selinux-policy/policy/modules/services/cups.te

policy_module(cups, 1.12.2)

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

type cupsd_config_t;
type cupsd_config_exec_t;
init_daemon_domain(cupsd_config_t, cupsd_config_exec_t)

type cupsd_config_var_run_t;
files_pid_file(cupsd_config_var_run_t)

type cupsd_t;
type cupsd_exec_t;
init_daemon_domain(cupsd_t, cupsd_exec_t)

type cupsd_etc_t;
files_config_file(cupsd_etc_t)

type cupsd_rw_etc_t;
files_config_file(cupsd_rw_etc_t)

type cupsd_log_t;
logging_log_file(cupsd_log_t)

type cupsd_lpd_t;
type cupsd_lpd_exec_t;
domain_type(cupsd_lpd_t)
domain_entry_file(cupsd_lpd_t, cupsd_lpd_exec_t)
role system_r types cupsd_lpd_t;

type cupsd_lpd_tmp_t;
files_tmp_file(cupsd_lpd_tmp_t)

type cupsd_lpd_var_run_t;
files_pid_file(cupsd_lpd_var_run_t)

type cupsd_tmp_t;
files_tmp_file(cupsd_tmp_t)

type cupsd_var_run_t;
files_pid_file(cupsd_var_run_t)
mls_trusted_object(cupsd_var_run_t)

type hplip_t;
type hplip_exec_t;
init_daemon_domain(hplip_t, hplip_exec_t)

type hplip_etc_t;
files_config_file(hplip_etc_t)

type hplip_var_run_t;
files_pid_file(hplip_var_run_t)

type ptal_t;
type ptal_exec_t;
init_daemon_domain(ptal_t, ptal_exec_t)

type ptal_etc_t;
files_config_file(ptal_etc_t)

type ptal_var_run_t;
files_pid_file(ptal_var_run_t)

ifdef(`enable_mcs',`
	init_ranged_daemon_domain(cupsd_t,cupsd_exec_t,s0 - mcs_systemhigh)
')

ifdef(`enable_mls',`
	init_ranged_daemon_domain(cupsd_t,cupsd_exec_t,mls_systemhigh)
')

########################################
#
# Cups local policy
#

# /usr/lib/cups/backend/serial needs sys_admin(?!)
allow cupsd_t self:capability { sys_admin dac_override dac_read_search kill setgid setuid fsetid net_bind_service fowner chown dac_override sys_resource sys_tty_config };
dontaudit cupsd_t self:capability { sys_tty_config net_admin };
allow cupsd_t self:process { setsched signal_perms };
allow cupsd_t self:fifo_file rw_file_perms;
allow cupsd_t self:unix_stream_socket { create_stream_socket_perms connectto };
allow cupsd_t self:unix_dgram_socket create_socket_perms;
allow cupsd_t self:netlink_selinux_socket create_socket_perms;
allow cupsd_t self:tcp_socket create_stream_socket_perms;
allow cupsd_t self:udp_socket create_socket_perms;
allow cupsd_t self:appletalk_socket create_socket_perms;
# generic socket here until appletalk socket is available in kernels
allow cupsd_t self:socket create_socket_perms;

allow cupsd_t cupsd_etc_t:{ dir file } setattr;
read_files_pattern(cupsd_t, cupsd_etc_t, cupsd_etc_t)
read_lnk_files_pattern(cupsd_t, cupsd_etc_t, cupsd_etc_t)
files_search_etc(cupsd_t)

manage_dirs_pattern(cupsd_t, cupsd_etc_t, cupsd_rw_etc_t)
manage_files_pattern(cupsd_t, cupsd_etc_t, cupsd_rw_etc_t)
filetrans_pattern(cupsd_t, cupsd_etc_t, cupsd_rw_etc_t, file)
files_var_filetrans(cupsd_t, cupsd_rw_etc_t, { dir file })

# allow cups to execute its backend scripts
can_exec(cupsd_t, cupsd_exec_t)
allow cupsd_t cupsd_exec_t:dir search;
allow cupsd_t cupsd_exec_t:lnk_file read;

manage_files_pattern(cupsd_t, cupsd_log_t, cupsd_log_t)
allow cupsd_t cupsd_log_t:dir setattr;
logging_log_filetrans(cupsd_t, cupsd_log_t, { file dir })

manage_dirs_pattern(cupsd_t, cupsd_tmp_t, cupsd_tmp_t)
manage_files_pattern(cupsd_t, cupsd_tmp_t, cupsd_tmp_t)
manage_fifo_files_pattern(cupsd_t, cupsd_tmp_t, cupsd_tmp_t)
files_tmp_filetrans(cupsd_t, cupsd_tmp_t, { file dir fifo_file })

allow cupsd_t cupsd_var_run_t:dir setattr;
manage_files_pattern(cupsd_t, cupsd_var_run_t, cupsd_var_run_t)
manage_sock_files_pattern(cupsd_t, cupsd_var_run_t, cupsd_var_run_t)
files_pid_filetrans(cupsd_t, cupsd_var_run_t, file)

read_files_pattern(cupsd_t, hplip_etc_t, hplip_etc_t)

allow cupsd_t hplip_var_run_t:file read_file_perms;

stream_connect_pattern(cupsd_t, ptal_var_run_t, ptal_var_run_t, ptal_t)
allow cupsd_t ptal_var_run_t : sock_file setattr;

kernel_read_system_state(cupsd_t)
kernel_read_network_state(cupsd_t)
kernel_read_all_sysctls(cupsd_t)

corenet_all_recvfrom_unlabeled(cupsd_t)
corenet_all_recvfrom_netlabel(cupsd_t)
corenet_tcp_sendrecv_generic_if(cupsd_t)
corenet_udp_sendrecv_generic_if(cupsd_t)
corenet_raw_sendrecv_generic_if(cupsd_t)
corenet_tcp_sendrecv_generic_node(cupsd_t)
corenet_udp_sendrecv_generic_node(cupsd_t)
corenet_raw_sendrecv_generic_node(cupsd_t)
corenet_tcp_sendrecv_all_ports(cupsd_t)
corenet_udp_sendrecv_all_ports(cupsd_t)
corenet_tcp_bind_generic_node(cupsd_t)
corenet_udp_bind_generic_node(cupsd_t)
corenet_tcp_bind_ipp_port(cupsd_t)
corenet_udp_bind_ipp_port(cupsd_t)
corenet_tcp_bind_reserved_port(cupsd_t)
corenet_dontaudit_tcp_bind_all_reserved_ports(cupsd_t)
corenet_tcp_connect_all_ports(cupsd_t)
corenet_sendrecv_hplip_client_packets(cupsd_t)
corenet_sendrecv_ipp_client_packets(cupsd_t)
corenet_sendrecv_ipp_server_packets(cupsd_t)

dev_rw_printer(cupsd_t)
dev_read_urand(cupsd_t)
dev_read_sysfs(cupsd_t)
dev_read_usbfs(cupsd_t)
dev_getattr_printer_dev(cupsd_t)

domain_read_all_domains_state(cupsd_t)

fs_getattr_all_fs(cupsd_t)
fs_search_auto_mountpoints(cupsd_t)

mls_file_downgrade(cupsd_t)
mls_file_write_all_levels(cupsd_t)
mls_file_read_all_levels(cupsd_t)
mls_socket_write_all_levels(cupsd_t)

term_use_unallocated_ttys(cupsd_t)
term_search_ptys(cupsd_t)

auth_domtrans_chk_passwd(cupsd_t)
auth_dontaudit_read_pam_pid(cupsd_t)

# Filter scripts may be shell scripts, and may invoke progs like /bin/mktemp
corecmd_exec_shell(cupsd_t)
corecmd_exec_bin(cupsd_t)

domain_use_interactive_fds(cupsd_t)

files_read_etc_files(cupsd_t)
files_read_etc_runtime_files(cupsd_t)
# read python modules
files_read_usr_files(cupsd_t)
# for /var/lib/defoma
files_search_var_lib(cupsd_t)
files_list_world_readable(cupsd_t)
files_read_world_readable_files(cupsd_t)
files_read_world_readable_symlinks(cupsd_t)
# Satisfy readahead
files_read_var_files(cupsd_t)
files_read_var_symlinks(cupsd_t)
# for /etc/printcap
files_dontaudit_write_etc_files(cupsd_t)
# smbspool seems to be iterating through all existing tmp files.
# redhat bug #214953
# cjp: this might be a broken behavior
files_dontaudit_getattr_all_tmp_files(cupsd_t)

selinux_compute_access_vector(cupsd_t)

init_exec_script_files(cupsd_t)

auth_use_nsswitch(cupsd_t)

# Read /usr/lib/gconv/gconv-modules.* and /usr/lib/python2.2/.*
libs_read_lib_files(cupsd_t)

logging_send_audit_msgs(cupsd_t)
logging_send_syslog_msg(cupsd_t)

miscfiles_read_localization(cupsd_t)
# invoking ghostscript needs to read fonts
miscfiles_read_fonts(cupsd_t)

seutil_read_config(cupsd_t)

sysnet_read_config(cupsd_t)

userdom_dontaudit_use_unpriv_user_fds(cupsd_t)
userdom_dontaudit_search_user_home_content(cupsd_t)

# Write to /var/spool/cups.
lpd_manage_spool(cupsd_t)

ifdef(`enable_mls',`
	lpd_relabel_spool(cupsd_t)
')

optional_policy(`
	apm_domtrans_client(cupsd_t)
')

optional_policy(`
	cron_system_entry(cupsd_t, cupsd_exec_t)
')

optional_policy(`
	dbus_system_bus_client(cupsd_t)

	userdom_dbus_send_all_users(cupsd_t)

	optional_policy(`
		hal_dbus_chat(cupsd_t)
	')
')

optional_policy(`
	hostname_exec(cupsd_t)
')

optional_policy(`
	inetd_core_service_domain(cupsd_t, cupsd_exec_t)
')

optional_policy(`
	logrotate_domtrans(cupsd_t)
')

optional_policy(`
	# cups execs smbtool which reads samba_etc_t files
	samba_read_config(cupsd_t)
	samba_rw_var_files(cupsd_t)
')

optional_policy(`
	seutil_sigchld_newrole(cupsd_t)
')

optional_policy(`
	udev_read_db(cupsd_t)
')

########################################
#
# Cups configuration daemon local policy
#

allow cupsd_config_t self:capability { chown sys_tty_config };
dontaudit cupsd_config_t self:capability sys_tty_config;
allow cupsd_config_t self:process signal_perms;
allow cupsd_config_t self:fifo_file rw_fifo_file_perms;
allow cupsd_config_t self:unix_stream_socket create_socket_perms;
allow cupsd_config_t self:unix_dgram_socket create_socket_perms;
allow cupsd_config_t self:tcp_socket create_stream_socket_perms;

allow cupsd_config_t cupsd_t:process signal;
ps_process_pattern(cupsd_config_t, cupsd_t)

manage_files_pattern(cupsd_config_t, cupsd_etc_t, cupsd_etc_t)
manage_lnk_files_pattern(cupsd_config_t, cupsd_etc_t, cupsd_etc_t)
filetrans_pattern(cupsd_config_t, cupsd_etc_t, cupsd_rw_etc_t, file)

manage_files_pattern(cupsd_config_t, cupsd_rw_etc_t, cupsd_rw_etc_t)
manage_lnk_files_pattern(cupsd_config_t, cupsd_rw_etc_t, cupsd_rw_etc_t)
files_var_filetrans(cupsd_config_t, cupsd_rw_etc_t, file)

can_exec(cupsd_config_t, cupsd_config_exec_t) 

allow cupsd_config_t cupsd_log_t:file rw_file_perms;

allow cupsd_config_t cupsd_tmp_t:file manage_file_perms;
files_tmp_filetrans(cupsd_config_t, cupsd_tmp_t, { file dir })

allow cupsd_config_t cupsd_var_run_t:file read_file_perms;

manage_files_pattern(cupsd_config_t, cupsd_config_var_run_t, cupsd_config_var_run_t)
files_pid_filetrans(cupsd_config_t, cupsd_config_var_run_t, file)

kernel_read_system_state(cupsd_config_t)
kernel_read_kernel_sysctls(cupsd_config_t)

corenet_all_recvfrom_unlabeled(cupsd_config_t)
corenet_all_recvfrom_netlabel(cupsd_config_t)
corenet_tcp_sendrecv_generic_if(cupsd_config_t)
corenet_tcp_sendrecv_generic_node(cupsd_config_t)
corenet_tcp_sendrecv_all_ports(cupsd_config_t)
corenet_tcp_connect_all_ports(cupsd_config_t)
corenet_sendrecv_all_client_packets(cupsd_config_t)

dev_read_sysfs(cupsd_config_t)
dev_read_urand(cupsd_config_t)
dev_read_rand(cupsd_config_t)

fs_getattr_all_fs(cupsd_config_t)
fs_search_auto_mountpoints(cupsd_config_t)

corecmd_exec_bin(cupsd_config_t)
corecmd_exec_shell(cupsd_config_t)

domain_use_interactive_fds(cupsd_config_t)
# killall causes the following
domain_dontaudit_search_all_domains_state(cupsd_config_t)

files_read_usr_files(cupsd_config_t)
files_read_etc_files(cupsd_config_t)
files_read_etc_runtime_files(cupsd_config_t)
files_read_var_symlinks(cupsd_config_t)

# Alternatives asks for this
init_getattr_script_files(cupsd_config_t)

auth_use_nsswitch(cupsd_config_t)

logging_send_syslog_msg(cupsd_config_t)

miscfiles_read_localization(cupsd_config_t)

seutil_dontaudit_search_config(cupsd_config_t)

userdom_dontaudit_use_unpriv_user_fds(cupsd_config_t)
userdom_dontaudit_search_user_home_dirs(cupsd_config_t)

cups_stream_connect(cupsd_config_t)

lpd_read_config(cupsd_config_t)

ifdef(`distro_redhat',`
	init_getattr_script_files(cupsd_config_t)

	optional_policy(`
		rpm_read_db(cupsd_config_t)
	')
')

optional_policy(`
	cron_system_entry(cupsd_config_t, cupsd_config_exec_t)
')

optional_policy(`
	dbus_system_bus_client(cupsd_config_t)
	dbus_connect_system_bus(cupsd_config_t)

	optional_policy(`
		hal_dbus_chat(cupsd_config_t)
	')
')

optional_policy(`
	hal_domtrans(cupsd_config_t)
	hal_read_tmp_files(cupsd_config_t)
')

optional_policy(`
	hostname_exec(cupsd_config_t)
')

optional_policy(`
	logrotate_use_fds(cupsd_config_t)
')

optional_policy(`
	rpm_read_db(cupsd_config_t)
')

optional_policy(`
	seutil_sigchld_newrole(cupsd_config_t)
')

optional_policy(`
	udev_read_db(cupsd_config_t)
')

########################################
#
# Cups lpd support
#

allow cupsd_lpd_t self:process signal_perms;
allow cupsd_lpd_t self:fifo_file rw_fifo_file_perms;
allow cupsd_lpd_t self:tcp_socket connected_stream_socket_perms;
allow cupsd_lpd_t self:udp_socket create_socket_perms;

# for identd
# cjp: this should probably only be inetd_child rules?
allow cupsd_lpd_t self:netlink_tcpdiag_socket r_netlink_socket_perms;
allow cupsd_lpd_t self:capability { setuid setgid };
files_search_home(cupsd_lpd_t)
optional_policy(`
	kerberos_use(cupsd_lpd_t)
')
#end for identd

allow cupsd_lpd_t cupsd_etc_t:dir list_dir_perms;
read_files_pattern(cupsd_lpd_t, cupsd_etc_t, cupsd_etc_t)
read_lnk_files_pattern(cupsd_lpd_t, cupsd_etc_t, cupsd_etc_t)

allow cupsd_lpd_t cupsd_rw_etc_t:dir list_dir_perms;
read_files_pattern(cupsd_lpd_t, cupsd_rw_etc_t, cupsd_rw_etc_t)
read_lnk_files_pattern(cupsd_lpd_t, cupsd_rw_etc_t, cupsd_rw_etc_t)

manage_dirs_pattern(cupsd_lpd_t, cupsd_lpd_tmp_t, cupsd_lpd_tmp_t)
manage_files_pattern(cupsd_lpd_t, cupsd_lpd_tmp_t, cupsd_lpd_tmp_t)
files_tmp_filetrans(cupsd_lpd_t, cupsd_lpd_tmp_t, { file dir })

manage_files_pattern(cupsd_lpd_t, cupsd_lpd_var_run_t, cupsd_lpd_var_run_t)
files_pid_filetrans(cupsd_lpd_t, cupsd_lpd_var_run_t, file)

kernel_read_kernel_sysctls(cupsd_lpd_t)
kernel_read_system_state(cupsd_lpd_t)
kernel_read_network_state(cupsd_lpd_t)

corenet_all_recvfrom_unlabeled(cupsd_lpd_t)
corenet_all_recvfrom_netlabel(cupsd_lpd_t)
corenet_tcp_sendrecv_generic_if(cupsd_lpd_t)
corenet_udp_sendrecv_generic_if(cupsd_lpd_t)
corenet_tcp_sendrecv_generic_node(cupsd_lpd_t)
corenet_udp_sendrecv_generic_node(cupsd_lpd_t)
corenet_tcp_sendrecv_all_ports(cupsd_lpd_t)
corenet_udp_sendrecv_all_ports(cupsd_lpd_t)
corenet_tcp_bind_generic_node(cupsd_lpd_t)
corenet_udp_bind_generic_node(cupsd_lpd_t)
corenet_tcp_connect_ipp_port(cupsd_lpd_t)

dev_read_urand(cupsd_lpd_t)
dev_read_rand(cupsd_lpd_t)

fs_getattr_xattr_fs(cupsd_lpd_t)

files_read_etc_files(cupsd_lpd_t)

auth_use_nsswitch(cupsd_lpd_t)

logging_send_syslog_msg(cupsd_lpd_t)

miscfiles_read_localization(cupsd_lpd_t)

cups_stream_connect(cupsd_lpd_t)

optional_policy(`
	inetd_service_domain(cupsd_lpd_t, cupsd_lpd_exec_t)
')

########################################
#
# HPLIP local policy
#

# Needed for USB Scanneer and xsane
allow hplip_t self:capability { dac_override dac_read_search net_raw };
dontaudit hplip_t self:capability sys_tty_config;
allow hplip_t self:fifo_file rw_fifo_file_perms;
allow hplip_t self:process signal_perms;
allow hplip_t self:unix_dgram_socket create_socket_perms;
allow hplip_t self:unix_stream_socket create_socket_perms;
allow hplip_t self:netlink_route_socket r_netlink_socket_perms;
allow hplip_t self:tcp_socket create_stream_socket_perms;
allow hplip_t self:udp_socket create_socket_perms;
allow hplip_t self:rawip_socket create_socket_perms;

allow hplip_t cupsd_etc_t:dir search;

cups_stream_connect(hplip_t)

allow hplip_t hplip_etc_t:dir list_dir_perms;
read_files_pattern(hplip_t, hplip_etc_t, hplip_etc_t)
read_lnk_files_pattern(hplip_t, hplip_etc_t, hplip_etc_t)
files_search_etc(hplip_t)

manage_files_pattern(hplip_t, hplip_var_run_t, hplip_var_run_t)
files_pid_filetrans(hplip_t, hplip_var_run_t, file)

kernel_read_system_state(hplip_t)
kernel_read_kernel_sysctls(hplip_t)

corenet_all_recvfrom_unlabeled(hplip_t)
corenet_all_recvfrom_netlabel(hplip_t)
corenet_tcp_sendrecv_generic_if(hplip_t)
corenet_udp_sendrecv_generic_if(hplip_t)
corenet_raw_sendrecv_generic_if(hplip_t)
corenet_tcp_sendrecv_generic_node(hplip_t)
corenet_udp_sendrecv_generic_node(hplip_t)
corenet_raw_sendrecv_generic_node(hplip_t)
corenet_tcp_sendrecv_all_ports(hplip_t)
corenet_udp_sendrecv_all_ports(hplip_t)
corenet_tcp_bind_generic_node(hplip_t)
corenet_udp_bind_generic_node(hplip_t)
corenet_tcp_bind_hplip_port(hplip_t)
corenet_tcp_connect_hplip_port(hplip_t)
corenet_tcp_connect_ipp_port(hplip_t)
corenet_sendrecv_hplip_client_packets(hplip_t)
corenet_receive_hplip_server_packets(hplip_t)

dev_read_sysfs(hplip_t)
dev_rw_printer(hplip_t)
dev_read_urand(hplip_t)
dev_read_rand(hplip_t)
dev_rw_generic_usb_dev(hplip_t)
dev_read_usbfs(hplip_t)

fs_getattr_all_fs(hplip_t)
fs_search_auto_mountpoints(hplip_t)

# for python
corecmd_exec_bin(hplip_t)

domain_use_interactive_fds(hplip_t)

files_read_etc_files(hplip_t)
files_read_etc_runtime_files(hplip_t)
files_read_usr_files(hplip_t)

logging_send_syslog_msg(hplip_t)

miscfiles_read_localization(hplip_t)

sysnet_read_config(hplip_t)

userdom_dontaudit_use_unpriv_user_fds(hplip_t)
userdom_dontaudit_search_user_home_dirs(hplip_t)
userdom_dontaudit_search_user_home_content(hplip_t)

lpd_read_config(cupsd_t)

optional_policy(`
	dbus_system_bus_client(hplip_t)
')

optional_policy(`
	seutil_sigchld_newrole(hplip_t)
')

optional_policy(`
	snmp_read_snmp_var_lib_files(hplip_t)
')

optional_policy(`
	udev_read_db(hplip_t)
')

########################################
#
# PTAL local policy
#

allow ptal_t self:capability { chown sys_rawio };
dontaudit ptal_t self:capability sys_tty_config;
allow ptal_t self:fifo_file rw_fifo_file_perms;
allow ptal_t self:unix_dgram_socket create_socket_perms;
allow ptal_t self:unix_stream_socket create_stream_socket_perms;
allow ptal_t self:tcp_socket create_stream_socket_perms;

allow ptal_t ptal_etc_t:dir list_dir_perms;
read_files_pattern(ptal_t, ptal_etc_t, ptal_etc_t)
read_lnk_files_pattern(ptal_t, ptal_etc_t, ptal_etc_t)
files_search_etc(ptal_t)

manage_dirs_pattern(ptal_t, ptal_var_run_t, ptal_var_run_t)
manage_files_pattern(ptal_t, ptal_var_run_t, ptal_var_run_t)
manage_lnk_files_pattern(ptal_t, ptal_var_run_t, ptal_var_run_t)
manage_fifo_files_pattern(ptal_t, ptal_var_run_t, ptal_var_run_t)
manage_sock_files_pattern(ptal_t, ptal_var_run_t, ptal_var_run_t)
files_pid_filetrans(ptal_t, ptal_var_run_t, { dir file lnk_file sock_file fifo_file })

kernel_read_kernel_sysctls(ptal_t)
kernel_list_proc(ptal_t)
kernel_read_proc_symlinks(ptal_t)

corenet_all_recvfrom_unlabeled(ptal_t)
corenet_all_recvfrom_netlabel(ptal_t)
corenet_tcp_sendrecv_generic_if(ptal_t)
corenet_tcp_sendrecv_generic_node(ptal_t)
corenet_tcp_sendrecv_all_ports(ptal_t)
corenet_tcp_bind_generic_node(ptal_t)
corenet_tcp_bind_ptal_port(ptal_t)

dev_read_sysfs(ptal_t)
dev_read_usbfs(ptal_t)
dev_rw_printer(ptal_t)

fs_getattr_all_fs(ptal_t)
fs_search_auto_mountpoints(ptal_t)

domain_use_interactive_fds(ptal_t)

files_read_etc_files(ptal_t)
files_read_etc_runtime_files(ptal_t)

logging_send_syslog_msg(ptal_t)

miscfiles_read_localization(ptal_t)

sysnet_read_config(ptal_t)

userdom_dontaudit_use_unpriv_user_fds(ptal_t)
userdom_dontaudit_search_user_home_content(ptal_t)

optional_policy(`
	seutil_sigchld_newrole(ptal_t)
')

optional_policy(`
	udev_read_db(ptal_t)
')