## <summary>Policy for GNU Privacy Guard and related programs.</summary>
#######################################
## <summary>
## The per user domain template for the gpg module.
## </summary>
## <desc>
## <p>
## This template creates the types and rules for GPG,
## GPG-agent, and GPG helper programs. This protects
## the user keys and secrets, and runs the programs
## in domains specific to the user type.
## </p>
## <p>
## This 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>
#
template(`gpg_per_userdomain_template',`
gen_require(`$0'_depend)
########################################
#
# Declarations
#
type $1_gpg_t;
domain_type($1_gpg_t)
domain_entry_file($1_gpg_t,gpg_exec_t)
role $1_r types $1_gpg_t;
type $1_gpg_agent_t;
domain_type($1_gpg_agent_t)
domain_entry_file($1_gpg_agent_t,gpg_agent_exec_t)
role $1_r types $1_gpg_agent_t;
type $1_gpg_agent_tmp_t;
files_tmp_file($1_gpg_agent_tmp_t)
type $1_gpg_secret_t; #, $1_file_type;
files_file_type($1_gpg_secret_t)
type $1_gpg_helper_t;
domain_type($1_gpg_helper_t)
role $1_r types $1_gpg_helper_t;
type $1_gpg_pinentry_t;
domain_type($1_gpg_pinentry_t)
role $1_r types $1_gpg_pinentry_t;
########################################
#
# GPG local policy
#
# transition from the userdomain to the derived domain
domain_auto_trans($1_t,gpg_exec_t,$1_gpg_t)
allow $1_t $1_gpg_t:fd use;
allow $1_gpg_t $1_t:fd use;
allow $1_gpg_t $1_t:fifo_file rw_file_perms;
allow $1_gpg_t $1_t:process sigchld;
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 rw_file_perms;
allow $1_gpg_t self:tcp_socket create_stream_socket_perms;
allow $1_gpg_t $1_gpg_secret_t:dir rw_dir_perms;
allow $1_gpg_t $1_gpg_secret_t:file create_file_perms;
allow $1_gpg_t $1_gpg_secret_t:lnk_file create_lnk_perms;
corenet_tcp_sendrecv_all_if($1_gpg_t)
corenet_raw_sendrecv_all_if($1_gpg_t)
corenet_udp_sendrecv_all_if($1_gpg_t)
corenet_tcp_sendrecv_all_nodes($1_gpg_t)
corenet_raw_sendrecv_all_nodes($1_gpg_t)
corenet_udp_sendrecv_all_nodes($1_gpg_t)
corenet_tcp_sendrecv_all_ports($1_gpg_t)
corenet_udp_sendrecv_all_ports($1_gpg_t)
corenet_tcp_bind_all_nodes($1_gpg_t)
corenet_udp_bind_all_nodes($1_gpg_t)
dev_read_rand($1_gpg_t)
dev_read_urand($1_gpg_t)
fs_getattr_xattr_fs($1_gpg_t)
files_read_generic_etc_files($1_gpg_t)
files_read_usr_files($1_gpg_t)
libs_use_shared_libs($1_gpg_t)
libs_use_ld_so($1_gpg_t)
miscfiles_read_localization($1_gpg_t)
logging_send_syslog_msg($1_gpg_t)
sysnet_read_config($1_gpg_t)
# Legacy
tunable_policy(`allow_gpg_execstack',`
allow $1_gpg_t self:process execmem;
libs_legacy_use_shared_libs($1_gpg_t)
libs_legacy_use_ld_so($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;
')
tunable_policy(`use_nfs_home_dirs',`
fs_manage_nfs_dirs($1_gpg_t)
fs_manage_nfs_files($1_gpg_t)
fs_manage_nfs_symlinks($1_gpg_t)
')
tunable_policy(`use_samba_home_dirs',`
fs_manage_cifs_dirs($1_gpg_t)
fs_manage_cifs_files($1_gpg_t)
fs_manage_cifs_symlinks($1_gpg_t)
')
optional_policy(`nis.te',`
nis_use_ypbind($1_gpg_t)
')
ifdef(`TODO',`
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)
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.
# communicate with the user
allow $1_gpg_helper_t $1_t:fd use;
allow $1_gpg_helper_t $1_t:fifo_file write;
# transition from the gpg domain to the helper domain
domain_auto_trans($1_gpg_t,gpg_helper_exec_t,$1_gpg_helper_t)
allow $1_gpg_t $1_gpg_helper_t:fd use;
allow $1_gpg_helper_t $1_gpg_t:fd use;
allow $1_gpg_helper_t $1_gpg_t:fifo_file rw_file_perms;
allow $1_gpg_helper_t $1_gpg_t:process sigchld;
allow $1_gpg_helper_t self:unix_stream_socket create_stream_socket_perms;
allow $1_gpg_helper_t self:tcp_socket { connect connected_socket_perms };
allow $1_gpg_helper_t self:udp_socket { connect connected_socket_perms };
dontaudit $1_gpg_helper_t $1_gpg_secret_t:file read;
corenet_tcp_sendrecv_all_if($1_gpg_helper_t)
corenet_raw_sendrecv_all_if($1_gpg_helper_t)
corenet_udp_sendrecv_all_if($1_gpg_helper_t)
corenet_tcp_sendrecv_all_nodes($1_gpg_helper_t)
corenet_udp_sendrecv_all_nodes($1_gpg_helper_t)
corenet_raw_sendrecv_all_nodes($1_gpg_helper_t)
corenet_tcp_sendrecv_all_ports($1_gpg_helper_t)
corenet_udp_sendrecv_all_ports($1_gpg_helper_t)
corenet_tcp_bind_all_nodes($1_gpg_helper_t)
corenet_udp_bind_all_nodes($1_gpg_helper_t)
dev_read_urand($1_gpg_helper_t)
files_read_generic_etc_files($1_gpg_helper_t)
# for nscd
files_dontaudit_search_var($1_gpg_helper_t)
libs_use_ld_so($1_gpg_helper_t)
libs_use_shared_libs($1_gpg_helper_t)
sysnet_read_config($1_gpg_helper_t)
tunable_policy(`use_nfs_home_dirs',`
fs_dontaudit_rw_nfs_files($1_gpg_helper_t)
')
tunable_policy(`use_samba_home_dirs',`
fs_dontaudit_rw_cifs_files($1_gpg_helper_t)
')
ifdef(`TODO',`
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_stream_socket_perms ;
allow $1_gpg_agent_t self:fifo_file rw_file_perms;
allow $1_t $1_gpg_agent_tmp_t:dir create_dir_perms;
allow $1_t $1_gpg_agent_tmp_t:file create_file_perms;
allow $1_t $1_gpg_agent_tmp_t:sock_file create_file_perms;
files_create_tmp_files($1_gpg_agent_t, $1_gpg_agent_tmp_t, { file sock_file dir })
# Transition from the user domain to the derived domain.
domain_auto_trans($1_t, gpg_agent_exec_t, $1_gpg_agent_t)
domain_use_wide_inherit_fd($1_gpg_agent_t)
libs_use_ld_so($1_gpg_agent_t)
libs_use_shared_libs($1_gpg_agent_t)
miscfiles_read_localization($1_gpg_agent_t)
tunable_policy(`use_nfs_home_dirs',`
fs_manage_nfs_dirs($1_gpg_agent_t)
fs_manage_nfs_files($1_gpg_agent_t)
fs_manage_nfs_symlinks($1_gpg_agent_t)
')
tunable_policy(`use_samba_home_dirs',`
fs_manage_cifs_dirs($1_gpg_agent_t)
fs_manage_cifs_files($1_gpg_agent_t)
fs_manage_cifs_symlinks($1_gpg_agent_t)
')
ifdef(`TODO',`
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 r_file_perms;
# 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)
# 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.
domain_auto_trans($1_gpg_agent_t,pinentry_exec_t,$1_gpg_pinentry_t)
allow $1_gpg_pinentry_t $1_gpg_agent_t:fd use;
allow $1_gpg_agent_t $1_gpg_pinentry_t:fd use;
allow $1_gpg_agent_t $1_gpg_pinentry_t:fifo_file rw_file_perms;
allow $1_gpg_agent_t $1_gpg_pinentry_t:process sigchld;
allow $1_gpg_pinentry_t self:unix_stream_socket { connect create getattr read shutdown write };
allow $1_gpg_pinentry_t self:fifo_file rw_file_perms;
# read /proc/meminfo
kernel_read_system_state($1_gpg_pinentry_t)
files_read_usr_files($1_gpg_pinentry_t)
# read /etc/X11/qtrc
files_read_generic_etc_files($1_gpg_pinentry_t)
libs_use_ld_so($1_gpg_pinentry_t)
libs_use_shared_libs($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;
')
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 r_file_perms;
# 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;
tunable_policy(`use_nfs_home_dirs',`
allow $1_gpg_pinentry_t nfs_t:dir { getattr search };
allow $1_gpg_pinentry_t nfs_t:file r_file_perms;
dontaudit $1_gpg_pinentry_t nfs_t:dir { read write };
dontaudit $1_gpg_pinentry_t nfs_t:file write;
')
tunable_policy(`use_samba_home_dirs',`
allow $1_gpg_pinentry_t cifs_t:dir { getattr search };
allow $1_gpg_pinentry_t cifs_t:file r_file_perms;
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
')