/
sp.cc
2343 lines (1993 loc) · 70.8 KB
/
sp.cc
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) 2002, 2015, Oracle and/or its affiliates.
Copyright (c) 2009, 2015, MariaDB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include <my_global.h>
#include "sql_priv.h"
#include "unireg.h"
#include "sp.h"
#include "sql_base.h" // close_thread_tables
#include "sql_parse.h" // parse_sql
#include "key.h" // key_copy
#include "sql_show.h" // append_definer, append_identifier
#include "sql_db.h" // get_default_db_collation, mysql_opt_change_db,
// mysql_change_db, check_db_dir_existence,
// load_db_opt_by_name
#include "sql_table.h" // write_bin_log
#include "sql_acl.h" // SUPER_ACL
#include "sp_head.h"
#include "sp_cache.h"
#include "lock.h" // lock_object_name
#include <my_user.h>
/* Used in error handling only */
#define SP_TYPE_STRING(type) stored_procedure_type_to_str(type)
static int
db_load_routine(THD *thd, stored_procedure_type type, sp_name *name,
sp_head **sphp,
sql_mode_t sql_mode, const char *params, const char *returns,
const char *body, st_sp_chistics &chistics,
LEX_STRING *definer_user_name, LEX_STRING *definer_host_name,
longlong created, longlong modified,
Stored_program_creation_ctx *creation_ctx);
static const
TABLE_FIELD_TYPE proc_table_fields[MYSQL_PROC_FIELD_COUNT] =
{
{
{ C_STRING_WITH_LEN("db") },
{ C_STRING_WITH_LEN("char(64)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("name") },
{ C_STRING_WITH_LEN("char(64)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("type") },
{ C_STRING_WITH_LEN("enum('FUNCTION','PROCEDURE')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("specific_name") },
{ C_STRING_WITH_LEN("char(64)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("language") },
{ C_STRING_WITH_LEN("enum('SQL')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("sql_data_access") },
{ C_STRING_WITH_LEN("enum('CONTAINS_SQL','NO_SQL','READS_SQL_DATA','MODIFIES_SQL_DATA')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("is_deterministic") },
{ C_STRING_WITH_LEN("enum('YES','NO')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("security_type") },
{ C_STRING_WITH_LEN("enum('INVOKER','DEFINER')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("param_list") },
{ C_STRING_WITH_LEN("blob") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("returns") },
{ C_STRING_WITH_LEN("longblob") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("body") },
{ C_STRING_WITH_LEN("longblob") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("definer") },
{ C_STRING_WITH_LEN("char(") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("created") },
{ C_STRING_WITH_LEN("timestamp") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("modified") },
{ C_STRING_WITH_LEN("timestamp") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("sql_mode") },
{ C_STRING_WITH_LEN("set('REAL_AS_FLOAT','PIPES_AS_CONCAT','ANSI_QUOTES',"
"'IGNORE_SPACE','IGNORE_BAD_TABLE_OPTIONS','ONLY_FULL_GROUP_BY',"
"'NO_UNSIGNED_SUBTRACTION',"
"'NO_DIR_IN_CREATE','POSTGRESQL','ORACLE','MSSQL','DB2','MAXDB',"
"'NO_KEY_OPTIONS','NO_TABLE_OPTIONS','NO_FIELD_OPTIONS','MYSQL323','MYSQL40',"
"'ANSI','NO_AUTO_VALUE_ON_ZERO','NO_BACKSLASH_ESCAPES','STRICT_TRANS_TABLES',"
"'STRICT_ALL_TABLES','NO_ZERO_IN_DATE','NO_ZERO_DATE','INVALID_DATES',"
"'ERROR_FOR_DIVISION_BY_ZERO','TRADITIONAL','NO_AUTO_CREATE_USER',"
"'HIGH_NOT_PRECEDENCE','NO_ENGINE_SUBSTITUTION','PAD_CHAR_TO_FULL_LENGTH')") },
{ NULL, 0 }
},
{
{ C_STRING_WITH_LEN("comment") },
{ C_STRING_WITH_LEN("text") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("character_set_client") },
{ C_STRING_WITH_LEN("char(32)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("collation_connection") },
{ C_STRING_WITH_LEN("char(32)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("db_collation") },
{ C_STRING_WITH_LEN("char(32)") },
{ C_STRING_WITH_LEN("utf8") }
},
{
{ C_STRING_WITH_LEN("body_utf8") },
{ C_STRING_WITH_LEN("longblob") },
{ NULL, 0 }
}
};
static const TABLE_FIELD_DEF
proc_table_def= {MYSQL_PROC_FIELD_COUNT, proc_table_fields, 0, (uint*) 0 };
/*************************************************************************/
/**
Stored_routine_creation_ctx -- creation context of stored routines
(stored procedures and functions).
*/
class Stored_routine_creation_ctx : public Stored_program_creation_ctx,
public Sql_alloc
{
public:
static Stored_routine_creation_ctx *
load_from_db(THD *thd, const sp_name *name, TABLE *proc_tbl);
public:
virtual Stored_program_creation_ctx *clone(MEM_ROOT *mem_root)
{
return new (mem_root) Stored_routine_creation_ctx(m_client_cs,
m_connection_cl,
m_db_cl);
}
protected:
virtual Object_creation_ctx *create_backup_ctx(THD *thd) const
{
DBUG_ENTER("Stored_routine_creation_ctx::create_backup_ctx");
DBUG_RETURN(new Stored_routine_creation_ctx(thd));
}
private:
Stored_routine_creation_ctx(THD *thd)
: Stored_program_creation_ctx(thd)
{ }
Stored_routine_creation_ctx(CHARSET_INFO *client_cs,
CHARSET_INFO *connection_cl,
CHARSET_INFO *db_cl)
: Stored_program_creation_ctx(client_cs, connection_cl, db_cl)
{ }
};
/**************************************************************************
Stored_routine_creation_ctx implementation.
**************************************************************************/
bool load_charset(MEM_ROOT *mem_root,
Field *field,
CHARSET_INFO *dflt_cs,
CHARSET_INFO **cs)
{
String cs_name;
if (get_field(mem_root, field, &cs_name))
{
*cs= dflt_cs;
return TRUE;
}
*cs= get_charset_by_csname(cs_name.c_ptr(), MY_CS_PRIMARY, MYF(0));
if (*cs == NULL)
{
*cs= dflt_cs;
return TRUE;
}
return FALSE;
}
/*************************************************************************/
bool load_collation(MEM_ROOT *mem_root,
Field *field,
CHARSET_INFO *dflt_cl,
CHARSET_INFO **cl)
{
String cl_name;
if (get_field(mem_root, field, &cl_name))
{
*cl= dflt_cl;
return TRUE;
}
*cl= get_charset_by_name(cl_name.c_ptr(), MYF(0));
if (*cl == NULL)
{
*cl= dflt_cl;
return TRUE;
}
return FALSE;
}
/*************************************************************************/
Stored_routine_creation_ctx *
Stored_routine_creation_ctx::load_from_db(THD *thd,
const sp_name *name,
TABLE *proc_tbl)
{
/* Load character set/collation attributes. */
CHARSET_INFO *client_cs;
CHARSET_INFO *connection_cl;
CHARSET_INFO *db_cl;
const char *db_name= thd->strmake(name->m_db.str, name->m_db.length);
const char *sr_name= thd->strmake(name->m_name.str, name->m_name.length);
bool invalid_creation_ctx= FALSE;
if (load_charset(thd->mem_root,
proc_tbl->field[MYSQL_PROC_FIELD_CHARACTER_SET_CLIENT],
thd->variables.character_set_client,
&client_cs))
{
sql_print_warning("Stored routine '%s'.'%s': invalid value "
"in column mysql.proc.character_set_client.",
(const char *) db_name,
(const char *) sr_name);
invalid_creation_ctx= TRUE;
}
if (load_collation(thd->mem_root,
proc_tbl->field[MYSQL_PROC_FIELD_COLLATION_CONNECTION],
thd->variables.collation_connection,
&connection_cl))
{
sql_print_warning("Stored routine '%s'.'%s': invalid value "
"in column mysql.proc.collation_connection.",
(const char *) db_name,
(const char *) sr_name);
invalid_creation_ctx= TRUE;
}
if (load_collation(thd->mem_root,
proc_tbl->field[MYSQL_PROC_FIELD_DB_COLLATION],
NULL,
&db_cl))
{
sql_print_warning("Stored routine '%s'.'%s': invalid value "
"in column mysql.proc.db_collation.",
(const char *) db_name,
(const char *) sr_name);
invalid_creation_ctx= TRUE;
}
if (invalid_creation_ctx)
{
push_warning_printf(thd,
Sql_condition::WARN_LEVEL_WARN,
ER_SR_INVALID_CREATION_CTX,
ER_THD(thd, ER_SR_INVALID_CREATION_CTX),
(const char *) db_name,
(const char *) sr_name);
}
/*
If we failed to retrieve the database collation, load the default one
from the disk.
*/
if (!db_cl)
db_cl= get_default_db_collation(thd, name->m_db.str);
/* Create the context. */
return new Stored_routine_creation_ctx(client_cs, connection_cl, db_cl);
}
/*************************************************************************/
class Proc_table_intact : public Table_check_intact
{
private:
bool m_print_once;
public:
Proc_table_intact() : m_print_once(TRUE) {}
protected:
void report_error(uint code, const char *fmt, ...);
};
/**
Report failure to validate the mysql.proc table definition.
Print a message to the error log only once.
*/
void Proc_table_intact::report_error(uint code, const char *fmt, ...)
{
va_list args;
char buf[512];
va_start(args, fmt);
my_vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (code)
my_message(code, buf, MYF(0));
else
my_error(ER_CANNOT_LOAD_FROM_TABLE_V2, MYF(0), "mysql", "proc");
if (m_print_once)
{
m_print_once= FALSE;
sql_print_error("%s", buf);
}
};
/** Single instance used to control printing to the error log. */
static Proc_table_intact proc_table_intact;
/**
Open the mysql.proc table for read.
@param thd Thread context
@param backup Pointer to Open_tables_state instance where information about
currently open tables will be saved, and from which will be
restored when we will end work with mysql.proc.
@retval
0 Error
@retval
\# Pointer to TABLE object of mysql.proc
*/
TABLE *open_proc_table_for_read(THD *thd, Open_tables_backup *backup)
{
TABLE_LIST table;
DBUG_ENTER("open_proc_table_for_read");
table.init_one_table("mysql", 5, "proc", 4, "proc", TL_READ);
if (open_system_tables_for_read(thd, &table, backup))
DBUG_RETURN(NULL);
if (!proc_table_intact.check(table.table, &proc_table_def))
DBUG_RETURN(table.table);
close_system_tables(thd, backup);
DBUG_RETURN(NULL);
}
/**
Open the mysql.proc table for update.
@param thd Thread context
@note
Table opened with this call should closed using close_thread_tables().
@retval
0 Error
@retval
\# Pointer to TABLE object of mysql.proc
*/
static TABLE *open_proc_table_for_update(THD *thd)
{
TABLE_LIST table_list;
TABLE *table;
MDL_savepoint mdl_savepoint= thd->mdl_context.mdl_savepoint();
DBUG_ENTER("open_proc_table_for_update");
table_list.init_one_table("mysql", 5, "proc", 4, "proc", TL_WRITE);
if (!(table= open_system_table_for_update(thd, &table_list)))
DBUG_RETURN(NULL);
if (!proc_table_intact.check(table, &proc_table_def))
DBUG_RETURN(table);
close_thread_tables(thd);
thd->mdl_context.rollback_to_savepoint(mdl_savepoint);
DBUG_RETURN(NULL);
}
/**
Find row in open mysql.proc table representing stored routine.
@param thd Thread context
@param type Type of routine to find (function or procedure)
@param name Name of routine
@param table TABLE object for open mysql.proc table.
@retval
SP_OK Routine found
@retval
SP_KEY_NOT_FOUND No routine with given name
*/
static int
db_find_routine_aux(THD *thd, stored_procedure_type type, sp_name *name,
TABLE *table)
{
uchar key[MAX_KEY_LENGTH]; // db, name, optional key length type
DBUG_ENTER("db_find_routine_aux");
DBUG_PRINT("enter", ("type: %d name: %.*s",
type, (int) name->m_name.length, name->m_name.str));
/*
Create key to find row. We have to use field->store() to be able to
handle VARCHAR and CHAR fields.
Assumption here is that the three first fields in the table are
'db', 'name' and 'type' and the first key is the primary key over the
same fields.
*/
if (name->m_name.length > table->field[1]->field_length)
DBUG_RETURN(SP_KEY_NOT_FOUND);
table->field[0]->store(name->m_db.str, name->m_db.length, &my_charset_bin);
table->field[1]->store(name->m_name.str, name->m_name.length,
&my_charset_bin);
table->field[2]->store((longlong) type, TRUE);
key_copy(key, table->record[0], table->key_info,
table->key_info->key_length);
if (table->file->ha_index_read_idx_map(table->record[0], 0, key,
HA_WHOLE_KEY,
HA_READ_KEY_EXACT))
DBUG_RETURN(SP_KEY_NOT_FOUND);
DBUG_RETURN(SP_OK);
}
/**
Find routine definition in mysql.proc table and create corresponding
sp_head object for it.
@param thd Thread context
@param type Type of routine (TYPE_ENUM_PROCEDURE/...)
@param name Name of routine
@param sphp Out parameter in which pointer to created sp_head
object is returned (0 in case of error).
@note
This function may damage current LEX during execution, so it is good
idea to create temporary LEX and make it active before calling it.
@retval
0 Success
@retval
non-0 Error (may be one of special codes like SP_KEY_NOT_FOUND)
*/
static int
db_find_routine(THD *thd, stored_procedure_type type, sp_name *name,
sp_head **sphp)
{
TABLE *table;
const char *params, *returns, *body;
int ret;
const char *definer;
longlong created;
longlong modified;
st_sp_chistics chistics;
char *ptr;
uint length;
char buff[65];
String str(buff, sizeof(buff), &my_charset_bin);
bool saved_time_zone_used= thd->time_zone_used;
sql_mode_t sql_mode, saved_mode= thd->variables.sql_mode;
Open_tables_backup open_tables_state_backup;
Stored_program_creation_ctx *creation_ctx;
char definer_user_name_holder[USERNAME_LENGTH + 1];
LEX_STRING definer_user_name= { definer_user_name_holder, USERNAME_LENGTH };
char definer_host_name_holder[HOSTNAME_LENGTH + 1];
LEX_STRING definer_host_name= { definer_host_name_holder, HOSTNAME_LENGTH };
DBUG_ENTER("db_find_routine");
DBUG_PRINT("enter", ("type: %d name: %.*s",
type, (int) name->m_name.length, name->m_name.str));
*sphp= 0; // In case of errors
if (!(table= open_proc_table_for_read(thd, &open_tables_state_backup)))
DBUG_RETURN(SP_OPEN_TABLE_FAILED);
/* Reset sql_mode during data dictionary operations. */
thd->variables.sql_mode= 0;
if ((ret= db_find_routine_aux(thd, type, name, table)) != SP_OK)
goto done;
if (table->s->fields < MYSQL_PROC_FIELD_COUNT)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
bzero((char *)&chistics, sizeof(chistics));
if ((ptr= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_ACCESS])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
switch (ptr[0]) {
case 'N':
chistics.daccess= SP_NO_SQL;
break;
case 'C':
chistics.daccess= SP_CONTAINS_SQL;
break;
case 'R':
chistics.daccess= SP_READS_SQL_DATA;
break;
case 'M':
chistics.daccess= SP_MODIFIES_SQL_DATA;
break;
default:
chistics.daccess= SP_DEFAULT_ACCESS_MAPPING;
}
if ((ptr= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_DETERMINISTIC])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
chistics.detistic= (ptr[0] == 'N' ? FALSE : TRUE);
if ((ptr= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_SECURITY_TYPE])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
chistics.suid= (ptr[0] == 'I' ? SP_IS_NOT_SUID : SP_IS_SUID);
if ((params= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_PARAM_LIST])) == NULL)
{
params= "";
}
if (type == TYPE_ENUM_PROCEDURE)
returns= "";
else if ((returns= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_RETURNS])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
if ((body= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_BODY])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
// Get additional information
if ((definer= get_field(thd->mem_root,
table->field[MYSQL_PROC_FIELD_DEFINER])) == NULL)
{
ret= SP_GET_FIELD_FAILED;
goto done;
}
modified= table->field[MYSQL_PROC_FIELD_MODIFIED]->val_int();
created= table->field[MYSQL_PROC_FIELD_CREATED]->val_int();
sql_mode= (ulong) table->field[MYSQL_PROC_FIELD_SQL_MODE]->val_int();
table->field[MYSQL_PROC_FIELD_COMMENT]->val_str(&str, &str);
ptr= 0;
if ((length= str.length()))
ptr= thd->strmake(str.ptr(), length);
chistics.comment.str= ptr;
chistics.comment.length= length;
creation_ctx= Stored_routine_creation_ctx::load_from_db(thd, name, table);
close_system_tables(thd, &open_tables_state_backup);
table= 0;
if (parse_user(definer, strlen(definer),
definer_user_name.str, &definer_user_name.length,
definer_host_name.str, &definer_host_name.length) &&
definer_user_name.length && !definer_host_name.length)
{
// 'user@' -> 'user@%'
definer_host_name= host_not_specified;
}
ret= db_load_routine(thd, type, name, sphp,
sql_mode, params, returns, body, chistics,
&definer_user_name, &definer_host_name,
created, modified, creation_ctx);
done:
/*
Restore the time zone flag as the timezone usage in proc table
does not affect replication.
*/
thd->time_zone_used= saved_time_zone_used;
if (table)
close_system_tables(thd, &open_tables_state_backup);
thd->variables.sql_mode= saved_mode;
DBUG_RETURN(ret);
}
/**
Silence DEPRECATED SYNTAX warnings when loading a stored procedure
into the cache.
*/
struct Silence_deprecated_warning : public Internal_error_handler
{
public:
virtual bool handle_condition(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level *level,
const char* msg,
Sql_condition ** cond_hdl);
};
bool
Silence_deprecated_warning::handle_condition(
THD *,
uint sql_errno,
const char*,
Sql_condition::enum_warning_level *level,
const char*,
Sql_condition ** cond_hdl)
{
*cond_hdl= NULL;
if (sql_errno == ER_WARN_DEPRECATED_SYNTAX &&
*level == Sql_condition::WARN_LEVEL_WARN)
return TRUE;
return FALSE;
}
/**
@brief The function parses input strings and returns SP stucture.
@param[in] thd Thread handler
@param[in] defstr CREATE... string
@param[in] sql_mode SQL mode
@param[in] creation_ctx Creation context of stored routines
@return Pointer on sp_head struct
@retval # Pointer on sp_head struct
@retval 0 error
*/
static sp_head *sp_compile(THD *thd, String *defstr, sql_mode_t sql_mode,
Stored_program_creation_ctx *creation_ctx)
{
sp_head *sp;
sql_mode_t old_sql_mode= thd->variables.sql_mode;
ha_rows old_select_limit= thd->variables.select_limit;
sp_rcontext *old_spcont= thd->spcont;
Silence_deprecated_warning warning_handler;
Parser_state parser_state;
thd->variables.sql_mode= sql_mode;
thd->variables.select_limit= HA_POS_ERROR;
if (parser_state.init(thd, defstr->c_ptr_safe(), defstr->length()))
{
thd->variables.sql_mode= old_sql_mode;
thd->variables.select_limit= old_select_limit;
return NULL;
}
lex_start(thd);
thd->push_internal_handler(&warning_handler);
thd->spcont= 0;
if (parse_sql(thd, & parser_state, creation_ctx) || thd->lex == NULL)
{
sp= thd->lex->sphead;
delete sp;
sp= 0;
}
else
{
sp= thd->lex->sphead;
}
thd->pop_internal_handler();
thd->spcont= old_spcont;
thd->variables.sql_mode= old_sql_mode;
thd->variables.select_limit= old_select_limit;
return sp;
}
class Bad_db_error_handler : public Internal_error_handler
{
public:
Bad_db_error_handler()
:m_error_caught(false)
{}
virtual bool handle_condition(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level *level,
const char* message,
Sql_condition ** cond_hdl);
bool error_caught() const { return m_error_caught; }
private:
bool m_error_caught;
};
bool
Bad_db_error_handler::handle_condition(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level
*level,
const char* message,
Sql_condition ** cond_hdl)
{
if (sql_errno == ER_BAD_DB_ERROR)
{
m_error_caught= true;
return true;
}
return false;
}
static int
db_load_routine(THD *thd, stored_procedure_type type,
sp_name *name, sp_head **sphp,
sql_mode_t sql_mode, const char *params, const char *returns,
const char *body, st_sp_chistics &chistics,
LEX_STRING *definer_user_name, LEX_STRING *definer_host_name,
longlong created, longlong modified,
Stored_program_creation_ctx *creation_ctx)
{
LEX *old_lex= thd->lex, newlex;
String defstr;
char saved_cur_db_name_buf[SAFE_NAME_LEN+1];
LEX_STRING saved_cur_db_name=
{ saved_cur_db_name_buf, sizeof(saved_cur_db_name_buf) };
bool cur_db_changed;
Bad_db_error_handler db_not_exists_handler;
int ret= 0;
thd->lex= &newlex;
newlex.current_select= NULL;
// Resetting REPLACE and EXIST flags in create_info, for show_create_sp()
newlex.create_info.DDL_options_st::init();
defstr.set_charset(creation_ctx->get_client_cs());
/*
We have to add DEFINER clause and provide proper routine characterstics in
routine definition statement that we build here to be able to use this
definition for SHOW CREATE PROCEDURE later.
*/
if (!show_create_sp(thd, &defstr,
type,
NULL, 0,
name->m_name.str, name->m_name.length,
params, strlen(params),
returns, strlen(returns),
body, strlen(body),
&chistics, definer_user_name, definer_host_name,
sql_mode))
{
ret= SP_INTERNAL_ERROR;
goto end;
}
thd->push_internal_handler(&db_not_exists_handler);
/*
Change the current database (if needed).
TODO: why do we force switch here?
*/
if (mysql_opt_change_db(thd, &name->m_db, &saved_cur_db_name, TRUE,
&cur_db_changed))
{
ret= SP_INTERNAL_ERROR;
thd->pop_internal_handler();
goto end;
}
thd->pop_internal_handler();
if (db_not_exists_handler.error_caught())
{
ret= SP_INTERNAL_ERROR;
my_error(ER_BAD_DB_ERROR, MYF(0), name->m_db.str);
goto end;
}
{
*sphp= sp_compile(thd, &defstr, sql_mode, creation_ctx);
/*
Force switching back to the saved current database (if changed),
because it may be NULL. In this case, mysql_change_db() would
generate an error.
*/
if (cur_db_changed && mysql_change_db(thd, &saved_cur_db_name, TRUE))
{
ret= SP_INTERNAL_ERROR;
goto end;
}
if (!*sphp)
{
ret= SP_PARSE_ERROR;
goto end;
}
(*sphp)->set_definer(definer_user_name, definer_host_name);
(*sphp)->set_info(created, modified, &chistics, sql_mode);
(*sphp)->set_creation_ctx(creation_ctx);
(*sphp)->optimize();
/*
Not strictly necessary to invoke this method here, since we know
that we've parsed CREATE PROCEDURE/FUNCTION and not an
UPDATE/DELETE/INSERT/REPLACE/LOAD/CREATE TABLE, but we try to
maintain the invariant that this method is called for each
distinct statement, in case its logic is extended with other
types of analyses in future.
*/
newlex.set_trg_event_type_for_tables();
}
end:
thd->lex->sphead= NULL;
lex_end(thd->lex);
thd->lex= old_lex;
return ret;
}
void
sp_returns_type(THD *thd, String &result, sp_head *sp)
{
TABLE table;
TABLE_SHARE share;
Field *field;
bzero((char*) &table, sizeof(table));
bzero((char*) &share, sizeof(share));
table.in_use= thd;
table.s = &share;
field= sp->create_result_field(0, 0, &table);
field->sql_type(result);
if (field->has_charset())
{
result.append(STRING_WITH_LEN(" CHARSET "));
result.append(field->charset()->csname);
if (!(field->charset()->state & MY_CS_PRIMARY))
{
result.append(STRING_WITH_LEN(" COLLATE "));
result.append(field->charset()->name);
}
}
delete field;
}
/**
Delete the record for the stored routine object from mysql.proc,
which is already opened, locked, and positioned to the record with the
record to be deleted.
The operation deletes the record for the current record in "table"
and invalidates the stored-routine cache.
@param thd Thread context.
@param type Stored routine type (TYPE_ENUM_PROCEDURE or TYPE_ENUM_FUNCTION)
@param name Stored routine name.
@param table A pointer to the opened mysql.proc table
@returns Error code.
@return SP_OK on success, or SP_DELETE_ROW_FAILED on error.
used to indicate about errors.
*/
static int
sp_drop_routine_internal(THD *thd, stored_procedure_type type,
sp_name *name, TABLE *table)
{
DBUG_ENTER("sp_drop_routine_internal");
if (table->file->ha_delete_row(table->record[0]))
DBUG_RETURN(SP_DELETE_ROW_FAILED);
/* Make change permanent and avoid 'table is marked as crashed' errors */
table->file->extra(HA_EXTRA_FLUSH);
sp_cache_invalidate();
/*
A lame workaround for lack of cache flush:
make sure the routine is at least gone from the
local cache.
*/
sp_head *sp;
sp_cache **spc= (type == TYPE_ENUM_FUNCTION ?
&thd->sp_func_cache : &thd->sp_proc_cache);
sp= sp_cache_lookup(spc, name);
if (sp)
sp_cache_flush_obsolete(spc, &sp);
DBUG_RETURN(SP_OK);
}
/**
Write stored-routine object into mysql.proc.
This operation stores attributes of the stored procedure/function into
the mysql.proc.