forked from aosp-mirror/platform_system_core
-
Notifications
You must be signed in to change notification settings - Fork 10
/
logprint.c
1884 lines (1714 loc) · 53.1 KB
/
logprint.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
/*
**
** Copyright 2006-2014, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#define _GNU_SOURCE /* for asprintf */
#ifndef __MINGW32__
#define HAVE_STRSEP
#endif
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#ifndef __MINGW32__
#include <pwd.h>
#endif
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <sys/types.h>
#include <cutils/list.h>
#include <log/log.h>
#include <log/logprint.h>
#include "log_portability.h"
#define MS_PER_NSEC 1000000
#define US_PER_NSEC 1000
#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
typedef struct FilterInfo_t {
char* mTag;
android_LogPriority mPri;
struct FilterInfo_t* p_next;
} FilterInfo;
struct AndroidLogFormat_t {
android_LogPriority global_pri;
FilterInfo* filters;
AndroidLogPrintFormat format;
bool colored_output;
bool usec_time_output;
bool nsec_time_output;
bool printable_output;
bool year_output;
bool zone_output;
bool epoch_output;
bool monotonic_output;
bool uid_output;
bool descriptive_output;
};
/*
* API issues prevent us from exposing "descriptive" in AndroidLogFormat_t
* during android_log_processBinaryLogBuffer(), so we break layering.
*/
static bool descriptive_output = false;
/*
* gnome-terminal color tags
* See http://misc.flogisoft.com/bash/tip_colors_and_formatting
* for ideas on how to set the forground color of the text for xterm.
* The color manipulation character stream is defined as:
* ESC [ 3 8 ; 5 ; <color#> m
*/
#define ANDROID_COLOR_BLUE 75
#define ANDROID_COLOR_DEFAULT 231
#define ANDROID_COLOR_GREEN 40
#define ANDROID_COLOR_ORANGE 166
#define ANDROID_COLOR_RED 196
#define ANDROID_COLOR_YELLOW 226
static FilterInfo* filterinfo_new(const char* tag, android_LogPriority pri) {
FilterInfo* p_ret;
p_ret = (FilterInfo*)calloc(1, sizeof(FilterInfo));
p_ret->mTag = strdup(tag);
p_ret->mPri = pri;
return p_ret;
}
/* balance to above, filterinfo_free left unimplemented */
/*
* Note: also accepts 0-9 priorities
* returns ANDROID_LOG_UNKNOWN if the character is unrecognized
*/
static android_LogPriority filterCharToPri(char c) {
android_LogPriority pri;
c = tolower(c);
if (c >= '0' && c <= '9') {
if (c >= ('0' + ANDROID_LOG_SILENT)) {
pri = ANDROID_LOG_VERBOSE;
} else {
pri = (android_LogPriority)(c - '0');
}
} else if (c == 'v') {
pri = ANDROID_LOG_VERBOSE;
} else if (c == 'd') {
pri = ANDROID_LOG_DEBUG;
} else if (c == 'i') {
pri = ANDROID_LOG_INFO;
} else if (c == 'w') {
pri = ANDROID_LOG_WARN;
} else if (c == 'e') {
pri = ANDROID_LOG_ERROR;
} else if (c == 'f') {
pri = ANDROID_LOG_FATAL;
} else if (c == 's') {
pri = ANDROID_LOG_SILENT;
} else if (c == '*') {
pri = ANDROID_LOG_DEFAULT;
} else {
pri = ANDROID_LOG_UNKNOWN;
}
return pri;
}
static char filterPriToChar(android_LogPriority pri) {
switch (pri) {
/* clang-format off */
case ANDROID_LOG_VERBOSE: return 'V';
case ANDROID_LOG_DEBUG: return 'D';
case ANDROID_LOG_INFO: return 'I';
case ANDROID_LOG_WARN: return 'W';
case ANDROID_LOG_ERROR: return 'E';
case ANDROID_LOG_FATAL: return 'F';
case ANDROID_LOG_SILENT: return 'S';
case ANDROID_LOG_DEFAULT:
case ANDROID_LOG_UNKNOWN:
default: return '?';
/* clang-format on */
}
}
static int colorFromPri(android_LogPriority pri) {
switch (pri) {
/* clang-format off */
case ANDROID_LOG_VERBOSE: return ANDROID_COLOR_DEFAULT;
case ANDROID_LOG_DEBUG: return ANDROID_COLOR_BLUE;
case ANDROID_LOG_INFO: return ANDROID_COLOR_GREEN;
case ANDROID_LOG_WARN: return ANDROID_COLOR_ORANGE;
case ANDROID_LOG_ERROR: return ANDROID_COLOR_RED;
case ANDROID_LOG_FATAL: return ANDROID_COLOR_RED;
case ANDROID_LOG_SILENT: return ANDROID_COLOR_DEFAULT;
case ANDROID_LOG_DEFAULT:
case ANDROID_LOG_UNKNOWN:
default: return ANDROID_COLOR_DEFAULT;
/* clang-format on */
}
}
static android_LogPriority filterPriForTag(AndroidLogFormat* p_format,
const char* tag) {
FilterInfo* p_curFilter;
for (p_curFilter = p_format->filters; p_curFilter != NULL;
p_curFilter = p_curFilter->p_next) {
if (0 == strcmp(tag, p_curFilter->mTag)) {
if (p_curFilter->mPri == ANDROID_LOG_DEFAULT) {
return p_format->global_pri;
} else {
return p_curFilter->mPri;
}
}
}
return p_format->global_pri;
}
/**
* returns 1 if this log line should be printed based on its priority
* and tag, and 0 if it should not
*/
LIBLOG_ABI_PUBLIC int android_log_shouldPrintLine(AndroidLogFormat* p_format,
const char* tag,
android_LogPriority pri) {
return pri >= filterPriForTag(p_format, tag);
}
LIBLOG_ABI_PUBLIC AndroidLogFormat* android_log_format_new() {
AndroidLogFormat* p_ret;
p_ret = calloc(1, sizeof(AndroidLogFormat));
p_ret->global_pri = ANDROID_LOG_VERBOSE;
p_ret->format = FORMAT_BRIEF;
p_ret->colored_output = false;
p_ret->usec_time_output = false;
p_ret->nsec_time_output = false;
p_ret->printable_output = false;
p_ret->year_output = false;
p_ret->zone_output = false;
p_ret->epoch_output = false;
#ifdef __ANDROID__
p_ret->monotonic_output = android_log_clockid() == CLOCK_MONOTONIC;
#else
p_ret->monotonic_output = false;
#endif
p_ret->uid_output = false;
p_ret->descriptive_output = false;
descriptive_output = false;
return p_ret;
}
static list_declare(convertHead);
LIBLOG_ABI_PUBLIC void android_log_format_free(AndroidLogFormat* p_format) {
FilterInfo *p_info, *p_info_old;
p_info = p_format->filters;
while (p_info != NULL) {
p_info_old = p_info;
p_info = p_info->p_next;
free(p_info_old);
}
free(p_format);
/* Free conversion resource, can always be reconstructed */
while (!list_empty(&convertHead)) {
struct listnode* node = list_head(&convertHead);
list_remove(node);
LOG_ALWAYS_FATAL_IF(node == list_head(&convertHead), "corrupted list");
free(node);
}
}
LIBLOG_ABI_PUBLIC int android_log_setPrintFormat(AndroidLogFormat* p_format,
AndroidLogPrintFormat format) {
switch (format) {
case FORMAT_MODIFIER_COLOR:
p_format->colored_output = true;
return 0;
case FORMAT_MODIFIER_TIME_USEC:
p_format->usec_time_output = true;
return 0;
case FORMAT_MODIFIER_TIME_NSEC:
p_format->nsec_time_output = true;
return 0;
case FORMAT_MODIFIER_PRINTABLE:
p_format->printable_output = true;
return 0;
case FORMAT_MODIFIER_YEAR:
p_format->year_output = true;
return 0;
case FORMAT_MODIFIER_ZONE:
p_format->zone_output = !p_format->zone_output;
return 0;
case FORMAT_MODIFIER_EPOCH:
p_format->epoch_output = true;
return 0;
case FORMAT_MODIFIER_MONOTONIC:
p_format->monotonic_output = true;
return 0;
case FORMAT_MODIFIER_UID:
p_format->uid_output = true;
return 0;
case FORMAT_MODIFIER_DESCRIPT:
p_format->descriptive_output = true;
descriptive_output = true;
return 0;
default:
break;
}
p_format->format = format;
return 1;
}
static const char tz[] = "TZ";
static const char utc[] = "UTC";
/**
* Returns FORMAT_OFF on invalid string
*/
LIBLOG_ABI_PUBLIC AndroidLogPrintFormat
android_log_formatFromString(const char* formatString) {
static AndroidLogPrintFormat format;
/* clang-format off */
if (!strcmp(formatString, "brief")) format = FORMAT_BRIEF;
else if (!strcmp(formatString, "process")) format = FORMAT_PROCESS;
else if (!strcmp(formatString, "tag")) format = FORMAT_TAG;
else if (!strcmp(formatString, "thread")) format = FORMAT_THREAD;
else if (!strcmp(formatString, "raw")) format = FORMAT_RAW;
else if (!strcmp(formatString, "time")) format = FORMAT_TIME;
else if (!strcmp(formatString, "threadtime")) format = FORMAT_THREADTIME;
else if (!strcmp(formatString, "long")) format = FORMAT_LONG;
else if (!strcmp(formatString, "color")) format = FORMAT_MODIFIER_COLOR;
else if (!strcmp(formatString, "colour")) format = FORMAT_MODIFIER_COLOR;
else if (!strcmp(formatString, "usec")) format = FORMAT_MODIFIER_TIME_USEC;
else if (!strcmp(formatString, "nsec")) format = FORMAT_MODIFIER_TIME_NSEC;
else if (!strcmp(formatString, "printable")) format = FORMAT_MODIFIER_PRINTABLE;
else if (!strcmp(formatString, "year")) format = FORMAT_MODIFIER_YEAR;
else if (!strcmp(formatString, "zone")) format = FORMAT_MODIFIER_ZONE;
else if (!strcmp(formatString, "epoch")) format = FORMAT_MODIFIER_EPOCH;
else if (!strcmp(formatString, "monotonic")) format = FORMAT_MODIFIER_MONOTONIC;
else if (!strcmp(formatString, "uid")) format = FORMAT_MODIFIER_UID;
else if (!strcmp(formatString, "descriptive")) format = FORMAT_MODIFIER_DESCRIPT;
/* clang-format on */
#ifndef __MINGW32__
else {
extern char* tzname[2];
static const char gmt[] = "GMT";
char* cp = getenv(tz);
if (cp) {
cp = strdup(cp);
}
setenv(tz, formatString, 1);
/*
* Run tzset here to determine if the timezone is legitimate. If the
* zone is GMT, check if that is what was asked for, if not then
* did not match any on the system; report an error to caller.
*/
tzset();
if (!tzname[0] ||
((!strcmp(tzname[0], utc) || !strcmp(tzname[0], gmt)) /* error? */
&& strcasecmp(formatString, utc) &&
strcasecmp(formatString, gmt))) { /* ok */
if (cp) {
setenv(tz, cp, 1);
} else {
unsetenv(tz);
}
tzset();
format = FORMAT_OFF;
} else {
format = FORMAT_MODIFIER_ZONE;
}
free(cp);
}
#endif
return format;
}
/**
* filterExpression: a single filter expression
* eg "AT:d"
*
* returns 0 on success and -1 on invalid expression
*
* Assumes single threaded execution
*/
LIBLOG_ABI_PUBLIC int android_log_addFilterRule(AndroidLogFormat* p_format,
const char* filterExpression) {
size_t tagNameLength;
android_LogPriority pri = ANDROID_LOG_DEFAULT;
tagNameLength = strcspn(filterExpression, ":");
if (tagNameLength == 0) {
goto error;
}
if (filterExpression[tagNameLength] == ':') {
pri = filterCharToPri(filterExpression[tagNameLength + 1]);
if (pri == ANDROID_LOG_UNKNOWN) {
goto error;
}
}
if (0 == strncmp("*", filterExpression, tagNameLength)) {
/*
* This filter expression refers to the global filter
* The default level for this is DEBUG if the priority
* is unspecified
*/
if (pri == ANDROID_LOG_DEFAULT) {
pri = ANDROID_LOG_DEBUG;
}
p_format->global_pri = pri;
} else {
/*
* for filter expressions that don't refer to the global
* filter, the default is verbose if the priority is unspecified
*/
if (pri == ANDROID_LOG_DEFAULT) {
pri = ANDROID_LOG_VERBOSE;
}
char* tagName;
/*
* Presently HAVE_STRNDUP is never defined, so the second case is always taken
* Darwin doesn't have strndup, everything else does
*/
#ifdef HAVE_STRNDUP
tagName = strndup(filterExpression, tagNameLength);
#else
/* a few extra bytes copied... */
tagName = strdup(filterExpression);
tagName[tagNameLength] = '\0';
#endif /*HAVE_STRNDUP*/
FilterInfo* p_fi = filterinfo_new(tagName, pri);
free(tagName);
p_fi->p_next = p_format->filters;
p_format->filters = p_fi;
}
return 0;
error:
return -1;
}
#ifndef HAVE_STRSEP
/* KISS replacement helper for below */
static char* strsep(char** stringp, const char* delim) {
char* token;
char* ret = *stringp;
if (!ret || !*ret) {
return NULL;
}
token = strpbrk(ret, delim);
if (token) {
*token = '\0';
++token;
} else {
token = ret + strlen(ret);
}
*stringp = token;
return ret;
}
#endif
/**
* filterString: a comma/whitespace-separated set of filter expressions
*
* eg "AT:d *:i"
*
* returns 0 on success and -1 on invalid expression
*
* Assumes single threaded execution
*
*/
LIBLOG_ABI_PUBLIC int android_log_addFilterString(AndroidLogFormat* p_format,
const char* filterString) {
char* filterStringCopy = strdup(filterString);
char* p_cur = filterStringCopy;
char* p_ret;
int err;
/* Yes, I'm using strsep */
while (NULL != (p_ret = strsep(&p_cur, " \t,"))) {
/* ignore whitespace-only entries */
if (p_ret[0] != '\0') {
err = android_log_addFilterRule(p_format, p_ret);
if (err < 0) {
goto error;
}
}
}
free(filterStringCopy);
return 0;
error:
free(filterStringCopy);
return -1;
}
/**
* Splits a wire-format buffer into an AndroidLogEntry
* entry allocated by caller. Pointers will point directly into buf
*
* Returns 0 on success and -1 on invalid wire format (entry will be
* in unspecified state)
*/
LIBLOG_ABI_PUBLIC int android_log_processLogBuffer(struct logger_entry* buf,
AndroidLogEntry* entry) {
entry->message = NULL;
entry->messageLen = 0;
entry->tv_sec = buf->sec;
entry->tv_nsec = buf->nsec;
entry->uid = -1;
entry->pid = buf->pid;
entry->tid = buf->tid;
/*
* format: <priority:1><tag:N>\0<message:N>\0
*
* tag str
* starts at buf->msg+1
* msg
* starts at buf->msg+1+len(tag)+1
*
* The message may have been truncated by the kernel log driver.
* When that happens, we must null-terminate the message ourselves.
*/
if (buf->len < 3) {
/*
* An well-formed entry must consist of at least a priority
* and two null characters
*/
fprintf(stderr, "+++ LOG: entry too small\n");
return -1;
}
int msgStart = -1;
int msgEnd = -1;
int i;
char* msg = buf->msg;
struct logger_entry_v2* buf2 = (struct logger_entry_v2*)buf;
if (buf2->hdr_size) {
if ((buf2->hdr_size < sizeof(((struct log_msg*)NULL)->entry_v1)) ||
(buf2->hdr_size > sizeof(((struct log_msg*)NULL)->entry))) {
fprintf(stderr, "+++ LOG: entry illegal hdr_size\n");
return -1;
}
msg = ((char*)buf2) + buf2->hdr_size;
if (buf2->hdr_size >= sizeof(struct logger_entry_v4)) {
entry->uid = ((struct logger_entry_v4*)buf)->uid;
}
}
for (i = 1; i < buf->len; i++) {
if (msg[i] == '\0') {
if (msgStart == -1) {
msgStart = i + 1;
} else {
msgEnd = i;
break;
}
}
}
if (msgStart == -1) {
/* +++ LOG: malformed log message, DYB */
for (i = 1; i < buf->len; i++) {
/* odd characters in tag? */
if ((msg[i] <= ' ') || (msg[i] == ':') || (msg[i] >= 0x7f)) {
msg[i] = '\0';
msgStart = i + 1;
break;
}
}
if (msgStart == -1) {
msgStart = buf->len - 1; /* All tag, no message, print truncates */
}
}
if (msgEnd == -1) {
/* incoming message not null-terminated; force it */
msgEnd = buf->len - 1; /* may result in msgEnd < msgStart */
msg[msgEnd] = '\0';
}
entry->priority = msg[0];
entry->tag = msg + 1;
entry->tagLen = msgStart - 1;
entry->message = msg + msgStart;
entry->messageLen = (msgEnd < msgStart) ? 0 : (msgEnd - msgStart);
return 0;
}
/*
* Extract a 4-byte value from a byte stream.
*/
static inline uint32_t get4LE(const uint8_t* src) {
return src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
}
/*
* Extract an 8-byte value from a byte stream.
*/
static inline uint64_t get8LE(const uint8_t* src) {
uint32_t low, high;
low = src[0] | (src[1] << 8) | (src[2] << 16) | (src[3] << 24);
high = src[4] | (src[5] << 8) | (src[6] << 16) | (src[7] << 24);
return ((uint64_t)high << 32) | (uint64_t)low;
}
static bool findChar(const char** cp, size_t* len, int c) {
while ((*len) && isspace(*(*cp))) {
++(*cp);
--(*len);
}
if (c == INT_MAX) return *len;
if ((*len) && (*(*cp) == c)) {
++(*cp);
--(*len);
return true;
}
return false;
}
/*
* Recursively convert binary log data to printable form.
*
* This needs to be recursive because you can have lists of lists.
*
* If we run out of room, we stop processing immediately. It's important
* for us to check for space on every output element to avoid producing
* garbled output.
*
* Returns 0 on success, 1 on buffer full, -1 on failure.
*/
enum objectType {
TYPE_OBJECTS = '1',
TYPE_BYTES = '2',
TYPE_MILLISECONDS = '3',
TYPE_ALLOCATIONS = '4',
TYPE_ID = '5',
TYPE_PERCENT = '6',
TYPE_MONOTONIC = 's'
};
static int android_log_printBinaryEvent(const unsigned char** pEventData,
size_t* pEventDataLen, char** pOutBuf,
size_t* pOutBufLen, const char** fmtStr,
size_t* fmtLen) {
const unsigned char* eventData = *pEventData;
size_t eventDataLen = *pEventDataLen;
char* outBuf = *pOutBuf;
char* outBufSave = outBuf;
size_t outBufLen = *pOutBufLen;
size_t outBufLenSave = outBufLen;
unsigned char type;
size_t outCount = 0;
int result = 0;
const char* cp;
size_t len;
int64_t lval;
if (eventDataLen < 1) return -1;
type = *eventData++;
eventDataLen--;
cp = NULL;
len = 0;
if (fmtStr && *fmtStr && fmtLen && *fmtLen && **fmtStr) {
cp = *fmtStr;
len = *fmtLen;
}
/*
* event.logtag format specification:
*
* Optionally, after the tag names can be put a description for the value(s)
* of the tag. Description are in the format
* (<name>|data type[|data unit])
* Multiple values are separated by commas.
*
* The data type is a number from the following values:
* 1: int
* 2: long
* 3: string
* 4: list
* 5: float
*
* The data unit is a number taken from the following list:
* 1: Number of objects
* 2: Number of bytes
* 3: Number of milliseconds
* 4: Number of allocations
* 5: Id
* 6: Percent
* s: Number of seconds (monotonic time)
* Default value for data of type int/long is 2 (bytes).
*/
if (!cp || !findChar(&cp, &len, '(')) {
len = 0;
} else {
char* outBufLastSpace = NULL;
findChar(&cp, &len, INT_MAX);
while (len && *cp && (*cp != '|') && (*cp != ')')) {
if (outBufLen <= 0) {
/* halt output */
goto no_room;
}
outBufLastSpace = isspace(*cp) ? outBuf : NULL;
*outBuf = *cp;
++outBuf;
++cp;
--outBufLen;
--len;
}
if (outBufLastSpace) {
outBufLen += outBuf - outBufLastSpace;
outBuf = outBufLastSpace;
}
if (outBufLen <= 0) {
/* halt output */
goto no_room;
}
if (outBufSave != outBuf) {
*outBuf = '=';
++outBuf;
--outBufLen;
}
if (findChar(&cp, &len, '|') && findChar(&cp, &len, INT_MAX)) {
static const unsigned char typeTable[] = {
EVENT_TYPE_INT, EVENT_TYPE_LONG, EVENT_TYPE_STRING, EVENT_TYPE_LIST,
EVENT_TYPE_FLOAT
};
if ((*cp >= '1') &&
(*cp < (char)('1' + (sizeof(typeTable) / sizeof(typeTable[0])))) &&
(type != typeTable[(size_t)(*cp - '1')]))
len = 0;
if (len) {
++cp;
--len;
} else {
/* reset the format */
outBuf = outBufSave;
outBufLen = outBufLenSave;
}
}
}
outCount = 0;
lval = 0;
switch (type) {
case EVENT_TYPE_INT:
/* 32-bit signed int */
{
int32_t ival;
if (eventDataLen < 4) return -1;
ival = get4LE(eventData);
eventData += 4;
eventDataLen -= 4;
lval = ival;
}
goto pr_lval;
case EVENT_TYPE_LONG:
/* 64-bit signed long */
if (eventDataLen < 8) return -1;
lval = get8LE(eventData);
eventData += 8;
eventDataLen -= 8;
pr_lval:
outCount = snprintf(outBuf, outBufLen, "%" PRId64, lval);
if (outCount < outBufLen) {
outBuf += outCount;
outBufLen -= outCount;
} else {
/* halt output */
goto no_room;
}
break;
case EVENT_TYPE_FLOAT:
/* float */
{
uint32_t ival;
float fval;
if (eventDataLen < 4) return -1;
ival = get4LE(eventData);
fval = *(float*)&ival;
eventData += 4;
eventDataLen -= 4;
outCount = snprintf(outBuf, outBufLen, "%f", fval);
if (outCount < outBufLen) {
outBuf += outCount;
outBufLen -= outCount;
} else {
/* halt output */
goto no_room;
}
}
break;
case EVENT_TYPE_STRING:
/* UTF-8 chars, not NULL-terminated */
{
unsigned int strLen;
if (eventDataLen < 4) return -1;
strLen = get4LE(eventData);
eventData += 4;
eventDataLen -= 4;
if (eventDataLen < strLen) {
result = -1; /* mark truncated */
strLen = eventDataLen;
}
if (cp && (strLen == 0)) {
/* reset the format if no content */
outBuf = outBufSave;
outBufLen = outBufLenSave;
}
if (strLen < outBufLen) {
memcpy(outBuf, eventData, strLen);
outBuf += strLen;
outBufLen -= strLen;
} else {
if (outBufLen > 0) {
/* copy what we can */
memcpy(outBuf, eventData, outBufLen);
outBuf += outBufLen;
outBufLen -= outBufLen;
}
if (!result) result = 1; /* if not truncated, return no room */
}
eventData += strLen;
eventDataLen -= strLen;
if (result != 0) goto bail;
break;
}
case EVENT_TYPE_LIST:
/* N items, all different types */
{
unsigned char count;
int i;
if (eventDataLen < 1) return -1;
count = *eventData++;
eventDataLen--;
if (outBufLen <= 0) goto no_room;
*outBuf++ = '[';
outBufLen--;
for (i = 0; i < count; i++) {
result = android_log_printBinaryEvent(
&eventData, &eventDataLen, &outBuf, &outBufLen, fmtStr, fmtLen);
if (result != 0) goto bail;
if (i < (count - 1)) {
if (outBufLen <= 0) goto no_room;
*outBuf++ = ',';
outBufLen--;
}
}
if (outBufLen <= 0) goto no_room;
*outBuf++ = ']';
outBufLen--;
}
break;
default:
fprintf(stderr, "Unknown binary event type %d\n", type);
return -1;
}
if (cp && len) {
if (findChar(&cp, &len, '|') && findChar(&cp, &len, INT_MAX)) {
switch (*cp) {
case TYPE_OBJECTS:
outCount = 0;
/* outCount = snprintf(outBuf, outBufLen, " objects"); */
break;
case TYPE_BYTES:
if ((lval != 0) && ((lval % 1024) == 0)) {
/* repaint with multiplier */
static const char suffixTable[] = { 'K', 'M', 'G', 'T' };
size_t idx = 0;
outBuf -= outCount;
outBufLen += outCount;
do {
lval /= 1024;
if ((lval % 1024) != 0) break;
} while (++idx <
((sizeof(suffixTable) / sizeof(suffixTable[0])) - 1));
outCount = snprintf(outBuf, outBufLen, "%" PRId64 "%cB", lval,
suffixTable[idx]);
} else {
outCount = snprintf(outBuf, outBufLen, "B");
}
break;
case TYPE_MILLISECONDS:
if (((lval <= -1000) || (1000 <= lval)) &&
(outBufLen || (outBuf[-1] == '0'))) {
/* repaint as (fractional) seconds, possibly saving space */
if (outBufLen) outBuf[0] = outBuf[-1];
outBuf[-1] = outBuf[-2];
outBuf[-2] = outBuf[-3];
outBuf[-3] = '.';
while ((outBufLen == 0) || (*outBuf == '0')) {
--outBuf;
++outBufLen;
}
if (*outBuf != '.') {
++outBuf;
--outBufLen;
}
outCount = snprintf(outBuf, outBufLen, "s");
} else {
outCount = snprintf(outBuf, outBufLen, "ms");
}
break;
case TYPE_MONOTONIC: {
static const uint64_t minute = 60;
static const uint64_t hour = 60 * minute;
static const uint64_t day = 24 * hour;
/* Repaint as unsigned seconds, minutes, hours ... */
outBuf -= outCount;
outBufLen += outCount;
uint64_t val = lval;
if (val >= day) {
outCount = snprintf(outBuf, outBufLen, "%" PRIu64 "d ", val / day);
if (outCount >= outBufLen) break;
outBuf += outCount;
outBufLen -= outCount;
val = (val % day) + day;
}
if (val >= minute) {
if (val >= hour) {
outCount = snprintf(outBuf, outBufLen, "%" PRIu64 ":",
(val / hour) % (day / hour));
if (outCount >= outBufLen) break;
outBuf += outCount;
outBufLen -= outCount;
}
outCount =
snprintf(outBuf, outBufLen,
(val >= hour) ? "%02" PRIu64 ":" : "%" PRIu64 ":",
(val / minute) % (hour / minute));
if (outCount >= outBufLen) break;
outBuf += outCount;
outBufLen -= outCount;
}
outCount = snprintf(outBuf, outBufLen,
(val >= minute) ? "%02" PRIu64 : "%" PRIu64 "s",
val % minute);
} break;
case TYPE_ALLOCATIONS:
outCount = 0;
/* outCount = snprintf(outBuf, outBufLen, " allocations"); */
break;
case TYPE_ID:
outCount = 0;
break;
case TYPE_PERCENT:
outCount = snprintf(outBuf, outBufLen, "%%");
break;
default: /* ? */
outCount = 0;
break;
}
++cp;
--len;
if (outCount < outBufLen) {
outBuf += outCount;
outBufLen -= outCount;
} else if (outCount) {
/* halt output */
goto no_room;
}
}
if (!findChar(&cp, &len, ')')) len = 0;
if (!findChar(&cp, &len, ',')) len = 0;
}
bail:
*pEventData = eventData;
*pEventDataLen = eventDataLen;
*pOutBuf = outBuf;
*pOutBufLen = outBufLen;
if (cp) {
*fmtStr = cp;
*fmtLen = len;
}