TLA  Line data    Source code

       1                 : /*
       2                 :  * dummy_seclabel.c
       3                 :  *
       4                 :  * Dummy security label provider.
       5                 :  *
       6                 :  * This module does not provide anything worthwhile from a security
       7                 :  * perspective, but allows regression testing independent of platform-specific
       8                 :  * features like SELinux.
       9                 :  *
      10                 :  * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
      11                 :  * Portions Copyright (c) 1994, Regents of the University of California
      12                 :  */
      13                 : #include "postgres.h"
      14                 : 
      15                 : #include "commands/seclabel.h"
      16                 : #include "fmgr.h"
      17                 : #include "miscadmin.h"
      18                 : #include "utils/rel.h"
      19                 : 
      20 CBC           1 : PG_MODULE_MAGIC;
      21                 : 
      22               1 : PG_FUNCTION_INFO_V1(dummy_seclabel_dummy);
      23                 : 
      24 ECB             : static void
      25 CBC          18 : dummy_object_relabel(const ObjectAddress *object, const char *seclabel)
      26 ECB             : {
      27 CBC          18 :     if (seclabel == NULL ||
      28 GIC          18 :         strcmp(seclabel, "unclassified") == 0 ||
      29 CBC          14 :         strcmp(seclabel, "classified") == 0)
      30              13 :         return;
      31                 : 
      32               5 :     if (strcmp(seclabel, "secret") == 0 ||
      33               3 :         strcmp(seclabel, "top secret") == 0)
      34                 :     {
      35 GIC           3 :         if (!superuser())
      36 CBC           2 :             ereport(ERROR,
      37                 :                     (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
      38 ECB             :                      errmsg("only superuser can set '%s' label", seclabel)));
      39 GIC           1 :         return;
      40                 :     }
      41               2 :     ereport(ERROR,
      42                 :             (errcode(ERRCODE_INVALID_NAME),
      43                 :              errmsg("'%s' is not a valid security label", seclabel)));
      44 ECB             : }
      45                 : 
      46                 : void
      47 CBC           1 : _PG_init(void)
      48                 : {
      49 GIC           1 :     register_label_provider("dummy", dummy_object_relabel);
      50               1 : }
      51                 : 
      52                 : /*
      53                 :  * This function is here just so that the extension is not completely empty
      54 EUB             :  * and the dynamic library is loaded when CREATE EXTENSION runs.
      55                 :  */
      56                 : Datum
      57 UIC           0 : dummy_seclabel_dummy(PG_FUNCTION_ARGS)
      58                 : {
      59               0 :     PG_RETURN_VOID();
      60                 : }