1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <netinet/in.h>
22:
23: #include <resolv.h>
24: #include <stdlib.h>
25: #include <string.h>
26: #include <time.h>
27:
28: #include "tmux.h"
29:
30: /*
31: * Based on the description by Paul Williams at:
32: *
33: * http://vt100.net/emu/dec_ansi_parser
34: *
35: * With the following changes:
36: *
37: * - 7-bit only.
38: *
39: * - Support for UTF-8.
40: *
41: * - OSC (but not APC) may be terminated by \007 as well as ST.
42: *
43: * - A state for APC similar to OSC. Some terminals appear to use this to set
44: * the title.
45: *
46: * - A state for the screen \033k...\033\\ sequence to rename a window. This is
47: * pretty stupid but not supporting it is more trouble than it is worth.
48: *
49: * - Special handling for ESC inside a DCS to allow arbitrary byte sequences to
50: * be passed to the underlying terminals.
51: */
52:
53: /* Input parser cell. */
54: struct input_cell {
55: struct grid_cell cell;
56: int set;
57: int g0set; /* 1 if ACS */
58: int g1set; /* 1 if ACS */
59: };
60:
61: /* Input parser context. */
62: struct input_ctx {
63: struct window_pane *wp;
64: struct screen_write_ctx ctx;
65:
66: struct input_cell cell;
67:
68: struct input_cell old_cell;
69: u_int old_cx;
70: u_int old_cy;
71:
72: u_char interm_buf[4];
73: size_t interm_len;
74:
75: u_char param_buf[64];
76: size_t param_len;
77:
78: #define INPUT_BUF_START 32
79: #define INPUT_BUF_LIMIT 1048576
80: u_char *input_buf;
81: size_t input_len;
82: size_t input_space;
83:
84: int param_list[24]; /* -1 not present */
85: u_int param_list_len;
86:
87: struct utf8_data utf8data;
88:
89: int ch;
90:
91: int flags;
92: #define INPUT_DISCARD 0x1
93:
94: const struct input_state *state;
95:
96: /*
97: * All input received since we were last in the ground state. Sent to
98: * control clients on connection.
99: */
100: struct evbuffer *since_ground;
101: };
102:
103: /* Helper functions. */
104: struct input_transition;
105: static int input_split(struct input_ctx *);
106: static int input_get(struct input_ctx *, u_int, int, int);
107: static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...);
108: static void input_set_state(struct window_pane *,
109: const struct input_transition *);
110: static void input_reset_cell(struct input_ctx *);
111:
112: static void input_osc_4(struct window_pane *, const char *);
113: static void input_osc_52(struct window_pane *, const char *);
114: static void input_osc_104(struct window_pane *, const char *);
115:
116: /* Transition entry/exit handlers. */
117: static void input_clear(struct input_ctx *);
118: static void input_ground(struct input_ctx *);
119: static void input_enter_osc(struct input_ctx *);
120: static void input_exit_osc(struct input_ctx *);
121: static void input_enter_apc(struct input_ctx *);
122: static void input_exit_apc(struct input_ctx *);
123: static void input_enter_rename(struct input_ctx *);
124: static void input_exit_rename(struct input_ctx *);
125:
126: /* Input state handlers. */
127: static int input_print(struct input_ctx *);
128: static int input_intermediate(struct input_ctx *);
129: static int input_parameter(struct input_ctx *);
130: static int input_input(struct input_ctx *);
131: static int input_c0_dispatch(struct input_ctx *);
132: static int input_esc_dispatch(struct input_ctx *);
133: static int input_csi_dispatch(struct input_ctx *);
134: static void input_csi_dispatch_rm(struct input_ctx *);
135: static void input_csi_dispatch_rm_private(struct input_ctx *);
136: static void input_csi_dispatch_sm(struct input_ctx *);
137: static void input_csi_dispatch_sm_private(struct input_ctx *);
138: static void input_csi_dispatch_winops(struct input_ctx *);
139: static void input_csi_dispatch_sgr_256(struct input_ctx *, int, u_int *);
140: static void input_csi_dispatch_sgr_rgb(struct input_ctx *, int, u_int *);
141: static void input_csi_dispatch_sgr(struct input_ctx *);
142: static int input_dcs_dispatch(struct input_ctx *);
143: static int input_utf8_open(struct input_ctx *);
144: static int input_utf8_add(struct input_ctx *);
145: static int input_utf8_close(struct input_ctx *);
146:
147: /* Command table comparison function. */
148: static int input_table_compare(const void *, const void *);
149:
150: /* Command table entry. */
151: struct input_table_entry {
152: int ch;
153: const char *interm;
154: int type;
155: };
156:
157: /* Escape commands. */
158: enum input_esc_type {
159: INPUT_ESC_DECALN,
160: INPUT_ESC_DECKPAM,
161: INPUT_ESC_DECKPNM,
162: INPUT_ESC_DECRC,
163: INPUT_ESC_DECSC,
164: INPUT_ESC_HTS,
165: INPUT_ESC_IND,
166: INPUT_ESC_NEL,
167: INPUT_ESC_RI,
168: INPUT_ESC_RIS,
169: INPUT_ESC_SCSG0_OFF,
170: INPUT_ESC_SCSG0_ON,
171: INPUT_ESC_SCSG1_OFF,
172: INPUT_ESC_SCSG1_ON,
173: INPUT_ESC_ST,
174: };
175:
176: /* Escape command table. */
177: static const struct input_table_entry input_esc_table[] = {
178: { '0', "(", INPUT_ESC_SCSG0_ON },
179: { '0', ")", INPUT_ESC_SCSG1_ON },
180: { '7', "", INPUT_ESC_DECSC },
181: { '8', "", INPUT_ESC_DECRC },
182: { '8', "#", INPUT_ESC_DECALN },
183: { '=', "", INPUT_ESC_DECKPAM },
184: { '>', "", INPUT_ESC_DECKPNM },
185: { 'B', "(", INPUT_ESC_SCSG0_OFF },
186: { 'B', ")", INPUT_ESC_SCSG1_OFF },
187: { 'D', "", INPUT_ESC_IND },
188: { 'E', "", INPUT_ESC_NEL },
189: { 'H', "", INPUT_ESC_HTS },
190: { 'M', "", INPUT_ESC_RI },
191: { '\\', "", INPUT_ESC_ST },
192: { 'c', "", INPUT_ESC_RIS },
193: };
194:
195: /* Control (CSI) commands. */
196: enum input_csi_type {
197: INPUT_CSI_CBT,
198: INPUT_CSI_CNL,
199: INPUT_CSI_CPL,
200: INPUT_CSI_CUB,
201: INPUT_CSI_CUD,
202: INPUT_CSI_CUF,
203: INPUT_CSI_CUP,
204: INPUT_CSI_CUU,
205: INPUT_CSI_DA,
206: INPUT_CSI_DA_TWO,
207: INPUT_CSI_DCH,
208: INPUT_CSI_DECSCUSR,
209: INPUT_CSI_DECSTBM,
210: INPUT_CSI_DL,
211: INPUT_CSI_DSR,
212: INPUT_CSI_ECH,
213: INPUT_CSI_ED,
214: INPUT_CSI_EL,
215: INPUT_CSI_HPA,
216: INPUT_CSI_ICH,
217: INPUT_CSI_IL,
218: INPUT_CSI_RCP,
219: INPUT_CSI_RM,
220: INPUT_CSI_RM_PRIVATE,
221: INPUT_CSI_SCP,
222: INPUT_CSI_SGR,
223: INPUT_CSI_SM,
224: INPUT_CSI_SM_PRIVATE,
225: INPUT_CSI_SU,
226: INPUT_CSI_TBC,
227: INPUT_CSI_VPA,
228: INPUT_CSI_WINOPS,
229: };
230:
231: /* Control (CSI) command table. */
232: static const struct input_table_entry input_csi_table[] = {
233: { '@', "", INPUT_CSI_ICH },
234: { 'A', "", INPUT_CSI_CUU },
235: { 'B', "", INPUT_CSI_CUD },
236: { 'C', "", INPUT_CSI_CUF },
237: { 'D', "", INPUT_CSI_CUB },
238: { 'E', "", INPUT_CSI_CNL },
239: { 'F', "", INPUT_CSI_CPL },
240: { 'G', "", INPUT_CSI_HPA },
241: { 'H', "", INPUT_CSI_CUP },
242: { 'J', "", INPUT_CSI_ED },
243: { 'K', "", INPUT_CSI_EL },
244: { 'L', "", INPUT_CSI_IL },
245: { 'M', "", INPUT_CSI_DL },
246: { 'P', "", INPUT_CSI_DCH },
247: { 'S', "", INPUT_CSI_SU },
248: { 'X', "", INPUT_CSI_ECH },
249: { 'Z', "", INPUT_CSI_CBT },
250: { 'c', "", INPUT_CSI_DA },
251: { 'c', ">", INPUT_CSI_DA_TWO },
252: { 'd', "", INPUT_CSI_VPA },
253: { 'f', "", INPUT_CSI_CUP },
254: { 'g', "", INPUT_CSI_TBC },
255: { 'h', "", INPUT_CSI_SM },
256: { 'h', "?", INPUT_CSI_SM_PRIVATE },
257: { 'l', "", INPUT_CSI_RM },
258: { 'l', "?", INPUT_CSI_RM_PRIVATE },
259: { 'm', "", INPUT_CSI_SGR },
260: { 'n', "", INPUT_CSI_DSR },
261: { 'q', " ", INPUT_CSI_DECSCUSR },
262: { 'r', "", INPUT_CSI_DECSTBM },
263: { 's', "", INPUT_CSI_SCP },
264: { 't', "", INPUT_CSI_WINOPS },
265: { 'u', "", INPUT_CSI_RCP },
266: };
267:
268: /* Input transition. */
269: struct input_transition {
270: int first;
271: int last;
272:
273: int (*handler)(struct input_ctx *);
274: const struct input_state *state;
275: };
276:
277: /* Input state. */
278: struct input_state {
279: const char *name;
280: void (*enter)(struct input_ctx *);
281: void (*exit)(struct input_ctx *);
282: const struct input_transition *transitions;
283: };
284:
285: /* State transitions available from all states. */
286: #define INPUT_STATE_ANYWHERE \
287: { 0x18, 0x18, input_c0_dispatch, &input_state_ground }, \
288: { 0x1a, 0x1a, input_c0_dispatch, &input_state_ground }, \
289: { 0x1b, 0x1b, NULL, &input_state_esc_enter }
290:
291: /* Forward declarations of state tables. */
292: static const struct input_transition input_state_ground_table[];
293: static const struct input_transition input_state_esc_enter_table[];
294: static const struct input_transition input_state_esc_intermediate_table[];
295: static const struct input_transition input_state_csi_enter_table[];
296: static const struct input_transition input_state_csi_parameter_table[];
297: static const struct input_transition input_state_csi_intermediate_table[];
298: static const struct input_transition input_state_csi_ignore_table[];
299: static const struct input_transition input_state_dcs_enter_table[];
300: static const struct input_transition input_state_dcs_parameter_table[];
301: static const struct input_transition input_state_dcs_intermediate_table[];
302: static const struct input_transition input_state_dcs_handler_table[];
303: static const struct input_transition input_state_dcs_escape_table[];
304: static const struct input_transition input_state_dcs_ignore_table[];
305: static const struct input_transition input_state_osc_string_table[];
306: static const struct input_transition input_state_apc_string_table[];
307: static const struct input_transition input_state_rename_string_table[];
308: static const struct input_transition input_state_consume_st_table[];
309: static const struct input_transition input_state_utf8_three_table[];
310: static const struct input_transition input_state_utf8_two_table[];
311: static const struct input_transition input_state_utf8_one_table[];
312:
313: /* ground state definition. */
314: static const struct input_state input_state_ground = {
315: "ground",
316: input_ground, NULL,
317: input_state_ground_table
318: };
319:
320: /* esc_enter state definition. */
321: static const struct input_state input_state_esc_enter = {
322: "esc_enter",
323: input_clear, NULL,
324: input_state_esc_enter_table
325: };
326:
327: /* esc_intermediate state definition. */
328: static const struct input_state input_state_esc_intermediate = {
329: "esc_intermediate",
330: NULL, NULL,
331: input_state_esc_intermediate_table
332: };
333:
334: /* csi_enter state definition. */
335: static const struct input_state input_state_csi_enter = {
336: "csi_enter",
337: input_clear, NULL,
338: input_state_csi_enter_table
339: };
340:
341: /* csi_parameter state definition. */
342: static const struct input_state input_state_csi_parameter = {
343: "csi_parameter",
344: NULL, NULL,
345: input_state_csi_parameter_table
346: };
347:
348: /* csi_intermediate state definition. */
349: static const struct input_state input_state_csi_intermediate = {
350: "csi_intermediate",
351: NULL, NULL,
352: input_state_csi_intermediate_table
353: };
354:
355: /* csi_ignore state definition. */
356: static const struct input_state input_state_csi_ignore = {
357: "csi_ignore",
358: NULL, NULL,
359: input_state_csi_ignore_table
360: };
361:
362: /* dcs_enter state definition. */
363: static const struct input_state input_state_dcs_enter = {
364: "dcs_enter",
365: input_clear, NULL,
366: input_state_dcs_enter_table
367: };
368:
369: /* dcs_parameter state definition. */
370: static const struct input_state input_state_dcs_parameter = {
371: "dcs_parameter",
372: NULL, NULL,
373: input_state_dcs_parameter_table
374: };
375:
376: /* dcs_intermediate state definition. */
377: static const struct input_state input_state_dcs_intermediate = {
378: "dcs_intermediate",
379: NULL, NULL,
380: input_state_dcs_intermediate_table
381: };
382:
383: /* dcs_handler state definition. */
384: static const struct input_state input_state_dcs_handler = {
385: "dcs_handler",
386: NULL, NULL,
387: input_state_dcs_handler_table
388: };
389:
390: /* dcs_escape state definition. */
391: static const struct input_state input_state_dcs_escape = {
392: "dcs_escape",
393: NULL, NULL,
394: input_state_dcs_escape_table
395: };
396:
397: /* dcs_ignore state definition. */
398: static const struct input_state input_state_dcs_ignore = {
399: "dcs_ignore",
400: NULL, NULL,
401: input_state_dcs_ignore_table
402: };
403:
404: /* osc_string state definition. */
405: static const struct input_state input_state_osc_string = {
406: "osc_string",
407: input_enter_osc, input_exit_osc,
408: input_state_osc_string_table
409: };
410:
411: /* apc_string state definition. */
412: static const struct input_state input_state_apc_string = {
413: "apc_string",
414: input_enter_apc, input_exit_apc,
415: input_state_apc_string_table
416: };
417:
418: /* rename_string state definition. */
419: static const struct input_state input_state_rename_string = {
420: "rename_string",
421: input_enter_rename, input_exit_rename,
422: input_state_rename_string_table
423: };
424:
425: /* consume_st state definition. */
426: static const struct input_state input_state_consume_st = {
427: "consume_st",
428: NULL, NULL,
429: input_state_consume_st_table
430: };
431:
432: /* utf8_three state definition. */
433: static const struct input_state input_state_utf8_three = {
434: "utf8_three",
435: NULL, NULL,
436: input_state_utf8_three_table
437: };
438:
439: /* utf8_two state definition. */
440: static const struct input_state input_state_utf8_two = {
441: "utf8_two",
442: NULL, NULL,
443: input_state_utf8_two_table
444: };
445:
446: /* utf8_one state definition. */
447: static const struct input_state input_state_utf8_one = {
448: "utf8_one",
449: NULL, NULL,
450: input_state_utf8_one_table
451: };
452:
453: /* ground state table. */
454: static const struct input_transition input_state_ground_table[] = {
455: INPUT_STATE_ANYWHERE,
456:
457: { 0x00, 0x17, input_c0_dispatch, NULL },
458: { 0x19, 0x19, input_c0_dispatch, NULL },
459: { 0x1c, 0x1f, input_c0_dispatch, NULL },
460: { 0x20, 0x7e, input_print, NULL },
461: { 0x7f, 0x7f, NULL, NULL },
462: { 0x80, 0xc1, NULL, NULL },
463: { 0xc2, 0xdf, input_utf8_open, &input_state_utf8_one },
464: { 0xe0, 0xef, input_utf8_open, &input_state_utf8_two },
465: { 0xf0, 0xf4, input_utf8_open, &input_state_utf8_three },
466: { 0xf5, 0xff, NULL, NULL },
467:
468: { -1, -1, NULL, NULL }
469: };
470:
471: /* esc_enter state table. */
472: static const struct input_transition input_state_esc_enter_table[] = {
473: INPUT_STATE_ANYWHERE,
474:
475: { 0x00, 0x17, input_c0_dispatch, NULL },
476: { 0x19, 0x19, input_c0_dispatch, NULL },
477: { 0x1c, 0x1f, input_c0_dispatch, NULL },
478: { 0x20, 0x2f, input_intermediate, &input_state_esc_intermediate },
479: { 0x30, 0x4f, input_esc_dispatch, &input_state_ground },
480: { 0x50, 0x50, NULL, &input_state_dcs_enter },
481: { 0x51, 0x57, input_esc_dispatch, &input_state_ground },
482: { 0x58, 0x58, NULL, &input_state_consume_st },
483: { 0x59, 0x59, input_esc_dispatch, &input_state_ground },
484: { 0x5a, 0x5a, input_esc_dispatch, &input_state_ground },
485: { 0x5b, 0x5b, NULL, &input_state_csi_enter },
486: { 0x5c, 0x5c, input_esc_dispatch, &input_state_ground },
487: { 0x5d, 0x5d, NULL, &input_state_osc_string },
488: { 0x5e, 0x5e, NULL, &input_state_consume_st },
489: { 0x5f, 0x5f, NULL, &input_state_apc_string },
490: { 0x60, 0x6a, input_esc_dispatch, &input_state_ground },
491: { 0x6b, 0x6b, NULL, &input_state_rename_string },
492: { 0x6c, 0x7e, input_esc_dispatch, &input_state_ground },
493: { 0x7f, 0xff, NULL, NULL },
494:
495: { -1, -1, NULL, NULL }
496: };
497:
498: /* esc_interm state table. */
499: static const struct input_transition input_state_esc_intermediate_table[] = {
500: INPUT_STATE_ANYWHERE,
501:
502: { 0x00, 0x17, input_c0_dispatch, NULL },
503: { 0x19, 0x19, input_c0_dispatch, NULL },
504: { 0x1c, 0x1f, input_c0_dispatch, NULL },
505: { 0x20, 0x2f, input_intermediate, NULL },
506: { 0x30, 0x7e, input_esc_dispatch, &input_state_ground },
507: { 0x7f, 0xff, NULL, NULL },
508:
509: { -1, -1, NULL, NULL }
510: };
511:
512: /* csi_enter state table. */
513: static const struct input_transition input_state_csi_enter_table[] = {
514: INPUT_STATE_ANYWHERE,
515:
516: { 0x00, 0x17, input_c0_dispatch, NULL },
517: { 0x19, 0x19, input_c0_dispatch, NULL },
518: { 0x1c, 0x1f, input_c0_dispatch, NULL },
519: { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
520: { 0x30, 0x39, input_parameter, &input_state_csi_parameter },
521: { 0x3a, 0x3a, NULL, &input_state_csi_ignore },
522: { 0x3b, 0x3b, input_parameter, &input_state_csi_parameter },
523: { 0x3c, 0x3f, input_intermediate, &input_state_csi_parameter },
524: { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
525: { 0x7f, 0xff, NULL, NULL },
526:
527: { -1, -1, NULL, NULL }
528: };
529:
530: /* csi_parameter state table. */
531: static const struct input_transition input_state_csi_parameter_table[] = {
532: INPUT_STATE_ANYWHERE,
533:
534: { 0x00, 0x17, input_c0_dispatch, NULL },
535: { 0x19, 0x19, input_c0_dispatch, NULL },
536: { 0x1c, 0x1f, input_c0_dispatch, NULL },
537: { 0x20, 0x2f, input_intermediate, &input_state_csi_intermediate },
538: { 0x30, 0x39, input_parameter, NULL },
539: { 0x3a, 0x3a, NULL, &input_state_csi_ignore },
540: { 0x3b, 0x3b, input_parameter, NULL },
541: { 0x3c, 0x3f, NULL, &input_state_csi_ignore },
542: { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
543: { 0x7f, 0xff, NULL, NULL },
544:
545: { -1, -1, NULL, NULL }
546: };
547:
548: /* csi_intermediate state table. */
549: static const struct input_transition input_state_csi_intermediate_table[] = {
550: INPUT_STATE_ANYWHERE,
551:
552: { 0x00, 0x17, input_c0_dispatch, NULL },
553: { 0x19, 0x19, input_c0_dispatch, NULL },
554: { 0x1c, 0x1f, input_c0_dispatch, NULL },
555: { 0x20, 0x2f, input_intermediate, NULL },
556: { 0x30, 0x3f, NULL, &input_state_csi_ignore },
557: { 0x40, 0x7e, input_csi_dispatch, &input_state_ground },
558: { 0x7f, 0xff, NULL, NULL },
559:
560: { -1, -1, NULL, NULL }
561: };
562:
563: /* csi_ignore state table. */
564: static const struct input_transition input_state_csi_ignore_table[] = {
565: INPUT_STATE_ANYWHERE,
566:
567: { 0x00, 0x17, input_c0_dispatch, NULL },
568: { 0x19, 0x19, input_c0_dispatch, NULL },
569: { 0x1c, 0x1f, input_c0_dispatch, NULL },
570: { 0x20, 0x3f, NULL, NULL },
571: { 0x40, 0x7e, NULL, &input_state_ground },
572: { 0x7f, 0xff, NULL, NULL },
573:
574: { -1, -1, NULL, NULL }
575: };
576:
577: /* dcs_enter state table. */
578: static const struct input_transition input_state_dcs_enter_table[] = {
579: INPUT_STATE_ANYWHERE,
580:
581: { 0x00, 0x17, NULL, NULL },
582: { 0x19, 0x19, NULL, NULL },
583: { 0x1c, 0x1f, NULL, NULL },
584: { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
585: { 0x30, 0x39, input_parameter, &input_state_dcs_parameter },
586: { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
587: { 0x3b, 0x3b, input_parameter, &input_state_dcs_parameter },
588: { 0x3c, 0x3f, input_intermediate, &input_state_dcs_parameter },
589: { 0x40, 0x7e, input_input, &input_state_dcs_handler },
590: { 0x7f, 0xff, NULL, NULL },
591:
592: { -1, -1, NULL, NULL }
593: };
594:
595: /* dcs_parameter state table. */
596: static const struct input_transition input_state_dcs_parameter_table[] = {
597: INPUT_STATE_ANYWHERE,
598:
599: { 0x00, 0x17, NULL, NULL },
600: { 0x19, 0x19, NULL, NULL },
601: { 0x1c, 0x1f, NULL, NULL },
602: { 0x20, 0x2f, input_intermediate, &input_state_dcs_intermediate },
603: { 0x30, 0x39, input_parameter, NULL },
604: { 0x3a, 0x3a, NULL, &input_state_dcs_ignore },
605: { 0x3b, 0x3b, input_parameter, NULL },
606: { 0x3c, 0x3f, NULL, &input_state_dcs_ignore },
607: { 0x40, 0x7e, input_input, &input_state_dcs_handler },
608: { 0x7f, 0xff, NULL, NULL },
609:
610: { -1, -1, NULL, NULL }
611: };
612:
613: /* dcs_interm state table. */
614: static const struct input_transition input_state_dcs_intermediate_table[] = {
615: INPUT_STATE_ANYWHERE,
616:
617: { 0x00, 0x17, NULL, NULL },
618: { 0x19, 0x19, NULL, NULL },
619: { 0x1c, 0x1f, NULL, NULL },
620: { 0x20, 0x2f, input_intermediate, NULL },
621: { 0x30, 0x3f, NULL, &input_state_dcs_ignore },
622: { 0x40, 0x7e, input_input, &input_state_dcs_handler },
623: { 0x7f, 0xff, NULL, NULL },
624:
625: { -1, -1, NULL, NULL }
626: };
627:
628: /* dcs_handler state table. */
629: static const struct input_transition input_state_dcs_handler_table[] = {
630: /* No INPUT_STATE_ANYWHERE */
631:
632: { 0x00, 0x1a, input_input, NULL },
633: { 0x1b, 0x1b, NULL, &input_state_dcs_escape },
634: { 0x1c, 0xff, input_input, NULL },
635:
636: { -1, -1, NULL, NULL }
637: };
638:
639: /* dcs_escape state table. */
640: static const struct input_transition input_state_dcs_escape_table[] = {
641: /* No INPUT_STATE_ANYWHERE */
642:
643: { 0x00, 0x5b, input_input, &input_state_dcs_handler },
644: { 0x5c, 0x5c, input_dcs_dispatch, &input_state_ground },
645: { 0x5d, 0xff, input_input, &input_state_dcs_handler },
646:
647: { -1, -1, NULL, NULL }
648: };
649:
650: /* dcs_ignore state table. */
651: static const struct input_transition input_state_dcs_ignore_table[] = {
652: INPUT_STATE_ANYWHERE,
653:
654: { 0x00, 0x17, NULL, NULL },
655: { 0x19, 0x19, NULL, NULL },
656: { 0x1c, 0x1f, NULL, NULL },
657: { 0x20, 0xff, NULL, NULL },
658:
659: { -1, -1, NULL, NULL }
660: };
661:
662: /* osc_string state table. */
663: static const struct input_transition input_state_osc_string_table[] = {
664: INPUT_STATE_ANYWHERE,
665:
666: { 0x00, 0x06, NULL, NULL },
667: { 0x07, 0x07, NULL, &input_state_ground },
668: { 0x08, 0x17, NULL, NULL },
669: { 0x19, 0x19, NULL, NULL },
670: { 0x1c, 0x1f, NULL, NULL },
671: { 0x20, 0xff, input_input, NULL },
672:
673: { -1, -1, NULL, NULL }
674: };
675:
676: /* apc_string state table. */
677: static const struct input_transition input_state_apc_string_table[] = {
678: INPUT_STATE_ANYWHERE,
679:
680: { 0x00, 0x17, NULL, NULL },
681: { 0x19, 0x19, NULL, NULL },
682: { 0x1c, 0x1f, NULL, NULL },
683: { 0x20, 0xff, input_input, NULL },
684:
685: { -1, -1, NULL, NULL }
686: };
687:
688: /* rename_string state table. */
689: static const struct input_transition input_state_rename_string_table[] = {
690: INPUT_STATE_ANYWHERE,
691:
692: { 0x00, 0x17, NULL, NULL },
693: { 0x19, 0x19, NULL, NULL },
694: { 0x1c, 0x1f, NULL, NULL },
695: { 0x20, 0xff, input_input, NULL },
696:
697: { -1, -1, NULL, NULL }
698: };
699:
700: /* consume_st state table. */
701: static const struct input_transition input_state_consume_st_table[] = {
702: INPUT_STATE_ANYWHERE,
703:
704: { 0x00, 0x17, NULL, NULL },
705: { 0x19, 0x19, NULL, NULL },
706: { 0x1c, 0x1f, NULL, NULL },
707: { 0x20, 0xff, NULL, NULL },
708:
709: { -1, -1, NULL, NULL }
710: };
711:
712: /* utf8_three state table. */
713: static const struct input_transition input_state_utf8_three_table[] = {
714: /* No INPUT_STATE_ANYWHERE */
715:
716: { 0x00, 0x7f, NULL, &input_state_ground },
717: { 0x80, 0xbf, input_utf8_add, &input_state_utf8_two },
718: { 0xc0, 0xff, NULL, &input_state_ground },
719:
720: { -1, -1, NULL, NULL }
721: };
722:
723: /* utf8_two state table. */
724: static const struct input_transition input_state_utf8_two_table[] = {
725: /* No INPUT_STATE_ANYWHERE */
726:
727: { 0x00, 0x7f, NULL, &input_state_ground },
728: { 0x80, 0xbf, input_utf8_add, &input_state_utf8_one },
729: { 0xc0, 0xff, NULL, &input_state_ground },
730:
731: { -1, -1, NULL, NULL }
732: };
733:
734: /* utf8_one state table. */
735: static const struct input_transition input_state_utf8_one_table[] = {
736: /* No INPUT_STATE_ANYWHERE */
737:
738: { 0x00, 0x7f, NULL, &input_state_ground },
739: { 0x80, 0xbf, input_utf8_close, &input_state_ground },
740: { 0xc0, 0xff, NULL, &input_state_ground },
741:
742: { -1, -1, NULL, NULL }
743: };
744:
745: /* Input table compare. */
746: static int
747: input_table_compare(const void *key, const void *value)
748: {
749: const struct input_ctx *ictx = key;
750: const struct input_table_entry *entry = value;
751:
752: if (ictx->ch != entry->ch)
753: return (ictx->ch - entry->ch);
754: return (strcmp(ictx->interm_buf, entry->interm));
755: }
756:
757: /* Reset cell state to default. */
758: static void
759: input_reset_cell(struct input_ctx *ictx)
760: {
761: memcpy(&ictx->cell.cell, &grid_default_cell, sizeof ictx->cell.cell);
762: ictx->cell.set = 0;
763: ictx->cell.g0set = ictx->cell.g1set = 0;
764:
765: memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
766: ictx->old_cx = 0;
767: ictx->old_cy = 0;
768: }
769:
770: /* Initialise input parser. */
771: void
772: input_init(struct window_pane *wp)
773: {
774: struct input_ctx *ictx;
775:
776: ictx = wp->ictx = xcalloc(1, sizeof *ictx);
777:
778: ictx->input_space = INPUT_BUF_START;
779: ictx->input_buf = xmalloc(INPUT_BUF_START);
780:
781: ictx->since_ground = evbuffer_new();
782:
783: input_reset(wp, 0);
784: }
785:
786: /* Destroy input parser. */
787: void
788: input_free(struct window_pane *wp)
789: {
790: struct input_ctx *ictx = wp->ictx;
791:
792: free(ictx->input_buf);
793: evbuffer_free(ictx->since_ground);
794:
795: free(ictx);
796: wp->ictx = NULL;
797: }
798:
799: /* Reset input state and clear screen. */
800: void
801: input_reset(struct window_pane *wp, int clear)
802: {
803: struct input_ctx *ictx = wp->ictx;
804:
805: input_reset_cell(ictx);
806:
807: if (clear) {
808: if (wp->mode == NULL)
809: screen_write_start(&ictx->ctx, wp, &wp->base);
810: else
811: screen_write_start(&ictx->ctx, NULL, &wp->base);
812: screen_write_reset(&ictx->ctx);
813: screen_write_stop(&ictx->ctx);
814: }
815:
816: *ictx->interm_buf = '\0';
817: ictx->interm_len = 0;
818:
819: *ictx->param_buf = '\0';
820: ictx->param_len = 0;
821:
822: *ictx->input_buf = '\0';
823: ictx->input_len = 0;
824:
825: ictx->state = &input_state_ground;
826: ictx->flags = 0;
827: }
828:
829: /* Return pending data. */
830: struct evbuffer *
831: input_pending(struct window_pane *wp)
832: {
833: return (wp->ictx->since_ground);
834: }
835:
836: /* Change input state. */
837: static void
838: input_set_state(struct window_pane *wp, const struct input_transition *itr)
839: {
840: struct input_ctx *ictx = wp->ictx;
841:
842: if (ictx->state->exit != NULL)
843: ictx->state->exit(ictx);
844: ictx->state = itr->state;
845: if (ictx->state->enter != NULL)
846: ictx->state->enter(ictx);
847: }
848:
849: /* Parse input. */
850: void
851: input_parse(struct window_pane *wp)
852: {
853: struct input_ctx *ictx = wp->ictx;
854: const struct input_transition *itr;
855: struct evbuffer *evb = wp->event->input;
856: u_char *buf;
857: size_t len, off;
858:
859: if (EVBUFFER_LENGTH(evb) == 0)
860: return;
861:
862: window_update_activity(wp->window);
863: wp->flags |= PANE_CHANGED;
864:
865: /*
866: * Open the screen. Use NULL wp if there is a mode set as don't want to
867: * update the tty.
868: */
869: if (wp->mode == NULL)
870: screen_write_start(&ictx->ctx, wp, &wp->base);
871: else
872: screen_write_start(&ictx->ctx, NULL, &wp->base);
873: ictx->wp = wp;
874:
875: buf = EVBUFFER_DATA(evb);
876: len = EVBUFFER_LENGTH(evb);
877: off = 0;
878:
879: notify_input(wp, evb);
880:
881: log_debug("%s: %%%u %s, %zu bytes: %.*s", __func__, wp->id,
882: ictx->state->name, len, (int)len, buf);
883:
884: /* Parse the input. */
885: while (off < len) {
886: ictx->ch = buf[off++];
887:
888: /* Find the transition. */
889: itr = ictx->state->transitions;
890: while (itr->first != -1 && itr->last != -1) {
891: if (ictx->ch >= itr->first && ictx->ch <= itr->last)
892: break;
893: itr++;
894: }
895: if (itr->first == -1 || itr->last == -1) {
896: /* No transition? Eh? */
897: fatalx("no transition from state");
898: }
899:
900: /*
901: * Any state except print stops the current collection. This is
902: * an optimization to avoid checking if the attributes have
903: * changed for every character. It will stop unnecessarily for
904: * sequences that don't make a terminal change, but they should
905: * be the minority.
906: */
907: if (itr->handler != input_print)
908: screen_write_collect_end(&ictx->ctx);
909:
910: /*
911: * Execute the handler, if any. Don't switch state if it
912: * returns non-zero.
913: */
914: if (itr->handler != NULL && itr->handler(ictx) != 0)
915: continue;
916:
917: /* And switch state, if necessary. */
918: if (itr->state != NULL)
919: input_set_state(wp, itr);
920:
921: /* If not in ground state, save input. */
922: if (ictx->state != &input_state_ground)
923: evbuffer_add(ictx->since_ground, &ictx->ch, 1);
924: }
925:
926: /* Close the screen. */
927: screen_write_stop(&ictx->ctx);
928:
929: evbuffer_drain(evb, len);
930: }
931:
932: /* Split the parameter list (if any). */
933: static int
934: input_split(struct input_ctx *ictx)
935: {
936: const char *errstr;
937: char *ptr, *out;
938: int n;
939:
940: ictx->param_list_len = 0;
941: if (ictx->param_len == 0)
942: return (0);
943:
944: ptr = ictx->param_buf;
945: while ((out = strsep(&ptr, ";")) != NULL) {
946: if (*out == '\0')
947: n = -1;
948: else {
949: n = strtonum(out, 0, INT_MAX, &errstr);
950: if (errstr != NULL)
951: return (-1);
952: }
953:
954: ictx->param_list[ictx->param_list_len++] = n;
955: if (ictx->param_list_len == nitems(ictx->param_list))
956: return (-1);
957: }
958:
959: return (0);
960: }
961:
962: /* Get an argument or return default value. */
963: static int
964: input_get(struct input_ctx *ictx, u_int validx, int minval, int defval)
965: {
966: int retval;
967:
968: if (validx >= ictx->param_list_len)
969: return (defval);
970:
971: retval = ictx->param_list[validx];
972: if (retval == -1)
973: return (defval);
974: if (retval < minval)
975: return (minval);
976: return (retval);
977: }
978:
979: /* Reply to terminal query. */
980: static void
981: input_reply(struct input_ctx *ictx, const char *fmt, ...)
982: {
983: va_list ap;
984: char *reply;
985:
986: va_start(ap, fmt);
987: xvasprintf(&reply, fmt, ap);
988: va_end(ap);
989:
990: bufferevent_write(ictx->wp->event, reply, strlen(reply));
991: free(reply);
992: }
993:
994: /* Clear saved state. */
995: static void
996: input_clear(struct input_ctx *ictx)
997: {
998: *ictx->interm_buf = '\0';
999: ictx->interm_len = 0;
1000:
1001: *ictx->param_buf = '\0';
1002: ictx->param_len = 0;
1003:
1004: *ictx->input_buf = '\0';
1005: ictx->input_len = 0;
1006:
1007: ictx->flags &= ~INPUT_DISCARD;
1008: }
1009:
1010: /* Reset for ground state. */
1011: static void
1012: input_ground(struct input_ctx *ictx)
1013: {
1014: evbuffer_drain(ictx->since_ground, EVBUFFER_LENGTH(ictx->since_ground));
1015:
1016: if (ictx->input_space > INPUT_BUF_START) {
1017: ictx->input_space = INPUT_BUF_START;
1018: ictx->input_buf = xrealloc(ictx->input_buf, INPUT_BUF_START);
1019: }
1020: }
1021:
1022: /* Output this character to the screen. */
1023: static int
1024: input_print(struct input_ctx *ictx)
1025: {
1026: int set;
1027:
1028: set = ictx->cell.set == 0 ? ictx->cell.g0set : ictx->cell.g1set;
1029: if (set == 1)
1030: ictx->cell.cell.attr |= GRID_ATTR_CHARSET;
1031: else
1032: ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1033:
1034: utf8_set(&ictx->cell.cell.data, ictx->ch);
1035: screen_write_collect_add(&ictx->ctx, &ictx->cell.cell);
1036:
1037: ictx->cell.cell.attr &= ~GRID_ATTR_CHARSET;
1038:
1039: return (0);
1040: }
1041:
1042: /* Collect intermediate string. */
1043: static int
1044: input_intermediate(struct input_ctx *ictx)
1045: {
1046: if (ictx->interm_len == (sizeof ictx->interm_buf) - 1)
1047: ictx->flags |= INPUT_DISCARD;
1048: else {
1049: ictx->interm_buf[ictx->interm_len++] = ictx->ch;
1050: ictx->interm_buf[ictx->interm_len] = '\0';
1051: }
1052:
1053: return (0);
1054: }
1055:
1056: /* Collect parameter string. */
1057: static int
1058: input_parameter(struct input_ctx *ictx)
1059: {
1060: if (ictx->param_len == (sizeof ictx->param_buf) - 1)
1061: ictx->flags |= INPUT_DISCARD;
1062: else {
1063: ictx->param_buf[ictx->param_len++] = ictx->ch;
1064: ictx->param_buf[ictx->param_len] = '\0';
1065: }
1066:
1067: return (0);
1068: }
1069:
1070: /* Collect input string. */
1071: static int
1072: input_input(struct input_ctx *ictx)
1073: {
1074: size_t available;
1075:
1076: available = ictx->input_space;
1077: while (ictx->input_len + 1 >= available) {
1078: available *= 2;
1079: if (available > INPUT_BUF_LIMIT) {
1080: ictx->flags |= INPUT_DISCARD;
1081: return (0);
1082: }
1083: ictx->input_buf = xrealloc(ictx->input_buf, available);
1084: ictx->input_space = available;
1085: }
1086: ictx->input_buf[ictx->input_len++] = ictx->ch;
1087: ictx->input_buf[ictx->input_len] = '\0';
1088:
1089: return (0);
1090: }
1091:
1092: /* Execute C0 control sequence. */
1093: static int
1094: input_c0_dispatch(struct input_ctx *ictx)
1095: {
1096: struct screen_write_ctx *sctx = &ictx->ctx;
1097: struct window_pane *wp = ictx->wp;
1098: struct screen *s = sctx->s;
1099:
1100: log_debug("%s: '%c'", __func__, ictx->ch);
1101:
1102: switch (ictx->ch) {
1103: case '\000': /* NUL */
1104: break;
1105: case '\007': /* BEL */
1106: alerts_queue(wp->window, WINDOW_BELL);
1107: break;
1108: case '\010': /* BS */
1109: screen_write_backspace(sctx);
1110: break;
1111: case '\011': /* HT */
1112: /* Don't tab beyond the end of the line. */
1113: if (s->cx >= screen_size_x(s) - 1)
1114: break;
1115:
1116: /* Find the next tab point, or use the last column if none. */
1117: do {
1118: s->cx++;
1119: if (bit_test(s->tabs, s->cx))
1120: break;
1121: } while (s->cx < screen_size_x(s) - 1);
1122: break;
1123: case '\012': /* LF */
1124: case '\013': /* VT */
1125: case '\014': /* FF */
1126: screen_write_linefeed(sctx, 0);
1127: break;
1128: case '\015': /* CR */
1129: screen_write_carriagereturn(sctx);
1130: break;
1131: case '\016': /* SO */
1132: ictx->cell.set = 1;
1133: break;
1134: case '\017': /* SI */
1135: ictx->cell.set = 0;
1136: break;
1137: default:
1138: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1139: break;
1140: }
1141:
1142: return (0);
1143: }
1144:
1145: /* Execute escape sequence. */
1146: static int
1147: input_esc_dispatch(struct input_ctx *ictx)
1148: {
1149: struct screen_write_ctx *sctx = &ictx->ctx;
1150: struct screen *s = sctx->s;
1151: struct input_table_entry *entry;
1152:
1153: if (ictx->flags & INPUT_DISCARD)
1154: return (0);
1155: log_debug("%s: '%c', %s", __func__, ictx->ch, ictx->interm_buf);
1156:
1157: entry = bsearch(ictx, input_esc_table, nitems(input_esc_table),
1158: sizeof input_esc_table[0], input_table_compare);
1159: if (entry == NULL) {
1160: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1161: return (0);
1162: }
1163:
1164: switch (entry->type) {
1165: case INPUT_ESC_RIS:
1166: window_pane_reset_palette(ictx->wp);
1167: input_reset_cell(ictx);
1168: screen_write_reset(sctx);
1169: break;
1170: case INPUT_ESC_IND:
1171: screen_write_linefeed(sctx, 0);
1172: break;
1173: case INPUT_ESC_NEL:
1174: screen_write_carriagereturn(sctx);
1175: screen_write_linefeed(sctx, 0);
1176: break;
1177: case INPUT_ESC_HTS:
1178: if (s->cx < screen_size_x(s))
1179: bit_set(s->tabs, s->cx);
1180: break;
1181: case INPUT_ESC_RI:
1182: screen_write_reverseindex(sctx);
1183: break;
1184: case INPUT_ESC_DECKPAM:
1185: screen_write_mode_set(sctx, MODE_KKEYPAD);
1186: break;
1187: case INPUT_ESC_DECKPNM:
1188: screen_write_mode_clear(sctx, MODE_KKEYPAD);
1189: break;
1190: case INPUT_ESC_DECSC:
1191: memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
1192: ictx->old_cx = s->cx;
1193: ictx->old_cy = s->cy;
1194: break;
1195: case INPUT_ESC_DECRC:
1196: memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
1197: screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy);
1198: break;
1199: case INPUT_ESC_DECALN:
1200: screen_write_alignmenttest(sctx);
1201: break;
1202: case INPUT_ESC_SCSG0_ON:
1203: ictx->cell.g0set = 1;
1204: break;
1205: case INPUT_ESC_SCSG0_OFF:
1206: ictx->cell.g0set = 0;
1207: break;
1208: case INPUT_ESC_SCSG1_ON:
1209: ictx->cell.g1set = 1;
1210: break;
1211: case INPUT_ESC_SCSG1_OFF:
1212: ictx->cell.g1set = 0;
1213: break;
1214: case INPUT_ESC_ST:
1215: /* ST terminates OSC but the state transition already did it. */
1216: break;
1217: }
1218:
1219: return (0);
1220: }
1221:
1222: /* Execute control sequence. */
1223: static int
1224: input_csi_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: int n, m;
1230: u_int cx;
1231:
1232: if (ictx->flags & INPUT_DISCARD)
1233: return (0);
1234:
1235: log_debug("%s: '%c' \"%s\" \"%s\"",
1236: __func__, ictx->ch, ictx->interm_buf, ictx->param_buf);
1237:
1238: if (input_split(ictx) != 0)
1239: return (0);
1240:
1241: entry = bsearch(ictx, input_csi_table, nitems(input_csi_table),
1242: sizeof input_csi_table[0], input_table_compare);
1243: if (entry == NULL) {
1244: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1245: return (0);
1246: }
1247:
1248: switch (entry->type) {
1249: case INPUT_CSI_CBT:
1250: /* Find the previous tab point, n times. */
1251: cx = s->cx;
1252: if (cx > screen_size_x(s) - 1)
1253: cx = screen_size_x(s) - 1;
1254: n = input_get(ictx, 0, 1, 1);
1255: while (cx > 0 && n-- > 0) {
1256: do
1257: cx--;
1258: while (cx > 0 && !bit_test(s->tabs, cx));
1259: }
1260: s->cx = cx;
1261: break;
1262: case INPUT_CSI_CUB:
1263: screen_write_cursorleft(sctx, input_get(ictx, 0, 1, 1));
1264: break;
1265: case INPUT_CSI_CUD:
1266: screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1));
1267: break;
1268: case INPUT_CSI_CUF:
1269: screen_write_cursorright(sctx, input_get(ictx, 0, 1, 1));
1270: break;
1271: case INPUT_CSI_CUP:
1272: n = input_get(ictx, 0, 1, 1);
1273: m = input_get(ictx, 1, 1, 1);
1274: screen_write_cursormove(sctx, m - 1, n - 1);
1275: break;
1276: case INPUT_CSI_WINOPS:
1277: input_csi_dispatch_winops(ictx);
1278: break;
1279: case INPUT_CSI_CUU:
1280: screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1));
1281: break;
1282: case INPUT_CSI_CNL:
1283: screen_write_carriagereturn(sctx);
1284: screen_write_cursordown(sctx, input_get(ictx, 0, 1, 1));
1285: break;
1286: case INPUT_CSI_CPL:
1287: screen_write_carriagereturn(sctx);
1288: screen_write_cursorup(sctx, input_get(ictx, 0, 1, 1));
1289: break;
1290: case INPUT_CSI_DA:
1291: switch (input_get(ictx, 0, 0, 0)) {
1292: case 0:
1293: input_reply(ictx, "\033[?1;2c");
1294: break;
1295: default:
1296: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1297: break;
1298: }
1299: break;
1300: case INPUT_CSI_DA_TWO:
1301: switch (input_get(ictx, 0, 0, 0)) {
1302: case 0:
1303: input_reply(ictx, "\033[>84;0;0c");
1304: break;
1305: default:
1306: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1307: break;
1308: }
1309: break;
1310: case INPUT_CSI_ECH:
1311: screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1));
1312: break;
1313: case INPUT_CSI_DCH:
1314: screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1),
1315: ictx->cell.cell.bg);
1316: break;
1317: case INPUT_CSI_DECSTBM:
1318: n = input_get(ictx, 0, 1, 1);
1319: m = input_get(ictx, 1, 1, screen_size_y(s));
1320: screen_write_scrollregion(sctx, n - 1, m - 1);
1321: break;
1322: case INPUT_CSI_DL:
1323: screen_write_deleteline(sctx, input_get(ictx, 0, 1, 1),
1324: ictx->cell.cell.bg);
1325: break;
1326: case INPUT_CSI_DSR:
1327: switch (input_get(ictx, 0, 0, 0)) {
1328: case 5:
1329: input_reply(ictx, "\033[0n");
1330: break;
1331: case 6:
1332: input_reply(ictx, "\033[%u;%uR", s->cy + 1, s->cx + 1);
1333: break;
1334: default:
1335: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1336: break;
1337: }
1338: break;
1339: case INPUT_CSI_ED:
1340: switch (input_get(ictx, 0, 0, 0)) {
1341: case 0:
1342: screen_write_clearendofscreen(sctx, ictx->cell.cell.bg);
1343: break;
1344: case 1:
1345: screen_write_clearstartofscreen(sctx, ictx->cell.cell.bg);
1346: break;
1347: case 2:
1348: screen_write_clearscreen(sctx, ictx->cell.cell.bg);
1349: break;
1350: case 3:
1351: switch (input_get(ictx, 1, 0, 0)) {
1352: case 0:
1353: /*
1354: * Linux console extension to clear history
1355: * (for example before locking the screen).
1356: */
1357: screen_write_clearhistory(sctx);
1358: break;
1359: }
1360: break;
1361: default:
1362: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1363: break;
1364: }
1365: break;
1366: case INPUT_CSI_EL:
1367: switch (input_get(ictx, 0, 0, 0)) {
1368: case 0:
1369: screen_write_clearendofline(sctx, ictx->cell.cell.bg);
1370: break;
1371: case 1:
1372: screen_write_clearstartofline(sctx, ictx->cell.cell.bg);
1373: break;
1374: case 2:
1375: screen_write_clearline(sctx, ictx->cell.cell.bg);
1376: break;
1377: default:
1378: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1379: break;
1380: }
1381: break;
1382: case INPUT_CSI_HPA:
1383: n = input_get(ictx, 0, 1, 1);
1384: screen_write_cursormove(sctx, n - 1, s->cy);
1385: break;
1386: case INPUT_CSI_ICH:
1387: screen_write_insertcharacter(sctx, input_get(ictx, 0, 1, 1),
1388: ictx->cell.cell.bg);
1389: break;
1390: case INPUT_CSI_IL:
1391: screen_write_insertline(sctx, input_get(ictx, 0, 1, 1),
1392: ictx->cell.cell.bg);
1393: break;
1394: case INPUT_CSI_RCP:
1395: memcpy(&ictx->cell, &ictx->old_cell, sizeof ictx->cell);
1396: screen_write_cursormove(sctx, ictx->old_cx, ictx->old_cy);
1397: break;
1398: case INPUT_CSI_RM:
1399: input_csi_dispatch_rm(ictx);
1400: break;
1401: case INPUT_CSI_RM_PRIVATE:
1402: input_csi_dispatch_rm_private(ictx);
1403: break;
1404: case INPUT_CSI_SCP:
1405: memcpy(&ictx->old_cell, &ictx->cell, sizeof ictx->old_cell);
1406: ictx->old_cx = s->cx;
1407: ictx->old_cy = s->cy;
1408: break;
1409: case INPUT_CSI_SGR:
1410: input_csi_dispatch_sgr(ictx);
1411: break;
1412: case INPUT_CSI_SM:
1413: input_csi_dispatch_sm(ictx);
1414: break;
1415: case INPUT_CSI_SM_PRIVATE:
1416: input_csi_dispatch_sm_private(ictx);
1417: break;
1418: case INPUT_CSI_SU:
1419: screen_write_scrollup(sctx, input_get(ictx, 0, 1, 1));
1420: break;
1421: case INPUT_CSI_TBC:
1422: switch (input_get(ictx, 0, 0, 0)) {
1423: case 0:
1424: if (s->cx < screen_size_x(s))
1425: bit_clear(s->tabs, s->cx);
1426: break;
1427: case 3:
1428: bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
1429: break;
1430: default:
1431: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1432: break;
1433: }
1434: break;
1435: case INPUT_CSI_VPA:
1436: n = input_get(ictx, 0, 1, 1);
1437: screen_write_cursormove(sctx, s->cx, n - 1);
1438: break;
1439: case INPUT_CSI_DECSCUSR:
1440: n = input_get(ictx, 0, 0, 0);
1441: screen_set_cursor_style(s, n);
1442: break;
1443: }
1444:
1445: return (0);
1446: }
1447:
1448: /* Handle CSI RM. */
1449: static void
1450: input_csi_dispatch_rm(struct input_ctx *ictx)
1451: {
1452: u_int i;
1453:
1454: for (i = 0; i < ictx->param_list_len; i++) {
1455: switch (input_get(ictx, i, 0, -1)) {
1456: case 4: /* IRM */
1457: screen_write_mode_clear(&ictx->ctx, MODE_INSERT);
1458: break;
1459: case 34:
1460: screen_write_mode_set(&ictx->ctx, MODE_BLINKING);
1461: break;
1462: default:
1463: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1464: break;
1465: }
1466: }
1467: }
1468:
1469: /* Handle CSI private RM. */
1470: static void
1471: input_csi_dispatch_rm_private(struct input_ctx *ictx)
1472: {
1473: struct window_pane *wp = ictx->wp;
1474: u_int i;
1475:
1476: for (i = 0; i < ictx->param_list_len; i++) {
1477: switch (input_get(ictx, i, 0, -1)) {
1478: case 1: /* DECCKM */
1479: screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR);
1480: break;
1481: case 3: /* DECCOLM */
1482: screen_write_cursormove(&ictx->ctx, 0, 0);
1483: screen_write_clearscreen(&ictx->ctx,
1484: ictx->cell.cell.bg);
1485: break;
1486: case 7: /* DECAWM */
1487: screen_write_mode_clear(&ictx->ctx, MODE_WRAP);
1488: break;
1489: case 12:
1490: screen_write_mode_clear(&ictx->ctx, MODE_BLINKING);
1491: break;
1492: case 25: /* TCEM */
1493: screen_write_mode_clear(&ictx->ctx, MODE_CURSOR);
1494: break;
1495: case 1000:
1496: case 1001:
1497: case 1002:
1498: case 1003:
1499: screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
1500: break;
1501: case 1004:
1502: screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON);
1503: break;
1504: case 1005:
1505: screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8);
1506: break;
1507: case 1006:
1508: screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR);
1509: break;
1510: case 47:
1511: case 1047:
1512: window_pane_alternate_off(wp, &ictx->cell.cell, 0);
1513: break;
1514: case 1049:
1515: window_pane_alternate_off(wp, &ictx->cell.cell, 1);
1516: break;
1517: case 2004:
1518: screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE);
1519: break;
1520: default:
1521: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1522: break;
1523: }
1524: }
1525: }
1526:
1527: /* Handle CSI SM. */
1528: static void
1529: input_csi_dispatch_sm(struct input_ctx *ictx)
1530: {
1531: u_int i;
1532:
1533: for (i = 0; i < ictx->param_list_len; i++) {
1534: switch (input_get(ictx, i, 0, -1)) {
1535: case 4: /* IRM */
1536: screen_write_mode_set(&ictx->ctx, MODE_INSERT);
1537: break;
1538: case 34:
1539: screen_write_mode_clear(&ictx->ctx, MODE_BLINKING);
1540: break;
1541: default:
1542: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1543: break;
1544: }
1545: }
1546: }
1547:
1548: /* Handle CSI private SM. */
1549: static void
1550: input_csi_dispatch_sm_private(struct input_ctx *ictx)
1551: {
1552: struct window_pane *wp = ictx->wp;
1553: u_int i;
1554:
1555: for (i = 0; i < ictx->param_list_len; i++) {
1556: switch (input_get(ictx, i, 0, -1)) {
1557: case 1: /* DECCKM */
1558: screen_write_mode_set(&ictx->ctx, MODE_KCURSOR);
1559: break;
1560: case 3: /* DECCOLM */
1561: screen_write_cursormove(&ictx->ctx, 0, 0);
1562: screen_write_clearscreen(&ictx->ctx,
1563: ictx->cell.cell.bg);
1564: break;
1565: case 7: /* DECAWM */
1566: screen_write_mode_set(&ictx->ctx, MODE_WRAP);
1567: break;
1568: case 12:
1569: screen_write_mode_set(&ictx->ctx, MODE_BLINKING);
1570: break;
1571: case 25: /* TCEM */
1572: screen_write_mode_set(&ictx->ctx, MODE_CURSOR);
1573: break;
1574: case 1000:
1575: screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
1576: screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD);
1577: break;
1578: case 1002:
1579: screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
1580: screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON);
1581: break;
1582: case 1003:
1583: screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
1584: screen_write_mode_set(&ictx->ctx, MODE_MOUSE_ALL);
1585: break;
1586: case 1004:
1587: if (ictx->ctx.s->mode & MODE_FOCUSON)
1588: break;
1589: screen_write_mode_set(&ictx->ctx, MODE_FOCUSON);
1590: wp->flags |= PANE_FOCUSPUSH; /* force update */
1591: break;
1592: case 1005:
1593: screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8);
1594: break;
1595: case 1006:
1596: screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR);
1597: break;
1598: case 47:
1599: case 1047:
1600: window_pane_alternate_on(wp, &ictx->cell.cell, 0);
1601: break;
1602: case 1049:
1603: window_pane_alternate_on(wp, &ictx->cell.cell, 1);
1604: break;
1605: case 2004:
1606: screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE);
1607: break;
1608: default:
1609: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1610: break;
1611: }
1612: }
1613: }
1614:
1615: /* Handle CSI window operations. */
1616: static void
1617: input_csi_dispatch_winops(struct input_ctx *ictx)
1618: {
1619: struct window_pane *wp = ictx->wp;
1620: int n, m;
1621:
1622: m = 0;
1623: while ((n = input_get(ictx, m, 0, -1)) != -1) {
1624: switch (n) {
1625: case 1:
1626: case 2:
1627: case 5:
1628: case 6:
1629: case 7:
1630: case 11:
1631: case 13:
1632: case 14:
1633: case 19:
1634: case 20:
1635: case 21:
1636: case 24:
1637: break;
1638: case 3:
1639: case 4:
1640: case 8:
1641: m++;
1642: if (input_get(ictx, m, 0, -1) == -1)
1643: return;
1644: /* FALLTHROUGH */
1645: case 9:
1646: case 10:
1647: case 22:
1648: case 23:
1649: m++;
1650: if (input_get(ictx, m, 0, -1) == -1)
1651: return;
1652: break;
1653: case 18:
1654: input_reply(ictx, "\033[8;%u;%ut", wp->sy, wp->sx);
1655: break;
1656: default:
1657: log_debug("%s: unknown '%c'", __func__, ictx->ch);
1658: break;
1659: }
1660: m++;
1661: }
1662: }
1663:
1664: /* Handle CSI SGR for 256 colours. */
1665: static void
1666: input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
1667: {
1668: struct grid_cell *gc = &ictx->cell.cell;
1669: int c;
1670:
1671: (*i)++;
1672: c = input_get(ictx, *i, 0, -1);
1673: if (c == -1) {
1674: if (fgbg == 38)
1675: gc->fg = 8;
1676: else if (fgbg == 48)
1677: gc->bg = 8;
1678: } else {
1679: if (fgbg == 38)
1680: gc->fg = c | COLOUR_FLAG_256;
1681: else if (fgbg == 48)
1682: gc->bg = c | COLOUR_FLAG_256;
1683: }
1684: }
1685:
1686: /* Handle CSI SGR for RGB colours. */
1687: static void
1688: input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
1689: {
1690: struct grid_cell *gc = &ictx->cell.cell;
1691: int r, g, b;
1692:
1693: (*i)++;
1694: r = input_get(ictx, *i, 0, -1);
1695: if (r == -1 || r > 255)
1696: return;
1697: (*i)++;
1698: g = input_get(ictx, *i, 0, -1);
1699: if (g == -1 || g > 255)
1700: return;
1701: (*i)++;
1702: b = input_get(ictx, *i, 0, -1);
1703: if (b == -1 || b > 255)
1704: return;
1705:
1706: if (fgbg == 38)
1707: gc->fg = colour_join_rgb(r, g, b);
1708: else if (fgbg == 48)
1709: gc->bg = colour_join_rgb(r, g, b);
1710: }
1711:
1712: /* Handle CSI SGR. */
1713: static void
1714: input_csi_dispatch_sgr(struct input_ctx *ictx)
1715: {
1716: struct grid_cell *gc = &ictx->cell.cell;
1717: u_int i;
1718: int n;
1719:
1720: if (ictx->param_list_len == 0) {
1721: memcpy(gc, &grid_default_cell, sizeof *gc);
1722: return;
1723: }
1724:
1725: for (i = 0; i < ictx->param_list_len; i++) {
1726: n = input_get(ictx, i, 0, 0);
1727:
1728: if (n == 38 || n == 48) {
1729: i++;
1730: switch (input_get(ictx, i, 0, -1)) {
1731: case 2:
1732: input_csi_dispatch_sgr_rgb(ictx, n, &i);
1733: break;
1734: case 5:
1735: input_csi_dispatch_sgr_256(ictx, n, &i);
1736: break;
1737: }
1738: continue;
1739: }
1740:
1741: switch (n) {
1742: case 0:
1743: case 10:
1744: memcpy(gc, &grid_default_cell, sizeof *gc);
1745: break;
1746: case 1:
1747: gc->attr |= GRID_ATTR_BRIGHT;
1748: break;
1749: case 2:
1750: gc->attr |= GRID_ATTR_DIM;
1751: break;
1752: case 3:
1753: gc->attr |= GRID_ATTR_ITALICS;
1754: break;
1755: case 4:
1756: gc->attr |= GRID_ATTR_UNDERSCORE;
1757: break;
1758: case 5:
1759: gc->attr |= GRID_ATTR_BLINK;
1760: break;
1761: case 7:
1762: gc->attr |= GRID_ATTR_REVERSE;
1763: break;
1764: case 8:
1765: gc->attr |= GRID_ATTR_HIDDEN;
1766: break;
1767: case 9:
1768: gc->attr |= GRID_ATTR_STRIKETHROUGH;
1769: break;
1770: case 22:
1771: gc->attr &= ~(GRID_ATTR_BRIGHT|GRID_ATTR_DIM);
1772: break;
1773: case 23:
1774: gc->attr &= ~GRID_ATTR_ITALICS;
1775: break;
1776: case 24:
1777: gc->attr &= ~GRID_ATTR_UNDERSCORE;
1778: break;
1779: case 25:
1780: gc->attr &= ~GRID_ATTR_BLINK;
1781: break;
1782: case 27:
1783: gc->attr &= ~GRID_ATTR_REVERSE;
1784: break;
1785: case 28:
1786: gc->attr &= ~GRID_ATTR_HIDDEN;
1787: break;
1788: case 29:
1789: gc->attr &= ~GRID_ATTR_STRIKETHROUGH;
1790: break;
1791: case 30:
1792: case 31:
1793: case 32:
1794: case 33:
1795: case 34:
1796: case 35:
1797: case 36:
1798: case 37:
1799: gc->fg = n - 30;
1800: break;
1801: case 39:
1802: gc->fg = 8;
1803: break;
1804: case 40:
1805: case 41:
1806: case 42:
1807: case 43:
1808: case 44:
1809: case 45:
1810: case 46:
1811: case 47:
1812: gc->bg = n - 40;
1813: break;
1814: case 49:
1815: gc->bg = 8;
1816: break;
1817: case 90:
1818: case 91:
1819: case 92:
1820: case 93:
1821: case 94:
1822: case 95:
1823: case 96:
1824: case 97:
1825: gc->fg = n;
1826: break;
1827: case 100:
1828: case 101:
1829: case 102:
1830: case 103:
1831: case 104:
1832: case 105:
1833: case 106:
1834: case 107:
1835: gc->bg = n - 10;
1836: break;
1837: }
1838: }
1839: }
1840:
1841: /* DCS terminator (ST) received. */
1842: static int
1843: input_dcs_dispatch(struct input_ctx *ictx)
1844: {
1845: const char prefix[] = "tmux;";
1846: const u_int prefix_len = (sizeof prefix) - 1;
1847:
1848: if (ictx->flags & INPUT_DISCARD)
1849: return (0);
1850:
1851: log_debug("%s: \"%s\"", __func__, ictx->input_buf);
1852:
1853: /* Check for tmux prefix. */
1854: if (ictx->input_len >= prefix_len &&
1855: strncmp(ictx->input_buf, prefix, prefix_len) == 0) {
1856: screen_write_rawstring(&ictx->ctx,
1857: ictx->input_buf + prefix_len, ictx->input_len - prefix_len);
1858: }
1859:
1860: return (0);
1861: }
1862:
1863: /* OSC string started. */
1864: static void
1865: input_enter_osc(struct input_ctx *ictx)
1866: {
1867: log_debug("%s", __func__);
1868:
1869: input_clear(ictx);
1870: }
1871:
1872: /* OSC terminator (ST) received. */
1873: static void
1874: input_exit_osc(struct input_ctx *ictx)
1875: {
1876: u_char *p = ictx->input_buf;
1877: u_int option;
1878:
1879: if (ictx->flags & INPUT_DISCARD)
1880: return;
1881: if (ictx->input_len < 1 || *p < '0' || *p > '9')
1882: return;
1883:
1884: log_debug("%s: \"%s\"", __func__, p);
1885:
1886: option = 0;
1887: while (*p >= '0' && *p <= '9')
1888: option = option * 10 + *p++ - '0';
1889: if (*p == ';')
1890: p++;
1891:
1892: switch (option) {
1893: case 0:
1894: case 2:
1895: screen_set_title(ictx->ctx.s, p);
1896: server_status_window(ictx->wp->window);
1897: break;
1898: case 4:
1899: input_osc_4(ictx->wp, p);
1900: break;
1901: case 52:
1902: input_osc_52(ictx->wp, p);
1903: break;
1904: case 12:
1905: if (*p != '?') /* ? is colour request */
1906: screen_set_cursor_colour(ictx->ctx.s, p);
1907: break;
1908: case 104:
1909: input_osc_104(ictx->wp, p);
1910: break;
1911: case 112:
1912: if (*p == '\0') /* no arguments allowed */
1913: screen_set_cursor_colour(ictx->ctx.s, "");
1914: break;
1915: default:
1916: log_debug("%s: unknown '%u'", __func__, option);
1917: break;
1918: }
1919: }
1920:
1921: /* APC string started. */
1922: static void
1923: input_enter_apc(struct input_ctx *ictx)
1924: {
1925: log_debug("%s", __func__);
1926:
1927: input_clear(ictx);
1928: }
1929:
1930: /* APC terminator (ST) received. */
1931: static void
1932: input_exit_apc(struct input_ctx *ictx)
1933: {
1934: if (ictx->flags & INPUT_DISCARD)
1935: return;
1936: log_debug("%s: \"%s\"", __func__, ictx->input_buf);
1937:
1938: screen_set_title(ictx->ctx.s, ictx->input_buf);
1939: server_status_window(ictx->wp->window);
1940: }
1941:
1942: /* Rename string started. */
1943: static void
1944: input_enter_rename(struct input_ctx *ictx)
1945: {
1946: log_debug("%s", __func__);
1947:
1948: input_clear(ictx);
1949: }
1950:
1951: /* Rename terminator (ST) received. */
1952: static void
1953: input_exit_rename(struct input_ctx *ictx)
1954: {
1955: if (ictx->flags & INPUT_DISCARD)
1956: return;
1957: if (!options_get_number(ictx->wp->window->options, "allow-rename"))
1958: return;
1959: log_debug("%s: \"%s\"", __func__, ictx->input_buf);
1960:
1961: window_set_name(ictx->wp->window, ictx->input_buf);
1962: options_set_number(ictx->wp->window->options, "automatic-rename", 0);
1963:
1964: server_status_window(ictx->wp->window);
1965: }
1966:
1967: /* Open UTF-8 character. */
1968: static int
1969: input_utf8_open(struct input_ctx *ictx)
1970: {
1971: struct utf8_data *ud = &ictx->utf8data;
1972:
1973: if (utf8_open(ud, ictx->ch) != UTF8_MORE)
1974: fatalx("UTF-8 open invalid %#x", ictx->ch);
1975:
1976: log_debug("%s %hhu", __func__, ud->size);
1977:
1978: return (0);
1979: }
1980:
1981: /* Append to UTF-8 character. */
1982: static int
1983: input_utf8_add(struct input_ctx *ictx)
1984: {
1985: struct utf8_data *ud = &ictx->utf8data;
1986:
1987: if (utf8_append(ud, ictx->ch) != UTF8_MORE)
1988: fatalx("UTF-8 add invalid %#x", ictx->ch);
1989:
1990: log_debug("%s", __func__);
1991:
1992: return (0);
1993: }
1994:
1995: /* Close UTF-8 string. */
1996: static int
1997: input_utf8_close(struct input_ctx *ictx)
1998: {
1999: struct utf8_data *ud = &ictx->utf8data;
2000:
2001: if (utf8_append(ud, ictx->ch) != UTF8_DONE) {
2002: /*
2003: * An error here could be invalid UTF-8 or it could be a
2004: * nonprintable character for which we can't get the
2005: * width. Drop it.
2006: */
2007: return (0);
2008: }
2009:
2010: log_debug("%s %hhu '%*s' (width %hhu)", __func__, ud->size,
2011: (int)ud->size, ud->data, ud->width);
2012:
2013: utf8_copy(&ictx->cell.cell.data, ud);
2014: screen_write_cell(&ictx->ctx, &ictx->cell.cell);
2015:
2016: return (0);
2017: }
2018:
2019: /* Handle the OSC 4 sequence for setting (multiple) palette entries. */
2020: static void
2021: input_osc_4(struct window_pane *wp, const char *p)
2022: {
2023: char *copy, *s, *next = NULL;
2024: long idx;
2025: u_int r, g, b;
2026:
2027: copy = s = xstrdup(p);
2028: while (s != NULL && *s != '\0') {
2029: idx = strtol(s, &next, 10);
2030: if (*next++ != ';')
2031: goto bad;
2032: if (idx < 0 || idx >= 0x100)
2033: goto bad;
2034:
2035: s = strsep(&next, ";");
2036: if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) {
2037: s = next;
2038: continue;
2039: }
2040:
2041: window_pane_set_palette(wp, idx, colour_join_rgb(r, g, b));
2042: s = next;
2043: }
2044:
2045: free(copy);
2046: return;
2047:
2048: bad:
2049: log_debug("bad OSC 4: %s", p);
2050: free(copy);
2051: }
2052:
2053: /* Handle the OSC 52 sequence for setting the clipboard. */
2054: static void
2055: input_osc_52(struct window_pane *wp, const char *p)
2056: {
2057: char *end;
2058: size_t len;
2059: u_char *out;
2060: int outlen;
2061: struct screen_write_ctx ctx;
2062:
2063: if ((end = strchr(p, ';')) == NULL)
2064: return;
2065: end++;
2066: if (*end == '\0')
2067: return;
2068:
2069: len = (strlen(end) / 4) * 3;
2070: if (len == 0)
2071: return;
2072:
2073: out = xmalloc(len);
2074: if ((outlen = b64_pton(end, out, len)) == -1) {
2075: free(out);
2076: return;
2077: }
2078:
2079: if (options_get_number(global_options, "set-clipboard")) {
2080: screen_write_start(&ctx, wp, NULL);
2081: screen_write_setselection(&ctx, out, outlen);
2082: screen_write_stop(&ctx);
2083: }
2084: paste_add(out, outlen);
2085: }
2086:
2087: /* Handle the OSC 104 sequence for unsetting (multiple) palette entries. */
2088: static void
2089: input_osc_104(struct window_pane *wp, const char *p)
2090: {
2091: char *copy, *s;
2092: long idx;
2093:
2094: if (*p == '\0') {
2095: window_pane_reset_palette(wp);
2096: return;
2097: }
2098:
2099: copy = s = xstrdup(p);
2100: while (*s != '\0') {
2101: idx = strtol(s, &s, 10);
2102: if (*s != '\0' && *s != ';')
2103: goto bad;
2104: if (idx < 0 || idx >= 0x100)
2105: goto bad;
2106:
2107: window_pane_unset_palette(wp, idx);
2108: if (*s == ';')
2109: s++;
2110: }
2111: free(copy);
2112: return;
2113:
2114: bad:
2115: log_debug("bad OSC 104: %s", p);
2116: free(copy);
2117: }
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