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## <summary>SELinux utility to run a shell with a new role</summary>
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#######################################
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## <summary>
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##	The per role template for the userhelper module.
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## </summary>
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## <desc>
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##	

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##	This template creates a derived domains which are used
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##	for userhelper.
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##	

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##	

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##	This template is invoked automatically for each user, and
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##	generally does not need to be invoked directly
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##	by policy writers.
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##	

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## </desc>
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## <param name="userdomain_prefix">
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##	<summary>
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##	The prefix of the user domain (e.g., user
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##	is the prefix for user_t).
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##	</summary>
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## </param>
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## <param name="user_domain">
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##	<summary>
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##	The type of the user domain.
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##	</summary>
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## </param>
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## <param name="user_role">
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##	<summary>
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##	The role associated with the user domain.
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##	</summary>
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## </param>
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#
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template(`userhelper_per_role_template',`
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	gen_require(`
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		type userhelper_exec_t, userhelper_conf_t;
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	')
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	########################################
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	#
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	# Declarations
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	#
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	type $1_userhelper_t;
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	application_domain($1_userhelper_t,userhelper_exec_t)
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	domain_role_change_exemption($1_userhelper_t)
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	domain_obj_id_change_exemption($1_userhelper_t)
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	domain_interactive_fd($1_userhelper_t)
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	domain_subj_id_change_exemption($1_userhelper_t)
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	role $3 types $1_userhelper_t;
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	########################################
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	#
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	# Local policy
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	#
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	allow $1_userhelper_t self:capability { setuid setgid net_bind_service dac_override chown sys_tty_config };
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	allow $1_userhelper_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
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	allow $1_userhelper_t self:process setexec;
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	allow $1_userhelper_t self:fd use;
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	allow $1_userhelper_t self:fifo_file rw_fifo_file_perms;
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	allow $1_userhelper_t self:shm create_shm_perms;
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	allow $1_userhelper_t self:sem create_sem_perms;
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	allow $1_userhelper_t self:msgq create_msgq_perms;
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	allow $1_userhelper_t self:msg { send receive };
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	allow $1_userhelper_t self:unix_dgram_socket create_socket_perms;
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	allow $1_userhelper_t self:unix_stream_socket create_stream_socket_perms;
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	allow $1_userhelper_t self:unix_dgram_socket sendto;
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	allow $1_userhelper_t self:unix_stream_socket connectto;
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	allow $1_userhelper_t self:sock_file read_sock_file_perms;
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	#Transition to the derived domain.
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	domtrans_pattern($2,userhelper_exec_t,$1_userhelper_t)
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	allow $1_userhelper_t userhelper_conf_t:dir rw_dir_perms;
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	rw_files_pattern($1_userhelper_t,userhelper_conf_t,userhelper_conf_t)
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	can_exec($1_userhelper_t, userhelper_exec_t)
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	dontaudit $2 $1_userhelper_t:process signal;
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	kernel_read_all_sysctls($1_userhelper_t)
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	kernel_getattr_debugfs($1_userhelper_t)
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	kernel_read_system_state($1_userhelper_t)
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	# Execute shells
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	corecmd_exec_shell($1_userhelper_t)
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	# By default, revert to the calling domain when a program is executed
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	corecmd_bin_domtrans($1_userhelper_t,$2)
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	# Inherit descriptors from the current session.
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	domain_use_interactive_fds($1_userhelper_t)
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	# for when the user types "exec userhelper" at the command line
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	domain_sigchld_interactive_fds($1_userhelper_t)
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	dev_read_urand($1_userhelper_t)
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	# Read /dev directories and any symbolic links.
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	dev_list_all_dev_nodes($1_userhelper_t)
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	files_list_var_lib($1_userhelper_t)
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	# Write to utmp.
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	files_pid_filetrans($1_userhelper_t,initrc_var_run_t,file)
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	# Read the /etc/security/default_type file
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	files_read_etc_files($1_userhelper_t)
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	# Read /var.
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	files_read_var_files($1_userhelper_t)
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	files_read_var_symlinks($1_userhelper_t)
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	# for some PAM modules and for cwd
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	files_search_home($1_userhelper_t)
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	fs_search_auto_mountpoints($1_userhelper_t)
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	fs_read_nfs_files($1_userhelper_t)
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	fs_read_nfs_symlinks($1_userhelper_t)
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	# Allow $1_userhelper to obtain contexts to relabel TTYs
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	selinux_get_fs_mount($1_userhelper_t)
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	selinux_validate_context($1_userhelper_t)
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	selinux_compute_access_vector($1_userhelper_t)
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	selinux_compute_create_context($1_userhelper_t)
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	selinux_compute_relabel_context($1_userhelper_t)
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	selinux_compute_user_contexts($1_userhelper_t)
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	# Read the devpts root directory.
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	term_list_ptys($1_userhelper_t)
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	# Relabel terminals.
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	term_relabel_all_user_ttys($1_userhelper_t)
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	term_relabel_all_user_ptys($1_userhelper_t)
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	# Access terminals.
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	term_use_all_user_ttys($1_userhelper_t)
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	term_use_all_user_ptys($1_userhelper_t)
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	auth_domtrans_chk_passwd($1_userhelper_t)
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	auth_manage_pam_pid($1_userhelper_t)
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	auth_manage_var_auth($1_userhelper_t)
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	auth_search_pam_console_data($1_userhelper_t)
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	# Inherit descriptors from the current session.
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	init_use_fds($1_userhelper_t)
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	# Write to utmp.
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	init_manage_utmp($1_userhelper_t)
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	libs_use_ld_so($1_userhelper_t)
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	libs_use_shared_libs($1_userhelper_t)
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	miscfiles_read_localization($1_userhelper_t)
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	seutil_read_config($1_userhelper_t)
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	seutil_read_default_contexts($1_userhelper_t)
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	userdom_use_unpriv_users_fds($1_userhelper_t)
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	# Allow $1_userhelper_t to transition to user domains.
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	userdom_bin_spec_domtrans_unpriv_users($1_userhelper_t)
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	userdom_entry_spec_domtrans_unpriv_users($1_userhelper_t)
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	ifdef(`distro_redhat',`
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		optional_policy(`
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			# Allow transitioning to rpm_t, for up2date
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			rpm_domtrans($1_userhelper_t)
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		')
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	')
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	tunable_policy(`! secure_mode',`
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		#if we are not in secure mode then we can transition to sysadm_t
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		sysadm_bin_spec_domtrans($1_userhelper_t)
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		sysadm_entry_spec_domtrans($1_userhelper_t)
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	')
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	optional_policy(`
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		ethereal_domtrans_user_ethereal($1,$1_userhelper_t)
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	')
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	optional_policy(`
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		logging_send_syslog_msg($1_userhelper_t)
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	')
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	optional_policy(`
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		nis_use_ypbind($1_userhelper_t)
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	')
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	optional_policy(`
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		nscd_socket_use($1_userhelper_t)
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	')
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')
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########################################
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## <summary>
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##	Search the userhelper configuration directory.
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## </summary>
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## <param name="domain">
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##	<summary>
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##      Domain allowed access.
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##	</summary>
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## </param>
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#
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interface(`userhelper_search_config',`
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	gen_require(`
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		type userhelper_conf_t;
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	')
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	allow $1 userhelper_conf_t:dir search_dir_perms;
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')
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########################################
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## <summary>
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##	Do not audit attempts to search 
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##	the userhelper configuration directory.
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## </summary>
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## <param name="domain">
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##	<summary>
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##      Domain to not audit.
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##	</summary>
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## </param>
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#
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interface(`userhelper_dontaudit_search_config',`
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	gen_require(`
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		type userhelper_conf_t;
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	')
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	dontaudit $1 userhelper_conf_t:dir search_dir_perms;
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')
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########################################
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## <summary>
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##	Allow domain to use userhelper file descriptor.
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## </summary>
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## <param name="prefix">
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##	<summary>
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##	The prefix of the domain, example user is the prefix of user_t.
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##	</summary>
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## </param>
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## <param name="domain">
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##	<summary>
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##      Domain allowed access.
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##	</summary>
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## </param>
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#
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template(`userhelper_use_user_fd',`
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	gen_require(`
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		type $1_userhelper_t;
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	')
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	allow $2 $1_userhelper_t:fd use;
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')
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########################################
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## <summary>
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##	Allow domain to send sigchld to userhelper.
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## </summary>
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## <param name="prefix">
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##	<summary>
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##	The prefix of the domain, example user is the prefix of user_t.
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##	</summary>
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## </param>
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## <param name="domain">
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##	<summary>
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##      Domain allowed access.
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##	</summary>
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## </param>
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#
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template(`userhelper_sigchld_user',`
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	gen_require(`
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		type $1_userhelper_t;
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	')
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	allow $2 $1_userhelper_t:process sigchld;
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')
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########################################
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## <summary>
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##	Execute the userhelper program in the caller domain.
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## </summary>
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## <param name="domain">
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##	<summary>
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##	The type of the process performing this action.
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##	</summary>
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## </param>
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#
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interface(`userhelper_exec',`
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	gen_require(`
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		type userhelper_exec_t;
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	')
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	can_exec($1,userhelper_exec_t)
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')