policy_module(ppp,1.0)

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

# 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; #, usercanread;
files_type(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_script_exec_t;
files_type(pppd_script_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
#

dontaudit pppd_t self:capability sys_tty_config;
allow pppd_t self:capability { net_admin setuid setgid fsetid fowner net_raw dac_override };
allow pppd_t self:fifo_file rw_file_perms;
allow pppd_t self:file { read getattr };
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 r_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;

domain_auto_trans(pppd_t, pptp_exec_t, pptp_t)

allow pppd_t pppd_devpts_t:chr_file { rw_file_perms setattr };

allow pppd_t pppd_etc_t:dir rw_dir_perms;
allow pppd_t pppd_etc_t:file r_file_perms;
allow pppd_t pppd_etc_t:lnk_file { getattr read };
files_create_etc_config(pppd_t,pppd_etc_t)

allow pppd_t pppd_etc_rw_t:file create_file_perms;

allow pppd_t pppd_lock_t:file create_file_perms;
files_create_lock(pppd_t,pppd_lock_t)

allow pppd_t pppd_log_t:file create_file_perms;
logging_create_log(pppd_t,pppd_log_t)

allow pppd_t pppd_tmp_t:dir create_dir_perms;
allow pppd_t pppd_tmp_t:file create_file_perms;
files_create_tmp_files(pppd_t, pppd_tmp_t, { file dir })

allow pppd_t pppd_var_run_t:dir rw_dir_perms;
allow pppd_t pppd_var_run_t:file create_file_perms;
files_create_pid(pppd_t,pppd_var_run_t)

allow pppd_t pptp_t:process signal;

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

# Automatically label newly created files under /etc/ppp with this type
type_transition pppd_t pppd_etc_t:file pppd_etc_rw_t;

kernel_list_proc(pppd_t)
kernel_read_kernel_sysctl(pppd_t)
kernel_read_proc_symlinks(pppd_t)
kernel_read_net_sysctl(pppd_t)
kernel_read_network_state(pppd_t)
kernel_load_module(pppd_t)

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

corenet_tcp_sendrecv_all_if(pppd_t)
corenet_raw_sendrecv_all_if(pppd_t)
corenet_udp_sendrecv_all_if(pppd_t)
corenet_tcp_sendrecv_all_nodes(pppd_t)
corenet_raw_sendrecv_all_nodes(pppd_t)
corenet_udp_sendrecv_all_nodes(pppd_t)
corenet_tcp_sendrecv_all_ports(pppd_t)
corenet_udp_sendrecv_all_ports(pppd_t)
corenet_tcp_bind_all_nodes(pppd_t)
corenet_udp_bind_all_nodes(pppd_t)
# Access /dev/ppp.
corenet_use_ppp_device(pppd_t)

fs_getattr_all_fs(pppd_t)
fs_search_auto_mountpoints(pppd_t)

term_use_unallocated_tty(pppd_t)
term_setattr_unallocated_ttys(pppd_t)
term_ioctl_generic_pty(pppd_t)
# for pppoe
term_create_pty(pppd_t,pppd_devpts_t)
term_dontaudit_use_console(pppd_t)

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

domain_use_wide_inherit_fd(pppd_t)

files_exec_etc_files(pppd_t)
files_read_etc_runtime_files(pppd_t)
# for scripts
files_read_etc_files(pppd_t)

init_read_script_pid(pppd_t)
init_dontaudit_write_script_pid(pppd_t)
init_use_fd(pppd_t)
init_use_script_pty(pppd_t)

libs_use_ld_so(pppd_t)
libs_use_shared_libs(pppd_t)

logging_send_syslog_msg(pppd_t)

miscfiles_read_localization(pppd_t)

sysnet_read_config(pppd_t)
sysnet_exec_ifconfig(pppd_t)
sysnet_manage_config(pppd_t)

userdom_dontaudit_use_unpriv_user_fd(pppd_t)
userdom_dontaudit_search_sysadm_home_dir(pppd_t)
# for ~/.ppprc - if it actually exists then you need some policy to read it
#allow pppd_t { sysadm_home_dir_t home_root_t user_home_dir_type }:dir search;
userdom_search_sysadm_home_dir(pppd_t)
userdom_search_unpriv_user_home_dirs(pppd_t)

ifdef(`targeted_policy', `
	term_dontaudit_use_unallocated_tty(pppd_t)
	term_dontaudit_use_generic_pty(pppd_t)
	files_dontaudit_read_root_file(pppd_t)

	optional_policy(`postfix.te',`
		gen_require(`
			bool postfix_master_disable_transgre;
		')

		if(!postfix_master_disable_trans) {
			postfix_domtrans_master(pppd_t)
		}
	')
',`
	optional_policy(`postfix.te',`
		postfix_domtrans_master(pppd_t)
	')
')

optional_policy(`modutils.te',`
	tunable_policy(`pppd_can_insmod',`
		modutils_domtrans_insmod(pppd_t)
	')
')

optional_policy(`nis.te',`
	nis_use_ypbind(pppd_t)
')

optional_policy(`nscd.te',`
	nscd_use_socket(pppd_t)
')

optional_policy(`selinuxutil.te',`
	seutil_sigchld_newrole(pppd_t)
')

optional_policy(`udev.te', `
	udev_read_db(pppd_t)
')

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

dontaudit pptp_t self:capability sys_tty_config;
allow pptp_t self:capability net_raw;
allow pptp_t self:fifo_file { read write };
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 pppd_etc_t:dir { getattr read search };
allow pptp_t pppd_etc_t:file { read getattr };
allow pptp_t pppd_etc_t:lnk_file { getattr read };

allow pptp_t pppd_etc_rw_t:dir { getattr read search };
allow pptp_t pppd_etc_rw_t:file { read getattr };
allow pptp_t pppd_etc_rw_t:lnk_file { getattr read };
can_exec(pptp_t, pppd_etc_rw_t)

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

allow pptp_t pptp_log_t:file create_file_perms;
logging_create_log(pptp_t,pptp_log_t)

allow pptp_t pptp_var_run_t:file create_file_perms;
allow pptp_t pptp_var_run_t:dir rw_dir_perms;
allow pptp_t pptp_var_run_t:sock_file create_file_perms;
files_create_pid(pptp_t,pptp_var_run_t)

kernel_list_proc(pptp_t)
kernel_read_kernel_sysctl(pptp_t)
kernel_read_proc_symlinks(pptp_t)

dev_read_sysfs(pptp_t)

corenet_tcp_sendrecv_all_if(pptp_t)
corenet_raw_sendrecv_all_if(pptp_t)
corenet_tcp_sendrecv_all_nodes(pptp_t)
corenet_raw_sendrecv_all_nodes(pptp_t)
corenet_tcp_sendrecv_all_ports(pptp_t)
corenet_tcp_bind_all_nodes(pptp_t)
corenet_tcp_connect_generic_port(pptp_t)
corenet_tcp_connect_all_reserved_ports(pptp_t)

fs_getattr_all_fs(pptp_t)
fs_search_auto_mountpoints(pptp_t)

term_dontaudit_use_console(pptp_t)
term_ioctl_generic_pty(pptp_t)
term_search_ptys(pptp_t)
term_use_ptmx(pptp_t)

domain_use_wide_inherit_fd(pptp_t)

init_use_fd(pptp_t)
init_use_script_pty(pptp_t)

libs_use_ld_so(pptp_t)
libs_use_shared_libs(pptp_t)

logging_send_syslog_msg(pptp_t)

miscfiles_read_localization(pptp_t)

sysnet_read_config(pptp_t)

userdom_dontaudit_use_unpriv_user_fd(pptp_t)
userdom_dontaudit_search_sysadm_home_dir(pptp_t)

ifdef(`targeted_policy',`
        term_dontaudit_use_unallocated_tty(pptp_t)
        term_dontaudit_use_generic_pty(pptp_t)
        files_dontaudit_read_root_file(pptp_t)
')

optional_policy(`hostname.te',`
	hostname_exec(pptp_t)
')

optional_policy(`nscd.te',`
	nscd_use_socket(pptp_t)
')

optional_policy(`selinuxutil.te',`
        seutil_sigchld_newrole(pptp_t)
')

optional_policy(`udev.te',`
        udev_read_db(pptp_t)
')

ifdef(`TODO',`
ifdef(`postfix.te', `
	allow pppd_t postfix_etc_t:dir search;
	allow pppd_t postfix_etc_t:file r_file_perms;
	allow pppd_t postfix_master_exec_t:file { getattr read };

	ppp_use_fd(postfix_postqueue_t)
	ppp_signal_daemon(postfix_postqueue_t)
')
optional_policy(`rhgb.te',`
	rhgb_domain(pppd_t)
')
optional_policy(`rhgb.te',`
        rhgb_domain(pptp_t)
')
ifdef(`named.te', `
	dontaudit ndc_t pppd_t:fd use;
')

domain_auto_trans(pppd_t, pppd_script_exec_t, initrc_t)
')