selinux-policy/refpolicy/policy/modules/services/dbus.if

## <summary>Desktop messaging bus</summary>

#######################################
## <summary>
##	The per user domain template for the dbus module.
## </summary>
## <desc>
##	<p>
##	This template creates a derived domain which is
##	used for the user dbus.
##	</p>
##	<p>
##	This template is invoked automatically for each user, and
##	generally does not need to be invoked directly
##	by policy writers.
##	</p>
## </desc>
## <param name="userdomain_prefix">
##	The prefix of the user domain (e.g., user
##	is the prefix for user_t).
## </param>
## <param name="user_domain">
##	The type of the user domain.
## </param>
## <param name="user_role">
##	The role associated with the user domain.
## </param>
#
template(`dbus_per_userdomain_template',`
	gen_require(`
		type system_dbusd_t, dbusd_etc_t;
		type system_dbusd_exec_t;
		class dbus { send_msg acquire_svc };
	')

	##############################
	#
	# Delcarations
	#
	type $1_dbusd_t;
	domain_type($1_dbusd_t)
	role $3 types $1_dbusd_t;

	type $1_dbusd_$1_t;

	type $1_dbusd_tmp_t;
	files_tmp_file($1_dbusd_tmp_t)

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

	allow $1_dbusd_t self:process { getattr sigkill signal };
	allow $1_dbusd_t self:file { getattr read write };
	allow $1_dbusd_t self:dbus { send_msg acquire_svc };
	allow $1_dbusd_t self:unix_stream_socket create_stream_socket_perms;
	allow $1_dbusd_t self:unix_dgram_socket create_socket_perms;
	allow $1_dbusd_t self:tcp_socket create_stream_socket_perms;
	allow $1_dbusd_t self:netlink_audit_socket { create_netlink_socket_perms nlmsg_relay };
	allow $1_dbusd_t self:netlink_selinux_socket create_socket_perms;

	# For connecting to the bus
	allow $2 $1_dbusd_t:unix_stream_socket connectto;
	type_change $2 $1_dbusd_t:dbus $1_dbusd_$1_t;

	# SE-DBus specific permissions
	allow $1_dbusd_$1_t { $1_dbusd_t self }:dbus send_msg;
	allow $2 $1_dbusd_t:dbus { send_msg acquire_svc };
	allow $1_t system_dbusd_t:dbus { send_msg acquire_svc };

	allow $1_dbusd_t dbusd_etc_t:dir r_dir_perms;
	allow $1_dbusd_t dbusd_etc_t:file r_file_perms;
	allow $1_dbusd_t dbusd_etc_t:lnk_file { getattr read };

	allow $1_dbusd_t $1_dbusd_tmp_t:dir create_dir_perms;
	allow $1_dbusd_t $1_dbusd_tmp_t:file create_file_perms;
	files_create_tmp_files($1_dbusd_t, $1_dbusd_tmp_t, { file dir })

	domain_auto_trans($2, system_dbusd_exec_t, $1_dbusd_t)
	allow $2 $1_dbusd_t:fd use;
	allow $1_dbusd_t $2:fd use;
	allow $1_dbusd_t $2:fifo_file rw_file_perms;
	allow $1_dbusd_t $2:process sigchld;

	allow $2 $1_dbusd_t:process { sigkill signal };

	kernel_read_system_state($1_dbusd_t)
	kernel_read_kernel_sysctl($1_dbusd_t)

	corenet_tcp_sendrecv_all_if($1_dbusd_t)
	corenet_raw_sendrecv_all_if($1_dbusd_t)
	corenet_tcp_sendrecv_all_nodes($1_dbusd_t)
	corenet_raw_sendrecv_all_nodes($1_dbusd_t)
	corenet_tcp_sendrecv_all_ports($1_dbusd_t)
	corenet_tcp_bind_all_nodes($1_dbusd_t)
	corenet_tcp_bind_reserved_port($1_dbusd_t)

	dev_read_urand($1_dbusd_t)

	selinux_get_fs_mount($1_dbusd_t)
	selinux_validate_context($1_dbusd_t)
	selinux_compute_access_vector($1_dbusd_t)
	selinux_compute_create_context($1_dbusd_t)
	selinux_compute_relabel_context($1_dbusd_t)
	selinux_compute_user_contexts($1_dbusd_t)

	corecmd_list_bin($1_dbusd_t)
	corecmd_read_bin_symlink($1_dbusd_t)
	corecmd_read_bin_file($1_dbusd_t)
	corecmd_read_bin_pipe($1_dbusd_t)
	corecmd_read_bin_socket($1_dbusd_t)
	corecmd_list_sbin($1_dbusd_t)
	corecmd_read_sbin_symlink($1_dbusd_t)
	corecmd_read_sbin_file($1_dbusd_t)
	corecmd_read_sbin_pipe($1_dbusd_t)
	corecmd_read_sbin_socket($1_dbusd_t)

	files_read_etc_files($1_dbusd_t)
	files_list_home($1_dbusd_t)
	files_read_usr_files($1_dbusd_t)
	files_dontaudit_search_var($1_dbusd_t)

	libs_use_ld_so($1_dbusd_t)
	libs_use_shared_libs($1_dbusd_t)

	logging_send_syslog_msg($1_dbusd_t)

	miscfiles_read_localization($1_dbusd_t)

	seutil_read_config($1_dbusd_t)
	seutil_read_default_contexts($1_dbusd_t)

	sysnet_read_config($1_dbusd_t)

	tunable_policy(`read_default_t',`
		files_list_default($1_dbusd_t)
		files_read_default_files($1_dbusd_t)
		files_read_default_symlinks($1_dbusd_t)
		files_read_default_sockets($1_dbusd_t)
		files_read_default_pipes($1_dbusd_t)
	')

	optional_policy(`authlogin.te',`
		auth_read_pam_console_data($1_dbusd_t)
	')

	optional_policy(`nscd.te',`
		nscd_use_socket($1_dbusd_t)
	')

	ifdef(`TODO',`
	ifdef(`xdm.te', `
	can_pipe_xdm($1_dbusd_t)
	')
	')
')

#######################################
## <summary>
##	Template for creating connections to
##	the system DBUS.
## </summary>
## <param name="domain_prefix">
##	The prefix of the domain (e.g., user
##	is the prefix for user_t).
## </param>
## <param name="domain">
##	The type of the domain.
## </param>
#
template(`dbus_system_bus_client_template',`
	gen_require(`
		type system_dbusd_t, system_dbusd_t;
		type system_dbusd_var_run_t;
		class dir search;
		class sock_file write;
		class unix_stream_socket connectto;
		class dbus send_msg;
	')

	type $1_dbusd_system_t;
	type_change $2 system_dbusd_t:dbus $1_dbusd_system_t;

	# SE-DBus specific permissions
	allow $1_dbusd_system_t { system_dbusd_t self }:dbus send_msg;

	# For connecting to the bus
	files_search_pids($2)
	allow $2 system_dbusd_var_run_t:dir search;
	allow $2 system_dbusd_var_run_t:sock_file write;
	allow $2 system_dbusd_t:unix_stream_socket connectto;
')

########################################
## <summary>
##	Connect to the the system DBUS
##	for service (acquire_svc).
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`dbus_connect_system_bus',`
	gen_require(`
		type system_dbusd_t;
		class dbus acquire_svc;
	')

	allow $1 system_dbusd_t:dbus acquire_svc;
')

########################################
## <summary>
##	Send a message on the system DBUS.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`dbus_send_system_bus_msg',`
	gen_require(`
		type system_dbusd_t;
		class dbus send_msg;
	')

	allow $1 system_dbusd_t:dbus send_msg;
')

########################################
## <summary>
##	Allow unconfined access to the system DBUS.
## </summary>
## <param name="domain">
##	Domain allowed access.
## </param>
#
interface(`dbus_system_bus_unconfined',`
	gen_require(`
		type system_dbusd_t;
		class dbus all_dbus_perms;
	')

	allow $1 system_dbusd_t:dbus *;
')