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 : Oid ownerId, Acl *new_acl);
169 : static void recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid,
170 : Oid ownerId, 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 33314 : 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 33314 : modechg = is_grant ? ACL_MODECHG_ADD : ACL_MODECHG_DEL;
191 :
192 33314 : new_acl = old_acl;
193 :
194 66742 : foreach(j, grantees)
195 : {
196 : AclItem aclitem;
197 : Acl *newer_acl;
198 :
199 33440 : 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 33440 : 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 33440 : 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 33440 : 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 33440 : newer_acl = aclupdate(new_acl, &aclitem, modechg, ownerId, behavior);
226 :
227 : /* avoid memory leak when there are many grantees */
228 33428 : pfree(new_acl);
229 33428 : new_acl = newer_acl;
230 : }
231 :
232 33302 : 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 33140 : 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 33140 : 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;
290 136 : case OBJECT_PARAMETER_ACL:
291 136 : whole_mask = ACL_ALL_RIGHTS_PARAMETER_ACL;
292 136 : 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 33140 : 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 33110 : this_privileges = privileges & ACL_OPTION_TO_PRIVS(avail_goptions);
325 33110 : 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 23228 : 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 23222 : 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 33110 : return this_privileges;
385 : }
386 :
387 : /*
388 : * Called to execute the utility commands GRANT and REVOKE
389 : */
390 : void
391 15384 : ExecuteGrantStmt(GrantStmt *stmt)
392 : {
393 : InternalGrant istmt;
394 : ListCell *cell;
395 : const char *errormsg;
396 : AclMode all_privileges;
397 :
398 15384 : 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 15378 : istmt.is_grant = stmt->is_grant;
418 15378 : istmt.objtype = stmt->objtype;
419 :
420 : /* Collect the OIDs of the target objects */
421 15378 : switch (stmt->targtype)
422 : {
423 15348 : case ACL_TARGET_OBJECT:
424 30670 : istmt.objects = objectNamesToOids(stmt->objtype, stmt->objects,
425 15348 : stmt->is_grant);
426 15322 : 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 15352 : istmt.col_privs = NIL; /* may get filled below */
439 15352 : istmt.grantees = NIL; /* filled below */
440 15352 : istmt.grant_option = stmt->grant_option;
441 15352 : 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 30794 : foreach(cell, stmt->grantees)
449 : {
450 15448 : RoleSpec *grantee = (RoleSpec *) lfirst(cell);
451 : Oid grantee_uid;
452 :
453 15448 : switch (grantee->roletype)
454 : {
455 11896 : case ROLESPEC_PUBLIC:
456 11896 : grantee_uid = ACL_ID_PUBLIC;
457 11896 : break;
458 3552 : default:
459 3552 : grantee_uid = get_rolespec_oid(grantee, false);
460 3546 : break;
461 : }
462 15442 : 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 15346 : 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 74 : case OBJECT_PARAMETER_ACL:
534 74 : all_privileges = ACL_ALL_RIGHTS_PARAMETER_ACL;
535 74 : errormsg = gettext_noop("invalid privilege type %s for parameter");
536 74 : 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 15346 : 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 13314 : istmt.all_privs = false;
558 13314 : istmt.privileges = ACL_NO_RIGHTS;
559 :
560 27034 : foreach(cell, stmt->privileges)
561 : {
562 13744 : 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 13744 : 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 13334 : if (privnode->priv_name == NULL) /* parser mistake? */
580 0 : elog(ERROR, "AccessPriv node must specify privilege or columns");
581 13334 : priv = string_to_privilege(privnode->priv_name);
582 :
583 13334 : if (priv & ~((AclMode) all_privileges))
584 24 : ereport(ERROR,
585 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
586 : errmsg(errormsg, privilege_to_string(priv))));
587 :
588 13310 : istmt.privileges |= priv;
589 : }
590 : }
591 :
592 15322 : ExecGrantStmt_oids(&istmt);
593 15256 : }
594 :
595 : /*
596 : * ExecGrantStmt_oids
597 : *
598 : * Internal entry point for granting and revoking privileges.
599 : */
600 : static void
601 15534 : ExecGrantStmt_oids(InternalGrant *istmt)
602 : {
603 15534 : 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 98 : case OBJECT_PARAMETER_ACL:
640 98 : ExecGrant_Parameter(istmt);
641 98 : 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 15468 : if (EventTriggerSupportsObjectType(istmt->objtype))
654 15086 : EventTriggerCollectGrant(istmt);
655 15468 : }
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 15348 : objectNamesToOids(ObjectType objtype, List *objnames, bool is_grant)
669 : {
670 15348 : List *objects = NIL;
671 : ListCell *cell;
672 :
673 : Assert(objnames != NIL);
674 :
675 15348 : 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 76 : case OBJECT_PARAMETER_ACL:
802 200 : 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 : */
814 126 : char *parameter = strVal(lfirst(cell));
815 126 : Oid parameterId = ParameterAclLookup(parameter, true);
816 :
817 126 : 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 : }
828 124 : if (OidIsValid(parameterId))
829 112 : objects = lappend_oid(objects, parameterId);
830 : }
831 74 : break;
832 0 : default:
833 0 : elog(ERROR, "unrecognized GrantStmt.objtype: %d",
834 : (int) objtype);
835 : }
836 :
837 15322 : 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 : * Notice that this doesn't accept an objsubid parameter, which is a bit bogus
1453 : * since the pg_shdepend record that caused us to call it certainly had one.
1454 : * If, for example, pg_shdepend records the existence of a permission on
1455 : * mytable.mycol, this function will effectively issue a REVOKE ALL ON TABLE
1456 : * mytable. That gets the job done because (per SQL spec) such a REVOKE also
1457 : * revokes per-column permissions. We could not recreate a situation where
1458 : * the role has table-level but not column-level permissions; but it's okay
1459 : * (for now anyway) because this is only used when we're dropping the role
1460 : * and so all its permissions everywhere must go away. At worst it's a bit
1461 : * inefficient if the role has column permissions on several columns of the
1462 : * same table.
1463 : */
1464 : void
1465 242 : RemoveRoleFromObjectACL(Oid roleid, Oid classid, Oid objid)
1466 : {
1467 242 : if (classid == DefaultAclRelationId)
1468 : {
1469 : InternalDefaultACL iacls;
1470 : Form_pg_default_acl pg_default_acl_tuple;
1471 : Relation rel;
1472 : ScanKeyData skey[1];
1473 : SysScanDesc scan;
1474 : HeapTuple tuple;
1475 :
1476 : /* first fetch info needed by SetDefaultACL */
1477 30 : rel = table_open(DefaultAclRelationId, AccessShareLock);
1478 :
1479 30 : ScanKeyInit(&skey[0],
1480 : Anum_pg_default_acl_oid,
1481 : BTEqualStrategyNumber, F_OIDEQ,
1482 : ObjectIdGetDatum(objid));
1483 :
1484 30 : scan = systable_beginscan(rel, DefaultAclOidIndexId, true,
1485 : NULL, 1, skey);
1486 :
1487 30 : tuple = systable_getnext(scan);
1488 :
1489 30 : if (!HeapTupleIsValid(tuple))
1490 0 : elog(ERROR, "could not find tuple for default ACL %u", objid);
1491 :
1492 30 : pg_default_acl_tuple = (Form_pg_default_acl) GETSTRUCT(tuple);
1493 :
1494 30 : iacls.roleid = pg_default_acl_tuple->defaclrole;
1495 30 : iacls.nspid = pg_default_acl_tuple->defaclnamespace;
1496 :
1497 30 : switch (pg_default_acl_tuple->defaclobjtype)
1498 : {
1499 6 : case DEFACLOBJ_RELATION:
1500 6 : iacls.objtype = OBJECT_TABLE;
1501 6 : break;
1502 6 : case DEFACLOBJ_SEQUENCE:
1503 6 : iacls.objtype = OBJECT_SEQUENCE;
1504 6 : break;
1505 6 : case DEFACLOBJ_FUNCTION:
1506 6 : iacls.objtype = OBJECT_FUNCTION;
1507 6 : break;
1508 6 : case DEFACLOBJ_TYPE:
1509 6 : iacls.objtype = OBJECT_TYPE;
1510 6 : break;
1511 6 : case DEFACLOBJ_NAMESPACE:
1512 6 : iacls.objtype = OBJECT_SCHEMA;
1513 6 : break;
1514 0 : default:
1515 : /* Shouldn't get here */
1516 0 : elog(ERROR, "unexpected default ACL type: %d",
1517 : (int) pg_default_acl_tuple->defaclobjtype);
1518 : break;
1519 : }
1520 :
1521 30 : systable_endscan(scan);
1522 30 : table_close(rel, AccessShareLock);
1523 :
1524 30 : iacls.is_grant = false;
1525 30 : iacls.all_privs = true;
1526 30 : iacls.privileges = ACL_NO_RIGHTS;
1527 30 : iacls.grantees = list_make1_oid(roleid);
1528 30 : iacls.grant_option = false;
1529 30 : iacls.behavior = DROP_CASCADE;
1530 :
1531 : /* Do it */
1532 30 : SetDefaultACL(&iacls);
1533 : }
1534 : else
1535 : {
1536 : InternalGrant istmt;
1537 :
1538 212 : switch (classid)
1539 : {
1540 92 : case RelationRelationId:
1541 : /* it's OK to use TABLE for a sequence */
1542 92 : istmt.objtype = OBJECT_TABLE;
1543 92 : break;
1544 10 : case DatabaseRelationId:
1545 10 : istmt.objtype = OBJECT_DATABASE;
1546 10 : break;
1547 4 : case TypeRelationId:
1548 4 : istmt.objtype = OBJECT_TYPE;
1549 4 : break;
1550 34 : case ProcedureRelationId:
1551 34 : istmt.objtype = OBJECT_ROUTINE;
1552 34 : break;
1553 0 : case LanguageRelationId:
1554 0 : istmt.objtype = OBJECT_LANGUAGE;
1555 0 : break;
1556 18 : case LargeObjectRelationId:
1557 18 : istmt.objtype = OBJECT_LARGEOBJECT;
1558 18 : break;
1559 14 : case NamespaceRelationId:
1560 14 : istmt.objtype = OBJECT_SCHEMA;
1561 14 : break;
1562 0 : case TableSpaceRelationId:
1563 0 : istmt.objtype = OBJECT_TABLESPACE;
1564 0 : break;
1565 14 : case ForeignServerRelationId:
1566 14 : istmt.objtype = OBJECT_FOREIGN_SERVER;
1567 14 : break;
1568 2 : case ForeignDataWrapperRelationId:
1569 2 : istmt.objtype = OBJECT_FDW;
1570 2 : break;
1571 24 : case ParameterAclRelationId:
1572 24 : istmt.objtype = OBJECT_PARAMETER_ACL;
1573 24 : break;
1574 0 : default:
1575 0 : elog(ERROR, "unexpected object class %u", classid);
1576 : break;
1577 : }
1578 212 : istmt.is_grant = false;
1579 212 : istmt.objects = list_make1_oid(objid);
1580 212 : istmt.all_privs = true;
1581 212 : istmt.privileges = ACL_NO_RIGHTS;
1582 212 : istmt.col_privs = NIL;
1583 212 : istmt.grantees = list_make1_oid(roleid);
1584 212 : istmt.grant_option = false;
1585 212 : istmt.behavior = DROP_CASCADE;
1586 :
1587 212 : ExecGrantStmt_oids(&istmt);
1588 : }
1589 242 : }
1590 :
1591 :
1592 : /*
1593 : * expand_col_privileges
1594 : *
1595 : * OR the specified privilege(s) into per-column array entries for each
1596 : * specified attribute. The per-column array is indexed starting at
1597 : * FirstLowInvalidHeapAttributeNumber, up to relation's last attribute.
1598 : */
1599 : static void
1600 410 : expand_col_privileges(List *colnames, Oid table_oid,
1601 : AclMode this_privileges,
1602 : AclMode *col_privileges,
1603 : int num_col_privileges)
1604 : {
1605 : ListCell *cell;
1606 :
1607 2310 : foreach(cell, colnames)
1608 : {
1609 1900 : char *colname = strVal(lfirst(cell));
1610 : AttrNumber attnum;
1611 :
1612 1900 : attnum = get_attnum(table_oid, colname);
1613 1900 : if (attnum == InvalidAttrNumber)
1614 0 : ereport(ERROR,
1615 : (errcode(ERRCODE_UNDEFINED_COLUMN),
1616 : errmsg("column \"%s\" of relation \"%s\" does not exist",
1617 : colname, get_rel_name(table_oid))));
1618 1900 : attnum -= FirstLowInvalidHeapAttributeNumber;
1619 1900 : if (attnum <= 0 || attnum >= num_col_privileges)
1620 0 : elog(ERROR, "column number out of range"); /* safety check */
1621 1900 : col_privileges[attnum] |= this_privileges;
1622 : }
1623 410 : }
1624 :
1625 : /*
1626 : * expand_all_col_privileges
1627 : *
1628 : * OR the specified privilege(s) into per-column array entries for each valid
1629 : * attribute of a relation. The per-column array is indexed starting at
1630 : * FirstLowInvalidHeapAttributeNumber, up to relation's last attribute.
1631 : */
1632 : static void
1633 1516 : expand_all_col_privileges(Oid table_oid, Form_pg_class classForm,
1634 : AclMode this_privileges,
1635 : AclMode *col_privileges,
1636 : int num_col_privileges)
1637 : {
1638 : AttrNumber curr_att;
1639 :
1640 : Assert(classForm->relnatts - FirstLowInvalidHeapAttributeNumber < num_col_privileges);
1641 1516 : for (curr_att = FirstLowInvalidHeapAttributeNumber + 1;
1642 22790 : curr_att <= classForm->relnatts;
1643 21274 : curr_att++)
1644 : {
1645 : HeapTuple attTuple;
1646 : bool isdropped;
1647 :
1648 21274 : if (curr_att == InvalidAttrNumber)
1649 1516 : continue;
1650 :
1651 : /* Views don't have any system columns at all */
1652 19758 : if (classForm->relkind == RELKIND_VIEW && curr_att < 0)
1653 3816 : continue;
1654 :
1655 15942 : attTuple = SearchSysCache2(ATTNUM,
1656 : ObjectIdGetDatum(table_oid),
1657 : Int16GetDatum(curr_att));
1658 15942 : if (!HeapTupleIsValid(attTuple))
1659 0 : elog(ERROR, "cache lookup failed for attribute %d of relation %u",
1660 : curr_att, table_oid);
1661 :
1662 15942 : isdropped = ((Form_pg_attribute) GETSTRUCT(attTuple))->attisdropped;
1663 :
1664 15942 : ReleaseSysCache(attTuple);
1665 :
1666 : /* ignore dropped columns */
1667 15942 : if (isdropped)
1668 6 : continue;
1669 :
1670 15936 : col_privileges[curr_att - FirstLowInvalidHeapAttributeNumber] |= this_privileges;
1671 : }
1672 1516 : }
1673 :
1674 : /*
1675 : * This processes attributes, but expects to be called from
1676 : * ExecGrant_Relation, not directly from ExecuteGrantStmt.
1677 : */
1678 : static void
1679 17794 : ExecGrant_Attribute(InternalGrant *istmt, Oid relOid, const char *relname,
1680 : AttrNumber attnum, Oid ownerId, AclMode col_privileges,
1681 : Relation attRelation, const Acl *old_rel_acl)
1682 : {
1683 : HeapTuple attr_tuple;
1684 : Form_pg_attribute pg_attribute_tuple;
1685 : Acl *old_acl;
1686 : Acl *new_acl;
1687 : Acl *merged_acl;
1688 : Datum aclDatum;
1689 : bool isNull;
1690 : Oid grantorId;
1691 : AclMode avail_goptions;
1692 : bool need_update;
1693 : HeapTuple newtuple;
1694 17794 : Datum values[Natts_pg_attribute] = {0};
1695 17794 : bool nulls[Natts_pg_attribute] = {0};
1696 17794 : bool replaces[Natts_pg_attribute] = {0};
1697 : int noldmembers;
1698 : int nnewmembers;
1699 : Oid *oldmembers;
1700 : Oid *newmembers;
1701 :
1702 17794 : attr_tuple = SearchSysCache2(ATTNUM,
1703 : ObjectIdGetDatum(relOid),
1704 : Int16GetDatum(attnum));
1705 17794 : if (!HeapTupleIsValid(attr_tuple))
1706 0 : elog(ERROR, "cache lookup failed for attribute %d of relation %u",
1707 : attnum, relOid);
1708 17794 : pg_attribute_tuple = (Form_pg_attribute) GETSTRUCT(attr_tuple);
1709 :
1710 : /*
1711 : * Get working copy of existing ACL. If there's no ACL, substitute the
1712 : * proper default.
1713 : */
1714 17794 : aclDatum = SysCacheGetAttr(ATTNUM, attr_tuple, Anum_pg_attribute_attacl,
1715 : &isNull);
1716 17794 : if (isNull)
1717 : {
1718 17488 : old_acl = acldefault(OBJECT_COLUMN, ownerId);
1719 : /* There are no old member roles according to the catalogs */
1720 17488 : noldmembers = 0;
1721 17488 : oldmembers = NULL;
1722 : }
1723 : else
1724 : {
1725 306 : old_acl = DatumGetAclPCopy(aclDatum);
1726 : /* Get the roles mentioned in the existing ACL */
1727 306 : noldmembers = aclmembers(old_acl, &oldmembers);
1728 : }
1729 :
1730 : /*
1731 : * In select_best_grantor we should consider existing table-level ACL bits
1732 : * as well as the per-column ACL. Build a new ACL that is their
1733 : * concatenation. (This is a bit cheap and dirty compared to merging them
1734 : * properly with no duplications, but it's all we need here.)
1735 : */
1736 17794 : merged_acl = aclconcat(old_rel_acl, old_acl);
1737 :
1738 : /* Determine ID to do the grant as, and available grant options */
1739 17794 : select_best_grantor(GetUserId(), col_privileges,
1740 : merged_acl, ownerId,
1741 : &grantorId, &avail_goptions);
1742 :
1743 17794 : pfree(merged_acl);
1744 :
1745 : /*
1746 : * Restrict the privileges to what we can actually grant, and emit the
1747 : * standards-mandated warning and error messages. Note: we don't track
1748 : * whether the user actually used the ALL PRIVILEGES(columns) syntax for
1749 : * each column; we just approximate it by whether all the possible
1750 : * privileges are specified now. Since the all_privs flag only determines
1751 : * whether a warning is issued, this seems close enough.
1752 : */
1753 : col_privileges =
1754 17794 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
1755 : (col_privileges == ACL_ALL_RIGHTS_COLUMN),
1756 : col_privileges,
1757 : relOid, grantorId, OBJECT_COLUMN,
1758 : relname, attnum,
1759 17794 : NameStr(pg_attribute_tuple->attname));
1760 :
1761 : /*
1762 : * Generate new ACL.
1763 : */
1764 17794 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
1765 17794 : istmt->grant_option,
1766 : istmt->behavior, istmt->grantees,
1767 : col_privileges, grantorId,
1768 : ownerId);
1769 :
1770 : /*
1771 : * We need the members of both old and new ACLs so we can correct the
1772 : * shared dependency information.
1773 : */
1774 17794 : nnewmembers = aclmembers(new_acl, &newmembers);
1775 :
1776 : /* finished building new ACL value, now insert it */
1777 :
1778 : /*
1779 : * If the updated ACL is empty, we can set attacl to null, and maybe even
1780 : * avoid an update of the pg_attribute row. This is worth testing because
1781 : * we'll come through here multiple times for any relation-level REVOKE,
1782 : * even if there were never any column GRANTs. Note we are assuming that
1783 : * the "default" ACL state for columns is empty.
1784 : */
1785 17794 : if (ACL_NUM(new_acl) > 0)
1786 : {
1787 1924 : values[Anum_pg_attribute_attacl - 1] = PointerGetDatum(new_acl);
1788 1924 : need_update = true;
1789 : }
1790 : else
1791 : {
1792 15870 : nulls[Anum_pg_attribute_attacl - 1] = true;
1793 15870 : need_update = !isNull;
1794 : }
1795 17794 : replaces[Anum_pg_attribute_attacl - 1] = true;
1796 :
1797 17794 : if (need_update)
1798 : {
1799 2018 : newtuple = heap_modify_tuple(attr_tuple, RelationGetDescr(attRelation),
1800 : values, nulls, replaces);
1801 :
1802 2018 : CatalogTupleUpdate(attRelation, &newtuple->t_self, newtuple);
1803 :
1804 : /* Update initial privileges for extensions */
1805 2018 : recordExtensionInitPriv(relOid, RelationRelationId, attnum, ownerId,
1806 2018 : ACL_NUM(new_acl) > 0 ? new_acl : NULL);
1807 :
1808 : /* Update the shared dependency ACL info */
1809 2018 : updateAclDependencies(RelationRelationId, relOid, attnum,
1810 : ownerId,
1811 : noldmembers, oldmembers,
1812 : nnewmembers, newmembers);
1813 : }
1814 :
1815 17794 : pfree(new_acl);
1816 :
1817 17794 : ReleaseSysCache(attr_tuple);
1818 17794 : }
1819 :
1820 : /*
1821 : * This processes both sequences and non-sequences.
1822 : */
1823 : static void
1824 7898 : ExecGrant_Relation(InternalGrant *istmt)
1825 : {
1826 : Relation relation;
1827 : Relation attRelation;
1828 : ListCell *cell;
1829 :
1830 7898 : relation = table_open(RelationRelationId, RowExclusiveLock);
1831 7898 : attRelation = table_open(AttributeRelationId, RowExclusiveLock);
1832 :
1833 15856 : foreach(cell, istmt->objects)
1834 : {
1835 7964 : Oid relOid = lfirst_oid(cell);
1836 : Datum aclDatum;
1837 : Form_pg_class pg_class_tuple;
1838 : bool isNull;
1839 : AclMode this_privileges;
1840 : AclMode *col_privileges;
1841 : int num_col_privileges;
1842 : bool have_col_privileges;
1843 : Acl *old_acl;
1844 : Acl *old_rel_acl;
1845 : int noldmembers;
1846 : Oid *oldmembers;
1847 : Oid ownerId;
1848 : HeapTuple tuple;
1849 : ListCell *cell_colprivs;
1850 :
1851 7964 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(relOid));
1852 7964 : if (!HeapTupleIsValid(tuple))
1853 0 : elog(ERROR, "cache lookup failed for relation %u", relOid);
1854 7964 : pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
1855 :
1856 : /* Not sensible to grant on an index */
1857 7964 : if (pg_class_tuple->relkind == RELKIND_INDEX ||
1858 7964 : pg_class_tuple->relkind == RELKIND_PARTITIONED_INDEX)
1859 0 : ereport(ERROR,
1860 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1861 : errmsg("\"%s\" is an index",
1862 : NameStr(pg_class_tuple->relname))));
1863 :
1864 : /* Composite types aren't tables either */
1865 7964 : if (pg_class_tuple->relkind == RELKIND_COMPOSITE_TYPE)
1866 0 : ereport(ERROR,
1867 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1868 : errmsg("\"%s\" is a composite type",
1869 : NameStr(pg_class_tuple->relname))));
1870 :
1871 : /* Used GRANT SEQUENCE on a non-sequence? */
1872 7964 : if (istmt->objtype == OBJECT_SEQUENCE &&
1873 16 : pg_class_tuple->relkind != RELKIND_SEQUENCE)
1874 0 : ereport(ERROR,
1875 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
1876 : errmsg("\"%s\" is not a sequence",
1877 : NameStr(pg_class_tuple->relname))));
1878 :
1879 : /* Adjust the default permissions based on object type */
1880 7964 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
1881 : {
1882 1570 : if (pg_class_tuple->relkind == RELKIND_SEQUENCE)
1883 74 : this_privileges = ACL_ALL_RIGHTS_SEQUENCE;
1884 : else
1885 1496 : this_privileges = ACL_ALL_RIGHTS_RELATION;
1886 : }
1887 : else
1888 6394 : this_privileges = istmt->privileges;
1889 :
1890 : /*
1891 : * The GRANT TABLE syntax can be used for sequences and non-sequences,
1892 : * so we have to look at the relkind to determine the supported
1893 : * permissions. The OR of table and sequence permissions were already
1894 : * checked.
1895 : */
1896 7964 : if (istmt->objtype == OBJECT_TABLE)
1897 : {
1898 7948 : if (pg_class_tuple->relkind == RELKIND_SEQUENCE)
1899 : {
1900 : /*
1901 : * For backward compatibility, just throw a warning for
1902 : * invalid sequence permissions when using the non-sequence
1903 : * GRANT syntax.
1904 : */
1905 144 : if (this_privileges & ~((AclMode) ACL_ALL_RIGHTS_SEQUENCE))
1906 : {
1907 : /*
1908 : * Mention the object name because the user needs to know
1909 : * which operations succeeded. This is required because
1910 : * WARNING allows the command to continue.
1911 : */
1912 0 : ereport(WARNING,
1913 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1914 : errmsg("sequence \"%s\" only supports USAGE, SELECT, and UPDATE privileges",
1915 : NameStr(pg_class_tuple->relname))));
1916 0 : this_privileges &= (AclMode) ACL_ALL_RIGHTS_SEQUENCE;
1917 : }
1918 : }
1919 : else
1920 : {
1921 7804 : if (this_privileges & ~((AclMode) ACL_ALL_RIGHTS_RELATION))
1922 : {
1923 : /*
1924 : * USAGE is the only permission supported by sequences but
1925 : * not by non-sequences. Don't mention the object name
1926 : * because we didn't in the combined TABLE | SEQUENCE
1927 : * check.
1928 : */
1929 0 : ereport(ERROR,
1930 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
1931 : errmsg("invalid privilege type %s for table",
1932 : "USAGE")));
1933 : }
1934 : }
1935 : }
1936 :
1937 : /*
1938 : * Set up array in which we'll accumulate any column privilege bits
1939 : * that need modification. The array is indexed such that entry [0]
1940 : * corresponds to FirstLowInvalidHeapAttributeNumber.
1941 : */
1942 7964 : num_col_privileges = pg_class_tuple->relnatts - FirstLowInvalidHeapAttributeNumber + 1;
1943 7964 : col_privileges = (AclMode *) palloc0(num_col_privileges * sizeof(AclMode));
1944 7964 : have_col_privileges = false;
1945 :
1946 : /*
1947 : * If we are revoking relation privileges that are also column
1948 : * privileges, we must implicitly revoke them from each column too,
1949 : * per SQL spec. (We don't need to implicitly add column privileges
1950 : * during GRANT because the permissions-checking code always checks
1951 : * both relation and per-column privileges.)
1952 : */
1953 7964 : if (!istmt->is_grant &&
1954 1572 : (this_privileges & ACL_ALL_RIGHTS_COLUMN) != 0)
1955 : {
1956 1516 : expand_all_col_privileges(relOid, pg_class_tuple,
1957 : this_privileges & ACL_ALL_RIGHTS_COLUMN,
1958 : col_privileges,
1959 : num_col_privileges);
1960 1516 : have_col_privileges = true;
1961 : }
1962 :
1963 : /*
1964 : * Get owner ID and working copy of existing ACL. If there's no ACL,
1965 : * substitute the proper default.
1966 : */
1967 7964 : ownerId = pg_class_tuple->relowner;
1968 7964 : aclDatum = SysCacheGetAttr(RELOID, tuple, Anum_pg_class_relacl,
1969 : &isNull);
1970 7964 : if (isNull)
1971 : {
1972 6874 : switch (pg_class_tuple->relkind)
1973 : {
1974 84 : case RELKIND_SEQUENCE:
1975 84 : old_acl = acldefault(OBJECT_SEQUENCE, ownerId);
1976 84 : break;
1977 6790 : default:
1978 6790 : old_acl = acldefault(OBJECT_TABLE, ownerId);
1979 6790 : break;
1980 : }
1981 : /* There are no old member roles according to the catalogs */
1982 6874 : noldmembers = 0;
1983 6874 : oldmembers = NULL;
1984 : }
1985 : else
1986 : {
1987 1090 : old_acl = DatumGetAclPCopy(aclDatum);
1988 : /* Get the roles mentioned in the existing ACL */
1989 1090 : noldmembers = aclmembers(old_acl, &oldmembers);
1990 : }
1991 :
1992 : /* Need an extra copy of original rel ACL for column handling */
1993 7964 : old_rel_acl = aclcopy(old_acl);
1994 :
1995 : /*
1996 : * Handle relation-level privileges, if any were specified
1997 : */
1998 7964 : if (this_privileges != ACL_NO_RIGHTS)
1999 : {
2000 : AclMode avail_goptions;
2001 : Acl *new_acl;
2002 : Oid grantorId;
2003 : HeapTuple newtuple;
2004 7566 : Datum values[Natts_pg_class] = {0};
2005 7566 : bool nulls[Natts_pg_class] = {0};
2006 7566 : bool replaces[Natts_pg_class] = {0};
2007 : int nnewmembers;
2008 : Oid *newmembers;
2009 : ObjectType objtype;
2010 :
2011 : /* Determine ID to do the grant as, and available grant options */
2012 7566 : select_best_grantor(GetUserId(), this_privileges,
2013 : old_acl, ownerId,
2014 : &grantorId, &avail_goptions);
2015 :
2016 7566 : switch (pg_class_tuple->relkind)
2017 : {
2018 160 : case RELKIND_SEQUENCE:
2019 160 : objtype = OBJECT_SEQUENCE;
2020 160 : break;
2021 7406 : default:
2022 7406 : objtype = OBJECT_TABLE;
2023 7406 : break;
2024 : }
2025 :
2026 : /*
2027 : * Restrict the privileges to what we can actually grant, and emit
2028 : * the standards-mandated warning and error messages.
2029 : */
2030 : this_privileges =
2031 7566 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2032 7566 : istmt->all_privs, this_privileges,
2033 : relOid, grantorId, objtype,
2034 7566 : NameStr(pg_class_tuple->relname),
2035 : 0, NULL);
2036 :
2037 : /*
2038 : * Generate new ACL.
2039 : */
2040 7566 : new_acl = merge_acl_with_grant(old_acl,
2041 7566 : istmt->is_grant,
2042 7566 : istmt->grant_option,
2043 : istmt->behavior,
2044 : istmt->grantees,
2045 : this_privileges,
2046 : grantorId,
2047 : ownerId);
2048 :
2049 : /*
2050 : * We need the members of both old and new ACLs so we can correct
2051 : * the shared dependency information.
2052 : */
2053 7560 : nnewmembers = aclmembers(new_acl, &newmembers);
2054 :
2055 : /* finished building new ACL value, now insert it */
2056 7560 : replaces[Anum_pg_class_relacl - 1] = true;
2057 7560 : values[Anum_pg_class_relacl - 1] = PointerGetDatum(new_acl);
2058 :
2059 7560 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation),
2060 : values, nulls, replaces);
2061 :
2062 7560 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2063 :
2064 : /* Update initial privileges for extensions */
2065 7560 : recordExtensionInitPriv(relOid, RelationRelationId, 0,
2066 : ownerId, new_acl);
2067 :
2068 : /* Update the shared dependency ACL info */
2069 7560 : updateAclDependencies(RelationRelationId, relOid, 0,
2070 : ownerId,
2071 : noldmembers, oldmembers,
2072 : nnewmembers, newmembers);
2073 :
2074 7560 : pfree(new_acl);
2075 : }
2076 :
2077 : /*
2078 : * Handle column-level privileges, if any were specified or implied.
2079 : * We first expand the user-specified column privileges into the
2080 : * array, and then iterate over all nonempty array entries.
2081 : */
2082 8368 : foreach(cell_colprivs, istmt->col_privs)
2083 : {
2084 410 : AccessPriv *col_privs = (AccessPriv *) lfirst(cell_colprivs);
2085 :
2086 410 : if (col_privs->priv_name == NULL)
2087 18 : this_privileges = ACL_ALL_RIGHTS_COLUMN;
2088 : else
2089 392 : this_privileges = string_to_privilege(col_privs->priv_name);
2090 :
2091 410 : if (this_privileges & ~((AclMode) ACL_ALL_RIGHTS_COLUMN))
2092 0 : ereport(ERROR,
2093 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2094 : errmsg("invalid privilege type %s for column",
2095 : privilege_to_string(this_privileges))));
2096 :
2097 410 : if (pg_class_tuple->relkind == RELKIND_SEQUENCE &&
2098 0 : this_privileges & ~((AclMode) ACL_SELECT))
2099 : {
2100 : /*
2101 : * The only column privilege allowed on sequences is SELECT.
2102 : * This is a warning not error because we do it that way for
2103 : * relation-level privileges.
2104 : */
2105 0 : ereport(WARNING,
2106 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2107 : errmsg("sequence \"%s\" only supports SELECT column privileges",
2108 : NameStr(pg_class_tuple->relname))));
2109 :
2110 0 : this_privileges &= (AclMode) ACL_SELECT;
2111 : }
2112 :
2113 410 : expand_col_privileges(col_privs->cols, relOid,
2114 : this_privileges,
2115 : col_privileges,
2116 : num_col_privileges);
2117 410 : have_col_privileges = true;
2118 : }
2119 :
2120 7958 : if (have_col_privileges)
2121 : {
2122 : AttrNumber i;
2123 :
2124 30568 : for (i = 0; i < num_col_privileges; i++)
2125 : {
2126 28660 : if (col_privileges[i] == ACL_NO_RIGHTS)
2127 10866 : continue;
2128 17794 : ExecGrant_Attribute(istmt,
2129 : relOid,
2130 17794 : NameStr(pg_class_tuple->relname),
2131 17794 : i + FirstLowInvalidHeapAttributeNumber,
2132 : ownerId,
2133 17794 : col_privileges[i],
2134 : attRelation,
2135 : old_rel_acl);
2136 : }
2137 : }
2138 :
2139 7958 : pfree(old_rel_acl);
2140 7958 : pfree(col_privileges);
2141 :
2142 7958 : ReleaseSysCache(tuple);
2143 :
2144 : /* prevent error when processing duplicate objects */
2145 7958 : CommandCounterIncrement();
2146 : }
2147 :
2148 7892 : table_close(attRelation, RowExclusiveLock);
2149 7892 : table_close(relation, RowExclusiveLock);
2150 7892 : }
2151 :
2152 : static void
2153 7464 : ExecGrant_common(InternalGrant *istmt, Oid classid, AclMode default_privs,
2154 : void (*object_check) (InternalGrant *istmt, HeapTuple tuple))
2155 : {
2156 : int cacheid;
2157 : Relation relation;
2158 : ListCell *cell;
2159 :
2160 7464 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
2161 630 : istmt->privileges = default_privs;
2162 :
2163 7464 : cacheid = get_object_catcache_oid(classid);
2164 :
2165 7464 : relation = table_open(classid, RowExclusiveLock);
2166 :
2167 14992 : foreach(cell, istmt->objects)
2168 : {
2169 7588 : Oid objectid = lfirst_oid(cell);
2170 : Datum aclDatum;
2171 : Datum nameDatum;
2172 : bool isNull;
2173 : AclMode avail_goptions;
2174 : AclMode this_privileges;
2175 : Acl *old_acl;
2176 : Acl *new_acl;
2177 : Oid grantorId;
2178 : Oid ownerId;
2179 : HeapTuple tuple;
2180 : HeapTuple newtuple;
2181 7588 : Datum *values = palloc0_array(Datum, RelationGetDescr(relation)->natts);
2182 7588 : bool *nulls = palloc0_array(bool, RelationGetDescr(relation)->natts);
2183 7588 : bool *replaces = palloc0_array(bool, RelationGetDescr(relation)->natts);
2184 : int noldmembers;
2185 : int nnewmembers;
2186 : Oid *oldmembers;
2187 : Oid *newmembers;
2188 :
2189 7588 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
2190 7588 : if (!HeapTupleIsValid(tuple))
2191 0 : elog(ERROR, "cache lookup failed for %s %u", get_object_class_descr(classid), objectid);
2192 :
2193 : /*
2194 : * Additional object-type-specific checks
2195 : */
2196 7588 : if (object_check)
2197 182 : object_check(istmt, tuple);
2198 :
2199 : /*
2200 : * Get owner ID and working copy of existing ACL. If there's no ACL,
2201 : * substitute the proper default.
2202 : */
2203 7564 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
2204 : tuple,
2205 7564 : get_object_attnum_owner(classid)));
2206 7564 : aclDatum = SysCacheGetAttr(cacheid,
2207 : tuple,
2208 7564 : get_object_attnum_acl(classid),
2209 : &isNull);
2210 7564 : if (isNull)
2211 : {
2212 5872 : old_acl = acldefault(get_object_type(classid, objectid), ownerId);
2213 : /* There are no old member roles according to the catalogs */
2214 5872 : noldmembers = 0;
2215 5872 : oldmembers = NULL;
2216 : }
2217 : else
2218 : {
2219 1692 : old_acl = DatumGetAclPCopy(aclDatum);
2220 : /* Get the roles mentioned in the existing ACL */
2221 1692 : noldmembers = aclmembers(old_acl, &oldmembers);
2222 : }
2223 :
2224 : /* Determine ID to do the grant as, and available grant options */
2225 7564 : select_best_grantor(GetUserId(), istmt->privileges,
2226 : old_acl, ownerId,
2227 : &grantorId, &avail_goptions);
2228 :
2229 7564 : nameDatum = SysCacheGetAttrNotNull(cacheid, tuple,
2230 7564 : get_object_attnum_name(classid));
2231 :
2232 : /*
2233 : * Restrict the privileges to what we can actually grant, and emit the
2234 : * standards-mandated warning and error messages.
2235 : */
2236 : this_privileges =
2237 15128 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2238 7564 : istmt->all_privs, istmt->privileges,
2239 : objectid, grantorId, get_object_type(classid, objectid),
2240 7564 : NameStr(*DatumGetName(nameDatum)),
2241 : 0, NULL);
2242 :
2243 : /*
2244 : * Generate new ACL.
2245 : */
2246 7534 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
2247 7534 : istmt->grant_option, istmt->behavior,
2248 : istmt->grantees, this_privileges,
2249 : grantorId, ownerId);
2250 :
2251 : /*
2252 : * We need the members of both old and new ACLs so we can correct the
2253 : * shared dependency information.
2254 : */
2255 7528 : nnewmembers = aclmembers(new_acl, &newmembers);
2256 :
2257 : /* finished building new ACL value, now insert it */
2258 7528 : replaces[get_object_attnum_acl(classid) - 1] = true;
2259 7528 : values[get_object_attnum_acl(classid) - 1] = PointerGetDatum(new_acl);
2260 :
2261 7528 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation), values,
2262 : nulls, replaces);
2263 :
2264 7528 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2265 :
2266 : /* Update initial privileges for extensions */
2267 7528 : recordExtensionInitPriv(objectid, classid, 0, ownerId, new_acl);
2268 :
2269 : /* Update the shared dependency ACL info */
2270 7528 : updateAclDependencies(classid,
2271 : objectid, 0,
2272 : ownerId,
2273 : noldmembers, oldmembers,
2274 : nnewmembers, newmembers);
2275 :
2276 7528 : ReleaseSysCache(tuple);
2277 :
2278 7528 : pfree(new_acl);
2279 :
2280 : /* prevent error when processing duplicate objects */
2281 7528 : CommandCounterIncrement();
2282 : }
2283 :
2284 7404 : table_close(relation, RowExclusiveLock);
2285 7404 : }
2286 :
2287 : static void
2288 42 : ExecGrant_Language_check(InternalGrant *istmt, HeapTuple tuple)
2289 : {
2290 : Form_pg_language pg_language_tuple;
2291 :
2292 42 : pg_language_tuple = (Form_pg_language) GETSTRUCT(tuple);
2293 :
2294 42 : if (!pg_language_tuple->lanpltrusted)
2295 6 : ereport(ERROR,
2296 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
2297 : errmsg("language \"%s\" is not trusted",
2298 : NameStr(pg_language_tuple->lanname)),
2299 : errdetail("GRANT and REVOKE are not allowed on untrusted languages, "
2300 : "because only superusers can use untrusted languages.")));
2301 36 : }
2302 :
2303 : static void
2304 74 : ExecGrant_Largeobject(InternalGrant *istmt)
2305 : {
2306 : Relation relation;
2307 : ListCell *cell;
2308 :
2309 74 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
2310 44 : istmt->privileges = ACL_ALL_RIGHTS_LARGEOBJECT;
2311 :
2312 74 : relation = table_open(LargeObjectMetadataRelationId,
2313 : RowExclusiveLock);
2314 :
2315 154 : foreach(cell, istmt->objects)
2316 : {
2317 80 : Oid loid = lfirst_oid(cell);
2318 : Form_pg_largeobject_metadata form_lo_meta;
2319 : char loname[NAMEDATALEN];
2320 : Datum aclDatum;
2321 : bool isNull;
2322 : AclMode avail_goptions;
2323 : AclMode this_privileges;
2324 : Acl *old_acl;
2325 : Acl *new_acl;
2326 : Oid grantorId;
2327 : Oid ownerId;
2328 : HeapTuple newtuple;
2329 80 : Datum values[Natts_pg_largeobject_metadata] = {0};
2330 80 : bool nulls[Natts_pg_largeobject_metadata] = {0};
2331 80 : bool replaces[Natts_pg_largeobject_metadata] = {0};
2332 : int noldmembers;
2333 : int nnewmembers;
2334 : Oid *oldmembers;
2335 : Oid *newmembers;
2336 : ScanKeyData entry[1];
2337 : SysScanDesc scan;
2338 : HeapTuple tuple;
2339 :
2340 : /* There's no syscache for pg_largeobject_metadata */
2341 80 : ScanKeyInit(&entry[0],
2342 : Anum_pg_largeobject_metadata_oid,
2343 : BTEqualStrategyNumber, F_OIDEQ,
2344 : ObjectIdGetDatum(loid));
2345 :
2346 80 : scan = systable_beginscan(relation,
2347 : LargeObjectMetadataOidIndexId, true,
2348 : NULL, 1, entry);
2349 :
2350 80 : tuple = systable_getnext(scan);
2351 80 : if (!HeapTupleIsValid(tuple))
2352 0 : elog(ERROR, "could not find tuple for large object %u", loid);
2353 :
2354 80 : form_lo_meta = (Form_pg_largeobject_metadata) GETSTRUCT(tuple);
2355 :
2356 : /*
2357 : * Get owner ID and working copy of existing ACL. If there's no ACL,
2358 : * substitute the proper default.
2359 : */
2360 80 : ownerId = form_lo_meta->lomowner;
2361 80 : aclDatum = heap_getattr(tuple,
2362 : Anum_pg_largeobject_metadata_lomacl,
2363 : RelationGetDescr(relation), &isNull);
2364 80 : if (isNull)
2365 : {
2366 44 : old_acl = acldefault(OBJECT_LARGEOBJECT, ownerId);
2367 : /* There are no old member roles according to the catalogs */
2368 44 : noldmembers = 0;
2369 44 : oldmembers = NULL;
2370 : }
2371 : else
2372 : {
2373 36 : old_acl = DatumGetAclPCopy(aclDatum);
2374 : /* Get the roles mentioned in the existing ACL */
2375 36 : noldmembers = aclmembers(old_acl, &oldmembers);
2376 : }
2377 :
2378 : /* Determine ID to do the grant as, and available grant options */
2379 80 : select_best_grantor(GetUserId(), istmt->privileges,
2380 : old_acl, ownerId,
2381 : &grantorId, &avail_goptions);
2382 :
2383 : /*
2384 : * Restrict the privileges to what we can actually grant, and emit the
2385 : * standards-mandated warning and error messages.
2386 : */
2387 80 : snprintf(loname, sizeof(loname), "large object %u", loid);
2388 : this_privileges =
2389 80 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2390 80 : istmt->all_privs, istmt->privileges,
2391 : loid, grantorId, OBJECT_LARGEOBJECT,
2392 : loname, 0, NULL);
2393 :
2394 : /*
2395 : * Generate new ACL.
2396 : */
2397 80 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
2398 80 : istmt->grant_option, istmt->behavior,
2399 : istmt->grantees, this_privileges,
2400 : grantorId, ownerId);
2401 :
2402 : /*
2403 : * We need the members of both old and new ACLs so we can correct the
2404 : * shared dependency information.
2405 : */
2406 80 : nnewmembers = aclmembers(new_acl, &newmembers);
2407 :
2408 : /* finished building new ACL value, now insert it */
2409 80 : replaces[Anum_pg_largeobject_metadata_lomacl - 1] = true;
2410 : values[Anum_pg_largeobject_metadata_lomacl - 1]
2411 80 : = PointerGetDatum(new_acl);
2412 :
2413 80 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation),
2414 : values, nulls, replaces);
2415 :
2416 80 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2417 :
2418 : /* Update initial privileges for extensions */
2419 80 : recordExtensionInitPriv(loid, LargeObjectRelationId, 0,
2420 : ownerId, new_acl);
2421 :
2422 : /* Update the shared dependency ACL info */
2423 80 : updateAclDependencies(LargeObjectRelationId,
2424 : form_lo_meta->oid, 0,
2425 : ownerId,
2426 : noldmembers, oldmembers,
2427 : nnewmembers, newmembers);
2428 :
2429 80 : systable_endscan(scan);
2430 :
2431 80 : pfree(new_acl);
2432 :
2433 : /* prevent error when processing duplicate objects */
2434 80 : CommandCounterIncrement();
2435 : }
2436 :
2437 74 : table_close(relation, RowExclusiveLock);
2438 74 : }
2439 :
2440 : static void
2441 140 : ExecGrant_Type_check(InternalGrant *istmt, HeapTuple tuple)
2442 : {
2443 : Form_pg_type pg_type_tuple;
2444 :
2445 140 : pg_type_tuple = (Form_pg_type) GETSTRUCT(tuple);
2446 :
2447 : /* Disallow GRANT on dependent types */
2448 140 : if (IsTrueArrayType(pg_type_tuple))
2449 6 : ereport(ERROR,
2450 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2451 : errmsg("cannot set privileges of array types"),
2452 : errhint("Set the privileges of the element type instead.")));
2453 134 : if (pg_type_tuple->typtype == TYPTYPE_MULTIRANGE)
2454 6 : ereport(ERROR,
2455 : (errcode(ERRCODE_INVALID_GRANT_OPERATION),
2456 : errmsg("cannot set privileges of multirange types"),
2457 : errhint("Set the privileges of the range type instead.")));
2458 :
2459 : /* Used GRANT DOMAIN on a non-domain? */
2460 128 : if (istmt->objtype == OBJECT_DOMAIN &&
2461 26 : pg_type_tuple->typtype != TYPTYPE_DOMAIN)
2462 6 : ereport(ERROR,
2463 : (errcode(ERRCODE_WRONG_OBJECT_TYPE),
2464 : errmsg("\"%s\" is not a domain",
2465 : NameStr(pg_type_tuple->typname))));
2466 122 : }
2467 :
2468 : static void
2469 98 : ExecGrant_Parameter(InternalGrant *istmt)
2470 : {
2471 : Relation relation;
2472 : ListCell *cell;
2473 :
2474 98 : if (istmt->all_privs && istmt->privileges == ACL_NO_RIGHTS)
2475 42 : istmt->privileges = ACL_ALL_RIGHTS_PARAMETER_ACL;
2476 :
2477 98 : relation = table_open(ParameterAclRelationId, RowExclusiveLock);
2478 :
2479 234 : foreach(cell, istmt->objects)
2480 : {
2481 136 : Oid parameterId = lfirst_oid(cell);
2482 : Datum nameDatum;
2483 : const char *parname;
2484 : Datum aclDatum;
2485 : bool isNull;
2486 : AclMode avail_goptions;
2487 : AclMode this_privileges;
2488 : Acl *old_acl;
2489 : Acl *new_acl;
2490 : Oid grantorId;
2491 : Oid ownerId;
2492 : HeapTuple tuple;
2493 : int noldmembers;
2494 : int nnewmembers;
2495 : Oid *oldmembers;
2496 : Oid *newmembers;
2497 :
2498 136 : tuple = SearchSysCache1(PARAMETERACLOID, ObjectIdGetDatum(parameterId));
2499 136 : if (!HeapTupleIsValid(tuple))
2500 0 : elog(ERROR, "cache lookup failed for parameter ACL %u",
2501 : parameterId);
2502 :
2503 : /* We'll need the GUC's name */
2504 136 : nameDatum = SysCacheGetAttrNotNull(PARAMETERACLOID, tuple,
2505 : Anum_pg_parameter_acl_parname);
2506 136 : parname = TextDatumGetCString(nameDatum);
2507 :
2508 : /* Treat all parameters as belonging to the bootstrap superuser. */
2509 136 : ownerId = BOOTSTRAP_SUPERUSERID;
2510 :
2511 : /*
2512 : * Get working copy of existing ACL. If there's no ACL, substitute the
2513 : * proper default.
2514 : */
2515 136 : aclDatum = SysCacheGetAttr(PARAMETERACLOID, tuple,
2516 : Anum_pg_parameter_acl_paracl,
2517 : &isNull);
2518 :
2519 136 : if (isNull)
2520 : {
2521 66 : old_acl = acldefault(istmt->objtype, ownerId);
2522 : /* There are no old member roles according to the catalogs */
2523 66 : noldmembers = 0;
2524 66 : oldmembers = NULL;
2525 : }
2526 : else
2527 : {
2528 70 : old_acl = DatumGetAclPCopy(aclDatum);
2529 : /* Get the roles mentioned in the existing ACL */
2530 70 : noldmembers = aclmembers(old_acl, &oldmembers);
2531 : }
2532 :
2533 : /* Determine ID to do the grant as, and available grant options */
2534 136 : select_best_grantor(GetUserId(), istmt->privileges,
2535 : old_acl, ownerId,
2536 : &grantorId, &avail_goptions);
2537 :
2538 : /*
2539 : * Restrict the privileges to what we can actually grant, and emit the
2540 : * standards-mandated warning and error messages.
2541 : */
2542 : this_privileges =
2543 136 : restrict_and_check_grant(istmt->is_grant, avail_goptions,
2544 136 : istmt->all_privs, istmt->privileges,
2545 : parameterId, grantorId,
2546 : OBJECT_PARAMETER_ACL,
2547 : parname,
2548 : 0, NULL);
2549 :
2550 : /*
2551 : * Generate new ACL.
2552 : */
2553 136 : new_acl = merge_acl_with_grant(old_acl, istmt->is_grant,
2554 136 : istmt->grant_option, istmt->behavior,
2555 : istmt->grantees, this_privileges,
2556 : grantorId, ownerId);
2557 :
2558 : /*
2559 : * We need the members of both old and new ACLs so we can correct the
2560 : * shared dependency information.
2561 : */
2562 136 : nnewmembers = aclmembers(new_acl, &newmembers);
2563 :
2564 : /*
2565 : * If the new ACL is equal to the default, we don't need the catalog
2566 : * entry any longer. Delete it rather than updating it, to avoid
2567 : * leaving a degenerate entry.
2568 : */
2569 136 : if (aclequal(new_acl, acldefault(istmt->objtype, ownerId)))
2570 : {
2571 60 : CatalogTupleDelete(relation, &tuple->t_self);
2572 : }
2573 : else
2574 : {
2575 : /* finished building new ACL value, now insert it */
2576 : HeapTuple newtuple;
2577 76 : Datum values[Natts_pg_parameter_acl] = {0};
2578 76 : bool nulls[Natts_pg_parameter_acl] = {0};
2579 76 : bool replaces[Natts_pg_parameter_acl] = {0};
2580 :
2581 76 : replaces[Anum_pg_parameter_acl_paracl - 1] = true;
2582 76 : values[Anum_pg_parameter_acl_paracl - 1] = PointerGetDatum(new_acl);
2583 :
2584 76 : newtuple = heap_modify_tuple(tuple, RelationGetDescr(relation),
2585 : values, nulls, replaces);
2586 :
2587 76 : CatalogTupleUpdate(relation, &newtuple->t_self, newtuple);
2588 : }
2589 :
2590 : /* Update initial privileges for extensions */
2591 136 : recordExtensionInitPriv(parameterId, ParameterAclRelationId, 0,
2592 : ownerId, new_acl);
2593 :
2594 : /* Update the shared dependency ACL info */
2595 136 : updateAclDependencies(ParameterAclRelationId, parameterId, 0,
2596 : ownerId,
2597 : noldmembers, oldmembers,
2598 : nnewmembers, newmembers);
2599 :
2600 136 : ReleaseSysCache(tuple);
2601 136 : pfree(new_acl);
2602 :
2603 : /* prevent error when processing duplicate objects */
2604 136 : CommandCounterIncrement();
2605 : }
2606 :
2607 98 : table_close(relation, RowExclusiveLock);
2608 98 : }
2609 :
2610 :
2611 : static AclMode
2612 13830 : string_to_privilege(const char *privname)
2613 : {
2614 13830 : if (strcmp(privname, "insert") == 0)
2615 222 : return ACL_INSERT;
2616 13608 : if (strcmp(privname, "select") == 0)
2617 5914 : return ACL_SELECT;
2618 7694 : if (strcmp(privname, "update") == 0)
2619 322 : return ACL_UPDATE;
2620 7372 : if (strcmp(privname, "delete") == 0)
2621 114 : return ACL_DELETE;
2622 7258 : if (strcmp(privname, "truncate") == 0)
2623 34 : return ACL_TRUNCATE;
2624 7224 : if (strcmp(privname, "references") == 0)
2625 14 : return ACL_REFERENCES;
2626 7210 : if (strcmp(privname, "trigger") == 0)
2627 8 : return ACL_TRIGGER;
2628 7202 : if (strcmp(privname, "execute") == 0)
2629 6072 : return ACL_EXECUTE;
2630 1130 : if (strcmp(privname, "usage") == 0)
2631 602 : return ACL_USAGE;
2632 528 : if (strcmp(privname, "create") == 0)
2633 250 : return ACL_CREATE;
2634 278 : if (strcmp(privname, "temporary") == 0)
2635 158 : return ACL_CREATE_TEMP;
2636 120 : if (strcmp(privname, "temp") == 0)
2637 0 : return ACL_CREATE_TEMP;
2638 120 : if (strcmp(privname, "connect") == 0)
2639 14 : return ACL_CONNECT;
2640 106 : if (strcmp(privname, "set") == 0)
2641 50 : return ACL_SET;
2642 56 : if (strcmp(privname, "alter system") == 0)
2643 24 : return ACL_ALTER_SYSTEM;
2644 32 : if (strcmp(privname, "maintain") == 0)
2645 32 : return ACL_MAINTAIN;
2646 0 : if (strcmp(privname, "rule") == 0)
2647 0 : return 0; /* ignore old RULE privileges */
2648 0 : ereport(ERROR,
2649 : (errcode(ERRCODE_SYNTAX_ERROR),
2650 : errmsg("unrecognized privilege type \"%s\"", privname)));
2651 : return 0; /* appease compiler */
2652 : }
2653 :
2654 : static const char *
2655 24 : privilege_to_string(AclMode privilege)
2656 : {
2657 24 : switch (privilege)
2658 : {
2659 6 : case ACL_INSERT:
2660 6 : return "INSERT";
2661 0 : case ACL_SELECT:
2662 0 : return "SELECT";
2663 0 : case ACL_UPDATE:
2664 0 : return "UPDATE";
2665 0 : case ACL_DELETE:
2666 0 : return "DELETE";
2667 0 : case ACL_TRUNCATE:
2668 0 : return "TRUNCATE";
2669 0 : case ACL_REFERENCES:
2670 0 : return "REFERENCES";
2671 0 : case ACL_TRIGGER:
2672 0 : return "TRIGGER";
2673 0 : case ACL_EXECUTE:
2674 0 : return "EXECUTE";
2675 18 : case ACL_USAGE:
2676 18 : return "USAGE";
2677 0 : case ACL_CREATE:
2678 0 : return "CREATE";
2679 0 : case ACL_CREATE_TEMP:
2680 0 : return "TEMP";
2681 0 : case ACL_CONNECT:
2682 0 : return "CONNECT";
2683 0 : case ACL_SET:
2684 0 : return "SET";
2685 0 : case ACL_ALTER_SYSTEM:
2686 0 : return "ALTER SYSTEM";
2687 0 : case ACL_MAINTAIN:
2688 0 : return "MAINTAIN";
2689 0 : default:
2690 0 : elog(ERROR, "unrecognized privilege: %d", (int) privilege);
2691 : }
2692 : return NULL; /* appease compiler */
2693 : }
2694 :
2695 : /*
2696 : * Standardized reporting of aclcheck permissions failures.
2697 : *
2698 : * Note: we do not double-quote the %s's below, because many callers
2699 : * supply strings that might be already quoted.
2700 : */
2701 : void
2702 2608 : aclcheck_error(AclResult aclerr, ObjectType objtype,
2703 : const char *objectname)
2704 : {
2705 2608 : switch (aclerr)
2706 : {
2707 0 : case ACLCHECK_OK:
2708 : /* no error, so return to caller */
2709 0 : break;
2710 2094 : case ACLCHECK_NO_PRIV:
2711 : {
2712 2094 : const char *msg = "???";
2713 :
2714 : switch (objtype)
2715 : {
2716 6 : case OBJECT_AGGREGATE:
2717 6 : msg = gettext_noop("permission denied for aggregate %s");
2718 6 : break;
2719 0 : case OBJECT_COLLATION:
2720 0 : msg = gettext_noop("permission denied for collation %s");
2721 0 : break;
2722 0 : case OBJECT_COLUMN:
2723 0 : msg = gettext_noop("permission denied for column %s");
2724 0 : break;
2725 0 : case OBJECT_CONVERSION:
2726 0 : msg = gettext_noop("permission denied for conversion %s");
2727 0 : break;
2728 18 : case OBJECT_DATABASE:
2729 18 : msg = gettext_noop("permission denied for database %s");
2730 18 : break;
2731 0 : case OBJECT_DOMAIN:
2732 0 : msg = gettext_noop("permission denied for domain %s");
2733 0 : break;
2734 0 : case OBJECT_EVENT_TRIGGER:
2735 0 : msg = gettext_noop("permission denied for event trigger %s");
2736 0 : break;
2737 0 : case OBJECT_EXTENSION:
2738 0 : msg = gettext_noop("permission denied for extension %s");
2739 0 : break;
2740 44 : case OBJECT_FDW:
2741 44 : msg = gettext_noop("permission denied for foreign-data wrapper %s");
2742 44 : break;
2743 20 : case OBJECT_FOREIGN_SERVER:
2744 20 : msg = gettext_noop("permission denied for foreign server %s");
2745 20 : break;
2746 2 : case OBJECT_FOREIGN_TABLE:
2747 2 : msg = gettext_noop("permission denied for foreign table %s");
2748 2 : break;
2749 90 : case OBJECT_FUNCTION:
2750 90 : msg = gettext_noop("permission denied for function %s");
2751 90 : break;
2752 12 : case OBJECT_INDEX:
2753 12 : msg = gettext_noop("permission denied for index %s");
2754 12 : break;
2755 8 : case OBJECT_LANGUAGE:
2756 8 : msg = gettext_noop("permission denied for language %s");
2757 8 : break;
2758 0 : case OBJECT_LARGEOBJECT:
2759 0 : msg = gettext_noop("permission denied for large object %s");
2760 0 : break;
2761 6 : case OBJECT_MATVIEW:
2762 6 : msg = gettext_noop("permission denied for materialized view %s");
2763 6 : break;
2764 0 : case OBJECT_OPCLASS:
2765 0 : msg = gettext_noop("permission denied for operator class %s");
2766 0 : break;
2767 0 : case OBJECT_OPERATOR:
2768 0 : msg = gettext_noop("permission denied for operator %s");
2769 0 : break;
2770 0 : case OBJECT_OPFAMILY:
2771 0 : msg = gettext_noop("permission denied for operator family %s");
2772 0 : break;
2773 0 : case OBJECT_PARAMETER_ACL:
2774 0 : msg = gettext_noop("permission denied for parameter %s");
2775 0 : break;
2776 0 : case OBJECT_POLICY:
2777 0 : msg = gettext_noop("permission denied for policy %s");
2778 0 : break;
2779 12 : case OBJECT_PROCEDURE:
2780 12 : msg = gettext_noop("permission denied for procedure %s");
2781 12 : break;
2782 0 : case OBJECT_PUBLICATION:
2783 0 : msg = gettext_noop("permission denied for publication %s");
2784 0 : break;
2785 0 : case OBJECT_ROUTINE:
2786 0 : msg = gettext_noop("permission denied for routine %s");
2787 0 : break;
2788 14 : case OBJECT_SCHEMA:
2789 14 : msg = gettext_noop("permission denied for schema %s");
2790 14 : break;
2791 0 : case OBJECT_SEQUENCE:
2792 0 : msg = gettext_noop("permission denied for sequence %s");
2793 0 : break;
2794 0 : case OBJECT_STATISTIC_EXT:
2795 0 : msg = gettext_noop("permission denied for statistics object %s");
2796 0 : break;
2797 0 : case OBJECT_SUBSCRIPTION:
2798 0 : msg = gettext_noop("permission denied for subscription %s");
2799 0 : break;
2800 1338 : case OBJECT_TABLE:
2801 1338 : msg = gettext_noop("permission denied for table %s");
2802 1338 : break;
2803 18 : case OBJECT_TABLESPACE:
2804 18 : msg = gettext_noop("permission denied for tablespace %s");
2805 18 : break;
2806 0 : case OBJECT_TSCONFIGURATION:
2807 0 : msg = gettext_noop("permission denied for text search configuration %s");
2808 0 : break;
2809 0 : case OBJECT_TSDICTIONARY:
2810 0 : msg = gettext_noop("permission denied for text search dictionary %s");
2811 0 : break;
2812 120 : case OBJECT_TYPE:
2813 120 : msg = gettext_noop("permission denied for type %s");
2814 120 : break;
2815 386 : case OBJECT_VIEW:
2816 386 : msg = gettext_noop("permission denied for view %s");
2817 386 : break;
2818 : /* these currently aren't used */
2819 0 : case OBJECT_ACCESS_METHOD:
2820 : case OBJECT_AMOP:
2821 : case OBJECT_AMPROC:
2822 : case OBJECT_ATTRIBUTE:
2823 : case OBJECT_CAST:
2824 : case OBJECT_DEFAULT:
2825 : case OBJECT_DEFACL:
2826 : case OBJECT_DOMCONSTRAINT:
2827 : case OBJECT_PUBLICATION_NAMESPACE:
2828 : case OBJECT_PUBLICATION_REL:
2829 : case OBJECT_ROLE:
2830 : case OBJECT_RULE:
2831 : case OBJECT_TABCONSTRAINT:
2832 : case OBJECT_TRANSFORM:
2833 : case OBJECT_TRIGGER:
2834 : case OBJECT_TSPARSER:
2835 : case OBJECT_TSTEMPLATE:
2836 : case OBJECT_USER_MAPPING:
2837 0 : elog(ERROR, "unsupported object type: %d", objtype);
2838 : }
2839 :
2840 2094 : ereport(ERROR,
2841 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2842 : errmsg(msg, objectname)));
2843 : break;
2844 : }
2845 514 : case ACLCHECK_NOT_OWNER:
2846 : {
2847 514 : const char *msg = "???";
2848 :
2849 : switch (objtype)
2850 : {
2851 6 : case OBJECT_AGGREGATE:
2852 6 : msg = gettext_noop("must be owner of aggregate %s");
2853 6 : break;
2854 0 : case OBJECT_COLLATION:
2855 0 : msg = gettext_noop("must be owner of collation %s");
2856 0 : break;
2857 18 : case OBJECT_CONVERSION:
2858 18 : msg = gettext_noop("must be owner of conversion %s");
2859 18 : break;
2860 0 : case OBJECT_DATABASE:
2861 0 : msg = gettext_noop("must be owner of database %s");
2862 0 : break;
2863 0 : case OBJECT_DOMAIN:
2864 0 : msg = gettext_noop("must be owner of domain %s");
2865 0 : break;
2866 0 : case OBJECT_EVENT_TRIGGER:
2867 0 : msg = gettext_noop("must be owner of event trigger %s");
2868 0 : break;
2869 0 : case OBJECT_EXTENSION:
2870 0 : msg = gettext_noop("must be owner of extension %s");
2871 0 : break;
2872 18 : case OBJECT_FDW:
2873 18 : msg = gettext_noop("must be owner of foreign-data wrapper %s");
2874 18 : break;
2875 114 : case OBJECT_FOREIGN_SERVER:
2876 114 : msg = gettext_noop("must be owner of foreign server %s");
2877 114 : break;
2878 0 : case OBJECT_FOREIGN_TABLE:
2879 0 : msg = gettext_noop("must be owner of foreign table %s");
2880 0 : break;
2881 42 : case OBJECT_FUNCTION:
2882 42 : msg = gettext_noop("must be owner of function %s");
2883 42 : break;
2884 24 : case OBJECT_INDEX:
2885 24 : msg = gettext_noop("must be owner of index %s");
2886 24 : break;
2887 12 : case OBJECT_LANGUAGE:
2888 12 : msg = gettext_noop("must be owner of language %s");
2889 12 : break;
2890 0 : case OBJECT_LARGEOBJECT:
2891 0 : msg = gettext_noop("must be owner of large object %s");
2892 0 : break;
2893 0 : case OBJECT_MATVIEW:
2894 0 : msg = gettext_noop("must be owner of materialized view %s");
2895 0 : break;
2896 18 : case OBJECT_OPCLASS:
2897 18 : msg = gettext_noop("must be owner of operator class %s");
2898 18 : break;
2899 18 : case OBJECT_OPERATOR:
2900 18 : msg = gettext_noop("must be owner of operator %s");
2901 18 : break;
2902 18 : case OBJECT_OPFAMILY:
2903 18 : msg = gettext_noop("must be owner of operator family %s");
2904 18 : break;
2905 6 : case OBJECT_PROCEDURE:
2906 6 : msg = gettext_noop("must be owner of procedure %s");
2907 6 : break;
2908 6 : case OBJECT_PUBLICATION:
2909 6 : msg = gettext_noop("must be owner of publication %s");
2910 6 : break;
2911 0 : case OBJECT_ROUTINE:
2912 0 : msg = gettext_noop("must be owner of routine %s");
2913 0 : break;
2914 6 : case OBJECT_SEQUENCE:
2915 6 : msg = gettext_noop("must be owner of sequence %s");
2916 6 : break;
2917 6 : case OBJECT_SUBSCRIPTION:
2918 6 : msg = gettext_noop("must be owner of subscription %s");
2919 6 : break;
2920 70 : case OBJECT_TABLE:
2921 70 : msg = gettext_noop("must be owner of table %s");
2922 70 : break;
2923 6 : case OBJECT_TYPE:
2924 6 : msg = gettext_noop("must be owner of type %s");
2925 6 : break;
2926 18 : case OBJECT_VIEW:
2927 18 : msg = gettext_noop("must be owner of view %s");
2928 18 : break;
2929 18 : case OBJECT_SCHEMA:
2930 18 : msg = gettext_noop("must be owner of schema %s");
2931 18 : break;
2932 36 : case OBJECT_STATISTIC_EXT:
2933 36 : msg = gettext_noop("must be owner of statistics object %s");
2934 36 : break;
2935 0 : case OBJECT_TABLESPACE:
2936 0 : msg = gettext_noop("must be owner of tablespace %s");
2937 0 : break;
2938 18 : case OBJECT_TSCONFIGURATION:
2939 18 : msg = gettext_noop("must be owner of text search configuration %s");
2940 18 : break;
2941 18 : case OBJECT_TSDICTIONARY:
2942 18 : msg = gettext_noop("must be owner of text search dictionary %s");
2943 18 : break;
2944 :
2945 : /*
2946 : * Special cases: For these, the error message talks
2947 : * about "relation", because that's where the
2948 : * ownership is attached. See also
2949 : * check_object_ownership().
2950 : */
2951 18 : case OBJECT_COLUMN:
2952 : case OBJECT_POLICY:
2953 : case OBJECT_RULE:
2954 : case OBJECT_TABCONSTRAINT:
2955 : case OBJECT_TRIGGER:
2956 18 : msg = gettext_noop("must be owner of relation %s");
2957 18 : break;
2958 : /* these currently aren't used */
2959 0 : case OBJECT_ACCESS_METHOD:
2960 : case OBJECT_AMOP:
2961 : case OBJECT_AMPROC:
2962 : case OBJECT_ATTRIBUTE:
2963 : case OBJECT_CAST:
2964 : case OBJECT_DEFAULT:
2965 : case OBJECT_DEFACL:
2966 : case OBJECT_DOMCONSTRAINT:
2967 : case OBJECT_PARAMETER_ACL:
2968 : case OBJECT_PUBLICATION_NAMESPACE:
2969 : case OBJECT_PUBLICATION_REL:
2970 : case OBJECT_ROLE:
2971 : case OBJECT_TRANSFORM:
2972 : case OBJECT_TSPARSER:
2973 : case OBJECT_TSTEMPLATE:
2974 : case OBJECT_USER_MAPPING:
2975 0 : elog(ERROR, "unsupported object type: %d", objtype);
2976 : }
2977 :
2978 514 : ereport(ERROR,
2979 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
2980 : errmsg(msg, objectname)));
2981 : break;
2982 : }
2983 0 : default:
2984 0 : elog(ERROR, "unrecognized AclResult: %d", (int) aclerr);
2985 : break;
2986 : }
2987 0 : }
2988 :
2989 :
2990 : void
2991 0 : aclcheck_error_col(AclResult aclerr, ObjectType objtype,
2992 : const char *objectname, const char *colname)
2993 : {
2994 0 : switch (aclerr)
2995 : {
2996 0 : case ACLCHECK_OK:
2997 : /* no error, so return to caller */
2998 0 : break;
2999 0 : case ACLCHECK_NO_PRIV:
3000 0 : ereport(ERROR,
3001 : (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
3002 : errmsg("permission denied for column \"%s\" of relation \"%s\"",
3003 : colname, objectname)));
3004 : break;
3005 0 : case ACLCHECK_NOT_OWNER:
3006 : /* relation msg is OK since columns don't have separate owners */
3007 0 : aclcheck_error(aclerr, objtype, objectname);
3008 0 : break;
3009 0 : default:
3010 0 : elog(ERROR, "unrecognized AclResult: %d", (int) aclerr);
3011 : break;
3012 : }
3013 0 : }
3014 :
3015 :
3016 : /*
3017 : * Special common handling for types: use element type instead of array type,
3018 : * and format nicely
3019 : */
3020 : void
3021 120 : aclcheck_error_type(AclResult aclerr, Oid typeOid)
3022 : {
3023 120 : Oid element_type = get_element_type(typeOid);
3024 :
3025 120 : aclcheck_error(aclerr, OBJECT_TYPE, format_type_be(element_type ? element_type : typeOid));
3026 0 : }
3027 :
3028 :
3029 : /*
3030 : * Relay for the various pg_*_mask routines depending on object kind
3031 : */
3032 : static AclMode
3033 66 : pg_aclmask(ObjectType objtype, Oid object_oid, AttrNumber attnum, Oid roleid,
3034 : AclMode mask, AclMaskHow how)
3035 : {
3036 66 : switch (objtype)
3037 : {
3038 0 : case OBJECT_COLUMN:
3039 : return
3040 0 : pg_class_aclmask(object_oid, roleid, mask, how) |
3041 0 : pg_attribute_aclmask(object_oid, attnum, roleid, mask, how);
3042 12 : case OBJECT_TABLE:
3043 : case OBJECT_SEQUENCE:
3044 12 : return pg_class_aclmask(object_oid, roleid, mask, how);
3045 0 : case OBJECT_DATABASE:
3046 0 : return object_aclmask(DatabaseRelationId, object_oid, roleid, mask, how);
3047 0 : case OBJECT_FUNCTION:
3048 0 : return object_aclmask(ProcedureRelationId, object_oid, roleid, mask, how);
3049 6 : case OBJECT_LANGUAGE:
3050 6 : return object_aclmask(LanguageRelationId, object_oid, roleid, mask, how);
3051 0 : case OBJECT_LARGEOBJECT:
3052 0 : return pg_largeobject_aclmask_snapshot(object_oid, roleid,
3053 : mask, how, NULL);
3054 0 : case OBJECT_PARAMETER_ACL:
3055 0 : return pg_parameter_acl_aclmask(object_oid, roleid, mask, how);
3056 0 : case OBJECT_SCHEMA:
3057 0 : return object_aclmask(NamespaceRelationId, object_oid, roleid, mask, how);
3058 0 : case OBJECT_STATISTIC_EXT:
3059 0 : elog(ERROR, "grantable rights not supported for statistics objects");
3060 : /* not reached, but keep compiler quiet */
3061 : return ACL_NO_RIGHTS;
3062 0 : case OBJECT_TABLESPACE:
3063 0 : return object_aclmask(TableSpaceRelationId, object_oid, roleid, mask, how);
3064 18 : case OBJECT_FDW:
3065 18 : return object_aclmask(ForeignDataWrapperRelationId, object_oid, roleid, mask, how);
3066 18 : case OBJECT_FOREIGN_SERVER:
3067 18 : return object_aclmask(ForeignServerRelationId, object_oid, roleid, mask, how);
3068 0 : case OBJECT_EVENT_TRIGGER:
3069 0 : elog(ERROR, "grantable rights not supported for event triggers");
3070 : /* not reached, but keep compiler quiet */
3071 : return ACL_NO_RIGHTS;
3072 12 : case OBJECT_TYPE:
3073 12 : return object_aclmask(TypeRelationId, object_oid, roleid, mask, how);
3074 0 : default:
3075 0 : elog(ERROR, "unrecognized object type: %d",
3076 : (int) objtype);
3077 : /* not reached, but keep compiler quiet */
3078 : return ACL_NO_RIGHTS;
3079 : }
3080 : }
3081 :
3082 :
3083 : /* ****************************************************************
3084 : * Exported routines for examining a user's privileges for various objects
3085 : *
3086 : * See aclmask() for a description of the common API for these functions.
3087 : *
3088 : * Note: we give lookup failure the full ereport treatment because the
3089 : * has_xxx_privilege() family of functions allow users to pass any random
3090 : * OID to these functions.
3091 : * ****************************************************************
3092 : */
3093 :
3094 : /*
3095 : * Generic routine for examining a user's privileges for an object
3096 : */
3097 : static AclMode
3098 54 : object_aclmask(Oid classid, Oid objectid, Oid roleid,
3099 : AclMode mask, AclMaskHow how)
3100 : {
3101 54 : return object_aclmask_ext(classid, objectid, roleid, mask, how, NULL);
3102 : }
3103 :
3104 : /*
3105 : * Generic routine for examining a user's privileges for an object,
3106 : * with is_missing
3107 : */
3108 : static AclMode
3109 2861948 : object_aclmask_ext(Oid classid, Oid objectid, Oid roleid,
3110 : AclMode mask, AclMaskHow how,
3111 : bool *is_missing)
3112 : {
3113 : int cacheid;
3114 : AclMode result;
3115 : HeapTuple tuple;
3116 : Datum aclDatum;
3117 : bool isNull;
3118 : Acl *acl;
3119 : Oid ownerId;
3120 :
3121 : /* Special cases */
3122 2861948 : switch (classid)
3123 : {
3124 806314 : case NamespaceRelationId:
3125 806314 : return pg_namespace_aclmask_ext(objectid, roleid, mask, how,
3126 : is_missing);
3127 291022 : case TypeRelationId:
3128 291022 : return pg_type_aclmask_ext(objectid, roleid, mask, how,
3129 : is_missing);
3130 : }
3131 :
3132 : /* Even more special cases */
3133 : Assert(classid != RelationRelationId); /* should use pg_class_acl* */
3134 : Assert(classid != LargeObjectMetadataRelationId); /* should use
3135 : * pg_largeobject_acl* */
3136 :
3137 : /* Superusers bypass all permission checking. */
3138 1764612 : if (superuser_arg(roleid))
3139 1726350 : return mask;
3140 :
3141 : /*
3142 : * Get the object's ACL from its catalog
3143 : */
3144 :
3145 38262 : cacheid = get_object_catcache_oid(classid);
3146 :
3147 38262 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
3148 38262 : if (!HeapTupleIsValid(tuple))
3149 : {
3150 0 : if (is_missing != NULL)
3151 : {
3152 : /* return "no privileges" instead of throwing an error */
3153 0 : *is_missing = true;
3154 0 : return 0;
3155 : }
3156 : else
3157 0 : ereport(ERROR,
3158 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3159 : errmsg("%s with OID %u does not exist",
3160 : get_object_class_descr(classid), objectid)));
3161 : }
3162 :
3163 38262 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
3164 : tuple,
3165 38262 : get_object_attnum_owner(classid)));
3166 :
3167 38262 : aclDatum = SysCacheGetAttr(cacheid, tuple, get_object_attnum_acl(classid),
3168 : &isNull);
3169 38262 : if (isNull)
3170 : {
3171 : /* No ACL, so build default ACL */
3172 35768 : acl = acldefault(get_object_type(classid, objectid), ownerId);
3173 35768 : aclDatum = (Datum) 0;
3174 : }
3175 : else
3176 : {
3177 : /* detoast ACL if necessary */
3178 2494 : acl = DatumGetAclP(aclDatum);
3179 : }
3180 :
3181 38262 : result = aclmask(acl, roleid, ownerId, mask, how);
3182 :
3183 : /* if we have a detoasted copy, free it */
3184 38262 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3185 38262 : pfree(acl);
3186 :
3187 38262 : ReleaseSysCache(tuple);
3188 :
3189 38262 : return result;
3190 : }
3191 :
3192 : /*
3193 : * Routine for examining a user's privileges for a column
3194 : *
3195 : * Note: this considers only privileges granted specifically on the column.
3196 : * It is caller's responsibility to take relation-level privileges into account
3197 : * as appropriate. (For the same reason, we have no special case for
3198 : * superuser-ness here.)
3199 : */
3200 : static AclMode
3201 0 : pg_attribute_aclmask(Oid table_oid, AttrNumber attnum, Oid roleid,
3202 : AclMode mask, AclMaskHow how)
3203 : {
3204 0 : return pg_attribute_aclmask_ext(table_oid, attnum, roleid,
3205 : mask, how, NULL);
3206 : }
3207 :
3208 : /*
3209 : * Routine for examining a user's privileges for a column, with is_missing
3210 : */
3211 : static AclMode
3212 5270 : pg_attribute_aclmask_ext(Oid table_oid, AttrNumber attnum, Oid roleid,
3213 : AclMode mask, AclMaskHow how, bool *is_missing)
3214 : {
3215 : AclMode result;
3216 : HeapTuple classTuple;
3217 : HeapTuple attTuple;
3218 : Form_pg_class classForm;
3219 : Form_pg_attribute attributeForm;
3220 : Datum aclDatum;
3221 : bool isNull;
3222 : Acl *acl;
3223 : Oid ownerId;
3224 :
3225 : /*
3226 : * First, get the column's ACL from its pg_attribute entry
3227 : */
3228 5270 : attTuple = SearchSysCache2(ATTNUM,
3229 : ObjectIdGetDatum(table_oid),
3230 : Int16GetDatum(attnum));
3231 5270 : if (!HeapTupleIsValid(attTuple))
3232 : {
3233 30 : if (is_missing != NULL)
3234 : {
3235 : /* return "no privileges" instead of throwing an error */
3236 30 : *is_missing = true;
3237 30 : return 0;
3238 : }
3239 : else
3240 0 : ereport(ERROR,
3241 : (errcode(ERRCODE_UNDEFINED_COLUMN),
3242 : errmsg("attribute %d of relation with OID %u does not exist",
3243 : attnum, table_oid)));
3244 : }
3245 :
3246 5240 : attributeForm = (Form_pg_attribute) GETSTRUCT(attTuple);
3247 :
3248 : /* Check dropped columns, too */
3249 5240 : if (attributeForm->attisdropped)
3250 : {
3251 12 : if (is_missing != NULL)
3252 : {
3253 : /* return "no privileges" instead of throwing an error */
3254 12 : *is_missing = true;
3255 12 : ReleaseSysCache(attTuple);
3256 12 : return 0;
3257 : }
3258 : else
3259 0 : ereport(ERROR,
3260 : (errcode(ERRCODE_UNDEFINED_COLUMN),
3261 : errmsg("attribute %d of relation with OID %u does not exist",
3262 : attnum, table_oid)));
3263 : }
3264 :
3265 5228 : aclDatum = SysCacheGetAttr(ATTNUM, attTuple, Anum_pg_attribute_attacl,
3266 : &isNull);
3267 :
3268 : /*
3269 : * Here we hard-wire knowledge that the default ACL for a column grants no
3270 : * privileges, so that we can fall out quickly in the very common case
3271 : * where attacl is null.
3272 : */
3273 5228 : if (isNull)
3274 : {
3275 2734 : ReleaseSysCache(attTuple);
3276 2734 : return 0;
3277 : }
3278 :
3279 : /*
3280 : * Must get the relation's ownerId from pg_class. Since we already found
3281 : * a pg_attribute entry, the only likely reason for this to fail is that a
3282 : * concurrent DROP of the relation committed since then (which could only
3283 : * happen if we don't have lock on the relation). Treat that similarly to
3284 : * not finding the attribute entry.
3285 : */
3286 2494 : classTuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
3287 2494 : if (!HeapTupleIsValid(classTuple))
3288 : {
3289 0 : ReleaseSysCache(attTuple);
3290 0 : if (is_missing != NULL)
3291 : {
3292 : /* return "no privileges" instead of throwing an error */
3293 0 : *is_missing = true;
3294 0 : return 0;
3295 : }
3296 : else
3297 0 : ereport(ERROR,
3298 : (errcode(ERRCODE_UNDEFINED_TABLE),
3299 : errmsg("relation with OID %u does not exist",
3300 : table_oid)));
3301 : }
3302 2494 : classForm = (Form_pg_class) GETSTRUCT(classTuple);
3303 :
3304 2494 : ownerId = classForm->relowner;
3305 :
3306 2494 : ReleaseSysCache(classTuple);
3307 :
3308 : /* detoast column's ACL if necessary */
3309 2494 : acl = DatumGetAclP(aclDatum);
3310 :
3311 2494 : result = aclmask(acl, roleid, ownerId, mask, how);
3312 :
3313 : /* if we have a detoasted copy, free it */
3314 2494 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3315 2494 : pfree(acl);
3316 :
3317 2494 : ReleaseSysCache(attTuple);
3318 :
3319 2494 : return result;
3320 : }
3321 :
3322 : /*
3323 : * Exported routine for examining a user's privileges for a table
3324 : */
3325 : AclMode
3326 500770 : pg_class_aclmask(Oid table_oid, Oid roleid,
3327 : AclMode mask, AclMaskHow how)
3328 : {
3329 500770 : return pg_class_aclmask_ext(table_oid, roleid, mask, how, NULL);
3330 : }
3331 :
3332 : /*
3333 : * Routine for examining a user's privileges for a table, with is_missing
3334 : */
3335 : static AclMode
3336 2401630 : pg_class_aclmask_ext(Oid table_oid, Oid roleid, AclMode mask,
3337 : AclMaskHow how, bool *is_missing)
3338 : {
3339 : AclMode result;
3340 : HeapTuple tuple;
3341 : Form_pg_class classForm;
3342 : Datum aclDatum;
3343 : bool isNull;
3344 : Acl *acl;
3345 : Oid ownerId;
3346 :
3347 : /*
3348 : * Must get the relation's tuple from pg_class
3349 : */
3350 2401630 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
3351 2401630 : if (!HeapTupleIsValid(tuple))
3352 : {
3353 8 : if (is_missing != NULL)
3354 : {
3355 : /* return "no privileges" instead of throwing an error */
3356 8 : *is_missing = true;
3357 8 : return 0;
3358 : }
3359 : else
3360 0 : ereport(ERROR,
3361 : (errcode(ERRCODE_UNDEFINED_TABLE),
3362 : errmsg("relation with OID %u does not exist",
3363 : table_oid)));
3364 : }
3365 :
3366 2401622 : classForm = (Form_pg_class) GETSTRUCT(tuple);
3367 :
3368 : /*
3369 : * Deny anyone permission to update a system catalog unless
3370 : * pg_authid.rolsuper is set.
3371 : *
3372 : * As of 7.4 we have some updatable system views; those shouldn't be
3373 : * protected in this way. Assume the view rules can take care of
3374 : * themselves. ACL_USAGE is if we ever have system sequences.
3375 : */
3376 3045346 : if ((mask & (ACL_INSERT | ACL_UPDATE | ACL_DELETE | ACL_TRUNCATE | ACL_USAGE)) &&
3377 643724 : IsSystemClass(table_oid, classForm) &&
3378 4542 : classForm->relkind != RELKIND_VIEW &&
3379 4542 : !superuser_arg(roleid))
3380 70 : mask &= ~(ACL_INSERT | ACL_UPDATE | ACL_DELETE | ACL_TRUNCATE | ACL_USAGE);
3381 :
3382 : /*
3383 : * Otherwise, superusers bypass all permission-checking.
3384 : */
3385 2401622 : if (superuser_arg(roleid))
3386 : {
3387 2369262 : ReleaseSysCache(tuple);
3388 2369262 : return mask;
3389 : }
3390 :
3391 : /*
3392 : * Normal case: get the relation's ACL from pg_class
3393 : */
3394 32360 : ownerId = classForm->relowner;
3395 :
3396 32360 : aclDatum = SysCacheGetAttr(RELOID, tuple, Anum_pg_class_relacl,
3397 : &isNull);
3398 32360 : if (isNull)
3399 : {
3400 : /* No ACL, so build default ACL */
3401 5880 : switch (classForm->relkind)
3402 : {
3403 36 : case RELKIND_SEQUENCE:
3404 36 : acl = acldefault(OBJECT_SEQUENCE, ownerId);
3405 36 : break;
3406 5844 : default:
3407 5844 : acl = acldefault(OBJECT_TABLE, ownerId);
3408 5844 : break;
3409 : }
3410 5880 : aclDatum = (Datum) 0;
3411 : }
3412 : else
3413 : {
3414 : /* detoast rel's ACL if necessary */
3415 26480 : acl = DatumGetAclP(aclDatum);
3416 : }
3417 :
3418 32360 : result = aclmask(acl, roleid, ownerId, mask, how);
3419 :
3420 : /* if we have a detoasted copy, free it */
3421 32360 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3422 32360 : pfree(acl);
3423 :
3424 32360 : ReleaseSysCache(tuple);
3425 :
3426 : /*
3427 : * Check if ACL_SELECT is being checked and, if so, and not set already as
3428 : * part of the result, then check if the user is a member of the
3429 : * pg_read_all_data role, which allows read access to all relations.
3430 : */
3431 34306 : if (mask & ACL_SELECT && !(result & ACL_SELECT) &&
3432 1946 : has_privs_of_role(roleid, ROLE_PG_READ_ALL_DATA))
3433 12 : result |= ACL_SELECT;
3434 :
3435 : /*
3436 : * Check if ACL_INSERT, ACL_UPDATE, or ACL_DELETE is being checked and, if
3437 : * so, and not set already as part of the result, then check if the user
3438 : * is a member of the pg_write_all_data role, which allows
3439 : * INSERT/UPDATE/DELETE access to all relations (except system catalogs,
3440 : * which requires superuser, see above).
3441 : */
3442 32360 : if (mask & (ACL_INSERT | ACL_UPDATE | ACL_DELETE) &&
3443 7286 : !(result & (ACL_INSERT | ACL_UPDATE | ACL_DELETE)) &&
3444 1674 : has_privs_of_role(roleid, ROLE_PG_WRITE_ALL_DATA))
3445 18 : result |= (mask & (ACL_INSERT | ACL_UPDATE | ACL_DELETE));
3446 :
3447 : /*
3448 : * Check if ACL_MAINTAIN is being checked and, if so, and not already set
3449 : * as part of the result, then check if the user is a member of the
3450 : * pg_maintain role, which allows VACUUM, ANALYZE, CLUSTER, REFRESH
3451 : * MATERIALIZED VIEW, and REINDEX on all relations.
3452 : */
3453 32360 : if (mask & ACL_MAINTAIN &&
3454 1876 : !(result & ACL_MAINTAIN) &&
3455 668 : has_privs_of_role(roleid, ROLE_PG_MAINTAIN))
3456 66 : result |= ACL_MAINTAIN;
3457 :
3458 32360 : return result;
3459 : }
3460 :
3461 : /*
3462 : * Routine for examining a user's privileges for a configuration
3463 : * parameter (GUC), identified by GUC name.
3464 : */
3465 : static AclMode
3466 160 : pg_parameter_aclmask(const char *name, Oid roleid, AclMode mask, AclMaskHow how)
3467 : {
3468 : AclMode result;
3469 : char *parname;
3470 : text *partext;
3471 : HeapTuple tuple;
3472 :
3473 : /* Superusers bypass all permission checking. */
3474 160 : if (superuser_arg(roleid))
3475 2 : return mask;
3476 :
3477 : /* Convert name to the form it should have in pg_parameter_acl... */
3478 158 : parname = convert_GUC_name_for_parameter_acl(name);
3479 158 : partext = cstring_to_text(parname);
3480 :
3481 : /* ... and look it up */
3482 158 : tuple = SearchSysCache1(PARAMETERACLNAME, PointerGetDatum(partext));
3483 :
3484 158 : if (!HeapTupleIsValid(tuple))
3485 : {
3486 : /* If no entry, GUC has no permissions for non-superusers */
3487 70 : result = ACL_NO_RIGHTS;
3488 : }
3489 : else
3490 : {
3491 : Datum aclDatum;
3492 : bool isNull;
3493 : Acl *acl;
3494 :
3495 88 : aclDatum = SysCacheGetAttr(PARAMETERACLNAME, tuple,
3496 : Anum_pg_parameter_acl_paracl,
3497 : &isNull);
3498 88 : if (isNull)
3499 : {
3500 : /* No ACL, so build default ACL */
3501 0 : acl = acldefault(OBJECT_PARAMETER_ACL, BOOTSTRAP_SUPERUSERID);
3502 0 : aclDatum = (Datum) 0;
3503 : }
3504 : else
3505 : {
3506 : /* detoast ACL if necessary */
3507 88 : acl = DatumGetAclP(aclDatum);
3508 : }
3509 :
3510 88 : result = aclmask(acl, roleid, BOOTSTRAP_SUPERUSERID, mask, how);
3511 :
3512 : /* if we have a detoasted copy, free it */
3513 88 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3514 88 : pfree(acl);
3515 :
3516 88 : ReleaseSysCache(tuple);
3517 : }
3518 :
3519 158 : pfree(parname);
3520 158 : pfree(partext);
3521 :
3522 158 : return result;
3523 : }
3524 :
3525 : /*
3526 : * Routine for examining a user's privileges for a configuration
3527 : * parameter (GUC), identified by the OID of its pg_parameter_acl entry.
3528 : */
3529 : static AclMode
3530 0 : pg_parameter_acl_aclmask(Oid acl_oid, Oid roleid, AclMode mask, AclMaskHow how)
3531 : {
3532 : AclMode result;
3533 : HeapTuple tuple;
3534 : Datum aclDatum;
3535 : bool isNull;
3536 : Acl *acl;
3537 :
3538 : /* Superusers bypass all permission checking. */
3539 0 : if (superuser_arg(roleid))
3540 0 : return mask;
3541 :
3542 : /* Get the ACL from pg_parameter_acl */
3543 0 : tuple = SearchSysCache1(PARAMETERACLOID, ObjectIdGetDatum(acl_oid));
3544 0 : if (!HeapTupleIsValid(tuple))
3545 0 : ereport(ERROR,
3546 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3547 : errmsg("parameter ACL with OID %u does not exist",
3548 : acl_oid)));
3549 :
3550 0 : aclDatum = SysCacheGetAttr(PARAMETERACLOID, tuple,
3551 : Anum_pg_parameter_acl_paracl,
3552 : &isNull);
3553 0 : if (isNull)
3554 : {
3555 : /* No ACL, so build default ACL */
3556 0 : acl = acldefault(OBJECT_PARAMETER_ACL, BOOTSTRAP_SUPERUSERID);
3557 0 : aclDatum = (Datum) 0;
3558 : }
3559 : else
3560 : {
3561 : /* detoast ACL if necessary */
3562 0 : acl = DatumGetAclP(aclDatum);
3563 : }
3564 :
3565 0 : result = aclmask(acl, roleid, BOOTSTRAP_SUPERUSERID, mask, how);
3566 :
3567 : /* if we have a detoasted copy, free it */
3568 0 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3569 0 : pfree(acl);
3570 :
3571 0 : ReleaseSysCache(tuple);
3572 :
3573 0 : return result;
3574 : }
3575 :
3576 : /*
3577 : * Routine for examining a user's privileges for a largeobject
3578 : *
3579 : * When a large object is opened for reading, it is opened relative to the
3580 : * caller's snapshot, but when it is opened for writing, a current
3581 : * MVCC snapshot will be used. See doc/src/sgml/lobj.sgml. This function
3582 : * takes a snapshot argument so that the permissions check can be made
3583 : * relative to the same snapshot that will be used to read the underlying
3584 : * data. The caller will actually pass NULL for an instantaneous MVCC
3585 : * snapshot, since all we do with the snapshot argument is pass it through
3586 : * to systable_beginscan().
3587 : */
3588 : static AclMode
3589 560 : pg_largeobject_aclmask_snapshot(Oid lobj_oid, Oid roleid,
3590 : AclMode mask, AclMaskHow how,
3591 : Snapshot snapshot)
3592 : {
3593 : AclMode result;
3594 : Relation pg_lo_meta;
3595 : ScanKeyData entry[1];
3596 : SysScanDesc scan;
3597 : HeapTuple tuple;
3598 : Datum aclDatum;
3599 : bool isNull;
3600 : Acl *acl;
3601 : Oid ownerId;
3602 :
3603 : /* Superusers bypass all permission checking. */
3604 560 : if (superuser_arg(roleid))
3605 410 : return mask;
3606 :
3607 : /*
3608 : * Get the largeobject's ACL from pg_largeobject_metadata
3609 : */
3610 150 : pg_lo_meta = table_open(LargeObjectMetadataRelationId,
3611 : AccessShareLock);
3612 :
3613 150 : ScanKeyInit(&entry[0],
3614 : Anum_pg_largeobject_metadata_oid,
3615 : BTEqualStrategyNumber, F_OIDEQ,
3616 : ObjectIdGetDatum(lobj_oid));
3617 :
3618 150 : scan = systable_beginscan(pg_lo_meta,
3619 : LargeObjectMetadataOidIndexId, true,
3620 : snapshot, 1, entry);
3621 :
3622 150 : tuple = systable_getnext(scan);
3623 150 : if (!HeapTupleIsValid(tuple))
3624 0 : ereport(ERROR,
3625 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3626 : errmsg("large object %u does not exist", lobj_oid)));
3627 :
3628 150 : ownerId = ((Form_pg_largeobject_metadata) GETSTRUCT(tuple))->lomowner;
3629 :
3630 150 : aclDatum = heap_getattr(tuple, Anum_pg_largeobject_metadata_lomacl,
3631 : RelationGetDescr(pg_lo_meta), &isNull);
3632 :
3633 150 : if (isNull)
3634 : {
3635 : /* No ACL, so build default ACL */
3636 36 : acl = acldefault(OBJECT_LARGEOBJECT, ownerId);
3637 36 : aclDatum = (Datum) 0;
3638 : }
3639 : else
3640 : {
3641 : /* detoast ACL if necessary */
3642 114 : acl = DatumGetAclP(aclDatum);
3643 : }
3644 :
3645 150 : result = aclmask(acl, roleid, ownerId, mask, how);
3646 :
3647 : /* if we have a detoasted copy, free it */
3648 150 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3649 150 : pfree(acl);
3650 :
3651 150 : systable_endscan(scan);
3652 :
3653 150 : table_close(pg_lo_meta, AccessShareLock);
3654 :
3655 150 : return result;
3656 : }
3657 :
3658 : /*
3659 : * Routine for examining a user's privileges for a namespace, with is_missing
3660 : */
3661 : static AclMode
3662 806314 : pg_namespace_aclmask_ext(Oid nsp_oid, Oid roleid,
3663 : AclMode mask, AclMaskHow how,
3664 : bool *is_missing)
3665 : {
3666 : AclMode result;
3667 : HeapTuple tuple;
3668 : Datum aclDatum;
3669 : bool isNull;
3670 : Acl *acl;
3671 : Oid ownerId;
3672 :
3673 : /* Superusers bypass all permission checking. */
3674 806314 : if (superuser_arg(roleid))
3675 790582 : return mask;
3676 :
3677 : /*
3678 : * If we have been assigned this namespace as a temp namespace, check to
3679 : * make sure we have CREATE TEMP permission on the database, and if so act
3680 : * as though we have all standard (but not GRANT OPTION) permissions on
3681 : * the namespace. If we don't have CREATE TEMP, act as though we have
3682 : * only USAGE (and not CREATE) rights.
3683 : *
3684 : * This may seem redundant given the check in InitTempTableNamespace, but
3685 : * it really isn't since current user ID may have changed since then. The
3686 : * upshot of this behavior is that a SECURITY DEFINER function can create
3687 : * temp tables that can then be accessed (if permission is granted) by
3688 : * code in the same session that doesn't have permissions to create temp
3689 : * tables.
3690 : *
3691 : * XXX Would it be safe to ereport a special error message as
3692 : * InitTempTableNamespace does? Returning zero here means we'll get a
3693 : * generic "permission denied for schema pg_temp_N" message, which is not
3694 : * remarkably user-friendly.
3695 : */
3696 15732 : if (isTempNamespace(nsp_oid))
3697 : {
3698 276 : if (object_aclcheck_ext(DatabaseRelationId, MyDatabaseId, roleid,
3699 : ACL_CREATE_TEMP, is_missing) == ACLCHECK_OK)
3700 276 : return mask & ACL_ALL_RIGHTS_SCHEMA;
3701 : else
3702 0 : return mask & ACL_USAGE;
3703 : }
3704 :
3705 : /*
3706 : * Get the schema's ACL from pg_namespace
3707 : */
3708 15456 : tuple = SearchSysCache1(NAMESPACEOID, ObjectIdGetDatum(nsp_oid));
3709 15456 : if (!HeapTupleIsValid(tuple))
3710 : {
3711 0 : if (is_missing != NULL)
3712 : {
3713 : /* return "no privileges" instead of throwing an error */
3714 0 : *is_missing = true;
3715 0 : return 0;
3716 : }
3717 : else
3718 0 : ereport(ERROR,
3719 : (errcode(ERRCODE_UNDEFINED_SCHEMA),
3720 : errmsg("schema with OID %u does not exist", nsp_oid)));
3721 : }
3722 :
3723 15456 : ownerId = ((Form_pg_namespace) GETSTRUCT(tuple))->nspowner;
3724 :
3725 15456 : aclDatum = SysCacheGetAttr(NAMESPACEOID, tuple, Anum_pg_namespace_nspacl,
3726 : &isNull);
3727 15456 : if (isNull)
3728 : {
3729 : /* No ACL, so build default ACL */
3730 276 : acl = acldefault(OBJECT_SCHEMA, ownerId);
3731 276 : aclDatum = (Datum) 0;
3732 : }
3733 : else
3734 : {
3735 : /* detoast ACL if necessary */
3736 15180 : acl = DatumGetAclP(aclDatum);
3737 : }
3738 :
3739 15456 : result = aclmask(acl, roleid, ownerId, mask, how);
3740 :
3741 : /* if we have a detoasted copy, free it */
3742 15456 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3743 15456 : pfree(acl);
3744 :
3745 15456 : ReleaseSysCache(tuple);
3746 :
3747 : /*
3748 : * Check if ACL_USAGE is being checked and, if so, and not set already as
3749 : * part of the result, then check if the user is a member of the
3750 : * pg_read_all_data or pg_write_all_data roles, which allow usage access
3751 : * to all schemas.
3752 : */
3753 15494 : if (mask & ACL_USAGE && !(result & ACL_USAGE) &&
3754 70 : (has_privs_of_role(roleid, ROLE_PG_READ_ALL_DATA) ||
3755 32 : has_privs_of_role(roleid, ROLE_PG_WRITE_ALL_DATA)))
3756 12 : result |= ACL_USAGE;
3757 15456 : return result;
3758 : }
3759 :
3760 : /*
3761 : * Routine for examining a user's privileges for a type, with is_missing
3762 : */
3763 : static AclMode
3764 291022 : pg_type_aclmask_ext(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how,
3765 : bool *is_missing)
3766 : {
3767 : AclMode result;
3768 : HeapTuple tuple;
3769 : Form_pg_type typeForm;
3770 : Datum aclDatum;
3771 : bool isNull;
3772 : Acl *acl;
3773 : Oid ownerId;
3774 :
3775 : /* Bypass permission checks for superusers */
3776 291022 : if (superuser_arg(roleid))
3777 286774 : return mask;
3778 :
3779 : /*
3780 : * Must get the type's tuple from pg_type
3781 : */
3782 4248 : tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(type_oid));
3783 4248 : if (!HeapTupleIsValid(tuple))
3784 : {
3785 0 : if (is_missing != NULL)
3786 : {
3787 : /* return "no privileges" instead of throwing an error */
3788 0 : *is_missing = true;
3789 0 : return 0;
3790 : }
3791 : else
3792 0 : ereport(ERROR,
3793 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3794 : errmsg("type with OID %u does not exist",
3795 : type_oid)));
3796 : }
3797 4248 : typeForm = (Form_pg_type) GETSTRUCT(tuple);
3798 :
3799 : /*
3800 : * "True" array types don't manage permissions of their own; consult the
3801 : * element type instead.
3802 : */
3803 4248 : if (IsTrueArrayType(typeForm))
3804 : {
3805 48 : Oid elttype_oid = typeForm->typelem;
3806 :
3807 48 : ReleaseSysCache(tuple);
3808 :
3809 48 : tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(elttype_oid));
3810 48 : if (!HeapTupleIsValid(tuple))
3811 : {
3812 0 : if (is_missing != NULL)
3813 : {
3814 : /* return "no privileges" instead of throwing an error */
3815 0 : *is_missing = true;
3816 0 : return 0;
3817 : }
3818 : else
3819 0 : ereport(ERROR,
3820 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3821 : errmsg("type with OID %u does not exist",
3822 : elttype_oid)));
3823 : }
3824 48 : typeForm = (Form_pg_type) GETSTRUCT(tuple);
3825 : }
3826 :
3827 : /*
3828 : * Likewise, multirange types don't manage their own permissions; consult
3829 : * the associated range type. (Note we must do this after the array step
3830 : * to get the right answer for arrays of multiranges.)
3831 : */
3832 4248 : if (typeForm->typtype == TYPTYPE_MULTIRANGE)
3833 : {
3834 12 : Oid rangetype = get_multirange_range(typeForm->oid);
3835 :
3836 12 : ReleaseSysCache(tuple);
3837 :
3838 12 : tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(rangetype));
3839 12 : if (!HeapTupleIsValid(tuple))
3840 : {
3841 0 : if (is_missing != NULL)
3842 : {
3843 : /* return "no privileges" instead of throwing an error */
3844 0 : *is_missing = true;
3845 0 : return 0;
3846 : }
3847 : else
3848 0 : ereport(ERROR,
3849 : (errcode(ERRCODE_UNDEFINED_OBJECT),
3850 : errmsg("type with OID %u does not exist",
3851 : rangetype)));
3852 : }
3853 12 : typeForm = (Form_pg_type) GETSTRUCT(tuple);
3854 : }
3855 :
3856 : /*
3857 : * Now get the type's owner and ACL from the tuple
3858 : */
3859 4248 : ownerId = typeForm->typowner;
3860 :
3861 4248 : aclDatum = SysCacheGetAttr(TYPEOID, tuple,
3862 : Anum_pg_type_typacl, &isNull);
3863 4248 : if (isNull)
3864 : {
3865 : /* No ACL, so build default ACL */
3866 4014 : acl = acldefault(OBJECT_TYPE, ownerId);
3867 4014 : aclDatum = (Datum) 0;
3868 : }
3869 : else
3870 : {
3871 : /* detoast rel's ACL if necessary */
3872 234 : acl = DatumGetAclP(aclDatum);
3873 : }
3874 :
3875 4248 : result = aclmask(acl, roleid, ownerId, mask, how);
3876 :
3877 : /* if we have a detoasted copy, free it */
3878 4248 : if (acl && (Pointer) acl != DatumGetPointer(aclDatum))
3879 4248 : pfree(acl);
3880 :
3881 4248 : ReleaseSysCache(tuple);
3882 :
3883 4248 : return result;
3884 : }
3885 :
3886 : /*
3887 : * Exported generic routine for checking a user's access privileges to an object
3888 : */
3889 : AclResult
3890 2861510 : object_aclcheck(Oid classid, Oid objectid, Oid roleid, AclMode mode)
3891 : {
3892 2861510 : return object_aclcheck_ext(classid, objectid, roleid, mode, NULL);
3893 : }
3894 :
3895 : /*
3896 : * Exported generic routine for checking a user's access privileges to an
3897 : * object, with is_missing
3898 : */
3899 : AclResult
3900 2861894 : object_aclcheck_ext(Oid classid, Oid objectid,
3901 : Oid roleid, AclMode mode,
3902 : bool *is_missing)
3903 : {
3904 2861894 : if (object_aclmask_ext(classid, objectid, roleid, mode, ACLMASK_ANY,
3905 : is_missing) != 0)
3906 2861350 : return ACLCHECK_OK;
3907 : else
3908 544 : return ACLCHECK_NO_PRIV;
3909 : }
3910 :
3911 : /*
3912 : * Exported routine for checking a user's access privileges to a column
3913 : *
3914 : * Returns ACLCHECK_OK if the user has any of the privileges identified by
3915 : * 'mode'; otherwise returns a suitable error code (in practice, always
3916 : * ACLCHECK_NO_PRIV).
3917 : *
3918 : * As with pg_attribute_aclmask, only privileges granted directly on the
3919 : * column are considered here.
3920 : */
3921 : AclResult
3922 3538 : pg_attribute_aclcheck(Oid table_oid, AttrNumber attnum,
3923 : Oid roleid, AclMode mode)
3924 : {
3925 3538 : return pg_attribute_aclcheck_ext(table_oid, attnum, roleid, mode, NULL);
3926 : }
3927 :
3928 :
3929 : /*
3930 : * Exported routine for checking a user's access privileges to a column,
3931 : * with is_missing
3932 : */
3933 : AclResult
3934 5270 : pg_attribute_aclcheck_ext(Oid table_oid, AttrNumber attnum,
3935 : Oid roleid, AclMode mode, bool *is_missing)
3936 : {
3937 5270 : if (pg_attribute_aclmask_ext(table_oid, attnum, roleid, mode,
3938 : ACLMASK_ANY, is_missing) != 0)
3939 1960 : return ACLCHECK_OK;
3940 : else
3941 3310 : return ACLCHECK_NO_PRIV;
3942 : }
3943 :
3944 : /*
3945 : * Exported routine for checking a user's access privileges to any/all columns
3946 : *
3947 : * If 'how' is ACLMASK_ANY, then returns ACLCHECK_OK if user has any of the
3948 : * privileges identified by 'mode' on any non-dropped column in the relation;
3949 : * otherwise returns a suitable error code (in practice, always
3950 : * ACLCHECK_NO_PRIV).
3951 : *
3952 : * If 'how' is ACLMASK_ALL, then returns ACLCHECK_OK if user has any of the
3953 : * privileges identified by 'mode' on each non-dropped column in the relation
3954 : * (and there must be at least one such column); otherwise returns a suitable
3955 : * error code (in practice, always ACLCHECK_NO_PRIV).
3956 : *
3957 : * As with pg_attribute_aclmask, only privileges granted directly on the
3958 : * column(s) are considered here.
3959 : *
3960 : * Note: system columns are not considered here; there are cases where that
3961 : * might be appropriate but there are also cases where it wouldn't.
3962 : */
3963 : AclResult
3964 162 : pg_attribute_aclcheck_all(Oid table_oid, Oid roleid, AclMode mode,
3965 : AclMaskHow how)
3966 : {
3967 162 : return pg_attribute_aclcheck_all_ext(table_oid, roleid, mode, how, NULL);
3968 : }
3969 :
3970 : /*
3971 : * Exported routine for checking a user's access privileges to any/all columns,
3972 : * with is_missing
3973 : */
3974 : AclResult
3975 162 : pg_attribute_aclcheck_all_ext(Oid table_oid, Oid roleid,
3976 : AclMode mode, AclMaskHow how,
3977 : bool *is_missing)
3978 : {
3979 : AclResult result;
3980 : HeapTuple classTuple;
3981 : Form_pg_class classForm;
3982 : Oid ownerId;
3983 : AttrNumber nattrs;
3984 : AttrNumber curr_att;
3985 :
3986 : /*
3987 : * Must fetch pg_class row to get owner ID and number of attributes.
3988 : */
3989 162 : classTuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
3990 162 : if (!HeapTupleIsValid(classTuple))
3991 : {
3992 0 : if (is_missing != NULL)
3993 : {
3994 : /* return "no privileges" instead of throwing an error */
3995 0 : *is_missing = true;
3996 0 : return ACLCHECK_NO_PRIV;
3997 : }
3998 : else
3999 0 : ereport(ERROR,
4000 : (errcode(ERRCODE_UNDEFINED_TABLE),
4001 : errmsg("relation with OID %u does not exist",
4002 : table_oid)));
4003 : }
4004 162 : classForm = (Form_pg_class) GETSTRUCT(classTuple);
4005 :
4006 162 : ownerId = classForm->relowner;
4007 162 : nattrs = classForm->relnatts;
4008 :
4009 162 : ReleaseSysCache(classTuple);
4010 :
4011 : /*
4012 : * Initialize result in case there are no non-dropped columns. We want to
4013 : * report failure in such cases for either value of 'how'.
4014 : */
4015 162 : result = ACLCHECK_NO_PRIV;
4016 :
4017 414 : for (curr_att = 1; curr_att <= nattrs; curr_att++)
4018 : {
4019 : HeapTuple attTuple;
4020 : Datum aclDatum;
4021 : bool isNull;
4022 : Acl *acl;
4023 : AclMode attmask;
4024 :
4025 330 : attTuple = SearchSysCache2(ATTNUM,
4026 : ObjectIdGetDatum(table_oid),
4027 : Int16GetDatum(curr_att));
4028 :
4029 : /*
4030 : * Lookup failure probably indicates that the table was just dropped,
4031 : * but we'll treat it the same as a dropped column rather than
4032 : * throwing error.
4033 : */
4034 330 : if (!HeapTupleIsValid(attTuple))
4035 18 : continue;
4036 :
4037 : /* ignore dropped columns */
4038 330 : if (((Form_pg_attribute) GETSTRUCT(attTuple))->attisdropped)
4039 : {
4040 18 : ReleaseSysCache(attTuple);
4041 18 : continue;
4042 : }
4043 :
4044 312 : aclDatum = SysCacheGetAttr(ATTNUM, attTuple, Anum_pg_attribute_attacl,
4045 : &isNull);
4046 :
4047 : /*
4048 : * Here we hard-wire knowledge that the default ACL for a column
4049 : * grants no privileges, so that we can fall out quickly in the very
4050 : * common case where attacl is null.
4051 : */
4052 312 : if (isNull)
4053 156 : attmask = 0;
4054 : else
4055 : {
4056 : /* detoast column's ACL if necessary */
4057 156 : acl = DatumGetAclP(aclDatum);
4058 :
4059 156 : attmask = aclmask(acl, roleid, ownerId, mode, ACLMASK_ANY);
4060 :
4061 : /* if we have a detoasted copy, free it */
4062 156 : if ((Pointer) acl != DatumGetPointer(aclDatum))
4063 156 : pfree(acl);
4064 : }
4065 :
4066 312 : ReleaseSysCache(attTuple);
4067 :
4068 312 : if (attmask != 0)
4069 : {
4070 138 : result = ACLCHECK_OK;
4071 138 : if (how == ACLMASK_ANY)
4072 78 : break; /* succeed on any success */
4073 : }
4074 : else
4075 : {
4076 174 : result = ACLCHECK_NO_PRIV;
4077 174 : if (how == ACLMASK_ALL)
4078 36 : break; /* fail on any failure */
4079 : }
4080 : }
4081 :
4082 162 : return result;
4083 : }
4084 :
4085 : /*
4086 : * Exported routine for checking a user's access privileges to a table
4087 : *
4088 : * Returns ACLCHECK_OK if the user has any of the privileges identified by
4089 : * 'mode'; otherwise returns a suitable error code (in practice, always
4090 : * ACLCHECK_NO_PRIV).
4091 : */
4092 : AclResult
4093 1898892 : pg_class_aclcheck(Oid table_oid, Oid roleid, AclMode mode)
4094 : {
4095 1898892 : return pg_class_aclcheck_ext(table_oid, roleid, mode, NULL);
4096 : }
4097 :
4098 : /*
4099 : * Exported routine for checking a user's access privileges to a table,
4100 : * with is_missing
4101 : */
4102 : AclResult
4103 1900860 : pg_class_aclcheck_ext(Oid table_oid, Oid roleid,
4104 : AclMode mode, bool *is_missing)
4105 : {
4106 1900860 : if (pg_class_aclmask_ext(table_oid, roleid, mode,
4107 : ACLMASK_ANY, is_missing) != 0)
4108 1899710 : return ACLCHECK_OK;
4109 : else
4110 1150 : return ACLCHECK_NO_PRIV;
4111 : }
4112 :
4113 : /*
4114 : * Exported routine for checking a user's access privileges to a configuration
4115 : * parameter (GUC), identified by GUC name.
4116 : */
4117 : AclResult
4118 160 : pg_parameter_aclcheck(const char *name, Oid roleid, AclMode mode)
4119 : {
4120 160 : if (pg_parameter_aclmask(name, roleid, mode, ACLMASK_ANY) != 0)
4121 68 : return ACLCHECK_OK;
4122 : else
4123 92 : return ACLCHECK_NO_PRIV;
4124 : }
4125 :
4126 : /*
4127 : * Exported routine for checking a user's access privileges to a largeobject
4128 : */
4129 : AclResult
4130 560 : pg_largeobject_aclcheck_snapshot(Oid lobj_oid, Oid roleid, AclMode mode,
4131 : Snapshot snapshot)
4132 : {
4133 560 : if (pg_largeobject_aclmask_snapshot(lobj_oid, roleid, mode,
4134 : ACLMASK_ANY, snapshot) != 0)
4135 506 : return ACLCHECK_OK;
4136 : else
4137 54 : return ACLCHECK_NO_PRIV;
4138 : }
4139 :
4140 : /*
4141 : * Generic ownership check for an object
4142 : */
4143 : bool
4144 232528 : object_ownercheck(Oid classid, Oid objectid, Oid roleid)
4145 : {
4146 : int cacheid;
4147 : Oid ownerId;
4148 :
4149 : /* Superusers bypass all permission checking. */
4150 232528 : if (superuser_arg(roleid))
4151 224624 : return true;
4152 :
4153 : /* For large objects, the catalog to consult is pg_largeobject_metadata */
4154 7904 : if (classid == LargeObjectRelationId)
4155 24 : classid = LargeObjectMetadataRelationId;
4156 :
4157 7904 : cacheid = get_object_catcache_oid(classid);
4158 7904 : if (cacheid != -1)
4159 : {
4160 : /* we can get the object's tuple from the syscache */
4161 : HeapTuple tuple;
4162 :
4163 7876 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
4164 7876 : if (!HeapTupleIsValid(tuple))
4165 0 : ereport(ERROR,
4166 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4167 : errmsg("%s with OID %u does not exist", get_object_class_descr(classid), objectid)));
4168 :
4169 7876 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
4170 : tuple,
4171 7876 : get_object_attnum_owner(classid)));
4172 7876 : ReleaseSysCache(tuple);
4173 : }
4174 : else
4175 : {
4176 : /* for catalogs without an appropriate syscache */
4177 : Relation rel;
4178 : ScanKeyData entry[1];
4179 : SysScanDesc scan;
4180 : HeapTuple tuple;
4181 : bool isnull;
4182 :
4183 28 : rel = table_open(classid, AccessShareLock);
4184 :
4185 56 : ScanKeyInit(&entry[0],
4186 28 : get_object_attnum_oid(classid),
4187 : BTEqualStrategyNumber, F_OIDEQ,
4188 : ObjectIdGetDatum(objectid));
4189 :
4190 28 : scan = systable_beginscan(rel,
4191 : get_object_oid_index(classid), true,
4192 : NULL, 1, entry);
4193 :
4194 28 : tuple = systable_getnext(scan);
4195 28 : if (!HeapTupleIsValid(tuple))
4196 0 : ereport(ERROR,
4197 : (errcode(ERRCODE_UNDEFINED_OBJECT),
4198 : errmsg("%s with OID %u does not exist", get_object_class_descr(classid), objectid)));
4199 :
4200 28 : ownerId = DatumGetObjectId(heap_getattr(tuple,
4201 28 : get_object_attnum_owner(classid),
4202 : RelationGetDescr(rel),
4203 : &isnull));
4204 : Assert(!isnull);
4205 :
4206 28 : systable_endscan(scan);
4207 28 : table_close(rel, AccessShareLock);
4208 : }
4209 :
4210 7904 : return has_privs_of_role(roleid, ownerId);
4211 : }
4212 :
4213 : /*
4214 : * Check whether specified role has CREATEROLE privilege (or is a superuser)
4215 : *
4216 : * Note: roles do not have owners per se; instead we use this test in
4217 : * places where an ownership-like permissions test is needed for a role.
4218 : * Be sure to apply it to the role trying to do the operation, not the
4219 : * role being operated on! Also note that this generally should not be
4220 : * considered enough privilege if the target role is a superuser.
4221 : * (We don't handle that consideration here because we want to give a
4222 : * separate error message for such cases, so the caller has to deal with it.)
4223 : */
4224 : bool
4225 2338 : has_createrole_privilege(Oid roleid)
4226 : {
4227 2338 : bool result = false;
4228 : HeapTuple utup;
4229 :
4230 : /* Superusers bypass all permission checking. */
4231 2338 : if (superuser_arg(roleid))
4232 1820 : return true;
4233 :
4234 518 : utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
4235 518 : if (HeapTupleIsValid(utup))
4236 : {
4237 518 : result = ((Form_pg_authid) GETSTRUCT(utup))->rolcreaterole;
4238 518 : ReleaseSysCache(utup);
4239 : }
4240 518 : return result;
4241 : }
4242 :
4243 : bool
4244 4498 : has_bypassrls_privilege(Oid roleid)
4245 : {
4246 4498 : bool result = false;
4247 : HeapTuple utup;
4248 :
4249 : /* Superusers bypass all permission checking. */
4250 4498 : if (superuser_arg(roleid))
4251 1366 : return true;
4252 :
4253 3132 : utup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleid));
4254 3132 : if (HeapTupleIsValid(utup))
4255 : {
4256 3132 : result = ((Form_pg_authid) GETSTRUCT(utup))->rolbypassrls;
4257 3132 : ReleaseSysCache(utup);
4258 : }
4259 3132 : return result;
4260 : }
4261 :
4262 : /*
4263 : * Fetch pg_default_acl entry for given role, namespace and object type
4264 : * (object type must be given in pg_default_acl's encoding).
4265 : * Returns NULL if no such entry.
4266 : */
4267 : static Acl *
4268 140836 : get_default_acl_internal(Oid roleId, Oid nsp_oid, char objtype)
4269 : {
4270 140836 : Acl *result = NULL;
4271 : HeapTuple tuple;
4272 :
4273 140836 : tuple = SearchSysCache3(DEFACLROLENSPOBJ,
4274 : ObjectIdGetDatum(roleId),
4275 : ObjectIdGetDatum(nsp_oid),
4276 : CharGetDatum(objtype));
4277 :
4278 140836 : if (HeapTupleIsValid(tuple))
4279 : {
4280 : Datum aclDatum;
4281 : bool isNull;
4282 :
4283 228 : aclDatum = SysCacheGetAttr(DEFACLROLENSPOBJ, tuple,
4284 : Anum_pg_default_acl_defaclacl,
4285 : &isNull);
4286 228 : if (!isNull)
4287 228 : result = DatumGetAclPCopy(aclDatum);
4288 228 : ReleaseSysCache(tuple);
4289 : }
4290 :
4291 140836 : return result;
4292 : }
4293 :
4294 : /*
4295 : * Get default permissions for newly created object within given schema
4296 : *
4297 : * Returns NULL if built-in system defaults should be used.
4298 : *
4299 : * If the result is not NULL, caller must call recordDependencyOnNewAcl
4300 : * once the OID of the new object is known.
4301 : */
4302 : Acl *
4303 70418 : get_user_default_acl(ObjectType objtype, Oid ownerId, Oid nsp_oid)
4304 : {
4305 : Acl *result;
4306 : Acl *glob_acl;
4307 : Acl *schema_acl;
4308 : Acl *def_acl;
4309 : char defaclobjtype;
4310 :
4311 : /*
4312 : * Use NULL during bootstrap, since pg_default_acl probably isn't there
4313 : * yet.
4314 : */
4315 70418 : if (IsBootstrapProcessingMode())
4316 0 : return NULL;
4317 :
4318 : /* Check if object type is supported in pg_default_acl */
4319 70418 : switch (objtype)
4320 : {
4321 50618 : case OBJECT_TABLE:
4322 50618 : defaclobjtype = DEFACLOBJ_RELATION;
4323 50618 : break;
4324 :
4325 1656 : case OBJECT_SEQUENCE:
4326 1656 : defaclobjtype = DEFACLOBJ_SEQUENCE;
4327 1656 : break;
4328 :
4329 14612 : case OBJECT_FUNCTION:
4330 14612 : defaclobjtype = DEFACLOBJ_FUNCTION;
4331 14612 : break;
4332 :
4333 2596 : case OBJECT_TYPE:
4334 2596 : defaclobjtype = DEFACLOBJ_TYPE;
4335 2596 : break;
4336 :
4337 936 : case OBJECT_SCHEMA:
4338 936 : defaclobjtype = DEFACLOBJ_NAMESPACE;
4339 936 : break;
4340 :
4341 0 : default:
4342 0 : return NULL;
4343 : }
4344 :
4345 : /* Look up the relevant pg_default_acl entries */
4346 70418 : glob_acl = get_default_acl_internal(ownerId, InvalidOid, defaclobjtype);
4347 70418 : schema_acl = get_default_acl_internal(ownerId, nsp_oid, defaclobjtype);
4348 :
4349 : /* Quick out if neither entry exists */
4350 70418 : if (glob_acl == NULL && schema_acl == NULL)
4351 70226 : return NULL;
4352 :
4353 : /* We need to know the hard-wired default value, too */
4354 192 : def_acl = acldefault(objtype, ownerId);
4355 :
4356 : /* If there's no global entry, substitute the hard-wired default */
4357 192 : if (glob_acl == NULL)
4358 18 : glob_acl = def_acl;
4359 :
4360 : /* Merge in any per-schema privileges */
4361 192 : result = aclmerge(glob_acl, schema_acl, ownerId);
4362 :
4363 : /*
4364 : * For efficiency, we want to return NULL if the result equals default.
4365 : * This requires sorting both arrays to get an accurate comparison.
4366 : */
4367 192 : aclitemsort(result);
4368 192 : aclitemsort(def_acl);
4369 192 : if (aclequal(result, def_acl))
4370 24 : result = NULL;
4371 :
4372 192 : return result;
4373 : }
4374 :
4375 : /*
4376 : * Record dependencies on roles mentioned in a new object's ACL.
4377 : */
4378 : void
4379 73112 : recordDependencyOnNewAcl(Oid classId, Oid objectId, int32 objsubId,
4380 : Oid ownerId, Acl *acl)
4381 : {
4382 : int nmembers;
4383 : Oid *members;
4384 :
4385 : /* Nothing to do if ACL is defaulted */
4386 73112 : if (acl == NULL)
4387 72944 : return;
4388 :
4389 : /* Extract roles mentioned in ACL */
4390 168 : nmembers = aclmembers(acl, &members);
4391 :
4392 : /* Update the shared dependency ACL info */
4393 168 : updateAclDependencies(classId, objectId, objsubId,
4394 : ownerId,
4395 : 0, NULL,
4396 : nmembers, members);
4397 : }
4398 :
4399 : /*
4400 : * Record initial privileges for the top-level object passed in.
4401 : *
4402 : * For the object passed in, this will record its ACL (if any) and the ACLs of
4403 : * any sub-objects (eg: columns) into pg_init_privs.
4404 : */
4405 : void
4406 96 : recordExtObjInitPriv(Oid objoid, Oid classoid)
4407 : {
4408 : /*
4409 : * pg_class / pg_attribute
4410 : *
4411 : * If this is a relation then we need to see if there are any sub-objects
4412 : * (eg: columns) for it and, if so, be sure to call
4413 : * recordExtensionInitPrivWorker() for each one.
4414 : */
4415 96 : if (classoid == RelationRelationId)
4416 : {
4417 : Form_pg_class pg_class_tuple;
4418 : Datum aclDatum;
4419 : bool isNull;
4420 : HeapTuple tuple;
4421 :
4422 16 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(objoid));
4423 16 : if (!HeapTupleIsValid(tuple))
4424 0 : elog(ERROR, "cache lookup failed for relation %u", objoid);
4425 16 : pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
4426 :
4427 : /*
4428 : * Indexes don't have permissions, neither do the pg_class rows for
4429 : * composite types. (These cases are unreachable given the
4430 : * restrictions in ALTER EXTENSION ADD, but let's check anyway.)
4431 : */
4432 16 : if (pg_class_tuple->relkind == RELKIND_INDEX ||
4433 16 : pg_class_tuple->relkind == RELKIND_PARTITIONED_INDEX ||
4434 16 : pg_class_tuple->relkind == RELKIND_COMPOSITE_TYPE)
4435 : {
4436 0 : ReleaseSysCache(tuple);
4437 0 : return;
4438 : }
4439 :
4440 : /*
4441 : * If this isn't a sequence then it's possibly going to have
4442 : * column-level ACLs associated with it.
4443 : */
4444 16 : if (pg_class_tuple->relkind != RELKIND_SEQUENCE)
4445 : {
4446 : AttrNumber curr_att;
4447 14 : AttrNumber nattrs = pg_class_tuple->relnatts;
4448 :
4449 38 : for (curr_att = 1; curr_att <= nattrs; curr_att++)
4450 : {
4451 : HeapTuple attTuple;
4452 : Datum attaclDatum;
4453 :
4454 24 : attTuple = SearchSysCache2(ATTNUM,
4455 : ObjectIdGetDatum(objoid),
4456 : Int16GetDatum(curr_att));
4457 :
4458 24 : if (!HeapTupleIsValid(attTuple))
4459 0 : continue;
4460 :
4461 : /* ignore dropped columns */
4462 24 : if (((Form_pg_attribute) GETSTRUCT(attTuple))->attisdropped)
4463 : {
4464 2 : ReleaseSysCache(attTuple);
4465 2 : continue;
4466 : }
4467 :
4468 22 : attaclDatum = SysCacheGetAttr(ATTNUM, attTuple,
4469 : Anum_pg_attribute_attacl,
4470 : &isNull);
4471 :
4472 : /* no need to do anything for a NULL ACL */
4473 22 : if (isNull)
4474 : {
4475 18 : ReleaseSysCache(attTuple);
4476 18 : continue;
4477 : }
4478 :
4479 4 : recordExtensionInitPrivWorker(objoid, classoid, curr_att,
4480 : pg_class_tuple->relowner,
4481 4 : DatumGetAclP(attaclDatum));
4482 :
4483 4 : ReleaseSysCache(attTuple);
4484 : }
4485 : }
4486 :
4487 16 : aclDatum = SysCacheGetAttr(RELOID, tuple, Anum_pg_class_relacl,
4488 : &isNull);
4489 :
4490 : /* Add the record, if any, for the top-level object */
4491 16 : if (!isNull)
4492 8 : recordExtensionInitPrivWorker(objoid, classoid, 0,
4493 : pg_class_tuple->relowner,
4494 8 : DatumGetAclP(aclDatum));
4495 :
4496 16 : ReleaseSysCache(tuple);
4497 : }
4498 80 : else if (classoid == LargeObjectRelationId)
4499 : {
4500 : /* For large objects, we must consult pg_largeobject_metadata */
4501 : Datum aclDatum;
4502 : bool isNull;
4503 : HeapTuple tuple;
4504 : Form_pg_largeobject_metadata form_lo_meta;
4505 : ScanKeyData entry[1];
4506 : SysScanDesc scan;
4507 : Relation relation;
4508 :
4509 : /*
4510 : * Note: this is dead code, given that we don't allow large objects to
4511 : * be made extension members. But it seems worth carrying in case
4512 : * some future caller of this function has need for it.
4513 : */
4514 0 : relation = table_open(LargeObjectMetadataRelationId, RowExclusiveLock);
4515 :
4516 : /* There's no syscache for pg_largeobject_metadata */
4517 0 : ScanKeyInit(&entry[0],
4518 : Anum_pg_largeobject_metadata_oid,
4519 : BTEqualStrategyNumber, F_OIDEQ,
4520 : ObjectIdGetDatum(objoid));
4521 :
4522 0 : scan = systable_beginscan(relation,
4523 : LargeObjectMetadataOidIndexId, true,
4524 : NULL, 1, entry);
4525 :
4526 0 : tuple = systable_getnext(scan);
4527 0 : if (!HeapTupleIsValid(tuple))
4528 0 : elog(ERROR, "could not find tuple for large object %u", objoid);
4529 0 : form_lo_meta = (Form_pg_largeobject_metadata) GETSTRUCT(tuple);
4530 :
4531 0 : aclDatum = heap_getattr(tuple,
4532 : Anum_pg_largeobject_metadata_lomacl,
4533 : RelationGetDescr(relation), &isNull);
4534 :
4535 : /* Add the record, if any, for the top-level object */
4536 0 : if (!isNull)
4537 0 : recordExtensionInitPrivWorker(objoid, classoid, 0,
4538 : form_lo_meta->lomowner,
4539 0 : DatumGetAclP(aclDatum));
4540 :
4541 0 : systable_endscan(scan);
4542 : }
4543 : /* This will error on unsupported classoid. */
4544 80 : else if (get_object_attnum_acl(classoid) != InvalidAttrNumber)
4545 : {
4546 : int cacheid;
4547 : Oid ownerId;
4548 : Datum aclDatum;
4549 : bool isNull;
4550 : HeapTuple tuple;
4551 :
4552 58 : cacheid = get_object_catcache_oid(classoid);
4553 58 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objoid));
4554 58 : if (!HeapTupleIsValid(tuple))
4555 0 : elog(ERROR, "cache lookup failed for %s %u",
4556 : get_object_class_descr(classoid), objoid);
4557 :
4558 58 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
4559 : tuple,
4560 58 : get_object_attnum_owner(classoid)));
4561 58 : aclDatum = SysCacheGetAttr(cacheid, tuple,
4562 58 : get_object_attnum_acl(classoid),
4563 : &isNull);
4564 :
4565 : /* Add the record, if any, for the top-level object */
4566 58 : if (!isNull)
4567 10 : recordExtensionInitPrivWorker(objoid, classoid, 0,
4568 10 : ownerId, DatumGetAclP(aclDatum));
4569 :
4570 58 : ReleaseSysCache(tuple);
4571 : }
4572 : }
4573 :
4574 : /*
4575 : * For the object passed in, remove its ACL and the ACLs of any object subIds
4576 : * from pg_init_privs (via recordExtensionInitPrivWorker()).
4577 : */
4578 : void
4579 226 : removeExtObjInitPriv(Oid objoid, Oid classoid)
4580 : {
4581 : Oid ownerId;
4582 :
4583 : /*
4584 : * If this is a relation then we need to see if there are any sub-objects
4585 : * (eg: columns) for it and, if so, be sure to call
4586 : * recordExtensionInitPrivWorker() for each one.
4587 : */
4588 226 : if (classoid == RelationRelationId)
4589 : {
4590 : Form_pg_class pg_class_tuple;
4591 : HeapTuple tuple;
4592 :
4593 40 : tuple = SearchSysCache1(RELOID, ObjectIdGetDatum(objoid));
4594 40 : if (!HeapTupleIsValid(tuple))
4595 0 : elog(ERROR, "cache lookup failed for relation %u", objoid);
4596 40 : pg_class_tuple = (Form_pg_class) GETSTRUCT(tuple);
4597 40 : ownerId = pg_class_tuple->relowner;
4598 :
4599 : /*
4600 : * Indexes don't have permissions, neither do the pg_class rows for
4601 : * composite types. (These cases are unreachable given the
4602 : * restrictions in ALTER EXTENSION DROP, but let's check anyway.)
4603 : */
4604 40 : if (pg_class_tuple->relkind == RELKIND_INDEX ||
4605 40 : pg_class_tuple->relkind == RELKIND_PARTITIONED_INDEX ||
4606 40 : pg_class_tuple->relkind == RELKIND_COMPOSITE_TYPE)
4607 : {
4608 0 : ReleaseSysCache(tuple);
4609 0 : return;
4610 : }
4611 :
4612 : /*
4613 : * If this isn't a sequence then it's possibly going to have
4614 : * column-level ACLs associated with it.
4615 : */
4616 40 : if (pg_class_tuple->relkind != RELKIND_SEQUENCE)
4617 : {
4618 : AttrNumber curr_att;
4619 40 : AttrNumber nattrs = pg_class_tuple->relnatts;
4620 :
4621 938 : for (curr_att = 1; curr_att <= nattrs; curr_att++)
4622 : {
4623 : HeapTuple attTuple;
4624 :
4625 898 : attTuple = SearchSysCache2(ATTNUM,
4626 : ObjectIdGetDatum(objoid),
4627 : Int16GetDatum(curr_att));
4628 :
4629 898 : if (!HeapTupleIsValid(attTuple))
4630 0 : continue;
4631 :
4632 : /* when removing, remove all entries, even dropped columns */
4633 :
4634 898 : recordExtensionInitPrivWorker(objoid, classoid, curr_att,
4635 : ownerId, NULL);
4636 :
4637 898 : ReleaseSysCache(attTuple);
4638 : }
4639 : }
4640 :
4641 40 : ReleaseSysCache(tuple);
4642 : }
4643 : else
4644 : {
4645 : /* Must find out the owner's OID the hard way */
4646 : AttrNumber ownerattnum;
4647 : int cacheid;
4648 : HeapTuple tuple;
4649 :
4650 : /*
4651 : * If the object is of a kind that has no owner, it should not have
4652 : * any pg_init_privs entry either.
4653 : */
4654 186 : ownerattnum = get_object_attnum_owner(classoid);
4655 186 : if (ownerattnum == InvalidAttrNumber)
4656 6 : return;
4657 180 : cacheid = get_object_catcache_oid(classoid);
4658 180 : tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objoid));
4659 180 : if (!HeapTupleIsValid(tuple))
4660 0 : elog(ERROR, "cache lookup failed for %s %u",
4661 : get_object_class_descr(classoid), objoid);
4662 :
4663 180 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
4664 : tuple,
4665 : ownerattnum));
4666 :
4667 180 : ReleaseSysCache(tuple);
4668 : }
4669 :
4670 : /* Remove the record, if any, for the top-level object */
4671 220 : recordExtensionInitPrivWorker(objoid, classoid, 0, ownerId, NULL);
4672 : }
4673 :
4674 : /*
4675 : * Record initial ACL for an extension object
4676 : *
4677 : * Can be called at any time, we check if 'creating_extension' is set and, if
4678 : * not, exit immediately.
4679 : *
4680 : * Pass in the object OID, the OID of the class (the OID of the table which
4681 : * the object is defined in) and the 'sub' id of the object (objsubid), if
4682 : * any. If there is no 'sub' id (they are currently only used for columns of
4683 : * tables) then pass in '0'. Also pass the OID of the object's owner.
4684 : * Finally, pass in the complete ACL to store.
4685 : *
4686 : * If an ACL already exists for this object/sub-object then we will replace
4687 : * it with what is passed in.
4688 : *
4689 : * Passing in NULL for 'new_acl' will result in the entry for the object being
4690 : * removed, if one is found.
4691 : */
4692 : static void
4693 17322 : recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
4694 : Oid ownerId, Acl *new_acl)
4695 : {
4696 : /*
4697 : * Generally, we only record the initial privileges when an extension is
4698 : * being created, but because we don't actually use CREATE EXTENSION
4699 : * during binary upgrades with pg_upgrade, there is a variable to let us
4700 : * know that the GRANT and REVOKE statements being issued, while this
4701 : * variable is true, are for the initial privileges of the extension
4702 : * object and therefore we need to record them.
4703 : */
4704 17322 : if (!creating_extension && !binary_upgrade_record_init_privs)
4705 16696 : return;
4706 :
4707 626 : recordExtensionInitPrivWorker(objoid, classoid, objsubid, ownerId, new_acl);
4708 : }
4709 :
4710 : /*
4711 : * Record initial ACL for an extension object, worker.
4712 : *
4713 : * This will perform a wholesale replacement of the entire ACL for the object
4714 : * passed in, therefore be sure to pass in the complete new ACL to use.
4715 : *
4716 : * Generally speaking, do *not* use this function directly but instead use
4717 : * recordExtensionInitPriv(), which checks if 'creating_extension' is set.
4718 : * This function does *not* check if 'creating_extension' is set as it is also
4719 : * used when an object is added to or removed from an extension via ALTER
4720 : * EXTENSION ... ADD/DROP.
4721 : */
4722 : static void
4723 1766 : recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid,
4724 : Oid ownerId, Acl *new_acl)
4725 : {
4726 : Relation relation;
4727 : ScanKeyData key[3];
4728 : SysScanDesc scan;
4729 : HeapTuple tuple;
4730 : HeapTuple oldtuple;
4731 : int noldmembers;
4732 : int nnewmembers;
4733 : Oid *oldmembers;
4734 : Oid *newmembers;
4735 :
4736 : /* We'll need the role membership of the new ACL. */
4737 1766 : nnewmembers = aclmembers(new_acl, &newmembers);
4738 :
4739 : /* Search pg_init_privs for an existing entry. */
4740 1766 : relation = table_open(InitPrivsRelationId, RowExclusiveLock);
4741 :
4742 1766 : ScanKeyInit(&key[0],
4743 : Anum_pg_init_privs_objoid,
4744 : BTEqualStrategyNumber, F_OIDEQ,
4745 : ObjectIdGetDatum(objoid));
4746 1766 : ScanKeyInit(&key[1],
4747 : Anum_pg_init_privs_classoid,
4748 : BTEqualStrategyNumber, F_OIDEQ,
4749 : ObjectIdGetDatum(classoid));
4750 1766 : ScanKeyInit(&key[2],
4751 : Anum_pg_init_privs_objsubid,
4752 : BTEqualStrategyNumber, F_INT4EQ,
4753 : Int32GetDatum(objsubid));
4754 :
4755 1766 : scan = systable_beginscan(relation, InitPrivsObjIndexId, true,
4756 : NULL, 3, key);
4757 :
4758 : /* There should exist only one entry or none. */
4759 1766 : oldtuple = systable_getnext(scan);
4760 :
4761 : /* If we find an entry, update it with the latest ACL. */
4762 1766 : if (HeapTupleIsValid(oldtuple))
4763 : {
4764 208 : Datum values[Natts_pg_init_privs] = {0};
4765 208 : bool nulls[Natts_pg_init_privs] = {0};
4766 208 : bool replace[Natts_pg_init_privs] = {0};
4767 : Datum oldAclDatum;
4768 : bool isNull;
4769 : Acl *old_acl;
4770 :
4771 : /* Update pg_shdepend for roles mentioned in the old/new ACLs. */
4772 208 : oldAclDatum = heap_getattr(oldtuple, Anum_pg_init_privs_initprivs,
4773 : RelationGetDescr(relation), &isNull);
4774 208 : if (!isNull)
4775 208 : old_acl = DatumGetAclP(oldAclDatum);
4776 : else
4777 0 : old_acl = NULL; /* this case shouldn't happen, probably */
4778 208 : noldmembers = aclmembers(old_acl, &oldmembers);
4779 :
4780 208 : updateInitAclDependencies(classoid, objoid, objsubid,
4781 : ownerId,
4782 : noldmembers, oldmembers,
4783 : nnewmembers, newmembers);
4784 :
4785 : /* If we have a new ACL to set, then update the row with it. */
4786 208 : if (new_acl)
4787 : {
4788 144 : values[Anum_pg_init_privs_initprivs - 1] = PointerGetDatum(new_acl);
4789 144 : replace[Anum_pg_init_privs_initprivs - 1] = true;
4790 :
4791 144 : oldtuple = heap_modify_tuple(oldtuple, RelationGetDescr(relation),
4792 : values, nulls, replace);
4793 :
4794 144 : CatalogTupleUpdate(relation, &oldtuple->t_self, oldtuple);
4795 : }
4796 : else
4797 : {
4798 : /* new_acl is NULL, so delete the entry we found. */
4799 64 : CatalogTupleDelete(relation, &oldtuple->t_self);
4800 : }
4801 : }
4802 : else
4803 : {
4804 1558 : Datum values[Natts_pg_init_privs] = {0};
4805 1558 : bool nulls[Natts_pg_init_privs] = {0};
4806 :
4807 : /*
4808 : * Only add a new entry if the new ACL is non-NULL.
4809 : *
4810 : * If we are passed in a NULL ACL and no entry exists, we can just
4811 : * fall through and do nothing.
4812 : */
4813 1558 : if (new_acl)
4814 : {
4815 : /* No entry found, so add it. */
4816 500 : values[Anum_pg_init_privs_objoid - 1] = ObjectIdGetDatum(objoid);
4817 500 : values[Anum_pg_init_privs_classoid - 1] = ObjectIdGetDatum(classoid);
4818 500 : values[Anum_pg_init_privs_objsubid - 1] = Int32GetDatum(objsubid);
4819 :
4820 : /* This function only handles initial privileges of extensions */
4821 500 : values[Anum_pg_init_privs_privtype - 1] =
4822 500 : CharGetDatum(INITPRIVS_EXTENSION);
4823 :
4824 500 : values[Anum_pg_init_privs_initprivs - 1] = PointerGetDatum(new_acl);
4825 :
4826 500 : tuple = heap_form_tuple(RelationGetDescr(relation), values, nulls);
4827 :
4828 500 : CatalogTupleInsert(relation, tuple);
4829 :
4830 : /* Update pg_shdepend, too. */
4831 500 : noldmembers = 0;
4832 500 : oldmembers = NULL;
4833 :
4834 500 : updateInitAclDependencies(classoid, objoid, objsubid,
4835 : ownerId,
4836 : noldmembers, oldmembers,
4837 : nnewmembers, newmembers);
4838 : }
4839 : }
4840 :
4841 1766 : systable_endscan(scan);
4842 :
4843 : /* prevent error when processing objects multiple times */
4844 1766 : CommandCounterIncrement();
4845 :
4846 1766 : table_close(relation, RowExclusiveLock);
4847 1766 : }
4848 :
4849 : /*
4850 : * RemoveRoleFromInitPriv
4851 : *
4852 : * Used by shdepDropOwned to remove mentions of a role in pg_init_privs.
4853 : */
4854 : void
4855 14 : RemoveRoleFromInitPriv(Oid roleid, Oid classid, Oid objid, int32 objsubid)
4856 : {
4857 : Relation rel;
4858 : ScanKeyData key[3];
4859 : SysScanDesc scan;
4860 : HeapTuple oldtuple;
4861 : int cacheid;
4862 : HeapTuple objtuple;
4863 : Oid ownerId;
4864 : Datum oldAclDatum;
4865 : bool isNull;
4866 : Acl *old_acl;
4867 : Acl *new_acl;
4868 : HeapTuple newtuple;
4869 : int noldmembers;
4870 : int nnewmembers;
4871 : Oid *oldmembers;
4872 : Oid *newmembers;
4873 :
4874 : /* Search for existing pg_init_privs entry for the target object. */
4875 14 : rel = table_open(InitPrivsRelationId, RowExclusiveLock);
4876 :
4877 14 : ScanKeyInit(&key[0],
4878 : Anum_pg_init_privs_objoid,
4879 : BTEqualStrategyNumber, F_OIDEQ,
4880 : ObjectIdGetDatum(objid));
4881 14 : ScanKeyInit(&key[1],
4882 : Anum_pg_init_privs_classoid,
4883 : BTEqualStrategyNumber, F_OIDEQ,
4884 : ObjectIdGetDatum(classid));
4885 14 : ScanKeyInit(&key[2],
4886 : Anum_pg_init_privs_objsubid,
4887 : BTEqualStrategyNumber, F_INT4EQ,
4888 : Int32GetDatum(objsubid));
4889 :
4890 14 : scan = systable_beginscan(rel, InitPrivsObjIndexId, true,
4891 : NULL, 3, key);
4892 :
4893 : /* There should exist only one entry or none. */
4894 14 : oldtuple = systable_getnext(scan);
4895 :
4896 14 : if (!HeapTupleIsValid(oldtuple))
4897 : {
4898 : /*
4899 : * Hmm, why are we here if there's no entry? But pack up and go away
4900 : * quietly.
4901 : */
4902 0 : systable_endscan(scan);
4903 0 : table_close(rel, RowExclusiveLock);
4904 0 : return;
4905 : }
4906 :
4907 : /* Get a writable copy of the existing ACL. */
4908 14 : oldAclDatum = heap_getattr(oldtuple, Anum_pg_init_privs_initprivs,
4909 : RelationGetDescr(rel), &isNull);
4910 14 : if (!isNull)
4911 14 : old_acl = DatumGetAclPCopy(oldAclDatum);
4912 : else
4913 0 : old_acl = NULL; /* this case shouldn't happen, probably */
4914 :
4915 : /*
4916 : * We need the members of both old and new ACLs so we can correct the
4917 : * shared dependency information. Collect data before
4918 : * merge_acl_with_grant throws away old_acl.
4919 : */
4920 14 : noldmembers = aclmembers(old_acl, &oldmembers);
4921 :
4922 : /* Must find out the owner's OID the hard way. */
4923 14 : cacheid = get_object_catcache_oid(classid);
4924 14 : objtuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objid));
4925 14 : if (!HeapTupleIsValid(objtuple))
4926 0 : elog(ERROR, "cache lookup failed for %s %u",
4927 : get_object_class_descr(classid), objid);
4928 :
4929 14 : ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
4930 : objtuple,
4931 14 : get_object_attnum_owner(classid)));
4932 14 : ReleaseSysCache(objtuple);
4933 :
4934 : /*
4935 : * Generate new ACL. Grantor of rights is always the same as the owner.
4936 : */
4937 14 : if (old_acl != NULL)
4938 14 : new_acl = merge_acl_with_grant(old_acl,
4939 : false, /* is_grant */
4940 : false, /* grant_option */
4941 : DROP_RESTRICT,
4942 14 : list_make1_oid(roleid),
4943 : ACLITEM_ALL_PRIV_BITS,
4944 : ownerId,
4945 : ownerId);
4946 : else
4947 0 : new_acl = NULL; /* this case shouldn't happen, probably */
4948 :
4949 : /* If we end with an empty ACL, delete the pg_init_privs entry. */
4950 14 : if (new_acl == NULL || ACL_NUM(new_acl) == 0)
4951 : {
4952 0 : CatalogTupleDelete(rel, &oldtuple->t_self);
4953 : }
4954 : else
4955 : {
4956 14 : Datum values[Natts_pg_init_privs] = {0};
4957 14 : bool nulls[Natts_pg_init_privs] = {0};
4958 14 : bool replaces[Natts_pg_init_privs] = {0};
4959 :
4960 : /* Update existing entry. */
4961 14 : values[Anum_pg_init_privs_initprivs - 1] = PointerGetDatum(new_acl);
4962 14 : replaces[Anum_pg_init_privs_initprivs - 1] = true;
4963 :
4964 14 : newtuple = heap_modify_tuple(oldtuple, RelationGetDescr(rel),
4965 : values, nulls, replaces);
4966 14 : CatalogTupleUpdate(rel, &newtuple->t_self, newtuple);
4967 : }
4968 :
4969 : /*
4970 : * Update the shared dependency ACL info.
4971 : */
4972 14 : nnewmembers = aclmembers(new_acl, &newmembers);
4973 :
4974 14 : updateInitAclDependencies(classid, objid, objsubid,
4975 : ownerId,
4976 : noldmembers, oldmembers,
4977 : nnewmembers, newmembers);
4978 :
4979 14 : systable_endscan(scan);
4980 :
4981 : /* prevent error when processing objects multiple times */
4982 14 : CommandCounterIncrement();
4983 :
4984 14 : table_close(rel, RowExclusiveLock);
4985 : }
|
