selinux-policy/refpolicy/policy/modules/services/courier.if

## <summary>Courier IMAP and POP3 email servers</summary>

########################################
## <summary>
##	Template for creating courier server processes.
## </summary>
## <param name="prefix">
##	<summary>
##	Prefix name of the server process.
##	</summary>
## </param>
#
template(`courier_domain_template',`

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

	type courier_$1_t;
	type courier_$1_exec_t;
	init_daemon_domain(courier_$1_t,courier_$1_exec_t)

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

	allow courier_$1_t self:capability dac_override;
	dontaudit courier_$1_t self:capability sys_tty_config;
	allow courier_$1_t self:process { setpgid signal_perms };
	allow courier_$1_t self:fifo_file { read write getattr };
	allow courier_$1_t self:tcp_socket create_stream_socket_perms;
	allow courier_$1_t self:udp_socket create_socket_perms;

	can_exec(courier_$1_t, courier_$1_exec_t)

	allow courier_$1_t courier_etc_t:file r_file_perms;
	allow courier_$1_t courier_etc_t:dir r_dir_perms;

	allow courier_$1_t courier_var_run_t:dir rw_dir_perms;
	allow courier_$1_t courier_var_run_t:file create_file_perms;
	allow courier_$1_t courier_var_run_t:lnk_file create_lnk_perms;
	allow courier_$1_t courier_var_run_t:sock_file create_file_perms;
	files_search_pids(courier_$1_t)

	kernel_read_system_state(courier_$1_t)
	kernel_read_kernel_sysctls(courier_$1_t)

	corecmd_exec_bin(courier_$1_t)

	corenet_non_ipsec_sendrecv(courier_$1_t)
	corenet_tcp_sendrecv_generic_if(courier_$1_t)
	corenet_udp_sendrecv_generic_if(courier_$1_t)
	corenet_tcp_sendrecv_all_nodes(courier_$1_t)
	corenet_udp_sendrecv_all_nodes(courier_$1_t)
	corenet_tcp_sendrecv_all_ports(courier_$1_t)
	corenet_udp_sendrecv_all_ports(courier_$1_t)
	corenet_tcp_bind_all_nodes(courier_$1_t)
	corenet_udp_bind_all_nodes(courier_$1_t)

	dev_read_sysfs(courier_$1_t)

	domain_use_interactive_fds(courier_$1_t)

	files_read_etc_files(courier_$1_t)
	files_read_etc_runtime_files(courier_$1_t)
	files_read_usr_files(courier_$1_t)

	fs_getattr_xattr_fs(courier_$1_t)
	fs_search_auto_mountpoints(courier_$1_t)

	term_dontaudit_use_console(courier_$1_t)

	init_use_fds(courier_$1_t)
	init_use_script_ptys(courier_$1_t)

	libs_use_ld_so(courier_$1_t)
	libs_use_shared_libs(courier_$1_t)

	logging_send_syslog_msg(courier_$1_t)

	sysnet_read_config(courier_$1_t)

	userdom_dontaudit_use_unpriv_user_fds(courier_$1_t)

	ifdef(`targeted_policy',`
		term_dontaudit_use_unallocated_ttys(courier_$1_t)
		term_dontaudit_use_generic_ptys(courier_$1_t)
		files_dontaudit_read_root_files(courier_$1_t)
	')

	optional_policy(`
		seutil_sigchld_newrole(courier_$1_t)
	')

	optional_policy(`
		udev_read_db(courier_$1_t)
	')
')

########################################
## <summary>
##	Execute the courier authentication daemon with
##	a domain transition.
## </summary>
## <param name="prefix">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`courier_domtrans_authdaemon',`
	gen_require(`
		type courier_authdaemon_t, courier_authdaemon_exec_t;
	')

	domain_auto_trans($1, courier_authdaemon_exec_t, courier_authdaemon_t)
	allow courier_authdaemon_t $1:fd use;
	allow courier_authdaemon_t $1:fifo_file rw_file_perms;
	allow courier_authdaemon_t $1:process sigchld;
')

########################################
## <summary>
##	Execute the courier POP3 and IMAP server with
##	a domain transition.
## </summary>
## <param name="prefix">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`courier_domtrans_pop',`
	gen_require(`
		type courier_pop_t, courier_pop_exec_t;
	')

	domain_auto_trans($1, courier_pop_exec_t, courier_pop_t)
	allow courier_pop_t $1:fd use;
	allow courier_pop_t $1:fifo_file rw_file_perms;
	allow courier_pop_t $1:process sigchld;
')