def address_spec(self, stream):
'''
Extract a single address spec from a stream of input, always
operates in strict mode.
'''
# sanity check
if stream is None:
raise ParserException('No input provided to parser.')
if isinstance(stream, str) and not is_pure_ascii(stream):
raise ParserException('ASCII string contains non-ASCII chars.')
# to avoid spinning here forever, limit mailbox length
if len(stream) > MAX_ADDRESS_LENGTH:
raise ParserException('Stream length exceeds maximum allowable ' + \
'address length of ' + str(MAX_ADDRESS_LENGTH) + '.')
self.stream = TokenStream(stream)
addr = self._addr_spec()
if addr:
# optional whitespace
self._whitespace()
# if we hit the end of the stream, we have a valid inbox
if self.stream.end_of_stream():
return addr
return None
def _validate_primary(localpart):
# length check
l = len(localpart)
if l < 4 or l > 32:
return False
# no more than one dot (.)
if localpart.count('.') > 1:
return False
# Grammar: local-part -> alpha { [ dot | underscore ] ( alpha | num ) }"
stream = TokenStream(localpart)
# local-part must being with alpha
alpa = stream.get_token(ALPHA)
if alpa is None:
return False
while True:
# optional dot or underscore token
stream.get_token(DOT) or stream.get_token(UNDERSCORE)
# alpha or numeric
alpanum = stream.get_token(ALPHA) or stream.get_token(NUMERIC)
if alpanum is None:
break
# alpha or numeric must be end of stream
if not stream.end_of_stream():
return False
return True
def _validate(localpart):
stream = TokenStream(localpart)
# get the google base
mpart = stream.get_token(GOOGLE_BASE)
if mpart is None:
return False
# optional tags
tgs = _tags(stream)
if not stream.end_of_stream():
return False
return True
def _validate(localpart):
stream = TokenStream(localpart)
# get the gmail base (alpha, num, or dot)
mpart = stream.get_token(GMAIL_BASE)
if mpart is None:
return False
# optional tags
tgs = _tags(stream)
if not stream.end_of_stream():
return False
return True
def _validate_disposable(email_addr):
# Setup for handling EmailAddress type instead of literal string
localpart = email_addr.mailbox
managed = managed_email(email_addr.hostname)
# length check (base + hyphen + keyword)
l = len(localpart)
if l < 3 or l > 65:
return False
# single hyphen
if localpart.count('-') != 1:
return False
# base and keyword length limit
parts = localpart.split('-')
for part in parts:
l = len(part)
if l < 1 or l > 32:
return False
# Grammar: local-part -> alpha { [ alpha | num | underscore ] } hyphen { [ alpha | num ] }
stream = TokenStream(localpart)
# must being with alpha
begin = stream.get_token(ALPHA)
if begin is None and managed:
return False
while True:
# alpha, num, underscore
base = stream.get_token(ALPHANUM) or stream.get_token(UNDERSCORE)
if base is None:
break
# hyphen
hyphen = stream.get_token(HYPHEN)
if hyphen is None:
return False
# keyword must be alpha, num
stream.get_token(ALPHANUM)
if not stream.end_of_stream():
return False
return True
def _validate_disposable(localpart):
# length check (base + hyphen + keyword)
l = len(localpart)
if l < 3 or l > 65:
return False
# single hyphen
if localpart.count('-') != 1:
return False
# base and keyword length limit
parts = localpart.split('-')
for part in parts:
l = len(part)
if l < 1 or l > 32:
return False
# Grammar: local-part -> alpha { [ alpha | num | underscore ] } hyphen { [ alpha | num ] }
stream = TokenStream(localpart)
# must being with alpha
begin = stream.get_token(ALPHA)
if begin is None:
return False
while True:
# alpha, num, underscore
base = stream.get_token(ALPHANUM) or stream.get_token(UNDERSCORE)
if base is None:
break
# hyphen
hyphen = stream.get_token(HYPHEN)
if hyphen is None:
return False
# keyword must be alpha, num
stream.get_token(ALPHANUM)
if not stream.end_of_stream():
return False
return True
def _validate(localpart):
stream = TokenStream(localpart)
# localpart must start with alpha
alpa = stream.get_token(ICLOUD_PREFIX)
if alpa is None:
return False
while True:
# optional dot or underscore
stream.get_token(DOT) or stream.get_token(UNDERSCORE)
base = stream.get_token(ICLOUD_BASE)
if base is None:
break
if not stream.end_of_stream():
return False
return True
def _validate(localpart):
stream = TokenStream(localpart)
while True:
# get alphanumeric portion
mpart = stream.get_token(ALPHANUM)
if mpart is None:
return False
# get optional dot, must be followed by more alphanumerics
mpart = stream.get_token(DOT)
if mpart is None:
break
# optional tags
tgs = _tags(stream)
if not stream.end_of_stream():
return False
return True
def address_list(self, stream):
'''
Extract a mailbox and/or url list from a stream of input, operates in
strict and relaxed modes.
'''
# sanity check
if not stream:
raise ParserException('No input provided to parser.')
if isinstance(stream, str) and not is_pure_ascii(stream):
raise ParserException('ASCII string contains non-ASCII chars.')
# to avoid spinning here forever, limit address list length
if len(stream) > MAX_ADDRESS_LIST_LENGTH:
raise ParserException('Stream length exceeds maximum allowable ' + \
'address list length of ' + str(MAX_ADDRESS_LIST_LENGTH) + '.')
# set stream
self.stream = TokenStream(stream)
if self.strict is True:
return self._address_list_strict()
return self._address_list_relaxed()
def _validate(localpart):
"Grammar: local-part -> alpha { [ dot | underscore ] ( alpha | num ) }"
stream = TokenStream(localpart)
# local-part must being with alpha
alpa = stream.get_token(ALPHA)
if alpa is None:
return False
while True:
# optional dot or underscore token
stream.get_token(DOT) or stream.get_token(UNDERSCORE)
# alpha or numeric
alpanum = stream.get_token(ALPHA) or stream.get_token(NUMERIC)
if alpanum is None:
break
# alpha or numeric must be end of stream
if not stream.end_of_stream():
return False
return True
def _validate_primary(email_addr):
# Setup for handling EmailAddress type instead of literal string
localpart = email_addr.mailbox
managed = managed_email(email_addr.hostname)
# length check
l = len(localpart)
if l < 4 or l > 32:
return False
# no more than one dot (.)
if localpart.count('.') > 1:
return False
# Grammar: local-part -> alpha { [ dot | underscore ] ( alpha | num ) }"
stream = TokenStream(localpart)
# local-part must being with alpha
alpa = stream.get_token(ALPHA)
if alpa is None and managed:
return False
while True:
# optional dot or underscore token
stream.get_token(DOT) or stream.get_token(UNDERSCORE)
# alpha or numeric
alpanum = stream.get_token(ALPHA) or stream.get_token(NUMERIC)
if alpanum is None:
break
# alpha or numeric must be end of stream
if not stream.end_of_stream():
return False
return True
