policy_module(monit, 1.4.0)

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

## <desc>
## <p>
## Allow monit to start/stop services
## </p>
## </desc>
gen_tunable(monit_startstop_services, false)

attribute_role monit_cli_roles;

attribute monit_domain;

type monit_t, monit_domain;
type monit_exec_t;
init_daemon_domain(monit_t, monit_exec_t)

type monit_conf_t alias monit_etc_t;
files_security_file(monit_conf_t) # may contain password for monit webinterface

type monit_initrc_exec_t;
init_script_file(monit_initrc_exec_t)

type monit_cli_t, monit_domain;
application_domain(monit_cli_t, monit_exec_t)
role monit_cli_roles types monit_cli_t;

type monit_log_t;
logging_log_file(monit_log_t)

type monit_runtime_t alias monit_pid_t;
files_runtime_file(monit_runtime_t)

type monit_unit_t;
init_unit_file(monit_unit_t)

type monit_var_lib_t;
files_type(monit_var_lib_t)

########################################
#
# Common monit domain policy
#

allow monit_domain self:unix_stream_socket create_stream_socket_perms;
allow monit_domain monit_t:process { getpgid sigkill signal };

allow monit_domain monit_conf_t:dir list_dir_perms;
allow monit_domain monit_conf_t:file read_file_perms;
allow monit_domain monit_conf_t:lnk_file read_lnk_file_perms;

kernel_read_system_state(monit_domain)

# can not use with attributes
#auth_use_nsswitch(monit_domain)

# read /sys/class/net/eth0 /sys/devices/system/cpu
dev_read_sysfs(monit_domain)
dev_read_urand(monit_domain)

files_getattr_all_mountpoints(monit_domain)

fs_getattr_dos_fs(monit_domain)
fs_getattr_dos_dirs(monit_domain)
fs_getattr_tmpfs(monit_domain)
fs_getattr_xattr_fs(monit_domain)

miscfiles_read_generic_certs(monit_domain)
miscfiles_read_localization(monit_domain)

logging_send_syslog_msg(monit_domain)

# disk usage of sd card
storage_getattr_removable_dev(monit_domain)
storage_getattr_fixed_disk_dev(monit_domain)

########################################
#
# Daemon policy
#

# dac_read_search : read /run/exim/*
# net_raw         : create raw sockets
# sys_ptrace      : trace processes
allow monit_t self:capability { dac_read_search net_raw sys_ptrace };
# setsockopt
dontaudit monit_t self:capability net_admin;

allow monit_t self:fifo_file rw_fifo_file_perms;
allow monit_t self:rawip_socket connected_socket_perms;
allow monit_t self:tcp_socket server_stream_socket_perms;

allow monit_t monit_log_t:file { create read_file_perms append_file_perms };
logging_log_filetrans(monit_t, monit_log_t, file)

allow monit_t monit_runtime_t:file manage_file_perms;
allow monit_t monit_runtime_t:sock_file manage_sock_file_perms;
files_runtime_filetrans(monit_t, monit_runtime_t, { file sock_file })

allow monit_t monit_var_lib_t:dir manage_dir_perms;
allow monit_t monit_var_lib_t:file manage_file_perms;

# entropy
kernel_read_kernel_sysctls(monit_t)
kernel_read_vm_overcommit_sysctl(monit_t)

auth_use_nsswitch(monit_t)

corecmd_exec_bin(monit_t)
corecmd_exec_shell(monit_t)

corenet_tcp_bind_generic_node(monit_t)
corenet_tcp_bind_monit_port(monit_t)
corenet_tcp_connect_all_ports(monit_t)

domain_getattr_all_domains(monit_t)
domain_getpgid_all_domains(monit_t)
domain_read_all_domains_state(monit_t)

files_read_all_runtime_files(monit_t)
files_read_usr_files(monit_t)

selinux_get_enforce_mode(monit_t)

userdom_dontaudit_search_user_home_dirs(monit_t)

ifdef(`init_systemd',`
	# systemctl is-system-running
	init_stream_connect(monit_t)
	init_get_system_status(monit_t)
')

tunable_policy(`monit_startstop_services',`
	init_get_all_units_status(monit_t)
	init_start_all_units(monit_t)
	init_stop_all_units(monit_t)
')

optional_policy(`
	dbus_system_bus_client(monit_t)
')

########################################
#
# Client policy
#

allow monit_cli_t monit_t:unix_stream_socket connectto;

allow monit_cli_t monit_log_t:file { append_file_perms read_file_perms };

allow monit_cli_t monit_runtime_t:file rw_file_perms;
allow monit_cli_t monit_runtime_t:sock_file write;

allow monit_cli_t monit_var_lib_t:dir search_dir_perms;
allow monit_cli_t monit_var_lib_t:file rw_file_perms;

auth_use_nsswitch(monit_cli_t)

corecmd_check_exec_bin_files(monit_cli_t)

corenet_tcp_connect_monit_port(monit_cli_t)

dev_read_rand(monit_cli_t)

domain_use_interactive_fds(monit_cli_t)

files_search_runtime(monit_cli_t)
files_search_var_lib(monit_cli_t)

logging_search_logs(monit_cli_t)

userdom_dontaudit_search_user_home_dirs(monit_cli_t)
userdom_use_inherited_user_terminals(monit_cli_t)