## <summary>Periodic execution of scheduled commands.</summary>

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

## <summary>

##	The common rules for a crontab domain.

## </summary>

## <param name="userdomain_prefix">

##	<summary>

##	The prefix of the user domain (e.g., user

##	is the prefix for user_t).

##	</summary>

## </param>

#

template(`cron_common_crontab_template',`

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

	#

	# Declarations

	#

	type $1_t;

	application_domain($1_t, crontab_exec_t)

	ubac_constrained($1_t)

	type $1_tmp_t;

	files_tmp_file($1_tmp_t)

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

	#

	# Local policy

	#

	# dac_override is to create the file in the directory under /tmp

	allow $1_t self:capability { fowner setuid setgid chown dac_override };

	allow $1_t self:process signal_perms;

	allow $1_t $1_tmp_t:file manage_file_perms;

	files_tmp_filetrans($1_t,$1_tmp_t,file)

	# create files in /var/spool/cron

	# cjp: change this to a role transition

	manage_files_pattern($1_t, cron_spool_t, user_cron_spool_t)

	filetrans_pattern($1_t, cron_spool_t, user_cron_spool_t, file)

	files_search_spool($1_t)

	# crontab signals crond by updating the mtime on the spooldir

	allow $1_t cron_spool_t:dir setattr;

	kernel_read_system_state($1_t)

	# for the checks used by crontab -u

	selinux_dontaudit_search_fs($1_t)

	fs_getattr_xattr_fs($1_t)

	domain_use_interactive_fds($1_t)

	files_read_etc_files($1_t)

	files_dontaudit_search_pids($1_t)

	logging_send_syslog_msg($1_t)

	miscfiles_read_localization($1_t)

	seutil_read_config($1_t)

	userdom_manage_user_tmp_dirs($1_t)

	userdom_manage_user_tmp_files($1_t)

	# Access terminals.

	userdom_use_user_terminals($1_t)

	# Read user crontabs

	userdom_read_user_home_content_files($1_t)

	tunable_policy(`fcron_crond',`

		# fcron wants an instant update of a crontab change for the administrator

		# also crontab does a security check for crontab -u

		dontaudit $1_t crond_t:process signal;

	')

	optional_policy(`

		nscd_socket_use($1_t)

	')

')

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

## <summary>

##	Role access for cron

## </summary>

## <param name="role">

##	<summary>

##	Role allowed access

##	</summary>

## </param>

## <param name="domain">

##	<summary>

##	User domain for the role

##	</summary>

## </param>

#

interface(`cron_role',`

	gen_require(`

		type cronjob_t, crontab_t, crontab_exec_t;

	')

	role $1 types { cronjob_t crontab_t };

	# cronjob shows up in user ps

	ps_process_pattern($2, cronjob_t)

	# Transition from the user domain to the derived domain.

	domtrans_pattern($2, crontab_exec_t, crontab_t)

	# crontab shows up in user ps

	ps_process_pattern($2, crontab_t)

	allow $2 crontab_t:process signal;

	# Run helper programs as the user domain

	#corecmd_bin_domtrans(crontab_t, $2)

	#corecmd_shell_domtrans(crontab_t, $2)

	corecmd_exec_bin(crontab_t)

	corecmd_exec_shell(crontab_t)

	optional_policy(`

		gen_require(`

			class dbus send_msg;

		')

		dbus_stub(cronjob_t)

		allow cronjob_t $2:dbus send_msg;

	')		

')

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

## <summary>

##	Role access for unconfined cronjobs

## </summary>

## <param name="role">

##	<summary>

##	Role allowed access

##	</summary>

## </param>

## <param name="domain">

##	<summary>

##	User domain for the role

##	</summary>

## </param>

#

interface(`cron_unconfined_role',`

	gen_require(`

		type unconfined_cronjob_t, crontab_t, crontab_tmp_t, crontab_exec_t;

	')

	role $1 types { unconfined_cronjob_t crontab_t };

	# cronjob shows up in user ps

	ps_process_pattern($2, unconfined_cronjob_t)

	# Transition from the user domain to the derived domain.

	domtrans_pattern($2, crontab_exec_t, crontab_t)

	# crontab shows up in user ps

	ps_process_pattern($2, crontab_t)

	allow $2 crontab_t:process signal;

	# Run helper programs as the user domain

	#corecmd_bin_domtrans(crontab_t, $2)

	#corecmd_shell_domtrans(crontab_t, $2)

	corecmd_exec_bin(crontab_t)

	corecmd_exec_shell(crontab_t)

	optional_policy(`

		gen_require(`

			class dbus send_msg;

		')

		dbus_stub(unconfined_cronjob_t)

		allow unconfined_cronjob_t $2:dbus send_msg;

	')		

')

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

## <summary>

##	Role access for cron

## </summary>

## <param name="role">

##	<summary>

##	Role allowed access

##	</summary>

## </param>

## <param name="domain">

##	<summary>

##	User domain for the role

##	</summary>

## </param>

#

interface(`cron_admin_role',`

	gen_require(`

		type cronjob_t, crontab_exec_t, admin_crontab_t, admin_crontab_tmp_t;

		class passwd crontab;

	')

	role $1 types { cronjob_t admin_crontab_t admin_crontab_tmp_t };

	# cronjob shows up in user ps

	ps_process_pattern($2, cronjob_t)

	# Manipulate other users crontab.

	allow $2 self:passwd crontab;

	# Transition from the user domain to the derived domain.

	domtrans_pattern($2, crontab_exec_t, admin_crontab_t)

	# crontab shows up in user ps

	ps_process_pattern($2, admin_crontab_t)

	allow $2 admin_crontab_t:process signal;

	# Run helper programs as the user domain

	#corecmd_bin_domtrans(admin_crontab_t, $2)

	#corecmd_shell_domtrans(admin_crontab_t, $2)

	corecmd_exec_bin(admin_crontab_t)

	corecmd_exec_shell(admin_crontab_t)

	optional_policy(`

		gen_require(`

			class dbus send_msg;

		')

		dbus_stub(admin_cronjob_t)

		allow cronjob_t $2:dbus send_msg;

	')		

')

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

## <summary>

##	Make the specified program domain accessable

##	from the system cron jobs.

## </summary>

## <param name="domain">

##	<summary>

##	The type of the process to transition to.

##	</summary>

## </param>

## <param name="entrypoint">

##	<summary>

##	The type of the file used as an entrypoint to this domain.

##	</summary>

## </param>

#

interface(`cron_system_entry',`

	gen_require(`

		type crond_t, system_cronjob_t;

	')

	domain_auto_trans(system_cronjob_t, $2, $1)

	# cjp: perhaps these four rules from the old

	# domain_auto_trans are not needed?

	allow $1 system_cronjob_t:fd use;

	allow $1 system_cronjob_t:fifo_file rw_file_perms;

	allow $1 system_cronjob_t:process sigchld;

	allow $1 crond_t:fifo_file rw_file_perms;

	allow $1 crond_t:fd use;

	allow $1 crond_t:process sigchld;

	role system_r types $1;

')

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

## <summary>

##	Inherit and use a file descriptor

##	from the cron daemon.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_use_fds',`

	gen_require(`

		type crond_t;

	')

	allow $1 crond_t:fd use;

')

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

## <summary>

##	Send a SIGCHLD signal to the cron daemon.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_sigchld',`

	gen_require(`

		type crond_t;

	')

	allow $1 crond_t:process sigchld;

')

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

## <summary>

##	Read a cron daemon unnamed pipe.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_read_pipes',`

	gen_require(`

		type crond_t;

	')

	allow $1 crond_t:fifo_file read_fifo_file_perms;

')

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

## <summary>

##	Do not audit attempts to write cron daemon unnamed pipes.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_dontaudit_write_pipes',`

	gen_require(`

		type crond_t;

	')

	dontaudit $1 crond_t:fifo_file write;

')

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

## <summary>

##	Read and write a cron daemon unnamed pipe.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_rw_pipes',`

	gen_require(`

		type crond_t;

	')

	allow $1 crond_t:fifo_file { getattr read write };

')

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

## <summary>

##	Read, and write cron daemon TCP sockets.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_rw_tcp_sockets',`

	gen_require(`

		type crond_t;

	')

	allow $1 crond_t:tcp_socket { read write };

')

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

## <summary>

##	Search the directory containing user cron tables.

## </summary>

## <param name="domain">

##	<summary>

##	The type of the process to performing this action.

##	</summary>

## </param>

#

interface(`cron_search_spool',`

	gen_require(`

		type cron_spool_t;

	')

	files_search_spool($1)

	allow $1 cron_spool_t:dir search_dir_perms;

')

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

## <summary>

##	Execute anacron in the cron system domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_anacron_domtrans_system_job',`

	gen_require(`

		type system_cronjob_t, anacron_exec_t;

	')

	domtrans_pattern($1,anacron_exec_t,system_cronjob_t)

')

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

## <summary>

##	Inherit and use a file descriptor

##	from system cron jobs.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_use_system_job_fds',`

	gen_require(`

		type system_cronjob_t;

	')

	allow $1 system_cronjob_t:fd use;

')

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

## <summary>

##	Write a system cron job unnamed pipe.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_write_system_job_pipes',`

	gen_require(`

		type system_cronjob_t;

	')

	allow $1 system_cronjob_t:file write;

')

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

## <summary>

##	Read and write a system cron job unnamed pipe.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_rw_system_job_pipes',`

	gen_require(`

		type system_cronjob_t;

	')

	allow $1 system_cronjob_t:fifo_file rw_fifo_file_perms;

')

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

## <summary>

##	Read temporary files from the system cron jobs.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

#

interface(`cron_read_system_job_tmp_files',`

	gen_require(`

		type system_cronjob_tmp_t;

	')

	files_search_tmp($1)

	allow $1 system_cronjob_tmp_t:file read_file_perms;

')

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

## <summary>

##	Do not audit attempts to append temporary

##	files from the system cron jobs.

## </summary>

## <param name="domain">

##	<summary>

##	Domain to not audit.

##	</summary>

## </param>

#

interface(`cron_dontaudit_append_system_job_tmp_files',`

	gen_require(`

		type system_cronjob_tmp_t;

	')

	dontaudit $1 system_cronjob_tmp_t:file append;

')