PostgreSQL Source Code  git master
plperl.c
Go to the documentation of this file.
1 /**********************************************************************
2  * plperl.c - perl as a procedural language for PostgreSQL
3  *
4  * src/pl/plperl/plperl.c
5  *
6  **********************************************************************/
7 
8 #include "postgres.h"
9 
10 /* system stuff */
11 #include <ctype.h>
12 #include <fcntl.h>
13 #include <limits.h>
14 #include <unistd.h>
15 
16 /* postgreSQL stuff */
17 #include "access/htup_details.h"
18 #include "access/xact.h"
19 #include "catalog/pg_language.h"
20 #include "catalog/pg_proc.h"
21 #include "catalog/pg_type.h"
22 #include "commands/event_trigger.h"
23 #include "commands/trigger.h"
24 #include "executor/spi.h"
25 #include "funcapi.h"
26 #include "mb/pg_wchar.h"
27 #include "miscadmin.h"
28 #include "nodes/makefuncs.h"
29 #include "parser/parse_type.h"
30 #include "storage/ipc.h"
31 #include "tcop/tcopprot.h"
32 #include "utils/builtins.h"
33 #include "utils/fmgroids.h"
34 #include "utils/guc.h"
35 #include "utils/hsearch.h"
36 #include "utils/lsyscache.h"
37 #include "utils/memutils.h"
38 #include "utils/rel.h"
39 #include "utils/syscache.h"
40 #include "utils/typcache.h"
41 
42 /* define our text domain for translations */
43 #undef TEXTDOMAIN
44 #define TEXTDOMAIN PG_TEXTDOMAIN("plperl")
45 
46 /* perl stuff */
47 /* string literal macros defining chunks of perl code */
48 #include "perlchunks.h"
49 #include "plperl.h"
50 #include "plperl_helpers.h"
51 /* defines PLPERL_SET_OPMASK */
52 #include "plperl_opmask.h"
53 
54 EXTERN_C void boot_DynaLoader(pTHX_ CV *cv);
57 
59 
60 /**********************************************************************
61  * Information associated with a Perl interpreter. We have one interpreter
62  * that is used for all plperlu (untrusted) functions. For plperl (trusted)
63  * functions, there is a separate interpreter for each effective SQL userid.
64  * (This is needed to ensure that an unprivileged user can't inject Perl code
65  * that'll be executed with the privileges of some other SQL user.)
66  *
67  * The plperl_interp_desc structs are kept in a Postgres hash table indexed
68  * by userid OID, with OID 0 used for the single untrusted interpreter.
69  * Once created, an interpreter is kept for the life of the process.
70  *
71  * We start out by creating a "held" interpreter, which we initialize
72  * only as far as we can do without deciding if it will be trusted or
73  * untrusted. Later, when we first need to run a plperl or plperlu
74  * function, we complete the initialization appropriately and move the
75  * PerlInterpreter pointer into the plperl_interp_hash hashtable. If after
76  * that we need more interpreters, we create them as needed if we can, or
77  * fail if the Perl build doesn't support multiple interpreters.
78  *
79  * The reason for all the dancing about with a held interpreter is to make
80  * it possible for people to preload a lot of Perl code at postmaster startup
81  * (using plperl.on_init) and then use that code in backends. Of course this
82  * will only work for the first interpreter created in any backend, but it's
83  * still useful with that restriction.
84  **********************************************************************/
85 typedef struct plperl_interp_desc
86 {
87  Oid user_id; /* Hash key (must be first!) */
88  PerlInterpreter *interp; /* The interpreter */
89  HTAB *query_hash; /* plperl_query_entry structs */
91 
92 
93 /**********************************************************************
94  * The information we cache about loaded procedures
95  *
96  * The fn_refcount field counts the struct's reference from the hash table
97  * shown below, plus one reference for each function call level that is using
98  * the struct. We can release the struct, and the associated Perl sub, when
99  * the fn_refcount goes to zero. Releasing the struct itself is done by
100  * deleting the fn_cxt, which also gets rid of all subsidiary data.
101  **********************************************************************/
102 typedef struct plperl_proc_desc
103 {
104  char *proname; /* user name of procedure */
105  MemoryContext fn_cxt; /* memory context for this procedure */
106  unsigned long fn_refcount; /* number of active references */
107  TransactionId fn_xmin; /* xmin/TID of procedure's pg_proc tuple */
109  SV *reference; /* CODE reference for Perl sub */
110  plperl_interp_desc *interp; /* interpreter it's created in */
111  bool fn_readonly; /* is function readonly (not volatile)? */
114  bool lanpltrusted; /* is it plperl, rather than plperlu? */
115  bool fn_retistuple; /* true, if function returns tuple */
116  bool fn_retisset; /* true, if function returns set */
117  bool fn_retisarray; /* true if function returns array */
118  /* Conversion info for function's result type: */
119  Oid result_oid; /* Oid of result type */
120  FmgrInfo result_in_func; /* I/O function and arg for result type */
122  /* Per-argument info for function's argument types: */
123  int nargs;
124  FmgrInfo *arg_out_func; /* output fns for arg types */
125  bool *arg_is_rowtype; /* is each arg composite? */
126  Oid *arg_arraytype; /* InvalidOid if not an array */
128 
129 #define increment_prodesc_refcount(prodesc) \
130  ((prodesc)->fn_refcount++)
131 #define decrement_prodesc_refcount(prodesc) \
132  do { \
133  Assert((prodesc)->fn_refcount > 0); \
134  if (--((prodesc)->fn_refcount) == 0) \
135  free_plperl_function(prodesc); \
136  } while(0)
137 
138 /**********************************************************************
139  * For speedy lookup, we maintain a hash table mapping from
140  * function OID + trigger flag + user OID to plperl_proc_desc pointers.
141  * The reason the plperl_proc_desc struct isn't directly part of the hash
142  * entry is to simplify recovery from errors during compile_plperl_function.
143  *
144  * Note: if the same function is called by multiple userIDs within a session,
145  * there will be a separate plperl_proc_desc entry for each userID in the case
146  * of plperl functions, but only one entry for plperlu functions, because we
147  * set user_id = 0 for that case. If the user redeclares the same function
148  * from plperl to plperlu or vice versa, there might be multiple
149  * plperl_proc_ptr entries in the hashtable, but only one is valid.
150  **********************************************************************/
151 typedef struct plperl_proc_key
152 {
153  Oid proc_id; /* Function OID */
154 
155  /*
156  * is_trigger is really a bool, but declare as Oid to ensure this struct
157  * contains no padding
158  */
159  Oid is_trigger; /* is it a trigger function? */
160  Oid user_id; /* User calling the function, or 0 */
162 
163 typedef struct plperl_proc_ptr
164 {
165  plperl_proc_key proc_key; /* Hash key (must be first!) */
168 
169 /*
170  * The information we cache for the duration of a single call to a
171  * function.
172  */
173 typedef struct plperl_call_data
174 {
177  /* remaining fields are used only in a function returning set: */
180  Oid cdomain_oid; /* 0 unless returning domain-over-composite */
184 
185 /**********************************************************************
186  * The information we cache about prepared and saved plans
187  **********************************************************************/
188 typedef struct plperl_query_desc
189 {
190  char qname[24];
191  MemoryContext plan_cxt; /* context holding this struct */
193  int nargs;
198 
199 /* hash table entry for query desc */
200 
201 typedef struct plperl_query_entry
202 {
203  char query_name[NAMEDATALEN];
206 
207 /**********************************************************************
208  * Information for PostgreSQL - Perl array conversion.
209  **********************************************************************/
210 typedef struct plperl_array_info
211 {
212  int ndims;
213  bool elem_is_rowtype; /* 't' if element type is a rowtype */
215  bool *nulls;
216  int *nelems;
220 
221 /**********************************************************************
222  * Global data
223  **********************************************************************/
224 
225 static HTAB *plperl_interp_hash = NULL;
226 static HTAB *plperl_proc_hash = NULL;
228 
229 /* If we have an unassigned "held" interpreter, it's stored here */
230 static PerlInterpreter *plperl_held_interp = NULL;
231 
232 /* GUC variables */
233 static bool plperl_use_strict = false;
234 static char *plperl_on_init = NULL;
235 static char *plperl_on_plperl_init = NULL;
236 static char *plperl_on_plperlu_init = NULL;
237 
238 static bool plperl_ending = false;
239 static OP *(*pp_require_orig) (pTHX) = NULL;
240 static char plperl_opmask[MAXO];
241 
242 /* this is saved and restored by plperl_call_handler */
244 
245 /**********************************************************************
246  * Forward declarations
247  **********************************************************************/
248 void _PG_init(void);
249 
250 static PerlInterpreter *plperl_init_interp(void);
251 static void plperl_destroy_interp(PerlInterpreter **);
252 static void plperl_fini(int code, Datum arg);
253 static void set_interp_require(bool trusted);
254 
258 
259 static void free_plperl_function(plperl_proc_desc *prodesc);
260 
262  bool is_trigger,
263  bool is_event_trigger);
264 
265 static SV *plperl_hash_from_tuple(HeapTuple tuple, TupleDesc tupdesc, bool include_generated);
266 static SV *plperl_hash_from_datum(Datum attr);
267 static SV *plperl_ref_from_pg_array(Datum arg, Oid typid);
268 static SV *split_array(plperl_array_info *info, int first, int last, int nest);
269 static SV *make_array_ref(plperl_array_info *info, int first, int last);
270 static SV *get_perl_array_ref(SV *sv);
271 static Datum plperl_sv_to_datum(SV *sv, Oid typid, int32 typmod,
272  FunctionCallInfo fcinfo,
273  FmgrInfo *finfo, Oid typioparam,
274  bool *isnull);
275 static void _sv_to_datum_finfo(Oid typid, FmgrInfo *finfo, Oid *typioparam);
276 static Datum plperl_array_to_datum(SV *src, Oid typid, int32 typmod);
277 static void array_to_datum_internal(AV *av, ArrayBuildState *astate,
278  int *ndims, int *dims, int cur_depth,
279  Oid arraytypid, Oid elemtypid, int32 typmod,
280  FmgrInfo *finfo, Oid typioparam);
281 static Datum plperl_hash_to_datum(SV *src, TupleDesc td);
282 
283 static void plperl_init_shared_libs(pTHX);
284 static void plperl_trusted_init(void);
285 static void plperl_untrusted_init(void);
286 static HV *plperl_spi_execute_fetch_result(SPITupleTable *, uint64, int);
287 static void plperl_return_next_internal(SV *sv);
288 static char *hek2cstr(HE *he);
289 static SV **hv_store_string(HV *hv, const char *key, SV *val);
290 static SV **hv_fetch_string(HV *hv, const char *key);
291 static void plperl_create_sub(plperl_proc_desc *desc, const char *s, Oid fn_oid);
292 static SV *plperl_call_perl_func(plperl_proc_desc *desc,
293  FunctionCallInfo fcinfo);
294 static void plperl_compile_callback(void *arg);
295 static void plperl_exec_callback(void *arg);
296 static void plperl_inline_callback(void *arg);
297 static char *strip_trailing_ws(const char *msg);
298 static OP *pp_require_safe(pTHX);
299 static void activate_interpreter(plperl_interp_desc *interp_desc);
300 
301 #ifdef WIN32
302 static char *setlocale_perl(int category, char *locale);
303 #endif
304 
305 /*
306  * Decrement the refcount of the given SV within the active Perl interpreter
307  *
308  * This is handy because it reloads the active-interpreter pointer, saving
309  * some notation in callers that switch the active interpreter.
310  */
311 static inline void
313 {
314  dTHX;
315 
316  SvREFCNT_dec(sv);
317 }
318 
319 /*
320  * convert a HE (hash entry) key to a cstr in the current database encoding
321  */
322 static char *
323 hek2cstr(HE *he)
324 {
325  dTHX;
326  char *ret;
327  SV *sv;
328 
329  /*
330  * HeSVKEY_force will return a temporary mortal SV*, so we need to make
331  * sure to free it with ENTER/SAVE/FREE/LEAVE
332  */
333  ENTER;
334  SAVETMPS;
335 
336  /*-------------------------
337  * Unfortunately, while HeUTF8 is true for most things > 256, for values
338  * 128..255 it's not, but perl will treat them as unicode code points if
339  * the utf8 flag is not set ( see The "Unicode Bug" in perldoc perlunicode
340  * for more)
341  *
342  * So if we did the expected:
343  * if (HeUTF8(he))
344  * utf_u2e(key...);
345  * else // must be ascii
346  * return HePV(he);
347  * we won't match columns with codepoints from 128..255
348  *
349  * For a more concrete example given a column with the name of the unicode
350  * codepoint U+00ae (registered sign) and a UTF8 database and the perl
351  * return_next { "\N{U+00ae}=>'text } would always fail as heUTF8 returns
352  * 0 and HePV() would give us a char * with 1 byte contains the decimal
353  * value 174
354  *
355  * Perl has the brains to know when it should utf8 encode 174 properly, so
356  * here we force it into an SV so that perl will figure it out and do the
357  * right thing
358  *-------------------------
359  */
360 
361  sv = HeSVKEY_force(he);
362  if (HeUTF8(he))
363  SvUTF8_on(sv);
364  ret = sv2cstr(sv);
365 
366  /* free sv */
367  FREETMPS;
368  LEAVE;
369 
370  return ret;
371 }
372 
373 
374 /*
375  * _PG_init() - library load-time initialization
376  *
377  * DO NOT make this static nor change its name!
378  */
379 void
380 _PG_init(void)
381 {
382  /*
383  * Be sure we do initialization only once.
384  *
385  * If initialization fails due to, e.g., plperl_init_interp() throwing an
386  * exception, then we'll return here on the next usage and the user will
387  * get a rather cryptic: ERROR: attempt to redefine parameter
388  * "plperl.use_strict"
389  */
390  static bool inited = false;
391  HASHCTL hash_ctl;
392 
393  if (inited)
394  return;
395 
396  /*
397  * Support localized messages.
398  */
400 
401  /*
402  * Initialize plperl's GUCs.
403  */
404  DefineCustomBoolVariable("plperl.use_strict",
405  gettext_noop("If true, trusted and untrusted Perl code will be compiled in strict mode."),
406  NULL,
408  false,
409  PGC_USERSET, 0,
410  NULL, NULL, NULL);
411 
412  /*
413  * plperl.on_init is marked PGC_SIGHUP to support the idea that it might
414  * be executed in the postmaster (if plperl is loaded into the postmaster
415  * via shared_preload_libraries). This isn't really right either way,
416  * though.
417  */
418  DefineCustomStringVariable("plperl.on_init",
419  gettext_noop("Perl initialization code to execute when a Perl interpreter is initialized."),
420  NULL,
422  NULL,
423  PGC_SIGHUP, 0,
424  NULL, NULL, NULL);
425 
426  /*
427  * plperl.on_plperl_init is marked PGC_SUSET to avoid issues whereby a
428  * user who might not even have USAGE privilege on the plperl language
429  * could nonetheless use SET plperl.on_plperl_init='...' to influence the
430  * behaviour of any existing plperl function that they can execute (which
431  * might be SECURITY DEFINER, leading to a privilege escalation). See
432  * http://archives.postgresql.org/pgsql-hackers/2010-02/msg00281.php and
433  * the overall thread.
434  *
435  * Note that because plperl.use_strict is USERSET, a nefarious user could
436  * set it to be applied against other people's functions. This is judged
437  * OK since the worst result would be an error. Your code oughta pass
438  * use_strict anyway ;-)
439  */
440  DefineCustomStringVariable("plperl.on_plperl_init",
441  gettext_noop("Perl initialization code to execute once when plperl is first used."),
442  NULL,
444  NULL,
445  PGC_SUSET, 0,
446  NULL, NULL, NULL);
447 
448  DefineCustomStringVariable("plperl.on_plperlu_init",
449  gettext_noop("Perl initialization code to execute once when plperlu is first used."),
450  NULL,
452  NULL,
453  PGC_SUSET, 0,
454  NULL, NULL, NULL);
455 
456  EmitWarningsOnPlaceholders("plperl");
457 
458  /*
459  * Create hash tables.
460  */
461  memset(&hash_ctl, 0, sizeof(hash_ctl));
462  hash_ctl.keysize = sizeof(Oid);
463  hash_ctl.entrysize = sizeof(plperl_interp_desc);
464  plperl_interp_hash = hash_create("PL/Perl interpreters",
465  8,
466  &hash_ctl,
468 
469  memset(&hash_ctl, 0, sizeof(hash_ctl));
470  hash_ctl.keysize = sizeof(plperl_proc_key);
471  hash_ctl.entrysize = sizeof(plperl_proc_ptr);
472  plperl_proc_hash = hash_create("PL/Perl procedures",
473  32,
474  &hash_ctl,
476 
477  /*
478  * Save the default opmask.
479  */
480  PLPERL_SET_OPMASK(plperl_opmask);
481 
482  /*
483  * Create the first Perl interpreter, but only partially initialize it.
484  */
486 
487  inited = true;
488 }
489 
490 
491 static void
492 set_interp_require(bool trusted)
493 {
494  if (trusted)
495  {
496  PL_ppaddr[OP_REQUIRE] = pp_require_safe;
497  PL_ppaddr[OP_DOFILE] = pp_require_safe;
498  }
499  else
500  {
501  PL_ppaddr[OP_REQUIRE] = pp_require_orig;
502  PL_ppaddr[OP_DOFILE] = pp_require_orig;
503  }
504 }
505 
506 /*
507  * Cleanup perl interpreters, including running END blocks.
508  * Does not fully undo the actions of _PG_init() nor make it callable again.
509  */
510 static void
512 {
513  HASH_SEQ_STATUS hash_seq;
514  plperl_interp_desc *interp_desc;
515 
516  elog(DEBUG3, "plperl_fini");
517 
518  /*
519  * Indicate that perl is terminating. Disables use of spi_* functions when
520  * running END/DESTROY code. See check_spi_usage_allowed(). Could be
521  * enabled in future, with care, using a transaction
522  * http://archives.postgresql.org/pgsql-hackers/2010-01/msg02743.php
523  */
524  plperl_ending = true;
525 
526  /* Only perform perl cleanup if we're exiting cleanly */
527  if (code)
528  {
529  elog(DEBUG3, "plperl_fini: skipped");
530  return;
531  }
532 
533  /* Zap the "held" interpreter, if we still have it */
535 
536  /* Zap any fully-initialized interpreters */
537  hash_seq_init(&hash_seq, plperl_interp_hash);
538  while ((interp_desc = hash_seq_search(&hash_seq)) != NULL)
539  {
540  if (interp_desc->interp)
541  {
542  activate_interpreter(interp_desc);
543  plperl_destroy_interp(&interp_desc->interp);
544  }
545  }
546 
547  elog(DEBUG3, "plperl_fini: done");
548 }
549 
550 
551 /*
552  * Select and activate an appropriate Perl interpreter.
553  */
554 static void
555 select_perl_context(bool trusted)
556 {
557  Oid user_id;
558  plperl_interp_desc *interp_desc;
559  bool found;
560  PerlInterpreter *interp = NULL;
561 
562  /* Find or create the interpreter hashtable entry for this userid */
563  if (trusted)
564  user_id = GetUserId();
565  else
566  user_id = InvalidOid;
567 
568  interp_desc = hash_search(plperl_interp_hash, &user_id,
569  HASH_ENTER,
570  &found);
571  if (!found)
572  {
573  /* Initialize newly-created hashtable entry */
574  interp_desc->interp = NULL;
575  interp_desc->query_hash = NULL;
576  }
577 
578  /* Make sure we have a query_hash for this interpreter */
579  if (interp_desc->query_hash == NULL)
580  {
581  HASHCTL hash_ctl;
582 
583  memset(&hash_ctl, 0, sizeof(hash_ctl));
584  hash_ctl.keysize = NAMEDATALEN;
585  hash_ctl.entrysize = sizeof(plperl_query_entry);
586  interp_desc->query_hash = hash_create("PL/Perl queries",
587  32,
588  &hash_ctl,
589  HASH_ELEM);
590  }
591 
592  /*
593  * Quick exit if already have an interpreter
594  */
595  if (interp_desc->interp)
596  {
597  activate_interpreter(interp_desc);
598  return;
599  }
600 
601  /*
602  * adopt held interp if free, else create new one if possible
603  */
604  if (plperl_held_interp != NULL)
605  {
606  /* first actual use of a perl interpreter */
607  interp = plperl_held_interp;
608 
609  /*
610  * Reset the plperl_held_interp pointer first; if we fail during init
611  * we don't want to try again with the partially-initialized interp.
612  */
613  plperl_held_interp = NULL;
614 
615  if (trusted)
617  else
619 
620  /* successfully initialized, so arrange for cleanup */
622  }
623  else
624  {
625 #ifdef MULTIPLICITY
626 
627  /*
628  * plperl_init_interp will change Perl's idea of the active
629  * interpreter. Reset plperl_active_interp temporarily, so that if we
630  * hit an error partway through here, we'll make sure to switch back
631  * to a non-broken interpreter before running any other Perl
632  * functions.
633  */
634  plperl_active_interp = NULL;
635 
636  /* Now build the new interpreter */
637  interp = plperl_init_interp();
638 
639  if (trusted)
641  else
643 #else
644  ereport(ERROR,
645  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
646  errmsg("cannot allocate multiple Perl interpreters on this platform")));
647 #endif
648  }
649 
650  set_interp_require(trusted);
651 
652  /*
653  * Since the timing of first use of PL/Perl can't be predicted, any
654  * database interaction during initialization is problematic. Including,
655  * but not limited to, security definer issues. So we only enable access
656  * to the database AFTER on_*_init code has run. See
657  * http://archives.postgresql.org/pgsql-hackers/2010-01/msg02669.php
658  */
659  {
660  dTHX;
661 
662  newXS("PostgreSQL::InServer::SPI::bootstrap",
664 
665  eval_pv("PostgreSQL::InServer::SPI::bootstrap()", FALSE);
666  if (SvTRUE(ERRSV))
667  ereport(ERROR,
668  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
670  errcontext("while executing PostgreSQL::InServer::SPI::bootstrap")));
671  }
672 
673  /* Fully initialized, so mark the hashtable entry valid */
674  interp_desc->interp = interp;
675 
676  /* And mark this as the active interpreter */
677  plperl_active_interp = interp_desc;
678 }
679 
680 /*
681  * Make the specified interpreter the active one
682  *
683  * A call with NULL does nothing. This is so that "restoring" to a previously
684  * null state of plperl_active_interp doesn't result in useless thrashing.
685  */
686 static void
688 {
689  if (interp_desc && plperl_active_interp != interp_desc)
690  {
691  Assert(interp_desc->interp);
692  PERL_SET_CONTEXT(interp_desc->interp);
693  /* trusted iff user_id isn't InvalidOid */
694  set_interp_require(OidIsValid(interp_desc->user_id));
695  plperl_active_interp = interp_desc;
696  }
697 }
698 
699 /*
700  * Create a new Perl interpreter.
701  *
702  * We initialize the interpreter as far as we can without knowing whether
703  * it will become a trusted or untrusted interpreter; in particular, the
704  * plperl.on_init code will get executed. Later, either plperl_trusted_init
705  * or plperl_untrusted_init must be called to complete the initialization.
706  */
707 static PerlInterpreter *
709 {
710  PerlInterpreter *plperl;
711 
712  static char *embedding[3 + 2] = {
713  "", "-e", PLC_PERLBOOT
714  };
715  int nargs = 3;
716 
717 #ifdef WIN32
718 
719  /*
720  * The perl library on startup does horrible things like call
721  * setlocale(LC_ALL,""). We have protected against that on most platforms
722  * by setting the environment appropriately. However, on Windows,
723  * setlocale() does not consult the environment, so we need to save the
724  * existing locale settings before perl has a chance to mangle them and
725  * restore them after its dirty deeds are done.
726  *
727  * MSDN ref:
728  * http://msdn.microsoft.com/library/en-us/vclib/html/_crt_locale.asp
729  *
730  * It appears that we only need to do this on interpreter startup, and
731  * subsequent calls to the interpreter don't mess with the locale
732  * settings.
733  *
734  * We restore them using setlocale_perl(), defined below, so that Perl
735  * doesn't have a different idea of the locale from Postgres.
736  *
737  */
738 
739  char *loc;
740  char *save_collate,
741  *save_ctype,
742  *save_monetary,
743  *save_numeric,
744  *save_time;
745 
746  loc = setlocale(LC_COLLATE, NULL);
747  save_collate = loc ? pstrdup(loc) : NULL;
748  loc = setlocale(LC_CTYPE, NULL);
749  save_ctype = loc ? pstrdup(loc) : NULL;
750  loc = setlocale(LC_MONETARY, NULL);
751  save_monetary = loc ? pstrdup(loc) : NULL;
752  loc = setlocale(LC_NUMERIC, NULL);
753  save_numeric = loc ? pstrdup(loc) : NULL;
754  loc = setlocale(LC_TIME, NULL);
755  save_time = loc ? pstrdup(loc) : NULL;
756 
757 #define PLPERL_RESTORE_LOCALE(name, saved) \
758  STMT_START { \
759  if (saved != NULL) { setlocale_perl(name, saved); pfree(saved); } \
760  } STMT_END
761 #endif /* WIN32 */
762 
764  {
765  embedding[nargs++] = "-e";
766  embedding[nargs++] = plperl_on_init;
767  }
768 
769  /*
770  * The perl API docs state that PERL_SYS_INIT3 should be called before
771  * allocating interpreters. Unfortunately, on some platforms this fails in
772  * the Perl_do_taint() routine, which is called when the platform is using
773  * the system's malloc() instead of perl's own. Other platforms, notably
774  * Windows, fail if PERL_SYS_INIT3 is not called. So we call it if it's
775  * available, unless perl is using the system malloc(), which is true when
776  * MYMALLOC is set.
777  */
778 #if defined(PERL_SYS_INIT3) && !defined(MYMALLOC)
779  {
780  static int perl_sys_init_done;
781 
782  /* only call this the first time through, as per perlembed man page */
783  if (!perl_sys_init_done)
784  {
785  char *dummy_env[1] = {NULL};
786 
787  PERL_SYS_INIT3(&nargs, (char ***) &embedding, (char ***) &dummy_env);
788 
789  /*
790  * For unclear reasons, PERL_SYS_INIT3 sets the SIGFPE handler to
791  * SIG_IGN. Aside from being extremely unfriendly behavior for a
792  * library, this is dumb on the grounds that the results of a
793  * SIGFPE in this state are undefined according to POSIX, and in
794  * fact you get a forced process kill at least on Linux. Hence,
795  * restore the SIGFPE handler to the backend's standard setting.
796  * (See Perl bug 114574 for more information.)
797  */
799 
800  perl_sys_init_done = 1;
801  /* quiet warning if PERL_SYS_INIT3 doesn't use the third argument */
802  dummy_env[0] = NULL;
803  }
804  }
805 #endif
806 
807  plperl = perl_alloc();
808  if (!plperl)
809  elog(ERROR, "could not allocate Perl interpreter");
810 
811  PERL_SET_CONTEXT(plperl);
812  perl_construct(plperl);
813 
814  /*
815  * Run END blocks in perl_destruct instead of perl_run. Note that dTHX
816  * loads up a pointer to the current interpreter, so we have to postpone
817  * it to here rather than put it at the function head.
818  */
819  {
820  dTHX;
821 
822  PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
823 
824  /*
825  * Record the original function for the 'require' and 'dofile'
826  * opcodes. (They share the same implementation.) Ensure it's used
827  * for new interpreters.
828  */
829  if (!pp_require_orig)
830  pp_require_orig = PL_ppaddr[OP_REQUIRE];
831  else
832  {
833  PL_ppaddr[OP_REQUIRE] = pp_require_orig;
834  PL_ppaddr[OP_DOFILE] = pp_require_orig;
835  }
836 
837 #ifdef PLPERL_ENABLE_OPMASK_EARLY
838 
839  /*
840  * For regression testing to prove that the PLC_PERLBOOT and
841  * PLC_TRUSTED code doesn't even compile any unsafe ops. In future
842  * there may be a valid need for them to do so, in which case this
843  * could be softened (perhaps moved to plperl_trusted_init()) or
844  * removed.
845  */
846  PL_op_mask = plperl_opmask;
847 #endif
848 
849  if (perl_parse(plperl, plperl_init_shared_libs,
850  nargs, embedding, NULL) != 0)
851  ereport(ERROR,
852  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
854  errcontext("while parsing Perl initialization")));
855 
856  if (perl_run(plperl) != 0)
857  ereport(ERROR,
858  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
860  errcontext("while running Perl initialization")));
861 
862 #ifdef PLPERL_RESTORE_LOCALE
863  PLPERL_RESTORE_LOCALE(LC_COLLATE, save_collate);
864  PLPERL_RESTORE_LOCALE(LC_CTYPE, save_ctype);
865  PLPERL_RESTORE_LOCALE(LC_MONETARY, save_monetary);
866  PLPERL_RESTORE_LOCALE(LC_NUMERIC, save_numeric);
867  PLPERL_RESTORE_LOCALE(LC_TIME, save_time);
868 #endif
869  }
870 
871  return plperl;
872 }
873 
874 
875 /*
876  * Our safe implementation of the require opcode.
877  * This is safe because it's completely unable to load any code.
878  * If the requested file/module has already been loaded it'll return true.
879  * If not, it'll die.
880  * So now "use Foo;" will work iff Foo has already been loaded.
881  */
882 static OP *
884 {
885  dVAR;
886  dSP;
887  SV *sv,
888  **svp;
889  char *name;
890  STRLEN len;
891 
892  sv = POPs;
893  name = SvPV(sv, len);
894  if (!(name && len > 0 && *name))
895  RETPUSHNO;
896 
897  svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
898  if (svp && *svp != &PL_sv_undef)
899  RETPUSHYES;
900 
901  DIE(aTHX_ "Unable to load %s into plperl", name);
902 
903  /*
904  * In most Perl versions, DIE() expands to a return statement, so the next
905  * line is not necessary. But in versions between but not including
906  * 5.11.1 and 5.13.3 it does not, so the next line is necessary to avoid a
907  * "control reaches end of non-void function" warning from gcc. Other
908  * compilers such as Solaris Studio will, however, issue a "statement not
909  * reached" warning instead.
910  */
911  return NULL;
912 }
913 
914 
915 /*
916  * Destroy one Perl interpreter ... actually we just run END blocks.
917  *
918  * Caller must have ensured this interpreter is the active one.
919  */
920 static void
921 plperl_destroy_interp(PerlInterpreter **interp)
922 {
923  if (interp && *interp)
924  {
925  /*
926  * Only a very minimal destruction is performed: - just call END
927  * blocks.
928  *
929  * We could call perl_destruct() but we'd need to audit its actions
930  * very carefully and work-around any that impact us. (Calling
931  * sv_clean_objs() isn't an option because it's not part of perl's
932  * public API so isn't portably available.) Meanwhile END blocks can
933  * be used to perform manual cleanup.
934  */
935  dTHX;
936 
937  /* Run END blocks - based on perl's perl_destruct() */
938  if (PL_exit_flags & PERL_EXIT_DESTRUCT_END)
939  {
940  dJMPENV;
941  int x = 0;
942 
943  JMPENV_PUSH(x);
944  PERL_UNUSED_VAR(x);
945  if (PL_endav && !PL_minus_c)
946  call_list(PL_scopestack_ix, PL_endav);
947  JMPENV_POP;
948  }
949  LEAVE;
950  FREETMPS;
951 
952  *interp = NULL;
953  }
954 }
955 
956 /*
957  * Initialize the current Perl interpreter as a trusted interp
958  */
959 static void
961 {
962  dTHX;
963  HV *stash;
964  SV *sv;
965  char *key;
966  I32 klen;
967 
968  /* use original require while we set up */
969  PL_ppaddr[OP_REQUIRE] = pp_require_orig;
970  PL_ppaddr[OP_DOFILE] = pp_require_orig;
971 
972  eval_pv(PLC_TRUSTED, FALSE);
973  if (SvTRUE(ERRSV))
974  ereport(ERROR,
975  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
977  errcontext("while executing PLC_TRUSTED")));
978 
979  /*
980  * Force loading of utf8 module now to prevent errors that can arise from
981  * the regex code later trying to load utf8 modules. See
982  * http://rt.perl.org/rt3/Ticket/Display.html?id=47576
983  */
984  eval_pv("my $a=chr(0x100); return $a =~ /\\xa9/i", FALSE);
985  if (SvTRUE(ERRSV))
986  ereport(ERROR,
987  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
989  errcontext("while executing utf8fix")));
990 
991  /*
992  * Lock down the interpreter
993  */
994 
995  /* switch to the safe require/dofile opcode for future code */
996  PL_ppaddr[OP_REQUIRE] = pp_require_safe;
997  PL_ppaddr[OP_DOFILE] = pp_require_safe;
998 
999  /*
1000  * prevent (any more) unsafe opcodes being compiled PL_op_mask is per
1001  * interpreter, so this only needs to be set once
1002  */
1003  PL_op_mask = plperl_opmask;
1004 
1005  /* delete the DynaLoader:: namespace so extensions can't be loaded */
1006  stash = gv_stashpv("DynaLoader", GV_ADDWARN);
1007  hv_iterinit(stash);
1008  while ((sv = hv_iternextsv(stash, &key, &klen)))
1009  {
1010  if (!isGV_with_GP(sv) || !GvCV(sv))
1011  continue;
1012  SvREFCNT_dec(GvCV(sv)); /* free the CV */
1013  GvCV_set(sv, NULL); /* prevent call via GV */
1014  }
1015  hv_clear(stash);
1016 
1017  /* invalidate assorted caches */
1018  ++PL_sub_generation;
1019  hv_clear(PL_stashcache);
1020 
1021  /*
1022  * Execute plperl.on_plperl_init in the locked-down interpreter
1023  */
1025  {
1027  /* XXX need to find a way to determine a better errcode here */
1028  if (SvTRUE(ERRSV))
1029  ereport(ERROR,
1030  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
1032  errcontext("while executing plperl.on_plperl_init")));
1033  }
1034 }
1035 
1036 
1037 /*
1038  * Initialize the current Perl interpreter as an untrusted interp
1039  */
1040 static void
1042 {
1043  dTHX;
1044 
1045  /*
1046  * Nothing to do except execute plperl.on_plperlu_init
1047  */
1049  {
1051  if (SvTRUE(ERRSV))
1052  ereport(ERROR,
1053  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
1055  errcontext("while executing plperl.on_plperlu_init")));
1056  }
1057 }
1058 
1059 
1060 /*
1061  * Perl likes to put a newline after its error messages; clean up such
1062  */
1063 static char *
1064 strip_trailing_ws(const char *msg)
1065 {
1066  char *res = pstrdup(msg);
1067  int len = strlen(res);
1068 
1069  while (len > 0 && isspace((unsigned char) res[len - 1]))
1070  res[--len] = '\0';
1071  return res;
1072 }
1073 
1074 
1075 /* Build a tuple from a hash. */
1076 
1077 static HeapTuple
1079 {
1080  dTHX;
1081  Datum *values;
1082  bool *nulls;
1083  HE *he;
1084  HeapTuple tup;
1085 
1086  values = palloc0(sizeof(Datum) * td->natts);
1087  nulls = palloc(sizeof(bool) * td->natts);
1088  memset(nulls, true, sizeof(bool) * td->natts);
1089 
1090  hv_iterinit(perlhash);
1091  while ((he = hv_iternext(perlhash)))
1092  {
1093  SV *val = HeVAL(he);
1094  char *key = hek2cstr(he);
1095  int attn = SPI_fnumber(td, key);
1096  Form_pg_attribute attr = TupleDescAttr(td, attn - 1);
1097 
1098  if (attn == SPI_ERROR_NOATTRIBUTE)
1099  ereport(ERROR,
1100  (errcode(ERRCODE_UNDEFINED_COLUMN),
1101  errmsg("Perl hash contains nonexistent column \"%s\"",
1102  key)));
1103  if (attn <= 0)
1104  ereport(ERROR,
1105  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1106  errmsg("cannot set system attribute \"%s\"",
1107  key)));
1108 
1109  values[attn - 1] = plperl_sv_to_datum(val,
1110  attr->atttypid,
1111  attr->atttypmod,
1112  NULL,
1113  NULL,
1114  InvalidOid,
1115  &nulls[attn - 1]);
1116 
1117  pfree(key);
1118  }
1119  hv_iterinit(perlhash);
1120 
1121  tup = heap_form_tuple(td, values, nulls);
1122  pfree(values);
1123  pfree(nulls);
1124  return tup;
1125 }
1126 
1127 /* convert a hash reference to a datum */
1128 static Datum
1130 {
1131  HeapTuple tup = plperl_build_tuple_result((HV *) SvRV(src), td);
1132 
1133  return HeapTupleGetDatum(tup);
1134 }
1135 
1136 /*
1137  * if we are an array ref return the reference. this is special in that if we
1138  * are a PostgreSQL::InServer::ARRAY object we will return the 'magic' array.
1139  */
1140 static SV *
1142 {
1143  dTHX;
1144 
1145  if (SvOK(sv) && SvROK(sv))
1146  {
1147  if (SvTYPE(SvRV(sv)) == SVt_PVAV)
1148  return sv;
1149  else if (sv_isa(sv, "PostgreSQL::InServer::ARRAY"))
1150  {
1151  HV *hv = (HV *) SvRV(sv);
1152  SV **sav = hv_fetch_string(hv, "array");
1153 
1154  if (*sav && SvOK(*sav) && SvROK(*sav) &&
1155  SvTYPE(SvRV(*sav)) == SVt_PVAV)
1156  return *sav;
1157 
1158  elog(ERROR, "could not get array reference from PostgreSQL::InServer::ARRAY object");
1159  }
1160  }
1161  return NULL;
1162 }
1163 
1164 /*
1165  * helper function for plperl_array_to_datum, recurses for multi-D arrays
1166  */
1167 static void
1169  int *ndims, int *dims, int cur_depth,
1170  Oid arraytypid, Oid elemtypid, int32 typmod,
1171  FmgrInfo *finfo, Oid typioparam)
1172 {
1173  dTHX;
1174  int i;
1175  int len = av_len(av) + 1;
1176 
1177  for (i = 0; i < len; i++)
1178  {
1179  /* fetch the array element */
1180  SV **svp = av_fetch(av, i, FALSE);
1181 
1182  /* see if this element is an array, if so get that */
1183  SV *sav = svp ? get_perl_array_ref(*svp) : NULL;
1184 
1185  /* multi-dimensional array? */
1186  if (sav)
1187  {
1188  AV *nav = (AV *) SvRV(sav);
1189 
1190  /* dimensionality checks */
1191  if (cur_depth + 1 > MAXDIM)
1192  ereport(ERROR,
1193  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
1194  errmsg("number of array dimensions (%d) exceeds the maximum allowed (%d)",
1195  cur_depth + 1, MAXDIM)));
1196 
1197  /* set size when at first element in this level, else compare */
1198  if (i == 0 && *ndims == cur_depth)
1199  {
1200  dims[*ndims] = av_len(nav) + 1;
1201  (*ndims)++;
1202  }
1203  else if (av_len(nav) + 1 != dims[cur_depth])
1204  ereport(ERROR,
1205  (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
1206  errmsg("multidimensional arrays must have array expressions with matching dimensions")));
1207 
1208  /* recurse to fetch elements of this sub-array */
1209  array_to_datum_internal(nav, astate,
1210  ndims, dims, cur_depth + 1,
1211  arraytypid, elemtypid, typmod,
1212  finfo, typioparam);
1213  }
1214  else
1215  {
1216  Datum dat;
1217  bool isnull;
1218 
1219  /* scalar after some sub-arrays at same level? */
1220  if (*ndims != cur_depth)
1221  ereport(ERROR,
1222  (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
1223  errmsg("multidimensional arrays must have array expressions with matching dimensions")));
1224 
1225  dat = plperl_sv_to_datum(svp ? *svp : NULL,
1226  elemtypid,
1227  typmod,
1228  NULL,
1229  finfo,
1230  typioparam,
1231  &isnull);
1232 
1233  (void) accumArrayResult(astate, dat, isnull,
1234  elemtypid, CurrentMemoryContext);
1235  }
1236  }
1237 }
1238 
1239 /*
1240  * convert perl array ref to a datum
1241  */
1242 static Datum
1243 plperl_array_to_datum(SV *src, Oid typid, int32 typmod)
1244 {
1245  dTHX;
1246  ArrayBuildState *astate;
1247  Oid elemtypid;
1248  FmgrInfo finfo;
1249  Oid typioparam;
1250  int dims[MAXDIM];
1251  int lbs[MAXDIM];
1252  int ndims = 1;
1253  int i;
1254 
1255  elemtypid = get_element_type(typid);
1256  if (!elemtypid)
1257  ereport(ERROR,
1258  (errcode(ERRCODE_DATATYPE_MISMATCH),
1259  errmsg("cannot convert Perl array to non-array type %s",
1260  format_type_be(typid))));
1261 
1262  astate = initArrayResult(elemtypid, CurrentMemoryContext, true);
1263 
1264  _sv_to_datum_finfo(elemtypid, &finfo, &typioparam);
1265 
1266  memset(dims, 0, sizeof(dims));
1267  dims[0] = av_len((AV *) SvRV(src)) + 1;
1268 
1269  array_to_datum_internal((AV *) SvRV(src), astate,
1270  &ndims, dims, 1,
1271  typid, elemtypid, typmod,
1272  &finfo, typioparam);
1273 
1274  /* ensure we get zero-D array for no inputs, as per PG convention */
1275  if (dims[0] <= 0)
1276  ndims = 0;
1277 
1278  for (i = 0; i < ndims; i++)
1279  lbs[i] = 1;
1280 
1281  return makeMdArrayResult(astate, ndims, dims, lbs,
1282  CurrentMemoryContext, true);
1283 }
1284 
1285 /* Get the information needed to convert data to the specified PG type */
1286 static void
1287 _sv_to_datum_finfo(Oid typid, FmgrInfo *finfo, Oid *typioparam)
1288 {
1289  Oid typinput;
1290 
1291  /* XXX would be better to cache these lookups */
1292  getTypeInputInfo(typid,
1293  &typinput, typioparam);
1294  fmgr_info(typinput, finfo);
1295 }
1296 
1297 /*
1298  * convert Perl SV to PG datum of type typid, typmod typmod
1299  *
1300  * Pass the PL/Perl function's fcinfo when attempting to convert to the
1301  * function's result type; otherwise pass NULL. This is used when we need to
1302  * resolve the actual result type of a function returning RECORD.
1303  *
1304  * finfo and typioparam should be the results of _sv_to_datum_finfo for the
1305  * given typid, or NULL/InvalidOid to let this function do the lookups.
1306  *
1307  * *isnull is an output parameter.
1308  */
1309 static Datum
1310 plperl_sv_to_datum(SV *sv, Oid typid, int32 typmod,
1311  FunctionCallInfo fcinfo,
1312  FmgrInfo *finfo, Oid typioparam,
1313  bool *isnull)
1314 {
1315  FmgrInfo tmp;
1316  Oid funcid;
1317 
1318  /* we might recurse */
1320 
1321  *isnull = false;
1322 
1323  /*
1324  * Return NULL if result is undef, or if we're in a function returning
1325  * VOID. In the latter case, we should pay no attention to the last Perl
1326  * statement's result, and this is a convenient means to ensure that.
1327  */
1328  if (!sv || !SvOK(sv) || typid == VOIDOID)
1329  {
1330  /* look up type info if they did not pass it */
1331  if (!finfo)
1332  {
1333  _sv_to_datum_finfo(typid, &tmp, &typioparam);
1334  finfo = &tmp;
1335  }
1336  *isnull = true;
1337  /* must call typinput in case it wants to reject NULL */
1338  return InputFunctionCall(finfo, NULL, typioparam, typmod);
1339  }
1340  else if ((funcid = get_transform_tosql(typid, current_call_data->prodesc->lang_oid, current_call_data->prodesc->trftypes)))
1341  return OidFunctionCall1(funcid, PointerGetDatum(sv));
1342  else if (SvROK(sv))
1343  {
1344  /* handle references */
1345  SV *sav = get_perl_array_ref(sv);
1346 
1347  if (sav)
1348  {
1349  /* handle an arrayref */
1350  return plperl_array_to_datum(sav, typid, typmod);
1351  }
1352  else if (SvTYPE(SvRV(sv)) == SVt_PVHV)
1353  {
1354  /* handle a hashref */
1355  Datum ret;
1356  TupleDesc td;
1357  bool isdomain;
1358 
1359  if (!type_is_rowtype(typid))
1360  ereport(ERROR,
1361  (errcode(ERRCODE_DATATYPE_MISMATCH),
1362  errmsg("cannot convert Perl hash to non-composite type %s",
1363  format_type_be(typid))));
1364 
1365  td = lookup_rowtype_tupdesc_domain(typid, typmod, true);
1366  if (td != NULL)
1367  {
1368  /* Did we look through a domain? */
1369  isdomain = (typid != td->tdtypeid);
1370  }
1371  else
1372  {
1373  /* Must be RECORD, try to resolve based on call info */
1374  TypeFuncClass funcclass;
1375 
1376  if (fcinfo)
1377  funcclass = get_call_result_type(fcinfo, &typid, &td);
1378  else
1379  funcclass = TYPEFUNC_OTHER;
1380  if (funcclass != TYPEFUNC_COMPOSITE &&
1381  funcclass != TYPEFUNC_COMPOSITE_DOMAIN)
1382  ereport(ERROR,
1383  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1384  errmsg("function returning record called in context "
1385  "that cannot accept type record")));
1386  Assert(td);
1387  isdomain = (funcclass == TYPEFUNC_COMPOSITE_DOMAIN);
1388  }
1389 
1390  ret = plperl_hash_to_datum(sv, td);
1391 
1392  if (isdomain)
1393  domain_check(ret, false, typid, NULL, NULL);
1394 
1395  /* Release on the result of get_call_result_type is harmless */
1396  ReleaseTupleDesc(td);
1397 
1398  return ret;
1399  }
1400 
1401  /*
1402  * If it's a reference to something else, such as a scalar, just
1403  * recursively look through the reference.
1404  */
1405  return plperl_sv_to_datum(SvRV(sv), typid, typmod,
1406  fcinfo, finfo, typioparam,
1407  isnull);
1408  }
1409  else
1410  {
1411  /* handle a string/number */
1412  Datum ret;
1413  char *str = sv2cstr(sv);
1414 
1415  /* did not pass in any typeinfo? look it up */
1416  if (!finfo)
1417  {
1418  _sv_to_datum_finfo(typid, &tmp, &typioparam);
1419  finfo = &tmp;
1420  }
1421 
1422  ret = InputFunctionCall(finfo, str, typioparam, typmod);
1423  pfree(str);
1424 
1425  return ret;
1426  }
1427 }
1428 
1429 /* Convert the perl SV to a string returned by the type output function */
1430 char *
1431 plperl_sv_to_literal(SV *sv, char *fqtypename)
1432 {
1433  Datum str = CStringGetDatum(fqtypename);
1434  Oid typid = DirectFunctionCall1(regtypein, str);
1435  Oid typoutput;
1436  Datum datum;
1437  bool typisvarlena,
1438  isnull;
1439 
1440  if (!OidIsValid(typid))
1441  ereport(ERROR,
1442  (errcode(ERRCODE_UNDEFINED_OBJECT),
1443  errmsg("lookup failed for type %s", fqtypename)));
1444 
1445  datum = plperl_sv_to_datum(sv,
1446  typid, -1,
1447  NULL, NULL, InvalidOid,
1448  &isnull);
1449 
1450  if (isnull)
1451  return NULL;
1452 
1453  getTypeOutputInfo(typid,
1454  &typoutput, &typisvarlena);
1455 
1456  return OidOutputFunctionCall(typoutput, datum);
1457 }
1458 
1459 /*
1460  * Convert PostgreSQL array datum to a perl array reference.
1461  *
1462  * typid is arg's OID, which must be an array type.
1463  */
1464 static SV *
1466 {
1467  dTHX;
1468  ArrayType *ar = DatumGetArrayTypeP(arg);
1469  Oid elementtype = ARR_ELEMTYPE(ar);
1470  int16 typlen;
1471  bool typbyval;
1472  char typalign,
1473  typdelim;
1474  Oid typioparam;
1475  Oid typoutputfunc;
1476  Oid transform_funcid;
1477  int i,
1478  nitems,
1479  *dims;
1480  plperl_array_info *info;
1481  SV *av;
1482  HV *hv;
1483 
1484  /*
1485  * Currently we make no effort to cache any of the stuff we look up here,
1486  * which is bad.
1487  */
1488  info = palloc0(sizeof(plperl_array_info));
1489 
1490  /* get element type information, including output conversion function */
1491  get_type_io_data(elementtype, IOFunc_output,
1492  &typlen, &typbyval, &typalign,
1493  &typdelim, &typioparam, &typoutputfunc);
1494 
1495  /* Check for a transform function */
1496  transform_funcid = get_transform_fromsql(elementtype,
1497  current_call_data->prodesc->lang_oid,
1498  current_call_data->prodesc->trftypes);
1499 
1500  /* Look up transform or output function as appropriate */
1501  if (OidIsValid(transform_funcid))
1502  fmgr_info(transform_funcid, &info->transform_proc);
1503  else
1504  fmgr_info(typoutputfunc, &info->proc);
1505 
1506  info->elem_is_rowtype = type_is_rowtype(elementtype);
1507 
1508  /* Get the number and bounds of array dimensions */
1509  info->ndims = ARR_NDIM(ar);
1510  dims = ARR_DIMS(ar);
1511 
1512  /* No dimensions? Return an empty array */
1513  if (info->ndims == 0)
1514  {
1515  av = newRV_noinc((SV *) newAV());
1516  }
1517  else
1518  {
1519  deconstruct_array(ar, elementtype, typlen, typbyval,
1520  typalign, &info->elements, &info->nulls,
1521  &nitems);
1522 
1523  /* Get total number of elements in each dimension */
1524  info->nelems = palloc(sizeof(int) * info->ndims);
1525  info->nelems[0] = nitems;
1526  for (i = 1; i < info->ndims; i++)
1527  info->nelems[i] = info->nelems[i - 1] / dims[i - 1];
1528 
1529  av = split_array(info, 0, nitems, 0);
1530  }
1531 
1532  hv = newHV();
1533  (void) hv_store(hv, "array", 5, av, 0);
1534  (void) hv_store(hv, "typeoid", 7, newSVuv(typid), 0);
1535 
1536  return sv_bless(newRV_noinc((SV *) hv),
1537  gv_stashpv("PostgreSQL::InServer::ARRAY", 0));
1538 }
1539 
1540 /*
1541  * Recursively form array references from splices of the initial array
1542  */
1543 static SV *
1544 split_array(plperl_array_info *info, int first, int last, int nest)
1545 {
1546  dTHX;
1547  int i;
1548  AV *result;
1549 
1550  /* we should only be called when we have something to split */
1551  Assert(info->ndims > 0);
1552 
1553  /* since this function recurses, it could be driven to stack overflow */
1555 
1556  /*
1557  * Base case, return a reference to a single-dimensional array
1558  */
1559  if (nest >= info->ndims - 1)
1560  return make_array_ref(info, first, last);
1561 
1562  result = newAV();
1563  for (i = first; i < last; i += info->nelems[nest + 1])
1564  {
1565  /* Recursively form references to arrays of lower dimensions */
1566  SV *ref = split_array(info, i, i + info->nelems[nest + 1], nest + 1);
1567 
1568  av_push(result, ref);
1569  }
1570  return newRV_noinc((SV *) result);
1571 }
1572 
1573 /*
1574  * Create a Perl reference from a one-dimensional C array, converting
1575  * composite type elements to hash references.
1576  */
1577 static SV *
1578 make_array_ref(plperl_array_info *info, int first, int last)
1579 {
1580  dTHX;
1581  int i;
1582  AV *result = newAV();
1583 
1584  for (i = first; i < last; i++)
1585  {
1586  if (info->nulls[i])
1587  {
1588  /*
1589  * We can't use &PL_sv_undef here. See "AVs, HVs and undefined
1590  * values" in perlguts.
1591  */
1592  av_push(result, newSV(0));
1593  }
1594  else
1595  {
1596  Datum itemvalue = info->elements[i];
1597 
1598  if (info->transform_proc.fn_oid)
1599  av_push(result, (SV *) DatumGetPointer(FunctionCall1(&info->transform_proc, itemvalue)));
1600  else if (info->elem_is_rowtype)
1601  /* Handle composite type elements */
1602  av_push(result, plperl_hash_from_datum(itemvalue));
1603  else
1604  {
1605  char *val = OutputFunctionCall(&info->proc, itemvalue);
1606 
1607  av_push(result, cstr2sv(val));
1608  }
1609  }
1610  }
1611  return newRV_noinc((SV *) result);
1612 }
1613 
1614 /* Set up the arguments for a trigger call. */
1615 static SV *
1617 {
1618  dTHX;
1619  TriggerData *tdata;
1620  TupleDesc tupdesc;
1621  int i;
1622  char *level;
1623  char *event;
1624  char *relid;
1625  char *when;
1626  HV *hv;
1627 
1628  hv = newHV();
1629  hv_ksplit(hv, 12); /* pre-grow the hash */
1630 
1631  tdata = (TriggerData *) fcinfo->context;
1632  tupdesc = tdata->tg_relation->rd_att;
1633 
1635  ObjectIdGetDatum(tdata->tg_relation->rd_id)));
1636 
1637  hv_store_string(hv, "name", cstr2sv(tdata->tg_trigger->tgname));
1638  hv_store_string(hv, "relid", cstr2sv(relid));
1639 
1640  /*
1641  * Note: In BEFORE trigger, stored generated columns are not computed yet,
1642  * so don't make them accessible in NEW row.
1643  */
1644 
1645  if (TRIGGER_FIRED_BY_INSERT(tdata->tg_event))
1646  {
1647  event = "INSERT";
1648  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1649  hv_store_string(hv, "new",
1651  tupdesc,
1652  !TRIGGER_FIRED_BEFORE(tdata->tg_event)));
1653  }
1654  else if (TRIGGER_FIRED_BY_DELETE(tdata->tg_event))
1655  {
1656  event = "DELETE";
1657  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1658  hv_store_string(hv, "old",
1660  tupdesc,
1661  true));
1662  }
1663  else if (TRIGGER_FIRED_BY_UPDATE(tdata->tg_event))
1664  {
1665  event = "UPDATE";
1666  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1667  {
1668  hv_store_string(hv, "old",
1670  tupdesc,
1671  true));
1672  hv_store_string(hv, "new",
1674  tupdesc,
1675  !TRIGGER_FIRED_BEFORE(tdata->tg_event)));
1676  }
1677  }
1678  else if (TRIGGER_FIRED_BY_TRUNCATE(tdata->tg_event))
1679  event = "TRUNCATE";
1680  else
1681  event = "UNKNOWN";
1682 
1683  hv_store_string(hv, "event", cstr2sv(event));
1684  hv_store_string(hv, "argc", newSViv(tdata->tg_trigger->tgnargs));
1685 
1686  if (tdata->tg_trigger->tgnargs > 0)
1687  {
1688  AV *av = newAV();
1689 
1690  av_extend(av, tdata->tg_trigger->tgnargs);
1691  for (i = 0; i < tdata->tg_trigger->tgnargs; i++)
1692  av_push(av, cstr2sv(tdata->tg_trigger->tgargs[i]));
1693  hv_store_string(hv, "args", newRV_noinc((SV *) av));
1694  }
1695 
1696  hv_store_string(hv, "relname",
1698 
1699  hv_store_string(hv, "table_name",
1701 
1702  hv_store_string(hv, "table_schema",
1704 
1705  if (TRIGGER_FIRED_BEFORE(tdata->tg_event))
1706  when = "BEFORE";
1707  else if (TRIGGER_FIRED_AFTER(tdata->tg_event))
1708  when = "AFTER";
1709  else if (TRIGGER_FIRED_INSTEAD(tdata->tg_event))
1710  when = "INSTEAD OF";
1711  else
1712  when = "UNKNOWN";
1713  hv_store_string(hv, "when", cstr2sv(when));
1714 
1715  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1716  level = "ROW";
1717  else if (TRIGGER_FIRED_FOR_STATEMENT(tdata->tg_event))
1718  level = "STATEMENT";
1719  else
1720  level = "UNKNOWN";
1721  hv_store_string(hv, "level", cstr2sv(level));
1722 
1723  return newRV_noinc((SV *) hv);
1724 }
1725 
1726 
1727 /* Set up the arguments for an event trigger call. */
1728 static SV *
1730 {
1731  dTHX;
1732  EventTriggerData *tdata;
1733  HV *hv;
1734 
1735  hv = newHV();
1736 
1737  tdata = (EventTriggerData *) fcinfo->context;
1738 
1739  hv_store_string(hv, "event", cstr2sv(tdata->event));
1740  hv_store_string(hv, "tag", cstr2sv(GetCommandTagName(tdata->tag)));
1741 
1742  return newRV_noinc((SV *) hv);
1743 }
1744 
1745 /* Construct the modified new tuple to be returned from a trigger. */
1746 static HeapTuple
1748 {
1749  dTHX;
1750  SV **svp;
1751  HV *hvNew;
1752  HE *he;
1753  HeapTuple rtup;
1754  TupleDesc tupdesc;
1755  int natts;
1756  Datum *modvalues;
1757  bool *modnulls;
1758  bool *modrepls;
1759 
1760  svp = hv_fetch_string(hvTD, "new");
1761  if (!svp)
1762  ereport(ERROR,
1763  (errcode(ERRCODE_UNDEFINED_COLUMN),
1764  errmsg("$_TD->{new} does not exist")));
1765  if (!SvOK(*svp) || !SvROK(*svp) || SvTYPE(SvRV(*svp)) != SVt_PVHV)
1766  ereport(ERROR,
1767  (errcode(ERRCODE_DATATYPE_MISMATCH),
1768  errmsg("$_TD->{new} is not a hash reference")));
1769  hvNew = (HV *) SvRV(*svp);
1770 
1771  tupdesc = tdata->tg_relation->rd_att;
1772  natts = tupdesc->natts;
1773 
1774  modvalues = (Datum *) palloc0(natts * sizeof(Datum));
1775  modnulls = (bool *) palloc0(natts * sizeof(bool));
1776  modrepls = (bool *) palloc0(natts * sizeof(bool));
1777 
1778  hv_iterinit(hvNew);
1779  while ((he = hv_iternext(hvNew)))
1780  {
1781  char *key = hek2cstr(he);
1782  SV *val = HeVAL(he);
1783  int attn = SPI_fnumber(tupdesc, key);
1784  Form_pg_attribute attr = TupleDescAttr(tupdesc, attn - 1);
1785 
1786  if (attn == SPI_ERROR_NOATTRIBUTE)
1787  ereport(ERROR,
1788  (errcode(ERRCODE_UNDEFINED_COLUMN),
1789  errmsg("Perl hash contains nonexistent column \"%s\"",
1790  key)));
1791  if (attn <= 0)
1792  ereport(ERROR,
1793  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1794  errmsg("cannot set system attribute \"%s\"",
1795  key)));
1796  if (attr->attgenerated)
1797  ereport(ERROR,
1798  (errcode(ERRCODE_E_R_I_E_TRIGGER_PROTOCOL_VIOLATED),
1799  errmsg("cannot set generated column \"%s\"",
1800  key)));
1801 
1802  modvalues[attn - 1] = plperl_sv_to_datum(val,
1803  attr->atttypid,
1804  attr->atttypmod,
1805  NULL,
1806  NULL,
1807  InvalidOid,
1808  &modnulls[attn - 1]);
1809  modrepls[attn - 1] = true;
1810 
1811  pfree(key);
1812  }
1813  hv_iterinit(hvNew);
1814 
1815  rtup = heap_modify_tuple(otup, tupdesc, modvalues, modnulls, modrepls);
1816 
1817  pfree(modvalues);
1818  pfree(modnulls);
1819  pfree(modrepls);
1820 
1821  return rtup;
1822 }
1823 
1824 
1825 /*
1826  * There are three externally visible pieces to plperl: plperl_call_handler,
1827  * plperl_inline_handler, and plperl_validator.
1828  */
1829 
1830 /*
1831  * The call handler is called to run normal functions (including trigger
1832  * functions) that are defined in pg_proc.
1833  */
1835 
1836 Datum
1838 {
1839  Datum retval = (Datum) 0;
1840  plperl_call_data *volatile save_call_data = current_call_data;
1841  plperl_interp_desc *volatile oldinterp = plperl_active_interp;
1842  plperl_call_data this_call_data;
1843 
1844  /* Initialize current-call status record */
1845  MemSet(&this_call_data, 0, sizeof(this_call_data));
1846  this_call_data.fcinfo = fcinfo;
1847 
1848  PG_TRY();
1849  {
1850  current_call_data = &this_call_data;
1851  if (CALLED_AS_TRIGGER(fcinfo))
1852  retval = PointerGetDatum(plperl_trigger_handler(fcinfo));
1853  else if (CALLED_AS_EVENT_TRIGGER(fcinfo))
1854  {
1856  retval = (Datum) 0;
1857  }
1858  else
1859  retval = plperl_func_handler(fcinfo);
1860  }
1861  PG_FINALLY();
1862  {
1863  current_call_data = save_call_data;
1864  activate_interpreter(oldinterp);
1865  if (this_call_data.prodesc)
1866  decrement_prodesc_refcount(this_call_data.prodesc);
1867  }
1868  PG_END_TRY();
1869 
1870  return retval;
1871 }
1872 
1873 /*
1874  * The inline handler runs anonymous code blocks (DO blocks).
1875  */
1877 
1878 Datum
1880 {
1881  LOCAL_FCINFO(fake_fcinfo, 0);
1883  FmgrInfo flinfo;
1884  plperl_proc_desc desc;
1885  plperl_call_data *volatile save_call_data = current_call_data;
1886  plperl_interp_desc *volatile oldinterp = plperl_active_interp;
1887  plperl_call_data this_call_data;
1888  ErrorContextCallback pl_error_context;
1889 
1890  /* Initialize current-call status record */
1891  MemSet(&this_call_data, 0, sizeof(this_call_data));
1892 
1893  /* Set up a callback for error reporting */
1894  pl_error_context.callback = plperl_inline_callback;
1895  pl_error_context.previous = error_context_stack;
1896  pl_error_context.arg = NULL;
1897  error_context_stack = &pl_error_context;
1898 
1899  /*
1900  * Set up a fake fcinfo and descriptor with just enough info to satisfy
1901  * plperl_call_perl_func(). In particular note that this sets things up
1902  * with no arguments passed, and a result type of VOID.
1903  */
1904  MemSet(fake_fcinfo, 0, SizeForFunctionCallInfo(0));
1905  MemSet(&flinfo, 0, sizeof(flinfo));
1906  MemSet(&desc, 0, sizeof(desc));
1907  fake_fcinfo->flinfo = &flinfo;
1908  flinfo.fn_oid = InvalidOid;
1909  flinfo.fn_mcxt = CurrentMemoryContext;
1910 
1911  desc.proname = "inline_code_block";
1912  desc.fn_readonly = false;
1913 
1914  desc.lang_oid = codeblock->langOid;
1915  desc.trftypes = NIL;
1916  desc.lanpltrusted = codeblock->langIsTrusted;
1917 
1918  desc.fn_retistuple = false;
1919  desc.fn_retisset = false;
1920  desc.fn_retisarray = false;
1921  desc.result_oid = InvalidOid;
1922  desc.nargs = 0;
1923  desc.reference = NULL;
1924 
1925  this_call_data.fcinfo = fake_fcinfo;
1926  this_call_data.prodesc = &desc;
1927  /* we do not bother with refcounting the fake prodesc */
1928 
1929  PG_TRY();
1930  {
1931  SV *perlret;
1932 
1933  current_call_data = &this_call_data;
1934 
1935  if (SPI_connect_ext(codeblock->atomic ? 0 : SPI_OPT_NONATOMIC) != SPI_OK_CONNECT)
1936  elog(ERROR, "could not connect to SPI manager");
1937 
1939 
1940  plperl_create_sub(&desc, codeblock->source_text, 0);
1941 
1942  if (!desc.reference) /* can this happen? */
1943  elog(ERROR, "could not create internal procedure for anonymous code block");
1944 
1945  perlret = plperl_call_perl_func(&desc, fake_fcinfo);
1946 
1947  SvREFCNT_dec_current(perlret);
1948 
1949  if (SPI_finish() != SPI_OK_FINISH)
1950  elog(ERROR, "SPI_finish() failed");
1951  }
1952  PG_FINALLY();
1953  {
1954  if (desc.reference)
1956  current_call_data = save_call_data;
1957  activate_interpreter(oldinterp);
1958  }
1959  PG_END_TRY();
1960 
1961  error_context_stack = pl_error_context.previous;
1962 
1963  PG_RETURN_VOID();
1964 }
1965 
1966 /*
1967  * The validator is called during CREATE FUNCTION to validate the function
1968  * being created/replaced. The precise behavior of the validator may be
1969  * modified by the check_function_bodies GUC.
1970  */
1972 
1973 Datum
1975 {
1976  Oid funcoid = PG_GETARG_OID(0);
1977  HeapTuple tuple;
1978  Form_pg_proc proc;
1979  char functyptype;
1980  int numargs;
1981  Oid *argtypes;
1982  char **argnames;
1983  char *argmodes;
1984  bool is_trigger = false;
1985  bool is_event_trigger = false;
1986  int i;
1987 
1988  if (!CheckFunctionValidatorAccess(fcinfo->flinfo->fn_oid, funcoid))
1989  PG_RETURN_VOID();
1990 
1991  /* Get the new function's pg_proc entry */
1992  tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
1993  if (!HeapTupleIsValid(tuple))
1994  elog(ERROR, "cache lookup failed for function %u", funcoid);
1995  proc = (Form_pg_proc) GETSTRUCT(tuple);
1996 
1997  functyptype = get_typtype(proc->prorettype);
1998 
1999  /* Disallow pseudotype result */
2000  /* except for TRIGGER, EVTTRIGGER, RECORD, or VOID */
2001  if (functyptype == TYPTYPE_PSEUDO)
2002  {
2003  if (proc->prorettype == TRIGGEROID)
2004  is_trigger = true;
2005  else if (proc->prorettype == EVTTRIGGEROID)
2006  is_event_trigger = true;
2007  else if (proc->prorettype != RECORDOID &&
2008  proc->prorettype != VOIDOID)
2009  ereport(ERROR,
2010  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2011  errmsg("PL/Perl functions cannot return type %s",
2012  format_type_be(proc->prorettype))));
2013  }
2014 
2015  /* Disallow pseudotypes in arguments (either IN or OUT) */
2016  numargs = get_func_arg_info(tuple,
2017  &argtypes, &argnames, &argmodes);
2018  for (i = 0; i < numargs; i++)
2019  {
2020  if (get_typtype(argtypes[i]) == TYPTYPE_PSEUDO &&
2021  argtypes[i] != RECORDOID)
2022  ereport(ERROR,
2023  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2024  errmsg("PL/Perl functions cannot accept type %s",
2025  format_type_be(argtypes[i]))));
2026  }
2027 
2028  ReleaseSysCache(tuple);
2029 
2030  /* Postpone body checks if !check_function_bodies */
2032  {
2033  (void) compile_plperl_function(funcoid, is_trigger, is_event_trigger);
2034  }
2035 
2036  /* the result of a validator is ignored */
2037  PG_RETURN_VOID();
2038 }
2039 
2040 
2041 /*
2042  * plperlu likewise requires three externally visible functions:
2043  * plperlu_call_handler, plperlu_inline_handler, and plperlu_validator.
2044  * These are currently just aliases that send control to the plperl
2045  * handler functions, and we decide whether a particular function is
2046  * trusted or not by inspecting the actual pg_language tuple.
2047  */
2048 
2050 
2051 Datum
2053 {
2054  return plperl_call_handler(fcinfo);
2055 }
2056 
2058 
2059 Datum
2061 {
2062  return plperl_inline_handler(fcinfo);
2063 }
2064 
2066 
2067 Datum
2069 {
2070  /* call plperl validator with our fcinfo so it gets our oid */
2071  return plperl_validator(fcinfo);
2072 }
2073 
2074 
2075 /*
2076  * Uses mkfunc to create a subroutine whose text is
2077  * supplied in s, and returns a reference to it
2078  */
2079 static void
2080 plperl_create_sub(plperl_proc_desc *prodesc, const char *s, Oid fn_oid)
2081 {
2082  dTHX;
2083  dSP;
2084  char subname[NAMEDATALEN + 40];
2085  HV *pragma_hv = newHV();
2086  SV *subref = NULL;
2087  int count;
2088 
2089  sprintf(subname, "%s__%u", prodesc->proname, fn_oid);
2090 
2091  if (plperl_use_strict)
2092  hv_store_string(pragma_hv, "strict", (SV *) newAV());
2093 
2094  ENTER;
2095  SAVETMPS;
2096  PUSHMARK(SP);
2097  EXTEND(SP, 4);
2098  PUSHs(sv_2mortal(cstr2sv(subname)));
2099  PUSHs(sv_2mortal(newRV_noinc((SV *) pragma_hv)));
2100 
2101  /*
2102  * Use 'false' for $prolog in mkfunc, which is kept for compatibility in
2103  * case a module such as PostgreSQL::PLPerl::NYTprof replaces the function
2104  * compiler.
2105  */
2106  PUSHs(&PL_sv_no);
2107  PUSHs(sv_2mortal(cstr2sv(s)));
2108  PUTBACK;
2109 
2110  /*
2111  * G_KEEPERR seems to be needed here, else we don't recognize compile
2112  * errors properly. Perhaps it's because there's another level of eval
2113  * inside mksafefunc?
2114  */
2115  count = perl_call_pv("PostgreSQL::InServer::mkfunc",
2116  G_SCALAR | G_EVAL | G_KEEPERR);
2117  SPAGAIN;
2118 
2119  if (count == 1)
2120  {
2121  SV *sub_rv = (SV *) POPs;
2122 
2123  if (sub_rv && SvROK(sub_rv) && SvTYPE(SvRV(sub_rv)) == SVt_PVCV)
2124  {
2125  subref = newRV_inc(SvRV(sub_rv));
2126  }
2127  }
2128 
2129  PUTBACK;
2130  FREETMPS;
2131  LEAVE;
2132 
2133  if (SvTRUE(ERRSV))
2134  ereport(ERROR,
2135  (errcode(ERRCODE_SYNTAX_ERROR),
2137 
2138  if (!subref)
2139  ereport(ERROR,
2140  (errcode(ERRCODE_SYNTAX_ERROR),
2141  errmsg("didn't get a CODE reference from compiling function \"%s\"",
2142  prodesc->proname)));
2143 
2144  prodesc->reference = subref;
2145 }
2146 
2147 
2148 /**********************************************************************
2149  * plperl_init_shared_libs() -
2150  **********************************************************************/
2151 
2152 static void
2154 {
2155  char *file = __FILE__;
2156 
2157  newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
2158  newXS("PostgreSQL::InServer::Util::bootstrap",
2160  /* newXS for...::SPI::bootstrap is in select_perl_context() */
2161 }
2162 
2163 
2164 static SV *
2166 {
2167  dTHX;
2168  dSP;
2169  SV *retval;
2170  int i;
2171  int count;
2172  Oid *argtypes = NULL;
2173  int nargs = 0;
2174 
2175  ENTER;
2176  SAVETMPS;
2177 
2178  PUSHMARK(SP);
2179  EXTEND(sp, desc->nargs);
2180 
2181  /* Get signature for true functions; inline blocks have no args. */
2182  if (fcinfo->flinfo->fn_oid)
2183  get_func_signature(fcinfo->flinfo->fn_oid, &argtypes, &nargs);
2184  Assert(nargs == desc->nargs);
2185 
2186  for (i = 0; i < desc->nargs; i++)
2187  {
2188  if (fcinfo->args[i].isnull)
2189  PUSHs(&PL_sv_undef);
2190  else if (desc->arg_is_rowtype[i])
2191  {
2192  SV *sv = plperl_hash_from_datum(fcinfo->args[i].value);
2193 
2194  PUSHs(sv_2mortal(sv));
2195  }
2196  else
2197  {
2198  SV *sv;
2199  Oid funcid;
2200 
2201  if (OidIsValid(desc->arg_arraytype[i]))
2202  sv = plperl_ref_from_pg_array(fcinfo->args[i].value, desc->arg_arraytype[i]);
2203  else if ((funcid = get_transform_fromsql(argtypes[i], current_call_data->prodesc->lang_oid, current_call_data->prodesc->trftypes)))
2204  sv = (SV *) DatumGetPointer(OidFunctionCall1(funcid, fcinfo->args[i].value));
2205  else
2206  {
2207  char *tmp;
2208 
2209  tmp = OutputFunctionCall(&(desc->arg_out_func[i]),
2210  fcinfo->args[i].value);
2211  sv = cstr2sv(tmp);
2212  pfree(tmp);
2213  }
2214 
2215  PUSHs(sv_2mortal(sv));
2216  }
2217  }
2218  PUTBACK;
2219 
2220  /* Do NOT use G_KEEPERR here */
2221  count = perl_call_sv(desc->reference, G_SCALAR | G_EVAL);
2222 
2223  SPAGAIN;
2224 
2225  if (count != 1)
2226  {
2227  PUTBACK;
2228  FREETMPS;
2229  LEAVE;
2230  ereport(ERROR,
2231  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2232  errmsg("didn't get a return item from function")));
2233  }
2234 
2235  if (SvTRUE(ERRSV))
2236  {
2237  (void) POPs;
2238  PUTBACK;
2239  FREETMPS;
2240  LEAVE;
2241  /* XXX need to find a way to determine a better errcode here */
2242  ereport(ERROR,
2243  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2245  }
2246 
2247  retval = newSVsv(POPs);
2248 
2249  PUTBACK;
2250  FREETMPS;
2251  LEAVE;
2252 
2253  return retval;
2254 }
2255 
2256 
2257 static SV *
2259  SV *td)
2260 {
2261  dTHX;
2262  dSP;
2263  SV *retval,
2264  *TDsv;
2265  int i,
2266  count;
2267  Trigger *tg_trigger = ((TriggerData *) fcinfo->context)->tg_trigger;
2268 
2269  ENTER;
2270  SAVETMPS;
2271 
2272  TDsv = get_sv("main::_TD", 0);
2273  if (!TDsv)
2274  ereport(ERROR,
2275  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2276  errmsg("couldn't fetch $_TD")));
2277 
2278  save_item(TDsv); /* local $_TD */
2279  sv_setsv(TDsv, td);
2280 
2281  PUSHMARK(sp);
2282  EXTEND(sp, tg_trigger->tgnargs);
2283 
2284  for (i = 0; i < tg_trigger->tgnargs; i++)
2285  PUSHs(sv_2mortal(cstr2sv(tg_trigger->tgargs[i])));
2286  PUTBACK;
2287 
2288  /* Do NOT use G_KEEPERR here */
2289  count = perl_call_sv(desc->reference, G_SCALAR | G_EVAL);
2290 
2291  SPAGAIN;
2292 
2293  if (count != 1)
2294  {
2295  PUTBACK;
2296  FREETMPS;
2297  LEAVE;
2298  ereport(ERROR,
2299  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2300  errmsg("didn't get a return item from trigger function")));
2301  }
2302 
2303  if (SvTRUE(ERRSV))
2304  {
2305  (void) POPs;
2306  PUTBACK;
2307  FREETMPS;
2308  LEAVE;
2309  /* XXX need to find a way to determine a better errcode here */
2310  ereport(ERROR,
2311  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2313  }
2314 
2315  retval = newSVsv(POPs);
2316 
2317  PUTBACK;
2318  FREETMPS;
2319  LEAVE;
2320 
2321  return retval;
2322 }
2323 
2324 
2325 static void
2327  FunctionCallInfo fcinfo,
2328  SV *td)
2329 {
2330  dTHX;
2331  dSP;
2332  SV *retval,
2333  *TDsv;
2334  int count;
2335 
2336  ENTER;
2337  SAVETMPS;
2338 
2339  TDsv = get_sv("main::_TD", 0);
2340  if (!TDsv)
2341  ereport(ERROR,
2342  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2343  errmsg("couldn't fetch $_TD")));
2344 
2345  save_item(TDsv); /* local $_TD */
2346  sv_setsv(TDsv, td);
2347 
2348  PUSHMARK(sp);
2349  PUTBACK;
2350 
2351  /* Do NOT use G_KEEPERR here */
2352  count = perl_call_sv(desc->reference, G_SCALAR | G_EVAL);
2353 
2354  SPAGAIN;
2355 
2356  if (count != 1)
2357  {
2358  PUTBACK;
2359  FREETMPS;
2360  LEAVE;
2361  ereport(ERROR,
2362  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2363  errmsg("didn't get a return item from trigger function")));
2364  }
2365 
2366  if (SvTRUE(ERRSV))
2367  {
2368  (void) POPs;
2369  PUTBACK;
2370  FREETMPS;
2371  LEAVE;
2372  /* XXX need to find a way to determine a better errcode here */
2373  ereport(ERROR,
2374  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2376  }
2377 
2378  retval = newSVsv(POPs);
2379  (void) retval; /* silence compiler warning */
2380 
2381  PUTBACK;
2382  FREETMPS;
2383  LEAVE;
2384 }
2385 
2386 static Datum
2388 {
2389  bool nonatomic;
2390  plperl_proc_desc *prodesc;
2391  SV *perlret;
2392  Datum retval = 0;
2393  ReturnSetInfo *rsi;
2394  ErrorContextCallback pl_error_context;
2395 
2396  nonatomic = fcinfo->context &&
2397  IsA(fcinfo->context, CallContext) &&
2398  !castNode(CallContext, fcinfo->context)->atomic;
2399 
2400  if (SPI_connect_ext(nonatomic ? SPI_OPT_NONATOMIC : 0) != SPI_OK_CONNECT)
2401  elog(ERROR, "could not connect to SPI manager");
2402 
2403  prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, false, false);
2404  current_call_data->prodesc = prodesc;
2405  increment_prodesc_refcount(prodesc);
2406 
2407  /* Set a callback for error reporting */
2408  pl_error_context.callback = plperl_exec_callback;
2409  pl_error_context.previous = error_context_stack;
2410  pl_error_context.arg = prodesc->proname;
2411  error_context_stack = &pl_error_context;
2412 
2413  rsi = (ReturnSetInfo *) fcinfo->resultinfo;
2414 
2415  if (prodesc->fn_retisset)
2416  {
2417  /* Check context before allowing the call to go through */
2418  if (!rsi || !IsA(rsi, ReturnSetInfo) ||
2419  (rsi->allowedModes & SFRM_Materialize) == 0)
2420  ereport(ERROR,
2421  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2422  errmsg("set-valued function called in context that "
2423  "cannot accept a set")));
2424  }
2425 
2426  activate_interpreter(prodesc->interp);
2427 
2428  perlret = plperl_call_perl_func(prodesc, fcinfo);
2429 
2430  /************************************************************
2431  * Disconnect from SPI manager and then create the return
2432  * values datum (if the input function does a palloc for it
2433  * this must not be allocated in the SPI memory context
2434  * because SPI_finish would free it).
2435  ************************************************************/
2436  if (SPI_finish() != SPI_OK_FINISH)
2437  elog(ERROR, "SPI_finish() failed");
2438 
2439  if (prodesc->fn_retisset)
2440  {
2441  SV *sav;
2442 
2443  /*
2444  * If the Perl function returned an arrayref, we pretend that it
2445  * called return_next() for each element of the array, to handle old
2446  * SRFs that didn't know about return_next(). Any other sort of return
2447  * value is an error, except undef which means return an empty set.
2448  */
2449  sav = get_perl_array_ref(perlret);
2450  if (sav)
2451  {
2452  dTHX;
2453  int i = 0;
2454  SV **svp = 0;
2455  AV *rav = (AV *) SvRV(sav);
2456 
2457  while ((svp = av_fetch(rav, i, FALSE)) != NULL)
2458  {
2460  i++;
2461  }
2462  }
2463  else if (SvOK(perlret))
2464  {
2465  ereport(ERROR,
2466  (errcode(ERRCODE_DATATYPE_MISMATCH),
2467  errmsg("set-returning PL/Perl function must return "
2468  "reference to array or use return_next")));
2469  }
2470 
2472  if (current_call_data->tuple_store)
2473  {
2474  rsi->setResult = current_call_data->tuple_store;
2475  rsi->setDesc = current_call_data->ret_tdesc;
2476  }
2477  retval = (Datum) 0;
2478  }
2479  else if (prodesc->result_oid)
2480  {
2481  retval = plperl_sv_to_datum(perlret,
2482  prodesc->result_oid,
2483  -1,
2484  fcinfo,
2485  &prodesc->result_in_func,
2486  prodesc->result_typioparam,
2487  &fcinfo->isnull);
2488 
2489  if (fcinfo->isnull && rsi && IsA(rsi, ReturnSetInfo))
2490  rsi->isDone = ExprEndResult;
2491  }
2492 
2493  /* Restore the previous error callback */
2494  error_context_stack = pl_error_context.previous;
2495 
2496  SvREFCNT_dec_current(perlret);
2497 
2498  return retval;
2499 }
2500 
2501 
2502 static Datum
2504 {
2505  plperl_proc_desc *prodesc;
2506  SV *perlret;
2507  Datum retval;
2508  SV *svTD;
2509  HV *hvTD;
2510  ErrorContextCallback pl_error_context;
2511  TriggerData *tdata;
2512  int rc PG_USED_FOR_ASSERTS_ONLY;
2513 
2514  /* Connect to SPI manager */
2515  if (SPI_connect() != SPI_OK_CONNECT)
2516  elog(ERROR, "could not connect to SPI manager");
2517 
2518  /* Make transition tables visible to this SPI connection */
2519  tdata = (TriggerData *) fcinfo->context;
2520  rc = SPI_register_trigger_data(tdata);
2521  Assert(rc >= 0);
2522 
2523  /* Find or compile the function */
2524  prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, true, false);
2525  current_call_data->prodesc = prodesc;
2526  increment_prodesc_refcount(prodesc);
2527 
2528  /* Set a callback for error reporting */
2529  pl_error_context.callback = plperl_exec_callback;
2530  pl_error_context.previous = error_context_stack;
2531  pl_error_context.arg = prodesc->proname;
2532  error_context_stack = &pl_error_context;
2533 
2534  activate_interpreter(prodesc->interp);
2535 
2536  svTD = plperl_trigger_build_args(fcinfo);
2537  perlret = plperl_call_perl_trigger_func(prodesc, fcinfo, svTD);
2538  hvTD = (HV *) SvRV(svTD);
2539 
2540  /************************************************************
2541  * Disconnect from SPI manager and then create the return
2542  * values datum (if the input function does a palloc for it
2543  * this must not be allocated in the SPI memory context
2544  * because SPI_finish would free it).
2545  ************************************************************/
2546  if (SPI_finish() != SPI_OK_FINISH)
2547  elog(ERROR, "SPI_finish() failed");
2548 
2549  if (perlret == NULL || !SvOK(perlret))
2550  {
2551  /* undef result means go ahead with original tuple */
2552  TriggerData *trigdata = ((TriggerData *) fcinfo->context);
2553 
2554  if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
2555  retval = (Datum) trigdata->tg_trigtuple;
2556  else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
2557  retval = (Datum) trigdata->tg_newtuple;
2558  else if (TRIGGER_FIRED_BY_DELETE(trigdata->tg_event))
2559  retval = (Datum) trigdata->tg_trigtuple;
2560  else if (TRIGGER_FIRED_BY_TRUNCATE(trigdata->tg_event))
2561  retval = (Datum) trigdata->tg_trigtuple;
2562  else
2563  retval = (Datum) 0; /* can this happen? */
2564  }
2565  else
2566  {
2567  HeapTuple trv;
2568  char *tmp;
2569 
2570  tmp = sv2cstr(perlret);
2571 
2572  if (pg_strcasecmp(tmp, "SKIP") == 0)
2573  trv = NULL;
2574  else if (pg_strcasecmp(tmp, "MODIFY") == 0)
2575  {
2576  TriggerData *trigdata = (TriggerData *) fcinfo->context;
2577 
2578  if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
2579  trv = plperl_modify_tuple(hvTD, trigdata,
2580  trigdata->tg_trigtuple);
2581  else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
2582  trv = plperl_modify_tuple(hvTD, trigdata,
2583  trigdata->tg_newtuple);
2584  else
2585  {
2586  ereport(WARNING,
2587  (errcode(ERRCODE_E_R_I_E_TRIGGER_PROTOCOL_VIOLATED),
2588  errmsg("ignoring modified row in DELETE trigger")));
2589  trv = NULL;
2590  }
2591  }
2592  else
2593  {
2594  ereport(ERROR,
2595  (errcode(ERRCODE_E_R_I_E_TRIGGER_PROTOCOL_VIOLATED),
2596  errmsg("result of PL/Perl trigger function must be undef, "
2597  "\"SKIP\", or \"MODIFY\"")));
2598  trv = NULL;
2599  }
2600  retval = PointerGetDatum(trv);
2601  pfree(tmp);
2602  }
2603 
2604  /* Restore the previous error callback */
2605  error_context_stack = pl_error_context.previous;
2606 
2607  SvREFCNT_dec_current(svTD);
2608  if (perlret)
2609  SvREFCNT_dec_current(perlret);
2610 
2611  return retval;
2612 }
2613 
2614 
2615 static void
2617 {
2618  plperl_proc_desc *prodesc;
2619  SV *svTD;
2620  ErrorContextCallback pl_error_context;
2621 
2622  /* Connect to SPI manager */
2623  if (SPI_connect() != SPI_OK_CONNECT)
2624  elog(ERROR, "could not connect to SPI manager");
2625 
2626  /* Find or compile the function */
2627  prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, false, true);
2628  current_call_data->prodesc = prodesc;
2629  increment_prodesc_refcount(prodesc);
2630 
2631  /* Set a callback for error reporting */
2632  pl_error_context.callback = plperl_exec_callback;
2633  pl_error_context.previous = error_context_stack;
2634  pl_error_context.arg = prodesc->proname;
2635  error_context_stack = &pl_error_context;
2636 
2637  activate_interpreter(prodesc->interp);
2638 
2639  svTD = plperl_event_trigger_build_args(fcinfo);
2640  plperl_call_perl_event_trigger_func(prodesc, fcinfo, svTD);
2641 
2642  if (SPI_finish() != SPI_OK_FINISH)
2643  elog(ERROR, "SPI_finish() failed");
2644 
2645  /* Restore the previous error callback */
2646  error_context_stack = pl_error_context.previous;
2647 
2648  SvREFCNT_dec_current(svTD);
2649 }
2650 
2651 
2652 static bool
2654 {
2655  if (proc_ptr && proc_ptr->proc_ptr)
2656  {
2657  plperl_proc_desc *prodesc = proc_ptr->proc_ptr;
2658  bool uptodate;
2659 
2660  /************************************************************
2661  * If it's present, must check whether it's still up to date.
2662  * This is needed because CREATE OR REPLACE FUNCTION can modify the
2663  * function's pg_proc entry without changing its OID.
2664  ************************************************************/
2665  uptodate = (prodesc->fn_xmin == HeapTupleHeaderGetRawXmin(procTup->t_data) &&
2666  ItemPointerEquals(&prodesc->fn_tid, &procTup->t_self));
2667 
2668  if (uptodate)
2669  return true;
2670 
2671  /* Otherwise, unlink the obsoleted entry from the hashtable ... */
2672  proc_ptr->proc_ptr = NULL;
2673  /* ... and release the corresponding refcount, probably deleting it */
2674  decrement_prodesc_refcount(prodesc);
2675  }
2676 
2677  return false;
2678 }
2679 
2680 
2681 static void
2683 {
2684  Assert(prodesc->fn_refcount == 0);
2685  /* Release CODE reference, if we have one, from the appropriate interp */
2686  if (prodesc->reference)
2687  {
2689 
2690  activate_interpreter(prodesc->interp);
2691  SvREFCNT_dec_current(prodesc->reference);
2692  activate_interpreter(oldinterp);
2693  }
2694  /* Release all PG-owned data for this proc */
2695  MemoryContextDelete(prodesc->fn_cxt);
2696 }
2697 
2698 
2699 static plperl_proc_desc *
2700 compile_plperl_function(Oid fn_oid, bool is_trigger, bool is_event_trigger)
2701 {
2702  HeapTuple procTup;
2703  Form_pg_proc procStruct;
2704  plperl_proc_key proc_key;
2705  plperl_proc_ptr *proc_ptr;
2706  plperl_proc_desc *volatile prodesc = NULL;
2707  volatile MemoryContext proc_cxt = NULL;
2709  ErrorContextCallback plperl_error_context;
2710 
2711  /* We'll need the pg_proc tuple in any case... */
2712  procTup = SearchSysCache1(PROCOID, ObjectIdGetDatum(fn_oid));
2713  if (!HeapTupleIsValid(procTup))
2714  elog(ERROR, "cache lookup failed for function %u", fn_oid);
2715  procStruct = (Form_pg_proc) GETSTRUCT(procTup);
2716 
2717  /*
2718  * Try to find function in plperl_proc_hash. The reason for this
2719  * overcomplicated-seeming lookup procedure is that we don't know whether
2720  * it's plperl or plperlu, and don't want to spend a lookup in pg_language
2721  * to find out.
2722  */
2723  proc_key.proc_id = fn_oid;
2724  proc_key.is_trigger = is_trigger;
2725  proc_key.user_id = GetUserId();
2726  proc_ptr = hash_search(plperl_proc_hash, &proc_key,
2727  HASH_FIND, NULL);
2728  if (validate_plperl_function(proc_ptr, procTup))
2729  {
2730  /* Found valid plperl entry */
2731  ReleaseSysCache(procTup);
2732  return proc_ptr->proc_ptr;
2733  }
2734 
2735  /* If not found or obsolete, maybe it's plperlu */
2736  proc_key.user_id = InvalidOid;
2737  proc_ptr = hash_search(plperl_proc_hash, &proc_key,
2738  HASH_FIND, NULL);
2739  if (validate_plperl_function(proc_ptr, procTup))
2740  {
2741  /* Found valid plperlu entry */
2742  ReleaseSysCache(procTup);
2743  return proc_ptr->proc_ptr;
2744  }
2745 
2746  /************************************************************
2747  * If we haven't found it in the hashtable, we analyze
2748  * the function's arguments and return type and store
2749  * the in-/out-functions in the prodesc block,
2750  * then we load the procedure into the Perl interpreter,
2751  * and last we create a new hashtable entry for it.
2752  ************************************************************/
2753 
2754  /* Set a callback for reporting compilation errors */
2755  plperl_error_context.callback = plperl_compile_callback;
2756  plperl_error_context.previous = error_context_stack;
2757  plperl_error_context.arg = NameStr(procStruct->proname);
2758  error_context_stack = &plperl_error_context;
2759 
2760  PG_TRY();
2761  {
2762  HeapTuple langTup;
2763  HeapTuple typeTup;
2764  Form_pg_language langStruct;
2765  Form_pg_type typeStruct;
2766  Datum protrftypes_datum;
2767  Datum prosrcdatum;
2768  bool isnull;
2769  char *proc_source;
2770  MemoryContext oldcontext;
2771 
2772  /************************************************************
2773  * Allocate a context that will hold all PG data for the procedure.
2774  ************************************************************/
2776  "PL/Perl function",
2778 
2779  /************************************************************
2780  * Allocate and fill a new procedure description block.
2781  * struct prodesc and subsidiary data must all live in proc_cxt.
2782  ************************************************************/
2783  oldcontext = MemoryContextSwitchTo(proc_cxt);
2784  prodesc = (plperl_proc_desc *) palloc0(sizeof(plperl_proc_desc));
2785  prodesc->proname = pstrdup(NameStr(procStruct->proname));
2786  MemoryContextSetIdentifier(proc_cxt, prodesc->proname);
2787  prodesc->fn_cxt = proc_cxt;
2788  prodesc->fn_refcount = 0;
2789  prodesc->fn_xmin = HeapTupleHeaderGetRawXmin(procTup->t_data);
2790  prodesc->fn_tid = procTup->t_self;
2791  prodesc->nargs = procStruct->pronargs;
2792  prodesc->arg_out_func = (FmgrInfo *) palloc0(prodesc->nargs * sizeof(FmgrInfo));
2793  prodesc->arg_is_rowtype = (bool *) palloc0(prodesc->nargs * sizeof(bool));
2794  prodesc->arg_arraytype = (Oid *) palloc0(prodesc->nargs * sizeof(Oid));
2795  MemoryContextSwitchTo(oldcontext);
2796 
2797  /* Remember if function is STABLE/IMMUTABLE */
2798  prodesc->fn_readonly =
2799  (procStruct->provolatile != PROVOLATILE_VOLATILE);
2800 
2801  /* Fetch protrftypes */
2802  protrftypes_datum = SysCacheGetAttr(PROCOID, procTup,
2803  Anum_pg_proc_protrftypes, &isnull);
2804  MemoryContextSwitchTo(proc_cxt);
2805  prodesc->trftypes = isnull ? NIL : oid_array_to_list(protrftypes_datum);
2806  MemoryContextSwitchTo(oldcontext);
2807 
2808  /************************************************************
2809  * Lookup the pg_language tuple by Oid
2810  ************************************************************/
2811  langTup = SearchSysCache1(LANGOID,
2812  ObjectIdGetDatum(procStruct->prolang));
2813  if (!HeapTupleIsValid(langTup))
2814  elog(ERROR, "cache lookup failed for language %u",
2815  procStruct->prolang);
2816  langStruct = (Form_pg_language) GETSTRUCT(langTup);
2817  prodesc->lang_oid = langStruct->oid;
2818  prodesc->lanpltrusted = langStruct->lanpltrusted;
2819  ReleaseSysCache(langTup);
2820 
2821  /************************************************************
2822  * Get the required information for input conversion of the
2823  * return value.
2824  ************************************************************/
2825  if (!is_trigger && !is_event_trigger)
2826  {
2827  Oid rettype = procStruct->prorettype;
2828 
2829  typeTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(rettype));
2830  if (!HeapTupleIsValid(typeTup))
2831  elog(ERROR, "cache lookup failed for type %u", rettype);
2832  typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
2833 
2834  /* Disallow pseudotype result, except VOID or RECORD */
2835  if (typeStruct->typtype == TYPTYPE_PSEUDO)
2836  {
2837  if (rettype == VOIDOID ||
2838  rettype == RECORDOID)
2839  /* okay */ ;
2840  else if (rettype == TRIGGEROID ||
2841  rettype == EVTTRIGGEROID)
2842  ereport(ERROR,
2843  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2844  errmsg("trigger functions can only be called "
2845  "as triggers")));
2846  else
2847  ereport(ERROR,
2848  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2849  errmsg("PL/Perl functions cannot return type %s",
2850  format_type_be(rettype))));
2851  }
2852 
2853  prodesc->result_oid = rettype;
2854  prodesc->fn_retisset = procStruct->proretset;
2855  prodesc->fn_retistuple = type_is_rowtype(rettype);
2856 
2857  prodesc->fn_retisarray =
2858  (typeStruct->typlen == -1 && typeStruct->typelem);
2859 
2860  fmgr_info_cxt(typeStruct->typinput,
2861  &(prodesc->result_in_func),
2862  proc_cxt);
2863  prodesc->result_typioparam = getTypeIOParam(typeTup);
2864 
2865  ReleaseSysCache(typeTup);
2866  }
2867 
2868  /************************************************************
2869  * Get the required information for output conversion
2870  * of all procedure arguments
2871  ************************************************************/
2872  if (!is_trigger && !is_event_trigger)
2873  {
2874  int i;
2875 
2876  for (i = 0; i < prodesc->nargs; i++)
2877  {
2878  Oid argtype = procStruct->proargtypes.values[i];
2879 
2880  typeTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(argtype));
2881  if (!HeapTupleIsValid(typeTup))
2882  elog(ERROR, "cache lookup failed for type %u", argtype);
2883  typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
2884 
2885  /* Disallow pseudotype argument, except RECORD */
2886  if (typeStruct->typtype == TYPTYPE_PSEUDO &&
2887  argtype != RECORDOID)
2888  ereport(ERROR,
2889  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2890  errmsg("PL/Perl functions cannot accept type %s",
2891  format_type_be(argtype))));
2892 
2893  if (type_is_rowtype(argtype))
2894  prodesc->arg_is_rowtype[i] = true;
2895  else
2896  {
2897  prodesc->arg_is_rowtype[i] = false;
2898  fmgr_info_cxt(typeStruct->typoutput,
2899  &(prodesc->arg_out_func[i]),
2900  proc_cxt);
2901  }
2902 
2903  /* Identify array-type arguments */
2904  if (typeStruct->typelem != 0 && typeStruct->typlen == -1)
2905  prodesc->arg_arraytype[i] = argtype;
2906  else
2907  prodesc->arg_arraytype[i] = InvalidOid;
2908 
2909  ReleaseSysCache(typeTup);
2910  }
2911  }
2912 
2913  /************************************************************
2914  * create the text of the anonymous subroutine.
2915  * we do not use a named subroutine so that we can call directly
2916  * through the reference.
2917  ************************************************************/
2918  prosrcdatum = SysCacheGetAttr(PROCOID, procTup,
2919  Anum_pg_proc_prosrc, &isnull);
2920  if (isnull)
2921  elog(ERROR, "null prosrc");
2922  proc_source = TextDatumGetCString(prosrcdatum);
2923 
2924  /************************************************************
2925  * Create the procedure in the appropriate interpreter
2926  ************************************************************/
2927 
2929 
2930  prodesc->interp = plperl_active_interp;
2931 
2932  plperl_create_sub(prodesc, proc_source, fn_oid);
2933 
2934  activate_interpreter(oldinterp);
2935 
2936  pfree(proc_source);
2937 
2938  if (!prodesc->reference) /* can this happen? */
2939  elog(ERROR, "could not create PL/Perl internal procedure");
2940 
2941  /************************************************************
2942  * OK, link the procedure into the correct hashtable entry.
2943  * Note we assume that the hashtable entry either doesn't exist yet,
2944  * or we already cleared its proc_ptr during the validation attempts
2945  * above. So no need to decrement an old refcount here.
2946  ************************************************************/
2947  proc_key.user_id = prodesc->lanpltrusted ? GetUserId() : InvalidOid;
2948 
2949  proc_ptr = hash_search(plperl_proc_hash, &proc_key,
2950  HASH_ENTER, NULL);
2951  /* We assume these two steps can't throw an error: */
2952  proc_ptr->proc_ptr = prodesc;
2953  increment_prodesc_refcount(prodesc);
2954  }
2955  PG_CATCH();
2956  {
2957  /*
2958  * If we got as far as creating a reference, we should be able to use
2959  * free_plperl_function() to clean up. If not, then at most we have
2960  * some PG memory resources in proc_cxt, which we can just delete.
2961  */
2962  if (prodesc && prodesc->reference)
2963  free_plperl_function(prodesc);
2964  else if (proc_cxt)
2965  MemoryContextDelete(proc_cxt);
2966 
2967  /* Be sure to restore the previous interpreter, too, for luck */
2968  activate_interpreter(oldinterp);
2969 
2970  PG_RE_THROW();
2971  }
2972  PG_END_TRY();
2973 
2974  /* restore previous error callback */
2975  error_context_stack = plperl_error_context.previous;
2976 
2977  ReleaseSysCache(procTup);
2978 
2979  return prodesc;
2980 }
2981 
2982 /* Build a hash from a given composite/row datum */
2983 static SV *
2985 {
2986  HeapTupleHeader td;
2987  Oid tupType;
2988  int32 tupTypmod;
2989  TupleDesc tupdesc;
2990  HeapTupleData tmptup;
2991  SV *sv;
2992 
2993  td = DatumGetHeapTupleHeader(attr);
2994 
2995  /* Extract rowtype info and find a tupdesc */
2996  tupType = HeapTupleHeaderGetTypeId(td);
2997  tupTypmod = HeapTupleHeaderGetTypMod(td);
2998  tupdesc = lookup_rowtype_tupdesc(tupType, tupTypmod);
2999 
3000  /* Build a temporary HeapTuple control structure */
3001  tmptup.t_len = HeapTupleHeaderGetDatumLength(td);
3002  tmptup.t_data = td;
3003 
3004  sv = plperl_hash_from_tuple(&tmptup, tupdesc, true);
3005  ReleaseTupleDesc(tupdesc);
3006 
3007  return sv;
3008 }
3009 
3010 /* Build a hash from all attributes of a given tuple. */
3011 static SV *
3012 plperl_hash_from_tuple(HeapTuple tuple, TupleDesc tupdesc, bool include_generated)
3013 {
3014  dTHX;
3015  HV *hv;
3016  int i;
3017 
3018  /* since this function recurses, it could be driven to stack overflow */
3020 
3021  hv = newHV();
3022  hv_ksplit(hv, tupdesc->natts); /* pre-grow the hash */
3023 
3024  for (i = 0; i < tupdesc->natts; i++)
3025  {
3026  Datum attr;
3027  bool isnull,
3028  typisvarlena;
3029  char *attname;
3030  Oid typoutput;
3031  Form_pg_attribute att = TupleDescAttr(tupdesc, i);
3032 
3033  if (att->attisdropped)
3034  continue;
3035 
3036  if (att->attgenerated)
3037  {
3038  /* don't include unless requested */
3039  if (!include_generated)
3040  continue;
3041  }
3042 
3043  attname = NameStr(att->attname);
3044  attr = heap_getattr(tuple, i + 1, tupdesc, &isnull);
3045 
3046  if (isnull)
3047  {
3048  /*
3049  * Store (attname => undef) and move on. Note we can't use
3050  * &PL_sv_undef here; see "AVs, HVs and undefined values" in
3051  * perlguts for an explanation.
3052  */
3053  hv_store_string(hv, attname, newSV(0));
3054  continue;
3055  }
3056 
3057  if (type_is_rowtype(att->atttypid))
3058  {
3059  SV *sv = plperl_hash_from_datum(attr);
3060 
3061  hv_store_string(hv, attname, sv);
3062  }
3063  else
3064  {
3065  SV *sv;
3066  Oid funcid;
3067 
3068  if (OidIsValid(get_base_element_type(att->atttypid)))
3069  sv = plperl_ref_from_pg_array(attr, att->atttypid);
3070  else if ((funcid = get_transform_fromsql(att->atttypid, current_call_data->prodesc->lang_oid, current_call_data->prodesc->trftypes)))
3071  sv = (SV *) DatumGetPointer(OidFunctionCall1(funcid, attr));
3072  else
3073  {
3074  char *outputstr;
3075 
3076  /* XXX should have a way to cache these lookups */
3077  getTypeOutputInfo(att->atttypid, &typoutput, &typisvarlena);
3078 
3079  outputstr = OidOutputFunctionCall(typoutput, attr);
3080  sv = cstr2sv(outputstr);
3081  pfree(outputstr);
3082  }
3083 
3084  hv_store_string(hv, attname, sv);
3085  }
3086  }
3087  return newRV_noinc((SV *) hv);
3088 }
3089 
3090 
3091 static void
3093 {
3094  /* see comment in plperl_fini() */
3095  if (plperl_ending)
3096  {
3097  /* simple croak as we don't want to involve PostgreSQL code */
3098  croak("SPI functions can not be used in END blocks");
3099  }
3100 }
3101 
3102 
3103 HV *
3104 plperl_spi_exec(char *query, int limit)
3105 {
3106  HV *ret_hv;
3107 
3108  /*
3109  * Execute the query inside a sub-transaction, so we can cope with errors
3110  * sanely
3111  */
3112  MemoryContext oldcontext = CurrentMemoryContext;
3114 
3116 
3118  /* Want to run inside function's memory context */
3119  MemoryContextSwitchTo(oldcontext);
3120 
3121  PG_TRY();
3122  {
3123  int spi_rv;
3124 
3125  pg_verifymbstr(query, strlen(query), false);
3126 
3127  spi_rv = SPI_execute(query, current_call_data->prodesc->fn_readonly,
3128  limit);
3130  spi_rv);
3131 
3132  /* Commit the inner transaction, return to outer xact context */
3134  MemoryContextSwitchTo(oldcontext);
3135  CurrentResourceOwner = oldowner;
3136  }
3137  PG_CATCH();
3138  {
3139  ErrorData *edata;
3140 
3141  /* Save error info */
3142  MemoryContextSwitchTo(oldcontext);
3143  edata = CopyErrorData();
3144  FlushErrorState();
3145 
3146  /* Abort the inner transaction */
3148  MemoryContextSwitchTo(oldcontext);
3149  CurrentResourceOwner = oldowner;
3150 
3151  /* Punt the error to Perl */
3152  croak_cstr(edata->message);
3153 
3154  /* Can't get here, but keep compiler quiet */
3155  return NULL;
3156  }
3157  PG_END_TRY();
3158 
3159  return ret_hv;
3160 }
3161 
3162 
3163 static HV *
3165  int status)
3166 {
3167  dTHX;
3168  HV *result;
3169 
3171 
3172  result = newHV();
3173 
3174  hv_store_string(result, "status",
3175  cstr2sv(SPI_result_code_string(status)));
3176  hv_store_string(result, "processed",
3177  (processed > (uint64) UV_MAX) ?
3178  newSVnv((NV) processed) :
3179  newSVuv((UV) processed));
3180 
3181  if (status > 0 && tuptable)
3182  {
3183  AV *rows;
3184  SV *row;
3185  uint64 i;
3186 
3187  /* Prevent overflow in call to av_extend() */
3188  if (processed > (uint64) AV_SIZE_MAX)
3189  ereport(ERROR,
3190  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
3191  errmsg("query result has too many rows to fit in a Perl array")));
3192 
3193  rows = newAV();
3194  av_extend(rows, processed);
3195  for (i = 0; i < processed; i++)
3196  {
3197  row = plperl_hash_from_tuple(tuptable->vals[i], tuptable->tupdesc, true);
3198  av_push(rows, row);
3199  }
3200  hv_store_string(result, "rows",
3201  newRV_noinc((SV *) rows));
3202  }
3203 
3204  SPI_freetuptable(tuptable);
3205 
3206  return result;
3207 }
3208 
3209 
3210 /*
3211  * plperl_return_next catches any error and converts it to a Perl error.
3212  * We assume (perhaps without adequate justification) that we need not abort
3213  * the current transaction if the Perl code traps the error.
3214  */
3215 void
3217 {
3218  MemoryContext oldcontext = CurrentMemoryContext;
3219 
3220  PG_TRY();
3221  {
3223  }
3224  PG_CATCH();
3225  {
3226  ErrorData *edata;
3227 
3228  /* Must reset elog.c's state */
3229  MemoryContextSwitchTo(oldcontext);
3230  edata = CopyErrorData();
3231  FlushErrorState();
3232 
3233  /* Punt the error to Perl */
3234  croak_cstr(edata->message);
3235  }
3236  PG_END_TRY();
3237 }
3238 
3239 /*
3240  * plperl_return_next_internal reports any errors in Postgres fashion
3241  * (via ereport).
3242  */
3243 static void
3245 {
3246  plperl_proc_desc *prodesc;
3247  FunctionCallInfo fcinfo;
3248  ReturnSetInfo *rsi;
3249  MemoryContext old_cxt;
3250 
3251  if (!sv)
3252  return;
3253 
3254  prodesc = current_call_data->prodesc;
3255  fcinfo = current_call_data->fcinfo;
3256  rsi = (ReturnSetInfo *) fcinfo->resultinfo;
3257 
3258  if (!prodesc->fn_retisset)
3259  ereport(ERROR,
3260  (errcode(ERRCODE_SYNTAX_ERROR),
3261  errmsg("cannot use return_next in a non-SETOF function")));
3262 
3263  if (!current_call_data->ret_tdesc)
3264  {
3265  TupleDesc tupdesc;
3266 
3267  Assert(!current_call_data->tuple_store);
3268 
3269  /*
3270  * This is the first call to return_next in the current PL/Perl
3271  * function call, so identify the output tuple type and create a
3272  * tuplestore to hold the result rows.
3273  */
3274  if (prodesc->fn_retistuple)
3275  {
3276  TypeFuncClass funcclass;
3277  Oid typid;
3278 
3279  funcclass = get_call_result_type(fcinfo, &typid, &tupdesc);
3280  if (funcclass != TYPEFUNC_COMPOSITE &&
3281  funcclass != TYPEFUNC_COMPOSITE_DOMAIN)
3282  ereport(ERROR,
3283  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
3284  errmsg("function returning record called in context "
3285  "that cannot accept type record")));
3286  /* if domain-over-composite, remember the domain's type OID */
3287  if (funcclass == TYPEFUNC_COMPOSITE_DOMAIN)
3288  current_call_data->cdomain_oid = typid;
3289  }
3290  else
3291  {
3292  tupdesc = rsi->expectedDesc;
3293  /* Protect assumption below that we return exactly one column */
3294  if (tupdesc == NULL || tupdesc->natts != 1)
3295  elog(ERROR, "expected single-column result descriptor for non-composite SETOF result");
3296  }
3297 
3298  /*
3299  * Make sure the tuple_store and ret_tdesc are sufficiently
3300  * long-lived.
3301  */
3303 
3304  current_call_data->ret_tdesc = CreateTupleDescCopy(tupdesc);
3305  current_call_data->tuple_store =
3307  false, work_mem);
3308 
3309  MemoryContextSwitchTo(old_cxt);
3310  }
3311 
3312  /*
3313  * Producing the tuple we want to return requires making plenty of
3314  * palloc() allocations that are not cleaned up. Since this function can
3315  * be called many times before the current memory context is reset, we
3316  * need to do those allocations in a temporary context.
3317  */
3318  if (!current_call_data->tmp_cxt)
3319  {
3320  current_call_data->tmp_cxt =
3322  "PL/Perl return_next temporary cxt",
3324  }
3325 
3326  old_cxt = MemoryContextSwitchTo(current_call_data->tmp_cxt);
3327 
3328  if (prodesc->fn_retistuple)
3329  {
3330  HeapTuple tuple;
3331 
3332  if (!(SvOK(sv) && SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVHV))
3333  ereport(ERROR,
3334  (errcode(ERRCODE_DATATYPE_MISMATCH),
3335  errmsg("SETOF-composite-returning PL/Perl function "
3336  "must call return_next with reference to hash")));
3337 
3338  tuple = plperl_build_tuple_result((HV *) SvRV(sv),
3339  current_call_data->ret_tdesc);
3340 
3341  if (OidIsValid(current_call_data->cdomain_oid))
3342  domain_check(HeapTupleGetDatum(tuple), false,
3343  current_call_data->cdomain_oid,
3344  &current_call_data->cdomain_info,
3346 
3347  tuplestore_puttuple(current_call_data->tuple_store, tuple);
3348  }
3349  else if (prodesc->result_oid)
3350  {
3351  Datum ret[1];
3352  bool isNull[1];
3353 
3354  ret[0] = plperl_sv_to_datum(sv,
3355  prodesc->result_oid,
3356  -1,
3357  fcinfo,
3358  &prodesc->result_in_func,
3359  prodesc->result_typioparam,
3360  &isNull[0]);
3361 
3362  tuplestore_putvalues(current_call_data->tuple_store,
3363  current_call_data->ret_tdesc,
3364  ret, isNull);
3365  }
3366 
3367  MemoryContextSwitchTo(old_cxt);
3368  MemoryContextReset(current_call_data->tmp_cxt);
3369 }
3370 
3371 
3372 SV *
3373 plperl_spi_query(char *query)
3374 {
3375  SV *cursor;
3376 
3377  /*
3378  * Execute the query inside a sub-transaction, so we can cope with errors
3379  * sanely
3380  */
3381  MemoryContext oldcontext = CurrentMemoryContext;
3383 
3385 
3387  /* Want to run inside function's memory context */
3388  MemoryContextSwitchTo(oldcontext);
3389 
3390  PG_TRY();
3391  {
3392  SPIPlanPtr plan;
3393  Portal portal;
3394 
3395  /* Make sure the query is validly encoded */
3396  pg_verifymbstr(query, strlen(query), false);
3397 
3398  /* Create a cursor for the query */
3399  plan = SPI_prepare(query, 0, NULL);
3400  if (plan == NULL)
3401  elog(ERROR, "SPI_prepare() failed:%s",
3403 
3404  portal = SPI_cursor_open(NULL, plan, NULL, NULL, false);
3405  SPI_freeplan(plan);
3406  if (portal == NULL)
3407  elog(ERROR, "SPI_cursor_open() failed:%s",
3409  cursor = cstr2sv(portal->name);
3410 
3411  PinPortal(portal);
3412 
3413  /* Commit the inner transaction, return to outer xact context */
3415  MemoryContextSwitchTo(oldcontext);
3416  CurrentResourceOwner = oldowner;
3417  }
3418  PG_CATCH();
3419  {
3420  ErrorData *edata;
3421 
3422  /* Save error info */
3423  MemoryContextSwitchTo(oldcontext);
3424  edata = CopyErrorData();
3425  FlushErrorState();
3426 
3427  /* Abort the inner transaction */
3429  MemoryContextSwitchTo(oldcontext);
3430  CurrentResourceOwner = oldowner;
3431 
3432  /* Punt the error to Perl */
3433  croak_cstr(edata->message);
3434 
3435  /* Can't get here, but keep compiler quiet */
3436  return NULL;
3437  }
3438  PG_END_TRY();
3439 
3440  return cursor;
3441 }
3442 
3443 
3444 SV *
3446 {
3447  SV *row;
3448 
3449  /*
3450  * Execute the FETCH inside a sub-transaction, so we can cope with errors
3451  * sanely
3452  */
3453  MemoryContext oldcontext = CurrentMemoryContext;
3455 
3457 
3459  /* Want to run inside function's memory context */
3460  MemoryContextSwitchTo(oldcontext);
3461 
3462  PG_TRY();
3463  {
3464  dTHX;
3465  Portal p = SPI_cursor_find(cursor);
3466 
3467  if (!p)
3468  {
3469  row = &PL_sv_undef;
3470  }
3471  else
3472  {
3473  SPI_cursor_fetch(p, true, 1);
3474  if (SPI_processed == 0)
3475  {
3476  UnpinPortal(p);
3477  SPI_cursor_close(p);
3478  row = &PL_sv_undef;
3479  }
3480  else
3481  {
3484  true);
3485  }
3487  }
3488 
3489  /* Commit the inner transaction, return to outer xact context */
3491  MemoryContextSwitchTo(oldcontext);
3492  CurrentResourceOwner = oldowner;
3493  }
3494  PG_CATCH();
3495  {
3496  ErrorData *edata;
3497 
3498  /* Save error info */
3499  MemoryContextSwitchTo(oldcontext);
3500  edata = CopyErrorData();
3501  FlushErrorState();
3502 
3503  /* Abort the inner transaction */
3505  MemoryContextSwitchTo(oldcontext);
3506  CurrentResourceOwner = oldowner;
3507 
3508  /* Punt the error to Perl */
3509  croak_cstr(edata->message);
3510 
3511  /* Can't get here, but keep compiler quiet */
3512  return NULL;
3513  }
3514  PG_END_TRY();
3515 
3516  return row;
3517 }
3518 
3519 void
3521 {
3522  Portal p;
3523 
3525 
3526  p = SPI_cursor_find(cursor);
3527 
3528  if (p)
3529  {
3530  UnpinPortal(p);
3531  SPI_cursor_close(p);
3532  }
3533 }
3534 
3535 SV *
3536 plperl_spi_prepare(char *query, int argc, SV **argv)
3537 {
3538  volatile SPIPlanPtr plan = NULL;
3539  volatile MemoryContext plan_cxt = NULL;
3540  plperl_query_desc *volatile qdesc = NULL;
3541  plperl_query_entry *volatile hash_entry = NULL;
3542  MemoryContext oldcontext = CurrentMemoryContext;
3544  MemoryContext work_cxt;
3545  bool found;
3546  int i;
3547 
3549 
3551  MemoryContextSwitchTo(oldcontext);
3552 
3553  PG_TRY();
3554  {
3556 
3557  /************************************************************
3558  * Allocate the new querydesc structure
3559  *
3560  * The qdesc struct, as well as all its subsidiary data, lives in its
3561  * plan_cxt. But note that the SPIPlan does not.
3562  ************************************************************/
3564  "PL/Perl spi_prepare query",
3566  MemoryContextSwitchTo(plan_cxt);
3567  qdesc = (plperl_query_desc *) palloc0(sizeof(plperl_query_desc));
3568  snprintf(qdesc->qname, sizeof(qdesc->qname), "%p", qdesc);
3569  qdesc->plan_cxt = plan_cxt;
3570  qdesc->nargs = argc;
3571  qdesc->argtypes = (Oid *) palloc(argc * sizeof(Oid));
3572  qdesc->arginfuncs = (FmgrInfo *) palloc(argc * sizeof(FmgrInfo));
3573  qdesc->argtypioparams = (Oid *) palloc(argc * sizeof(Oid));
3574  MemoryContextSwitchTo(oldcontext);
3575 
3576  /************************************************************
3577  * Do the following work in a short-lived context so that we don't
3578  * leak a lot of memory in the PL/Perl function's SPI Proc context.
3579  ************************************************************/
3581  "PL/Perl spi_prepare workspace",
3583  MemoryContextSwitchTo(work_cxt);
3584 
3585  /************************************************************
3586  * Resolve argument type names and then look them up by oid
3587  * in the system cache, and remember the required information
3588  * for input conversion.
3589  ************************************************************/
3590  for (i = 0; i < argc; i++)
3591  {
3592  Oid typId,
3593  typInput,
3594  typIOParam;
3595  int32 typmod;
3596  char *typstr;
3597 
3598  typstr = sv2cstr(argv[i]);
3599  parseTypeString(typstr, &typId, &typmod, false);
3600  pfree(typstr);
3601 
3602  getTypeInputInfo(typId, &typInput, &typIOParam);
3603 
3604  qdesc->argtypes[i] = typId;
3605  fmgr_info_cxt(typInput, &(qdesc->arginfuncs[i]), plan_cxt);
3606  qdesc->argtypioparams[i] = typIOParam;
3607  }
3608 
3609  /* Make sure the query is validly encoded */
3610  pg_verifymbstr(query, strlen(query), false);
3611 
3612  /************************************************************
3613  * Prepare the plan and check for errors
3614  ************************************************************/
3615  plan = SPI_prepare(query, argc, qdesc->argtypes);
3616 
3617  if (plan == NULL)
3618  elog(ERROR, "SPI_prepare() failed:%s",
3620 
3621  /************************************************************
3622  * Save the plan into permanent memory (right now it's in the
3623  * SPI procCxt, which will go away at function end).
3624  ************************************************************/
3625  if (SPI_keepplan(plan))
3626  elog(ERROR, "SPI_keepplan() failed");
3627  qdesc->plan = plan;
3628 
3629  /************************************************************
3630  * Insert a hashtable entry for the plan.
3631  ************************************************************/
3632  hash_entry = hash_search(plperl_active_interp->query_hash,
3633  qdesc->qname,
3634  HASH_ENTER, &found);
3635  hash_entry->query_data = qdesc;
3636 
3637  /* Get rid of workspace */
3638  MemoryContextDelete(work_cxt);
3639 
3640  /* Commit the inner transaction, return to outer xact context */
3642  MemoryContextSwitchTo(oldcontext);
3643  CurrentResourceOwner = oldowner;
3644  }
3645  PG_CATCH();
3646  {
3647  ErrorData *edata;
3648 
3649  /* Save error info */
3650  MemoryContextSwitchTo(oldcontext);
3651  edata = CopyErrorData();
3652  FlushErrorState();
3653 
3654  /* Drop anything we managed to allocate */
3655  if (hash_entry)
3656  hash_search(plperl_active_interp->query_hash,
3657  qdesc->qname,
3658  HASH_REMOVE, NULL);
3659  if (plan_cxt)
3660  MemoryContextDelete(plan_cxt);
3661  if (plan)
3662  SPI_freeplan(plan);
3663 
3664  /* Abort the inner transaction */
3666  MemoryContextSwitchTo(oldcontext);
3667  CurrentResourceOwner = oldowner;
3668 
3669  /* Punt the error to Perl */
3670  croak_cstr(edata->message);
3671 
3672  /* Can't get here, but keep compiler quiet */
3673  return NULL;
3674  }
3675  PG_END_TRY();
3676 
3677  /************************************************************
3678  * Return the query's hash key to the caller.
3679  ************************************************************/
3680  return cstr2sv(qdesc->qname);
3681 }
3682 
3683 HV *
3684 plperl_spi_exec_prepared(char *query, HV *attr, int argc, SV **argv)
3685 {
3686  HV *ret_hv;
3687  SV **sv;
3688  int i,
3689  limit,
3690  spi_rv;
3691  char *nulls;
3692  Datum *argvalues;
3693  plperl_query_desc *qdesc;
3694  plperl_query_entry *hash_entry;
3695 
3696  /*
3697  * Execute the query inside a sub-transaction, so we can cope with errors
3698  * sanely
3699  */
3700  MemoryContext oldcontext = CurrentMemoryContext;
3702 
3704 
3706  /* Want to run inside function's memory context */
3707  MemoryContextSwitchTo(oldcontext);
3708 
3709  PG_TRY();
3710  {
3711  dTHX;
3712 
3713  /************************************************************
3714  * Fetch the saved plan descriptor, see if it's o.k.
3715  ************************************************************/
3716  hash_entry = hash_search(plperl_active_interp->query_hash, query,
3717  HASH_FIND, NULL);
3718  if (hash_entry == NULL)
3719  elog(ERROR, "spi_exec_prepared: Invalid prepared query passed");
3720 
3721  qdesc = hash_entry->query_data;
3722  if (qdesc == NULL)
3723  elog(ERROR, "spi_exec_prepared: plperl query_hash value vanished");
3724 
3725  if (qdesc->nargs != argc)
3726  elog(ERROR, "spi_exec_prepared: expected %d argument(s), %d passed",
3727  qdesc->nargs, argc);
3728 
3729  /************************************************************
3730  * Parse eventual attributes
3731  ************************************************************/
3732  limit = 0;
3733  if (attr != NULL)
3734  {
3735  sv = hv_fetch_string(attr, "limit");
3736  if (sv && *sv && SvIOK(*sv))
3737  limit = SvIV(*sv);
3738  }
3739  /************************************************************
3740  * Set up arguments
3741  ************************************************************/
3742  if (argc > 0)
3743  {
3744  nulls = (char *) palloc(argc);
3745  argvalues = (Datum *) palloc(argc * sizeof(Datum));
3746  }
3747  else
3748  {
3749  nulls = NULL;
3750  argvalues = NULL;
3751  }
3752 
3753  for (i = 0; i < argc; i++)
3754  {
3755  bool isnull;
3756 
3757  argvalues[i] = plperl_sv_to_datum(argv[i],
3758  qdesc->argtypes[i],
3759  -1,
3760  NULL,
3761  &qdesc->arginfuncs[i],
3762  qdesc->argtypioparams[i],
3763  &isnull);
3764  nulls[i] = isnull ? 'n' : ' ';
3765  }
3766 
3767  /************************************************************
3768  * go
3769  ************************************************************/
3770  spi_rv = SPI_execute_plan(qdesc->plan, argvalues, nulls,
3771  current_call_data->prodesc->fn_readonly, limit);
3773  spi_rv);
3774  if (argc > 0)
3775  {
3776  pfree(argvalues);
3777  pfree(nulls);
3778  }
3779 
3780  /* Commit the inner transaction, return to outer xact context */
3782  MemoryContextSwitchTo(oldcontext);
3783  CurrentResourceOwner = oldowner;
3784  }
3785  PG_CATCH();
3786  {
3787  ErrorData *edata;
3788 
3789  /* Save error info */
3790  MemoryContextSwitchTo(oldcontext);
3791  edata = CopyErrorData();
3792  FlushErrorState();
3793 
3794  /* Abort the inner transaction */
3796  MemoryContextSwitchTo(oldcontext);
3797  CurrentResourceOwner = oldowner;
3798 
3799  /* Punt the error to Perl */
3800  croak_cstr(edata->message);
3801 
3802  /* Can't get here, but keep compiler quiet */
3803  return NULL;
3804  }
3805  PG_END_TRY();
3806 
3807  return ret_hv;
3808 }
3809 
3810 SV *
3811 plperl_spi_query_prepared(char *query, int argc, SV **argv)
3812 {
3813  int i;
3814  char *nulls;
3815  Datum *argvalues;
3816  plperl_query_desc *qdesc;
3817  plperl_query_entry *hash_entry;
3818  SV *cursor;
3819  Portal portal = NULL;
3820 
3821  /*
3822  * Execute the query inside a sub-transaction, so we can cope with errors
3823  * sanely
3824  */
3825  MemoryContext oldcontext = CurrentMemoryContext;
3827 
3829 
3831  /* Want to run inside function's memory context */
3832  MemoryContextSwitchTo(oldcontext);
3833 
3834  PG_TRY();
3835  {
3836  /************************************************************
3837  * Fetch the saved plan descriptor, see if it's o.k.
3838  ************************************************************/
3839  hash_entry = hash_search(plperl_active_interp->query_hash, query,
3840  HASH_FIND, NULL);
3841  if (hash_entry == NULL)
3842  elog(ERROR, "spi_query_prepared: Invalid prepared query passed");
3843 
3844  qdesc = hash_entry->query_data;
3845  if (qdesc == NULL)
3846  elog(ERROR, "spi_query_prepared: plperl query_hash value vanished");
3847 
3848  if (qdesc->nargs != argc)
3849  elog(ERROR, "spi_query_prepared: expected %d argument(s), %d passed",
3850  qdesc->nargs, argc);
3851 
3852  /************************************************************
3853  * Set up arguments
3854  ************************************************************/
3855  if (argc > 0)
3856  {
3857  nulls = (char *) palloc(argc);
3858  argvalues = (Datum *) palloc(argc * sizeof(Datum));
3859  }
3860  else
3861  {
3862  nulls = NULL;
3863  argvalues = NULL;
3864  }
3865 
3866  for (i = 0; i < argc; i++)
3867  {
3868  bool isnull;
3869 
3870  argvalues[i] = plperl_sv_to_datum(argv[i],
3871  qdesc->argtypes[i],
3872  -1,
3873  NULL,
3874  &qdesc->arginfuncs[i],
3875  qdesc->argtypioparams[i],
3876  &isnull);
3877  nulls[i] = isnull ? 'n' : ' ';
3878  }
3879 
3880  /************************************************************
3881  * go
3882  ************************************************************/
3883  portal = SPI_cursor_open(NULL, qdesc->plan, argvalues, nulls,
3884  current_call_data->prodesc->fn_readonly);
3885  if (argc > 0)
3886  {
3887  pfree(argvalues);
3888  pfree(nulls);
3889  }
3890  if (portal == NULL)
3891  elog(ERROR, "SPI_cursor_open() failed:%s",
3893 
3894  cursor = cstr2sv(portal->name);
3895 
3896  PinPortal(portal);
3897 
3898  /* Commit the inner transaction, return to outer xact context */
3900  MemoryContextSwitchTo(oldcontext);
3901  CurrentResourceOwner = oldowner;
3902  }
3903  PG_CATCH();
3904  {
3905  ErrorData *edata;
3906 
3907  /* Save error info */
3908  MemoryContextSwitchTo(oldcontext);
3909  edata = CopyErrorData();
3910  FlushErrorState();
3911 
3912  /* Abort the inner transaction */
3914  MemoryContextSwitchTo(oldcontext);
3915  CurrentResourceOwner = oldowner;
3916 
3917  /* Punt the error to Perl */
3918  croak_cstr(edata->message);
3919 
3920  /* Can't get here, but keep compiler quiet */
3921  return NULL;
3922  }
3923  PG_END_TRY();
3924 
3925  return cursor;
3926 }
3927 
3928 void
3930 {
3931  SPIPlanPtr plan;
3932  plperl_query_desc *qdesc;
3933  plperl_query_entry *hash_entry;
3934 
3936 
3937  hash_entry = hash_search(plperl_active_interp->query_hash, query,
3938  HASH_FIND, NULL);
3939  if (hash_entry == NULL)
3940  elog(ERROR, "spi_freeplan: Invalid prepared query passed");
3941 
3942  qdesc = hash_entry->query_data;
3943  if (qdesc == NULL)
3944  elog(ERROR, "spi_freeplan: plperl query_hash value vanished");
3945  plan = qdesc->plan;
3946 
3947  /*
3948  * free all memory before SPI_freeplan, so if it dies, nothing will be
3949  * left over
3950  */
3951  hash_search(plperl_active_interp->query_hash, query,
3952  HASH_REMOVE, NULL);
3953 
3954  MemoryContextDelete(qdesc->plan_cxt);
3955 
3956  SPI_freeplan(plan);
3957 }
3958 
3959 void
3961 {
3962  MemoryContext oldcontext = CurrentMemoryContext;
3963 
3964  PG_TRY();
3965  {
3966  SPI_commit();
3968  }
3969  PG_CATCH();
3970  {
3971  ErrorData *edata;
3972 
3973  /* Save error info */
3974  MemoryContextSwitchTo(oldcontext);
3975  edata = CopyErrorData();
3976  FlushErrorState();
3977 
3978  /* Punt the error to Perl */
3979  croak_cstr(edata->message);
3980  }
3981  PG_END_TRY();
3982 }
3983 
3984 void
3986 {
3987  MemoryContext oldcontext = CurrentMemoryContext;
3988 
3989  PG_TRY();
3990  {
3991  SPI_rollback();
3993  }
3994  PG_CATCH();
3995  {
3996  ErrorData *edata;
3997 
3998  /* Save error info */
3999  MemoryContextSwitchTo(oldcontext);
4000  edata = CopyErrorData();
4001  FlushErrorState();
4002 
4003  /* Punt the error to Perl */
4004  croak_cstr(edata->message);
4005  }
4006  PG_END_TRY();
4007 }
4008 
4009 /*
4010  * Implementation of plperl's elog() function
4011  *
4012  * If the error level is less than ERROR, we'll just emit the message and
4013  * return. When it is ERROR, elog() will longjmp, which we catch and
4014  * turn into a Perl croak(). Note we are assuming that elog() can't have
4015  * any internal failures that are so bad as to require a transaction abort.
4016  *
4017  * The main reason this is out-of-line is to avoid conflicts between XSUB.h
4018  * and the PG_TRY macros.
4019  */
4020 void
4021 plperl_util_elog(int level, SV *msg)
4022 {
4023  MemoryContext oldcontext = CurrentMemoryContext;
4024  char *volatile cmsg = NULL;
4025 
4026  PG_TRY();
4027  {
4028  cmsg = sv2cstr(msg);
4029  elog(level, "%s", cmsg);
4030  pfree(cmsg);
4031  }
4032  PG_CATCH();
4033  {
4034  ErrorData *edata;
4035 
4036  /* Must reset elog.c's state */
4037  MemoryContextSwitchTo(oldcontext);
4038  edata = CopyErrorData();
4039  FlushErrorState();
4040 
4041  if (cmsg)
4042  pfree(cmsg);
4043 
4044  /* Punt the error to Perl */
4045  croak_cstr(edata->message);
4046  }
4047  PG_END_TRY();
4048 }
4049 
4050 /*
4051  * Store an SV into a hash table under a key that is a string assumed to be
4052  * in the current database's encoding.
4053  */
4054 static SV **
4055 hv_store_string(HV *hv, const char *key, SV *val)
4056 {
4057  dTHX;
4058  int32 hlen;
4059  char *hkey;
4060  SV **ret;
4061 
4062  hkey = pg_server_to_any(key, strlen(key), PG_UTF8);
4063 
4064  /*
4065  * hv_store() recognizes a negative klen parameter as meaning a UTF-8
4066  * encoded key.
4067  */
4068  hlen = -(int) strlen(hkey);
4069  ret = hv_store(hv, hkey, hlen, val, 0);
4070 
4071  if (hkey != key)
4072  pfree(hkey);
4073 
4074  return ret;
4075 }
4076 
4077 /*
4078  * Fetch an SV from a hash table under a key that is a string assumed to be
4079  * in the current database's encoding.
4080  */
4081 static SV **
4082 hv_fetch_string(HV *hv, const char *key)
4083 {
4084  dTHX;
4085  int32 hlen;
4086  char *hkey;
4087  SV **ret;
4088 
4089  hkey = pg_server_to_any(key, strlen(key), PG_UTF8);
4090 
4091  /* See notes in hv_store_string */
4092  hlen = -(int) strlen(hkey);
4093  ret = hv_fetch(hv, hkey, hlen, 0);
4094 
4095  if (hkey != key)
4096  pfree(hkey);
4097 
4098  return ret;
4099 }
4100 
4101 /*
4102  * Provide function name for PL/Perl execution errors
4103  */
4104 static void
4106 {
4107  char *procname = (char *) arg;
4108 
4109  if (procname)
4110  errcontext("PL/Perl function \"%s\"", procname);
4111 }
4112 
4113 /*
4114  * Provide function name for PL/Perl compilation errors
4115  */
4116 static void
4118 {
4119  char *procname = (char *) arg;
4120 
4121  if (procname)
4122  errcontext("compilation of PL/Perl function \"%s\"", procname);
4123 }
4124 
4125 /*
4126  * Provide error context for the inline handler
4127  */
4128 static void
4130 {
4131  errcontext("PL/Perl anonymous code block");
4132 }
4133 
4134 
4135 /*
4136  * Perl's own setlocale(), copied from POSIX.xs
4137  * (needed because of the calls to new_*())
4138  */
4139 #ifdef WIN32
4140 static char *
4141 setlocale_perl(int category, char *locale)
4142 {
4143  dTHX;
4144  char *RETVAL = setlocale(category, locale);
4145 
4146  if (RETVAL)
4147  {
4148 #ifdef USE_LOCALE_CTYPE
4149  if (category == LC_CTYPE
4150 #ifdef LC_ALL
4151  || category == LC_ALL
4152 #endif
4153  )
4154  {
4155  char *newctype;
4156 
4157 #ifdef LC_ALL
4158  if (category == LC_ALL)
4159  newctype = setlocale(LC_CTYPE, NULL);
4160  else
4161 #endif
4162  newctype = RETVAL;
4163  new_ctype(newctype);
4164  }
4165 #endif /* USE_LOCALE_CTYPE */
4166 #ifdef USE_LOCALE_COLLATE
4167  if (category == LC_COLLATE
4168 #ifdef LC_ALL
4169  || category == LC_ALL
4170 #endif
4171  )
4172  {
4173  char *newcoll;
4174 
4175 #ifdef LC_ALL
4176  if (category == LC_ALL)
4177  newcoll = setlocale(LC_COLLATE, NULL);
4178  else
4179 #endif
4180  newcoll = RETVAL;
4181  new_collate(newcoll);
4182  }
4183 #endif /* USE_LOCALE_COLLATE */
4184 
4185 #ifdef USE_LOCALE_NUMERIC
4186  if (category == LC_NUMERIC
4187 #ifdef LC_ALL
4188  || category == LC_ALL
4189 #endif
4190  )
4191  {
4192  char *newnum;
4193 
4194 #ifdef LC_ALL
4195  if (category == LC_ALL)
4196  newnum = setlocale(LC_NUMERIC, NULL);
4197  else
4198 #endif
4199  newnum = RETVAL;
4200  new_numeric(newnum);
4201  }
4202 #endif /* USE_LOCALE_NUMERIC */
4203  }
4204 
4205  return RETVAL;
4206 }
4207 
4208 #endif /* WIN32 */
int SPI_fnumber(TupleDesc tupdesc, const char *fname)
Definition: spi.c:951
void tuplestore_putvalues(Tuplestorestate *state, TupleDesc tdesc, Datum *values, bool *isnull)
Definition: tuplestore.c:750
signed short int16
Definition: c.h:354
void UnpinPortal(Portal portal)
Definition: portalmem.c:379
#define eval_pv(a, b)
Definition: ppport.h:4314
Datum makeMdArrayResult(ArrayBuildState *astate, int ndims, int *dims, int *lbs, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5149
#define NIL
Definition: pg_list.h:65
#define HeUTF8(he)
Definition: plperl.h:186
static SV * plperl_ref_from_pg_array(Datum arg, Oid typid)
Definition: plperl.c:1465
FmgrInfo transform_proc
Definition: plperl.c:218
EXTERN_C void boot_PostgreSQL__InServer__SPI(pTHX_ CV *cv)
#define SPI_OK_CONNECT
Definition: spi.h:53
Oid get_transform_fromsql(Oid typid, Oid langid, List *trftypes)
Definition: lsyscache.c:1926
static char plperl_opmask[MAXO]
Definition: plperl.c:240
static PerlInterpreter * plperl_init_interp(void)
Definition: plperl.c:708
Definition: fmgr.h:56
Definition: plperl.c:201
static bool validate_plperl_function(plperl_proc_ptr *proc_ptr, HeapTuple procTup)
Definition: plperl.c:2653
#define CALLED_AS_EVENT_TRIGGER(fcinfo)
Definition: event_trigger.h:40
TupleDesc CreateTupleDescCopy(TupleDesc tupdesc)
Definition: tupdesc.c:110
static Datum plperl_func_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2387
#define IsA(nodeptr, _type_)
Definition: nodes.h:577
List * trftypes
Definition: plperl.c:113
void MemoryContextDelete(MemoryContext context)
Definition: mcxt.c:211
#define AllocSetContextCreate
Definition: memutils.h:170
#define PL_ppaddr
Definition: ppport.h:4085
static HTAB * plperl_proc_hash
Definition: plperl.c:226
#define decrement_prodesc_refcount(prodesc)
Definition: plperl.c:131
TypeFuncClass get_call_result_type(FunctionCallInfo fcinfo, Oid *resultTypeId, TupleDesc *resultTupleDesc)
Definition: funcapi.c:205
CommandTag tag
Definition: event_trigger.h:29
struct plperl_call_data plperl_call_data
static SV * get_perl_array_ref(SV *sv)
Definition: plperl.c:1141
bool * arg_is_rowtype
Definition: plperl.c:125
void getTypeOutputInfo(Oid type, Oid *typOutput, bool *typIsVarlena)
Definition: lsyscache.c:2700
#define GETSTRUCT(TUP)
Definition: htup_details.h:655
#define TEXTDOMAIN
Definition: plperl.c:44
MemoryContext fn_mcxt
Definition: fmgr.h:65
static char * hek2cstr(HE *he)
Definition: plperl.c:323
static Datum plperl_sv_to_datum(SV *sv, Oid typid, int32 typmod, FunctionCallInfo fcinfo, FmgrInfo *finfo, Oid typioparam, bool *isnull)
Definition: plperl.c:1310
HTAB * query_hash
Definition: plperl.c:89
static Datum plperl_array_to_datum(SV *src, Oid typid, int32 typmod)
Definition: plperl.c:1243
#define HASH_ELEM
Definition: hsearch.h:87
static char * plperl_on_init
Definition: plperl.c:234
static void plperl_init_shared_libs(pTHX)
Definition: plperl.c:2153
TupleDesc lookup_rowtype_tupdesc(Oid type_id, int32 typmod)
Definition: typcache.c:1710
static bool plperl_ending
Definition: plperl.c:238
uint32 TransactionId
Definition: c.h:513
FunctionCallInfo fcinfo
Definition: plperl.c:176
#define setlocale(a, b)
Definition: win32_port.h:408
ArrayBuildState * initArrayResult(Oid element_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5014
#define dTHX
Definition: ppport.h:3208
static void select_perl_context(bool trusted)
Definition: plperl.c:555
int SPI_connect_ext(int options)
Definition: spi.c:95
#define MAXDIM
Definition: c.h:535
#define DEBUG3
Definition: elog.h:23
Oid GetUserId(void)
Definition: miscinit.c:439
SPIPlanPtr plan
Definition: plperl.c:192
EXTERN_C void boot_DynaLoader(pTHX_ CV *cv)
int SPI_connect(void)
Definition: spi.c:89
SV * plperl_spi_query(char *query)
Definition: plperl.c:3373
#define castNode(_type_, nodeptr)
Definition: nodes.h:595
static HeapTuple plperl_modify_tuple(HV *hvTD, TriggerData *tdata, HeapTuple otup)
Definition: plperl.c:1747
void on_proc_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:305
ErrorData * CopyErrorData(void)
Definition: elog.c:1474
Oid get_element_type(Oid typid)
Definition: lsyscache.c:2552
struct plperl_proc_desc plperl_proc_desc
#define PointerGetDatum(X)
Definition: postgres.h:556
#define GvCV_set(gv, cv)
Definition: plperl.h:193
#define TupleDescAttr(tupdesc, i)
Definition: tupdesc.h:92
Oid * argtypioparams
Definition: plperl.c:196
ResourceOwner CurrentResourceOwner
Definition: resowner.c:142
char * pstrdup(const char *in)
Definition: mcxt.c:1186
SPIPlanPtr SPI_prepare(const char *src, int nargs, Oid *argtypes)
Definition: spi.c:674
#define ALLOCSET_SMALL_SIZES
Definition: memutils.h:202
void ReleaseCurrentSubTransaction(void)
Definition: xact.c:4430
#define SizeForFunctionCallInfo(nargs)
Definition: fmgr.h:102
static void set_interp_require(bool trusted)
Definition: plperl.c:492
int SPI_finish(void)
Definition: spi.c:176
struct plperl_interp_desc plperl_interp_desc
#define AV_SIZE_MAX
Definition: plperl.h:200
int get_func_arg_info(HeapTuple procTup, Oid **p_argtypes, char ***p_argnames, char **p_argmodes)
Definition: funcapi.c:1094
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
Oid get_func_signature(Oid funcid, Oid **argtypes, int *nargs)
Definition: lsyscache.c:1524
SV * plperl_spi_fetchrow(char *cursor)
Definition: plperl.c:3445
Size entrysize
Definition: hsearch.h:73
#define gettext_noop(x)
Definition: c.h:1160
SPITupleTable * SPI_tuptable
Definition: spi.c:46
#define PL_sv_undef
Definition: ppport.h:4129
int errcode(int sqlerrcode)
Definition: elog.c:610
#define ERRSV
Definition: ppport.h:3859
static SV ** hv_fetch_string(HV *hv, const char *key)
Definition: plperl.c:4082
char get_typtype(Oid typid)
Definition: lsyscache.c:2433
MemoryContext fn_cxt
Definition: plperl.c:105
#define MemSet(start, val, len)
Definition: c.h:971
static SV * plperl_hash_from_datum(Datum attr)
Definition: plperl.c:2984
char * format_type_be(Oid type_oid)
Definition: format_type.c:327
fmNodePtr context
Definition: fmgr.h:88
void plperl_spi_cursor_close(char *cursor)
Definition: plperl.c:3520
static plperl_interp_desc * plperl_active_interp
Definition: plperl.c:227
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:271
void MemoryContextReset(MemoryContext context)
Definition: mcxt.c:136
Portal SPI_cursor_open(const char *name, SPIPlanPtr plan, Datum *Values, const char *Nulls, bool read_only)
Definition: spi.c:1221
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, Datum *values, bool *isnull)
Definition: heaptuple.c:1020
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:615
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
struct plperl_query_desc plperl_query_desc
void * hash_search(HTAB *hashp, const void *keyPtr, HASHACTION action, bool *foundPtr)
Definition: dynahash.c:907
PerlInterpreter * interp
Definition: plperl.c:88
bool check_function_bodies
Definition: guc.c:533
static SV ** hv_store_string(HV *hv, const char *key, SV *val)
Definition: plperl.c:4055
unsigned int Oid
Definition: postgres_ext.h:31
HeapTuple * vals
Definition: spi.h:26
NameData subname
void SPI_rollback(void)
Definition: spi.c:333
#define TRIGGER_FIRED_AFTER(event)
Definition: trigger.h:138
Datum oidout(PG_FUNCTION_ARGS)
Definition: oid.c:127
void(* callback)(void *arg)
Definition: elog.h:229
FmgrInfo * arg_out_func
Definition: plperl.c:124
struct ErrorContextCallback * previous
Definition: elog.h:228
#define OidIsValid(objectId)
Definition: c.h:644
#define DatumGetHeapTupleHeader(X)
Definition: fmgr.h:289
SV * plperl_spi_prepare(char *query, int argc, SV **argv)
Definition: plperl.c:3536
plperl_proc_key proc_key
Definition: plperl.c:165
#define aTHX_
Definition: ppport.h:3227
static OP *(* pp_require_orig)(pTHX)
Definition: plperl.c:239
#define dVAR
Definition: ppport.h:3934
void FlushErrorState(void)
Definition: elog.c:1568
uint64 SPI_processed
Definition: spi.c:45
#define TRIGGER_FIRED_FOR_STATEMENT(event)
Definition: trigger.h:132
static void plperl_event_trigger_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2616
TupleDesc lookup_rowtype_tupdesc_domain(Oid type_id, int32 typmod, bool noError)
Definition: typcache.c:1766
HeapTuple tg_trigtuple
Definition: trigger.h:35
char * pg_server_to_any(const char *s, int len, int encoding)
Definition: mbutils.c:692
signed int int32
Definition: c.h:355
void plperl_spi_commit(void)
Definition: plperl.c:3960
#define PERL_UNUSED_VAR(x)
Definition: ppport.h:3730
static SV * split_array(plperl_array_info *info, int first, int last, int nest)
Definition: plperl.c:1544
char * OutputFunctionCall(FmgrInfo *flinfo, Datum val)
Definition: fmgr.c:1575
Portal SPI_cursor_find(const char *name)
Definition: spi.c:1521
HeapTupleHeader t_data
Definition: htup.h:68
void * cdomain_info
Definition: plperl.c:181
static void plperl_call_perl_event_trigger_func(plperl_proc_desc *desc, FunctionCallInfo fcinfo, SV *td)
Definition: plperl.c:2326
ErrorContextCallback * error_context_stack
Definition: elog.c:92
#define HeapTupleHeaderGetTypMod(tup)
Definition: htup_details.h:468
void plperl_spi_freeplan(char *query)
Definition: plperl.c:3929
#define NAMEDATALEN
List * oid_array_to_list(Datum datum)
Definition: pg_proc.c:1142
#define EXTERN_C
Definition: ppport.h:3808
int SPI_result
Definition: spi.c:47
#define sprintf
Definition: port.h:194
static void plperl_untrusted_init(void)
Definition: plperl.c:1041
Definition: dynahash.c:209
TupleDesc expectedDesc
Definition: execnodes.h:302
NVTYPE NV
Definition: ppport.h:3754
static Datum plperl_trigger_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2503
void pfree(void *pointer)
Definition: mcxt.c:1056
const char * name
Definition: portal.h:118
char typalign
Definition: pg_type.h:170
static SV * make_array_ref(plperl_array_info *info, int first, int last)
Definition: plperl.c:1578
#define TRIGGER_FIRED_BY_TRUNCATE(event)
Definition: trigger.h:126
bool fn_retisset
Definition: plperl.c:116
#define ObjectIdGetDatum(X)
Definition: postgres.h:507
#define ERROR
Definition: elog.h:43
NameData attname
Definition: pg_attribute.h:40
plperl_proc_desc * proc_ptr
Definition: plperl.c:166
#define DatumGetCString(X)
Definition: postgres.h:566
ItemPointerData fn_tid
Definition: plperl.c:108
fmNodePtr resultinfo
Definition: fmgr.h:89
bool CheckFunctionValidatorAccess(Oid validatorOid, Oid functionOid)
Definition: fmgr.c:1986
#define SPI_OPT_NONATOMIC
Definition: spi.h:71
char * tgname
Definition: reltrigger.h:27
#define newSVuv(uv)
Definition: ppport.h:3596
NullableDatum args[FLEXIBLE_ARRAY_MEMBER]
Definition: fmgr.h:95
#define ARR_DIMS(a)
Definition: array.h:282
void fmgr_info(Oid functionId, FmgrInfo *finfo)
Definition: fmgr.c:124
const char * event
Definition: event_trigger.h:27
Definition: guc.h:75
void EmitWarningsOnPlaceholders(const char *className)
Definition: guc.c:8883
ItemPointerData t_self
Definition: htup.h:65
int SPI_execute_plan(SPIPlanPtr plan, Datum *Values, const char *Nulls, bool read_only, long tcount)
Definition: spi.c:531
FmgrInfo result_in_func
Definition: plperl.c:120
#define OidFunctionCall1(functionId, arg1)
Definition: fmgr.h:653
const char * SPI_result_code_string(int code)
Definition: spi.c:1699
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:192
void tuplestore_puttuple(Tuplestorestate *state, HeapTuple tuple)
Definition: tuplestore.c:730
uint32 t_len
Definition: htup.h:64
static plperl_proc_desc * compile_plperl_function(Oid fn_oid, bool is_trigger, bool is_event_trigger)
Definition: plperl.c:2700
int SPI_keepplan(SPIPlanPtr plan)
Definition: spi.c:752
Datum plperl_call_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:1837
static void plperl_trusted_init(void)
Definition: plperl.c:960
void RollbackAndReleaseCurrentSubTransaction(void)
Definition: xact.c:4464
void PinPortal(Portal portal)
Definition: portalmem.c:370
#define PG_GETARG_OID(n)
Definition: fmgr.h:270
void check_stack_depth(void)
Definition: postgres.c:3292
static void plperl_fini(int code, Datum arg)
Definition: plperl.c:511
#define SPI_ERROR_NOATTRIBUTE
Definition: spi.h:47
#define pTHX_
Definition: ppport.h:3219
#define CStringGetDatum(X)
Definition: postgres.h:578
Definition: type.h:130
static void activate_interpreter(plperl_interp_desc *interp_desc)
Definition: plperl.c:687
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:193
static Datum plperl_hash_to_datum(SV *src, TupleDesc td)
Definition: plperl.c:1129
Oid * argtypes
Definition: plperl.c:194
MemoryContext CurrentMemoryContext
Definition: mcxt.c:38
MemoryContext plan_cxt
Definition: plperl.c:191
TypeFuncClass
Definition: funcapi.h:146
Definition: type.h:82
bool type_is_rowtype(Oid typid)
Definition: lsyscache.c:2459
static void plperl_exec_callback(void *arg)
Definition: plperl.c:4105
void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo, MemoryContext mcxt)
Definition: fmgr.c:134
#define increment_prodesc_refcount(prodesc)
Definition: plperl.c:129
Oid result_typioparam
Definition: plperl.c:121
void getTypeInputInfo(Oid type, Oid *typInput, Oid *typIOParam)
Definition: lsyscache.c:2667
int SPI_register_trigger_data(TriggerData *tdata)
Definition: spi.c:2924
Datum value
Definition: postgres.h:378
void plperl_util_elog(int level, SV *msg)
Definition: plperl.c:4021
Oid * arg_arraytype
Definition: plperl.c:126
MemoryContext TopMemoryContext
Definition: mcxt.c:44
Oid rd_id
Definition: rel.h:91
unsigned long fn_refcount
Definition: plperl.c:106
char * plperl_sv_to_literal(SV *sv, char *fqtypename)
Definition: plperl.c:1431
Definition: guc.h:72
PG_MODULE_MAGIC
Definition: plperl.c:58
void SPI_commit(void)
Definition: spi.c:278
#define WARNING
Definition: elog.h:40
#define heap_getattr(tup, attnum, tupleDesc, isnull)
Definition: htup_details.h:762
void SPI_freetuptable(SPITupleTable *tuptable)
Definition: spi.c:1162
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1116
char ** tgargs
Definition: reltrigger.h:41
#define newRV_noinc(a)
Definition: ppport.h:4456
#define TRIGGER_FIRED_BY_DELETE(event)
Definition: trigger.h:120
Tuplestorestate * tuplestore_begin_heap(bool randomAccess, bool interXact, int maxKBytes)
Definition: tuplestore.c:318
#define HASH_BLOBS
Definition: hsearch.h:88
#define PG_FINALLY()
Definition: elog.h:312
#define TextDatumGetCString(d)
Definition: builtins.h:88
static void plperl_return_next_internal(SV *sv)
Definition: plperl.c:3244
Datum regtypein(PG_FUNCTION_ARGS)
Definition: regproc.c:1213
Oid is_trigger
Definition: plperl.c:159
void * palloc0(Size size)
Definition: mcxt.c:980
char qname[24]
Definition: plperl.c:190
void DefineCustomStringVariable(const char *name, const char *short_desc, const char *long_desc, char **valueAddr, const char *bootValue, GucContext context, int flags, GucStringCheckHook check_hook, GucStringAssignHook assign_hook, GucShowHook show_hook)
Definition: guc.c:8830
HTAB * hash_create(const char *tabname, long nelem, HASHCTL *info, int flags)
Definition: dynahash.c:317
uintptr_t Datum
Definition: postgres.h:367
SV * plperl_spi_query_prepared(char *query, int argc, SV **argv)
Definition: plperl.c:3811
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1164
FmgrInfo * flinfo
Definition: fmgr.h:87
struct @17::@18 av[32]
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:1377
static void free_plperl_function(plperl_proc_desc *prodesc)
Definition: plperl.c:2682
FmgrInfo * arginfuncs
Definition: plperl.c:195
static void croak_cstr(const char *str)
#define HeapTupleHeaderGetTypeId(tup)
Definition: htup_details.h:458
Size keysize
Definition: hsearch.h:72
int work_mem
Definition: globals.c:121
#define newRV_inc(sv)
Definition: ppport.h:4442
TupleDesc tupdesc
Definition: spi.h:25
Tuplestorestate * tuple_store
Definition: plperl.c:178
void domain_check(Datum value, bool isnull, Oid domainType, void **extra, MemoryContext mcxt)
Definition: domains.c:327
Trigger * tg_trigger
Definition: trigger.h:37
TupleDesc rd_att
Definition: rel.h:90
HeapTuple tg_newtuple
Definition: trigger.h:36
static void plperl_destroy_interp(PerlInterpreter **)
Definition: plperl.c:921
bool elem_is_rowtype
Definition: plperl.c:213
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:133
static SV * cstr2sv(const char *str)
void parseTypeString(const char *str, Oid *typeid_p, int32 *typmod_p, bool missing_ok)
Definition: parse_type.c:832
Datum InputFunctionCall(FmgrInfo *flinfo, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1531
#define UV_MAX
Definition: ppport.h:3566
char * SPI_getrelname(Relation rel)
Definition: spi.c:1102
static void SvREFCNT_dec_current(SV *sv)
Definition: plperl.c:312
#define InvalidOid
Definition: postgres_ext.h:36
bool pg_verifymbstr(const char *mbstr, int len, bool noError)
Definition: mbutils.c:1446
Oid fn_oid
Definition: fmgr.h:59
#define ereport(elevel,...)
Definition: elog.h:144
int allowedModes
Definition: execnodes.h:303
TupleDesc ret_tdesc
Definition: plperl.c:179
static void plperl_inline_callback(void *arg)
Definition: plperl.c:4129
bool fn_readonly
Definition: plperl.c:111
pqsigfunc pqsignal(int signum, pqsigfunc handler)
Definition: signal.c:170
static SV * plperl_trigger_build_args(FunctionCallInfo fcinfo)
Definition: plperl.c:1616
#define PG_RETURN_VOID()
Definition: fmgr.h:339
MemoryContext tmp_cxt
Definition: plperl.c:182
EXTERN_C void boot_PostgreSQL__InServer__Util(pTHX_ CV *cv)
#define LOCAL_FCINFO(name, nargs)
Definition: fmgr.h:110
SetFunctionReturnMode returnMode
Definition: execnodes.h:305
#define PG_CATCH()
Definition: elog.h:305
#define HeapTupleIsValid(tuple)
Definition: htup.h:78
static char * plperl_on_plperl_init
Definition: plperl.c:235
#define CALLED_AS_TRIGGER(fcinfo)
Definition: trigger.h:25
#define Assert(condition)
Definition: c.h:738
static bool plperl_use_strict
Definition: plperl.c:233
TriggerEvent tg_event
Definition: trigger.h:33
void BeginInternalSubTransaction(const char *name)
Definition: xact.c:4359
SV * reference
Definition: plperl.c:109
char * SPI_getnspname(Relation rel)
Definition: spi.c:1108
FormData_pg_type * Form_pg_type
Definition: pg_type.h:255
void plperl_return_next(SV *sv)
Definition: plperl.c:3216
#define SPI_OK_FINISH
Definition: spi.h:54
void MemoryContextSetIdentifier(MemoryContext context, const char *id)
Definition: mcxt.c:329
static SV * plperl_event_trigger_build_args(FunctionCallInfo fcinfo)
Definition: plperl.c:1729
#define HeapTupleHeaderGetRawXmin(tup)
Definition: htup_details.h:308
#define PG_RE_THROW()
Definition: elog.h:336
static char * strip_trailing_ws(const char *msg)
Definition: plperl.c:1064
#define HeapTupleGetDatum(tuple)
Definition: funcapi.h:220
void * hash_seq_search(HASH_SEQ_STATUS *status)
Definition: dynahash.c:1390
static char * plperl_on_plperlu_init
Definition: plperl.c:236
MemoryContext ecxt_per_query_memory
Definition: execnodes.h:231
#define ARR_NDIM(a)
Definition: array.h:278
struct plperl_proc_key plperl_proc_key
bool ItemPointerEquals(ItemPointer pointer1, ItemPointer pointer2)
Definition: itemptr.c:29
void hash_seq_init(HASH_SEQ_STATUS *status, HTAB *hashp)
Definition: dynahash.c:1380
const char * name
Definition: encode.c:521
static HeapTuple plperl_build_tuple_result(HV *perlhash, TupleDesc td)
Definition: plperl.c:1078
FmgrInfo proc
Definition: plperl.c:217
Oid get_transform_tosql(Oid typid, Oid langid, List *trftypes)
Definition: lsyscache.c:1947
Tuplestorestate * setResult
Definition: execnodes.h:308
#define DatumGetPointer(X)
Definition: postgres.h:549
static void check_spi_usage_allowed(void)
Definition: plperl.c:3092
#define pTHX
Definition: ppport.h:3215
PG_FUNCTION_INFO_V1(plperl_call_handler)
#define TRIGGER_FIRED_BEFORE(event)
Definition: trigger.h:135
void deconstruct_array(ArrayType *array, Oid elmtype, int elmlen, bool elmbyval, char elmalign, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3461
static void plperl_compile_callback(void *arg)
Definition: plperl.c:4117
int SPI_freeplan(SPIPlanPtr plan)
Definition: spi.c:801
static Datum values[MAXATTR]
Definition: bootstrap.c:167
void SPI_cursor_close(Portal portal)
Definition: spi.c:1589
#define TRIGGER_FIRED_INSTEAD(event)
Definition: trigger.h:141
const char * GetCommandTagName(CommandTag commandTag)
Definition: cmdtag.c:45
static PerlInterpreter * plperl_held_interp
Definition: plperl.c:230
ArrayBuildState * accumArrayResult(ArrayBuildState *astate, Datum dvalue, bool disnull, Oid element_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5053
Oid get_base_element_type(Oid typid)
Definition: lsyscache.c:2625
ExprContext * econtext
Definition: execnodes.h:301
Oid tdtypeid
Definition: tupdesc.h:82
bool * nulls
Definition: plperl.c:215
static OP * pp_require_safe(pTHX)
Definition: plperl.c:883
static HTAB * plperl_interp_hash
Definition: plperl.c:225
#define TRIGGER_FIRED_BY_INSERT(event)
Definition: trigger.h:117
TupleDesc setDesc
Definition: execnodes.h:309
char * OidOutputFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:1655
FormData_pg_language * Form_pg_language
Definition: pg_language.h:65
void * palloc(Size size)
Definition: mcxt.c:949
Datum plperlu_validator(PG_FUNCTION_ARGS)
Definition: plperl.c:2068
int errmsg(const char *fmt,...)
Definition: elog.c:824
void plperl_spi_rollback(void)
Definition: plperl.c:3985
static SV * plperl_hash_from_tuple(HeapTuple tuple, TupleDesc tupdesc, bool include_generated)
Definition: plperl.c:3012
#define get_sv
Definition: ppport.h:3878
bool fn_retistuple
Definition: plperl.c:115
#define elog(elevel,...)
Definition: elog.h:214
Datum plperl_inline_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:1879
int i
void FloatExceptionHandler(SIGNAL_ARGS)
Definition: postgres.c:2858
Oid getTypeIOParam(HeapTuple typeTuple)
Definition: lsyscache.c:2107
void pg_bindtextdomain(const char *domain)
Definition: miscinit.c:1644
Datum * elements
Definition: plperl.c:214
#define FunctionCall1(flinfo, arg1)
Definition: fmgr.h:633
int16 tgnargs
Definition: reltrigger.h:38
#define NameStr(name)
Definition: c.h:615
#define errcontext
Definition: elog.h:185
static char * locale
Definition: initdb.c:125
static HV * plperl_spi_execute_fetch_result(SPITupleTable *, uint64, int)
Definition: plperl.c:3164
void * arg
struct plperl_query_entry plperl_query_entry
void SPI_cursor_fetch(Portal portal, bool forward, long count)
Definition: spi.c:1533
static void plperl_create_sub(plperl_proc_desc *desc, const char *s, Oid fn_oid)
Definition: plperl.c:2080
char * proname
Definition: plperl.c:104
char * source_text
Definition: parsenodes.h:2881
#define PG_FUNCTION_ARGS
Definition: fmgr.h:188
void SPI_start_transaction(void)
Definition: spi.c:212
plperl_proc_desc * prodesc
Definition: plperl.c:175
#define CHECK_FOR_INTERRUPTS()
Definition: miscadmin.h:99
TransactionId fn_xmin
Definition: plperl.c:107
HV * plperl_spi_exec(char *query, int limit)
Definition: plperl.c:3104
static void _sv_to_datum_finfo(Oid typid, FmgrInfo *finfo, Oid *typioparam)
Definition: plperl.c:1287
ExprDoneCond isDone
Definition: execnodes.h:306
static void array_to_datum_internal(AV *av, ArrayBuildState *astate, int *ndims, int *dims, int cur_depth, Oid arraytypid, Oid elemtypid, int32 typmod, FmgrInfo *finfo, Oid typioparam)
Definition: plperl.c:1168
static void static void status(const char *fmt,...) pg_attribute_printf(1
Definition: pg_regress.c:225
#define ReleaseTupleDesc(tupdesc)
Definition: tupdesc.h:122
#define PG_TRY()
Definition: elog.h:295
plperl_interp_desc * interp
Definition: plperl.c:110
#define TRIGGER_FIRED_FOR_ROW(event)
Definition: trigger.h:129
HeapTuple heap_modify_tuple(HeapTuple tuple, TupleDesc tupleDesc, Datum *replValues, bool *replIsnull, bool *doReplace)
Definition: heaptuple.c:1113
#define PL_sv_no
Definition: ppport.h:4128
struct plperl_array_info plperl_array_info
void DefineCustomBoolVariable(const char *name, const char *short_desc, const char *long_desc, bool *valueAddr, bool bootValue, GucContext context, int flags, GucBoolCheckHook check_hook, GucBoolAssignHook assign_hook, GucShowHook show_hook)
Definition: guc.c:8744
Definition: pg_list.h:50
#define snprintf
Definition: port.h:192
Datum plperl_validator(PG_FUNCTION_ARGS)
Definition: plperl.c:1974
static plperl_call_data * current_call_data
Definition: plperl.c:243
#define TRIGGER_FIRED_BY_UPDATE(event)
Definition: trigger.h:123
#define ARR_ELEMTYPE(a)
Definition: array.h:280
Datum plperlu_call_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2052
Datum plperlu_inline_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2060
long val
Definition: informix.c:664
HV * plperl_spi_exec_prepared(char *query, HV *attr, int argc, SV **argv)
Definition: plperl.c:3684
#define isGV_with_GP(gv)
Definition: ppport.h:5367
#define PG_END_TRY()
Definition: elog.h:320
char * message
Definition: elog.h:365
static SV * plperl_call_perl_trigger_func(plperl_proc_desc *desc, FunctionCallInfo fcinfo, SV *td)
Definition: plperl.c:2258
static char * sv2cstr(SV *sv)
bool lanpltrusted
Definition: plperl.c:114
static SV * plperl_call_perl_func(plperl_proc_desc *desc, FunctionCallInfo fcinfo)
Definition: plperl.c:2165
bool fn_retisarray
Definition: plperl.c:117
void _PG_init(void)
Definition: plperl.c:380
int SPI_execute(const char *src, bool read_only, long tcount)
Definition: spi.c:496
#define PG_USED_FOR_ASSERTS_ONLY
Definition: c.h:121
struct plperl_proc_ptr plperl_proc_ptr
Relation tg_relation
Definition: trigger.h:34
#define HeapTupleHeaderGetDatumLength(tup)
Definition: htup_details.h:452
#define DatumGetArrayTypeP(X)
Definition: array.h:249
void get_type_io_data(Oid typid, IOFuncSelector which_func, int16 *typlen, bool *typbyval, char *typalign, char *typdelim, Oid *typioparam, Oid *func)
Definition: lsyscache.c:2129
plperl_query_desc * query_data
Definition: plperl.c:204