118 lines
3.4 KiB
Plaintext
118 lines
3.4 KiB
Plaintext
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#
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# Macros for ssh agent
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#
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#
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# Author: Thomas Bleher <ThomasBleher@gmx.de>
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#
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#
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# ssh_agent_domain(domain_prefix)
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#
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# The type declaration for the executable type for this program is
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# provided separately in domains/program/ssh-agent.te.
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#
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define(`ssh_agent_domain',`
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# Define a derived domain for the ssh-agent program when executed
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# by a user domain.
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# Derived domain based on the calling user domain and the program.
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type $1_ssh_agent_t, domain, privlog;
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# Transition from the user domain to the derived domain.
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domain_auto_trans($1_t, ssh_agent_exec_t, $1_ssh_agent_t)
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# The user role is authorized for this domain.
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role $1_r types $1_ssh_agent_t;
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allow $1_ssh_agent_t privfd:fd use;
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# Write to the user domain tty.
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access_terminal($1_ssh_agent_t, $1)
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# Allow the user shell to signal the ssh program.
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allow $1_t $1_ssh_agent_t:process signal;
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# allow ps to show ssh
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can_ps($1_t, $1_ssh_agent_t)
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can_ypbind($1_ssh_agent_t)
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if (use_nfs_home_dirs) {
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allow $1_ssh_agent_t autofs_t:dir { search getattr };
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rw_dir_create_file($1_ssh_agent_t, nfs_t)
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}
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if (use_samba_home_dirs) {
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rw_dir_create_file($1_ssh_agent_t, cifs_t)
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}
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uses_shlib($1_ssh_agent_t)
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read_locale($1_ssh_agent_t)
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allow $1_ssh_agent_t proc_t:dir search;
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dontaudit $1_ssh_agent_t proc_t:{ lnk_file file } { getattr read };
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dontaudit $1_ssh_agent_t selinux_config_t:dir search;
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dontaudit $1_ssh_agent_t selinux_config_t:file { read getattr };
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read_sysctl($1_ssh_agent_t)
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# Access the ssh temporary files. Should we have an own type here
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# to which only ssh, ssh-agent and ssh-add have access?
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allow $1_ssh_agent_t $1_tmp_t:dir r_dir_perms;
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file_type_auto_trans($1_ssh_agent_t, tmp_t, $1_tmp_t)
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allow $1_ssh_agent_t self:unix_stream_socket create_stream_socket_perms;
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allow $1_ssh_agent_t self:unix_dgram_socket create_socket_perms;
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allow $1_ssh_agent_t self:process { fork sigchld setrlimit };
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allow $1_ssh_agent_t self:capability setgid;
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# access the random devices
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allow $1_ssh_agent_t { random_device_t urandom_device_t }:chr_file { getattr read };
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# for ssh-add
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can_unix_connect($1_t, $1_ssh_agent_t)
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# transition back to normal privs upon exec
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domain_auto_trans($1_ssh_agent_t, { bin_t shell_exec_t $1_home_t }, $1_t)
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if (use_nfs_home_dirs) {
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domain_auto_trans($1_ssh_agent_t, nfs_t, $1_t)
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}
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if (use_samba_home_dirs) {
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domain_auto_trans($1_ssh_agent_t, cifs_t, $1_t)
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}
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allow $1_ssh_agent_t bin_t:dir search;
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# allow reading of /usr/bin/X11 (is a symlink)
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allow $1_ssh_agent_t bin_t:lnk_file read;
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allow $1_ssh_agent_t { $1_ssh_agent_t $1_t }:process signull;
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allow $1_ssh_agent_t { home_root_t $1_home_dir_t }:dir search;
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allow $1_ssh_t $1_tmp_t:sock_file write;
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allow $1_ssh_t $1_t:unix_stream_socket connectto;
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allow $1_ssh_t $1_ssh_agent_t:unix_stream_socket connectto;
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ifdef(`xdm.te', `
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can_pipe_xdm($1_ssh_agent_t)
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# kdm: sigchld
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allow $1_ssh_agent_t xdm_t:process sigchld;
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')
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#
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# Allow command to ssh-agent > ~/.ssh_agent
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#
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allow $1_ssh_agent_t $1_home_t:file rw_file_perms;
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allow $1_ssh_agent_t $1_tmp_t:file rw_file_perms;
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allow $1_ssh_agent_t etc_runtime_t:file { getattr read };
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allow $1_ssh_agent_t etc_t:file { getattr read };
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allow $1_ssh_agent_t lib_t:file { getattr read };
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allow $1_ssh_agent_t self:dir search;
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allow $1_ssh_agent_t self:file { getattr read };
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# Allow the ssh program to communicate with ssh-agent.
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allow $1_ssh_t $1_tmp_t:sock_file write;
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allow $1_ssh_t $1_t:unix_stream_socket connectto;
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allow $1_ssh_t sshd_t:unix_stream_socket connectto;
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')dnl end if ssh_agent
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