policy_module(tor, 1.8.0)

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

## <desc>
## <p>
## Allow tor daemon to bind
## tcp sockets to all unreserved ports.
## </p>
## </desc>
gen_tunable(tor_bind_all_unreserved_ports, false)

## <desc>
## <p>
## Allow tor to act as a relay
## </p>
## </desc>
gen_tunable(tor_can_network_relay, false)

type tor_t;
type tor_exec_t;
init_daemon_domain(tor_t, tor_exec_t)

# etc/tor
type tor_etc_t;
files_config_file(tor_etc_t)

type tor_initrc_exec_t;
init_script_file(tor_initrc_exec_t)

# var/lib/tor
type tor_var_lib_t;
files_type(tor_var_lib_t)

# log files
type tor_var_log_t;
logging_log_file(tor_var_log_t)

# pid files
type tor_var_run_t;
files_pid_file(tor_var_run_t)

type tor_unit_file_t;
systemd_unit_file(tor_unit_file_t)

########################################
#
# tor local policy
#

allow tor_t self:capability { setgid setuid sys_tty_config };
allow tor_t self:process signal;
allow tor_t self:fifo_file rw_fifo_file_perms;
allow tor_t self:unix_stream_socket create_stream_socket_perms;
allow tor_t self:netlink_route_socket r_netlink_socket_perms;
allow tor_t self:tcp_socket create_stream_socket_perms;

# configuration files
allow tor_t tor_etc_t:dir list_dir_perms;
read_files_pattern(tor_t, tor_etc_t, tor_etc_t)
read_lnk_files_pattern(tor_t, tor_etc_t, tor_etc_t)

# var/lib/tor files
manage_dirs_pattern(tor_t, tor_var_lib_t, tor_var_lib_t)
manage_files_pattern(tor_t, tor_var_lib_t, tor_var_lib_t)
manage_sock_files_pattern(tor_t, tor_var_lib_t, tor_var_lib_t)
files_usr_filetrans(tor_t, tor_var_lib_t, file)
files_var_filetrans(tor_t, tor_var_lib_t, { file dir sock_file })
files_var_lib_filetrans(tor_t, tor_var_lib_t, file)

# log files
allow tor_t tor_var_log_t:dir setattr;
manage_files_pattern(tor_t, tor_var_log_t, tor_var_log_t)
manage_sock_files_pattern(tor_t, tor_var_log_t, tor_var_log_t)
logging_log_filetrans(tor_t, tor_var_log_t, { sock_file file dir })

# pid file
manage_dirs_pattern(tor_t, tor_var_run_t, tor_var_run_t)
manage_files_pattern(tor_t, tor_var_run_t, tor_var_run_t)
manage_sock_files_pattern(tor_t, tor_var_run_t, tor_var_run_t)
files_pid_filetrans(tor_t, tor_var_run_t, { dir file sock_file })

kernel_read_system_state(tor_t)
kernel_read_net_sysctls(tor_t)
kernel_read_kernel_sysctls(tor_t)

# networking basics
corenet_all_recvfrom_netlabel(tor_t)
corenet_tcp_sendrecv_generic_if(tor_t)
corenet_udp_sendrecv_generic_if(tor_t)
corenet_tcp_sendrecv_generic_node(tor_t)
corenet_udp_sendrecv_generic_node(tor_t)
corenet_tcp_sendrecv_all_ports(tor_t)
corenet_udp_sendrecv_dns_port(tor_t)
corenet_tcp_sendrecv_all_reserved_ports(tor_t)
corenet_tcp_bind_generic_node(tor_t)
corenet_udp_bind_generic_node(tor_t)
corenet_tcp_bind_tor_port(tor_t)
corenet_tcp_bind_tor_socks_port(tor_t)
corenet_udp_bind_dns_port(tor_t)
corenet_sendrecv_tor_server_packets(tor_t)
corenet_sendrecv_dns_server_packets(tor_t)
# TOR will need to connect to various ports
corenet_tcp_connect_all_ports(tor_t)
corenet_sendrecv_all_client_packets(tor_t)
# ... especially including port 80 and other privileged ports
corenet_tcp_connect_all_reserved_ports(tor_t)
corenet_udp_bind_dns_port(tor_t)

# tor uses crypto and needs random
dev_read_urand(tor_t)
dev_read_sysfs(tor_t)

domain_use_interactive_fds(tor_t)

files_read_etc_runtime_files(tor_t)
files_read_usr_files(tor_t)

auth_use_nsswitch(tor_t)

logging_send_syslog_msg(tor_t)

tunable_policy(`tor_bind_all_unreserved_ports', `
	corenet_tcp_bind_all_unreserved_ports(tor_t)
')

tunable_policy(`tor_can_network_relay',`
    # allow httpd to work as a relay
	corenet_tcp_connect_all_ephemeral_ports(tor_t)
	corenet_tcp_bind_http_port(tor_t)
')

optional_policy(`
	seutil_sigchld_newrole(tor_t)
')