Add SPDX-License-Identifier headers

Add SPDX-License-Identifier headers to all substantial source files.
Collapse copyright years.  Add some Emacs configuration for files
where the copyright notice is at the end.  Add a test that every
file has SPDX-License-Identifier.

8 files changed, 51 insertions, 8 deletions

diff --git a/contrib/ad-keytab b/contrib/ad-keytab
index 836cda5..badcb8d 100755
--- a/contrib/ad-keytab
+++ b/contrib/ad-keytab
@@ -5,7 +5,7 @@
 # Written by Bill MacAllister <whm@dropbox.com>
 # Copyright 2016 Dropbox, Inc.
 #
-# See LICENSE for licensing terms.
+# SPDX-License-Identifier: MIT
 
 ##############################################################################
 # Declarations
@@ -537,7 +537,8 @@ exit;
 __END__
 
 =for stopwords
-KDC LDAP MacAllister keytab keytabs msktutil ldapsearch
+KDC LDAP MacAllister keytab keytabs msktutil ldapsearch MERCHANTABILITY
+NONINFRINGEMENT sublicense SPDX-License-Identifier MIT
 
 =head1 NAME
 
@@ -664,4 +665,28 @@ perldoc Wallet::Config.
 
 Bill MacAllister <whm@dropbox.com>
 
+=head1 COPYRIGHT AND LICENSE
+
+Copyright 2016 Dropbox, Inc.
+
+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.
+
+SPDX-License-Identifier: MIT
+
 =cut
diff --git a/contrib/commerzbank/wallet-history b/contrib/commerzbank/wallet-history
index 9826057..0adc766 100755
--- a/contrib/commerzbank/wallet-history
+++ b/contrib/commerzbank/wallet-history
@@ -31,6 +31,9 @@
 # perl wallet-history.pl ... (t.b.d.)...
 #
 #--------------------------------------------------------------------------------------------------------------
+#
+# SPDX-License-Identifier: MIT
+
 # Version.
 
 my $VERSION = "0.5";
diff --git a/contrib/convert-srvtab-db b/contrib/convert-srvtab-db
index e05b394..2801767 100755
--- a/contrib/convert-srvtab-db
+++ b/contrib/convert-srvtab-db
@@ -6,7 +6,7 @@
 # Copyright 2008
 #     The Board of Trustees of the Leland Stanford Junior University
 #
-# See LICENSE for licensing terms.
+# SPDX-License-Identifier: MIT
 
 ##############################################################################
 # Modules and site configuration
diff --git a/contrib/used-principals b/contrib/used-principals
index 7169f0b..c6cac9b 100755
--- a/contrib/used-principals
+++ b/contrib/used-principals
@@ -6,7 +6,7 @@
 # Copyright 2008
 #     The Board of Trustees of the Leland Stanford Junior University
 #
-# See LICENSE for licensing terms.
+# SPDX-License-Identifier: MIT
 
 require 5.006;
 use strict;
diff --git a/contrib/wallet-contacts b/contrib/wallet-contacts
index 0c72c9c..6ad2292 100755
--- a/contrib/wallet-contacts
+++ b/contrib/wallet-contacts
@@ -6,7 +6,7 @@
 # Copyright 2009, 2015
 #     The Board of Trustees of the Leland Stanford Junior University
 #
-# See LICENSE for licensing terms.
+# SPDX-License-Identifier: MIT
 
 ##############################################################################
 # Modules and declarations
diff --git a/contrib/wallet-rekey-periodic b/contrib/wallet-rekey-periodic
index c15d83f..1e22e1e 100755
--- a/contrib/wallet-rekey-periodic
+++ b/contrib/wallet-rekey-periodic
@@ -170,7 +170,7 @@ DOCS=<<__END_OF_DOCS__
 
 =for stopwords
 Allbery DES Heimdal hostname keytab keytabs ktutil rekey rekeyable
-rekeying wallet-rekey wallet-rekey-periodic
+rekeying wallet-rekey wallet-rekey-periodic SPDX-License-Identifier MIT
 
 =head1 NAME
 
@@ -232,7 +232,7 @@ Russ Allbery <eagle@eyrie.org>
 
 =head1 COPYRIGHT AND LICENSE
 
-Copyright 2013, 2014 The Board of Trustees of the Leland Stanford Junior
+Copyright 2013-2014 The Board of Trustees of the Leland Stanford Junior
 University
 
 Permission is hereby granted, free of charge, to any person obtaining a
@@ -253,6 +253,8 @@ 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.
 
+SPDX-License-Identifier: MIT
+
 =head1 SEE ALSO
 
 ktutil(8), wallet(1), wallet-rekey(1)
@@ -260,3 +262,7 @@ ktutil(8), wallet(1), wallet-rekey(1)
 =cut
 
 __END_OF_DOCS__
+
+# Local Variables:
+# copyright-at-end-flag: t
+# End:
diff --git a/contrib/wallet-summary b/contrib/wallet-summary
index ba224d0..8a12294 100755
--- a/contrib/wallet-summary
+++ b/contrib/wallet-summary
@@ -173,6 +173,7 @@ close REPORT;
 
 =for stopwords
 -hm keytab keytabs MERCHANTABILITY NONINFRINGEMENT sublicense Allbery
+SPDX-License-Identifier MIT
 
 =head1 NAME
 
@@ -260,4 +261,6 @@ 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.
 
+SPDX-License-Identifier: MIT
+
 =cut
diff --git a/contrib/wallet-unknown-hosts b/contrib/wallet-unknown-hosts
index 50b5a04..adf7b27 100755
--- a/contrib/wallet-unknown-hosts
+++ b/contrib/wallet-unknown-hosts
@@ -190,7 +190,7 @@ if ($command eq 'check') {
 
 =for stopwords
 ACL API CNAME DNS IP env keytab keytabs timestamp MERCHANTABILITY
-NONINFRINGEMENT sublicense Allbery
+NONINFRINGEMENT sublicense Allbery SPDX-License-Identifier MIT
 
 =head1 NAME
 
@@ -282,4 +282,10 @@ 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.
 
+SPDX-License-Identifier: MIT
+
 =cut
+
+# Local Variables:
+# copyright-at-end-flag: t
+# End: