http_filter license

The Artistic License


The intent of this document is to state the conditions under which a
Package may be copied, such that the Copyright Holder maintains some
semblance of artistic control over the development of the package,
while giving the users of the package the right to use and distribute
the Package in a more-or-less customary fashion, plus the right to make
reasonable modifications.


* "Package" refers to the collection of files distributed by the
   Copyright Holder, and derivatives of that collection of files created
   through textual modification.

* "Standard Version" refers to such a Package if it has not been
   modified, or has been modified in accordance with the wishes of the
   Copyright Holder.

* "Copyright Holder" is whoever is named in the copyright or copyrights
   for the package.

* "You" is you, if you're thinking about copying or distributing this

* "Reasonable copying fee" is whatever you can justify on the basis of
   media cost, duplication charges, time of people involved, and so
   on. (You will not be required to justify it to the Copyright Holder,
   but only to the computing community at large as a market that must
   bear the fee.)

* "Freely Available" means that no fee is charged for the item itself,
   though there may be fees involved in handling the item. It also
   means that recipients of the item may redistribute it under the same
   conditions they received it.

1. You may make and give away verbatim copies of the source form of the
   Standard Version of this Package without restriction, provided that
   you duplicate all of the original copyright notices and associated

2. You may apply bug fixes, portability fixes and other modifications
   derived from the Public Domain or from the Copyright Holder. A Package
   modified in such a way shall still be considered the Standard Version.

3. You may otherwise modify your copy of this Package in any way, provided
   that you insert a prominent notice in each changed file stating how
   and when you changed that file, and provided that you do at least
   ONE of the following:

   a) place your modifications in the Public Domain or otherwise make
      them Freely Available, such as by posting said modifications to
      Usenet or an equivalent medium, or placing the modifications on a
      major archive site such as, or by allowing the Copyright
      Holder to include your modifications in the Standard Version of
      the Package.

   b) use the modified Package only within your corporation or

   c) rename any non-standard executables so the names do not conflict
      with standard executables, which must also be provided, and
      provide a separate manual page for each non-standard executable
      that clearly documents how it differs from the Standard Version.

   d) make other distribution arrangements with the Copyright Holder.

4. You may distribute the programs of this Package in object code or
   executable form, provided that you do at least ONE of the following:

   a) distribute a Standard Version of the executables and library
      files, together with instructions (in the manual page or equivalent)
      on where to get the Standard Version.

   b) accompany the distribution with the machine-readable source of
      the Package with your modifications.

   c) accompany any non-standard executables with their corresponding
      Standard Version executables, giving the non-standard executables
      non-standard names, and clearly documenting the differences in
      manual pages (or equivalent), together with instructions on where
      to get the Standard Version.

   d) make other distribution arrangements with the Copyright Holder.

5. You may charge a reasonable copying fee for any distribution of
   this Package. You may charge any fee you choose for support of this
   Package. You may not charge a fee for this Package itself. However,
   you may distribute this Package in aggregate with other (possibly
   commercial) programs as part of a larger (possibly commercial)
   software distribution provided that you do not advertise this Package
   as a product of your own.

6. The scripts and library files supplied as input to or produced as
   output from the programs of this Package do not automatically fall
   under the copyright of this Package, but belong to whomever generated
   them, and may be sold commercially, and may be aggregated with this

7. C or perl subroutines supplied by you and linked into this Package
   shall not be considered part of this Package.

8. The name of the Copyright Holder may not be used to endorse or
   promote products derived from this software without specific prior
   written permission.


The End