## <summary>SELinux policy module</summary>
## <desc>
## <p>
## SELinux policy module for XChat.
## </p>
## </desc>
#######################################
## <summary>
## The per role template for the XChat module.
## </summary>
## <desc>
## <p>
## This template creates derived domains which are used
## for XChat.
## </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">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
## <param name="user_domain">
## <summary>
## The type of the user domain.
## </summary>
## </param>
## <param name="user_role">
## <summary>
## The role associated with the user domain.
## </summary>
## </param>
#
template(`xchat_per_role_template',`
gen_require(`
type xchat_exec_t;
')
########################################
#
# Declarations
#
type $1_xchat_t;
application_domain($1_xchat_t,xchat_exec_t)
role $3 types $1_xchat_t;
type $1_xchat_home_t alias $1_xchat_rw_t;
files_poly_member($1_xchat_home_t)
userdom_user_home_content($1,$1_xchat_home_t)
type $1_xchat_tmpfs_t;
files_tmpfs_file($1_xchat_tmpfs_t)
########################################
#
# Local Policy
#
# XChat policy for self:
allow $1_xchat_t self:process { signal getsched sigkill };
allow $1_xchat_t self:fifo_file { read write getattr };
allow $1_xchat_t self:netlink_route_socket { getattr write read nlmsg_read create bind };
allow $1_xchat_t self:tcp_socket { create connect setopt write read getattr};
allow $1_xchat_t self:udp_socket { connect read getattr write create };
# XChat policy for interacting with XChat:
allow $1_xchat_t $2:fd use;
# XChat may only manage directories and files in $HOME
manage_dirs_pattern($1_xchat_t,$1_xchat_home_t,$1_xchat_home_t)
manage_files_pattern($1_xchat_t,$1_xchat_home_t,$1_xchat_home_t)
userdom_user_home_dir_filetrans($1,$1_xchat_t,$1_xchat_home_t,{ dir file })
userdom_search_user_home_dirs($1,$1_xchat_t)
userdom_manage_user_home_content_dirs($1,$1_xchat_t)
userdom_manage_user_home_content_files($1,$1_xchat_t)
manage_dirs_pattern($2,$1_xchat_home_t,$1_xchat_home_t)
manage_files_pattern($2,$1_xchat_home_t,$1_xchat_home_t)
relabel_dirs_pattern($2,$1_xchat_home_t,$1_xchat_home_t)
relabel_files_pattern($2,$1_xchat_home_t,$1_xchat_home_t)
# Xchat may have file, dir, link, sock and fifo access to tmpfs.
manage_files_pattern($1_xchat_t,$1_xchat_tmpfs_t,$1_xchat_tmpfs_t)
manage_lnk_files_pattern($1_xchat_t,$1_xchat_tmpfs_t,$1_xchat_tmpfs_t)
manage_fifo_files_pattern($1_xchat_t,$1_xchat_tmpfs_t,$1_xchat_tmpfs_t)
manage_sock_files_pattern($1_xchat_t,$1_xchat_tmpfs_t,$1_xchat_tmpfs_t)
fs_tmpfs_filetrans($1_xchat_t,$1_xchat_tmpfs_t,{ file lnk_file sock_file fifo_file })
fs_rw_tmpfs_files($1_xchat_t)
# XChat may interact using tcp/ip on the network. However it may not bind any sockets to ports
# Caution: denials with regard to binding tcp sockets to ports will not be audited
corenet_tcp_sendrecv_all_ports($1_xchat_t)
corenet_tcp_connect_all_ports($1_xchat_t)
corenet_all_recvfrom_unlabeled($1_xchat_t)
corenet_tcp_sendrecv_all_if($1_xchat_t)
corenet_tcp_sendrecv_all_nodes($1_xchat_t)
corenet_tcp_bind_all_nodes($1_xchat_t)
corenet_dontaudit_tcp_sendrecv_generic_port($1_xchat_t)
corenet_dontaudit_tcp_bind_generic_port($1_xchat_t)
# XChat may retrieve state and configuration info about this system
# Without these permissions XChat may still work!
kernel_read_system_state($1_xchat_t)
sysnet_read_config($1_xchat_t)
# XChat may read /etc and /usr, dir files and links
# Without these permissions XChat may still work!
files_read_etc_files($1_xchat_t)
files_read_etc_symlinks($1_xchat_t)
files_read_usr_files($1_xchat_t)
files_read_usr_symlinks($1_xchat_t)
# Do not audit XChat encounters with unlabeled objects
kernel_dontaudit_list_unlabeled($1_xchat_t)
kernel_dontaudit_getattr_unlabeled_files($1_xchat_t)
kernel_dontaudit_read_unlabeled_files($1_xchat_t)
# Filesystem related. Do not audit. For explanation refer to refpolicy.
files_dontaudit_list_non_security($1_xchat_t)
files_dontaudit_getattr_non_security_files($1_xchat_t)
fs_dontaudit_getattr_all_fs($1_xchat_t)
# XChat may get attributes of our systems filesystem
dev_getattr_sysfs_dirs($1_xchat_t)
# XChat may search auto mountpoints
fs_search_auto_mountpoints($1_xchat_t)
# XChat may listinotify filessystem
fs_list_inotifyfs($1_xchat_t)
# XChat auto transition pattern
domain_auto_trans($2, xchat_exec_t, $1_xchat_t)
# Rules with regard to auto transition
allow $2 $1_xchat_t:process { noatsecure siginh rlimitinh };
# XChat process pattern
ps_process_pattern($2,$1_xchat_t)
# Rules with regard to process
allow $2 $1_xchat_t:process signal_perms;
# XChat calls to interfaces in other domains:
libs_exec_lib_files($1_xchat_t)
corecmd_bin_entry_type($1_xchat_t)
dev_read_urand($1_xchat_t)
dbus_connect_system_bus($1_xchat_t)
dbus_send_system_bus($1_xchat_t)
libs_use_ld_so($1_xchat_t)
miscfiles_read_localization($1_xchat_t)
# This is the X Server interface that we use to display XChat
xserver_user_client_template($1,$1_xchat_t,$1_xchat_tmpfs_t)
# All other stuff related to X Server is denied
xserver_dontaudit_read_xdm_tmp_files($1_xchat_t)
xserver_dontaudit_getattr_xdm_tmp_sockets($1_xchat_t)
# XChat policy for NFS and Samba $HOME
tunable_policy(`use_nfs_home_dirs',`
fs_manage_nfs_dirs($1_xchat_t)
fs_manage_nfs_files($1_xchat_t)
fs_manage_nfs_symlinks($1_xchat_t)
')
tunable_policy(`use_samba_home_dirs',`
fs_manage_cifs_dirs($1_xchat_t)
fs_manage_cifs_files($1_xchat_t)
fs_manage_cifs_symlinks($1_xchat_t)
')
')
########################################
## <summary>
## Read XChat per user homedir
## </summary>
## <desc>
## <p>
## Read XChat per user homedir
## </p>
## <p>
## This is a templated interface, and should only
## be called from a per-userdomain template.
## </p>
## </desc>
## <param name="userdomain_prefix">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
template(`xchat_read_user_home_files',`
gen_require(`
type $1_xchat_home_t;
')
allow $2 $1_xchat_home_t:dir list_dir_perms;
allow $2 $1_xchat_home_t:file read_file_perms;
')
########################################
## <summary>
## Write XChat per user homedir
## </summary>
## <desc>
## <p>
## Write XChat per user homedir
## </p>
## <p>
## This is a templated interface, and should only
## be called from a per-userdomain template.
## </p>
## </desc>
## <param name="userdomain_prefix">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
template(`xchat_write_user_home_files',`
gen_require(`
type $1_xchat_home_t;
')
allow $2 $1_xchat_home_t:dir list_dir_perms;
allow $2 $1_xchat_home_t:file write;
')
########################################
## <summary>
## Run XChat in user XChat domain.
## </summary>
## <desc>
## <p>
## Run XChat in user XChat domain.
## </p>
## <p>
## This is a templated interface, and should only
## be called from a per-userdomain template.
## </p>
## </desc>
## <param name="userdomain_prefix">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
template(`xchat_domtrans_user_xchat',`
gen_require(`
type $1_xchat_t, xchat_exec_t;
')
domtrans_pattern($2, xchat_exec_t,$1_xchat_t)
')
########################################
## <summary>
## Read/write XChat per user tcp_socket
## </summary>
## <desc>
## <p>
## Read/write XChat per user tcp_socket
## </p>
## <p>
## This is a templated interface, and should only
## be called from a per-userdomain template.
## </p>
## </desc>
## <param name="userdomain_prefix">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
template(`xchat_rw_user_tcp_sockets',`
gen_require(`
type $1_xchat_t;
')
allow $2 $1_xchat_t:tcp_socket rw_socket_perms;
')