# Copyright (C) 2005 Tresys Technology, LLC

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

#

# Per user domain template for this module

#

# gpg_per_userdomain_template(userdomain_prefix)

#

define(`gpg_per_userdomain_template',`

requires_block_template(`$0'_depend)

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

#

# Declarations

#

type $1_gpg_t;

domain_make_domain($1_gpg_t)

domain_make_entrypoint_file($1_gpg_t,gpg_exec_t)

role $1_r types $1_gpg_t;

type $1_gpg_agent_t;

domain_make_domain($1_gpg_agent_t)

domain_make_entrypoint_file($1_gpg_agent_t,gpg_agent_exec_t)

role $1_r types $1_gpg_agent_t;

type $1_gpg_agent_tmp_t;

files_make_temporary_file($1_gpg_agent_tmp_t)

type $1_gpg_secret_t; #, $1_file_type;

files_make_file($1_gpg_secret_t)

type $1_gpg_helper_t;

domain_make_domain($1_gpg_helper_t)

role $1_r types $1_gpg_helper_t;

type $1_gpg_pinentry_t;

domain_make_domain($1_gpg_pinentry_t)

role $1_r types $1_gpg_pinentry_t;

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

#

# GPG local policy

#

# transition from the userdomain to the derived domain

allow $1_t $1_gpg_t:process transition;

allow $1_t gpg_exec_t:file { getattr read execute };

type_transition $1_t gpg_exec_t:process $1_gpg_t;

allow $1_gpg_t self:capability { ipc_lock setuid };

allow { $1_t $1_gpg_t } $1_gpg_t:process signal;

# setrlimit is for ulimit -c 0

allow $1_gpg_t self:process { setrlimit setcap };

allow $1_gpg_t self:fifo_file { getattr read write };

allow $1_gpg_t self:tcp_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };

allow $1_gpg_t $1_gpg_secret_t:dir { read getattr lock search ioctl add_name remove_name write };

allow $1_gpg_t $1_gpg_secret_t:file { create ioctl read getattr lock write setattr append link unlink rename };

allow $1_gpg_t $1_gpg_secret_t:lnk_file { create read getattr setattr link unlink rename };

corenetwork_network_tcp_on_all_interfaces($1_gpg_t)

corenetwork_network_raw_on_all_interfaces($1_gpg_t)

corenetwork_network_udp_on_all_interfaces($1_gpg_t)

corenetwork_network_tcp_on_all_nodes($1_gpg_t)

corenetwork_network_raw_on_all_nodes($1_gpg_t)

corenetwork_network_udp_on_all_nodes($1_gpg_t)

corenetwork_network_tcp_on_all_ports($1_gpg_t)

corenetwork_network_udp_on_all_ports($1_gpg_t)

corenetwork_bind_tcp_on_all_nodes($1_gpg_t)

corenetwork_bind_udp_on_all_nodes($1_gpg_t)

devices_get_random_data($1_gpg_t)

devices_get_pseudorandom_data($1_gpg_t)

filesystem_get_persistent_filesystem_attributes($1_gpg_t)

files_read_general_system_config($1_gpg_t)

files_read_general_application_resources($1_gpg_t)

libraries_use_shared_libraries($1_gpg_t)

libraries_use_dynamic_loader($1_gpg_t)

miscfiles_read_localization($1_gpg_t)

logging_send_system_log_message($1_gpg_t)

sysnetwork_read_network_config($1_gpg_t)

# Legacy

if (allow_gpg_execstack) {

allow $1_gpg_t self:process execmem;

libraries_legacy_use_shared_libraries($1_gpg_t)

libraries_legacy_use_dynamic_loader($1_gpg_t)

miscfiles_legacy_read_localization($1_gpg_t)

# Not quite sure why this is needed... 

allow $1_gpg_t gpg_exec_t:file execmod;

}

ifdef(`TODO',`

can_ypbind($1_gpg_t)

allow $1_t $1_gpg_secret_t:file getattr;

access_terminal($1_gpg_t, $1)

ifdef(`gnome-pty-helper.te', `allow $1_gpg_t $1_gph_t:fd use;')

# Inherit and use descriptors

allow $1_gpg_t { privfd $1_t }:fd use;

# allow ps to show gpg

can_ps($1_t, $1_gpg_t)

# should not need read access...

allow $1_gpg_t home_root_t:dir { read search };

# use $1_gpg_secret_t for files it creates

# NB we are doing the type transition for directory creation only!

# so ~/.gnupg will be of $1_gpg_secret_t, then files created under it such as

# secring.gpg will be of $1_gpg_secret_t too.  But when you use gpg to decrypt

# a file and write output to your home directory it will use user_home_t.

file_type_auto_trans($1_gpg_t, $1_home_dir_t, $1_gpg_secret_t, dir)

file_type_auto_trans($1_gpg_t, $1_home_dir_t, $1_home_t, file)

create_dir_file($1_gpg_t, $1_home_t)

# allow the usual access to /tmp

file_type_auto_trans($1_gpg_t, tmp_t, $1_tmp_t)

if (use_nfs_home_dirs) {

create_dir_file($1_gpg_t, nfs_t)

}

if (use_samba_home_dirs) {

create_dir_file($1_gpg_t, cifs_t)

}

rw_dir_create_file($1_gpg_t, $1_file_type)

allow $1_t $1_gpg_secret_t:dir rw_dir_perms;

dontaudit $1_gpg_t var_t:dir search;

') dnl end TODO

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

#

# GPG helper local policy

#

# for helper programs (which automatically fetch keys)

# Note: this is only tested with the hkp interface. If you use eg the 

# mail interface you will likely need additional permissions.

# transition from the gpg domain to the helper domain

allow $1_gpg_t $1_gpg_helper_t:process transition;

allow $1_gpg_t gpg_helper_exec_t:file { getattr read execute };

type_transition $1_gpg_t gpg_helper_exec_t:process $1_gpg_helper_t;

allow $1_gpg_helper_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };

allow $1_gpg_helper_t self:tcp_socket { create connect ioctl read getattr write setattr append bind getopt setopt shutdown };

allow $1_gpg_helper_t self:udp_socket { create connect ioctl read getattr write setattr append bind getopt setopt shutdown };

dontaudit $1_gpg_helper_t $1_gpg_secret_t:file read;

corenetwork_network_tcp_on_all_interfaces($1_gpg_helper_t)

corenetwork_network_raw_on_all_interfaces($1_gpg_helper_t)

corenetwork_network_udp_on_all_interfaces($1_gpg_helper_t)

corenetwork_network_tcp_on_all_nodes($1_gpg_helper_t)

corenetwork_network_udp_on_all_nodes($1_gpg_helper_t)

corenetwork_network_raw_on_all_nodes($1_gpg_helper_t)

corenetwork_network_tcp_on_all_ports($1_gpg_helper_t)

corenetwork_network_udp_on_all_ports($1_gpg_helper_t)

corenetwork_bind_tcp_on_all_nodes($1_gpg_helper_t)

corenetwork_bind_udp_on_all_nodes($1_gpg_helper_t)

devices_get_pseudorandom_data($1_gpg_helper_t)

files_read_general_system_config($1_gpg_helper_t)

# for nscd

files_ignore_search_system_state_data_directory($1_gpg_helper_t)

libraries_use_dynamic_loader($1_gpg_helper_t)

libraries_use_shared_libraries($1_gpg_helper_t)

sysnetwork_read_network_config($1_gpg_helper_t)

ifdef(`TODO',`

if (use_nfs_home_dirs) {

dontaudit $1_gpg_helper_t nfs_t:file { read write };

}

if (use_samba_home_dirs) {

dontaudit $1_gpg_helper_t cifs_t:file { read write };

}

# communicate with the user 

allow $1_gpg_helper_t $1_t:fd use;

allow $1_gpg_helper_t $1_t:fifo_file write;

ifdef(`xdm.te', `

dontaudit $1_gpg_t xdm_t:fd use;

dontaudit $1_gpg_t xdm_t:fifo_file read;

')

') dnl end TODO

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

#

# GPG agent local policy

#

# rlimit: gpg-agent wants to prevent coredumps

allow $1_gpg_agent_t self:process setrlimit;

allow $1_gpg_agent_t self:unix_stream_socket { create ioctl read getattr write setattr append bind connect getopt setopt shutdown listen accept };

allow $1_gpg_agent_t self:fifo_file { getattr read write };

allow $1_t $1_gpg_agent_tmp_t:dir { create read getattr lock setattr ioctl link unlink rename search add_name remove_name reparent write rmdir };

allow $1_t $1_gpg_agent_tmp_t:file { create ioctl read getattr lock write setattr append link unlink rename };

allow $1_t $1_gpg_agent_tmp_t:sock_file { create ioctl read getattr lock write setattr append link unlink rename };

files_create_private_tmp_data($1_gpg_agent_t, $1_gpg_agent_tmp_t, { file sock_file dir })

domain_use_widely_inheritable_file_descriptors($1_gpg_agent_t)

libraries_use_dynamic_loader($1_gpg_agent_t)

libraries_use_shared_libraries($1_gpg_agent_t)

miscfiles_read_localization($1_gpg_agent_t)

ifdef(`TODO',`

# Transition from the user domain to the derived domain.

domain_auto_trans($1_t, gpg_agent_exec_t, $1_gpg_agent_t)

allow $1_gpg_agent_t xdm_t:fd use;

# Write to the user domain tty.

access_terminal($1_gpg_agent_t, $1)

# Allow the user shell to signal the gpg-agent program.

allow $1_t $1_gpg_agent_t:process { signal sigkill };

# allow ps to show gpg-agent

can_ps($1_t, $1_gpg_agent_t)

allow $1_gpg_agent_t proc_t:dir search;

allow $1_gpg_agent_t proc_t:lnk_file read;

allow $1_gpg_agent_t device_t:dir { getattr read };

# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )

allow $1_gpg_agent_t { home_root_t $1_home_dir_t }:dir search;

create_dir_file($1_gpg_agent_t, $1_gpg_secret_t)

if (use_nfs_home_dirs) {

create_dir_file($1_gpg_agent_t, nfs_t)

}

if (use_samba_home_dirs) {

create_dir_file($1_gpg_agent_t, cifs_t)

}

# gpg connect

allow $1_gpg_t $1_gpg_agent_tmp_t:dir search;

allow $1_gpg_t $1_gpg_agent_tmp_t:sock_file write;

can_unix_connect($1_gpg_t, $1_gpg_agent_t)

') dnl endif TODO

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

#

# Pinentry local policy

#

# we need to allow gpg-agent to call pinentry so it can get the passphrase 

# from the user.

allow $1_gpg_agent_t $1_gpg_pinentry_t:process transition;

allow $1_gpg_agent_t pinentry_exec_t:file { getattr read execute };

type_transition $1_gpg_agent_t pinentry_exec_t:process $1_gpg_pinentry_t;

allow $1_gpg_pinentry_t self:unix_stream_socket { connect create getattr read shutdown write };

allow $1_gpg_pinentry_t self:fifo_file { getattr read write };

# read /proc/meminfo

kernel_read_system_state($1_gpg_pinentry_t)

files_read_general_application_resources($1_gpg_pinentry_t)

# read /etc/X11/qtrc

files_read_general_system_config($1_gpg_pinentry_t)

libraries_use_dynamic_loader($1_gpg_pinentry_t)

libraries_use_shared_libraries($1_gpg_pinentry_t)

miscfiles_read_fonts($1_gpg_pinentry_t)

miscfiles_read_localization($1_gpg_pinentry_t)

ifdef(`TODO',`

allow $1_gpg_agent_t bin_t:dir search;

ifdef(`xdm.te', `

allow $1_gpg_pinentry_t xdm_xserver_tmp_t:dir search;

allow $1_gpg_pinentry_t xdm_xserver_tmp_t:sock_file { read write };

can_unix_connect($1_gpg_pinentry_t, xdm_xserver_t)

allow $1_gpg_pinentry_t xdm_t:fd use;

')dnl end ig xdm.te

allow $1_gpg_pinentry_t { tmp_t home_root_t }:dir { getattr search };

# for .Xauthority

allow $1_gpg_pinentry_t $1_home_dir_t:dir { getattr search };

allow $1_gpg_pinentry_t $1_home_t:file { getattr read };

# wants to put some lock files into the user home dir, seems to work fine without

dontaudit $1_gpg_pinentry_t $1_home_t:dir { read write };

dontaudit $1_gpg_pinentry_t $1_home_t:file write;

if (use_nfs_home_dirs) {

allow $1_gpg_pinentry_t nfs_t:dir { getattr search };

allow $1_gpg_pinentry_t nfs_t:file { getattr read };

dontaudit $1_gpg_pinentry_t nfs_t:dir { read write };

dontaudit $1_gpg_pinentry_t nfs_t:file write;

}

if (use_samba_home_dirs) {

allow $1_gpg_pinentry_t cifs_t:dir { getattr search };

allow $1_gpg_pinentry_t cifs_t:file { getattr read };

dontaudit $1_gpg_pinentry_t cifs_t:dir { read write };

dontaudit $1_gpg_pinentry_t cifs_t:file write;

}

dontaudit $1_gpg_pinentry_t { sysctl_t sysctl_kernel_t }:dir { getattr search };

') dnl end TODO

') dnl end gpg_per_userdomain_template