policy_module(pdns, 1.0.2)

########################################
#
# Declarations
#

## <desc>
## <p>
## Allow PowerDNS to connect to databases over the network.
## </p>
## </desc>
gen_tunable(pdns_can_network_connect_db, false)

type pdns_t;
type pdns_exec_t;
init_daemon_domain(pdns_t, pdns_exec_t)
init_nnp_daemon_domain(pdns_t)

type pdns_unit_file_t;
systemd_unit_file(pdns_unit_file_t)

type pdns_conf_t;
files_config_file(pdns_conf_t)

type pdns_var_lib_t;
files_type(pdns_var_lib_t)

type pdns_var_run_t;
files_pid_file(pdns_var_run_t)

type pdns_control_t;
type pdns_control_exec_t;
init_system_domain(pdns_control_t, pdns_control_exec_t)

########################################
#
# pdns_t local policy
#

allow pdns_t self:capability { setuid setgid chown };
allow pdns_t self:tcp_socket create_stream_socket_perms;
allow pdns_t self:udp_socket create_socket_perms;
allow pdns_t self:unix_dgram_socket create_socket_perms;
pdns_read_config(pdns_t)

kernel_read_network_state(pdns_t)
kernel_read_system_state(pdns_t)

corenet_tcp_bind_dns_port(pdns_t)
corenet_tcp_bind_transproxy_port(pdns_t)
corenet_tcp_connect_all_ports(pdns_t)
corenet_udp_bind_all_ports(pdns_t)

manage_dirs_pattern(pdns_t, pdns_var_lib_t, pdns_var_lib_t)
manage_files_pattern(pdns_t, pdns_var_lib_t, pdns_var_lib_t)
files_var_lib_filetrans(pdns_t, pdns_var_lib_t, { dir file })
allow pdns_t pdns_var_lib_t:file map;

files_pid_filetrans(pdns_t, pdns_var_run_t, { file sock_file })
manage_files_pattern(pdns_t, pdns_var_run_t, pdns_var_run_t)
manage_sock_files_pattern(pdns_t, pdns_var_run_t, pdns_var_run_t)

optional_policy(`
	auth_use_nsswitch(pdns_t)
')

optional_policy(`
	kerberos_read_keytab(pdns_t)
')

optional_policy(`
	logging_send_syslog_msg(pdns_t)
')

########################################
#
# pdns_control_t local policy
#

pdns_read_config(pdns_control_t)
stream_connect_pattern(pdns_control_t, pdns_var_run_t, pdns_var_run_t, pdns_t)


########################################
#
# optional policy
#

optional_policy(`
	mysql_read_config(pdns_t)
	mysql_stream_connect(pdns_t)
	tunable_policy(`pdns_can_network_connect_db',`
		mysql_tcp_connect(pdns_t)
        ')
')

optional_policy(`
	postgresql_stream_connect(pdns_t)
	tunable_policy(`pdns_can_network_connect_db',`
                postgresql_tcp_connect(pdns_t)
        ')
')