Bug Summary

File:src/usr.bin/tmux/input.c
Warning:line 912, column 10
Access to field 'transitions' results in a dereference of a null pointer (loaded from field 'state')

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name input.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.bin/tmux/obj -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/usr.bin/tmux -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.bin/tmux/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fno-jump-tables -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/scan/2024-01-11-140451-98009-1 -x c /usr/src/usr.bin/tmux/input.c
1/* $OpenBSD: input.c,v 1.223 2023/12/27 20:13:35 nicm Exp $ */
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. */
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 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_START32 32
96#define INPUT_BUF_LIMIT1048576 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_DISCARD0x1 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. */
129struct input_transition;
130static int input_split(struct input_ctx *);
131static int input_get(struct input_ctx *, u_int, int, int);
132static void printflike(2, 3)__attribute__ ((format (printf, 2, 3))) input_reply(struct input_ctx *, const char *, ...);
133static void input_set_state(struct input_ctx *,
134 const struct input_transition *);
135static void input_reset_cell(struct input_ctx *);
136
137static void input_osc_4(struct input_ctx *, const char *);
138static void input_osc_8(struct input_ctx *, const char *);
139static void input_osc_10(struct input_ctx *, const char *);
140static void input_osc_11(struct input_ctx *, const char *);
141static void input_osc_12(struct input_ctx *, const char *);
142static void input_osc_52(struct input_ctx *, const char *);
143static void input_osc_104(struct input_ctx *, const char *);
144static void input_osc_110(struct input_ctx *, const char *);
145static void input_osc_111(struct input_ctx *, const char *);
146static void input_osc_112(struct input_ctx *, const char *);
147static void input_osc_133(struct input_ctx *, const char *);
148
149/* Transition entry/exit handlers. */
150static void input_clear(struct input_ctx *);
151static void input_ground(struct input_ctx *);
152static void input_enter_dcs(struct input_ctx *);
153static void input_enter_osc(struct input_ctx *);
154static void input_exit_osc(struct input_ctx *);
155static void input_enter_apc(struct input_ctx *);
156static void input_exit_apc(struct input_ctx *);
157static void input_enter_rename(struct input_ctx *);
158static void input_exit_rename(struct input_ctx *);
159
160/* Input state handlers. */
161static int input_print(struct input_ctx *);
162static int input_intermediate(struct input_ctx *);
163static int input_parameter(struct input_ctx *);
164static int input_input(struct input_ctx *);
165static int input_c0_dispatch(struct input_ctx *);
166static int input_esc_dispatch(struct input_ctx *);
167static int input_csi_dispatch(struct input_ctx *);
168static void input_csi_dispatch_rm(struct input_ctx *);
169static void input_csi_dispatch_rm_private(struct input_ctx *);
170static void input_csi_dispatch_sm(struct input_ctx *);
171static void input_csi_dispatch_sm_private(struct input_ctx *);
172static void input_csi_dispatch_sm_graphics(struct input_ctx *);
173static void input_csi_dispatch_winops(struct input_ctx *);
174static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
175static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
176static void input_csi_dispatch_sgr(struct input_ctx *);
177static int input_dcs_dispatch(struct input_ctx *);
178static int input_top_bit_set(struct input_ctx *);
179static int input_end_bel(struct input_ctx *);
180
181/* Command table comparison function. */
182static int input_table_compare(const void *, const void *);
183
184/* Command table entry. */
185struct input_table_entry {
186 int ch;
187 const char *interm;
188 int type;
189};
190
191/* Escape commands. */
192enum input_esc_type {
193 INPUT_ESC_DECALN,
194 INPUT_ESC_DECKPAM,
195 INPUT_ESC_DECKPNM,
196 INPUT_ESC_DECRC,
197 INPUT_ESC_DECSC,
198 INPUT_ESC_HTS,
199 INPUT_ESC_IND,
200 INPUT_ESC_NEL,
201 INPUT_ESC_RI,
202 INPUT_ESC_RIS,
203 INPUT_ESC_SCSG0_OFF,
204 INPUT_ESC_SCSG0_ON,
205 INPUT_ESC_SCSG1_OFF,
206 INPUT_ESC_SCSG1_ON,
207 INPUT_ESC_ST
208};
209
210/* Escape command table. */
211static const struct input_table_entry input_esc_table[] = {
212 { '0', "(", INPUT_ESC_SCSG0_ON },
213 { '0', ")", INPUT_ESC_SCSG1_ON },
214 { '7', "", INPUT_ESC_DECSC },
215 { '8', "", INPUT_ESC_DECRC },
216 { '8', "#", INPUT_ESC_DECALN },
217 { '=', "", INPUT_ESC_DECKPAM },
218 { '>', "", INPUT_ESC_DECKPNM },
219 { 'B', "(", INPUT_ESC_SCSG0_OFF },
220 { 'B', ")", INPUT_ESC_SCSG1_OFF },
221 { 'D', "", INPUT_ESC_IND },
222 { 'E', "", INPUT_ESC_NEL },
223 { 'H', "", INPUT_ESC_HTS },
224 { 'M', "", INPUT_ESC_RI },
225 { '\\', "", INPUT_ESC_ST },
226 { 'c', "", INPUT_ESC_RIS },
227};
228
229/* Control (CSI) commands. */
230enum input_csi_type {
231 INPUT_CSI_CBT,
232 INPUT_CSI_CNL,
233 INPUT_CSI_CPL,
234 INPUT_CSI_CUB,
235 INPUT_CSI_CUD,
236 INPUT_CSI_CUF,
237 INPUT_CSI_CUP,
238 INPUT_CSI_CUU,
239 INPUT_CSI_DA,
240 INPUT_CSI_DA_TWO,
241 INPUT_CSI_DCH,
242 INPUT_CSI_DECSCUSR,
243 INPUT_CSI_DECSTBM,
244 INPUT_CSI_DL,
245 INPUT_CSI_DSR,
246 INPUT_CSI_ECH,
247 INPUT_CSI_ED,
248 INPUT_CSI_EL,
249 INPUT_CSI_HPA,
250 INPUT_CSI_ICH,
251 INPUT_CSI_IL,
252 INPUT_CSI_MODOFF,
253 INPUT_CSI_MODSET,
254 INPUT_CSI_RCP,
255 INPUT_CSI_REP,
256 INPUT_CSI_RM,
257 INPUT_CSI_RM_PRIVATE,
258 INPUT_CSI_SCP,
259 INPUT_CSI_SD,
260 INPUT_CSI_SGR,
261 INPUT_CSI_SM,
262 INPUT_CSI_SM_PRIVATE,
263 INPUT_CSI_SM_GRAPHICS,
264 INPUT_CSI_SU,
265 INPUT_CSI_TBC,
266 INPUT_CSI_VPA,
267 INPUT_CSI_WINOPS,
268 INPUT_CSI_XDA
269};
270
271/* Control (CSI) command table. */
272static const struct input_table_entry input_csi_table[] = {
273 { '@', "", INPUT_CSI_ICH },
274 { 'A', "", INPUT_CSI_CUU },
275 { 'B', "", INPUT_CSI_CUD },
276 { 'C', "", INPUT_CSI_CUF },
277 { 'D', "", INPUT_CSI_CUB },
278 { 'E', "", INPUT_CSI_CNL },
279 { 'F', "", INPUT_CSI_CPL },
280 { 'G', "", INPUT_CSI_HPA },
281 { 'H', "", INPUT_CSI_CUP },
282 { 'J', "", INPUT_CSI_ED },
283 { 'K', "", INPUT_CSI_EL },
284 { 'L', "", INPUT_CSI_IL },
285 { 'M', "", INPUT_CSI_DL },
286 { 'P', "", INPUT_CSI_DCH },
287 { 'S', "", INPUT_CSI_SU },
288 { 'S', "?", INPUT_CSI_SM_GRAPHICS },
289 { 'T', "", INPUT_CSI_SD },
290 { 'X', "", INPUT_CSI_ECH },
291 { 'Z', "", INPUT_CSI_CBT },
292 { '`', "", INPUT_CSI_HPA },
293 { 'b', "", INPUT_CSI_REP },
294 { 'c', "", INPUT_CSI_DA },
295 { 'c', ">", INPUT_CSI_DA_TWO },
296 { 'd', "", INPUT_CSI_VPA },
297 { 'f', "", INPUT_CSI_CUP },
298 { 'g', "", INPUT_CSI_TBC },
299 { 'h', "", INPUT_CSI_SM },
300 { 'h', "?", INPUT_CSI_SM_PRIVATE },
301 { 'l', "", INPUT_CSI_RM },
302 { 'l', "?", INPUT_CSI_RM_PRIVATE },
303 { 'm', "", INPUT_CSI_SGR },
304 { 'm', ">", INPUT_CSI_MODSET },
305 { 'n', "", INPUT_CSI_DSR },
306 { 'n', ">", INPUT_CSI_MODOFF },
307 { 'q', " ", INPUT_CSI_DECSCUSR },
308 { 'q', ">", INPUT_CSI_XDA },
309 { 'r', "", INPUT_CSI_DECSTBM },
310 { 's', "", INPUT_CSI_SCP },
311 { 't', "", INPUT_CSI_WINOPS },
312 { 'u', "", INPUT_CSI_RCP }
313};
314
315/* Input transition. */
316struct input_transition {
317 int first;
318 int last;
319
320 int (*handler)(struct input_ctx *);
321 const struct input_state *state;
322};
323
324/* Input state. */
325struct input_state {
326 const char *name;
327 void (*enter)(struct input_ctx *);
328 void (*exit)(struct input_ctx *);
329 const struct input_transition *transitions;
330};
331
332/* State transitions available from all states. */
333#define INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter } \
334 { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
335 { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
336 { 0x1b, 0x1b, NULL((void *)0), &input_state_esc_enter }
337
338/* Forward declarations of state tables. */
339static const struct input_transition input_state_ground_table[];
340static const struct input_transition input_state_esc_enter_table[];
341static const struct input_transition input_state_esc_intermediate_table[];
342static const struct input_transition input_state_csi_enter_table[];
343static const struct input_transition input_state_csi_parameter_table[];
344static const struct input_transition input_state_csi_intermediate_table[];
345static const struct input_transition input_state_csi_ignore_table[];
346static const struct input_transition input_state_dcs_enter_table[];
347static const struct input_transition input_state_dcs_parameter_table[];
348static const struct input_transition input_state_dcs_intermediate_table[];
349static const struct input_transition input_state_dcs_handler_table[];
350static const struct input_transition input_state_dcs_escape_table[];
351static const struct input_transition input_state_dcs_ignore_table[];
352static const struct input_transition input_state_osc_string_table[];
353static const struct input_transition input_state_apc_string_table[];
354static const struct input_transition input_state_rename_string_table[];
355static const struct input_transition input_state_consume_st_table[];
356
357/* ground state definition. */
358static const struct input_state input_state_ground = {
359 "ground",
360 input_ground, NULL((void *)0),
361 input_state_ground_table
362};
363
364/* esc_enter state definition. */
365static const struct input_state input_state_esc_enter = {
366 "esc_enter",
367 input_clear, NULL((void *)0),
368 input_state_esc_enter_table
369};
370
371/* esc_intermediate state definition. */
372static const struct input_state input_state_esc_intermediate = {
373 "esc_intermediate",
374 NULL((void *)0), NULL((void *)0),
375 input_state_esc_intermediate_table
376};
377
378/* csi_enter state definition. */
379static const struct input_state input_state_csi_enter = {
380 "csi_enter",
381 input_clear, NULL((void *)0),
382 input_state_csi_enter_table
383};
384
385/* csi_parameter state definition. */
386static const struct input_state input_state_csi_parameter = {
387 "csi_parameter",
388 NULL((void *)0), NULL((void *)0),
389 input_state_csi_parameter_table
390};
391
392/* csi_intermediate state definition. */
393static const struct input_state input_state_csi_intermediate = {
394 "csi_intermediate",
395 NULL((void *)0), NULL((void *)0),
396 input_state_csi_intermediate_table
397};
398
399/* csi_ignore state definition. */
400static const struct input_state input_state_csi_ignore = {
401 "csi_ignore",
402 NULL((void *)0), NULL((void *)0),
403 input_state_csi_ignore_table
404};
405
406/* dcs_enter state definition. */
407static const struct input_state input_state_dcs_enter = {
408 "dcs_enter",
409 input_enter_dcs, NULL((void *)0),
410 input_state_dcs_enter_table
411};
412
413/* dcs_parameter state definition. */
414static const struct input_state input_state_dcs_parameter = {
415 "dcs_parameter",
416 NULL((void *)0), NULL((void *)0),
417 input_state_dcs_parameter_table
418};
419
420/* dcs_intermediate state definition. */
421static const struct input_state input_state_dcs_intermediate = {
422 "dcs_intermediate",
423 NULL((void *)0), NULL((void *)0),
424 input_state_dcs_intermediate_table
425};
426
427/* dcs_handler state definition. */
428static const struct input_state input_state_dcs_handler = {
429 "dcs_handler",
430 NULL((void *)0), NULL((void *)0),
431 input_state_dcs_handler_table
432};
433
434/* dcs_escape state definition. */
435static const struct input_state input_state_dcs_escape = {
436 "dcs_escape",
437 NULL((void *)0), NULL((void *)0),
438 input_state_dcs_escape_table
439};
440
441/* dcs_ignore state definition. */
442static const struct input_state input_state_dcs_ignore = {
443 "dcs_ignore",
444 NULL((void *)0), NULL((void *)0),
445 input_state_dcs_ignore_table
446};
447
448/* osc_string state definition. */
449static const struct input_state input_state_osc_string = {
450 "osc_string",
451 input_enter_osc, input_exit_osc,
452 input_state_osc_string_table
453};
454
455/* apc_string state definition. */
456static const struct input_state input_state_apc_string = {
457 "apc_string",
458 input_enter_apc, input_exit_apc,
459 input_state_apc_string_table
460};
461
462/* rename_string state definition. */
463static const struct input_state input_state_rename_string = {
464 "rename_string",
465 input_enter_rename, input_exit_rename,
466 input_state_rename_string_table
467};
468
469/* consume_st state definition. */
470static const struct input_state input_state_consume_st = {
471 "consume_st",
472 input_enter_rename, NULL((void *)0), /* rename also waits for ST */
473 input_state_consume_st_table
474};
475
476/* ground state table. */
477static const struct input_transition input_state_ground_table[] = {
478 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
479
480 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
481 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
482 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
483 { 0x20, 0x7e, input_print, NULL((void *)0) },
484 { 0x7f, 0x7f, NULL((void *)0), NULL((void *)0) },
485 { 0x80, 0xff, input_top_bit_set, NULL((void *)0) },
486
487 { -1, -1, NULL((void *)0), NULL((void *)0) }
488};
489
490/* esc_enter state table. */
491static const struct input_transition input_state_esc_enter_table[] = {
492 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
493
494 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
495 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
496 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
497 { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
498 { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
499 { 0x50, 0x50, NULL((void *)0), &input_state_dcs_enter },
500 { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
501 { 0x58, 0x58, NULL((void *)0), &input_state_consume_st },
502 { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
503 { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
504 { 0x5b, 0x5b, NULL((void *)0), &input_state_csi_enter },
505 { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
506 { 0x5d, 0x5d, NULL((void *)0), &input_state_osc_string },
507 { 0x5e, 0x5e, NULL((void *)0), &input_state_consume_st },
508 { 0x5f, 0x5f, NULL((void *)0), &input_state_apc_string },
509 { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
510 { 0x6b, 0x6b, NULL((void *)0), &input_state_rename_string },
511 { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
512 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
513
514 { -1, -1, NULL((void *)0), NULL((void *)0) }
515};
516
517/* esc_intermediate state table. */
518static const struct input_transition input_state_esc_intermediate_table[] = {
519 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
520
521 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
522 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
523 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
524 { 0x20, 0x2f, input_intermediate, NULL((void *)0) },
525 { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
526 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
527
528 { -1, -1, NULL((void *)0), NULL((void *)0) }
529};
530
531/* csi_enter state table. */
532static const struct input_transition input_state_csi_enter_table[] = {
533 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
534
535 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
536 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
537 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
538 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
539 { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
540 { 0x3a, 0x3a, input_parameter, &input_state_csi_parameter },
541 { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
542 { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
543 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
544 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
545
546 { -1, -1, NULL((void *)0), NULL((void *)0) }
547};
548
549/* csi_parameter state table. */
550static const struct input_transition input_state_csi_parameter_table[] = {
551 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
552
553 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
554 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
555 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
556 { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
557 { 0x30, 0x39, input_parameter, NULL((void *)0) },
558 { 0x3a, 0x3a, input_parameter, NULL((void *)0) },
559 { 0x3b, 0x3b, input_parameter, NULL((void *)0) },
560 { 0x3c, 0x3f, NULL((void *)0), &input_state_csi_ignore },
561 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
562 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
563
564 { -1, -1, NULL((void *)0), NULL((void *)0) }
565};
566
567/* csi_intermediate state table. */
568static const struct input_transition input_state_csi_intermediate_table[] = {
569 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
570
571 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
572 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
573 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
574 { 0x20, 0x2f, input_intermediate, NULL((void *)0) },
575 { 0x30, 0x3f, NULL((void *)0), &input_state_csi_ignore },
576 { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
577 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
578
579 { -1, -1, NULL((void *)0), NULL((void *)0) }
580};
581
582/* csi_ignore state table. */
583static const struct input_transition input_state_csi_ignore_table[] = {
584 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
585
586 { 0x00, 0x17, input_c0_dispatch, NULL((void *)0) },
587 { 0x19, 0x19, input_c0_dispatch, NULL((void *)0) },
588 { 0x1c, 0x1f, input_c0_dispatch, NULL((void *)0) },
589 { 0x20, 0x3f, NULL((void *)0), NULL((void *)0) },
590 { 0x40, 0x7e, NULL((void *)0), &input_state_ground },
591 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
592
593 { -1, -1, NULL((void *)0), NULL((void *)0) }
594};
595
596/* dcs_enter state table. */
597static const struct input_transition input_state_dcs_enter_table[] = {
598 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
599
600 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
601 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
602 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
603 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
604 { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
605 { 0x3a, 0x3a, NULL((void *)0), &input_state_dcs_ignore },
606 { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
607 { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
608 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
609 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
610
611 { -1, -1, NULL((void *)0), NULL((void *)0) }
612};
613
614/* dcs_parameter state table. */
615static const struct input_transition input_state_dcs_parameter_table[] = {
616 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
617
618 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
619 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
620 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
621 { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
622 { 0x30, 0x39, input_parameter, NULL((void *)0) },
623 { 0x3a, 0x3a, NULL((void *)0), &input_state_dcs_ignore },
624 { 0x3b, 0x3b, input_parameter, NULL((void *)0) },
625 { 0x3c, 0x3f, NULL((void *)0), &input_state_dcs_ignore },
626 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
627 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
628
629 { -1, -1, NULL((void *)0), NULL((void *)0) }
630};
631
632/* dcs_intermediate state table. */
633static const struct input_transition input_state_dcs_intermediate_table[] = {
634 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
635
636 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
637 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
638 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
639 { 0x20, 0x2f, input_intermediate, NULL((void *)0) },
640 { 0x30, 0x3f, NULL((void *)0), &input_state_dcs_ignore },
641 { 0x40, 0x7e, input_input, &input_state_dcs_handler },
642 { 0x7f, 0xff, NULL((void *)0), NULL((void *)0) },
643
644 { -1, -1, NULL((void *)0), NULL((void *)0) }
645};
646
647/* dcs_handler state table. */
648static const struct input_transition input_state_dcs_handler_table[] = {
649 /* No INPUT_STATE_ANYWHERE */
650
651 { 0x00, 0x1a, input_input, NULL((void *)0) },
652 { 0x1b, 0x1b, NULL((void *)0), &input_state_dcs_escape },
653 { 0x1c, 0xff, input_input, NULL((void *)0) },
654
655 { -1, -1, NULL((void *)0), NULL((void *)0) }
656};
657
658/* dcs_escape state table. */
659static const struct input_transition input_state_dcs_escape_table[] = {
660 /* No INPUT_STATE_ANYWHERE */
661
662 { 0x00, 0x5b, input_input, &input_state_dcs_handler },
663 { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
664 { 0x5d, 0xff, input_input, &input_state_dcs_handler },
665
666 { -1, -1, NULL((void *)0), NULL((void *)0) }
667};
668
669/* dcs_ignore state table. */
670static const struct input_transition input_state_dcs_ignore_table[] = {
671 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
672
673 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
674 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
675 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
676 { 0x20, 0xff, NULL((void *)0), NULL((void *)0) },
677
678 { -1, -1, NULL((void *)0), NULL((void *)0) }
679};
680
681/* osc_string state table. */
682static const struct input_transition input_state_osc_string_table[] = {
683 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
684
685 { 0x00, 0x06, NULL((void *)0), NULL((void *)0) },
686 { 0x07, 0x07, input_end_bel, &input_state_ground },
687 { 0x08, 0x17, NULL((void *)0), NULL((void *)0) },
688 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
689 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
690 { 0x20, 0xff, input_input, NULL((void *)0) },
691
692 { -1, -1, NULL((void *)0), NULL((void *)0) }
693};
694
695/* apc_string state table. */
696static const struct input_transition input_state_apc_string_table[] = {
697 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
698
699 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
700 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
701 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
702 { 0x20, 0xff, input_input, NULL((void *)0) },
703
704 { -1, -1, NULL((void *)0), NULL((void *)0) }
705};
706
707/* rename_string state table. */
708static const struct input_transition input_state_rename_string_table[] = {
709 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
710
711 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
712 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
713 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
714 { 0x20, 0xff, input_input, NULL((void *)0) },
715
716 { -1, -1, NULL((void *)0), NULL((void *)0) }
717};
718
719/* consume_st state table. */
720static const struct input_transition input_state_consume_st_table[] = {
721 INPUT_STATE_ANYWHERE{ 0x18, 0x18, input_c0_dispatch, &input_state_ground }, {
0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, { 0x1b
, 0x1b, ((void *)0), &input_state_esc_enter },
722
723 { 0x00, 0x17, NULL((void *)0), NULL((void *)0) },
724 { 0x19, 0x19, NULL((void *)0), NULL((void *)0) },
725 { 0x1c, 0x1f, NULL((void *)0), NULL((void *)0) },
726 { 0x20, 0xff, NULL((void *)0), NULL((void *)0) },
727
728 { -1, -1, NULL((void *)0), NULL((void *)0) }
729};
730
731/* Input table compare. */
732static int
733input_table_compare(const void *key, const void *value)
734{
735 const struct input_ctx *ictx = key;
736 const struct input_table_entry *entry = value;
737
738 if (ictx->ch != entry->ch)
739 return (ictx->ch - entry->ch);
740 return (strcmp(ictx->interm_buf, entry->interm));
741}
742
743/*
744 * Timer - if this expires then have been waiting for a terminator for too
745 * long, so reset to ground.
746 */
747static void
748input_timer_callback(__unused__attribute__((__unused__)) int fd, __unused__attribute__((__unused__)) short events, void *arg)
749{
750 struct input_ctx *ictx = arg;
751
752 log_debug("%s: %s expired" , __func__, ictx->state->name);
753 input_reset(ictx, 0);
754}
755
756/* Start the timer. */
757static void
758input_start_timer(struct input_ctx *ictx)
759{
760 struct timeval tv = { .tv_sec = 5, .tv_usec = 0 };
761
762 event_del(&ictx->timer);
763 event_add(&ictx->timer, &tv);
764}
765
766/* Reset cell state to default. */
767static void
768input_reset_cell(struct input_ctx *ictx)
769{
770 memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
771 ictx->cell.set = 0;
772 ictx->cell.g0set = ictx->cell.g1set = 0;
773
774 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
775 ictx->old_cx = 0;
776 ictx->old_cy = 0;
777}
778
779/* Save screen state. */
780static void
781input_save_state(struct input_ctx *ictx)
782{
783 struct screen_write_ctx *sctx = &ictx->ctx;
784 struct screen *s = sctx->s;
785
786 memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
787 ictx->old_cx = s->cx;
788 ictx->old_cy = s->cy;
789 ictx->old_mode = s->mode;
790}
791
792/* Restore screen state. */
793static void
794input_restore_state(struct input_ctx *ictx)
795{
796 struct screen_write_ctx *sctx = &ictx->ctx;
797
798 memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
799 if (ictx->old_mode & MODE_ORIGIN0x2000)
800 screen_write_mode_set(sctx, MODE_ORIGIN0x2000);
801 else
802 screen_write_mode_clear(sctx, MODE_ORIGIN0x2000);
803 screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy, 0);
804}
805
806/* Initialise input parser. */
807struct input_ctx *
808input_init(struct window_pane *wp, struct bufferevent *bev,
809 struct colour_palette *palette)
810{
811 struct input_ctx *ictx;
812
813 ictx = xcalloc(1, sizeof *ictx);
814 ictx->wp = wp;
815 ictx->event = bev;
816 ictx->palette = palette;
817
818 ictx->input_space = INPUT_BUF_START32;
819 ictx->input_buf = xmalloc(INPUT_BUF_START32);
820
821 ictx->since_ground = evbuffer_new();
822 if (ictx->since_ground == NULL((void *)0))
823 fatalx("out of memory");
824
825 evtimer_set(&ictx->timer, input_timer_callback, ictx)event_set(&ictx->timer, -1, 0, input_timer_callback, ictx
);
826
827 input_reset(ictx, 0);
828 return (ictx);
829}
830
831/* Destroy input parser. */
832void
833input_free(struct input_ctx *ictx)
834{
835 u_int i;
836
837 for (i = 0; i < ictx->param_list_len; i++) {
838 if (ictx->param_list[i].type == INPUT_STRING)
839 free(ictx->param_list[i].str);
840 }
841
842 event_del(&ictx->timer);
843
844 free(ictx->input_buf);
845 evbuffer_free(ictx->since_ground);
846
847 free(ictx);
848}
849
850/* Reset input state and clear screen. */
851void
852input_reset(struct input_ctx *ictx, int clear)
853{
854 struct screen_write_ctx *sctx = &ictx->ctx;
855 struct window_pane *wp = ictx->wp;
856
857 input_reset_cell(ictx);
858
859 if (clear && wp != NULL((void *)0)) {
860 if (TAILQ_EMPTY(&wp->modes)(((&wp->modes)->tqh_first) == ((void *)0)))
861 screen_write_start_pane(sctx, wp, &wp->base);
862 else
863 screen_write_start(sctx, &wp->base);
864 screen_write_reset(sctx);
865 screen_write_stop(sctx);
866 }
867
868 input_clear(ictx);
869
870 ictx->last = -1;
871
872 ictx->state = &input_state_ground;
873 ictx->flags = 0;
874}
875
876/* Return pending data. */
877struct evbuffer *
878input_pending(struct input_ctx *ictx)
879{
880 return (ictx->since_ground);
881}
882
883/* Change input state. */
884static void
885input_set_state(struct input_ctx *ictx, const struct input_transition *itr)
886{
887 if (ictx->state->exit != NULL((void *)0))
888 ictx->state->exit(ictx);
889 ictx->state = itr->state;
890 if (ictx->state->enter != NULL((void *)0))
891 ictx->state->enter(ictx);
892}
893
894/* Parse data. */
895static void
896input_parse(struct input_ctx *ictx, u_char *buf, size_t len)
897{
898 struct screen_write_ctx *sctx = &ictx->ctx;
899 const struct input_state *state = NULL((void *)0);
900 const struct input_transition *itr = NULL((void *)0);
901 size_t off = 0;
902
903 /* Parse the input. */
904 while (off
4.1
'off' is < 'len'
 < len) {
5
←
Loop condition is true. Entering loop body
→
905 ictx->ch = buf[off++];
906
907 /* Find the transition. */
908 if (ictx->state != state ||
6
←
Assuming 'state' is equal to field 'state'
→
909 itr
6.1
'itr' is equal to NULL
 == NULL((void *)0) ||
910 ictx->ch < itr->first ||
911 ictx->ch > itr->last) {
912 itr = ictx->state->transitions;
7
←
Access to field 'transitions' results in a dereference of a null pointer (loaded from field 'state')
913 while (itr->first != -1 && itr->last != -1) {
914 if (ictx->ch >= itr->first &&
915 ictx->ch <= itr->last)
916 break;
917 itr++;
918 }
919 if (itr->first == -1 || itr->last == -1) {
920 /* No transition? Eh? */
921 fatalx("no transition from state");
922 }
923 }
924 state = ictx->state;
925
926 /*
927 * Any state except print stops the current collection. This is
928 * an optimization to avoid checking if the attributes have
929 * changed for every character. It will stop unnecessarily for
930 * sequences that don't make a terminal change, but they should
931 * be the minority.
932 */
933 if (itr->handler != input_print)
934 screen_write_collect_end(sctx);
935
936 /*
937 * Execute the handler, if any. Don't switch state if it
938 * returns non-zero.
939 */
940 if (itr->handler != NULL((void *)0) && itr->handler(ictx) != 0)
941 continue;
942
943 /* And switch state, if necessary. */
944 if (itr->state != NULL((void *)0))
945 input_set_state(ictx, itr);
946
947 /* If not in ground state, save input. */
948 if (ictx->state != &input_state_ground)
949 evbuffer_add(ictx->since_ground, &ictx->ch, 1);
950 }
951}
952
953/* Parse input from pane. */
954void
955input_parse_pane(struct window_pane *wp)
956{
957 void *new_data;
958 size_t new_size;
959
960 new_data = window_pane_get_new_data(wp, &wp->offset, &new_size);
961 input_parse_buffer(wp, new_data, new_size);
962 window_pane_update_used_data(wp, &wp->offset, new_size);
963}
964
965/* Parse given input. */
966void
967input_parse_buffer(struct window_pane *wp, u_char *buf, size_t len)
968{
969 struct input_ctx *ictx = wp->ictx;
970 struct screen_write_ctx *sctx = &ictx->ctx;
971
972 if (len == 0)
973 return;
974
975 window_update_activity(wp->window);
976 wp->flags |= PANE_CHANGED0x80;
977
978 /* Flag new input while in a mode. */
979 if (!TAILQ_EMPTY(&wp->modes)(((&wp->modes)->tqh_first) == ((void *)0)))
980 wp->flags |= PANE_UNSEENCHANGES0x2000;
981
982 /* NULL wp if there is a mode set as don't want to update the tty. */
983 if (TAILQ_EMPTY(&wp->modes)(((&wp->modes)->tqh_first) == ((void *)0)))
984 screen_write_start_pane(sctx, wp, &wp->base);
985 else
986 screen_write_start(sctx, &wp->base);
987
988 log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
989 ictx->state->name, len, (int)len, buf);
990
991 input_parse(ictx, buf, len);
992 screen_write_stop(sctx);
993}
994
995/* Parse given input for screen. */
996void
997input_parse_screen(struct input_ctx *ictx, struct screen *s,
998 screen_write_init_ctx_cb cb, void *arg, u_char *buf, size_t len)
999{
1000 struct screen_write_ctx *sctx = &ictx->ctx;
1001
1002 if (len == 0)
1
Assuming 'len' is not equal to 0
→
2
←
Taking false branch
→
1003 return;
1004
1005 screen_write_start_callback(sctx, s, cb, arg);
3
←
Value assigned to field 'state'
→
1006 input_parse(ictx, buf, len);
4
←
Calling 'input_parse'
→
1007 screen_write_stop(sctx);
1008}
1009
1010/* Split the parameter list (if any). */
1011static int
1012input_split(struct input_ctx *ictx)
1013{
1014 const char *errstr;
1015 char *ptr, *out;
1016 struct input_param *ip;
1017 u_int i;
1018
1019 for (i = 0; i < ictx->param_list_len; i++) {
1020 if (ictx->param_list[i].type == INPUT_STRING)
1021 free(ictx->param_list[i].str);
1022 }
1023 ictx->param_list_len = 0;
1024
1025 if (ictx->param_len == 0)
1026 return (0);
1027 ip = &ictx->param_list[0];
1028
1029 ptr = ictx->param_buf;
1030 while ((out = strsep(&ptr, ";")) != NULL((void *)0)) {
1031 if (*out == '\0')
1032 ip->type = INPUT_MISSING;
1033 else {
1034 if (strchr(out, ':') != NULL((void *)0)) {
1035 ip->type = INPUT_STRING;
1036 ip->str = xstrdup(out);
1037 } else {
1038 ip->type = INPUT_NUMBER;
1039 ip->num = strtonum(out, 0, INT_MAX0x7fffffff, &errstr);
1040 if (errstr != NULL((void *)0))
1041 return (-1);
1042 }
1043 }
1044 ip = &ictx->param_list[++ictx->param_list_len];
1045 if (ictx->param_list_len == nitems(ictx->param_list)(sizeof((ictx->param_list)) / sizeof((ictx->param_list)
[0])))
1046 return (-1);
1047 }
1048
1049 for (i = 0; i < ictx->param_list_len; i++) {
1050 ip = &ictx->param_list[i];
1051 if (ip->type == INPUT_MISSING)
1052 log_debug("parameter %u: missing", i);
1053 else if (ip->type == INPUT_STRING)
1054 log_debug("parameter %u: string %s", i, ip->str);
1055 else if (ip->type == INPUT_NUMBER)
1056 log_debug("parameter %u: number %d", i, ip->num);
1057 }
1058
1059 return (0);
1060}
1061
1062/* Get an argument or return default value. */
1063static int
1064input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
1065{
1066 struct input_param *ip;
1067 int retval;
1068
1069 if (validx >= ictx->param_list_len)
1070 return (defval);
1071 ip = &ictx->param_list[validx];
1072 if (ip->type == INPUT_MISSING)
1073 return (defval);
1074 if (ip->type == INPUT_STRING)
1075 return (-1);
1076 retval = ip->num;
1077 if (retval < minval)
1078 return (minval);
1079 return (retval);
1080}
1081
1082/* Reply to terminal query. */
1083static void
1084input_reply(struct input_ctx *ictx, const char *fmt, ...)
1085{
1086 struct bufferevent *bev = ictx->event;
1087 va_list ap;
1088 char *reply;
1089
1090 if (bev == NULL((void *)0))
1091 return;
1092
1093 va_start(ap, fmt)__builtin_va_start((ap), fmt);
1094 xvasprintf(&reply, fmt, ap);
1095 va_end(ap)__builtin_va_end((ap));
1096
1097 log_debug("%s: %s", __func__, reply);
1098 bufferevent_write(bev, reply, strlen(reply));
1099 free(reply);
1100}
1101
1102/* Clear saved state. */
1103static void
1104input_clear(struct input_ctx *ictx)
1105{
1106 event_del(&ictx->timer);
1107
1108 *ictx->interm_buf = '\0';
1109 ictx->interm_len = 0;
1110
1111 *ictx->param_buf = '\0';
1112 ictx->param_len = 0;
1113
1114 *ictx->input_buf = '\0';
1115 ictx->input_len = 0;
1116
1117 ictx->input_end = INPUT_END_ST;
1118
1119 ictx->flags &= ~INPUT_DISCARD0x1;
1120}
1121
1122/* Reset for ground state. */
1123static void
1124input_ground(struct input_ctx *ictx)
1125{
1126 event_del(&ictx->timer);
1127 evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground)(ictx->since_ground)->off);
1128
1129 if (ictx->input_space > INPUT_BUF_START32) {
1130 ictx->input_space = INPUT_BUF_START32;
1131 ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START32);
1132 }
1133}
1134
1135/* Output this character to the screen. */
1136static int
1137input_print(struct input_ctx *ictx)
1138{
1139 struct screen_write_ctx *sctx = &ictx->ctx;
1140 int set;
1141
1142 ictx->utf8started = 0; /* can't be valid UTF-8 */
1143
1144 set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1145 if (set == 1)
1146 ictx->cell.cell.attr |= GRID_ATTR_CHARSET0x80;
1147 else
1148 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET0x80;
1149
1150 utf8_set(&ictx->cell.cell.data, ictx->ch);
1151 screen_write_collect_add(sctx, &ictx->cell.cell);
1152 ictx->last = ictx->ch;
1153
1154 ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET0x80;
1155
1156 return (0);
1157}
1158
1159/* Collect intermediate string. */
1160static int
1161input_intermediate(struct input_ctx *ictx)
1162{
1163 if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1164 ictx->flags |= INPUT_DISCARD0x1;
1165 else {
1166 ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1167 ictx->interm_buf[ictx->interm_len] = '\0';
1168 }
1169
1170 return (0);
1171}
1172
1173/* Collect parameter string. */
1174static int
1175input_parameter(struct input_ctx *ictx)
1176{
1177 if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1178 ictx->flags |= INPUT_DISCARD0x1;
1179 else {
1180 ictx->param_buf[ictx->param_len++] = ictx->ch;
1181 ictx->param_buf[ictx->param_len] = '\0';
1182 }
1183
1184 return (0);
1185}
1186
1187/* Collect input string. */
1188static int
1189input_input(struct input_ctx *ictx)
1190{
1191 size_t available;
1192
1193 available = ictx->input_space;
1194 while (ictx->input_len + 1 >= available) {
1195 available *= 2;
1196 if (available > INPUT_BUF_LIMIT1048576) {
1197 ictx->flags |= INPUT_DISCARD0x1;
1198 return (0);
1199 }
1200 ictx->input_buf = xrealloc(ictx->input_buf, available);
1201 ictx->input_space = available;
1202 }
1203 ictx->input_buf[ictx->input_len++] = ictx->ch;
1204 ictx->input_buf[ictx->input_len] = '\0';
1205
1206 return (0);
1207}
1208
1209/* Execute C0 control sequence. */
1210static int
1211input_c0_dispatch(struct input_ctx *ictx)
1212{
1213 struct screen_write_ctx *sctx = &ictx->ctx;
1214 struct window_pane *wp = ictx->wp;
1215 struct screen *s = sctx->s;
1216
1217 ictx->utf8started = 0; /* can't be valid UTF-8 */
1218
1219 log_debug("%s: '%c'", __func__, ictx->ch);
1220
1221 switch (ictx->ch) {
1222 case '\000': /* NUL */
1223 break;
1224 case '\007': /* BEL */
1225 if (wp != NULL((void *)0))
1226 alerts_queue(wp->window, WINDOW_BELL0x1);
1227 break;
1228 case '\010': /* BS */
1229 screen_write_backspace(sctx);
1230 break;
1231 case '\011': /* HT */
1232 /* Don't tab beyond the end of the line. */
1233 if (s->cx >= screen_size_x(s)((s)->grid->sx) - 1)
1234 break;
1235
1236 /* Find the next tab point, or use the last column if none. */
1237 do {
1238 s->cx++;
1239 if (bit_test(s->tabs, s->cx)((s->tabs)[((s->cx) >> 3)] & (1 << ((s->
cx)&0x7))))
1240 break;
1241 } while (s->cx < screen_size_x(s)((s)->grid->sx) - 1);
1242 break;
1243 case '\012': /* LF */
1244 case '\013': /* VT */
1245 case '\014': /* FF */
1246 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1247 if (s->mode & MODE_CRLF0x4000)
1248 screen_write_carriagereturn(sctx);
1249 break;
1250 case '\015': /* CR */
1251 screen_write_carriagereturn(sctx);
1252 break;
1253 case '\016': /* SO */
1254 ictx->cell.set = 1;
1255 break;
1256 case '\017': /* SI */
1257 ictx->cell.set = 0;
1258 break;
1259 default:
1260 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1261 break;
1262 }
1263
1264 ictx->last = -1;
1265 return (0);
1266}
1267
1268/* Execute escape sequence. */
1269static int
1270input_esc_dispatch(struct input_ctx *ictx)
1271{
1272 struct screen_write_ctx *sctx = &ictx->ctx;
1273 struct screen *s = sctx->s;
1274 struct input_table_entry *entry;
1275
1276 if (ictx->flags & INPUT_DISCARD0x1)
1277 return (0);
1278 log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1279
1280 entry = bsearch(ictx, input_esc_table, nitems(input_esc_table)(sizeof((input_esc_table)) / sizeof((input_esc_table)[0])),
1281 sizeof input_esc_table[0], input_table_compare);
1282 if (entry == NULL((void *)0)) {
1283 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1284 return (0);
1285 }
1286
1287 switch (entry->type) {
1288 case INPUT_ESC_RIS:
1289 colour_palette_clear(ictx->palette);
1290 input_reset_cell(ictx);
1291 screen_write_reset(sctx);
1292 screen_write_fullredraw(sctx);
1293 break;
1294 case INPUT_ESC_IND:
1295 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1296 break;
1297 case INPUT_ESC_NEL:
1298 screen_write_carriagereturn(sctx);
1299 screen_write_linefeed(sctx, 0, ictx->cell.cell.bg);
1300 break;
1301 case INPUT_ESC_HTS:
1302 if (s->cx < screen_size_x(s)((s)->grid->sx))
1303 bit_set(s->tabs, s->cx)((s->tabs)[((s->cx) >> 3)] |= (1 << ((s->
cx)&0x7)));
1304 break;
1305 case INPUT_ESC_RI:
1306 screen_write_reverseindex(sctx, ictx->cell.cell.bg);
1307 break;
1308 case INPUT_ESC_DECKPAM:
1309 screen_write_mode_set(sctx, MODE_KKEYPAD0x8);
1310 break;
1311 case INPUT_ESC_DECKPNM:
1312 screen_write_mode_clear(sctx, MODE_KKEYPAD0x8);
1313 break;
1314 case INPUT_ESC_DECSC:
1315 input_save_state(ictx);
1316 break;
1317 case INPUT_ESC_DECRC:
1318 input_restore_state(ictx);
1319 break;
1320 case INPUT_ESC_DECALN:
1321 screen_write_alignmenttest(sctx);
1322 break;
1323 case INPUT_ESC_SCSG0_ON:
1324 ictx->cell.g0set = 1;
1325 break;
1326 case INPUT_ESC_SCSG0_OFF:
1327 ictx->cell.g0set = 0;
1328 break;
1329 case INPUT_ESC_SCSG1_ON:
1330 ictx->cell.g1set = 1;
1331 break;
1332 case INPUT_ESC_SCSG1_OFF:
1333 ictx->cell.g1set = 0;
1334 break;
1335 case INPUT_ESC_ST:
1336 /* ST terminates OSC but the state transition already did it. */
1337 break;
1338 }
1339
1340 ictx->last = -1;
1341 return (0);
1342}
1343
1344/* Execute control sequence. */
1345static int
1346input_csi_dispatch(struct input_ctx *ictx)
1347{
1348 struct screen_write_ctx *sctx = &ictx->ctx;
1349 struct screen *s = sctx->s;
1350 struct input_table_entry *entry;
1351 int i, n, m;
1352 u_int cx, bg = ictx->cell.cell.bg;
1353
1354 if (ictx->flags & INPUT_DISCARD0x1)
1355 return (0);
1356
1357 log_debug("%s: '%c' \"%s\" \"%s\"", __func__, ictx->ch,
1358 ictx->interm_buf, ictx->param_buf);
1359
1360 if (input_split(ictx) != 0)
1361 return (0);
1362
1363 entry = bsearch(ictx, input_csi_table, nitems(input_csi_table)(sizeof((input_csi_table)) / sizeof((input_csi_table)[0])),
1364 sizeof input_csi_table[0], input_table_compare);
1365 if (entry == NULL((void *)0)) {
1366 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1367 return (0);
1368 }
1369
1370 switch (entry->type) {
1371 case INPUT_CSI_CBT:
1372 /* Find the previous tab point, n times. */
1373 cx = s->cx;
1374 if (cx > screen_size_x(s)((s)->grid->sx) - 1)
1375 cx = screen_size_x(s)((s)->grid->sx) - 1;
1376 n = input_get(ictx, 0, 1, 1);
1377 if (n == -1)
1378 break;
1379 while (cx > 0 && n-- > 0) {
1380 do
1381 cx--;
1382 while (cx > 0 && !bit_test(s->tabs, cx)((s->tabs)[((cx) >> 3)] & (1 << ((cx)&
0x7))));
1383 }
1384 s->cx = cx;
1385 break;
1386 case INPUT_CSI_CUB:
1387 n = input_get(ictx, 0, 1, 1);
1388 if (n != -1)
1389 screen_write_cursorleft(sctx, n);
1390 break;
1391 case INPUT_CSI_CUD:
1392 n = input_get(ictx, 0, 1, 1);
1393 if (n != -1)
1394 screen_write_cursordown(sctx, n);
1395 break;
1396 case INPUT_CSI_CUF:
1397 n = input_get(ictx, 0, 1, 1);
1398 if (n != -1)
1399 screen_write_cursorright(sctx, n);
1400 break;
1401 case INPUT_CSI_CUP:
1402 n = input_get(ictx, 0, 1, 1);
1403 m = input_get(ictx, 1, 1, 1);
1404 if (n != -1 && m != -1)
1405 screen_write_cursormove(sctx, m - 1, n - 1, 1);
1406 break;
1407 case INPUT_CSI_MODSET:
1408 n = input_get(ictx, 0, 0, 0);
1409 m = input_get(ictx, 1, 0, 0);
1410 if (options_get_number(global_options, "extended-keys") == 2)
1411 break;
1412 if (n == 0 || (n == 4 && m == 0))
1413 screen_write_mode_clear(sctx, MODE_KEXTENDED0x8000);
1414 else if (n == 4 && (m == 1 || m == 2))
1415 screen_write_mode_set(sctx, MODE_KEXTENDED0x8000);
1416 break;
1417 case INPUT_CSI_MODOFF:
1418 n = input_get(ictx, 0, 0, 0);
1419 if (n == 4)
1420 screen_write_mode_clear(sctx, MODE_KEXTENDED0x8000);
1421 break;
1422 case INPUT_CSI_WINOPS:
1423 input_csi_dispatch_winops(ictx);
1424 break;
1425 case INPUT_CSI_CUU:
1426 n = input_get(ictx, 0, 1, 1);
1427 if (n != -1)
1428 screen_write_cursorup(sctx, n);
1429 break;
1430 case INPUT_CSI_CNL:
1431 n = input_get(ictx, 0, 1, 1);
1432 if (n != -1) {
1433 screen_write_carriagereturn(sctx);
1434 screen_write_cursordown(sctx, n);
1435 }
1436 break;
1437 case INPUT_CSI_CPL:
1438 n = input_get(ictx, 0, 1, 1);
1439 if (n != -1) {
1440 screen_write_carriagereturn(sctx);
1441 screen_write_cursorup(sctx, n);
1442 }
1443 break;
1444 case INPUT_CSI_DA:
1445 switch (input_get(ictx, 0, 0, 0)) {
1446 case -1:
1447 break;
1448 case 0:
1449 input_reply(ictx, "\033[?1;2c");
1450 break;
1451 default:
1452 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1453 break;
1454 }
1455 break;
1456 case INPUT_CSI_DA_TWO:
1457 switch (input_get(ictx, 0, 0, 0)) {
1458 case -1:
1459 break;
1460 case 0:
1461 input_reply(ictx, "\033[>84;0;0c");
1462 break;
1463 default:
1464 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1465 break;
1466 }
1467 break;
1468 case INPUT_CSI_ECH:
1469 n = input_get(ictx, 0, 1, 1);
1470 if (n != -1)
1471 screen_write_clearcharacter(sctx, n, bg);
1472 break;
1473 case INPUT_CSI_DCH:
1474 n = input_get(ictx, 0, 1, 1);
1475 if (n != -1)
1476 screen_write_deletecharacter(sctx, n, bg);
1477 break;
1478 case INPUT_CSI_DECSTBM:
1479 n = input_get(ictx, 0, 1, 1);
1480 m = input_get(ictx, 1, 1, screen_size_y(s)((s)->grid->sy));
1481 if (n != -1 && m != -1)
1482 screen_write_scrollregion(sctx, n - 1, m - 1);
1483 break;
1484 case INPUT_CSI_DL:
1485 n = input_get(ictx, 0, 1, 1);
1486 if (n != -1)
1487 screen_write_deleteline(sctx, n, bg);
1488 break;
1489 case INPUT_CSI_DSR:
1490 switch (input_get(ictx, 0, 0, 0)) {
1491 case -1:
1492 break;
1493 case 5:
1494 input_reply(ictx, "\033[0n");
1495 break;
1496 case 6:
1497 input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1498 break;
1499 default:
1500 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1501 break;
1502 }
1503 break;
1504 case INPUT_CSI_ED:
1505 switch (input_get(ictx, 0, 0, 0)) {
1506 case -1:
1507 break;
1508 case 0:
1509 screen_write_clearendofscreen(sctx, bg);
1510 break;
1511 case 1:
1512 screen_write_clearstartofscreen(sctx, bg);
1513 break;
1514 case 2:
1515 screen_write_clearscreen(sctx, bg);
1516 break;
1517 case 3:
1518 if (input_get(ictx, 1, 0, 0) == 0) {
1519 /*
1520 * Linux console extension to clear history
1521 * (for example before locking the screen).
1522 */
1523 screen_write_clearhistory(sctx);
1524 }
1525 break;
1526 default:
1527 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1528 break;
1529 }
1530 break;
1531 case INPUT_CSI_EL:
1532 switch (input_get(ictx, 0, 0, 0)) {
1533 case -1:
1534 break;
1535 case 0:
1536 screen_write_clearendofline(sctx, bg);
1537 break;
1538 case 1:
1539 screen_write_clearstartofline(sctx, bg);
1540 break;
1541 case 2:
1542 screen_write_clearline(sctx, bg);
1543 break;
1544 default:
1545 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1546 break;
1547 }
1548 break;
1549 case INPUT_CSI_HPA:
1550 n = input_get(ictx, 0, 1, 1);
1551 if (n != -1)
1552 screen_write_cursormove(sctx, n - 1, -1, 1);
1553 break;
1554 case INPUT_CSI_ICH:
1555 n = input_get(ictx, 0, 1, 1);
1556 if (n != -1)
1557 screen_write_insertcharacter(sctx, n, bg);
1558 break;
1559 case INPUT_CSI_IL:
1560 n = input_get(ictx, 0, 1, 1);
1561 if (n != -1)
1562 screen_write_insertline(sctx, n, bg);
1563 break;
1564 case INPUT_CSI_REP:
1565 n = input_get(ictx, 0, 1, 1);
1566 if (n == -1)
1567 break;
1568
1569 m = screen_size_x(s)((s)->grid->sx) - s->cx;
1570 if (n > m)
1571 n = m;
1572
1573 if (ictx->last == -1)
1574 break;
1575 ictx->ch = ictx->last;
1576
1577 for (i = 0; i < n; i++)
1578 input_print(ictx);
1579 break;
1580 case INPUT_CSI_RCP:
1581 input_restore_state(ictx);
1582 break;
1583 case INPUT_CSI_RM:
1584 input_csi_dispatch_rm(ictx);
1585 break;
1586 case INPUT_CSI_RM_PRIVATE:
1587 input_csi_dispatch_rm_private(ictx);
1588 break;
1589 case INPUT_CSI_SCP:
1590 input_save_state(ictx);
1591 break;
1592 case INPUT_CSI_SGR:
1593 input_csi_dispatch_sgr(ictx);
1594 break;
1595 case INPUT_CSI_SM:
1596 input_csi_dispatch_sm(ictx);
1597 break;
1598 case INPUT_CSI_SM_PRIVATE:
1599 input_csi_dispatch_sm_private(ictx);
1600 break;
1601 case INPUT_CSI_SM_GRAPHICS:
1602 input_csi_dispatch_sm_graphics(ictx);
1603 break;
1604 case INPUT_CSI_SU:
1605 n = input_get(ictx, 0, 1, 1);
1606 if (n != -1)
1607 screen_write_scrollup(sctx, n, bg);
1608 break;
1609 case INPUT_CSI_SD:
1610 n = input_get(ictx, 0, 1, 1);
1611 if (n != -1)
1612 screen_write_scrolldown(sctx, n, bg);
1613 break;
1614 case INPUT_CSI_TBC:
1615 switch (input_get(ictx, 0, 0, 0)) {
1616 case -1:
1617 break;
1618 case 0:
1619 if (s->cx < screen_size_x(s)((s)->grid->sx))
1620 bit_clear(s->tabs, s->cx)((s->tabs)[((s->cx) >> 3)] &= ~(1 << ((
s->cx)&0x7)));
1621 break;
1622 case 3:
1623 bit_nclear(s->tabs, 0, screen_size_x(s) - 1)do { register bitstr_t *__name = (s->tabs); register int __start
= (0), __stop = (((s)->grid->sx) - 1); while (__start <=
__stop) { ((__name)[((__start) >> 3)] &= ~(1 <<
((__start)&0x7))); __start++; } } while(0);
1624 break;
1625 default:
1626 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1627 break;
1628 }
1629 break;
1630 case INPUT_CSI_VPA:
1631 n = input_get(ictx, 0, 1, 1);
1632 if (n != -1)
1633 screen_write_cursormove(sctx, -1, n - 1, 1);
1634 break;
1635 case INPUT_CSI_DECSCUSR:
1636 n = input_get(ictx, 0, 0, 0);
1637 if (n != -1)
1638 screen_set_cursor_style(n, &s->cstyle, &s->mode);
1639 break;
1640 case INPUT_CSI_XDA:
1641 n = input_get(ictx, 0, 0, 0);
1642 if (n == 0)
1643 input_reply(ictx, "\033P>|tmux %s\033\\", getversion());
1644 break;
1645
1646 }
1647
1648 ictx->last = -1;
1649 return (0);
1650}
1651
1652/* Handle CSI RM. */
1653static void
1654input_csi_dispatch_rm(struct input_ctx *ictx)
1655{
1656 struct screen_write_ctx *sctx = &ictx->ctx;
1657 u_int i;
1658
1659 for (i = 0; i < ictx->param_list_len; i++) {
1660 switch (input_get(ictx, i, 0, -1)) {
1661 case -1:
1662 break;
1663 case 4: /* IRM */
1664 screen_write_mode_clear(sctx, MODE_INSERT0x2);
1665 break;
1666 case 34:
1667 screen_write_mode_set(sctx, MODE_CURSOR_VERY_VISIBLE0x10000);
1668 break;
1669 default:
1670 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1671 break;
1672 }
1673 }
1674}
1675
1676/* Handle CSI private RM. */
1677static void
1678input_csi_dispatch_rm_private(struct input_ctx *ictx)
1679{
1680 struct screen_write_ctx *sctx = &ictx->ctx;
1681 struct grid_cell *gc = &ictx->cell.cell;
1682 u_int i;
1683
1684 for (i = 0; i < ictx->param_list_len; i++) {
1685 switch (input_get(ictx, i, 0, -1)) {
1686 case -1:
1687 break;
1688 case 1: /* DECCKM */
1689 screen_write_mode_clear(sctx, MODE_KCURSOR0x4);
1690 break;
1691 case 3: /* DECCOLM */
1692 screen_write_cursormove(sctx, 0, 0, 1);
1693 screen_write_clearscreen(sctx, gc->bg);
1694 break;
1695 case 6: /* DECOM */
1696 screen_write_mode_clear(sctx, MODE_ORIGIN0x2000);
1697 screen_write_cursormove(sctx, 0, 0, 1);
1698 break;
1699 case 7: /* DECAWM */
1700 screen_write_mode_clear(sctx, MODE_WRAP0x10);
1701 break;
1702 case 12:
1703 screen_write_mode_clear(sctx, MODE_CURSOR_BLINKING0x80);
1704 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET0x20000);
1705 break;
1706 case 25: /* TCEM */
1707 screen_write_mode_clear(sctx, MODE_CURSOR0x1);
1708 break;
1709 case 1000:
1710 case 1001:
1711 case 1002:
1712 case 1003:
1713 screen_write_mode_clear(sctx, ALL_MOUSE_MODES(0x20|0x40|0x1000));
1714 break;
1715 case 1004:
1716 screen_write_mode_clear(sctx, MODE_FOCUSON0x800);
1717 break;
1718 case 1005:
1719 screen_write_mode_clear(sctx, MODE_MOUSE_UTF80x100);
1720 break;
1721 case 1006:
1722 screen_write_mode_clear(sctx, MODE_MOUSE_SGR0x200);
1723 break;
1724 case 47:
1725 case 1047:
1726 screen_write_alternateoff(sctx, gc, 0);
1727 break;
1728 case 1049:
1729 screen_write_alternateoff(sctx, gc, 1);
1730 break;
1731 case 2004:
1732 screen_write_mode_clear(sctx, MODE_BRACKETPASTE0x400);
1733 break;
1734 default:
1735 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1736 break;
1737 }
1738 }
1739}
1740
1741/* Handle CSI SM. */
1742static void
1743input_csi_dispatch_sm(struct input_ctx *ictx)
1744{
1745 struct screen_write_ctx *sctx = &ictx->ctx;
1746 u_int i;
1747
1748 for (i = 0; i < ictx->param_list_len; i++) {
1749 switch (input_get(ictx, i, 0, -1)) {
1750 case -1:
1751 break;
1752 case 4: /* IRM */
1753 screen_write_mode_set(sctx, MODE_INSERT0x2);
1754 break;
1755 case 34:
1756 screen_write_mode_clear(sctx, MODE_CURSOR_VERY_VISIBLE0x10000);
1757 break;
1758 default:
1759 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1760 break;
1761 }
1762 }
1763}
1764
1765/* Handle CSI private SM. */
1766static void
1767input_csi_dispatch_sm_private(struct input_ctx *ictx)
1768{
1769 struct screen_write_ctx *sctx = &ictx->ctx;
1770 struct grid_cell *gc = &ictx->cell.cell;
1771 u_int i;
1772
1773 for (i = 0; i < ictx->param_list_len; i++) {
1774 switch (input_get(ictx, i, 0, -1)) {
1775 case -1:
1776 break;
1777 case 1: /* DECCKM */
1778 screen_write_mode_set(sctx, MODE_KCURSOR0x4);
1779 break;
1780 case 3: /* DECCOLM */
1781 screen_write_cursormove(sctx, 0, 0, 1);
1782 screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1783 break;
1784 case 6: /* DECOM */
1785 screen_write_mode_set(sctx, MODE_ORIGIN0x2000);
1786 screen_write_cursormove(sctx, 0, 0, 1);
1787 break;
1788 case 7: /* DECAWM */
1789 screen_write_mode_set(sctx, MODE_WRAP0x10);
1790 break;
1791 case 12:
1792 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING0x80);
1793 screen_write_mode_set(sctx, MODE_CURSOR_BLINKING_SET0x20000);
1794 break;
1795 case 25: /* TCEM */
1796 screen_write_mode_set(sctx, MODE_CURSOR0x1);
1797 break;
1798 case 1000:
1799 screen_write_mode_clear(sctx, ALL_MOUSE_MODES(0x20|0x40|0x1000));
1800 screen_write_mode_set(sctx, MODE_MOUSE_STANDARD0x20);
1801 break;
1802 case 1002:
1803 screen_write_mode_clear(sctx, ALL_MOUSE_MODES(0x20|0x40|0x1000));
1804 screen_write_mode_set(sctx, MODE_MOUSE_BUTTON0x40);
1805 break;
1806 case 1003:
1807 screen_write_mode_clear(sctx, ALL_MOUSE_MODES(0x20|0x40|0x1000));
1808 screen_write_mode_set(sctx, MODE_MOUSE_ALL0x1000);
1809 break;
1810 case 1004:
1811 screen_write_mode_set(sctx, MODE_FOCUSON0x800);
1812 break;
1813 case 1005:
1814 screen_write_mode_set(sctx, MODE_MOUSE_UTF80x100);
1815 break;
1816 case 1006:
1817 screen_write_mode_set(sctx, MODE_MOUSE_SGR0x200);
1818 break;
1819 case 47:
1820 case 1047:
1821 screen_write_alternateon(sctx, gc, 0);
1822 break;
1823 case 1049:
1824 screen_write_alternateon(sctx, gc, 1);
1825 break;
1826 case 2004:
1827 screen_write_mode_set(sctx, MODE_BRACKETPASTE0x400);
1828 break;
1829 default:
1830 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1831 break;
1832 }
1833 }
1834}
1835
1836/* Handle CSI graphics SM. */
1837static void
1838input_csi_dispatch_sm_graphics(__unused__attribute__((__unused__)) struct input_ctx *ictx)
1839{
1840}
1841
1842/* Handle CSI window operations. */
1843static void
1844input_csi_dispatch_winops(struct input_ctx *ictx)
1845{
1846 struct screen_write_ctx *sctx = &ictx->ctx;
1847 struct screen *s = sctx->s;
1848 struct window_pane *wp = ictx->wp;
1849 struct window *w = NULL((void *)0);
1850 u_int x = screen_size_x(s)((s)->grid->sx), y = screen_size_y(s)((s)->grid->sy);
1851 int n, m;
1852
1853 if (wp != NULL((void *)0))
1854 w = wp->window;
1855
1856 m = 0;
1857 while ((n = input_get(ictx, m, 0, -1)) != -1) {
1858 switch (n) {
1859 case 1:
1860 case 2:
1861 case 5:
1862 case 6:
1863 case 7:
1864 case 11:
1865 case 13:
1866 case 20:
1867 case 21:
1868 case 24:
1869 break;
1870 case 3:
1871 case 4:
1872 case 8:
1873 m++;
1874 if (input_get(ictx, m, 0, -1) == -1)
1875 return;
1876 /* FALLTHROUGH */
1877 case 9:
1878 case 10:
1879 m++;
1880 if (input_get(ictx, m, 0, -1) == -1)
1881 return;
1882 break;
1883 case 14:
1884 if (w == NULL((void *)0))
1885 break;
1886 input_reply(ictx, "\033[4;%u;%ut", y * w->ypixel,
1887 x * w->xpixel);
1888 break;
1889 case 15:
1890 if (w == NULL((void *)0))
1891 break;
1892 input_reply(ictx, "\033[5;%u;%ut", y * w->ypixel,
1893 x * w->xpixel);
1894 break;
1895 case 16:
1896 if (w == NULL((void *)0))
1897 break;
1898 input_reply(ictx, "\033[6;%u;%ut", w->ypixel,
1899 w->xpixel);
1900 break;
1901 case 18:
1902 input_reply(ictx, "\033[8;%u;%ut", y, x);
1903 break;
1904 case 19:
1905 input_reply(ictx, "\033[9;%u;%ut", y, x);
1906 break;
1907 case 22:
1908 m++;
1909 switch (input_get(ictx, m, 0, -1)) {
1910 case -1:
1911 return;
1912 case 0:
1913 case 2:
1914 screen_push_title(sctx->s);
1915 break;
1916 }
1917 break;
1918 case 23:
1919 m++;
1920 switch (input_get(ictx, m, 0, -1)) {
1921 case -1:
1922 return;
1923 case 0:
1924 case 2:
1925 screen_pop_title(sctx->s);
1926 if (wp == NULL((void *)0))
1927 break;
1928 notify_pane("pane-title-changed", wp);
1929 server_redraw_window_borders(w);
1930 server_status_window(w);
1931 break;
1932 }
1933 break;
1934 default:
1935 log_debug("%s: unknown '%c'", __func__, ictx->ch);
1936 break;
1937 }
1938 m++;
1939 }
1940}
1941
1942/* Helper for 256 colour SGR. */
1943static int
1944input_csi_dispatch_sgr_256_do(struct input_ctx *ictx, int fgbg, int c)
1945{
1946 struct grid_cell *gc = &ictx->cell.cell;
1947
1948 if (c == -1 || c > 255) {
1949 if (fgbg == 38)
1950 gc->fg = 8;
1951 else if (fgbg == 48)
1952 gc->bg = 8;
1953 } else {
1954 if (fgbg == 38)
1955 gc->fg = c | COLOUR_FLAG_2560x01000000;
1956 else if (fgbg == 48)
1957 gc->bg = c | COLOUR_FLAG_2560x01000000;
1958 else if (fgbg == 58)
1959 gc->us = c | COLOUR_FLAG_2560x01000000;
1960 }
1961 return (1);
1962}
1963
1964/* Handle CSI SGR for 256 colours. */
1965static void
1966input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1967{
1968 int c;
1969
1970 c = input_get(ictx, (*i) + 1, 0, -1);
1971 if (input_csi_dispatch_sgr_256_do(ictx, fgbg, c))
1972 (*i)++;
1973}
1974
1975/* Helper for RGB colour SGR. */
1976static int
1977input_csi_dispatch_sgr_rgb_do(struct input_ctx *ictx, int fgbg, int r, int g,
1978 int b)
1979{
1980 struct grid_cell *gc = &ictx->cell.cell;
1981
1982 if (r == -1 || r > 255)
1983 return (0);
1984 if (g == -1 || g > 255)
1985 return (0);
1986 if (b == -1 || b > 255)
1987 return (0);
1988
1989 if (fgbg == 38)
1990 gc->fg = colour_join_rgb(r, g, b);
1991 else if (fgbg == 48)
1992 gc->bg = colour_join_rgb(r, g, b);
1993 else if (fgbg == 58)
1994 gc->us = colour_join_rgb(r, g, b);
1995 return (1);
1996}
1997
1998/* Handle CSI SGR for RGB colours. */
1999static void
2000input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
2001{
2002 int r, g, b;
2003
2004 r = input_get(ictx, (*i) + 1, 0, -1);
2005 g = input_get(ictx, (*i) + 2, 0, -1);
2006 b = input_get(ictx, (*i) + 3, 0, -1);
2007 if (input_csi_dispatch_sgr_rgb_do(ictx, fgbg, r, g, b))
2008 (*i) += 3;
2009}
2010
2011/* Handle CSI SGR with a ISO parameter. */
2012static void
2013input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
2014{
2015 struct grid_cell *gc = &ictx->cell.cell;
2016 char *s = ictx->param_list[i].str, *copy, *ptr, *out;
2017 int p[8];
2018 u_int n;
2019 const char *errstr;
2020
2021 for (n = 0; n < nitems(p)(sizeof((p)) / sizeof((p)[0])); n++)
2022 p[n] = -1;
2023 n = 0;
2024
2025 ptr = copy = xstrdup(s);
2026 while ((out = strsep(&ptr, ":")) != NULL((void *)0)) {
2027 if (*out != '\0') {
2028 p[n++] = strtonum(out, 0, INT_MAX0x7fffffff, &errstr);
2029 if (errstr != NULL((void *)0) || n == nitems(p)(sizeof((p)) / sizeof((p)[0]))) {
2030 free(copy);
2031 return;
2032 }
2033 } else {
2034 n++;
2035 if (n == nitems(p)(sizeof((p)) / sizeof((p)[0]))) {
2036 free(copy);
2037 return;
2038 }
2039 }
2040 log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
2041 }
2042 free(copy);
2043
2044 if (n == 0)
2045 return;
2046 if (p[0] == 4) {
2047 if (n != 2)
2048 return;
2049 switch (p[1]) {
2050 case 0:
2051 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2052 break;
2053 case 1:
2054 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2055 gc->attr |= GRID_ATTR_UNDERSCORE0x4;
2056 break;
2057 case 2:
2058 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2059 gc->attr |= GRID_ATTR_UNDERSCORE_20x200;
2060 break;
2061 case 3:
2062 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2063 gc->attr |= GRID_ATTR_UNDERSCORE_30x400;
2064 break;
2065 case 4:
2066 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2067 gc->attr |= GRID_ATTR_UNDERSCORE_40x800;
2068 break;
2069 case 5:
2070 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2071 gc->attr |= GRID_ATTR_UNDERSCORE_50x1000;
2072 break;
2073 }
2074 return;
2075 }
2076 if (n < 2 || (p[0] != 38 && p[0] != 48 && p[0] != 58))
2077 return;
2078 switch (p[1]) {
2079 case 2:
2080 if (n < 3)
2081 break;
2082 if (n == 5)
2083 i = 2;
2084 else
2085 i = 3;
2086 if (n < i + 3)
2087 break;
2088 input_csi_dispatch_sgr_rgb_do(ictx, p[0], p[i], p[i + 1],
2089 p[i + 2]);
2090 break;
2091 case 5:
2092 if (n < 3)
2093 break;
2094 input_csi_dispatch_sgr_256_do(ictx, p[0], p[2]);
2095 break;
2096 }
2097}
2098
2099/* Handle CSI SGR. */
2100static void
2101input_csi_dispatch_sgr(struct input_ctx *ictx)
2102{
2103 struct grid_cell *gc = &ictx->cell.cell;
2104 u_int i, link;
2105 int n;
2106
2107 if (ictx->param_list_len == 0) {
2108 memcpy(gc, &grid_default_cell, sizeof *gc);
2109 return;
2110 }
2111
2112 for (i = 0; i < ictx->param_list_len; i++) {
2113 if (ictx->param_list[i].type == INPUT_STRING) {
2114 input_csi_dispatch_sgr_colon(ictx, i);
2115 continue;
2116 }
2117 n = input_get(ictx, i, 0, 0);
2118 if (n == -1)
2119 continue;
2120
2121 if (n == 38 || n == 48 || n == 58) {
2122 i++;
2123 switch (input_get(ictx, i, 0, -1)) {
2124 case 2:
2125 input_csi_dispatch_sgr_rgb(ictx, n, &i);
2126 break;
2127 case 5:
2128 input_csi_dispatch_sgr_256(ictx, n, &i);
2129 break;
2130 }
2131 continue;
2132 }
2133
2134 switch (n) {
2135 case 0:
2136 link = gc->link;
2137 memcpy(gc, &grid_default_cell, sizeof *gc);
2138 gc->link = link;
2139 break;
2140 case 1:
2141 gc->attr |= GRID_ATTR_BRIGHT0x1;
2142 break;
2143 case 2:
2144 gc->attr |= GRID_ATTR_DIM0x2;
2145 break;
2146 case 3:
2147 gc->attr |= GRID_ATTR_ITALICS0x40;
2148 break;
2149 case 4:
2150 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2151 gc->attr |= GRID_ATTR_UNDERSCORE0x4;
2152 break;
2153 case 5:
2154 case 6:
2155 gc->attr |= GRID_ATTR_BLINK0x8;
2156 break;
2157 case 7:
2158 gc->attr |= GRID_ATTR_REVERSE0x10;
2159 break;
2160 case 8:
2161 gc->attr |= GRID_ATTR_HIDDEN0x20;
2162 break;
2163 case 9:
2164 gc->attr |= GRID_ATTR_STRIKETHROUGH0x100;
2165 break;
2166 case 21:
2167 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2168 gc->attr |= GRID_ATTR_UNDERSCORE_20x200;
2169 break;
2170 case 22:
2171 gc->attr &= ~(GRID_ATTR_BRIGHT0x1|GRID_ATTR_DIM0x2);
2172 break;
2173 case 23:
2174 gc->attr &= ~GRID_ATTR_ITALICS0x40;
2175 break;
2176 case 24:
2177 gc->attr &= ~GRID_ATTR_ALL_UNDERSCORE(0x4| 0x200| 0x400| 0x800| 0x1000);
2178 break;
2179 case 25:
2180 gc->attr &= ~GRID_ATTR_BLINK0x8;
2181 break;
2182 case 27:
2183 gc->attr &= ~GRID_ATTR_REVERSE0x10;
2184 break;
2185 case 28:
2186 gc->attr &= ~GRID_ATTR_HIDDEN0x20;
2187 break;
2188 case 29:
2189 gc->attr &= ~GRID_ATTR_STRIKETHROUGH0x100;
2190 break;
2191 case 30:
2192 case 31:
2193 case 32:
2194 case 33:
2195 case 34:
2196 case 35:
2197 case 36:
2198 case 37:
2199 gc->fg = n - 30;
2200 break;
2201 case 39:
2202 gc->fg = 8;
2203 break;
2204 case 40:
2205 case 41:
2206 case 42:
2207 case 43:
2208 case 44:
2209 case 45:
2210 case 46:
2211 case 47:
2212 gc->bg = n - 40;
2213 break;
2214 case 49:
2215 gc->bg = 8;
2216 break;
2217 case 53:
2218 gc->attr |= GRID_ATTR_OVERLINE0x2000;
2219 break;
2220 case 55:
2221 gc->attr &= ~GRID_ATTR_OVERLINE0x2000;
2222 break;
2223 case 59:
2224 gc->us = 8;
2225 break;
2226 case 90:
2227 case 91:
2228 case 92:
2229 case 93:
2230 case 94:
2231 case 95:
2232 case 96:
2233 case 97:
2234 gc->fg = n;
2235 break;
2236 case 100:
2237 case 101:
2238 case 102:
2239 case 103:
2240 case 104:
2241 case 105:
2242 case 106:
2243 case 107:
2244 gc->bg = n - 10;
2245 break;
2246 }
2247 }
2248}
2249
2250/* End of input with BEL. */
2251static int
2252input_end_bel(struct input_ctx *ictx)
2253{
2254 log_debug("%s", __func__);
2255
2256 ictx->input_end = INPUT_END_BEL;
2257
2258 return (0);
2259}
2260
2261/* DCS string started. */
2262static void
2263input_enter_dcs(struct input_ctx *ictx)
2264{
2265 log_debug("%s", __func__);
2266
2267 input_clear(ictx);
2268 input_start_timer(ictx);
2269 ictx->last = -1;
2270}
2271
2272/* DCS terminator (ST) received. */
2273static int
2274input_dcs_dispatch(struct input_ctx *ictx)
2275{
2276 struct window_pane *wp = ictx->wp;
2277 struct screen_write_ctx *sctx = &ictx->ctx;
2278 u_char *buf = ictx->input_buf;
2279 size_t len = ictx->input_len;
2280 const char prefix[] = "tmux;";
2281 const u_int prefixlen = (sizeof prefix) - 1;
2282 long long allow_passthrough = 0;
2283
2284 if (wp == NULL((void *)0))
2285 return (0);
2286 if (ictx->flags & INPUT_DISCARD0x1) {
2287 log_debug("%s: %zu bytes (discard)", __func__, len);
2288 return (0);
2289 }
2290 log_debug("%s: %zu bytes", __func__, len);
2291
2292 allow_passthrough = options_get_number(wp->options, "allow-passthrough");
2293 if (!allow_passthrough)
2294 return (0);
2295 log_debug("%s: \"%s\"", __func__, buf);
2296
2297 if (len >= prefixlen && strncmp(buf, prefix, prefixlen) == 0) {
2298 screen_write_rawstring(sctx, buf + prefixlen, len - prefixlen,
2299 allow_passthrough == 2);
2300 }
2301
2302 return (0);
2303}
2304
2305/* OSC string started. */
2306static void
2307input_enter_osc(struct input_ctx *ictx)
2308{
2309 log_debug("%s", __func__);
2310
2311 input_clear(ictx);
2312 input_start_timer(ictx);
2313 ictx->last = -1;
2314}
2315
2316/* OSC terminator (ST) received. */
2317static void
2318input_exit_osc(struct input_ctx *ictx)
2319{
2320 struct screen_write_ctx *sctx = &ictx->ctx;
2321 struct window_pane *wp = ictx->wp;
2322 u_char *p = ictx->input_buf;
2323 u_int option;
2324
2325 if (ictx->flags & INPUT_DISCARD0x1)
2326 return;
2327 if (ictx->input_len < 1 || *p < '0' || *p > '9')
2328 return;
2329
2330 log_debug("%s: \"%s\" (end %s)", __func__, p,
2331 ictx->input_end == INPUT_END_ST ? "ST" : "BEL");
2332
2333 option = 0;
2334 while (*p >= '0' && *p <= '9')
2335 option = option * 10 + *p++ - '0';
2336 if (*p != ';' && *p != '\0')
2337 return;
2338 if (*p == ';')
2339 p++;
2340
2341 switch (option) {
2342 case 0:
2343 case 2:
2344 if (screen_set_title(sctx->s, p) && wp != NULL((void *)0)) {
2345 notify_pane("pane-title-changed", wp);
2346 server_redraw_window_borders(wp->window);
2347 server_status_window(wp->window);
2348 }
2349 break;
2350 case 4:
2351 input_osc_4(ictx, p);
2352 break;
2353 case 7:
2354 if (utf8_isvalid(p)) {
2355 screen_set_path(sctx->s, p);
2356 if (wp != NULL((void *)0)) {
2357 server_redraw_window_borders(wp->window);
2358 server_status_window(wp->window);
2359 }
2360 }
2361 break;
2362 case 8:
2363 input_osc_8(ictx, p);
2364 break;
2365 case 10:
2366 input_osc_10(ictx, p);
2367 break;
2368 case 11:
2369 input_osc_11(ictx, p);
2370 break;
2371 case 12:
2372 input_osc_12(ictx, p);
2373 break;
2374 case 52:
2375 input_osc_52(ictx, p);
2376 break;
2377 case 104:
2378 input_osc_104(ictx, p);
2379 break;
2380 case 110:
2381 input_osc_110(ictx, p);
2382 break;
2383 case 111:
2384 input_osc_111(ictx, p);
2385 break;
2386 case 112:
2387 input_osc_112(ictx, p);
2388 break;
2389 case 133:
2390 input_osc_133(ictx, p);
2391 break;
2392 default:
2393 log_debug("%s: unknown '%u'", __func__, option);
2394 break;
2395 }
2396}
2397
2398/* APC string started. */
2399static void
2400input_enter_apc(struct input_ctx *ictx)
2401{
2402 log_debug("%s", __func__);
2403
2404 input_clear(ictx);
2405 input_start_timer(ictx);
2406 ictx->last = -1;
2407}
2408
2409/* APC terminator (ST) received. */
2410static void
2411input_exit_apc(struct input_ctx *ictx)
2412{
2413 struct screen_write_ctx *sctx = &ictx->ctx;
2414 struct window_pane *wp = ictx->wp;
2415
2416 if (ictx->flags & INPUT_DISCARD0x1)
2417 return;
2418 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2419
2420 if (screen_set_title(sctx->s, ictx->input_buf) && wp != NULL((void *)0)) {
2421 notify_pane("pane-title-changed", wp);
2422 server_redraw_window_borders(wp->window);
2423 server_status_window(wp->window);
2424 }
2425}
2426
2427/* Rename string started. */
2428static void
2429input_enter_rename(struct input_ctx *ictx)
2430{
2431 log_debug("%s", __func__);
2432
2433 input_clear(ictx);
2434 input_start_timer(ictx);
2435 ictx->last = -1;
2436}
2437
2438/* Rename terminator (ST) received. */
2439static void
2440input_exit_rename(struct input_ctx *ictx)
2441{
2442 struct window_pane *wp = ictx->wp;
2443 struct window *w;
2444 struct options_entry *o;
2445
2446 if (wp == NULL((void *)0))
2447 return;
2448 if (ictx->flags & INPUT_DISCARD0x1)
2449 return;
2450 if (!options_get_number(ictx->wp->options, "allow-rename"))
2451 return;
2452 log_debug("%s: \"%s\"", __func__, ictx->input_buf);
2453
2454 if (!utf8_isvalid(ictx->input_buf))
2455 return;
2456 w = wp->window;
2457
2458 if (ictx->input_len == 0) {
2459 o = options_get_only(w->options, "automatic-rename");
2460 if (o != NULL((void *)0))
2461 options_remove_or_default(o, -1, NULL((void *)0));
2462 if (!options_get_number(w->options, "automatic-rename"))
2463 window_set_name(w, "");
2464 } else {
2465 options_set_number(w->options, "automatic-rename", 0);
2466 window_set_name(w, ictx->input_buf);
2467 }
2468 server_redraw_window_borders(w);
2469 server_status_window(w);
2470}
2471
2472/* Open UTF-8 character. */
2473static int
2474input_top_bit_set(struct input_ctx *ictx)
2475{
2476 struct screen_write_ctx *sctx = &ictx->ctx;
2477 struct utf8_data *ud = &ictx->utf8data;
2478
2479 ictx->last = -1;
2480
2481 if (!ictx->utf8started) {
2482 if (utf8_open(ud, ictx->ch) != UTF8_MORE)
2483 return (0);
2484 ictx->utf8started = 1;
2485 return (0);
2486 }
2487
2488 switch (utf8_append(ud, ictx->ch)) {
2489 case UTF8_MORE:
2490 return (0);
2491 case UTF8_ERROR:
2492 ictx->utf8started = 0;
2493 return (0);
2494 case UTF8_DONE:
2495 break;
2496 }
2497 ictx->utf8started = 0;
2498
2499 log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2500 (int)ud->size, ud->data, ud->width);
2501
2502 utf8_copy(&ictx->cell.cell.data, ud);
2503 screen_write_collect_add(sctx, &ictx->cell.cell);
2504
2505 return (0);
2506}
2507
2508/* Reply to a colour request. */
2509static void
2510input_osc_colour_reply(struct input_ctx *ictx, u_int n, int c)
2511{
2512 u_char r, g, b;
2513 const char *end;
2514
2515 if (c != -1)
2516 c = colour_force_rgb(c);
2517 if (c == -1)
2518 return;
2519 colour_split_rgb(c, &r, &g, &b);
2520
2521 if (ictx->input_end == INPUT_END_BEL)
2522 end = "\007";
2523 else
2524 end = "\033\\";
2525 input_reply(ictx, "\033]%u;rgb:%02hhx%02hhx/%02hhx%02hhx/%02hhx%02hhx%s",
2526 n, r, r, g, g, b, b, end);
2527}
2528
2529/* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2530static void
2531input_osc_4(struct input_ctx *ictx, const char *p)
2532{
2533 char *copy, *s, *next = NULL((void *)0);
2534 long idx;
2535 int c, bad = 0, redraw = 0;
2536
2537 copy = s = xstrdup(p);
2538 while (s != NULL((void *)0) && *s != '\0') {
2539 idx = strtol(s, &next, 10);
2540 if (*next++ != ';') {
2541 bad = 1;
2542 break;
2543 }
2544 if (idx < 0 || idx >= 256) {
2545 bad = 1;
2546 break;
2547 }
2548
2549 s = strsep(&next, ";");
2550 if (strcmp(s, "?") == 0) {
2551 c = colour_palette_get(ictx->palette, idx);
2552 if (c != -1)
2553 input_osc_colour_reply(ictx, 4, c);
2554 continue;
2555 }
2556 if ((c = colour_parseX11(s)) == -1) {
2557 s = next;
2558 continue;
2559 }
2560 if (colour_palette_set(ictx->palette, idx, c))
2561 redraw = 1;
2562 s = next;
2563 }
2564 if (bad)
2565 log_debug("bad OSC 4: %s", p);
2566 if (redraw)
2567 screen_write_fullredraw(&ictx->ctx);
2568 free(copy);
2569}
2570
2571/* Handle the OSC 8 sequence for embedding hyperlinks. */
2572static void
2573input_osc_8(struct input_ctx *ictx, const char *p)
2574{
2575 struct hyperlinks *hl = ictx->ctx.s->hyperlinks;
2576 struct grid_cell *gc = &ictx->cell.cell;
2577 const char *start, *end, *uri;
2578 char *id = NULL((void *)0);
2579
2580 for (start = p; (end = strpbrk(start, ":;")) != NULL((void *)0); start = end + 1) {
2581 if (end - start >= 4 && strncmp(start, "id=", 3) == 0) {
2582 if (id != NULL((void *)0))
2583 goto bad;
2584 id = xstrndup(start + 3, end - start - 3);
2585 }
2586
2587 /* The first ; is the end of parameters and start of the URI. */
2588 if (*end == ';')
2589 break;
2590 }
2591 if (end == NULL((void *)0) || *end != ';')
2592 goto bad;
2593 uri = end + 1;
2594 if (*uri == '\0') {
2595 gc->link = 0;
2596 free(id);
2597 return;
2598 }
2599 gc->link = hyperlinks_put(hl, uri, id);
2600 if (id == NULL((void *)0))
2601 log_debug("hyperlink (anonymous) %s = %u", uri, gc->link);
2602 else
2603 log_debug("hyperlink (id=%s) %s = %u", id, uri, gc->link);
2604 free(id);
2605 return;
2606
2607bad:
2608 log_debug("bad OSC 8 %s", p);
2609 free(id);
2610}
2611
2612/*
2613 * Get a client with a foreground for the pane. There isn't much to choose
2614 * between them so just use the first.
2615 */
2616static int
2617input_get_fg_client(struct window_pane *wp)
2618{
2619 struct window *w = wp->window;
2620 struct client *loop;
2621
2622 TAILQ_FOREACH(loop, &clients, entry)for((loop) = ((&clients)->tqh_first); (loop) != ((void
*)0); (loop) = ((loop)->entry.tqe_next)) {
2623 if (loop->flags & CLIENT_UNATTACHEDFLAGS(0x200| 0x40| 0x4))
2624 continue;
2625 if (loop->session == NULL((void *)0) || !session_has(loop->session, w))
2626 continue;
2627 if (loop->tty.fg == -1)
2628 continue;
2629 return (loop->tty.fg);
2630 }
2631 return (-1);
2632}
2633
2634/* Get a client with a background for the pane. */
2635static int
2636input_get_bg_client(struct window_pane *wp)
2637{
2638 struct window *w = wp->window;
2639 struct client *loop;
2640
2641 TAILQ_FOREACH(loop, &clients, entry)for((loop) = ((&clients)->tqh_first); (loop) != ((void
*)0); (loop) = ((loop)->entry.tqe_next)) {
2642 if (loop->flags & CLIENT_UNATTACHEDFLAGS(0x200| 0x40| 0x4))
2643 continue;
2644 if (loop->session == NULL((void *)0) || !session_has(loop->session, w))
2645 continue;
2646 if (loop->tty.bg == -1)
2647 continue;
2648 return (loop->tty.bg);
2649 }
2650 return (-1);
2651}
2652
2653/* Handle the OSC 10 sequence for setting and querying foreground colour. */
2654static void
2655input_osc_10(struct input_ctx *ictx, const char *p)
2656{
2657 struct window_pane *wp = ictx->wp;
2658 struct grid_cell defaults;
2659 int c;
2660
2661 if (strcmp(p, "?") == 0) {
2662 if (wp == NULL((void *)0))
2663 return;
2664 tty_default_colours(&defaults, wp);
2665 if (COLOUR_DEFAULT(defaults.fg)((defaults.fg) == 8 || (defaults.fg) == 9))
2666 c = input_get_fg_client(wp);
2667 else
2668 c = defaults.fg;
2669 input_osc_colour_reply(ictx, 10, c);
2670 return;
2671 }
2672
2673 if ((c = colour_parseX11(p)) == -1) {
2674 log_debug("bad OSC 10: %s", p);
2675 return;
2676 }
2677 if (ictx->palette != NULL((void *)0)) {
2678 ictx->palette->fg = c;
2679 if (wp != NULL((void *)0))
2680 wp->flags |= PANE_STYLECHANGED0x1000;
2681 screen_write_fullredraw(&ictx->ctx);
2682 }
2683}
2684
2685/* Handle the OSC 110 sequence for resetting foreground colour. */
2686static void
2687input_osc_110(struct input_ctx *ictx, const char *p)
2688{
2689 struct window_pane *wp = ictx->wp;
2690
2691 if (*p != '\0')
2692 return;
2693 if (ictx->palette != NULL((void *)0)) {
2694 ictx->palette->fg = 8;
2695 if (wp != NULL((void *)0))
2696 wp->flags |= PANE_STYLECHANGED0x1000;
2697 screen_write_fullredraw(&ictx->ctx);
2698 }
2699}
2700
2701/* Handle the OSC 11 sequence for setting and querying background colour. */
2702static void
2703input_osc_11(struct input_ctx *ictx, const char *p)
2704{
2705 struct window_pane *wp = ictx->wp;
2706 struct grid_cell defaults;
2707 int c;
2708
2709 if (strcmp(p, "?") == 0) {
2710 if (wp == NULL((void *)0))
2711 return;
2712 tty_default_colours(&defaults, wp);
2713 if (COLOUR_DEFAULT(defaults.bg)((defaults.bg) == 8 || (defaults.bg) == 9))
2714 c = input_get_bg_client(wp);
2715 else
2716 c = defaults.bg;
2717 input_osc_colour_reply(ictx, 11, c);
2718 return;
2719 }
2720
2721 if ((c = colour_parseX11(p)) == -1) {
2722 log_debug("bad OSC 11: %s", p);
2723 return;
2724 }
2725 if (ictx->palette != NULL((void *)0)) {
2726 ictx->palette->bg = c;
2727 if (wp != NULL((void *)0))
2728 wp->flags |= PANE_STYLECHANGED0x1000;
2729 screen_write_fullredraw(&ictx->ctx);
2730 }
2731}
2732
2733/* Handle the OSC 111 sequence for resetting background colour. */
2734static void
2735input_osc_111(struct input_ctx *ictx, const char *p)
2736{
2737 struct window_pane *wp = ictx->wp;
2738
2739 if (*p != '\0')
2740 return;
2741 if (ictx->palette != NULL((void *)0)) {
2742 ictx->palette->bg = 8;
2743 if (wp != NULL((void *)0))
2744 wp->flags |= PANE_STYLECHANGED0x1000;
2745 screen_write_fullredraw(&ictx->ctx);
2746 }
2747}
2748
2749/* Handle the OSC 12 sequence for setting and querying cursor colour. */
2750static void
2751input_osc_12(struct input_ctx *ictx, const char *p)
2752{
2753 struct window_pane *wp = ictx->wp;
2754 int c;
2755
2756 if (strcmp(p, "?") == 0) {
2757 if (wp != NULL((void *)0)) {
2758 c = ictx->ctx.s->ccolour;
2759 if (c == -1)
2760 c = ictx->ctx.s->default_ccolour;
2761 input_osc_colour_reply(ictx, 12, c);
2762 }
2763 return;
2764 }
2765
2766 if ((c = colour_parseX11(p)) == -1) {
2767 log_debug("bad OSC 12: %s", p);
2768 return;
2769 }
2770 screen_set_cursor_colour(ictx->ctx.s, c);
2771}
2772
2773/* Handle the OSC 112 sequence for resetting cursor colour. */
2774static void
2775input_osc_112(struct input_ctx *ictx, const char *p)
2776{
2777 if (*p == '\0') /* no arguments allowed */
2778 screen_set_cursor_colour(ictx->ctx.s, -1);
2779}
2780
2781/* Handle the OSC 133 sequence. */
2782static void
2783input_osc_133(struct input_ctx *ictx, const char *p)
2784{
2785 struct grid *gd = ictx->ctx.s->grid;
2786 u_int line = ictx->ctx.s->cy + gd->hsize;
2787 struct grid_line *gl;
2788
2789 if (line > gd->hsize + gd->sy - 1)
2790 return;
2791 gl = grid_get_line(gd, line);
2792
2793 switch (*p) {
2794 case 'A':
2795 gl->flags |= GRID_LINE_START_PROMPT0x8;
2796 break;
2797 case 'C':
2798 gl->flags |= GRID_LINE_START_OUTPUT0x10;
2799 break;
2800 }
2801}
2802
2803/* Handle the OSC 52 sequence for setting the clipboard. */
2804static void
2805input_osc_52(struct input_ctx *ictx, const char *p)
2806{
2807 struct window_pane *wp = ictx->wp;
2808 char *end;
2809 const char *buf = NULL((void *)0);
2810 size_t len = 0;
2811 u_char *out;
2812 int outlen, state;
2813 struct screen_write_ctx ctx;
2814 struct paste_buffer *pb;
2815 const char* allow = "cpqs01234567";
2816 char flags[sizeof "cpqs01234567"] = "";
2817 u_int i, j = 0;
2818
2819 if (wp == NULL((void *)0))
2820 return;
2821 state = options_get_number(global_options, "set-clipboard");
2822 if (state != 2)
2823 return;
2824
2825 if ((end = strchr(p, ';')) == NULL((void *)0))
2826 return;
2827 end++;
2828 if (*end == '\0')
2829 return;
2830 log_debug("%s: %s", __func__, end);
2831
2832 for (i = 0; p + i != end; i++) {
2833 if (strchr(allow, p[i]) != NULL((void *)0) && strchr(flags, p[i]) == NULL((void *)0))
2834 flags[j++] = p[i];
2835 }
2836 log_debug("%s: %.*s %s", __func__, (int)(end - p - 1), p, flags);
2837
2838 if (strcmp(end, "?") == 0) {
2839 if ((pb = paste_get_top(NULL((void *)0))) != NULL((void *)0))
2840 buf = paste_buffer_data(pb, &len);
2841 if (ictx->input_end == INPUT_END_BEL)
2842 input_reply_clipboard(ictx->event, buf, len, "\007");
2843 else
2844 input_reply_clipboard(ictx->event, buf, len, "\033\\");
2845 return;
2846 }
2847
2848 len = (strlen(end) / 4) * 3;
2849 if (len == 0)
2850 return;
2851
2852 out = xmalloc(len);
2853 if ((outlen = b64_pton__b64_pton(end, out, len)) == -1) {
2854 free(out);
2855 return;
2856 }
2857
2858 screen_write_start_pane(&ctx, wp, NULL((void *)0));
2859 screen_write_setselection(&ctx, flags, out, outlen);
2860 screen_write_stop(&ctx);
2861 notify_pane("pane-set-clipboard", wp);
2862
2863 paste_add(NULL((void *)0), out, outlen);
2864}
2865
2866/* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2867static void
2868input_osc_104(struct input_ctx *ictx, const char *p)
2869{
2870 char *copy, *s;
2871 long idx;
2872 int bad = 0, redraw = 0;
2873
2874 if (*p == '\0') {
2875 colour_palette_clear(ictx->palette);
2876 screen_write_fullredraw(&ictx->ctx);
2877 return;
2878 }
2879
2880 copy = s = xstrdup(p);
2881 while (*s != '\0') {
2882 idx = strtol(s, &s, 10);
2883 if (*s != '\0' && *s != ';') {
2884 bad = 1;
2885 break;
2886 }
2887 if (idx < 0 || idx >= 256) {
2888 bad = 1;
2889 break;
2890 }
2891 if (colour_palette_set(ictx->palette, idx, -1))
2892 redraw = 1;
2893 if (*s == ';')
2894 s++;
2895 }
2896 if (bad)
2897 log_debug("bad OSC 104: %s", p);
2898 if (redraw)
2899 screen_write_fullredraw(&ictx->ctx);
2900 free(copy);
2901}
2902
2903void
2904input_reply_clipboard(struct bufferevent *bev, const char *buf, size_t len,
2905 const char *end)
2906{
2907 char *out = NULL((void *)0);
2908 int outlen = 0;
2909
2910 if (buf != NULL((void *)0) && len != 0) {
2911 if (len >= ((size_t)INT_MAX0x7fffffff * 3 / 4) - 1)
2912 return;
2913 outlen = 4 * ((len + 2) / 3) + 1;
2914 out = xmalloc(outlen);
2915 if ((outlen = b64_ntop__b64_ntop(buf, len, out, outlen)) == -1) {
2916 free(out);
2917 return;
2918 }
2919 }
2920
2921 bufferevent_write(bev, "\033]52;;", 6);
2922 if (outlen != 0)
2923 bufferevent_write(bev, out, outlen);
2924 bufferevent_write(bev, end, strlen(end));
2925 free(out);
2926}