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__pycache__ dir drwxr-xr-x 2024-06-09 22:18 R D
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  __init__.py 1.723 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  _encoded_words.py 8.341 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  _header_value_parser.py 104.799 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  _parseaddr.py 17.403 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  _policybase.py 14.72 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  architecture.rst 9.337 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  base64mime.py 3.468 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  charset.py 16.717 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  contentmanager.py 10.34 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  encoders.py 1.736 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  errors.py 3.647 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  feedparser.py 22.268 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  generator.py 19.721 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  header.py 23.527 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  headerregistry.py 20.331 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  iterators.py 2.079 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  message.py 46.903 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  parser.py 4.92 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  policy.py 10.272 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  quoprimime.py 9.633 KB -rw-r--r-- 2024-04-02 08:25 R E G D
  utils.py 13.128 KB -rw-r--r-- 2024-04-02 08:25 R E G D
REQUEST EXIT
# Copyright (C) 2001-2007 Python Software Foundation # Author: Barry Warsaw # Contact: email-sig@python.org """Basic message object for the email package object model.""" __all__ = ['Message', 'EmailMessage'] import binascii import re import quopri from io import BytesIO, StringIO # Intrapackage imports from email import utils from email import errors from email._policybase import Policy, compat32 from email import charset as _charset from email._encoded_words import decode_b Charset = _charset.Charset SEMISPACE = '; ' # Regular expression that matches `special' characters in parameters, the # existence of which force quoting of the parameter value. tspecials = re.compile(r'[ \(\)<>@,;:\\"/\[\]\?=]') def _splitparam(param): # Split header parameters. BAW: this may be too simple. It isn't # strictly RFC 2045 (section 5.1) compliant, but it catches most headers # found in the wild. We may eventually need a full fledged parser. # RDM: we might have a Header here; for now just stringify it. a, sep, b = str(param).partition(';') if not sep: return a.strip(), None return a.strip(), b.strip() def _formatparam(param, value=None, quote=True): """Convenience function to format and return a key=value pair. This will quote the value if needed or if quote is true. If value is a three tuple (charset, language, value), it will be encoded according to RFC2231 rules. If it contains non-ascii characters it will likewise be encoded according to RFC2231 rules, using the utf-8 charset and a null language. """ if value is not None and len(value) > 0: # A tuple is used for RFC 2231 encoded parameter values where items # are (charset, language, value). charset is a string, not a Charset # instance. RFC 2231 encoded values are never quoted, per RFC. if isinstance(value, tuple): # Encode as per RFC 2231 param += '*' value = utils.encode_rfc2231(value[2], value[0], value[1]) return '%s=%s' % (param, value) else: try: value.encode('ascii') except UnicodeEncodeError: param += '*' value = utils.encode_rfc2231(value, 'utf-8', '') return '%s=%s' % (param, value) # BAW: Please check this. I think that if quote is set it should # force quoting even if not necessary. if quote or tspecials.search(value): return '%s="%s"' % (param, utils.quote(value)) else: return '%s=%s' % (param, value) else: return param def _parseparam(s): # RDM This might be a Header, so for now stringify it. s = ';' + str(s) plist = [] while s[:1] == ';': s = s[1:] end = s.find(';') while end > 0 and (s.count('"', 0, end) - s.count('\\"', 0, end)) % 2: end = s.find(';', end + 1) if end < 0: end = len(s) f = s[:end] if '=' in f: i = f.index('=') f = f[:i].strip().lower() + '=' + f[i+1:].strip() plist.append(f.strip()) s = s[end:] return plist def _unquotevalue(value): # This is different than utils.collapse_rfc2231_value() because it doesn't # try to convert the value to a unicode. Message.get_param() and # Message.get_params() are both currently defined to return the tuple in # the face of RFC 2231 parameters. if isinstance(value, tuple): return value[0], value[1], utils.unquote(value[2]) else: return utils.unquote(value) def _decode_uu(encoded): """Decode uuencoded data.""" decoded_lines = [] encoded_lines_iter = iter(encoded.splitlines()) for line in encoded_lines_iter: if line.startswith(b"begin "): mode, _, path = line.removeprefix(b"begin ").partition(b" ") try: int(mode, base=8) except ValueError: continue else: break else: raise ValueError("`begin` line not found") for line in encoded_lines_iter: if not line: raise ValueError("Truncated input") elif line.strip(b' \t\r\n\f') == b'end': break try: decoded_line = binascii.a2b_uu(line) except binascii.Error: # Workaround for broken uuencoders by /Fredrik Lundh nbytes = (((line[0]-32) & 63) * 4 + 5) // 3 decoded_line = binascii.a2b_uu(line[:nbytes]) decoded_lines.append(decoded_line) return b''.join(decoded_lines) class Message: """Basic message object. A message object is defined as something that has a bunch of RFC 2822 headers and a payload. It may optionally have an envelope header (a.k.a. Unix-From or From_ header). If the message is a container (i.e. a multipart or a message/rfc822), then the payload is a list of Message objects, otherwise it is a string. Message objects implement part of the `mapping' interface, which assumes there is exactly one occurrence of the header per message. Some headers do in fact appear multiple times (e.g. Received) and for those headers, you must use the explicit API to set or get all the headers. Not all of the mapping methods are implemented. """ def __init__(self, policy=compat32): self.policy = policy self._headers = [] self._unixfrom = None self._payload = None self._charset = None # Defaults for multipart messages self.preamble = self.epilogue = None self.defects = [] # Default content type self._default_type = 'text/plain' def __str__(self): """Return the entire formatted message as a string. """ return self.as_string() def as_string(self, unixfrom=False, maxheaderlen=0, policy=None): """Return the entire formatted message as a string. Optional 'unixfrom', when true, means include the Unix From_ envelope header. For backward compatibility reasons, if maxheaderlen is not specified it defaults to 0, so you must override it explicitly if you want a different maxheaderlen. 'policy' is passed to the Generator instance used to serialize the message; if it is not specified the policy associated with the message instance is used. If the message object contains binary data that is not encoded according to RFC standards, the non-compliant data will be replaced by unicode "unknown character" code points. """ from email.generator import Generator policy = self.policy if policy is None else policy fp = StringIO() g = Generator(fp, mangle_from_=False, maxheaderlen=maxheaderlen, policy=policy) g.flatten(self, unixfrom=unixfrom) return fp.getvalue() def __bytes__(self): """Return the entire formatted message as a bytes object. """ return self.as_bytes() def as_bytes(self, unixfrom=False, policy=None): """Return the entire formatted message as a bytes object. Optional 'unixfrom', when true, means include the Unix From_ envelope header. 'policy' is passed to the BytesGenerator instance used to serialize the message; if not specified the policy associated with the message instance is used. """ from email.generator import BytesGenerator policy = self.policy if policy is None else policy fp = BytesIO() g = BytesGenerator(fp, mangle_from_=False, policy=policy) g.flatten(self, unixfrom=unixfrom) return fp.getvalue() def is_multipart(self): """Return True if the message consists of multiple parts.""" return isinstance(self._payload, list) # # Unix From_ line # def set_unixfrom(self, unixfrom): self._unixfrom = unixfrom def get_unixfrom(self): return self._unixfrom # # Payload manipulation. # def attach(self, payload): """Add the given payload to the current payload. The current payload will always be a list of objects after this method is called. If you want to set the payload to a scalar object, use set_payload() instead. """ if self._payload is None: self._payload = [payload] else: try: self._payload.append(payload) except AttributeError: raise TypeError("Attach is not valid on a message with a" " non-multipart payload") def get_payload(self, i=None, decode=False): """Return a reference to the payload. The payload will either be a list object or a string. If you mutate the list object, you modify the message's payload in place. Optional i returns that index into the payload. Optional decode is a flag indicating whether the payload should be decoded or not, according to the Content-Transfer-Encoding header (default is False). When True and the message is not a multipart, the payload will be decoded if this header's value is `quoted-printable' or `base64'. If some other encoding is used, or the header is missing, or if the payload has bogus data (i.e. bogus base64 or uuencoded data), the payload is returned as-is. If the message is a multipart and the decode flag is True, then None is returned. """ # Here is the logic table for this code, based on the email5.0.0 code: # i decode is_multipart result # ------ ------ ------------ ------------------------------ # None True True None # i True True None # None False True _payload (a list) # i False True _payload element i (a Message) # i False False error (not a list) # i True False error (not a list) # None False False _payload # None True False _payload decoded (bytes) # Note that Barry planned to factor out the 'decode' case, but that # isn't so easy now that we handle the 8 bit data, which needs to be # converted in both the decode and non-decode path. if self.is_multipart(): if decode: return None if i is None: return self._payload else: return self._payload[i] # For backward compatibility, Use isinstance and this error message # instead of the more logical is_multipart test. if i is not None and not isinstance(self._payload, list): raise TypeError('Expected list, got %s' % type(self._payload)) payload = self._payload # cte might be a Header, so for now stringify it. cte = str(self.get('content-transfer-encoding', '')).lower() # payload may be bytes here. if not decode: if isinstance(payload, str) and utils._has_surrogates(payload): try: bpayload = payload.encode('ascii', 'surrogateescape') try: payload = bpayload.decode(self.get_param('charset', 'ascii'), 'replace') except LookupError: payload = bpayload.decode('ascii', 'replace') except UnicodeEncodeError: pass return payload if isinstance(payload, str): try: bpayload = payload.encode('ascii', 'surrogateescape') except UnicodeEncodeError: # This won't happen for RFC compliant messages (messages # containing only ASCII code points in the unicode input). # If it does happen, turn the string into bytes in a way # guaranteed not to fail. bpayload = payload.encode('raw-unicode-escape') if cte == 'quoted-printable': return quopri.decodestring(bpayload) elif cte == 'base64': # XXX: this is a bit of a hack; decode_b should probably be factored # out somewhere, but I haven't figured out where yet. value, defects = decode_b(b''.join(bpayload.splitlines())) for defect in defects: self.policy.handle_defect(self, defect) return value elif cte in ('x-uuencode', 'uuencode', 'uue', 'x-uue'): try: return _decode_uu(bpayload) except ValueError: # Some decoding problem. return bpayload if isinstance(payload, str): return bpayload return payload def set_payload(self, payload, charset=None): """Set the payload to the given value. Optional charset sets the message's default character set. See set_charset() for details. """ if hasattr(payload, 'encode'): if charset is None: self._payload = payload return if not isinstance(charset, Charset): charset = Charset(charset) payload = payload.encode(charset.output_charset, 'surrogateescape') if hasattr(payload, 'decode'): self._payload = payload.decode('ascii', 'surrogateescape') else: self._payload = payload if charset is not None: self.set_charset(charset) def set_charset(self, charset): """Set the charset of the payload to a given character set. charset can be a Charset instance, a string naming a character set, or None. If it is a string it will be converted to a Charset instance. If charset is None, the charset parameter will be removed from the Content-Type field. A