sepgsql.h

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/* -------------------------------------------------------------------------
 *
 * contrib/sepgsql/sepgsql.h
 *
 * Definitions corresponding to SE-PostgreSQL
 *
 * Copyright (c) 2010-2021, PostgreSQL Global Development Group
 *
 * -------------------------------------------------------------------------
 */
#ifndef SEPGSQL_H
#define SEPGSQL_H

#include "catalog/objectaddress.h"
#include "fmgr.h"

#include <selinux/selinux.h>
#include <selinux/avc.h>

/*
 * SE-PostgreSQL Label Tag
 */
#define SEPGSQL_LABEL_TAG           "selinux"

/*
 * SE-PostgreSQL performing mode
 */
#define SEPGSQL_MODE_DEFAULT        1
#define SEPGSQL_MODE_PERMISSIVE     2
#define SEPGSQL_MODE_INTERNAL       3
#define SEPGSQL_MODE_DISABLED       4

/*
 * Internally used code of object classes
 */
#define SEPG_CLASS_PROCESS          0
#define SEPG_CLASS_FILE             1
#define SEPG_CLASS_DIR              2
#define SEPG_CLASS_LNK_FILE         3
#define SEPG_CLASS_CHR_FILE         4
#define SEPG_CLASS_BLK_FILE         5
#define SEPG_CLASS_SOCK_FILE        6
#define SEPG_CLASS_FIFO_FILE        7
#define SEPG_CLASS_DB_DATABASE      8
#define SEPG_CLASS_DB_SCHEMA        9
#define SEPG_CLASS_DB_TABLE         10
#define SEPG_CLASS_DB_SEQUENCE      11
#define SEPG_CLASS_DB_PROCEDURE     12
#define SEPG_CLASS_DB_COLUMN        13
#define SEPG_CLASS_DB_TUPLE         14
#define SEPG_CLASS_DB_BLOB          15
#define SEPG_CLASS_DB_LANGUAGE      16
#define SEPG_CLASS_DB_VIEW          17
#define SEPG_CLASS_MAX              18

/*
 * Internally used code of access vectors
 */
#define SEPG_PROCESS__TRANSITION            (1<<0)
#define SEPG_PROCESS__DYNTRANSITION         (1<<1)
#define SEPG_PROCESS__SETCURRENT            (1<<2)

#define SEPG_FILE__READ                     (1<<0)
#define SEPG_FILE__WRITE                    (1<<1)
#define SEPG_FILE__CREATE                   (1<<2)
#define SEPG_FILE__GETATTR                  (1<<3)
#define SEPG_FILE__UNLINK                   (1<<4)
#define SEPG_FILE__RENAME                   (1<<5)
#define SEPG_FILE__APPEND                   (1<<6)

#define SEPG_DIR__READ                      (SEPG_FILE__READ)
#define SEPG_DIR__WRITE                     (SEPG_FILE__WRITE)
#define SEPG_DIR__CREATE                    (SEPG_FILE__CREATE)
#define SEPG_DIR__GETATTR                   (SEPG_FILE__GETATTR)
#define SEPG_DIR__UNLINK                    (SEPG_FILE__UNLINK)
#define SEPG_DIR__RENAME                    (SEPG_FILE__RENAME)
#define SEPG_DIR__SEARCH                    (1<<6)
#define SEPG_DIR__ADD_NAME                  (1<<7)
#define SEPG_DIR__REMOVE_NAME               (1<<8)
#define SEPG_DIR__RMDIR                     (1<<9)
#define SEPG_DIR__REPARENT                  (1<<10)

#define SEPG_LNK_FILE__READ                 (SEPG_FILE__READ)
#define SEPG_LNK_FILE__WRITE                (SEPG_FILE__WRITE)
#define SEPG_LNK_FILE__CREATE               (SEPG_FILE__CREATE)
#define SEPG_LNK_FILE__GETATTR              (SEPG_FILE__GETATTR)
#define SEPG_LNK_FILE__UNLINK               (SEPG_FILE__UNLINK)
#define SEPG_LNK_FILE__RENAME               (SEPG_FILE__RENAME)

#define SEPG_CHR_FILE__READ                 (SEPG_FILE__READ)
#define SEPG_CHR_FILE__WRITE                (SEPG_FILE__WRITE)
#define SEPG_CHR_FILE__CREATE               (SEPG_FILE__CREATE)
#define SEPG_CHR_FILE__GETATTR              (SEPG_FILE__GETATTR)
#define SEPG_CHR_FILE__UNLINK               (SEPG_FILE__UNLINK)
#define SEPG_CHR_FILE__RENAME               (SEPG_FILE__RENAME)

#define SEPG_BLK_FILE__READ                 (SEPG_FILE__READ)
#define SEPG_BLK_FILE__WRITE                (SEPG_FILE__WRITE)
#define SEPG_BLK_FILE__CREATE               (SEPG_FILE__CREATE)
#define SEPG_BLK_FILE__GETATTR              (SEPG_FILE__GETATTR)
#define SEPG_BLK_FILE__UNLINK               (SEPG_FILE__UNLINK)
#define SEPG_BLK_FILE__RENAME               (SEPG_FILE__RENAME)

#define SEPG_SOCK_FILE__READ                (SEPG_FILE__READ)
#define SEPG_SOCK_FILE__WRITE               (SEPG_FILE__WRITE)
#define SEPG_SOCK_FILE__CREATE              (SEPG_FILE__CREATE)
#define SEPG_SOCK_FILE__GETATTR             (SEPG_FILE__GETATTR)
#define SEPG_SOCK_FILE__UNLINK              (SEPG_FILE__UNLINK)
#define SEPG_SOCK_FILE__RENAME              (SEPG_FILE__RENAME)

#define SEPG_FIFO_FILE__READ                (SEPG_FILE__READ)
#define SEPG_FIFO_FILE__WRITE               (SEPG_FILE__WRITE)
#define SEPG_FIFO_FILE__CREATE              (SEPG_FILE__CREATE)
#define SEPG_FIFO_FILE__GETATTR             (SEPG_FILE__GETATTR)
#define SEPG_FIFO_FILE__UNLINK              (SEPG_FILE__UNLINK)
#define SEPG_FIFO_FILE__RENAME              (SEPG_FILE__RENAME)

#define SEPG_DB_DATABASE__CREATE            (1<<0)
#define SEPG_DB_DATABASE__DROP              (1<<1)
#define SEPG_DB_DATABASE__GETATTR           (1<<2)
#define SEPG_DB_DATABASE__SETATTR           (1<<3)
#define SEPG_DB_DATABASE__RELABELFROM       (1<<4)
#define SEPG_DB_DATABASE__RELABELTO         (1<<5)
#define SEPG_DB_DATABASE__ACCESS            (1<<6)
#define SEPG_DB_DATABASE__LOAD_MODULE       (1<<7)

#define SEPG_DB_SCHEMA__CREATE              (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_SCHEMA__DROP                (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_SCHEMA__GETATTR             (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_SCHEMA__SETATTR             (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_SCHEMA__RELABELFROM         (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_SCHEMA__RELABELTO           (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_SCHEMA__SEARCH              (1<<6)
#define SEPG_DB_SCHEMA__ADD_NAME            (1<<7)
#define SEPG_DB_SCHEMA__REMOVE_NAME         (1<<8)

#define SEPG_DB_TABLE__CREATE               (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_TABLE__DROP                 (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_TABLE__GETATTR              (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_TABLE__SETATTR              (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_TABLE__RELABELFROM          (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_TABLE__RELABELTO            (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_TABLE__SELECT               (1<<6)
#define SEPG_DB_TABLE__UPDATE               (1<<7)
#define SEPG_DB_TABLE__INSERT               (1<<8)
#define SEPG_DB_TABLE__DELETE               (1<<9)
#define SEPG_DB_TABLE__LOCK                 (1<<10)
#define SEPG_DB_TABLE__TRUNCATE             (1<<11)

#define SEPG_DB_SEQUENCE__CREATE            (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_SEQUENCE__DROP              (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_SEQUENCE__GETATTR           (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_SEQUENCE__SETATTR           (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_SEQUENCE__RELABELFROM       (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_SEQUENCE__RELABELTO         (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_SEQUENCE__GET_VALUE         (1<<6)
#define SEPG_DB_SEQUENCE__NEXT_VALUE        (1<<7)
#define SEPG_DB_SEQUENCE__SET_VALUE         (1<<8)

#define SEPG_DB_PROCEDURE__CREATE           (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_PROCEDURE__DROP             (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_PROCEDURE__GETATTR          (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_PROCEDURE__SETATTR          (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_PROCEDURE__RELABELFROM      (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_PROCEDURE__RELABELTO        (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_PROCEDURE__EXECUTE          (1<<6)
#define SEPG_DB_PROCEDURE__ENTRYPOINT       (1<<7)
#define SEPG_DB_PROCEDURE__INSTALL          (1<<8)

#define SEPG_DB_COLUMN__CREATE              (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_COLUMN__DROP                (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_COLUMN__GETATTR             (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_COLUMN__SETATTR             (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_COLUMN__RELABELFROM         (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_COLUMN__RELABELTO           (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_COLUMN__SELECT              (1<<6)
#define SEPG_DB_COLUMN__UPDATE              (1<<7)
#define SEPG_DB_COLUMN__INSERT              (1<<8)

#define SEPG_DB_TUPLE__RELABELFROM          (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_TUPLE__RELABELTO            (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_TUPLE__SELECT               (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_TUPLE__UPDATE               (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_TUPLE__INSERT               (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_TUPLE__DELETE               (SEPG_DB_DATABASE__DROP)

#define SEPG_DB_BLOB__CREATE                (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_BLOB__DROP                  (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_BLOB__GETATTR               (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_BLOB__SETATTR               (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_BLOB__RELABELFROM           (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_BLOB__RELABELTO             (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_BLOB__READ                  (1<<6)
#define SEPG_DB_BLOB__WRITE                 (1<<7)
#define SEPG_DB_BLOB__IMPORT                (1<<8)
#define SEPG_DB_BLOB__EXPORT                (1<<9)

#define SEPG_DB_LANGUAGE__CREATE            (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_LANGUAGE__DROP              (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_LANGUAGE__GETATTR           (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_LANGUAGE__SETATTR           (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_LANGUAGE__RELABELFROM       (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_LANGUAGE__RELABELTO         (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_LANGUAGE__IMPLEMENT         (1<<6)
#define SEPG_DB_LANGUAGE__EXECUTE           (1<<7)

#define SEPG_DB_VIEW__CREATE                (SEPG_DB_DATABASE__CREATE)
#define SEPG_DB_VIEW__DROP                  (SEPG_DB_DATABASE__DROP)
#define SEPG_DB_VIEW__GETATTR               (SEPG_DB_DATABASE__GETATTR)
#define SEPG_DB_VIEW__SETATTR               (SEPG_DB_DATABASE__SETATTR)
#define SEPG_DB_VIEW__RELABELFROM           (SEPG_DB_DATABASE__RELABELFROM)
#define SEPG_DB_VIEW__RELABELTO             (SEPG_DB_DATABASE__RELABELTO)
#define SEPG_DB_VIEW__EXPAND                (1<<6)

/*
 * hooks.c
 */
extern bool sepgsql_get_permissive(void);
extern bool sepgsql_get_debug_audit(void);

/*
 * selinux.c
 */
extern bool sepgsql_is_enabled(void);
extern int  sepgsql_get_mode(void);
extern int  sepgsql_set_mode(int new_mode);
extern bool sepgsql_getenforce(void);

extern void sepgsql_audit_log(bool denied,
                              const char *scontext,
                              const char *tcontext,
                              uint16 tclass,
                              uint32 audited,
                              const char *audit_name);

extern void sepgsql_compute_avd(const char *scontext,
                                const char *tcontext,
                                uint16 tclass,
                                struct av_decision *avd);

extern char *sepgsql_compute_create(const char *scontext,
                                    const char *tcontext,
                                    uint16 tclass,
                                    const char *objname);

extern bool sepgsql_check_perms(const char *scontext,
                                const char *tcontext,
                                uint16 tclass,
                                uint32 required,
                                const char *audit_name,
                                bool abort_on_violation);

/*
 * uavc.c
 */
#define SEPGSQL_AVC_NOAUDIT         ((void *)(-1))
extern bool sepgsql_avc_check_perms_label(const char *tcontext,
                                          uint16 tclass,
                                          uint32 required,
                                          const char *audit_name,
                                          bool abort_on_violation);
extern bool sepgsql_avc_check_perms(const ObjectAddress *tobject,
                                    uint16 tclass,
                                    uint32 required,
                                    const char *audit_name,
                                    bool abort_on_violation);
extern char *sepgsql_avc_trusted_proc(Oid functionId);
extern void sepgsql_avc_init(void);

/*
 * label.c
 */
extern char *sepgsql_get_client_label(void);
extern void sepgsql_init_client_label(void);
extern char *sepgsql_get_label(Oid classId, Oid objectId, int32 subId);

extern void sepgsql_object_relabel(const ObjectAddress *object,
                                   const char *seclabel);

/*
 * dml.c
 */
extern bool sepgsql_dml_privileges(List *rangeTabls, bool abort_on_violation);

/*
 * database.c
 */
extern void sepgsql_database_post_create(Oid databaseId,
                                         const char *dtemplate);
extern void sepgsql_database_drop(Oid databaseId);
extern void sepgsql_database_relabel(Oid databaseId, const char *seclabel);
extern void sepgsql_database_setattr(Oid databaseId);

/*
 * schema.c
 */
extern void sepgsql_schema_post_create(Oid namespaceId);
extern void sepgsql_schema_drop(Oid namespaceId);
extern void sepgsql_schema_relabel(Oid namespaceId, const char *seclabel);
extern void sepgsql_schema_setattr(Oid namespaceId);
extern bool sepgsql_schema_search(Oid namespaceId, bool abort_on_violation);
extern void sepgsql_schema_add_name(Oid namespaceId);
extern void sepgsql_schema_remove_name(Oid namespaceId);
extern void sepgsql_schema_rename(Oid namespaceId);

/*
 * relation.c
 */
extern void sepgsql_attribute_post_create(Oid relOid, AttrNumber attnum);
extern void sepgsql_attribute_drop(Oid relOid, AttrNumber attnum);
extern void sepgsql_attribute_relabel(Oid relOid, AttrNumber attnum,
                                      const char *seclabel);
extern void sepgsql_attribute_setattr(Oid relOid, AttrNumber attnum);
extern void sepgsql_relation_post_create(Oid relOid);
extern void sepgsql_relation_drop(Oid relOid);
extern void sepgsql_relation_truncate(Oid relOid);
extern void sepgsql_relation_relabel(Oid relOid, const char *seclabel);
extern void sepgsql_relation_setattr(Oid relOid);

/*
 * proc.c
 */
extern void sepgsql_proc_post_create(Oid functionId);
extern void sepgsql_proc_drop(Oid functionId);
extern void sepgsql_proc_relabel(Oid functionId, const char *seclabel);
extern void sepgsql_proc_setattr(Oid functionId);
extern void sepgsql_proc_execute(Oid functionId);

#endif                          /* SEPGSQL_H */