policy_module(dhcp, 1.11.0)

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

## <desc>
##	<p>
##	Determine whether DHCP daemon
##	can use LDAP backends.
##	</p>
## </desc>
gen_tunable(dhcpd_use_ldap, false)

type dhcpd_t;
type dhcpd_exec_t;
init_daemon_domain(dhcpd_t, dhcpd_exec_t)

type dhcpd_initrc_exec_t;
init_script_file(dhcpd_initrc_exec_t)

type dhcpd_unit_file_t;
systemd_unit_file(dhcpd_unit_file_t)

type dhcpd_state_t;
files_type(dhcpd_state_t)

type dhcpd_tmp_t;
files_tmp_file(dhcpd_tmp_t)

type dhcpd_var_run_t;
files_pid_file(dhcpd_var_run_t)

########################################
#
# Local policy
#

allow dhcpd_t self:capability { chown dac_read_search dac_override fowner sys_chroot net_raw kill setgid setuid setpcap sys_resource };
dontaudit dhcpd_t self:capability { net_admin sys_admin sys_tty_config };
allow dhcpd_t self:process { getcap setcap signal_perms };
allow dhcpd_t self:fifo_file rw_fifo_file_perms;
allow dhcpd_t self:tcp_socket { accept listen };
allow dhcpd_t self:packet_socket create_socket_perms;
allow dhcpd_t self:rawip_socket create_socket_perms;

manage_files_pattern(dhcpd_t, dhcpd_state_t, dhcpd_state_t)
sysnet_dhcp_state_filetrans(dhcpd_t, dhcpd_state_t, file)
allow dhcpd_t dhcpd_state_t:file map;

manage_dirs_pattern(dhcpd_t, dhcpd_tmp_t, dhcpd_tmp_t)
manage_files_pattern(dhcpd_t, dhcpd_tmp_t, dhcpd_tmp_t)
files_tmp_filetrans(dhcpd_t, dhcpd_tmp_t, { dir file })

manage_files_pattern(dhcpd_t, dhcpd_var_run_t, dhcpd_var_run_t)
files_pid_filetrans(dhcpd_t, dhcpd_var_run_t, file)

can_exec(dhcpd_t, dhcpd_exec_t)

kernel_read_system_state(dhcpd_t)
kernel_read_kernel_sysctls(dhcpd_t)
kernel_read_net_sysctls(dhcpd_t)
kernel_read_network_state(dhcpd_t)

corenet_all_recvfrom_netlabel(dhcpd_t)
corenet_tcp_sendrecv_generic_if(dhcpd_t)
corenet_udp_sendrecv_generic_if(dhcpd_t)
corenet_raw_sendrecv_generic_if(dhcpd_t)
corenet_tcp_sendrecv_generic_node(dhcpd_t)
corenet_udp_sendrecv_generic_node(dhcpd_t)
corenet_raw_sendrecv_generic_node(dhcpd_t)
corenet_tcp_sendrecv_all_ports(dhcpd_t)
corenet_udp_sendrecv_all_ports(dhcpd_t)
corenet_tcp_bind_generic_node(dhcpd_t)
corenet_udp_bind_generic_node(dhcpd_t)

corenet_sendrecv_dhcpd_server_packets(dhcpd_t)
corenet_tcp_bind_dhcpd_port(dhcpd_t)
corenet_udp_bind_dhcpd_port(dhcpd_t)

corenet_sendrecv_pxe_server_packets(dhcpd_t)
corenet_udp_bind_pxe_port(dhcpd_t)

corenet_sendrecv_all_client_packets(dhcpd_t)
corenet_tcp_connect_all_ports(dhcpd_t)

corenet_udp_bind_all_unreserved_ports(dhcpd_t)

corecmd_exec_bin(dhcpd_t)

dev_read_sysfs(dhcpd_t)
dev_read_rand(dhcpd_t)
dev_read_urand(dhcpd_t)

fs_getattr_all_fs(dhcpd_t)
fs_search_auto_mountpoints(dhcpd_t)

domain_use_interactive_fds(dhcpd_t)

files_read_etc_runtime_files(dhcpd_t)
files_search_var_lib(dhcpd_t)

auth_use_nsswitch(dhcpd_t)

logging_send_syslog_msg(dhcpd_t)

sysnet_read_config(dhcpd_t)
sysnet_read_dhcp_config(dhcpd_t)

userdom_dontaudit_use_unpriv_user_fds(dhcpd_t)
userdom_dontaudit_search_user_home_dirs(dhcpd_t)

tunable_policy(`dhcpd_use_ldap',`
    allow dhcpd_t self:tcp_socket create_socket_perms;
')

tunable_policy(`dhcpd_use_ldap',`
    corenet_tcp_sendrecv_generic_if(dhcpd_t)
    corenet_tcp_sendrecv_generic_node(dhcpd_t)
    corenet_tcp_sendrecv_ldap_port(dhcpd_t)
    corenet_tcp_connect_ldap_port(dhcpd_t)
    corenet_sendrecv_ldap_client_packets(dhcpd_t)
')

optional_policy(`
    tunable_policy(`dhcpd_use_ldap',`
	    ldap_read_certs(dhcpd_t)
    ')
')

ifdef(`distro_gentoo',`
	allow dhcpd_t self:capability { chown dac_read_search  setgid setuid sys_chroot };
')

optional_policy(`
	# used for dynamic DNS
    bind_map_dnssec_keys(dhcpd_t)
	bind_read_dnssec_keys(dhcpd_t)
')

optional_policy(`
	cobbler_dontaudit_rw_log(dhcpd_t)
')

optional_policy(`
	dbus_system_bus_client(dhcpd_t)
	dbus_connect_system_bus(dhcpd_t)
')

optional_policy(`
	seutil_sigchld_newrole(dhcpd_t)
')

optional_policy(`
	udev_read_db(dhcpd_t)
')
