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https://github.com/bohd4nx/FragmentAPI.git
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bohd4nx
41 lines
1.0 KiB
Python
41 lines
1.0 KiB
Python
import base64
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import logging
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import re
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import string
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logger = logging.getLogger(__name__)
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def clean_decode(payload: str) -> str:
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logger.debug(f"Original payload: {payload}")
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# Decode raw bytes first
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clean = ''.join(c for c in payload if c.isalnum() or c in '+/=')
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clean += '=' * (-len(clean) % 4)
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raw_bytes = base64.b64decode(clean)
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logger.debug(f"Raw decoded bytes: {raw_bytes}")
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# 1. Clean Base64
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s = re.sub(r'[^A-Za-z0-9+/=]', '', payload.strip())
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s += '=' * (-len(s) % 4)
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# 2. Base64 -> bytes
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b = base64.b64decode(s)
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# 3. Decode UTF-8, ignoring invalid bytes
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t = b.decode('utf-8', errors='ignore')
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# 4. Remove binary characters, keep only printable + whitespace
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t = ''.join(c for c in t if c in string.printable or c.isspace())
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# 5. Extract the main text with Ref#
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match = re.search(r'([0-9]*\s*Telegram .*?Ref#[A-Za-z0-9]+)', t, re.S)
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if match:
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result = match.group(1).strip()
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else:
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result = t.strip()
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logger.debug(f"Cleaned result: {result}")
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return result
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