57 lines
2.2 KiB
Python
57 lines
2.2 KiB
Python
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# -*- encoding: utf8 -*-
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2017 boring-stuff <boring-stuff@users.noreply.github.com>
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#
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# This program 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 2 of the License, or
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# (at your option) any later version.
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#
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# This program 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 along
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# with this program; if not, see <http://www.gnu.org/licenses/>.
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def _sanitize_char(input_char, extra_allowed_characters):
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input_char_ord = ord(input_char)
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if (input_char_ord >= ord('a') and input_char_ord <= ord('z')) \
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or (input_char_ord >= ord('A') and input_char_ord <= ord('Z')) \
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or (input_char_ord >= ord('0') and input_char_ord <= ord('9')) \
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or (input_char in ['$', '_', '-', '.']) \
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or (extra_allowed_characters != None
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and input_char in extra_allowed_characters):
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result = input_char
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else:
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result = '_'
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return result
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# This function needs to be synchronized with qrexec-daemon.c's sanitize_name()
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# from the qubes-core-admin-linux repository.
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#
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# See https://github.com/QubesOS/qubes-core-admin-linux/blob/4f0878ccbf8a95f8264b54d2b6f4dc433ca0793a/qrexec/qrexec-daemon.c#L627-L646
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#
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def _sanitize_name(input_string, extra_allowed_characters, assert_sanitized):
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result = ''.join(_sanitize_char(character, extra_allowed_characters) \
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for character in input_string)
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if assert_sanitized:
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assert input_string == result, \
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'Input string was expected to be sanitized, but was not.'
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else:
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return result
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def sanitize_domain_name(input_string, assert_sanitized = False):
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return _sanitize_name(input_string, None, assert_sanitized)
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def sanitize_service_name(input_string, assert_sanitized = False):
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return _sanitize_name(input_string, {'+'}, assert_sanitized)
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