383 lines
11 KiB
Plaintext
383 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 role 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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## <summary>
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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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## </summary>
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## </param>
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## <param name="userdomain">
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## <summary>
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## The user domain.
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## </summary>
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## </param>
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## <param name="role">
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## <summary>
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## The role associated with the user.
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## </summary>
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## </param>
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#
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template(`gpg_per_role_template',`
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gen_require(`
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type gpg_exec_t, gpg_helper_exec_t, gpg_agent_exec_t, pinentry_exec_t;
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')
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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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application_domain($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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application_domain($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;
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userdom_user_home_content($1, $1_gpg_secret_t)
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type $1_gpg_helper_t;
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application_domain($1_gpg_helper_t, gpg_helper_exec_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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application_domain($1_gpg_pinentry_t, pinentry_exec_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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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 setpgid };
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allow $1_gpg_t self:fifo_file rw_fifo_file_perms;
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allow $1_gpg_t self:tcp_socket create_stream_socket_perms;
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# transition from the gpg domain to the helper domain
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domtrans_pattern($1_gpg_t, gpg_helper_exec_t, $1_gpg_helper_t)
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manage_files_pattern($1_gpg_t, $1_gpg_secret_t, $1_gpg_secret_t)
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manage_lnk_files_pattern($1_gpg_t, $1_gpg_secret_t, $1_gpg_secret_t)
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allow $1_gpg_t $1_gpg_secret_t:dir create_dir_perms;
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userdom_user_home_dir_filetrans($1, $1_gpg_t, $1_gpg_secret_t, dir)
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# transition from the userdomain to the derived domain
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domtrans_pattern($2, gpg_exec_t, $1_gpg_t)
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# allow ps to show gpg
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ps_process_pattern($2, $1_gpg_t)
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corenet_all_recvfrom_unlabeled($1_gpg_t)
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corenet_all_recvfrom_netlabel($1_gpg_t)
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corenet_tcp_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_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_connect_all_ports($1_gpg_t)
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corenet_sendrecv_all_client_packets($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_interactive_fds($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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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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optional_policy(`
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nis_use_ypbind($1_gpg_t)
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')
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ifdef(`TODO',`
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# Read content to encrypt/decrypt/sign
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read_content($1_gpg_t, $1)
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# Write content to encrypt/decrypt/sign
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write_trusted($1_gpg_t, $1)
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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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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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# 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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dontaudit $1_gpg_helper_t $1_gpg_secret_t:file read;
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corenet_all_recvfrom_unlabeled($1_gpg_helper_t)
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corenet_all_recvfrom_netlabel($1_gpg_helper_t)
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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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corenet_tcp_connect_all_ports($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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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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optional_policy(`
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xserver_use_xdm_fds($1_gpg_t)
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xserver_rw_xdm_pipes($1_gpg_t)
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')
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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_fifo_file_perms;
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# Allow the gpg-agent to manage its tmp files (socket)
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manage_dirs_pattern($1_gpg_agent_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
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manage_files_pattern($1_gpg_agent_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
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manage_sock_files_pattern($1_gpg_agent_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
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files_tmp_filetrans($1_gpg_agent_t, $1_gpg_agent_tmp_t, { file sock_file dir })
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# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )
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manage_dirs_pattern($1_gpg_agent_t, $1_gpg_secret_t, $1_gpg_secret_t)
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manage_files_pattern($1_gpg_agent_t, $1_gpg_secret_t, $1_gpg_secret_t)
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manage_lnk_files_pattern($1_gpg_agent_t, $1_gpg_secret_t, $1_gpg_secret_t)
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# allow gpg to connect to the gpg agent
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stream_connect_pattern($1_gpg_t, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t, $1_gpg_agent_t)
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# allow ps to show gpg-agent
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ps_process_pattern($2, $1_gpg_agent_t)
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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 signull };
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# Allow the user to manage gpg-agent tmp files (socket)
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manage_dirs_pattern($2, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
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manage_files_pattern($2, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
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manage_sock_files_pattern($2, $1_gpg_agent_tmp_t, $1_gpg_agent_tmp_t)
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# Transition from the user domain to the derived domain.
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domtrans_pattern($2, gpg_agent_exec_t, $1_gpg_agent_t)
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corecmd_search_bin($1_gpg_agent_t)
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domain_use_interactive_fds($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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# read and write ~/.gnupg (gpg-agent stores secret keys in ~/.gnupg/private-keys-v1.d )
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userdom_search_user_home_dirs($1, $1_gpg_agent_t)
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tunable_policy(`gpg_agent_env_file',`
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# write ~/.gpg-agent-info or a similar to the users home dir
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# or subdir (gpg-agent --write-env-file option)
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#
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userdom_user_home_dir_filetrans_user_home_content($1, $1_gpg_agent_t, file)
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userdom_manage_user_home_content_dirs($1, $1_gpg_agent_t)
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userdom_manage_user_home_content_files($1, $1_gpg_agent_t)
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')
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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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##############################
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#
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# Pinentry local policy
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#
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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_fifo_file_perms;
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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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domtrans_pattern($1_gpg_agent_t, pinentry_exec_t, $1_gpg_pinentry_t)
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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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miscfiles_read_fonts($1_gpg_pinentry_t)
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miscfiles_read_localization($1_gpg_pinentry_t)
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# for .Xauthority
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userdom_read_user_home_content_files($1, $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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optional_policy(`
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xserver_stream_connect_xdm_xserver($1_gpg_pinentry_t)
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')
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ifdef(`TODO',`
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allow $1_gpg_pinentry_t tmp_t:dir { getattr search };
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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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########################################
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## <summary>
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## Transition to a user gpg domain.
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## </summary>
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## <desc>
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## <p>
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## Transition to a user gpg domain.
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## </p>
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## <p>
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## This is a templated interface, and should only
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## be called from a per-userdomain template.
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## </p>
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## </desc>
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## <param name="userdomain_prefix">
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## <summary>
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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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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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template(`gpg_domtrans_user_gpg',`
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gen_require(`
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type $1_gpg_t, gpg_exec_t;
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')
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domtrans_pattern($2, gpg_exec_t, $1_gpg_t)
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')
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########################################
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## <summary>
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## Send generic signals to user gpg processes.
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## </summary>
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## <desc>
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## <p>
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## This is a templated interface, and should only
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## be called from a per-userdomain template.
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## </p>
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## </desc>
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## <param name="userdomain_prefix">
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## <summary>
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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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## </summary>
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## </param>
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## <param name="domain">
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## <summary>
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## Domain allowed access.
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## </summary>
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## </param>
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#
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template(`gpg_signal_user_gpg',`
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gen_require(`
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type $1_gpg_t;
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')
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allow $2 $1_gpg_t:process signal;
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')
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