1 files changed, 58 insertions, 0 deletions
diff --git a/deny.toml b/deny.toml
new file mode 100644
index 0000000..3edb075
--- /dev/null
+++ b/deny.toml
@@ -0,0 +1,58 @@
+# Copyright 2020 Alyssa Ross
+#
+# This file is part of pushmail.
+#
+# pushmail is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+# 
+# pushmail is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with pushmail; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# Linking pushmail statically or dynamically with other modules is
+# making a combined work based on pushmail. Thus, the terms and
+# conditions of the GNU General Public License cover the whole
+# combination.
+# 
+# In addition, as a special exception, the copyright holders of
+# pushmail give you permission to combine pushmail with free software
+# programs or libraries that are released under the GNU LGPL and with
+# code included in the standard release of OpenSSL under the OpenSSL
+# License or the Original SSLeay License (or modified versions of such
+# code, with unchanged license). You may copy and distribute such a
+# system following the terms of the GNU GPL for pushmail and the
+# licenses of the other code concerned, provided that you include the
+# source code of that other code when and as the GNU GPL requires
+# distribution of source code.
+# 
+# Note that people who make modified versions of pushmail are not
+# obligated to grant this special exception for their modified
+# versions; it is their choice whether to do so. The GNU General
+# Public License gives permission to release a modified version
+# without this exception; this exception also makes it possible to
+# release a modified version which carries forward this exception.
+
+# The purpose of this file is to check that all dependencies are
+# available under licenses that are compatible with the GPLv2 and
+# later versions.  Notably, the Apache-2.0 license is not compatible
+# with the GPLv2.  If we need to depend on a library available only
+# under Apache-2.0, we'd need to bump the GPL minimum to 3.0.
+# Additionally, if we added a dependency on a GPL library, we'd need
+# to make sure pushmail was only licensed under a subset of the GPL
+# versions that library is licensed under, and that, like us, the
+# library offered an exception for linking with OpenSSL.
+
+[licenses]
+unlicensed = "deny"
+copyleft = "allow"
+allow = [
+    "MIT",
+    "BSL-1.0",
+]