mirror of
https://github.com/ansible-collections/community.crypto.git
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54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# Copyright (c) 2024, Felix Fontein <felix@fontein.de>
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# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
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# SPDX-License-Identifier: GPL-3.0-or-later
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from __future__ import annotations
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from ansible.module_utils.common.text.converters import to_native
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from ansible_collections.community.crypto.plugins.module_utils.crypto.math import (
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convert_int_to_hex,
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)
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def th(number):
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abs_number = abs(number)
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mod_10 = abs_number % 10
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mod_100 = abs_number % 100
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if mod_100 not in (11, 12, 13):
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if mod_10 == 1:
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return "st"
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if mod_10 == 2:
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return "nd"
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if mod_10 == 3:
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return "rd"
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return "th"
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def parse_serial(value):
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"""
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Given a colon-separated string of hexadecimal byte values, converts it to an integer.
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"""
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value = to_native(value)
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result = 0
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for i, part in enumerate(value.split(":")):
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try:
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part_value = int(part, 16)
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if part_value < 0 or part_value > 255:
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raise ValueError("the value is not in range [0, 255]")
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except ValueError as exc:
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raise ValueError(
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f"The {i + 1}{th(i + 1)} part {part!r} is not a hexadecimal number in range [0, 255]: {exc}"
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)
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result = (result << 8) | part_value
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return result
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def to_serial(value):
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"""
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Given an integer, converts its absolute value to a colon-separated string of hexadecimal byte values.
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"""
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value = convert_int_to_hex(value).upper()
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if len(value) % 2 != 0:
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value = "0" + value
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return ":".join(value[i : i + 2] for i in range(0, len(value), 2))
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