1900668638
The latest revision of the labeled policy patches which enable both labeled and unlabeled policy support for NetLabel. This revision takes into account Chris' feedback from the first version and reduces the number of interface calls in each domain down to two at present: one for unlabeled access, one for NetLabel access. The older, transport layer specific interfaces, are still present for use by third-party modules but are not used in the default policy modules. trunk: Use netmsg initial SID for MLS-only Netlabel packets, from Paul Moore. This patch changes the policy to use the netmsg initial SID as the "base" SID/context for NetLabel packets which only have MLS security attributes. Currently we use the unlabeled initial SID which makes it very difficult to distinquish between actual unlabeled packets and those packets which have MLS security attributes.
385 lines
10 KiB
Plaintext
385 lines
10 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;
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type 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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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;
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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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domain_type($1_gpg_helper_t)
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domain_entry_file($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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domain_type($1_gpg_pinentry_t)
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domain_entry_file($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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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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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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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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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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# 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 };
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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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files_tmp_filetrans($1_gpg_agent_t, $1_gpg_agent_tmp_t, { file sock_file dir })
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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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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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# 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(`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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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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# 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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