Library and commandline tool to create logical diffs of zonefiles

Installing

python setup.py install

Usage

You can use this tool as a python library or as a standalone tool.

Standalone

python -mzonediff [options] [versioncontrol] zonefile version1 [version2]

zonediff can use plaintext files or version control checkouts. At the moment it supports git, bzr and rcs, but support for other systems is easy to implement. The two main modes of operations are:

• python -mzonediff foo-old.zone foo-new.zone
• python -mzonediff --bzr foo.zone 45 46

Output is either html or plain text.

See the output of python -mzonediff --help for complete usage info

As a library

3 functions are available: diff_zones, format_changes_plain and format_changes_html. They do what their name suggests they do.

diff_zones(zone1, zone2, ignore_ttl=False, ignore_soa=False) -> changes

Compares two dns.zone.Zone objects and returns a list of all changes in the format (name, oldnode, newnode).

If ignore_ttl is true, a node will not be added to this list if the only change is its TTL.

If ignore_soa is true, a node will not be added to this list if the only changes is a change in a SOA Rdata set.

The returned nodes do include all Rdata sets for all nodes with changes, including unchanged Rdata sets.

dns.zone.Zone objects can be created from open filehandles as such: dns.zone.from_file(old, origin = '.', check_origin=False)

format_changes(oldfile, newfile, changes, ignore_ttl=False) -> str

Given 2 filenames and a list of changes from diff_zones, produce diff-like output. If ignore_ttl is True, TTL-only changes are not displayed

format_changes(oldfile, newfile, changes, ignore_ttl=False) -> str

Given 2 filenames and a list of changes from diff_zones, produce nice html output. If ignore_ttl is True, TTL-only changes are not displayed