-
Notifications
You must be signed in to change notification settings - Fork 371
/
pdo_dbh.cpp
2108 lines (1794 loc) · 76.5 KB
/
pdo_dbh.cpp
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
//---------------------------------------------------------------------------------------------------------------------------------
// file: pdo_dbh.cpp
//
// Contents: Implements the PDO object for PDO_SQLSRV
//
// Microsoft Drivers 5.12 for PHP for SQL Server
// Copyright(c) Microsoft Corporation
// All rights reserved.
// MIT License
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files(the ""Software""),
// to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and / or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions :
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//---------------------------------------------------------------------------------------------------------------------------------
extern "C" {
#include "php_pdo_sqlsrv.h"
}
#include "php_pdo_sqlsrv_int.h"
#include <string>
#include <sstream>
typedef const zend_function_entry pdo_sqlsrv_function_entry;
// *** internal variables and constants ***
namespace {
const char LAST_INSERT_ID_QUERY[] = "SELECT @@IDENTITY;";
const size_t LAST_INSERT_ID_BUFF_LEN = 50; // size of the buffer to hold the string value of the last inserted id, which may be an int, bigint, decimal(p,0) or numeric(p,0)
const char SEQUENCE_CURRENT_VALUE_QUERY[] = "SELECT current_value FROM sys.sequences WHERE name=N'%s'";
const int LAST_INSERT_ID_QUERY_MAX_LEN = sizeof( SEQUENCE_CURRENT_VALUE_QUERY ) + SQL_MAX_SQLSERVERNAME + 2; // include the quotes
// List of PDO supported connection options.
namespace PDOConnOptionNames {
const char Server[] = "Server";
const char APP[] = "APP";
const char AccessToken[] = "AccessToken";
const char ApplicationIntent[] = "ApplicationIntent";
const char AttachDBFileName[] = "AttachDbFileName";
const char Authentication[] = "Authentication";
const char ColumnEncryption[] = "ColumnEncryption";
const char ConnectionPooling[] = "ConnectionPooling";
const char Language[] = "Language";
const char ConnectRetryCount[] = "ConnectRetryCount";
const char ConnectRetryInterval[] = "ConnectRetryInterval";
const char Database[] = "Database";
const char Driver[] = "Driver";
const char Encrypt[] = "Encrypt";
const char Failover_Partner[] = "Failover_Partner";
const char KeyStoreAuthentication[] = "KeyStoreAuthentication";
const char KeyStorePrincipalId[] = "KeyStorePrincipalId";
const char KeyStoreSecret[] = "KeyStoreSecret";
const char LoginTimeout[] = "LoginTimeout";
const char MARS_Option[] = "MultipleActiveResultSets";
const char MultiSubnetFailover[] = "MultiSubnetFailover";
const char QuotedId[] = "QuotedId";
const char TraceFile[] = "TraceFile";
const char TraceOn[] = "TraceOn";
const char TrustServerCertificate[] = "TrustServerCertificate";
const char TransactionIsolation[] = "TransactionIsolation";
const char TransparentNetworkIPResolution[] = "TransparentNetworkIPResolution";
const char WSID[] = "WSID";
const char ComputePool[] = "ComputePool";
const char HostNameInCertificate[] = "HostNameInCertificate";
}
enum PDO_CONN_OPTIONS {
PDO_CONN_OPTION_SERVER = SQLSRV_CONN_OPTION_DRIVER_SPECIFIC,
};
enum PDO_STMT_OPTIONS {
PDO_STMT_OPTION_ENCODING = SQLSRV_STMT_OPTION_DRIVER_SPECIFIC,
PDO_STMT_OPTION_DIRECT_QUERY,
PDO_STMT_OPTION_CURSOR_SCROLL_TYPE,
PDO_STMT_OPTION_CLIENT_BUFFER_MAX_KB_SIZE,
PDO_STMT_OPTION_EMULATE_PREPARES,
PDO_STMT_OPTION_FETCHES_NUMERIC_TYPE,
PDO_STMT_OPTION_FETCHES_DATETIME_TYPE,
PDO_STMT_OPTION_FORMAT_DECIMALS,
PDO_STMT_OPTION_DECIMAL_PLACES,
PDO_STMT_OPTION_DATA_CLASSIFICATION
};
// List of all the statement options supported by this driver.
const stmt_option PDO_STMT_OPTS[] = {
{ NULL, 0, SQLSRV_STMT_OPTION_QUERY_TIMEOUT, std::unique_ptr<stmt_option_query_timeout>( new stmt_option_query_timeout ) },
{ NULL, 0, SQLSRV_STMT_OPTION_SCROLLABLE, std::unique_ptr<stmt_option_pdo_scrollable>( new stmt_option_pdo_scrollable ) },
{ NULL, 0, PDO_STMT_OPTION_ENCODING, std::unique_ptr<stmt_option_encoding>( new stmt_option_encoding ) },
{ NULL, 0, PDO_STMT_OPTION_DIRECT_QUERY, std::unique_ptr<stmt_option_direct_query>( new stmt_option_direct_query ) },
{ NULL, 0, PDO_STMT_OPTION_CURSOR_SCROLL_TYPE, std::unique_ptr<stmt_option_cursor_scroll_type>( new stmt_option_cursor_scroll_type ) },
{ NULL, 0, PDO_STMT_OPTION_CLIENT_BUFFER_MAX_KB_SIZE, std::unique_ptr<stmt_option_buffered_query_limit>( new stmt_option_buffered_query_limit ) },
{ NULL, 0, PDO_STMT_OPTION_EMULATE_PREPARES, std::unique_ptr<stmt_option_emulate_prepares>( new stmt_option_emulate_prepares ) },
{ NULL, 0, PDO_STMT_OPTION_FETCHES_NUMERIC_TYPE, std::unique_ptr<stmt_option_fetch_numeric>( new stmt_option_fetch_numeric ) },
{ NULL, 0, PDO_STMT_OPTION_FETCHES_DATETIME_TYPE, std::unique_ptr<stmt_option_fetch_datetime>( new stmt_option_fetch_datetime ) },
{ NULL, 0, PDO_STMT_OPTION_FORMAT_DECIMALS, std::unique_ptr<stmt_option_format_decimals>( new stmt_option_format_decimals ) },
{ NULL, 0, PDO_STMT_OPTION_DECIMAL_PLACES, std::unique_ptr<stmt_option_decimal_places>( new stmt_option_decimal_places ) },
{ NULL, 0, PDO_STMT_OPTION_DATA_CLASSIFICATION, std::unique_ptr<stmt_option_data_classification>( new stmt_option_data_classification ) },
{ NULL, 0, SQLSRV_STMT_OPTION_INVALID, std::unique_ptr<stmt_option_functor>{} },
};
// boolean connection string
struct pdo_bool_conn_str_func
{
static void func( _In_ connection_option const* option, _Inout_ zval* value, sqlsrv_conn* /*conn*/, _Out_ std::string& conn_str );
};
struct pdo_txn_isolation_conn_attr_func
{
static void func( connection_option const* /*option*/, _In_ zval* value_z, _Inout_ sqlsrv_conn* conn, std::string& /*conn_str*/ );
};
struct pdo_int_conn_str_func {
static void func( _In_ connection_option const* option, _In_ zval* value, sqlsrv_conn* /*conn*/, _Out_ std::string& conn_str )
{
SQLSRV_ASSERT(Z_TYPE_P(value) == IS_STRING, "Wrong zval type for this keyword");
std::string val_str = Z_STRVAL_P( value );
conn_str += option->odbc_name;
conn_str += "={";
conn_str += val_str;
conn_str += "};";
}
};
struct pdo_encrypt_set_func
{
static void func(_In_ connection_option const* option, _Inout_ zval* value_z, sqlsrv_conn* /*conn*/, _Out_ std::string& conn_str)
{
SQLSRV_ASSERT(Z_TYPE_P(value_z) == IS_STRING, "Wrong zval type for this keyword");
std::string val_str = Z_STRVAL_P(value_z);
std::string whitespaces(" \t\f\v\n\r");
// Trim white spaces
std::size_t found = val_str.find_last_not_of(whitespaces);
if (found != std::string::npos)
val_str.erase(found + 1);
transform(val_str.begin(), val_str.end(), val_str.begin(), ::tolower);
// For backward compatibility, convert true/1 to yes
std::string attr;
if (!val_str.compare("true") || !val_str.compare("1") || !val_str.compare("yes")) {
attr = "yes";
} else if (!val_str.compare("false") || !val_str.compare("0") || !val_str.compare("no")) {
attr = "no";
} else {
// simply pass the attribute value to ODBC driver
attr = val_str;
}
conn_str += option->odbc_name;
conn_str += "={";
conn_str += attr;
conn_str += "};";
}
};
template <unsigned int Attr>
struct pdo_int_conn_attr_func {
static void func( connection_option const* /*option*/, _In_ zval* value, _Inout_ sqlsrv_conn* conn, std::string& /*conn_str*/ )
{
try {
SQLSRV_ASSERT( Z_TYPE_P( value ) == IS_STRING, "pdo_int_conn_attr_func: Unexpected zval type." );
size_t val = static_cast<size_t>( atoi( Z_STRVAL_P( value )) );
core::SQLSetConnectAttr( conn, Attr, reinterpret_cast<SQLPOINTER>( val ), SQL_IS_UINTEGER );
}
catch( core::CoreException& ) {
throw;
}
}
};
template <unsigned int Attr>
struct pdo_bool_conn_attr_func {
static void func( connection_option const* /*option*/, _Inout_ zval* value, _Inout_ sqlsrv_conn* conn, std::string& /*conn_str*/ )
{
try {
core::SQLSetConnectAttr( conn, Attr, reinterpret_cast<SQLPOINTER>( core_str_zval_is_true( value )),
SQL_IS_UINTEGER );
}
catch( core::CoreException& ) {
throw;
}
}
};
// statement options related functions
void add_stmt_option_key( _Inout_ sqlsrv_context& ctx, _In_ size_t key, _Inout_ HashTable* options_ht,
_Inout_ zval** data );
void validate_stmt_options( _Inout_ sqlsrv_context& ctx, _Inout_ zval* stmt_options, _Inout_ HashTable* pdo_stmt_options_ht );
} // namespace
// List of all connection options supported by this driver.
const connection_option PDO_CONN_OPTS[] = {
{
PDOConnOptionNames::Server,
sizeof( PDOConnOptionNames::Server ),
PDO_CONN_OPTION_SERVER,
NULL,
0,
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::APP,
sizeof( PDOConnOptionNames::APP ),
SQLSRV_CONN_OPTION_APP,
ODBCConnOptions::APP,
sizeof( ODBCConnOptions::APP ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::AccessToken,
sizeof( PDOConnOptionNames::AccessToken ),
SQLSRV_CONN_OPTION_ACCESS_TOKEN,
ODBCConnOptions::AccessToken,
sizeof( ODBCConnOptions::AccessToken),
CONN_ATTR_STRING,
access_token_set_func::func
},
{
PDOConnOptionNames::ApplicationIntent,
sizeof( PDOConnOptionNames::ApplicationIntent ),
SQLSRV_CONN_OPTION_APPLICATION_INTENT,
ODBCConnOptions::ApplicationIntent,
sizeof( ODBCConnOptions::ApplicationIntent ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::AttachDBFileName,
sizeof( PDOConnOptionNames::AttachDBFileName ),
SQLSRV_CONN_OPTION_ATTACHDBFILENAME,
ODBCConnOptions::AttachDBFileName,
sizeof( ODBCConnOptions::AttachDBFileName ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::Authentication,
sizeof( PDOConnOptionNames::Authentication ),
SQLSRV_CONN_OPTION_AUTHENTICATION,
ODBCConnOptions::Authentication,
sizeof( ODBCConnOptions::Authentication ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::ConnectionPooling,
sizeof( PDOConnOptionNames::ConnectionPooling ),
SQLSRV_CONN_OPTION_CONN_POOLING,
ODBCConnOptions::ConnectionPooling,
sizeof( ODBCConnOptions::ConnectionPooling ),
CONN_ATTR_BOOL,
conn_null_func::func
},
{
PDOConnOptionNames::Language,
sizeof( PDOConnOptionNames::Language ),
SQLSRV_CONN_OPTION_LANGUAGE,
ODBCConnOptions::Language,
sizeof( ODBCConnOptions::Language ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::Driver,
sizeof(PDOConnOptionNames::Driver),
SQLSRV_CONN_OPTION_DRIVER,
ODBCConnOptions::Driver,
sizeof(ODBCConnOptions::Driver),
CONN_ATTR_STRING,
driver_set_func::func
},
{
PDOConnOptionNames::ColumnEncryption,
sizeof(PDOConnOptionNames::ColumnEncryption),
SQLSRV_CONN_OPTION_COLUMNENCRYPTION,
ODBCConnOptions::ColumnEncryption,
sizeof(ODBCConnOptions::ColumnEncryption),
CONN_ATTR_STRING,
column_encryption_set_func::func
},
{
PDOConnOptionNames::ConnectRetryCount,
sizeof( PDOConnOptionNames::ConnectRetryCount ),
SQLSRV_CONN_OPTION_CONN_RETRY_COUNT,
ODBCConnOptions::ConnectRetryCount,
sizeof( ODBCConnOptions::ConnectRetryCount ),
CONN_ATTR_INT,
pdo_int_conn_str_func::func
},
{
PDOConnOptionNames::ConnectRetryInterval,
sizeof( PDOConnOptionNames::ConnectRetryInterval ),
SQLSRV_CONN_OPTION_CONN_RETRY_INTERVAL,
ODBCConnOptions::ConnectRetryInterval,
sizeof( ODBCConnOptions::ConnectRetryInterval ),
CONN_ATTR_INT,
pdo_int_conn_str_func::func
},
{
PDOConnOptionNames::Database,
sizeof( PDOConnOptionNames::Database ),
SQLSRV_CONN_OPTION_DATABASE,
ODBCConnOptions::Database,
sizeof( ODBCConnOptions::Database ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::Encrypt,
sizeof( PDOConnOptionNames::Encrypt ),
SQLSRV_CONN_OPTION_ENCRYPT,
ODBCConnOptions::Encrypt,
sizeof( ODBCConnOptions::Encrypt ),
CONN_ATTR_MIXED,
pdo_encrypt_set_func::func
},
{
PDOConnOptionNames::Failover_Partner,
sizeof( PDOConnOptionNames::Failover_Partner ),
SQLSRV_CONN_OPTION_FAILOVER_PARTNER,
ODBCConnOptions::Failover_Partner,
sizeof( ODBCConnOptions::Failover_Partner ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::KeyStoreAuthentication,
sizeof( PDOConnOptionNames::KeyStoreAuthentication ),
SQLSRV_CONN_OPTION_KEYSTORE_AUTHENTICATION,
ODBCConnOptions::KeyStoreAuthentication,
sizeof( ODBCConnOptions::KeyStoreAuthentication ),
CONN_ATTR_STRING,
ce_akv_str_set_func::func
},
{
PDOConnOptionNames::KeyStorePrincipalId,
sizeof( PDOConnOptionNames::KeyStorePrincipalId ),
SQLSRV_CONN_OPTION_KEYSTORE_PRINCIPAL_ID,
ODBCConnOptions::KeyStorePrincipalId,
sizeof( ODBCConnOptions::KeyStorePrincipalId ),
CONN_ATTR_STRING,
ce_akv_str_set_func::func
},
{
PDOConnOptionNames::KeyStoreSecret,
sizeof( PDOConnOptionNames::KeyStoreSecret ),
SQLSRV_CONN_OPTION_KEYSTORE_SECRET,
ODBCConnOptions::KeyStoreSecret,
sizeof( ODBCConnOptions::KeyStoreSecret ),
CONN_ATTR_STRING,
ce_akv_str_set_func::func
},
{
PDOConnOptionNames::LoginTimeout,
sizeof( PDOConnOptionNames::LoginTimeout ),
SQLSRV_CONN_OPTION_LOGIN_TIMEOUT,
ODBCConnOptions::LoginTimeout,
sizeof( ODBCConnOptions::LoginTimeout ),
CONN_ATTR_INT,
pdo_int_conn_attr_func<SQL_ATTR_LOGIN_TIMEOUT>::func
},
{
PDOConnOptionNames::MARS_Option,
sizeof( PDOConnOptionNames::MARS_Option ),
SQLSRV_CONN_OPTION_MARS,
ODBCConnOptions::MARS_ODBC,
sizeof( ODBCConnOptions::MARS_ODBC ),
CONN_ATTR_BOOL,
pdo_bool_conn_str_func::func
},
{
PDOConnOptionNames::MultiSubnetFailover,
sizeof( PDOConnOptionNames::MultiSubnetFailover ),
SQLSRV_CONN_OPTION_MULTI_SUBNET_FAILOVER,
ODBCConnOptions::MultiSubnetFailover,
sizeof( ODBCConnOptions::MultiSubnetFailover ),
CONN_ATTR_BOOL,
pdo_bool_conn_str_func::func
},
{
PDOConnOptionNames::QuotedId,
sizeof( PDOConnOptionNames::QuotedId ),
SQLSRV_CONN_OPTION_QUOTED_ID,
ODBCConnOptions::QuotedId,
sizeof( ODBCConnOptions::QuotedId ),
CONN_ATTR_BOOL,
pdo_bool_conn_str_func::func
},
{
PDOConnOptionNames::TraceFile,
sizeof( PDOConnOptionNames::TraceFile ),
SQLSRV_CONN_OPTION_TRACE_FILE,
ODBCConnOptions::TraceFile,
sizeof( ODBCConnOptions::TraceFile ),
CONN_ATTR_STRING,
str_conn_attr_func<SQL_ATTR_TRACEFILE>::func
},
{
PDOConnOptionNames::TraceOn,
sizeof( PDOConnOptionNames::TraceOn ),
SQLSRV_CONN_OPTION_TRACE_ON,
ODBCConnOptions::TraceOn,
sizeof( ODBCConnOptions::TraceOn ),
CONN_ATTR_BOOL,
pdo_bool_conn_attr_func<SQL_ATTR_TRACE>::func
},
{
PDOConnOptionNames::TransactionIsolation,
sizeof( PDOConnOptionNames::TransactionIsolation ),
SQLSRV_CONN_OPTION_TRANS_ISOLATION,
ODBCConnOptions::TransactionIsolation,
sizeof( ODBCConnOptions::TransactionIsolation ),
CONN_ATTR_INT,
pdo_txn_isolation_conn_attr_func::func
},
{
PDOConnOptionNames::TrustServerCertificate,
sizeof( PDOConnOptionNames::TrustServerCertificate ),
SQLSRV_CONN_OPTION_TRUST_SERVER_CERT,
ODBCConnOptions::TrustServerCertificate,
sizeof( ODBCConnOptions::TrustServerCertificate ),
CONN_ATTR_BOOL,
pdo_bool_conn_str_func::func
},
{
PDOConnOptionNames::TransparentNetworkIPResolution,
sizeof(PDOConnOptionNames::TransparentNetworkIPResolution),
SQLSRV_CONN_OPTION_TRANSPARENT_NETWORK_IP_RESOLUTION,
ODBCConnOptions::TransparentNetworkIPResolution,
sizeof(ODBCConnOptions::TransparentNetworkIPResolution),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::WSID,
sizeof( PDOConnOptionNames::WSID ),
SQLSRV_CONN_OPTION_WSID,
ODBCConnOptions::WSID,
sizeof( ODBCConnOptions::WSID ),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::ComputePool,
sizeof(PDOConnOptionNames::ComputePool),
SQLSRV_CONN_OPTION_COMPUTE_POOL,
ODBCConnOptions::ComputePool,
sizeof(ODBCConnOptions::ComputePool),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{
PDOConnOptionNames::HostNameInCertificate,
sizeof(PDOConnOptionNames::HostNameInCertificate),
SQLSRV_CONN_OPTION_HOSTNAME_IN_CERT,
ODBCConnOptions::HostNameInCertificate,
sizeof(ODBCConnOptions::HostNameInCertificate),
CONN_ATTR_STRING,
conn_str_append_func::func
},
{ NULL, 0, SQLSRV_CONN_OPTION_INVALID, NULL, 0 , CONN_ATTR_INVALID, NULL }, //terminate the table
};
#if PHP_VERSION_ID < 80100
// close the connection
int pdo_sqlsrv_dbh_close(_Inout_ pdo_dbh_t *dbh);
// execute queries
int pdo_sqlsrv_dbh_prepare(_Inout_ pdo_dbh_t *dbh, _In_reads_(sql_len) const char *sql,
_Inout_ size_t sql_len, _Inout_ pdo_stmt_t *stmt, _In_ zval *driver_options);
zend_long pdo_sqlsrv_dbh_do(_Inout_ pdo_dbh_t *dbh, _In_reads_bytes_(sql_len) const char *sql, _In_ size_t sql_len);
// quote a string, meaning put quotes around it and escape any quotes within it
int pdo_sqlsrv_dbh_quote(_Inout_ pdo_dbh_t* dbh, _In_reads_(unquotedlen) const char* unquoted, _In_ size_t unquotedlen, _Outptr_result_buffer_(*quotedlen) char **quoted, _Out_ size_t* quotedlen,
enum pdo_param_type paramtype);
// transaction support functions
int pdo_sqlsrv_dbh_commit(_Inout_ pdo_dbh_t *dbh);
int pdo_sqlsrv_dbh_begin(_Inout_ pdo_dbh_t *dbh);
int pdo_sqlsrv_dbh_rollback(_Inout_ pdo_dbh_t *dbh);
// attribute functions
int pdo_sqlsrv_dbh_set_attr(_Inout_ pdo_dbh_t *dbh, _In_ zend_long attr, _Inout_ zval *val);
int pdo_sqlsrv_dbh_get_attr(_Inout_ pdo_dbh_t *dbh, _In_ zend_long attr, _Inout_ zval *return_value);
// return the last id generated by an executed SQL statement
char * pdo_sqlsrv_dbh_last_id(_Inout_ pdo_dbh_t *dbh, _In_z_ const char *name, _Out_ size_t* len);
// return more information
int pdo_sqlsrv_dbh_return_error(_In_ pdo_dbh_t *dbh, _In_opt_ pdo_stmt_t *stmt, _Out_ zval *info);
#else
// close the connection
void pdo_sqlsrv_dbh_close(_Inout_ pdo_dbh_t *dbh);
// execute queries
bool pdo_sqlsrv_dbh_prepare(_Inout_ pdo_dbh_t *dbh, _In_ zend_string *sql,
_Inout_ pdo_stmt_t *stmt, _In_ zval *driver_options);
zend_long pdo_sqlsrv_dbh_do(_Inout_ pdo_dbh_t *dbh, _In_ const zend_string *sql);
// quote a string, meaning put quotes around it and escape any quotes within it
zend_string* pdo_sqlsrv_dbh_quote(_Inout_ pdo_dbh_t* dbh, _In_ const zend_string *unquoted, _In_ enum pdo_param_type paramtype);
// transaction support functions
bool pdo_sqlsrv_dbh_commit(_Inout_ pdo_dbh_t *dbh);
bool pdo_sqlsrv_dbh_begin(_Inout_ pdo_dbh_t *dbh);
bool pdo_sqlsrv_dbh_rollback(_Inout_ pdo_dbh_t *dbh);
// attribute functions
bool pdo_sqlsrv_dbh_set_attr(_Inout_ pdo_dbh_t *dbh, _In_ zend_long attr, _Inout_ zval *val);
int pdo_sqlsrv_dbh_get_attr(_Inout_ pdo_dbh_t *dbh, _In_ zend_long attr, _Inout_ zval *return_value);
// return the last id generated by an executed SQL statement
zend_string * pdo_sqlsrv_dbh_last_id(_Inout_ pdo_dbh_t *dbh, _In_ const zend_string *name);
// return more information
void pdo_sqlsrv_dbh_return_error(_In_ pdo_dbh_t *dbh, _In_opt_ pdo_stmt_t *stmt, _Out_ zval *info);
#endif
// additional methods are supported in this function
pdo_sqlsrv_function_entry *pdo_sqlsrv_get_driver_methods( _Inout_ pdo_dbh_t *dbh, int kind );
struct pdo_dbh_methods pdo_sqlsrv_dbh_methods = {
pdo_sqlsrv_dbh_close,
pdo_sqlsrv_dbh_prepare,
pdo_sqlsrv_dbh_do,
pdo_sqlsrv_dbh_quote,
pdo_sqlsrv_dbh_begin,
pdo_sqlsrv_dbh_commit,
pdo_sqlsrv_dbh_rollback,
pdo_sqlsrv_dbh_set_attr,
pdo_sqlsrv_dbh_last_id,
pdo_sqlsrv_dbh_return_error,
pdo_sqlsrv_dbh_get_attr,
NULL, // check liveness not implemented
pdo_sqlsrv_get_driver_methods,
NULL, // request shutdown not implemented
#if PHP_VERSION_ID < 80100
NULL // in transaction not implemented
};
#else
NULL, // in transaction not implemented
NULL // get_gc not implemented
};
#endif
// log a function entry point
#define PDO_LOG_DBH_ENTRY \
{ \
pdo_sqlsrv_dbh* driver_dbh = reinterpret_cast<pdo_sqlsrv_dbh*>( dbh->driver_data ); \
if (driver_dbh != NULL) driver_dbh->set_func(__FUNCTION__); \
core_sqlsrv_register_severity_checker(pdo_severity_check); \
LOG(SEV_NOTICE, "%1!s!: entering", __FUNCTION__); \
}
// constructor for the internal object for connections
pdo_sqlsrv_dbh::pdo_sqlsrv_dbh( _In_ SQLHANDLE h, _In_ error_callback e, _In_ void* driver ) :
sqlsrv_conn( h, e, driver, SQLSRV_ENCODING_UTF8 ),
stmts( NULL ),
direct_query( false ),
query_timeout( QUERY_TIMEOUT_INVALID ),
client_buffer_max_size( PDO_SQLSRV_G( client_buffer_max_size )),
fetch_numeric( false ),
fetch_datetime( false ),
format_decimals( false ),
decimal_places( NO_CHANGE_DECIMAL_PLACES ),
use_national_characters(CHARSET_PREFERENCE_NOT_SPECIFIED),
emulate_prepare(false)
{
if( client_buffer_max_size < 0 ) {
client_buffer_max_size = sqlsrv_buffered_result_set::BUFFERED_QUERY_LIMIT_DEFAULT;
LOG( SEV_WARNING, INI_PDO_SQLSRV_CLIENT_BUFFER_MAX_SIZE " set to a invalid value. Resetting to default value." );
}
}
// pdo_sqlsrv_db_handle_factory
// Maps to PDO::__construct.
// Factory method called by the PDO driver manager to create a SQLSRV PDO connection.
// Does the following things:
// 1.Sets the error handling temporarily to PDO_ERRMODE_EXCEPTION.
// (If an error occurs in this function, the PDO specification mandates that
// an exception be thrown, regardless of the error mode setting.)
// 2. Processes the driver options.
// 3. Creates a core_conn object by calling core_sqlsrv_connect.
// 4. Restores the previous error mode on success.
// alloc_own_columns is set to 1 to tell the PDO driver manager that we manage memory
// Parameters:
// dbh - The PDO managed structure for the connection.
// driver_options - A HashTable (within the zval) of options to use when creating the connection.
// Return:
// 0 for failure, 1 for success.
int pdo_sqlsrv_db_handle_factory( _Inout_ pdo_dbh_t *dbh, _In_opt_ zval *driver_options)
{
PDO_LOG_DBH_ENTRY;
hash_auto_ptr pdo_conn_options_ht;
pdo_error_mode prev_err_mode = dbh->error_mode;
// must be done in all cases so that even a failed connection can query the
// object for errors.
dbh->methods = &pdo_sqlsrv_dbh_methods;
dbh->driver_data = NULL;
zval* temp_server_z = NULL;
sqlsrv_malloc_auto_ptr<conn_string_parser> dsn_parser;
zval server_z;
ZVAL_UNDEF( &server_z );
try {
// no matter what the error mode, we want exceptions thrown if the connection fails
// to happen (per the PDO spec)
dbh->error_mode = PDO_ERRMODE_EXCEPTION;
g_pdo_henv_cp->set_driver( dbh );
g_pdo_henv_ncp->set_driver( dbh );
CHECK_CUSTOM_ERROR( driver_options && Z_TYPE_P( driver_options ) != IS_ARRAY, *g_pdo_henv_cp, SQLSRV_ERROR_CONN_OPTS_WRONG_TYPE ) {
throw core::CoreException();
}
// throws PDOException if the ATTR_PERSISTENT is in connection options
CHECK_CUSTOM_ERROR( dbh->is_persistent, *g_pdo_henv_cp, PDO_SQLSRV_ERROR_UNSUPPORTED_DBH_ATTR ) {
dbh->refcount--;
throw pdo::PDOException();
}
// Initialize the options array to be passed to the core layer
ALLOC_HASHTABLE( pdo_conn_options_ht );
core::sqlsrv_zend_hash_init( *g_pdo_henv_cp, pdo_conn_options_ht, 10 /* # of buckets */,
ZVAL_PTR_DTOR, 0 /*persistent*/ );
// Either of g_pdo_henv_cp or g_pdo_henv_ncp can be used to propogate the error.
dsn_parser = new ( sqlsrv_malloc( sizeof( conn_string_parser ))) conn_string_parser( *g_pdo_henv_cp, dbh->data_source,
static_cast<int>( dbh->data_source_len ), pdo_conn_options_ht );
dsn_parser->parse_conn_string();
// Extract the server name
temp_server_z = zend_hash_index_find( pdo_conn_options_ht, PDO_CONN_OPTION_SERVER );
CHECK_CUSTOM_ERROR(( temp_server_z == NULL ), g_pdo_henv_cp, PDO_SQLSRV_ERROR_SERVER_NOT_SPECIFIED ) {
throw pdo::PDOException();
}
server_z = *temp_server_z;
// Add a reference to the option value since we are deleting it from the hashtable
zval_add_ref( &server_z );
zend_hash_index_del( pdo_conn_options_ht, PDO_CONN_OPTION_SERVER );
sqlsrv_conn* conn = core_sqlsrv_connect( *g_pdo_henv_cp, *g_pdo_henv_ncp, core::allocate_conn<pdo_sqlsrv_dbh>, Z_STRVAL( server_z ),
dbh->username, dbh->password, pdo_conn_options_ht, pdo_sqlsrv_handle_dbh_error,
PDO_CONN_OPTS, dbh, "pdo_sqlsrv_db_handle_factory" );
// Free the string in server_z after being used
zend_string_release( Z_STR( server_z ));
SQLSRV_ASSERT( conn != NULL, "Invalid connection returned. Exception should have been thrown." );
// set the driver_data and methods to complete creation of the PDO object
dbh->driver_data = conn;
dbh->error_mode = prev_err_mode; // reset the error mode
dbh->alloc_own_columns = 1; // we do our own memory management for columns
dbh->native_case = PDO_CASE_NATURAL;// SQL Server supports mixed case types
}
catch( core::CoreException& ) {
if ( Z_TYPE( server_z ) == IS_STRING ) {
zend_string_release( Z_STR( server_z ));
}
dbh->error_mode = prev_err_mode; // reset the error mode
g_pdo_henv_cp->last_error().reset(); // reset the last error; callee will check if last_error exist before freeing it and setting it to NULL
return 0;
}
catch( ... ) {
DIE( "pdo_sqlsrv_db_handle_factory: Unknown exception caught" );
}
return 1;
}
// pdo_sqlsrv_dbh_close
// Maps to PDO::__destruct.
// Called when a PDO object is to be destroyed.
// By the time this function is called, PDO has already made sure that
// all statements are disposed and the PDO object is the last item destroyed.
// Parameters:
// dbh - The PDO managed connection object.
// Return:
// Always returns 1 for success. (for PHP_VERSION_ID < 80100)
#if PHP_VERSION_ID < 80100
int pdo_sqlsrv_dbh_close( _Inout_ pdo_dbh_t *dbh )
#else
void pdo_sqlsrv_dbh_close(_Inout_ pdo_dbh_t *dbh)
#endif
{
LOG( SEV_NOTICE, "pdo_sqlsrv_dbh_close: entering" );
// if the connection didn't complete properly, driver_data isn't initialized.
if( dbh->driver_data == NULL ) {
#if PHP_VERSION_ID < 80100
return 1;
#else
return;
#endif
}
PDO_RESET_DBH_ERROR;
// call the core layer close
core_sqlsrv_close( reinterpret_cast<sqlsrv_conn*>( dbh->driver_data ) );
dbh->driver_data = NULL;
#if PHP_VERSION_ID < 80100
// always return success that the connection is closed
return 1;
#endif
}
// pdo_sqlsrv_dbh_prepare
// Called by PDO::prepare and PDOStatement::__construct.
// Creates a statement and prepares it for execution by PDO
// Paramters:
// dbh - The PDO managed connection object.
// sql - SQL query to be prepared.
// sql_len - Length of the sql query
// stmt - The PDO managed statement object.
// driver_options - User provided list of statement options.
// Return:
// 0 for failure, 1 for success.
#if PHP_VERSION_ID < 80100
int pdo_sqlsrv_dbh_prepare(_Inout_ pdo_dbh_t *dbh, _In_reads_(sql_len) const char *sql,
_Inout_ size_t sql_len, _Inout_ pdo_stmt_t *stmt, _In_ zval *driver_options)
#else
bool pdo_sqlsrv_dbh_prepare(_Inout_ pdo_dbh_t *dbh, _In_ zend_string *sql_zstr, _Inout_ pdo_stmt_t *stmt, _In_ zval *driver_options)
#endif
{
PDO_RESET_DBH_ERROR;
PDO_VALIDATE_CONN;
PDO_LOG_DBH_ENTRY;
hash_auto_ptr pdo_stmt_options_ht;
sqlsrv_malloc_auto_ptr<char> sql_rewrite;
size_t sql_rewrite_len = 0;
sqlsrv_malloc_auto_ptr<pdo_sqlsrv_stmt> driver_stmt;
hash_auto_ptr placeholders;
sqlsrv_malloc_auto_ptr<sql_string_parser> sql_parser;
pdo_sqlsrv_dbh* driver_dbh = reinterpret_cast<pdo_sqlsrv_dbh*>( dbh->driver_data );
SQLSRV_ASSERT(( driver_dbh != NULL ), "pdo_sqlsrv_dbh_prepare: dbh->driver_data was null");
try {
// assign the methods for the statement object. This is necessary even if the
// statement fails so the user can retrieve the error information.
stmt->methods = &pdo_sqlsrv_stmt_methods;
// if not emulate_prepare, we support parameterized queries with ?, not names
stmt->supports_placeholders = (driver_dbh->emulate_prepare) ? PDO_PLACEHOLDER_NONE : PDO_PLACEHOLDER_POSITIONAL; // the statement options may override this later
// Initialize the options array to be passed to the core layer
ALLOC_HASHTABLE( pdo_stmt_options_ht );
core::sqlsrv_zend_hash_init( *driver_dbh , pdo_stmt_options_ht, 3 /* # of buckets */,
ZVAL_PTR_DTOR, 0 /*persistent*/ );
// Either of g_pdo_henv_cp or g_pdo_henv_ncp can be used to propogate the error.
validate_stmt_options( *driver_dbh, driver_options, pdo_stmt_options_ht );
driver_stmt = static_cast<pdo_sqlsrv_stmt*>( core_sqlsrv_create_stmt( driver_dbh, core::allocate_stmt<pdo_sqlsrv_stmt>,
pdo_stmt_options_ht, PDO_STMT_OPTS,
pdo_sqlsrv_handle_stmt_error, stmt ));
// if the user didn't set anything in the prepare options, then set the buffer limit
// to the value set on the connection.
if( driver_stmt->buffered_query_limit== sqlsrv_buffered_result_set::BUFFERED_QUERY_LIMIT_INVALID ) {
driver_stmt->buffered_query_limit = driver_dbh->client_buffer_max_size;
}
#if PHP_VERSION_ID >= 80100
zend_string* sql_rewrite_zstr = NULL;
const char* sql = ZSTR_VAL(sql_zstr);
size_t sql_len = ZSTR_LEN(sql_zstr);
#endif
// rewrite named parameters in the query to positional parameters if we aren't letting PDO do the
// parameter substitution for us
if( stmt->supports_placeholders != PDO_PLACEHOLDER_NONE ) {
// rewrite the query to map named parameters to positional parameters. We do this rather than use the ODBC named
// parameters for consistency with the PDO MySQL and PDO ODBC drivers.
#if PHP_VERSION_ID < 80100
int zr = pdo_parse_params( stmt, const_cast<char*>( sql ), sql_len, &sql_rewrite, &sql_rewrite_len );
CHECK_ZEND_ERROR(zr, driver_dbh, PDO_SQLSRV_ERROR_PARAM_PARSE) {
throw core::CoreException();
}
// if parameter substitution happened, use that query instead of the original
if (sql_rewrite != 0) {
sql = sql_rewrite;
sql_len = sql_rewrite_len;
}
#else
int zr = pdo_parse_params(stmt, sql_zstr, &sql_rewrite_zstr);
CHECK_ZEND_ERROR(zr, driver_dbh, PDO_SQLSRV_ERROR_PARAM_PARSE) {
throw core::CoreException();
}
// if parameter substitution happened, use that query instead of the original
if (sql_rewrite_zstr != NULL) {
sql = ZSTR_VAL(sql_rewrite_zstr);
sql_len = ZSTR_LEN(sql_rewrite_zstr);
}
#endif
}
if( !driver_stmt->direct_query && stmt->supports_placeholders != PDO_PLACEHOLDER_NONE ) {
core_sqlsrv_prepare(driver_stmt, sql, sql_len);
}
else if( driver_stmt->direct_query ) {
if( driver_stmt->direct_query_subst_string ) {
// we use efree rather than sqlsrv_free since sqlsrv_free may wrap another allocation scheme
// and we use estrdup below to allocate the new string, which uses emalloc
efree( reinterpret_cast<void*>( const_cast<char*>( driver_stmt->direct_query_subst_string )));
}
driver_stmt->direct_query_subst_string = estrdup( sql );
driver_stmt->direct_query_subst_string_len = sql_len;
}
#if PHP_VERSION_ID >= 80100
if (sql_rewrite_zstr != NULL) {
zend_string_release(sql_rewrite_zstr);
}
#endif
// else if stmt->support_placeholders == PDO_PLACEHOLDER_NONE means that stmt->active_query_string will be
// set to the substituted query
if ( stmt->supports_placeholders == PDO_PLACEHOLDER_NONE ) {
// parse placeholders in the sql query into the placeholders ht
ALLOC_HASHTABLE( placeholders );
core::sqlsrv_zend_hash_init(*driver_dbh, placeholders, 5, ZVAL_PTR_DTOR /* dtor */, 0 /* persistent */);
#if PHP_VERSION_ID < 80100
sql_parser = new (sqlsrv_malloc(sizeof(sql_string_parser))) sql_string_parser(*driver_dbh, stmt->query_string,
static_cast<int>(stmt->query_stringlen), placeholders);
#else
sql_parser = new (sqlsrv_malloc(sizeof(sql_string_parser))) sql_string_parser(*driver_dbh, ZSTR_VAL(stmt->query_string),
ZSTR_LEN(stmt->query_string), placeholders);
#endif
sql_parser->parse_sql_string();
driver_stmt->placeholders = placeholders;
placeholders.transferred();
}
stmt->driver_data = driver_stmt;
driver_stmt.transferred();
}
// everything is cleaned up by this point
// catch everything so the exception doesn't spill into the calling PDO code
catch( core::CoreException& ) {
if( driver_stmt ) {
driver_stmt->~pdo_sqlsrv_stmt();
}
// in the event that the statement caused an error that was copied to the connection, update the
// connection with the error's SQLSTATE.
if( driver_dbh->last_error() ) {
strcpy_s( dbh->error_code, sizeof( dbh->error_code ),
reinterpret_cast<const char*>( driver_dbh->last_error()->sqlstate ));
}
#if PHP_VERSION_ID < 80100
return 0;
#else
return false;
#endif
}
// catch any errant exception and die
catch(...) {
DIE( "pdo_sqlsrv_dbh_prepare: Unknown exception caught." );
}
#if PHP_VERSION_ID < 80100
return 1;
#else
return true;
#endif
}
// pdo_sqlsrv_dbh_do
// Maps to PDO::exec.
// Execute a SQL statement, such as an insert, update or delete, and return
// the number of rows affected.
// Parameters:
// dbh - the PDO connection object, which contains the ODBC handle
// sql - the query to execute
// sql_len - length of sql query
// Return
// # of rows affected, -1 for an error.
#if PHP_VERSION_ID < 80100
zend_long pdo_sqlsrv_dbh_do( _Inout_ pdo_dbh_t *dbh, _In_reads_bytes_(sql_len) const char *sql, _In_ size_t sql_len )
#else
zend_long pdo_sqlsrv_dbh_do(_Inout_ pdo_dbh_t *dbh, _In_ const zend_string *sql)
#endif
{
PDO_RESET_DBH_ERROR;
PDO_VALIDATE_CONN;
PDO_LOG_DBH_ENTRY;
pdo_sqlsrv_dbh* driver_dbh = static_cast<pdo_sqlsrv_dbh*>( dbh->driver_data );
sqlsrv_malloc_auto_ptr<sqlsrv_stmt> driver_stmt;
SQLLEN rows = 0;
// verify that the data type sizes are the same. If we ever upgrade to 64 bit we don't want the wrong
// thing to happen here.
SQLSRV_STATIC_ASSERT( sizeof( rows ) == sizeof( SQLLEN ));
try {
SQLSRV_ASSERT( sql != NULL, "NULL or empty SQL string passed." );
SQLSRV_ASSERT( driver_dbh != NULL, "pdo_sqlsrv_dbh_do: driver_data object was NULL.");
// temp PDO statement used for error handling if something happens
pdo_stmt_t temp_stmt;
temp_stmt.dbh = dbh;
// allocate a full driver statement to take advantage of the error handling
driver_stmt = core_sqlsrv_create_stmt( driver_dbh, core::allocate_stmt<pdo_sqlsrv_stmt>, NULL /*options_ht*/,
NULL /*valid_stmt_opts*/, pdo_sqlsrv_handle_stmt_error, &temp_stmt );
driver_stmt->set_func( __FUNCTION__ );
#if PHP_VERSION_ID < 80100
SQLRETURN execReturn = core_sqlsrv_execute(driver_stmt, sql, static_cast<int>(sql_len));
#else
SQLRETURN execReturn = core_sqlsrv_execute(driver_stmt, ZSTR_VAL(sql), ZSTR_LEN(sql));
#endif
// since the user can give us a compound statement, we return the row count for the last set, and since the row count
// isn't guaranteed to be valid until all the results have been fetched, we fetch them all first.
if ( core_sqlsrv_has_any_result( driver_stmt )) {
SQLRETURN r = SQL_SUCCESS;
do {
rows = core::SQLRowCount( driver_stmt );
r = core::SQLMoreResults( driver_stmt );
} while ( r != SQL_NO_DATA );
}
// returning -1 forces PDO to return false, which signals an error occurred. SQLRowCount returns -1 for a number of cases
// naturally, so we override that here with no rows returned.
if( rows == -1 ) {
rows = 0;
}
}
catch( core::CoreException& ) {
// copy any errors on the statement to the connection so that the user sees them, since the statement is released
// before this method returns
strcpy_s( dbh->error_code, sizeof( dbh->error_code ),