2283
2284 if (ictx->flags & INPUT_DISCARD)
2285 return;
2286 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2287 return;
2288
2289 log_debug("%s: \"%s\" (end %s)", __func__, p,
2290 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2291
2292 option = 0;
2293 while (*p >= '0' && *p <= '9')
2294 option = option * 10 + *p++ - '0';
2295 if (*p != ';' && *p != '\0')
2296 return;
2297 if (*p == ';')
2298 p++;
2299
2300 switch (option) {
2301 case 0:
2302 case 2:
2303 if (screen_set_title(sctx->s, p) && wp != NULL) {
2304 notify_pane("pane-title-changed", wp);
2305 server_redraw_window_borders(wp->window);
2306 server_status_window(wp->window);
2307 }
2308 break;
2309 case 4:
2310 input_osc_4(ictx, p);
2311 break;
2312 case 7:
2313 if (utf8_isvalid(p)) {
2314 screen_set_path(sctx->s, p);
2315 if (wp != NULL) {
2316 server_redraw_window_borders(wp->window);
2317 server_status_window(wp->window);
2318 }
2319 }
2320 break;
2321 case 10:
2322 input_osc_10(ictx, p);
2323 break;
2324 case 11:
2325 input_osc_11(ictx, p);
2326 break;
2327 case 12:
2328 input_osc_12(ictx, p);
2329 break;
2330 case 52:
2331 input_osc_52(ictx, p);
2332 break;
2333 case 104:
2334 input_osc_104(ictx, p);
2335 break;
2336 case 110:
2337 input_osc_110(ictx, p);
2338 break;
2339 case 111:
2340 input_osc_111(ictx, p);
2341 break;
2342 case 112:
2343 input_osc_112(ictx, p);
2344 break;
2345 default:
2346 log_debug("%s: unknown '%u'", __func__, option);
2347 break;
2348 }
2349 }
2350
2351 /* APC string started. */
2352 static void
2353 input_enter_apc(struct input_ctx *ictx)
2354 {
2355 log_debug("%s", __func__);
2356
2357 input_clear(ictx);
2358 input_start_timer(ictx);
2359 ictx->last = -1;
2360 }
2361
2362 /* APC terminator (ST) received. */
2363 static void
2364 input_exit_apc(struct input_ctx *ictx)
2365 {
2366 struct screen_write_ctx *sctx = &ictx->ctx;
2367 struct window_pane *wp = ictx->wp;
2368
2369 if (ictx->flags & INPUT_DISCARD)
2370 return;
2371 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2372
2373 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL) {
2374 notify_pane("pane-title-changed", wp);
2375 server_redraw_window_borders(wp->window);
2376 server_status_window(wp->window);
2377 }
2378 }
2379
2380 /* Rename string started. */
2381 static void
2382 input_enter_rename(struct input_ctx *ictx)
2383 {
2384 log_debug("%s", __func__);
2385
2386 input_clear(ictx);
2387 input_start_timer(ictx);
2388 ictx->last = -1;
2389 }
2390
2391 /* Rename terminator (ST) received. */
2392 static void
2393 input_exit_rename(struct input_ctx *ictx)
2394 {
2395 struct window_pane *wp = ictx->wp;
2396 struct window *w;
2397 struct options_entry *o;
2398
2399 if (wp == NULL)
2400 return;
2401 if (ictx->flags & INPUT_DISCARD)
2402 return;
2403 if (!options_get_number(ictx->wp->options, "allow-rename"))
2404 return;
2405 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2406
2407 if (!utf8_isvalid(ictx->input_buf))
2408 return;
2409 w = wp->window;
2410
2411 if (ictx->input_len == 0) {
2412 o = options_get_only(w->options, "automatic-rename");
2413 if (o != NULL)
2414 options_remove_or_default(o, -1, NULL);
2415 if (!options_get_number(w->options, "automatic-rename"))
2416 window_set_name(w, "");
2417 } else {
2418 options_set_number(w->options, "automatic-rename", 0);
2419 window_set_name(w, ictx->input_buf);
2420 }
2421 server_redraw_window_borders(w);
2422 server_status_window(w);
2423 }
2424
2425 /* Open UTF-8 character. */
2426 static int
2427 input_top_bit_set(struct input_ctx *ictx)
2428 {
2429 struct screen_write_ctx *sctx = &ictx->ctx;
2430 struct utf8_data *ud = &ictx->utf8data;
2431
2432 ictx->last = -1;
2433
2434 if (!ictx->utf8started) {
2435 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2436 return (0);
2437 ictx->utf8started = 1;
2438 return (0);
2439 }
2440
2441 switch (utf8_append(ud, ictx->ch)) {
2442 case UTF8_MORE:
2443 return (0);
2444 case UTF8_ERROR:
2445 ictx->utf8started = 0;
2446 return (0);
2447 case UTF8_DONE:
2448 break;
2449 }
2450 ictx->utf8started = 0;
2451
2452 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2453 (int)ud->size, ud->data, ud->width);
2454
2455 utf8_copy(&ictx->cell.cell.data, ud);
2456 screen_write_collect_add(sctx, &ictx->cell.cell);
2457
2458 return (0);
2459 }
2460
2461 /* Parse colour from OSC. */
2462 static int
2463 input_osc_parse_colour(const char *p)
2464 {
2465 double c, m, y, k = 0;
2466 u_int r, g, b;
2467 size_t len = strlen(p);
2468 int colour = -1;
2469 char *copy;
2470
2471 if ((len == 12 && sscanf(p, "rgb:%02x/%02x/%02x", &r, &g, &b) == 3) ||
2472 (len == 7 && sscanf(p, "#%02x%02x%02x", &r, &g, &b) == 3) ||
2473 sscanf(p, "%d,%d,%d", &r, &g, &b) == 3)
2474 colour = colour_join_rgb(r, g, b);
2475 else if ((len == 18 &&
2476 sscanf(p, "rgb:%04x/%04x/%04x", &r, &g, &b) == 3) ||
2477 (len == 13 && sscanf(p, "#%04x%04x%04x", &r, &g, &b) == 3))
2478 colour = colour_join_rgb(r >> 8, g >> 8, b >> 8);
2479 else if ((sscanf(p, "cmyk:%lf/%lf/%lf/%lf", &c, &m, &y, &k) == 4 ||
2480 sscanf(p, "cmy:%lf/%lf/%lf", &c, &m, &y) == 3) &&
2481 c >= 0 && c <= 1 && m >= 0 && m <= 1 &&
2482 y >= 0 && y <= 1 && k >= 0 && k <= 1) {
2483 colour = colour_join_rgb(
2484 (1 - c) * (1 - k) * 255,
2485 (1 - m) * (1 - k) * 255,
2486 (1 - y) * (1 - k) * 255);
2487 } else {
2488 while (len != 0 && *p == ' ') {
2489 p++;
2490 len--;
2491 }
2492 while (len != 0 && p[len - 1] == ' ')
2493 len--;
2494 copy = xstrndup(p, len);
2495 colour = colour_byname(copy);
2496 free(copy);
2497 }
2498 log_debug("%s: %s = %s", __func__, p, colour_tostring(colour));
2499 return (colour);
2500 }
2501
2502 /* Reply to a colour request. */
2503 static void
2504 input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2505 {
2506 u_char r, g, b;
2507 const char *end;
2508
2509 if (c != -1)
2510 c = colour_force_rgb(c);
2511 if (c == -1)
2512 return;
2513 colour_split_rgb(c, &r, &g, &b);
2514
2515 if (ictx->input_end == INPUT_END_BEL)
2516 end = "\007";
2517 else
2518 end = "\033\\";
2519 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2520 n, r, r, g, g, b, b, end);
2521 }
2522
2523 /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2524 static void
2525 input_osc_4(struct input_ctx *ictx, const char *p)
2526 {
2527 char *copy, *s, *next = NULL;
2528 long idx;
2529 int c, bad = 0, redraw = 0;
2530
2531 copy = s = xstrdup(p);
2532 while (s != NULL && *s != '\0') {
2533 idx = strtol(s, &next, 10);
2534 if (*next++ != ';') {
2535 bad = 1;
2536 break;
2537 }
2538 if (idx < 0 || idx >= 256) {
2539 bad = 1;
2540 break;
2541 }
2542
2543 s = strsep(&next, ";");
2544 if (strcmp(s, "?") == 0) {
2545 c = colour_palette_get(ictx->palette, idx);
2546 if (c != -1)
2547 input_osc_colour_reply(ictx, 4, c);
2548 continue;
2549 }
2550 if ((c = input_osc_parse_colour(s)) == -1) {
2551 s = next;
2552 continue;
2553 }
2554 if (colour_palette_set(ictx->palette, idx, c))
2555 redraw = 1;
2556 s = next;
2557 }
2558 if (bad)
2559 log_debug("bad OSC 4: %s", p);
2560 if (redraw)
2561 screen_write_fullredraw(&ictx->ctx);
2562 free(copy);
2563 }
2564
2565 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
2566 static void
2567 input_osc_10(struct input_ctx *ictx, const char *p)
2568 {
2569 struct window_pane *wp = ictx->wp;
2570 struct grid_cell defaults;
2571 int c;
2572
2573 if (strcmp(p, "?") == 0) {
2574 if (wp != NULL) {
2575 tty_default_colours(&defaults, wp);
2576 input_osc_colour_reply(ictx, 10, defaults.fg);
2577 }
2578 return;
2579 }
2580
2581 if ((c = input_osc_parse_colour(p)) == -1) {
2582 log_debug("bad OSC 10: %s", p);
2583 return;
2584 }
2585 if (ictx->palette != NULL) {
2586 ictx->palette->fg = c;
2587 if (wp != NULL)
2588 wp->flags |= PANE_STYLECHANGED;
2589 screen_write_fullredraw(&ictx->ctx);
2590 }
2591 }
2592
2593 /* Handle the OSC 110 sequence for resetting foreground colour. */
2594 static void
2595 input_osc_110(struct input_ctx *ictx, const char *p)
2596 {
2597 struct window_pane *wp = ictx->wp;
2598
2599 if (*p != '\0')
2600 return;
2601 if (ictx->palette != NULL) {
2602 ictx->palette->fg = 8;
2603 if (wp != NULL)
2604 wp->flags |= PANE_STYLECHANGED;
2605 screen_write_fullredraw(&ictx->ctx);
2606 }
2607 }
2608
2609 /* Handle the OSC 11 sequence for setting and querying background colour. */
2610 static void
2611 input_osc_11(struct input_ctx *ictx, const char *p)
2612 {
2613 struct window_pane *wp = ictx->wp;
2614 struct grid_cell defaults;
2615 int c;
2616
2617 if (strcmp(p, "?") == 0) {
2618 if (wp != NULL) {
2619 tty_default_colours(&defaults, wp);
2620 input_osc_colour_reply(ictx, 11, defaults.bg);
2621 }
2622 return;
2623 }
2624
2625 if ((c = input_osc_parse_colour(p)) == -1) {
2626 log_debug("bad OSC 11: %s", p);
2627 return;
2628 }
2629 if (ictx->palette != NULL) {
2630 ictx->palette->bg = c;
2631 if (wp != NULL)
2632 wp->flags |= PANE_STYLECHANGED;
2633 screen_write_fullredraw(&ictx->ctx);
2634 }
2635 }
2636
2637 /* Handle the OSC 111 sequence for resetting background colour. */
2638 static void
2639 input_osc_111(struct input_ctx *ictx, const char *p)
2640 {
2641 struct window_pane *wp = ictx->wp;
2642
2643 if (*p != '\0')
2644 return;
2645 if (ictx->palette != NULL) {
2646 ictx->palette->bg = 8;
2647 if (wp != NULL)
2648 wp->flags |= PANE_STYLECHANGED;
2649 screen_write_fullredraw(&ictx->ctx);
2650 }
2651 }
2652
2653 /* Handle the OSC 12 sequence for setting and querying cursor colour. */
2654 static void
2655 input_osc_12(struct input_ctx *ictx, const char *p)
2656 {
2657 struct window_pane *wp = ictx->wp;
2658 int c;
2659
2660 if (strcmp(p, "?") == 0) {
2661 if (wp != NULL) {
2662 c = ictx->ctx.s->ccolour;
2663 if (c == -1)
2664 c = ictx->ctx.s->default_ccolour;
2665 input_osc_colour_reply(ictx, 12, c);
2666 }
2667 return;
2668 }
2669
2670 if ((c = input_osc_parse_colour(p)) == -1) {
2671 log_debug("bad OSC 12: %s", p);
2672 return;
2673 }
2674 screen_set_cursor_colour(ictx->ctx.s, c);
2675 }
2676
2677 /* Handle the OSC 112 sequence for resetting cursor colour. */
2678 static void
2679 input_osc_112(struct input_ctx *ictx, const char *p)
2680 {
2681 if (*p == '\0') /* no arguments allowed */
2682 screen_set_cursor_colour(ictx->ctx.s, -1);
2683 }
2684
2685
2686 /* Handle the OSC 52 sequence for setting the clipboard. */
2687 static void
2688 input_osc_52(struct input_ctx *ictx, const char *p)
2689 {
2690 struct window_pane *wp = ictx->wp;
2691 char *end;
2692 const char *buf = NULL;
2693 size_t len = 0;
2694 u_char *out;
2695 int outlen, state;
2696 struct screen_write_ctx ctx;
2697 struct paste_buffer *pb;
2698 const char* allow = "cpqs01234567";
2699 char flags[sizeof "cpqs01234567"] = "";
2700 u_int i, j = 0;
2701
2702 if (wp == NULL)
2703 return;
2704 state = options_get_number(global_options, "set-clipboard");
2705 if (state != 2)
2706 return;
2707
2708 if ((end = strchr(p, ';')) == NULL)
2709 return;
2710 end++;
2711 if (*end == '\0')
2712 return;
2713 log_debug("%s: %s", __func__, end);
2714
2715 for (i = 0; p + i != end; i++) {
2716 if (strchr(allow, p[i]) != NULL && strchr(flags, p[i]) == NULL)
2717 flags[j++] = p[i];
2718 }
2719 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2720
2721 if (strcmp(end, "?") == 0) {
2722 if ((pb = paste_get_top(NULL)) != NULL)
2723 buf = paste_buffer_data(pb, &len);
2724 if (ictx->input_end == INPUT_END_BEL)
2725 input_reply_clipboard(ictx->event, buf, len, "\007");
2726 else
2727 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2728 return;
2729 }
2730
2731 len = (strlen(end) / 4) * 3;
2732 if (len == 0)
2733 return;
2734
2735 out = xmalloc(len);
2736 if ((outlen = b64_pton(end, out, len)) == -1) {
2737 free(out);
2738 return;
2739 }
2740
2741 screen_write_start_pane(&ctx, wp, NULL);
2742 screen_write_setselection(&ctx, flags, out, outlen);
2743 screen_write_stop(&ctx);
2744 notify_pane("pane-set-clipboard", wp);
2745
2746 paste_add(NULL, out, outlen);
2747 }
2748
2749 /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2750 static void
2751 input_osc_104(struct input_ctx *ictx, const char *p)
2752 {
2753 char *copy, *s;
2754 long idx;
2755 int bad = 0, redraw = 0;
2756
2757 if (*p == '\0') {
2758 colour_palette_clear(ictx->palette);
2759 screen_write_fullredraw(&ictx->ctx);
2760 return;
2761 }
2762
2763 copy = s = xstrdup(p);
2764 while (*s != '\0') {
2765 idx = strtol(s, &s, 10);
2766 if (*s != '\0' && *s != ';') {
2767 bad = 1;
2768 break;
2769 }
2770 if (idx < 0 || idx >= 256) {
2771 bad = 1;
2772 break;
2773 }
2774 if (colour_palette_set(ictx->palette, idx, -1))
2775 redraw = 1;
2776 if (*s == ';')
2777 s++;
2778 }
2779 if (bad)
2780 log_debug("bad OSC 104: %s", p);
2781 if (redraw)
2782 screen_write_fullredraw(&ictx->ctx);
2783 free(copy);
2784 }
2785
2786 void
2787 input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2788 const char *end)
2789 {
2790 char *out = NULL;
2791 size_t outlen = 0;
2792
2793 if (buf != NULL && len != 0) {
2794 outlen = 4 * ((len + 2) / 3) + 1;
2795 out = xmalloc(outlen);
2796 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2797 free(out);
2798 return;
2799 }
2800 }
2801
2802 bufferevent_write(bev, "\033]52;;", 6);
2803 if (outlen != 0)
2804 bufferevent_write(bev, out, outlen);
2805 bufferevent_write(bev, end, strlen(end));
2806 free(out);
2807 }