Add license note about patterns.c

1 files changed, 30 insertions, 0 deletions

diff --git a/LICENSE.md b/LICENSE.md
index 43a3745..ad978cf 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -23,3 +23,33 @@ httpd is free software under OpenBSD's ISC-style license.
 > 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.
+
+* One exception is
+[`patterns.c`](https://github.com/reyk/httpd/blob/master/httpd/patterns.c)
+that is derived from the pattern matching code in Lua's `lstrlib.c`.
+
+> Copyright (c) 2015 Reyk Floeter <reyk@openbsd.org>
+> Copyright (C) 1994-2015 Lua.org, PUC-Rio.
+>
+> Permission is hereby granted, free of charge, to any person obtaining
+> a copy of this software and associated documentation files (the
+> "Software"), to deal in the Software without restriction, including
+> without limitation the rights to use, copy, modify, merge, publish,
+> distribute, sublicense, and/or sell copies of the Software, and to
+> permit persons to whom the Software is furnished to do so, subject to
+> the following conditions:
+>
+> The above copyright notice and this permission notice shall be
+> included in all copies or substantial portions of the Software.
+>
+> THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+> EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+> MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+> IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+> CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+> TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+> SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+>
+> Derived from Lua 5.3.1:
+> $Id: patterns.c,v 1.2 2015/06/23 15:35:20 semarie Exp $
+> Standard library for string operations and pattern-matching