policy_module(ossec,1.0.45)

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

type ossec_t;
type ossec_bin_t;
type ossec_exec_t;
#role system_r types ossec_t;
#domain_type(ossec_t)
#domain_entry_file(ossec_t, ossec_exec_t)
init_daemon_domain(ossec_t, ossec_exec_t)

optional_policy(`
        ossec_domtrans(httpd_t)
')

type ossec_initrc_exec_t;
init_script_file(ossec_initrc_exec_t)

type ossec_var_t;
files_type(ossec_var_t)

type ossec_var_run_t;
files_pid_file(ossec_var_run_t)

type ossec_tmp_t;
files_tmp_file(ossec_tmp_t)

type ossec_log_t;
logging_log_file(ossec_log_t)

type ossec_etc_t;
files_config_file(ossec_etc_t)

type ossec_etc_share_t;
files_config_file(ossec_etc_share_t)

type ossec_rule_t;
files_config_file(ossec_rule_t)

type ossec_stats_t;
files_type(ossec_stats_t)

type ossec_queue_t;
files_type(ossec_queue_t)

type ossec_script_t;
files_type(ossec_script_t)

type ossec_port_t;
corenet_port(ossec_port_t)
#create_port_type_interfaces(ossec_port_t, tcp,1514,s0, udp,1514,s0)
#create_packet_interfaces($1_client)
#create_packet_interfaces($1_server)
#network_port(ossec_port_t, tcp,1514,s0)
#network_port(ossec, tcp,1514,s0, udp,1514,s0)

require {
	type ossec_t;
	type ossec_initrc_exec_t;
	type ossec_var_run_t;
	type ossec_bin_t;
	type ossec_exec_t;
	type ossec_var_t;
	type ossec_tmp_t;
	type ossec_log_t;
	type ossec_etc_t;
	type ossec_etc_share_t;
	type ossec_rule_t;
	type ossec_stats_t;
	type ossec_queue_t;
	type ossec_script_t;
	type ossec_port_t;
	type httpd_t;
	type initrc_t;
	type node_t;
	class file { rename read lock create write getattr unlink open append };
	class dir { write getattr read remove_name create add_name };
	class capability { dac_override dac_read_search setuid setgid fsetid sys_chroot sys_nice };
	class tcp_socket { create name_bind name_connect };
	class udp_socket { create bind name_bind node_bind };
	class unix_dgram_socket { create bind getopt connect sendto };
	class sock_file { unlink };
	class process { setsched };
}


########################################
#
# ossec local policy
#


#============= ossec_t ==============
auth_read_passwd(ossec_t)

# Read /proc/meminfo
kernel_read_system_state(ossec_t)

# Read urandom
dev_read_urand(ossec_t)

# init
allow ossec_t self:capability { dac_override dac_read_search setuid setgid fsetid sys_chroot sys_nice };
allow ossec_t self:process { setsched };

# etc dir
#files_read_etc_files(ossec_t)
sysnet_read_config(ossec_t)

# var dir
rw_dirs_pattern(ossec_t, ossec_var_t, ossec_var_t)
#rw_files_pattern(ossec_t, ossec_var_t, ossec_var_t)
#create_files_pattern(ossec_t, ossec_var_t, ossec_var_t)
manage_files_pattern(ossec_t, ossec_var_t, ossec_var_t)
manage_sock_files_pattern(ossec_t, ossec_var_t, ossec_var_t)

# queue dir
rw_dirs_pattern(ossec_t, ossec_queue_t, ossec_queue_t)
rw_files_pattern(ossec_t, ossec_queue_t, ossec_queue_t)
manage_sock_files_pattern(ossec_t, ossec_queue_t, ossec_queue_t)

# stats dir
rw_dirs_pattern(ossec_t, ossec_stats_t, ossec_stats_t)
rw_files_pattern(ossec_t, ossec_stats_t, ossec_stats_t)

# rules dir
read_files_pattern(ossec_t, ossec_rule_t, ossec_rule_t)

# logs
#logging_log_filetrans(ossec_t, ossec_log_t, file)
#create_files_pattern(ossec_t, ossec_log_t, ossec_log_t)
#read_files_pattern(ossec_t, ossec_log_t, ossec_log_t)
#append_files_pattern(ossec_t, ossec_log_t, ossec_log_t)
#delete_files_pattern(ossec_t, ossec_log_t, ossec_log_t)
manage_files_pattern(ossec_t, ossec_log_t, ossec_log_t)
ossec_log_filetrans(ossec_t, ossec_log_t, file)

# system logs
logging_read_all_logs(ossec_t)


# Allow reading ossec config
allow ossec_t ossec_etc_t:dir list_dir_perms;
read_files_pattern(ossec_t, ossec_etc_t, ossec_etc_t)
read_lnk_files_pattern(ossec_t, ossec_etc_t, ossec_etc_t)

# Allow rw etc/shared
rw_dirs_pattern(ossec_t, ossec_etc_share_t, ossec_etc_share_t);
manage_files_pattern(ossec_t, ossec_etc_share_t, ossec_etc_share_t);

# Sockets
allow ossec_t self:udp_socket { create bind node_bind };
allow ossec_t node_t:udp_socket { node_bind };
allow ossec_t ossec_port_t:udp_socket { create_socket_perms create name_bind };
#allow ossec_t self:udp_socket { create_socket_perms name_bind };
#allow ossec_t self:udp_socket name_bind;

allow ossec_t self:unix_dgram_socket { create bind getopt connect sendto };

#============= httpd_t ==============
allow httpd_t ossec_log_t:dir { read };
allow httpd_t ossec_log_t:file { open read getattr };

allow httpd_t ossec_queue_t:dir { read };
allow httpd_t ossec_queue_t:file { open read getattr };

allow httpd_t ossec_stats_t:dir { read };
allow httpd_t ossec_stats_t:file { open read getattr };