screen.te

policy_module(screen, 2.9.0)

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

attribute screen_domain;

attribute_role screen_roles;

type screen_exec_t;
application_executable_file(screen_exec_t)

type screen_home_t;
userdom_user_home_content(screen_home_t)

type screen_tmp_t;
userdom_user_tmp_file(screen_tmp_t)

type screen_runtime_t;
typealias screen_runtime_t alias screen_var_run_t;
files_pid_file(screen_runtime_t)
ubac_constrained(screen_runtime_t)

########################################
#
# Common screen domain local policy
#

# dac_override : read /dev/pts/ID
allow screen_domain self:capability { dac_override fsetid setgid setuid };
allow screen_domain self:process signal_perms;
allow screen_domain self:fd use;
allow screen_domain self:fifo_file rw_fifo_file_perms;
allow screen_domain self:tcp_socket { accept listen };
allow screen_domain self:unix_stream_socket { accept connectto listen };

manage_dirs_pattern(screen_domain, screen_tmp_t, screen_tmp_t)
manage_files_pattern(screen_domain, screen_tmp_t, screen_tmp_t)
manage_fifo_files_pattern(screen_domain, screen_tmp_t, screen_tmp_t)
files_tmp_filetrans(screen_domain, screen_tmp_t, { file dir })
filetrans_pattern(screen_domain, screen_tmp_t, screen_runtime_t, sock_file)

manage_fifo_files_pattern(screen_domain, screen_runtime_t, screen_runtime_t)
manage_dirs_pattern(screen_domain, screen_runtime_t, screen_runtime_t)
manage_sock_files_pattern(screen_domain, screen_runtime_t, screen_runtime_t)
files_pid_filetrans(screen_domain, screen_runtime_t, dir)

manage_dirs_pattern(screen_domain, screen_home_t, screen_home_t)
read_files_pattern(screen_domain, screen_home_t, screen_home_t)
manage_fifo_files_pattern(screen_domain, screen_home_t, screen_home_t)
read_lnk_files_pattern(screen_domain, screen_home_t, screen_home_t)
userdom_user_home_dir_filetrans(screen_domain, screen_home_t, dir, ".screen")

kernel_read_system_state(screen_domain)
kernel_read_kernel_sysctls(screen_domain)

corecmd_list_bin(screen_domain)
corecmd_read_bin_files(screen_domain)
corecmd_read_bin_pipes(screen_domain)
corecmd_read_bin_sockets(screen_domain)

corenet_all_recvfrom_unlabeled(screen_domain)
corenet_all_recvfrom_netlabel(screen_domain)
corenet_tcp_sendrecv_generic_if(screen_domain)
corenet_tcp_sendrecv_generic_node(screen_domain)
corenet_tcp_sendrecv_all_ports(screen_domain)

corenet_sendrecv_all_client_packets(screen_domain)
corenet_tcp_connect_all_ports(screen_domain)

dev_dontaudit_getattr_all_chr_files(screen_domain)
dev_dontaudit_getattr_all_blk_files(screen_domain)
dev_read_urand(screen_domain)

domain_use_interactive_fds(screen_domain)
domain_sigchld_interactive_fds(screen_domain)
domain_read_all_domains_state(screen_domain)

files_list_home(screen_domain)
files_read_usr_files(screen_domain)

fs_search_auto_mountpoints(screen_domain)
fs_getattr_all_fs(screen_domain)

auth_dontaudit_read_shadow(screen_domain)
auth_dontaudit_exec_utempter(screen_domain)

init_rw_utmp(screen_domain)

logging_send_syslog_msg(screen_domain)

miscfiles_read_localization(screen_domain)

seutil_read_config(screen_domain)

userdom_use_user_terminals(screen_domain)
userdom_create_user_pty(screen_domain)
userdom_setattr_user_ptys(screen_domain)
userdom_setattr_user_ttys(screen_domain)

tunable_policy(`use_samba_home_dirs',`
	fs_manage_cifs_dirs(screen_domain)
	fs_read_cifs_files(screen_domain)
	fs_manage_cifs_named_pipes(screen_domain)
	fs_read_cifs_symlinks(screen_domain)
')

tunable_policy(`use_nfs_home_dirs',`
	fs_manage_nfs_dirs(screen_domain)
	fs_read_nfs_files(screen_domain)
	fs_manage_nfs_named_pipes(screen_domain)
	fs_read_nfs_symlinks(screen_domain)
')