89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/* -------------------------------------------------------------------------
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*
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* contrib/sepgsql/database.c
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*
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* Routines corresponding to database objects
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*
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* Copyright (c) 2010-2011, PostgreSQL Global Development Group
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*
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* -------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "catalog/dependency.h"
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#include "catalog/pg_database.h"
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#include "commands/seclabel.h"
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#include "sepgsql.h"
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void
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sepgsql_database_post_create(Oid databaseId)
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{
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char *scontext = sepgsql_get_client_label();
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char *tcontext;
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char *ncontext;
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ObjectAddress object;
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/*
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* Compute a default security label of the newly created database
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* based on a pair of security label of client and source database.
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*
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* XXX - Right now, this logic uses "template1" as its source, because
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* here is no way to know the Oid of source database.
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*/
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object.classId = DatabaseRelationId;
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object.objectId = TemplateDbOid;
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object.objectSubId = 0;
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tcontext = GetSecurityLabel(&object, SEPGSQL_LABEL_TAG);
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ncontext = sepgsql_compute_create(scontext, tcontext,
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SEPG_CLASS_DB_DATABASE);
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/*
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* Assign the default security label on the new database
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*/
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object.classId = DatabaseRelationId;
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object.objectId = databaseId;
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object.objectSubId = 0;
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SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ncontext);
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pfree(ncontext);
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pfree(tcontext);
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}
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/*
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* sepgsql_database_relabel
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*
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* It checks privileges to relabel the supplied database with the `seclabel'
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*/
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void
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sepgsql_database_relabel(Oid databaseId, const char *seclabel)
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{
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ObjectAddress object;
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char *audit_name;
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object.classId = DatabaseRelationId;
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object.objectId = databaseId;
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object.objectSubId = 0;
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audit_name = getObjectDescription(&object);
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/*
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* check db_database:{setattr relabelfrom} permission
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*/
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sepgsql_avc_check_perms(&object,
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SEPG_CLASS_DB_DATABASE,
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SEPG_DB_DATABASE__SETATTR |
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SEPG_DB_DATABASE__RELABELFROM,
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audit_name,
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true);
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/*
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* check db_database:{relabelto} permission
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*/
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sepgsql_avc_check_perms_label(seclabel,
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SEPG_CLASS_DB_DATABASE,
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SEPG_DB_DATABASE__RELABELTO,
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audit_name,
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true);
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pfree(audit_name);
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}
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