forked from Disroot/gpg-lacre
Piotr F. Mieszkowski
ddcef93abb
- Fix certificate retrieval. - Store recipients within MailOperation objects. - Log more information. - Fix some warnings.
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
import sys
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import re
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import logging
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# The standard way to encode line-ending in email:
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EOL = "\r\n"
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PGP_INLINE_BEGIN = b"-----BEGIN PGP MESSAGE-----"
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PGP_INLINE_END = b"-----END PGP MESSAGE-----"
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LOG = logging.getLogger(__name__)
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def parse_content_type(content_type):
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"""Analyse Content-Type email header.
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Return a pair: type and sub-type.
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"""
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parts = [p.strip() for p in content_type.split(';')]
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if len(parts) == 1:
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# No additional attributes provided. Use default encoding.
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return (content_type, sys.getdefaultencoding())
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# At least one attribute provided. Find out if any of them is named
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# 'charset' and if so, use it.
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ctype = parts[0]
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encoding = [p for p in parts[1:] if p.startswith('charset=')]
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if encoding:
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eq_idx = encoding[0].index('=')
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return (ctype, encoding[0][eq_idx+1:])
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else:
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return (ctype, sys.getdefaultencoding())
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def parse_delimiter(address: str):
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"""Parse an email with delimiter and topic.
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Return destination emaili and topic as a tuple.
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"""
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withdelim = re.match('^([^\\+]+)\\+([^@]+)@(.*)$', address)
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LOG.debug(f'Parsed email: {withdelim!r}')
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if withdelim:
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return (withdelim.group(1) + '@' + withdelim.group(3), withdelim.group(2))
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else:
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return (address, None)
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def is_pgp_inline(payload) -> bool:
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"""Find out if the payload (bytes) contains PGP/INLINE markers."""
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return PGP_INLINE_BEGIN in payload and PGP_INLINE_END in payload
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