including checks for "backups that exist when actual file is deleted", a la
the existing mechanism used for "/etc/ifconfig.*" ... "/etc/rc.d/*" checks.
This resolves [security/15798] from Bob Kemp <bob@allegory.demon.co.uk>.
- Resurrect /etc/changelist, even if it's an "empty" file by default,
because it's easier to use than /etc/mtree/special.local for adding
a couple of simple files. Back by popular demand (hi @@@! :-)
- Add /etc/rc.d/* to the list of "dynamic" files; this notices changes
in user-added scripts
- Only calculate the mtree -I nomail list once, and re-use
- Use "cat foo | while read file" instead of "for file in `cat foo`" ;
handles whitespace better...
Features:
- Add a bunch of stuff to /etc/mtree/special to enable removal of
/etc/changelist:
- files which we want to monitor for changes but don't want to
see the diffs of (master.passwd, ssh_host_key, ...) are
tagged with "nomail"
- files which we don't want to monitor are tagged with "exclude"
(such as netgroup.db, kvm.db, ...)
- monitor /etc/mtree/special.local, /root/.ssh/*
- remove /etc/changelist, and a bunch of XXX comments
- use mtree(8)'s -D, -I, and -E to generate lists of files to
actually do the changelist stuff on.
- support /etc/mtree/special.local as an optional user-provided
version of /etc/mtree/special (effectively, an enhanced
/etc/changelist)
- Add code to monitor: /etc/ifconfig.* /etc/raid*.conf /etc/rc.conf.d/*
including support for these files being added and removed at will.
- If /sbin/fdisk exists, backup the output of "fdisk $disk" for all
the active disk drives as part of $check_disklabels
- Check permissions on: ~/.ssh/* ~/.shosts
Details:
- Reorder initialisation of defaults
- Remove special case for /etc/master.passwd "monitor but don't email diffs"
with general case for other similar files.
- Keep all `autogenerated' files (such as disklabel.*, setuid.current, ...)
in "$backup_dir/work", to minimise name clashes.
- Add migrate_file(old, new) to do the hard work of migrating files
from the old `top level' /var/backups mechanism to the `full path'
mechanism recently added. Use this appropriately.
- Add backup_and_diff(file, printdiffs), to the hard work of backing-up
and diff-ing files.
- Cleanup use of shell redirects
- /bin/sh supports ~root globbing, so use it.
- Improve umask checking; use awk regex rather than awk math
of all installed pkgs and their +CONTENTS and +REQUIRED_BY files (if
they have one) and handling this file along with all the other
CHANGELIST stuff.
Greg Woods gets points for coming up with the idea.
Luke Mewburn asked me to do it, and provided lots of criticism along
the way.
1) If a password entry is of the form \*[A-z-]+, do not complain that
the account is off but has a valid password. Thus you can do
passwords like *ssh to indicate ssh only logins.
We should come up with a standard scheme for what various *keywords mean.
Note that if the field length is 13, 20 or 34 you'll still get
bitched at.
This code should be cleaned up. (So should the password scheme.)
2) If the entry is for "toor", don't complain that the account is off
but has a valid shell. We ship with toor:*:, there is no point in
complaining about it.
Part of the campaign against spurious security warning output.
to the basename of the file, use the whole path with $backup_dir
prepended, in effect mirrorring the directory tree. This eliminates
the possibility of a name collision.
Closes pr bin/12727.
directory from /var/backup (useful for those of us who have a separate /var
and would like to have our backup disklabels on the root filesystem).
Default behaviour unchanged. backup_dir being unset is taken as /var/backup.
directories with -maproot=nobody on the server. The argument to be
made is that if NetBSD's root can't read these files, it shouldn't
try to check them.
should detect added or removed disks as well. backup labels go in
/var/backups/disklabel.XXX (XXX = disk name, e.g., sd0), and the
changelist style backups have .current or .backup suffixes
* minor whitespace, formatting, and comment cleanup
* When a file is removed, move its .current file to .backup.
* When a file is added, create its .current file.
* In either case, send a diff against /dev/null.
Mostly from Jim Bernard in PR 4183, with the removal case fixed.
- clean up comments and generated output.
- clean up $SECUREDIR if SIGINT or SIGQUIT received.
- .rhosts may have to be world readable in NFS environments, so allow it to be.
- update list of disks to check for reasonable permissions
- don't show differences in /etc/master.passwd, as the encrypted strings may
be sent. From reading comments earlier in the script, this was the intention
anyway. Fix from Jim Bernard <jbernard@tater.mines.edu> in [security/3994].
- when checking /etc/ftpusers, skip comment lines and only match full
usernames.
XXX: this should be enhanced to check lines of the enhanced ftpusers format.
