policy_module(nx, 1.5.0)

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

#

# Declarations

#

type nx_server_t;

type nx_server_exec_t;

domain_type(nx_server_t)

domain_entry_file(nx_server_t, nx_server_exec_t)

domain_user_exemption_target(nx_server_t)

# we need an extra role because nxserver is called from sshd

# cjp: do we really need this?

role nx_server_r types nx_server_t;

allow system_r nx_server_r;

type nx_server_devpts_t;

term_user_pty(nx_server_t, nx_server_devpts_t)

type nx_server_tmp_t;

files_tmp_file(nx_server_tmp_t)

type nx_server_var_lib_t;

files_type(nx_server_var_lib_t)

type nx_server_var_run_t;

files_pid_file(nx_server_var_run_t)

type nx_server_home_ssh_t;

files_type(nx_server_home_ssh_t)

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

#

# NX server local policy

#

allow nx_server_t self:fifo_file rw_fifo_file_perms;

allow nx_server_t self:tcp_socket create_socket_perms;

allow nx_server_t self:udp_socket create_socket_perms;

allow nx_server_t nx_server_devpts_t:chr_file { rw_chr_file_perms setattr };

term_create_pty(nx_server_t, nx_server_devpts_t)

manage_dirs_pattern(nx_server_t, nx_server_tmp_t, nx_server_tmp_t)

manage_files_pattern(nx_server_t, nx_server_tmp_t, nx_server_tmp_t)

files_tmp_filetrans(nx_server_t, nx_server_tmp_t, { file dir })

manage_files_pattern(nx_server_t, nx_server_var_lib_t, nx_server_var_lib_t)

manage_dirs_pattern(nx_server_t, nx_server_var_lib_t, nx_server_var_lib_t)

files_var_lib_filetrans(nx_server_t, nx_server_var_lib_t, { file dir })

manage_files_pattern(nx_server_t, nx_server_var_run_t, nx_server_var_run_t)

files_pid_filetrans(nx_server_t, nx_server_var_run_t, file)

manage_dirs_pattern(nx_server_t, nx_server_home_ssh_t, nx_server_home_ssh_t)

manage_files_pattern(nx_server_t, nx_server_home_ssh_t, nx_server_home_ssh_t)

kernel_read_system_state(nx_server_t)

kernel_read_kernel_sysctls(nx_server_t)

# nxserver is a shell script --> call other programs

corecmd_exec_shell(nx_server_t)

corecmd_exec_bin(nx_server_t)

corenet_all_recvfrom_unlabeled(nx_server_t)

corenet_all_recvfrom_netlabel(nx_server_t)

corenet_tcp_sendrecv_generic_if(nx_server_t)

corenet_udp_sendrecv_generic_if(nx_server_t)

corenet_tcp_sendrecv_generic_node(nx_server_t)

corenet_udp_sendrecv_generic_node(nx_server_t)

corenet_tcp_sendrecv_all_ports(nx_server_t)

corenet_udp_sendrecv_all_ports(nx_server_t)

corenet_tcp_connect_all_ports(nx_server_t)

corenet_sendrecv_all_client_packets(nx_server_t)

dev_read_urand(nx_server_t)

files_read_etc_files(nx_server_t)

files_read_etc_runtime_files(nx_server_t)

# for reading the config files; maybe a separate type, 

# but users need to be able to also read the config

files_read_usr_files(nx_server_t)

miscfiles_read_localization(nx_server_t)

seutil_dontaudit_search_config(nx_server_t)

sysnet_read_config(nx_server_t)

ifdef(`TODO',`

# clients already have create permissions; the nxclient wants to also have unlink rights

allow userdomain xdm_tmp_t:sock_file unlink;

# for a lockfile created by the client process

allow nx_server_t user_tmpfile:file getattr;

')

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

#

# SSH component local policy

#

ssh_basic_client_template(nx_server, nx_server_t, nx_server_r)