#DESC DHCPC - DHCP client

#

# Authors:  Wayne Salamon (NAI Labs) <wsalamon@tislabs.com>

#           Russell Coker <russell@coker.com.au>

# X-Debian-Packages: pump dhcp-client udhcpc

#

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

#

# Rules for the dhcpc_t domain.

#

# dhcpc_t is the domain for the client side of DHCP. dhcpcd, the DHCP 

# network configurator daemon started by /etc/sysconfig/network-scripts 

# rc scripts, runs in this domain.

# dhcpc_exec_t is the type of the dhcpcd executable.

# The dhcpc_t can be used for other DHCPC related files as well.

#

type dhcpc_port_t, port_type, reserved_port_type;

daemon_domain(dhcpc)

# for SSP

allow dhcpc_t urandom_device_t:chr_file read;

can_network(dhcpc_t)

can_ypbind(dhcpc_t)

allow dhcpc_t self:unix_dgram_socket create_socket_perms;

allow dhcpc_t self:unix_stream_socket create_socket_perms;

allow dhcpc_t self:fifo_file rw_file_perms;

allow dhcpc_t devpts_t:dir search;

# for localization

allow dhcpc_t lib_t:file { getattr read };

ifdef(`consoletype.te', `

domain_auto_trans(dhcpc_t, consoletype_exec_t, consoletype_t)

')

ifdef(`nscd.te', `

domain_auto_trans(dhcpc_t, nscd_exec_t, nscd_t)

')

ifdef(`cardmgr.te', `

domain_auto_trans(cardmgr_t, dhcpc_exec_t, dhcpc_t)

allow cardmgr_t dhcpc_var_run_t:file { getattr read };

allow cardmgr_t dhcpc_t:process signal_perms;

')

ifdef(`hotplug.te', `

domain_auto_trans(hotplug_t, dhcpc_exec_t, dhcpc_t)

allow hotplug_t dhcpc_t:process signal_perms;

allow hotplug_t dhcpc_var_run_t:file { getattr read };

allow hotplug_t dhcp_etc_t:file rw_file_perms;

allow dhcpc_t hotplug_etc_t:dir { getattr search };

ifdef(`distro_redhat', `

domain_auto_trans(dhcpc_t, syslogd_exec_t, syslogd_t)

')

')dnl end hotplug.te

# for the dhcp client to run ping to check IP addresses

ifdef(`ping.te', `

domain_auto_trans(dhcpc_t, ping_exec_t, ping_t)

ifdef(`hotplug.te', `

allow ping_t hotplug_t:fd use;

') dnl end if hotplug

ifdef(`cardmgr.te', `

allow ping_t cardmgr_t:fd use;

') dnl end if cardmgr

') dnl end if ping

ifdef(`dhcpd.te', `', `

type dhcp_state_t, file_type, sysadmfile;

type dhcp_etc_t, file_type, sysadmfile, usercanread; 

typealias dhcp_etc_t alias { etc_dhcp_t etc_dhcpc_t etc_dhcpd_t };

')

type dhcpc_state_t, file_type, sysadmfile;

allow dhcpc_t etc_t:lnk_file read;

allow dhcpc_t { etc_t etc_runtime_t }:file { getattr read };

allow dhcpc_t proc_net_t:dir search;

allow dhcpc_t { proc_t proc_net_t }:file { getattr read };

allow dhcpc_t self:file { getattr read };

read_sysctl(dhcpc_t)

allow dhcpc_t userdomain:fd use;

ifdef(`run_init.te', `

allow dhcpc_t run_init_t:fd use;

')

# Use capabilities

allow dhcpc_t self:capability { dac_override fsetid net_admin net_raw net_bind_service sys_resource sys_tty_config };

# for access("/etc/bashrc", X_OK) on Red Hat

dontaudit dhcpc_t self:capability { dac_read_search sys_module };

# for udp port 68

allow dhcpc_t dhcpc_port_t:udp_socket name_bind;

# Allow read/write to /etc/resolv.conf and /etc/ntp.conf. Note that any files

# in /etc created by dhcpcd will be labelled net_conf_t.

file_type_auto_trans(dhcpc_t, etc_t, net_conf_t, file)

# Allow access to the dhcpc file types

r_dir_file(dhcpc_t, dhcp_etc_t)

allow dhcpc_t sbin_t:dir search;

can_exec(dhcpc_t, { dhcpc_exec_t dhcp_etc_t sbin_t })

ifdef(`distro_redhat', `

can_exec(dhcpc_t, etc_t)

allow initrc_t dhcp_etc_t:file rw_file_perms;

')

ifdef(`ifconfig.te', `

domain_auto_trans(dhcpc_t, ifconfig_exec_t, ifconfig_t)

')dnl end if def ifconfig

tmp_domain(dhcpc)

# Allow dhcpc_t to use packet sockets

allow dhcpc_t self:packet_socket create_socket_perms;

allow dhcpc_t var_lib_t:dir search;

file_type_auto_trans(dhcpc_t, dhcp_state_t, dhcpc_state_t, file)

allow dhcpc_t bin_t:dir search;

allow dhcpc_t bin_t:lnk_file read;

can_exec(dhcpc_t, { bin_t shell_exec_t })

ifdef(`hostname.te', `

domain_auto_trans(dhcpc_t, hostname_exec_t, hostname_t)

')

dontaudit dhcpc_t { ttyfile ptyfile tty_device_t }:chr_file { read write };

allow dhcpc_t { userdomain kernel_t }:fd use;

allow dhcpc_t home_root_t:dir search;

allow initrc_t dhcpc_state_t:file { getattr read };

dontaudit dhcpc_t var_lock_t:dir search;

dontaudit dhcpc_t selinux_config_t:dir search;

allow dhcpc_t self:netlink_route_socket r_netlink_socket_perms;

dontaudit dhcpc_t domain:dir getattr;

allow dhcpc_t initrc_var_run_t:file rw_file_perms;

#

# dhclient sometimes starts ypbind and ntdp

#

can_exec(dhcpc_t, initrc_exec_t)

ifdef(`ypbind.te', `

domain_auto_trans(dhcpc_t, ypbind_exec_t, ypbind_t)

')

ifdef(`ntpd.te', `

domain_auto_trans(dhcpc_t, ntpd_exec_t, ntpd_t)

')