Files
FragmentAPI/pyfragment/utils/decoder.py
T
bohd4nx 733d138fcc feat: Enhance cookie handling and browser support
- Added new exceptions in `exceptions.py` for unsupported browsers and cookie read failures.
- Introduced `get_cookies_from_browser` function in `cookies.py` to extract session cookies from various browsers.
- Modified tests to cover new cookie extraction functionality, including success and failure cases.
- Refactored existing tests to use `patch.object` for mocking client calls.
- Updated dependencies in `pyproject.toml` to include `rookiepy` for cookie extraction.
2026-04-14 00:12:22 +03:00

36 lines
1.1 KiB
Python

import base64
from ton_core import Cell
from pyfragment.types import ParseError
def clean_decode(payload: str) -> str:
"""Decode a base64-encoded BOC payload to a plain-text comment string.
Fragment transaction payloads are BOC-serialised TVM cells. This function
base64-decodes the payload, parses the cell, skips the 32-bit op-code
prefix, and reads the snake-encoded UTF-8 comment.
Args:
payload: Base64url-encoded BOC string (padding is added automatically).
Returns:
Decoded comment string, or ``""`` for an empty payload.
Raises:
ParseError: If the payload cannot be decoded or parsed.
"""
s = payload.strip()
if not s:
return ""
s += "=" * (-len(s) % 4)
try:
boc = base64.b64decode(s)
cell = Cell.one_from_boc(boc)
sl = cell.begin_parse()
sl.load_uint(32) # op code — always 0 for text comment
return sl.load_snake_string().strip()
except Exception as exc:
raise ParseError(ParseError.UNPARSEABLE.format(context="payload decode", exc=exc)) from exc