1/* $OpenBSD$ */
2
3/*
4 * Copyright (c) 2007 Nicholas Marriott <[email protected]>
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. */
55struct 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. */
63struct 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. */
76struct input_ctx {
77 struct window_pane *wp;
78 struct screen_write_ctx ctx;
79
80 struct input_cell cell;
81
82 struct input_cell old_cell;
83 u_int old_cx;
84 u_int old_cy;
85 int old_mode;
86
87 u_char interm_buf[4];
88 size_t interm_len;
89
90 u_char param_buf[64];
91 size_t param_len;
92
93#define INPUT_BUF_START 32
94#define INPUT_BUF_LIMIT 1048576
95 u_char *input_buf;
96 size_t input_len;
97 size_t input_space;
98 enum {
99 INPUT_END_ST,
100 INPUT_END_BEL
101 } input_end;
102
103 struct input_param param_list[24];
104 u_int param_list_len;
105
106 struct utf8_data utf8data;
107 int utf8started;
108
109 int ch;
110 int last;
111
112 int flags;
113#define INPUT_DISCARD 0x1
114
115 const struct input_state *state;
116
117 struct event timer;
118
119 /*
120 * All input received since we were last in the ground state. Sent to
121 * control clients on connection.
122 */
123 struct evbuffer *since_ground;
124};
125
126/* Helper functions. */
127struct input_transition;
128static int input_split(struct input_ctx *);
129static int input_get(struct input_ctx *, u_int, int, int);
130static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...);
131static void input_set_state(struct window_pane *,
132 const struct input_transition *);
133static void input_reset_cell(struct input_ctx *);
134
135static void input_osc_4(struct input_ctx *, const char *);
136static void input_osc_10(struct input_ctx *, const char *);
137static void input_osc_11(struct input_ctx *, const char *);
138static void input_osc_52(struct input_ctx *, const char *);
139static void input_osc_104(struct input_ctx *, const char *);
140
141/* Transition entry/exit handlers. */
142static void input_clear(struct input_ctx *);
143static void input_ground(struct input_ctx *);
144static void input_enter_dcs(struct input_ctx *);
145static void input_enter_osc(struct input_ctx *);
146static void input_exit_osc(struct input_ctx *);
147static void input_enter_apc(struct input_ctx *);
148static void input_exit_apc(struct input_ctx *);
149static void input_enter_rename(struct input_ctx *);
150static void input_exit_rename(struct input_ctx *);
151
152/* Input state handlers. */
153static int input_print(struct input_ctx *);
154static int input_intermediate(struct input_ctx *);
155static int input_parameter(struct input_ctx *);
156static int input_input(struct input_ctx *);
157static int input_c0_dispatch(struct input_ctx *);
158static int input_esc_dispatch(struct input_ctx *);
159static int input_csi_dispatch(struct input_ctx *);
160static void input_csi_dispatch_rm(struct input_ctx *);
161static void input_csi_dispatch_rm_private(struct input_ctx *);
162static void input_csi_dispatch_sm(struct input_ctx *);
163static void input_csi_dispatch_sm_private(struct input_ctx *);
164static void input_csi_dispatch_winops(struct input_ctx *);
165static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
166static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
167static void input_csi_dispatch_sgr(struct input_ctx *);
168static int input_dcs_dispatch(struct input_ctx *);
169static int input_top_bit_set(struct input_ctx *);
170static int input_end_bel(struct input_ctx *);
171
172/* Command table comparison function. */
173static int input_table_compare(const void *, const void *);
174
175/* Command table entry. */
176struct input_table_entry {
177 int ch;
178 const char *interm;
179 int type;
180};
181
182/* Escape commands. */
183enum input_esc_type {
184 INPUT_ESC_DECALN,
185 INPUT_ESC_DECKPAM,
186 INPUT_ESC_DECKPNM,
187 INPUT_ESC_DECRC,
188 INPUT_ESC_DECSC,
189 INPUT_ESC_HTS,
190 INPUT_ESC_IND,
191 INPUT_ESC_NEL,
192 INPUT_ESC_RI,
193 INPUT_ESC_RIS,
194 INPUT_ESC_SCSG0_OFF,
195 INPUT_ESC_SCSG0_ON,
196 INPUT_ESC_SCSG1_OFF,
197 INPUT_ESC_SCSG1_ON,
198 INPUT_ESC_ST,
199};
200
201/* Escape command table. */
202static const struct input_table_entry input_esc_table[] = {
203 { '0', "(", INPUT_ESC_SCSG0_ON },
204 { '0', ")", INPUT_ESC_SCSG1_ON },
205 { '7', "", INPUT_ESC_DECSC },
206 { '8', "", INPUT_ESC_DECRC },
207 { '8', "#", INPUT_ESC_DECALN },
208 { '=', "", INPUT_ESC_DECKPAM },
209 { '>', "", INPUT_ESC_DECKPNM },
210 { 'B', "(", INPUT_ESC_SCSG0_OFF },
211 { 'B', ")", INPUT_ESC_SCSG1_OFF },
212 { 'D', "", INPUT_ESC_IND },
213 { 'E', "", INPUT_ESC_NEL },
214 { 'H', "", INPUT_ESC_HTS },
215 { 'M', "", INPUT_ESC_RI },
216 { '\\', "", INPUT_ESC_ST },
217 { 'c', "", INPUT_ESC_RIS },
218};
219
220/* Control (CSI) commands. */
221enum input_csi_type {
222 INPUT_CSI_CBT,
223 INPUT_CSI_CNL,
224 INPUT_CSI_CPL,
225 INPUT_CSI_CUB,
226 INPUT_CSI_CUD,
227 INPUT_CSI_CUF,
228 INPUT_CSI_CUP,
229 INPUT_CSI_CUU,
230 INPUT_CSI_DA,
231 INPUT_CSI_DA_TWO,
232 INPUT_CSI_DCH,
233 INPUT_CSI_DECSCUSR,
234 INPUT_CSI_DECSTBM,
235 INPUT_CSI_DL,
236 INPUT_CSI_DSR,
237 INPUT_CSI_ECH,
238 INPUT_CSI_ED,
239 INPUT_CSI_EL,
240 INPUT_CSI_HPA,
241 INPUT_CSI_ICH,
242 INPUT_CSI_IL,
243 INPUT_CSI_RCP,
244 INPUT_CSI_REP,
245 INPUT_CSI_RM,
246 INPUT_CSI_RM_PRIVATE,
247 INPUT_CSI_SCP,
248 INPUT_CSI_SD,
249 INPUT_CSI_SGR,
250 INPUT_CSI_SM,
251 INPUT_CSI_SM_PRIVATE,
252 INPUT_CSI_SU,
253 INPUT_CSI_TBC,
254 INPUT_CSI_VPA,
255 INPUT_CSI_WINOPS,
256};
257
258/* Control (CSI) command table. */
259static const struct input_table_entry input_csi_table[] = {
260 { '@', "", INPUT_CSI_ICH },
261 { 'A', "", INPUT_CSI_CUU },
262 { 'B', "", INPUT_CSI_CUD },
263 { 'C', "", INPUT_CSI_CUF },
264 { 'D', "", INPUT_CSI_CUB },
265 { 'E', "", INPUT_CSI_CNL },
266 { 'F', "", INPUT_CSI_CPL },
267 { 'G', "", INPUT_CSI_HPA },
268 { 'H', "", INPUT_CSI_CUP },
269 { 'J', "", INPUT_CSI_ED },
270 { 'K', "", INPUT_CSI_EL },
271 { 'L', "", INPUT_CSI_IL },
272 { 'M', "", INPUT_CSI_DL },
273 { 'P', "", INPUT_CSI_DCH },
274 { 'S', "", INPUT_CSI_SU },
275 { 'T', "", INPUT_CSI_SD },
276 { 'X', "", INPUT_CSI_ECH },
277 { 'Z', "", INPUT_CSI_CBT },
278 { '`', "", INPUT_CSI_HPA },
279 { 'b', "", INPUT_CSI_REP },
280 { 'c', "", INPUT_CSI_DA },
281 { 'c', ">", INPUT_CSI_DA_TWO },
282 { 'd', "", INPUT_CSI_VPA },
283 { 'f', "", INPUT_CSI_CUP },
284 { 'g', "", INPUT_CSI_TBC },
285 { 'h', "", INPUT_CSI_SM },
286 { 'h', "?", INPUT_CSI_SM_PRIVATE },
287 { 'l', "", INPUT_CSI_RM },
288 { 'l', "?", INPUT_CSI_RM_PRIVATE },
289 { 'm', "", INPUT_CSI_SGR },
290 { 'n', "", INPUT_CSI_DSR },
291 { 'q', " ", INPUT_CSI_DECSCUSR },
292 { 'r', "", INPUT_CSI_DECSTBM },
293 { 's', "", INPUT_CSI_SCP },
294 { 't', "", INPUT_CSI_WINOPS },
295 { 'u', "", INPUT_CSI_RCP },
296};
297
298/* Input transition. */
299struct input_transition {
300 int first;
301 int last;
302
303 int (*handler)(struct input_ctx *);
304 const struct input_state *state;
305};
306
307/* Input state. */
308struct input_state {
309 const char *name;
310 void (*enter)(struct input_ctx *);
311 void (*exit)(struct input_ctx *);
312 const struct input_transition *transitions;
313};
314
315/* State transitions available from all states. */
316#define INPUT_STATE_ANYWHERE \
317 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
318 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
319 { 0x1b, 0x1b, NULL, &input_state_esc_enter }
320
321/* Forward declarations of state tables. */
322static const struct input_transition input_state_ground_table[];
323static const struct input_transition input_state_esc_enter_table[];
324static const struct input_transition input_state_esc_intermediate_table[];
325static const struct input_transition input_state_csi_enter_table[];
326static const struct input_transition input_state_csi_parameter_table[];
327static const struct input_transition input_state_csi_intermediate_table[];
328static const struct input_transition input_state_csi_ignore_table[];
329static const struct input_transition input_state_dcs_enter_table[];
330static const struct input_transition input_state_dcs_parameter_table[];
331static const struct input_transition input_state_dcs_intermediate_table[];
332static const struct input_transition input_state_dcs_handler_table[];
333static const struct input_transition input_state_dcs_escape_table[];
334static const struct input_transition input_state_dcs_ignore_table[];
335static const struct input_transition input_state_osc_string_table[];
336static const struct input_transition input_state_apc_string_table[];
337static const struct input_transition input_state_rename_string_table[];
338static const struct input_transition input_state_consume_st_table[];
339
340/* ground state definition. */
341static const struct input_state input_state_ground = {
342 "ground",
343 input_ground, NULL,
344 input_state_ground_table
345};
346
347/* esc_enter state definition. */
348static const struct input_state input_state_esc_enter = {
349 "esc_enter",
350 input_clear, NULL,
351 input_state_esc_enter_table
352};
353
354/* esc_intermediate state definition. */
355static const struct input_state input_state_esc_intermediate = {
356 "esc_intermediate",
357 NULL, NULL,
358 input_state_esc_intermediate_table
359};
360
361/* csi_enter state definition. */
362static const struct input_state input_state_csi_enter = {
363 "csi_enter",
364 input_clear, NULL,
365 input_state_csi_enter_table
366};
367
368/* csi_parameter state definition. */
369static const struct input_state input_state_csi_parameter = {
370 "csi_parameter",
371 NULL, NULL,
372 input_state_csi_parameter_table
373};
374
375/* csi_intermediate state definition. */
376static const struct input_state input_state_csi_intermediate = {
377 "csi_intermediate",
378 NULL, NULL,
379 input_state_csi_intermediate_table
380};
381
382/* csi_ignore state definition. */
383static const struct input_state input_state_csi_ignore = {
384 "csi_ignore",
385 NULL, NULL,
386 input_state_csi_ignore_table
387};
388
389/* dcs_enter state definition. */
390static const struct input_state input_state_dcs_enter = {
391 "dcs_enter",
392 input_enter_dcs, NULL,
393 input_state_dcs_enter_table
394};
395
396/* dcs_parameter state definition. */
397static const struct input_state input_state_dcs_parameter = {
398 "dcs_parameter",
399 NULL, NULL,
400 input_state_dcs_parameter_table
401};
402
403/* dcs_intermediate state definition. */
404static const struct input_state input_state_dcs_intermediate = {
405 "dcs_intermediate",
406 NULL, NULL,
407 input_state_dcs_intermediate_table
408};
409
410/* dcs_handler state definition. */
411static const struct input_state input_state_dcs_handler = {
412 "dcs_handler",
413 NULL, NULL,
414 input_state_dcs_handler_table
415};
416
417/* dcs_escape state definition. */
418static const struct input_state input_state_dcs_escape = {
419 "dcs_escape",
420 NULL, NULL,
421 input_state_dcs_escape_table
422};
423
424/* dcs_ignore state definition. */
425static const struct input_state input_state_dcs_ignore = {
426 "dcs_ignore",
427 NULL, NULL,
428 input_state_dcs_ignore_table
429};
430
431/* osc_string state definition. */
432static const struct input_state input_state_osc_string = {
433 "osc_string",
434 input_enter_osc, input_exit_osc,
435 input_state_osc_string_table
436};
437
438/* apc_string state definition. */
439static const struct input_state input_state_apc_string = {
440 "apc_string",
441 input_enter_apc, input_exit_apc,
442 input_state_apc_string_table
443};
444
445/* rename_string state definition. */
446static const struct input_state input_state_rename_string = {
447 "rename_string",
448 input_enter_rename, input_exit_rename,
449 input_state_rename_string_table
450};
451
452/* consume_st state definition. */
453static const struct input_state input_state_consume_st = {
454 "consume_st",
455 input_enter_rename, NULL, /* rename also waits for ST */
456 input_state_consume_st_table
457};
458
459/* ground state table. */
460static const struct input_transition input_state_ground_table[] = {
461 INPUT_STATE_ANYWHERE,
462
463 { 0x00, 0x17, input_c0_dispatch, NULL },
464 { 0x19, 0x19, input_c0_dispatch, NULL },
465 { 0x1c, 0x1f, input_c0_dispatch, NULL },
466 { 0x20, 0x7e, input_print, NULL },
467 { 0x7f, 0x7f, NULL, NULL },
468 { 0x80, 0xff, input_top_bit_set, NULL },
469
470 { -1, -1, NULL, NULL }
471};
472
473/* esc_enter state table. */
474static const struct input_transition input_state_esc_enter_table[] = {
475 INPUT_STATE_ANYWHERE,
476
477 { 0x00, 0x17, input_c0_dispatch, NULL },
478 { 0x19, 0x19, input_c0_dispatch, NULL },
479 { 0x1c, 0x1f, input_c0_dispatch, NULL },
480 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
481 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
482 { 0x50, 0x50, NULL, &input_state_dcs_enter },
483 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
484 { 0x58, 0x58, NULL, &input_state_consume_st },
485 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
486 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
487 { 0x5b, 0x5b, NULL, &input_state_csi_enter },
488 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
489 { 0x5d, 0x5d, NULL, &input_state_osc_string },
490 { 0x5e, 0x5e, NULL, &input_state_consume_st },
491 { 0x5f, 0x5f, NULL, &input_state_apc_string },
492 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
493 { 0x6b, 0x6b, NULL, &input_state_rename_string },
494 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
495 { 0x7f, 0xff, NULL, NULL },
496
497 { -1, -1, NULL, NULL }
498};
499
500/* esc_intermediate state table. */
501static const struct input_transition input_state_esc_intermediate_table[] = {
502 INPUT_STATE_ANYWHERE,
503
504 { 0x00, 0x17, input_c0_dispatch, NULL },
505 { 0x19, 0x19, input_c0_dispatch, NULL },
506 { 0x1c, 0x1f, input_c0_dispatch, NULL },
507 { 0x20, 0x2f, input_intermediate, NULL },
508 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
509 { 0x7f, 0xff, NULL, NULL },
510
511 { -1, -1, NULL, NULL }
512};
513
514/* csi_enter state table. */
515static const struct input_transition input_state_csi_enter_table[] = {
516 INPUT_STATE_ANYWHERE,
517
518 { 0x00, 0x17, input_c0_dispatch, NULL },
519 { 0x19, 0x19, input_c0_dispatch, NULL },
520 { 0x1c, 0x1f, input_c0_dispatch, NULL },
521 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
522 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
523 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
524 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
525 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
526 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
527 { 0x7f, 0xff, NULL, NULL },
528
529 { -1, -1, NULL, NULL }
530};
531
532/* csi_parameter state table. */
533static const struct input_transition input_state_csi_parameter_table[] = {
534 INPUT_STATE_ANYWHERE,
535
536 { 0x00, 0x17, input_c0_dispatch, NULL },
537 { 0x19, 0x19, input_c0_dispatch, NULL },
538 { 0x1c, 0x1f, input_c0_dispatch, NULL },
539 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
540 { 0x30, 0x39, input_parameter, NULL },
541 { 0x3a, 0x3a, input_parameter, NULL },
542 { 0x3b, 0x3b, input_parameter, NULL },
543 { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
544 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
545 { 0x7f, 0xff, NULL, NULL },
546
547 { -1, -1, NULL, NULL }
548};
549
550/* csi_intermediate state table. */
551static const struct input_transition input_state_csi_intermediate_table[] = {
552 INPUT_STATE_ANYWHERE,
553
554 { 0x00, 0x17, input_c0_dispatch, NULL },
555 { 0x19, 0x19, input_c0_dispatch, NULL },
556 { 0x1c, 0x1f, input_c0_dispatch, NULL },
557 { 0x20, 0x2f, input_intermediate, NULL },
558 { 0x30, 0x3f, NULL, &input_state_csi_ignore },
559 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
560 { 0x7f, 0xff, NULL, NULL },
561
562 { -1, -1, NULL, NULL }
563};
564
565/* csi_ignore state table. */
566static const struct input_transition input_state_csi_ignore_table[] = {
567 INPUT_STATE_ANYWHERE,
568
569 { 0x00, 0x17, input_c0_dispatch, NULL },
570 { 0x19, 0x19, input_c0_dispatch, NULL },
571 { 0x1c, 0x1f, input_c0_dispatch, NULL },
572 { 0x20, 0x3f, NULL, NULL },
573 { 0x40, 0x7e, NULL, &input_state_ground },
574 { 0x7f, 0xff, NULL, NULL },
575
576 { -1, -1, NULL, NULL }
577};
578
579/* dcs_enter state table. */
580static const struct input_transition input_state_dcs_enter_table[] = {
581 INPUT_STATE_ANYWHERE,
582
583 { 0x00, 0x17, NULL, NULL },
584 { 0x19, 0x19, NULL, NULL },
585 { 0x1c, 0x1f, NULL, NULL },
586 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
587 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
588 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
589 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
590 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
591 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
592 { 0x7f, 0xff, NULL, NULL },
593
594 { -1, -1, NULL, NULL }
595};
596
597/* dcs_parameter state table. */
598static const struct input_transition input_state_dcs_parameter_table[] = {
599 INPUT_STATE_ANYWHERE,
600
601 { 0x00, 0x17, NULL, NULL },
602 { 0x19, 0x19, NULL, NULL },
603 { 0x1c, 0x1f, NULL, NULL },
604 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
605 { 0x30, 0x39, input_parameter, NULL },
606 { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
607 { 0x3b, 0x3b, input_parameter, NULL },
608 { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
609 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
610 { 0x7f, 0xff, NULL, NULL },
611
612 { -1, -1, NULL, NULL }
613};
614
615/* dcs_intermediate state table. */
616static const struct input_transition input_state_dcs_intermediate_table[] = {
617 INPUT_STATE_ANYWHERE,
618
619 { 0x00, 0x17, NULL, NULL },
620 { 0x19, 0x19, NULL, NULL },
621 { 0x1c, 0x1f, NULL, NULL },
622 { 0x20, 0x2f, input_intermediate, NULL },
623 { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
624 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
625 { 0x7f, 0xff, NULL, NULL },
626
627 { -1, -1, NULL, NULL }
628};
629
630/* dcs_handler state table. */
631static const struct input_transition input_state_dcs_handler_table[] = {
632 /* No INPUT_STATE_ANYWHERE */
633
634 { 0x00, 0x1a, input_input, NULL },
635 { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
636 { 0x1c, 0xff, input_input, NULL },
637
638 { -1, -1, NULL, NULL }
639};
640
641/* dcs_escape state table. */
642static const struct input_transition input_state_dcs_escape_table[] = {
643 /* No INPUT_STATE_ANYWHERE */
644
645 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
646 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
647 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
648
649 { -1, -1, NULL, NULL }
650};
651
652/* dcs_ignore state table. */
653static const struct input_transition input_state_dcs_ignore_table[] = {
654 INPUT_STATE_ANYWHERE,
655
656 { 0x00, 0x17, NULL, NULL },
657 { 0x19, 0x19, NULL, NULL },
658 { 0x1c, 0x1f, NULL, NULL },
659 { 0x20, 0xff, NULL, NULL },
660
661 { -1, -1, NULL, NULL }
662};
663
664/* osc_string state table. */
665static const struct input_transition input_state_osc_string_table[] = {
666 INPUT_STATE_ANYWHERE,
667
668 { 0x00, 0x06, NULL, NULL },
669 { 0x07, 0x07, input_end_bel, &input_state_ground },
670 { 0x08, 0x17, NULL, NULL },
671 { 0x19, 0x19, NULL, NULL },
672 { 0x1c, 0x1f, NULL, NULL },
673 { 0x20, 0xff, input_input, NULL },
674
675 { -1, -1, NULL, NULL }
676};
677
678/* apc_string state table. */
679static const struct input_transition input_state_apc_string_table[] = {
680 INPUT_STATE_ANYWHERE,
681
682 { 0x00, 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/* rename_string state table. */
691static const struct input_transition input_state_rename_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/* consume_st state table. */
703static const struct input_transition input_state_consume_st_table[] = {
704 INPUT_STATE_ANYWHERE,
705
706 { 0x00, 0x17, NULL, NULL },
707 { 0x19, 0x19, NULL, NULL },
708 { 0x1c, 0x1f, NULL, NULL },
709 { 0x20, 0xff, NULL, NULL },
710
711 { -1, -1, NULL, NULL }
712};
713
714/* Input table compare. */
715static int
716input_table_compare(const void *key, const void *value)
717{
718 const struct input_ctx *ictx = key;
719 const struct input_table_entry *entry = value;
720
721 if (ictx->ch != entry->ch)
722 return (ictx->ch - entry->ch);
723 return (strcmp(ictx->interm_buf, entry->interm));
724}
725
726/*
727 * Timer - if this expires then have been waiting for a terminator for too
728 * long, so reset to ground.
729 */
730static void
731input_timer_callback(__unused int fd, __unused short events, void *arg)
732{
733 struct input_ctx *ictx = arg;
734 struct window_pane *wp = ictx->wp;
735
736 log_debug("%s: %%%u %s expired" , __func__, wp->id, ictx->state->name);
737 input_reset(wp, 0);
738}
739
740/* Start the timer. */
741static void
742input_start_timer(struct input_ctx *ictx)
743{
744 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
745
746 event_del(&ictx->timer);
747 event_add(&ictx->timer, &tv);
748}
749
750/* Reset cell state to default. */
751static void
752input_reset_cell(struct input_ctx *ictx)
753{
754 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
755 ictx->cell.set = 0;
756 ictx->cell.g0set = ictx->cell.g1set = 0;
757
758 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
759 ictx->old_cx = 0;
760 ictx->old_cy = 0;
761}
762
763/* Save screen state. */
764static void
765input_save_state(struct input_ctx *ictx)
766{
767 struct screen_write_ctx *sctx = &ictx->ctx;
768 struct screen *s = sctx->s;
769
770 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
771 ictx->old_cx = s->cx;
772 ictx->old_cy = s->cy;
773 ictx->old_mode = s->mode;
774}
775
776/* Restore screen state. */
777static void
778input_restore_state(struct input_ctx *ictx)
779{
780 struct screen_write_ctx *sctx = &ictx->ctx;
781
782 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
783 if (ictx->old_mode & MODE_ORIGIN)
784 screen_write_mode_set(sctx, MODE_ORIGIN);
785 else
786 screen_write_mode_clear(sctx, MODE_ORIGIN);
787 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
788}
789
790/* Initialise input parser. */
791void
792input_init(struct window_pane *wp)
793{
794 struct input_ctx *ictx;
795
796 ictx = wp->ictx = xcalloc(1, sizeof *ictx);
797
798 ictx->input_space = INPUT_BUF_START;
799 ictx->input_buf = xmalloc(INPUT_BUF_START);
800
801 ictx->since_ground = evbuffer_new();
802 if (ictx->since_ground == NULL)
803 fatalx("out of memory");
804
805 evtimer_set(&ictx->timer, input_timer_callback, ictx);
806
807 input_reset(wp, 0);
808}
809
810/* Destroy input parser. */
811void
812input_free(struct window_pane *wp)
813{
814 struct input_ctx *ictx = wp->ictx;
815 u_int i;
816
817 for (i = 0; i < ictx->param_list_len; i++) {
818 if (ictx->param_list[i].type == INPUT_STRING)
819 free(ictx->param_list[i].str);
820 }
821
822 event_del(&ictx->timer);
823
824 free(ictx->input_buf);
825 evbuffer_free(ictx->since_ground);
826
827 free(ictx);
828 wp->ictx = NULL;
829}
830
831/* Reset input state and clear screen. */
832void
833input_reset(struct window_pane *wp, int clear)
834{
835 struct input_ctx *ictx = wp->ictx;
836 struct screen_write_ctx *sctx = &ictx->ctx;
837
838 input_reset_cell(ictx);
839
840 if (clear) {
841 if (TAILQ_EMPTY(&wp->modes))
842 screen_write_start(sctx, wp, &wp->base);
843 else
844 screen_write_start(sctx, NULL, &wp->base);
845 screen_write_reset(sctx);
846 screen_write_stop(sctx);
847 }
848
849 input_clear(ictx);
850
851 ictx->last = -1;
852
853 ictx->state = &input_state_ground;
854 ictx->flags = 0;
855}
856
857/* Return pending data. */
858struct evbuffer *
859input_pending(struct window_pane *wp)
860{
861 return (wp->ictx->since_ground);
862}
863
864/* Change input state. */
865static void
866input_set_state(struct window_pane *wp, const struct input_transition *itr)
867{
868 struct input_ctx *ictx = wp->ictx;
869
870 if (ictx->state->exit != NULL)
871 ictx->state->exit(ictx);
872 ictx->state = itr->state;
873 if (ictx->state->enter != NULL)
874 ictx->state->enter(ictx);
875}
876
877/* Parse input. */
878void
879input_parse(struct window_pane *wp)
880{
881 struct evbuffer *evb = wp->event->input;
882
883 input_parse_buffer(wp, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb));
884 evbuffer_drain(evb, EVBUFFER_LENGTH(evb));
885}
886
887/* Parse given input. */
888void
889input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
890{
891 struct input_ctx *ictx = wp->ictx;
892 struct screen_write_ctx *sctx = &ictx->ctx;
893 const struct input_state *state = NULL;
894 const struct input_transition *itr = NULL;
895 size_t off = 0;
896
897 if (len == 0)
898 return;
899
900 window_update_activity(wp->window);
901 wp->flags |= PANE_CHANGED;
902 notify_input(wp, buf, len);
903
904 /*
905 * Open the screen. Use NULL wp if there is a mode set as don't want to
906 * update the tty.
907 */
908 if (TAILQ_EMPTY(&wp->modes))
909 screen_write_start(sctx, wp, &wp->base);
910 else
911 screen_write_start(sctx, NULL, &wp->base);
912 ictx->wp = wp;
913
914 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
915 ictx->state->name, len, (int)len, buf);
916
917 /* Parse the input. */
918 while (off < len) {
919 ictx->ch = buf[off++];
920
921 /* Find the transition. */
922 if (ictx->state != state ||
923 itr == NULL ||
924 ictx->ch < itr->first ||
925 ictx->ch > itr->last) {
926 itr = ictx->state->transitions;
927 while (itr->first != -1 && itr->last != -1) {
928 if (ictx->ch >= itr->first &&
929 ictx->ch <= itr->last)
930 break;
931 itr++;
932 }
933 if (itr->first == -1 || itr->last == -1) {
934 /* No transition? Eh? */
935 fatalx("no transition from state");
936 }
937 }
938 state = ictx->state;
939
940 /*
941 * Any state except print stops the current collection. This is
942 * an optimization to avoid checking if the attributes have
943 * changed for every character. It will stop unnecessarily for
944 * sequences that don't make a terminal change, but they should
945 * be the minority.
946 */
947 if (itr->handler != input_print)
948 screen_write_collect_end(sctx);
949
950 /*
951 * Execute the handler, if any. Don't switch state if it
952 * returns non-zero.
953 */
954 if (itr->handler != NULL && itr->handler(ictx) != 0)
955 continue;
956
957 /* And switch state, if necessary. */
958 if (itr->state != NULL)
959 input_set_state(wp, itr);
960
961 /* If not in ground state, save input. */
962 if (ictx->state != &input_state_ground)
963 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
964 }
965
966 /* Close the screen. */
967 screen_write_stop(sctx);
968}
969
970/* Split the parameter list (if any). */
971static int
972input_split(struct input_ctx *ictx)
973{
974 const char *errstr;
975 char *ptr, *out;
976 struct input_param *ip;
977 u_int i;
978
979 for (i = 0; i < ictx->param_list_len; i++) {
980 if (ictx->param_list[i].type == INPUT_STRING)
981 free(ictx->param_list[i].str);
982 }
983 ictx->param_list_len = 0;
984
985 if (ictx->param_len == 0)
986 return (0);
987 ip = &ictx->param_list[0];
988
989 ptr = ictx->param_buf;
990 while ((out = strsep(&ptr, ";")) != NULL) {
991 if (*out == '\0')
992 ip->type = INPUT_MISSING;
993 else {
994 if (strchr(out, ':') != NULL) {
995 ip->type = INPUT_STRING;
996 ip->str = xstrdup(out);
997 } else {
998 ip->type = INPUT_NUMBER;
999 ip->num = strtonum(out, 0, INT_MAX, &errstr);
1000 if (errstr != NULL)
1001 return (-1);
1002 }
1003 }
1004 ip = &ictx->param_list[++ictx->param_list_len];
1005 if (ictx->param_list_len == nitems(ictx->param_list))
1006 return (-1);
1007 }
1008
1009 for (i = 0; i < ictx->param_list_len; i++) {
1010 ip = &ictx->param_list[i];
1011 if (ip->type == INPUT_MISSING)
1012 log_debug("parameter %u: missing", i);
1013 else if (ip->type == INPUT_STRING)
1014 log_debug("parameter %u: string %s", i, ip->str);
1015 else if (ip->type == INPUT_NUMBER)
1016 log_debug("parameter %u: number %d", i, ip->num);
1017 }
1018
1019 return (0);
1020}
1021
1022/* Get an argument or return default value. */
1023static int
1024input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1025{
1026 struct input_param *ip;
1027 int retval;
1028
1029 if (validx >= ictx->param_list_len)
1030 return (defval);
1031 ip = &ictx->param_list[validx];
1032 if (ip->type == INPUT_MISSING)
1033 return (defval);
1034 if (ip->type == INPUT_STRING)
1035 return (-1);
1036 retval = ip->num;
1037 if (retval < minval)
1038 return (minval);
1039 return (retval);
1040}
1041
1042/* Reply to terminal query. */
1043static void
1044input_reply(struct input_ctx *ictx, const char *fmt, ...)
1045{
1046 va_list ap;
1047 char *reply;
1048
1049 va_start(ap, fmt);
1050 xvasprintf(&reply, fmt, ap);
1051 va_end(ap);
1052
1053 bufferevent_write(ictx->wp->event, reply, strlen(reply));
1054 free(reply);
1055}
1056
1057/* Clear saved state. */
1058static void
1059input_clear(struct input_ctx *ictx)
1060{
1061 event_del(&ictx->timer);
1062
1063 *ictx->interm_buf = '\0';
1064 ictx->interm_len = 0;
1065
1066 *ictx->param_buf = '\0';
1067 ictx->param_len = 0;
1068
1069 *ictx->input_buf = '\0';
1070 ictx->input_len = 0;
1071
1072 ictx->input_end = INPUT_END_ST;
1073
1074 ictx->flags &= ~INPUT_DISCARD;
1075}
1076
1077/* Reset for ground state. */
1078static void
1079input_ground(struct input_ctx *ictx)
1080{
1081 event_del(&ictx->timer);
1082 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1083
1084 if (ictx->input_space > INPUT_BUF_START) {
1085 ictx->input_space = INPUT_BUF_START;
1086 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1087 }
1088}
1089
1090/* Output this character to the screen. */
1091static int
1092input_print(struct input_ctx *ictx)
1093{
1094 struct screen_write_ctx *sctx = &ictx->ctx;
1095 int set;
1096
1097 ictx->utf8started = 0; /* can't be valid UTF-8 */
1098
1099 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1100 if (set == 1)
1101 ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1102 else
1103 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1104
1105 utf8_set(&ictx->cell.cell.data, ictx->ch);
1106 screen_write_collect_add(sctx, &ictx->cell.cell);
1107 ictx->last = ictx->ch;
1108
1109 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1110
1111 return (0);
1112}
1113
1114/* Collect intermediate string. */
1115static int
1116input_intermediate(struct input_ctx *ictx)
1117{
1118 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1119 ictx->flags |= INPUT_DISCARD;
1120 else {
1121 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1122 ictx->interm_buf[ictx->interm_len] = '\0';
1123 }
1124
1125 return (0);
1126}
1127
1128/* Collect parameter string. */
1129static int
1130input_parameter(struct input_ctx *ictx)
1131{
1132 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1133 ictx->flags |= INPUT_DISCARD;
1134 else {
1135 ictx->param_buf[ictx->param_len++] = ictx->ch;
1136 ictx->param_buf[ictx->param_len] = '\0';
1137 }
1138
1139 return (0);
1140}
1141
1142/* Collect input string. */
1143static int
1144input_input(struct input_ctx *ictx)
1145{
1146 size_t available;
1147
1148 available = ictx->input_space;
1149 while (ictx->input_len + 1 >= available) {
1150 available *= 2;
1151 if (available > INPUT_BUF_LIMIT) {
1152 ictx->flags |= INPUT_DISCARD;
1153 return (0);
1154 }
1155 ictx->input_buf = xrealloc(ictx->input_buf, available);
1156 ictx->input_space = available;
1157 }
1158 ictx->input_buf[ictx->input_len++] = ictx->ch;
1159 ictx->input_buf[ictx->input_len] = '\0';
1160
1161 return (0);
1162}
1163
1164/* Execute C0 control sequence. */
1165static int
1166input_c0_dispatch(struct input_ctx *ictx)
1167{
1168 struct screen_write_ctx *sctx = &ictx->ctx;
1169 struct window_pane *wp = ictx->wp;
1170 struct screen *s = sctx->s;
1171
1172 ictx->utf8started = 0; /* can't be valid UTF-8 */
1173
1174 log_debug("%s: '%c'", __func__, ictx->ch);
1175
1176 switch (ictx->ch) {
1177 case '\000': /* NUL */
1178 break;
1179 case '\007': /* BEL */
1180 alerts_queue(wp->window, WINDOW_BELL);
1181 break;
1182 case '\010': /* BS */
1183 screen_write_backspace(sctx);
1184 break;
1185 case '\011': /* HT */
1186 /* Don't tab beyond the end of the line. */
1187 if (s->cx >= screen_size_x(s) - 1)
1188 break;
1189
1190 /* Find the next tab point, or use the last column if none. */
1191 do {
1192 s->cx++;
1193 if (bit_test(s->tabs, s->cx))
1194 break;
1195 } while (s->cx < screen_size_x(s) - 1);
1196 break;
1197 case '\012': /* LF */
1198 case '\013': /* VT */
1199 case '\014': /* FF */
1200 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1201 if (s->mode & MODE_CRLF)
1202 screen_write_carriagereturn(sctx);
1203 break;
1204 case '\015': /* CR */
1205 screen_write_carriagereturn(sctx);
1206 break;
1207 case '\016': /* SO */
1208 ictx->cell.set = 1;
1209 break;
1210 case '\017': /* SI */
1211 ictx->cell.set = 0;
1212 break;
1213 default:
1214 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1215 break;
1216 }
1217
1218 ictx->last = -1;
1219 return (0);
1220}
1221
1222/* Execute escape sequence. */
1223static int
1224input_esc_dispatch(struct input_ctx *ictx)
1225{
1226 struct screen_write_ctx *sctx = &ictx->ctx;
1227 struct screen *s = sctx->s;
1228 struct input_table_entry *entry;
1229
1230 if (ictx->flags & INPUT_DISCARD)
1231 return (0);
1232 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1233
1234 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1235 sizeof input_esc_table[0], input_table_compare);
1236 if (entry == NULL) {
1237 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1238 return (0);
1239 }
1240
1241 switch (entry->type) {
1242 case INPUT_ESC_RIS:
1243 window_pane_reset_palette(ictx->wp);
1244 input_reset_cell(ictx);
1245 screen_write_reset(sctx);
1246 break;
1247 case INPUT_ESC_IND:
1248 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1249 break;
1250 case INPUT_ESC_NEL:
1251 screen_write_carriagereturn(sctx);
1252 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1253 break;
1254 case INPUT_ESC_HTS:
1255 if (s->cx < screen_size_x(s))
1256 bit_set(s->tabs, s->cx);
1257 break;
1258 case INPUT_ESC_RI:
1259 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1260 break;
1261 case INPUT_ESC_DECKPAM:
1262 screen_write_mode_set(sctx, MODE_KKEYPAD);
1263 break;
1264 case INPUT_ESC_DECKPNM:
1265 screen_write_mode_clear(sctx, MODE_KKEYPAD);
1266 break;
1267 case INPUT_ESC_DECSC:
1268 input_save_state(ictx);
1269 break;
1270 case INPUT_ESC_DECRC:
1271 input_restore_state(ictx);
1272 break;
1273 case INPUT_ESC_DECALN:
1274 screen_write_alignmenttest(sctx);
1275 break;
1276 case INPUT_ESC_SCSG0_ON:
1277 ictx->cell.g0set = 1;
1278 break;
1279 case INPUT_ESC_SCSG0_OFF:
1280 ictx->cell.g0set = 0;
1281 break;
1282 case INPUT_ESC_SCSG1_ON:
1283 ictx->cell.g1set = 1;
1284 break;
1285 case INPUT_ESC_SCSG1_OFF:
1286 ictx->cell.g1set = 0;
1287 break;
1288 case INPUT_ESC_ST:
1289 /* ST terminates OSC but the state transition already did it. */
1290 break;
1291 }
1292
1293 ictx->last = -1;
1294 return (0);
1295}
1296
1297/* Execute control sequence. */
1298static int
1299input_csi_dispatch(struct input_ctx *ictx)
1300{
1301 struct screen_write_ctx *sctx = &ictx->ctx;
1302 struct screen *s = sctx->s;
1303 struct input_table_entry *entry;
1304 int i, n, m;
1305 u_int cx, bg = ictx->cell.cell.bg;
1306 char *copy, *cp;
1307
1308 if (ictx->flags & INPUT_DISCARD)
1309 return (0);
1310
1311 log_debug("%s: '%c' \"%s\" \"%s\"",
1312 __func__, ictx->ch, ictx->interm_buf, ictx->param_buf);
1313
1314 if (input_split(ictx) != 0)
1315 return (0);
1316
1317 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1318 sizeof input_csi_table[0], input_table_compare);
1319 if (entry == NULL) {
1320 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1321 return (0);
1322 }
1323
1324 switch (entry->type) {
1325 case INPUT_CSI_CBT:
1326 /* Find the previous tab point, n times. */
1327 cx = s->cx;
1328 if (cx > screen_size_x(s) - 1)
1329 cx = screen_size_x(s) - 1;
1330 n = input_get(ictx, 0, 1, 1);
1331 if (n == -1)
1332 break;
1333 while (cx > 0 && n-- > 0) {
1334 do
1335 cx--;
1336 while (cx > 0 && !bit_test(s->tabs, cx));
1337 }
1338 s->cx = cx;
1339 break;
1340 case INPUT_CSI_CUB:
1341 n = input_get(ictx, 0, 1, 1);
1342 if (n != -1)
1343 screen_write_cursorleft(sctx, n);
1344 break;
1345 case INPUT_CSI_CUD:
1346 n = input_get(ictx, 0, 1, 1);
1347 if (n != -1)
1348 screen_write_cursordown(sctx, n);
1349 break;
1350 case INPUT_CSI_CUF:
1351 n = input_get(ictx, 0, 1, 1);
1352 if (n != -1)
1353 screen_write_cursorright(sctx, n);
1354 break;
1355 case INPUT_CSI_CUP:
1356 n = input_get(ictx, 0, 1, 1);
1357 m = input_get(ictx, 1, 1, 1);
1358 if (n != -1 && m != -1)
1359 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1360 break;
1361 case INPUT_CSI_WINOPS:
1362 input_csi_dispatch_winops(ictx);
1363 break;
1364 case INPUT_CSI_CUU:
1365 n = input_get(ictx, 0, 1, 1);
1366 if (n != -1)
1367 screen_write_cursorup(sctx, n);
1368 break;
1369 case INPUT_CSI_CNL:
1370 n = input_get(ictx, 0, 1, 1);
1371 if (n != -1) {
1372 screen_write_carriagereturn(sctx);
1373 screen_write_cursordown(sctx, n);
1374 }
1375 break;
1376 case INPUT_CSI_CPL:
1377 n = input_get(ictx, 0, 1, 1);
1378 if (n != -1) {
1379 screen_write_carriagereturn(sctx);
1380 screen_write_cursorup(sctx, n);
1381 }
1382 break;
1383 case INPUT_CSI_DA:
1384 switch (input_get(ictx, 0, 0, 0)) {
1385 case -1:
1386 break;
1387 case 0:
1388 input_reply(ictx, "\033[?1;2c");
1389 break;
1390 default:
1391 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1392 break;
1393 }
1394 break;
1395 case INPUT_CSI_DA_TWO:
1396 switch (input_get(ictx, 0, 0, 0)) {
1397 case -1:
1398 break;
1399 case 0:
1400 input_reply(ictx, "\033[>84;0;0c");
1401 break;
1402 default:
1403 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1404 break;
1405 }
1406 break;
1407 case INPUT_CSI_ECH:
1408 n = input_get(ictx, 0, 1, 1);
1409 if (n != -1)
1410 screen_write_clearcharacter(sctx, n, bg);
1411 break;
1412 case INPUT_CSI_DCH:
1413 n = input_get(ictx, 0, 1, 1);
1414 if (n != -1)
1415 screen_write_deletecharacter(sctx, n, bg);
1416 break;
1417 case INPUT_CSI_DECSTBM:
1418 n = input_get(ictx, 0, 1, 1);
1419 m = input_get(ictx, 1, 1, screen_size_y(s));
1420 if (n != -1 && m != -1)
1421 screen_write_scrollregion(sctx, n - 1, m - 1);
1422 break;
1423 case INPUT_CSI_DL:
1424 n = input_get(ictx, 0, 1, 1);
1425 if (n != -1)
1426 screen_write_deleteline(sctx, n, bg);
1427 break;
1428 case INPUT_CSI_DSR:
1429 switch (input_get(ictx, 0, 0, 0)) {
1430 case -1:
1431 break;
1432 case 5:
1433 input_reply(ictx, "\033[0n");
1434 break;
1435 case 6:
1436 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1437 break;
1438 case 1337: /* Terminal version, from iTerm2. */
1439 copy = xstrdup(getversion());
1440 for (cp = copy; *cp != '\0'; cp++)
1441 *cp = toupper((u_char)*cp);
1442 input_reply(ictx, "\033[TMUX %sn", copy);
1443 free(copy);
1444 break;
1445 default:
1446 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1447 break;
1448 }
1449 break;
1450 case INPUT_CSI_ED:
1451 switch (input_get(ictx, 0, 0, 0)) {
1452 case -1:
1453 break;
1454 case 0:
1455 screen_write_clearendofscreen(sctx, bg);
1456 break;
1457 case 1:
1458 screen_write_clearstartofscreen(sctx, bg);
1459 break;
1460 case 2:
1461 screen_write_clearscreen(sctx, bg);
1462 break;
1463 case 3:
1464 if (input_get(ictx, 1, 0, 0) == 0) {
1465 /*
1466 * Linux console extension to clear history
1467 * (for example before locking the screen).
1468 */
1469 screen_write_clearhistory(sctx);
1470 }
1471 break;
1472 default:
1473 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1474 break;
1475 }
1476 break;
1477 case INPUT_CSI_EL:
1478 switch (input_get(ictx, 0, 0, 0)) {
1479 case -1:
1480 break;
1481 case 0:
1482 screen_write_clearendofline(sctx, bg);
1483 break;
1484 case 1:
1485 screen_write_clearstartofline(sctx, bg);
1486 break;
1487 case 2:
1488 screen_write_clearline(sctx, bg);
1489 break;
1490 default:
1491 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1492 break;
1493 }
1494 break;
1495 case INPUT_CSI_HPA:
1496 n = input_get(ictx, 0, 1, 1);
1497 if (n != -1)
1498 screen_write_cursormove(sctx, n - 1, -1, 1);
1499 break;
1500 case INPUT_CSI_ICH:
1501 n = input_get(ictx, 0, 1, 1);
1502 if (n != -1)
1503 screen_write_insertcharacter(sctx, n, bg);
1504 break;
1505 case INPUT_CSI_IL:
1506 n = input_get(ictx, 0, 1, 1);
1507 if (n != -1)
1508 screen_write_insertline(sctx, n, bg);
1509 break;
1510 case INPUT_CSI_REP:
1511 n = input_get(ictx, 0, 1, 1);
1512 if (n == -1)
1513 break;
1514
1515 if (ictx->last == -1)
1516 break;
1517 ictx->ch = ictx->last;
1518
1519 for (i = 0; i < n; i++)
1520 input_print(ictx);
1521 break;
1522 case INPUT_CSI_RCP:
1523 input_restore_state(ictx);
1524 break;
1525 case INPUT_CSI_RM:
1526 input_csi_dispatch_rm(ictx);
1527 break;
1528 case INPUT_CSI_RM_PRIVATE:
1529 input_csi_dispatch_rm_private(ictx);
1530 break;
1531 case INPUT_CSI_SCP:
1532 input_save_state(ictx);
1533 break;
1534 case INPUT_CSI_SGR:
1535 input_csi_dispatch_sgr(ictx);
1536 break;
1537 case INPUT_CSI_SM:
1538 input_csi_dispatch_sm(ictx);
1539 break;
1540 case INPUT_CSI_SM_PRIVATE:
1541 input_csi_dispatch_sm_private(ictx);
1542 break;
1543 case INPUT_CSI_SU:
1544 n = input_get(ictx, 0, 1, 1);
1545 if (n != -1)
1546 screen_write_scrollup(sctx, n, bg);
1547 break;
1548 case INPUT_CSI_SD:
1549 n = input_get(ictx, 0, 1, 1);
1550 if (n != -1)
1551 screen_write_scrolldown(sctx, n, bg);
1552 break;
1553 case INPUT_CSI_TBC:
1554 switch (input_get(ictx, 0, 0, 0)) {
1555 case -1:
1556 break;
1557 case 0:
1558 if (s->cx < screen_size_x(s))
1559 bit_clear(s->tabs, s->cx);
1560 break;
1561 case 3:
1562 bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1563 break;
1564 default:
1565 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1566 break;
1567 }
1568 break;
1569 case INPUT_CSI_VPA:
1570 n = input_get(ictx, 0, 1, 1);
1571 if (n != -1)
1572 screen_write_cursormove(sctx, -1, n - 1, 1);
1573 break;
1574 case INPUT_CSI_DECSCUSR:
1575 n = input_get(ictx, 0, 0, 0);
1576 if (n != -1)
1577 screen_set_cursor_style(s, n);
1578 break;
1579 }
1580
1581 ictx->last = -1;
1582 return (0);
1583}
1584
1585/* Handle CSI RM. */
1586static void
1587input_csi_dispatch_rm(struct input_ctx *ictx)
1588{
1589 struct screen_write_ctx *sctx = &ictx->ctx;
1590 u_int i;
1591
1592 for (i = 0; i < ictx->param_list_len; i++) {
1593 switch (input_get(ictx, i, 0, -1)) {
1594 case -1:
1595 break;
1596 case 4: /* IRM */
1597 screen_write_mode_clear(sctx, MODE_INSERT);
1598 break;
1599 case 34:
1600 screen_write_mode_set(sctx, MODE_BLINKING);
1601 break;
1602 default:
1603 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1604 break;
1605 }
1606 }
1607}
1608
1609/* Handle CSI private RM. */
1610static void
1611input_csi_dispatch_rm_private(struct input_ctx *ictx)
1612{
1613 struct screen_write_ctx *sctx = &ictx->ctx;
1614 struct window_pane *wp = ictx->wp;
1615 u_int i;
1616
1617 for (i = 0; i < ictx->param_list_len; i++) {
1618 switch (input_get(ictx, i, 0, -1)) {
1619 case -1:
1620 break;
1621 case 1: /* DECCKM */
1622 screen_write_mode_clear(sctx, MODE_KCURSOR);
1623 break;
1624 case 3: /* DECCOLM */
1625 screen_write_cursormove(sctx, 0, 0, 1);
1626 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1627 break;
1628 case 6: /* DECOM */
1629 screen_write_mode_clear(sctx, MODE_ORIGIN);
1630 screen_write_cursormove(sctx, 0, 0, 1);
1631 break;
1632 case 7: /* DECAWM */
1633 screen_write_mode_clear(sctx, MODE_WRAP);
1634 break;
1635 case 12:
1636 screen_write_mode_clear(sctx, MODE_BLINKING);
1637 break;
1638 case 25: /* TCEM */
1639 screen_write_mode_clear(sctx, MODE_CURSOR);
1640 break;
1641 case 1000:
1642 case 1001:
1643 case 1002:
1644 case 1003:
1645 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1646 break;
1647 case 1004:
1648 screen_write_mode_clear(sctx, MODE_FOCUSON);
1649 break;
1650 case 1005:
1651 screen_write_mode_clear(sctx, MODE_MOUSE_UTF8);
1652 break;
1653 case 1006:
1654 screen_write_mode_clear(sctx, MODE_MOUSE_SGR);
1655 break;
1656 case 47:
1657 case 1047:
1658 window_pane_alternate_off(wp, &ictx->cell.cell, 0);
1659 break;
1660 case 1049:
1661 window_pane_alternate_off(wp, &ictx->cell.cell, 1);
1662 break;
1663 case 2004:
1664 screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
1665 break;
1666 default:
1667 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1668 break;
1669 }
1670 }
1671}
1672
1673/* Handle CSI SM. */
1674static void
1675input_csi_dispatch_sm(struct input_ctx *ictx)
1676{
1677 struct screen_write_ctx *sctx = &ictx->ctx;
1678 u_int i;
1679
1680 for (i = 0; i < ictx->param_list_len; i++) {
1681 switch (input_get(ictx, i, 0, -1)) {
1682 case -1:
1683 break;
1684 case 4: /* IRM */
1685 screen_write_mode_set(sctx, MODE_INSERT);
1686 break;
1687 case 34:
1688 screen_write_mode_clear(sctx, MODE_BLINKING);
1689 break;
1690 default:
1691 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1692 break;
1693 }
1694 }
1695}
1696
1697/* Handle CSI private SM. */
1698static void
1699input_csi_dispatch_sm_private(struct input_ctx *ictx)
1700{
1701 struct screen_write_ctx *sctx = &ictx->ctx;
1702 struct window_pane *wp = ictx->wp;
1703 u_int i;
1704
1705 for (i = 0; i < ictx->param_list_len; i++) {
1706 switch (input_get(ictx, i, 0, -1)) {
1707 case -1:
1708 break;
1709 case 1: /* DECCKM */
1710 screen_write_mode_set(sctx, MODE_KCURSOR);
1711 break;
1712 case 3: /* DECCOLM */
1713 screen_write_cursormove(sctx, 0, 0, 1);
1714 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1715 break;
1716 case 6: /* DECOM */
1717 screen_write_mode_set(sctx, MODE_ORIGIN);
1718 screen_write_cursormove(sctx, 0, 0, 1);
1719 break;
1720 case 7: /* DECAWM */
1721 screen_write_mode_set(sctx, MODE_WRAP);
1722 break;
1723 case 12:
1724 screen_write_mode_set(sctx, MODE_BLINKING);
1725 break;
1726 case 25: /* TCEM */
1727 screen_write_mode_set(sctx, MODE_CURSOR);
1728 break;
1729 case 1000:
1730 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1731 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD);
1732 break;
1733 case 1002:
1734 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1735 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON);
1736 break;
1737 case 1003:
1738 screen_write_mode_clear(sctx, ALL_MOUSE_MODES);
1739 screen_write_mode_set(sctx, MODE_MOUSE_ALL);
1740 break;
1741 case 1004:
1742 if (sctx->s->mode & MODE_FOCUSON)
1743 break;
1744 screen_write_mode_set(sctx, MODE_FOCUSON);
1745 wp->flags |= PANE_FOCUSPUSH; /* force update */
1746 break;
1747 case 1005:
1748 screen_write_mode_set(sctx, MODE_MOUSE_UTF8);
1749 break;
1750 case 1006:
1751 screen_write_mode_set(sctx, MODE_MOUSE_SGR);
1752 break;
1753 case 47:
1754 case 1047:
1755 window_pane_alternate_on(wp, &ictx->cell.cell, 0);
1756 break;
1757 case 1049:
1758 window_pane_alternate_on(wp, &ictx->cell.cell, 1);
1759 break;
1760 case 2004:
1761 screen_write_mode_set(sctx, MODE_BRACKETPASTE);
1762 break;
1763 default:
1764 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1765 break;
1766 }
1767 }
1768}
1769
1770/* Handle CSI window operations. */
1771static void
1772input_csi_dispatch_winops(struct input_ctx *ictx)
1773{
1774 struct screen_write_ctx *sctx = &ictx->ctx;
1775 struct window_pane *wp = ictx->wp;
1776 int n, m;
1777
1778 m = 0;
1779 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1780 switch (n) {
1781 case 1:
1782 case 2:
1783 case 5:
1784 case 6:
1785 case 7:
1786 case 11:
1787 case 13:
1788 case 14:
1789 case 19:
1790 case 20:
1791 case 21:
1792 case 24:
1793 break;
1794 case 3:
1795 case 4:
1796 case 8:
1797 m++;
1798 if (input_get(ictx, m, 0, -1) == -1)
1799 return;
1800 /* FALLTHROUGH */
1801 case 9:
1802 case 10:
1803 m++;
1804 if (input_get(ictx, m, 0, -1) == -1)
1805 return;
1806 break;
1807 case 22:
1808 m++;
1809 switch (input_get(ictx, m, 0, -1)) {
1810 case -1:
1811 return;
1812 case 0:
1813 case 2:
1814 screen_push_title(sctx->s);
1815 break;
1816 }
1817 break;
1818 case 23:
1819 m++;
1820 switch (input_get(ictx, m, 0, -1)) {
1821 case -1:
1822 return;
1823 case 0:
1824 case 2:
1825 screen_pop_title(sctx->s);
1826 server_status_window(ictx->wp->window);
1827 break;
1828 }
1829 break;
1830 case 18:
1831 input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx);
1832 break;
1833 default:
1834 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1835 break;
1836 }
1837 m++;
1838 }
1839}
1840
1841/* Helper for 256 colour SGR. */
1842static int
1843input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1844{
1845 struct grid_cell *gc = &ictx->cell.cell;
1846
1847 if (c == -1 || c > 255) {
1848 if (fgbg == 38)
1849 gc->fg = 8;
1850 else if (fgbg == 48)
1851 gc->bg = 8;
1852 } else {
1853 if (fgbg == 38)
1854 gc->fg = c | COLOUR_FLAG_256;
1855 else if (fgbg == 48)
1856 gc->bg = c | COLOUR_FLAG_256;
1857 else if (fgbg == 58)
1858 gc->us = c | COLOUR_FLAG_256;
1859 }
1860 return (1);
1861}
1862
1863/* Handle CSI SGR for 256 colours. */
1864static void
1865input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1866{
1867 int c;
1868
1869 c = input_get(ictx, (*i) + 1, 0, -1);
1870 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1871 (*i)++;
1872}
1873
1874/* Helper for RGB colour SGR. */
1875static int
1876input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1877 int b)
1878{
1879 struct grid_cell *gc = &ictx->cell.cell;
1880
1881 if (r == -1 || r > 255)
1882 return (0);
1883 if (g == -1 || g > 255)
1884 return (0);
1885 if (b == -1 || b > 255)
1886 return (0);
1887
1888 if (fgbg == 38)
1889 gc->fg = colour_join_rgb(r, g, b);
1890 else if (fgbg == 48)
1891 gc->bg = colour_join_rgb(r, g, b);
1892 else if (fgbg == 58)
1893 gc->us = colour_join_rgb(r, g, b);
1894 return (1);
1895}
1896
1897/* Handle CSI SGR for RGB colours. */
1898static void
1899input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
1900{
1901 int r, g, b;
1902
1903 r = input_get(ictx, (*i) + 1, 0, -1);
1904 g = input_get(ictx, (*i) + 2, 0, -1);
1905 b = input_get(ictx, (*i) + 3, 0, -1);
1906 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
1907 (*i) += 3;
1908}
1909
1910/* Handle CSI SGR with a ISO parameter. */
1911static void
1912input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
1913{
1914 struct grid_cell *gc = &ictx->cell.cell;
1915 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
1916 int p[8];
1917 u_int n;
1918 const char *errstr;
1919
1920 for (n = 0; n < nitems(p); n++)
1921 p[n] = -1;
1922 n = 0;
1923
1924 ptr = copy = xstrdup(s);
1925 while ((out = strsep(&ptr, ":")) != NULL) {
1926 if (*out != '\0') {
1927 p[n++] = strtonum(out, 0, INT_MAX, &errstr);
1928 if (errstr != NULL || n == nitems(p)) {
1929 free(copy);
1930 return;
1931 }
1932 } else
1933 n++;
1934 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
1935 }
1936 free(copy);
1937
1938 if (n == 0)
1939 return;
1940 if (p[0] == 4) {
1941 if (n != 2)
1942 return;
1943 switch (p[1]) {
1944 case 0:
1945 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
1946 break;
1947 case 1:
1948 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
1949 gc->attr |= GRID_ATTR_UNDERSCORE;
1950 break;
1951 case 2:
1952 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
1953 gc->attr |= GRID_ATTR_UNDERSCORE_2;
1954 break;
1955 case 3:
1956 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
1957 gc->attr |= GRID_ATTR_UNDERSCORE_3;
1958 break;
1959 case 4:
1960 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
1961 gc->attr |= GRID_ATTR_UNDERSCORE_4;
1962 break;
1963 case 5:
1964 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
1965 gc->attr |= GRID_ATTR_UNDERSCORE_5;
1966 break;
1967 }
1968 return;
1969 }
1970 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
1971 return;
1972 switch (p[1]) {
1973 case 2:
1974 if (n < 3)
1975 break;
1976 if (n == 5)
1977 i = 2;
1978 else
1979 i = 3;
1980 if (n < i + 3)
1981 break;
1982 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
1983 p[i + 2]);
1984 break;
1985 case 5:
1986 if (n < 3)
1987 break;
1988 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
1989 break;
1990 }
1991}
1992
1993/* Handle CSI SGR. */
1994static void
1995input_csi_dispatch_sgr(struct input_ctx *ictx)
1996{
1997 struct grid_cell *gc = &ictx->cell.cell;
1998 u_int i;
1999 int n;
2000
2001 if (ictx->param_list_len == 0) {
2002 memcpy(gc, &grid_default_cell, sizeof *gc);
2003 return;
2004 }
2005
2006 for (i = 0; i < ictx->param_list_len; i++) {
2007 if (ictx->param_list[i].type == INPUT_STRING) {
2008 input_csi_dispatch_sgr_colon(ictx, i);
2009 continue;
2010 }
2011 n = input_get(ictx, i, 0, 0);
2012 if (n == -1)
2013 continue;
2014
2015 if (n == 38 || n == 48 || n == 58) {
2016 i++;
2017 switch (input_get(ictx, i, 0, -1)) {
2018 case 2:
2019 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2020 break;
2021 case 5:
2022 input_csi_dispatch_sgr_256(ictx, n, &i);
2023 break;
2024 }
2025 continue;
2026 }
2027
2028 switch (n) {
2029 case 0:
2030 memcpy(gc, &grid_default_cell, sizeof *gc);
2031 break;
2032 case 1:
2033 gc->attr |= GRID_ATTR_BRIGHT;
2034 break;
2035 case 2:
2036 gc->attr |= GRID_ATTR_DIM;
2037 break;
2038 case 3:
2039 gc->attr |= GRID_ATTR_ITALICS;
2040 break;
2041 case 4:
2042 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2043 gc->attr |= GRID_ATTR_UNDERSCORE;
2044 break;
2045 case 5:
2046 gc->attr |= GRID_ATTR_BLINK;
2047 break;
2048 case 7:
2049 gc->attr |= GRID_ATTR_REVERSE;
2050 break;
2051 case 8:
2052 gc->attr |= GRID_ATTR_HIDDEN;
2053 break;
2054 case 9:
2055 gc->attr |= GRID_ATTR_STRIKETHROUGH;
2056 break;
2057 case 22:
2058 gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
2059 break;
2060 case 23:
2061 gc->attr &= ~GRID_ATTR_ITALICS;
2062 break;
2063 case 24:
2064 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE;
2065 break;
2066 case 25:
2067 gc->attr &= ~GRID_ATTR_BLINK;
2068 break;
2069 case 27:
2070 gc->attr &= ~GRID_ATTR_REVERSE;
2071 break;
2072 case 28:
2073 gc->attr &= ~GRID_ATTR_HIDDEN;
2074 break;
2075 case 29:
2076 gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
2077 break;
2078 case 30:
2079 case 31:
2080 case 32:
2081 case 33:
2082 case 34:
2083 case 35:
2084 case 36:
2085 case 37:
2086 gc->fg = n - 30;
2087 break;
2088 case 39:
2089 gc->fg = 8;
2090 break;
2091 case 40:
2092 case 41:
2093 case 42:
2094 case 43:
2095 case 44:
2096 case 45:
2097 case 46:
2098 case 47:
2099 gc->bg = n - 40;
2100 break;
2101 case 49:
2102 gc->bg = 8;
2103 break;
2104 case 53:
2105 gc->attr |= GRID_ATTR_OVERLINE;
2106 break;
2107 case 55:
2108 gc->attr &= ~GRID_ATTR_OVERLINE;
2109 break;
2110 case 59:
2111 gc->us = 0;
2112 break;
2113 case 90:
2114 case 91:
2115 case 92:
2116 case 93:
2117 case 94:
2118 case 95:
2119 case 96:
2120 case 97:
2121 gc->fg = n;
2122 break;
2123 case 100:
2124 case 101:
2125 case 102:
2126 case 103:
2127 case 104:
2128 case 105:
2129 case 106:
2130 case 107:
2131 gc->bg = n - 10;
2132 break;
2133 }
2134 }
2135}
2136
2137/* End of input with BEL. */
2138static int
2139input_end_bel(struct input_ctx *ictx)
2140{
2141 log_debug("%s", __func__);
2142
2143 ictx->input_end = INPUT_END_BEL;
2144
2145 return (0);
2146}
2147
2148/* DCS string started. */
2149static void
2150input_enter_dcs(struct input_ctx *ictx)
2151{
2152 log_debug("%s", __func__);
2153
2154 input_clear(ictx);
2155 input_start_timer(ictx);
2156 ictx->last = -1;
2157}
2158
2159/* DCS terminator (ST) received. */
2160static int
2161input_dcs_dispatch(struct input_ctx *ictx)
2162{
2163 struct screen_write_ctx *sctx = &ictx->ctx;
2164 u_char *buf = ictx->input_buf;
2165 size_t len = ictx->input_len;
2166 const char prefix[] = "tmux;";
2167 const u_int prefixlen = (sizeof prefix) - 1;
2168
2169 if (ictx->flags & INPUT_DISCARD)
2170 return (0);
2171
2172 log_debug("%s: \"%s\"", __func__, buf);
2173
2174 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0)
2175 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen);
2176
2177 return (0);
2178}
2179
2180/* OSC string started. */
2181static void
2182input_enter_osc(struct input_ctx *ictx)
2183{
2184 log_debug("%s", __func__);
2185
2186 input_clear(ictx);
2187 input_start_timer(ictx);
2188 ictx->last = -1;
2189}
2190
2191/* OSC terminator (ST) received. */
2192static void
2193input_exit_osc(struct input_ctx *ictx)
2194{
2195 struct screen_write_ctx *sctx = &ictx->ctx;
2196 u_char *p = ictx->input_buf;
2197 u_int option;
2198
2199 if (ictx->flags & INPUT_DISCARD)
2200 return;
2201 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2202 return;
2203
2204 log_debug("%s: \"%s\" (end %s)", __func__, p,
2205 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2206
2207 option = 0;
2208 while (*p >= '0' && *p <= '9')
2209 option = option * 10 + *p++ - '0';
2210 if (*p == ';')
2211 p++;
2212
2213 switch (option) {
2214 case 0:
2215 case 2:
2216 if (screen_set_title(sctx->s, p))
2217 server_status_window(ictx->wp->window);
2218 break;
2219 case 4:
2220 input_osc_4(ictx, p);
2221 break;
2222 case 7:
2223 if (utf8_isvalid(p)) {
2224 screen_set_path(sctx->s, p);
2225 server_status_window(ictx->wp->window);
2226 }
2227 break;
2228 case 10:
2229 input_osc_10(ictx, p);
2230 break;
2231 case 11:
2232 input_osc_11(ictx, p);
2233 break;
2234 case 12:
2235 if (utf8_isvalid(p) && *p != '?') /* ? is colour request */
2236 screen_set_cursor_colour(sctx->s, p);
2237 break;
2238 case 52:
2239 input_osc_52(ictx, p);
2240 break;
2241 case 104:
2242 input_osc_104(ictx, p);
2243 break;
2244 case 112:
2245 if (*p == '\0') /* no arguments allowed */
2246 screen_set_cursor_colour(sctx->s, "");
2247 break;
2248 default:
2249 log_debug("%s: unknown '%u'", __func__, option);
2250 break;
2251 }
2252}
2253
2254/* APC string started. */
2255static void
2256input_enter_apc(struct input_ctx *ictx)
2257{
2258 log_debug("%s", __func__);
2259
2260 input_clear(ictx);
2261 input_start_timer(ictx);
2262 ictx->last = -1;
2263}
2264
2265/* APC terminator (ST) received. */
2266static void
2267input_exit_apc(struct input_ctx *ictx)
2268{
2269 struct screen_write_ctx *sctx = &ictx->ctx;
2270
2271 if (ictx->flags & INPUT_DISCARD)
2272 return;
2273 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2274
2275 if (screen_set_title(sctx->s, ictx->input_buf))
2276 server_status_window(ictx->wp->window);
2277}
2278
2279/* Rename string started. */
2280static void
2281input_enter_rename(struct input_ctx *ictx)
2282{
2283 log_debug("%s", __func__);
2284
2285 input_clear(ictx);
2286 input_start_timer(ictx);
2287 ictx->last = -1;
2288}
2289
2290/* Rename terminator (ST) received. */
2291static void
2292input_exit_rename(struct input_ctx *ictx)
2293{
2294 struct window_pane *wp = ictx->wp;
2295 struct options_entry *oe;
2296
2297 if (ictx->flags & INPUT_DISCARD)
2298 return;
2299 if (!options_get_number(ictx->wp->options, "allow-rename"))
2300 return;
2301 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2302
2303 if (!utf8_isvalid(ictx->input_buf))
2304 return;
2305
2306 if (ictx->input_len == 0) {
2307 oe = options_get(wp->window->options, "automatic-rename");
2308 if (oe != NULL)
2309 options_remove(oe);
2310 return;
2311 }
2312 window_set_name(ictx->wp->window, ictx->input_buf);
2313 options_set_number(ictx->wp->window->options, "automatic-rename", 0);
2314 server_status_window(ictx->wp->window);
2315}
2316
2317/* Open UTF-8 character. */
2318static int
2319input_top_bit_set(struct input_ctx *ictx)
2320{
2321 struct screen_write_ctx *sctx = &ictx->ctx;
2322 struct utf8_data *ud = &ictx->utf8data;
2323
2324 ictx->last = -1;
2325
2326 if (!ictx->utf8started) {
2327 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2328 return (0);
2329 ictx->utf8started = 1;
2330 return (0);
2331 }
2332
2333 switch (utf8_append(ud, ictx->ch)) {
2334 case UTF8_MORE:
2335 return (0);
2336 case UTF8_ERROR:
2337 ictx->utf8started = 0;
2338 return (0);
2339 case UTF8_DONE:
2340 break;
2341 }
2342 ictx->utf8started = 0;
2343
2344 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2345 (int)ud->size, ud->data, ud->width);
2346
2347 utf8_copy(&ictx->cell.cell.data, ud);
2348 screen_write_collect_add(sctx, &ictx->cell.cell);
2349
2350 return (0);
2351}
2352
2353/* Parse colour from OSC. */
2354static int
2355input_osc_parse_colour(const char *p, u_int *r, u_int *g, u_int *b)
2356{
2357 u_int rsize, gsize, bsize;
2358 const char *cp, *s = p;
2359
2360 if (sscanf(p, "rgb:%x/%x/%x", r, g, b) != 3)
2361 return (0);
2362 p += 4;
2363
2364 cp = strchr(p, '/');
2365 rsize = cp - p;
2366 if (rsize == 1)
2367 (*r) = (*r) | ((*r) << 4);
2368 else if (rsize == 3)
2369 (*r) >>= 4;
2370 else if (rsize == 4)
2371 (*r) >>= 8;
2372 else if (rsize != 2)
2373 return (0);
2374
2375 p = cp + 1;
2376 cp = strchr(p, '/');
2377 gsize = cp - p;
2378 if (gsize == 1)
2379 (*g) = (*g) | ((*g) << 4);
2380 else if (gsize == 3)
2381 (*g) >>= 4;
2382 else if (gsize == 4)
2383 (*g) >>= 8;
2384 else if (gsize != 2)
2385 return (0);
2386
2387 bsize = strlen(cp + 1);
2388 if (bsize == 1)
2389 (*b) = (*b) | ((*b) << 4);
2390 else if (bsize == 3)
2391 (*b) >>= 4;
2392 else if (bsize == 4)
2393 (*b) >>= 8;
2394 else if (bsize != 2)
2395 return (0);
2396
2397 log_debug("%s: %s = %02x%02x%02x", __func__, s, *r, *g, *b);
2398 return (1);
2399}
2400
2401/* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2402static void
2403input_osc_4(struct input_ctx *ictx, const char *p)
2404{
2405 struct window_pane *wp = ictx->wp;
2406 char *copy, *s, *next = NULL;
2407 long idx;
2408 u_int r, g, b;
2409
2410 copy = s = xstrdup(p);
2411 while (s != NULL && *s != '\0') {
2412 idx = strtol(s, &next, 10);
2413 if (*next++ != ';')
2414 goto bad;
2415 if (idx < 0 || idx >= 0x100)
2416 goto bad;
2417
2418 s = strsep(&next, ";");
2419 if (!input_osc_parse_colour(s, &r, &g, &b)) {
2420 s = next;
2421 continue;
2422 }
2423
2424 window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b));
2425 s = next;
2426 }
2427
2428 free(copy);
2429 return;
2430
2431bad:
2432 log_debug("bad OSC 4: %s", p);
2433 free(copy);
2434}
2435
2436/* Handle the OSC 10 sequence for setting foreground colour. */
2437static void
2438input_osc_10(struct input_ctx *ictx, const char *p)
2439{
2440 struct window_pane *wp = ictx->wp;
2441 u_int r, g, b;
2442 char tmp[16];
2443
2444 if (strcmp(p, "?") == 0)
2445 return;
2446
2447 if (!input_osc_parse_colour(p, &r, &g, &b))
2448 goto bad;
2449 xsnprintf(tmp, sizeof tmp, "fg=#%02x%02x%02x", r, g, b);
2450 options_set_style(wp->options, "window-style", 1, tmp);
2451 options_set_style(wp->options, "window-active-style", 1, tmp);
2452 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
2453
2454 return;
2455
2456bad:
2457 log_debug("bad OSC 10: %s", p);
2458}
2459
2460/* Handle the OSC 11 sequence for setting background colour. */
2461static void
2462input_osc_11(struct input_ctx *ictx, const char *p)
2463{
2464 struct window_pane *wp = ictx->wp;
2465 u_int r, g, b;
2466 char tmp[16];
2467
2468 if (strcmp(p, "?") == 0)
2469 return;
2470
2471 if (!input_osc_parse_colour(p, &r, &g, &b))
2472 goto bad;
2473 xsnprintf(tmp, sizeof tmp, "bg=#%02x%02x%02x", r, g, b);
2474 options_set_style(wp->options, "window-style", 1, tmp);
2475 options_set_style(wp->options, "window-active-style", 1, tmp);
2476 wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
2477
2478 return;
2479
2480bad:
2481 log_debug("bad OSC 11: %s", p);
2482}
2483
2484/* Handle the OSC 52 sequence for setting the clipboard. */
2485static void
2486input_osc_52(struct input_ctx *ictx, const char *p)
2487{
2488 struct window_pane *wp = ictx->wp;
2489 char *end;
2490 const char *buf;
2491 size_t len;
2492 u_char *out;
2493 int outlen, state;
2494 struct screen_write_ctx ctx;
2495 struct paste_buffer *pb;
2496
2497 state = options_get_number(global_options, "set-clipboard");
2498 if (state != 2)
2499 return;
2500
2501 if ((end = strchr(p, ';')) == NULL)
2502 return;
2503 end++;
2504 if (*end == '\0')
2505 return;
2506 log_debug("%s: %s", __func__, end);
2507
2508 if (strcmp(end, "?") == 0) {
2509 if ((pb = paste_get_top(NULL)) != NULL) {
2510 buf = paste_buffer_data(pb, &len);
2511 outlen = 4 * ((len + 2) / 3) + 1;
2512 out = xmalloc(outlen);
2513 if ((outlen = b64_ntop(buf, len, out, outlen)) == -1) {
2514 free(out);
2515 return;
2516 }
2517 } else {
2518 outlen = 0;
2519 out = NULL;
2520 }
2521 bufferevent_write(wp->event, "\033]52;;", 6);
2522 if (outlen != 0)
2523 bufferevent_write(wp->event, out, outlen);
2524 if (ictx->input_end == INPUT_END_BEL)
2525 bufferevent_write(wp->event, "\007", 1);
2526 else
2527 bufferevent_write(wp->event, "\033\\", 2);
2528 free(out);
2529 return;
2530 }
2531
2532 len = (strlen(end) / 4) * 3;
2533 if (len == 0)
2534 return;
2535
2536 out = xmalloc(len);
2537 if ((outlen = b64_pton(end, out, len)) == -1) {
2538 free(out);
2539 return;
2540 }
2541
2542 screen_write_start(&ctx, wp, NULL);
2543 screen_write_setselection(&ctx, out, outlen);
2544 screen_write_stop(&ctx);
2545 notify_pane("pane-set-clipboard", wp);
2546
2547 paste_add(NULL, out, outlen);
2548}
2549
2550/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2551static void
2552input_osc_104(struct input_ctx *ictx, const char *p)
2553{
2554 struct window_pane *wp = ictx->wp;
2555 char *copy, *s;
2556 long idx;
2557
2558 if (*p == '\0') {
2559 window_pane_reset_palette(wp);
2560 return;
2561 }
2562
2563 copy = s = xstrdup(p);
2564 while (*s != '\0') {
2565 idx = strtol(s, &s, 10);
2566 if (*s != '\0' && *s != ';')
2567 goto bad;
2568 if (idx < 0 || idx >= 0x100)
2569 goto bad;
2570
2571 window_pane_unset_palette(wp, idx);
2572 if (*s == ';')
2573 s++;
2574 }
2575 free(copy);
2576 return;
2577
2578bad:
2579 log_debug("bad OSC 104: %s", p);
2580 free(copy);
2581}
2582