policy_module(ppp, 1.13.0)

########################################

#

# Declarations

#

## <desc>

## 

## Allow pppd to load kernel modules for certain modems

## 

## </desc>

gen_tunable(pppd_can_insmod, false)

## <desc>

## 

## Allow pppd to be run for a regular user

## 

## </desc>

gen_tunable(pppd_for_user, false)

attribute_role pppd_roles;

# 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)

role pppd_roles types pppd_t;

role system_r types pppd_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)

type pppd_unit_file_t;

systemd_unit_file(pppd_unit_file_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)

#role pppd_roles types pptp_t;

role system_r types pptp_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 sys_nice };

dontaudit pppd_t self:capability sys_tty_config;

allow pppd_t self:process { getsched setsched 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)

manage_files_pattern(pppd_t, pppd_lock_t, pppd_lock_t)

files_search_locks(pppd_t)

manage_files_pattern(pppd_t, pppd_log_t, pppd_log_t)

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_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_use_usb_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)

term_use_generic_ptys(pppd_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

init_read_utmp(pppd_t)

init_dontaudit_write_utmp(pppd_t)

init_signal_script(pppd_t)

auth_use_nsswitch(pppd_t)

auth_domtrans_chk_passwd(pppd_t)

#auth_run_chk_passwd(pppd_t,pppd_roles)

auth_write_login_records(pppd_t)

logging_send_syslog_msg(pppd_t)

logging_send_audit_msgs(pppd_t)

sysnet_exec_ifconfig(pppd_t)

sysnet_manage_config(pppd_t)

sysnet_etc_filetrans_config(pppd_t)

userdom_use_inherited_user_terminals(pppd_t)

userdom_dontaudit_use_unpriv_user_fds(pppd_t)

userdom_search_user_home_dirs(pppd_t)

userdom_search_admin_dir(pppd_t)

ppp_exec(pppd_t)

optional_policy(`

	ddclient_run(pppd_t, pppd_roles)

')

optional_policy(`

	l2tpd_dgram_send(pppd_t)

	l2tpd_rw_socket(pppd_t)

	l2tpd_stream_connect(pppd_t)

')

optional_policy(`

	tunable_policy(`pppd_can_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_network_state(pptp_t)

kernel_read_proc_symlinks(pptp_t)

kernel_read_system_state(pptp_t)

kernel_signal(pptp_t)

dev_read_sysfs(pptp_t)

corecmd_exec_shell(pptp_t)

corecmd_read_bin_symlinks(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)

corenet_tcp_connect_pptp_port(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)

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)

')