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37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
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# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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Helper functions for working with paths
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"""
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import posixpath
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def sanitize_path(path):
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"""Make absolute (with leading slash) to prevent access to other data.
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Preserves an potential trailing slash."""
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trailing_slash = "/" if path.endswith("/") else ""
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path = posixpath.normpath(path)
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new_path = "/"
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for part in path.split("/"):
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if not part or part in (".", ".."):
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continue
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new_path = posixpath.join(new_path, part)
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trailing_slash = "" if new_path.endswith("/") else trailing_slash
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return new_path + trailing_slash
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