selinux-policy/policy/modules/system/sysnetwork.if

## <summary>Policy for network configuration: ifconfig and dhcp client.</summary>

#######################################
## <summary>
##	Execute dhcp client in dhcpc domain.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`sysnet_domtrans_dhcpc',`
	gen_require(`
		type dhcpc_t, dhcpc_exec_t;
	')

	corecmd_search_bin($1)
	domtrans_pattern($1, dhcpc_exec_t, dhcpc_t)
')

########################################
## <summary>
##	Execute DHCP clients in the dhcpc domain, and
##	allow the specified role the dhcpc domain.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`sysnet_run_dhcpc',`
	gen_require(`
		type dhcpc_t;
	')

	sysnet_domtrans_dhcpc($1)
	role $2 types dhcpc_t;

	modutils_run_insmod(dhcpc_t, $2)

	sysnet_run_ifconfig(dhcpc_t, $2)

	optional_policy(`
		consoletype_run(dhcpc_t, $2)
	')

	optional_policy(`
		hostname_run(dhcpc_t, $2)
	')

	optional_policy(`
		netutils_run(dhcpc_t, $2)
		netutils_run_ping(dhcpc_t, $2)
	')
')

########################################
## <summary>
##	Do not audit attempts to use
##	the dhcp file descriptors.
## </summary>
## <param name="domain">
##	<summary>
##	The domain sending the SIGCHLD.
##	</summary>
## </param>
#
interface(`sysnet_dontaudit_use_dhcpc_fds',`
	gen_require(`
		type dhcpc_t;
	')

	dontaudit $1 dhcpc_t:fd use;
')

########################################
## <summary>
##	Send a SIGCHLD signal to the dhcp client.
## </summary>
## <param name="domain">
##	<summary>
##	The domain sending the SIGCHLD.
##	</summary>
## </param>
#
interface(`sysnet_sigchld_dhcpc',`
	gen_require(`
		type dhcpc_t;
	')

	allow $1 dhcpc_t:process sigchld;
')

########################################
## <summary>
##	Send a kill signal to the dhcp client.
## </summary>
## <param name="domain">
##	<summary>
##	The domain sending the SIGKILL.
##	</summary>
## </param>
## <rolecap/>
#
interface(`sysnet_kill_dhcpc',`
	gen_require(`
		type dhcpc_t;
	')

	allow $1 dhcpc_t:process sigkill;
')

########################################
## <summary>
##	Send a SIGSTOP signal to the dhcp client.
## </summary>
## <param name="domain">
##	<summary>
##	The domain sending the SIGSTOP.
##	</summary>
## </param>
#
interface(`sysnet_sigstop_dhcpc',`
	gen_require(`
		type dhcpc_t;
	')

	allow $1 dhcpc_t:process sigstop;
')

########################################
## <summary>
##	Send a null signal to the dhcp client.
## </summary>
## <param name="domain">
##	<summary>
##	The domain sending the null signal.
##	</summary>
## </param>
#
interface(`sysnet_signull_dhcpc',`
	gen_require(`
		type dhcpc_t;
	')

	allow $1 dhcpc_t:process signull;
')

########################################
## <summary>
##	Send a generic signal to the dhcp client.
## </summary>
## <param name="domain">
##	<summary>
##	The domain sending the signal.
##	</summary>
## </param>
## <rolecap/>
#
interface(`sysnet_signal_dhcpc',`
	gen_require(`
		type dhcpc_t;
	')

	allow $1 dhcpc_t:process signal;
')

########################################
## <summary>
##	Send and receive messages from
##	dhcpc over dbus.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_dbus_chat_dhcpc',`
	gen_require(`
		type dhcpc_t;
		class dbus send_msg;
	')

	allow $1 dhcpc_t:dbus send_msg;
	allow dhcpc_t $1:dbus send_msg;
')

########################################
## <summary>
##	Read and write dhcp configuration files.
## </summary>
## <param name="domain">
##	<summary>
##	The domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_rw_dhcp_config',`
	gen_require(`
		type dhcp_etc_t;
	')

	files_search_etc($1)
	allow $1 dhcp_etc_t:file rw_file_perms;
')

########################################
## <summary>
##	Read dhcp client state files.
## </summary>
## <param name="domain">
##	<summary>
##	The domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_read_dhcpc_state',`
	gen_require(`
		type dhcpc_state_t;
	')

	read_files_pattern($1, dhcpc_state_t, dhcpc_state_t)
')

#######################################
## <summary>
##	Delete the dhcp client state files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_delete_dhcpc_state',`
	gen_require(`
		type dhcpc_state_t;
	')

	delete_files_pattern($1, dhcpc_state_t, dhcpc_state_t)
')

#######################################
## <summary>
##	Set the attributes of network config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_setattr_config',`
	gen_require(`
		type net_conf_t;
	')

	files_search_etc($1)
	allow $1 net_conf_t:file setattr;
')

#######################################
## <summary>
##	Read network config files.
## </summary>
## <desc>
##	<p>
##	Allow the specified domain to read the
##	general network configuration files.  A
##	common example of this is the
##	/etc/resolv.conf file, which has domain
##	name system (DNS) server IP addresses.
##	Typically, most networking processes will
##	require	the access provided by this interface.
##	</p>
##	<p>
##	Higher-level interfaces which involve
##	networking will generally call this interface,
##	for example:
##	</p>
##	<ul>
##		<li>sysnet_dns_name_resolve()</li>
##		<li>sysnet_use_ldap()</li>
##		<li>sysnet_use_portmap()</li>
##	</ul>
## </desc>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_read_config',`
	gen_require(`
		type net_conf_t;
	')

	files_search_etc($1)
	allow $1 net_conf_t:file read_file_perms;

	ifdef(`distro_redhat',`
		allow $1 net_conf_t:dir list_dir_perms;
		read_files_pattern($1, net_conf_t, net_conf_t)
	')
')

#######################################
## <summary>
##	Do not audit attempts to read network config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`sysnet_dontaudit_read_config',`
	gen_require(`
		type net_conf_t;
	')

	dontaudit $1 net_conf_t:file read_file_perms;
')

#######################################
## <summary>
##	Write network config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_write_config',`
	gen_require(`
		type net_conf_t;
	')

	files_search_etc($1)
	allow $1 net_conf_t:file write_file_perms;
')

#######################################
## <summary>
##	Create network config files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_create_config',`
	gen_require(`
		type net_conf_t;
	')

	files_search_etc($1)
	allow $1 net_conf_t:file create_file_perms;
')

#######################################
## <summary>
##	Create files in /etc with the type used for
##	the network config files.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`sysnet_etc_filetrans_config',`
	gen_require(`
		type net_conf_t;
	')

	files_etc_filetrans($1, net_conf_t, file)
')

#######################################
## <summary>
##	Create, read, write, and delete network config files.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`sysnet_manage_config',`
	gen_require(`
		type net_conf_t;
	')

	allow $1 net_conf_t:file manage_file_perms;

	ifdef(`distro_redhat',`
		manage_files_pattern($1, net_conf_t, net_conf_t)
	')
')

#######################################
## <summary>
##	Read the dhcp client pid file.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`sysnet_read_dhcpc_pid',`
	gen_require(`
		type dhcpc_var_run_t;
	')

	files_list_pids($1)
	allow $1 dhcpc_var_run_t:file read_file_perms;
')

#######################################
## <summary>
##	Delete the dhcp client pid file.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`sysnet_delete_dhcpc_pid',`
	gen_require(`
		type dhcpc_var_run_t;
	')

	allow $1 dhcpc_var_run_t:file unlink;
')

#######################################
## <summary>
##	Execute ifconfig in the ifconfig domain.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
#
interface(`sysnet_domtrans_ifconfig',`
	gen_require(`
		type ifconfig_t, ifconfig_exec_t;
	')

	corecmd_search_bin($1)
	domtrans_pattern($1, ifconfig_exec_t, ifconfig_t)
')

########################################
## <summary>
##	Execute ifconfig in the ifconfig domain, and
##	allow the specified role the ifconfig domain,
##	and use the caller's terminal.
## </summary>
## <param name="domain">
##	<summary>
##	The type of the process performing this action.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	Role allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`sysnet_run_ifconfig',`
	gen_require(`
		type ifconfig_t;
	')

	corecmd_search_bin($1)
	sysnet_domtrans_ifconfig($1)
	role $2 types ifconfig_t;
')

#######################################
## <summary>
##	Execute ifconfig in the caller domain.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_exec_ifconfig',`
	gen_require(`
		type ifconfig_exec_t;
	')

	corecmd_search_bin($1)
	can_exec($1, ifconfig_exec_t)
')

########################################
## <summary>
##	Send a generic signal to ifconfig.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`sysnet_signal_ifconfig',`
	gen_require(`
		type ifconfig_t;
	')

	allow $1 ifconfig_t:process signal;
')

########################################
## <summary>
##	Read the DHCP configuration files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_read_dhcp_config',`
	gen_require(`
		type dhcp_etc_t;
	')

	files_search_etc($1)
	allow $1 dhcp_etc_t:dir list_dir_perms;
	read_files_pattern($1, dhcp_etc_t, dhcp_etc_t)
')

########################################
## <summary>
##	Search the DHCP state data directory.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_search_dhcp_state',`
	gen_require(`
		type dhcp_state_t;
	')

	files_search_var_lib($1)
	allow $1 dhcp_state_t:dir search_dir_perms;
')

########################################
## <summary>
##	Create DHCP state data.
## </summary>
## <desc>
##	<p>
##	Create DHCP state data.
##	</p>
##	<p>
##	This is added for DHCP server, as
##	the server and client put their state
##	files in the same directory.
##	</p>
## </desc>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="file_type">
##	<summary>
##	The type of the object to be created
##	</summary>
## </param>
## <param name="object_class">
##	<summary>
##	The object class.
##	</summary>
## </param>
#
interface(`sysnet_dhcp_state_filetrans',`
	gen_require(`
		type dhcp_state_t;
	')

	files_search_var_lib($1)
	filetrans_pattern($1, dhcp_state_t, $2, $3)
')

########################################
## <summary>
##	Perform a DNS name resolution.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`sysnet_dns_name_resolve',`
	gen_require(`
		type net_conf_t;
	')

	allow $1 self:tcp_socket create_socket_perms;
	allow $1 self:udp_socket create_socket_perms;
	allow $1 self:netlink_route_socket r_netlink_socket_perms;

	corenet_all_recvfrom_unlabeled($1)
	corenet_all_recvfrom_netlabel($1)
	corenet_tcp_sendrecv_generic_if($1)
	corenet_udp_sendrecv_generic_if($1)
	corenet_tcp_sendrecv_generic_node($1)
	corenet_udp_sendrecv_generic_node($1)
	corenet_tcp_sendrecv_dns_port($1)
	corenet_udp_sendrecv_dns_port($1)
	corenet_tcp_connect_dns_port($1)
	corenet_sendrecv_dns_client_packets($1)

	sysnet_read_config($1)

	optional_policy(`
		avahi_stream_connect($1)
	')

	optional_policy(`
		nscd_socket_use($1)
	')
')

########################################
## <summary>
##	Connect and use a LDAP server.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_use_ldap',`
	gen_require(`
		type net_conf_t;
	')		

	allow $1 self:tcp_socket create_socket_perms;

	corenet_all_recvfrom_unlabeled($1)
	corenet_all_recvfrom_netlabel($1)
	corenet_tcp_sendrecv_generic_if($1)
	corenet_tcp_sendrecv_generic_node($1)
	corenet_tcp_sendrecv_ldap_port($1)
	corenet_tcp_connect_ldap_port($1)
	corenet_sendrecv_ldap_client_packets($1)

	sysnet_read_config($1)
')

########################################
## <summary>
##	Connect and use remote port mappers.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`sysnet_use_portmap',`
	gen_require(`
		type net_conf_t;
	')		

	allow $1 self:tcp_socket create_socket_perms;
	allow $1 self:udp_socket create_socket_perms;

	corenet_all_recvfrom_unlabeled($1)
	corenet_all_recvfrom_netlabel($1)
	corenet_tcp_sendrecv_generic_if($1)
	corenet_udp_sendrecv_generic_if($1)
	corenet_tcp_sendrecv_generic_node($1)
	corenet_udp_sendrecv_generic_node($1)
	corenet_tcp_sendrecv_portmap_port($1)
	corenet_udp_sendrecv_portmap_port($1)
	corenet_tcp_connect_portmap_port($1)
	corenet_sendrecv_portmap_client_packets($1)

	sysnet_read_config($1)
')