diff options
Diffstat (limited to 'python.d/fail2ban.chart.py')
| -rw-r--r-- | python.d/fail2ban.chart.py | 97 |
1 files changed, 69 insertions, 28 deletions
diff --git a/python.d/fail2ban.chart.py b/python.d/fail2ban.chart.py index 2d80282c..c7d24e8c 100644 --- a/python.d/fail2ban.chart.py +++ b/python.d/fail2ban.chart.py @@ -4,16 +4,18 @@ from base import LogService from re import compile + try: from itertools import filterfalse except ImportError: from itertools import ifilterfalse as filterfalse from os import access as is_accessible, R_OK +from os.path import isdir +from glob import glob priority = 60000 retries = 60 -regex = compile(r'([A-Za-z-]+\]) enabled = ([a-z]+)') - +REGEX = compile(r'\[([A-Za-z-_]+)][^\[\]]*?(?<!# )enabled = true') ORDER = ['jails_group'] @@ -23,22 +25,17 @@ class Service(LogService): self.order = ORDER self.log_path = self.configuration.get('log_path', '/var/log/fail2ban.log') self.conf_path = self.configuration.get('conf_path', '/etc/fail2ban/jail.local') - self.default_jails = ['ssh'] + self.conf_dir = self.configuration.get('conf_dir', '') try: self.exclude = self.configuration['exclude'].split() except (KeyError, AttributeError): self.exclude = [] - def _get_data(self): """ Parse new log lines :return: dict """ - - # If _get_raw_data returns empty list (no new lines in log file) we will send to Netdata this - self.data = {jail: 0 for jail in self.jails_list} - try: raw = self._get_raw_data() if raw is None: @@ -50,42 +47,86 @@ class Service(LogService): # Fail2ban logs looks like # 2016-12-25 12:36:04,711 fail2ban.actions[2455]: WARNING [ssh] Ban 178.156.32.231 - self.data = dict( + data = dict( zip( self.jails_list, [len(list(filterfalse(lambda line: (jail + '] Ban') not in line, raw))) for jail in self.jails_list] )) + for jail in data: + self.data[jail] += data[jail] + return self.data def check(self): - + # Check "log_path" is accessible. # If NOT STOP plugin if not is_accessible(self.log_path, R_OK): - self.error('Cannot access file %s' % (self.log_path)) + self.error('Cannot access file %s' % self.log_path) return False + jails_list = list() + + if self.conf_dir: + dir_jails, error = parse_conf_dir(self.conf_dir) + jails_list.extend(dir_jails) + if not dir_jails: + self.error(error) + + if self.conf_path: + path_jails, error = parse_conf_path(self.conf_path) + jails_list.extend(path_jails) + if not path_jails: + self.error(error) - # Check "conf_path" is accessible. - # If "conf_path" is accesible try to parse it to find enabled jails - if is_accessible(self.conf_path, R_OK): - with open(self.conf_path, 'rt') as jails_conf: - jails_list = regex.findall(' '.join(jails_conf.read().split())) - self.jails_list = [jail[:-1] for jail, status in jails_list if status == 'true'] - else: - self.jails_list = [] - self.error('Cannot access jail.local file %s.' % (self.conf_path)) - # If for some reason parse failed we still can START with default jails_list. - self.jails_list = [jail for jail in self.jails_list if jail not in self.exclude]\ - if self.jails_list else self.default_jails + self.jails_list = list(set(jails_list) - set(self.exclude)) or ['ssh'] + self.data = dict([(jail, 0) for jail in self.jails_list]) self.create_dimensions() - self.info('Plugin succefully started. Jails: %s' % (self.jails_list)) + self.info('Plugin successfully started. Jails: %s' % self.jails_list) return True def create_dimensions(self): - self.definitions = {'jails_group': - {'options': - [None, "Jails ban statistics", "bans/s", 'Jails', 'jail.ban', 'line'], 'lines': []}} + self.definitions = { + 'jails_group': {'options': [None, "Jails ban statistics", "bans/s", 'jails', 'jail.ban', 'line'], + 'lines': []}} for jail in self.jails_list: - self.definitions['jails_group']['lines'].append([jail, jail, 'absolute']) + self.definitions['jails_group']['lines'].append([jail, jail, 'incremental']) + + +def parse_conf_dir(conf_dir): + if not isdir(conf_dir): + return list(), '%s is not a directory' % conf_dir + + jail_local = list(filter(lambda local: is_accessible(local, R_OK), glob(conf_dir + '/*.local'))) + jail_conf = list(filter(lambda conf: is_accessible(conf, R_OK), glob(conf_dir + '/*.conf'))) + + if not (jail_local or jail_conf): + return list(), '%s is empty or not readable' % conf_dir + + # According "man jail.conf" files could be *.local AND *.conf + # *.conf files parsed first. Changes in *.local overrides configuration in *.conf + if jail_conf: + jail_local.extend([conf for conf in jail_conf if conf[:-5] not in [local[:-6] for local in jail_local]]) + jails_list = list() + for conf in jail_local: + with open(conf, 'rt') as f: + raw_data = f.read() + + data = ' '.join(raw_data.split()) + jails_list.extend(REGEX.findall(data)) + jails_list = list(set(jails_list)) + + return jails_list, 'can\'t locate any jails in %s. Default jail is [\'ssh\']' % conf_dir + + +def parse_conf_path(conf_path): + if not is_accessible(conf_path, R_OK): + return list(), '%s is not readable' % conf_path + + with open(conf_path, 'rt') as jails_conf: + raw_data = jails_conf.read() + + data = raw_data.split() + jails_list = REGEX.findall(' '.join(data)) + return jails_list, 'can\'t locate any jails in %s. Default jail is [\'ssh\']' % conf_path |