policy_module(tftp, 1.12.0)

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

#

# Declarations

#

## <desc>

## 

## Allow tftp to modify public files

## used for public file transfer services.

## 

## </desc>

gen_tunable(tftp_anon_write, false)

## <desc>

## 

## Allow tftp to read and write files in the user home directories

## 

## </desc>

gen_tunable(tftp_home_dir, false)

type tftpd_t;

type tftpd_exec_t;

init_daemon_domain(tftpd_t, tftpd_exec_t)

type tftpd_var_run_t;

files_pid_file(tftpd_var_run_t)

type tftpdir_t;

files_type(tftpdir_t)

type tftpdir_rw_t;

files_type(tftpdir_rw_t)

type tftpd_etc_t;

files_config_file(tftpd_etc_t)

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

#

# Local policy

#

allow tftpd_t self:capability { setgid setuid sys_chroot };

dontaudit tftpd_t self:capability sys_tty_config;

allow tftpd_t self:tcp_socket create_stream_socket_perms;

allow tftpd_t self:udp_socket create_socket_perms;

allow tftpd_t self:unix_dgram_socket create_socket_perms;

allow tftpd_t self:unix_stream_socket create_stream_socket_perms;

allow tftpd_t tftpdir_t:dir list_dir_perms;

allow tftpd_t tftpdir_t:file read_file_perms;

allow tftpd_t tftpdir_t:lnk_file read_lnk_file_perms;

read_files_pattern(tftpd_t, tftpd_etc_t, tftpd_etc_t)

manage_dirs_pattern(tftpd_t, tftpdir_rw_t, tftpdir_rw_t)

manage_files_pattern(tftpd_t, tftpdir_rw_t, tftpdir_rw_t)

manage_lnk_files_pattern(tftpd_t, tftpdir_rw_t, tftpdir_rw_t)

manage_files_pattern(tftpd_t, tftpd_var_run_t, tftpd_var_run_t)

files_pid_filetrans(tftpd_t, tftpd_var_run_t, file)

kernel_read_system_state(tftpd_t)

kernel_read_kernel_sysctls(tftpd_t)

corenet_all_recvfrom_netlabel(tftpd_t)

corenet_tcp_sendrecv_generic_if(tftpd_t)

corenet_udp_sendrecv_generic_if(tftpd_t)

corenet_tcp_sendrecv_generic_node(tftpd_t)

corenet_udp_sendrecv_generic_node(tftpd_t)

corenet_tcp_sendrecv_all_ports(tftpd_t)

corenet_udp_sendrecv_all_ports(tftpd_t)

corenet_tcp_bind_generic_node(tftpd_t)

corenet_udp_bind_generic_node(tftpd_t)

corenet_udp_bind_tftp_port(tftpd_t)

corenet_sendrecv_tftp_server_packets(tftpd_t)

dev_read_sysfs(tftpd_t)

fs_getattr_all_fs(tftpd_t)

fs_search_auto_mountpoints(tftpd_t)

domain_use_interactive_fds(tftpd_t)

files_read_etc_runtime_files(tftpd_t)

files_read_var_files(tftpd_t)

files_read_var_symlinks(tftpd_t)

files_search_var(tftpd_t)

auth_use_nsswitch(tftpd_t)

logging_send_syslog_msg(tftpd_t)

miscfiles_read_public_files(tftpd_t)

userdom_dontaudit_use_unpriv_user_fds(tftpd_t)

userdom_dontaudit_use_user_terminals(tftpd_t)

userdom_dontaudit_search_user_home_dirs(tftpd_t)

tunable_policy(`tftp_anon_write',`

	miscfiles_manage_public_files(tftpd_t)

')

tunable_policy(`tftp_home_dir',`

    allow tftpd_t self:capability { dac_override dac_read_search };

	# allow access to /home

	files_list_home(tftpd_t)

    userdom_read_user_home_content_files(tftpd_t)

    userdom_manage_user_home_content(tftpd_t)

    auth_read_all_dirs_except_shadow(tftpd_t)

    auth_read_all_files_except_shadow(tftpd_t)

    auth_read_all_symlinks_except_shadow(tftpd_t)

',`

	# Needed for permissive mode, to make sure everything gets labeled correctly

	userdom_user_home_dir_filetrans_pattern(tftpd_t, { dir file lnk_file })

')

tunable_policy(`tftp_home_dir && use_nfs_home_dirs',`

    fs_manage_nfs_files(tftpd_t)

    fs_read_nfs_symlinks(tftpd_t)

')

tunable_policy(`tftp_home_dir && use_samba_home_dirs',`

    fs_manage_cifs_files(tftpd_t)

    fs_read_cifs_symlinks(tftpd_t)

')

optional_policy(`

	cobbler_read_lib_files(tftpd_t)

')

optional_policy(`

	inetd_udp_service_domain(tftpd_t, tftpd_exec_t)

')

optional_policy(`

	seutil_sigchld_newrole(tftpd_t)

')

optional_policy(`

	udev_read_db(tftpd_t)

')