selinux-policy/refpolicy/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">
##     The type of the process performing this action.
## </param>
#
interface(`sysnet_domtrans_dhcpc',`
	gen_require(`
		type dhcpc_t, dhcpc_exec_t;
	')

	corecmd_search_sbin($1)
	domain_auto_trans($1, dhcpc_exec_t, dhcpc_t)

	allow $1 dhcpc_t:fd use;
	allow dhcpc_t $1:fd use;
	allow dhcpc_t $1:fifo_file rw_file_perms;
	allow dhcpc_t $1:process sigchld;
')

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

	sysnet_domtrans_dhcpc($1)
	role $2 types dhcpc_t;
	allow dhcpc_t $3:chr_file { getattr read write ioctl };
')

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

	allow $1 dhcpc_t:process signal;
')

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

	allow $1 dhcpc_state_t:file { getattr read };
')

#######################################
## <summary>
##	Allow network init to read network config files.
## </summary>
## <param name="domain">
##	The type of the process performing this action.
## </param>
#
interface(`sysnet_read_config',`
	gen_require(`
		type net_conf_t;
	')

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

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

	files_create_etc_config($1,net_conf_t,file)
')

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

	allow $1 net_conf_t:file create_file_perms;
')

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

	files_list_pids($1)
	allow $1 dhcpc_var_run_t:file { getattr read };
')

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

	corecmd_search_sbin($1)
	domain_auto_trans($1, ifconfig_exec_t, ifconfig_t)

	allow $1 ifconfig_t:fd use;
	allow ifconfig_t $1:fd use;
	allow ifconfig_t $1:fifo_file rw_file_perms;
	allow ifconfig_t $1:process sigchld;
')

########################################
## <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">
##	The type of the process performing this action.
## </param>
## <param name="role">
##	The role to be allowed the ifconfig domain.
## </param>
## <param name="terminal">
##	The type of the terminal allow the ifconfig domain to use.
## </param>
#
interface(`sysnet_run_ifconfig',`
	gen_require(`
		type ifconfig_t;
	')

	corecmd_search_sbin($1)
	sysnet_domtrans_ifconfig($1)
	role $2 types ifconfig_t;
	allow ifconfig_t $3:chr_file rw_term_perms;
')

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

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

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

	files_search_etc($1)
	allow $1 dhcp_etc_t:dir search;
	allow $1 dhcp_etc_t:file { getattr read };
')

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

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

########################################
## <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">
##	Domain allowed access.
## </param>
## <param name="file_type">
##	The type of the object to be created
## </param>
## <param name="object_class" optional="true">
##	The object class.  If not specified, file is used.
## </param>
#
interface(`sysnet_create_dhcp_state',`
	gen_require(`
		type dhcp_state_t;
	')

	files_search_var_lib($1)
	allow $1 dhcp_state_t:dir rw_dir_perms;
	ifelse(`$3',`',`
		type_transition $1 dhcp_state_t:file $2;
	',`
		type_transition $1 dhcp_state_t:$3 $2;
	')
')

########################################
## <summary>
##	Perform a DNS name resolution.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
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;
	corenet_tcp_sendrecv_all_if($1)
	corenet_udp_sendrecv_all_if($1)
	corenet_raw_sendrecv_all_if($1)
	corenet_tcp_sendrecv_all_nodes($1)
	corenet_udp_sendrecv_all_nodes($1)
	corenet_raw_sendrecv_all_nodes($1)
	corenet_tcp_sendrecv_all_ports($1)
	corenet_udp_sendrecv_dns_port($1)
	corenet_tcp_bind_all_nodes($1)
	corenet_udp_bind_all_nodes($1)
	corenet_tcp_connect_dns_port($1)

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

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

	allow $1 self:tcp_socket create_socket_perms;

	corenet_tcp_sendrecv_all_if($1)
	corenet_raw_sendrecv_all_if($1)
	corenet_tcp_sendrecv_all_nodes($1)
	corenet_raw_sendrecv_all_nodes($1)
	corenet_tcp_sendrecv_ldap_port($1)
	corenet_tcp_bind_all_nodes($1)
	corenet_tcp_connect_ldap_port($1)

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

########################################
## <summary>
##	Connect and use remote port mappers.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </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_tcp_sendrecv_all_if($1)
	corenet_udp_sendrecv_all_if($1)
	corenet_raw_sendrecv_all_if($1)
	corenet_tcp_sendrecv_all_nodes($1)
	corenet_udp_sendrecv_all_nodes($1)
	corenet_raw_sendrecv_all_nodes($1)
	corenet_tcp_sendrecv_portmap_port($1)
	corenet_udp_sendrecv_portmap_port($1)
	corenet_tcp_bind_all_nodes($1)
	corenet_udp_bind_all_nodes($1)
	corenet_tcp_connect_portmap_port($1)

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