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plperl.c
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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  hash_ctl.keysize = sizeof(Oid);
462  hash_ctl.entrysize = sizeof(plperl_interp_desc);
463  plperl_interp_hash = hash_create("PL/Perl interpreters",
464  8,
465  &hash_ctl,
467 
468  hash_ctl.keysize = sizeof(plperl_proc_key);
469  hash_ctl.entrysize = sizeof(plperl_proc_ptr);
470  plperl_proc_hash = hash_create("PL/Perl procedures",
471  32,
472  &hash_ctl,
474 
475  /*
476  * Save the default opmask.
477  */
478  PLPERL_SET_OPMASK(plperl_opmask);
479 
480  /*
481  * Create the first Perl interpreter, but only partially initialize it.
482  */
484 
485  inited = true;
486 }
487 
488 
489 static void
490 set_interp_require(bool trusted)
491 {
492  if (trusted)
493  {
494  PL_ppaddr[OP_REQUIRE] = pp_require_safe;
495  PL_ppaddr[OP_DOFILE] = pp_require_safe;
496  }
497  else
498  {
499  PL_ppaddr[OP_REQUIRE] = pp_require_orig;
500  PL_ppaddr[OP_DOFILE] = pp_require_orig;
501  }
502 }
503 
504 /*
505  * Cleanup perl interpreters, including running END blocks.
506  * Does not fully undo the actions of _PG_init() nor make it callable again.
507  */
508 static void
510 {
511  HASH_SEQ_STATUS hash_seq;
512  plperl_interp_desc *interp_desc;
513 
514  elog(DEBUG3, "plperl_fini");
515 
516  /*
517  * Indicate that perl is terminating. Disables use of spi_* functions when
518  * running END/DESTROY code. See check_spi_usage_allowed(). Could be
519  * enabled in future, with care, using a transaction
520  * http://archives.postgresql.org/pgsql-hackers/2010-01/msg02743.php
521  */
522  plperl_ending = true;
523 
524  /* Only perform perl cleanup if we're exiting cleanly */
525  if (code)
526  {
527  elog(DEBUG3, "plperl_fini: skipped");
528  return;
529  }
530 
531  /* Zap the "held" interpreter, if we still have it */
533 
534  /* Zap any fully-initialized interpreters */
535  hash_seq_init(&hash_seq, plperl_interp_hash);
536  while ((interp_desc = hash_seq_search(&hash_seq)) != NULL)
537  {
538  if (interp_desc->interp)
539  {
540  activate_interpreter(interp_desc);
541  plperl_destroy_interp(&interp_desc->interp);
542  }
543  }
544 
545  elog(DEBUG3, "plperl_fini: done");
546 }
547 
548 
549 /*
550  * Select and activate an appropriate Perl interpreter.
551  */
552 static void
553 select_perl_context(bool trusted)
554 {
555  Oid user_id;
556  plperl_interp_desc *interp_desc;
557  bool found;
558  PerlInterpreter *interp = NULL;
559 
560  /* Find or create the interpreter hashtable entry for this userid */
561  if (trusted)
562  user_id = GetUserId();
563  else
564  user_id = InvalidOid;
565 
566  interp_desc = hash_search(plperl_interp_hash, &user_id,
567  HASH_ENTER,
568  &found);
569  if (!found)
570  {
571  /* Initialize newly-created hashtable entry */
572  interp_desc->interp = NULL;
573  interp_desc->query_hash = NULL;
574  }
575 
576  /* Make sure we have a query_hash for this interpreter */
577  if (interp_desc->query_hash == NULL)
578  {
579  HASHCTL hash_ctl;
580 
581  hash_ctl.keysize = NAMEDATALEN;
582  hash_ctl.entrysize = sizeof(plperl_query_entry);
583  interp_desc->query_hash = hash_create("PL/Perl queries",
584  32,
585  &hash_ctl,
587  }
588 
589  /*
590  * Quick exit if already have an interpreter
591  */
592  if (interp_desc->interp)
593  {
594  activate_interpreter(interp_desc);
595  return;
596  }
597 
598  /*
599  * adopt held interp if free, else create new one if possible
600  */
601  if (plperl_held_interp != NULL)
602  {
603  /* first actual use of a perl interpreter */
604  interp = plperl_held_interp;
605 
606  /*
607  * Reset the plperl_held_interp pointer first; if we fail during init
608  * we don't want to try again with the partially-initialized interp.
609  */
610  plperl_held_interp = NULL;
611 
612  if (trusted)
614  else
616 
617  /* successfully initialized, so arrange for cleanup */
619  }
620  else
621  {
622 #ifdef MULTIPLICITY
623 
624  /*
625  * plperl_init_interp will change Perl's idea of the active
626  * interpreter. Reset plperl_active_interp temporarily, so that if we
627  * hit an error partway through here, we'll make sure to switch back
628  * to a non-broken interpreter before running any other Perl
629  * functions.
630  */
631  plperl_active_interp = NULL;
632 
633  /* Now build the new interpreter */
634  interp = plperl_init_interp();
635 
636  if (trusted)
638  else
640 #else
641  ereport(ERROR,
642  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
643  errmsg("cannot allocate multiple Perl interpreters on this platform")));
644 #endif
645  }
646 
647  set_interp_require(trusted);
648 
649  /*
650  * Since the timing of first use of PL/Perl can't be predicted, any
651  * database interaction during initialization is problematic. Including,
652  * but not limited to, security definer issues. So we only enable access
653  * to the database AFTER on_*_init code has run. See
654  * http://archives.postgresql.org/pgsql-hackers/2010-01/msg02669.php
655  */
656  {
657  dTHX;
658 
659  newXS("PostgreSQL::InServer::SPI::bootstrap",
661 
662  eval_pv("PostgreSQL::InServer::SPI::bootstrap()", FALSE);
663  if (SvTRUE(ERRSV))
664  ereport(ERROR,
665  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
667  errcontext("while executing PostgreSQL::InServer::SPI::bootstrap")));
668  }
669 
670  /* Fully initialized, so mark the hashtable entry valid */
671  interp_desc->interp = interp;
672 
673  /* And mark this as the active interpreter */
674  plperl_active_interp = interp_desc;
675 }
676 
677 /*
678  * Make the specified interpreter the active one
679  *
680  * A call with NULL does nothing. This is so that "restoring" to a previously
681  * null state of plperl_active_interp doesn't result in useless thrashing.
682  */
683 static void
685 {
686  if (interp_desc && plperl_active_interp != interp_desc)
687  {
688  Assert(interp_desc->interp);
689  PERL_SET_CONTEXT(interp_desc->interp);
690  /* trusted iff user_id isn't InvalidOid */
691  set_interp_require(OidIsValid(interp_desc->user_id));
692  plperl_active_interp = interp_desc;
693  }
694 }
695 
696 /*
697  * Create a new Perl interpreter.
698  *
699  * We initialize the interpreter as far as we can without knowing whether
700  * it will become a trusted or untrusted interpreter; in particular, the
701  * plperl.on_init code will get executed. Later, either plperl_trusted_init
702  * or plperl_untrusted_init must be called to complete the initialization.
703  */
704 static PerlInterpreter *
706 {
707  PerlInterpreter *plperl;
708 
709  static char *embedding[3 + 2] = {
710  "", "-e", PLC_PERLBOOT
711  };
712  int nargs = 3;
713 
714 #ifdef WIN32
715 
716  /*
717  * The perl library on startup does horrible things like call
718  * setlocale(LC_ALL,""). We have protected against that on most platforms
719  * by setting the environment appropriately. However, on Windows,
720  * setlocale() does not consult the environment, so we need to save the
721  * existing locale settings before perl has a chance to mangle them and
722  * restore them after its dirty deeds are done.
723  *
724  * MSDN ref:
725  * http://msdn.microsoft.com/library/en-us/vclib/html/_crt_locale.asp
726  *
727  * It appears that we only need to do this on interpreter startup, and
728  * subsequent calls to the interpreter don't mess with the locale
729  * settings.
730  *
731  * We restore them using setlocale_perl(), defined below, so that Perl
732  * doesn't have a different idea of the locale from Postgres.
733  *
734  */
735 
736  char *loc;
737  char *save_collate,
738  *save_ctype,
739  *save_monetary,
740  *save_numeric,
741  *save_time;
742 
743  loc = setlocale(LC_COLLATE, NULL);
744  save_collate = loc ? pstrdup(loc) : NULL;
745  loc = setlocale(LC_CTYPE, NULL);
746  save_ctype = loc ? pstrdup(loc) : NULL;
747  loc = setlocale(LC_MONETARY, NULL);
748  save_monetary = loc ? pstrdup(loc) : NULL;
749  loc = setlocale(LC_NUMERIC, NULL);
750  save_numeric = loc ? pstrdup(loc) : NULL;
751  loc = setlocale(LC_TIME, NULL);
752  save_time = loc ? pstrdup(loc) : NULL;
753 
754 #define PLPERL_RESTORE_LOCALE(name, saved) \
755  STMT_START { \
756  if (saved != NULL) { setlocale_perl(name, saved); pfree(saved); } \
757  } STMT_END
758 #endif /* WIN32 */
759 
761  {
762  embedding[nargs++] = "-e";
763  embedding[nargs++] = plperl_on_init;
764  }
765 
766  /*
767  * The perl API docs state that PERL_SYS_INIT3 should be called before
768  * allocating interpreters. Unfortunately, on some platforms this fails in
769  * the Perl_do_taint() routine, which is called when the platform is using
770  * the system's malloc() instead of perl's own. Other platforms, notably
771  * Windows, fail if PERL_SYS_INIT3 is not called. So we call it if it's
772  * available, unless perl is using the system malloc(), which is true when
773  * MYMALLOC is set.
774  */
775 #if defined(PERL_SYS_INIT3) && !defined(MYMALLOC)
776  {
777  static int perl_sys_init_done;
778 
779  /* only call this the first time through, as per perlembed man page */
780  if (!perl_sys_init_done)
781  {
782  char *dummy_env[1] = {NULL};
783 
784  PERL_SYS_INIT3(&nargs, (char ***) &embedding, (char ***) &dummy_env);
785 
786  /*
787  * For unclear reasons, PERL_SYS_INIT3 sets the SIGFPE handler to
788  * SIG_IGN. Aside from being extremely unfriendly behavior for a
789  * library, this is dumb on the grounds that the results of a
790  * SIGFPE in this state are undefined according to POSIX, and in
791  * fact you get a forced process kill at least on Linux. Hence,
792  * restore the SIGFPE handler to the backend's standard setting.
793  * (See Perl bug 114574 for more information.)
794  */
796 
797  perl_sys_init_done = 1;
798  /* quiet warning if PERL_SYS_INIT3 doesn't use the third argument */
799  dummy_env[0] = NULL;
800  }
801  }
802 #endif
803 
804  plperl = perl_alloc();
805  if (!plperl)
806  elog(ERROR, "could not allocate Perl interpreter");
807 
808  PERL_SET_CONTEXT(plperl);
809  perl_construct(plperl);
810 
811  /*
812  * Run END blocks in perl_destruct instead of perl_run. Note that dTHX
813  * loads up a pointer to the current interpreter, so we have to postpone
814  * it to here rather than put it at the function head.
815  */
816  {
817  dTHX;
818 
819  PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
820 
821  /*
822  * Record the original function for the 'require' and 'dofile'
823  * opcodes. (They share the same implementation.) Ensure it's used
824  * for new interpreters.
825  */
826  if (!pp_require_orig)
827  pp_require_orig = PL_ppaddr[OP_REQUIRE];
828  else
829  {
830  PL_ppaddr[OP_REQUIRE] = pp_require_orig;
831  PL_ppaddr[OP_DOFILE] = pp_require_orig;
832  }
833 
834 #ifdef PLPERL_ENABLE_OPMASK_EARLY
835 
836  /*
837  * For regression testing to prove that the PLC_PERLBOOT and
838  * PLC_TRUSTED code doesn't even compile any unsafe ops. In future
839  * there may be a valid need for them to do so, in which case this
840  * could be softened (perhaps moved to plperl_trusted_init()) or
841  * removed.
842  */
843  PL_op_mask = plperl_opmask;
844 #endif
845 
846  if (perl_parse(plperl, plperl_init_shared_libs,
847  nargs, embedding, NULL) != 0)
848  ereport(ERROR,
849  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
851  errcontext("while parsing Perl initialization")));
852 
853  if (perl_run(plperl) != 0)
854  ereport(ERROR,
855  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
857  errcontext("while running Perl initialization")));
858 
859 #ifdef PLPERL_RESTORE_LOCALE
860  PLPERL_RESTORE_LOCALE(LC_COLLATE, save_collate);
861  PLPERL_RESTORE_LOCALE(LC_CTYPE, save_ctype);
862  PLPERL_RESTORE_LOCALE(LC_MONETARY, save_monetary);
863  PLPERL_RESTORE_LOCALE(LC_NUMERIC, save_numeric);
864  PLPERL_RESTORE_LOCALE(LC_TIME, save_time);
865 #endif
866  }
867 
868  return plperl;
869 }
870 
871 
872 /*
873  * Our safe implementation of the require opcode.
874  * This is safe because it's completely unable to load any code.
875  * If the requested file/module has already been loaded it'll return true.
876  * If not, it'll die.
877  * So now "use Foo;" will work iff Foo has already been loaded.
878  */
879 static OP *
881 {
882  dVAR;
883  dSP;
884  SV *sv,
885  **svp;
886  char *name;
887  STRLEN len;
888 
889  sv = POPs;
890  name = SvPV(sv, len);
891  if (!(name && len > 0 && *name))
892  RETPUSHNO;
893 
894  svp = hv_fetch(GvHVn(PL_incgv), name, len, 0);
895  if (svp && *svp != &PL_sv_undef)
896  RETPUSHYES;
897 
898  DIE(aTHX_ "Unable to load %s into plperl", name);
899 
900  /*
901  * In most Perl versions, DIE() expands to a return statement, so the next
902  * line is not necessary. But in versions between but not including
903  * 5.11.1 and 5.13.3 it does not, so the next line is necessary to avoid a
904  * "control reaches end of non-void function" warning from gcc. Other
905  * compilers such as Solaris Studio will, however, issue a "statement not
906  * reached" warning instead.
907  */
908  return NULL;
909 }
910 
911 
912 /*
913  * Destroy one Perl interpreter ... actually we just run END blocks.
914  *
915  * Caller must have ensured this interpreter is the active one.
916  */
917 static void
918 plperl_destroy_interp(PerlInterpreter **interp)
919 {
920  if (interp && *interp)
921  {
922  /*
923  * Only a very minimal destruction is performed: - just call END
924  * blocks.
925  *
926  * We could call perl_destruct() but we'd need to audit its actions
927  * very carefully and work-around any that impact us. (Calling
928  * sv_clean_objs() isn't an option because it's not part of perl's
929  * public API so isn't portably available.) Meanwhile END blocks can
930  * be used to perform manual cleanup.
931  */
932  dTHX;
933 
934  /* Run END blocks - based on perl's perl_destruct() */
935  if (PL_exit_flags & PERL_EXIT_DESTRUCT_END)
936  {
937  dJMPENV;
938  int x = 0;
939 
940  JMPENV_PUSH(x);
941  PERL_UNUSED_VAR(x);
942  if (PL_endav && !PL_minus_c)
943  call_list(PL_scopestack_ix, PL_endav);
944  JMPENV_POP;
945  }
946  LEAVE;
947  FREETMPS;
948 
949  *interp = NULL;
950  }
951 }
952 
953 /*
954  * Initialize the current Perl interpreter as a trusted interp
955  */
956 static void
958 {
959  dTHX;
960  HV *stash;
961  SV *sv;
962  char *key;
963  I32 klen;
964 
965  /* use original require while we set up */
966  PL_ppaddr[OP_REQUIRE] = pp_require_orig;
967  PL_ppaddr[OP_DOFILE] = pp_require_orig;
968 
969  eval_pv(PLC_TRUSTED, FALSE);
970  if (SvTRUE(ERRSV))
971  ereport(ERROR,
972  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
974  errcontext("while executing PLC_TRUSTED")));
975 
976  /*
977  * Force loading of utf8 module now to prevent errors that can arise from
978  * the regex code later trying to load utf8 modules. See
979  * http://rt.perl.org/rt3/Ticket/Display.html?id=47576
980  */
981  eval_pv("my $a=chr(0x100); return $a =~ /\\xa9/i", FALSE);
982  if (SvTRUE(ERRSV))
983  ereport(ERROR,
984  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
986  errcontext("while executing utf8fix")));
987 
988  /*
989  * Lock down the interpreter
990  */
991 
992  /* switch to the safe require/dofile opcode for future code */
993  PL_ppaddr[OP_REQUIRE] = pp_require_safe;
994  PL_ppaddr[OP_DOFILE] = pp_require_safe;
995 
996  /*
997  * prevent (any more) unsafe opcodes being compiled PL_op_mask is per
998  * interpreter, so this only needs to be set once
999  */
1000  PL_op_mask = plperl_opmask;
1001 
1002  /* delete the DynaLoader:: namespace so extensions can't be loaded */
1003  stash = gv_stashpv("DynaLoader", GV_ADDWARN);
1004  hv_iterinit(stash);
1005  while ((sv = hv_iternextsv(stash, &key, &klen)))
1006  {
1007  if (!isGV_with_GP(sv) || !GvCV(sv))
1008  continue;
1009  SvREFCNT_dec(GvCV(sv)); /* free the CV */
1010  GvCV_set(sv, NULL); /* prevent call via GV */
1011  }
1012  hv_clear(stash);
1013 
1014  /* invalidate assorted caches */
1015  ++PL_sub_generation;
1016  hv_clear(PL_stashcache);
1017 
1018  /*
1019  * Execute plperl.on_plperl_init in the locked-down interpreter
1020  */
1022  {
1023  eval_pv(plperl_on_plperl_init, FALSE);
1024  /* XXX need to find a way to determine a better errcode here */
1025  if (SvTRUE(ERRSV))
1026  ereport(ERROR,
1027  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
1029  errcontext("while executing plperl.on_plperl_init")));
1030  }
1031 }
1032 
1033 
1034 /*
1035  * Initialize the current Perl interpreter as an untrusted interp
1036  */
1037 static void
1039 {
1040  dTHX;
1041 
1042  /*
1043  * Nothing to do except execute plperl.on_plperlu_init
1044  */
1046  {
1047  eval_pv(plperl_on_plperlu_init, FALSE);
1048  if (SvTRUE(ERRSV))
1049  ereport(ERROR,
1050  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
1052  errcontext("while executing plperl.on_plperlu_init")));
1053  }
1054 }
1055 
1056 
1057 /*
1058  * Perl likes to put a newline after its error messages; clean up such
1059  */
1060 static char *
1061 strip_trailing_ws(const char *msg)
1062 {
1063  char *res = pstrdup(msg);
1064  int len = strlen(res);
1065 
1066  while (len > 0 && isspace((unsigned char) res[len - 1]))
1067  res[--len] = '\0';
1068  return res;
1069 }
1070 
1071 
1072 /* Build a tuple from a hash. */
1073 
1074 static HeapTuple
1076 {
1077  dTHX;
1078  Datum *values;
1079  bool *nulls;
1080  HE *he;
1081  HeapTuple tup;
1082 
1083  values = palloc0(sizeof(Datum) * td->natts);
1084  nulls = palloc(sizeof(bool) * td->natts);
1085  memset(nulls, true, sizeof(bool) * td->natts);
1086 
1087  hv_iterinit(perlhash);
1088  while ((he = hv_iternext(perlhash)))
1089  {
1090  SV *val = HeVAL(he);
1091  char *key = hek2cstr(he);
1092  int attn = SPI_fnumber(td, key);
1093  Form_pg_attribute attr = TupleDescAttr(td, attn - 1);
1094 
1095  if (attn == SPI_ERROR_NOATTRIBUTE)
1096  ereport(ERROR,
1097  (errcode(ERRCODE_UNDEFINED_COLUMN),
1098  errmsg("Perl hash contains nonexistent column \"%s\"",
1099  key)));
1100  if (attn <= 0)
1101  ereport(ERROR,
1102  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1103  errmsg("cannot set system attribute \"%s\"",
1104  key)));
1105 
1106  values[attn - 1] = plperl_sv_to_datum(val,
1107  attr->atttypid,
1108  attr->atttypmod,
1109  NULL,
1110  NULL,
1111  InvalidOid,
1112  &nulls[attn - 1]);
1113 
1114  pfree(key);
1115  }
1116  hv_iterinit(perlhash);
1117 
1118  tup = heap_form_tuple(td, values, nulls);
1119  pfree(values);
1120  pfree(nulls);
1121  return tup;
1122 }
1123 
1124 /* convert a hash reference to a datum */
1125 static Datum
1127 {
1128  HeapTuple tup = plperl_build_tuple_result((HV *) SvRV(src), td);
1129 
1130  return HeapTupleGetDatum(tup);
1131 }
1132 
1133 /*
1134  * if we are an array ref return the reference. this is special in that if we
1135  * are a PostgreSQL::InServer::ARRAY object we will return the 'magic' array.
1136  */
1137 static SV *
1139 {
1140  dTHX;
1141 
1142  if (SvOK(sv) && SvROK(sv))
1143  {
1144  if (SvTYPE(SvRV(sv)) == SVt_PVAV)
1145  return sv;
1146  else if (sv_isa(sv, "PostgreSQL::InServer::ARRAY"))
1147  {
1148  HV *hv = (HV *) SvRV(sv);
1149  SV **sav = hv_fetch_string(hv, "array");
1150 
1151  if (*sav && SvOK(*sav) && SvROK(*sav) &&
1152  SvTYPE(SvRV(*sav)) == SVt_PVAV)
1153  return *sav;
1154 
1155  elog(ERROR, "could not get array reference from PostgreSQL::InServer::ARRAY object");
1156  }
1157  }
1158  return NULL;
1159 }
1160 
1161 /*
1162  * helper function for plperl_array_to_datum, recurses for multi-D arrays
1163  */
1164 static void
1166  int *ndims, int *dims, int cur_depth,
1167  Oid arraytypid, Oid elemtypid, int32 typmod,
1168  FmgrInfo *finfo, Oid typioparam)
1169 {
1170  dTHX;
1171  int i;
1172  int len = av_len(av) + 1;
1173 
1174  for (i = 0; i < len; i++)
1175  {
1176  /* fetch the array element */
1177  SV **svp = av_fetch(av, i, FALSE);
1178 
1179  /* see if this element is an array, if so get that */
1180  SV *sav = svp ? get_perl_array_ref(*svp) : NULL;
1181 
1182  /* multi-dimensional array? */
1183  if (sav)
1184  {
1185  AV *nav = (AV *) SvRV(sav);
1186 
1187  /* dimensionality checks */
1188  if (cur_depth + 1 > MAXDIM)
1189  ereport(ERROR,
1190  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
1191  errmsg("number of array dimensions (%d) exceeds the maximum allowed (%d)",
1192  cur_depth + 1, MAXDIM)));
1193 
1194  /* set size when at first element in this level, else compare */
1195  if (i == 0 && *ndims == cur_depth)
1196  {
1197  dims[*ndims] = av_len(nav) + 1;
1198  (*ndims)++;
1199  }
1200  else if (av_len(nav) + 1 != dims[cur_depth])
1201  ereport(ERROR,
1202  (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
1203  errmsg("multidimensional arrays must have array expressions with matching dimensions")));
1204 
1205  /* recurse to fetch elements of this sub-array */
1206  array_to_datum_internal(nav, astate,
1207  ndims, dims, cur_depth + 1,
1208  arraytypid, elemtypid, typmod,
1209  finfo, typioparam);
1210  }
1211  else
1212  {
1213  Datum dat;
1214  bool isnull;
1215 
1216  /* scalar after some sub-arrays at same level? */
1217  if (*ndims != cur_depth)
1218  ereport(ERROR,
1219  (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
1220  errmsg("multidimensional arrays must have array expressions with matching dimensions")));
1221 
1222  dat = plperl_sv_to_datum(svp ? *svp : NULL,
1223  elemtypid,
1224  typmod,
1225  NULL,
1226  finfo,
1227  typioparam,
1228  &isnull);
1229 
1230  (void) accumArrayResult(astate, dat, isnull,
1231  elemtypid, CurrentMemoryContext);
1232  }
1233  }
1234 }
1235 
1236 /*
1237  * convert perl array ref to a datum
1238  */
1239 static Datum
1240 plperl_array_to_datum(SV *src, Oid typid, int32 typmod)
1241 {
1242  dTHX;
1243  ArrayBuildState *astate;
1244  Oid elemtypid;
1245  FmgrInfo finfo;
1246  Oid typioparam;
1247  int dims[MAXDIM];
1248  int lbs[MAXDIM];
1249  int ndims = 1;
1250  int i;
1251 
1252  elemtypid = get_element_type(typid);
1253  if (!elemtypid)
1254  ereport(ERROR,
1255  (errcode(ERRCODE_DATATYPE_MISMATCH),
1256  errmsg("cannot convert Perl array to non-array type %s",
1257  format_type_be(typid))));
1258 
1259  astate = initArrayResult(elemtypid, CurrentMemoryContext, true);
1260 
1261  _sv_to_datum_finfo(elemtypid, &finfo, &typioparam);
1262 
1263  memset(dims, 0, sizeof(dims));
1264  dims[0] = av_len((AV *) SvRV(src)) + 1;
1265 
1266  array_to_datum_internal((AV *) SvRV(src), astate,
1267  &ndims, dims, 1,
1268  typid, elemtypid, typmod,
1269  &finfo, typioparam);
1270 
1271  /* ensure we get zero-D array for no inputs, as per PG convention */
1272  if (dims[0] <= 0)
1273  ndims = 0;
1274 
1275  for (i = 0; i < ndims; i++)
1276  lbs[i] = 1;
1277 
1278  return makeMdArrayResult(astate, ndims, dims, lbs,
1279  CurrentMemoryContext, true);
1280 }
1281 
1282 /* Get the information needed to convert data to the specified PG type */
1283 static void
1284 _sv_to_datum_finfo(Oid typid, FmgrInfo *finfo, Oid *typioparam)
1285 {
1286  Oid typinput;
1287 
1288  /* XXX would be better to cache these lookups */
1289  getTypeInputInfo(typid,
1290  &typinput, typioparam);
1291  fmgr_info(typinput, finfo);
1292 }
1293 
1294 /*
1295  * convert Perl SV to PG datum of type typid, typmod typmod
1296  *
1297  * Pass the PL/Perl function's fcinfo when attempting to convert to the
1298  * function's result type; otherwise pass NULL. This is used when we need to
1299  * resolve the actual result type of a function returning RECORD.
1300  *
1301  * finfo and typioparam should be the results of _sv_to_datum_finfo for the
1302  * given typid, or NULL/InvalidOid to let this function do the lookups.
1303  *
1304  * *isnull is an output parameter.
1305  */
1306 static Datum
1307 plperl_sv_to_datum(SV *sv, Oid typid, int32 typmod,
1308  FunctionCallInfo fcinfo,
1309  FmgrInfo *finfo, Oid typioparam,
1310  bool *isnull)
1311 {
1312  FmgrInfo tmp;
1313  Oid funcid;
1314 
1315  /* we might recurse */
1317 
1318  *isnull = false;
1319 
1320  /*
1321  * Return NULL if result is undef, or if we're in a function returning
1322  * VOID. In the latter case, we should pay no attention to the last Perl
1323  * statement's result, and this is a convenient means to ensure that.
1324  */
1325  if (!sv || !SvOK(sv) || typid == VOIDOID)
1326  {
1327  /* look up type info if they did not pass it */
1328  if (!finfo)
1329  {
1330  _sv_to_datum_finfo(typid, &tmp, &typioparam);
1331  finfo = &tmp;
1332  }
1333  *isnull = true;
1334  /* must call typinput in case it wants to reject NULL */
1335  return InputFunctionCall(finfo, NULL, typioparam, typmod);
1336  }
1337  else if ((funcid = get_transform_tosql(typid, current_call_data->prodesc->lang_oid, current_call_data->prodesc->trftypes)))
1338  return OidFunctionCall1(funcid, PointerGetDatum(sv));
1339  else if (SvROK(sv))
1340  {
1341  /* handle references */
1342  SV *sav = get_perl_array_ref(sv);
1343 
1344  if (sav)
1345  {
1346  /* handle an arrayref */
1347  return plperl_array_to_datum(sav, typid, typmod);
1348  }
1349  else if (SvTYPE(SvRV(sv)) == SVt_PVHV)
1350  {
1351  /* handle a hashref */
1352  Datum ret;
1353  TupleDesc td;
1354  bool isdomain;
1355 
1356  if (!type_is_rowtype(typid))
1357  ereport(ERROR,
1358  (errcode(ERRCODE_DATATYPE_MISMATCH),
1359  errmsg("cannot convert Perl hash to non-composite type %s",
1360  format_type_be(typid))));
1361 
1362  td = lookup_rowtype_tupdesc_domain(typid, typmod, true);
1363  if (td != NULL)
1364  {
1365  /* Did we look through a domain? */
1366  isdomain = (typid != td->tdtypeid);
1367  }
1368  else
1369  {
1370  /* Must be RECORD, try to resolve based on call info */
1371  TypeFuncClass funcclass;
1372 
1373  if (fcinfo)
1374  funcclass = get_call_result_type(fcinfo, &typid, &td);
1375  else
1376  funcclass = TYPEFUNC_OTHER;
1377  if (funcclass != TYPEFUNC_COMPOSITE &&
1378  funcclass != TYPEFUNC_COMPOSITE_DOMAIN)
1379  ereport(ERROR,
1380  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1381  errmsg("function returning record called in context "
1382  "that cannot accept type record")));
1383  Assert(td);
1384  isdomain = (funcclass == TYPEFUNC_COMPOSITE_DOMAIN);
1385  }
1386 
1387  ret = plperl_hash_to_datum(sv, td);
1388 
1389  if (isdomain)
1390  domain_check(ret, false, typid, NULL, NULL);
1391 
1392  /* Release on the result of get_call_result_type is harmless */
1393  ReleaseTupleDesc(td);
1394 
1395  return ret;
1396  }
1397 
1398  /*
1399  * If it's a reference to something else, such as a scalar, just
1400  * recursively look through the reference.
1401  */
1402  return plperl_sv_to_datum(SvRV(sv), typid, typmod,
1403  fcinfo, finfo, typioparam,
1404  isnull);
1405  }
1406  else
1407  {
1408  /* handle a string/number */
1409  Datum ret;
1410  char *str = sv2cstr(sv);
1411 
1412  /* did not pass in any typeinfo? look it up */
1413  if (!finfo)
1414  {
1415  _sv_to_datum_finfo(typid, &tmp, &typioparam);
1416  finfo = &tmp;
1417  }
1418 
1419  ret = InputFunctionCall(finfo, str, typioparam, typmod);
1420  pfree(str);
1421 
1422  return ret;
1423  }
1424 }
1425 
1426 /* Convert the perl SV to a string returned by the type output function */
1427 char *
1428 plperl_sv_to_literal(SV *sv, char *fqtypename)
1429 {
1430  Datum str = CStringGetDatum(fqtypename);
1431  Oid typid = DirectFunctionCall1(regtypein, str);
1432  Oid typoutput;
1433  Datum datum;
1434  bool typisvarlena,
1435  isnull;
1436 
1437  if (!OidIsValid(typid))
1438  ereport(ERROR,
1439  (errcode(ERRCODE_UNDEFINED_OBJECT),
1440  errmsg("lookup failed for type %s", fqtypename)));
1441 
1442  datum = plperl_sv_to_datum(sv,
1443  typid, -1,
1444  NULL, NULL, InvalidOid,
1445  &isnull);
1446 
1447  if (isnull)
1448  return NULL;
1449 
1450  getTypeOutputInfo(typid,
1451  &typoutput, &typisvarlena);
1452 
1453  return OidOutputFunctionCall(typoutput, datum);
1454 }
1455 
1456 /*
1457  * Convert PostgreSQL array datum to a perl array reference.
1458  *
1459  * typid is arg's OID, which must be an array type.
1460  */
1461 static SV *
1463 {
1464  dTHX;
1465  ArrayType *ar = DatumGetArrayTypeP(arg);
1466  Oid elementtype = ARR_ELEMTYPE(ar);
1467  int16 typlen;
1468  bool typbyval;
1469  char typalign,
1470  typdelim;
1471  Oid typioparam;
1472  Oid typoutputfunc;
1473  Oid transform_funcid;
1474  int i,
1475  nitems,
1476  *dims;
1477  plperl_array_info *info;
1478  SV *av;
1479  HV *hv;
1480 
1481  /*
1482  * Currently we make no effort to cache any of the stuff we look up here,
1483  * which is bad.
1484  */
1485  info = palloc0(sizeof(plperl_array_info));
1486 
1487  /* get element type information, including output conversion function */
1488  get_type_io_data(elementtype, IOFunc_output,
1489  &typlen, &typbyval, &typalign,
1490  &typdelim, &typioparam, &typoutputfunc);
1491 
1492  /* Check for a transform function */
1493  transform_funcid = get_transform_fromsql(elementtype,
1494  current_call_data->prodesc->lang_oid,
1495  current_call_data->prodesc->trftypes);
1496 
1497  /* Look up transform or output function as appropriate */
1498  if (OidIsValid(transform_funcid))
1499  fmgr_info(transform_funcid, &info->transform_proc);
1500  else
1501  fmgr_info(typoutputfunc, &info->proc);
1502 
1503  info->elem_is_rowtype = type_is_rowtype(elementtype);
1504 
1505  /* Get the number and bounds of array dimensions */
1506  info->ndims = ARR_NDIM(ar);
1507  dims = ARR_DIMS(ar);
1508 
1509  /* No dimensions? Return an empty array */
1510  if (info->ndims == 0)
1511  {
1512  av = newRV_noinc((SV *) newAV());
1513  }
1514  else
1515  {
1516  deconstruct_array(ar, elementtype, typlen, typbyval,
1517  typalign, &info->elements, &info->nulls,
1518  &nitems);
1519 
1520  /* Get total number of elements in each dimension */
1521  info->nelems = palloc(sizeof(int) * info->ndims);
1522  info->nelems[0] = nitems;
1523  for (i = 1; i < info->ndims; i++)
1524  info->nelems[i] = info->nelems[i - 1] / dims[i - 1];
1525 
1526  av = split_array(info, 0, nitems, 0);
1527  }
1528 
1529  hv = newHV();
1530  (void) hv_store(hv, "array", 5, av, 0);
1531  (void) hv_store(hv, "typeoid", 7, newSVuv(typid), 0);
1532 
1533  return sv_bless(newRV_noinc((SV *) hv),
1534  gv_stashpv("PostgreSQL::InServer::ARRAY", 0));
1535 }
1536 
1537 /*
1538  * Recursively form array references from splices of the initial array
1539  */
1540 static SV *
1541 split_array(plperl_array_info *info, int first, int last, int nest)
1542 {
1543  dTHX;
1544  int i;
1545  AV *result;
1546 
1547  /* we should only be called when we have something to split */
1548  Assert(info->ndims > 0);
1549 
1550  /* since this function recurses, it could be driven to stack overflow */
1552 
1553  /*
1554  * Base case, return a reference to a single-dimensional array
1555  */
1556  if (nest >= info->ndims - 1)
1557  return make_array_ref(info, first, last);
1558 
1559  result = newAV();
1560  for (i = first; i < last; i += info->nelems[nest + 1])
1561  {
1562  /* Recursively form references to arrays of lower dimensions */
1563  SV *ref = split_array(info, i, i + info->nelems[nest + 1], nest + 1);
1564 
1565  av_push(result, ref);
1566  }
1567  return newRV_noinc((SV *) result);
1568 }
1569 
1570 /*
1571  * Create a Perl reference from a one-dimensional C array, converting
1572  * composite type elements to hash references.
1573  */
1574 static SV *
1575 make_array_ref(plperl_array_info *info, int first, int last)
1576 {
1577  dTHX;
1578  int i;
1579  AV *result = newAV();
1580 
1581  for (i = first; i < last; i++)
1582  {
1583  if (info->nulls[i])
1584  {
1585  /*
1586  * We can't use &PL_sv_undef here. See "AVs, HVs and undefined
1587  * values" in perlguts.
1588  */
1589  av_push(result, newSV(0));
1590  }
1591  else
1592  {
1593  Datum itemvalue = info->elements[i];
1594 
1595  if (info->transform_proc.fn_oid)
1596  av_push(result, (SV *) DatumGetPointer(FunctionCall1(&info->transform_proc, itemvalue)));
1597  else if (info->elem_is_rowtype)
1598  /* Handle composite type elements */
1599  av_push(result, plperl_hash_from_datum(itemvalue));
1600  else
1601  {
1602  char *val = OutputFunctionCall(&info->proc, itemvalue);
1603 
1604  av_push(result, cstr2sv(val));
1605  }
1606  }
1607  }
1608  return newRV_noinc((SV *) result);
1609 }
1610 
1611 /* Set up the arguments for a trigger call. */
1612 static SV *
1614 {
1615  dTHX;
1616  TriggerData *tdata;
1617  TupleDesc tupdesc;
1618  int i;
1619  char *level;
1620  char *event;
1621  char *relid;
1622  char *when;
1623  HV *hv;
1624 
1625  hv = newHV();
1626  hv_ksplit(hv, 12); /* pre-grow the hash */
1627 
1628  tdata = (TriggerData *) fcinfo->context;
1629  tupdesc = tdata->tg_relation->rd_att;
1630 
1632  ObjectIdGetDatum(tdata->tg_relation->rd_id)));
1633 
1634  hv_store_string(hv, "name", cstr2sv(tdata->tg_trigger->tgname));
1635  hv_store_string(hv, "relid", cstr2sv(relid));
1636 
1637  /*
1638  * Note: In BEFORE trigger, stored generated columns are not computed yet,
1639  * so don't make them accessible in NEW row.
1640  */
1641 
1642  if (TRIGGER_FIRED_BY_INSERT(tdata->tg_event))
1643  {
1644  event = "INSERT";
1645  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1646  hv_store_string(hv, "new",
1648  tupdesc,
1649  !TRIGGER_FIRED_BEFORE(tdata->tg_event)));
1650  }
1651  else if (TRIGGER_FIRED_BY_DELETE(tdata->tg_event))
1652  {
1653  event = "DELETE";
1654  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1655  hv_store_string(hv, "old",
1657  tupdesc,
1658  true));
1659  }
1660  else if (TRIGGER_FIRED_BY_UPDATE(tdata->tg_event))
1661  {
1662  event = "UPDATE";
1663  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1664  {
1665  hv_store_string(hv, "old",
1667  tupdesc,
1668  true));
1669  hv_store_string(hv, "new",
1671  tupdesc,
1672  !TRIGGER_FIRED_BEFORE(tdata->tg_event)));
1673  }
1674  }
1675  else if (TRIGGER_FIRED_BY_TRUNCATE(tdata->tg_event))
1676  event = "TRUNCATE";
1677  else
1678  event = "UNKNOWN";
1679 
1680  hv_store_string(hv, "event", cstr2sv(event));
1681  hv_store_string(hv, "argc", newSViv(tdata->tg_trigger->tgnargs));
1682 
1683  if (tdata->tg_trigger->tgnargs > 0)
1684  {
1685  AV *av = newAV();
1686 
1687  av_extend(av, tdata->tg_trigger->tgnargs);
1688  for (i = 0; i < tdata->tg_trigger->tgnargs; i++)
1689  av_push(av, cstr2sv(tdata->tg_trigger->tgargs[i]));
1690  hv_store_string(hv, "args", newRV_noinc((SV *) av));
1691  }
1692 
1693  hv_store_string(hv, "relname",
1695 
1696  hv_store_string(hv, "table_name",
1698 
1699  hv_store_string(hv, "table_schema",
1701 
1702  if (TRIGGER_FIRED_BEFORE(tdata->tg_event))
1703  when = "BEFORE";
1704  else if (TRIGGER_FIRED_AFTER(tdata->tg_event))
1705  when = "AFTER";
1706  else if (TRIGGER_FIRED_INSTEAD(tdata->tg_event))
1707  when = "INSTEAD OF";
1708  else
1709  when = "UNKNOWN";
1710  hv_store_string(hv, "when", cstr2sv(when));
1711 
1712  if (TRIGGER_FIRED_FOR_ROW(tdata->tg_event))
1713  level = "ROW";
1714  else if (TRIGGER_FIRED_FOR_STATEMENT(tdata->tg_event))
1715  level = "STATEMENT";
1716  else
1717  level = "UNKNOWN";
1718  hv_store_string(hv, "level", cstr2sv(level));
1719 
1720  return newRV_noinc((SV *) hv);
1721 }
1722 
1723 
1724 /* Set up the arguments for an event trigger call. */
1725 static SV *
1727 {
1728  dTHX;
1729  EventTriggerData *tdata;
1730  HV *hv;
1731 
1732  hv = newHV();
1733 
1734  tdata = (EventTriggerData *) fcinfo->context;
1735 
1736  hv_store_string(hv, "event", cstr2sv(tdata->event));
1737  hv_store_string(hv, "tag", cstr2sv(GetCommandTagName(tdata->tag)));
1738 
1739  return newRV_noinc((SV *) hv);
1740 }
1741 
1742 /* Construct the modified new tuple to be returned from a trigger. */
1743 static HeapTuple
1745 {
1746  dTHX;
1747  SV **svp;
1748  HV *hvNew;
1749  HE *he;
1750  HeapTuple rtup;
1751  TupleDesc tupdesc;
1752  int natts;
1753  Datum *modvalues;
1754  bool *modnulls;
1755  bool *modrepls;
1756 
1757  svp = hv_fetch_string(hvTD, "new");
1758  if (!svp)
1759  ereport(ERROR,
1760  (errcode(ERRCODE_UNDEFINED_COLUMN),
1761  errmsg("$_TD->{new} does not exist")));
1762  if (!SvOK(*svp) || !SvROK(*svp) || SvTYPE(SvRV(*svp)) != SVt_PVHV)
1763  ereport(ERROR,
1764  (errcode(ERRCODE_DATATYPE_MISMATCH),
1765  errmsg("$_TD->{new} is not a hash reference")));
1766  hvNew = (HV *) SvRV(*svp);
1767 
1768  tupdesc = tdata->tg_relation->rd_att;
1769  natts = tupdesc->natts;
1770 
1771  modvalues = (Datum *) palloc0(natts * sizeof(Datum));
1772  modnulls = (bool *) palloc0(natts * sizeof(bool));
1773  modrepls = (bool *) palloc0(natts * sizeof(bool));
1774 
1775  hv_iterinit(hvNew);
1776  while ((he = hv_iternext(hvNew)))
1777  {
1778  char *key = hek2cstr(he);
1779  SV *val = HeVAL(he);
1780  int attn = SPI_fnumber(tupdesc, key);
1781  Form_pg_attribute attr = TupleDescAttr(tupdesc, attn - 1);
1782 
1783  if (attn == SPI_ERROR_NOATTRIBUTE)
1784  ereport(ERROR,
1785  (errcode(ERRCODE_UNDEFINED_COLUMN),
1786  errmsg("Perl hash contains nonexistent column \"%s\"",
1787  key)));
1788  if (attn <= 0)
1789  ereport(ERROR,
1790  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1791  errmsg("cannot set system attribute \"%s\"",
1792  key)));
1793  if (attr->attgenerated)
1794  ereport(ERROR,
1795  (errcode(ERRCODE_E_R_I_E_TRIGGER_PROTOCOL_VIOLATED),
1796  errmsg("cannot set generated column \"%s\"",
1797  key)));
1798 
1799  modvalues[attn - 1] = plperl_sv_to_datum(val,
1800  attr->atttypid,
1801  attr->atttypmod,
1802  NULL,
1803  NULL,
1804  InvalidOid,
1805  &modnulls[attn - 1]);
1806  modrepls[attn - 1] = true;
1807 
1808  pfree(key);
1809  }
1810  hv_iterinit(hvNew);
1811 
1812  rtup = heap_modify_tuple(otup, tupdesc, modvalues, modnulls, modrepls);
1813 
1814  pfree(modvalues);
1815  pfree(modnulls);
1816  pfree(modrepls);
1817 
1818  return rtup;
1819 }
1820 
1821 
1822 /*
1823  * There are three externally visible pieces to plperl: plperl_call_handler,
1824  * plperl_inline_handler, and plperl_validator.
1825  */
1826 
1827 /*
1828  * The call handler is called to run normal functions (including trigger
1829  * functions) that are defined in pg_proc.
1830  */
1832 
1833 Datum
1835 {
1836  Datum retval = (Datum) 0;
1837  plperl_call_data *volatile save_call_data = current_call_data;
1838  plperl_interp_desc *volatile oldinterp = plperl_active_interp;
1839  plperl_call_data this_call_data;
1840 
1841  /* Initialize current-call status record */
1842  MemSet(&this_call_data, 0, sizeof(this_call_data));
1843  this_call_data.fcinfo = fcinfo;
1844 
1845  PG_TRY();
1846  {
1847  current_call_data = &this_call_data;
1848  if (CALLED_AS_TRIGGER(fcinfo))
1849  retval = PointerGetDatum(plperl_trigger_handler(fcinfo));
1850  else if (CALLED_AS_EVENT_TRIGGER(fcinfo))
1851  {
1853  retval = (Datum) 0;
1854  }
1855  else
1856  retval = plperl_func_handler(fcinfo);
1857  }
1858  PG_FINALLY();
1859  {
1860  current_call_data = save_call_data;
1861  activate_interpreter(oldinterp);
1862  if (this_call_data.prodesc)
1863  decrement_prodesc_refcount(this_call_data.prodesc);
1864  }
1865  PG_END_TRY();
1866 
1867  return retval;
1868 }
1869 
1870 /*
1871  * The inline handler runs anonymous code blocks (DO blocks).
1872  */
1874 
1875 Datum
1877 {
1878  LOCAL_FCINFO(fake_fcinfo, 0);
1880  FmgrInfo flinfo;
1881  plperl_proc_desc desc;
1882  plperl_call_data *volatile save_call_data = current_call_data;
1883  plperl_interp_desc *volatile oldinterp = plperl_active_interp;
1884  plperl_call_data this_call_data;
1885  ErrorContextCallback pl_error_context;
1886 
1887  /* Initialize current-call status record */
1888  MemSet(&this_call_data, 0, sizeof(this_call_data));
1889 
1890  /* Set up a callback for error reporting */
1891  pl_error_context.callback = plperl_inline_callback;
1892  pl_error_context.previous = error_context_stack;
1893  pl_error_context.arg = NULL;
1894  error_context_stack = &pl_error_context;
1895 
1896  /*
1897  * Set up a fake fcinfo and descriptor with just enough info to satisfy
1898  * plperl_call_perl_func(). In particular note that this sets things up
1899  * with no arguments passed, and a result type of VOID.
1900  */
1901  MemSet(fake_fcinfo, 0, SizeForFunctionCallInfo(0));
1902  MemSet(&flinfo, 0, sizeof(flinfo));
1903  MemSet(&desc, 0, sizeof(desc));
1904  fake_fcinfo->flinfo = &flinfo;
1905  flinfo.fn_oid = InvalidOid;
1906  flinfo.fn_mcxt = CurrentMemoryContext;
1907 
1908  desc.proname = "inline_code_block";
1909  desc.fn_readonly = false;
1910 
1911  desc.lang_oid = codeblock->langOid;
1912  desc.trftypes = NIL;
1913  desc.lanpltrusted = codeblock->langIsTrusted;
1914 
1915  desc.fn_retistuple = false;
1916  desc.fn_retisset = false;
1917  desc.fn_retisarray = false;
1918  desc.result_oid = InvalidOid;
1919  desc.nargs = 0;
1920  desc.reference = NULL;
1921 
1922  this_call_data.fcinfo = fake_fcinfo;
1923  this_call_data.prodesc = &desc;
1924  /* we do not bother with refcounting the fake prodesc */
1925 
1926  PG_TRY();
1927  {
1928  SV *perlret;
1929 
1930  current_call_data = &this_call_data;
1931 
1932  if (SPI_connect_ext(codeblock->atomic ? 0 : SPI_OPT_NONATOMIC) != SPI_OK_CONNECT)
1933  elog(ERROR, "could not connect to SPI manager");
1934 
1936 
1937  plperl_create_sub(&desc, codeblock->source_text, 0);
1938 
1939  if (!desc.reference) /* can this happen? */
1940  elog(ERROR, "could not create internal procedure for anonymous code block");
1941 
1942  perlret = plperl_call_perl_func(&desc, fake_fcinfo);
1943 
1944  SvREFCNT_dec_current(perlret);
1945 
1946  if (SPI_finish() != SPI_OK_FINISH)
1947  elog(ERROR, "SPI_finish() failed");
1948  }
1949  PG_FINALLY();
1950  {
1951  if (desc.reference)
1953  current_call_data = save_call_data;
1954  activate_interpreter(oldinterp);
1955  }
1956  PG_END_TRY();
1957 
1958  error_context_stack = pl_error_context.previous;
1959 
1960  PG_RETURN_VOID();
1961 }
1962 
1963 /*
1964  * The validator is called during CREATE FUNCTION to validate the function
1965  * being created/replaced. The precise behavior of the validator may be
1966  * modified by the check_function_bodies GUC.
1967  */
1969 
1970 Datum
1972 {
1973  Oid funcoid = PG_GETARG_OID(0);
1974  HeapTuple tuple;
1975  Form_pg_proc proc;
1976  char functyptype;
1977  int numargs;
1978  Oid *argtypes;
1979  char **argnames;
1980  char *argmodes;
1981  bool is_trigger = false;
1982  bool is_event_trigger = false;
1983  int i;
1984 
1985  if (!CheckFunctionValidatorAccess(fcinfo->flinfo->fn_oid, funcoid))
1986  PG_RETURN_VOID();
1987 
1988  /* Get the new function's pg_proc entry */
1989  tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcoid));
1990  if (!HeapTupleIsValid(tuple))
1991  elog(ERROR, "cache lookup failed for function %u", funcoid);
1992  proc = (Form_pg_proc) GETSTRUCT(tuple);
1993 
1994  functyptype = get_typtype(proc->prorettype);
1995 
1996  /* Disallow pseudotype result */
1997  /* except for TRIGGER, EVTTRIGGER, RECORD, or VOID */
1998  if (functyptype == TYPTYPE_PSEUDO)
1999  {
2000  if (proc->prorettype == TRIGGEROID)
2001  is_trigger = true;
2002  else if (proc->prorettype == EVENT_TRIGGEROID)
2003  is_event_trigger = true;
2004  else if (proc->prorettype != RECORDOID &&
2005  proc->prorettype != VOIDOID)
2006  ereport(ERROR,
2007  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2008  errmsg("PL/Perl functions cannot return type %s",
2009  format_type_be(proc->prorettype))));
2010  }
2011 
2012  /* Disallow pseudotypes in arguments (either IN or OUT) */
2013  numargs = get_func_arg_info(tuple,
2014  &argtypes, &argnames, &argmodes);
2015  for (i = 0; i < numargs; i++)
2016  {
2017  if (get_typtype(argtypes[i]) == TYPTYPE_PSEUDO &&
2018  argtypes[i] != RECORDOID)
2019  ereport(ERROR,
2020  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2021  errmsg("PL/Perl functions cannot accept type %s",
2022  format_type_be(argtypes[i]))));
2023  }
2024 
2025  ReleaseSysCache(tuple);
2026 
2027  /* Postpone body checks if !check_function_bodies */
2029  {
2030  (void) compile_plperl_function(funcoid, is_trigger, is_event_trigger);
2031  }
2032 
2033  /* the result of a validator is ignored */
2034  PG_RETURN_VOID();
2035 }
2036 
2037 
2038 /*
2039  * plperlu likewise requires three externally visible functions:
2040  * plperlu_call_handler, plperlu_inline_handler, and plperlu_validator.
2041  * These are currently just aliases that send control to the plperl
2042  * handler functions, and we decide whether a particular function is
2043  * trusted or not by inspecting the actual pg_language tuple.
2044  */
2045 
2047 
2048 Datum
2050 {
2051  return plperl_call_handler(fcinfo);
2052 }
2053 
2055 
2056 Datum
2058 {
2059  return plperl_inline_handler(fcinfo);
2060 }
2061 
2063 
2064 Datum
2066 {
2067  /* call plperl validator with our fcinfo so it gets our oid */
2068  return plperl_validator(fcinfo);
2069 }
2070 
2071 
2072 /*
2073  * Uses mkfunc to create a subroutine whose text is
2074  * supplied in s, and returns a reference to it
2075  */
2076 static void
2077 plperl_create_sub(plperl_proc_desc *prodesc, const char *s, Oid fn_oid)
2078 {
2079  dTHX;
2080  dSP;
2081  char subname[NAMEDATALEN + 40];
2082  HV *pragma_hv = newHV();
2083  SV *subref = NULL;
2084  int count;
2085 
2086  sprintf(subname, "%s__%u", prodesc->proname, fn_oid);
2087 
2088  if (plperl_use_strict)
2089  hv_store_string(pragma_hv, "strict", (SV *) newAV());
2090 
2091  ENTER;
2092  SAVETMPS;
2093  PUSHMARK(SP);
2094  EXTEND(SP, 4);
2095  PUSHs(sv_2mortal(cstr2sv(subname)));
2096  PUSHs(sv_2mortal(newRV_noinc((SV *) pragma_hv)));
2097 
2098  /*
2099  * Use 'false' for $prolog in mkfunc, which is kept for compatibility in
2100  * case a module such as PostgreSQL::PLPerl::NYTprof replaces the function
2101  * compiler.
2102  */
2103  PUSHs(&PL_sv_no);
2104  PUSHs(sv_2mortal(cstr2sv(s)));
2105  PUTBACK;
2106 
2107  /*
2108  * G_KEEPERR seems to be needed here, else we don't recognize compile
2109  * errors properly. Perhaps it's because there's another level of eval
2110  * inside mksafefunc?
2111  */
2112  count = call_pv("PostgreSQL::InServer::mkfunc",
2113  G_SCALAR | G_EVAL | G_KEEPERR);
2114  SPAGAIN;
2115 
2116  if (count == 1)
2117  {
2118  SV *sub_rv = (SV *) POPs;
2119 
2120  if (sub_rv && SvROK(sub_rv) && SvTYPE(SvRV(sub_rv)) == SVt_PVCV)
2121  {
2122  subref = newRV_inc(SvRV(sub_rv));
2123  }
2124  }
2125 
2126  PUTBACK;
2127  FREETMPS;
2128  LEAVE;
2129 
2130  if (SvTRUE(ERRSV))
2131  ereport(ERROR,
2132  (errcode(ERRCODE_SYNTAX_ERROR),
2134 
2135  if (!subref)
2136  ereport(ERROR,
2137  (errcode(ERRCODE_SYNTAX_ERROR),
2138  errmsg("didn't get a CODE reference from compiling function \"%s\"",
2139  prodesc->proname)));
2140 
2141  prodesc->reference = subref;
2142 }
2143 
2144 
2145 /**********************************************************************
2146  * plperl_init_shared_libs() -
2147  **********************************************************************/
2148 
2149 static void
2151 {
2152  char *file = __FILE__;
2153 
2154  newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
2155  newXS("PostgreSQL::InServer::Util::bootstrap",
2157  /* newXS for...::SPI::bootstrap is in select_perl_context() */
2158 }
2159 
2160 
2161 static SV *
2163 {
2164  dTHX;
2165  dSP;
2166  SV *retval;
2167  int i;
2168  int count;
2169  Oid *argtypes = NULL;
2170  int nargs = 0;
2171 
2172  ENTER;
2173  SAVETMPS;
2174 
2175  PUSHMARK(SP);
2176  EXTEND(sp, desc->nargs);
2177 
2178  /* Get signature for true functions; inline blocks have no args. */
2179  if (fcinfo->flinfo->fn_oid)
2180  get_func_signature(fcinfo->flinfo->fn_oid, &argtypes, &nargs);
2181  Assert(nargs == desc->nargs);
2182 
2183  for (i = 0; i < desc->nargs; i++)
2184  {
2185  if (fcinfo->args[i].isnull)
2186  PUSHs(&PL_sv_undef);
2187  else if (desc->arg_is_rowtype[i])
2188  {
2189  SV *sv = plperl_hash_from_datum(fcinfo->args[i].value);
2190 
2191  PUSHs(sv_2mortal(sv));
2192  }
2193  else
2194  {
2195  SV *sv;
2196  Oid funcid;
2197 
2198  if (OidIsValid(desc->arg_arraytype[i]))
2199  sv = plperl_ref_from_pg_array(fcinfo->args[i].value, desc->arg_arraytype[i]);
2200  else if ((funcid = get_transform_fromsql(argtypes[i], current_call_data->prodesc->lang_oid, current_call_data->prodesc->trftypes)))
2201  sv = (SV *) DatumGetPointer(OidFunctionCall1(funcid, fcinfo->args[i].value));
2202  else
2203  {
2204  char *tmp;
2205 
2206  tmp = OutputFunctionCall(&(desc->arg_out_func[i]),
2207  fcinfo->args[i].value);
2208  sv = cstr2sv(tmp);
2209  pfree(tmp);
2210  }
2211 
2212  PUSHs(sv_2mortal(sv));
2213  }
2214  }
2215  PUTBACK;
2216 
2217  /* Do NOT use G_KEEPERR here */
2218  count = call_sv(desc->reference, G_SCALAR | G_EVAL);
2219 
2220  SPAGAIN;
2221 
2222  if (count != 1)
2223  {
2224  PUTBACK;
2225  FREETMPS;
2226  LEAVE;
2227  ereport(ERROR,
2228  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2229  errmsg("didn't get a return item from function")));
2230  }
2231 
2232  if (SvTRUE(ERRSV))
2233  {
2234  (void) POPs;
2235  PUTBACK;
2236  FREETMPS;
2237  LEAVE;
2238  /* XXX need to find a way to determine a better errcode here */
2239  ereport(ERROR,
2240  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2242  }
2243 
2244  retval = newSVsv(POPs);
2245 
2246  PUTBACK;
2247  FREETMPS;
2248  LEAVE;
2249 
2250  return retval;
2251 }
2252 
2253 
2254 static SV *
2256  SV *td)
2257 {
2258  dTHX;
2259  dSP;
2260  SV *retval,
2261  *TDsv;
2262  int i,
2263  count;
2264  Trigger *tg_trigger = ((TriggerData *) fcinfo->context)->tg_trigger;
2265 
2266  ENTER;
2267  SAVETMPS;
2268 
2269  TDsv = get_sv("main::_TD", 0);
2270  if (!TDsv)
2271  ereport(ERROR,
2272  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2273  errmsg("couldn't fetch $_TD")));
2274 
2275  save_item(TDsv); /* local $_TD */
2276  sv_setsv(TDsv, td);
2277 
2278  PUSHMARK(sp);
2279  EXTEND(sp, tg_trigger->tgnargs);
2280 
2281  for (i = 0; i < tg_trigger->tgnargs; i++)
2282  PUSHs(sv_2mortal(cstr2sv(tg_trigger->tgargs[i])));
2283  PUTBACK;
2284 
2285  /* Do NOT use G_KEEPERR here */
2286  count = call_sv(desc->reference, G_SCALAR | G_EVAL);
2287 
2288  SPAGAIN;
2289 
2290  if (count != 1)
2291  {
2292  PUTBACK;
2293  FREETMPS;
2294  LEAVE;
2295  ereport(ERROR,
2296  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2297  errmsg("didn't get a return item from trigger function")));
2298  }
2299 
2300  if (SvTRUE(ERRSV))
2301  {
2302  (void) POPs;
2303  PUTBACK;
2304  FREETMPS;
2305  LEAVE;
2306  /* XXX need to find a way to determine a better errcode here */
2307  ereport(ERROR,
2308  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2310  }
2311 
2312  retval = newSVsv(POPs);
2313 
2314  PUTBACK;
2315  FREETMPS;
2316  LEAVE;
2317 
2318  return retval;
2319 }
2320 
2321 
2322 static void
2324  FunctionCallInfo fcinfo,
2325  SV *td)
2326 {
2327  dTHX;
2328  dSP;
2329  SV *retval,
2330  *TDsv;
2331  int count;
2332 
2333  ENTER;
2334  SAVETMPS;
2335 
2336  TDsv = get_sv("main::_TD", 0);
2337  if (!TDsv)
2338  ereport(ERROR,
2339  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2340  errmsg("couldn't fetch $_TD")));
2341 
2342  save_item(TDsv); /* local $_TD */
2343  sv_setsv(TDsv, td);
2344 
2345  PUSHMARK(sp);
2346  PUTBACK;
2347 
2348  /* Do NOT use G_KEEPERR here */
2349  count = call_sv(desc->reference, G_SCALAR | G_EVAL);
2350 
2351  SPAGAIN;
2352 
2353  if (count != 1)
2354  {
2355  PUTBACK;
2356  FREETMPS;
2357  LEAVE;
2358  ereport(ERROR,
2359  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2360  errmsg("didn't get a return item from trigger function")));
2361  }
2362 
2363  if (SvTRUE(ERRSV))
2364  {
2365  (void) POPs;
2366  PUTBACK;
2367  FREETMPS;
2368  LEAVE;
2369  /* XXX need to find a way to determine a better errcode here */
2370  ereport(ERROR,
2371  (errcode(ERRCODE_EXTERNAL_ROUTINE_EXCEPTION),
2373  }
2374 
2375  retval = newSVsv(POPs);
2376  (void) retval; /* silence compiler warning */
2377 
2378  PUTBACK;
2379  FREETMPS;
2380  LEAVE;
2381 }
2382 
2383 static Datum
2385 {
2386  bool nonatomic;
2387  plperl_proc_desc *prodesc;
2388  SV *perlret;
2389  Datum retval = 0;
2390  ReturnSetInfo *rsi;
2391  ErrorContextCallback pl_error_context;
2392 
2393  nonatomic = fcinfo->context &&
2394  IsA(fcinfo->context, CallContext) &&
2395  !castNode(CallContext, fcinfo->context)->atomic;
2396 
2397  if (SPI_connect_ext(nonatomic ? SPI_OPT_NONATOMIC : 0) != SPI_OK_CONNECT)
2398  elog(ERROR, "could not connect to SPI manager");
2399 
2400  prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, false, false);
2401  current_call_data->prodesc = prodesc;
2402  increment_prodesc_refcount(prodesc);
2403 
2404  /* Set a callback for error reporting */
2405  pl_error_context.callback = plperl_exec_callback;
2406  pl_error_context.previous = error_context_stack;
2407  pl_error_context.arg = prodesc->proname;
2408  error_context_stack = &pl_error_context;
2409 
2410  rsi = (ReturnSetInfo *) fcinfo->resultinfo;
2411 
2412  if (prodesc->fn_retisset)
2413  {
2414  /* Check context before allowing the call to go through */
2415  if (!rsi || !IsA(rsi, ReturnSetInfo) ||
2416  (rsi->allowedModes & SFRM_Materialize) == 0)
2417  ereport(ERROR,
2418  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2419  errmsg("set-valued function called in context that "
2420  "cannot accept a set")));
2421  }
2422 
2423  activate_interpreter(prodesc->interp);
2424 
2425  perlret = plperl_call_perl_func(prodesc, fcinfo);
2426 
2427  /************************************************************
2428  * Disconnect from SPI manager and then create the return
2429  * values datum (if the input function does a palloc for it
2430  * this must not be allocated in the SPI memory context
2431  * because SPI_finish would free it).
2432  ************************************************************/
2433  if (SPI_finish() != SPI_OK_FINISH)
2434  elog(ERROR, "SPI_finish() failed");
2435 
2436  if (prodesc->fn_retisset)
2437  {
2438  SV *sav;
2439 
2440  /*
2441  * If the Perl function returned an arrayref, we pretend that it
2442  * called return_next() for each element of the array, to handle old
2443  * SRFs that didn't know about return_next(). Any other sort of return
2444  * value is an error, except undef which means return an empty set.
2445  */
2446  sav = get_perl_array_ref(perlret);
2447  if (sav)
2448  {
2449  dTHX;
2450  int i = 0;
2451  SV **svp = 0;
2452  AV *rav = (AV *) SvRV(sav);
2453 
2454  while ((svp = av_fetch(rav, i, FALSE)) != NULL)
2455  {
2457  i++;
2458  }
2459  }
2460  else if (SvOK(perlret))
2461  {
2462  ereport(ERROR,
2463  (errcode(ERRCODE_DATATYPE_MISMATCH),
2464  errmsg("set-returning PL/Perl function must return "
2465  "reference to array or use return_next")));
2466  }
2467 
2469  if (current_call_data->tuple_store)
2470  {
2471  rsi->setResult = current_call_data->tuple_store;
2472  rsi->setDesc = current_call_data->ret_tdesc;
2473  }
2474  retval = (Datum) 0;
2475  }
2476  else if (prodesc->result_oid)
2477  {
2478  retval = plperl_sv_to_datum(perlret,
2479  prodesc->result_oid,
2480  -1,
2481  fcinfo,
2482  &prodesc->result_in_func,
2483  prodesc->result_typioparam,
2484  &fcinfo->isnull);
2485 
2486  if (fcinfo->isnull && rsi && IsA(rsi, ReturnSetInfo))
2487  rsi->isDone = ExprEndResult;
2488  }
2489 
2490  /* Restore the previous error callback */
2491  error_context_stack = pl_error_context.previous;
2492 
2493  SvREFCNT_dec_current(perlret);
2494 
2495  return retval;
2496 }
2497 
2498 
2499 static Datum
2501 {
2502  plperl_proc_desc *prodesc;
2503  SV *perlret;
2504  Datum retval;
2505  SV *svTD;
2506  HV *hvTD;
2507  ErrorContextCallback pl_error_context;
2508  TriggerData *tdata;
2509  int rc PG_USED_FOR_ASSERTS_ONLY;
2510 
2511  /* Connect to SPI manager */
2512  if (SPI_connect() != SPI_OK_CONNECT)
2513  elog(ERROR, "could not connect to SPI manager");
2514 
2515  /* Make transition tables visible to this SPI connection */
2516  tdata = (TriggerData *) fcinfo->context;
2517  rc = SPI_register_trigger_data(tdata);
2518  Assert(rc >= 0);
2519 
2520  /* Find or compile the function */
2521  prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, true, false);
2522  current_call_data->prodesc = prodesc;
2523  increment_prodesc_refcount(prodesc);
2524 
2525  /* Set a callback for error reporting */
2526  pl_error_context.callback = plperl_exec_callback;
2527  pl_error_context.previous = error_context_stack;
2528  pl_error_context.arg = prodesc->proname;
2529  error_context_stack = &pl_error_context;
2530 
2531  activate_interpreter(prodesc->interp);
2532 
2533  svTD = plperl_trigger_build_args(fcinfo);
2534  perlret = plperl_call_perl_trigger_func(prodesc, fcinfo, svTD);
2535  hvTD = (HV *) SvRV(svTD);
2536 
2537  /************************************************************
2538  * Disconnect from SPI manager and then create the return
2539  * values datum (if the input function does a palloc for it
2540  * this must not be allocated in the SPI memory context
2541  * because SPI_finish would free it).
2542  ************************************************************/
2543  if (SPI_finish() != SPI_OK_FINISH)
2544  elog(ERROR, "SPI_finish() failed");
2545 
2546  if (perlret == NULL || !SvOK(perlret))
2547  {
2548  /* undef result means go ahead with original tuple */
2549  TriggerData *trigdata = ((TriggerData *) fcinfo->context);
2550 
2551  if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
2552  retval = (Datum) trigdata->tg_trigtuple;
2553  else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
2554  retval = (Datum) trigdata->tg_newtuple;
2555  else if (TRIGGER_FIRED_BY_DELETE(trigdata->tg_event))
2556  retval = (Datum) trigdata->tg_trigtuple;
2557  else if (TRIGGER_FIRED_BY_TRUNCATE(trigdata->tg_event))
2558  retval = (Datum) trigdata->tg_trigtuple;
2559  else
2560  retval = (Datum) 0; /* can this happen? */
2561  }
2562  else
2563  {
2564  HeapTuple trv;
2565  char *tmp;
2566 
2567  tmp = sv2cstr(perlret);
2568 
2569  if (pg_strcasecmp(tmp, "SKIP") == 0)
2570  trv = NULL;
2571  else if (pg_strcasecmp(tmp, "MODIFY") == 0)
2572  {
2573  TriggerData *trigdata = (TriggerData *) fcinfo->context;
2574 
2575  if (TRIGGER_FIRED_BY_INSERT(trigdata->tg_event))
2576  trv = plperl_modify_tuple(hvTD, trigdata,
2577  trigdata->tg_trigtuple);
2578  else if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
2579  trv = plperl_modify_tuple(hvTD, trigdata,
2580  trigdata->tg_newtuple);
2581  else
2582  {
2583  ereport(WARNING,
2584  (errcode(ERRCODE_E_R_I_E_TRIGGER_PROTOCOL_VIOLATED),
2585  errmsg("ignoring modified row in DELETE trigger")));
2586  trv = NULL;
2587  }
2588  }
2589  else
2590  {
2591  ereport(ERROR,
2592  (errcode(ERRCODE_E_R_I_E_TRIGGER_PROTOCOL_VIOLATED),
2593  errmsg("result of PL/Perl trigger function must be undef, "
2594  "\"SKIP\", or \"MODIFY\"")));
2595  trv = NULL;
2596  }
2597  retval = PointerGetDatum(trv);
2598  pfree(tmp);
2599  }
2600 
2601  /* Restore the previous error callback */
2602  error_context_stack = pl_error_context.previous;
2603 
2604  SvREFCNT_dec_current(svTD);
2605  if (perlret)
2606  SvREFCNT_dec_current(perlret);
2607 
2608  return retval;
2609 }
2610 
2611 
2612 static void
2614 {
2615  plperl_proc_desc *prodesc;
2616  SV *svTD;
2617  ErrorContextCallback pl_error_context;
2618 
2619  /* Connect to SPI manager */
2620  if (SPI_connect() != SPI_OK_CONNECT)
2621  elog(ERROR, "could not connect to SPI manager");
2622 
2623  /* Find or compile the function */
2624  prodesc = compile_plperl_function(fcinfo->flinfo->fn_oid, false, true);
2625  current_call_data->prodesc = prodesc;
2626  increment_prodesc_refcount(prodesc);
2627 
2628  /* Set a callback for error reporting */
2629  pl_error_context.callback = plperl_exec_callback;
2630  pl_error_context.previous = error_context_stack;
2631  pl_error_context.arg = prodesc->proname;
2632  error_context_stack = &pl_error_context;
2633 
2634  activate_interpreter(prodesc->interp);
2635 
2636  svTD = plperl_event_trigger_build_args(fcinfo);
2637  plperl_call_perl_event_trigger_func(prodesc, fcinfo, svTD);
2638 
2639  if (SPI_finish() != SPI_OK_FINISH)
2640  elog(ERROR, "SPI_finish() failed");
2641 
2642  /* Restore the previous error callback */
2643  error_context_stack = pl_error_context.previous;
2644 
2645  SvREFCNT_dec_current(svTD);
2646 }
2647 
2648 
2649 static bool
2651 {
2652  if (proc_ptr && proc_ptr->proc_ptr)
2653  {
2654  plperl_proc_desc *prodesc = proc_ptr->proc_ptr;
2655  bool uptodate;
2656 
2657  /************************************************************
2658  * If it's present, must check whether it's still up to date.
2659  * This is needed because CREATE OR REPLACE FUNCTION can modify the
2660  * function's pg_proc entry without changing its OID.
2661  ************************************************************/
2662  uptodate = (prodesc->fn_xmin == HeapTupleHeaderGetRawXmin(procTup->t_data) &&
2663  ItemPointerEquals(&prodesc->fn_tid, &procTup->t_self));
2664 
2665  if (uptodate)
2666  return true;
2667 
2668  /* Otherwise, unlink the obsoleted entry from the hashtable ... */
2669  proc_ptr->proc_ptr = NULL;
2670  /* ... and release the corresponding refcount, probably deleting it */
2671  decrement_prodesc_refcount(prodesc);
2672  }
2673 
2674  return false;
2675 }
2676 
2677 
2678 static void
2680 {
2681  Assert(prodesc->fn_refcount == 0);
2682  /* Release CODE reference, if we have one, from the appropriate interp */
2683  if (prodesc->reference)
2684  {
2686 
2687  activate_interpreter(prodesc->interp);
2688  SvREFCNT_dec_current(prodesc->reference);
2689  activate_interpreter(oldinterp);
2690  }
2691  /* Release all PG-owned data for this proc */
2692  MemoryContextDelete(prodesc->fn_cxt);
2693 }
2694 
2695 
2696 static plperl_proc_desc *
2697 compile_plperl_function(Oid fn_oid, bool is_trigger, bool is_event_trigger)
2698 {
2699  HeapTuple procTup;
2700  Form_pg_proc procStruct;
2701  plperl_proc_key proc_key;
2702  plperl_proc_ptr *proc_ptr;
2703  plperl_proc_desc *volatile prodesc = NULL;
2704  volatile MemoryContext proc_cxt = NULL;
2706  ErrorContextCallback plperl_error_context;
2707 
2708  /* We'll need the pg_proc tuple in any case... */
2709  procTup = SearchSysCache1(PROCOID, ObjectIdGetDatum(fn_oid));
2710  if (!HeapTupleIsValid(procTup))
2711  elog(ERROR, "cache lookup failed for function %u", fn_oid);
2712  procStruct = (Form_pg_proc) GETSTRUCT(procTup);
2713 
2714  /*
2715  * Try to find function in plperl_proc_hash. The reason for this
2716  * overcomplicated-seeming lookup procedure is that we don't know whether
2717  * it's plperl or plperlu, and don't want to spend a lookup in pg_language
2718  * to find out.
2719  */
2720  proc_key.proc_id = fn_oid;
2721  proc_key.is_trigger = is_trigger;
2722  proc_key.user_id = GetUserId();
2723  proc_ptr = hash_search(plperl_proc_hash, &proc_key,
2724  HASH_FIND, NULL);
2725  if (validate_plperl_function(proc_ptr, procTup))
2726  {
2727  /* Found valid plperl entry */
2728  ReleaseSysCache(procTup);
2729  return proc_ptr->proc_ptr;
2730  }
2731 
2732  /* If not found or obsolete, maybe it's plperlu */
2733  proc_key.user_id = InvalidOid;
2734  proc_ptr = hash_search(plperl_proc_hash, &proc_key,
2735  HASH_FIND, NULL);
2736  if (validate_plperl_function(proc_ptr, procTup))
2737  {
2738  /* Found valid plperlu entry */
2739  ReleaseSysCache(procTup);
2740  return proc_ptr->proc_ptr;
2741  }
2742 
2743  /************************************************************
2744  * If we haven't found it in the hashtable, we analyze
2745  * the function's arguments and return type and store
2746  * the in-/out-functions in the prodesc block,
2747  * then we load the procedure into the Perl interpreter,
2748  * and last we create a new hashtable entry for it.
2749  ************************************************************/
2750 
2751  /* Set a callback for reporting compilation errors */
2752  plperl_error_context.callback = plperl_compile_callback;
2753  plperl_error_context.previous = error_context_stack;
2754  plperl_error_context.arg = NameStr(procStruct->proname);
2755  error_context_stack = &plperl_error_context;
2756 
2757  PG_TRY();
2758  {
2759  HeapTuple langTup;
2760  HeapTuple typeTup;
2761  Form_pg_language langStruct;
2762  Form_pg_type typeStruct;
2763  Datum protrftypes_datum;
2764  Datum prosrcdatum;
2765  bool isnull;
2766  char *proc_source;
2767  MemoryContext oldcontext;
2768 
2769  /************************************************************
2770  * Allocate a context that will hold all PG data for the procedure.
2771  ************************************************************/
2773  "PL/Perl function",
2775 
2776  /************************************************************
2777  * Allocate and fill a new procedure description block.
2778  * struct prodesc and subsidiary data must all live in proc_cxt.
2779  ************************************************************/
2780  oldcontext = MemoryContextSwitchTo(proc_cxt);
2781  prodesc = (plperl_proc_desc *) palloc0(sizeof(plperl_proc_desc));
2782  prodesc->proname = pstrdup(NameStr(procStruct->proname));
2783  MemoryContextSetIdentifier(proc_cxt, prodesc->proname);
2784  prodesc->fn_cxt = proc_cxt;
2785  prodesc->fn_refcount = 0;
2786  prodesc->fn_xmin = HeapTupleHeaderGetRawXmin(procTup->t_data);
2787  prodesc->fn_tid = procTup->t_self;
2788  prodesc->nargs = procStruct->pronargs;
2789  prodesc->arg_out_func = (FmgrInfo *) palloc0(prodesc->nargs * sizeof(FmgrInfo));
2790  prodesc->arg_is_rowtype = (bool *) palloc0(prodesc->nargs * sizeof(bool));
2791  prodesc->arg_arraytype = (Oid *) palloc0(prodesc->nargs * sizeof(Oid));
2792  MemoryContextSwitchTo(oldcontext);
2793 
2794  /* Remember if function is STABLE/IMMUTABLE */
2795  prodesc->fn_readonly =
2796  (procStruct->provolatile != PROVOLATILE_VOLATILE);
2797 
2798  /* Fetch protrftypes */
2799  protrftypes_datum = SysCacheGetAttr(PROCOID, procTup,
2800  Anum_pg_proc_protrftypes, &isnull);
2801  MemoryContextSwitchTo(proc_cxt);
2802  prodesc->trftypes = isnull ? NIL : oid_array_to_list(protrftypes_datum);
2803  MemoryContextSwitchTo(oldcontext);
2804 
2805  /************************************************************
2806  * Lookup the pg_language tuple by Oid
2807  ************************************************************/
2808  langTup = SearchSysCache1(LANGOID,
2809  ObjectIdGetDatum(procStruct->prolang));
2810  if (!HeapTupleIsValid(langTup))
2811  elog(ERROR, "cache lookup failed for language %u",
2812  procStruct->prolang);
2813  langStruct = (Form_pg_language) GETSTRUCT(langTup);
2814  prodesc->lang_oid = langStruct->oid;
2815  prodesc->lanpltrusted = langStruct->lanpltrusted;
2816  ReleaseSysCache(langTup);
2817 
2818  /************************************************************
2819  * Get the required information for input conversion of the
2820  * return value.
2821  ************************************************************/
2822  if (!is_trigger && !is_event_trigger)
2823  {
2824  Oid rettype = procStruct->prorettype;
2825 
2826  typeTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(rettype));
2827  if (!HeapTupleIsValid(typeTup))
2828  elog(ERROR, "cache lookup failed for type %u", rettype);
2829  typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
2830 
2831  /* Disallow pseudotype result, except VOID or RECORD */
2832  if (typeStruct->typtype == TYPTYPE_PSEUDO)
2833  {
2834  if (rettype == VOIDOID ||
2835  rettype == RECORDOID)
2836  /* okay */ ;
2837  else if (rettype == TRIGGEROID ||
2838  rettype == EVENT_TRIGGEROID)
2839  ereport(ERROR,
2840  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2841  errmsg("trigger functions can only be called "
2842  "as triggers")));
2843  else
2844  ereport(ERROR,
2845  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2846  errmsg("PL/Perl functions cannot return type %s",
2847  format_type_be(rettype))));
2848  }
2849 
2850  prodesc->result_oid = rettype;
2851  prodesc->fn_retisset = procStruct->proretset;
2852  prodesc->fn_retistuple = type_is_rowtype(rettype);
2853  prodesc->fn_retisarray = IsTrueArrayType(typeStruct);
2854 
2855  fmgr_info_cxt(typeStruct->typinput,
2856  &(prodesc->result_in_func),
2857  proc_cxt);
2858  prodesc->result_typioparam = getTypeIOParam(typeTup);
2859 
2860  ReleaseSysCache(typeTup);
2861  }
2862 
2863  /************************************************************
2864  * Get the required information for output conversion
2865  * of all procedure arguments
2866  ************************************************************/
2867  if (!is_trigger && !is_event_trigger)
2868  {
2869  int i;
2870 
2871  for (i = 0; i < prodesc->nargs; i++)
2872  {
2873  Oid argtype = procStruct->proargtypes.values[i];
2874 
2875  typeTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(argtype));
2876  if (!HeapTupleIsValid(typeTup))
2877  elog(ERROR, "cache lookup failed for type %u", argtype);
2878  typeStruct = (Form_pg_type) GETSTRUCT(typeTup);
2879 
2880  /* Disallow pseudotype argument, except RECORD */
2881  if (typeStruct->typtype == TYPTYPE_PSEUDO &&
2882  argtype != RECORDOID)
2883  ereport(ERROR,
2884  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
2885  errmsg("PL/Perl functions cannot accept type %s",
2886  format_type_be(argtype))));
2887 
2888  if (type_is_rowtype(argtype))
2889  prodesc->arg_is_rowtype[i] = true;
2890  else
2891  {
2892  prodesc->arg_is_rowtype[i] = false;
2893  fmgr_info_cxt(typeStruct->typoutput,
2894  &(prodesc->arg_out_func[i]),
2895  proc_cxt);
2896  }
2897 
2898  /* Identify array-type arguments */
2899  if (IsTrueArrayType(typeStruct))
2900  prodesc->arg_arraytype[i] = argtype;
2901  else
2902  prodesc->arg_arraytype[i] = InvalidOid;
2903 
2904  ReleaseSysCache(typeTup);
2905  }
2906  }
2907 
2908  /************************************************************
2909  * create the text of the anonymous subroutine.
2910  * we do not use a named subroutine so that we can call directly
2911  * through the reference.
2912  ************************************************************/
2913  prosrcdatum = SysCacheGetAttr(PROCOID, procTup,
2914  Anum_pg_proc_prosrc, &isnull);
2915  if (isnull)
2916  elog(ERROR, "null prosrc");
2917  proc_source = TextDatumGetCString(prosrcdatum);
2918 
2919  /************************************************************
2920  * Create the procedure in the appropriate interpreter
2921  ************************************************************/
2922 
2924 
2925  prodesc->interp = plperl_active_interp;
2926 
2927  plperl_create_sub(prodesc, proc_source, fn_oid);
2928 
2929  activate_interpreter(oldinterp);
2930 
2931  pfree(proc_source);
2932 
2933  if (!prodesc->reference) /* can this happen? */
2934  elog(ERROR, "could not create PL/Perl internal procedure");
2935 
2936  /************************************************************
2937  * OK, link the procedure into the correct hashtable entry.
2938  * Note we assume that the hashtable entry either doesn't exist yet,
2939  * or we already cleared its proc_ptr during the validation attempts
2940  * above. So no need to decrement an old refcount here.
2941  ************************************************************/
2942  proc_key.user_id = prodesc->lanpltrusted ? GetUserId() : InvalidOid;
2943 
2944  proc_ptr = hash_search(plperl_proc_hash, &proc_key,
2945  HASH_ENTER, NULL);
2946  /* We assume these two steps can't throw an error: */
2947  proc_ptr->proc_ptr = prodesc;
2948  increment_prodesc_refcount(prodesc);
2949  }
2950  PG_CATCH();
2951  {
2952  /*
2953  * If we got as far as creating a reference, we should be able to use
2954  * free_plperl_function() to clean up. If not, then at most we have
2955  * some PG memory resources in proc_cxt, which we can just delete.
2956  */
2957  if (prodesc && prodesc->reference)
2958  free_plperl_function(prodesc);
2959  else if (proc_cxt)
2960  MemoryContextDelete(proc_cxt);
2961 
2962  /* Be sure to restore the previous interpreter, too, for luck */
2963  activate_interpreter(oldinterp);
2964 
2965  PG_RE_THROW();
2966  }
2967  PG_END_TRY();
2968 
2969  /* restore previous error callback */
2970  error_context_stack = plperl_error_context.previous;
2971 
2972  ReleaseSysCache(procTup);
2973 
2974  return prodesc;
2975 }
2976 
2977 /* Build a hash from a given composite/row datum */
2978 static SV *
2980 {
2981  HeapTupleHeader td;
2982  Oid tupType;
2983  int32 tupTypmod;
2984  TupleDesc tupdesc;
2985  HeapTupleData tmptup;
2986  SV *sv;
2987 
2988  td = DatumGetHeapTupleHeader(attr);
2989 
2990  /* Extract rowtype info and find a tupdesc */
2991  tupType = HeapTupleHeaderGetTypeId(td);
2992  tupTypmod = HeapTupleHeaderGetTypMod(td);
2993  tupdesc = lookup_rowtype_tupdesc(tupType, tupTypmod);
2994 
2995  /* Build a temporary HeapTuple control structure */
2996  tmptup.t_len = HeapTupleHeaderGetDatumLength(td);
2997  tmptup.t_data = td;
2998 
2999  sv = plperl_hash_from_tuple(&tmptup, tupdesc, true);
3000  ReleaseTupleDesc(tupdesc);
3001 
3002  return sv;
3003 }
3004 
3005 /* Build a hash from all attributes of a given tuple. */
3006 static SV *
3007 plperl_hash_from_tuple(HeapTuple tuple, TupleDesc tupdesc, bool include_generated)
3008 {
3009  dTHX;
3010  HV *hv;
3011  int i;
3012 
3013  /* since this function recurses, it could be driven to stack overflow */
3015 
3016  hv = newHV();
3017  hv_ksplit(hv, tupdesc->natts); /* pre-grow the hash */
3018 
3019  for (i = 0; i < tupdesc->natts; i++)
3020  {
3021  Datum attr;
3022  bool isnull,
3023  typisvarlena;
3024  char *attname;
3025  Oid typoutput;
3026  Form_pg_attribute att = TupleDescAttr(tupdesc, i);
3027 
3028  if (att->attisdropped)
3029  continue;
3030 
3031  if (att->attgenerated)
3032  {
3033  /* don't include unless requested */
3034  if (!include_generated)
3035  continue;
3036  }
3037 
3038  attname = NameStr(att->attname);
3039  attr = heap_getattr(tuple, i + 1, tupdesc, &isnull);
3040 
3041  if (isnull)
3042  {
3043  /*
3044  * Store (attname => undef) and move on. Note we can't use
3045  * &PL_sv_undef here; see "AVs, HVs and undefined values" in
3046  * perlguts for an explanation.
3047  */
3048  hv_store_string(hv, attname, newSV(0));
3049  continue;
3050  }
3051 
3052  if (type_is_rowtype(att->atttypid))
3053  {
3054  SV *sv = plperl_hash_from_datum(attr);
3055 
3056  hv_store_string(hv, attname, sv);
3057  }
3058  else
3059  {
3060  SV *sv;
3061  Oid funcid;
3062 
3063  if (OidIsValid(get_base_element_type(att->atttypid)))
3064  sv = plperl_ref_from_pg_array(attr, att->atttypid);
3065  else if ((funcid = get_transform_fromsql(att->atttypid, current_call_data->prodesc->lang_oid, current_call_data->prodesc->trftypes)))
3066  sv = (SV *) DatumGetPointer(OidFunctionCall1(funcid, attr));
3067  else
3068  {
3069  char *outputstr;
3070 
3071  /* XXX should have a way to cache these lookups */
3072  getTypeOutputInfo(att->atttypid, &typoutput, &typisvarlena);
3073 
3074  outputstr = OidOutputFunctionCall(typoutput, attr);
3075  sv = cstr2sv(outputstr);
3076  pfree(outputstr);
3077  }
3078 
3079  hv_store_string(hv, attname, sv);
3080  }
3081  }
3082  return newRV_noinc((SV *) hv);
3083 }
3084 
3085 
3086 static void
3088 {
3089  /* see comment in plperl_fini() */
3090  if (plperl_ending)
3091  {
3092  /* simple croak as we don't want to involve PostgreSQL code */
3093  croak("SPI functions can not be used in END blocks");
3094  }
3095 }
3096 
3097 
3098 HV *
3099 plperl_spi_exec(char *query, int limit)
3100 {
3101  HV *ret_hv;
3102 
3103  /*
3104  * Execute the query inside a sub-transaction, so we can cope with errors
3105  * sanely
3106  */
3107  MemoryContext oldcontext = CurrentMemoryContext;
3109 
3111 
3113  /* Want to run inside function's memory context */
3114  MemoryContextSwitchTo(oldcontext);
3115 
3116  PG_TRY();
3117  {
3118  int spi_rv;
3119 
3120  pg_verifymbstr(query, strlen(query), false);
3121 
3122  spi_rv = SPI_execute(query, current_call_data->prodesc->fn_readonly,
3123  limit);
3125  spi_rv);
3126 
3127  /* Commit the inner transaction, return to outer xact context */
3129  MemoryContextSwitchTo(oldcontext);
3130  CurrentResourceOwner = oldowner;
3131  }
3132  PG_CATCH();
3133  {
3134  ErrorData *edata;
3135 
3136  /* Save error info */
3137  MemoryContextSwitchTo(oldcontext);
3138  edata = CopyErrorData();
3139  FlushErrorState();
3140 
3141  /* Abort the inner transaction */
3143  MemoryContextSwitchTo(oldcontext);
3144  CurrentResourceOwner = oldowner;
3145 
3146  /* Punt the error to Perl */
3147  croak_cstr(edata->message);
3148 
3149  /* Can't get here, but keep compiler quiet */
3150  return NULL;
3151  }
3152  PG_END_TRY();
3153 
3154  return ret_hv;
3155 }
3156 
3157 
3158 static HV *
3160  int status)
3161 {
3162  dTHX;
3163  HV *result;
3164 
3166 
3167  result = newHV();
3168 
3169  hv_store_string(result, "status",
3170  cstr2sv(SPI_result_code_string(status)));
3171  hv_store_string(result, "processed",
3172  (processed > (uint64) UV_MAX) ?
3173  newSVnv((NV) processed) :
3174  newSVuv((UV) processed));
3175 
3176  if (status > 0 && tuptable)
3177  {
3178  AV *rows;
3179  SV *row;
3180  uint64 i;
3181 
3182  /* Prevent overflow in call to av_extend() */
3183  if (processed > (uint64) AV_SIZE_MAX)
3184  ereport(ERROR,
3185  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
3186  errmsg("query result has too many rows to fit in a Perl array")));
3187 
3188  rows = newAV();
3189  av_extend(rows, processed);
3190  for (i = 0; i < processed; i++)
3191  {
3192  row = plperl_hash_from_tuple(tuptable->vals[i], tuptable->tupdesc, true);
3193  av_push(rows, row);
3194  }
3195  hv_store_string(result, "rows",
3196  newRV_noinc((SV *) rows));
3197  }
3198 
3199  SPI_freetuptable(tuptable);
3200 
3201  return result;
3202 }
3203 
3204 
3205 /*
3206  * plperl_return_next catches any error and converts it to a Perl error.
3207  * We assume (perhaps without adequate justification) that we need not abort
3208  * the current transaction if the Perl code traps the error.
3209  */
3210 void
3212 {
3213  MemoryContext oldcontext = CurrentMemoryContext;
3214 
3215  PG_TRY();
3216  {
3218  }
3219  PG_CATCH();
3220  {
3221  ErrorData *edata;
3222 
3223  /* Must reset elog.c's state */
3224  MemoryContextSwitchTo(oldcontext);
3225  edata = CopyErrorData();
3226  FlushErrorState();
3227 
3228  /* Punt the error to Perl */
3229  croak_cstr(edata->message);
3230  }
3231  PG_END_TRY();
3232 }
3233 
3234 /*
3235  * plperl_return_next_internal reports any errors in Postgres fashion
3236  * (via ereport).
3237  */
3238 static void
3240 {
3241  plperl_proc_desc *prodesc;
3242  FunctionCallInfo fcinfo;
3243  ReturnSetInfo *rsi;
3244  MemoryContext old_cxt;
3245 
3246  if (!sv)
3247  return;
3248 
3249  prodesc = current_call_data->prodesc;
3250  fcinfo = current_call_data->fcinfo;
3251  rsi = (ReturnSetInfo *) fcinfo->resultinfo;
3252 
3253  if (!prodesc->fn_retisset)
3254  ereport(ERROR,
3255  (errcode(ERRCODE_SYNTAX_ERROR),
3256  errmsg("cannot use return_next in a non-SETOF function")));
3257 
3258  if (!current_call_data->ret_tdesc)
3259  {
3260  TupleDesc tupdesc;
3261 
3262  Assert(!current_call_data->tuple_store);
3263 
3264  /*
3265  * This is the first call to return_next in the current PL/Perl
3266  * function call, so identify the output tuple type and create a
3267  * tuplestore to hold the result rows.
3268  */
3269  if (prodesc->fn_retistuple)
3270  {
3271  TypeFuncClass funcclass;
3272  Oid typid;
3273 
3274  funcclass = get_call_result_type(fcinfo, &typid, &tupdesc);
3275  if (funcclass != TYPEFUNC_COMPOSITE &&
3276  funcclass != TYPEFUNC_COMPOSITE_DOMAIN)
3277  ereport(ERROR,
3278  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
3279  errmsg("function returning record called in context "
3280  "that cannot accept type record")));
3281  /* if domain-over-composite, remember the domain's type OID */
3282  if (funcclass == TYPEFUNC_COMPOSITE_DOMAIN)
3283  current_call_data->cdomain_oid = typid;
3284  }
3285  else
3286  {
3287  tupdesc = rsi->expectedDesc;
3288  /* Protect assumption below that we return exactly one column */
3289  if (tupdesc == NULL || tupdesc->natts != 1)
3290  elog(ERROR, "expected single-column result descriptor for non-composite SETOF result");
3291  }
3292 
3293  /*
3294  * Make sure the tuple_store and ret_tdesc are sufficiently
3295  * long-lived.
3296  */
3298 
3299  current_call_data->ret_tdesc = CreateTupleDescCopy(tupdesc);
3300  current_call_data->tuple_store =
3302  false, work_mem);
3303 
3304  MemoryContextSwitchTo(old_cxt);
3305  }
3306 
3307  /*
3308  * Producing the tuple we want to return requires making plenty of
3309  * palloc() allocations that are not cleaned up. Since this function can
3310  * be called many times before the current memory context is reset, we
3311  * need to do those allocations in a temporary context.
3312  */
3313  if (!current_call_data->tmp_cxt)
3314  {
3315  current_call_data->tmp_cxt =
3317  "PL/Perl return_next temporary cxt",
3319  }
3320 
3321  old_cxt = MemoryContextSwitchTo(current_call_data->tmp_cxt);
3322 
3323  if (prodesc->fn_retistuple)
3324  {
3325  HeapTuple tuple;
3326 
3327  if (!(SvOK(sv) && SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVHV))
3328  ereport(ERROR,
3329  (errcode(ERRCODE_DATATYPE_MISMATCH),
3330  errmsg("SETOF-composite-returning PL/Perl function "
3331  "must call return_next with reference to hash")));
3332 
3333  tuple = plperl_build_tuple_result((HV *) SvRV(sv),
3334  current_call_data->ret_tdesc);
3335 
3336  if (OidIsValid(current_call_data->cdomain_oid))
3337  domain_check(HeapTupleGetDatum(tuple), false,
3338  current_call_data->cdomain_oid,
3339  &current_call_data->cdomain_info,
3341 
3342  tuplestore_puttuple(current_call_data->tuple_store, tuple);
3343  }
3344  else if (prodesc->result_oid)
3345  {
3346  Datum ret[1];
3347  bool isNull[1];
3348 
3349  ret[0] = plperl_sv_to_datum(sv,
3350  prodesc->result_oid,
3351  -1,
3352  fcinfo,
3353  &prodesc->result_in_func,
3354  prodesc->result_typioparam,
3355  &isNull[0]);
3356 
3357  tuplestore_putvalues(current_call_data->tuple_store,
3358  current_call_data->ret_tdesc,
3359  ret, isNull);
3360  }
3361 
3362  MemoryContextSwitchTo(old_cxt);
3363  MemoryContextReset(current_call_data->tmp_cxt);
3364 }
3365 
3366 
3367 SV *
3368 plperl_spi_query(char *query)
3369 {
3370  SV *cursor;
3371 
3372  /*
3373  * Execute the query inside a sub-transaction, so we can cope with errors
3374  * sanely
3375  */
3376  MemoryContext oldcontext = CurrentMemoryContext;
3378 
3380 
3382  /* Want to run inside function's memory context */
3383  MemoryContextSwitchTo(oldcontext);
3384 
3385  PG_TRY();
3386  {
3387  SPIPlanPtr plan;
3388  Portal portal;
3389 
3390  /* Make sure the query is validly encoded */
3391  pg_verifymbstr(query, strlen(query), false);
3392 
3393  /* Create a cursor for the query */
3394  plan = SPI_prepare(query, 0, NULL);
3395  if (plan == NULL)
3396  elog(ERROR, "SPI_prepare() failed:%s",
3398 
3399  portal = SPI_cursor_open(NULL, plan, NULL, NULL, false);
3400  SPI_freeplan(plan);
3401  if (portal == NULL)
3402  elog(ERROR, "SPI_cursor_open() failed:%s",
3404  cursor = cstr2sv(portal->name);
3405 
3406  PinPortal(portal);
3407 
3408  /* Commit the inner transaction, return to outer xact context */
3410  MemoryContextSwitchTo(oldcontext);
3411  CurrentResourceOwner = oldowner;
3412  }
3413  PG_CATCH();
3414  {
3415  ErrorData *edata;
3416 
3417  /* Save error info */
3418  MemoryContextSwitchTo(oldcontext);
3419  edata = CopyErrorData();
3420  FlushErrorState();
3421 
3422  /* Abort the inner transaction */
3424  MemoryContextSwitchTo(oldcontext);
3425  CurrentResourceOwner = oldowner;
3426 
3427  /* Punt the error to Perl */
3428  croak_cstr(edata->message);
3429 
3430  /* Can't get here, but keep compiler quiet */
3431  return NULL;
3432  }
3433  PG_END_TRY();
3434 
3435  return cursor;
3436 }
3437 
3438 
3439 SV *
3441 {
3442  SV *row;
3443 
3444  /*
3445  * Execute the FETCH inside a sub-transaction, so we can cope with errors
3446  * sanely
3447  */
3448  MemoryContext oldcontext = CurrentMemoryContext;
3450 
3452 
3454  /* Want to run inside function's memory context */
3455  MemoryContextSwitchTo(oldcontext);
3456 
3457  PG_TRY();
3458  {
3459  dTHX;
3460  Portal p = SPI_cursor_find(cursor);
3461 
3462  if (!p)
3463  {
3464  row = &PL_sv_undef;
3465  }
3466  else
3467  {
3468  SPI_cursor_fetch(p, true, 1);
3469  if (SPI_processed == 0)
3470  {
3471  UnpinPortal(p);
3472  SPI_cursor_close(p);
3473  row = &PL_sv_undef;
3474  }
3475  else
3476  {
3479  true);
3480  }
3482  }
3483 
3484  /* Commit the inner transaction, return to outer xact context */
3486  MemoryContextSwitchTo(oldcontext);
3487  CurrentResourceOwner = oldowner;
3488  }
3489  PG_CATCH();
3490  {
3491  ErrorData *edata;
3492 
3493  /* Save error info */
3494  MemoryContextSwitchTo(oldcontext);
3495  edata = CopyErrorData();
3496  FlushErrorState();
3497 
3498  /* Abort the inner transaction */
3500  MemoryContextSwitchTo(oldcontext);
3501  CurrentResourceOwner = oldowner;
3502 
3503  /* Punt the error to Perl */
3504  croak_cstr(edata->message);
3505 
3506  /* Can't get here, but keep compiler quiet */
3507  return NULL;
3508  }
3509  PG_END_TRY();
3510 
3511  return row;
3512 }
3513 
3514 void
3516 {
3517  Portal p;
3518 
3520 
3521  p = SPI_cursor_find(cursor);
3522 
3523  if (p)
3524  {
3525  UnpinPortal(p);
3526  SPI_cursor_close(p);
3527  }
3528 }
3529 
3530 SV *
3531 plperl_spi_prepare(char *query, int argc, SV **argv)
3532 {
3533  volatile SPIPlanPtr plan = NULL;
3534  volatile MemoryContext plan_cxt = NULL;
3535  plperl_query_desc *volatile qdesc = NULL;
3536  plperl_query_entry *volatile hash_entry = NULL;
3537  MemoryContext oldcontext = CurrentMemoryContext;
3539  MemoryContext work_cxt;
3540  bool found;
3541  int i;
3542 
3544 
3546  MemoryContextSwitchTo(oldcontext);
3547 
3548  PG_TRY();
3549  {
3551 
3552  /************************************************************
3553  * Allocate the new querydesc structure
3554  *
3555  * The qdesc struct, as well as all its subsidiary data, lives in its
3556  * plan_cxt. But note that the SPIPlan does not.
3557  ************************************************************/
3559  "PL/Perl spi_prepare query",
3561  MemoryContextSwitchTo(plan_cxt);
3562  qdesc = (plperl_query_desc *) palloc0(sizeof(plperl_query_desc));
3563  snprintf(qdesc->qname, sizeof(qdesc->qname), "%p", qdesc);
3564  qdesc->plan_cxt = plan_cxt;
3565  qdesc->nargs = argc;
3566  qdesc->argtypes = (Oid *) palloc(argc * sizeof(Oid));
3567  qdesc->arginfuncs = (FmgrInfo *) palloc(argc * sizeof(FmgrInfo));
3568  qdesc->argtypioparams = (Oid *) palloc(argc * sizeof(Oid));
3569  MemoryContextSwitchTo(oldcontext);
3570 
3571  /************************************************************
3572  * Do the following work in a short-lived context so that we don't
3573  * leak a lot of memory in the PL/Perl function's SPI Proc context.
3574  ************************************************************/
3576  "PL/Perl spi_prepare workspace",
3578  MemoryContextSwitchTo(work_cxt);
3579 
3580  /************************************************************
3581  * Resolve argument type names and then look them up by oid
3582  * in the system cache, and remember the required information
3583  * for input conversion.
3584  ************************************************************/
3585  for (i = 0; i < argc; i++)
3586  {
3587  Oid typId,
3588  typInput,
3589  typIOParam;
3590  int32 typmod;
3591  char *typstr;
3592 
3593  typstr = sv2cstr(argv[i]);
3594  parseTypeString(typstr, &typId, &typmod, false);
3595  pfree(typstr);
3596 
3597  getTypeInputInfo(typId, &typInput, &typIOParam);
3598 
3599  qdesc->argtypes[i] = typId;
3600  fmgr_info_cxt(typInput, &(qdesc->arginfuncs[i]), plan_cxt);
3601  qdesc->argtypioparams[i] = typIOParam;
3602  }
3603 
3604  /* Make sure the query is validly encoded */
3605  pg_verifymbstr(query, strlen(query), false);
3606 
3607  /************************************************************
3608  * Prepare the plan and check for errors
3609  ************************************************************/
3610  plan = SPI_prepare(query, argc, qdesc->argtypes);
3611 
3612  if (plan == NULL)
3613  elog(ERROR, "SPI_prepare() failed:%s",
3615 
3616  /************************************************************
3617  * Save the plan into permanent memory (right now it's in the
3618  * SPI procCxt, which will go away at function end).
3619  ************************************************************/
3620  if (SPI_keepplan(plan))
3621  elog(ERROR, "SPI_keepplan() failed");
3622  qdesc->plan = plan;
3623 
3624  /************************************************************
3625  * Insert a hashtable entry for the plan.
3626  ************************************************************/
3627  hash_entry = hash_search(plperl_active_interp->query_hash,
3628  qdesc->qname,
3629  HASH_ENTER, &found);
3630  hash_entry->query_data = qdesc;
3631 
3632  /* Get rid of workspace */
3633  MemoryContextDelete(work_cxt);
3634 
3635  /* Commit the inner transaction, return to outer xact context */
3637  MemoryContextSwitchTo(oldcontext);
3638  CurrentResourceOwner = oldowner;
3639  }
3640  PG_CATCH();
3641  {
3642  ErrorData *edata;
3643 
3644  /* Save error info */
3645  MemoryContextSwitchTo(oldcontext);
3646  edata = CopyErrorData();
3647  FlushErrorState();
3648 
3649  /* Drop anything we managed to allocate */
3650  if (hash_entry)
3651  hash_search(plperl_active_interp->query_hash,
3652  qdesc->qname,
3653  HASH_REMOVE, NULL);
3654  if (plan_cxt)
3655  MemoryContextDelete(plan_cxt);
3656  if (plan)
3657  SPI_freeplan(plan);
3658 
3659  /* Abort the inner transaction */
3661  MemoryContextSwitchTo(oldcontext);
3662  CurrentResourceOwner = oldowner;
3663 
3664  /* Punt the error to Perl */
3665  croak_cstr(edata->message);
3666 
3667  /* Can't get here, but keep compiler quiet */
3668  return NULL;
3669  }
3670  PG_END_TRY();
3671 
3672  /************************************************************
3673  * Return the query's hash key to the caller.
3674  ************************************************************/
3675  return cstr2sv(qdesc->qname);
3676 }
3677 
3678 HV *
3679 plperl_spi_exec_prepared(char *query, HV *attr, int argc, SV **argv)
3680 {
3681  HV *ret_hv;
3682  SV **sv;
3683  int i,
3684  limit,
3685  spi_rv;
3686  char *nulls;
3687  Datum *argvalues;
3688  plperl_query_desc *qdesc;
3689  plperl_query_entry *hash_entry;
3690 
3691  /*
3692  * Execute the query inside a sub-transaction, so we can cope with errors
3693  * sanely
3694  */
3695  MemoryContext oldcontext = CurrentMemoryContext;
3697 
3699 
3701  /* Want to run inside function's memory context */
3702  MemoryContextSwitchTo(oldcontext);
3703 
3704  PG_TRY();
3705  {
3706  dTHX;
3707 
3708  /************************************************************
3709  * Fetch the saved plan descriptor, see if it's o.k.
3710  ************************************************************/
3711  hash_entry = hash_search(plperl_active_interp->query_hash, query,
3712  HASH_FIND, NULL);
3713  if (hash_entry == NULL)
3714  elog(ERROR, "spi_exec_prepared: Invalid prepared query passed");
3715 
3716  qdesc = hash_entry->query_data;
3717  if (qdesc == NULL)
3718  elog(ERROR, "spi_exec_prepared: plperl query_hash value vanished");
3719 
3720  if (qdesc->nargs != argc)
3721  elog(ERROR, "spi_exec_prepared: expected %d argument(s), %d passed",
3722  qdesc->nargs, argc);
3723 
3724  /************************************************************
3725  * Parse eventual attributes
3726  ************************************************************/
3727  limit = 0;
3728  if (attr != NULL)
3729  {
3730  sv = hv_fetch_string(attr, "limit");
3731  if (sv && *sv && SvIOK(*sv))
3732  limit = SvIV(*sv);
3733  }
3734  /************************************************************
3735  * Set up arguments
3736  ************************************************************/
3737  if (argc > 0)
3738  {
3739  nulls = (char *) palloc(argc);
3740  argvalues = (Datum *) palloc(argc * sizeof(Datum));
3741  }
3742  else
3743  {
3744  nulls = NULL;
3745  argvalues = NULL;
3746  }
3747 
3748  for (i = 0; i < argc; i++)
3749  {
3750  bool isnull;
3751 
3752  argvalues[i] = plperl_sv_to_datum(argv[i],
3753  qdesc->argtypes[i],
3754  -1,
3755  NULL,
3756  &qdesc->arginfuncs[i],
3757  qdesc->argtypioparams[i],
3758  &isnull);
3759  nulls[i] = isnull ? 'n' : ' ';
3760  }
3761 
3762  /************************************************************
3763  * go
3764  ************************************************************/
3765  spi_rv = SPI_execute_plan(qdesc->plan, argvalues, nulls,
3766  current_call_data->prodesc->fn_readonly, limit);
3768  spi_rv);
3769  if (argc > 0)
3770  {
3771  pfree(argvalues);
3772  pfree(nulls);
3773  }
3774 
3775  /* Commit the inner transaction, return to outer xact context */
3777  MemoryContextSwitchTo(oldcontext);
3778  CurrentResourceOwner = oldowner;
3779  }
3780  PG_CATCH();
3781  {
3782  ErrorData *edata;
3783 
3784  /* Save error info */
3785  MemoryContextSwitchTo(oldcontext);
3786  edata = CopyErrorData();
3787  FlushErrorState();
3788 
3789  /* Abort the inner transaction */
3791  MemoryContextSwitchTo(oldcontext);
3792  CurrentResourceOwner = oldowner;
3793 
3794  /* Punt the error to Perl */
3795  croak_cstr(edata->message);
3796 
3797  /* Can't get here, but keep compiler quiet */
3798  return NULL;
3799  }
3800  PG_END_TRY();
3801 
3802  return ret_hv;
3803 }
3804 
3805 SV *
3806 plperl_spi_query_prepared(char *query, int argc, SV **argv)
3807 {
3808  int i;
3809  char *nulls;
3810  Datum *argvalues;
3811  plperl_query_desc *qdesc;
3812  plperl_query_entry *hash_entry;
3813  SV *cursor;
3814  Portal portal = NULL;
3815 
3816  /*
3817  * Execute the query inside a sub-transaction, so we can cope with errors
3818  * sanely
3819  */
3820  MemoryContext oldcontext = CurrentMemoryContext;
3822 
3824 
3826  /* Want to run inside function's memory context */
3827  MemoryContextSwitchTo(oldcontext);
3828 
3829  PG_TRY();
3830  {
3831  /************************************************************
3832  * Fetch the saved plan descriptor, see if it's o.k.
3833  ************************************************************/
3834  hash_entry = hash_search(plperl_active_interp->query_hash, query,
3835  HASH_FIND, NULL);
3836  if (hash_entry == NULL)
3837  elog(ERROR, "spi_query_prepared: Invalid prepared query passed");
3838 
3839  qdesc = hash_entry->query_data;
3840  if (qdesc == NULL)
3841  elog(ERROR, "spi_query_prepared: plperl query_hash value vanished");
3842 
3843  if (qdesc->nargs != argc)
3844  elog(ERROR, "spi_query_prepared: expected %d argument(s), %d passed",
3845  qdesc->nargs, argc);
3846 
3847  /************************************************************
3848  * Set up arguments
3849  ************************************************************/
3850  if (argc > 0)
3851  {
3852  nulls = (char *) palloc(argc);
3853  argvalues = (Datum *) palloc(argc * sizeof(Datum));
3854  }
3855  else
3856  {
3857  nulls = NULL;
3858  argvalues = NULL;
3859  }
3860 
3861  for (i = 0; i < argc; i++)
3862  {
3863  bool isnull;
3864 
3865  argvalues[i] = plperl_sv_to_datum(argv[i],
3866  qdesc->argtypes[i],
3867  -1,
3868  NULL,
3869  &qdesc->arginfuncs[i],
3870  qdesc->argtypioparams[i],
3871  &isnull);
3872  nulls[i] = isnull ? 'n' : ' ';
3873  }
3874 
3875  /************************************************************
3876  * go
3877  ************************************************************/
3878  portal = SPI_cursor_open(NULL, qdesc->plan, argvalues, nulls,
3879  current_call_data->prodesc->fn_readonly);
3880  if (argc > 0)
3881  {
3882  pfree(argvalues);
3883  pfree(nulls);
3884  }
3885  if (portal == NULL)
3886  elog(ERROR, "SPI_cursor_open() failed:%s",
3888 
3889  cursor = cstr2sv(portal->name);
3890 
3891  PinPortal(portal);
3892 
3893  /* Commit the inner transaction, return to outer xact context */
3895  MemoryContextSwitchTo(oldcontext);
3896  CurrentResourceOwner = oldowner;
3897  }
3898  PG_CATCH();
3899  {
3900  ErrorData *edata;
3901 
3902  /* Save error info */
3903  MemoryContextSwitchTo(oldcontext);
3904  edata = CopyErrorData();
3905  FlushErrorState();
3906 
3907  /* Abort the inner transaction */
3909  MemoryContextSwitchTo(oldcontext);
3910  CurrentResourceOwner = oldowner;
3911 
3912  /* Punt the error to Perl */
3913  croak_cstr(edata->message);
3914 
3915  /* Can't get here, but keep compiler quiet */
3916  return NULL;
3917  }
3918  PG_END_TRY();
3919 
3920  return cursor;
3921 }
3922 
3923 void
3925 {
3926  SPIPlanPtr plan;
3927  plperl_query_desc *qdesc;
3928  plperl_query_entry *hash_entry;
3929 
3931 
3932  hash_entry = hash_search(plperl_active_interp->query_hash, query,
3933  HASH_FIND, NULL);
3934  if (hash_entry == NULL)
3935  elog(ERROR, "spi_freeplan: Invalid prepared query passed");
3936 
3937  qdesc = hash_entry->query_data;
3938  if (qdesc == NULL)
3939  elog(ERROR, "spi_freeplan: plperl query_hash value vanished");
3940  plan = qdesc->plan;
3941 
3942  /*
3943  * free all memory before SPI_freeplan, so if it dies, nothing will be
3944  * left over
3945  */
3946  hash_search(plperl_active_interp->query_hash, query,
3947  HASH_REMOVE, NULL);
3948 
3949  MemoryContextDelete(qdesc->plan_cxt);
3950 
3951  SPI_freeplan(plan);
3952 }
3953 
3954 void
3956 {
3957  MemoryContext oldcontext = CurrentMemoryContext;
3958 
3959  PG_TRY();
3960  {
3961  SPI_commit();
3963  }
3964  PG_CATCH();
3965  {
3966  ErrorData *edata;
3967 
3968  /* Save error info */
3969  MemoryContextSwitchTo(oldcontext);
3970  edata = CopyErrorData();
3971  FlushErrorState();
3972 
3973  /* Punt the error to Perl */
3974  croak_cstr(edata->message);
3975  }
3976  PG_END_TRY();
3977 }
3978 
3979 void
3981 {
3982  MemoryContext oldcontext = CurrentMemoryContext;
3983 
3984  PG_TRY();
3985  {
3986  SPI_rollback();
3988  }
3989  PG_CATCH();
3990  {
3991  ErrorData *edata;
3992 
3993  /* Save error info */
3994  MemoryContextSwitchTo(oldcontext);
3995  edata = CopyErrorData();
3996  FlushErrorState();
3997 
3998  /* Punt the error to Perl */
3999  croak_cstr(edata->message);
4000  }
4001  PG_END_TRY();
4002 }
4003 
4004 /*
4005  * Implementation of plperl's elog() function
4006  *
4007  * If the error level is less than ERROR, we'll just emit the message and
4008  * return. When it is ERROR, elog() will longjmp, which we catch and
4009  * turn into a Perl croak(). Note we are assuming that elog() can't have
4010  * any internal failures that are so bad as to require a transaction abort.
4011  *
4012  * The main reason this is out-of-line is to avoid conflicts between XSUB.h
4013  * and the PG_TRY macros.
4014  */
4015 void
4016 plperl_util_elog(int level, SV *msg)
4017 {
4018  MemoryContext oldcontext = CurrentMemoryContext;
4019  char *volatile cmsg = NULL;
4020 
4021  PG_TRY();
4022  {
4023  cmsg = sv2cstr(msg);
4024  elog(level, "%s", cmsg);
4025  pfree(cmsg);
4026  }
4027  PG_CATCH();
4028  {
4029  ErrorData *edata;
4030 
4031  /* Must reset elog.c's state */
4032  MemoryContextSwitchTo(oldcontext);
4033  edata = CopyErrorData();
4034  FlushErrorState();
4035 
4036  if (cmsg)
4037  pfree(cmsg);
4038 
4039  /* Punt the error to Perl */
4040  croak_cstr(edata->message);
4041  }
4042  PG_END_TRY();
4043 }
4044 
4045 /*
4046  * Store an SV into a hash table under a key that is a string assumed to be
4047  * in the current database's encoding.
4048  */
4049 static SV **
4050 hv_store_string(HV *hv, const char *key, SV *val)
4051 {
4052  dTHX;
4053  int32 hlen;
4054  char *hkey;
4055  SV **ret;
4056 
4057  hkey = pg_server_to_any(key, strlen(key), PG_UTF8);
4058 
4059  /*
4060  * hv_store() recognizes a negative klen parameter as meaning a UTF-8
4061  * encoded key.
4062  */
4063  hlen = -(int) strlen(hkey);
4064  ret = hv_store(hv, hkey, hlen, val, 0);
4065 
4066  if (hkey != key)
4067  pfree(hkey);
4068 
4069  return ret;
4070 }
4071 
4072 /*
4073  * Fetch an SV from a hash table under a key that is a string assumed to be
4074  * in the current database's encoding.
4075  */
4076 static SV **
4077 hv_fetch_string(HV *hv, const char *key)
4078 {
4079  dTHX;
4080  int32 hlen;
4081  char *hkey;
4082  SV **ret;
4083 
4084  hkey = pg_server_to_any(key, strlen(key), PG_UTF8);
4085 
4086  /* See notes in hv_store_string */
4087  hlen = -(int) strlen(hkey);
4088  ret = hv_fetch(hv, hkey, hlen, 0);
4089 
4090  if (hkey != key)
4091  pfree(hkey);
4092 
4093  return ret;
4094 }
4095 
4096 /*
4097  * Provide function name for PL/Perl execution errors
4098  */
4099 static void
4101 {
4102  char *procname = (char *) arg;
4103 
4104  if (procname)
4105  errcontext("PL/Perl function \"%s\"", procname);
4106 }
4107 
4108 /*
4109  * Provide function name for PL/Perl compilation errors
4110  */
4111 static void
4113 {
4114  char *procname = (char *) arg;
4115 
4116  if (procname)
4117  errcontext("compilation of PL/Perl function \"%s\"", procname);
4118 }
4119 
4120 /*
4121  * Provide error context for the inline handler
4122  */
4123 static void
4125 {
4126  errcontext("PL/Perl anonymous code block");
4127 }
4128 
4129 
4130 /*
4131  * Perl's own setlocale(), copied from POSIX.xs
4132  * (needed because of the calls to new_*())
4133  */
4134 #ifdef WIN32
4135 static char *
4136 setlocale_perl(int category, char *locale)
4137 {
4138  dTHX;
4139  char *RETVAL = setlocale(category, locale);
4140 
4141  if (RETVAL)
4142  {
4143 #ifdef USE_LOCALE_CTYPE
4144  if (category == LC_CTYPE
4145 #ifdef LC_ALL
4146  || category == LC_ALL
4147 #endif
4148  )
4149  {
4150  char *newctype;
4151 
4152 #ifdef LC_ALL
4153  if (category == LC_ALL)
4154  newctype = setlocale(LC_CTYPE, NULL);
4155  else
4156 #endif
4157  newctype = RETVAL;
4158  new_ctype(newctype);
4159  }
4160 #endif /* USE_LOCALE_CTYPE */
4161 #ifdef USE_LOCALE_COLLATE
4162  if (category == LC_COLLATE
4163 #ifdef LC_ALL
4164  || category == LC_ALL
4165 #endif
4166  )
4167  {
4168  char *newcoll;
4169 
4170 #ifdef LC_ALL
4171  if (category == LC_ALL)
4172  newcoll = setlocale(LC_COLLATE, NULL);
4173  else
4174 #endif
4175  newcoll = RETVAL;
4176  new_collate(newcoll);
4177  }
4178 #endif /* USE_LOCALE_COLLATE */
4179 
4180 #ifdef USE_LOCALE_NUMERIC
4181  if (category == LC_NUMERIC
4182 #ifdef LC_ALL
4183  || category == LC_ALL
4184 #endif
4185  )
4186  {
4187  char *newnum;
4188 
4189 #ifdef LC_ALL
4190  if (category == LC_ALL)
4191  newnum = setlocale(LC_NUMERIC, NULL);
4192  else
4193 #endif
4194  newnum = RETVAL;
4195  new_numeric(newnum);
4196  }
4197 #endif /* USE_LOCALE_NUMERIC */
4198  }
4199 
4200  return RETVAL;
4201 }
4202 
4203 #endif /* WIN32 */
int SPI_fnumber(TupleDesc tupdesc, const char *fname)
Definition: spi.c:1080
void tuplestore_putvalues(Tuplestorestate *state, TupleDesc tdesc, Datum *values, bool *isnull)
Definition: tuplestore.c:750
signed short int16
Definition: c.h:428
void UnpinPortal(Portal portal)
Definition: portalmem.c:380
Datum makeMdArrayResult(ArrayBuildState *astate, int ndims, int *dims, int *lbs, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5218
#define NIL
Definition: pg_list.h:65
#define HeUTF8(he)
Definition: plperl.h:184
static SV * plperl_ref_from_pg_array(Datum arg, Oid typid)
Definition: plperl.c:1462
FmgrInfo transform_proc
Definition: plperl.c:218
EXTERN_C void boot_PostgreSQL__InServer__SPI(pTHX_ CV *cv)
#define SPI_OK_CONNECT
Definition: spi.h:82
Oid get_transform_fromsql(Oid typid, Oid langid, List *trftypes)
Definition: lsyscache.c:2069
static char plperl_opmask[MAXO]
Definition: plperl.c:240
static PerlInterpreter * plperl_init_interp(void)
Definition: plperl.c:705
Definition: fmgr.h:56
Definition: plperl.c:201
static bool validate_plperl_function(plperl_proc_ptr *proc_ptr, HeapTuple procTup)
Definition: plperl.c:2650
#define CALLED_AS_EVENT_TRIGGER(fcinfo)
Definition: event_trigger.h:41
TupleDesc CreateTupleDescCopy(TupleDesc tupdesc)
Definition: tupdesc.c:111
static Datum plperl_func_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2384
#define IsA(nodeptr, _type_)
Definition: nodes.h:588
List * trftypes
Definition: plperl.c:113
void MemoryContextDelete(MemoryContext context)
Definition: mcxt.c:218
#define AllocSetContextCreate
Definition: memutils.h:173
#define PL_ppaddr
Definition: ppport.h:11735
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:207
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:1138
bool * arg_is_rowtype
Definition: plperl.c:125
void getTypeOutputInfo(Oid type, Oid *typOutput, bool *typIsVarlena)
Definition: lsyscache.c:2854
#define GETSTRUCT(TUP)
Definition: htup_details.h:654
#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:1307
HTAB * query_hash
Definition: plperl.c:89
static Datum plperl_array_to_datum(SV *src, Oid typid, int32 typmod)
Definition: plperl.c:1240
#define HASH_ELEM
Definition: hsearch.h:95
static char * plperl_on_init
Definition: plperl.c:234
static void plperl_init_shared_libs(pTHX)
Definition: plperl.c:2150
TupleDesc lookup_rowtype_tupdesc(Oid type_id, int32 typmod)
Definition: typcache.c:1827
static bool plperl_ending
Definition: plperl.c:238
uint32 TransactionId
Definition: c.h:587
FunctionCallInfo fcinfo
Definition: plperl.c:176
#define setlocale(a, b)
Definition: win32_port.h:446
ArrayBuildState * initArrayResult(Oid element_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5083
#define dTHX
Definition: ppport.h:11306
#define call_pv
Definition: ppport.h:14998
static void select_perl_context(bool trusted)
Definition: plperl.c:553
int SPI_connect_ext(int options)
Definition: spi.c:101
#define DEBUG3
Definition: elog.h:23
Oid GetUserId(void)
Definition: miscinit.c:495
SPIPlanPtr plan
Definition: plperl.c:192
EXTERN_C void boot_DynaLoader(pTHX_ CV *cv)
int SPI_connect(void)
Definition: spi.c:95
SV * plperl_spi_query(char *query)
Definition: plperl.c:3368
#define castNode(_type_, nodeptr)
Definition: nodes.h:606
static HeapTuple plperl_modify_tuple(HV *hvTD, TriggerData *tdata, HeapTuple otup)
Definition: plperl.c:1744
void on_proc_exit(pg_on_exit_callback function, Datum arg)
Definition: ipc.c:305
ErrorData * CopyErrorData(void)
Definition: elog.c:1560
Oid get_element_type(Oid typid)
Definition: lsyscache.c:2706
struct plperl_proc_desc plperl_proc_desc
#define PointerGetDatum(X)
Definition: postgres.h:600
#define GvCV_set(gv, cv)
Definition: plperl.h:191
#define TupleDescAttr(tupdesc, i)
Definition: tupdesc.h:92
Oid * argtypioparams
Definition: plperl.c:196
ResourceOwner CurrentResourceOwner
Definition: resowner.c:146
char * pstrdup(const char *in)
Definition: mcxt.c:1299
SPIPlanPtr SPI_prepare(const char *src, int nargs, Oid *argtypes)
Definition: spi.c:765
#define ALLOCSET_SMALL_SIZES
Definition: memutils.h:205
void ReleaseCurrentSubTransaction(void)
Definition: xact.c:4498
#define SizeForFunctionCallInfo(nargs)
Definition: fmgr.h:102
struct @11::@12 av[32]
static void set_interp_require(bool trusted)
Definition: plperl.c:490
int SPI_finish(void)
Definition: spi.c:182
struct plperl_interp_desc plperl_interp_desc
#define AV_SIZE_MAX
Definition: plperl.h:198
int get_func_arg_info(HeapTuple procTup, Oid **p_argtypes, char ***p_argnames, char **p_argmodes)
Definition: funcapi.c:1268
static MemoryContext MemoryContextSwitchTo(MemoryContext context)
Definition: palloc.h:109
Oid get_func_signature(Oid funcid, Oid **argtypes, int *nargs)
Definition: lsyscache.c:1667
SV * plperl_spi_fetchrow(char *cursor)
Definition: plperl.c:3440
Size entrysize
Definition: hsearch.h:76
#define gettext_noop(x)
Definition: c.h:1197
SPITupleTable * SPI_tuptable
Definition: spi.c:46
#define PL_sv_undef
Definition: ppport.h:11780
int errcode(int sqlerrcode)
Definition: elog.c:698
#define ERRSV
Definition: ppport.h:12444
static SV ** hv_fetch_string(HV *hv, const char *key)
Definition: plperl.c:4077
char get_typtype(Oid typid)
Definition: lsyscache.c:2576
MemoryContext fn_cxt
Definition: plperl.c:105
#define MemSet(start, val, len)
Definition: c.h:1008
static SV * plperl_hash_from_datum(Datum attr)
Definition: plperl.c:2979
char * format_type_be(Oid type_oid)
Definition: format_type.c:339
fmNodePtr context
Definition: fmgr.h:88
void plperl_spi_cursor_close(char *cursor)
Definition: plperl.c:3515
static plperl_interp_desc * plperl_active_interp
Definition: plperl.c:227
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
void MemoryContextReset(MemoryContext context)
Definition: mcxt.c:143
Portal SPI_cursor_open(const char *name, SPIPlanPtr plan, Datum *Values, const char *Nulls, bool read_only)
Definition: spi.c:1350
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, Datum *values, bool *isnull)
Definition: heaptuple.c:1020
#define DirectFunctionCall1(func, arg1)
Definition: fmgr.h:626
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:954
PerlInterpreter * interp
Definition: plperl.c:88
bool check_function_bodies
Definition: guc.c:587
static SV ** hv_store_string(HV *hv, const char *key, SV *val)
Definition: plperl.c:4050
unsigned int Oid
Definition: postgres_ext.h:31
HeapTuple * vals
Definition: spi.h:26
NameData subname
void SPI_rollback(void)
Definition: spi.c:338
#define TRIGGER_FIRED_AFTER(event)
Definition: trigger.h:130
Datum oidout(PG_FUNCTION_ARGS)
Definition: oid.c:127
void(* callback)(void *arg)
Definition: elog.h:247
FmgrInfo * arg_out_func
Definition: plperl.c:124
struct ErrorContextCallback * previous
Definition: elog.h:246
#define OidIsValid(objectId)
Definition: c.h:710
#define DatumGetHeapTupleHeader(X)
Definition: fmgr.h:295
SV * plperl_spi_prepare(char *query, int argc, SV **argv)
Definition: plperl.c:3531
plperl_proc_key proc_key
Definition: plperl.c:165
#define aTHX_
Definition: ppport.h:11333
static OP *(* pp_require_orig)(pTHX)
Definition: plperl.c:239
#define dVAR
Definition: ppport.h:12519
void FlushErrorState(void)
Definition: elog.c:1654
uint64 SPI_processed
Definition: spi.c:45
#define TRIGGER_FIRED_FOR_STATEMENT(event)
Definition: trigger.h:124
static void plperl_event_trigger_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2613
TupleDesc lookup_rowtype_tupdesc_domain(Oid type_id, int32 typmod, bool noError)
Definition: typcache.c:1883
HeapTuple tg_trigtuple
Definition: trigger.h:35
char * pg_server_to_any(const char *s, int len, int encoding)
Definition: mbutils.c:749
signed int int32
Definition: c.h:429
void plperl_spi_commit(void)
Definition: plperl.c:3955
#define PERL_UNUSED_VAR(x)
Definition: ppport.h:12293
static SV * split_array(plperl_array_info *info, int first, int last, int nest)
Definition: plperl.c:1541
char * OutputFunctionCall(FmgrInfo *flinfo, Datum val)
Definition: fmgr.c:1573
Portal SPI_cursor_find(const char *name)
Definition: spi.c:1699
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:2323
ErrorContextCallback * error_context_stack
Definition: elog.c:93
#define HeapTupleHeaderGetTypMod(tup)
Definition: htup_details.h:467
void plperl_spi_freeplan(char *query)
Definition: plperl.c:3924
#define NAMEDATALEN
List * oid_array_to_list(Datum datum)
Definition: pg_proc.c:1183
#define EXTERN_C
Definition: ppport.h:12379
int SPI_result
Definition: spi.c:47
#define sprintf
Definition: port.h:219
static void plperl_untrusted_init(void)
Definition: plperl.c:1038
Definition: dynahash.c:219
TupleDesc expectedDesc
Definition: execnodes.h:305
NVTYPE NV
Definition: ppport.h:12325
static Datum plperl_trigger_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2500
void pfree(void *pointer)
Definition: mcxt.c:1169
const char * name
Definition: portal.h:118
char typalign
Definition: pg_type.h:176
static SV * make_array_ref(plperl_array_info *info, int first, int last)
Definition: plperl.c:1575
#define TRIGGER_FIRED_BY_TRUNCATE(event)
Definition: trigger.h:118
bool fn_retisset
Definition: plperl.c:116
#define ObjectIdGetDatum(X)
Definition: postgres.h:551
#define ERROR
Definition: elog.h:46
NameData attname
Definition: pg_attribute.h:41
plperl_proc_desc * proc_ptr
Definition: plperl.c:166
#define DatumGetCString(X)
Definition: postgres.h:610
ItemPointerData fn_tid
Definition: plperl.c:108
fmNodePtr resultinfo
Definition: fmgr.h:89
bool CheckFunctionValidatorAccess(Oid validatorOid, Oid functionOid)
Definition: fmgr.c:2035
#define SPI_OPT_NONATOMIC
Definition: spi.h:100
char * tgname
Definition: reltrigger.h:27
#define newSVuv(uv)
Definition: ppport.h:14511
NullableDatum args[FLEXIBLE_ARRAY_MEMBER]
Definition: fmgr.h:95
#define ARR_DIMS(a)
Definition: array.h:287
void fmgr_info(Oid functionId, FmgrInfo *finfo)
Definition: fmgr.c:126
const char * event
Definition: event_trigger.h:27
Definition: guc.h:75
void EmitWarningsOnPlaceholders(const char *className)
Definition: guc.c:9326
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:577
FmgrInfo result_in_func
Definition: plperl.c:120
#define OidFunctionCall1(functionId, arg1)
Definition: fmgr.h:664
const char * SPI_result_code_string(int code)
Definition: spi.c:1877
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:195
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:2697
int SPI_keepplan(SPIPlanPtr plan)
Definition: spi.c:881
Datum plperl_call_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:1834
static void plperl_trusted_init(void)
Definition: plperl.c:957
void RollbackAndReleaseCurrentSubTransaction(void)
Definition: xact.c:4532
void PinPortal(Portal portal)
Definition: portalmem.c:371
#define PG_GETARG_OID(n)
Definition: fmgr.h:275
void check_stack_depth(void)
Definition: postgres.c:3469
static void plperl_fini(int code, Datum arg)
Definition: plperl.c:509
#define SPI_ERROR_NOATTRIBUTE
Definition: spi.h:76
#define MAXDIM
Definition: array.h:75
#define pTHX_
Definition: ppport.h:11321
#define CStringGetDatum(X)
Definition: postgres.h:622
Definition: type.h:130
HTAB * hash_create(const char *tabname, long nelem, const HASHCTL *info, int flags)
Definition: dynahash.c:349
static void activate_interpreter(plperl_interp_desc *interp_desc)
Definition: plperl.c:684
FormData_pg_attribute * Form_pg_attribute
Definition: pg_attribute.h:207
static Datum plperl_hash_to_datum(SV *src, TupleDesc td)
Definition: plperl.c:1126
Oid * argtypes
Definition: plperl.c:194
MemoryContext CurrentMemoryContext
Definition: mcxt.c:42
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:2602
static void plperl_exec_callback(void *arg)
Definition: plperl.c:4100
void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo, MemoryContext mcxt)
Definition: fmgr.c:136
#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:2821
int SPI_register_trigger_data(TriggerData *tdata)
Definition: spi.c:3240
Datum value
Definition: postgres.h:422
void plperl_util_elog(int level, SV *msg)
Definition: plperl.c:4016
Oid * arg_arraytype
Definition: plperl.c:126
MemoryContext TopMemoryContext
Definition: mcxt.c:48
Oid rd_id
Definition: rel.h:111
unsigned long fn_refcount
Definition: plperl.c:106
char * plperl_sv_to_literal(SV *sv, char *fqtypename)
Definition: plperl.c:1428
Definition: guc.h:72
#define call_sv
Definition: ppport.h:15060
PG_MODULE_MAGIC
Definition: plperl.c:58
void SPI_commit(void)
Definition: spi.c:280
#define WARNING
Definition: elog.h:40
#define heap_getattr(tup, attnum, tupleDesc, isnull)
Definition: htup_details.h:761
void SPI_freetuptable(SPITupleTable *tuptable)
Definition: spi.c:1291
HeapTuple SearchSysCache1(int cacheId, Datum key1)
Definition: syscache.c:1127
char ** tgargs
Definition: reltrigger.h:41
#define TRIGGER_FIRED_BY_DELETE(event)
Definition: trigger.h:112
Tuplestorestate * tuplestore_begin_heap(bool randomAccess, bool interXact, int maxKBytes)
Definition: tuplestore.c:318
#define HASH_BLOBS
Definition: hsearch.h:97
#define PG_FINALLY()
Definition: elog.h:330
#define TextDatumGetCString(d)
Definition: builtins.h:87
static void plperl_return_next_internal(SV *sv)
Definition: plperl.c:3239
Datum regtypein(PG_FUNCTION_ARGS)
Definition: regproc.c:1251
Oid is_trigger
Definition: plperl.c:159
void * palloc0(Size size)
Definition: mcxt.c:1093
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:9273
uintptr_t Datum
Definition: postgres.h:411
SV * plperl_spi_query_prepared(char *query, int argc, SV **argv)
Definition: plperl.c:3806
void ReleaseSysCache(HeapTuple tuple)
Definition: syscache.c:1175
FmgrInfo * flinfo
Definition: fmgr.h:87
Datum SysCacheGetAttr(int cacheId, HeapTuple tup, AttrNumber attributeNumber, bool *isNull)
Definition: syscache.c:1388
static void free_plperl_function(plperl_proc_desc *prodesc)
Definition: plperl.c:2679
FmgrInfo * arginfuncs
Definition: plperl.c:195
static void croak_cstr(const char *str)
#define HeapTupleHeaderGetTypeId(tup)
Definition: htup_details.h:457
Size keysize
Definition: hsearch.h:75
int work_mem
Definition: globals.c:124
#define newRV_inc(sv)
Definition: ppport.h:15232
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:110
HeapTuple tg_newtuple
Definition: trigger.h:36
static void plperl_destroy_interp(PerlInterpreter **)
Definition: plperl.c:918
bool elem_is_rowtype
Definition: plperl.c:213
#define newRV_noinc(sv)
Definition: ppport.h:15239
FormData_pg_proc * Form_pg_proc
Definition: pg_proc.h:136
static SV * cstr2sv(const char *str)
void parseTypeString(const char *str, Oid *typeid_p, int32 *typmod_p, bool missing_ok)
Definition: parse_type.c:782
Datum InputFunctionCall(FmgrInfo *flinfo, char *str, Oid typioparam, int32 typmod)
Definition: fmgr.c:1529
#define UV_MAX
Definition: ppport.h:11685
char * SPI_getrelname(Relation rel)
Definition: spi.c:1231
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:1505
Oid fn_oid
Definition: fmgr.h:59
#define ereport(elevel,...)
Definition: elog.h:157
int allowedModes
Definition: execnodes.h:306
TupleDesc ret_tdesc
Definition: plperl.c:179
static void plperl_inline_callback(void *arg)
Definition: plperl.c:4124
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:1613
#define PG_RETURN_VOID()
Definition: fmgr.h:349
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:308
#define PG_CATCH()
Definition: elog.h:323
#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:804
static bool plperl_use_strict
Definition: plperl.c:233
TriggerEvent tg_event
Definition: trigger.h:33
void BeginInternalSubTransaction(const char *name)
Definition: xact.c:4427
SV * reference
Definition: plperl.c:109
char * SPI_getnspname(Relation rel)
Definition: spi.c:1237
FormData_pg_type * Form_pg_type
Definition: pg_type.h:261
void plperl_return_next(SV *sv)
Definition: plperl.c:3211
#define SPI_OK_FINISH
Definition: spi.h:83
void MemoryContextSetIdentifier(MemoryContext context, const char *id)
Definition: mcxt.c:336
static SV * plperl_event_trigger_build_args(FunctionCallInfo fcinfo)
Definition: plperl.c:1726
#define HeapTupleHeaderGetRawXmin(tup)
Definition: htup_details.h:308
#define PG_RE_THROW()
Definition: elog.h:354
static char * strip_trailing_ws(const char *msg)
Definition: plperl.c:1061
#define HeapTupleGetDatum(tuple)
Definition: funcapi.h:220
void * hash_seq_search(HASH_SEQ_STATUS *status)
Definition: dynahash.c:1436
static char * plperl_on_plperlu_init
Definition: plperl.c:236
MemoryContext ecxt_per_query_memory
Definition: execnodes.h:234
#define ARR_NDIM(a)
Definition: array.h:283
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:1426
const char * name
Definition: encode.c:561
static HeapTuple plperl_build_tuple_result(HV *perlhash, TupleDesc td)
Definition: plperl.c:1075
FmgrInfo proc
Definition: plperl.c:217
Oid get_transform_tosql(Oid typid, Oid langid, List *trftypes)
Definition: lsyscache.c:2090
Tuplestorestate * setResult
Definition: execnodes.h:311
#define DatumGetPointer(X)
Definition: postgres.h:593
static void check_spi_usage_allowed(void)
Definition: plperl.c:3087
#define pTHX
Definition: ppport.h:11317
PG_FUNCTION_INFO_V1(plperl_call_handler)
#define TRIGGER_FIRED_BEFORE(event)
Definition: trigger.h:127
void deconstruct_array(ArrayType *array, Oid elmtype, int elmlen, bool elmbyval, char elmalign, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3491
static void plperl_compile_callback(void *arg)
Definition: plperl.c:4112
int SPI_freeplan(SPIPlanPtr plan)
Definition: spi.c:930
static Datum values[MAXATTR]
Definition: bootstrap.c:156
void SPI_cursor_close(Portal portal)
Definition: spi.c:1767
#define TRIGGER_FIRED_INSTEAD(event)
Definition: trigger.h:133
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:5122
Oid get_base_element_type(Oid typid)
Definition: lsyscache.c:2779
ExprContext * econtext
Definition: execnodes.h:304
Oid tdtypeid
Definition: tupdesc.h:82
bool * nulls
Definition: plperl.c:215
static OP * pp_require_safe(pTHX)
Definition: plperl.c:880
static HTAB * plperl_interp_hash
Definition: plperl.c:225
#define TRIGGER_FIRED_BY_INSERT(event)
Definition: trigger.h:109
TupleDesc setDesc
Definition: execnodes.h:312
char * OidOutputFunctionCall(Oid functionId, Datum val)
Definition: fmgr.c:1653
FormData_pg_language * Form_pg_language
Definition: pg_language.h:65
void * palloc(Size size)
Definition: mcxt.c:1062
Datum plperlu_validator(PG_FUNCTION_ARGS)
Definition: plperl.c:2065
int errmsg(const char *fmt,...)
Definition: elog.c:909
void plperl_spi_rollback(void)
Definition: plperl.c:3980
static SV * plperl_hash_from_tuple(HeapTuple tuple, TupleDesc tupdesc, bool include_generated)
Definition: plperl.c:3007
#define get_sv
Definition: ppport.h:12463
bool fn_retistuple
Definition: plperl.c:115
#define elog(elevel,...)
Definition: elog.h:232
Datum plperl_inline_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:1876
int i
void FloatExceptionHandler(SIGNAL_ARGS)
Definition: postgres.c:2970
Oid getTypeIOParam(HeapTuple typeTuple)
Definition: lsyscache.c:2250
void pg_bindtextdomain(const char *domain)
Definition: miscinit.c:1700
Datum * elements
Definition: plperl.c:214
#define FunctionCall1(flinfo, arg1)
Definition: fmgr.h:644
int16 tgnargs
Definition: reltrigger.h:38
#define NameStr(name)
Definition: c.h:681
#define errcontext
Definition: elog.h:204
static char * locale
Definition: initdb.c:126
static HV * plperl_spi_execute_fetch_result(SPITupleTable *, uint64, int)
Definition: plperl.c:3159
void * arg
struct plperl_query_entry plperl_query_entry
void SPI_cursor_fetch(Portal portal, bool forward, long count)
Definition: spi.c:1711
static void plperl_create_sub(plperl_proc_desc *desc, const char *s, Oid fn_oid)
Definition: plperl.c:2077
char * proname
Definition: plperl.c:104
char * source_text
Definition: parsenodes.h:3019
#define PG_FUNCTION_ARGS
Definition: fmgr.h:193
void SPI_start_transaction(void)
Definition: spi.c:218
plperl_proc_desc * prodesc
Definition: plperl.c:175
#define CHECK_FOR_INTERRUPTS()
Definition: miscadmin.h:120
TransactionId fn_xmin
Definition: plperl.c:107
HV * plperl_spi_exec(char *query, int limit)
Definition: plperl.c:3099
static void _sv_to_datum_finfo(Oid typid, FmgrInfo *finfo, Oid *typioparam)
Definition: plperl.c:1284
ExprDoneCond isDone
Definition: execnodes.h:309
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:1165
#define HASH_STRINGS
Definition: hsearch.h:96
static void static void status(const char *fmt,...) pg_attribute_printf(1
Definition: pg_regress.c:229
#define ReleaseTupleDesc(tupdesc)
Definition: tupdesc.h:122
#define PG_TRY()
Definition: elog.h:313
plperl_interp_desc * interp
Definition: plperl.c:110
#define TRIGGER_FIRED_FOR_ROW(event)
Definition: trigger.h:121
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:11779
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:9187
Definition: pg_list.h:50
#define snprintf
Definition: port.h:217
Datum plperl_validator(PG_FUNCTION_ARGS)
Definition: plperl.c:1971
static plperl_call_data * current_call_data
Definition: plperl.c:243
#define TRIGGER_FIRED_BY_UPDATE(event)
Definition: trigger.h:115
#define ARR_ELEMTYPE(a)
Definition: array.h:285
Datum plperlu_call_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2049
Datum plperlu_inline_handler(PG_FUNCTION_ARGS)
Definition: plperl.c:2057
long val
Definition: informix.c:664
HV * plperl_spi_exec_prepared(char *query, HV *attr, int argc, SV **argv)
Definition: plperl.c:3679
#define isGV_with_GP(gv)
Definition: ppport.h:15695
#define PG_END_TRY()
Definition: elog.h:338
char * message
Definition: elog.h:382
static SV * plperl_call_perl_trigger_func(plperl_proc_desc *desc, FunctionCallInfo fcinfo, SV *td)
Definition: plperl.c:2255
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:2162
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:501
#define PG_USED_FOR_ASSERTS_ONLY
Definition: c.h:155
struct plperl_proc_ptr plperl_proc_ptr
Relation tg_relation
Definition: trigger.h:34
#define HeapTupleHeaderGetDatumLength(tup)
Definition: htup_details.h:451
#define DatumGetArrayTypeP(X)
Definition: array.h:254
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:2272
plperl_query_desc * query_data
Definition: plperl.c:204