305 lines
8.1 KiB
Plaintext
305 lines
8.1 KiB
Plaintext
## <summary>SELinux utility to run a shell with a new role</summary>
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#######################################
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## <summary>
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## The per role template for the userhelper module.
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## </summary>
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## <desc>
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## <p>
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## This template creates a derived domains which are used
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## for userhelper.
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## </p>
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## <p>
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## This template 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="user_domain">
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## <summary>
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## The type of the user domain.
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## </summary>
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## </param>
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## <param name="user_role">
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## <summary>
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## The role associated with the user domain.
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## </summary>
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## </param>
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#
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template(`userhelper_per_role_template',`
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gen_require(`
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type userhelper_exec_t, userhelper_conf_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_userhelper_t;
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domain_type($1_userhelper_t)
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domain_entry_file($1_userhelper_t,userhelper_exec_t)
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domain_role_change_exemption($1_userhelper_t)
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domain_obj_id_change_exemption($1_userhelper_t)
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domain_interactive_fd($1_userhelper_t)
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domain_subj_id_change_exemption($1_userhelper_t)
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role $3 types $1_userhelper_t;
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########################################
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#
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# Local policy
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#
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allow $1_userhelper_t self:capability { setuid setgid net_bind_service dac_override chown sys_tty_config };
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allow $1_userhelper_t self:process ~{ ptrace setcurrent setexec setfscreate setrlimit execmem execstack execheap };
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allow $1_userhelper_t self:process setexec;
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allow $1_userhelper_t self:fd use;
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allow $1_userhelper_t self:fifo_file rw_fifo_file_perms;
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allow $1_userhelper_t self:shm create_shm_perms;
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allow $1_userhelper_t self:sem create_sem_perms;
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allow $1_userhelper_t self:msgq create_msgq_perms;
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allow $1_userhelper_t self:msg { send receive };
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allow $1_userhelper_t self:unix_dgram_socket create_socket_perms;
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allow $1_userhelper_t self:unix_stream_socket create_stream_socket_perms;
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allow $1_userhelper_t self:unix_dgram_socket sendto;
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allow $1_userhelper_t self:unix_stream_socket connectto;
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allow $1_userhelper_t self:sock_file read_sock_file_perms;
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#Transition to the derived domain.
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domtrans_pattern($2,userhelper_exec_t,$1_userhelper_t)
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allow $1_userhelper_t userhelper_conf_t:dir rw_dir_perms;
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rw_files_pattern($1_userhelper_t,userhelper_conf_t,userhelper_conf_t)
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can_exec($1_userhelper_t, userhelper_exec_t)
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dontaudit $2 $1_userhelper_t:process signal;
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kernel_read_all_sysctls($1_userhelper_t)
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kernel_getattr_debugfs($1_userhelper_t)
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kernel_read_system_state($1_userhelper_t)
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# Execute shells
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corecmd_exec_shell($1_userhelper_t)
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# By default, revert to the calling domain when a program is executed
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corecmd_bin_domtrans($1_userhelper_t,$2)
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# Inherit descriptors from the current session.
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domain_use_interactive_fds($1_userhelper_t)
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# for when the user types "exec userhelper" at the command line
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domain_sigchld_interactive_fds($1_userhelper_t)
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dev_read_urand($1_userhelper_t)
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# Read /dev directories and any symbolic links.
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dev_list_all_dev_nodes($1_userhelper_t)
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files_list_var_lib($1_userhelper_t)
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# Write to utmp.
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files_pid_filetrans($1_userhelper_t,initrc_var_run_t,file)
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# Read the /etc/security/default_type file
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files_read_etc_files($1_userhelper_t)
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# Read /var.
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files_read_var_files($1_userhelper_t)
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files_read_var_symlinks($1_userhelper_t)
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# for some PAM modules and for cwd
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files_search_home($1_userhelper_t)
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fs_search_auto_mountpoints($1_userhelper_t)
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fs_read_nfs_files($1_userhelper_t)
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fs_read_nfs_symlinks($1_userhelper_t)
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# Allow $1_userhelper to obtain contexts to relabel TTYs
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selinux_get_fs_mount($1_userhelper_t)
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selinux_validate_context($1_userhelper_t)
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selinux_compute_access_vector($1_userhelper_t)
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selinux_compute_create_context($1_userhelper_t)
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selinux_compute_relabel_context($1_userhelper_t)
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selinux_compute_user_contexts($1_userhelper_t)
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# Read the devpts root directory.
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term_list_ptys($1_userhelper_t)
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# Relabel terminals.
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term_relabel_all_user_ttys($1_userhelper_t)
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term_relabel_all_user_ptys($1_userhelper_t)
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# Access terminals.
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term_use_all_user_ttys($1_userhelper_t)
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term_use_all_user_ptys($1_userhelper_t)
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auth_domtrans_chk_passwd($1_userhelper_t)
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auth_manage_pam_pid($1_userhelper_t)
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auth_manage_var_auth($1_userhelper_t)
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auth_search_pam_console_data($1_userhelper_t)
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# Inherit descriptors from the current session.
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init_use_fds($1_userhelper_t)
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# Write to utmp.
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init_manage_utmp($1_userhelper_t)
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libs_use_ld_so($1_userhelper_t)
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libs_use_shared_libs($1_userhelper_t)
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miscfiles_read_localization($1_userhelper_t)
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seutil_read_config($1_userhelper_t)
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seutil_read_default_contexts($1_userhelper_t)
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userdom_use_unpriv_users_fds($1_userhelper_t)
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# Allow $1_userhelper_t to transition to user domains.
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userdom_bin_spec_domtrans_unpriv_users($1_userhelper_t)
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userdom_entry_spec_domtrans_unpriv_users($1_userhelper_t)
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ifdef(`distro_redhat',`
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optional_policy(`
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# Allow transitioning to rpm_t, for up2date
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rpm_domtrans($1_userhelper_t)
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')
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')
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tunable_policy(`! secure_mode',`
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#if we are not in secure mode then we can transition to sysadm_t
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userdom_bin_spec_domtrans_sysadm($1_userhelper_t)
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userdom_entry_spec_domtrans_sysadm($1_userhelper_t)
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')
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optional_policy(`
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ethereal_domtrans_user_ethereal($1,$1_userhelper_t)
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')
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optional_policy(`
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logging_send_syslog_msg($1_userhelper_t)
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')
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optional_policy(`
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nis_use_ypbind($1_userhelper_t)
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')
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optional_policy(`
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nscd_socket_use($1_userhelper_t)
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')
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ifdef(`TODO',`
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allow $1_userhelper_t xdm_t:fd use;
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allow $1_userhelper_t xdm_var_run_t:dir search;
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allow $1_userhelper_t xdm_t:fifo_file { getattr read write ioctl };
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optional_policy(`
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allow $1_userhelper_t gphdomain:fd use;
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')
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optional_policy(`
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domtrans_pattern($1_userhelper_t, xauth_exec_t, $1_xauth_t)
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allow $1_userhelper_t $1_xauth_home_t:file { getattr read };
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')
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optional_policy(`
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domtrans_pattern($1_mozilla_t, userhelper_exec_t, $1_userhelper_t)
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')
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# for when the network connection is killed
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dontaudit unpriv_userdomain $1_userhelper_t:process signal;
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')
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')
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########################################
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## <summary>
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## Search the userhelper configuration directory.
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## </summary>
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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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interface(`userhelper_search_config',`
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gen_require(`
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type userhelper_conf_t;
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')
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allow $1 userhelper_conf_t:dir search_dir_perms;
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')
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########################################
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## <summary>
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## Do not audit attempts to search
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## the userhelper configuration directory.
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## </summary>
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## <param name="domain">
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## <summary>
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## Domain to not audit.
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## </summary>
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## </param>
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#
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interface(`userhelper_dontaudit_search_config',`
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gen_require(`
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type userhelper_conf_t;
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')
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dontaudit $1 userhelper_conf_t:dir search_dir_perms;
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')
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########################################
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## <summary>
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## Allow domain to use userhelper file descriptor.
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## </summary>
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## <param name="prefix">
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## <summary>
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## The prefix of the domain, example user is the prefix of 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(`userhelper_use_user_fd',`
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gen_require(`
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type $1_userhelper_t;
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')
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allow $2 $1_userhelper_t:fd use;
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')
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########################################
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## <summary>
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## Allow domain to send sigchld to userhelper.
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## </summary>
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## <param name="prefix">
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## <summary>
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## The prefix of the domain, example user is the prefix of 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(`userhelper_sigchld_user',`
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gen_require(`
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type $1_userhelper_t;
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')
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allow $2 $1_userhelper_t:process sigchld;
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')
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########################################
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## <summary>
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## Execute the userhelper program in the caller domain.
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## </summary>
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## <param name="domain">
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## <summary>
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## The type of the process performing this action.
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## </summary>
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## </param>
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#
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interface(`userhelper_exec',`
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gen_require(`
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type userhelper_exec_t;
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')
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can_exec($1,userhelper_exec_t)
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')
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