forked from mariadb-corporation/mariadb-connector-c
-
Notifications
You must be signed in to change notification settings - Fork 0
/
mariadb_stmt.c
2274 lines (1989 loc) · 65.4 KB
/
mariadb_stmt.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 (C) 2012 Monty Program AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not see <http://www.gnu.org/licenses>
or write to the Free Software Foundation, Inc.,
51 Franklin St., Fifth Floor, Boston, MA 02110, USA
Part of this code includes code from the PHP project which
is freely available from http://www.php.net
*****************************************************************************/
/* The implementation for prepared statements was ported from PHP's mysqlnd
extension, written by Andrey Hristov, Georg Richter and Ulf Wendel
Original file header:
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2011 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Georg Richter <georg@mysql.com> |
| Andrey Hristov <andrey@mysql.com> |
| Ulf Wendel <uwendel@mysql.com> |
+----------------------------------------------------------------------+
*/
#include "ma_global.h"
#include <ma_sys.h>
#include <ma_string.h>
#include <mariadb_ctype.h>
#include "mysql.h"
#include "errmsg.h"
#include <ma_pvio.h>
#include <sys/stat.h>
#include <signal.h>
#include <time.h>
#include <mysql/client_plugin.h>
#include <ma_common.h>
#define STMT_NUM_OFS(type, a,r) ((type *)(a))[r]
#define MADB_RESET_ERROR 1
#define MADB_RESET_LONGDATA 2
#define MADB_RESET_SERVER 4
#define MADB_RESET_BUFFER 8
#define MADB_RESET_STORED 16
#define MAX_TIME_STR_LEN 13
#define MAX_DATE_STR_LEN 5
#define MAX_DATETIME_STR_LEN 12
typedef struct
{
MA_MEM_ROOT fields_ma_alloc_root;
} MADB_STMT_EXTENSION;
MYSQL_DATA *read_rows(MYSQL *mysql,MYSQL_FIELD *mysql_fields, uint fields);
void free_rows(MYSQL_DATA *cur);
int ma_multi_command(MYSQL *mysql, enum enum_multi_status status);
MYSQL_FIELD * unpack_fields(MYSQL_DATA *data,MA_MEM_ROOT *alloc,uint fields, my_bool default_value, my_bool long_flag_protocol);
static my_bool net_stmt_close(MYSQL_STMT *stmt, my_bool remove);
static my_bool is_not_null= 0;
static my_bool is_null= 1;
void stmt_set_error(MYSQL_STMT *stmt,
unsigned int error_nr,
const char *sqlstate,
const char *format,
...)
{
va_list ap;
stmt->last_errno= error_nr;
ma_strmake(stmt->sqlstate, sqlstate, SQLSTATE_LENGTH);
va_start(ap, format);
vsnprintf(stmt->last_error, MYSQL_ERRMSG_SIZE,
format ? format : ER(error_nr), ap);
va_end(ap);
return;
}
my_bool mthd_supported_buffer_type(enum enum_field_types type)
{
switch (type) {
case MYSQL_TYPE_BIT:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_DOUBLE:
case MYSQL_TYPE_FLOAT:
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_NEWDATE:
case MYSQL_TYPE_NEWDECIMAL:
case MYSQL_TYPE_NULL:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_JSON:
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_YEAR:
return 1;
break;
default:
return 0;
break;
}
}
static my_bool madb_reset_stmt(MYSQL_STMT *stmt, unsigned int flags);
static my_bool mysql_stmt_internal_reset(MYSQL_STMT *stmt, my_bool is_close);
static int stmt_unbuffered_eof(MYSQL_STMT *stmt __attribute__((unused)),
uchar **row __attribute__((unused)))
{
return MYSQL_NO_DATA;
}
static int stmt_unbuffered_fetch(MYSQL_STMT *stmt, uchar **row)
{
ulong pkt_len;
pkt_len= ma_net_safe_read(stmt->mysql);
if (pkt_len == packet_error)
{
stmt->fetch_row_func= stmt_unbuffered_eof;
return(1);
}
if (stmt->mysql->net.read_pos[0] == 254)
{
*row = NULL;
stmt->fetch_row_func= stmt_unbuffered_eof;
return(MYSQL_NO_DATA);
}
else
*row = stmt->mysql->net.read_pos;
stmt->result.rows++;
return(0);
}
static int stmt_buffered_fetch(MYSQL_STMT *stmt, uchar **row)
{
if (!stmt->result_cursor)
{
*row= NULL;
stmt->state= MYSQL_STMT_FETCH_DONE;
return MYSQL_NO_DATA;
}
stmt->state= MYSQL_STMT_USER_FETCHING;
*row= (uchar *)stmt->result_cursor->data;
stmt->result_cursor= stmt->result_cursor->next;
return 0;
}
int mthd_stmt_read_all_rows(MYSQL_STMT *stmt)
{
MYSQL_DATA *result= &stmt->result;
MYSQL_ROWS *current, **pprevious;
ulong packet_len;
unsigned char *p;
pprevious= &result->data;
while ((packet_len = ma_net_safe_read(stmt->mysql)) != packet_error)
{
p= stmt->mysql->net.read_pos;
if (packet_len > 7 || p[0] != 254)
{
/* allocate space for rows */
if (!(current= (MYSQL_ROWS *)ma_alloc_root(&result->alloc, sizeof(MYSQL_ROWS) + packet_len)))
{
SET_CLIENT_STMT_ERROR(stmt, CR_OUT_OF_MEMORY, SQLSTATE_UNKNOWN, 0);
return(1);
}
current->data= (MYSQL_ROW)(current + 1);
*pprevious= current;
pprevious= ¤t->next;
/* copy binary row, we will encode it during mysql_stmt_fetch */
memcpy((char *)current->data, (char *)p, packet_len);
if (stmt->update_max_length)
{
uchar *null_ptr, bit_offset= 4;
uchar *cp= p;
unsigned int i;
cp++; /* skip first byte */
null_ptr= cp;
cp+= (stmt->field_count + 9) / 8;
for (i=0; i < stmt->field_count; i++)
{
if (!(*null_ptr & bit_offset))
{
if (mysql_ps_fetch_functions[stmt->fields[i].type].pack_len < 0)
{
/* We need to calculate the sizes for date and time types */
size_t len= net_field_length(&cp);
switch(stmt->fields[i].type) {
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIMESTAMP:
stmt->fields[i].max_length= mysql_ps_fetch_functions[stmt->fields[i].type].max_len;
break;
default:
if (len > stmt->fields[i].max_length)
stmt->fields[i].max_length= (ulong)len;
break;
}
cp+= len;
}
else
{
if (!stmt->fields[i].max_length)
stmt->fields[i].max_length= mysql_ps_fetch_functions[stmt->fields[i].type].max_len;
cp+= mysql_ps_fetch_functions[stmt->fields[i].type].pack_len;
}
}
if (!((bit_offset <<=1) & 255))
{
bit_offset= 1; /* To next byte */
null_ptr++;
}
}
}
current->length= packet_len;
result->rows++;
} else /* end of stream */
{
*pprevious= 0;
/* sace status info */
p++;
stmt->upsert_status.warning_count= stmt->mysql->warning_count= uint2korr(p);
p+=2;
stmt->upsert_status.server_status= stmt->mysql->server_status= uint2korr(p);
stmt->result_cursor= result->data;
return(0);
}
}
stmt->result_cursor= 0;
SET_CLIENT_STMT_ERROR(stmt, stmt->mysql->net.last_errno, stmt->mysql->net.sqlstate,
stmt->mysql->net.last_error);
return(1);
}
static int stmt_cursor_fetch(MYSQL_STMT *stmt, uchar **row)
{
uchar buf[STMT_ID_LENGTH + 4];
MYSQL_DATA *result= &stmt->result;
if (stmt->state < MYSQL_STMT_USE_OR_STORE_CALLED)
{
SET_CLIENT_STMT_ERROR(stmt, CR_COMMANDS_OUT_OF_SYNC, SQLSTATE_UNKNOWN, 0);
return(1);
}
/* do we have some prefetched rows available ? */
if (stmt->result_cursor)
return(stmt_buffered_fetch(stmt, row));
if (stmt->upsert_status.server_status & SERVER_STATUS_LAST_ROW_SENT)
stmt->upsert_status.server_status&= ~SERVER_STATUS_LAST_ROW_SENT;
else
{
int4store(buf, stmt->stmt_id);
int4store(buf + STMT_ID_LENGTH, stmt->prefetch_rows);
if (stmt->mysql->methods->db_command(stmt->mysql, COM_STMT_FETCH, (char *)buf, sizeof(buf), 1, stmt))
return(1);
/* free previously allocated buffer */
ma_free_root(&result->alloc, MYF(MY_KEEP_PREALLOC));
result->data= 0;
result->rows= 0;
if (stmt->mysql->methods->db_stmt_read_all_rows(stmt))
return(1);
return(stmt_buffered_fetch(stmt, row));
}
/* no more cursor data available */
*row= NULL;
return(MYSQL_NO_DATA);
}
/* flush one result set */
void mthd_stmt_flush_unbuffered(MYSQL_STMT *stmt)
{
ulong packet_len;
int in_resultset= stmt->state > MYSQL_STMT_EXECUTED &&
stmt->state < MYSQL_STMT_FETCH_DONE;
while ((packet_len = ma_net_safe_read(stmt->mysql)) != packet_error)
{
uchar *pos= stmt->mysql->net.read_pos;
if (!in_resultset && *pos == 0) /* OK */
{
pos++;
net_field_length(&pos);
net_field_length(&pos);
stmt->mysql->server_status= uint2korr(pos);
goto end;
}
if (packet_len < 8 && *pos == 254) /* EOF */
{
stmt->mysql->server_status= uint2korr(pos + 3);
if (in_resultset)
goto end;
in_resultset= 1;
}
}
end:
stmt->state= MYSQL_STMT_FETCH_DONE;
}
int mthd_stmt_fetch_to_bind(MYSQL_STMT *stmt, unsigned char *row)
{
uint i;
size_t truncations= 0;
unsigned char *null_ptr, bit_offset= 4;
if (!stmt->bind_result_done) /* nothing to do */
return(0);
row++; /* skip status byte */
null_ptr= row;
row+= (stmt->field_count + 9) / 8;
for (i=0; i < stmt->field_count; i++)
{
/* save row position for fetching values in pieces */
if (*null_ptr & bit_offset)
{
*stmt->bind[i].is_null= 1;
stmt->bind[i].u.row_ptr= NULL;
} else
{
stmt->bind[i].u.row_ptr= row;
if (stmt->bind[i].flags & MADB_BIND_DUMMY)
{
unsigned long length;
if (mysql_ps_fetch_functions[stmt->fields[i].type].pack_len >= 0)
length= mysql_ps_fetch_functions[stmt->fields[i].type].pack_len;
else
length= net_field_length(&row);
row+= length;
}
else
{
if (!stmt->bind[i].length)
stmt->bind[i].length= &stmt->bind[i].length_value;
if (!stmt->bind[i].is_null)
stmt->bind[i].is_null= &stmt->bind[i].is_null_value;
*stmt->bind[i].is_null= 0;
mysql_ps_fetch_functions[stmt->fields[i].type].func(&stmt->bind[i], &stmt->fields[i], &row);
if (stmt->mysql->options.report_data_truncation)
truncations+= *stmt->bind[i].error;
}
}
if (!((bit_offset <<=1) & 255)) {
bit_offset= 1; /* To next byte */
null_ptr++;
}
}
return((truncations) ? MYSQL_DATA_TRUNCATED : 0);
}
MYSQL_RES *_mysql_stmt_use_result(MYSQL_STMT *stmt)
{
MYSQL *mysql= stmt->mysql;
if (!stmt->field_count ||
(!stmt->cursor_exists && mysql->status != MYSQL_STATUS_STMT_RESULT) ||
(stmt->cursor_exists && mysql->status != MYSQL_STATUS_READY) ||
(stmt->state != MYSQL_STMT_WAITING_USE_OR_STORE))
{
SET_CLIENT_ERROR(mysql, CR_COMMANDS_OUT_OF_SYNC, SQLSTATE_UNKNOWN, 0);
return(NULL);
}
CLEAR_CLIENT_STMT_ERROR(stmt);
stmt->state = MYSQL_STMT_USE_OR_STORE_CALLED;
if (!stmt->cursor_exists)
stmt->fetch_row_func= stmt_unbuffered_fetch; //mysql_stmt_fetch_unbuffered_row;
else
stmt->fetch_row_func= stmt_cursor_fetch;
return(NULL);
}
unsigned char *mysql_net_store_length(unsigned char *packet, size_t length)
{
if (length < (unsigned long long) L64(251)) {
*packet = (unsigned char) length;
return packet + 1;
}
if (length < (unsigned long long) L64(65536)) {
*packet++ = 252;
int2store(packet,(uint) length);
return packet + 2;
}
if (length < (unsigned long long) L64(16777216)) {
*packet++ = 253;
int3store(packet,(ulong) length);
return packet + 3;
}
*packet++ = 254;
int8store(packet, length);
return packet + 8;
}
static long ma_get_length(MYSQL_STMT *stmt, unsigned int param_nr, unsigned long row_nr)
{
if (!stmt->params[param_nr].length)
return 0;
if (stmt->row_size)
return *(long *)((char *)stmt->params[param_nr].length + row_nr * stmt->row_size);
else
return stmt->params[param_nr].length[row_nr];
}
static char ma_get_indicator(MYSQL_STMT *stmt, unsigned int param_nr, unsigned long row_nr)
{
if (!MARIADB_STMT_BULK_SUPPORTED(stmt) ||
!stmt->array_size ||
!stmt->params[param_nr].u.indicator)
return 0;
if (stmt->row_size)
return *((char *)stmt->params[param_nr].u.indicator + (row_nr * stmt->row_size));
return stmt->params[param_nr].u.indicator[row_nr];
}
static void *ma_get_buffer_offset(MYSQL_STMT *stmt, enum enum_field_types type,
void *buffer, unsigned long row_nr)
{
if (stmt->array_size)
{
int len;
if (stmt->row_size)
return (void *)((char *)buffer + stmt->row_size * row_nr);
len= mysql_ps_fetch_functions[type].pack_len;
if (len > 0)
return (void *)((char *)buffer + len * row_nr);
return ((void **)buffer)[row_nr];
}
return buffer;
}
int store_param(MYSQL_STMT *stmt, int column, unsigned char **p, unsigned long row_nr)
{
void *buf= ma_get_buffer_offset(stmt, stmt->params[column].buffer_type,
stmt->params[column].buffer, row_nr);
char indicator= ma_get_indicator(stmt, column, row_nr);
switch (stmt->params[column].buffer_type) {
case MYSQL_TYPE_TINY:
int1store(*p, (*(uchar *)buf));
(*p) += 1;
break;
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_YEAR:
int2store(*p, (*(short *)buf));
(*p) += 2;
break;
case MYSQL_TYPE_FLOAT:
float4store(*p, (*(float *)buf));
(*p) += 4;
break;
case MYSQL_TYPE_DOUBLE:
float8store(*p, (*(double *)buf));
(*p) += 8;
break;
case MYSQL_TYPE_LONGLONG:
int8store(*p, (*(ulonglong *)buf));
(*p) += 8;
break;
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_INT24:
int4store(*p, (*(int32 *)buf));
(*p)+= 4;
break;
case MYSQL_TYPE_TIME:
{
/* binary encoding:
Offset Length Field
0 1 Length
1 1 negative
2-5 4 day
6 1 hour
7 1 ninute
8 1 second;
9-13 4 second_part
*/
MYSQL_TIME *t= (MYSQL_TIME *)ma_get_buffer_offset(stmt, stmt->params[column].buffer_type,
stmt->params[column].buffer, row_nr);
char t_buffer[MAX_TIME_STR_LEN];
uint len= 0;
t_buffer[1]= t->neg ? 1 : 0;
int4store(t_buffer + 2, t->day);
t_buffer[6]= (uchar) t->hour;
t_buffer[7]= (uchar) t->minute;
t_buffer[8]= (uchar) t->second;
if (t->second_part)
{
int4store(t_buffer + 9, t->second_part);
len= 12;
}
else if (t->day || t->hour || t->minute || t->second)
len= 8;
t_buffer[0]= len++;
memcpy(*p, t_buffer, len);
(*p)+= len;
break;
}
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_DATETIME:
{
/* binary format for date, timestamp and datetime
Offset Length Field
0 1 Length
1-2 2 Year
3 1 Month
4 1 Day
5 1 Hour
6 1 minute
7 1 second
8-11 4 secondpart
*/
MYSQL_TIME *t= (MYSQL_TIME *)ma_get_buffer_offset(stmt, stmt->params[column].buffer_type,
stmt->params[column].buffer, row_nr);
char t_buffer[MAX_DATETIME_STR_LEN];
uint len= 0;
int2store(t_buffer + 1, t->year);
t_buffer[3]= (char) t->month;
t_buffer[4]= (char) t->day;
t_buffer[5]= (char) t->hour;
t_buffer[6]= (char) t->minute;
t_buffer[7]= (char) t->second;
if (t->second_part)
{
int4store(t_buffer + 8, t->second_part);
len= 11;
}
else if (t->hour || t->minute || t->second)
len= 7;
else if (t->year || t->month || t->day)
len= 4;
else
len=0;
t_buffer[0]= len++;
memcpy(*p, t_buffer, len);
(*p)+= len;
break;
}
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_JSON:
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_NEWDECIMAL:
{
ulong len;
/* to is after p. The latter hasn't been moved */
uchar *to;
if (indicator == STMT_INDICATOR_NTS)
len= -1;
else
len= ma_get_length(stmt, column, row_nr);
if (len == (ulong)-1)
len= (ulong)strlen((char *)buf);
to = mysql_net_store_length(*p, len);
if (len)
memcpy(to, buf, len);
(*p) = to + len;
break;
}
default:
/* unsupported parameter type */
SET_CLIENT_STMT_ERROR(stmt, CR_UNSUPPORTED_PARAM_TYPE, SQLSTATE_UNKNOWN, 0);
return 1;
}
return 0;
}
/* {{{ mysqlnd_stmt_execute_generate_request */
unsigned char* mysql_stmt_execute_generate_request(MYSQL_STMT *stmt, size_t *request_len)
{
/* execute packet has the following format:
Offset Length Description
-----------------------------------------
0 4 Statement id
4 1 Flags (cursor type)
5 4 Iteration count
-----------------------------------------
if (stmt->param_count):
6 (paramcount+7)/8 null bitmap
------------------------------------------
if (stmt->send_types_to_server):
param_count*2 parameter types
1st byte: parameter type
2nd byte flag:
unsigned flag (32768)
indicator variable exists (16384)
------------------------------------------
Pre 10.2 protocol
n data from bind_buffer
10.2 protocol
if indicator variable exists
1st byte: indicator variable
2nd-n: data
*/
size_t length= 1024;
size_t free_bytes= 0;
size_t null_byte_offset= 0;
uint i, j, num_rows= 1;
uchar *start= NULL, *p;
if (!MARIADB_STMT_BULK_SUPPORTED(stmt) && stmt->array_size > 0)
{
stmt_set_error(stmt, CR_FUNCTION_NOT_SUPPORTED, SQLSTATE_UNKNOWN,
CER(CR_FUNCTION_NOT_SUPPORTED), "Bulk operation");
return NULL;
}
/* preallocate length bytes */
/* check: gr */
if (!(start= p= (uchar *)malloc(length)))
goto mem_error;
int4store(p, stmt->stmt_id);
p += STMT_ID_LENGTH;
/* flags is 4 bytes, we store just 1 */
int1store(p, (unsigned char) stmt->flags);
p++;
if (MARIADB_STMT_BULK_SUPPORTED(stmt) && stmt->array_size)
num_rows= stmt->array_size;
int4store(p, num_rows);
p+= 4;
if (!stmt->param_count && stmt->prebind_params)
stmt->param_count= stmt->prebind_params;
if (stmt->param_count)
{
if (!stmt->array_size)
{
size_t null_count= (stmt->param_count + 7) / 8;
free_bytes= length - (p - start);
if (null_count + 20 > free_bytes)
{
size_t offset= p - start;
length+= offset + null_count + 20;
if (!(start= (uchar *)realloc(start, length)))
goto mem_error;
p= start + offset;
}
null_byte_offset= p - start;
memset(p, 0, null_count);
p += null_count;
}
int1store(p, stmt->send_types_to_server);
p++;
free_bytes= length - (p - start);
/* Store type information:
2 bytes per type
*/
if (stmt->send_types_to_server)
{
if (free_bytes < stmt->param_count * 2 + 20)
{
size_t offset= p - start;
length= offset + stmt->param_count * 2 + 20;
if (!(start= (uchar *)realloc(start, length)))
goto mem_error;
p= start + offset;
}
for (i = 0; i < stmt->param_count; i++)
{
/* this differs from mysqlnd, c api supports unsinged !! */
uint buffer_type= stmt->params[i].buffer_type | (stmt->params[i].is_unsigned ? 32768 : 0);
/* check if parameter requires indicator variable */
if (MARIADB_STMT_BULK_SUPPORTED(stmt) &&
(stmt->params[i].u.indicator || stmt->params[i].buffer_type == MYSQL_TYPE_NULL))
buffer_type|= 16384;
int2store(p, buffer_type);
p+= 2;
}
}
/* calculate data size */
for (j=0; j < num_rows; j++)
{
for (i=0; i < stmt->param_count; i++)
{
size_t size= 0;
my_bool has_data= TRUE;
char indicator= 0;
if (MARIADB_STMT_BULK_SUPPORTED(stmt) &&
(stmt->params[i].u.indicator || stmt->params[i].buffer_type == MYSQL_TYPE_NULL))
{
if (stmt->params[i].buffer_type == MYSQL_TYPE_NULL)
{
indicator= STMT_INDICATOR_NULL;
}
else
indicator= ma_get_indicator(stmt, i, j);
/* check if we need to send data */
if (indicator > 0)
has_data= FALSE;
size= 1;
}
if (stmt->params[i].long_data_used)
{
has_data= FALSE;
stmt->params[i].long_data_used= 0;
}
if (has_data)
{
switch (stmt->params[i].buffer_type) {
case MYSQL_TYPE_NULL:
if (MARIADB_STMT_BULK_SUPPORTED(stmt))
indicator= STMT_INDICATOR_NULL;
has_data= FALSE;
break;
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
case MYSQL_TYPE_JSON:
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_NEWDECIMAL:
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_NEWDATE:
case MYSQL_TYPE_ENUM:
case MYSQL_TYPE_BIT:
case MYSQL_TYPE_SET:
size+= 5; /* max 8 bytes for size */
if (indicator == STMT_INDICATOR_NTS ||
(!stmt->row_size && ma_get_length(stmt,i,j) == -1))
size+= strlen(ma_get_buffer_offset(stmt,
stmt->params[i].buffer_type,
stmt->params[i].buffer,j));
else
size+= (size_t)ma_get_length(stmt, i, j);
break;
default:
size+= mysql_ps_fetch_functions[stmt->params[i].buffer_type].pack_len;
break;
}
}
free_bytes= length - (p - start);
if (free_bytes < size + 20)
{
size_t offset= p - start;
length= MAX(2 * length, offset + size + 20);
if (!(start= (uchar *)realloc(start, length)))
goto mem_error;
p= start + offset;
}
if ((indicator != STMT_INDICATOR_DEFAULT && indicator != STMT_INDICATOR_IGNORE) &&
((stmt->params[i].is_null && *stmt->params[i].is_null) ||
stmt->params[i].buffer_type == MYSQL_TYPE_NULL ||
!stmt->params[i].buffer))
{
has_data= FALSE;
if (!stmt->array_size)
(start + null_byte_offset)[i/8] |= (unsigned char) (1 << (i & 7));
else
indicator= STMT_INDICATOR_NULL;
}
if (MARIADB_STMT_BULK_SUPPORTED(stmt) &&
(indicator || stmt->params[i].u.indicator))
{
int1store(p, indicator > 0 ? indicator : 0);
p++;
}
if (has_data)
{
store_param(stmt, i, &p, j);
}
}
}
}
stmt->send_types_to_server= 0;
*request_len = (size_t)(p - start);
return start;
mem_error:
SET_CLIENT_STMT_ERROR(stmt, CR_OUT_OF_MEMORY, SQLSTATE_UNKNOWN, 0);
free(start);
*request_len= 0;
return NULL;
}
/* }}} */
/*!
*******************************************************************************
\fn unsigned long long mysql_stmt_affected_rows
\brief returns the number of affected rows from last mysql_stmt_execute
call
\param[in] stmt The statement handle
*******************************************************************************
*/
unsigned long long STDCALL mysql_stmt_affected_rows(MYSQL_STMT *stmt)
{
return stmt->upsert_status.affected_rows;
}
my_bool STDCALL mysql_stmt_attr_get(MYSQL_STMT *stmt, enum enum_stmt_attr_type attr_type, void *value)
{
switch (attr_type) {
case STMT_ATTR_UPDATE_MAX_LENGTH:
*(my_bool *)value= stmt->update_max_length;
break;
case STMT_ATTR_CURSOR_TYPE:
*(unsigned long *)value= stmt->flags;
break;
case STMT_ATTR_PREFETCH_ROWS:
*(unsigned long *)value= stmt->prefetch_rows;
break;
case STMT_ATTR_PREBIND_PARAMS:
*(unsigned int *)value= stmt->prebind_params;
break;
case STMT_ATTR_ARRAY_SIZE:
*(unsigned int *)value= stmt->array_size;
break;
case STMT_ATTR_ROW_SIZE:
*(size_t *)value= stmt->row_size;
break;
default:
return(1);
}
return(0);
}
my_bool STDCALL mysql_stmt_attr_set(MYSQL_STMT *stmt, enum enum_stmt_attr_type attr_type, const void *value)
{
switch (attr_type) {
case STMT_ATTR_UPDATE_MAX_LENGTH:
stmt->update_max_length= *(my_bool *)value;
break;
case STMT_ATTR_CURSOR_TYPE:
if (*(ulong *)value > (unsigned long) CURSOR_TYPE_READ_ONLY)
{
SET_CLIENT_STMT_ERROR(stmt, CR_NOT_IMPLEMENTED, SQLSTATE_UNKNOWN, 0);
return(1);
}
stmt->flags = *(ulong *)value;
break;
case STMT_ATTR_PREFETCH_ROWS:
if (*(ulong *)value == 0)
*(long *)value= MYSQL_DEFAULT_PREFETCH_ROWS;
else
stmt->prefetch_rows= *(long *)value;
break;
case STMT_ATTR_PREBIND_PARAMS:
if (stmt->state > MYSQL_STMT_INITTED)
{
mysql_stmt_internal_reset(stmt, 1);
net_stmt_close(stmt, 0);
stmt->state= MYSQL_STMT_INITTED;
stmt->params= 0;
}
stmt->prebind_params= *(unsigned int *)value;
break;
case STMT_ATTR_ARRAY_SIZE:
stmt->array_size= *(unsigned int *)value;
break;
case STMT_ATTR_ROW_SIZE:
stmt->row_size= *(size_t *)value;
break;
default:
SET_CLIENT_STMT_ERROR(stmt, CR_NOT_IMPLEMENTED, SQLSTATE_UNKNOWN, 0);
return(1);
}
return(0);
}
my_bool STDCALL mysql_stmt_bind_param(MYSQL_STMT *stmt, MYSQL_BIND *bind)
{
MYSQL *mysql= stmt->mysql;
if (!mysql)
{
SET_CLIENT_STMT_ERROR(stmt, CR_SERVER_LOST, SQLSTATE_UNKNOWN, 0);
return(1);
}
/* If number of parameters was specified via mysql_stmt_attr_set we need to realloc
them, e.g. for mariadb_stmt_execute_direct()
*/
if ((stmt->state < MYSQL_STMT_PREPARED || stmt->state >= MYSQL_STMT_EXECUTED) &&
stmt->prebind_params > 0)
{
if (!stmt->params && stmt->prebind_params)
{
if (!(stmt->params= (MYSQL_BIND *)ma_alloc_root(&stmt->mem_root, stmt->prebind_params * sizeof(MYSQL_BIND))))
{
SET_CLIENT_STMT_ERROR(stmt, CR_OUT_OF_MEMORY, SQLSTATE_UNKNOWN, 0);
return(1);
}
memset(stmt->params, '\0', stmt->prebind_params * sizeof(MYSQL_BIND));
}
stmt->param_count= stmt->prebind_params;
}
else if (stmt->state < MYSQL_STMT_PREPARED) {
SET_CLIENT_STMT_ERROR(stmt, CR_NO_PREPARE_STMT, SQLSTATE_UNKNOWN, 0);
return(1);
}
if (stmt->param_count && bind)
{
uint i;
memcpy(stmt->params, bind, sizeof(MYSQL_BIND) * stmt->param_count);
stmt->send_types_to_server= 1;
for (i=0; i < stmt->param_count; i++)
{
if (stmt->mysql->methods->db_supported_buffer_type &&
!stmt->mysql->methods->db_supported_buffer_type(stmt->params[i].buffer_type))
{
SET_CLIENT_STMT_ERROR(stmt, CR_UNSUPPORTED_PARAM_TYPE, SQLSTATE_UNKNOWN, 0);
return(1);
}
if (!stmt->params[i].is_null)
stmt->params[i].is_null= &is_not_null;
if (stmt->params[i].long_data_used)
stmt->params[i].long_data_used= 0;
if (!stmt->params[i].length)
stmt->params[i].length= &stmt->params[i].buffer_length;
switch(stmt->params[i].buffer_type) {
case MYSQL_TYPE_NULL:
stmt->params[i].is_null= &is_null;