selinux-policy/refpolicy/policy/modules/apps/irc.if

## <summary>IRC client policy</summary>

#######################################
## <summary>
##	The per user domain template for the irc module.
## </summary>
## <desc>
##	<p>
##	This template creates a derived domains which are used
##	for an irc client sessions.
##	</p>
##	<p>
##	This template is invoked automatically for each user, and
##	generally does not need to be invoked directly
##	by policy writers.
##	</p>
## </desc>
## <param name="userdomain_prefix">
##	The prefix of the user domain (e.g., user
##	is the prefix for user_t).
## </param>
## <param name="user_domain">
##	The type of the user domain.
## </param>
## <param name="user_role">
##	The role associated with the user domain.
## </param>
#
template(`irc_per_userdomain_template',`
	gen_require(`
		type irc_exec_t;
	')

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

	type $1_irc_t;
	domain_type($1_irc_t)
	domain_entry_file($1_irc_t,irc_exec_t)
	role $3 types $1_irc_t;

	type $1_irc_exec_t;
	userdom_home_file($1,$1_irc_exec_t)
	domain_entry_file($1_irc_t,$1_irc_exec_t)

	type $1_irc_home_t;
	userdom_home_file($1,$1_irc_home_t)
	
	########################################
	#
	# Local policy
	#

	allow $1_irc_t self:dir search;
	allow $1_irc_t self:lnk_file read;
	allow $1_irc_t self:unix_stream_socket create_stream_socket_perms;
	allow $1_irc_t self:tcp_socket create_socket_perms;
	allow $1_irc_t self:udp_socket create_socket_perms;

	allow $1_irc_t $1_irc_home_t:dir create_dir_perms;
	allow $1_irc_t $1_irc_home_t:file create_file_perms;
	allow $1_irc_t $1_irc_home_t:lnk_file create_lnk_perms;
	userdom_create_user_home($1,$1_irc_t,{ dir file lnk_file },$1_irc_home_t)

	# access files under /tmp
	allow $1_irc_t $1_tmp_t:dir create_dir_perms;
	allow $1_irc_t $1_tmp_t:file create_file_perms;
	allow $1_irc_t $1_tmp_t:lnk_file create_lnk_perms;
	allow $1_irc_t $1_tmp_t:sock_file create_file_perms;
	allow $1_irc_t $1_tmp_t:fifo_file create_file_perms;
	files_filetrans_tmp($1_irc_t,$1_tmp_t,{ file dir lnk_file sock_file fifo_file })

	# Transition from the user domain to the derived domain.
	domain_auto_trans($2,irc_exec_t,$1_irc_t)
	allow $2 $1_irc_t:fd use;
	allow $1_irc_t $2:fd use;
	allow $1_irc_t $2:fifo_file rw_file_perms;
	allow $1_irc_t $2:process sigchld;
	
	allow $2 $1_irc_t:process signal;

	allow $2 $1_irc_exec_t:file { relabelfrom relabelto create_file_perms };

	# allow ps to show irc
	allow $2 $1_irc_t:dir { search getattr read };
	allow $2 $1_irc_t:{ file lnk_file } { read getattr };
	allow $2 $1_irc_t:process getattr;
	# We need to suppress this denial because procps tries to access
	# /proc/pid/environ and this now triggers a ptrace check in recent kernels
	# (2.4 and 2.6).  Might want to change procps to not do this, or only if
	# running in a privileged domain.
	dontaudit $2 $1_irc_t:process ptrace;
	
	kernel_read_proc_symlinks($1_irc_t)

	corenet_non_ipsec_sendrecv($1_irc_t)
	corenet_tcp_sendrecv_generic_if($1_irc_t)
	corenet_udp_sendrecv_generic_if($1_irc_t)
	corenet_raw_sendrecv_generic_if($1_irc_t)
	corenet_tcp_sendrecv_all_nodes($1_irc_t)
	corenet_udp_sendrecv_all_nodes($1_irc_t)
	corenet_raw_sendrecv_all_nodes($1_irc_t)
	corenet_tcp_sendrecv_all_ports($1_irc_t)
	corenet_udp_sendrecv_all_ports($1_irc_t)
	corenet_tcp_bind_all_nodes($1_irc_t)
	corenet_udp_bind_all_nodes($1_irc_t)
	# cjp: this seems excessive:
	corenet_tcp_connect_all_ports($1_irc_t)

	domain_use_wide_inherit_fd($1_irc_t)

	files_dontaudit_search_pids($1_irc_t)
	files_search_var($1_irc_t)
	files_read_etc_files($1_irc_t)
	files_read_usr_files($1_irc_t)

	fs_getattr_xattr_fs($1_irc_t)
	fs_search_auto_mountpoints($1_irc_t)

	term_use_controlling_term($1_irc_t)
	term_list_ptys($1_irc_t)

	# allow utmp access
	init_read_script_pid($1_irc_t)
	init_dontaudit_lock_pid($1_irc_t)

	libs_use_ld_so($1_irc_t)
	libs_use_shared_libs($1_irc_t)

	miscfiles_read_localization($1_irc_t)

	# Inherit and use descriptors from newrole.
	seutil_use_newrole_fd($1_irc_t)

	sysnet_read_config($1_irc_t)

	# Write to the user domain tty.
	userdom_use_user_terminals($1,$1_irc_t)

	tunable_policy(`use_nfs_home_dirs',`
		fs_manage_nfs_dirs($1_irc_t)
		fs_manage_nfs_files($1_irc_t)
		fs_manage_nfs_symlinks($1_irc_t)
	')

	tunable_policy(`use_samba_home_dirs',`
		fs_manage_cifs_dirs($1_irc_t)
		fs_manage_cifs_files($1_irc_t)
		fs_manage_cifs_symlinks($1_irc_t)
	')

	optional_policy(`nis',`
		nis_use_ypbind($1_irc_t)
	')
	
	ifdef(`TODO',`
		optional_policy(`ircd.te', `
			allow $1_irc_t ircd_t:tcp_socket { connectto recvfrom };
			allow ircd_t $1_irc_t:tcp_socket { acceptfrom recvfrom };
			kernel_tcp_recvfrom($1_irc_t)
			kernel_tcp_recvfrom(ircd_t)
		')
	')
')