selinux-policy/policy/modules/services/dovecot.te

policy_module(dovecot, 1.12.0)

########################################
#
# Declarations
#
type dovecot_t;
type dovecot_exec_t;
init_daemon_domain(dovecot_t, dovecot_exec_t)

type dovecot_auth_t;
type dovecot_auth_exec_t;
domain_type(dovecot_auth_t)
domain_entry_file(dovecot_auth_t, dovecot_auth_exec_t)
role system_r types dovecot_auth_t;

type dovecot_auth_tmp_t;
files_tmp_file(dovecot_auth_tmp_t)

type dovecot_cert_t;
miscfiles_cert_type(dovecot_cert_t)

type dovecot_deliver_t;
type dovecot_deliver_exec_t;
domain_type(dovecot_deliver_t)
domain_entry_file(dovecot_deliver_t, dovecot_deliver_exec_t)
role system_r types dovecot_deliver_t;

type dovecot_deliver_tmp_t;
files_tmp_file(dovecot_deliver_tmp_t)

type dovecot_etc_t;
files_config_file(dovecot_etc_t)

type dovecot_initrc_exec_t;
init_script_file(dovecot_initrc_exec_t)

type dovecot_passwd_t;
files_type(dovecot_passwd_t)

type dovecot_spool_t;
files_type(dovecot_spool_t)

type dovecot_tmp_t;
files_tmp_file(dovecot_tmp_t)

# /var/lib/dovecot holds SSL parameters file
type dovecot_var_lib_t;
files_type(dovecot_var_lib_t)

type dovecot_var_log_t;
logging_log_file(dovecot_var_log_t)

type dovecot_var_run_t;
files_pid_file(dovecot_var_run_t)

########################################
#
# dovecot local policy
#

allow dovecot_t self:capability { dac_override dac_read_search chown kill net_bind_service setgid setuid sys_chroot };
dontaudit dovecot_t self:capability sys_tty_config;
allow dovecot_t self:process { setrlimit signal_perms getcap setcap setsched };
allow dovecot_t self:fifo_file rw_fifo_file_perms;
allow dovecot_t self:tcp_socket create_stream_socket_perms;
allow dovecot_t self:unix_dgram_socket create_socket_perms;
allow dovecot_t self:unix_stream_socket { create_stream_socket_perms connectto };

domtrans_pattern(dovecot_t, dovecot_auth_exec_t, dovecot_auth_t)

allow dovecot_t dovecot_auth_t:process signal;

allow dovecot_t dovecot_cert_t:dir list_dir_perms;
read_files_pattern(dovecot_t, dovecot_cert_t, dovecot_cert_t)
read_lnk_files_pattern(dovecot_t, dovecot_cert_t, dovecot_cert_t)

allow dovecot_t dovecot_etc_t:dir list_dir_perms;
read_files_pattern(dovecot_t, dovecot_etc_t, dovecot_etc_t)
files_search_etc(dovecot_t)

can_exec(dovecot_t, dovecot_exec_t)

manage_dirs_pattern(dovecot_t, dovecot_tmp_t, dovecot_tmp_t)
manage_files_pattern(dovecot_t, dovecot_tmp_t, dovecot_tmp_t)
files_tmp_filetrans(dovecot_t, dovecot_tmp_t, { file dir })

# Allow dovecot to create and read SSL parameters file
manage_files_pattern(dovecot_t, dovecot_var_lib_t, dovecot_var_lib_t)
files_search_var_lib(dovecot_t)
files_read_var_symlinks(dovecot_t)

manage_dirs_pattern(dovecot_t, dovecot_var_log_t, dovecot_var_log_t)
manage_files_pattern(dovecot_t, dovecot_var_log_t, dovecot_var_log_t)
logging_log_filetrans(dovecot_t, dovecot_var_log_t, { file dir })

manage_dirs_pattern(dovecot_t, dovecot_spool_t, dovecot_spool_t)
manage_files_pattern(dovecot_t, dovecot_spool_t, dovecot_spool_t)
manage_lnk_files_pattern(dovecot_t, dovecot_spool_t, dovecot_spool_t)

manage_dirs_pattern(dovecot_t, dovecot_var_run_t, dovecot_var_run_t)
manage_files_pattern(dovecot_t, dovecot_var_run_t, dovecot_var_run_t)
manage_lnk_files_pattern(dovecot_t, dovecot_var_run_t, dovecot_var_run_t)
manage_sock_files_pattern(dovecot_t, dovecot_var_run_t, dovecot_var_run_t)
files_pid_filetrans(dovecot_t, dovecot_var_run_t, { dir file })

kernel_read_kernel_sysctls(dovecot_t)
kernel_read_system_state(dovecot_t)

corenet_all_recvfrom_unlabeled(dovecot_t)
corenet_all_recvfrom_netlabel(dovecot_t)
corenet_tcp_sendrecv_generic_if(dovecot_t)
corenet_tcp_sendrecv_generic_node(dovecot_t)
corenet_tcp_sendrecv_all_ports(dovecot_t)
corenet_tcp_bind_generic_node(dovecot_t)
corenet_tcp_bind_mail_port(dovecot_t)
corenet_tcp_bind_pop_port(dovecot_t)
corenet_tcp_connect_all_ports(dovecot_t)
corenet_tcp_connect_postgresql_port(dovecot_t)
corenet_sendrecv_pop_server_packets(dovecot_t)
corenet_sendrecv_all_client_packets(dovecot_t)

dev_read_sysfs(dovecot_t)
dev_read_urand(dovecot_t)

fs_getattr_all_fs(dovecot_t)
fs_getattr_all_dirs(dovecot_t)
fs_search_auto_mountpoints(dovecot_t)
fs_list_inotifyfs(dovecot_t)

corecmd_exec_bin(dovecot_t)

domain_use_interactive_fds(dovecot_t)

files_read_etc_files(dovecot_t)
files_search_spool(dovecot_t)
files_search_tmp(dovecot_t)
files_dontaudit_list_default(dovecot_t)
# Dovecot now has quota support and it uses getmntent() to find the mountpoints.
files_read_etc_runtime_files(dovecot_t)
files_search_all_mountpoints(dovecot_t)

init_getattr_utmp(dovecot_t)

auth_use_nsswitch(dovecot_t)

logging_send_syslog_msg(dovecot_t)

miscfiles_read_generic_certs(dovecot_t)
miscfiles_read_localization(dovecot_t)

userdom_dontaudit_use_unpriv_user_fds(dovecot_t)
userdom_manage_user_home_content_dirs(dovecot_t)
userdom_manage_user_home_content_files(dovecot_t)
userdom_manage_user_home_content_symlinks(dovecot_t)
userdom_manage_user_home_content_pipes(dovecot_t)
userdom_manage_user_home_content_sockets(dovecot_t)
userdom_user_home_dir_filetrans_user_home_content(dovecot_t, { dir file lnk_file fifo_file sock_file })

mta_manage_spool(dovecot_t)

optional_policy(`
	kerberos_keytab_template(dovecot, dovecot_t)
')

optional_policy(`
	postfix_manage_private_sockets(dovecot_t)
	postfix_search_spool(dovecot_t)
')

optional_policy(`
	postgresql_stream_connect(dovecot_t)
')

optional_policy(`
	seutil_sigchld_newrole(dovecot_t)
')

optional_policy(`
	squid_dontaudit_search_cache(dovecot_t)
')

optional_policy(`
	udev_read_db(dovecot_t)
')

########################################
#
# dovecot auth local policy
#

allow dovecot_auth_t self:capability { chown dac_override setgid setuid };
allow dovecot_auth_t self:process { signal_perms getcap setcap };
allow dovecot_auth_t self:fifo_file rw_fifo_file_perms;
allow dovecot_auth_t self:unix_dgram_socket create_socket_perms;
allow dovecot_auth_t self:unix_stream_socket create_stream_socket_perms;

allow dovecot_auth_t dovecot_t:unix_stream_socket { connectto rw_stream_socket_perms };

read_files_pattern(dovecot_auth_t, dovecot_passwd_t, dovecot_passwd_t)

manage_dirs_pattern(dovecot_auth_t, dovecot_auth_tmp_t, dovecot_auth_tmp_t)
manage_files_pattern(dovecot_auth_t, dovecot_auth_tmp_t, dovecot_auth_tmp_t)
files_tmp_filetrans(dovecot_auth_t, dovecot_auth_tmp_t, { file dir })

allow dovecot_auth_t dovecot_var_run_t:dir list_dir_perms;
manage_sock_files_pattern(dovecot_auth_t, dovecot_var_run_t, dovecot_var_run_t)
dovecot_stream_connect_auth(dovecot_auth_t)

kernel_read_all_sysctls(dovecot_auth_t)
kernel_read_system_state(dovecot_auth_t)

logging_send_audit_msgs(dovecot_auth_t)
logging_send_syslog_msg(dovecot_auth_t)

dev_read_urand(dovecot_auth_t)

auth_domtrans_chk_passwd(dovecot_auth_t)
auth_use_nsswitch(dovecot_auth_t)

files_read_etc_files(dovecot_auth_t)
files_read_etc_runtime_files(dovecot_auth_t)
files_search_pids(dovecot_auth_t)
files_read_usr_files(dovecot_auth_t)
files_read_usr_symlinks(dovecot_auth_t)
files_read_var_lib_files(dovecot_auth_t)
files_search_tmp(dovecot_auth_t)
files_read_var_lib_files(dovecot_t)

init_rw_utmp(dovecot_auth_t)

miscfiles_read_localization(dovecot_auth_t)

seutil_dontaudit_search_config(dovecot_auth_t)

optional_policy(`
	kerberos_use(dovecot_auth_t)

	# for gssapi (kerberos)
	userdom_list_user_tmp(dovecot_auth_t)
	userdom_read_user_tmp_files(dovecot_auth_t)
	userdom_read_user_tmp_symlinks(dovecot_auth_t)
')

optional_policy(`
	mysql_search_db(dovecot_auth_t)
	mysql_stream_connect(dovecot_auth_t)
')

optional_policy(`
	nis_authenticate(dovecot_auth_t)
')

optional_policy(`
	postfix_manage_private_sockets(dovecot_auth_t)
	postfix_search_spool(dovecot_auth_t)
')

########################################
#
# dovecot deliver local policy
#
allow dovecot_deliver_t self:unix_dgram_socket create_socket_perms;

allow dovecot_deliver_t dovecot_t:process signull;

read_files_pattern(dovecot_deliver_t, dovecot_etc_t, dovecot_etc_t)
allow dovecot_deliver_t dovecot_var_run_t:dir list_dir_perms;

allow dovecot_deliver_t dovecot_cert_t:dir search_dir_perms;

append_files_pattern(dovecot_deliver_t, dovecot_var_log_t, dovecot_var_log_t)

manage_dirs_pattern(dovecot_deliver_t, dovecot_deliver_tmp_t, dovecot_deliver_tmp_t)
manage_files_pattern(dovecot_deliver_t, dovecot_deliver_tmp_t, dovecot_deliver_tmp_t)
files_tmp_filetrans(dovecot_deliver_t, dovecot_deliver_tmp_t, { file dir })

can_exec(dovecot_deliver_t, dovecot_deliver_exec_t)

kernel_read_all_sysctls(dovecot_deliver_t)
kernel_read_system_state(dovecot_deliver_t)

corecmd_exec_bin(dovecot_deliver_t)

files_read_etc_files(dovecot_deliver_t)
files_read_etc_runtime_files(dovecot_deliver_t)

auth_use_nsswitch(dovecot_deliver_t)

logging_send_syslog_msg(dovecot_deliver_t)
logging_append_all_logs(dovecot_deliver_t)

miscfiles_read_localization(dovecot_deliver_t)

dovecot_stream_connect_auth(dovecot_deliver_t)

files_search_tmp(dovecot_deliver_t)

fs_getattr_all_fs(dovecot_deliver_t)

userdom_manage_user_home_content_dirs(dovecot_deliver_t)
userdom_manage_user_home_content_files(dovecot_deliver_t)
userdom_manage_user_home_content_symlinks(dovecot_deliver_t)
userdom_manage_user_home_content_pipes(dovecot_deliver_t)
userdom_manage_user_home_content_sockets(dovecot_deliver_t)
userdom_user_home_dir_filetrans_user_home_content(dovecot_deliver_t, { dir file lnk_file fifo_file sock_file })

tunable_policy(`use_nfs_home_dirs',`
	fs_manage_nfs_dirs(dovecot_deliver_t)
	fs_manage_nfs_files(dovecot_deliver_t)
	fs_manage_nfs_symlinks(dovecot_deliver_t)
	fs_manage_nfs_dirs(dovecot_t)
	fs_manage_nfs_files(dovecot_t)
	fs_manage_nfs_symlinks(dovecot_t)
')

tunable_policy(`use_samba_home_dirs',`
	fs_manage_cifs_dirs(dovecot_deliver_t)
	fs_manage_cifs_files(dovecot_deliver_t)
	fs_manage_cifs_symlinks(dovecot_deliver_t)
	fs_manage_cifs_dirs(dovecot_t)
	fs_manage_cifs_files(dovecot_t)
	fs_manage_cifs_symlinks(dovecot_t)
')

optional_policy(`
	mta_manage_spool(dovecot_deliver_t)
	mta_read_queue(dovecot_deliver_t)
')