forked from twindb/undrop-for-innodb
-
Notifications
You must be signed in to change notification settings - Fork 0
/
c_parser.c
1065 lines (945 loc) · 31.9 KB
/
c_parser.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
//#include "decompress/decompressl.h"
#include <stdio.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <time.h>
#include <string.h>
#include <sys/dir.h>
//#include <error.h>
#include "tables_dict.h"
#include <print_data.h>
#include <check_data.h>
#include <dirent.h>
#include <decimal.h>
#include <m_ctype.h>
//#include <decimal.c>
//#include <ctype-latin1.c>
//#include <ctype-utf8.c>
//#include <my_strtoll10.c>
//#include <strend.c>
//#include <ctype-simple.c>
//#include <my_vsnprintf.c>
#include <bchange.c>
#include <bcmp.c>
#include <bfill.c>
#include <bmove512.c>
#include <bmove.c>
#include <bmove_upp.c>
#include <ctype-bin.c>
#include <ctype.c>
#include <ctype-latin1.c>
#include <ctype-mb.c>
#include <ctype-simple.c>
#include <ctype-utf8.c>
#include <decimal.c>
#include <int2str.c>
#include <is_prefix.c>
#include <llstr.c>
#include <longlong2str.c>
#include <my_strtoll10.c>
#include <my_vsnprintf.c>
#include <r_strinstr.c>
#include <str2int.c>
#include <str_alloc.c>
#include <strappend.c>
#include <strcend.c>
#include <strcont.c>
#include <strend.c>
#include <strfill.c>
#include <strinstr.c>
#include <strmake.c>
#include <strmov.c>
#include <strnlen.c>
#include <strnmov.c>
#include <strstr.c>
#include <strtod.c>
#include <strtol.c>
#include <strtoll.c>
#include <strtoul.c>
#include <strtoull.c>
#include <strxmov.c>
#include <strxnmov.c>
#include <xml.c>
#define DIG_MASK 100000000
#define DIG_MAX (DIG_BASE-1)
#define DIG_BASE 1000000000
// Global flags from getopt
int compressed_pages = 0;
bool deleted_pages_only = 0;
bool deleted_records_only = 0;
bool undeleted_records_only = 1;
bool debug = 0;
//bool process_redundant = 0;
//bool process_compact = 0;
bool process_56 = 0;
bool output_sql_inserts = 0;
char blob_dir[256] = ".";
char dump_prefix[256] = "default";
char path_ibdata[256];
bool external_in_ibdata = 0;
int last_id = 0;
dulint filter_id;
int use_filter_id = 0;
FILE* f_result;
FILE* f_sql;
extern int load_table(char*);
inline void error(char *msg) {
fprintf(stderr, "Error: %s\n", msg);
exit(1);
}
/* Recovery status counter */
unsigned long records_expected_total = 0;
unsigned long records_dumped_total = 0;
int records_lost = 0;
/*****************************************************************
* Prints the contents of a memory buffer in hex and ascii. */
void
ut_print_buf(
/*=========*/
FILE* file, /* in: file where to print */
const byte* buf, /* in: memory buffer */
ulint len) /* in: length of the buffer */
{
const byte* data;
ulint i;
fprintf(file, " len %lu; hex ", len);
for (data = buf, i = 0; i < len; i++) {
fprintf(file, "%02lx", (ulong)*data++);
}
fputs("; asc ", file);
data = buf;
for (i = 0; i < len; i++) {
int c = (int) *data++;
putc(isprint(c) ? c : ' ', file);
}
putc(';', file);
}
/*******************************************************************/
ulint process_ibrec(page_t *page, rec_t *rec, table_def_t *table, ulint *offsets, bool hex) {
ulint data_size;
int i;
if (!output_sql_inserts) {
// Print trx_id and rollback pointer
for(i = 0; i < table->fields_count; i++) {
ulint len;
byte *field = rec_get_nth_field(rec, offsets, i, &len);
if (table->fields[i].type == FT_INTERNAL){
if (debug) printf("Field #%i @ %p: length %lu, value: ", i, field, len);
print_field_value(field, len, &(table->fields[i]), hex);
if (i < table->fields_count - 1) fprintf(f_result, "\t");
if (debug) printf("\n");
}
}
}
data_size = rec_offs_data_size(offsets);
// Only print certain IDs
/*if (table->fields_count > 3) {
ulint len;
byte *second_field = rec_get_nth_field(rec, offsets, 3, &len);
int id = get_int_value( &(table->fields[3]),second_field);
if (last_id != id) {
printf ("Processing ID_CR = %i \n",id);
last_id = id;
}
if (! (id > 6647709 && id < 6663938)) {
return data_size;
}
}*/
// Print table name
if (debug) {
printf("Processing record %p from table '%s'\n", rec, table->name);
rec_print_new(stdout, rec, offsets);
} else if (output_sql_inserts) {
fprintf(f_result, "INSERT INTO `%s` VALUES(", table->name);
} else {
fprintf(f_result, "%s\t", table->name);
}
for(i = 0; i < table->fields_count; i++) {
ulint len;
byte *field = rec_get_nth_field(rec, offsets, i, &len);
if (table->fields[i].type == FT_INTERNAL) continue;
if (debug) printf("Field #%i @ %p: length %lu, value: ", i, field, len);
if (len == UNIV_SQL_NULL) {
fprintf(f_result, "NULL");
} else {
if (rec_offs_nth_extern(offsets, i)) {
print_field_value_with_external(field, len, &(table->fields[i]), hex);
} else {
print_field_value(field, len, &(table->fields[i]), hex);
}
}
if (i < table->fields_count - 1) {
if (output_sql_inserts) fprintf(f_result, ",");
else fprintf(f_result, "\t");
}
if (debug) printf("\n");
}
if (output_sql_inserts)
fprintf(f_result, ");");
fprintf(f_result, "\n");
return data_size; // point to the next possible record's start
}
/*******************************************************************/
inline ibool check_constraints(rec_t *rec, table_def_t* table, ulint* offsets) {
int i;
ulint len_sum = 0;
if (debug) {
printf("\nChecking constraints for a row (%s) at %p:", table->name, rec);
ut_print_buf(stdout, rec, 100);
}
// Check every field
for(i = 0; i < table->fields_count; i++) {
// Get field value pointer and field length
ulint len;
byte *field = rec_get_nth_field(rec, offsets, i, &len);
if (debug) printf("\n - field %s(addr = %p, len = %lu):", table->fields[i].name, field, len);
if (len != UNIV_SQL_NULL) {
len_sum += len;
}
else {
if (!rec_offs_comp(offsets)) {
len_sum += rec_get_nth_field_size(rec, i);
}
}
// Skip null fields from type checks and fail if null is not allowed by data limits
if (len == UNIV_SQL_NULL) {
if (table->fields[i].has_limits && !table->fields[i].limits.can_be_null) {
if (debug) printf("data can't be NULL");
return FALSE;
}
continue;
}
// Check limits
if (!table->fields[i].has_limits) continue;
if (!check_field_limits(&(table->fields[i]), field, len)) {
if (debug) printf("LIMITS check failed(field = %p, len = %ld)!\n", field, len);
return FALSE;
}
}
// Why do we need this check?
/*
if (len_sum != rec_offs_data_size(offsets)) {
fprintf(stderr,
"\nInnoDB: Error: record len should be %lu, len %lu\n",
(ulong) len_sum,
(ulong) rec_offs_data_size(offsets));
return FALSE;
}
*/
if (debug) printf("\nRow looks OK!\n");
return TRUE;
}
/*******************************************************************/
inline ibool check_fields_sizes(rec_t *rec, table_def_t *table, ulint *offsets) {
int i;
if (debug) {
printf("\nChecking field lengths for a row (%s): ", table->name);
printf("OFFSETS: ");
unsigned long int prev_offset = 0;
unsigned long int curr_offset = 0;
for(i = 0; i < rec_offs_n_fields(offsets); i++) {
curr_offset = rec_offs_base(offsets)[i];
printf("%lu (+%lu); ", curr_offset, curr_offset - prev_offset);
prev_offset = curr_offset;
}
// printf("\n");
}
// check every field
for(i = 0; i < table->fields_count; i++) {
// Get field size
ulint len = rec_offs_nth_size(offsets, i);
if (debug) printf("\n - field %s(%lu):", table->fields[i].name, len);
// If field is null
if (len == UNIV_SQL_NULL) {
// Check if it can be null and jump to a next field if it is OK
if (table->fields[i].can_be_null) continue;
// Invalid record where non-nullable field is NULL
if (debug) printf("Can't be NULL or zero-length!\n");
return FALSE;
}
// Check size of fixed-length field
if (table->fields[i].fixed_length) {
// Check if size is the same and jump to the next field if it is OK
if (len == table->fields[i].fixed_length || (len == 0 && table->fields[i].can_be_null)) continue;
// Invalid fixed length field
if (debug) printf("Invalid fixed length field size: %lu, but should be %u!\n", len, table->fields[i].fixed_length);
return FALSE;
}
// Check if has externally stored data
if (rec_offs_nth_extern(offsets, i)) {
if (debug) printf("\nEXTERNALLY STORED VALUE FOUND in field %i\n", i);
if (table->fields[i].type == FT_TEXT || table->fields[i].type == FT_BLOB) continue;
if (debug) printf("Invalid external data flag!\n");
return FALSE;
}
// Check size limits for varlen fields
if (len < table->fields[i].min_length || len > table->fields[i].max_length) {
if (debug) printf("Length limits check failed (%lu < %u || %lu > %u)!\n", len, table->fields[i].min_length, len, table->fields[i].max_length);
return FALSE;
}
if (debug) printf("OK!");
}
if (debug) printf("\n");
return TRUE;
}
/*******************************************************************/
inline ibool ibrec_init_offsets_new(page_t *page, rec_t* rec, table_def_t* table, ulint* offsets) {
ulint i = 0;
ulint offs;
const byte* nulls;
const byte* lens;
ulint null_mask;
ulint status = rec_get_status(rec);
// Skip non-ordinary records
if (status != REC_STATUS_ORDINARY) return FALSE;
// First field is 0 bytes from origin point
rec_offs_base(offsets)[0] = 0;
// Init first bytes
rec_offs_set_n_fields(offsets, table->fields_count);
nulls = rec - (REC_N_NEW_EXTRA_BYTES + 1);
lens = nulls - (table->n_nullable + 7) / 8;
offs = 0;
null_mask = 1;
/* read the lengths of fields 0..n */
do {
ulint len;
field_def_t *field = &(table->fields[i]);
/* nullable field => read the null flag */
if (field->can_be_null) {
// if (debug) printf("nullable field => read the null flag\n");
if (!(byte)null_mask) {
nulls--;
null_mask = 1;
}
if (*nulls & null_mask) {
null_mask <<= 1;
/* No length is stored for NULL fields.
We do not advance offs, and we set
the length to zero and enable the
SQL NULL flag in offsets[]. */
len = offs | REC_OFFS_SQL_NULL;
goto resolved;
}
null_mask <<= 1;
}
if (!field->fixed_length) {
// if (debug) printf("Variable-length field: read the length\n");
/* Variable-length field: read the length */
len = *lens--;
if (field->max_length > 255 || field->type == FT_BLOB || field->type == FT_TEXT) {
if (len & 0x80) {
/* 1exxxxxxx xxxxxxxx */
len <<= 8;
len |= *lens--;
offs += len & 0x3fff;
if (len & 0x4000) {
len = offs | REC_OFFS_EXTERNAL;
} else {
len = offs;
}
goto resolved;
}
}
len = offs += len;
} else {
len = offs += field->fixed_length;
}
resolved:
offs &= 0xffff;
if (rec + offs - page > UNIV_PAGE_SIZE) {
if (debug) printf("Invalid offset for field %lu: %lu\n", i, offs);
return FALSE;
}
rec_offs_base(offsets)[i + 1] = len;
} while (++i < table->fields_count);
return TRUE;
}
/*******************************************************************/
inline ibool ibrec_init_offsets_old(page_t *page, rec_t* rec, table_def_t* table, ulint* offsets) {
ulint i = 0;
ulint offs;
// First field is 0 bytes from origin point
rec_offs_base(offsets)[0] = 0;
// Init first bytes
rec_offs_set_n_fields(offsets, table->fields_count);
/* Old-style record: determine extra size and end offsets */
offs = REC_N_OLD_EXTRA_BYTES;
if (rec_get_1byte_offs_flag(rec)) {
offs += rec_offs_n_fields(offsets);
*rec_offs_base(offsets) = offs;
/* Determine offsets to fields */
do {
offs = rec_1_get_field_end_info(rec, i);
if (offs & REC_1BYTE_SQL_NULL_MASK) {
offs &= ~REC_1BYTE_SQL_NULL_MASK;
offs |= REC_OFFS_SQL_NULL;
}
offs &= 0xffff;
if (rec + offs - page > UNIV_PAGE_SIZE) {
if (debug) printf("Invalid offset for field %lu: %lu\n", i, offs);
return FALSE;
}
rec_offs_base(offsets)[1 + i] = offs;
} while (++i < rec_offs_n_fields(offsets));
} else {
offs += 2 * rec_offs_n_fields(offsets);
*rec_offs_base(offsets) = offs;
/* Determine offsets to fields */
do {
offs = rec_2_get_field_end_info(rec, i);
if (offs & REC_2BYTE_SQL_NULL_MASK) {
offs &= ~REC_2BYTE_SQL_NULL_MASK;
offs |= REC_OFFS_SQL_NULL;
}
if (offs & REC_2BYTE_EXTERN_MASK) {
offs &= ~REC_2BYTE_EXTERN_MASK;
offs |= REC_OFFS_EXTERNAL;
}
offs &= 0xffff;
if (rec + offs - page > UNIV_PAGE_SIZE) {
if (debug) printf("Invalid offset for field %lu: %lu\n", i, offs);
return FALSE;
}
rec_offs_base(offsets)[1 + i] = offs;
} while (++i < rec_offs_n_fields(offsets));
}
return TRUE;
}
/*******************************************************************/
inline ibool check_for_a_record(page_t *page, rec_t *rec, table_def_t *table, ulint *offsets) {
ulint offset, data_size;
int flag;
// Check if given origin is valid
offset = rec - page;
if (offset < record_extra_bytes + table->min_rec_header_len) return FALSE;
if (debug) printf("ORIGIN=OK ");
flag = rec_get_deleted_flag(rec, page_is_comp(page));
if (debug) printf("DELETED=0x%X ", flag);
// Skip non-deleted records
if (deleted_records_only && flag == 0) return FALSE;
// Skip deleted records
if (undeleted_records_only && flag != 0) return FALSE;
// Get field offsets for current table
int comp = page_is_comp(page);
if (comp && !ibrec_init_offsets_new(page, rec, table, offsets)) return FALSE;
if (!comp && !ibrec_init_offsets_old(page, rec, table, offsets)) return FALSE;
if (debug) printf("OFFSETS=OK ");
// Check the record's data size
data_size = rec_offs_data_size(offsets);
if (data_size > table->data_max_size) {
if (debug) printf("DATA_SIZE=FAIL(%lu > %ld) ", (long int)data_size, (long int)table->data_max_size);
return FALSE;
}
if (data_size < table->data_min_size) {
if (debug) printf("DATA_SIZE=FAIL(%lu < %lu) ", (long int)data_size, (long int)table->data_min_size);
return FALSE;
}
if (debug) printf("DATA_SIZE=OK ");
// Check fields sizes
if (!check_fields_sizes(rec, table, offsets)) return FALSE;
if (debug) printf("FIELD_SIZES=OK ");
// This record could be valid and useful for us
return TRUE;
}
/*******************************************************************/
int check_page(page_t *page, unsigned int *n_records){
int comp = page_is_comp(page);
int16_t i, s, p, b, p_prev;
int recs = 0;
int max_recs = UNIV_PAGE_SIZE / 5;
*n_records = 0;
i = (comp) ? PAGE_NEW_INFIMUM : PAGE_OLD_INFIMUM;
s = (comp) ? PAGE_NEW_SUPREMUM : PAGE_OLD_SUPREMUM;
if(deleted_records_only == 1){
if (debug) printf("We look for deleted records only. Consider all pages are not valid\n");
return 0;
}
if (debug) printf("Checking a page\nInfimum offset: 0x%X\nSupremum offset: 0x%X\n", i, s);
p_prev = 0;
p = i;
while(p != s){
if(recs > max_recs){
*n_records = 0;
if (debug) printf("Page is bad\n");
return 0;
}
// If a pointer to the next record is negative - the page is bad
if(p < 2){
*n_records = 0;
if (debug) printf("Page is bad\n");
return 0;
}
// If the pointer is bigger than UNIV_PAGE_SIZE, the page is corrupted
if(p > UNIV_PAGE_SIZE){
*n_records = 0;
if (debug) printf("Page is bad\n");
return 0;
}
// If we've already was here, the page is bad
if(p == p_prev){
*n_records = 0;
if (debug) printf("Page is bad\n");
return 0;
}
p_prev = p;
// Get next pointer
if(comp){
b = mach_read_from_2(page + p - 2);
p = p + b;
}
else{
p = mach_read_from_2(page + p - 2);
}
if (debug) printf("Next record at offset: 0x%X (%d) \n", 0x0000FFFF & p, p);
recs++;
}
*n_records = recs -1; // - infinum record
if (debug) printf("Page is good\n");
return 1;
}
/*******************************************************************/
void process_ibpage(page_t *page, bool hex) {
ulint page_id;
rec_t *origin;
ulint offsets[MAX_TABLE_FIELDS + 2];
ulint offset, i;
int is_page_valid = 0;
int comp;
unsigned int expected_records = 0;
unsigned int expected_records_inheader = 0;
unsigned int actual_records = 0;
int16_t b, infimum, supremum;
// Skip tables if filter used
if (use_filter_id) {
dulint index_id = mach_read_from_8(page + PAGE_HEADER + PAGE_INDEX_ID);
if (index_id.low != filter_id.low || index_id.high != filter_id.high) {
if (debug) {
page_id = mach_read_from_4(page + FIL_PAGE_OFFSET);
printf("Skipped using index id filter: %lu!\n", page_id);
}
return;
}
}
// Read page id
page_id = mach_read_from_4(page + FIL_PAGE_OFFSET);
if (debug) printf("Page id: %lu\n", page_id);
fprintf(f_result, "-- Page id: %lu", page_id);
if(table_definitions_cnt == 0){
fprintf(stderr, "There are no table definitions. Please check include/table_defs.h\n");
exit(EXIT_FAILURE);
}
is_page_valid = check_page(page, &expected_records);
// comp == 1 if page in COMPACT format and 0 if REDUNDANT
comp = page_is_comp(page);
fprintf(f_result, ", Format: %s", (comp ) ? "COMPACT": "REDUNDANT");
infimum = (comp) ? PAGE_NEW_INFIMUM : PAGE_OLD_INFIMUM;
supremum = (comp) ? PAGE_NEW_SUPREMUM : PAGE_OLD_SUPREMUM;
// Find possible data area start point (at least 5 bytes of utility data)
if(is_page_valid){
b = mach_read_from_2(page + infimum - 2);
offset = (comp) ? infimum + b : b;
}
else{
offset = 100 + record_extra_bytes;
}
fprintf(f_result, ", Records list: %s", is_page_valid? "Valid": "Invalid");
expected_records_inheader = mach_read_from_2(page + PAGE_HEADER + PAGE_N_RECS);
fprintf(f_result, ", Expected records: (%u %u)", expected_records, expected_records_inheader);
fprintf(f_result, "\n");
if (debug) printf("Starting offset: %lu (%lX). Checking %d table definitions.\n", offset, offset, table_definitions_cnt);
// Walk through all possible positions to the end of page
// (start of directory - extra bytes of the last rec)
//is_page_valid = 0;
while (offset < UNIV_PAGE_SIZE - record_extra_bytes && ( (offset != supremum ) || !is_page_valid) ) {
// Get record pointer
origin = page + offset;
if (debug) printf("\nChecking offset: 0x%lX: ", offset);
// Check all tables
for (i = 0; i < table_definitions_cnt; i++) {
// Get table info
table_def_t *table = &(table_definitions[i]);
if (debug) printf(" (%s) ", table->name);
// Check if origin points to a valid record
if (check_for_a_record(page, origin, table, offsets) && check_constraints(origin, table, offsets)) {
actual_records++;
if (debug) printf("\n---------------------------------------------------\n"
"PAGE%lu: Found a table %s record: %p (offset = %lu)\n", \
page_id, table->name, origin, offset);
if(is_page_valid){
process_ibrec(page, origin, table, offsets, hex);
b = mach_read_from_2(page + offset - 2);
offset = (comp) ? offset + b : b;
}
else{
offset += process_ibrec(page, origin, table, offsets, hex);
}
if (debug) printf("Next offset: 0x%lX", offset);
break;
}
else{
if(is_page_valid){
b = mach_read_from_2(page + offset - 2);
offset = (comp) ? offset + b : b;
}
else{
offset++;
}
if (debug) printf("\nNext offset: %lX", offset);
}
}
}
fflush(f_result);
int leaf_page = mach_read_from_2(page + PAGE_HEADER + PAGE_LEVEL) == 0;
int lost_records = (actual_records != expected_records) && (actual_records != expected_records_inheader);
fprintf(f_result, "-- Page id: %lu", page_id);
fprintf(f_result, ", Found records: %u", actual_records);
fprintf(f_result, ", Lost records: %s", lost_records ? "YES": "NO");
fprintf(f_result, ", Leaf page: %s", leaf_page ? "YES": "NO");
fprintf(f_result, "\n");
if (leaf_page) {
records_expected_total += expected_records_inheader;
records_dumped_total += actual_records;
if (lost_records) {
records_lost = 1;
}
}
}
/*******************************************************************/
void process_ibfile(int fn, bool hex) {
int read_bytes;
unsigned char *compressed_page_data = NULL;
page_t *page = NULL; // Alias for decompressed page data
struct stat st;
off_t pos;
ulint free_offset;
if (compressed_pages) {
// Allocate buffers for compressed and decompressed data
compressed_page_data = malloc(8 * 1024);
page = malloc(UNIV_PAGE_SIZE);
if (!compressed_page_data || !page) {
fprintf(stderr, "Can't allocate necessary buffers!\n");
exit(EXIT_FAILURE);
}
} else {
// Allocate buffer for uncompressed page data
page = malloc(UNIV_PAGE_SIZE);
if (!page) {
fprintf(stderr, "Can't allocate page buffer!\n");
exit(EXIT_FAILURE);
}
}
if (debug) printf("Read data from fn=%d...\n", fn);
// Get file info
fstat(fn, &st);
if (compressed_pages) {
// Read and process compressed pages
while ((read_bytes = read(fn, compressed_page_data, 8 * 1024)) == 8 * 1024) {
pos = lseek(fn, 0, SEEK_CUR);
if (pos % (UNIV_PAGE_SIZE * 512) == 0) {
fprintf(f_sql, "-- %.2f%% done\n", 100.0 * pos / st.st_size);
}
// Decompress the page
/*
if (decompress_page(compressed_page_data, (unsigned char *)page) != 0) {
fprintf(stderr, "Failed to decompress page at offset %ld\n", pos);
continue;
}
*/
if (deleted_pages_only) {
free_offset = page_header_get_field(page, PAGE_FREE);
if (page_header_get_field(page, PAGE_N_RECS) == 0 && free_offset == 0) continue;
if (free_offset > 0 && page_header_get_field(page, PAGE_GARBAGE) == 0) continue;
if (free_offset > UNIV_PAGE_SIZE) continue;
}
// Initialize table definitions (count nullable fields, data sizes, etc)
init_table_defs(page_is_comp(page));
process_ibpage(page, hex);
}
free(compressed_page_data);
} else {
// Read and process uncompressed pages
while ((read_bytes = read(fn, page, UNIV_PAGE_SIZE)) == UNIV_PAGE_SIZE) {
pos = lseek(fn, 0, SEEK_CUR);
if (pos % (UNIV_PAGE_SIZE * 512) == 0) {
fprintf(f_sql, "-- %.2f%% done\n", 100.0 * pos / st.st_size);
}
if (deleted_pages_only) {
free_offset = page_header_get_field(page, PAGE_FREE);
if (page_header_get_field(page, PAGE_N_RECS) == 0 && free_offset == 0) continue;
if (free_offset > 0 && page_header_get_field(page, PAGE_GARBAGE) == 0) continue;
if (free_offset > UNIV_PAGE_SIZE) continue;
}
// Initialize table definitions (count nullable fields, data sizes, etc)
init_table_defs(page_is_comp(page));
process_ibpage(page, hex);
}
}
free(page);
}
/*******************************************************************/
// Add this function to handle opening input files
int open_ibfile(char *fname) {
struct stat fstat;
int fn;
// Support reading from stdin when filename is "-"
if (strcmp(fname, "-") == 0) {
return STDIN_FILENO;
}
// Skip non-regular files and non-FIFOs
if (debug) printf("Opening file: %s\n", fname);
if (stat(fname, &fstat) != 0 || (!S_ISREG(fstat.st_mode) && !S_ISFIFO(fstat.st_mode))) {
fprintf(stderr, "Invalid file specified!\n");
exit(EXIT_FAILURE);
}
fn = open(fname, O_RDONLY);
if (fn < 0) { // Correctly check for open failure
perror("Can't open file");
exit(EXIT_FAILURE);
}
return fn;
}
/*******************************************************************/
void set_filter_id(char *id) {
int cnt = sscanf(id, "%lu:%lu", &filter_id.high, &filter_id.low);
if (cnt < 2) {
fprintf(stderr, "Invalid index id provided! It should be in N:M format, where N and M are unsigned integers");
exit(EXIT_FAILURE);
}
use_filter_id = 1;
}
/*******************************************************************/
void usage() {
error(
"Usage: ./c_parser [-4|-5|-6] [-dDV] -f <InnoDB page or dir> -t table.sql [-T N:M] [-b <external pages directory>]\n"
" Where\n"
" -f <InnoDB page(s)> -- InnoDB page or directory with pages(all pages should have same index_id)\n"
" -t <table.sql> -- CREATE statement of a table\n"
" -o <file> -- Save dump in this file. Otherwise print to stdout\n"
" -l <file> -- Save SQL statements in this file. Otherwise print to stderr\n"
" -h -- Print this help\n"
" -C -- Specify that the pages are compressed and need decompression (default = NO)\n"
" -d -- Process only those pages which potentially could have deleted records (default = NO)\n"
" -D -- Recover deleted rows only (default = NO)\n"
" -U -- Recover UNdeleted rows only (default = YES)\n"
" -V -- Verbose mode (lots of debug information)\n"
" -4 -- innodb_datafile is in REDUNDANT format\n"
" -5 -- innodb_datafile is in COMPACT format\n"
" -6 -- innodb_datafile is in MySQL 5.6 format\n"
" c_parser can detect REDUNDANT or COMPACT, so -4 and -5 are optional. If you use MySQL 5.6+ however, -6 is necessary\n"
" -T -- retrieves only pages with index id = NM (N - high word, M - low word of id)\n"
" -b <dir> -- Directory where external pages can be found. Usually it is pages-XXX/FIL_PAGE_TYPE_BLOB/\n"
" -i <file> -- Read external pages at their offsets from <file>.\n"
" -p prefix -- Use prefix for a directory name in LOAD DATA INFILE command\n"
" -x -- Print text values in hexadecimal format.\n"
" -s -- Output format as Insert statements.\n"
"\n"
);
}
/*******************************************************************/
int main(int argc, char **argv) {
int fn = 0, ch;
int is_dir = 0;
struct stat st;
char src[256] = "";
char table_schema[256] = "";
char buffer[BUFSIZ];
setvbuf(stdout, buffer, _IOFBF, sizeof(buffer));
// Always append to the same file in the current directory
f_result = fopen("output.txt", "a");
if (f_result == NULL) {
fprintf(stderr, "Can't open output file for appending\n");
exit(EXIT_FAILURE);
}
f_sql = fopen("output.txt", "a");
if (f_sql == NULL) {
fprintf(stderr, "Can't open output file for appending\n");
exit(EXIT_FAILURE);
}
bool hex = 0;
while ((ch = getopt(argc, argv, "t:456hdDUVf:T:b:p:o:i:l:x:sC")) != -1) {
switch (ch) {
case 'd':
deleted_pages_only = 1;
break;
case 'C':
compressed_pages = 1;
break;
case 'D':
deleted_records_only = 1;
undeleted_records_only = 0;
break;
case 'U':
undeleted_records_only = 1;
break;
case 'o':
// No longer needed to handle 'o' since we always append to "output.txt"
break;
case 'i':
strncpy(path_ibdata, optarg, sizeof(path_ibdata));
external_in_ibdata = 1;
break;
case 'l':
// No longer needed to handle 'l' since we always append to "output.txt"
break;
case 't':
strncpy(table_schema, optarg, sizeof(table_schema));
break;
case 'f':
strncpy(src, optarg, sizeof(src));
if(stat(src, &st) == 0){
if(S_ISDIR(st.st_mode)){
is_dir = 1;
}
}
else{
perror("stat");
fprintf(stderr, "Can't stat %s\n", src);
exit(-1);
}
break;
case 'V':
debug = 1;
break;
case '4':
case '5':
break;
case '6':
process_56 = 1;
break;
case 's':
output_sql_inserts = 1;
break;
case 'T':
set_filter_id(optarg);
break;
case 'b':
strncpy(blob_dir, optarg, sizeof(blob_dir));
break;
case 'p':
strncpy(dump_prefix, optarg, sizeof(dump_prefix));
break;
case 'x':
hex = 1;
break;
default:
case '?':
case 'h':
usage();
}
}
if(src[0] == 0){
usage();
}
if(load_table(table_schema) != 0){
fprintf(stderr, "Failed to parse table structure\n");
usage();
exit(EXIT_FAILURE);
}
if(is_dir){
DIR *src_dir;
char src_file[256];
struct dirent *de;
src_dir = opendir(src);
while(NULL != (de = readdir(src_dir))){
if(!strncmp(de->d_name, ".", sizeof(de->d_name))) continue;
if(!strncmp(de->d_name, "..", sizeof(de->d_name))) continue;
snprintf(src_file, sizeof(src_file), "%s/%s", src, de->d_name);
if(debug) { fprintf(stderr, "Processing %s\n", src_file); }
if(0 == (fn = open_ibfile(src_file))){
fprintf(stderr, "Can't open %s\n", src_file);
perror("open_ibfile");
exit(-1);
}
process_ibfile(fn, hex);
close(fn);
}
closedir(src_dir);
}
else{
if(0 == (fn = open_ibfile(src))){
fprintf(stderr, "Can't open %s\n", src);
perror("open_ibfile");
exit(-1);
}
process_ibfile(fn, hex);
close(fn);
}
table_def_t *table = &(table_definitions[0]);
fprintf(f_sql, "SET FOREIGN_KEY_CHECKS=0;\n");
fprintf(f_sql, "LOAD DATA LOCAL INFILE '");
if(f_result == stdout){
fprintf(f_sql, "%s/dumps/%s/%s", getenv("PWD"), dump_prefix, table->name);
}
else{
fprintf(f_sql, "%s", "output.txt");
}
fprintf(f_sql, "' REPLACE INTO TABLE `%s` CHARACTER SET UTF8 FIELDS TERMINATED BY '\\t' OPTIONALLY ENCLOSED BY '\"' LINES STARTING BY '%s\\t' ", table->name, table->name);
int i = 0;
int comma = 0;