copy spamassassin client code from https://github.com/petermat/spamassassin_client
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app/spamassassin_utils.py
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118
app/spamassassin_utils.py
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"""Inspired from
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https://github.com/petermat/spamassassin_client
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"""
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import socket, select, re, logging
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from io import BytesIO
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divider_pattern = re.compile(br'^(.*?)\r?\n(.*?)\r?\n\r?\n', re.DOTALL)
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first_line_pattern = re.compile(br'^SPAMD/[^ ]+ 0 EX_OK$')
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class SpamAssassin(object):
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def __init__(self, message, timeout=20):
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self.score = None
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self.symbols = None
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# Connecting
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client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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client.settimeout(timeout)
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client.connect(('127.0.0.1', 783))
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# Sending
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client.sendall(self._build_message(message))
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client.shutdown(socket.SHUT_WR)
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# Reading
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resfp = BytesIO()
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while True:
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ready = select.select([client], [], [], timeout)
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if ready[0] is None:
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# Kill with Timeout!
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logging.info('[SpamAssassin] - Timeout ({0}s)!'.format(str(timeout)))
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break
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data = client.recv(4096)
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if data == b'':
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break
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resfp.write(data)
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# Closing
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client.close()
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client = None
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self._parse_response(resfp.getvalue())
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def _build_message(self, message):
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reqfp = BytesIO()
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data_len = str(len(message)).encode()
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reqfp.write(b'REPORT SPAMC/1.2\r\n')
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reqfp.write(b'Content-Length: ' + data_len + b'\r\n')
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reqfp.write(b'User: cx42\r\n\r\n')
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reqfp.write(message)
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return reqfp.getvalue()
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def _parse_response(self, response):
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if response == b'':
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logging.info("[SPAM ASSASSIN] Empty response")
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return None
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match = divider_pattern.match(response)
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if not match:
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logging.error("[SPAM ASSASSIN] Response error:")
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logging.error(response)
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return None
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first_line = match.group(1)
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headers = match.group(2)
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body = response[match.end(0):]
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# Checking response is good
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match = first_line_pattern.match(first_line)
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if not match:
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logging.error("[SPAM ASSASSIN] invalid response:")
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logging.error(first_line)
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return None
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report_list = [s.strip() for s in body.decode('utf-8').strip().split('\n')]
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linebreak_num = report_list.index([s for s in report_list if "---" in s][0])
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tablelists = [s for s in report_list[linebreak_num + 1:]]
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self.report_fulltext = '\n'.join(report_list)
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# join line when current one is only wrap of previous
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tablelists_temp = []
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if tablelists:
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for counter, tablelist in enumerate(tablelists):
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if len(tablelist)>1:
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if (tablelist[0].isnumeric() or tablelist[0] == '-') and (tablelist[1].isnumeric() or tablelist[1] == '.'):
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tablelists_temp.append(tablelist)
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else:
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if tablelists_temp:
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tablelists_temp[-1] += " " + tablelist
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tablelists = tablelists_temp
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# create final json
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self.report_json = dict()
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for tablelist in tablelists:
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wordlist = re.split('\s+', tablelist)
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self.report_json[wordlist[1]] = {'partscore': float(wordlist[0]), 'description': ' '.join(wordlist[1:])}
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headers = headers.decode('utf-8').replace(' ', '').replace(':', ';').replace('/', ';').split(';')
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self.score = float(headers[2])
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def get_report_json(self):
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return self.report_json
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def get_score(self):
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return self.score
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def is_spam(self, level=5):
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return self.score is None or self.score > level
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def get_fulltext(self):
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return self.report_fulltext
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