policy_module(courier, 1.13.2)

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

#

# Declarations

#

attribute courier_domain;

courier_domain_template(authdaemon)

courier_domain_template(pcp)

courier_domain_template(pop)

courier_domain_template(tcpd)

courier_domain_template(sqwebmail)

typealias courier_sqwebmail_exec_t alias sqwebmail_cron_exec_t;

type courier_etc_t;

files_config_file(courier_etc_t)

type courier_spool_t;

files_spool_file(courier_spool_t)

type courier_var_lib_t;

files_type(courier_var_lib_t)

type courier_var_run_t;

files_pid_file(courier_var_run_t)

type courier_exec_t;

mta_agent_executable(courier_exec_t)

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

#

# Common local policy

#

allow courier_domain self:capability dac_override;

dontaudit courier_domain self:capability sys_tty_config;

allow courier_domain self:process { setpgid signal_perms };

allow courier_domain self:fifo_file rw_fifo_file_perms;

allow courier_domain self:tcp_socket create_stream_socket_perms;

allow courier_domain self:udp_socket create_socket_perms;

read_files_pattern(courier_domain, courier_etc_t, courier_etc_t)

allow courier_domain courier_etc_t:dir list_dir_perms;

manage_dirs_pattern(courier_domain, courier_var_run_t, courier_var_run_t)

manage_files_pattern(courier_domain, courier_var_run_t, courier_var_run_t)

manage_lnk_files_pattern(courier_domain, courier_var_run_t, courier_var_run_t)

manage_sock_files_pattern(courier_domain, courier_var_run_t, courier_var_run_t)

files_pid_filetrans(courier_domain, courier_var_run_t, dir)

kernel_read_kernel_sysctls(courier_domain)

corecmd_exec_bin(courier_domain)

dev_read_sysfs(courier_domain)

domain_use_interactive_fds(courier_domain)

files_read_etc_runtime_files(courier_domain)

fs_getattr_xattr_fs(courier_domain)

fs_search_auto_mountpoints(courier_domain)

sysnet_read_config(courier_domain)

userdom_dontaudit_use_unpriv_user_fds(courier_domain)

optional_policy(`

	seutil_sigchld_newrole(courier_domain)

')

optional_policy(`

	udev_read_db(courier_domain)

')

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

#

# Authdaemon local policy

#

allow courier_authdaemon_t self:capability { setuid setgid sys_tty_config };

allow courier_authdaemon_t self:unix_stream_socket { accept connectto listen };

create_dirs_pattern(courier_authdaemon_t, courier_var_lib_t, courier_var_lib_t)

manage_sock_files_pattern(courier_authdaemon_t, courier_var_lib_t, courier_var_lib_t)

manage_sock_files_pattern(courier_authdaemon_t, courier_spool_t, courier_spool_t)

allow courier_authdaemon_t courier_tcpd_t:process sigchld;

allow courier_authdaemon_t courier_tcpd_t:fd use;

allow courier_authdaemon_t courier_tcpd_t:fifo_file rw_fifo_file_perms;

allow courier_authdaemon_t courier_tcpd_t:tcp_socket rw_stream_socket_perms;

allow courier_authdaemon_t courier_tcpd_t:unix_stream_socket rw_stream_socket_perms;

can_exec(courier_authdaemon_t, courier_exec_t)

domtrans_pattern(courier_authdaemon_t, courier_pop_exec_t, courier_pop_t)

dev_read_urand(courier_authdaemon_t)

files_getattr_tmp_dirs(courier_authdaemon_t)

files_search_spool(courier_authdaemon_t)

auth_domtrans_chk_passwd(courier_authdaemon_t)

libs_read_lib_files(courier_authdaemon_t)

userdom_dontaudit_search_user_home_dirs(courier_authdaemon_t)

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

#

# Calendar (PCP) local policy

#

allow courier_pcp_t self:capability { setuid setgid };

dev_read_rand(courier_pcp_t)

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

#

# POP3/IMAP local policy

#

allow courier_pop_t courier_authdaemon_t:tcp_socket rw_stream_socket_perms;

allow courier_pop_t courier_authdaemon_t:process sigchld;

allow courier_pop_t courier_tcpd_t:{ unix_stream_socket tcp_socket } rw_stream_socket_perms;

allow courier_pop_t courier_var_lib_t:file rw_inherited_file_perms;

domtrans_pattern(courier_pop_t, courier_authdaemon_exec_t, courier_authdaemon_t)

miscfiles_read_localization(courier_pop_t)

userdom_manage_user_home_content_files(courier_pop_t)

userdom_manage_user_home_content_dirs(courier_pop_t)

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

#

# TCPd local policy

#

allow courier_tcpd_t self:capability kill;

manage_files_pattern(courier_tcpd_t, courier_var_lib_t, courier_var_lib_t)

manage_lnk_files_pattern(courier_tcpd_t, courier_var_lib_t, courier_var_lib_t)

files_search_var_lib(courier_tcpd_t)

can_exec(courier_tcpd_t, courier_exec_t)

domtrans_pattern(courier_tcpd_t, courier_pop_exec_t, courier_pop_t)

corenet_all_recvfrom_unlabeled(courier_tcpd_t)

corenet_all_recvfrom_netlabel(courier_tcpd_t)

corenet_tcp_sendrecv_generic_if(courier_tcpd_t)

corenet_tcp_sendrecv_generic_node(courier_tcpd_t)

corenet_tcp_bind_generic_node(courier_tcpd_t)

corenet_sendrecv_pop_server_packets(courier_tcpd_t)

corenet_tcp_bind_pop_port(courier_tcpd_t)

corenet_tcp_sendrecv_pop_port(courier_tcpd_t)

dev_read_rand(courier_tcpd_t)

dev_read_urand(courier_tcpd_t)

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

#

# Webmail local policy

#

kernel_read_kernel_sysctls(courier_sqwebmail_t)

optional_policy(`

	cron_system_entry(courier_sqwebmail_t, courier_sqwebmail_exec_t)

')