This removes the custom tcp wrappers by emptying the /etc/hosts.* configuration files.
Signed-off-by: Wanlong Gao <[email protected]> --- sysprep/Makefile.am | 1 + sysprep/sysprep_operation_tcp_wrapper.ml | 52 ++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+) create mode 100644 sysprep/sysprep_operation_tcp_wrapper.ml diff --git a/sysprep/Makefile.am b/sysprep/Makefile.am index eb372aa..aa49605 100644 --- a/sysprep/Makefile.am +++ b/sysprep/Makefile.am @@ -67,6 +67,7 @@ operations = \ ssh_hostkeys \ ssh_userdir \ sssd_db_log \ + tcp_wrapper \ tmp_files \ udev_persistent_net \ user_account \ diff --git a/sysprep/sysprep_operation_tcp_wrapper.ml b/sysprep/sysprep_operation_tcp_wrapper.ml new file mode 100644 index 0000000..77f1e0a --- /dev/null +++ b/sysprep/sysprep_operation_tcp_wrapper.ml @@ -0,0 +1,52 @@ +(* virt-sysprep + * Copyright (C) 2013 Fujitsu Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *) + +open Sysprep_operation +open Common_gettext.Gettext + +module G = Guestfs + +let tcp_wrapper_perform g root = + let typ = g#inspect_get_type root in + if typ <> "windows" then ( + let paths = [ "/etc/hosts.atm"; + "/etc/hosts.allow"; + "/etc/hosts.deny"; ] in + List.iter ( + fun path -> + (try g#rm path with G.Error _ -> ()); + (try g#touch path with G.Error _ -> ()); + ) paths; + [ `Created_files ] + ) + else [] + +let op = { + defaults with + name = "tcp-wrapper"; + enabled_by_default = false; + heading = s_"Remove the custom tcp wrappers"; + pod_description = Some (s_"\ +This removes the custom tcp wrappers by emptying C</etc/hosts.*>. + +Note this is I<not> enabled by default since it may expose guests +to exploits. Use with care."); + perform_on_filesystems = Some tcp_wrapper_perform; +} + +let () = register_operation op -- 1.8.4.27.g0a41de8 _______________________________________________ Libguestfs mailing list [email protected] https://www.redhat.com/mailman/listinfo/libguestfs
