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diff --git a/mediagoblin/tools/licenses.py b/mediagoblin/tools/licenses.py
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+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from collections import namedtuple
+# Give a License attribute names: uri, name, abbreviation
+License = namedtuple("License", ["abbreviation", "name", "uri"])
+
+SORTED_LICENSES = [
+    License("All rights reserved", "No license specified", ""),
+    License("CC BY 3.0", "Creative Commons Attribution Unported 3.0",
+           "http://creativecommons.org/licenses/by/3.0/"),
+    License("CC BY-SA 3.0",
+           "Creative Commons Attribution-ShareAlike Unported 3.0",
+           "http://creativecommons.org/licenses/by-sa/3.0/"),
+    License("CC BY-ND 3.0",
+           "Creative Commons Attribution-NoDerivs 3.0 Unported",
+           "http://creativecommons.org/licenses/by-nd/3.0/"),
+    License("CC BY-NC 3.0",
+          "Creative Commons Attribution-NonCommercial Unported 3.0",
+          "http://creativecommons.org/licenses/by-nc/3.0/"),
+    License("CC BY-NC-SA 3.0",
+           "Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported",
+           "http://creativecommons.org/licenses/by-nc-sa/3.0/"),
+    License("CC BY-NC-ND 3.0",
+           "Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported",
+           "http://creativecommons.org/licenses/by-nc-nd/3.0/"),
+    License("CC0 1.0",
+           "Creative Commons CC0 1.0 Universal",
+           "http://creativecommons.org/publicdomain/zero/1.0/"),
+    License("Public Domain","Public Domain",
+           "http://creativecommons.org/publicdomain/mark/1.0/"),
+    ]
+
+# dict {uri: License,...} to enable fast license lookup by uri. Ideally,
+# we'd want to use an OrderedDict (python 2.7+) here to avoid having the
+# same data in two structures
+SUPPORTED_LICENSES = dict(((l.uri, l) for l in SORTED_LICENSES))
+
+
+def get_license_by_url(url):
+    """Look up a license by its url and return the License object"""
+    try:
+        return SUPPORTED_LICENSES[url]
+    except KeyError:
+        # in case of an unknown License, just display the url given
+        # rather than exploding in the user's face.
+        return License(url, url, url)
+
+
+def licenses_as_choices():
+    """List of (uri, abbreviation) tuples for HTML choice field population
+
+    The data seems to be consumed/deleted during usage, so hand over a
+    throwaway list, rather than just a generator.
+    """
+    return [(lic.uri, lic.abbreviation) for lic in SORTED_LICENSES]