Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * aclchk.c
4 : * Routines to check access control permissions.
5 : *
6 : * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
7 : * Portions Copyright (c) 1994, Regents of the University of California
8 : *
9 : *
10 : * IDENTIFICATION
11 : * src/backend/catalog/aclchk.c
12 : *
13 : * NOTES
14 : * See acl.h.
15 : *
16 : * The xxx_aclmask() functions in this file are wrappers around
17 : * acl.c's aclmask() function; see that for basic usage information.
18 : * The wrapper functions add object-type-specific lookup capability.
19 : * Generally, they will throw error if the object doesn't exist.
20 : *
21 : * The xxx_aclmask_ext() functions add the ability to not throw
22 : * error if the object doesn't exist. If their "is_missing" argument
23 : * isn't NULL, then when the object isn't found they will set
24 : * *is_missing = true and return zero (no privileges) instead of
25 : * throwing an error. Caller must initialize *is_missing = false.
26 : *
27 : * The xxx_aclcheck() functions are simplified wrappers around the
28 : * corresponding xxx_aclmask() functions, simply returning ACLCHECK_OK
29 : * if any of the privileges specified in "mode" are held, and otherwise
30 : * a suitable error code (in practice, always ACLCHECK_NO_PRIV).
31 : * Again, they will throw error if the object doesn't exist.
32 : *
33 : * The xxx_aclcheck_ext() functions add the ability to not throw
34 : * error if the object doesn't exist. Their "is_missing" argument
35 : * works similarly to the xxx_aclmask_ext() functions.
36 : *
37 : *-------------------------------------------------------------------------
38 : */
39 : #include "postgres.h"
40 :
41 : #include "access/genam.h"
42 : #include "access/heapam.h"
43 : #include "access/htup_details.h"
44 : #include "access/sysattr.h"
45 : #include "access/tableam.h"
46 : #include "access/xact.h"
47 : #include "catalog/binary_upgrade.h"
48 : #include "catalog/catalog.h"
49 : #include "catalog/dependency.h"
50 : #include "catalog/indexing.h"
51 : #include "catalog/objectaccess.h"
52 : #include "catalog/pg_authid.h"
53 : #include "catalog/pg_class.h"
54 : #include "catalog/pg_database.h"
55 : #include "catalog/pg_default_acl.h"
56 : #include "catalog/pg_foreign_data_wrapper.h"
57 : #include "catalog/pg_foreign_server.h"
58 : #include "catalog/pg_init_privs.h"
59 : #include "catalog/pg_language.h"
60 : #include "catalog/pg_largeobject.h"
61 : #include "catalog/pg_largeobject_metadata.h"
62 : #include "catalog/pg_namespace.h"
63 : #include "catalog/pg_parameter_acl.h"
64 : #include "catalog/pg_proc.h"
65 : #include "catalog/pg_tablespace.h"
66 : #include "catalog/pg_type.h"
67 : #include "commands/dbcommands.h"
68 : #include "commands/defrem.h"
69 : #include "commands/event_trigger.h"
70 : #include "commands/extension.h"
71 : #include "commands/proclang.h"
72 : #include "commands/tablespace.h"
73 : #include "foreign/foreign.h"
74 : #include "miscadmin.h"
75 : #include "nodes/makefuncs.h"
76 : #include "parser/parse_func.h"
77 : #include "parser/parse_type.h"
78 : #include "utils/acl.h"
79 : #include "utils/aclchk_internal.h"
80 : #include "utils/builtins.h"
81 : #include "utils/fmgroids.h"
82 : #include "utils/guc.h"
83 : #include "utils/lsyscache.h"
84 : #include "utils/rel.h"
85 : #include "utils/syscache.h"
86 :
87 : /*
88 : * Internal format used by ALTER DEFAULT PRIVILEGES.
89 : */
90 : typedef struct
91 : {
92 : Oid roleid; /* owning role */
93 : Oid nspid; /* namespace, or InvalidOid if none */
94 : /* remaining fields are same as in InternalGrant: */
95 : bool is_grant;
96 : ObjectType objtype;
97 : bool all_privs;
98 : AclMode privileges;
99 : List *grantees;
100 : bool grant_option;
101 : DropBehavior behavior;
102 : } InternalDefaultACL;
103 :
104 : /*
105 : * When performing a binary-upgrade, pg_dump will call a function to set
106 : * this variable to let us know that we need to populate the pg_init_privs
107 : * table for the GRANT/REVOKE commands while this variable is set to true.
108 : */
109 : bool binary_upgrade_record_init_privs = false;
110 :
111 : static void ExecGrantStmt_oids(InternalGrant *istmt);
112 : static void ExecGrant_Relation(InternalGrant *istmt);
113 : static void ExecGrant_common(InternalGrant *istmt, Oid classid, AclMode default_privs,
114 : void (*object_check) (InternalGrant *istmt, HeapTuple tuple));
115 : static void ExecGrant_Language_check(InternalGrant *istmt, HeapTuple tuple);
116 : static void ExecGrant_Largeobject(InternalGrant *istmt);
117 : static void ExecGrant_Type_check(InternalGrant *istmt, HeapTuple tuple);
118 : static void ExecGrant_Parameter(InternalGrant *istmt);
119 :
120 : static void SetDefaultACLsInSchemas(InternalDefaultACL *iacls, List *nspnames);
121 : static void SetDefaultACL(InternalDefaultACL *iacls);
122 :
123 : static List *objectNamesToOids(ObjectType objtype, List *objnames,
124 : bool is_grant);
125 : static List *objectsInSchemaToOids(ObjectType objtype, List *nspnames);
126 : static List *getRelationsInNamespace(Oid namespaceId, char relkind);
127 : static void expand_col_privileges(List *colnames, Oid table_oid,
128 : AclMode this_privileges,
129 : AclMode *col_privileges,
130 : int num_col_privileges);
131 : static void expand_all_col_privileges(Oid table_oid, Form_pg_class classForm,
132 : AclMode this_privileges,
133 : AclMode *col_privileges,
134 : int num_col_privileges);
135 : static AclMode string_to_privilege(const char *privname);
136 : static const char *privilege_to_string(AclMode privilege);
137 : static AclMode restrict_and_check_grant(bool is_grant, AclMode avail_goptions,
138 : bool all_privs, AclMode privileges,
139 : Oid objectId, Oid grantorId,
140 : ObjectType objtype, const char *objname,
141 : AttrNumber att_number, const char *colname);
142 : static AclMode pg_aclmask(ObjectType objtype, Oid object_oid, AttrNumber attnum,
143 : Oid roleid, AclMode mask, AclMaskHow how);
144 : static AclMode object_aclmask(Oid classid, Oid objectid, Oid roleid,
145 : AclMode mask, AclMaskHow how);
146 : static AclMode object_aclmask_ext(Oid classid, Oid objectid, Oid roleid,
147 : AclMode mask, AclMaskHow how,
148 : bool *is_missing);
149 : static AclMode pg_attribute_aclmask(Oid table_oid, AttrNumber attnum,
150 : Oid roleid, AclMode mask, AclMaskHow how);
151 : static AclMode pg_attribute_aclmask_ext(Oid table_oid, AttrNumber attnum,
152 : Oid roleid, AclMode mask,
153 : AclMaskHow how, bool *is_missing);
154 : static AclMode pg_class_aclmask_ext(Oid table_oid, Oid roleid,
155 : AclMode mask, AclMaskHow how,
156 : bool *is_missing);
157 : static AclMode pg_parameter_acl_aclmask(Oid acl_oid, Oid roleid,
158 : AclMode mask, AclMaskHow how);
159 : static AclMode pg_largeobject_aclmask_snapshot(Oid lobj_oid, Oid roleid,
160 : AclMode mask, AclMaskHow how, Snapshot snapshot);
161 : static AclMode pg_namespace_aclmask_ext(Oid nsp_oid, Oid roleid,
162 : AclMode mask, AclMaskHow how,
163 : bool *is_missing);
164 : static AclMode pg_type_aclmask_ext(Oid type_oid, Oid roleid,
165 : AclMode mask, AclMaskHow how,
166 : bool *is_missing);
167 : static void recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
168 : Acl *new_acl);
169 : static void recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid,
170 : Acl *new_acl);
171 :
172 :
173 : /*
174 : * If is_grant is true, adds the given privileges for the list of
175 : * grantees to the existing old_acl. If is_grant is false, the
176 : * privileges for the given grantees are removed from old_acl.
177 : *
178 : * NB: the original old_acl is pfree'd.
179 : */
180 : static Acl *
181 33298 : merge_acl_with_grant(Acl *old_acl, bool is_grant,
182 : bool grant_option, DropBehavior behavior,
183 : List *grantees, AclMode privileges,
184 : Oid grantorId, Oid ownerId)
185 : {
186 : unsigned modechg;
187 : ListCell *j;
188 : Acl *new_acl;
189 :
190 33298 : modechg = is_grant ? ACL_MODECHG_ADD : ACL_MODECHG_DEL;
191 :
192 33298 : new_acl = old_acl;
193 :
194 66710 : foreach(j, grantees)
195 : {
196 : AclItem aclitem;
197 : Acl *newer_acl;
198 :
199 33424 : aclitem.ai_grantee = lfirst_oid(j);
200 :
201 : /*
202 : * Grant options can only be granted to individual roles, not PUBLIC.
203 : * The reason is that if a user would re-grant a privilege that he
204 : * held through PUBLIC, and later the user is removed, the situation
205 : * is impossible to clean up.
206 : */
207 33424 : if (is_grant && grant_option && aclitem.ai_grantee == ACL_ID_PUBLIC)
208 0 : ereport(ERROR,
209 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
210 : errmsg("grant options can only be granted to roles")));
211 :
212 33424 : aclitem.ai_grantor = grantorId;
213 :
214 : /*
215 : * The asymmetry in the conditions here comes from the spec. In
216 : * GRANT, the grant_option flag signals WITH GRANT OPTION, which means
217 : * to grant both the basic privilege and its grant option. But in
218 : * REVOKE, plain revoke revokes both the basic privilege and its grant
219 : * option, while REVOKE GRANT OPTION revokes only the option.
220 : */
221 33424 : ACLITEM_SET_PRIVS_GOPTIONS(aclitem,
222 : (is_grant || !grant_option) ? privileges : ACL_NO_RIGHTS,
223 : (!is_grant || grant_option) ? privileges : ACL_NO_RIGHTS);
224 :
225 33424 : newer_acl = aclupdate(new_acl, &aclitem, modechg, ownerId, behavior);
226 :
227 : /* avoid memory leak when there are many grantees */
228 33412 : pfree(new_acl);
229 33412 : new_acl = newer_acl;
230 : }
231 :
232 33286 : return new_acl;
233 : }
234 :
235 : /*
236 : * Restrict the privileges to what we can actually grant, and emit
237 : * the standards-mandated warning and error messages.
238 : */
239 : static AclMode
240 33138 : restrict_and_check_grant(bool is_grant, AclMode avail_goptions, bool all_privs,
241 : AclMode privileges, Oid objectId, Oid grantorId,
242 : ObjectType objtype, const char *objname,
243 : AttrNumber att_number, const char *colname)
244 : {
245 : AclMode this_privileges;
246 : AclMode whole_mask;
247 :
248 33138 : switch (objtype)
249 : {
250 17794 : case OBJECT_COLUMN:
251 17794 : whole_mask = ACL_ALL_RIGHTS_COLUMN;
252 17794 : break;
253 7406 : case OBJECT_TABLE:
254 7406 : whole_mask = ACL_ALL_RIGHTS_RELATION;
255 7406 : break;
256 160 : case OBJECT_SEQUENCE:
257 160 : whole_mask = ACL_ALL_RIGHTS_SEQUENCE;
258 160 : break;
259 284 : case OBJECT_DATABASE:
260 284 : whole_mask = ACL_ALL_RIGHTS_DATABASE;
261 284 : break;
262 6556 : case OBJECT_FUNCTION:
263 6556 : whole_mask = ACL_ALL_RIGHTS_FUNCTION;
264 6556 : break;
265 36 : case OBJECT_LANGUAGE:
266 36 : whole_mask = ACL_ALL_RIGHTS_LANGUAGE;
267 36 : break;
268 80 : case OBJECT_LARGEOBJECT:
269 80 : whole_mask = ACL_ALL_RIGHTS_LARGEOBJECT;
270 80 : break;
271 382 : case OBJECT_SCHEMA:
272 382 : whole_mask = ACL_ALL_RIGHTS_SCHEMA;
273 382 : break;
274 0 : case OBJECT_TABLESPACE:
275 0 : whole_mask = ACL_ALL_RIGHTS_TABLESPACE;
276 0 : break;
277 94 : case OBJECT_FDW:
278 94 : whole_mask = ACL_ALL_RIGHTS_FDW;
279 94 : break;
280 90 : case OBJECT_FOREIGN_SERVER:
281 90 : whole_mask = ACL_ALL_RIGHTS_FOREIGN_SERVER;
282 90 : break;
283 0 : case OBJECT_EVENT_TRIGGER:
284 0 : elog(ERROR, "grantable rights not supported for event triggers");
285 : /* not reached, but keep compiler quiet */
286 : return ACL_NO_RIGHTS;
287 122 : case OBJECT_TYPE:
288 122 : whole_mask = ACL_ALL_RIGHTS_TYPE;
289 122 : break;
290 134 : case OBJECT_PARAMETER_ACL:
291 134 : whole_mask = ACL_ALL_RIGHTS_PARAMETER_ACL;
292 134 : break;
293 0 : default:
294 0 : elog(ERROR, "unrecognized object type: %d", objtype);
295 : /* not reached, but keep compiler quiet */
296 : return ACL_NO_RIGHTS;
297 : }
298 :
299 : /*
300 : * If we found no grant options, consider whether to issue a hard error.
301 : * Per spec, having any privilege at all on the object will get you by
302 : * here.
303 : */
304 33138 : if (avail_goptions == ACL_NO_RIGHTS)
305 : {
306 66 : if (pg_aclmask(objtype, objectId, att_number, grantorId,
307 66 : whole_mask | ACL_GRANT_OPTION_FOR(whole_mask),
308 : ACLMASK_ANY) == ACL_NO_RIGHTS)
309 : {
310 30 : if (objtype == OBJECT_COLUMN && colname)
311 0 : aclcheck_error_col(ACLCHECK_NO_PRIV, objtype, objname, colname);
312 : else
313 30 : aclcheck_error(ACLCHECK_NO_PRIV, objtype, objname);
314 : }
315 : }
316 :
317 : /*
318 : * Restrict the operation to what we can actually grant or revoke, and
319 : * issue a warning if appropriate. (For REVOKE this isn't quite what the
320 : * spec says to do: the spec seems to want a warning only if no privilege
321 : * bits actually change in the ACL. In practice that behavior seems much
322 : * too noisy, as well as inconsistent with the GRANT case.)
323 : */
324 33108 : this_privileges = privileges & ACL_OPTION_TO_PRIVS(avail_goptions);
325 33108 : if (is_grant)
326 : {
327 9882 : if (this_privileges == 0)
328 : {
329 30 : if (objtype == OBJECT_COLUMN && colname)
330 0 : ereport(WARNING,
331 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_GRANTED),
332 : errmsg("no privileges were granted for column \"%s\" of relation \"%s\"",
333 : colname, objname)));
334 : else
335 30 : ereport(WARNING,
336 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_GRANTED),
337 : errmsg("no privileges were granted for \"%s\"",
338 : objname)));
339 : }
340 9852 : else if (!all_privs && this_privileges != privileges)
341 : {
342 0 : if (objtype == OBJECT_COLUMN && colname)
343 0 : ereport(WARNING,
344 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_GRANTED),
345 : errmsg("not all privileges were granted for column \"%s\" of relation \"%s\"",
346 : colname, objname)));
347 : else
348 0 : ereport(WARNING,
349 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_GRANTED),
350 : errmsg("not all privileges were granted for \"%s\"",
351 : objname)));
352 : }
353 : }
354 : else
355 : {
356 23226 : if (this_privileges == 0)
357 : {
358 6 : if (objtype == OBJECT_COLUMN && colname)
359 0 : ereport(WARNING,
360 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_REVOKED),
361 : errmsg("no privileges could be revoked for column \"%s\" of relation \"%s\"",
362 : colname, objname)));
363 : else
364 6 : ereport(WARNING,
365 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_REVOKED),
366 : errmsg("no privileges could be revoked for \"%s\"",
367 : objname)));
368 : }
369 23220 : else if (!all_privs && this_privileges != privileges)
370 : {
371 0 : if (objtype == OBJECT_COLUMN && colname)
372 0 : ereport(WARNING,
373 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_REVOKED),
374 : errmsg("not all privileges could be revoked for column \"%s\" of relation \"%s\"",
375 : colname, objname)));
376 : else
377 0 : ereport(WARNING,
378 : (errcode(ERRCODE_WARNING_PRIVILEGE_NOT_REVOKED),
379 : errmsg("not all privileges could be revoked for \"%s\"",
380 : objname)));
381 : }
382 : }
383 :
384 33108 : return this_privileges;
385 : }
386 :
387 : /*
388 : * Called to execute the utility commands GRANT and REVOKE
389 : */
390 : void
391 15382 : ExecuteGrantStmt(GrantStmt *stmt)
392 : {
393 : InternalGrant istmt;
394 : ListCell *cell;
395 : const char *errormsg;
396 : AclMode all_privileges;
397 :
398 15382 : if (stmt->grantor)
399 : {
400 : Oid grantor;
401 :
402 18 : grantor = get_rolespec_oid(stmt->grantor, false);
403 :
404 : /*
405 : * Currently, this clause is only for SQL compatibility, not very
406 : * interesting otherwise.
407 : */
408 18 : if (grantor != GetUserId())
409 6 : ereport(ERROR,
410 : (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
411 : errmsg("grantor must be current user")));
412 : }
413 :
414 : /*
415 : * Turn the regular GrantStmt into the InternalGrant form.
416 : */
417 15376 : istmt.is_grant = stmt->is_grant;
418 15376 : istmt.objtype = stmt->objtype;
419 :
420 : /* Collect the OIDs of the target objects */
421 15376 : switch (stmt->targtype)
422 : {
423 15346 : case ACL_TARGET_OBJECT:
424 30666 : istmt.objects = objectNamesToOids(stmt->objtype, stmt->objects,
425 15346 : stmt->is_grant);
426 15320 : break;
427 30 : case ACL_TARGET_ALL_IN_SCHEMA:
428 30 : istmt.objects = objectsInSchemaToOids(stmt->objtype, stmt->objects);
429 30 : break;
430 : /* ACL_TARGET_DEFAULTS should not be seen here */
431 0 : default:
432 0 : elog(ERROR, "unrecognized GrantStmt.targtype: %d",
433 : (int) stmt->targtype);
434 : }
435 :
436 : /* all_privs to be filled below */
437 : /* privileges to be filled below */
438 15350 : istmt.col_privs = NIL; /* may get filled below */
439 15350 : istmt.grantees = NIL; /* filled below */
440 15350 : istmt.grant_option = stmt->grant_option;
441 15350 : istmt.behavior = stmt->behavior;
442 :
443 : /*
444 : * Convert the RoleSpec list into an Oid list. Note that at this point we
445 : * insert an ACL_ID_PUBLIC into the list if appropriate, so downstream
446 : * there shouldn't be any additional work needed to support this case.
447 : */
448 30790 : foreach(cell, stmt->grantees)
449 : {
450 15446 : RoleSpec *grantee = (RoleSpec *) lfirst(cell);
451 : Oid grantee_uid;
452 :
453 15446 : switch (grantee->roletype)
454 : {
455 11896 : case ROLESPEC_PUBLIC:
456 11896 : grantee_uid = ACL_ID_PUBLIC;
457 11896 : break;
458 3550 : default:
459 3550 : grantee_uid = get_rolespec_oid(grantee, false);
460 3544 : break;
461 : }
462 15440 : istmt.grantees = lappend_oid(istmt.grantees, grantee_uid);
463 : }
464 :
465 : /*
466 : * Convert stmt->privileges, a list of AccessPriv nodes, into an AclMode
467 : * bitmask. Note: objtype can't be OBJECT_COLUMN.
468 : */
469 15344 : switch (stmt->objtype)
470 : {
471 7790 : case OBJECT_TABLE:
472 :
473 : /*
474 : * Because this might be a sequence, we test both relation and
475 : * sequence bits, and later do a more limited test when we know
476 : * the object type.
477 : */
478 7790 : all_privileges = ACL_ALL_RIGHTS_RELATION | ACL_ALL_RIGHTS_SEQUENCE;
479 7790 : errormsg = gettext_noop("invalid privilege type %s for relation");
480 7790 : break;
481 16 : case OBJECT_SEQUENCE:
482 16 : all_privileges = ACL_ALL_RIGHTS_SEQUENCE;
483 16 : errormsg = gettext_noop("invalid privilege type %s for sequence");
484 16 : break;
485 274 : case OBJECT_DATABASE:
486 274 : all_privileges = ACL_ALL_RIGHTS_DATABASE;
487 274 : errormsg = gettext_noop("invalid privilege type %s for database");
488 274 : break;
489 26 : case OBJECT_DOMAIN:
490 26 : all_privileges = ACL_ALL_RIGHTS_TYPE;
491 26 : errormsg = gettext_noop("invalid privilege type %s for domain");
492 26 : break;
493 6444 : case OBJECT_FUNCTION:
494 6444 : all_privileges = ACL_ALL_RIGHTS_FUNCTION;
495 6444 : errormsg = gettext_noop("invalid privilege type %s for function");
496 6444 : break;
497 42 : case OBJECT_LANGUAGE:
498 42 : all_privileges = ACL_ALL_RIGHTS_LANGUAGE;
499 42 : errormsg = gettext_noop("invalid privilege type %s for language");
500 42 : break;
501 62 : case OBJECT_LARGEOBJECT:
502 62 : all_privileges = ACL_ALL_RIGHTS_LARGEOBJECT;
503 62 : errormsg = gettext_noop("invalid privilege type %s for large object");
504 62 : break;
505 286 : case OBJECT_SCHEMA:
506 286 : all_privileges = ACL_ALL_RIGHTS_SCHEMA;
507 286 : errormsg = gettext_noop("invalid privilege type %s for schema");
508 286 : break;
509 48 : case OBJECT_PROCEDURE:
510 48 : all_privileges = ACL_ALL_RIGHTS_FUNCTION;
511 48 : errormsg = gettext_noop("invalid privilege type %s for procedure");
512 48 : break;
513 6 : case OBJECT_ROUTINE:
514 6 : all_privileges = ACL_ALL_RIGHTS_FUNCTION;
515 6 : errormsg = gettext_noop("invalid privilege type %s for routine");
516 6 : break;
517 0 : case OBJECT_TABLESPACE:
518 0 : all_privileges = ACL_ALL_RIGHTS_TABLESPACE;
519 0 : errormsg = gettext_noop("invalid privilege type %s for tablespace");
520 0 : break;
521 110 : case OBJECT_TYPE:
522 110 : all_privileges = ACL_ALL_RIGHTS_TYPE;
523 110 : errormsg = gettext_noop("invalid privilege type %s for type");
524 110 : break;
525 92 : case OBJECT_FDW:
526 92 : all_privileges = ACL_ALL_RIGHTS_FDW;
527 92 : errormsg = gettext_noop("invalid privilege type %s for foreign-data wrapper");
528 92 : break;
529 76 : case OBJECT_FOREIGN_SERVER:
530 76 : all_privileges = ACL_ALL_RIGHTS_FOREIGN_SERVER;
531 76 : errormsg = gettext_noop("invalid privilege type %s for foreign server");
532 76 : break;
533 72 : case OBJECT_PARAMETER_ACL:
534 72 : all_privileges = ACL_ALL_RIGHTS_PARAMETER_ACL;
535 72 : errormsg = gettext_noop("invalid privilege type %s for parameter");
536 72 : break;
537 0 : default:
538 0 : elog(ERROR, "unrecognized GrantStmt.objtype: %d",
539 : (int) stmt->objtype);
540 : /* keep compiler quiet */
541 : all_privileges = ACL_NO_RIGHTS;
542 : errormsg = NULL;
543 : }
544 :
545 15344 : if (stmt->privileges == NIL)
546 : {
547 2032 : istmt.all_privs = true;
548 :
549 : /*
550 : * will be turned into ACL_ALL_RIGHTS_* by the internal routines
551 : * depending on the object type
552 : */
553 2032 : istmt.privileges = ACL_NO_RIGHTS;
554 : }
555 : else
556 : {
557 13312 : istmt.all_privs = false;
558 13312 : istmt.privileges = ACL_NO_RIGHTS;
559 :
560 27030 : foreach(cell, stmt->privileges)
561 : {
562 13742 : AccessPriv *privnode = (AccessPriv *) lfirst(cell);
563 : AclMode priv;
564 :
565 : /*
566 : * If it's a column-level specification, we just set it aside in
567 : * col_privs for the moment; but insist it's for a relation.
568 : */
569 13742 : if (privnode->cols)
570 : {
571 410 : if (stmt->objtype != OBJECT_TABLE)
572 0 : ereport(ERROR,
573 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
574 : errmsg("column privileges are only valid for relations")));
575 410 : istmt.col_privs = lappend(istmt.col_privs, privnode);
576 410 : continue;
577 : }
578 :
579 13332 : if (privnode->priv_name == NULL) /* parser mistake? */
580 0 : elog(ERROR, "AccessPriv node must specify privilege or columns");
581 13332 : priv = string_to_privilege(privnode->priv_name);
582 :
583 13332 : if (priv & ~((AclMode) all_privileges))
584 24 : ereport(ERROR,
585 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
586 : errmsg(errormsg, privilege_to_string(priv))));
587 :
588 13308 : istmt.privileges |= priv;
589 : }
590 : }
591 :
592 15320 : ExecGrantStmt_oids(&istmt);
593 15254 : }
594 :
595 : /*
596 : * ExecGrantStmt_oids
597 : *
598 : * Internal entry point for granting and revoking privileges.
599 : */
600 : static void
601 15532 : ExecGrantStmt_oids(InternalGrant *istmt)
602 : {
603 15532 : switch (istmt->objtype)
604 : {
605 7898 : case OBJECT_TABLE:
606 : case OBJECT_SEQUENCE:
607 7898 : ExecGrant_Relation(istmt);
608 7892 : break;
609 284 : case OBJECT_DATABASE:
610 284 : ExecGrant_common(istmt, DatabaseRelationId, ACL_ALL_RIGHTS_DATABASE, NULL);
611 284 : break;
612 140 : case OBJECT_DOMAIN:
613 : case OBJECT_TYPE:
614 140 : ExecGrant_common(istmt, TypeRelationId, ACL_ALL_RIGHTS_TYPE, ExecGrant_Type_check);
615 116 : break;
616 94 : case OBJECT_FDW:
617 94 : ExecGrant_common(istmt, ForeignDataWrapperRelationId, ACL_ALL_RIGHTS_FDW, NULL);
618 76 : break;
619 90 : case OBJECT_FOREIGN_SERVER:
620 90 : ExecGrant_common(istmt, ForeignServerRelationId, ACL_ALL_RIGHTS_FOREIGN_SERVER, NULL);
621 78 : break;
622 6514 : case OBJECT_FUNCTION:
623 : case OBJECT_PROCEDURE:
624 : case OBJECT_ROUTINE:
625 6514 : ExecGrant_common(istmt, ProcedureRelationId, ACL_ALL_RIGHTS_FUNCTION, NULL);
626 6514 : break;
627 42 : case OBJECT_LANGUAGE:
628 42 : ExecGrant_common(istmt, LanguageRelationId, ACL_ALL_RIGHTS_LANGUAGE, ExecGrant_Language_check);
629 36 : break;
630 74 : case OBJECT_LARGEOBJECT:
631 74 : ExecGrant_Largeobject(istmt);
632 74 : break;
633 300 : case OBJECT_SCHEMA:
634 300 : ExecGrant_common(istmt, NamespaceRelationId, ACL_ALL_RIGHTS_SCHEMA, NULL);
635 300 : break;
636 0 : case OBJECT_TABLESPACE:
637 0 : ExecGrant_common(istmt, TableSpaceRelationId, ACL_ALL_RIGHTS_TABLESPACE, NULL);
638 0 : break;
639 96 : case OBJECT_PARAMETER_ACL:
640 96 : ExecGrant_Parameter(istmt);
641 96 : break;
642 0 : default:
643 0 : elog(ERROR, "unrecognized GrantStmt.objtype: %d",
644 : (int) istmt->objtype);
645 : }
646 :
647 : /*
648 : * Pass the info to event triggers about the just-executed GRANT. Note
649 : * that we prefer to do it after actually executing it, because that gives
650 : * the functions a chance to adjust the istmt with privileges actually
651 : * granted.
652 : */
653 15466 : if (EventTriggerSupportsObjectType(istmt->objtype))
654 15086 : EventTriggerCollectGrant(istmt);
655 15466 : }
656 :
657 : /*
658 : * objectNamesToOids
659 : *
660 : * Turn a list of object names of a given type into an Oid list.
661 : *
662 : * XXX: This function doesn't take any sort of locks on the objects whose
663 : * names it looks up. In the face of concurrent DDL, we might easily latch
664 : * onto an old version of an object, causing the GRANT or REVOKE statement
665 : * to fail.
666 : */
667 : static List *
668 15346 : objectNamesToOids(ObjectType objtype, List *objnames, bool is_grant)
669 : {
670 15346 : List *objects = NIL;
671 : ListCell *cell;
672 :
673 : Assert(objnames != NIL);
674 :
675 15346 : switch (objtype)
676 : {
677 7794 : case OBJECT_TABLE:
678 : case OBJECT_SEQUENCE:
679 15642 : foreach(cell, objnames)
680 : {
681 7848 : RangeVar *relvar = (RangeVar *) lfirst(cell);
682 : Oid relOid;
683 :
684 7848 : relOid = RangeVarGetRelid(relvar, NoLock, false);
685 7848 : objects = lappend_oid(objects, relOid);
686 : }
687 7794 : break;
688 274 : case OBJECT_DATABASE:
689 548 : foreach(cell, objnames)
690 : {
691 274 : char *dbname = strVal(lfirst(cell));
692 : Oid dbid;
693 :
694 274 : dbid = get_database_oid(dbname, false);
695 274 : objects = lappend_oid(objects, dbid);
696 : }
697 274 : break;
698 136 : case OBJECT_DOMAIN:
699 : case OBJECT_TYPE:
700 272 : foreach(cell, objnames)
701 : {
702 136 : List *typname = (List *) lfirst(cell);
703 : Oid oid;
704 :
705 136 : oid = typenameTypeId(NULL, makeTypeNameFromNameList(typname));
706 136 : objects = lappend_oid(objects, oid);
707 : }
708 136 : break;
709 6450 : case OBJECT_FUNCTION:
710 12912 : foreach(cell, objnames)
711 : {
712 6474 : ObjectWithArgs *func = (ObjectWithArgs *) lfirst(cell);
713 : Oid funcid;
714 :
715 6474 : funcid = LookupFuncWithArgs(OBJECT_FUNCTION, func, false);
716 6462 : objects = lappend_oid(objects, funcid);
717 : }
718 6438 : break;
719 42 : case OBJECT_LANGUAGE:
720 84 : foreach(cell, objnames)
721 : {
722 42 : char *langname = strVal(lfirst(cell));
723 : Oid oid;
724 :
725 42 : oid = get_language_oid(langname, false);
726 42 : objects = lappend_oid(objects, oid);
727 : }
728 42 : break;
729 80 : case OBJECT_LARGEOBJECT:
730 154 : foreach(cell, objnames)
731 : {
732 86 : Oid lobjOid = oidparse(lfirst(cell));
733 :
734 86 : if (!LargeObjectExists(lobjOid))
735 12 : ereport(ERROR,
736 : (errcode(ERRCODE_UNDEFINED_OBJECT),
737 : errmsg("large object %u does not exist",
738 : lobjOid)));
739 :
740 74 : objects = lappend_oid(objects, lobjOid);
741 : }
742 68 : break;
743 286 : case OBJECT_SCHEMA:
744 654 : foreach(cell, objnames)
745 : {
746 368 : char *nspname = strVal(lfirst(cell));
747 : Oid oid;
748 :
749 368 : oid = get_namespace_oid(nspname, false);
750 368 : objects = lappend_oid(objects, oid);
751 : }
752 286 : break;
753 42 : case OBJECT_PROCEDURE:
754 84 : foreach(cell, objnames)
755 : {
756 42 : ObjectWithArgs *func = (ObjectWithArgs *) lfirst(cell);
757 : Oid procid;
758 :
759 42 : procid = LookupFuncWithArgs(OBJECT_PROCEDURE, func, false);
760 42 : objects = lappend_oid(objects, procid);
761 : }
762 42 : break;
763 0 : case OBJECT_ROUTINE:
764 0 : foreach(cell, objnames)
765 : {
766 0 : ObjectWithArgs *func = (ObjectWithArgs *) lfirst(cell);
767 : Oid routid;
768 :
769 0 : routid = LookupFuncWithArgs(OBJECT_ROUTINE, func, false);
770 0 : objects = lappend_oid(objects, routid);
771 : }
772 0 : break;
773 0 : case OBJECT_TABLESPACE:
774 0 : foreach(cell, objnames)
775 : {
776 0 : char *spcname = strVal(lfirst(cell));
777 : Oid spcoid;
778 :
779 0 : spcoid = get_tablespace_oid(spcname, false);
780 0 : objects = lappend_oid(objects, spcoid);
781 : }
782 0 : break;
783 92 : case OBJECT_FDW:
784 184 : foreach(cell, objnames)
785 : {
786 92 : char *fdwname = strVal(lfirst(cell));
787 92 : Oid fdwid = get_foreign_data_wrapper_oid(fdwname, false);
788 :
789 92 : objects = lappend_oid(objects, fdwid);
790 : }
791 92 : break;
792 76 : case OBJECT_FOREIGN_SERVER:
793 152 : foreach(cell, objnames)
794 : {
795 76 : char *srvname = strVal(lfirst(cell));
796 76 : Oid srvid = get_foreign_server_oid(srvname, false);
797 :
798 76 : objects = lappend_oid(objects, srvid);
799 : }
800 76 : break;
801 74 : case OBJECT_PARAMETER_ACL:
802 196 : foreach(cell, objnames)
803 : {
804 : /*
805 : * In this code we represent a GUC by the OID of its entry in
806 : * pg_parameter_acl, which we have to manufacture here if it
807 : * doesn't exist yet. (That's a hack for sure, but it avoids
808 : * messing with all the GRANT/REVOKE infrastructure that
809 : * expects to use OIDs for object identities.) However, if
810 : * this is a REVOKE, we can instead just ignore any GUCs that
811 : * don't have such an entry, as they must not have any
812 : * privileges needing removal.
813 : */
814 124 : char *parameter = strVal(lfirst(cell));
815 124 : Oid parameterId = ParameterAclLookup(parameter, true);
816 :
817 124 : if (!OidIsValid(parameterId) && is_grant)
818 : {
819 68 : parameterId = ParameterAclCreate(parameter);
820 :
821 : /*
822 : * Prevent error when processing duplicate objects, and
823 : * make this new entry visible so that ExecGrant_Parameter
824 : * can update it.
825 : */
826 66 : CommandCounterIncrement();
827 : }
828 122 : if (OidIsValid(parameterId))
829 110 : objects = lappend_oid(objects, parameterId);
830 : }
831 72 : break;
832 0 : default:
833 0 : elog(ERROR, "unrecognized GrantStmt.objtype: %d",
834 : (int) objtype);
835 : }
836 :
837 15320 : return objects;
838 : }
839 :
840 : /*
841 : * objectsInSchemaToOids
842 : *
843 : * Find all objects of a given type in specified schemas, and make a list
844 : * of their Oids. We check USAGE privilege on the schemas, but there is
845 : * no privilege checking on the individual objects here.
846 : */
847 : static List *
848 30 : objectsInSchemaToOids(ObjectType objtype, List *nspnames)
849 : {
850 30 : List *objects = NIL;
851 : ListCell *cell;
852 :
853 60 : foreach(cell, nspnames)
854 : {
855 30 : char *nspname = strVal(lfirst(cell));
856 : Oid namespaceId;
857 : List *objs;
858 :
859 30 : namespaceId = LookupExplicitNamespace(nspname, false);
860 :
861 30 : switch (objtype)
862 : {
863 12 : case OBJECT_TABLE:
864 12 : objs = getRelationsInNamespace(namespaceId, RELKIND_RELATION);
865 12 : objects = list_concat(objects, objs);
866 12 : objs = getRelationsInNamespace(namespaceId, RELKIND_VIEW);
867 12 : objects = list_concat(objects, objs);
868 12 : objs = getRelationsInNamespace(namespaceId, RELKIND_MATVIEW);
869 12 : objects = list_concat(objects, objs);
870 12 : objs = getRelationsInNamespace(namespaceId, RELKIND_FOREIGN_TABLE);
871 12 : objects = list_concat(objects, objs);
872 12 : objs = getRelationsInNamespace(namespaceId, RELKIND_PARTITIONED_TABLE);
873 12 : objects = list_concat(objects, objs);
874 12 : break;
875 0 : case OBJECT_SEQUENCE:
876 0 : objs = getRelationsInNamespace(namespaceId, RELKIND_SEQUENCE);
877 0 : objects = list_concat(objects, objs);
878 0 : break;
879 18 : case OBJECT_FUNCTION:
880 : case OBJECT_PROCEDURE:
881 : case OBJECT_ROUTINE:
882 : {
883 : ScanKeyData key[2];
884 : int keycount;
885 : Relation rel;
886 : TableScanDesc scan;
887 : HeapTuple tuple;
888 :
889 18 : keycount = 0;
890 18 : ScanKeyInit(&key[keycount++],
891 : Anum_pg_proc_pronamespace,
892 : BTEqualStrategyNumber, F_OIDEQ,
893 : ObjectIdGetDatum(namespaceId));
894 :
895 18 : if (objtype == OBJECT_FUNCTION)
896 : /* includes aggregates and window functions */
897 6 : ScanKeyInit(&key[keycount++],
898 : Anum_pg_proc_prokind,
899 : BTEqualStrategyNumber, F_CHARNE,
900 : CharGetDatum(PROKIND_PROCEDURE));
901 12 : else if (objtype == OBJECT_PROCEDURE)
902 6 : ScanKeyInit(&key[keycount++],
903 : Anum_pg_proc_prokind,
904 : BTEqualStrategyNumber, F_CHAREQ,
905 : CharGetDatum(PROKIND_PROCEDURE));
906 :
907 18 : rel = table_open(ProcedureRelationId, AccessShareLock);
908 18 : scan = table_beginscan_catalog(rel, keycount, key);
909 :
910 54 : while ((tuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
911 : {
912 36 : Oid oid = ((Form_pg_proc) GETSTRUCT(tuple))->oid;
913 :
914 36 : objects = lappend_oid(objects, oid);
915 : }
916 :
917 18 : table_endscan(scan);
918 18 : table_close(rel, AccessShareLock);
919 : }
920 18 : break;
921 0 : default:
922 : /* should not happen */
923 0 : elog(ERROR, "unrecognized GrantStmt.objtype: %d",
924 : (int) objtype);
925 : }
926 : }
927 :
928 30 : return objects;
929 : }
930 :
931 : /*
932 : * getRelationsInNamespace
933 : *
934 : * Return Oid list of relations in given namespace filtered by relation kind
935 : */
936 : static List *
937 60 : getRelationsInNamespace(Oid namespaceId, char relkind)
938 : {
939 60 : List *relations = NIL;
940 : ScanKeyData key[2];
941 : Relation rel;
942 : TableScanDesc scan;
943 : HeapTuple tuple;
944 :
945 60 : ScanKeyInit(&key[0],
946 : Anum_pg_class_relnamespace,
947 : BTEqualStrategyNumber, F_OIDEQ,
948 : ObjectIdGetDatum(namespaceId));
949 60 : ScanKeyInit(&key[1],
950 : Anum_pg_class_relkind,
951 : BTEqualStrategyNumber, F_CHAREQ,
952 : CharGetDatum(relkind));
953 :
954 60 : rel = table_open(RelationRelationId, AccessShareLock);
955 60 : scan = table_beginscan_catalog(rel, 2, key);
956 :
957 84 : while ((tuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
958 : {
959 24 : Oid oid = ((Form_pg_class) GETSTRUCT(tuple))->oid;
960 :
961 24 : relations = lappend_oid(relations, oid);
962 : }
963 :
964 60 : table_endscan(scan);
965 60 : table_close(rel, AccessShareLock);
966 :
967 60 : return relations;
968 : }
969 :
970 :
971 : /*
972 : * ALTER DEFAULT PRIVILEGES statement
973 : */
974 : void
975 160 : ExecAlterDefaultPrivilegesStmt(ParseState *pstate, AlterDefaultPrivilegesStmt *stmt)
976 : {
977 160 : GrantStmt *action = stmt->action;
978 : InternalDefaultACL iacls;
979 : ListCell *cell;
980 160 : List *rolespecs = NIL;
981 160 : List *nspnames = NIL;
982 160 : DefElem *drolespecs = NULL;
983 160 : DefElem *dnspnames = NULL;
984 : AclMode all_privileges;
985 : const char *errormsg;
986 :
987 : /* Deconstruct the "options" part of the statement */
988 282 : foreach(cell, stmt->options)
989 : {
990 122 : DefElem *defel = (DefElem *) lfirst(cell);
991 :
992 122 : if (strcmp(defel->defname, "schemas") == 0)
993 : {
994 54 : if (dnspnames)
995 0 : errorConflictingDefElem(defel, pstate);
996 54 : dnspnames = defel;
997 : }
998 68 : else if (strcmp(defel->defname, "roles") == 0)
999 : {
1000 68 : if (drolespecs)
1001 0 : errorConflictingDefElem(defel, pstate);
1002 68 : drolespecs = defel;
1003 : }
1004 : else
1005 0 : elog(ERROR, "option \"%s\" not recognized", defel->defname);
1006 : }
1007 :
1008 160 : if (dnspnames)
1009 54 : nspnames = (List *) dnspnames->arg;
1010 160 : if (drolespecs)
1011 68 : rolespecs = (List *) drolespecs->arg;
1012 :
1013 : /* Prepare the InternalDefaultACL representation of the statement */
1014 : /* roleid to be filled below */
1015 : /* nspid to be filled in SetDefaultACLsInSchemas */
1016 160 : iacls.is_grant = action->is_grant;
1017 160 : iacls.objtype = action->objtype;
1018 : /* all_privs to be filled below */
1019 : /* privileges to be filled below */
1020 160 : iacls.grantees = NIL; /* filled below */
1021 160 : iacls.grant_option = action->grant_option;
1022 160 : iacls.behavior = action->behavior;
1023 :
1024 : /*
1025 : * Convert the RoleSpec list into an Oid list. Note that at this point we
1026 : * insert an ACL_ID_PUBLIC into the list if appropriate, so downstream
1027 : * there shouldn't be any additional work needed to support this case.
1028 : */
1029 326 : foreach(cell, action->grantees)
1030 : {
1031 166 : RoleSpec *grantee = (RoleSpec *) lfirst(cell);
1032 : Oid grantee_uid;
1033 :
1034 166 : switch (grantee->roletype)
1035 : {
1036 40 : case ROLESPEC_PUBLIC:
1037 40 : grantee_uid = ACL_ID_PUBLIC;
1038 40 : break;
1039 126 : default:
1040 126 : grantee_uid = get_rolespec_oid(grantee, false);
1041 126 : break;
1042 : }
1043 166 : iacls.grantees = lappend_oid(iacls.grantees, grantee_uid);
1044 : }
1045 :
1046 : /*
1047 : * Convert action->privileges, a list of privilege strings, into an
1048 : * AclMode bitmask.
1049 : */
1050 160 : switch (action->objtype)
1051 : {
1052 78 : case OBJECT_TABLE:
1053 78 : all_privileges = ACL_ALL_RIGHTS_RELATION;
1054 78 : errormsg = gettext_noop("invalid privilege type %s for relation");
1055 78 : break;
1056 6 : case OBJECT_SEQUENCE:
1057 6 : all_privileges = ACL_ALL_RIGHTS_SEQUENCE;
1058 6 : errormsg = gettext_noop("invalid privilege type %s for sequence");
1059 6 : break;
1060 22 : case OBJECT_FUNCTION:
1061 22 : all_privileges = ACL_ALL_RIGHTS_FUNCTION;
1062 22 : errormsg = gettext_noop("invalid privilege type %s for function");
1063 22 : break;
1064 0 : case OBJECT_PROCEDURE:
1065 0 : all_privileges = ACL_ALL_RIGHTS_FUNCTION;
1066 0 : errormsg = gettext_noop("invalid privilege type %s for procedure");
1067 0 : break;
1068 0 : case OBJECT_ROUTINE:
1069 0 : all_privileges = ACL_ALL_RIGHTS_FUNCTION;
1070 0 : errormsg = gettext_noop("invalid privilege type %s for routine");
1071 0 : break;
1072 18 : case OBJECT_TYPE:
1073 18 : all_privileges = ACL_ALL_RIGHTS_TYPE;
1074 18 : errormsg = gettext_noop("invalid privilege type %s for type");
1075 18 : break;
1076 36 : case OBJECT_SCHEMA:
1077 36 : all_privileges = ACL_ALL_RIGHTS_SCHEMA;
1078 36 : errormsg = gettext_noop("invalid privilege type %s for schema");
1079 36 : break;
1080 0 : default:
1081 0 : elog(ERROR, "unrecognized GrantStmt.objtype: %d",
1082 : (int) action->objtype);
1083 : /* keep compiler quiet */
1084 : all_privileges = ACL_NO_RIGHTS;
1085 : errormsg = NULL;
1086 : }
1087 :
1088 160 : if (action->privileges == NIL)
1089 : {
1090 56 : iacls.all_privs = true;
1091 :
1092 : /*
1093 : * will be turned into ACL_ALL_RIGHTS_* by the internal routines
1094 : * depending on the object type
1095 : */
1096 56 : iacls.privileges = ACL_NO_RIGHTS;
1097 : }
1098 : else
1099 : {
1100 104 : iacls.all_privs = false;
1101 104 : iacls.privileges = ACL_NO_RIGHTS;
1102 :
1103 208 : foreach(cell, action->privileges)
1104 : {
1105 104 : AccessPriv *privnode = (AccessPriv *) lfirst(cell);
1106 : AclMode priv;
1107 :
1108 104 : if (privnode->cols)
1109 0 : ereport(ERROR,
1110 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1111 : errmsg("default privileges cannot be set for columns")));
1112 :
1113 104 : if (privnode->priv_name == NULL) /* parser mistake? */
1114 0 : elog(ERROR, "AccessPriv node must specify privilege");
1115 104 : priv = string_to_privilege(privnode->priv_name);
1116 :
1117 104 : if (priv & ~((AclMode) all_privileges))
1118 0 : ereport(ERROR,
1119 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1120 : errmsg(errormsg, privilege_to_string(priv))));
1121 :
1122 104 : iacls.privileges |= priv;
1123 : }
1124 : }
1125 :
1126 160 : if (rolespecs == NIL)
1127 : {
1128 : /* Set permissions for myself */
1129 92 : iacls.roleid = GetUserId();
1130 :
1131 92 : SetDefaultACLsInSchemas(&iacls, nspnames);
1132 : }
1133 : else
1134 : {
1135 : /* Look up the role OIDs and do permissions checks */
1136 : ListCell *rolecell;
1137 :
1138 136 : foreach(rolecell, rolespecs)
1139 : {
1140 68 : RoleSpec *rolespec = lfirst(rolecell);
1141 :
1142 68 : iacls.roleid = get_rolespec_oid(rolespec, false);
1143 :
1144 68 : if (!has_privs_of_role(GetUserId(), iacls.roleid))
1145 0 : ereport(ERROR,
1146 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
1147 : errmsg("permission denied to change default privileges")));
1148 :
1149 68 : SetDefaultACLsInSchemas(&iacls, nspnames);
1150 : }
1151 : }
1152 154 : }
1153 :
1154 : /*
1155 : * Process ALTER DEFAULT PRIVILEGES for a list of target schemas
1156 : *
1157 : * All fields of *iacls except nspid were filled already
1158 : */
1159 : static void
1160 160 : SetDefaultACLsInSchemas(InternalDefaultACL *iacls, List *nspnames)
1161 : {
1162 160 : if (nspnames == NIL)
1163 : {
1164 : /* Set database-wide permissions if no schema was specified */
1165 106 : iacls->nspid = InvalidOid;
1166 :
1167 106 : SetDefaultACL(iacls);
1168 : }
1169 : else
1170 : {
1171 : /* Look up the schema OIDs and set permissions for each one */
1172 : ListCell *nspcell;
1173 :
1174 108 : foreach(nspcell, nspnames)
1175 : {
1176 60 : char *nspname = strVal(lfirst(nspcell));
1177 :
1178 60 : iacls->nspid = get_namespace_oid(nspname, false);
1179 :
1180 : /*
1181 : * We used to insist that the target role have CREATE privileges
1182 : * on the schema, since without that it wouldn't be able to create
1183 : * an object for which these default privileges would apply.
1184 : * However, this check proved to be more confusing than helpful,
1185 : * and it also caused certain database states to not be
1186 : * dumpable/restorable, since revoking CREATE doesn't cause
1187 : * default privileges for the schema to go away. So now, we just
1188 : * allow the ALTER; if the user lacks CREATE he'll find out when
1189 : * he tries to create an object.
1190 : */
1191 :
1192 60 : SetDefaultACL(iacls);
1193 : }
1194 : }
1195 154 : }
1196 :
1197 :
1198 : /*
1199 : * Create or update a pg_default_acl entry
1200 : */
1201 : static void
1202 196 : SetDefaultACL(InternalDefaultACL *iacls)
1203 : {
1204 196 : AclMode this_privileges = iacls->privileges;
1205 : char objtype;
1206 : Relation rel;
1207 : HeapTuple tuple;
1208 : bool isNew;
1209 : Acl *def_acl;
1210 : Acl *old_acl;
1211 : Acl *new_acl;
1212 : HeapTuple newtuple;
1213 : int noldmembers;
1214 : int nnewmembers;
1215 : Oid *oldmembers;
1216 : Oid *newmembers;
1217 :
1218 196 : rel = table_open(DefaultAclRelationId, RowExclusiveLock);
1219 :
1220 : /*
1221 : * The default for a global entry is the hard-wired default ACL for the
1222 : * particular object type. The default for non-global entries is an empty
1223 : * ACL. This must be so because global entries replace the hard-wired
1224 : * defaults, while others are added on.
1225 : */
1226 196 : if (!OidIsValid(iacls->nspid))
1227 136 : def_acl = acldefault(iacls->objtype, iacls->roleid);
1228 : else
1229 60 : def_acl = make_empty_acl();
1230 :
1231 : /*
1232 : * Convert ACL object type to pg_default_acl object type and handle
1233 : * all_privs option
1234 : */
1235 196 : switch (iacls->objtype)
1236 : {
1237 90 : case OBJECT_TABLE:
1238 90 : objtype = DEFACLOBJ_RELATION;
1239 90 : if (iacls->all_privs && this_privileges == ACL_NO_RIGHTS)
1240 26 : this_privileges = ACL_ALL_RIGHTS_RELATION;
1241 90 : break;
1242 :
1243 12 : case OBJECT_SEQUENCE:
1244 12 : objtype = DEFACLOBJ_SEQUENCE;
1245 12 : if (iacls->all_privs && this_privileges == ACL_NO_RIGHTS)
1246 12 : this_privileges = ACL_ALL_RIGHTS_SEQUENCE;
1247 12 : break;
1248 :
1249 28 : case OBJECT_FUNCTION:
1250 28 : objtype = DEFACLOBJ_FUNCTION;
1251 28 : if (iacls->all_privs && this_privileges == ACL_NO_RIGHTS)
1252 12 : this_privileges = ACL_ALL_RIGHTS_FUNCTION;
1253 28 : break;
1254 :
1255 24 : case OBJECT_TYPE:
1256 24 : objtype = DEFACLOBJ_TYPE;
1257 24 : if (iacls->all_privs && this_privileges == ACL_NO_RIGHTS)
1258 12 : this_privileges = ACL_ALL_RIGHTS_TYPE;
1259 24 : break;
1260 :
1261 42 : case OBJECT_SCHEMA:
1262 42 : if (OidIsValid(iacls->nspid))
1263 6 : ereport(ERROR,
1264 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1265 : errmsg("cannot use IN SCHEMA clause when using GRANT/REVOKE ON SCHEMAS")));
1266 36 : objtype = DEFACLOBJ_NAMESPACE;
1267 36 : if (iacls->all_privs && this_privileges == ACL_NO_RIGHTS)
1268 24 : this_privileges = ACL_ALL_RIGHTS_SCHEMA;
1269 36 : break;
1270 :
1271 0 : default:
1272 0 : elog(ERROR, "unrecognized object type: %d",
1273 : (int) iacls->objtype);
1274 : objtype = 0; /* keep compiler quiet */
1275 : break;
1276 : }
1277 :
1278 : /* Search for existing row for this object type in catalog */
1279 190 : tuple = SearchSysCache3(DEFACLROLENSPOBJ,
1280 : ObjectIdGetDatum(iacls->roleid),
1281 : ObjectIdGetDatum(iacls->nspid),
1282 : CharGetDatum(objtype));
1283 :
1284 190 : if (HeapTupleIsValid(tuple))
1285 : {
1286 : Datum aclDatum;
1287 : bool isNull;
1288 :
1289 72 : aclDatum = SysCacheGetAttr(DEFACLROLENSPOBJ, tuple,
1290 : Anum_pg_default_acl_defaclacl,
1291 : &isNull);
1292 72 : if (!isNull)
1293 72 : old_acl = DatumGetAclPCopy(aclDatum);
1294 : else
1295 0 : old_acl = NULL; /* this case shouldn't happen, probably */
1296 72 : isNew = false;
1297 : }
1298 : else
1299 : {
1300 118 : old_acl = NULL;
1301 118 : isNew = true;
1302 : }
1303 :
1304 190 : if (old_acl != NULL)
1305 : {
1306 : /*
1307 : * We need the members of both old and new ACLs so we can correct the
1308 : * shared dependency information. Collect data before
1309 : * merge_acl_with_grant throws away old_acl.
1310 : */
1311 72 : noldmembers = aclmembers(old_acl, &oldmembers);
1312 : }
1313 : else
1314 : {
1315 : /* If no or null entry, start with the default ACL value */
1316 118 : old_acl = aclcopy(def_acl);
1317 : /* There are no old member roles according to the catalogs */
1318 118 : noldmembers = 0;
1319 118 : oldmembers = NULL;
1320 : }
1321 :
1322 : /*
1323 : * Generate new ACL. Grantor of rights is always the same as the target
1324 : * role.
1325 : */
1326 190 : new_acl = merge_acl_with_grant(old_acl,
1327 190 : iacls->is_grant,
1328 190 : iacls->grant_option,
1329 : iacls->behavior,
1330 : iacls->grantees,
1331 : this_privileges,
1332 : iacls->roleid,
1333 : iacls->roleid);
1334 :
1335 : /*
1336 : * If the result is the same as the default value, we do not need an
1337 : * explicit pg_default_acl entry, and should in fact remove the entry if
1338 : * it exists. Must sort both arrays to compare properly.
1339 : */
1340 190 : aclitemsort(new_acl);
1341 190 : aclitemsort(def_acl);
1342 190 : if (aclequal(new_acl, def_acl))
1343 : {
1344 : /* delete old entry, if indeed there is one */
1345 56 : if (!isNew)
1346 : {
1347 : ObjectAddress myself;
1348 :
1349 : /*
1350 : * The dependency machinery will take care of removing all
1351 : * associated dependency entries. We use DROP_RESTRICT since
1352 : * there shouldn't be anything depending on this entry.
1353 : */
1354 54 : myself.classId = DefaultAclRelationId;
1355 54 : myself.objectId = ((Form_pg_default_acl) GETSTRUCT(tuple))->oid;
1356 54 : myself.objectSubId = 0;
1357 :
1358 54 : performDeletion(&myself, DROP_RESTRICT, 0);
1359 : }
1360 : }
1361 : else
1362 : {
1363 134 : Datum values[Natts_pg_default_acl] = {0};
1364 134 : bool nulls[Natts_pg_default_acl] = {0};
1365 134 : bool replaces[Natts_pg_default_acl] = {0};
1366 : Oid defAclOid;
1367 :
1368 134 : if (isNew)
1369 : {
1370 : /* insert new entry */
1371 116 : defAclOid = GetNewOidWithIndex(rel, DefaultAclOidIndexId,
1372 : Anum_pg_default_acl_oid);
1373 116 : values[Anum_pg_default_acl_oid - 1] = ObjectIdGetDatum(defAclOid);
1374 116 : values[Anum_pg_default_acl_defaclrole - 1] = ObjectIdGetDatum(iacls->roleid);
1375 116 : values[Anum_pg_default_acl_defaclnamespace - 1] = ObjectIdGetDatum(iacls->nspid);
1376 116 : values[Anum_pg_default_acl_defaclobjtype - 1] = CharGetDatum(objtype);
1377 116 : values[Anum_pg_default_acl_defaclacl - 1] = PointerGetDatum(new_acl);
1378 :
1379 116 : newtuple = heap_form_tuple(RelationGetDescr(rel), values, nulls);
1380 116 : CatalogTupleInsert(rel, newtuple);
1381 : }
1382 : else
1383 : {
1384 18 : defAclOid = ((Form_pg_default_acl) GETSTRUCT(tuple))->oid;
1385 :
1386 : /* update existing entry */
1387 18 : values[Anum_pg_default_acl_defaclacl - 1] = PointerGetDatum(new_acl);
1388 18 : replaces[Anum_pg_default_acl_defaclacl - 1] = true;
1389 :
1390 18 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(rel),
1391 : values, nulls, replaces);
1392 18 : CatalogTupleUpdate(rel, &newtuple->t_self, newtuple);
1393 : }
1394 :
1395 : /* these dependencies don't change in an update */
1396 134 : if (isNew)
1397 : {
1398 : /* dependency on role */
1399 116 : recordDependencyOnOwner(DefaultAclRelationId, defAclOid,
1400 : iacls->roleid);
1401 :
1402 : /* dependency on namespace */
1403 116 : if (OidIsValid(iacls->nspid))
1404 : {
1405 : ObjectAddress myself,
1406 : referenced;
1407 :
1408 34 : myself.classId = DefaultAclRelationId;
1409 34 : myself.objectId = defAclOid;
1410 34 : myself.objectSubId = 0;
1411 :
1412 34 : referenced.classId = NamespaceRelationId;
1413 34 : referenced.objectId = iacls->nspid;
1414 34 : referenced.objectSubId = 0;
1415 :
1416 34 : recordDependencyOn(&myself, &referenced, DEPENDENCY_AUTO);
1417 : }
1418 : }
1419 :
1420 : /*
1421 : * Update the shared dependency ACL info
1422 : */
1423 134 : nnewmembers = aclmembers(new_acl, &newmembers);
1424 :
1425 134 : updateAclDependencies(DefaultAclRelationId,
1426 : defAclOid, 0,
1427 : iacls->roleid,
1428 : noldmembers, oldmembers,
1429 : nnewmembers, newmembers);
1430 :
1431 134 : if (isNew)
1432 116 : InvokeObjectPostCreateHook(DefaultAclRelationId, defAclOid, 0);
1433 : else
1434 18 : InvokeObjectPostAlterHook(DefaultAclRelationId, defAclOid, 0);
1435 : }
1436 :
1437 190 : if (HeapTupleIsValid(tuple))
1438 72 : ReleaseSysCache(tuple);
1439 :
1440 190 : table_close(rel, RowExclusiveLock);
1441 :
1442 : /* prevent error when processing duplicate objects */
1443 190 : CommandCounterIncrement();
1444 190 : }
1445 :
1446 :
1447 : /*
1448 : * RemoveRoleFromObjectACL
1449 : *
1450 : * Used by shdepDropOwned to remove mentions of a role in ACLs
1451 : */
1452 : void
1453 242 : RemoveRoleFromObjectACL(Oid roleid, Oid classid, Oid objid)
1454 : {
1455 242 : if (classid == DefaultAclRelationId)
1456 : {
1457 : InternalDefaultACL iacls;
1458 : Form_pg_default_acl pg_default_acl_tuple;
1459 : Relation rel;
1460 : ScanKeyData skey[1];
1461 : SysScanDesc scan;
1462 : HeapTuple tuple;
1463 :
1464 : /* first fetch info needed by SetDefaultACL */
1465 30 : rel = table_open(DefaultAclRelationId, AccessShareLock);
1466 :
1467 30 : ScanKeyInit(&skey[0],
1468 : Anum_pg_default_acl_oid,
1469 : BTEqualStrategyNumber, F_OIDEQ,
1470 : ObjectIdGetDatum(objid));
1471 :
1472 30 : scan = systable_beginscan(rel, DefaultAclOidIndexId, true,
1473 : NULL, 1, skey);
1474 :
1475 30 : tuple = systable_getnext(scan);
1476 :
1477 30 : if (!HeapTupleIsValid(tuple))
1478 0 : elog(ERROR, "could not find tuple for default ACL %u", objid);
1479 :
1480 30 : pg_default_acl_tuple = (Form_pg_default_acl) GETSTRUCT(tuple);
1481 :
1482 30 : iacls.roleid = pg_default_acl_tuple->defaclrole;
1483 30 : iacls.nspid = pg_default_acl_tuple->defaclnamespace;
1484 :
1485 30 : switch (pg_default_acl_tuple->defaclobjtype)
1486 : {
1487 6 : case DEFACLOBJ_RELATION:
1488 6 : iacls.objtype = OBJECT_TABLE;
1489 6 : break;
1490 6 : case DEFACLOBJ_SEQUENCE:
1491 6 : iacls.objtype = OBJECT_SEQUENCE;
1492 6 : break;
1493 6 : case DEFACLOBJ_FUNCTION:
1494 6 : iacls.objtype = OBJECT_FUNCTION;
1495 6 : break;
1496 6 : case DEFACLOBJ_TYPE:
1497 6 : iacls.objtype = OBJECT_TYPE;
1498 6 : break;
1499 6 : case DEFACLOBJ_NAMESPACE:
1500 6 : iacls.objtype = OBJECT_SCHEMA;
1501 6 : break;
1502 0 : default:
1503 : /* Shouldn't get here */
1504 0 : elog(ERROR, "unexpected default ACL type: %d",
1505 : (int) pg_default_acl_tuple->defaclobjtype);
1506 : break;
1507 : }
1508 :
1509 30 : systable_endscan(scan);
1510 30 : table_close(rel, AccessShareLock);
1511 :
1512 30 : iacls.is_grant = false;
1513 30 : iacls.all_privs = true;
1514 30 : iacls.privileges = ACL_NO_RIGHTS;
1515 30 : iacls.grantees = list_make1_oid(roleid);
1516 30 : iacls.grant_option = false;
1517 30 : iacls.behavior = DROP_CASCADE;
1518 :
1519 : /* Do it */
1520 30 : SetDefaultACL(&iacls);
1521 : }
1522 : else
1523 : {
1524 : InternalGrant istmt;
1525 :
1526 212 : switch (classid)
1527 : {
1528 92 : case RelationRelationId:
1529 : /* it's OK to use TABLE for a sequence */
1530 92 : istmt.objtype = OBJECT_TABLE;
1531 92 : break;
1532 10 : case DatabaseRelationId:
1533 10 : istmt.objtype = OBJECT_DATABASE;
1534 10 : break;
1535 4 : case TypeRelationId:
1536 4 : istmt.objtype = OBJECT_TYPE;
1537 4 : break;
1538 34 : case ProcedureRelationId:
1539 34 : istmt.objtype = OBJECT_ROUTINE;
1540 34 : break;
1541 0 : case LanguageRelationId:
1542 0 : istmt.objtype = OBJECT_LANGUAGE;
1543 0 : break;
1544 18 : case LargeObjectRelationId:
1545 18 : istmt.objtype = OBJECT_LARGEOBJECT;
1546 18 : break;
1547 14 : case NamespaceRelationId:
1548 14 : istmt.objtype = OBJECT_SCHEMA;
1549 14 : break;
1550 0 : case TableSpaceRelationId:
1551 0 : istmt.objtype = OBJECT_TABLESPACE;
1552 0 : break;
1553 14 : case ForeignServerRelationId:
1554 14 : istmt.objtype = OBJECT_FOREIGN_SERVER;
1555 14 : break;
1556 2 : case ForeignDataWrapperRelationId:
1557 2 : istmt.objtype = OBJECT_FDW;
1558 2 : break;
1559 24 : case ParameterAclRelationId:
1560 24 : istmt.objtype = OBJECT_PARAMETER_ACL;
1561 24 : break;
1562 0 : default:
1563 0 : elog(ERROR, "unexpected object class %u", classid);
1564 : break;
1565 : }
1566 212 : istmt.is_grant = false;
1567 212 : istmt.objects = list_make1_oid(objid);
1568 212 : istmt.all_privs = true;
1569 212 : istmt.privileges = ACL_NO_RIGHTS;
1570 212 : istmt.col_privs = NIL;
1571 212 : istmt.grantees = list_make1_oid(roleid);
1572 212 : istmt.grant_option = false;
1573 212 : istmt.behavior = DROP_CASCADE;
1574 :
1575 212 : ExecGrantStmt_oids(&istmt);
1576 : }
1577 242 : }
1578 :
1579 :
1580 : /*
1581 : * expand_col_privileges
1582 : *
1583 : * OR the specified privilege(s) into per-column array entries for each
1584 : * specified attribute. The per-column array is indexed starting at
1585 : * FirstLowInvalidHeapAttributeNumber, up to relation's last attribute.
1586 : */
1587 : static void
1588 410 : expand_col_privileges(List *colnames, Oid table_oid,
1589 : AclMode this_privileges,
1590 : AclMode *col_privileges,
1591 : int num_col_privileges)
1592 : {
1593 : ListCell *cell;
1594 :
1595 2310 : foreach(cell, colnames)
1596 : {
1597 1900 : char *colname = strVal(lfirst(cell));
1598 : AttrNumber attnum;
1599 :
1600 1900 : attnum = get_attnum(table_oid, colname);
1601 1900 : if (attnum == InvalidAttrNumber)
1602 0 : ereport(ERROR,
1603 : (errcode(ERRCODE_UNDEFINED_COLUMN),
1604 : errmsg("column \"%s\" of relation \"%s\" does not exist",
1605 : colname, get_rel_name(table_oid))));
1606 1900 : attnum -= FirstLowInvalidHeapAttributeNumber;
1607 1900 : if (attnum <= 0 || attnum >= num_col_privileges)
1608 0 : elog(ERROR, "column number out of range"); /* safety check */
1609 1900 : col_privileges[attnum] |= this_privileges;
1610 : }
1611 410 : }
1612 :
1613 : /*
1614 : * expand_all_col_privileges
1615 : *
1616 : * OR the specified privilege(s) into per-column array entries for each valid
1617 : * attribute of a relation. The per-column array is indexed starting at
1618 : * FirstLowInvalidHeapAttributeNumber, up to relation's last attribute.
1619 : */
1620 : static void
1621 1516 : expand_all_col_privileges(Oid table_oid, Form_pg_class classForm,
1622 : AclMode this_privileges,
1623 : AclMode *col_privileges,
1624 : int num_col_privileges)
1625 : {
1626 : AttrNumber curr_att;
1627 :
1628 : Assert(classForm->relnatts - FirstLowInvalidHeapAttributeNumber < num_col_privileges);
1629 1516 : for (curr_att = FirstLowInvalidHeapAttributeNumber + 1;
1630 22790 : curr_att <= classForm->relnatts;
1631 21274 : curr_att++)
1632 : {
1633 : HeapTuple attTuple;
1634 : bool isdropped;
1635 :
1636 21274 : if (curr_att == InvalidAttrNumber)
1637 1516 : continue;
1638 :
1639 : /* Views don't have any system columns at all */
1640 19758 : if (classForm->relkind == RELKIND_VIEW && curr_att < 0)
1641 3816 : continue;
1642 :
1643 15942 : attTuple = SearchSysCache2(ATTNUM,
1644 : ObjectIdGetDatum(table_oid),
1645 : Int16GetDatum(curr_att));
1646 15942 : if (!HeapTupleIsValid(attTuple))
1647 0 : elog(ERROR, "cache lookup failed for attribute %d of relation %u",
1648 : curr_att, table_oid);
1649 :
1650 15942 : isdropped = ((Form_pg_attribute) GETSTRUCT(attTuple))->attisdropped;
1651 :
1652 15942 : ReleaseSysCache(attTuple);
1653 :
1654 : /* ignore dropped columns */
1655 15942 : if (isdropped)
1656 6 : continue;
1657 :
1658 15936 : col_privileges[curr_att - FirstLowInvalidHeapAttributeNumber] |= this_privileges;
1659 : }
1660 1516 : }
1661 :
1662 : /*
1663 : * This processes attributes, but expects to be called from
1664 : * ExecGrant_Relation, not directly from ExecuteGrantStmt.
1665 : */
1666 : static void
1667 17794 : ExecGrant_Attribute(InternalGrant *istmt, Oid relOid, const char *relname,
1668 : AttrNumber attnum, Oid ownerId, AclMode col_privileges,
1669 : Relation attRelation, const Acl *old_rel_acl)
1670 : {
1671 : HeapTuple attr_tuple;
1672 : Form_pg_attribute pg_attribute_tuple;
1673 : Acl *old_acl;
1674 : Acl *new_acl;
1675 : Acl *merged_acl;
1676 : Datum aclDatum;
1677 : bool isNull;
1678 : Oid grantorId;
1679 : AclMode avail_goptions;
1680 : bool need_update;
1681 : HeapTuple newtuple;
1682 17794 : Datum values[Natts_pg_attribute] = {0};
1683 17794 : bool nulls[Natts_pg_attribute] = {0};
1684 17794 : bool replaces[Natts_pg_attribute] = {0};
1685 : int noldmembers;
1686 : int nnewmembers;
1687 : Oid *oldmembers;
1688 : Oid *newmembers;
1689 :
1690 17794 : attr_tuple = SearchSysCache2(ATTNUM,
1691 : ObjectIdGetDatum(relOid),
1692 : Int16GetDatum(attnum));
1693 17794 : if (!HeapTupleIsValid(attr_tuple))
1694 0 : elog(ERROR, "cache lookup failed for attribute %d of relation %u",
1695 : attnum, relOid);
1696 17794 : pg_attribute_tuple = (Form_pg_attribute) GETSTRUCT(attr_tuple);
1697 :
1698 : /*
1699 : * Get working copy of existing ACL. If there's no ACL, substitute the
1700 : * proper default.
1701 : */
1702 17794 : aclDatum = SysCacheGetAttr(ATTNUM, attr_tuple, Anum_pg_attribute_attacl,
1703 : &isNull);
1704 17794 : if (isNull)
1705 : {
1706 17488 : old_acl = acldefault(OBJECT_COLUMN, ownerId);
1707 : /* There are no old member roles according to the catalogs */
1708 17488 : noldmembers = 0;
1709 17488 : oldmembers = NULL;
1710 : }
1711 : else
1712 : {
1713 306 : old_acl = DatumGetAclPCopy(aclDatum);
1714 : /* Get the roles mentioned in the existing ACL */
1715 306 : noldmembers = aclmembers(old_acl, &oldmembers);
1716 : }
1717 :
1718 : /*
1719 : * In select_best_grantor we should consider existing table-level ACL bits
1720 : * as well as the per-column ACL. Build a new ACL that is their
1721 : * concatenation. (This is a bit cheap and dirty compared to merging them
1722 : * properly with no duplications, but it's all we need here.)
1723 : */
1724 17794 : merged_acl = aclconcat(old_rel_acl, old_acl);
1725 :
1726 : /* Determine ID to do the grant as, and available grant options */
1727 17794 : select_best_grantor(GetUserId(), col_privileges,
1728 : merged_acl, ownerId,
1729 : &grantorId, &avail_goptions);
1730 :
1731 17794 : pfree(merged_acl);
1732 :
1733 : /*
1734 : * Restrict the privileges to what we can actually grant, and emit the
1735 : * standards-mandated warning and error messages. Note: we don't track
1736 : * whether the user actually used the ALL PRIVILEGES(columns) syntax for
1737 : * each column; we just approximate it by whether all the possible
1738 : * privileges are specified now. Since the all_privs flag only determines
1739 : * whether a warning is issued, this seems close enough.
1740 : */
1741 : col_privileges =
1742 17794 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
1743 : (col_privileges == ACL_ALL_RIGHTS_COLUMN),
1744 : col_privileges,
1745 : relOid, grantorId, OBJECT_COLUMN,
1746 : relname, attnum,
1747 17794 : NameStr(pg_attribute_tuple->attname));
1748 :
1749 : /*
1750 : * Generate new ACL.
1751 : */
1752 17794 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
1753 17794 : istmt->grant_option,
1754 : istmt->behavior, istmt->grantees,
1755 : col_privileges, grantorId,
1756 : ownerId);
1757 :
1758 : /*
1759 : * We need the members of both old and new ACLs so we can correct the
1760 : * shared dependency information.
1761 : */
1762 17794 : nnewmembers = aclmembers(new_acl, &newmembers);
1763 :
1764 : /* finished building new ACL value, now insert it */
1765 :
1766 : /*
1767 : * If the updated ACL is empty, we can set attacl to null, and maybe even
1768 : * avoid an update of the pg_attribute row. This is worth testing because
1769 : * we'll come through here multiple times for any relation-level REVOKE,
1770 : * even if there were never any column GRANTs. Note we are assuming that
1771 : * the "default" ACL state for columns is empty.
1772 : */
1773 17794 : if (ACL_NUM(new_acl) > 0)
1774 : {
1775 1924 : values[Anum_pg_attribute_attacl - 1] = PointerGetDatum(new_acl);
1776 1924 : need_update = true;
1777 : }
1778 : else
1779 : {
1780 15870 : nulls[Anum_pg_attribute_attacl - 1] = true;
1781 15870 : need_update = !isNull;
1782 : }
1783 17794 : replaces[Anum_pg_attribute_attacl - 1] = true;
1784 :
1785 17794 : if (need_update)
1786 : {
1787 2018 : newtuple = heap_modify_tuple(attr_tuple, RelationGetDescr(attRelation),
1788 : values, nulls, replaces);
1789 :
1790 2018 : CatalogTupleUpdate(attRelation, &newtuple->t_self, newtuple);
1791 :
1792 : /* Update initial privileges for extensions */
1793 2018 : recordExtensionInitPriv(relOid, RelationRelationId, attnum,
1794 2018 : ACL_NUM(new_acl) > 0 ? new_acl : NULL);
1795 :
1796 : /* Update the shared dependency ACL info */
1797 2018 : updateAclDependencies(RelationRelationId, relOid, attnum,
1798 : ownerId,
1799 : noldmembers, oldmembers,
1800 : nnewmembers, newmembers);
1801 : }
1802 :
1803 17794 : pfree(new_acl);
1804 :
1805 17794 : ReleaseSysCache(attr_tuple);
1806 17794 : }
1807 :
1808 : /*
1809 : * This processes both sequences and non-sequences.
1810 : */
1811 : static void
1812 7898 : ExecGrant_Relation(InternalGrant *istmt)
1813 : {
1814 : Relation relation;
1815 : Relation attRelation;
1816 : ListCell *cell;
1817 :
1818 7898 : relation = table_open(RelationRelationId, RowExclusiveLock);
1819 7898 : attRelation = table_open(AttributeRelationId, RowExclusiveLock);
1820 :
1821 15856 : foreach(cell, istmt->objects)
1822 : {
1823 7964 : Oid relOid = lfirst_oid(cell);
1824 : Datum aclDatum;
1825 : Form_pg_class pg_class_tuple;
1826 : bool isNull;
1827 : AclMode this_privileges;
1828 : AclMode *col_privileges;
1829 : int num_col_privileges;
1830 : bool have_col_privileges;
1831 : Acl *old_acl;
1832 : Acl *old_rel_acl;
1833 : int noldmembers;
1834 : Oid *oldmembers;
1835 : Oid ownerId;
1836 : HeapTuple tuple;
1837 : ListCell *cell_colprivs;
1838 :
1839 7964 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(relOid));
1840 7964 : if (!HeapTupleIsValid(tuple))
1841 0 : elog(ERROR, "cache lookup failed for relation %u", relOid);
1842 7964 : pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
1843 :
1844 : /* Not sensible to grant on an index */
1845 7964 : if (pg_class_tuple->relkind == RELKIND_INDEX ||
1846 7964 : pg_class_tuple->relkind == RELKIND_PARTITIONED_INDEX)
1847 0 : ereport(ERROR,
1848 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1849 : errmsg("\"%s\" is an index",
1850 : NameStr(pg_class_tuple->relname))));
1851 :
1852 : /* Composite types aren't tables either */
1853 7964 : if (pg_class_tuple->relkind == RELKIND_COMPOSITE_TYPE)
1854 0 : ereport(ERROR,
1855 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1856 : errmsg("\"%s\" is a composite type",
1857 : NameStr(pg_class_tuple->relname))));
1858 :
1859 : /* Used GRANT SEQUENCE on a non-sequence? */
1860 7964 : if (istmt->objtype == OBJECT_SEQUENCE &&
1861 16 : pg_class_tuple->relkind != RELKIND_SEQUENCE)
1862 0 : ereport(ERROR,
1863 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1864 : errmsg("\"%s\" is not a sequence",
1865 : NameStr(pg_class_tuple->relname))));
1866 :
1867 : /* Adjust the default permissions based on object type */
1868 7964 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
1869 : {
1870 1570 : if (pg_class_tuple->relkind == RELKIND_SEQUENCE)
1871 74 : this_privileges = ACL_ALL_RIGHTS_SEQUENCE;
1872 : else
1873 1496 : this_privileges = ACL_ALL_RIGHTS_RELATION;
1874 : }
1875 : else
1876 6394 : this_privileges = istmt->privileges;
1877 :
1878 : /*
1879 : * The GRANT TABLE syntax can be used for sequences and non-sequences,
1880 : * so we have to look at the relkind to determine the supported
1881 : * permissions. The OR of table and sequence permissions were already
1882 : * checked.
1883 : */
1884 7964 : if (istmt->objtype == OBJECT_TABLE)
1885 : {
1886 7948 : if (pg_class_tuple->relkind == RELKIND_SEQUENCE)
1887 : {
1888 : /*
1889 : * For backward compatibility, just throw a warning for
1890 : * invalid sequence permissions when using the non-sequence
1891 : * GRANT syntax.
1892 : */
1893 144 : if (this_privileges & ~((AclMode) ACL_ALL_RIGHTS_SEQUENCE))
1894 : {
1895 : /*
1896 : * Mention the object name because the user needs to know
1897 : * which operations succeeded. This is required because
1898 : * WARNING allows the command to continue.
1899 : */
1900 0 : ereport(WARNING,
1901 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1902 : errmsg("sequence \"%s\" only supports USAGE, SELECT, and UPDATE privileges",
1903 : NameStr(pg_class_tuple->relname))));
1904 0 : this_privileges &= (AclMode) ACL_ALL_RIGHTS_SEQUENCE;
1905 : }
1906 : }
1907 : else
1908 : {
1909 7804 : if (this_privileges & ~((AclMode) ACL_ALL_RIGHTS_RELATION))
1910 : {
1911 : /*
1912 : * USAGE is the only permission supported by sequences but
1913 : * not by non-sequences. Don't mention the object name
1914 : * because we didn't in the combined TABLE | SEQUENCE
1915 : * check.
1916 : */
1917 0 : ereport(ERROR,
1918 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1919 : errmsg("invalid privilege type %s for table",
1920 : "USAGE")));
1921 : }
1922 : }
1923 : }
1924 :
1925 : /*
1926 : * Set up array in which we'll accumulate any column privilege bits
1927 : * that need modification. The array is indexed such that entry [0]
1928 : * corresponds to FirstLowInvalidHeapAttributeNumber.
1929 : */
1930 7964 : num_col_privileges = pg_class_tuple->relnatts - FirstLowInvalidHeapAttributeNumber + 1;
1931 7964 : col_privileges = (AclMode *) palloc0(num_col_privileges * sizeof(AclMode));
1932 7964 : have_col_privileges = false;
1933 :
1934 : /*
1935 : * If we are revoking relation privileges that are also column
1936 : * privileges, we must implicitly revoke them from each column too,
1937 : * per SQL spec. (We don't need to implicitly add column privileges
1938 : * during GRANT because the permissions-checking code always checks
1939 : * both relation and per-column privileges.)
1940 : */
1941 7964 : if (!istmt->is_grant &&
1942 1572 : (this_privileges & ACL_ALL_RIGHTS_COLUMN) != 0)
1943 : {
1944 1516 : expand_all_col_privileges(relOid, pg_class_tuple,
1945 : this_privileges & ACL_ALL_RIGHTS_COLUMN,
1946 : col_privileges,
1947 : num_col_privileges);
1948 1516 : have_col_privileges = true;
1949 : }
1950 :
1951 : /*
1952 : * Get owner ID and working copy of existing ACL. If there's no ACL,
1953 : * substitute the proper default.
1954 : */
1955 7964 : ownerId = pg_class_tuple->relowner;
1956 7964 : aclDatum = SysCacheGetAttr(RELOID, tuple, Anum_pg_class_relacl,
1957 : &isNull);
1958 7964 : if (isNull)
1959 : {
1960 6874 : switch (pg_class_tuple->relkind)
1961 : {
1962 84 : case RELKIND_SEQUENCE:
1963 84 : old_acl = acldefault(OBJECT_SEQUENCE, ownerId);
1964 84 : break;
1965 6790 : default:
1966 6790 : old_acl = acldefault(OBJECT_TABLE, ownerId);
1967 6790 : break;
1968 : }
1969 : /* There are no old member roles according to the catalogs */
1970 6874 : noldmembers = 0;
1971 6874 : oldmembers = NULL;
1972 : }
1973 : else
1974 : {
1975 1090 : old_acl = DatumGetAclPCopy(aclDatum);
1976 : /* Get the roles mentioned in the existing ACL */
1977 1090 : noldmembers = aclmembers(old_acl, &oldmembers);
1978 : }
1979 :
1980 : /* Need an extra copy of original rel ACL for column handling */
1981 7964 : old_rel_acl = aclcopy(old_acl);
1982 :
1983 : /*
1984 : * Handle relation-level privileges, if any were specified
1985 : */
1986 7964 : if (this_privileges != ACL_NO_RIGHTS)
1987 : {
1988 : AclMode avail_goptions;
1989 : Acl *new_acl;
1990 : Oid grantorId;
1991 : HeapTuple newtuple;
1992 7566 : Datum values[Natts_pg_class] = {0};
1993 7566 : bool nulls[Natts_pg_class] = {0};
1994 7566 : bool replaces[Natts_pg_class] = {0};
1995 : int nnewmembers;
1996 : Oid *newmembers;
1997 : ObjectType objtype;
1998 :
1999 : /* Determine ID to do the grant as, and available grant options */
2000 7566 : select_best_grantor(GetUserId(), this_privileges,
2001 : old_acl, ownerId,
2002 : &grantorId, &avail_goptions);
2003 :
2004 7566 : switch (pg_class_tuple->relkind)
2005 : {
2006 160 : case RELKIND_SEQUENCE:
2007 160 : objtype = OBJECT_SEQUENCE;
2008 160 : break;
2009 7406 : default:
2010 7406 : objtype = OBJECT_TABLE;
2011 7406 : break;
2012 : }
2013 :
2014 : /*
2015 : * Restrict the privileges to what we can actually grant, and emit
2016 : * the standards-mandated warning and error messages.
2017 : */
2018 : this_privileges =
2019 7566 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2020 7566 : istmt->all_privs, this_privileges,
2021 : relOid, grantorId, objtype,
2022 7566 : NameStr(pg_class_tuple->relname),
2023 : 0, NULL);
2024 :
2025 : /*
2026 : * Generate new ACL.
2027 : */
2028 7566 : new_acl = merge_acl_with_grant(old_acl,
2029 7566 : istmt->is_grant,
2030 7566 : istmt->grant_option,
2031 : istmt->behavior,
2032 : istmt->grantees,
2033 : this_privileges,
2034 : grantorId,
2035 : ownerId);
2036 :
2037 : /*
2038 : * We need the members of both old and new ACLs so we can correct
2039 : * the shared dependency information.
2040 : */
2041 7560 : nnewmembers = aclmembers(new_acl, &newmembers);
2042 :
2043 : /* finished building new ACL value, now insert it */
2044 7560 : replaces[Anum_pg_class_relacl - 1] = true;
2045 7560 : values[Anum_pg_class_relacl - 1] = PointerGetDatum(new_acl);
2046 :
2047 7560 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation),
2048 : values, nulls, replaces);
2049 :
2050 7560 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2051 :
2052 : /* Update initial privileges for extensions */
2053 7560 : recordExtensionInitPriv(relOid, RelationRelationId, 0, new_acl);
2054 :
2055 : /* Update the shared dependency ACL info */
2056 7560 : updateAclDependencies(RelationRelationId, relOid, 0,
2057 : ownerId,
2058 : noldmembers, oldmembers,
2059 : nnewmembers, newmembers);
2060 :
2061 7560 : pfree(new_acl);
2062 : }
2063 :
2064 : /*
2065 : * Handle column-level privileges, if any were specified or implied.
2066 : * We first expand the user-specified column privileges into the
2067 : * array, and then iterate over all nonempty array entries.
2068 : */
2069 8368 : foreach(cell_colprivs, istmt->col_privs)
2070 : {
2071 410 : AccessPriv *col_privs = (AccessPriv *) lfirst(cell_colprivs);
2072 :
2073 410 : if (col_privs->priv_name == NULL)
2074 18 : this_privileges = ACL_ALL_RIGHTS_COLUMN;
2075 : else
2076 392 : this_privileges = string_to_privilege(col_privs->priv_name);
2077 :
2078 410 : if (this_privileges & ~((AclMode) ACL_ALL_RIGHTS_COLUMN))
2079 0 : ereport(ERROR,
2080 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2081 : errmsg("invalid privilege type %s for column",
2082 : privilege_to_string(this_privileges))));
2083 :
2084 410 : if (pg_class_tuple->relkind == RELKIND_SEQUENCE &&
2085 0 : this_privileges & ~((AclMode) ACL_SELECT))
2086 : {
2087 : /*
2088 : * The only column privilege allowed on sequences is SELECT.
2089 : * This is a warning not error because we do it that way for
2090 : * relation-level privileges.
2091 : */
2092 0 : ereport(WARNING,
2093 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2094 : errmsg("sequence \"%s\" only supports SELECT column privileges",
2095 : NameStr(pg_class_tuple->relname))));
2096 :
2097 0 : this_privileges &= (AclMode) ACL_SELECT;
2098 : }
2099 :
2100 410 : expand_col_privileges(col_privs->cols, relOid,
2101 : this_privileges,
2102 : col_privileges,
2103 : num_col_privileges);
2104 410 : have_col_privileges = true;
2105 : }
2106 :
2107 7958 : if (have_col_privileges)
2108 : {
2109 : AttrNumber i;
2110 :
2111 30568 : for (i = 0; i < num_col_privileges; i++)
2112 : {
2113 28660 : if (col_privileges[i] == ACL_NO_RIGHTS)
2114 10866 : continue;
2115 17794 : ExecGrant_Attribute(istmt,
2116 : relOid,
2117 17794 : NameStr(pg_class_tuple->relname),
2118 17794 : i + FirstLowInvalidHeapAttributeNumber,
2119 : ownerId,
2120 17794 : col_privileges[i],
2121 : attRelation,
2122 : old_rel_acl);
2123 : }
2124 : }
2125 :
2126 7958 : pfree(old_rel_acl);
2127 7958 : pfree(col_privileges);
2128 :
2129 7958 : ReleaseSysCache(tuple);
2130 :
2131 : /* prevent error when processing duplicate objects */
2132 7958 : CommandCounterIncrement();
2133 : }
2134 :
2135 7892 : table_close(attRelation, RowExclusiveLock);
2136 7892 : table_close(relation, RowExclusiveLock);
2137 7892 : }
2138 :
2139 : static void
2140 7464 : ExecGrant_common(InternalGrant *istmt, Oid classid, AclMode default_privs,
2141 : void (*object_check) (InternalGrant *istmt, HeapTuple tuple))
2142 : {
2143 : int cacheid;
2144 : Relation relation;
2145 : ListCell *cell;
2146 :
2147 7464 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
2148 630 : istmt->privileges = default_privs;
2149 :
2150 7464 : cacheid = get_object_catcache_oid(classid);
2151 :
2152 7464 : relation = table_open(classid, RowExclusiveLock);
2153 :
2154 14992 : foreach(cell, istmt->objects)
2155 : {
2156 7588 : Oid objectid = lfirst_oid(cell);
2157 : Datum aclDatum;
2158 : Datum nameDatum;
2159 : bool isNull;
2160 : AclMode avail_goptions;
2161 : AclMode this_privileges;
2162 : Acl *old_acl;
2163 : Acl *new_acl;
2164 : Oid grantorId;
2165 : Oid ownerId;
2166 : HeapTuple tuple;
2167 : HeapTuple newtuple;
2168 7588 : Datum *values = palloc0_array(Datum, RelationGetDescr(relation)->natts);
2169 7588 : bool *nulls = palloc0_array(bool, RelationGetDescr(relation)->natts);
2170 7588 : bool *replaces = palloc0_array(bool, RelationGetDescr(relation)->natts);
2171 : int noldmembers;
2172 : int nnewmembers;
2173 : Oid *oldmembers;
2174 : Oid *newmembers;
2175 :
2176 7588 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
2177 7588 : if (!HeapTupleIsValid(tuple))
2178 0 : elog(ERROR, "cache lookup failed for %s %u", get_object_class_descr(classid), objectid);
2179 :
2180 : /*
2181 : * Additional object-type-specific checks
2182 : */
2183 7588 : if (object_check)
2184 182 : object_check(istmt, tuple);
2185 :
2186 : /*
2187 : * Get owner ID and working copy of existing ACL. If there's no ACL,
2188 : * substitute the proper default.
2189 : */
2190 7564 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
2191 : tuple,
2192 7564 : get_object_attnum_owner(classid)));
2193 7564 : aclDatum = SysCacheGetAttr(cacheid,
2194 : tuple,
2195 7564 : get_object_attnum_acl(classid),
2196 : &isNull);
2197 7564 : if (isNull)
2198 : {
2199 5872 : old_acl = acldefault(get_object_type(classid, objectid), ownerId);
2200 : /* There are no old member roles according to the catalogs */
2201 5872 : noldmembers = 0;
2202 5872 : oldmembers = NULL;
2203 : }
2204 : else
2205 : {
2206 1692 : old_acl = DatumGetAclPCopy(aclDatum);
2207 : /* Get the roles mentioned in the existing ACL */
2208 1692 : noldmembers = aclmembers(old_acl, &oldmembers);
2209 : }
2210 :
2211 : /* Determine ID to do the grant as, and available grant options */
2212 7564 : select_best_grantor(GetUserId(), istmt->privileges,
2213 : old_acl, ownerId,
2214 : &grantorId, &avail_goptions);
2215 :
2216 7564 : nameDatum = SysCacheGetAttrNotNull(cacheid, tuple,
2217 7564 : get_object_attnum_name(classid));
2218 :
2219 : /*
2220 : * Restrict the privileges to what we can actually grant, and emit the
2221 : * standards-mandated warning and error messages.
2222 : */
2223 : this_privileges =
2224 15128 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2225 7564 : istmt->all_privs, istmt->privileges,
2226 : objectid, grantorId, get_object_type(classid, objectid),
2227 7564 : NameStr(*DatumGetName(nameDatum)),
2228 : 0, NULL);
2229 :
2230 : /*
2231 : * Generate new ACL.
2232 : */
2233 7534 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
2234 7534 : istmt->grant_option, istmt->behavior,
2235 : istmt->grantees, this_privileges,
2236 : grantorId, ownerId);
2237 :
2238 : /*
2239 : * We need the members of both old and new ACLs so we can correct the
2240 : * shared dependency information.
2241 : */
2242 7528 : nnewmembers = aclmembers(new_acl, &newmembers);
2243 :
2244 : /* finished building new ACL value, now insert it */
2245 7528 : replaces[get_object_attnum_acl(classid) - 1] = true;
2246 7528 : values[get_object_attnum_acl(classid) - 1] = PointerGetDatum(new_acl);
2247 :
2248 7528 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation), values,
2249 : nulls, replaces);
2250 :
2251 7528 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2252 :
2253 : /* Update initial privileges for extensions */
2254 7528 : recordExtensionInitPriv(objectid, classid, 0, new_acl);
2255 :
2256 : /* Update the shared dependency ACL info */
2257 7528 : updateAclDependencies(classid,
2258 : objectid, 0,
2259 : ownerId,
2260 : noldmembers, oldmembers,
2261 : nnewmembers, newmembers);
2262 :
2263 7528 : ReleaseSysCache(tuple);
2264 :
2265 7528 : pfree(new_acl);
2266 :
2267 : /* prevent error when processing duplicate objects */
2268 7528 : CommandCounterIncrement();
2269 : }
2270 :
2271 7404 : table_close(relation, RowExclusiveLock);
2272 7404 : }
2273 :
2274 : static void
2275 42 : ExecGrant_Language_check(InternalGrant *istmt, HeapTuple tuple)
2276 : {
2277 : Form_pg_language pg_language_tuple;
2278 :
2279 42 : pg_language_tuple = (Form_pg_language) GETSTRUCT(tuple);
2280 :
2281 42 : if (!pg_language_tuple->lanpltrusted)
2282 6 : ereport(ERROR,
2283 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
2284 : errmsg("language \"%s\" is not trusted",
2285 : NameStr(pg_language_tuple->lanname)),
2286 : errdetail("GRANT and REVOKE are not allowed on untrusted languages, "
2287 : "because only superusers can use untrusted languages.")));
2288 36 : }
2289 :
2290 : static void
2291 74 : ExecGrant_Largeobject(InternalGrant *istmt)
2292 : {
2293 : Relation relation;
2294 : ListCell *cell;
2295 :
2296 74 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
2297 44 : istmt->privileges = ACL_ALL_RIGHTS_LARGEOBJECT;
2298 :
2299 74 : relation = table_open(LargeObjectMetadataRelationId,
2300 : RowExclusiveLock);
2301 :
2302 154 : foreach(cell, istmt->objects)
2303 : {
2304 80 : Oid loid = lfirst_oid(cell);
2305 : Form_pg_largeobject_metadata form_lo_meta;
2306 : char loname[NAMEDATALEN];
2307 : Datum aclDatum;
2308 : bool isNull;
2309 : AclMode avail_goptions;
2310 : AclMode this_privileges;
2311 : Acl *old_acl;
2312 : Acl *new_acl;
2313 : Oid grantorId;
2314 : Oid ownerId;
2315 : HeapTuple newtuple;
2316 80 : Datum values[Natts_pg_largeobject_metadata] = {0};
2317 80 : bool nulls[Natts_pg_largeobject_metadata] = {0};
2318 80 : bool replaces[Natts_pg_largeobject_metadata] = {0};
2319 : int noldmembers;
2320 : int nnewmembers;
2321 : Oid *oldmembers;
2322 : Oid *newmembers;
2323 : ScanKeyData entry[1];
2324 : SysScanDesc scan;
2325 : HeapTuple tuple;
2326 :
2327 : /* There's no syscache for pg_largeobject_metadata */
2328 80 : ScanKeyInit(&entry[0],
2329 : Anum_pg_largeobject_metadata_oid,
2330 : BTEqualStrategyNumber, F_OIDEQ,
2331 : ObjectIdGetDatum(loid));
2332 :
2333 80 : scan = systable_beginscan(relation,
2334 : LargeObjectMetadataOidIndexId, true,
2335 : NULL, 1, entry);
2336 :
2337 80 : tuple = systable_getnext(scan);
2338 80 : if (!HeapTupleIsValid(tuple))
2339 0 : elog(ERROR, "could not find tuple for large object %u", loid);
2340 :
2341 80 : form_lo_meta = (Form_pg_largeobject_metadata) GETSTRUCT(tuple);
2342 :
2343 : /*
2344 : * Get owner ID and working copy of existing ACL. If there's no ACL,
2345 : * substitute the proper default.
2346 : */
2347 80 : ownerId = form_lo_meta->lomowner;
2348 80 : aclDatum = heap_getattr(tuple,
2349 : Anum_pg_largeobject_metadata_lomacl,
2350 : RelationGetDescr(relation), &isNull);
2351 80 : if (isNull)
2352 : {
2353 44 : old_acl = acldefault(OBJECT_LARGEOBJECT, ownerId);
2354 : /* There are no old member roles according to the catalogs */
2355 44 : noldmembers = 0;
2356 44 : oldmembers = NULL;
2357 : }
2358 : else
2359 : {
2360 36 : old_acl = DatumGetAclPCopy(aclDatum);
2361 : /* Get the roles mentioned in the existing ACL */
2362 36 : noldmembers = aclmembers(old_acl, &oldmembers);
2363 : }
2364 :
2365 : /* Determine ID to do the grant as, and available grant options */
2366 80 : select_best_grantor(GetUserId(), istmt->privileges,
2367 : old_acl, ownerId,
2368 : &grantorId, &avail_goptions);
2369 :
2370 : /*
2371 : * Restrict the privileges to what we can actually grant, and emit the
2372 : * standards-mandated warning and error messages.
2373 : */
2374 80 : snprintf(loname, sizeof(loname), "large object %u", loid);
2375 : this_privileges =
2376 80 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2377 80 : istmt->all_privs, istmt->privileges,
2378 : loid, grantorId, OBJECT_LARGEOBJECT,
2379 : loname, 0, NULL);
2380 :
2381 : /*
2382 : * Generate new ACL.
2383 : */
2384 80 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
2385 80 : istmt->grant_option, istmt->behavior,
2386 : istmt->grantees, this_privileges,
2387 : grantorId, ownerId);
2388 :
2389 : /*
2390 : * We need the members of both old and new ACLs so we can correct the
2391 : * shared dependency information.
2392 : */
2393 80 : nnewmembers = aclmembers(new_acl, &newmembers);
2394 :
2395 : /* finished building new ACL value, now insert it */
2396 80 : replaces[Anum_pg_largeobject_metadata_lomacl - 1] = true;
2397 : values[Anum_pg_largeobject_metadata_lomacl - 1]
2398 80 : = PointerGetDatum(new_acl);
2399 :
2400 80 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation),
2401 : values, nulls, replaces);
2402 :
2403 80 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2404 :
2405 : /* Update initial privileges for extensions */
2406 80 : recordExtensionInitPriv(loid, LargeObjectRelationId, 0, new_acl);
2407 :
2408 : /* Update the shared dependency ACL info */
2409 80 : updateAclDependencies(LargeObjectRelationId,
2410 : form_lo_meta->oid, 0,
2411 : ownerId,
2412 : noldmembers, oldmembers,
2413 : nnewmembers, newmembers);
2414 :
2415 80 : systable_endscan(scan);
2416 :
2417 80 : pfree(new_acl);
2418 :
2419 : /* prevent error when processing duplicate objects */
2420 80 : CommandCounterIncrement();
2421 : }
2422 :
2423 74 : table_close(relation, RowExclusiveLock);
2424 74 : }
2425 :
2426 : static void
2427 140 : ExecGrant_Type_check(InternalGrant *istmt, HeapTuple tuple)
2428 : {
2429 : Form_pg_type pg_type_tuple;
2430 :
2431 140 : pg_type_tuple = (Form_pg_type) GETSTRUCT(tuple);
2432 :
2433 : /* Disallow GRANT on dependent types */
2434 140 : if (IsTrueArrayType(pg_type_tuple))
2435 6 : ereport(ERROR,
2436 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2437 : errmsg("cannot set privileges of array types"),
2438 : errhint("Set the privileges of the element type instead.")));
2439 134 : if (pg_type_tuple->typtype == TYPTYPE_MULTIRANGE)
2440 6 : ereport(ERROR,
2441 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2442 : errmsg("cannot set privileges of multirange types"),
2443 : errhint("Set the privileges of the range type instead.")));
2444 :
2445 : /* Used GRANT DOMAIN on a non-domain? */
2446 128 : if (istmt->objtype == OBJECT_DOMAIN &&
2447 26 : pg_type_tuple->typtype != TYPTYPE_DOMAIN)
2448 6 : ereport(ERROR,
2449 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
2450 : errmsg("\"%s\" is not a domain",
2451 : NameStr(pg_type_tuple->typname))));
2452 122 : }
2453 :
2454 : static void
2455 96 : ExecGrant_Parameter(InternalGrant *istmt)
2456 : {
2457 : Relation relation;
2458 : ListCell *cell;
2459 :
2460 96 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
2461 42 : istmt->privileges = ACL_ALL_RIGHTS_PARAMETER_ACL;
2462 :
2463 96 : relation = table_open(ParameterAclRelationId, RowExclusiveLock);
2464 :
2465 230 : foreach(cell, istmt->objects)
2466 : {
2467 134 : Oid parameterId = lfirst_oid(cell);
2468 : Datum nameDatum;
2469 : const char *parname;
2470 : Datum aclDatum;
2471 : bool isNull;
2472 : AclMode avail_goptions;
2473 : AclMode this_privileges;
2474 : Acl *old_acl;
2475 : Acl *new_acl;
2476 : Oid grantorId;
2477 : Oid ownerId;
2478 : HeapTuple tuple;
2479 : int noldmembers;
2480 : int nnewmembers;
2481 : Oid *oldmembers;
2482 : Oid *newmembers;
2483 :
2484 134 : tuple = SearchSysCache1(PARAMETERACLOID, ObjectIdGetDatum(parameterId));
2485 134 : if (!HeapTupleIsValid(tuple))
2486 0 : elog(ERROR, "cache lookup failed for parameter ACL %u",
2487 : parameterId);
2488 :
2489 : /* We'll need the GUC's name */
2490 134 : nameDatum = SysCacheGetAttrNotNull(PARAMETERACLOID, tuple,
2491 : Anum_pg_parameter_acl_parname);
2492 134 : parname = TextDatumGetCString(nameDatum);
2493 :
2494 : /* Treat all parameters as belonging to the bootstrap superuser. */
2495 134 : ownerId = BOOTSTRAP_SUPERUSERID;
2496 :
2497 : /*
2498 : * Get working copy of existing ACL. If there's no ACL, substitute the
2499 : * proper default.
2500 : */
2501 134 : aclDatum = SysCacheGetAttr(PARAMETERACLOID, tuple,
2502 : Anum_pg_parameter_acl_paracl,
2503 : &isNull);
2504 :
2505 134 : if (isNull)
2506 : {
2507 66 : old_acl = acldefault(istmt->objtype, ownerId);
2508 : /* There are no old member roles according to the catalogs */
2509 66 : noldmembers = 0;
2510 66 : oldmembers = NULL;
2511 : }
2512 : else
2513 : {
2514 68 : old_acl = DatumGetAclPCopy(aclDatum);
2515 : /* Get the roles mentioned in the existing ACL */
2516 68 : noldmembers = aclmembers(old_acl, &oldmembers);
2517 : }
2518 :
2519 : /* Determine ID to do the grant as, and available grant options */
2520 134 : select_best_grantor(GetUserId(), istmt->privileges,
2521 : old_acl, ownerId,
2522 : &grantorId, &avail_goptions);
2523 :
2524 : /*
2525 : * Restrict the privileges to what we can actually grant, and emit the
2526 : * standards-mandated warning and error messages.
2527 : */
2528 : this_privileges =
2529 134 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2530 134 : istmt->all_privs, istmt->privileges,
2531 : parameterId, grantorId,
2532 : OBJECT_PARAMETER_ACL,
2533 : parname,
2534 : 0, NULL);
2535 :
2536 : /*
2537 : * Generate new ACL.
2538 : */
2539 134 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
2540 134 : istmt->grant_option, istmt->behavior,
2541 : istmt->grantees, this_privileges,
2542 : grantorId, ownerId);
2543 :
2544 : /*
2545 : * We need the members of both old and new ACLs so we can correct the
2546 : * shared dependency information.
2547 : */
2548 134 : nnewmembers = aclmembers(new_acl, &newmembers);
2549 :
2550 : /*
2551 : * If the new ACL is equal to the default, we don't need the catalog
2552 : * entry any longer. Delete it rather than updating it, to avoid
2553 : * leaving a degenerate entry.
2554 : */
2555 134 : if (aclequal(new_acl, acldefault(istmt->objtype, ownerId)))
2556 : {
2557 58 : CatalogTupleDelete(relation, &tuple->t_self);
2558 : }
2559 : else
2560 : {
2561 : /* finished building new ACL value, now insert it */
2562 : HeapTuple newtuple;
2563 76 : Datum values[Natts_pg_parameter_acl] = {0};
2564 76 : bool nulls[Natts_pg_parameter_acl] = {0};
2565 76 : bool replaces[Natts_pg_parameter_acl] = {0};
2566 :
2567 76 : replaces[Anum_pg_parameter_acl_paracl - 1] = true;
2568 76 : values[Anum_pg_parameter_acl_paracl - 1] = PointerGetDatum(new_acl);
2569 :
2570 76 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation),
2571 : values, nulls, replaces);
2572 :
2573 76 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2574 : }
2575 :
2576 : /* Update initial privileges for extensions */
2577 134 : recordExtensionInitPriv(parameterId, ParameterAclRelationId, 0,
2578 : new_acl);
2579 :
2580 : /* Update the shared dependency ACL info */
2581 134 : updateAclDependencies(ParameterAclRelationId, parameterId, 0,
2582 : ownerId,
2583 : noldmembers, oldmembers,
2584 : nnewmembers, newmembers);
2585 :
2586 134 : ReleaseSysCache(tuple);
2587 134 : pfree(new_acl);
2588 :
2589 : /* prevent error when processing duplicate objects */
2590 134 : CommandCounterIncrement();
2591 : }
2592 :
2593 96 : table_close(relation, RowExclusiveLock);
2594 96 : }
2595 :
2596 :
2597 : static AclMode
2598 13828 : string_to_privilege(const char *privname)
2599 : {
2600 13828 : if (strcmp(privname, "insert") == 0)
2601 222 : return ACL_INSERT;
2602 13606 : if (strcmp(privname, "select") == 0)
2603 5914 : return ACL_SELECT;
2604 7692 : if (strcmp(privname, "update") == 0)
2605 322 : return ACL_UPDATE;
2606 7370 : if (strcmp(privname, "delete") == 0)
2607 114 : return ACL_DELETE;
2608 7256 : if (strcmp(privname, "truncate") == 0)
2609 34 : return ACL_TRUNCATE;
2610 7222 : if (strcmp(privname, "references") == 0)
2611 14 : return ACL_REFERENCES;
2612 7208 : if (strcmp(privname, "trigger") == 0)
2613 8 : return ACL_TRIGGER;
2614 7200 : if (strcmp(privname, "execute") == 0)
2615 6072 : return ACL_EXECUTE;
2616 1128 : if (strcmp(privname, "usage") == 0)
2617 602 : return ACL_USAGE;
2618 526 : if (strcmp(privname, "create") == 0)
2619 250 : return ACL_CREATE;
2620 276 : if (strcmp(privname, "temporary") == 0)
2621 158 : return ACL_CREATE_TEMP;
2622 118 : if (strcmp(privname, "temp") == 0)
2623 0 : return ACL_CREATE_TEMP;
2624 118 : if (strcmp(privname, "connect") == 0)
2625 14 : return ACL_CONNECT;
2626 104 : if (strcmp(privname, "set") == 0)
2627 48 : return ACL_SET;
2628 56 : if (strcmp(privname, "alter system") == 0)
2629 24 : return ACL_ALTER_SYSTEM;
2630 32 : if (strcmp(privname, "maintain") == 0)
2631 32 : return ACL_MAINTAIN;
2632 0 : if (strcmp(privname, "rule") == 0)
2633 0 : return 0; /* ignore old RULE privileges */
2634 0 : ereport(ERROR,
2635 : (errcode(ERRCODE_SYNTAX_ERROR),
2636 : errmsg("unrecognized privilege type \"%s\"", privname)));
2637 : return 0; /* appease compiler */
2638 : }
2639 :
2640 : static const char *
2641 24 : privilege_to_string(AclMode privilege)
2642 : {
2643 24 : switch (privilege)
2644 : {
2645 6 : case ACL_INSERT:
2646 6 : return "INSERT";
2647 0 : case ACL_SELECT:
2648 0 : return "SELECT";
2649 0 : case ACL_UPDATE:
2650 0 : return "UPDATE";
2651 0 : case ACL_DELETE:
2652 0 : return "DELETE";
2653 0 : case ACL_TRUNCATE:
2654 0 : return "TRUNCATE";
2655 0 : case ACL_REFERENCES:
2656 0 : return "REFERENCES";
2657 0 : case ACL_TRIGGER:
2658 0 : return "TRIGGER";
2659 0 : case ACL_EXECUTE:
2660 0 : return "EXECUTE";
2661 18 : case ACL_USAGE:
2662 18 : return "USAGE";
2663 0 : case ACL_CREATE:
2664 0 : return "CREATE";
2665 0 : case ACL_CREATE_TEMP:
2666 0 : return "TEMP";
2667 0 : case ACL_CONNECT:
2668 0 : return "CONNECT";
2669 0 : case ACL_SET:
2670 0 : return "SET";
2671 0 : case ACL_ALTER_SYSTEM:
2672 0 : return "ALTER SYSTEM";
2673 0 : case ACL_MAINTAIN:
2674 0 : return "MAINTAIN";
2675 0 : default:
2676 0 : elog(ERROR, "unrecognized privilege: %d", (int) privilege);
2677 : }
2678 : return NULL; /* appease compiler */
2679 : }
2680 :
2681 : /*
2682 : * Standardized reporting of aclcheck permissions failures.
2683 : *
2684 : * Note: we do not double-quote the %s's below, because many callers
2685 : * supply strings that might be already quoted.
2686 : */
2687 : void
2688 2608 : aclcheck_error(AclResult aclerr, ObjectType objtype,
2689 : const char *objectname)
2690 : {
2691 2608 : switch (aclerr)
2692 : {
2693 0 : case ACLCHECK_OK:
2694 : /* no error, so return to caller */
2695 0 : break;
2696 2094 : case ACLCHECK_NO_PRIV:
2697 : {
2698 2094 : const char *msg = "???";
2699 :
2700 : switch (objtype)
2701 : {
2702 6 : case OBJECT_AGGREGATE:
2703 6 : msg = gettext_noop("permission denied for aggregate %s");
2704 6 : break;
2705 0 : case OBJECT_COLLATION:
2706 0 : msg = gettext_noop("permission denied for collation %s");
2707 0 : break;
2708 0 : case OBJECT_COLUMN:
2709 0 : msg = gettext_noop("permission denied for column %s");
2710 0 : break;
2711 0 : case OBJECT_CONVERSION:
2712 0 : msg = gettext_noop("permission denied for conversion %s");
2713 0 : break;
2714 18 : case OBJECT_DATABASE:
2715 18 : msg = gettext_noop("permission denied for database %s");
2716 18 : break;
2717 0 : case OBJECT_DOMAIN:
2718 0 : msg = gettext_noop("permission denied for domain %s");
2719 0 : break;
2720 0 : case OBJECT_EVENT_TRIGGER:
2721 0 : msg = gettext_noop("permission denied for event trigger %s");
2722 0 : break;
2723 0 : case OBJECT_EXTENSION:
2724 0 : msg = gettext_noop("permission denied for extension %s");
2725 0 : break;
2726 44 : case OBJECT_FDW:
2727 44 : msg = gettext_noop("permission denied for foreign-data wrapper %s");
2728 44 : break;
2729 20 : case OBJECT_FOREIGN_SERVER:
2730 20 : msg = gettext_noop("permission denied for foreign server %s");
2731 20 : break;
2732 2 : case OBJECT_FOREIGN_TABLE:
2733 2 : msg = gettext_noop("permission denied for foreign table %s");
2734 2 : break;
2735 90 : case OBJECT_FUNCTION:
2736 90 : msg = gettext_noop("permission denied for function %s");
2737 90 : break;
2738 12 : case OBJECT_INDEX:
2739 12 : msg = gettext_noop("permission denied for index %s");
2740 12 : break;
2741 8 : case OBJECT_LANGUAGE:
2742 8 : msg = gettext_noop("permission denied for language %s");
2743 8 : break;
2744 0 : case OBJECT_LARGEOBJECT:
2745 0 : msg = gettext_noop("permission denied for large object %s");
2746 0 : break;
2747 6 : case OBJECT_MATVIEW:
2748 6 : msg = gettext_noop("permission denied for materialized view %s");
2749 6 : break;
2750 0 : case OBJECT_OPCLASS:
2751 0 : msg = gettext_noop("permission denied for operator class %s");
2752 0 : break;
2753 0 : case OBJECT_OPERATOR:
2754 0 : msg = gettext_noop("permission denied for operator %s");
2755 0 : break;
2756 0 : case OBJECT_OPFAMILY:
2757 0 : msg = gettext_noop("permission denied for operator family %s");
2758 0 : break;
2759 0 : case OBJECT_PARAMETER_ACL:
2760 0 : msg = gettext_noop("permission denied for parameter %s");
2761 0 : break;
2762 0 : case OBJECT_POLICY:
2763 0 : msg = gettext_noop("permission denied for policy %s");
2764 0 : break;
2765 12 : case OBJECT_PROCEDURE:
2766 12 : msg = gettext_noop("permission denied for procedure %s");
2767 12 : break;
2768 0 : case OBJECT_PUBLICATION:
2769 0 : msg = gettext_noop("permission denied for publication %s");
2770 0 : break;
2771 0 : case OBJECT_ROUTINE:
2772 0 : msg = gettext_noop("permission denied for routine %s");
2773 0 : break;
2774 14 : case OBJECT_SCHEMA:
2775 14 : msg = gettext_noop("permission denied for schema %s");
2776 14 : break;
2777 0 : case OBJECT_SEQUENCE:
2778 0 : msg = gettext_noop("permission denied for sequence %s");
2779 0 : break;
2780 0 : case OBJECT_STATISTIC_EXT:
2781 0 : msg = gettext_noop("permission denied for statistics object %s");
2782 0 : break;
2783 0 : case OBJECT_SUBSCRIPTION:
2784 0 : msg = gettext_noop("permission denied for subscription %s");
2785 0 : break;
2786 1338 : case OBJECT_TABLE:
2787 1338 : msg = gettext_noop("permission denied for table %s");
2788 1338 : break;
2789 18 : case OBJECT_TABLESPACE:
2790 18 : msg = gettext_noop("permission denied for tablespace %s");
2791 18 : break;
2792 0 : case OBJECT_TSCONFIGURATION:
2793 0 : msg = gettext_noop("permission denied for text search configuration %s");
2794 0 : break;
2795 0 : case OBJECT_TSDICTIONARY:
2796 0 : msg = gettext_noop("permission denied for text search dictionary %s");
2797 0 : break;
2798 120 : case OBJECT_TYPE:
2799 120 : msg = gettext_noop("permission denied for type %s");
2800 120 : break;
2801 386 : case OBJECT_VIEW:
2802 386 : msg = gettext_noop("permission denied for view %s");
2803 386 : break;
2804 : /* these currently aren't used */
2805 0 : case OBJECT_ACCESS_METHOD:
2806 : case OBJECT_AMOP:
2807 : case OBJECT_AMPROC:
2808 : case OBJECT_ATTRIBUTE:
2809 : case OBJECT_CAST:
2810 : case OBJECT_DEFAULT:
2811 : case OBJECT_DEFACL:
2812 : case OBJECT_DOMCONSTRAINT:
2813 : case OBJECT_PUBLICATION_NAMESPACE:
2814 : case OBJECT_PUBLICATION_REL:
2815 : case OBJECT_ROLE:
2816 : case OBJECT_RULE:
2817 : case OBJECT_TABCONSTRAINT:
2818 : case OBJECT_TRANSFORM:
2819 : case OBJECT_TRIGGER:
2820 : case OBJECT_TSPARSER:
2821 : case OBJECT_TSTEMPLATE:
2822 : case OBJECT_USER_MAPPING:
2823 0 : elog(ERROR, "unsupported object type: %d", objtype);
2824 : }
2825 :
2826 2094 : ereport(ERROR,
2827 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2828 : errmsg(msg, objectname)));
2829 : break;
2830 : }
2831 514 : case ACLCHECK_NOT_OWNER:
2832 : {
2833 514 : const char *msg = "???";
2834 :
2835 : switch (objtype)
2836 : {
2837 6 : case OBJECT_AGGREGATE:
2838 6 : msg = gettext_noop("must be owner of aggregate %s");
2839 6 : break;
2840 0 : case OBJECT_COLLATION:
2841 0 : msg = gettext_noop("must be owner of collation %s");
2842 0 : break;
2843 18 : case OBJECT_CONVERSION:
2844 18 : msg = gettext_noop("must be owner of conversion %s");
2845 18 : break;
2846 0 : case OBJECT_DATABASE:
2847 0 : msg = gettext_noop("must be owner of database %s");
2848 0 : break;
2849 0 : case OBJECT_DOMAIN:
2850 0 : msg = gettext_noop("must be owner of domain %s");
2851 0 : break;
2852 0 : case OBJECT_EVENT_TRIGGER:
2853 0 : msg = gettext_noop("must be owner of event trigger %s");
2854 0 : break;
2855 0 : case OBJECT_EXTENSION:
2856 0 : msg = gettext_noop("must be owner of extension %s");
2857 0 : break;
2858 18 : case OBJECT_FDW:
2859 18 : msg = gettext_noop("must be owner of foreign-data wrapper %s");
2860 18 : break;
2861 114 : case OBJECT_FOREIGN_SERVER:
2862 114 : msg = gettext_noop("must be owner of foreign server %s");
2863 114 : break;
2864 0 : case OBJECT_FOREIGN_TABLE:
2865 0 : msg = gettext_noop("must be owner of foreign table %s");
2866 0 : break;
2867 42 : case OBJECT_FUNCTION:
2868 42 : msg = gettext_noop("must be owner of function %s");
2869 42 : break;
2870 24 : case OBJECT_INDEX:
2871 24 : msg = gettext_noop("must be owner of index %s");
2872 24 : break;
2873 12 : case OBJECT_LANGUAGE:
2874 12 : msg = gettext_noop("must be owner of language %s");
2875 12 : break;
2876 0 : case OBJECT_LARGEOBJECT:
2877 0 : msg = gettext_noop("must be owner of large object %s");
2878 0 : break;
2879 0 : case OBJECT_MATVIEW:
2880 0 : msg = gettext_noop("must be owner of materialized view %s");
2881 0 : break;
2882 18 : case OBJECT_OPCLASS:
2883 18 : msg = gettext_noop("must be owner of operator class %s");
2884 18 : break;
2885 18 : case OBJECT_OPERATOR:
2886 18 : msg = gettext_noop("must be owner of operator %s");
2887 18 : break;
2888 18 : case OBJECT_OPFAMILY:
2889 18 : msg = gettext_noop("must be owner of operator family %s");
2890 18 : break;
2891 6 : case OBJECT_PROCEDURE:
2892 6 : msg = gettext_noop("must be owner of procedure %s");
2893 6 : break;
2894 6 : case OBJECT_PUBLICATION:
2895 6 : msg = gettext_noop("must be owner of publication %s");
2896 6 : break;
2897 0 : case OBJECT_ROUTINE:
2898 0 : msg = gettext_noop("must be owner of routine %s");
2899 0 : break;
2900 6 : case OBJECT_SEQUENCE:
2901 6 : msg = gettext_noop("must be owner of sequence %s");
2902 6 : break;
2903 6 : case OBJECT_SUBSCRIPTION:
2904 6 : msg = gettext_noop("must be owner of subscription %s");
2905 6 : break;
2906 70 : case OBJECT_TABLE:
2907 70 : msg = gettext_noop("must be owner of table %s");
2908 70 : break;
2909 6 : case OBJECT_TYPE:
2910 6 : msg = gettext_noop("must be owner of type %s");
2911 6 : break;
2912 18 : case OBJECT_VIEW:
2913 18 : msg = gettext_noop("must be owner of view %s");
2914 18 : break;
2915 18 : case OBJECT_SCHEMA:
2916 18 : msg = gettext_noop("must be owner of schema %s");
2917 18 : break;
2918 36 : case OBJECT_STATISTIC_EXT:
2919 36 : msg = gettext_noop("must be owner of statistics object %s");
2920 36 : break;
2921 0 : case OBJECT_TABLESPACE:
2922 0 : msg = gettext_noop("must be owner of tablespace %s");
2923 0 : break;
2924 18 : case OBJECT_TSCONFIGURATION:
2925 18 : msg = gettext_noop("must be owner of text search configuration %s");
2926 18 : break;
2927 18 : case OBJECT_TSDICTIONARY:
2928 18 : msg = gettext_noop("must be owner of text search dictionary %s");
2929 18 : break;
2930 :
2931 : /*
2932 : * Special cases: For these, the error message talks
2933 : * about "relation", because that's where the
2934 : * ownership is attached. See also
2935 : * check_object_ownership().
2936 : */
2937 18 : case OBJECT_COLUMN:
2938 : case OBJECT_POLICY:
2939 : case OBJECT_RULE:
2940 : case OBJECT_TABCONSTRAINT:
2941 : case OBJECT_TRIGGER:
2942 18 : msg = gettext_noop("must be owner of relation %s");
2943 18 : break;
2944 : /* these currently aren't used */
2945 0 : case OBJECT_ACCESS_METHOD:
2946 : case OBJECT_AMOP:
2947 : case OBJECT_AMPROC:
2948 : case OBJECT_ATTRIBUTE:
2949 : case OBJECT_CAST:
2950 : case OBJECT_DEFAULT:
2951 : case OBJECT_DEFACL:
2952 : case OBJECT_DOMCONSTRAINT:
2953 : case OBJECT_PARAMETER_ACL:
2954 : case OBJECT_PUBLICATION_NAMESPACE:
2955 : case OBJECT_PUBLICATION_REL:
2956 : case OBJECT_ROLE:
2957 : case OBJECT_TRANSFORM:
2958 : case OBJECT_TSPARSER:
2959 : case OBJECT_TSTEMPLATE:
2960 : case OBJECT_USER_MAPPING:
2961 0 : elog(ERROR, "unsupported object type: %d", objtype);
2962 : }
2963 :
2964 514 : ereport(ERROR,
2965 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2966 : errmsg(msg, objectname)));
2967 : break;
2968 : }
2969 0 : default:
2970 0 : elog(ERROR, "unrecognized AclResult: %d", (int) aclerr);
2971 : break;
2972 : }
2973 0 : }
2974 :
2975 :
2976 : void
2977 0 : aclcheck_error_col(AclResult aclerr, ObjectType objtype,
2978 : const char *objectname, const char *colname)
2979 : {
2980 0 : switch (aclerr)
2981 : {
2982 0 : case ACLCHECK_OK:
2983 : /* no error, so return to caller */
2984 0 : break;
2985 0 : case ACLCHECK_NO_PRIV:
2986 0 : ereport(ERROR,
2987 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2988 : errmsg("permission denied for column \"%s\" of relation \"%s\"",
2989 : colname, objectname)));
2990 : break;
2991 0 : case ACLCHECK_NOT_OWNER:
2992 : /* relation msg is OK since columns don't have separate owners */
2993 0 : aclcheck_error(aclerr, objtype, objectname);
2994 0 : break;
2995 0 : default:
2996 0 : elog(ERROR, "unrecognized AclResult: %d", (int) aclerr);
2997 : break;
2998 : }
2999 0 : }
3000 :
3001 :
3002 : /*
3003 : * Special common handling for types: use element type instead of array type,
3004 : * and format nicely
3005 : */
3006 : void
3007 120 : aclcheck_error_type(AclResult aclerr, Oid typeOid)
3008 : {
3009 120 : Oid element_type = get_element_type(typeOid);
3010 :
3011 120 : aclcheck_error(aclerr, OBJECT_TYPE, format_type_be(element_type ? element_type : typeOid));
3012 0 : }
3013 :
3014 :
3015 : /*
3016 : * Relay for the various pg_*_mask routines depending on object kind
3017 : */
3018 : static AclMode
3019 66 : pg_aclmask(ObjectType objtype, Oid object_oid, AttrNumber attnum, Oid roleid,
3020 : AclMode mask, AclMaskHow how)
3021 : {
3022 66 : switch (objtype)
3023 : {
3024 0 : case OBJECT_COLUMN:
3025 : return
3026 0 : pg_class_aclmask(object_oid, roleid, mask, how) |
3027 0 : pg_attribute_aclmask(object_oid, attnum, roleid, mask, how);
3028 12 : case OBJECT_TABLE:
3029 : case OBJECT_SEQUENCE:
3030 12 : return pg_class_aclmask(object_oid, roleid, mask, how);
3031 0 : case OBJECT_DATABASE:
3032 0 : return object_aclmask(DatabaseRelationId, object_oid, roleid, mask, how);
3033 0 : case OBJECT_FUNCTION:
3034 0 : return object_aclmask(ProcedureRelationId, object_oid, roleid, mask, how);
3035 6 : case OBJECT_LANGUAGE:
3036 6 : return object_aclmask(LanguageRelationId, object_oid, roleid, mask, how);
3037 0 : case OBJECT_LARGEOBJECT:
3038 0 : return pg_largeobject_aclmask_snapshot(object_oid, roleid,
3039 : mask, how, NULL);
3040 0 : case OBJECT_PARAMETER_ACL:
3041 0 : return pg_parameter_acl_aclmask(object_oid, roleid, mask, how);
3042 0 : case OBJECT_SCHEMA:
3043 0 : return object_aclmask(NamespaceRelationId, object_oid, roleid, mask, how);
3044 0 : case OBJECT_STATISTIC_EXT:
3045 0 : elog(ERROR, "grantable rights not supported for statistics objects");
3046 : /* not reached, but keep compiler quiet */
3047 : return ACL_NO_RIGHTS;
3048 0 : case OBJECT_TABLESPACE:
3049 0 : return object_aclmask(TableSpaceRelationId, object_oid, roleid, mask, how);
3050 18 : case OBJECT_FDW:
3051 18 : return object_aclmask(ForeignDataWrapperRelationId, object_oid, roleid, mask, how);
3052 18 : case OBJECT_FOREIGN_SERVER:
3053 18 : return object_aclmask(ForeignServerRelationId, object_oid, roleid, mask, how);
3054 0 : case OBJECT_EVENT_TRIGGER:
3055 0 : elog(ERROR, "grantable rights not supported for event triggers");
3056 : /* not reached, but keep compiler quiet */
3057 : return ACL_NO_RIGHTS;
3058 12 : case OBJECT_TYPE:
3059 12 : return object_aclmask(TypeRelationId, object_oid, roleid, mask, how);
3060 0 : default:
3061 0 : elog(ERROR, "unrecognized object type: %d",
3062 : (int) objtype);
3063 : /* not reached, but keep compiler quiet */
3064 : return ACL_NO_RIGHTS;
3065 : }
3066 : }
3067 :
3068 :
3069 : /* ****************************************************************
3070 : * Exported routines for examining a user's privileges for various objects
3071 : *
3072 : * See aclmask() for a description of the common API for these functions.
3073 : *
3074 : * Note: we give lookup failure the full ereport treatment because the
3075 : * has_xxx_privilege() family of functions allow users to pass any random
3076 : * OID to these functions.
3077 : * ****************************************************************
3078 : */
3079 :
3080 : /*
3081 : * Generic routine for examining a user's privileges for an object
3082 : */
3083 : static AclMode
3084 54 : object_aclmask(Oid classid, Oid objectid, Oid roleid,
3085 : AclMode mask, AclMaskHow how)
3086 : {
3087 54 : return object_aclmask_ext(classid, objectid, roleid, mask, how, NULL);
3088 : }
3089 :
3090 : /*
3091 : * Generic routine for examining a user's privileges for an object,
3092 : * with is_missing
3093 : */
3094 : static AclMode
3095 2887122 : object_aclmask_ext(Oid classid, Oid objectid, Oid roleid,
3096 : AclMode mask, AclMaskHow how,
3097 : bool *is_missing)
3098 : {
3099 : int cacheid;
3100 : AclMode result;
3101 : HeapTuple tuple;
3102 : Datum aclDatum;
3103 : bool isNull;
3104 : Acl *acl;
3105 : Oid ownerId;
3106 :
3107 : /* Special cases */
3108 2887122 : switch (classid)
3109 : {
3110 810128 : case NamespaceRelationId:
3111 810128 : return pg_namespace_aclmask_ext(objectid, roleid, mask, how,
3112 : is_missing);
3113 290872 : case TypeRelationId:
3114 290872 : return pg_type_aclmask_ext(objectid, roleid, mask, how,
3115 : is_missing);
3116 : }
3117 :
3118 : /* Even more special cases */
3119 : Assert(classid != RelationRelationId); /* should use pg_class_acl* */
3120 : Assert(classid != LargeObjectMetadataRelationId); /* should use
3121 : * pg_largeobject_acl* */
3122 :
3123 : /* Superusers bypass all permission checking. */
3124 1786122 : if (superuser_arg(roleid))
3125 1748672 : return mask;
3126 :
3127 : /*
3128 : * Get the object's ACL from its catalog
3129 : */
3130 :
3131 37450 : cacheid = get_object_catcache_oid(classid);
3132 :
3133 37450 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
3134 37450 : if (!HeapTupleIsValid(tuple))
3135 : {
3136 0 : if (is_missing != NULL)
3137 : {
3138 : /* return "no privileges" instead of throwing an error */
3139 0 : *is_missing = true;
3140 0 : return 0;
3141 : }
3142 : else
3143 0 : ereport(ERROR,
3144 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3145 : errmsg("%s with OID %u does not exist",
3146 : get_object_class_descr(classid), objectid)));
3147 : }
3148 :
3149 37450 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
3150 : tuple,
3151 37450 : get_object_attnum_owner(classid)));
3152 :
3153 37450 : aclDatum = SysCacheGetAttr(cacheid, tuple, get_object_attnum_acl(classid),
3154 : &isNull);
3155 37450 : if (isNull)
3156 : {
3157 : /* No ACL, so build default ACL */
3158 34958 : acl = acldefault(get_object_type(classid, objectid), ownerId);
3159 34958 : aclDatum = (Datum) 0;
3160 : }
3161 : else
3162 : {
3163 : /* detoast ACL if necessary */
3164 2492 : acl = DatumGetAclP(aclDatum);
3165 : }
3166 :
3167 37450 : result = aclmask(acl, roleid, ownerId, mask, how);
3168 :
3169 : /* if we have a detoasted copy, free it */
3170 37450 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3171 37450 : pfree(acl);
3172 :
3173 37450 : ReleaseSysCache(tuple);
3174 :
3175 37450 : return result;
3176 : }
3177 :
3178 : /*
3179 : * Routine for examining a user's privileges for a column
3180 : *
3181 : * Note: this considers only privileges granted specifically on the column.
3182 : * It is caller's responsibility to take relation-level privileges into account
3183 : * as appropriate. (For the same reason, we have no special case for
3184 : * superuser-ness here.)
3185 : */
3186 : static AclMode
3187 0 : pg_attribute_aclmask(Oid table_oid, AttrNumber attnum, Oid roleid,
3188 : AclMode mask, AclMaskHow how)
3189 : {
3190 0 : return pg_attribute_aclmask_ext(table_oid, attnum, roleid,
3191 : mask, how, NULL);
3192 : }
3193 :
3194 : /*
3195 : * Routine for examining a user's privileges for a column, with is_missing
3196 : */
3197 : static AclMode
3198 5362 : pg_attribute_aclmask_ext(Oid table_oid, AttrNumber attnum, Oid roleid,
3199 : AclMode mask, AclMaskHow how, bool *is_missing)
3200 : {
3201 : AclMode result;
3202 : HeapTuple classTuple;
3203 : HeapTuple attTuple;
3204 : Form_pg_class classForm;
3205 : Form_pg_attribute attributeForm;
3206 : Datum aclDatum;
3207 : bool isNull;
3208 : Acl *acl;
3209 : Oid ownerId;
3210 :
3211 : /*
3212 : * First, get the column's ACL from its pg_attribute entry
3213 : */
3214 5362 : attTuple = SearchSysCache2(ATTNUM,
3215 : ObjectIdGetDatum(table_oid),
3216 : Int16GetDatum(attnum));
3217 5362 : if (!HeapTupleIsValid(attTuple))
3218 : {
3219 30 : if (is_missing != NULL)
3220 : {
3221 : /* return "no privileges" instead of throwing an error */
3222 30 : *is_missing = true;
3223 30 : return 0;
3224 : }
3225 : else
3226 0 : ereport(ERROR,
3227 : (errcode(ERRCODE_UNDEFINED_COLUMN),
3228 : errmsg("attribute %d of relation with OID %u does not exist",
3229 : attnum, table_oid)));
3230 : }
3231 :
3232 5332 : attributeForm = (Form_pg_attribute) GETSTRUCT(attTuple);
3233 :
3234 : /* Check dropped columns, too */
3235 5332 : if (attributeForm->attisdropped)
3236 : {
3237 12 : if (is_missing != NULL)
3238 : {
3239 : /* return "no privileges" instead of throwing an error */
3240 12 : *is_missing = true;
3241 12 : ReleaseSysCache(attTuple);
3242 12 : return 0;
3243 : }
3244 : else
3245 0 : ereport(ERROR,
3246 : (errcode(ERRCODE_UNDEFINED_COLUMN),
3247 : errmsg("attribute %d of relation with OID %u does not exist",
3248 : attnum, table_oid)));
3249 : }
3250 :
3251 5320 : aclDatum = SysCacheGetAttr(ATTNUM, attTuple, Anum_pg_attribute_attacl,
3252 : &isNull);
3253 :
3254 : /*
3255 : * Here we hard-wire knowledge that the default ACL for a column grants no
3256 : * privileges, so that we can fall out quickly in the very common case
3257 : * where attacl is null.
3258 : */
3259 5320 : if (isNull)
3260 : {
3261 2826 : ReleaseSysCache(attTuple);
3262 2826 : return 0;
3263 : }
3264 :
3265 : /*
3266 : * Must get the relation's ownerId from pg_class. Since we already found
3267 : * a pg_attribute entry, the only likely reason for this to fail is that a
3268 : * concurrent DROP of the relation committed since then (which could only
3269 : * happen if we don't have lock on the relation). Treat that similarly to
3270 : * not finding the attribute entry.
3271 : */
3272 2494 : classTuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
3273 2494 : if (!HeapTupleIsValid(classTuple))
3274 : {
3275 0 : ReleaseSysCache(attTuple);
3276 0 : if (is_missing != NULL)
3277 : {
3278 : /* return "no privileges" instead of throwing an error */
3279 0 : *is_missing = true;
3280 0 : return 0;
3281 : }
3282 : else
3283 0 : ereport(ERROR,
3284 : (errcode(ERRCODE_UNDEFINED_TABLE),
3285 : errmsg("relation with OID %u does not exist",
3286 : table_oid)));
3287 : }
3288 2494 : classForm = (Form_pg_class) GETSTRUCT(classTuple);
3289 :
3290 2494 : ownerId = classForm->relowner;
3291 :
3292 2494 : ReleaseSysCache(classTuple);
3293 :
3294 : /* detoast column's ACL if necessary */
3295 2494 : acl = DatumGetAclP(aclDatum);
3296 :
3297 2494 : result = aclmask(acl, roleid, ownerId, mask, how);
3298 :
3299 : /* if we have a detoasted copy, free it */
3300 2494 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3301 2494 : pfree(acl);
3302 :
3303 2494 : ReleaseSysCache(attTuple);
3304 :
3305 2494 : return result;
3306 : }
3307 :
3308 : /*
3309 : * Exported routine for examining a user's privileges for a table
3310 : */
3311 : AclMode
3312 506808 : pg_class_aclmask(Oid table_oid, Oid roleid,
3313 : AclMode mask, AclMaskHow how)
3314 : {
3315 506808 : return pg_class_aclmask_ext(table_oid, roleid, mask, how, NULL);
3316 : }
3317 :
3318 : /*
3319 : * Routine for examining a user's privileges for a table, with is_missing
3320 : */
3321 : static AclMode
3322 2424740 : pg_class_aclmask_ext(Oid table_oid, Oid roleid, AclMode mask,
3323 : AclMaskHow how, bool *is_missing)
3324 : {
3325 : AclMode result;
3326 : HeapTuple tuple;
3327 : Form_pg_class classForm;
3328 : Datum aclDatum;
3329 : bool isNull;
3330 : Acl *acl;
3331 : Oid ownerId;
3332 :
3333 : /*
3334 : * Must get the relation's tuple from pg_class
3335 : */
3336 2424740 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
3337 2424740 : if (!HeapTupleIsValid(tuple))
3338 : {
3339 8 : if (is_missing != NULL)
3340 : {
3341 : /* return "no privileges" instead of throwing an error */
3342 8 : *is_missing = true;
3343 8 : return 0;
3344 : }
3345 : else
3346 0 : ereport(ERROR,
3347 : (errcode(ERRCODE_UNDEFINED_TABLE),
3348 : errmsg("relation with OID %u does not exist",
3349 : table_oid)));
3350 : }
3351 :
3352 2424732 : classForm = (Form_pg_class) GETSTRUCT(tuple);
3353 :
3354 : /*
3355 : * Deny anyone permission to update a system catalog unless
3356 : * pg_authid.rolsuper is set.
3357 : *
3358 : * As of 7.4 we have some updatable system views; those shouldn't be
3359 : * protected in this way. Assume the view rules can take care of
3360 : * themselves. ACL_USAGE is if we ever have system sequences.
3361 : */
3362 3088570 : if ((mask & (ACL_INSERT | ACL_UPDATE | ACL_DELETE | ACL_TRUNCATE | ACL_USAGE)) &&
3363 663838 : IsSystemClass(table_oid, classForm) &&
3364 4544 : classForm->relkind != RELKIND_VIEW &&
3365 4544 : !superuser_arg(roleid))
3366 70 : mask &= ~(ACL_INSERT | ACL_UPDATE | ACL_DELETE | ACL_TRUNCATE | ACL_USAGE);
3367 :
3368 : /*
3369 : * Otherwise, superusers bypass all permission-checking.
3370 : */
3371 2424732 : if (superuser_arg(roleid))
3372 : {
3373 2392432 : ReleaseSysCache(tuple);
3374 2392432 : return mask;
3375 : }
3376 :
3377 : /*
3378 : * Normal case: get the relation's ACL from pg_class
3379 : */
3380 32300 : ownerId = classForm->relowner;
3381 :
3382 32300 : aclDatum = SysCacheGetAttr(RELOID, tuple, Anum_pg_class_relacl,
3383 : &isNull);
3384 32300 : if (isNull)
3385 : {
3386 : /* No ACL, so build default ACL */
3387 5846 : switch (classForm->relkind)
3388 : {
3389 36 : case RELKIND_SEQUENCE:
3390 36 : acl = acldefault(OBJECT_SEQUENCE, ownerId);
3391 36 : break;
3392 5810 : default:
3393 5810 : acl = acldefault(OBJECT_TABLE, ownerId);
3394 5810 : break;
3395 : }
3396 5846 : aclDatum = (Datum) 0;
3397 : }
3398 : else
3399 : {
3400 : /* detoast rel's ACL if necessary */
3401 26454 : acl = DatumGetAclP(aclDatum);
3402 : }
3403 :
3404 32300 : result = aclmask(acl, roleid, ownerId, mask, how);
3405 :
3406 : /* if we have a detoasted copy, free it */
3407 32300 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3408 32300 : pfree(acl);
3409 :
3410 32300 : ReleaseSysCache(tuple);
3411 :
3412 : /*
3413 : * Check if ACL_SELECT is being checked and, if so, and not set already as
3414 : * part of the result, then check if the user is a member of the
3415 : * pg_read_all_data role, which allows read access to all relations.
3416 : */
3417 34246 : if (mask & ACL_SELECT && !(result & ACL_SELECT) &&
3418 1946 : has_privs_of_role(roleid, ROLE_PG_READ_ALL_DATA))
3419 12 : result |= ACL_SELECT;
3420 :
3421 : /*
3422 : * Check if ACL_INSERT, ACL_UPDATE, or ACL_DELETE is being checked and, if
3423 : * so, and not set already as part of the result, then check if the user
3424 : * is a member of the pg_write_all_data role, which allows
3425 : * INSERT/UPDATE/DELETE access to all relations (except system catalogs,
3426 : * which requires superuser, see above).
3427 : */
3428 32300 : if (mask & (ACL_INSERT | ACL_UPDATE | ACL_DELETE) &&
3429 7268 : !(result & (ACL_INSERT | ACL_UPDATE | ACL_DELETE)) &&
3430 1674 : has_privs_of_role(roleid, ROLE_PG_WRITE_ALL_DATA))
3431 18 : result |= (mask & (ACL_INSERT | ACL_UPDATE | ACL_DELETE));
3432 :
3433 : /*
3434 : * Check if ACL_MAINTAIN is being checked and, if so, and not already set
3435 : * as part of the result, then check if the user is a member of the
3436 : * pg_maintain role, which allows VACUUM, ANALYZE, CLUSTER, REFRESH
3437 : * MATERIALIZED VIEW, and REINDEX on all relations.
3438 : */
3439 32300 : if (mask & ACL_MAINTAIN &&
3440 1878 : !(result & ACL_MAINTAIN) &&
3441 670 : has_privs_of_role(roleid, ROLE_PG_MAINTAIN))
3442 66 : result |= ACL_MAINTAIN;
3443 :
3444 32300 : return result;
3445 : }
3446 :
3447 : /*
3448 : * Routine for examining a user's privileges for a configuration
3449 : * parameter (GUC), identified by GUC name.
3450 : */
3451 : static AclMode
3452 160 : pg_parameter_aclmask(const char *name, Oid roleid, AclMode mask, AclMaskHow how)
3453 : {
3454 : AclMode result;
3455 : char *parname;
3456 : text *partext;
3457 : HeapTuple tuple;
3458 :
3459 : /* Superusers bypass all permission checking. */
3460 160 : if (superuser_arg(roleid))
3461 2 : return mask;
3462 :
3463 : /* Convert name to the form it should have in pg_parameter_acl... */
3464 158 : parname = convert_GUC_name_for_parameter_acl(name);
3465 158 : partext = cstring_to_text(parname);
3466 :
3467 : /* ... and look it up */
3468 158 : tuple = SearchSysCache1(PARAMETERACLNAME, PointerGetDatum(partext));
3469 :
3470 158 : if (!HeapTupleIsValid(tuple))
3471 : {
3472 : /* If no entry, GUC has no permissions for non-superusers */
3473 70 : result = ACL_NO_RIGHTS;
3474 : }
3475 : else
3476 : {
3477 : Datum aclDatum;
3478 : bool isNull;
3479 : Acl *acl;
3480 :
3481 88 : aclDatum = SysCacheGetAttr(PARAMETERACLNAME, tuple,
3482 : Anum_pg_parameter_acl_paracl,
3483 : &isNull);
3484 88 : if (isNull)
3485 : {
3486 : /* No ACL, so build default ACL */
3487 0 : acl = acldefault(OBJECT_PARAMETER_ACL, BOOTSTRAP_SUPERUSERID);
3488 0 : aclDatum = (Datum) 0;
3489 : }
3490 : else
3491 : {
3492 : /* detoast ACL if necessary */
3493 88 : acl = DatumGetAclP(aclDatum);
3494 : }
3495 :
3496 88 : result = aclmask(acl, roleid, BOOTSTRAP_SUPERUSERID, mask, how);
3497 :
3498 : /* if we have a detoasted copy, free it */
3499 88 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3500 88 : pfree(acl);
3501 :
3502 88 : ReleaseSysCache(tuple);
3503 : }
3504 :
3505 158 : pfree(parname);
3506 158 : pfree(partext);
3507 :
3508 158 : return result;
3509 : }
3510 :
3511 : /*
3512 : * Routine for examining a user's privileges for a configuration
3513 : * parameter (GUC), identified by the OID of its pg_parameter_acl entry.
3514 : */
3515 : static AclMode
3516 0 : pg_parameter_acl_aclmask(Oid acl_oid, Oid roleid, AclMode mask, AclMaskHow how)
3517 : {
3518 : AclMode result;
3519 : HeapTuple tuple;
3520 : Datum aclDatum;
3521 : bool isNull;
3522 : Acl *acl;
3523 :
3524 : /* Superusers bypass all permission checking. */
3525 0 : if (superuser_arg(roleid))
3526 0 : return mask;
3527 :
3528 : /* Get the ACL from pg_parameter_acl */
3529 0 : tuple = SearchSysCache1(PARAMETERACLOID, ObjectIdGetDatum(acl_oid));
3530 0 : if (!HeapTupleIsValid(tuple))
3531 0 : ereport(ERROR,
3532 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3533 : errmsg("parameter ACL with OID %u does not exist",
3534 : acl_oid)));
3535 :
3536 0 : aclDatum = SysCacheGetAttr(PARAMETERACLOID, tuple,
3537 : Anum_pg_parameter_acl_paracl,
3538 : &isNull);
3539 0 : if (isNull)
3540 : {
3541 : /* No ACL, so build default ACL */
3542 0 : acl = acldefault(OBJECT_PARAMETER_ACL, BOOTSTRAP_SUPERUSERID);
3543 0 : aclDatum = (Datum) 0;
3544 : }
3545 : else
3546 : {
3547 : /* detoast ACL if necessary */
3548 0 : acl = DatumGetAclP(aclDatum);
3549 : }
3550 :
3551 0 : result = aclmask(acl, roleid, BOOTSTRAP_SUPERUSERID, mask, how);
3552 :
3553 : /* if we have a detoasted copy, free it */
3554 0 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3555 0 : pfree(acl);
3556 :
3557 0 : ReleaseSysCache(tuple);
3558 :
3559 0 : return result;
3560 : }
3561 :
3562 : /*
3563 : * Routine for examining a user's privileges for a largeobject
3564 : *
3565 : * When a large object is opened for reading, it is opened relative to the
3566 : * caller's snapshot, but when it is opened for writing, a current
3567 : * MVCC snapshot will be used. See doc/src/sgml/lobj.sgml. This function
3568 : * takes a snapshot argument so that the permissions check can be made
3569 : * relative to the same snapshot that will be used to read the underlying
3570 : * data. The caller will actually pass NULL for an instantaneous MVCC
3571 : * snapshot, since all we do with the snapshot argument is pass it through
3572 : * to systable_beginscan().
3573 : */
3574 : static AclMode
3575 560 : pg_largeobject_aclmask_snapshot(Oid lobj_oid, Oid roleid,
3576 : AclMode mask, AclMaskHow how,
3577 : Snapshot snapshot)
3578 : {
3579 : AclMode result;
3580 : Relation pg_lo_meta;
3581 : ScanKeyData entry[1];
3582 : SysScanDesc scan;
3583 : HeapTuple tuple;
3584 : Datum aclDatum;
3585 : bool isNull;
3586 : Acl *acl;
3587 : Oid ownerId;
3588 :
3589 : /* Superusers bypass all permission checking. */
3590 560 : if (superuser_arg(roleid))
3591 410 : return mask;
3592 :
3593 : /*
3594 : * Get the largeobject's ACL from pg_largeobject_metadata
3595 : */
3596 150 : pg_lo_meta = table_open(LargeObjectMetadataRelationId,
3597 : AccessShareLock);
3598 :
3599 150 : ScanKeyInit(&entry[0],
3600 : Anum_pg_largeobject_metadata_oid,
3601 : BTEqualStrategyNumber, F_OIDEQ,
3602 : ObjectIdGetDatum(lobj_oid));
3603 :
3604 150 : scan = systable_beginscan(pg_lo_meta,
3605 : LargeObjectMetadataOidIndexId, true,
3606 : snapshot, 1, entry);
3607 :
3608 150 : tuple = systable_getnext(scan);
3609 150 : if (!HeapTupleIsValid(tuple))
3610 0 : ereport(ERROR,
3611 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3612 : errmsg("large object %u does not exist", lobj_oid)));
3613 :
3614 150 : ownerId = ((Form_pg_largeobject_metadata) GETSTRUCT(tuple))->lomowner;
3615 :
3616 150 : aclDatum = heap_getattr(tuple, Anum_pg_largeobject_metadata_lomacl,
3617 : RelationGetDescr(pg_lo_meta), &isNull);
3618 :
3619 150 : if (isNull)
3620 : {
3621 : /* No ACL, so build default ACL */
3622 36 : acl = acldefault(OBJECT_LARGEOBJECT, ownerId);
3623 36 : aclDatum = (Datum) 0;
3624 : }
3625 : else
3626 : {
3627 : /* detoast ACL if necessary */
3628 114 : acl = DatumGetAclP(aclDatum);
3629 : }
3630 :
3631 150 : result = aclmask(acl, roleid, ownerId, mask, how);
3632 :
3633 : /* if we have a detoasted copy, free it */
3634 150 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3635 150 : pfree(acl);
3636 :
3637 150 : systable_endscan(scan);
3638 :
3639 150 : table_close(pg_lo_meta, AccessShareLock);
3640 :
3641 150 : return result;
3642 : }
3643 :
3644 : /*
3645 : * Routine for examining a user's privileges for a namespace, with is_missing
3646 : */
3647 : static AclMode
3648 810128 : pg_namespace_aclmask_ext(Oid nsp_oid, Oid roleid,
3649 : AclMode mask, AclMaskHow how,
3650 : bool *is_missing)
3651 : {
3652 : AclMode result;
3653 : HeapTuple tuple;
3654 : Datum aclDatum;
3655 : bool isNull;
3656 : Acl *acl;
3657 : Oid ownerId;
3658 :
3659 : /* Superusers bypass all permission checking. */
3660 810128 : if (superuser_arg(roleid))
3661 794218 : return mask;
3662 :
3663 : /*
3664 : * If we have been assigned this namespace as a temp namespace, check to
3665 : * make sure we have CREATE TEMP permission on the database, and if so act
3666 : * as though we have all standard (but not GRANT OPTION) permissions on
3667 : * the namespace. If we don't have CREATE TEMP, act as though we have
3668 : * only USAGE (and not CREATE) rights.
3669 : *
3670 : * This may seem redundant given the check in InitTempTableNamespace, but
3671 : * it really isn't since current user ID may have changed since then. The
3672 : * upshot of this behavior is that a SECURITY DEFINER function can create
3673 : * temp tables that can then be accessed (if permission is granted) by
3674 : * code in the same session that doesn't have permissions to create temp
3675 : * tables.
3676 : *
3677 : * XXX Would it be safe to ereport a special error message as
3678 : * InitTempTableNamespace does? Returning zero here means we'll get a
3679 : * generic "permission denied for schema pg_temp_N" message, which is not
3680 : * remarkably user-friendly.
3681 : */
3682 15910 : if (isTempNamespace(nsp_oid))
3683 : {
3684 272 : if (object_aclcheck_ext(DatabaseRelationId, MyDatabaseId, roleid,
3685 : ACL_CREATE_TEMP, is_missing) == ACLCHECK_OK)
3686 272 : return mask & ACL_ALL_RIGHTS_SCHEMA;
3687 : else
3688 0 : return mask & ACL_USAGE;
3689 : }
3690 :
3691 : /*
3692 : * Get the schema's ACL from pg_namespace
3693 : */
3694 15638 : tuple = SearchSysCache1(NAMESPACEOID, ObjectIdGetDatum(nsp_oid));
3695 15638 : if (!HeapTupleIsValid(tuple))
3696 : {
3697 0 : if (is_missing != NULL)
3698 : {
3699 : /* return "no privileges" instead of throwing an error */
3700 0 : *is_missing = true;
3701 0 : return 0;
3702 : }
3703 : else
3704 0 : ereport(ERROR,
3705 : (errcode(ERRCODE_UNDEFINED_SCHEMA),
3706 : errmsg("schema with OID %u does not exist", nsp_oid)));
3707 : }
3708 :
3709 15638 : ownerId = ((Form_pg_namespace) GETSTRUCT(tuple))->nspowner;
3710 :
3711 15638 : aclDatum = SysCacheGetAttr(NAMESPACEOID, tuple, Anum_pg_namespace_nspacl,
3712 : &isNull);
3713 15638 : if (isNull)
3714 : {
3715 : /* No ACL, so build default ACL */
3716 288 : acl = acldefault(OBJECT_SCHEMA, ownerId);
3717 288 : aclDatum = (Datum) 0;
3718 : }
3719 : else
3720 : {
3721 : /* detoast ACL if necessary */
3722 15350 : acl = DatumGetAclP(aclDatum);
3723 : }
3724 :
3725 15638 : result = aclmask(acl, roleid, ownerId, mask, how);
3726 :
3727 : /* if we have a detoasted copy, free it */
3728 15638 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3729 15638 : pfree(acl);
3730 :
3731 15638 : ReleaseSysCache(tuple);
3732 :
3733 : /*
3734 : * Check if ACL_USAGE is being checked and, if so, and not set already as
3735 : * part of the result, then check if the user is a member of the
3736 : * pg_read_all_data or pg_write_all_data roles, which allow usage access
3737 : * to all schemas.
3738 : */
3739 15676 : if (mask & ACL_USAGE && !(result & ACL_USAGE) &&
3740 70 : (has_privs_of_role(roleid, ROLE_PG_READ_ALL_DATA) ||
3741 32 : has_privs_of_role(roleid, ROLE_PG_WRITE_ALL_DATA)))
3742 12 : result |= ACL_USAGE;
3743 15638 : return result;
3744 : }
3745 :
3746 : /*
3747 : * Routine for examining a user's privileges for a type, with is_missing
3748 : */
3749 : static AclMode
3750 290872 : pg_type_aclmask_ext(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how,
3751 : bool *is_missing)
3752 : {
3753 : AclMode result;
3754 : HeapTuple tuple;
3755 : Form_pg_type typeForm;
3756 : Datum aclDatum;
3757 : bool isNull;
3758 : Acl *acl;
3759 : Oid ownerId;
3760 :
3761 : /* Bypass permission checks for superusers */
3762 290872 : if (superuser_arg(roleid))
3763 286636 : return mask;
3764 :
3765 : /*
3766 : * Must get the type's tuple from pg_type
3767 : */
3768 4236 : tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(type_oid));
3769 4236 : if (!HeapTupleIsValid(tuple))
3770 : {
3771 0 : if (is_missing != NULL)
3772 : {
3773 : /* return "no privileges" instead of throwing an error */
3774 0 : *is_missing = true;
3775 0 : return 0;
3776 : }
3777 : else
3778 0 : ereport(ERROR,
3779 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3780 : errmsg("type with OID %u does not exist",
3781 : type_oid)));
3782 : }
3783 4236 : typeForm = (Form_pg_type) GETSTRUCT(tuple);
3784 :
3785 : /*
3786 : * "True" array types don't manage permissions of their own; consult the
3787 : * element type instead.
3788 : */
3789 4236 : if (IsTrueArrayType(typeForm))
3790 : {
3791 48 : Oid elttype_oid = typeForm->typelem;
3792 :
3793 48 : ReleaseSysCache(tuple);
3794 :
3795 48 : tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(elttype_oid));
3796 48 : if (!HeapTupleIsValid(tuple))
3797 : {
3798 0 : if (is_missing != NULL)
3799 : {
3800 : /* return "no privileges" instead of throwing an error */
3801 0 : *is_missing = true;
3802 0 : return 0;
3803 : }
3804 : else
3805 0 : ereport(ERROR,
3806 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3807 : errmsg("type with OID %u does not exist",
3808 : elttype_oid)));
3809 : }
3810 48 : typeForm = (Form_pg_type) GETSTRUCT(tuple);
3811 : }
3812 :
3813 : /*
3814 : * Likewise, multirange types don't manage their own permissions; consult
3815 : * the associated range type. (Note we must do this after the array step
3816 : * to get the right answer for arrays of multiranges.)
3817 : */
3818 4236 : if (typeForm->typtype == TYPTYPE_MULTIRANGE)
3819 : {
3820 12 : Oid rangetype = get_multirange_range(typeForm->oid);
3821 :
3822 12 : ReleaseSysCache(tuple);
3823 :
3824 12 : tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(rangetype));
3825 12 : if (!HeapTupleIsValid(tuple))
3826 : {
3827 0 : if (is_missing != NULL)
3828 : {
3829 : /* return "no privileges" instead of throwing an error */
3830 0 : *is_missing = true;
3831 0 : return 0;
3832 : }
3833 : else
3834 0 : ereport(ERROR,
3835 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3836 : errmsg("type with OID %u does not exist",
3837 : rangetype)));
3838 : }
3839 12 : typeForm = (Form_pg_type) GETSTRUCT(tuple);
3840 : }
3841 :
3842 : /*
3843 : * Now get the type's owner and ACL from the tuple
3844 : */
3845 4236 : ownerId = typeForm->typowner;
3846 :
3847 4236 : aclDatum = SysCacheGetAttr(TYPEOID, tuple,
3848 : Anum_pg_type_typacl, &isNull);
3849 4236 : if (isNull)
3850 : {
3851 : /* No ACL, so build default ACL */
3852 4002 : acl = acldefault(OBJECT_TYPE, ownerId);
3853 4002 : aclDatum = (Datum) 0;
3854 : }
3855 : else
3856 : {
3857 : /* detoast rel's ACL if necessary */
3858 234 : acl = DatumGetAclP(aclDatum);
3859 : }
3860 :
3861 4236 : result = aclmask(acl, roleid, ownerId, mask, how);
3862 :
3863 : /* if we have a detoasted copy, free it */
3864 4236 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3865 4236 : pfree(acl);
3866 :
3867 4236 : ReleaseSysCache(tuple);
3868 :
3869 4236 : return result;
3870 : }
3871 :
3872 : /*
3873 : * Exported generic routine for checking a user's access privileges to an object
3874 : */
3875 : AclResult
3876 2886688 : object_aclcheck(Oid classid, Oid objectid, Oid roleid, AclMode mode)
3877 : {
3878 2886688 : return object_aclcheck_ext(classid, objectid, roleid, mode, NULL);
3879 : }
3880 :
3881 : /*
3882 : * Exported generic routine for checking a user's access privileges to an
3883 : * object, with is_missing
3884 : */
3885 : AclResult
3886 2887068 : object_aclcheck_ext(Oid classid, Oid objectid,
3887 : Oid roleid, AclMode mode,
3888 : bool *is_missing)
3889 : {
3890 2887068 : if (object_aclmask_ext(classid, objectid, roleid, mode, ACLMASK_ANY,
3891 : is_missing) != 0)
3892 2886524 : return ACLCHECK_OK;
3893 : else
3894 544 : return ACLCHECK_NO_PRIV;
3895 : }
3896 :
3897 : /*
3898 : * Exported routine for checking a user's access privileges to a column
3899 : *
3900 : * Returns ACLCHECK_OK if the user has any of the privileges identified by
3901 : * 'mode'; otherwise returns a suitable error code (in practice, always
3902 : * ACLCHECK_NO_PRIV).
3903 : *
3904 : * As with pg_attribute_aclmask, only privileges granted directly on the
3905 : * column are considered here.
3906 : */
3907 : AclResult
3908 3538 : pg_attribute_aclcheck(Oid table_oid, AttrNumber attnum,
3909 : Oid roleid, AclMode mode)
3910 : {
3911 3538 : return pg_attribute_aclcheck_ext(table_oid, attnum, roleid, mode, NULL);
3912 : }
3913 :
3914 :
3915 : /*
3916 : * Exported routine for checking a user's access privileges to a column,
3917 : * with is_missing
3918 : */
3919 : AclResult
3920 5362 : pg_attribute_aclcheck_ext(Oid table_oid, AttrNumber attnum,
3921 : Oid roleid, AclMode mode, bool *is_missing)
3922 : {
3923 5362 : if (pg_attribute_aclmask_ext(table_oid, attnum, roleid, mode,
3924 : ACLMASK_ANY, is_missing) != 0)
3925 1960 : return ACLCHECK_OK;
3926 : else
3927 3402 : return ACLCHECK_NO_PRIV;
3928 : }
3929 :
3930 : /*
3931 : * Exported routine for checking a user's access privileges to any/all columns
3932 : *
3933 : * If 'how' is ACLMASK_ANY, then returns ACLCHECK_OK if user has any of the
3934 : * privileges identified by 'mode' on any non-dropped column in the relation;
3935 : * otherwise returns a suitable error code (in practice, always
3936 : * ACLCHECK_NO_PRIV).
3937 : *
3938 : * If 'how' is ACLMASK_ALL, then returns ACLCHECK_OK if user has any of the
3939 : * privileges identified by 'mode' on each non-dropped column in the relation
3940 : * (and there must be at least one such column); otherwise returns a suitable
3941 : * error code (in practice, always ACLCHECK_NO_PRIV).
3942 : *
3943 : * As with pg_attribute_aclmask, only privileges granted directly on the
3944 : * column(s) are considered here.
3945 : *
3946 : * Note: system columns are not considered here; there are cases where that
3947 : * might be appropriate but there are also cases where it wouldn't.
3948 : */
3949 : AclResult
3950 162 : pg_attribute_aclcheck_all(Oid table_oid, Oid roleid, AclMode mode,
3951 : AclMaskHow how)
3952 : {
3953 162 : return pg_attribute_aclcheck_all_ext(table_oid, roleid, mode, how, NULL);
3954 : }
3955 :
3956 : /*
3957 : * Exported routine for checking a user's access privileges to any/all columns,
3958 : * with is_missing
3959 : */
3960 : AclResult
3961 162 : pg_attribute_aclcheck_all_ext(Oid table_oid, Oid roleid,
3962 : AclMode mode, AclMaskHow how,
3963 : bool *is_missing)
3964 : {
3965 : AclResult result;
3966 : HeapTuple classTuple;
3967 : Form_pg_class classForm;
3968 : Oid ownerId;
3969 : AttrNumber nattrs;
3970 : AttrNumber curr_att;
3971 :
3972 : /*
3973 : * Must fetch pg_class row to get owner ID and number of attributes.
3974 : */
3975 162 : classTuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
3976 162 : if (!HeapTupleIsValid(classTuple))
3977 : {
3978 0 : if (is_missing != NULL)
3979 : {
3980 : /* return "no privileges" instead of throwing an error */
3981 0 : *is_missing = true;
3982 0 : return ACLCHECK_NO_PRIV;
3983 : }
3984 : else
3985 0 : ereport(ERROR,
3986 : (errcode(ERRCODE_UNDEFINED_TABLE),
3987 : errmsg("relation with OID %u does not exist",
3988 : table_oid)));
3989 : }
3990 162 : classForm = (Form_pg_class) GETSTRUCT(classTuple);
3991 :
3992 162 : ownerId = classForm->relowner;
3993 162 : nattrs = classForm->relnatts;
3994 :
3995 162 : ReleaseSysCache(classTuple);
3996 :
3997 : /*
3998 : * Initialize result in case there are no non-dropped columns. We want to
3999 : * report failure in such cases for either value of 'how'.
4000 : */
4001 162 : result = ACLCHECK_NO_PRIV;
4002 :
4003 414 : for (curr_att = 1; curr_att <= nattrs; curr_att++)
4004 : {
4005 : HeapTuple attTuple;
4006 : Datum aclDatum;
4007 : bool isNull;
4008 : Acl *acl;
4009 : AclMode attmask;
4010 :
4011 330 : attTuple = SearchSysCache2(ATTNUM,
4012 : ObjectIdGetDatum(table_oid),
4013 : Int16GetDatum(curr_att));
4014 :
4015 : /*
4016 : * Lookup failure probably indicates that the table was just dropped,
4017 : * but we'll treat it the same as a dropped column rather than
4018 : * throwing error.
4019 : */
4020 330 : if (!HeapTupleIsValid(attTuple))
4021 18 : continue;
4022 :
4023 : /* ignore dropped columns */
4024 330 : if (((Form_pg_attribute) GETSTRUCT(attTuple))->attisdropped)
4025 : {
4026 18 : ReleaseSysCache(attTuple);
4027 18 : continue;
4028 : }
4029 :
4030 312 : aclDatum = SysCacheGetAttr(ATTNUM, attTuple, Anum_pg_attribute_attacl,
4031 : &isNull);
4032 :
4033 : /*
4034 : * Here we hard-wire knowledge that the default ACL for a column
4035 : * grants no privileges, so that we can fall out quickly in the very
4036 : * common case where attacl is null.
4037 : */
4038 312 : if (isNull)
4039 156 : attmask = 0;
4040 : else
4041 : {
4042 : /* detoast column's ACL if necessary */
4043 156 : acl = DatumGetAclP(aclDatum);
4044 :
4045 156 : attmask = aclmask(acl, roleid, ownerId, mode, ACLMASK_ANY);
4046 :
4047 : /* if we have a detoasted copy, free it */
4048 156 : if ((Pointer) acl != DatumGetPointer(aclDatum))
4049 156 : pfree(acl);
4050 : }
4051 :
4052 312 : ReleaseSysCache(attTuple);
4053 :
4054 312 : if (attmask != 0)
4055 : {
4056 138 : result = ACLCHECK_OK;
4057 138 : if (how == ACLMASK_ANY)
4058 78 : break; /* succeed on any success */
4059 : }
4060 : else
4061 : {
4062 174 : result = ACLCHECK_NO_PRIV;
4063 174 : if (how == ACLMASK_ALL)
4064 36 : break; /* fail on any failure */
4065 : }
4066 : }
4067 :
4068 162 : return result;
4069 : }
4070 :
4071 : /*
4072 : * Exported routine for checking a user's access privileges to a table
4073 : *
4074 : * Returns ACLCHECK_OK if the user has any of the privileges identified by
4075 : * 'mode'; otherwise returns a suitable error code (in practice, always
4076 : * ACLCHECK_NO_PRIV).
4077 : */
4078 : AclResult
4079 1915872 : pg_class_aclcheck(Oid table_oid, Oid roleid, AclMode mode)
4080 : {
4081 1915872 : return pg_class_aclcheck_ext(table_oid, roleid, mode, NULL);
4082 : }
4083 :
4084 : /*
4085 : * Exported routine for checking a user's access privileges to a table,
4086 : * with is_missing
4087 : */
4088 : AclResult
4089 1917932 : pg_class_aclcheck_ext(Oid table_oid, Oid roleid,
4090 : AclMode mode, bool *is_missing)
4091 : {
4092 1917932 : if (pg_class_aclmask_ext(table_oid, roleid, mode,
4093 : ACLMASK_ANY, is_missing) != 0)
4094 1916782 : return ACLCHECK_OK;
4095 : else
4096 1150 : return ACLCHECK_NO_PRIV;
4097 : }
4098 :
4099 : /*
4100 : * Exported routine for checking a user's access privileges to a configuration
4101 : * parameter (GUC), identified by GUC name.
4102 : */
4103 : AclResult
4104 160 : pg_parameter_aclcheck(const char *name, Oid roleid, AclMode mode)
4105 : {
4106 160 : if (pg_parameter_aclmask(name, roleid, mode, ACLMASK_ANY) != 0)
4107 68 : return ACLCHECK_OK;
4108 : else
4109 92 : return ACLCHECK_NO_PRIV;
4110 : }
4111 :
4112 : /*
4113 : * Exported routine for checking a user's access privileges to a largeobject
4114 : */
4115 : AclResult
4116 560 : pg_largeobject_aclcheck_snapshot(Oid lobj_oid, Oid roleid, AclMode mode,
4117 : Snapshot snapshot)
4118 : {
4119 560 : if (pg_largeobject_aclmask_snapshot(lobj_oid, roleid, mode,
4120 : ACLMASK_ANY, snapshot) != 0)
4121 506 : return ACLCHECK_OK;
4122 : else
4123 54 : return ACLCHECK_NO_PRIV;
4124 : }
4125 :
4126 : /*
4127 : * Generic ownership check for an object
4128 : */
4129 : bool
4130 232370 : object_ownercheck(Oid classid, Oid objectid, Oid roleid)
4131 : {
4132 : int cacheid;
4133 : Oid ownerId;
4134 :
4135 : /* Superusers bypass all permission checking. */
4136 232370 : if (superuser_arg(roleid))
4137 224544 : return true;
4138 :
4139 : /* For large objects, the catalog to consult is pg_largeobject_metadata */
4140 7826 : if (classid == LargeObjectRelationId)
4141 24 : classid = LargeObjectMetadataRelationId;
4142 :
4143 7826 : cacheid = get_object_catcache_oid(classid);
4144 7826 : if (cacheid != -1)
4145 : {
4146 : /* we can get the object's tuple from the syscache */
4147 : HeapTuple tuple;
4148 :
4149 7798 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
4150 7798 : if (!HeapTupleIsValid(tuple))
4151 0 : ereport(ERROR,
4152 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4153 : errmsg("%s with OID %u does not exist", get_object_class_descr(classid), objectid)));
4154 :
4155 7798 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
4156 : tuple,
4157 7798 : get_object_attnum_owner(classid)));
4158 7798 : ReleaseSysCache(tuple);
4159 : }
4160 : else
4161 : {
4162 : /* for catalogs without an appropriate syscache */
4163 : Relation rel;
4164 : ScanKeyData entry[1];
4165 : SysScanDesc scan;
4166 : HeapTuple tuple;
4167 : bool isnull;
4168 :
4169 28 : rel = table_open(classid, AccessShareLock);
4170 :
4171 56 : ScanKeyInit(&entry[0],
4172 28 : get_object_attnum_oid(classid),
4173 : BTEqualStrategyNumber, F_OIDEQ,
4174 : ObjectIdGetDatum(objectid));
4175 :
4176 28 : scan = systable_beginscan(rel,
4177 : get_object_oid_index(classid), true,
4178 : NULL, 1, entry);
4179 :
4180 28 : tuple = systable_getnext(scan);
4181 28 : if (!HeapTupleIsValid(tuple))
4182 0 : ereport(ERROR,
4183 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4184 : errmsg("%s with OID %u does not exist", get_object_class_descr(classid), objectid)));
4185 :
4186 28 : ownerId = DatumGetObjectId(heap_getattr(tuple,
4187 28 : get_object_attnum_owner(classid),
4188 : RelationGetDescr(rel),
4189 : &isnull));
4190 : Assert(!isnull);
4191 :
4192 28 : systable_endscan(scan);
4193 28 : table_close(rel, AccessShareLock);
4194 : }
4195 :
4196 7826 : return has_privs_of_role(roleid, ownerId);
4197 : }
4198 :
4199 : /*
4200 : * Check whether specified role has CREATEROLE privilege (or is a superuser)
4201 : *
4202 : * Note: roles do not have owners per se; instead we use this test in
4203 : * places where an ownership-like permissions test is needed for a role.
4204 : * Be sure to apply it to the role trying to do the operation, not the
4205 : * role being operated on! Also note that this generally should not be
4206 : * considered enough privilege if the target role is a superuser.
4207 : * (We don't handle that consideration here because we want to give a
4208 : * separate error message for such cases, so the caller has to deal with it.)
4209 : */
4210 : bool
4211 2340 : has_createrole_privilege(Oid roleid)
4212 : {
4213 2340 : bool result = false;
4214 : HeapTuple utup;
4215 :
4216 : /* Superusers bypass all permission checking. */
4217 2340 : if (superuser_arg(roleid))
4218 1822 : return true;
4219 :
4220 518 : utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
4221 518 : if (HeapTupleIsValid(utup))
4222 : {
4223 518 : result = ((Form_pg_authid) GETSTRUCT(utup))->rolcreaterole;
4224 518 : ReleaseSysCache(utup);
4225 : }
4226 518 : return result;
4227 : }
4228 :
4229 : bool
4230 4484 : has_bypassrls_privilege(Oid roleid)
4231 : {
4232 4484 : bool result = false;
4233 : HeapTuple utup;
4234 :
4235 : /* Superusers bypass all permission checking. */
4236 4484 : if (superuser_arg(roleid))
4237 1378 : return true;
4238 :
4239 3106 : utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
4240 3106 : if (HeapTupleIsValid(utup))
4241 : {
4242 3106 : result = ((Form_pg_authid) GETSTRUCT(utup))->rolbypassrls;
4243 3106 : ReleaseSysCache(utup);
4244 : }
4245 3106 : return result;
4246 : }
4247 :
4248 : /*
4249 : * Fetch pg_default_acl entry for given role, namespace and object type
4250 : * (object type must be given in pg_default_acl's encoding).
4251 : * Returns NULL if no such entry.
4252 : */
4253 : static Acl *
4254 140448 : get_default_acl_internal(Oid roleId, Oid nsp_oid, char objtype)
4255 : {
4256 140448 : Acl *result = NULL;
4257 : HeapTuple tuple;
4258 :
4259 140448 : tuple = SearchSysCache3(DEFACLROLENSPOBJ,
4260 : ObjectIdGetDatum(roleId),
4261 : ObjectIdGetDatum(nsp_oid),
4262 : CharGetDatum(objtype));
4263 :
4264 140448 : if (HeapTupleIsValid(tuple))
4265 : {
4266 : Datum aclDatum;
4267 : bool isNull;
4268 :
4269 228 : aclDatum = SysCacheGetAttr(DEFACLROLENSPOBJ, tuple,
4270 : Anum_pg_default_acl_defaclacl,
4271 : &isNull);
4272 228 : if (!isNull)
4273 228 : result = DatumGetAclPCopy(aclDatum);
4274 228 : ReleaseSysCache(tuple);
4275 : }
4276 :
4277 140448 : return result;
4278 : }
4279 :
4280 : /*
4281 : * Get default permissions for newly created object within given schema
4282 : *
4283 : * Returns NULL if built-in system defaults should be used.
4284 : *
4285 : * If the result is not NULL, caller must call recordDependencyOnNewAcl
4286 : * once the OID of the new object is known.
4287 : */
4288 : Acl *
4289 70224 : get_user_default_acl(ObjectType objtype, Oid ownerId, Oid nsp_oid)
4290 : {
4291 : Acl *result;
4292 : Acl *glob_acl;
4293 : Acl *schema_acl;
4294 : Acl *def_acl;
4295 : char defaclobjtype;
4296 :
4297 : /*
4298 : * Use NULL during bootstrap, since pg_default_acl probably isn't there
4299 : * yet.
4300 : */
4301 70224 : if (IsBootstrapProcessingMode())
4302 0 : return NULL;
4303 :
4304 : /* Check if object type is supported in pg_default_acl */
4305 70224 : switch (objtype)
4306 : {
4307 50410 : case OBJECT_TABLE:
4308 50410 : defaclobjtype = DEFACLOBJ_RELATION;
4309 50410 : break;
4310 :
4311 1684 : case OBJECT_SEQUENCE:
4312 1684 : defaclobjtype = DEFACLOBJ_SEQUENCE;
4313 1684 : break;
4314 :
4315 14610 : case OBJECT_FUNCTION:
4316 14610 : defaclobjtype = DEFACLOBJ_FUNCTION;
4317 14610 : break;
4318 :
4319 2596 : case OBJECT_TYPE:
4320 2596 : defaclobjtype = DEFACLOBJ_TYPE;
4321 2596 : break;
4322 :
4323 924 : case OBJECT_SCHEMA:
4324 924 : defaclobjtype = DEFACLOBJ_NAMESPACE;
4325 924 : break;
4326 :
4327 0 : default:
4328 0 : return NULL;
4329 : }
4330 :
4331 : /* Look up the relevant pg_default_acl entries */
4332 70224 : glob_acl = get_default_acl_internal(ownerId, InvalidOid, defaclobjtype);
4333 70224 : schema_acl = get_default_acl_internal(ownerId, nsp_oid, defaclobjtype);
4334 :
4335 : /* Quick out if neither entry exists */
4336 70224 : if (glob_acl == NULL && schema_acl == NULL)
4337 70032 : return NULL;
4338 :
4339 : /* We need to know the hard-wired default value, too */
4340 192 : def_acl = acldefault(objtype, ownerId);
4341 :
4342 : /* If there's no global entry, substitute the hard-wired default */
4343 192 : if (glob_acl == NULL)
4344 18 : glob_acl = def_acl;
4345 :
4346 : /* Merge in any per-schema privileges */
4347 192 : result = aclmerge(glob_acl, schema_acl, ownerId);
4348 :
4349 : /*
4350 : * For efficiency, we want to return NULL if the result equals default.
4351 : * This requires sorting both arrays to get an accurate comparison.
4352 : */
4353 192 : aclitemsort(result);
4354 192 : aclitemsort(def_acl);
4355 192 : if (aclequal(result, def_acl))
4356 24 : result = NULL;
4357 :
4358 192 : return result;
4359 : }
4360 :
4361 : /*
4362 : * Record dependencies on roles mentioned in a new object's ACL.
4363 : */
4364 : void
4365 72922 : recordDependencyOnNewAcl(Oid classId, Oid objectId, int32 objsubId,
4366 : Oid ownerId, Acl *acl)
4367 : {
4368 : int nmembers;
4369 : Oid *members;
4370 :
4371 : /* Nothing to do if ACL is defaulted */
4372 72922 : if (acl == NULL)
4373 72754 : return;
4374 :
4375 : /* Extract roles mentioned in ACL */
4376 168 : nmembers = aclmembers(acl, &members);
4377 :
4378 : /* Update the shared dependency ACL info */
4379 168 : updateAclDependencies(classId, objectId, objsubId,
4380 : ownerId,
4381 : 0, NULL,
4382 : nmembers, members);
4383 : }
4384 :
4385 : /*
4386 : * Record initial privileges for the top-level object passed in.
4387 : *
4388 : * For the object passed in, this will record its ACL (if any) and the ACLs of
4389 : * any sub-objects (eg: columns) into pg_init_privs.
4390 : */
4391 : void
4392 96 : recordExtObjInitPriv(Oid objoid, Oid classoid)
4393 : {
4394 : /*
4395 : * pg_class / pg_attribute
4396 : *
4397 : * If this is a relation then we need to see if there are any sub-objects
4398 : * (eg: columns) for it and, if so, be sure to call
4399 : * recordExtensionInitPrivWorker() for each one.
4400 : */
4401 96 : if (classoid == RelationRelationId)
4402 : {
4403 : Form_pg_class pg_class_tuple;
4404 : Datum aclDatum;
4405 : bool isNull;
4406 : HeapTuple tuple;
4407 :
4408 16 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(objoid));
4409 16 : if (!HeapTupleIsValid(tuple))
4410 0 : elog(ERROR, "cache lookup failed for relation %u", objoid);
4411 16 : pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
4412 :
4413 : /*
4414 : * Indexes don't have permissions, neither do the pg_class rows for
4415 : * composite types. (These cases are unreachable given the
4416 : * restrictions in ALTER EXTENSION ADD, but let's check anyway.)
4417 : */
4418 16 : if (pg_class_tuple->relkind == RELKIND_INDEX ||
4419 16 : pg_class_tuple->relkind == RELKIND_PARTITIONED_INDEX ||
4420 16 : pg_class_tuple->relkind == RELKIND_COMPOSITE_TYPE)
4421 : {
4422 0 : ReleaseSysCache(tuple);
4423 0 : return;
4424 : }
4425 :
4426 : /*
4427 : * If this isn't a sequence then it's possibly going to have
4428 : * column-level ACLs associated with it.
4429 : */
4430 16 : if (pg_class_tuple->relkind != RELKIND_SEQUENCE)
4431 : {
4432 : AttrNumber curr_att;
4433 14 : AttrNumber nattrs = pg_class_tuple->relnatts;
4434 :
4435 38 : for (curr_att = 1; curr_att <= nattrs; curr_att++)
4436 : {
4437 : HeapTuple attTuple;
4438 : Datum attaclDatum;
4439 :
4440 24 : attTuple = SearchSysCache2(ATTNUM,
4441 : ObjectIdGetDatum(objoid),
4442 : Int16GetDatum(curr_att));
4443 :
4444 24 : if (!HeapTupleIsValid(attTuple))
4445 0 : continue;
4446 :
4447 : /* ignore dropped columns */
4448 24 : if (((Form_pg_attribute) GETSTRUCT(attTuple))->attisdropped)
4449 : {
4450 2 : ReleaseSysCache(attTuple);
4451 2 : continue;
4452 : }
4453 :
4454 22 : attaclDatum = SysCacheGetAttr(ATTNUM, attTuple,
4455 : Anum_pg_attribute_attacl,
4456 : &isNull);
4457 :
4458 : /* no need to do anything for a NULL ACL */
4459 22 : if (isNull)
4460 : {
4461 18 : ReleaseSysCache(attTuple);
4462 18 : continue;
4463 : }
4464 :
4465 4 : recordExtensionInitPrivWorker(objoid, classoid, curr_att,
4466 4 : DatumGetAclP(attaclDatum));
4467 :
4468 4 : ReleaseSysCache(attTuple);
4469 : }
4470 : }
4471 :
4472 16 : aclDatum = SysCacheGetAttr(RELOID, tuple, Anum_pg_class_relacl,
4473 : &isNull);
4474 :
4475 : /* Add the record, if any, for the top-level object */
4476 16 : if (!isNull)
4477 8 : recordExtensionInitPrivWorker(objoid, classoid, 0,
4478 8 : DatumGetAclP(aclDatum));
4479 :
4480 16 : ReleaseSysCache(tuple);
4481 : }
4482 80 : else if (classoid == LargeObjectRelationId)
4483 : {
4484 : /* For large objects, we must consult pg_largeobject_metadata */
4485 : Datum aclDatum;
4486 : bool isNull;
4487 : HeapTuple tuple;
4488 : ScanKeyData entry[1];
4489 : SysScanDesc scan;
4490 : Relation relation;
4491 :
4492 : /*
4493 : * Note: this is dead code, given that we don't allow large objects to
4494 : * be made extension members. But it seems worth carrying in case
4495 : * some future caller of this function has need for it.
4496 : */
4497 0 : relation = table_open(LargeObjectMetadataRelationId, RowExclusiveLock);
4498 :
4499 : /* There's no syscache for pg_largeobject_metadata */
4500 0 : ScanKeyInit(&entry[0],
4501 : Anum_pg_largeobject_metadata_oid,
4502 : BTEqualStrategyNumber, F_OIDEQ,
4503 : ObjectIdGetDatum(objoid));
4504 :
4505 0 : scan = systable_beginscan(relation,
4506 : LargeObjectMetadataOidIndexId, true,
4507 : NULL, 1, entry);
4508 :
4509 0 : tuple = systable_getnext(scan);
4510 0 : if (!HeapTupleIsValid(tuple))
4511 0 : elog(ERROR, "could not find tuple for large object %u", objoid);
4512 :
4513 0 : aclDatum = heap_getattr(tuple,
4514 : Anum_pg_largeobject_metadata_lomacl,
4515 : RelationGetDescr(relation), &isNull);
4516 :
4517 : /* Add the record, if any, for the top-level object */
4518 0 : if (!isNull)
4519 0 : recordExtensionInitPrivWorker(objoid, classoid, 0,
4520 0 : DatumGetAclP(aclDatum));
4521 :
4522 0 : systable_endscan(scan);
4523 : }
4524 : /* This will error on unsupported classoid. */
4525 80 : else if (get_object_attnum_acl(classoid) != InvalidAttrNumber)
4526 : {
4527 : Datum aclDatum;
4528 : bool isNull;
4529 : HeapTuple tuple;
4530 :
4531 58 : tuple = SearchSysCache1(get_object_catcache_oid(classoid),
4532 : ObjectIdGetDatum(objoid));
4533 58 : if (!HeapTupleIsValid(tuple))
4534 0 : elog(ERROR, "cache lookup failed for %s %u",
4535 : get_object_class_descr(classoid), objoid);
4536 :
4537 58 : aclDatum = SysCacheGetAttr(get_object_catcache_oid(classoid), tuple,
4538 58 : get_object_attnum_acl(classoid),
4539 : &isNull);
4540 :
4541 : /* Add the record, if any, for the top-level object */
4542 58 : if (!isNull)
4543 10 : recordExtensionInitPrivWorker(objoid, classoid, 0,
4544 10 : DatumGetAclP(aclDatum));
4545 :
4546 58 : ReleaseSysCache(tuple);
4547 : }
4548 : }
4549 :
4550 : /*
4551 : * For the object passed in, remove its ACL and the ACLs of any object subIds
4552 : * from pg_init_privs (via recordExtensionInitPrivWorker()).
4553 : */
4554 : void
4555 226 : removeExtObjInitPriv(Oid objoid, Oid classoid)
4556 : {
4557 : /*
4558 : * If this is a relation then we need to see if there are any sub-objects
4559 : * (eg: columns) for it and, if so, be sure to call
4560 : * recordExtensionInitPrivWorker() for each one.
4561 : */
4562 226 : if (classoid == RelationRelationId)
4563 : {
4564 : Form_pg_class pg_class_tuple;
4565 : HeapTuple tuple;
4566 :
4567 40 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(objoid));
4568 40 : if (!HeapTupleIsValid(tuple))
4569 0 : elog(ERROR, "cache lookup failed for relation %u", objoid);
4570 40 : pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
4571 :
4572 : /*
4573 : * Indexes don't have permissions, neither do the pg_class rows for
4574 : * composite types. (These cases are unreachable given the
4575 : * restrictions in ALTER EXTENSION DROP, but let's check anyway.)
4576 : */
4577 40 : if (pg_class_tuple->relkind == RELKIND_INDEX ||
4578 40 : pg_class_tuple->relkind == RELKIND_PARTITIONED_INDEX ||
4579 40 : pg_class_tuple->relkind == RELKIND_COMPOSITE_TYPE)
4580 : {
4581 0 : ReleaseSysCache(tuple);
4582 0 : return;
4583 : }
4584 :
4585 : /*
4586 : * If this isn't a sequence then it's possibly going to have
4587 : * column-level ACLs associated with it.
4588 : */
4589 40 : if (pg_class_tuple->relkind != RELKIND_SEQUENCE)
4590 : {
4591 : AttrNumber curr_att;
4592 40 : AttrNumber nattrs = pg_class_tuple->relnatts;
4593 :
4594 938 : for (curr_att = 1; curr_att <= nattrs; curr_att++)
4595 : {
4596 : HeapTuple attTuple;
4597 :
4598 898 : attTuple = SearchSysCache2(ATTNUM,
4599 : ObjectIdGetDatum(objoid),
4600 : Int16GetDatum(curr_att));
4601 :
4602 898 : if (!HeapTupleIsValid(attTuple))
4603 0 : continue;
4604 :
4605 : /* when removing, remove all entries, even dropped columns */
4606 :
4607 898 : recordExtensionInitPrivWorker(objoid, classoid, curr_att, NULL);
4608 :
4609 898 : ReleaseSysCache(attTuple);
4610 : }
4611 : }
4612 :
4613 40 : ReleaseSysCache(tuple);
4614 : }
4615 :
4616 : /* Remove the record, if any, for the top-level object */
4617 226 : recordExtensionInitPrivWorker(objoid, classoid, 0, NULL);
4618 : }
4619 :
4620 : /*
4621 : * Record initial ACL for an extension object
4622 : *
4623 : * Can be called at any time, we check if 'creating_extension' is set and, if
4624 : * not, exit immediately.
4625 : *
4626 : * Pass in the object OID, the OID of the class (the OID of the table which
4627 : * the object is defined in) and the 'sub' id of the object (objsubid), if
4628 : * any. If there is no 'sub' id (they are currently only used for columns of
4629 : * tables) then pass in '0'. Finally, pass in the complete ACL to store.
4630 : *
4631 : * If an ACL already exists for this object/sub-object then we will replace
4632 : * it with what is passed in.
4633 : *
4634 : * Passing in NULL for 'new_acl' will result in the entry for the object being
4635 : * removed, if one is found.
4636 : */
4637 : static void
4638 17320 : recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid, Acl *new_acl)
4639 : {
4640 : /*
4641 : * Generally, we only record the initial privileges when an extension is
4642 : * being created, but because we don't actually use CREATE EXTENSION
4643 : * during binary upgrades with pg_upgrade, there is a variable to let us
4644 : * know that the GRANT and REVOKE statements being issued, while this
4645 : * variable is true, are for the initial privileges of the extension
4646 : * object and therefore we need to record them.
4647 : */
4648 17320 : if (!creating_extension && !binary_upgrade_record_init_privs)
4649 16694 : return;
4650 :
4651 626 : recordExtensionInitPrivWorker(objoid, classoid, objsubid, new_acl);
4652 : }
4653 :
4654 : /*
4655 : * Record initial ACL for an extension object, worker.
4656 : *
4657 : * This will perform a wholesale replacement of the entire ACL for the object
4658 : * passed in, therefore be sure to pass in the complete new ACL to use.
4659 : *
4660 : * Generally speaking, do *not* use this function directly but instead use
4661 : * recordExtensionInitPriv(), which checks if 'creating_extension' is set.
4662 : * This function does *not* check if 'creating_extension' is set as it is also
4663 : * used when an object is added to or removed from an extension via ALTER
4664 : * EXTENSION ... ADD/DROP.
4665 : */
4666 : static void
4667 1772 : recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid, Acl *new_acl)
4668 : {
4669 : Relation relation;
4670 : ScanKeyData key[3];
4671 : SysScanDesc scan;
4672 : HeapTuple tuple;
4673 : HeapTuple oldtuple;
4674 :
4675 1772 : relation = table_open(InitPrivsRelationId, RowExclusiveLock);
4676 :
4677 1772 : ScanKeyInit(&key[0],
4678 : Anum_pg_init_privs_objoid,
4679 : BTEqualStrategyNumber, F_OIDEQ,
4680 : ObjectIdGetDatum(objoid));
4681 1772 : ScanKeyInit(&key[1],
4682 : Anum_pg_init_privs_classoid,
4683 : BTEqualStrategyNumber, F_OIDEQ,
4684 : ObjectIdGetDatum(classoid));
4685 1772 : ScanKeyInit(&key[2],
4686 : Anum_pg_init_privs_objsubid,
4687 : BTEqualStrategyNumber, F_INT4EQ,
4688 : Int32GetDatum(objsubid));
4689 :
4690 1772 : scan = systable_beginscan(relation, InitPrivsObjIndexId, true,
4691 : NULL, 3, key);
4692 :
4693 : /* There should exist only one entry or none. */
4694 1772 : oldtuple = systable_getnext(scan);
4695 :
4696 : /* If we find an entry, update it with the latest ACL. */
4697 1772 : if (HeapTupleIsValid(oldtuple))
4698 : {
4699 208 : Datum values[Natts_pg_init_privs] = {0};
4700 208 : bool nulls[Natts_pg_init_privs] = {0};
4701 208 : bool replace[Natts_pg_init_privs] = {0};
4702 :
4703 : /* If we have a new ACL to set, then update the row with it. */
4704 208 : if (new_acl)
4705 : {
4706 144 : values[Anum_pg_init_privs_initprivs - 1] = PointerGetDatum(new_acl);
4707 144 : replace[Anum_pg_init_privs_initprivs - 1] = true;
4708 :
4709 144 : oldtuple = heap_modify_tuple(oldtuple, RelationGetDescr(relation),
4710 : values, nulls, replace);
4711 :
4712 144 : CatalogTupleUpdate(relation, &oldtuple->t_self, oldtuple);
4713 : }
4714 : else
4715 : {
4716 : /* new_acl is NULL, so delete the entry we found. */
4717 64 : CatalogTupleDelete(relation, &oldtuple->t_self);
4718 : }
4719 : }
4720 : else
4721 : {
4722 1564 : Datum values[Natts_pg_init_privs] = {0};
4723 1564 : bool nulls[Natts_pg_init_privs] = {0};
4724 :
4725 : /*
4726 : * Only add a new entry if the new ACL is non-NULL.
4727 : *
4728 : * If we are passed in a NULL ACL and no entry exists, we can just
4729 : * fall through and do nothing.
4730 : */
4731 1564 : if (new_acl)
4732 : {
4733 : /* No entry found, so add it. */
4734 500 : values[Anum_pg_init_privs_objoid - 1] = ObjectIdGetDatum(objoid);
4735 500 : values[Anum_pg_init_privs_classoid - 1] = ObjectIdGetDatum(classoid);
4736 500 : values[Anum_pg_init_privs_objsubid - 1] = Int32GetDatum(objsubid);
4737 :
4738 : /* This function only handles initial privileges of extensions */
4739 500 : values[Anum_pg_init_privs_privtype - 1] =
4740 500 : CharGetDatum(INITPRIVS_EXTENSION);
4741 :
4742 500 : values[Anum_pg_init_privs_initprivs - 1] = PointerGetDatum(new_acl);
4743 :
4744 500 : tuple = heap_form_tuple(RelationGetDescr(relation), values, nulls);
4745 :
4746 500 : CatalogTupleInsert(relation, tuple);
4747 : }
4748 : }
4749 :
4750 1772 : systable_endscan(scan);
4751 :
4752 : /* prevent error when processing objects multiple times */
4753 1772 : CommandCounterIncrement();
4754 :
4755 1772 : table_close(relation, RowExclusiveLock);
4756 1772 : }
|
