-
Notifications
You must be signed in to change notification settings - Fork 7.8k
/
Copy pathmysqlnd_ps.c
2436 lines (2108 loc) · 72.6 KB
/
mysqlnd_ps.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
/*
+----------------------------------------------------------------------+
| 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> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_result.h"
#include "mysqlnd_result_meta.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_block_alloc.h"
#define MYSQLND_SILENT
const char * const mysqlnd_not_bound_as_blob = "Can't send long data for non-string/non-binary data types";
const char * const mysqlnd_stmt_not_prepared = "Statement not prepared";
static struct st_mysqlnd_stmt_methods *mysqlnd_stmt_methods;
/* Exported by mysqlnd_ps_codec.c */
enum_func_status mysqlnd_stmt_execute_generate_request(MYSQLND_STMT * const s, zend_uchar ** request, size_t *request_len, zend_bool * free_buffer TSRMLS_DC);
enum_func_status mysqlnd_fetch_stmt_row_buffered(MYSQLND_RES *result, void *param,
unsigned int flags,
zend_bool *fetched_anything TSRMLS_DC);
enum_func_status mysqlnd_fetch_stmt_row_cursor(MYSQLND_RES *result, void *param,
unsigned int flags,
zend_bool *fetched_anything TSRMLS_DC);
static void mysqlnd_stmt_separate_result_bind(MYSQLND_STMT * const stmt TSRMLS_DC);
static void mysqlnd_stmt_separate_one_result_bind(MYSQLND_STMT * const stmt, unsigned int param_no TSRMLS_DC);
/* {{{ mysqlnd_stmt::store_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, store_result)(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND * conn;
MYSQLND_RES * result;
zend_bool to_cache = FALSE;
DBG_ENTER("mysqlnd_stmt::store_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(NULL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
conn = stmt->conn;
/* be compliant with libmysql - NULL will turn */
if (!stmt->field_count) {
DBG_RETURN(NULL);
}
if (stmt->cursor_exists) {
/* Silently convert buffered to unbuffered, for now */
DBG_RETURN(s->m->use_result(s TSRMLS_CC));
}
/* Nothing to store for UPSERT/LOAD DATA*/
if (CONN_GET_STATE(conn) != CONN_FETCHING_DATA ||
stmt->state != MYSQLND_STMT_WAITING_USE_OR_STORE)
{
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(NULL);
}
stmt->default_rset_handler = s->m->store_result;
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_PS_BUFFERED_SETS);
result = stmt->result;
result->type = MYSQLND_RES_PS_BUF;
result->m.fetch_row = mysqlnd_fetch_stmt_row_buffered;
result->m.fetch_lengths = NULL;/* makes no sense */
result->result_set_memory_pool = mysqlnd_mempool_create(MYSQLND_G(mempool_default_size) TSRMLS_CC);
ret = result->m.store_result_fetch_data(conn, result, result->meta, TRUE, to_cache TSRMLS_CC);
if (PASS == ret) {
/* libmysql API docs say it should be so for SELECT statements */
stmt->upsert_status.affected_rows = stmt->result->stored_data->row_count;
stmt->state = MYSQLND_STMT_USE_OR_STORE_CALLED;
} else {
conn->error_info = result->stored_data->error_info;
stmt->result->m.free_result_contents(stmt->result TSRMLS_CC);
mnd_efree(stmt->result);
stmt->result = NULL;
stmt->state = MYSQLND_STMT_PREPARED;
}
DBG_RETURN(result);
}
/* }}} */
/* {{{ mysqlnd_stmt::get_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, get_result)(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND * conn;
MYSQLND_RES *result;
DBG_ENTER("mysqlnd_stmt::get_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(NULL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
conn = stmt->conn;
/* be compliant with libmysql - NULL will turn */
if (!stmt->field_count) {
DBG_RETURN(NULL);
}
if (stmt->cursor_exists) {
/* Silently convert buffered to unbuffered, for now */
DBG_RETURN(s->m->use_result(s TSRMLS_CC));
}
/* Nothing to store for UPSERT/LOAD DATA*/
if (CONN_GET_STATE(conn) != CONN_FETCHING_DATA || stmt->state != MYSQLND_STMT_WAITING_USE_OR_STORE) {
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(NULL);
}
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_BUFFERED_SETS);
do {
result = conn->m->result_init(stmt->result->field_count, stmt->persistent TSRMLS_CC);
if (!result) {
SET_OOM_ERROR(stmt->conn->error_info);
break;
}
result->meta = stmt->result->meta->m->clone_metadata(stmt->result->meta, FALSE TSRMLS_CC);
if (!result->meta) {
SET_OOM_ERROR(stmt->conn->error_info);
break;
}
if ((result = result->m.store_result(result, conn, TRUE TSRMLS_CC))) {
stmt->upsert_status.affected_rows = result->stored_data->row_count;
stmt->state = MYSQLND_STMT_PREPARED;
result->type = MYSQLND_RES_PS_BUF;
} else {
stmt->error_info = conn->error_info;
stmt->state = MYSQLND_STMT_PREPARED;
break;
}
DBG_RETURN(result);
} while (0);
if (result) {
result->m.free_result(result, TRUE TSRMLS_CC);
}
DBG_RETURN(NULL);
}
/* }}} */
/* {{{ mysqlnd_stmt::more_results */
static zend_bool
MYSQLND_METHOD(mysqlnd_stmt, more_results)(const MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
DBG_ENTER("mysqlnd_stmt::more_results");
/* (conn->state == CONN_NEXT_RESULT_PENDING) too */
DBG_RETURN((stmt && stmt->conn && (stmt->conn->upsert_status.server_status &
SERVER_MORE_RESULTS_EXISTS))?
TRUE:
FALSE);
}
/* }}} */
/* {{{ mysqlnd_stmt::next_result */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, next_result)(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND * conn;
DBG_ENTER("mysqlnd_stmt::next_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(FAIL);
}
conn = stmt->conn;
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
if (CONN_GET_STATE(conn) != CONN_NEXT_RESULT_PENDING || !(conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS)) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("server_status=%u cursor=%u", stmt->upsert_status.server_status, stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
/* Free space for next result */
s->m->free_stmt_content(s TSRMLS_CC);
{
enum_func_status ret = s->m->parse_execute_response(s TSRMLS_CC);
DBG_RETURN(ret);
}
}
/* }}} */
/* {{{ mysqlnd_stmt_skip_metadata */
static enum_func_status
mysqlnd_stmt_skip_metadata(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
/* Follows parameter metadata, we have just to skip it, as libmysql does */
unsigned int i = 0;
enum_func_status ret = FAIL;
MYSQLND_PACKET_RES_FIELD * field_packet;
DBG_ENTER("mysqlnd_stmt_skip_metadata");
if (!stmt || !stmt->conn || !stmt->conn->protocol) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
field_packet = stmt->conn->protocol->m.get_result_field_packet(stmt->conn->protocol, FALSE TSRMLS_CC);
if (!field_packet) {
SET_OOM_ERROR(stmt->error_info);
SET_OOM_ERROR(stmt->conn->error_info);
} else {
ret = PASS;
field_packet->skip_parsing = TRUE;
for (;i < stmt->param_count; i++) {
if (FAIL == PACKET_READ(field_packet, stmt->conn)) {
ret = FAIL;
break;
}
}
PACKET_FREE(field_packet);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt_read_prepare_response */
static enum_func_status
mysqlnd_stmt_read_prepare_response(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_PREPARE_RESPONSE * prepare_resp;
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_stmt_read_prepare_response");
if (!stmt || !stmt->conn || !stmt->conn->protocol) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
prepare_resp = stmt->conn->protocol->m.get_prepare_response_packet(stmt->conn->protocol, FALSE TSRMLS_CC);
if (!prepare_resp) {
SET_OOM_ERROR(stmt->error_info);
SET_OOM_ERROR(stmt->conn->error_info);
goto done;
}
if (FAIL == PACKET_READ(prepare_resp, stmt->conn)) {
goto done;
}
if (0xFF == prepare_resp->error_code) {
stmt->error_info = stmt->conn->error_info = prepare_resp->error_info;
goto done;
}
ret = PASS;
stmt->stmt_id = prepare_resp->stmt_id;
stmt->warning_count = stmt->conn->upsert_status.warning_count = prepare_resp->warning_count;
stmt->field_count = stmt->conn->field_count = prepare_resp->field_count;
stmt->param_count = prepare_resp->param_count;
done:
PACKET_FREE(prepare_resp);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt_prepare_read_eof */
static enum_func_status
mysqlnd_stmt_prepare_read_eof(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_EOF * fields_eof;
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_stmt_prepare_read_eof");
if (!stmt || !stmt->conn || !stmt->conn->protocol) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
fields_eof = stmt->conn->protocol->m.get_eof_packet(stmt->conn->protocol, FALSE TSRMLS_CC);
if (!fields_eof) {
SET_OOM_ERROR(stmt->error_info);
SET_OOM_ERROR(stmt->conn->error_info);
} else {
if (FAIL == (ret = PACKET_READ(fields_eof, stmt->conn))) {
if (stmt->result) {
stmt->result->m.free_result_contents(stmt->result TSRMLS_CC);
mnd_efree(stmt->result);
memset(stmt, 0, sizeof(MYSQLND_STMT_DATA));
stmt->state = MYSQLND_STMT_INITTED;
}
} else {
stmt->upsert_status.server_status = fields_eof->server_status;
stmt->upsert_status.warning_count = fields_eof->warning_count;
stmt->state = MYSQLND_STMT_PREPARED;
}
PACKET_FREE(fields_eof);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt::prepare */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, prepare)(MYSQLND_STMT * const s, const char * const query, unsigned int query_len TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_STMT * s_to_prepare = s;
MYSQLND_STMT_DATA * stmt_to_prepare = stmt;
DBG_ENTER("mysqlnd_stmt::prepare");
if (!stmt || !stmt->conn) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
SET_ERROR_AFF_ROWS(stmt);
SET_ERROR_AFF_ROWS(stmt->conn);
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
if (stmt->state > MYSQLND_STMT_INITTED) {
/* See if we have to clean the wire */
if (stmt->state == MYSQLND_STMT_WAITING_USE_OR_STORE) {
/* Do implicit use_result and then flush the result */
stmt->default_rset_handler = s->m->use_result;
stmt->default_rset_handler(s TSRMLS_CC);
}
/* No 'else' here please :) */
if (stmt->state > MYSQLND_STMT_WAITING_USE_OR_STORE && stmt->result) {
stmt->result->m.skip_result(stmt->result TSRMLS_CC);
}
/*
Create a new test statement, which we will prepare, but if anything
fails, we will scrap it.
*/
s_to_prepare = stmt->conn->m->stmt_init(stmt->conn TSRMLS_CC);
if (!s_to_prepare) {
goto fail;
}
stmt_to_prepare = s_to_prepare->data;
}
if (FAIL == stmt_to_prepare->conn->m->simple_command(stmt_to_prepare->conn, COM_STMT_PREPARE, (const zend_uchar *) query, query_len, PROT_LAST, FALSE, TRUE TSRMLS_CC) ||
FAIL == mysqlnd_stmt_read_prepare_response(s_to_prepare TSRMLS_CC))
{
goto fail;
}
if (stmt_to_prepare->param_count) {
if (FAIL == mysqlnd_stmt_skip_metadata(s_to_prepare TSRMLS_CC) ||
FAIL == mysqlnd_stmt_prepare_read_eof(s_to_prepare TSRMLS_CC))
{
goto fail;
}
}
/*
Read metadata only if there is actual result set.
Beware that SHOW statements bypass the PS framework and thus they send
no metadata at prepare.
*/
if (stmt_to_prepare->field_count) {
MYSQLND_RES * result = stmt->conn->m->result_init(stmt_to_prepare->field_count, stmt_to_prepare->persistent TSRMLS_CC);
if (!result) {
SET_OOM_ERROR(stmt->conn->error_info);
goto fail;
}
/* Allocate the result now as it is needed for the reading of metadata */
stmt_to_prepare->result = result;
result->conn = stmt_to_prepare->conn->m->get_reference(stmt_to_prepare->conn TSRMLS_CC);
result->type = MYSQLND_RES_PS_BUF;
if (FAIL == result->m.read_result_metadata(result, stmt_to_prepare->conn TSRMLS_CC) ||
FAIL == mysqlnd_stmt_prepare_read_eof(s_to_prepare TSRMLS_CC))
{
goto fail;
}
}
if (stmt_to_prepare != stmt) {
/* swap */
size_t real_size = sizeof(MYSQLND_STMT) + mysqlnd_plugin_count() * sizeof(void *);
char * tmp_swap = mnd_malloc(real_size);
memcpy(tmp_swap, s, real_size);
memcpy(s, s_to_prepare, real_size);
memcpy(s_to_prepare, tmp_swap, real_size);
mnd_free(tmp_swap);
{
MYSQLND_STMT_DATA * tmp_swap_data = stmt_to_prepare;
stmt_to_prepare = stmt;
stmt = tmp_swap_data;
}
s_to_prepare->m->dtor(s_to_prepare, TRUE TSRMLS_CC);
}
stmt->state = MYSQLND_STMT_PREPARED;
DBG_INF("PASS");
DBG_RETURN(PASS);
fail:
if (stmt_to_prepare != stmt && s_to_prepare) {
s_to_prepare->m->dtor(s_to_prepare, TRUE TSRMLS_CC);
}
stmt->state = MYSQLND_STMT_INITTED;
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
/* }}} */
/* {{{ mysqlnd_stmt_execute_parse_response */
static enum_func_status
mysqlnd_stmt_execute_parse_response(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND * conn;
DBG_ENTER("mysqlnd_stmt_execute_parse_response");
if (!stmt || !stmt->conn) {
DBG_RETURN(FAIL);
}
conn = stmt->conn;
CONN_SET_STATE(conn, CONN_QUERY_SENT);
ret = mysqlnd_query_read_result_set_header(stmt->conn, s TSRMLS_CC);
if (ret == FAIL) {
stmt->error_info = conn->error_info;
stmt->upsert_status.affected_rows = conn->upsert_status.affected_rows;
if (CONN_GET_STATE(conn) == CONN_QUIT_SENT) {
/* close the statement here, the connection has been closed */
}
stmt->state = MYSQLND_STMT_PREPARED;
stmt->send_types_to_server = 1;
} else {
/*
stmt->send_types_to_server has already been set to 0 in
mysqlnd_stmt_execute_generate_request / mysqlnd_stmt_execute_store_params
In case there is a situation in which binding was done for integer and the
value is > LONG_MAX or < LONG_MIN, there is string conversion and we have
to resend the types. Next execution will also need to resend the type.
*/
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
stmt->upsert_status = conn->upsert_status;
stmt->state = MYSQLND_STMT_EXECUTED;
if (conn->last_query_type == QUERY_UPSERT || conn->last_query_type == QUERY_LOAD_LOCAL) {
DBG_INF("PASS");
DBG_RETURN(PASS);
}
stmt->result->type = MYSQLND_RES_PS_BUF;
if (!stmt->result->conn) {
/*
For SHOW we don't create (bypasses PS in server)
a result set at prepare and thus a connection was missing
*/
stmt->result->conn = stmt->conn->m->get_reference(stmt->conn TSRMLS_CC);
}
/* Update stmt->field_count as SHOW sets it to 0 at prepare */
stmt->field_count = stmt->result->field_count = conn->field_count;
stmt->result->lengths = NULL;
if (stmt->field_count) {
stmt->state = MYSQLND_STMT_WAITING_USE_OR_STORE;
/*
We need to set this because the user might not call
use_result() or store_result() and we should be able to scrap the
data on the line, if he just decides to close the statement.
*/
DBG_INF_FMT("server_status=%u cursor=%u", stmt->upsert_status.server_status,
stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
if (stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS) {
DBG_INF("cursor exists");
stmt->cursor_exists = TRUE;
CONN_SET_STATE(conn, CONN_READY);
/* Only cursor read */
stmt->default_rset_handler = s->m->use_result;
DBG_INF("use_result");
} else if (stmt->flags & CURSOR_TYPE_READ_ONLY) {
DBG_INF("asked for cursor but got none");
/*
We have asked for CURSOR but got no cursor, because the condition
above is not fulfilled. Then...
This is a single-row result set, a result set with no rows, EXPLAIN,
SHOW VARIABLES, or some other command which either a) bypasses the
cursors framework in the server and writes rows directly to the
network or b) is more efficient if all (few) result set rows are
precached on client and server's resources are freed.
*/
/* preferred is buffered read */
stmt->default_rset_handler = s->m->store_result;
DBG_INF("store_result");
} else {
DBG_INF("no cursor");
/* preferred is unbuffered read */
stmt->default_rset_handler = s->m->use_result;
DBG_INF("use_result");
}
}
}
#ifndef MYSQLND_DONT_SKIP_OUT_PARAMS_RESULTSET
if (stmt->upsert_status.server_status & SERVER_PS_OUT_PARAMS) {
s->m->free_stmt_content(s TSRMLS_CC);
DBG_INF("PS OUT Variable RSet, skipping");
/* OUT params result set. Skip for now to retain compatibility */
ret = mysqlnd_stmt_execute_parse_response(s TSRMLS_CC);
}
#endif
DBG_INF(ret == PASS? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt::execute */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, execute)(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND * conn;
zend_uchar *request = NULL;
size_t request_len;
zend_bool free_request;
DBG_ENTER("mysqlnd_stmt::execute");
if (!stmt || !stmt->conn) {
DBG_RETURN(FAIL);
}
conn = stmt->conn;
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
SET_ERROR_AFF_ROWS(stmt);
SET_ERROR_AFF_ROWS(stmt->conn);
if (stmt->result && stmt->state >= MYSQLND_STMT_PREPARED && stmt->field_count) {
/*
We don need to copy the data from the buffers which we will clean.
Because it has already been copied. See
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
*/
#ifdef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
if (stmt->result_bind &&
stmt->result_zvals_separated_once == TRUE &&
stmt->state >= MYSQLND_STMT_USER_FETCHING)
{
/*
We need to copy the data from the buffers which we will clean.
The bound variables point to them only if the user has started
to fetch data (MYSQLND_STMT_USER_FETCHING).
We need to check 'result_zvals_separated_once' or we will leak
in the following scenario
prepare("select 1 from dual");
execute();
fetch(); <-- no binding, but that's not a problem
bind_result();
execute(); <-- here we will leak because we separate without need
*/
unsigned int i;
for (i = 0; i < stmt->field_count; i++) {
if (stmt->result_bind[i].bound == TRUE) {
zval_copy_ctor(stmt->result_bind[i].zv);
}
}
}
#endif
/*
If right after execute() we have to call the appropriate
use_result() or store_result() and clean.
*/
if (stmt->state == MYSQLND_STMT_WAITING_USE_OR_STORE) {
DBG_INF("fetching result set header");
/* Do implicit use_result and then flush the result */
stmt->default_rset_handler = s->m->use_result;
stmt->default_rset_handler(s TSRMLS_CC);
}
if (stmt->state > MYSQLND_STMT_WAITING_USE_OR_STORE) {
DBG_INF("skipping result");
/* Flush if anything is left and unbuffered set */
stmt->result->m.skip_result(stmt->result TSRMLS_CC);
}
if (stmt->state > MYSQLND_STMT_PREPARED) {
/* As the buffers have been freed, we should go back to PREPARED */
stmt->state = MYSQLND_STMT_PREPARED;
}
/*
Executed, but the user hasn't started to fetch
This will clean also the metadata, but after the EXECUTE call we will
have it again.
*/
stmt->result->m.free_result_buffers(stmt->result TSRMLS_CC);
} else if (stmt->state < MYSQLND_STMT_PREPARED) {
/* Only initted - error */
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE,
mysqlnd_out_of_sync);
SET_STMT_ERROR(stmt, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
if (stmt->param_count) {
unsigned int i, not_bound = 0;
if (!stmt->param_bind) {
SET_STMT_ERROR(stmt, CR_PARAMS_NOT_BOUND, UNKNOWN_SQLSTATE,
"No data supplied for parameters in prepared statement");
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
for (i = 0; i < stmt->param_count; i++) {
if (stmt->param_bind[i].zv == NULL) {
not_bound++;
}
}
if (not_bound) {
char * msg;
spprintf(&msg, 0, "No data supplied for %u parameter%s in prepared statement",
not_bound, not_bound>1 ?"s":"");
SET_STMT_ERROR(stmt, CR_PARAMS_NOT_BOUND, UNKNOWN_SQLSTATE, msg);
if (msg) {
efree(msg); /* allocated by spprintf */
}
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
}
ret = s->m->generate_execute_request(s, &request, &request_len, &free_request TSRMLS_CC);
if (ret == PASS) {
/* support for buffer types should be added here ! */
ret = stmt->conn->m->simple_command(stmt->conn, COM_STMT_EXECUTE, request, request_len,
PROT_LAST /* we will handle the response packet*/,
FALSE, FALSE TSRMLS_CC);
} else {
SET_STMT_ERROR(stmt, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, "Couldn't generate the request. Possibly OOM.");
}
if (free_request) {
mnd_efree(request);
}
if (ret == FAIL) {
stmt->error_info = conn->error_info;
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
stmt->execute_count++;
ret = s->m->parse_execute_response(s TSRMLS_CC);
DBG_INF_FMT("server_status=%u cursor=%u", stmt->upsert_status.server_status, stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
if (ret == PASS && conn->last_query_type == QUERY_UPSERT && stmt->upsert_status.affected_rows) {
MYSQLND_INC_CONN_STATISTIC_W_VALUE(conn->stats, STAT_ROWS_AFFECTED_PS, stmt->upsert_status.affected_rows);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_fetch_stmt_row_buffered */
enum_func_status
mysqlnd_fetch_stmt_row_buffered(MYSQLND_RES *result, void *param, unsigned int flags, zend_bool *fetched_anything TSRMLS_DC)
{
MYSQLND_STMT * s = (MYSQLND_STMT *) param;
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_RES_BUFFERED *set = result->stored_data;
unsigned int field_count = result->meta->field_count;
DBG_ENTER("mysqlnd_fetch_stmt_row_buffered");
*fetched_anything = FALSE;
DBG_INF_FMT("stmt=%lu", stmt != NULL ? stmt->stmt_id : 0L);
/* If we haven't read everything */
if (set->data_cursor &&
(set->data_cursor - set->data) < (set->row_count * field_count))
{
/* The user could have skipped binding - don't crash*/
if (stmt->result_bind) {
unsigned int i;
MYSQLND_RES_METADATA * meta = result->meta;
zval **current_row = set->data_cursor;
if (NULL == current_row[0]) {
uint64_t row_num = (set->data_cursor - set->data) / field_count;
enum_func_status rc = result->m.row_decoder(set->row_buffers[row_num],
current_row,
meta->field_count,
meta->fields,
result->stored_data->persistent,
result->conn->options.numeric_and_datetime_as_unicode,
result->conn->options.int_and_float_native,
result->conn->stats TSRMLS_CC);
if (PASS != rc) {
DBG_RETURN(FAIL);
}
set->initialized_rows++;
if (stmt->update_max_length) {
for (i = 0; i < result->field_count; i++) {
/*
NULL fields are 0 length, 0 is not more than 0
String of zero size, definitely can't be the next max_length.
Thus for NULL and zero-length we are quite efficient.
*/
if (Z_TYPE_P(current_row[i]) >= IS_STRING) {
unsigned long len = Z_STRLEN_P(current_row[i]);
if (meta->fields[i].max_length < len) {
meta->fields[i].max_length = len;
}
}
}
}
}
for (i = 0; i < result->field_count; i++) {
/* Clean what we copied last time */
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
if (stmt->result_bind[i].zv) {
zval_dtor(stmt->result_bind[i].zv);
}
#endif
/* copy the type */
if (stmt->result_bind[i].bound == TRUE) {
DBG_INF_FMT("i=%u type=%u", i, Z_TYPE_P(current_row[i]));
if (Z_TYPE_P(current_row[i]) != IS_NULL) {
/*
Copy the value.
Pre-condition is that the zvals in the result_bind buffer
have been ZVAL_NULL()-ed or to another simple type
(int, double, bool but not string). Because of the reference
counting the user can't delete the strings the variables point to.
*/
Z_TYPE_P(stmt->result_bind[i].zv) = Z_TYPE_P(current_row[i]);
stmt->result_bind[i].zv->value = current_row[i]->value;
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
zval_copy_ctor(stmt->result_bind[i].zv);
#endif
} else {
ZVAL_NULL(stmt->result_bind[i].zv);
}
}
}
}
set->data_cursor += field_count;
*fetched_anything = TRUE;
/* buffered result sets don't have a connection */
MYSQLND_INC_GLOBAL_STATISTIC(STAT_ROWS_FETCHED_FROM_CLIENT_PS_BUF);
DBG_INF("row fetched");
} else {
set->data_cursor = NULL;
DBG_INF("no more data");
}
DBG_INF("PASS");
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_stmt_fetch_row_unbuffered */
static enum_func_status
mysqlnd_stmt_fetch_row_unbuffered(MYSQLND_RES *result, void *param, unsigned int flags, zend_bool *fetched_anything TSRMLS_DC)
{
enum_func_status ret;
MYSQLND_STMT * s = (MYSQLND_STMT *) param;
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_ROW * row_packet;
DBG_ENTER("mysqlnd_stmt_fetch_row_unbuffered");
*fetched_anything = FALSE;
if (result->unbuf->eof_reached) {
/* No more rows obviously */
DBG_INF("EOF already reached");
DBG_RETURN(PASS);
}
if (CONN_GET_STATE(result->conn) != CONN_FETCHING_DATA) {
SET_CLIENT_ERROR(result->conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_ERR("command out of sync");
DBG_RETURN(FAIL);
}
if (!(row_packet = result->row_packet)) {
DBG_RETURN(FAIL);
}
/* Let the row packet fill our buffer and skip additional malloc + memcpy */
row_packet->skip_extraction = stmt && stmt->result_bind? FALSE:TRUE;
/*
If we skip rows (stmt == NULL || stmt->result_bind == NULL) we have to
result->m.unbuffered_free_last_data() before it. The function returns always true.
*/
if (PASS == (ret = PACKET_READ(row_packet, result->conn)) && !row_packet->eof) {
unsigned int i, field_count = result->field_count;
if (!row_packet->skip_extraction) {
result->m.unbuffered_free_last_data(result TSRMLS_CC);
result->unbuf->last_row_data = row_packet->fields;
result->unbuf->last_row_buffer = row_packet->row_buffer;
row_packet->fields = NULL;
row_packet->row_buffer = NULL;
if (PASS != result->m.row_decoder(result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
row_packet->field_count,
row_packet->fields_metadata,
FALSE,
result->conn->options.numeric_and_datetime_as_unicode,
result->conn->options.int_and_float_native,
result->conn->stats TSRMLS_CC))
{
DBG_RETURN(FAIL);
}
for (i = 0; i < field_count; i++) {
if (stmt->result_bind[i].bound == TRUE) {
zval *data = result->unbuf->last_row_data[i];
/*
stmt->result_bind[i].zv has been already destructed
in result->m.unbuffered_free_last_data()
*/
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
zval_dtor(stmt->result_bind[i].zv);
#endif
if (IS_NULL != (Z_TYPE_P(stmt->result_bind[i].zv) = Z_TYPE_P(data)) ) {
if (
(Z_TYPE_P(data) == IS_STRING
#if MYSQLND_UNICODE
|| Z_TYPE_P(data) == IS_UNICODE
#endif
)
&& (result->meta->fields[i].max_length < (unsigned long) Z_STRLEN_P(data)))
{
result->meta->fields[i].max_length = Z_STRLEN_P(data);
}
stmt->result_bind[i].zv->value = data->value;
/* copied data, thus also the ownership. Thus null data */
ZVAL_NULL(data);
}
}
}
MYSQLND_INC_CONN_STATISTIC(stmt->conn->stats, STAT_ROWS_FETCHED_FROM_CLIENT_PS_UNBUF);
} else {
DBG_INF("skipping extraction");
/*
Data has been allocated and usually result->m.unbuffered_free_last_data()
frees it but we can't call this function as it will cause problems with
the bound variables. Thus we need to do part of what it does or Zend will
report leaks.
*/
row_packet->row_buffer->free_chunk(row_packet->row_buffer TSRMLS_CC);
row_packet->row_buffer = NULL;
}
result->unbuf->row_count++;
*fetched_anything = TRUE;
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
stmt->conn->error_info = row_packet->error_info;
stmt->error_info = row_packet->error_info;
}
CONN_SET_STATE(result->conn, CONN_READY);
result->unbuf->eof_reached = TRUE; /* so next time we won't get an error */
} else if (row_packet->eof) {
DBG_INF("EOF");
/* Mark the connection as usable again */
result->unbuf->eof_reached = TRUE;
result->conn->upsert_status.warning_count = row_packet->warning_count;
result->conn->upsert_status.server_status = row_packet->server_status;
/*
result->row_packet will be cleaned when
destroying the result object
*/
if (result->conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS) {
CONN_SET_STATE(result->conn, CONN_NEXT_RESULT_PENDING);
} else {
CONN_SET_STATE(result->conn, CONN_READY);
}
}
DBG_INF_FMT("ret=%s fetched_anything=%u", ret == PASS? "PASS":"FAIL", *fetched_anything);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt::use_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, use_result)(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_RES *result;
MYSQLND * conn;
DBG_ENTER("mysqlnd_stmt::use_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(NULL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
conn = stmt->conn;
if (!stmt->field_count ||
(!stmt->cursor_exists && CONN_GET_STATE(conn) != CONN_FETCHING_DATA) ||
(stmt->cursor_exists && CONN_GET_STATE(conn) != CONN_READY) ||
(stmt->state != MYSQLND_STMT_WAITING_USE_OR_STORE))
{
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_ERR("command out of sync");
DBG_RETURN(NULL);
}
SET_EMPTY_ERROR(stmt->error_info);
MYSQLND_INC_CONN_STATISTIC(stmt->conn->stats, STAT_PS_UNBUFFERED_SETS);
result = stmt->result;
result->m.use_result(stmt->result, TRUE TSRMLS_CC);
result->m.fetch_row = stmt->cursor_exists? mysqlnd_fetch_stmt_row_cursor:
mysqlnd_stmt_fetch_row_unbuffered;
stmt->state = MYSQLND_STMT_USE_OR_STORE_CALLED;
DBG_INF_FMT("%p", result);
DBG_RETURN(result);
}
/* }}} */
#define STMT_ID_LENGTH 4
/* {{{ mysqlnd_fetch_row_cursor */