mirror of
https://github.com/morpheus65535/bazarr.git
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113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
# BSD 2-Clause License
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#
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# Apprise - Push Notification Library.
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# Copyright (c) 2026, Chris Caron <lead2gold@gmail.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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import base64
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import binascii
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import copy
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import json
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def base64_urlencode(data: bytes) -> str:
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"""URL Safe Base64 Encoding."""
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try:
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return base64.urlsafe_b64encode(data).rstrip(b"=").decode("utf-8")
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except TypeError:
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# data is not supported; avoid raising exception
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return None
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def base64_urldecode(data: str) -> bytes:
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"""URL Safe Base64 Encoding."""
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try:
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# Normalize base64url string (remove padding, add it back)
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padding = "=" * (-len(data) % 4)
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return base64.urlsafe_b64decode(data + padding)
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except TypeError:
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# data is not supported; avoid raising exception
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return None
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def decode_b64_dict(di: dict) -> dict:
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"""Decodes base64 dictionary previously encoded.
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string entries prefixed with `b64:` are targeted
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"""
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di = copy.deepcopy(di)
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for k, v in di.items():
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if not isinstance(v, str) or not v.startswith("b64:"):
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continue
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try:
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parsed_v = base64.b64decode(v[4:])
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parsed_v = json.loads(parsed_v)
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except (
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ValueError,
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TypeError,
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binascii.Error,
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json.decoder.JSONDecodeError,
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):
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# ValueError: the length of altchars is not 2.
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# TypeError: invalid input
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# binascii.Error: not base64 (bad padding)
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# json.decoder.JSONDecodeError: Bad JSON object
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parsed_v = v
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di[k] = parsed_v
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return di
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def encode_b64_dict(di: dict, encoding="utf-8") -> tuple[dict, bool]:
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"""Encodes dictionary entries containing binary types (int, float) into
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base64.
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Final product is always string based values
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"""
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di = copy.deepcopy(di)
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needs_decoding = False
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for k, v in di.items():
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if isinstance(v, str):
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continue
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try:
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encoded = base64.urlsafe_b64encode(json.dumps(v).encode(encoding))
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encoded = f"b64:{encoded.decode(encoding)}"
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needs_decoding = True
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except (ValueError, TypeError):
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# ValueError:
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# - the length of altchars is not 2.
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# TypeError:
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# - json not searializable or
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# - bytes object not passed into urlsafe_b64encode()
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encoded = str(v)
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di[k] = encoded
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return di, needs_decoding
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