INN as a whole and all code contained in it not otherwise marked with
different licenses and/or copyrights is covered by the following copyright
Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012,
2013, 2014, 2015, 2016, 2017, 2018, 2019
by Internet Systems Consortium, Inc. ("ISC")
Copyright (c) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
2002, 2003 by The Internet Software Consortium and Rich Salz
This code is derived from software contributed to the Internet Software
Consortium by Rich Salz.
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY
SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Some specific portions of INN are covered by different licenses. Those
licenses, if present, will be noted prominantly at the top of those source
files. Specifically (but possibly not comprehensively):
backends/send-uucp.in and control/perl-nocem.in are under the GNU
General Public License version 2 or later. See doc/GPL for a copy of
the GPL v2.
backends/shrinkfile.c, frontends/scanspool.in, lib/alloca.c,
lib/concat.c, lib/inet_aton.c, lib/inet_ntoa.c, lib/pread.c,
lib/pwrite.c, lib/setenv.c, lib/seteuid.c, lib/strlcat.c and
lib/strlcpy.c are in the public domain.
lib/snprintf.c may be used for any purpose as long as the author's
notice remains intact in all source code distributions.
control/pgpverify.in and control/signcontrol.in are under a BSD-style
license (with the advertising clause) with UUNET Technologies, Inc. as
the copyright holder. See the end of those files for details.
control/controlchan.in and control/modules/*.pl are covered by a
two-clause BSD-style license (no advertising clause). See the
beginning of those files for details.
lib/strcasecmp.c, lib/strspn.c, and lib/strtok.c are taken from BSD
sources and are covered by the standard BSD license. See those files
for more details.
lib/md5.c is covered under the standard free MD5 license from RSA Data
Security. See the file for more details. A clarification is also
provided here: <http://www.ietf.org/ietf/IPR/RSA-MD-all>.
"Implementations of these message-digest algorithms, including
implementations derived from the reference C code in RFC-1319,
RFC-1320, and RFC-1321, may be made, used, and sold without
license from RSA for any purpose."
history/his.c and history/hisv6/hisv6.c are under a license very
similar to the new BSD license (no advertising clause) but with Thus
plc as the copyright holder. See those files for details.
lib/tst.c, include/inn/tst.h and doc/pod/tst.pod are derived from
<http://www.octavian.org/cs/tst1.3.tar.gz> and are under the new BSD
license (no advertising clause), but with Peter A. Friend as the
tests/runtests.c is covered under a license very similar to the MIT/X
Consortium license. See the beginning of the file for details.
Note that all portions of INN that link with core INN code have to be
covered by licenses compatible with the license at the top of this file,
and since INN links with several external libraries if so configured (such
as OpenSSL), should also be compatible with the licenses of those external
libraries to be safe. Some portions of this distribution are covered by
more restrictive licenses, but all of that code is completely stand-alone,
either as a standalone script or as code that compiles into a separate
Please note that the files in the contrib directory are not properly part
of INN and may be under widely varying licenses. Please see each file
and/or its documentation for license information.