policy_module(nagios, 1.8.1)

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

type nagios_t;
type nagios_exec_t;
init_daemon_domain(nagios_t, nagios_exec_t)

type nagios_etc_t;
files_config_file(nagios_etc_t)

type nagios_initrc_exec_t;
init_script_file(nagios_initrc_exec_t)

type nagios_log_t;
logging_log_file(nagios_log_t)

type nagios_tmp_t;
files_tmp_file(nagios_tmp_t)

type nagios_var_run_t;
files_pid_file(nagios_var_run_t)

type nagios_spool_t;
files_type(nagios_spool_t)

nagios_plugin_template(admin)
nagios_plugin_template(checkdisk)
nagios_plugin_template(mail)
nagios_plugin_template(services)
nagios_plugin_template(system)
nagios_plugin_template(unconfined)

type nagios_system_plugin_tmp_t;
files_tmp_file(nagios_system_plugin_tmp_t)

type nrpe_t;
type nrpe_exec_t;
init_daemon_domain(nrpe_t, nrpe_exec_t)

type nrpe_etc_t;
files_config_file(nrpe_etc_t)

type nrpe_var_run_t;
files_pid_file(nrpe_var_run_t)

########################################
#
# Nagios local policy
#

allow nagios_t self:capability { dac_override setgid setuid };
dontaudit nagios_t self:capability sys_tty_config;
allow nagios_t self:process { setpgid signal_perms };
allow nagios_t self:fifo_file rw_file_perms;
allow nagios_t self:tcp_socket create_stream_socket_perms;
allow nagios_t self:udp_socket create_socket_perms;

read_files_pattern(nagios_t, nagios_etc_t, nagios_etc_t)
read_lnk_files_pattern(nagios_t, nagios_etc_t, nagios_etc_t)
allow nagios_t nagios_etc_t:dir list_dir_perms;

manage_files_pattern(nagios_t, nagios_log_t, nagios_log_t)
manage_fifo_files_pattern(nagios_t, nagios_log_t, nagios_log_t)
logging_log_filetrans(nagios_t, nagios_log_t, { file dir })

manage_dirs_pattern(nagios_t, nagios_tmp_t, nagios_tmp_t)
manage_files_pattern(nagios_t, nagios_tmp_t, nagios_tmp_t)
files_tmp_filetrans(nagios_t, nagios_tmp_t, { file dir })

manage_files_pattern(nagios_t, nagios_var_run_t, nagios_var_run_t)
files_pid_filetrans(nagios_t, nagios_var_run_t, file)

manage_fifo_files_pattern(nagios_t, nagios_spool_t, nagios_spool_t)
files_spool_filetrans(nagios_t, nagios_spool_t, fifo_file)

kernel_read_system_state(nagios_t)
kernel_read_kernel_sysctls(nagios_t)

corecmd_exec_bin(nagios_t)
corecmd_exec_shell(nagios_t)

corenet_all_recvfrom_unlabeled(nagios_t)
corenet_all_recvfrom_netlabel(nagios_t)
corenet_tcp_sendrecv_generic_if(nagios_t)
corenet_udp_sendrecv_generic_if(nagios_t)
corenet_tcp_sendrecv_generic_node(nagios_t)
corenet_udp_sendrecv_generic_node(nagios_t)
corenet_tcp_sendrecv_all_ports(nagios_t)
corenet_udp_sendrecv_all_ports(nagios_t)
corenet_tcp_connect_all_ports(nagios_t)

corenet_dontaudit_tcp_bind_all_reserved_ports(nagios_t)
corenet_dontaudit_udp_bind_all_reserved_ports(nagios_t)

dev_read_sysfs(nagios_t)
dev_read_urand(nagios_t)

domain_use_interactive_fds(nagios_t)
# for ps
domain_read_all_domains_state(nagios_t)

files_read_etc_files(nagios_t)
files_read_etc_runtime_files(nagios_t)
files_read_kernel_symbol_table(nagios_t)
files_search_spool(nagios_t)

fs_getattr_all_fs(nagios_t)
fs_search_auto_mountpoints(nagios_t)

# for who
init_read_utmp(nagios_t)

auth_use_nsswitch(nagios_t)

logging_send_syslog_msg(nagios_t)

miscfiles_read_localization(nagios_t)

userdom_dontaudit_use_unpriv_user_fds(nagios_t)
userdom_dontaudit_search_user_home_dirs(nagios_t)

mta_send_mail(nagios_t)

optional_policy(`
	netutils_domtrans_ping(nagios_t)
	netutils_signal_ping(nagios_t)
	netutils_kill_ping(nagios_t)
')

optional_policy(`
	seutil_sigchld_newrole(nagios_t)
')

optional_policy(`
	udev_read_db(nagios_t)
')

########################################
#
# Nagios CGI local policy
#
optional_policy(`
	apache_content_template(nagios)
	typealias httpd_nagios_script_t alias nagios_cgi_t;
	typealias httpd_nagios_script_exec_t alias nagios_cgi_exec_t;

	allow httpd_nagios_script_t self:process signal_perms;

	read_files_pattern(httpd_nagios_script_t, nagios_t, nagios_t)
	read_lnk_files_pattern(httpd_nagios_script_t, nagios_t, nagios_t)

	files_search_spool(httpd_nagios_script_t)
	rw_fifo_files_pattern(httpd_nagios_script_t, nagios_spool_t, nagios_spool_t)

	allow httpd_nagios_script_t nagios_etc_t:dir list_dir_perms;
	read_files_pattern(httpd_nagios_script_t, nagios_etc_t, nagios_etc_t)
	read_lnk_files_pattern(httpd_nagios_script_t, nagios_etc_t, nagios_etc_t)

	allow httpd_nagios_script_t nagios_log_t:dir list_dir_perms;
	read_files_pattern(httpd_nagios_script_t, nagios_etc_t, nagios_log_t)
	read_lnk_files_pattern(httpd_nagios_script_t, nagios_etc_t, nagios_log_t)

	kernel_read_system_state(httpd_nagios_script_t)

	domain_dontaudit_read_all_domains_state(httpd_nagios_script_t)

	files_read_etc_runtime_files(httpd_nagios_script_t)
	files_read_kernel_symbol_table(httpd_nagios_script_t)

	logging_send_syslog_msg(httpd_nagios_script_t)
')

########################################
#
# Nagios remote plugin executor local policy
#

allow nrpe_t self:capability { setuid setgid };
dontaudit nrpe_t self:capability {sys_tty_config sys_resource};
allow nrpe_t self:process { setpgid signal_perms setsched setrlimit };
allow nrpe_t self:fifo_file rw_fifo_file_perms;
allow nrpe_t self:tcp_socket create_stream_socket_perms;

domtrans_pattern(nrpe_t, nagios_checkdisk_plugin_exec_t, nagios_checkdisk_plugin_t)

read_files_pattern(nrpe_t, nagios_etc_t, nagios_etc_t)
files_search_etc(nrpe_t)

manage_files_pattern(nrpe_t, nrpe_var_run_t, nrpe_var_run_t)
files_pid_filetrans(nrpe_t, nrpe_var_run_t, file)

kernel_read_system_state(nrpe_t)
kernel_read_kernel_sysctls(nrpe_t)

corecmd_exec_bin(nrpe_t)
corecmd_exec_shell(nrpe_t)

corenet_tcp_bind_generic_node(nrpe_t)
corenet_tcp_bind_inetd_child_port(nrpe_t)
corenet_sendrecv_unlabeled_packets(nrpe_t)

dev_read_sysfs(nrpe_t)
dev_read_urand(nrpe_t)

domain_use_interactive_fds(nrpe_t)
domain_read_all_domains_state(nrpe_t)

files_read_etc_runtime_files(nrpe_t)
files_read_etc_files(nrpe_t)

fs_getattr_all_fs(nrpe_t)
fs_search_auto_mountpoints(nrpe_t)

auth_use_nsswitch(nrpe_t)

logging_send_syslog_msg(nrpe_t)

miscfiles_read_localization(nrpe_t)

userdom_dontaudit_use_unpriv_user_fds(nrpe_t)

optional_policy(`
	inetd_tcp_service_domain(nrpe_t, nrpe_exec_t)
')

optional_policy(`
	mta_send_mail(nrpe_t)
')

optional_policy(`
	seutil_sigchld_newrole(nrpe_t)
')

optional_policy(`
	tcpd_wrapped_domain(nrpe_t, nrpe_exec_t)
')

optional_policy(`
	udev_read_db(nrpe_t)
')

#####################################
#
# local policy for admin check plugins
#

corecmd_read_bin_files(nagios_admin_plugin_t)
corecmd_read_bin_symlinks(nagios_admin_plugin_t)

dev_read_urand(nagios_admin_plugin_t)
dev_getattr_all_chr_files(nagios_admin_plugin_t)
dev_getattr_all_blk_files(nagios_admin_plugin_t)

files_read_etc_files(nagios_admin_plugin_t)
# for check_file_age plugin
files_getattr_all_dirs(nagios_admin_plugin_t)
files_getattr_all_files(nagios_admin_plugin_t)
files_getattr_all_symlinks(nagios_admin_plugin_t)
files_getattr_all_pipes(nagios_admin_plugin_t)
files_getattr_all_sockets(nagios_admin_plugin_t)
files_getattr_all_file_type_fs(nagios_admin_plugin_t)

######################################
#
# local policy for mail check plugins
#

allow nagios_mail_plugin_t self:capability { setuid setgid dac_override };

allow nagios_mail_plugin_t self:netlink_route_socket r_netlink_socket_perms;
allow nagios_mail_plugin_t self:tcp_socket create_stream_socket_perms;
allow nagios_mail_plugin_t self:udp_socket create_socket_perms;

kernel_read_system_state(nagios_mail_plugin_t)
kernel_read_kernel_sysctls(nagios_mail_plugin_t)

corecmd_read_bin_files(nagios_mail_plugin_t)
corecmd_read_bin_symlinks(nagios_mail_plugin_t)

dev_read_urand(nagios_mail_plugin_t)

files_read_etc_files(nagios_mail_plugin_t)

logging_send_syslog_msg(nagios_mail_plugin_t)

sysnet_read_config(nagios_mail_plugin_t)

optional_policy(`
	mta_send_mail(nagios_mail_plugin_t)
')

optional_policy(`
	nscd_dontaudit_search_pid(nagios_mail_plugin_t)
')

optional_policy(`
	postfix_stream_connect_master(nagios_mail_plugin_t)
	posftix_exec_postqueue(nagios_mail_plugin_t)
')

######################################
#
# local policy for disk check plugins
#

# needed by ioctl()
allow nagios_checkdisk_plugin_t self:capability { sys_admin sys_rawio };

files_read_etc_runtime_files(nagios_checkdisk_plugin_t)

fs_getattr_all_fs(nagios_checkdisk_plugin_t)

storage_raw_read_fixed_disk(nagios_checkdisk_plugin_t)

#######################################
#
# local policy for service check plugins
#

allow nagios_services_plugin_t self:capability { net_bind_service net_raw };
allow nagios_services_plugin_t self:process { signal sigkill };

allow nagios_services_plugin_t self:tcp_socket create_stream_socket_perms;
allow nagios_services_plugin_t self:udp_socket create_socket_perms;

corecmd_exec_bin(nagios_services_plugin_t)

corenet_tcp_connect_all_ports(nagios_services_plugin_t)
corenet_udp_bind_dhcpc_port(nagios_services_plugin_t)

auth_use_nsswitch(nagios_services_plugin_t)

domain_read_all_domains_state(nagios_services_plugin_t)

files_read_usr_files(nagios_services_plugin_t)

optional_policy(`
	netutils_domtrans_ping(nagios_services_plugin_t)
')

optional_policy(`
	mysql_stream_connect(nagios_services_plugin_t)
')

optional_policy(`
	snmp_read_snmp_var_lib_files(nagios_services_plugin_t)
')

######################################
#
# local policy for system check plugins
#

allow nagios_system_plugin_t self:capability dac_override;
dontaudit nagios_system_plugin_t self:capability { setuid setgid };

# check_log
manage_files_pattern(nagios_system_plugin_t, nagios_system_plugin_tmp_t, nagios_system_plugin_tmp_t)
manage_dirs_pattern(nagios_system_plugin_t, nagios_system_plugin_tmp_t, nagios_system_plugin_tmp_t)
files_tmp_filetrans(nagios_system_plugin_t, nagios_system_plugin_tmp_t, { dir file })

kernel_read_system_state(nagios_system_plugin_t)
kernel_read_kernel_sysctls(nagios_system_plugin_t)

corecmd_exec_bin(nagios_system_plugin_t)
corecmd_exec_shell(nagios_system_plugin_t)

dev_read_sysfs(nagios_system_plugin_t)
dev_read_urand(nagios_system_plugin_t)

domain_read_all_domains_state(nagios_system_plugin_t)

files_read_etc_files(nagios_system_plugin_t)

# needed by check_users plugin
optional_policy(`
	init_read_utmp(nagios_system_plugin_t)
')

########################################
#
# Unconfined plugin policy
#

optional_policy(`
	unconfined_domain(nagios_unconfined_plugin_t)
')