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script.py
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script.py
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import os
import stat
import time
import json
import zipfile
import logging
from urllib.parse import urljoin
from urllib3 import disable_warnings
from urllib3.exceptions import (
NewConnectionError, MaxRetryError, InsecureRequestWarning)
import requests
import opencrypt
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import (
StaleElementReferenceException, TimeoutException)
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from bs4 import BeautifulSoup as BSoup
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
handler = logging.StreamHandler()
handler.setLevel(logging.INFO)
handler.setFormatter(logging.Formatter('%(asctime)s: %(message)s'))
logger.addHandler(handler)
disable_warnings(InsecureRequestWarning)
def _exit(code, message):
return {'statusCode': code, 'body': json.dumps({
'error' if code >= 300 else 'success': message})}
def read_config():
if not os.environ.get('CONFIG_FILE'):
return _exit(404, 'No CONFIG_FILE environment variable exists.')
config_file = os.environ['CONFIG_FILE']
if config_file.startswith(('http', 'https', 'ftp')):
logger.info('Config file prefix tells program to fetch it online.')
logger.info('Fetching config file: %s' % (config_file))
response = requests.get(config_file)
if response.status_code < 400:
ciphertext = response.content
else:
return _exit(400, 'Could not fetch config file: '
'%s' % (response))
else:
logger.info('Config file prefix tells program to search ' +
'for it on filesystem.')
if not os.path.isfile(config_file):
return _exit(404, 'No Config file on filesystem: '
'%s' % (config_file))
ciphertext = open(config_file, 'rb').read()
content = opencrypt.decrypt_file(
ciphertext, write_to_file=False, is_ciphertext=True)
try:
config = json.loads(content)
validation = validate_config(config)
if validation and validation.get('statusCode'):
return validation
return config
except json.JSONDecodeError as exc:
return _exit(400, str(exc))
def validate_config(config):
if not config.get('usm'):
return _exit(404, 'No `usm` field defined in config.')
for key in ['host_url', 'username', 'password']:
if not config['usm'].get(key):
return _exit(404, 'No `%s` field defined in config.' % (key))
if not config.get('selenium_host'):
return _exit(404, 'No `selenium_host` field defined in config.')
for key in ['api_url', 'client_id', 'client_secret']:
if not config['usm'].get(key):
logger.info('`%s` field not defined. Fetching of sensor '
'events via USM API will be skipped', key)
break
if not config['selenium_host'].startswith(('http', 'https')):
config['selenium_host'] = 'http://127.0.0.1:4444/wd/hub'
def get_auth_token(config):
usm = config['usm']
url = urljoin(usm.get('api_url'), 'oauth/token')
logger.info('Retrieving OAUTH token for USM...')
res = requests.post(url, data={'grant_type': 'client_credentials'},
auth=(usm.get('client_id'), usm.get('client_secret')))
if res.status_code < 300:
return res.json().get('access_token')
logger.info('Unexpected response returned: %s', res)
return None
def get_usm_events(config, token, sensors):
usm = config['usm']
curr_time = str(time.time()).replace('.', str())[:13]
prev_time = str(int(curr_time) - (int(usm.get(
'sensor_interval', '60')) * 60 * 1000))
params = ['sort=timestamp_occured,desc',
'timestamp_occured_gte=' + prev_time,
'size=3']
for sensor in sensors:
if not sensor.get('id'):
continue
url = urljoin(usm.get('api_url'), 'events?%s&sensor_uuid=%s' % (
'&'.join(params), sensor.get('id')))
logger.info('Retrieving USM sensor events [%s]...', sensor.get('name'))
res = requests.get(url, headers={'Authorization': 'Bearer ' + token})
if res.status_code < 300:
sensor['events'] = {
'timestamps': [
x.get('timestamp_received_iso8601') for x in
res.json().get('_embedded', dict()).get(
'eventResourceList', list())
]}
sensor['events']['count'] = res.json().get(
'page', dict()).get('totalElements', 0)
logger.info('[%d] events fetched from '
'USM.', len(sensor['events']))
else:
logger.info('Unexpected response returned: %s', res)
def push_slack_text(config, data):
slack_text = str()
logger.info(str())
if not config.get('slack_hooks', list()):
logger.info('No webhook is specified. Skipping slack push.')
return slack_text
if not data:
logger.info('No data found. Skipping slack push.')
return slack_text
disconns = [
x for x in data['sensors']
if 'connection lost' in x.get('text', str()).lower()
if x.get('ip') not in config.get('whitelist', list())
if x.get('name') not in config.get('whitelist', list())
]
logger.info('[%d] sensors are found to be disconnected.', len(disconns))
tick, cross = ':heavy_check_mark:', ':heavy_multiplication_x:'
status_text = data.get('status', dict()).get('text', str())
notices_text = data.get('status', dict()).get('notices', str())
_text = str()
if status_text and 'all systems operational' not in status_text:
_text = status_text.replace('Status: ', str()).split('\n')[0]
if not notices_text.startswith('0'):
_text += ' (%s)\n\n' % (notices_text) \
if _text else '(%s)\n\n' % (notices_text)
else:
_text += '\n\n' if _text else str()
slack_text += '*Status:*\n> %s' % (_text) if _text else str()
if not config.get('storage') and data.get('storage'):
slack_text += '*Storage:*\n> Consumed: *%s / %s*\n' % (
data['storage']['consumed'], data['storage']['total'])
elif not data.get('storage'):
slack_text += '*Storage:*\n' \
'> %s Details could not be retrieved.\n' % (cross)
logger.info('Pushing status and storage details to slack...')
alert_on_slack(config, slack_text)
if not data.get('sensors'):
slack_text += '*Sensors:*\n' \
'> %s Details could not be retrieved.\n' % (cross)
slack_text = str()
for sensor in data['sensors']:
if not(sensor.get('name') or sensor.get('ip')):
continue
if sensor.get('name') in config.get('whitelist', list()) or \
sensor.get('ip') in config.get('whitelist', list()):
logger.info('Whitelisted sensor (%s).', sensor.get('name'))
continue
slack_text += '\n*(%s)* %s\n' % (
sensor.get('name', 'N/A'), sensor.get('ip', 'N/A'))
if 'connection lost' in sensor.get('text', str()).lower():
slack_text += '> \t%s %s\n' % (cross, sensor['text'])
if sensor.get('events'):
slack_text += '> \t*Events:*\n> \t\tLatest: *`%s`*\n' \
'> \t\tCount: *`%s`*\n' % ((sensor.get('events', dict()).get(
'timestamps', list()) or ['None'])[-1], sensor.get(
'events', dict()).get('count', 0))
if sensor.get('network'):
slack_text += '> \t*Network:*\n'
for desc, status in sensor.get('network').items():
if 'success' not in status.lower():
slack_text += '> \t\t%s %s.\n' % (cross, desc)
else:
slack_text += '> \t*Network:*\n' \
'> \t\t%s Details could not be retrieved.\n' % (cross)
if sensor.get('syslog'):
slack_text += '> \t*Syslog:*\n'
for entry in sensor.get('syslog'):
if not entry:
continue
symbol = tick if entry.get('packets') is not '0' else cross
slack_text += '> \t\t%s *%s* packets.\t*`%s:%s`*\n' % (
symbol, entry.get('packets'),
entry.get('protocol', str()).split(' ')[-1],
entry.get('port'))
else:
slack_text += '> \t*Syslog:*\n' \
'> \t\t%s Details could not be retrieved.\n' % (cross)
logger.info('Pushing sensor (%s) details to '
'slack...', sensor.get('name'))
alert_on_slack(config, slack_text)
def alert_on_slack(config, text):
if not text:
logger.info('No text to push to slack.')
return
for url in config['slack_hooks']:
response, _count = (None, 0)
while not response and _count < 5:
try:
response = requests.post(url, json={'text': text})
except:
logger.info('Could not send slack request. ' +
'Retrying after 10 secs...')
time.sleep(10)
_count += 1
if not response:
continue
if response.status_code == 200:
logger.info('Pushed message to slack successfully.')
else:
logger.info('Could not push message to slack: <(%s) %s>' % (
response.status_code, response.content.decode('utf8')))
def do_login(config, driver):
logger.info('Logging into the system...')
email_elem = driver.find_element_by_css_selector(
'input[placeholder="EMAIL"]')
email_elem.send_keys(config['usm']['username'])
password_elem = driver.find_element_by_css_selector(
'input[placeholder="PASSWORD"]')
password_elem.send_keys(config['usm']['password'])
login_elem = driver.find_element_by_css_selector('button#btn-login')
login_elem.click()
def wait_for_element(driver, selector, timeout=30,
state='visible', count=1, wait=0):
if count > 3:
return {'exit': True}
try:
if state == 'visible':
WebDriverWait(driver, timeout).until(
EC.visibility_of_element_located((
By.CSS_SELECTOR, selector)))
elif state == 'invisible':
WebDriverWait(driver, timeout).until(
EC.invisibility_of_element_located((
By.CSS_SELECTOR, selector)))
elif state == 'clickable':
WebDriverWait(driver, timeout).until(
EC.element_to_be_clickable((
By.CSS_SELECTOR, selector)))
time.sleep(wait) if wait else None
except TimeoutException:
logger.info('Browser timed out while waiting...')
return wait_for_element(
driver, selector, timeout=timeout,
state=state, count=count+1)
def get_sensors_status(config, driver):
sensors = list()
sensor_link = driver.find_element_by_css_selector('a#nav-link-sensors')
logger.info('Visting sensors page link...')
driver.get(sensor_link.get_attribute('href'))
logger.info('Waiting for sensors page...')
res = wait_for_element(driver, '#table-sensors-list', timeout=15)
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
return sensors
logger.info('Finding disconnected sensors from page...')
soup = BSoup(driver.page_source, 'html.parser')
for row in soup.select('#table-sensors-list tr.result-row'):
_id = row.get('id').replace('result-row-', str())
text = row.select('.result-column-sensor-status')[0] \
.get_text().strip('\n').split('\n')[0].strip()
ip = row.select('.result-column-sensor-ip')[0] \
.get_text().strip('\n').split('\n')[0].strip()
name = row.select('.result-column-sensor-name')[0] \
.get_text().strip('\n').split('\n')[0]
sensors.append({'id': _id, 'name': name, 'text': text, 'ip': ip})
return sensors
def get_system_status(config, driver):
status = dict()
logger.info('Waiting for intercom container to be clickable...')
wait_for_element(driver, '#nav-tab-container-intercom',
state='clickable', wait=5)
driver.find_element_by_css_selector('#nav-tab-container-intercom').click()
logger.info('Waiting for notification bubbles...')
selector = '.counter-nav-icon-counter .counter-nav-icon-counter-circle'
res = wait_for_element(driver, selector, count=3)
if res and res.get('exit'):
logger.info('No notice bubbles found.')
else:
notice_bubble = driver.find_element_by_css_selector(selector)
status['notices'] = '%s notifications.' % (notice_bubble.text)
logger.info('Waiting for intercom to appear...')
res = wait_for_element(
driver, 'iframe[title="Intercom live chat messenger"]', timeout=5)
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
iframe = driver.find_element_by_css_selector(
'iframe[title="Intercom live chat messenger"]')
driver.switch_to.frame(iframe)
logger.info('Switched to intercom iframe.')
selector = '.intercom-home-screen-messenger-card' \
'.intercom-home-screen-messenger-card-0 ' \
'.intercom-messenger-card-list-item-text-title'
logger.info('Waiting for status element...')
res = wait_for_element(driver, selector, timeout=10)
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
status['text'] = 'Could not retrieve status from USM.'
else:
status['text'] = driver.find_element_by_css_selector(selector).text
driver.switch_to.default_content()
logger.info('Switched back to default content.')
return status
def get_subscription_details(config, driver):
sub_link = driver.find_element_by_id('nav-link-my-subscription')
driver.get(sub_link.get_attribute('href'))
storage = dict()
logger.info('Waiting for subscription page...')
res = wait_for_element(driver, '#status-my-subscription', timeout=20)
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
return storage
else:
logger.info('Waiting for subscription data to load...')
res = wait_for_element(
driver, 'loading #loading', timeout=15, state='invisible')
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
return storage
else:
storage['total'] = \
driver.find_element_by_css_selector(
'.free-space:nth-child(2) span.ng-binding:last-child') \
.text
storage['consumed'] = \
driver.find_element_by_css_selector(
'.free-space:nth-child(2) span.ng-binding:first-child') \
.text
storage['remaining'] = \
driver.find_element_by_css_selector(
'.free-space:nth-child(4) span.ng-binding:first-child') \
.text
storage['projected'] = \
driver.find_element_by_css_selector(
'.free-space:nth-child(6) span.ng-binding:first-child') \
.text
return storage
def populate_sensor_details(config, driver, sensors):
for sensor in sensors:
if not sensor.get('id') or sensor.get(
'text', str()).lower() in ['connection lost']:
continue
if sensor.get('name') in config.get('whitelist', list()):
continue
url = config['usm']['host_url'] + \
'/#/sensor/%s' % (sensor.get('id'))
logger.info('Visiting sensor page [%s]...', sensor.get('name'))
driver.get(url)
sensor['network'], sensor['syslog'] = dict(), list()
logger.info('Waiting for network table...')
res = wait_for_element(
driver, '.av-table-striped.checks', timeout=10)
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
for row in driver.find_elements_by_css_selector(
'.av-table-striped.checks tr.ng-scope'):
desc = row.find_element_by_css_selector('.ng-binding').text
status = row.find_element_by_css_selector('td img.icon')
status = status.get_attribute('src') if status else 'N/A'
status = 'success' if 'success' in status else \
'error' if 'error' in status else status
sensor['network'][desc] = status
syslog_tab = driver.find_element_by_id('link-syslog-configuration')
logger.info('Waiting for syslog tab to be clickable...')
wait_for_element(driver, '#link-syslog-configuration',
state='clickable', wait=5)
try:
syslog_tab.click()
except:
logger.info('Could not click syslog tab.')
logger.info('Waiting for syslog table...')
res = wait_for_element(
driver, '.av-table-striped.syslog', timeout=10)
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
for row in driver.find_elements_by_css_selector(
'.av-table-striped.syslog tr.ng-scope'):
protocol = row.find_element_by_id('txt-protocol').text
ip = row.find_element_by_id('txt-management').text
try:
port = int(row.find_element_by_id('txt-port').text)
except:
port = 0
packets = row.find_element_by_id('txt-packets').text
sensor['syslog'].append({
'ip': ip, 'protocol': protocol,
'port': port, 'packets': packets})
def main(event, context):
config = read_config()
if config.get('statusCode'):
logger.info(config)
return config
logger.info(str())
options = Options()
options.headless = True
options.add_argument('--no-sandbox')
options.add_argument('--disable-dev-shm-usage')
options.add_argument('--window-size=1920x1080')
try:
logger.info('Connecting to selenium: %s', config['selenium_host'])
driver = webdriver.Remote(
config['selenium_host'],
desired_capabilities={'browserName': 'chrome'},
options=options)
except (NewConnectionError, MaxRetryError) as exc:
message = 'Could not connect to remote selenium ' \
'server: %s' % (config['selenium_host'])
alert_on_slack(config, '> *Critical:* ' + message)
return _exit(500, str(exc))
try:
logger.info('Visiting url: %s', config['usm']['host_url'])
driver.get(config['usm']['host_url'])
if 'AlienVault' not in driver.title:
message = 'Browser could not retrieve the ' \
'main page of USM.'
logger.info(message)
alert_on_slack(config, '> ' + message)
return _exit(400, 'Unexpected HTML page title at: %s' % (
config['usm_host_url']))
do_login(config, driver)
logger.info('Waiting for dashboard...')
res = wait_for_element(driver, 'av-header #header')
if res and res.get('exit'):
message = 'Giving up after 3rd retry ' \
'of waiting for element.'
logger.info(message)
alert_on_slack(config, '> ' + message)
data = dict()
data['status'] = get_system_status(config, driver)
data['storage'] = get_subscription_details(config, driver)
data['sensors'] = get_sensors_status(config, driver)
populate_sensor_details(config, driver, data['sensors'])
driver.close()
except Exception as exc:
driver.close()
logger.info('Exception occured in code.')
alert_on_slack(config, '> Unexpected exception occured.\n'
'```%s```' % (str(exc)))
logger.info(str(exc))
return _exit(500, str(exc))
try:
token = get_auth_token(config)
if not token:
logger.info('Could not retrieve OAUTH token for '
'USM API. Skipping sensor events...')
else:
get_usm_events(config, token, data['sensors'])
push_slack_text(config, data)
except Exception as exc:
logger.info('Exception occured in code.')
alert_on_slack(config, '> Unexpected exception occured.\n'
'```%s```' % (str(exc)))
logger.info(str(exc))
return _exit(500, str(exc))
return _exit(200, 'Everything executed smoothly.')
if __name__ == "__main__":
main({}, {})