-
Notifications
You must be signed in to change notification settings - Fork 0
/
gpsmon.c
1520 lines (1383 loc) · 40.6 KB
/
gpsmon.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* The generic GPS packet monitor.
*
* This file is Copyright (c) 2010-2018 by the GPSD project
* SPDX-License-Identifier: BSD-2-clause
*/
/* for vsnprintf() FreeBSD wants __ISO_C_VISIBLE >= 1999 */
#define __ISO_C_VISIBLE 1999
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <setjmp.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <time.h>
#include <math.h>
#include <sys/time.h> /* expected to declare select(2) a la SuS */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/select.h>
#include <fcntl.h>
#include <unistd.h>
#include "gpsd.h"
#include "gps_json.h"
#include "gpsmon.h"
#include "gpsdclient.h"
#include "revision.h"
#include "strfuncs.h"
#include "timespec.h"
#define BUFLEN 2048
/* needed under FreeBSD */
#ifndef HOST_NAME_MAX
#define HOST_NAME_MAX 255
#endif /* HOST_NAME_MAX */
/* external capability tables */
extern struct monitor_object_t nmea_mmt, sirf_mmt, ashtech_mmt;
extern struct monitor_object_t garmin_mmt, garmin_bin_ser_mmt;
extern struct monitor_object_t italk_mmt, ubx_mmt, superstar2_mmt;
extern struct monitor_object_t fv18_mmt, gpsclock_mmt, mtk3301_mmt;
extern struct monitor_object_t oncore_mmt, tnt_mmt, aivdm_mmt;
#ifdef NMEA0183_ENABLE
extern const struct gps_type_t driver_nmea0183;
#endif /* NMEA0183_ENABLE */
/* These are public */
struct gps_device_t session;
WINDOW *devicewin;
bool serial;
/* These are private */
static struct gps_context_t context;
static bool curses_active;
static WINDOW *statwin, *cmdwin;
static WINDOW *packetwin;
static FILE *logfile;
static char *type_name;
static size_t promptlen = 0;
static struct termios cooked, rare;
static struct fixsource_t source;
static char hostname[HOST_NAME_MAX];
#ifdef NTP_ENABLE
static struct timedelta_t time_offset;
#endif /* NTP_ENABLE */
#ifdef PASSTHROUGH_ENABLE
/* no methods, it's all device window */
extern const struct gps_type_t driver_json_passthrough;
const struct monitor_object_t json_mmt = {
.initialize = NULL,
.update = NULL,
.command = NULL,
.wrap = NULL,
.min_y = 0, .min_x = 80, /* no need for a device window */
.driver = &driver_json_passthrough,
};
#endif /* PASSTHROUGH_ENABLE */
static const struct monitor_object_t *monitor_objects[] = {
#ifdef NMEA0183_ENABLE
&nmea_mmt,
#if defined(GARMIN_ENABLE) && defined(NMEA0183_ENABLE)
&garmin_mmt,
#endif /* GARMIN_ENABLE && NMEA0183_ENABLE */
#if defined(GARMIN_ENABLE) && defined(BINARY_ENABLE)
&garmin_bin_ser_mmt,
#endif /* defined(GARMIN_ENABLE) && defined(BINARY_ENABLE) */
#ifdef ASHTECH_ENABLE
&ashtech_mmt,
#endif /* ASHTECH_ENABLE */
#ifdef FV18_ENABLE
&fv18_mmt,
#endif /* FV18_ENABLE */
#ifdef GPSCLOCK_ENABLE
&gpsclock_mmt,
#endif /* GPSCLOCK_ENABLE */
#ifdef MTK3301_ENABLE
&mtk3301_mmt,
#endif /* MTK3301_ENABLE */
#ifdef AIVDM_ENABLE
&aivdm_mmt,
#endif /* AIVDM_ENABLE */
#endif /* NMEA0183_ENABLE */
#if defined(SIRF_ENABLE) && defined(BINARY_ENABLE)
&sirf_mmt,
#endif /* defined(SIRF_ENABLE) && defined(BINARY_ENABLE) */
#if defined(UBLOX_ENABLE) && defined(BINARY_ENABLE)
&ubx_mmt,
#endif /* defined(UBLOX_ENABLE) && defined(BINARY_ENABLE) */
#if defined(ITRAX_ENABLE) && defined(BINARY_ENABLE)
&italk_mmt,
#endif /* defined(ITALK_ENABLE) && defined(BINARY_ENABLE) */
#if defined(SUPERSTAR2_ENABLE) && defined(BINARY_ENABLE)
&superstar2_mmt,
#endif /* defined(SUPERSTAR2_ENABLE) && defined(BINARY_ENABLE) */
#if defined(ONCORE_ENABLE) && defined(BINARY_ENABLE)
&oncore_mmt,
#endif /* defined(ONCORE_ENABLE) && defined(BINARY_ENABLE) */
#ifdef TNT_ENABLE
&tnt_mmt,
#endif /* TNT_ENABLE */
#ifdef PASSTHROUGH_ENABLE
&json_mmt,
#endif /* PASSTHROUGH_ENABLE */
NULL,
};
static const struct monitor_object_t **active;
static const struct gps_type_t *fallback;
static jmp_buf terminate;
#define display (void)mvwprintw
/* termination codes */
#define TERM_SELECT_FAILED 1
#define TERM_DRIVER_SWITCH 2
#define TERM_EMPTY_READ 3
#define TERM_READ_ERROR 4
#define TERM_SIGNAL 5
#define TERM_QUIT 6
/* PPS monitoring */
#if defined(PPS_ENABLE)
static inline void report_lock(void)
{
gpsd_acquire_reporting_lock();
}
static inline void report_unlock(void)
{
gpsd_release_reporting_lock();
}
#else
static inline void report_lock(void) { }
static inline void report_unlock(void) { }
#endif /* PPS_ENABLE */
#define PPSBAR "-------------------------------------" \
" PPS " \
"-------------------------------------\n"
/* Dummy conditional for *display* of (possibly remote) PPS events */
#define PPS_DISPLAY_ENABLE 1
/******************************************************************************
*
* Visualization helpers
*
******************************************************************************/
#ifdef PPS_ENABLE
static void visibilize(char *buf2, size_t len2, const char *buf)
/* string is mostly printable, dress up the nonprintables a bit */
{
const char *sp;
buf2[0] = '\0';
for (sp = buf; *sp != '\0' && strlen(buf2)+4 < len2; sp++)
if (isprint((unsigned char) *sp) || (sp[0] == '\n' && sp[1] == '\0')
|| (sp[0] == '\r' && sp[2] == '\0'))
(void)snprintf(buf2 + strlen(buf2), 2, "%c", *sp);
else
(void)snprintf(buf2 + strlen(buf2), 6, "\\x%02x",
(unsigned)(*sp & 0xff));
}
#endif /* PPS_ENABLE */
static void cond_hexdump(char *buf2, size_t len2,
const char *buf, size_t len)
/* pass through visibilized if all printable, hexdump otherwise */
{
size_t i;
bool printable = true;
for (i = 0; i < len; i++)
if (!isprint((unsigned char) buf[i]) && !isspace((unsigned char) buf[i]))
printable = false;
if (printable) {
size_t j;
for (i = j = 0; i < len && j < len2 - 1; i++)
if (isprint((unsigned char) buf[i])) {
buf2[j++] = buf[i];
buf2[j] = '\0';
}
else {
if (TEXTUAL_PACKET_TYPE(session.lexer.type)) {
if (i == len - 1 && buf[i] == '\n')
continue;
if (i == len - 2 && buf[i] == '\r')
continue;
}
(void)snprintf(&buf2[j], len2-strlen(buf2), "\\x%02x", (unsigned int)(buf[i] & 0xff));
j = strlen(buf2);
}
} else {
buf2[0] = '\0';
for (i = 0; i < len; i++)
str_appendf(buf2, len2, "%02x", (unsigned int)(buf[i] & 0xff));
}
}
#ifdef NTP_ENABLE
void toff_update(WINDOW *win, int y, int x)
{
assert(win != NULL);
if (time_offset.real.tv_sec != 0)
{
/* NOTE: can not use double here due to precision requirements */
struct timespec timedelta;
int i, ymax, xmax;
getmaxyx(win, ymax, xmax);
assert(ymax > 0); /* squash a compiler warning */
(void)wmove(win, y, x);
/*
* The magic number shortening the field works because
* we know we'll never see more than 5 digits of seconds
* rather than 10.
*/
for (i = 0; i < TIMESPEC_LEN-4 && x + i < xmax - 1; i++)
(void)waddch(win, ' ');
TS_SUB(&timedelta, &time_offset.clock, &time_offset.real);
if ( 86400 < (long)labs(timedelta.tv_sec) ) {
/* more than one day off, overflow */
/* need a bigger field to show it */
(void)mvwaddstr(win, y, x, "> 1 day");
} else {
char buf[TIMESPEC_LEN];
timespec_str(&timedelta, buf, sizeof(buf));
(void)mvwaddstr(win, y, x, buf);
}
}
}
#endif /* NTP_ENABLE */
/* FIXME: Decouple this reporting from local PPS monitoring. */
#ifdef PPS_ENABLE
void pps_update(WINDOW *win, int y, int x)
{
struct timedelta_t ppstimes;
assert(win != NULL);
if (pps_thread_ppsout(&session.pps_thread, &ppstimes) > 0) {
/* NOTE: can not use double here due to precision requirements */
struct timespec timedelta;
int i, ymax, xmax;
getmaxyx(win, ymax, xmax);
assert(ymax > 0); /* squash a compiler warning */
(void)wmove(win, y, x);
/* see toff_update() for explanation of the magic number */
for (i = 0; i < TIMESPEC_LEN-4 && x + i < xmax - 1; i++)
(void)waddch(win, ' ');
TS_SUB( &timedelta, &ppstimes.clock, &ppstimes.real);
if ( 86400 < (long)labs(timedelta.tv_sec) ) {
/* more than one day off, overflow */
/* need a bigger field to show it */
(void)mvwaddstr(win, y, x, "> 1 day");
} else {
char buf[TIMESPEC_LEN];
timespec_str(&timedelta, buf, sizeof(buf));
(void)mvwaddstr(win, y, x, buf);
}
(void)wnoutrefresh(win);
}
}
#endif /* PPS_ENABLE */
/******************************************************************************
*
* Curses I/O
*
******************************************************************************/
void monitor_fixframe(WINDOW * win)
{
int ymax, xmax, ycur, xcur;
assert(win != NULL);
getyx(win, ycur, xcur);
getmaxyx(win, ymax, xmax);
assert(xcur > -1 && ymax > 0); /* squash a compiler warning */
(void)mvwaddch(win, ycur, xmax - 1, ACS_VLINE);
}
#if defined(CONTROLSEND_ENABLE) || defined(RECONFIGURE_ENABLE)
static void packet_dump(const char *buf, size_t buflen)
{
if (packetwin != NULL) {
char buf2[buflen * 2];
cond_hexdump(buf2, buflen * 2, buf, buflen);
(void)waddstr(packetwin, buf2);
(void)waddch(packetwin, (chtype)'\n');
}
}
static void monitor_dump_send(const char *buf, size_t len)
{
if (packetwin != NULL) {
report_lock();
(void)wattrset(packetwin, A_BOLD);
(void)wprintw(packetwin, ">>>");
packet_dump(buf, len);
(void)wattrset(packetwin, A_NORMAL);
report_unlock();
}
}
#endif /* defined(CONTROLSEND_ENABLE) || defined(RECONFIGURE_ENABLE) */
static void gpsmon_report(const char *buf)
/* log to the packet window if curses is up, otherwise stdout */
{
/* report locking is left to caller */
if (!curses_active)
(void)fputs(buf, stdout);
else if (packetwin != NULL)
(void)waddstr(packetwin, buf);
if (logfile != NULL)
(void)fputs(buf, logfile);
}
#ifdef PPS_ENABLE
static void packet_vlog(char *buf, size_t len, const char *fmt, va_list ap)
{
char buf2[BUFSIZ];
visibilize(buf2, sizeof(buf2), buf);
report_lock();
(void)vsnprintf(buf2 + strlen(buf2), len, fmt, ap);
gpsmon_report(buf2);
report_unlock();
}
#endif /* PPS_ENABLE */
#ifdef RECONFIGURE_ENABLE
static void announce_log(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list ap;
va_start(ap, fmt);
(void)vsnprintf(buf, sizeof(buf) - 5, fmt, ap);
va_end(ap);
if (packetwin != NULL) {
report_lock();
(void)wattrset(packetwin, A_BOLD);
(void)wprintw(packetwin, ">>>");
(void)waddstr(packetwin, buf);
(void)wattrset(packetwin, A_NORMAL);
(void)wprintw(packetwin, "\n");
report_unlock();
}
if (logfile != NULL) {
(void)fprintf(logfile, ">>>%s\n", buf);
}
}
#endif /* RECONFIGURE_ENABLE */
static void monitor_vcomplain(const char *fmt, va_list ap)
{
assert(cmdwin!=NULL);
(void)wmove(cmdwin, 0, (int)promptlen);
(void)wclrtoeol(cmdwin);
(void)wattrset(cmdwin, A_BOLD);
(void)vwprintw(cmdwin, (char *)fmt, ap);
(void)wattrset(cmdwin, A_NORMAL);
(void)wrefresh(cmdwin);
(void)doupdate();
(void)wgetch(cmdwin);
(void)wmove(cmdwin, 0, (int)promptlen);
(void)wclrtoeol(cmdwin);
(void)wrefresh(cmdwin);
(void)wmove(cmdwin, 0, (int)promptlen);
(void)doupdate();
}
void monitor_complain(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
monitor_vcomplain(fmt, ap);
va_end(ap);
}
void monitor_log(const char *fmt, ...)
{
if (packetwin != NULL) {
va_list ap;
report_lock();
va_start(ap, fmt);
(void)vwprintw(packetwin, (char *)fmt, ap);
va_end(ap);
report_unlock();
}
}
static const char *promptgen(void)
{
static char buf[sizeof(session.gpsdata.dev.path) + HOST_NAME_MAX + 20];
if (serial)
(void)snprintf(buf, sizeof(buf),
"%s:%s %u %u%c%u",
hostname,
session.gpsdata.dev.path,
session.gpsdata.dev.baudrate,
9 - session.gpsdata.dev.stopbits,
session.gpsdata.dev.parity,
session.gpsdata.dev.stopbits);
else {
(void)strlcpy(buf, session.gpsdata.dev.path, sizeof(buf));
if (source.device != NULL) {
(void) strlcat(buf, ":", sizeof(buf));
(void) strlcat(buf, source.device, sizeof(buf));
}
}
return buf;
}
static void refresh_statwin(void)
/* refresh the device-identification window */
{
/* *INDENT-OFF* */
type_name =
session.device_type ? session.device_type->type_name : "Unknown device";
/* *INDENT-ON* */
(void)wclear(statwin);
(void)wattrset(statwin, A_BOLD);
(void)mvwaddstr(statwin, 0, 0, promptgen());
(void)wattrset(statwin, A_NORMAL);
(void)wnoutrefresh(statwin);
}
static void refresh_cmdwin(void)
/* refresh the command window */
{
(void)wmove(cmdwin, 0, 0);
(void)wprintw(cmdwin, type_name);
promptlen = strlen(type_name);
if (fallback != NULL && strcmp(fallback->type_name, type_name) != 0) {
(void)waddch(cmdwin, (chtype)' ');
(void)waddch(cmdwin, (chtype)'(');
(void)waddstr(cmdwin, fallback->type_name);
(void)waddch(cmdwin, (chtype)')');
promptlen += strlen(fallback->type_name) + 3;
}
(void)wprintw(cmdwin, "> ");
promptlen += 2;
(void)wclrtoeol(cmdwin);
(void)wnoutrefresh(cmdwin);
}
static bool curses_init(void)
{
(void)initscr();
(void)cbreak();
(void)intrflush(stdscr, FALSE);
(void)keypad(stdscr, true);
(void)clearok(stdscr, true);
(void)clear();
(void)noecho();
curses_active = true;
#define CMDWINHEIGHT 1
statwin = newwin(CMDWINHEIGHT, 30, 0, 0);
cmdwin = newwin(CMDWINHEIGHT, 0, 0, 30);
packetwin = newwin(0, 0, CMDWINHEIGHT, 0);
if (statwin == NULL || cmdwin == NULL || packetwin == NULL)
return false;
(void)scrollok(packetwin, true);
(void)wsetscrreg(packetwin, 0, LINES - CMDWINHEIGHT);
(void)wmove(packetwin, 0, 0);
refresh_statwin();
refresh_cmdwin();
return true;
}
static bool switch_type(const struct gps_type_t *devtype)
{
const struct monitor_object_t **trial, **newobject;
newobject = NULL;
for (trial = monitor_objects; *trial; trial++) {
if (strcmp((*trial)->driver->type_name, devtype->type_name)==0) {
newobject = trial;
break;
}
}
if (newobject) {
if (LINES < (*newobject)->min_y + 1 || COLS < (*newobject)->min_x) {
monitor_complain("%s requires %dx%d screen",
(*newobject)->driver->type_name,
(*newobject)->min_x, (*newobject)->min_y + 1);
} else {
int leftover;
if (active != NULL) {
if ((*active)->wrap != NULL)
(*active)->wrap();
(void)delwin(devicewin);
}
active = newobject;
if (devicewin)
delwin(devicewin);
devicewin = newwin((*active)->min_y, (*active)->min_x, 1, 0);
/* screen might have JSON on it from the init sequence */
(void)clearok(stdscr, true);
(void)clear();
if ((devicewin == NULL) || ((*active)->initialize != NULL && !(*active)->initialize())) {
monitor_complain("Internal initialization failure - screen "
"must be at least 80x24. Aborting.");
return false;
}
leftover = LINES - 1 - (*active)->min_y;
report_lock();
if (leftover <= 0) {
if (packetwin != NULL)
(void)delwin(packetwin);
packetwin = NULL;
} else if (packetwin == NULL) {
packetwin = newwin(leftover, COLS, (*active)->min_y + 1, 0);
(void)scrollok(packetwin, true);
(void)wsetscrreg(packetwin, 0, leftover - 1);
} else {
(void)wresize(packetwin, leftover, COLS);
(void)mvwin(packetwin, (*active)->min_y + 1, 0);
(void)wsetscrreg(packetwin, 0, leftover - 1);
}
report_unlock();
}
return true;
}
monitor_complain("No monitor matches %s.", devtype->type_name);
return false;
}
static void select_packet_monitor(struct gps_device_t *device)
{
static int last_type = BAD_PACKET;
/*
* Switch display types on packet receipt. Note, this *doesn't*
* change the selection of the current device driver; that's done
* within gpsd_multipoll() before this hook is called.
*/
if (device->lexer.type != last_type) {
const struct gps_type_t *active_type = device->device_type;
#ifdef NMEA0183_ENABLE
if (device->lexer.type == NMEA_PACKET
&& ((device->device_type->flags & DRIVER_STICKY) != 0))
active_type = &driver_nmea0183;
#endif /* NMEA0183_ENABLE */
if (!switch_type(active_type))
longjmp(terminate, TERM_DRIVER_SWITCH);
else {
refresh_statwin();
refresh_cmdwin();
}
last_type = device->lexer.type;
}
if (active != NULL
&& device->lexer.outbuflen > 0
&& (*active)->update != NULL)
(*active)->update();
if (devicewin != NULL)
(void)wnoutrefresh(devicewin);
}
/* Control-L character */
#define CTRL_L 0x0C
static char *curses_get_command(void)
/* char-by-char nonblocking input, return accumulated command line on \n */
{
static char input[80];
static char line[80];
int c;
c = wgetch(cmdwin);
if (CTRL_L == c) {
/* ^L is to repaint the screen */
(void)clearok(stdscr, true);
if (active != NULL && (*active)->initialize != NULL)
(void)(*active)->initialize();
} else if (c != '\r' && c != '\n') {
size_t len = strlen(input);
if (c == '\b' || c == KEY_LEFT || c == (int)erasechar()) {
input[len--] = '\0';
} else if (isprint(c)) {
input[len] = (char)c;
input[++len] = '\0';
(void)waddch(cmdwin, (chtype)c);
(void)wrefresh(cmdwin);
(void)doupdate();
}
return NULL;
}
(void)wmove(cmdwin, 0, (int)promptlen);
(void)wclrtoeol(cmdwin);
(void)wrefresh(cmdwin);
(void)doupdate();
/* user finished entering a command */
if (input[0] == '\0')
return NULL;
else {
(void) strlcpy(line, input, sizeof(line));
input[0] = '\0';
}
/* handle it in the currently selected monitor object if possible */
if (serial && active != NULL && (*active)->command != NULL) {
int status = (*active)->command(line);
if (status == COMMAND_TERMINATE)
longjmp(terminate, TERM_QUIT);
else if (status == COMMAND_MATCH)
return NULL;
assert(status == COMMAND_UNKNOWN);
}
return line;
}
/******************************************************************************
*
* Mode-independent I/O
*
* Below this line, all calls to curses-dependent functions are guarded
* by curses_active and have ttylike alternatives.
*
******************************************************************************/
#ifdef PPS_ENABLE
static void packet_log(const char *fmt, ...)
{
char buf[BUFSIZ];
va_list ap;
buf[0] = '\0';
va_start(ap, fmt);
packet_vlog(buf, sizeof(buf), fmt, ap);
va_end(ap);
}
#endif /* PPS_ENABLE */
static ssize_t gpsmon_serial_write(struct gps_device_t *session,
const char *buf,
const size_t len)
/* pass low-level data to devices, echoing it to the log window */
{
#if defined(CONTROLSEND_ENABLE) || defined(RECONFIGURE_ENABLE)
monitor_dump_send((const char *)buf, len);
#endif /* defined(CONTROLSEND_ENABLE) || defined(RECONFIGURE_ENABLE) */
return gpsd_serial_write(session, buf, len);
}
#ifdef CONTROLSEND_ENABLE
bool monitor_control_send( unsigned char *buf, size_t len)
{
if (!serial)
return false;
else {
ssize_t st;
context.readonly = false;
st = session.device_type->control_send(&session, (char *)buf, len);
context.readonly = true;
return (st != -1);
}
}
static bool monitor_raw_send( unsigned char *buf, size_t len)
{
ssize_t st = gpsd_write(&session, (char *)buf, len);
return (st > 0 && (size_t) st == len);
}
#endif /* CONTROLSEND_ENABLE */
static void complain(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (curses_active)
monitor_vcomplain(fmt, ap);
else {
(void)vfprintf(stderr, fmt, ap);
(void)fputc('\n', stderr);
}
va_end(ap);
}
/*****************************************************************************
*
* Main sequence
*
*****************************************************************************/
static void gpsmon_hook(struct gps_device_t *device, gps_mask_t changed UNUSED)
/* per-packet hook */
{
char buf[BUFSIZ];
/* FIXME: If the following condition is false, the display is screwed up. */
#if defined(SOCKET_EXPORT_ENABLE) && defined(PPS_DISPLAY_ENABLE)
if (!serial && str_starts_with((char*)device->lexer.outbuffer, "{\"class\":\"TOFF\",")) {
const char *end = NULL;
int status = json_toff_read((const char *)device->lexer.outbuffer,
&session.gpsdata,
&end);
if (status != 0) {
complain("Ill-formed TOFF packet: %d (%s)", status, json_error_string(status));
return;
} else {
if (!curses_active)
(void)fprintf(stderr,
"TOFF=%ld.%09ld real=%ld.%09ld\n",
(long)session.gpsdata.toff.clock.tv_sec,
(long)session.gpsdata.toff.clock.tv_nsec,
(long)session.gpsdata.toff.real.tv_sec,
(long)session.gpsdata.toff.real.tv_nsec);
#ifdef NTP_ENABLE
time_offset = session.gpsdata.toff;
#endif /* NTP_ENABLE */
return;
}
} else if (!serial && str_starts_with((char*)device->lexer.outbuffer, "{\"class\":\"PPS\",")) {
const char *end = NULL;
struct gps_data_t noclobber;
int status = json_pps_read((const char *)device->lexer.outbuffer,
&noclobber,
&end);
if (status != 0) {
complain("Ill-formed PPS packet: %d (%s)", status, json_error_string(status));
return;
} else {
struct timespec timedelta;
char timedelta_str[TIMESPEC_LEN];
TS_SUB( &timedelta, &noclobber.pps.clock, &noclobber.pps.real);
timespec_str( &timedelta, timedelta_str, sizeof(timedelta_str) );
if (!curses_active) {
char pps_clock_str[TIMESPEC_LEN];
char pps_real_str[TIMESPEC_LEN];
timespec_str( &noclobber.pps.clock, pps_clock_str,
sizeof(pps_clock_str) );
timespec_str( &noclobber.pps.real, pps_real_str,
sizeof(pps_real_str) );
(void)fprintf(stderr,
"PPS=%.20s clock=%.20s offset=%.20s\n",
pps_clock_str,
pps_real_str,
timedelta_str);
}
(void)snprintf(buf, sizeof(buf),
"------------------- PPS offset: %.20s ------\n",
timedelta_str);
/* FIXME: Decouple this from the pps_thread code. */
#ifdef PPS_ENABLE
/*
* In direct mode this would be a bad idea, but we're not actually
* watching for handshake events on a spawned thread here.
*/
/* coverity[missing_lock] */
session.pps_thread.pps_out = noclobber.pps;
/* coverity[missing_lock] */
session.pps_thread.ppsout_count++;
#endif /* PPS_ENABLE */
}
}
else
#endif /* SOCKET_EXPORT_ENABLE && PPS_DISPLAY_ENABLE */
{
#ifdef __future__
if (!serial)
{
if (device->lexer.type == JSON_PACKET)
{
const char *end = NULL;
libgps_json_unpack((char *)device->lexer.outbuffer, &session.gpsdata, &end);
}
}
#endif /* __future__ */
if (curses_active)
select_packet_monitor(device);
(void)snprintf(buf, sizeof(buf), "(%d) ",
(int)device->lexer.outbuflen);
cond_hexdump(buf + strlen(buf), sizeof(buf) - strlen(buf),
(char *)device->lexer.outbuffer,device->lexer.outbuflen);
(void)strlcat(buf, "\n", sizeof(buf));
}
report_lock();
if (!curses_active)
(void)fputs(buf, stdout);
else {
if (packetwin != NULL) {
(void)waddstr(packetwin, buf);
(void)wnoutrefresh(packetwin);
}
(void)doupdate();
}
if (logfile != NULL && device->lexer.outbuflen > 0) {
UNUSED size_t written_count = fwrite
(device->lexer.outbuffer, sizeof(char),
device->lexer.outbuflen, logfile);
assert(written_count >= 1);
}
report_unlock();
#ifdef NTP_ENABLE
/* Update the last fix time seen for PPS if we've actually seen one,
* and it is a new second. */
if ( 0 == isfinite(device->newdata.time)) {
// "NTP: bad new time
#if defined(PPS_ENABLE)
} else if (device->newdata.time <= device->pps_thread.fix_in.real.tv_sec) {
// "NTP: Not a new time
#endif /* PPS_ENABLE */
} else
ntp_latch(device, &time_offset);
#endif /* NTP_ENABLE */
}
static bool do_command(const char *line)
{
#ifdef RECONFIGURE_ENABLE
unsigned int v;
struct timespec delay;
#endif /* RECONFIGURE_ENABLE */
#ifdef CONTROLSEND_ENABLE
unsigned char buf[BUFLEN];
#endif /* CONTROLSEND_ENABLE */
const char *arg;
if (isspace((unsigned char) line[1])) {
for (arg = line + 2; *arg != '\0' && isspace((unsigned char) *arg); arg++)
arg++;
arg++;
} else
arg = line + 1;
switch (line[0]) {
#ifdef RECONFIGURE_ENABLE
case 'c': /* change cycle time */
if (session.device_type == NULL)
complain("No device defined yet");
else if (!serial)
complain("Only available in low-level mode.");
else {
double rate = strtod(arg, NULL);
const struct gps_type_t *switcher = session.device_type;
if (fallback != NULL && fallback->rate_switcher != NULL)
switcher = fallback;
if (switcher->rate_switcher != NULL) {
/* *INDENT-OFF* */
context.readonly = false;
if (switcher->rate_switcher(&session, rate)) {
announce_log("[Rate switcher called.]");
} else
complain("Rate not supported.");
context.readonly = true;
/* *INDENT-ON* */
} else
complain
("Device type %s has no rate switcher",
switcher->type_name);
}
#endif /* RECONFIGURE_ENABLE */
break;
case 'i': /* start probing for subtype */
if (session.device_type == NULL)
complain("No GPS type detected.");
else if (!serial)
complain("Only available in low-level mode.");
else {
if (strcspn(line, "01") == strlen(line))
context.readonly = !context.readonly;
else
context.readonly = (atoi(line + 1) == 0);
#ifdef RECONFIGURE_ENABLE
announce_log("[probing %sabled]", context.readonly ? "dis" : "en");
#endif /* RECONFIGURE_ENABLE */
if (!context.readonly)
/* magic - forces a reconfigure */
session.lexer.counter = 0;
}
break;
case 'l': /* open logfile */
report_lock();
if (logfile != NULL) {
if (packetwin != NULL)
(void)wprintw(packetwin,
">>> Logging off\n");
(void)fclose(logfile);
}
if ((logfile = fopen(line + 1, "a")) != NULL)
if (packetwin != NULL)
(void)wprintw(packetwin,
">>> Logging to %s\n", line + 1);
report_unlock();
break;
#ifdef RECONFIGURE_ENABLE
case 'n': /* change mode */
/* if argument not specified, toggle */
if (strcspn(line, "01") == strlen(line)) {
/* *INDENT-OFF* */
v = (unsigned int)TEXTUAL_PACKET_TYPE(
session.lexer.type);
/* *INDENT-ON* */
} else
v = (unsigned)atoi(line + 1);
if (session.device_type == NULL)
complain("No device defined yet");
else if (!serial)
complain("Only available in low-level mode.");
else {
const struct gps_type_t *switcher = session.device_type;
if (fallback != NULL && fallback->mode_switcher != NULL)
switcher = fallback;
if (switcher->mode_switcher != NULL) {
context.readonly = false;
announce_log("[Mode switcher to mode %d]", v);
switcher->mode_switcher(&session, (int)v);
context.readonly = true;
(void)tcdrain(session.gpsdata.gps_fd);
/* wait 50,000 uSec */
delay.tv_sec = 0;
delay.tv_nsec = 50000000L;
nanosleep(&delay, NULL);
/*
* Session device change will be set to NMEA when
* gpsmon resyncs. So stash the current type to
* be restored if we do 'n' from NMEA mode.
*/
if (v == 0)
fallback = switcher;
} else
complain
("Device type %s has no mode switcher",
switcher->type_name);
}
break;
#endif /* RECONFIGURE_ENABLE */
case 'q': /* quit */