Andrew's git / logparse.git /
8b58b0c45477df66609f2d334bb2539e6d57202f
   1#
   2#   sshd.py
   3#   
   4#   Find number of ssh logins and authorised users
   5#
   6
   7import re
   8from systemd import journal
   9
  10from logparse.formatting import *
  11from logparse.util import resolve
  12from logparse import config
  13
  14import logging
  15logger = logging.getLogger(__name__)
  16
  17def parse_log():
  18
  19    logger.debug("Starting sshd section")
  20    section = Section("ssh")
  21
  22    j = journal.Reader()
  23    j.this_boot()
  24    j.log_level(journal.LOG_DEBUG)
  25    j.add_match(_COMM="sshd")
  26    
  27    messages = [entry["MESSAGE"] for entry in j if "MESSAGE" in entry]
  28
  29    login_data = Data("successful", [])
  30    invalid_data = Data("invalid", [])
  31    failed_data = Data("failed", [])
  32
  33    for msg in messages:
  34
  35        if "Accepted publickey" in msg:
  36            entry = re.search('^.*publickey\sfor\s(\w*)\sfrom\s(\S*)', msg)  # [('user', 'ip')]
  37            user = entry.group(1)
  38            ip = entry.group(2)
  39
  40            userhost = user + '@' + resolve(ip, fqdn=config.prefs['sshd']['resolve-domains'])
  41            login_data.items.append(userhost)
  42
  43        elif "Connection closed by authenticating user root" in msg:
  44            entry = re.search('^.*Connection closed by authenticating user (\S+) (\S+)', msg)  # [('user', 'ip')]
  45            user = entry.group(1)
  46            ip = entry.group(2)
  47
  48            userhost = user + '@' + resolve(ip, fqdn=config.prefs['sshd']['resolve-domains'])
  49            failed_data.items.append(userhost)
  50
  51        elif "Invalid user" in msg:
  52            entry = re.search('^.*Invalid user (\S+) from (\S+).*', msg)  # [('user', 'ip')]
  53            user = entry.group(1)
  54            ip = entry.group(2)
  55
  56            userhost = user + '@' + resolve(ip, fqdn=config.prefs['sshd']['resolve-domains'])
  57            invalid_data.items.append(userhost)
  58
  59    login_data.subtitle = plural("successful login", len(login_data.items)) + " from"
  60    login_data.orderbyfreq()
  61    login_data.truncl(config.prefs['maxlist'])
  62    
  63    invalid_data.subtitle = plural("attempted login", len(invalid_data.items))
  64    invalid_data.orderbyfreq()
  65    invalid_data.subtitle +=  plural(" from invalid user", len(invalid_data.items), False)
  66    invalid_data.truncl(config.prefs['maxlist'])
  67
  68    failed_data.subtitle = plural("failed login", len(failed_data.items)) + " from"
  69    failed_data.orderbyfreq()
  70    failed_data.truncl(config.prefs['maxlist'])
  71
  72    section.append_data(login_data)
  73    section.append_data(invalid_data)
  74    section.append_data(failed_data)
  75
  76    logger.info("Finished sshd section")
  77    return section