2a5cd3a412
According to [1], Content-Transfer-Encoding can have one of the following values (case insensitive): "BASE64" / "QUOTED-PRINTABLE" / "8BIT" / "7BIT" / "BINARY" / x-token. Values "8bit", "7bit", and "binary" all imply that NO encoding has been performed. "x-token" refers to a custom implementation that can be done, where the encoding agent and the decoding agent must agree upon. This case is not addressed by the patch. "QUOTED-PRINTABLE" and "base64" encodings are addressed by this patch, and the decoding is performed for all the multipart content types currently supported. [1]https://www.w3.org/Protocols/rfc1341/5_Content-Transfer-Encoding.html Change-Id: Iac29f3a287bd478f7f0b55d9911ae47f3a5890fb Closes-Bug: #1696420
43 lines
1.6 KiB
Python
43 lines
1.6 KiB
Python
# Copyright 2013 Mirantis Inc.
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# Copyright 2014 Cloudbase Solutions Srl
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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import tempfile
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from cloudbaseinit.plugins.common.userdataplugins import base
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from cloudbaseinit.utils import classloader
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from cloudbaseinit.utils import encoding
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class PartHandlerPlugin(base.BaseUserDataPlugin):
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def __init__(self):
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super(PartHandlerPlugin, self).__init__("text/part-handler")
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def process(self, part):
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temp_dir = tempfile.gettempdir()
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part_handler_path = os.path.join(temp_dir, part.get_filename())
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encoding.write_file(part_handler_path, part.get_payload(decode=True))
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part_handler = classloader.ClassLoader().load_module(part_handler_path)
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if (part_handler and
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hasattr(part_handler, "list_types") and
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hasattr(part_handler, "handle_part")):
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part_handlers_dict = {}
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for handled_type in part_handler.list_types():
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part_handlers_dict[handled_type] = part_handler.handle_part
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return part_handlers_dict
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