policy_module(postgresql, 1.6.0)

gen_require(`

	class db_database all_db_database_perms;

	class db_table all_db_table_perms;

	class db_procedure all_db_procedure_perms;

	class db_column all_db_column_perms;

	class db_tuple all_db_tuple_perms;

	class db_blob all_db_blob_perms;

')

#################################

#

# Declarations

#

## <desc>

## 

## Allow unprived users to execute DDL statement

## 

## </desc>

gen_tunable(sepgsql_enable_users_ddl, true)

type postgresql_t;

type postgresql_exec_t;

init_daemon_domain(postgresql_t,postgresql_exec_t)

type postgresql_db_t;

files_type(postgresql_db_t)

type postgresql_etc_t;

files_config_file(postgresql_etc_t)

type postgresql_lock_t;

files_lock_file(postgresql_lock_t)

type postgresql_log_t;

logging_log_file(postgresql_log_t)

type postgresql_tmp_t;

files_tmp_file(postgresql_tmp_t)

type postgresql_var_run_t;

files_pid_file(postgresql_var_run_t)

# database clients attribute

attribute sepgsql_client_type;

attribute sepgsql_unconfined_type;

# database objects attribute

attribute sepgsql_database_type;

attribute sepgsql_table_type;

attribute sepgsql_sysobj_table_type;

attribute sepgsql_procedure_type;

attribute sepgsql_blob_type;

attribute sepgsql_module_type;

# database object types

type sepgsql_blob_t;

postgresql_blob_object(sepgsql_blob_t)

type sepgsql_db_t;

postgresql_database_object(sepgsql_db_t)

type sepgsql_fixed_table_t;

postgresql_table_object(sepgsql_fixed_table_t)

type sepgsql_proc_t;

postgresql_procedure_object(sepgsql_proc_t)

type sepgsql_ro_blob_t;

postgresql_blob_object(sepgsql_ro_blob_t)

type sepgsql_ro_table_t;

postgresql_table_object(sepgsql_ro_table_t)

type sepgsql_secret_blob_t;

postgresql_blob_object(sepgsql_secret_blob_t)

type sepgsql_secret_table_t;

postgresql_table_object(sepgsql_secret_table_t)

type sepgsql_sysobj_t;

postgresql_system_table_object(sepgsql_sysobj_t)

type sepgsql_table_t;

postgresql_table_object(sepgsql_table_t)

type sepgsql_trusted_proc_exec_t;

postgresql_procedure_object(sepgsql_trusted_proc_exec_t)

# Trusted Procedure Domain

type sepgsql_trusted_proc_t;

domain_type(sepgsql_trusted_proc_t)

postgresql_unconfined(sepgsql_trusted_proc_t)

role system_r types sepgsql_trusted_proc_t;

########################################

#

# postgresql Local policy

#

allow postgresql_t self:capability { kill dac_override dac_read_search chown fowner fsetid setuid setgid sys_nice sys_tty_config sys_admin };

dontaudit postgresql_t self:capability { sys_tty_config sys_admin };

allow postgresql_t self:process signal_perms;

allow postgresql_t self:fifo_file { getattr read write ioctl };

allow postgresql_t self:file { getattr read };

allow postgresql_t self:sem create_sem_perms;

allow postgresql_t self:shm create_shm_perms;

allow postgresql_t self:tcp_socket create_stream_socket_perms;

allow postgresql_t self:udp_socket create_stream_socket_perms;

allow postgresql_t self:unix_dgram_socket create_socket_perms;

allow postgresql_t self:unix_stream_socket create_stream_socket_perms;

allow postgresql_t self:netlink_selinux_socket create_socket_perms;

allow postgresql_t sepgsql_database_type:db_database *;

type_transition postgresql_t postgresql_t:db_database sepgsql_db_t;

allow postgresql_t sepgsql_module_type:db_database install_module;

# Database/Loadable module

allow sepgsql_database_type sepgsql_module_type:db_database load_module;

allow postgresql_t sepgsql_table_type:{ db_table db_column db_tuple } *;

type_transition postgresql_t sepgsql_database_type:db_table sepgsql_sysobj_t;

allow postgresql_t sepgsql_procedure_type:db_procedure *;

type_transition postgresql_t sepgsql_database_type:db_procedure sepgsql_proc_t;

allow postgresql_t sepgsql_blob_type:db_blob *;

type_transition postgresql_t sepgsql_database_type:db_blob sepgsql_blob_t;

manage_dirs_pattern(postgresql_t,postgresql_db_t,postgresql_db_t)

manage_files_pattern(postgresql_t,postgresql_db_t,postgresql_db_t)

manage_lnk_files_pattern(postgresql_t,postgresql_db_t,postgresql_db_t)

manage_fifo_files_pattern(postgresql_t,postgresql_db_t,postgresql_db_t)

manage_sock_files_pattern(postgresql_t,postgresql_db_t,postgresql_db_t)

files_var_lib_filetrans(postgresql_t, postgresql_db_t, { dir file lnk_file sock_file fifo_file })

allow postgresql_t postgresql_etc_t:dir list_dir_perms;

read_files_pattern(postgresql_t,postgresql_etc_t,postgresql_etc_t)

read_lnk_files_pattern(postgresql_t,postgresql_etc_t,postgresql_etc_t)

allow postgresql_t postgresql_exec_t:lnk_file { getattr read };

can_exec(postgresql_t, postgresql_exec_t )

allow postgresql_t postgresql_lock_t:file manage_file_perms;

files_lock_filetrans(postgresql_t,postgresql_lock_t,file)

manage_files_pattern(postgresql_t,postgresql_log_t,postgresql_log_t)

logging_log_filetrans(postgresql_t,postgresql_log_t,{ file dir })

manage_dirs_pattern(postgresql_t,postgresql_tmp_t,postgresql_tmp_t)

manage_files_pattern(postgresql_t,postgresql_tmp_t,postgresql_tmp_t)

manage_lnk_files_pattern(postgresql_t,postgresql_tmp_t,postgresql_tmp_t)

manage_fifo_files_pattern(postgresql_t,postgresql_tmp_t,postgresql_tmp_t)

manage_sock_files_pattern(postgresql_t,postgresql_tmp_t,postgresql_tmp_t)

files_tmp_filetrans(postgresql_t, postgresql_tmp_t, { dir file sock_file })

fs_tmpfs_filetrans(postgresql_t, postgresql_tmp_t, { dir file lnk_file sock_file fifo_file })

manage_files_pattern(postgresql_t,postgresql_var_run_t,postgresql_var_run_t)

manage_sock_files_pattern(postgresql_t,postgresql_var_run_t,postgresql_var_run_t)

files_pid_filetrans(postgresql_t,postgresql_var_run_t,file)

kernel_read_kernel_sysctls(postgresql_t)

kernel_read_system_state(postgresql_t)

kernel_list_proc(postgresql_t)

kernel_read_all_sysctls(postgresql_t)

kernel_read_proc_symlinks(postgresql_t)

corenet_all_recvfrom_unlabeled(postgresql_t)

corenet_all_recvfrom_netlabel(postgresql_t)

corenet_tcp_sendrecv_all_if(postgresql_t)

corenet_udp_sendrecv_all_if(postgresql_t)

corenet_tcp_sendrecv_all_nodes(postgresql_t)

corenet_udp_sendrecv_all_nodes(postgresql_t)

corenet_tcp_sendrecv_all_ports(postgresql_t)

corenet_udp_sendrecv_all_ports(postgresql_t)

corenet_tcp_bind_all_nodes(postgresql_t)

corenet_tcp_bind_postgresql_port(postgresql_t)

corenet_tcp_connect_auth_port(postgresql_t)

corenet_sendrecv_postgresql_server_packets(postgresql_t)

corenet_sendrecv_auth_client_packets(postgresql_t)

dev_read_sysfs(postgresql_t)

dev_read_urand(postgresql_t)

fs_getattr_all_fs(postgresql_t)

fs_search_auto_mountpoints(postgresql_t)

selinux_get_enforce_mode(postgresql_t)

selinux_validate_context(postgresql_t)

selinux_compute_access_vector(postgresql_t)

selinux_compute_create_context(postgresql_t)

selinux_compute_relabel_context(postgresql_t)

term_use_controlling_term(postgresql_t)

corecmd_exec_bin(postgresql_t)

corecmd_exec_shell(postgresql_t)

domain_dontaudit_list_all_domains_state(postgresql_t)

domain_use_interactive_fds(postgresql_t)

files_dontaudit_search_home(postgresql_t)

files_manage_etc_files(postgresql_t)

files_search_etc(postgresql_t)

files_read_etc_runtime_files(postgresql_t)

files_read_usr_files(postgresql_t)

auth_use_nsswitch(postgresql_t)

init_read_utmp(postgresql_t)

libs_use_ld_so(postgresql_t)

libs_use_shared_libs(postgresql_t)

logging_send_syslog_msg(postgresql_t)

miscfiles_read_localization(postgresql_t)

seutil_libselinux_linked(postgresql_t)

userdom_dontaudit_use_unpriv_user_fds(postgresql_t)

mta_getattr_spool(postgresql_t)

sysadm_dontaudit_search_home_dirs(postgresql_t)

sysadm_dontaudit_use_ttys(postgresql_t)

tunable_policy(`allow_execmem',`

	allow postgresql_t self:process execmem;

')

optional_policy(`

	consoletype_exec(postgresql_t)

')

optional_policy(`

	cron_search_spool(postgresql_t)

	cron_system_entry(postgresql_t,postgresql_exec_t)

')

optional_policy(`

	hostname_exec(postgresql_t)

')

optional_policy(`

	ipsec_match_default_spd(postgresql_t)

')

optional_policy(`

	kerberos_use(postgresql_t)

')

optional_policy(`

	seutil_sigchld_newrole(postgresql_t)

')

optional_policy(`

	udev_read_db(postgresql_t)

')

########################################

#

# Rules common to all clients

#

allow sepgsql_client_type sepgsql_db_t:db_database { getattr access get_param set_param };

type_transition sepgsql_client_type sepgsql_client_type:db_database sepgsql_db_t;

allow sepgsql_client_type sepgsql_fixed_table_t:db_table { getattr use select insert };

allow sepgsql_client_type sepgsql_fixed_table_t:db_column { getattr use select insert };

allow sepgsql_client_type sepgsql_fixed_table_t:db_tuple { use select insert };

allow sepgsql_client_type sepgsql_table_t:db_table { getattr use select update insert delete };

allow sepgsql_client_type sepgsql_table_t:db_column { getattr use select update insert };

allow sepgsql_client_type sepgsql_table_t:db_tuple { use select update insert delete };

allow sepgsql_client_type sepgsql_ro_table_t:db_table { getattr use select };

allow sepgsql_client_type sepgsql_ro_table_t:db_column { getattr use select };

allow sepgsql_client_type sepgsql_ro_table_t:db_tuple { use select };

allow sepgsql_client_type sepgsql_secret_table_t:db_table getattr;

allow sepgsql_client_type sepgsql_secret_table_t:db_column getattr;

allow sepgsql_client_type sepgsql_sysobj_t:db_table { getattr use select };

allow sepgsql_client_type sepgsql_sysobj_t:db_column { getattr use select };

allow sepgsql_client_type sepgsql_sysobj_t:db_tuple { use select };

allow sepgsql_client_type sepgsql_proc_t:db_procedure { getattr execute };

allow sepgsql_client_type sepgsql_trusted_proc_t:db_procedure { getattr execute entrypoint };

allow sepgsql_client_type sepgsql_blob_t:db_blob { create drop getattr setattr read write };

allow sepgsql_client_type sepgsql_ro_blob_t:db_blob { getattr read };

allow sepgsql_client_type sepgsql_secret_blob_t:db_blob getattr;

# The purpose of the dontaudit rule in row-level access control is to prevent a flood of logs.

# If a client tries to SELECT a table including violated tuples, these are filtered from

# the result set as if not exist, but its access denied longs can be recorded within log files.

# In generally, the number of tuples are much larger than the number of columns, tables and so on.

# So, it makes a flood of logs when many tuples are violated.

#

# The default policy does not prevent anything for sepgsql_client_type sepgsql_unconfined_type,

# so we don't need "dontaudit" rules in Type-Enforcement. However, MLS/MCS can prevent them

# to access classified tuples and can make a audit record.

#

# Therefore, the following rule is applied for any domains which can connect SE-PostgreSQL.

dontaudit { postgresql_t sepgsql_client_type sepgsql_unconfined_type } { sepgsql_table_type -sepgsql_sysobj_table_type }:db_tuple { use select update insert delete };

tunable_policy(`sepgsql_enable_users_ddl',`

	allow sepgsql_client_type sepgsql_table_t:db_table  { create drop setattr };

	allow sepgsql_client_type sepgsql_table_t:db_column { create drop setattr };

	allow sepgsql_client_type sepgsql_sysobj_t:db_tuple  { update insert delete };

')

########################################

#

# Unconfined access to this module

#

allow sepgsql_unconfined_type sepgsql_database_type:db_database *;

type_transition sepgsql_unconfined_type sepgsql_unconfined_type:db_database sepgsql_db_t;

type_transition sepgsql_unconfined_type sepgsql_database_type:db_table sepgsql_table_t;

type_transition sepgsql_unconfined_type sepgsql_database_type:db_procedure sepgsql_proc_t;

type_transition sepgsql_unconfined_type sepgsql_database_type:db_blob sepgsql_blob_t;

allow sepgsql_unconfined_type sepgsql_table_type:{ db_table db_column db_tuple } *;

# unconfined domain is not allowed to invoke user defined procedure directly.

# They have to confirm and relabel it at first.

allow sepgsql_unconfined_type { sepgsql_proc_t sepgsql_trusted_proc_t }:db_procedure *;

allow sepgsql_unconfined_type sepgsql_procedure_type:db_procedure { create drop getattr setattr relabelfrom relabelto };

allow sepgsql_unconfined_type sepgsql_blob_type:db_blob *;

allow sepgsql_unconfined_type sepgsql_module_type:db_database install_module;

kernel_relabelfrom_unlabeled_database(sepgsql_unconfined_type)