382 lines
11 KiB
Plaintext
382 lines
11 KiB
Plaintext
## <summary>Policy for GNU Privacy Guard and related programs.</summary>
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#######################################
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## <summary>
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## The per user domain template for the gpg module.
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## </summary>
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## <desc>
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## <p>
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## This template creates the types and rules for GPG,
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## GPG-agent, and GPG helper programs. This protects
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## the user keys and secrets, and runs the programs
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## in domains specific to the user type.
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## </p>
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## <p>
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## This is invoked automatically for each user and
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## generally does not need to be invoked directly
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## by policy writers.
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## </p>
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## </desc>
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## <param name="userdomain_prefix">
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## The prefix of the user domain (e.g., user
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## is the prefix for user_t).
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## </param>
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## <param name="userdomain_prefix">
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## The prefix of the user domain (e.g., user
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## is the prefix for user_t).
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## </param>
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## <param name="domain">
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## The type of the process performing this action.
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## </param>
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#
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template(`gpg_per_userdomain_template',`
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########################################
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#
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# Declarations
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#
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type $1_gpg_t;
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domain_type($1_gpg_t)
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domain_entry_file($1_gpg_t,gpg_exec_t)
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role $3 types $1_gpg_t;
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type $1_gpg_agent_t;
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domain_type($1_gpg_agent_t)
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domain_entry_file($1_gpg_agent_t,gpg_agent_exec_t)
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role $3 types $1_gpg_agent_t;
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type $1_gpg_agent_tmp_t;
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files_tmp_file($1_gpg_agent_tmp_t)
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type $1_gpg_secret_t; #, $1_file_type;
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files_type($1_gpg_secret_t)
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type $1_gpg_helper_t;
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domain_type($1_gpg_helper_t)
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role $3 types $1_gpg_helper_t;
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type $1_gpg_pinentry_t;
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domain_type($1_gpg_pinentry_t)
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role $3 types $1_gpg_pinentry_t;
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########################################
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#
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# GPG local policy
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#
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# transition from the userdomain to the derived domain
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domain_auto_trans($2,gpg_exec_t,$1_gpg_t)
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allow $2 $1_gpg_t:fd use;
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allow $1_gpg_t $2:fd use;
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allow $1_gpg_t $2:fifo_file rw_file_perms;
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allow $1_gpg_t $2:process sigchld;
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allow $1_gpg_t self:capability { ipc_lock setuid };
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allow { $2 $1_gpg_t } $1_gpg_t:process signal;
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# setrlimit is for ulimit -c 0
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allow $1_gpg_t self:process { setrlimit setcap };
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allow $1_gpg_t self:fifo_file rw_file_perms;
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allow $1_gpg_t self:tcp_socket create_stream_socket_perms;
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allow $1_gpg_t $1_gpg_secret_t:dir rw_dir_perms;
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allow $1_gpg_t $1_gpg_secret_t:file create_file_perms;
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allow $1_gpg_t $1_gpg_secret_t:lnk_file create_lnk_perms;
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allow $2 $1_gpg_secret_t:file getattr;
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allow $2 $1_gpg_secret_t:dir rw_dir_perms;
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corenet_tcp_sendrecv_all_if($1_gpg_t)
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corenet_raw_sendrecv_all_if($1_gpg_t)
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corenet_udp_sendrecv_all_if($1_gpg_t)
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corenet_tcp_sendrecv_all_nodes($1_gpg_t)
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corenet_raw_sendrecv_all_nodes($1_gpg_t)
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corenet_udp_sendrecv_all_nodes($1_gpg_t)
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corenet_tcp_sendrecv_all_ports($1_gpg_t)
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corenet_udp_sendrecv_all_ports($1_gpg_t)
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corenet_tcp_bind_all_nodes($1_gpg_t)
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corenet_udp_bind_all_nodes($1_gpg_t)
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dev_read_rand($1_gpg_t)
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dev_read_urand($1_gpg_t)
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fs_getattr_xattr_fs($1_gpg_t)
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domain_use_wide_inherit_fd($1_gpg_t)
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files_read_etc_files($1_gpg_t)
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files_read_usr_files($1_gpg_t)
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files_dontaudit_search_var($1_gpg_t)
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# should not need read access...
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files_list_home($1_gpg_t)
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libs_use_shared_libs($1_gpg_t)
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libs_use_ld_so($1_gpg_t)
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miscfiles_read_localization($1_gpg_t)
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logging_send_syslog_msg($1_gpg_t)
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sysnet_read_config($1_gpg_t)
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userdom_use_user_terminals($1,$1_gpg_t)
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# Legacy
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tunable_policy(`allow_gpg_execstack',`
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allow $1_gpg_t self:process execmem;
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libs_legacy_use_shared_libs($1_gpg_t)
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libs_legacy_use_ld_so($1_gpg_t)
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miscfiles_legacy_read_localization($1_gpg_t)
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# Not quite sure why this is needed...
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allow $1_gpg_t gpg_exec_t:file execmod;
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')
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tunable_policy(`use_nfs_home_dirs',`
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fs_manage_nfs_dirs($1_gpg_t)
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fs_manage_nfs_files($1_gpg_t)
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fs_manage_nfs_symlinks($1_gpg_t)
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')
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tunable_policy(`use_samba_home_dirs',`
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fs_manage_cifs_dirs($1_gpg_t)
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fs_manage_cifs_files($1_gpg_t)
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fs_manage_cifs_symlinks($1_gpg_t)
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')
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optional_policy(`nis.te',`
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nis_use_ypbind($1_gpg_t)
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')
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ifdef(`TODO',`
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ifdef(`gnome-pty-helper.te', `allow $1_gpg_t $1_gph_t:fd use;')
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# allow ps to show gpg
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can_ps($1_t, $1_gpg_t)
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# use $1_gpg_secret_t for files it creates
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# NB we are doing the type transition for directory creation only!
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# so ~/.gnupg will be of $1_gpg_secret_t, then files created under it such as
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# secring.gpg will be of $1_gpg_secret_t too. But when you use gpg to decrypt
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# a file and write output to your home directory it will use user_home_t.
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file_type_auto_trans($1_gpg_t, $1_home_dir_t, $1_gpg_secret_t, dir)
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file_type_auto_trans($1_gpg_t, $1_home_dir_t, $1_home_t, file)
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create_dir_file($1_gpg_t, $1_home_t)
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# allow the usual access to /tmp
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file_type_auto_trans($1_gpg_t, tmp_t, $1_tmp_t)
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rw_dir_create_file($1_gpg_t, $1_file_type)
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') dnl end TODO
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########################################
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#
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# GPG helper local policy
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#
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# for helper programs (which automatically fetch keys)
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# Note: this is only tested with the hkp interface. If you use eg the
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# mail interface you will likely need additional permissions.
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# communicate with the user
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allow $1_gpg_helper_t $2:fd use;
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allow $1_gpg_helper_t $2:fifo_file write;
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# transition from the gpg domain to the helper domain
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domain_auto_trans($1_gpg_t,gpg_helper_exec_t,$1_gpg_helper_t)
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allow $1_gpg_t $1_gpg_helper_t:fd use;
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allow $1_gpg_helper_t $1_gpg_t:fd use;
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allow $1_gpg_helper_t $1_gpg_t:fifo_file rw_file_perms;
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allow $1_gpg_helper_t $1_gpg_t:process sigchld;
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allow $1_gpg_helper_t self:unix_stream_socket create_stream_socket_perms;
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allow $1_gpg_helper_t self:tcp_socket { connect connected_socket_perms };
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allow $1_gpg_helper_t self:udp_socket { connect connected_socket_perms };
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dontaudit $1_gpg_helper_t $1_gpg_secret_t:file read;
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corenet_tcp_sendrecv_all_if($1_gpg_helper_t)
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corenet_raw_sendrecv_all_if($1_gpg_helper_t)
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corenet_udp_sendrecv_all_if($1_gpg_helper_t)
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corenet_tcp_sendrecv_all_nodes($1_gpg_helper_t)
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corenet_udp_sendrecv_all_nodes($1_gpg_helper_t)
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corenet_raw_sendrecv_all_nodes($1_gpg_helper_t)
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corenet_tcp_sendrecv_all_ports($1_gpg_helper_t)
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corenet_udp_sendrecv_all_ports($1_gpg_helper_t)
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corenet_tcp_bind_all_nodes($1_gpg_helper_t)
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corenet_udp_bind_all_nodes($1_gpg_helper_t)
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dev_read_urand($1_gpg_helper_t)
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files_read_etc_files($1_gpg_helper_t)
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# for nscd
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files_dontaudit_search_var($1_gpg_helper_t)
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libs_use_ld_so($1_gpg_helper_t)
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libs_use_shared_libs($1_gpg_helper_t)
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sysnet_read_config($1_gpg_helper_t)
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tunable_policy(`use_nfs_home_dirs',`
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fs_dontaudit_rw_nfs_files($1_gpg_helper_t)
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')
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tunable_policy(`use_samba_home_dirs',`
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fs_dontaudit_rw_cifs_files($1_gpg_helper_t)
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')
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ifdef(`TODO',`
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ifdef(`xdm.te', `
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dontaudit $1_gpg_t xdm_t:fd use;
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dontaudit $1_gpg_t xdm_t:fifo_file read;
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')
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') dnl end TODO
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########################################
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#
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# GPG agent local policy
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#
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# rlimit: gpg-agent wants to prevent coredumps
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allow $1_gpg_agent_t self:process setrlimit;
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allow $1_gpg_agent_t self:unix_stream_socket create_stream_socket_perms ;
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allow $1_gpg_agent_t self:fifo_file rw_file_perms;
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# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )
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allow $1_gpg_agent_t $1_gpg_secret_t:dir create_dir_perms;
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allow $1_gpg_agent_t $1_gpg_secret_t:file create_file_perms;
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allow $1_gpg_agent_t $1_gpg_secret_t:lnk_file create_lnk_perms;
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# allow gpg to connect to the gpg agent
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allow $1_gpg_t $1_gpg_agent_tmp_t:dir search;
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allow $1_gpg_t $1_gpg_agent_tmp_t:sock_file write;
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allow $1_gpg_t $1_gpg_agent_t:unix_stream_socket connectto;
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# Allow the user shell to signal the gpg-agent program.
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allow $2 $1_gpg_agent_t:process { signal sigkill };
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allow $2 $1_gpg_agent_tmp_t:dir create_dir_perms;
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allow $2 $1_gpg_agent_tmp_t:file create_file_perms;
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allow $2 $1_gpg_agent_tmp_t:sock_file create_file_perms;
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files_create_tmp_files($1_gpg_agent_t, $1_gpg_agent_tmp_t, { file sock_file dir })
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corecmd_search_bin($1_gpg_agent_t)
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# Transition from the user domain to the derived domain.
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domain_auto_trans($2, gpg_agent_exec_t, $1_gpg_agent_t)
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domain_use_wide_inherit_fd($1_gpg_agent_t)
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libs_use_ld_so($1_gpg_agent_t)
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libs_use_shared_libs($1_gpg_agent_t)
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miscfiles_read_localization($1_gpg_agent_t)
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# Write to the user domain tty.
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userdom_use_user_terminals($1,$1_gpg_agent_t)
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tunable_policy(`use_nfs_home_dirs',`
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fs_manage_nfs_dirs($1_gpg_agent_t)
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fs_manage_nfs_files($1_gpg_agent_t)
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fs_manage_nfs_symlinks($1_gpg_agent_t)
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')
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tunable_policy(`use_samba_home_dirs',`
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fs_manage_cifs_dirs($1_gpg_agent_t)
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fs_manage_cifs_files($1_gpg_agent_t)
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fs_manage_cifs_symlinks($1_gpg_agent_t)
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')
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ifdef(`TODO',`
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allow $1_gpg_agent_t xdm_t:fd use;
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# allow ps to show gpg-agent
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can_ps($1_t, $1_gpg_agent_t)
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allow $1_gpg_agent_t proc_t:dir search;
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allow $1_gpg_agent_t proc_t:lnk_file read;
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# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )
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allow $1_gpg_agent_t { home_root_t $1_home_dir_t }:dir search;
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') dnl endif TODO
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##############################
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#
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# Pinentry local policy
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#
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# we need to allow gpg-agent to call pinentry so it can get the passphrase
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# from the user.
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domain_auto_trans($1_gpg_agent_t,pinentry_exec_t,$1_gpg_pinentry_t)
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allow $1_gpg_pinentry_t $1_gpg_agent_t:fd use;
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allow $1_gpg_agent_t $1_gpg_pinentry_t:fd use;
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allow $1_gpg_agent_t $1_gpg_pinentry_t:fifo_file rw_file_perms;
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allow $1_gpg_agent_t $1_gpg_pinentry_t:process sigchld;
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allow $1_gpg_pinentry_t self:unix_stream_socket { connect create getattr read shutdown write };
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allow $1_gpg_pinentry_t self:fifo_file rw_file_perms;
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# read /proc/meminfo
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kernel_read_system_state($1_gpg_pinentry_t)
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files_read_usr_files($1_gpg_pinentry_t)
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# read /etc/X11/qtrc
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files_read_etc_files($1_gpg_pinentry_t)
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libs_use_ld_so($1_gpg_pinentry_t)
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libs_use_shared_libs($1_gpg_pinentry_t)
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miscfiles_read_fonts($1_gpg_pinentry_t)
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miscfiles_read_localization($1_gpg_pinentry_t)
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tunable_policy(`use_nfs_home_dirs',`
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fs_read_nfs_files($1_gpg_pinentry_t)
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')
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tunable_policy(`use_samba_home_dirs',`
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fs_read_cifs_files($1_gpg_pinentry_t)
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')
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ifdef(`TODO',`
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ifdef(`xdm.te', `
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allow $1_gpg_pinentry_t xdm_xserver_tmp_t:dir search;
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allow $1_gpg_pinentry_t xdm_xserver_tmp_t:sock_file { read write };
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allow $1_gpg_pinentry_t xdm_xserver_t:unix_stream_socket connectto;
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allow $1_gpg_pinentry_t xdm_t:fd use;
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')
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allow $1_gpg_pinentry_t { tmp_t home_root_t }:dir { getattr search };
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# for .Xauthority
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allow $1_gpg_pinentry_t $1_home_dir_t:dir { getattr search };
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allow $1_gpg_pinentry_t $1_home_t:file r_file_perms;
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# wants to put some lock files into the user home dir, seems to work fine without
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dontaudit $1_gpg_pinentry_t $1_home_t:dir { read write };
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dontaudit $1_gpg_pinentry_t $1_home_t:file write;
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tunable_policy(`use_nfs_home_dirs',`
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dontaudit $1_gpg_pinentry_t nfs_t:dir write;
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dontaudit $1_gpg_pinentry_t nfs_t:file write;
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')
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tunable_policy(`use_samba_home_dirs',`
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dontaudit $1_gpg_pinentry_t cifs_t:dir write;
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dontaudit $1_gpg_pinentry_t cifs_t:file write;
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')
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dontaudit $1_gpg_pinentry_t { sysctl_t sysctl_kernel_t }:dir { getattr search };
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') dnl end TODO
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')
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