policy_module(ftp,1.6.0)

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

#

# Declarations

#

## <desc>

## 

## Allow ftp servers to modify public files

## used for public file transfer services.

## 

## </desc>

gen_tunable(allow_ftpd_anon_write,false)

## <desc>

## 

## Allow ftp servers to login to local users and 

## read/write all files on the system, governed by DAC.

## 

## </desc>

gen_tunable(allow_ftpd_full_access,false)

## <desc>

## 

## Allow ftp servers to use cifs

## used for public file transfer services.

## 

## </desc>

gen_tunable(allow_ftpd_use_cifs,false)

## <desc>

## 

## Allow ftp servers to use nfs

## used for public file transfer services.

## 

## </desc>

gen_tunable(allow_ftpd_use_nfs,false)

## <desc>

## 

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

## 

## </desc>

gen_tunable(ftp_home_dir,false)

type ftpd_t;

type ftpd_exec_t;

init_daemon_domain(ftpd_t,ftpd_exec_t)

type ftpd_etc_t;

files_config_file(ftpd_etc_t)

type ftpd_lock_t;

files_lock_file(ftpd_lock_t)

type ftpd_tmp_t;

files_tmp_file(ftpd_tmp_t)

type ftpd_tmpfs_t;

files_tmpfs_file(ftpd_tmpfs_t)

type ftpd_var_run_t;

files_pid_file(ftpd_var_run_t)

type ftpdctl_t;

type ftpdctl_exec_t;

init_system_domain(ftpdctl_t,ftpdctl_exec_t)

type ftpdctl_tmp_t;

files_tmp_file(ftpdctl_tmp_t)

type xferlog_t;

logging_log_file(xferlog_t)

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

#

# ftpd local policy

#

allow ftpd_t self:capability { chown fowner fsetid setgid setuid sys_chroot sys_nice sys_resource };

dontaudit ftpd_t self:capability sys_tty_config;

allow ftpd_t self:process signal_perms;

allow ftpd_t self:process { getcap setcap setsched setrlimit };

allow ftpd_t self:fifo_file rw_fifo_file_perms;

allow ftpd_t self:unix_dgram_socket { sendto create_socket_perms };

allow ftpd_t self:unix_stream_socket create_stream_socket_perms;

allow ftpd_t self:tcp_socket create_stream_socket_perms;

allow ftpd_t self:udp_socket create_socket_perms;

allow ftpd_t ftpd_etc_t:file read_file_perms;

allow ftpd_t ftpd_lock_t:file manage_file_perms;

files_lock_filetrans(ftpd_t,ftpd_lock_t,file)

manage_dirs_pattern(ftpd_t,ftpd_tmp_t,ftpd_tmp_t)

manage_files_pattern(ftpd_t,ftpd_tmp_t,ftpd_tmp_t)

files_tmp_filetrans(ftpd_t, ftpd_tmp_t, { file dir })

manage_dirs_pattern(ftpd_t,ftpd_tmpfs_t,ftpd_tmpfs_t)

manage_files_pattern(ftpd_t,ftpd_tmpfs_t,ftpd_tmpfs_t)

manage_lnk_files_pattern(ftpd_t,ftpd_tmpfs_t,ftpd_tmpfs_t)

manage_fifo_files_pattern(ftpd_t,ftpd_tmpfs_t,ftpd_tmpfs_t)

manage_sock_files_pattern(ftpd_t,ftpd_tmpfs_t,ftpd_tmpfs_t)

fs_tmpfs_filetrans(ftpd_t,ftpd_tmpfs_t,{ dir file lnk_file sock_file fifo_file })

manage_files_pattern(ftpd_t,ftpd_var_run_t,ftpd_var_run_t)

manage_sock_files_pattern(ftpd_t,ftpd_var_run_t,ftpd_var_run_t)

files_pid_filetrans(ftpd_t,ftpd_var_run_t,file)

# proftpd requires the client side to bind a socket so that

# it can stat the socket to perform access control decisions,

# since getsockopt with SO_PEERCRED is not available on all

# proftpd-supported OSs

allow ftpd_t ftpdctl_tmp_t:sock_file { getattr unlink };

# Create and modify /var/log/xferlog.

allow ftpd_t xferlog_t:dir search_dir_perms;

allow ftpd_t xferlog_t:file manage_file_perms;

logging_log_filetrans(ftpd_t,xferlog_t,file)

kernel_read_kernel_sysctls(ftpd_t)

kernel_read_system_state(ftpd_t)

dev_read_sysfs(ftpd_t)

dev_read_urand(ftpd_t)

corecmd_exec_bin(ftpd_t)

corenet_all_recvfrom_unlabeled(ftpd_t)

corenet_all_recvfrom_netlabel(ftpd_t)

corenet_tcp_sendrecv_all_if(ftpd_t)

corenet_udp_sendrecv_all_if(ftpd_t)

corenet_tcp_sendrecv_all_nodes(ftpd_t)

corenet_udp_sendrecv_all_nodes(ftpd_t)

corenet_tcp_sendrecv_all_ports(ftpd_t)

corenet_udp_sendrecv_all_ports(ftpd_t)

corenet_tcp_bind_all_nodes(ftpd_t)

corenet_tcp_bind_ftp_port(ftpd_t)

corenet_tcp_bind_ftp_data_port(ftpd_t)

corenet_tcp_bind_generic_port(ftpd_t)

corenet_tcp_bind_all_unreserved_ports(ftpd_t)

corenet_dontaudit_tcp_bind_all_ports(ftpd_t)

corenet_tcp_connect_all_ports(ftpd_t)

corenet_sendrecv_ftp_server_packets(ftpd_t)

domain_use_interactive_fds(ftpd_t)

files_search_etc(ftpd_t)

files_read_etc_files(ftpd_t)

files_read_etc_runtime_files(ftpd_t)

files_search_var_lib(ftpd_t)

fs_search_auto_mountpoints(ftpd_t)

fs_getattr_all_fs(ftpd_t)

auth_use_nsswitch(ftpd_t)

auth_domtrans_chk_passwd(ftpd_t)

# Append to /var/log/wtmp.

auth_append_login_records(ftpd_t)

#kerberized ftp requires the following

auth_write_login_records(ftpd_t)

auth_rw_faillog(ftpd_t)

init_rw_utmp(ftpd_t)

libs_use_ld_so(ftpd_t)

libs_use_shared_libs(ftpd_t)

logging_send_syslog_msg(ftpd_t)

miscfiles_read_localization(ftpd_t)

miscfiles_read_public_files(ftpd_t)

seutil_dontaudit_search_config(ftpd_t)

sysnet_read_config(ftpd_t)

sysnet_use_ldap(ftpd_t)

userdom_dontaudit_search_sysadm_home_dirs(ftpd_t)

userdom_dontaudit_use_unpriv_user_fds(ftpd_t)

tunable_policy(`allow_ftpd_anon_write',`

	miscfiles_manage_public_files(ftpd_t)

')

tunable_policy(`allow_ftpd_use_cifs',`

	fs_read_cifs_files(ftpd_t)

	fs_read_cifs_symlinks(ftpd_t)

')

tunable_policy(`allow_ftpd_use_cifs && allow_ftpd_anon_write',`

	fs_manage_cifs_files(ftpd_t)

')

tunable_policy(`allow_ftpd_use_nfs',`

	fs_read_nfs_files(ftpd_t)

	fs_read_nfs_symlinks(ftpd_t)

')

tunable_policy(`allow_ftpd_use_nfs && allow_ftpd_anon_write',`

	fs_manage_nfs_files(ftpd_t)

')

tunable_policy(`allow_ftpd_full_access',`

	allow ftpd_t self:capability { dac_override dac_read_search };

	auth_manage_all_files_except_shadow(ftpd_t)

')

tunable_policy(`ftp_home_dir',`

	allow ftpd_t self:capability { dac_override dac_read_search };

	# allow access to /home

	files_list_home(ftpd_t)

	userdom_read_all_users_home_content_files(ftpd_t)

	userdom_manage_all_users_home_content_dirs(ftpd_t)

	userdom_manage_all_users_home_content_files(ftpd_t)

	userdom_manage_all_users_home_content_symlinks(ftpd_t)

')

tunable_policy(`ftp_home_dir && use_nfs_home_dirs',`

	fs_manage_nfs_files(ftpd_t)

	fs_read_nfs_symlinks(ftpd_t)

')

tunable_policy(`ftp_home_dir && use_samba_home_dirs',`

	fs_manage_cifs_files(ftpd_t)

	fs_read_cifs_symlinks(ftpd_t)

')

optional_policy(`

	tunable_policy(`ftp_home_dir',`

		apache_search_sys_content(ftpd_t)

	')

')

optional_policy(`

	corecmd_exec_shell(ftpd_t)

	files_read_usr_files(ftpd_t)

       	cron_system_entry(ftpd_t, ftpd_exec_t)

	optional_policy(`

		logrotate_exec(ftpd_t)

	')

')

optional_policy(`

	daemontools_service_domain(ftpd_t, ftpd_exec_t)

')

optional_policy(`

	kerberos_read_keytab(ftpd_t)

')

optional_policy(`

	inetd_tcp_service_domain(ftpd_t,ftpd_exec_t)

	optional_policy(`

		tcpd_domtrans(tcpd_t)

	')

')

optional_policy(`

	seutil_sigchld_newrole(ftpd_t)

')

optional_policy(`

	udev_read_db(ftpd_t)

')

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

#

# ftpdctl local policy

#

# Allow ftpdctl to talk to ftpd over a socket connection

stream_connect_pattern(ftpdctl_t,ftpd_var_run_t,ftpd_var_run_t,ftpd_t)

# ftpdctl creates a socket so that the daemon can perform

# access control decisions (see comments in ftpd_t rules above)

allow ftpdctl_t ftpdctl_tmp_t:sock_file { create setattr };

files_tmp_filetrans(ftpdctl_t, ftpdctl_tmp_t, sock_file)

# Allow ftpdctl to read config files

files_read_etc_files(ftpdctl_t)

libs_use_ld_so(ftpdctl_t)

libs_use_shared_libs(ftpdctl_t)