def _get_authors(self, msg):
self.author_addresses = msg.get_addr_header("From")
for header in self.author_addresses:
match_domain = Regex("@([^@]+?)[ \t]*$").search(header)
if match_domain:
domain = match_domain.group(1)
self.author_domains.append(domain.encode())
def check_ratware_envelope_from(self, msg, target=None):
"""Check if envelope-from address is ratware or not."""
to_header = msg.msg.get("To")
envelope_from = msg.sender_address
if not to_header or not envelope_from:
return False
if Regex(r"^SRS\d=").search(envelope_from):
return False
regex = Regex(r"^([^@]+)@(.+)$").search(to_header)
if regex:
user = regex.group(1)
dom = regex.group(2)
if not self.is_domain_valid(dom):
return False
if Regex(r"\b" + dom + "." + user + "@").search(envelope_from):
return True
return False
def check_ratware_name_id(self, msg, target=None):
"""Check if message-id is ratware or not."""
message_id = msg.msg.get("Message-Id")
from_header = msg.msg.get("From")
if not message_id and not from_header:
return False
regex = Regex(r"<[A-Z]{28}\.([^>]+?)>").search(message_id)
if regex:
if Regex(r"\"[^\"]+\"\s*<" + regex.group(1) + ">").search(
from_header):
return True
return False
def check_for_unique_subject_id(self, msg, target=None):
"""Check if in subject appears an unique id"""
subject = "".join(msg.get_decoded_header("Subject"))
id = None
unique_id_re_list = [
r"[-_\.\s]{7,}([-a-z0-9]{4,})$",
r"\s{10,}(?:\S\s)?(\S+)$",
r"\s{3,}[-:\#\(\[]+([-a-z0-9]{4,})[\]\)]+$",
r"\s{3,}[-:\#]([a-z0-9]{5,})$",
r"[\s._]{3,}([^0\s._]\d{3,})$",
r"[\s._]{3,}\[(\S+)\]$",
# (7217vPhZ0-478TLdy5829qicU9-0@26) and similar
r"\(([-\w]{7,}\@\d+)\)$",
r"\b(\d{7,})\s*$",
# stuff at end of line after "!" or "?" is usually an id
r"[!\?]\s*(\d{4,}|\w+(-\w+)+)\s*$",
# 9095IPZK7-095wsvp8715rJgY8-286-28 and similar
# excluding 'Re:', etc and the first word
r"(?:\w{2,3}:\s)?\w+\s+(\w{7,}-\w{7,}(-\w+)*)\s*$",
# #30D7 and similar
r"\s#\s*([a-f0-9]{4,})\s*$"
]
for rgx in unique_id_re_list:
match = Regex(rgx, re.I).search(subject)
if match:
id = match.group()
break
if not id:
return False
comercial_re = Regex(r"(?:item|invoice|order|number|confirmation)"
r".{1,6}%s\s*$" % id, re.X | re.I)
if Regex(r"\d{5,}").search(id) and comercial_re.search(subject):
return False
return True
def send_mail_method(self, sender, receiver, message):
"""
Send mail using smtplib module.
:param sender:
:param receiver:
:param message:
"""
try:
regex = Regex(".*@.*").search(receiver)
domain = regex.group().split('@')[1]
# return value like '0 mail.domain.com.'
mx_domain = self.ctxt.dns.query(domain, 'MX')[0].to_text()
mx_domain = mx_domain.split()[1][:-1]
smtp_obj = smtplib.SMTP()
smtp_obj.connect(mx_domain, 587)
smtp_obj.helo(mx_domain.split('.')[1])
smtp_obj.sendmail(sender, receiver, message)
smtp_obj.quit()
except BaseException:
self.ctxt.log.warning("SpamCop report failed.")
return False
return True