## <summary>Net Saint / NAGIOS - network monitoring server</summary>

########################################
## <summary>
##	Create a set of derived types for various
##	nagios plugins,
## </summary>
## <param name="plugins_group_name">
##	<summary>
##	The name to be used for deriving type names.
##	</summary>
## </param>
#
template(`nagios_plugin_template',`
	gen_require(`
		attribute nagios_plugin_domain;
		type nagios_t, nrpe_t;
	')

	type nagios_$1_plugin_t, nagios_plugin_domain;
	type nagios_$1_plugin_exec_t;
	application_domain(nagios_$1_plugin_t, nagios_$1_plugin_exec_t)
	role system_r types nagios_$1_plugin_t;

	domtrans_pattern(nrpe_t, nagios_$1_plugin_exec_t, nagios_$1_plugin_t)
	allow nagios_t nagios_$1_plugin_exec_t:file ioctl; 

	# needed by command.cfg
	domtrans_pattern(nagios_t, nagios_$1_plugin_exec_t, nagios_$1_plugin_t)

	kernel_read_system_state(nagios_$1_plugin_t)

')

########################################
## <summary>
## Execute the nagios unconfined plugins with
## a domain transition.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`nagios_domtrans_unconfined_plugins',`
   gen_require(`
        type nagios_unconfined_plugin_t;
        type nagios_unconfined_plugin_exec_t;
   ')

    domtrans_pattern($1, nagios_unconfined_plugin_exec_t, nagios_unconfined_plugin_t)
')

########################################
## <summary>
##	Do not audit attempts to read or write nagios
##	unnamed pipes.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`nagios_dontaudit_rw_pipes',`
	gen_require(`
		type nagios_t;
	')

	dontaudit $1 nagios_t:fifo_file rw_fifo_file_perms;
')

########################################
## <summary>
##	Allow the specified domain to read
##	nagios configuration files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <rolecap/>
#
interface(`nagios_read_config',`
	gen_require(`
		type nagios_etc_t;
	')

	allow $1 nagios_etc_t:dir list_dir_perms;
	allow $1 nagios_etc_t:file read_file_perms;
	files_search_etc($1)
')
######################################
## <summary>
##	Read nagios lib files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nagios_read_lib',`
	gen_require(`
		type nagios_var_lib_t;
	')

	files_search_var($1)
    list_dirs_pattern($1, nagios_var_lib_t, nagios_var_lib_t)
	read_files_pattern($1, nagios_var_lib_t, nagios_var_lib_t)
')

######################################
## <summary>
##	Read nagios logs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nagios_read_log',`
	gen_require(`
		type nagios_log_t;
	')

	logging_search_logs($1)
	read_files_pattern($1, nagios_log_t, nagios_log_t)
')

########################################
## <summary>
##	Do not audit attempts to read or write nagios logs.
## </summary>
## <param name="domain">
##	<summary>
##	Domain to not audit.
##	</summary>
## </param>
#
interface(`nagios_dontaudit_rw_log',`
	gen_require(`
		type nagios_log_t;
	')

	dontaudit $1 nagios_log_t:file rw_file_perms;
')

########################################
## <summary>
##	Search nagios spool directories.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nagios_search_spool',`
	gen_require(`
		type nagios_spool_t;
	')

	allow $1 nagios_spool_t:dir search_dir_perms;
	files_search_spool($1)
')

########################################
## <summary>
##	Append nagios spool files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nagios_append_spool',`
	gen_require(`
		type nagios_spool_t;
	')

	allow $1 nagios_spool_t:file append_file_perms;
	files_search_spool($1)
')

########################################
## <summary>
##	Allow the specified domain to read
##	nagios temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nagios_read_tmp_files',`
	gen_require(`
		type nagios_tmp_t;
	')

	allow $1 nagios_tmp_t:file read_file_perms;
	files_search_tmp($1)
')

########################################
## <summary>
##	Allow the specified domain to read
##	nagios temporary files.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`nagios_rw_inerited_tmp_files',`
	gen_require(`
		type nagios_tmp_t;
	')

	allow $1 nagios_tmp_t:file rw_inherited_file_perms;
	files_search_tmp($1)
')

########################################
## <summary>
##	Execute the nagios NRPE with
##	a domain transition.
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed to transition.
##	</summary>
## </param>
#
interface(`nagios_domtrans_nrpe',`
	gen_require(`
		type nrpe_t, nrpe_exec_t;
	')

	domtrans_pattern($1, nrpe_exec_t, nrpe_t)
')

######################################
## <summary>
## Do not audit attempts to write nrpe daemon unnamed pipes.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`nagios_dontaudit_write_pipes_nrpe',`
 gen_require(`
                type nrpe_t;
        ')

        dontaudit $1 nrpe_t:fifo_file write;
')

########################################
## <summary>
##	All of the rules required to administrate
##	an nagios environment
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
## <param name="role">
##	<summary>
##	The role to be allowed to manage the nagios domain.
##	</summary>
## </param>
## <rolecap/>
#
interface(`nagios_admin',`
	gen_require(`
		type nagios_t, nrpe_t, nagios_initrc_exec_t;
		type nagios_tmp_t, nagios_log_t, nagios_var_run_t;
		type nagios_etc_t, nrpe_etc_t, nagios_spool_t;
	')

	allow $1 nagios_t:process signal_perms;
	ps_process_pattern($1, nagios_t)
	tunable_policy(`deny_ptrace',`',`
		allow $1 nagios_t:process ptrace;
	')

	init_labeled_script_domtrans($1, nagios_initrc_exec_t)
	domain_system_change_exemption($1)
	role_transition $2 nagios_initrc_exec_t system_r;
	allow $2 system_r;

	files_list_tmp($1)
	admin_pattern($1, nagios_tmp_t)

	logging_list_logs($1)
	admin_pattern($1, nagios_log_t)

	files_list_etc($1)
	admin_pattern($1, nagios_etc_t)

	files_list_spool($1)
	admin_pattern($1, nagios_spool_t)

	files_list_pids($1)
	admin_pattern($1, nagios_var_run_t)

	admin_pattern($1, nrpe_etc_t)
')

########################################
## <summary>
##      Send a null signal to nagios_unconfined_plugin.
## </summary>
## <param name="domain">
##      <summary>
##      Domain allowed access.
##      </summary>
## </param>
#
interface(`nagios_unconfined_signull',`
	gen_require(`
		type nagios_unconfined_plugin_t;
	')

	allow $1 nagios_unconfined_plugin_t:process signull;
')

########################################
# 
# Nagios interface compatibility blocks
#
# The following definitions ensure compatibility with distribution policy
# versions that do not contain given interfaces (epel, or older Fedora
# releases).
# Each block tests for existence of given interface and defines it if needed.
#

########################################
## <summary>
##	Allow caller to signull sssd.
##	Backport from RHEL8
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
ifndef(`sssd_signull',`
	interface(`sssd_signull',`
		gen_require(`
			type sssd_t;
		')

		allow $1 sssd_t:process signull;
	')
')
