selinux-policy/policy/modules/apps/gpg.if
2008-10-17 17:31:04 +00:00

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## <summary>Policy for GNU Privacy Guard and related programs.</summary>
#######################################
## <summary>
## The per role 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">
## <summary>
## The prefix of the user domain (e.g., user
## is the prefix for user_t).
## </summary>
## </param>
## <param name="userdomain">
## <summary>
## The user domain.
## </summary>
## </param>
## <param name="role">
## <summary>
## The role associated with the user.
## </summary>
## </param>
#
template(`gpg_per_role_template',`
gen_require(`
type gpg_exec_t, gpg_helper_exec_t, gpg_agent_exec_t, pinentry_exec_t;
')
########################################
#
# Declarations
#
type $1_gpg_t;
application_domain($1_gpg_t, gpg_exec_t)
role $3 types $1_gpg_t;
type $1_gpg_agent_t;
application_domain($1_gpg_agent_t, gpg_agent_exec_t)
role $3 types $1_gpg_agent_t;
type $1_gpg_agent_tmp_t;
files_tmp_file($1_gpg_agent_tmp_t)
type $1_gpg_secret_t;
userdom_user_home_content($1, $1_gpg_secret_t)
type $1_gpg_helper_t;
application_domain($1_gpg_helper_t, gpg_helper_exec_t)
role $3 types $1_gpg_helper_t;
type $1_gpg_pinentry_t;
application_domain($1_gpg_pinentry_t, pinentry_exec_t)
role $3 types $1_gpg_pinentry_t;
########################################
#
# GPG local policy
#
allow $1_gpg_t self:capability { ipc_lock setuid };
allow { $2 $1_gpg_t } $1_gpg_t:process signal;
# setrlimit is for ulimit -c 0
allow $1_gpg_t self:process { setrlimit setcap setpgid };
allow $1_gpg_t self:fifo_file rw_fifo_file_perms;
allow $1_gpg_t self:tcp_socket create_stream_socket_perms;
# transition from the gpg domain to the helper domain
domtrans_pattern($1_gpg_t, gpg_helper_exec_t, $1_gpg_helper_t)
manage_files_pattern($1_gpg_t, $1_gpg_secret_t, $1_gpg_secret_t)
manage_lnk_files_pattern($1_gpg_t, $1_gpg_secret_t, $1_gpg_secret_t)
allow $1_gpg_t $1_gpg_secret_t:dir create_dir_perms;
userdom_user_home_dir_filetrans($1, $1_gpg_t, $1_gpg_secret_t, dir)
# transition from the userdomain to the derived domain
domtrans_pattern($2, gpg_exec_t, $1_gpg_t)
# allow ps to show gpg
ps_process_pattern($2, $1_gpg_t)
corenet_all_recvfrom_unlabeled($1_gpg_t)
corenet_all_recvfrom_netlabel($1_gpg_t)
corenet_tcp_sendrecv_all_if($1_gpg_t)
corenet_udp_sendrecv_all_if($1_gpg_t)
corenet_tcp_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_connect_all_ports($1_gpg_t)
corenet_sendrecv_all_client_packets($1_gpg_t)
dev_read_rand($1_gpg_t)
dev_read_urand($1_gpg_t)
fs_getattr_xattr_fs($1_gpg_t)
domain_use_interactive_fds($1_gpg_t)
files_read_etc_files($1_gpg_t)
files_read_usr_files($1_gpg_t)
files_dontaudit_search_var($1_gpg_t)
miscfiles_read_localization($1_gpg_t)
logging_send_syslog_msg($1_gpg_t)
sysnet_read_config($1_gpg_t)
userdom_use_user_terminals($1, $1_gpg_t)
optional_policy(`
nis_use_ypbind($1_gpg_t)
')
ifdef(`TODO',`
# Read content to encrypt/decrypt/sign
read_content($1_gpg_t, $1)
# Write content to encrypt/decrypt/sign
write_trusted($1_gpg_t, $1)
') 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.
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 };
# communicate with the user
allow $1_gpg_helper_t $2:fd use;
allow $1_gpg_helper_t $2:fifo_file write;
dontaudit $1_gpg_helper_t $1_gpg_secret_t:file read;
corenet_all_recvfrom_unlabeled($1_gpg_helper_t)
corenet_all_recvfrom_netlabel($1_gpg_helper_t)
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)
corenet_tcp_connect_all_ports($1_gpg_helper_t)
dev_read_urand($1_gpg_helper_t)
files_read_etc_files($1_gpg_helper_t)
# for nscd
files_dontaudit_search_var($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)
')
optional_policy(`
xserver_use_xdm_fds($1_gpg_t)
xserver_rw_xdm_pipes($1_gpg_t)
')
########################################
#
# 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_fifo_file_perms;
# Allow the gpg-agent to manage its tmp files (socket)
manage_dirs_pattern($1_gpg_agent_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
manage_files_pattern($1_gpg_agent_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
manage_sock_files_pattern($1_gpg_agent_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
files_tmp_filetrans($1_gpg_agent_t, $1_gpg_agent_tmp_t, { file sock_file dir })
# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )
manage_dirs_pattern($1_gpg_agent_t, $1_gpg_secret_t, $1_gpg_secret_t)
manage_files_pattern($1_gpg_agent_t, $1_gpg_secret_t, $1_gpg_secret_t)
manage_lnk_files_pattern($1_gpg_agent_t, $1_gpg_secret_t, $1_gpg_secret_t)
# allow gpg to connect to the gpg agent
stream_connect_pattern($1_gpg_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t, $1_gpg_agent_t)
# allow ps to show gpg-agent
ps_process_pattern($2, $1_gpg_agent_t)
# Allow the user shell to signal the gpg-agent program.
allow $2 $1_gpg_agent_t:process { signal sigkill signull };
# Allow the user to manage gpg-agent tmp files (socket)
manage_dirs_pattern($2, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
manage_files_pattern($2, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
manage_sock_files_pattern($2, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
# Transition from the user domain to the derived domain.
domtrans_pattern($2, gpg_agent_exec_t, $1_gpg_agent_t)
corecmd_search_bin($1_gpg_agent_t)
domain_use_interactive_fds($1_gpg_agent_t)
miscfiles_read_localization($1_gpg_agent_t)
# Write to the user domain tty.
userdom_use_user_terminals($1, $1_gpg_agent_t)
# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )
userdom_search_user_home_dirs($1, $1_gpg_agent_t)
tunable_policy(`gpg_agent_env_file',`
# write ~/.gpg-agent-info or a similar to the users home dir
# or subdir (gpg-agent --write-env-file option)
#
userdom_user_home_dir_filetrans_user_home_content($1, $1_gpg_agent_t, file)
userdom_manage_user_home_content_dirs($1, $1_gpg_agent_t)
userdom_manage_user_home_content_files($1, $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)
')
##############################
#
# Pinentry local policy
#
allow $1_gpg_pinentry_t self:unix_stream_socket { connect create getattr read shutdown write };
allow $1_gpg_pinentry_t self:fifo_file rw_fifo_file_perms;
# we need to allow gpg-agent to call pinentry so it can get the passphrase
# from the user.
domtrans_pattern($1_gpg_agent_t, pinentry_exec_t, $1_gpg_pinentry_t)
# 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_etc_files($1_gpg_pinentry_t)
miscfiles_read_fonts($1_gpg_pinentry_t)
miscfiles_read_localization($1_gpg_pinentry_t)
# for .Xauthority
userdom_read_user_home_content_files($1, $1_gpg_pinentry_t)
tunable_policy(`use_nfs_home_dirs',`
fs_read_nfs_files($1_gpg_pinentry_t)
')
tunable_policy(`use_samba_home_dirs',`
fs_read_cifs_files($1_gpg_pinentry_t)
')
optional_policy(`
xserver_stream_connect_xdm_xserver($1_gpg_pinentry_t)
')
ifdef(`TODO',`
allow $1_gpg_pinentry_t tmp_t:dir { getattr search };
# 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',`
dontaudit $1_gpg_pinentry_t nfs_t:dir write;
dontaudit $1_gpg_pinentry_t nfs_t:file write;
')
tunable_policy(`use_samba_home_dirs',`
dontaudit $1_gpg_pinentry_t cifs_t:dir 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
')
########################################
## <summary>
## Transition to a user gpg domain.
## </summary>
## <desc>
## <p>
## Transition to a user gpg 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(`gpg_domtrans_user_gpg',`
gen_require(`
type $1_gpg_t, gpg_exec_t;
')
domtrans_pattern($2, gpg_exec_t, $1_gpg_t)
')
########################################
## <summary>
## Send generic signals to user gpg processes.
## </summary>
## <desc>
## <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(`gpg_signal_user_gpg',`
gen_require(`
type $1_gpg_t;
')
allow $2 $1_gpg_t:process signal;
')