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

policy_module(ppp, 1.12.0)

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

## <desc>
##	<p>
##	Allow pppd to load kernel modules for certain modems
##	</p>
## </desc>
gen_tunable(pppd_can_insmod, false)

## <desc>
##	<p>
##	Allow pppd to be run for a regular user
##	</p>
## </desc>
gen_tunable(pppd_for_user, false)

# pppd_t is the domain for the pppd program.
# pppd_exec_t is the type of the pppd executable.
type pppd_t;
type pppd_exec_t;
init_daemon_domain(pppd_t, pppd_exec_t)

type pppd_devpts_t;
term_pty(pppd_devpts_t)

# Define a separate type for /etc/ppp
type pppd_etc_t;
files_config_file(pppd_etc_t)

# Define a separate type for writable files under /etc/ppp
type pppd_etc_rw_t;
files_type(pppd_etc_rw_t)

type pppd_initrc_exec_t alias pppd_script_exec_t;
init_script_file(pppd_initrc_exec_t)

# pppd_secret_t is the type of the pap and chap password files
type pppd_secret_t;
files_type(pppd_secret_t)

type pppd_log_t;
logging_log_file(pppd_log_t)

type pppd_lock_t;
files_lock_file(pppd_lock_t)

type pppd_tmp_t;
files_tmp_file(pppd_tmp_t)

type pppd_var_run_t;
files_pid_file(pppd_var_run_t)

type pptp_t;
type pptp_exec_t;
init_daemon_domain(pptp_t, pptp_exec_t)

type pptp_log_t;
logging_log_file(pptp_log_t)

type pptp_var_run_t;
files_pid_file(pptp_var_run_t)

########################################
#
# PPPD Local policy
#

allow pppd_t self:capability { kill net_admin setuid setgid sys_admin fsetid fowner net_raw dac_override };
dontaudit pppd_t self:capability sys_tty_config;
allow pppd_t self:process { getsched signal };
allow pppd_t self:fifo_file rw_fifo_file_perms;
allow pppd_t self:socket create_socket_perms;
allow pppd_t self:unix_dgram_socket create_socket_perms;
allow pppd_t self:unix_stream_socket create_socket_perms;
allow pppd_t self:netlink_route_socket rw_netlink_socket_perms;
allow pppd_t self:tcp_socket create_stream_socket_perms;
allow pppd_t self:udp_socket { connect connected_socket_perms };
allow pppd_t self:packet_socket create_socket_perms;

domtrans_pattern(pppd_t, pptp_exec_t, pptp_t)

allow pppd_t pppd_devpts_t:chr_file { rw_chr_file_perms setattr_chr_file_perms };

allow pppd_t pppd_etc_t:dir rw_dir_perms;
allow pppd_t pppd_etc_t:file read_file_perms;
allow pppd_t pppd_etc_t:lnk_file read_lnk_file_perms;

manage_files_pattern(pppd_t, pppd_etc_rw_t, pppd_etc_rw_t)
# Automatically label newly created files under /etc/ppp with this type
filetrans_pattern(pppd_t, pppd_etc_t, pppd_etc_rw_t, file)

allow pppd_t pppd_lock_t:file manage_file_perms;
files_lock_filetrans(pppd_t, pppd_lock_t, file)

allow pppd_t pppd_log_t:file manage_file_perms;
logging_log_filetrans(pppd_t, pppd_log_t, file)

manage_dirs_pattern(pppd_t, pppd_tmp_t, pppd_tmp_t)
manage_files_pattern(pppd_t, pppd_tmp_t, pppd_tmp_t)
files_tmp_filetrans(pppd_t, pppd_tmp_t, { file dir })

manage_dirs_pattern(pppd_t, pppd_var_run_t, pppd_var_run_t)
manage_files_pattern(pppd_t, pppd_var_run_t, pppd_var_run_t)
files_pid_filetrans(pppd_t, pppd_var_run_t, { dir file })

allow pppd_t pptp_t:process signal;

# for SSP
# Access secret files
allow pppd_t pppd_secret_t:file read_file_perms;

ppp_initrc_domtrans(pppd_t)

kernel_read_kernel_sysctls(pppd_t)
kernel_read_system_state(pppd_t)
kernel_rw_net_sysctls(pppd_t)
kernel_read_network_state(pppd_t)
kernel_request_load_module(pppd_t)

dev_read_urand(pppd_t)
dev_search_sysfs(pppd_t)
dev_read_sysfs(pppd_t)
dev_rw_modem(pppd_t)

corenet_all_recvfrom_unlabeled(pppd_t)
corenet_all_recvfrom_netlabel(pppd_t)
corenet_tcp_sendrecv_generic_if(pppd_t)
corenet_raw_sendrecv_generic_if(pppd_t)
corenet_udp_sendrecv_generic_if(pppd_t)
corenet_tcp_sendrecv_generic_node(pppd_t)
corenet_raw_sendrecv_generic_node(pppd_t)
corenet_udp_sendrecv_generic_node(pppd_t)
corenet_tcp_sendrecv_all_ports(pppd_t)
corenet_udp_sendrecv_all_ports(pppd_t)
# Access /dev/ppp.
corenet_rw_ppp_dev(pppd_t)

fs_getattr_all_fs(pppd_t)
fs_search_auto_mountpoints(pppd_t)

term_use_unallocated_ttys(pppd_t)
term_setattr_unallocated_ttys(pppd_t)
term_ioctl_generic_ptys(pppd_t)
# for pppoe
term_create_pty(pppd_t, pppd_devpts_t)

# allow running ip-up and ip-down scripts and running chat.
corecmd_exec_bin(pppd_t)
corecmd_exec_shell(pppd_t)

domain_use_interactive_fds(pppd_t)

files_exec_etc_files(pppd_t)
files_manage_etc_runtime_files(pppd_t)
files_dontaudit_write_etc_files(pppd_t)

# for scripts
files_read_etc_files(pppd_t)

init_read_utmp(pppd_t)
init_dontaudit_write_utmp(pppd_t)
init_signal_script(pppd_t)

auth_use_nsswitch(pppd_t)

logging_send_syslog_msg(pppd_t)
logging_send_audit_msgs(pppd_t)

miscfiles_read_localization(pppd_t)

sysnet_exec_ifconfig(pppd_t)
sysnet_manage_config(pppd_t)
sysnet_etc_filetrans_config(pppd_t)

userdom_use_user_terminals(pppd_t)
userdom_dontaudit_use_unpriv_user_fds(pppd_t)
userdom_search_user_home_dirs(pppd_t)

ppp_exec(pppd_t)

optional_policy(`
	ddclient_domtrans(pppd_t)
')

optional_policy(`
	tunable_policy(`pppd_can_insmod && ! secure_mode_insmod',`
		modutils_domtrans_insmod_uncond(pppd_t)
	')
')

optional_policy(`
	mta_send_mail(pppd_t)
	mta_system_content(pppd_etc_t)
	mta_system_content(pppd_etc_rw_t)
')

optional_policy(`
	networkmanager_signal(pppd_t)
')

optional_policy(`
	postfix_domtrans_master(pppd_t)
')

optional_policy(`
	seutil_sigchld_newrole(pppd_t)
')

optional_policy(`
	udev_read_db(pppd_t)
')

########################################
#
# PPTP Local policy
#

allow pptp_t self:capability { dac_override dac_read_search net_raw net_admin };
dontaudit pptp_t self:capability sys_tty_config;
allow pptp_t self:process signal;
allow pptp_t self:fifo_file rw_fifo_file_perms;
allow pptp_t self:unix_dgram_socket create_socket_perms;
allow pptp_t self:unix_stream_socket { connectto create_stream_socket_perms };
allow pptp_t self:rawip_socket create_socket_perms;
allow pptp_t self:tcp_socket create_socket_perms;
allow pptp_t self:udp_socket create_socket_perms;
allow pptp_t self:netlink_route_socket rw_netlink_socket_perms;

allow pptp_t pppd_etc_t:dir list_dir_perms;
allow pptp_t pppd_etc_t:file read_file_perms;
allow pptp_t pppd_etc_t:lnk_file read_lnk_file_perms;

allow pptp_t pppd_etc_rw_t:dir list_dir_perms;
allow pptp_t pppd_etc_rw_t:file read_file_perms;
allow pptp_t pppd_etc_rw_t:lnk_file read_lnk_file_perms;
can_exec(pptp_t, pppd_etc_rw_t)

# Allow pptp to append to pppd log files
allow pptp_t pppd_log_t:file append_file_perms;

allow pptp_t pptp_log_t:file manage_file_perms;
logging_log_filetrans(pptp_t, pptp_log_t, file)

manage_dirs_pattern(pptp_t, pptp_var_run_t, pptp_var_run_t)
manage_files_pattern(pptp_t, pptp_var_run_t, pptp_var_run_t)
manage_sock_files_pattern(pptp_t, pptp_var_run_t, pptp_var_run_t)
files_pid_filetrans(pptp_t, pptp_var_run_t, { file dir })

kernel_list_proc(pptp_t)
kernel_read_kernel_sysctls(pptp_t)
kernel_read_proc_symlinks(pptp_t)
kernel_read_system_state(pptp_t)

dev_read_sysfs(pptp_t)

corecmd_exec_shell(pptp_t)
corecmd_read_bin_symlinks(pptp_t)

corenet_all_recvfrom_unlabeled(pptp_t)
corenet_all_recvfrom_netlabel(pptp_t)
corenet_tcp_sendrecv_generic_if(pptp_t)
corenet_raw_sendrecv_generic_if(pptp_t)
corenet_tcp_sendrecv_generic_node(pptp_t)
corenet_raw_sendrecv_generic_node(pptp_t)
corenet_tcp_sendrecv_all_ports(pptp_t)
corenet_tcp_bind_generic_node(pptp_t)
corenet_tcp_connect_generic_port(pptp_t)
corenet_tcp_connect_all_reserved_ports(pptp_t)
corenet_sendrecv_generic_client_packets(pptp_t)

files_read_etc_files(pptp_t)

fs_getattr_all_fs(pptp_t)
fs_search_auto_mountpoints(pptp_t)

term_ioctl_generic_ptys(pptp_t)
term_search_ptys(pptp_t)
term_use_ptmx(pptp_t)

domain_use_interactive_fds(pptp_t)

auth_use_nsswitch(pptp_t)

logging_send_syslog_msg(pptp_t)

miscfiles_read_localization(pptp_t)

sysnet_exec_ifconfig(pptp_t)

userdom_dontaudit_use_unpriv_user_fds(pptp_t)
userdom_dontaudit_search_user_home_dirs(pptp_t)
userdom_signal_unpriv_users(pptp_t)

optional_policy(`
	consoletype_exec(pppd_t)
')

optional_policy(`
	dbus_system_domain(pppd_t, pppd_exec_t)

	optional_policy(`
		networkmanager_dbus_chat(pppd_t)
	')
')

optional_policy(`
	hostname_exec(pptp_t)
')

optional_policy(`
	seutil_sigchld_newrole(pptp_t)
')

optional_policy(`
	udev_read_db(pptp_t)
')

optional_policy(`
	postfix_read_config(pppd_t)
')